4 # Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Google Inc.
6 # This program is free software; you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation; either version 2 of the License, or
9 # (at your option) any later version.
11 # This program is distributed in the hope that it will be useful, but
12 # WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 # General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with this program; if not, write to the Free Software
18 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
22 """Module implementing the master-side code."""
24 # pylint: disable-msg=W0201,C0302
26 # W0201 since most LU attributes are defined in CheckPrereq or similar
29 # C0302: since we have waaaay to many lines in this module
44 from ganeti import ssh
45 from ganeti import utils
46 from ganeti import errors
47 from ganeti import hypervisor
48 from ganeti import locking
49 from ganeti import constants
50 from ganeti import objects
51 from ganeti import serializer
52 from ganeti import ssconf
53 from ganeti import uidpool
54 from ganeti import compat
55 from ganeti import masterd
56 from ganeti import netutils
57 from ganeti import query
58 from ganeti import qlang
59 from ganeti import opcodes
61 import ganeti.masterd.instance # pylint: disable-msg=W0611
64 def _SupportsOob(cfg, node):
65 """Tells if node supports OOB.
67 @type cfg: L{config.ConfigWriter}
68 @param cfg: The cluster configuration
69 @type node: L{objects.Node}
71 @return: The OOB script if supported or an empty string otherwise
74 return cfg.GetNdParams(node)[constants.ND_OOB_PROGRAM]
78 class LogicalUnit(object):
79 """Logical Unit base class.
81 Subclasses must follow these rules:
82 - implement ExpandNames
83 - implement CheckPrereq (except when tasklets are used)
84 - implement Exec (except when tasklets are used)
85 - implement BuildHooksEnv
86 - redefine HPATH and HTYPE
87 - optionally redefine their run requirements:
88 REQ_BGL: the LU needs to hold the Big Ganeti Lock exclusively
90 Note that all commands require root permissions.
92 @ivar dry_run_result: the value (if any) that will be returned to the caller
93 in dry-run mode (signalled by opcode dry_run parameter)
100 def __init__(self, processor, op, context, rpc):
101 """Constructor for LogicalUnit.
103 This needs to be overridden in derived classes in order to check op
107 self.proc = processor
109 self.cfg = context.cfg
110 self.context = context
112 # Dicts used to declare locking needs to mcpu
113 self.needed_locks = None
114 self.acquired_locks = {}
115 self.share_locks = dict.fromkeys(locking.LEVELS, 0)
117 self.remove_locks = {}
118 # Used to force good behavior when calling helper functions
119 self.recalculate_locks = {}
122 self.Log = processor.Log # pylint: disable-msg=C0103
123 self.LogWarning = processor.LogWarning # pylint: disable-msg=C0103
124 self.LogInfo = processor.LogInfo # pylint: disable-msg=C0103
125 self.LogStep = processor.LogStep # pylint: disable-msg=C0103
126 # support for dry-run
127 self.dry_run_result = None
128 # support for generic debug attribute
129 if (not hasattr(self.op, "debug_level") or
130 not isinstance(self.op.debug_level, int)):
131 self.op.debug_level = 0
136 # Validate opcode parameters and set defaults
137 self.op.Validate(True)
139 self.CheckArguments()
142 """Returns the SshRunner object
146 self.__ssh = ssh.SshRunner(self.cfg.GetClusterName())
149 ssh = property(fget=__GetSSH)
151 def CheckArguments(self):
152 """Check syntactic validity for the opcode arguments.
154 This method is for doing a simple syntactic check and ensure
155 validity of opcode parameters, without any cluster-related
156 checks. While the same can be accomplished in ExpandNames and/or
157 CheckPrereq, doing these separate is better because:
159 - ExpandNames is left as as purely a lock-related function
160 - CheckPrereq is run after we have acquired locks (and possible
163 The function is allowed to change the self.op attribute so that
164 later methods can no longer worry about missing parameters.
169 def ExpandNames(self):
170 """Expand names for this LU.
172 This method is called before starting to execute the opcode, and it should
173 update all the parameters of the opcode to their canonical form (e.g. a
174 short node name must be fully expanded after this method has successfully
175 completed). This way locking, hooks, logging, etc. can work correctly.
177 LUs which implement this method must also populate the self.needed_locks
178 member, as a dict with lock levels as keys, and a list of needed lock names
181 - use an empty dict if you don't need any lock
182 - if you don't need any lock at a particular level omit that level
183 - don't put anything for the BGL level
184 - if you want all locks at a level use locking.ALL_SET as a value
186 If you need to share locks (rather than acquire them exclusively) at one
187 level you can modify self.share_locks, setting a true value (usually 1) for
188 that level. By default locks are not shared.
190 This function can also define a list of tasklets, which then will be
191 executed in order instead of the usual LU-level CheckPrereq and Exec
192 functions, if those are not defined by the LU.
196 # Acquire all nodes and one instance
197 self.needed_locks = {
198 locking.LEVEL_NODE: locking.ALL_SET,
199 locking.LEVEL_INSTANCE: ['instance1.example.com'],
201 # Acquire just two nodes
202 self.needed_locks = {
203 locking.LEVEL_NODE: ['node1.example.com', 'node2.example.com'],
206 self.needed_locks = {} # No, you can't leave it to the default value None
209 # The implementation of this method is mandatory only if the new LU is
210 # concurrent, so that old LUs don't need to be changed all at the same
213 self.needed_locks = {} # Exclusive LUs don't need locks.
215 raise NotImplementedError
217 def DeclareLocks(self, level):
218 """Declare LU locking needs for a level
220 While most LUs can just declare their locking needs at ExpandNames time,
221 sometimes there's the need to calculate some locks after having acquired
222 the ones before. This function is called just before acquiring locks at a
223 particular level, but after acquiring the ones at lower levels, and permits
224 such calculations. It can be used to modify self.needed_locks, and by
225 default it does nothing.
227 This function is only called if you have something already set in
228 self.needed_locks for the level.
230 @param level: Locking level which is going to be locked
231 @type level: member of ganeti.locking.LEVELS
235 def CheckPrereq(self):
236 """Check prerequisites for this LU.
238 This method should check that the prerequisites for the execution
239 of this LU are fulfilled. It can do internode communication, but
240 it should be idempotent - no cluster or system changes are
243 The method should raise errors.OpPrereqError in case something is
244 not fulfilled. Its return value is ignored.
246 This method should also update all the parameters of the opcode to
247 their canonical form if it hasn't been done by ExpandNames before.
250 if self.tasklets is not None:
251 for (idx, tl) in enumerate(self.tasklets):
252 logging.debug("Checking prerequisites for tasklet %s/%s",
253 idx + 1, len(self.tasklets))
258 def Exec(self, feedback_fn):
261 This method should implement the actual work. It should raise
262 errors.OpExecError for failures that are somewhat dealt with in
266 if self.tasklets is not None:
267 for (idx, tl) in enumerate(self.tasklets):
268 logging.debug("Executing tasklet %s/%s", idx + 1, len(self.tasklets))
271 raise NotImplementedError
273 def BuildHooksEnv(self):
274 """Build hooks environment for this LU.
276 This method should return a three-node tuple consisting of: a dict
277 containing the environment that will be used for running the
278 specific hook for this LU, a list of node names on which the hook
279 should run before the execution, and a list of node names on which
280 the hook should run after the execution.
282 The keys of the dict must not have 'GANETI_' prefixed as this will
283 be handled in the hooks runner. Also note additional keys will be
284 added by the hooks runner. If the LU doesn't define any
285 environment, an empty dict (and not None) should be returned.
287 No nodes should be returned as an empty list (and not None).
289 Note that if the HPATH for a LU class is None, this function will
293 raise NotImplementedError
295 def HooksCallBack(self, phase, hook_results, feedback_fn, lu_result):
296 """Notify the LU about the results of its hooks.
298 This method is called every time a hooks phase is executed, and notifies
299 the Logical Unit about the hooks' result. The LU can then use it to alter
300 its result based on the hooks. By default the method does nothing and the
301 previous result is passed back unchanged but any LU can define it if it
302 wants to use the local cluster hook-scripts somehow.
304 @param phase: one of L{constants.HOOKS_PHASE_POST} or
305 L{constants.HOOKS_PHASE_PRE}; it denotes the hooks phase
306 @param hook_results: the results of the multi-node hooks rpc call
307 @param feedback_fn: function used send feedback back to the caller
308 @param lu_result: the previous Exec result this LU had, or None
310 @return: the new Exec result, based on the previous result
314 # API must be kept, thus we ignore the unused argument and could
315 # be a function warnings
316 # pylint: disable-msg=W0613,R0201
319 def _ExpandAndLockInstance(self):
320 """Helper function to expand and lock an instance.
322 Many LUs that work on an instance take its name in self.op.instance_name
323 and need to expand it and then declare the expanded name for locking. This
324 function does it, and then updates self.op.instance_name to the expanded
325 name. It also initializes needed_locks as a dict, if this hasn't been done
329 if self.needed_locks is None:
330 self.needed_locks = {}
332 assert locking.LEVEL_INSTANCE not in self.needed_locks, \
333 "_ExpandAndLockInstance called with instance-level locks set"
334 self.op.instance_name = _ExpandInstanceName(self.cfg,
335 self.op.instance_name)
336 self.needed_locks[locking.LEVEL_INSTANCE] = self.op.instance_name
338 def _LockInstancesNodes(self, primary_only=False):
339 """Helper function to declare instances' nodes for locking.
341 This function should be called after locking one or more instances to lock
342 their nodes. Its effect is populating self.needed_locks[locking.LEVEL_NODE]
343 with all primary or secondary nodes for instances already locked and
344 present in self.needed_locks[locking.LEVEL_INSTANCE].
346 It should be called from DeclareLocks, and for safety only works if
347 self.recalculate_locks[locking.LEVEL_NODE] is set.
349 In the future it may grow parameters to just lock some instance's nodes, or
350 to just lock primaries or secondary nodes, if needed.
352 If should be called in DeclareLocks in a way similar to::
354 if level == locking.LEVEL_NODE:
355 self._LockInstancesNodes()
357 @type primary_only: boolean
358 @param primary_only: only lock primary nodes of locked instances
361 assert locking.LEVEL_NODE in self.recalculate_locks, \
362 "_LockInstancesNodes helper function called with no nodes to recalculate"
364 # TODO: check if we're really been called with the instance locks held
366 # For now we'll replace self.needed_locks[locking.LEVEL_NODE], but in the
367 # future we might want to have different behaviors depending on the value
368 # of self.recalculate_locks[locking.LEVEL_NODE]
370 for instance_name in self.acquired_locks[locking.LEVEL_INSTANCE]:
371 instance = self.context.cfg.GetInstanceInfo(instance_name)
372 wanted_nodes.append(instance.primary_node)
374 wanted_nodes.extend(instance.secondary_nodes)
376 if self.recalculate_locks[locking.LEVEL_NODE] == constants.LOCKS_REPLACE:
377 self.needed_locks[locking.LEVEL_NODE] = wanted_nodes
378 elif self.recalculate_locks[locking.LEVEL_NODE] == constants.LOCKS_APPEND:
379 self.needed_locks[locking.LEVEL_NODE].extend(wanted_nodes)
381 del self.recalculate_locks[locking.LEVEL_NODE]
384 class NoHooksLU(LogicalUnit): # pylint: disable-msg=W0223
385 """Simple LU which runs no hooks.
387 This LU is intended as a parent for other LogicalUnits which will
388 run no hooks, in order to reduce duplicate code.
394 def BuildHooksEnv(self):
395 """Empty BuildHooksEnv for NoHooksLu.
397 This just raises an error.
400 assert False, "BuildHooksEnv called for NoHooksLUs"
404 """Tasklet base class.
406 Tasklets are subcomponents for LUs. LUs can consist entirely of tasklets or
407 they can mix legacy code with tasklets. Locking needs to be done in the LU,
408 tasklets know nothing about locks.
410 Subclasses must follow these rules:
411 - Implement CheckPrereq
415 def __init__(self, lu):
422 def CheckPrereq(self):
423 """Check prerequisites for this tasklets.
425 This method should check whether the prerequisites for the execution of
426 this tasklet are fulfilled. It can do internode communication, but it
427 should be idempotent - no cluster or system changes are allowed.
429 The method should raise errors.OpPrereqError in case something is not
430 fulfilled. Its return value is ignored.
432 This method should also update all parameters to their canonical form if it
433 hasn't been done before.
438 def Exec(self, feedback_fn):
439 """Execute the tasklet.
441 This method should implement the actual work. It should raise
442 errors.OpExecError for failures that are somewhat dealt with in code, or
446 raise NotImplementedError
450 """Base for query utility classes.
453 #: Attribute holding field definitions
456 def __init__(self, names, fields, use_locking):
457 """Initializes this class.
461 self.use_locking = use_locking
463 self.query = query.Query(self.FIELDS, fields)
464 self.requested_data = self.query.RequestedData()
466 self.do_locking = None
469 def _GetNames(self, lu, all_names, lock_level):
470 """Helper function to determine names asked for in the query.
474 names = lu.acquired_locks[lock_level]
478 if self.wanted == locking.ALL_SET:
479 assert not self.names
480 # caller didn't specify names, so ordering is not important
481 return utils.NiceSort(names)
483 # caller specified names and we must keep the same order
485 assert not self.do_locking or lu.acquired_locks[lock_level]
487 missing = set(self.wanted).difference(names)
489 raise errors.OpExecError("Some items were removed before retrieving"
490 " their data: %s" % missing)
492 # Return expanded names
496 def FieldsQuery(cls, fields):
497 """Returns list of available fields.
499 @return: List of L{objects.QueryFieldDefinition}
502 return query.QueryFields(cls.FIELDS, fields)
504 def ExpandNames(self, lu):
505 """Expand names for this query.
507 See L{LogicalUnit.ExpandNames}.
510 raise NotImplementedError()
512 def DeclareLocks(self, lu, level):
513 """Declare locks for this query.
515 See L{LogicalUnit.DeclareLocks}.
518 raise NotImplementedError()
520 def _GetQueryData(self, lu):
521 """Collects all data for this query.
523 @return: Query data object
526 raise NotImplementedError()
528 def NewStyleQuery(self, lu):
529 """Collect data and execute query.
532 return query.GetQueryResponse(self.query, self._GetQueryData(lu))
534 def OldStyleQuery(self, lu):
535 """Collect data and execute query.
538 return self.query.OldStyleQuery(self._GetQueryData(lu))
541 def _GetWantedNodes(lu, nodes):
542 """Returns list of checked and expanded node names.
544 @type lu: L{LogicalUnit}
545 @param lu: the logical unit on whose behalf we execute
547 @param nodes: list of node names or None for all nodes
549 @return: the list of nodes, sorted
550 @raise errors.ProgrammerError: if the nodes parameter is wrong type
554 return [_ExpandNodeName(lu.cfg, name) for name in nodes]
556 return utils.NiceSort(lu.cfg.GetNodeList())
559 def _GetWantedInstances(lu, instances):
560 """Returns list of checked and expanded instance names.
562 @type lu: L{LogicalUnit}
563 @param lu: the logical unit on whose behalf we execute
564 @type instances: list
565 @param instances: list of instance names or None for all instances
567 @return: the list of instances, sorted
568 @raise errors.OpPrereqError: if the instances parameter is wrong type
569 @raise errors.OpPrereqError: if any of the passed instances is not found
573 wanted = [_ExpandInstanceName(lu.cfg, name) for name in instances]
575 wanted = utils.NiceSort(lu.cfg.GetInstanceList())
579 def _GetUpdatedParams(old_params, update_dict,
580 use_default=True, use_none=False):
581 """Return the new version of a parameter dictionary.
583 @type old_params: dict
584 @param old_params: old parameters
585 @type update_dict: dict
586 @param update_dict: dict containing new parameter values, or
587 constants.VALUE_DEFAULT to reset the parameter to its default
589 @param use_default: boolean
590 @type use_default: whether to recognise L{constants.VALUE_DEFAULT}
591 values as 'to be deleted' values
592 @param use_none: boolean
593 @type use_none: whether to recognise C{None} values as 'to be
596 @return: the new parameter dictionary
599 params_copy = copy.deepcopy(old_params)
600 for key, val in update_dict.iteritems():
601 if ((use_default and val == constants.VALUE_DEFAULT) or
602 (use_none and val is None)):
608 params_copy[key] = val
612 def _CheckOutputFields(static, dynamic, selected):
613 """Checks whether all selected fields are valid.
615 @type static: L{utils.FieldSet}
616 @param static: static fields set
617 @type dynamic: L{utils.FieldSet}
618 @param dynamic: dynamic fields set
625 delta = f.NonMatching(selected)
627 raise errors.OpPrereqError("Unknown output fields selected: %s"
628 % ",".join(delta), errors.ECODE_INVAL)
631 def _CheckGlobalHvParams(params):
632 """Validates that given hypervisor params are not global ones.
634 This will ensure that instances don't get customised versions of
638 used_globals = constants.HVC_GLOBALS.intersection(params)
640 msg = ("The following hypervisor parameters are global and cannot"
641 " be customized at instance level, please modify them at"
642 " cluster level: %s" % utils.CommaJoin(used_globals))
643 raise errors.OpPrereqError(msg, errors.ECODE_INVAL)
646 def _CheckNodeOnline(lu, node, msg=None):
647 """Ensure that a given node is online.
649 @param lu: the LU on behalf of which we make the check
650 @param node: the node to check
651 @param msg: if passed, should be a message to replace the default one
652 @raise errors.OpPrereqError: if the node is offline
656 msg = "Can't use offline node"
657 if lu.cfg.GetNodeInfo(node).offline:
658 raise errors.OpPrereqError("%s: %s" % (msg, node), errors.ECODE_STATE)
661 def _CheckNodeNotDrained(lu, node):
662 """Ensure that a given node is not drained.
664 @param lu: the LU on behalf of which we make the check
665 @param node: the node to check
666 @raise errors.OpPrereqError: if the node is drained
669 if lu.cfg.GetNodeInfo(node).drained:
670 raise errors.OpPrereqError("Can't use drained node %s" % node,
674 def _CheckNodeVmCapable(lu, node):
675 """Ensure that a given node is vm capable.
677 @param lu: the LU on behalf of which we make the check
678 @param node: the node to check
679 @raise errors.OpPrereqError: if the node is not vm capable
682 if not lu.cfg.GetNodeInfo(node).vm_capable:
683 raise errors.OpPrereqError("Can't use non-vm_capable node %s" % node,
687 def _CheckNodeHasOS(lu, node, os_name, force_variant):
688 """Ensure that a node supports a given OS.
690 @param lu: the LU on behalf of which we make the check
691 @param node: the node to check
692 @param os_name: the OS to query about
693 @param force_variant: whether to ignore variant errors
694 @raise errors.OpPrereqError: if the node is not supporting the OS
697 result = lu.rpc.call_os_get(node, os_name)
698 result.Raise("OS '%s' not in supported OS list for node %s" %
700 prereq=True, ecode=errors.ECODE_INVAL)
701 if not force_variant:
702 _CheckOSVariant(result.payload, os_name)
705 def _CheckNodeHasSecondaryIP(lu, node, secondary_ip, prereq):
706 """Ensure that a node has the given secondary ip.
708 @type lu: L{LogicalUnit}
709 @param lu: the LU on behalf of which we make the check
711 @param node: the node to check
712 @type secondary_ip: string
713 @param secondary_ip: the ip to check
714 @type prereq: boolean
715 @param prereq: whether to throw a prerequisite or an execute error
716 @raise errors.OpPrereqError: if the node doesn't have the ip, and prereq=True
717 @raise errors.OpExecError: if the node doesn't have the ip, and prereq=False
720 result = lu.rpc.call_node_has_ip_address(node, secondary_ip)
721 result.Raise("Failure checking secondary ip on node %s" % node,
722 prereq=prereq, ecode=errors.ECODE_ENVIRON)
723 if not result.payload:
724 msg = ("Node claims it doesn't have the secondary ip you gave (%s),"
725 " please fix and re-run this command" % secondary_ip)
727 raise errors.OpPrereqError(msg, errors.ECODE_ENVIRON)
729 raise errors.OpExecError(msg)
732 def _GetClusterDomainSecret():
733 """Reads the cluster domain secret.
736 return utils.ReadOneLineFile(constants.CLUSTER_DOMAIN_SECRET_FILE,
740 def _CheckInstanceDown(lu, instance, reason):
741 """Ensure that an instance is not running."""
742 if instance.admin_up:
743 raise errors.OpPrereqError("Instance %s is marked to be up, %s" %
744 (instance.name, reason), errors.ECODE_STATE)
746 pnode = instance.primary_node
747 ins_l = lu.rpc.call_instance_list([pnode], [instance.hypervisor])[pnode]
748 ins_l.Raise("Can't contact node %s for instance information" % pnode,
749 prereq=True, ecode=errors.ECODE_ENVIRON)
751 if instance.name in ins_l.payload:
752 raise errors.OpPrereqError("Instance %s is running, %s" %
753 (instance.name, reason), errors.ECODE_STATE)
756 def _ExpandItemName(fn, name, kind):
757 """Expand an item name.
759 @param fn: the function to use for expansion
760 @param name: requested item name
761 @param kind: text description ('Node' or 'Instance')
762 @return: the resolved (full) name
763 @raise errors.OpPrereqError: if the item is not found
767 if full_name is None:
768 raise errors.OpPrereqError("%s '%s' not known" % (kind, name),
773 def _ExpandNodeName(cfg, name):
774 """Wrapper over L{_ExpandItemName} for nodes."""
775 return _ExpandItemName(cfg.ExpandNodeName, name, "Node")
778 def _ExpandInstanceName(cfg, name):
779 """Wrapper over L{_ExpandItemName} for instance."""
780 return _ExpandItemName(cfg.ExpandInstanceName, name, "Instance")
783 def _BuildInstanceHookEnv(name, primary_node, secondary_nodes, os_type, status,
784 memory, vcpus, nics, disk_template, disks,
785 bep, hvp, hypervisor_name):
786 """Builds instance related env variables for hooks
788 This builds the hook environment from individual variables.
791 @param name: the name of the instance
792 @type primary_node: string
793 @param primary_node: the name of the instance's primary node
794 @type secondary_nodes: list
795 @param secondary_nodes: list of secondary nodes as strings
796 @type os_type: string
797 @param os_type: the name of the instance's OS
798 @type status: boolean
799 @param status: the should_run status of the instance
801 @param memory: the memory size of the instance
803 @param vcpus: the count of VCPUs the instance has
805 @param nics: list of tuples (ip, mac, mode, link) representing
806 the NICs the instance has
807 @type disk_template: string
808 @param disk_template: the disk template of the instance
810 @param disks: the list of (size, mode) pairs
812 @param bep: the backend parameters for the instance
814 @param hvp: the hypervisor parameters for the instance
815 @type hypervisor_name: string
816 @param hypervisor_name: the hypervisor for the instance
818 @return: the hook environment for this instance
827 "INSTANCE_NAME": name,
828 "INSTANCE_PRIMARY": primary_node,
829 "INSTANCE_SECONDARIES": " ".join(secondary_nodes),
830 "INSTANCE_OS_TYPE": os_type,
831 "INSTANCE_STATUS": str_status,
832 "INSTANCE_MEMORY": memory,
833 "INSTANCE_VCPUS": vcpus,
834 "INSTANCE_DISK_TEMPLATE": disk_template,
835 "INSTANCE_HYPERVISOR": hypervisor_name,
839 nic_count = len(nics)
840 for idx, (ip, mac, mode, link) in enumerate(nics):
843 env["INSTANCE_NIC%d_IP" % idx] = ip
844 env["INSTANCE_NIC%d_MAC" % idx] = mac
845 env["INSTANCE_NIC%d_MODE" % idx] = mode
846 env["INSTANCE_NIC%d_LINK" % idx] = link
847 if mode == constants.NIC_MODE_BRIDGED:
848 env["INSTANCE_NIC%d_BRIDGE" % idx] = link
852 env["INSTANCE_NIC_COUNT"] = nic_count
855 disk_count = len(disks)
856 for idx, (size, mode) in enumerate(disks):
857 env["INSTANCE_DISK%d_SIZE" % idx] = size
858 env["INSTANCE_DISK%d_MODE" % idx] = mode
862 env["INSTANCE_DISK_COUNT"] = disk_count
864 for source, kind in [(bep, "BE"), (hvp, "HV")]:
865 for key, value in source.items():
866 env["INSTANCE_%s_%s" % (kind, key)] = value
871 def _NICListToTuple(lu, nics):
872 """Build a list of nic information tuples.
874 This list is suitable to be passed to _BuildInstanceHookEnv or as a return
875 value in LUInstanceQueryData.
877 @type lu: L{LogicalUnit}
878 @param lu: the logical unit on whose behalf we execute
879 @type nics: list of L{objects.NIC}
880 @param nics: list of nics to convert to hooks tuples
884 cluster = lu.cfg.GetClusterInfo()
888 filled_params = cluster.SimpleFillNIC(nic.nicparams)
889 mode = filled_params[constants.NIC_MODE]
890 link = filled_params[constants.NIC_LINK]
891 hooks_nics.append((ip, mac, mode, link))
895 def _BuildInstanceHookEnvByObject(lu, instance, override=None):
896 """Builds instance related env variables for hooks from an object.
898 @type lu: L{LogicalUnit}
899 @param lu: the logical unit on whose behalf we execute
900 @type instance: L{objects.Instance}
901 @param instance: the instance for which we should build the
904 @param override: dictionary with key/values that will override
907 @return: the hook environment dictionary
910 cluster = lu.cfg.GetClusterInfo()
911 bep = cluster.FillBE(instance)
912 hvp = cluster.FillHV(instance)
914 'name': instance.name,
915 'primary_node': instance.primary_node,
916 'secondary_nodes': instance.secondary_nodes,
917 'os_type': instance.os,
918 'status': instance.admin_up,
919 'memory': bep[constants.BE_MEMORY],
920 'vcpus': bep[constants.BE_VCPUS],
921 'nics': _NICListToTuple(lu, instance.nics),
922 'disk_template': instance.disk_template,
923 'disks': [(disk.size, disk.mode) for disk in instance.disks],
926 'hypervisor_name': instance.hypervisor,
929 args.update(override)
930 return _BuildInstanceHookEnv(**args) # pylint: disable-msg=W0142
933 def _AdjustCandidatePool(lu, exceptions):
934 """Adjust the candidate pool after node operations.
937 mod_list = lu.cfg.MaintainCandidatePool(exceptions)
939 lu.LogInfo("Promoted nodes to master candidate role: %s",
940 utils.CommaJoin(node.name for node in mod_list))
941 for name in mod_list:
942 lu.context.ReaddNode(name)
943 mc_now, mc_max, _ = lu.cfg.GetMasterCandidateStats(exceptions)
945 lu.LogInfo("Note: more nodes are candidates (%d) than desired (%d)" %
949 def _DecideSelfPromotion(lu, exceptions=None):
950 """Decide whether I should promote myself as a master candidate.
953 cp_size = lu.cfg.GetClusterInfo().candidate_pool_size
954 mc_now, mc_should, _ = lu.cfg.GetMasterCandidateStats(exceptions)
955 # the new node will increase mc_max with one, so:
956 mc_should = min(mc_should + 1, cp_size)
957 return mc_now < mc_should
960 def _CheckNicsBridgesExist(lu, target_nics, target_node):
961 """Check that the brigdes needed by a list of nics exist.
964 cluster = lu.cfg.GetClusterInfo()
965 paramslist = [cluster.SimpleFillNIC(nic.nicparams) for nic in target_nics]
966 brlist = [params[constants.NIC_LINK] for params in paramslist
967 if params[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED]
969 result = lu.rpc.call_bridges_exist(target_node, brlist)
970 result.Raise("Error checking bridges on destination node '%s'" %
971 target_node, prereq=True, ecode=errors.ECODE_ENVIRON)
974 def _CheckInstanceBridgesExist(lu, instance, node=None):
975 """Check that the brigdes needed by an instance exist.
979 node = instance.primary_node
980 _CheckNicsBridgesExist(lu, instance.nics, node)
983 def _CheckOSVariant(os_obj, name):
984 """Check whether an OS name conforms to the os variants specification.
986 @type os_obj: L{objects.OS}
987 @param os_obj: OS object to check
989 @param name: OS name passed by the user, to check for validity
992 if not os_obj.supported_variants:
994 variant = objects.OS.GetVariant(name)
996 raise errors.OpPrereqError("OS name must include a variant",
999 if variant not in os_obj.supported_variants:
1000 raise errors.OpPrereqError("Unsupported OS variant", errors.ECODE_INVAL)
1003 def _GetNodeInstancesInner(cfg, fn):
1004 return [i for i in cfg.GetAllInstancesInfo().values() if fn(i)]
1007 def _GetNodeInstances(cfg, node_name):
1008 """Returns a list of all primary and secondary instances on a node.
1012 return _GetNodeInstancesInner(cfg, lambda inst: node_name in inst.all_nodes)
1015 def _GetNodePrimaryInstances(cfg, node_name):
1016 """Returns primary instances on a node.
1019 return _GetNodeInstancesInner(cfg,
1020 lambda inst: node_name == inst.primary_node)
1023 def _GetNodeSecondaryInstances(cfg, node_name):
1024 """Returns secondary instances on a node.
1027 return _GetNodeInstancesInner(cfg,
1028 lambda inst: node_name in inst.secondary_nodes)
1031 def _GetStorageTypeArgs(cfg, storage_type):
1032 """Returns the arguments for a storage type.
1035 # Special case for file storage
1036 if storage_type == constants.ST_FILE:
1037 # storage.FileStorage wants a list of storage directories
1038 return [[cfg.GetFileStorageDir()]]
1043 def _FindFaultyInstanceDisks(cfg, rpc, instance, node_name, prereq):
1046 for dev in instance.disks:
1047 cfg.SetDiskID(dev, node_name)
1049 result = rpc.call_blockdev_getmirrorstatus(node_name, instance.disks)
1050 result.Raise("Failed to get disk status from node %s" % node_name,
1051 prereq=prereq, ecode=errors.ECODE_ENVIRON)
1053 for idx, bdev_status in enumerate(result.payload):
1054 if bdev_status and bdev_status.ldisk_status == constants.LDS_FAULTY:
1060 def _CheckIAllocatorOrNode(lu, iallocator_slot, node_slot):
1061 """Check the sanity of iallocator and node arguments and use the
1062 cluster-wide iallocator if appropriate.
1064 Check that at most one of (iallocator, node) is specified. If none is
1065 specified, then the LU's opcode's iallocator slot is filled with the
1066 cluster-wide default iallocator.
1068 @type iallocator_slot: string
1069 @param iallocator_slot: the name of the opcode iallocator slot
1070 @type node_slot: string
1071 @param node_slot: the name of the opcode target node slot
1074 node = getattr(lu.op, node_slot, None)
1075 iallocator = getattr(lu.op, iallocator_slot, None)
1077 if node is not None and iallocator is not None:
1078 raise errors.OpPrereqError("Do not specify both, iallocator and node.",
1080 elif node is None and iallocator is None:
1081 default_iallocator = lu.cfg.GetDefaultIAllocator()
1082 if default_iallocator:
1083 setattr(lu.op, iallocator_slot, default_iallocator)
1085 raise errors.OpPrereqError("No iallocator or node given and no"
1086 " cluster-wide default iallocator found."
1087 " Please specify either an iallocator or a"
1088 " node, or set a cluster-wide default"
1092 class LUClusterPostInit(LogicalUnit):
1093 """Logical unit for running hooks after cluster initialization.
1096 HPATH = "cluster-init"
1097 HTYPE = constants.HTYPE_CLUSTER
1099 def BuildHooksEnv(self):
1103 env = {"OP_TARGET": self.cfg.GetClusterName()}
1104 mn = self.cfg.GetMasterNode()
1105 return env, [], [mn]
1107 def Exec(self, feedback_fn):
1114 class LUClusterDestroy(LogicalUnit):
1115 """Logical unit for destroying the cluster.
1118 HPATH = "cluster-destroy"
1119 HTYPE = constants.HTYPE_CLUSTER
1121 def BuildHooksEnv(self):
1125 env = {"OP_TARGET": self.cfg.GetClusterName()}
1128 def CheckPrereq(self):
1129 """Check prerequisites.
1131 This checks whether the cluster is empty.
1133 Any errors are signaled by raising errors.OpPrereqError.
1136 master = self.cfg.GetMasterNode()
1138 nodelist = self.cfg.GetNodeList()
1139 if len(nodelist) != 1 or nodelist[0] != master:
1140 raise errors.OpPrereqError("There are still %d node(s) in"
1141 " this cluster." % (len(nodelist) - 1),
1143 instancelist = self.cfg.GetInstanceList()
1145 raise errors.OpPrereqError("There are still %d instance(s) in"
1146 " this cluster." % len(instancelist),
1149 def Exec(self, feedback_fn):
1150 """Destroys the cluster.
1153 master = self.cfg.GetMasterNode()
1155 # Run post hooks on master node before it's removed
1156 hm = self.proc.hmclass(self.rpc.call_hooks_runner, self)
1158 hm.RunPhase(constants.HOOKS_PHASE_POST, [master])
1160 # pylint: disable-msg=W0702
1161 self.LogWarning("Errors occurred running hooks on %s" % master)
1163 result = self.rpc.call_node_stop_master(master, False)
1164 result.Raise("Could not disable the master role")
1169 def _VerifyCertificate(filename):
1170 """Verifies a certificate for LUClusterVerify.
1172 @type filename: string
1173 @param filename: Path to PEM file
1177 cert = OpenSSL.crypto.load_certificate(OpenSSL.crypto.FILETYPE_PEM,
1178 utils.ReadFile(filename))
1179 except Exception, err: # pylint: disable-msg=W0703
1180 return (LUClusterVerify.ETYPE_ERROR,
1181 "Failed to load X509 certificate %s: %s" % (filename, err))
1184 utils.VerifyX509Certificate(cert, constants.SSL_CERT_EXPIRATION_WARN,
1185 constants.SSL_CERT_EXPIRATION_ERROR)
1188 fnamemsg = "While verifying %s: %s" % (filename, msg)
1193 return (None, fnamemsg)
1194 elif errcode == utils.CERT_WARNING:
1195 return (LUClusterVerify.ETYPE_WARNING, fnamemsg)
1196 elif errcode == utils.CERT_ERROR:
1197 return (LUClusterVerify.ETYPE_ERROR, fnamemsg)
1199 raise errors.ProgrammerError("Unhandled certificate error code %r" % errcode)
1202 class LUClusterVerify(LogicalUnit):
1203 """Verifies the cluster status.
1206 HPATH = "cluster-verify"
1207 HTYPE = constants.HTYPE_CLUSTER
1210 TCLUSTER = "cluster"
1212 TINSTANCE = "instance"
1214 ECLUSTERCFG = (TCLUSTER, "ECLUSTERCFG")
1215 ECLUSTERCERT = (TCLUSTER, "ECLUSTERCERT")
1216 EINSTANCEBADNODE = (TINSTANCE, "EINSTANCEBADNODE")
1217 EINSTANCEDOWN = (TINSTANCE, "EINSTANCEDOWN")
1218 EINSTANCELAYOUT = (TINSTANCE, "EINSTANCELAYOUT")
1219 EINSTANCEMISSINGDISK = (TINSTANCE, "EINSTANCEMISSINGDISK")
1220 EINSTANCEFAULTYDISK = (TINSTANCE, "EINSTANCEFAULTYDISK")
1221 EINSTANCEWRONGNODE = (TINSTANCE, "EINSTANCEWRONGNODE")
1222 EINSTANCESPLITGROUPS = (TINSTANCE, "EINSTANCESPLITGROUPS")
1223 ENODEDRBD = (TNODE, "ENODEDRBD")
1224 ENODEDRBDHELPER = (TNODE, "ENODEDRBDHELPER")
1225 ENODEFILECHECK = (TNODE, "ENODEFILECHECK")
1226 ENODEHOOKS = (TNODE, "ENODEHOOKS")
1227 ENODEHV = (TNODE, "ENODEHV")
1228 ENODELVM = (TNODE, "ENODELVM")
1229 ENODEN1 = (TNODE, "ENODEN1")
1230 ENODENET = (TNODE, "ENODENET")
1231 ENODEOS = (TNODE, "ENODEOS")
1232 ENODEORPHANINSTANCE = (TNODE, "ENODEORPHANINSTANCE")
1233 ENODEORPHANLV = (TNODE, "ENODEORPHANLV")
1234 ENODERPC = (TNODE, "ENODERPC")
1235 ENODESSH = (TNODE, "ENODESSH")
1236 ENODEVERSION = (TNODE, "ENODEVERSION")
1237 ENODESETUP = (TNODE, "ENODESETUP")
1238 ENODETIME = (TNODE, "ENODETIME")
1239 ENODEOOBPATH = (TNODE, "ENODEOOBPATH")
1241 ETYPE_FIELD = "code"
1242 ETYPE_ERROR = "ERROR"
1243 ETYPE_WARNING = "WARNING"
1245 _HOOKS_INDENT_RE = re.compile("^", re.M)
1247 class NodeImage(object):
1248 """A class representing the logical and physical status of a node.
1251 @ivar name: the node name to which this object refers
1252 @ivar volumes: a structure as returned from
1253 L{ganeti.backend.GetVolumeList} (runtime)
1254 @ivar instances: a list of running instances (runtime)
1255 @ivar pinst: list of configured primary instances (config)
1256 @ivar sinst: list of configured secondary instances (config)
1257 @ivar sbp: diction of {secondary-node: list of instances} of all peers
1258 of this node (config)
1259 @ivar mfree: free memory, as reported by hypervisor (runtime)
1260 @ivar dfree: free disk, as reported by the node (runtime)
1261 @ivar offline: the offline status (config)
1262 @type rpc_fail: boolean
1263 @ivar rpc_fail: whether the RPC verify call was successfull (overall,
1264 not whether the individual keys were correct) (runtime)
1265 @type lvm_fail: boolean
1266 @ivar lvm_fail: whether the RPC call didn't return valid LVM data
1267 @type hyp_fail: boolean
1268 @ivar hyp_fail: whether the RPC call didn't return the instance list
1269 @type ghost: boolean
1270 @ivar ghost: whether this is a known node or not (config)
1271 @type os_fail: boolean
1272 @ivar os_fail: whether the RPC call didn't return valid OS data
1274 @ivar oslist: list of OSes as diagnosed by DiagnoseOS
1275 @type vm_capable: boolean
1276 @ivar vm_capable: whether the node can host instances
1279 def __init__(self, offline=False, name=None, vm_capable=True):
1288 self.offline = offline
1289 self.vm_capable = vm_capable
1290 self.rpc_fail = False
1291 self.lvm_fail = False
1292 self.hyp_fail = False
1294 self.os_fail = False
1297 def ExpandNames(self):
1298 self.needed_locks = {
1299 locking.LEVEL_NODE: locking.ALL_SET,
1300 locking.LEVEL_INSTANCE: locking.ALL_SET,
1302 self.share_locks = dict.fromkeys(locking.LEVELS, 1)
1304 def _Error(self, ecode, item, msg, *args, **kwargs):
1305 """Format an error message.
1307 Based on the opcode's error_codes parameter, either format a
1308 parseable error code, or a simpler error string.
1310 This must be called only from Exec and functions called from Exec.
1313 ltype = kwargs.get(self.ETYPE_FIELD, self.ETYPE_ERROR)
1315 # first complete the msg
1318 # then format the whole message
1319 if self.op.error_codes:
1320 msg = "%s:%s:%s:%s:%s" % (ltype, etxt, itype, item, msg)
1326 msg = "%s: %s%s: %s" % (ltype, itype, item, msg)
1327 # and finally report it via the feedback_fn
1328 self._feedback_fn(" - %s" % msg)
1330 def _ErrorIf(self, cond, *args, **kwargs):
1331 """Log an error message if the passed condition is True.
1334 cond = bool(cond) or self.op.debug_simulate_errors
1336 self._Error(*args, **kwargs)
1337 # do not mark the operation as failed for WARN cases only
1338 if kwargs.get(self.ETYPE_FIELD, self.ETYPE_ERROR) == self.ETYPE_ERROR:
1339 self.bad = self.bad or cond
1341 def _VerifyNode(self, ninfo, nresult):
1342 """Perform some basic validation on data returned from a node.
1344 - check the result data structure is well formed and has all the
1346 - check ganeti version
1348 @type ninfo: L{objects.Node}
1349 @param ninfo: the node to check
1350 @param nresult: the results from the node
1352 @return: whether overall this call was successful (and we can expect
1353 reasonable values in the respose)
1357 _ErrorIf = self._ErrorIf # pylint: disable-msg=C0103
1359 # main result, nresult should be a non-empty dict
1360 test = not nresult or not isinstance(nresult, dict)
1361 _ErrorIf(test, self.ENODERPC, node,
1362 "unable to verify node: no data returned")
1366 # compares ganeti version
1367 local_version = constants.PROTOCOL_VERSION
1368 remote_version = nresult.get("version", None)
1369 test = not (remote_version and
1370 isinstance(remote_version, (list, tuple)) and
1371 len(remote_version) == 2)
1372 _ErrorIf(test, self.ENODERPC, node,
1373 "connection to node returned invalid data")
1377 test = local_version != remote_version[0]
1378 _ErrorIf(test, self.ENODEVERSION, node,
1379 "incompatible protocol versions: master %s,"
1380 " node %s", local_version, remote_version[0])
1384 # node seems compatible, we can actually try to look into its results
1386 # full package version
1387 self._ErrorIf(constants.RELEASE_VERSION != remote_version[1],
1388 self.ENODEVERSION, node,
1389 "software version mismatch: master %s, node %s",
1390 constants.RELEASE_VERSION, remote_version[1],
1391 code=self.ETYPE_WARNING)
1393 hyp_result = nresult.get(constants.NV_HYPERVISOR, None)
1394 if ninfo.vm_capable and isinstance(hyp_result, dict):
1395 for hv_name, hv_result in hyp_result.iteritems():
1396 test = hv_result is not None
1397 _ErrorIf(test, self.ENODEHV, node,
1398 "hypervisor %s verify failure: '%s'", hv_name, hv_result)
1400 hvp_result = nresult.get(constants.NV_HVPARAMS, None)
1401 if ninfo.vm_capable and isinstance(hvp_result, list):
1402 for item, hv_name, hv_result in hvp_result:
1403 _ErrorIf(True, self.ENODEHV, node,
1404 "hypervisor %s parameter verify failure (source %s): %s",
1405 hv_name, item, hv_result)
1407 test = nresult.get(constants.NV_NODESETUP,
1408 ["Missing NODESETUP results"])
1409 _ErrorIf(test, self.ENODESETUP, node, "node setup error: %s",
1414 def _VerifyNodeTime(self, ninfo, nresult,
1415 nvinfo_starttime, nvinfo_endtime):
1416 """Check the node time.
1418 @type ninfo: L{objects.Node}
1419 @param ninfo: the node to check
1420 @param nresult: the remote results for the node
1421 @param nvinfo_starttime: the start time of the RPC call
1422 @param nvinfo_endtime: the end time of the RPC call
1426 _ErrorIf = self._ErrorIf # pylint: disable-msg=C0103
1428 ntime = nresult.get(constants.NV_TIME, None)
1430 ntime_merged = utils.MergeTime(ntime)
1431 except (ValueError, TypeError):
1432 _ErrorIf(True, self.ENODETIME, node, "Node returned invalid time")
1435 if ntime_merged < (nvinfo_starttime - constants.NODE_MAX_CLOCK_SKEW):
1436 ntime_diff = "%.01fs" % abs(nvinfo_starttime - ntime_merged)
1437 elif ntime_merged > (nvinfo_endtime + constants.NODE_MAX_CLOCK_SKEW):
1438 ntime_diff = "%.01fs" % abs(ntime_merged - nvinfo_endtime)
1442 _ErrorIf(ntime_diff is not None, self.ENODETIME, node,
1443 "Node time diverges by at least %s from master node time",
1446 def _VerifyNodeLVM(self, ninfo, nresult, vg_name):
1447 """Check the node LVM results.
1449 @type ninfo: L{objects.Node}
1450 @param ninfo: the node to check
1451 @param nresult: the remote results for the node
1452 @param vg_name: the configured VG name
1459 _ErrorIf = self._ErrorIf # pylint: disable-msg=C0103
1461 # checks vg existence and size > 20G
1462 vglist = nresult.get(constants.NV_VGLIST, None)
1464 _ErrorIf(test, self.ENODELVM, node, "unable to check volume groups")
1466 vgstatus = utils.CheckVolumeGroupSize(vglist, vg_name,
1467 constants.MIN_VG_SIZE)
1468 _ErrorIf(vgstatus, self.ENODELVM, node, vgstatus)
1471 pvlist = nresult.get(constants.NV_PVLIST, None)
1472 test = pvlist is None
1473 _ErrorIf(test, self.ENODELVM, node, "Can't get PV list from node")
1475 # check that ':' is not present in PV names, since it's a
1476 # special character for lvcreate (denotes the range of PEs to
1478 for _, pvname, owner_vg in pvlist:
1479 test = ":" in pvname
1480 _ErrorIf(test, self.ENODELVM, node, "Invalid character ':' in PV"
1481 " '%s' of VG '%s'", pvname, owner_vg)
1483 def _VerifyNodeBridges(self, ninfo, nresult, bridges):
1484 """Check the node bridges.
1486 @type ninfo: L{objects.Node}
1487 @param ninfo: the node to check
1488 @param nresult: the remote results for the node
1489 @param bridges: the expected list of bridges
1496 _ErrorIf = self._ErrorIf # pylint: disable-msg=C0103
1498 missing = nresult.get(constants.NV_BRIDGES, None)
1499 test = not isinstance(missing, list)
1500 _ErrorIf(test, self.ENODENET, node,
1501 "did not return valid bridge information")
1503 _ErrorIf(bool(missing), self.ENODENET, node, "missing bridges: %s" %
1504 utils.CommaJoin(sorted(missing)))
1506 def _VerifyNodeNetwork(self, ninfo, nresult):
1507 """Check the node network connectivity results.
1509 @type ninfo: L{objects.Node}
1510 @param ninfo: the node to check
1511 @param nresult: the remote results for the node
1515 _ErrorIf = self._ErrorIf # pylint: disable-msg=C0103
1517 test = constants.NV_NODELIST not in nresult
1518 _ErrorIf(test, self.ENODESSH, node,
1519 "node hasn't returned node ssh connectivity data")
1521 if nresult[constants.NV_NODELIST]:
1522 for a_node, a_msg in nresult[constants.NV_NODELIST].items():
1523 _ErrorIf(True, self.ENODESSH, node,
1524 "ssh communication with node '%s': %s", a_node, a_msg)
1526 test = constants.NV_NODENETTEST not in nresult
1527 _ErrorIf(test, self.ENODENET, node,
1528 "node hasn't returned node tcp connectivity data")
1530 if nresult[constants.NV_NODENETTEST]:
1531 nlist = utils.NiceSort(nresult[constants.NV_NODENETTEST].keys())
1533 _ErrorIf(True, self.ENODENET, node,
1534 "tcp communication with node '%s': %s",
1535 anode, nresult[constants.NV_NODENETTEST][anode])
1537 test = constants.NV_MASTERIP not in nresult
1538 _ErrorIf(test, self.ENODENET, node,
1539 "node hasn't returned node master IP reachability data")
1541 if not nresult[constants.NV_MASTERIP]:
1542 if node == self.master_node:
1543 msg = "the master node cannot reach the master IP (not configured?)"
1545 msg = "cannot reach the master IP"
1546 _ErrorIf(True, self.ENODENET, node, msg)
1548 def _VerifyInstance(self, instance, instanceconfig, node_image,
1550 """Verify an instance.
1552 This function checks to see if the required block devices are
1553 available on the instance's node.
1556 _ErrorIf = self._ErrorIf # pylint: disable-msg=C0103
1557 node_current = instanceconfig.primary_node
1559 node_vol_should = {}
1560 instanceconfig.MapLVsByNode(node_vol_should)
1562 for node in node_vol_should:
1563 n_img = node_image[node]
1564 if n_img.offline or n_img.rpc_fail or n_img.lvm_fail:
1565 # ignore missing volumes on offline or broken nodes
1567 for volume in node_vol_should[node]:
1568 test = volume not in n_img.volumes
1569 _ErrorIf(test, self.EINSTANCEMISSINGDISK, instance,
1570 "volume %s missing on node %s", volume, node)
1572 if instanceconfig.admin_up:
1573 pri_img = node_image[node_current]
1574 test = instance not in pri_img.instances and not pri_img.offline
1575 _ErrorIf(test, self.EINSTANCEDOWN, instance,
1576 "instance not running on its primary node %s",
1579 for node, n_img in node_image.items():
1580 if node != node_current:
1581 test = instance in n_img.instances
1582 _ErrorIf(test, self.EINSTANCEWRONGNODE, instance,
1583 "instance should not run on node %s", node)
1585 diskdata = [(nname, success, status, idx)
1586 for (nname, disks) in diskstatus.items()
1587 for idx, (success, status) in enumerate(disks)]
1589 for nname, success, bdev_status, idx in diskdata:
1590 # the 'ghost node' construction in Exec() ensures that we have a
1592 snode = node_image[nname]
1593 bad_snode = snode.ghost or snode.offline
1594 _ErrorIf(instanceconfig.admin_up and not success and not bad_snode,
1595 self.EINSTANCEFAULTYDISK, instance,
1596 "couldn't retrieve status for disk/%s on %s: %s",
1597 idx, nname, bdev_status)
1598 _ErrorIf((instanceconfig.admin_up and success and
1599 bdev_status.ldisk_status == constants.LDS_FAULTY),
1600 self.EINSTANCEFAULTYDISK, instance,
1601 "disk/%s on %s is faulty", idx, nname)
1603 def _VerifyOrphanVolumes(self, node_vol_should, node_image, reserved):
1604 """Verify if there are any unknown volumes in the cluster.
1606 The .os, .swap and backup volumes are ignored. All other volumes are
1607 reported as unknown.
1609 @type reserved: L{ganeti.utils.FieldSet}
1610 @param reserved: a FieldSet of reserved volume names
1613 for node, n_img in node_image.items():
1614 if n_img.offline or n_img.rpc_fail or n_img.lvm_fail:
1615 # skip non-healthy nodes
1617 for volume in n_img.volumes:
1618 test = ((node not in node_vol_should or
1619 volume not in node_vol_should[node]) and
1620 not reserved.Matches(volume))
1621 self._ErrorIf(test, self.ENODEORPHANLV, node,
1622 "volume %s is unknown", volume)
1624 def _VerifyOrphanInstances(self, instancelist, node_image):
1625 """Verify the list of running instances.
1627 This checks what instances are running but unknown to the cluster.
1630 for node, n_img in node_image.items():
1631 for o_inst in n_img.instances:
1632 test = o_inst not in instancelist
1633 self._ErrorIf(test, self.ENODEORPHANINSTANCE, node,
1634 "instance %s on node %s should not exist", o_inst, node)
1636 def _VerifyNPlusOneMemory(self, node_image, instance_cfg):
1637 """Verify N+1 Memory Resilience.
1639 Check that if one single node dies we can still start all the
1640 instances it was primary for.
1643 for node, n_img in node_image.items():
1644 # This code checks that every node which is now listed as
1645 # secondary has enough memory to host all instances it is
1646 # supposed to should a single other node in the cluster fail.
1647 # FIXME: not ready for failover to an arbitrary node
1648 # FIXME: does not support file-backed instances
1649 # WARNING: we currently take into account down instances as well
1650 # as up ones, considering that even if they're down someone
1651 # might want to start them even in the event of a node failure.
1653 # we're skipping offline nodes from the N+1 warning, since
1654 # most likely we don't have good memory infromation from them;
1655 # we already list instances living on such nodes, and that's
1658 for prinode, instances in n_img.sbp.items():
1660 for instance in instances:
1661 bep = self.cfg.GetClusterInfo().FillBE(instance_cfg[instance])
1662 if bep[constants.BE_AUTO_BALANCE]:
1663 needed_mem += bep[constants.BE_MEMORY]
1664 test = n_img.mfree < needed_mem
1665 self._ErrorIf(test, self.ENODEN1, node,
1666 "not enough memory to accomodate instance failovers"
1667 " should node %s fail (%dMiB needed, %dMiB available)",
1668 prinode, needed_mem, n_img.mfree)
1670 def _VerifyNodeFiles(self, ninfo, nresult, file_list, local_cksum,
1672 """Verifies and computes the node required file checksums.
1674 @type ninfo: L{objects.Node}
1675 @param ninfo: the node to check
1676 @param nresult: the remote results for the node
1677 @param file_list: required list of files
1678 @param local_cksum: dictionary of local files and their checksums
1679 @param master_files: list of files that only masters should have
1683 _ErrorIf = self._ErrorIf # pylint: disable-msg=C0103
1685 remote_cksum = nresult.get(constants.NV_FILELIST, None)
1686 test = not isinstance(remote_cksum, dict)
1687 _ErrorIf(test, self.ENODEFILECHECK, node,
1688 "node hasn't returned file checksum data")
1692 for file_name in file_list:
1693 node_is_mc = ninfo.master_candidate
1694 must_have = (file_name not in master_files) or node_is_mc
1696 test1 = file_name not in remote_cksum
1698 test2 = not test1 and remote_cksum[file_name] != local_cksum[file_name]
1700 test3 = not test1 and remote_cksum[file_name] == local_cksum[file_name]
1701 _ErrorIf(test1 and must_have, self.ENODEFILECHECK, node,
1702 "file '%s' missing", file_name)
1703 _ErrorIf(test2 and must_have, self.ENODEFILECHECK, node,
1704 "file '%s' has wrong checksum", file_name)
1705 # not candidate and this is not a must-have file
1706 _ErrorIf(test2 and not must_have, self.ENODEFILECHECK, node,
1707 "file '%s' should not exist on non master"
1708 " candidates (and the file is outdated)", file_name)
1709 # all good, except non-master/non-must have combination
1710 _ErrorIf(test3 and not must_have, self.ENODEFILECHECK, node,
1711 "file '%s' should not exist"
1712 " on non master candidates", file_name)
1714 def _VerifyNodeDrbd(self, ninfo, nresult, instanceinfo, drbd_helper,
1716 """Verifies and the node DRBD status.
1718 @type ninfo: L{objects.Node}
1719 @param ninfo: the node to check
1720 @param nresult: the remote results for the node
1721 @param instanceinfo: the dict of instances
1722 @param drbd_helper: the configured DRBD usermode helper
1723 @param drbd_map: the DRBD map as returned by
1724 L{ganeti.config.ConfigWriter.ComputeDRBDMap}
1728 _ErrorIf = self._ErrorIf # pylint: disable-msg=C0103
1731 helper_result = nresult.get(constants.NV_DRBDHELPER, None)
1732 test = (helper_result == None)
1733 _ErrorIf(test, self.ENODEDRBDHELPER, node,
1734 "no drbd usermode helper returned")
1736 status, payload = helper_result
1738 _ErrorIf(test, self.ENODEDRBDHELPER, node,
1739 "drbd usermode helper check unsuccessful: %s", payload)
1740 test = status and (payload != drbd_helper)
1741 _ErrorIf(test, self.ENODEDRBDHELPER, node,
1742 "wrong drbd usermode helper: %s", payload)
1744 # compute the DRBD minors
1746 for minor, instance in drbd_map[node].items():
1747 test = instance not in instanceinfo
1748 _ErrorIf(test, self.ECLUSTERCFG, None,
1749 "ghost instance '%s' in temporary DRBD map", instance)
1750 # ghost instance should not be running, but otherwise we
1751 # don't give double warnings (both ghost instance and
1752 # unallocated minor in use)
1754 node_drbd[minor] = (instance, False)
1756 instance = instanceinfo[instance]
1757 node_drbd[minor] = (instance.name, instance.admin_up)
1759 # and now check them
1760 used_minors = nresult.get(constants.NV_DRBDLIST, [])
1761 test = not isinstance(used_minors, (tuple, list))
1762 _ErrorIf(test, self.ENODEDRBD, node,
1763 "cannot parse drbd status file: %s", str(used_minors))
1765 # we cannot check drbd status
1768 for minor, (iname, must_exist) in node_drbd.items():
1769 test = minor not in used_minors and must_exist
1770 _ErrorIf(test, self.ENODEDRBD, node,
1771 "drbd minor %d of instance %s is not active", minor, iname)
1772 for minor in used_minors:
1773 test = minor not in node_drbd
1774 _ErrorIf(test, self.ENODEDRBD, node,
1775 "unallocated drbd minor %d is in use", minor)
1777 def _UpdateNodeOS(self, ninfo, nresult, nimg):
1778 """Builds the node OS structures.
1780 @type ninfo: L{objects.Node}
1781 @param ninfo: the node to check
1782 @param nresult: the remote results for the node
1783 @param nimg: the node image object
1787 _ErrorIf = self._ErrorIf # pylint: disable-msg=C0103
1789 remote_os = nresult.get(constants.NV_OSLIST, None)
1790 test = (not isinstance(remote_os, list) or
1791 not compat.all(isinstance(v, list) and len(v) == 7
1792 for v in remote_os))
1794 _ErrorIf(test, self.ENODEOS, node,
1795 "node hasn't returned valid OS data")
1804 for (name, os_path, status, diagnose,
1805 variants, parameters, api_ver) in nresult[constants.NV_OSLIST]:
1807 if name not in os_dict:
1810 # parameters is a list of lists instead of list of tuples due to
1811 # JSON lacking a real tuple type, fix it:
1812 parameters = [tuple(v) for v in parameters]
1813 os_dict[name].append((os_path, status, diagnose,
1814 set(variants), set(parameters), set(api_ver)))
1816 nimg.oslist = os_dict
1818 def _VerifyNodeOS(self, ninfo, nimg, base):
1819 """Verifies the node OS list.
1821 @type ninfo: L{objects.Node}
1822 @param ninfo: the node to check
1823 @param nimg: the node image object
1824 @param base: the 'template' node we match against (e.g. from the master)
1828 _ErrorIf = self._ErrorIf # pylint: disable-msg=C0103
1830 assert not nimg.os_fail, "Entered _VerifyNodeOS with failed OS rpc?"
1832 beautify_params = lambda l: ["%s: %s" % (k, v) for (k, v) in l]
1833 for os_name, os_data in nimg.oslist.items():
1834 assert os_data, "Empty OS status for OS %s?!" % os_name
1835 f_path, f_status, f_diag, f_var, f_param, f_api = os_data[0]
1836 _ErrorIf(not f_status, self.ENODEOS, node,
1837 "Invalid OS %s (located at %s): %s", os_name, f_path, f_diag)
1838 _ErrorIf(len(os_data) > 1, self.ENODEOS, node,
1839 "OS '%s' has multiple entries (first one shadows the rest): %s",
1840 os_name, utils.CommaJoin([v[0] for v in os_data]))
1841 # this will catched in backend too
1842 _ErrorIf(compat.any(v >= constants.OS_API_V15 for v in f_api)
1843 and not f_var, self.ENODEOS, node,
1844 "OS %s with API at least %d does not declare any variant",
1845 os_name, constants.OS_API_V15)
1846 # comparisons with the 'base' image
1847 test = os_name not in base.oslist
1848 _ErrorIf(test, self.ENODEOS, node,
1849 "Extra OS %s not present on reference node (%s)",
1853 assert base.oslist[os_name], "Base node has empty OS status?"
1854 _, b_status, _, b_var, b_param, b_api = base.oslist[os_name][0]
1856 # base OS is invalid, skipping
1858 for kind, a, b in [("API version", f_api, b_api),
1859 ("variants list", f_var, b_var),
1860 ("parameters", beautify_params(f_param),
1861 beautify_params(b_param))]:
1862 _ErrorIf(a != b, self.ENODEOS, node,
1863 "OS %s for %s differs from reference node %s: [%s] vs. [%s]",
1864 kind, os_name, base.name,
1865 utils.CommaJoin(sorted(a)), utils.CommaJoin(sorted(b)))
1867 # check any missing OSes
1868 missing = set(base.oslist.keys()).difference(nimg.oslist.keys())
1869 _ErrorIf(missing, self.ENODEOS, node,
1870 "OSes present on reference node %s but missing on this node: %s",
1871 base.name, utils.CommaJoin(missing))
1873 def _VerifyOob(self, ninfo, nresult):
1874 """Verifies out of band functionality of a node.
1876 @type ninfo: L{objects.Node}
1877 @param ninfo: the node to check
1878 @param nresult: the remote results for the node
1882 # We just have to verify the paths on master and/or master candidates
1883 # as the oob helper is invoked on the master
1884 if ((ninfo.master_candidate or ninfo.master_capable) and
1885 constants.NV_OOB_PATHS in nresult):
1886 for path_result in nresult[constants.NV_OOB_PATHS]:
1887 self._ErrorIf(path_result, self.ENODEOOBPATH, node, path_result)
1889 def _UpdateNodeVolumes(self, ninfo, nresult, nimg, vg_name):
1890 """Verifies and updates the node volume data.
1892 This function will update a L{NodeImage}'s internal structures
1893 with data from the remote call.
1895 @type ninfo: L{objects.Node}
1896 @param ninfo: the node to check
1897 @param nresult: the remote results for the node
1898 @param nimg: the node image object
1899 @param vg_name: the configured VG name
1903 _ErrorIf = self._ErrorIf # pylint: disable-msg=C0103
1905 nimg.lvm_fail = True
1906 lvdata = nresult.get(constants.NV_LVLIST, "Missing LV data")
1909 elif isinstance(lvdata, basestring):
1910 _ErrorIf(True, self.ENODELVM, node, "LVM problem on node: %s",
1911 utils.SafeEncode(lvdata))
1912 elif not isinstance(lvdata, dict):
1913 _ErrorIf(True, self.ENODELVM, node, "rpc call to node failed (lvlist)")
1915 nimg.volumes = lvdata
1916 nimg.lvm_fail = False
1918 def _UpdateNodeInstances(self, ninfo, nresult, nimg):
1919 """Verifies and updates the node instance list.
1921 If the listing was successful, then updates this node's instance
1922 list. Otherwise, it marks the RPC call as failed for the instance
1925 @type ninfo: L{objects.Node}
1926 @param ninfo: the node to check
1927 @param nresult: the remote results for the node
1928 @param nimg: the node image object
1931 idata = nresult.get(constants.NV_INSTANCELIST, None)
1932 test = not isinstance(idata, list)
1933 self._ErrorIf(test, self.ENODEHV, ninfo.name, "rpc call to node failed"
1934 " (instancelist): %s", utils.SafeEncode(str(idata)))
1936 nimg.hyp_fail = True
1938 nimg.instances = idata
1940 def _UpdateNodeInfo(self, ninfo, nresult, nimg, vg_name):
1941 """Verifies and computes a node information map
1943 @type ninfo: L{objects.Node}
1944 @param ninfo: the node to check
1945 @param nresult: the remote results for the node
1946 @param nimg: the node image object
1947 @param vg_name: the configured VG name
1951 _ErrorIf = self._ErrorIf # pylint: disable-msg=C0103
1953 # try to read free memory (from the hypervisor)
1954 hv_info = nresult.get(constants.NV_HVINFO, None)
1955 test = not isinstance(hv_info, dict) or "memory_free" not in hv_info
1956 _ErrorIf(test, self.ENODEHV, node, "rpc call to node failed (hvinfo)")
1959 nimg.mfree = int(hv_info["memory_free"])
1960 except (ValueError, TypeError):
1961 _ErrorIf(True, self.ENODERPC, node,
1962 "node returned invalid nodeinfo, check hypervisor")
1964 # FIXME: devise a free space model for file based instances as well
1965 if vg_name is not None:
1966 test = (constants.NV_VGLIST not in nresult or
1967 vg_name not in nresult[constants.NV_VGLIST])
1968 _ErrorIf(test, self.ENODELVM, node,
1969 "node didn't return data for the volume group '%s'"
1970 " - it is either missing or broken", vg_name)
1973 nimg.dfree = int(nresult[constants.NV_VGLIST][vg_name])
1974 except (ValueError, TypeError):
1975 _ErrorIf(True, self.ENODERPC, node,
1976 "node returned invalid LVM info, check LVM status")
1978 def _CollectDiskInfo(self, nodelist, node_image, instanceinfo):
1979 """Gets per-disk status information for all instances.
1981 @type nodelist: list of strings
1982 @param nodelist: Node names
1983 @type node_image: dict of (name, L{objects.Node})
1984 @param node_image: Node objects
1985 @type instanceinfo: dict of (name, L{objects.Instance})
1986 @param instanceinfo: Instance objects
1987 @rtype: {instance: {node: [(succes, payload)]}}
1988 @return: a dictionary of per-instance dictionaries with nodes as
1989 keys and disk information as values; the disk information is a
1990 list of tuples (success, payload)
1993 _ErrorIf = self._ErrorIf # pylint: disable-msg=C0103
1996 node_disks_devonly = {}
1997 diskless_instances = set()
1998 diskless = constants.DT_DISKLESS
2000 for nname in nodelist:
2001 node_instances = list(itertools.chain(node_image[nname].pinst,
2002 node_image[nname].sinst))
2003 diskless_instances.update(inst for inst in node_instances
2004 if instanceinfo[inst].disk_template == diskless)
2005 disks = [(inst, disk)
2006 for inst in node_instances
2007 for disk in instanceinfo[inst].disks]
2010 # No need to collect data
2013 node_disks[nname] = disks
2015 # Creating copies as SetDiskID below will modify the objects and that can
2016 # lead to incorrect data returned from nodes
2017 devonly = [dev.Copy() for (_, dev) in disks]
2020 self.cfg.SetDiskID(dev, nname)
2022 node_disks_devonly[nname] = devonly
2024 assert len(node_disks) == len(node_disks_devonly)
2026 # Collect data from all nodes with disks
2027 result = self.rpc.call_blockdev_getmirrorstatus_multi(node_disks.keys(),
2030 assert len(result) == len(node_disks)
2034 for (nname, nres) in result.items():
2035 disks = node_disks[nname]
2038 # No data from this node
2039 data = len(disks) * [(False, "node offline")]
2042 _ErrorIf(msg, self.ENODERPC, nname,
2043 "while getting disk information: %s", msg)
2045 # No data from this node
2046 data = len(disks) * [(False, msg)]
2049 for idx, i in enumerate(nres.payload):
2050 if isinstance(i, (tuple, list)) and len(i) == 2:
2053 logging.warning("Invalid result from node %s, entry %d: %s",
2055 data.append((False, "Invalid result from the remote node"))
2057 for ((inst, _), status) in zip(disks, data):
2058 instdisk.setdefault(inst, {}).setdefault(nname, []).append(status)
2060 # Add empty entries for diskless instances.
2061 for inst in diskless_instances:
2062 assert inst not in instdisk
2065 assert compat.all(len(statuses) == len(instanceinfo[inst].disks) and
2066 len(nnames) <= len(instanceinfo[inst].all_nodes) and
2067 compat.all(isinstance(s, (tuple, list)) and
2068 len(s) == 2 for s in statuses)
2069 for inst, nnames in instdisk.items()
2070 for nname, statuses in nnames.items())
2071 assert set(instdisk) == set(instanceinfo), "instdisk consistency failure"
2075 def _VerifyHVP(self, hvp_data):
2076 """Verifies locally the syntax of the hypervisor parameters.
2079 for item, hv_name, hv_params in hvp_data:
2080 msg = ("hypervisor %s parameters syntax check (source %s): %%s" %
2083 hv_class = hypervisor.GetHypervisor(hv_name)
2084 utils.ForceDictType(hv_params, constants.HVS_PARAMETER_TYPES)
2085 hv_class.CheckParameterSyntax(hv_params)
2086 except errors.GenericError, err:
2087 self._ErrorIf(True, self.ECLUSTERCFG, None, msg % str(err))
2090 def BuildHooksEnv(self):
2093 Cluster-Verify hooks just ran in the post phase and their failure makes
2094 the output be logged in the verify output and the verification to fail.
2097 all_nodes = self.cfg.GetNodeList()
2099 "CLUSTER_TAGS": " ".join(self.cfg.GetClusterInfo().GetTags())
2101 for node in self.cfg.GetAllNodesInfo().values():
2102 env["NODE_TAGS_%s" % node.name] = " ".join(node.GetTags())
2104 return env, [], all_nodes
2106 def Exec(self, feedback_fn):
2107 """Verify integrity of cluster, performing various test on nodes.
2110 # This method has too many local variables. pylint: disable-msg=R0914
2112 _ErrorIf = self._ErrorIf # pylint: disable-msg=C0103
2113 verbose = self.op.verbose
2114 self._feedback_fn = feedback_fn
2115 feedback_fn("* Verifying global settings")
2116 for msg in self.cfg.VerifyConfig():
2117 _ErrorIf(True, self.ECLUSTERCFG, None, msg)
2119 # Check the cluster certificates
2120 for cert_filename in constants.ALL_CERT_FILES:
2121 (errcode, msg) = _VerifyCertificate(cert_filename)
2122 _ErrorIf(errcode, self.ECLUSTERCERT, None, msg, code=errcode)
2124 vg_name = self.cfg.GetVGName()
2125 drbd_helper = self.cfg.GetDRBDHelper()
2126 hypervisors = self.cfg.GetClusterInfo().enabled_hypervisors
2127 cluster = self.cfg.GetClusterInfo()
2128 nodeinfo_byname = self.cfg.GetAllNodesInfo()
2129 nodelist = utils.NiceSort(nodeinfo_byname.keys())
2130 nodeinfo = [nodeinfo_byname[nname] for nname in nodelist]
2131 instanceinfo = self.cfg.GetAllInstancesInfo()
2132 instancelist = utils.NiceSort(instanceinfo.keys())
2133 groupinfo = self.cfg.GetAllNodeGroupsInfo()
2134 i_non_redundant = [] # Non redundant instances
2135 i_non_a_balanced = [] # Non auto-balanced instances
2136 n_offline = 0 # Count of offline nodes
2137 n_drained = 0 # Count of nodes being drained
2138 node_vol_should = {}
2140 # FIXME: verify OS list
2141 # do local checksums
2142 master_files = [constants.CLUSTER_CONF_FILE]
2143 master_node = self.master_node = self.cfg.GetMasterNode()
2144 master_ip = self.cfg.GetMasterIP()
2146 file_names = ssconf.SimpleStore().GetFileList()
2147 file_names.extend(constants.ALL_CERT_FILES)
2148 file_names.extend(master_files)
2149 if cluster.modify_etc_hosts:
2150 file_names.append(constants.ETC_HOSTS)
2152 local_checksums = utils.FingerprintFiles(file_names)
2154 # Compute the set of hypervisor parameters
2156 for hv_name in hypervisors:
2157 hvp_data.append(("cluster", hv_name, cluster.GetHVDefaults(hv_name)))
2158 for os_name, os_hvp in cluster.os_hvp.items():
2159 for hv_name, hv_params in os_hvp.items():
2162 full_params = cluster.GetHVDefaults(hv_name, os_name=os_name)
2163 hvp_data.append(("os %s" % os_name, hv_name, full_params))
2164 # TODO: collapse identical parameter values in a single one
2165 for instance in instanceinfo.values():
2166 if not instance.hvparams:
2168 hvp_data.append(("instance %s" % instance.name, instance.hypervisor,
2169 cluster.FillHV(instance)))
2170 # and verify them locally
2171 self._VerifyHVP(hvp_data)
2173 feedback_fn("* Gathering data (%d nodes)" % len(nodelist))
2174 node_verify_param = {
2175 constants.NV_FILELIST: file_names,
2176 constants.NV_NODELIST: [node.name for node in nodeinfo
2177 if not node.offline],
2178 constants.NV_HYPERVISOR: hypervisors,
2179 constants.NV_HVPARAMS: hvp_data,
2180 constants.NV_NODENETTEST: [(node.name, node.primary_ip,
2181 node.secondary_ip) for node in nodeinfo
2182 if not node.offline],
2183 constants.NV_INSTANCELIST: hypervisors,
2184 constants.NV_VERSION: None,
2185 constants.NV_HVINFO: self.cfg.GetHypervisorType(),
2186 constants.NV_NODESETUP: None,
2187 constants.NV_TIME: None,
2188 constants.NV_MASTERIP: (master_node, master_ip),
2189 constants.NV_OSLIST: None,
2190 constants.NV_VMNODES: self.cfg.GetNonVmCapableNodeList(),
2193 if vg_name is not None:
2194 node_verify_param[constants.NV_VGLIST] = None
2195 node_verify_param[constants.NV_LVLIST] = vg_name
2196 node_verify_param[constants.NV_PVLIST] = [vg_name]
2197 node_verify_param[constants.NV_DRBDLIST] = None
2200 node_verify_param[constants.NV_DRBDHELPER] = drbd_helper
2203 # FIXME: this needs to be changed per node-group, not cluster-wide
2205 default_nicpp = cluster.nicparams[constants.PP_DEFAULT]
2206 if default_nicpp[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
2207 bridges.add(default_nicpp[constants.NIC_LINK])
2208 for instance in instanceinfo.values():
2209 for nic in instance.nics:
2210 full_nic = cluster.SimpleFillNIC(nic.nicparams)
2211 if full_nic[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
2212 bridges.add(full_nic[constants.NIC_LINK])
2215 node_verify_param[constants.NV_BRIDGES] = list(bridges)
2217 # Build our expected cluster state
2218 node_image = dict((node.name, self.NodeImage(offline=node.offline,
2220 vm_capable=node.vm_capable))
2221 for node in nodeinfo)
2225 for node in nodeinfo:
2226 path = _SupportsOob(self.cfg, node)
2227 if path and path not in oob_paths:
2228 oob_paths.append(path)
2231 node_verify_param[constants.NV_OOB_PATHS] = oob_paths
2233 for instance in instancelist:
2234 inst_config = instanceinfo[instance]
2236 for nname in inst_config.all_nodes:
2237 if nname not in node_image:
2239 gnode = self.NodeImage(name=nname)
2241 node_image[nname] = gnode
2243 inst_config.MapLVsByNode(node_vol_should)
2245 pnode = inst_config.primary_node
2246 node_image[pnode].pinst.append(instance)
2248 for snode in inst_config.secondary_nodes:
2249 nimg = node_image[snode]
2250 nimg.sinst.append(instance)
2251 if pnode not in nimg.sbp:
2252 nimg.sbp[pnode] = []
2253 nimg.sbp[pnode].append(instance)
2255 # At this point, we have the in-memory data structures complete,
2256 # except for the runtime information, which we'll gather next
2258 # Due to the way our RPC system works, exact response times cannot be
2259 # guaranteed (e.g. a broken node could run into a timeout). By keeping the
2260 # time before and after executing the request, we can at least have a time
2262 nvinfo_starttime = time.time()
2263 all_nvinfo = self.rpc.call_node_verify(nodelist, node_verify_param,
2264 self.cfg.GetClusterName())
2265 nvinfo_endtime = time.time()
2267 all_drbd_map = self.cfg.ComputeDRBDMap()
2269 feedback_fn("* Gathering disk information (%s nodes)" % len(nodelist))
2270 instdisk = self._CollectDiskInfo(nodelist, node_image, instanceinfo)
2272 feedback_fn("* Verifying node status")
2276 for node_i in nodeinfo:
2278 nimg = node_image[node]
2282 feedback_fn("* Skipping offline node %s" % (node,))
2286 if node == master_node:
2288 elif node_i.master_candidate:
2289 ntype = "master candidate"
2290 elif node_i.drained:
2296 feedback_fn("* Verifying node %s (%s)" % (node, ntype))
2298 msg = all_nvinfo[node].fail_msg
2299 _ErrorIf(msg, self.ENODERPC, node, "while contacting node: %s", msg)
2301 nimg.rpc_fail = True
2304 nresult = all_nvinfo[node].payload
2306 nimg.call_ok = self._VerifyNode(node_i, nresult)
2307 self._VerifyNodeTime(node_i, nresult, nvinfo_starttime, nvinfo_endtime)
2308 self._VerifyNodeNetwork(node_i, nresult)
2309 self._VerifyNodeFiles(node_i, nresult, file_names, local_checksums,
2312 self._VerifyOob(node_i, nresult)
2315 self._VerifyNodeLVM(node_i, nresult, vg_name)
2316 self._VerifyNodeDrbd(node_i, nresult, instanceinfo, drbd_helper,
2319 self._UpdateNodeVolumes(node_i, nresult, nimg, vg_name)
2320 self._UpdateNodeInstances(node_i, nresult, nimg)
2321 self._UpdateNodeInfo(node_i, nresult, nimg, vg_name)
2322 self._UpdateNodeOS(node_i, nresult, nimg)
2323 if not nimg.os_fail:
2324 if refos_img is None:
2326 self._VerifyNodeOS(node_i, nimg, refos_img)
2327 self._VerifyNodeBridges(node_i, nresult, bridges)
2329 feedback_fn("* Verifying instance status")
2330 for instance in instancelist:
2332 feedback_fn("* Verifying instance %s" % instance)
2333 inst_config = instanceinfo[instance]
2334 self._VerifyInstance(instance, inst_config, node_image,
2336 inst_nodes_offline = []
2338 pnode = inst_config.primary_node
2339 pnode_img = node_image[pnode]
2340 _ErrorIf(pnode_img.rpc_fail and not pnode_img.offline,
2341 self.ENODERPC, pnode, "instance %s, connection to"
2342 " primary node failed", instance)
2344 _ErrorIf(pnode_img.offline, self.EINSTANCEBADNODE, instance,
2345 "instance lives on offline node %s", inst_config.primary_node)
2347 # If the instance is non-redundant we cannot survive losing its primary
2348 # node, so we are not N+1 compliant. On the other hand we have no disk
2349 # templates with more than one secondary so that situation is not well
2351 # FIXME: does not support file-backed instances
2352 if not inst_config.secondary_nodes:
2353 i_non_redundant.append(instance)
2355 _ErrorIf(len(inst_config.secondary_nodes) > 1, self.EINSTANCELAYOUT,
2356 instance, "instance has multiple secondary nodes: %s",
2357 utils.CommaJoin(inst_config.secondary_nodes),
2358 code=self.ETYPE_WARNING)
2360 if inst_config.disk_template in constants.DTS_NET_MIRROR:
2361 pnode = inst_config.primary_node
2362 instance_nodes = utils.NiceSort(inst_config.all_nodes)
2363 instance_groups = {}
2365 for node in instance_nodes:
2366 instance_groups.setdefault(nodeinfo_byname[node].group,
2370 "%s (group %s)" % (utils.CommaJoin(nodes), groupinfo[group].name)
2371 # Sort so that we always list the primary node first.
2372 for group, nodes in sorted(instance_groups.items(),
2373 key=lambda (_, nodes): pnode in nodes,
2376 self._ErrorIf(len(instance_groups) > 1, self.EINSTANCESPLITGROUPS,
2377 instance, "instance has primary and secondary nodes in"
2378 " different groups: %s", utils.CommaJoin(pretty_list),
2379 code=self.ETYPE_WARNING)
2381 if not cluster.FillBE(inst_config)[constants.BE_AUTO_BALANCE]:
2382 i_non_a_balanced.append(instance)
2384 for snode in inst_config.secondary_nodes:
2385 s_img = node_image[snode]
2386 _ErrorIf(s_img.rpc_fail and not s_img.offline, self.ENODERPC, snode,
2387 "instance %s, connection to secondary node failed", instance)
2390 inst_nodes_offline.append(snode)
2392 # warn that the instance lives on offline nodes
2393 _ErrorIf(inst_nodes_offline, self.EINSTANCEBADNODE, instance,
2394 "instance has offline secondary node(s) %s",
2395 utils.CommaJoin(inst_nodes_offline))
2396 # ... or ghost/non-vm_capable nodes
2397 for node in inst_config.all_nodes:
2398 _ErrorIf(node_image[node].ghost, self.EINSTANCEBADNODE, instance,
2399 "instance lives on ghost node %s", node)
2400 _ErrorIf(not node_image[node].vm_capable, self.EINSTANCEBADNODE,
2401 instance, "instance lives on non-vm_capable node %s", node)
2403 feedback_fn("* Verifying orphan volumes")
2404 reserved = utils.FieldSet(*cluster.reserved_lvs)
2405 self._VerifyOrphanVolumes(node_vol_should, node_image, reserved)
2407 feedback_fn("* Verifying orphan instances")
2408 self._VerifyOrphanInstances(instancelist, node_image)
2410 if constants.VERIFY_NPLUSONE_MEM not in self.op.skip_checks:
2411 feedback_fn("* Verifying N+1 Memory redundancy")
2412 self._VerifyNPlusOneMemory(node_image, instanceinfo)
2414 feedback_fn("* Other Notes")
2416 feedback_fn(" - NOTICE: %d non-redundant instance(s) found."
2417 % len(i_non_redundant))
2419 if i_non_a_balanced:
2420 feedback_fn(" - NOTICE: %d non-auto-balanced instance(s) found."
2421 % len(i_non_a_balanced))
2424 feedback_fn(" - NOTICE: %d offline node(s) found." % n_offline)
2427 feedback_fn(" - NOTICE: %d drained node(s) found." % n_drained)
2431 def HooksCallBack(self, phase, hooks_results, feedback_fn, lu_result):
2432 """Analyze the post-hooks' result
2434 This method analyses the hook result, handles it, and sends some
2435 nicely-formatted feedback back to the user.
2437 @param phase: one of L{constants.HOOKS_PHASE_POST} or
2438 L{constants.HOOKS_PHASE_PRE}; it denotes the hooks phase
2439 @param hooks_results: the results of the multi-node hooks rpc call
2440 @param feedback_fn: function used send feedback back to the caller
2441 @param lu_result: previous Exec result
2442 @return: the new Exec result, based on the previous result
2446 # We only really run POST phase hooks, and are only interested in
2448 if phase == constants.HOOKS_PHASE_POST:
2449 # Used to change hooks' output to proper indentation
2450 feedback_fn("* Hooks Results")
2451 assert hooks_results, "invalid result from hooks"
2453 for node_name in hooks_results:
2454 res = hooks_results[node_name]
2456 test = msg and not res.offline
2457 self._ErrorIf(test, self.ENODEHOOKS, node_name,
2458 "Communication failure in hooks execution: %s", msg)
2459 if res.offline or msg:
2460 # No need to investigate payload if node is offline or gave an error.
2461 # override manually lu_result here as _ErrorIf only
2462 # overrides self.bad
2465 for script, hkr, output in res.payload:
2466 test = hkr == constants.HKR_FAIL
2467 self._ErrorIf(test, self.ENODEHOOKS, node_name,
2468 "Script %s failed, output:", script)
2470 output = self._HOOKS_INDENT_RE.sub(' ', output)
2471 feedback_fn("%s" % output)
2477 class LUClusterVerifyDisks(NoHooksLU):
2478 """Verifies the cluster disks status.
2483 def ExpandNames(self):
2484 self.needed_locks = {
2485 locking.LEVEL_NODE: locking.ALL_SET,
2486 locking.LEVEL_INSTANCE: locking.ALL_SET,
2488 self.share_locks = dict.fromkeys(locking.LEVELS, 1)
2490 def Exec(self, feedback_fn):
2491 """Verify integrity of cluster disks.
2493 @rtype: tuple of three items
2494 @return: a tuple of (dict of node-to-node_error, list of instances
2495 which need activate-disks, dict of instance: (node, volume) for
2499 result = res_nodes, res_instances, res_missing = {}, [], {}
2501 nodes = utils.NiceSort(self.cfg.GetVmCapableNodeList())
2502 instances = self.cfg.GetAllInstancesInfo().values()
2505 for inst in instances:
2507 if not inst.admin_up:
2509 inst.MapLVsByNode(inst_lvs)
2510 # transform { iname: {node: [vol,],},} to {(node, vol): iname}
2511 for node, vol_list in inst_lvs.iteritems():
2512 for vol in vol_list:
2513 nv_dict[(node, vol)] = inst
2518 node_lvs = self.rpc.call_lv_list(nodes, [])
2519 for node, node_res in node_lvs.items():
2520 if node_res.offline:
2522 msg = node_res.fail_msg
2524 logging.warning("Error enumerating LVs on node %s: %s", node, msg)
2525 res_nodes[node] = msg
2528 lvs = node_res.payload
2529 for lv_name, (_, _, lv_online) in lvs.items():
2530 inst = nv_dict.pop((node, lv_name), None)
2531 if (not lv_online and inst is not None
2532 and inst.name not in res_instances):
2533 res_instances.append(inst.name)
2535 # any leftover items in nv_dict are missing LVs, let's arrange the
2537 for key, inst in nv_dict.iteritems():
2538 if inst.name not in res_missing:
2539 res_missing[inst.name] = []
2540 res_missing[inst.name].append(key)
2545 class LUClusterRepairDiskSizes(NoHooksLU):
2546 """Verifies the cluster disks sizes.
2551 def ExpandNames(self):
2552 if self.op.instances:
2553 self.wanted_names = []
2554 for name in self.op.instances:
2555 full_name = _ExpandInstanceName(self.cfg, name)
2556 self.wanted_names.append(full_name)
2557 self.needed_locks = {
2558 locking.LEVEL_NODE: [],
2559 locking.LEVEL_INSTANCE: self.wanted_names,
2561 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
2563 self.wanted_names = None
2564 self.needed_locks = {
2565 locking.LEVEL_NODE: locking.ALL_SET,
2566 locking.LEVEL_INSTANCE: locking.ALL_SET,
2568 self.share_locks = dict(((i, 1) for i in locking.LEVELS))
2570 def DeclareLocks(self, level):
2571 if level == locking.LEVEL_NODE and self.wanted_names is not None:
2572 self._LockInstancesNodes(primary_only=True)
2574 def CheckPrereq(self):
2575 """Check prerequisites.
2577 This only checks the optional instance list against the existing names.
2580 if self.wanted_names is None:
2581 self.wanted_names = self.acquired_locks[locking.LEVEL_INSTANCE]
2583 self.wanted_instances = [self.cfg.GetInstanceInfo(name) for name
2584 in self.wanted_names]
2586 def _EnsureChildSizes(self, disk):
2587 """Ensure children of the disk have the needed disk size.
2589 This is valid mainly for DRBD8 and fixes an issue where the
2590 children have smaller disk size.
2592 @param disk: an L{ganeti.objects.Disk} object
2595 if disk.dev_type == constants.LD_DRBD8:
2596 assert disk.children, "Empty children for DRBD8?"
2597 fchild = disk.children[0]
2598 mismatch = fchild.size < disk.size
2600 self.LogInfo("Child disk has size %d, parent %d, fixing",
2601 fchild.size, disk.size)
2602 fchild.size = disk.size
2604 # and we recurse on this child only, not on the metadev
2605 return self._EnsureChildSizes(fchild) or mismatch
2609 def Exec(self, feedback_fn):
2610 """Verify the size of cluster disks.
2613 # TODO: check child disks too
2614 # TODO: check differences in size between primary/secondary nodes
2616 for instance in self.wanted_instances:
2617 pnode = instance.primary_node
2618 if pnode not in per_node_disks:
2619 per_node_disks[pnode] = []
2620 for idx, disk in enumerate(instance.disks):
2621 per_node_disks[pnode].append((instance, idx, disk))
2624 for node, dskl in per_node_disks.items():
2625 newl = [v[2].Copy() for v in dskl]
2627 self.cfg.SetDiskID(dsk, node)
2628 result = self.rpc.call_blockdev_getsize(node, newl)
2630 self.LogWarning("Failure in blockdev_getsize call to node"
2631 " %s, ignoring", node)
2633 if len(result.payload) != len(dskl):
2634 logging.warning("Invalid result from node %s: len(dksl)=%d,"
2635 " result.payload=%s", node, len(dskl), result.payload)
2636 self.LogWarning("Invalid result from node %s, ignoring node results",
2639 for ((instance, idx, disk), size) in zip(dskl, result.payload):
2641 self.LogWarning("Disk %d of instance %s did not return size"
2642 " information, ignoring", idx, instance.name)
2644 if not isinstance(size, (int, long)):
2645 self.LogWarning("Disk %d of instance %s did not return valid"
2646 " size information, ignoring", idx, instance.name)
2649 if size != disk.size:
2650 self.LogInfo("Disk %d of instance %s has mismatched size,"
2651 " correcting: recorded %d, actual %d", idx,
2652 instance.name, disk.size, size)
2654 self.cfg.Update(instance, feedback_fn)
2655 changed.append((instance.name, idx, size))
2656 if self._EnsureChildSizes(disk):
2657 self.cfg.Update(instance, feedback_fn)
2658 changed.append((instance.name, idx, disk.size))
2662 class LUClusterRename(LogicalUnit):
2663 """Rename the cluster.
2666 HPATH = "cluster-rename"
2667 HTYPE = constants.HTYPE_CLUSTER
2669 def BuildHooksEnv(self):
2674 "OP_TARGET": self.cfg.GetClusterName(),
2675 "NEW_NAME": self.op.name,
2677 mn = self.cfg.GetMasterNode()
2678 all_nodes = self.cfg.GetNodeList()
2679 return env, [mn], all_nodes
2681 def CheckPrereq(self):
2682 """Verify that the passed name is a valid one.
2685 hostname = netutils.GetHostname(name=self.op.name,
2686 family=self.cfg.GetPrimaryIPFamily())
2688 new_name = hostname.name
2689 self.ip = new_ip = hostname.ip
2690 old_name = self.cfg.GetClusterName()
2691 old_ip = self.cfg.GetMasterIP()
2692 if new_name == old_name and new_ip == old_ip:
2693 raise errors.OpPrereqError("Neither the name nor the IP address of the"
2694 " cluster has changed",
2696 if new_ip != old_ip:
2697 if netutils.TcpPing(new_ip, constants.DEFAULT_NODED_PORT):
2698 raise errors.OpPrereqError("The given cluster IP address (%s) is"
2699 " reachable on the network" %
2700 new_ip, errors.ECODE_NOTUNIQUE)
2702 self.op.name = new_name
2704 def Exec(self, feedback_fn):
2705 """Rename the cluster.
2708 clustername = self.op.name
2711 # shutdown the master IP
2712 master = self.cfg.GetMasterNode()
2713 result = self.rpc.call_node_stop_master(master, False)
2714 result.Raise("Could not disable the master role")
2717 cluster = self.cfg.GetClusterInfo()
2718 cluster.cluster_name = clustername
2719 cluster.master_ip = ip
2720 self.cfg.Update(cluster, feedback_fn)
2722 # update the known hosts file
2723 ssh.WriteKnownHostsFile(self.cfg, constants.SSH_KNOWN_HOSTS_FILE)
2724 node_list = self.cfg.GetOnlineNodeList()
2726 node_list.remove(master)
2729 _UploadHelper(self, node_list, constants.SSH_KNOWN_HOSTS_FILE)
2731 result = self.rpc.call_node_start_master(master, False, False)
2732 msg = result.fail_msg
2734 self.LogWarning("Could not re-enable the master role on"
2735 " the master, please restart manually: %s", msg)
2740 class LUClusterSetParams(LogicalUnit):
2741 """Change the parameters of the cluster.
2744 HPATH = "cluster-modify"
2745 HTYPE = constants.HTYPE_CLUSTER
2748 def CheckArguments(self):
2752 if self.op.uid_pool:
2753 uidpool.CheckUidPool(self.op.uid_pool)
2755 if self.op.add_uids:
2756 uidpool.CheckUidPool(self.op.add_uids)
2758 if self.op.remove_uids:
2759 uidpool.CheckUidPool(self.op.remove_uids)
2761 def ExpandNames(self):
2762 # FIXME: in the future maybe other cluster params won't require checking on
2763 # all nodes to be modified.
2764 self.needed_locks = {
2765 locking.LEVEL_NODE: locking.ALL_SET,
2767 self.share_locks[locking.LEVEL_NODE] = 1
2769 def BuildHooksEnv(self):
2774 "OP_TARGET": self.cfg.GetClusterName(),
2775 "NEW_VG_NAME": self.op.vg_name,
2777 mn = self.cfg.GetMasterNode()
2778 return env, [mn], [mn]
2780 def CheckPrereq(self):
2781 """Check prerequisites.
2783 This checks whether the given params don't conflict and
2784 if the given volume group is valid.
2787 if self.op.vg_name is not None and not self.op.vg_name:
2788 if self.cfg.HasAnyDiskOfType(constants.LD_LV):
2789 raise errors.OpPrereqError("Cannot disable lvm storage while lvm-based"
2790 " instances exist", errors.ECODE_INVAL)
2792 if self.op.drbd_helper is not None and not self.op.drbd_helper:
2793 if self.cfg.HasAnyDiskOfType(constants.LD_DRBD8):
2794 raise errors.OpPrereqError("Cannot disable drbd helper while"
2795 " drbd-based instances exist",
2798 node_list = self.acquired_locks[locking.LEVEL_NODE]
2800 # if vg_name not None, checks given volume group on all nodes
2802 vglist = self.rpc.call_vg_list(node_list)
2803 for node in node_list:
2804 msg = vglist[node].fail_msg
2806 # ignoring down node
2807 self.LogWarning("Error while gathering data on node %s"
2808 " (ignoring node): %s", node, msg)
2810 vgstatus = utils.CheckVolumeGroupSize(vglist[node].payload,
2812 constants.MIN_VG_SIZE)
2814 raise errors.OpPrereqError("Error on node '%s': %s" %
2815 (node, vgstatus), errors.ECODE_ENVIRON)
2817 if self.op.drbd_helper:
2818 # checks given drbd helper on all nodes
2819 helpers = self.rpc.call_drbd_helper(node_list)
2820 for node in node_list:
2821 ninfo = self.cfg.GetNodeInfo(node)
2823 self.LogInfo("Not checking drbd helper on offline node %s", node)
2825 msg = helpers[node].fail_msg
2827 raise errors.OpPrereqError("Error checking drbd helper on node"
2828 " '%s': %s" % (node, msg),
2829 errors.ECODE_ENVIRON)
2830 node_helper = helpers[node].payload
2831 if node_helper != self.op.drbd_helper:
2832 raise errors.OpPrereqError("Error on node '%s': drbd helper is %s" %
2833 (node, node_helper), errors.ECODE_ENVIRON)
2835 self.cluster = cluster = self.cfg.GetClusterInfo()
2836 # validate params changes
2837 if self.op.beparams:
2838 utils.ForceDictType(self.op.beparams, constants.BES_PARAMETER_TYPES)
2839 self.new_beparams = cluster.SimpleFillBE(self.op.beparams)
2841 if self.op.ndparams:
2842 utils.ForceDictType(self.op.ndparams, constants.NDS_PARAMETER_TYPES)
2843 self.new_ndparams = cluster.SimpleFillND(self.op.ndparams)
2845 # TODO: we need a more general way to handle resetting
2846 # cluster-level parameters to default values
2847 if self.new_ndparams["oob_program"] == "":
2848 self.new_ndparams["oob_program"] = \
2849 constants.NDC_DEFAULTS[constants.ND_OOB_PROGRAM]
2851 if self.op.nicparams:
2852 utils.ForceDictType(self.op.nicparams, constants.NICS_PARAMETER_TYPES)
2853 self.new_nicparams = cluster.SimpleFillNIC(self.op.nicparams)
2854 objects.NIC.CheckParameterSyntax(self.new_nicparams)
2857 # check all instances for consistency
2858 for instance in self.cfg.GetAllInstancesInfo().values():
2859 for nic_idx, nic in enumerate(instance.nics):
2860 params_copy = copy.deepcopy(nic.nicparams)
2861 params_filled = objects.FillDict(self.new_nicparams, params_copy)
2863 # check parameter syntax
2865 objects.NIC.CheckParameterSyntax(params_filled)
2866 except errors.ConfigurationError, err:
2867 nic_errors.append("Instance %s, nic/%d: %s" %
2868 (instance.name, nic_idx, err))
2870 # if we're moving instances to routed, check that they have an ip
2871 target_mode = params_filled[constants.NIC_MODE]
2872 if target_mode == constants.NIC_MODE_ROUTED and not nic.ip:
2873 nic_errors.append("Instance %s, nic/%d: routed NIC with no ip"
2874 " address" % (instance.name, nic_idx))
2876 raise errors.OpPrereqError("Cannot apply the change, errors:\n%s" %
2877 "\n".join(nic_errors))
2879 # hypervisor list/parameters
2880 self.new_hvparams = new_hvp = objects.FillDict(cluster.hvparams, {})
2881 if self.op.hvparams:
2882 for hv_name, hv_dict in self.op.hvparams.items():
2883 if hv_name not in self.new_hvparams:
2884 self.new_hvparams[hv_name] = hv_dict
2886 self.new_hvparams[hv_name].update(hv_dict)
2888 # os hypervisor parameters
2889 self.new_os_hvp = objects.FillDict(cluster.os_hvp, {})
2891 for os_name, hvs in self.op.os_hvp.items():
2892 if os_name not in self.new_os_hvp:
2893 self.new_os_hvp[os_name] = hvs
2895 for hv_name, hv_dict in hvs.items():
2896 if hv_name not in self.new_os_hvp[os_name]:
2897 self.new_os_hvp[os_name][hv_name] = hv_dict
2899 self.new_os_hvp[os_name][hv_name].update(hv_dict)
2902 self.new_osp = objects.FillDict(cluster.osparams, {})
2903 if self.op.osparams:
2904 for os_name, osp in self.op.osparams.items():
2905 if os_name not in self.new_osp:
2906 self.new_osp[os_name] = {}
2908 self.new_osp[os_name] = _GetUpdatedParams(self.new_osp[os_name], osp,
2911 if not self.new_osp[os_name]:
2912 # we removed all parameters
2913 del self.new_osp[os_name]
2915 # check the parameter validity (remote check)
2916 _CheckOSParams(self, False, [self.cfg.GetMasterNode()],
2917 os_name, self.new_osp[os_name])
2919 # changes to the hypervisor list
2920 if self.op.enabled_hypervisors is not None:
2921 self.hv_list = self.op.enabled_hypervisors
2922 for hv in self.hv_list:
2923 # if the hypervisor doesn't already exist in the cluster
2924 # hvparams, we initialize it to empty, and then (in both
2925 # cases) we make sure to fill the defaults, as we might not
2926 # have a complete defaults list if the hypervisor wasn't
2928 if hv not in new_hvp:
2930 new_hvp[hv] = objects.FillDict(constants.HVC_DEFAULTS[hv], new_hvp[hv])
2931 utils.ForceDictType(new_hvp[hv], constants.HVS_PARAMETER_TYPES)
2933 self.hv_list = cluster.enabled_hypervisors
2935 if self.op.hvparams or self.op.enabled_hypervisors is not None:
2936 # either the enabled list has changed, or the parameters have, validate
2937 for hv_name, hv_params in self.new_hvparams.items():
2938 if ((self.op.hvparams and hv_name in self.op.hvparams) or
2939 (self.op.enabled_hypervisors and
2940 hv_name in self.op.enabled_hypervisors)):
2941 # either this is a new hypervisor, or its parameters have changed
2942 hv_class = hypervisor.GetHypervisor(hv_name)
2943 utils.ForceDictType(hv_params, constants.HVS_PARAMETER_TYPES)
2944 hv_class.CheckParameterSyntax(hv_params)
2945 _CheckHVParams(self, node_list, hv_name, hv_params)
2948 # no need to check any newly-enabled hypervisors, since the
2949 # defaults have already been checked in the above code-block
2950 for os_name, os_hvp in self.new_os_hvp.items():
2951 for hv_name, hv_params in os_hvp.items():
2952 utils.ForceDictType(hv_params, constants.HVS_PARAMETER_TYPES)
2953 # we need to fill in the new os_hvp on top of the actual hv_p
2954 cluster_defaults = self.new_hvparams.get(hv_name, {})
2955 new_osp = objects.FillDict(cluster_defaults, hv_params)
2956 hv_class = hypervisor.GetHypervisor(hv_name)
2957 hv_class.CheckParameterSyntax(new_osp)
2958 _CheckHVParams(self, node_list, hv_name, new_osp)
2960 if self.op.default_iallocator:
2961 alloc_script = utils.FindFile(self.op.default_iallocator,
2962 constants.IALLOCATOR_SEARCH_PATH,
2964 if alloc_script is None:
2965 raise errors.OpPrereqError("Invalid default iallocator script '%s'"
2966 " specified" % self.op.default_iallocator,
2969 def Exec(self, feedback_fn):
2970 """Change the parameters of the cluster.
2973 if self.op.vg_name is not None:
2974 new_volume = self.op.vg_name
2977 if new_volume != self.cfg.GetVGName():
2978 self.cfg.SetVGName(new_volume)
2980 feedback_fn("Cluster LVM configuration already in desired"
2981 " state, not changing")
2982 if self.op.drbd_helper is not None:
2983 new_helper = self.op.drbd_helper
2986 if new_helper != self.cfg.GetDRBDHelper():
2987 self.cfg.SetDRBDHelper(new_helper)
2989 feedback_fn("Cluster DRBD helper already in desired state,"
2991 if self.op.hvparams:
2992 self.cluster.hvparams = self.new_hvparams
2994 self.cluster.os_hvp = self.new_os_hvp
2995 if self.op.enabled_hypervisors is not None:
2996 self.cluster.hvparams = self.new_hvparams
2997 self.cluster.enabled_hypervisors = self.op.enabled_hypervisors
2998 if self.op.beparams:
2999 self.cluster.beparams[constants.PP_DEFAULT] = self.new_beparams
3000 if self.op.nicparams:
3001 self.cluster.nicparams[constants.PP_DEFAULT] = self.new_nicparams
3002 if self.op.osparams:
3003 self.cluster.osparams = self.new_osp
3004 if self.op.ndparams:
3005 self.cluster.ndparams = self.new_ndparams
3007 if self.op.candidate_pool_size is not None:
3008 self.cluster.candidate_pool_size = self.op.candidate_pool_size
3009 # we need to update the pool size here, otherwise the save will fail
3010 _AdjustCandidatePool(self, [])
3012 if self.op.maintain_node_health is not None:
3013 self.cluster.maintain_node_health = self.op.maintain_node_health
3015 if self.op.prealloc_wipe_disks is not None:
3016 self.cluster.prealloc_wipe_disks = self.op.prealloc_wipe_disks
3018 if self.op.add_uids is not None:
3019 uidpool.AddToUidPool(self.cluster.uid_pool, self.op.add_uids)
3021 if self.op.remove_uids is not None:
3022 uidpool.RemoveFromUidPool(self.cluster.uid_pool, self.op.remove_uids)
3024 if self.op.uid_pool is not None:
3025 self.cluster.uid_pool = self.op.uid_pool
3027 if self.op.default_iallocator is not None:
3028 self.cluster.default_iallocator = self.op.default_iallocator
3030 if self.op.reserved_lvs is not None:
3031 self.cluster.reserved_lvs = self.op.reserved_lvs
3033 def helper_os(aname, mods, desc):
3035 lst = getattr(self.cluster, aname)
3036 for key, val in mods:
3037 if key == constants.DDM_ADD:
3039 feedback_fn("OS %s already in %s, ignoring" % (val, desc))
3042 elif key == constants.DDM_REMOVE:
3046 feedback_fn("OS %s not found in %s, ignoring" % (val, desc))
3048 raise errors.ProgrammerError("Invalid modification '%s'" % key)
3050 if self.op.hidden_os:
3051 helper_os("hidden_os", self.op.hidden_os, "hidden")
3053 if self.op.blacklisted_os:
3054 helper_os("blacklisted_os", self.op.blacklisted_os, "blacklisted")
3056 if self.op.master_netdev:
3057 master = self.cfg.GetMasterNode()
3058 feedback_fn("Shutting down master ip on the current netdev (%s)" %
3059 self.cluster.master_netdev)
3060 result = self.rpc.call_node_stop_master(master, False)
3061 result.Raise("Could not disable the master ip")
3062 feedback_fn("Changing master_netdev from %s to %s" %
3063 (self.cluster.master_netdev, self.op.master_netdev))
3064 self.cluster.master_netdev = self.op.master_netdev
3066 self.cfg.Update(self.cluster, feedback_fn)
3068 if self.op.master_netdev:
3069 feedback_fn("Starting the master ip on the new master netdev (%s)" %
3070 self.op.master_netdev)
3071 result = self.rpc.call_node_start_master(master, False, False)
3073 self.LogWarning("Could not re-enable the master ip on"
3074 " the master, please restart manually: %s",
3078 def _UploadHelper(lu, nodes, fname):
3079 """Helper for uploading a file and showing warnings.
3082 if os.path.exists(fname):
3083 result = lu.rpc.call_upload_file(nodes, fname)
3084 for to_node, to_result in result.items():
3085 msg = to_result.fail_msg
3087 msg = ("Copy of file %s to node %s failed: %s" %
3088 (fname, to_node, msg))
3089 lu.proc.LogWarning(msg)
3092 def _RedistributeAncillaryFiles(lu, additional_nodes=None, additional_vm=True):
3093 """Distribute additional files which are part of the cluster configuration.
3095 ConfigWriter takes care of distributing the config and ssconf files, but
3096 there are more files which should be distributed to all nodes. This function
3097 makes sure those are copied.
3099 @param lu: calling logical unit
3100 @param additional_nodes: list of nodes not in the config to distribute to
3101 @type additional_vm: boolean
3102 @param additional_vm: whether the additional nodes are vm-capable or not
3105 # 1. Gather target nodes
3106 myself = lu.cfg.GetNodeInfo(lu.cfg.GetMasterNode())
3107 dist_nodes = lu.cfg.GetOnlineNodeList()
3108 nvm_nodes = lu.cfg.GetNonVmCapableNodeList()
3109 vm_nodes = [name for name in dist_nodes if name not in nvm_nodes]
3110 if additional_nodes is not None:
3111 dist_nodes.extend(additional_nodes)
3113 vm_nodes.extend(additional_nodes)
3114 if myself.name in dist_nodes:
3115 dist_nodes.remove(myself.name)
3116 if myself.name in vm_nodes:
3117 vm_nodes.remove(myself.name)
3119 # 2. Gather files to distribute
3120 dist_files = set([constants.ETC_HOSTS,
3121 constants.SSH_KNOWN_HOSTS_FILE,
3122 constants.RAPI_CERT_FILE,
3123 constants.RAPI_USERS_FILE,
3124 constants.CONFD_HMAC_KEY,
3125 constants.CLUSTER_DOMAIN_SECRET_FILE,
3129 enabled_hypervisors = lu.cfg.GetClusterInfo().enabled_hypervisors
3130 for hv_name in enabled_hypervisors:
3131 hv_class = hypervisor.GetHypervisor(hv_name)
3132 vm_files.update(hv_class.GetAncillaryFiles())
3134 # 3. Perform the files upload
3135 for fname in dist_files:
3136 _UploadHelper(lu, dist_nodes, fname)
3137 for fname in vm_files:
3138 _UploadHelper(lu, vm_nodes, fname)
3141 class LUClusterRedistConf(NoHooksLU):
3142 """Force the redistribution of cluster configuration.
3144 This is a very simple LU.
3149 def ExpandNames(self):
3150 self.needed_locks = {
3151 locking.LEVEL_NODE: locking.ALL_SET,
3153 self.share_locks[locking.LEVEL_NODE] = 1
3155 def Exec(self, feedback_fn):
3156 """Redistribute the configuration.
3159 self.cfg.Update(self.cfg.GetClusterInfo(), feedback_fn)
3160 _RedistributeAncillaryFiles(self)
3163 def _WaitForSync(lu, instance, disks=None, oneshot=False):
3164 """Sleep and poll for an instance's disk to sync.
3167 if not instance.disks or disks is not None and not disks:
3170 disks = _ExpandCheckDisks(instance, disks)
3173 lu.proc.LogInfo("Waiting for instance %s to sync disks." % instance.name)
3175 node = instance.primary_node
3178 lu.cfg.SetDiskID(dev, node)
3180 # TODO: Convert to utils.Retry
3183 degr_retries = 10 # in seconds, as we sleep 1 second each time
3187 cumul_degraded = False
3188 rstats = lu.rpc.call_blockdev_getmirrorstatus(node, disks)
3189 msg = rstats.fail_msg
3191 lu.LogWarning("Can't get any data from node %s: %s", node, msg)
3194 raise errors.RemoteError("Can't contact node %s for mirror data,"
3195 " aborting." % node)
3198 rstats = rstats.payload
3200 for i, mstat in enumerate(rstats):
3202 lu.LogWarning("Can't compute data for node %s/%s",
3203 node, disks[i].iv_name)
3206 cumul_degraded = (cumul_degraded or
3207 (mstat.is_degraded and mstat.sync_percent is None))
3208 if mstat.sync_percent is not None:
3210 if mstat.estimated_time is not None:
3211 rem_time = ("%s remaining (estimated)" %
3212 utils.FormatSeconds(mstat.estimated_time))
3213 max_time = mstat.estimated_time
3215 rem_time = "no time estimate"
3216 lu.proc.LogInfo("- device %s: %5.2f%% done, %s" %
3217 (disks[i].iv_name, mstat.sync_percent, rem_time))
3219 # if we're done but degraded, let's do a few small retries, to
3220 # make sure we see a stable and not transient situation; therefore
3221 # we force restart of the loop
3222 if (done or oneshot) and cumul_degraded and degr_retries > 0:
3223 logging.info("Degraded disks found, %d retries left", degr_retries)
3231 time.sleep(min(60, max_time))
3234 lu.proc.LogInfo("Instance %s's disks are in sync." % instance.name)
3235 return not cumul_degraded
3238 def _CheckDiskConsistency(lu, dev, node, on_primary, ldisk=False):
3239 """Check that mirrors are not degraded.
3241 The ldisk parameter, if True, will change the test from the
3242 is_degraded attribute (which represents overall non-ok status for
3243 the device(s)) to the ldisk (representing the local storage status).
3246 lu.cfg.SetDiskID(dev, node)
3250 if on_primary or dev.AssembleOnSecondary():
3251 rstats = lu.rpc.call_blockdev_find(node, dev)
3252 msg = rstats.fail_msg
3254 lu.LogWarning("Can't find disk on node %s: %s", node, msg)
3256 elif not rstats.payload:
3257 lu.LogWarning("Can't find disk on node %s", node)
3261 result = result and rstats.payload.ldisk_status == constants.LDS_OKAY
3263 result = result and not rstats.payload.is_degraded
3266 for child in dev.children:
3267 result = result and _CheckDiskConsistency(lu, child, node, on_primary)
3272 class LUOobCommand(NoHooksLU):
3273 """Logical unit for OOB handling.
3278 def CheckPrereq(self):
3279 """Check prerequisites.
3282 - the node exists in the configuration
3285 Any errors are signaled by raising errors.OpPrereqError.
3289 for node_name in self.op.node_names:
3290 node = self.cfg.GetNodeInfo(node_name)
3293 raise errors.OpPrereqError("Node %s not found" % node_name,
3296 self.nodes.append(node)
3298 if (self.op.command == constants.OOB_POWER_OFF and not node.offline):
3299 raise errors.OpPrereqError(("Cannot power off node %s because it is"
3300 " not marked offline") % node_name,
3303 def ExpandNames(self):
3304 """Gather locks we need.
3307 if self.op.node_names:
3308 self.op.node_names = [_ExpandNodeName(self.cfg, name)
3309 for name in self.op.node_names]
3311 self.op.node_names = self.cfg.GetNodeList()
3313 self.needed_locks = {
3314 locking.LEVEL_NODE: self.op.node_names,
3317 def Exec(self, feedback_fn):
3318 """Execute OOB and return result if we expect any.
3321 master_node = self.cfg.GetMasterNode()
3324 for node in self.nodes:
3325 node_entry = [(constants.RS_NORMAL, node.name)]
3326 ret.append(node_entry)
3328 oob_program = _SupportsOob(self.cfg, node)
3331 node_entry.append((constants.RS_UNAVAIL, None))
3334 logging.info("Executing out-of-band command '%s' using '%s' on %s",
3335 self.op.command, oob_program, node.name)
3336 result = self.rpc.call_run_oob(master_node, oob_program,
3337 self.op.command, node.name,
3341 self.LogWarning("On node '%s' out-of-band RPC failed with: %s",
3342 node.name, result.fail_msg)
3343 node_entry.append((constants.RS_NODATA, None))
3346 self._CheckPayload(result)
3347 except errors.OpExecError, err:
3348 self.LogWarning("The payload returned by '%s' is not valid: %s",
3350 node_entry.append((constants.RS_NODATA, None))
3352 if self.op.command == constants.OOB_HEALTH:
3353 # For health we should log important events
3354 for item, status in result.payload:
3355 if status in [constants.OOB_STATUS_WARNING,
3356 constants.OOB_STATUS_CRITICAL]:
3357 self.LogWarning("On node '%s' item '%s' has status '%s'",
3358 node.name, item, status)
3360 if self.op.command == constants.OOB_POWER_ON:
3362 elif self.op.command == constants.OOB_POWER_OFF:
3363 node.powered = False
3364 elif self.op.command == constants.OOB_POWER_STATUS:
3365 powered = result.payload[constants.OOB_POWER_STATUS_POWERED]
3366 if powered != node.powered:
3367 logging.warning(("Recorded power state (%s) of node '%s' does not"
3368 " match actual power state (%s)"), node.powered,
3371 # For configuration changing commands we should update the node
3372 if self.op.command in (constants.OOB_POWER_ON,
3373 constants.OOB_POWER_OFF):
3374 self.cfg.Update(node, feedback_fn)
3376 node_entry.append((constants.RS_NORMAL, result.payload))
3380 def _CheckPayload(self, result):
3381 """Checks if the payload is valid.
3383 @param result: RPC result
3384 @raises errors.OpExecError: If payload is not valid
3388 if self.op.command == constants.OOB_HEALTH:
3389 if not isinstance(result.payload, list):
3390 errs.append("command 'health' is expected to return a list but got %s" %
3391 type(result.payload))
3393 for item, status in result.payload:
3394 if status not in constants.OOB_STATUSES:
3395 errs.append("health item '%s' has invalid status '%s'" %
3398 if self.op.command == constants.OOB_POWER_STATUS:
3399 if not isinstance(result.payload, dict):
3400 errs.append("power-status is expected to return a dict but got %s" %
3401 type(result.payload))
3403 if self.op.command in [
3404 constants.OOB_POWER_ON,
3405 constants.OOB_POWER_OFF,
3406 constants.OOB_POWER_CYCLE,
3408 if result.payload is not None:
3409 errs.append("%s is expected to not return payload but got '%s'" %
3410 (self.op.command, result.payload))
3413 raise errors.OpExecError("Check of out-of-band payload failed due to %s" %
3414 utils.CommaJoin(errs))
3418 class LUOsDiagnose(NoHooksLU):
3419 """Logical unit for OS diagnose/query.
3424 _BLK = "blacklisted"
3426 _FIELDS_STATIC = utils.FieldSet()
3427 _FIELDS_DYNAMIC = utils.FieldSet("name", _VLD, "node_status", "variants",
3428 "parameters", "api_versions", _HID, _BLK)
3430 def CheckArguments(self):
3432 raise errors.OpPrereqError("Selective OS query not supported",
3435 _CheckOutputFields(static=self._FIELDS_STATIC,
3436 dynamic=self._FIELDS_DYNAMIC,
3437 selected=self.op.output_fields)
3439 def ExpandNames(self):
3440 # Lock all nodes, in shared mode
3441 # Temporary removal of locks, should be reverted later
3442 # TODO: reintroduce locks when they are lighter-weight
3443 self.needed_locks = {}
3444 #self.share_locks[locking.LEVEL_NODE] = 1
3445 #self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
3448 def _DiagnoseByOS(rlist):
3449 """Remaps a per-node return list into an a per-os per-node dictionary
3451 @param rlist: a map with node names as keys and OS objects as values
3454 @return: a dictionary with osnames as keys and as value another
3455 map, with nodes as keys and tuples of (path, status, diagnose,
3456 variants, parameters, api_versions) as values, eg::
3458 {"debian-etch": {"node1": [(/usr/lib/..., True, "", [], []),
3459 (/srv/..., False, "invalid api")],
3460 "node2": [(/srv/..., True, "", [], [])]}
3465 # we build here the list of nodes that didn't fail the RPC (at RPC
3466 # level), so that nodes with a non-responding node daemon don't
3467 # make all OSes invalid
3468 good_nodes = [node_name for node_name in rlist
3469 if not rlist[node_name].fail_msg]
3470 for node_name, nr in rlist.items():
3471 if nr.fail_msg or not nr.payload:
3473 for (name, path, status, diagnose, variants,
3474 params, api_versions) in nr.payload:
3475 if name not in all_os:
3476 # build a list of nodes for this os containing empty lists
3477 # for each node in node_list
3479 for nname in good_nodes:
3480 all_os[name][nname] = []
3481 # convert params from [name, help] to (name, help)
3482 params = [tuple(v) for v in params]
3483 all_os[name][node_name].append((path, status, diagnose,
3484 variants, params, api_versions))
3487 def Exec(self, feedback_fn):
3488 """Compute the list of OSes.
3491 valid_nodes = [node.name
3492 for node in self.cfg.GetAllNodesInfo().values()
3493 if not node.offline and node.vm_capable]
3494 node_data = self.rpc.call_os_diagnose(valid_nodes)
3495 pol = self._DiagnoseByOS(node_data)
3497 cluster = self.cfg.GetClusterInfo()
3499 for os_name in utils.NiceSort(pol.keys()):
3500 os_data = pol[os_name]
3503 (variants, params, api_versions) = null_state = (set(), set(), set())
3504 for idx, osl in enumerate(os_data.values()):
3505 valid = bool(valid and osl and osl[0][1])
3507 (variants, params, api_versions) = null_state
3509 node_variants, node_params, node_api = osl[0][3:6]
3510 if idx == 0: # first entry
3511 variants = set(node_variants)
3512 params = set(node_params)
3513 api_versions = set(node_api)
3514 else: # keep consistency
3515 variants.intersection_update(node_variants)
3516 params.intersection_update(node_params)
3517 api_versions.intersection_update(node_api)
3519 is_hid = os_name in cluster.hidden_os
3520 is_blk = os_name in cluster.blacklisted_os
3521 if ((self._HID not in self.op.output_fields and is_hid) or
3522 (self._BLK not in self.op.output_fields and is_blk) or
3523 (self._VLD not in self.op.output_fields and not valid)):
3526 for field in self.op.output_fields:
3529 elif field == self._VLD:
3531 elif field == "node_status":
3532 # this is just a copy of the dict
3534 for node_name, nos_list in os_data.items():
3535 val[node_name] = nos_list
3536 elif field == "variants":
3537 val = utils.NiceSort(list(variants))
3538 elif field == "parameters":
3540 elif field == "api_versions":
3541 val = list(api_versions)
3542 elif field == self._HID:
3544 elif field == self._BLK:
3547 raise errors.ParameterError(field)
3554 class LUNodeRemove(LogicalUnit):
3555 """Logical unit for removing a node.
3558 HPATH = "node-remove"
3559 HTYPE = constants.HTYPE_NODE
3561 def BuildHooksEnv(self):
3564 This doesn't run on the target node in the pre phase as a failed
3565 node would then be impossible to remove.
3569 "OP_TARGET": self.op.node_name,
3570 "NODE_NAME": self.op.node_name,
3572 all_nodes = self.cfg.GetNodeList()
3574 all_nodes.remove(self.op.node_name)
3576 logging.warning("Node %s which is about to be removed not found"
3577 " in the all nodes list", self.op.node_name)
3578 return env, all_nodes, all_nodes
3580 def CheckPrereq(self):
3581 """Check prerequisites.
3584 - the node exists in the configuration
3585 - it does not have primary or secondary instances
3586 - it's not the master
3588 Any errors are signaled by raising errors.OpPrereqError.
3591 self.op.node_name = _ExpandNodeName(self.cfg, self.op.node_name)
3592 node = self.cfg.GetNodeInfo(self.op.node_name)
3593 assert node is not None
3595 instance_list = self.cfg.GetInstanceList()
3597 masternode = self.cfg.GetMasterNode()
3598 if node.name == masternode:
3599 raise errors.OpPrereqError("Node is the master node,"
3600 " you need to failover first.",
3603 for instance_name in instance_list:
3604 instance = self.cfg.GetInstanceInfo(instance_name)
3605 if node.name in instance.all_nodes:
3606 raise errors.OpPrereqError("Instance %s is still running on the node,"
3607 " please remove first." % instance_name,
3609 self.op.node_name = node.name
3612 def Exec(self, feedback_fn):
3613 """Removes the node from the cluster.
3617 logging.info("Stopping the node daemon and removing configs from node %s",
3620 modify_ssh_setup = self.cfg.GetClusterInfo().modify_ssh_setup
3622 # Promote nodes to master candidate as needed
3623 _AdjustCandidatePool(self, exceptions=[node.name])
3624 self.context.RemoveNode(node.name)
3626 # Run post hooks on the node before it's removed
3627 hm = self.proc.hmclass(self.rpc.call_hooks_runner, self)
3629 hm.RunPhase(constants.HOOKS_PHASE_POST, [node.name])
3631 # pylint: disable-msg=W0702
3632 self.LogWarning("Errors occurred running hooks on %s" % node.name)
3634 result = self.rpc.call_node_leave_cluster(node.name, modify_ssh_setup)
3635 msg = result.fail_msg
3637 self.LogWarning("Errors encountered on the remote node while leaving"
3638 " the cluster: %s", msg)
3640 # Remove node from our /etc/hosts
3641 if self.cfg.GetClusterInfo().modify_etc_hosts:
3642 master_node = self.cfg.GetMasterNode()
3643 result = self.rpc.call_etc_hosts_modify(master_node,
3644 constants.ETC_HOSTS_REMOVE,
3646 result.Raise("Can't update hosts file with new host data")
3647 _RedistributeAncillaryFiles(self)
3650 class _NodeQuery(_QueryBase):
3651 FIELDS = query.NODE_FIELDS
3653 def ExpandNames(self, lu):
3654 lu.needed_locks = {}
3655 lu.share_locks[locking.LEVEL_NODE] = 1
3658 self.wanted = _GetWantedNodes(lu, self.names)
3660 self.wanted = locking.ALL_SET
3662 self.do_locking = (self.use_locking and
3663 query.NQ_LIVE in self.requested_data)
3666 # if we don't request only static fields, we need to lock the nodes
3667 lu.needed_locks[locking.LEVEL_NODE] = self.wanted
3669 def DeclareLocks(self, lu, level):
3672 def _GetQueryData(self, lu):
3673 """Computes the list of nodes and their attributes.
3676 all_info = lu.cfg.GetAllNodesInfo()
3678 nodenames = self._GetNames(lu, all_info.keys(), locking.LEVEL_NODE)
3680 # Gather data as requested
3681 if query.NQ_LIVE in self.requested_data:
3682 # filter out non-vm_capable nodes
3683 toquery_nodes = [name for name in nodenames if all_info[name].vm_capable]
3685 node_data = lu.rpc.call_node_info(toquery_nodes, lu.cfg.GetVGName(),
3686 lu.cfg.GetHypervisorType())
3687 live_data = dict((name, nresult.payload)
3688 for (name, nresult) in node_data.items()
3689 if not nresult.fail_msg and nresult.payload)
3693 if query.NQ_INST in self.requested_data:
3694 node_to_primary = dict([(name, set()) for name in nodenames])
3695 node_to_secondary = dict([(name, set()) for name in nodenames])
3697 inst_data = lu.cfg.GetAllInstancesInfo()
3699 for inst in inst_data.values():
3700 if inst.primary_node in node_to_primary:
3701 node_to_primary[inst.primary_node].add(inst.name)
3702 for secnode in inst.secondary_nodes:
3703 if secnode in node_to_secondary:
3704 node_to_secondary[secnode].add(inst.name)
3706 node_to_primary = None
3707 node_to_secondary = None
3709 if query.NQ_OOB in self.requested_data:
3710 oob_support = dict((name, bool(_SupportsOob(lu.cfg, node)))
3711 for name, node in all_info.iteritems())
3715 if query.NQ_GROUP in self.requested_data:
3716 groups = lu.cfg.GetAllNodeGroupsInfo()
3720 return query.NodeQueryData([all_info[name] for name in nodenames],
3721 live_data, lu.cfg.GetMasterNode(),
3722 node_to_primary, node_to_secondary, groups,
3723 oob_support, lu.cfg.GetClusterInfo())
3726 class LUNodeQuery(NoHooksLU):
3727 """Logical unit for querying nodes.
3730 # pylint: disable-msg=W0142
3733 def CheckArguments(self):
3734 self.nq = _NodeQuery(self.op.names, self.op.output_fields,
3735 self.op.use_locking)
3737 def ExpandNames(self):
3738 self.nq.ExpandNames(self)
3740 def Exec(self, feedback_fn):
3741 return self.nq.OldStyleQuery(self)
3744 class LUNodeQueryvols(NoHooksLU):
3745 """Logical unit for getting volumes on node(s).
3749 _FIELDS_DYNAMIC = utils.FieldSet("phys", "vg", "name", "size", "instance")
3750 _FIELDS_STATIC = utils.FieldSet("node")
3752 def CheckArguments(self):
3753 _CheckOutputFields(static=self._FIELDS_STATIC,
3754 dynamic=self._FIELDS_DYNAMIC,
3755 selected=self.op.output_fields)
3757 def ExpandNames(self):
3758 self.needed_locks = {}
3759 self.share_locks[locking.LEVEL_NODE] = 1
3760 if not self.op.nodes:
3761 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
3763 self.needed_locks[locking.LEVEL_NODE] = \
3764 _GetWantedNodes(self, self.op.nodes)
3766 def Exec(self, feedback_fn):
3767 """Computes the list of nodes and their attributes.
3770 nodenames = self.acquired_locks[locking.LEVEL_NODE]
3771 volumes = self.rpc.call_node_volumes(nodenames)
3773 ilist = [self.cfg.GetInstanceInfo(iname) for iname
3774 in self.cfg.GetInstanceList()]
3776 lv_by_node = dict([(inst, inst.MapLVsByNode()) for inst in ilist])
3779 for node in nodenames:
3780 nresult = volumes[node]
3783 msg = nresult.fail_msg
3785 self.LogWarning("Can't compute volume data on node %s: %s", node, msg)
3788 node_vols = nresult.payload[:]
3789 node_vols.sort(key=lambda vol: vol['dev'])
3791 for vol in node_vols:
3793 for field in self.op.output_fields:
3796 elif field == "phys":
3800 elif field == "name":
3802 elif field == "size":
3803 val = int(float(vol['size']))
3804 elif field == "instance":
3806 if node not in lv_by_node[inst]:
3808 if vol['name'] in lv_by_node[inst][node]:
3814 raise errors.ParameterError(field)
3815 node_output.append(str(val))
3817 output.append(node_output)
3822 class LUNodeQueryStorage(NoHooksLU):
3823 """Logical unit for getting information on storage units on node(s).
3826 _FIELDS_STATIC = utils.FieldSet(constants.SF_NODE)
3829 def CheckArguments(self):
3830 _CheckOutputFields(static=self._FIELDS_STATIC,
3831 dynamic=utils.FieldSet(*constants.VALID_STORAGE_FIELDS),
3832 selected=self.op.output_fields)
3834 def ExpandNames(self):
3835 self.needed_locks = {}
3836 self.share_locks[locking.LEVEL_NODE] = 1
3839 self.needed_locks[locking.LEVEL_NODE] = \
3840 _GetWantedNodes(self, self.op.nodes)
3842 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
3844 def Exec(self, feedback_fn):
3845 """Computes the list of nodes and their attributes.
3848 self.nodes = self.acquired_locks[locking.LEVEL_NODE]
3850 # Always get name to sort by
3851 if constants.SF_NAME in self.op.output_fields:
3852 fields = self.op.output_fields[:]
3854 fields = [constants.SF_NAME] + self.op.output_fields
3856 # Never ask for node or type as it's only known to the LU
3857 for extra in [constants.SF_NODE, constants.SF_TYPE]:
3858 while extra in fields:
3859 fields.remove(extra)
3861 field_idx = dict([(name, idx) for (idx, name) in enumerate(fields)])
3862 name_idx = field_idx[constants.SF_NAME]
3864 st_args = _GetStorageTypeArgs(self.cfg, self.op.storage_type)
3865 data = self.rpc.call_storage_list(self.nodes,
3866 self.op.storage_type, st_args,
3867 self.op.name, fields)
3871 for node in utils.NiceSort(self.nodes):
3872 nresult = data[node]
3876 msg = nresult.fail_msg
3878 self.LogWarning("Can't get storage data from node %s: %s", node, msg)
3881 rows = dict([(row[name_idx], row) for row in nresult.payload])
3883 for name in utils.NiceSort(rows.keys()):
3888 for field in self.op.output_fields:
3889 if field == constants.SF_NODE:
3891 elif field == constants.SF_TYPE:
3892 val = self.op.storage_type
3893 elif field in field_idx:
3894 val = row[field_idx[field]]
3896 raise errors.ParameterError(field)
3905 class _InstanceQuery(_QueryBase):
3906 FIELDS = query.INSTANCE_FIELDS
3908 def ExpandNames(self, lu):
3909 lu.needed_locks = {}
3910 lu.share_locks[locking.LEVEL_INSTANCE] = 1
3911 lu.share_locks[locking.LEVEL_NODE] = 1
3914 self.wanted = _GetWantedInstances(lu, self.names)
3916 self.wanted = locking.ALL_SET
3918 self.do_locking = (self.use_locking and
3919 query.IQ_LIVE in self.requested_data)
3921 lu.needed_locks[locking.LEVEL_INSTANCE] = self.wanted
3922 lu.needed_locks[locking.LEVEL_NODE] = []
3923 lu.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3925 def DeclareLocks(self, lu, level):
3926 if level == locking.LEVEL_NODE and self.do_locking:
3927 lu._LockInstancesNodes() # pylint: disable-msg=W0212
3929 def _GetQueryData(self, lu):
3930 """Computes the list of instances and their attributes.
3933 cluster = lu.cfg.GetClusterInfo()
3934 all_info = lu.cfg.GetAllInstancesInfo()
3936 instance_names = self._GetNames(lu, all_info.keys(), locking.LEVEL_INSTANCE)
3938 instance_list = [all_info[name] for name in instance_names]
3939 nodes = frozenset(itertools.chain(*(inst.all_nodes
3940 for inst in instance_list)))
3941 hv_list = list(set([inst.hypervisor for inst in instance_list]))
3944 wrongnode_inst = set()
3946 # Gather data as requested
3947 if self.requested_data & set([query.IQ_LIVE, query.IQ_CONSOLE]):
3949 node_data = lu.rpc.call_all_instances_info(nodes, hv_list)
3951 result = node_data[name]
3953 # offline nodes will be in both lists
3954 assert result.fail_msg
3955 offline_nodes.append(name)
3957 bad_nodes.append(name)
3958 elif result.payload:
3959 for inst in result.payload:
3960 if inst in all_info:
3961 if all_info[inst].primary_node == name:
3962 live_data.update(result.payload)
3964 wrongnode_inst.add(inst)
3966 # orphan instance; we don't list it here as we don't
3967 # handle this case yet in the output of instance listing
3968 logging.warning("Orphan instance '%s' found on node %s",
3970 # else no instance is alive
3974 if query.IQ_DISKUSAGE in self.requested_data:
3975 disk_usage = dict((inst.name,
3976 _ComputeDiskSize(inst.disk_template,
3977 [{"size": disk.size}
3978 for disk in inst.disks]))
3979 for inst in instance_list)
3983 if query.IQ_CONSOLE in self.requested_data:
3985 for inst in instance_list:
3986 if inst.name in live_data:
3987 # Instance is running
3988 consinfo[inst.name] = _GetInstanceConsole(cluster, inst)
3990 consinfo[inst.name] = None
3991 assert set(consinfo.keys()) == set(instance_names)
3995 return query.InstanceQueryData(instance_list, lu.cfg.GetClusterInfo(),
3996 disk_usage, offline_nodes, bad_nodes,
3997 live_data, wrongnode_inst, consinfo)
4000 class LUQuery(NoHooksLU):
4001 """Query for resources/items of a certain kind.
4004 # pylint: disable-msg=W0142
4007 def CheckArguments(self):
4008 qcls = _GetQueryImplementation(self.op.what)
4009 names = qlang.ReadSimpleFilter("name", self.op.filter)
4011 self.impl = qcls(names, self.op.fields, False)
4013 def ExpandNames(self):
4014 self.impl.ExpandNames(self)
4016 def DeclareLocks(self, level):
4017 self.impl.DeclareLocks(self, level)
4019 def Exec(self, feedback_fn):
4020 return self.impl.NewStyleQuery(self)
4023 class LUQueryFields(NoHooksLU):
4024 """Query for resources/items of a certain kind.
4027 # pylint: disable-msg=W0142
4030 def CheckArguments(self):
4031 self.qcls = _GetQueryImplementation(self.op.what)
4033 def ExpandNames(self):
4034 self.needed_locks = {}
4036 def Exec(self, feedback_fn):
4037 return self.qcls.FieldsQuery(self.op.fields)
4040 class LUNodeModifyStorage(NoHooksLU):
4041 """Logical unit for modifying a storage volume on a node.
4046 def CheckArguments(self):
4047 self.op.node_name = _ExpandNodeName(self.cfg, self.op.node_name)
4049 storage_type = self.op.storage_type
4052 modifiable = constants.MODIFIABLE_STORAGE_FIELDS[storage_type]
4054 raise errors.OpPrereqError("Storage units of type '%s' can not be"
4055 " modified" % storage_type,
4058 diff = set(self.op.changes.keys()) - modifiable
4060 raise errors.OpPrereqError("The following fields can not be modified for"
4061 " storage units of type '%s': %r" %
4062 (storage_type, list(diff)),
4065 def ExpandNames(self):
4066 self.needed_locks = {
4067 locking.LEVEL_NODE: self.op.node_name,
4070 def Exec(self, feedback_fn):
4071 """Computes the list of nodes and their attributes.
4074 st_args = _GetStorageTypeArgs(self.cfg, self.op.storage_type)
4075 result = self.rpc.call_storage_modify(self.op.node_name,
4076 self.op.storage_type, st_args,
4077 self.op.name, self.op.changes)
4078 result.Raise("Failed to modify storage unit '%s' on %s" %
4079 (self.op.name, self.op.node_name))
4082 class LUNodeAdd(LogicalUnit):
4083 """Logical unit for adding node to the cluster.
4087 HTYPE = constants.HTYPE_NODE
4088 _NFLAGS = ["master_capable", "vm_capable"]
4090 def CheckArguments(self):
4091 self.primary_ip_family = self.cfg.GetPrimaryIPFamily()
4092 # validate/normalize the node name
4093 self.hostname = netutils.GetHostname(name=self.op.node_name,
4094 family=self.primary_ip_family)
4095 self.op.node_name = self.hostname.name
4097 if self.op.readd and self.op.node_name == self.cfg.GetMasterNode():
4098 raise errors.OpPrereqError("Cannot readd the master node",
4101 if self.op.readd and self.op.group:
4102 raise errors.OpPrereqError("Cannot pass a node group when a node is"
4103 " being readded", errors.ECODE_INVAL)
4105 def BuildHooksEnv(self):
4108 This will run on all nodes before, and on all nodes + the new node after.
4112 "OP_TARGET": self.op.node_name,
4113 "NODE_NAME": self.op.node_name,
4114 "NODE_PIP": self.op.primary_ip,
4115 "NODE_SIP": self.op.secondary_ip,
4116 "MASTER_CAPABLE": str(self.op.master_capable),
4117 "VM_CAPABLE": str(self.op.vm_capable),
4119 nodes_0 = self.cfg.GetNodeList()
4120 nodes_1 = nodes_0 + [self.op.node_name, ]
4121 return env, nodes_0, nodes_1
4123 def CheckPrereq(self):
4124 """Check prerequisites.
4127 - the new node is not already in the config
4129 - its parameters (single/dual homed) matches the cluster
4131 Any errors are signaled by raising errors.OpPrereqError.
4135 hostname = self.hostname
4136 node = hostname.name
4137 primary_ip = self.op.primary_ip = hostname.ip
4138 if self.op.secondary_ip is None:
4139 if self.primary_ip_family == netutils.IP6Address.family:
4140 raise errors.OpPrereqError("When using a IPv6 primary address, a valid"
4141 " IPv4 address must be given as secondary",
4143 self.op.secondary_ip = primary_ip
4145 secondary_ip = self.op.secondary_ip
4146 if not netutils.IP4Address.IsValid(secondary_ip):
4147 raise errors.OpPrereqError("Secondary IP (%s) needs to be a valid IPv4"
4148 " address" % secondary_ip, errors.ECODE_INVAL)
4150 node_list = cfg.GetNodeList()
4151 if not self.op.readd and node in node_list:
4152 raise errors.OpPrereqError("Node %s is already in the configuration" %
4153 node, errors.ECODE_EXISTS)
4154 elif self.op.readd and node not in node_list:
4155 raise errors.OpPrereqError("Node %s is not in the configuration" % node,
4158 self.changed_primary_ip = False
4160 for existing_node_name in node_list:
4161 existing_node = cfg.GetNodeInfo(existing_node_name)
4163 if self.op.readd and node == existing_node_name:
4164 if existing_node.secondary_ip != secondary_ip:
4165 raise errors.OpPrereqError("Readded node doesn't have the same IP"
4166 " address configuration as before",
4168 if existing_node.primary_ip != primary_ip:
4169 self.changed_primary_ip = True
4173 if (existing_node.primary_ip == primary_ip or
4174 existing_node.secondary_ip == primary_ip or
4175 existing_node.primary_ip == secondary_ip or
4176 existing_node.secondary_ip == secondary_ip):
4177 raise errors.OpPrereqError("New node ip address(es) conflict with"
4178 " existing node %s" % existing_node.name,
4179 errors.ECODE_NOTUNIQUE)
4181 # After this 'if' block, None is no longer a valid value for the
4182 # _capable op attributes
4184 old_node = self.cfg.GetNodeInfo(node)
4185 assert old_node is not None, "Can't retrieve locked node %s" % node
4186 for attr in self._NFLAGS:
4187 if getattr(self.op, attr) is None:
4188 setattr(self.op, attr, getattr(old_node, attr))
4190 for attr in self._NFLAGS:
4191 if getattr(self.op, attr) is None:
4192 setattr(self.op, attr, True)
4194 if self.op.readd and not self.op.vm_capable:
4195 pri, sec = cfg.GetNodeInstances(node)
4197 raise errors.OpPrereqError("Node %s being re-added with vm_capable"
4198 " flag set to false, but it already holds"
4199 " instances" % node,
4202 # check that the type of the node (single versus dual homed) is the
4203 # same as for the master
4204 myself = cfg.GetNodeInfo(self.cfg.GetMasterNode())
4205 master_singlehomed = myself.secondary_ip == myself.primary_ip
4206 newbie_singlehomed = secondary_ip == primary_ip
4207 if master_singlehomed != newbie_singlehomed:
4208 if master_singlehomed:
4209 raise errors.OpPrereqError("The master has no secondary ip but the"
4210 " new node has one",
4213 raise errors.OpPrereqError("The master has a secondary ip but the"
4214 " new node doesn't have one",
4217 # checks reachability
4218 if not netutils.TcpPing(primary_ip, constants.DEFAULT_NODED_PORT):
4219 raise errors.OpPrereqError("Node not reachable by ping",
4220 errors.ECODE_ENVIRON)
4222 if not newbie_singlehomed:
4223 # check reachability from my secondary ip to newbie's secondary ip
4224 if not netutils.TcpPing(secondary_ip, constants.DEFAULT_NODED_PORT,
4225 source=myself.secondary_ip):
4226 raise errors.OpPrereqError("Node secondary ip not reachable by TCP"
4227 " based ping to node daemon port",
4228 errors.ECODE_ENVIRON)
4235 if self.op.master_capable:
4236 self.master_candidate = _DecideSelfPromotion(self, exceptions=exceptions)
4238 self.master_candidate = False
4241 self.new_node = old_node
4243 node_group = cfg.LookupNodeGroup(self.op.group)
4244 self.new_node = objects.Node(name=node,
4245 primary_ip=primary_ip,
4246 secondary_ip=secondary_ip,
4247 master_candidate=self.master_candidate,
4248 offline=False, drained=False,
4251 if self.op.ndparams:
4252 utils.ForceDictType(self.op.ndparams, constants.NDS_PARAMETER_TYPES)
4254 def Exec(self, feedback_fn):
4255 """Adds the new node to the cluster.
4258 new_node = self.new_node
4259 node = new_node.name
4261 # We adding a new node so we assume it's powered
4262 new_node.powered = True
4264 # for re-adds, reset the offline/drained/master-candidate flags;
4265 # we need to reset here, otherwise offline would prevent RPC calls
4266 # later in the procedure; this also means that if the re-add
4267 # fails, we are left with a non-offlined, broken node
4269 new_node.drained = new_node.offline = False # pylint: disable-msg=W0201
4270 self.LogInfo("Readding a node, the offline/drained flags were reset")
4271 # if we demote the node, we do cleanup later in the procedure
4272 new_node.master_candidate = self.master_candidate
4273 if self.changed_primary_ip:
4274 new_node.primary_ip = self.op.primary_ip
4276 # copy the master/vm_capable flags
4277 for attr in self._NFLAGS:
4278 setattr(new_node, attr, getattr(self.op, attr))
4280 # notify the user about any possible mc promotion
4281 if new_node.master_candidate:
4282 self.LogInfo("Node will be a master candidate")
4284 if self.op.ndparams:
4285 new_node.ndparams = self.op.ndparams
4287 new_node.ndparams = {}
4289 # check connectivity
4290 result = self.rpc.call_version([node])[node]
4291 result.Raise("Can't get version information from node %s" % node)
4292 if constants.PROTOCOL_VERSION == result.payload:
4293 logging.info("Communication to node %s fine, sw version %s match",
4294 node, result.payload)
4296 raise errors.OpExecError("Version mismatch master version %s,"
4297 " node version %s" %
4298 (constants.PROTOCOL_VERSION, result.payload))
4300 # Add node to our /etc/hosts, and add key to known_hosts
4301 if self.cfg.GetClusterInfo().modify_etc_hosts:
4302 master_node = self.cfg.GetMasterNode()
4303 result = self.rpc.call_etc_hosts_modify(master_node,
4304 constants.ETC_HOSTS_ADD,
4307 result.Raise("Can't update hosts file with new host data")
4309 if new_node.secondary_ip != new_node.primary_ip:
4310 _CheckNodeHasSecondaryIP(self, new_node.name, new_node.secondary_ip,
4313 node_verify_list = [self.cfg.GetMasterNode()]
4314 node_verify_param = {
4315 constants.NV_NODELIST: [node],
4316 # TODO: do a node-net-test as well?
4319 result = self.rpc.call_node_verify(node_verify_list, node_verify_param,
4320 self.cfg.GetClusterName())
4321 for verifier in node_verify_list:
4322 result[verifier].Raise("Cannot communicate with node %s" % verifier)
4323 nl_payload = result[verifier].payload[constants.NV_NODELIST]
4325 for failed in nl_payload:
4326 feedback_fn("ssh/hostname verification failed"
4327 " (checking from %s): %s" %
4328 (verifier, nl_payload[failed]))
4329 raise errors.OpExecError("ssh/hostname verification failed")
4332 _RedistributeAncillaryFiles(self)
4333 self.context.ReaddNode(new_node)
4334 # make sure we redistribute the config
4335 self.cfg.Update(new_node, feedback_fn)
4336 # and make sure the new node will not have old files around
4337 if not new_node.master_candidate:
4338 result = self.rpc.call_node_demote_from_mc(new_node.name)
4339 msg = result.fail_msg
4341 self.LogWarning("Node failed to demote itself from master"
4342 " candidate status: %s" % msg)
4344 _RedistributeAncillaryFiles(self, additional_nodes=[node],
4345 additional_vm=self.op.vm_capable)
4346 self.context.AddNode(new_node, self.proc.GetECId())
4349 class LUNodeSetParams(LogicalUnit):
4350 """Modifies the parameters of a node.
4352 @cvar _F2R: a dictionary from tuples of flags (mc, drained, offline)
4353 to the node role (as _ROLE_*)
4354 @cvar _R2F: a dictionary from node role to tuples of flags
4355 @cvar _FLAGS: a list of attribute names corresponding to the flags
4358 HPATH = "node-modify"
4359 HTYPE = constants.HTYPE_NODE
4361 (_ROLE_CANDIDATE, _ROLE_DRAINED, _ROLE_OFFLINE, _ROLE_REGULAR) = range(4)
4363 (True, False, False): _ROLE_CANDIDATE,
4364 (False, True, False): _ROLE_DRAINED,
4365 (False, False, True): _ROLE_OFFLINE,
4366 (False, False, False): _ROLE_REGULAR,
4368 _R2F = dict((v, k) for k, v in _F2R.items())
4369 _FLAGS = ["master_candidate", "drained", "offline"]
4371 def CheckArguments(self):
4372 self.op.node_name = _ExpandNodeName(self.cfg, self.op.node_name)
4373 all_mods = [self.op.offline, self.op.master_candidate, self.op.drained,
4374 self.op.master_capable, self.op.vm_capable,
4375 self.op.secondary_ip, self.op.ndparams]
4376 if all_mods.count(None) == len(all_mods):
4377 raise errors.OpPrereqError("Please pass at least one modification",
4379 if all_mods.count(True) > 1:
4380 raise errors.OpPrereqError("Can't set the node into more than one"
4381 " state at the same time",
4384 # Boolean value that tells us whether we might be demoting from MC
4385 self.might_demote = (self.op.master_candidate == False or
4386 self.op.offline == True or
4387 self.op.drained == True or
4388 self.op.master_capable == False)
4390 if self.op.secondary_ip:
4391 if not netutils.IP4Address.IsValid(self.op.secondary_ip):
4392 raise errors.OpPrereqError("Secondary IP (%s) needs to be a valid IPv4"
4393 " address" % self.op.secondary_ip,
4396 self.lock_all = self.op.auto_promote and self.might_demote
4397 self.lock_instances = self.op.secondary_ip is not None
4399 def ExpandNames(self):
4401 self.needed_locks = {locking.LEVEL_NODE: locking.ALL_SET}
4403 self.needed_locks = {locking.LEVEL_NODE: self.op.node_name}
4405 if self.lock_instances:
4406 self.needed_locks[locking.LEVEL_INSTANCE] = locking.ALL_SET
4408 def DeclareLocks(self, level):
4409 # If we have locked all instances, before waiting to lock nodes, release
4410 # all the ones living on nodes unrelated to the current operation.
4411 if level == locking.LEVEL_NODE and self.lock_instances:
4412 instances_release = []
4414 self.affected_instances = []
4415 if self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET:
4416 for instance_name in self.acquired_locks[locking.LEVEL_INSTANCE]:
4417 instance = self.context.cfg.GetInstanceInfo(instance_name)
4418 i_mirrored = instance.disk_template in constants.DTS_NET_MIRROR
4419 if i_mirrored and self.op.node_name in instance.all_nodes:
4420 instances_keep.append(instance_name)
4421 self.affected_instances.append(instance)
4423 instances_release.append(instance_name)
4424 if instances_release:
4425 self.context.glm.release(locking.LEVEL_INSTANCE, instances_release)
4426 self.acquired_locks[locking.LEVEL_INSTANCE] = instances_keep
4428 def BuildHooksEnv(self):
4431 This runs on the master node.
4435 "OP_TARGET": self.op.node_name,
4436 "MASTER_CANDIDATE": str(self.op.master_candidate),
4437 "OFFLINE": str(self.op.offline),
4438 "DRAINED": str(self.op.drained),
4439 "MASTER_CAPABLE": str(self.op.master_capable),
4440 "VM_CAPABLE": str(self.op.vm_capable),
4442 nl = [self.cfg.GetMasterNode(),
4446 def CheckPrereq(self):
4447 """Check prerequisites.
4449 This only checks the instance list against the existing names.
4452 node = self.node = self.cfg.GetNodeInfo(self.op.node_name)
4454 if (self.op.master_candidate is not None or
4455 self.op.drained is not None or
4456 self.op.offline is not None):
4457 # we can't change the master's node flags
4458 if self.op.node_name == self.cfg.GetMasterNode():
4459 raise errors.OpPrereqError("The master role can be changed"
4460 " only via master-failover",
4463 if self.op.master_candidate and not node.master_capable:
4464 raise errors.OpPrereqError("Node %s is not master capable, cannot make"
4465 " it a master candidate" % node.name,
4468 if self.op.vm_capable == False:
4469 (ipri, isec) = self.cfg.GetNodeInstances(self.op.node_name)
4471 raise errors.OpPrereqError("Node %s hosts instances, cannot unset"
4472 " the vm_capable flag" % node.name,
4475 if node.master_candidate and self.might_demote and not self.lock_all:
4476 assert not self.op.auto_promote, "auto_promote set but lock_all not"
4477 # check if after removing the current node, we're missing master
4479 (mc_remaining, mc_should, _) = \
4480 self.cfg.GetMasterCandidateStats(exceptions=[node.name])
4481 if mc_remaining < mc_should:
4482 raise errors.OpPrereqError("Not enough master candidates, please"
4483 " pass auto promote option to allow"
4484 " promotion", errors.ECODE_STATE)
4486 self.old_flags = old_flags = (node.master_candidate,
4487 node.drained, node.offline)
4488 assert old_flags in self._F2R, "Un-handled old flags %s" % str(old_flags)
4489 self.old_role = old_role = self._F2R[old_flags]
4491 # Check for ineffective changes
4492 for attr in self._FLAGS:
4493 if (getattr(self.op, attr) == False and getattr(node, attr) == False):
4494 self.LogInfo("Ignoring request to unset flag %s, already unset", attr)
4495 setattr(self.op, attr, None)
4497 # Past this point, any flag change to False means a transition
4498 # away from the respective state, as only real changes are kept
4500 # TODO: We might query the real power state if it supports OOB
4501 if _SupportsOob(self.cfg, node):
4502 if self.op.offline is False and not (node.powered or
4503 self.op.powered == True):
4504 raise errors.OpPrereqError(("Please power on node %s first before you"
4505 " can reset offline state") %
4507 elif self.op.powered is not None:
4508 raise errors.OpPrereqError(("Unable to change powered state for node %s"
4509 " which does not support out-of-band"
4510 " handling") % self.op.node_name)
4512 # If we're being deofflined/drained, we'll MC ourself if needed
4513 if (self.op.drained == False or self.op.offline == False or
4514 (self.op.master_capable and not node.master_capable)):
4515 if _DecideSelfPromotion(self):
4516 self.op.master_candidate = True
4517 self.LogInfo("Auto-promoting node to master candidate")
4519 # If we're no longer master capable, we'll demote ourselves from MC
4520 if self.op.master_capable == False and node.master_candidate:
4521 self.LogInfo("Demoting from master candidate")
4522 self.op.master_candidate = False
4525 assert [getattr(self.op, attr) for attr in self._FLAGS].count(True) <= 1
4526 if self.op.master_candidate:
4527 new_role = self._ROLE_CANDIDATE
4528 elif self.op.drained:
4529 new_role = self._ROLE_DRAINED
4530 elif self.op.offline:
4531 new_role = self._ROLE_OFFLINE
4532 elif False in [self.op.master_candidate, self.op.drained, self.op.offline]:
4533 # False is still in new flags, which means we're un-setting (the
4535 new_role = self._ROLE_REGULAR
4536 else: # no new flags, nothing, keep old role
4539 self.new_role = new_role
4541 if old_role == self._ROLE_OFFLINE and new_role != old_role:
4542 # Trying to transition out of offline status
4543 result = self.rpc.call_version([node.name])[node.name]
4545 raise errors.OpPrereqError("Node %s is being de-offlined but fails"
4546 " to report its version: %s" %
4547 (node.name, result.fail_msg),
4550 self.LogWarning("Transitioning node from offline to online state"
4551 " without using re-add. Please make sure the node"
4554 if self.op.secondary_ip:
4555 # Ok even without locking, because this can't be changed by any LU
4556 master = self.cfg.GetNodeInfo(self.cfg.GetMasterNode())
4557 master_singlehomed = master.secondary_ip == master.primary_ip
4558 if master_singlehomed and self.op.secondary_ip:
4559 raise errors.OpPrereqError("Cannot change the secondary ip on a single"
4560 " homed cluster", errors.ECODE_INVAL)
4563 if self.affected_instances:
4564 raise errors.OpPrereqError("Cannot change secondary ip: offline"
4565 " node has instances (%s) configured"
4566 " to use it" % self.affected_instances)
4568 # On online nodes, check that no instances are running, and that
4569 # the node has the new ip and we can reach it.
4570 for instance in self.affected_instances:
4571 _CheckInstanceDown(self, instance, "cannot change secondary ip")
4573 _CheckNodeHasSecondaryIP(self, node.name, self.op.secondary_ip, True)
4574 if master.name != node.name:
4575 # check reachability from master secondary ip to new secondary ip
4576 if not netutils.TcpPing(self.op.secondary_ip,
4577 constants.DEFAULT_NODED_PORT,
4578 source=master.secondary_ip):
4579 raise errors.OpPrereqError("Node secondary ip not reachable by TCP"
4580 " based ping to node daemon port",
4581 errors.ECODE_ENVIRON)
4583 if self.op.ndparams:
4584 new_ndparams = _GetUpdatedParams(self.node.ndparams, self.op.ndparams)
4585 utils.ForceDictType(new_ndparams, constants.NDS_PARAMETER_TYPES)
4586 self.new_ndparams = new_ndparams
4588 def Exec(self, feedback_fn):
4593 old_role = self.old_role
4594 new_role = self.new_role
4598 if self.op.ndparams:
4599 node.ndparams = self.new_ndparams
4601 if self.op.powered is not None:
4602 node.powered = self.op.powered
4604 for attr in ["master_capable", "vm_capable"]:
4605 val = getattr(self.op, attr)
4607 setattr(node, attr, val)
4608 result.append((attr, str(val)))
4610 if new_role != old_role:
4611 # Tell the node to demote itself, if no longer MC and not offline
4612 if old_role == self._ROLE_CANDIDATE and new_role != self._ROLE_OFFLINE:
4613 msg = self.rpc.call_node_demote_from_mc(node.name).fail_msg
4615 self.LogWarning("Node failed to demote itself: %s", msg)
4617 new_flags = self._R2F[new_role]
4618 for of, nf, desc in zip(self.old_flags, new_flags, self._FLAGS):
4620 result.append((desc, str(nf)))
4621 (node.master_candidate, node.drained, node.offline) = new_flags
4623 # we locked all nodes, we adjust the CP before updating this node
4625 _AdjustCandidatePool(self, [node.name])
4627 if self.op.secondary_ip:
4628 node.secondary_ip = self.op.secondary_ip
4629 result.append(("secondary_ip", self.op.secondary_ip))
4631 # this will trigger configuration file update, if needed
4632 self.cfg.Update(node, feedback_fn)
4634 # this will trigger job queue propagation or cleanup if the mc
4636 if [old_role, new_role].count(self._ROLE_CANDIDATE) == 1:
4637 self.context.ReaddNode(node)
4642 class LUNodePowercycle(NoHooksLU):
4643 """Powercycles a node.
4648 def CheckArguments(self):
4649 self.op.node_name = _ExpandNodeName(self.cfg, self.op.node_name)
4650 if self.op.node_name == self.cfg.GetMasterNode() and not self.op.force:
4651 raise errors.OpPrereqError("The node is the master and the force"
4652 " parameter was not set",
4655 def ExpandNames(self):
4656 """Locking for PowercycleNode.
4658 This is a last-resort option and shouldn't block on other
4659 jobs. Therefore, we grab no locks.
4662 self.needed_locks = {}
4664 def Exec(self, feedback_fn):
4668 result = self.rpc.call_node_powercycle(self.op.node_name,
4669 self.cfg.GetHypervisorType())
4670 result.Raise("Failed to schedule the reboot")
4671 return result.payload
4674 class LUClusterQuery(NoHooksLU):
4675 """Query cluster configuration.
4680 def ExpandNames(self):
4681 self.needed_locks = {}
4683 def Exec(self, feedback_fn):
4684 """Return cluster config.
4687 cluster = self.cfg.GetClusterInfo()
4690 # Filter just for enabled hypervisors
4691 for os_name, hv_dict in cluster.os_hvp.items():
4692 os_hvp[os_name] = {}
4693 for hv_name, hv_params in hv_dict.items():
4694 if hv_name in cluster.enabled_hypervisors:
4695 os_hvp[os_name][hv_name] = hv_params
4697 # Convert ip_family to ip_version
4698 primary_ip_version = constants.IP4_VERSION
4699 if cluster.primary_ip_family == netutils.IP6Address.family:
4700 primary_ip_version = constants.IP6_VERSION
4703 "software_version": constants.RELEASE_VERSION,
4704 "protocol_version": constants.PROTOCOL_VERSION,
4705 "config_version": constants.CONFIG_VERSION,
4706 "os_api_version": max(constants.OS_API_VERSIONS),
4707 "export_version": constants.EXPORT_VERSION,
4708 "architecture": (platform.architecture()[0], platform.machine()),
4709 "name": cluster.cluster_name,
4710 "master": cluster.master_node,
4711 "default_hypervisor": cluster.enabled_hypervisors[0],
4712 "enabled_hypervisors": cluster.enabled_hypervisors,
4713 "hvparams": dict([(hypervisor_name, cluster.hvparams[hypervisor_name])
4714 for hypervisor_name in cluster.enabled_hypervisors]),
4716 "beparams": cluster.beparams,
4717 "osparams": cluster.osparams,
4718 "nicparams": cluster.nicparams,
4719 "ndparams": cluster.ndparams,
4720 "candidate_pool_size": cluster.candidate_pool_size,
4721 "master_netdev": cluster.master_netdev,
4722 "volume_group_name": cluster.volume_group_name,
4723 "drbd_usermode_helper": cluster.drbd_usermode_helper,
4724 "file_storage_dir": cluster.file_storage_dir,
4725 "maintain_node_health": cluster.maintain_node_health,
4726 "ctime": cluster.ctime,
4727 "mtime": cluster.mtime,
4728 "uuid": cluster.uuid,
4729 "tags": list(cluster.GetTags()),
4730 "uid_pool": cluster.uid_pool,
4731 "default_iallocator": cluster.default_iallocator,
4732 "reserved_lvs": cluster.reserved_lvs,
4733 "primary_ip_version": primary_ip_version,
4734 "prealloc_wipe_disks": cluster.prealloc_wipe_disks,
4735 "hidden_os": cluster.hidden_os,
4736 "blacklisted_os": cluster.blacklisted_os,
4742 class LUClusterConfigQuery(NoHooksLU):
4743 """Return configuration values.
4747 _FIELDS_DYNAMIC = utils.FieldSet()
4748 _FIELDS_STATIC = utils.FieldSet("cluster_name", "master_node", "drain_flag",
4749 "watcher_pause", "volume_group_name")
4751 def CheckArguments(self):
4752 _CheckOutputFields(static=self._FIELDS_STATIC,
4753 dynamic=self._FIELDS_DYNAMIC,
4754 selected=self.op.output_fields)
4756 def ExpandNames(self):
4757 self.needed_locks = {}
4759 def Exec(self, feedback_fn):
4760 """Dump a representation of the cluster config to the standard output.
4764 for field in self.op.output_fields:
4765 if field == "cluster_name":
4766 entry = self.cfg.GetClusterName()
4767 elif field == "master_node":
4768 entry = self.cfg.GetMasterNode()
4769 elif field == "drain_flag":
4770 entry = os.path.exists(constants.JOB_QUEUE_DRAIN_FILE)
4771 elif field == "watcher_pause":
4772 entry = utils.ReadWatcherPauseFile(constants.WATCHER_PAUSEFILE)
4773 elif field == "volume_group_name":
4774 entry = self.cfg.GetVGName()
4776 raise errors.ParameterError(field)
4777 values.append(entry)
4781 class LUInstanceActivateDisks(NoHooksLU):
4782 """Bring up an instance's disks.
4787 def ExpandNames(self):
4788 self._ExpandAndLockInstance()
4789 self.needed_locks[locking.LEVEL_NODE] = []
4790 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
4792 def DeclareLocks(self, level):
4793 if level == locking.LEVEL_NODE:
4794 self._LockInstancesNodes()
4796 def CheckPrereq(self):
4797 """Check prerequisites.
4799 This checks that the instance is in the cluster.
4802 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
4803 assert self.instance is not None, \
4804 "Cannot retrieve locked instance %s" % self.op.instance_name
4805 _CheckNodeOnline(self, self.instance.primary_node)
4807 def Exec(self, feedback_fn):
4808 """Activate the disks.
4811 disks_ok, disks_info = \
4812 _AssembleInstanceDisks(self, self.instance,
4813 ignore_size=self.op.ignore_size)
4815 raise errors.OpExecError("Cannot activate block devices")
4820 def _AssembleInstanceDisks(lu, instance, disks=None, ignore_secondaries=False,
4822 """Prepare the block devices for an instance.
4824 This sets up the block devices on all nodes.
4826 @type lu: L{LogicalUnit}
4827 @param lu: the logical unit on whose behalf we execute
4828 @type instance: L{objects.Instance}
4829 @param instance: the instance for whose disks we assemble
4830 @type disks: list of L{objects.Disk} or None
4831 @param disks: which disks to assemble (or all, if None)
4832 @type ignore_secondaries: boolean
4833 @param ignore_secondaries: if true, errors on secondary nodes
4834 won't result in an error return from the function
4835 @type ignore_size: boolean
4836 @param ignore_size: if true, the current known size of the disk
4837 will not be used during the disk activation, useful for cases
4838 when the size is wrong
4839 @return: False if the operation failed, otherwise a list of
4840 (host, instance_visible_name, node_visible_name)
4841 with the mapping from node devices to instance devices
4846 iname = instance.name
4847 disks = _ExpandCheckDisks(instance, disks)
4849 # With the two passes mechanism we try to reduce the window of
4850 # opportunity for the race condition of switching DRBD to primary
4851 # before handshaking occured, but we do not eliminate it
4853 # The proper fix would be to wait (with some limits) until the
4854 # connection has been made and drbd transitions from WFConnection
4855 # into any other network-connected state (Connected, SyncTarget,
4858 # 1st pass, assemble on all nodes in secondary mode
4859 for idx, inst_disk in enumerate(disks):
4860 for node, node_disk in inst_disk.ComputeNodeTree(instance.primary_node):
4862 node_disk = node_disk.Copy()
4863 node_disk.UnsetSize()
4864 lu.cfg.SetDiskID(node_disk, node)
4865 result = lu.rpc.call_blockdev_assemble(node, node_disk, iname, False, idx)
4866 msg = result.fail_msg
4868 lu.proc.LogWarning("Could not prepare block device %s on node %s"
4869 " (is_primary=False, pass=1): %s",
4870 inst_disk.iv_name, node, msg)
4871 if not ignore_secondaries:
4874 # FIXME: race condition on drbd migration to primary
4876 # 2nd pass, do only the primary node
4877 for idx, inst_disk in enumerate(disks):
4880 for node, node_disk in inst_disk.ComputeNodeTree(instance.primary_node):
4881 if node != instance.primary_node:
4884 node_disk = node_disk.Copy()
4885 node_disk.UnsetSize()
4886 lu.cfg.SetDiskID(node_disk, node)
4887 result = lu.rpc.call_blockdev_assemble(node, node_disk, iname, True, idx)
4888 msg = result.fail_msg
4890 lu.proc.LogWarning("Could not prepare block device %s on node %s"
4891 " (is_primary=True, pass=2): %s",
4892 inst_disk.iv_name, node, msg)
4895 dev_path = result.payload
4897 device_info.append((instance.primary_node, inst_disk.iv_name, dev_path))
4899 # leave the disks configured for the primary node
4900 # this is a workaround that would be fixed better by
4901 # improving the logical/physical id handling
4903 lu.cfg.SetDiskID(disk, instance.primary_node)
4905 return disks_ok, device_info
4908 def _StartInstanceDisks(lu, instance, force):
4909 """Start the disks of an instance.
4912 disks_ok, _ = _AssembleInstanceDisks(lu, instance,
4913 ignore_secondaries=force)
4915 _ShutdownInstanceDisks(lu, instance)
4916 if force is not None and not force:
4917 lu.proc.LogWarning("", hint="If the message above refers to a"
4919 " you can retry the operation using '--force'.")
4920 raise errors.OpExecError("Disk consistency error")
4923 class LUInstanceDeactivateDisks(NoHooksLU):
4924 """Shutdown an instance's disks.
4929 def ExpandNames(self):
4930 self._ExpandAndLockInstance()
4931 self.needed_locks[locking.LEVEL_NODE] = []
4932 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
4934 def DeclareLocks(self, level):
4935 if level == locking.LEVEL_NODE:
4936 self._LockInstancesNodes()
4938 def CheckPrereq(self):
4939 """Check prerequisites.
4941 This checks that the instance is in the cluster.
4944 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
4945 assert self.instance is not None, \
4946 "Cannot retrieve locked instance %s" % self.op.instance_name
4948 def Exec(self, feedback_fn):
4949 """Deactivate the disks
4952 instance = self.instance
4954 _ShutdownInstanceDisks(self, instance)
4956 _SafeShutdownInstanceDisks(self, instance)
4959 def _SafeShutdownInstanceDisks(lu, instance, disks=None):
4960 """Shutdown block devices of an instance.
4962 This function checks if an instance is running, before calling
4963 _ShutdownInstanceDisks.
4966 _CheckInstanceDown(lu, instance, "cannot shutdown disks")
4967 _ShutdownInstanceDisks(lu, instance, disks=disks)
4970 def _ExpandCheckDisks(instance, disks):
4971 """Return the instance disks selected by the disks list
4973 @type disks: list of L{objects.Disk} or None
4974 @param disks: selected disks
4975 @rtype: list of L{objects.Disk}
4976 @return: selected instance disks to act on
4980 return instance.disks
4982 if not set(disks).issubset(instance.disks):
4983 raise errors.ProgrammerError("Can only act on disks belonging to the"
4988 def _ShutdownInstanceDisks(lu, instance, disks=None, ignore_primary=False):
4989 """Shutdown block devices of an instance.
4991 This does the shutdown on all nodes of the instance.
4993 If the ignore_primary is false, errors on the primary node are
4998 disks = _ExpandCheckDisks(instance, disks)
5001 for node, top_disk in disk.ComputeNodeTree(instance.primary_node):
5002 lu.cfg.SetDiskID(top_disk, node)
5003 result = lu.rpc.call_blockdev_shutdown(node, top_disk)
5004 msg = result.fail_msg
5006 lu.LogWarning("Could not shutdown block device %s on node %s: %s",
5007 disk.iv_name, node, msg)
5008 if ((node == instance.primary_node and not ignore_primary) or
5009 (node != instance.primary_node and not result.offline)):
5014 def _CheckNodeFreeMemory(lu, node, reason, requested, hypervisor_name):
5015 """Checks if a node has enough free memory.
5017 This function check if a given node has the needed amount of free
5018 memory. In case the node has less memory or we cannot get the
5019 information from the node, this function raise an OpPrereqError
5022 @type lu: C{LogicalUnit}
5023 @param lu: a logical unit from which we get configuration data
5025 @param node: the node to check
5026 @type reason: C{str}
5027 @param reason: string to use in the error message
5028 @type requested: C{int}
5029 @param requested: the amount of memory in MiB to check for
5030 @type hypervisor_name: C{str}
5031 @param hypervisor_name: the hypervisor to ask for memory stats
5032 @raise errors.OpPrereqError: if the node doesn't have enough memory, or
5033 we cannot check the node
5036 nodeinfo = lu.rpc.call_node_info([node], None, hypervisor_name)
5037 nodeinfo[node].Raise("Can't get data from node %s" % node,
5038 prereq=True, ecode=errors.ECODE_ENVIRON)
5039 free_mem = nodeinfo[node].payload.get('memory_free', None)
5040 if not isinstance(free_mem, int):
5041 raise errors.OpPrereqError("Can't compute free memory on node %s, result"
5042 " was '%s'" % (node, free_mem),
5043 errors.ECODE_ENVIRON)
5044 if requested > free_mem:
5045 raise errors.OpPrereqError("Not enough memory on node %s for %s:"
5046 " needed %s MiB, available %s MiB" %
5047 (node, reason, requested, free_mem),
5051 def _CheckNodesFreeDiskPerVG(lu, nodenames, req_sizes):
5052 """Checks if nodes have enough free disk space in the all VGs.
5054 This function check if all given nodes have the needed amount of
5055 free disk. In case any node has less disk or we cannot get the
5056 information from the node, this function raise an OpPrereqError
5059 @type lu: C{LogicalUnit}
5060 @param lu: a logical unit from which we get configuration data
5061 @type nodenames: C{list}
5062 @param nodenames: the list of node names to check
5063 @type req_sizes: C{dict}
5064 @param req_sizes: the hash of vg and corresponding amount of disk in
5066 @raise errors.OpPrereqError: if the node doesn't have enough disk,
5067 or we cannot check the node
5070 for vg, req_size in req_sizes.items():
5071 _CheckNodesFreeDiskOnVG(lu, nodenames, vg, req_size)
5074 def _CheckNodesFreeDiskOnVG(lu, nodenames, vg, requested):
5075 """Checks if nodes have enough free disk space in the specified VG.
5077 This function check if all given nodes have the needed amount of
5078 free disk. In case any node has less disk or we cannot get the
5079 information from the node, this function raise an OpPrereqError
5082 @type lu: C{LogicalUnit}
5083 @param lu: a logical unit from which we get configuration data
5084 @type nodenames: C{list}
5085 @param nodenames: the list of node names to check
5087 @param vg: the volume group to check
5088 @type requested: C{int}
5089 @param requested: the amount of disk in MiB to check for
5090 @raise errors.OpPrereqError: if the node doesn't have enough disk,
5091 or we cannot check the node
5094 nodeinfo = lu.rpc.call_node_info(nodenames, vg, None)
5095 for node in nodenames:
5096 info = nodeinfo[node]
5097 info.Raise("Cannot get current information from node %s" % node,
5098 prereq=True, ecode=errors.ECODE_ENVIRON)
5099 vg_free = info.payload.get("vg_free", None)
5100 if not isinstance(vg_free, int):
5101 raise errors.OpPrereqError("Can't compute free disk space on node"
5102 " %s for vg %s, result was '%s'" %
5103 (node, vg, vg_free), errors.ECODE_ENVIRON)
5104 if requested > vg_free:
5105 raise errors.OpPrereqError("Not enough disk space on target node %s"
5106 " vg %s: required %d MiB, available %d MiB" %
5107 (node, vg, requested, vg_free),
5111 class LUInstanceStartup(LogicalUnit):
5112 """Starts an instance.
5115 HPATH = "instance-start"
5116 HTYPE = constants.HTYPE_INSTANCE
5119 def CheckArguments(self):
5121 if self.op.beparams:
5122 # fill the beparams dict
5123 utils.ForceDictType(self.op.beparams, constants.BES_PARAMETER_TYPES)
5125 def ExpandNames(self):
5126 self._ExpandAndLockInstance()
5128 def BuildHooksEnv(self):
5131 This runs on master, primary and secondary nodes of the instance.
5135 "FORCE": self.op.force,
5137 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
5138 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
5141 def CheckPrereq(self):
5142 """Check prerequisites.
5144 This checks that the instance is in the cluster.
5147 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5148 assert self.instance is not None, \
5149 "Cannot retrieve locked instance %s" % self.op.instance_name
5152 if self.op.hvparams:
5153 # check hypervisor parameter syntax (locally)
5154 cluster = self.cfg.GetClusterInfo()
5155 utils.ForceDictType(self.op.hvparams, constants.HVS_PARAMETER_TYPES)
5156 filled_hvp = cluster.FillHV(instance)
5157 filled_hvp.update(self.op.hvparams)
5158 hv_type = hypervisor.GetHypervisor(instance.hypervisor)
5159 hv_type.CheckParameterSyntax(filled_hvp)
5160 _CheckHVParams(self, instance.all_nodes, instance.hypervisor, filled_hvp)
5162 self.primary_offline = self.cfg.GetNodeInfo(instance.primary_node).offline
5164 if self.primary_offline and self.op.ignore_offline_nodes:
5165 self.proc.LogWarning("Ignoring offline primary node")
5167 if self.op.hvparams or self.op.beparams:
5168 self.proc.LogWarning("Overridden parameters are ignored")
5170 _CheckNodeOnline(self, instance.primary_node)
5172 bep = self.cfg.GetClusterInfo().FillBE(instance)
5174 # check bridges existence
5175 _CheckInstanceBridgesExist(self, instance)
5177 remote_info = self.rpc.call_instance_info(instance.primary_node,
5179 instance.hypervisor)
5180 remote_info.Raise("Error checking node %s" % instance.primary_node,
5181 prereq=True, ecode=errors.ECODE_ENVIRON)
5182 if not remote_info.payload: # not running already
5183 _CheckNodeFreeMemory(self, instance.primary_node,
5184 "starting instance %s" % instance.name,
5185 bep[constants.BE_MEMORY], instance.hypervisor)
5187 def Exec(self, feedback_fn):
5188 """Start the instance.
5191 instance = self.instance
5192 force = self.op.force
5194 self.cfg.MarkInstanceUp(instance.name)
5196 if self.primary_offline:
5197 assert self.op.ignore_offline_nodes
5198 self.proc.LogInfo("Primary node offline, marked instance as started")
5200 node_current = instance.primary_node
5202 _StartInstanceDisks(self, instance, force)
5204 result = self.rpc.call_instance_start(node_current, instance,
5205 self.op.hvparams, self.op.beparams)
5206 msg = result.fail_msg
5208 _ShutdownInstanceDisks(self, instance)
5209 raise errors.OpExecError("Could not start instance: %s" % msg)
5212 class LUInstanceReboot(LogicalUnit):
5213 """Reboot an instance.
5216 HPATH = "instance-reboot"
5217 HTYPE = constants.HTYPE_INSTANCE
5220 def ExpandNames(self):
5221 self._ExpandAndLockInstance()
5223 def BuildHooksEnv(self):
5226 This runs on master, primary and secondary nodes of the instance.
5230 "IGNORE_SECONDARIES": self.op.ignore_secondaries,
5231 "REBOOT_TYPE": self.op.reboot_type,
5232 "SHUTDOWN_TIMEOUT": self.op.shutdown_timeout,
5234 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
5235 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
5238 def CheckPrereq(self):
5239 """Check prerequisites.
5241 This checks that the instance is in the cluster.
5244 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5245 assert self.instance is not None, \
5246 "Cannot retrieve locked instance %s" % self.op.instance_name
5248 _CheckNodeOnline(self, instance.primary_node)
5250 # check bridges existence
5251 _CheckInstanceBridgesExist(self, instance)
5253 def Exec(self, feedback_fn):
5254 """Reboot the instance.
5257 instance = self.instance
5258 ignore_secondaries = self.op.ignore_secondaries
5259 reboot_type = self.op.reboot_type
5261 node_current = instance.primary_node
5263 if reboot_type in [constants.INSTANCE_REBOOT_SOFT,
5264 constants.INSTANCE_REBOOT_HARD]:
5265 for disk in instance.disks:
5266 self.cfg.SetDiskID(disk, node_current)
5267 result = self.rpc.call_instance_reboot(node_current, instance,
5269 self.op.shutdown_timeout)
5270 result.Raise("Could not reboot instance")
5272 result = self.rpc.call_instance_shutdown(node_current, instance,
5273 self.op.shutdown_timeout)
5274 result.Raise("Could not shutdown instance for full reboot")
5275 _ShutdownInstanceDisks(self, instance)
5276 _StartInstanceDisks(self, instance, ignore_secondaries)
5277 result = self.rpc.call_instance_start(node_current, instance, None, None)
5278 msg = result.fail_msg
5280 _ShutdownInstanceDisks(self, instance)
5281 raise errors.OpExecError("Could not start instance for"
5282 " full reboot: %s" % msg)
5284 self.cfg.MarkInstanceUp(instance.name)
5287 class LUInstanceShutdown(LogicalUnit):
5288 """Shutdown an instance.
5291 HPATH = "instance-stop"
5292 HTYPE = constants.HTYPE_INSTANCE
5295 def ExpandNames(self):
5296 self._ExpandAndLockInstance()
5298 def BuildHooksEnv(self):
5301 This runs on master, primary and secondary nodes of the instance.
5304 env = _BuildInstanceHookEnvByObject(self, self.instance)
5305 env["TIMEOUT"] = self.op.timeout
5306 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
5309 def CheckPrereq(self):
5310 """Check prerequisites.
5312 This checks that the instance is in the cluster.
5315 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5316 assert self.instance is not None, \
5317 "Cannot retrieve locked instance %s" % self.op.instance_name
5319 self.primary_offline = \
5320 self.cfg.GetNodeInfo(self.instance.primary_node).offline
5322 if self.primary_offline and self.op.ignore_offline_nodes:
5323 self.proc.LogWarning("Ignoring offline primary node")
5325 _CheckNodeOnline(self, self.instance.primary_node)
5327 def Exec(self, feedback_fn):
5328 """Shutdown the instance.
5331 instance = self.instance
5332 node_current = instance.primary_node
5333 timeout = self.op.timeout
5335 self.cfg.MarkInstanceDown(instance.name)
5337 if self.primary_offline:
5338 assert self.op.ignore_offline_nodes
5339 self.proc.LogInfo("Primary node offline, marked instance as stopped")
5341 result = self.rpc.call_instance_shutdown(node_current, instance, timeout)
5342 msg = result.fail_msg
5344 self.proc.LogWarning("Could not shutdown instance: %s" % msg)
5346 _ShutdownInstanceDisks(self, instance)
5349 class LUInstanceReinstall(LogicalUnit):
5350 """Reinstall an instance.
5353 HPATH = "instance-reinstall"
5354 HTYPE = constants.HTYPE_INSTANCE
5357 def ExpandNames(self):
5358 self._ExpandAndLockInstance()
5360 def BuildHooksEnv(self):
5363 This runs on master, primary and secondary nodes of the instance.
5366 env = _BuildInstanceHookEnvByObject(self, self.instance)
5367 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
5370 def CheckPrereq(self):
5371 """Check prerequisites.
5373 This checks that the instance is in the cluster and is not running.
5376 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5377 assert instance is not None, \
5378 "Cannot retrieve locked instance %s" % self.op.instance_name
5379 _CheckNodeOnline(self, instance.primary_node, "Instance primary node"
5380 " offline, cannot reinstall")
5381 for node in instance.secondary_nodes:
5382 _CheckNodeOnline(self, node, "Instance secondary node offline,"
5383 " cannot reinstall")
5385 if instance.disk_template == constants.DT_DISKLESS:
5386 raise errors.OpPrereqError("Instance '%s' has no disks" %
5387 self.op.instance_name,
5389 _CheckInstanceDown(self, instance, "cannot reinstall")
5391 if self.op.os_type is not None:
5393 pnode = _ExpandNodeName(self.cfg, instance.primary_node)
5394 _CheckNodeHasOS(self, pnode, self.op.os_type, self.op.force_variant)
5395 instance_os = self.op.os_type
5397 instance_os = instance.os
5399 nodelist = list(instance.all_nodes)
5401 if self.op.osparams:
5402 i_osdict = _GetUpdatedParams(instance.osparams, self.op.osparams)
5403 _CheckOSParams(self, True, nodelist, instance_os, i_osdict)
5404 self.os_inst = i_osdict # the new dict (without defaults)
5408 self.instance = instance
5410 def Exec(self, feedback_fn):
5411 """Reinstall the instance.
5414 inst = self.instance
5416 if self.op.os_type is not None:
5417 feedback_fn("Changing OS to '%s'..." % self.op.os_type)
5418 inst.os = self.op.os_type
5419 # Write to configuration
5420 self.cfg.Update(inst, feedback_fn)
5422 _StartInstanceDisks(self, inst, None)
5424 feedback_fn("Running the instance OS create scripts...")
5425 # FIXME: pass debug option from opcode to backend
5426 result = self.rpc.call_instance_os_add(inst.primary_node, inst, True,
5427 self.op.debug_level,
5428 osparams=self.os_inst)
5429 result.Raise("Could not install OS for instance %s on node %s" %
5430 (inst.name, inst.primary_node))
5432 _ShutdownInstanceDisks(self, inst)
5435 class LUInstanceRecreateDisks(LogicalUnit):
5436 """Recreate an instance's missing disks.
5439 HPATH = "instance-recreate-disks"
5440 HTYPE = constants.HTYPE_INSTANCE
5443 def CheckArguments(self):
5444 # normalise the disk list
5445 self.op.disks = sorted(frozenset(self.op.disks))
5447 def ExpandNames(self):
5448 self._ExpandAndLockInstance()
5449 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_APPEND
5451 self.op.nodes = [_ExpandNodeName(self.cfg, n) for n in self.op.nodes]
5452 self.needed_locks[locking.LEVEL_NODE] = list(self.op.nodes)
5454 self.needed_locks[locking.LEVEL_NODE] = []
5456 def DeclareLocks(self, level):
5457 if level == locking.LEVEL_NODE:
5458 # if we replace the nodes, we only need to lock the old primary,
5459 # otherwise we need to lock all nodes for disk re-creation
5460 primary_only = bool(self.op.nodes)
5461 self._LockInstancesNodes(primary_only=primary_only)
5463 def BuildHooksEnv(self):
5466 This runs on master, primary and secondary nodes of the instance.
5469 env = _BuildInstanceHookEnvByObject(self, self.instance)
5470 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
5473 def CheckPrereq(self):
5474 """Check prerequisites.
5476 This checks that the instance is in the cluster and is not running.
5479 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5480 assert instance is not None, \
5481 "Cannot retrieve locked instance %s" % self.op.instance_name
5483 if len(self.op.nodes) != len(instance.all_nodes):
5484 raise errors.OpPrereqError("Instance %s currently has %d nodes, but"
5485 " %d replacement nodes were specified" %
5486 (instance.name, len(instance.all_nodes),
5487 len(self.op.nodes)),
5489 assert instance.disk_template != constants.DT_DRBD8 or \
5490 len(self.op.nodes) == 2
5491 assert instance.disk_template != constants.DT_PLAIN or \
5492 len(self.op.nodes) == 1
5493 primary_node = self.op.nodes[0]
5495 primary_node = instance.primary_node
5496 _CheckNodeOnline(self, primary_node)
5498 if instance.disk_template == constants.DT_DISKLESS:
5499 raise errors.OpPrereqError("Instance '%s' has no disks" %
5500 self.op.instance_name, errors.ECODE_INVAL)
5501 # if we replace nodes *and* the old primary is offline, we don't
5503 assert instance.primary_node in self.needed_locks[locking.LEVEL_NODE]
5504 old_pnode = self.cfg.GetNodeInfo(instance.primary_node)
5505 if not (self.op.nodes and old_pnode.offline):
5506 _CheckInstanceDown(self, instance, "cannot recreate disks")
5508 if not self.op.disks:
5509 self.op.disks = range(len(instance.disks))
5511 for idx in self.op.disks:
5512 if idx >= len(instance.disks):
5513 raise errors.OpPrereqError("Invalid disk index passed '%s'" % idx,
5515 if self.op.disks != range(len(instance.disks)) and self.op.nodes:
5516 raise errors.OpPrereqError("Can't recreate disks partially and"
5517 " change the nodes at the same time",
5519 self.instance = instance
5521 def Exec(self, feedback_fn):
5522 """Recreate the disks.
5525 # change primary node, if needed
5527 self.instance.primary_node = self.op.nodes[0]
5528 self.LogWarning("Changing the instance's nodes, you will have to"
5529 " remove any disks left on the older nodes manually")
5532 for idx, disk in enumerate(self.instance.disks):
5533 if idx not in self.op.disks: # disk idx has not been passed in
5536 # update secondaries for disks, if needed
5538 if disk.dev_type == constants.LD_DRBD8:
5539 # need to update the nodes
5540 assert len(self.op.nodes) == 2
5541 logical_id = list(disk.logical_id)
5542 logical_id[0] = self.op.nodes[0]
5543 logical_id[1] = self.op.nodes[1]
5544 disk.logical_id = tuple(logical_id)
5547 self.cfg.Update(self.instance, feedback_fn)
5549 _CreateDisks(self, self.instance, to_skip=to_skip)
5552 class LUInstanceRename(LogicalUnit):
5553 """Rename an instance.
5556 HPATH = "instance-rename"
5557 HTYPE = constants.HTYPE_INSTANCE
5559 def CheckArguments(self):
5563 if self.op.ip_check and not self.op.name_check:
5564 # TODO: make the ip check more flexible and not depend on the name check
5565 raise errors.OpPrereqError("Cannot do ip check without a name check",
5568 def BuildHooksEnv(self):
5571 This runs on master, primary and secondary nodes of the instance.
5574 env = _BuildInstanceHookEnvByObject(self, self.instance)
5575 env["INSTANCE_NEW_NAME"] = self.op.new_name
5576 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
5579 def CheckPrereq(self):
5580 """Check prerequisites.
5582 This checks that the instance is in the cluster and is not running.
5585 self.op.instance_name = _ExpandInstanceName(self.cfg,
5586 self.op.instance_name)
5587 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5588 assert instance is not None
5589 _CheckNodeOnline(self, instance.primary_node)
5590 _CheckInstanceDown(self, instance, "cannot rename")
5591 self.instance = instance
5593 new_name = self.op.new_name
5594 if self.op.name_check:
5595 hostname = netutils.GetHostname(name=new_name)
5596 if hostname != new_name:
5597 self.LogInfo("Resolved given name '%s' to '%s'", new_name,
5599 new_name = self.op.new_name = hostname.name
5600 if (self.op.ip_check and
5601 netutils.TcpPing(hostname.ip, constants.DEFAULT_NODED_PORT)):
5602 raise errors.OpPrereqError("IP %s of instance %s already in use" %
5603 (hostname.ip, new_name),
5604 errors.ECODE_NOTUNIQUE)
5606 instance_list = self.cfg.GetInstanceList()
5607 if new_name in instance_list and new_name != instance.name:
5608 raise errors.OpPrereqError("Instance '%s' is already in the cluster" %
5609 new_name, errors.ECODE_EXISTS)
5611 def Exec(self, feedback_fn):
5612 """Rename the instance.
5615 inst = self.instance
5616 old_name = inst.name
5618 rename_file_storage = False
5619 if (inst.disk_template == constants.DT_FILE and
5620 self.op.new_name != inst.name):
5621 old_file_storage_dir = os.path.dirname(inst.disks[0].logical_id[1])
5622 rename_file_storage = True
5624 self.cfg.RenameInstance(inst.name, self.op.new_name)
5625 # Change the instance lock. This is definitely safe while we hold the BGL
5626 self.context.glm.remove(locking.LEVEL_INSTANCE, old_name)
5627 self.context.glm.add(locking.LEVEL_INSTANCE, self.op.new_name)
5629 # re-read the instance from the configuration after rename
5630 inst = self.cfg.GetInstanceInfo(self.op.new_name)
5632 if rename_file_storage:
5633 new_file_storage_dir = os.path.dirname(inst.disks[0].logical_id[1])
5634 result = self.rpc.call_file_storage_dir_rename(inst.primary_node,
5635 old_file_storage_dir,
5636 new_file_storage_dir)
5637 result.Raise("Could not rename on node %s directory '%s' to '%s'"
5638 " (but the instance has been renamed in Ganeti)" %
5639 (inst.primary_node, old_file_storage_dir,
5640 new_file_storage_dir))
5642 _StartInstanceDisks(self, inst, None)
5644 result = self.rpc.call_instance_run_rename(inst.primary_node, inst,
5645 old_name, self.op.debug_level)
5646 msg = result.fail_msg
5648 msg = ("Could not run OS rename script for instance %s on node %s"
5649 " (but the instance has been renamed in Ganeti): %s" %
5650 (inst.name, inst.primary_node, msg))
5651 self.proc.LogWarning(msg)
5653 _ShutdownInstanceDisks(self, inst)
5658 class LUInstanceRemove(LogicalUnit):
5659 """Remove an instance.
5662 HPATH = "instance-remove"
5663 HTYPE = constants.HTYPE_INSTANCE
5666 def ExpandNames(self):
5667 self._ExpandAndLockInstance()
5668 self.needed_locks[locking.LEVEL_NODE] = []
5669 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5671 def DeclareLocks(self, level):
5672 if level == locking.LEVEL_NODE:
5673 self._LockInstancesNodes()
5675 def BuildHooksEnv(self):
5678 This runs on master, primary and secondary nodes of the instance.
5681 env = _BuildInstanceHookEnvByObject(self, self.instance)
5682 env["SHUTDOWN_TIMEOUT"] = self.op.shutdown_timeout
5683 nl = [self.cfg.GetMasterNode()]
5684 nl_post = list(self.instance.all_nodes) + nl
5685 return env, nl, nl_post
5687 def CheckPrereq(self):
5688 """Check prerequisites.
5690 This checks that the instance is in the cluster.
5693 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5694 assert self.instance is not None, \
5695 "Cannot retrieve locked instance %s" % self.op.instance_name
5697 def Exec(self, feedback_fn):
5698 """Remove the instance.
5701 instance = self.instance
5702 logging.info("Shutting down instance %s on node %s",
5703 instance.name, instance.primary_node)
5705 result = self.rpc.call_instance_shutdown(instance.primary_node, instance,
5706 self.op.shutdown_timeout)
5707 msg = result.fail_msg
5709 if self.op.ignore_failures:
5710 feedback_fn("Warning: can't shutdown instance: %s" % msg)
5712 raise errors.OpExecError("Could not shutdown instance %s on"
5714 (instance.name, instance.primary_node, msg))
5716 _RemoveInstance(self, feedback_fn, instance, self.op.ignore_failures)
5719 def _RemoveInstance(lu, feedback_fn, instance, ignore_failures):
5720 """Utility function to remove an instance.
5723 logging.info("Removing block devices for instance %s", instance.name)
5725 if not _RemoveDisks(lu, instance):
5726 if not ignore_failures:
5727 raise errors.OpExecError("Can't remove instance's disks")
5728 feedback_fn("Warning: can't remove instance's disks")
5730 logging.info("Removing instance %s out of cluster config", instance.name)
5732 lu.cfg.RemoveInstance(instance.name)
5734 assert not lu.remove_locks.get(locking.LEVEL_INSTANCE), \
5735 "Instance lock removal conflict"
5737 # Remove lock for the instance
5738 lu.remove_locks[locking.LEVEL_INSTANCE] = instance.name
5741 class LUInstanceQuery(NoHooksLU):
5742 """Logical unit for querying instances.
5745 # pylint: disable-msg=W0142
5748 def CheckArguments(self):
5749 self.iq = _InstanceQuery(self.op.names, self.op.output_fields,
5750 self.op.use_locking)
5752 def ExpandNames(self):
5753 self.iq.ExpandNames(self)
5755 def DeclareLocks(self, level):
5756 self.iq.DeclareLocks(self, level)
5758 def Exec(self, feedback_fn):
5759 return self.iq.OldStyleQuery(self)
5762 class LUInstanceFailover(LogicalUnit):
5763 """Failover an instance.
5766 HPATH = "instance-failover"
5767 HTYPE = constants.HTYPE_INSTANCE
5770 def ExpandNames(self):
5771 self._ExpandAndLockInstance()
5772 self.needed_locks[locking.LEVEL_NODE] = []
5773 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5775 def DeclareLocks(self, level):
5776 if level == locking.LEVEL_NODE:
5777 self._LockInstancesNodes()
5779 def BuildHooksEnv(self):
5782 This runs on master, primary and secondary nodes of the instance.
5785 instance = self.instance
5786 source_node = instance.primary_node
5787 target_node = instance.secondary_nodes[0]
5789 "IGNORE_CONSISTENCY": self.op.ignore_consistency,
5790 "SHUTDOWN_TIMEOUT": self.op.shutdown_timeout,
5791 "OLD_PRIMARY": source_node,
5792 "OLD_SECONDARY": target_node,
5793 "NEW_PRIMARY": target_node,
5794 "NEW_SECONDARY": source_node,
5796 env.update(_BuildInstanceHookEnvByObject(self, instance))
5797 nl = [self.cfg.GetMasterNode()] + list(instance.secondary_nodes)
5799 nl_post.append(source_node)
5800 return env, nl, nl_post
5802 def CheckPrereq(self):
5803 """Check prerequisites.
5805 This checks that the instance is in the cluster.
5808 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5809 assert self.instance is not None, \
5810 "Cannot retrieve locked instance %s" % self.op.instance_name
5812 bep = self.cfg.GetClusterInfo().FillBE(instance)
5813 if instance.disk_template not in constants.DTS_NET_MIRROR:
5814 raise errors.OpPrereqError("Instance's disk layout is not"
5815 " network mirrored, cannot failover.",
5818 secondary_nodes = instance.secondary_nodes
5819 if not secondary_nodes:
5820 raise errors.ProgrammerError("no secondary node but using "
5821 "a mirrored disk template")
5823 target_node = secondary_nodes[0]
5824 _CheckNodeOnline(self, target_node)
5825 _CheckNodeNotDrained(self, target_node)
5826 if instance.admin_up:
5827 # check memory requirements on the secondary node
5828 _CheckNodeFreeMemory(self, target_node, "failing over instance %s" %
5829 instance.name, bep[constants.BE_MEMORY],
5830 instance.hypervisor)
5832 self.LogInfo("Not checking memory on the secondary node as"
5833 " instance will not be started")
5835 # check bridge existance
5836 _CheckInstanceBridgesExist(self, instance, node=target_node)
5838 def Exec(self, feedback_fn):
5839 """Failover an instance.
5841 The failover is done by shutting it down on its present node and
5842 starting it on the secondary.
5845 instance = self.instance
5846 primary_node = self.cfg.GetNodeInfo(instance.primary_node)
5848 source_node = instance.primary_node
5849 target_node = instance.secondary_nodes[0]
5851 if instance.admin_up:
5852 feedback_fn("* checking disk consistency between source and target")
5853 for dev in instance.disks:
5854 # for drbd, these are drbd over lvm
5855 if not _CheckDiskConsistency(self, dev, target_node, False):
5856 if not self.op.ignore_consistency:
5857 raise errors.OpExecError("Disk %s is degraded on target node,"
5858 " aborting failover." % dev.iv_name)
5860 feedback_fn("* not checking disk consistency as instance is not running")
5862 feedback_fn("* shutting down instance on source node")
5863 logging.info("Shutting down instance %s on node %s",
5864 instance.name, source_node)
5866 result = self.rpc.call_instance_shutdown(source_node, instance,
5867 self.op.shutdown_timeout)
5868 msg = result.fail_msg
5870 if self.op.ignore_consistency or primary_node.offline:
5871 self.proc.LogWarning("Could not shutdown instance %s on node %s."
5872 " Proceeding anyway. Please make sure node"
5873 " %s is down. Error details: %s",
5874 instance.name, source_node, source_node, msg)
5876 raise errors.OpExecError("Could not shutdown instance %s on"
5878 (instance.name, source_node, msg))
5880 feedback_fn("* deactivating the instance's disks on source node")
5881 if not _ShutdownInstanceDisks(self, instance, ignore_primary=True):
5882 raise errors.OpExecError("Can't shut down the instance's disks.")
5884 instance.primary_node = target_node
5885 # distribute new instance config to the other nodes
5886 self.cfg.Update(instance, feedback_fn)
5888 # Only start the instance if it's marked as up
5889 if instance.admin_up:
5890 feedback_fn("* activating the instance's disks on target node")
5891 logging.info("Starting instance %s on node %s",
5892 instance.name, target_node)
5894 disks_ok, _ = _AssembleInstanceDisks(self, instance,
5895 ignore_secondaries=True)
5897 _ShutdownInstanceDisks(self, instance)
5898 raise errors.OpExecError("Can't activate the instance's disks")
5900 feedback_fn("* starting the instance on the target node")
5901 result = self.rpc.call_instance_start(target_node, instance, None, None)
5902 msg = result.fail_msg
5904 _ShutdownInstanceDisks(self, instance)
5905 raise errors.OpExecError("Could not start instance %s on node %s: %s" %
5906 (instance.name, target_node, msg))
5909 class LUInstanceMigrate(LogicalUnit):
5910 """Migrate an instance.
5912 This is migration without shutting down, compared to the failover,
5913 which is done with shutdown.
5916 HPATH = "instance-migrate"
5917 HTYPE = constants.HTYPE_INSTANCE
5920 def ExpandNames(self):
5921 self._ExpandAndLockInstance()
5923 self.needed_locks[locking.LEVEL_NODE] = []
5924 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5926 self._migrater = TLMigrateInstance(self, self.op.instance_name,
5928 self.tasklets = [self._migrater]
5930 def DeclareLocks(self, level):
5931 if level == locking.LEVEL_NODE:
5932 self._LockInstancesNodes()
5934 def BuildHooksEnv(self):
5937 This runs on master, primary and secondary nodes of the instance.
5940 instance = self._migrater.instance
5941 source_node = instance.primary_node
5942 target_node = instance.secondary_nodes[0]
5943 env = _BuildInstanceHookEnvByObject(self, instance)
5944 env["MIGRATE_LIVE"] = self._migrater.live
5945 env["MIGRATE_CLEANUP"] = self.op.cleanup
5947 "OLD_PRIMARY": source_node,
5948 "OLD_SECONDARY": target_node,
5949 "NEW_PRIMARY": target_node,
5950 "NEW_SECONDARY": source_node,
5952 nl = [self.cfg.GetMasterNode()] + list(instance.secondary_nodes)
5954 nl_post.append(source_node)
5955 return env, nl, nl_post
5958 class LUInstanceMove(LogicalUnit):
5959 """Move an instance by data-copying.
5962 HPATH = "instance-move"
5963 HTYPE = constants.HTYPE_INSTANCE
5966 def ExpandNames(self):
5967 self._ExpandAndLockInstance()
5968 target_node = _ExpandNodeName(self.cfg, self.op.target_node)
5969 self.op.target_node = target_node
5970 self.needed_locks[locking.LEVEL_NODE] = [target_node]
5971 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_APPEND
5973 def DeclareLocks(self, level):
5974 if level == locking.LEVEL_NODE:
5975 self._LockInstancesNodes(primary_only=True)
5977 def BuildHooksEnv(self):
5980 This runs on master, primary and secondary nodes of the instance.
5984 "TARGET_NODE": self.op.target_node,
5985 "SHUTDOWN_TIMEOUT": self.op.shutdown_timeout,
5987 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
5988 nl = [self.cfg.GetMasterNode()] + [self.instance.primary_node,
5989 self.op.target_node]
5992 def CheckPrereq(self):
5993 """Check prerequisites.
5995 This checks that the instance is in the cluster.
5998 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5999 assert self.instance is not None, \
6000 "Cannot retrieve locked instance %s" % self.op.instance_name
6002 node = self.cfg.GetNodeInfo(self.op.target_node)
6003 assert node is not None, \
6004 "Cannot retrieve locked node %s" % self.op.target_node
6006 self.target_node = target_node = node.name
6008 if target_node == instance.primary_node:
6009 raise errors.OpPrereqError("Instance %s is already on the node %s" %
6010 (instance.name, target_node),
6013 bep = self.cfg.GetClusterInfo().FillBE(instance)
6015 for idx, dsk in enumerate(instance.disks):
6016 if dsk.dev_type not in (constants.LD_LV, constants.LD_FILE):
6017 raise errors.OpPrereqError("Instance disk %d has a complex layout,"
6018 " cannot copy" % idx, errors.ECODE_STATE)
6020 _CheckNodeOnline(self, target_node)
6021 _CheckNodeNotDrained(self, target_node)
6022 _CheckNodeVmCapable(self, target_node)
6024 if instance.admin_up:
6025 # check memory requirements on the secondary node
6026 _CheckNodeFreeMemory(self, target_node, "failing over instance %s" %
6027 instance.name, bep[constants.BE_MEMORY],
6028 instance.hypervisor)
6030 self.LogInfo("Not checking memory on the secondary node as"
6031 " instance will not be started")
6033 # check bridge existance
6034 _CheckInstanceBridgesExist(self, instance, node=target_node)
6036 def Exec(self, feedback_fn):
6037 """Move an instance.
6039 The move is done by shutting it down on its present node, copying
6040 the data over (slow) and starting it on the new node.
6043 instance = self.instance
6045 source_node = instance.primary_node
6046 target_node = self.target_node
6048 self.LogInfo("Shutting down instance %s on source node %s",
6049 instance.name, source_node)
6051 result = self.rpc.call_instance_shutdown(source_node, instance,
6052 self.op.shutdown_timeout)
6053 msg = result.fail_msg
6055 if self.op.ignore_consistency:
6056 self.proc.LogWarning("Could not shutdown instance %s on node %s."
6057 " Proceeding anyway. Please make sure node"
6058 " %s is down. Error details: %s",
6059 instance.name, source_node, source_node, msg)
6061 raise errors.OpExecError("Could not shutdown instance %s on"
6063 (instance.name, source_node, msg))
6065 # create the target disks
6067 _CreateDisks(self, instance, target_node=target_node)
6068 except errors.OpExecError:
6069 self.LogWarning("Device creation failed, reverting...")
6071 _RemoveDisks(self, instance, target_node=target_node)
6073 self.cfg.ReleaseDRBDMinors(instance.name)
6076 cluster_name = self.cfg.GetClusterInfo().cluster_name
6079 # activate, get path, copy the data over
6080 for idx, disk in enumerate(instance.disks):
6081 self.LogInfo("Copying data for disk %d", idx)
6082 result = self.rpc.call_blockdev_assemble(target_node, disk,
6083 instance.name, True, idx)
6085 self.LogWarning("Can't assemble newly created disk %d: %s",
6086 idx, result.fail_msg)
6087 errs.append(result.fail_msg)
6089 dev_path = result.payload
6090 result = self.rpc.call_blockdev_export(source_node, disk,
6091 target_node, dev_path,
6094 self.LogWarning("Can't copy data over for disk %d: %s",
6095 idx, result.fail_msg)
6096 errs.append(result.fail_msg)
6100 self.LogWarning("Some disks failed to copy, aborting")
6102 _RemoveDisks(self, instance, target_node=target_node)
6104 self.cfg.ReleaseDRBDMinors(instance.name)
6105 raise errors.OpExecError("Errors during disk copy: %s" %
6108 instance.primary_node = target_node
6109 self.cfg.Update(instance, feedback_fn)
6111 self.LogInfo("Removing the disks on the original node")
6112 _RemoveDisks(self, instance, target_node=source_node)
6114 # Only start the instance if it's marked as up
6115 if instance.admin_up:
6116 self.LogInfo("Starting instance %s on node %s",
6117 instance.name, target_node)
6119 disks_ok, _ = _AssembleInstanceDisks(self, instance,
6120 ignore_secondaries=True)
6122 _ShutdownInstanceDisks(self, instance)
6123 raise errors.OpExecError("Can't activate the instance's disks")
6125 result = self.rpc.call_instance_start(target_node, instance, None, None)
6126 msg = result.fail_msg
6128 _ShutdownInstanceDisks(self, instance)
6129 raise errors.OpExecError("Could not start instance %s on node %s: %s" %
6130 (instance.name, target_node, msg))
6133 class LUNodeMigrate(LogicalUnit):
6134 """Migrate all instances from a node.
6137 HPATH = "node-migrate"
6138 HTYPE = constants.HTYPE_NODE
6141 def ExpandNames(self):
6142 self.op.node_name = _ExpandNodeName(self.cfg, self.op.node_name)
6144 self.needed_locks = {
6145 locking.LEVEL_NODE: [self.op.node_name],
6148 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_APPEND
6150 # Create tasklets for migrating instances for all instances on this node
6154 for inst in _GetNodePrimaryInstances(self.cfg, self.op.node_name):
6155 logging.debug("Migrating instance %s", inst.name)
6156 names.append(inst.name)
6158 tasklets.append(TLMigrateInstance(self, inst.name, False))
6160 self.tasklets = tasklets
6162 # Declare instance locks
6163 self.needed_locks[locking.LEVEL_INSTANCE] = names
6165 def DeclareLocks(self, level):
6166 if level == locking.LEVEL_NODE:
6167 self._LockInstancesNodes()
6169 def BuildHooksEnv(self):
6172 This runs on the master, the primary and all the secondaries.
6176 "NODE_NAME": self.op.node_name,
6179 nl = [self.cfg.GetMasterNode()]
6181 return (env, nl, nl)
6184 class TLMigrateInstance(Tasklet):
6185 """Tasklet class for instance migration.
6188 @ivar live: whether the migration will be done live or non-live;
6189 this variable is initalized only after CheckPrereq has run
6192 def __init__(self, lu, instance_name, cleanup):
6193 """Initializes this class.
6196 Tasklet.__init__(self, lu)
6199 self.instance_name = instance_name
6200 self.cleanup = cleanup
6201 self.live = False # will be overridden later
6203 def CheckPrereq(self):
6204 """Check prerequisites.
6206 This checks that the instance is in the cluster.
6209 instance_name = _ExpandInstanceName(self.lu.cfg, self.instance_name)
6210 instance = self.cfg.GetInstanceInfo(instance_name)
6211 assert instance is not None
6213 if instance.disk_template != constants.DT_DRBD8:
6214 raise errors.OpPrereqError("Instance's disk layout is not"
6215 " drbd8, cannot migrate.", errors.ECODE_STATE)
6217 secondary_nodes = instance.secondary_nodes
6218 if not secondary_nodes:
6219 raise errors.ConfigurationError("No secondary node but using"
6220 " drbd8 disk template")
6222 i_be = self.cfg.GetClusterInfo().FillBE(instance)
6224 target_node = secondary_nodes[0]
6225 # check memory requirements on the secondary node
6226 _CheckNodeFreeMemory(self.lu, target_node, "migrating instance %s" %
6227 instance.name, i_be[constants.BE_MEMORY],
6228 instance.hypervisor)
6230 # check bridge existance
6231 _CheckInstanceBridgesExist(self.lu, instance, node=target_node)
6233 if not self.cleanup:
6234 _CheckNodeNotDrained(self.lu, target_node)
6235 result = self.rpc.call_instance_migratable(instance.primary_node,
6237 result.Raise("Can't migrate, please use failover",
6238 prereq=True, ecode=errors.ECODE_STATE)
6240 self.instance = instance
6242 if self.lu.op.live is not None and self.lu.op.mode is not None:
6243 raise errors.OpPrereqError("Only one of the 'live' and 'mode'"
6244 " parameters are accepted",
6246 if self.lu.op.live is not None:
6248 self.lu.op.mode = constants.HT_MIGRATION_LIVE
6250 self.lu.op.mode = constants.HT_MIGRATION_NONLIVE
6251 # reset the 'live' parameter to None so that repeated
6252 # invocations of CheckPrereq do not raise an exception
6253 self.lu.op.live = None
6254 elif self.lu.op.mode is None:
6255 # read the default value from the hypervisor
6256 i_hv = self.cfg.GetClusterInfo().FillHV(instance, skip_globals=False)
6257 self.lu.op.mode = i_hv[constants.HV_MIGRATION_MODE]
6259 self.live = self.lu.op.mode == constants.HT_MIGRATION_LIVE
6261 def _WaitUntilSync(self):
6262 """Poll with custom rpc for disk sync.
6264 This uses our own step-based rpc call.
6267 self.feedback_fn("* wait until resync is done")
6271 result = self.rpc.call_drbd_wait_sync(self.all_nodes,
6273 self.instance.disks)
6275 for node, nres in result.items():
6276 nres.Raise("Cannot resync disks on node %s" % node)
6277 node_done, node_percent = nres.payload
6278 all_done = all_done and node_done
6279 if node_percent is not None:
6280 min_percent = min(min_percent, node_percent)
6282 if min_percent < 100:
6283 self.feedback_fn(" - progress: %.1f%%" % min_percent)
6286 def _EnsureSecondary(self, node):
6287 """Demote a node to secondary.
6290 self.feedback_fn("* switching node %s to secondary mode" % node)
6292 for dev in self.instance.disks:
6293 self.cfg.SetDiskID(dev, node)
6295 result = self.rpc.call_blockdev_close(node, self.instance.name,
6296 self.instance.disks)
6297 result.Raise("Cannot change disk to secondary on node %s" % node)
6299 def _GoStandalone(self):
6300 """Disconnect from the network.
6303 self.feedback_fn("* changing into standalone mode")
6304 result = self.rpc.call_drbd_disconnect_net(self.all_nodes, self.nodes_ip,
6305 self.instance.disks)
6306 for node, nres in result.items():
6307 nres.Raise("Cannot disconnect disks node %s" % node)
6309 def _GoReconnect(self, multimaster):
6310 """Reconnect to the network.
6316 msg = "single-master"
6317 self.feedback_fn("* changing disks into %s mode" % msg)
6318 result = self.rpc.call_drbd_attach_net(self.all_nodes, self.nodes_ip,
6319 self.instance.disks,
6320 self.instance.name, multimaster)
6321 for node, nres in result.items():
6322 nres.Raise("Cannot change disks config on node %s" % node)
6324 def _ExecCleanup(self):
6325 """Try to cleanup after a failed migration.
6327 The cleanup is done by:
6328 - check that the instance is running only on one node
6329 (and update the config if needed)
6330 - change disks on its secondary node to secondary
6331 - wait until disks are fully synchronized
6332 - disconnect from the network
6333 - change disks into single-master mode
6334 - wait again until disks are fully synchronized
6337 instance = self.instance
6338 target_node = self.target_node
6339 source_node = self.source_node
6341 # check running on only one node
6342 self.feedback_fn("* checking where the instance actually runs"
6343 " (if this hangs, the hypervisor might be in"
6345 ins_l = self.rpc.call_instance_list(self.all_nodes, [instance.hypervisor])
6346 for node, result in ins_l.items():
6347 result.Raise("Can't contact node %s" % node)
6349 runningon_source = instance.name in ins_l[source_node].payload
6350 runningon_target = instance.name in ins_l[target_node].payload
6352 if runningon_source and runningon_target:
6353 raise errors.OpExecError("Instance seems to be running on two nodes,"
6354 " or the hypervisor is confused. You will have"
6355 " to ensure manually that it runs only on one"
6356 " and restart this operation.")
6358 if not (runningon_source or runningon_target):
6359 raise errors.OpExecError("Instance does not seem to be running at all."
6360 " In this case, it's safer to repair by"
6361 " running 'gnt-instance stop' to ensure disk"
6362 " shutdown, and then restarting it.")
6364 if runningon_target:
6365 # the migration has actually succeeded, we need to update the config
6366 self.feedback_fn("* instance running on secondary node (%s),"
6367 " updating config" % target_node)
6368 instance.primary_node = target_node
6369 self.cfg.Update(instance, self.feedback_fn)
6370 demoted_node = source_node
6372 self.feedback_fn("* instance confirmed to be running on its"
6373 " primary node (%s)" % source_node)
6374 demoted_node = target_node
6376 self._EnsureSecondary(demoted_node)
6378 self._WaitUntilSync()
6379 except errors.OpExecError:
6380 # we ignore here errors, since if the device is standalone, it
6381 # won't be able to sync
6383 self._GoStandalone()
6384 self._GoReconnect(False)
6385 self._WaitUntilSync()
6387 self.feedback_fn("* done")
6389 def _RevertDiskStatus(self):
6390 """Try to revert the disk status after a failed migration.
6393 target_node = self.target_node
6395 self._EnsureSecondary(target_node)
6396 self._GoStandalone()
6397 self._GoReconnect(False)
6398 self._WaitUntilSync()
6399 except errors.OpExecError, err:
6400 self.lu.LogWarning("Migration failed and I can't reconnect the"
6401 " drives: error '%s'\n"
6402 "Please look and recover the instance status" %
6405 def _AbortMigration(self):
6406 """Call the hypervisor code to abort a started migration.
6409 instance = self.instance
6410 target_node = self.target_node
6411 migration_info = self.migration_info
6413 abort_result = self.rpc.call_finalize_migration(target_node,
6417 abort_msg = abort_result.fail_msg
6419 logging.error("Aborting migration failed on target node %s: %s",
6420 target_node, abort_msg)
6421 # Don't raise an exception here, as we stil have to try to revert the
6422 # disk status, even if this step failed.
6424 def _ExecMigration(self):
6425 """Migrate an instance.
6427 The migrate is done by:
6428 - change the disks into dual-master mode
6429 - wait until disks are fully synchronized again
6430 - migrate the instance
6431 - change disks on the new secondary node (the old primary) to secondary
6432 - wait until disks are fully synchronized
6433 - change disks into single-master mode
6436 instance = self.instance
6437 target_node = self.target_node
6438 source_node = self.source_node
6440 self.feedback_fn("* checking disk consistency between source and target")
6441 for dev in instance.disks:
6442 if not _CheckDiskConsistency(self.lu, dev, target_node, False):
6443 raise errors.OpExecError("Disk %s is degraded or not fully"
6444 " synchronized on target node,"
6445 " aborting migrate." % dev.iv_name)
6447 # First get the migration information from the remote node
6448 result = self.rpc.call_migration_info(source_node, instance)
6449 msg = result.fail_msg
6451 log_err = ("Failed fetching source migration information from %s: %s" %
6453 logging.error(log_err)
6454 raise errors.OpExecError(log_err)
6456 self.migration_info = migration_info = result.payload
6458 # Then switch the disks to master/master mode
6459 self._EnsureSecondary(target_node)
6460 self._GoStandalone()
6461 self._GoReconnect(True)
6462 self._WaitUntilSync()
6464 self.feedback_fn("* preparing %s to accept the instance" % target_node)
6465 result = self.rpc.call_accept_instance(target_node,
6468 self.nodes_ip[target_node])
6470 msg = result.fail_msg
6472 logging.error("Instance pre-migration failed, trying to revert"
6473 " disk status: %s", msg)
6474 self.feedback_fn("Pre-migration failed, aborting")
6475 self._AbortMigration()
6476 self._RevertDiskStatus()
6477 raise errors.OpExecError("Could not pre-migrate instance %s: %s" %
6478 (instance.name, msg))
6480 self.feedback_fn("* migrating instance to %s" % target_node)
6482 result = self.rpc.call_instance_migrate(source_node, instance,
6483 self.nodes_ip[target_node],
6485 msg = result.fail_msg
6487 logging.error("Instance migration failed, trying to revert"
6488 " disk status: %s", msg)
6489 self.feedback_fn("Migration failed, aborting")
6490 self._AbortMigration()
6491 self._RevertDiskStatus()
6492 raise errors.OpExecError("Could not migrate instance %s: %s" %
6493 (instance.name, msg))
6496 instance.primary_node = target_node
6497 # distribute new instance config to the other nodes
6498 self.cfg.Update(instance, self.feedback_fn)
6500 result = self.rpc.call_finalize_migration(target_node,
6504 msg = result.fail_msg
6506 logging.error("Instance migration succeeded, but finalization failed:"
6508 raise errors.OpExecError("Could not finalize instance migration: %s" %
6511 self._EnsureSecondary(source_node)
6512 self._WaitUntilSync()
6513 self._GoStandalone()
6514 self._GoReconnect(False)
6515 self._WaitUntilSync()
6517 self.feedback_fn("* done")
6519 def Exec(self, feedback_fn):
6520 """Perform the migration.
6523 feedback_fn("Migrating instance %s" % self.instance.name)
6525 self.feedback_fn = feedback_fn
6527 self.source_node = self.instance.primary_node
6528 self.target_node = self.instance.secondary_nodes[0]
6529 self.all_nodes = [self.source_node, self.target_node]
6531 self.source_node: self.cfg.GetNodeInfo(self.source_node).secondary_ip,
6532 self.target_node: self.cfg.GetNodeInfo(self.target_node).secondary_ip,
6536 return self._ExecCleanup()
6538 return self._ExecMigration()
6541 def _CreateBlockDev(lu, node, instance, device, force_create,
6543 """Create a tree of block devices on a given node.
6545 If this device type has to be created on secondaries, create it and
6548 If not, just recurse to children keeping the same 'force' value.
6550 @param lu: the lu on whose behalf we execute
6551 @param node: the node on which to create the device
6552 @type instance: L{objects.Instance}
6553 @param instance: the instance which owns the device
6554 @type device: L{objects.Disk}
6555 @param device: the device to create
6556 @type force_create: boolean
6557 @param force_create: whether to force creation of this device; this
6558 will be change to True whenever we find a device which has
6559 CreateOnSecondary() attribute
6560 @param info: the extra 'metadata' we should attach to the device
6561 (this will be represented as a LVM tag)
6562 @type force_open: boolean
6563 @param force_open: this parameter will be passes to the
6564 L{backend.BlockdevCreate} function where it specifies
6565 whether we run on primary or not, and it affects both
6566 the child assembly and the device own Open() execution
6569 if device.CreateOnSecondary():
6573 for child in device.children:
6574 _CreateBlockDev(lu, node, instance, child, force_create,
6577 if not force_create:
6580 _CreateSingleBlockDev(lu, node, instance, device, info, force_open)
6583 def _CreateSingleBlockDev(lu, node, instance, device, info, force_open):
6584 """Create a single block device on a given node.
6586 This will not recurse over children of the device, so they must be
6589 @param lu: the lu on whose behalf we execute
6590 @param node: the node on which to create the device
6591 @type instance: L{objects.Instance}
6592 @param instance: the instance which owns the device
6593 @type device: L{objects.Disk}
6594 @param device: the device to create
6595 @param info: the extra 'metadata' we should attach to the device
6596 (this will be represented as a LVM tag)
6597 @type force_open: boolean
6598 @param force_open: this parameter will be passes to the
6599 L{backend.BlockdevCreate} function where it specifies
6600 whether we run on primary or not, and it affects both
6601 the child assembly and the device own Open() execution
6604 lu.cfg.SetDiskID(device, node)
6605 result = lu.rpc.call_blockdev_create(node, device, device.size,
6606 instance.name, force_open, info)
6607 result.Raise("Can't create block device %s on"
6608 " node %s for instance %s" % (device, node, instance.name))
6609 if device.physical_id is None:
6610 device.physical_id = result.payload
6613 def _GenerateUniqueNames(lu, exts):
6614 """Generate a suitable LV name.
6616 This will generate a logical volume name for the given instance.
6621 new_id = lu.cfg.GenerateUniqueID(lu.proc.GetECId())
6622 results.append("%s%s" % (new_id, val))
6626 def _GenerateDRBD8Branch(lu, primary, secondary, size, vgnames, names,
6627 iv_name, p_minor, s_minor):
6628 """Generate a drbd8 device complete with its children.
6631 assert len(vgnames) == len(names) == 2
6632 port = lu.cfg.AllocatePort()
6633 shared_secret = lu.cfg.GenerateDRBDSecret(lu.proc.GetECId())
6634 dev_data = objects.Disk(dev_type=constants.LD_LV, size=size,
6635 logical_id=(vgnames[0], names[0]))
6636 dev_meta = objects.Disk(dev_type=constants.LD_LV, size=128,
6637 logical_id=(vgnames[1], names[1]))
6638 drbd_dev = objects.Disk(dev_type=constants.LD_DRBD8, size=size,
6639 logical_id=(primary, secondary, port,
6642 children=[dev_data, dev_meta],
6647 def _GenerateDiskTemplate(lu, template_name,
6648 instance_name, primary_node,
6649 secondary_nodes, disk_info,
6650 file_storage_dir, file_driver,
6651 base_index, feedback_fn):
6652 """Generate the entire disk layout for a given template type.
6655 #TODO: compute space requirements
6657 vgname = lu.cfg.GetVGName()
6658 disk_count = len(disk_info)
6660 if template_name == constants.DT_DISKLESS:
6662 elif template_name == constants.DT_PLAIN:
6663 if len(secondary_nodes) != 0:
6664 raise errors.ProgrammerError("Wrong template configuration")
6666 names = _GenerateUniqueNames(lu, [".disk%d" % (base_index + i)
6667 for i in range(disk_count)])
6668 for idx, disk in enumerate(disk_info):
6669 disk_index = idx + base_index
6670 vg = disk.get("vg", vgname)
6671 feedback_fn("* disk %i, vg %s, name %s" % (idx, vg, names[idx]))
6672 disk_dev = objects.Disk(dev_type=constants.LD_LV, size=disk["size"],
6673 logical_id=(vg, names[idx]),
6674 iv_name="disk/%d" % disk_index,
6676 disks.append(disk_dev)
6677 elif template_name == constants.DT_DRBD8:
6678 if len(secondary_nodes) != 1:
6679 raise errors.ProgrammerError("Wrong template configuration")
6680 remote_node = secondary_nodes[0]
6681 minors = lu.cfg.AllocateDRBDMinor(
6682 [primary_node, remote_node] * len(disk_info), instance_name)
6685 for lv_prefix in _GenerateUniqueNames(lu, [".disk%d" % (base_index + i)
6686 for i in range(disk_count)]):
6687 names.append(lv_prefix + "_data")
6688 names.append(lv_prefix + "_meta")
6689 for idx, disk in enumerate(disk_info):
6690 disk_index = idx + base_index
6691 data_vg = disk.get("vg", vgname)
6692 meta_vg = disk.get("metavg", data_vg)
6693 disk_dev = _GenerateDRBD8Branch(lu, primary_node, remote_node,
6694 disk["size"], [data_vg, meta_vg],
6695 names[idx*2:idx*2+2],
6696 "disk/%d" % disk_index,
6697 minors[idx*2], minors[idx*2+1])
6698 disk_dev.mode = disk["mode"]
6699 disks.append(disk_dev)
6700 elif template_name == constants.DT_FILE:
6701 if len(secondary_nodes) != 0:
6702 raise errors.ProgrammerError("Wrong template configuration")
6704 opcodes.RequireFileStorage()
6706 for idx, disk in enumerate(disk_info):
6707 disk_index = idx + base_index
6708 disk_dev = objects.Disk(dev_type=constants.LD_FILE, size=disk["size"],
6709 iv_name="disk/%d" % disk_index,
6710 logical_id=(file_driver,
6711 "%s/disk%d" % (file_storage_dir,
6714 disks.append(disk_dev)
6716 raise errors.ProgrammerError("Invalid disk template '%s'" % template_name)
6720 def _GetInstanceInfoText(instance):
6721 """Compute that text that should be added to the disk's metadata.
6724 return "originstname+%s" % instance.name
6727 def _CalcEta(time_taken, written, total_size):
6728 """Calculates the ETA based on size written and total size.
6730 @param time_taken: The time taken so far
6731 @param written: amount written so far
6732 @param total_size: The total size of data to be written
6733 @return: The remaining time in seconds
6736 avg_time = time_taken / float(written)
6737 return (total_size - written) * avg_time
6740 def _WipeDisks(lu, instance):
6741 """Wipes instance disks.
6743 @type lu: L{LogicalUnit}
6744 @param lu: the logical unit on whose behalf we execute
6745 @type instance: L{objects.Instance}
6746 @param instance: the instance whose disks we should create
6747 @return: the success of the wipe
6750 node = instance.primary_node
6752 for device in instance.disks:
6753 lu.cfg.SetDiskID(device, node)
6755 logging.info("Pause sync of instance %s disks", instance.name)
6756 result = lu.rpc.call_blockdev_pause_resume_sync(node, instance.disks, True)
6758 for idx, success in enumerate(result.payload):
6760 logging.warn("pause-sync of instance %s for disks %d failed",
6764 for idx, device in enumerate(instance.disks):
6765 # The wipe size is MIN_WIPE_CHUNK_PERCENT % of the instance disk but
6766 # MAX_WIPE_CHUNK at max
6767 wipe_chunk_size = min(constants.MAX_WIPE_CHUNK, device.size / 100.0 *
6768 constants.MIN_WIPE_CHUNK_PERCENT)
6769 # we _must_ make this an int, otherwise rounding errors will
6771 wipe_chunk_size = int(wipe_chunk_size)
6773 lu.LogInfo("* Wiping disk %d", idx)
6774 logging.info("Wiping disk %d for instance %s, node %s using"
6775 " chunk size %s", idx, instance.name, node, wipe_chunk_size)
6780 start_time = time.time()
6782 while offset < size:
6783 wipe_size = min(wipe_chunk_size, size - offset)
6784 logging.debug("Wiping disk %d, offset %s, chunk %s",
6785 idx, offset, wipe_size)
6786 result = lu.rpc.call_blockdev_wipe(node, device, offset, wipe_size)
6787 result.Raise("Could not wipe disk %d at offset %d for size %d" %
6788 (idx, offset, wipe_size))
6791 if now - last_output >= 60:
6792 eta = _CalcEta(now - start_time, offset, size)
6793 lu.LogInfo(" - done: %.1f%% ETA: %s" %
6794 (offset / float(size) * 100, utils.FormatSeconds(eta)))
6797 logging.info("Resume sync of instance %s disks", instance.name)
6799 result = lu.rpc.call_blockdev_pause_resume_sync(node, instance.disks, False)
6801 for idx, success in enumerate(result.payload):
6803 lu.LogWarning("Warning: Resume sync of disk %d failed. Please have a"
6804 " look at the status and troubleshoot the issue.", idx)
6805 logging.warn("resume-sync of instance %s for disks %d failed",
6809 def _CreateDisks(lu, instance, to_skip=None, target_node=None):
6810 """Create all disks for an instance.
6812 This abstracts away some work from AddInstance.
6814 @type lu: L{LogicalUnit}
6815 @param lu: the logical unit on whose behalf we execute
6816 @type instance: L{objects.Instance}
6817 @param instance: the instance whose disks we should create
6819 @param to_skip: list of indices to skip
6820 @type target_node: string
6821 @param target_node: if passed, overrides the target node for creation
6823 @return: the success of the creation
6826 info = _GetInstanceInfoText(instance)
6827 if target_node is None:
6828 pnode = instance.primary_node
6829 all_nodes = instance.all_nodes
6834 if instance.disk_template == constants.DT_FILE:
6835 file_storage_dir = os.path.dirname(instance.disks[0].logical_id[1])
6836 result = lu.rpc.call_file_storage_dir_create(pnode, file_storage_dir)
6838 result.Raise("Failed to create directory '%s' on"
6839 " node %s" % (file_storage_dir, pnode))
6841 # Note: this needs to be kept in sync with adding of disks in
6842 # LUInstanceSetParams
6843 for idx, device in enumerate(instance.disks):
6844 if to_skip and idx in to_skip:
6846 logging.info("Creating volume %s for instance %s",
6847 device.iv_name, instance.name)
6849 for node in all_nodes:
6850 f_create = node == pnode
6851 _CreateBlockDev(lu, node, instance, device, f_create, info, f_create)
6854 def _RemoveDisks(lu, instance, target_node=None):
6855 """Remove all disks for an instance.
6857 This abstracts away some work from `AddInstance()` and
6858 `RemoveInstance()`. Note that in case some of the devices couldn't
6859 be removed, the removal will continue with the other ones (compare
6860 with `_CreateDisks()`).
6862 @type lu: L{LogicalUnit}
6863 @param lu: the logical unit on whose behalf we execute
6864 @type instance: L{objects.Instance}
6865 @param instance: the instance whose disks we should remove
6866 @type target_node: string
6867 @param target_node: used to override the node on which to remove the disks
6869 @return: the success of the removal
6872 logging.info("Removing block devices for instance %s", instance.name)
6875 for device in instance.disks:
6877 edata = [(target_node, device)]
6879 edata = device.ComputeNodeTree(instance.primary_node)
6880 for node, disk in edata:
6881 lu.cfg.SetDiskID(disk, node)
6882 msg = lu.rpc.call_blockdev_remove(node, disk).fail_msg
6884 lu.LogWarning("Could not remove block device %s on node %s,"
6885 " continuing anyway: %s", device.iv_name, node, msg)
6888 if instance.disk_template == constants.DT_FILE:
6889 file_storage_dir = os.path.dirname(instance.disks[0].logical_id[1])
6893 tgt = instance.primary_node
6894 result = lu.rpc.call_file_storage_dir_remove(tgt, file_storage_dir)
6896 lu.LogWarning("Could not remove directory '%s' on node %s: %s",
6897 file_storage_dir, instance.primary_node, result.fail_msg)
6903 def _ComputeDiskSizePerVG(disk_template, disks):
6904 """Compute disk size requirements in the volume group
6907 def _compute(disks, payload):
6908 """Universal algorithm
6913 vgs[disk["vg"]] = vgs.get("vg", 0) + disk["size"] + payload
6917 # Required free disk space as a function of disk and swap space
6919 constants.DT_DISKLESS: {},
6920 constants.DT_PLAIN: _compute(disks, 0),
6921 # 128 MB are added for drbd metadata for each disk
6922 constants.DT_DRBD8: _compute(disks, 128),
6923 constants.DT_FILE: {},
6926 if disk_template not in req_size_dict:
6927 raise errors.ProgrammerError("Disk template '%s' size requirement"
6928 " is unknown" % disk_template)
6930 return req_size_dict[disk_template]
6933 def _ComputeDiskSize(disk_template, disks):
6934 """Compute disk size requirements in the volume group
6937 # Required free disk space as a function of disk and swap space
6939 constants.DT_DISKLESS: None,
6940 constants.DT_PLAIN: sum(d["size"] for d in disks),
6941 # 128 MB are added for drbd metadata for each disk
6942 constants.DT_DRBD8: sum(d["size"] + 128 for d in disks),
6943 constants.DT_FILE: None,
6946 if disk_template not in req_size_dict:
6947 raise errors.ProgrammerError("Disk template '%s' size requirement"
6948 " is unknown" % disk_template)
6950 return req_size_dict[disk_template]
6953 def _FilterVmNodes(lu, nodenames):
6954 """Filters out non-vm_capable nodes from a list.
6956 @type lu: L{LogicalUnit}
6957 @param lu: the logical unit for which we check
6958 @type nodenames: list
6959 @param nodenames: the list of nodes on which we should check
6961 @return: the list of vm-capable nodes
6964 vm_nodes = frozenset(lu.cfg.GetNonVmCapableNodeList())
6965 return [name for name in nodenames if name not in vm_nodes]
6968 def _CheckHVParams(lu, nodenames, hvname, hvparams):
6969 """Hypervisor parameter validation.
6971 This function abstract the hypervisor parameter validation to be
6972 used in both instance create and instance modify.
6974 @type lu: L{LogicalUnit}
6975 @param lu: the logical unit for which we check
6976 @type nodenames: list
6977 @param nodenames: the list of nodes on which we should check
6978 @type hvname: string
6979 @param hvname: the name of the hypervisor we should use
6980 @type hvparams: dict
6981 @param hvparams: the parameters which we need to check
6982 @raise errors.OpPrereqError: if the parameters are not valid
6985 nodenames = _FilterVmNodes(lu, nodenames)
6986 hvinfo = lu.rpc.call_hypervisor_validate_params(nodenames,
6989 for node in nodenames:
6993 info.Raise("Hypervisor parameter validation failed on node %s" % node)
6996 def _CheckOSParams(lu, required, nodenames, osname, osparams):
6997 """OS parameters validation.
6999 @type lu: L{LogicalUnit}
7000 @param lu: the logical unit for which we check
7001 @type required: boolean
7002 @param required: whether the validation should fail if the OS is not
7004 @type nodenames: list
7005 @param nodenames: the list of nodes on which we should check
7006 @type osname: string
7007 @param osname: the name of the hypervisor we should use
7008 @type osparams: dict
7009 @param osparams: the parameters which we need to check
7010 @raise errors.OpPrereqError: if the parameters are not valid
7013 nodenames = _FilterVmNodes(lu, nodenames)
7014 result = lu.rpc.call_os_validate(required, nodenames, osname,
7015 [constants.OS_VALIDATE_PARAMETERS],
7017 for node, nres in result.items():
7018 # we don't check for offline cases since this should be run only
7019 # against the master node and/or an instance's nodes
7020 nres.Raise("OS Parameters validation failed on node %s" % node)
7021 if not nres.payload:
7022 lu.LogInfo("OS %s not found on node %s, validation skipped",
7026 class LUInstanceCreate(LogicalUnit):
7027 """Create an instance.
7030 HPATH = "instance-add"
7031 HTYPE = constants.HTYPE_INSTANCE
7034 def CheckArguments(self):
7038 # do not require name_check to ease forward/backward compatibility
7040 if self.op.no_install and self.op.start:
7041 self.LogInfo("No-installation mode selected, disabling startup")
7042 self.op.start = False
7043 # validate/normalize the instance name
7044 self.op.instance_name = \
7045 netutils.Hostname.GetNormalizedName(self.op.instance_name)
7047 if self.op.ip_check and not self.op.name_check:
7048 # TODO: make the ip check more flexible and not depend on the name check
7049 raise errors.OpPrereqError("Cannot do ip check without a name check",
7052 # check nics' parameter names
7053 for nic in self.op.nics:
7054 utils.ForceDictType(nic, constants.INIC_PARAMS_TYPES)
7056 # check disks. parameter names and consistent adopt/no-adopt strategy
7057 has_adopt = has_no_adopt = False
7058 for disk in self.op.disks:
7059 utils.ForceDictType(disk, constants.IDISK_PARAMS_TYPES)
7064 if has_adopt and has_no_adopt:
7065 raise errors.OpPrereqError("Either all disks are adopted or none is",
7068 if self.op.disk_template not in constants.DTS_MAY_ADOPT:
7069 raise errors.OpPrereqError("Disk adoption is not supported for the"
7070 " '%s' disk template" %
7071 self.op.disk_template,
7073 if self.op.iallocator is not None:
7074 raise errors.OpPrereqError("Disk adoption not allowed with an"
7075 " iallocator script", errors.ECODE_INVAL)
7076 if self.op.mode == constants.INSTANCE_IMPORT:
7077 raise errors.OpPrereqError("Disk adoption not allowed for"
7078 " instance import", errors.ECODE_INVAL)
7080 self.adopt_disks = has_adopt
7082 # instance name verification
7083 if self.op.name_check:
7084 self.hostname1 = netutils.GetHostname(name=self.op.instance_name)
7085 self.op.instance_name = self.hostname1.name
7086 # used in CheckPrereq for ip ping check
7087 self.check_ip = self.hostname1.ip
7089 self.check_ip = None
7091 # file storage checks
7092 if (self.op.file_driver and
7093 not self.op.file_driver in constants.FILE_DRIVER):
7094 raise errors.OpPrereqError("Invalid file driver name '%s'" %
7095 self.op.file_driver, errors.ECODE_INVAL)
7097 if self.op.file_storage_dir and os.path.isabs(self.op.file_storage_dir):
7098 raise errors.OpPrereqError("File storage directory path not absolute",
7101 ### Node/iallocator related checks
7102 _CheckIAllocatorOrNode(self, "iallocator", "pnode")
7104 if self.op.pnode is not None:
7105 if self.op.disk_template in constants.DTS_NET_MIRROR:
7106 if self.op.snode is None:
7107 raise errors.OpPrereqError("The networked disk templates need"
7108 " a mirror node", errors.ECODE_INVAL)
7110 self.LogWarning("Secondary node will be ignored on non-mirrored disk"
7112 self.op.snode = None
7114 self._cds = _GetClusterDomainSecret()
7116 if self.op.mode == constants.INSTANCE_IMPORT:
7117 # On import force_variant must be True, because if we forced it at
7118 # initial install, our only chance when importing it back is that it
7120 self.op.force_variant = True
7122 if self.op.no_install:
7123 self.LogInfo("No-installation mode has no effect during import")
7125 elif self.op.mode == constants.INSTANCE_CREATE:
7126 if self.op.os_type is None:
7127 raise errors.OpPrereqError("No guest OS specified",
7129 if self.op.os_type in self.cfg.GetClusterInfo().blacklisted_os:
7130 raise errors.OpPrereqError("Guest OS '%s' is not allowed for"
7131 " installation" % self.op.os_type,
7133 if self.op.disk_template is None:
7134 raise errors.OpPrereqError("No disk template specified",
7137 elif self.op.mode == constants.INSTANCE_REMOTE_IMPORT:
7138 # Check handshake to ensure both clusters have the same domain secret
7139 src_handshake = self.op.source_handshake
7140 if not src_handshake:
7141 raise errors.OpPrereqError("Missing source handshake",
7144 errmsg = masterd.instance.CheckRemoteExportHandshake(self._cds,
7147 raise errors.OpPrereqError("Invalid handshake: %s" % errmsg,
7150 # Load and check source CA
7151 self.source_x509_ca_pem = self.op.source_x509_ca
7152 if not self.source_x509_ca_pem:
7153 raise errors.OpPrereqError("Missing source X509 CA",
7157 (cert, _) = utils.LoadSignedX509Certificate(self.source_x509_ca_pem,
7159 except OpenSSL.crypto.Error, err:
7160 raise errors.OpPrereqError("Unable to load source X509 CA (%s)" %
7161 (err, ), errors.ECODE_INVAL)
7163 (errcode, msg) = utils.VerifyX509Certificate(cert, None, None)
7164 if errcode is not None:
7165 raise errors.OpPrereqError("Invalid source X509 CA (%s)" % (msg, ),
7168 self.source_x509_ca = cert
7170 src_instance_name = self.op.source_instance_name
7171 if not src_instance_name:
7172 raise errors.OpPrereqError("Missing source instance name",
7175 self.source_instance_name = \
7176 netutils.GetHostname(name=src_instance_name).name
7179 raise errors.OpPrereqError("Invalid instance creation mode %r" %
7180 self.op.mode, errors.ECODE_INVAL)
7182 def ExpandNames(self):
7183 """ExpandNames for CreateInstance.
7185 Figure out the right locks for instance creation.
7188 self.needed_locks = {}
7190 instance_name = self.op.instance_name
7191 # this is just a preventive check, but someone might still add this
7192 # instance in the meantime, and creation will fail at lock-add time
7193 if instance_name in self.cfg.GetInstanceList():
7194 raise errors.OpPrereqError("Instance '%s' is already in the cluster" %
7195 instance_name, errors.ECODE_EXISTS)
7197 self.add_locks[locking.LEVEL_INSTANCE] = instance_name
7199 if self.op.iallocator:
7200 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
7202 self.op.pnode = _ExpandNodeName(self.cfg, self.op.pnode)
7203 nodelist = [self.op.pnode]
7204 if self.op.snode is not None:
7205 self.op.snode = _ExpandNodeName(self.cfg, self.op.snode)
7206 nodelist.append(self.op.snode)
7207 self.needed_locks[locking.LEVEL_NODE] = nodelist
7209 # in case of import lock the source node too
7210 if self.op.mode == constants.INSTANCE_IMPORT:
7211 src_node = self.op.src_node
7212 src_path = self.op.src_path
7214 if src_path is None:
7215 self.op.src_path = src_path = self.op.instance_name
7217 if src_node is None:
7218 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
7219 self.op.src_node = None
7220 if os.path.isabs(src_path):
7221 raise errors.OpPrereqError("Importing an instance from an absolute"
7222 " path requires a source node option.",
7225 self.op.src_node = src_node = _ExpandNodeName(self.cfg, src_node)
7226 if self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET:
7227 self.needed_locks[locking.LEVEL_NODE].append(src_node)
7228 if not os.path.isabs(src_path):
7229 self.op.src_path = src_path = \
7230 utils.PathJoin(constants.EXPORT_DIR, src_path)
7232 def _RunAllocator(self):
7233 """Run the allocator based on input opcode.
7236 nics = [n.ToDict() for n in self.nics]
7237 ial = IAllocator(self.cfg, self.rpc,
7238 mode=constants.IALLOCATOR_MODE_ALLOC,
7239 name=self.op.instance_name,
7240 disk_template=self.op.disk_template,
7243 vcpus=self.be_full[constants.BE_VCPUS],
7244 mem_size=self.be_full[constants.BE_MEMORY],
7247 hypervisor=self.op.hypervisor,
7250 ial.Run(self.op.iallocator)
7253 raise errors.OpPrereqError("Can't compute nodes using"
7254 " iallocator '%s': %s" %
7255 (self.op.iallocator, ial.info),
7257 if len(ial.result) != ial.required_nodes:
7258 raise errors.OpPrereqError("iallocator '%s' returned invalid number"
7259 " of nodes (%s), required %s" %
7260 (self.op.iallocator, len(ial.result),
7261 ial.required_nodes), errors.ECODE_FAULT)
7262 self.op.pnode = ial.result[0]
7263 self.LogInfo("Selected nodes for instance %s via iallocator %s: %s",
7264 self.op.instance_name, self.op.iallocator,
7265 utils.CommaJoin(ial.result))
7266 if ial.required_nodes == 2:
7267 self.op.snode = ial.result[1]
7269 def BuildHooksEnv(self):
7272 This runs on master, primary and secondary nodes of the instance.
7276 "ADD_MODE": self.op.mode,
7278 if self.op.mode == constants.INSTANCE_IMPORT:
7279 env["SRC_NODE"] = self.op.src_node
7280 env["SRC_PATH"] = self.op.src_path
7281 env["SRC_IMAGES"] = self.src_images
7283 env.update(_BuildInstanceHookEnv(
7284 name=self.op.instance_name,
7285 primary_node=self.op.pnode,
7286 secondary_nodes=self.secondaries,
7287 status=self.op.start,
7288 os_type=self.op.os_type,
7289 memory=self.be_full[constants.BE_MEMORY],
7290 vcpus=self.be_full[constants.BE_VCPUS],
7291 nics=_NICListToTuple(self, self.nics),
7292 disk_template=self.op.disk_template,
7293 disks=[(d["size"], d["mode"]) for d in self.disks],
7296 hypervisor_name=self.op.hypervisor,
7299 nl = ([self.cfg.GetMasterNode(), self.op.pnode] +
7303 def _ReadExportInfo(self):
7304 """Reads the export information from disk.
7306 It will override the opcode source node and path with the actual
7307 information, if these two were not specified before.
7309 @return: the export information
7312 assert self.op.mode == constants.INSTANCE_IMPORT
7314 src_node = self.op.src_node
7315 src_path = self.op.src_path
7317 if src_node is None:
7318 locked_nodes = self.acquired_locks[locking.LEVEL_NODE]
7319 exp_list = self.rpc.call_export_list(locked_nodes)
7321 for node in exp_list:
7322 if exp_list[node].fail_msg:
7324 if src_path in exp_list[node].payload:
7326 self.op.src_node = src_node = node
7327 self.op.src_path = src_path = utils.PathJoin(constants.EXPORT_DIR,
7331 raise errors.OpPrereqError("No export found for relative path %s" %
7332 src_path, errors.ECODE_INVAL)
7334 _CheckNodeOnline(self, src_node)
7335 result = self.rpc.call_export_info(src_node, src_path)
7336 result.Raise("No export or invalid export found in dir %s" % src_path)
7338 export_info = objects.SerializableConfigParser.Loads(str(result.payload))
7339 if not export_info.has_section(constants.INISECT_EXP):
7340 raise errors.ProgrammerError("Corrupted export config",
7341 errors.ECODE_ENVIRON)
7343 ei_version = export_info.get(constants.INISECT_EXP, "version")
7344 if (int(ei_version) != constants.EXPORT_VERSION):
7345 raise errors.OpPrereqError("Wrong export version %s (wanted %d)" %
7346 (ei_version, constants.EXPORT_VERSION),
7347 errors.ECODE_ENVIRON)
7350 def _ReadExportParams(self, einfo):
7351 """Use export parameters as defaults.
7353 In case the opcode doesn't specify (as in override) some instance
7354 parameters, then try to use them from the export information, if
7358 self.op.os_type = einfo.get(constants.INISECT_EXP, "os")
7360 if self.op.disk_template is None:
7361 if einfo.has_option(constants.INISECT_INS, "disk_template"):
7362 self.op.disk_template = einfo.get(constants.INISECT_INS,
7365 raise errors.OpPrereqError("No disk template specified and the export"
7366 " is missing the disk_template information",
7369 if not self.op.disks:
7370 if einfo.has_option(constants.INISECT_INS, "disk_count"):
7372 # TODO: import the disk iv_name too
7373 for idx in range(einfo.getint(constants.INISECT_INS, "disk_count")):
7374 disk_sz = einfo.getint(constants.INISECT_INS, "disk%d_size" % idx)
7375 disks.append({"size": disk_sz})
7376 self.op.disks = disks
7378 raise errors.OpPrereqError("No disk info specified and the export"
7379 " is missing the disk information",
7382 if (not self.op.nics and
7383 einfo.has_option(constants.INISECT_INS, "nic_count")):
7385 for idx in range(einfo.getint(constants.INISECT_INS, "nic_count")):
7387 for name in list(constants.NICS_PARAMETERS) + ["ip", "mac"]:
7388 v = einfo.get(constants.INISECT_INS, "nic%d_%s" % (idx, name))
7393 if (self.op.hypervisor is None and
7394 einfo.has_option(constants.INISECT_INS, "hypervisor")):
7395 self.op.hypervisor = einfo.get(constants.INISECT_INS, "hypervisor")
7396 if einfo.has_section(constants.INISECT_HYP):
7397 # use the export parameters but do not override the ones
7398 # specified by the user
7399 for name, value in einfo.items(constants.INISECT_HYP):
7400 if name not in self.op.hvparams:
7401 self.op.hvparams[name] = value
7403 if einfo.has_section(constants.INISECT_BEP):
7404 # use the parameters, without overriding
7405 for name, value in einfo.items(constants.INISECT_BEP):
7406 if name not in self.op.beparams:
7407 self.op.beparams[name] = value
7409 # try to read the parameters old style, from the main section
7410 for name in constants.BES_PARAMETERS:
7411 if (name not in self.op.beparams and
7412 einfo.has_option(constants.INISECT_INS, name)):
7413 self.op.beparams[name] = einfo.get(constants.INISECT_INS, name)
7415 if einfo.has_section(constants.INISECT_OSP):
7416 # use the parameters, without overriding
7417 for name, value in einfo.items(constants.INISECT_OSP):
7418 if name not in self.op.osparams:
7419 self.op.osparams[name] = value
7421 def _RevertToDefaults(self, cluster):
7422 """Revert the instance parameters to the default values.
7426 hv_defs = cluster.SimpleFillHV(self.op.hypervisor, self.op.os_type, {})
7427 for name in self.op.hvparams.keys():
7428 if name in hv_defs and hv_defs[name] == self.op.hvparams[name]:
7429 del self.op.hvparams[name]
7431 be_defs = cluster.SimpleFillBE({})
7432 for name in self.op.beparams.keys():
7433 if name in be_defs and be_defs[name] == self.op.beparams[name]:
7434 del self.op.beparams[name]
7436 nic_defs = cluster.SimpleFillNIC({})
7437 for nic in self.op.nics:
7438 for name in constants.NICS_PARAMETERS:
7439 if name in nic and name in nic_defs and nic[name] == nic_defs[name]:
7442 os_defs = cluster.SimpleFillOS(self.op.os_type, {})
7443 for name in self.op.osparams.keys():
7444 if name in os_defs and os_defs[name] == self.op.osparams[name]:
7445 del self.op.osparams[name]
7447 def CheckPrereq(self):
7448 """Check prerequisites.
7451 if self.op.mode == constants.INSTANCE_IMPORT:
7452 export_info = self._ReadExportInfo()
7453 self._ReadExportParams(export_info)
7455 if (not self.cfg.GetVGName() and
7456 self.op.disk_template not in constants.DTS_NOT_LVM):
7457 raise errors.OpPrereqError("Cluster does not support lvm-based"
7458 " instances", errors.ECODE_STATE)
7460 if self.op.hypervisor is None:
7461 self.op.hypervisor = self.cfg.GetHypervisorType()
7463 cluster = self.cfg.GetClusterInfo()
7464 enabled_hvs = cluster.enabled_hypervisors
7465 if self.op.hypervisor not in enabled_hvs:
7466 raise errors.OpPrereqError("Selected hypervisor (%s) not enabled in the"
7467 " cluster (%s)" % (self.op.hypervisor,
7468 ",".join(enabled_hvs)),
7471 # check hypervisor parameter syntax (locally)
7472 utils.ForceDictType(self.op.hvparams, constants.HVS_PARAMETER_TYPES)
7473 filled_hvp = cluster.SimpleFillHV(self.op.hypervisor, self.op.os_type,
7475 hv_type = hypervisor.GetHypervisor(self.op.hypervisor)
7476 hv_type.CheckParameterSyntax(filled_hvp)
7477 self.hv_full = filled_hvp
7478 # check that we don't specify global parameters on an instance
7479 _CheckGlobalHvParams(self.op.hvparams)
7481 # fill and remember the beparams dict
7482 utils.ForceDictType(self.op.beparams, constants.BES_PARAMETER_TYPES)
7483 self.be_full = cluster.SimpleFillBE(self.op.beparams)
7485 # build os parameters
7486 self.os_full = cluster.SimpleFillOS(self.op.os_type, self.op.osparams)
7488 # now that hvp/bep are in final format, let's reset to defaults,
7490 if self.op.identify_defaults:
7491 self._RevertToDefaults(cluster)
7495 for idx, nic in enumerate(self.op.nics):
7496 nic_mode_req = nic.get("mode", None)
7497 nic_mode = nic_mode_req
7498 if nic_mode is None:
7499 nic_mode = cluster.nicparams[constants.PP_DEFAULT][constants.NIC_MODE]
7501 # in routed mode, for the first nic, the default ip is 'auto'
7502 if nic_mode == constants.NIC_MODE_ROUTED and idx == 0:
7503 default_ip_mode = constants.VALUE_AUTO
7505 default_ip_mode = constants.VALUE_NONE
7507 # ip validity checks
7508 ip = nic.get("ip", default_ip_mode)
7509 if ip is None or ip.lower() == constants.VALUE_NONE:
7511 elif ip.lower() == constants.VALUE_AUTO:
7512 if not self.op.name_check:
7513 raise errors.OpPrereqError("IP address set to auto but name checks"
7514 " have been skipped",
7516 nic_ip = self.hostname1.ip
7518 if not netutils.IPAddress.IsValid(ip):
7519 raise errors.OpPrereqError("Invalid IP address '%s'" % ip,
7523 # TODO: check the ip address for uniqueness
7524 if nic_mode == constants.NIC_MODE_ROUTED and not nic_ip:
7525 raise errors.OpPrereqError("Routed nic mode requires an ip address",
7528 # MAC address verification
7529 mac = nic.get("mac", constants.VALUE_AUTO)
7530 if mac not in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
7531 mac = utils.NormalizeAndValidateMac(mac)
7534 self.cfg.ReserveMAC(mac, self.proc.GetECId())
7535 except errors.ReservationError:
7536 raise errors.OpPrereqError("MAC address %s already in use"
7537 " in cluster" % mac,
7538 errors.ECODE_NOTUNIQUE)
7540 # bridge verification
7541 bridge = nic.get("bridge", None)
7542 link = nic.get("link", None)
7544 raise errors.OpPrereqError("Cannot pass 'bridge' and 'link'"
7545 " at the same time", errors.ECODE_INVAL)
7546 elif bridge and nic_mode == constants.NIC_MODE_ROUTED:
7547 raise errors.OpPrereqError("Cannot pass 'bridge' on a routed nic",
7554 nicparams[constants.NIC_MODE] = nic_mode_req
7556 nicparams[constants.NIC_LINK] = link
7558 check_params = cluster.SimpleFillNIC(nicparams)
7559 objects.NIC.CheckParameterSyntax(check_params)
7560 self.nics.append(objects.NIC(mac=mac, ip=nic_ip, nicparams=nicparams))
7562 # disk checks/pre-build
7564 for disk in self.op.disks:
7565 mode = disk.get("mode", constants.DISK_RDWR)
7566 if mode not in constants.DISK_ACCESS_SET:
7567 raise errors.OpPrereqError("Invalid disk access mode '%s'" %
7568 mode, errors.ECODE_INVAL)
7569 size = disk.get("size", None)
7571 raise errors.OpPrereqError("Missing disk size", errors.ECODE_INVAL)
7574 except (TypeError, ValueError):
7575 raise errors.OpPrereqError("Invalid disk size '%s'" % size,
7577 data_vg = disk.get("vg", self.cfg.GetVGName())
7578 meta_vg = disk.get("metavg", data_vg)
7579 new_disk = {"size": size, "mode": mode, "vg": data_vg, "metavg": meta_vg}
7581 new_disk["adopt"] = disk["adopt"]
7582 self.disks.append(new_disk)
7584 if self.op.mode == constants.INSTANCE_IMPORT:
7586 # Check that the new instance doesn't have less disks than the export
7587 instance_disks = len(self.disks)
7588 export_disks = export_info.getint(constants.INISECT_INS, 'disk_count')
7589 if instance_disks < export_disks:
7590 raise errors.OpPrereqError("Not enough disks to import."
7591 " (instance: %d, export: %d)" %
7592 (instance_disks, export_disks),
7596 for idx in range(export_disks):
7597 option = 'disk%d_dump' % idx
7598 if export_info.has_option(constants.INISECT_INS, option):
7599 # FIXME: are the old os-es, disk sizes, etc. useful?
7600 export_name = export_info.get(constants.INISECT_INS, option)
7601 image = utils.PathJoin(self.op.src_path, export_name)
7602 disk_images.append(image)
7604 disk_images.append(False)
7606 self.src_images = disk_images
7608 old_name = export_info.get(constants.INISECT_INS, 'name')
7610 exp_nic_count = export_info.getint(constants.INISECT_INS, 'nic_count')
7611 except (TypeError, ValueError), err:
7612 raise errors.OpPrereqError("Invalid export file, nic_count is not"
7613 " an integer: %s" % str(err),
7615 if self.op.instance_name == old_name:
7616 for idx, nic in enumerate(self.nics):
7617 if nic.mac == constants.VALUE_AUTO and exp_nic_count >= idx:
7618 nic_mac_ini = 'nic%d_mac' % idx
7619 nic.mac = export_info.get(constants.INISECT_INS, nic_mac_ini)
7621 # ENDIF: self.op.mode == constants.INSTANCE_IMPORT
7623 # ip ping checks (we use the same ip that was resolved in ExpandNames)
7624 if self.op.ip_check:
7625 if netutils.TcpPing(self.check_ip, constants.DEFAULT_NODED_PORT):
7626 raise errors.OpPrereqError("IP %s of instance %s already in use" %
7627 (self.check_ip, self.op.instance_name),
7628 errors.ECODE_NOTUNIQUE)
7630 #### mac address generation
7631 # By generating here the mac address both the allocator and the hooks get
7632 # the real final mac address rather than the 'auto' or 'generate' value.
7633 # There is a race condition between the generation and the instance object
7634 # creation, which means that we know the mac is valid now, but we're not
7635 # sure it will be when we actually add the instance. If things go bad
7636 # adding the instance will abort because of a duplicate mac, and the
7637 # creation job will fail.
7638 for nic in self.nics:
7639 if nic.mac in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
7640 nic.mac = self.cfg.GenerateMAC(self.proc.GetECId())
7644 if self.op.iallocator is not None:
7645 self._RunAllocator()
7647 #### node related checks
7649 # check primary node
7650 self.pnode = pnode = self.cfg.GetNodeInfo(self.op.pnode)
7651 assert self.pnode is not None, \
7652 "Cannot retrieve locked node %s" % self.op.pnode
7654 raise errors.OpPrereqError("Cannot use offline primary node '%s'" %
7655 pnode.name, errors.ECODE_STATE)
7657 raise errors.OpPrereqError("Cannot use drained primary node '%s'" %
7658 pnode.name, errors.ECODE_STATE)
7659 if not pnode.vm_capable:
7660 raise errors.OpPrereqError("Cannot use non-vm_capable primary node"
7661 " '%s'" % pnode.name, errors.ECODE_STATE)
7663 self.secondaries = []
7665 # mirror node verification
7666 if self.op.disk_template in constants.DTS_NET_MIRROR:
7667 if self.op.snode == pnode.name:
7668 raise errors.OpPrereqError("The secondary node cannot be the"
7669 " primary node.", errors.ECODE_INVAL)
7670 _CheckNodeOnline(self, self.op.snode)
7671 _CheckNodeNotDrained(self, self.op.snode)
7672 _CheckNodeVmCapable(self, self.op.snode)
7673 self.secondaries.append(self.op.snode)
7675 nodenames = [pnode.name] + self.secondaries
7677 if not self.adopt_disks:
7678 # Check lv size requirements, if not adopting
7679 req_sizes = _ComputeDiskSizePerVG(self.op.disk_template, self.disks)
7680 _CheckNodesFreeDiskPerVG(self, nodenames, req_sizes)
7682 else: # instead, we must check the adoption data
7683 all_lvs = set([i["vg"] + "/" + i["adopt"] for i in self.disks])
7684 if len(all_lvs) != len(self.disks):
7685 raise errors.OpPrereqError("Duplicate volume names given for adoption",
7687 for lv_name in all_lvs:
7689 # FIXME: lv_name here is "vg/lv" need to ensure that other calls
7690 # to ReserveLV uses the same syntax
7691 self.cfg.ReserveLV(lv_name, self.proc.GetECId())
7692 except errors.ReservationError:
7693 raise errors.OpPrereqError("LV named %s used by another instance" %
7694 lv_name, errors.ECODE_NOTUNIQUE)
7696 vg_names = self.rpc.call_vg_list([pnode.name])[pnode.name]
7697 vg_names.Raise("Cannot get VG information from node %s" % pnode.name)
7699 node_lvs = self.rpc.call_lv_list([pnode.name],
7700 vg_names.payload.keys())[pnode.name]
7701 node_lvs.Raise("Cannot get LV information from node %s" % pnode.name)
7702 node_lvs = node_lvs.payload
7704 delta = all_lvs.difference(node_lvs.keys())
7706 raise errors.OpPrereqError("Missing logical volume(s): %s" %
7707 utils.CommaJoin(delta),
7709 online_lvs = [lv for lv in all_lvs if node_lvs[lv][2]]
7711 raise errors.OpPrereqError("Online logical volumes found, cannot"
7712 " adopt: %s" % utils.CommaJoin(online_lvs),
7714 # update the size of disk based on what is found
7715 for dsk in self.disks:
7716 dsk["size"] = int(float(node_lvs[dsk["vg"] + "/" + dsk["adopt"]][0]))
7718 _CheckHVParams(self, nodenames, self.op.hypervisor, self.op.hvparams)
7720 _CheckNodeHasOS(self, pnode.name, self.op.os_type, self.op.force_variant)
7721 # check OS parameters (remotely)
7722 _CheckOSParams(self, True, nodenames, self.op.os_type, self.os_full)
7724 _CheckNicsBridgesExist(self, self.nics, self.pnode.name)
7726 # memory check on primary node
7728 _CheckNodeFreeMemory(self, self.pnode.name,
7729 "creating instance %s" % self.op.instance_name,
7730 self.be_full[constants.BE_MEMORY],
7733 self.dry_run_result = list(nodenames)
7735 def Exec(self, feedback_fn):
7736 """Create and add the instance to the cluster.
7739 instance = self.op.instance_name
7740 pnode_name = self.pnode.name
7742 ht_kind = self.op.hypervisor
7743 if ht_kind in constants.HTS_REQ_PORT:
7744 network_port = self.cfg.AllocatePort()
7748 if constants.ENABLE_FILE_STORAGE:
7749 # this is needed because os.path.join does not accept None arguments
7750 if self.op.file_storage_dir is None:
7751 string_file_storage_dir = ""
7753 string_file_storage_dir = self.op.file_storage_dir
7755 # build the full file storage dir path
7756 file_storage_dir = utils.PathJoin(self.cfg.GetFileStorageDir(),
7757 string_file_storage_dir, instance)
7759 file_storage_dir = ""
7761 disks = _GenerateDiskTemplate(self,
7762 self.op.disk_template,
7763 instance, pnode_name,
7767 self.op.file_driver,
7771 iobj = objects.Instance(name=instance, os=self.op.os_type,
7772 primary_node=pnode_name,
7773 nics=self.nics, disks=disks,
7774 disk_template=self.op.disk_template,
7776 network_port=network_port,
7777 beparams=self.op.beparams,
7778 hvparams=self.op.hvparams,
7779 hypervisor=self.op.hypervisor,
7780 osparams=self.op.osparams,
7783 if self.adopt_disks:
7784 # rename LVs to the newly-generated names; we need to construct
7785 # 'fake' LV disks with the old data, plus the new unique_id
7786 tmp_disks = [objects.Disk.FromDict(v.ToDict()) for v in disks]
7788 for t_dsk, a_dsk in zip (tmp_disks, self.disks):
7789 rename_to.append(t_dsk.logical_id)
7790 t_dsk.logical_id = (t_dsk.logical_id[0], a_dsk["adopt"])
7791 self.cfg.SetDiskID(t_dsk, pnode_name)
7792 result = self.rpc.call_blockdev_rename(pnode_name,
7793 zip(tmp_disks, rename_to))
7794 result.Raise("Failed to rename adoped LVs")
7796 feedback_fn("* creating instance disks...")
7798 _CreateDisks(self, iobj)
7799 except errors.OpExecError:
7800 self.LogWarning("Device creation failed, reverting...")
7802 _RemoveDisks(self, iobj)
7804 self.cfg.ReleaseDRBDMinors(instance)
7807 feedback_fn("adding instance %s to cluster config" % instance)
7809 self.cfg.AddInstance(iobj, self.proc.GetECId())
7811 # Declare that we don't want to remove the instance lock anymore, as we've
7812 # added the instance to the config
7813 del self.remove_locks[locking.LEVEL_INSTANCE]
7814 # Unlock all the nodes
7815 if self.op.mode == constants.INSTANCE_IMPORT:
7816 nodes_keep = [self.op.src_node]
7817 nodes_release = [node for node in self.acquired_locks[locking.LEVEL_NODE]
7818 if node != self.op.src_node]
7819 self.context.glm.release(locking.LEVEL_NODE, nodes_release)
7820 self.acquired_locks[locking.LEVEL_NODE] = nodes_keep
7822 self.context.glm.release(locking.LEVEL_NODE)
7823 del self.acquired_locks[locking.LEVEL_NODE]
7826 if not self.adopt_disks and self.cfg.GetClusterInfo().prealloc_wipe_disks:
7827 feedback_fn("* wiping instance disks...")
7829 _WipeDisks(self, iobj)
7830 except errors.OpExecError, err:
7831 logging.exception("Wiping disks failed")
7832 self.LogWarning("Wiping instance disks failed (%s)", err)
7836 # Something is already wrong with the disks, don't do anything else
7838 elif self.op.wait_for_sync:
7839 disk_abort = not _WaitForSync(self, iobj)
7840 elif iobj.disk_template in constants.DTS_NET_MIRROR:
7841 # make sure the disks are not degraded (still sync-ing is ok)
7843 feedback_fn("* checking mirrors status")
7844 disk_abort = not _WaitForSync(self, iobj, oneshot=True)
7849 _RemoveDisks(self, iobj)
7850 self.cfg.RemoveInstance(iobj.name)
7851 # Make sure the instance lock gets removed
7852 self.remove_locks[locking.LEVEL_INSTANCE] = iobj.name
7853 raise errors.OpExecError("There are some degraded disks for"
7856 if iobj.disk_template != constants.DT_DISKLESS and not self.adopt_disks:
7857 if self.op.mode == constants.INSTANCE_CREATE:
7858 if not self.op.no_install:
7859 feedback_fn("* running the instance OS create scripts...")
7860 # FIXME: pass debug option from opcode to backend
7861 result = self.rpc.call_instance_os_add(pnode_name, iobj, False,
7862 self.op.debug_level)
7863 result.Raise("Could not add os for instance %s"
7864 " on node %s" % (instance, pnode_name))
7866 elif self.op.mode == constants.INSTANCE_IMPORT:
7867 feedback_fn("* running the instance OS import scripts...")
7871 for idx, image in enumerate(self.src_images):
7875 # FIXME: pass debug option from opcode to backend
7876 dt = masterd.instance.DiskTransfer("disk/%s" % idx,
7877 constants.IEIO_FILE, (image, ),
7878 constants.IEIO_SCRIPT,
7879 (iobj.disks[idx], idx),
7881 transfers.append(dt)
7884 masterd.instance.TransferInstanceData(self, feedback_fn,
7885 self.op.src_node, pnode_name,
7886 self.pnode.secondary_ip,
7888 if not compat.all(import_result):
7889 self.LogWarning("Some disks for instance %s on node %s were not"
7890 " imported successfully" % (instance, pnode_name))
7892 elif self.op.mode == constants.INSTANCE_REMOTE_IMPORT:
7893 feedback_fn("* preparing remote import...")
7894 # The source cluster will stop the instance before attempting to make a
7895 # connection. In some cases stopping an instance can take a long time,
7896 # hence the shutdown timeout is added to the connection timeout.
7897 connect_timeout = (constants.RIE_CONNECT_TIMEOUT +
7898 self.op.source_shutdown_timeout)
7899 timeouts = masterd.instance.ImportExportTimeouts(connect_timeout)
7901 assert iobj.primary_node == self.pnode.name
7903 masterd.instance.RemoteImport(self, feedback_fn, iobj, self.pnode,
7904 self.source_x509_ca,
7905 self._cds, timeouts)
7906 if not compat.all(disk_results):
7907 # TODO: Should the instance still be started, even if some disks
7908 # failed to import (valid for local imports, too)?
7909 self.LogWarning("Some disks for instance %s on node %s were not"
7910 " imported successfully" % (instance, pnode_name))
7912 # Run rename script on newly imported instance
7913 assert iobj.name == instance
7914 feedback_fn("Running rename script for %s" % instance)
7915 result = self.rpc.call_instance_run_rename(pnode_name, iobj,
7916 self.source_instance_name,
7917 self.op.debug_level)
7919 self.LogWarning("Failed to run rename script for %s on node"
7920 " %s: %s" % (instance, pnode_name, result.fail_msg))
7923 # also checked in the prereq part
7924 raise errors.ProgrammerError("Unknown OS initialization mode '%s'"
7928 iobj.admin_up = True
7929 self.cfg.Update(iobj, feedback_fn)
7930 logging.info("Starting instance %s on node %s", instance, pnode_name)
7931 feedback_fn("* starting instance...")
7932 result = self.rpc.call_instance_start(pnode_name, iobj, None, None)
7933 result.Raise("Could not start instance")
7935 return list(iobj.all_nodes)
7938 class LUInstanceConsole(NoHooksLU):
7939 """Connect to an instance's console.
7941 This is somewhat special in that it returns the command line that
7942 you need to run on the master node in order to connect to the
7948 def ExpandNames(self):
7949 self._ExpandAndLockInstance()
7951 def CheckPrereq(self):
7952 """Check prerequisites.
7954 This checks that the instance is in the cluster.
7957 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
7958 assert self.instance is not None, \
7959 "Cannot retrieve locked instance %s" % self.op.instance_name
7960 _CheckNodeOnline(self, self.instance.primary_node)
7962 def Exec(self, feedback_fn):
7963 """Connect to the console of an instance
7966 instance = self.instance
7967 node = instance.primary_node
7969 node_insts = self.rpc.call_instance_list([node],
7970 [instance.hypervisor])[node]
7971 node_insts.Raise("Can't get node information from %s" % node)
7973 if instance.name not in node_insts.payload:
7974 if instance.admin_up:
7975 state = "ERROR_down"
7977 state = "ADMIN_down"
7978 raise errors.OpExecError("Instance %s is not running (state %s)" %
7979 (instance.name, state))
7981 logging.debug("Connecting to console of %s on %s", instance.name, node)
7983 return _GetInstanceConsole(self.cfg.GetClusterInfo(), instance)
7986 def _GetInstanceConsole(cluster, instance):
7987 """Returns console information for an instance.
7989 @type cluster: L{objects.Cluster}
7990 @type instance: L{objects.Instance}
7994 hyper = hypervisor.GetHypervisor(instance.hypervisor)
7995 # beparams and hvparams are passed separately, to avoid editing the
7996 # instance and then saving the defaults in the instance itself.
7997 hvparams = cluster.FillHV(instance)
7998 beparams = cluster.FillBE(instance)
7999 console = hyper.GetInstanceConsole(instance, hvparams, beparams)
8001 assert console.instance == instance.name
8002 assert console.Validate()
8004 return console.ToDict()
8007 class LUInstanceReplaceDisks(LogicalUnit):
8008 """Replace the disks of an instance.
8011 HPATH = "mirrors-replace"
8012 HTYPE = constants.HTYPE_INSTANCE
8015 def CheckArguments(self):
8016 TLReplaceDisks.CheckArguments(self.op.mode, self.op.remote_node,
8019 def ExpandNames(self):
8020 self._ExpandAndLockInstance()
8022 if self.op.iallocator is not None:
8023 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
8025 elif self.op.remote_node is not None:
8026 remote_node = _ExpandNodeName(self.cfg, self.op.remote_node)
8027 self.op.remote_node = remote_node
8029 # Warning: do not remove the locking of the new secondary here
8030 # unless DRBD8.AddChildren is changed to work in parallel;
8031 # currently it doesn't since parallel invocations of
8032 # FindUnusedMinor will conflict
8033 self.needed_locks[locking.LEVEL_NODE] = [remote_node]
8034 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_APPEND
8037 self.needed_locks[locking.LEVEL_NODE] = []
8038 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
8040 self.replacer = TLReplaceDisks(self, self.op.instance_name, self.op.mode,
8041 self.op.iallocator, self.op.remote_node,
8042 self.op.disks, False, self.op.early_release)
8044 self.tasklets = [self.replacer]
8046 def DeclareLocks(self, level):
8047 # If we're not already locking all nodes in the set we have to declare the
8048 # instance's primary/secondary nodes.
8049 if (level == locking.LEVEL_NODE and
8050 self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET):
8051 self._LockInstancesNodes()
8053 def BuildHooksEnv(self):
8056 This runs on the master, the primary and all the secondaries.
8059 instance = self.replacer.instance
8061 "MODE": self.op.mode,
8062 "NEW_SECONDARY": self.op.remote_node,
8063 "OLD_SECONDARY": instance.secondary_nodes[0],
8065 env.update(_BuildInstanceHookEnvByObject(self, instance))
8067 self.cfg.GetMasterNode(),
8068 instance.primary_node,
8070 if self.op.remote_node is not None:
8071 nl.append(self.op.remote_node)
8075 class TLReplaceDisks(Tasklet):
8076 """Replaces disks for an instance.
8078 Note: Locking is not within the scope of this class.
8081 def __init__(self, lu, instance_name, mode, iallocator_name, remote_node,
8082 disks, delay_iallocator, early_release):
8083 """Initializes this class.
8086 Tasklet.__init__(self, lu)
8089 self.instance_name = instance_name
8091 self.iallocator_name = iallocator_name
8092 self.remote_node = remote_node
8094 self.delay_iallocator = delay_iallocator
8095 self.early_release = early_release
8098 self.instance = None
8099 self.new_node = None
8100 self.target_node = None
8101 self.other_node = None
8102 self.remote_node_info = None
8103 self.node_secondary_ip = None
8106 def CheckArguments(mode, remote_node, iallocator):
8107 """Helper function for users of this class.
8110 # check for valid parameter combination
8111 if mode == constants.REPLACE_DISK_CHG:
8112 if remote_node is None and iallocator is None:
8113 raise errors.OpPrereqError("When changing the secondary either an"
8114 " iallocator script must be used or the"
8115 " new node given", errors.ECODE_INVAL)
8117 if remote_node is not None and iallocator is not None:
8118 raise errors.OpPrereqError("Give either the iallocator or the new"
8119 " secondary, not both", errors.ECODE_INVAL)
8121 elif remote_node is not None or iallocator is not None:
8122 # Not replacing the secondary
8123 raise errors.OpPrereqError("The iallocator and new node options can"
8124 " only be used when changing the"
8125 " secondary node", errors.ECODE_INVAL)
8128 def _RunAllocator(lu, iallocator_name, instance_name, relocate_from):
8129 """Compute a new secondary node using an IAllocator.
8132 ial = IAllocator(lu.cfg, lu.rpc,
8133 mode=constants.IALLOCATOR_MODE_RELOC,
8135 relocate_from=relocate_from)
8137 ial.Run(iallocator_name)
8140 raise errors.OpPrereqError("Can't compute nodes using iallocator '%s':"
8141 " %s" % (iallocator_name, ial.info),
8144 if len(ial.result) != ial.required_nodes:
8145 raise errors.OpPrereqError("iallocator '%s' returned invalid number"
8146 " of nodes (%s), required %s" %
8148 len(ial.result), ial.required_nodes),
8151 remote_node_name = ial.result[0]
8153 lu.LogInfo("Selected new secondary for instance '%s': %s",
8154 instance_name, remote_node_name)
8156 return remote_node_name
8158 def _FindFaultyDisks(self, node_name):
8159 return _FindFaultyInstanceDisks(self.cfg, self.rpc, self.instance,
8162 def CheckPrereq(self):
8163 """Check prerequisites.
8165 This checks that the instance is in the cluster.
8168 self.instance = instance = self.cfg.GetInstanceInfo(self.instance_name)
8169 assert instance is not None, \
8170 "Cannot retrieve locked instance %s" % self.instance_name
8172 if instance.disk_template != constants.DT_DRBD8:
8173 raise errors.OpPrereqError("Can only run replace disks for DRBD8-based"
8174 " instances", errors.ECODE_INVAL)
8176 if len(instance.secondary_nodes) != 1:
8177 raise errors.OpPrereqError("The instance has a strange layout,"
8178 " expected one secondary but found %d" %
8179 len(instance.secondary_nodes),
8182 if not self.delay_iallocator:
8183 self._CheckPrereq2()
8185 def _CheckPrereq2(self):
8186 """Check prerequisites, second part.
8188 This function should always be part of CheckPrereq. It was separated and is
8189 now called from Exec because during node evacuation iallocator was only
8190 called with an unmodified cluster model, not taking planned changes into
8194 instance = self.instance
8195 secondary_node = instance.secondary_nodes[0]
8197 if self.iallocator_name is None:
8198 remote_node = self.remote_node
8200 remote_node = self._RunAllocator(self.lu, self.iallocator_name,
8201 instance.name, instance.secondary_nodes)
8203 if remote_node is not None:
8204 self.remote_node_info = self.cfg.GetNodeInfo(remote_node)
8205 assert self.remote_node_info is not None, \
8206 "Cannot retrieve locked node %s" % remote_node
8208 self.remote_node_info = None
8210 if remote_node == self.instance.primary_node:
8211 raise errors.OpPrereqError("The specified node is the primary node of"
8212 " the instance.", errors.ECODE_INVAL)
8214 if remote_node == secondary_node:
8215 raise errors.OpPrereqError("The specified node is already the"
8216 " secondary node of the instance.",
8219 if self.disks and self.mode in (constants.REPLACE_DISK_AUTO,
8220 constants.REPLACE_DISK_CHG):
8221 raise errors.OpPrereqError("Cannot specify disks to be replaced",
8224 if self.mode == constants.REPLACE_DISK_AUTO:
8225 faulty_primary = self._FindFaultyDisks(instance.primary_node)
8226 faulty_secondary = self._FindFaultyDisks(secondary_node)
8228 if faulty_primary and faulty_secondary:
8229 raise errors.OpPrereqError("Instance %s has faulty disks on more than"
8230 " one node and can not be repaired"
8231 " automatically" % self.instance_name,
8235 self.disks = faulty_primary
8236 self.target_node = instance.primary_node
8237 self.other_node = secondary_node
8238 check_nodes = [self.target_node, self.other_node]
8239 elif faulty_secondary:
8240 self.disks = faulty_secondary
8241 self.target_node = secondary_node
8242 self.other_node = instance.primary_node
8243 check_nodes = [self.target_node, self.other_node]
8249 # Non-automatic modes
8250 if self.mode == constants.REPLACE_DISK_PRI:
8251 self.target_node = instance.primary_node
8252 self.other_node = secondary_node
8253 check_nodes = [self.target_node, self.other_node]
8255 elif self.mode == constants.REPLACE_DISK_SEC:
8256 self.target_node = secondary_node
8257 self.other_node = instance.primary_node
8258 check_nodes = [self.target_node, self.other_node]
8260 elif self.mode == constants.REPLACE_DISK_CHG:
8261 self.new_node = remote_node
8262 self.other_node = instance.primary_node
8263 self.target_node = secondary_node
8264 check_nodes = [self.new_node, self.other_node]
8266 _CheckNodeNotDrained(self.lu, remote_node)
8267 _CheckNodeVmCapable(self.lu, remote_node)
8269 old_node_info = self.cfg.GetNodeInfo(secondary_node)
8270 assert old_node_info is not None
8271 if old_node_info.offline and not self.early_release:
8272 # doesn't make sense to delay the release
8273 self.early_release = True
8274 self.lu.LogInfo("Old secondary %s is offline, automatically enabling"
8275 " early-release mode", secondary_node)
8278 raise errors.ProgrammerError("Unhandled disk replace mode (%s)" %
8281 # If not specified all disks should be replaced
8283 self.disks = range(len(self.instance.disks))
8285 for node in check_nodes:
8286 _CheckNodeOnline(self.lu, node)
8288 touched_nodes = frozenset([self.new_node, self.other_node,
8291 if self.lu.needed_locks[locking.LEVEL_NODE] == locking.ALL_SET:
8292 # Release unneeded node locks
8293 for name in self.lu.acquired_locks[locking.LEVEL_NODE]:
8294 if name not in touched_nodes:
8295 self._ReleaseNodeLock(name)
8297 # Check whether disks are valid
8298 for disk_idx in self.disks:
8299 instance.FindDisk(disk_idx)
8301 # Get secondary node IP addresses
8302 self.node_secondary_ip = \
8303 dict((node_name, self.cfg.GetNodeInfo(node_name).secondary_ip)
8304 for node_name in touched_nodes
8305 if node_name is not None)
8307 def Exec(self, feedback_fn):
8308 """Execute disk replacement.
8310 This dispatches the disk replacement to the appropriate handler.
8313 if self.delay_iallocator:
8314 self._CheckPrereq2()
8316 if (self.lu.needed_locks[locking.LEVEL_NODE] == locking.ALL_SET and
8318 # Verify owned locks before starting operation
8319 owned_locks = self.lu.context.glm.list_owned(locking.LEVEL_NODE)
8320 assert set(owned_locks) == set(self.node_secondary_ip), \
8321 "Not owning the correct locks: %s" % (owned_locks, )
8324 feedback_fn("No disks need replacement")
8327 feedback_fn("Replacing disk(s) %s for %s" %
8328 (utils.CommaJoin(self.disks), self.instance.name))
8330 activate_disks = (not self.instance.admin_up)
8332 # Activate the instance disks if we're replacing them on a down instance
8334 _StartInstanceDisks(self.lu, self.instance, True)
8337 # Should we replace the secondary node?
8338 if self.new_node is not None:
8339 fn = self._ExecDrbd8Secondary
8341 fn = self._ExecDrbd8DiskOnly
8343 return fn(feedback_fn)
8346 # Deactivate the instance disks if we're replacing them on a
8349 _SafeShutdownInstanceDisks(self.lu, self.instance)
8352 # Verify owned locks
8353 owned_locks = self.lu.context.glm.list_owned(locking.LEVEL_NODE)
8354 assert ((self.early_release and not owned_locks) or
8355 (not self.early_release and
8356 set(owned_locks) == set(self.node_secondary_ip))), \
8357 ("Not owning the correct locks, early_release=%s, owned=%r" %
8358 (self.early_release, owned_locks))
8360 def _CheckVolumeGroup(self, nodes):
8361 self.lu.LogInfo("Checking volume groups")
8363 vgname = self.cfg.GetVGName()
8365 # Make sure volume group exists on all involved nodes
8366 results = self.rpc.call_vg_list(nodes)
8368 raise errors.OpExecError("Can't list volume groups on the nodes")
8372 res.Raise("Error checking node %s" % node)
8373 if vgname not in res.payload:
8374 raise errors.OpExecError("Volume group '%s' not found on node %s" %
8377 def _CheckDisksExistence(self, nodes):
8378 # Check disk existence
8379 for idx, dev in enumerate(self.instance.disks):
8380 if idx not in self.disks:
8384 self.lu.LogInfo("Checking disk/%d on %s" % (idx, node))
8385 self.cfg.SetDiskID(dev, node)
8387 result = self.rpc.call_blockdev_find(node, dev)
8389 msg = result.fail_msg
8390 if msg or not result.payload:
8392 msg = "disk not found"
8393 raise errors.OpExecError("Can't find disk/%d on node %s: %s" %
8396 def _CheckDisksConsistency(self, node_name, on_primary, ldisk):
8397 for idx, dev in enumerate(self.instance.disks):
8398 if idx not in self.disks:
8401 self.lu.LogInfo("Checking disk/%d consistency on node %s" %
8404 if not _CheckDiskConsistency(self.lu, dev, node_name, on_primary,
8406 raise errors.OpExecError("Node %s has degraded storage, unsafe to"
8407 " replace disks for instance %s" %
8408 (node_name, self.instance.name))
8410 def _CreateNewStorage(self, node_name):
8413 for idx, dev in enumerate(self.instance.disks):
8414 if idx not in self.disks:
8417 self.lu.LogInfo("Adding storage on %s for disk/%d" % (node_name, idx))
8419 self.cfg.SetDiskID(dev, node_name)
8421 lv_names = [".disk%d_%s" % (idx, suffix) for suffix in ["data", "meta"]]
8422 names = _GenerateUniqueNames(self.lu, lv_names)
8424 vg_data = dev.children[0].logical_id[0]
8425 lv_data = objects.Disk(dev_type=constants.LD_LV, size=dev.size,
8426 logical_id=(vg_data, names[0]))
8427 vg_meta = dev.children[1].logical_id[0]
8428 lv_meta = objects.Disk(dev_type=constants.LD_LV, size=128,
8429 logical_id=(vg_meta, names[1]))
8431 new_lvs = [lv_data, lv_meta]
8432 old_lvs = dev.children
8433 iv_names[dev.iv_name] = (dev, old_lvs, new_lvs)
8435 # we pass force_create=True to force the LVM creation
8436 for new_lv in new_lvs:
8437 _CreateBlockDev(self.lu, node_name, self.instance, new_lv, True,
8438 _GetInstanceInfoText(self.instance), False)
8442 def _CheckDevices(self, node_name, iv_names):
8443 for name, (dev, _, _) in iv_names.iteritems():
8444 self.cfg.SetDiskID(dev, node_name)
8446 result = self.rpc.call_blockdev_find(node_name, dev)
8448 msg = result.fail_msg
8449 if msg or not result.payload:
8451 msg = "disk not found"
8452 raise errors.OpExecError("Can't find DRBD device %s: %s" %
8455 if result.payload.is_degraded:
8456 raise errors.OpExecError("DRBD device %s is degraded!" % name)
8458 def _RemoveOldStorage(self, node_name, iv_names):
8459 for name, (_, old_lvs, _) in iv_names.iteritems():
8460 self.lu.LogInfo("Remove logical volumes for %s" % name)
8463 self.cfg.SetDiskID(lv, node_name)
8465 msg = self.rpc.call_blockdev_remove(node_name, lv).fail_msg
8467 self.lu.LogWarning("Can't remove old LV: %s" % msg,
8468 hint="remove unused LVs manually")
8470 def _ReleaseNodeLock(self, node_name):
8471 """Releases the lock for a given node."""
8472 self.lu.context.glm.release(locking.LEVEL_NODE, node_name)
8474 def _ExecDrbd8DiskOnly(self, feedback_fn):
8475 """Replace a disk on the primary or secondary for DRBD 8.
8477 The algorithm for replace is quite complicated:
8479 1. for each disk to be replaced:
8481 1. create new LVs on the target node with unique names
8482 1. detach old LVs from the drbd device
8483 1. rename old LVs to name_replaced.<time_t>
8484 1. rename new LVs to old LVs
8485 1. attach the new LVs (with the old names now) to the drbd device
8487 1. wait for sync across all devices
8489 1. for each modified disk:
8491 1. remove old LVs (which have the name name_replaces.<time_t>)
8493 Failures are not very well handled.
8498 # Step: check device activation
8499 self.lu.LogStep(1, steps_total, "Check device existence")
8500 self._CheckDisksExistence([self.other_node, self.target_node])
8501 self._CheckVolumeGroup([self.target_node, self.other_node])
8503 # Step: check other node consistency
8504 self.lu.LogStep(2, steps_total, "Check peer consistency")
8505 self._CheckDisksConsistency(self.other_node,
8506 self.other_node == self.instance.primary_node,
8509 # Step: create new storage
8510 self.lu.LogStep(3, steps_total, "Allocate new storage")
8511 iv_names = self._CreateNewStorage(self.target_node)
8513 # Step: for each lv, detach+rename*2+attach
8514 self.lu.LogStep(4, steps_total, "Changing drbd configuration")
8515 for dev, old_lvs, new_lvs in iv_names.itervalues():
8516 self.lu.LogInfo("Detaching %s drbd from local storage" % dev.iv_name)
8518 result = self.rpc.call_blockdev_removechildren(self.target_node, dev,
8520 result.Raise("Can't detach drbd from local storage on node"
8521 " %s for device %s" % (self.target_node, dev.iv_name))
8523 #cfg.Update(instance)
8525 # ok, we created the new LVs, so now we know we have the needed
8526 # storage; as such, we proceed on the target node to rename
8527 # old_lv to _old, and new_lv to old_lv; note that we rename LVs
8528 # using the assumption that logical_id == physical_id (which in
8529 # turn is the unique_id on that node)
8531 # FIXME(iustin): use a better name for the replaced LVs
8532 temp_suffix = int(time.time())
8533 ren_fn = lambda d, suff: (d.physical_id[0],
8534 d.physical_id[1] + "_replaced-%s" % suff)
8536 # Build the rename list based on what LVs exist on the node
8537 rename_old_to_new = []
8538 for to_ren in old_lvs:
8539 result = self.rpc.call_blockdev_find(self.target_node, to_ren)
8540 if not result.fail_msg and result.payload:
8542 rename_old_to_new.append((to_ren, ren_fn(to_ren, temp_suffix)))
8544 self.lu.LogInfo("Renaming the old LVs on the target node")
8545 result = self.rpc.call_blockdev_rename(self.target_node,
8547 result.Raise("Can't rename old LVs on node %s" % self.target_node)
8549 # Now we rename the new LVs to the old LVs
8550 self.lu.LogInfo("Renaming the new LVs on the target node")
8551 rename_new_to_old = [(new, old.physical_id)
8552 for old, new in zip(old_lvs, new_lvs)]
8553 result = self.rpc.call_blockdev_rename(self.target_node,
8555 result.Raise("Can't rename new LVs on node %s" % self.target_node)
8557 for old, new in zip(old_lvs, new_lvs):
8558 new.logical_id = old.logical_id
8559 self.cfg.SetDiskID(new, self.target_node)
8561 for disk in old_lvs:
8562 disk.logical_id = ren_fn(disk, temp_suffix)
8563 self.cfg.SetDiskID(disk, self.target_node)
8565 # Now that the new lvs have the old name, we can add them to the device
8566 self.lu.LogInfo("Adding new mirror component on %s" % self.target_node)
8567 result = self.rpc.call_blockdev_addchildren(self.target_node, dev,
8569 msg = result.fail_msg
8571 for new_lv in new_lvs:
8572 msg2 = self.rpc.call_blockdev_remove(self.target_node,
8575 self.lu.LogWarning("Can't rollback device %s: %s", dev, msg2,
8576 hint=("cleanup manually the unused logical"
8578 raise errors.OpExecError("Can't add local storage to drbd: %s" % msg)
8580 dev.children = new_lvs
8582 self.cfg.Update(self.instance, feedback_fn)
8585 if self.early_release:
8586 self.lu.LogStep(cstep, steps_total, "Removing old storage")
8588 self._RemoveOldStorage(self.target_node, iv_names)
8589 # WARNING: we release both node locks here, do not do other RPCs
8590 # than WaitForSync to the primary node
8591 self._ReleaseNodeLock([self.target_node, self.other_node])
8594 # This can fail as the old devices are degraded and _WaitForSync
8595 # does a combined result over all disks, so we don't check its return value
8596 self.lu.LogStep(cstep, steps_total, "Sync devices")
8598 _WaitForSync(self.lu, self.instance)
8600 # Check all devices manually
8601 self._CheckDevices(self.instance.primary_node, iv_names)
8603 # Step: remove old storage
8604 if not self.early_release:
8605 self.lu.LogStep(cstep, steps_total, "Removing old storage")
8607 self._RemoveOldStorage(self.target_node, iv_names)
8609 def _ExecDrbd8Secondary(self, feedback_fn):
8610 """Replace the secondary node for DRBD 8.
8612 The algorithm for replace is quite complicated:
8613 - for all disks of the instance:
8614 - create new LVs on the new node with same names
8615 - shutdown the drbd device on the old secondary
8616 - disconnect the drbd network on the primary
8617 - create the drbd device on the new secondary
8618 - network attach the drbd on the primary, using an artifice:
8619 the drbd code for Attach() will connect to the network if it
8620 finds a device which is connected to the good local disks but
8622 - wait for sync across all devices
8623 - remove all disks from the old secondary
8625 Failures are not very well handled.
8630 # Step: check device activation
8631 self.lu.LogStep(1, steps_total, "Check device existence")
8632 self._CheckDisksExistence([self.instance.primary_node])
8633 self._CheckVolumeGroup([self.instance.primary_node])
8635 # Step: check other node consistency
8636 self.lu.LogStep(2, steps_total, "Check peer consistency")
8637 self._CheckDisksConsistency(self.instance.primary_node, True, True)
8639 # Step: create new storage
8640 self.lu.LogStep(3, steps_total, "Allocate new storage")
8641 for idx, dev in enumerate(self.instance.disks):
8642 self.lu.LogInfo("Adding new local storage on %s for disk/%d" %
8643 (self.new_node, idx))
8644 # we pass force_create=True to force LVM creation
8645 for new_lv in dev.children:
8646 _CreateBlockDev(self.lu, self.new_node, self.instance, new_lv, True,
8647 _GetInstanceInfoText(self.instance), False)
8649 # Step 4: dbrd minors and drbd setups changes
8650 # after this, we must manually remove the drbd minors on both the
8651 # error and the success paths
8652 self.lu.LogStep(4, steps_total, "Changing drbd configuration")
8653 minors = self.cfg.AllocateDRBDMinor([self.new_node
8654 for dev in self.instance.disks],
8656 logging.debug("Allocated minors %r", minors)
8659 for idx, (dev, new_minor) in enumerate(zip(self.instance.disks, minors)):
8660 self.lu.LogInfo("activating a new drbd on %s for disk/%d" %
8661 (self.new_node, idx))
8662 # create new devices on new_node; note that we create two IDs:
8663 # one without port, so the drbd will be activated without
8664 # networking information on the new node at this stage, and one
8665 # with network, for the latter activation in step 4
8666 (o_node1, o_node2, o_port, o_minor1, o_minor2, o_secret) = dev.logical_id
8667 if self.instance.primary_node == o_node1:
8670 assert self.instance.primary_node == o_node2, "Three-node instance?"
8673 new_alone_id = (self.instance.primary_node, self.new_node, None,
8674 p_minor, new_minor, o_secret)
8675 new_net_id = (self.instance.primary_node, self.new_node, o_port,
8676 p_minor, new_minor, o_secret)
8678 iv_names[idx] = (dev, dev.children, new_net_id)
8679 logging.debug("Allocated new_minor: %s, new_logical_id: %s", new_minor,
8681 new_drbd = objects.Disk(dev_type=constants.LD_DRBD8,
8682 logical_id=new_alone_id,
8683 children=dev.children,
8686 _CreateSingleBlockDev(self.lu, self.new_node, self.instance, new_drbd,
8687 _GetInstanceInfoText(self.instance), False)
8688 except errors.GenericError:
8689 self.cfg.ReleaseDRBDMinors(self.instance.name)
8692 # We have new devices, shutdown the drbd on the old secondary
8693 for idx, dev in enumerate(self.instance.disks):
8694 self.lu.LogInfo("Shutting down drbd for disk/%d on old node" % idx)
8695 self.cfg.SetDiskID(dev, self.target_node)
8696 msg = self.rpc.call_blockdev_shutdown(self.target_node, dev).fail_msg
8698 self.lu.LogWarning("Failed to shutdown drbd for disk/%d on old"
8699 "node: %s" % (idx, msg),
8700 hint=("Please cleanup this device manually as"
8701 " soon as possible"))
8703 self.lu.LogInfo("Detaching primary drbds from the network (=> standalone)")
8704 result = self.rpc.call_drbd_disconnect_net([self.instance.primary_node],
8705 self.node_secondary_ip,
8706 self.instance.disks)\
8707 [self.instance.primary_node]
8709 msg = result.fail_msg
8711 # detaches didn't succeed (unlikely)
8712 self.cfg.ReleaseDRBDMinors(self.instance.name)
8713 raise errors.OpExecError("Can't detach the disks from the network on"
8714 " old node: %s" % (msg,))
8716 # if we managed to detach at least one, we update all the disks of
8717 # the instance to point to the new secondary
8718 self.lu.LogInfo("Updating instance configuration")
8719 for dev, _, new_logical_id in iv_names.itervalues():
8720 dev.logical_id = new_logical_id
8721 self.cfg.SetDiskID(dev, self.instance.primary_node)
8723 self.cfg.Update(self.instance, feedback_fn)
8725 # and now perform the drbd attach
8726 self.lu.LogInfo("Attaching primary drbds to new secondary"
8727 " (standalone => connected)")
8728 result = self.rpc.call_drbd_attach_net([self.instance.primary_node,
8730 self.node_secondary_ip,
8731 self.instance.disks,
8734 for to_node, to_result in result.items():
8735 msg = to_result.fail_msg
8737 self.lu.LogWarning("Can't attach drbd disks on node %s: %s",
8739 hint=("please do a gnt-instance info to see the"
8740 " status of disks"))
8742 if self.early_release:
8743 self.lu.LogStep(cstep, steps_total, "Removing old storage")
8745 self._RemoveOldStorage(self.target_node, iv_names)
8746 # WARNING: we release all node locks here, do not do other RPCs
8747 # than WaitForSync to the primary node
8748 self._ReleaseNodeLock([self.instance.primary_node,
8753 # This can fail as the old devices are degraded and _WaitForSync
8754 # does a combined result over all disks, so we don't check its return value
8755 self.lu.LogStep(cstep, steps_total, "Sync devices")
8757 _WaitForSync(self.lu, self.instance)
8759 # Check all devices manually
8760 self._CheckDevices(self.instance.primary_node, iv_names)
8762 # Step: remove old storage
8763 if not self.early_release:
8764 self.lu.LogStep(cstep, steps_total, "Removing old storage")
8765 self._RemoveOldStorage(self.target_node, iv_names)
8768 class LURepairNodeStorage(NoHooksLU):
8769 """Repairs the volume group on a node.
8774 def CheckArguments(self):
8775 self.op.node_name = _ExpandNodeName(self.cfg, self.op.node_name)
8777 storage_type = self.op.storage_type
8779 if (constants.SO_FIX_CONSISTENCY not in
8780 constants.VALID_STORAGE_OPERATIONS.get(storage_type, [])):
8781 raise errors.OpPrereqError("Storage units of type '%s' can not be"
8782 " repaired" % storage_type,
8785 def ExpandNames(self):
8786 self.needed_locks = {
8787 locking.LEVEL_NODE: [self.op.node_name],
8790 def _CheckFaultyDisks(self, instance, node_name):
8791 """Ensure faulty disks abort the opcode or at least warn."""
8793 if _FindFaultyInstanceDisks(self.cfg, self.rpc, instance,
8795 raise errors.OpPrereqError("Instance '%s' has faulty disks on"
8796 " node '%s'" % (instance.name, node_name),
8798 except errors.OpPrereqError, err:
8799 if self.op.ignore_consistency:
8800 self.proc.LogWarning(str(err.args[0]))
8804 def CheckPrereq(self):
8805 """Check prerequisites.
8808 # Check whether any instance on this node has faulty disks
8809 for inst in _GetNodeInstances(self.cfg, self.op.node_name):
8810 if not inst.admin_up:
8812 check_nodes = set(inst.all_nodes)
8813 check_nodes.discard(self.op.node_name)
8814 for inst_node_name in check_nodes:
8815 self._CheckFaultyDisks(inst, inst_node_name)
8817 def Exec(self, feedback_fn):
8818 feedback_fn("Repairing storage unit '%s' on %s ..." %
8819 (self.op.name, self.op.node_name))
8821 st_args = _GetStorageTypeArgs(self.cfg, self.op.storage_type)
8822 result = self.rpc.call_storage_execute(self.op.node_name,
8823 self.op.storage_type, st_args,
8825 constants.SO_FIX_CONSISTENCY)
8826 result.Raise("Failed to repair storage unit '%s' on %s" %
8827 (self.op.name, self.op.node_name))
8830 class LUNodeEvacStrategy(NoHooksLU):
8831 """Computes the node evacuation strategy.
8836 def CheckArguments(self):
8837 _CheckIAllocatorOrNode(self, "iallocator", "remote_node")
8839 def ExpandNames(self):
8840 self.op.nodes = _GetWantedNodes(self, self.op.nodes)
8841 self.needed_locks = locks = {}
8842 if self.op.remote_node is None:
8843 locks[locking.LEVEL_NODE] = locking.ALL_SET
8845 self.op.remote_node = _ExpandNodeName(self.cfg, self.op.remote_node)
8846 locks[locking.LEVEL_NODE] = self.op.nodes + [self.op.remote_node]
8848 def Exec(self, feedback_fn):
8849 if self.op.remote_node is not None:
8851 for node in self.op.nodes:
8852 instances.extend(_GetNodeSecondaryInstances(self.cfg, node))
8855 if i.primary_node == self.op.remote_node:
8856 raise errors.OpPrereqError("Node %s is the primary node of"
8857 " instance %s, cannot use it as"
8859 (self.op.remote_node, i.name),
8861 result.append([i.name, self.op.remote_node])
8863 ial = IAllocator(self.cfg, self.rpc,
8864 mode=constants.IALLOCATOR_MODE_MEVAC,
8865 evac_nodes=self.op.nodes)
8866 ial.Run(self.op.iallocator, validate=True)
8868 raise errors.OpExecError("No valid evacuation solution: %s" % ial.info,
8874 class LUInstanceGrowDisk(LogicalUnit):
8875 """Grow a disk of an instance.
8879 HTYPE = constants.HTYPE_INSTANCE
8882 def ExpandNames(self):
8883 self._ExpandAndLockInstance()
8884 self.needed_locks[locking.LEVEL_NODE] = []
8885 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
8887 def DeclareLocks(self, level):
8888 if level == locking.LEVEL_NODE:
8889 self._LockInstancesNodes()
8891 def BuildHooksEnv(self):
8894 This runs on the master, the primary and all the secondaries.
8898 "DISK": self.op.disk,
8899 "AMOUNT": self.op.amount,
8901 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
8902 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
8905 def CheckPrereq(self):
8906 """Check prerequisites.
8908 This checks that the instance is in the cluster.
8911 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
8912 assert instance is not None, \
8913 "Cannot retrieve locked instance %s" % self.op.instance_name
8914 nodenames = list(instance.all_nodes)
8915 for node in nodenames:
8916 _CheckNodeOnline(self, node)
8918 self.instance = instance
8920 if instance.disk_template not in constants.DTS_GROWABLE:
8921 raise errors.OpPrereqError("Instance's disk layout does not support"
8922 " growing.", errors.ECODE_INVAL)
8924 self.disk = instance.FindDisk(self.op.disk)
8926 if instance.disk_template != constants.DT_FILE:
8927 # TODO: check the free disk space for file, when that feature
8929 _CheckNodesFreeDiskPerVG(self, nodenames,
8930 self.disk.ComputeGrowth(self.op.amount))
8932 def Exec(self, feedback_fn):
8933 """Execute disk grow.
8936 instance = self.instance
8939 disks_ok, _ = _AssembleInstanceDisks(self, self.instance, disks=[disk])
8941 raise errors.OpExecError("Cannot activate block device to grow")
8943 for node in instance.all_nodes:
8944 self.cfg.SetDiskID(disk, node)
8945 result = self.rpc.call_blockdev_grow(node, disk, self.op.amount)
8946 result.Raise("Grow request failed to node %s" % node)
8948 # TODO: Rewrite code to work properly
8949 # DRBD goes into sync mode for a short amount of time after executing the
8950 # "resize" command. DRBD 8.x below version 8.0.13 contains a bug whereby
8951 # calling "resize" in sync mode fails. Sleeping for a short amount of
8952 # time is a work-around.
8955 disk.RecordGrow(self.op.amount)
8956 self.cfg.Update(instance, feedback_fn)
8957 if self.op.wait_for_sync:
8958 disk_abort = not _WaitForSync(self, instance, disks=[disk])
8960 self.proc.LogWarning("Warning: disk sync-ing has not returned a good"
8961 " status.\nPlease check the instance.")
8962 if not instance.admin_up:
8963 _SafeShutdownInstanceDisks(self, instance, disks=[disk])
8964 elif not instance.admin_up:
8965 self.proc.LogWarning("Not shutting down the disk even if the instance is"
8966 " not supposed to be running because no wait for"
8967 " sync mode was requested.")
8970 class LUInstanceQueryData(NoHooksLU):
8971 """Query runtime instance data.
8976 def ExpandNames(self):
8977 self.needed_locks = {}
8979 # Use locking if requested or when non-static information is wanted
8980 if not (self.op.static or self.op.use_locking):
8981 self.LogWarning("Non-static data requested, locks need to be acquired")
8982 self.op.use_locking = True
8984 if self.op.instances or not self.op.use_locking:
8985 # Expand instance names right here
8986 self.wanted_names = _GetWantedInstances(self, self.op.instances)
8988 # Will use acquired locks
8989 self.wanted_names = None
8991 if self.op.use_locking:
8992 self.share_locks = dict.fromkeys(locking.LEVELS, 1)
8994 if self.wanted_names is None:
8995 self.needed_locks[locking.LEVEL_INSTANCE] = locking.ALL_SET
8997 self.needed_locks[locking.LEVEL_INSTANCE] = self.wanted_names
8999 self.needed_locks[locking.LEVEL_NODE] = []
9000 self.share_locks = dict.fromkeys(locking.LEVELS, 1)
9001 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
9003 def DeclareLocks(self, level):
9004 if self.op.use_locking and level == locking.LEVEL_NODE:
9005 self._LockInstancesNodes()
9007 def CheckPrereq(self):
9008 """Check prerequisites.
9010 This only checks the optional instance list against the existing names.
9013 if self.wanted_names is None:
9014 assert self.op.use_locking, "Locking was not used"
9015 self.wanted_names = self.acquired_locks[locking.LEVEL_INSTANCE]
9017 self.wanted_instances = [self.cfg.GetInstanceInfo(name)
9018 for name in self.wanted_names]
9020 def _ComputeBlockdevStatus(self, node, instance_name, dev):
9021 """Returns the status of a block device
9024 if self.op.static or not node:
9027 self.cfg.SetDiskID(dev, node)
9029 result = self.rpc.call_blockdev_find(node, dev)
9033 result.Raise("Can't compute disk status for %s" % instance_name)
9035 status = result.payload
9039 return (status.dev_path, status.major, status.minor,
9040 status.sync_percent, status.estimated_time,
9041 status.is_degraded, status.ldisk_status)
9043 def _ComputeDiskStatus(self, instance, snode, dev):
9044 """Compute block device status.
9047 if dev.dev_type in constants.LDS_DRBD:
9048 # we change the snode then (otherwise we use the one passed in)
9049 if dev.logical_id[0] == instance.primary_node:
9050 snode = dev.logical_id[1]
9052 snode = dev.logical_id[0]
9054 dev_pstatus = self._ComputeBlockdevStatus(instance.primary_node,
9056 dev_sstatus = self._ComputeBlockdevStatus(snode, instance.name, dev)
9059 dev_children = [self._ComputeDiskStatus(instance, snode, child)
9060 for child in dev.children]
9065 "iv_name": dev.iv_name,
9066 "dev_type": dev.dev_type,
9067 "logical_id": dev.logical_id,
9068 "physical_id": dev.physical_id,
9069 "pstatus": dev_pstatus,
9070 "sstatus": dev_sstatus,
9071 "children": dev_children,
9076 def Exec(self, feedback_fn):
9077 """Gather and return data"""
9080 cluster = self.cfg.GetClusterInfo()
9082 for instance in self.wanted_instances:
9083 if not self.op.static:
9084 remote_info = self.rpc.call_instance_info(instance.primary_node,
9086 instance.hypervisor)
9087 remote_info.Raise("Error checking node %s" % instance.primary_node)
9088 remote_info = remote_info.payload
9089 if remote_info and "state" in remote_info:
9092 remote_state = "down"
9095 if instance.admin_up:
9098 config_state = "down"
9100 disks = [self._ComputeDiskStatus(instance, None, device)
9101 for device in instance.disks]
9103 result[instance.name] = {
9104 "name": instance.name,
9105 "config_state": config_state,
9106 "run_state": remote_state,
9107 "pnode": instance.primary_node,
9108 "snodes": instance.secondary_nodes,
9110 # this happens to be the same format used for hooks
9111 "nics": _NICListToTuple(self, instance.nics),
9112 "disk_template": instance.disk_template,
9114 "hypervisor": instance.hypervisor,
9115 "network_port": instance.network_port,
9116 "hv_instance": instance.hvparams,
9117 "hv_actual": cluster.FillHV(instance, skip_globals=True),
9118 "be_instance": instance.beparams,
9119 "be_actual": cluster.FillBE(instance),
9120 "os_instance": instance.osparams,
9121 "os_actual": cluster.SimpleFillOS(instance.os, instance.osparams),
9122 "serial_no": instance.serial_no,
9123 "mtime": instance.mtime,
9124 "ctime": instance.ctime,
9125 "uuid": instance.uuid,
9131 class LUInstanceSetParams(LogicalUnit):
9132 """Modifies an instances's parameters.
9135 HPATH = "instance-modify"
9136 HTYPE = constants.HTYPE_INSTANCE
9139 def CheckArguments(self):
9140 if not (self.op.nics or self.op.disks or self.op.disk_template or
9141 self.op.hvparams or self.op.beparams or self.op.os_name):
9142 raise errors.OpPrereqError("No changes submitted", errors.ECODE_INVAL)
9144 if self.op.hvparams:
9145 _CheckGlobalHvParams(self.op.hvparams)
9149 for disk_op, disk_dict in self.op.disks:
9150 utils.ForceDictType(disk_dict, constants.IDISK_PARAMS_TYPES)
9151 if disk_op == constants.DDM_REMOVE:
9154 elif disk_op == constants.DDM_ADD:
9157 if not isinstance(disk_op, int):
9158 raise errors.OpPrereqError("Invalid disk index", errors.ECODE_INVAL)
9159 if not isinstance(disk_dict, dict):
9160 msg = "Invalid disk value: expected dict, got '%s'" % disk_dict
9161 raise errors.OpPrereqError(msg, errors.ECODE_INVAL)
9163 if disk_op == constants.DDM_ADD:
9164 mode = disk_dict.setdefault('mode', constants.DISK_RDWR)
9165 if mode not in constants.DISK_ACCESS_SET:
9166 raise errors.OpPrereqError("Invalid disk access mode '%s'" % mode,
9168 size = disk_dict.get('size', None)
9170 raise errors.OpPrereqError("Required disk parameter size missing",
9174 except (TypeError, ValueError), err:
9175 raise errors.OpPrereqError("Invalid disk size parameter: %s" %
9176 str(err), errors.ECODE_INVAL)
9177 disk_dict['size'] = size
9179 # modification of disk
9180 if 'size' in disk_dict:
9181 raise errors.OpPrereqError("Disk size change not possible, use"
9182 " grow-disk", errors.ECODE_INVAL)
9184 if disk_addremove > 1:
9185 raise errors.OpPrereqError("Only one disk add or remove operation"
9186 " supported at a time", errors.ECODE_INVAL)
9188 if self.op.disks and self.op.disk_template is not None:
9189 raise errors.OpPrereqError("Disk template conversion and other disk"
9190 " changes not supported at the same time",
9193 if (self.op.disk_template and
9194 self.op.disk_template in constants.DTS_NET_MIRROR and
9195 self.op.remote_node is None):
9196 raise errors.OpPrereqError("Changing the disk template to a mirrored"
9197 " one requires specifying a secondary node",
9202 for nic_op, nic_dict in self.op.nics:
9203 utils.ForceDictType(nic_dict, constants.INIC_PARAMS_TYPES)
9204 if nic_op == constants.DDM_REMOVE:
9207 elif nic_op == constants.DDM_ADD:
9210 if not isinstance(nic_op, int):
9211 raise errors.OpPrereqError("Invalid nic index", errors.ECODE_INVAL)
9212 if not isinstance(nic_dict, dict):
9213 msg = "Invalid nic value: expected dict, got '%s'" % nic_dict
9214 raise errors.OpPrereqError(msg, errors.ECODE_INVAL)
9216 # nic_dict should be a dict
9217 nic_ip = nic_dict.get('ip', None)
9218 if nic_ip is not None:
9219 if nic_ip.lower() == constants.VALUE_NONE:
9220 nic_dict['ip'] = None
9222 if not netutils.IPAddress.IsValid(nic_ip):
9223 raise errors.OpPrereqError("Invalid IP address '%s'" % nic_ip,
9226 nic_bridge = nic_dict.get('bridge', None)
9227 nic_link = nic_dict.get('link', None)
9228 if nic_bridge and nic_link:
9229 raise errors.OpPrereqError("Cannot pass 'bridge' and 'link'"
9230 " at the same time", errors.ECODE_INVAL)
9231 elif nic_bridge and nic_bridge.lower() == constants.VALUE_NONE:
9232 nic_dict['bridge'] = None
9233 elif nic_link and nic_link.lower() == constants.VALUE_NONE:
9234 nic_dict['link'] = None
9236 if nic_op == constants.DDM_ADD:
9237 nic_mac = nic_dict.get('mac', None)
9239 nic_dict['mac'] = constants.VALUE_AUTO
9241 if 'mac' in nic_dict:
9242 nic_mac = nic_dict['mac']
9243 if nic_mac not in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
9244 nic_mac = utils.NormalizeAndValidateMac(nic_mac)
9246 if nic_op != constants.DDM_ADD and nic_mac == constants.VALUE_AUTO:
9247 raise errors.OpPrereqError("'auto' is not a valid MAC address when"
9248 " modifying an existing nic",
9251 if nic_addremove > 1:
9252 raise errors.OpPrereqError("Only one NIC add or remove operation"
9253 " supported at a time", errors.ECODE_INVAL)
9255 def ExpandNames(self):
9256 self._ExpandAndLockInstance()
9257 self.needed_locks[locking.LEVEL_NODE] = []
9258 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
9260 def DeclareLocks(self, level):
9261 if level == locking.LEVEL_NODE:
9262 self._LockInstancesNodes()
9263 if self.op.disk_template and self.op.remote_node:
9264 self.op.remote_node = _ExpandNodeName(self.cfg, self.op.remote_node)
9265 self.needed_locks[locking.LEVEL_NODE].append(self.op.remote_node)
9267 def BuildHooksEnv(self):
9270 This runs on the master, primary and secondaries.
9274 if constants.BE_MEMORY in self.be_new:
9275 args['memory'] = self.be_new[constants.BE_MEMORY]
9276 if constants.BE_VCPUS in self.be_new:
9277 args['vcpus'] = self.be_new[constants.BE_VCPUS]
9278 # TODO: export disk changes. Note: _BuildInstanceHookEnv* don't export disk
9279 # information at all.
9282 nic_override = dict(self.op.nics)
9283 for idx, nic in enumerate(self.instance.nics):
9284 if idx in nic_override:
9285 this_nic_override = nic_override[idx]
9287 this_nic_override = {}
9288 if 'ip' in this_nic_override:
9289 ip = this_nic_override['ip']
9292 if 'mac' in this_nic_override:
9293 mac = this_nic_override['mac']
9296 if idx in self.nic_pnew:
9297 nicparams = self.nic_pnew[idx]
9299 nicparams = self.cluster.SimpleFillNIC(nic.nicparams)
9300 mode = nicparams[constants.NIC_MODE]
9301 link = nicparams[constants.NIC_LINK]
9302 args['nics'].append((ip, mac, mode, link))
9303 if constants.DDM_ADD in nic_override:
9304 ip = nic_override[constants.DDM_ADD].get('ip', None)
9305 mac = nic_override[constants.DDM_ADD]['mac']
9306 nicparams = self.nic_pnew[constants.DDM_ADD]
9307 mode = nicparams[constants.NIC_MODE]
9308 link = nicparams[constants.NIC_LINK]
9309 args['nics'].append((ip, mac, mode, link))
9310 elif constants.DDM_REMOVE in nic_override:
9311 del args['nics'][-1]
9313 env = _BuildInstanceHookEnvByObject(self, self.instance, override=args)
9314 if self.op.disk_template:
9315 env["NEW_DISK_TEMPLATE"] = self.op.disk_template
9316 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
9319 def CheckPrereq(self):
9320 """Check prerequisites.
9322 This only checks the instance list against the existing names.
9325 # checking the new params on the primary/secondary nodes
9327 instance = self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
9328 cluster = self.cluster = self.cfg.GetClusterInfo()
9329 assert self.instance is not None, \
9330 "Cannot retrieve locked instance %s" % self.op.instance_name
9331 pnode = instance.primary_node
9332 nodelist = list(instance.all_nodes)
9335 if self.op.os_name and not self.op.force:
9336 _CheckNodeHasOS(self, instance.primary_node, self.op.os_name,
9337 self.op.force_variant)
9338 instance_os = self.op.os_name
9340 instance_os = instance.os
9342 if self.op.disk_template:
9343 if instance.disk_template == self.op.disk_template:
9344 raise errors.OpPrereqError("Instance already has disk template %s" %
9345 instance.disk_template, errors.ECODE_INVAL)
9347 if (instance.disk_template,
9348 self.op.disk_template) not in self._DISK_CONVERSIONS:
9349 raise errors.OpPrereqError("Unsupported disk template conversion from"
9350 " %s to %s" % (instance.disk_template,
9351 self.op.disk_template),
9353 _CheckInstanceDown(self, instance, "cannot change disk template")
9354 if self.op.disk_template in constants.DTS_NET_MIRROR:
9355 if self.op.remote_node == pnode:
9356 raise errors.OpPrereqError("Given new secondary node %s is the same"
9357 " as the primary node of the instance" %
9358 self.op.remote_node, errors.ECODE_STATE)
9359 _CheckNodeOnline(self, self.op.remote_node)
9360 _CheckNodeNotDrained(self, self.op.remote_node)
9361 # FIXME: here we assume that the old instance type is DT_PLAIN
9362 assert instance.disk_template == constants.DT_PLAIN
9363 disks = [{"size": d.size, "vg": d.logical_id[0]}
9364 for d in instance.disks]
9365 required = _ComputeDiskSizePerVG(self.op.disk_template, disks)
9366 _CheckNodesFreeDiskPerVG(self, [self.op.remote_node], required)
9368 # hvparams processing
9369 if self.op.hvparams:
9370 hv_type = instance.hypervisor
9371 i_hvdict = _GetUpdatedParams(instance.hvparams, self.op.hvparams)
9372 utils.ForceDictType(i_hvdict, constants.HVS_PARAMETER_TYPES)
9373 hv_new = cluster.SimpleFillHV(hv_type, instance.os, i_hvdict)
9376 hypervisor.GetHypervisor(hv_type).CheckParameterSyntax(hv_new)
9377 _CheckHVParams(self, nodelist, instance.hypervisor, hv_new)
9378 self.hv_new = hv_new # the new actual values
9379 self.hv_inst = i_hvdict # the new dict (without defaults)
9381 self.hv_new = self.hv_inst = {}
9383 # beparams processing
9384 if self.op.beparams:
9385 i_bedict = _GetUpdatedParams(instance.beparams, self.op.beparams,
9387 utils.ForceDictType(i_bedict, constants.BES_PARAMETER_TYPES)
9388 be_new = cluster.SimpleFillBE(i_bedict)
9389 self.be_new = be_new # the new actual values
9390 self.be_inst = i_bedict # the new dict (without defaults)
9392 self.be_new = self.be_inst = {}
9394 # osparams processing
9395 if self.op.osparams:
9396 i_osdict = _GetUpdatedParams(instance.osparams, self.op.osparams)
9397 _CheckOSParams(self, True, nodelist, instance_os, i_osdict)
9398 self.os_inst = i_osdict # the new dict (without defaults)
9404 if constants.BE_MEMORY in self.op.beparams and not self.op.force:
9405 mem_check_list = [pnode]
9406 if be_new[constants.BE_AUTO_BALANCE]:
9407 # either we changed auto_balance to yes or it was from before
9408 mem_check_list.extend(instance.secondary_nodes)
9409 instance_info = self.rpc.call_instance_info(pnode, instance.name,
9410 instance.hypervisor)
9411 nodeinfo = self.rpc.call_node_info(mem_check_list, None,
9412 instance.hypervisor)
9413 pninfo = nodeinfo[pnode]
9414 msg = pninfo.fail_msg
9416 # Assume the primary node is unreachable and go ahead
9417 self.warn.append("Can't get info from primary node %s: %s" %
9419 elif not isinstance(pninfo.payload.get('memory_free', None), int):
9420 self.warn.append("Node data from primary node %s doesn't contain"
9421 " free memory information" % pnode)
9422 elif instance_info.fail_msg:
9423 self.warn.append("Can't get instance runtime information: %s" %
9424 instance_info.fail_msg)
9426 if instance_info.payload:
9427 current_mem = int(instance_info.payload['memory'])
9429 # Assume instance not running
9430 # (there is a slight race condition here, but it's not very probable,
9431 # and we have no other way to check)
9433 miss_mem = (be_new[constants.BE_MEMORY] - current_mem -
9434 pninfo.payload['memory_free'])
9436 raise errors.OpPrereqError("This change will prevent the instance"
9437 " from starting, due to %d MB of memory"
9438 " missing on its primary node" % miss_mem,
9441 if be_new[constants.BE_AUTO_BALANCE]:
9442 for node, nres in nodeinfo.items():
9443 if node not in instance.secondary_nodes:
9447 self.warn.append("Can't get info from secondary node %s: %s" %
9449 elif not isinstance(nres.payload.get('memory_free', None), int):
9450 self.warn.append("Secondary node %s didn't return free"
9451 " memory information" % node)
9452 elif be_new[constants.BE_MEMORY] > nres.payload['memory_free']:
9453 self.warn.append("Not enough memory to failover instance to"
9454 " secondary node %s" % node)
9459 for nic_op, nic_dict in self.op.nics:
9460 if nic_op == constants.DDM_REMOVE:
9461 if not instance.nics:
9462 raise errors.OpPrereqError("Instance has no NICs, cannot remove",
9465 if nic_op != constants.DDM_ADD:
9467 if not instance.nics:
9468 raise errors.OpPrereqError("Invalid NIC index %s, instance has"
9469 " no NICs" % nic_op,
9471 if nic_op < 0 or nic_op >= len(instance.nics):
9472 raise errors.OpPrereqError("Invalid NIC index %s, valid values"
9474 (nic_op, len(instance.nics) - 1),
9476 old_nic_params = instance.nics[nic_op].nicparams
9477 old_nic_ip = instance.nics[nic_op].ip
9482 update_params_dict = dict([(key, nic_dict[key])
9483 for key in constants.NICS_PARAMETERS
9484 if key in nic_dict])
9486 if 'bridge' in nic_dict:
9487 update_params_dict[constants.NIC_LINK] = nic_dict['bridge']
9489 new_nic_params = _GetUpdatedParams(old_nic_params,
9491 utils.ForceDictType(new_nic_params, constants.NICS_PARAMETER_TYPES)
9492 new_filled_nic_params = cluster.SimpleFillNIC(new_nic_params)
9493 objects.NIC.CheckParameterSyntax(new_filled_nic_params)
9494 self.nic_pinst[nic_op] = new_nic_params
9495 self.nic_pnew[nic_op] = new_filled_nic_params
9496 new_nic_mode = new_filled_nic_params[constants.NIC_MODE]
9498 if new_nic_mode == constants.NIC_MODE_BRIDGED:
9499 nic_bridge = new_filled_nic_params[constants.NIC_LINK]
9500 msg = self.rpc.call_bridges_exist(pnode, [nic_bridge]).fail_msg
9502 msg = "Error checking bridges on node %s: %s" % (pnode, msg)
9504 self.warn.append(msg)
9506 raise errors.OpPrereqError(msg, errors.ECODE_ENVIRON)
9507 if new_nic_mode == constants.NIC_MODE_ROUTED:
9508 if 'ip' in nic_dict:
9509 nic_ip = nic_dict['ip']
9513 raise errors.OpPrereqError('Cannot set the nic ip to None'
9514 ' on a routed nic', errors.ECODE_INVAL)
9515 if 'mac' in nic_dict:
9516 nic_mac = nic_dict['mac']
9518 raise errors.OpPrereqError('Cannot set the nic mac to None',
9520 elif nic_mac in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
9521 # otherwise generate the mac
9522 nic_dict['mac'] = self.cfg.GenerateMAC(self.proc.GetECId())
9524 # or validate/reserve the current one
9526 self.cfg.ReserveMAC(nic_mac, self.proc.GetECId())
9527 except errors.ReservationError:
9528 raise errors.OpPrereqError("MAC address %s already in use"
9529 " in cluster" % nic_mac,
9530 errors.ECODE_NOTUNIQUE)
9533 if self.op.disks and instance.disk_template == constants.DT_DISKLESS:
9534 raise errors.OpPrereqError("Disk operations not supported for"
9535 " diskless instances",
9537 for disk_op, _ in self.op.disks:
9538 if disk_op == constants.DDM_REMOVE:
9539 if len(instance.disks) == 1:
9540 raise errors.OpPrereqError("Cannot remove the last disk of"
9541 " an instance", errors.ECODE_INVAL)
9542 _CheckInstanceDown(self, instance, "cannot remove disks")
9544 if (disk_op == constants.DDM_ADD and
9545 len(instance.disks) >= constants.MAX_DISKS):
9546 raise errors.OpPrereqError("Instance has too many disks (%d), cannot"
9547 " add more" % constants.MAX_DISKS,
9549 if disk_op not in (constants.DDM_ADD, constants.DDM_REMOVE):
9551 if disk_op < 0 or disk_op >= len(instance.disks):
9552 raise errors.OpPrereqError("Invalid disk index %s, valid values"
9554 (disk_op, len(instance.disks)),
9559 def _ConvertPlainToDrbd(self, feedback_fn):
9560 """Converts an instance from plain to drbd.
9563 feedback_fn("Converting template to drbd")
9564 instance = self.instance
9565 pnode = instance.primary_node
9566 snode = self.op.remote_node
9568 # create a fake disk info for _GenerateDiskTemplate
9569 disk_info = [{"size": d.size, "mode": d.mode,
9570 "vg": d.logical_id[0]} for d in instance.disks]
9571 new_disks = _GenerateDiskTemplate(self, self.op.disk_template,
9572 instance.name, pnode, [snode],
9573 disk_info, None, None, 0, feedback_fn)
9574 info = _GetInstanceInfoText(instance)
9575 feedback_fn("Creating aditional volumes...")
9576 # first, create the missing data and meta devices
9577 for disk in new_disks:
9578 # unfortunately this is... not too nice
9579 _CreateSingleBlockDev(self, pnode, instance, disk.children[1],
9581 for child in disk.children:
9582 _CreateSingleBlockDev(self, snode, instance, child, info, True)
9583 # at this stage, all new LVs have been created, we can rename the
9585 feedback_fn("Renaming original volumes...")
9586 rename_list = [(o, n.children[0].logical_id)
9587 for (o, n) in zip(instance.disks, new_disks)]
9588 result = self.rpc.call_blockdev_rename(pnode, rename_list)
9589 result.Raise("Failed to rename original LVs")
9591 feedback_fn("Initializing DRBD devices...")
9592 # all child devices are in place, we can now create the DRBD devices
9593 for disk in new_disks:
9594 for node in [pnode, snode]:
9595 f_create = node == pnode
9596 _CreateSingleBlockDev(self, node, instance, disk, info, f_create)
9598 # at this point, the instance has been modified
9599 instance.disk_template = constants.DT_DRBD8
9600 instance.disks = new_disks
9601 self.cfg.Update(instance, feedback_fn)
9603 # disks are created, waiting for sync
9604 disk_abort = not _WaitForSync(self, instance,
9605 oneshot=not self.op.wait_for_sync)
9607 raise errors.OpExecError("There are some degraded disks for"
9608 " this instance, please cleanup manually")
9610 def _ConvertDrbdToPlain(self, feedback_fn):
9611 """Converts an instance from drbd to plain.
9614 instance = self.instance
9615 assert len(instance.secondary_nodes) == 1
9616 pnode = instance.primary_node
9617 snode = instance.secondary_nodes[0]
9618 feedback_fn("Converting template to plain")
9620 old_disks = instance.disks
9621 new_disks = [d.children[0] for d in old_disks]
9623 # copy over size and mode
9624 for parent, child in zip(old_disks, new_disks):
9625 child.size = parent.size
9626 child.mode = parent.mode
9628 # update instance structure
9629 instance.disks = new_disks
9630 instance.disk_template = constants.DT_PLAIN
9631 self.cfg.Update(instance, feedback_fn)
9633 feedback_fn("Removing volumes on the secondary node...")
9634 for disk in old_disks:
9635 self.cfg.SetDiskID(disk, snode)
9636 msg = self.rpc.call_blockdev_remove(snode, disk).fail_msg
9638 self.LogWarning("Could not remove block device %s on node %s,"
9639 " continuing anyway: %s", disk.iv_name, snode, msg)
9641 feedback_fn("Removing unneeded volumes on the primary node...")
9642 for idx, disk in enumerate(old_disks):
9643 meta = disk.children[1]
9644 self.cfg.SetDiskID(meta, pnode)
9645 msg = self.rpc.call_blockdev_remove(pnode, meta).fail_msg
9647 self.LogWarning("Could not remove metadata for disk %d on node %s,"
9648 " continuing anyway: %s", idx, pnode, msg)
9650 def Exec(self, feedback_fn):
9651 """Modifies an instance.
9653 All parameters take effect only at the next restart of the instance.
9656 # Process here the warnings from CheckPrereq, as we don't have a
9657 # feedback_fn there.
9658 for warn in self.warn:
9659 feedback_fn("WARNING: %s" % warn)
9662 instance = self.instance
9664 for disk_op, disk_dict in self.op.disks:
9665 if disk_op == constants.DDM_REMOVE:
9666 # remove the last disk
9667 device = instance.disks.pop()
9668 device_idx = len(instance.disks)
9669 for node, disk in device.ComputeNodeTree(instance.primary_node):
9670 self.cfg.SetDiskID(disk, node)
9671 msg = self.rpc.call_blockdev_remove(node, disk).fail_msg
9673 self.LogWarning("Could not remove disk/%d on node %s: %s,"
9674 " continuing anyway", device_idx, node, msg)
9675 result.append(("disk/%d" % device_idx, "remove"))
9676 elif disk_op == constants.DDM_ADD:
9678 if instance.disk_template == constants.DT_FILE:
9679 file_driver, file_path = instance.disks[0].logical_id
9680 file_path = os.path.dirname(file_path)
9682 file_driver = file_path = None
9683 disk_idx_base = len(instance.disks)
9684 new_disk = _GenerateDiskTemplate(self,
9685 instance.disk_template,
9686 instance.name, instance.primary_node,
9687 instance.secondary_nodes,
9691 disk_idx_base, feedback_fn)[0]
9692 instance.disks.append(new_disk)
9693 info = _GetInstanceInfoText(instance)
9695 logging.info("Creating volume %s for instance %s",
9696 new_disk.iv_name, instance.name)
9697 # Note: this needs to be kept in sync with _CreateDisks
9699 for node in instance.all_nodes:
9700 f_create = node == instance.primary_node
9702 _CreateBlockDev(self, node, instance, new_disk,
9703 f_create, info, f_create)
9704 except errors.OpExecError, err:
9705 self.LogWarning("Failed to create volume %s (%s) on"
9707 new_disk.iv_name, new_disk, node, err)
9708 result.append(("disk/%d" % disk_idx_base, "add:size=%s,mode=%s" %
9709 (new_disk.size, new_disk.mode)))
9711 # change a given disk
9712 instance.disks[disk_op].mode = disk_dict['mode']
9713 result.append(("disk.mode/%d" % disk_op, disk_dict['mode']))
9715 if self.op.disk_template:
9716 r_shut = _ShutdownInstanceDisks(self, instance)
9718 raise errors.OpExecError("Cannot shutdown instance disks, unable to"
9719 " proceed with disk template conversion")
9720 mode = (instance.disk_template, self.op.disk_template)
9722 self._DISK_CONVERSIONS[mode](self, feedback_fn)
9724 self.cfg.ReleaseDRBDMinors(instance.name)
9726 result.append(("disk_template", self.op.disk_template))
9729 for nic_op, nic_dict in self.op.nics:
9730 if nic_op == constants.DDM_REMOVE:
9731 # remove the last nic
9732 del instance.nics[-1]
9733 result.append(("nic.%d" % len(instance.nics), "remove"))
9734 elif nic_op == constants.DDM_ADD:
9735 # mac and bridge should be set, by now
9736 mac = nic_dict['mac']
9737 ip = nic_dict.get('ip', None)
9738 nicparams = self.nic_pinst[constants.DDM_ADD]
9739 new_nic = objects.NIC(mac=mac, ip=ip, nicparams=nicparams)
9740 instance.nics.append(new_nic)
9741 result.append(("nic.%d" % (len(instance.nics) - 1),
9742 "add:mac=%s,ip=%s,mode=%s,link=%s" %
9743 (new_nic.mac, new_nic.ip,
9744 self.nic_pnew[constants.DDM_ADD][constants.NIC_MODE],
9745 self.nic_pnew[constants.DDM_ADD][constants.NIC_LINK]
9748 for key in 'mac', 'ip':
9750 setattr(instance.nics[nic_op], key, nic_dict[key])
9751 if nic_op in self.nic_pinst:
9752 instance.nics[nic_op].nicparams = self.nic_pinst[nic_op]
9753 for key, val in nic_dict.iteritems():
9754 result.append(("nic.%s/%d" % (key, nic_op), val))
9757 if self.op.hvparams:
9758 instance.hvparams = self.hv_inst
9759 for key, val in self.op.hvparams.iteritems():
9760 result.append(("hv/%s" % key, val))
9763 if self.op.beparams:
9764 instance.beparams = self.be_inst
9765 for key, val in self.op.beparams.iteritems():
9766 result.append(("be/%s" % key, val))
9770 instance.os = self.op.os_name
9773 if self.op.osparams:
9774 instance.osparams = self.os_inst
9775 for key, val in self.op.osparams.iteritems():
9776 result.append(("os/%s" % key, val))
9778 self.cfg.Update(instance, feedback_fn)
9782 _DISK_CONVERSIONS = {
9783 (constants.DT_PLAIN, constants.DT_DRBD8): _ConvertPlainToDrbd,
9784 (constants.DT_DRBD8, constants.DT_PLAIN): _ConvertDrbdToPlain,
9788 class LUBackupQuery(NoHooksLU):
9789 """Query the exports list
9794 def ExpandNames(self):
9795 self.needed_locks = {}
9796 self.share_locks[locking.LEVEL_NODE] = 1
9797 if not self.op.nodes:
9798 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
9800 self.needed_locks[locking.LEVEL_NODE] = \
9801 _GetWantedNodes(self, self.op.nodes)
9803 def Exec(self, feedback_fn):
9804 """Compute the list of all the exported system images.
9807 @return: a dictionary with the structure node->(export-list)
9808 where export-list is a list of the instances exported on
9812 self.nodes = self.acquired_locks[locking.LEVEL_NODE]
9813 rpcresult = self.rpc.call_export_list(self.nodes)
9815 for node in rpcresult:
9816 if rpcresult[node].fail_msg:
9817 result[node] = False
9819 result[node] = rpcresult[node].payload
9824 class LUBackupPrepare(NoHooksLU):
9825 """Prepares an instance for an export and returns useful information.
9830 def ExpandNames(self):
9831 self._ExpandAndLockInstance()
9833 def CheckPrereq(self):
9834 """Check prerequisites.
9837 instance_name = self.op.instance_name
9839 self.instance = self.cfg.GetInstanceInfo(instance_name)
9840 assert self.instance is not None, \
9841 "Cannot retrieve locked instance %s" % self.op.instance_name
9842 _CheckNodeOnline(self, self.instance.primary_node)
9844 self._cds = _GetClusterDomainSecret()
9846 def Exec(self, feedback_fn):
9847 """Prepares an instance for an export.
9850 instance = self.instance
9852 if self.op.mode == constants.EXPORT_MODE_REMOTE:
9853 salt = utils.GenerateSecret(8)
9855 feedback_fn("Generating X509 certificate on %s" % instance.primary_node)
9856 result = self.rpc.call_x509_cert_create(instance.primary_node,
9857 constants.RIE_CERT_VALIDITY)
9858 result.Raise("Can't create X509 key and certificate on %s" % result.node)
9860 (name, cert_pem) = result.payload
9862 cert = OpenSSL.crypto.load_certificate(OpenSSL.crypto.FILETYPE_PEM,
9866 "handshake": masterd.instance.ComputeRemoteExportHandshake(self._cds),
9867 "x509_key_name": (name, utils.Sha1Hmac(self._cds, name, salt=salt),
9869 "x509_ca": utils.SignX509Certificate(cert, self._cds, salt),
9875 class LUBackupExport(LogicalUnit):
9876 """Export an instance to an image in the cluster.
9879 HPATH = "instance-export"
9880 HTYPE = constants.HTYPE_INSTANCE
9883 def CheckArguments(self):
9884 """Check the arguments.
9887 self.x509_key_name = self.op.x509_key_name
9888 self.dest_x509_ca_pem = self.op.destination_x509_ca
9890 if self.op.mode == constants.EXPORT_MODE_REMOTE:
9891 if not self.x509_key_name:
9892 raise errors.OpPrereqError("Missing X509 key name for encryption",
9895 if not self.dest_x509_ca_pem:
9896 raise errors.OpPrereqError("Missing destination X509 CA",
9899 def ExpandNames(self):
9900 self._ExpandAndLockInstance()
9902 # Lock all nodes for local exports
9903 if self.op.mode == constants.EXPORT_MODE_LOCAL:
9904 # FIXME: lock only instance primary and destination node
9906 # Sad but true, for now we have do lock all nodes, as we don't know where
9907 # the previous export might be, and in this LU we search for it and
9908 # remove it from its current node. In the future we could fix this by:
9909 # - making a tasklet to search (share-lock all), then create the
9910 # new one, then one to remove, after
9911 # - removing the removal operation altogether
9912 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
9914 def DeclareLocks(self, level):
9915 """Last minute lock declaration."""
9916 # All nodes are locked anyway, so nothing to do here.
9918 def BuildHooksEnv(self):
9921 This will run on the master, primary node and target node.
9925 "EXPORT_MODE": self.op.mode,
9926 "EXPORT_NODE": self.op.target_node,
9927 "EXPORT_DO_SHUTDOWN": self.op.shutdown,
9928 "SHUTDOWN_TIMEOUT": self.op.shutdown_timeout,
9929 # TODO: Generic function for boolean env variables
9930 "REMOVE_INSTANCE": str(bool(self.op.remove_instance)),
9933 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
9935 nl = [self.cfg.GetMasterNode(), self.instance.primary_node]
9937 if self.op.mode == constants.EXPORT_MODE_LOCAL:
9938 nl.append(self.op.target_node)
9942 def CheckPrereq(self):
9943 """Check prerequisites.
9945 This checks that the instance and node names are valid.
9948 instance_name = self.op.instance_name
9950 self.instance = self.cfg.GetInstanceInfo(instance_name)
9951 assert self.instance is not None, \
9952 "Cannot retrieve locked instance %s" % self.op.instance_name
9953 _CheckNodeOnline(self, self.instance.primary_node)
9955 if (self.op.remove_instance and self.instance.admin_up and
9956 not self.op.shutdown):
9957 raise errors.OpPrereqError("Can not remove instance without shutting it"
9960 if self.op.mode == constants.EXPORT_MODE_LOCAL:
9961 self.op.target_node = _ExpandNodeName(self.cfg, self.op.target_node)
9962 self.dst_node = self.cfg.GetNodeInfo(self.op.target_node)
9963 assert self.dst_node is not None
9965 _CheckNodeOnline(self, self.dst_node.name)
9966 _CheckNodeNotDrained(self, self.dst_node.name)
9969 self.dest_disk_info = None
9970 self.dest_x509_ca = None
9972 elif self.op.mode == constants.EXPORT_MODE_REMOTE:
9973 self.dst_node = None
9975 if len(self.op.target_node) != len(self.instance.disks):
9976 raise errors.OpPrereqError(("Received destination information for %s"
9977 " disks, but instance %s has %s disks") %
9978 (len(self.op.target_node), instance_name,
9979 len(self.instance.disks)),
9982 cds = _GetClusterDomainSecret()
9984 # Check X509 key name
9986 (key_name, hmac_digest, hmac_salt) = self.x509_key_name
9987 except (TypeError, ValueError), err:
9988 raise errors.OpPrereqError("Invalid data for X509 key name: %s" % err)
9990 if not utils.VerifySha1Hmac(cds, key_name, hmac_digest, salt=hmac_salt):
9991 raise errors.OpPrereqError("HMAC for X509 key name is wrong",
9994 # Load and verify CA
9996 (cert, _) = utils.LoadSignedX509Certificate(self.dest_x509_ca_pem, cds)
9997 except OpenSSL.crypto.Error, err:
9998 raise errors.OpPrereqError("Unable to load destination X509 CA (%s)" %
9999 (err, ), errors.ECODE_INVAL)
10001 (errcode, msg) = utils.VerifyX509Certificate(cert, None, None)
10002 if errcode is not None:
10003 raise errors.OpPrereqError("Invalid destination X509 CA (%s)" %
10004 (msg, ), errors.ECODE_INVAL)
10006 self.dest_x509_ca = cert
10008 # Verify target information
10010 for idx, disk_data in enumerate(self.op.target_node):
10012 (host, port, magic) = \
10013 masterd.instance.CheckRemoteExportDiskInfo(cds, idx, disk_data)
10014 except errors.GenericError, err:
10015 raise errors.OpPrereqError("Target info for disk %s: %s" %
10016 (idx, err), errors.ECODE_INVAL)
10018 disk_info.append((host, port, magic))
10020 assert len(disk_info) == len(self.op.target_node)
10021 self.dest_disk_info = disk_info
10024 raise errors.ProgrammerError("Unhandled export mode %r" %
10027 # instance disk type verification
10028 # TODO: Implement export support for file-based disks
10029 for disk in self.instance.disks:
10030 if disk.dev_type == constants.LD_FILE:
10031 raise errors.OpPrereqError("Export not supported for instances with"
10032 " file-based disks", errors.ECODE_INVAL)
10034 def _CleanupExports(self, feedback_fn):
10035 """Removes exports of current instance from all other nodes.
10037 If an instance in a cluster with nodes A..D was exported to node C, its
10038 exports will be removed from the nodes A, B and D.
10041 assert self.op.mode != constants.EXPORT_MODE_REMOTE
10043 nodelist = self.cfg.GetNodeList()
10044 nodelist.remove(self.dst_node.name)
10046 # on one-node clusters nodelist will be empty after the removal
10047 # if we proceed the backup would be removed because OpBackupQuery
10048 # substitutes an empty list with the full cluster node list.
10049 iname = self.instance.name
10051 feedback_fn("Removing old exports for instance %s" % iname)
10052 exportlist = self.rpc.call_export_list(nodelist)
10053 for node in exportlist:
10054 if exportlist[node].fail_msg:
10056 if iname in exportlist[node].payload:
10057 msg = self.rpc.call_export_remove(node, iname).fail_msg
10059 self.LogWarning("Could not remove older export for instance %s"
10060 " on node %s: %s", iname, node, msg)
10062 def Exec(self, feedback_fn):
10063 """Export an instance to an image in the cluster.
10066 assert self.op.mode in constants.EXPORT_MODES
10068 instance = self.instance
10069 src_node = instance.primary_node
10071 if self.op.shutdown:
10072 # shutdown the instance, but not the disks
10073 feedback_fn("Shutting down instance %s" % instance.name)
10074 result = self.rpc.call_instance_shutdown(src_node, instance,
10075 self.op.shutdown_timeout)
10076 # TODO: Maybe ignore failures if ignore_remove_failures is set
10077 result.Raise("Could not shutdown instance %s on"
10078 " node %s" % (instance.name, src_node))
10080 # set the disks ID correctly since call_instance_start needs the
10081 # correct drbd minor to create the symlinks
10082 for disk in instance.disks:
10083 self.cfg.SetDiskID(disk, src_node)
10085 activate_disks = (not instance.admin_up)
10088 # Activate the instance disks if we'exporting a stopped instance
10089 feedback_fn("Activating disks for %s" % instance.name)
10090 _StartInstanceDisks(self, instance, None)
10093 helper = masterd.instance.ExportInstanceHelper(self, feedback_fn,
10096 helper.CreateSnapshots()
10098 if (self.op.shutdown and instance.admin_up and
10099 not self.op.remove_instance):
10100 assert not activate_disks
10101 feedback_fn("Starting instance %s" % instance.name)
10102 result = self.rpc.call_instance_start(src_node, instance, None, None)
10103 msg = result.fail_msg
10105 feedback_fn("Failed to start instance: %s" % msg)
10106 _ShutdownInstanceDisks(self, instance)
10107 raise errors.OpExecError("Could not start instance: %s" % msg)
10109 if self.op.mode == constants.EXPORT_MODE_LOCAL:
10110 (fin_resu, dresults) = helper.LocalExport(self.dst_node)
10111 elif self.op.mode == constants.EXPORT_MODE_REMOTE:
10112 connect_timeout = constants.RIE_CONNECT_TIMEOUT
10113 timeouts = masterd.instance.ImportExportTimeouts(connect_timeout)
10115 (key_name, _, _) = self.x509_key_name
10118 OpenSSL.crypto.dump_certificate(OpenSSL.crypto.FILETYPE_PEM,
10121 (fin_resu, dresults) = helper.RemoteExport(self.dest_disk_info,
10122 key_name, dest_ca_pem,
10127 # Check for backwards compatibility
10128 assert len(dresults) == len(instance.disks)
10129 assert compat.all(isinstance(i, bool) for i in dresults), \
10130 "Not all results are boolean: %r" % dresults
10134 feedback_fn("Deactivating disks for %s" % instance.name)
10135 _ShutdownInstanceDisks(self, instance)
10137 if not (compat.all(dresults) and fin_resu):
10140 failures.append("export finalization")
10141 if not compat.all(dresults):
10142 fdsk = utils.CommaJoin(idx for (idx, dsk) in enumerate(dresults)
10144 failures.append("disk export: disk(s) %s" % fdsk)
10146 raise errors.OpExecError("Export failed, errors in %s" %
10147 utils.CommaJoin(failures))
10149 # At this point, the export was successful, we can cleanup/finish
10151 # Remove instance if requested
10152 if self.op.remove_instance:
10153 feedback_fn("Removing instance %s" % instance.name)
10154 _RemoveInstance(self, feedback_fn, instance,
10155 self.op.ignore_remove_failures)
10157 if self.op.mode == constants.EXPORT_MODE_LOCAL:
10158 self._CleanupExports(feedback_fn)
10160 return fin_resu, dresults
10163 class LUBackupRemove(NoHooksLU):
10164 """Remove exports related to the named instance.
10169 def ExpandNames(self):
10170 self.needed_locks = {}
10171 # We need all nodes to be locked in order for RemoveExport to work, but we
10172 # don't need to lock the instance itself, as nothing will happen to it (and
10173 # we can remove exports also for a removed instance)
10174 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
10176 def Exec(self, feedback_fn):
10177 """Remove any export.
10180 instance_name = self.cfg.ExpandInstanceName(self.op.instance_name)
10181 # If the instance was not found we'll try with the name that was passed in.
10182 # This will only work if it was an FQDN, though.
10184 if not instance_name:
10186 instance_name = self.op.instance_name
10188 locked_nodes = self.acquired_locks[locking.LEVEL_NODE]
10189 exportlist = self.rpc.call_export_list(locked_nodes)
10191 for node in exportlist:
10192 msg = exportlist[node].fail_msg
10194 self.LogWarning("Failed to query node %s (continuing): %s", node, msg)
10196 if instance_name in exportlist[node].payload:
10198 result = self.rpc.call_export_remove(node, instance_name)
10199 msg = result.fail_msg
10201 logging.error("Could not remove export for instance %s"
10202 " on node %s: %s", instance_name, node, msg)
10204 if fqdn_warn and not found:
10205 feedback_fn("Export not found. If trying to remove an export belonging"
10206 " to a deleted instance please use its Fully Qualified"
10210 class LUGroupAdd(LogicalUnit):
10211 """Logical unit for creating node groups.
10214 HPATH = "group-add"
10215 HTYPE = constants.HTYPE_GROUP
10218 def ExpandNames(self):
10219 # We need the new group's UUID here so that we can create and acquire the
10220 # corresponding lock. Later, in Exec(), we'll indicate to cfg.AddNodeGroup
10221 # that it should not check whether the UUID exists in the configuration.
10222 self.group_uuid = self.cfg.GenerateUniqueID(self.proc.GetECId())
10223 self.needed_locks = {}
10224 self.add_locks[locking.LEVEL_NODEGROUP] = self.group_uuid
10226 def CheckPrereq(self):
10227 """Check prerequisites.
10229 This checks that the given group name is not an existing node group
10234 existing_uuid = self.cfg.LookupNodeGroup(self.op.group_name)
10235 except errors.OpPrereqError:
10238 raise errors.OpPrereqError("Desired group name '%s' already exists as a"
10239 " node group (UUID: %s)" %
10240 (self.op.group_name, existing_uuid),
10241 errors.ECODE_EXISTS)
10243 if self.op.ndparams:
10244 utils.ForceDictType(self.op.ndparams, constants.NDS_PARAMETER_TYPES)
10246 def BuildHooksEnv(self):
10247 """Build hooks env.
10251 "GROUP_NAME": self.op.group_name,
10253 mn = self.cfg.GetMasterNode()
10254 return env, [mn], [mn]
10256 def Exec(self, feedback_fn):
10257 """Add the node group to the cluster.
10260 group_obj = objects.NodeGroup(name=self.op.group_name, members=[],
10261 uuid=self.group_uuid,
10262 alloc_policy=self.op.alloc_policy,
10263 ndparams=self.op.ndparams)
10265 self.cfg.AddNodeGroup(group_obj, self.proc.GetECId(), check_uuid=False)
10266 del self.remove_locks[locking.LEVEL_NODEGROUP]
10269 class LUGroupAssignNodes(NoHooksLU):
10270 """Logical unit for assigning nodes to groups.
10275 def ExpandNames(self):
10276 # These raise errors.OpPrereqError on their own:
10277 self.group_uuid = self.cfg.LookupNodeGroup(self.op.group_name)
10278 self.op.nodes = _GetWantedNodes(self, self.op.nodes)
10280 # We want to lock all the affected nodes and groups. We have readily
10281 # available the list of nodes, and the *destination* group. To gather the
10282 # list of "source" groups, we need to fetch node information later on.
10283 self.needed_locks = {
10284 locking.LEVEL_NODEGROUP: set([self.group_uuid]),
10285 locking.LEVEL_NODE: self.op.nodes,
10288 def DeclareLocks(self, level):
10289 if level == locking.LEVEL_NODEGROUP:
10290 assert len(self.needed_locks[locking.LEVEL_NODEGROUP]) == 1
10292 # Try to get all affected nodes' groups without having the group or node
10293 # lock yet. Needs verification later in the code flow.
10294 groups = self.cfg.GetNodeGroupsFromNodes(self.op.nodes)
10296 self.needed_locks[locking.LEVEL_NODEGROUP].update(groups)
10298 def CheckPrereq(self):
10299 """Check prerequisites.
10302 assert self.needed_locks[locking.LEVEL_NODEGROUP]
10303 assert (frozenset(self.acquired_locks[locking.LEVEL_NODE]) ==
10304 frozenset(self.op.nodes))
10306 expected_locks = (set([self.group_uuid]) |
10307 self.cfg.GetNodeGroupsFromNodes(self.op.nodes))
10308 actual_locks = self.acquired_locks[locking.LEVEL_NODEGROUP]
10309 if actual_locks != expected_locks:
10310 raise errors.OpExecError("Nodes changed groups since locks were acquired,"
10311 " current groups are '%s', used to be '%s'" %
10312 (utils.CommaJoin(expected_locks),
10313 utils.CommaJoin(actual_locks)))
10315 self.node_data = self.cfg.GetAllNodesInfo()
10316 self.group = self.cfg.GetNodeGroup(self.group_uuid)
10317 instance_data = self.cfg.GetAllInstancesInfo()
10319 if self.group is None:
10320 raise errors.OpExecError("Could not retrieve group '%s' (UUID: %s)" %
10321 (self.op.group_name, self.group_uuid))
10323 (new_splits, previous_splits) = \
10324 self.CheckAssignmentForSplitInstances([(node, self.group_uuid)
10325 for node in self.op.nodes],
10326 self.node_data, instance_data)
10329 fmt_new_splits = utils.CommaJoin(utils.NiceSort(new_splits))
10331 if not self.op.force:
10332 raise errors.OpExecError("The following instances get split by this"
10333 " change and --force was not given: %s" %
10336 self.LogWarning("This operation will split the following instances: %s",
10339 if previous_splits:
10340 self.LogWarning("In addition, these already-split instances continue"
10341 " to be split across groups: %s",
10342 utils.CommaJoin(utils.NiceSort(previous_splits)))
10344 def Exec(self, feedback_fn):
10345 """Assign nodes to a new group.
10348 for node in self.op.nodes:
10349 self.node_data[node].group = self.group_uuid
10351 # FIXME: Depends on side-effects of modifying the result of
10352 # C{cfg.GetAllNodesInfo}
10354 self.cfg.Update(self.group, feedback_fn) # Saves all modified nodes.
10357 def CheckAssignmentForSplitInstances(changes, node_data, instance_data):
10358 """Check for split instances after a node assignment.
10360 This method considers a series of node assignments as an atomic operation,
10361 and returns information about split instances after applying the set of
10364 In particular, it returns information about newly split instances, and
10365 instances that were already split, and remain so after the change.
10367 Only instances whose disk template is listed in constants.DTS_NET_MIRROR are
10370 @type changes: list of (node_name, new_group_uuid) pairs.
10371 @param changes: list of node assignments to consider.
10372 @param node_data: a dict with data for all nodes
10373 @param instance_data: a dict with all instances to consider
10374 @rtype: a two-tuple
10375 @return: a list of instances that were previously okay and result split as a
10376 consequence of this change, and a list of instances that were previously
10377 split and this change does not fix.
10380 changed_nodes = dict((node, group) for node, group in changes
10381 if node_data[node].group != group)
10383 all_split_instances = set()
10384 previously_split_instances = set()
10386 def InstanceNodes(instance):
10387 return [instance.primary_node] + list(instance.secondary_nodes)
10389 for inst in instance_data.values():
10390 if inst.disk_template not in constants.DTS_NET_MIRROR:
10393 instance_nodes = InstanceNodes(inst)
10395 if len(set(node_data[node].group for node in instance_nodes)) > 1:
10396 previously_split_instances.add(inst.name)
10398 if len(set(changed_nodes.get(node, node_data[node].group)
10399 for node in instance_nodes)) > 1:
10400 all_split_instances.add(inst.name)
10402 return (list(all_split_instances - previously_split_instances),
10403 list(previously_split_instances & all_split_instances))
10406 class _GroupQuery(_QueryBase):
10408 FIELDS = query.GROUP_FIELDS
10410 def ExpandNames(self, lu):
10411 lu.needed_locks = {}
10413 self._all_groups = lu.cfg.GetAllNodeGroupsInfo()
10414 name_to_uuid = dict((g.name, g.uuid) for g in self._all_groups.values())
10417 self.wanted = [name_to_uuid[name]
10418 for name in utils.NiceSort(name_to_uuid.keys())]
10420 # Accept names to be either names or UUIDs.
10423 all_uuid = frozenset(self._all_groups.keys())
10425 for name in self.names:
10426 if name in all_uuid:
10427 self.wanted.append(name)
10428 elif name in name_to_uuid:
10429 self.wanted.append(name_to_uuid[name])
10431 missing.append(name)
10434 raise errors.OpPrereqError("Some groups do not exist: %s" %
10435 utils.CommaJoin(missing),
10436 errors.ECODE_NOENT)
10438 def DeclareLocks(self, lu, level):
10441 def _GetQueryData(self, lu):
10442 """Computes the list of node groups and their attributes.
10445 do_nodes = query.GQ_NODE in self.requested_data
10446 do_instances = query.GQ_INST in self.requested_data
10448 group_to_nodes = None
10449 group_to_instances = None
10451 # For GQ_NODE, we need to map group->[nodes], and group->[instances] for
10452 # GQ_INST. The former is attainable with just GetAllNodesInfo(), but for the
10453 # latter GetAllInstancesInfo() is not enough, for we have to go through
10454 # instance->node. Hence, we will need to process nodes even if we only need
10455 # instance information.
10456 if do_nodes or do_instances:
10457 all_nodes = lu.cfg.GetAllNodesInfo()
10458 group_to_nodes = dict((uuid, []) for uuid in self.wanted)
10461 for node in all_nodes.values():
10462 if node.group in group_to_nodes:
10463 group_to_nodes[node.group].append(node.name)
10464 node_to_group[node.name] = node.group
10467 all_instances = lu.cfg.GetAllInstancesInfo()
10468 group_to_instances = dict((uuid, []) for uuid in self.wanted)
10470 for instance in all_instances.values():
10471 node = instance.primary_node
10472 if node in node_to_group:
10473 group_to_instances[node_to_group[node]].append(instance.name)
10476 # Do not pass on node information if it was not requested.
10477 group_to_nodes = None
10479 return query.GroupQueryData([self._all_groups[uuid]
10480 for uuid in self.wanted],
10481 group_to_nodes, group_to_instances)
10484 class LUGroupQuery(NoHooksLU):
10485 """Logical unit for querying node groups.
10490 def CheckArguments(self):
10491 self.gq = _GroupQuery(self.op.names, self.op.output_fields, False)
10493 def ExpandNames(self):
10494 self.gq.ExpandNames(self)
10496 def Exec(self, feedback_fn):
10497 return self.gq.OldStyleQuery(self)
10500 class LUGroupSetParams(LogicalUnit):
10501 """Modifies the parameters of a node group.
10504 HPATH = "group-modify"
10505 HTYPE = constants.HTYPE_GROUP
10508 def CheckArguments(self):
10511 self.op.alloc_policy,
10514 if all_changes.count(None) == len(all_changes):
10515 raise errors.OpPrereqError("Please pass at least one modification",
10516 errors.ECODE_INVAL)
10518 def ExpandNames(self):
10519 # This raises errors.OpPrereqError on its own:
10520 self.group_uuid = self.cfg.LookupNodeGroup(self.op.group_name)
10522 self.needed_locks = {
10523 locking.LEVEL_NODEGROUP: [self.group_uuid],
10526 def CheckPrereq(self):
10527 """Check prerequisites.
10530 self.group = self.cfg.GetNodeGroup(self.group_uuid)
10532 if self.group is None:
10533 raise errors.OpExecError("Could not retrieve group '%s' (UUID: %s)" %
10534 (self.op.group_name, self.group_uuid))
10536 if self.op.ndparams:
10537 new_ndparams = _GetUpdatedParams(self.group.ndparams, self.op.ndparams)
10538 utils.ForceDictType(self.op.ndparams, constants.NDS_PARAMETER_TYPES)
10539 self.new_ndparams = new_ndparams
10541 def BuildHooksEnv(self):
10542 """Build hooks env.
10546 "GROUP_NAME": self.op.group_name,
10547 "NEW_ALLOC_POLICY": self.op.alloc_policy,
10549 mn = self.cfg.GetMasterNode()
10550 return env, [mn], [mn]
10552 def Exec(self, feedback_fn):
10553 """Modifies the node group.
10558 if self.op.ndparams:
10559 self.group.ndparams = self.new_ndparams
10560 result.append(("ndparams", str(self.group.ndparams)))
10562 if self.op.alloc_policy:
10563 self.group.alloc_policy = self.op.alloc_policy
10565 self.cfg.Update(self.group, feedback_fn)
10570 class LUGroupRemove(LogicalUnit):
10571 HPATH = "group-remove"
10572 HTYPE = constants.HTYPE_GROUP
10575 def ExpandNames(self):
10576 # This will raises errors.OpPrereqError on its own:
10577 self.group_uuid = self.cfg.LookupNodeGroup(self.op.group_name)
10578 self.needed_locks = {
10579 locking.LEVEL_NODEGROUP: [self.group_uuid],
10582 def CheckPrereq(self):
10583 """Check prerequisites.
10585 This checks that the given group name exists as a node group, that is
10586 empty (i.e., contains no nodes), and that is not the last group of the
10590 # Verify that the group is empty.
10591 group_nodes = [node.name
10592 for node in self.cfg.GetAllNodesInfo().values()
10593 if node.group == self.group_uuid]
10596 raise errors.OpPrereqError("Group '%s' not empty, has the following"
10598 (self.op.group_name,
10599 utils.CommaJoin(utils.NiceSort(group_nodes))),
10600 errors.ECODE_STATE)
10602 # Verify the cluster would not be left group-less.
10603 if len(self.cfg.GetNodeGroupList()) == 1:
10604 raise errors.OpPrereqError("Group '%s' is the only group,"
10605 " cannot be removed" %
10606 self.op.group_name,
10607 errors.ECODE_STATE)
10609 def BuildHooksEnv(self):
10610 """Build hooks env.
10614 "GROUP_NAME": self.op.group_name,
10616 mn = self.cfg.GetMasterNode()
10617 return env, [mn], [mn]
10619 def Exec(self, feedback_fn):
10620 """Remove the node group.
10624 self.cfg.RemoveNodeGroup(self.group_uuid)
10625 except errors.ConfigurationError:
10626 raise errors.OpExecError("Group '%s' with UUID %s disappeared" %
10627 (self.op.group_name, self.group_uuid))
10629 self.remove_locks[locking.LEVEL_NODEGROUP] = self.group_uuid
10632 class LUGroupRename(LogicalUnit):
10633 HPATH = "group-rename"
10634 HTYPE = constants.HTYPE_GROUP
10637 def ExpandNames(self):
10638 # This raises errors.OpPrereqError on its own:
10639 self.group_uuid = self.cfg.LookupNodeGroup(self.op.old_name)
10641 self.needed_locks = {
10642 locking.LEVEL_NODEGROUP: [self.group_uuid],
10645 def CheckPrereq(self):
10646 """Check prerequisites.
10648 This checks that the given old_name exists as a node group, and that
10653 new_name_uuid = self.cfg.LookupNodeGroup(self.op.new_name)
10654 except errors.OpPrereqError:
10657 raise errors.OpPrereqError("Desired new name '%s' clashes with existing"
10658 " node group (UUID: %s)" %
10659 (self.op.new_name, new_name_uuid),
10660 errors.ECODE_EXISTS)
10662 def BuildHooksEnv(self):
10663 """Build hooks env.
10667 "OLD_NAME": self.op.old_name,
10668 "NEW_NAME": self.op.new_name,
10671 mn = self.cfg.GetMasterNode()
10672 all_nodes = self.cfg.GetAllNodesInfo()
10674 all_nodes.pop(mn, None)
10676 for node in all_nodes.values():
10677 if node.group == self.group_uuid:
10678 run_nodes.append(node.name)
10680 return env, run_nodes, run_nodes
10682 def Exec(self, feedback_fn):
10683 """Rename the node group.
10686 group = self.cfg.GetNodeGroup(self.group_uuid)
10689 raise errors.OpExecError("Could not retrieve group '%s' (UUID: %s)" %
10690 (self.op.old_name, self.group_uuid))
10692 group.name = self.op.new_name
10693 self.cfg.Update(group, feedback_fn)
10695 return self.op.new_name
10698 class TagsLU(NoHooksLU): # pylint: disable-msg=W0223
10699 """Generic tags LU.
10701 This is an abstract class which is the parent of all the other tags LUs.
10705 def ExpandNames(self):
10706 self.needed_locks = {}
10707 if self.op.kind == constants.TAG_NODE:
10708 self.op.name = _ExpandNodeName(self.cfg, self.op.name)
10709 self.needed_locks[locking.LEVEL_NODE] = self.op.name
10710 elif self.op.kind == constants.TAG_INSTANCE:
10711 self.op.name = _ExpandInstanceName(self.cfg, self.op.name)
10712 self.needed_locks[locking.LEVEL_INSTANCE] = self.op.name
10714 # FIXME: Acquire BGL for cluster tag operations (as of this writing it's
10715 # not possible to acquire the BGL based on opcode parameters)
10717 def CheckPrereq(self):
10718 """Check prerequisites.
10721 if self.op.kind == constants.TAG_CLUSTER:
10722 self.target = self.cfg.GetClusterInfo()
10723 elif self.op.kind == constants.TAG_NODE:
10724 self.target = self.cfg.GetNodeInfo(self.op.name)
10725 elif self.op.kind == constants.TAG_INSTANCE:
10726 self.target = self.cfg.GetInstanceInfo(self.op.name)
10728 raise errors.OpPrereqError("Wrong tag type requested (%s)" %
10729 str(self.op.kind), errors.ECODE_INVAL)
10732 class LUTagsGet(TagsLU):
10733 """Returns the tags of a given object.
10738 def ExpandNames(self):
10739 TagsLU.ExpandNames(self)
10741 # Share locks as this is only a read operation
10742 self.share_locks = dict.fromkeys(locking.LEVELS, 1)
10744 def Exec(self, feedback_fn):
10745 """Returns the tag list.
10748 return list(self.target.GetTags())
10751 class LUTagsSearch(NoHooksLU):
10752 """Searches the tags for a given pattern.
10757 def ExpandNames(self):
10758 self.needed_locks = {}
10760 def CheckPrereq(self):
10761 """Check prerequisites.
10763 This checks the pattern passed for validity by compiling it.
10767 self.re = re.compile(self.op.pattern)
10768 except re.error, err:
10769 raise errors.OpPrereqError("Invalid search pattern '%s': %s" %
10770 (self.op.pattern, err), errors.ECODE_INVAL)
10772 def Exec(self, feedback_fn):
10773 """Returns the tag list.
10777 tgts = [("/cluster", cfg.GetClusterInfo())]
10778 ilist = cfg.GetAllInstancesInfo().values()
10779 tgts.extend([("/instances/%s" % i.name, i) for i in ilist])
10780 nlist = cfg.GetAllNodesInfo().values()
10781 tgts.extend([("/nodes/%s" % n.name, n) for n in nlist])
10783 for path, target in tgts:
10784 for tag in target.GetTags():
10785 if self.re.search(tag):
10786 results.append((path, tag))
10790 class LUTagsSet(TagsLU):
10791 """Sets a tag on a given object.
10796 def CheckPrereq(self):
10797 """Check prerequisites.
10799 This checks the type and length of the tag name and value.
10802 TagsLU.CheckPrereq(self)
10803 for tag in self.op.tags:
10804 objects.TaggableObject.ValidateTag(tag)
10806 def Exec(self, feedback_fn):
10811 for tag in self.op.tags:
10812 self.target.AddTag(tag)
10813 except errors.TagError, err:
10814 raise errors.OpExecError("Error while setting tag: %s" % str(err))
10815 self.cfg.Update(self.target, feedback_fn)
10818 class LUTagsDel(TagsLU):
10819 """Delete a list of tags from a given object.
10824 def CheckPrereq(self):
10825 """Check prerequisites.
10827 This checks that we have the given tag.
10830 TagsLU.CheckPrereq(self)
10831 for tag in self.op.tags:
10832 objects.TaggableObject.ValidateTag(tag)
10833 del_tags = frozenset(self.op.tags)
10834 cur_tags = self.target.GetTags()
10836 diff_tags = del_tags - cur_tags
10838 diff_names = ("'%s'" % i for i in sorted(diff_tags))
10839 raise errors.OpPrereqError("Tag(s) %s not found" %
10840 (utils.CommaJoin(diff_names), ),
10841 errors.ECODE_NOENT)
10843 def Exec(self, feedback_fn):
10844 """Remove the tag from the object.
10847 for tag in self.op.tags:
10848 self.target.RemoveTag(tag)
10849 self.cfg.Update(self.target, feedback_fn)
10852 class LUTestDelay(NoHooksLU):
10853 """Sleep for a specified amount of time.
10855 This LU sleeps on the master and/or nodes for a specified amount of
10861 def ExpandNames(self):
10862 """Expand names and set required locks.
10864 This expands the node list, if any.
10867 self.needed_locks = {}
10868 if self.op.on_nodes:
10869 # _GetWantedNodes can be used here, but is not always appropriate to use
10870 # this way in ExpandNames. Check LogicalUnit.ExpandNames docstring for
10871 # more information.
10872 self.op.on_nodes = _GetWantedNodes(self, self.op.on_nodes)
10873 self.needed_locks[locking.LEVEL_NODE] = self.op.on_nodes
10875 def _TestDelay(self):
10876 """Do the actual sleep.
10879 if self.op.on_master:
10880 if not utils.TestDelay(self.op.duration):
10881 raise errors.OpExecError("Error during master delay test")
10882 if self.op.on_nodes:
10883 result = self.rpc.call_test_delay(self.op.on_nodes, self.op.duration)
10884 for node, node_result in result.items():
10885 node_result.Raise("Failure during rpc call to node %s" % node)
10887 def Exec(self, feedback_fn):
10888 """Execute the test delay opcode, with the wanted repetitions.
10891 if self.op.repeat == 0:
10894 top_value = self.op.repeat - 1
10895 for i in range(self.op.repeat):
10896 self.LogInfo("Test delay iteration %d/%d" % (i, top_value))
10900 class LUTestJqueue(NoHooksLU):
10901 """Utility LU to test some aspects of the job queue.
10906 # Must be lower than default timeout for WaitForJobChange to see whether it
10907 # notices changed jobs
10908 _CLIENT_CONNECT_TIMEOUT = 20.0
10909 _CLIENT_CONFIRM_TIMEOUT = 60.0
10912 def _NotifyUsingSocket(cls, cb, errcls):
10913 """Opens a Unix socket and waits for another program to connect.
10916 @param cb: Callback to send socket name to client
10917 @type errcls: class
10918 @param errcls: Exception class to use for errors
10921 # Using a temporary directory as there's no easy way to create temporary
10922 # sockets without writing a custom loop around tempfile.mktemp and
10924 tmpdir = tempfile.mkdtemp()
10926 tmpsock = utils.PathJoin(tmpdir, "sock")
10928 logging.debug("Creating temporary socket at %s", tmpsock)
10929 sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
10934 # Send details to client
10937 # Wait for client to connect before continuing
10938 sock.settimeout(cls._CLIENT_CONNECT_TIMEOUT)
10940 (conn, _) = sock.accept()
10941 except socket.error, err:
10942 raise errcls("Client didn't connect in time (%s)" % err)
10946 # Remove as soon as client is connected
10947 shutil.rmtree(tmpdir)
10949 # Wait for client to close
10952 # pylint: disable-msg=E1101
10953 # Instance of '_socketobject' has no ... member
10954 conn.settimeout(cls._CLIENT_CONFIRM_TIMEOUT)
10956 except socket.error, err:
10957 raise errcls("Client failed to confirm notification (%s)" % err)
10961 def _SendNotification(self, test, arg, sockname):
10962 """Sends a notification to the client.
10965 @param test: Test name
10966 @param arg: Test argument (depends on test)
10967 @type sockname: string
10968 @param sockname: Socket path
10971 self.Log(constants.ELOG_JQUEUE_TEST, (sockname, test, arg))
10973 def _Notify(self, prereq, test, arg):
10974 """Notifies the client of a test.
10977 @param prereq: Whether this is a prereq-phase test
10979 @param test: Test name
10980 @param arg: Test argument (depends on test)
10984 errcls = errors.OpPrereqError
10986 errcls = errors.OpExecError
10988 return self._NotifyUsingSocket(compat.partial(self._SendNotification,
10992 def CheckArguments(self):
10993 self.checkargs_calls = getattr(self, "checkargs_calls", 0) + 1
10994 self.expandnames_calls = 0
10996 def ExpandNames(self):
10997 checkargs_calls = getattr(self, "checkargs_calls", 0)
10998 if checkargs_calls < 1:
10999 raise errors.ProgrammerError("CheckArguments was not called")
11001 self.expandnames_calls += 1
11003 if self.op.notify_waitlock:
11004 self._Notify(True, constants.JQT_EXPANDNAMES, None)
11006 self.LogInfo("Expanding names")
11008 # Get lock on master node (just to get a lock, not for a particular reason)
11009 self.needed_locks = {
11010 locking.LEVEL_NODE: self.cfg.GetMasterNode(),
11013 def Exec(self, feedback_fn):
11014 if self.expandnames_calls < 1:
11015 raise errors.ProgrammerError("ExpandNames was not called")
11017 if self.op.notify_exec:
11018 self._Notify(False, constants.JQT_EXEC, None)
11020 self.LogInfo("Executing")
11022 if self.op.log_messages:
11023 self._Notify(False, constants.JQT_STARTMSG, len(self.op.log_messages))
11024 for idx, msg in enumerate(self.op.log_messages):
11025 self.LogInfo("Sending log message %s", idx + 1)
11026 feedback_fn(constants.JQT_MSGPREFIX + msg)
11027 # Report how many test messages have been sent
11028 self._Notify(False, constants.JQT_LOGMSG, idx + 1)
11031 raise errors.OpExecError("Opcode failure was requested")
11036 class IAllocator(object):
11037 """IAllocator framework.
11039 An IAllocator instance has three sets of attributes:
11040 - cfg that is needed to query the cluster
11041 - input data (all members of the _KEYS class attribute are required)
11042 - four buffer attributes (in|out_data|text), that represent the
11043 input (to the external script) in text and data structure format,
11044 and the output from it, again in two formats
11045 - the result variables from the script (success, info, nodes) for
11049 # pylint: disable-msg=R0902
11050 # lots of instance attributes
11052 "name", "mem_size", "disks", "disk_template",
11053 "os", "tags", "nics", "vcpus", "hypervisor",
11056 "name", "relocate_from",
11062 def __init__(self, cfg, rpc, mode, **kwargs):
11065 # init buffer variables
11066 self.in_text = self.out_text = self.in_data = self.out_data = None
11067 # init all input fields so that pylint is happy
11069 self.mem_size = self.disks = self.disk_template = None
11070 self.os = self.tags = self.nics = self.vcpus = None
11071 self.hypervisor = None
11072 self.relocate_from = None
11074 self.evac_nodes = None
11076 self.required_nodes = None
11077 # init result fields
11078 self.success = self.info = self.result = None
11079 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
11080 keyset = self._ALLO_KEYS
11081 fn = self._AddNewInstance
11082 elif self.mode == constants.IALLOCATOR_MODE_RELOC:
11083 keyset = self._RELO_KEYS
11084 fn = self._AddRelocateInstance
11085 elif self.mode == constants.IALLOCATOR_MODE_MEVAC:
11086 keyset = self._EVAC_KEYS
11087 fn = self._AddEvacuateNodes
11089 raise errors.ProgrammerError("Unknown mode '%s' passed to the"
11090 " IAllocator" % self.mode)
11092 if key not in keyset:
11093 raise errors.ProgrammerError("Invalid input parameter '%s' to"
11094 " IAllocator" % key)
11095 setattr(self, key, kwargs[key])
11098 if key not in kwargs:
11099 raise errors.ProgrammerError("Missing input parameter '%s' to"
11100 " IAllocator" % key)
11101 self._BuildInputData(fn)
11103 def _ComputeClusterData(self):
11104 """Compute the generic allocator input data.
11106 This is the data that is independent of the actual operation.
11110 cluster_info = cfg.GetClusterInfo()
11113 "version": constants.IALLOCATOR_VERSION,
11114 "cluster_name": cfg.GetClusterName(),
11115 "cluster_tags": list(cluster_info.GetTags()),
11116 "enabled_hypervisors": list(cluster_info.enabled_hypervisors),
11117 # we don't have job IDs
11119 ninfo = cfg.GetAllNodesInfo()
11120 iinfo = cfg.GetAllInstancesInfo().values()
11121 i_list = [(inst, cluster_info.FillBE(inst)) for inst in iinfo]
11124 node_list = [n.name for n in ninfo.values() if n.vm_capable]
11126 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
11127 hypervisor_name = self.hypervisor
11128 elif self.mode == constants.IALLOCATOR_MODE_RELOC:
11129 hypervisor_name = cfg.GetInstanceInfo(self.name).hypervisor
11130 elif self.mode == constants.IALLOCATOR_MODE_MEVAC:
11131 hypervisor_name = cluster_info.enabled_hypervisors[0]
11133 node_data = self.rpc.call_node_info(node_list, cfg.GetVGName(),
11136 self.rpc.call_all_instances_info(node_list,
11137 cluster_info.enabled_hypervisors)
11139 data["nodegroups"] = self._ComputeNodeGroupData(cfg)
11141 config_ndata = self._ComputeBasicNodeData(ninfo)
11142 data["nodes"] = self._ComputeDynamicNodeData(ninfo, node_data, node_iinfo,
11143 i_list, config_ndata)
11144 assert len(data["nodes"]) == len(ninfo), \
11145 "Incomplete node data computed"
11147 data["instances"] = self._ComputeInstanceData(cluster_info, i_list)
11149 self.in_data = data
11152 def _ComputeNodeGroupData(cfg):
11153 """Compute node groups data.
11157 for guuid, gdata in cfg.GetAllNodeGroupsInfo().items():
11159 "name": gdata.name,
11160 "alloc_policy": gdata.alloc_policy,
11165 def _ComputeBasicNodeData(node_cfg):
11166 """Compute global node data.
11169 @returns: a dict of name: (node dict, node config)
11173 for ninfo in node_cfg.values():
11174 # fill in static (config-based) values
11176 "tags": list(ninfo.GetTags()),
11177 "primary_ip": ninfo.primary_ip,
11178 "secondary_ip": ninfo.secondary_ip,
11179 "offline": ninfo.offline,
11180 "drained": ninfo.drained,
11181 "master_candidate": ninfo.master_candidate,
11182 "group": ninfo.group,
11183 "master_capable": ninfo.master_capable,
11184 "vm_capable": ninfo.vm_capable,
11187 node_results[ninfo.name] = pnr
11189 return node_results
11192 def _ComputeDynamicNodeData(node_cfg, node_data, node_iinfo, i_list,
11194 """Compute global node data.
11196 @param node_results: the basic node structures as filled from the config
11199 # make a copy of the current dict
11200 node_results = dict(node_results)
11201 for nname, nresult in node_data.items():
11202 assert nname in node_results, "Missing basic data for node %s" % nname
11203 ninfo = node_cfg[nname]
11205 if not (ninfo.offline or ninfo.drained):
11206 nresult.Raise("Can't get data for node %s" % nname)
11207 node_iinfo[nname].Raise("Can't get node instance info from node %s" %
11209 remote_info = nresult.payload
11211 for attr in ['memory_total', 'memory_free', 'memory_dom0',
11212 'vg_size', 'vg_free', 'cpu_total']:
11213 if attr not in remote_info:
11214 raise errors.OpExecError("Node '%s' didn't return attribute"
11215 " '%s'" % (nname, attr))
11216 if not isinstance(remote_info[attr], int):
11217 raise errors.OpExecError("Node '%s' returned invalid value"
11219 (nname, attr, remote_info[attr]))
11220 # compute memory used by primary instances
11221 i_p_mem = i_p_up_mem = 0
11222 for iinfo, beinfo in i_list:
11223 if iinfo.primary_node == nname:
11224 i_p_mem += beinfo[constants.BE_MEMORY]
11225 if iinfo.name not in node_iinfo[nname].payload:
11228 i_used_mem = int(node_iinfo[nname].payload[iinfo.name]['memory'])
11229 i_mem_diff = beinfo[constants.BE_MEMORY] - i_used_mem
11230 remote_info['memory_free'] -= max(0, i_mem_diff)
11233 i_p_up_mem += beinfo[constants.BE_MEMORY]
11235 # compute memory used by instances
11237 "total_memory": remote_info['memory_total'],
11238 "reserved_memory": remote_info['memory_dom0'],
11239 "free_memory": remote_info['memory_free'],
11240 "total_disk": remote_info['vg_size'],
11241 "free_disk": remote_info['vg_free'],
11242 "total_cpus": remote_info['cpu_total'],
11243 "i_pri_memory": i_p_mem,
11244 "i_pri_up_memory": i_p_up_mem,
11246 pnr_dyn.update(node_results[nname])
11247 node_results[nname] = pnr_dyn
11249 return node_results
11252 def _ComputeInstanceData(cluster_info, i_list):
11253 """Compute global instance data.
11257 for iinfo, beinfo in i_list:
11259 for nic in iinfo.nics:
11260 filled_params = cluster_info.SimpleFillNIC(nic.nicparams)
11261 nic_dict = {"mac": nic.mac,
11263 "mode": filled_params[constants.NIC_MODE],
11264 "link": filled_params[constants.NIC_LINK],
11266 if filled_params[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
11267 nic_dict["bridge"] = filled_params[constants.NIC_LINK]
11268 nic_data.append(nic_dict)
11270 "tags": list(iinfo.GetTags()),
11271 "admin_up": iinfo.admin_up,
11272 "vcpus": beinfo[constants.BE_VCPUS],
11273 "memory": beinfo[constants.BE_MEMORY],
11275 "nodes": [iinfo.primary_node] + list(iinfo.secondary_nodes),
11277 "disks": [{"size": dsk.size, "mode": dsk.mode} for dsk in iinfo.disks],
11278 "disk_template": iinfo.disk_template,
11279 "hypervisor": iinfo.hypervisor,
11281 pir["disk_space_total"] = _ComputeDiskSize(iinfo.disk_template,
11283 instance_data[iinfo.name] = pir
11285 return instance_data
11287 def _AddNewInstance(self):
11288 """Add new instance data to allocator structure.
11290 This in combination with _AllocatorGetClusterData will create the
11291 correct structure needed as input for the allocator.
11293 The checks for the completeness of the opcode must have already been
11297 disk_space = _ComputeDiskSize(self.disk_template, self.disks)
11299 if self.disk_template in constants.DTS_NET_MIRROR:
11300 self.required_nodes = 2
11302 self.required_nodes = 1
11305 "disk_template": self.disk_template,
11308 "vcpus": self.vcpus,
11309 "memory": self.mem_size,
11310 "disks": self.disks,
11311 "disk_space_total": disk_space,
11313 "required_nodes": self.required_nodes,
11317 def _AddRelocateInstance(self):
11318 """Add relocate instance data to allocator structure.
11320 This in combination with _IAllocatorGetClusterData will create the
11321 correct structure needed as input for the allocator.
11323 The checks for the completeness of the opcode must have already been
11327 instance = self.cfg.GetInstanceInfo(self.name)
11328 if instance is None:
11329 raise errors.ProgrammerError("Unknown instance '%s' passed to"
11330 " IAllocator" % self.name)
11332 if instance.disk_template not in constants.DTS_NET_MIRROR:
11333 raise errors.OpPrereqError("Can't relocate non-mirrored instances",
11334 errors.ECODE_INVAL)
11336 if len(instance.secondary_nodes) != 1:
11337 raise errors.OpPrereqError("Instance has not exactly one secondary node",
11338 errors.ECODE_STATE)
11340 self.required_nodes = 1
11341 disk_sizes = [{'size': disk.size} for disk in instance.disks]
11342 disk_space = _ComputeDiskSize(instance.disk_template, disk_sizes)
11346 "disk_space_total": disk_space,
11347 "required_nodes": self.required_nodes,
11348 "relocate_from": self.relocate_from,
11352 def _AddEvacuateNodes(self):
11353 """Add evacuate nodes data to allocator structure.
11357 "evac_nodes": self.evac_nodes
11361 def _BuildInputData(self, fn):
11362 """Build input data structures.
11365 self._ComputeClusterData()
11368 request["type"] = self.mode
11369 self.in_data["request"] = request
11371 self.in_text = serializer.Dump(self.in_data)
11373 def Run(self, name, validate=True, call_fn=None):
11374 """Run an instance allocator and return the results.
11377 if call_fn is None:
11378 call_fn = self.rpc.call_iallocator_runner
11380 result = call_fn(self.cfg.GetMasterNode(), name, self.in_text)
11381 result.Raise("Failure while running the iallocator script")
11383 self.out_text = result.payload
11385 self._ValidateResult()
11387 def _ValidateResult(self):
11388 """Process the allocator results.
11390 This will process and if successful save the result in
11391 self.out_data and the other parameters.
11395 rdict = serializer.Load(self.out_text)
11396 except Exception, err:
11397 raise errors.OpExecError("Can't parse iallocator results: %s" % str(err))
11399 if not isinstance(rdict, dict):
11400 raise errors.OpExecError("Can't parse iallocator results: not a dict")
11402 # TODO: remove backwards compatiblity in later versions
11403 if "nodes" in rdict and "result" not in rdict:
11404 rdict["result"] = rdict["nodes"]
11407 for key in "success", "info", "result":
11408 if key not in rdict:
11409 raise errors.OpExecError("Can't parse iallocator results:"
11410 " missing key '%s'" % key)
11411 setattr(self, key, rdict[key])
11413 if not isinstance(rdict["result"], list):
11414 raise errors.OpExecError("Can't parse iallocator results: 'result' key"
11416 self.out_data = rdict
11419 class LUTestAllocator(NoHooksLU):
11420 """Run allocator tests.
11422 This LU runs the allocator tests
11425 def CheckPrereq(self):
11426 """Check prerequisites.
11428 This checks the opcode parameters depending on the director and mode test.
11431 if self.op.mode == constants.IALLOCATOR_MODE_ALLOC:
11432 for attr in ["mem_size", "disks", "disk_template",
11433 "os", "tags", "nics", "vcpus"]:
11434 if not hasattr(self.op, attr):
11435 raise errors.OpPrereqError("Missing attribute '%s' on opcode input" %
11436 attr, errors.ECODE_INVAL)
11437 iname = self.cfg.ExpandInstanceName(self.op.name)
11438 if iname is not None:
11439 raise errors.OpPrereqError("Instance '%s' already in the cluster" %
11440 iname, errors.ECODE_EXISTS)
11441 if not isinstance(self.op.nics, list):
11442 raise errors.OpPrereqError("Invalid parameter 'nics'",
11443 errors.ECODE_INVAL)
11444 if not isinstance(self.op.disks, list):
11445 raise errors.OpPrereqError("Invalid parameter 'disks'",
11446 errors.ECODE_INVAL)
11447 for row in self.op.disks:
11448 if (not isinstance(row, dict) or
11449 "size" not in row or
11450 not isinstance(row["size"], int) or
11451 "mode" not in row or
11452 row["mode"] not in ['r', 'w']):
11453 raise errors.OpPrereqError("Invalid contents of the 'disks'"
11454 " parameter", errors.ECODE_INVAL)
11455 if self.op.hypervisor is None:
11456 self.op.hypervisor = self.cfg.GetHypervisorType()
11457 elif self.op.mode == constants.IALLOCATOR_MODE_RELOC:
11458 fname = _ExpandInstanceName(self.cfg, self.op.name)
11459 self.op.name = fname
11460 self.relocate_from = self.cfg.GetInstanceInfo(fname).secondary_nodes
11461 elif self.op.mode == constants.IALLOCATOR_MODE_MEVAC:
11462 if not hasattr(self.op, "evac_nodes"):
11463 raise errors.OpPrereqError("Missing attribute 'evac_nodes' on"
11464 " opcode input", errors.ECODE_INVAL)
11466 raise errors.OpPrereqError("Invalid test allocator mode '%s'" %
11467 self.op.mode, errors.ECODE_INVAL)
11469 if self.op.direction == constants.IALLOCATOR_DIR_OUT:
11470 if self.op.allocator is None:
11471 raise errors.OpPrereqError("Missing allocator name",
11472 errors.ECODE_INVAL)
11473 elif self.op.direction != constants.IALLOCATOR_DIR_IN:
11474 raise errors.OpPrereqError("Wrong allocator test '%s'" %
11475 self.op.direction, errors.ECODE_INVAL)
11477 def Exec(self, feedback_fn):
11478 """Run the allocator test.
11481 if self.op.mode == constants.IALLOCATOR_MODE_ALLOC:
11482 ial = IAllocator(self.cfg, self.rpc,
11485 mem_size=self.op.mem_size,
11486 disks=self.op.disks,
11487 disk_template=self.op.disk_template,
11491 vcpus=self.op.vcpus,
11492 hypervisor=self.op.hypervisor,
11494 elif self.op.mode == constants.IALLOCATOR_MODE_RELOC:
11495 ial = IAllocator(self.cfg, self.rpc,
11498 relocate_from=list(self.relocate_from),
11500 elif self.op.mode == constants.IALLOCATOR_MODE_MEVAC:
11501 ial = IAllocator(self.cfg, self.rpc,
11503 evac_nodes=self.op.evac_nodes)
11505 raise errors.ProgrammerError("Uncatched mode %s in"
11506 " LUTestAllocator.Exec", self.op.mode)
11508 if self.op.direction == constants.IALLOCATOR_DIR_IN:
11509 result = ial.in_text
11511 ial.Run(self.op.allocator, validate=False)
11512 result = ial.out_text
11516 #: Query type implementations
11518 constants.QR_INSTANCE: _InstanceQuery,
11519 constants.QR_NODE: _NodeQuery,
11520 constants.QR_GROUP: _GroupQuery,
11524 def _GetQueryImplementation(name):
11525 """Returns the implemtnation for a query type.
11527 @param name: Query type, must be one of L{constants.QR_OP_QUERY}
11531 return _QUERY_IMPL[name]
11533 raise errors.OpPrereqError("Unknown query resource '%s'" % name,
11534 errors.ECODE_INVAL)