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 time.
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 _VerifyNodeNetwork(self, ninfo, nresult):
1484 """Check the node time.
1486 @type ninfo: L{objects.Node}
1487 @param ninfo: the node to check
1488 @param nresult: the remote results for the node
1492 _ErrorIf = self._ErrorIf # pylint: disable-msg=C0103
1494 test = constants.NV_NODELIST not in nresult
1495 _ErrorIf(test, self.ENODESSH, node,
1496 "node hasn't returned node ssh connectivity data")
1498 if nresult[constants.NV_NODELIST]:
1499 for a_node, a_msg in nresult[constants.NV_NODELIST].items():
1500 _ErrorIf(True, self.ENODESSH, node,
1501 "ssh communication with node '%s': %s", a_node, a_msg)
1503 test = constants.NV_NODENETTEST not in nresult
1504 _ErrorIf(test, self.ENODENET, node,
1505 "node hasn't returned node tcp connectivity data")
1507 if nresult[constants.NV_NODENETTEST]:
1508 nlist = utils.NiceSort(nresult[constants.NV_NODENETTEST].keys())
1510 _ErrorIf(True, self.ENODENET, node,
1511 "tcp communication with node '%s': %s",
1512 anode, nresult[constants.NV_NODENETTEST][anode])
1514 test = constants.NV_MASTERIP not in nresult
1515 _ErrorIf(test, self.ENODENET, node,
1516 "node hasn't returned node master IP reachability data")
1518 if not nresult[constants.NV_MASTERIP]:
1519 if node == self.master_node:
1520 msg = "the master node cannot reach the master IP (not configured?)"
1522 msg = "cannot reach the master IP"
1523 _ErrorIf(True, self.ENODENET, node, msg)
1525 def _VerifyInstance(self, instance, instanceconfig, node_image,
1527 """Verify an instance.
1529 This function checks to see if the required block devices are
1530 available on the instance's node.
1533 _ErrorIf = self._ErrorIf # pylint: disable-msg=C0103
1534 node_current = instanceconfig.primary_node
1536 node_vol_should = {}
1537 instanceconfig.MapLVsByNode(node_vol_should)
1539 for node in node_vol_should:
1540 n_img = node_image[node]
1541 if n_img.offline or n_img.rpc_fail or n_img.lvm_fail:
1542 # ignore missing volumes on offline or broken nodes
1544 for volume in node_vol_should[node]:
1545 test = volume not in n_img.volumes
1546 _ErrorIf(test, self.EINSTANCEMISSINGDISK, instance,
1547 "volume %s missing on node %s", volume, node)
1549 if instanceconfig.admin_up:
1550 pri_img = node_image[node_current]
1551 test = instance not in pri_img.instances and not pri_img.offline
1552 _ErrorIf(test, self.EINSTANCEDOWN, instance,
1553 "instance not running on its primary node %s",
1556 for node, n_img in node_image.items():
1557 if node != node_current:
1558 test = instance in n_img.instances
1559 _ErrorIf(test, self.EINSTANCEWRONGNODE, instance,
1560 "instance should not run on node %s", node)
1562 diskdata = [(nname, success, status, idx)
1563 for (nname, disks) in diskstatus.items()
1564 for idx, (success, status) in enumerate(disks)]
1566 for nname, success, bdev_status, idx in diskdata:
1567 # the 'ghost node' construction in Exec() ensures that we have a
1569 snode = node_image[nname]
1570 bad_snode = snode.ghost or snode.offline
1571 _ErrorIf(instanceconfig.admin_up and not success and not bad_snode,
1572 self.EINSTANCEFAULTYDISK, instance,
1573 "couldn't retrieve status for disk/%s on %s: %s",
1574 idx, nname, bdev_status)
1575 _ErrorIf((instanceconfig.admin_up and success and
1576 bdev_status.ldisk_status == constants.LDS_FAULTY),
1577 self.EINSTANCEFAULTYDISK, instance,
1578 "disk/%s on %s is faulty", idx, nname)
1580 def _VerifyOrphanVolumes(self, node_vol_should, node_image, reserved):
1581 """Verify if there are any unknown volumes in the cluster.
1583 The .os, .swap and backup volumes are ignored. All other volumes are
1584 reported as unknown.
1586 @type reserved: L{ganeti.utils.FieldSet}
1587 @param reserved: a FieldSet of reserved volume names
1590 for node, n_img in node_image.items():
1591 if n_img.offline or n_img.rpc_fail or n_img.lvm_fail:
1592 # skip non-healthy nodes
1594 for volume in n_img.volumes:
1595 test = ((node not in node_vol_should or
1596 volume not in node_vol_should[node]) and
1597 not reserved.Matches(volume))
1598 self._ErrorIf(test, self.ENODEORPHANLV, node,
1599 "volume %s is unknown", volume)
1601 def _VerifyOrphanInstances(self, instancelist, node_image):
1602 """Verify the list of running instances.
1604 This checks what instances are running but unknown to the cluster.
1607 for node, n_img in node_image.items():
1608 for o_inst in n_img.instances:
1609 test = o_inst not in instancelist
1610 self._ErrorIf(test, self.ENODEORPHANINSTANCE, node,
1611 "instance %s on node %s should not exist", o_inst, node)
1613 def _VerifyNPlusOneMemory(self, node_image, instance_cfg):
1614 """Verify N+1 Memory Resilience.
1616 Check that if one single node dies we can still start all the
1617 instances it was primary for.
1620 for node, n_img in node_image.items():
1621 # This code checks that every node which is now listed as
1622 # secondary has enough memory to host all instances it is
1623 # supposed to should a single other node in the cluster fail.
1624 # FIXME: not ready for failover to an arbitrary node
1625 # FIXME: does not support file-backed instances
1626 # WARNING: we currently take into account down instances as well
1627 # as up ones, considering that even if they're down someone
1628 # might want to start them even in the event of a node failure.
1630 # we're skipping offline nodes from the N+1 warning, since
1631 # most likely we don't have good memory infromation from them;
1632 # we already list instances living on such nodes, and that's
1635 for prinode, instances in n_img.sbp.items():
1637 for instance in instances:
1638 bep = self.cfg.GetClusterInfo().FillBE(instance_cfg[instance])
1639 if bep[constants.BE_AUTO_BALANCE]:
1640 needed_mem += bep[constants.BE_MEMORY]
1641 test = n_img.mfree < needed_mem
1642 self._ErrorIf(test, self.ENODEN1, node,
1643 "not enough memory to accomodate instance failovers"
1644 " should node %s fail (%dMiB needed, %dMiB available)",
1645 prinode, needed_mem, n_img.mfree)
1647 def _VerifyNodeFiles(self, ninfo, nresult, file_list, local_cksum,
1649 """Verifies and computes the node required file checksums.
1651 @type ninfo: L{objects.Node}
1652 @param ninfo: the node to check
1653 @param nresult: the remote results for the node
1654 @param file_list: required list of files
1655 @param local_cksum: dictionary of local files and their checksums
1656 @param master_files: list of files that only masters should have
1660 _ErrorIf = self._ErrorIf # pylint: disable-msg=C0103
1662 remote_cksum = nresult.get(constants.NV_FILELIST, None)
1663 test = not isinstance(remote_cksum, dict)
1664 _ErrorIf(test, self.ENODEFILECHECK, node,
1665 "node hasn't returned file checksum data")
1669 for file_name in file_list:
1670 node_is_mc = ninfo.master_candidate
1671 must_have = (file_name not in master_files) or node_is_mc
1673 test1 = file_name not in remote_cksum
1675 test2 = not test1 and remote_cksum[file_name] != local_cksum[file_name]
1677 test3 = not test1 and remote_cksum[file_name] == local_cksum[file_name]
1678 _ErrorIf(test1 and must_have, self.ENODEFILECHECK, node,
1679 "file '%s' missing", file_name)
1680 _ErrorIf(test2 and must_have, self.ENODEFILECHECK, node,
1681 "file '%s' has wrong checksum", file_name)
1682 # not candidate and this is not a must-have file
1683 _ErrorIf(test2 and not must_have, self.ENODEFILECHECK, node,
1684 "file '%s' should not exist on non master"
1685 " candidates (and the file is outdated)", file_name)
1686 # all good, except non-master/non-must have combination
1687 _ErrorIf(test3 and not must_have, self.ENODEFILECHECK, node,
1688 "file '%s' should not exist"
1689 " on non master candidates", file_name)
1691 def _VerifyNodeDrbd(self, ninfo, nresult, instanceinfo, drbd_helper,
1693 """Verifies and the node DRBD status.
1695 @type ninfo: L{objects.Node}
1696 @param ninfo: the node to check
1697 @param nresult: the remote results for the node
1698 @param instanceinfo: the dict of instances
1699 @param drbd_helper: the configured DRBD usermode helper
1700 @param drbd_map: the DRBD map as returned by
1701 L{ganeti.config.ConfigWriter.ComputeDRBDMap}
1705 _ErrorIf = self._ErrorIf # pylint: disable-msg=C0103
1708 helper_result = nresult.get(constants.NV_DRBDHELPER, None)
1709 test = (helper_result == None)
1710 _ErrorIf(test, self.ENODEDRBDHELPER, node,
1711 "no drbd usermode helper returned")
1713 status, payload = helper_result
1715 _ErrorIf(test, self.ENODEDRBDHELPER, node,
1716 "drbd usermode helper check unsuccessful: %s", payload)
1717 test = status and (payload != drbd_helper)
1718 _ErrorIf(test, self.ENODEDRBDHELPER, node,
1719 "wrong drbd usermode helper: %s", payload)
1721 # compute the DRBD minors
1723 for minor, instance in drbd_map[node].items():
1724 test = instance not in instanceinfo
1725 _ErrorIf(test, self.ECLUSTERCFG, None,
1726 "ghost instance '%s' in temporary DRBD map", instance)
1727 # ghost instance should not be running, but otherwise we
1728 # don't give double warnings (both ghost instance and
1729 # unallocated minor in use)
1731 node_drbd[minor] = (instance, False)
1733 instance = instanceinfo[instance]
1734 node_drbd[minor] = (instance.name, instance.admin_up)
1736 # and now check them
1737 used_minors = nresult.get(constants.NV_DRBDLIST, [])
1738 test = not isinstance(used_minors, (tuple, list))
1739 _ErrorIf(test, self.ENODEDRBD, node,
1740 "cannot parse drbd status file: %s", str(used_minors))
1742 # we cannot check drbd status
1745 for minor, (iname, must_exist) in node_drbd.items():
1746 test = minor not in used_minors and must_exist
1747 _ErrorIf(test, self.ENODEDRBD, node,
1748 "drbd minor %d of instance %s is not active", minor, iname)
1749 for minor in used_minors:
1750 test = minor not in node_drbd
1751 _ErrorIf(test, self.ENODEDRBD, node,
1752 "unallocated drbd minor %d is in use", minor)
1754 def _UpdateNodeOS(self, ninfo, nresult, nimg):
1755 """Builds the node OS structures.
1757 @type ninfo: L{objects.Node}
1758 @param ninfo: the node to check
1759 @param nresult: the remote results for the node
1760 @param nimg: the node image object
1764 _ErrorIf = self._ErrorIf # pylint: disable-msg=C0103
1766 remote_os = nresult.get(constants.NV_OSLIST, None)
1767 test = (not isinstance(remote_os, list) or
1768 not compat.all(isinstance(v, list) and len(v) == 7
1769 for v in remote_os))
1771 _ErrorIf(test, self.ENODEOS, node,
1772 "node hasn't returned valid OS data")
1781 for (name, os_path, status, diagnose,
1782 variants, parameters, api_ver) in nresult[constants.NV_OSLIST]:
1784 if name not in os_dict:
1787 # parameters is a list of lists instead of list of tuples due to
1788 # JSON lacking a real tuple type, fix it:
1789 parameters = [tuple(v) for v in parameters]
1790 os_dict[name].append((os_path, status, diagnose,
1791 set(variants), set(parameters), set(api_ver)))
1793 nimg.oslist = os_dict
1795 def _VerifyNodeOS(self, ninfo, nimg, base):
1796 """Verifies the node OS list.
1798 @type ninfo: L{objects.Node}
1799 @param ninfo: the node to check
1800 @param nimg: the node image object
1801 @param base: the 'template' node we match against (e.g. from the master)
1805 _ErrorIf = self._ErrorIf # pylint: disable-msg=C0103
1807 assert not nimg.os_fail, "Entered _VerifyNodeOS with failed OS rpc?"
1809 for os_name, os_data in nimg.oslist.items():
1810 assert os_data, "Empty OS status for OS %s?!" % os_name
1811 f_path, f_status, f_diag, f_var, f_param, f_api = os_data[0]
1812 _ErrorIf(not f_status, self.ENODEOS, node,
1813 "Invalid OS %s (located at %s): %s", os_name, f_path, f_diag)
1814 _ErrorIf(len(os_data) > 1, self.ENODEOS, node,
1815 "OS '%s' has multiple entries (first one shadows the rest): %s",
1816 os_name, utils.CommaJoin([v[0] for v in os_data]))
1817 # this will catched in backend too
1818 _ErrorIf(compat.any(v >= constants.OS_API_V15 for v in f_api)
1819 and not f_var, self.ENODEOS, node,
1820 "OS %s with API at least %d does not declare any variant",
1821 os_name, constants.OS_API_V15)
1822 # comparisons with the 'base' image
1823 test = os_name not in base.oslist
1824 _ErrorIf(test, self.ENODEOS, node,
1825 "Extra OS %s not present on reference node (%s)",
1829 assert base.oslist[os_name], "Base node has empty OS status?"
1830 _, b_status, _, b_var, b_param, b_api = base.oslist[os_name][0]
1832 # base OS is invalid, skipping
1834 for kind, a, b in [("API version", f_api, b_api),
1835 ("variants list", f_var, b_var),
1836 ("parameters", f_param, b_param)]:
1837 _ErrorIf(a != b, self.ENODEOS, node,
1838 "OS %s %s differs from reference node %s: %s vs. %s",
1839 kind, os_name, base.name,
1840 utils.CommaJoin(a), utils.CommaJoin(b))
1842 # check any missing OSes
1843 missing = set(base.oslist.keys()).difference(nimg.oslist.keys())
1844 _ErrorIf(missing, self.ENODEOS, node,
1845 "OSes present on reference node %s but missing on this node: %s",
1846 base.name, utils.CommaJoin(missing))
1848 def _VerifyOob(self, ninfo, nresult):
1849 """Verifies out of band functionality of a node.
1851 @type ninfo: L{objects.Node}
1852 @param ninfo: the node to check
1853 @param nresult: the remote results for the node
1857 # We just have to verify the paths on master and/or master candidates
1858 # as the oob helper is invoked on the master
1859 if ((ninfo.master_candidate or ninfo.master_capable) and
1860 constants.NV_OOB_PATHS in nresult):
1861 for path_result in nresult[constants.NV_OOB_PATHS]:
1862 self._ErrorIf(path_result, self.ENODEOOBPATH, node, path_result)
1864 def _UpdateNodeVolumes(self, ninfo, nresult, nimg, vg_name):
1865 """Verifies and updates the node volume data.
1867 This function will update a L{NodeImage}'s internal structures
1868 with data from the remote call.
1870 @type ninfo: L{objects.Node}
1871 @param ninfo: the node to check
1872 @param nresult: the remote results for the node
1873 @param nimg: the node image object
1874 @param vg_name: the configured VG name
1878 _ErrorIf = self._ErrorIf # pylint: disable-msg=C0103
1880 nimg.lvm_fail = True
1881 lvdata = nresult.get(constants.NV_LVLIST, "Missing LV data")
1884 elif isinstance(lvdata, basestring):
1885 _ErrorIf(True, self.ENODELVM, node, "LVM problem on node: %s",
1886 utils.SafeEncode(lvdata))
1887 elif not isinstance(lvdata, dict):
1888 _ErrorIf(True, self.ENODELVM, node, "rpc call to node failed (lvlist)")
1890 nimg.volumes = lvdata
1891 nimg.lvm_fail = False
1893 def _UpdateNodeInstances(self, ninfo, nresult, nimg):
1894 """Verifies and updates the node instance list.
1896 If the listing was successful, then updates this node's instance
1897 list. Otherwise, it marks the RPC call as failed for the instance
1900 @type ninfo: L{objects.Node}
1901 @param ninfo: the node to check
1902 @param nresult: the remote results for the node
1903 @param nimg: the node image object
1906 idata = nresult.get(constants.NV_INSTANCELIST, None)
1907 test = not isinstance(idata, list)
1908 self._ErrorIf(test, self.ENODEHV, ninfo.name, "rpc call to node failed"
1909 " (instancelist): %s", utils.SafeEncode(str(idata)))
1911 nimg.hyp_fail = True
1913 nimg.instances = idata
1915 def _UpdateNodeInfo(self, ninfo, nresult, nimg, vg_name):
1916 """Verifies and computes a node information map
1918 @type ninfo: L{objects.Node}
1919 @param ninfo: the node to check
1920 @param nresult: the remote results for the node
1921 @param nimg: the node image object
1922 @param vg_name: the configured VG name
1926 _ErrorIf = self._ErrorIf # pylint: disable-msg=C0103
1928 # try to read free memory (from the hypervisor)
1929 hv_info = nresult.get(constants.NV_HVINFO, None)
1930 test = not isinstance(hv_info, dict) or "memory_free" not in hv_info
1931 _ErrorIf(test, self.ENODEHV, node, "rpc call to node failed (hvinfo)")
1934 nimg.mfree = int(hv_info["memory_free"])
1935 except (ValueError, TypeError):
1936 _ErrorIf(True, self.ENODERPC, node,
1937 "node returned invalid nodeinfo, check hypervisor")
1939 # FIXME: devise a free space model for file based instances as well
1940 if vg_name is not None:
1941 test = (constants.NV_VGLIST not in nresult or
1942 vg_name not in nresult[constants.NV_VGLIST])
1943 _ErrorIf(test, self.ENODELVM, node,
1944 "node didn't return data for the volume group '%s'"
1945 " - it is either missing or broken", vg_name)
1948 nimg.dfree = int(nresult[constants.NV_VGLIST][vg_name])
1949 except (ValueError, TypeError):
1950 _ErrorIf(True, self.ENODERPC, node,
1951 "node returned invalid LVM info, check LVM status")
1953 def _CollectDiskInfo(self, nodelist, node_image, instanceinfo):
1954 """Gets per-disk status information for all instances.
1956 @type nodelist: list of strings
1957 @param nodelist: Node names
1958 @type node_image: dict of (name, L{objects.Node})
1959 @param node_image: Node objects
1960 @type instanceinfo: dict of (name, L{objects.Instance})
1961 @param instanceinfo: Instance objects
1962 @rtype: {instance: {node: [(succes, payload)]}}
1963 @return: a dictionary of per-instance dictionaries with nodes as
1964 keys and disk information as values; the disk information is a
1965 list of tuples (success, payload)
1968 _ErrorIf = self._ErrorIf # pylint: disable-msg=C0103
1971 node_disks_devonly = {}
1972 diskless_instances = set()
1973 diskless = constants.DT_DISKLESS
1975 for nname in nodelist:
1976 node_instances = list(itertools.chain(node_image[nname].pinst,
1977 node_image[nname].sinst))
1978 diskless_instances.update(inst for inst in node_instances
1979 if instanceinfo[inst].disk_template == diskless)
1980 disks = [(inst, disk)
1981 for inst in node_instances
1982 for disk in instanceinfo[inst].disks]
1985 # No need to collect data
1988 node_disks[nname] = disks
1990 # Creating copies as SetDiskID below will modify the objects and that can
1991 # lead to incorrect data returned from nodes
1992 devonly = [dev.Copy() for (_, dev) in disks]
1995 self.cfg.SetDiskID(dev, nname)
1997 node_disks_devonly[nname] = devonly
1999 assert len(node_disks) == len(node_disks_devonly)
2001 # Collect data from all nodes with disks
2002 result = self.rpc.call_blockdev_getmirrorstatus_multi(node_disks.keys(),
2005 assert len(result) == len(node_disks)
2009 for (nname, nres) in result.items():
2010 disks = node_disks[nname]
2013 # No data from this node
2014 data = len(disks) * [(False, "node offline")]
2017 _ErrorIf(msg, self.ENODERPC, nname,
2018 "while getting disk information: %s", msg)
2020 # No data from this node
2021 data = len(disks) * [(False, msg)]
2024 for idx, i in enumerate(nres.payload):
2025 if isinstance(i, (tuple, list)) and len(i) == 2:
2028 logging.warning("Invalid result from node %s, entry %d: %s",
2030 data.append((False, "Invalid result from the remote node"))
2032 for ((inst, _), status) in zip(disks, data):
2033 instdisk.setdefault(inst, {}).setdefault(nname, []).append(status)
2035 # Add empty entries for diskless instances.
2036 for inst in diskless_instances:
2037 assert inst not in instdisk
2040 assert compat.all(len(statuses) == len(instanceinfo[inst].disks) and
2041 len(nnames) <= len(instanceinfo[inst].all_nodes) and
2042 compat.all(isinstance(s, (tuple, list)) and
2043 len(s) == 2 for s in statuses)
2044 for inst, nnames in instdisk.items()
2045 for nname, statuses in nnames.items())
2046 assert set(instdisk) == set(instanceinfo), "instdisk consistency failure"
2050 def _VerifyHVP(self, hvp_data):
2051 """Verifies locally the syntax of the hypervisor parameters.
2054 for item, hv_name, hv_params in hvp_data:
2055 msg = ("hypervisor %s parameters syntax check (source %s): %%s" %
2058 hv_class = hypervisor.GetHypervisor(hv_name)
2059 utils.ForceDictType(hv_params, constants.HVS_PARAMETER_TYPES)
2060 hv_class.CheckParameterSyntax(hv_params)
2061 except errors.GenericError, err:
2062 self._ErrorIf(True, self.ECLUSTERCFG, None, msg % str(err))
2065 def BuildHooksEnv(self):
2068 Cluster-Verify hooks just ran in the post phase and their failure makes
2069 the output be logged in the verify output and the verification to fail.
2072 all_nodes = self.cfg.GetNodeList()
2074 "CLUSTER_TAGS": " ".join(self.cfg.GetClusterInfo().GetTags())
2076 for node in self.cfg.GetAllNodesInfo().values():
2077 env["NODE_TAGS_%s" % node.name] = " ".join(node.GetTags())
2079 return env, [], all_nodes
2081 def Exec(self, feedback_fn):
2082 """Verify integrity of cluster, performing various test on nodes.
2085 # This method has too many local variables. pylint: disable-msg=R0914
2087 _ErrorIf = self._ErrorIf # pylint: disable-msg=C0103
2088 verbose = self.op.verbose
2089 self._feedback_fn = feedback_fn
2090 feedback_fn("* Verifying global settings")
2091 for msg in self.cfg.VerifyConfig():
2092 _ErrorIf(True, self.ECLUSTERCFG, None, msg)
2094 # Check the cluster certificates
2095 for cert_filename in constants.ALL_CERT_FILES:
2096 (errcode, msg) = _VerifyCertificate(cert_filename)
2097 _ErrorIf(errcode, self.ECLUSTERCERT, None, msg, code=errcode)
2099 vg_name = self.cfg.GetVGName()
2100 drbd_helper = self.cfg.GetDRBDHelper()
2101 hypervisors = self.cfg.GetClusterInfo().enabled_hypervisors
2102 cluster = self.cfg.GetClusterInfo()
2103 nodelist = utils.NiceSort(self.cfg.GetNodeList())
2104 nodeinfo = [self.cfg.GetNodeInfo(nname) for nname in nodelist]
2105 nodeinfo_byname = dict(zip(nodelist, nodeinfo))
2106 instancelist = utils.NiceSort(self.cfg.GetInstanceList())
2107 instanceinfo = dict((iname, self.cfg.GetInstanceInfo(iname))
2108 for iname in instancelist)
2109 groupinfo = self.cfg.GetAllNodeGroupsInfo()
2110 i_non_redundant = [] # Non redundant instances
2111 i_non_a_balanced = [] # Non auto-balanced instances
2112 n_offline = 0 # Count of offline nodes
2113 n_drained = 0 # Count of nodes being drained
2114 node_vol_should = {}
2116 # FIXME: verify OS list
2117 # do local checksums
2118 master_files = [constants.CLUSTER_CONF_FILE]
2119 master_node = self.master_node = self.cfg.GetMasterNode()
2120 master_ip = self.cfg.GetMasterIP()
2122 file_names = ssconf.SimpleStore().GetFileList()
2123 file_names.extend(constants.ALL_CERT_FILES)
2124 file_names.extend(master_files)
2125 if cluster.modify_etc_hosts:
2126 file_names.append(constants.ETC_HOSTS)
2128 local_checksums = utils.FingerprintFiles(file_names)
2130 # Compute the set of hypervisor parameters
2132 for hv_name in hypervisors:
2133 hvp_data.append(("cluster", hv_name, cluster.GetHVDefaults(hv_name)))
2134 for os_name, os_hvp in cluster.os_hvp.items():
2135 for hv_name, hv_params in os_hvp.items():
2138 full_params = cluster.GetHVDefaults(hv_name, os_name=os_name)
2139 hvp_data.append(("os %s" % os_name, hv_name, full_params))
2140 # TODO: collapse identical parameter values in a single one
2141 for instance in instanceinfo.values():
2142 if not instance.hvparams:
2144 hvp_data.append(("instance %s" % instance.name, instance.hypervisor,
2145 cluster.FillHV(instance)))
2146 # and verify them locally
2147 self._VerifyHVP(hvp_data)
2149 feedback_fn("* Gathering data (%d nodes)" % len(nodelist))
2150 node_verify_param = {
2151 constants.NV_FILELIST: file_names,
2152 constants.NV_NODELIST: [node.name for node in nodeinfo
2153 if not node.offline],
2154 constants.NV_HYPERVISOR: hypervisors,
2155 constants.NV_HVPARAMS: hvp_data,
2156 constants.NV_NODENETTEST: [(node.name, node.primary_ip,
2157 node.secondary_ip) for node in nodeinfo
2158 if not node.offline],
2159 constants.NV_INSTANCELIST: hypervisors,
2160 constants.NV_VERSION: None,
2161 constants.NV_HVINFO: self.cfg.GetHypervisorType(),
2162 constants.NV_NODESETUP: None,
2163 constants.NV_TIME: None,
2164 constants.NV_MASTERIP: (master_node, master_ip),
2165 constants.NV_OSLIST: None,
2166 constants.NV_VMNODES: self.cfg.GetNonVmCapableNodeList(),
2169 if vg_name is not None:
2170 node_verify_param[constants.NV_VGLIST] = None
2171 node_verify_param[constants.NV_LVLIST] = vg_name
2172 node_verify_param[constants.NV_PVLIST] = [vg_name]
2173 node_verify_param[constants.NV_DRBDLIST] = None
2176 node_verify_param[constants.NV_DRBDHELPER] = drbd_helper
2178 # Build our expected cluster state
2179 node_image = dict((node.name, self.NodeImage(offline=node.offline,
2181 vm_capable=node.vm_capable))
2182 for node in nodeinfo)
2186 for node in nodeinfo:
2187 path = _SupportsOob(self.cfg, node)
2188 if path and path not in oob_paths:
2189 oob_paths.append(path)
2192 node_verify_param[constants.NV_OOB_PATHS] = oob_paths
2194 for instance in instancelist:
2195 inst_config = instanceinfo[instance]
2197 for nname in inst_config.all_nodes:
2198 if nname not in node_image:
2200 gnode = self.NodeImage(name=nname)
2202 node_image[nname] = gnode
2204 inst_config.MapLVsByNode(node_vol_should)
2206 pnode = inst_config.primary_node
2207 node_image[pnode].pinst.append(instance)
2209 for snode in inst_config.secondary_nodes:
2210 nimg = node_image[snode]
2211 nimg.sinst.append(instance)
2212 if pnode not in nimg.sbp:
2213 nimg.sbp[pnode] = []
2214 nimg.sbp[pnode].append(instance)
2216 # At this point, we have the in-memory data structures complete,
2217 # except for the runtime information, which we'll gather next
2219 # Due to the way our RPC system works, exact response times cannot be
2220 # guaranteed (e.g. a broken node could run into a timeout). By keeping the
2221 # time before and after executing the request, we can at least have a time
2223 nvinfo_starttime = time.time()
2224 all_nvinfo = self.rpc.call_node_verify(nodelist, node_verify_param,
2225 self.cfg.GetClusterName())
2226 nvinfo_endtime = time.time()
2228 all_drbd_map = self.cfg.ComputeDRBDMap()
2230 feedback_fn("* Gathering disk information (%s nodes)" % len(nodelist))
2231 instdisk = self._CollectDiskInfo(nodelist, node_image, instanceinfo)
2233 feedback_fn("* Verifying node status")
2237 for node_i in nodeinfo:
2239 nimg = node_image[node]
2243 feedback_fn("* Skipping offline node %s" % (node,))
2247 if node == master_node:
2249 elif node_i.master_candidate:
2250 ntype = "master candidate"
2251 elif node_i.drained:
2257 feedback_fn("* Verifying node %s (%s)" % (node, ntype))
2259 msg = all_nvinfo[node].fail_msg
2260 _ErrorIf(msg, self.ENODERPC, node, "while contacting node: %s", msg)
2262 nimg.rpc_fail = True
2265 nresult = all_nvinfo[node].payload
2267 nimg.call_ok = self._VerifyNode(node_i, nresult)
2268 self._VerifyNodeTime(node_i, nresult, nvinfo_starttime, nvinfo_endtime)
2269 self._VerifyNodeNetwork(node_i, nresult)
2270 self._VerifyNodeFiles(node_i, nresult, file_names, local_checksums,
2273 self._VerifyOob(node_i, nresult)
2276 self._VerifyNodeLVM(node_i, nresult, vg_name)
2277 self._VerifyNodeDrbd(node_i, nresult, instanceinfo, drbd_helper,
2280 self._UpdateNodeVolumes(node_i, nresult, nimg, vg_name)
2281 self._UpdateNodeInstances(node_i, nresult, nimg)
2282 self._UpdateNodeInfo(node_i, nresult, nimg, vg_name)
2283 self._UpdateNodeOS(node_i, nresult, nimg)
2284 if not nimg.os_fail:
2285 if refos_img is None:
2287 self._VerifyNodeOS(node_i, nimg, refos_img)
2289 feedback_fn("* Verifying instance status")
2290 for instance in instancelist:
2292 feedback_fn("* Verifying instance %s" % instance)
2293 inst_config = instanceinfo[instance]
2294 self._VerifyInstance(instance, inst_config, node_image,
2296 inst_nodes_offline = []
2298 pnode = inst_config.primary_node
2299 pnode_img = node_image[pnode]
2300 _ErrorIf(pnode_img.rpc_fail and not pnode_img.offline,
2301 self.ENODERPC, pnode, "instance %s, connection to"
2302 " primary node failed", instance)
2304 _ErrorIf(pnode_img.offline, self.EINSTANCEBADNODE, instance,
2305 "instance lives on offline node %s", inst_config.primary_node)
2307 # If the instance is non-redundant we cannot survive losing its primary
2308 # node, so we are not N+1 compliant. On the other hand we have no disk
2309 # templates with more than one secondary so that situation is not well
2311 # FIXME: does not support file-backed instances
2312 if not inst_config.secondary_nodes:
2313 i_non_redundant.append(instance)
2315 _ErrorIf(len(inst_config.secondary_nodes) > 1, self.EINSTANCELAYOUT,
2316 instance, "instance has multiple secondary nodes: %s",
2317 utils.CommaJoin(inst_config.secondary_nodes),
2318 code=self.ETYPE_WARNING)
2320 if inst_config.disk_template in constants.DTS_NET_MIRROR:
2321 pnode = inst_config.primary_node
2322 instance_nodes = utils.NiceSort(inst_config.all_nodes)
2323 instance_groups = {}
2325 for node in instance_nodes:
2326 instance_groups.setdefault(nodeinfo_byname[node].group,
2330 "%s (group %s)" % (utils.CommaJoin(nodes), groupinfo[group].name)
2331 # Sort so that we always list the primary node first.
2332 for group, nodes in sorted(instance_groups.items(),
2333 key=lambda (_, nodes): pnode in nodes,
2336 self._ErrorIf(len(instance_groups) > 1, self.EINSTANCESPLITGROUPS,
2337 instance, "instance has primary and secondary nodes in"
2338 " different groups: %s", utils.CommaJoin(pretty_list),
2339 code=self.ETYPE_WARNING)
2341 if not cluster.FillBE(inst_config)[constants.BE_AUTO_BALANCE]:
2342 i_non_a_balanced.append(instance)
2344 for snode in inst_config.secondary_nodes:
2345 s_img = node_image[snode]
2346 _ErrorIf(s_img.rpc_fail and not s_img.offline, self.ENODERPC, snode,
2347 "instance %s, connection to secondary node failed", instance)
2350 inst_nodes_offline.append(snode)
2352 # warn that the instance lives on offline nodes
2353 _ErrorIf(inst_nodes_offline, self.EINSTANCEBADNODE, instance,
2354 "instance has offline secondary node(s) %s",
2355 utils.CommaJoin(inst_nodes_offline))
2356 # ... or ghost/non-vm_capable nodes
2357 for node in inst_config.all_nodes:
2358 _ErrorIf(node_image[node].ghost, self.EINSTANCEBADNODE, instance,
2359 "instance lives on ghost node %s", node)
2360 _ErrorIf(not node_image[node].vm_capable, self.EINSTANCEBADNODE,
2361 instance, "instance lives on non-vm_capable node %s", node)
2363 feedback_fn("* Verifying orphan volumes")
2364 reserved = utils.FieldSet(*cluster.reserved_lvs)
2365 self._VerifyOrphanVolumes(node_vol_should, node_image, reserved)
2367 feedback_fn("* Verifying orphan instances")
2368 self._VerifyOrphanInstances(instancelist, node_image)
2370 if constants.VERIFY_NPLUSONE_MEM not in self.op.skip_checks:
2371 feedback_fn("* Verifying N+1 Memory redundancy")
2372 self._VerifyNPlusOneMemory(node_image, instanceinfo)
2374 feedback_fn("* Other Notes")
2376 feedback_fn(" - NOTICE: %d non-redundant instance(s) found."
2377 % len(i_non_redundant))
2379 if i_non_a_balanced:
2380 feedback_fn(" - NOTICE: %d non-auto-balanced instance(s) found."
2381 % len(i_non_a_balanced))
2384 feedback_fn(" - NOTICE: %d offline node(s) found." % n_offline)
2387 feedback_fn(" - NOTICE: %d drained node(s) found." % n_drained)
2391 def HooksCallBack(self, phase, hooks_results, feedback_fn, lu_result):
2392 """Analyze the post-hooks' result
2394 This method analyses the hook result, handles it, and sends some
2395 nicely-formatted feedback back to the user.
2397 @param phase: one of L{constants.HOOKS_PHASE_POST} or
2398 L{constants.HOOKS_PHASE_PRE}; it denotes the hooks phase
2399 @param hooks_results: the results of the multi-node hooks rpc call
2400 @param feedback_fn: function used send feedback back to the caller
2401 @param lu_result: previous Exec result
2402 @return: the new Exec result, based on the previous result
2406 # We only really run POST phase hooks, and are only interested in
2408 if phase == constants.HOOKS_PHASE_POST:
2409 # Used to change hooks' output to proper indentation
2410 feedback_fn("* Hooks Results")
2411 assert hooks_results, "invalid result from hooks"
2413 for node_name in hooks_results:
2414 res = hooks_results[node_name]
2416 test = msg and not res.offline
2417 self._ErrorIf(test, self.ENODEHOOKS, node_name,
2418 "Communication failure in hooks execution: %s", msg)
2419 if res.offline or msg:
2420 # No need to investigate payload if node is offline or gave an error.
2421 # override manually lu_result here as _ErrorIf only
2422 # overrides self.bad
2425 for script, hkr, output in res.payload:
2426 test = hkr == constants.HKR_FAIL
2427 self._ErrorIf(test, self.ENODEHOOKS, node_name,
2428 "Script %s failed, output:", script)
2430 output = self._HOOKS_INDENT_RE.sub(' ', output)
2431 feedback_fn("%s" % output)
2437 class LUClusterVerifyDisks(NoHooksLU):
2438 """Verifies the cluster disks status.
2443 def ExpandNames(self):
2444 self.needed_locks = {
2445 locking.LEVEL_NODE: locking.ALL_SET,
2446 locking.LEVEL_INSTANCE: locking.ALL_SET,
2448 self.share_locks = dict.fromkeys(locking.LEVELS, 1)
2450 def Exec(self, feedback_fn):
2451 """Verify integrity of cluster disks.
2453 @rtype: tuple of three items
2454 @return: a tuple of (dict of node-to-node_error, list of instances
2455 which need activate-disks, dict of instance: (node, volume) for
2459 result = res_nodes, res_instances, res_missing = {}, [], {}
2461 nodes = utils.NiceSort(self.cfg.GetVmCapableNodeList())
2462 instances = self.cfg.GetAllInstancesInfo().values()
2465 for inst in instances:
2467 if not inst.admin_up:
2469 inst.MapLVsByNode(inst_lvs)
2470 # transform { iname: {node: [vol,],},} to {(node, vol): iname}
2471 for node, vol_list in inst_lvs.iteritems():
2472 for vol in vol_list:
2473 nv_dict[(node, vol)] = inst
2478 node_lvs = self.rpc.call_lv_list(nodes, [])
2479 for node, node_res in node_lvs.items():
2480 if node_res.offline:
2482 msg = node_res.fail_msg
2484 logging.warning("Error enumerating LVs on node %s: %s", node, msg)
2485 res_nodes[node] = msg
2488 lvs = node_res.payload
2489 for lv_name, (_, _, lv_online) in lvs.items():
2490 inst = nv_dict.pop((node, lv_name), None)
2491 if (not lv_online and inst is not None
2492 and inst.name not in res_instances):
2493 res_instances.append(inst.name)
2495 # any leftover items in nv_dict are missing LVs, let's arrange the
2497 for key, inst in nv_dict.iteritems():
2498 if inst.name not in res_missing:
2499 res_missing[inst.name] = []
2500 res_missing[inst.name].append(key)
2505 class LUClusterRepairDiskSizes(NoHooksLU):
2506 """Verifies the cluster disks sizes.
2511 def ExpandNames(self):
2512 if self.op.instances:
2513 self.wanted_names = []
2514 for name in self.op.instances:
2515 full_name = _ExpandInstanceName(self.cfg, name)
2516 self.wanted_names.append(full_name)
2517 self.needed_locks = {
2518 locking.LEVEL_NODE: [],
2519 locking.LEVEL_INSTANCE: self.wanted_names,
2521 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
2523 self.wanted_names = None
2524 self.needed_locks = {
2525 locking.LEVEL_NODE: locking.ALL_SET,
2526 locking.LEVEL_INSTANCE: locking.ALL_SET,
2528 self.share_locks = dict(((i, 1) for i in locking.LEVELS))
2530 def DeclareLocks(self, level):
2531 if level == locking.LEVEL_NODE and self.wanted_names is not None:
2532 self._LockInstancesNodes(primary_only=True)
2534 def CheckPrereq(self):
2535 """Check prerequisites.
2537 This only checks the optional instance list against the existing names.
2540 if self.wanted_names is None:
2541 self.wanted_names = self.acquired_locks[locking.LEVEL_INSTANCE]
2543 self.wanted_instances = [self.cfg.GetInstanceInfo(name) for name
2544 in self.wanted_names]
2546 def _EnsureChildSizes(self, disk):
2547 """Ensure children of the disk have the needed disk size.
2549 This is valid mainly for DRBD8 and fixes an issue where the
2550 children have smaller disk size.
2552 @param disk: an L{ganeti.objects.Disk} object
2555 if disk.dev_type == constants.LD_DRBD8:
2556 assert disk.children, "Empty children for DRBD8?"
2557 fchild = disk.children[0]
2558 mismatch = fchild.size < disk.size
2560 self.LogInfo("Child disk has size %d, parent %d, fixing",
2561 fchild.size, disk.size)
2562 fchild.size = disk.size
2564 # and we recurse on this child only, not on the metadev
2565 return self._EnsureChildSizes(fchild) or mismatch
2569 def Exec(self, feedback_fn):
2570 """Verify the size of cluster disks.
2573 # TODO: check child disks too
2574 # TODO: check differences in size between primary/secondary nodes
2576 for instance in self.wanted_instances:
2577 pnode = instance.primary_node
2578 if pnode not in per_node_disks:
2579 per_node_disks[pnode] = []
2580 for idx, disk in enumerate(instance.disks):
2581 per_node_disks[pnode].append((instance, idx, disk))
2584 for node, dskl in per_node_disks.items():
2585 newl = [v[2].Copy() for v in dskl]
2587 self.cfg.SetDiskID(dsk, node)
2588 result = self.rpc.call_blockdev_getsize(node, newl)
2590 self.LogWarning("Failure in blockdev_getsize call to node"
2591 " %s, ignoring", node)
2593 if len(result.payload) != len(dskl):
2594 logging.warning("Invalid result from node %s: len(dksl)=%d,"
2595 " result.payload=%s", node, len(dskl), result.payload)
2596 self.LogWarning("Invalid result from node %s, ignoring node results",
2599 for ((instance, idx, disk), size) in zip(dskl, result.payload):
2601 self.LogWarning("Disk %d of instance %s did not return size"
2602 " information, ignoring", idx, instance.name)
2604 if not isinstance(size, (int, long)):
2605 self.LogWarning("Disk %d of instance %s did not return valid"
2606 " size information, ignoring", idx, instance.name)
2609 if size != disk.size:
2610 self.LogInfo("Disk %d of instance %s has mismatched size,"
2611 " correcting: recorded %d, actual %d", idx,
2612 instance.name, disk.size, size)
2614 self.cfg.Update(instance, feedback_fn)
2615 changed.append((instance.name, idx, size))
2616 if self._EnsureChildSizes(disk):
2617 self.cfg.Update(instance, feedback_fn)
2618 changed.append((instance.name, idx, disk.size))
2622 class LUClusterRename(LogicalUnit):
2623 """Rename the cluster.
2626 HPATH = "cluster-rename"
2627 HTYPE = constants.HTYPE_CLUSTER
2629 def BuildHooksEnv(self):
2634 "OP_TARGET": self.cfg.GetClusterName(),
2635 "NEW_NAME": self.op.name,
2637 mn = self.cfg.GetMasterNode()
2638 all_nodes = self.cfg.GetNodeList()
2639 return env, [mn], all_nodes
2641 def CheckPrereq(self):
2642 """Verify that the passed name is a valid one.
2645 hostname = netutils.GetHostname(name=self.op.name,
2646 family=self.cfg.GetPrimaryIPFamily())
2648 new_name = hostname.name
2649 self.ip = new_ip = hostname.ip
2650 old_name = self.cfg.GetClusterName()
2651 old_ip = self.cfg.GetMasterIP()
2652 if new_name == old_name and new_ip == old_ip:
2653 raise errors.OpPrereqError("Neither the name nor the IP address of the"
2654 " cluster has changed",
2656 if new_ip != old_ip:
2657 if netutils.TcpPing(new_ip, constants.DEFAULT_NODED_PORT):
2658 raise errors.OpPrereqError("The given cluster IP address (%s) is"
2659 " reachable on the network" %
2660 new_ip, errors.ECODE_NOTUNIQUE)
2662 self.op.name = new_name
2664 def Exec(self, feedback_fn):
2665 """Rename the cluster.
2668 clustername = self.op.name
2671 # shutdown the master IP
2672 master = self.cfg.GetMasterNode()
2673 result = self.rpc.call_node_stop_master(master, False)
2674 result.Raise("Could not disable the master role")
2677 cluster = self.cfg.GetClusterInfo()
2678 cluster.cluster_name = clustername
2679 cluster.master_ip = ip
2680 self.cfg.Update(cluster, feedback_fn)
2682 # update the known hosts file
2683 ssh.WriteKnownHostsFile(self.cfg, constants.SSH_KNOWN_HOSTS_FILE)
2684 node_list = self.cfg.GetOnlineNodeList()
2686 node_list.remove(master)
2689 _UploadHelper(self, node_list, constants.SSH_KNOWN_HOSTS_FILE)
2691 result = self.rpc.call_node_start_master(master, False, False)
2692 msg = result.fail_msg
2694 self.LogWarning("Could not re-enable the master role on"
2695 " the master, please restart manually: %s", msg)
2700 class LUClusterSetParams(LogicalUnit):
2701 """Change the parameters of the cluster.
2704 HPATH = "cluster-modify"
2705 HTYPE = constants.HTYPE_CLUSTER
2708 def CheckArguments(self):
2712 if self.op.uid_pool:
2713 uidpool.CheckUidPool(self.op.uid_pool)
2715 if self.op.add_uids:
2716 uidpool.CheckUidPool(self.op.add_uids)
2718 if self.op.remove_uids:
2719 uidpool.CheckUidPool(self.op.remove_uids)
2721 def ExpandNames(self):
2722 # FIXME: in the future maybe other cluster params won't require checking on
2723 # all nodes to be modified.
2724 self.needed_locks = {
2725 locking.LEVEL_NODE: locking.ALL_SET,
2727 self.share_locks[locking.LEVEL_NODE] = 1
2729 def BuildHooksEnv(self):
2734 "OP_TARGET": self.cfg.GetClusterName(),
2735 "NEW_VG_NAME": self.op.vg_name,
2737 mn = self.cfg.GetMasterNode()
2738 return env, [mn], [mn]
2740 def CheckPrereq(self):
2741 """Check prerequisites.
2743 This checks whether the given params don't conflict and
2744 if the given volume group is valid.
2747 if self.op.vg_name is not None and not self.op.vg_name:
2748 if self.cfg.HasAnyDiskOfType(constants.LD_LV):
2749 raise errors.OpPrereqError("Cannot disable lvm storage while lvm-based"
2750 " instances exist", errors.ECODE_INVAL)
2752 if self.op.drbd_helper is not None and not self.op.drbd_helper:
2753 if self.cfg.HasAnyDiskOfType(constants.LD_DRBD8):
2754 raise errors.OpPrereqError("Cannot disable drbd helper while"
2755 " drbd-based instances exist",
2758 node_list = self.acquired_locks[locking.LEVEL_NODE]
2760 # if vg_name not None, checks given volume group on all nodes
2762 vglist = self.rpc.call_vg_list(node_list)
2763 for node in node_list:
2764 msg = vglist[node].fail_msg
2766 # ignoring down node
2767 self.LogWarning("Error while gathering data on node %s"
2768 " (ignoring node): %s", node, msg)
2770 vgstatus = utils.CheckVolumeGroupSize(vglist[node].payload,
2772 constants.MIN_VG_SIZE)
2774 raise errors.OpPrereqError("Error on node '%s': %s" %
2775 (node, vgstatus), errors.ECODE_ENVIRON)
2777 if self.op.drbd_helper:
2778 # checks given drbd helper on all nodes
2779 helpers = self.rpc.call_drbd_helper(node_list)
2780 for node in node_list:
2781 ninfo = self.cfg.GetNodeInfo(node)
2783 self.LogInfo("Not checking drbd helper on offline node %s", node)
2785 msg = helpers[node].fail_msg
2787 raise errors.OpPrereqError("Error checking drbd helper on node"
2788 " '%s': %s" % (node, msg),
2789 errors.ECODE_ENVIRON)
2790 node_helper = helpers[node].payload
2791 if node_helper != self.op.drbd_helper:
2792 raise errors.OpPrereqError("Error on node '%s': drbd helper is %s" %
2793 (node, node_helper), errors.ECODE_ENVIRON)
2795 self.cluster = cluster = self.cfg.GetClusterInfo()
2796 # validate params changes
2797 if self.op.beparams:
2798 utils.ForceDictType(self.op.beparams, constants.BES_PARAMETER_TYPES)
2799 self.new_beparams = cluster.SimpleFillBE(self.op.beparams)
2801 if self.op.ndparams:
2802 utils.ForceDictType(self.op.ndparams, constants.NDS_PARAMETER_TYPES)
2803 self.new_ndparams = cluster.SimpleFillND(self.op.ndparams)
2805 # TODO: we need a more general way to handle resetting
2806 # cluster-level parameters to default values
2807 if self.new_ndparams["oob_program"] == "":
2808 self.new_ndparams["oob_program"] = \
2809 constants.NDC_DEFAULTS[constants.ND_OOB_PROGRAM]
2811 if self.op.nicparams:
2812 utils.ForceDictType(self.op.nicparams, constants.NICS_PARAMETER_TYPES)
2813 self.new_nicparams = cluster.SimpleFillNIC(self.op.nicparams)
2814 objects.NIC.CheckParameterSyntax(self.new_nicparams)
2817 # check all instances for consistency
2818 for instance in self.cfg.GetAllInstancesInfo().values():
2819 for nic_idx, nic in enumerate(instance.nics):
2820 params_copy = copy.deepcopy(nic.nicparams)
2821 params_filled = objects.FillDict(self.new_nicparams, params_copy)
2823 # check parameter syntax
2825 objects.NIC.CheckParameterSyntax(params_filled)
2826 except errors.ConfigurationError, err:
2827 nic_errors.append("Instance %s, nic/%d: %s" %
2828 (instance.name, nic_idx, err))
2830 # if we're moving instances to routed, check that they have an ip
2831 target_mode = params_filled[constants.NIC_MODE]
2832 if target_mode == constants.NIC_MODE_ROUTED and not nic.ip:
2833 nic_errors.append("Instance %s, nic/%d: routed nick with no ip" %
2834 (instance.name, nic_idx))
2836 raise errors.OpPrereqError("Cannot apply the change, errors:\n%s" %
2837 "\n".join(nic_errors))
2839 # hypervisor list/parameters
2840 self.new_hvparams = new_hvp = objects.FillDict(cluster.hvparams, {})
2841 if self.op.hvparams:
2842 for hv_name, hv_dict in self.op.hvparams.items():
2843 if hv_name not in self.new_hvparams:
2844 self.new_hvparams[hv_name] = hv_dict
2846 self.new_hvparams[hv_name].update(hv_dict)
2848 # os hypervisor parameters
2849 self.new_os_hvp = objects.FillDict(cluster.os_hvp, {})
2851 for os_name, hvs in self.op.os_hvp.items():
2852 if os_name not in self.new_os_hvp:
2853 self.new_os_hvp[os_name] = hvs
2855 for hv_name, hv_dict in hvs.items():
2856 if hv_name not in self.new_os_hvp[os_name]:
2857 self.new_os_hvp[os_name][hv_name] = hv_dict
2859 self.new_os_hvp[os_name][hv_name].update(hv_dict)
2862 self.new_osp = objects.FillDict(cluster.osparams, {})
2863 if self.op.osparams:
2864 for os_name, osp in self.op.osparams.items():
2865 if os_name not in self.new_osp:
2866 self.new_osp[os_name] = {}
2868 self.new_osp[os_name] = _GetUpdatedParams(self.new_osp[os_name], osp,
2871 if not self.new_osp[os_name]:
2872 # we removed all parameters
2873 del self.new_osp[os_name]
2875 # check the parameter validity (remote check)
2876 _CheckOSParams(self, False, [self.cfg.GetMasterNode()],
2877 os_name, self.new_osp[os_name])
2879 # changes to the hypervisor list
2880 if self.op.enabled_hypervisors is not None:
2881 self.hv_list = self.op.enabled_hypervisors
2882 for hv in self.hv_list:
2883 # if the hypervisor doesn't already exist in the cluster
2884 # hvparams, we initialize it to empty, and then (in both
2885 # cases) we make sure to fill the defaults, as we might not
2886 # have a complete defaults list if the hypervisor wasn't
2888 if hv not in new_hvp:
2890 new_hvp[hv] = objects.FillDict(constants.HVC_DEFAULTS[hv], new_hvp[hv])
2891 utils.ForceDictType(new_hvp[hv], constants.HVS_PARAMETER_TYPES)
2893 self.hv_list = cluster.enabled_hypervisors
2895 if self.op.hvparams or self.op.enabled_hypervisors is not None:
2896 # either the enabled list has changed, or the parameters have, validate
2897 for hv_name, hv_params in self.new_hvparams.items():
2898 if ((self.op.hvparams and hv_name in self.op.hvparams) or
2899 (self.op.enabled_hypervisors and
2900 hv_name in self.op.enabled_hypervisors)):
2901 # either this is a new hypervisor, or its parameters have changed
2902 hv_class = hypervisor.GetHypervisor(hv_name)
2903 utils.ForceDictType(hv_params, constants.HVS_PARAMETER_TYPES)
2904 hv_class.CheckParameterSyntax(hv_params)
2905 _CheckHVParams(self, node_list, hv_name, hv_params)
2908 # no need to check any newly-enabled hypervisors, since the
2909 # defaults have already been checked in the above code-block
2910 for os_name, os_hvp in self.new_os_hvp.items():
2911 for hv_name, hv_params in os_hvp.items():
2912 utils.ForceDictType(hv_params, constants.HVS_PARAMETER_TYPES)
2913 # we need to fill in the new os_hvp on top of the actual hv_p
2914 cluster_defaults = self.new_hvparams.get(hv_name, {})
2915 new_osp = objects.FillDict(cluster_defaults, hv_params)
2916 hv_class = hypervisor.GetHypervisor(hv_name)
2917 hv_class.CheckParameterSyntax(new_osp)
2918 _CheckHVParams(self, node_list, hv_name, new_osp)
2920 if self.op.default_iallocator:
2921 alloc_script = utils.FindFile(self.op.default_iallocator,
2922 constants.IALLOCATOR_SEARCH_PATH,
2924 if alloc_script is None:
2925 raise errors.OpPrereqError("Invalid default iallocator script '%s'"
2926 " specified" % self.op.default_iallocator,
2929 def Exec(self, feedback_fn):
2930 """Change the parameters of the cluster.
2933 if self.op.vg_name is not None:
2934 new_volume = self.op.vg_name
2937 if new_volume != self.cfg.GetVGName():
2938 self.cfg.SetVGName(new_volume)
2940 feedback_fn("Cluster LVM configuration already in desired"
2941 " state, not changing")
2942 if self.op.drbd_helper is not None:
2943 new_helper = self.op.drbd_helper
2946 if new_helper != self.cfg.GetDRBDHelper():
2947 self.cfg.SetDRBDHelper(new_helper)
2949 feedback_fn("Cluster DRBD helper already in desired state,"
2951 if self.op.hvparams:
2952 self.cluster.hvparams = self.new_hvparams
2954 self.cluster.os_hvp = self.new_os_hvp
2955 if self.op.enabled_hypervisors is not None:
2956 self.cluster.hvparams = self.new_hvparams
2957 self.cluster.enabled_hypervisors = self.op.enabled_hypervisors
2958 if self.op.beparams:
2959 self.cluster.beparams[constants.PP_DEFAULT] = self.new_beparams
2960 if self.op.nicparams:
2961 self.cluster.nicparams[constants.PP_DEFAULT] = self.new_nicparams
2962 if self.op.osparams:
2963 self.cluster.osparams = self.new_osp
2964 if self.op.ndparams:
2965 self.cluster.ndparams = self.new_ndparams
2967 if self.op.candidate_pool_size is not None:
2968 self.cluster.candidate_pool_size = self.op.candidate_pool_size
2969 # we need to update the pool size here, otherwise the save will fail
2970 _AdjustCandidatePool(self, [])
2972 if self.op.maintain_node_health is not None:
2973 self.cluster.maintain_node_health = self.op.maintain_node_health
2975 if self.op.prealloc_wipe_disks is not None:
2976 self.cluster.prealloc_wipe_disks = self.op.prealloc_wipe_disks
2978 if self.op.add_uids is not None:
2979 uidpool.AddToUidPool(self.cluster.uid_pool, self.op.add_uids)
2981 if self.op.remove_uids is not None:
2982 uidpool.RemoveFromUidPool(self.cluster.uid_pool, self.op.remove_uids)
2984 if self.op.uid_pool is not None:
2985 self.cluster.uid_pool = self.op.uid_pool
2987 if self.op.default_iallocator is not None:
2988 self.cluster.default_iallocator = self.op.default_iallocator
2990 if self.op.reserved_lvs is not None:
2991 self.cluster.reserved_lvs = self.op.reserved_lvs
2993 def helper_os(aname, mods, desc):
2995 lst = getattr(self.cluster, aname)
2996 for key, val in mods:
2997 if key == constants.DDM_ADD:
2999 feedback_fn("OS %s already in %s, ignoring" % (val, desc))
3002 elif key == constants.DDM_REMOVE:
3006 feedback_fn("OS %s not found in %s, ignoring" % (val, desc))
3008 raise errors.ProgrammerError("Invalid modification '%s'" % key)
3010 if self.op.hidden_os:
3011 helper_os("hidden_os", self.op.hidden_os, "hidden")
3013 if self.op.blacklisted_os:
3014 helper_os("blacklisted_os", self.op.blacklisted_os, "blacklisted")
3016 if self.op.master_netdev:
3017 master = self.cfg.GetMasterNode()
3018 feedback_fn("Shutting down master ip on the current netdev (%s)" %
3019 self.cluster.master_netdev)
3020 result = self.rpc.call_node_stop_master(master, False)
3021 result.Raise("Could not disable the master ip")
3022 feedback_fn("Changing master_netdev from %s to %s" %
3023 (self.cluster.master_netdev, self.op.master_netdev))
3024 self.cluster.master_netdev = self.op.master_netdev
3026 self.cfg.Update(self.cluster, feedback_fn)
3028 if self.op.master_netdev:
3029 feedback_fn("Starting the master ip on the new master netdev (%s)" %
3030 self.op.master_netdev)
3031 result = self.rpc.call_node_start_master(master, False, False)
3033 self.LogWarning("Could not re-enable the master ip on"
3034 " the master, please restart manually: %s",
3038 def _UploadHelper(lu, nodes, fname):
3039 """Helper for uploading a file and showing warnings.
3042 if os.path.exists(fname):
3043 result = lu.rpc.call_upload_file(nodes, fname)
3044 for to_node, to_result in result.items():
3045 msg = to_result.fail_msg
3047 msg = ("Copy of file %s to node %s failed: %s" %
3048 (fname, to_node, msg))
3049 lu.proc.LogWarning(msg)
3052 def _RedistributeAncillaryFiles(lu, additional_nodes=None, additional_vm=True):
3053 """Distribute additional files which are part of the cluster configuration.
3055 ConfigWriter takes care of distributing the config and ssconf files, but
3056 there are more files which should be distributed to all nodes. This function
3057 makes sure those are copied.
3059 @param lu: calling logical unit
3060 @param additional_nodes: list of nodes not in the config to distribute to
3061 @type additional_vm: boolean
3062 @param additional_vm: whether the additional nodes are vm-capable or not
3065 # 1. Gather target nodes
3066 myself = lu.cfg.GetNodeInfo(lu.cfg.GetMasterNode())
3067 dist_nodes = lu.cfg.GetOnlineNodeList()
3068 nvm_nodes = lu.cfg.GetNonVmCapableNodeList()
3069 vm_nodes = [name for name in dist_nodes if name not in nvm_nodes]
3070 if additional_nodes is not None:
3071 dist_nodes.extend(additional_nodes)
3073 vm_nodes.extend(additional_nodes)
3074 if myself.name in dist_nodes:
3075 dist_nodes.remove(myself.name)
3076 if myself.name in vm_nodes:
3077 vm_nodes.remove(myself.name)
3079 # 2. Gather files to distribute
3080 dist_files = set([constants.ETC_HOSTS,
3081 constants.SSH_KNOWN_HOSTS_FILE,
3082 constants.RAPI_CERT_FILE,
3083 constants.RAPI_USERS_FILE,
3084 constants.CONFD_HMAC_KEY,
3085 constants.CLUSTER_DOMAIN_SECRET_FILE,
3089 enabled_hypervisors = lu.cfg.GetClusterInfo().enabled_hypervisors
3090 for hv_name in enabled_hypervisors:
3091 hv_class = hypervisor.GetHypervisor(hv_name)
3092 vm_files.update(hv_class.GetAncillaryFiles())
3094 # 3. Perform the files upload
3095 for fname in dist_files:
3096 _UploadHelper(lu, dist_nodes, fname)
3097 for fname in vm_files:
3098 _UploadHelper(lu, vm_nodes, fname)
3101 class LUClusterRedistConf(NoHooksLU):
3102 """Force the redistribution of cluster configuration.
3104 This is a very simple LU.
3109 def ExpandNames(self):
3110 self.needed_locks = {
3111 locking.LEVEL_NODE: locking.ALL_SET,
3113 self.share_locks[locking.LEVEL_NODE] = 1
3115 def Exec(self, feedback_fn):
3116 """Redistribute the configuration.
3119 self.cfg.Update(self.cfg.GetClusterInfo(), feedback_fn)
3120 _RedistributeAncillaryFiles(self)
3123 def _WaitForSync(lu, instance, disks=None, oneshot=False):
3124 """Sleep and poll for an instance's disk to sync.
3127 if not instance.disks or disks is not None and not disks:
3130 disks = _ExpandCheckDisks(instance, disks)
3133 lu.proc.LogInfo("Waiting for instance %s to sync disks." % instance.name)
3135 node = instance.primary_node
3138 lu.cfg.SetDiskID(dev, node)
3140 # TODO: Convert to utils.Retry
3143 degr_retries = 10 # in seconds, as we sleep 1 second each time
3147 cumul_degraded = False
3148 rstats = lu.rpc.call_blockdev_getmirrorstatus(node, disks)
3149 msg = rstats.fail_msg
3151 lu.LogWarning("Can't get any data from node %s: %s", node, msg)
3154 raise errors.RemoteError("Can't contact node %s for mirror data,"
3155 " aborting." % node)
3158 rstats = rstats.payload
3160 for i, mstat in enumerate(rstats):
3162 lu.LogWarning("Can't compute data for node %s/%s",
3163 node, disks[i].iv_name)
3166 cumul_degraded = (cumul_degraded or
3167 (mstat.is_degraded and mstat.sync_percent is None))
3168 if mstat.sync_percent is not None:
3170 if mstat.estimated_time is not None:
3171 rem_time = ("%s remaining (estimated)" %
3172 utils.FormatSeconds(mstat.estimated_time))
3173 max_time = mstat.estimated_time
3175 rem_time = "no time estimate"
3176 lu.proc.LogInfo("- device %s: %5.2f%% done, %s" %
3177 (disks[i].iv_name, mstat.sync_percent, rem_time))
3179 # if we're done but degraded, let's do a few small retries, to
3180 # make sure we see a stable and not transient situation; therefore
3181 # we force restart of the loop
3182 if (done or oneshot) and cumul_degraded and degr_retries > 0:
3183 logging.info("Degraded disks found, %d retries left", degr_retries)
3191 time.sleep(min(60, max_time))
3194 lu.proc.LogInfo("Instance %s's disks are in sync." % instance.name)
3195 return not cumul_degraded
3198 def _CheckDiskConsistency(lu, dev, node, on_primary, ldisk=False):
3199 """Check that mirrors are not degraded.
3201 The ldisk parameter, if True, will change the test from the
3202 is_degraded attribute (which represents overall non-ok status for
3203 the device(s)) to the ldisk (representing the local storage status).
3206 lu.cfg.SetDiskID(dev, node)
3210 if on_primary or dev.AssembleOnSecondary():
3211 rstats = lu.rpc.call_blockdev_find(node, dev)
3212 msg = rstats.fail_msg
3214 lu.LogWarning("Can't find disk on node %s: %s", node, msg)
3216 elif not rstats.payload:
3217 lu.LogWarning("Can't find disk on node %s", node)
3221 result = result and rstats.payload.ldisk_status == constants.LDS_OKAY
3223 result = result and not rstats.payload.is_degraded
3226 for child in dev.children:
3227 result = result and _CheckDiskConsistency(lu, child, node, on_primary)
3232 class LUOobCommand(NoHooksLU):
3233 """Logical unit for OOB handling.
3238 def CheckPrereq(self):
3239 """Check prerequisites.
3242 - the node exists in the configuration
3245 Any errors are signaled by raising errors.OpPrereqError.
3249 for node_name in self.op.node_names:
3250 node = self.cfg.GetNodeInfo(node_name)
3253 raise errors.OpPrereqError("Node %s not found" % node_name,
3256 self.nodes.append(node)
3258 if (self.op.command == constants.OOB_POWER_OFF and not node.offline):
3259 raise errors.OpPrereqError(("Cannot power off node %s because it is"
3260 " not marked offline") % node_name,
3263 def ExpandNames(self):
3264 """Gather locks we need.
3267 if self.op.node_names:
3268 self.op.node_names = [_ExpandNodeName(self.cfg, name)
3269 for name in self.op.node_names]
3271 self.op.node_names = self.cfg.GetNodeList()
3273 self.needed_locks = {
3274 locking.LEVEL_NODE: self.op.node_names,
3277 def Exec(self, feedback_fn):
3278 """Execute OOB and return result if we expect any.
3281 master_node = self.cfg.GetMasterNode()
3284 for node in self.nodes:
3285 node_entry = [(constants.RS_NORMAL, node.name)]
3286 ret.append(node_entry)
3288 oob_program = _SupportsOob(self.cfg, node)
3291 node_entry.append((constants.RS_UNAVAIL, None))
3294 logging.info("Executing out-of-band command '%s' using '%s' on %s",
3295 self.op.command, oob_program, node.name)
3296 result = self.rpc.call_run_oob(master_node, oob_program,
3297 self.op.command, node.name,
3301 self.LogWarning("On node '%s' out-of-band RPC failed with: %s",
3302 node.name, result.fail_msg)
3303 node_entry.append((constants.RS_NODATA, None))
3306 self._CheckPayload(result)
3307 except errors.OpExecError, err:
3308 self.LogWarning("The payload returned by '%s' is not valid: %s",
3310 node_entry.append((constants.RS_NODATA, None))
3312 if self.op.command == constants.OOB_HEALTH:
3313 # For health we should log important events
3314 for item, status in result.payload:
3315 if status in [constants.OOB_STATUS_WARNING,
3316 constants.OOB_STATUS_CRITICAL]:
3317 self.LogWarning("On node '%s' item '%s' has status '%s'",
3318 node.name, item, status)
3320 if self.op.command == constants.OOB_POWER_ON:
3322 elif self.op.command == constants.OOB_POWER_OFF:
3323 node.powered = False
3324 elif self.op.command == constants.OOB_POWER_STATUS:
3325 powered = result.payload[constants.OOB_POWER_STATUS_POWERED]
3326 if powered != node.powered:
3327 logging.warning(("Recorded power state (%s) of node '%s' does not"
3328 " match actual power state (%s)"), node.powered,
3331 # For configuration changing commands we should update the node
3332 if self.op.command in (constants.OOB_POWER_ON,
3333 constants.OOB_POWER_OFF):
3334 self.cfg.Update(node, feedback_fn)
3336 node_entry.append((constants.RS_NORMAL, result.payload))
3340 def _CheckPayload(self, result):
3341 """Checks if the payload is valid.
3343 @param result: RPC result
3344 @raises errors.OpExecError: If payload is not valid
3348 if self.op.command == constants.OOB_HEALTH:
3349 if not isinstance(result.payload, list):
3350 errs.append("command 'health' is expected to return a list but got %s" %
3351 type(result.payload))
3353 for item, status in result.payload:
3354 if status not in constants.OOB_STATUSES:
3355 errs.append("health item '%s' has invalid status '%s'" %
3358 if self.op.command == constants.OOB_POWER_STATUS:
3359 if not isinstance(result.payload, dict):
3360 errs.append("power-status is expected to return a dict but got %s" %
3361 type(result.payload))
3363 if self.op.command in [
3364 constants.OOB_POWER_ON,
3365 constants.OOB_POWER_OFF,
3366 constants.OOB_POWER_CYCLE,
3368 if result.payload is not None:
3369 errs.append("%s is expected to not return payload but got '%s'" %
3370 (self.op.command, result.payload))
3373 raise errors.OpExecError("Check of out-of-band payload failed due to %s" %
3374 utils.CommaJoin(errs))
3378 class LUOsDiagnose(NoHooksLU):
3379 """Logical unit for OS diagnose/query.
3384 _BLK = "blacklisted"
3386 _FIELDS_STATIC = utils.FieldSet()
3387 _FIELDS_DYNAMIC = utils.FieldSet("name", _VLD, "node_status", "variants",
3388 "parameters", "api_versions", _HID, _BLK)
3390 def CheckArguments(self):
3392 raise errors.OpPrereqError("Selective OS query not supported",
3395 _CheckOutputFields(static=self._FIELDS_STATIC,
3396 dynamic=self._FIELDS_DYNAMIC,
3397 selected=self.op.output_fields)
3399 def ExpandNames(self):
3400 # Lock all nodes, in shared mode
3401 # Temporary removal of locks, should be reverted later
3402 # TODO: reintroduce locks when they are lighter-weight
3403 self.needed_locks = {}
3404 #self.share_locks[locking.LEVEL_NODE] = 1
3405 #self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
3408 def _DiagnoseByOS(rlist):
3409 """Remaps a per-node return list into an a per-os per-node dictionary
3411 @param rlist: a map with node names as keys and OS objects as values
3414 @return: a dictionary with osnames as keys and as value another
3415 map, with nodes as keys and tuples of (path, status, diagnose,
3416 variants, parameters, api_versions) as values, eg::
3418 {"debian-etch": {"node1": [(/usr/lib/..., True, "", [], []),
3419 (/srv/..., False, "invalid api")],
3420 "node2": [(/srv/..., True, "", [], [])]}
3425 # we build here the list of nodes that didn't fail the RPC (at RPC
3426 # level), so that nodes with a non-responding node daemon don't
3427 # make all OSes invalid
3428 good_nodes = [node_name for node_name in rlist
3429 if not rlist[node_name].fail_msg]
3430 for node_name, nr in rlist.items():
3431 if nr.fail_msg or not nr.payload:
3433 for (name, path, status, diagnose, variants,
3434 params, api_versions) in nr.payload:
3435 if name not in all_os:
3436 # build a list of nodes for this os containing empty lists
3437 # for each node in node_list
3439 for nname in good_nodes:
3440 all_os[name][nname] = []
3441 # convert params from [name, help] to (name, help)
3442 params = [tuple(v) for v in params]
3443 all_os[name][node_name].append((path, status, diagnose,
3444 variants, params, api_versions))
3447 def Exec(self, feedback_fn):
3448 """Compute the list of OSes.
3451 valid_nodes = [node.name
3452 for node in self.cfg.GetAllNodesInfo().values()
3453 if not node.offline and node.vm_capable]
3454 node_data = self.rpc.call_os_diagnose(valid_nodes)
3455 pol = self._DiagnoseByOS(node_data)
3457 cluster = self.cfg.GetClusterInfo()
3459 for os_name in utils.NiceSort(pol.keys()):
3460 os_data = pol[os_name]
3463 (variants, params, api_versions) = null_state = (set(), set(), set())
3464 for idx, osl in enumerate(os_data.values()):
3465 valid = bool(valid and osl and osl[0][1])
3467 (variants, params, api_versions) = null_state
3469 node_variants, node_params, node_api = osl[0][3:6]
3470 if idx == 0: # first entry
3471 variants = set(node_variants)
3472 params = set(node_params)
3473 api_versions = set(node_api)
3474 else: # keep consistency
3475 variants.intersection_update(node_variants)
3476 params.intersection_update(node_params)
3477 api_versions.intersection_update(node_api)
3479 is_hid = os_name in cluster.hidden_os
3480 is_blk = os_name in cluster.blacklisted_os
3481 if ((self._HID not in self.op.output_fields and is_hid) or
3482 (self._BLK not in self.op.output_fields and is_blk) or
3483 (self._VLD not in self.op.output_fields and not valid)):
3486 for field in self.op.output_fields:
3489 elif field == self._VLD:
3491 elif field == "node_status":
3492 # this is just a copy of the dict
3494 for node_name, nos_list in os_data.items():
3495 val[node_name] = nos_list
3496 elif field == "variants":
3497 val = utils.NiceSort(list(variants))
3498 elif field == "parameters":
3500 elif field == "api_versions":
3501 val = list(api_versions)
3502 elif field == self._HID:
3504 elif field == self._BLK:
3507 raise errors.ParameterError(field)
3514 class LUNodeRemove(LogicalUnit):
3515 """Logical unit for removing a node.
3518 HPATH = "node-remove"
3519 HTYPE = constants.HTYPE_NODE
3521 def BuildHooksEnv(self):
3524 This doesn't run on the target node in the pre phase as a failed
3525 node would then be impossible to remove.
3529 "OP_TARGET": self.op.node_name,
3530 "NODE_NAME": self.op.node_name,
3532 all_nodes = self.cfg.GetNodeList()
3534 all_nodes.remove(self.op.node_name)
3536 logging.warning("Node %s which is about to be removed not found"
3537 " in the all nodes list", self.op.node_name)
3538 return env, all_nodes, all_nodes
3540 def CheckPrereq(self):
3541 """Check prerequisites.
3544 - the node exists in the configuration
3545 - it does not have primary or secondary instances
3546 - it's not the master
3548 Any errors are signaled by raising errors.OpPrereqError.
3551 self.op.node_name = _ExpandNodeName(self.cfg, self.op.node_name)
3552 node = self.cfg.GetNodeInfo(self.op.node_name)
3553 assert node is not None
3555 instance_list = self.cfg.GetInstanceList()
3557 masternode = self.cfg.GetMasterNode()
3558 if node.name == masternode:
3559 raise errors.OpPrereqError("Node is the master node,"
3560 " you need to failover first.",
3563 for instance_name in instance_list:
3564 instance = self.cfg.GetInstanceInfo(instance_name)
3565 if node.name in instance.all_nodes:
3566 raise errors.OpPrereqError("Instance %s is still running on the node,"
3567 " please remove first." % instance_name,
3569 self.op.node_name = node.name
3572 def Exec(self, feedback_fn):
3573 """Removes the node from the cluster.
3577 logging.info("Stopping the node daemon and removing configs from node %s",
3580 modify_ssh_setup = self.cfg.GetClusterInfo().modify_ssh_setup
3582 # Promote nodes to master candidate as needed
3583 _AdjustCandidatePool(self, exceptions=[node.name])
3584 self.context.RemoveNode(node.name)
3586 # Run post hooks on the node before it's removed
3587 hm = self.proc.hmclass(self.rpc.call_hooks_runner, self)
3589 hm.RunPhase(constants.HOOKS_PHASE_POST, [node.name])
3591 # pylint: disable-msg=W0702
3592 self.LogWarning("Errors occurred running hooks on %s" % node.name)
3594 result = self.rpc.call_node_leave_cluster(node.name, modify_ssh_setup)
3595 msg = result.fail_msg
3597 self.LogWarning("Errors encountered on the remote node while leaving"
3598 " the cluster: %s", msg)
3600 # Remove node from our /etc/hosts
3601 if self.cfg.GetClusterInfo().modify_etc_hosts:
3602 master_node = self.cfg.GetMasterNode()
3603 result = self.rpc.call_etc_hosts_modify(master_node,
3604 constants.ETC_HOSTS_REMOVE,
3606 result.Raise("Can't update hosts file with new host data")
3607 _RedistributeAncillaryFiles(self)
3610 class _NodeQuery(_QueryBase):
3611 FIELDS = query.NODE_FIELDS
3613 def ExpandNames(self, lu):
3614 lu.needed_locks = {}
3615 lu.share_locks[locking.LEVEL_NODE] = 1
3618 self.wanted = _GetWantedNodes(lu, self.names)
3620 self.wanted = locking.ALL_SET
3622 self.do_locking = (self.use_locking and
3623 query.NQ_LIVE in self.requested_data)
3626 # if we don't request only static fields, we need to lock the nodes
3627 lu.needed_locks[locking.LEVEL_NODE] = self.wanted
3629 def DeclareLocks(self, lu, level):
3632 def _GetQueryData(self, lu):
3633 """Computes the list of nodes and their attributes.
3636 all_info = lu.cfg.GetAllNodesInfo()
3638 nodenames = self._GetNames(lu, all_info.keys(), locking.LEVEL_NODE)
3640 # Gather data as requested
3641 if query.NQ_LIVE in self.requested_data:
3642 # filter out non-vm_capable nodes
3643 toquery_nodes = [name for name in nodenames if all_info[name].vm_capable]
3645 node_data = lu.rpc.call_node_info(toquery_nodes, lu.cfg.GetVGName(),
3646 lu.cfg.GetHypervisorType())
3647 live_data = dict((name, nresult.payload)
3648 for (name, nresult) in node_data.items()
3649 if not nresult.fail_msg and nresult.payload)
3653 if query.NQ_INST in self.requested_data:
3654 node_to_primary = dict([(name, set()) for name in nodenames])
3655 node_to_secondary = dict([(name, set()) for name in nodenames])
3657 inst_data = lu.cfg.GetAllInstancesInfo()
3659 for inst in inst_data.values():
3660 if inst.primary_node in node_to_primary:
3661 node_to_primary[inst.primary_node].add(inst.name)
3662 for secnode in inst.secondary_nodes:
3663 if secnode in node_to_secondary:
3664 node_to_secondary[secnode].add(inst.name)
3666 node_to_primary = None
3667 node_to_secondary = None
3669 if query.NQ_OOB in self.requested_data:
3670 oob_support = dict((name, bool(_SupportsOob(lu.cfg, node)))
3671 for name, node in all_info.iteritems())
3675 if query.NQ_GROUP in self.requested_data:
3676 groups = lu.cfg.GetAllNodeGroupsInfo()
3680 return query.NodeQueryData([all_info[name] for name in nodenames],
3681 live_data, lu.cfg.GetMasterNode(),
3682 node_to_primary, node_to_secondary, groups,
3683 oob_support, lu.cfg.GetClusterInfo())
3686 class LUNodeQuery(NoHooksLU):
3687 """Logical unit for querying nodes.
3690 # pylint: disable-msg=W0142
3693 def CheckArguments(self):
3694 self.nq = _NodeQuery(self.op.names, self.op.output_fields,
3695 self.op.use_locking)
3697 def ExpandNames(self):
3698 self.nq.ExpandNames(self)
3700 def Exec(self, feedback_fn):
3701 return self.nq.OldStyleQuery(self)
3704 class LUNodeQueryvols(NoHooksLU):
3705 """Logical unit for getting volumes on node(s).
3709 _FIELDS_DYNAMIC = utils.FieldSet("phys", "vg", "name", "size", "instance")
3710 _FIELDS_STATIC = utils.FieldSet("node")
3712 def CheckArguments(self):
3713 _CheckOutputFields(static=self._FIELDS_STATIC,
3714 dynamic=self._FIELDS_DYNAMIC,
3715 selected=self.op.output_fields)
3717 def ExpandNames(self):
3718 self.needed_locks = {}
3719 self.share_locks[locking.LEVEL_NODE] = 1
3720 if not self.op.nodes:
3721 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
3723 self.needed_locks[locking.LEVEL_NODE] = \
3724 _GetWantedNodes(self, self.op.nodes)
3726 def Exec(self, feedback_fn):
3727 """Computes the list of nodes and their attributes.
3730 nodenames = self.acquired_locks[locking.LEVEL_NODE]
3731 volumes = self.rpc.call_node_volumes(nodenames)
3733 ilist = [self.cfg.GetInstanceInfo(iname) for iname
3734 in self.cfg.GetInstanceList()]
3736 lv_by_node = dict([(inst, inst.MapLVsByNode()) for inst in ilist])
3739 for node in nodenames:
3740 nresult = volumes[node]
3743 msg = nresult.fail_msg
3745 self.LogWarning("Can't compute volume data on node %s: %s", node, msg)
3748 node_vols = nresult.payload[:]
3749 node_vols.sort(key=lambda vol: vol['dev'])
3751 for vol in node_vols:
3753 for field in self.op.output_fields:
3756 elif field == "phys":
3760 elif field == "name":
3762 elif field == "size":
3763 val = int(float(vol['size']))
3764 elif field == "instance":
3766 if node not in lv_by_node[inst]:
3768 if vol['name'] in lv_by_node[inst][node]:
3774 raise errors.ParameterError(field)
3775 node_output.append(str(val))
3777 output.append(node_output)
3782 class LUNodeQueryStorage(NoHooksLU):
3783 """Logical unit for getting information on storage units on node(s).
3786 _FIELDS_STATIC = utils.FieldSet(constants.SF_NODE)
3789 def CheckArguments(self):
3790 _CheckOutputFields(static=self._FIELDS_STATIC,
3791 dynamic=utils.FieldSet(*constants.VALID_STORAGE_FIELDS),
3792 selected=self.op.output_fields)
3794 def ExpandNames(self):
3795 self.needed_locks = {}
3796 self.share_locks[locking.LEVEL_NODE] = 1
3799 self.needed_locks[locking.LEVEL_NODE] = \
3800 _GetWantedNodes(self, self.op.nodes)
3802 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
3804 def Exec(self, feedback_fn):
3805 """Computes the list of nodes and their attributes.
3808 self.nodes = self.acquired_locks[locking.LEVEL_NODE]
3810 # Always get name to sort by
3811 if constants.SF_NAME in self.op.output_fields:
3812 fields = self.op.output_fields[:]
3814 fields = [constants.SF_NAME] + self.op.output_fields
3816 # Never ask for node or type as it's only known to the LU
3817 for extra in [constants.SF_NODE, constants.SF_TYPE]:
3818 while extra in fields:
3819 fields.remove(extra)
3821 field_idx = dict([(name, idx) for (idx, name) in enumerate(fields)])
3822 name_idx = field_idx[constants.SF_NAME]
3824 st_args = _GetStorageTypeArgs(self.cfg, self.op.storage_type)
3825 data = self.rpc.call_storage_list(self.nodes,
3826 self.op.storage_type, st_args,
3827 self.op.name, fields)
3831 for node in utils.NiceSort(self.nodes):
3832 nresult = data[node]
3836 msg = nresult.fail_msg
3838 self.LogWarning("Can't get storage data from node %s: %s", node, msg)
3841 rows = dict([(row[name_idx], row) for row in nresult.payload])
3843 for name in utils.NiceSort(rows.keys()):
3848 for field in self.op.output_fields:
3849 if field == constants.SF_NODE:
3851 elif field == constants.SF_TYPE:
3852 val = self.op.storage_type
3853 elif field in field_idx:
3854 val = row[field_idx[field]]
3856 raise errors.ParameterError(field)
3865 class _InstanceQuery(_QueryBase):
3866 FIELDS = query.INSTANCE_FIELDS
3868 def ExpandNames(self, lu):
3869 lu.needed_locks = {}
3870 lu.share_locks[locking.LEVEL_INSTANCE] = 1
3871 lu.share_locks[locking.LEVEL_NODE] = 1
3874 self.wanted = _GetWantedInstances(lu, self.names)
3876 self.wanted = locking.ALL_SET
3878 self.do_locking = (self.use_locking and
3879 query.IQ_LIVE in self.requested_data)
3881 lu.needed_locks[locking.LEVEL_INSTANCE] = self.wanted
3882 lu.needed_locks[locking.LEVEL_NODE] = []
3883 lu.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3885 def DeclareLocks(self, lu, level):
3886 if level == locking.LEVEL_NODE and self.do_locking:
3887 lu._LockInstancesNodes() # pylint: disable-msg=W0212
3889 def _GetQueryData(self, lu):
3890 """Computes the list of instances and their attributes.
3893 cluster = lu.cfg.GetClusterInfo()
3894 all_info = lu.cfg.GetAllInstancesInfo()
3896 instance_names = self._GetNames(lu, all_info.keys(), locking.LEVEL_INSTANCE)
3898 instance_list = [all_info[name] for name in instance_names]
3899 nodes = frozenset(itertools.chain(*(inst.all_nodes
3900 for inst in instance_list)))
3901 hv_list = list(set([inst.hypervisor for inst in instance_list]))
3904 wrongnode_inst = set()
3906 # Gather data as requested
3907 if self.requested_data & set([query.IQ_LIVE, query.IQ_CONSOLE]):
3909 node_data = lu.rpc.call_all_instances_info(nodes, hv_list)
3911 result = node_data[name]
3913 # offline nodes will be in both lists
3914 assert result.fail_msg
3915 offline_nodes.append(name)
3917 bad_nodes.append(name)
3918 elif result.payload:
3919 for inst in result.payload:
3920 if inst in all_info:
3921 if all_info[inst].primary_node == name:
3922 live_data.update(result.payload)
3924 wrongnode_inst.add(inst)
3926 # orphan instance; we don't list it here as we don't
3927 # handle this case yet in the output of instance listing
3928 logging.warning("Orphan instance '%s' found on node %s",
3930 # else no instance is alive
3934 if query.IQ_DISKUSAGE in self.requested_data:
3935 disk_usage = dict((inst.name,
3936 _ComputeDiskSize(inst.disk_template,
3937 [{"size": disk.size}
3938 for disk in inst.disks]))
3939 for inst in instance_list)
3943 if query.IQ_CONSOLE in self.requested_data:
3945 for inst in instance_list:
3946 if inst.name in live_data:
3947 # Instance is running
3948 consinfo[inst.name] = _GetInstanceConsole(cluster, inst)
3950 consinfo[inst.name] = None
3951 assert set(consinfo.keys()) == set(instance_names)
3955 return query.InstanceQueryData(instance_list, lu.cfg.GetClusterInfo(),
3956 disk_usage, offline_nodes, bad_nodes,
3957 live_data, wrongnode_inst, consinfo)
3960 class LUQuery(NoHooksLU):
3961 """Query for resources/items of a certain kind.
3964 # pylint: disable-msg=W0142
3967 def CheckArguments(self):
3968 qcls = _GetQueryImplementation(self.op.what)
3969 names = qlang.ReadSimpleFilter("name", self.op.filter)
3971 self.impl = qcls(names, self.op.fields, False)
3973 def ExpandNames(self):
3974 self.impl.ExpandNames(self)
3976 def DeclareLocks(self, level):
3977 self.impl.DeclareLocks(self, level)
3979 def Exec(self, feedback_fn):
3980 return self.impl.NewStyleQuery(self)
3983 class LUQueryFields(NoHooksLU):
3984 """Query for resources/items of a certain kind.
3987 # pylint: disable-msg=W0142
3990 def CheckArguments(self):
3991 self.qcls = _GetQueryImplementation(self.op.what)
3993 def ExpandNames(self):
3994 self.needed_locks = {}
3996 def Exec(self, feedback_fn):
3997 return self.qcls.FieldsQuery(self.op.fields)
4000 class LUNodeModifyStorage(NoHooksLU):
4001 """Logical unit for modifying a storage volume on a node.
4006 def CheckArguments(self):
4007 self.op.node_name = _ExpandNodeName(self.cfg, self.op.node_name)
4009 storage_type = self.op.storage_type
4012 modifiable = constants.MODIFIABLE_STORAGE_FIELDS[storage_type]
4014 raise errors.OpPrereqError("Storage units of type '%s' can not be"
4015 " modified" % storage_type,
4018 diff = set(self.op.changes.keys()) - modifiable
4020 raise errors.OpPrereqError("The following fields can not be modified for"
4021 " storage units of type '%s': %r" %
4022 (storage_type, list(diff)),
4025 def ExpandNames(self):
4026 self.needed_locks = {
4027 locking.LEVEL_NODE: self.op.node_name,
4030 def Exec(self, feedback_fn):
4031 """Computes the list of nodes and their attributes.
4034 st_args = _GetStorageTypeArgs(self.cfg, self.op.storage_type)
4035 result = self.rpc.call_storage_modify(self.op.node_name,
4036 self.op.storage_type, st_args,
4037 self.op.name, self.op.changes)
4038 result.Raise("Failed to modify storage unit '%s' on %s" %
4039 (self.op.name, self.op.node_name))
4042 class LUNodeAdd(LogicalUnit):
4043 """Logical unit for adding node to the cluster.
4047 HTYPE = constants.HTYPE_NODE
4048 _NFLAGS = ["master_capable", "vm_capable"]
4050 def CheckArguments(self):
4051 self.primary_ip_family = self.cfg.GetPrimaryIPFamily()
4052 # validate/normalize the node name
4053 self.hostname = netutils.GetHostname(name=self.op.node_name,
4054 family=self.primary_ip_family)
4055 self.op.node_name = self.hostname.name
4056 if self.op.readd and self.op.group:
4057 raise errors.OpPrereqError("Cannot pass a node group when a node is"
4058 " being readded", errors.ECODE_INVAL)
4060 def BuildHooksEnv(self):
4063 This will run on all nodes before, and on all nodes + the new node after.
4067 "OP_TARGET": self.op.node_name,
4068 "NODE_NAME": self.op.node_name,
4069 "NODE_PIP": self.op.primary_ip,
4070 "NODE_SIP": self.op.secondary_ip,
4071 "MASTER_CAPABLE": str(self.op.master_capable),
4072 "VM_CAPABLE": str(self.op.vm_capable),
4074 nodes_0 = self.cfg.GetNodeList()
4075 nodes_1 = nodes_0 + [self.op.node_name, ]
4076 return env, nodes_0, nodes_1
4078 def CheckPrereq(self):
4079 """Check prerequisites.
4082 - the new node is not already in the config
4084 - its parameters (single/dual homed) matches the cluster
4086 Any errors are signaled by raising errors.OpPrereqError.
4090 hostname = self.hostname
4091 node = hostname.name
4092 primary_ip = self.op.primary_ip = hostname.ip
4093 if self.op.secondary_ip is None:
4094 if self.primary_ip_family == netutils.IP6Address.family:
4095 raise errors.OpPrereqError("When using a IPv6 primary address, a valid"
4096 " IPv4 address must be given as secondary",
4098 self.op.secondary_ip = primary_ip
4100 secondary_ip = self.op.secondary_ip
4101 if not netutils.IP4Address.IsValid(secondary_ip):
4102 raise errors.OpPrereqError("Secondary IP (%s) needs to be a valid IPv4"
4103 " address" % secondary_ip, errors.ECODE_INVAL)
4105 node_list = cfg.GetNodeList()
4106 if not self.op.readd and node in node_list:
4107 raise errors.OpPrereqError("Node %s is already in the configuration" %
4108 node, errors.ECODE_EXISTS)
4109 elif self.op.readd and node not in node_list:
4110 raise errors.OpPrereqError("Node %s is not in the configuration" % node,
4113 self.changed_primary_ip = False
4115 for existing_node_name in node_list:
4116 existing_node = cfg.GetNodeInfo(existing_node_name)
4118 if self.op.readd and node == existing_node_name:
4119 if existing_node.secondary_ip != secondary_ip:
4120 raise errors.OpPrereqError("Readded node doesn't have the same IP"
4121 " address configuration as before",
4123 if existing_node.primary_ip != primary_ip:
4124 self.changed_primary_ip = True
4128 if (existing_node.primary_ip == primary_ip or
4129 existing_node.secondary_ip == primary_ip or
4130 existing_node.primary_ip == secondary_ip or
4131 existing_node.secondary_ip == secondary_ip):
4132 raise errors.OpPrereqError("New node ip address(es) conflict with"
4133 " existing node %s" % existing_node.name,
4134 errors.ECODE_NOTUNIQUE)
4136 # After this 'if' block, None is no longer a valid value for the
4137 # _capable op attributes
4139 old_node = self.cfg.GetNodeInfo(node)
4140 assert old_node is not None, "Can't retrieve locked node %s" % node
4141 for attr in self._NFLAGS:
4142 if getattr(self.op, attr) is None:
4143 setattr(self.op, attr, getattr(old_node, attr))
4145 for attr in self._NFLAGS:
4146 if getattr(self.op, attr) is None:
4147 setattr(self.op, attr, True)
4149 if self.op.readd and not self.op.vm_capable:
4150 pri, sec = cfg.GetNodeInstances(node)
4152 raise errors.OpPrereqError("Node %s being re-added with vm_capable"
4153 " flag set to false, but it already holds"
4154 " instances" % node,
4157 # check that the type of the node (single versus dual homed) is the
4158 # same as for the master
4159 myself = cfg.GetNodeInfo(self.cfg.GetMasterNode())
4160 master_singlehomed = myself.secondary_ip == myself.primary_ip
4161 newbie_singlehomed = secondary_ip == primary_ip
4162 if master_singlehomed != newbie_singlehomed:
4163 if master_singlehomed:
4164 raise errors.OpPrereqError("The master has no secondary ip but the"
4165 " new node has one",
4168 raise errors.OpPrereqError("The master has a secondary ip but the"
4169 " new node doesn't have one",
4172 # checks reachability
4173 if not netutils.TcpPing(primary_ip, constants.DEFAULT_NODED_PORT):
4174 raise errors.OpPrereqError("Node not reachable by ping",
4175 errors.ECODE_ENVIRON)
4177 if not newbie_singlehomed:
4178 # check reachability from my secondary ip to newbie's secondary ip
4179 if not netutils.TcpPing(secondary_ip, constants.DEFAULT_NODED_PORT,
4180 source=myself.secondary_ip):
4181 raise errors.OpPrereqError("Node secondary ip not reachable by TCP"
4182 " based ping to node daemon port",
4183 errors.ECODE_ENVIRON)
4190 if self.op.master_capable:
4191 self.master_candidate = _DecideSelfPromotion(self, exceptions=exceptions)
4193 self.master_candidate = False
4196 self.new_node = old_node
4198 node_group = cfg.LookupNodeGroup(self.op.group)
4199 self.new_node = objects.Node(name=node,
4200 primary_ip=primary_ip,
4201 secondary_ip=secondary_ip,
4202 master_candidate=self.master_candidate,
4203 offline=False, drained=False,
4206 if self.op.ndparams:
4207 utils.ForceDictType(self.op.ndparams, constants.NDS_PARAMETER_TYPES)
4209 def Exec(self, feedback_fn):
4210 """Adds the new node to the cluster.
4213 new_node = self.new_node
4214 node = new_node.name
4216 # We adding a new node so we assume it's powered
4217 new_node.powered = True
4219 # for re-adds, reset the offline/drained/master-candidate flags;
4220 # we need to reset here, otherwise offline would prevent RPC calls
4221 # later in the procedure; this also means that if the re-add
4222 # fails, we are left with a non-offlined, broken node
4224 new_node.drained = new_node.offline = False # pylint: disable-msg=W0201
4225 self.LogInfo("Readding a node, the offline/drained flags were reset")
4226 # if we demote the node, we do cleanup later in the procedure
4227 new_node.master_candidate = self.master_candidate
4228 if self.changed_primary_ip:
4229 new_node.primary_ip = self.op.primary_ip
4231 # copy the master/vm_capable flags
4232 for attr in self._NFLAGS:
4233 setattr(new_node, attr, getattr(self.op, attr))
4235 # notify the user about any possible mc promotion
4236 if new_node.master_candidate:
4237 self.LogInfo("Node will be a master candidate")
4239 if self.op.ndparams:
4240 new_node.ndparams = self.op.ndparams
4242 new_node.ndparams = {}
4244 # check connectivity
4245 result = self.rpc.call_version([node])[node]
4246 result.Raise("Can't get version information from node %s" % node)
4247 if constants.PROTOCOL_VERSION == result.payload:
4248 logging.info("Communication to node %s fine, sw version %s match",
4249 node, result.payload)
4251 raise errors.OpExecError("Version mismatch master version %s,"
4252 " node version %s" %
4253 (constants.PROTOCOL_VERSION, result.payload))
4255 # Add node to our /etc/hosts, and add key to known_hosts
4256 if self.cfg.GetClusterInfo().modify_etc_hosts:
4257 master_node = self.cfg.GetMasterNode()
4258 result = self.rpc.call_etc_hosts_modify(master_node,
4259 constants.ETC_HOSTS_ADD,
4262 result.Raise("Can't update hosts file with new host data")
4264 if new_node.secondary_ip != new_node.primary_ip:
4265 _CheckNodeHasSecondaryIP(self, new_node.name, new_node.secondary_ip,
4268 node_verify_list = [self.cfg.GetMasterNode()]
4269 node_verify_param = {
4270 constants.NV_NODELIST: [node],
4271 # TODO: do a node-net-test as well?
4274 result = self.rpc.call_node_verify(node_verify_list, node_verify_param,
4275 self.cfg.GetClusterName())
4276 for verifier in node_verify_list:
4277 result[verifier].Raise("Cannot communicate with node %s" % verifier)
4278 nl_payload = result[verifier].payload[constants.NV_NODELIST]
4280 for failed in nl_payload:
4281 feedback_fn("ssh/hostname verification failed"
4282 " (checking from %s): %s" %
4283 (verifier, nl_payload[failed]))
4284 raise errors.OpExecError("ssh/hostname verification failed.")
4287 _RedistributeAncillaryFiles(self)
4288 self.context.ReaddNode(new_node)
4289 # make sure we redistribute the config
4290 self.cfg.Update(new_node, feedback_fn)
4291 # and make sure the new node will not have old files around
4292 if not new_node.master_candidate:
4293 result = self.rpc.call_node_demote_from_mc(new_node.name)
4294 msg = result.fail_msg
4296 self.LogWarning("Node failed to demote itself from master"
4297 " candidate status: %s" % msg)
4299 _RedistributeAncillaryFiles(self, additional_nodes=[node],
4300 additional_vm=self.op.vm_capable)
4301 self.context.AddNode(new_node, self.proc.GetECId())
4304 class LUNodeSetParams(LogicalUnit):
4305 """Modifies the parameters of a node.
4307 @cvar _F2R: a dictionary from tuples of flags (mc, drained, offline)
4308 to the node role (as _ROLE_*)
4309 @cvar _R2F: a dictionary from node role to tuples of flags
4310 @cvar _FLAGS: a list of attribute names corresponding to the flags
4313 HPATH = "node-modify"
4314 HTYPE = constants.HTYPE_NODE
4316 (_ROLE_CANDIDATE, _ROLE_DRAINED, _ROLE_OFFLINE, _ROLE_REGULAR) = range(4)
4318 (True, False, False): _ROLE_CANDIDATE,
4319 (False, True, False): _ROLE_DRAINED,
4320 (False, False, True): _ROLE_OFFLINE,
4321 (False, False, False): _ROLE_REGULAR,
4323 _R2F = dict((v, k) for k, v in _F2R.items())
4324 _FLAGS = ["master_candidate", "drained", "offline"]
4326 def CheckArguments(self):
4327 self.op.node_name = _ExpandNodeName(self.cfg, self.op.node_name)
4328 all_mods = [self.op.offline, self.op.master_candidate, self.op.drained,
4329 self.op.master_capable, self.op.vm_capable,
4330 self.op.secondary_ip, self.op.ndparams]
4331 if all_mods.count(None) == len(all_mods):
4332 raise errors.OpPrereqError("Please pass at least one modification",
4334 if all_mods.count(True) > 1:
4335 raise errors.OpPrereqError("Can't set the node into more than one"
4336 " state at the same time",
4339 # Boolean value that tells us whether we might be demoting from MC
4340 self.might_demote = (self.op.master_candidate == False or
4341 self.op.offline == True or
4342 self.op.drained == True or
4343 self.op.master_capable == False)
4345 if self.op.secondary_ip:
4346 if not netutils.IP4Address.IsValid(self.op.secondary_ip):
4347 raise errors.OpPrereqError("Secondary IP (%s) needs to be a valid IPv4"
4348 " address" % self.op.secondary_ip,
4351 self.lock_all = self.op.auto_promote and self.might_demote
4352 self.lock_instances = self.op.secondary_ip is not None
4354 def ExpandNames(self):
4356 self.needed_locks = {locking.LEVEL_NODE: locking.ALL_SET}
4358 self.needed_locks = {locking.LEVEL_NODE: self.op.node_name}
4360 if self.lock_instances:
4361 self.needed_locks[locking.LEVEL_INSTANCE] = locking.ALL_SET
4363 def DeclareLocks(self, level):
4364 # If we have locked all instances, before waiting to lock nodes, release
4365 # all the ones living on nodes unrelated to the current operation.
4366 if level == locking.LEVEL_NODE and self.lock_instances:
4367 instances_release = []
4369 self.affected_instances = []
4370 if self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET:
4371 for instance_name in self.acquired_locks[locking.LEVEL_INSTANCE]:
4372 instance = self.context.cfg.GetInstanceInfo(instance_name)
4373 i_mirrored = instance.disk_template in constants.DTS_NET_MIRROR
4374 if i_mirrored and self.op.node_name in instance.all_nodes:
4375 instances_keep.append(instance_name)
4376 self.affected_instances.append(instance)
4378 instances_release.append(instance_name)
4379 if instances_release:
4380 self.context.glm.release(locking.LEVEL_INSTANCE, instances_release)
4381 self.acquired_locks[locking.LEVEL_INSTANCE] = instances_keep
4383 def BuildHooksEnv(self):
4386 This runs on the master node.
4390 "OP_TARGET": self.op.node_name,
4391 "MASTER_CANDIDATE": str(self.op.master_candidate),
4392 "OFFLINE": str(self.op.offline),
4393 "DRAINED": str(self.op.drained),
4394 "MASTER_CAPABLE": str(self.op.master_capable),
4395 "VM_CAPABLE": str(self.op.vm_capable),
4397 nl = [self.cfg.GetMasterNode(),
4401 def CheckPrereq(self):
4402 """Check prerequisites.
4404 This only checks the instance list against the existing names.
4407 node = self.node = self.cfg.GetNodeInfo(self.op.node_name)
4409 if (self.op.master_candidate is not None or
4410 self.op.drained is not None or
4411 self.op.offline is not None):
4412 # we can't change the master's node flags
4413 if self.op.node_name == self.cfg.GetMasterNode():
4414 raise errors.OpPrereqError("The master role can be changed"
4415 " only via master-failover",
4418 if self.op.master_candidate and not node.master_capable:
4419 raise errors.OpPrereqError("Node %s is not master capable, cannot make"
4420 " it a master candidate" % node.name,
4423 if self.op.vm_capable == False:
4424 (ipri, isec) = self.cfg.GetNodeInstances(self.op.node_name)
4426 raise errors.OpPrereqError("Node %s hosts instances, cannot unset"
4427 " the vm_capable flag" % node.name,
4430 if node.master_candidate and self.might_demote and not self.lock_all:
4431 assert not self.op.auto_promote, "auto_promote set but lock_all not"
4432 # check if after removing the current node, we're missing master
4434 (mc_remaining, mc_should, _) = \
4435 self.cfg.GetMasterCandidateStats(exceptions=[node.name])
4436 if mc_remaining < mc_should:
4437 raise errors.OpPrereqError("Not enough master candidates, please"
4438 " pass auto promote option to allow"
4439 " promotion", errors.ECODE_STATE)
4441 self.old_flags = old_flags = (node.master_candidate,
4442 node.drained, node.offline)
4443 assert old_flags in self._F2R, "Un-handled old flags %s" % str(old_flags)
4444 self.old_role = old_role = self._F2R[old_flags]
4446 # Check for ineffective changes
4447 for attr in self._FLAGS:
4448 if (getattr(self.op, attr) == False and getattr(node, attr) == False):
4449 self.LogInfo("Ignoring request to unset flag %s, already unset", attr)
4450 setattr(self.op, attr, None)
4452 # Past this point, any flag change to False means a transition
4453 # away from the respective state, as only real changes are kept
4455 # TODO: We might query the real power state if it supports OOB
4456 if _SupportsOob(self.cfg, node):
4457 if self.op.offline is False and not (node.powered or
4458 self.op.powered == True):
4459 raise errors.OpPrereqError(("Please power on node %s first before you"
4460 " can reset offline state") %
4462 elif self.op.powered is not None:
4463 raise errors.OpPrereqError(("Unable to change powered state for node %s"
4464 " which does not support out-of-band"
4465 " handling") % self.op.node_name)
4467 # If we're being deofflined/drained, we'll MC ourself if needed
4468 if (self.op.drained == False or self.op.offline == False or
4469 (self.op.master_capable and not node.master_capable)):
4470 if _DecideSelfPromotion(self):
4471 self.op.master_candidate = True
4472 self.LogInfo("Auto-promoting node to master candidate")
4474 # If we're no longer master capable, we'll demote ourselves from MC
4475 if self.op.master_capable == False and node.master_candidate:
4476 self.LogInfo("Demoting from master candidate")
4477 self.op.master_candidate = False
4480 assert [getattr(self.op, attr) for attr in self._FLAGS].count(True) <= 1
4481 if self.op.master_candidate:
4482 new_role = self._ROLE_CANDIDATE
4483 elif self.op.drained:
4484 new_role = self._ROLE_DRAINED
4485 elif self.op.offline:
4486 new_role = self._ROLE_OFFLINE
4487 elif False in [self.op.master_candidate, self.op.drained, self.op.offline]:
4488 # False is still in new flags, which means we're un-setting (the
4490 new_role = self._ROLE_REGULAR
4491 else: # no new flags, nothing, keep old role
4494 self.new_role = new_role
4496 if old_role == self._ROLE_OFFLINE and new_role != old_role:
4497 # Trying to transition out of offline status
4498 result = self.rpc.call_version([node.name])[node.name]
4500 raise errors.OpPrereqError("Node %s is being de-offlined but fails"
4501 " to report its version: %s" %
4502 (node.name, result.fail_msg),
4505 self.LogWarning("Transitioning node from offline to online state"
4506 " without using re-add. Please make sure the node"
4509 if self.op.secondary_ip:
4510 # Ok even without locking, because this can't be changed by any LU
4511 master = self.cfg.GetNodeInfo(self.cfg.GetMasterNode())
4512 master_singlehomed = master.secondary_ip == master.primary_ip
4513 if master_singlehomed and self.op.secondary_ip:
4514 raise errors.OpPrereqError("Cannot change the secondary ip on a single"
4515 " homed cluster", errors.ECODE_INVAL)
4518 if self.affected_instances:
4519 raise errors.OpPrereqError("Cannot change secondary ip: offline"
4520 " node has instances (%s) configured"
4521 " to use it" % self.affected_instances)
4523 # On online nodes, check that no instances are running, and that
4524 # the node has the new ip and we can reach it.
4525 for instance in self.affected_instances:
4526 _CheckInstanceDown(self, instance, "cannot change secondary ip")
4528 _CheckNodeHasSecondaryIP(self, node.name, self.op.secondary_ip, True)
4529 if master.name != node.name:
4530 # check reachability from master secondary ip to new secondary ip
4531 if not netutils.TcpPing(self.op.secondary_ip,
4532 constants.DEFAULT_NODED_PORT,
4533 source=master.secondary_ip):
4534 raise errors.OpPrereqError("Node secondary ip not reachable by TCP"
4535 " based ping to node daemon port",
4536 errors.ECODE_ENVIRON)
4538 if self.op.ndparams:
4539 new_ndparams = _GetUpdatedParams(self.node.ndparams, self.op.ndparams)
4540 utils.ForceDictType(new_ndparams, constants.NDS_PARAMETER_TYPES)
4541 self.new_ndparams = new_ndparams
4543 def Exec(self, feedback_fn):
4548 old_role = self.old_role
4549 new_role = self.new_role
4553 if self.op.ndparams:
4554 node.ndparams = self.new_ndparams
4556 if self.op.powered is not None:
4557 node.powered = self.op.powered
4559 for attr in ["master_capable", "vm_capable"]:
4560 val = getattr(self.op, attr)
4562 setattr(node, attr, val)
4563 result.append((attr, str(val)))
4565 if new_role != old_role:
4566 # Tell the node to demote itself, if no longer MC and not offline
4567 if old_role == self._ROLE_CANDIDATE and new_role != self._ROLE_OFFLINE:
4568 msg = self.rpc.call_node_demote_from_mc(node.name).fail_msg
4570 self.LogWarning("Node failed to demote itself: %s", msg)
4572 new_flags = self._R2F[new_role]
4573 for of, nf, desc in zip(self.old_flags, new_flags, self._FLAGS):
4575 result.append((desc, str(nf)))
4576 (node.master_candidate, node.drained, node.offline) = new_flags
4578 # we locked all nodes, we adjust the CP before updating this node
4580 _AdjustCandidatePool(self, [node.name])
4582 if self.op.secondary_ip:
4583 node.secondary_ip = self.op.secondary_ip
4584 result.append(("secondary_ip", self.op.secondary_ip))
4586 # this will trigger configuration file update, if needed
4587 self.cfg.Update(node, feedback_fn)
4589 # this will trigger job queue propagation or cleanup if the mc
4591 if [old_role, new_role].count(self._ROLE_CANDIDATE) == 1:
4592 self.context.ReaddNode(node)
4597 class LUNodePowercycle(NoHooksLU):
4598 """Powercycles a node.
4603 def CheckArguments(self):
4604 self.op.node_name = _ExpandNodeName(self.cfg, self.op.node_name)
4605 if self.op.node_name == self.cfg.GetMasterNode() and not self.op.force:
4606 raise errors.OpPrereqError("The node is the master and the force"
4607 " parameter was not set",
4610 def ExpandNames(self):
4611 """Locking for PowercycleNode.
4613 This is a last-resort option and shouldn't block on other
4614 jobs. Therefore, we grab no locks.
4617 self.needed_locks = {}
4619 def Exec(self, feedback_fn):
4623 result = self.rpc.call_node_powercycle(self.op.node_name,
4624 self.cfg.GetHypervisorType())
4625 result.Raise("Failed to schedule the reboot")
4626 return result.payload
4629 class LUClusterQuery(NoHooksLU):
4630 """Query cluster configuration.
4635 def ExpandNames(self):
4636 self.needed_locks = {}
4638 def Exec(self, feedback_fn):
4639 """Return cluster config.
4642 cluster = self.cfg.GetClusterInfo()
4645 # Filter just for enabled hypervisors
4646 for os_name, hv_dict in cluster.os_hvp.items():
4647 os_hvp[os_name] = {}
4648 for hv_name, hv_params in hv_dict.items():
4649 if hv_name in cluster.enabled_hypervisors:
4650 os_hvp[os_name][hv_name] = hv_params
4652 # Convert ip_family to ip_version
4653 primary_ip_version = constants.IP4_VERSION
4654 if cluster.primary_ip_family == netutils.IP6Address.family:
4655 primary_ip_version = constants.IP6_VERSION
4658 "software_version": constants.RELEASE_VERSION,
4659 "protocol_version": constants.PROTOCOL_VERSION,
4660 "config_version": constants.CONFIG_VERSION,
4661 "os_api_version": max(constants.OS_API_VERSIONS),
4662 "export_version": constants.EXPORT_VERSION,
4663 "architecture": (platform.architecture()[0], platform.machine()),
4664 "name": cluster.cluster_name,
4665 "master": cluster.master_node,
4666 "default_hypervisor": cluster.enabled_hypervisors[0],
4667 "enabled_hypervisors": cluster.enabled_hypervisors,
4668 "hvparams": dict([(hypervisor_name, cluster.hvparams[hypervisor_name])
4669 for hypervisor_name in cluster.enabled_hypervisors]),
4671 "beparams": cluster.beparams,
4672 "osparams": cluster.osparams,
4673 "nicparams": cluster.nicparams,
4674 "ndparams": cluster.ndparams,
4675 "candidate_pool_size": cluster.candidate_pool_size,
4676 "master_netdev": cluster.master_netdev,
4677 "volume_group_name": cluster.volume_group_name,
4678 "drbd_usermode_helper": cluster.drbd_usermode_helper,
4679 "file_storage_dir": cluster.file_storage_dir,
4680 "maintain_node_health": cluster.maintain_node_health,
4681 "ctime": cluster.ctime,
4682 "mtime": cluster.mtime,
4683 "uuid": cluster.uuid,
4684 "tags": list(cluster.GetTags()),
4685 "uid_pool": cluster.uid_pool,
4686 "default_iallocator": cluster.default_iallocator,
4687 "reserved_lvs": cluster.reserved_lvs,
4688 "primary_ip_version": primary_ip_version,
4689 "prealloc_wipe_disks": cluster.prealloc_wipe_disks,
4690 "hidden_os": cluster.hidden_os,
4691 "blacklisted_os": cluster.blacklisted_os,
4697 class LUClusterConfigQuery(NoHooksLU):
4698 """Return configuration values.
4702 _FIELDS_DYNAMIC = utils.FieldSet()
4703 _FIELDS_STATIC = utils.FieldSet("cluster_name", "master_node", "drain_flag",
4704 "watcher_pause", "volume_group_name")
4706 def CheckArguments(self):
4707 _CheckOutputFields(static=self._FIELDS_STATIC,
4708 dynamic=self._FIELDS_DYNAMIC,
4709 selected=self.op.output_fields)
4711 def ExpandNames(self):
4712 self.needed_locks = {}
4714 def Exec(self, feedback_fn):
4715 """Dump a representation of the cluster config to the standard output.
4719 for field in self.op.output_fields:
4720 if field == "cluster_name":
4721 entry = self.cfg.GetClusterName()
4722 elif field == "master_node":
4723 entry = self.cfg.GetMasterNode()
4724 elif field == "drain_flag":
4725 entry = os.path.exists(constants.JOB_QUEUE_DRAIN_FILE)
4726 elif field == "watcher_pause":
4727 entry = utils.ReadWatcherPauseFile(constants.WATCHER_PAUSEFILE)
4728 elif field == "volume_group_name":
4729 entry = self.cfg.GetVGName()
4731 raise errors.ParameterError(field)
4732 values.append(entry)
4736 class LUInstanceActivateDisks(NoHooksLU):
4737 """Bring up an instance's disks.
4742 def ExpandNames(self):
4743 self._ExpandAndLockInstance()
4744 self.needed_locks[locking.LEVEL_NODE] = []
4745 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
4747 def DeclareLocks(self, level):
4748 if level == locking.LEVEL_NODE:
4749 self._LockInstancesNodes()
4751 def CheckPrereq(self):
4752 """Check prerequisites.
4754 This checks that the instance is in the cluster.
4757 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
4758 assert self.instance is not None, \
4759 "Cannot retrieve locked instance %s" % self.op.instance_name
4760 _CheckNodeOnline(self, self.instance.primary_node)
4762 def Exec(self, feedback_fn):
4763 """Activate the disks.
4766 disks_ok, disks_info = \
4767 _AssembleInstanceDisks(self, self.instance,
4768 ignore_size=self.op.ignore_size)
4770 raise errors.OpExecError("Cannot activate block devices")
4775 def _AssembleInstanceDisks(lu, instance, disks=None, ignore_secondaries=False,
4777 """Prepare the block devices for an instance.
4779 This sets up the block devices on all nodes.
4781 @type lu: L{LogicalUnit}
4782 @param lu: the logical unit on whose behalf we execute
4783 @type instance: L{objects.Instance}
4784 @param instance: the instance for whose disks we assemble
4785 @type disks: list of L{objects.Disk} or None
4786 @param disks: which disks to assemble (or all, if None)
4787 @type ignore_secondaries: boolean
4788 @param ignore_secondaries: if true, errors on secondary nodes
4789 won't result in an error return from the function
4790 @type ignore_size: boolean
4791 @param ignore_size: if true, the current known size of the disk
4792 will not be used during the disk activation, useful for cases
4793 when the size is wrong
4794 @return: False if the operation failed, otherwise a list of
4795 (host, instance_visible_name, node_visible_name)
4796 with the mapping from node devices to instance devices
4801 iname = instance.name
4802 disks = _ExpandCheckDisks(instance, disks)
4804 # With the two passes mechanism we try to reduce the window of
4805 # opportunity for the race condition of switching DRBD to primary
4806 # before handshaking occured, but we do not eliminate it
4808 # The proper fix would be to wait (with some limits) until the
4809 # connection has been made and drbd transitions from WFConnection
4810 # into any other network-connected state (Connected, SyncTarget,
4813 # 1st pass, assemble on all nodes in secondary mode
4814 for idx, inst_disk in enumerate(disks):
4815 for node, node_disk in inst_disk.ComputeNodeTree(instance.primary_node):
4817 node_disk = node_disk.Copy()
4818 node_disk.UnsetSize()
4819 lu.cfg.SetDiskID(node_disk, node)
4820 result = lu.rpc.call_blockdev_assemble(node, node_disk, iname, False, idx)
4821 msg = result.fail_msg
4823 lu.proc.LogWarning("Could not prepare block device %s on node %s"
4824 " (is_primary=False, pass=1): %s",
4825 inst_disk.iv_name, node, msg)
4826 if not ignore_secondaries:
4829 # FIXME: race condition on drbd migration to primary
4831 # 2nd pass, do only the primary node
4832 for idx, inst_disk in enumerate(disks):
4835 for node, node_disk in inst_disk.ComputeNodeTree(instance.primary_node):
4836 if node != instance.primary_node:
4839 node_disk = node_disk.Copy()
4840 node_disk.UnsetSize()
4841 lu.cfg.SetDiskID(node_disk, node)
4842 result = lu.rpc.call_blockdev_assemble(node, node_disk, iname, True, idx)
4843 msg = result.fail_msg
4845 lu.proc.LogWarning("Could not prepare block device %s on node %s"
4846 " (is_primary=True, pass=2): %s",
4847 inst_disk.iv_name, node, msg)
4850 dev_path = result.payload
4852 device_info.append((instance.primary_node, inst_disk.iv_name, dev_path))
4854 # leave the disks configured for the primary node
4855 # this is a workaround that would be fixed better by
4856 # improving the logical/physical id handling
4858 lu.cfg.SetDiskID(disk, instance.primary_node)
4860 return disks_ok, device_info
4863 def _StartInstanceDisks(lu, instance, force):
4864 """Start the disks of an instance.
4867 disks_ok, _ = _AssembleInstanceDisks(lu, instance,
4868 ignore_secondaries=force)
4870 _ShutdownInstanceDisks(lu, instance)
4871 if force is not None and not force:
4872 lu.proc.LogWarning("", hint="If the message above refers to a"
4874 " you can retry the operation using '--force'.")
4875 raise errors.OpExecError("Disk consistency error")
4878 class LUInstanceDeactivateDisks(NoHooksLU):
4879 """Shutdown an instance's disks.
4884 def ExpandNames(self):
4885 self._ExpandAndLockInstance()
4886 self.needed_locks[locking.LEVEL_NODE] = []
4887 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
4889 def DeclareLocks(self, level):
4890 if level == locking.LEVEL_NODE:
4891 self._LockInstancesNodes()
4893 def CheckPrereq(self):
4894 """Check prerequisites.
4896 This checks that the instance is in the cluster.
4899 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
4900 assert self.instance is not None, \
4901 "Cannot retrieve locked instance %s" % self.op.instance_name
4903 def Exec(self, feedback_fn):
4904 """Deactivate the disks
4907 instance = self.instance
4909 _ShutdownInstanceDisks(self, instance)
4911 _SafeShutdownInstanceDisks(self, instance)
4914 def _SafeShutdownInstanceDisks(lu, instance, disks=None):
4915 """Shutdown block devices of an instance.
4917 This function checks if an instance is running, before calling
4918 _ShutdownInstanceDisks.
4921 _CheckInstanceDown(lu, instance, "cannot shutdown disks")
4922 _ShutdownInstanceDisks(lu, instance, disks=disks)
4925 def _ExpandCheckDisks(instance, disks):
4926 """Return the instance disks selected by the disks list
4928 @type disks: list of L{objects.Disk} or None
4929 @param disks: selected disks
4930 @rtype: list of L{objects.Disk}
4931 @return: selected instance disks to act on
4935 return instance.disks
4937 if not set(disks).issubset(instance.disks):
4938 raise errors.ProgrammerError("Can only act on disks belonging to the"
4943 def _ShutdownInstanceDisks(lu, instance, disks=None, ignore_primary=False):
4944 """Shutdown block devices of an instance.
4946 This does the shutdown on all nodes of the instance.
4948 If the ignore_primary is false, errors on the primary node are
4953 disks = _ExpandCheckDisks(instance, disks)
4956 for node, top_disk in disk.ComputeNodeTree(instance.primary_node):
4957 lu.cfg.SetDiskID(top_disk, node)
4958 result = lu.rpc.call_blockdev_shutdown(node, top_disk)
4959 msg = result.fail_msg
4961 lu.LogWarning("Could not shutdown block device %s on node %s: %s",
4962 disk.iv_name, node, msg)
4963 if ((node == instance.primary_node and not ignore_primary) or
4964 (node != instance.primary_node and not result.offline)):
4969 def _CheckNodeFreeMemory(lu, node, reason, requested, hypervisor_name):
4970 """Checks if a node has enough free memory.
4972 This function check if a given node has the needed amount of free
4973 memory. In case the node has less memory or we cannot get the
4974 information from the node, this function raise an OpPrereqError
4977 @type lu: C{LogicalUnit}
4978 @param lu: a logical unit from which we get configuration data
4980 @param node: the node to check
4981 @type reason: C{str}
4982 @param reason: string to use in the error message
4983 @type requested: C{int}
4984 @param requested: the amount of memory in MiB to check for
4985 @type hypervisor_name: C{str}
4986 @param hypervisor_name: the hypervisor to ask for memory stats
4987 @raise errors.OpPrereqError: if the node doesn't have enough memory, or
4988 we cannot check the node
4991 nodeinfo = lu.rpc.call_node_info([node], None, hypervisor_name)
4992 nodeinfo[node].Raise("Can't get data from node %s" % node,
4993 prereq=True, ecode=errors.ECODE_ENVIRON)
4994 free_mem = nodeinfo[node].payload.get('memory_free', None)
4995 if not isinstance(free_mem, int):
4996 raise errors.OpPrereqError("Can't compute free memory on node %s, result"
4997 " was '%s'" % (node, free_mem),
4998 errors.ECODE_ENVIRON)
4999 if requested > free_mem:
5000 raise errors.OpPrereqError("Not enough memory on node %s for %s:"
5001 " needed %s MiB, available %s MiB" %
5002 (node, reason, requested, free_mem),
5006 def _CheckNodesFreeDiskPerVG(lu, nodenames, req_sizes):
5007 """Checks if nodes have enough free disk space in the all VGs.
5009 This function check if all given nodes have the needed amount of
5010 free disk. In case any node has less disk or we cannot get the
5011 information from the node, this function raise an OpPrereqError
5014 @type lu: C{LogicalUnit}
5015 @param lu: a logical unit from which we get configuration data
5016 @type nodenames: C{list}
5017 @param nodenames: the list of node names to check
5018 @type req_sizes: C{dict}
5019 @param req_sizes: the hash of vg and corresponding amount of disk in
5021 @raise errors.OpPrereqError: if the node doesn't have enough disk,
5022 or we cannot check the node
5025 for vg, req_size in req_sizes.items():
5026 _CheckNodesFreeDiskOnVG(lu, nodenames, vg, req_size)
5029 def _CheckNodesFreeDiskOnVG(lu, nodenames, vg, requested):
5030 """Checks if nodes have enough free disk space in the specified VG.
5032 This function check if all given nodes have the needed amount of
5033 free disk. In case any node has less disk or we cannot get the
5034 information from the node, this function raise an OpPrereqError
5037 @type lu: C{LogicalUnit}
5038 @param lu: a logical unit from which we get configuration data
5039 @type nodenames: C{list}
5040 @param nodenames: the list of node names to check
5042 @param vg: the volume group to check
5043 @type requested: C{int}
5044 @param requested: the amount of disk in MiB to check for
5045 @raise errors.OpPrereqError: if the node doesn't have enough disk,
5046 or we cannot check the node
5049 nodeinfo = lu.rpc.call_node_info(nodenames, vg, None)
5050 for node in nodenames:
5051 info = nodeinfo[node]
5052 info.Raise("Cannot get current information from node %s" % node,
5053 prereq=True, ecode=errors.ECODE_ENVIRON)
5054 vg_free = info.payload.get("vg_free", None)
5055 if not isinstance(vg_free, int):
5056 raise errors.OpPrereqError("Can't compute free disk space on node"
5057 " %s for vg %s, result was '%s'" %
5058 (node, vg, vg_free), errors.ECODE_ENVIRON)
5059 if requested > vg_free:
5060 raise errors.OpPrereqError("Not enough disk space on target node %s"
5061 " vg %s: required %d MiB, available %d MiB" %
5062 (node, vg, requested, vg_free),
5066 class LUInstanceStartup(LogicalUnit):
5067 """Starts an instance.
5070 HPATH = "instance-start"
5071 HTYPE = constants.HTYPE_INSTANCE
5074 def CheckArguments(self):
5076 if self.op.beparams:
5077 # fill the beparams dict
5078 utils.ForceDictType(self.op.beparams, constants.BES_PARAMETER_TYPES)
5080 def ExpandNames(self):
5081 self._ExpandAndLockInstance()
5083 def BuildHooksEnv(self):
5086 This runs on master, primary and secondary nodes of the instance.
5090 "FORCE": self.op.force,
5092 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
5093 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
5096 def CheckPrereq(self):
5097 """Check prerequisites.
5099 This checks that the instance is in the cluster.
5102 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5103 assert self.instance is not None, \
5104 "Cannot retrieve locked instance %s" % self.op.instance_name
5107 if self.op.hvparams:
5108 # check hypervisor parameter syntax (locally)
5109 cluster = self.cfg.GetClusterInfo()
5110 utils.ForceDictType(self.op.hvparams, constants.HVS_PARAMETER_TYPES)
5111 filled_hvp = cluster.FillHV(instance)
5112 filled_hvp.update(self.op.hvparams)
5113 hv_type = hypervisor.GetHypervisor(instance.hypervisor)
5114 hv_type.CheckParameterSyntax(filled_hvp)
5115 _CheckHVParams(self, instance.all_nodes, instance.hypervisor, filled_hvp)
5117 self.primary_offline = self.cfg.GetNodeInfo(instance.primary_node).offline
5119 if self.primary_offline and self.op.ignore_offline_nodes:
5120 self.proc.LogWarning("Ignoring offline primary node")
5122 if self.op.hvparams or self.op.beparams:
5123 self.proc.LogWarning("Overridden parameters are ignored")
5125 _CheckNodeOnline(self, instance.primary_node)
5127 bep = self.cfg.GetClusterInfo().FillBE(instance)
5129 # check bridges existence
5130 _CheckInstanceBridgesExist(self, instance)
5132 remote_info = self.rpc.call_instance_info(instance.primary_node,
5134 instance.hypervisor)
5135 remote_info.Raise("Error checking node %s" % instance.primary_node,
5136 prereq=True, ecode=errors.ECODE_ENVIRON)
5137 if not remote_info.payload: # not running already
5138 _CheckNodeFreeMemory(self, instance.primary_node,
5139 "starting instance %s" % instance.name,
5140 bep[constants.BE_MEMORY], instance.hypervisor)
5142 def Exec(self, feedback_fn):
5143 """Start the instance.
5146 instance = self.instance
5147 force = self.op.force
5149 self.cfg.MarkInstanceUp(instance.name)
5151 if self.primary_offline:
5152 assert self.op.ignore_offline_nodes
5153 self.proc.LogInfo("Primary node offline, marked instance as started")
5155 node_current = instance.primary_node
5157 _StartInstanceDisks(self, instance, force)
5159 result = self.rpc.call_instance_start(node_current, instance,
5160 self.op.hvparams, self.op.beparams)
5161 msg = result.fail_msg
5163 _ShutdownInstanceDisks(self, instance)
5164 raise errors.OpExecError("Could not start instance: %s" % msg)
5167 class LUInstanceReboot(LogicalUnit):
5168 """Reboot an instance.
5171 HPATH = "instance-reboot"
5172 HTYPE = constants.HTYPE_INSTANCE
5175 def ExpandNames(self):
5176 self._ExpandAndLockInstance()
5178 def BuildHooksEnv(self):
5181 This runs on master, primary and secondary nodes of the instance.
5185 "IGNORE_SECONDARIES": self.op.ignore_secondaries,
5186 "REBOOT_TYPE": self.op.reboot_type,
5187 "SHUTDOWN_TIMEOUT": self.op.shutdown_timeout,
5189 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
5190 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
5193 def CheckPrereq(self):
5194 """Check prerequisites.
5196 This checks that the instance is in the cluster.
5199 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5200 assert self.instance is not None, \
5201 "Cannot retrieve locked instance %s" % self.op.instance_name
5203 _CheckNodeOnline(self, instance.primary_node)
5205 # check bridges existence
5206 _CheckInstanceBridgesExist(self, instance)
5208 def Exec(self, feedback_fn):
5209 """Reboot the instance.
5212 instance = self.instance
5213 ignore_secondaries = self.op.ignore_secondaries
5214 reboot_type = self.op.reboot_type
5216 node_current = instance.primary_node
5218 if reboot_type in [constants.INSTANCE_REBOOT_SOFT,
5219 constants.INSTANCE_REBOOT_HARD]:
5220 for disk in instance.disks:
5221 self.cfg.SetDiskID(disk, node_current)
5222 result = self.rpc.call_instance_reboot(node_current, instance,
5224 self.op.shutdown_timeout)
5225 result.Raise("Could not reboot instance")
5227 result = self.rpc.call_instance_shutdown(node_current, instance,
5228 self.op.shutdown_timeout)
5229 result.Raise("Could not shutdown instance for full reboot")
5230 _ShutdownInstanceDisks(self, instance)
5231 _StartInstanceDisks(self, instance, ignore_secondaries)
5232 result = self.rpc.call_instance_start(node_current, instance, None, None)
5233 msg = result.fail_msg
5235 _ShutdownInstanceDisks(self, instance)
5236 raise errors.OpExecError("Could not start instance for"
5237 " full reboot: %s" % msg)
5239 self.cfg.MarkInstanceUp(instance.name)
5242 class LUInstanceShutdown(LogicalUnit):
5243 """Shutdown an instance.
5246 HPATH = "instance-stop"
5247 HTYPE = constants.HTYPE_INSTANCE
5250 def ExpandNames(self):
5251 self._ExpandAndLockInstance()
5253 def BuildHooksEnv(self):
5256 This runs on master, primary and secondary nodes of the instance.
5259 env = _BuildInstanceHookEnvByObject(self, self.instance)
5260 env["TIMEOUT"] = self.op.timeout
5261 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
5264 def CheckPrereq(self):
5265 """Check prerequisites.
5267 This checks that the instance is in the cluster.
5270 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5271 assert self.instance is not None, \
5272 "Cannot retrieve locked instance %s" % self.op.instance_name
5274 self.primary_offline = \
5275 self.cfg.GetNodeInfo(self.instance.primary_node).offline
5277 if self.primary_offline and self.op.ignore_offline_nodes:
5278 self.proc.LogWarning("Ignoring offline primary node")
5280 _CheckNodeOnline(self, self.instance.primary_node)
5282 def Exec(self, feedback_fn):
5283 """Shutdown the instance.
5286 instance = self.instance
5287 node_current = instance.primary_node
5288 timeout = self.op.timeout
5290 self.cfg.MarkInstanceDown(instance.name)
5292 if self.primary_offline:
5293 assert self.op.ignore_offline_nodes
5294 self.proc.LogInfo("Primary node offline, marked instance as stopped")
5296 result = self.rpc.call_instance_shutdown(node_current, instance, timeout)
5297 msg = result.fail_msg
5299 self.proc.LogWarning("Could not shutdown instance: %s" % msg)
5301 _ShutdownInstanceDisks(self, instance)
5304 class LUInstanceReinstall(LogicalUnit):
5305 """Reinstall an instance.
5308 HPATH = "instance-reinstall"
5309 HTYPE = constants.HTYPE_INSTANCE
5312 def ExpandNames(self):
5313 self._ExpandAndLockInstance()
5315 def BuildHooksEnv(self):
5318 This runs on master, primary and secondary nodes of the instance.
5321 env = _BuildInstanceHookEnvByObject(self, self.instance)
5322 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
5325 def CheckPrereq(self):
5326 """Check prerequisites.
5328 This checks that the instance is in the cluster and is not running.
5331 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5332 assert instance is not None, \
5333 "Cannot retrieve locked instance %s" % self.op.instance_name
5334 _CheckNodeOnline(self, instance.primary_node, "Instance primary node"
5335 " offline, cannot reinstall")
5336 for node in instance.secondary_nodes:
5337 _CheckNodeOnline(self, node, "Instance secondary node offline,"
5338 " cannot reinstall")
5340 if instance.disk_template == constants.DT_DISKLESS:
5341 raise errors.OpPrereqError("Instance '%s' has no disks" %
5342 self.op.instance_name,
5344 _CheckInstanceDown(self, instance, "cannot reinstall")
5346 if self.op.os_type is not None:
5348 pnode = _ExpandNodeName(self.cfg, instance.primary_node)
5349 _CheckNodeHasOS(self, pnode, self.op.os_type, self.op.force_variant)
5350 instance_os = self.op.os_type
5352 instance_os = instance.os
5354 nodelist = list(instance.all_nodes)
5356 if self.op.osparams:
5357 i_osdict = _GetUpdatedParams(instance.osparams, self.op.osparams)
5358 _CheckOSParams(self, True, nodelist, instance_os, i_osdict)
5359 self.os_inst = i_osdict # the new dict (without defaults)
5363 self.instance = instance
5365 def Exec(self, feedback_fn):
5366 """Reinstall the instance.
5369 inst = self.instance
5371 if self.op.os_type is not None:
5372 feedback_fn("Changing OS to '%s'..." % self.op.os_type)
5373 inst.os = self.op.os_type
5374 # Write to configuration
5375 self.cfg.Update(inst, feedback_fn)
5377 _StartInstanceDisks(self, inst, None)
5379 feedback_fn("Running the instance OS create scripts...")
5380 # FIXME: pass debug option from opcode to backend
5381 result = self.rpc.call_instance_os_add(inst.primary_node, inst, True,
5382 self.op.debug_level,
5383 osparams=self.os_inst)
5384 result.Raise("Could not install OS for instance %s on node %s" %
5385 (inst.name, inst.primary_node))
5387 _ShutdownInstanceDisks(self, inst)
5390 class LUInstanceRecreateDisks(LogicalUnit):
5391 """Recreate an instance's missing disks.
5394 HPATH = "instance-recreate-disks"
5395 HTYPE = constants.HTYPE_INSTANCE
5398 def ExpandNames(self):
5399 self._ExpandAndLockInstance()
5401 def BuildHooksEnv(self):
5404 This runs on master, primary and secondary nodes of the instance.
5407 env = _BuildInstanceHookEnvByObject(self, self.instance)
5408 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
5411 def CheckPrereq(self):
5412 """Check prerequisites.
5414 This checks that the instance is in the cluster and is not running.
5417 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5418 assert instance is not None, \
5419 "Cannot retrieve locked instance %s" % self.op.instance_name
5420 _CheckNodeOnline(self, instance.primary_node)
5422 if instance.disk_template == constants.DT_DISKLESS:
5423 raise errors.OpPrereqError("Instance '%s' has no disks" %
5424 self.op.instance_name, errors.ECODE_INVAL)
5425 _CheckInstanceDown(self, instance, "cannot recreate disks")
5427 if not self.op.disks:
5428 self.op.disks = range(len(instance.disks))
5430 for idx in self.op.disks:
5431 if idx >= len(instance.disks):
5432 raise errors.OpPrereqError("Invalid disk index passed '%s'" % idx,
5435 self.instance = instance
5437 def Exec(self, feedback_fn):
5438 """Recreate the disks.
5442 for idx, _ in enumerate(self.instance.disks):
5443 if idx not in self.op.disks: # disk idx has not been passed in
5447 _CreateDisks(self, self.instance, to_skip=to_skip)
5450 class LUInstanceRename(LogicalUnit):
5451 """Rename an instance.
5454 HPATH = "instance-rename"
5455 HTYPE = constants.HTYPE_INSTANCE
5457 def CheckArguments(self):
5461 if self.op.ip_check and not self.op.name_check:
5462 # TODO: make the ip check more flexible and not depend on the name check
5463 raise errors.OpPrereqError("Cannot do ip check without a name check",
5466 def BuildHooksEnv(self):
5469 This runs on master, primary and secondary nodes of the instance.
5472 env = _BuildInstanceHookEnvByObject(self, self.instance)
5473 env["INSTANCE_NEW_NAME"] = self.op.new_name
5474 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
5477 def CheckPrereq(self):
5478 """Check prerequisites.
5480 This checks that the instance is in the cluster and is not running.
5483 self.op.instance_name = _ExpandInstanceName(self.cfg,
5484 self.op.instance_name)
5485 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5486 assert instance is not None
5487 _CheckNodeOnline(self, instance.primary_node)
5488 _CheckInstanceDown(self, instance, "cannot rename")
5489 self.instance = instance
5491 new_name = self.op.new_name
5492 if self.op.name_check:
5493 hostname = netutils.GetHostname(name=new_name)
5494 self.LogInfo("Resolved given name '%s' to '%s'", new_name,
5496 new_name = self.op.new_name = hostname.name
5497 if (self.op.ip_check and
5498 netutils.TcpPing(hostname.ip, constants.DEFAULT_NODED_PORT)):
5499 raise errors.OpPrereqError("IP %s of instance %s already in use" %
5500 (hostname.ip, new_name),
5501 errors.ECODE_NOTUNIQUE)
5503 instance_list = self.cfg.GetInstanceList()
5504 if new_name in instance_list and new_name != instance.name:
5505 raise errors.OpPrereqError("Instance '%s' is already in the cluster" %
5506 new_name, errors.ECODE_EXISTS)
5508 def Exec(self, feedback_fn):
5509 """Rename the instance.
5512 inst = self.instance
5513 old_name = inst.name
5515 rename_file_storage = False
5516 if (inst.disk_template == constants.DT_FILE and
5517 self.op.new_name != inst.name):
5518 old_file_storage_dir = os.path.dirname(inst.disks[0].logical_id[1])
5519 rename_file_storage = True
5521 self.cfg.RenameInstance(inst.name, self.op.new_name)
5522 # Change the instance lock. This is definitely safe while we hold the BGL
5523 self.context.glm.remove(locking.LEVEL_INSTANCE, old_name)
5524 self.context.glm.add(locking.LEVEL_INSTANCE, self.op.new_name)
5526 # re-read the instance from the configuration after rename
5527 inst = self.cfg.GetInstanceInfo(self.op.new_name)
5529 if rename_file_storage:
5530 new_file_storage_dir = os.path.dirname(inst.disks[0].logical_id[1])
5531 result = self.rpc.call_file_storage_dir_rename(inst.primary_node,
5532 old_file_storage_dir,
5533 new_file_storage_dir)
5534 result.Raise("Could not rename on node %s directory '%s' to '%s'"
5535 " (but the instance has been renamed in Ganeti)" %
5536 (inst.primary_node, old_file_storage_dir,
5537 new_file_storage_dir))
5539 _StartInstanceDisks(self, inst, None)
5541 result = self.rpc.call_instance_run_rename(inst.primary_node, inst,
5542 old_name, self.op.debug_level)
5543 msg = result.fail_msg
5545 msg = ("Could not run OS rename script for instance %s on node %s"
5546 " (but the instance has been renamed in Ganeti): %s" %
5547 (inst.name, inst.primary_node, msg))
5548 self.proc.LogWarning(msg)
5550 _ShutdownInstanceDisks(self, inst)
5555 class LUInstanceRemove(LogicalUnit):
5556 """Remove an instance.
5559 HPATH = "instance-remove"
5560 HTYPE = constants.HTYPE_INSTANCE
5563 def ExpandNames(self):
5564 self._ExpandAndLockInstance()
5565 self.needed_locks[locking.LEVEL_NODE] = []
5566 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5568 def DeclareLocks(self, level):
5569 if level == locking.LEVEL_NODE:
5570 self._LockInstancesNodes()
5572 def BuildHooksEnv(self):
5575 This runs on master, primary and secondary nodes of the instance.
5578 env = _BuildInstanceHookEnvByObject(self, self.instance)
5579 env["SHUTDOWN_TIMEOUT"] = self.op.shutdown_timeout
5580 nl = [self.cfg.GetMasterNode()]
5581 nl_post = list(self.instance.all_nodes) + nl
5582 return env, nl, nl_post
5584 def CheckPrereq(self):
5585 """Check prerequisites.
5587 This checks that the instance is in the cluster.
5590 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5591 assert self.instance is not None, \
5592 "Cannot retrieve locked instance %s" % self.op.instance_name
5594 def Exec(self, feedback_fn):
5595 """Remove the instance.
5598 instance = self.instance
5599 logging.info("Shutting down instance %s on node %s",
5600 instance.name, instance.primary_node)
5602 result = self.rpc.call_instance_shutdown(instance.primary_node, instance,
5603 self.op.shutdown_timeout)
5604 msg = result.fail_msg
5606 if self.op.ignore_failures:
5607 feedback_fn("Warning: can't shutdown instance: %s" % msg)
5609 raise errors.OpExecError("Could not shutdown instance %s on"
5611 (instance.name, instance.primary_node, msg))
5613 _RemoveInstance(self, feedback_fn, instance, self.op.ignore_failures)
5616 def _RemoveInstance(lu, feedback_fn, instance, ignore_failures):
5617 """Utility function to remove an instance.
5620 logging.info("Removing block devices for instance %s", instance.name)
5622 if not _RemoveDisks(lu, instance):
5623 if not ignore_failures:
5624 raise errors.OpExecError("Can't remove instance's disks")
5625 feedback_fn("Warning: can't remove instance's disks")
5627 logging.info("Removing instance %s out of cluster config", instance.name)
5629 lu.cfg.RemoveInstance(instance.name)
5631 assert not lu.remove_locks.get(locking.LEVEL_INSTANCE), \
5632 "Instance lock removal conflict"
5634 # Remove lock for the instance
5635 lu.remove_locks[locking.LEVEL_INSTANCE] = instance.name
5638 class LUInstanceQuery(NoHooksLU):
5639 """Logical unit for querying instances.
5642 # pylint: disable-msg=W0142
5645 def CheckArguments(self):
5646 self.iq = _InstanceQuery(self.op.names, self.op.output_fields,
5647 self.op.use_locking)
5649 def ExpandNames(self):
5650 self.iq.ExpandNames(self)
5652 def DeclareLocks(self, level):
5653 self.iq.DeclareLocks(self, level)
5655 def Exec(self, feedback_fn):
5656 return self.iq.OldStyleQuery(self)
5659 class LUInstanceFailover(LogicalUnit):
5660 """Failover an instance.
5663 HPATH = "instance-failover"
5664 HTYPE = constants.HTYPE_INSTANCE
5667 def ExpandNames(self):
5668 self._ExpandAndLockInstance()
5669 self.needed_locks[locking.LEVEL_NODE] = []
5670 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5672 def DeclareLocks(self, level):
5673 if level == locking.LEVEL_NODE:
5674 self._LockInstancesNodes()
5676 def BuildHooksEnv(self):
5679 This runs on master, primary and secondary nodes of the instance.
5682 instance = self.instance
5683 source_node = instance.primary_node
5684 target_node = instance.secondary_nodes[0]
5686 "IGNORE_CONSISTENCY": self.op.ignore_consistency,
5687 "SHUTDOWN_TIMEOUT": self.op.shutdown_timeout,
5688 "OLD_PRIMARY": source_node,
5689 "OLD_SECONDARY": target_node,
5690 "NEW_PRIMARY": target_node,
5691 "NEW_SECONDARY": source_node,
5693 env.update(_BuildInstanceHookEnvByObject(self, instance))
5694 nl = [self.cfg.GetMasterNode()] + list(instance.secondary_nodes)
5696 nl_post.append(source_node)
5697 return env, nl, nl_post
5699 def CheckPrereq(self):
5700 """Check prerequisites.
5702 This checks that the instance is in the cluster.
5705 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5706 assert self.instance is not None, \
5707 "Cannot retrieve locked instance %s" % self.op.instance_name
5709 bep = self.cfg.GetClusterInfo().FillBE(instance)
5710 if instance.disk_template not in constants.DTS_NET_MIRROR:
5711 raise errors.OpPrereqError("Instance's disk layout is not"
5712 " network mirrored, cannot failover.",
5715 secondary_nodes = instance.secondary_nodes
5716 if not secondary_nodes:
5717 raise errors.ProgrammerError("no secondary node but using "
5718 "a mirrored disk template")
5720 target_node = secondary_nodes[0]
5721 _CheckNodeOnline(self, target_node)
5722 _CheckNodeNotDrained(self, target_node)
5723 if instance.admin_up:
5724 # check memory requirements on the secondary node
5725 _CheckNodeFreeMemory(self, target_node, "failing over instance %s" %
5726 instance.name, bep[constants.BE_MEMORY],
5727 instance.hypervisor)
5729 self.LogInfo("Not checking memory on the secondary node as"
5730 " instance will not be started")
5732 # check bridge existance
5733 _CheckInstanceBridgesExist(self, instance, node=target_node)
5735 def Exec(self, feedback_fn):
5736 """Failover an instance.
5738 The failover is done by shutting it down on its present node and
5739 starting it on the secondary.
5742 instance = self.instance
5743 primary_node = self.cfg.GetNodeInfo(instance.primary_node)
5745 source_node = instance.primary_node
5746 target_node = instance.secondary_nodes[0]
5748 if instance.admin_up:
5749 feedback_fn("* checking disk consistency between source and target")
5750 for dev in instance.disks:
5751 # for drbd, these are drbd over lvm
5752 if not _CheckDiskConsistency(self, dev, target_node, False):
5753 if not self.op.ignore_consistency:
5754 raise errors.OpExecError("Disk %s is degraded on target node,"
5755 " aborting failover." % dev.iv_name)
5757 feedback_fn("* not checking disk consistency as instance is not running")
5759 feedback_fn("* shutting down instance on source node")
5760 logging.info("Shutting down instance %s on node %s",
5761 instance.name, source_node)
5763 result = self.rpc.call_instance_shutdown(source_node, instance,
5764 self.op.shutdown_timeout)
5765 msg = result.fail_msg
5767 if self.op.ignore_consistency or primary_node.offline:
5768 self.proc.LogWarning("Could not shutdown instance %s on node %s."
5769 " Proceeding anyway. Please make sure node"
5770 " %s is down. Error details: %s",
5771 instance.name, source_node, source_node, msg)
5773 raise errors.OpExecError("Could not shutdown instance %s on"
5775 (instance.name, source_node, msg))
5777 feedback_fn("* deactivating the instance's disks on source node")
5778 if not _ShutdownInstanceDisks(self, instance, ignore_primary=True):
5779 raise errors.OpExecError("Can't shut down the instance's disks.")
5781 instance.primary_node = target_node
5782 # distribute new instance config to the other nodes
5783 self.cfg.Update(instance, feedback_fn)
5785 # Only start the instance if it's marked as up
5786 if instance.admin_up:
5787 feedback_fn("* activating the instance's disks on target node")
5788 logging.info("Starting instance %s on node %s",
5789 instance.name, target_node)
5791 disks_ok, _ = _AssembleInstanceDisks(self, instance,
5792 ignore_secondaries=True)
5794 _ShutdownInstanceDisks(self, instance)
5795 raise errors.OpExecError("Can't activate the instance's disks")
5797 feedback_fn("* starting the instance on the target node")
5798 result = self.rpc.call_instance_start(target_node, instance, None, None)
5799 msg = result.fail_msg
5801 _ShutdownInstanceDisks(self, instance)
5802 raise errors.OpExecError("Could not start instance %s on node %s: %s" %
5803 (instance.name, target_node, msg))
5806 class LUInstanceMigrate(LogicalUnit):
5807 """Migrate an instance.
5809 This is migration without shutting down, compared to the failover,
5810 which is done with shutdown.
5813 HPATH = "instance-migrate"
5814 HTYPE = constants.HTYPE_INSTANCE
5817 def ExpandNames(self):
5818 self._ExpandAndLockInstance()
5820 self.needed_locks[locking.LEVEL_NODE] = []
5821 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5823 self._migrater = TLMigrateInstance(self, self.op.instance_name,
5825 self.tasklets = [self._migrater]
5827 def DeclareLocks(self, level):
5828 if level == locking.LEVEL_NODE:
5829 self._LockInstancesNodes()
5831 def BuildHooksEnv(self):
5834 This runs on master, primary and secondary nodes of the instance.
5837 instance = self._migrater.instance
5838 source_node = instance.primary_node
5839 target_node = instance.secondary_nodes[0]
5840 env = _BuildInstanceHookEnvByObject(self, instance)
5841 env["MIGRATE_LIVE"] = self._migrater.live
5842 env["MIGRATE_CLEANUP"] = self.op.cleanup
5844 "OLD_PRIMARY": source_node,
5845 "OLD_SECONDARY": target_node,
5846 "NEW_PRIMARY": target_node,
5847 "NEW_SECONDARY": source_node,
5849 nl = [self.cfg.GetMasterNode()] + list(instance.secondary_nodes)
5851 nl_post.append(source_node)
5852 return env, nl, nl_post
5855 class LUInstanceMove(LogicalUnit):
5856 """Move an instance by data-copying.
5859 HPATH = "instance-move"
5860 HTYPE = constants.HTYPE_INSTANCE
5863 def ExpandNames(self):
5864 self._ExpandAndLockInstance()
5865 target_node = _ExpandNodeName(self.cfg, self.op.target_node)
5866 self.op.target_node = target_node
5867 self.needed_locks[locking.LEVEL_NODE] = [target_node]
5868 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_APPEND
5870 def DeclareLocks(self, level):
5871 if level == locking.LEVEL_NODE:
5872 self._LockInstancesNodes(primary_only=True)
5874 def BuildHooksEnv(self):
5877 This runs on master, primary and secondary nodes of the instance.
5881 "TARGET_NODE": self.op.target_node,
5882 "SHUTDOWN_TIMEOUT": self.op.shutdown_timeout,
5884 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
5885 nl = [self.cfg.GetMasterNode()] + [self.instance.primary_node,
5886 self.op.target_node]
5889 def CheckPrereq(self):
5890 """Check prerequisites.
5892 This checks that the instance is in the cluster.
5895 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5896 assert self.instance is not None, \
5897 "Cannot retrieve locked instance %s" % self.op.instance_name
5899 node = self.cfg.GetNodeInfo(self.op.target_node)
5900 assert node is not None, \
5901 "Cannot retrieve locked node %s" % self.op.target_node
5903 self.target_node = target_node = node.name
5905 if target_node == instance.primary_node:
5906 raise errors.OpPrereqError("Instance %s is already on the node %s" %
5907 (instance.name, target_node),
5910 bep = self.cfg.GetClusterInfo().FillBE(instance)
5912 for idx, dsk in enumerate(instance.disks):
5913 if dsk.dev_type not in (constants.LD_LV, constants.LD_FILE):
5914 raise errors.OpPrereqError("Instance disk %d has a complex layout,"
5915 " cannot copy" % idx, errors.ECODE_STATE)
5917 _CheckNodeOnline(self, target_node)
5918 _CheckNodeNotDrained(self, target_node)
5919 _CheckNodeVmCapable(self, target_node)
5921 if instance.admin_up:
5922 # check memory requirements on the secondary node
5923 _CheckNodeFreeMemory(self, target_node, "failing over instance %s" %
5924 instance.name, bep[constants.BE_MEMORY],
5925 instance.hypervisor)
5927 self.LogInfo("Not checking memory on the secondary node as"
5928 " instance will not be started")
5930 # check bridge existance
5931 _CheckInstanceBridgesExist(self, instance, node=target_node)
5933 def Exec(self, feedback_fn):
5934 """Move an instance.
5936 The move is done by shutting it down on its present node, copying
5937 the data over (slow) and starting it on the new node.
5940 instance = self.instance
5942 source_node = instance.primary_node
5943 target_node = self.target_node
5945 self.LogInfo("Shutting down instance %s on source node %s",
5946 instance.name, source_node)
5948 result = self.rpc.call_instance_shutdown(source_node, instance,
5949 self.op.shutdown_timeout)
5950 msg = result.fail_msg
5952 if self.op.ignore_consistency:
5953 self.proc.LogWarning("Could not shutdown instance %s on node %s."
5954 " Proceeding anyway. Please make sure node"
5955 " %s is down. Error details: %s",
5956 instance.name, source_node, source_node, msg)
5958 raise errors.OpExecError("Could not shutdown instance %s on"
5960 (instance.name, source_node, msg))
5962 # create the target disks
5964 _CreateDisks(self, instance, target_node=target_node)
5965 except errors.OpExecError:
5966 self.LogWarning("Device creation failed, reverting...")
5968 _RemoveDisks(self, instance, target_node=target_node)
5970 self.cfg.ReleaseDRBDMinors(instance.name)
5973 cluster_name = self.cfg.GetClusterInfo().cluster_name
5976 # activate, get path, copy the data over
5977 for idx, disk in enumerate(instance.disks):
5978 self.LogInfo("Copying data for disk %d", idx)
5979 result = self.rpc.call_blockdev_assemble(target_node, disk,
5980 instance.name, True, idx)
5982 self.LogWarning("Can't assemble newly created disk %d: %s",
5983 idx, result.fail_msg)
5984 errs.append(result.fail_msg)
5986 dev_path = result.payload
5987 result = self.rpc.call_blockdev_export(source_node, disk,
5988 target_node, dev_path,
5991 self.LogWarning("Can't copy data over for disk %d: %s",
5992 idx, result.fail_msg)
5993 errs.append(result.fail_msg)
5997 self.LogWarning("Some disks failed to copy, aborting")
5999 _RemoveDisks(self, instance, target_node=target_node)
6001 self.cfg.ReleaseDRBDMinors(instance.name)
6002 raise errors.OpExecError("Errors during disk copy: %s" %
6005 instance.primary_node = target_node
6006 self.cfg.Update(instance, feedback_fn)
6008 self.LogInfo("Removing the disks on the original node")
6009 _RemoveDisks(self, instance, target_node=source_node)
6011 # Only start the instance if it's marked as up
6012 if instance.admin_up:
6013 self.LogInfo("Starting instance %s on node %s",
6014 instance.name, target_node)
6016 disks_ok, _ = _AssembleInstanceDisks(self, instance,
6017 ignore_secondaries=True)
6019 _ShutdownInstanceDisks(self, instance)
6020 raise errors.OpExecError("Can't activate the instance's disks")
6022 result = self.rpc.call_instance_start(target_node, instance, None, None)
6023 msg = result.fail_msg
6025 _ShutdownInstanceDisks(self, instance)
6026 raise errors.OpExecError("Could not start instance %s on node %s: %s" %
6027 (instance.name, target_node, msg))
6030 class LUNodeMigrate(LogicalUnit):
6031 """Migrate all instances from a node.
6034 HPATH = "node-migrate"
6035 HTYPE = constants.HTYPE_NODE
6038 def ExpandNames(self):
6039 self.op.node_name = _ExpandNodeName(self.cfg, self.op.node_name)
6041 self.needed_locks = {
6042 locking.LEVEL_NODE: [self.op.node_name],
6045 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_APPEND
6047 # Create tasklets for migrating instances for all instances on this node
6051 for inst in _GetNodePrimaryInstances(self.cfg, self.op.node_name):
6052 logging.debug("Migrating instance %s", inst.name)
6053 names.append(inst.name)
6055 tasklets.append(TLMigrateInstance(self, inst.name, False))
6057 self.tasklets = tasklets
6059 # Declare instance locks
6060 self.needed_locks[locking.LEVEL_INSTANCE] = names
6062 def DeclareLocks(self, level):
6063 if level == locking.LEVEL_NODE:
6064 self._LockInstancesNodes()
6066 def BuildHooksEnv(self):
6069 This runs on the master, the primary and all the secondaries.
6073 "NODE_NAME": self.op.node_name,
6076 nl = [self.cfg.GetMasterNode()]
6078 return (env, nl, nl)
6081 class TLMigrateInstance(Tasklet):
6082 """Tasklet class for instance migration.
6085 @ivar live: whether the migration will be done live or non-live;
6086 this variable is initalized only after CheckPrereq has run
6089 def __init__(self, lu, instance_name, cleanup):
6090 """Initializes this class.
6093 Tasklet.__init__(self, lu)
6096 self.instance_name = instance_name
6097 self.cleanup = cleanup
6098 self.live = False # will be overridden later
6100 def CheckPrereq(self):
6101 """Check prerequisites.
6103 This checks that the instance is in the cluster.
6106 instance_name = _ExpandInstanceName(self.lu.cfg, self.instance_name)
6107 instance = self.cfg.GetInstanceInfo(instance_name)
6108 assert instance is not None
6110 if instance.disk_template != constants.DT_DRBD8:
6111 raise errors.OpPrereqError("Instance's disk layout is not"
6112 " drbd8, cannot migrate.", errors.ECODE_STATE)
6114 secondary_nodes = instance.secondary_nodes
6115 if not secondary_nodes:
6116 raise errors.ConfigurationError("No secondary node but using"
6117 " drbd8 disk template")
6119 i_be = self.cfg.GetClusterInfo().FillBE(instance)
6121 target_node = secondary_nodes[0]
6122 # check memory requirements on the secondary node
6123 _CheckNodeFreeMemory(self.lu, target_node, "migrating instance %s" %
6124 instance.name, i_be[constants.BE_MEMORY],
6125 instance.hypervisor)
6127 # check bridge existance
6128 _CheckInstanceBridgesExist(self.lu, instance, node=target_node)
6130 if not self.cleanup:
6131 _CheckNodeNotDrained(self.lu, target_node)
6132 result = self.rpc.call_instance_migratable(instance.primary_node,
6134 result.Raise("Can't migrate, please use failover",
6135 prereq=True, ecode=errors.ECODE_STATE)
6137 self.instance = instance
6139 if self.lu.op.live is not None and self.lu.op.mode is not None:
6140 raise errors.OpPrereqError("Only one of the 'live' and 'mode'"
6141 " parameters are accepted",
6143 if self.lu.op.live is not None:
6145 self.lu.op.mode = constants.HT_MIGRATION_LIVE
6147 self.lu.op.mode = constants.HT_MIGRATION_NONLIVE
6148 # reset the 'live' parameter to None so that repeated
6149 # invocations of CheckPrereq do not raise an exception
6150 self.lu.op.live = None
6151 elif self.lu.op.mode is None:
6152 # read the default value from the hypervisor
6153 i_hv = self.cfg.GetClusterInfo().FillHV(instance, skip_globals=False)
6154 self.lu.op.mode = i_hv[constants.HV_MIGRATION_MODE]
6156 self.live = self.lu.op.mode == constants.HT_MIGRATION_LIVE
6158 def _WaitUntilSync(self):
6159 """Poll with custom rpc for disk sync.
6161 This uses our own step-based rpc call.
6164 self.feedback_fn("* wait until resync is done")
6168 result = self.rpc.call_drbd_wait_sync(self.all_nodes,
6170 self.instance.disks)
6172 for node, nres in result.items():
6173 nres.Raise("Cannot resync disks on node %s" % node)
6174 node_done, node_percent = nres.payload
6175 all_done = all_done and node_done
6176 if node_percent is not None:
6177 min_percent = min(min_percent, node_percent)
6179 if min_percent < 100:
6180 self.feedback_fn(" - progress: %.1f%%" % min_percent)
6183 def _EnsureSecondary(self, node):
6184 """Demote a node to secondary.
6187 self.feedback_fn("* switching node %s to secondary mode" % node)
6189 for dev in self.instance.disks:
6190 self.cfg.SetDiskID(dev, node)
6192 result = self.rpc.call_blockdev_close(node, self.instance.name,
6193 self.instance.disks)
6194 result.Raise("Cannot change disk to secondary on node %s" % node)
6196 def _GoStandalone(self):
6197 """Disconnect from the network.
6200 self.feedback_fn("* changing into standalone mode")
6201 result = self.rpc.call_drbd_disconnect_net(self.all_nodes, self.nodes_ip,
6202 self.instance.disks)
6203 for node, nres in result.items():
6204 nres.Raise("Cannot disconnect disks node %s" % node)
6206 def _GoReconnect(self, multimaster):
6207 """Reconnect to the network.
6213 msg = "single-master"
6214 self.feedback_fn("* changing disks into %s mode" % msg)
6215 result = self.rpc.call_drbd_attach_net(self.all_nodes, self.nodes_ip,
6216 self.instance.disks,
6217 self.instance.name, multimaster)
6218 for node, nres in result.items():
6219 nres.Raise("Cannot change disks config on node %s" % node)
6221 def _ExecCleanup(self):
6222 """Try to cleanup after a failed migration.
6224 The cleanup is done by:
6225 - check that the instance is running only on one node
6226 (and update the config if needed)
6227 - change disks on its secondary node to secondary
6228 - wait until disks are fully synchronized
6229 - disconnect from the network
6230 - change disks into single-master mode
6231 - wait again until disks are fully synchronized
6234 instance = self.instance
6235 target_node = self.target_node
6236 source_node = self.source_node
6238 # check running on only one node
6239 self.feedback_fn("* checking where the instance actually runs"
6240 " (if this hangs, the hypervisor might be in"
6242 ins_l = self.rpc.call_instance_list(self.all_nodes, [instance.hypervisor])
6243 for node, result in ins_l.items():
6244 result.Raise("Can't contact node %s" % node)
6246 runningon_source = instance.name in ins_l[source_node].payload
6247 runningon_target = instance.name in ins_l[target_node].payload
6249 if runningon_source and runningon_target:
6250 raise errors.OpExecError("Instance seems to be running on two nodes,"
6251 " or the hypervisor is confused. You will have"
6252 " to ensure manually that it runs only on one"
6253 " and restart this operation.")
6255 if not (runningon_source or runningon_target):
6256 raise errors.OpExecError("Instance does not seem to be running at all."
6257 " In this case, it's safer to repair by"
6258 " running 'gnt-instance stop' to ensure disk"
6259 " shutdown, and then restarting it.")
6261 if runningon_target:
6262 # the migration has actually succeeded, we need to update the config
6263 self.feedback_fn("* instance running on secondary node (%s),"
6264 " updating config" % target_node)
6265 instance.primary_node = target_node
6266 self.cfg.Update(instance, self.feedback_fn)
6267 demoted_node = source_node
6269 self.feedback_fn("* instance confirmed to be running on its"
6270 " primary node (%s)" % source_node)
6271 demoted_node = target_node
6273 self._EnsureSecondary(demoted_node)
6275 self._WaitUntilSync()
6276 except errors.OpExecError:
6277 # we ignore here errors, since if the device is standalone, it
6278 # won't be able to sync
6280 self._GoStandalone()
6281 self._GoReconnect(False)
6282 self._WaitUntilSync()
6284 self.feedback_fn("* done")
6286 def _RevertDiskStatus(self):
6287 """Try to revert the disk status after a failed migration.
6290 target_node = self.target_node
6292 self._EnsureSecondary(target_node)
6293 self._GoStandalone()
6294 self._GoReconnect(False)
6295 self._WaitUntilSync()
6296 except errors.OpExecError, err:
6297 self.lu.LogWarning("Migration failed and I can't reconnect the"
6298 " drives: error '%s'\n"
6299 "Please look and recover the instance status" %
6302 def _AbortMigration(self):
6303 """Call the hypervisor code to abort a started migration.
6306 instance = self.instance
6307 target_node = self.target_node
6308 migration_info = self.migration_info
6310 abort_result = self.rpc.call_finalize_migration(target_node,
6314 abort_msg = abort_result.fail_msg
6316 logging.error("Aborting migration failed on target node %s: %s",
6317 target_node, abort_msg)
6318 # Don't raise an exception here, as we stil have to try to revert the
6319 # disk status, even if this step failed.
6321 def _ExecMigration(self):
6322 """Migrate an instance.
6324 The migrate is done by:
6325 - change the disks into dual-master mode
6326 - wait until disks are fully synchronized again
6327 - migrate the instance
6328 - change disks on the new secondary node (the old primary) to secondary
6329 - wait until disks are fully synchronized
6330 - change disks into single-master mode
6333 instance = self.instance
6334 target_node = self.target_node
6335 source_node = self.source_node
6337 self.feedback_fn("* checking disk consistency between source and target")
6338 for dev in instance.disks:
6339 if not _CheckDiskConsistency(self.lu, dev, target_node, False):
6340 raise errors.OpExecError("Disk %s is degraded or not fully"
6341 " synchronized on target node,"
6342 " aborting migrate." % dev.iv_name)
6344 # First get the migration information from the remote node
6345 result = self.rpc.call_migration_info(source_node, instance)
6346 msg = result.fail_msg
6348 log_err = ("Failed fetching source migration information from %s: %s" %
6350 logging.error(log_err)
6351 raise errors.OpExecError(log_err)
6353 self.migration_info = migration_info = result.payload
6355 # Then switch the disks to master/master mode
6356 self._EnsureSecondary(target_node)
6357 self._GoStandalone()
6358 self._GoReconnect(True)
6359 self._WaitUntilSync()
6361 self.feedback_fn("* preparing %s to accept the instance" % target_node)
6362 result = self.rpc.call_accept_instance(target_node,
6365 self.nodes_ip[target_node])
6367 msg = result.fail_msg
6369 logging.error("Instance pre-migration failed, trying to revert"
6370 " disk status: %s", msg)
6371 self.feedback_fn("Pre-migration failed, aborting")
6372 self._AbortMigration()
6373 self._RevertDiskStatus()
6374 raise errors.OpExecError("Could not pre-migrate instance %s: %s" %
6375 (instance.name, msg))
6377 self.feedback_fn("* migrating instance to %s" % target_node)
6379 result = self.rpc.call_instance_migrate(source_node, instance,
6380 self.nodes_ip[target_node],
6382 msg = result.fail_msg
6384 logging.error("Instance migration failed, trying to revert"
6385 " disk status: %s", msg)
6386 self.feedback_fn("Migration failed, aborting")
6387 self._AbortMigration()
6388 self._RevertDiskStatus()
6389 raise errors.OpExecError("Could not migrate instance %s: %s" %
6390 (instance.name, msg))
6393 instance.primary_node = target_node
6394 # distribute new instance config to the other nodes
6395 self.cfg.Update(instance, self.feedback_fn)
6397 result = self.rpc.call_finalize_migration(target_node,
6401 msg = result.fail_msg
6403 logging.error("Instance migration succeeded, but finalization failed:"
6405 raise errors.OpExecError("Could not finalize instance migration: %s" %
6408 self._EnsureSecondary(source_node)
6409 self._WaitUntilSync()
6410 self._GoStandalone()
6411 self._GoReconnect(False)
6412 self._WaitUntilSync()
6414 self.feedback_fn("* done")
6416 def Exec(self, feedback_fn):
6417 """Perform the migration.
6420 feedback_fn("Migrating instance %s" % self.instance.name)
6422 self.feedback_fn = feedback_fn
6424 self.source_node = self.instance.primary_node
6425 self.target_node = self.instance.secondary_nodes[0]
6426 self.all_nodes = [self.source_node, self.target_node]
6428 self.source_node: self.cfg.GetNodeInfo(self.source_node).secondary_ip,
6429 self.target_node: self.cfg.GetNodeInfo(self.target_node).secondary_ip,
6433 return self._ExecCleanup()
6435 return self._ExecMigration()
6438 def _CreateBlockDev(lu, node, instance, device, force_create,
6440 """Create a tree of block devices on a given node.
6442 If this device type has to be created on secondaries, create it and
6445 If not, just recurse to children keeping the same 'force' value.
6447 @param lu: the lu on whose behalf we execute
6448 @param node: the node on which to create the device
6449 @type instance: L{objects.Instance}
6450 @param instance: the instance which owns the device
6451 @type device: L{objects.Disk}
6452 @param device: the device to create
6453 @type force_create: boolean
6454 @param force_create: whether to force creation of this device; this
6455 will be change to True whenever we find a device which has
6456 CreateOnSecondary() attribute
6457 @param info: the extra 'metadata' we should attach to the device
6458 (this will be represented as a LVM tag)
6459 @type force_open: boolean
6460 @param force_open: this parameter will be passes to the
6461 L{backend.BlockdevCreate} function where it specifies
6462 whether we run on primary or not, and it affects both
6463 the child assembly and the device own Open() execution
6466 if device.CreateOnSecondary():
6470 for child in device.children:
6471 _CreateBlockDev(lu, node, instance, child, force_create,
6474 if not force_create:
6477 _CreateSingleBlockDev(lu, node, instance, device, info, force_open)
6480 def _CreateSingleBlockDev(lu, node, instance, device, info, force_open):
6481 """Create a single block device on a given node.
6483 This will not recurse over children of the device, so they must be
6486 @param lu: the lu on whose behalf we execute
6487 @param node: the node on which to create the device
6488 @type instance: L{objects.Instance}
6489 @param instance: the instance which owns the device
6490 @type device: L{objects.Disk}
6491 @param device: the device to create
6492 @param info: the extra 'metadata' we should attach to the device
6493 (this will be represented as a LVM tag)
6494 @type force_open: boolean
6495 @param force_open: this parameter will be passes to the
6496 L{backend.BlockdevCreate} function where it specifies
6497 whether we run on primary or not, and it affects both
6498 the child assembly and the device own Open() execution
6501 lu.cfg.SetDiskID(device, node)
6502 result = lu.rpc.call_blockdev_create(node, device, device.size,
6503 instance.name, force_open, info)
6504 result.Raise("Can't create block device %s on"
6505 " node %s for instance %s" % (device, node, instance.name))
6506 if device.physical_id is None:
6507 device.physical_id = result.payload
6510 def _GenerateUniqueNames(lu, exts):
6511 """Generate a suitable LV name.
6513 This will generate a logical volume name for the given instance.
6518 new_id = lu.cfg.GenerateUniqueID(lu.proc.GetECId())
6519 results.append("%s%s" % (new_id, val))
6523 def _GenerateDRBD8Branch(lu, primary, secondary, size, vgname, names, iv_name,
6525 """Generate a drbd8 device complete with its children.
6528 port = lu.cfg.AllocatePort()
6529 shared_secret = lu.cfg.GenerateDRBDSecret(lu.proc.GetECId())
6530 dev_data = objects.Disk(dev_type=constants.LD_LV, size=size,
6531 logical_id=(vgname, names[0]))
6532 dev_meta = objects.Disk(dev_type=constants.LD_LV, size=128,
6533 logical_id=(vgname, names[1]))
6534 drbd_dev = objects.Disk(dev_type=constants.LD_DRBD8, size=size,
6535 logical_id=(primary, secondary, port,
6538 children=[dev_data, dev_meta],
6543 def _GenerateDiskTemplate(lu, template_name,
6544 instance_name, primary_node,
6545 secondary_nodes, disk_info,
6546 file_storage_dir, file_driver,
6547 base_index, feedback_fn):
6548 """Generate the entire disk layout for a given template type.
6551 #TODO: compute space requirements
6553 vgname = lu.cfg.GetVGName()
6554 disk_count = len(disk_info)
6556 if template_name == constants.DT_DISKLESS:
6558 elif template_name == constants.DT_PLAIN:
6559 if len(secondary_nodes) != 0:
6560 raise errors.ProgrammerError("Wrong template configuration")
6562 names = _GenerateUniqueNames(lu, [".disk%d" % (base_index + i)
6563 for i in range(disk_count)])
6564 for idx, disk in enumerate(disk_info):
6565 disk_index = idx + base_index
6566 vg = disk.get("vg", vgname)
6567 feedback_fn("* disk %i, vg %s, name %s" % (idx, vg, names[idx]))
6568 disk_dev = objects.Disk(dev_type=constants.LD_LV, size=disk["size"],
6569 logical_id=(vg, names[idx]),
6570 iv_name="disk/%d" % disk_index,
6572 disks.append(disk_dev)
6573 elif template_name == constants.DT_DRBD8:
6574 if len(secondary_nodes) != 1:
6575 raise errors.ProgrammerError("Wrong template configuration")
6576 remote_node = secondary_nodes[0]
6577 minors = lu.cfg.AllocateDRBDMinor(
6578 [primary_node, remote_node] * len(disk_info), instance_name)
6581 for lv_prefix in _GenerateUniqueNames(lu, [".disk%d" % (base_index + i)
6582 for i in range(disk_count)]):
6583 names.append(lv_prefix + "_data")
6584 names.append(lv_prefix + "_meta")
6585 for idx, disk in enumerate(disk_info):
6586 disk_index = idx + base_index
6587 vg = disk.get("vg", vgname)
6588 disk_dev = _GenerateDRBD8Branch(lu, primary_node, remote_node,
6589 disk["size"], vg, names[idx*2:idx*2+2],
6590 "disk/%d" % disk_index,
6591 minors[idx*2], minors[idx*2+1])
6592 disk_dev.mode = disk["mode"]
6593 disks.append(disk_dev)
6594 elif template_name == constants.DT_FILE:
6595 if len(secondary_nodes) != 0:
6596 raise errors.ProgrammerError("Wrong template configuration")
6598 opcodes.RequireFileStorage()
6600 for idx, disk in enumerate(disk_info):
6601 disk_index = idx + base_index
6602 disk_dev = objects.Disk(dev_type=constants.LD_FILE, size=disk["size"],
6603 iv_name="disk/%d" % disk_index,
6604 logical_id=(file_driver,
6605 "%s/disk%d" % (file_storage_dir,
6608 disks.append(disk_dev)
6610 raise errors.ProgrammerError("Invalid disk template '%s'" % template_name)
6614 def _GetInstanceInfoText(instance):
6615 """Compute that text that should be added to the disk's metadata.
6618 return "originstname+%s" % instance.name
6621 def _CalcEta(time_taken, written, total_size):
6622 """Calculates the ETA based on size written and total size.
6624 @param time_taken: The time taken so far
6625 @param written: amount written so far
6626 @param total_size: The total size of data to be written
6627 @return: The remaining time in seconds
6630 avg_time = time_taken / float(written)
6631 return (total_size - written) * avg_time
6634 def _WipeDisks(lu, instance):
6635 """Wipes instance disks.
6637 @type lu: L{LogicalUnit}
6638 @param lu: the logical unit on whose behalf we execute
6639 @type instance: L{objects.Instance}
6640 @param instance: the instance whose disks we should create
6641 @return: the success of the wipe
6644 node = instance.primary_node
6646 for device in instance.disks:
6647 lu.cfg.SetDiskID(device, node)
6649 logging.info("Pause sync of instance %s disks", instance.name)
6650 result = lu.rpc.call_blockdev_pause_resume_sync(node, instance.disks, True)
6652 for idx, success in enumerate(result.payload):
6654 logging.warn("pause-sync of instance %s for disks %d failed",
6658 for idx, device in enumerate(instance.disks):
6659 # The wipe size is MIN_WIPE_CHUNK_PERCENT % of the instance disk but
6660 # MAX_WIPE_CHUNK at max
6661 wipe_chunk_size = min(constants.MAX_WIPE_CHUNK, device.size / 100.0 *
6662 constants.MIN_WIPE_CHUNK_PERCENT)
6663 # we _must_ make this an int, otherwise rounding errors will
6665 wipe_chunk_size = int(wipe_chunk_size)
6667 lu.LogInfo("* Wiping disk %d", idx)
6668 logging.info("Wiping disk %d for instance %s, node %s using"
6669 " chunk size %s", idx, instance.name, node, wipe_chunk_size)
6674 start_time = time.time()
6676 while offset < size:
6677 wipe_size = min(wipe_chunk_size, size - offset)
6678 logging.debug("Wiping disk %d, offset %s, chunk %s",
6679 idx, offset, wipe_size)
6680 result = lu.rpc.call_blockdev_wipe(node, device, offset, wipe_size)
6681 result.Raise("Could not wipe disk %d at offset %d for size %d" %
6682 (idx, offset, wipe_size))
6685 if now - last_output >= 60:
6686 eta = _CalcEta(now - start_time, offset, size)
6687 lu.LogInfo(" - done: %.1f%% ETA: %s" %
6688 (offset / float(size) * 100, utils.FormatSeconds(eta)))
6691 logging.info("Resume sync of instance %s disks", instance.name)
6693 result = lu.rpc.call_blockdev_pause_resume_sync(node, instance.disks, False)
6695 for idx, success in enumerate(result.payload):
6697 lu.LogWarning("Warning: Resume sync of disk %d failed. Please have a"
6698 " look at the status and troubleshoot the issue.", idx)
6699 logging.warn("resume-sync of instance %s for disks %d failed",
6703 def _CreateDisks(lu, instance, to_skip=None, target_node=None):
6704 """Create all disks for an instance.
6706 This abstracts away some work from AddInstance.
6708 @type lu: L{LogicalUnit}
6709 @param lu: the logical unit on whose behalf we execute
6710 @type instance: L{objects.Instance}
6711 @param instance: the instance whose disks we should create
6713 @param to_skip: list of indices to skip
6714 @type target_node: string
6715 @param target_node: if passed, overrides the target node for creation
6717 @return: the success of the creation
6720 info = _GetInstanceInfoText(instance)
6721 if target_node is None:
6722 pnode = instance.primary_node
6723 all_nodes = instance.all_nodes
6728 if instance.disk_template == constants.DT_FILE:
6729 file_storage_dir = os.path.dirname(instance.disks[0].logical_id[1])
6730 result = lu.rpc.call_file_storage_dir_create(pnode, file_storage_dir)
6732 result.Raise("Failed to create directory '%s' on"
6733 " node %s" % (file_storage_dir, pnode))
6735 # Note: this needs to be kept in sync with adding of disks in
6736 # LUInstanceSetParams
6737 for idx, device in enumerate(instance.disks):
6738 if to_skip and idx in to_skip:
6740 logging.info("Creating volume %s for instance %s",
6741 device.iv_name, instance.name)
6743 for node in all_nodes:
6744 f_create = node == pnode
6745 _CreateBlockDev(lu, node, instance, device, f_create, info, f_create)
6748 def _RemoveDisks(lu, instance, target_node=None):
6749 """Remove all disks for an instance.
6751 This abstracts away some work from `AddInstance()` and
6752 `RemoveInstance()`. Note that in case some of the devices couldn't
6753 be removed, the removal will continue with the other ones (compare
6754 with `_CreateDisks()`).
6756 @type lu: L{LogicalUnit}
6757 @param lu: the logical unit on whose behalf we execute
6758 @type instance: L{objects.Instance}
6759 @param instance: the instance whose disks we should remove
6760 @type target_node: string
6761 @param target_node: used to override the node on which to remove the disks
6763 @return: the success of the removal
6766 logging.info("Removing block devices for instance %s", instance.name)
6769 for device in instance.disks:
6771 edata = [(target_node, device)]
6773 edata = device.ComputeNodeTree(instance.primary_node)
6774 for node, disk in edata:
6775 lu.cfg.SetDiskID(disk, node)
6776 msg = lu.rpc.call_blockdev_remove(node, disk).fail_msg
6778 lu.LogWarning("Could not remove block device %s on node %s,"
6779 " continuing anyway: %s", device.iv_name, node, msg)
6782 if instance.disk_template == constants.DT_FILE:
6783 file_storage_dir = os.path.dirname(instance.disks[0].logical_id[1])
6787 tgt = instance.primary_node
6788 result = lu.rpc.call_file_storage_dir_remove(tgt, file_storage_dir)
6790 lu.LogWarning("Could not remove directory '%s' on node %s: %s",
6791 file_storage_dir, instance.primary_node, result.fail_msg)
6797 def _ComputeDiskSizePerVG(disk_template, disks):
6798 """Compute disk size requirements in the volume group
6801 def _compute(disks, payload):
6802 """Universal algorithm
6807 vgs[disk["vg"]] = vgs.get("vg", 0) + disk["size"] + payload
6811 # Required free disk space as a function of disk and swap space
6813 constants.DT_DISKLESS: {},
6814 constants.DT_PLAIN: _compute(disks, 0),
6815 # 128 MB are added for drbd metadata for each disk
6816 constants.DT_DRBD8: _compute(disks, 128),
6817 constants.DT_FILE: {},
6820 if disk_template not in req_size_dict:
6821 raise errors.ProgrammerError("Disk template '%s' size requirement"
6822 " is unknown" % disk_template)
6824 return req_size_dict[disk_template]
6827 def _ComputeDiskSize(disk_template, disks):
6828 """Compute disk size requirements in the volume group
6831 # Required free disk space as a function of disk and swap space
6833 constants.DT_DISKLESS: None,
6834 constants.DT_PLAIN: sum(d["size"] for d in disks),
6835 # 128 MB are added for drbd metadata for each disk
6836 constants.DT_DRBD8: sum(d["size"] + 128 for d in disks),
6837 constants.DT_FILE: None,
6840 if disk_template not in req_size_dict:
6841 raise errors.ProgrammerError("Disk template '%s' size requirement"
6842 " is unknown" % disk_template)
6844 return req_size_dict[disk_template]
6847 def _FilterVmNodes(lu, nodenames):
6848 """Filters out non-vm_capable nodes from a list.
6850 @type lu: L{LogicalUnit}
6851 @param lu: the logical unit for which we check
6852 @type nodenames: list
6853 @param nodenames: the list of nodes on which we should check
6855 @return: the list of vm-capable nodes
6858 vm_nodes = frozenset(lu.cfg.GetNonVmCapableNodeList())
6859 return [name for name in nodenames if name not in vm_nodes]
6862 def _CheckHVParams(lu, nodenames, hvname, hvparams):
6863 """Hypervisor parameter validation.
6865 This function abstract the hypervisor parameter validation to be
6866 used in both instance create and instance modify.
6868 @type lu: L{LogicalUnit}
6869 @param lu: the logical unit for which we check
6870 @type nodenames: list
6871 @param nodenames: the list of nodes on which we should check
6872 @type hvname: string
6873 @param hvname: the name of the hypervisor we should use
6874 @type hvparams: dict
6875 @param hvparams: the parameters which we need to check
6876 @raise errors.OpPrereqError: if the parameters are not valid
6879 nodenames = _FilterVmNodes(lu, nodenames)
6880 hvinfo = lu.rpc.call_hypervisor_validate_params(nodenames,
6883 for node in nodenames:
6887 info.Raise("Hypervisor parameter validation failed on node %s" % node)
6890 def _CheckOSParams(lu, required, nodenames, osname, osparams):
6891 """OS parameters validation.
6893 @type lu: L{LogicalUnit}
6894 @param lu: the logical unit for which we check
6895 @type required: boolean
6896 @param required: whether the validation should fail if the OS is not
6898 @type nodenames: list
6899 @param nodenames: the list of nodes on which we should check
6900 @type osname: string
6901 @param osname: the name of the hypervisor we should use
6902 @type osparams: dict
6903 @param osparams: the parameters which we need to check
6904 @raise errors.OpPrereqError: if the parameters are not valid
6907 nodenames = _FilterVmNodes(lu, nodenames)
6908 result = lu.rpc.call_os_validate(required, nodenames, osname,
6909 [constants.OS_VALIDATE_PARAMETERS],
6911 for node, nres in result.items():
6912 # we don't check for offline cases since this should be run only
6913 # against the master node and/or an instance's nodes
6914 nres.Raise("OS Parameters validation failed on node %s" % node)
6915 if not nres.payload:
6916 lu.LogInfo("OS %s not found on node %s, validation skipped",
6920 class LUInstanceCreate(LogicalUnit):
6921 """Create an instance.
6924 HPATH = "instance-add"
6925 HTYPE = constants.HTYPE_INSTANCE
6928 def CheckArguments(self):
6932 # do not require name_check to ease forward/backward compatibility
6934 if self.op.no_install and self.op.start:
6935 self.LogInfo("No-installation mode selected, disabling startup")
6936 self.op.start = False
6937 # validate/normalize the instance name
6938 self.op.instance_name = \
6939 netutils.Hostname.GetNormalizedName(self.op.instance_name)
6941 if self.op.ip_check and not self.op.name_check:
6942 # TODO: make the ip check more flexible and not depend on the name check
6943 raise errors.OpPrereqError("Cannot do ip check without a name check",
6946 # check nics' parameter names
6947 for nic in self.op.nics:
6948 utils.ForceDictType(nic, constants.INIC_PARAMS_TYPES)
6950 # check disks. parameter names and consistent adopt/no-adopt strategy
6951 has_adopt = has_no_adopt = False
6952 for disk in self.op.disks:
6953 utils.ForceDictType(disk, constants.IDISK_PARAMS_TYPES)
6958 if has_adopt and has_no_adopt:
6959 raise errors.OpPrereqError("Either all disks are adopted or none is",
6962 if self.op.disk_template not in constants.DTS_MAY_ADOPT:
6963 raise errors.OpPrereqError("Disk adoption is not supported for the"
6964 " '%s' disk template" %
6965 self.op.disk_template,
6967 if self.op.iallocator is not None:
6968 raise errors.OpPrereqError("Disk adoption not allowed with an"
6969 " iallocator script", errors.ECODE_INVAL)
6970 if self.op.mode == constants.INSTANCE_IMPORT:
6971 raise errors.OpPrereqError("Disk adoption not allowed for"
6972 " instance import", errors.ECODE_INVAL)
6974 self.adopt_disks = has_adopt
6976 # instance name verification
6977 if self.op.name_check:
6978 self.hostname1 = netutils.GetHostname(name=self.op.instance_name)
6979 self.op.instance_name = self.hostname1.name
6980 # used in CheckPrereq for ip ping check
6981 self.check_ip = self.hostname1.ip
6983 self.check_ip = None
6985 # file storage checks
6986 if (self.op.file_driver and
6987 not self.op.file_driver in constants.FILE_DRIVER):
6988 raise errors.OpPrereqError("Invalid file driver name '%s'" %
6989 self.op.file_driver, errors.ECODE_INVAL)
6991 if self.op.file_storage_dir and os.path.isabs(self.op.file_storage_dir):
6992 raise errors.OpPrereqError("File storage directory path not absolute",
6995 ### Node/iallocator related checks
6996 _CheckIAllocatorOrNode(self, "iallocator", "pnode")
6998 if self.op.pnode is not None:
6999 if self.op.disk_template in constants.DTS_NET_MIRROR:
7000 if self.op.snode is None:
7001 raise errors.OpPrereqError("The networked disk templates need"
7002 " a mirror node", errors.ECODE_INVAL)
7004 self.LogWarning("Secondary node will be ignored on non-mirrored disk"
7006 self.op.snode = None
7008 self._cds = _GetClusterDomainSecret()
7010 if self.op.mode == constants.INSTANCE_IMPORT:
7011 # On import force_variant must be True, because if we forced it at
7012 # initial install, our only chance when importing it back is that it
7014 self.op.force_variant = True
7016 if self.op.no_install:
7017 self.LogInfo("No-installation mode has no effect during import")
7019 elif self.op.mode == constants.INSTANCE_CREATE:
7020 if self.op.os_type is None:
7021 raise errors.OpPrereqError("No guest OS specified",
7023 if self.op.os_type in self.cfg.GetClusterInfo().blacklisted_os:
7024 raise errors.OpPrereqError("Guest OS '%s' is not allowed for"
7025 " installation" % self.op.os_type,
7027 if self.op.disk_template is None:
7028 raise errors.OpPrereqError("No disk template specified",
7031 elif self.op.mode == constants.INSTANCE_REMOTE_IMPORT:
7032 # Check handshake to ensure both clusters have the same domain secret
7033 src_handshake = self.op.source_handshake
7034 if not src_handshake:
7035 raise errors.OpPrereqError("Missing source handshake",
7038 errmsg = masterd.instance.CheckRemoteExportHandshake(self._cds,
7041 raise errors.OpPrereqError("Invalid handshake: %s" % errmsg,
7044 # Load and check source CA
7045 self.source_x509_ca_pem = self.op.source_x509_ca
7046 if not self.source_x509_ca_pem:
7047 raise errors.OpPrereqError("Missing source X509 CA",
7051 (cert, _) = utils.LoadSignedX509Certificate(self.source_x509_ca_pem,
7053 except OpenSSL.crypto.Error, err:
7054 raise errors.OpPrereqError("Unable to load source X509 CA (%s)" %
7055 (err, ), errors.ECODE_INVAL)
7057 (errcode, msg) = utils.VerifyX509Certificate(cert, None, None)
7058 if errcode is not None:
7059 raise errors.OpPrereqError("Invalid source X509 CA (%s)" % (msg, ),
7062 self.source_x509_ca = cert
7064 src_instance_name = self.op.source_instance_name
7065 if not src_instance_name:
7066 raise errors.OpPrereqError("Missing source instance name",
7069 self.source_instance_name = \
7070 netutils.GetHostname(name=src_instance_name).name
7073 raise errors.OpPrereqError("Invalid instance creation mode %r" %
7074 self.op.mode, errors.ECODE_INVAL)
7076 def ExpandNames(self):
7077 """ExpandNames for CreateInstance.
7079 Figure out the right locks for instance creation.
7082 self.needed_locks = {}
7084 instance_name = self.op.instance_name
7085 # this is just a preventive check, but someone might still add this
7086 # instance in the meantime, and creation will fail at lock-add time
7087 if instance_name in self.cfg.GetInstanceList():
7088 raise errors.OpPrereqError("Instance '%s' is already in the cluster" %
7089 instance_name, errors.ECODE_EXISTS)
7091 self.add_locks[locking.LEVEL_INSTANCE] = instance_name
7093 if self.op.iallocator:
7094 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
7096 self.op.pnode = _ExpandNodeName(self.cfg, self.op.pnode)
7097 nodelist = [self.op.pnode]
7098 if self.op.snode is not None:
7099 self.op.snode = _ExpandNodeName(self.cfg, self.op.snode)
7100 nodelist.append(self.op.snode)
7101 self.needed_locks[locking.LEVEL_NODE] = nodelist
7103 # in case of import lock the source node too
7104 if self.op.mode == constants.INSTANCE_IMPORT:
7105 src_node = self.op.src_node
7106 src_path = self.op.src_path
7108 if src_path is None:
7109 self.op.src_path = src_path = self.op.instance_name
7111 if src_node is None:
7112 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
7113 self.op.src_node = None
7114 if os.path.isabs(src_path):
7115 raise errors.OpPrereqError("Importing an instance from an absolute"
7116 " path requires a source node option.",
7119 self.op.src_node = src_node = _ExpandNodeName(self.cfg, src_node)
7120 if self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET:
7121 self.needed_locks[locking.LEVEL_NODE].append(src_node)
7122 if not os.path.isabs(src_path):
7123 self.op.src_path = src_path = \
7124 utils.PathJoin(constants.EXPORT_DIR, src_path)
7126 def _RunAllocator(self):
7127 """Run the allocator based on input opcode.
7130 nics = [n.ToDict() for n in self.nics]
7131 ial = IAllocator(self.cfg, self.rpc,
7132 mode=constants.IALLOCATOR_MODE_ALLOC,
7133 name=self.op.instance_name,
7134 disk_template=self.op.disk_template,
7137 vcpus=self.be_full[constants.BE_VCPUS],
7138 mem_size=self.be_full[constants.BE_MEMORY],
7141 hypervisor=self.op.hypervisor,
7144 ial.Run(self.op.iallocator)
7147 raise errors.OpPrereqError("Can't compute nodes using"
7148 " iallocator '%s': %s" %
7149 (self.op.iallocator, ial.info),
7151 if len(ial.result) != ial.required_nodes:
7152 raise errors.OpPrereqError("iallocator '%s' returned invalid number"
7153 " of nodes (%s), required %s" %
7154 (self.op.iallocator, len(ial.result),
7155 ial.required_nodes), errors.ECODE_FAULT)
7156 self.op.pnode = ial.result[0]
7157 self.LogInfo("Selected nodes for instance %s via iallocator %s: %s",
7158 self.op.instance_name, self.op.iallocator,
7159 utils.CommaJoin(ial.result))
7160 if ial.required_nodes == 2:
7161 self.op.snode = ial.result[1]
7163 def BuildHooksEnv(self):
7166 This runs on master, primary and secondary nodes of the instance.
7170 "ADD_MODE": self.op.mode,
7172 if self.op.mode == constants.INSTANCE_IMPORT:
7173 env["SRC_NODE"] = self.op.src_node
7174 env["SRC_PATH"] = self.op.src_path
7175 env["SRC_IMAGES"] = self.src_images
7177 env.update(_BuildInstanceHookEnv(
7178 name=self.op.instance_name,
7179 primary_node=self.op.pnode,
7180 secondary_nodes=self.secondaries,
7181 status=self.op.start,
7182 os_type=self.op.os_type,
7183 memory=self.be_full[constants.BE_MEMORY],
7184 vcpus=self.be_full[constants.BE_VCPUS],
7185 nics=_NICListToTuple(self, self.nics),
7186 disk_template=self.op.disk_template,
7187 disks=[(d["size"], d["mode"]) for d in self.disks],
7190 hypervisor_name=self.op.hypervisor,
7193 nl = ([self.cfg.GetMasterNode(), self.op.pnode] +
7197 def _ReadExportInfo(self):
7198 """Reads the export information from disk.
7200 It will override the opcode source node and path with the actual
7201 information, if these two were not specified before.
7203 @return: the export information
7206 assert self.op.mode == constants.INSTANCE_IMPORT
7208 src_node = self.op.src_node
7209 src_path = self.op.src_path
7211 if src_node is None:
7212 locked_nodes = self.acquired_locks[locking.LEVEL_NODE]
7213 exp_list = self.rpc.call_export_list(locked_nodes)
7215 for node in exp_list:
7216 if exp_list[node].fail_msg:
7218 if src_path in exp_list[node].payload:
7220 self.op.src_node = src_node = node
7221 self.op.src_path = src_path = utils.PathJoin(constants.EXPORT_DIR,
7225 raise errors.OpPrereqError("No export found for relative path %s" %
7226 src_path, errors.ECODE_INVAL)
7228 _CheckNodeOnline(self, src_node)
7229 result = self.rpc.call_export_info(src_node, src_path)
7230 result.Raise("No export or invalid export found in dir %s" % src_path)
7232 export_info = objects.SerializableConfigParser.Loads(str(result.payload))
7233 if not export_info.has_section(constants.INISECT_EXP):
7234 raise errors.ProgrammerError("Corrupted export config",
7235 errors.ECODE_ENVIRON)
7237 ei_version = export_info.get(constants.INISECT_EXP, "version")
7238 if (int(ei_version) != constants.EXPORT_VERSION):
7239 raise errors.OpPrereqError("Wrong export version %s (wanted %d)" %
7240 (ei_version, constants.EXPORT_VERSION),
7241 errors.ECODE_ENVIRON)
7244 def _ReadExportParams(self, einfo):
7245 """Use export parameters as defaults.
7247 In case the opcode doesn't specify (as in override) some instance
7248 parameters, then try to use them from the export information, if
7252 self.op.os_type = einfo.get(constants.INISECT_EXP, "os")
7254 if self.op.disk_template is None:
7255 if einfo.has_option(constants.INISECT_INS, "disk_template"):
7256 self.op.disk_template = einfo.get(constants.INISECT_INS,
7259 raise errors.OpPrereqError("No disk template specified and the export"
7260 " is missing the disk_template information",
7263 if not self.op.disks:
7264 if einfo.has_option(constants.INISECT_INS, "disk_count"):
7266 # TODO: import the disk iv_name too
7267 for idx in range(einfo.getint(constants.INISECT_INS, "disk_count")):
7268 disk_sz = einfo.getint(constants.INISECT_INS, "disk%d_size" % idx)
7269 disks.append({"size": disk_sz})
7270 self.op.disks = disks
7272 raise errors.OpPrereqError("No disk info specified and the export"
7273 " is missing the disk information",
7276 if (not self.op.nics and
7277 einfo.has_option(constants.INISECT_INS, "nic_count")):
7279 for idx in range(einfo.getint(constants.INISECT_INS, "nic_count")):
7281 for name in list(constants.NICS_PARAMETERS) + ["ip", "mac"]:
7282 v = einfo.get(constants.INISECT_INS, "nic%d_%s" % (idx, name))
7287 if (self.op.hypervisor is None and
7288 einfo.has_option(constants.INISECT_INS, "hypervisor")):
7289 self.op.hypervisor = einfo.get(constants.INISECT_INS, "hypervisor")
7290 if einfo.has_section(constants.INISECT_HYP):
7291 # use the export parameters but do not override the ones
7292 # specified by the user
7293 for name, value in einfo.items(constants.INISECT_HYP):
7294 if name not in self.op.hvparams:
7295 self.op.hvparams[name] = value
7297 if einfo.has_section(constants.INISECT_BEP):
7298 # use the parameters, without overriding
7299 for name, value in einfo.items(constants.INISECT_BEP):
7300 if name not in self.op.beparams:
7301 self.op.beparams[name] = value
7303 # try to read the parameters old style, from the main section
7304 for name in constants.BES_PARAMETERS:
7305 if (name not in self.op.beparams and
7306 einfo.has_option(constants.INISECT_INS, name)):
7307 self.op.beparams[name] = einfo.get(constants.INISECT_INS, name)
7309 if einfo.has_section(constants.INISECT_OSP):
7310 # use the parameters, without overriding
7311 for name, value in einfo.items(constants.INISECT_OSP):
7312 if name not in self.op.osparams:
7313 self.op.osparams[name] = value
7315 def _RevertToDefaults(self, cluster):
7316 """Revert the instance parameters to the default values.
7320 hv_defs = cluster.SimpleFillHV(self.op.hypervisor, self.op.os_type, {})
7321 for name in self.op.hvparams.keys():
7322 if name in hv_defs and hv_defs[name] == self.op.hvparams[name]:
7323 del self.op.hvparams[name]
7325 be_defs = cluster.SimpleFillBE({})
7326 for name in self.op.beparams.keys():
7327 if name in be_defs and be_defs[name] == self.op.beparams[name]:
7328 del self.op.beparams[name]
7330 nic_defs = cluster.SimpleFillNIC({})
7331 for nic in self.op.nics:
7332 for name in constants.NICS_PARAMETERS:
7333 if name in nic and name in nic_defs and nic[name] == nic_defs[name]:
7336 os_defs = cluster.SimpleFillOS(self.op.os_type, {})
7337 for name in self.op.osparams.keys():
7338 if name in os_defs and os_defs[name] == self.op.osparams[name]:
7339 del self.op.osparams[name]
7341 def CheckPrereq(self):
7342 """Check prerequisites.
7345 if self.op.mode == constants.INSTANCE_IMPORT:
7346 export_info = self._ReadExportInfo()
7347 self._ReadExportParams(export_info)
7349 if (not self.cfg.GetVGName() and
7350 self.op.disk_template not in constants.DTS_NOT_LVM):
7351 raise errors.OpPrereqError("Cluster does not support lvm-based"
7352 " instances", errors.ECODE_STATE)
7354 if self.op.hypervisor is None:
7355 self.op.hypervisor = self.cfg.GetHypervisorType()
7357 cluster = self.cfg.GetClusterInfo()
7358 enabled_hvs = cluster.enabled_hypervisors
7359 if self.op.hypervisor not in enabled_hvs:
7360 raise errors.OpPrereqError("Selected hypervisor (%s) not enabled in the"
7361 " cluster (%s)" % (self.op.hypervisor,
7362 ",".join(enabled_hvs)),
7365 # check hypervisor parameter syntax (locally)
7366 utils.ForceDictType(self.op.hvparams, constants.HVS_PARAMETER_TYPES)
7367 filled_hvp = cluster.SimpleFillHV(self.op.hypervisor, self.op.os_type,
7369 hv_type = hypervisor.GetHypervisor(self.op.hypervisor)
7370 hv_type.CheckParameterSyntax(filled_hvp)
7371 self.hv_full = filled_hvp
7372 # check that we don't specify global parameters on an instance
7373 _CheckGlobalHvParams(self.op.hvparams)
7375 # fill and remember the beparams dict
7376 utils.ForceDictType(self.op.beparams, constants.BES_PARAMETER_TYPES)
7377 self.be_full = cluster.SimpleFillBE(self.op.beparams)
7379 # build os parameters
7380 self.os_full = cluster.SimpleFillOS(self.op.os_type, self.op.osparams)
7382 # now that hvp/bep are in final format, let's reset to defaults,
7384 if self.op.identify_defaults:
7385 self._RevertToDefaults(cluster)
7389 for idx, nic in enumerate(self.op.nics):
7390 nic_mode_req = nic.get("mode", None)
7391 nic_mode = nic_mode_req
7392 if nic_mode is None:
7393 nic_mode = cluster.nicparams[constants.PP_DEFAULT][constants.NIC_MODE]
7395 # in routed mode, for the first nic, the default ip is 'auto'
7396 if nic_mode == constants.NIC_MODE_ROUTED and idx == 0:
7397 default_ip_mode = constants.VALUE_AUTO
7399 default_ip_mode = constants.VALUE_NONE
7401 # ip validity checks
7402 ip = nic.get("ip", default_ip_mode)
7403 if ip is None or ip.lower() == constants.VALUE_NONE:
7405 elif ip.lower() == constants.VALUE_AUTO:
7406 if not self.op.name_check:
7407 raise errors.OpPrereqError("IP address set to auto but name checks"
7408 " have been skipped",
7410 nic_ip = self.hostname1.ip
7412 if not netutils.IPAddress.IsValid(ip):
7413 raise errors.OpPrereqError("Invalid IP address '%s'" % ip,
7417 # TODO: check the ip address for uniqueness
7418 if nic_mode == constants.NIC_MODE_ROUTED and not nic_ip:
7419 raise errors.OpPrereqError("Routed nic mode requires an ip address",
7422 # MAC address verification
7423 mac = nic.get("mac", constants.VALUE_AUTO)
7424 if mac not in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
7425 mac = utils.NormalizeAndValidateMac(mac)
7428 self.cfg.ReserveMAC(mac, self.proc.GetECId())
7429 except errors.ReservationError:
7430 raise errors.OpPrereqError("MAC address %s already in use"
7431 " in cluster" % mac,
7432 errors.ECODE_NOTUNIQUE)
7434 # bridge verification
7435 bridge = nic.get("bridge", None)
7436 link = nic.get("link", None)
7438 raise errors.OpPrereqError("Cannot pass 'bridge' and 'link'"
7439 " at the same time", errors.ECODE_INVAL)
7440 elif bridge and nic_mode == constants.NIC_MODE_ROUTED:
7441 raise errors.OpPrereqError("Cannot pass 'bridge' on a routed nic",
7448 nicparams[constants.NIC_MODE] = nic_mode_req
7450 nicparams[constants.NIC_LINK] = link
7452 check_params = cluster.SimpleFillNIC(nicparams)
7453 objects.NIC.CheckParameterSyntax(check_params)
7454 self.nics.append(objects.NIC(mac=mac, ip=nic_ip, nicparams=nicparams))
7456 # disk checks/pre-build
7458 for disk in self.op.disks:
7459 mode = disk.get("mode", constants.DISK_RDWR)
7460 if mode not in constants.DISK_ACCESS_SET:
7461 raise errors.OpPrereqError("Invalid disk access mode '%s'" %
7462 mode, errors.ECODE_INVAL)
7463 size = disk.get("size", None)
7465 raise errors.OpPrereqError("Missing disk size", errors.ECODE_INVAL)
7468 except (TypeError, ValueError):
7469 raise errors.OpPrereqError("Invalid disk size '%s'" % size,
7471 vg = disk.get("vg", self.cfg.GetVGName())
7472 new_disk = {"size": size, "mode": mode, "vg": vg}
7474 new_disk["adopt"] = disk["adopt"]
7475 self.disks.append(new_disk)
7477 if self.op.mode == constants.INSTANCE_IMPORT:
7479 # Check that the new instance doesn't have less disks than the export
7480 instance_disks = len(self.disks)
7481 export_disks = export_info.getint(constants.INISECT_INS, 'disk_count')
7482 if instance_disks < export_disks:
7483 raise errors.OpPrereqError("Not enough disks to import."
7484 " (instance: %d, export: %d)" %
7485 (instance_disks, export_disks),
7489 for idx in range(export_disks):
7490 option = 'disk%d_dump' % idx
7491 if export_info.has_option(constants.INISECT_INS, option):
7492 # FIXME: are the old os-es, disk sizes, etc. useful?
7493 export_name = export_info.get(constants.INISECT_INS, option)
7494 image = utils.PathJoin(self.op.src_path, export_name)
7495 disk_images.append(image)
7497 disk_images.append(False)
7499 self.src_images = disk_images
7501 old_name = export_info.get(constants.INISECT_INS, 'name')
7503 exp_nic_count = export_info.getint(constants.INISECT_INS, 'nic_count')
7504 except (TypeError, ValueError), err:
7505 raise errors.OpPrereqError("Invalid export file, nic_count is not"
7506 " an integer: %s" % str(err),
7508 if self.op.instance_name == old_name:
7509 for idx, nic in enumerate(self.nics):
7510 if nic.mac == constants.VALUE_AUTO and exp_nic_count >= idx:
7511 nic_mac_ini = 'nic%d_mac' % idx
7512 nic.mac = export_info.get(constants.INISECT_INS, nic_mac_ini)
7514 # ENDIF: self.op.mode == constants.INSTANCE_IMPORT
7516 # ip ping checks (we use the same ip that was resolved in ExpandNames)
7517 if self.op.ip_check:
7518 if netutils.TcpPing(self.check_ip, constants.DEFAULT_NODED_PORT):
7519 raise errors.OpPrereqError("IP %s of instance %s already in use" %
7520 (self.check_ip, self.op.instance_name),
7521 errors.ECODE_NOTUNIQUE)
7523 #### mac address generation
7524 # By generating here the mac address both the allocator and the hooks get
7525 # the real final mac address rather than the 'auto' or 'generate' value.
7526 # There is a race condition between the generation and the instance object
7527 # creation, which means that we know the mac is valid now, but we're not
7528 # sure it will be when we actually add the instance. If things go bad
7529 # adding the instance will abort because of a duplicate mac, and the
7530 # creation job will fail.
7531 for nic in self.nics:
7532 if nic.mac in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
7533 nic.mac = self.cfg.GenerateMAC(self.proc.GetECId())
7537 if self.op.iallocator is not None:
7538 self._RunAllocator()
7540 #### node related checks
7542 # check primary node
7543 self.pnode = pnode = self.cfg.GetNodeInfo(self.op.pnode)
7544 assert self.pnode is not None, \
7545 "Cannot retrieve locked node %s" % self.op.pnode
7547 raise errors.OpPrereqError("Cannot use offline primary node '%s'" %
7548 pnode.name, errors.ECODE_STATE)
7550 raise errors.OpPrereqError("Cannot use drained primary node '%s'" %
7551 pnode.name, errors.ECODE_STATE)
7552 if not pnode.vm_capable:
7553 raise errors.OpPrereqError("Cannot use non-vm_capable primary node"
7554 " '%s'" % pnode.name, errors.ECODE_STATE)
7556 self.secondaries = []
7558 # mirror node verification
7559 if self.op.disk_template in constants.DTS_NET_MIRROR:
7560 if self.op.snode == pnode.name:
7561 raise errors.OpPrereqError("The secondary node cannot be the"
7562 " primary node.", errors.ECODE_INVAL)
7563 _CheckNodeOnline(self, self.op.snode)
7564 _CheckNodeNotDrained(self, self.op.snode)
7565 _CheckNodeVmCapable(self, self.op.snode)
7566 self.secondaries.append(self.op.snode)
7568 nodenames = [pnode.name] + self.secondaries
7570 if not self.adopt_disks:
7571 # Check lv size requirements, if not adopting
7572 req_sizes = _ComputeDiskSizePerVG(self.op.disk_template, self.disks)
7573 _CheckNodesFreeDiskPerVG(self, nodenames, req_sizes)
7575 else: # instead, we must check the adoption data
7576 all_lvs = set([i["vg"] + "/" + i["adopt"] for i in self.disks])
7577 if len(all_lvs) != len(self.disks):
7578 raise errors.OpPrereqError("Duplicate volume names given for adoption",
7580 for lv_name in all_lvs:
7582 # FIXME: lv_name here is "vg/lv" need to ensure that other calls
7583 # to ReserveLV uses the same syntax
7584 self.cfg.ReserveLV(lv_name, self.proc.GetECId())
7585 except errors.ReservationError:
7586 raise errors.OpPrereqError("LV named %s used by another instance" %
7587 lv_name, errors.ECODE_NOTUNIQUE)
7589 vg_names = self.rpc.call_vg_list([pnode.name])[pnode.name]
7590 vg_names.Raise("Cannot get VG information from node %s" % pnode.name)
7592 node_lvs = self.rpc.call_lv_list([pnode.name],
7593 vg_names.payload.keys())[pnode.name]
7594 node_lvs.Raise("Cannot get LV information from node %s" % pnode.name)
7595 node_lvs = node_lvs.payload
7597 delta = all_lvs.difference(node_lvs.keys())
7599 raise errors.OpPrereqError("Missing logical volume(s): %s" %
7600 utils.CommaJoin(delta),
7602 online_lvs = [lv for lv in all_lvs if node_lvs[lv][2]]
7604 raise errors.OpPrereqError("Online logical volumes found, cannot"
7605 " adopt: %s" % utils.CommaJoin(online_lvs),
7607 # update the size of disk based on what is found
7608 for dsk in self.disks:
7609 dsk["size"] = int(float(node_lvs[dsk["vg"] + "/" + dsk["adopt"]][0]))
7611 _CheckHVParams(self, nodenames, self.op.hypervisor, self.op.hvparams)
7613 _CheckNodeHasOS(self, pnode.name, self.op.os_type, self.op.force_variant)
7614 # check OS parameters (remotely)
7615 _CheckOSParams(self, True, nodenames, self.op.os_type, self.os_full)
7617 _CheckNicsBridgesExist(self, self.nics, self.pnode.name)
7619 # memory check on primary node
7621 _CheckNodeFreeMemory(self, self.pnode.name,
7622 "creating instance %s" % self.op.instance_name,
7623 self.be_full[constants.BE_MEMORY],
7626 self.dry_run_result = list(nodenames)
7628 def Exec(self, feedback_fn):
7629 """Create and add the instance to the cluster.
7632 instance = self.op.instance_name
7633 pnode_name = self.pnode.name
7635 ht_kind = self.op.hypervisor
7636 if ht_kind in constants.HTS_REQ_PORT:
7637 network_port = self.cfg.AllocatePort()
7641 if constants.ENABLE_FILE_STORAGE:
7642 # this is needed because os.path.join does not accept None arguments
7643 if self.op.file_storage_dir is None:
7644 string_file_storage_dir = ""
7646 string_file_storage_dir = self.op.file_storage_dir
7648 # build the full file storage dir path
7649 file_storage_dir = utils.PathJoin(self.cfg.GetFileStorageDir(),
7650 string_file_storage_dir, instance)
7652 file_storage_dir = ""
7654 disks = _GenerateDiskTemplate(self,
7655 self.op.disk_template,
7656 instance, pnode_name,
7660 self.op.file_driver,
7664 iobj = objects.Instance(name=instance, os=self.op.os_type,
7665 primary_node=pnode_name,
7666 nics=self.nics, disks=disks,
7667 disk_template=self.op.disk_template,
7669 network_port=network_port,
7670 beparams=self.op.beparams,
7671 hvparams=self.op.hvparams,
7672 hypervisor=self.op.hypervisor,
7673 osparams=self.op.osparams,
7676 if self.adopt_disks:
7677 # rename LVs to the newly-generated names; we need to construct
7678 # 'fake' LV disks with the old data, plus the new unique_id
7679 tmp_disks = [objects.Disk.FromDict(v.ToDict()) for v in disks]
7681 for t_dsk, a_dsk in zip (tmp_disks, self.disks):
7682 rename_to.append(t_dsk.logical_id)
7683 t_dsk.logical_id = (t_dsk.logical_id[0], a_dsk["adopt"])
7684 self.cfg.SetDiskID(t_dsk, pnode_name)
7685 result = self.rpc.call_blockdev_rename(pnode_name,
7686 zip(tmp_disks, rename_to))
7687 result.Raise("Failed to rename adoped LVs")
7689 feedback_fn("* creating instance disks...")
7691 _CreateDisks(self, iobj)
7692 except errors.OpExecError:
7693 self.LogWarning("Device creation failed, reverting...")
7695 _RemoveDisks(self, iobj)
7697 self.cfg.ReleaseDRBDMinors(instance)
7700 feedback_fn("adding instance %s to cluster config" % instance)
7702 self.cfg.AddInstance(iobj, self.proc.GetECId())
7704 # Declare that we don't want to remove the instance lock anymore, as we've
7705 # added the instance to the config
7706 del self.remove_locks[locking.LEVEL_INSTANCE]
7707 # Unlock all the nodes
7708 if self.op.mode == constants.INSTANCE_IMPORT:
7709 nodes_keep = [self.op.src_node]
7710 nodes_release = [node for node in self.acquired_locks[locking.LEVEL_NODE]
7711 if node != self.op.src_node]
7712 self.context.glm.release(locking.LEVEL_NODE, nodes_release)
7713 self.acquired_locks[locking.LEVEL_NODE] = nodes_keep
7715 self.context.glm.release(locking.LEVEL_NODE)
7716 del self.acquired_locks[locking.LEVEL_NODE]
7719 if not self.adopt_disks and self.cfg.GetClusterInfo().prealloc_wipe_disks:
7720 feedback_fn("* wiping instance disks...")
7722 _WipeDisks(self, iobj)
7723 except errors.OpExecError, err:
7724 logging.exception("Wiping disks failed")
7725 self.LogWarning("Wiping instance disks failed (%s)", err)
7729 # Something is already wrong with the disks, don't do anything else
7731 elif self.op.wait_for_sync:
7732 disk_abort = not _WaitForSync(self, iobj)
7733 elif iobj.disk_template in constants.DTS_NET_MIRROR:
7734 # make sure the disks are not degraded (still sync-ing is ok)
7736 feedback_fn("* checking mirrors status")
7737 disk_abort = not _WaitForSync(self, iobj, oneshot=True)
7742 _RemoveDisks(self, iobj)
7743 self.cfg.RemoveInstance(iobj.name)
7744 # Make sure the instance lock gets removed
7745 self.remove_locks[locking.LEVEL_INSTANCE] = iobj.name
7746 raise errors.OpExecError("There are some degraded disks for"
7749 if iobj.disk_template != constants.DT_DISKLESS and not self.adopt_disks:
7750 if self.op.mode == constants.INSTANCE_CREATE:
7751 if not self.op.no_install:
7752 feedback_fn("* running the instance OS create scripts...")
7753 # FIXME: pass debug option from opcode to backend
7754 result = self.rpc.call_instance_os_add(pnode_name, iobj, False,
7755 self.op.debug_level)
7756 result.Raise("Could not add os for instance %s"
7757 " on node %s" % (instance, pnode_name))
7759 elif self.op.mode == constants.INSTANCE_IMPORT:
7760 feedback_fn("* running the instance OS import scripts...")
7764 for idx, image in enumerate(self.src_images):
7768 # FIXME: pass debug option from opcode to backend
7769 dt = masterd.instance.DiskTransfer("disk/%s" % idx,
7770 constants.IEIO_FILE, (image, ),
7771 constants.IEIO_SCRIPT,
7772 (iobj.disks[idx], idx),
7774 transfers.append(dt)
7777 masterd.instance.TransferInstanceData(self, feedback_fn,
7778 self.op.src_node, pnode_name,
7779 self.pnode.secondary_ip,
7781 if not compat.all(import_result):
7782 self.LogWarning("Some disks for instance %s on node %s were not"
7783 " imported successfully" % (instance, pnode_name))
7785 elif self.op.mode == constants.INSTANCE_REMOTE_IMPORT:
7786 feedback_fn("* preparing remote import...")
7787 # The source cluster will stop the instance before attempting to make a
7788 # connection. In some cases stopping an instance can take a long time,
7789 # hence the shutdown timeout is added to the connection timeout.
7790 connect_timeout = (constants.RIE_CONNECT_TIMEOUT +
7791 self.op.source_shutdown_timeout)
7792 timeouts = masterd.instance.ImportExportTimeouts(connect_timeout)
7794 assert iobj.primary_node == self.pnode.name
7796 masterd.instance.RemoteImport(self, feedback_fn, iobj, self.pnode,
7797 self.source_x509_ca,
7798 self._cds, timeouts)
7799 if not compat.all(disk_results):
7800 # TODO: Should the instance still be started, even if some disks
7801 # failed to import (valid for local imports, too)?
7802 self.LogWarning("Some disks for instance %s on node %s were not"
7803 " imported successfully" % (instance, pnode_name))
7805 # Run rename script on newly imported instance
7806 assert iobj.name == instance
7807 feedback_fn("Running rename script for %s" % instance)
7808 result = self.rpc.call_instance_run_rename(pnode_name, iobj,
7809 self.source_instance_name,
7810 self.op.debug_level)
7812 self.LogWarning("Failed to run rename script for %s on node"
7813 " %s: %s" % (instance, pnode_name, result.fail_msg))
7816 # also checked in the prereq part
7817 raise errors.ProgrammerError("Unknown OS initialization mode '%s'"
7821 iobj.admin_up = True
7822 self.cfg.Update(iobj, feedback_fn)
7823 logging.info("Starting instance %s on node %s", instance, pnode_name)
7824 feedback_fn("* starting instance...")
7825 result = self.rpc.call_instance_start(pnode_name, iobj, None, None)
7826 result.Raise("Could not start instance")
7828 return list(iobj.all_nodes)
7831 class LUInstanceConsole(NoHooksLU):
7832 """Connect to an instance's console.
7834 This is somewhat special in that it returns the command line that
7835 you need to run on the master node in order to connect to the
7841 def ExpandNames(self):
7842 self._ExpandAndLockInstance()
7844 def CheckPrereq(self):
7845 """Check prerequisites.
7847 This checks that the instance is in the cluster.
7850 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
7851 assert self.instance is not None, \
7852 "Cannot retrieve locked instance %s" % self.op.instance_name
7853 _CheckNodeOnline(self, self.instance.primary_node)
7855 def Exec(self, feedback_fn):
7856 """Connect to the console of an instance
7859 instance = self.instance
7860 node = instance.primary_node
7862 node_insts = self.rpc.call_instance_list([node],
7863 [instance.hypervisor])[node]
7864 node_insts.Raise("Can't get node information from %s" % node)
7866 if instance.name not in node_insts.payload:
7867 if instance.admin_up:
7868 state = "ERROR_down"
7870 state = "ADMIN_down"
7871 raise errors.OpExecError("Instance %s is not running (state %s)" %
7872 (instance.name, state))
7874 logging.debug("Connecting to console of %s on %s", instance.name, node)
7876 return _GetInstanceConsole(self.cfg.GetClusterInfo(), instance)
7879 def _GetInstanceConsole(cluster, instance):
7880 """Returns console information for an instance.
7882 @type cluster: L{objects.Cluster}
7883 @type instance: L{objects.Instance}
7887 hyper = hypervisor.GetHypervisor(instance.hypervisor)
7888 # beparams and hvparams are passed separately, to avoid editing the
7889 # instance and then saving the defaults in the instance itself.
7890 hvparams = cluster.FillHV(instance)
7891 beparams = cluster.FillBE(instance)
7892 console = hyper.GetInstanceConsole(instance, hvparams, beparams)
7894 assert console.instance == instance.name
7895 assert console.Validate()
7897 return console.ToDict()
7900 class LUInstanceReplaceDisks(LogicalUnit):
7901 """Replace the disks of an instance.
7904 HPATH = "mirrors-replace"
7905 HTYPE = constants.HTYPE_INSTANCE
7908 def CheckArguments(self):
7909 TLReplaceDisks.CheckArguments(self.op.mode, self.op.remote_node,
7912 def ExpandNames(self):
7913 self._ExpandAndLockInstance()
7915 if self.op.iallocator is not None:
7916 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
7918 elif self.op.remote_node is not None:
7919 remote_node = _ExpandNodeName(self.cfg, self.op.remote_node)
7920 self.op.remote_node = remote_node
7922 # Warning: do not remove the locking of the new secondary here
7923 # unless DRBD8.AddChildren is changed to work in parallel;
7924 # currently it doesn't since parallel invocations of
7925 # FindUnusedMinor will conflict
7926 self.needed_locks[locking.LEVEL_NODE] = [remote_node]
7927 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_APPEND
7930 self.needed_locks[locking.LEVEL_NODE] = []
7931 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
7933 self.replacer = TLReplaceDisks(self, self.op.instance_name, self.op.mode,
7934 self.op.iallocator, self.op.remote_node,
7935 self.op.disks, False, self.op.early_release)
7937 self.tasklets = [self.replacer]
7939 def DeclareLocks(self, level):
7940 # If we're not already locking all nodes in the set we have to declare the
7941 # instance's primary/secondary nodes.
7942 if (level == locking.LEVEL_NODE and
7943 self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET):
7944 self._LockInstancesNodes()
7946 def BuildHooksEnv(self):
7949 This runs on the master, the primary and all the secondaries.
7952 instance = self.replacer.instance
7954 "MODE": self.op.mode,
7955 "NEW_SECONDARY": self.op.remote_node,
7956 "OLD_SECONDARY": instance.secondary_nodes[0],
7958 env.update(_BuildInstanceHookEnvByObject(self, instance))
7960 self.cfg.GetMasterNode(),
7961 instance.primary_node,
7963 if self.op.remote_node is not None:
7964 nl.append(self.op.remote_node)
7968 class TLReplaceDisks(Tasklet):
7969 """Replaces disks for an instance.
7971 Note: Locking is not within the scope of this class.
7974 def __init__(self, lu, instance_name, mode, iallocator_name, remote_node,
7975 disks, delay_iallocator, early_release):
7976 """Initializes this class.
7979 Tasklet.__init__(self, lu)
7982 self.instance_name = instance_name
7984 self.iallocator_name = iallocator_name
7985 self.remote_node = remote_node
7987 self.delay_iallocator = delay_iallocator
7988 self.early_release = early_release
7991 self.instance = None
7992 self.new_node = None
7993 self.target_node = None
7994 self.other_node = None
7995 self.remote_node_info = None
7996 self.node_secondary_ip = None
7999 def CheckArguments(mode, remote_node, iallocator):
8000 """Helper function for users of this class.
8003 # check for valid parameter combination
8004 if mode == constants.REPLACE_DISK_CHG:
8005 if remote_node is None and iallocator is None:
8006 raise errors.OpPrereqError("When changing the secondary either an"
8007 " iallocator script must be used or the"
8008 " new node given", errors.ECODE_INVAL)
8010 if remote_node is not None and iallocator is not None:
8011 raise errors.OpPrereqError("Give either the iallocator or the new"
8012 " secondary, not both", errors.ECODE_INVAL)
8014 elif remote_node is not None or iallocator is not None:
8015 # Not replacing the secondary
8016 raise errors.OpPrereqError("The iallocator and new node options can"
8017 " only be used when changing the"
8018 " secondary node", errors.ECODE_INVAL)
8021 def _RunAllocator(lu, iallocator_name, instance_name, relocate_from):
8022 """Compute a new secondary node using an IAllocator.
8025 ial = IAllocator(lu.cfg, lu.rpc,
8026 mode=constants.IALLOCATOR_MODE_RELOC,
8028 relocate_from=relocate_from)
8030 ial.Run(iallocator_name)
8033 raise errors.OpPrereqError("Can't compute nodes using iallocator '%s':"
8034 " %s" % (iallocator_name, ial.info),
8037 if len(ial.result) != ial.required_nodes:
8038 raise errors.OpPrereqError("iallocator '%s' returned invalid number"
8039 " of nodes (%s), required %s" %
8041 len(ial.result), ial.required_nodes),
8044 remote_node_name = ial.result[0]
8046 lu.LogInfo("Selected new secondary for instance '%s': %s",
8047 instance_name, remote_node_name)
8049 return remote_node_name
8051 def _FindFaultyDisks(self, node_name):
8052 return _FindFaultyInstanceDisks(self.cfg, self.rpc, self.instance,
8055 def CheckPrereq(self):
8056 """Check prerequisites.
8058 This checks that the instance is in the cluster.
8061 self.instance = instance = self.cfg.GetInstanceInfo(self.instance_name)
8062 assert instance is not None, \
8063 "Cannot retrieve locked instance %s" % self.instance_name
8065 if instance.disk_template != constants.DT_DRBD8:
8066 raise errors.OpPrereqError("Can only run replace disks for DRBD8-based"
8067 " instances", errors.ECODE_INVAL)
8069 if len(instance.secondary_nodes) != 1:
8070 raise errors.OpPrereqError("The instance has a strange layout,"
8071 " expected one secondary but found %d" %
8072 len(instance.secondary_nodes),
8075 if not self.delay_iallocator:
8076 self._CheckPrereq2()
8078 def _CheckPrereq2(self):
8079 """Check prerequisites, second part.
8081 This function should always be part of CheckPrereq. It was separated and is
8082 now called from Exec because during node evacuation iallocator was only
8083 called with an unmodified cluster model, not taking planned changes into
8087 instance = self.instance
8088 secondary_node = instance.secondary_nodes[0]
8090 if self.iallocator_name is None:
8091 remote_node = self.remote_node
8093 remote_node = self._RunAllocator(self.lu, self.iallocator_name,
8094 instance.name, instance.secondary_nodes)
8096 if remote_node is not None:
8097 self.remote_node_info = self.cfg.GetNodeInfo(remote_node)
8098 assert self.remote_node_info is not None, \
8099 "Cannot retrieve locked node %s" % remote_node
8101 self.remote_node_info = None
8103 if remote_node == self.instance.primary_node:
8104 raise errors.OpPrereqError("The specified node is the primary node of"
8105 " the instance.", errors.ECODE_INVAL)
8107 if remote_node == secondary_node:
8108 raise errors.OpPrereqError("The specified node is already the"
8109 " secondary node of the instance.",
8112 if self.disks and self.mode in (constants.REPLACE_DISK_AUTO,
8113 constants.REPLACE_DISK_CHG):
8114 raise errors.OpPrereqError("Cannot specify disks to be replaced",
8117 if self.mode == constants.REPLACE_DISK_AUTO:
8118 faulty_primary = self._FindFaultyDisks(instance.primary_node)
8119 faulty_secondary = self._FindFaultyDisks(secondary_node)
8121 if faulty_primary and faulty_secondary:
8122 raise errors.OpPrereqError("Instance %s has faulty disks on more than"
8123 " one node and can not be repaired"
8124 " automatically" % self.instance_name,
8128 self.disks = faulty_primary
8129 self.target_node = instance.primary_node
8130 self.other_node = secondary_node
8131 check_nodes = [self.target_node, self.other_node]
8132 elif faulty_secondary:
8133 self.disks = faulty_secondary
8134 self.target_node = secondary_node
8135 self.other_node = instance.primary_node
8136 check_nodes = [self.target_node, self.other_node]
8142 # Non-automatic modes
8143 if self.mode == constants.REPLACE_DISK_PRI:
8144 self.target_node = instance.primary_node
8145 self.other_node = secondary_node
8146 check_nodes = [self.target_node, self.other_node]
8148 elif self.mode == constants.REPLACE_DISK_SEC:
8149 self.target_node = secondary_node
8150 self.other_node = instance.primary_node
8151 check_nodes = [self.target_node, self.other_node]
8153 elif self.mode == constants.REPLACE_DISK_CHG:
8154 self.new_node = remote_node
8155 self.other_node = instance.primary_node
8156 self.target_node = secondary_node
8157 check_nodes = [self.new_node, self.other_node]
8159 _CheckNodeNotDrained(self.lu, remote_node)
8160 _CheckNodeVmCapable(self.lu, remote_node)
8162 old_node_info = self.cfg.GetNodeInfo(secondary_node)
8163 assert old_node_info is not None
8164 if old_node_info.offline and not self.early_release:
8165 # doesn't make sense to delay the release
8166 self.early_release = True
8167 self.lu.LogInfo("Old secondary %s is offline, automatically enabling"
8168 " early-release mode", secondary_node)
8171 raise errors.ProgrammerError("Unhandled disk replace mode (%s)" %
8174 # If not specified all disks should be replaced
8176 self.disks = range(len(self.instance.disks))
8178 for node in check_nodes:
8179 _CheckNodeOnline(self.lu, node)
8181 # Check whether disks are valid
8182 for disk_idx in self.disks:
8183 instance.FindDisk(disk_idx)
8185 # Get secondary node IP addresses
8188 for node_name in [self.target_node, self.other_node, self.new_node]:
8189 if node_name is not None:
8190 node_2nd_ip[node_name] = self.cfg.GetNodeInfo(node_name).secondary_ip
8192 self.node_secondary_ip = node_2nd_ip
8194 def Exec(self, feedback_fn):
8195 """Execute disk replacement.
8197 This dispatches the disk replacement to the appropriate handler.
8200 if self.delay_iallocator:
8201 self._CheckPrereq2()
8204 feedback_fn("No disks need replacement")
8207 feedback_fn("Replacing disk(s) %s for %s" %
8208 (utils.CommaJoin(self.disks), self.instance.name))
8210 activate_disks = (not self.instance.admin_up)
8212 # Activate the instance disks if we're replacing them on a down instance
8214 _StartInstanceDisks(self.lu, self.instance, True)
8217 # Should we replace the secondary node?
8218 if self.new_node is not None:
8219 fn = self._ExecDrbd8Secondary
8221 fn = self._ExecDrbd8DiskOnly
8223 return fn(feedback_fn)
8226 # Deactivate the instance disks if we're replacing them on a
8229 _SafeShutdownInstanceDisks(self.lu, self.instance)
8231 def _CheckVolumeGroup(self, nodes):
8232 self.lu.LogInfo("Checking volume groups")
8234 vgname = self.cfg.GetVGName()
8236 # Make sure volume group exists on all involved nodes
8237 results = self.rpc.call_vg_list(nodes)
8239 raise errors.OpExecError("Can't list volume groups on the nodes")
8243 res.Raise("Error checking node %s" % node)
8244 if vgname not in res.payload:
8245 raise errors.OpExecError("Volume group '%s' not found on node %s" %
8248 def _CheckDisksExistence(self, nodes):
8249 # Check disk existence
8250 for idx, dev in enumerate(self.instance.disks):
8251 if idx not in self.disks:
8255 self.lu.LogInfo("Checking disk/%d on %s" % (idx, node))
8256 self.cfg.SetDiskID(dev, node)
8258 result = self.rpc.call_blockdev_find(node, dev)
8260 msg = result.fail_msg
8261 if msg or not result.payload:
8263 msg = "disk not found"
8264 raise errors.OpExecError("Can't find disk/%d on node %s: %s" %
8267 def _CheckDisksConsistency(self, node_name, on_primary, ldisk):
8268 for idx, dev in enumerate(self.instance.disks):
8269 if idx not in self.disks:
8272 self.lu.LogInfo("Checking disk/%d consistency on node %s" %
8275 if not _CheckDiskConsistency(self.lu, dev, node_name, on_primary,
8277 raise errors.OpExecError("Node %s has degraded storage, unsafe to"
8278 " replace disks for instance %s" %
8279 (node_name, self.instance.name))
8281 def _CreateNewStorage(self, node_name):
8282 vgname = self.cfg.GetVGName()
8285 for idx, dev in enumerate(self.instance.disks):
8286 if idx not in self.disks:
8289 self.lu.LogInfo("Adding storage on %s for disk/%d" % (node_name, idx))
8291 self.cfg.SetDiskID(dev, node_name)
8293 lv_names = [".disk%d_%s" % (idx, suffix) for suffix in ["data", "meta"]]
8294 names = _GenerateUniqueNames(self.lu, lv_names)
8296 lv_data = objects.Disk(dev_type=constants.LD_LV, size=dev.size,
8297 logical_id=(vgname, names[0]))
8298 lv_meta = objects.Disk(dev_type=constants.LD_LV, size=128,
8299 logical_id=(vgname, names[1]))
8301 new_lvs = [lv_data, lv_meta]
8302 old_lvs = dev.children
8303 iv_names[dev.iv_name] = (dev, old_lvs, new_lvs)
8305 # we pass force_create=True to force the LVM creation
8306 for new_lv in new_lvs:
8307 _CreateBlockDev(self.lu, node_name, self.instance, new_lv, True,
8308 _GetInstanceInfoText(self.instance), False)
8312 def _CheckDevices(self, node_name, iv_names):
8313 for name, (dev, _, _) in iv_names.iteritems():
8314 self.cfg.SetDiskID(dev, node_name)
8316 result = self.rpc.call_blockdev_find(node_name, dev)
8318 msg = result.fail_msg
8319 if msg or not result.payload:
8321 msg = "disk not found"
8322 raise errors.OpExecError("Can't find DRBD device %s: %s" %
8325 if result.payload.is_degraded:
8326 raise errors.OpExecError("DRBD device %s is degraded!" % name)
8328 def _RemoveOldStorage(self, node_name, iv_names):
8329 for name, (_, old_lvs, _) in iv_names.iteritems():
8330 self.lu.LogInfo("Remove logical volumes for %s" % name)
8333 self.cfg.SetDiskID(lv, node_name)
8335 msg = self.rpc.call_blockdev_remove(node_name, lv).fail_msg
8337 self.lu.LogWarning("Can't remove old LV: %s" % msg,
8338 hint="remove unused LVs manually")
8340 def _ReleaseNodeLock(self, node_name):
8341 """Releases the lock for a given node."""
8342 self.lu.context.glm.release(locking.LEVEL_NODE, node_name)
8344 def _ExecDrbd8DiskOnly(self, feedback_fn):
8345 """Replace a disk on the primary or secondary for DRBD 8.
8347 The algorithm for replace is quite complicated:
8349 1. for each disk to be replaced:
8351 1. create new LVs on the target node with unique names
8352 1. detach old LVs from the drbd device
8353 1. rename old LVs to name_replaced.<time_t>
8354 1. rename new LVs to old LVs
8355 1. attach the new LVs (with the old names now) to the drbd device
8357 1. wait for sync across all devices
8359 1. for each modified disk:
8361 1. remove old LVs (which have the name name_replaces.<time_t>)
8363 Failures are not very well handled.
8368 # Step: check device activation
8369 self.lu.LogStep(1, steps_total, "Check device existence")
8370 self._CheckDisksExistence([self.other_node, self.target_node])
8371 self._CheckVolumeGroup([self.target_node, self.other_node])
8373 # Step: check other node consistency
8374 self.lu.LogStep(2, steps_total, "Check peer consistency")
8375 self._CheckDisksConsistency(self.other_node,
8376 self.other_node == self.instance.primary_node,
8379 # Step: create new storage
8380 self.lu.LogStep(3, steps_total, "Allocate new storage")
8381 iv_names = self._CreateNewStorage(self.target_node)
8383 # Step: for each lv, detach+rename*2+attach
8384 self.lu.LogStep(4, steps_total, "Changing drbd configuration")
8385 for dev, old_lvs, new_lvs in iv_names.itervalues():
8386 self.lu.LogInfo("Detaching %s drbd from local storage" % dev.iv_name)
8388 result = self.rpc.call_blockdev_removechildren(self.target_node, dev,
8390 result.Raise("Can't detach drbd from local storage on node"
8391 " %s for device %s" % (self.target_node, dev.iv_name))
8393 #cfg.Update(instance)
8395 # ok, we created the new LVs, so now we know we have the needed
8396 # storage; as such, we proceed on the target node to rename
8397 # old_lv to _old, and new_lv to old_lv; note that we rename LVs
8398 # using the assumption that logical_id == physical_id (which in
8399 # turn is the unique_id on that node)
8401 # FIXME(iustin): use a better name for the replaced LVs
8402 temp_suffix = int(time.time())
8403 ren_fn = lambda d, suff: (d.physical_id[0],
8404 d.physical_id[1] + "_replaced-%s" % suff)
8406 # Build the rename list based on what LVs exist on the node
8407 rename_old_to_new = []
8408 for to_ren in old_lvs:
8409 result = self.rpc.call_blockdev_find(self.target_node, to_ren)
8410 if not result.fail_msg and result.payload:
8412 rename_old_to_new.append((to_ren, ren_fn(to_ren, temp_suffix)))
8414 self.lu.LogInfo("Renaming the old LVs on the target node")
8415 result = self.rpc.call_blockdev_rename(self.target_node,
8417 result.Raise("Can't rename old LVs on node %s" % self.target_node)
8419 # Now we rename the new LVs to the old LVs
8420 self.lu.LogInfo("Renaming the new LVs on the target node")
8421 rename_new_to_old = [(new, old.physical_id)
8422 for old, new in zip(old_lvs, new_lvs)]
8423 result = self.rpc.call_blockdev_rename(self.target_node,
8425 result.Raise("Can't rename new LVs on node %s" % self.target_node)
8427 for old, new in zip(old_lvs, new_lvs):
8428 new.logical_id = old.logical_id
8429 self.cfg.SetDiskID(new, self.target_node)
8431 for disk in old_lvs:
8432 disk.logical_id = ren_fn(disk, temp_suffix)
8433 self.cfg.SetDiskID(disk, self.target_node)
8435 # Now that the new lvs have the old name, we can add them to the device
8436 self.lu.LogInfo("Adding new mirror component on %s" % self.target_node)
8437 result = self.rpc.call_blockdev_addchildren(self.target_node, dev,
8439 msg = result.fail_msg
8441 for new_lv in new_lvs:
8442 msg2 = self.rpc.call_blockdev_remove(self.target_node,
8445 self.lu.LogWarning("Can't rollback device %s: %s", dev, msg2,
8446 hint=("cleanup manually the unused logical"
8448 raise errors.OpExecError("Can't add local storage to drbd: %s" % msg)
8450 dev.children = new_lvs
8452 self.cfg.Update(self.instance, feedback_fn)
8455 if self.early_release:
8456 self.lu.LogStep(cstep, steps_total, "Removing old storage")
8458 self._RemoveOldStorage(self.target_node, iv_names)
8459 # WARNING: we release both node locks here, do not do other RPCs
8460 # than WaitForSync to the primary node
8461 self._ReleaseNodeLock([self.target_node, self.other_node])
8464 # This can fail as the old devices are degraded and _WaitForSync
8465 # does a combined result over all disks, so we don't check its return value
8466 self.lu.LogStep(cstep, steps_total, "Sync devices")
8468 _WaitForSync(self.lu, self.instance)
8470 # Check all devices manually
8471 self._CheckDevices(self.instance.primary_node, iv_names)
8473 # Step: remove old storage
8474 if not self.early_release:
8475 self.lu.LogStep(cstep, steps_total, "Removing old storage")
8477 self._RemoveOldStorage(self.target_node, iv_names)
8479 def _ExecDrbd8Secondary(self, feedback_fn):
8480 """Replace the secondary node for DRBD 8.
8482 The algorithm for replace is quite complicated:
8483 - for all disks of the instance:
8484 - create new LVs on the new node with same names
8485 - shutdown the drbd device on the old secondary
8486 - disconnect the drbd network on the primary
8487 - create the drbd device on the new secondary
8488 - network attach the drbd on the primary, using an artifice:
8489 the drbd code for Attach() will connect to the network if it
8490 finds a device which is connected to the good local disks but
8492 - wait for sync across all devices
8493 - remove all disks from the old secondary
8495 Failures are not very well handled.
8500 # Step: check device activation
8501 self.lu.LogStep(1, steps_total, "Check device existence")
8502 self._CheckDisksExistence([self.instance.primary_node])
8503 self._CheckVolumeGroup([self.instance.primary_node])
8505 # Step: check other node consistency
8506 self.lu.LogStep(2, steps_total, "Check peer consistency")
8507 self._CheckDisksConsistency(self.instance.primary_node, True, True)
8509 # Step: create new storage
8510 self.lu.LogStep(3, steps_total, "Allocate new storage")
8511 for idx, dev in enumerate(self.instance.disks):
8512 self.lu.LogInfo("Adding new local storage on %s for disk/%d" %
8513 (self.new_node, idx))
8514 # we pass force_create=True to force LVM creation
8515 for new_lv in dev.children:
8516 _CreateBlockDev(self.lu, self.new_node, self.instance, new_lv, True,
8517 _GetInstanceInfoText(self.instance), False)
8519 # Step 4: dbrd minors and drbd setups changes
8520 # after this, we must manually remove the drbd minors on both the
8521 # error and the success paths
8522 self.lu.LogStep(4, steps_total, "Changing drbd configuration")
8523 minors = self.cfg.AllocateDRBDMinor([self.new_node
8524 for dev in self.instance.disks],
8526 logging.debug("Allocated minors %r", minors)
8529 for idx, (dev, new_minor) in enumerate(zip(self.instance.disks, minors)):
8530 self.lu.LogInfo("activating a new drbd on %s for disk/%d" %
8531 (self.new_node, idx))
8532 # create new devices on new_node; note that we create two IDs:
8533 # one without port, so the drbd will be activated without
8534 # networking information on the new node at this stage, and one
8535 # with network, for the latter activation in step 4
8536 (o_node1, o_node2, o_port, o_minor1, o_minor2, o_secret) = dev.logical_id
8537 if self.instance.primary_node == o_node1:
8540 assert self.instance.primary_node == o_node2, "Three-node instance?"
8543 new_alone_id = (self.instance.primary_node, self.new_node, None,
8544 p_minor, new_minor, o_secret)
8545 new_net_id = (self.instance.primary_node, self.new_node, o_port,
8546 p_minor, new_minor, o_secret)
8548 iv_names[idx] = (dev, dev.children, new_net_id)
8549 logging.debug("Allocated new_minor: %s, new_logical_id: %s", new_minor,
8551 new_drbd = objects.Disk(dev_type=constants.LD_DRBD8,
8552 logical_id=new_alone_id,
8553 children=dev.children,
8556 _CreateSingleBlockDev(self.lu, self.new_node, self.instance, new_drbd,
8557 _GetInstanceInfoText(self.instance), False)
8558 except errors.GenericError:
8559 self.cfg.ReleaseDRBDMinors(self.instance.name)
8562 # We have new devices, shutdown the drbd on the old secondary
8563 for idx, dev in enumerate(self.instance.disks):
8564 self.lu.LogInfo("Shutting down drbd for disk/%d on old node" % idx)
8565 self.cfg.SetDiskID(dev, self.target_node)
8566 msg = self.rpc.call_blockdev_shutdown(self.target_node, dev).fail_msg
8568 self.lu.LogWarning("Failed to shutdown drbd for disk/%d on old"
8569 "node: %s" % (idx, msg),
8570 hint=("Please cleanup this device manually as"
8571 " soon as possible"))
8573 self.lu.LogInfo("Detaching primary drbds from the network (=> standalone)")
8574 result = self.rpc.call_drbd_disconnect_net([self.instance.primary_node],
8575 self.node_secondary_ip,
8576 self.instance.disks)\
8577 [self.instance.primary_node]
8579 msg = result.fail_msg
8581 # detaches didn't succeed (unlikely)
8582 self.cfg.ReleaseDRBDMinors(self.instance.name)
8583 raise errors.OpExecError("Can't detach the disks from the network on"
8584 " old node: %s" % (msg,))
8586 # if we managed to detach at least one, we update all the disks of
8587 # the instance to point to the new secondary
8588 self.lu.LogInfo("Updating instance configuration")
8589 for dev, _, new_logical_id in iv_names.itervalues():
8590 dev.logical_id = new_logical_id
8591 self.cfg.SetDiskID(dev, self.instance.primary_node)
8593 self.cfg.Update(self.instance, feedback_fn)
8595 # and now perform the drbd attach
8596 self.lu.LogInfo("Attaching primary drbds to new secondary"
8597 " (standalone => connected)")
8598 result = self.rpc.call_drbd_attach_net([self.instance.primary_node,
8600 self.node_secondary_ip,
8601 self.instance.disks,
8604 for to_node, to_result in result.items():
8605 msg = to_result.fail_msg
8607 self.lu.LogWarning("Can't attach drbd disks on node %s: %s",
8609 hint=("please do a gnt-instance info to see the"
8610 " status of disks"))
8612 if self.early_release:
8613 self.lu.LogStep(cstep, steps_total, "Removing old storage")
8615 self._RemoveOldStorage(self.target_node, iv_names)
8616 # WARNING: we release all node locks here, do not do other RPCs
8617 # than WaitForSync to the primary node
8618 self._ReleaseNodeLock([self.instance.primary_node,
8623 # This can fail as the old devices are degraded and _WaitForSync
8624 # does a combined result over all disks, so we don't check its return value
8625 self.lu.LogStep(cstep, steps_total, "Sync devices")
8627 _WaitForSync(self.lu, self.instance)
8629 # Check all devices manually
8630 self._CheckDevices(self.instance.primary_node, iv_names)
8632 # Step: remove old storage
8633 if not self.early_release:
8634 self.lu.LogStep(cstep, steps_total, "Removing old storage")
8635 self._RemoveOldStorage(self.target_node, iv_names)
8638 class LURepairNodeStorage(NoHooksLU):
8639 """Repairs the volume group on a node.
8644 def CheckArguments(self):
8645 self.op.node_name = _ExpandNodeName(self.cfg, self.op.node_name)
8647 storage_type = self.op.storage_type
8649 if (constants.SO_FIX_CONSISTENCY not in
8650 constants.VALID_STORAGE_OPERATIONS.get(storage_type, [])):
8651 raise errors.OpPrereqError("Storage units of type '%s' can not be"
8652 " repaired" % storage_type,
8655 def ExpandNames(self):
8656 self.needed_locks = {
8657 locking.LEVEL_NODE: [self.op.node_name],
8660 def _CheckFaultyDisks(self, instance, node_name):
8661 """Ensure faulty disks abort the opcode or at least warn."""
8663 if _FindFaultyInstanceDisks(self.cfg, self.rpc, instance,
8665 raise errors.OpPrereqError("Instance '%s' has faulty disks on"
8666 " node '%s'" % (instance.name, node_name),
8668 except errors.OpPrereqError, err:
8669 if self.op.ignore_consistency:
8670 self.proc.LogWarning(str(err.args[0]))
8674 def CheckPrereq(self):
8675 """Check prerequisites.
8678 # Check whether any instance on this node has faulty disks
8679 for inst in _GetNodeInstances(self.cfg, self.op.node_name):
8680 if not inst.admin_up:
8682 check_nodes = set(inst.all_nodes)
8683 check_nodes.discard(self.op.node_name)
8684 for inst_node_name in check_nodes:
8685 self._CheckFaultyDisks(inst, inst_node_name)
8687 def Exec(self, feedback_fn):
8688 feedback_fn("Repairing storage unit '%s' on %s ..." %
8689 (self.op.name, self.op.node_name))
8691 st_args = _GetStorageTypeArgs(self.cfg, self.op.storage_type)
8692 result = self.rpc.call_storage_execute(self.op.node_name,
8693 self.op.storage_type, st_args,
8695 constants.SO_FIX_CONSISTENCY)
8696 result.Raise("Failed to repair storage unit '%s' on %s" %
8697 (self.op.name, self.op.node_name))
8700 class LUNodeEvacStrategy(NoHooksLU):
8701 """Computes the node evacuation strategy.
8706 def CheckArguments(self):
8707 _CheckIAllocatorOrNode(self, "iallocator", "remote_node")
8709 def ExpandNames(self):
8710 self.op.nodes = _GetWantedNodes(self, self.op.nodes)
8711 self.needed_locks = locks = {}
8712 if self.op.remote_node is None:
8713 locks[locking.LEVEL_NODE] = locking.ALL_SET
8715 self.op.remote_node = _ExpandNodeName(self.cfg, self.op.remote_node)
8716 locks[locking.LEVEL_NODE] = self.op.nodes + [self.op.remote_node]
8718 def Exec(self, feedback_fn):
8719 if self.op.remote_node is not None:
8721 for node in self.op.nodes:
8722 instances.extend(_GetNodeSecondaryInstances(self.cfg, node))
8725 if i.primary_node == self.op.remote_node:
8726 raise errors.OpPrereqError("Node %s is the primary node of"
8727 " instance %s, cannot use it as"
8729 (self.op.remote_node, i.name),
8731 result.append([i.name, self.op.remote_node])
8733 ial = IAllocator(self.cfg, self.rpc,
8734 mode=constants.IALLOCATOR_MODE_MEVAC,
8735 evac_nodes=self.op.nodes)
8736 ial.Run(self.op.iallocator, validate=True)
8738 raise errors.OpExecError("No valid evacuation solution: %s" % ial.info,
8744 class LUInstanceGrowDisk(LogicalUnit):
8745 """Grow a disk of an instance.
8749 HTYPE = constants.HTYPE_INSTANCE
8752 def ExpandNames(self):
8753 self._ExpandAndLockInstance()
8754 self.needed_locks[locking.LEVEL_NODE] = []
8755 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
8757 def DeclareLocks(self, level):
8758 if level == locking.LEVEL_NODE:
8759 self._LockInstancesNodes()
8761 def BuildHooksEnv(self):
8764 This runs on the master, the primary and all the secondaries.
8768 "DISK": self.op.disk,
8769 "AMOUNT": self.op.amount,
8771 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
8772 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
8775 def CheckPrereq(self):
8776 """Check prerequisites.
8778 This checks that the instance is in the cluster.
8781 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
8782 assert instance is not None, \
8783 "Cannot retrieve locked instance %s" % self.op.instance_name
8784 nodenames = list(instance.all_nodes)
8785 for node in nodenames:
8786 _CheckNodeOnline(self, node)
8788 self.instance = instance
8790 if instance.disk_template not in constants.DTS_GROWABLE:
8791 raise errors.OpPrereqError("Instance's disk layout does not support"
8792 " growing.", errors.ECODE_INVAL)
8794 self.disk = instance.FindDisk(self.op.disk)
8796 if instance.disk_template != constants.DT_FILE:
8797 # TODO: check the free disk space for file, when that feature
8799 _CheckNodesFreeDiskPerVG(self, nodenames,
8800 self.disk.ComputeGrowth(self.op.amount))
8802 def Exec(self, feedback_fn):
8803 """Execute disk grow.
8806 instance = self.instance
8809 disks_ok, _ = _AssembleInstanceDisks(self, self.instance, disks=[disk])
8811 raise errors.OpExecError("Cannot activate block device to grow")
8813 for node in instance.all_nodes:
8814 self.cfg.SetDiskID(disk, node)
8815 result = self.rpc.call_blockdev_grow(node, disk, self.op.amount)
8816 result.Raise("Grow request failed to node %s" % node)
8818 # TODO: Rewrite code to work properly
8819 # DRBD goes into sync mode for a short amount of time after executing the
8820 # "resize" command. DRBD 8.x below version 8.0.13 contains a bug whereby
8821 # calling "resize" in sync mode fails. Sleeping for a short amount of
8822 # time is a work-around.
8825 disk.RecordGrow(self.op.amount)
8826 self.cfg.Update(instance, feedback_fn)
8827 if self.op.wait_for_sync:
8828 disk_abort = not _WaitForSync(self, instance, disks=[disk])
8830 self.proc.LogWarning("Warning: disk sync-ing has not returned a good"
8831 " status.\nPlease check the instance.")
8832 if not instance.admin_up:
8833 _SafeShutdownInstanceDisks(self, instance, disks=[disk])
8834 elif not instance.admin_up:
8835 self.proc.LogWarning("Not shutting down the disk even if the instance is"
8836 " not supposed to be running because no wait for"
8837 " sync mode was requested.")
8840 class LUInstanceQueryData(NoHooksLU):
8841 """Query runtime instance data.
8846 def ExpandNames(self):
8847 self.needed_locks = {}
8849 # Use locking if requested or when non-static information is wanted
8850 if not (self.op.static or self.op.use_locking):
8851 self.LogWarning("Non-static data requested, locks need to be acquired")
8852 self.op.use_locking = True
8854 if self.op.instances or not self.op.use_locking:
8855 # Expand instance names right here
8856 self.wanted_names = _GetWantedInstances(self, self.op.instances)
8858 # Will use acquired locks
8859 self.wanted_names = None
8861 if self.op.use_locking:
8862 self.share_locks = dict.fromkeys(locking.LEVELS, 1)
8864 if self.wanted_names is None:
8865 self.needed_locks[locking.LEVEL_INSTANCE] = locking.ALL_SET
8867 self.needed_locks[locking.LEVEL_INSTANCE] = self.wanted_names
8869 self.needed_locks[locking.LEVEL_NODE] = []
8870 self.share_locks = dict.fromkeys(locking.LEVELS, 1)
8871 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
8873 def DeclareLocks(self, level):
8874 if self.op.use_locking and level == locking.LEVEL_NODE:
8875 self._LockInstancesNodes()
8877 def CheckPrereq(self):
8878 """Check prerequisites.
8880 This only checks the optional instance list against the existing names.
8883 if self.wanted_names is None:
8884 assert self.op.use_locking, "Locking was not used"
8885 self.wanted_names = self.acquired_locks[locking.LEVEL_INSTANCE]
8887 self.wanted_instances = [self.cfg.GetInstanceInfo(name)
8888 for name in self.wanted_names]
8890 def _ComputeBlockdevStatus(self, node, instance_name, dev):
8891 """Returns the status of a block device
8894 if self.op.static or not node:
8897 self.cfg.SetDiskID(dev, node)
8899 result = self.rpc.call_blockdev_find(node, dev)
8903 result.Raise("Can't compute disk status for %s" % instance_name)
8905 status = result.payload
8909 return (status.dev_path, status.major, status.minor,
8910 status.sync_percent, status.estimated_time,
8911 status.is_degraded, status.ldisk_status)
8913 def _ComputeDiskStatus(self, instance, snode, dev):
8914 """Compute block device status.
8917 if dev.dev_type in constants.LDS_DRBD:
8918 # we change the snode then (otherwise we use the one passed in)
8919 if dev.logical_id[0] == instance.primary_node:
8920 snode = dev.logical_id[1]
8922 snode = dev.logical_id[0]
8924 dev_pstatus = self._ComputeBlockdevStatus(instance.primary_node,
8926 dev_sstatus = self._ComputeBlockdevStatus(snode, instance.name, dev)
8929 dev_children = [self._ComputeDiskStatus(instance, snode, child)
8930 for child in dev.children]
8935 "iv_name": dev.iv_name,
8936 "dev_type": dev.dev_type,
8937 "logical_id": dev.logical_id,
8938 "physical_id": dev.physical_id,
8939 "pstatus": dev_pstatus,
8940 "sstatus": dev_sstatus,
8941 "children": dev_children,
8946 def Exec(self, feedback_fn):
8947 """Gather and return data"""
8950 cluster = self.cfg.GetClusterInfo()
8952 for instance in self.wanted_instances:
8953 if not self.op.static:
8954 remote_info = self.rpc.call_instance_info(instance.primary_node,
8956 instance.hypervisor)
8957 remote_info.Raise("Error checking node %s" % instance.primary_node)
8958 remote_info = remote_info.payload
8959 if remote_info and "state" in remote_info:
8962 remote_state = "down"
8965 if instance.admin_up:
8968 config_state = "down"
8970 disks = [self._ComputeDiskStatus(instance, None, device)
8971 for device in instance.disks]
8973 result[instance.name] = {
8974 "name": instance.name,
8975 "config_state": config_state,
8976 "run_state": remote_state,
8977 "pnode": instance.primary_node,
8978 "snodes": instance.secondary_nodes,
8980 # this happens to be the same format used for hooks
8981 "nics": _NICListToTuple(self, instance.nics),
8982 "disk_template": instance.disk_template,
8984 "hypervisor": instance.hypervisor,
8985 "network_port": instance.network_port,
8986 "hv_instance": instance.hvparams,
8987 "hv_actual": cluster.FillHV(instance, skip_globals=True),
8988 "be_instance": instance.beparams,
8989 "be_actual": cluster.FillBE(instance),
8990 "os_instance": instance.osparams,
8991 "os_actual": cluster.SimpleFillOS(instance.os, instance.osparams),
8992 "serial_no": instance.serial_no,
8993 "mtime": instance.mtime,
8994 "ctime": instance.ctime,
8995 "uuid": instance.uuid,
9001 class LUInstanceSetParams(LogicalUnit):
9002 """Modifies an instances's parameters.
9005 HPATH = "instance-modify"
9006 HTYPE = constants.HTYPE_INSTANCE
9009 def CheckArguments(self):
9010 if not (self.op.nics or self.op.disks or self.op.disk_template or
9011 self.op.hvparams or self.op.beparams or self.op.os_name):
9012 raise errors.OpPrereqError("No changes submitted", errors.ECODE_INVAL)
9014 if self.op.hvparams:
9015 _CheckGlobalHvParams(self.op.hvparams)
9019 for disk_op, disk_dict in self.op.disks:
9020 utils.ForceDictType(disk_dict, constants.IDISK_PARAMS_TYPES)
9021 if disk_op == constants.DDM_REMOVE:
9024 elif disk_op == constants.DDM_ADD:
9027 if not isinstance(disk_op, int):
9028 raise errors.OpPrereqError("Invalid disk index", errors.ECODE_INVAL)
9029 if not isinstance(disk_dict, dict):
9030 msg = "Invalid disk value: expected dict, got '%s'" % disk_dict
9031 raise errors.OpPrereqError(msg, errors.ECODE_INVAL)
9033 if disk_op == constants.DDM_ADD:
9034 mode = disk_dict.setdefault('mode', constants.DISK_RDWR)
9035 if mode not in constants.DISK_ACCESS_SET:
9036 raise errors.OpPrereqError("Invalid disk access mode '%s'" % mode,
9038 size = disk_dict.get('size', None)
9040 raise errors.OpPrereqError("Required disk parameter size missing",
9044 except (TypeError, ValueError), err:
9045 raise errors.OpPrereqError("Invalid disk size parameter: %s" %
9046 str(err), errors.ECODE_INVAL)
9047 disk_dict['size'] = size
9049 # modification of disk
9050 if 'size' in disk_dict:
9051 raise errors.OpPrereqError("Disk size change not possible, use"
9052 " grow-disk", errors.ECODE_INVAL)
9054 if disk_addremove > 1:
9055 raise errors.OpPrereqError("Only one disk add or remove operation"
9056 " supported at a time", errors.ECODE_INVAL)
9058 if self.op.disks and self.op.disk_template is not None:
9059 raise errors.OpPrereqError("Disk template conversion and other disk"
9060 " changes not supported at the same time",
9063 if (self.op.disk_template and
9064 self.op.disk_template in constants.DTS_NET_MIRROR and
9065 self.op.remote_node is None):
9066 raise errors.OpPrereqError("Changing the disk template to a mirrored"
9067 " one requires specifying a secondary node",
9072 for nic_op, nic_dict in self.op.nics:
9073 utils.ForceDictType(nic_dict, constants.INIC_PARAMS_TYPES)
9074 if nic_op == constants.DDM_REMOVE:
9077 elif nic_op == constants.DDM_ADD:
9080 if not isinstance(nic_op, int):
9081 raise errors.OpPrereqError("Invalid nic index", errors.ECODE_INVAL)
9082 if not isinstance(nic_dict, dict):
9083 msg = "Invalid nic value: expected dict, got '%s'" % nic_dict
9084 raise errors.OpPrereqError(msg, errors.ECODE_INVAL)
9086 # nic_dict should be a dict
9087 nic_ip = nic_dict.get('ip', None)
9088 if nic_ip is not None:
9089 if nic_ip.lower() == constants.VALUE_NONE:
9090 nic_dict['ip'] = None
9092 if not netutils.IPAddress.IsValid(nic_ip):
9093 raise errors.OpPrereqError("Invalid IP address '%s'" % nic_ip,
9096 nic_bridge = nic_dict.get('bridge', None)
9097 nic_link = nic_dict.get('link', None)
9098 if nic_bridge and nic_link:
9099 raise errors.OpPrereqError("Cannot pass 'bridge' and 'link'"
9100 " at the same time", errors.ECODE_INVAL)
9101 elif nic_bridge and nic_bridge.lower() == constants.VALUE_NONE:
9102 nic_dict['bridge'] = None
9103 elif nic_link and nic_link.lower() == constants.VALUE_NONE:
9104 nic_dict['link'] = None
9106 if nic_op == constants.DDM_ADD:
9107 nic_mac = nic_dict.get('mac', None)
9109 nic_dict['mac'] = constants.VALUE_AUTO
9111 if 'mac' in nic_dict:
9112 nic_mac = nic_dict['mac']
9113 if nic_mac not in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
9114 nic_mac = utils.NormalizeAndValidateMac(nic_mac)
9116 if nic_op != constants.DDM_ADD and nic_mac == constants.VALUE_AUTO:
9117 raise errors.OpPrereqError("'auto' is not a valid MAC address when"
9118 " modifying an existing nic",
9121 if nic_addremove > 1:
9122 raise errors.OpPrereqError("Only one NIC add or remove operation"
9123 " supported at a time", errors.ECODE_INVAL)
9125 def ExpandNames(self):
9126 self._ExpandAndLockInstance()
9127 self.needed_locks[locking.LEVEL_NODE] = []
9128 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
9130 def DeclareLocks(self, level):
9131 if level == locking.LEVEL_NODE:
9132 self._LockInstancesNodes()
9133 if self.op.disk_template and self.op.remote_node:
9134 self.op.remote_node = _ExpandNodeName(self.cfg, self.op.remote_node)
9135 self.needed_locks[locking.LEVEL_NODE].append(self.op.remote_node)
9137 def BuildHooksEnv(self):
9140 This runs on the master, primary and secondaries.
9144 if constants.BE_MEMORY in self.be_new:
9145 args['memory'] = self.be_new[constants.BE_MEMORY]
9146 if constants.BE_VCPUS in self.be_new:
9147 args['vcpus'] = self.be_new[constants.BE_VCPUS]
9148 # TODO: export disk changes. Note: _BuildInstanceHookEnv* don't export disk
9149 # information at all.
9152 nic_override = dict(self.op.nics)
9153 for idx, nic in enumerate(self.instance.nics):
9154 if idx in nic_override:
9155 this_nic_override = nic_override[idx]
9157 this_nic_override = {}
9158 if 'ip' in this_nic_override:
9159 ip = this_nic_override['ip']
9162 if 'mac' in this_nic_override:
9163 mac = this_nic_override['mac']
9166 if idx in self.nic_pnew:
9167 nicparams = self.nic_pnew[idx]
9169 nicparams = self.cluster.SimpleFillNIC(nic.nicparams)
9170 mode = nicparams[constants.NIC_MODE]
9171 link = nicparams[constants.NIC_LINK]
9172 args['nics'].append((ip, mac, mode, link))
9173 if constants.DDM_ADD in nic_override:
9174 ip = nic_override[constants.DDM_ADD].get('ip', None)
9175 mac = nic_override[constants.DDM_ADD]['mac']
9176 nicparams = self.nic_pnew[constants.DDM_ADD]
9177 mode = nicparams[constants.NIC_MODE]
9178 link = nicparams[constants.NIC_LINK]
9179 args['nics'].append((ip, mac, mode, link))
9180 elif constants.DDM_REMOVE in nic_override:
9181 del args['nics'][-1]
9183 env = _BuildInstanceHookEnvByObject(self, self.instance, override=args)
9184 if self.op.disk_template:
9185 env["NEW_DISK_TEMPLATE"] = self.op.disk_template
9186 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
9189 def CheckPrereq(self):
9190 """Check prerequisites.
9192 This only checks the instance list against the existing names.
9195 # checking the new params on the primary/secondary nodes
9197 instance = self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
9198 cluster = self.cluster = self.cfg.GetClusterInfo()
9199 assert self.instance is not None, \
9200 "Cannot retrieve locked instance %s" % self.op.instance_name
9201 pnode = instance.primary_node
9202 nodelist = list(instance.all_nodes)
9205 if self.op.os_name and not self.op.force:
9206 _CheckNodeHasOS(self, instance.primary_node, self.op.os_name,
9207 self.op.force_variant)
9208 instance_os = self.op.os_name
9210 instance_os = instance.os
9212 if self.op.disk_template:
9213 if instance.disk_template == self.op.disk_template:
9214 raise errors.OpPrereqError("Instance already has disk template %s" %
9215 instance.disk_template, errors.ECODE_INVAL)
9217 if (instance.disk_template,
9218 self.op.disk_template) not in self._DISK_CONVERSIONS:
9219 raise errors.OpPrereqError("Unsupported disk template conversion from"
9220 " %s to %s" % (instance.disk_template,
9221 self.op.disk_template),
9223 _CheckInstanceDown(self, instance, "cannot change disk template")
9224 if self.op.disk_template in constants.DTS_NET_MIRROR:
9225 if self.op.remote_node == pnode:
9226 raise errors.OpPrereqError("Given new secondary node %s is the same"
9227 " as the primary node of the instance" %
9228 self.op.remote_node, errors.ECODE_STATE)
9229 _CheckNodeOnline(self, self.op.remote_node)
9230 _CheckNodeNotDrained(self, self.op.remote_node)
9231 # FIXME: here we assume that the old instance type is DT_PLAIN
9232 assert instance.disk_template == constants.DT_PLAIN
9233 disks = [{"size": d.size, "vg": d.logical_id[0]}
9234 for d in instance.disks]
9235 required = _ComputeDiskSizePerVG(self.op.disk_template, disks)
9236 _CheckNodesFreeDiskPerVG(self, [self.op.remote_node], required)
9238 # hvparams processing
9239 if self.op.hvparams:
9240 hv_type = instance.hypervisor
9241 i_hvdict = _GetUpdatedParams(instance.hvparams, self.op.hvparams)
9242 utils.ForceDictType(i_hvdict, constants.HVS_PARAMETER_TYPES)
9243 hv_new = cluster.SimpleFillHV(hv_type, instance.os, i_hvdict)
9246 hypervisor.GetHypervisor(hv_type).CheckParameterSyntax(hv_new)
9247 _CheckHVParams(self, nodelist, instance.hypervisor, hv_new)
9248 self.hv_new = hv_new # the new actual values
9249 self.hv_inst = i_hvdict # the new dict (without defaults)
9251 self.hv_new = self.hv_inst = {}
9253 # beparams processing
9254 if self.op.beparams:
9255 i_bedict = _GetUpdatedParams(instance.beparams, self.op.beparams,
9257 utils.ForceDictType(i_bedict, constants.BES_PARAMETER_TYPES)
9258 be_new = cluster.SimpleFillBE(i_bedict)
9259 self.be_new = be_new # the new actual values
9260 self.be_inst = i_bedict # the new dict (without defaults)
9262 self.be_new = self.be_inst = {}
9264 # osparams processing
9265 if self.op.osparams:
9266 i_osdict = _GetUpdatedParams(instance.osparams, self.op.osparams)
9267 _CheckOSParams(self, True, nodelist, instance_os, i_osdict)
9268 self.os_inst = i_osdict # the new dict (without defaults)
9274 if constants.BE_MEMORY in self.op.beparams and not self.op.force:
9275 mem_check_list = [pnode]
9276 if be_new[constants.BE_AUTO_BALANCE]:
9277 # either we changed auto_balance to yes or it was from before
9278 mem_check_list.extend(instance.secondary_nodes)
9279 instance_info = self.rpc.call_instance_info(pnode, instance.name,
9280 instance.hypervisor)
9281 nodeinfo = self.rpc.call_node_info(mem_check_list, None,
9282 instance.hypervisor)
9283 pninfo = nodeinfo[pnode]
9284 msg = pninfo.fail_msg
9286 # Assume the primary node is unreachable and go ahead
9287 self.warn.append("Can't get info from primary node %s: %s" %
9289 elif not isinstance(pninfo.payload.get('memory_free', None), int):
9290 self.warn.append("Node data from primary node %s doesn't contain"
9291 " free memory information" % pnode)
9292 elif instance_info.fail_msg:
9293 self.warn.append("Can't get instance runtime information: %s" %
9294 instance_info.fail_msg)
9296 if instance_info.payload:
9297 current_mem = int(instance_info.payload['memory'])
9299 # Assume instance not running
9300 # (there is a slight race condition here, but it's not very probable,
9301 # and we have no other way to check)
9303 miss_mem = (be_new[constants.BE_MEMORY] - current_mem -
9304 pninfo.payload['memory_free'])
9306 raise errors.OpPrereqError("This change will prevent the instance"
9307 " from starting, due to %d MB of memory"
9308 " missing on its primary node" % miss_mem,
9311 if be_new[constants.BE_AUTO_BALANCE]:
9312 for node, nres in nodeinfo.items():
9313 if node not in instance.secondary_nodes:
9317 self.warn.append("Can't get info from secondary node %s: %s" %
9319 elif not isinstance(nres.payload.get('memory_free', None), int):
9320 self.warn.append("Secondary node %s didn't return free"
9321 " memory information" % node)
9322 elif be_new[constants.BE_MEMORY] > nres.payload['memory_free']:
9323 self.warn.append("Not enough memory to failover instance to"
9324 " secondary node %s" % node)
9329 for nic_op, nic_dict in self.op.nics:
9330 if nic_op == constants.DDM_REMOVE:
9331 if not instance.nics:
9332 raise errors.OpPrereqError("Instance has no NICs, cannot remove",
9335 if nic_op != constants.DDM_ADD:
9337 if not instance.nics:
9338 raise errors.OpPrereqError("Invalid NIC index %s, instance has"
9339 " no NICs" % nic_op,
9341 if nic_op < 0 or nic_op >= len(instance.nics):
9342 raise errors.OpPrereqError("Invalid NIC index %s, valid values"
9344 (nic_op, len(instance.nics) - 1),
9346 old_nic_params = instance.nics[nic_op].nicparams
9347 old_nic_ip = instance.nics[nic_op].ip
9352 update_params_dict = dict([(key, nic_dict[key])
9353 for key in constants.NICS_PARAMETERS
9354 if key in nic_dict])
9356 if 'bridge' in nic_dict:
9357 update_params_dict[constants.NIC_LINK] = nic_dict['bridge']
9359 new_nic_params = _GetUpdatedParams(old_nic_params,
9361 utils.ForceDictType(new_nic_params, constants.NICS_PARAMETER_TYPES)
9362 new_filled_nic_params = cluster.SimpleFillNIC(new_nic_params)
9363 objects.NIC.CheckParameterSyntax(new_filled_nic_params)
9364 self.nic_pinst[nic_op] = new_nic_params
9365 self.nic_pnew[nic_op] = new_filled_nic_params
9366 new_nic_mode = new_filled_nic_params[constants.NIC_MODE]
9368 if new_nic_mode == constants.NIC_MODE_BRIDGED:
9369 nic_bridge = new_filled_nic_params[constants.NIC_LINK]
9370 msg = self.rpc.call_bridges_exist(pnode, [nic_bridge]).fail_msg
9372 msg = "Error checking bridges on node %s: %s" % (pnode, msg)
9374 self.warn.append(msg)
9376 raise errors.OpPrereqError(msg, errors.ECODE_ENVIRON)
9377 if new_nic_mode == constants.NIC_MODE_ROUTED:
9378 if 'ip' in nic_dict:
9379 nic_ip = nic_dict['ip']
9383 raise errors.OpPrereqError('Cannot set the nic ip to None'
9384 ' on a routed nic', errors.ECODE_INVAL)
9385 if 'mac' in nic_dict:
9386 nic_mac = nic_dict['mac']
9388 raise errors.OpPrereqError('Cannot set the nic mac to None',
9390 elif nic_mac in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
9391 # otherwise generate the mac
9392 nic_dict['mac'] = self.cfg.GenerateMAC(self.proc.GetECId())
9394 # or validate/reserve the current one
9396 self.cfg.ReserveMAC(nic_mac, self.proc.GetECId())
9397 except errors.ReservationError:
9398 raise errors.OpPrereqError("MAC address %s already in use"
9399 " in cluster" % nic_mac,
9400 errors.ECODE_NOTUNIQUE)
9403 if self.op.disks and instance.disk_template == constants.DT_DISKLESS:
9404 raise errors.OpPrereqError("Disk operations not supported for"
9405 " diskless instances",
9407 for disk_op, _ in self.op.disks:
9408 if disk_op == constants.DDM_REMOVE:
9409 if len(instance.disks) == 1:
9410 raise errors.OpPrereqError("Cannot remove the last disk of"
9411 " an instance", errors.ECODE_INVAL)
9412 _CheckInstanceDown(self, instance, "cannot remove disks")
9414 if (disk_op == constants.DDM_ADD and
9415 len(instance.disks) >= constants.MAX_DISKS):
9416 raise errors.OpPrereqError("Instance has too many disks (%d), cannot"
9417 " add more" % constants.MAX_DISKS,
9419 if disk_op not in (constants.DDM_ADD, constants.DDM_REMOVE):
9421 if disk_op < 0 or disk_op >= len(instance.disks):
9422 raise errors.OpPrereqError("Invalid disk index %s, valid values"
9424 (disk_op, len(instance.disks)),
9429 def _ConvertPlainToDrbd(self, feedback_fn):
9430 """Converts an instance from plain to drbd.
9433 feedback_fn("Converting template to drbd")
9434 instance = self.instance
9435 pnode = instance.primary_node
9436 snode = self.op.remote_node
9438 # create a fake disk info for _GenerateDiskTemplate
9439 disk_info = [{"size": d.size, "mode": d.mode} for d in instance.disks]
9440 new_disks = _GenerateDiskTemplate(self, self.op.disk_template,
9441 instance.name, pnode, [snode],
9442 disk_info, None, None, 0, feedback_fn)
9443 info = _GetInstanceInfoText(instance)
9444 feedback_fn("Creating aditional volumes...")
9445 # first, create the missing data and meta devices
9446 for disk in new_disks:
9447 # unfortunately this is... not too nice
9448 _CreateSingleBlockDev(self, pnode, instance, disk.children[1],
9450 for child in disk.children:
9451 _CreateSingleBlockDev(self, snode, instance, child, info, True)
9452 # at this stage, all new LVs have been created, we can rename the
9454 feedback_fn("Renaming original volumes...")
9455 rename_list = [(o, n.children[0].logical_id)
9456 for (o, n) in zip(instance.disks, new_disks)]
9457 result = self.rpc.call_blockdev_rename(pnode, rename_list)
9458 result.Raise("Failed to rename original LVs")
9460 feedback_fn("Initializing DRBD devices...")
9461 # all child devices are in place, we can now create the DRBD devices
9462 for disk in new_disks:
9463 for node in [pnode, snode]:
9464 f_create = node == pnode
9465 _CreateSingleBlockDev(self, node, instance, disk, info, f_create)
9467 # at this point, the instance has been modified
9468 instance.disk_template = constants.DT_DRBD8
9469 instance.disks = new_disks
9470 self.cfg.Update(instance, feedback_fn)
9472 # disks are created, waiting for sync
9473 disk_abort = not _WaitForSync(self, instance)
9475 raise errors.OpExecError("There are some degraded disks for"
9476 " this instance, please cleanup manually")
9478 def _ConvertDrbdToPlain(self, feedback_fn):
9479 """Converts an instance from drbd to plain.
9482 instance = self.instance
9483 assert len(instance.secondary_nodes) == 1
9484 pnode = instance.primary_node
9485 snode = instance.secondary_nodes[0]
9486 feedback_fn("Converting template to plain")
9488 old_disks = instance.disks
9489 new_disks = [d.children[0] for d in old_disks]
9491 # copy over size and mode
9492 for parent, child in zip(old_disks, new_disks):
9493 child.size = parent.size
9494 child.mode = parent.mode
9496 # update instance structure
9497 instance.disks = new_disks
9498 instance.disk_template = constants.DT_PLAIN
9499 self.cfg.Update(instance, feedback_fn)
9501 feedback_fn("Removing volumes on the secondary node...")
9502 for disk in old_disks:
9503 self.cfg.SetDiskID(disk, snode)
9504 msg = self.rpc.call_blockdev_remove(snode, disk).fail_msg
9506 self.LogWarning("Could not remove block device %s on node %s,"
9507 " continuing anyway: %s", disk.iv_name, snode, msg)
9509 feedback_fn("Removing unneeded volumes on the primary node...")
9510 for idx, disk in enumerate(old_disks):
9511 meta = disk.children[1]
9512 self.cfg.SetDiskID(meta, pnode)
9513 msg = self.rpc.call_blockdev_remove(pnode, meta).fail_msg
9515 self.LogWarning("Could not remove metadata for disk %d on node %s,"
9516 " continuing anyway: %s", idx, pnode, msg)
9518 def Exec(self, feedback_fn):
9519 """Modifies an instance.
9521 All parameters take effect only at the next restart of the instance.
9524 # Process here the warnings from CheckPrereq, as we don't have a
9525 # feedback_fn there.
9526 for warn in self.warn:
9527 feedback_fn("WARNING: %s" % warn)
9530 instance = self.instance
9532 for disk_op, disk_dict in self.op.disks:
9533 if disk_op == constants.DDM_REMOVE:
9534 # remove the last disk
9535 device = instance.disks.pop()
9536 device_idx = len(instance.disks)
9537 for node, disk in device.ComputeNodeTree(instance.primary_node):
9538 self.cfg.SetDiskID(disk, node)
9539 msg = self.rpc.call_blockdev_remove(node, disk).fail_msg
9541 self.LogWarning("Could not remove disk/%d on node %s: %s,"
9542 " continuing anyway", device_idx, node, msg)
9543 result.append(("disk/%d" % device_idx, "remove"))
9544 elif disk_op == constants.DDM_ADD:
9546 if instance.disk_template == constants.DT_FILE:
9547 file_driver, file_path = instance.disks[0].logical_id
9548 file_path = os.path.dirname(file_path)
9550 file_driver = file_path = None
9551 disk_idx_base = len(instance.disks)
9552 new_disk = _GenerateDiskTemplate(self,
9553 instance.disk_template,
9554 instance.name, instance.primary_node,
9555 instance.secondary_nodes,
9559 disk_idx_base, feedback_fn)[0]
9560 instance.disks.append(new_disk)
9561 info = _GetInstanceInfoText(instance)
9563 logging.info("Creating volume %s for instance %s",
9564 new_disk.iv_name, instance.name)
9565 # Note: this needs to be kept in sync with _CreateDisks
9567 for node in instance.all_nodes:
9568 f_create = node == instance.primary_node
9570 _CreateBlockDev(self, node, instance, new_disk,
9571 f_create, info, f_create)
9572 except errors.OpExecError, err:
9573 self.LogWarning("Failed to create volume %s (%s) on"
9575 new_disk.iv_name, new_disk, node, err)
9576 result.append(("disk/%d" % disk_idx_base, "add:size=%s,mode=%s" %
9577 (new_disk.size, new_disk.mode)))
9579 # change a given disk
9580 instance.disks[disk_op].mode = disk_dict['mode']
9581 result.append(("disk.mode/%d" % disk_op, disk_dict['mode']))
9583 if self.op.disk_template:
9584 r_shut = _ShutdownInstanceDisks(self, instance)
9586 raise errors.OpExecError("Cannot shutdown instance disks, unable to"
9587 " proceed with disk template conversion")
9588 mode = (instance.disk_template, self.op.disk_template)
9590 self._DISK_CONVERSIONS[mode](self, feedback_fn)
9592 self.cfg.ReleaseDRBDMinors(instance.name)
9594 result.append(("disk_template", self.op.disk_template))
9597 for nic_op, nic_dict in self.op.nics:
9598 if nic_op == constants.DDM_REMOVE:
9599 # remove the last nic
9600 del instance.nics[-1]
9601 result.append(("nic.%d" % len(instance.nics), "remove"))
9602 elif nic_op == constants.DDM_ADD:
9603 # mac and bridge should be set, by now
9604 mac = nic_dict['mac']
9605 ip = nic_dict.get('ip', None)
9606 nicparams = self.nic_pinst[constants.DDM_ADD]
9607 new_nic = objects.NIC(mac=mac, ip=ip, nicparams=nicparams)
9608 instance.nics.append(new_nic)
9609 result.append(("nic.%d" % (len(instance.nics) - 1),
9610 "add:mac=%s,ip=%s,mode=%s,link=%s" %
9611 (new_nic.mac, new_nic.ip,
9612 self.nic_pnew[constants.DDM_ADD][constants.NIC_MODE],
9613 self.nic_pnew[constants.DDM_ADD][constants.NIC_LINK]
9616 for key in 'mac', 'ip':
9618 setattr(instance.nics[nic_op], key, nic_dict[key])
9619 if nic_op in self.nic_pinst:
9620 instance.nics[nic_op].nicparams = self.nic_pinst[nic_op]
9621 for key, val in nic_dict.iteritems():
9622 result.append(("nic.%s/%d" % (key, nic_op), val))
9625 if self.op.hvparams:
9626 instance.hvparams = self.hv_inst
9627 for key, val in self.op.hvparams.iteritems():
9628 result.append(("hv/%s" % key, val))
9631 if self.op.beparams:
9632 instance.beparams = self.be_inst
9633 for key, val in self.op.beparams.iteritems():
9634 result.append(("be/%s" % key, val))
9638 instance.os = self.op.os_name
9641 if self.op.osparams:
9642 instance.osparams = self.os_inst
9643 for key, val in self.op.osparams.iteritems():
9644 result.append(("os/%s" % key, val))
9646 self.cfg.Update(instance, feedback_fn)
9650 _DISK_CONVERSIONS = {
9651 (constants.DT_PLAIN, constants.DT_DRBD8): _ConvertPlainToDrbd,
9652 (constants.DT_DRBD8, constants.DT_PLAIN): _ConvertDrbdToPlain,
9656 class LUBackupQuery(NoHooksLU):
9657 """Query the exports list
9662 def ExpandNames(self):
9663 self.needed_locks = {}
9664 self.share_locks[locking.LEVEL_NODE] = 1
9665 if not self.op.nodes:
9666 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
9668 self.needed_locks[locking.LEVEL_NODE] = \
9669 _GetWantedNodes(self, self.op.nodes)
9671 def Exec(self, feedback_fn):
9672 """Compute the list of all the exported system images.
9675 @return: a dictionary with the structure node->(export-list)
9676 where export-list is a list of the instances exported on
9680 self.nodes = self.acquired_locks[locking.LEVEL_NODE]
9681 rpcresult = self.rpc.call_export_list(self.nodes)
9683 for node in rpcresult:
9684 if rpcresult[node].fail_msg:
9685 result[node] = False
9687 result[node] = rpcresult[node].payload
9692 class LUBackupPrepare(NoHooksLU):
9693 """Prepares an instance for an export and returns useful information.
9698 def ExpandNames(self):
9699 self._ExpandAndLockInstance()
9701 def CheckPrereq(self):
9702 """Check prerequisites.
9705 instance_name = self.op.instance_name
9707 self.instance = self.cfg.GetInstanceInfo(instance_name)
9708 assert self.instance is not None, \
9709 "Cannot retrieve locked instance %s" % self.op.instance_name
9710 _CheckNodeOnline(self, self.instance.primary_node)
9712 self._cds = _GetClusterDomainSecret()
9714 def Exec(self, feedback_fn):
9715 """Prepares an instance for an export.
9718 instance = self.instance
9720 if self.op.mode == constants.EXPORT_MODE_REMOTE:
9721 salt = utils.GenerateSecret(8)
9723 feedback_fn("Generating X509 certificate on %s" % instance.primary_node)
9724 result = self.rpc.call_x509_cert_create(instance.primary_node,
9725 constants.RIE_CERT_VALIDITY)
9726 result.Raise("Can't create X509 key and certificate on %s" % result.node)
9728 (name, cert_pem) = result.payload
9730 cert = OpenSSL.crypto.load_certificate(OpenSSL.crypto.FILETYPE_PEM,
9734 "handshake": masterd.instance.ComputeRemoteExportHandshake(self._cds),
9735 "x509_key_name": (name, utils.Sha1Hmac(self._cds, name, salt=salt),
9737 "x509_ca": utils.SignX509Certificate(cert, self._cds, salt),
9743 class LUBackupExport(LogicalUnit):
9744 """Export an instance to an image in the cluster.
9747 HPATH = "instance-export"
9748 HTYPE = constants.HTYPE_INSTANCE
9751 def CheckArguments(self):
9752 """Check the arguments.
9755 self.x509_key_name = self.op.x509_key_name
9756 self.dest_x509_ca_pem = self.op.destination_x509_ca
9758 if self.op.mode == constants.EXPORT_MODE_REMOTE:
9759 if not self.x509_key_name:
9760 raise errors.OpPrereqError("Missing X509 key name for encryption",
9763 if not self.dest_x509_ca_pem:
9764 raise errors.OpPrereqError("Missing destination X509 CA",
9767 def ExpandNames(self):
9768 self._ExpandAndLockInstance()
9770 # Lock all nodes for local exports
9771 if self.op.mode == constants.EXPORT_MODE_LOCAL:
9772 # FIXME: lock only instance primary and destination node
9774 # Sad but true, for now we have do lock all nodes, as we don't know where
9775 # the previous export might be, and in this LU we search for it and
9776 # remove it from its current node. In the future we could fix this by:
9777 # - making a tasklet to search (share-lock all), then create the
9778 # new one, then one to remove, after
9779 # - removing the removal operation altogether
9780 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
9782 def DeclareLocks(self, level):
9783 """Last minute lock declaration."""
9784 # All nodes are locked anyway, so nothing to do here.
9786 def BuildHooksEnv(self):
9789 This will run on the master, primary node and target node.
9793 "EXPORT_MODE": self.op.mode,
9794 "EXPORT_NODE": self.op.target_node,
9795 "EXPORT_DO_SHUTDOWN": self.op.shutdown,
9796 "SHUTDOWN_TIMEOUT": self.op.shutdown_timeout,
9797 # TODO: Generic function for boolean env variables
9798 "REMOVE_INSTANCE": str(bool(self.op.remove_instance)),
9801 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
9803 nl = [self.cfg.GetMasterNode(), self.instance.primary_node]
9805 if self.op.mode == constants.EXPORT_MODE_LOCAL:
9806 nl.append(self.op.target_node)
9810 def CheckPrereq(self):
9811 """Check prerequisites.
9813 This checks that the instance and node names are valid.
9816 instance_name = self.op.instance_name
9818 self.instance = self.cfg.GetInstanceInfo(instance_name)
9819 assert self.instance is not None, \
9820 "Cannot retrieve locked instance %s" % self.op.instance_name
9821 _CheckNodeOnline(self, self.instance.primary_node)
9823 if (self.op.remove_instance and self.instance.admin_up and
9824 not self.op.shutdown):
9825 raise errors.OpPrereqError("Can not remove instance without shutting it"
9828 if self.op.mode == constants.EXPORT_MODE_LOCAL:
9829 self.op.target_node = _ExpandNodeName(self.cfg, self.op.target_node)
9830 self.dst_node = self.cfg.GetNodeInfo(self.op.target_node)
9831 assert self.dst_node is not None
9833 _CheckNodeOnline(self, self.dst_node.name)
9834 _CheckNodeNotDrained(self, self.dst_node.name)
9837 self.dest_disk_info = None
9838 self.dest_x509_ca = None
9840 elif self.op.mode == constants.EXPORT_MODE_REMOTE:
9841 self.dst_node = None
9843 if len(self.op.target_node) != len(self.instance.disks):
9844 raise errors.OpPrereqError(("Received destination information for %s"
9845 " disks, but instance %s has %s disks") %
9846 (len(self.op.target_node), instance_name,
9847 len(self.instance.disks)),
9850 cds = _GetClusterDomainSecret()
9852 # Check X509 key name
9854 (key_name, hmac_digest, hmac_salt) = self.x509_key_name
9855 except (TypeError, ValueError), err:
9856 raise errors.OpPrereqError("Invalid data for X509 key name: %s" % err)
9858 if not utils.VerifySha1Hmac(cds, key_name, hmac_digest, salt=hmac_salt):
9859 raise errors.OpPrereqError("HMAC for X509 key name is wrong",
9862 # Load and verify CA
9864 (cert, _) = utils.LoadSignedX509Certificate(self.dest_x509_ca_pem, cds)
9865 except OpenSSL.crypto.Error, err:
9866 raise errors.OpPrereqError("Unable to load destination X509 CA (%s)" %
9867 (err, ), errors.ECODE_INVAL)
9869 (errcode, msg) = utils.VerifyX509Certificate(cert, None, None)
9870 if errcode is not None:
9871 raise errors.OpPrereqError("Invalid destination X509 CA (%s)" %
9872 (msg, ), errors.ECODE_INVAL)
9874 self.dest_x509_ca = cert
9876 # Verify target information
9878 for idx, disk_data in enumerate(self.op.target_node):
9880 (host, port, magic) = \
9881 masterd.instance.CheckRemoteExportDiskInfo(cds, idx, disk_data)
9882 except errors.GenericError, err:
9883 raise errors.OpPrereqError("Target info for disk %s: %s" %
9884 (idx, err), errors.ECODE_INVAL)
9886 disk_info.append((host, port, magic))
9888 assert len(disk_info) == len(self.op.target_node)
9889 self.dest_disk_info = disk_info
9892 raise errors.ProgrammerError("Unhandled export mode %r" %
9895 # instance disk type verification
9896 # TODO: Implement export support for file-based disks
9897 for disk in self.instance.disks:
9898 if disk.dev_type == constants.LD_FILE:
9899 raise errors.OpPrereqError("Export not supported for instances with"
9900 " file-based disks", errors.ECODE_INVAL)
9902 def _CleanupExports(self, feedback_fn):
9903 """Removes exports of current instance from all other nodes.
9905 If an instance in a cluster with nodes A..D was exported to node C, its
9906 exports will be removed from the nodes A, B and D.
9909 assert self.op.mode != constants.EXPORT_MODE_REMOTE
9911 nodelist = self.cfg.GetNodeList()
9912 nodelist.remove(self.dst_node.name)
9914 # on one-node clusters nodelist will be empty after the removal
9915 # if we proceed the backup would be removed because OpBackupQuery
9916 # substitutes an empty list with the full cluster node list.
9917 iname = self.instance.name
9919 feedback_fn("Removing old exports for instance %s" % iname)
9920 exportlist = self.rpc.call_export_list(nodelist)
9921 for node in exportlist:
9922 if exportlist[node].fail_msg:
9924 if iname in exportlist[node].payload:
9925 msg = self.rpc.call_export_remove(node, iname).fail_msg
9927 self.LogWarning("Could not remove older export for instance %s"
9928 " on node %s: %s", iname, node, msg)
9930 def Exec(self, feedback_fn):
9931 """Export an instance to an image in the cluster.
9934 assert self.op.mode in constants.EXPORT_MODES
9936 instance = self.instance
9937 src_node = instance.primary_node
9939 if self.op.shutdown:
9940 # shutdown the instance, but not the disks
9941 feedback_fn("Shutting down instance %s" % instance.name)
9942 result = self.rpc.call_instance_shutdown(src_node, instance,
9943 self.op.shutdown_timeout)
9944 # TODO: Maybe ignore failures if ignore_remove_failures is set
9945 result.Raise("Could not shutdown instance %s on"
9946 " node %s" % (instance.name, src_node))
9948 # set the disks ID correctly since call_instance_start needs the
9949 # correct drbd minor to create the symlinks
9950 for disk in instance.disks:
9951 self.cfg.SetDiskID(disk, src_node)
9953 activate_disks = (not instance.admin_up)
9956 # Activate the instance disks if we'exporting a stopped instance
9957 feedback_fn("Activating disks for %s" % instance.name)
9958 _StartInstanceDisks(self, instance, None)
9961 helper = masterd.instance.ExportInstanceHelper(self, feedback_fn,
9964 helper.CreateSnapshots()
9966 if (self.op.shutdown and instance.admin_up and
9967 not self.op.remove_instance):
9968 assert not activate_disks
9969 feedback_fn("Starting instance %s" % instance.name)
9970 result = self.rpc.call_instance_start(src_node, instance, None, None)
9971 msg = result.fail_msg
9973 feedback_fn("Failed to start instance: %s" % msg)
9974 _ShutdownInstanceDisks(self, instance)
9975 raise errors.OpExecError("Could not start instance: %s" % msg)
9977 if self.op.mode == constants.EXPORT_MODE_LOCAL:
9978 (fin_resu, dresults) = helper.LocalExport(self.dst_node)
9979 elif self.op.mode == constants.EXPORT_MODE_REMOTE:
9980 connect_timeout = constants.RIE_CONNECT_TIMEOUT
9981 timeouts = masterd.instance.ImportExportTimeouts(connect_timeout)
9983 (key_name, _, _) = self.x509_key_name
9986 OpenSSL.crypto.dump_certificate(OpenSSL.crypto.FILETYPE_PEM,
9989 (fin_resu, dresults) = helper.RemoteExport(self.dest_disk_info,
9990 key_name, dest_ca_pem,
9995 # Check for backwards compatibility
9996 assert len(dresults) == len(instance.disks)
9997 assert compat.all(isinstance(i, bool) for i in dresults), \
9998 "Not all results are boolean: %r" % dresults
10002 feedback_fn("Deactivating disks for %s" % instance.name)
10003 _ShutdownInstanceDisks(self, instance)
10005 if not (compat.all(dresults) and fin_resu):
10008 failures.append("export finalization")
10009 if not compat.all(dresults):
10010 fdsk = utils.CommaJoin(idx for (idx, dsk) in enumerate(dresults)
10012 failures.append("disk export: disk(s) %s" % fdsk)
10014 raise errors.OpExecError("Export failed, errors in %s" %
10015 utils.CommaJoin(failures))
10017 # At this point, the export was successful, we can cleanup/finish
10019 # Remove instance if requested
10020 if self.op.remove_instance:
10021 feedback_fn("Removing instance %s" % instance.name)
10022 _RemoveInstance(self, feedback_fn, instance,
10023 self.op.ignore_remove_failures)
10025 if self.op.mode == constants.EXPORT_MODE_LOCAL:
10026 self._CleanupExports(feedback_fn)
10028 return fin_resu, dresults
10031 class LUBackupRemove(NoHooksLU):
10032 """Remove exports related to the named instance.
10037 def ExpandNames(self):
10038 self.needed_locks = {}
10039 # We need all nodes to be locked in order for RemoveExport to work, but we
10040 # don't need to lock the instance itself, as nothing will happen to it (and
10041 # we can remove exports also for a removed instance)
10042 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
10044 def Exec(self, feedback_fn):
10045 """Remove any export.
10048 instance_name = self.cfg.ExpandInstanceName(self.op.instance_name)
10049 # If the instance was not found we'll try with the name that was passed in.
10050 # This will only work if it was an FQDN, though.
10052 if not instance_name:
10054 instance_name = self.op.instance_name
10056 locked_nodes = self.acquired_locks[locking.LEVEL_NODE]
10057 exportlist = self.rpc.call_export_list(locked_nodes)
10059 for node in exportlist:
10060 msg = exportlist[node].fail_msg
10062 self.LogWarning("Failed to query node %s (continuing): %s", node, msg)
10064 if instance_name in exportlist[node].payload:
10066 result = self.rpc.call_export_remove(node, instance_name)
10067 msg = result.fail_msg
10069 logging.error("Could not remove export for instance %s"
10070 " on node %s: %s", instance_name, node, msg)
10072 if fqdn_warn and not found:
10073 feedback_fn("Export not found. If trying to remove an export belonging"
10074 " to a deleted instance please use its Fully Qualified"
10078 class LUGroupAdd(LogicalUnit):
10079 """Logical unit for creating node groups.
10082 HPATH = "group-add"
10083 HTYPE = constants.HTYPE_GROUP
10086 def ExpandNames(self):
10087 # We need the new group's UUID here so that we can create and acquire the
10088 # corresponding lock. Later, in Exec(), we'll indicate to cfg.AddNodeGroup
10089 # that it should not check whether the UUID exists in the configuration.
10090 self.group_uuid = self.cfg.GenerateUniqueID(self.proc.GetECId())
10091 self.needed_locks = {}
10092 self.add_locks[locking.LEVEL_NODEGROUP] = self.group_uuid
10094 def CheckPrereq(self):
10095 """Check prerequisites.
10097 This checks that the given group name is not an existing node group
10102 existing_uuid = self.cfg.LookupNodeGroup(self.op.group_name)
10103 except errors.OpPrereqError:
10106 raise errors.OpPrereqError("Desired group name '%s' already exists as a"
10107 " node group (UUID: %s)" %
10108 (self.op.group_name, existing_uuid),
10109 errors.ECODE_EXISTS)
10111 if self.op.ndparams:
10112 utils.ForceDictType(self.op.ndparams, constants.NDS_PARAMETER_TYPES)
10114 def BuildHooksEnv(self):
10115 """Build hooks env.
10119 "GROUP_NAME": self.op.group_name,
10121 mn = self.cfg.GetMasterNode()
10122 return env, [mn], [mn]
10124 def Exec(self, feedback_fn):
10125 """Add the node group to the cluster.
10128 group_obj = objects.NodeGroup(name=self.op.group_name, members=[],
10129 uuid=self.group_uuid,
10130 alloc_policy=self.op.alloc_policy,
10131 ndparams=self.op.ndparams)
10133 self.cfg.AddNodeGroup(group_obj, self.proc.GetECId(), check_uuid=False)
10134 del self.remove_locks[locking.LEVEL_NODEGROUP]
10137 class LUGroupAssignNodes(NoHooksLU):
10138 """Logical unit for assigning nodes to groups.
10143 def ExpandNames(self):
10144 # These raise errors.OpPrereqError on their own:
10145 self.group_uuid = self.cfg.LookupNodeGroup(self.op.group_name)
10146 self.op.nodes = _GetWantedNodes(self, self.op.nodes)
10148 # We want to lock all the affected nodes and groups. We have readily
10149 # available the list of nodes, and the *destination* group. To gather the
10150 # list of "source" groups, we need to fetch node information.
10151 self.node_data = self.cfg.GetAllNodesInfo()
10152 affected_groups = set(self.node_data[node].group for node in self.op.nodes)
10153 affected_groups.add(self.group_uuid)
10155 self.needed_locks = {
10156 locking.LEVEL_NODEGROUP: list(affected_groups),
10157 locking.LEVEL_NODE: self.op.nodes,
10160 def CheckPrereq(self):
10161 """Check prerequisites.
10164 self.group = self.cfg.GetNodeGroup(self.group_uuid)
10165 instance_data = self.cfg.GetAllInstancesInfo()
10167 if self.group is None:
10168 raise errors.OpExecError("Could not retrieve group '%s' (UUID: %s)" %
10169 (self.op.group_name, self.group_uuid))
10171 (new_splits, previous_splits) = \
10172 self.CheckAssignmentForSplitInstances([(node, self.group_uuid)
10173 for node in self.op.nodes],
10174 self.node_data, instance_data)
10177 fmt_new_splits = utils.CommaJoin(utils.NiceSort(new_splits))
10179 if not self.op.force:
10180 raise errors.OpExecError("The following instances get split by this"
10181 " change and --force was not given: %s" %
10184 self.LogWarning("This operation will split the following instances: %s",
10187 if previous_splits:
10188 self.LogWarning("In addition, these already-split instances continue"
10189 " to be split across groups: %s",
10190 utils.CommaJoin(utils.NiceSort(previous_splits)))
10192 def Exec(self, feedback_fn):
10193 """Assign nodes to a new group.
10196 for node in self.op.nodes:
10197 self.node_data[node].group = self.group_uuid
10199 self.cfg.Update(self.group, feedback_fn) # Saves all modified nodes.
10202 def CheckAssignmentForSplitInstances(changes, node_data, instance_data):
10203 """Check for split instances after a node assignment.
10205 This method considers a series of node assignments as an atomic operation,
10206 and returns information about split instances after applying the set of
10209 In particular, it returns information about newly split instances, and
10210 instances that were already split, and remain so after the change.
10212 Only instances whose disk template is listed in constants.DTS_NET_MIRROR are
10215 @type changes: list of (node_name, new_group_uuid) pairs.
10216 @param changes: list of node assignments to consider.
10217 @param node_data: a dict with data for all nodes
10218 @param instance_data: a dict with all instances to consider
10219 @rtype: a two-tuple
10220 @return: a list of instances that were previously okay and result split as a
10221 consequence of this change, and a list of instances that were previously
10222 split and this change does not fix.
10225 changed_nodes = dict((node, group) for node, group in changes
10226 if node_data[node].group != group)
10228 all_split_instances = set()
10229 previously_split_instances = set()
10231 def InstanceNodes(instance):
10232 return [instance.primary_node] + list(instance.secondary_nodes)
10234 for inst in instance_data.values():
10235 if inst.disk_template not in constants.DTS_NET_MIRROR:
10238 instance_nodes = InstanceNodes(inst)
10240 if len(set(node_data[node].group for node in instance_nodes)) > 1:
10241 previously_split_instances.add(inst.name)
10243 if len(set(changed_nodes.get(node, node_data[node].group)
10244 for node in instance_nodes)) > 1:
10245 all_split_instances.add(inst.name)
10247 return (list(all_split_instances - previously_split_instances),
10248 list(previously_split_instances & all_split_instances))
10251 class _GroupQuery(_QueryBase):
10253 FIELDS = query.GROUP_FIELDS
10255 def ExpandNames(self, lu):
10256 lu.needed_locks = {}
10258 self._all_groups = lu.cfg.GetAllNodeGroupsInfo()
10259 name_to_uuid = dict((g.name, g.uuid) for g in self._all_groups.values())
10262 self.wanted = [name_to_uuid[name]
10263 for name in utils.NiceSort(name_to_uuid.keys())]
10265 # Accept names to be either names or UUIDs.
10268 all_uuid = frozenset(self._all_groups.keys())
10270 for name in self.names:
10271 if name in all_uuid:
10272 self.wanted.append(name)
10273 elif name in name_to_uuid:
10274 self.wanted.append(name_to_uuid[name])
10276 missing.append(name)
10279 raise errors.OpPrereqError("Some groups do not exist: %s" %
10280 utils.CommaJoin(missing),
10281 errors.ECODE_NOENT)
10283 def DeclareLocks(self, lu, level):
10286 def _GetQueryData(self, lu):
10287 """Computes the list of node groups and their attributes.
10290 do_nodes = query.GQ_NODE in self.requested_data
10291 do_instances = query.GQ_INST in self.requested_data
10293 group_to_nodes = None
10294 group_to_instances = None
10296 # For GQ_NODE, we need to map group->[nodes], and group->[instances] for
10297 # GQ_INST. The former is attainable with just GetAllNodesInfo(), but for the
10298 # latter GetAllInstancesInfo() is not enough, for we have to go through
10299 # instance->node. Hence, we will need to process nodes even if we only need
10300 # instance information.
10301 if do_nodes or do_instances:
10302 all_nodes = lu.cfg.GetAllNodesInfo()
10303 group_to_nodes = dict((uuid, []) for uuid in self.wanted)
10306 for node in all_nodes.values():
10307 if node.group in group_to_nodes:
10308 group_to_nodes[node.group].append(node.name)
10309 node_to_group[node.name] = node.group
10312 all_instances = lu.cfg.GetAllInstancesInfo()
10313 group_to_instances = dict((uuid, []) for uuid in self.wanted)
10315 for instance in all_instances.values():
10316 node = instance.primary_node
10317 if node in node_to_group:
10318 group_to_instances[node_to_group[node]].append(instance.name)
10321 # Do not pass on node information if it was not requested.
10322 group_to_nodes = None
10324 return query.GroupQueryData([self._all_groups[uuid]
10325 for uuid in self.wanted],
10326 group_to_nodes, group_to_instances)
10329 class LUGroupQuery(NoHooksLU):
10330 """Logical unit for querying node groups.
10335 def CheckArguments(self):
10336 self.gq = _GroupQuery(self.op.names, self.op.output_fields, False)
10338 def ExpandNames(self):
10339 self.gq.ExpandNames(self)
10341 def Exec(self, feedback_fn):
10342 return self.gq.OldStyleQuery(self)
10345 class LUGroupSetParams(LogicalUnit):
10346 """Modifies the parameters of a node group.
10349 HPATH = "group-modify"
10350 HTYPE = constants.HTYPE_GROUP
10353 def CheckArguments(self):
10356 self.op.alloc_policy,
10359 if all_changes.count(None) == len(all_changes):
10360 raise errors.OpPrereqError("Please pass at least one modification",
10361 errors.ECODE_INVAL)
10363 def ExpandNames(self):
10364 # This raises errors.OpPrereqError on its own:
10365 self.group_uuid = self.cfg.LookupNodeGroup(self.op.group_name)
10367 self.needed_locks = {
10368 locking.LEVEL_NODEGROUP: [self.group_uuid],
10371 def CheckPrereq(self):
10372 """Check prerequisites.
10375 self.group = self.cfg.GetNodeGroup(self.group_uuid)
10377 if self.group is None:
10378 raise errors.OpExecError("Could not retrieve group '%s' (UUID: %s)" %
10379 (self.op.group_name, self.group_uuid))
10381 if self.op.ndparams:
10382 new_ndparams = _GetUpdatedParams(self.group.ndparams, self.op.ndparams)
10383 utils.ForceDictType(self.op.ndparams, constants.NDS_PARAMETER_TYPES)
10384 self.new_ndparams = new_ndparams
10386 def BuildHooksEnv(self):
10387 """Build hooks env.
10391 "GROUP_NAME": self.op.group_name,
10392 "NEW_ALLOC_POLICY": self.op.alloc_policy,
10394 mn = self.cfg.GetMasterNode()
10395 return env, [mn], [mn]
10397 def Exec(self, feedback_fn):
10398 """Modifies the node group.
10403 if self.op.ndparams:
10404 self.group.ndparams = self.new_ndparams
10405 result.append(("ndparams", str(self.group.ndparams)))
10407 if self.op.alloc_policy:
10408 self.group.alloc_policy = self.op.alloc_policy
10410 self.cfg.Update(self.group, feedback_fn)
10415 class LUGroupRemove(LogicalUnit):
10416 HPATH = "group-remove"
10417 HTYPE = constants.HTYPE_GROUP
10420 def ExpandNames(self):
10421 # This will raises errors.OpPrereqError on its own:
10422 self.group_uuid = self.cfg.LookupNodeGroup(self.op.group_name)
10423 self.needed_locks = {
10424 locking.LEVEL_NODEGROUP: [self.group_uuid],
10427 def CheckPrereq(self):
10428 """Check prerequisites.
10430 This checks that the given group name exists as a node group, that is
10431 empty (i.e., contains no nodes), and that is not the last group of the
10435 # Verify that the group is empty.
10436 group_nodes = [node.name
10437 for node in self.cfg.GetAllNodesInfo().values()
10438 if node.group == self.group_uuid]
10441 raise errors.OpPrereqError("Group '%s' not empty, has the following"
10443 (self.op.group_name,
10444 utils.CommaJoin(utils.NiceSort(group_nodes))),
10445 errors.ECODE_STATE)
10447 # Verify the cluster would not be left group-less.
10448 if len(self.cfg.GetNodeGroupList()) == 1:
10449 raise errors.OpPrereqError("Group '%s' is the only group,"
10450 " cannot be removed" %
10451 self.op.group_name,
10452 errors.ECODE_STATE)
10454 def BuildHooksEnv(self):
10455 """Build hooks env.
10459 "GROUP_NAME": self.op.group_name,
10461 mn = self.cfg.GetMasterNode()
10462 return env, [mn], [mn]
10464 def Exec(self, feedback_fn):
10465 """Remove the node group.
10469 self.cfg.RemoveNodeGroup(self.group_uuid)
10470 except errors.ConfigurationError:
10471 raise errors.OpExecError("Group '%s' with UUID %s disappeared" %
10472 (self.op.group_name, self.group_uuid))
10474 self.remove_locks[locking.LEVEL_NODEGROUP] = self.group_uuid
10477 class LUGroupRename(LogicalUnit):
10478 HPATH = "group-rename"
10479 HTYPE = constants.HTYPE_GROUP
10482 def ExpandNames(self):
10483 # This raises errors.OpPrereqError on its own:
10484 self.group_uuid = self.cfg.LookupNodeGroup(self.op.old_name)
10486 self.needed_locks = {
10487 locking.LEVEL_NODEGROUP: [self.group_uuid],
10490 def CheckPrereq(self):
10491 """Check prerequisites.
10493 This checks that the given old_name exists as a node group, and that
10498 new_name_uuid = self.cfg.LookupNodeGroup(self.op.new_name)
10499 except errors.OpPrereqError:
10502 raise errors.OpPrereqError("Desired new name '%s' clashes with existing"
10503 " node group (UUID: %s)" %
10504 (self.op.new_name, new_name_uuid),
10505 errors.ECODE_EXISTS)
10507 def BuildHooksEnv(self):
10508 """Build hooks env.
10512 "OLD_NAME": self.op.old_name,
10513 "NEW_NAME": self.op.new_name,
10516 mn = self.cfg.GetMasterNode()
10517 all_nodes = self.cfg.GetAllNodesInfo()
10519 all_nodes.pop(mn, None)
10521 for node in all_nodes.values():
10522 if node.group == self.group_uuid:
10523 run_nodes.append(node.name)
10525 return env, run_nodes, run_nodes
10527 def Exec(self, feedback_fn):
10528 """Rename the node group.
10531 group = self.cfg.GetNodeGroup(self.group_uuid)
10534 raise errors.OpExecError("Could not retrieve group '%s' (UUID: %s)" %
10535 (self.op.old_name, self.group_uuid))
10537 group.name = self.op.new_name
10538 self.cfg.Update(group, feedback_fn)
10540 return self.op.new_name
10543 class TagsLU(NoHooksLU): # pylint: disable-msg=W0223
10544 """Generic tags LU.
10546 This is an abstract class which is the parent of all the other tags LUs.
10550 def ExpandNames(self):
10551 self.needed_locks = {}
10552 if self.op.kind == constants.TAG_NODE:
10553 self.op.name = _ExpandNodeName(self.cfg, self.op.name)
10554 self.needed_locks[locking.LEVEL_NODE] = self.op.name
10555 elif self.op.kind == constants.TAG_INSTANCE:
10556 self.op.name = _ExpandInstanceName(self.cfg, self.op.name)
10557 self.needed_locks[locking.LEVEL_INSTANCE] = self.op.name
10559 # FIXME: Acquire BGL for cluster tag operations (as of this writing it's
10560 # not possible to acquire the BGL based on opcode parameters)
10562 def CheckPrereq(self):
10563 """Check prerequisites.
10566 if self.op.kind == constants.TAG_CLUSTER:
10567 self.target = self.cfg.GetClusterInfo()
10568 elif self.op.kind == constants.TAG_NODE:
10569 self.target = self.cfg.GetNodeInfo(self.op.name)
10570 elif self.op.kind == constants.TAG_INSTANCE:
10571 self.target = self.cfg.GetInstanceInfo(self.op.name)
10573 raise errors.OpPrereqError("Wrong tag type requested (%s)" %
10574 str(self.op.kind), errors.ECODE_INVAL)
10577 class LUTagsGet(TagsLU):
10578 """Returns the tags of a given object.
10583 def ExpandNames(self):
10584 TagsLU.ExpandNames(self)
10586 # Share locks as this is only a read operation
10587 self.share_locks = dict.fromkeys(locking.LEVELS, 1)
10589 def Exec(self, feedback_fn):
10590 """Returns the tag list.
10593 return list(self.target.GetTags())
10596 class LUTagsSearch(NoHooksLU):
10597 """Searches the tags for a given pattern.
10602 def ExpandNames(self):
10603 self.needed_locks = {}
10605 def CheckPrereq(self):
10606 """Check prerequisites.
10608 This checks the pattern passed for validity by compiling it.
10612 self.re = re.compile(self.op.pattern)
10613 except re.error, err:
10614 raise errors.OpPrereqError("Invalid search pattern '%s': %s" %
10615 (self.op.pattern, err), errors.ECODE_INVAL)
10617 def Exec(self, feedback_fn):
10618 """Returns the tag list.
10622 tgts = [("/cluster", cfg.GetClusterInfo())]
10623 ilist = cfg.GetAllInstancesInfo().values()
10624 tgts.extend([("/instances/%s" % i.name, i) for i in ilist])
10625 nlist = cfg.GetAllNodesInfo().values()
10626 tgts.extend([("/nodes/%s" % n.name, n) for n in nlist])
10628 for path, target in tgts:
10629 for tag in target.GetTags():
10630 if self.re.search(tag):
10631 results.append((path, tag))
10635 class LUTagsSet(TagsLU):
10636 """Sets a tag on a given object.
10641 def CheckPrereq(self):
10642 """Check prerequisites.
10644 This checks the type and length of the tag name and value.
10647 TagsLU.CheckPrereq(self)
10648 for tag in self.op.tags:
10649 objects.TaggableObject.ValidateTag(tag)
10651 def Exec(self, feedback_fn):
10656 for tag in self.op.tags:
10657 self.target.AddTag(tag)
10658 except errors.TagError, err:
10659 raise errors.OpExecError("Error while setting tag: %s" % str(err))
10660 self.cfg.Update(self.target, feedback_fn)
10663 class LUTagsDel(TagsLU):
10664 """Delete a list of tags from a given object.
10669 def CheckPrereq(self):
10670 """Check prerequisites.
10672 This checks that we have the given tag.
10675 TagsLU.CheckPrereq(self)
10676 for tag in self.op.tags:
10677 objects.TaggableObject.ValidateTag(tag)
10678 del_tags = frozenset(self.op.tags)
10679 cur_tags = self.target.GetTags()
10681 diff_tags = del_tags - cur_tags
10683 diff_names = ("'%s'" % i for i in sorted(diff_tags))
10684 raise errors.OpPrereqError("Tag(s) %s not found" %
10685 (utils.CommaJoin(diff_names), ),
10686 errors.ECODE_NOENT)
10688 def Exec(self, feedback_fn):
10689 """Remove the tag from the object.
10692 for tag in self.op.tags:
10693 self.target.RemoveTag(tag)
10694 self.cfg.Update(self.target, feedback_fn)
10697 class LUTestDelay(NoHooksLU):
10698 """Sleep for a specified amount of time.
10700 This LU sleeps on the master and/or nodes for a specified amount of
10706 def ExpandNames(self):
10707 """Expand names and set required locks.
10709 This expands the node list, if any.
10712 self.needed_locks = {}
10713 if self.op.on_nodes:
10714 # _GetWantedNodes can be used here, but is not always appropriate to use
10715 # this way in ExpandNames. Check LogicalUnit.ExpandNames docstring for
10716 # more information.
10717 self.op.on_nodes = _GetWantedNodes(self, self.op.on_nodes)
10718 self.needed_locks[locking.LEVEL_NODE] = self.op.on_nodes
10720 def _TestDelay(self):
10721 """Do the actual sleep.
10724 if self.op.on_master:
10725 if not utils.TestDelay(self.op.duration):
10726 raise errors.OpExecError("Error during master delay test")
10727 if self.op.on_nodes:
10728 result = self.rpc.call_test_delay(self.op.on_nodes, self.op.duration)
10729 for node, node_result in result.items():
10730 node_result.Raise("Failure during rpc call to node %s" % node)
10732 def Exec(self, feedback_fn):
10733 """Execute the test delay opcode, with the wanted repetitions.
10736 if self.op.repeat == 0:
10739 top_value = self.op.repeat - 1
10740 for i in range(self.op.repeat):
10741 self.LogInfo("Test delay iteration %d/%d" % (i, top_value))
10745 class LUTestJqueue(NoHooksLU):
10746 """Utility LU to test some aspects of the job queue.
10751 # Must be lower than default timeout for WaitForJobChange to see whether it
10752 # notices changed jobs
10753 _CLIENT_CONNECT_TIMEOUT = 20.0
10754 _CLIENT_CONFIRM_TIMEOUT = 60.0
10757 def _NotifyUsingSocket(cls, cb, errcls):
10758 """Opens a Unix socket and waits for another program to connect.
10761 @param cb: Callback to send socket name to client
10762 @type errcls: class
10763 @param errcls: Exception class to use for errors
10766 # Using a temporary directory as there's no easy way to create temporary
10767 # sockets without writing a custom loop around tempfile.mktemp and
10769 tmpdir = tempfile.mkdtemp()
10771 tmpsock = utils.PathJoin(tmpdir, "sock")
10773 logging.debug("Creating temporary socket at %s", tmpsock)
10774 sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
10779 # Send details to client
10782 # Wait for client to connect before continuing
10783 sock.settimeout(cls._CLIENT_CONNECT_TIMEOUT)
10785 (conn, _) = sock.accept()
10786 except socket.error, err:
10787 raise errcls("Client didn't connect in time (%s)" % err)
10791 # Remove as soon as client is connected
10792 shutil.rmtree(tmpdir)
10794 # Wait for client to close
10797 # pylint: disable-msg=E1101
10798 # Instance of '_socketobject' has no ... member
10799 conn.settimeout(cls._CLIENT_CONFIRM_TIMEOUT)
10801 except socket.error, err:
10802 raise errcls("Client failed to confirm notification (%s)" % err)
10806 def _SendNotification(self, test, arg, sockname):
10807 """Sends a notification to the client.
10810 @param test: Test name
10811 @param arg: Test argument (depends on test)
10812 @type sockname: string
10813 @param sockname: Socket path
10816 self.Log(constants.ELOG_JQUEUE_TEST, (sockname, test, arg))
10818 def _Notify(self, prereq, test, arg):
10819 """Notifies the client of a test.
10822 @param prereq: Whether this is a prereq-phase test
10824 @param test: Test name
10825 @param arg: Test argument (depends on test)
10829 errcls = errors.OpPrereqError
10831 errcls = errors.OpExecError
10833 return self._NotifyUsingSocket(compat.partial(self._SendNotification,
10837 def CheckArguments(self):
10838 self.checkargs_calls = getattr(self, "checkargs_calls", 0) + 1
10839 self.expandnames_calls = 0
10841 def ExpandNames(self):
10842 checkargs_calls = getattr(self, "checkargs_calls", 0)
10843 if checkargs_calls < 1:
10844 raise errors.ProgrammerError("CheckArguments was not called")
10846 self.expandnames_calls += 1
10848 if self.op.notify_waitlock:
10849 self._Notify(True, constants.JQT_EXPANDNAMES, None)
10851 self.LogInfo("Expanding names")
10853 # Get lock on master node (just to get a lock, not for a particular reason)
10854 self.needed_locks = {
10855 locking.LEVEL_NODE: self.cfg.GetMasterNode(),
10858 def Exec(self, feedback_fn):
10859 if self.expandnames_calls < 1:
10860 raise errors.ProgrammerError("ExpandNames was not called")
10862 if self.op.notify_exec:
10863 self._Notify(False, constants.JQT_EXEC, None)
10865 self.LogInfo("Executing")
10867 if self.op.log_messages:
10868 self._Notify(False, constants.JQT_STARTMSG, len(self.op.log_messages))
10869 for idx, msg in enumerate(self.op.log_messages):
10870 self.LogInfo("Sending log message %s", idx + 1)
10871 feedback_fn(constants.JQT_MSGPREFIX + msg)
10872 # Report how many test messages have been sent
10873 self._Notify(False, constants.JQT_LOGMSG, idx + 1)
10876 raise errors.OpExecError("Opcode failure was requested")
10881 class IAllocator(object):
10882 """IAllocator framework.
10884 An IAllocator instance has three sets of attributes:
10885 - cfg that is needed to query the cluster
10886 - input data (all members of the _KEYS class attribute are required)
10887 - four buffer attributes (in|out_data|text), that represent the
10888 input (to the external script) in text and data structure format,
10889 and the output from it, again in two formats
10890 - the result variables from the script (success, info, nodes) for
10894 # pylint: disable-msg=R0902
10895 # lots of instance attributes
10897 "name", "mem_size", "disks", "disk_template",
10898 "os", "tags", "nics", "vcpus", "hypervisor",
10901 "name", "relocate_from",
10907 def __init__(self, cfg, rpc, mode, **kwargs):
10910 # init buffer variables
10911 self.in_text = self.out_text = self.in_data = self.out_data = None
10912 # init all input fields so that pylint is happy
10914 self.mem_size = self.disks = self.disk_template = None
10915 self.os = self.tags = self.nics = self.vcpus = None
10916 self.hypervisor = None
10917 self.relocate_from = None
10919 self.evac_nodes = None
10921 self.required_nodes = None
10922 # init result fields
10923 self.success = self.info = self.result = None
10924 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
10925 keyset = self._ALLO_KEYS
10926 fn = self._AddNewInstance
10927 elif self.mode == constants.IALLOCATOR_MODE_RELOC:
10928 keyset = self._RELO_KEYS
10929 fn = self._AddRelocateInstance
10930 elif self.mode == constants.IALLOCATOR_MODE_MEVAC:
10931 keyset = self._EVAC_KEYS
10932 fn = self._AddEvacuateNodes
10934 raise errors.ProgrammerError("Unknown mode '%s' passed to the"
10935 " IAllocator" % self.mode)
10937 if key not in keyset:
10938 raise errors.ProgrammerError("Invalid input parameter '%s' to"
10939 " IAllocator" % key)
10940 setattr(self, key, kwargs[key])
10943 if key not in kwargs:
10944 raise errors.ProgrammerError("Missing input parameter '%s' to"
10945 " IAllocator" % key)
10946 self._BuildInputData(fn)
10948 def _ComputeClusterData(self):
10949 """Compute the generic allocator input data.
10951 This is the data that is independent of the actual operation.
10955 cluster_info = cfg.GetClusterInfo()
10958 "version": constants.IALLOCATOR_VERSION,
10959 "cluster_name": cfg.GetClusterName(),
10960 "cluster_tags": list(cluster_info.GetTags()),
10961 "enabled_hypervisors": list(cluster_info.enabled_hypervisors),
10962 # we don't have job IDs
10964 ninfo = cfg.GetAllNodesInfo()
10965 iinfo = cfg.GetAllInstancesInfo().values()
10966 i_list = [(inst, cluster_info.FillBE(inst)) for inst in iinfo]
10969 node_list = [n.name for n in ninfo.values() if n.vm_capable]
10971 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
10972 hypervisor_name = self.hypervisor
10973 elif self.mode == constants.IALLOCATOR_MODE_RELOC:
10974 hypervisor_name = cfg.GetInstanceInfo(self.name).hypervisor
10975 elif self.mode == constants.IALLOCATOR_MODE_MEVAC:
10976 hypervisor_name = cluster_info.enabled_hypervisors[0]
10978 node_data = self.rpc.call_node_info(node_list, cfg.GetVGName(),
10981 self.rpc.call_all_instances_info(node_list,
10982 cluster_info.enabled_hypervisors)
10984 data["nodegroups"] = self._ComputeNodeGroupData(cfg)
10986 config_ndata = self._ComputeBasicNodeData(ninfo)
10987 data["nodes"] = self._ComputeDynamicNodeData(ninfo, node_data, node_iinfo,
10988 i_list, config_ndata)
10989 assert len(data["nodes"]) == len(ninfo), \
10990 "Incomplete node data computed"
10992 data["instances"] = self._ComputeInstanceData(cluster_info, i_list)
10994 self.in_data = data
10997 def _ComputeNodeGroupData(cfg):
10998 """Compute node groups data.
11002 for guuid, gdata in cfg.GetAllNodeGroupsInfo().items():
11004 "name": gdata.name,
11005 "alloc_policy": gdata.alloc_policy,
11010 def _ComputeBasicNodeData(node_cfg):
11011 """Compute global node data.
11014 @returns: a dict of name: (node dict, node config)
11018 for ninfo in node_cfg.values():
11019 # fill in static (config-based) values
11021 "tags": list(ninfo.GetTags()),
11022 "primary_ip": ninfo.primary_ip,
11023 "secondary_ip": ninfo.secondary_ip,
11024 "offline": ninfo.offline,
11025 "drained": ninfo.drained,
11026 "master_candidate": ninfo.master_candidate,
11027 "group": ninfo.group,
11028 "master_capable": ninfo.master_capable,
11029 "vm_capable": ninfo.vm_capable,
11032 node_results[ninfo.name] = pnr
11034 return node_results
11037 def _ComputeDynamicNodeData(node_cfg, node_data, node_iinfo, i_list,
11039 """Compute global node data.
11041 @param node_results: the basic node structures as filled from the config
11044 # make a copy of the current dict
11045 node_results = dict(node_results)
11046 for nname, nresult in node_data.items():
11047 assert nname in node_results, "Missing basic data for node %s" % nname
11048 ninfo = node_cfg[nname]
11050 if not (ninfo.offline or ninfo.drained):
11051 nresult.Raise("Can't get data for node %s" % nname)
11052 node_iinfo[nname].Raise("Can't get node instance info from node %s" %
11054 remote_info = nresult.payload
11056 for attr in ['memory_total', 'memory_free', 'memory_dom0',
11057 'vg_size', 'vg_free', 'cpu_total']:
11058 if attr not in remote_info:
11059 raise errors.OpExecError("Node '%s' didn't return attribute"
11060 " '%s'" % (nname, attr))
11061 if not isinstance(remote_info[attr], int):
11062 raise errors.OpExecError("Node '%s' returned invalid value"
11064 (nname, attr, remote_info[attr]))
11065 # compute memory used by primary instances
11066 i_p_mem = i_p_up_mem = 0
11067 for iinfo, beinfo in i_list:
11068 if iinfo.primary_node == nname:
11069 i_p_mem += beinfo[constants.BE_MEMORY]
11070 if iinfo.name not in node_iinfo[nname].payload:
11073 i_used_mem = int(node_iinfo[nname].payload[iinfo.name]['memory'])
11074 i_mem_diff = beinfo[constants.BE_MEMORY] - i_used_mem
11075 remote_info['memory_free'] -= max(0, i_mem_diff)
11078 i_p_up_mem += beinfo[constants.BE_MEMORY]
11080 # compute memory used by instances
11082 "total_memory": remote_info['memory_total'],
11083 "reserved_memory": remote_info['memory_dom0'],
11084 "free_memory": remote_info['memory_free'],
11085 "total_disk": remote_info['vg_size'],
11086 "free_disk": remote_info['vg_free'],
11087 "total_cpus": remote_info['cpu_total'],
11088 "i_pri_memory": i_p_mem,
11089 "i_pri_up_memory": i_p_up_mem,
11091 pnr_dyn.update(node_results[nname])
11092 node_results[nname] = pnr_dyn
11094 return node_results
11097 def _ComputeInstanceData(cluster_info, i_list):
11098 """Compute global instance data.
11102 for iinfo, beinfo in i_list:
11104 for nic in iinfo.nics:
11105 filled_params = cluster_info.SimpleFillNIC(nic.nicparams)
11106 nic_dict = {"mac": nic.mac,
11108 "mode": filled_params[constants.NIC_MODE],
11109 "link": filled_params[constants.NIC_LINK],
11111 if filled_params[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
11112 nic_dict["bridge"] = filled_params[constants.NIC_LINK]
11113 nic_data.append(nic_dict)
11115 "tags": list(iinfo.GetTags()),
11116 "admin_up": iinfo.admin_up,
11117 "vcpus": beinfo[constants.BE_VCPUS],
11118 "memory": beinfo[constants.BE_MEMORY],
11120 "nodes": [iinfo.primary_node] + list(iinfo.secondary_nodes),
11122 "disks": [{"size": dsk.size, "mode": dsk.mode} for dsk in iinfo.disks],
11123 "disk_template": iinfo.disk_template,
11124 "hypervisor": iinfo.hypervisor,
11126 pir["disk_space_total"] = _ComputeDiskSize(iinfo.disk_template,
11128 instance_data[iinfo.name] = pir
11130 return instance_data
11132 def _AddNewInstance(self):
11133 """Add new instance data to allocator structure.
11135 This in combination with _AllocatorGetClusterData will create the
11136 correct structure needed as input for the allocator.
11138 The checks for the completeness of the opcode must have already been
11142 disk_space = _ComputeDiskSize(self.disk_template, self.disks)
11144 if self.disk_template in constants.DTS_NET_MIRROR:
11145 self.required_nodes = 2
11147 self.required_nodes = 1
11150 "disk_template": self.disk_template,
11153 "vcpus": self.vcpus,
11154 "memory": self.mem_size,
11155 "disks": self.disks,
11156 "disk_space_total": disk_space,
11158 "required_nodes": self.required_nodes,
11162 def _AddRelocateInstance(self):
11163 """Add relocate instance data to allocator structure.
11165 This in combination with _IAllocatorGetClusterData will create the
11166 correct structure needed as input for the allocator.
11168 The checks for the completeness of the opcode must have already been
11172 instance = self.cfg.GetInstanceInfo(self.name)
11173 if instance is None:
11174 raise errors.ProgrammerError("Unknown instance '%s' passed to"
11175 " IAllocator" % self.name)
11177 if instance.disk_template not in constants.DTS_NET_MIRROR:
11178 raise errors.OpPrereqError("Can't relocate non-mirrored instances",
11179 errors.ECODE_INVAL)
11181 if len(instance.secondary_nodes) != 1:
11182 raise errors.OpPrereqError("Instance has not exactly one secondary node",
11183 errors.ECODE_STATE)
11185 self.required_nodes = 1
11186 disk_sizes = [{'size': disk.size} for disk in instance.disks]
11187 disk_space = _ComputeDiskSize(instance.disk_template, disk_sizes)
11191 "disk_space_total": disk_space,
11192 "required_nodes": self.required_nodes,
11193 "relocate_from": self.relocate_from,
11197 def _AddEvacuateNodes(self):
11198 """Add evacuate nodes data to allocator structure.
11202 "evac_nodes": self.evac_nodes
11206 def _BuildInputData(self, fn):
11207 """Build input data structures.
11210 self._ComputeClusterData()
11213 request["type"] = self.mode
11214 self.in_data["request"] = request
11216 self.in_text = serializer.Dump(self.in_data)
11218 def Run(self, name, validate=True, call_fn=None):
11219 """Run an instance allocator and return the results.
11222 if call_fn is None:
11223 call_fn = self.rpc.call_iallocator_runner
11225 result = call_fn(self.cfg.GetMasterNode(), name, self.in_text)
11226 result.Raise("Failure while running the iallocator script")
11228 self.out_text = result.payload
11230 self._ValidateResult()
11232 def _ValidateResult(self):
11233 """Process the allocator results.
11235 This will process and if successful save the result in
11236 self.out_data and the other parameters.
11240 rdict = serializer.Load(self.out_text)
11241 except Exception, err:
11242 raise errors.OpExecError("Can't parse iallocator results: %s" % str(err))
11244 if not isinstance(rdict, dict):
11245 raise errors.OpExecError("Can't parse iallocator results: not a dict")
11247 # TODO: remove backwards compatiblity in later versions
11248 if "nodes" in rdict and "result" not in rdict:
11249 rdict["result"] = rdict["nodes"]
11252 for key in "success", "info", "result":
11253 if key not in rdict:
11254 raise errors.OpExecError("Can't parse iallocator results:"
11255 " missing key '%s'" % key)
11256 setattr(self, key, rdict[key])
11258 if not isinstance(rdict["result"], list):
11259 raise errors.OpExecError("Can't parse iallocator results: 'result' key"
11261 self.out_data = rdict
11264 class LUTestAllocator(NoHooksLU):
11265 """Run allocator tests.
11267 This LU runs the allocator tests
11270 def CheckPrereq(self):
11271 """Check prerequisites.
11273 This checks the opcode parameters depending on the director and mode test.
11276 if self.op.mode == constants.IALLOCATOR_MODE_ALLOC:
11277 for attr in ["mem_size", "disks", "disk_template",
11278 "os", "tags", "nics", "vcpus"]:
11279 if not hasattr(self.op, attr):
11280 raise errors.OpPrereqError("Missing attribute '%s' on opcode input" %
11281 attr, errors.ECODE_INVAL)
11282 iname = self.cfg.ExpandInstanceName(self.op.name)
11283 if iname is not None:
11284 raise errors.OpPrereqError("Instance '%s' already in the cluster" %
11285 iname, errors.ECODE_EXISTS)
11286 if not isinstance(self.op.nics, list):
11287 raise errors.OpPrereqError("Invalid parameter 'nics'",
11288 errors.ECODE_INVAL)
11289 if not isinstance(self.op.disks, list):
11290 raise errors.OpPrereqError("Invalid parameter 'disks'",
11291 errors.ECODE_INVAL)
11292 for row in self.op.disks:
11293 if (not isinstance(row, dict) or
11294 "size" not in row or
11295 not isinstance(row["size"], int) or
11296 "mode" not in row or
11297 row["mode"] not in ['r', 'w']):
11298 raise errors.OpPrereqError("Invalid contents of the 'disks'"
11299 " parameter", errors.ECODE_INVAL)
11300 if self.op.hypervisor is None:
11301 self.op.hypervisor = self.cfg.GetHypervisorType()
11302 elif self.op.mode == constants.IALLOCATOR_MODE_RELOC:
11303 fname = _ExpandInstanceName(self.cfg, self.op.name)
11304 self.op.name = fname
11305 self.relocate_from = self.cfg.GetInstanceInfo(fname).secondary_nodes
11306 elif self.op.mode == constants.IALLOCATOR_MODE_MEVAC:
11307 if not hasattr(self.op, "evac_nodes"):
11308 raise errors.OpPrereqError("Missing attribute 'evac_nodes' on"
11309 " opcode input", errors.ECODE_INVAL)
11311 raise errors.OpPrereqError("Invalid test allocator mode '%s'" %
11312 self.op.mode, errors.ECODE_INVAL)
11314 if self.op.direction == constants.IALLOCATOR_DIR_OUT:
11315 if self.op.allocator is None:
11316 raise errors.OpPrereqError("Missing allocator name",
11317 errors.ECODE_INVAL)
11318 elif self.op.direction != constants.IALLOCATOR_DIR_IN:
11319 raise errors.OpPrereqError("Wrong allocator test '%s'" %
11320 self.op.direction, errors.ECODE_INVAL)
11322 def Exec(self, feedback_fn):
11323 """Run the allocator test.
11326 if self.op.mode == constants.IALLOCATOR_MODE_ALLOC:
11327 ial = IAllocator(self.cfg, self.rpc,
11330 mem_size=self.op.mem_size,
11331 disks=self.op.disks,
11332 disk_template=self.op.disk_template,
11336 vcpus=self.op.vcpus,
11337 hypervisor=self.op.hypervisor,
11339 elif self.op.mode == constants.IALLOCATOR_MODE_RELOC:
11340 ial = IAllocator(self.cfg, self.rpc,
11343 relocate_from=list(self.relocate_from),
11345 elif self.op.mode == constants.IALLOCATOR_MODE_MEVAC:
11346 ial = IAllocator(self.cfg, self.rpc,
11348 evac_nodes=self.op.evac_nodes)
11350 raise errors.ProgrammerError("Uncatched mode %s in"
11351 " LUTestAllocator.Exec", self.op.mode)
11353 if self.op.direction == constants.IALLOCATOR_DIR_IN:
11354 result = ial.in_text
11356 ial.Run(self.op.allocator, validate=False)
11357 result = ial.out_text
11361 #: Query type implementations
11363 constants.QR_INSTANCE: _InstanceQuery,
11364 constants.QR_NODE: _NodeQuery,
11365 constants.QR_GROUP: _GroupQuery,
11369 def _GetQueryImplementation(name):
11370 """Returns the implemtnation for a query type.
11372 @param name: Query type, must be one of L{constants.QR_OP_QUERY}
11376 return _QUERY_IMPL[name]
11378 raise errors.OpPrereqError("Unknown query resource '%s'" % name,
11379 errors.ECODE_INVAL)