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, filter_, fields, use_locking):
457 """Initializes this class.
460 self.names = qlang.ReadSimpleFilter("name", filter_)
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: dictionary of {primary-node: list of instances} for all
1258 instances for which this node is secondary (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 cluster_info = self.cfg.GetClusterInfo()
1621 for node, n_img in node_image.items():
1622 # This code checks that every node which is now listed as
1623 # secondary has enough memory to host all instances it is
1624 # supposed to should a single other node in the cluster fail.
1625 # FIXME: not ready for failover to an arbitrary node
1626 # FIXME: does not support file-backed instances
1627 # WARNING: we currently take into account down instances as well
1628 # as up ones, considering that even if they're down someone
1629 # might want to start them even in the event of a node failure.
1631 # we're skipping offline nodes from the N+1 warning, since
1632 # most likely we don't have good memory infromation from them;
1633 # we already list instances living on such nodes, and that's
1636 for prinode, instances in n_img.sbp.items():
1638 for instance in instances:
1639 bep = cluster_info.FillBE(instance_cfg[instance])
1640 if bep[constants.BE_AUTO_BALANCE]:
1641 needed_mem += bep[constants.BE_MEMORY]
1642 test = n_img.mfree < needed_mem
1643 self._ErrorIf(test, self.ENODEN1, node,
1644 "not enough memory to accomodate instance failovers"
1645 " should node %s fail", prinode)
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 if self.op.nicparams:
2806 utils.ForceDictType(self.op.nicparams, constants.NICS_PARAMETER_TYPES)
2807 self.new_nicparams = cluster.SimpleFillNIC(self.op.nicparams)
2808 objects.NIC.CheckParameterSyntax(self.new_nicparams)
2811 # check all instances for consistency
2812 for instance in self.cfg.GetAllInstancesInfo().values():
2813 for nic_idx, nic in enumerate(instance.nics):
2814 params_copy = copy.deepcopy(nic.nicparams)
2815 params_filled = objects.FillDict(self.new_nicparams, params_copy)
2817 # check parameter syntax
2819 objects.NIC.CheckParameterSyntax(params_filled)
2820 except errors.ConfigurationError, err:
2821 nic_errors.append("Instance %s, nic/%d: %s" %
2822 (instance.name, nic_idx, err))
2824 # if we're moving instances to routed, check that they have an ip
2825 target_mode = params_filled[constants.NIC_MODE]
2826 if target_mode == constants.NIC_MODE_ROUTED and not nic.ip:
2827 nic_errors.append("Instance %s, nic/%d: routed nick with no ip" %
2828 (instance.name, nic_idx))
2830 raise errors.OpPrereqError("Cannot apply the change, errors:\n%s" %
2831 "\n".join(nic_errors))
2833 # hypervisor list/parameters
2834 self.new_hvparams = new_hvp = objects.FillDict(cluster.hvparams, {})
2835 if self.op.hvparams:
2836 for hv_name, hv_dict in self.op.hvparams.items():
2837 if hv_name not in self.new_hvparams:
2838 self.new_hvparams[hv_name] = hv_dict
2840 self.new_hvparams[hv_name].update(hv_dict)
2842 # os hypervisor parameters
2843 self.new_os_hvp = objects.FillDict(cluster.os_hvp, {})
2845 for os_name, hvs in self.op.os_hvp.items():
2846 if os_name not in self.new_os_hvp:
2847 self.new_os_hvp[os_name] = hvs
2849 for hv_name, hv_dict in hvs.items():
2850 if hv_name not in self.new_os_hvp[os_name]:
2851 self.new_os_hvp[os_name][hv_name] = hv_dict
2853 self.new_os_hvp[os_name][hv_name].update(hv_dict)
2856 self.new_osp = objects.FillDict(cluster.osparams, {})
2857 if self.op.osparams:
2858 for os_name, osp in self.op.osparams.items():
2859 if os_name not in self.new_osp:
2860 self.new_osp[os_name] = {}
2862 self.new_osp[os_name] = _GetUpdatedParams(self.new_osp[os_name], osp,
2865 if not self.new_osp[os_name]:
2866 # we removed all parameters
2867 del self.new_osp[os_name]
2869 # check the parameter validity (remote check)
2870 _CheckOSParams(self, False, [self.cfg.GetMasterNode()],
2871 os_name, self.new_osp[os_name])
2873 # changes to the hypervisor list
2874 if self.op.enabled_hypervisors is not None:
2875 self.hv_list = self.op.enabled_hypervisors
2876 for hv in self.hv_list:
2877 # if the hypervisor doesn't already exist in the cluster
2878 # hvparams, we initialize it to empty, and then (in both
2879 # cases) we make sure to fill the defaults, as we might not
2880 # have a complete defaults list if the hypervisor wasn't
2882 if hv not in new_hvp:
2884 new_hvp[hv] = objects.FillDict(constants.HVC_DEFAULTS[hv], new_hvp[hv])
2885 utils.ForceDictType(new_hvp[hv], constants.HVS_PARAMETER_TYPES)
2887 self.hv_list = cluster.enabled_hypervisors
2889 if self.op.hvparams or self.op.enabled_hypervisors is not None:
2890 # either the enabled list has changed, or the parameters have, validate
2891 for hv_name, hv_params in self.new_hvparams.items():
2892 if ((self.op.hvparams and hv_name in self.op.hvparams) or
2893 (self.op.enabled_hypervisors and
2894 hv_name in self.op.enabled_hypervisors)):
2895 # either this is a new hypervisor, or its parameters have changed
2896 hv_class = hypervisor.GetHypervisor(hv_name)
2897 utils.ForceDictType(hv_params, constants.HVS_PARAMETER_TYPES)
2898 hv_class.CheckParameterSyntax(hv_params)
2899 _CheckHVParams(self, node_list, hv_name, hv_params)
2902 # no need to check any newly-enabled hypervisors, since the
2903 # defaults have already been checked in the above code-block
2904 for os_name, os_hvp in self.new_os_hvp.items():
2905 for hv_name, hv_params in os_hvp.items():
2906 utils.ForceDictType(hv_params, constants.HVS_PARAMETER_TYPES)
2907 # we need to fill in the new os_hvp on top of the actual hv_p
2908 cluster_defaults = self.new_hvparams.get(hv_name, {})
2909 new_osp = objects.FillDict(cluster_defaults, hv_params)
2910 hv_class = hypervisor.GetHypervisor(hv_name)
2911 hv_class.CheckParameterSyntax(new_osp)
2912 _CheckHVParams(self, node_list, hv_name, new_osp)
2914 if self.op.default_iallocator:
2915 alloc_script = utils.FindFile(self.op.default_iallocator,
2916 constants.IALLOCATOR_SEARCH_PATH,
2918 if alloc_script is None:
2919 raise errors.OpPrereqError("Invalid default iallocator script '%s'"
2920 " specified" % self.op.default_iallocator,
2923 def Exec(self, feedback_fn):
2924 """Change the parameters of the cluster.
2927 if self.op.vg_name is not None:
2928 new_volume = self.op.vg_name
2931 if new_volume != self.cfg.GetVGName():
2932 self.cfg.SetVGName(new_volume)
2934 feedback_fn("Cluster LVM configuration already in desired"
2935 " state, not changing")
2936 if self.op.drbd_helper is not None:
2937 new_helper = self.op.drbd_helper
2940 if new_helper != self.cfg.GetDRBDHelper():
2941 self.cfg.SetDRBDHelper(new_helper)
2943 feedback_fn("Cluster DRBD helper already in desired state,"
2945 if self.op.hvparams:
2946 self.cluster.hvparams = self.new_hvparams
2948 self.cluster.os_hvp = self.new_os_hvp
2949 if self.op.enabled_hypervisors is not None:
2950 self.cluster.hvparams = self.new_hvparams
2951 self.cluster.enabled_hypervisors = self.op.enabled_hypervisors
2952 if self.op.beparams:
2953 self.cluster.beparams[constants.PP_DEFAULT] = self.new_beparams
2954 if self.op.nicparams:
2955 self.cluster.nicparams[constants.PP_DEFAULT] = self.new_nicparams
2956 if self.op.osparams:
2957 self.cluster.osparams = self.new_osp
2958 if self.op.ndparams:
2959 self.cluster.ndparams = self.new_ndparams
2961 if self.op.candidate_pool_size is not None:
2962 self.cluster.candidate_pool_size = self.op.candidate_pool_size
2963 # we need to update the pool size here, otherwise the save will fail
2964 _AdjustCandidatePool(self, [])
2966 if self.op.maintain_node_health is not None:
2967 self.cluster.maintain_node_health = self.op.maintain_node_health
2969 if self.op.prealloc_wipe_disks is not None:
2970 self.cluster.prealloc_wipe_disks = self.op.prealloc_wipe_disks
2972 if self.op.add_uids is not None:
2973 uidpool.AddToUidPool(self.cluster.uid_pool, self.op.add_uids)
2975 if self.op.remove_uids is not None:
2976 uidpool.RemoveFromUidPool(self.cluster.uid_pool, self.op.remove_uids)
2978 if self.op.uid_pool is not None:
2979 self.cluster.uid_pool = self.op.uid_pool
2981 if self.op.default_iallocator is not None:
2982 self.cluster.default_iallocator = self.op.default_iallocator
2984 if self.op.reserved_lvs is not None:
2985 self.cluster.reserved_lvs = self.op.reserved_lvs
2987 def helper_os(aname, mods, desc):
2989 lst = getattr(self.cluster, aname)
2990 for key, val in mods:
2991 if key == constants.DDM_ADD:
2993 feedback_fn("OS %s already in %s, ignoring" % (val, desc))
2996 elif key == constants.DDM_REMOVE:
3000 feedback_fn("OS %s not found in %s, ignoring" % (val, desc))
3002 raise errors.ProgrammerError("Invalid modification '%s'" % key)
3004 if self.op.hidden_os:
3005 helper_os("hidden_os", self.op.hidden_os, "hidden")
3007 if self.op.blacklisted_os:
3008 helper_os("blacklisted_os", self.op.blacklisted_os, "blacklisted")
3010 if self.op.master_netdev:
3011 master = self.cfg.GetMasterNode()
3012 feedback_fn("Shutting down master ip on the current netdev (%s)" %
3013 self.cluster.master_netdev)
3014 result = self.rpc.call_node_stop_master(master, False)
3015 result.Raise("Could not disable the master ip")
3016 feedback_fn("Changing master_netdev from %s to %s" %
3017 (self.cluster.master_netdev, self.op.master_netdev))
3018 self.cluster.master_netdev = self.op.master_netdev
3020 self.cfg.Update(self.cluster, feedback_fn)
3022 if self.op.master_netdev:
3023 feedback_fn("Starting the master ip on the new master netdev (%s)" %
3024 self.op.master_netdev)
3025 result = self.rpc.call_node_start_master(master, False, False)
3027 self.LogWarning("Could not re-enable the master ip on"
3028 " the master, please restart manually: %s",
3032 def _UploadHelper(lu, nodes, fname):
3033 """Helper for uploading a file and showing warnings.
3036 if os.path.exists(fname):
3037 result = lu.rpc.call_upload_file(nodes, fname)
3038 for to_node, to_result in result.items():
3039 msg = to_result.fail_msg
3041 msg = ("Copy of file %s to node %s failed: %s" %
3042 (fname, to_node, msg))
3043 lu.proc.LogWarning(msg)
3046 def _RedistributeAncillaryFiles(lu, additional_nodes=None, additional_vm=True):
3047 """Distribute additional files which are part of the cluster configuration.
3049 ConfigWriter takes care of distributing the config and ssconf files, but
3050 there are more files which should be distributed to all nodes. This function
3051 makes sure those are copied.
3053 @param lu: calling logical unit
3054 @param additional_nodes: list of nodes not in the config to distribute to
3055 @type additional_vm: boolean
3056 @param additional_vm: whether the additional nodes are vm-capable or not
3059 # 1. Gather target nodes
3060 myself = lu.cfg.GetNodeInfo(lu.cfg.GetMasterNode())
3061 dist_nodes = lu.cfg.GetOnlineNodeList()
3062 nvm_nodes = lu.cfg.GetNonVmCapableNodeList()
3063 vm_nodes = [name for name in dist_nodes if name not in nvm_nodes]
3064 if additional_nodes is not None:
3065 dist_nodes.extend(additional_nodes)
3067 vm_nodes.extend(additional_nodes)
3068 if myself.name in dist_nodes:
3069 dist_nodes.remove(myself.name)
3070 if myself.name in vm_nodes:
3071 vm_nodes.remove(myself.name)
3073 # 2. Gather files to distribute
3074 dist_files = set([constants.ETC_HOSTS,
3075 constants.SSH_KNOWN_HOSTS_FILE,
3076 constants.RAPI_CERT_FILE,
3077 constants.RAPI_USERS_FILE,
3078 constants.CONFD_HMAC_KEY,
3079 constants.CLUSTER_DOMAIN_SECRET_FILE,
3083 enabled_hypervisors = lu.cfg.GetClusterInfo().enabled_hypervisors
3084 for hv_name in enabled_hypervisors:
3085 hv_class = hypervisor.GetHypervisor(hv_name)
3086 vm_files.update(hv_class.GetAncillaryFiles())
3088 # 3. Perform the files upload
3089 for fname in dist_files:
3090 _UploadHelper(lu, dist_nodes, fname)
3091 for fname in vm_files:
3092 _UploadHelper(lu, vm_nodes, fname)
3095 class LUClusterRedistConf(NoHooksLU):
3096 """Force the redistribution of cluster configuration.
3098 This is a very simple LU.
3103 def ExpandNames(self):
3104 self.needed_locks = {
3105 locking.LEVEL_NODE: locking.ALL_SET,
3107 self.share_locks[locking.LEVEL_NODE] = 1
3109 def Exec(self, feedback_fn):
3110 """Redistribute the configuration.
3113 self.cfg.Update(self.cfg.GetClusterInfo(), feedback_fn)
3114 _RedistributeAncillaryFiles(self)
3117 def _WaitForSync(lu, instance, disks=None, oneshot=False):
3118 """Sleep and poll for an instance's disk to sync.
3121 if not instance.disks or disks is not None and not disks:
3124 disks = _ExpandCheckDisks(instance, disks)
3127 lu.proc.LogInfo("Waiting for instance %s to sync disks." % instance.name)
3129 node = instance.primary_node
3132 lu.cfg.SetDiskID(dev, node)
3134 # TODO: Convert to utils.Retry
3137 degr_retries = 10 # in seconds, as we sleep 1 second each time
3141 cumul_degraded = False
3142 rstats = lu.rpc.call_blockdev_getmirrorstatus(node, disks)
3143 msg = rstats.fail_msg
3145 lu.LogWarning("Can't get any data from node %s: %s", node, msg)
3148 raise errors.RemoteError("Can't contact node %s for mirror data,"
3149 " aborting." % node)
3152 rstats = rstats.payload
3154 for i, mstat in enumerate(rstats):
3156 lu.LogWarning("Can't compute data for node %s/%s",
3157 node, disks[i].iv_name)
3160 cumul_degraded = (cumul_degraded or
3161 (mstat.is_degraded and mstat.sync_percent is None))
3162 if mstat.sync_percent is not None:
3164 if mstat.estimated_time is not None:
3165 rem_time = ("%s remaining (estimated)" %
3166 utils.FormatSeconds(mstat.estimated_time))
3167 max_time = mstat.estimated_time
3169 rem_time = "no time estimate"
3170 lu.proc.LogInfo("- device %s: %5.2f%% done, %s" %
3171 (disks[i].iv_name, mstat.sync_percent, rem_time))
3173 # if we're done but degraded, let's do a few small retries, to
3174 # make sure we see a stable and not transient situation; therefore
3175 # we force restart of the loop
3176 if (done or oneshot) and cumul_degraded and degr_retries > 0:
3177 logging.info("Degraded disks found, %d retries left", degr_retries)
3185 time.sleep(min(60, max_time))
3188 lu.proc.LogInfo("Instance %s's disks are in sync." % instance.name)
3189 return not cumul_degraded
3192 def _CheckDiskConsistency(lu, dev, node, on_primary, ldisk=False):
3193 """Check that mirrors are not degraded.
3195 The ldisk parameter, if True, will change the test from the
3196 is_degraded attribute (which represents overall non-ok status for
3197 the device(s)) to the ldisk (representing the local storage status).
3200 lu.cfg.SetDiskID(dev, node)
3204 if on_primary or dev.AssembleOnSecondary():
3205 rstats = lu.rpc.call_blockdev_find(node, dev)
3206 msg = rstats.fail_msg
3208 lu.LogWarning("Can't find disk on node %s: %s", node, msg)
3210 elif not rstats.payload:
3211 lu.LogWarning("Can't find disk on node %s", node)
3215 result = result and rstats.payload.ldisk_status == constants.LDS_OKAY
3217 result = result and not rstats.payload.is_degraded
3220 for child in dev.children:
3221 result = result and _CheckDiskConsistency(lu, child, node, on_primary)
3226 class LUOobCommand(NoHooksLU):
3227 """Logical unit for OOB handling.
3231 _SKIP_MASTER = (constants.OOB_POWER_OFF, constants.OOB_POWER_CYCLE)
3233 def CheckPrereq(self):
3234 """Check prerequisites.
3237 - the node exists in the configuration
3240 Any errors are signaled by raising errors.OpPrereqError.
3244 self.master_node = self.cfg.GetMasterNode()
3246 if self.op.node_names:
3247 if self.op.command in self._SKIP_MASTER:
3248 if self.master_node in self.op.node_names:
3249 master_node_obj = self.cfg.GetNodeInfo(self.master_node)
3250 master_oob_handler = _SupportsOob(self.cfg, master_node_obj)
3252 if master_oob_handler:
3253 additional_text = ("Run '%s %s %s' if you want to operate on the"
3254 " master regardless") % (master_oob_handler,
3258 additional_text = "The master node does not support out-of-band"
3260 raise errors.OpPrereqError(("Operating on the master node %s is not"
3261 " allowed for %s\n%s") %
3262 (self.master_node, self.op.command,
3263 additional_text), errors.ECODE_INVAL)
3265 self.op.node_names = self.cfg.GetNodeList()
3266 if self.op.command in self._SKIP_MASTER:
3267 self.op.node_names.remove(self.master_node)
3269 if self.op.command in self._SKIP_MASTER:
3270 assert self.master_node not in self.op.node_names
3272 for node_name in self.op.node_names:
3273 node = self.cfg.GetNodeInfo(node_name)
3276 raise errors.OpPrereqError("Node %s not found" % node_name,
3279 self.nodes.append(node)
3281 if (not self.op.ignore_status and
3282 (self.op.command == constants.OOB_POWER_OFF and not node.offline)):
3283 raise errors.OpPrereqError(("Cannot power off node %s because it is"
3284 " not marked offline") % node_name,
3287 def ExpandNames(self):
3288 """Gather locks we need.
3291 if self.op.node_names:
3292 self.op.node_names = [_ExpandNodeName(self.cfg, name)
3293 for name in self.op.node_names]
3294 lock_names = self.op.node_names
3296 lock_names = locking.ALL_SET
3298 self.needed_locks = {
3299 locking.LEVEL_NODE: lock_names,
3302 def Exec(self, feedback_fn):
3303 """Execute OOB and return result if we expect any.
3306 master_node = self.master_node
3309 for node in self.nodes:
3310 node_entry = [(constants.RS_NORMAL, node.name)]
3311 ret.append(node_entry)
3313 oob_program = _SupportsOob(self.cfg, node)
3316 node_entry.append((constants.RS_UNAVAIL, None))
3319 logging.info("Executing out-of-band command '%s' using '%s' on %s",
3320 self.op.command, oob_program, node.name)
3321 result = self.rpc.call_run_oob(master_node, oob_program,
3322 self.op.command, node.name,
3326 self.LogWarning("On node '%s' out-of-band RPC failed with: %s",
3327 node.name, result.fail_msg)
3328 node_entry.append((constants.RS_NODATA, None))
3331 self._CheckPayload(result)
3332 except errors.OpExecError, err:
3333 self.LogWarning("The payload returned by '%s' is not valid: %s",
3335 node_entry.append((constants.RS_NODATA, None))
3337 if self.op.command == constants.OOB_HEALTH:
3338 # For health we should log important events
3339 for item, status in result.payload:
3340 if status in [constants.OOB_STATUS_WARNING,
3341 constants.OOB_STATUS_CRITICAL]:
3342 self.LogWarning("On node '%s' item '%s' has status '%s'",
3343 node.name, item, status)
3345 if self.op.command == constants.OOB_POWER_ON:
3347 elif self.op.command == constants.OOB_POWER_OFF:
3348 node.powered = False
3349 elif self.op.command == constants.OOB_POWER_STATUS:
3350 powered = result.payload[constants.OOB_POWER_STATUS_POWERED]
3351 if powered != node.powered:
3352 logging.warning(("Recorded power state (%s) of node '%s' does not"
3353 " match actual power state (%s)"), node.powered,
3356 # For configuration changing commands we should update the node
3357 if self.op.command in (constants.OOB_POWER_ON,
3358 constants.OOB_POWER_OFF):
3359 self.cfg.Update(node, feedback_fn)
3361 node_entry.append((constants.RS_NORMAL, result.payload))
3365 def _CheckPayload(self, result):
3366 """Checks if the payload is valid.
3368 @param result: RPC result
3369 @raises errors.OpExecError: If payload is not valid
3373 if self.op.command == constants.OOB_HEALTH:
3374 if not isinstance(result.payload, list):
3375 errs.append("command 'health' is expected to return a list but got %s" %
3376 type(result.payload))
3378 for item, status in result.payload:
3379 if status not in constants.OOB_STATUSES:
3380 errs.append("health item '%s' has invalid status '%s'" %
3383 if self.op.command == constants.OOB_POWER_STATUS:
3384 if not isinstance(result.payload, dict):
3385 errs.append("power-status is expected to return a dict but got %s" %
3386 type(result.payload))
3388 if self.op.command in [
3389 constants.OOB_POWER_ON,
3390 constants.OOB_POWER_OFF,
3391 constants.OOB_POWER_CYCLE,
3393 if result.payload is not None:
3394 errs.append("%s is expected to not return payload but got '%s'" %
3395 (self.op.command, result.payload))
3398 raise errors.OpExecError("Check of out-of-band payload failed due to %s" %
3399 utils.CommaJoin(errs))
3403 class LUOsDiagnose(NoHooksLU):
3404 """Logical unit for OS diagnose/query.
3409 _BLK = "blacklisted"
3411 _FIELDS_STATIC = utils.FieldSet()
3412 _FIELDS_DYNAMIC = utils.FieldSet("name", _VLD, "node_status", "variants",
3413 "parameters", "api_versions", _HID, _BLK)
3415 def CheckArguments(self):
3417 raise errors.OpPrereqError("Selective OS query not supported",
3420 _CheckOutputFields(static=self._FIELDS_STATIC,
3421 dynamic=self._FIELDS_DYNAMIC,
3422 selected=self.op.output_fields)
3424 def ExpandNames(self):
3425 # Lock all nodes, in shared mode
3426 # Temporary removal of locks, should be reverted later
3427 # TODO: reintroduce locks when they are lighter-weight
3428 self.needed_locks = {}
3429 #self.share_locks[locking.LEVEL_NODE] = 1
3430 #self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
3433 def _DiagnoseByOS(rlist):
3434 """Remaps a per-node return list into an a per-os per-node dictionary
3436 @param rlist: a map with node names as keys and OS objects as values
3439 @return: a dictionary with osnames as keys and as value another
3440 map, with nodes as keys and tuples of (path, status, diagnose,
3441 variants, parameters, api_versions) as values, eg::
3443 {"debian-etch": {"node1": [(/usr/lib/..., True, "", [], []),
3444 (/srv/..., False, "invalid api")],
3445 "node2": [(/srv/..., True, "", [], [])]}
3450 # we build here the list of nodes that didn't fail the RPC (at RPC
3451 # level), so that nodes with a non-responding node daemon don't
3452 # make all OSes invalid
3453 good_nodes = [node_name for node_name in rlist
3454 if not rlist[node_name].fail_msg]
3455 for node_name, nr in rlist.items():
3456 if nr.fail_msg or not nr.payload:
3458 for (name, path, status, diagnose, variants,
3459 params, api_versions) in nr.payload:
3460 if name not in all_os:
3461 # build a list of nodes for this os containing empty lists
3462 # for each node in node_list
3464 for nname in good_nodes:
3465 all_os[name][nname] = []
3466 # convert params from [name, help] to (name, help)
3467 params = [tuple(v) for v in params]
3468 all_os[name][node_name].append((path, status, diagnose,
3469 variants, params, api_versions))
3472 def Exec(self, feedback_fn):
3473 """Compute the list of OSes.
3476 valid_nodes = [node.name
3477 for node in self.cfg.GetAllNodesInfo().values()
3478 if not node.offline and node.vm_capable]
3479 node_data = self.rpc.call_os_diagnose(valid_nodes)
3480 pol = self._DiagnoseByOS(node_data)
3482 cluster = self.cfg.GetClusterInfo()
3484 for os_name in utils.NiceSort(pol.keys()):
3485 os_data = pol[os_name]
3488 (variants, params, api_versions) = null_state = (set(), set(), set())
3489 for idx, osl in enumerate(os_data.values()):
3490 valid = bool(valid and osl and osl[0][1])
3492 (variants, params, api_versions) = null_state
3494 node_variants, node_params, node_api = osl[0][3:6]
3495 if idx == 0: # first entry
3496 variants = set(node_variants)
3497 params = set(node_params)
3498 api_versions = set(node_api)
3499 else: # keep consistency
3500 variants.intersection_update(node_variants)
3501 params.intersection_update(node_params)
3502 api_versions.intersection_update(node_api)
3504 is_hid = os_name in cluster.hidden_os
3505 is_blk = os_name in cluster.blacklisted_os
3506 if ((self._HID not in self.op.output_fields and is_hid) or
3507 (self._BLK not in self.op.output_fields and is_blk) or
3508 (self._VLD not in self.op.output_fields and not valid)):
3511 for field in self.op.output_fields:
3514 elif field == self._VLD:
3516 elif field == "node_status":
3517 # this is just a copy of the dict
3519 for node_name, nos_list in os_data.items():
3520 val[node_name] = nos_list
3521 elif field == "variants":
3522 val = utils.NiceSort(list(variants))
3523 elif field == "parameters":
3525 elif field == "api_versions":
3526 val = list(api_versions)
3527 elif field == self._HID:
3529 elif field == self._BLK:
3532 raise errors.ParameterError(field)
3539 class LUNodeRemove(LogicalUnit):
3540 """Logical unit for removing a node.
3543 HPATH = "node-remove"
3544 HTYPE = constants.HTYPE_NODE
3546 def BuildHooksEnv(self):
3549 This doesn't run on the target node in the pre phase as a failed
3550 node would then be impossible to remove.
3554 "OP_TARGET": self.op.node_name,
3555 "NODE_NAME": self.op.node_name,
3557 all_nodes = self.cfg.GetNodeList()
3559 all_nodes.remove(self.op.node_name)
3561 logging.warning("Node %s which is about to be removed not found"
3562 " in the all nodes list", self.op.node_name)
3563 return env, all_nodes, all_nodes
3565 def CheckPrereq(self):
3566 """Check prerequisites.
3569 - the node exists in the configuration
3570 - it does not have primary or secondary instances
3571 - it's not the master
3573 Any errors are signaled by raising errors.OpPrereqError.
3576 self.op.node_name = _ExpandNodeName(self.cfg, self.op.node_name)
3577 node = self.cfg.GetNodeInfo(self.op.node_name)
3578 assert node is not None
3580 instance_list = self.cfg.GetInstanceList()
3582 masternode = self.cfg.GetMasterNode()
3583 if node.name == masternode:
3584 raise errors.OpPrereqError("Node is the master node,"
3585 " you need to failover first.",
3588 for instance_name in instance_list:
3589 instance = self.cfg.GetInstanceInfo(instance_name)
3590 if node.name in instance.all_nodes:
3591 raise errors.OpPrereqError("Instance %s is still running on the node,"
3592 " please remove first." % instance_name,
3594 self.op.node_name = node.name
3597 def Exec(self, feedback_fn):
3598 """Removes the node from the cluster.
3602 logging.info("Stopping the node daemon and removing configs from node %s",
3605 modify_ssh_setup = self.cfg.GetClusterInfo().modify_ssh_setup
3607 # Promote nodes to master candidate as needed
3608 _AdjustCandidatePool(self, exceptions=[node.name])
3609 self.context.RemoveNode(node.name)
3611 # Run post hooks on the node before it's removed
3612 hm = self.proc.hmclass(self.rpc.call_hooks_runner, self)
3614 hm.RunPhase(constants.HOOKS_PHASE_POST, [node.name])
3616 # pylint: disable-msg=W0702
3617 self.LogWarning("Errors occurred running hooks on %s" % node.name)
3619 result = self.rpc.call_node_leave_cluster(node.name, modify_ssh_setup)
3620 msg = result.fail_msg
3622 self.LogWarning("Errors encountered on the remote node while leaving"
3623 " the cluster: %s", msg)
3625 # Remove node from our /etc/hosts
3626 if self.cfg.GetClusterInfo().modify_etc_hosts:
3627 master_node = self.cfg.GetMasterNode()
3628 result = self.rpc.call_etc_hosts_modify(master_node,
3629 constants.ETC_HOSTS_REMOVE,
3631 result.Raise("Can't update hosts file with new host data")
3632 _RedistributeAncillaryFiles(self)
3635 class _NodeQuery(_QueryBase):
3636 FIELDS = query.NODE_FIELDS
3638 def ExpandNames(self, lu):
3639 lu.needed_locks = {}
3640 lu.share_locks[locking.LEVEL_NODE] = 1
3643 self.wanted = _GetWantedNodes(lu, self.names)
3645 self.wanted = locking.ALL_SET
3647 self.do_locking = (self.use_locking and
3648 query.NQ_LIVE in self.requested_data)
3651 # if we don't request only static fields, we need to lock the nodes
3652 lu.needed_locks[locking.LEVEL_NODE] = self.wanted
3654 def DeclareLocks(self, lu, level):
3657 def _GetQueryData(self, lu):
3658 """Computes the list of nodes and their attributes.
3661 all_info = lu.cfg.GetAllNodesInfo()
3663 nodenames = self._GetNames(lu, all_info.keys(), locking.LEVEL_NODE)
3665 # Gather data as requested
3666 if query.NQ_LIVE in self.requested_data:
3667 # filter out non-vm_capable nodes
3668 toquery_nodes = [name for name in nodenames if all_info[name].vm_capable]
3670 node_data = lu.rpc.call_node_info(toquery_nodes, lu.cfg.GetVGName(),
3671 lu.cfg.GetHypervisorType())
3672 live_data = dict((name, nresult.payload)
3673 for (name, nresult) in node_data.items()
3674 if not nresult.fail_msg and nresult.payload)
3678 if query.NQ_INST in self.requested_data:
3679 node_to_primary = dict([(name, set()) for name in nodenames])
3680 node_to_secondary = dict([(name, set()) for name in nodenames])
3682 inst_data = lu.cfg.GetAllInstancesInfo()
3684 for inst in inst_data.values():
3685 if inst.primary_node in node_to_primary:
3686 node_to_primary[inst.primary_node].add(inst.name)
3687 for secnode in inst.secondary_nodes:
3688 if secnode in node_to_secondary:
3689 node_to_secondary[secnode].add(inst.name)
3691 node_to_primary = None
3692 node_to_secondary = None
3694 if query.NQ_OOB in self.requested_data:
3695 oob_support = dict((name, bool(_SupportsOob(lu.cfg, node)))
3696 for name, node in all_info.iteritems())
3700 if query.NQ_GROUP in self.requested_data:
3701 groups = lu.cfg.GetAllNodeGroupsInfo()
3705 return query.NodeQueryData([all_info[name] for name in nodenames],
3706 live_data, lu.cfg.GetMasterNode(),
3707 node_to_primary, node_to_secondary, groups,
3708 oob_support, lu.cfg.GetClusterInfo())
3711 class LUNodeQuery(NoHooksLU):
3712 """Logical unit for querying nodes.
3715 # pylint: disable-msg=W0142
3718 def CheckArguments(self):
3719 self.nq = _NodeQuery(qlang.MakeSimpleFilter("name", self.op.names),
3720 self.op.output_fields, self.op.use_locking)
3722 def ExpandNames(self):
3723 self.nq.ExpandNames(self)
3725 def Exec(self, feedback_fn):
3726 return self.nq.OldStyleQuery(self)
3729 class LUNodeQueryvols(NoHooksLU):
3730 """Logical unit for getting volumes on node(s).
3734 _FIELDS_DYNAMIC = utils.FieldSet("phys", "vg", "name", "size", "instance")
3735 _FIELDS_STATIC = utils.FieldSet("node")
3737 def CheckArguments(self):
3738 _CheckOutputFields(static=self._FIELDS_STATIC,
3739 dynamic=self._FIELDS_DYNAMIC,
3740 selected=self.op.output_fields)
3742 def ExpandNames(self):
3743 self.needed_locks = {}
3744 self.share_locks[locking.LEVEL_NODE] = 1
3745 if not self.op.nodes:
3746 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
3748 self.needed_locks[locking.LEVEL_NODE] = \
3749 _GetWantedNodes(self, self.op.nodes)
3751 def Exec(self, feedback_fn):
3752 """Computes the list of nodes and their attributes.
3755 nodenames = self.acquired_locks[locking.LEVEL_NODE]
3756 volumes = self.rpc.call_node_volumes(nodenames)
3758 ilist = [self.cfg.GetInstanceInfo(iname) for iname
3759 in self.cfg.GetInstanceList()]
3761 lv_by_node = dict([(inst, inst.MapLVsByNode()) for inst in ilist])
3764 for node in nodenames:
3765 nresult = volumes[node]
3768 msg = nresult.fail_msg
3770 self.LogWarning("Can't compute volume data on node %s: %s", node, msg)
3773 node_vols = nresult.payload[:]
3774 node_vols.sort(key=lambda vol: vol['dev'])
3776 for vol in node_vols:
3778 for field in self.op.output_fields:
3781 elif field == "phys":
3785 elif field == "name":
3787 elif field == "size":
3788 val = int(float(vol['size']))
3789 elif field == "instance":
3791 if node not in lv_by_node[inst]:
3793 if vol['name'] in lv_by_node[inst][node]:
3799 raise errors.ParameterError(field)
3800 node_output.append(str(val))
3802 output.append(node_output)
3807 class LUNodeQueryStorage(NoHooksLU):
3808 """Logical unit for getting information on storage units on node(s).
3811 _FIELDS_STATIC = utils.FieldSet(constants.SF_NODE)
3814 def CheckArguments(self):
3815 _CheckOutputFields(static=self._FIELDS_STATIC,
3816 dynamic=utils.FieldSet(*constants.VALID_STORAGE_FIELDS),
3817 selected=self.op.output_fields)
3819 def ExpandNames(self):
3820 self.needed_locks = {}
3821 self.share_locks[locking.LEVEL_NODE] = 1
3824 self.needed_locks[locking.LEVEL_NODE] = \
3825 _GetWantedNodes(self, self.op.nodes)
3827 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
3829 def Exec(self, feedback_fn):
3830 """Computes the list of nodes and their attributes.
3833 self.nodes = self.acquired_locks[locking.LEVEL_NODE]
3835 # Always get name to sort by
3836 if constants.SF_NAME in self.op.output_fields:
3837 fields = self.op.output_fields[:]
3839 fields = [constants.SF_NAME] + self.op.output_fields
3841 # Never ask for node or type as it's only known to the LU
3842 for extra in [constants.SF_NODE, constants.SF_TYPE]:
3843 while extra in fields:
3844 fields.remove(extra)
3846 field_idx = dict([(name, idx) for (idx, name) in enumerate(fields)])
3847 name_idx = field_idx[constants.SF_NAME]
3849 st_args = _GetStorageTypeArgs(self.cfg, self.op.storage_type)
3850 data = self.rpc.call_storage_list(self.nodes,
3851 self.op.storage_type, st_args,
3852 self.op.name, fields)
3856 for node in utils.NiceSort(self.nodes):
3857 nresult = data[node]
3861 msg = nresult.fail_msg
3863 self.LogWarning("Can't get storage data from node %s: %s", node, msg)
3866 rows = dict([(row[name_idx], row) for row in nresult.payload])
3868 for name in utils.NiceSort(rows.keys()):
3873 for field in self.op.output_fields:
3874 if field == constants.SF_NODE:
3876 elif field == constants.SF_TYPE:
3877 val = self.op.storage_type
3878 elif field in field_idx:
3879 val = row[field_idx[field]]
3881 raise errors.ParameterError(field)
3890 class _InstanceQuery(_QueryBase):
3891 FIELDS = query.INSTANCE_FIELDS
3893 def ExpandNames(self, lu):
3894 lu.needed_locks = {}
3895 lu.share_locks[locking.LEVEL_INSTANCE] = 1
3896 lu.share_locks[locking.LEVEL_NODE] = 1
3899 self.wanted = _GetWantedInstances(lu, self.names)
3901 self.wanted = locking.ALL_SET
3903 self.do_locking = (self.use_locking and
3904 query.IQ_LIVE in self.requested_data)
3906 lu.needed_locks[locking.LEVEL_INSTANCE] = self.wanted
3907 lu.needed_locks[locking.LEVEL_NODE] = []
3908 lu.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3910 def DeclareLocks(self, lu, level):
3911 if level == locking.LEVEL_NODE and self.do_locking:
3912 lu._LockInstancesNodes() # pylint: disable-msg=W0212
3914 def _GetQueryData(self, lu):
3915 """Computes the list of instances and their attributes.
3918 cluster = lu.cfg.GetClusterInfo()
3919 all_info = lu.cfg.GetAllInstancesInfo()
3921 instance_names = self._GetNames(lu, all_info.keys(), locking.LEVEL_INSTANCE)
3923 instance_list = [all_info[name] for name in instance_names]
3924 nodes = frozenset(itertools.chain(*(inst.all_nodes
3925 for inst in instance_list)))
3926 hv_list = list(set([inst.hypervisor for inst in instance_list]))
3929 wrongnode_inst = set()
3931 # Gather data as requested
3932 if self.requested_data & set([query.IQ_LIVE, query.IQ_CONSOLE]):
3934 node_data = lu.rpc.call_all_instances_info(nodes, hv_list)
3936 result = node_data[name]
3938 # offline nodes will be in both lists
3939 assert result.fail_msg
3940 offline_nodes.append(name)
3942 bad_nodes.append(name)
3943 elif result.payload:
3944 for inst in result.payload:
3945 if all_info[inst].primary_node == name:
3946 live_data.update(result.payload)
3948 wrongnode_inst.add(inst)
3949 # else no instance is alive
3953 if query.IQ_DISKUSAGE in self.requested_data:
3954 disk_usage = dict((inst.name,
3955 _ComputeDiskSize(inst.disk_template,
3956 [{"size": disk.size}
3957 for disk in inst.disks]))
3958 for inst in instance_list)
3962 if query.IQ_CONSOLE in self.requested_data:
3964 for inst in instance_list:
3965 if inst.name in live_data:
3966 # Instance is running
3967 consinfo[inst.name] = _GetInstanceConsole(cluster, inst)
3969 consinfo[inst.name] = None
3970 assert set(consinfo.keys()) == set(instance_names)
3974 return query.InstanceQueryData(instance_list, lu.cfg.GetClusterInfo(),
3975 disk_usage, offline_nodes, bad_nodes,
3976 live_data, wrongnode_inst, consinfo)
3979 class LUQuery(NoHooksLU):
3980 """Query for resources/items of a certain kind.
3983 # pylint: disable-msg=W0142
3986 def CheckArguments(self):
3987 qcls = _GetQueryImplementation(self.op.what)
3989 self.impl = qcls(self.op.filter, self.op.fields, False)
3991 def ExpandNames(self):
3992 self.impl.ExpandNames(self)
3994 def DeclareLocks(self, level):
3995 self.impl.DeclareLocks(self, level)
3997 def Exec(self, feedback_fn):
3998 return self.impl.NewStyleQuery(self)
4001 class LUQueryFields(NoHooksLU):
4002 """Query for resources/items of a certain kind.
4005 # pylint: disable-msg=W0142
4008 def CheckArguments(self):
4009 self.qcls = _GetQueryImplementation(self.op.what)
4011 def ExpandNames(self):
4012 self.needed_locks = {}
4014 def Exec(self, feedback_fn):
4015 return self.qcls.FieldsQuery(self.op.fields)
4018 class LUNodeModifyStorage(NoHooksLU):
4019 """Logical unit for modifying a storage volume on a node.
4024 def CheckArguments(self):
4025 self.op.node_name = _ExpandNodeName(self.cfg, self.op.node_name)
4027 storage_type = self.op.storage_type
4030 modifiable = constants.MODIFIABLE_STORAGE_FIELDS[storage_type]
4032 raise errors.OpPrereqError("Storage units of type '%s' can not be"
4033 " modified" % storage_type,
4036 diff = set(self.op.changes.keys()) - modifiable
4038 raise errors.OpPrereqError("The following fields can not be modified for"
4039 " storage units of type '%s': %r" %
4040 (storage_type, list(diff)),
4043 def ExpandNames(self):
4044 self.needed_locks = {
4045 locking.LEVEL_NODE: self.op.node_name,
4048 def Exec(self, feedback_fn):
4049 """Computes the list of nodes and their attributes.
4052 st_args = _GetStorageTypeArgs(self.cfg, self.op.storage_type)
4053 result = self.rpc.call_storage_modify(self.op.node_name,
4054 self.op.storage_type, st_args,
4055 self.op.name, self.op.changes)
4056 result.Raise("Failed to modify storage unit '%s' on %s" %
4057 (self.op.name, self.op.node_name))
4060 class LUNodeAdd(LogicalUnit):
4061 """Logical unit for adding node to the cluster.
4065 HTYPE = constants.HTYPE_NODE
4066 _NFLAGS = ["master_capable", "vm_capable"]
4068 def CheckArguments(self):
4069 self.primary_ip_family = self.cfg.GetPrimaryIPFamily()
4070 # validate/normalize the node name
4071 self.hostname = netutils.GetHostname(name=self.op.node_name,
4072 family=self.primary_ip_family)
4073 self.op.node_name = self.hostname.name
4074 if self.op.readd and self.op.group:
4075 raise errors.OpPrereqError("Cannot pass a node group when a node is"
4076 " being readded", errors.ECODE_INVAL)
4078 def BuildHooksEnv(self):
4081 This will run on all nodes before, and on all nodes + the new node after.
4085 "OP_TARGET": self.op.node_name,
4086 "NODE_NAME": self.op.node_name,
4087 "NODE_PIP": self.op.primary_ip,
4088 "NODE_SIP": self.op.secondary_ip,
4089 "MASTER_CAPABLE": str(self.op.master_capable),
4090 "VM_CAPABLE": str(self.op.vm_capable),
4092 nodes_0 = self.cfg.GetNodeList()
4093 nodes_1 = nodes_0 + [self.op.node_name, ]
4094 return env, nodes_0, nodes_1
4096 def CheckPrereq(self):
4097 """Check prerequisites.
4100 - the new node is not already in the config
4102 - its parameters (single/dual homed) matches the cluster
4104 Any errors are signaled by raising errors.OpPrereqError.
4108 hostname = self.hostname
4109 node = hostname.name
4110 primary_ip = self.op.primary_ip = hostname.ip
4111 if self.op.secondary_ip is None:
4112 if self.primary_ip_family == netutils.IP6Address.family:
4113 raise errors.OpPrereqError("When using a IPv6 primary address, a valid"
4114 " IPv4 address must be given as secondary",
4116 self.op.secondary_ip = primary_ip
4118 secondary_ip = self.op.secondary_ip
4119 if not netutils.IP4Address.IsValid(secondary_ip):
4120 raise errors.OpPrereqError("Secondary IP (%s) needs to be a valid IPv4"
4121 " address" % secondary_ip, errors.ECODE_INVAL)
4123 node_list = cfg.GetNodeList()
4124 if not self.op.readd and node in node_list:
4125 raise errors.OpPrereqError("Node %s is already in the configuration" %
4126 node, errors.ECODE_EXISTS)
4127 elif self.op.readd and node not in node_list:
4128 raise errors.OpPrereqError("Node %s is not in the configuration" % node,
4131 self.changed_primary_ip = False
4133 for existing_node_name in node_list:
4134 existing_node = cfg.GetNodeInfo(existing_node_name)
4136 if self.op.readd and node == existing_node_name:
4137 if existing_node.secondary_ip != secondary_ip:
4138 raise errors.OpPrereqError("Readded node doesn't have the same IP"
4139 " address configuration as before",
4141 if existing_node.primary_ip != primary_ip:
4142 self.changed_primary_ip = True
4146 if (existing_node.primary_ip == primary_ip or
4147 existing_node.secondary_ip == primary_ip or
4148 existing_node.primary_ip == secondary_ip or
4149 existing_node.secondary_ip == secondary_ip):
4150 raise errors.OpPrereqError("New node ip address(es) conflict with"
4151 " existing node %s" % existing_node.name,
4152 errors.ECODE_NOTUNIQUE)
4154 # After this 'if' block, None is no longer a valid value for the
4155 # _capable op attributes
4157 old_node = self.cfg.GetNodeInfo(node)
4158 assert old_node is not None, "Can't retrieve locked node %s" % node
4159 for attr in self._NFLAGS:
4160 if getattr(self.op, attr) is None:
4161 setattr(self.op, attr, getattr(old_node, attr))
4163 for attr in self._NFLAGS:
4164 if getattr(self.op, attr) is None:
4165 setattr(self.op, attr, True)
4167 if self.op.readd and not self.op.vm_capable:
4168 pri, sec = cfg.GetNodeInstances(node)
4170 raise errors.OpPrereqError("Node %s being re-added with vm_capable"
4171 " flag set to false, but it already holds"
4172 " instances" % node,
4175 # check that the type of the node (single versus dual homed) is the
4176 # same as for the master
4177 myself = cfg.GetNodeInfo(self.cfg.GetMasterNode())
4178 master_singlehomed = myself.secondary_ip == myself.primary_ip
4179 newbie_singlehomed = secondary_ip == primary_ip
4180 if master_singlehomed != newbie_singlehomed:
4181 if master_singlehomed:
4182 raise errors.OpPrereqError("The master has no secondary ip but the"
4183 " new node has one",
4186 raise errors.OpPrereqError("The master has a secondary ip but the"
4187 " new node doesn't have one",
4190 # checks reachability
4191 if not netutils.TcpPing(primary_ip, constants.DEFAULT_NODED_PORT):
4192 raise errors.OpPrereqError("Node not reachable by ping",
4193 errors.ECODE_ENVIRON)
4195 if not newbie_singlehomed:
4196 # check reachability from my secondary ip to newbie's secondary ip
4197 if not netutils.TcpPing(secondary_ip, constants.DEFAULT_NODED_PORT,
4198 source=myself.secondary_ip):
4199 raise errors.OpPrereqError("Node secondary ip not reachable by TCP"
4200 " based ping to node daemon port",
4201 errors.ECODE_ENVIRON)
4208 if self.op.master_capable:
4209 self.master_candidate = _DecideSelfPromotion(self, exceptions=exceptions)
4211 self.master_candidate = False
4214 self.new_node = old_node
4216 node_group = cfg.LookupNodeGroup(self.op.group)
4217 self.new_node = objects.Node(name=node,
4218 primary_ip=primary_ip,
4219 secondary_ip=secondary_ip,
4220 master_candidate=self.master_candidate,
4221 offline=False, drained=False,
4224 if self.op.ndparams:
4225 utils.ForceDictType(self.op.ndparams, constants.NDS_PARAMETER_TYPES)
4227 def Exec(self, feedback_fn):
4228 """Adds the new node to the cluster.
4231 new_node = self.new_node
4232 node = new_node.name
4234 # We adding a new node so we assume it's powered
4235 new_node.powered = True
4237 # for re-adds, reset the offline/drained/master-candidate flags;
4238 # we need to reset here, otherwise offline would prevent RPC calls
4239 # later in the procedure; this also means that if the re-add
4240 # fails, we are left with a non-offlined, broken node
4242 new_node.drained = new_node.offline = False # pylint: disable-msg=W0201
4243 self.LogInfo("Readding a node, the offline/drained flags were reset")
4244 # if we demote the node, we do cleanup later in the procedure
4245 new_node.master_candidate = self.master_candidate
4246 if self.changed_primary_ip:
4247 new_node.primary_ip = self.op.primary_ip
4249 # copy the master/vm_capable flags
4250 for attr in self._NFLAGS:
4251 setattr(new_node, attr, getattr(self.op, attr))
4253 # notify the user about any possible mc promotion
4254 if new_node.master_candidate:
4255 self.LogInfo("Node will be a master candidate")
4257 if self.op.ndparams:
4258 new_node.ndparams = self.op.ndparams
4260 new_node.ndparams = {}
4262 # check connectivity
4263 result = self.rpc.call_version([node])[node]
4264 result.Raise("Can't get version information from node %s" % node)
4265 if constants.PROTOCOL_VERSION == result.payload:
4266 logging.info("Communication to node %s fine, sw version %s match",
4267 node, result.payload)
4269 raise errors.OpExecError("Version mismatch master version %s,"
4270 " node version %s" %
4271 (constants.PROTOCOL_VERSION, result.payload))
4273 # Add node to our /etc/hosts, and add key to known_hosts
4274 if self.cfg.GetClusterInfo().modify_etc_hosts:
4275 master_node = self.cfg.GetMasterNode()
4276 result = self.rpc.call_etc_hosts_modify(master_node,
4277 constants.ETC_HOSTS_ADD,
4280 result.Raise("Can't update hosts file with new host data")
4282 if new_node.secondary_ip != new_node.primary_ip:
4283 _CheckNodeHasSecondaryIP(self, new_node.name, new_node.secondary_ip,
4286 node_verify_list = [self.cfg.GetMasterNode()]
4287 node_verify_param = {
4288 constants.NV_NODELIST: [node],
4289 # TODO: do a node-net-test as well?
4292 result = self.rpc.call_node_verify(node_verify_list, node_verify_param,
4293 self.cfg.GetClusterName())
4294 for verifier in node_verify_list:
4295 result[verifier].Raise("Cannot communicate with node %s" % verifier)
4296 nl_payload = result[verifier].payload[constants.NV_NODELIST]
4298 for failed in nl_payload:
4299 feedback_fn("ssh/hostname verification failed"
4300 " (checking from %s): %s" %
4301 (verifier, nl_payload[failed]))
4302 raise errors.OpExecError("ssh/hostname verification failed.")
4305 _RedistributeAncillaryFiles(self)
4306 self.context.ReaddNode(new_node)
4307 # make sure we redistribute the config
4308 self.cfg.Update(new_node, feedback_fn)
4309 # and make sure the new node will not have old files around
4310 if not new_node.master_candidate:
4311 result = self.rpc.call_node_demote_from_mc(new_node.name)
4312 msg = result.fail_msg
4314 self.LogWarning("Node failed to demote itself from master"
4315 " candidate status: %s" % msg)
4317 _RedistributeAncillaryFiles(self, additional_nodes=[node],
4318 additional_vm=self.op.vm_capable)
4319 self.context.AddNode(new_node, self.proc.GetECId())
4322 class LUNodeSetParams(LogicalUnit):
4323 """Modifies the parameters of a node.
4325 @cvar _F2R: a dictionary from tuples of flags (mc, drained, offline)
4326 to the node role (as _ROLE_*)
4327 @cvar _R2F: a dictionary from node role to tuples of flags
4328 @cvar _FLAGS: a list of attribute names corresponding to the flags
4331 HPATH = "node-modify"
4332 HTYPE = constants.HTYPE_NODE
4334 (_ROLE_CANDIDATE, _ROLE_DRAINED, _ROLE_OFFLINE, _ROLE_REGULAR) = range(4)
4336 (True, False, False): _ROLE_CANDIDATE,
4337 (False, True, False): _ROLE_DRAINED,
4338 (False, False, True): _ROLE_OFFLINE,
4339 (False, False, False): _ROLE_REGULAR,
4341 _R2F = dict((v, k) for k, v in _F2R.items())
4342 _FLAGS = ["master_candidate", "drained", "offline"]
4344 def CheckArguments(self):
4345 self.op.node_name = _ExpandNodeName(self.cfg, self.op.node_name)
4346 all_mods = [self.op.offline, self.op.master_candidate, self.op.drained,
4347 self.op.master_capable, self.op.vm_capable,
4348 self.op.secondary_ip, self.op.ndparams]
4349 if all_mods.count(None) == len(all_mods):
4350 raise errors.OpPrereqError("Please pass at least one modification",
4352 if all_mods.count(True) > 1:
4353 raise errors.OpPrereqError("Can't set the node into more than one"
4354 " state at the same time",
4357 # Boolean value that tells us whether we might be demoting from MC
4358 self.might_demote = (self.op.master_candidate == False or
4359 self.op.offline == True or
4360 self.op.drained == True or
4361 self.op.master_capable == False)
4363 if self.op.secondary_ip:
4364 if not netutils.IP4Address.IsValid(self.op.secondary_ip):
4365 raise errors.OpPrereqError("Secondary IP (%s) needs to be a valid IPv4"
4366 " address" % self.op.secondary_ip,
4369 self.lock_all = self.op.auto_promote and self.might_demote
4370 self.lock_instances = self.op.secondary_ip is not None
4372 def ExpandNames(self):
4374 self.needed_locks = {locking.LEVEL_NODE: locking.ALL_SET}
4376 self.needed_locks = {locking.LEVEL_NODE: self.op.node_name}
4378 if self.lock_instances:
4379 self.needed_locks[locking.LEVEL_INSTANCE] = locking.ALL_SET
4381 def DeclareLocks(self, level):
4382 # If we have locked all instances, before waiting to lock nodes, release
4383 # all the ones living on nodes unrelated to the current operation.
4384 if level == locking.LEVEL_NODE and self.lock_instances:
4385 instances_release = []
4387 self.affected_instances = []
4388 if self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET:
4389 for instance_name in self.acquired_locks[locking.LEVEL_INSTANCE]:
4390 instance = self.context.cfg.GetInstanceInfo(instance_name)
4391 i_mirrored = instance.disk_template in constants.DTS_NET_MIRROR
4392 if i_mirrored and self.op.node_name in instance.all_nodes:
4393 instances_keep.append(instance_name)
4394 self.affected_instances.append(instance)
4396 instances_release.append(instance_name)
4397 if instances_release:
4398 self.context.glm.release(locking.LEVEL_INSTANCE, instances_release)
4399 self.acquired_locks[locking.LEVEL_INSTANCE] = instances_keep
4401 def BuildHooksEnv(self):
4404 This runs on the master node.
4408 "OP_TARGET": self.op.node_name,
4409 "MASTER_CANDIDATE": str(self.op.master_candidate),
4410 "OFFLINE": str(self.op.offline),
4411 "DRAINED": str(self.op.drained),
4412 "MASTER_CAPABLE": str(self.op.master_capable),
4413 "VM_CAPABLE": str(self.op.vm_capable),
4415 nl = [self.cfg.GetMasterNode(),
4419 def CheckPrereq(self):
4420 """Check prerequisites.
4422 This only checks the instance list against the existing names.
4425 node = self.node = self.cfg.GetNodeInfo(self.op.node_name)
4427 if (self.op.master_candidate is not None or
4428 self.op.drained is not None or
4429 self.op.offline is not None):
4430 # we can't change the master's node flags
4431 if self.op.node_name == self.cfg.GetMasterNode():
4432 raise errors.OpPrereqError("The master role can be changed"
4433 " only via master-failover",
4436 if self.op.master_candidate and not node.master_capable:
4437 raise errors.OpPrereqError("Node %s is not master capable, cannot make"
4438 " it a master candidate" % node.name,
4441 if self.op.vm_capable == False:
4442 (ipri, isec) = self.cfg.GetNodeInstances(self.op.node_name)
4444 raise errors.OpPrereqError("Node %s hosts instances, cannot unset"
4445 " the vm_capable flag" % node.name,
4448 if node.master_candidate and self.might_demote and not self.lock_all:
4449 assert not self.op.auto_promote, "auto_promote set but lock_all not"
4450 # check if after removing the current node, we're missing master
4452 (mc_remaining, mc_should, _) = \
4453 self.cfg.GetMasterCandidateStats(exceptions=[node.name])
4454 if mc_remaining < mc_should:
4455 raise errors.OpPrereqError("Not enough master candidates, please"
4456 " pass auto promote option to allow"
4457 " promotion", errors.ECODE_STATE)
4459 self.old_flags = old_flags = (node.master_candidate,
4460 node.drained, node.offline)
4461 assert old_flags in self._F2R, "Un-handled old flags %s" % str(old_flags)
4462 self.old_role = old_role = self._F2R[old_flags]
4464 # Check for ineffective changes
4465 for attr in self._FLAGS:
4466 if (getattr(self.op, attr) == False and getattr(node, attr) == False):
4467 self.LogInfo("Ignoring request to unset flag %s, already unset", attr)
4468 setattr(self.op, attr, None)
4470 # Past this point, any flag change to False means a transition
4471 # away from the respective state, as only real changes are kept
4473 # TODO: We might query the real power state if it supports OOB
4474 if _SupportsOob(self.cfg, node):
4475 if self.op.offline is False and not (node.powered or
4476 self.op.powered == True):
4477 raise errors.OpPrereqError(("Please power on node %s first before you"
4478 " can reset offline state") %
4480 elif self.op.powered is not None:
4481 raise errors.OpPrereqError(("Unable to change powered state for node %s"
4482 " which does not support out-of-band"
4483 " handling") % self.op.node_name)
4485 # If we're being deofflined/drained, we'll MC ourself if needed
4486 if (self.op.drained == False or self.op.offline == False or
4487 (self.op.master_capable and not node.master_capable)):
4488 if _DecideSelfPromotion(self):
4489 self.op.master_candidate = True
4490 self.LogInfo("Auto-promoting node to master candidate")
4492 # If we're no longer master capable, we'll demote ourselves from MC
4493 if self.op.master_capable == False and node.master_candidate:
4494 self.LogInfo("Demoting from master candidate")
4495 self.op.master_candidate = False
4498 assert [getattr(self.op, attr) for attr in self._FLAGS].count(True) <= 1
4499 if self.op.master_candidate:
4500 new_role = self._ROLE_CANDIDATE
4501 elif self.op.drained:
4502 new_role = self._ROLE_DRAINED
4503 elif self.op.offline:
4504 new_role = self._ROLE_OFFLINE
4505 elif False in [self.op.master_candidate, self.op.drained, self.op.offline]:
4506 # False is still in new flags, which means we're un-setting (the
4508 new_role = self._ROLE_REGULAR
4509 else: # no new flags, nothing, keep old role
4512 self.new_role = new_role
4514 if old_role == self._ROLE_OFFLINE and new_role != old_role:
4515 # Trying to transition out of offline status
4516 result = self.rpc.call_version([node.name])[node.name]
4518 raise errors.OpPrereqError("Node %s is being de-offlined but fails"
4519 " to report its version: %s" %
4520 (node.name, result.fail_msg),
4523 self.LogWarning("Transitioning node from offline to online state"
4524 " without using re-add. Please make sure the node"
4527 if self.op.secondary_ip:
4528 # Ok even without locking, because this can't be changed by any LU
4529 master = self.cfg.GetNodeInfo(self.cfg.GetMasterNode())
4530 master_singlehomed = master.secondary_ip == master.primary_ip
4531 if master_singlehomed and self.op.secondary_ip:
4532 raise errors.OpPrereqError("Cannot change the secondary ip on a single"
4533 " homed cluster", errors.ECODE_INVAL)
4536 if self.affected_instances:
4537 raise errors.OpPrereqError("Cannot change secondary ip: offline"
4538 " node has instances (%s) configured"
4539 " to use it" % self.affected_instances)
4541 # On online nodes, check that no instances are running, and that
4542 # the node has the new ip and we can reach it.
4543 for instance in self.affected_instances:
4544 _CheckInstanceDown(self, instance, "cannot change secondary ip")
4546 _CheckNodeHasSecondaryIP(self, node.name, self.op.secondary_ip, True)
4547 if master.name != node.name:
4548 # check reachability from master secondary ip to new secondary ip
4549 if not netutils.TcpPing(self.op.secondary_ip,
4550 constants.DEFAULT_NODED_PORT,
4551 source=master.secondary_ip):
4552 raise errors.OpPrereqError("Node secondary ip not reachable by TCP"
4553 " based ping to node daemon port",
4554 errors.ECODE_ENVIRON)
4556 if self.op.ndparams:
4557 new_ndparams = _GetUpdatedParams(self.node.ndparams, self.op.ndparams)
4558 utils.ForceDictType(new_ndparams, constants.NDS_PARAMETER_TYPES)
4559 self.new_ndparams = new_ndparams
4561 def Exec(self, feedback_fn):
4566 old_role = self.old_role
4567 new_role = self.new_role
4571 if self.op.ndparams:
4572 node.ndparams = self.new_ndparams
4574 if self.op.powered is not None:
4575 node.powered = self.op.powered
4577 for attr in ["master_capable", "vm_capable"]:
4578 val = getattr(self.op, attr)
4580 setattr(node, attr, val)
4581 result.append((attr, str(val)))
4583 if new_role != old_role:
4584 # Tell the node to demote itself, if no longer MC and not offline
4585 if old_role == self._ROLE_CANDIDATE and new_role != self._ROLE_OFFLINE:
4586 msg = self.rpc.call_node_demote_from_mc(node.name).fail_msg
4588 self.LogWarning("Node failed to demote itself: %s", msg)
4590 new_flags = self._R2F[new_role]
4591 for of, nf, desc in zip(self.old_flags, new_flags, self._FLAGS):
4593 result.append((desc, str(nf)))
4594 (node.master_candidate, node.drained, node.offline) = new_flags
4596 # we locked all nodes, we adjust the CP before updating this node
4598 _AdjustCandidatePool(self, [node.name])
4600 if self.op.secondary_ip:
4601 node.secondary_ip = self.op.secondary_ip
4602 result.append(("secondary_ip", self.op.secondary_ip))
4604 # this will trigger configuration file update, if needed
4605 self.cfg.Update(node, feedback_fn)
4607 # this will trigger job queue propagation or cleanup if the mc
4609 if [old_role, new_role].count(self._ROLE_CANDIDATE) == 1:
4610 self.context.ReaddNode(node)
4615 class LUNodePowercycle(NoHooksLU):
4616 """Powercycles a node.
4621 def CheckArguments(self):
4622 self.op.node_name = _ExpandNodeName(self.cfg, self.op.node_name)
4623 if self.op.node_name == self.cfg.GetMasterNode() and not self.op.force:
4624 raise errors.OpPrereqError("The node is the master and the force"
4625 " parameter was not set",
4628 def ExpandNames(self):
4629 """Locking for PowercycleNode.
4631 This is a last-resort option and shouldn't block on other
4632 jobs. Therefore, we grab no locks.
4635 self.needed_locks = {}
4637 def Exec(self, feedback_fn):
4641 result = self.rpc.call_node_powercycle(self.op.node_name,
4642 self.cfg.GetHypervisorType())
4643 result.Raise("Failed to schedule the reboot")
4644 return result.payload
4647 class LUClusterQuery(NoHooksLU):
4648 """Query cluster configuration.
4653 def ExpandNames(self):
4654 self.needed_locks = {}
4656 def Exec(self, feedback_fn):
4657 """Return cluster config.
4660 cluster = self.cfg.GetClusterInfo()
4663 # Filter just for enabled hypervisors
4664 for os_name, hv_dict in cluster.os_hvp.items():
4665 os_hvp[os_name] = {}
4666 for hv_name, hv_params in hv_dict.items():
4667 if hv_name in cluster.enabled_hypervisors:
4668 os_hvp[os_name][hv_name] = hv_params
4670 # Convert ip_family to ip_version
4671 primary_ip_version = constants.IP4_VERSION
4672 if cluster.primary_ip_family == netutils.IP6Address.family:
4673 primary_ip_version = constants.IP6_VERSION
4676 "software_version": constants.RELEASE_VERSION,
4677 "protocol_version": constants.PROTOCOL_VERSION,
4678 "config_version": constants.CONFIG_VERSION,
4679 "os_api_version": max(constants.OS_API_VERSIONS),
4680 "export_version": constants.EXPORT_VERSION,
4681 "architecture": (platform.architecture()[0], platform.machine()),
4682 "name": cluster.cluster_name,
4683 "master": cluster.master_node,
4684 "default_hypervisor": cluster.enabled_hypervisors[0],
4685 "enabled_hypervisors": cluster.enabled_hypervisors,
4686 "hvparams": dict([(hypervisor_name, cluster.hvparams[hypervisor_name])
4687 for hypervisor_name in cluster.enabled_hypervisors]),
4689 "beparams": cluster.beparams,
4690 "osparams": cluster.osparams,
4691 "nicparams": cluster.nicparams,
4692 "ndparams": cluster.ndparams,
4693 "candidate_pool_size": cluster.candidate_pool_size,
4694 "master_netdev": cluster.master_netdev,
4695 "volume_group_name": cluster.volume_group_name,
4696 "drbd_usermode_helper": cluster.drbd_usermode_helper,
4697 "file_storage_dir": cluster.file_storage_dir,
4698 "maintain_node_health": cluster.maintain_node_health,
4699 "ctime": cluster.ctime,
4700 "mtime": cluster.mtime,
4701 "uuid": cluster.uuid,
4702 "tags": list(cluster.GetTags()),
4703 "uid_pool": cluster.uid_pool,
4704 "default_iallocator": cluster.default_iallocator,
4705 "reserved_lvs": cluster.reserved_lvs,
4706 "primary_ip_version": primary_ip_version,
4707 "prealloc_wipe_disks": cluster.prealloc_wipe_disks,
4708 "hidden_os": cluster.hidden_os,
4709 "blacklisted_os": cluster.blacklisted_os,
4715 class LUClusterConfigQuery(NoHooksLU):
4716 """Return configuration values.
4720 _FIELDS_DYNAMIC = utils.FieldSet()
4721 _FIELDS_STATIC = utils.FieldSet("cluster_name", "master_node", "drain_flag",
4722 "watcher_pause", "volume_group_name")
4724 def CheckArguments(self):
4725 _CheckOutputFields(static=self._FIELDS_STATIC,
4726 dynamic=self._FIELDS_DYNAMIC,
4727 selected=self.op.output_fields)
4729 def ExpandNames(self):
4730 self.needed_locks = {}
4732 def Exec(self, feedback_fn):
4733 """Dump a representation of the cluster config to the standard output.
4737 for field in self.op.output_fields:
4738 if field == "cluster_name":
4739 entry = self.cfg.GetClusterName()
4740 elif field == "master_node":
4741 entry = self.cfg.GetMasterNode()
4742 elif field == "drain_flag":
4743 entry = os.path.exists(constants.JOB_QUEUE_DRAIN_FILE)
4744 elif field == "watcher_pause":
4745 entry = utils.ReadWatcherPauseFile(constants.WATCHER_PAUSEFILE)
4746 elif field == "volume_group_name":
4747 entry = self.cfg.GetVGName()
4749 raise errors.ParameterError(field)
4750 values.append(entry)
4754 class LUInstanceActivateDisks(NoHooksLU):
4755 """Bring up an instance's disks.
4760 def ExpandNames(self):
4761 self._ExpandAndLockInstance()
4762 self.needed_locks[locking.LEVEL_NODE] = []
4763 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
4765 def DeclareLocks(self, level):
4766 if level == locking.LEVEL_NODE:
4767 self._LockInstancesNodes()
4769 def CheckPrereq(self):
4770 """Check prerequisites.
4772 This checks that the instance is in the cluster.
4775 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
4776 assert self.instance is not None, \
4777 "Cannot retrieve locked instance %s" % self.op.instance_name
4778 _CheckNodeOnline(self, self.instance.primary_node)
4780 def Exec(self, feedback_fn):
4781 """Activate the disks.
4784 disks_ok, disks_info = \
4785 _AssembleInstanceDisks(self, self.instance,
4786 ignore_size=self.op.ignore_size)
4788 raise errors.OpExecError("Cannot activate block devices")
4793 def _AssembleInstanceDisks(lu, instance, disks=None, ignore_secondaries=False,
4795 """Prepare the block devices for an instance.
4797 This sets up the block devices on all nodes.
4799 @type lu: L{LogicalUnit}
4800 @param lu: the logical unit on whose behalf we execute
4801 @type instance: L{objects.Instance}
4802 @param instance: the instance for whose disks we assemble
4803 @type disks: list of L{objects.Disk} or None
4804 @param disks: which disks to assemble (or all, if None)
4805 @type ignore_secondaries: boolean
4806 @param ignore_secondaries: if true, errors on secondary nodes
4807 won't result in an error return from the function
4808 @type ignore_size: boolean
4809 @param ignore_size: if true, the current known size of the disk
4810 will not be used during the disk activation, useful for cases
4811 when the size is wrong
4812 @return: False if the operation failed, otherwise a list of
4813 (host, instance_visible_name, node_visible_name)
4814 with the mapping from node devices to instance devices
4819 iname = instance.name
4820 disks = _ExpandCheckDisks(instance, disks)
4822 # With the two passes mechanism we try to reduce the window of
4823 # opportunity for the race condition of switching DRBD to primary
4824 # before handshaking occured, but we do not eliminate it
4826 # The proper fix would be to wait (with some limits) until the
4827 # connection has been made and drbd transitions from WFConnection
4828 # into any other network-connected state (Connected, SyncTarget,
4831 # 1st pass, assemble on all nodes in secondary mode
4832 for idx, inst_disk in enumerate(disks):
4833 for node, node_disk in inst_disk.ComputeNodeTree(instance.primary_node):
4835 node_disk = node_disk.Copy()
4836 node_disk.UnsetSize()
4837 lu.cfg.SetDiskID(node_disk, node)
4838 result = lu.rpc.call_blockdev_assemble(node, node_disk, iname, False, idx)
4839 msg = result.fail_msg
4841 lu.proc.LogWarning("Could not prepare block device %s on node %s"
4842 " (is_primary=False, pass=1): %s",
4843 inst_disk.iv_name, node, msg)
4844 if not ignore_secondaries:
4847 # FIXME: race condition on drbd migration to primary
4849 # 2nd pass, do only the primary node
4850 for idx, inst_disk in enumerate(disks):
4853 for node, node_disk in inst_disk.ComputeNodeTree(instance.primary_node):
4854 if node != instance.primary_node:
4857 node_disk = node_disk.Copy()
4858 node_disk.UnsetSize()
4859 lu.cfg.SetDiskID(node_disk, node)
4860 result = lu.rpc.call_blockdev_assemble(node, node_disk, iname, True, idx)
4861 msg = result.fail_msg
4863 lu.proc.LogWarning("Could not prepare block device %s on node %s"
4864 " (is_primary=True, pass=2): %s",
4865 inst_disk.iv_name, node, msg)
4868 dev_path = result.payload
4870 device_info.append((instance.primary_node, inst_disk.iv_name, dev_path))
4872 # leave the disks configured for the primary node
4873 # this is a workaround that would be fixed better by
4874 # improving the logical/physical id handling
4876 lu.cfg.SetDiskID(disk, instance.primary_node)
4878 return disks_ok, device_info
4881 def _StartInstanceDisks(lu, instance, force):
4882 """Start the disks of an instance.
4885 disks_ok, _ = _AssembleInstanceDisks(lu, instance,
4886 ignore_secondaries=force)
4888 _ShutdownInstanceDisks(lu, instance)
4889 if force is not None and not force:
4890 lu.proc.LogWarning("", hint="If the message above refers to a"
4892 " you can retry the operation using '--force'.")
4893 raise errors.OpExecError("Disk consistency error")
4896 class LUInstanceDeactivateDisks(NoHooksLU):
4897 """Shutdown an instance's disks.
4902 def ExpandNames(self):
4903 self._ExpandAndLockInstance()
4904 self.needed_locks[locking.LEVEL_NODE] = []
4905 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
4907 def DeclareLocks(self, level):
4908 if level == locking.LEVEL_NODE:
4909 self._LockInstancesNodes()
4911 def CheckPrereq(self):
4912 """Check prerequisites.
4914 This checks that the instance is in the cluster.
4917 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
4918 assert self.instance is not None, \
4919 "Cannot retrieve locked instance %s" % self.op.instance_name
4921 def Exec(self, feedback_fn):
4922 """Deactivate the disks
4925 instance = self.instance
4927 _ShutdownInstanceDisks(self, instance)
4929 _SafeShutdownInstanceDisks(self, instance)
4932 def _SafeShutdownInstanceDisks(lu, instance, disks=None):
4933 """Shutdown block devices of an instance.
4935 This function checks if an instance is running, before calling
4936 _ShutdownInstanceDisks.
4939 _CheckInstanceDown(lu, instance, "cannot shutdown disks")
4940 _ShutdownInstanceDisks(lu, instance, disks=disks)
4943 def _ExpandCheckDisks(instance, disks):
4944 """Return the instance disks selected by the disks list
4946 @type disks: list of L{objects.Disk} or None
4947 @param disks: selected disks
4948 @rtype: list of L{objects.Disk}
4949 @return: selected instance disks to act on
4953 return instance.disks
4955 if not set(disks).issubset(instance.disks):
4956 raise errors.ProgrammerError("Can only act on disks belonging to the"
4961 def _ShutdownInstanceDisks(lu, instance, disks=None, ignore_primary=False):
4962 """Shutdown block devices of an instance.
4964 This does the shutdown on all nodes of the instance.
4966 If the ignore_primary is false, errors on the primary node are
4971 disks = _ExpandCheckDisks(instance, disks)
4974 for node, top_disk in disk.ComputeNodeTree(instance.primary_node):
4975 lu.cfg.SetDiskID(top_disk, node)
4976 result = lu.rpc.call_blockdev_shutdown(node, top_disk)
4977 msg = result.fail_msg
4979 lu.LogWarning("Could not shutdown block device %s on node %s: %s",
4980 disk.iv_name, node, msg)
4981 if ((node == instance.primary_node and not ignore_primary) or
4982 (node != instance.primary_node and not result.offline)):
4987 def _CheckNodeFreeMemory(lu, node, reason, requested, hypervisor_name):
4988 """Checks if a node has enough free memory.
4990 This function check if a given node has the needed amount of free
4991 memory. In case the node has less memory or we cannot get the
4992 information from the node, this function raise an OpPrereqError
4995 @type lu: C{LogicalUnit}
4996 @param lu: a logical unit from which we get configuration data
4998 @param node: the node to check
4999 @type reason: C{str}
5000 @param reason: string to use in the error message
5001 @type requested: C{int}
5002 @param requested: the amount of memory in MiB to check for
5003 @type hypervisor_name: C{str}
5004 @param hypervisor_name: the hypervisor to ask for memory stats
5005 @raise errors.OpPrereqError: if the node doesn't have enough memory, or
5006 we cannot check the node
5009 nodeinfo = lu.rpc.call_node_info([node], None, hypervisor_name)
5010 nodeinfo[node].Raise("Can't get data from node %s" % node,
5011 prereq=True, ecode=errors.ECODE_ENVIRON)
5012 free_mem = nodeinfo[node].payload.get('memory_free', None)
5013 if not isinstance(free_mem, int):
5014 raise errors.OpPrereqError("Can't compute free memory on node %s, result"
5015 " was '%s'" % (node, free_mem),
5016 errors.ECODE_ENVIRON)
5017 if requested > free_mem:
5018 raise errors.OpPrereqError("Not enough memory on node %s for %s:"
5019 " needed %s MiB, available %s MiB" %
5020 (node, reason, requested, free_mem),
5024 def _CheckNodesFreeDiskPerVG(lu, nodenames, req_sizes):
5025 """Checks if nodes have enough free disk space in the all VGs.
5027 This function check if all given nodes have the needed amount of
5028 free disk. In case any node has less disk or we cannot get the
5029 information from the node, this function raise an OpPrereqError
5032 @type lu: C{LogicalUnit}
5033 @param lu: a logical unit from which we get configuration data
5034 @type nodenames: C{list}
5035 @param nodenames: the list of node names to check
5036 @type req_sizes: C{dict}
5037 @param req_sizes: the hash of vg and corresponding amount of disk in
5039 @raise errors.OpPrereqError: if the node doesn't have enough disk,
5040 or we cannot check the node
5043 for vg, req_size in req_sizes.items():
5044 _CheckNodesFreeDiskOnVG(lu, nodenames, vg, req_size)
5047 def _CheckNodesFreeDiskOnVG(lu, nodenames, vg, requested):
5048 """Checks if nodes have enough free disk space in the specified VG.
5050 This function check if all given nodes have the needed amount of
5051 free disk. In case any node has less disk or we cannot get the
5052 information from the node, this function raise an OpPrereqError
5055 @type lu: C{LogicalUnit}
5056 @param lu: a logical unit from which we get configuration data
5057 @type nodenames: C{list}
5058 @param nodenames: the list of node names to check
5060 @param vg: the volume group to check
5061 @type requested: C{int}
5062 @param requested: the amount of disk in MiB to check for
5063 @raise errors.OpPrereqError: if the node doesn't have enough disk,
5064 or we cannot check the node
5067 nodeinfo = lu.rpc.call_node_info(nodenames, vg, None)
5068 for node in nodenames:
5069 info = nodeinfo[node]
5070 info.Raise("Cannot get current information from node %s" % node,
5071 prereq=True, ecode=errors.ECODE_ENVIRON)
5072 vg_free = info.payload.get("vg_free", None)
5073 if not isinstance(vg_free, int):
5074 raise errors.OpPrereqError("Can't compute free disk space on node"
5075 " %s for vg %s, result was '%s'" %
5076 (node, vg, vg_free), errors.ECODE_ENVIRON)
5077 if requested > vg_free:
5078 raise errors.OpPrereqError("Not enough disk space on target node %s"
5079 " vg %s: required %d MiB, available %d MiB" %
5080 (node, vg, requested, vg_free),
5084 class LUInstanceStartup(LogicalUnit):
5085 """Starts an instance.
5088 HPATH = "instance-start"
5089 HTYPE = constants.HTYPE_INSTANCE
5092 def CheckArguments(self):
5094 if self.op.beparams:
5095 # fill the beparams dict
5096 utils.ForceDictType(self.op.beparams, constants.BES_PARAMETER_TYPES)
5098 def ExpandNames(self):
5099 self._ExpandAndLockInstance()
5101 def BuildHooksEnv(self):
5104 This runs on master, primary and secondary nodes of the instance.
5108 "FORCE": self.op.force,
5110 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
5111 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
5114 def CheckPrereq(self):
5115 """Check prerequisites.
5117 This checks that the instance is in the cluster.
5120 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5121 assert self.instance is not None, \
5122 "Cannot retrieve locked instance %s" % self.op.instance_name
5125 if self.op.hvparams:
5126 # check hypervisor parameter syntax (locally)
5127 cluster = self.cfg.GetClusterInfo()
5128 utils.ForceDictType(self.op.hvparams, constants.HVS_PARAMETER_TYPES)
5129 filled_hvp = cluster.FillHV(instance)
5130 filled_hvp.update(self.op.hvparams)
5131 hv_type = hypervisor.GetHypervisor(instance.hypervisor)
5132 hv_type.CheckParameterSyntax(filled_hvp)
5133 _CheckHVParams(self, instance.all_nodes, instance.hypervisor, filled_hvp)
5135 self.primary_offline = self.cfg.GetNodeInfo(instance.primary_node).offline
5137 if self.primary_offline and self.op.ignore_offline_nodes:
5138 self.proc.LogWarning("Ignoring offline primary node")
5140 if self.op.hvparams or self.op.beparams:
5141 self.proc.LogWarning("Overridden parameters are ignored")
5143 _CheckNodeOnline(self, instance.primary_node)
5145 bep = self.cfg.GetClusterInfo().FillBE(instance)
5147 # check bridges existence
5148 _CheckInstanceBridgesExist(self, instance)
5150 remote_info = self.rpc.call_instance_info(instance.primary_node,
5152 instance.hypervisor)
5153 remote_info.Raise("Error checking node %s" % instance.primary_node,
5154 prereq=True, ecode=errors.ECODE_ENVIRON)
5155 if not remote_info.payload: # not running already
5156 _CheckNodeFreeMemory(self, instance.primary_node,
5157 "starting instance %s" % instance.name,
5158 bep[constants.BE_MEMORY], instance.hypervisor)
5160 def Exec(self, feedback_fn):
5161 """Start the instance.
5164 instance = self.instance
5165 force = self.op.force
5167 self.cfg.MarkInstanceUp(instance.name)
5169 if self.primary_offline:
5170 assert self.op.ignore_offline_nodes
5171 self.proc.LogInfo("Primary node offline, marked instance as started")
5173 node_current = instance.primary_node
5175 _StartInstanceDisks(self, instance, force)
5177 result = self.rpc.call_instance_start(node_current, instance,
5178 self.op.hvparams, self.op.beparams)
5179 msg = result.fail_msg
5181 _ShutdownInstanceDisks(self, instance)
5182 raise errors.OpExecError("Could not start instance: %s" % msg)
5185 class LUInstanceReboot(LogicalUnit):
5186 """Reboot an instance.
5189 HPATH = "instance-reboot"
5190 HTYPE = constants.HTYPE_INSTANCE
5193 def ExpandNames(self):
5194 self._ExpandAndLockInstance()
5196 def BuildHooksEnv(self):
5199 This runs on master, primary and secondary nodes of the instance.
5203 "IGNORE_SECONDARIES": self.op.ignore_secondaries,
5204 "REBOOT_TYPE": self.op.reboot_type,
5205 "SHUTDOWN_TIMEOUT": self.op.shutdown_timeout,
5207 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
5208 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
5211 def CheckPrereq(self):
5212 """Check prerequisites.
5214 This checks that the instance is in the cluster.
5217 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5218 assert self.instance is not None, \
5219 "Cannot retrieve locked instance %s" % self.op.instance_name
5221 _CheckNodeOnline(self, instance.primary_node)
5223 # check bridges existence
5224 _CheckInstanceBridgesExist(self, instance)
5226 def Exec(self, feedback_fn):
5227 """Reboot the instance.
5230 instance = self.instance
5231 ignore_secondaries = self.op.ignore_secondaries
5232 reboot_type = self.op.reboot_type
5234 remote_info = self.rpc.call_instance_info(instance.primary_node,
5236 instance.hypervisor)
5237 remote_info.Raise("Error checking node %s" % instance.primary_node)
5238 instance_running = bool(remote_info.payload)
5240 node_current = instance.primary_node
5242 if instance_running and reboot_type in [constants.INSTANCE_REBOOT_SOFT,
5243 constants.INSTANCE_REBOOT_HARD]:
5244 for disk in instance.disks:
5245 self.cfg.SetDiskID(disk, node_current)
5246 result = self.rpc.call_instance_reboot(node_current, instance,
5248 self.op.shutdown_timeout)
5249 result.Raise("Could not reboot instance")
5251 if instance_running:
5252 result = self.rpc.call_instance_shutdown(node_current, instance,
5253 self.op.shutdown_timeout)
5254 result.Raise("Could not shutdown instance for full reboot")
5255 _ShutdownInstanceDisks(self, instance)
5257 self.LogInfo("Instance %s was already stopped, starting now",
5259 _StartInstanceDisks(self, instance, ignore_secondaries)
5260 result = self.rpc.call_instance_start(node_current, instance, None, None)
5261 msg = result.fail_msg
5263 _ShutdownInstanceDisks(self, instance)
5264 raise errors.OpExecError("Could not start instance for"
5265 " full reboot: %s" % msg)
5267 self.cfg.MarkInstanceUp(instance.name)
5270 class LUInstanceShutdown(LogicalUnit):
5271 """Shutdown an instance.
5274 HPATH = "instance-stop"
5275 HTYPE = constants.HTYPE_INSTANCE
5278 def ExpandNames(self):
5279 self._ExpandAndLockInstance()
5281 def BuildHooksEnv(self):
5284 This runs on master, primary and secondary nodes of the instance.
5287 env = _BuildInstanceHookEnvByObject(self, self.instance)
5288 env["TIMEOUT"] = self.op.timeout
5289 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
5292 def CheckPrereq(self):
5293 """Check prerequisites.
5295 This checks that the instance is in the cluster.
5298 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5299 assert self.instance is not None, \
5300 "Cannot retrieve locked instance %s" % self.op.instance_name
5302 self.primary_offline = \
5303 self.cfg.GetNodeInfo(self.instance.primary_node).offline
5305 if self.primary_offline and self.op.ignore_offline_nodes:
5306 self.proc.LogWarning("Ignoring offline primary node")
5308 _CheckNodeOnline(self, self.instance.primary_node)
5310 def Exec(self, feedback_fn):
5311 """Shutdown the instance.
5314 instance = self.instance
5315 node_current = instance.primary_node
5316 timeout = self.op.timeout
5318 self.cfg.MarkInstanceDown(instance.name)
5320 if self.primary_offline:
5321 assert self.op.ignore_offline_nodes
5322 self.proc.LogInfo("Primary node offline, marked instance as stopped")
5324 result = self.rpc.call_instance_shutdown(node_current, instance, timeout)
5325 msg = result.fail_msg
5327 self.proc.LogWarning("Could not shutdown instance: %s" % msg)
5329 _ShutdownInstanceDisks(self, instance)
5332 class LUInstanceReinstall(LogicalUnit):
5333 """Reinstall an instance.
5336 HPATH = "instance-reinstall"
5337 HTYPE = constants.HTYPE_INSTANCE
5340 def ExpandNames(self):
5341 self._ExpandAndLockInstance()
5343 def BuildHooksEnv(self):
5346 This runs on master, primary and secondary nodes of the instance.
5349 env = _BuildInstanceHookEnvByObject(self, self.instance)
5350 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
5353 def CheckPrereq(self):
5354 """Check prerequisites.
5356 This checks that the instance is in the cluster and is not running.
5359 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5360 assert instance is not None, \
5361 "Cannot retrieve locked instance %s" % self.op.instance_name
5362 _CheckNodeOnline(self, instance.primary_node, "Instance primary node"
5363 " offline, cannot reinstall")
5364 for node in instance.secondary_nodes:
5365 _CheckNodeOnline(self, node, "Instance secondary node offline,"
5366 " cannot reinstall")
5368 if instance.disk_template == constants.DT_DISKLESS:
5369 raise errors.OpPrereqError("Instance '%s' has no disks" %
5370 self.op.instance_name,
5372 _CheckInstanceDown(self, instance, "cannot reinstall")
5374 if self.op.os_type is not None:
5376 pnode = _ExpandNodeName(self.cfg, instance.primary_node)
5377 _CheckNodeHasOS(self, pnode, self.op.os_type, self.op.force_variant)
5378 instance_os = self.op.os_type
5380 instance_os = instance.os
5382 nodelist = list(instance.all_nodes)
5384 if self.op.osparams:
5385 i_osdict = _GetUpdatedParams(instance.osparams, self.op.osparams)
5386 _CheckOSParams(self, True, nodelist, instance_os, i_osdict)
5387 self.os_inst = i_osdict # the new dict (without defaults)
5391 self.instance = instance
5393 def Exec(self, feedback_fn):
5394 """Reinstall the instance.
5397 inst = self.instance
5399 if self.op.os_type is not None:
5400 feedback_fn("Changing OS to '%s'..." % self.op.os_type)
5401 inst.os = self.op.os_type
5402 # Write to configuration
5403 self.cfg.Update(inst, feedback_fn)
5405 _StartInstanceDisks(self, inst, None)
5407 feedback_fn("Running the instance OS create scripts...")
5408 # FIXME: pass debug option from opcode to backend
5409 result = self.rpc.call_instance_os_add(inst.primary_node, inst, True,
5410 self.op.debug_level,
5411 osparams=self.os_inst)
5412 result.Raise("Could not install OS for instance %s on node %s" %
5413 (inst.name, inst.primary_node))
5415 _ShutdownInstanceDisks(self, inst)
5418 class LUInstanceRecreateDisks(LogicalUnit):
5419 """Recreate an instance's missing disks.
5422 HPATH = "instance-recreate-disks"
5423 HTYPE = constants.HTYPE_INSTANCE
5426 def ExpandNames(self):
5427 self._ExpandAndLockInstance()
5429 def BuildHooksEnv(self):
5432 This runs on master, primary and secondary nodes of the instance.
5435 env = _BuildInstanceHookEnvByObject(self, self.instance)
5436 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
5439 def CheckPrereq(self):
5440 """Check prerequisites.
5442 This checks that the instance is in the cluster and is not running.
5445 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5446 assert instance is not None, \
5447 "Cannot retrieve locked instance %s" % self.op.instance_name
5448 _CheckNodeOnline(self, instance.primary_node)
5450 if instance.disk_template == constants.DT_DISKLESS:
5451 raise errors.OpPrereqError("Instance '%s' has no disks" %
5452 self.op.instance_name, errors.ECODE_INVAL)
5453 _CheckInstanceDown(self, instance, "cannot recreate disks")
5455 if not self.op.disks:
5456 self.op.disks = range(len(instance.disks))
5458 for idx in self.op.disks:
5459 if idx >= len(instance.disks):
5460 raise errors.OpPrereqError("Invalid disk index passed '%s'" % idx,
5463 self.instance = instance
5465 def Exec(self, feedback_fn):
5466 """Recreate the disks.
5470 for idx, _ in enumerate(self.instance.disks):
5471 if idx not in self.op.disks: # disk idx has not been passed in
5475 _CreateDisks(self, self.instance, to_skip=to_skip)
5478 class LUInstanceRename(LogicalUnit):
5479 """Rename an instance.
5482 HPATH = "instance-rename"
5483 HTYPE = constants.HTYPE_INSTANCE
5485 def CheckArguments(self):
5489 if self.op.ip_check and not self.op.name_check:
5490 # TODO: make the ip check more flexible and not depend on the name check
5491 raise errors.OpPrereqError("Cannot do ip check without a name check",
5494 def BuildHooksEnv(self):
5497 This runs on master, primary and secondary nodes of the instance.
5500 env = _BuildInstanceHookEnvByObject(self, self.instance)
5501 env["INSTANCE_NEW_NAME"] = self.op.new_name
5502 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
5505 def CheckPrereq(self):
5506 """Check prerequisites.
5508 This checks that the instance is in the cluster and is not running.
5511 self.op.instance_name = _ExpandInstanceName(self.cfg,
5512 self.op.instance_name)
5513 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5514 assert instance is not None
5515 _CheckNodeOnline(self, instance.primary_node)
5516 _CheckInstanceDown(self, instance, "cannot rename")
5517 self.instance = instance
5519 new_name = self.op.new_name
5520 if self.op.name_check:
5521 hostname = netutils.GetHostname(name=new_name)
5522 self.LogInfo("Resolved given name '%s' to '%s'", new_name,
5524 new_name = self.op.new_name = hostname.name
5525 if (self.op.ip_check and
5526 netutils.TcpPing(hostname.ip, constants.DEFAULT_NODED_PORT)):
5527 raise errors.OpPrereqError("IP %s of instance %s already in use" %
5528 (hostname.ip, new_name),
5529 errors.ECODE_NOTUNIQUE)
5531 instance_list = self.cfg.GetInstanceList()
5532 if new_name in instance_list and new_name != instance.name:
5533 raise errors.OpPrereqError("Instance '%s' is already in the cluster" %
5534 new_name, errors.ECODE_EXISTS)
5536 def Exec(self, feedback_fn):
5537 """Rename the instance.
5540 inst = self.instance
5541 old_name = inst.name
5543 rename_file_storage = False
5544 if (inst.disk_template == constants.DT_FILE and
5545 self.op.new_name != inst.name):
5546 old_file_storage_dir = os.path.dirname(inst.disks[0].logical_id[1])
5547 rename_file_storage = True
5549 self.cfg.RenameInstance(inst.name, self.op.new_name)
5550 # Change the instance lock. This is definitely safe while we hold the BGL
5551 self.context.glm.remove(locking.LEVEL_INSTANCE, old_name)
5552 self.context.glm.add(locking.LEVEL_INSTANCE, self.op.new_name)
5554 # re-read the instance from the configuration after rename
5555 inst = self.cfg.GetInstanceInfo(self.op.new_name)
5557 if rename_file_storage:
5558 new_file_storage_dir = os.path.dirname(inst.disks[0].logical_id[1])
5559 result = self.rpc.call_file_storage_dir_rename(inst.primary_node,
5560 old_file_storage_dir,
5561 new_file_storage_dir)
5562 result.Raise("Could not rename on node %s directory '%s' to '%s'"
5563 " (but the instance has been renamed in Ganeti)" %
5564 (inst.primary_node, old_file_storage_dir,
5565 new_file_storage_dir))
5567 _StartInstanceDisks(self, inst, None)
5569 result = self.rpc.call_instance_run_rename(inst.primary_node, inst,
5570 old_name, self.op.debug_level)
5571 msg = result.fail_msg
5573 msg = ("Could not run OS rename script for instance %s on node %s"
5574 " (but the instance has been renamed in Ganeti): %s" %
5575 (inst.name, inst.primary_node, msg))
5576 self.proc.LogWarning(msg)
5578 _ShutdownInstanceDisks(self, inst)
5583 class LUInstanceRemove(LogicalUnit):
5584 """Remove an instance.
5587 HPATH = "instance-remove"
5588 HTYPE = constants.HTYPE_INSTANCE
5591 def ExpandNames(self):
5592 self._ExpandAndLockInstance()
5593 self.needed_locks[locking.LEVEL_NODE] = []
5594 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5596 def DeclareLocks(self, level):
5597 if level == locking.LEVEL_NODE:
5598 self._LockInstancesNodes()
5600 def BuildHooksEnv(self):
5603 This runs on master, primary and secondary nodes of the instance.
5606 env = _BuildInstanceHookEnvByObject(self, self.instance)
5607 env["SHUTDOWN_TIMEOUT"] = self.op.shutdown_timeout
5608 nl = [self.cfg.GetMasterNode()]
5609 nl_post = list(self.instance.all_nodes) + nl
5610 return env, nl, nl_post
5612 def CheckPrereq(self):
5613 """Check prerequisites.
5615 This checks that the instance is in the cluster.
5618 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5619 assert self.instance is not None, \
5620 "Cannot retrieve locked instance %s" % self.op.instance_name
5622 def Exec(self, feedback_fn):
5623 """Remove the instance.
5626 instance = self.instance
5627 logging.info("Shutting down instance %s on node %s",
5628 instance.name, instance.primary_node)
5630 result = self.rpc.call_instance_shutdown(instance.primary_node, instance,
5631 self.op.shutdown_timeout)
5632 msg = result.fail_msg
5634 if self.op.ignore_failures:
5635 feedback_fn("Warning: can't shutdown instance: %s" % msg)
5637 raise errors.OpExecError("Could not shutdown instance %s on"
5639 (instance.name, instance.primary_node, msg))
5641 _RemoveInstance(self, feedback_fn, instance, self.op.ignore_failures)
5644 def _RemoveInstance(lu, feedback_fn, instance, ignore_failures):
5645 """Utility function to remove an instance.
5648 logging.info("Removing block devices for instance %s", instance.name)
5650 if not _RemoveDisks(lu, instance):
5651 if not ignore_failures:
5652 raise errors.OpExecError("Can't remove instance's disks")
5653 feedback_fn("Warning: can't remove instance's disks")
5655 logging.info("Removing instance %s out of cluster config", instance.name)
5657 lu.cfg.RemoveInstance(instance.name)
5659 assert not lu.remove_locks.get(locking.LEVEL_INSTANCE), \
5660 "Instance lock removal conflict"
5662 # Remove lock for the instance
5663 lu.remove_locks[locking.LEVEL_INSTANCE] = instance.name
5666 class LUInstanceQuery(NoHooksLU):
5667 """Logical unit for querying instances.
5670 # pylint: disable-msg=W0142
5673 def CheckArguments(self):
5674 self.iq = _InstanceQuery(qlang.MakeSimpleFilter("name", self.op.names),
5675 self.op.output_fields, self.op.use_locking)
5677 def ExpandNames(self):
5678 self.iq.ExpandNames(self)
5680 def DeclareLocks(self, level):
5681 self.iq.DeclareLocks(self, level)
5683 def Exec(self, feedback_fn):
5684 return self.iq.OldStyleQuery(self)
5687 class LUInstanceFailover(LogicalUnit):
5688 """Failover an instance.
5691 HPATH = "instance-failover"
5692 HTYPE = constants.HTYPE_INSTANCE
5695 def ExpandNames(self):
5696 self._ExpandAndLockInstance()
5697 self.needed_locks[locking.LEVEL_NODE] = []
5698 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5700 def DeclareLocks(self, level):
5701 if level == locking.LEVEL_NODE:
5702 self._LockInstancesNodes()
5704 def BuildHooksEnv(self):
5707 This runs on master, primary and secondary nodes of the instance.
5710 instance = self.instance
5711 source_node = instance.primary_node
5712 target_node = instance.secondary_nodes[0]
5714 "IGNORE_CONSISTENCY": self.op.ignore_consistency,
5715 "SHUTDOWN_TIMEOUT": self.op.shutdown_timeout,
5716 "OLD_PRIMARY": source_node,
5717 "OLD_SECONDARY": target_node,
5718 "NEW_PRIMARY": target_node,
5719 "NEW_SECONDARY": source_node,
5721 env.update(_BuildInstanceHookEnvByObject(self, instance))
5722 nl = [self.cfg.GetMasterNode()] + list(instance.secondary_nodes)
5724 nl_post.append(source_node)
5725 return env, nl, nl_post
5727 def CheckPrereq(self):
5728 """Check prerequisites.
5730 This checks that the instance is in the cluster.
5733 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5734 assert self.instance is not None, \
5735 "Cannot retrieve locked instance %s" % self.op.instance_name
5737 bep = self.cfg.GetClusterInfo().FillBE(instance)
5738 if instance.disk_template not in constants.DTS_NET_MIRROR:
5739 raise errors.OpPrereqError("Instance's disk layout is not"
5740 " network mirrored, cannot failover.",
5743 secondary_nodes = instance.secondary_nodes
5744 if not secondary_nodes:
5745 raise errors.ProgrammerError("no secondary node but using "
5746 "a mirrored disk template")
5748 target_node = secondary_nodes[0]
5749 _CheckNodeOnline(self, target_node)
5750 _CheckNodeNotDrained(self, target_node)
5751 if instance.admin_up:
5752 # check memory requirements on the secondary node
5753 _CheckNodeFreeMemory(self, target_node, "failing over instance %s" %
5754 instance.name, bep[constants.BE_MEMORY],
5755 instance.hypervisor)
5757 self.LogInfo("Not checking memory on the secondary node as"
5758 " instance will not be started")
5760 # check bridge existance
5761 _CheckInstanceBridgesExist(self, instance, node=target_node)
5763 def Exec(self, feedback_fn):
5764 """Failover an instance.
5766 The failover is done by shutting it down on its present node and
5767 starting it on the secondary.
5770 instance = self.instance
5771 primary_node = self.cfg.GetNodeInfo(instance.primary_node)
5773 source_node = instance.primary_node
5774 target_node = instance.secondary_nodes[0]
5776 if instance.admin_up:
5777 feedback_fn("* checking disk consistency between source and target")
5778 for dev in instance.disks:
5779 # for drbd, these are drbd over lvm
5780 if not _CheckDiskConsistency(self, dev, target_node, False):
5781 if not self.op.ignore_consistency:
5782 raise errors.OpExecError("Disk %s is degraded on target node,"
5783 " aborting failover." % dev.iv_name)
5785 feedback_fn("* not checking disk consistency as instance is not running")
5787 feedback_fn("* shutting down instance on source node")
5788 logging.info("Shutting down instance %s on node %s",
5789 instance.name, source_node)
5791 result = self.rpc.call_instance_shutdown(source_node, instance,
5792 self.op.shutdown_timeout)
5793 msg = result.fail_msg
5795 if self.op.ignore_consistency or primary_node.offline:
5796 self.proc.LogWarning("Could not shutdown instance %s on node %s."
5797 " Proceeding anyway. Please make sure node"
5798 " %s is down. Error details: %s",
5799 instance.name, source_node, source_node, msg)
5801 raise errors.OpExecError("Could not shutdown instance %s on"
5803 (instance.name, source_node, msg))
5805 feedback_fn("* deactivating the instance's disks on source node")
5806 if not _ShutdownInstanceDisks(self, instance, ignore_primary=True):
5807 raise errors.OpExecError("Can't shut down the instance's disks.")
5809 instance.primary_node = target_node
5810 # distribute new instance config to the other nodes
5811 self.cfg.Update(instance, feedback_fn)
5813 # Only start the instance if it's marked as up
5814 if instance.admin_up:
5815 feedback_fn("* activating the instance's disks on target node")
5816 logging.info("Starting instance %s on node %s",
5817 instance.name, target_node)
5819 disks_ok, _ = _AssembleInstanceDisks(self, instance,
5820 ignore_secondaries=True)
5822 _ShutdownInstanceDisks(self, instance)
5823 raise errors.OpExecError("Can't activate the instance's disks")
5825 feedback_fn("* starting the instance on the target node")
5826 result = self.rpc.call_instance_start(target_node, instance, None, None)
5827 msg = result.fail_msg
5829 _ShutdownInstanceDisks(self, instance)
5830 raise errors.OpExecError("Could not start instance %s on node %s: %s" %
5831 (instance.name, target_node, msg))
5834 class LUInstanceMigrate(LogicalUnit):
5835 """Migrate an instance.
5837 This is migration without shutting down, compared to the failover,
5838 which is done with shutdown.
5841 HPATH = "instance-migrate"
5842 HTYPE = constants.HTYPE_INSTANCE
5845 def ExpandNames(self):
5846 self._ExpandAndLockInstance()
5848 self.needed_locks[locking.LEVEL_NODE] = []
5849 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5851 self._migrater = TLMigrateInstance(self, self.op.instance_name,
5853 self.tasklets = [self._migrater]
5855 def DeclareLocks(self, level):
5856 if level == locking.LEVEL_NODE:
5857 self._LockInstancesNodes()
5859 def BuildHooksEnv(self):
5862 This runs on master, primary and secondary nodes of the instance.
5865 instance = self._migrater.instance
5866 source_node = instance.primary_node
5867 target_node = instance.secondary_nodes[0]
5868 env = _BuildInstanceHookEnvByObject(self, instance)
5869 env["MIGRATE_LIVE"] = self._migrater.live
5870 env["MIGRATE_CLEANUP"] = self.op.cleanup
5872 "OLD_PRIMARY": source_node,
5873 "OLD_SECONDARY": target_node,
5874 "NEW_PRIMARY": target_node,
5875 "NEW_SECONDARY": source_node,
5877 nl = [self.cfg.GetMasterNode()] + list(instance.secondary_nodes)
5879 nl_post.append(source_node)
5880 return env, nl, nl_post
5883 class LUInstanceMove(LogicalUnit):
5884 """Move an instance by data-copying.
5887 HPATH = "instance-move"
5888 HTYPE = constants.HTYPE_INSTANCE
5891 def ExpandNames(self):
5892 self._ExpandAndLockInstance()
5893 target_node = _ExpandNodeName(self.cfg, self.op.target_node)
5894 self.op.target_node = target_node
5895 self.needed_locks[locking.LEVEL_NODE] = [target_node]
5896 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_APPEND
5898 def DeclareLocks(self, level):
5899 if level == locking.LEVEL_NODE:
5900 self._LockInstancesNodes(primary_only=True)
5902 def BuildHooksEnv(self):
5905 This runs on master, primary and secondary nodes of the instance.
5909 "TARGET_NODE": self.op.target_node,
5910 "SHUTDOWN_TIMEOUT": self.op.shutdown_timeout,
5912 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
5913 nl = [self.cfg.GetMasterNode()] + [self.instance.primary_node,
5914 self.op.target_node]
5917 def CheckPrereq(self):
5918 """Check prerequisites.
5920 This checks that the instance is in the cluster.
5923 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5924 assert self.instance is not None, \
5925 "Cannot retrieve locked instance %s" % self.op.instance_name
5927 node = self.cfg.GetNodeInfo(self.op.target_node)
5928 assert node is not None, \
5929 "Cannot retrieve locked node %s" % self.op.target_node
5931 self.target_node = target_node = node.name
5933 if target_node == instance.primary_node:
5934 raise errors.OpPrereqError("Instance %s is already on the node %s" %
5935 (instance.name, target_node),
5938 bep = self.cfg.GetClusterInfo().FillBE(instance)
5940 for idx, dsk in enumerate(instance.disks):
5941 if dsk.dev_type not in (constants.LD_LV, constants.LD_FILE):
5942 raise errors.OpPrereqError("Instance disk %d has a complex layout,"
5943 " cannot copy" % idx, errors.ECODE_STATE)
5945 _CheckNodeOnline(self, target_node)
5946 _CheckNodeNotDrained(self, target_node)
5947 _CheckNodeVmCapable(self, target_node)
5949 if instance.admin_up:
5950 # check memory requirements on the secondary node
5951 _CheckNodeFreeMemory(self, target_node, "failing over instance %s" %
5952 instance.name, bep[constants.BE_MEMORY],
5953 instance.hypervisor)
5955 self.LogInfo("Not checking memory on the secondary node as"
5956 " instance will not be started")
5958 # check bridge existance
5959 _CheckInstanceBridgesExist(self, instance, node=target_node)
5961 def Exec(self, feedback_fn):
5962 """Move an instance.
5964 The move is done by shutting it down on its present node, copying
5965 the data over (slow) and starting it on the new node.
5968 instance = self.instance
5970 source_node = instance.primary_node
5971 target_node = self.target_node
5973 self.LogInfo("Shutting down instance %s on source node %s",
5974 instance.name, source_node)
5976 result = self.rpc.call_instance_shutdown(source_node, instance,
5977 self.op.shutdown_timeout)
5978 msg = result.fail_msg
5980 if self.op.ignore_consistency:
5981 self.proc.LogWarning("Could not shutdown instance %s on node %s."
5982 " Proceeding anyway. Please make sure node"
5983 " %s is down. Error details: %s",
5984 instance.name, source_node, source_node, msg)
5986 raise errors.OpExecError("Could not shutdown instance %s on"
5988 (instance.name, source_node, msg))
5990 # create the target disks
5992 _CreateDisks(self, instance, target_node=target_node)
5993 except errors.OpExecError:
5994 self.LogWarning("Device creation failed, reverting...")
5996 _RemoveDisks(self, instance, target_node=target_node)
5998 self.cfg.ReleaseDRBDMinors(instance.name)
6001 cluster_name = self.cfg.GetClusterInfo().cluster_name
6004 # activate, get path, copy the data over
6005 for idx, disk in enumerate(instance.disks):
6006 self.LogInfo("Copying data for disk %d", idx)
6007 result = self.rpc.call_blockdev_assemble(target_node, disk,
6008 instance.name, True, idx)
6010 self.LogWarning("Can't assemble newly created disk %d: %s",
6011 idx, result.fail_msg)
6012 errs.append(result.fail_msg)
6014 dev_path = result.payload
6015 result = self.rpc.call_blockdev_export(source_node, disk,
6016 target_node, dev_path,
6019 self.LogWarning("Can't copy data over for disk %d: %s",
6020 idx, result.fail_msg)
6021 errs.append(result.fail_msg)
6025 self.LogWarning("Some disks failed to copy, aborting")
6027 _RemoveDisks(self, instance, target_node=target_node)
6029 self.cfg.ReleaseDRBDMinors(instance.name)
6030 raise errors.OpExecError("Errors during disk copy: %s" %
6033 instance.primary_node = target_node
6034 self.cfg.Update(instance, feedback_fn)
6036 self.LogInfo("Removing the disks on the original node")
6037 _RemoveDisks(self, instance, target_node=source_node)
6039 # Only start the instance if it's marked as up
6040 if instance.admin_up:
6041 self.LogInfo("Starting instance %s on node %s",
6042 instance.name, target_node)
6044 disks_ok, _ = _AssembleInstanceDisks(self, instance,
6045 ignore_secondaries=True)
6047 _ShutdownInstanceDisks(self, instance)
6048 raise errors.OpExecError("Can't activate the instance's disks")
6050 result = self.rpc.call_instance_start(target_node, instance, None, None)
6051 msg = result.fail_msg
6053 _ShutdownInstanceDisks(self, instance)
6054 raise errors.OpExecError("Could not start instance %s on node %s: %s" %
6055 (instance.name, target_node, msg))
6058 class LUNodeMigrate(LogicalUnit):
6059 """Migrate all instances from a node.
6062 HPATH = "node-migrate"
6063 HTYPE = constants.HTYPE_NODE
6066 def ExpandNames(self):
6067 self.op.node_name = _ExpandNodeName(self.cfg, self.op.node_name)
6069 self.needed_locks = {
6070 locking.LEVEL_NODE: [self.op.node_name],
6073 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_APPEND
6075 # Create tasklets for migrating instances for all instances on this node
6079 for inst in _GetNodePrimaryInstances(self.cfg, self.op.node_name):
6080 logging.debug("Migrating instance %s", inst.name)
6081 names.append(inst.name)
6083 tasklets.append(TLMigrateInstance(self, inst.name, False))
6085 self.tasklets = tasklets
6087 # Declare instance locks
6088 self.needed_locks[locking.LEVEL_INSTANCE] = names
6090 def DeclareLocks(self, level):
6091 if level == locking.LEVEL_NODE:
6092 self._LockInstancesNodes()
6094 def BuildHooksEnv(self):
6097 This runs on the master, the primary and all the secondaries.
6101 "NODE_NAME": self.op.node_name,
6104 nl = [self.cfg.GetMasterNode()]
6106 return (env, nl, nl)
6109 class TLMigrateInstance(Tasklet):
6110 """Tasklet class for instance migration.
6113 @ivar live: whether the migration will be done live or non-live;
6114 this variable is initalized only after CheckPrereq has run
6117 def __init__(self, lu, instance_name, cleanup):
6118 """Initializes this class.
6121 Tasklet.__init__(self, lu)
6124 self.instance_name = instance_name
6125 self.cleanup = cleanup
6126 self.live = False # will be overridden later
6128 def CheckPrereq(self):
6129 """Check prerequisites.
6131 This checks that the instance is in the cluster.
6134 instance_name = _ExpandInstanceName(self.lu.cfg, self.instance_name)
6135 instance = self.cfg.GetInstanceInfo(instance_name)
6136 assert instance is not None
6138 if instance.disk_template != constants.DT_DRBD8:
6139 raise errors.OpPrereqError("Instance's disk layout is not"
6140 " drbd8, cannot migrate.", errors.ECODE_STATE)
6142 secondary_nodes = instance.secondary_nodes
6143 if not secondary_nodes:
6144 raise errors.ConfigurationError("No secondary node but using"
6145 " drbd8 disk template")
6147 i_be = self.cfg.GetClusterInfo().FillBE(instance)
6149 target_node = secondary_nodes[0]
6150 # check memory requirements on the secondary node
6151 _CheckNodeFreeMemory(self.lu, target_node, "migrating instance %s" %
6152 instance.name, i_be[constants.BE_MEMORY],
6153 instance.hypervisor)
6155 # check bridge existance
6156 _CheckInstanceBridgesExist(self.lu, instance, node=target_node)
6158 if not self.cleanup:
6159 _CheckNodeNotDrained(self.lu, target_node)
6160 result = self.rpc.call_instance_migratable(instance.primary_node,
6162 result.Raise("Can't migrate, please use failover",
6163 prereq=True, ecode=errors.ECODE_STATE)
6165 self.instance = instance
6167 if self.lu.op.live is not None and self.lu.op.mode is not None:
6168 raise errors.OpPrereqError("Only one of the 'live' and 'mode'"
6169 " parameters are accepted",
6171 if self.lu.op.live is not None:
6173 self.lu.op.mode = constants.HT_MIGRATION_LIVE
6175 self.lu.op.mode = constants.HT_MIGRATION_NONLIVE
6176 # reset the 'live' parameter to None so that repeated
6177 # invocations of CheckPrereq do not raise an exception
6178 self.lu.op.live = None
6179 elif self.lu.op.mode is None:
6180 # read the default value from the hypervisor
6181 i_hv = self.cfg.GetClusterInfo().FillHV(instance, skip_globals=False)
6182 self.lu.op.mode = i_hv[constants.HV_MIGRATION_MODE]
6184 self.live = self.lu.op.mode == constants.HT_MIGRATION_LIVE
6186 def _WaitUntilSync(self):
6187 """Poll with custom rpc for disk sync.
6189 This uses our own step-based rpc call.
6192 self.feedback_fn("* wait until resync is done")
6196 result = self.rpc.call_drbd_wait_sync(self.all_nodes,
6198 self.instance.disks)
6200 for node, nres in result.items():
6201 nres.Raise("Cannot resync disks on node %s" % node)
6202 node_done, node_percent = nres.payload
6203 all_done = all_done and node_done
6204 if node_percent is not None:
6205 min_percent = min(min_percent, node_percent)
6207 if min_percent < 100:
6208 self.feedback_fn(" - progress: %.1f%%" % min_percent)
6211 def _EnsureSecondary(self, node):
6212 """Demote a node to secondary.
6215 self.feedback_fn("* switching node %s to secondary mode" % node)
6217 for dev in self.instance.disks:
6218 self.cfg.SetDiskID(dev, node)
6220 result = self.rpc.call_blockdev_close(node, self.instance.name,
6221 self.instance.disks)
6222 result.Raise("Cannot change disk to secondary on node %s" % node)
6224 def _GoStandalone(self):
6225 """Disconnect from the network.
6228 self.feedback_fn("* changing into standalone mode")
6229 result = self.rpc.call_drbd_disconnect_net(self.all_nodes, self.nodes_ip,
6230 self.instance.disks)
6231 for node, nres in result.items():
6232 nres.Raise("Cannot disconnect disks node %s" % node)
6234 def _GoReconnect(self, multimaster):
6235 """Reconnect to the network.
6241 msg = "single-master"
6242 self.feedback_fn("* changing disks into %s mode" % msg)
6243 result = self.rpc.call_drbd_attach_net(self.all_nodes, self.nodes_ip,
6244 self.instance.disks,
6245 self.instance.name, multimaster)
6246 for node, nres in result.items():
6247 nres.Raise("Cannot change disks config on node %s" % node)
6249 def _ExecCleanup(self):
6250 """Try to cleanup after a failed migration.
6252 The cleanup is done by:
6253 - check that the instance is running only on one node
6254 (and update the config if needed)
6255 - change disks on its secondary node to secondary
6256 - wait until disks are fully synchronized
6257 - disconnect from the network
6258 - change disks into single-master mode
6259 - wait again until disks are fully synchronized
6262 instance = self.instance
6263 target_node = self.target_node
6264 source_node = self.source_node
6266 # check running on only one node
6267 self.feedback_fn("* checking where the instance actually runs"
6268 " (if this hangs, the hypervisor might be in"
6270 ins_l = self.rpc.call_instance_list(self.all_nodes, [instance.hypervisor])
6271 for node, result in ins_l.items():
6272 result.Raise("Can't contact node %s" % node)
6274 runningon_source = instance.name in ins_l[source_node].payload
6275 runningon_target = instance.name in ins_l[target_node].payload
6277 if runningon_source and runningon_target:
6278 raise errors.OpExecError("Instance seems to be running on two nodes,"
6279 " or the hypervisor is confused. You will have"
6280 " to ensure manually that it runs only on one"
6281 " and restart this operation.")
6283 if not (runningon_source or runningon_target):
6284 raise errors.OpExecError("Instance does not seem to be running at all."
6285 " In this case, it's safer to repair by"
6286 " running 'gnt-instance stop' to ensure disk"
6287 " shutdown, and then restarting it.")
6289 if runningon_target:
6290 # the migration has actually succeeded, we need to update the config
6291 self.feedback_fn("* instance running on secondary node (%s),"
6292 " updating config" % target_node)
6293 instance.primary_node = target_node
6294 self.cfg.Update(instance, self.feedback_fn)
6295 demoted_node = source_node
6297 self.feedback_fn("* instance confirmed to be running on its"
6298 " primary node (%s)" % source_node)
6299 demoted_node = target_node
6301 self._EnsureSecondary(demoted_node)
6303 self._WaitUntilSync()
6304 except errors.OpExecError:
6305 # we ignore here errors, since if the device is standalone, it
6306 # won't be able to sync
6308 self._GoStandalone()
6309 self._GoReconnect(False)
6310 self._WaitUntilSync()
6312 self.feedback_fn("* done")
6314 def _RevertDiskStatus(self):
6315 """Try to revert the disk status after a failed migration.
6318 target_node = self.target_node
6320 self._EnsureSecondary(target_node)
6321 self._GoStandalone()
6322 self._GoReconnect(False)
6323 self._WaitUntilSync()
6324 except errors.OpExecError, err:
6325 self.lu.LogWarning("Migration failed and I can't reconnect the"
6326 " drives: error '%s'\n"
6327 "Please look and recover the instance status" %
6330 def _AbortMigration(self):
6331 """Call the hypervisor code to abort a started migration.
6334 instance = self.instance
6335 target_node = self.target_node
6336 migration_info = self.migration_info
6338 abort_result = self.rpc.call_finalize_migration(target_node,
6342 abort_msg = abort_result.fail_msg
6344 logging.error("Aborting migration failed on target node %s: %s",
6345 target_node, abort_msg)
6346 # Don't raise an exception here, as we stil have to try to revert the
6347 # disk status, even if this step failed.
6349 def _ExecMigration(self):
6350 """Migrate an instance.
6352 The migrate is done by:
6353 - change the disks into dual-master mode
6354 - wait until disks are fully synchronized again
6355 - migrate the instance
6356 - change disks on the new secondary node (the old primary) to secondary
6357 - wait until disks are fully synchronized
6358 - change disks into single-master mode
6361 instance = self.instance
6362 target_node = self.target_node
6363 source_node = self.source_node
6365 self.feedback_fn("* checking disk consistency between source and target")
6366 for dev in instance.disks:
6367 if not _CheckDiskConsistency(self.lu, dev, target_node, False):
6368 raise errors.OpExecError("Disk %s is degraded or not fully"
6369 " synchronized on target node,"
6370 " aborting migrate." % dev.iv_name)
6372 # First get the migration information from the remote node
6373 result = self.rpc.call_migration_info(source_node, instance)
6374 msg = result.fail_msg
6376 log_err = ("Failed fetching source migration information from %s: %s" %
6378 logging.error(log_err)
6379 raise errors.OpExecError(log_err)
6381 self.migration_info = migration_info = result.payload
6383 # Then switch the disks to master/master mode
6384 self._EnsureSecondary(target_node)
6385 self._GoStandalone()
6386 self._GoReconnect(True)
6387 self._WaitUntilSync()
6389 self.feedback_fn("* preparing %s to accept the instance" % target_node)
6390 result = self.rpc.call_accept_instance(target_node,
6393 self.nodes_ip[target_node])
6395 msg = result.fail_msg
6397 logging.error("Instance pre-migration failed, trying to revert"
6398 " disk status: %s", msg)
6399 self.feedback_fn("Pre-migration failed, aborting")
6400 self._AbortMigration()
6401 self._RevertDiskStatus()
6402 raise errors.OpExecError("Could not pre-migrate instance %s: %s" %
6403 (instance.name, msg))
6405 self.feedback_fn("* migrating instance to %s" % target_node)
6407 result = self.rpc.call_instance_migrate(source_node, instance,
6408 self.nodes_ip[target_node],
6410 msg = result.fail_msg
6412 logging.error("Instance migration failed, trying to revert"
6413 " disk status: %s", msg)
6414 self.feedback_fn("Migration failed, aborting")
6415 self._AbortMigration()
6416 self._RevertDiskStatus()
6417 raise errors.OpExecError("Could not migrate instance %s: %s" %
6418 (instance.name, msg))
6421 instance.primary_node = target_node
6422 # distribute new instance config to the other nodes
6423 self.cfg.Update(instance, self.feedback_fn)
6425 result = self.rpc.call_finalize_migration(target_node,
6429 msg = result.fail_msg
6431 logging.error("Instance migration succeeded, but finalization failed:"
6433 raise errors.OpExecError("Could not finalize instance migration: %s" %
6436 self._EnsureSecondary(source_node)
6437 self._WaitUntilSync()
6438 self._GoStandalone()
6439 self._GoReconnect(False)
6440 self._WaitUntilSync()
6442 self.feedback_fn("* done")
6444 def Exec(self, feedback_fn):
6445 """Perform the migration.
6448 feedback_fn("Migrating instance %s" % self.instance.name)
6450 self.feedback_fn = feedback_fn
6452 self.source_node = self.instance.primary_node
6453 self.target_node = self.instance.secondary_nodes[0]
6454 self.all_nodes = [self.source_node, self.target_node]
6456 self.source_node: self.cfg.GetNodeInfo(self.source_node).secondary_ip,
6457 self.target_node: self.cfg.GetNodeInfo(self.target_node).secondary_ip,
6461 return self._ExecCleanup()
6463 return self._ExecMigration()
6466 def _CreateBlockDev(lu, node, instance, device, force_create,
6468 """Create a tree of block devices on a given node.
6470 If this device type has to be created on secondaries, create it and
6473 If not, just recurse to children keeping the same 'force' value.
6475 @param lu: the lu on whose behalf we execute
6476 @param node: the node on which to create the device
6477 @type instance: L{objects.Instance}
6478 @param instance: the instance which owns the device
6479 @type device: L{objects.Disk}
6480 @param device: the device to create
6481 @type force_create: boolean
6482 @param force_create: whether to force creation of this device; this
6483 will be change to True whenever we find a device which has
6484 CreateOnSecondary() attribute
6485 @param info: the extra 'metadata' we should attach to the device
6486 (this will be represented as a LVM tag)
6487 @type force_open: boolean
6488 @param force_open: this parameter will be passes to the
6489 L{backend.BlockdevCreate} function where it specifies
6490 whether we run on primary or not, and it affects both
6491 the child assembly and the device own Open() execution
6494 if device.CreateOnSecondary():
6498 for child in device.children:
6499 _CreateBlockDev(lu, node, instance, child, force_create,
6502 if not force_create:
6505 _CreateSingleBlockDev(lu, node, instance, device, info, force_open)
6508 def _CreateSingleBlockDev(lu, node, instance, device, info, force_open):
6509 """Create a single block device on a given node.
6511 This will not recurse over children of the device, so they must be
6514 @param lu: the lu on whose behalf we execute
6515 @param node: the node on which to create the device
6516 @type instance: L{objects.Instance}
6517 @param instance: the instance which owns the device
6518 @type device: L{objects.Disk}
6519 @param device: the device to create
6520 @param info: the extra 'metadata' we should attach to the device
6521 (this will be represented as a LVM tag)
6522 @type force_open: boolean
6523 @param force_open: this parameter will be passes to the
6524 L{backend.BlockdevCreate} function where it specifies
6525 whether we run on primary or not, and it affects both
6526 the child assembly and the device own Open() execution
6529 lu.cfg.SetDiskID(device, node)
6530 result = lu.rpc.call_blockdev_create(node, device, device.size,
6531 instance.name, force_open, info)
6532 result.Raise("Can't create block device %s on"
6533 " node %s for instance %s" % (device, node, instance.name))
6534 if device.physical_id is None:
6535 device.physical_id = result.payload
6538 def _GenerateUniqueNames(lu, exts):
6539 """Generate a suitable LV name.
6541 This will generate a logical volume name for the given instance.
6546 new_id = lu.cfg.GenerateUniqueID(lu.proc.GetECId())
6547 results.append("%s%s" % (new_id, val))
6551 def _GenerateDRBD8Branch(lu, primary, secondary, size, vgname, names, iv_name,
6553 """Generate a drbd8 device complete with its children.
6556 port = lu.cfg.AllocatePort()
6557 shared_secret = lu.cfg.GenerateDRBDSecret(lu.proc.GetECId())
6558 dev_data = objects.Disk(dev_type=constants.LD_LV, size=size,
6559 logical_id=(vgname, names[0]))
6560 dev_meta = objects.Disk(dev_type=constants.LD_LV, size=128,
6561 logical_id=(vgname, names[1]))
6562 drbd_dev = objects.Disk(dev_type=constants.LD_DRBD8, size=size,
6563 logical_id=(primary, secondary, port,
6566 children=[dev_data, dev_meta],
6571 def _GenerateDiskTemplate(lu, template_name,
6572 instance_name, primary_node,
6573 secondary_nodes, disk_info,
6574 file_storage_dir, file_driver,
6575 base_index, feedback_fn):
6576 """Generate the entire disk layout for a given template type.
6579 #TODO: compute space requirements
6581 vgname = lu.cfg.GetVGName()
6582 disk_count = len(disk_info)
6584 if template_name == constants.DT_DISKLESS:
6586 elif template_name == constants.DT_PLAIN:
6587 if len(secondary_nodes) != 0:
6588 raise errors.ProgrammerError("Wrong template configuration")
6590 names = _GenerateUniqueNames(lu, [".disk%d" % (base_index + i)
6591 for i in range(disk_count)])
6592 for idx, disk in enumerate(disk_info):
6593 disk_index = idx + base_index
6594 vg = disk.get("vg", vgname)
6595 feedback_fn("* disk %i, vg %s, name %s" % (idx, vg, names[idx]))
6596 disk_dev = objects.Disk(dev_type=constants.LD_LV, size=disk["size"],
6597 logical_id=(vg, names[idx]),
6598 iv_name="disk/%d" % disk_index,
6600 disks.append(disk_dev)
6601 elif template_name == constants.DT_DRBD8:
6602 if len(secondary_nodes) != 1:
6603 raise errors.ProgrammerError("Wrong template configuration")
6604 remote_node = secondary_nodes[0]
6605 minors = lu.cfg.AllocateDRBDMinor(
6606 [primary_node, remote_node] * len(disk_info), instance_name)
6609 for lv_prefix in _GenerateUniqueNames(lu, [".disk%d" % (base_index + i)
6610 for i in range(disk_count)]):
6611 names.append(lv_prefix + "_data")
6612 names.append(lv_prefix + "_meta")
6613 for idx, disk in enumerate(disk_info):
6614 disk_index = idx + base_index
6615 vg = disk.get("vg", vgname)
6616 disk_dev = _GenerateDRBD8Branch(lu, primary_node, remote_node,
6617 disk["size"], vg, names[idx*2:idx*2+2],
6618 "disk/%d" % disk_index,
6619 minors[idx*2], minors[idx*2+1])
6620 disk_dev.mode = disk["mode"]
6621 disks.append(disk_dev)
6622 elif template_name == constants.DT_FILE:
6623 if len(secondary_nodes) != 0:
6624 raise errors.ProgrammerError("Wrong template configuration")
6626 opcodes.RequireFileStorage()
6628 for idx, disk in enumerate(disk_info):
6629 disk_index = idx + base_index
6630 disk_dev = objects.Disk(dev_type=constants.LD_FILE, size=disk["size"],
6631 iv_name="disk/%d" % disk_index,
6632 logical_id=(file_driver,
6633 "%s/disk%d" % (file_storage_dir,
6636 disks.append(disk_dev)
6638 raise errors.ProgrammerError("Invalid disk template '%s'" % template_name)
6642 def _GetInstanceInfoText(instance):
6643 """Compute that text that should be added to the disk's metadata.
6646 return "originstname+%s" % instance.name
6649 def _CalcEta(time_taken, written, total_size):
6650 """Calculates the ETA based on size written and total size.
6652 @param time_taken: The time taken so far
6653 @param written: amount written so far
6654 @param total_size: The total size of data to be written
6655 @return: The remaining time in seconds
6658 avg_time = time_taken / float(written)
6659 return (total_size - written) * avg_time
6662 def _WipeDisks(lu, instance):
6663 """Wipes instance disks.
6665 @type lu: L{LogicalUnit}
6666 @param lu: the logical unit on whose behalf we execute
6667 @type instance: L{objects.Instance}
6668 @param instance: the instance whose disks we should create
6669 @return: the success of the wipe
6672 node = instance.primary_node
6673 logging.info("Pause sync of instance %s disks", instance.name)
6674 result = lu.rpc.call_blockdev_pause_resume_sync(node, instance.disks, True)
6676 for idx, success in enumerate(result.payload):
6678 logging.warn("pause-sync of instance %s for disks %d failed",
6682 for idx, device in enumerate(instance.disks):
6683 lu.LogInfo("* Wiping disk %d", idx)
6684 logging.info("Wiping disk %d for instance %s", idx, instance.name)
6686 # The wipe size is MIN_WIPE_CHUNK_PERCENT % of the instance disk but
6687 # MAX_WIPE_CHUNK at max
6688 wipe_chunk_size = min(constants.MAX_WIPE_CHUNK, device.size / 100.0 *
6689 constants.MIN_WIPE_CHUNK_PERCENT)
6694 start_time = time.time()
6696 while offset < size:
6697 wipe_size = min(wipe_chunk_size, size - offset)
6698 result = lu.rpc.call_blockdev_wipe(node, device, offset, wipe_size)
6699 result.Raise("Could not wipe disk %d at offset %d for size %d" %
6700 (idx, offset, wipe_size))
6703 if now - last_output >= 60:
6704 eta = _CalcEta(now - start_time, offset, size)
6705 lu.LogInfo(" - done: %.1f%% ETA: %s" %
6706 (offset / float(size) * 100, utils.FormatSeconds(eta)))
6709 logging.info("Resume sync of instance %s disks", instance.name)
6711 result = lu.rpc.call_blockdev_pause_resume_sync(node, instance.disks, False)
6713 for idx, success in enumerate(result.payload):
6715 lu.LogWarning("Warning: Resume sync of disk %d failed. Please have a"
6716 " look at the status and troubleshoot the issue.", idx)
6717 logging.warn("resume-sync of instance %s for disks %d failed",
6721 def _CreateDisks(lu, instance, to_skip=None, target_node=None):
6722 """Create all disks for an instance.
6724 This abstracts away some work from AddInstance.
6726 @type lu: L{LogicalUnit}
6727 @param lu: the logical unit on whose behalf we execute
6728 @type instance: L{objects.Instance}
6729 @param instance: the instance whose disks we should create
6731 @param to_skip: list of indices to skip
6732 @type target_node: string
6733 @param target_node: if passed, overrides the target node for creation
6735 @return: the success of the creation
6738 info = _GetInstanceInfoText(instance)
6739 if target_node is None:
6740 pnode = instance.primary_node
6741 all_nodes = instance.all_nodes
6746 if instance.disk_template == constants.DT_FILE:
6747 file_storage_dir = os.path.dirname(instance.disks[0].logical_id[1])
6748 result = lu.rpc.call_file_storage_dir_create(pnode, file_storage_dir)
6750 result.Raise("Failed to create directory '%s' on"
6751 " node %s" % (file_storage_dir, pnode))
6753 # Note: this needs to be kept in sync with adding of disks in
6754 # LUInstanceSetParams
6755 for idx, device in enumerate(instance.disks):
6756 if to_skip and idx in to_skip:
6758 logging.info("Creating volume %s for instance %s",
6759 device.iv_name, instance.name)
6761 for node in all_nodes:
6762 f_create = node == pnode
6763 _CreateBlockDev(lu, node, instance, device, f_create, info, f_create)
6766 def _RemoveDisks(lu, instance, target_node=None):
6767 """Remove all disks for an instance.
6769 This abstracts away some work from `AddInstance()` and
6770 `RemoveInstance()`. Note that in case some of the devices couldn't
6771 be removed, the removal will continue with the other ones (compare
6772 with `_CreateDisks()`).
6774 @type lu: L{LogicalUnit}
6775 @param lu: the logical unit on whose behalf we execute
6776 @type instance: L{objects.Instance}
6777 @param instance: the instance whose disks we should remove
6778 @type target_node: string
6779 @param target_node: used to override the node on which to remove the disks
6781 @return: the success of the removal
6784 logging.info("Removing block devices for instance %s", instance.name)
6787 for device in instance.disks:
6789 edata = [(target_node, device)]
6791 edata = device.ComputeNodeTree(instance.primary_node)
6792 for node, disk in edata:
6793 lu.cfg.SetDiskID(disk, node)
6794 msg = lu.rpc.call_blockdev_remove(node, disk).fail_msg
6796 lu.LogWarning("Could not remove block device %s on node %s,"
6797 " continuing anyway: %s", device.iv_name, node, msg)
6800 if instance.disk_template == constants.DT_FILE:
6801 file_storage_dir = os.path.dirname(instance.disks[0].logical_id[1])
6805 tgt = instance.primary_node
6806 result = lu.rpc.call_file_storage_dir_remove(tgt, file_storage_dir)
6808 lu.LogWarning("Could not remove directory '%s' on node %s: %s",
6809 file_storage_dir, instance.primary_node, result.fail_msg)
6815 def _ComputeDiskSizePerVG(disk_template, disks):
6816 """Compute disk size requirements in the volume group
6819 def _compute(disks, payload):
6820 """Universal algorithm
6825 vgs[disk["vg"]] = vgs.get("vg", 0) + disk["size"] + payload
6829 # Required free disk space as a function of disk and swap space
6831 constants.DT_DISKLESS: {},
6832 constants.DT_PLAIN: _compute(disks, 0),
6833 # 128 MB are added for drbd metadata for each disk
6834 constants.DT_DRBD8: _compute(disks, 128),
6835 constants.DT_FILE: {},
6838 if disk_template not in req_size_dict:
6839 raise errors.ProgrammerError("Disk template '%s' size requirement"
6840 " is unknown" % disk_template)
6842 return req_size_dict[disk_template]
6845 def _ComputeDiskSize(disk_template, disks):
6846 """Compute disk size requirements in the volume group
6849 # Required free disk space as a function of disk and swap space
6851 constants.DT_DISKLESS: None,
6852 constants.DT_PLAIN: sum(d["size"] for d in disks),
6853 # 128 MB are added for drbd metadata for each disk
6854 constants.DT_DRBD8: sum(d["size"] + 128 for d in disks),
6855 constants.DT_FILE: None,
6858 if disk_template not in req_size_dict:
6859 raise errors.ProgrammerError("Disk template '%s' size requirement"
6860 " is unknown" % disk_template)
6862 return req_size_dict[disk_template]
6865 def _FilterVmNodes(lu, nodenames):
6866 """Filters out non-vm_capable nodes from a list.
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
6873 @return: the list of vm-capable nodes
6876 vm_nodes = frozenset(lu.cfg.GetNonVmCapableNodeList())
6877 return [name for name in nodenames if name not in vm_nodes]
6880 def _CheckHVParams(lu, nodenames, hvname, hvparams):
6881 """Hypervisor parameter validation.
6883 This function abstract the hypervisor parameter validation to be
6884 used in both instance create and instance modify.
6886 @type lu: L{LogicalUnit}
6887 @param lu: the logical unit for which we check
6888 @type nodenames: list
6889 @param nodenames: the list of nodes on which we should check
6890 @type hvname: string
6891 @param hvname: the name of the hypervisor we should use
6892 @type hvparams: dict
6893 @param hvparams: the parameters which we need to check
6894 @raise errors.OpPrereqError: if the parameters are not valid
6897 nodenames = _FilterVmNodes(lu, nodenames)
6898 hvinfo = lu.rpc.call_hypervisor_validate_params(nodenames,
6901 for node in nodenames:
6905 info.Raise("Hypervisor parameter validation failed on node %s" % node)
6908 def _CheckOSParams(lu, required, nodenames, osname, osparams):
6909 """OS parameters validation.
6911 @type lu: L{LogicalUnit}
6912 @param lu: the logical unit for which we check
6913 @type required: boolean
6914 @param required: whether the validation should fail if the OS is not
6916 @type nodenames: list
6917 @param nodenames: the list of nodes on which we should check
6918 @type osname: string
6919 @param osname: the name of the hypervisor we should use
6920 @type osparams: dict
6921 @param osparams: the parameters which we need to check
6922 @raise errors.OpPrereqError: if the parameters are not valid
6925 nodenames = _FilterVmNodes(lu, nodenames)
6926 result = lu.rpc.call_os_validate(required, nodenames, osname,
6927 [constants.OS_VALIDATE_PARAMETERS],
6929 for node, nres in result.items():
6930 # we don't check for offline cases since this should be run only
6931 # against the master node and/or an instance's nodes
6932 nres.Raise("OS Parameters validation failed on node %s" % node)
6933 if not nres.payload:
6934 lu.LogInfo("OS %s not found on node %s, validation skipped",
6938 class LUInstanceCreate(LogicalUnit):
6939 """Create an instance.
6942 HPATH = "instance-add"
6943 HTYPE = constants.HTYPE_INSTANCE
6946 def CheckArguments(self):
6950 # do not require name_check to ease forward/backward compatibility
6952 if self.op.no_install and self.op.start:
6953 self.LogInfo("No-installation mode selected, disabling startup")
6954 self.op.start = False
6955 # validate/normalize the instance name
6956 self.op.instance_name = \
6957 netutils.Hostname.GetNormalizedName(self.op.instance_name)
6959 if self.op.ip_check and not self.op.name_check:
6960 # TODO: make the ip check more flexible and not depend on the name check
6961 raise errors.OpPrereqError("Cannot do ip check without a name check",
6964 # check nics' parameter names
6965 for nic in self.op.nics:
6966 utils.ForceDictType(nic, constants.INIC_PARAMS_TYPES)
6968 # check disks. parameter names and consistent adopt/no-adopt strategy
6969 has_adopt = has_no_adopt = False
6970 for disk in self.op.disks:
6971 utils.ForceDictType(disk, constants.IDISK_PARAMS_TYPES)
6976 if has_adopt and has_no_adopt:
6977 raise errors.OpPrereqError("Either all disks are adopted or none is",
6980 if self.op.disk_template not in constants.DTS_MAY_ADOPT:
6981 raise errors.OpPrereqError("Disk adoption is not supported for the"
6982 " '%s' disk template" %
6983 self.op.disk_template,
6985 if self.op.iallocator is not None:
6986 raise errors.OpPrereqError("Disk adoption not allowed with an"
6987 " iallocator script", errors.ECODE_INVAL)
6988 if self.op.mode == constants.INSTANCE_IMPORT:
6989 raise errors.OpPrereqError("Disk adoption not allowed for"
6990 " instance import", errors.ECODE_INVAL)
6992 self.adopt_disks = has_adopt
6994 # instance name verification
6995 if self.op.name_check:
6996 self.hostname1 = netutils.GetHostname(name=self.op.instance_name)
6997 self.op.instance_name = self.hostname1.name
6998 # used in CheckPrereq for ip ping check
6999 self.check_ip = self.hostname1.ip
7001 self.check_ip = None
7003 # file storage checks
7004 if (self.op.file_driver and
7005 not self.op.file_driver in constants.FILE_DRIVER):
7006 raise errors.OpPrereqError("Invalid file driver name '%s'" %
7007 self.op.file_driver, errors.ECODE_INVAL)
7009 if self.op.file_storage_dir and os.path.isabs(self.op.file_storage_dir):
7010 raise errors.OpPrereqError("File storage directory path not absolute",
7013 ### Node/iallocator related checks
7014 _CheckIAllocatorOrNode(self, "iallocator", "pnode")
7016 if self.op.pnode is not None:
7017 if self.op.disk_template in constants.DTS_NET_MIRROR:
7018 if self.op.snode is None:
7019 raise errors.OpPrereqError("The networked disk templates need"
7020 " a mirror node", errors.ECODE_INVAL)
7022 self.LogWarning("Secondary node will be ignored on non-mirrored disk"
7024 self.op.snode = None
7026 self._cds = _GetClusterDomainSecret()
7028 if self.op.mode == constants.INSTANCE_IMPORT:
7029 # On import force_variant must be True, because if we forced it at
7030 # initial install, our only chance when importing it back is that it
7032 self.op.force_variant = True
7034 if self.op.no_install:
7035 self.LogInfo("No-installation mode has no effect during import")
7037 elif self.op.mode == constants.INSTANCE_CREATE:
7038 if self.op.os_type is None:
7039 raise errors.OpPrereqError("No guest OS specified",
7041 if self.op.os_type in self.cfg.GetClusterInfo().blacklisted_os:
7042 raise errors.OpPrereqError("Guest OS '%s' is not allowed for"
7043 " installation" % self.op.os_type,
7045 if self.op.disk_template is None:
7046 raise errors.OpPrereqError("No disk template specified",
7049 elif self.op.mode == constants.INSTANCE_REMOTE_IMPORT:
7050 # Check handshake to ensure both clusters have the same domain secret
7051 src_handshake = self.op.source_handshake
7052 if not src_handshake:
7053 raise errors.OpPrereqError("Missing source handshake",
7056 errmsg = masterd.instance.CheckRemoteExportHandshake(self._cds,
7059 raise errors.OpPrereqError("Invalid handshake: %s" % errmsg,
7062 # Load and check source CA
7063 self.source_x509_ca_pem = self.op.source_x509_ca
7064 if not self.source_x509_ca_pem:
7065 raise errors.OpPrereqError("Missing source X509 CA",
7069 (cert, _) = utils.LoadSignedX509Certificate(self.source_x509_ca_pem,
7071 except OpenSSL.crypto.Error, err:
7072 raise errors.OpPrereqError("Unable to load source X509 CA (%s)" %
7073 (err, ), errors.ECODE_INVAL)
7075 (errcode, msg) = utils.VerifyX509Certificate(cert, None, None)
7076 if errcode is not None:
7077 raise errors.OpPrereqError("Invalid source X509 CA (%s)" % (msg, ),
7080 self.source_x509_ca = cert
7082 src_instance_name = self.op.source_instance_name
7083 if not src_instance_name:
7084 raise errors.OpPrereqError("Missing source instance name",
7087 self.source_instance_name = \
7088 netutils.GetHostname(name=src_instance_name).name
7091 raise errors.OpPrereqError("Invalid instance creation mode %r" %
7092 self.op.mode, errors.ECODE_INVAL)
7094 def ExpandNames(self):
7095 """ExpandNames for CreateInstance.
7097 Figure out the right locks for instance creation.
7100 self.needed_locks = {}
7102 instance_name = self.op.instance_name
7103 # this is just a preventive check, but someone might still add this
7104 # instance in the meantime, and creation will fail at lock-add time
7105 if instance_name in self.cfg.GetInstanceList():
7106 raise errors.OpPrereqError("Instance '%s' is already in the cluster" %
7107 instance_name, errors.ECODE_EXISTS)
7109 self.add_locks[locking.LEVEL_INSTANCE] = instance_name
7111 if self.op.iallocator:
7112 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
7114 self.op.pnode = _ExpandNodeName(self.cfg, self.op.pnode)
7115 nodelist = [self.op.pnode]
7116 if self.op.snode is not None:
7117 self.op.snode = _ExpandNodeName(self.cfg, self.op.snode)
7118 nodelist.append(self.op.snode)
7119 self.needed_locks[locking.LEVEL_NODE] = nodelist
7121 # in case of import lock the source node too
7122 if self.op.mode == constants.INSTANCE_IMPORT:
7123 src_node = self.op.src_node
7124 src_path = self.op.src_path
7126 if src_path is None:
7127 self.op.src_path = src_path = self.op.instance_name
7129 if src_node is None:
7130 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
7131 self.op.src_node = None
7132 if os.path.isabs(src_path):
7133 raise errors.OpPrereqError("Importing an instance from an absolute"
7134 " path requires a source node option.",
7137 self.op.src_node = src_node = _ExpandNodeName(self.cfg, src_node)
7138 if self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET:
7139 self.needed_locks[locking.LEVEL_NODE].append(src_node)
7140 if not os.path.isabs(src_path):
7141 self.op.src_path = src_path = \
7142 utils.PathJoin(constants.EXPORT_DIR, src_path)
7144 def _RunAllocator(self):
7145 """Run the allocator based on input opcode.
7148 nics = [n.ToDict() for n in self.nics]
7149 ial = IAllocator(self.cfg, self.rpc,
7150 mode=constants.IALLOCATOR_MODE_ALLOC,
7151 name=self.op.instance_name,
7152 disk_template=self.op.disk_template,
7155 vcpus=self.be_full[constants.BE_VCPUS],
7156 mem_size=self.be_full[constants.BE_MEMORY],
7159 hypervisor=self.op.hypervisor,
7162 ial.Run(self.op.iallocator)
7165 raise errors.OpPrereqError("Can't compute nodes using"
7166 " iallocator '%s': %s" %
7167 (self.op.iallocator, ial.info),
7169 if len(ial.result) != ial.required_nodes:
7170 raise errors.OpPrereqError("iallocator '%s' returned invalid number"
7171 " of nodes (%s), required %s" %
7172 (self.op.iallocator, len(ial.result),
7173 ial.required_nodes), errors.ECODE_FAULT)
7174 self.op.pnode = ial.result[0]
7175 self.LogInfo("Selected nodes for instance %s via iallocator %s: %s",
7176 self.op.instance_name, self.op.iallocator,
7177 utils.CommaJoin(ial.result))
7178 if ial.required_nodes == 2:
7179 self.op.snode = ial.result[1]
7181 def BuildHooksEnv(self):
7184 This runs on master, primary and secondary nodes of the instance.
7188 "ADD_MODE": self.op.mode,
7190 if self.op.mode == constants.INSTANCE_IMPORT:
7191 env["SRC_NODE"] = self.op.src_node
7192 env["SRC_PATH"] = self.op.src_path
7193 env["SRC_IMAGES"] = self.src_images
7195 env.update(_BuildInstanceHookEnv(
7196 name=self.op.instance_name,
7197 primary_node=self.op.pnode,
7198 secondary_nodes=self.secondaries,
7199 status=self.op.start,
7200 os_type=self.op.os_type,
7201 memory=self.be_full[constants.BE_MEMORY],
7202 vcpus=self.be_full[constants.BE_VCPUS],
7203 nics=_NICListToTuple(self, self.nics),
7204 disk_template=self.op.disk_template,
7205 disks=[(d["size"], d["mode"]) for d in self.disks],
7208 hypervisor_name=self.op.hypervisor,
7211 nl = ([self.cfg.GetMasterNode(), self.op.pnode] +
7215 def _ReadExportInfo(self):
7216 """Reads the export information from disk.
7218 It will override the opcode source node and path with the actual
7219 information, if these two were not specified before.
7221 @return: the export information
7224 assert self.op.mode == constants.INSTANCE_IMPORT
7226 src_node = self.op.src_node
7227 src_path = self.op.src_path
7229 if src_node is None:
7230 locked_nodes = self.acquired_locks[locking.LEVEL_NODE]
7231 exp_list = self.rpc.call_export_list(locked_nodes)
7233 for node in exp_list:
7234 if exp_list[node].fail_msg:
7236 if src_path in exp_list[node].payload:
7238 self.op.src_node = src_node = node
7239 self.op.src_path = src_path = utils.PathJoin(constants.EXPORT_DIR,
7243 raise errors.OpPrereqError("No export found for relative path %s" %
7244 src_path, errors.ECODE_INVAL)
7246 _CheckNodeOnline(self, src_node)
7247 result = self.rpc.call_export_info(src_node, src_path)
7248 result.Raise("No export or invalid export found in dir %s" % src_path)
7250 export_info = objects.SerializableConfigParser.Loads(str(result.payload))
7251 if not export_info.has_section(constants.INISECT_EXP):
7252 raise errors.ProgrammerError("Corrupted export config",
7253 errors.ECODE_ENVIRON)
7255 ei_version = export_info.get(constants.INISECT_EXP, "version")
7256 if (int(ei_version) != constants.EXPORT_VERSION):
7257 raise errors.OpPrereqError("Wrong export version %s (wanted %d)" %
7258 (ei_version, constants.EXPORT_VERSION),
7259 errors.ECODE_ENVIRON)
7262 def _ReadExportParams(self, einfo):
7263 """Use export parameters as defaults.
7265 In case the opcode doesn't specify (as in override) some instance
7266 parameters, then try to use them from the export information, if
7270 self.op.os_type = einfo.get(constants.INISECT_EXP, "os")
7272 if self.op.disk_template is None:
7273 if einfo.has_option(constants.INISECT_INS, "disk_template"):
7274 self.op.disk_template = einfo.get(constants.INISECT_INS,
7277 raise errors.OpPrereqError("No disk template specified and the export"
7278 " is missing the disk_template information",
7281 if not self.op.disks:
7282 if einfo.has_option(constants.INISECT_INS, "disk_count"):
7284 # TODO: import the disk iv_name too
7285 for idx in range(einfo.getint(constants.INISECT_INS, "disk_count")):
7286 disk_sz = einfo.getint(constants.INISECT_INS, "disk%d_size" % idx)
7287 disks.append({"size": disk_sz})
7288 self.op.disks = disks
7290 raise errors.OpPrereqError("No disk info specified and the export"
7291 " is missing the disk information",
7294 if (not self.op.nics and
7295 einfo.has_option(constants.INISECT_INS, "nic_count")):
7297 for idx in range(einfo.getint(constants.INISECT_INS, "nic_count")):
7299 for name in list(constants.NICS_PARAMETERS) + ["ip", "mac"]:
7300 v = einfo.get(constants.INISECT_INS, "nic%d_%s" % (idx, name))
7305 if (self.op.hypervisor is None and
7306 einfo.has_option(constants.INISECT_INS, "hypervisor")):
7307 self.op.hypervisor = einfo.get(constants.INISECT_INS, "hypervisor")
7308 if einfo.has_section(constants.INISECT_HYP):
7309 # use the export parameters but do not override the ones
7310 # specified by the user
7311 for name, value in einfo.items(constants.INISECT_HYP):
7312 if name not in self.op.hvparams:
7313 self.op.hvparams[name] = value
7315 if einfo.has_section(constants.INISECT_BEP):
7316 # use the parameters, without overriding
7317 for name, value in einfo.items(constants.INISECT_BEP):
7318 if name not in self.op.beparams:
7319 self.op.beparams[name] = value
7321 # try to read the parameters old style, from the main section
7322 for name in constants.BES_PARAMETERS:
7323 if (name not in self.op.beparams and
7324 einfo.has_option(constants.INISECT_INS, name)):
7325 self.op.beparams[name] = einfo.get(constants.INISECT_INS, name)
7327 if einfo.has_section(constants.INISECT_OSP):
7328 # use the parameters, without overriding
7329 for name, value in einfo.items(constants.INISECT_OSP):
7330 if name not in self.op.osparams:
7331 self.op.osparams[name] = value
7333 def _RevertToDefaults(self, cluster):
7334 """Revert the instance parameters to the default values.
7338 hv_defs = cluster.SimpleFillHV(self.op.hypervisor, self.op.os_type, {})
7339 for name in self.op.hvparams.keys():
7340 if name in hv_defs and hv_defs[name] == self.op.hvparams[name]:
7341 del self.op.hvparams[name]
7343 be_defs = cluster.SimpleFillBE({})
7344 for name in self.op.beparams.keys():
7345 if name in be_defs and be_defs[name] == self.op.beparams[name]:
7346 del self.op.beparams[name]
7348 nic_defs = cluster.SimpleFillNIC({})
7349 for nic in self.op.nics:
7350 for name in constants.NICS_PARAMETERS:
7351 if name in nic and name in nic_defs and nic[name] == nic_defs[name]:
7354 os_defs = cluster.SimpleFillOS(self.op.os_type, {})
7355 for name in self.op.osparams.keys():
7356 if name in os_defs and os_defs[name] == self.op.osparams[name]:
7357 del self.op.osparams[name]
7359 def CheckPrereq(self):
7360 """Check prerequisites.
7363 if self.op.mode == constants.INSTANCE_IMPORT:
7364 export_info = self._ReadExportInfo()
7365 self._ReadExportParams(export_info)
7367 if (not self.cfg.GetVGName() and
7368 self.op.disk_template not in constants.DTS_NOT_LVM):
7369 raise errors.OpPrereqError("Cluster does not support lvm-based"
7370 " instances", errors.ECODE_STATE)
7372 if self.op.hypervisor is None:
7373 self.op.hypervisor = self.cfg.GetHypervisorType()
7375 cluster = self.cfg.GetClusterInfo()
7376 enabled_hvs = cluster.enabled_hypervisors
7377 if self.op.hypervisor not in enabled_hvs:
7378 raise errors.OpPrereqError("Selected hypervisor (%s) not enabled in the"
7379 " cluster (%s)" % (self.op.hypervisor,
7380 ",".join(enabled_hvs)),
7383 # check hypervisor parameter syntax (locally)
7384 utils.ForceDictType(self.op.hvparams, constants.HVS_PARAMETER_TYPES)
7385 filled_hvp = cluster.SimpleFillHV(self.op.hypervisor, self.op.os_type,
7387 hv_type = hypervisor.GetHypervisor(self.op.hypervisor)
7388 hv_type.CheckParameterSyntax(filled_hvp)
7389 self.hv_full = filled_hvp
7390 # check that we don't specify global parameters on an instance
7391 _CheckGlobalHvParams(self.op.hvparams)
7393 # fill and remember the beparams dict
7394 utils.ForceDictType(self.op.beparams, constants.BES_PARAMETER_TYPES)
7395 self.be_full = cluster.SimpleFillBE(self.op.beparams)
7397 # build os parameters
7398 self.os_full = cluster.SimpleFillOS(self.op.os_type, self.op.osparams)
7400 # now that hvp/bep are in final format, let's reset to defaults,
7402 if self.op.identify_defaults:
7403 self._RevertToDefaults(cluster)
7407 for idx, nic in enumerate(self.op.nics):
7408 nic_mode_req = nic.get("mode", None)
7409 nic_mode = nic_mode_req
7410 if nic_mode is None:
7411 nic_mode = cluster.nicparams[constants.PP_DEFAULT][constants.NIC_MODE]
7413 # in routed mode, for the first nic, the default ip is 'auto'
7414 if nic_mode == constants.NIC_MODE_ROUTED and idx == 0:
7415 default_ip_mode = constants.VALUE_AUTO
7417 default_ip_mode = constants.VALUE_NONE
7419 # ip validity checks
7420 ip = nic.get("ip", default_ip_mode)
7421 if ip is None or ip.lower() == constants.VALUE_NONE:
7423 elif ip.lower() == constants.VALUE_AUTO:
7424 if not self.op.name_check:
7425 raise errors.OpPrereqError("IP address set to auto but name checks"
7426 " have been skipped",
7428 nic_ip = self.hostname1.ip
7430 if not netutils.IPAddress.IsValid(ip):
7431 raise errors.OpPrereqError("Invalid IP address '%s'" % ip,
7435 # TODO: check the ip address for uniqueness
7436 if nic_mode == constants.NIC_MODE_ROUTED and not nic_ip:
7437 raise errors.OpPrereqError("Routed nic mode requires an ip address",
7440 # MAC address verification
7441 mac = nic.get("mac", constants.VALUE_AUTO)
7442 if mac not in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
7443 mac = utils.NormalizeAndValidateMac(mac)
7446 self.cfg.ReserveMAC(mac, self.proc.GetECId())
7447 except errors.ReservationError:
7448 raise errors.OpPrereqError("MAC address %s already in use"
7449 " in cluster" % mac,
7450 errors.ECODE_NOTUNIQUE)
7452 # bridge verification
7453 bridge = nic.get("bridge", None)
7454 link = nic.get("link", None)
7456 raise errors.OpPrereqError("Cannot pass 'bridge' and 'link'"
7457 " at the same time", errors.ECODE_INVAL)
7458 elif bridge and nic_mode == constants.NIC_MODE_ROUTED:
7459 raise errors.OpPrereqError("Cannot pass 'bridge' on a routed nic",
7466 nicparams[constants.NIC_MODE] = nic_mode_req
7468 nicparams[constants.NIC_LINK] = link
7470 check_params = cluster.SimpleFillNIC(nicparams)
7471 objects.NIC.CheckParameterSyntax(check_params)
7472 self.nics.append(objects.NIC(mac=mac, ip=nic_ip, nicparams=nicparams))
7474 # disk checks/pre-build
7476 for disk in self.op.disks:
7477 mode = disk.get("mode", constants.DISK_RDWR)
7478 if mode not in constants.DISK_ACCESS_SET:
7479 raise errors.OpPrereqError("Invalid disk access mode '%s'" %
7480 mode, errors.ECODE_INVAL)
7481 size = disk.get("size", None)
7483 raise errors.OpPrereqError("Missing disk size", errors.ECODE_INVAL)
7486 except (TypeError, ValueError):
7487 raise errors.OpPrereqError("Invalid disk size '%s'" % size,
7489 vg = disk.get("vg", self.cfg.GetVGName())
7490 new_disk = {"size": size, "mode": mode, "vg": vg}
7492 new_disk["adopt"] = disk["adopt"]
7493 self.disks.append(new_disk)
7495 if self.op.mode == constants.INSTANCE_IMPORT:
7497 # Check that the new instance doesn't have less disks than the export
7498 instance_disks = len(self.disks)
7499 export_disks = export_info.getint(constants.INISECT_INS, 'disk_count')
7500 if instance_disks < export_disks:
7501 raise errors.OpPrereqError("Not enough disks to import."
7502 " (instance: %d, export: %d)" %
7503 (instance_disks, export_disks),
7507 for idx in range(export_disks):
7508 option = 'disk%d_dump' % idx
7509 if export_info.has_option(constants.INISECT_INS, option):
7510 # FIXME: are the old os-es, disk sizes, etc. useful?
7511 export_name = export_info.get(constants.INISECT_INS, option)
7512 image = utils.PathJoin(self.op.src_path, export_name)
7513 disk_images.append(image)
7515 disk_images.append(False)
7517 self.src_images = disk_images
7519 old_name = export_info.get(constants.INISECT_INS, 'name')
7521 exp_nic_count = export_info.getint(constants.INISECT_INS, 'nic_count')
7522 except (TypeError, ValueError), err:
7523 raise errors.OpPrereqError("Invalid export file, nic_count is not"
7524 " an integer: %s" % str(err),
7526 if self.op.instance_name == old_name:
7527 for idx, nic in enumerate(self.nics):
7528 if nic.mac == constants.VALUE_AUTO and exp_nic_count >= idx:
7529 nic_mac_ini = 'nic%d_mac' % idx
7530 nic.mac = export_info.get(constants.INISECT_INS, nic_mac_ini)
7532 # ENDIF: self.op.mode == constants.INSTANCE_IMPORT
7534 # ip ping checks (we use the same ip that was resolved in ExpandNames)
7535 if self.op.ip_check:
7536 if netutils.TcpPing(self.check_ip, constants.DEFAULT_NODED_PORT):
7537 raise errors.OpPrereqError("IP %s of instance %s already in use" %
7538 (self.check_ip, self.op.instance_name),
7539 errors.ECODE_NOTUNIQUE)
7541 #### mac address generation
7542 # By generating here the mac address both the allocator and the hooks get
7543 # the real final mac address rather than the 'auto' or 'generate' value.
7544 # There is a race condition between the generation and the instance object
7545 # creation, which means that we know the mac is valid now, but we're not
7546 # sure it will be when we actually add the instance. If things go bad
7547 # adding the instance will abort because of a duplicate mac, and the
7548 # creation job will fail.
7549 for nic in self.nics:
7550 if nic.mac in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
7551 nic.mac = self.cfg.GenerateMAC(self.proc.GetECId())
7555 if self.op.iallocator is not None:
7556 self._RunAllocator()
7558 #### node related checks
7560 # check primary node
7561 self.pnode = pnode = self.cfg.GetNodeInfo(self.op.pnode)
7562 assert self.pnode is not None, \
7563 "Cannot retrieve locked node %s" % self.op.pnode
7565 raise errors.OpPrereqError("Cannot use offline primary node '%s'" %
7566 pnode.name, errors.ECODE_STATE)
7568 raise errors.OpPrereqError("Cannot use drained primary node '%s'" %
7569 pnode.name, errors.ECODE_STATE)
7570 if not pnode.vm_capable:
7571 raise errors.OpPrereqError("Cannot use non-vm_capable primary node"
7572 " '%s'" % pnode.name, errors.ECODE_STATE)
7574 self.secondaries = []
7576 # mirror node verification
7577 if self.op.disk_template in constants.DTS_NET_MIRROR:
7578 if self.op.snode == pnode.name:
7579 raise errors.OpPrereqError("The secondary node cannot be the"
7580 " primary node.", errors.ECODE_INVAL)
7581 _CheckNodeOnline(self, self.op.snode)
7582 _CheckNodeNotDrained(self, self.op.snode)
7583 _CheckNodeVmCapable(self, self.op.snode)
7584 self.secondaries.append(self.op.snode)
7586 nodenames = [pnode.name] + self.secondaries
7588 if not self.adopt_disks:
7589 # Check lv size requirements, if not adopting
7590 req_sizes = _ComputeDiskSizePerVG(self.op.disk_template, self.disks)
7591 _CheckNodesFreeDiskPerVG(self, nodenames, req_sizes)
7593 else: # instead, we must check the adoption data
7594 all_lvs = set([i["vg"] + "/" + i["adopt"] for i in self.disks])
7595 if len(all_lvs) != len(self.disks):
7596 raise errors.OpPrereqError("Duplicate volume names given for adoption",
7598 for lv_name in all_lvs:
7600 # FIXME: lv_name here is "vg/lv" need to ensure that other calls
7601 # to ReserveLV uses the same syntax
7602 self.cfg.ReserveLV(lv_name, self.proc.GetECId())
7603 except errors.ReservationError:
7604 raise errors.OpPrereqError("LV named %s used by another instance" %
7605 lv_name, errors.ECODE_NOTUNIQUE)
7607 vg_names = self.rpc.call_vg_list([pnode.name])[pnode.name]
7608 vg_names.Raise("Cannot get VG information from node %s" % pnode.name)
7610 node_lvs = self.rpc.call_lv_list([pnode.name],
7611 vg_names.payload.keys())[pnode.name]
7612 node_lvs.Raise("Cannot get LV information from node %s" % pnode.name)
7613 node_lvs = node_lvs.payload
7615 delta = all_lvs.difference(node_lvs.keys())
7617 raise errors.OpPrereqError("Missing logical volume(s): %s" %
7618 utils.CommaJoin(delta),
7620 online_lvs = [lv for lv in all_lvs if node_lvs[lv][2]]
7622 raise errors.OpPrereqError("Online logical volumes found, cannot"
7623 " adopt: %s" % utils.CommaJoin(online_lvs),
7625 # update the size of disk based on what is found
7626 for dsk in self.disks:
7627 dsk["size"] = int(float(node_lvs[dsk["vg"] + "/" + dsk["adopt"]][0]))
7629 _CheckHVParams(self, nodenames, self.op.hypervisor, self.op.hvparams)
7631 _CheckNodeHasOS(self, pnode.name, self.op.os_type, self.op.force_variant)
7632 # check OS parameters (remotely)
7633 _CheckOSParams(self, True, nodenames, self.op.os_type, self.os_full)
7635 _CheckNicsBridgesExist(self, self.nics, self.pnode.name)
7637 # memory check on primary node
7639 _CheckNodeFreeMemory(self, self.pnode.name,
7640 "creating instance %s" % self.op.instance_name,
7641 self.be_full[constants.BE_MEMORY],
7644 self.dry_run_result = list(nodenames)
7646 def Exec(self, feedback_fn):
7647 """Create and add the instance to the cluster.
7650 instance = self.op.instance_name
7651 pnode_name = self.pnode.name
7653 ht_kind = self.op.hypervisor
7654 if ht_kind in constants.HTS_REQ_PORT:
7655 network_port = self.cfg.AllocatePort()
7659 if constants.ENABLE_FILE_STORAGE:
7660 # this is needed because os.path.join does not accept None arguments
7661 if self.op.file_storage_dir is None:
7662 string_file_storage_dir = ""
7664 string_file_storage_dir = self.op.file_storage_dir
7666 # build the full file storage dir path
7667 file_storage_dir = utils.PathJoin(self.cfg.GetFileStorageDir(),
7668 string_file_storage_dir, instance)
7670 file_storage_dir = ""
7672 disks = _GenerateDiskTemplate(self,
7673 self.op.disk_template,
7674 instance, pnode_name,
7678 self.op.file_driver,
7682 iobj = objects.Instance(name=instance, os=self.op.os_type,
7683 primary_node=pnode_name,
7684 nics=self.nics, disks=disks,
7685 disk_template=self.op.disk_template,
7687 network_port=network_port,
7688 beparams=self.op.beparams,
7689 hvparams=self.op.hvparams,
7690 hypervisor=self.op.hypervisor,
7691 osparams=self.op.osparams,
7694 if self.adopt_disks:
7695 # rename LVs to the newly-generated names; we need to construct
7696 # 'fake' LV disks with the old data, plus the new unique_id
7697 tmp_disks = [objects.Disk.FromDict(v.ToDict()) for v in disks]
7699 for t_dsk, a_dsk in zip (tmp_disks, self.disks):
7700 rename_to.append(t_dsk.logical_id)
7701 t_dsk.logical_id = (t_dsk.logical_id[0], a_dsk["adopt"])
7702 self.cfg.SetDiskID(t_dsk, pnode_name)
7703 result = self.rpc.call_blockdev_rename(pnode_name,
7704 zip(tmp_disks, rename_to))
7705 result.Raise("Failed to rename adoped LVs")
7707 feedback_fn("* creating instance disks...")
7709 _CreateDisks(self, iobj)
7710 except errors.OpExecError:
7711 self.LogWarning("Device creation failed, reverting...")
7713 _RemoveDisks(self, iobj)
7715 self.cfg.ReleaseDRBDMinors(instance)
7718 if self.cfg.GetClusterInfo().prealloc_wipe_disks:
7719 feedback_fn("* wiping instance disks...")
7721 _WipeDisks(self, iobj)
7722 except errors.OpExecError:
7723 self.LogWarning("Device wiping failed, reverting...")
7725 _RemoveDisks(self, iobj)
7727 self.cfg.ReleaseDRBDMinors(instance)
7730 feedback_fn("adding instance %s to cluster config" % instance)
7732 self.cfg.AddInstance(iobj, self.proc.GetECId())
7734 # Declare that we don't want to remove the instance lock anymore, as we've
7735 # added the instance to the config
7736 del self.remove_locks[locking.LEVEL_INSTANCE]
7737 # Unlock all the nodes
7738 if self.op.mode == constants.INSTANCE_IMPORT:
7739 nodes_keep = [self.op.src_node]
7740 nodes_release = [node for node in self.acquired_locks[locking.LEVEL_NODE]
7741 if node != self.op.src_node]
7742 self.context.glm.release(locking.LEVEL_NODE, nodes_release)
7743 self.acquired_locks[locking.LEVEL_NODE] = nodes_keep
7745 self.context.glm.release(locking.LEVEL_NODE)
7746 del self.acquired_locks[locking.LEVEL_NODE]
7748 if self.op.wait_for_sync:
7749 disk_abort = not _WaitForSync(self, iobj)
7750 elif iobj.disk_template in constants.DTS_NET_MIRROR:
7751 # make sure the disks are not degraded (still sync-ing is ok)
7753 feedback_fn("* checking mirrors status")
7754 disk_abort = not _WaitForSync(self, iobj, oneshot=True)
7759 _RemoveDisks(self, iobj)
7760 self.cfg.RemoveInstance(iobj.name)
7761 # Make sure the instance lock gets removed
7762 self.remove_locks[locking.LEVEL_INSTANCE] = iobj.name
7763 raise errors.OpExecError("There are some degraded disks for"
7766 if iobj.disk_template != constants.DT_DISKLESS and not self.adopt_disks:
7767 if self.op.mode == constants.INSTANCE_CREATE:
7768 if not self.op.no_install:
7769 feedback_fn("* running the instance OS create scripts...")
7770 # FIXME: pass debug option from opcode to backend
7771 result = self.rpc.call_instance_os_add(pnode_name, iobj, False,
7772 self.op.debug_level)
7773 result.Raise("Could not add os for instance %s"
7774 " on node %s" % (instance, pnode_name))
7776 elif self.op.mode == constants.INSTANCE_IMPORT:
7777 feedback_fn("* running the instance OS import scripts...")
7781 for idx, image in enumerate(self.src_images):
7785 # FIXME: pass debug option from opcode to backend
7786 dt = masterd.instance.DiskTransfer("disk/%s" % idx,
7787 constants.IEIO_FILE, (image, ),
7788 constants.IEIO_SCRIPT,
7789 (iobj.disks[idx], idx),
7791 transfers.append(dt)
7794 masterd.instance.TransferInstanceData(self, feedback_fn,
7795 self.op.src_node, pnode_name,
7796 self.pnode.secondary_ip,
7798 if not compat.all(import_result):
7799 self.LogWarning("Some disks for instance %s on node %s were not"
7800 " imported successfully" % (instance, pnode_name))
7802 elif self.op.mode == constants.INSTANCE_REMOTE_IMPORT:
7803 feedback_fn("* preparing remote import...")
7804 # The source cluster will stop the instance before attempting to make a
7805 # connection. In some cases stopping an instance can take a long time,
7806 # hence the shutdown timeout is added to the connection timeout.
7807 connect_timeout = (constants.RIE_CONNECT_TIMEOUT +
7808 self.op.source_shutdown_timeout)
7809 timeouts = masterd.instance.ImportExportTimeouts(connect_timeout)
7811 assert iobj.primary_node == self.pnode.name
7813 masterd.instance.RemoteImport(self, feedback_fn, iobj, self.pnode,
7814 self.source_x509_ca,
7815 self._cds, timeouts)
7816 if not compat.all(disk_results):
7817 # TODO: Should the instance still be started, even if some disks
7818 # failed to import (valid for local imports, too)?
7819 self.LogWarning("Some disks for instance %s on node %s were not"
7820 " imported successfully" % (instance, pnode_name))
7822 # Run rename script on newly imported instance
7823 assert iobj.name == instance
7824 feedback_fn("Running rename script for %s" % instance)
7825 result = self.rpc.call_instance_run_rename(pnode_name, iobj,
7826 self.source_instance_name,
7827 self.op.debug_level)
7829 self.LogWarning("Failed to run rename script for %s on node"
7830 " %s: %s" % (instance, pnode_name, result.fail_msg))
7833 # also checked in the prereq part
7834 raise errors.ProgrammerError("Unknown OS initialization mode '%s'"
7838 iobj.admin_up = True
7839 self.cfg.Update(iobj, feedback_fn)
7840 logging.info("Starting instance %s on node %s", instance, pnode_name)
7841 feedback_fn("* starting instance...")
7842 result = self.rpc.call_instance_start(pnode_name, iobj, None, None)
7843 result.Raise("Could not start instance")
7845 return list(iobj.all_nodes)
7848 class LUInstanceConsole(NoHooksLU):
7849 """Connect to an instance's console.
7851 This is somewhat special in that it returns the command line that
7852 you need to run on the master node in order to connect to the
7858 def ExpandNames(self):
7859 self._ExpandAndLockInstance()
7861 def CheckPrereq(self):
7862 """Check prerequisites.
7864 This checks that the instance is in the cluster.
7867 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
7868 assert self.instance is not None, \
7869 "Cannot retrieve locked instance %s" % self.op.instance_name
7870 _CheckNodeOnline(self, self.instance.primary_node)
7872 def Exec(self, feedback_fn):
7873 """Connect to the console of an instance
7876 instance = self.instance
7877 node = instance.primary_node
7879 node_insts = self.rpc.call_instance_list([node],
7880 [instance.hypervisor])[node]
7881 node_insts.Raise("Can't get node information from %s" % node)
7883 if instance.name not in node_insts.payload:
7884 if instance.admin_up:
7885 state = constants.INSTST_ERRORDOWN
7887 state = constants.INSTST_ADMINDOWN
7888 raise errors.OpExecError("Instance %s is not running (state %s)" %
7889 (instance.name, state))
7891 logging.debug("Connecting to console of %s on %s", instance.name, node)
7893 return _GetInstanceConsole(self.cfg.GetClusterInfo(), instance)
7896 def _GetInstanceConsole(cluster, instance):
7897 """Returns console information for an instance.
7899 @type cluster: L{objects.Cluster}
7900 @type instance: L{objects.Instance}
7904 hyper = hypervisor.GetHypervisor(instance.hypervisor)
7905 # beparams and hvparams are passed separately, to avoid editing the
7906 # instance and then saving the defaults in the instance itself.
7907 hvparams = cluster.FillHV(instance)
7908 beparams = cluster.FillBE(instance)
7909 console = hyper.GetInstanceConsole(instance, hvparams, beparams)
7911 assert console.instance == instance.name
7912 assert console.Validate()
7914 return console.ToDict()
7917 class LUInstanceReplaceDisks(LogicalUnit):
7918 """Replace the disks of an instance.
7921 HPATH = "mirrors-replace"
7922 HTYPE = constants.HTYPE_INSTANCE
7925 def CheckArguments(self):
7926 TLReplaceDisks.CheckArguments(self.op.mode, self.op.remote_node,
7929 def ExpandNames(self):
7930 self._ExpandAndLockInstance()
7932 if self.op.iallocator is not None:
7933 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
7935 elif self.op.remote_node is not None:
7936 remote_node = _ExpandNodeName(self.cfg, self.op.remote_node)
7937 self.op.remote_node = remote_node
7939 # Warning: do not remove the locking of the new secondary here
7940 # unless DRBD8.AddChildren is changed to work in parallel;
7941 # currently it doesn't since parallel invocations of
7942 # FindUnusedMinor will conflict
7943 self.needed_locks[locking.LEVEL_NODE] = [remote_node]
7944 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_APPEND
7947 self.needed_locks[locking.LEVEL_NODE] = []
7948 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
7950 self.replacer = TLReplaceDisks(self, self.op.instance_name, self.op.mode,
7951 self.op.iallocator, self.op.remote_node,
7952 self.op.disks, False, self.op.early_release)
7954 self.tasklets = [self.replacer]
7956 def DeclareLocks(self, level):
7957 # If we're not already locking all nodes in the set we have to declare the
7958 # instance's primary/secondary nodes.
7959 if (level == locking.LEVEL_NODE and
7960 self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET):
7961 self._LockInstancesNodes()
7963 def BuildHooksEnv(self):
7966 This runs on the master, the primary and all the secondaries.
7969 instance = self.replacer.instance
7971 "MODE": self.op.mode,
7972 "NEW_SECONDARY": self.op.remote_node,
7973 "OLD_SECONDARY": instance.secondary_nodes[0],
7975 env.update(_BuildInstanceHookEnvByObject(self, instance))
7977 self.cfg.GetMasterNode(),
7978 instance.primary_node,
7980 if self.op.remote_node is not None:
7981 nl.append(self.op.remote_node)
7985 class TLReplaceDisks(Tasklet):
7986 """Replaces disks for an instance.
7988 Note: Locking is not within the scope of this class.
7991 def __init__(self, lu, instance_name, mode, iallocator_name, remote_node,
7992 disks, delay_iallocator, early_release):
7993 """Initializes this class.
7996 Tasklet.__init__(self, lu)
7999 self.instance_name = instance_name
8001 self.iallocator_name = iallocator_name
8002 self.remote_node = remote_node
8004 self.delay_iallocator = delay_iallocator
8005 self.early_release = early_release
8008 self.instance = None
8009 self.new_node = None
8010 self.target_node = None
8011 self.other_node = None
8012 self.remote_node_info = None
8013 self.node_secondary_ip = None
8016 def CheckArguments(mode, remote_node, iallocator):
8017 """Helper function for users of this class.
8020 # check for valid parameter combination
8021 if mode == constants.REPLACE_DISK_CHG:
8022 if remote_node is None and iallocator is None:
8023 raise errors.OpPrereqError("When changing the secondary either an"
8024 " iallocator script must be used or the"
8025 " new node given", errors.ECODE_INVAL)
8027 if remote_node is not None and iallocator is not None:
8028 raise errors.OpPrereqError("Give either the iallocator or the new"
8029 " secondary, not both", errors.ECODE_INVAL)
8031 elif remote_node is not None or iallocator is not None:
8032 # Not replacing the secondary
8033 raise errors.OpPrereqError("The iallocator and new node options can"
8034 " only be used when changing the"
8035 " secondary node", errors.ECODE_INVAL)
8038 def _RunAllocator(lu, iallocator_name, instance_name, relocate_from):
8039 """Compute a new secondary node using an IAllocator.
8042 ial = IAllocator(lu.cfg, lu.rpc,
8043 mode=constants.IALLOCATOR_MODE_RELOC,
8045 relocate_from=relocate_from)
8047 ial.Run(iallocator_name)
8050 raise errors.OpPrereqError("Can't compute nodes using iallocator '%s':"
8051 " %s" % (iallocator_name, ial.info),
8054 if len(ial.result) != ial.required_nodes:
8055 raise errors.OpPrereqError("iallocator '%s' returned invalid number"
8056 " of nodes (%s), required %s" %
8058 len(ial.result), ial.required_nodes),
8061 remote_node_name = ial.result[0]
8063 lu.LogInfo("Selected new secondary for instance '%s': %s",
8064 instance_name, remote_node_name)
8066 return remote_node_name
8068 def _FindFaultyDisks(self, node_name):
8069 return _FindFaultyInstanceDisks(self.cfg, self.rpc, self.instance,
8072 def CheckPrereq(self):
8073 """Check prerequisites.
8075 This checks that the instance is in the cluster.
8078 self.instance = instance = self.cfg.GetInstanceInfo(self.instance_name)
8079 assert instance is not None, \
8080 "Cannot retrieve locked instance %s" % self.instance_name
8082 if instance.disk_template != constants.DT_DRBD8:
8083 raise errors.OpPrereqError("Can only run replace disks for DRBD8-based"
8084 " instances", errors.ECODE_INVAL)
8086 if len(instance.secondary_nodes) != 1:
8087 raise errors.OpPrereqError("The instance has a strange layout,"
8088 " expected one secondary but found %d" %
8089 len(instance.secondary_nodes),
8092 if not self.delay_iallocator:
8093 self._CheckPrereq2()
8095 def _CheckPrereq2(self):
8096 """Check prerequisites, second part.
8098 This function should always be part of CheckPrereq. It was separated and is
8099 now called from Exec because during node evacuation iallocator was only
8100 called with an unmodified cluster model, not taking planned changes into
8104 instance = self.instance
8105 secondary_node = instance.secondary_nodes[0]
8107 if self.iallocator_name is None:
8108 remote_node = self.remote_node
8110 remote_node = self._RunAllocator(self.lu, self.iallocator_name,
8111 instance.name, instance.secondary_nodes)
8113 if remote_node is not None:
8114 self.remote_node_info = self.cfg.GetNodeInfo(remote_node)
8115 assert self.remote_node_info is not None, \
8116 "Cannot retrieve locked node %s" % remote_node
8118 self.remote_node_info = None
8120 if remote_node == self.instance.primary_node:
8121 raise errors.OpPrereqError("The specified node is the primary node of"
8122 " the instance.", errors.ECODE_INVAL)
8124 if remote_node == secondary_node:
8125 raise errors.OpPrereqError("The specified node is already the"
8126 " secondary node of the instance.",
8129 if self.disks and self.mode in (constants.REPLACE_DISK_AUTO,
8130 constants.REPLACE_DISK_CHG):
8131 raise errors.OpPrereqError("Cannot specify disks to be replaced",
8134 if self.mode == constants.REPLACE_DISK_AUTO:
8135 faulty_primary = self._FindFaultyDisks(instance.primary_node)
8136 faulty_secondary = self._FindFaultyDisks(secondary_node)
8138 if faulty_primary and faulty_secondary:
8139 raise errors.OpPrereqError("Instance %s has faulty disks on more than"
8140 " one node and can not be repaired"
8141 " automatically" % self.instance_name,
8145 self.disks = faulty_primary
8146 self.target_node = instance.primary_node
8147 self.other_node = secondary_node
8148 check_nodes = [self.target_node, self.other_node]
8149 elif faulty_secondary:
8150 self.disks = faulty_secondary
8151 self.target_node = secondary_node
8152 self.other_node = instance.primary_node
8153 check_nodes = [self.target_node, self.other_node]
8159 # Non-automatic modes
8160 if self.mode == constants.REPLACE_DISK_PRI:
8161 self.target_node = instance.primary_node
8162 self.other_node = secondary_node
8163 check_nodes = [self.target_node, self.other_node]
8165 elif self.mode == constants.REPLACE_DISK_SEC:
8166 self.target_node = secondary_node
8167 self.other_node = instance.primary_node
8168 check_nodes = [self.target_node, self.other_node]
8170 elif self.mode == constants.REPLACE_DISK_CHG:
8171 self.new_node = remote_node
8172 self.other_node = instance.primary_node
8173 self.target_node = secondary_node
8174 check_nodes = [self.new_node, self.other_node]
8176 _CheckNodeNotDrained(self.lu, remote_node)
8177 _CheckNodeVmCapable(self.lu, remote_node)
8179 old_node_info = self.cfg.GetNodeInfo(secondary_node)
8180 assert old_node_info is not None
8181 if old_node_info.offline and not self.early_release:
8182 # doesn't make sense to delay the release
8183 self.early_release = True
8184 self.lu.LogInfo("Old secondary %s is offline, automatically enabling"
8185 " early-release mode", secondary_node)
8188 raise errors.ProgrammerError("Unhandled disk replace mode (%s)" %
8191 # If not specified all disks should be replaced
8193 self.disks = range(len(self.instance.disks))
8195 for node in check_nodes:
8196 _CheckNodeOnline(self.lu, node)
8198 # Check whether disks are valid
8199 for disk_idx in self.disks:
8200 instance.FindDisk(disk_idx)
8202 # Get secondary node IP addresses
8205 for node_name in [self.target_node, self.other_node, self.new_node]:
8206 if node_name is not None:
8207 node_2nd_ip[node_name] = self.cfg.GetNodeInfo(node_name).secondary_ip
8209 self.node_secondary_ip = node_2nd_ip
8211 def Exec(self, feedback_fn):
8212 """Execute disk replacement.
8214 This dispatches the disk replacement to the appropriate handler.
8217 if self.delay_iallocator:
8218 self._CheckPrereq2()
8221 feedback_fn("No disks need replacement")
8224 feedback_fn("Replacing disk(s) %s for %s" %
8225 (utils.CommaJoin(self.disks), self.instance.name))
8227 activate_disks = (not self.instance.admin_up)
8229 # Activate the instance disks if we're replacing them on a down instance
8231 _StartInstanceDisks(self.lu, self.instance, True)
8234 # Should we replace the secondary node?
8235 if self.new_node is not None:
8236 fn = self._ExecDrbd8Secondary
8238 fn = self._ExecDrbd8DiskOnly
8240 return fn(feedback_fn)
8243 # Deactivate the instance disks if we're replacing them on a
8246 _SafeShutdownInstanceDisks(self.lu, self.instance)
8248 def _CheckVolumeGroup(self, nodes):
8249 self.lu.LogInfo("Checking volume groups")
8251 vgname = self.cfg.GetVGName()
8253 # Make sure volume group exists on all involved nodes
8254 results = self.rpc.call_vg_list(nodes)
8256 raise errors.OpExecError("Can't list volume groups on the nodes")
8260 res.Raise("Error checking node %s" % node)
8261 if vgname not in res.payload:
8262 raise errors.OpExecError("Volume group '%s' not found on node %s" %
8265 def _CheckDisksExistence(self, nodes):
8266 # Check disk existence
8267 for idx, dev in enumerate(self.instance.disks):
8268 if idx not in self.disks:
8272 self.lu.LogInfo("Checking disk/%d on %s" % (idx, node))
8273 self.cfg.SetDiskID(dev, node)
8275 result = self.rpc.call_blockdev_find(node, dev)
8277 msg = result.fail_msg
8278 if msg or not result.payload:
8280 msg = "disk not found"
8281 raise errors.OpExecError("Can't find disk/%d on node %s: %s" %
8284 def _CheckDisksConsistency(self, node_name, on_primary, ldisk):
8285 for idx, dev in enumerate(self.instance.disks):
8286 if idx not in self.disks:
8289 self.lu.LogInfo("Checking disk/%d consistency on node %s" %
8292 if not _CheckDiskConsistency(self.lu, dev, node_name, on_primary,
8294 raise errors.OpExecError("Node %s has degraded storage, unsafe to"
8295 " replace disks for instance %s" %
8296 (node_name, self.instance.name))
8298 def _CreateNewStorage(self, node_name):
8299 vgname = self.cfg.GetVGName()
8302 for idx, dev in enumerate(self.instance.disks):
8303 if idx not in self.disks:
8306 self.lu.LogInfo("Adding storage on %s for disk/%d" % (node_name, idx))
8308 self.cfg.SetDiskID(dev, node_name)
8310 lv_names = [".disk%d_%s" % (idx, suffix) for suffix in ["data", "meta"]]
8311 names = _GenerateUniqueNames(self.lu, lv_names)
8313 lv_data = objects.Disk(dev_type=constants.LD_LV, size=dev.size,
8314 logical_id=(vgname, names[0]))
8315 lv_meta = objects.Disk(dev_type=constants.LD_LV, size=128,
8316 logical_id=(vgname, names[1]))
8318 new_lvs = [lv_data, lv_meta]
8319 old_lvs = dev.children
8320 iv_names[dev.iv_name] = (dev, old_lvs, new_lvs)
8322 # we pass force_create=True to force the LVM creation
8323 for new_lv in new_lvs:
8324 _CreateBlockDev(self.lu, node_name, self.instance, new_lv, True,
8325 _GetInstanceInfoText(self.instance), False)
8329 def _CheckDevices(self, node_name, iv_names):
8330 for name, (dev, _, _) in iv_names.iteritems():
8331 self.cfg.SetDiskID(dev, node_name)
8333 result = self.rpc.call_blockdev_find(node_name, dev)
8335 msg = result.fail_msg
8336 if msg or not result.payload:
8338 msg = "disk not found"
8339 raise errors.OpExecError("Can't find DRBD device %s: %s" %
8342 if result.payload.is_degraded:
8343 raise errors.OpExecError("DRBD device %s is degraded!" % name)
8345 def _RemoveOldStorage(self, node_name, iv_names):
8346 for name, (_, old_lvs, _) in iv_names.iteritems():
8347 self.lu.LogInfo("Remove logical volumes for %s" % name)
8350 self.cfg.SetDiskID(lv, node_name)
8352 msg = self.rpc.call_blockdev_remove(node_name, lv).fail_msg
8354 self.lu.LogWarning("Can't remove old LV: %s" % msg,
8355 hint="remove unused LVs manually")
8357 def _ReleaseNodeLock(self, node_name):
8358 """Releases the lock for a given node."""
8359 self.lu.context.glm.release(locking.LEVEL_NODE, node_name)
8361 def _ExecDrbd8DiskOnly(self, feedback_fn):
8362 """Replace a disk on the primary or secondary for DRBD 8.
8364 The algorithm for replace is quite complicated:
8366 1. for each disk to be replaced:
8368 1. create new LVs on the target node with unique names
8369 1. detach old LVs from the drbd device
8370 1. rename old LVs to name_replaced.<time_t>
8371 1. rename new LVs to old LVs
8372 1. attach the new LVs (with the old names now) to the drbd device
8374 1. wait for sync across all devices
8376 1. for each modified disk:
8378 1. remove old LVs (which have the name name_replaces.<time_t>)
8380 Failures are not very well handled.
8385 # Step: check device activation
8386 self.lu.LogStep(1, steps_total, "Check device existence")
8387 self._CheckDisksExistence([self.other_node, self.target_node])
8388 self._CheckVolumeGroup([self.target_node, self.other_node])
8390 # Step: check other node consistency
8391 self.lu.LogStep(2, steps_total, "Check peer consistency")
8392 self._CheckDisksConsistency(self.other_node,
8393 self.other_node == self.instance.primary_node,
8396 # Step: create new storage
8397 self.lu.LogStep(3, steps_total, "Allocate new storage")
8398 iv_names = self._CreateNewStorage(self.target_node)
8400 # Step: for each lv, detach+rename*2+attach
8401 self.lu.LogStep(4, steps_total, "Changing drbd configuration")
8402 for dev, old_lvs, new_lvs in iv_names.itervalues():
8403 self.lu.LogInfo("Detaching %s drbd from local storage" % dev.iv_name)
8405 result = self.rpc.call_blockdev_removechildren(self.target_node, dev,
8407 result.Raise("Can't detach drbd from local storage on node"
8408 " %s for device %s" % (self.target_node, dev.iv_name))
8410 #cfg.Update(instance)
8412 # ok, we created the new LVs, so now we know we have the needed
8413 # storage; as such, we proceed on the target node to rename
8414 # old_lv to _old, and new_lv to old_lv; note that we rename LVs
8415 # using the assumption that logical_id == physical_id (which in
8416 # turn is the unique_id on that node)
8418 # FIXME(iustin): use a better name for the replaced LVs
8419 temp_suffix = int(time.time())
8420 ren_fn = lambda d, suff: (d.physical_id[0],
8421 d.physical_id[1] + "_replaced-%s" % suff)
8423 # Build the rename list based on what LVs exist on the node
8424 rename_old_to_new = []
8425 for to_ren in old_lvs:
8426 result = self.rpc.call_blockdev_find(self.target_node, to_ren)
8427 if not result.fail_msg and result.payload:
8429 rename_old_to_new.append((to_ren, ren_fn(to_ren, temp_suffix)))
8431 self.lu.LogInfo("Renaming the old LVs on the target node")
8432 result = self.rpc.call_blockdev_rename(self.target_node,
8434 result.Raise("Can't rename old LVs on node %s" % self.target_node)
8436 # Now we rename the new LVs to the old LVs
8437 self.lu.LogInfo("Renaming the new LVs on the target node")
8438 rename_new_to_old = [(new, old.physical_id)
8439 for old, new in zip(old_lvs, new_lvs)]
8440 result = self.rpc.call_blockdev_rename(self.target_node,
8442 result.Raise("Can't rename new LVs on node %s" % self.target_node)
8444 for old, new in zip(old_lvs, new_lvs):
8445 new.logical_id = old.logical_id
8446 self.cfg.SetDiskID(new, self.target_node)
8448 for disk in old_lvs:
8449 disk.logical_id = ren_fn(disk, temp_suffix)
8450 self.cfg.SetDiskID(disk, self.target_node)
8452 # Now that the new lvs have the old name, we can add them to the device
8453 self.lu.LogInfo("Adding new mirror component on %s" % self.target_node)
8454 result = self.rpc.call_blockdev_addchildren(self.target_node, dev,
8456 msg = result.fail_msg
8458 for new_lv in new_lvs:
8459 msg2 = self.rpc.call_blockdev_remove(self.target_node,
8462 self.lu.LogWarning("Can't rollback device %s: %s", dev, msg2,
8463 hint=("cleanup manually the unused logical"
8465 raise errors.OpExecError("Can't add local storage to drbd: %s" % msg)
8467 dev.children = new_lvs
8469 self.cfg.Update(self.instance, feedback_fn)
8472 if self.early_release:
8473 self.lu.LogStep(cstep, steps_total, "Removing old storage")
8475 self._RemoveOldStorage(self.target_node, iv_names)
8476 # WARNING: we release both node locks here, do not do other RPCs
8477 # than WaitForSync to the primary node
8478 self._ReleaseNodeLock([self.target_node, self.other_node])
8481 # This can fail as the old devices are degraded and _WaitForSync
8482 # does a combined result over all disks, so we don't check its return value
8483 self.lu.LogStep(cstep, steps_total, "Sync devices")
8485 _WaitForSync(self.lu, self.instance)
8487 # Check all devices manually
8488 self._CheckDevices(self.instance.primary_node, iv_names)
8490 # Step: remove old storage
8491 if not self.early_release:
8492 self.lu.LogStep(cstep, steps_total, "Removing old storage")
8494 self._RemoveOldStorage(self.target_node, iv_names)
8496 def _ExecDrbd8Secondary(self, feedback_fn):
8497 """Replace the secondary node for DRBD 8.
8499 The algorithm for replace is quite complicated:
8500 - for all disks of the instance:
8501 - create new LVs on the new node with same names
8502 - shutdown the drbd device on the old secondary
8503 - disconnect the drbd network on the primary
8504 - create the drbd device on the new secondary
8505 - network attach the drbd on the primary, using an artifice:
8506 the drbd code for Attach() will connect to the network if it
8507 finds a device which is connected to the good local disks but
8509 - wait for sync across all devices
8510 - remove all disks from the old secondary
8512 Failures are not very well handled.
8517 # Step: check device activation
8518 self.lu.LogStep(1, steps_total, "Check device existence")
8519 self._CheckDisksExistence([self.instance.primary_node])
8520 self._CheckVolumeGroup([self.instance.primary_node])
8522 # Step: check other node consistency
8523 self.lu.LogStep(2, steps_total, "Check peer consistency")
8524 self._CheckDisksConsistency(self.instance.primary_node, True, True)
8526 # Step: create new storage
8527 self.lu.LogStep(3, steps_total, "Allocate new storage")
8528 for idx, dev in enumerate(self.instance.disks):
8529 self.lu.LogInfo("Adding new local storage on %s for disk/%d" %
8530 (self.new_node, idx))
8531 # we pass force_create=True to force LVM creation
8532 for new_lv in dev.children:
8533 _CreateBlockDev(self.lu, self.new_node, self.instance, new_lv, True,
8534 _GetInstanceInfoText(self.instance), False)
8536 # Step 4: dbrd minors and drbd setups changes
8537 # after this, we must manually remove the drbd minors on both the
8538 # error and the success paths
8539 self.lu.LogStep(4, steps_total, "Changing drbd configuration")
8540 minors = self.cfg.AllocateDRBDMinor([self.new_node
8541 for dev in self.instance.disks],
8543 logging.debug("Allocated minors %r", minors)
8546 for idx, (dev, new_minor) in enumerate(zip(self.instance.disks, minors)):
8547 self.lu.LogInfo("activating a new drbd on %s for disk/%d" %
8548 (self.new_node, idx))
8549 # create new devices on new_node; note that we create two IDs:
8550 # one without port, so the drbd will be activated without
8551 # networking information on the new node at this stage, and one
8552 # with network, for the latter activation in step 4
8553 (o_node1, o_node2, o_port, o_minor1, o_minor2, o_secret) = dev.logical_id
8554 if self.instance.primary_node == o_node1:
8557 assert self.instance.primary_node == o_node2, "Three-node instance?"
8560 new_alone_id = (self.instance.primary_node, self.new_node, None,
8561 p_minor, new_minor, o_secret)
8562 new_net_id = (self.instance.primary_node, self.new_node, o_port,
8563 p_minor, new_minor, o_secret)
8565 iv_names[idx] = (dev, dev.children, new_net_id)
8566 logging.debug("Allocated new_minor: %s, new_logical_id: %s", new_minor,
8568 new_drbd = objects.Disk(dev_type=constants.LD_DRBD8,
8569 logical_id=new_alone_id,
8570 children=dev.children,
8573 _CreateSingleBlockDev(self.lu, self.new_node, self.instance, new_drbd,
8574 _GetInstanceInfoText(self.instance), False)
8575 except errors.GenericError:
8576 self.cfg.ReleaseDRBDMinors(self.instance.name)
8579 # We have new devices, shutdown the drbd on the old secondary
8580 for idx, dev in enumerate(self.instance.disks):
8581 self.lu.LogInfo("Shutting down drbd for disk/%d on old node" % idx)
8582 self.cfg.SetDiskID(dev, self.target_node)
8583 msg = self.rpc.call_blockdev_shutdown(self.target_node, dev).fail_msg
8585 self.lu.LogWarning("Failed to shutdown drbd for disk/%d on old"
8586 "node: %s" % (idx, msg),
8587 hint=("Please cleanup this device manually as"
8588 " soon as possible"))
8590 self.lu.LogInfo("Detaching primary drbds from the network (=> standalone)")
8591 result = self.rpc.call_drbd_disconnect_net([self.instance.primary_node],
8592 self.node_secondary_ip,
8593 self.instance.disks)\
8594 [self.instance.primary_node]
8596 msg = result.fail_msg
8598 # detaches didn't succeed (unlikely)
8599 self.cfg.ReleaseDRBDMinors(self.instance.name)
8600 raise errors.OpExecError("Can't detach the disks from the network on"
8601 " old node: %s" % (msg,))
8603 # if we managed to detach at least one, we update all the disks of
8604 # the instance to point to the new secondary
8605 self.lu.LogInfo("Updating instance configuration")
8606 for dev, _, new_logical_id in iv_names.itervalues():
8607 dev.logical_id = new_logical_id
8608 self.cfg.SetDiskID(dev, self.instance.primary_node)
8610 self.cfg.Update(self.instance, feedback_fn)
8612 # and now perform the drbd attach
8613 self.lu.LogInfo("Attaching primary drbds to new secondary"
8614 " (standalone => connected)")
8615 result = self.rpc.call_drbd_attach_net([self.instance.primary_node,
8617 self.node_secondary_ip,
8618 self.instance.disks,
8621 for to_node, to_result in result.items():
8622 msg = to_result.fail_msg
8624 self.lu.LogWarning("Can't attach drbd disks on node %s: %s",
8626 hint=("please do a gnt-instance info to see the"
8627 " status of disks"))
8629 if self.early_release:
8630 self.lu.LogStep(cstep, steps_total, "Removing old storage")
8632 self._RemoveOldStorage(self.target_node, iv_names)
8633 # WARNING: we release all node locks here, do not do other RPCs
8634 # than WaitForSync to the primary node
8635 self._ReleaseNodeLock([self.instance.primary_node,
8640 # This can fail as the old devices are degraded and _WaitForSync
8641 # does a combined result over all disks, so we don't check its return value
8642 self.lu.LogStep(cstep, steps_total, "Sync devices")
8644 _WaitForSync(self.lu, self.instance)
8646 # Check all devices manually
8647 self._CheckDevices(self.instance.primary_node, iv_names)
8649 # Step: remove old storage
8650 if not self.early_release:
8651 self.lu.LogStep(cstep, steps_total, "Removing old storage")
8652 self._RemoveOldStorage(self.target_node, iv_names)
8655 class LURepairNodeStorage(NoHooksLU):
8656 """Repairs the volume group on a node.
8661 def CheckArguments(self):
8662 self.op.node_name = _ExpandNodeName(self.cfg, self.op.node_name)
8664 storage_type = self.op.storage_type
8666 if (constants.SO_FIX_CONSISTENCY not in
8667 constants.VALID_STORAGE_OPERATIONS.get(storage_type, [])):
8668 raise errors.OpPrereqError("Storage units of type '%s' can not be"
8669 " repaired" % storage_type,
8672 def ExpandNames(self):
8673 self.needed_locks = {
8674 locking.LEVEL_NODE: [self.op.node_name],
8677 def _CheckFaultyDisks(self, instance, node_name):
8678 """Ensure faulty disks abort the opcode or at least warn."""
8680 if _FindFaultyInstanceDisks(self.cfg, self.rpc, instance,
8682 raise errors.OpPrereqError("Instance '%s' has faulty disks on"
8683 " node '%s'" % (instance.name, node_name),
8685 except errors.OpPrereqError, err:
8686 if self.op.ignore_consistency:
8687 self.proc.LogWarning(str(err.args[0]))
8691 def CheckPrereq(self):
8692 """Check prerequisites.
8695 # Check whether any instance on this node has faulty disks
8696 for inst in _GetNodeInstances(self.cfg, self.op.node_name):
8697 if not inst.admin_up:
8699 check_nodes = set(inst.all_nodes)
8700 check_nodes.discard(self.op.node_name)
8701 for inst_node_name in check_nodes:
8702 self._CheckFaultyDisks(inst, inst_node_name)
8704 def Exec(self, feedback_fn):
8705 feedback_fn("Repairing storage unit '%s' on %s ..." %
8706 (self.op.name, self.op.node_name))
8708 st_args = _GetStorageTypeArgs(self.cfg, self.op.storage_type)
8709 result = self.rpc.call_storage_execute(self.op.node_name,
8710 self.op.storage_type, st_args,
8712 constants.SO_FIX_CONSISTENCY)
8713 result.Raise("Failed to repair storage unit '%s' on %s" %
8714 (self.op.name, self.op.node_name))
8717 class LUNodeEvacStrategy(NoHooksLU):
8718 """Computes the node evacuation strategy.
8723 def CheckArguments(self):
8724 _CheckIAllocatorOrNode(self, "iallocator", "remote_node")
8726 def ExpandNames(self):
8727 self.op.nodes = _GetWantedNodes(self, self.op.nodes)
8728 self.needed_locks = locks = {}
8729 if self.op.remote_node is None:
8730 locks[locking.LEVEL_NODE] = locking.ALL_SET
8732 self.op.remote_node = _ExpandNodeName(self.cfg, self.op.remote_node)
8733 locks[locking.LEVEL_NODE] = self.op.nodes + [self.op.remote_node]
8735 def Exec(self, feedback_fn):
8736 if self.op.remote_node is not None:
8738 for node in self.op.nodes:
8739 instances.extend(_GetNodeSecondaryInstances(self.cfg, node))
8742 if i.primary_node == self.op.remote_node:
8743 raise errors.OpPrereqError("Node %s is the primary node of"
8744 " instance %s, cannot use it as"
8746 (self.op.remote_node, i.name),
8748 result.append([i.name, self.op.remote_node])
8750 ial = IAllocator(self.cfg, self.rpc,
8751 mode=constants.IALLOCATOR_MODE_MEVAC,
8752 evac_nodes=self.op.nodes)
8753 ial.Run(self.op.iallocator, validate=True)
8755 raise errors.OpExecError("No valid evacuation solution: %s" % ial.info,
8761 class LUInstanceGrowDisk(LogicalUnit):
8762 """Grow a disk of an instance.
8766 HTYPE = constants.HTYPE_INSTANCE
8769 def ExpandNames(self):
8770 self._ExpandAndLockInstance()
8771 self.needed_locks[locking.LEVEL_NODE] = []
8772 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
8774 def DeclareLocks(self, level):
8775 if level == locking.LEVEL_NODE:
8776 self._LockInstancesNodes()
8778 def BuildHooksEnv(self):
8781 This runs on the master, the primary and all the secondaries.
8785 "DISK": self.op.disk,
8786 "AMOUNT": self.op.amount,
8788 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
8789 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
8792 def CheckPrereq(self):
8793 """Check prerequisites.
8795 This checks that the instance is in the cluster.
8798 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
8799 assert instance is not None, \
8800 "Cannot retrieve locked instance %s" % self.op.instance_name
8801 nodenames = list(instance.all_nodes)
8802 for node in nodenames:
8803 _CheckNodeOnline(self, node)
8805 self.instance = instance
8807 if instance.disk_template not in constants.DTS_GROWABLE:
8808 raise errors.OpPrereqError("Instance's disk layout does not support"
8809 " growing.", errors.ECODE_INVAL)
8811 self.disk = instance.FindDisk(self.op.disk)
8813 if instance.disk_template != constants.DT_FILE:
8814 # TODO: check the free disk space for file, when that feature
8816 _CheckNodesFreeDiskPerVG(self, nodenames,
8817 self.disk.ComputeGrowth(self.op.amount))
8819 def Exec(self, feedback_fn):
8820 """Execute disk grow.
8823 instance = self.instance
8826 disks_ok, _ = _AssembleInstanceDisks(self, self.instance, disks=[disk])
8828 raise errors.OpExecError("Cannot activate block device to grow")
8830 for node in instance.all_nodes:
8831 self.cfg.SetDiskID(disk, node)
8832 result = self.rpc.call_blockdev_grow(node, disk, self.op.amount)
8833 result.Raise("Grow request failed to node %s" % node)
8835 # TODO: Rewrite code to work properly
8836 # DRBD goes into sync mode for a short amount of time after executing the
8837 # "resize" command. DRBD 8.x below version 8.0.13 contains a bug whereby
8838 # calling "resize" in sync mode fails. Sleeping for a short amount of
8839 # time is a work-around.
8842 disk.RecordGrow(self.op.amount)
8843 self.cfg.Update(instance, feedback_fn)
8844 if self.op.wait_for_sync:
8845 disk_abort = not _WaitForSync(self, instance, disks=[disk])
8847 self.proc.LogWarning("Warning: disk sync-ing has not returned a good"
8848 " status.\nPlease check the instance.")
8849 if not instance.admin_up:
8850 _SafeShutdownInstanceDisks(self, instance, disks=[disk])
8851 elif not instance.admin_up:
8852 self.proc.LogWarning("Not shutting down the disk even if the instance is"
8853 " not supposed to be running because no wait for"
8854 " sync mode was requested.")
8857 class LUInstanceQueryData(NoHooksLU):
8858 """Query runtime instance data.
8863 def ExpandNames(self):
8864 self.needed_locks = {}
8865 self.share_locks = dict.fromkeys(locking.LEVELS, 1)
8867 if self.op.instances:
8868 self.wanted_names = []
8869 for name in self.op.instances:
8870 full_name = _ExpandInstanceName(self.cfg, name)
8871 self.wanted_names.append(full_name)
8872 self.needed_locks[locking.LEVEL_INSTANCE] = self.wanted_names
8874 self.wanted_names = None
8875 self.needed_locks[locking.LEVEL_INSTANCE] = locking.ALL_SET
8877 self.needed_locks[locking.LEVEL_NODE] = []
8878 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
8880 def DeclareLocks(self, level):
8881 if level == locking.LEVEL_NODE:
8882 self._LockInstancesNodes()
8884 def CheckPrereq(self):
8885 """Check prerequisites.
8887 This only checks the optional instance list against the existing names.
8890 if self.wanted_names is None:
8891 self.wanted_names = self.acquired_locks[locking.LEVEL_INSTANCE]
8893 self.wanted_instances = [self.cfg.GetInstanceInfo(name) for name
8894 in self.wanted_names]
8896 def _ComputeBlockdevStatus(self, node, instance_name, dev):
8897 """Returns the status of a block device
8900 if self.op.static or not node:
8903 self.cfg.SetDiskID(dev, node)
8905 result = self.rpc.call_blockdev_find(node, dev)
8909 result.Raise("Can't compute disk status for %s" % instance_name)
8911 status = result.payload
8915 return (status.dev_path, status.major, status.minor,
8916 status.sync_percent, status.estimated_time,
8917 status.is_degraded, status.ldisk_status)
8919 def _ComputeDiskStatus(self, instance, snode, dev):
8920 """Compute block device status.
8923 if dev.dev_type in constants.LDS_DRBD:
8924 # we change the snode then (otherwise we use the one passed in)
8925 if dev.logical_id[0] == instance.primary_node:
8926 snode = dev.logical_id[1]
8928 snode = dev.logical_id[0]
8930 dev_pstatus = self._ComputeBlockdevStatus(instance.primary_node,
8932 dev_sstatus = self._ComputeBlockdevStatus(snode, instance.name, dev)
8935 dev_children = [self._ComputeDiskStatus(instance, snode, child)
8936 for child in dev.children]
8941 "iv_name": dev.iv_name,
8942 "dev_type": dev.dev_type,
8943 "logical_id": dev.logical_id,
8944 "physical_id": dev.physical_id,
8945 "pstatus": dev_pstatus,
8946 "sstatus": dev_sstatus,
8947 "children": dev_children,
8954 def Exec(self, feedback_fn):
8955 """Gather and return data"""
8958 cluster = self.cfg.GetClusterInfo()
8960 for instance in self.wanted_instances:
8961 if not self.op.static:
8962 remote_info = self.rpc.call_instance_info(instance.primary_node,
8964 instance.hypervisor)
8965 remote_info.Raise("Error checking node %s" % instance.primary_node)
8966 remote_info = remote_info.payload
8967 if remote_info and "state" in remote_info:
8970 remote_state = "down"
8973 if instance.admin_up:
8976 config_state = "down"
8978 disks = [self._ComputeDiskStatus(instance, None, device)
8979 for device in instance.disks]
8982 "name": instance.name,
8983 "config_state": config_state,
8984 "run_state": remote_state,
8985 "pnode": instance.primary_node,
8986 "snodes": instance.secondary_nodes,
8988 # this happens to be the same format used for hooks
8989 "nics": _NICListToTuple(self, instance.nics),
8990 "disk_template": instance.disk_template,
8992 "hypervisor": instance.hypervisor,
8993 "network_port": instance.network_port,
8994 "hv_instance": instance.hvparams,
8995 "hv_actual": cluster.FillHV(instance, skip_globals=True),
8996 "be_instance": instance.beparams,
8997 "be_actual": cluster.FillBE(instance),
8998 "os_instance": instance.osparams,
8999 "os_actual": cluster.SimpleFillOS(instance.os, instance.osparams),
9000 "serial_no": instance.serial_no,
9001 "mtime": instance.mtime,
9002 "ctime": instance.ctime,
9003 "uuid": instance.uuid,
9006 result[instance.name] = idict
9011 class LUInstanceSetParams(LogicalUnit):
9012 """Modifies an instances's parameters.
9015 HPATH = "instance-modify"
9016 HTYPE = constants.HTYPE_INSTANCE
9019 def CheckArguments(self):
9020 if not (self.op.nics or self.op.disks or self.op.disk_template or
9021 self.op.hvparams or self.op.beparams or self.op.os_name):
9022 raise errors.OpPrereqError("No changes submitted", errors.ECODE_INVAL)
9024 if self.op.hvparams:
9025 _CheckGlobalHvParams(self.op.hvparams)
9029 for disk_op, disk_dict in self.op.disks:
9030 utils.ForceDictType(disk_dict, constants.IDISK_PARAMS_TYPES)
9031 if disk_op == constants.DDM_REMOVE:
9034 elif disk_op == constants.DDM_ADD:
9037 if not isinstance(disk_op, int):
9038 raise errors.OpPrereqError("Invalid disk index", errors.ECODE_INVAL)
9039 if not isinstance(disk_dict, dict):
9040 msg = "Invalid disk value: expected dict, got '%s'" % disk_dict
9041 raise errors.OpPrereqError(msg, errors.ECODE_INVAL)
9043 if disk_op == constants.DDM_ADD:
9044 mode = disk_dict.setdefault('mode', constants.DISK_RDWR)
9045 if mode not in constants.DISK_ACCESS_SET:
9046 raise errors.OpPrereqError("Invalid disk access mode '%s'" % mode,
9048 size = disk_dict.get('size', None)
9050 raise errors.OpPrereqError("Required disk parameter size missing",
9054 except (TypeError, ValueError), err:
9055 raise errors.OpPrereqError("Invalid disk size parameter: %s" %
9056 str(err), errors.ECODE_INVAL)
9057 disk_dict['size'] = size
9059 # modification of disk
9060 if 'size' in disk_dict:
9061 raise errors.OpPrereqError("Disk size change not possible, use"
9062 " grow-disk", errors.ECODE_INVAL)
9064 if disk_addremove > 1:
9065 raise errors.OpPrereqError("Only one disk add or remove operation"
9066 " supported at a time", errors.ECODE_INVAL)
9068 if self.op.disks and self.op.disk_template is not None:
9069 raise errors.OpPrereqError("Disk template conversion and other disk"
9070 " changes not supported at the same time",
9073 if (self.op.disk_template and
9074 self.op.disk_template in constants.DTS_NET_MIRROR and
9075 self.op.remote_node is None):
9076 raise errors.OpPrereqError("Changing the disk template to a mirrored"
9077 " one requires specifying a secondary node",
9082 for nic_op, nic_dict in self.op.nics:
9083 utils.ForceDictType(nic_dict, constants.INIC_PARAMS_TYPES)
9084 if nic_op == constants.DDM_REMOVE:
9087 elif nic_op == constants.DDM_ADD:
9090 if not isinstance(nic_op, int):
9091 raise errors.OpPrereqError("Invalid nic index", errors.ECODE_INVAL)
9092 if not isinstance(nic_dict, dict):
9093 msg = "Invalid nic value: expected dict, got '%s'" % nic_dict
9094 raise errors.OpPrereqError(msg, errors.ECODE_INVAL)
9096 # nic_dict should be a dict
9097 nic_ip = nic_dict.get('ip', None)
9098 if nic_ip is not None:
9099 if nic_ip.lower() == constants.VALUE_NONE:
9100 nic_dict['ip'] = None
9102 if not netutils.IPAddress.IsValid(nic_ip):
9103 raise errors.OpPrereqError("Invalid IP address '%s'" % nic_ip,
9106 nic_bridge = nic_dict.get('bridge', None)
9107 nic_link = nic_dict.get('link', None)
9108 if nic_bridge and nic_link:
9109 raise errors.OpPrereqError("Cannot pass 'bridge' and 'link'"
9110 " at the same time", errors.ECODE_INVAL)
9111 elif nic_bridge and nic_bridge.lower() == constants.VALUE_NONE:
9112 nic_dict['bridge'] = None
9113 elif nic_link and nic_link.lower() == constants.VALUE_NONE:
9114 nic_dict['link'] = None
9116 if nic_op == constants.DDM_ADD:
9117 nic_mac = nic_dict.get('mac', None)
9119 nic_dict['mac'] = constants.VALUE_AUTO
9121 if 'mac' in nic_dict:
9122 nic_mac = nic_dict['mac']
9123 if nic_mac not in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
9124 nic_mac = utils.NormalizeAndValidateMac(nic_mac)
9126 if nic_op != constants.DDM_ADD and nic_mac == constants.VALUE_AUTO:
9127 raise errors.OpPrereqError("'auto' is not a valid MAC address when"
9128 " modifying an existing nic",
9131 if nic_addremove > 1:
9132 raise errors.OpPrereqError("Only one NIC add or remove operation"
9133 " supported at a time", errors.ECODE_INVAL)
9135 def ExpandNames(self):
9136 self._ExpandAndLockInstance()
9137 self.needed_locks[locking.LEVEL_NODE] = []
9138 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
9140 def DeclareLocks(self, level):
9141 if level == locking.LEVEL_NODE:
9142 self._LockInstancesNodes()
9143 if self.op.disk_template and self.op.remote_node:
9144 self.op.remote_node = _ExpandNodeName(self.cfg, self.op.remote_node)
9145 self.needed_locks[locking.LEVEL_NODE].append(self.op.remote_node)
9147 def BuildHooksEnv(self):
9150 This runs on the master, primary and secondaries.
9154 if constants.BE_MEMORY in self.be_new:
9155 args['memory'] = self.be_new[constants.BE_MEMORY]
9156 if constants.BE_VCPUS in self.be_new:
9157 args['vcpus'] = self.be_new[constants.BE_VCPUS]
9158 # TODO: export disk changes. Note: _BuildInstanceHookEnv* don't export disk
9159 # information at all.
9162 nic_override = dict(self.op.nics)
9163 for idx, nic in enumerate(self.instance.nics):
9164 if idx in nic_override:
9165 this_nic_override = nic_override[idx]
9167 this_nic_override = {}
9168 if 'ip' in this_nic_override:
9169 ip = this_nic_override['ip']
9172 if 'mac' in this_nic_override:
9173 mac = this_nic_override['mac']
9176 if idx in self.nic_pnew:
9177 nicparams = self.nic_pnew[idx]
9179 nicparams = self.cluster.SimpleFillNIC(nic.nicparams)
9180 mode = nicparams[constants.NIC_MODE]
9181 link = nicparams[constants.NIC_LINK]
9182 args['nics'].append((ip, mac, mode, link))
9183 if constants.DDM_ADD in nic_override:
9184 ip = nic_override[constants.DDM_ADD].get('ip', None)
9185 mac = nic_override[constants.DDM_ADD]['mac']
9186 nicparams = self.nic_pnew[constants.DDM_ADD]
9187 mode = nicparams[constants.NIC_MODE]
9188 link = nicparams[constants.NIC_LINK]
9189 args['nics'].append((ip, mac, mode, link))
9190 elif constants.DDM_REMOVE in nic_override:
9191 del args['nics'][-1]
9193 env = _BuildInstanceHookEnvByObject(self, self.instance, override=args)
9194 if self.op.disk_template:
9195 env["NEW_DISK_TEMPLATE"] = self.op.disk_template
9196 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
9199 def CheckPrereq(self):
9200 """Check prerequisites.
9202 This only checks the instance list against the existing names.
9205 # checking the new params on the primary/secondary nodes
9207 instance = self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
9208 cluster = self.cluster = self.cfg.GetClusterInfo()
9209 assert self.instance is not None, \
9210 "Cannot retrieve locked instance %s" % self.op.instance_name
9211 pnode = instance.primary_node
9212 nodelist = list(instance.all_nodes)
9215 if self.op.os_name and not self.op.force:
9216 _CheckNodeHasOS(self, instance.primary_node, self.op.os_name,
9217 self.op.force_variant)
9218 instance_os = self.op.os_name
9220 instance_os = instance.os
9222 if self.op.disk_template:
9223 if instance.disk_template == self.op.disk_template:
9224 raise errors.OpPrereqError("Instance already has disk template %s" %
9225 instance.disk_template, errors.ECODE_INVAL)
9227 if (instance.disk_template,
9228 self.op.disk_template) not in self._DISK_CONVERSIONS:
9229 raise errors.OpPrereqError("Unsupported disk template conversion from"
9230 " %s to %s" % (instance.disk_template,
9231 self.op.disk_template),
9233 _CheckInstanceDown(self, instance, "cannot change disk template")
9234 if self.op.disk_template in constants.DTS_NET_MIRROR:
9235 if self.op.remote_node == pnode:
9236 raise errors.OpPrereqError("Given new secondary node %s is the same"
9237 " as the primary node of the instance" %
9238 self.op.remote_node, errors.ECODE_STATE)
9239 _CheckNodeOnline(self, self.op.remote_node)
9240 _CheckNodeNotDrained(self, self.op.remote_node)
9241 # FIXME: here we assume that the old instance type is DT_PLAIN
9242 assert instance.disk_template == constants.DT_PLAIN
9243 disks = [{"size": d.size, "vg": d.logical_id[0]}
9244 for d in instance.disks]
9245 required = _ComputeDiskSizePerVG(self.op.disk_template, disks)
9246 _CheckNodesFreeDiskPerVG(self, [self.op.remote_node], required)
9248 # hvparams processing
9249 if self.op.hvparams:
9250 hv_type = instance.hypervisor
9251 i_hvdict = _GetUpdatedParams(instance.hvparams, self.op.hvparams)
9252 utils.ForceDictType(i_hvdict, constants.HVS_PARAMETER_TYPES)
9253 hv_new = cluster.SimpleFillHV(hv_type, instance.os, i_hvdict)
9256 hypervisor.GetHypervisor(hv_type).CheckParameterSyntax(hv_new)
9257 _CheckHVParams(self, nodelist, instance.hypervisor, hv_new)
9258 self.hv_new = hv_new # the new actual values
9259 self.hv_inst = i_hvdict # the new dict (without defaults)
9261 self.hv_new = self.hv_inst = {}
9263 # beparams processing
9264 if self.op.beparams:
9265 i_bedict = _GetUpdatedParams(instance.beparams, self.op.beparams,
9267 utils.ForceDictType(i_bedict, constants.BES_PARAMETER_TYPES)
9268 be_new = cluster.SimpleFillBE(i_bedict)
9269 self.be_new = be_new # the new actual values
9270 self.be_inst = i_bedict # the new dict (without defaults)
9272 self.be_new = self.be_inst = {}
9274 # osparams processing
9275 if self.op.osparams:
9276 i_osdict = _GetUpdatedParams(instance.osparams, self.op.osparams)
9277 _CheckOSParams(self, True, nodelist, instance_os, i_osdict)
9278 self.os_inst = i_osdict # the new dict (without defaults)
9284 if constants.BE_MEMORY in self.op.beparams and not self.op.force:
9285 mem_check_list = [pnode]
9286 if be_new[constants.BE_AUTO_BALANCE]:
9287 # either we changed auto_balance to yes or it was from before
9288 mem_check_list.extend(instance.secondary_nodes)
9289 instance_info = self.rpc.call_instance_info(pnode, instance.name,
9290 instance.hypervisor)
9291 nodeinfo = self.rpc.call_node_info(mem_check_list, None,
9292 instance.hypervisor)
9293 pninfo = nodeinfo[pnode]
9294 msg = pninfo.fail_msg
9296 # Assume the primary node is unreachable and go ahead
9297 self.warn.append("Can't get info from primary node %s: %s" %
9299 elif not isinstance(pninfo.payload.get('memory_free', None), int):
9300 self.warn.append("Node data from primary node %s doesn't contain"
9301 " free memory information" % pnode)
9302 elif instance_info.fail_msg:
9303 self.warn.append("Can't get instance runtime information: %s" %
9304 instance_info.fail_msg)
9306 if instance_info.payload:
9307 current_mem = int(instance_info.payload['memory'])
9309 # Assume instance not running
9310 # (there is a slight race condition here, but it's not very probable,
9311 # and we have no other way to check)
9313 miss_mem = (be_new[constants.BE_MEMORY] - current_mem -
9314 pninfo.payload['memory_free'])
9316 raise errors.OpPrereqError("This change will prevent the instance"
9317 " from starting, due to %d MB of memory"
9318 " missing on its primary node" % miss_mem,
9321 if be_new[constants.BE_AUTO_BALANCE]:
9322 for node, nres in nodeinfo.items():
9323 if node not in instance.secondary_nodes:
9327 self.warn.append("Can't get info from secondary node %s: %s" %
9329 elif not isinstance(nres.payload.get('memory_free', None), int):
9330 self.warn.append("Secondary node %s didn't return free"
9331 " memory information" % node)
9332 elif be_new[constants.BE_MEMORY] > nres.payload['memory_free']:
9333 self.warn.append("Not enough memory to failover instance to"
9334 " secondary node %s" % node)
9339 for nic_op, nic_dict in self.op.nics:
9340 if nic_op == constants.DDM_REMOVE:
9341 if not instance.nics:
9342 raise errors.OpPrereqError("Instance has no NICs, cannot remove",
9345 if nic_op != constants.DDM_ADD:
9347 if not instance.nics:
9348 raise errors.OpPrereqError("Invalid NIC index %s, instance has"
9349 " no NICs" % nic_op,
9351 if nic_op < 0 or nic_op >= len(instance.nics):
9352 raise errors.OpPrereqError("Invalid NIC index %s, valid values"
9354 (nic_op, len(instance.nics) - 1),
9356 old_nic_params = instance.nics[nic_op].nicparams
9357 old_nic_ip = instance.nics[nic_op].ip
9362 update_params_dict = dict([(key, nic_dict[key])
9363 for key in constants.NICS_PARAMETERS
9364 if key in nic_dict])
9366 if 'bridge' in nic_dict:
9367 update_params_dict[constants.NIC_LINK] = nic_dict['bridge']
9369 new_nic_params = _GetUpdatedParams(old_nic_params,
9371 utils.ForceDictType(new_nic_params, constants.NICS_PARAMETER_TYPES)
9372 new_filled_nic_params = cluster.SimpleFillNIC(new_nic_params)
9373 objects.NIC.CheckParameterSyntax(new_filled_nic_params)
9374 self.nic_pinst[nic_op] = new_nic_params
9375 self.nic_pnew[nic_op] = new_filled_nic_params
9376 new_nic_mode = new_filled_nic_params[constants.NIC_MODE]
9378 if new_nic_mode == constants.NIC_MODE_BRIDGED:
9379 nic_bridge = new_filled_nic_params[constants.NIC_LINK]
9380 msg = self.rpc.call_bridges_exist(pnode, [nic_bridge]).fail_msg
9382 msg = "Error checking bridges on node %s: %s" % (pnode, msg)
9384 self.warn.append(msg)
9386 raise errors.OpPrereqError(msg, errors.ECODE_ENVIRON)
9387 if new_nic_mode == constants.NIC_MODE_ROUTED:
9388 if 'ip' in nic_dict:
9389 nic_ip = nic_dict['ip']
9393 raise errors.OpPrereqError('Cannot set the nic ip to None'
9394 ' on a routed nic', errors.ECODE_INVAL)
9395 if 'mac' in nic_dict:
9396 nic_mac = nic_dict['mac']
9398 raise errors.OpPrereqError('Cannot set the nic mac to None',
9400 elif nic_mac in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
9401 # otherwise generate the mac
9402 nic_dict['mac'] = self.cfg.GenerateMAC(self.proc.GetECId())
9404 # or validate/reserve the current one
9406 self.cfg.ReserveMAC(nic_mac, self.proc.GetECId())
9407 except errors.ReservationError:
9408 raise errors.OpPrereqError("MAC address %s already in use"
9409 " in cluster" % nic_mac,
9410 errors.ECODE_NOTUNIQUE)
9413 if self.op.disks and instance.disk_template == constants.DT_DISKLESS:
9414 raise errors.OpPrereqError("Disk operations not supported for"
9415 " diskless instances",
9417 for disk_op, _ in self.op.disks:
9418 if disk_op == constants.DDM_REMOVE:
9419 if len(instance.disks) == 1:
9420 raise errors.OpPrereqError("Cannot remove the last disk of"
9421 " an instance", errors.ECODE_INVAL)
9422 _CheckInstanceDown(self, instance, "cannot remove disks")
9424 if (disk_op == constants.DDM_ADD and
9425 len(instance.disks) >= constants.MAX_DISKS):
9426 raise errors.OpPrereqError("Instance has too many disks (%d), cannot"
9427 " add more" % constants.MAX_DISKS,
9429 if disk_op not in (constants.DDM_ADD, constants.DDM_REMOVE):
9431 if disk_op < 0 or disk_op >= len(instance.disks):
9432 raise errors.OpPrereqError("Invalid disk index %s, valid values"
9434 (disk_op, len(instance.disks)),
9439 def _ConvertPlainToDrbd(self, feedback_fn):
9440 """Converts an instance from plain to drbd.
9443 feedback_fn("Converting template to drbd")
9444 instance = self.instance
9445 pnode = instance.primary_node
9446 snode = self.op.remote_node
9448 # create a fake disk info for _GenerateDiskTemplate
9449 disk_info = [{"size": d.size, "mode": d.mode} for d in instance.disks]
9450 new_disks = _GenerateDiskTemplate(self, self.op.disk_template,
9451 instance.name, pnode, [snode],
9452 disk_info, None, None, 0, feedback_fn)
9453 info = _GetInstanceInfoText(instance)
9454 feedback_fn("Creating aditional volumes...")
9455 # first, create the missing data and meta devices
9456 for disk in new_disks:
9457 # unfortunately this is... not too nice
9458 _CreateSingleBlockDev(self, pnode, instance, disk.children[1],
9460 for child in disk.children:
9461 _CreateSingleBlockDev(self, snode, instance, child, info, True)
9462 # at this stage, all new LVs have been created, we can rename the
9464 feedback_fn("Renaming original volumes...")
9465 rename_list = [(o, n.children[0].logical_id)
9466 for (o, n) in zip(instance.disks, new_disks)]
9467 result = self.rpc.call_blockdev_rename(pnode, rename_list)
9468 result.Raise("Failed to rename original LVs")
9470 feedback_fn("Initializing DRBD devices...")
9471 # all child devices are in place, we can now create the DRBD devices
9472 for disk in new_disks:
9473 for node in [pnode, snode]:
9474 f_create = node == pnode
9475 _CreateSingleBlockDev(self, node, instance, disk, info, f_create)
9477 # at this point, the instance has been modified
9478 instance.disk_template = constants.DT_DRBD8
9479 instance.disks = new_disks
9480 self.cfg.Update(instance, feedback_fn)
9482 # disks are created, waiting for sync
9483 disk_abort = not _WaitForSync(self, instance)
9485 raise errors.OpExecError("There are some degraded disks for"
9486 " this instance, please cleanup manually")
9488 def _ConvertDrbdToPlain(self, feedback_fn):
9489 """Converts an instance from drbd to plain.
9492 instance = self.instance
9493 assert len(instance.secondary_nodes) == 1
9494 pnode = instance.primary_node
9495 snode = instance.secondary_nodes[0]
9496 feedback_fn("Converting template to plain")
9498 old_disks = instance.disks
9499 new_disks = [d.children[0] for d in old_disks]
9501 # copy over size and mode
9502 for parent, child in zip(old_disks, new_disks):
9503 child.size = parent.size
9504 child.mode = parent.mode
9506 # update instance structure
9507 instance.disks = new_disks
9508 instance.disk_template = constants.DT_PLAIN
9509 self.cfg.Update(instance, feedback_fn)
9511 feedback_fn("Removing volumes on the secondary node...")
9512 for disk in old_disks:
9513 self.cfg.SetDiskID(disk, snode)
9514 msg = self.rpc.call_blockdev_remove(snode, disk).fail_msg
9516 self.LogWarning("Could not remove block device %s on node %s,"
9517 " continuing anyway: %s", disk.iv_name, snode, msg)
9519 feedback_fn("Removing unneeded volumes on the primary node...")
9520 for idx, disk in enumerate(old_disks):
9521 meta = disk.children[1]
9522 self.cfg.SetDiskID(meta, pnode)
9523 msg = self.rpc.call_blockdev_remove(pnode, meta).fail_msg
9525 self.LogWarning("Could not remove metadata for disk %d on node %s,"
9526 " continuing anyway: %s", idx, pnode, msg)
9528 def Exec(self, feedback_fn):
9529 """Modifies an instance.
9531 All parameters take effect only at the next restart of the instance.
9534 # Process here the warnings from CheckPrereq, as we don't have a
9535 # feedback_fn there.
9536 for warn in self.warn:
9537 feedback_fn("WARNING: %s" % warn)
9540 instance = self.instance
9542 for disk_op, disk_dict in self.op.disks:
9543 if disk_op == constants.DDM_REMOVE:
9544 # remove the last disk
9545 device = instance.disks.pop()
9546 device_idx = len(instance.disks)
9547 for node, disk in device.ComputeNodeTree(instance.primary_node):
9548 self.cfg.SetDiskID(disk, node)
9549 msg = self.rpc.call_blockdev_remove(node, disk).fail_msg
9551 self.LogWarning("Could not remove disk/%d on node %s: %s,"
9552 " continuing anyway", device_idx, node, msg)
9553 result.append(("disk/%d" % device_idx, "remove"))
9554 elif disk_op == constants.DDM_ADD:
9556 if instance.disk_template == constants.DT_FILE:
9557 file_driver, file_path = instance.disks[0].logical_id
9558 file_path = os.path.dirname(file_path)
9560 file_driver = file_path = None
9561 disk_idx_base = len(instance.disks)
9562 new_disk = _GenerateDiskTemplate(self,
9563 instance.disk_template,
9564 instance.name, instance.primary_node,
9565 instance.secondary_nodes,
9569 disk_idx_base, feedback_fn)[0]
9570 instance.disks.append(new_disk)
9571 info = _GetInstanceInfoText(instance)
9573 logging.info("Creating volume %s for instance %s",
9574 new_disk.iv_name, instance.name)
9575 # Note: this needs to be kept in sync with _CreateDisks
9577 for node in instance.all_nodes:
9578 f_create = node == instance.primary_node
9580 _CreateBlockDev(self, node, instance, new_disk,
9581 f_create, info, f_create)
9582 except errors.OpExecError, err:
9583 self.LogWarning("Failed to create volume %s (%s) on"
9585 new_disk.iv_name, new_disk, node, err)
9586 result.append(("disk/%d" % disk_idx_base, "add:size=%s,mode=%s" %
9587 (new_disk.size, new_disk.mode)))
9589 # change a given disk
9590 instance.disks[disk_op].mode = disk_dict['mode']
9591 result.append(("disk.mode/%d" % disk_op, disk_dict['mode']))
9593 if self.op.disk_template:
9594 r_shut = _ShutdownInstanceDisks(self, instance)
9596 raise errors.OpExecError("Cannot shutdown instance disks, unable to"
9597 " proceed with disk template conversion")
9598 mode = (instance.disk_template, self.op.disk_template)
9600 self._DISK_CONVERSIONS[mode](self, feedback_fn)
9602 self.cfg.ReleaseDRBDMinors(instance.name)
9604 result.append(("disk_template", self.op.disk_template))
9607 for nic_op, nic_dict in self.op.nics:
9608 if nic_op == constants.DDM_REMOVE:
9609 # remove the last nic
9610 del instance.nics[-1]
9611 result.append(("nic.%d" % len(instance.nics), "remove"))
9612 elif nic_op == constants.DDM_ADD:
9613 # mac and bridge should be set, by now
9614 mac = nic_dict['mac']
9615 ip = nic_dict.get('ip', None)
9616 nicparams = self.nic_pinst[constants.DDM_ADD]
9617 new_nic = objects.NIC(mac=mac, ip=ip, nicparams=nicparams)
9618 instance.nics.append(new_nic)
9619 result.append(("nic.%d" % (len(instance.nics) - 1),
9620 "add:mac=%s,ip=%s,mode=%s,link=%s" %
9621 (new_nic.mac, new_nic.ip,
9622 self.nic_pnew[constants.DDM_ADD][constants.NIC_MODE],
9623 self.nic_pnew[constants.DDM_ADD][constants.NIC_LINK]
9626 for key in 'mac', 'ip':
9628 setattr(instance.nics[nic_op], key, nic_dict[key])
9629 if nic_op in self.nic_pinst:
9630 instance.nics[nic_op].nicparams = self.nic_pinst[nic_op]
9631 for key, val in nic_dict.iteritems():
9632 result.append(("nic.%s/%d" % (key, nic_op), val))
9635 if self.op.hvparams:
9636 instance.hvparams = self.hv_inst
9637 for key, val in self.op.hvparams.iteritems():
9638 result.append(("hv/%s" % key, val))
9641 if self.op.beparams:
9642 instance.beparams = self.be_inst
9643 for key, val in self.op.beparams.iteritems():
9644 result.append(("be/%s" % key, val))
9648 instance.os = self.op.os_name
9651 if self.op.osparams:
9652 instance.osparams = self.os_inst
9653 for key, val in self.op.osparams.iteritems():
9654 result.append(("os/%s" % key, val))
9656 self.cfg.Update(instance, feedback_fn)
9660 _DISK_CONVERSIONS = {
9661 (constants.DT_PLAIN, constants.DT_DRBD8): _ConvertPlainToDrbd,
9662 (constants.DT_DRBD8, constants.DT_PLAIN): _ConvertDrbdToPlain,
9666 class LUBackupQuery(NoHooksLU):
9667 """Query the exports list
9672 def ExpandNames(self):
9673 self.needed_locks = {}
9674 self.share_locks[locking.LEVEL_NODE] = 1
9675 if not self.op.nodes:
9676 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
9678 self.needed_locks[locking.LEVEL_NODE] = \
9679 _GetWantedNodes(self, self.op.nodes)
9681 def Exec(self, feedback_fn):
9682 """Compute the list of all the exported system images.
9685 @return: a dictionary with the structure node->(export-list)
9686 where export-list is a list of the instances exported on
9690 self.nodes = self.acquired_locks[locking.LEVEL_NODE]
9691 rpcresult = self.rpc.call_export_list(self.nodes)
9693 for node in rpcresult:
9694 if rpcresult[node].fail_msg:
9695 result[node] = False
9697 result[node] = rpcresult[node].payload
9702 class LUBackupPrepare(NoHooksLU):
9703 """Prepares an instance for an export and returns useful information.
9708 def ExpandNames(self):
9709 self._ExpandAndLockInstance()
9711 def CheckPrereq(self):
9712 """Check prerequisites.
9715 instance_name = self.op.instance_name
9717 self.instance = self.cfg.GetInstanceInfo(instance_name)
9718 assert self.instance is not None, \
9719 "Cannot retrieve locked instance %s" % self.op.instance_name
9720 _CheckNodeOnline(self, self.instance.primary_node)
9722 self._cds = _GetClusterDomainSecret()
9724 def Exec(self, feedback_fn):
9725 """Prepares an instance for an export.
9728 instance = self.instance
9730 if self.op.mode == constants.EXPORT_MODE_REMOTE:
9731 salt = utils.GenerateSecret(8)
9733 feedback_fn("Generating X509 certificate on %s" % instance.primary_node)
9734 result = self.rpc.call_x509_cert_create(instance.primary_node,
9735 constants.RIE_CERT_VALIDITY)
9736 result.Raise("Can't create X509 key and certificate on %s" % result.node)
9738 (name, cert_pem) = result.payload
9740 cert = OpenSSL.crypto.load_certificate(OpenSSL.crypto.FILETYPE_PEM,
9744 "handshake": masterd.instance.ComputeRemoteExportHandshake(self._cds),
9745 "x509_key_name": (name, utils.Sha1Hmac(self._cds, name, salt=salt),
9747 "x509_ca": utils.SignX509Certificate(cert, self._cds, salt),
9753 class LUBackupExport(LogicalUnit):
9754 """Export an instance to an image in the cluster.
9757 HPATH = "instance-export"
9758 HTYPE = constants.HTYPE_INSTANCE
9761 def CheckArguments(self):
9762 """Check the arguments.
9765 self.x509_key_name = self.op.x509_key_name
9766 self.dest_x509_ca_pem = self.op.destination_x509_ca
9768 if self.op.mode == constants.EXPORT_MODE_REMOTE:
9769 if not self.x509_key_name:
9770 raise errors.OpPrereqError("Missing X509 key name for encryption",
9773 if not self.dest_x509_ca_pem:
9774 raise errors.OpPrereqError("Missing destination X509 CA",
9777 def ExpandNames(self):
9778 self._ExpandAndLockInstance()
9780 # Lock all nodes for local exports
9781 if self.op.mode == constants.EXPORT_MODE_LOCAL:
9782 # FIXME: lock only instance primary and destination node
9784 # Sad but true, for now we have do lock all nodes, as we don't know where
9785 # the previous export might be, and in this LU we search for it and
9786 # remove it from its current node. In the future we could fix this by:
9787 # - making a tasklet to search (share-lock all), then create the
9788 # new one, then one to remove, after
9789 # - removing the removal operation altogether
9790 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
9792 def DeclareLocks(self, level):
9793 """Last minute lock declaration."""
9794 # All nodes are locked anyway, so nothing to do here.
9796 def BuildHooksEnv(self):
9799 This will run on the master, primary node and target node.
9803 "EXPORT_MODE": self.op.mode,
9804 "EXPORT_NODE": self.op.target_node,
9805 "EXPORT_DO_SHUTDOWN": self.op.shutdown,
9806 "SHUTDOWN_TIMEOUT": self.op.shutdown_timeout,
9807 # TODO: Generic function for boolean env variables
9808 "REMOVE_INSTANCE": str(bool(self.op.remove_instance)),
9811 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
9813 nl = [self.cfg.GetMasterNode(), self.instance.primary_node]
9815 if self.op.mode == constants.EXPORT_MODE_LOCAL:
9816 nl.append(self.op.target_node)
9820 def CheckPrereq(self):
9821 """Check prerequisites.
9823 This checks that the instance and node names are valid.
9826 instance_name = self.op.instance_name
9828 self.instance = self.cfg.GetInstanceInfo(instance_name)
9829 assert self.instance is not None, \
9830 "Cannot retrieve locked instance %s" % self.op.instance_name
9831 _CheckNodeOnline(self, self.instance.primary_node)
9833 if (self.op.remove_instance and self.instance.admin_up and
9834 not self.op.shutdown):
9835 raise errors.OpPrereqError("Can not remove instance without shutting it"
9838 if self.op.mode == constants.EXPORT_MODE_LOCAL:
9839 self.op.target_node = _ExpandNodeName(self.cfg, self.op.target_node)
9840 self.dst_node = self.cfg.GetNodeInfo(self.op.target_node)
9841 assert self.dst_node is not None
9843 _CheckNodeOnline(self, self.dst_node.name)
9844 _CheckNodeNotDrained(self, self.dst_node.name)
9847 self.dest_disk_info = None
9848 self.dest_x509_ca = None
9850 elif self.op.mode == constants.EXPORT_MODE_REMOTE:
9851 self.dst_node = None
9853 if len(self.op.target_node) != len(self.instance.disks):
9854 raise errors.OpPrereqError(("Received destination information for %s"
9855 " disks, but instance %s has %s disks") %
9856 (len(self.op.target_node), instance_name,
9857 len(self.instance.disks)),
9860 cds = _GetClusterDomainSecret()
9862 # Check X509 key name
9864 (key_name, hmac_digest, hmac_salt) = self.x509_key_name
9865 except (TypeError, ValueError), err:
9866 raise errors.OpPrereqError("Invalid data for X509 key name: %s" % err)
9868 if not utils.VerifySha1Hmac(cds, key_name, hmac_digest, salt=hmac_salt):
9869 raise errors.OpPrereqError("HMAC for X509 key name is wrong",
9872 # Load and verify CA
9874 (cert, _) = utils.LoadSignedX509Certificate(self.dest_x509_ca_pem, cds)
9875 except OpenSSL.crypto.Error, err:
9876 raise errors.OpPrereqError("Unable to load destination X509 CA (%s)" %
9877 (err, ), errors.ECODE_INVAL)
9879 (errcode, msg) = utils.VerifyX509Certificate(cert, None, None)
9880 if errcode is not None:
9881 raise errors.OpPrereqError("Invalid destination X509 CA (%s)" %
9882 (msg, ), errors.ECODE_INVAL)
9884 self.dest_x509_ca = cert
9886 # Verify target information
9888 for idx, disk_data in enumerate(self.op.target_node):
9890 (host, port, magic) = \
9891 masterd.instance.CheckRemoteExportDiskInfo(cds, idx, disk_data)
9892 except errors.GenericError, err:
9893 raise errors.OpPrereqError("Target info for disk %s: %s" %
9894 (idx, err), errors.ECODE_INVAL)
9896 disk_info.append((host, port, magic))
9898 assert len(disk_info) == len(self.op.target_node)
9899 self.dest_disk_info = disk_info
9902 raise errors.ProgrammerError("Unhandled export mode %r" %
9905 # instance disk type verification
9906 # TODO: Implement export support for file-based disks
9907 for disk in self.instance.disks:
9908 if disk.dev_type == constants.LD_FILE:
9909 raise errors.OpPrereqError("Export not supported for instances with"
9910 " file-based disks", errors.ECODE_INVAL)
9912 def _CleanupExports(self, feedback_fn):
9913 """Removes exports of current instance from all other nodes.
9915 If an instance in a cluster with nodes A..D was exported to node C, its
9916 exports will be removed from the nodes A, B and D.
9919 assert self.op.mode != constants.EXPORT_MODE_REMOTE
9921 nodelist = self.cfg.GetNodeList()
9922 nodelist.remove(self.dst_node.name)
9924 # on one-node clusters nodelist will be empty after the removal
9925 # if we proceed the backup would be removed because OpBackupQuery
9926 # substitutes an empty list with the full cluster node list.
9927 iname = self.instance.name
9929 feedback_fn("Removing old exports for instance %s" % iname)
9930 exportlist = self.rpc.call_export_list(nodelist)
9931 for node in exportlist:
9932 if exportlist[node].fail_msg:
9934 if iname in exportlist[node].payload:
9935 msg = self.rpc.call_export_remove(node, iname).fail_msg
9937 self.LogWarning("Could not remove older export for instance %s"
9938 " on node %s: %s", iname, node, msg)
9940 def Exec(self, feedback_fn):
9941 """Export an instance to an image in the cluster.
9944 assert self.op.mode in constants.EXPORT_MODES
9946 instance = self.instance
9947 src_node = instance.primary_node
9949 if self.op.shutdown:
9950 # shutdown the instance, but not the disks
9951 feedback_fn("Shutting down instance %s" % instance.name)
9952 result = self.rpc.call_instance_shutdown(src_node, instance,
9953 self.op.shutdown_timeout)
9954 # TODO: Maybe ignore failures if ignore_remove_failures is set
9955 result.Raise("Could not shutdown instance %s on"
9956 " node %s" % (instance.name, src_node))
9958 # set the disks ID correctly since call_instance_start needs the
9959 # correct drbd minor to create the symlinks
9960 for disk in instance.disks:
9961 self.cfg.SetDiskID(disk, src_node)
9963 activate_disks = (not instance.admin_up)
9966 # Activate the instance disks if we'exporting a stopped instance
9967 feedback_fn("Activating disks for %s" % instance.name)
9968 _StartInstanceDisks(self, instance, None)
9971 helper = masterd.instance.ExportInstanceHelper(self, feedback_fn,
9974 helper.CreateSnapshots()
9976 if (self.op.shutdown and instance.admin_up and
9977 not self.op.remove_instance):
9978 assert not activate_disks
9979 feedback_fn("Starting instance %s" % instance.name)
9980 result = self.rpc.call_instance_start(src_node, instance, None, None)
9981 msg = result.fail_msg
9983 feedback_fn("Failed to start instance: %s" % msg)
9984 _ShutdownInstanceDisks(self, instance)
9985 raise errors.OpExecError("Could not start instance: %s" % msg)
9987 if self.op.mode == constants.EXPORT_MODE_LOCAL:
9988 (fin_resu, dresults) = helper.LocalExport(self.dst_node)
9989 elif self.op.mode == constants.EXPORT_MODE_REMOTE:
9990 connect_timeout = constants.RIE_CONNECT_TIMEOUT
9991 timeouts = masterd.instance.ImportExportTimeouts(connect_timeout)
9993 (key_name, _, _) = self.x509_key_name
9996 OpenSSL.crypto.dump_certificate(OpenSSL.crypto.FILETYPE_PEM,
9999 (fin_resu, dresults) = helper.RemoteExport(self.dest_disk_info,
10000 key_name, dest_ca_pem,
10005 # Check for backwards compatibility
10006 assert len(dresults) == len(instance.disks)
10007 assert compat.all(isinstance(i, bool) for i in dresults), \
10008 "Not all results are boolean: %r" % dresults
10012 feedback_fn("Deactivating disks for %s" % instance.name)
10013 _ShutdownInstanceDisks(self, instance)
10015 if not (compat.all(dresults) and fin_resu):
10018 failures.append("export finalization")
10019 if not compat.all(dresults):
10020 fdsk = utils.CommaJoin(idx for (idx, dsk) in enumerate(dresults)
10022 failures.append("disk export: disk(s) %s" % fdsk)
10024 raise errors.OpExecError("Export failed, errors in %s" %
10025 utils.CommaJoin(failures))
10027 # At this point, the export was successful, we can cleanup/finish
10029 # Remove instance if requested
10030 if self.op.remove_instance:
10031 feedback_fn("Removing instance %s" % instance.name)
10032 _RemoveInstance(self, feedback_fn, instance,
10033 self.op.ignore_remove_failures)
10035 if self.op.mode == constants.EXPORT_MODE_LOCAL:
10036 self._CleanupExports(feedback_fn)
10038 return fin_resu, dresults
10041 class LUBackupRemove(NoHooksLU):
10042 """Remove exports related to the named instance.
10047 def ExpandNames(self):
10048 self.needed_locks = {}
10049 # We need all nodes to be locked in order for RemoveExport to work, but we
10050 # don't need to lock the instance itself, as nothing will happen to it (and
10051 # we can remove exports also for a removed instance)
10052 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
10054 def Exec(self, feedback_fn):
10055 """Remove any export.
10058 instance_name = self.cfg.ExpandInstanceName(self.op.instance_name)
10059 # If the instance was not found we'll try with the name that was passed in.
10060 # This will only work if it was an FQDN, though.
10062 if not instance_name:
10064 instance_name = self.op.instance_name
10066 locked_nodes = self.acquired_locks[locking.LEVEL_NODE]
10067 exportlist = self.rpc.call_export_list(locked_nodes)
10069 for node in exportlist:
10070 msg = exportlist[node].fail_msg
10072 self.LogWarning("Failed to query node %s (continuing): %s", node, msg)
10074 if instance_name in exportlist[node].payload:
10076 result = self.rpc.call_export_remove(node, instance_name)
10077 msg = result.fail_msg
10079 logging.error("Could not remove export for instance %s"
10080 " on node %s: %s", instance_name, node, msg)
10082 if fqdn_warn and not found:
10083 feedback_fn("Export not found. If trying to remove an export belonging"
10084 " to a deleted instance please use its Fully Qualified"
10088 class LUGroupAdd(LogicalUnit):
10089 """Logical unit for creating node groups.
10092 HPATH = "group-add"
10093 HTYPE = constants.HTYPE_GROUP
10096 def ExpandNames(self):
10097 # We need the new group's UUID here so that we can create and acquire the
10098 # corresponding lock. Later, in Exec(), we'll indicate to cfg.AddNodeGroup
10099 # that it should not check whether the UUID exists in the configuration.
10100 self.group_uuid = self.cfg.GenerateUniqueID(self.proc.GetECId())
10101 self.needed_locks = {}
10102 self.add_locks[locking.LEVEL_NODEGROUP] = self.group_uuid
10104 def CheckPrereq(self):
10105 """Check prerequisites.
10107 This checks that the given group name is not an existing node group
10112 existing_uuid = self.cfg.LookupNodeGroup(self.op.group_name)
10113 except errors.OpPrereqError:
10116 raise errors.OpPrereqError("Desired group name '%s' already exists as a"
10117 " node group (UUID: %s)" %
10118 (self.op.group_name, existing_uuid),
10119 errors.ECODE_EXISTS)
10121 if self.op.ndparams:
10122 utils.ForceDictType(self.op.ndparams, constants.NDS_PARAMETER_TYPES)
10124 def BuildHooksEnv(self):
10125 """Build hooks env.
10129 "GROUP_NAME": self.op.group_name,
10131 mn = self.cfg.GetMasterNode()
10132 return env, [mn], [mn]
10134 def Exec(self, feedback_fn):
10135 """Add the node group to the cluster.
10138 group_obj = objects.NodeGroup(name=self.op.group_name, members=[],
10139 uuid=self.group_uuid,
10140 alloc_policy=self.op.alloc_policy,
10141 ndparams=self.op.ndparams)
10143 self.cfg.AddNodeGroup(group_obj, self.proc.GetECId(), check_uuid=False)
10144 del self.remove_locks[locking.LEVEL_NODEGROUP]
10147 class LUGroupAssignNodes(NoHooksLU):
10148 """Logical unit for assigning nodes to groups.
10153 def ExpandNames(self):
10154 # These raise errors.OpPrereqError on their own:
10155 self.group_uuid = self.cfg.LookupNodeGroup(self.op.group_name)
10156 self.op.nodes = _GetWantedNodes(self, self.op.nodes)
10158 # We want to lock all the affected nodes and groups. We have readily
10159 # available the list of nodes, and the *destination* group. To gather the
10160 # list of "source" groups, we need to fetch node information.
10161 self.node_data = self.cfg.GetAllNodesInfo()
10162 affected_groups = set(self.node_data[node].group for node in self.op.nodes)
10163 affected_groups.add(self.group_uuid)
10165 self.needed_locks = {
10166 locking.LEVEL_NODEGROUP: list(affected_groups),
10167 locking.LEVEL_NODE: self.op.nodes,
10170 def CheckPrereq(self):
10171 """Check prerequisites.
10174 self.group = self.cfg.GetNodeGroup(self.group_uuid)
10175 instance_data = self.cfg.GetAllInstancesInfo()
10177 if self.group is None:
10178 raise errors.OpExecError("Could not retrieve group '%s' (UUID: %s)" %
10179 (self.op.group_name, self.group_uuid))
10181 (new_splits, previous_splits) = \
10182 self.CheckAssignmentForSplitInstances([(node, self.group_uuid)
10183 for node in self.op.nodes],
10184 self.node_data, instance_data)
10187 fmt_new_splits = utils.CommaJoin(utils.NiceSort(new_splits))
10189 if not self.op.force:
10190 raise errors.OpExecError("The following instances get split by this"
10191 " change and --force was not given: %s" %
10194 self.LogWarning("This operation will split the following instances: %s",
10197 if previous_splits:
10198 self.LogWarning("In addition, these already-split instances continue"
10199 " to be spit across groups: %s",
10200 utils.CommaJoin(utils.NiceSort(previous_splits)))
10202 def Exec(self, feedback_fn):
10203 """Assign nodes to a new group.
10206 for node in self.op.nodes:
10207 self.node_data[node].group = self.group_uuid
10209 self.cfg.Update(self.group, feedback_fn) # Saves all modified nodes.
10212 def CheckAssignmentForSplitInstances(changes, node_data, instance_data):
10213 """Check for split instances after a node assignment.
10215 This method considers a series of node assignments as an atomic operation,
10216 and returns information about split instances after applying the set of
10219 In particular, it returns information about newly split instances, and
10220 instances that were already split, and remain so after the change.
10222 Only instances whose disk template is listed in constants.DTS_NET_MIRROR are
10225 @type changes: list of (node_name, new_group_uuid) pairs.
10226 @param changes: list of node assignments to consider.
10227 @param node_data: a dict with data for all nodes
10228 @param instance_data: a dict with all instances to consider
10229 @rtype: a two-tuple
10230 @return: a list of instances that were previously okay and result split as a
10231 consequence of this change, and a list of instances that were previously
10232 split and this change does not fix.
10235 changed_nodes = dict((node, group) for node, group in changes
10236 if node_data[node].group != group)
10238 all_split_instances = set()
10239 previously_split_instances = set()
10241 def InstanceNodes(instance):
10242 return [instance.primary_node] + list(instance.secondary_nodes)
10244 for inst in instance_data.values():
10245 if inst.disk_template not in constants.DTS_NET_MIRROR:
10248 instance_nodes = InstanceNodes(inst)
10250 if len(set(node_data[node].group for node in instance_nodes)) > 1:
10251 previously_split_instances.add(inst.name)
10253 if len(set(changed_nodes.get(node, node_data[node].group)
10254 for node in instance_nodes)) > 1:
10255 all_split_instances.add(inst.name)
10257 return (list(all_split_instances - previously_split_instances),
10258 list(previously_split_instances & all_split_instances))
10261 class _GroupQuery(_QueryBase):
10262 FIELDS = query.GROUP_FIELDS
10264 def ExpandNames(self, lu):
10265 lu.needed_locks = {}
10267 self._all_groups = lu.cfg.GetAllNodeGroupsInfo()
10268 name_to_uuid = dict((g.name, g.uuid) for g in self._all_groups.values())
10271 self.wanted = [name_to_uuid[name]
10272 for name in utils.NiceSort(name_to_uuid.keys())]
10274 # Accept names to be either names or UUIDs.
10277 all_uuid = frozenset(self._all_groups.keys())
10279 for name in self.names:
10280 if name in all_uuid:
10281 self.wanted.append(name)
10282 elif name in name_to_uuid:
10283 self.wanted.append(name_to_uuid[name])
10285 missing.append(name)
10288 raise errors.OpPrereqError("Some groups do not exist: %s" % missing,
10289 errors.ECODE_NOENT)
10291 def DeclareLocks(self, lu, level):
10294 def _GetQueryData(self, lu):
10295 """Computes the list of node groups and their attributes.
10298 do_nodes = query.GQ_NODE in self.requested_data
10299 do_instances = query.GQ_INST in self.requested_data
10301 group_to_nodes = None
10302 group_to_instances = None
10304 # For GQ_NODE, we need to map group->[nodes], and group->[instances] for
10305 # GQ_INST. The former is attainable with just GetAllNodesInfo(), but for the
10306 # latter GetAllInstancesInfo() is not enough, for we have to go through
10307 # instance->node. Hence, we will need to process nodes even if we only need
10308 # instance information.
10309 if do_nodes or do_instances:
10310 all_nodes = lu.cfg.GetAllNodesInfo()
10311 group_to_nodes = dict((uuid, []) for uuid in self.wanted)
10314 for node in all_nodes.values():
10315 if node.group in group_to_nodes:
10316 group_to_nodes[node.group].append(node.name)
10317 node_to_group[node.name] = node.group
10320 all_instances = lu.cfg.GetAllInstancesInfo()
10321 group_to_instances = dict((uuid, []) for uuid in self.wanted)
10323 for instance in all_instances.values():
10324 node = instance.primary_node
10325 if node in node_to_group:
10326 group_to_instances[node_to_group[node]].append(instance.name)
10329 # Do not pass on node information if it was not requested.
10330 group_to_nodes = None
10332 return query.GroupQueryData([self._all_groups[uuid]
10333 for uuid in self.wanted],
10334 group_to_nodes, group_to_instances)
10337 class LUGroupQuery(NoHooksLU):
10338 """Logical unit for querying node groups.
10343 def CheckArguments(self):
10344 self.gq = _GroupQuery(qlang.MakeSimpleFilter("name", self.op.names),
10345 self.op.output_fields, False)
10347 def ExpandNames(self):
10348 self.gq.ExpandNames(self)
10350 def Exec(self, feedback_fn):
10351 return self.gq.OldStyleQuery(self)
10354 class LUGroupSetParams(LogicalUnit):
10355 """Modifies the parameters of a node group.
10358 HPATH = "group-modify"
10359 HTYPE = constants.HTYPE_GROUP
10362 def CheckArguments(self):
10365 self.op.alloc_policy,
10368 if all_changes.count(None) == len(all_changes):
10369 raise errors.OpPrereqError("Please pass at least one modification",
10370 errors.ECODE_INVAL)
10372 def ExpandNames(self):
10373 # This raises errors.OpPrereqError on its own:
10374 self.group_uuid = self.cfg.LookupNodeGroup(self.op.group_name)
10376 self.needed_locks = {
10377 locking.LEVEL_NODEGROUP: [self.group_uuid],
10380 def CheckPrereq(self):
10381 """Check prerequisites.
10384 self.group = self.cfg.GetNodeGroup(self.group_uuid)
10386 if self.group is None:
10387 raise errors.OpExecError("Could not retrieve group '%s' (UUID: %s)" %
10388 (self.op.group_name, self.group_uuid))
10390 if self.op.ndparams:
10391 new_ndparams = _GetUpdatedParams(self.group.ndparams, self.op.ndparams)
10392 utils.ForceDictType(self.op.ndparams, constants.NDS_PARAMETER_TYPES)
10393 self.new_ndparams = new_ndparams
10395 def BuildHooksEnv(self):
10396 """Build hooks env.
10400 "GROUP_NAME": self.op.group_name,
10401 "NEW_ALLOC_POLICY": self.op.alloc_policy,
10403 mn = self.cfg.GetMasterNode()
10404 return env, [mn], [mn]
10406 def Exec(self, feedback_fn):
10407 """Modifies the node group.
10412 if self.op.ndparams:
10413 self.group.ndparams = self.new_ndparams
10414 result.append(("ndparams", str(self.group.ndparams)))
10416 if self.op.alloc_policy:
10417 self.group.alloc_policy = self.op.alloc_policy
10419 self.cfg.Update(self.group, feedback_fn)
10424 class LUGroupRemove(LogicalUnit):
10425 HPATH = "group-remove"
10426 HTYPE = constants.HTYPE_GROUP
10429 def ExpandNames(self):
10430 # This will raises errors.OpPrereqError on its own:
10431 self.group_uuid = self.cfg.LookupNodeGroup(self.op.group_name)
10432 self.needed_locks = {
10433 locking.LEVEL_NODEGROUP: [self.group_uuid],
10436 def CheckPrereq(self):
10437 """Check prerequisites.
10439 This checks that the given group name exists as a node group, that is
10440 empty (i.e., contains no nodes), and that is not the last group of the
10444 # Verify that the group is empty.
10445 group_nodes = [node.name
10446 for node in self.cfg.GetAllNodesInfo().values()
10447 if node.group == self.group_uuid]
10450 raise errors.OpPrereqError("Group '%s' not empty, has the following"
10452 (self.op.group_name,
10453 utils.CommaJoin(utils.NiceSort(group_nodes))),
10454 errors.ECODE_STATE)
10456 # Verify the cluster would not be left group-less.
10457 if len(self.cfg.GetNodeGroupList()) == 1:
10458 raise errors.OpPrereqError("Group '%s' is the only group,"
10459 " cannot be removed" %
10460 self.op.group_name,
10461 errors.ECODE_STATE)
10463 def BuildHooksEnv(self):
10464 """Build hooks env.
10468 "GROUP_NAME": self.op.group_name,
10470 mn = self.cfg.GetMasterNode()
10471 return env, [mn], [mn]
10473 def Exec(self, feedback_fn):
10474 """Remove the node group.
10478 self.cfg.RemoveNodeGroup(self.group_uuid)
10479 except errors.ConfigurationError:
10480 raise errors.OpExecError("Group '%s' with UUID %s disappeared" %
10481 (self.op.group_name, self.group_uuid))
10483 self.remove_locks[locking.LEVEL_NODEGROUP] = self.group_uuid
10486 class LUGroupRename(LogicalUnit):
10487 HPATH = "group-rename"
10488 HTYPE = constants.HTYPE_GROUP
10491 def ExpandNames(self):
10492 # This raises errors.OpPrereqError on its own:
10493 self.group_uuid = self.cfg.LookupNodeGroup(self.op.group_name)
10495 self.needed_locks = {
10496 locking.LEVEL_NODEGROUP: [self.group_uuid],
10499 def CheckPrereq(self):
10500 """Check prerequisites.
10502 Ensures requested new name is not yet used.
10506 new_name_uuid = self.cfg.LookupNodeGroup(self.op.new_name)
10507 except errors.OpPrereqError:
10510 raise errors.OpPrereqError("Desired new name '%s' clashes with existing"
10511 " node group (UUID: %s)" %
10512 (self.op.new_name, new_name_uuid),
10513 errors.ECODE_EXISTS)
10515 def BuildHooksEnv(self):
10516 """Build hooks env.
10520 "OLD_NAME": self.op.group_name,
10521 "NEW_NAME": self.op.new_name,
10524 mn = self.cfg.GetMasterNode()
10525 all_nodes = self.cfg.GetAllNodesInfo()
10527 all_nodes.pop(mn, None)
10529 for node in all_nodes.values():
10530 if node.group == self.group_uuid:
10531 run_nodes.append(node.name)
10533 return env, run_nodes, run_nodes
10535 def Exec(self, feedback_fn):
10536 """Rename the node group.
10539 group = self.cfg.GetNodeGroup(self.group_uuid)
10542 raise errors.OpExecError("Could not retrieve group '%s' (UUID: %s)" %
10543 (self.op.group_name, self.group_uuid))
10545 group.name = self.op.new_name
10546 self.cfg.Update(group, feedback_fn)
10548 return self.op.new_name
10551 class TagsLU(NoHooksLU): # pylint: disable-msg=W0223
10552 """Generic tags LU.
10554 This is an abstract class which is the parent of all the other tags LUs.
10558 def ExpandNames(self):
10559 self.needed_locks = {}
10560 if self.op.kind == constants.TAG_NODE:
10561 self.op.name = _ExpandNodeName(self.cfg, self.op.name)
10562 self.needed_locks[locking.LEVEL_NODE] = self.op.name
10563 elif self.op.kind == constants.TAG_INSTANCE:
10564 self.op.name = _ExpandInstanceName(self.cfg, self.op.name)
10565 self.needed_locks[locking.LEVEL_INSTANCE] = self.op.name
10567 # FIXME: Acquire BGL for cluster tag operations (as of this writing it's
10568 # not possible to acquire the BGL based on opcode parameters)
10570 def CheckPrereq(self):
10571 """Check prerequisites.
10574 if self.op.kind == constants.TAG_CLUSTER:
10575 self.target = self.cfg.GetClusterInfo()
10576 elif self.op.kind == constants.TAG_NODE:
10577 self.target = self.cfg.GetNodeInfo(self.op.name)
10578 elif self.op.kind == constants.TAG_INSTANCE:
10579 self.target = self.cfg.GetInstanceInfo(self.op.name)
10581 raise errors.OpPrereqError("Wrong tag type requested (%s)" %
10582 str(self.op.kind), errors.ECODE_INVAL)
10585 class LUTagsGet(TagsLU):
10586 """Returns the tags of a given object.
10591 def ExpandNames(self):
10592 TagsLU.ExpandNames(self)
10594 # Share locks as this is only a read operation
10595 self.share_locks = dict.fromkeys(locking.LEVELS, 1)
10597 def Exec(self, feedback_fn):
10598 """Returns the tag list.
10601 return list(self.target.GetTags())
10604 class LUTagsSearch(NoHooksLU):
10605 """Searches the tags for a given pattern.
10610 def ExpandNames(self):
10611 self.needed_locks = {}
10613 def CheckPrereq(self):
10614 """Check prerequisites.
10616 This checks the pattern passed for validity by compiling it.
10620 self.re = re.compile(self.op.pattern)
10621 except re.error, err:
10622 raise errors.OpPrereqError("Invalid search pattern '%s': %s" %
10623 (self.op.pattern, err), errors.ECODE_INVAL)
10625 def Exec(self, feedback_fn):
10626 """Returns the tag list.
10630 tgts = [("/cluster", cfg.GetClusterInfo())]
10631 ilist = cfg.GetAllInstancesInfo().values()
10632 tgts.extend([("/instances/%s" % i.name, i) for i in ilist])
10633 nlist = cfg.GetAllNodesInfo().values()
10634 tgts.extend([("/nodes/%s" % n.name, n) for n in nlist])
10636 for path, target in tgts:
10637 for tag in target.GetTags():
10638 if self.re.search(tag):
10639 results.append((path, tag))
10643 class LUTagsSet(TagsLU):
10644 """Sets a tag on a given object.
10649 def CheckPrereq(self):
10650 """Check prerequisites.
10652 This checks the type and length of the tag name and value.
10655 TagsLU.CheckPrereq(self)
10656 for tag in self.op.tags:
10657 objects.TaggableObject.ValidateTag(tag)
10659 def Exec(self, feedback_fn):
10664 for tag in self.op.tags:
10665 self.target.AddTag(tag)
10666 except errors.TagError, err:
10667 raise errors.OpExecError("Error while setting tag: %s" % str(err))
10668 self.cfg.Update(self.target, feedback_fn)
10671 class LUTagsDel(TagsLU):
10672 """Delete a list of tags from a given object.
10677 def CheckPrereq(self):
10678 """Check prerequisites.
10680 This checks that we have the given tag.
10683 TagsLU.CheckPrereq(self)
10684 for tag in self.op.tags:
10685 objects.TaggableObject.ValidateTag(tag)
10686 del_tags = frozenset(self.op.tags)
10687 cur_tags = self.target.GetTags()
10689 diff_tags = del_tags - cur_tags
10691 diff_names = ("'%s'" % i for i in sorted(diff_tags))
10692 raise errors.OpPrereqError("Tag(s) %s not found" %
10693 (utils.CommaJoin(diff_names), ),
10694 errors.ECODE_NOENT)
10696 def Exec(self, feedback_fn):
10697 """Remove the tag from the object.
10700 for tag in self.op.tags:
10701 self.target.RemoveTag(tag)
10702 self.cfg.Update(self.target, feedback_fn)
10705 class LUTestDelay(NoHooksLU):
10706 """Sleep for a specified amount of time.
10708 This LU sleeps on the master and/or nodes for a specified amount of
10714 def ExpandNames(self):
10715 """Expand names and set required locks.
10717 This expands the node list, if any.
10720 self.needed_locks = {}
10721 if self.op.on_nodes:
10722 # _GetWantedNodes can be used here, but is not always appropriate to use
10723 # this way in ExpandNames. Check LogicalUnit.ExpandNames docstring for
10724 # more information.
10725 self.op.on_nodes = _GetWantedNodes(self, self.op.on_nodes)
10726 self.needed_locks[locking.LEVEL_NODE] = self.op.on_nodes
10728 def _TestDelay(self):
10729 """Do the actual sleep.
10732 if self.op.on_master:
10733 if not utils.TestDelay(self.op.duration):
10734 raise errors.OpExecError("Error during master delay test")
10735 if self.op.on_nodes:
10736 result = self.rpc.call_test_delay(self.op.on_nodes, self.op.duration)
10737 for node, node_result in result.items():
10738 node_result.Raise("Failure during rpc call to node %s" % node)
10740 def Exec(self, feedback_fn):
10741 """Execute the test delay opcode, with the wanted repetitions.
10744 if self.op.repeat == 0:
10747 top_value = self.op.repeat - 1
10748 for i in range(self.op.repeat):
10749 self.LogInfo("Test delay iteration %d/%d" % (i, top_value))
10753 class LUTestJqueue(NoHooksLU):
10754 """Utility LU to test some aspects of the job queue.
10759 # Must be lower than default timeout for WaitForJobChange to see whether it
10760 # notices changed jobs
10761 _CLIENT_CONNECT_TIMEOUT = 20.0
10762 _CLIENT_CONFIRM_TIMEOUT = 60.0
10765 def _NotifyUsingSocket(cls, cb, errcls):
10766 """Opens a Unix socket and waits for another program to connect.
10769 @param cb: Callback to send socket name to client
10770 @type errcls: class
10771 @param errcls: Exception class to use for errors
10774 # Using a temporary directory as there's no easy way to create temporary
10775 # sockets without writing a custom loop around tempfile.mktemp and
10777 tmpdir = tempfile.mkdtemp()
10779 tmpsock = utils.PathJoin(tmpdir, "sock")
10781 logging.debug("Creating temporary socket at %s", tmpsock)
10782 sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
10787 # Send details to client
10790 # Wait for client to connect before continuing
10791 sock.settimeout(cls._CLIENT_CONNECT_TIMEOUT)
10793 (conn, _) = sock.accept()
10794 except socket.error, err:
10795 raise errcls("Client didn't connect in time (%s)" % err)
10799 # Remove as soon as client is connected
10800 shutil.rmtree(tmpdir)
10802 # Wait for client to close
10805 # pylint: disable-msg=E1101
10806 # Instance of '_socketobject' has no ... member
10807 conn.settimeout(cls._CLIENT_CONFIRM_TIMEOUT)
10809 except socket.error, err:
10810 raise errcls("Client failed to confirm notification (%s)" % err)
10814 def _SendNotification(self, test, arg, sockname):
10815 """Sends a notification to the client.
10818 @param test: Test name
10819 @param arg: Test argument (depends on test)
10820 @type sockname: string
10821 @param sockname: Socket path
10824 self.Log(constants.ELOG_JQUEUE_TEST, (sockname, test, arg))
10826 def _Notify(self, prereq, test, arg):
10827 """Notifies the client of a test.
10830 @param prereq: Whether this is a prereq-phase test
10832 @param test: Test name
10833 @param arg: Test argument (depends on test)
10837 errcls = errors.OpPrereqError
10839 errcls = errors.OpExecError
10841 return self._NotifyUsingSocket(compat.partial(self._SendNotification,
10845 def CheckArguments(self):
10846 self.checkargs_calls = getattr(self, "checkargs_calls", 0) + 1
10847 self.expandnames_calls = 0
10849 def ExpandNames(self):
10850 checkargs_calls = getattr(self, "checkargs_calls", 0)
10851 if checkargs_calls < 1:
10852 raise errors.ProgrammerError("CheckArguments was not called")
10854 self.expandnames_calls += 1
10856 if self.op.notify_waitlock:
10857 self._Notify(True, constants.JQT_EXPANDNAMES, None)
10859 self.LogInfo("Expanding names")
10861 # Get lock on master node (just to get a lock, not for a particular reason)
10862 self.needed_locks = {
10863 locking.LEVEL_NODE: self.cfg.GetMasterNode(),
10866 def Exec(self, feedback_fn):
10867 if self.expandnames_calls < 1:
10868 raise errors.ProgrammerError("ExpandNames was not called")
10870 if self.op.notify_exec:
10871 self._Notify(False, constants.JQT_EXEC, None)
10873 self.LogInfo("Executing")
10875 if self.op.log_messages:
10876 self._Notify(False, constants.JQT_STARTMSG, len(self.op.log_messages))
10877 for idx, msg in enumerate(self.op.log_messages):
10878 self.LogInfo("Sending log message %s", idx + 1)
10879 feedback_fn(constants.JQT_MSGPREFIX + msg)
10880 # Report how many test messages have been sent
10881 self._Notify(False, constants.JQT_LOGMSG, idx + 1)
10884 raise errors.OpExecError("Opcode failure was requested")
10889 class IAllocator(object):
10890 """IAllocator framework.
10892 An IAllocator instance has three sets of attributes:
10893 - cfg that is needed to query the cluster
10894 - input data (all members of the _KEYS class attribute are required)
10895 - four buffer attributes (in|out_data|text), that represent the
10896 input (to the external script) in text and data structure format,
10897 and the output from it, again in two formats
10898 - the result variables from the script (success, info, nodes) for
10902 # pylint: disable-msg=R0902
10903 # lots of instance attributes
10905 "name", "mem_size", "disks", "disk_template",
10906 "os", "tags", "nics", "vcpus", "hypervisor",
10909 "name", "relocate_from",
10915 def __init__(self, cfg, rpc, mode, **kwargs):
10918 # init buffer variables
10919 self.in_text = self.out_text = self.in_data = self.out_data = None
10920 # init all input fields so that pylint is happy
10922 self.mem_size = self.disks = self.disk_template = None
10923 self.os = self.tags = self.nics = self.vcpus = None
10924 self.hypervisor = None
10925 self.relocate_from = None
10927 self.evac_nodes = None
10929 self.required_nodes = None
10930 # init result fields
10931 self.success = self.info = self.result = None
10932 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
10933 keyset = self._ALLO_KEYS
10934 fn = self._AddNewInstance
10935 elif self.mode == constants.IALLOCATOR_MODE_RELOC:
10936 keyset = self._RELO_KEYS
10937 fn = self._AddRelocateInstance
10938 elif self.mode == constants.IALLOCATOR_MODE_MEVAC:
10939 keyset = self._EVAC_KEYS
10940 fn = self._AddEvacuateNodes
10942 raise errors.ProgrammerError("Unknown mode '%s' passed to the"
10943 " IAllocator" % self.mode)
10945 if key not in keyset:
10946 raise errors.ProgrammerError("Invalid input parameter '%s' to"
10947 " IAllocator" % key)
10948 setattr(self, key, kwargs[key])
10951 if key not in kwargs:
10952 raise errors.ProgrammerError("Missing input parameter '%s' to"
10953 " IAllocator" % key)
10954 self._BuildInputData(fn)
10956 def _ComputeClusterData(self):
10957 """Compute the generic allocator input data.
10959 This is the data that is independent of the actual operation.
10963 cluster_info = cfg.GetClusterInfo()
10966 "version": constants.IALLOCATOR_VERSION,
10967 "cluster_name": cfg.GetClusterName(),
10968 "cluster_tags": list(cluster_info.GetTags()),
10969 "enabled_hypervisors": list(cluster_info.enabled_hypervisors),
10970 # we don't have job IDs
10972 ninfo = cfg.GetAllNodesInfo()
10973 iinfo = cfg.GetAllInstancesInfo().values()
10974 i_list = [(inst, cluster_info.FillBE(inst)) for inst in iinfo]
10977 node_list = [n.name for n in ninfo.values() if n.vm_capable]
10979 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
10980 hypervisor_name = self.hypervisor
10981 elif self.mode == constants.IALLOCATOR_MODE_RELOC:
10982 hypervisor_name = cfg.GetInstanceInfo(self.name).hypervisor
10983 elif self.mode == constants.IALLOCATOR_MODE_MEVAC:
10984 hypervisor_name = cluster_info.enabled_hypervisors[0]
10986 node_data = self.rpc.call_node_info(node_list, cfg.GetVGName(),
10989 self.rpc.call_all_instances_info(node_list,
10990 cluster_info.enabled_hypervisors)
10992 data["nodegroups"] = self._ComputeNodeGroupData(cfg)
10994 config_ndata = self._ComputeBasicNodeData(ninfo)
10995 data["nodes"] = self._ComputeDynamicNodeData(ninfo, node_data, node_iinfo,
10996 i_list, config_ndata)
10997 assert len(data["nodes"]) == len(ninfo), \
10998 "Incomplete node data computed"
11000 data["instances"] = self._ComputeInstanceData(cluster_info, i_list)
11002 self.in_data = data
11005 def _ComputeNodeGroupData(cfg):
11006 """Compute node groups data.
11010 for guuid, gdata in cfg.GetAllNodeGroupsInfo().items():
11012 "name": gdata.name,
11013 "alloc_policy": gdata.alloc_policy,
11018 def _ComputeBasicNodeData(node_cfg):
11019 """Compute global node data.
11022 @returns: a dict of name: (node dict, node config)
11026 for ninfo in node_cfg.values():
11027 # fill in static (config-based) values
11029 "tags": list(ninfo.GetTags()),
11030 "primary_ip": ninfo.primary_ip,
11031 "secondary_ip": ninfo.secondary_ip,
11032 "offline": ninfo.offline,
11033 "drained": ninfo.drained,
11034 "master_candidate": ninfo.master_candidate,
11035 "group": ninfo.group,
11036 "master_capable": ninfo.master_capable,
11037 "vm_capable": ninfo.vm_capable,
11040 node_results[ninfo.name] = pnr
11042 return node_results
11045 def _ComputeDynamicNodeData(node_cfg, node_data, node_iinfo, i_list,
11047 """Compute global node data.
11049 @param node_results: the basic node structures as filled from the config
11052 # make a copy of the current dict
11053 node_results = dict(node_results)
11054 for nname, nresult in node_data.items():
11055 assert nname in node_results, "Missing basic data for node %s" % nname
11056 ninfo = node_cfg[nname]
11058 if not (ninfo.offline or ninfo.drained):
11059 nresult.Raise("Can't get data for node %s" % nname)
11060 node_iinfo[nname].Raise("Can't get node instance info from node %s" %
11062 remote_info = nresult.payload
11064 for attr in ['memory_total', 'memory_free', 'memory_dom0',
11065 'vg_size', 'vg_free', 'cpu_total']:
11066 if attr not in remote_info:
11067 raise errors.OpExecError("Node '%s' didn't return attribute"
11068 " '%s'" % (nname, attr))
11069 if not isinstance(remote_info[attr], int):
11070 raise errors.OpExecError("Node '%s' returned invalid value"
11072 (nname, attr, remote_info[attr]))
11073 # compute memory used by primary instances
11074 i_p_mem = i_p_up_mem = 0
11075 for iinfo, beinfo in i_list:
11076 if iinfo.primary_node == nname:
11077 i_p_mem += beinfo[constants.BE_MEMORY]
11078 if iinfo.name not in node_iinfo[nname].payload:
11081 i_used_mem = int(node_iinfo[nname].payload[iinfo.name]['memory'])
11082 i_mem_diff = beinfo[constants.BE_MEMORY] - i_used_mem
11083 remote_info['memory_free'] -= max(0, i_mem_diff)
11086 i_p_up_mem += beinfo[constants.BE_MEMORY]
11088 # compute memory used by instances
11090 "total_memory": remote_info['memory_total'],
11091 "reserved_memory": remote_info['memory_dom0'],
11092 "free_memory": remote_info['memory_free'],
11093 "total_disk": remote_info['vg_size'],
11094 "free_disk": remote_info['vg_free'],
11095 "total_cpus": remote_info['cpu_total'],
11096 "i_pri_memory": i_p_mem,
11097 "i_pri_up_memory": i_p_up_mem,
11099 pnr_dyn.update(node_results[nname])
11100 node_results[nname] = pnr_dyn
11102 return node_results
11105 def _ComputeInstanceData(cluster_info, i_list):
11106 """Compute global instance data.
11110 for iinfo, beinfo in i_list:
11112 for nic in iinfo.nics:
11113 filled_params = cluster_info.SimpleFillNIC(nic.nicparams)
11114 nic_dict = {"mac": nic.mac,
11116 "mode": filled_params[constants.NIC_MODE],
11117 "link": filled_params[constants.NIC_LINK],
11119 if filled_params[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
11120 nic_dict["bridge"] = filled_params[constants.NIC_LINK]
11121 nic_data.append(nic_dict)
11123 "tags": list(iinfo.GetTags()),
11124 "admin_up": iinfo.admin_up,
11125 "vcpus": beinfo[constants.BE_VCPUS],
11126 "memory": beinfo[constants.BE_MEMORY],
11128 "nodes": [iinfo.primary_node] + list(iinfo.secondary_nodes),
11130 "disks": [{"size": dsk.size, "mode": dsk.mode} for dsk in iinfo.disks],
11131 "disk_template": iinfo.disk_template,
11132 "hypervisor": iinfo.hypervisor,
11134 pir["disk_space_total"] = _ComputeDiskSize(iinfo.disk_template,
11136 instance_data[iinfo.name] = pir
11138 return instance_data
11140 def _AddNewInstance(self):
11141 """Add new instance data to allocator structure.
11143 This in combination with _AllocatorGetClusterData will create the
11144 correct structure needed as input for the allocator.
11146 The checks for the completeness of the opcode must have already been
11150 disk_space = _ComputeDiskSize(self.disk_template, self.disks)
11152 if self.disk_template in constants.DTS_NET_MIRROR:
11153 self.required_nodes = 2
11155 self.required_nodes = 1
11158 "disk_template": self.disk_template,
11161 "vcpus": self.vcpus,
11162 "memory": self.mem_size,
11163 "disks": self.disks,
11164 "disk_space_total": disk_space,
11166 "required_nodes": self.required_nodes,
11170 def _AddRelocateInstance(self):
11171 """Add relocate instance data to allocator structure.
11173 This in combination with _IAllocatorGetClusterData will create the
11174 correct structure needed as input for the allocator.
11176 The checks for the completeness of the opcode must have already been
11180 instance = self.cfg.GetInstanceInfo(self.name)
11181 if instance is None:
11182 raise errors.ProgrammerError("Unknown instance '%s' passed to"
11183 " IAllocator" % self.name)
11185 if instance.disk_template not in constants.DTS_NET_MIRROR:
11186 raise errors.OpPrereqError("Can't relocate non-mirrored instances",
11187 errors.ECODE_INVAL)
11189 if len(instance.secondary_nodes) != 1:
11190 raise errors.OpPrereqError("Instance has not exactly one secondary node",
11191 errors.ECODE_STATE)
11193 self.required_nodes = 1
11194 disk_sizes = [{'size': disk.size} for disk in instance.disks]
11195 disk_space = _ComputeDiskSize(instance.disk_template, disk_sizes)
11199 "disk_space_total": disk_space,
11200 "required_nodes": self.required_nodes,
11201 "relocate_from": self.relocate_from,
11205 def _AddEvacuateNodes(self):
11206 """Add evacuate nodes data to allocator structure.
11210 "evac_nodes": self.evac_nodes
11214 def _BuildInputData(self, fn):
11215 """Build input data structures.
11218 self._ComputeClusterData()
11221 request["type"] = self.mode
11222 self.in_data["request"] = request
11224 self.in_text = serializer.Dump(self.in_data)
11226 def Run(self, name, validate=True, call_fn=None):
11227 """Run an instance allocator and return the results.
11230 if call_fn is None:
11231 call_fn = self.rpc.call_iallocator_runner
11233 result = call_fn(self.cfg.GetMasterNode(), name, self.in_text)
11234 result.Raise("Failure while running the iallocator script")
11236 self.out_text = result.payload
11238 self._ValidateResult()
11240 def _ValidateResult(self):
11241 """Process the allocator results.
11243 This will process and if successful save the result in
11244 self.out_data and the other parameters.
11248 rdict = serializer.Load(self.out_text)
11249 except Exception, err:
11250 raise errors.OpExecError("Can't parse iallocator results: %s" % str(err))
11252 if not isinstance(rdict, dict):
11253 raise errors.OpExecError("Can't parse iallocator results: not a dict")
11255 # TODO: remove backwards compatiblity in later versions
11256 if "nodes" in rdict and "result" not in rdict:
11257 rdict["result"] = rdict["nodes"]
11260 for key in "success", "info", "result":
11261 if key not in rdict:
11262 raise errors.OpExecError("Can't parse iallocator results:"
11263 " missing key '%s'" % key)
11264 setattr(self, key, rdict[key])
11266 if not isinstance(rdict["result"], list):
11267 raise errors.OpExecError("Can't parse iallocator results: 'result' key"
11269 self.out_data = rdict
11272 class LUTestAllocator(NoHooksLU):
11273 """Run allocator tests.
11275 This LU runs the allocator tests
11278 def CheckPrereq(self):
11279 """Check prerequisites.
11281 This checks the opcode parameters depending on the director and mode test.
11284 if self.op.mode == constants.IALLOCATOR_MODE_ALLOC:
11285 for attr in ["mem_size", "disks", "disk_template",
11286 "os", "tags", "nics", "vcpus"]:
11287 if not hasattr(self.op, attr):
11288 raise errors.OpPrereqError("Missing attribute '%s' on opcode input" %
11289 attr, errors.ECODE_INVAL)
11290 iname = self.cfg.ExpandInstanceName(self.op.name)
11291 if iname is not None:
11292 raise errors.OpPrereqError("Instance '%s' already in the cluster" %
11293 iname, errors.ECODE_EXISTS)
11294 if not isinstance(self.op.nics, list):
11295 raise errors.OpPrereqError("Invalid parameter 'nics'",
11296 errors.ECODE_INVAL)
11297 if not isinstance(self.op.disks, list):
11298 raise errors.OpPrereqError("Invalid parameter 'disks'",
11299 errors.ECODE_INVAL)
11300 for row in self.op.disks:
11301 if (not isinstance(row, dict) or
11302 "size" not in row or
11303 not isinstance(row["size"], int) or
11304 "mode" not in row or
11305 row["mode"] not in ['r', 'w']):
11306 raise errors.OpPrereqError("Invalid contents of the 'disks'"
11307 " parameter", errors.ECODE_INVAL)
11308 if self.op.hypervisor is None:
11309 self.op.hypervisor = self.cfg.GetHypervisorType()
11310 elif self.op.mode == constants.IALLOCATOR_MODE_RELOC:
11311 fname = _ExpandInstanceName(self.cfg, self.op.name)
11312 self.op.name = fname
11313 self.relocate_from = self.cfg.GetInstanceInfo(fname).secondary_nodes
11314 elif self.op.mode == constants.IALLOCATOR_MODE_MEVAC:
11315 if not hasattr(self.op, "evac_nodes"):
11316 raise errors.OpPrereqError("Missing attribute 'evac_nodes' on"
11317 " opcode input", errors.ECODE_INVAL)
11319 raise errors.OpPrereqError("Invalid test allocator mode '%s'" %
11320 self.op.mode, errors.ECODE_INVAL)
11322 if self.op.direction == constants.IALLOCATOR_DIR_OUT:
11323 if self.op.allocator is None:
11324 raise errors.OpPrereqError("Missing allocator name",
11325 errors.ECODE_INVAL)
11326 elif self.op.direction != constants.IALLOCATOR_DIR_IN:
11327 raise errors.OpPrereqError("Wrong allocator test '%s'" %
11328 self.op.direction, errors.ECODE_INVAL)
11330 def Exec(self, feedback_fn):
11331 """Run the allocator test.
11334 if self.op.mode == constants.IALLOCATOR_MODE_ALLOC:
11335 ial = IAllocator(self.cfg, self.rpc,
11338 mem_size=self.op.mem_size,
11339 disks=self.op.disks,
11340 disk_template=self.op.disk_template,
11344 vcpus=self.op.vcpus,
11345 hypervisor=self.op.hypervisor,
11347 elif self.op.mode == constants.IALLOCATOR_MODE_RELOC:
11348 ial = IAllocator(self.cfg, self.rpc,
11351 relocate_from=list(self.relocate_from),
11353 elif self.op.mode == constants.IALLOCATOR_MODE_MEVAC:
11354 ial = IAllocator(self.cfg, self.rpc,
11356 evac_nodes=self.op.evac_nodes)
11358 raise errors.ProgrammerError("Uncatched mode %s in"
11359 " LUTestAllocator.Exec", self.op.mode)
11361 if self.op.direction == constants.IALLOCATOR_DIR_IN:
11362 result = ial.in_text
11364 ial.Run(self.op.allocator, validate=False)
11365 result = ial.out_text
11369 #: Query type implementations
11371 constants.QR_INSTANCE: _InstanceQuery,
11372 constants.QR_NODE: _NodeQuery,
11373 constants.QR_GROUP: _GroupQuery,
11377 def _GetQueryImplementation(name):
11378 """Returns the implemtnation for a query type.
11380 @param name: Query type, must be one of L{constants.QR_OP_QUERY}
11384 return _QUERY_IMPL[name]
11386 raise errors.OpPrereqError("Unknown query resource '%s'" % name,
11387 errors.ECODE_INVAL)