4 # Copyright (C) 2006, 2007, 2008 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=W0613,W0201
37 from ganeti import ssh
38 from ganeti import utils
39 from ganeti import errors
40 from ganeti import hypervisor
41 from ganeti import locking
42 from ganeti import constants
43 from ganeti import objects
44 from ganeti import opcodes
45 from ganeti import serializer
46 from ganeti import ssconf
49 class LogicalUnit(object):
50 """Logical Unit base class.
52 Subclasses must follow these rules:
53 - implement ExpandNames
54 - implement CheckPrereq
56 - implement BuildHooksEnv
57 - redefine HPATH and HTYPE
58 - optionally redefine their run requirements:
59 REQ_BGL: the LU needs to hold the Big Ganeti Lock exclusively
61 Note that all commands require root permissions.
69 def __init__(self, processor, op, context, rpc):
70 """Constructor for LogicalUnit.
72 This needs to be overriden in derived classes in order to check op
78 self.cfg = context.cfg
79 self.context = context
81 # Dicts used to declare locking needs to mcpu
82 self.needed_locks = None
83 self.acquired_locks = {}
84 self.share_locks = dict(((i, 0) for i in locking.LEVELS))
86 self.remove_locks = {}
87 # Used to force good behavior when calling helper functions
88 self.recalculate_locks = {}
91 self.LogWarning = processor.LogWarning
92 self.LogInfo = processor.LogInfo
94 for attr_name in self._OP_REQP:
95 attr_val = getattr(op, attr_name, None)
97 raise errors.OpPrereqError("Required parameter '%s' missing" %
102 """Returns the SshRunner object
106 self.__ssh = ssh.SshRunner(self.cfg.GetClusterName())
109 ssh = property(fget=__GetSSH)
111 def CheckArguments(self):
112 """Check syntactic validity for the opcode arguments.
114 This method is for doing a simple syntactic check and ensure
115 validity of opcode parameters, without any cluster-related
116 checks. While the same can be accomplished in ExpandNames and/or
117 CheckPrereq, doing these separate is better because:
119 - ExpandNames is left as as purely a lock-related function
120 - CheckPrereq is run after we have aquired locks (and possible
123 The function is allowed to change the self.op attribute so that
124 later methods can no longer worry about missing parameters.
129 def ExpandNames(self):
130 """Expand names for this LU.
132 This method is called before starting to execute the opcode, and it should
133 update all the parameters of the opcode to their canonical form (e.g. a
134 short node name must be fully expanded after this method has successfully
135 completed). This way locking, hooks, logging, ecc. can work correctly.
137 LUs which implement this method must also populate the self.needed_locks
138 member, as a dict with lock levels as keys, and a list of needed lock names
141 - use an empty dict if you don't need any lock
142 - if you don't need any lock at a particular level omit that level
143 - don't put anything for the BGL level
144 - if you want all locks at a level use locking.ALL_SET as a value
146 If you need to share locks (rather than acquire them exclusively) at one
147 level you can modify self.share_locks, setting a true value (usually 1) for
148 that level. By default locks are not shared.
152 # Acquire all nodes and one instance
153 self.needed_locks = {
154 locking.LEVEL_NODE: locking.ALL_SET,
155 locking.LEVEL_INSTANCE: ['instance1.example.tld'],
157 # Acquire just two nodes
158 self.needed_locks = {
159 locking.LEVEL_NODE: ['node1.example.tld', 'node2.example.tld'],
162 self.needed_locks = {} # No, you can't leave it to the default value None
165 # The implementation of this method is mandatory only if the new LU is
166 # concurrent, so that old LUs don't need to be changed all at the same
169 self.needed_locks = {} # Exclusive LUs don't need locks.
171 raise NotImplementedError
173 def DeclareLocks(self, level):
174 """Declare LU locking needs for a level
176 While most LUs can just declare their locking needs at ExpandNames time,
177 sometimes there's the need to calculate some locks after having acquired
178 the ones before. This function is called just before acquiring locks at a
179 particular level, but after acquiring the ones at lower levels, and permits
180 such calculations. It can be used to modify self.needed_locks, and by
181 default it does nothing.
183 This function is only called if you have something already set in
184 self.needed_locks for the level.
186 @param level: Locking level which is going to be locked
187 @type level: member of ganeti.locking.LEVELS
191 def CheckPrereq(self):
192 """Check prerequisites for this LU.
194 This method should check that the prerequisites for the execution
195 of this LU are fulfilled. It can do internode communication, but
196 it should be idempotent - no cluster or system changes are
199 The method should raise errors.OpPrereqError in case something is
200 not fulfilled. Its return value is ignored.
202 This method should also update all the parameters of the opcode to
203 their canonical form if it hasn't been done by ExpandNames before.
206 raise NotImplementedError
208 def Exec(self, feedback_fn):
211 This method should implement the actual work. It should raise
212 errors.OpExecError for failures that are somewhat dealt with in
216 raise NotImplementedError
218 def BuildHooksEnv(self):
219 """Build hooks environment for this LU.
221 This method should return a three-node tuple consisting of: a dict
222 containing the environment that will be used for running the
223 specific hook for this LU, a list of node names on which the hook
224 should run before the execution, and a list of node names on which
225 the hook should run after the execution.
227 The keys of the dict must not have 'GANETI_' prefixed as this will
228 be handled in the hooks runner. Also note additional keys will be
229 added by the hooks runner. If the LU doesn't define any
230 environment, an empty dict (and not None) should be returned.
232 No nodes should be returned as an empty list (and not None).
234 Note that if the HPATH for a LU class is None, this function will
238 raise NotImplementedError
240 def HooksCallBack(self, phase, hook_results, feedback_fn, lu_result):
241 """Notify the LU about the results of its hooks.
243 This method is called every time a hooks phase is executed, and notifies
244 the Logical Unit about the hooks' result. The LU can then use it to alter
245 its result based on the hooks. By default the method does nothing and the
246 previous result is passed back unchanged but any LU can define it if it
247 wants to use the local cluster hook-scripts somehow.
249 @param phase: one of L{constants.HOOKS_PHASE_POST} or
250 L{constants.HOOKS_PHASE_PRE}; it denotes the hooks phase
251 @param hook_results: the results of the multi-node hooks rpc call
252 @param feedback_fn: function used send feedback back to the caller
253 @param lu_result: the previous Exec result this LU had, or None
255 @return: the new Exec result, based on the previous result
261 def _ExpandAndLockInstance(self):
262 """Helper function to expand and lock an instance.
264 Many LUs that work on an instance take its name in self.op.instance_name
265 and need to expand it and then declare the expanded name for locking. This
266 function does it, and then updates self.op.instance_name to the expanded
267 name. It also initializes needed_locks as a dict, if this hasn't been done
271 if self.needed_locks is None:
272 self.needed_locks = {}
274 assert locking.LEVEL_INSTANCE not in self.needed_locks, \
275 "_ExpandAndLockInstance called with instance-level locks set"
276 expanded_name = self.cfg.ExpandInstanceName(self.op.instance_name)
277 if expanded_name is None:
278 raise errors.OpPrereqError("Instance '%s' not known" %
279 self.op.instance_name)
280 self.needed_locks[locking.LEVEL_INSTANCE] = expanded_name
281 self.op.instance_name = expanded_name
283 def _LockInstancesNodes(self, primary_only=False):
284 """Helper function to declare instances' nodes for locking.
286 This function should be called after locking one or more instances to lock
287 their nodes. Its effect is populating self.needed_locks[locking.LEVEL_NODE]
288 with all primary or secondary nodes for instances already locked and
289 present in self.needed_locks[locking.LEVEL_INSTANCE].
291 It should be called from DeclareLocks, and for safety only works if
292 self.recalculate_locks[locking.LEVEL_NODE] is set.
294 In the future it may grow parameters to just lock some instance's nodes, or
295 to just lock primaries or secondary nodes, if needed.
297 If should be called in DeclareLocks in a way similar to::
299 if level == locking.LEVEL_NODE:
300 self._LockInstancesNodes()
302 @type primary_only: boolean
303 @param primary_only: only lock primary nodes of locked instances
306 assert locking.LEVEL_NODE in self.recalculate_locks, \
307 "_LockInstancesNodes helper function called with no nodes to recalculate"
309 # TODO: check if we're really been called with the instance locks held
311 # For now we'll replace self.needed_locks[locking.LEVEL_NODE], but in the
312 # future we might want to have different behaviors depending on the value
313 # of self.recalculate_locks[locking.LEVEL_NODE]
315 for instance_name in self.acquired_locks[locking.LEVEL_INSTANCE]:
316 instance = self.context.cfg.GetInstanceInfo(instance_name)
317 wanted_nodes.append(instance.primary_node)
319 wanted_nodes.extend(instance.secondary_nodes)
321 if self.recalculate_locks[locking.LEVEL_NODE] == constants.LOCKS_REPLACE:
322 self.needed_locks[locking.LEVEL_NODE] = wanted_nodes
323 elif self.recalculate_locks[locking.LEVEL_NODE] == constants.LOCKS_APPEND:
324 self.needed_locks[locking.LEVEL_NODE].extend(wanted_nodes)
326 del self.recalculate_locks[locking.LEVEL_NODE]
329 class NoHooksLU(LogicalUnit):
330 """Simple LU which runs no hooks.
332 This LU is intended as a parent for other LogicalUnits which will
333 run no hooks, in order to reduce duplicate code.
340 def _GetWantedNodes(lu, nodes):
341 """Returns list of checked and expanded node names.
343 @type lu: L{LogicalUnit}
344 @param lu: the logical unit on whose behalf we execute
346 @param nodes: list of node names or None for all nodes
348 @return: the list of nodes, sorted
349 @raise errors.OpProgrammerError: if the nodes parameter is wrong type
352 if not isinstance(nodes, list):
353 raise errors.OpPrereqError("Invalid argument type 'nodes'")
356 raise errors.ProgrammerError("_GetWantedNodes should only be called with a"
357 " non-empty list of nodes whose name is to be expanded.")
361 node = lu.cfg.ExpandNodeName(name)
363 raise errors.OpPrereqError("No such node name '%s'" % name)
366 return utils.NiceSort(wanted)
369 def _GetWantedInstances(lu, instances):
370 """Returns list of checked and expanded instance names.
372 @type lu: L{LogicalUnit}
373 @param lu: the logical unit on whose behalf we execute
374 @type instances: list
375 @param instances: list of instance names or None for all instances
377 @return: the list of instances, sorted
378 @raise errors.OpPrereqError: if the instances parameter is wrong type
379 @raise errors.OpPrereqError: if any of the passed instances is not found
382 if not isinstance(instances, list):
383 raise errors.OpPrereqError("Invalid argument type 'instances'")
388 for name in instances:
389 instance = lu.cfg.ExpandInstanceName(name)
391 raise errors.OpPrereqError("No such instance name '%s'" % name)
392 wanted.append(instance)
395 wanted = utils.NiceSort(lu.cfg.GetInstanceList())
399 def _CheckOutputFields(static, dynamic, selected):
400 """Checks whether all selected fields are valid.
402 @type static: L{utils.FieldSet}
403 @param static: static fields set
404 @type dynamic: L{utils.FieldSet}
405 @param dynamic: dynamic fields set
412 delta = f.NonMatching(selected)
414 raise errors.OpPrereqError("Unknown output fields selected: %s"
418 def _CheckBooleanOpField(op, name):
419 """Validates boolean opcode parameters.
421 This will ensure that an opcode parameter is either a boolean value,
422 or None (but that it always exists).
425 val = getattr(op, name, None)
426 if not (val is None or isinstance(val, bool)):
427 raise errors.OpPrereqError("Invalid boolean parameter '%s' (%s)" %
429 setattr(op, name, val)
432 def _CheckNodeOnline(lu, node):
433 """Ensure that a given node is online.
435 @param lu: the LU on behalf of which we make the check
436 @param node: the node to check
437 @raise errors.OpPrereqError: if the node is offline
440 if lu.cfg.GetNodeInfo(node).offline:
441 raise errors.OpPrereqError("Can't use offline node %s" % node)
444 def _CheckNodeNotDrained(lu, node):
445 """Ensure that a given node is not drained.
447 @param lu: the LU on behalf of which we make the check
448 @param node: the node to check
449 @raise errors.OpPrereqError: if the node is drained
452 if lu.cfg.GetNodeInfo(node).drained:
453 raise errors.OpPrereqError("Can't use drained node %s" % node)
456 def _BuildInstanceHookEnv(name, primary_node, secondary_nodes, os_type, status,
457 memory, vcpus, nics):
458 """Builds instance related env variables for hooks
460 This builds the hook environment from individual variables.
463 @param name: the name of the instance
464 @type primary_node: string
465 @param primary_node: the name of the instance's primary node
466 @type secondary_nodes: list
467 @param secondary_nodes: list of secondary nodes as strings
468 @type os_type: string
469 @param os_type: the name of the instance's OS
470 @type status: boolean
471 @param status: the should_run status of the instance
473 @param memory: the memory size of the instance
475 @param vcpus: the count of VCPUs the instance has
477 @param nics: list of tuples (ip, bridge, mac) representing
478 the NICs the instance has
480 @return: the hook environment for this instance
489 "INSTANCE_NAME": name,
490 "INSTANCE_PRIMARY": primary_node,
491 "INSTANCE_SECONDARIES": " ".join(secondary_nodes),
492 "INSTANCE_OS_TYPE": os_type,
493 "INSTANCE_STATUS": str_status,
494 "INSTANCE_MEMORY": memory,
495 "INSTANCE_VCPUS": vcpus,
499 nic_count = len(nics)
500 for idx, (ip, bridge, mac) in enumerate(nics):
503 env["INSTANCE_NIC%d_IP" % idx] = ip
504 env["INSTANCE_NIC%d_BRIDGE" % idx] = bridge
505 env["INSTANCE_NIC%d_HWADDR" % idx] = mac
509 env["INSTANCE_NIC_COUNT"] = nic_count
514 def _BuildInstanceHookEnvByObject(lu, instance, override=None):
515 """Builds instance related env variables for hooks from an object.
517 @type lu: L{LogicalUnit}
518 @param lu: the logical unit on whose behalf we execute
519 @type instance: L{objects.Instance}
520 @param instance: the instance for which we should build the
523 @param override: dictionary with key/values that will override
526 @return: the hook environment dictionary
529 bep = lu.cfg.GetClusterInfo().FillBE(instance)
531 'name': instance.name,
532 'primary_node': instance.primary_node,
533 'secondary_nodes': instance.secondary_nodes,
534 'os_type': instance.os,
535 'status': instance.admin_up,
536 'memory': bep[constants.BE_MEMORY],
537 'vcpus': bep[constants.BE_VCPUS],
538 'nics': [(nic.ip, nic.bridge, nic.mac) for nic in instance.nics],
541 args.update(override)
542 return _BuildInstanceHookEnv(**args)
545 def _AdjustCandidatePool(lu):
546 """Adjust the candidate pool after node operations.
549 mod_list = lu.cfg.MaintainCandidatePool()
551 lu.LogInfo("Promoted nodes to master candidate role: %s",
552 ", ".join(node.name for node in mod_list))
553 for name in mod_list:
554 lu.context.ReaddNode(name)
555 mc_now, mc_max = lu.cfg.GetMasterCandidateStats()
557 lu.LogInfo("Note: more nodes are candidates (%d) than desired (%d)" %
561 def _CheckInstanceBridgesExist(lu, instance):
562 """Check that the brigdes needed by an instance exist.
565 # check bridges existance
566 brlist = [nic.bridge for nic in instance.nics]
567 result = lu.rpc.call_bridges_exist(instance.primary_node, brlist)
570 raise errors.OpPrereqError("One or more target bridges %s does not"
571 " exist on destination node '%s'" %
572 (brlist, instance.primary_node))
575 class LUDestroyCluster(NoHooksLU):
576 """Logical unit for destroying the cluster.
581 def CheckPrereq(self):
582 """Check prerequisites.
584 This checks whether the cluster is empty.
586 Any errors are signalled by raising errors.OpPrereqError.
589 master = self.cfg.GetMasterNode()
591 nodelist = self.cfg.GetNodeList()
592 if len(nodelist) != 1 or nodelist[0] != master:
593 raise errors.OpPrereqError("There are still %d node(s) in"
594 " this cluster." % (len(nodelist) - 1))
595 instancelist = self.cfg.GetInstanceList()
597 raise errors.OpPrereqError("There are still %d instance(s) in"
598 " this cluster." % len(instancelist))
600 def Exec(self, feedback_fn):
601 """Destroys the cluster.
604 master = self.cfg.GetMasterNode()
605 result = self.rpc.call_node_stop_master(master, False)
608 raise errors.OpExecError("Could not disable the master role")
609 priv_key, pub_key, _ = ssh.GetUserFiles(constants.GANETI_RUNAS)
610 utils.CreateBackup(priv_key)
611 utils.CreateBackup(pub_key)
615 class LUVerifyCluster(LogicalUnit):
616 """Verifies the cluster status.
619 HPATH = "cluster-verify"
620 HTYPE = constants.HTYPE_CLUSTER
621 _OP_REQP = ["skip_checks"]
624 def ExpandNames(self):
625 self.needed_locks = {
626 locking.LEVEL_NODE: locking.ALL_SET,
627 locking.LEVEL_INSTANCE: locking.ALL_SET,
629 self.share_locks = dict(((i, 1) for i in locking.LEVELS))
631 def _VerifyNode(self, nodeinfo, file_list, local_cksum,
632 node_result, feedback_fn, master_files,
634 """Run multiple tests against a node.
638 - compares ganeti version
639 - checks vg existance and size > 20G
640 - checks config file checksum
641 - checks ssh to other nodes
643 @type nodeinfo: L{objects.Node}
644 @param nodeinfo: the node to check
645 @param file_list: required list of files
646 @param local_cksum: dictionary of local files and their checksums
647 @param node_result: the results from the node
648 @param feedback_fn: function used to accumulate results
649 @param master_files: list of files that only masters should have
650 @param drbd_map: the useddrbd minors for this node, in
651 form of minor: (instance, must_exist) which correspond to instances
652 and their running status
657 # main result, node_result should be a non-empty dict
658 if not node_result or not isinstance(node_result, dict):
659 feedback_fn(" - ERROR: unable to verify node %s." % (node,))
662 # compares ganeti version
663 local_version = constants.PROTOCOL_VERSION
664 remote_version = node_result.get('version', None)
665 if not (remote_version and isinstance(remote_version, (list, tuple)) and
666 len(remote_version) == 2):
667 feedback_fn(" - ERROR: connection to %s failed" % (node))
670 if local_version != remote_version[0]:
671 feedback_fn(" - ERROR: incompatible protocol versions: master %s,"
672 " node %s %s" % (local_version, node, remote_version[0]))
675 # node seems compatible, we can actually try to look into its results
679 # full package version
680 if constants.RELEASE_VERSION != remote_version[1]:
681 feedback_fn(" - WARNING: software version mismatch: master %s,"
683 (constants.RELEASE_VERSION, node, remote_version[1]))
685 # checks vg existence and size > 20G
687 vglist = node_result.get(constants.NV_VGLIST, None)
689 feedback_fn(" - ERROR: unable to check volume groups on node %s." %
693 vgstatus = utils.CheckVolumeGroupSize(vglist, self.cfg.GetVGName(),
694 constants.MIN_VG_SIZE)
696 feedback_fn(" - ERROR: %s on node %s" % (vgstatus, node))
699 # checks config file checksum
701 remote_cksum = node_result.get(constants.NV_FILELIST, None)
702 if not isinstance(remote_cksum, dict):
704 feedback_fn(" - ERROR: node hasn't returned file checksum data")
706 for file_name in file_list:
707 node_is_mc = nodeinfo.master_candidate
708 must_have_file = file_name not in master_files
709 if file_name not in remote_cksum:
710 if node_is_mc or must_have_file:
712 feedback_fn(" - ERROR: file '%s' missing" % file_name)
713 elif remote_cksum[file_name] != local_cksum[file_name]:
714 if node_is_mc or must_have_file:
716 feedback_fn(" - ERROR: file '%s' has wrong checksum" % file_name)
718 # not candidate and this is not a must-have file
720 feedback_fn(" - ERROR: non master-candidate has old/wrong file"
723 # all good, except non-master/non-must have combination
724 if not node_is_mc and not must_have_file:
725 feedback_fn(" - ERROR: file '%s' should not exist on non master"
726 " candidates" % file_name)
730 if constants.NV_NODELIST not in node_result:
732 feedback_fn(" - ERROR: node hasn't returned node ssh connectivity data")
734 if node_result[constants.NV_NODELIST]:
736 for node in node_result[constants.NV_NODELIST]:
737 feedback_fn(" - ERROR: ssh communication with node '%s': %s" %
738 (node, node_result[constants.NV_NODELIST][node]))
740 if constants.NV_NODENETTEST not in node_result:
742 feedback_fn(" - ERROR: node hasn't returned node tcp connectivity data")
744 if node_result[constants.NV_NODENETTEST]:
746 nlist = utils.NiceSort(node_result[constants.NV_NODENETTEST].keys())
748 feedback_fn(" - ERROR: tcp communication with node '%s': %s" %
749 (node, node_result[constants.NV_NODENETTEST][node]))
751 hyp_result = node_result.get(constants.NV_HYPERVISOR, None)
752 if isinstance(hyp_result, dict):
753 for hv_name, hv_result in hyp_result.iteritems():
754 if hv_result is not None:
755 feedback_fn(" - ERROR: hypervisor %s verify failure: '%s'" %
756 (hv_name, hv_result))
758 # check used drbd list
759 used_minors = node_result.get(constants.NV_DRBDLIST, [])
760 for minor, (iname, must_exist) in drbd_map.items():
761 if minor not in used_minors and must_exist:
762 feedback_fn(" - ERROR: drbd minor %d of instance %s is not active" %
765 for minor in used_minors:
766 if minor not in drbd_map:
767 feedback_fn(" - ERROR: unallocated drbd minor %d is in use" % minor)
772 def _VerifyInstance(self, instance, instanceconfig, node_vol_is,
773 node_instance, feedback_fn, n_offline):
774 """Verify an instance.
776 This function checks to see if the required block devices are
777 available on the instance's node.
782 node_current = instanceconfig.primary_node
785 instanceconfig.MapLVsByNode(node_vol_should)
787 for node in node_vol_should:
788 if node in n_offline:
789 # ignore missing volumes on offline nodes
791 for volume in node_vol_should[node]:
792 if node not in node_vol_is or volume not in node_vol_is[node]:
793 feedback_fn(" - ERROR: volume %s missing on node %s" %
797 if instanceconfig.admin_up:
798 if ((node_current not in node_instance or
799 not instance in node_instance[node_current]) and
800 node_current not in n_offline):
801 feedback_fn(" - ERROR: instance %s not running on node %s" %
802 (instance, node_current))
805 for node in node_instance:
806 if (not node == node_current):
807 if instance in node_instance[node]:
808 feedback_fn(" - ERROR: instance %s should not run on node %s" %
814 def _VerifyOrphanVolumes(self, node_vol_should, node_vol_is, feedback_fn):
815 """Verify if there are any unknown volumes in the cluster.
817 The .os, .swap and backup volumes are ignored. All other volumes are
823 for node in node_vol_is:
824 for volume in node_vol_is[node]:
825 if node not in node_vol_should or volume not in node_vol_should[node]:
826 feedback_fn(" - ERROR: volume %s on node %s should not exist" %
831 def _VerifyOrphanInstances(self, instancelist, node_instance, feedback_fn):
832 """Verify the list of running instances.
834 This checks what instances are running but unknown to the cluster.
838 for node in node_instance:
839 for runninginstance in node_instance[node]:
840 if runninginstance not in instancelist:
841 feedback_fn(" - ERROR: instance %s on node %s should not exist" %
842 (runninginstance, node))
846 def _VerifyNPlusOneMemory(self, node_info, instance_cfg, feedback_fn):
847 """Verify N+1 Memory Resilience.
849 Check that if one single node dies we can still start all the instances it
855 for node, nodeinfo in node_info.iteritems():
856 # This code checks that every node which is now listed as secondary has
857 # enough memory to host all instances it is supposed to should a single
858 # other node in the cluster fail.
859 # FIXME: not ready for failover to an arbitrary node
860 # FIXME: does not support file-backed instances
861 # WARNING: we currently take into account down instances as well as up
862 # ones, considering that even if they're down someone might want to start
863 # them even in the event of a node failure.
864 for prinode, instances in nodeinfo['sinst-by-pnode'].iteritems():
866 for instance in instances:
867 bep = self.cfg.GetClusterInfo().FillBE(instance_cfg[instance])
868 if bep[constants.BE_AUTO_BALANCE]:
869 needed_mem += bep[constants.BE_MEMORY]
870 if nodeinfo['mfree'] < needed_mem:
871 feedback_fn(" - ERROR: not enough memory on node %s to accomodate"
872 " failovers should node %s fail" % (node, prinode))
876 def CheckPrereq(self):
877 """Check prerequisites.
879 Transform the list of checks we're going to skip into a set and check that
880 all its members are valid.
883 self.skip_set = frozenset(self.op.skip_checks)
884 if not constants.VERIFY_OPTIONAL_CHECKS.issuperset(self.skip_set):
885 raise errors.OpPrereqError("Invalid checks to be skipped specified")
887 def BuildHooksEnv(self):
890 Cluster-Verify hooks just rone in the post phase and their failure makes
891 the output be logged in the verify output and the verification to fail.
894 all_nodes = self.cfg.GetNodeList()
895 # TODO: populate the environment with useful information for verify hooks
897 return env, [], all_nodes
899 def Exec(self, feedback_fn):
900 """Verify integrity of cluster, performing various test on nodes.
904 feedback_fn("* Verifying global settings")
905 for msg in self.cfg.VerifyConfig():
906 feedback_fn(" - ERROR: %s" % msg)
908 vg_name = self.cfg.GetVGName()
909 hypervisors = self.cfg.GetClusterInfo().enabled_hypervisors
910 nodelist = utils.NiceSort(self.cfg.GetNodeList())
911 nodeinfo = [self.cfg.GetNodeInfo(nname) for nname in nodelist]
912 instancelist = utils.NiceSort(self.cfg.GetInstanceList())
913 instanceinfo = dict((iname, self.cfg.GetInstanceInfo(iname))
914 for iname in instancelist)
915 i_non_redundant = [] # Non redundant instances
916 i_non_a_balanced = [] # Non auto-balanced instances
917 n_offline = [] # List of offline nodes
918 n_drained = [] # List of nodes being drained
924 # FIXME: verify OS list
926 master_files = [constants.CLUSTER_CONF_FILE]
928 file_names = ssconf.SimpleStore().GetFileList()
929 file_names.append(constants.SSL_CERT_FILE)
930 file_names.append(constants.RAPI_CERT_FILE)
931 file_names.extend(master_files)
933 local_checksums = utils.FingerprintFiles(file_names)
935 feedback_fn("* Gathering data (%d nodes)" % len(nodelist))
936 node_verify_param = {
937 constants.NV_FILELIST: file_names,
938 constants.NV_NODELIST: [node.name for node in nodeinfo
939 if not node.offline],
940 constants.NV_HYPERVISOR: hypervisors,
941 constants.NV_NODENETTEST: [(node.name, node.primary_ip,
942 node.secondary_ip) for node in nodeinfo
943 if not node.offline],
944 constants.NV_LVLIST: vg_name,
945 constants.NV_INSTANCELIST: hypervisors,
946 constants.NV_VGLIST: None,
947 constants.NV_VERSION: None,
948 constants.NV_HVINFO: self.cfg.GetHypervisorType(),
949 constants.NV_DRBDLIST: None,
951 all_nvinfo = self.rpc.call_node_verify(nodelist, node_verify_param,
952 self.cfg.GetClusterName())
954 cluster = self.cfg.GetClusterInfo()
955 master_node = self.cfg.GetMasterNode()
956 all_drbd_map = self.cfg.ComputeDRBDMap()
958 for node_i in nodeinfo:
960 nresult = all_nvinfo[node].data
963 feedback_fn("* Skipping offline node %s" % (node,))
964 n_offline.append(node)
967 if node == master_node:
969 elif node_i.master_candidate:
970 ntype = "master candidate"
973 n_drained.append(node)
976 feedback_fn("* Verifying node %s (%s)" % (node, ntype))
978 if all_nvinfo[node].failed or not isinstance(nresult, dict):
979 feedback_fn(" - ERROR: connection to %s failed" % (node,))
984 for minor, instance in all_drbd_map[node].items():
985 instance = instanceinfo[instance]
986 node_drbd[minor] = (instance.name, instance.admin_up)
987 result = self._VerifyNode(node_i, file_names, local_checksums,
988 nresult, feedback_fn, master_files,
992 lvdata = nresult.get(constants.NV_LVLIST, "Missing LV data")
993 if isinstance(lvdata, basestring):
994 feedback_fn(" - ERROR: LVM problem on node %s: %s" %
995 (node, utils.SafeEncode(lvdata)))
997 node_volume[node] = {}
998 elif not isinstance(lvdata, dict):
999 feedback_fn(" - ERROR: connection to %s failed (lvlist)" % (node,))
1003 node_volume[node] = lvdata
1006 idata = nresult.get(constants.NV_INSTANCELIST, None)
1007 if not isinstance(idata, list):
1008 feedback_fn(" - ERROR: connection to %s failed (instancelist)" %
1013 node_instance[node] = idata
1016 nodeinfo = nresult.get(constants.NV_HVINFO, None)
1017 if not isinstance(nodeinfo, dict):
1018 feedback_fn(" - ERROR: connection to %s failed (hvinfo)" % (node,))
1024 "mfree": int(nodeinfo['memory_free']),
1025 "dfree": int(nresult[constants.NV_VGLIST][vg_name]),
1028 # dictionary holding all instances this node is secondary for,
1029 # grouped by their primary node. Each key is a cluster node, and each
1030 # value is a list of instances which have the key as primary and the
1031 # current node as secondary. this is handy to calculate N+1 memory
1032 # availability if you can only failover from a primary to its
1034 "sinst-by-pnode": {},
1037 feedback_fn(" - ERROR: invalid value returned from node %s" % (node,))
1041 node_vol_should = {}
1043 for instance in instancelist:
1044 feedback_fn("* Verifying instance %s" % instance)
1045 inst_config = instanceinfo[instance]
1046 result = self._VerifyInstance(instance, inst_config, node_volume,
1047 node_instance, feedback_fn, n_offline)
1049 inst_nodes_offline = []
1051 inst_config.MapLVsByNode(node_vol_should)
1053 instance_cfg[instance] = inst_config
1055 pnode = inst_config.primary_node
1056 if pnode in node_info:
1057 node_info[pnode]['pinst'].append(instance)
1058 elif pnode not in n_offline:
1059 feedback_fn(" - ERROR: instance %s, connection to primary node"
1060 " %s failed" % (instance, pnode))
1063 if pnode in n_offline:
1064 inst_nodes_offline.append(pnode)
1066 # If the instance is non-redundant we cannot survive losing its primary
1067 # node, so we are not N+1 compliant. On the other hand we have no disk
1068 # templates with more than one secondary so that situation is not well
1070 # FIXME: does not support file-backed instances
1071 if len(inst_config.secondary_nodes) == 0:
1072 i_non_redundant.append(instance)
1073 elif len(inst_config.secondary_nodes) > 1:
1074 feedback_fn(" - WARNING: multiple secondaries for instance %s"
1077 if not cluster.FillBE(inst_config)[constants.BE_AUTO_BALANCE]:
1078 i_non_a_balanced.append(instance)
1080 for snode in inst_config.secondary_nodes:
1081 if snode in node_info:
1082 node_info[snode]['sinst'].append(instance)
1083 if pnode not in node_info[snode]['sinst-by-pnode']:
1084 node_info[snode]['sinst-by-pnode'][pnode] = []
1085 node_info[snode]['sinst-by-pnode'][pnode].append(instance)
1086 elif snode not in n_offline:
1087 feedback_fn(" - ERROR: instance %s, connection to secondary node"
1088 " %s failed" % (instance, snode))
1090 if snode in n_offline:
1091 inst_nodes_offline.append(snode)
1093 if inst_nodes_offline:
1094 # warn that the instance lives on offline nodes, and set bad=True
1095 feedback_fn(" - ERROR: instance lives on offline node(s) %s" %
1096 ", ".join(inst_nodes_offline))
1099 feedback_fn("* Verifying orphan volumes")
1100 result = self._VerifyOrphanVolumes(node_vol_should, node_volume,
1104 feedback_fn("* Verifying remaining instances")
1105 result = self._VerifyOrphanInstances(instancelist, node_instance,
1109 if constants.VERIFY_NPLUSONE_MEM not in self.skip_set:
1110 feedback_fn("* Verifying N+1 Memory redundancy")
1111 result = self._VerifyNPlusOneMemory(node_info, instance_cfg, feedback_fn)
1114 feedback_fn("* Other Notes")
1116 feedback_fn(" - NOTICE: %d non-redundant instance(s) found."
1117 % len(i_non_redundant))
1119 if i_non_a_balanced:
1120 feedback_fn(" - NOTICE: %d non-auto-balanced instance(s) found."
1121 % len(i_non_a_balanced))
1124 feedback_fn(" - NOTICE: %d offline node(s) found." % len(n_offline))
1127 feedback_fn(" - NOTICE: %d drained node(s) found." % len(n_drained))
1131 def HooksCallBack(self, phase, hooks_results, feedback_fn, lu_result):
1132 """Analize the post-hooks' result
1134 This method analyses the hook result, handles it, and sends some
1135 nicely-formatted feedback back to the user.
1137 @param phase: one of L{constants.HOOKS_PHASE_POST} or
1138 L{constants.HOOKS_PHASE_PRE}; it denotes the hooks phase
1139 @param hooks_results: the results of the multi-node hooks rpc call
1140 @param feedback_fn: function used send feedback back to the caller
1141 @param lu_result: previous Exec result
1142 @return: the new Exec result, based on the previous result
1146 # We only really run POST phase hooks, and are only interested in
1148 if phase == constants.HOOKS_PHASE_POST:
1149 # Used to change hooks' output to proper indentation
1150 indent_re = re.compile('^', re.M)
1151 feedback_fn("* Hooks Results")
1152 if not hooks_results:
1153 feedback_fn(" - ERROR: general communication failure")
1156 for node_name in hooks_results:
1157 show_node_header = True
1158 res = hooks_results[node_name]
1159 if res.failed or res.data is False or not isinstance(res.data, list):
1161 # no need to warn or set fail return value
1163 feedback_fn(" Communication failure in hooks execution")
1166 for script, hkr, output in res.data:
1167 if hkr == constants.HKR_FAIL:
1168 # The node header is only shown once, if there are
1169 # failing hooks on that node
1170 if show_node_header:
1171 feedback_fn(" Node %s:" % node_name)
1172 show_node_header = False
1173 feedback_fn(" ERROR: Script %s failed, output:" % script)
1174 output = indent_re.sub(' ', output)
1175 feedback_fn("%s" % output)
1181 class LUVerifyDisks(NoHooksLU):
1182 """Verifies the cluster disks status.
1188 def ExpandNames(self):
1189 self.needed_locks = {
1190 locking.LEVEL_NODE: locking.ALL_SET,
1191 locking.LEVEL_INSTANCE: locking.ALL_SET,
1193 self.share_locks = dict(((i, 1) for i in locking.LEVELS))
1195 def CheckPrereq(self):
1196 """Check prerequisites.
1198 This has no prerequisites.
1203 def Exec(self, feedback_fn):
1204 """Verify integrity of cluster disks.
1207 result = res_nodes, res_nlvm, res_instances, res_missing = [], {}, [], {}
1209 vg_name = self.cfg.GetVGName()
1210 nodes = utils.NiceSort(self.cfg.GetNodeList())
1211 instances = [self.cfg.GetInstanceInfo(name)
1212 for name in self.cfg.GetInstanceList()]
1215 for inst in instances:
1217 if (not inst.admin_up or
1218 inst.disk_template not in constants.DTS_NET_MIRROR):
1220 inst.MapLVsByNode(inst_lvs)
1221 # transform { iname: {node: [vol,],},} to {(node, vol): iname}
1222 for node, vol_list in inst_lvs.iteritems():
1223 for vol in vol_list:
1224 nv_dict[(node, vol)] = inst
1229 node_lvs = self.rpc.call_volume_list(nodes, vg_name)
1234 lvs = node_lvs[node]
1237 self.LogWarning("Connection to node %s failed: %s" %
1241 if isinstance(lvs, basestring):
1242 logging.warning("Error enumerating LVs on node %s: %s", node, lvs)
1243 res_nlvm[node] = lvs
1244 elif not isinstance(lvs, dict):
1245 logging.warning("Connection to node %s failed or invalid data"
1247 res_nodes.append(node)
1250 for lv_name, (_, lv_inactive, lv_online) in lvs.iteritems():
1251 inst = nv_dict.pop((node, lv_name), None)
1252 if (not lv_online and inst is not None
1253 and inst.name not in res_instances):
1254 res_instances.append(inst.name)
1256 # any leftover items in nv_dict are missing LVs, let's arrange the
1258 for key, inst in nv_dict.iteritems():
1259 if inst.name not in res_missing:
1260 res_missing[inst.name] = []
1261 res_missing[inst.name].append(key)
1266 class LURenameCluster(LogicalUnit):
1267 """Rename the cluster.
1270 HPATH = "cluster-rename"
1271 HTYPE = constants.HTYPE_CLUSTER
1274 def BuildHooksEnv(self):
1279 "OP_TARGET": self.cfg.GetClusterName(),
1280 "NEW_NAME": self.op.name,
1282 mn = self.cfg.GetMasterNode()
1283 return env, [mn], [mn]
1285 def CheckPrereq(self):
1286 """Verify that the passed name is a valid one.
1289 hostname = utils.HostInfo(self.op.name)
1291 new_name = hostname.name
1292 self.ip = new_ip = hostname.ip
1293 old_name = self.cfg.GetClusterName()
1294 old_ip = self.cfg.GetMasterIP()
1295 if new_name == old_name and new_ip == old_ip:
1296 raise errors.OpPrereqError("Neither the name nor the IP address of the"
1297 " cluster has changed")
1298 if new_ip != old_ip:
1299 if utils.TcpPing(new_ip, constants.DEFAULT_NODED_PORT):
1300 raise errors.OpPrereqError("The given cluster IP address (%s) is"
1301 " reachable on the network. Aborting." %
1304 self.op.name = new_name
1306 def Exec(self, feedback_fn):
1307 """Rename the cluster.
1310 clustername = self.op.name
1313 # shutdown the master IP
1314 master = self.cfg.GetMasterNode()
1315 result = self.rpc.call_node_stop_master(master, False)
1316 if result.failed or not result.data:
1317 raise errors.OpExecError("Could not disable the master role")
1320 cluster = self.cfg.GetClusterInfo()
1321 cluster.cluster_name = clustername
1322 cluster.master_ip = ip
1323 self.cfg.Update(cluster)
1325 # update the known hosts file
1326 ssh.WriteKnownHostsFile(self.cfg, constants.SSH_KNOWN_HOSTS_FILE)
1327 node_list = self.cfg.GetNodeList()
1329 node_list.remove(master)
1332 result = self.rpc.call_upload_file(node_list,
1333 constants.SSH_KNOWN_HOSTS_FILE)
1334 for to_node, to_result in result.iteritems():
1335 if to_result.failed or not to_result.data:
1336 logging.error("Copy of file %s to node %s failed",
1337 constants.SSH_KNOWN_HOSTS_FILE, to_node)
1340 result = self.rpc.call_node_start_master(master, False)
1341 if result.failed or not result.data:
1342 self.LogWarning("Could not re-enable the master role on"
1343 " the master, please restart manually.")
1346 def _RecursiveCheckIfLVMBased(disk):
1347 """Check if the given disk or its children are lvm-based.
1349 @type disk: L{objects.Disk}
1350 @param disk: the disk to check
1352 @return: boolean indicating whether a LD_LV dev_type was found or not
1356 for chdisk in disk.children:
1357 if _RecursiveCheckIfLVMBased(chdisk):
1359 return disk.dev_type == constants.LD_LV
1362 class LUSetClusterParams(LogicalUnit):
1363 """Change the parameters of the cluster.
1366 HPATH = "cluster-modify"
1367 HTYPE = constants.HTYPE_CLUSTER
1371 def CheckParameters(self):
1375 if not hasattr(self.op, "candidate_pool_size"):
1376 self.op.candidate_pool_size = None
1377 if self.op.candidate_pool_size is not None:
1379 self.op.candidate_pool_size = int(self.op.candidate_pool_size)
1380 except ValueError, err:
1381 raise errors.OpPrereqError("Invalid candidate_pool_size value: %s" %
1383 if self.op.candidate_pool_size < 1:
1384 raise errors.OpPrereqError("At least one master candidate needed")
1386 def ExpandNames(self):
1387 # FIXME: in the future maybe other cluster params won't require checking on
1388 # all nodes to be modified.
1389 self.needed_locks = {
1390 locking.LEVEL_NODE: locking.ALL_SET,
1392 self.share_locks[locking.LEVEL_NODE] = 1
1394 def BuildHooksEnv(self):
1399 "OP_TARGET": self.cfg.GetClusterName(),
1400 "NEW_VG_NAME": self.op.vg_name,
1402 mn = self.cfg.GetMasterNode()
1403 return env, [mn], [mn]
1405 def CheckPrereq(self):
1406 """Check prerequisites.
1408 This checks whether the given params don't conflict and
1409 if the given volume group is valid.
1412 if self.op.vg_name is not None and not self.op.vg_name:
1413 instances = self.cfg.GetAllInstancesInfo().values()
1414 for inst in instances:
1415 for disk in inst.disks:
1416 if _RecursiveCheckIfLVMBased(disk):
1417 raise errors.OpPrereqError("Cannot disable lvm storage while"
1418 " lvm-based instances exist")
1420 node_list = self.acquired_locks[locking.LEVEL_NODE]
1422 # if vg_name not None, checks given volume group on all nodes
1424 vglist = self.rpc.call_vg_list(node_list)
1425 for node in node_list:
1426 if vglist[node].failed:
1427 # ignoring down node
1428 self.LogWarning("Node %s unreachable/error, ignoring" % node)
1430 vgstatus = utils.CheckVolumeGroupSize(vglist[node].data,
1432 constants.MIN_VG_SIZE)
1434 raise errors.OpPrereqError("Error on node '%s': %s" %
1437 self.cluster = cluster = self.cfg.GetClusterInfo()
1438 # validate beparams changes
1439 if self.op.beparams:
1440 utils.ForceDictType(self.op.beparams, constants.BES_PARAMETER_TYPES)
1441 self.new_beparams = cluster.FillDict(
1442 cluster.beparams[constants.BEGR_DEFAULT], self.op.beparams)
1444 # hypervisor list/parameters
1445 self.new_hvparams = cluster.FillDict(cluster.hvparams, {})
1446 if self.op.hvparams:
1447 if not isinstance(self.op.hvparams, dict):
1448 raise errors.OpPrereqError("Invalid 'hvparams' parameter on input")
1449 for hv_name, hv_dict in self.op.hvparams.items():
1450 if hv_name not in self.new_hvparams:
1451 self.new_hvparams[hv_name] = hv_dict
1453 self.new_hvparams[hv_name].update(hv_dict)
1455 if self.op.enabled_hypervisors is not None:
1456 self.hv_list = self.op.enabled_hypervisors
1458 self.hv_list = cluster.enabled_hypervisors
1460 if self.op.hvparams or self.op.enabled_hypervisors is not None:
1461 # either the enabled list has changed, or the parameters have, validate
1462 for hv_name, hv_params in self.new_hvparams.items():
1463 if ((self.op.hvparams and hv_name in self.op.hvparams) or
1464 (self.op.enabled_hypervisors and
1465 hv_name in self.op.enabled_hypervisors)):
1466 # either this is a new hypervisor, or its parameters have changed
1467 hv_class = hypervisor.GetHypervisor(hv_name)
1468 utils.ForceDictType(hv_params, constants.HVS_PARAMETER_TYPES)
1469 hv_class.CheckParameterSyntax(hv_params)
1470 _CheckHVParams(self, node_list, hv_name, hv_params)
1472 def Exec(self, feedback_fn):
1473 """Change the parameters of the cluster.
1476 if self.op.vg_name is not None:
1477 if self.op.vg_name != self.cfg.GetVGName():
1478 self.cfg.SetVGName(self.op.vg_name)
1480 feedback_fn("Cluster LVM configuration already in desired"
1481 " state, not changing")
1482 if self.op.hvparams:
1483 self.cluster.hvparams = self.new_hvparams
1484 if self.op.enabled_hypervisors is not None:
1485 self.cluster.enabled_hypervisors = self.op.enabled_hypervisors
1486 if self.op.beparams:
1487 self.cluster.beparams[constants.BEGR_DEFAULT] = self.new_beparams
1488 if self.op.candidate_pool_size is not None:
1489 self.cluster.candidate_pool_size = self.op.candidate_pool_size
1491 self.cfg.Update(self.cluster)
1493 # we want to update nodes after the cluster so that if any errors
1494 # happen, we have recorded and saved the cluster info
1495 if self.op.candidate_pool_size is not None:
1496 _AdjustCandidatePool(self)
1499 class LURedistributeConfig(NoHooksLU):
1500 """Force the redistribution of cluster configuration.
1502 This is a very simple LU.
1508 def ExpandNames(self):
1509 self.needed_locks = {
1510 locking.LEVEL_NODE: locking.ALL_SET,
1512 self.share_locks[locking.LEVEL_NODE] = 1
1514 def CheckPrereq(self):
1515 """Check prerequisites.
1519 def Exec(self, feedback_fn):
1520 """Redistribute the configuration.
1523 self.cfg.Update(self.cfg.GetClusterInfo())
1526 def _WaitForSync(lu, instance, oneshot=False, unlock=False):
1527 """Sleep and poll for an instance's disk to sync.
1530 if not instance.disks:
1534 lu.proc.LogInfo("Waiting for instance %s to sync disks." % instance.name)
1536 node = instance.primary_node
1538 for dev in instance.disks:
1539 lu.cfg.SetDiskID(dev, node)
1545 cumul_degraded = False
1546 rstats = lu.rpc.call_blockdev_getmirrorstatus(node, instance.disks)
1547 if rstats.failed or not rstats.data:
1548 lu.LogWarning("Can't get any data from node %s", node)
1551 raise errors.RemoteError("Can't contact node %s for mirror data,"
1552 " aborting." % node)
1555 rstats = rstats.data
1557 for i, mstat in enumerate(rstats):
1559 lu.LogWarning("Can't compute data for node %s/%s",
1560 node, instance.disks[i].iv_name)
1562 # we ignore the ldisk parameter
1563 perc_done, est_time, is_degraded, _ = mstat
1564 cumul_degraded = cumul_degraded or (is_degraded and perc_done is None)
1565 if perc_done is not None:
1567 if est_time is not None:
1568 rem_time = "%d estimated seconds remaining" % est_time
1571 rem_time = "no time estimate"
1572 lu.proc.LogInfo("- device %s: %5.2f%% done, %s" %
1573 (instance.disks[i].iv_name, perc_done, rem_time))
1577 time.sleep(min(60, max_time))
1580 lu.proc.LogInfo("Instance %s's disks are in sync." % instance.name)
1581 return not cumul_degraded
1584 def _CheckDiskConsistency(lu, dev, node, on_primary, ldisk=False):
1585 """Check that mirrors are not degraded.
1587 The ldisk parameter, if True, will change the test from the
1588 is_degraded attribute (which represents overall non-ok status for
1589 the device(s)) to the ldisk (representing the local storage status).
1592 lu.cfg.SetDiskID(dev, node)
1599 if on_primary or dev.AssembleOnSecondary():
1600 rstats = lu.rpc.call_blockdev_find(node, dev)
1601 msg = rstats.RemoteFailMsg()
1603 lu.LogWarning("Can't find disk on node %s: %s", node, msg)
1605 elif not rstats.payload:
1606 lu.LogWarning("Can't find disk on node %s", node)
1609 result = result and (not rstats.payload[idx])
1611 for child in dev.children:
1612 result = result and _CheckDiskConsistency(lu, child, node, on_primary)
1617 class LUDiagnoseOS(NoHooksLU):
1618 """Logical unit for OS diagnose/query.
1621 _OP_REQP = ["output_fields", "names"]
1623 _FIELDS_STATIC = utils.FieldSet()
1624 _FIELDS_DYNAMIC = utils.FieldSet("name", "valid", "node_status")
1626 def ExpandNames(self):
1628 raise errors.OpPrereqError("Selective OS query not supported")
1630 _CheckOutputFields(static=self._FIELDS_STATIC,
1631 dynamic=self._FIELDS_DYNAMIC,
1632 selected=self.op.output_fields)
1634 # Lock all nodes, in shared mode
1635 self.needed_locks = {}
1636 self.share_locks[locking.LEVEL_NODE] = 1
1637 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
1639 def CheckPrereq(self):
1640 """Check prerequisites.
1645 def _DiagnoseByOS(node_list, rlist):
1646 """Remaps a per-node return list into an a per-os per-node dictionary
1648 @param node_list: a list with the names of all nodes
1649 @param rlist: a map with node names as keys and OS objects as values
1652 @returns: a dictionary with osnames as keys and as value another map, with
1653 nodes as keys and list of OS objects as values, eg::
1655 {"debian-etch": {"node1": [<object>,...],
1656 "node2": [<object>,]}
1661 for node_name, nr in rlist.iteritems():
1662 if nr.failed or not nr.data:
1664 for os_obj in nr.data:
1665 if os_obj.name not in all_os:
1666 # build a list of nodes for this os containing empty lists
1667 # for each node in node_list
1668 all_os[os_obj.name] = {}
1669 for nname in node_list:
1670 all_os[os_obj.name][nname] = []
1671 all_os[os_obj.name][node_name].append(os_obj)
1674 def Exec(self, feedback_fn):
1675 """Compute the list of OSes.
1678 node_list = self.acquired_locks[locking.LEVEL_NODE]
1679 valid_nodes = [node for node in self.cfg.GetOnlineNodeList()
1680 if node in node_list]
1681 node_data = self.rpc.call_os_diagnose(valid_nodes)
1682 if node_data == False:
1683 raise errors.OpExecError("Can't gather the list of OSes")
1684 pol = self._DiagnoseByOS(valid_nodes, node_data)
1686 for os_name, os_data in pol.iteritems():
1688 for field in self.op.output_fields:
1691 elif field == "valid":
1692 val = utils.all([osl and osl[0] for osl in os_data.values()])
1693 elif field == "node_status":
1695 for node_name, nos_list in os_data.iteritems():
1696 val[node_name] = [(v.status, v.path) for v in nos_list]
1698 raise errors.ParameterError(field)
1705 class LURemoveNode(LogicalUnit):
1706 """Logical unit for removing a node.
1709 HPATH = "node-remove"
1710 HTYPE = constants.HTYPE_NODE
1711 _OP_REQP = ["node_name"]
1713 def BuildHooksEnv(self):
1716 This doesn't run on the target node in the pre phase as a failed
1717 node would then be impossible to remove.
1721 "OP_TARGET": self.op.node_name,
1722 "NODE_NAME": self.op.node_name,
1724 all_nodes = self.cfg.GetNodeList()
1725 all_nodes.remove(self.op.node_name)
1726 return env, all_nodes, all_nodes
1728 def CheckPrereq(self):
1729 """Check prerequisites.
1732 - the node exists in the configuration
1733 - it does not have primary or secondary instances
1734 - it's not the master
1736 Any errors are signalled by raising errors.OpPrereqError.
1739 node = self.cfg.GetNodeInfo(self.cfg.ExpandNodeName(self.op.node_name))
1741 raise errors.OpPrereqError, ("Node '%s' is unknown." % self.op.node_name)
1743 instance_list = self.cfg.GetInstanceList()
1745 masternode = self.cfg.GetMasterNode()
1746 if node.name == masternode:
1747 raise errors.OpPrereqError("Node is the master node,"
1748 " you need to failover first.")
1750 for instance_name in instance_list:
1751 instance = self.cfg.GetInstanceInfo(instance_name)
1752 if node.name in instance.all_nodes:
1753 raise errors.OpPrereqError("Instance %s is still running on the node,"
1754 " please remove first." % instance_name)
1755 self.op.node_name = node.name
1758 def Exec(self, feedback_fn):
1759 """Removes the node from the cluster.
1763 logging.info("Stopping the node daemon and removing configs from node %s",
1766 self.context.RemoveNode(node.name)
1768 self.rpc.call_node_leave_cluster(node.name)
1770 # Promote nodes to master candidate as needed
1771 _AdjustCandidatePool(self)
1774 class LUQueryNodes(NoHooksLU):
1775 """Logical unit for querying nodes.
1778 _OP_REQP = ["output_fields", "names", "use_locking"]
1780 _FIELDS_DYNAMIC = utils.FieldSet(
1782 "mtotal", "mnode", "mfree",
1784 "ctotal", "cnodes", "csockets",
1787 _FIELDS_STATIC = utils.FieldSet(
1788 "name", "pinst_cnt", "sinst_cnt",
1789 "pinst_list", "sinst_list",
1790 "pip", "sip", "tags",
1798 def ExpandNames(self):
1799 _CheckOutputFields(static=self._FIELDS_STATIC,
1800 dynamic=self._FIELDS_DYNAMIC,
1801 selected=self.op.output_fields)
1803 self.needed_locks = {}
1804 self.share_locks[locking.LEVEL_NODE] = 1
1807 self.wanted = _GetWantedNodes(self, self.op.names)
1809 self.wanted = locking.ALL_SET
1811 self.do_node_query = self._FIELDS_STATIC.NonMatching(self.op.output_fields)
1812 self.do_locking = self.do_node_query and self.op.use_locking
1814 # if we don't request only static fields, we need to lock the nodes
1815 self.needed_locks[locking.LEVEL_NODE] = self.wanted
1818 def CheckPrereq(self):
1819 """Check prerequisites.
1822 # The validation of the node list is done in the _GetWantedNodes,
1823 # if non empty, and if empty, there's no validation to do
1826 def Exec(self, feedback_fn):
1827 """Computes the list of nodes and their attributes.
1830 all_info = self.cfg.GetAllNodesInfo()
1832 nodenames = self.acquired_locks[locking.LEVEL_NODE]
1833 elif self.wanted != locking.ALL_SET:
1834 nodenames = self.wanted
1835 missing = set(nodenames).difference(all_info.keys())
1837 raise errors.OpExecError(
1838 "Some nodes were removed before retrieving their data: %s" % missing)
1840 nodenames = all_info.keys()
1842 nodenames = utils.NiceSort(nodenames)
1843 nodelist = [all_info[name] for name in nodenames]
1845 # begin data gathering
1847 if self.do_node_query:
1849 node_data = self.rpc.call_node_info(nodenames, self.cfg.GetVGName(),
1850 self.cfg.GetHypervisorType())
1851 for name in nodenames:
1852 nodeinfo = node_data[name]
1853 if not nodeinfo.failed and nodeinfo.data:
1854 nodeinfo = nodeinfo.data
1855 fn = utils.TryConvert
1857 "mtotal": fn(int, nodeinfo.get('memory_total', None)),
1858 "mnode": fn(int, nodeinfo.get('memory_dom0', None)),
1859 "mfree": fn(int, nodeinfo.get('memory_free', None)),
1860 "dtotal": fn(int, nodeinfo.get('vg_size', None)),
1861 "dfree": fn(int, nodeinfo.get('vg_free', None)),
1862 "ctotal": fn(int, nodeinfo.get('cpu_total', None)),
1863 "bootid": nodeinfo.get('bootid', None),
1864 "cnodes": fn(int, nodeinfo.get('cpu_nodes', None)),
1865 "csockets": fn(int, nodeinfo.get('cpu_sockets', None)),
1868 live_data[name] = {}
1870 live_data = dict.fromkeys(nodenames, {})
1872 node_to_primary = dict([(name, set()) for name in nodenames])
1873 node_to_secondary = dict([(name, set()) for name in nodenames])
1875 inst_fields = frozenset(("pinst_cnt", "pinst_list",
1876 "sinst_cnt", "sinst_list"))
1877 if inst_fields & frozenset(self.op.output_fields):
1878 instancelist = self.cfg.GetInstanceList()
1880 for instance_name in instancelist:
1881 inst = self.cfg.GetInstanceInfo(instance_name)
1882 if inst.primary_node in node_to_primary:
1883 node_to_primary[inst.primary_node].add(inst.name)
1884 for secnode in inst.secondary_nodes:
1885 if secnode in node_to_secondary:
1886 node_to_secondary[secnode].add(inst.name)
1888 master_node = self.cfg.GetMasterNode()
1890 # end data gathering
1893 for node in nodelist:
1895 for field in self.op.output_fields:
1898 elif field == "pinst_list":
1899 val = list(node_to_primary[node.name])
1900 elif field == "sinst_list":
1901 val = list(node_to_secondary[node.name])
1902 elif field == "pinst_cnt":
1903 val = len(node_to_primary[node.name])
1904 elif field == "sinst_cnt":
1905 val = len(node_to_secondary[node.name])
1906 elif field == "pip":
1907 val = node.primary_ip
1908 elif field == "sip":
1909 val = node.secondary_ip
1910 elif field == "tags":
1911 val = list(node.GetTags())
1912 elif field == "serial_no":
1913 val = node.serial_no
1914 elif field == "master_candidate":
1915 val = node.master_candidate
1916 elif field == "master":
1917 val = node.name == master_node
1918 elif field == "offline":
1920 elif field == "drained":
1922 elif self._FIELDS_DYNAMIC.Matches(field):
1923 val = live_data[node.name].get(field, None)
1925 raise errors.ParameterError(field)
1926 node_output.append(val)
1927 output.append(node_output)
1932 class LUQueryNodeVolumes(NoHooksLU):
1933 """Logical unit for getting volumes on node(s).
1936 _OP_REQP = ["nodes", "output_fields"]
1938 _FIELDS_DYNAMIC = utils.FieldSet("phys", "vg", "name", "size", "instance")
1939 _FIELDS_STATIC = utils.FieldSet("node")
1941 def ExpandNames(self):
1942 _CheckOutputFields(static=self._FIELDS_STATIC,
1943 dynamic=self._FIELDS_DYNAMIC,
1944 selected=self.op.output_fields)
1946 self.needed_locks = {}
1947 self.share_locks[locking.LEVEL_NODE] = 1
1948 if not self.op.nodes:
1949 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
1951 self.needed_locks[locking.LEVEL_NODE] = \
1952 _GetWantedNodes(self, self.op.nodes)
1954 def CheckPrereq(self):
1955 """Check prerequisites.
1957 This checks that the fields required are valid output fields.
1960 self.nodes = self.acquired_locks[locking.LEVEL_NODE]
1962 def Exec(self, feedback_fn):
1963 """Computes the list of nodes and their attributes.
1966 nodenames = self.nodes
1967 volumes = self.rpc.call_node_volumes(nodenames)
1969 ilist = [self.cfg.GetInstanceInfo(iname) for iname
1970 in self.cfg.GetInstanceList()]
1972 lv_by_node = dict([(inst, inst.MapLVsByNode()) for inst in ilist])
1975 for node in nodenames:
1976 if node not in volumes or volumes[node].failed or not volumes[node].data:
1979 node_vols = volumes[node].data[:]
1980 node_vols.sort(key=lambda vol: vol['dev'])
1982 for vol in node_vols:
1984 for field in self.op.output_fields:
1987 elif field == "phys":
1991 elif field == "name":
1993 elif field == "size":
1994 val = int(float(vol['size']))
1995 elif field == "instance":
1997 if node not in lv_by_node[inst]:
1999 if vol['name'] in lv_by_node[inst][node]:
2005 raise errors.ParameterError(field)
2006 node_output.append(str(val))
2008 output.append(node_output)
2013 class LUAddNode(LogicalUnit):
2014 """Logical unit for adding node to the cluster.
2018 HTYPE = constants.HTYPE_NODE
2019 _OP_REQP = ["node_name"]
2021 def BuildHooksEnv(self):
2024 This will run on all nodes before, and on all nodes + the new node after.
2028 "OP_TARGET": self.op.node_name,
2029 "NODE_NAME": self.op.node_name,
2030 "NODE_PIP": self.op.primary_ip,
2031 "NODE_SIP": self.op.secondary_ip,
2033 nodes_0 = self.cfg.GetNodeList()
2034 nodes_1 = nodes_0 + [self.op.node_name, ]
2035 return env, nodes_0, nodes_1
2037 def CheckPrereq(self):
2038 """Check prerequisites.
2041 - the new node is not already in the config
2043 - its parameters (single/dual homed) matches the cluster
2045 Any errors are signalled by raising errors.OpPrereqError.
2048 node_name = self.op.node_name
2051 dns_data = utils.HostInfo(node_name)
2053 node = dns_data.name
2054 primary_ip = self.op.primary_ip = dns_data.ip
2055 secondary_ip = getattr(self.op, "secondary_ip", None)
2056 if secondary_ip is None:
2057 secondary_ip = primary_ip
2058 if not utils.IsValidIP(secondary_ip):
2059 raise errors.OpPrereqError("Invalid secondary IP given")
2060 self.op.secondary_ip = secondary_ip
2062 node_list = cfg.GetNodeList()
2063 if not self.op.readd and node in node_list:
2064 raise errors.OpPrereqError("Node %s is already in the configuration" %
2066 elif self.op.readd and node not in node_list:
2067 raise errors.OpPrereqError("Node %s is not in the configuration" % node)
2069 for existing_node_name in node_list:
2070 existing_node = cfg.GetNodeInfo(existing_node_name)
2072 if self.op.readd and node == existing_node_name:
2073 if (existing_node.primary_ip != primary_ip or
2074 existing_node.secondary_ip != secondary_ip):
2075 raise errors.OpPrereqError("Readded node doesn't have the same IP"
2076 " address configuration as before")
2079 if (existing_node.primary_ip == primary_ip or
2080 existing_node.secondary_ip == primary_ip or
2081 existing_node.primary_ip == secondary_ip or
2082 existing_node.secondary_ip == secondary_ip):
2083 raise errors.OpPrereqError("New node ip address(es) conflict with"
2084 " existing node %s" % existing_node.name)
2086 # check that the type of the node (single versus dual homed) is the
2087 # same as for the master
2088 myself = cfg.GetNodeInfo(self.cfg.GetMasterNode())
2089 master_singlehomed = myself.secondary_ip == myself.primary_ip
2090 newbie_singlehomed = secondary_ip == primary_ip
2091 if master_singlehomed != newbie_singlehomed:
2092 if master_singlehomed:
2093 raise errors.OpPrereqError("The master has no private ip but the"
2094 " new node has one")
2096 raise errors.OpPrereqError("The master has a private ip but the"
2097 " new node doesn't have one")
2099 # checks reachablity
2100 if not utils.TcpPing(primary_ip, constants.DEFAULT_NODED_PORT):
2101 raise errors.OpPrereqError("Node not reachable by ping")
2103 if not newbie_singlehomed:
2104 # check reachability from my secondary ip to newbie's secondary ip
2105 if not utils.TcpPing(secondary_ip, constants.DEFAULT_NODED_PORT,
2106 source=myself.secondary_ip):
2107 raise errors.OpPrereqError("Node secondary ip not reachable by TCP"
2108 " based ping to noded port")
2110 cp_size = self.cfg.GetClusterInfo().candidate_pool_size
2111 mc_now, _ = self.cfg.GetMasterCandidateStats()
2112 master_candidate = mc_now < cp_size
2114 self.new_node = objects.Node(name=node,
2115 primary_ip=primary_ip,
2116 secondary_ip=secondary_ip,
2117 master_candidate=master_candidate,
2118 offline=False, drained=False)
2120 def Exec(self, feedback_fn):
2121 """Adds the new node to the cluster.
2124 new_node = self.new_node
2125 node = new_node.name
2127 # check connectivity
2128 result = self.rpc.call_version([node])[node]
2131 if constants.PROTOCOL_VERSION == result.data:
2132 logging.info("Communication to node %s fine, sw version %s match",
2135 raise errors.OpExecError("Version mismatch master version %s,"
2136 " node version %s" %
2137 (constants.PROTOCOL_VERSION, result.data))
2139 raise errors.OpExecError("Cannot get version from the new node")
2142 logging.info("Copy ssh key to node %s", node)
2143 priv_key, pub_key, _ = ssh.GetUserFiles(constants.GANETI_RUNAS)
2145 keyfiles = [constants.SSH_HOST_DSA_PRIV, constants.SSH_HOST_DSA_PUB,
2146 constants.SSH_HOST_RSA_PRIV, constants.SSH_HOST_RSA_PUB,
2152 keyarray.append(f.read())
2156 result = self.rpc.call_node_add(node, keyarray[0], keyarray[1],
2158 keyarray[3], keyarray[4], keyarray[5])
2160 msg = result.RemoteFailMsg()
2162 raise errors.OpExecError("Cannot transfer ssh keys to the"
2163 " new node: %s" % msg)
2165 # Add node to our /etc/hosts, and add key to known_hosts
2166 utils.AddHostToEtcHosts(new_node.name)
2168 if new_node.secondary_ip != new_node.primary_ip:
2169 result = self.rpc.call_node_has_ip_address(new_node.name,
2170 new_node.secondary_ip)
2171 if result.failed or not result.data:
2172 raise errors.OpExecError("Node claims it doesn't have the secondary ip"
2173 " you gave (%s). Please fix and re-run this"
2174 " command." % new_node.secondary_ip)
2176 node_verify_list = [self.cfg.GetMasterNode()]
2177 node_verify_param = {
2179 # TODO: do a node-net-test as well?
2182 result = self.rpc.call_node_verify(node_verify_list, node_verify_param,
2183 self.cfg.GetClusterName())
2184 for verifier in node_verify_list:
2185 if result[verifier].failed or not result[verifier].data:
2186 raise errors.OpExecError("Cannot communicate with %s's node daemon"
2187 " for remote verification" % verifier)
2188 if result[verifier].data['nodelist']:
2189 for failed in result[verifier].data['nodelist']:
2190 feedback_fn("ssh/hostname verification failed %s -> %s" %
2191 (verifier, result[verifier].data['nodelist'][failed]))
2192 raise errors.OpExecError("ssh/hostname verification failed.")
2194 # Distribute updated /etc/hosts and known_hosts to all nodes,
2195 # including the node just added
2196 myself = self.cfg.GetNodeInfo(self.cfg.GetMasterNode())
2197 dist_nodes = self.cfg.GetNodeList()
2198 if not self.op.readd:
2199 dist_nodes.append(node)
2200 if myself.name in dist_nodes:
2201 dist_nodes.remove(myself.name)
2203 logging.debug("Copying hosts and known_hosts to all nodes")
2204 for fname in (constants.ETC_HOSTS, constants.SSH_KNOWN_HOSTS_FILE):
2205 result = self.rpc.call_upload_file(dist_nodes, fname)
2206 for to_node, to_result in result.iteritems():
2207 if to_result.failed or not to_result.data:
2208 logging.error("Copy of file %s to node %s failed", fname, to_node)
2211 enabled_hypervisors = self.cfg.GetClusterInfo().enabled_hypervisors
2212 if constants.HTS_COPY_VNC_PASSWORD.intersection(enabled_hypervisors):
2213 to_copy.append(constants.VNC_PASSWORD_FILE)
2215 for fname in to_copy:
2216 result = self.rpc.call_upload_file([node], fname)
2217 if result[node].failed or not result[node]:
2218 logging.error("Could not copy file %s to node %s", fname, node)
2221 self.context.ReaddNode(new_node)
2223 self.context.AddNode(new_node)
2226 class LUSetNodeParams(LogicalUnit):
2227 """Modifies the parameters of a node.
2230 HPATH = "node-modify"
2231 HTYPE = constants.HTYPE_NODE
2232 _OP_REQP = ["node_name"]
2235 def CheckArguments(self):
2236 node_name = self.cfg.ExpandNodeName(self.op.node_name)
2237 if node_name is None:
2238 raise errors.OpPrereqError("Invalid node name '%s'" % self.op.node_name)
2239 self.op.node_name = node_name
2240 _CheckBooleanOpField(self.op, 'master_candidate')
2241 _CheckBooleanOpField(self.op, 'offline')
2242 _CheckBooleanOpField(self.op, 'drained')
2243 all_mods = [self.op.offline, self.op.master_candidate, self.op.drained]
2244 if all_mods.count(None) == 3:
2245 raise errors.OpPrereqError("Please pass at least one modification")
2246 if all_mods.count(True) > 1:
2247 raise errors.OpPrereqError("Can't set the node into more than one"
2248 " state at the same time")
2250 def ExpandNames(self):
2251 self.needed_locks = {locking.LEVEL_NODE: self.op.node_name}
2253 def BuildHooksEnv(self):
2256 This runs on the master node.
2260 "OP_TARGET": self.op.node_name,
2261 "MASTER_CANDIDATE": str(self.op.master_candidate),
2262 "OFFLINE": str(self.op.offline),
2263 "DRAINED": str(self.op.drained),
2265 nl = [self.cfg.GetMasterNode(),
2269 def CheckPrereq(self):
2270 """Check prerequisites.
2272 This only checks the instance list against the existing names.
2275 node = self.node = self.cfg.GetNodeInfo(self.op.node_name)
2277 if ((self.op.master_candidate == False or self.op.offline == True or
2278 self.op.drained == True) and node.master_candidate):
2279 # we will demote the node from master_candidate
2280 if self.op.node_name == self.cfg.GetMasterNode():
2281 raise errors.OpPrereqError("The master node has to be a"
2282 " master candidate, online and not drained")
2283 cp_size = self.cfg.GetClusterInfo().candidate_pool_size
2284 num_candidates, _ = self.cfg.GetMasterCandidateStats()
2285 if num_candidates <= cp_size:
2286 msg = ("Not enough master candidates (desired"
2287 " %d, new value will be %d)" % (cp_size, num_candidates-1))
2289 self.LogWarning(msg)
2291 raise errors.OpPrereqError(msg)
2293 if (self.op.master_candidate == True and
2294 ((node.offline and not self.op.offline == False) or
2295 (node.drained and not self.op.drained == False))):
2296 raise errors.OpPrereqError("Node '%s' is offline or drained, can't set"
2297 " to master_candidate")
2301 def Exec(self, feedback_fn):
2310 if self.op.offline is not None:
2311 node.offline = self.op.offline
2312 result.append(("offline", str(self.op.offline)))
2313 if self.op.offline == True:
2314 if node.master_candidate:
2315 node.master_candidate = False
2317 result.append(("master_candidate", "auto-demotion due to offline"))
2319 node.drained = False
2320 result.append(("drained", "clear drained status due to offline"))
2322 if self.op.master_candidate is not None:
2323 node.master_candidate = self.op.master_candidate
2325 result.append(("master_candidate", str(self.op.master_candidate)))
2326 if self.op.master_candidate == False:
2327 rrc = self.rpc.call_node_demote_from_mc(node.name)
2328 msg = rrc.RemoteFailMsg()
2330 self.LogWarning("Node failed to demote itself: %s" % msg)
2332 if self.op.drained is not None:
2333 node.drained = self.op.drained
2334 result.append(("drained", str(self.op.drained)))
2335 if self.op.drained == True:
2336 if node.master_candidate:
2337 node.master_candidate = False
2339 result.append(("master_candidate", "auto-demotion due to drain"))
2341 node.offline = False
2342 result.append(("offline", "clear offline status due to drain"))
2344 # this will trigger configuration file update, if needed
2345 self.cfg.Update(node)
2346 # this will trigger job queue propagation or cleanup
2348 self.context.ReaddNode(node)
2353 class LUQueryClusterInfo(NoHooksLU):
2354 """Query cluster configuration.
2360 def ExpandNames(self):
2361 self.needed_locks = {}
2363 def CheckPrereq(self):
2364 """No prerequsites needed for this LU.
2369 def Exec(self, feedback_fn):
2370 """Return cluster config.
2373 cluster = self.cfg.GetClusterInfo()
2375 "software_version": constants.RELEASE_VERSION,
2376 "protocol_version": constants.PROTOCOL_VERSION,
2377 "config_version": constants.CONFIG_VERSION,
2378 "os_api_version": constants.OS_API_VERSION,
2379 "export_version": constants.EXPORT_VERSION,
2380 "architecture": (platform.architecture()[0], platform.machine()),
2381 "name": cluster.cluster_name,
2382 "master": cluster.master_node,
2383 "default_hypervisor": cluster.default_hypervisor,
2384 "enabled_hypervisors": cluster.enabled_hypervisors,
2385 "hvparams": dict([(hypervisor, cluster.hvparams[hypervisor])
2386 for hypervisor in cluster.enabled_hypervisors]),
2387 "beparams": cluster.beparams,
2388 "candidate_pool_size": cluster.candidate_pool_size,
2394 class LUQueryConfigValues(NoHooksLU):
2395 """Return configuration values.
2400 _FIELDS_DYNAMIC = utils.FieldSet()
2401 _FIELDS_STATIC = utils.FieldSet("cluster_name", "master_node", "drain_flag")
2403 def ExpandNames(self):
2404 self.needed_locks = {}
2406 _CheckOutputFields(static=self._FIELDS_STATIC,
2407 dynamic=self._FIELDS_DYNAMIC,
2408 selected=self.op.output_fields)
2410 def CheckPrereq(self):
2411 """No prerequisites.
2416 def Exec(self, feedback_fn):
2417 """Dump a representation of the cluster config to the standard output.
2421 for field in self.op.output_fields:
2422 if field == "cluster_name":
2423 entry = self.cfg.GetClusterName()
2424 elif field == "master_node":
2425 entry = self.cfg.GetMasterNode()
2426 elif field == "drain_flag":
2427 entry = os.path.exists(constants.JOB_QUEUE_DRAIN_FILE)
2429 raise errors.ParameterError(field)
2430 values.append(entry)
2434 class LUActivateInstanceDisks(NoHooksLU):
2435 """Bring up an instance's disks.
2438 _OP_REQP = ["instance_name"]
2441 def ExpandNames(self):
2442 self._ExpandAndLockInstance()
2443 self.needed_locks[locking.LEVEL_NODE] = []
2444 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
2446 def DeclareLocks(self, level):
2447 if level == locking.LEVEL_NODE:
2448 self._LockInstancesNodes()
2450 def CheckPrereq(self):
2451 """Check prerequisites.
2453 This checks that the instance is in the cluster.
2456 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2457 assert self.instance is not None, \
2458 "Cannot retrieve locked instance %s" % self.op.instance_name
2459 _CheckNodeOnline(self, self.instance.primary_node)
2461 def Exec(self, feedback_fn):
2462 """Activate the disks.
2465 disks_ok, disks_info = _AssembleInstanceDisks(self, self.instance)
2467 raise errors.OpExecError("Cannot activate block devices")
2472 def _AssembleInstanceDisks(lu, instance, ignore_secondaries=False):
2473 """Prepare the block devices for an instance.
2475 This sets up the block devices on all nodes.
2477 @type lu: L{LogicalUnit}
2478 @param lu: the logical unit on whose behalf we execute
2479 @type instance: L{objects.Instance}
2480 @param instance: the instance for whose disks we assemble
2481 @type ignore_secondaries: boolean
2482 @param ignore_secondaries: if true, errors on secondary nodes
2483 won't result in an error return from the function
2484 @return: False if the operation failed, otherwise a list of
2485 (host, instance_visible_name, node_visible_name)
2486 with the mapping from node devices to instance devices
2491 iname = instance.name
2492 # With the two passes mechanism we try to reduce the window of
2493 # opportunity for the race condition of switching DRBD to primary
2494 # before handshaking occured, but we do not eliminate it
2496 # The proper fix would be to wait (with some limits) until the
2497 # connection has been made and drbd transitions from WFConnection
2498 # into any other network-connected state (Connected, SyncTarget,
2501 # 1st pass, assemble on all nodes in secondary mode
2502 for inst_disk in instance.disks:
2503 for node, node_disk in inst_disk.ComputeNodeTree(instance.primary_node):
2504 lu.cfg.SetDiskID(node_disk, node)
2505 result = lu.rpc.call_blockdev_assemble(node, node_disk, iname, False)
2506 msg = result.RemoteFailMsg()
2508 lu.proc.LogWarning("Could not prepare block device %s on node %s"
2509 " (is_primary=False, pass=1): %s",
2510 inst_disk.iv_name, node, msg)
2511 if not ignore_secondaries:
2514 # FIXME: race condition on drbd migration to primary
2516 # 2nd pass, do only the primary node
2517 for inst_disk in instance.disks:
2518 for node, node_disk in inst_disk.ComputeNodeTree(instance.primary_node):
2519 if node != instance.primary_node:
2521 lu.cfg.SetDiskID(node_disk, node)
2522 result = lu.rpc.call_blockdev_assemble(node, node_disk, iname, True)
2523 msg = result.RemoteFailMsg()
2525 lu.proc.LogWarning("Could not prepare block device %s on node %s"
2526 " (is_primary=True, pass=2): %s",
2527 inst_disk.iv_name, node, msg)
2529 device_info.append((instance.primary_node, inst_disk.iv_name, result.data))
2531 # leave the disks configured for the primary node
2532 # this is a workaround that would be fixed better by
2533 # improving the logical/physical id handling
2534 for disk in instance.disks:
2535 lu.cfg.SetDiskID(disk, instance.primary_node)
2537 return disks_ok, device_info
2540 def _StartInstanceDisks(lu, instance, force):
2541 """Start the disks of an instance.
2544 disks_ok, dummy = _AssembleInstanceDisks(lu, instance,
2545 ignore_secondaries=force)
2547 _ShutdownInstanceDisks(lu, instance)
2548 if force is not None and not force:
2549 lu.proc.LogWarning("", hint="If the message above refers to a"
2551 " you can retry the operation using '--force'.")
2552 raise errors.OpExecError("Disk consistency error")
2555 class LUDeactivateInstanceDisks(NoHooksLU):
2556 """Shutdown an instance's disks.
2559 _OP_REQP = ["instance_name"]
2562 def ExpandNames(self):
2563 self._ExpandAndLockInstance()
2564 self.needed_locks[locking.LEVEL_NODE] = []
2565 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
2567 def DeclareLocks(self, level):
2568 if level == locking.LEVEL_NODE:
2569 self._LockInstancesNodes()
2571 def CheckPrereq(self):
2572 """Check prerequisites.
2574 This checks that the instance is in the cluster.
2577 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2578 assert self.instance is not None, \
2579 "Cannot retrieve locked instance %s" % self.op.instance_name
2581 def Exec(self, feedback_fn):
2582 """Deactivate the disks
2585 instance = self.instance
2586 _SafeShutdownInstanceDisks(self, instance)
2589 def _SafeShutdownInstanceDisks(lu, instance):
2590 """Shutdown block devices of an instance.
2592 This function checks if an instance is running, before calling
2593 _ShutdownInstanceDisks.
2596 ins_l = lu.rpc.call_instance_list([instance.primary_node],
2597 [instance.hypervisor])
2598 ins_l = ins_l[instance.primary_node]
2599 if ins_l.failed or not isinstance(ins_l.data, list):
2600 raise errors.OpExecError("Can't contact node '%s'" %
2601 instance.primary_node)
2603 if instance.name in ins_l.data:
2604 raise errors.OpExecError("Instance is running, can't shutdown"
2607 _ShutdownInstanceDisks(lu, instance)
2610 def _ShutdownInstanceDisks(lu, instance, ignore_primary=False):
2611 """Shutdown block devices of an instance.
2613 This does the shutdown on all nodes of the instance.
2615 If the ignore_primary is false, errors on the primary node are
2620 for disk in instance.disks:
2621 for node, top_disk in disk.ComputeNodeTree(instance.primary_node):
2622 lu.cfg.SetDiskID(top_disk, node)
2623 result = lu.rpc.call_blockdev_shutdown(node, top_disk)
2624 msg = result.RemoteFailMsg()
2626 lu.LogWarning("Could not shutdown block device %s on node %s: %s",
2627 disk.iv_name, node, msg)
2628 if not ignore_primary or node != instance.primary_node:
2633 def _CheckNodeFreeMemory(lu, node, reason, requested, hypervisor_name):
2634 """Checks if a node has enough free memory.
2636 This function check if a given node has the needed amount of free
2637 memory. In case the node has less memory or we cannot get the
2638 information from the node, this function raise an OpPrereqError
2641 @type lu: C{LogicalUnit}
2642 @param lu: a logical unit from which we get configuration data
2644 @param node: the node to check
2645 @type reason: C{str}
2646 @param reason: string to use in the error message
2647 @type requested: C{int}
2648 @param requested: the amount of memory in MiB to check for
2649 @type hypervisor_name: C{str}
2650 @param hypervisor_name: the hypervisor to ask for memory stats
2651 @raise errors.OpPrereqError: if the node doesn't have enough memory, or
2652 we cannot check the node
2655 nodeinfo = lu.rpc.call_node_info([node], lu.cfg.GetVGName(), hypervisor_name)
2656 nodeinfo[node].Raise()
2657 free_mem = nodeinfo[node].data.get('memory_free')
2658 if not isinstance(free_mem, int):
2659 raise errors.OpPrereqError("Can't compute free memory on node %s, result"
2660 " was '%s'" % (node, free_mem))
2661 if requested > free_mem:
2662 raise errors.OpPrereqError("Not enough memory on node %s for %s:"
2663 " needed %s MiB, available %s MiB" %
2664 (node, reason, requested, free_mem))
2667 class LUStartupInstance(LogicalUnit):
2668 """Starts an instance.
2671 HPATH = "instance-start"
2672 HTYPE = constants.HTYPE_INSTANCE
2673 _OP_REQP = ["instance_name", "force"]
2676 def ExpandNames(self):
2677 self._ExpandAndLockInstance()
2679 def BuildHooksEnv(self):
2682 This runs on master, primary and secondary nodes of the instance.
2686 "FORCE": self.op.force,
2688 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
2689 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
2692 def CheckPrereq(self):
2693 """Check prerequisites.
2695 This checks that the instance is in the cluster.
2698 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2699 assert self.instance is not None, \
2700 "Cannot retrieve locked instance %s" % self.op.instance_name
2702 _CheckNodeOnline(self, instance.primary_node)
2704 bep = self.cfg.GetClusterInfo().FillBE(instance)
2705 # check bridges existance
2706 _CheckInstanceBridgesExist(self, instance)
2708 _CheckNodeFreeMemory(self, instance.primary_node,
2709 "starting instance %s" % instance.name,
2710 bep[constants.BE_MEMORY], instance.hypervisor)
2712 def Exec(self, feedback_fn):
2713 """Start the instance.
2716 instance = self.instance
2717 force = self.op.force
2718 extra_args = getattr(self.op, "extra_args", "")
2720 self.cfg.MarkInstanceUp(instance.name)
2722 node_current = instance.primary_node
2724 _StartInstanceDisks(self, instance, force)
2726 result = self.rpc.call_instance_start(node_current, instance, extra_args)
2727 msg = result.RemoteFailMsg()
2729 _ShutdownInstanceDisks(self, instance)
2730 raise errors.OpExecError("Could not start instance: %s" % msg)
2733 class LURebootInstance(LogicalUnit):
2734 """Reboot an instance.
2737 HPATH = "instance-reboot"
2738 HTYPE = constants.HTYPE_INSTANCE
2739 _OP_REQP = ["instance_name", "ignore_secondaries", "reboot_type"]
2742 def ExpandNames(self):
2743 if self.op.reboot_type not in [constants.INSTANCE_REBOOT_SOFT,
2744 constants.INSTANCE_REBOOT_HARD,
2745 constants.INSTANCE_REBOOT_FULL]:
2746 raise errors.ParameterError("reboot type not in [%s, %s, %s]" %
2747 (constants.INSTANCE_REBOOT_SOFT,
2748 constants.INSTANCE_REBOOT_HARD,
2749 constants.INSTANCE_REBOOT_FULL))
2750 self._ExpandAndLockInstance()
2752 def BuildHooksEnv(self):
2755 This runs on master, primary and secondary nodes of the instance.
2759 "IGNORE_SECONDARIES": self.op.ignore_secondaries,
2761 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
2762 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
2765 def CheckPrereq(self):
2766 """Check prerequisites.
2768 This checks that the instance is in the cluster.
2771 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2772 assert self.instance is not None, \
2773 "Cannot retrieve locked instance %s" % self.op.instance_name
2775 _CheckNodeOnline(self, instance.primary_node)
2777 # check bridges existance
2778 _CheckInstanceBridgesExist(self, instance)
2780 def Exec(self, feedback_fn):
2781 """Reboot the instance.
2784 instance = self.instance
2785 ignore_secondaries = self.op.ignore_secondaries
2786 reboot_type = self.op.reboot_type
2787 extra_args = getattr(self.op, "extra_args", "")
2789 node_current = instance.primary_node
2791 if reboot_type in [constants.INSTANCE_REBOOT_SOFT,
2792 constants.INSTANCE_REBOOT_HARD]:
2793 result = self.rpc.call_instance_reboot(node_current, instance,
2794 reboot_type, extra_args)
2795 if result.failed or not result.data:
2796 raise errors.OpExecError("Could not reboot instance")
2798 if not self.rpc.call_instance_shutdown(node_current, instance):
2799 raise errors.OpExecError("could not shutdown instance for full reboot")
2800 _ShutdownInstanceDisks(self, instance)
2801 _StartInstanceDisks(self, instance, ignore_secondaries)
2802 result = self.rpc.call_instance_start(node_current, instance, extra_args)
2803 msg = result.RemoteFailMsg()
2805 _ShutdownInstanceDisks(self, instance)
2806 raise errors.OpExecError("Could not start instance for"
2807 " full reboot: %s" % msg)
2809 self.cfg.MarkInstanceUp(instance.name)
2812 class LUShutdownInstance(LogicalUnit):
2813 """Shutdown an instance.
2816 HPATH = "instance-stop"
2817 HTYPE = constants.HTYPE_INSTANCE
2818 _OP_REQP = ["instance_name"]
2821 def ExpandNames(self):
2822 self._ExpandAndLockInstance()
2824 def BuildHooksEnv(self):
2827 This runs on master, primary and secondary nodes of the instance.
2830 env = _BuildInstanceHookEnvByObject(self, self.instance)
2831 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
2834 def CheckPrereq(self):
2835 """Check prerequisites.
2837 This checks that the instance is in the cluster.
2840 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2841 assert self.instance is not None, \
2842 "Cannot retrieve locked instance %s" % self.op.instance_name
2843 _CheckNodeOnline(self, self.instance.primary_node)
2845 def Exec(self, feedback_fn):
2846 """Shutdown the instance.
2849 instance = self.instance
2850 node_current = instance.primary_node
2851 self.cfg.MarkInstanceDown(instance.name)
2852 result = self.rpc.call_instance_shutdown(node_current, instance)
2853 if result.failed or not result.data:
2854 self.proc.LogWarning("Could not shutdown instance")
2856 _ShutdownInstanceDisks(self, instance)
2859 class LUReinstallInstance(LogicalUnit):
2860 """Reinstall an instance.
2863 HPATH = "instance-reinstall"
2864 HTYPE = constants.HTYPE_INSTANCE
2865 _OP_REQP = ["instance_name"]
2868 def ExpandNames(self):
2869 self._ExpandAndLockInstance()
2871 def BuildHooksEnv(self):
2874 This runs on master, primary and secondary nodes of the instance.
2877 env = _BuildInstanceHookEnvByObject(self, self.instance)
2878 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
2881 def CheckPrereq(self):
2882 """Check prerequisites.
2884 This checks that the instance is in the cluster and is not running.
2887 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2888 assert instance is not None, \
2889 "Cannot retrieve locked instance %s" % self.op.instance_name
2890 _CheckNodeOnline(self, instance.primary_node)
2892 if instance.disk_template == constants.DT_DISKLESS:
2893 raise errors.OpPrereqError("Instance '%s' has no disks" %
2894 self.op.instance_name)
2895 if instance.admin_up:
2896 raise errors.OpPrereqError("Instance '%s' is marked to be up" %
2897 self.op.instance_name)
2898 remote_info = self.rpc.call_instance_info(instance.primary_node,
2900 instance.hypervisor)
2901 if remote_info.failed or remote_info.data:
2902 raise errors.OpPrereqError("Instance '%s' is running on the node %s" %
2903 (self.op.instance_name,
2904 instance.primary_node))
2906 self.op.os_type = getattr(self.op, "os_type", None)
2907 if self.op.os_type is not None:
2909 pnode = self.cfg.GetNodeInfo(
2910 self.cfg.ExpandNodeName(instance.primary_node))
2912 raise errors.OpPrereqError("Primary node '%s' is unknown" %
2914 result = self.rpc.call_os_get(pnode.name, self.op.os_type)
2916 if not isinstance(result.data, objects.OS):
2917 raise errors.OpPrereqError("OS '%s' not in supported OS list for"
2918 " primary node" % self.op.os_type)
2920 self.instance = instance
2922 def Exec(self, feedback_fn):
2923 """Reinstall the instance.
2926 inst = self.instance
2928 if self.op.os_type is not None:
2929 feedback_fn("Changing OS to '%s'..." % self.op.os_type)
2930 inst.os = self.op.os_type
2931 self.cfg.Update(inst)
2933 _StartInstanceDisks(self, inst, None)
2935 feedback_fn("Running the instance OS create scripts...")
2936 result = self.rpc.call_instance_os_add(inst.primary_node, inst)
2937 msg = result.RemoteFailMsg()
2939 raise errors.OpExecError("Could not install OS for instance %s"
2941 (inst.name, inst.primary_node, msg))
2943 _ShutdownInstanceDisks(self, inst)
2946 class LURenameInstance(LogicalUnit):
2947 """Rename an instance.
2950 HPATH = "instance-rename"
2951 HTYPE = constants.HTYPE_INSTANCE
2952 _OP_REQP = ["instance_name", "new_name"]
2954 def BuildHooksEnv(self):
2957 This runs on master, primary and secondary nodes of the instance.
2960 env = _BuildInstanceHookEnvByObject(self, self.instance)
2961 env["INSTANCE_NEW_NAME"] = self.op.new_name
2962 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
2965 def CheckPrereq(self):
2966 """Check prerequisites.
2968 This checks that the instance is in the cluster and is not running.
2971 instance = self.cfg.GetInstanceInfo(
2972 self.cfg.ExpandInstanceName(self.op.instance_name))
2973 if instance is None:
2974 raise errors.OpPrereqError("Instance '%s' not known" %
2975 self.op.instance_name)
2976 _CheckNodeOnline(self, instance.primary_node)
2978 if instance.admin_up:
2979 raise errors.OpPrereqError("Instance '%s' is marked to be up" %
2980 self.op.instance_name)
2981 remote_info = self.rpc.call_instance_info(instance.primary_node,
2983 instance.hypervisor)
2985 if remote_info.data:
2986 raise errors.OpPrereqError("Instance '%s' is running on the node %s" %
2987 (self.op.instance_name,
2988 instance.primary_node))
2989 self.instance = instance
2991 # new name verification
2992 name_info = utils.HostInfo(self.op.new_name)
2994 self.op.new_name = new_name = name_info.name
2995 instance_list = self.cfg.GetInstanceList()
2996 if new_name in instance_list:
2997 raise errors.OpPrereqError("Instance '%s' is already in the cluster" %
3000 if not getattr(self.op, "ignore_ip", False):
3001 if utils.TcpPing(name_info.ip, constants.DEFAULT_NODED_PORT):
3002 raise errors.OpPrereqError("IP %s of instance %s already in use" %
3003 (name_info.ip, new_name))
3006 def Exec(self, feedback_fn):
3007 """Reinstall the instance.
3010 inst = self.instance
3011 old_name = inst.name
3013 if inst.disk_template == constants.DT_FILE:
3014 old_file_storage_dir = os.path.dirname(inst.disks[0].logical_id[1])
3016 self.cfg.RenameInstance(inst.name, self.op.new_name)
3017 # Change the instance lock. This is definitely safe while we hold the BGL
3018 self.context.glm.remove(locking.LEVEL_INSTANCE, old_name)
3019 self.context.glm.add(locking.LEVEL_INSTANCE, self.op.new_name)
3021 # re-read the instance from the configuration after rename
3022 inst = self.cfg.GetInstanceInfo(self.op.new_name)
3024 if inst.disk_template == constants.DT_FILE:
3025 new_file_storage_dir = os.path.dirname(inst.disks[0].logical_id[1])
3026 result = self.rpc.call_file_storage_dir_rename(inst.primary_node,
3027 old_file_storage_dir,
3028 new_file_storage_dir)
3031 raise errors.OpExecError("Could not connect to node '%s' to rename"
3032 " directory '%s' to '%s' (but the instance"
3033 " has been renamed in Ganeti)" % (
3034 inst.primary_node, old_file_storage_dir,
3035 new_file_storage_dir))
3037 if not result.data[0]:
3038 raise errors.OpExecError("Could not rename directory '%s' to '%s'"
3039 " (but the instance has been renamed in"
3040 " Ganeti)" % (old_file_storage_dir,
3041 new_file_storage_dir))
3043 _StartInstanceDisks(self, inst, None)
3045 result = self.rpc.call_instance_run_rename(inst.primary_node, inst,
3047 msg = result.RemoteFailMsg()
3049 msg = ("Could not run OS rename script for instance %s on node %s"
3050 " (but the instance has been renamed in Ganeti): %s" %
3051 (inst.name, inst.primary_node, msg))
3052 self.proc.LogWarning(msg)
3054 _ShutdownInstanceDisks(self, inst)
3057 class LURemoveInstance(LogicalUnit):
3058 """Remove an instance.
3061 HPATH = "instance-remove"
3062 HTYPE = constants.HTYPE_INSTANCE
3063 _OP_REQP = ["instance_name", "ignore_failures"]
3066 def ExpandNames(self):
3067 self._ExpandAndLockInstance()
3068 self.needed_locks[locking.LEVEL_NODE] = []
3069 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3071 def DeclareLocks(self, level):
3072 if level == locking.LEVEL_NODE:
3073 self._LockInstancesNodes()
3075 def BuildHooksEnv(self):
3078 This runs on master, primary and secondary nodes of the instance.
3081 env = _BuildInstanceHookEnvByObject(self, self.instance)
3082 nl = [self.cfg.GetMasterNode()]
3085 def CheckPrereq(self):
3086 """Check prerequisites.
3088 This checks that the instance is in the cluster.
3091 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3092 assert self.instance is not None, \
3093 "Cannot retrieve locked instance %s" % self.op.instance_name
3095 def Exec(self, feedback_fn):
3096 """Remove the instance.
3099 instance = self.instance
3100 logging.info("Shutting down instance %s on node %s",
3101 instance.name, instance.primary_node)
3103 result = self.rpc.call_instance_shutdown(instance.primary_node, instance)
3104 if result.failed or not result.data:
3105 if self.op.ignore_failures:
3106 feedback_fn("Warning: can't shutdown instance")
3108 raise errors.OpExecError("Could not shutdown instance %s on node %s" %
3109 (instance.name, instance.primary_node))
3111 logging.info("Removing block devices for instance %s", instance.name)
3113 if not _RemoveDisks(self, instance):
3114 if self.op.ignore_failures:
3115 feedback_fn("Warning: can't remove instance's disks")
3117 raise errors.OpExecError("Can't remove instance's disks")
3119 logging.info("Removing instance %s out of cluster config", instance.name)
3121 self.cfg.RemoveInstance(instance.name)
3122 self.remove_locks[locking.LEVEL_INSTANCE] = instance.name
3125 class LUQueryInstances(NoHooksLU):
3126 """Logical unit for querying instances.
3129 _OP_REQP = ["output_fields", "names", "use_locking"]
3131 _FIELDS_STATIC = utils.FieldSet(*["name", "os", "pnode", "snodes",
3132 "admin_state", "admin_ram",
3133 "disk_template", "ip", "mac", "bridge",
3134 "sda_size", "sdb_size", "vcpus", "tags",
3135 "network_port", "beparams",
3136 "(disk).(size)/([0-9]+)",
3137 "(disk).(sizes)", "disk_usage",
3138 "(nic).(mac|ip|bridge)/([0-9]+)",
3139 "(nic).(macs|ips|bridges)",
3140 "(disk|nic).(count)",
3141 "serial_no", "hypervisor", "hvparams",] +
3143 for name in constants.HVS_PARAMETERS] +
3145 for name in constants.BES_PARAMETERS])
3146 _FIELDS_DYNAMIC = utils.FieldSet("oper_state", "oper_ram", "status")
3149 def ExpandNames(self):
3150 _CheckOutputFields(static=self._FIELDS_STATIC,
3151 dynamic=self._FIELDS_DYNAMIC,
3152 selected=self.op.output_fields)
3154 self.needed_locks = {}
3155 self.share_locks[locking.LEVEL_INSTANCE] = 1
3156 self.share_locks[locking.LEVEL_NODE] = 1
3159 self.wanted = _GetWantedInstances(self, self.op.names)
3161 self.wanted = locking.ALL_SET
3163 self.do_node_query = self._FIELDS_STATIC.NonMatching(self.op.output_fields)
3164 self.do_locking = self.do_node_query and self.op.use_locking
3166 self.needed_locks[locking.LEVEL_INSTANCE] = self.wanted
3167 self.needed_locks[locking.LEVEL_NODE] = []
3168 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3170 def DeclareLocks(self, level):
3171 if level == locking.LEVEL_NODE and self.do_locking:
3172 self._LockInstancesNodes()
3174 def CheckPrereq(self):
3175 """Check prerequisites.
3180 def Exec(self, feedback_fn):
3181 """Computes the list of nodes and their attributes.
3184 all_info = self.cfg.GetAllInstancesInfo()
3185 if self.wanted == locking.ALL_SET:
3186 # caller didn't specify instance names, so ordering is not important
3188 instance_names = self.acquired_locks[locking.LEVEL_INSTANCE]
3190 instance_names = all_info.keys()
3191 instance_names = utils.NiceSort(instance_names)
3193 # caller did specify names, so we must keep the ordering
3195 tgt_set = self.acquired_locks[locking.LEVEL_INSTANCE]
3197 tgt_set = all_info.keys()
3198 missing = set(self.wanted).difference(tgt_set)
3200 raise errors.OpExecError("Some instances were removed before"
3201 " retrieving their data: %s" % missing)
3202 instance_names = self.wanted
3204 instance_list = [all_info[iname] for iname in instance_names]
3206 # begin data gathering
3208 nodes = frozenset([inst.primary_node for inst in instance_list])
3209 hv_list = list(set([inst.hypervisor for inst in instance_list]))
3213 if self.do_node_query:
3215 node_data = self.rpc.call_all_instances_info(nodes, hv_list)
3217 result = node_data[name]
3219 # offline nodes will be in both lists
3220 off_nodes.append(name)
3222 bad_nodes.append(name)
3225 live_data.update(result.data)
3226 # else no instance is alive
3228 live_data = dict([(name, {}) for name in instance_names])
3230 # end data gathering
3235 for instance in instance_list:
3237 i_hv = self.cfg.GetClusterInfo().FillHV(instance)
3238 i_be = self.cfg.GetClusterInfo().FillBE(instance)
3239 for field in self.op.output_fields:
3240 st_match = self._FIELDS_STATIC.Matches(field)
3245 elif field == "pnode":
3246 val = instance.primary_node
3247 elif field == "snodes":
3248 val = list(instance.secondary_nodes)
3249 elif field == "admin_state":
3250 val = instance.admin_up
3251 elif field == "oper_state":
3252 if instance.primary_node in bad_nodes:
3255 val = bool(live_data.get(instance.name))
3256 elif field == "status":
3257 if instance.primary_node in off_nodes:
3258 val = "ERROR_nodeoffline"
3259 elif instance.primary_node in bad_nodes:
3260 val = "ERROR_nodedown"
3262 running = bool(live_data.get(instance.name))
3264 if instance.admin_up:
3269 if instance.admin_up:
3273 elif field == "oper_ram":
3274 if instance.primary_node in bad_nodes:
3276 elif instance.name in live_data:
3277 val = live_data[instance.name].get("memory", "?")
3280 elif field == "disk_template":
3281 val = instance.disk_template
3283 val = instance.nics[0].ip
3284 elif field == "bridge":
3285 val = instance.nics[0].bridge
3286 elif field == "mac":
3287 val = instance.nics[0].mac
3288 elif field == "sda_size" or field == "sdb_size":
3289 idx = ord(field[2]) - ord('a')
3291 val = instance.FindDisk(idx).size
3292 except errors.OpPrereqError:
3294 elif field == "disk_usage": # total disk usage per node
3295 disk_sizes = [{'size': disk.size} for disk in instance.disks]
3296 val = _ComputeDiskSize(instance.disk_template, disk_sizes)
3297 elif field == "tags":
3298 val = list(instance.GetTags())
3299 elif field == "serial_no":
3300 val = instance.serial_no
3301 elif field == "network_port":
3302 val = instance.network_port
3303 elif field == "hypervisor":
3304 val = instance.hypervisor
3305 elif field == "hvparams":
3307 elif (field.startswith(HVPREFIX) and
3308 field[len(HVPREFIX):] in constants.HVS_PARAMETERS):
3309 val = i_hv.get(field[len(HVPREFIX):], None)
3310 elif field == "beparams":
3312 elif (field.startswith(BEPREFIX) and
3313 field[len(BEPREFIX):] in constants.BES_PARAMETERS):
3314 val = i_be.get(field[len(BEPREFIX):], None)
3315 elif st_match and st_match.groups():
3316 # matches a variable list
3317 st_groups = st_match.groups()
3318 if st_groups and st_groups[0] == "disk":
3319 if st_groups[1] == "count":
3320 val = len(instance.disks)
3321 elif st_groups[1] == "sizes":
3322 val = [disk.size for disk in instance.disks]
3323 elif st_groups[1] == "size":
3325 val = instance.FindDisk(st_groups[2]).size
3326 except errors.OpPrereqError:
3329 assert False, "Unhandled disk parameter"
3330 elif st_groups[0] == "nic":
3331 if st_groups[1] == "count":
3332 val = len(instance.nics)
3333 elif st_groups[1] == "macs":
3334 val = [nic.mac for nic in instance.nics]
3335 elif st_groups[1] == "ips":
3336 val = [nic.ip for nic in instance.nics]
3337 elif st_groups[1] == "bridges":
3338 val = [nic.bridge for nic in instance.nics]
3341 nic_idx = int(st_groups[2])
3342 if nic_idx >= len(instance.nics):
3345 if st_groups[1] == "mac":
3346 val = instance.nics[nic_idx].mac
3347 elif st_groups[1] == "ip":
3348 val = instance.nics[nic_idx].ip
3349 elif st_groups[1] == "bridge":
3350 val = instance.nics[nic_idx].bridge
3352 assert False, "Unhandled NIC parameter"
3354 assert False, "Unhandled variable parameter"
3356 raise errors.ParameterError(field)
3363 class LUFailoverInstance(LogicalUnit):
3364 """Failover an instance.
3367 HPATH = "instance-failover"
3368 HTYPE = constants.HTYPE_INSTANCE
3369 _OP_REQP = ["instance_name", "ignore_consistency"]
3372 def ExpandNames(self):
3373 self._ExpandAndLockInstance()
3374 self.needed_locks[locking.LEVEL_NODE] = []
3375 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3377 def DeclareLocks(self, level):
3378 if level == locking.LEVEL_NODE:
3379 self._LockInstancesNodes()
3381 def BuildHooksEnv(self):
3384 This runs on master, primary and secondary nodes of the instance.
3388 "IGNORE_CONSISTENCY": self.op.ignore_consistency,
3390 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
3391 nl = [self.cfg.GetMasterNode()] + list(self.instance.secondary_nodes)
3394 def CheckPrereq(self):
3395 """Check prerequisites.
3397 This checks that the instance is in the cluster.
3400 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3401 assert self.instance is not None, \
3402 "Cannot retrieve locked instance %s" % self.op.instance_name
3404 bep = self.cfg.GetClusterInfo().FillBE(instance)
3405 if instance.disk_template not in constants.DTS_NET_MIRROR:
3406 raise errors.OpPrereqError("Instance's disk layout is not"
3407 " network mirrored, cannot failover.")
3409 secondary_nodes = instance.secondary_nodes
3410 if not secondary_nodes:
3411 raise errors.ProgrammerError("no secondary node but using "
3412 "a mirrored disk template")
3414 target_node = secondary_nodes[0]
3415 _CheckNodeOnline(self, target_node)
3416 _CheckNodeNotDrained(self, target_node)
3417 # check memory requirements on the secondary node
3418 _CheckNodeFreeMemory(self, target_node, "failing over instance %s" %
3419 instance.name, bep[constants.BE_MEMORY],
3420 instance.hypervisor)
3422 # check bridge existance
3423 brlist = [nic.bridge for nic in instance.nics]
3424 result = self.rpc.call_bridges_exist(target_node, brlist)
3427 raise errors.OpPrereqError("One or more target bridges %s does not"
3428 " exist on destination node '%s'" %
3429 (brlist, target_node))
3431 def Exec(self, feedback_fn):
3432 """Failover an instance.
3434 The failover is done by shutting it down on its present node and
3435 starting it on the secondary.
3438 instance = self.instance
3440 source_node = instance.primary_node
3441 target_node = instance.secondary_nodes[0]
3443 feedback_fn("* checking disk consistency between source and target")
3444 for dev in instance.disks:
3445 # for drbd, these are drbd over lvm
3446 if not _CheckDiskConsistency(self, dev, target_node, False):
3447 if instance.admin_up and not self.op.ignore_consistency:
3448 raise errors.OpExecError("Disk %s is degraded on target node,"
3449 " aborting failover." % dev.iv_name)
3451 feedback_fn("* shutting down instance on source node")
3452 logging.info("Shutting down instance %s on node %s",
3453 instance.name, source_node)
3455 result = self.rpc.call_instance_shutdown(source_node, instance)
3456 if result.failed or not result.data:
3457 if self.op.ignore_consistency:
3458 self.proc.LogWarning("Could not shutdown instance %s on node %s."
3460 " anyway. Please make sure node %s is down",
3461 instance.name, source_node, source_node)
3463 raise errors.OpExecError("Could not shutdown instance %s on node %s" %
3464 (instance.name, source_node))
3466 feedback_fn("* deactivating the instance's disks on source node")
3467 if not _ShutdownInstanceDisks(self, instance, ignore_primary=True):
3468 raise errors.OpExecError("Can't shut down the instance's disks.")
3470 instance.primary_node = target_node
3471 # distribute new instance config to the other nodes
3472 self.cfg.Update(instance)
3474 # Only start the instance if it's marked as up
3475 if instance.admin_up:
3476 feedback_fn("* activating the instance's disks on target node")
3477 logging.info("Starting instance %s on node %s",
3478 instance.name, target_node)
3480 disks_ok, dummy = _AssembleInstanceDisks(self, instance,
3481 ignore_secondaries=True)
3483 _ShutdownInstanceDisks(self, instance)
3484 raise errors.OpExecError("Can't activate the instance's disks")
3486 feedback_fn("* starting the instance on the target node")
3487 result = self.rpc.call_instance_start(target_node, instance, None)
3488 msg = result.RemoteFailMsg()
3490 _ShutdownInstanceDisks(self, instance)
3491 raise errors.OpExecError("Could not start instance %s on node %s: %s" %
3492 (instance.name, target_node, msg))
3495 class LUMigrateInstance(LogicalUnit):
3496 """Migrate an instance.
3498 This is migration without shutting down, compared to the failover,
3499 which is done with shutdown.
3502 HPATH = "instance-migrate"
3503 HTYPE = constants.HTYPE_INSTANCE
3504 _OP_REQP = ["instance_name", "live", "cleanup"]
3508 def ExpandNames(self):
3509 self._ExpandAndLockInstance()
3510 self.needed_locks[locking.LEVEL_NODE] = []
3511 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3513 def DeclareLocks(self, level):
3514 if level == locking.LEVEL_NODE:
3515 self._LockInstancesNodes()
3517 def BuildHooksEnv(self):
3520 This runs on master, primary and secondary nodes of the instance.
3523 env = _BuildInstanceHookEnvByObject(self, self.instance)
3524 nl = [self.cfg.GetMasterNode()] + list(self.instance.secondary_nodes)
3527 def CheckPrereq(self):
3528 """Check prerequisites.
3530 This checks that the instance is in the cluster.
3533 instance = self.cfg.GetInstanceInfo(
3534 self.cfg.ExpandInstanceName(self.op.instance_name))
3535 if instance is None:
3536 raise errors.OpPrereqError("Instance '%s' not known" %
3537 self.op.instance_name)
3539 if instance.disk_template != constants.DT_DRBD8:
3540 raise errors.OpPrereqError("Instance's disk layout is not"
3541 " drbd8, cannot migrate.")
3543 secondary_nodes = instance.secondary_nodes
3544 if not secondary_nodes:
3545 raise errors.ConfigurationError("No secondary node but using"
3546 " drbd8 disk template")
3548 i_be = self.cfg.GetClusterInfo().FillBE(instance)
3550 target_node = secondary_nodes[0]
3551 # check memory requirements on the secondary node
3552 _CheckNodeFreeMemory(self, target_node, "migrating instance %s" %
3553 instance.name, i_be[constants.BE_MEMORY],
3554 instance.hypervisor)
3556 # check bridge existance
3557 brlist = [nic.bridge for nic in instance.nics]
3558 result = self.rpc.call_bridges_exist(target_node, brlist)
3559 if result.failed or not result.data:
3560 raise errors.OpPrereqError("One or more target bridges %s does not"
3561 " exist on destination node '%s'" %
3562 (brlist, target_node))
3564 if not self.op.cleanup:
3565 _CheckNodeNotDrained(self, target_node)
3566 result = self.rpc.call_instance_migratable(instance.primary_node,
3568 msg = result.RemoteFailMsg()
3570 raise errors.OpPrereqError("Can't migrate: %s - please use failover" %
3573 self.instance = instance
3575 def _WaitUntilSync(self):
3576 """Poll with custom rpc for disk sync.
3578 This uses our own step-based rpc call.
3581 self.feedback_fn("* wait until resync is done")
3585 result = self.rpc.call_drbd_wait_sync(self.all_nodes,
3587 self.instance.disks)
3589 for node, nres in result.items():
3590 msg = nres.RemoteFailMsg()
3592 raise errors.OpExecError("Cannot resync disks on node %s: %s" %
3594 node_done, node_percent = nres.payload
3595 all_done = all_done and node_done
3596 if node_percent is not None:
3597 min_percent = min(min_percent, node_percent)
3599 if min_percent < 100:
3600 self.feedback_fn(" - progress: %.1f%%" % min_percent)
3603 def _EnsureSecondary(self, node):
3604 """Demote a node to secondary.
3607 self.feedback_fn("* switching node %s to secondary mode" % node)
3609 for dev in self.instance.disks:
3610 self.cfg.SetDiskID(dev, node)
3612 result = self.rpc.call_blockdev_close(node, self.instance.name,
3613 self.instance.disks)
3614 msg = result.RemoteFailMsg()
3616 raise errors.OpExecError("Cannot change disk to secondary on node %s,"
3617 " error %s" % (node, msg))
3619 def _GoStandalone(self):
3620 """Disconnect from the network.
3623 self.feedback_fn("* changing into standalone mode")
3624 result = self.rpc.call_drbd_disconnect_net(self.all_nodes, self.nodes_ip,
3625 self.instance.disks)
3626 for node, nres in result.items():
3627 msg = nres.RemoteFailMsg()
3629 raise errors.OpExecError("Cannot disconnect disks node %s,"
3630 " error %s" % (node, msg))
3632 def _GoReconnect(self, multimaster):
3633 """Reconnect to the network.
3639 msg = "single-master"
3640 self.feedback_fn("* changing disks into %s mode" % msg)
3641 result = self.rpc.call_drbd_attach_net(self.all_nodes, self.nodes_ip,
3642 self.instance.disks,
3643 self.instance.name, multimaster)
3644 for node, nres in result.items():
3645 msg = nres.RemoteFailMsg()
3647 raise errors.OpExecError("Cannot change disks config on node %s,"
3648 " error: %s" % (node, msg))
3650 def _ExecCleanup(self):
3651 """Try to cleanup after a failed migration.
3653 The cleanup is done by:
3654 - check that the instance is running only on one node
3655 (and update the config if needed)
3656 - change disks on its secondary node to secondary
3657 - wait until disks are fully synchronized
3658 - disconnect from the network
3659 - change disks into single-master mode
3660 - wait again until disks are fully synchronized
3663 instance = self.instance
3664 target_node = self.target_node
3665 source_node = self.source_node
3667 # check running on only one node
3668 self.feedback_fn("* checking where the instance actually runs"
3669 " (if this hangs, the hypervisor might be in"
3671 ins_l = self.rpc.call_instance_list(self.all_nodes, [instance.hypervisor])
3672 for node, result in ins_l.items():
3674 if not isinstance(result.data, list):
3675 raise errors.OpExecError("Can't contact node '%s'" % node)
3677 runningon_source = instance.name in ins_l[source_node].data
3678 runningon_target = instance.name in ins_l[target_node].data
3680 if runningon_source and runningon_target:
3681 raise errors.OpExecError("Instance seems to be running on two nodes,"
3682 " or the hypervisor is confused. You will have"
3683 " to ensure manually that it runs only on one"
3684 " and restart this operation.")
3686 if not (runningon_source or runningon_target):
3687 raise errors.OpExecError("Instance does not seem to be running at all."
3688 " In this case, it's safer to repair by"
3689 " running 'gnt-instance stop' to ensure disk"
3690 " shutdown, and then restarting it.")
3692 if runningon_target:
3693 # the migration has actually succeeded, we need to update the config
3694 self.feedback_fn("* instance running on secondary node (%s),"
3695 " updating config" % target_node)
3696 instance.primary_node = target_node
3697 self.cfg.Update(instance)
3698 demoted_node = source_node
3700 self.feedback_fn("* instance confirmed to be running on its"
3701 " primary node (%s)" % source_node)
3702 demoted_node = target_node
3704 self._EnsureSecondary(demoted_node)
3706 self._WaitUntilSync()
3707 except errors.OpExecError:
3708 # we ignore here errors, since if the device is standalone, it
3709 # won't be able to sync
3711 self._GoStandalone()
3712 self._GoReconnect(False)
3713 self._WaitUntilSync()
3715 self.feedback_fn("* done")
3717 def _RevertDiskStatus(self):
3718 """Try to revert the disk status after a failed migration.
3721 target_node = self.target_node
3723 self._EnsureSecondary(target_node)
3724 self._GoStandalone()
3725 self._GoReconnect(False)
3726 self._WaitUntilSync()
3727 except errors.OpExecError, err:
3728 self.LogWarning("Migration failed and I can't reconnect the"
3729 " drives: error '%s'\n"
3730 "Please look and recover the instance status" %
3733 def _AbortMigration(self):
3734 """Call the hypervisor code to abort a started migration.
3737 instance = self.instance
3738 target_node = self.target_node
3739 migration_info = self.migration_info
3741 abort_result = self.rpc.call_finalize_migration(target_node,
3745 abort_msg = abort_result.RemoteFailMsg()
3747 logging.error("Aborting migration failed on target node %s: %s" %
3748 (target_node, abort_msg))
3749 # Don't raise an exception here, as we stil have to try to revert the
3750 # disk status, even if this step failed.
3752 def _ExecMigration(self):
3753 """Migrate an instance.
3755 The migrate is done by:
3756 - change the disks into dual-master mode
3757 - wait until disks are fully synchronized again
3758 - migrate the instance
3759 - change disks on the new secondary node (the old primary) to secondary
3760 - wait until disks are fully synchronized
3761 - change disks into single-master mode
3764 instance = self.instance
3765 target_node = self.target_node
3766 source_node = self.source_node
3768 self.feedback_fn("* checking disk consistency between source and target")
3769 for dev in instance.disks:
3770 if not _CheckDiskConsistency(self, dev, target_node, False):
3771 raise errors.OpExecError("Disk %s is degraded or not fully"
3772 " synchronized on target node,"
3773 " aborting migrate." % dev.iv_name)
3775 # First get the migration information from the remote node
3776 result = self.rpc.call_migration_info(source_node, instance)
3777 msg = result.RemoteFailMsg()
3779 log_err = ("Failed fetching source migration information from %s: %s" %
3781 logging.error(log_err)
3782 raise errors.OpExecError(log_err)
3784 self.migration_info = migration_info = result.payload
3786 # Then switch the disks to master/master mode
3787 self._EnsureSecondary(target_node)
3788 self._GoStandalone()
3789 self._GoReconnect(True)
3790 self._WaitUntilSync()
3792 self.feedback_fn("* preparing %s to accept the instance" % target_node)
3793 result = self.rpc.call_accept_instance(target_node,
3796 self.nodes_ip[target_node])
3798 msg = result.RemoteFailMsg()
3800 logging.error("Instance pre-migration failed, trying to revert"
3801 " disk status: %s", msg)
3802 self._AbortMigration()
3803 self._RevertDiskStatus()
3804 raise errors.OpExecError("Could not pre-migrate instance %s: %s" %
3805 (instance.name, msg))
3807 self.feedback_fn("* migrating instance to %s" % target_node)
3809 result = self.rpc.call_instance_migrate(source_node, instance,
3810 self.nodes_ip[target_node],
3812 msg = result.RemoteFailMsg()
3814 logging.error("Instance migration failed, trying to revert"
3815 " disk status: %s", msg)
3816 self._AbortMigration()
3817 self._RevertDiskStatus()
3818 raise errors.OpExecError("Could not migrate instance %s: %s" %
3819 (instance.name, msg))
3822 instance.primary_node = target_node
3823 # distribute new instance config to the other nodes
3824 self.cfg.Update(instance)
3826 result = self.rpc.call_finalize_migration(target_node,
3830 msg = result.RemoteFailMsg()
3832 logging.error("Instance migration succeeded, but finalization failed:"
3834 raise errors.OpExecError("Could not finalize instance migration: %s" %
3837 self._EnsureSecondary(source_node)
3838 self._WaitUntilSync()
3839 self._GoStandalone()
3840 self._GoReconnect(False)
3841 self._WaitUntilSync()
3843 self.feedback_fn("* done")
3845 def Exec(self, feedback_fn):
3846 """Perform the migration.
3849 self.feedback_fn = feedback_fn
3851 self.source_node = self.instance.primary_node
3852 self.target_node = self.instance.secondary_nodes[0]
3853 self.all_nodes = [self.source_node, self.target_node]
3855 self.source_node: self.cfg.GetNodeInfo(self.source_node).secondary_ip,
3856 self.target_node: self.cfg.GetNodeInfo(self.target_node).secondary_ip,
3859 return self._ExecCleanup()
3861 return self._ExecMigration()
3864 def _CreateBlockDev(lu, node, instance, device, force_create,
3866 """Create a tree of block devices on a given node.
3868 If this device type has to be created on secondaries, create it and
3871 If not, just recurse to children keeping the same 'force' value.
3873 @param lu: the lu on whose behalf we execute
3874 @param node: the node on which to create the device
3875 @type instance: L{objects.Instance}
3876 @param instance: the instance which owns the device
3877 @type device: L{objects.Disk}
3878 @param device: the device to create
3879 @type force_create: boolean
3880 @param force_create: whether to force creation of this device; this
3881 will be change to True whenever we find a device which has
3882 CreateOnSecondary() attribute
3883 @param info: the extra 'metadata' we should attach to the device
3884 (this will be represented as a LVM tag)
3885 @type force_open: boolean
3886 @param force_open: this parameter will be passes to the
3887 L{backend.BlockdevCreate} function where it specifies
3888 whether we run on primary or not, and it affects both
3889 the child assembly and the device own Open() execution
3892 if device.CreateOnSecondary():
3896 for child in device.children:
3897 _CreateBlockDev(lu, node, instance, child, force_create,
3900 if not force_create:
3903 _CreateSingleBlockDev(lu, node, instance, device, info, force_open)
3906 def _CreateSingleBlockDev(lu, node, instance, device, info, force_open):
3907 """Create a single block device on a given node.
3909 This will not recurse over children of the device, so they must be
3912 @param lu: the lu on whose behalf we execute
3913 @param node: the node on which to create the device
3914 @type instance: L{objects.Instance}
3915 @param instance: the instance which owns the device
3916 @type device: L{objects.Disk}
3917 @param device: the device to create
3918 @param info: the extra 'metadata' we should attach to the device
3919 (this will be represented as a LVM tag)
3920 @type force_open: boolean
3921 @param force_open: this parameter will be passes to the
3922 L{backend.BlockdevCreate} function where it specifies
3923 whether we run on primary or not, and it affects both
3924 the child assembly and the device own Open() execution
3927 lu.cfg.SetDiskID(device, node)
3928 result = lu.rpc.call_blockdev_create(node, device, device.size,
3929 instance.name, force_open, info)
3930 msg = result.RemoteFailMsg()
3932 raise errors.OpExecError("Can't create block device %s on"
3933 " node %s for instance %s: %s" %
3934 (device, node, instance.name, msg))
3935 if device.physical_id is None:
3936 device.physical_id = result.payload
3939 def _GenerateUniqueNames(lu, exts):
3940 """Generate a suitable LV name.
3942 This will generate a logical volume name for the given instance.
3947 new_id = lu.cfg.GenerateUniqueID()
3948 results.append("%s%s" % (new_id, val))
3952 def _GenerateDRBD8Branch(lu, primary, secondary, size, names, iv_name,
3954 """Generate a drbd8 device complete with its children.
3957 port = lu.cfg.AllocatePort()
3958 vgname = lu.cfg.GetVGName()
3959 shared_secret = lu.cfg.GenerateDRBDSecret()
3960 dev_data = objects.Disk(dev_type=constants.LD_LV, size=size,
3961 logical_id=(vgname, names[0]))
3962 dev_meta = objects.Disk(dev_type=constants.LD_LV, size=128,
3963 logical_id=(vgname, names[1]))
3964 drbd_dev = objects.Disk(dev_type=constants.LD_DRBD8, size=size,
3965 logical_id=(primary, secondary, port,
3968 children=[dev_data, dev_meta],
3973 def _GenerateDiskTemplate(lu, template_name,
3974 instance_name, primary_node,
3975 secondary_nodes, disk_info,
3976 file_storage_dir, file_driver,
3978 """Generate the entire disk layout for a given template type.
3981 #TODO: compute space requirements
3983 vgname = lu.cfg.GetVGName()
3984 disk_count = len(disk_info)
3986 if template_name == constants.DT_DISKLESS:
3988 elif template_name == constants.DT_PLAIN:
3989 if len(secondary_nodes) != 0:
3990 raise errors.ProgrammerError("Wrong template configuration")
3992 names = _GenerateUniqueNames(lu, [".disk%d" % i
3993 for i in range(disk_count)])
3994 for idx, disk in enumerate(disk_info):
3995 disk_index = idx + base_index
3996 disk_dev = objects.Disk(dev_type=constants.LD_LV, size=disk["size"],
3997 logical_id=(vgname, names[idx]),
3998 iv_name="disk/%d" % disk_index,
4000 disks.append(disk_dev)
4001 elif template_name == constants.DT_DRBD8:
4002 if len(secondary_nodes) != 1:
4003 raise errors.ProgrammerError("Wrong template configuration")
4004 remote_node = secondary_nodes[0]
4005 minors = lu.cfg.AllocateDRBDMinor(
4006 [primary_node, remote_node] * len(disk_info), instance_name)
4009 for lv_prefix in _GenerateUniqueNames(lu, [".disk%d" % i
4010 for i in range(disk_count)]):
4011 names.append(lv_prefix + "_data")
4012 names.append(lv_prefix + "_meta")
4013 for idx, disk in enumerate(disk_info):
4014 disk_index = idx + base_index
4015 disk_dev = _GenerateDRBD8Branch(lu, primary_node, remote_node,
4016 disk["size"], names[idx*2:idx*2+2],
4017 "disk/%d" % disk_index,
4018 minors[idx*2], minors[idx*2+1])
4019 disk_dev.mode = disk["mode"]
4020 disks.append(disk_dev)
4021 elif template_name == constants.DT_FILE:
4022 if len(secondary_nodes) != 0:
4023 raise errors.ProgrammerError("Wrong template configuration")
4025 for idx, disk in enumerate(disk_info):
4026 disk_index = idx + base_index
4027 disk_dev = objects.Disk(dev_type=constants.LD_FILE, size=disk["size"],
4028 iv_name="disk/%d" % disk_index,
4029 logical_id=(file_driver,
4030 "%s/disk%d" % (file_storage_dir,
4033 disks.append(disk_dev)
4035 raise errors.ProgrammerError("Invalid disk template '%s'" % template_name)
4039 def _GetInstanceInfoText(instance):
4040 """Compute that text that should be added to the disk's metadata.
4043 return "originstname+%s" % instance.name
4046 def _CreateDisks(lu, instance):
4047 """Create all disks for an instance.
4049 This abstracts away some work from AddInstance.
4051 @type lu: L{LogicalUnit}
4052 @param lu: the logical unit on whose behalf we execute
4053 @type instance: L{objects.Instance}
4054 @param instance: the instance whose disks we should create
4056 @return: the success of the creation
4059 info = _GetInstanceInfoText(instance)
4060 pnode = instance.primary_node
4062 if instance.disk_template == constants.DT_FILE:
4063 file_storage_dir = os.path.dirname(instance.disks[0].logical_id[1])
4064 result = lu.rpc.call_file_storage_dir_create(pnode, file_storage_dir)
4066 if result.failed or not result.data:
4067 raise errors.OpExecError("Could not connect to node '%s'" % pnode)
4069 if not result.data[0]:
4070 raise errors.OpExecError("Failed to create directory '%s'" %
4073 # Note: this needs to be kept in sync with adding of disks in
4074 # LUSetInstanceParams
4075 for device in instance.disks:
4076 logging.info("Creating volume %s for instance %s",
4077 device.iv_name, instance.name)
4079 for node in instance.all_nodes:
4080 f_create = node == pnode
4081 _CreateBlockDev(lu, node, instance, device, f_create, info, f_create)
4084 def _RemoveDisks(lu, instance):
4085 """Remove all disks for an instance.
4087 This abstracts away some work from `AddInstance()` and
4088 `RemoveInstance()`. Note that in case some of the devices couldn't
4089 be removed, the removal will continue with the other ones (compare
4090 with `_CreateDisks()`).
4092 @type lu: L{LogicalUnit}
4093 @param lu: the logical unit on whose behalf we execute
4094 @type instance: L{objects.Instance}
4095 @param instance: the instance whose disks we should remove
4097 @return: the success of the removal
4100 logging.info("Removing block devices for instance %s", instance.name)
4103 for device in instance.disks:
4104 for node, disk in device.ComputeNodeTree(instance.primary_node):
4105 lu.cfg.SetDiskID(disk, node)
4106 msg = lu.rpc.call_blockdev_remove(node, disk).RemoteFailMsg()
4108 lu.LogWarning("Could not remove block device %s on node %s,"
4109 " continuing anyway: %s", device.iv_name, node, msg)
4112 if instance.disk_template == constants.DT_FILE:
4113 file_storage_dir = os.path.dirname(instance.disks[0].logical_id[1])
4114 result = lu.rpc.call_file_storage_dir_remove(instance.primary_node,
4116 if result.failed or not result.data:
4117 logging.error("Could not remove directory '%s'", file_storage_dir)
4123 def _ComputeDiskSize(disk_template, disks):
4124 """Compute disk size requirements in the volume group
4127 # Required free disk space as a function of disk and swap space
4129 constants.DT_DISKLESS: None,
4130 constants.DT_PLAIN: sum(d["size"] for d in disks),
4131 # 128 MB are added for drbd metadata for each disk
4132 constants.DT_DRBD8: sum(d["size"] + 128 for d in disks),
4133 constants.DT_FILE: None,
4136 if disk_template not in req_size_dict:
4137 raise errors.ProgrammerError("Disk template '%s' size requirement"
4138 " is unknown" % disk_template)
4140 return req_size_dict[disk_template]
4143 def _CheckHVParams(lu, nodenames, hvname, hvparams):
4144 """Hypervisor parameter validation.
4146 This function abstract the hypervisor parameter validation to be
4147 used in both instance create and instance modify.
4149 @type lu: L{LogicalUnit}
4150 @param lu: the logical unit for which we check
4151 @type nodenames: list
4152 @param nodenames: the list of nodes on which we should check
4153 @type hvname: string
4154 @param hvname: the name of the hypervisor we should use
4155 @type hvparams: dict
4156 @param hvparams: the parameters which we need to check
4157 @raise errors.OpPrereqError: if the parameters are not valid
4160 hvinfo = lu.rpc.call_hypervisor_validate_params(nodenames,
4163 for node in nodenames:
4167 msg = info.RemoteFailMsg()
4169 raise errors.OpPrereqError("Hypervisor parameter validation failed:"
4173 class LUCreateInstance(LogicalUnit):
4174 """Create an instance.
4177 HPATH = "instance-add"
4178 HTYPE = constants.HTYPE_INSTANCE
4179 _OP_REQP = ["instance_name", "disks", "disk_template",
4181 "wait_for_sync", "ip_check", "nics",
4182 "hvparams", "beparams"]
4185 def _ExpandNode(self, node):
4186 """Expands and checks one node name.
4189 node_full = self.cfg.ExpandNodeName(node)
4190 if node_full is None:
4191 raise errors.OpPrereqError("Unknown node %s" % node)
4194 def ExpandNames(self):
4195 """ExpandNames for CreateInstance.
4197 Figure out the right locks for instance creation.
4200 self.needed_locks = {}
4202 # set optional parameters to none if they don't exist
4203 for attr in ["pnode", "snode", "iallocator", "hypervisor"]:
4204 if not hasattr(self.op, attr):
4205 setattr(self.op, attr, None)
4207 # cheap checks, mostly valid constants given
4209 # verify creation mode
4210 if self.op.mode not in (constants.INSTANCE_CREATE,
4211 constants.INSTANCE_IMPORT):
4212 raise errors.OpPrereqError("Invalid instance creation mode '%s'" %
4215 # disk template and mirror node verification
4216 if self.op.disk_template not in constants.DISK_TEMPLATES:
4217 raise errors.OpPrereqError("Invalid disk template name")
4219 if self.op.hypervisor is None:
4220 self.op.hypervisor = self.cfg.GetHypervisorType()
4222 cluster = self.cfg.GetClusterInfo()
4223 enabled_hvs = cluster.enabled_hypervisors
4224 if self.op.hypervisor not in enabled_hvs:
4225 raise errors.OpPrereqError("Selected hypervisor (%s) not enabled in the"
4226 " cluster (%s)" % (self.op.hypervisor,
4227 ",".join(enabled_hvs)))
4229 # check hypervisor parameter syntax (locally)
4230 utils.ForceDictType(self.op.hvparams, constants.HVS_PARAMETER_TYPES)
4231 filled_hvp = cluster.FillDict(cluster.hvparams[self.op.hypervisor],
4233 hv_type = hypervisor.GetHypervisor(self.op.hypervisor)
4234 hv_type.CheckParameterSyntax(filled_hvp)
4236 # fill and remember the beparams dict
4237 utils.ForceDictType(self.op.beparams, constants.BES_PARAMETER_TYPES)
4238 self.be_full = cluster.FillDict(cluster.beparams[constants.BEGR_DEFAULT],
4241 #### instance parameters check
4243 # instance name verification
4244 hostname1 = utils.HostInfo(self.op.instance_name)
4245 self.op.instance_name = instance_name = hostname1.name
4247 # this is just a preventive check, but someone might still add this
4248 # instance in the meantime, and creation will fail at lock-add time
4249 if instance_name in self.cfg.GetInstanceList():
4250 raise errors.OpPrereqError("Instance '%s' is already in the cluster" %
4253 self.add_locks[locking.LEVEL_INSTANCE] = instance_name
4257 for nic in self.op.nics:
4258 # ip validity checks
4259 ip = nic.get("ip", None)
4260 if ip is None or ip.lower() == "none":
4262 elif ip.lower() == constants.VALUE_AUTO:
4263 nic_ip = hostname1.ip
4265 if not utils.IsValidIP(ip):
4266 raise errors.OpPrereqError("Given IP address '%s' doesn't look"
4267 " like a valid IP" % ip)
4270 # MAC address verification
4271 mac = nic.get("mac", constants.VALUE_AUTO)
4272 if mac not in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
4273 if not utils.IsValidMac(mac.lower()):
4274 raise errors.OpPrereqError("Invalid MAC address specified: %s" %
4276 # bridge verification
4277 bridge = nic.get("bridge", None)
4279 bridge = self.cfg.GetDefBridge()
4280 self.nics.append(objects.NIC(mac=mac, ip=nic_ip, bridge=bridge))
4282 # disk checks/pre-build
4284 for disk in self.op.disks:
4285 mode = disk.get("mode", constants.DISK_RDWR)
4286 if mode not in constants.DISK_ACCESS_SET:
4287 raise errors.OpPrereqError("Invalid disk access mode '%s'" %
4289 size = disk.get("size", None)
4291 raise errors.OpPrereqError("Missing disk size")
4295 raise errors.OpPrereqError("Invalid disk size '%s'" % size)
4296 self.disks.append({"size": size, "mode": mode})
4298 # used in CheckPrereq for ip ping check
4299 self.check_ip = hostname1.ip
4301 # file storage checks
4302 if (self.op.file_driver and
4303 not self.op.file_driver in constants.FILE_DRIVER):
4304 raise errors.OpPrereqError("Invalid file driver name '%s'" %
4305 self.op.file_driver)
4307 if self.op.file_storage_dir and os.path.isabs(self.op.file_storage_dir):
4308 raise errors.OpPrereqError("File storage directory path not absolute")
4310 ### Node/iallocator related checks
4311 if [self.op.iallocator, self.op.pnode].count(None) != 1:
4312 raise errors.OpPrereqError("One and only one of iallocator and primary"
4313 " node must be given")
4315 if self.op.iallocator:
4316 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
4318 self.op.pnode = self._ExpandNode(self.op.pnode)
4319 nodelist = [self.op.pnode]
4320 if self.op.snode is not None:
4321 self.op.snode = self._ExpandNode(self.op.snode)
4322 nodelist.append(self.op.snode)
4323 self.needed_locks[locking.LEVEL_NODE] = nodelist
4325 # in case of import lock the source node too
4326 if self.op.mode == constants.INSTANCE_IMPORT:
4327 src_node = getattr(self.op, "src_node", None)
4328 src_path = getattr(self.op, "src_path", None)
4330 if src_path is None:
4331 self.op.src_path = src_path = self.op.instance_name
4333 if src_node is None:
4334 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
4335 self.op.src_node = None
4336 if os.path.isabs(src_path):
4337 raise errors.OpPrereqError("Importing an instance from an absolute"
4338 " path requires a source node option.")
4340 self.op.src_node = src_node = self._ExpandNode(src_node)
4341 if self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET:
4342 self.needed_locks[locking.LEVEL_NODE].append(src_node)
4343 if not os.path.isabs(src_path):
4344 self.op.src_path = src_path = \
4345 os.path.join(constants.EXPORT_DIR, src_path)
4347 else: # INSTANCE_CREATE
4348 if getattr(self.op, "os_type", None) is None:
4349 raise errors.OpPrereqError("No guest OS specified")
4351 def _RunAllocator(self):
4352 """Run the allocator based on input opcode.
4355 nics = [n.ToDict() for n in self.nics]
4356 ial = IAllocator(self,
4357 mode=constants.IALLOCATOR_MODE_ALLOC,
4358 name=self.op.instance_name,
4359 disk_template=self.op.disk_template,
4362 vcpus=self.be_full[constants.BE_VCPUS],
4363 mem_size=self.be_full[constants.BE_MEMORY],
4366 hypervisor=self.op.hypervisor,
4369 ial.Run(self.op.iallocator)
4372 raise errors.OpPrereqError("Can't compute nodes using"
4373 " iallocator '%s': %s" % (self.op.iallocator,
4375 if len(ial.nodes) != ial.required_nodes:
4376 raise errors.OpPrereqError("iallocator '%s' returned invalid number"
4377 " of nodes (%s), required %s" %
4378 (self.op.iallocator, len(ial.nodes),
4379 ial.required_nodes))
4380 self.op.pnode = ial.nodes[0]
4381 self.LogInfo("Selected nodes for instance %s via iallocator %s: %s",
4382 self.op.instance_name, self.op.iallocator,
4383 ", ".join(ial.nodes))
4384 if ial.required_nodes == 2:
4385 self.op.snode = ial.nodes[1]
4387 def BuildHooksEnv(self):
4390 This runs on master, primary and secondary nodes of the instance.
4394 "INSTANCE_DISK_TEMPLATE": self.op.disk_template,
4395 "INSTANCE_DISK_SIZE": ",".join(str(d["size"]) for d in self.disks),
4396 "INSTANCE_ADD_MODE": self.op.mode,
4398 if self.op.mode == constants.INSTANCE_IMPORT:
4399 env["INSTANCE_SRC_NODE"] = self.op.src_node
4400 env["INSTANCE_SRC_PATH"] = self.op.src_path
4401 env["INSTANCE_SRC_IMAGES"] = self.src_images
4403 env.update(_BuildInstanceHookEnv(name=self.op.instance_name,
4404 primary_node=self.op.pnode,
4405 secondary_nodes=self.secondaries,
4406 status=self.op.start,
4407 os_type=self.op.os_type,
4408 memory=self.be_full[constants.BE_MEMORY],
4409 vcpus=self.be_full[constants.BE_VCPUS],
4410 nics=[(n.ip, n.bridge, n.mac) for n in self.nics],
4413 nl = ([self.cfg.GetMasterNode(), self.op.pnode] +
4418 def CheckPrereq(self):
4419 """Check prerequisites.
4422 if (not self.cfg.GetVGName() and
4423 self.op.disk_template not in constants.DTS_NOT_LVM):
4424 raise errors.OpPrereqError("Cluster does not support lvm-based"
4428 if self.op.mode == constants.INSTANCE_IMPORT:
4429 src_node = self.op.src_node
4430 src_path = self.op.src_path
4432 if src_node is None:
4433 exp_list = self.rpc.call_export_list(
4434 self.acquired_locks[locking.LEVEL_NODE])
4436 for node in exp_list:
4437 if not exp_list[node].failed and src_path in exp_list[node].data:
4439 self.op.src_node = src_node = node
4440 self.op.src_path = src_path = os.path.join(constants.EXPORT_DIR,
4444 raise errors.OpPrereqError("No export found for relative path %s" %
4447 _CheckNodeOnline(self, src_node)
4448 result = self.rpc.call_export_info(src_node, src_path)
4451 raise errors.OpPrereqError("No export found in dir %s" % src_path)
4453 export_info = result.data
4454 if not export_info.has_section(constants.INISECT_EXP):
4455 raise errors.ProgrammerError("Corrupted export config")
4457 ei_version = export_info.get(constants.INISECT_EXP, 'version')
4458 if (int(ei_version) != constants.EXPORT_VERSION):
4459 raise errors.OpPrereqError("Wrong export version %s (wanted %d)" %
4460 (ei_version, constants.EXPORT_VERSION))
4462 # Check that the new instance doesn't have less disks than the export
4463 instance_disks = len(self.disks)
4464 export_disks = export_info.getint(constants.INISECT_INS, 'disk_count')
4465 if instance_disks < export_disks:
4466 raise errors.OpPrereqError("Not enough disks to import."
4467 " (instance: %d, export: %d)" %
4468 (instance_disks, export_disks))
4470 self.op.os_type = export_info.get(constants.INISECT_EXP, 'os')
4472 for idx in range(export_disks):
4473 option = 'disk%d_dump' % idx
4474 if export_info.has_option(constants.INISECT_INS, option):
4475 # FIXME: are the old os-es, disk sizes, etc. useful?
4476 export_name = export_info.get(constants.INISECT_INS, option)
4477 image = os.path.join(src_path, export_name)
4478 disk_images.append(image)
4480 disk_images.append(False)
4482 self.src_images = disk_images
4484 old_name = export_info.get(constants.INISECT_INS, 'name')
4485 # FIXME: int() here could throw a ValueError on broken exports
4486 exp_nic_count = int(export_info.get(constants.INISECT_INS, 'nic_count'))
4487 if self.op.instance_name == old_name:
4488 for idx, nic in enumerate(self.nics):
4489 if nic.mac == constants.VALUE_AUTO and exp_nic_count >= idx:
4490 nic_mac_ini = 'nic%d_mac' % idx
4491 nic.mac = export_info.get(constants.INISECT_INS, nic_mac_ini)
4493 # ip ping checks (we use the same ip that was resolved in ExpandNames)
4494 if self.op.start and not self.op.ip_check:
4495 raise errors.OpPrereqError("Cannot ignore IP address conflicts when"
4496 " adding an instance in start mode")
4498 if self.op.ip_check:
4499 if utils.TcpPing(self.check_ip, constants.DEFAULT_NODED_PORT):
4500 raise errors.OpPrereqError("IP %s of instance %s already in use" %
4501 (self.check_ip, self.op.instance_name))
4505 if self.op.iallocator is not None:
4506 self._RunAllocator()
4508 #### node related checks
4510 # check primary node
4511 self.pnode = pnode = self.cfg.GetNodeInfo(self.op.pnode)
4512 assert self.pnode is not None, \
4513 "Cannot retrieve locked node %s" % self.op.pnode
4515 raise errors.OpPrereqError("Cannot use offline primary node '%s'" %
4518 raise errors.OpPrereqError("Cannot use drained primary node '%s'" %
4521 self.secondaries = []
4523 # mirror node verification
4524 if self.op.disk_template in constants.DTS_NET_MIRROR:
4525 if self.op.snode is None:
4526 raise errors.OpPrereqError("The networked disk templates need"
4528 if self.op.snode == pnode.name:
4529 raise errors.OpPrereqError("The secondary node cannot be"
4530 " the primary node.")
4531 _CheckNodeOnline(self, self.op.snode)
4532 _CheckNodeNotDrained(self, self.op.snode)
4533 self.secondaries.append(self.op.snode)
4535 nodenames = [pnode.name] + self.secondaries
4537 req_size = _ComputeDiskSize(self.op.disk_template,
4540 # Check lv size requirements
4541 if req_size is not None:
4542 nodeinfo = self.rpc.call_node_info(nodenames, self.cfg.GetVGName(),
4544 for node in nodenames:
4545 info = nodeinfo[node]
4549 raise errors.OpPrereqError("Cannot get current information"
4550 " from node '%s'" % node)
4551 vg_free = info.get('vg_free', None)
4552 if not isinstance(vg_free, int):
4553 raise errors.OpPrereqError("Can't compute free disk space on"
4555 if req_size > info['vg_free']:
4556 raise errors.OpPrereqError("Not enough disk space on target node %s."
4557 " %d MB available, %d MB required" %
4558 (node, info['vg_free'], req_size))
4560 _CheckHVParams(self, nodenames, self.op.hypervisor, self.op.hvparams)
4563 result = self.rpc.call_os_get(pnode.name, self.op.os_type)
4565 if not isinstance(result.data, objects.OS):
4566 raise errors.OpPrereqError("OS '%s' not in supported os list for"
4567 " primary node" % self.op.os_type)
4569 # bridge check on primary node
4570 bridges = [n.bridge for n in self.nics]
4571 result = self.rpc.call_bridges_exist(self.pnode.name, bridges)
4574 raise errors.OpPrereqError("One of the target bridges '%s' does not"
4575 " exist on destination node '%s'" %
4576 (",".join(bridges), pnode.name))
4578 # memory check on primary node
4580 _CheckNodeFreeMemory(self, self.pnode.name,
4581 "creating instance %s" % self.op.instance_name,
4582 self.be_full[constants.BE_MEMORY],
4585 def Exec(self, feedback_fn):
4586 """Create and add the instance to the cluster.
4589 instance = self.op.instance_name
4590 pnode_name = self.pnode.name
4592 for nic in self.nics:
4593 if nic.mac in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
4594 nic.mac = self.cfg.GenerateMAC()
4596 ht_kind = self.op.hypervisor
4597 if ht_kind in constants.HTS_REQ_PORT:
4598 network_port = self.cfg.AllocatePort()
4602 ##if self.op.vnc_bind_address is None:
4603 ## self.op.vnc_bind_address = constants.VNC_DEFAULT_BIND_ADDRESS
4605 # this is needed because os.path.join does not accept None arguments
4606 if self.op.file_storage_dir is None:
4607 string_file_storage_dir = ""
4609 string_file_storage_dir = self.op.file_storage_dir
4611 # build the full file storage dir path
4612 file_storage_dir = os.path.normpath(os.path.join(
4613 self.cfg.GetFileStorageDir(),
4614 string_file_storage_dir, instance))
4617 disks = _GenerateDiskTemplate(self,
4618 self.op.disk_template,
4619 instance, pnode_name,
4623 self.op.file_driver,
4626 iobj = objects.Instance(name=instance, os=self.op.os_type,
4627 primary_node=pnode_name,
4628 nics=self.nics, disks=disks,
4629 disk_template=self.op.disk_template,
4631 network_port=network_port,
4632 beparams=self.op.beparams,
4633 hvparams=self.op.hvparams,
4634 hypervisor=self.op.hypervisor,
4637 feedback_fn("* creating instance disks...")
4639 _CreateDisks(self, iobj)
4640 except errors.OpExecError:
4641 self.LogWarning("Device creation failed, reverting...")
4643 _RemoveDisks(self, iobj)
4645 self.cfg.ReleaseDRBDMinors(instance)
4648 feedback_fn("adding instance %s to cluster config" % instance)
4650 self.cfg.AddInstance(iobj)
4651 # Declare that we don't want to remove the instance lock anymore, as we've
4652 # added the instance to the config
4653 del self.remove_locks[locking.LEVEL_INSTANCE]
4654 # Unlock all the nodes
4655 if self.op.mode == constants.INSTANCE_IMPORT:
4656 nodes_keep = [self.op.src_node]
4657 nodes_release = [node for node in self.acquired_locks[locking.LEVEL_NODE]
4658 if node != self.op.src_node]
4659 self.context.glm.release(locking.LEVEL_NODE, nodes_release)
4660 self.acquired_locks[locking.LEVEL_NODE] = nodes_keep
4662 self.context.glm.release(locking.LEVEL_NODE)
4663 del self.acquired_locks[locking.LEVEL_NODE]
4665 if self.op.wait_for_sync:
4666 disk_abort = not _WaitForSync(self, iobj)
4667 elif iobj.disk_template in constants.DTS_NET_MIRROR:
4668 # make sure the disks are not degraded (still sync-ing is ok)
4670 feedback_fn("* checking mirrors status")
4671 disk_abort = not _WaitForSync(self, iobj, oneshot=True)
4676 _RemoveDisks(self, iobj)
4677 self.cfg.RemoveInstance(iobj.name)
4678 # Make sure the instance lock gets removed
4679 self.remove_locks[locking.LEVEL_INSTANCE] = iobj.name
4680 raise errors.OpExecError("There are some degraded disks for"
4683 feedback_fn("creating os for instance %s on node %s" %
4684 (instance, pnode_name))
4686 if iobj.disk_template != constants.DT_DISKLESS:
4687 if self.op.mode == constants.INSTANCE_CREATE:
4688 feedback_fn("* running the instance OS create scripts...")
4689 result = self.rpc.call_instance_os_add(pnode_name, iobj)
4690 msg = result.RemoteFailMsg()
4692 raise errors.OpExecError("Could not add os for instance %s"
4694 (instance, pnode_name, msg))
4696 elif self.op.mode == constants.INSTANCE_IMPORT:
4697 feedback_fn("* running the instance OS import scripts...")
4698 src_node = self.op.src_node
4699 src_images = self.src_images
4700 cluster_name = self.cfg.GetClusterName()
4701 import_result = self.rpc.call_instance_os_import(pnode_name, iobj,
4702 src_node, src_images,
4704 import_result.Raise()
4705 for idx, result in enumerate(import_result.data):
4707 self.LogWarning("Could not import the image %s for instance"
4708 " %s, disk %d, on node %s" %
4709 (src_images[idx], instance, idx, pnode_name))
4711 # also checked in the prereq part
4712 raise errors.ProgrammerError("Unknown OS initialization mode '%s'"
4716 iobj.admin_up = True
4717 self.cfg.Update(iobj)
4718 logging.info("Starting instance %s on node %s", instance, pnode_name)
4719 feedback_fn("* starting instance...")
4720 result = self.rpc.call_instance_start(pnode_name, iobj, None)
4721 msg = result.RemoteFailMsg()
4723 raise errors.OpExecError("Could not start instance: %s" % msg)
4726 class LUConnectConsole(NoHooksLU):
4727 """Connect to an instance's console.
4729 This is somewhat special in that it returns the command line that
4730 you need to run on the master node in order to connect to the
4734 _OP_REQP = ["instance_name"]
4737 def ExpandNames(self):
4738 self._ExpandAndLockInstance()
4740 def CheckPrereq(self):
4741 """Check prerequisites.
4743 This checks that the instance is in the cluster.
4746 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
4747 assert self.instance is not None, \
4748 "Cannot retrieve locked instance %s" % self.op.instance_name
4749 _CheckNodeOnline(self, self.instance.primary_node)
4751 def Exec(self, feedback_fn):
4752 """Connect to the console of an instance
4755 instance = self.instance
4756 node = instance.primary_node
4758 node_insts = self.rpc.call_instance_list([node],
4759 [instance.hypervisor])[node]
4762 if instance.name not in node_insts.data:
4763 raise errors.OpExecError("Instance %s is not running." % instance.name)
4765 logging.debug("Connecting to console of %s on %s", instance.name, node)
4767 hyper = hypervisor.GetHypervisor(instance.hypervisor)
4768 cluster = self.cfg.GetClusterInfo()
4769 # beparams and hvparams are passed separately, to avoid editing the
4770 # instance and then saving the defaults in the instance itself.
4771 hvparams = cluster.FillHV(instance)
4772 beparams = cluster.FillBE(instance)
4773 console_cmd = hyper.GetShellCommandForConsole(instance, hvparams, beparams)
4776 return self.ssh.BuildCmd(node, "root", console_cmd, batch=True, tty=True)
4779 class LUReplaceDisks(LogicalUnit):
4780 """Replace the disks of an instance.
4783 HPATH = "mirrors-replace"
4784 HTYPE = constants.HTYPE_INSTANCE
4785 _OP_REQP = ["instance_name", "mode", "disks"]
4788 def CheckArguments(self):
4789 if not hasattr(self.op, "remote_node"):
4790 self.op.remote_node = None
4791 if not hasattr(self.op, "iallocator"):
4792 self.op.iallocator = None
4794 # check for valid parameter combination
4795 cnt = [self.op.remote_node, self.op.iallocator].count(None)
4796 if self.op.mode == constants.REPLACE_DISK_CHG:
4798 raise errors.OpPrereqError("When changing the secondary either an"
4799 " iallocator script must be used or the"
4802 raise errors.OpPrereqError("Give either the iallocator or the new"
4803 " secondary, not both")
4804 else: # not replacing the secondary
4806 raise errors.OpPrereqError("The iallocator and new node options can"
4807 " be used only when changing the"
4810 def ExpandNames(self):
4811 self._ExpandAndLockInstance()
4813 if self.op.iallocator is not None:
4814 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
4815 elif self.op.remote_node is not None:
4816 remote_node = self.cfg.ExpandNodeName(self.op.remote_node)
4817 if remote_node is None:
4818 raise errors.OpPrereqError("Node '%s' not known" %
4819 self.op.remote_node)
4820 self.op.remote_node = remote_node
4821 # Warning: do not remove the locking of the new secondary here
4822 # unless DRBD8.AddChildren is changed to work in parallel;
4823 # currently it doesn't since parallel invocations of
4824 # FindUnusedMinor will conflict
4825 self.needed_locks[locking.LEVEL_NODE] = [remote_node]
4826 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_APPEND
4828 self.needed_locks[locking.LEVEL_NODE] = []
4829 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
4831 def DeclareLocks(self, level):
4832 # If we're not already locking all nodes in the set we have to declare the
4833 # instance's primary/secondary nodes.
4834 if (level == locking.LEVEL_NODE and
4835 self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET):
4836 self._LockInstancesNodes()
4838 def _RunAllocator(self):
4839 """Compute a new secondary node using an IAllocator.
4842 ial = IAllocator(self,
4843 mode=constants.IALLOCATOR_MODE_RELOC,
4844 name=self.op.instance_name,
4845 relocate_from=[self.sec_node])
4847 ial.Run(self.op.iallocator)
4850 raise errors.OpPrereqError("Can't compute nodes using"
4851 " iallocator '%s': %s" % (self.op.iallocator,
4853 if len(ial.nodes) != ial.required_nodes:
4854 raise errors.OpPrereqError("iallocator '%s' returned invalid number"
4855 " of nodes (%s), required %s" %
4856 (len(ial.nodes), ial.required_nodes))
4857 self.op.remote_node = ial.nodes[0]
4858 self.LogInfo("Selected new secondary for the instance: %s",
4859 self.op.remote_node)
4861 def BuildHooksEnv(self):
4864 This runs on the master, the primary and all the secondaries.
4868 "MODE": self.op.mode,
4869 "NEW_SECONDARY": self.op.remote_node,
4870 "OLD_SECONDARY": self.instance.secondary_nodes[0],
4872 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
4874 self.cfg.GetMasterNode(),
4875 self.instance.primary_node,
4877 if self.op.remote_node is not None:
4878 nl.append(self.op.remote_node)
4881 def CheckPrereq(self):
4882 """Check prerequisites.
4884 This checks that the instance is in the cluster.
4887 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
4888 assert instance is not None, \
4889 "Cannot retrieve locked instance %s" % self.op.instance_name
4890 self.instance = instance
4892 if instance.disk_template != constants.DT_DRBD8:
4893 raise errors.OpPrereqError("Can only run replace disks for DRBD8-based"
4896 if len(instance.secondary_nodes) != 1:
4897 raise errors.OpPrereqError("The instance has a strange layout,"
4898 " expected one secondary but found %d" %
4899 len(instance.secondary_nodes))
4901 self.sec_node = instance.secondary_nodes[0]
4903 if self.op.iallocator is not None:
4904 self._RunAllocator()
4906 remote_node = self.op.remote_node
4907 if remote_node is not None:
4908 self.remote_node_info = self.cfg.GetNodeInfo(remote_node)
4909 assert self.remote_node_info is not None, \
4910 "Cannot retrieve locked node %s" % remote_node
4912 self.remote_node_info = None
4913 if remote_node == instance.primary_node:
4914 raise errors.OpPrereqError("The specified node is the primary node of"
4916 elif remote_node == self.sec_node:
4917 raise errors.OpPrereqError("The specified node is already the"
4918 " secondary node of the instance.")
4920 if self.op.mode == constants.REPLACE_DISK_PRI:
4921 n1 = self.tgt_node = instance.primary_node
4922 n2 = self.oth_node = self.sec_node
4923 elif self.op.mode == constants.REPLACE_DISK_SEC:
4924 n1 = self.tgt_node = self.sec_node
4925 n2 = self.oth_node = instance.primary_node
4926 elif self.op.mode == constants.REPLACE_DISK_CHG:
4927 n1 = self.new_node = remote_node
4928 n2 = self.oth_node = instance.primary_node
4929 self.tgt_node = self.sec_node
4930 _CheckNodeNotDrained(self, remote_node)
4932 raise errors.ProgrammerError("Unhandled disk replace mode")
4934 _CheckNodeOnline(self, n1)
4935 _CheckNodeOnline(self, n2)
4937 if not self.op.disks:
4938 self.op.disks = range(len(instance.disks))
4940 for disk_idx in self.op.disks:
4941 instance.FindDisk(disk_idx)
4943 def _ExecD8DiskOnly(self, feedback_fn):
4944 """Replace a disk on the primary or secondary for dbrd8.
4946 The algorithm for replace is quite complicated:
4948 1. for each disk to be replaced:
4950 1. create new LVs on the target node with unique names
4951 1. detach old LVs from the drbd device
4952 1. rename old LVs to name_replaced.<time_t>
4953 1. rename new LVs to old LVs
4954 1. attach the new LVs (with the old names now) to the drbd device
4956 1. wait for sync across all devices
4958 1. for each modified disk:
4960 1. remove old LVs (which have the name name_replaces.<time_t>)
4962 Failures are not very well handled.
4966 warning, info = (self.proc.LogWarning, self.proc.LogInfo)
4967 instance = self.instance
4969 vgname = self.cfg.GetVGName()
4972 tgt_node = self.tgt_node
4973 oth_node = self.oth_node
4975 # Step: check device activation
4976 self.proc.LogStep(1, steps_total, "check device existence")
4977 info("checking volume groups")
4978 my_vg = cfg.GetVGName()
4979 results = self.rpc.call_vg_list([oth_node, tgt_node])
4981 raise errors.OpExecError("Can't list volume groups on the nodes")
4982 for node in oth_node, tgt_node:
4984 if res.failed or not res.data or my_vg not in res.data:
4985 raise errors.OpExecError("Volume group '%s' not found on %s" %
4987 for idx, dev in enumerate(instance.disks):
4988 if idx not in self.op.disks:
4990 for node in tgt_node, oth_node:
4991 info("checking disk/%d on %s" % (idx, node))
4992 cfg.SetDiskID(dev, node)
4993 result = self.rpc.call_blockdev_find(node, dev)
4994 msg = result.RemoteFailMsg()
4995 if not msg and not result.payload:
4996 msg = "disk not found"
4998 raise errors.OpExecError("Can't find disk/%d on node %s: %s" %
5001 # Step: check other node consistency
5002 self.proc.LogStep(2, steps_total, "check peer consistency")
5003 for idx, dev in enumerate(instance.disks):
5004 if idx not in self.op.disks:
5006 info("checking disk/%d consistency on %s" % (idx, oth_node))
5007 if not _CheckDiskConsistency(self, dev, oth_node,
5008 oth_node==instance.primary_node):
5009 raise errors.OpExecError("Peer node (%s) has degraded storage, unsafe"
5010 " to replace disks on this node (%s)" %
5011 (oth_node, tgt_node))
5013 # Step: create new storage
5014 self.proc.LogStep(3, steps_total, "allocate new storage")
5015 for idx, dev in enumerate(instance.disks):
5016 if idx not in self.op.disks:
5019 cfg.SetDiskID(dev, tgt_node)
5020 lv_names = [".disk%d_%s" % (idx, suf)
5021 for suf in ["data", "meta"]]
5022 names = _GenerateUniqueNames(self, lv_names)
5023 lv_data = objects.Disk(dev_type=constants.LD_LV, size=size,
5024 logical_id=(vgname, names[0]))
5025 lv_meta = objects.Disk(dev_type=constants.LD_LV, size=128,
5026 logical_id=(vgname, names[1]))
5027 new_lvs = [lv_data, lv_meta]
5028 old_lvs = dev.children
5029 iv_names[dev.iv_name] = (dev, old_lvs, new_lvs)
5030 info("creating new local storage on %s for %s" %
5031 (tgt_node, dev.iv_name))
5032 # we pass force_create=True to force the LVM creation
5033 for new_lv in new_lvs:
5034 _CreateBlockDev(self, tgt_node, instance, new_lv, True,
5035 _GetInstanceInfoText(instance), False)
5037 # Step: for each lv, detach+rename*2+attach
5038 self.proc.LogStep(4, steps_total, "change drbd configuration")
5039 for dev, old_lvs, new_lvs in iv_names.itervalues():
5040 info("detaching %s drbd from local storage" % dev.iv_name)
5041 result = self.rpc.call_blockdev_removechildren(tgt_node, dev, old_lvs)
5044 raise errors.OpExecError("Can't detach drbd from local storage on node"
5045 " %s for device %s" % (tgt_node, dev.iv_name))
5047 #cfg.Update(instance)
5049 # ok, we created the new LVs, so now we know we have the needed
5050 # storage; as such, we proceed on the target node to rename
5051 # old_lv to _old, and new_lv to old_lv; note that we rename LVs
5052 # using the assumption that logical_id == physical_id (which in
5053 # turn is the unique_id on that node)
5055 # FIXME(iustin): use a better name for the replaced LVs
5056 temp_suffix = int(time.time())
5057 ren_fn = lambda d, suff: (d.physical_id[0],
5058 d.physical_id[1] + "_replaced-%s" % suff)
5059 # build the rename list based on what LVs exist on the node
5061 for to_ren in old_lvs:
5062 result = self.rpc.call_blockdev_find(tgt_node, to_ren)
5063 if not result.RemoteFailMsg() and result.payload:
5065 rlist.append((to_ren, ren_fn(to_ren, temp_suffix)))
5067 info("renaming the old LVs on the target node")
5068 result = self.rpc.call_blockdev_rename(tgt_node, rlist)
5071 raise errors.OpExecError("Can't rename old LVs on node %s" % tgt_node)
5072 # now we rename the new LVs to the old LVs
5073 info("renaming the new LVs on the target node")
5074 rlist = [(new, old.physical_id) for old, new in zip(old_lvs, new_lvs)]
5075 result = self.rpc.call_blockdev_rename(tgt_node, rlist)
5078 raise errors.OpExecError("Can't rename new LVs on node %s" % tgt_node)
5080 for old, new in zip(old_lvs, new_lvs):
5081 new.logical_id = old.logical_id
5082 cfg.SetDiskID(new, tgt_node)
5084 for disk in old_lvs:
5085 disk.logical_id = ren_fn(disk, temp_suffix)
5086 cfg.SetDiskID(disk, tgt_node)
5088 # now that the new lvs have the old name, we can add them to the device
5089 info("adding new mirror component on %s" % tgt_node)
5090 result = self.rpc.call_blockdev_addchildren(tgt_node, dev, new_lvs)
5091 if result.failed or not result.data:
5092 for new_lv in new_lvs:
5093 msg = self.rpc.call_blockdev_remove(tgt_node, new_lv).RemoteFailMsg()
5095 warning("Can't rollback device %s: %s", dev, msg,
5096 hint="cleanup manually the unused logical volumes")
5097 raise errors.OpExecError("Can't add local storage to drbd")
5099 dev.children = new_lvs
5100 cfg.Update(instance)
5102 # Step: wait for sync
5104 # this can fail as the old devices are degraded and _WaitForSync
5105 # does a combined result over all disks, so we don't check its
5107 self.proc.LogStep(5, steps_total, "sync devices")
5108 _WaitForSync(self, instance, unlock=True)
5110 # so check manually all the devices
5111 for name, (dev, old_lvs, new_lvs) in iv_names.iteritems():
5112 cfg.SetDiskID(dev, instance.primary_node)
5113 result = self.rpc.call_blockdev_find(instance.primary_node, dev)
5114 msg = result.RemoteFailMsg()
5115 if not msg and not result.payload:
5116 msg = "disk not found"
5118 raise errors.OpExecError("Can't find DRBD device %s: %s" %
5120 if result.payload[5]:
5121 raise errors.OpExecError("DRBD device %s is degraded!" % name)
5123 # Step: remove old storage
5124 self.proc.LogStep(6, steps_total, "removing old storage")
5125 for name, (dev, old_lvs, new_lvs) in iv_names.iteritems():
5126 info("remove logical volumes for %s" % name)
5128 cfg.SetDiskID(lv, tgt_node)
5129 msg = self.rpc.call_blockdev_remove(tgt_node, lv).RemoteFailMsg()
5131 warning("Can't remove old LV: %s" % msg,
5132 hint="manually remove unused LVs")
5135 def _ExecD8Secondary(self, feedback_fn):
5136 """Replace the secondary node for drbd8.
5138 The algorithm for replace is quite complicated:
5139 - for all disks of the instance:
5140 - create new LVs on the new node with same names
5141 - shutdown the drbd device on the old secondary
5142 - disconnect the drbd network on the primary
5143 - create the drbd device on the new secondary
5144 - network attach the drbd on the primary, using an artifice:
5145 the drbd code for Attach() will connect to the network if it
5146 finds a device which is connected to the good local disks but
5148 - wait for sync across all devices
5149 - remove all disks from the old secondary
5151 Failures are not very well handled.
5155 warning, info = (self.proc.LogWarning, self.proc.LogInfo)
5156 instance = self.instance
5160 old_node = self.tgt_node
5161 new_node = self.new_node
5162 pri_node = instance.primary_node
5164 old_node: self.cfg.GetNodeInfo(old_node).secondary_ip,
5165 new_node: self.cfg.GetNodeInfo(new_node).secondary_ip,
5166 pri_node: self.cfg.GetNodeInfo(pri_node).secondary_ip,
5169 # Step: check device activation
5170 self.proc.LogStep(1, steps_total, "check device existence")
5171 info("checking volume groups")
5172 my_vg = cfg.GetVGName()
5173 results = self.rpc.call_vg_list([pri_node, new_node])
5174 for node in pri_node, new_node:
5176 if res.failed or not res.data or my_vg not in res.data:
5177 raise errors.OpExecError("Volume group '%s' not found on %s" %
5179 for idx, dev in enumerate(instance.disks):
5180 if idx not in self.op.disks:
5182 info("checking disk/%d on %s" % (idx, pri_node))
5183 cfg.SetDiskID(dev, pri_node)
5184 result = self.rpc.call_blockdev_find(pri_node, dev)
5185 msg = result.RemoteFailMsg()
5186 if not msg and not result.payload:
5187 msg = "disk not found"
5189 raise errors.OpExecError("Can't find disk/%d on node %s: %s" %
5190 (idx, pri_node, msg))
5192 # Step: check other node consistency
5193 self.proc.LogStep(2, steps_total, "check peer consistency")
5194 for idx, dev in enumerate(instance.disks):
5195 if idx not in self.op.disks:
5197 info("checking disk/%d consistency on %s" % (idx, pri_node))
5198 if not _CheckDiskConsistency(self, dev, pri_node, True, ldisk=True):
5199 raise errors.OpExecError("Primary node (%s) has degraded storage,"
5200 " unsafe to replace the secondary" %
5203 # Step: create new storage
5204 self.proc.LogStep(3, steps_total, "allocate new storage")
5205 for idx, dev in enumerate(instance.disks):
5206 info("adding new local storage on %s for disk/%d" %
5208 # we pass force_create=True to force LVM creation
5209 for new_lv in dev.children:
5210 _CreateBlockDev(self, new_node, instance, new_lv, True,
5211 _GetInstanceInfoText(instance), False)
5213 # Step 4: dbrd minors and drbd setups changes
5214 # after this, we must manually remove the drbd minors on both the
5215 # error and the success paths
5216 minors = cfg.AllocateDRBDMinor([new_node for dev in instance.disks],
5218 logging.debug("Allocated minors %s" % (minors,))
5219 self.proc.LogStep(4, steps_total, "changing drbd configuration")
5220 for idx, (dev, new_minor) in enumerate(zip(instance.disks, minors)):
5222 info("activating a new drbd on %s for disk/%d" % (new_node, idx))
5223 # create new devices on new_node; note that we create two IDs:
5224 # one without port, so the drbd will be activated without
5225 # networking information on the new node at this stage, and one
5226 # with network, for the latter activation in step 4
5227 (o_node1, o_node2, o_port, o_minor1, o_minor2, o_secret) = dev.logical_id
5228 if pri_node == o_node1:
5233 new_alone_id = (pri_node, new_node, None, p_minor, new_minor, o_secret)
5234 new_net_id = (pri_node, new_node, o_port, p_minor, new_minor, o_secret)
5236 iv_names[idx] = (dev, dev.children, new_net_id)
5237 logging.debug("Allocated new_minor: %s, new_logical_id: %s", new_minor,
5239 new_drbd = objects.Disk(dev_type=constants.LD_DRBD8,
5240 logical_id=new_alone_id,
5241 children=dev.children)
5243 _CreateSingleBlockDev(self, new_node, instance, new_drbd,
5244 _GetInstanceInfoText(instance), False)
5245 except errors.BlockDeviceError:
5246 self.cfg.ReleaseDRBDMinors(instance.name)
5249 for idx, dev in enumerate(instance.disks):
5250 # we have new devices, shutdown the drbd on the old secondary
5251 info("shutting down drbd for disk/%d on old node" % idx)
5252 cfg.SetDiskID(dev, old_node)
5253 msg = self.rpc.call_blockdev_shutdown(old_node, dev).RemoteFailMsg()
5255 warning("Failed to shutdown drbd for disk/%d on old node: %s" %
5257 hint="Please cleanup this device manually as soon as possible")
5259 info("detaching primary drbds from the network (=> standalone)")
5260 result = self.rpc.call_drbd_disconnect_net([pri_node], nodes_ip,
5261 instance.disks)[pri_node]
5263 msg = result.RemoteFailMsg()
5265 # detaches didn't succeed (unlikely)
5266 self.cfg.ReleaseDRBDMinors(instance.name)
5267 raise errors.OpExecError("Can't detach the disks from the network on"
5268 " old node: %s" % (msg,))
5270 # if we managed to detach at least one, we update all the disks of
5271 # the instance to point to the new secondary
5272 info("updating instance configuration")
5273 for dev, _, new_logical_id in iv_names.itervalues():
5274 dev.logical_id = new_logical_id
5275 cfg.SetDiskID(dev, pri_node)
5276 cfg.Update(instance)
5278 # and now perform the drbd attach
5279 info("attaching primary drbds to new secondary (standalone => connected)")
5280 result = self.rpc.call_drbd_attach_net([pri_node, new_node], nodes_ip,
5281 instance.disks, instance.name,
5283 for to_node, to_result in result.items():
5284 msg = to_result.RemoteFailMsg()
5286 warning("can't attach drbd disks on node %s: %s", to_node, msg,
5287 hint="please do a gnt-instance info to see the"
5290 # this can fail as the old devices are degraded and _WaitForSync
5291 # does a combined result over all disks, so we don't check its
5293 self.proc.LogStep(5, steps_total, "sync devices")
5294 _WaitForSync(self, instance, unlock=True)
5296 # so check manually all the devices
5297 for idx, (dev, old_lvs, _) in iv_names.iteritems():
5298 cfg.SetDiskID(dev, pri_node)
5299 result = self.rpc.call_blockdev_find(pri_node, dev)
5300 msg = result.RemoteFailMsg()
5301 if not msg and not result.payload:
5302 msg = "disk not found"
5304 raise errors.OpExecError("Can't find DRBD device disk/%d: %s" %
5306 if result.payload[5]:
5307 raise errors.OpExecError("DRBD device disk/%d is degraded!" % idx)
5309 self.proc.LogStep(6, steps_total, "removing old storage")
5310 for idx, (dev, old_lvs, _) in iv_names.iteritems():
5311 info("remove logical volumes for disk/%d" % idx)
5313 cfg.SetDiskID(lv, old_node)
5314 msg = self.rpc.call_blockdev_remove(old_node, lv).RemoteFailMsg()
5316 warning("Can't remove LV on old secondary: %s", msg,
5317 hint="Cleanup stale volumes by hand")
5319 def Exec(self, feedback_fn):
5320 """Execute disk replacement.
5322 This dispatches the disk replacement to the appropriate handler.
5325 instance = self.instance
5327 # Activate the instance disks if we're replacing them on a down instance
5328 if not instance.admin_up:
5329 _StartInstanceDisks(self, instance, True)
5331 if self.op.mode == constants.REPLACE_DISK_CHG:
5332 fn = self._ExecD8Secondary
5334 fn = self._ExecD8DiskOnly
5336 ret = fn(feedback_fn)
5338 # Deactivate the instance disks if we're replacing them on a down instance
5339 if not instance.admin_up:
5340 _SafeShutdownInstanceDisks(self, instance)
5345 class LUGrowDisk(LogicalUnit):
5346 """Grow a disk of an instance.
5350 HTYPE = constants.HTYPE_INSTANCE
5351 _OP_REQP = ["instance_name", "disk", "amount", "wait_for_sync"]
5354 def ExpandNames(self):
5355 self._ExpandAndLockInstance()
5356 self.needed_locks[locking.LEVEL_NODE] = []
5357 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5359 def DeclareLocks(self, level):
5360 if level == locking.LEVEL_NODE:
5361 self._LockInstancesNodes()
5363 def BuildHooksEnv(self):
5366 This runs on the master, the primary and all the secondaries.
5370 "DISK": self.op.disk,
5371 "AMOUNT": self.op.amount,
5373 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
5375 self.cfg.GetMasterNode(),
5376 self.instance.primary_node,
5380 def CheckPrereq(self):
5381 """Check prerequisites.
5383 This checks that the instance is in the cluster.
5386 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5387 assert instance is not None, \
5388 "Cannot retrieve locked instance %s" % self.op.instance_name
5389 nodenames = list(instance.all_nodes)
5390 for node in nodenames:
5391 _CheckNodeOnline(self, node)
5394 self.instance = instance
5396 if instance.disk_template not in (constants.DT_PLAIN, constants.DT_DRBD8):
5397 raise errors.OpPrereqError("Instance's disk layout does not support"
5400 self.disk = instance.FindDisk(self.op.disk)
5402 nodeinfo = self.rpc.call_node_info(nodenames, self.cfg.GetVGName(),
5403 instance.hypervisor)
5404 for node in nodenames:
5405 info = nodeinfo[node]
5406 if info.failed or not info.data:
5407 raise errors.OpPrereqError("Cannot get current information"
5408 " from node '%s'" % node)
5409 vg_free = info.data.get('vg_free', None)
5410 if not isinstance(vg_free, int):
5411 raise errors.OpPrereqError("Can't compute free disk space on"
5413 if self.op.amount > vg_free:
5414 raise errors.OpPrereqError("Not enough disk space on target node %s:"
5415 " %d MiB available, %d MiB required" %
5416 (node, vg_free, self.op.amount))
5418 def Exec(self, feedback_fn):
5419 """Execute disk grow.
5422 instance = self.instance
5424 for node in instance.all_nodes:
5425 self.cfg.SetDiskID(disk, node)
5426 result = self.rpc.call_blockdev_grow(node, disk, self.op.amount)
5427 msg = result.RemoteFailMsg()
5429 raise errors.OpExecError("Grow request failed to node %s: %s" %
5431 disk.RecordGrow(self.op.amount)
5432 self.cfg.Update(instance)
5433 if self.op.wait_for_sync:
5434 disk_abort = not _WaitForSync(self, instance)
5436 self.proc.LogWarning("Warning: disk sync-ing has not returned a good"
5437 " status.\nPlease check the instance.")
5440 class LUQueryInstanceData(NoHooksLU):
5441 """Query runtime instance data.
5444 _OP_REQP = ["instances", "static"]
5447 def ExpandNames(self):
5448 self.needed_locks = {}
5449 self.share_locks = dict(((i, 1) for i in locking.LEVELS))
5451 if not isinstance(self.op.instances, list):
5452 raise errors.OpPrereqError("Invalid argument type 'instances'")
5454 if self.op.instances:
5455 self.wanted_names = []
5456 for name in self.op.instances:
5457 full_name = self.cfg.ExpandInstanceName(name)
5458 if full_name is None:
5459 raise errors.OpPrereqError("Instance '%s' not known" % name)
5460 self.wanted_names.append(full_name)
5461 self.needed_locks[locking.LEVEL_INSTANCE] = self.wanted_names
5463 self.wanted_names = None
5464 self.needed_locks[locking.LEVEL_INSTANCE] = locking.ALL_SET
5466 self.needed_locks[locking.LEVEL_NODE] = []
5467 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5469 def DeclareLocks(self, level):
5470 if level == locking.LEVEL_NODE:
5471 self._LockInstancesNodes()
5473 def CheckPrereq(self):
5474 """Check prerequisites.
5476 This only checks the optional instance list against the existing names.
5479 if self.wanted_names is None:
5480 self.wanted_names = self.acquired_locks[locking.LEVEL_INSTANCE]
5482 self.wanted_instances = [self.cfg.GetInstanceInfo(name) for name
5483 in self.wanted_names]
5486 def _ComputeDiskStatus(self, instance, snode, dev):
5487 """Compute block device status.
5490 static = self.op.static
5492 self.cfg.SetDiskID(dev, instance.primary_node)
5493 dev_pstatus = self.rpc.call_blockdev_find(instance.primary_node, dev)
5494 msg = dev_pstatus.RemoteFailMsg()
5496 raise errors.OpExecError("Can't compute disk status for %s: %s" %
5497 (instance.name, msg))
5498 dev_pstatus = dev_pstatus.payload
5502 if dev.dev_type in constants.LDS_DRBD:
5503 # we change the snode then (otherwise we use the one passed in)
5504 if dev.logical_id[0] == instance.primary_node:
5505 snode = dev.logical_id[1]
5507 snode = dev.logical_id[0]
5509 if snode and not static:
5510 self.cfg.SetDiskID(dev, snode)
5511 dev_sstatus = self.rpc.call_blockdev_find(snode, dev)
5512 msg = dev_sstatus.RemoteFailMsg()
5514 raise errors.OpExecError("Can't compute disk status for %s: %s" %
5515 (instance.name, msg))
5516 dev_sstatus = dev_sstatus.payload
5521 dev_children = [self._ComputeDiskStatus(instance, snode, child)
5522 for child in dev.children]
5527 "iv_name": dev.iv_name,
5528 "dev_type": dev.dev_type,
5529 "logical_id": dev.logical_id,
5530 "physical_id": dev.physical_id,
5531 "pstatus": dev_pstatus,
5532 "sstatus": dev_sstatus,
5533 "children": dev_children,
5539 def Exec(self, feedback_fn):
5540 """Gather and return data"""
5543 cluster = self.cfg.GetClusterInfo()
5545 for instance in self.wanted_instances:
5546 if not self.op.static:
5547 remote_info = self.rpc.call_instance_info(instance.primary_node,
5549 instance.hypervisor)
5551 remote_info = remote_info.data
5552 if remote_info and "state" in remote_info:
5555 remote_state = "down"
5558 if instance.admin_up:
5561 config_state = "down"
5563 disks = [self._ComputeDiskStatus(instance, None, device)
5564 for device in instance.disks]
5567 "name": instance.name,
5568 "config_state": config_state,
5569 "run_state": remote_state,
5570 "pnode": instance.primary_node,
5571 "snodes": instance.secondary_nodes,
5573 "nics": [(nic.mac, nic.ip, nic.bridge) for nic in instance.nics],
5575 "hypervisor": instance.hypervisor,
5576 "network_port": instance.network_port,
5577 "hv_instance": instance.hvparams,
5578 "hv_actual": cluster.FillHV(instance),
5579 "be_instance": instance.beparams,
5580 "be_actual": cluster.FillBE(instance),
5583 result[instance.name] = idict
5588 class LUSetInstanceParams(LogicalUnit):
5589 """Modifies an instances's parameters.
5592 HPATH = "instance-modify"
5593 HTYPE = constants.HTYPE_INSTANCE
5594 _OP_REQP = ["instance_name"]
5597 def CheckArguments(self):
5598 if not hasattr(self.op, 'nics'):
5600 if not hasattr(self.op, 'disks'):
5602 if not hasattr(self.op, 'beparams'):
5603 self.op.beparams = {}
5604 if not hasattr(self.op, 'hvparams'):
5605 self.op.hvparams = {}
5606 self.op.force = getattr(self.op, "force", False)
5607 if not (self.op.nics or self.op.disks or
5608 self.op.hvparams or self.op.beparams):
5609 raise errors.OpPrereqError("No changes submitted")
5613 for disk_op, disk_dict in self.op.disks:
5614 if disk_op == constants.DDM_REMOVE:
5617 elif disk_op == constants.DDM_ADD:
5620 if not isinstance(disk_op, int):
5621 raise errors.OpPrereqError("Invalid disk index")
5622 if disk_op == constants.DDM_ADD:
5623 mode = disk_dict.setdefault('mode', constants.DISK_RDWR)
5624 if mode not in constants.DISK_ACCESS_SET:
5625 raise errors.OpPrereqError("Invalid disk access mode '%s'" % mode)
5626 size = disk_dict.get('size', None)
5628 raise errors.OpPrereqError("Required disk parameter size missing")
5631 except ValueError, err:
5632 raise errors.OpPrereqError("Invalid disk size parameter: %s" %
5634 disk_dict['size'] = size
5636 # modification of disk
5637 if 'size' in disk_dict:
5638 raise errors.OpPrereqError("Disk size change not possible, use"
5641 if disk_addremove > 1:
5642 raise errors.OpPrereqError("Only one disk add or remove operation"
5643 " supported at a time")
5647 for nic_op, nic_dict in self.op.nics:
5648 if nic_op == constants.DDM_REMOVE:
5651 elif nic_op == constants.DDM_ADD:
5654 if not isinstance(nic_op, int):
5655 raise errors.OpPrereqError("Invalid nic index")
5657 # nic_dict should be a dict
5658 nic_ip = nic_dict.get('ip', None)
5659 if nic_ip is not None:
5660 if nic_ip.lower() == "none":
5661 nic_dict['ip'] = None
5663 if not utils.IsValidIP(nic_ip):
5664 raise errors.OpPrereqError("Invalid IP address '%s'" % nic_ip)
5665 # we can only check None bridges and assign the default one
5666 nic_bridge = nic_dict.get('bridge', None)
5667 if nic_bridge is None:
5668 nic_dict['bridge'] = self.cfg.GetDefBridge()
5669 # but we can validate MACs
5670 nic_mac = nic_dict.get('mac', None)
5671 if nic_mac is not None:
5672 if self.cfg.IsMacInUse(nic_mac):
5673 raise errors.OpPrereqError("MAC address %s already in use"
5674 " in cluster" % nic_mac)
5675 if nic_mac not in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
5676 if not utils.IsValidMac(nic_mac):
5677 raise errors.OpPrereqError("Invalid MAC address %s" % nic_mac)
5678 if nic_addremove > 1:
5679 raise errors.OpPrereqError("Only one NIC add or remove operation"
5680 " supported at a time")
5682 def ExpandNames(self):
5683 self._ExpandAndLockInstance()
5684 self.needed_locks[locking.LEVEL_NODE] = []
5685 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5687 def DeclareLocks(self, level):
5688 if level == locking.LEVEL_NODE:
5689 self._LockInstancesNodes()
5691 def BuildHooksEnv(self):
5694 This runs on the master, primary and secondaries.
5698 if constants.BE_MEMORY in self.be_new:
5699 args['memory'] = self.be_new[constants.BE_MEMORY]
5700 if constants.BE_VCPUS in self.be_new:
5701 args['vcpus'] = self.be_new[constants.BE_VCPUS]
5702 # FIXME: readd disk/nic changes
5703 env = _BuildInstanceHookEnvByObject(self, self.instance, override=args)
5704 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
5707 def CheckPrereq(self):
5708 """Check prerequisites.
5710 This only checks the instance list against the existing names.
5713 force = self.force = self.op.force
5715 # checking the new params on the primary/secondary nodes
5717 instance = self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5718 assert self.instance is not None, \
5719 "Cannot retrieve locked instance %s" % self.op.instance_name
5720 pnode = instance.primary_node
5721 nodelist = list(instance.all_nodes)
5723 # hvparams processing
5724 if self.op.hvparams:
5725 i_hvdict = copy.deepcopy(instance.hvparams)
5726 for key, val in self.op.hvparams.iteritems():
5727 if val == constants.VALUE_DEFAULT:
5734 cluster = self.cfg.GetClusterInfo()
5735 utils.ForceDictType(i_hvdict, constants.HVS_PARAMETER_TYPES)
5736 hv_new = cluster.FillDict(cluster.hvparams[instance.hypervisor],
5739 hypervisor.GetHypervisor(
5740 instance.hypervisor).CheckParameterSyntax(hv_new)
5741 _CheckHVParams(self, nodelist, instance.hypervisor, hv_new)
5742 self.hv_new = hv_new # the new actual values
5743 self.hv_inst = i_hvdict # the new dict (without defaults)
5745 self.hv_new = self.hv_inst = {}
5747 # beparams processing
5748 if self.op.beparams:
5749 i_bedict = copy.deepcopy(instance.beparams)
5750 for key, val in self.op.beparams.iteritems():
5751 if val == constants.VALUE_DEFAULT:
5758 cluster = self.cfg.GetClusterInfo()
5759 utils.ForceDictType(i_bedict, constants.BES_PARAMETER_TYPES)
5760 be_new = cluster.FillDict(cluster.beparams[constants.BEGR_DEFAULT],
5762 self.be_new = be_new # the new actual values
5763 self.be_inst = i_bedict # the new dict (without defaults)
5765 self.be_new = self.be_inst = {}
5769 if constants.BE_MEMORY in self.op.beparams and not self.force:
5770 mem_check_list = [pnode]
5771 if be_new[constants.BE_AUTO_BALANCE]:
5772 # either we changed auto_balance to yes or it was from before
5773 mem_check_list.extend(instance.secondary_nodes)
5774 instance_info = self.rpc.call_instance_info(pnode, instance.name,
5775 instance.hypervisor)
5776 nodeinfo = self.rpc.call_node_info(mem_check_list, self.cfg.GetVGName(),
5777 instance.hypervisor)
5778 if nodeinfo[pnode].failed or not isinstance(nodeinfo[pnode].data, dict):
5779 # Assume the primary node is unreachable and go ahead
5780 self.warn.append("Can't get info from primary node %s" % pnode)
5782 if not instance_info.failed and instance_info.data:
5783 current_mem = instance_info.data['memory']
5785 # Assume instance not running
5786 # (there is a slight race condition here, but it's not very probable,
5787 # and we have no other way to check)
5789 miss_mem = (be_new[constants.BE_MEMORY] - current_mem -
5790 nodeinfo[pnode].data['memory_free'])
5792 raise errors.OpPrereqError("This change will prevent the instance"
5793 " from starting, due to %d MB of memory"
5794 " missing on its primary node" % miss_mem)
5796 if be_new[constants.BE_AUTO_BALANCE]:
5797 for node, nres in nodeinfo.iteritems():
5798 if node not in instance.secondary_nodes:
5800 if nres.failed or not isinstance(nres.data, dict):
5801 self.warn.append("Can't get info from secondary node %s" % node)
5802 elif be_new[constants.BE_MEMORY] > nres.data['memory_free']:
5803 self.warn.append("Not enough memory to failover instance to"
5804 " secondary node %s" % node)
5807 for nic_op, nic_dict in self.op.nics:
5808 if nic_op == constants.DDM_REMOVE:
5809 if not instance.nics:
5810 raise errors.OpPrereqError("Instance has no NICs, cannot remove")
5812 if nic_op != constants.DDM_ADD:
5814 if nic_op < 0 or nic_op >= len(instance.nics):
5815 raise errors.OpPrereqError("Invalid NIC index %s, valid values"
5817 (nic_op, len(instance.nics)))
5818 nic_bridge = nic_dict.get('bridge', None)
5819 if nic_bridge is not None:
5820 if not self.rpc.call_bridges_exist(pnode, [nic_bridge]):
5821 msg = ("Bridge '%s' doesn't exist on one of"
5822 " the instance nodes" % nic_bridge)
5824 self.warn.append(msg)
5826 raise errors.OpPrereqError(msg)
5829 if self.op.disks and instance.disk_template == constants.DT_DISKLESS:
5830 raise errors.OpPrereqError("Disk operations not supported for"
5831 " diskless instances")
5832 for disk_op, disk_dict in self.op.disks:
5833 if disk_op == constants.DDM_REMOVE:
5834 if len(instance.disks) == 1:
5835 raise errors.OpPrereqError("Cannot remove the last disk of"
5837 ins_l = self.rpc.call_instance_list([pnode], [instance.hypervisor])
5838 ins_l = ins_l[pnode]
5839 if ins_l.failed or not isinstance(ins_l.data, list):
5840 raise errors.OpPrereqError("Can't contact node '%s'" % pnode)
5841 if instance.name in ins_l.data:
5842 raise errors.OpPrereqError("Instance is running, can't remove"
5845 if (disk_op == constants.DDM_ADD and
5846 len(instance.nics) >= constants.MAX_DISKS):
5847 raise errors.OpPrereqError("Instance has too many disks (%d), cannot"
5848 " add more" % constants.MAX_DISKS)
5849 if disk_op not in (constants.DDM_ADD, constants.DDM_REMOVE):
5851 if disk_op < 0 or disk_op >= len(instance.disks):
5852 raise errors.OpPrereqError("Invalid disk index %s, valid values"
5854 (disk_op, len(instance.disks)))
5858 def Exec(self, feedback_fn):
5859 """Modifies an instance.
5861 All parameters take effect only at the next restart of the instance.
5864 # Process here the warnings from CheckPrereq, as we don't have a
5865 # feedback_fn there.
5866 for warn in self.warn:
5867 feedback_fn("WARNING: %s" % warn)
5870 instance = self.instance
5872 for disk_op, disk_dict in self.op.disks:
5873 if disk_op == constants.DDM_REMOVE:
5874 # remove the last disk
5875 device = instance.disks.pop()
5876 device_idx = len(instance.disks)
5877 for node, disk in device.ComputeNodeTree(instance.primary_node):
5878 self.cfg.SetDiskID(disk, node)
5879 msg = self.rpc.call_blockdev_remove(node, disk).RemoteFailMsg()
5881 self.LogWarning("Could not remove disk/%d on node %s: %s,"
5882 " continuing anyway", device_idx, node, msg)
5883 result.append(("disk/%d" % device_idx, "remove"))
5884 elif disk_op == constants.DDM_ADD:
5886 if instance.disk_template == constants.DT_FILE:
5887 file_driver, file_path = instance.disks[0].logical_id
5888 file_path = os.path.dirname(file_path)
5890 file_driver = file_path = None
5891 disk_idx_base = len(instance.disks)
5892 new_disk = _GenerateDiskTemplate(self,
5893 instance.disk_template,
5894 instance.name, instance.primary_node,
5895 instance.secondary_nodes,
5900 instance.disks.append(new_disk)
5901 info = _GetInstanceInfoText(instance)
5903 logging.info("Creating volume %s for instance %s",
5904 new_disk.iv_name, instance.name)
5905 # Note: this needs to be kept in sync with _CreateDisks
5907 for node in instance.all_nodes:
5908 f_create = node == instance.primary_node
5910 _CreateBlockDev(self, node, instance, new_disk,
5911 f_create, info, f_create)
5912 except errors.OpExecError, err:
5913 self.LogWarning("Failed to create volume %s (%s) on"
5915 new_disk.iv_name, new_disk, node, err)
5916 result.append(("disk/%d" % disk_idx_base, "add:size=%s,mode=%s" %
5917 (new_disk.size, new_disk.mode)))
5919 # change a given disk
5920 instance.disks[disk_op].mode = disk_dict['mode']
5921 result.append(("disk.mode/%d" % disk_op, disk_dict['mode']))
5923 for nic_op, nic_dict in self.op.nics:
5924 if nic_op == constants.DDM_REMOVE:
5925 # remove the last nic
5926 del instance.nics[-1]
5927 result.append(("nic.%d" % len(instance.nics), "remove"))
5928 elif nic_op == constants.DDM_ADD:
5930 if 'mac' not in nic_dict:
5931 mac = constants.VALUE_GENERATE
5933 mac = nic_dict['mac']
5934 if mac in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
5935 mac = self.cfg.GenerateMAC()
5936 new_nic = objects.NIC(mac=mac, ip=nic_dict.get('ip', None),
5937 bridge=nic_dict.get('bridge', None))
5938 instance.nics.append(new_nic)
5939 result.append(("nic.%d" % (len(instance.nics) - 1),
5940 "add:mac=%s,ip=%s,bridge=%s" %
5941 (new_nic.mac, new_nic.ip, new_nic.bridge)))
5943 # change a given nic
5944 for key in 'mac', 'ip', 'bridge':
5946 setattr(instance.nics[nic_op], key, nic_dict[key])
5947 result.append(("nic.%s/%d" % (key, nic_op), nic_dict[key]))
5950 if self.op.hvparams:
5951 instance.hvparams = self.hv_inst
5952 for key, val in self.op.hvparams.iteritems():
5953 result.append(("hv/%s" % key, val))
5956 if self.op.beparams:
5957 instance.beparams = self.be_inst
5958 for key, val in self.op.beparams.iteritems():
5959 result.append(("be/%s" % key, val))
5961 self.cfg.Update(instance)
5966 class LUQueryExports(NoHooksLU):
5967 """Query the exports list
5970 _OP_REQP = ['nodes']
5973 def ExpandNames(self):
5974 self.needed_locks = {}
5975 self.share_locks[locking.LEVEL_NODE] = 1
5976 if not self.op.nodes:
5977 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
5979 self.needed_locks[locking.LEVEL_NODE] = \
5980 _GetWantedNodes(self, self.op.nodes)
5982 def CheckPrereq(self):
5983 """Check prerequisites.
5986 self.nodes = self.acquired_locks[locking.LEVEL_NODE]
5988 def Exec(self, feedback_fn):
5989 """Compute the list of all the exported system images.
5992 @return: a dictionary with the structure node->(export-list)
5993 where export-list is a list of the instances exported on
5997 rpcresult = self.rpc.call_export_list(self.nodes)
5999 for node in rpcresult:
6000 if rpcresult[node].failed:
6001 result[node] = False
6003 result[node] = rpcresult[node].data
6008 class LUExportInstance(LogicalUnit):
6009 """Export an instance to an image in the cluster.
6012 HPATH = "instance-export"
6013 HTYPE = constants.HTYPE_INSTANCE
6014 _OP_REQP = ["instance_name", "target_node", "shutdown"]
6017 def ExpandNames(self):
6018 self._ExpandAndLockInstance()
6019 # FIXME: lock only instance primary and destination node
6021 # Sad but true, for now we have do lock all nodes, as we don't know where
6022 # the previous export might be, and and in this LU we search for it and
6023 # remove it from its current node. In the future we could fix this by:
6024 # - making a tasklet to search (share-lock all), then create the new one,
6025 # then one to remove, after
6026 # - removing the removal operation altoghether
6027 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
6029 def DeclareLocks(self, level):
6030 """Last minute lock declaration."""
6031 # All nodes are locked anyway, so nothing to do here.
6033 def BuildHooksEnv(self):
6036 This will run on the master, primary node and target node.
6040 "EXPORT_NODE": self.op.target_node,
6041 "EXPORT_DO_SHUTDOWN": self.op.shutdown,
6043 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
6044 nl = [self.cfg.GetMasterNode(), self.instance.primary_node,
6045 self.op.target_node]
6048 def CheckPrereq(self):
6049 """Check prerequisites.
6051 This checks that the instance and node names are valid.
6054 instance_name = self.op.instance_name
6055 self.instance = self.cfg.GetInstanceInfo(instance_name)
6056 assert self.instance is not None, \
6057 "Cannot retrieve locked instance %s" % self.op.instance_name
6058 _CheckNodeOnline(self, self.instance.primary_node)
6060 self.dst_node = self.cfg.GetNodeInfo(
6061 self.cfg.ExpandNodeName(self.op.target_node))
6063 if self.dst_node is None:
6064 # This is wrong node name, not a non-locked node
6065 raise errors.OpPrereqError("Wrong node name %s" % self.op.target_node)
6066 _CheckNodeOnline(self, self.dst_node.name)
6067 _CheckNodeNotDrained(self, self.dst_node.name)
6069 # instance disk type verification
6070 for disk in self.instance.disks:
6071 if disk.dev_type == constants.LD_FILE:
6072 raise errors.OpPrereqError("Export not supported for instances with"
6073 " file-based disks")
6075 def Exec(self, feedback_fn):
6076 """Export an instance to an image in the cluster.
6079 instance = self.instance
6080 dst_node = self.dst_node
6081 src_node = instance.primary_node
6082 if self.op.shutdown:
6083 # shutdown the instance, but not the disks
6084 result = self.rpc.call_instance_shutdown(src_node, instance)
6087 raise errors.OpExecError("Could not shutdown instance %s on node %s" %
6088 (instance.name, src_node))
6090 vgname = self.cfg.GetVGName()
6094 # set the disks ID correctly since call_instance_start needs the
6095 # correct drbd minor to create the symlinks
6096 for disk in instance.disks:
6097 self.cfg.SetDiskID(disk, src_node)
6100 for disk in instance.disks:
6101 # new_dev_name will be a snapshot of an lvm leaf of the one we passed
6102 new_dev_name = self.rpc.call_blockdev_snapshot(src_node, disk)
6103 if new_dev_name.failed or not new_dev_name.data:
6104 self.LogWarning("Could not snapshot block device %s on node %s",
6105 disk.logical_id[1], src_node)
6106 snap_disks.append(False)
6108 new_dev = objects.Disk(dev_type=constants.LD_LV, size=disk.size,
6109 logical_id=(vgname, new_dev_name.data),
6110 physical_id=(vgname, new_dev_name.data),
6111 iv_name=disk.iv_name)
6112 snap_disks.append(new_dev)
6115 if self.op.shutdown and instance.admin_up:
6116 result = self.rpc.call_instance_start(src_node, instance, None)
6117 msg = result.RemoteFailMsg()
6119 _ShutdownInstanceDisks(self, instance)
6120 raise errors.OpExecError("Could not start instance: %s" % msg)
6122 # TODO: check for size
6124 cluster_name = self.cfg.GetClusterName()
6125 for idx, dev in enumerate(snap_disks):
6127 result = self.rpc.call_snapshot_export(src_node, dev, dst_node.name,
6128 instance, cluster_name, idx)
6129 if result.failed or not result.data:
6130 self.LogWarning("Could not export block device %s from node %s to"
6131 " node %s", dev.logical_id[1], src_node,
6133 msg = self.rpc.call_blockdev_remove(src_node, dev).RemoteFailMsg()
6135 self.LogWarning("Could not remove snapshot block device %s from node"
6136 " %s: %s", dev.logical_id[1], src_node, msg)
6138 result = self.rpc.call_finalize_export(dst_node.name, instance, snap_disks)
6139 if result.failed or not result.data:
6140 self.LogWarning("Could not finalize export for instance %s on node %s",
6141 instance.name, dst_node.name)
6143 nodelist = self.cfg.GetNodeList()
6144 nodelist.remove(dst_node.name)
6146 # on one-node clusters nodelist will be empty after the removal
6147 # if we proceed the backup would be removed because OpQueryExports
6148 # substitutes an empty list with the full cluster node list.
6150 exportlist = self.rpc.call_export_list(nodelist)
6151 for node in exportlist:
6152 if exportlist[node].failed:
6154 if instance.name in exportlist[node].data:
6155 if not self.rpc.call_export_remove(node, instance.name):
6156 self.LogWarning("Could not remove older export for instance %s"
6157 " on node %s", instance.name, node)
6160 class LURemoveExport(NoHooksLU):
6161 """Remove exports related to the named instance.
6164 _OP_REQP = ["instance_name"]
6167 def ExpandNames(self):
6168 self.needed_locks = {}
6169 # We need all nodes to be locked in order for RemoveExport to work, but we
6170 # don't need to lock the instance itself, as nothing will happen to it (and
6171 # we can remove exports also for a removed instance)
6172 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
6174 def CheckPrereq(self):
6175 """Check prerequisites.
6179 def Exec(self, feedback_fn):
6180 """Remove any export.
6183 instance_name = self.cfg.ExpandInstanceName(self.op.instance_name)
6184 # If the instance was not found we'll try with the name that was passed in.
6185 # This will only work if it was an FQDN, though.
6187 if not instance_name:
6189 instance_name = self.op.instance_name
6191 exportlist = self.rpc.call_export_list(self.acquired_locks[
6192 locking.LEVEL_NODE])
6194 for node in exportlist:
6195 if exportlist[node].failed:
6196 self.LogWarning("Failed to query node %s, continuing" % node)
6198 if instance_name in exportlist[node].data:
6200 result = self.rpc.call_export_remove(node, instance_name)
6201 if result.failed or not result.data:
6202 logging.error("Could not remove export for instance %s"
6203 " on node %s", instance_name, node)
6205 if fqdn_warn and not found:
6206 feedback_fn("Export not found. If trying to remove an export belonging"
6207 " to a deleted instance please use its Fully Qualified"
6211 class TagsLU(NoHooksLU):
6214 This is an abstract class which is the parent of all the other tags LUs.
6218 def ExpandNames(self):
6219 self.needed_locks = {}
6220 if self.op.kind == constants.TAG_NODE:
6221 name = self.cfg.ExpandNodeName(self.op.name)
6223 raise errors.OpPrereqError("Invalid node name (%s)" %
6226 self.needed_locks[locking.LEVEL_NODE] = name
6227 elif self.op.kind == constants.TAG_INSTANCE:
6228 name = self.cfg.ExpandInstanceName(self.op.name)
6230 raise errors.OpPrereqError("Invalid instance name (%s)" %
6233 self.needed_locks[locking.LEVEL_INSTANCE] = name
6235 def CheckPrereq(self):
6236 """Check prerequisites.
6239 if self.op.kind == constants.TAG_CLUSTER:
6240 self.target = self.cfg.GetClusterInfo()
6241 elif self.op.kind == constants.TAG_NODE:
6242 self.target = self.cfg.GetNodeInfo(self.op.name)
6243 elif self.op.kind == constants.TAG_INSTANCE:
6244 self.target = self.cfg.GetInstanceInfo(self.op.name)
6246 raise errors.OpPrereqError("Wrong tag type requested (%s)" %
6250 class LUGetTags(TagsLU):
6251 """Returns the tags of a given object.
6254 _OP_REQP = ["kind", "name"]
6257 def Exec(self, feedback_fn):
6258 """Returns the tag list.
6261 return list(self.target.GetTags())
6264 class LUSearchTags(NoHooksLU):
6265 """Searches the tags for a given pattern.
6268 _OP_REQP = ["pattern"]
6271 def ExpandNames(self):
6272 self.needed_locks = {}
6274 def CheckPrereq(self):
6275 """Check prerequisites.
6277 This checks the pattern passed for validity by compiling it.
6281 self.re = re.compile(self.op.pattern)
6282 except re.error, err:
6283 raise errors.OpPrereqError("Invalid search pattern '%s': %s" %
6284 (self.op.pattern, err))
6286 def Exec(self, feedback_fn):
6287 """Returns the tag list.
6291 tgts = [("/cluster", cfg.GetClusterInfo())]
6292 ilist = cfg.GetAllInstancesInfo().values()
6293 tgts.extend([("/instances/%s" % i.name, i) for i in ilist])
6294 nlist = cfg.GetAllNodesInfo().values()
6295 tgts.extend([("/nodes/%s" % n.name, n) for n in nlist])
6297 for path, target in tgts:
6298 for tag in target.GetTags():
6299 if self.re.search(tag):
6300 results.append((path, tag))
6304 class LUAddTags(TagsLU):
6305 """Sets a tag on a given object.
6308 _OP_REQP = ["kind", "name", "tags"]
6311 def CheckPrereq(self):
6312 """Check prerequisites.
6314 This checks the type and length of the tag name and value.
6317 TagsLU.CheckPrereq(self)
6318 for tag in self.op.tags:
6319 objects.TaggableObject.ValidateTag(tag)
6321 def Exec(self, feedback_fn):
6326 for tag in self.op.tags:
6327 self.target.AddTag(tag)
6328 except errors.TagError, err:
6329 raise errors.OpExecError("Error while setting tag: %s" % str(err))
6331 self.cfg.Update(self.target)
6332 except errors.ConfigurationError:
6333 raise errors.OpRetryError("There has been a modification to the"
6334 " config file and the operation has been"
6335 " aborted. Please retry.")
6338 class LUDelTags(TagsLU):
6339 """Delete a list of tags from a given object.
6342 _OP_REQP = ["kind", "name", "tags"]
6345 def CheckPrereq(self):
6346 """Check prerequisites.
6348 This checks that we have the given tag.
6351 TagsLU.CheckPrereq(self)
6352 for tag in self.op.tags:
6353 objects.TaggableObject.ValidateTag(tag)
6354 del_tags = frozenset(self.op.tags)
6355 cur_tags = self.target.GetTags()
6356 if not del_tags <= cur_tags:
6357 diff_tags = del_tags - cur_tags
6358 diff_names = ["'%s'" % tag for tag in diff_tags]
6360 raise errors.OpPrereqError("Tag(s) %s not found" %
6361 (",".join(diff_names)))
6363 def Exec(self, feedback_fn):
6364 """Remove the tag from the object.
6367 for tag in self.op.tags:
6368 self.target.RemoveTag(tag)
6370 self.cfg.Update(self.target)
6371 except errors.ConfigurationError:
6372 raise errors.OpRetryError("There has been a modification to the"
6373 " config file and the operation has been"
6374 " aborted. Please retry.")
6377 class LUTestDelay(NoHooksLU):
6378 """Sleep for a specified amount of time.
6380 This LU sleeps on the master and/or nodes for a specified amount of
6384 _OP_REQP = ["duration", "on_master", "on_nodes"]
6387 def ExpandNames(self):
6388 """Expand names and set required locks.
6390 This expands the node list, if any.
6393 self.needed_locks = {}
6394 if self.op.on_nodes:
6395 # _GetWantedNodes can be used here, but is not always appropriate to use
6396 # this way in ExpandNames. Check LogicalUnit.ExpandNames docstring for
6398 self.op.on_nodes = _GetWantedNodes(self, self.op.on_nodes)
6399 self.needed_locks[locking.LEVEL_NODE] = self.op.on_nodes
6401 def CheckPrereq(self):
6402 """Check prerequisites.
6406 def Exec(self, feedback_fn):
6407 """Do the actual sleep.
6410 if self.op.on_master:
6411 if not utils.TestDelay(self.op.duration):
6412 raise errors.OpExecError("Error during master delay test")
6413 if self.op.on_nodes:
6414 result = self.rpc.call_test_delay(self.op.on_nodes, self.op.duration)
6416 raise errors.OpExecError("Complete failure from rpc call")
6417 for node, node_result in result.items():
6419 if not node_result.data:
6420 raise errors.OpExecError("Failure during rpc call to node %s,"
6421 " result: %s" % (node, node_result.data))
6424 class IAllocator(object):
6425 """IAllocator framework.
6427 An IAllocator instance has three sets of attributes:
6428 - cfg that is needed to query the cluster
6429 - input data (all members of the _KEYS class attribute are required)
6430 - four buffer attributes (in|out_data|text), that represent the
6431 input (to the external script) in text and data structure format,
6432 and the output from it, again in two formats
6433 - the result variables from the script (success, info, nodes) for
6438 "mem_size", "disks", "disk_template",
6439 "os", "tags", "nics", "vcpus", "hypervisor",
6445 def __init__(self, lu, mode, name, **kwargs):
6447 # init buffer variables
6448 self.in_text = self.out_text = self.in_data = self.out_data = None
6449 # init all input fields so that pylint is happy
6452 self.mem_size = self.disks = self.disk_template = None
6453 self.os = self.tags = self.nics = self.vcpus = None
6454 self.hypervisor = None
6455 self.relocate_from = None
6457 self.required_nodes = None
6458 # init result fields
6459 self.success = self.info = self.nodes = None
6460 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
6461 keyset = self._ALLO_KEYS
6462 elif self.mode == constants.IALLOCATOR_MODE_RELOC:
6463 keyset = self._RELO_KEYS
6465 raise errors.ProgrammerError("Unknown mode '%s' passed to the"
6466 " IAllocator" % self.mode)
6468 if key not in keyset:
6469 raise errors.ProgrammerError("Invalid input parameter '%s' to"
6470 " IAllocator" % key)
6471 setattr(self, key, kwargs[key])
6473 if key not in kwargs:
6474 raise errors.ProgrammerError("Missing input parameter '%s' to"
6475 " IAllocator" % key)
6476 self._BuildInputData()
6478 def _ComputeClusterData(self):
6479 """Compute the generic allocator input data.
6481 This is the data that is independent of the actual operation.
6485 cluster_info = cfg.GetClusterInfo()
6489 "cluster_name": cfg.GetClusterName(),
6490 "cluster_tags": list(cluster_info.GetTags()),
6491 "enabled_hypervisors": list(cluster_info.enabled_hypervisors),
6492 # we don't have job IDs
6494 iinfo = cfg.GetAllInstancesInfo().values()
6495 i_list = [(inst, cluster_info.FillBE(inst)) for inst in iinfo]
6499 node_list = cfg.GetNodeList()
6501 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
6502 hypervisor_name = self.hypervisor
6503 elif self.mode == constants.IALLOCATOR_MODE_RELOC:
6504 hypervisor_name = cfg.GetInstanceInfo(self.name).hypervisor
6506 node_data = self.lu.rpc.call_node_info(node_list, cfg.GetVGName(),
6508 node_iinfo = self.lu.rpc.call_all_instances_info(node_list,
6509 cluster_info.enabled_hypervisors)
6510 for nname, nresult in node_data.items():
6511 # first fill in static (config-based) values
6512 ninfo = cfg.GetNodeInfo(nname)
6514 "tags": list(ninfo.GetTags()),
6515 "primary_ip": ninfo.primary_ip,
6516 "secondary_ip": ninfo.secondary_ip,
6517 "offline": ninfo.offline,
6518 "drained": ninfo.drained,
6519 "master_candidate": ninfo.master_candidate,
6522 if not ninfo.offline:
6524 if not isinstance(nresult.data, dict):
6525 raise errors.OpExecError("Can't get data for node %s" % nname)
6526 remote_info = nresult.data
6527 for attr in ['memory_total', 'memory_free', 'memory_dom0',
6528 'vg_size', 'vg_free', 'cpu_total']:
6529 if attr not in remote_info:
6530 raise errors.OpExecError("Node '%s' didn't return attribute"
6531 " '%s'" % (nname, attr))
6533 remote_info[attr] = int(remote_info[attr])
6534 except ValueError, err:
6535 raise errors.OpExecError("Node '%s' returned invalid value"
6536 " for '%s': %s" % (nname, attr, err))
6537 # compute memory used by primary instances
6538 i_p_mem = i_p_up_mem = 0
6539 for iinfo, beinfo in i_list:
6540 if iinfo.primary_node == nname:
6541 i_p_mem += beinfo[constants.BE_MEMORY]
6542 if iinfo.name not in node_iinfo[nname].data:
6545 i_used_mem = int(node_iinfo[nname].data[iinfo.name]['memory'])
6546 i_mem_diff = beinfo[constants.BE_MEMORY] - i_used_mem
6547 remote_info['memory_free'] -= max(0, i_mem_diff)
6550 i_p_up_mem += beinfo[constants.BE_MEMORY]
6552 # compute memory used by instances
6554 "total_memory": remote_info['memory_total'],
6555 "reserved_memory": remote_info['memory_dom0'],
6556 "free_memory": remote_info['memory_free'],
6557 "total_disk": remote_info['vg_size'],
6558 "free_disk": remote_info['vg_free'],
6559 "total_cpus": remote_info['cpu_total'],
6560 "i_pri_memory": i_p_mem,
6561 "i_pri_up_memory": i_p_up_mem,
6565 node_results[nname] = pnr
6566 data["nodes"] = node_results
6570 for iinfo, beinfo in i_list:
6571 nic_data = [{"mac": n.mac, "ip": n.ip, "bridge": n.bridge}
6572 for n in iinfo.nics]
6574 "tags": list(iinfo.GetTags()),
6575 "admin_up": iinfo.admin_up,
6576 "vcpus": beinfo[constants.BE_VCPUS],
6577 "memory": beinfo[constants.BE_MEMORY],
6579 "nodes": [iinfo.primary_node] + list(iinfo.secondary_nodes),
6581 "disks": [{"size": dsk.size, "mode": dsk.mode} for dsk in iinfo.disks],
6582 "disk_template": iinfo.disk_template,
6583 "hypervisor": iinfo.hypervisor,
6585 instance_data[iinfo.name] = pir
6587 data["instances"] = instance_data
6591 def _AddNewInstance(self):
6592 """Add new instance data to allocator structure.
6594 This in combination with _AllocatorGetClusterData will create the
6595 correct structure needed as input for the allocator.
6597 The checks for the completeness of the opcode must have already been
6603 disk_space = _ComputeDiskSize(self.disk_template, self.disks)
6605 if self.disk_template in constants.DTS_NET_MIRROR:
6606 self.required_nodes = 2
6608 self.required_nodes = 1
6612 "disk_template": self.disk_template,
6615 "vcpus": self.vcpus,
6616 "memory": self.mem_size,
6617 "disks": self.disks,
6618 "disk_space_total": disk_space,
6620 "required_nodes": self.required_nodes,
6622 data["request"] = request
6624 def _AddRelocateInstance(self):
6625 """Add relocate instance data to allocator structure.
6627 This in combination with _IAllocatorGetClusterData will create the
6628 correct structure needed as input for the allocator.
6630 The checks for the completeness of the opcode must have already been
6634 instance = self.lu.cfg.GetInstanceInfo(self.name)
6635 if instance is None:
6636 raise errors.ProgrammerError("Unknown instance '%s' passed to"
6637 " IAllocator" % self.name)
6639 if instance.disk_template not in constants.DTS_NET_MIRROR:
6640 raise errors.OpPrereqError("Can't relocate non-mirrored instances")
6642 if len(instance.secondary_nodes) != 1:
6643 raise errors.OpPrereqError("Instance has not exactly one secondary node")
6645 self.required_nodes = 1
6646 disk_sizes = [{'size': disk.size} for disk in instance.disks]
6647 disk_space = _ComputeDiskSize(instance.disk_template, disk_sizes)
6652 "disk_space_total": disk_space,
6653 "required_nodes": self.required_nodes,
6654 "relocate_from": self.relocate_from,
6656 self.in_data["request"] = request
6658 def _BuildInputData(self):
6659 """Build input data structures.
6662 self._ComputeClusterData()
6664 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
6665 self._AddNewInstance()
6667 self._AddRelocateInstance()
6669 self.in_text = serializer.Dump(self.in_data)
6671 def Run(self, name, validate=True, call_fn=None):
6672 """Run an instance allocator and return the results.
6676 call_fn = self.lu.rpc.call_iallocator_runner
6679 result = call_fn(self.lu.cfg.GetMasterNode(), name, self.in_text)
6682 if not isinstance(result.data, (list, tuple)) or len(result.data) != 4:
6683 raise errors.OpExecError("Invalid result from master iallocator runner")
6685 rcode, stdout, stderr, fail = result.data
6687 if rcode == constants.IARUN_NOTFOUND:
6688 raise errors.OpExecError("Can't find allocator '%s'" % name)
6689 elif rcode == constants.IARUN_FAILURE:
6690 raise errors.OpExecError("Instance allocator call failed: %s,"
6691 " output: %s" % (fail, stdout+stderr))
6692 self.out_text = stdout
6694 self._ValidateResult()
6696 def _ValidateResult(self):
6697 """Process the allocator results.
6699 This will process and if successful save the result in
6700 self.out_data and the other parameters.
6704 rdict = serializer.Load(self.out_text)
6705 except Exception, err:
6706 raise errors.OpExecError("Can't parse iallocator results: %s" % str(err))
6708 if not isinstance(rdict, dict):
6709 raise errors.OpExecError("Can't parse iallocator results: not a dict")
6711 for key in "success", "info", "nodes":
6712 if key not in rdict:
6713 raise errors.OpExecError("Can't parse iallocator results:"
6714 " missing key '%s'" % key)
6715 setattr(self, key, rdict[key])
6717 if not isinstance(rdict["nodes"], list):
6718 raise errors.OpExecError("Can't parse iallocator results: 'nodes' key"
6720 self.out_data = rdict
6723 class LUTestAllocator(NoHooksLU):
6724 """Run allocator tests.
6726 This LU runs the allocator tests
6729 _OP_REQP = ["direction", "mode", "name"]
6731 def CheckPrereq(self):
6732 """Check prerequisites.
6734 This checks the opcode parameters depending on the director and mode test.
6737 if self.op.mode == constants.IALLOCATOR_MODE_ALLOC:
6738 for attr in ["name", "mem_size", "disks", "disk_template",
6739 "os", "tags", "nics", "vcpus"]:
6740 if not hasattr(self.op, attr):
6741 raise errors.OpPrereqError("Missing attribute '%s' on opcode input" %
6743 iname = self.cfg.ExpandInstanceName(self.op.name)
6744 if iname is not None:
6745 raise errors.OpPrereqError("Instance '%s' already in the cluster" %
6747 if not isinstance(self.op.nics, list):
6748 raise errors.OpPrereqError("Invalid parameter 'nics'")
6749 for row in self.op.nics:
6750 if (not isinstance(row, dict) or
6753 "bridge" not in row):
6754 raise errors.OpPrereqError("Invalid contents of the"
6755 " 'nics' parameter")
6756 if not isinstance(self.op.disks, list):
6757 raise errors.OpPrereqError("Invalid parameter 'disks'")
6758 for row in self.op.disks:
6759 if (not isinstance(row, dict) or
6760 "size" not in row or
6761 not isinstance(row["size"], int) or
6762 "mode" not in row or
6763 row["mode"] not in ['r', 'w']):
6764 raise errors.OpPrereqError("Invalid contents of the"
6765 " 'disks' parameter")
6766 if not hasattr(self.op, "hypervisor") or self.op.hypervisor is None:
6767 self.op.hypervisor = self.cfg.GetHypervisorType()
6768 elif self.op.mode == constants.IALLOCATOR_MODE_RELOC:
6769 if not hasattr(self.op, "name"):
6770 raise errors.OpPrereqError("Missing attribute 'name' on opcode input")
6771 fname = self.cfg.ExpandInstanceName(self.op.name)
6773 raise errors.OpPrereqError("Instance '%s' not found for relocation" %
6775 self.op.name = fname
6776 self.relocate_from = self.cfg.GetInstanceInfo(fname).secondary_nodes
6778 raise errors.OpPrereqError("Invalid test allocator mode '%s'" %
6781 if self.op.direction == constants.IALLOCATOR_DIR_OUT:
6782 if not hasattr(self.op, "allocator") or self.op.allocator is None:
6783 raise errors.OpPrereqError("Missing allocator name")
6784 elif self.op.direction != constants.IALLOCATOR_DIR_IN:
6785 raise errors.OpPrereqError("Wrong allocator test '%s'" %
6788 def Exec(self, feedback_fn):
6789 """Run the allocator test.
6792 if self.op.mode == constants.IALLOCATOR_MODE_ALLOC:
6793 ial = IAllocator(self,
6796 mem_size=self.op.mem_size,
6797 disks=self.op.disks,
6798 disk_template=self.op.disk_template,
6802 vcpus=self.op.vcpus,
6803 hypervisor=self.op.hypervisor,
6806 ial = IAllocator(self,
6809 relocate_from=list(self.relocate_from),
6812 if self.op.direction == constants.IALLOCATOR_DIR_IN:
6813 result = ial.in_text
6815 ial.Run(self.op.allocator, validate=False)
6816 result = ial.out_text