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 = lu.cfg.GetInstanceList()
396 return utils.NiceSort(wanted)
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 nodes is offline
440 if lu.cfg.GetNodeInfo(node).offline:
441 raise errors.OpPrereqError("Can't use offline node %s" % node)
444 def _BuildInstanceHookEnv(name, primary_node, secondary_nodes, os_type, status,
445 memory, vcpus, nics):
446 """Builds instance related env variables for hooks
448 This builds the hook environment from individual variables.
451 @param name: the name of the instance
452 @type primary_node: string
453 @param primary_node: the name of the instance's primary node
454 @type secondary_nodes: list
455 @param secondary_nodes: list of secondary nodes as strings
456 @type os_type: string
457 @param os_type: the name of the instance's OS
459 @param status: the desired status of the instances
461 @param memory: the memory size of the instance
463 @param vcpus: the count of VCPUs the instance has
465 @param nics: list of tuples (ip, bridge, mac) representing
466 the NICs the instance has
468 @return: the hook environment for this instance
473 "INSTANCE_NAME": name,
474 "INSTANCE_PRIMARY": primary_node,
475 "INSTANCE_SECONDARIES": " ".join(secondary_nodes),
476 "INSTANCE_OS_TYPE": os_type,
477 "INSTANCE_STATUS": status,
478 "INSTANCE_MEMORY": memory,
479 "INSTANCE_VCPUS": vcpus,
483 nic_count = len(nics)
484 for idx, (ip, bridge, mac) in enumerate(nics):
487 env["INSTANCE_NIC%d_IP" % idx] = ip
488 env["INSTANCE_NIC%d_BRIDGE" % idx] = bridge
489 env["INSTANCE_NIC%d_HWADDR" % idx] = mac
493 env["INSTANCE_NIC_COUNT"] = nic_count
498 def _BuildInstanceHookEnvByObject(lu, instance, override=None):
499 """Builds instance related env variables for hooks from an object.
501 @type lu: L{LogicalUnit}
502 @param lu: the logical unit on whose behalf we execute
503 @type instance: L{objects.Instance}
504 @param instance: the instance for which we should build the
507 @param override: dictionary with key/values that will override
510 @return: the hook environment dictionary
513 bep = lu.cfg.GetClusterInfo().FillBE(instance)
515 'name': instance.name,
516 'primary_node': instance.primary_node,
517 'secondary_nodes': instance.secondary_nodes,
518 'os_type': instance.os,
519 'status': instance.os,
520 'memory': bep[constants.BE_MEMORY],
521 'vcpus': bep[constants.BE_VCPUS],
522 'nics': [(nic.ip, nic.bridge, nic.mac) for nic in instance.nics],
525 args.update(override)
526 return _BuildInstanceHookEnv(**args)
529 def _AdjustCandidatePool(lu):
530 """Adjust the candidate pool after node operations.
533 mod_list = lu.cfg.MaintainCandidatePool()
535 lu.LogInfo("Promoted nodes to master candidate role: %s",
536 ", ".join(node.name for node in mod_list))
537 for name in mod_list:
538 lu.context.ReaddNode(name)
539 mc_now, mc_max = lu.cfg.GetMasterCandidateStats()
541 lu.LogInfo("Note: more nodes are candidates (%d) than desired (%d)" %
545 def _CheckInstanceBridgesExist(lu, instance):
546 """Check that the brigdes needed by an instance exist.
549 # check bridges existance
550 brlist = [nic.bridge for nic in instance.nics]
551 result = lu.rpc.call_bridges_exist(instance.primary_node, brlist)
554 raise errors.OpPrereqError("One or more target bridges %s does not"
555 " exist on destination node '%s'" %
556 (brlist, instance.primary_node))
559 class LUDestroyCluster(NoHooksLU):
560 """Logical unit for destroying the cluster.
565 def CheckPrereq(self):
566 """Check prerequisites.
568 This checks whether the cluster is empty.
570 Any errors are signalled by raising errors.OpPrereqError.
573 master = self.cfg.GetMasterNode()
575 nodelist = self.cfg.GetNodeList()
576 if len(nodelist) != 1 or nodelist[0] != master:
577 raise errors.OpPrereqError("There are still %d node(s) in"
578 " this cluster." % (len(nodelist) - 1))
579 instancelist = self.cfg.GetInstanceList()
581 raise errors.OpPrereqError("There are still %d instance(s) in"
582 " this cluster." % len(instancelist))
584 def Exec(self, feedback_fn):
585 """Destroys the cluster.
588 master = self.cfg.GetMasterNode()
589 result = self.rpc.call_node_stop_master(master, False)
592 raise errors.OpExecError("Could not disable the master role")
593 priv_key, pub_key, _ = ssh.GetUserFiles(constants.GANETI_RUNAS)
594 utils.CreateBackup(priv_key)
595 utils.CreateBackup(pub_key)
599 class LUVerifyCluster(LogicalUnit):
600 """Verifies the cluster status.
603 HPATH = "cluster-verify"
604 HTYPE = constants.HTYPE_CLUSTER
605 _OP_REQP = ["skip_checks"]
608 def ExpandNames(self):
609 self.needed_locks = {
610 locking.LEVEL_NODE: locking.ALL_SET,
611 locking.LEVEL_INSTANCE: locking.ALL_SET,
613 self.share_locks = dict(((i, 1) for i in locking.LEVELS))
615 def _VerifyNode(self, nodeinfo, file_list, local_cksum,
616 node_result, feedback_fn, master_files):
617 """Run multiple tests against a node.
621 - compares ganeti version
622 - checks vg existance and size > 20G
623 - checks config file checksum
624 - checks ssh to other nodes
626 @type nodeinfo: L{objects.Node}
627 @param nodeinfo: the node to check
628 @param file_list: required list of files
629 @param local_cksum: dictionary of local files and their checksums
630 @param node_result: the results from the node
631 @param feedback_fn: function used to accumulate results
632 @param master_files: list of files that only masters should have
637 # main result, node_result should be a non-empty dict
638 if not node_result or not isinstance(node_result, dict):
639 feedback_fn(" - ERROR: unable to verify node %s." % (node,))
642 # compares ganeti version
643 local_version = constants.PROTOCOL_VERSION
644 remote_version = node_result.get('version', None)
645 if not remote_version:
646 feedback_fn(" - ERROR: connection to %s failed" % (node))
649 if local_version != remote_version:
650 feedback_fn(" - ERROR: sw version mismatch: master %s, node(%s) %s" %
651 (local_version, node, remote_version))
654 # checks vg existance and size > 20G
657 vglist = node_result.get(constants.NV_VGLIST, None)
659 feedback_fn(" - ERROR: unable to check volume groups on node %s." %
663 vgstatus = utils.CheckVolumeGroupSize(vglist, self.cfg.GetVGName(),
664 constants.MIN_VG_SIZE)
666 feedback_fn(" - ERROR: %s on node %s" % (vgstatus, node))
669 # checks config file checksum
671 remote_cksum = node_result.get(constants.NV_FILELIST, None)
672 if not isinstance(remote_cksum, dict):
674 feedback_fn(" - ERROR: node hasn't returned file checksum data")
676 for file_name in file_list:
677 node_is_mc = nodeinfo.master_candidate
678 must_have_file = file_name not in master_files
679 if file_name not in remote_cksum:
680 if node_is_mc or must_have_file:
682 feedback_fn(" - ERROR: file '%s' missing" % file_name)
683 elif remote_cksum[file_name] != local_cksum[file_name]:
684 if node_is_mc or must_have_file:
686 feedback_fn(" - ERROR: file '%s' has wrong checksum" % file_name)
688 # not candidate and this is not a must-have file
690 feedback_fn(" - ERROR: non master-candidate has old/wrong file"
693 # all good, except non-master/non-must have combination
694 if not node_is_mc and not must_have_file:
695 feedback_fn(" - ERROR: file '%s' should not exist on non master"
696 " candidates" % file_name)
700 if constants.NV_NODELIST not in node_result:
702 feedback_fn(" - ERROR: node hasn't returned node ssh connectivity data")
704 if node_result[constants.NV_NODELIST]:
706 for node in node_result[constants.NV_NODELIST]:
707 feedback_fn(" - ERROR: ssh communication with node '%s': %s" %
708 (node, node_result[constants.NV_NODELIST][node]))
710 if constants.NV_NODENETTEST not in node_result:
712 feedback_fn(" - ERROR: node hasn't returned node tcp connectivity data")
714 if node_result[constants.NV_NODENETTEST]:
716 nlist = utils.NiceSort(node_result[constants.NV_NODENETTEST].keys())
718 feedback_fn(" - ERROR: tcp communication with node '%s': %s" %
719 (node, node_result[constants.NV_NODENETTEST][node]))
721 hyp_result = node_result.get(constants.NV_HYPERVISOR, None)
722 if isinstance(hyp_result, dict):
723 for hv_name, hv_result in hyp_result.iteritems():
724 if hv_result is not None:
725 feedback_fn(" - ERROR: hypervisor %s verify failure: '%s'" %
726 (hv_name, hv_result))
729 def _VerifyInstance(self, instance, instanceconfig, node_vol_is,
730 node_instance, feedback_fn, n_offline):
731 """Verify an instance.
733 This function checks to see if the required block devices are
734 available on the instance's node.
739 node_current = instanceconfig.primary_node
742 instanceconfig.MapLVsByNode(node_vol_should)
744 for node in node_vol_should:
745 if node in n_offline:
746 # ignore missing volumes on offline nodes
748 for volume in node_vol_should[node]:
749 if node not in node_vol_is or volume not in node_vol_is[node]:
750 feedback_fn(" - ERROR: volume %s missing on node %s" %
754 if not instanceconfig.status == 'down':
755 if ((node_current not in node_instance or
756 not instance in node_instance[node_current]) and
757 node_current not in n_offline):
758 feedback_fn(" - ERROR: instance %s not running on node %s" %
759 (instance, node_current))
762 for node in node_instance:
763 if (not node == node_current):
764 if instance in node_instance[node]:
765 feedback_fn(" - ERROR: instance %s should not run on node %s" %
771 def _VerifyOrphanVolumes(self, node_vol_should, node_vol_is, feedback_fn):
772 """Verify if there are any unknown volumes in the cluster.
774 The .os, .swap and backup volumes are ignored. All other volumes are
780 for node in node_vol_is:
781 for volume in node_vol_is[node]:
782 if node not in node_vol_should or volume not in node_vol_should[node]:
783 feedback_fn(" - ERROR: volume %s on node %s should not exist" %
788 def _VerifyOrphanInstances(self, instancelist, node_instance, feedback_fn):
789 """Verify the list of running instances.
791 This checks what instances are running but unknown to the cluster.
795 for node in node_instance:
796 for runninginstance in node_instance[node]:
797 if runninginstance not in instancelist:
798 feedback_fn(" - ERROR: instance %s on node %s should not exist" %
799 (runninginstance, node))
803 def _VerifyNPlusOneMemory(self, node_info, instance_cfg, feedback_fn):
804 """Verify N+1 Memory Resilience.
806 Check that if one single node dies we can still start all the instances it
812 for node, nodeinfo in node_info.iteritems():
813 # This code checks that every node which is now listed as secondary has
814 # enough memory to host all instances it is supposed to should a single
815 # other node in the cluster fail.
816 # FIXME: not ready for failover to an arbitrary node
817 # FIXME: does not support file-backed instances
818 # WARNING: we currently take into account down instances as well as up
819 # ones, considering that even if they're down someone might want to start
820 # them even in the event of a node failure.
821 for prinode, instances in nodeinfo['sinst-by-pnode'].iteritems():
823 for instance in instances:
824 bep = self.cfg.GetClusterInfo().FillBE(instance_cfg[instance])
825 if bep[constants.BE_AUTO_BALANCE]:
826 needed_mem += bep[constants.BE_MEMORY]
827 if nodeinfo['mfree'] < needed_mem:
828 feedback_fn(" - ERROR: not enough memory on node %s to accomodate"
829 " failovers should node %s fail" % (node, prinode))
833 def CheckPrereq(self):
834 """Check prerequisites.
836 Transform the list of checks we're going to skip into a set and check that
837 all its members are valid.
840 self.skip_set = frozenset(self.op.skip_checks)
841 if not constants.VERIFY_OPTIONAL_CHECKS.issuperset(self.skip_set):
842 raise errors.OpPrereqError("Invalid checks to be skipped specified")
844 def BuildHooksEnv(self):
847 Cluster-Verify hooks just rone in the post phase and their failure makes
848 the output be logged in the verify output and the verification to fail.
851 all_nodes = self.cfg.GetNodeList()
852 # TODO: populate the environment with useful information for verify hooks
854 return env, [], all_nodes
856 def Exec(self, feedback_fn):
857 """Verify integrity of cluster, performing various test on nodes.
861 feedback_fn("* Verifying global settings")
862 for msg in self.cfg.VerifyConfig():
863 feedback_fn(" - ERROR: %s" % msg)
865 vg_name = self.cfg.GetVGName()
866 hypervisors = self.cfg.GetClusterInfo().enabled_hypervisors
867 nodelist = utils.NiceSort(self.cfg.GetNodeList())
868 nodeinfo = [self.cfg.GetNodeInfo(nname) for nname in nodelist]
869 instancelist = utils.NiceSort(self.cfg.GetInstanceList())
870 i_non_redundant = [] # Non redundant instances
871 i_non_a_balanced = [] # Non auto-balanced instances
872 n_offline = [] # List of offline nodes
878 # FIXME: verify OS list
880 master_files = [constants.CLUSTER_CONF_FILE]
882 file_names = ssconf.SimpleStore().GetFileList()
883 file_names.append(constants.SSL_CERT_FILE)
884 file_names.append(constants.RAPI_CERT_FILE)
885 file_names.extend(master_files)
887 local_checksums = utils.FingerprintFiles(file_names)
889 feedback_fn("* Gathering data (%d nodes)" % len(nodelist))
890 node_verify_param = {
891 constants.NV_FILELIST: file_names,
892 constants.NV_NODELIST: [node.name for node in nodeinfo
893 if not node.offline],
894 constants.NV_HYPERVISOR: hypervisors,
895 constants.NV_NODENETTEST: [(node.name, node.primary_ip,
896 node.secondary_ip) for node in nodeinfo
897 if not node.offline],
898 constants.NV_LVLIST: vg_name,
899 constants.NV_INSTANCELIST: hypervisors,
900 constants.NV_VGLIST: None,
901 constants.NV_VERSION: None,
902 constants.NV_HVINFO: self.cfg.GetHypervisorType(),
904 all_nvinfo = self.rpc.call_node_verify(nodelist, node_verify_param,
905 self.cfg.GetClusterName())
907 cluster = self.cfg.GetClusterInfo()
908 master_node = self.cfg.GetMasterNode()
909 for node_i in nodeinfo:
911 nresult = all_nvinfo[node].data
914 feedback_fn("* Skipping offline node %s" % (node,))
915 n_offline.append(node)
918 if node == master_node:
920 elif node_i.master_candidate:
921 ntype = "master candidate"
924 feedback_fn("* Verifying node %s (%s)" % (node, ntype))
926 if all_nvinfo[node].failed or not isinstance(nresult, dict):
927 feedback_fn(" - ERROR: connection to %s failed" % (node,))
931 result = self._VerifyNode(node_i, file_names, local_checksums,
932 nresult, feedback_fn, master_files)
935 lvdata = nresult.get(constants.NV_LVLIST, "Missing LV data")
936 if isinstance(lvdata, basestring):
937 feedback_fn(" - ERROR: LVM problem on node %s: %s" %
938 (node, lvdata.encode('string_escape')))
940 node_volume[node] = {}
941 elif not isinstance(lvdata, dict):
942 feedback_fn(" - ERROR: connection to %s failed (lvlist)" % (node,))
946 node_volume[node] = lvdata
949 idata = nresult.get(constants.NV_INSTANCELIST, None)
950 if not isinstance(idata, list):
951 feedback_fn(" - ERROR: connection to %s failed (instancelist)" %
956 node_instance[node] = idata
959 nodeinfo = nresult.get(constants.NV_HVINFO, None)
960 if not isinstance(nodeinfo, dict):
961 feedback_fn(" - ERROR: connection to %s failed (hvinfo)" % (node,))
967 "mfree": int(nodeinfo['memory_free']),
968 "dfree": int(nresult[constants.NV_VGLIST][vg_name]),
971 # dictionary holding all instances this node is secondary for,
972 # grouped by their primary node. Each key is a cluster node, and each
973 # value is a list of instances which have the key as primary and the
974 # current node as secondary. this is handy to calculate N+1 memory
975 # availability if you can only failover from a primary to its
977 "sinst-by-pnode": {},
980 feedback_fn(" - ERROR: invalid value returned from node %s" % (node,))
986 for instance in instancelist:
987 feedback_fn("* Verifying instance %s" % instance)
988 inst_config = self.cfg.GetInstanceInfo(instance)
989 result = self._VerifyInstance(instance, inst_config, node_volume,
990 node_instance, feedback_fn, n_offline)
992 inst_nodes_offline = []
994 inst_config.MapLVsByNode(node_vol_should)
996 instance_cfg[instance] = inst_config
998 pnode = inst_config.primary_node
999 if pnode in node_info:
1000 node_info[pnode]['pinst'].append(instance)
1001 elif pnode not in n_offline:
1002 feedback_fn(" - ERROR: instance %s, connection to primary node"
1003 " %s failed" % (instance, pnode))
1006 if pnode in n_offline:
1007 inst_nodes_offline.append(pnode)
1009 # If the instance is non-redundant we cannot survive losing its primary
1010 # node, so we are not N+1 compliant. On the other hand we have no disk
1011 # templates with more than one secondary so that situation is not well
1013 # FIXME: does not support file-backed instances
1014 if len(inst_config.secondary_nodes) == 0:
1015 i_non_redundant.append(instance)
1016 elif len(inst_config.secondary_nodes) > 1:
1017 feedback_fn(" - WARNING: multiple secondaries for instance %s"
1020 if not cluster.FillBE(inst_config)[constants.BE_AUTO_BALANCE]:
1021 i_non_a_balanced.append(instance)
1023 for snode in inst_config.secondary_nodes:
1024 if snode in node_info:
1025 node_info[snode]['sinst'].append(instance)
1026 if pnode not in node_info[snode]['sinst-by-pnode']:
1027 node_info[snode]['sinst-by-pnode'][pnode] = []
1028 node_info[snode]['sinst-by-pnode'][pnode].append(instance)
1029 elif snode not in n_offline:
1030 feedback_fn(" - ERROR: instance %s, connection to secondary node"
1031 " %s failed" % (instance, snode))
1033 if snode in n_offline:
1034 inst_nodes_offline.append(snode)
1036 if inst_nodes_offline:
1037 # warn that the instance lives on offline nodes, and set bad=True
1038 feedback_fn(" - ERROR: instance lives on offline node(s) %s" %
1039 ", ".join(inst_nodes_offline))
1042 feedback_fn("* Verifying orphan volumes")
1043 result = self._VerifyOrphanVolumes(node_vol_should, node_volume,
1047 feedback_fn("* Verifying remaining instances")
1048 result = self._VerifyOrphanInstances(instancelist, node_instance,
1052 if constants.VERIFY_NPLUSONE_MEM not in self.skip_set:
1053 feedback_fn("* Verifying N+1 Memory redundancy")
1054 result = self._VerifyNPlusOneMemory(node_info, instance_cfg, feedback_fn)
1057 feedback_fn("* Other Notes")
1059 feedback_fn(" - NOTICE: %d non-redundant instance(s) found."
1060 % len(i_non_redundant))
1062 if i_non_a_balanced:
1063 feedback_fn(" - NOTICE: %d non-auto-balanced instance(s) found."
1064 % len(i_non_a_balanced))
1067 feedback_fn(" - NOTICE: %d offline node(s) found." % len(n_offline))
1071 def HooksCallBack(self, phase, hooks_results, feedback_fn, lu_result):
1072 """Analize the post-hooks' result
1074 This method analyses the hook result, handles it, and sends some
1075 nicely-formatted feedback back to the user.
1077 @param phase: one of L{constants.HOOKS_PHASE_POST} or
1078 L{constants.HOOKS_PHASE_PRE}; it denotes the hooks phase
1079 @param hooks_results: the results of the multi-node hooks rpc call
1080 @param feedback_fn: function used send feedback back to the caller
1081 @param lu_result: previous Exec result
1082 @return: the new Exec result, based on the previous result
1086 # We only really run POST phase hooks, and are only interested in
1088 if phase == constants.HOOKS_PHASE_POST:
1089 # Used to change hooks' output to proper indentation
1090 indent_re = re.compile('^', re.M)
1091 feedback_fn("* Hooks Results")
1092 if not hooks_results:
1093 feedback_fn(" - ERROR: general communication failure")
1096 for node_name in hooks_results:
1097 show_node_header = True
1098 res = hooks_results[node_name]
1099 if res.failed or res.data is False or not isinstance(res.data, list):
1101 # no need to warn or set fail return value
1103 feedback_fn(" Communication failure in hooks execution")
1106 for script, hkr, output in res.data:
1107 if hkr == constants.HKR_FAIL:
1108 # The node header is only shown once, if there are
1109 # failing hooks on that node
1110 if show_node_header:
1111 feedback_fn(" Node %s:" % node_name)
1112 show_node_header = False
1113 feedback_fn(" ERROR: Script %s failed, output:" % script)
1114 output = indent_re.sub(' ', output)
1115 feedback_fn("%s" % output)
1121 class LUVerifyDisks(NoHooksLU):
1122 """Verifies the cluster disks status.
1128 def ExpandNames(self):
1129 self.needed_locks = {
1130 locking.LEVEL_NODE: locking.ALL_SET,
1131 locking.LEVEL_INSTANCE: locking.ALL_SET,
1133 self.share_locks = dict(((i, 1) for i in locking.LEVELS))
1135 def CheckPrereq(self):
1136 """Check prerequisites.
1138 This has no prerequisites.
1143 def Exec(self, feedback_fn):
1144 """Verify integrity of cluster disks.
1147 result = res_nodes, res_nlvm, res_instances, res_missing = [], {}, [], {}
1149 vg_name = self.cfg.GetVGName()
1150 nodes = utils.NiceSort(self.cfg.GetNodeList())
1151 instances = [self.cfg.GetInstanceInfo(name)
1152 for name in self.cfg.GetInstanceList()]
1155 for inst in instances:
1157 if (inst.status != "up" or
1158 inst.disk_template not in constants.DTS_NET_MIRROR):
1160 inst.MapLVsByNode(inst_lvs)
1161 # transform { iname: {node: [vol,],},} to {(node, vol): iname}
1162 for node, vol_list in inst_lvs.iteritems():
1163 for vol in vol_list:
1164 nv_dict[(node, vol)] = inst
1169 node_lvs = self.rpc.call_volume_list(nodes, vg_name)
1174 lvs = node_lvs[node]
1177 self.LogWarning("Connection to node %s failed: %s" %
1181 if isinstance(lvs, basestring):
1182 logging.warning("Error enumerating LVs on node %s: %s", node, lvs)
1183 res_nlvm[node] = lvs
1184 elif not isinstance(lvs, dict):
1185 logging.warning("Connection to node %s failed or invalid data"
1187 res_nodes.append(node)
1190 for lv_name, (_, lv_inactive, lv_online) in lvs.iteritems():
1191 inst = nv_dict.pop((node, lv_name), None)
1192 if (not lv_online and inst is not None
1193 and inst.name not in res_instances):
1194 res_instances.append(inst.name)
1196 # any leftover items in nv_dict are missing LVs, let's arrange the
1198 for key, inst in nv_dict.iteritems():
1199 if inst.name not in res_missing:
1200 res_missing[inst.name] = []
1201 res_missing[inst.name].append(key)
1206 class LURenameCluster(LogicalUnit):
1207 """Rename the cluster.
1210 HPATH = "cluster-rename"
1211 HTYPE = constants.HTYPE_CLUSTER
1214 def BuildHooksEnv(self):
1219 "OP_TARGET": self.cfg.GetClusterName(),
1220 "NEW_NAME": self.op.name,
1222 mn = self.cfg.GetMasterNode()
1223 return env, [mn], [mn]
1225 def CheckPrereq(self):
1226 """Verify that the passed name is a valid one.
1229 hostname = utils.HostInfo(self.op.name)
1231 new_name = hostname.name
1232 self.ip = new_ip = hostname.ip
1233 old_name = self.cfg.GetClusterName()
1234 old_ip = self.cfg.GetMasterIP()
1235 if new_name == old_name and new_ip == old_ip:
1236 raise errors.OpPrereqError("Neither the name nor the IP address of the"
1237 " cluster has changed")
1238 if new_ip != old_ip:
1239 if utils.TcpPing(new_ip, constants.DEFAULT_NODED_PORT):
1240 raise errors.OpPrereqError("The given cluster IP address (%s) is"
1241 " reachable on the network. Aborting." %
1244 self.op.name = new_name
1246 def Exec(self, feedback_fn):
1247 """Rename the cluster.
1250 clustername = self.op.name
1253 # shutdown the master IP
1254 master = self.cfg.GetMasterNode()
1255 result = self.rpc.call_node_stop_master(master, False)
1256 if result.failed or not result.data:
1257 raise errors.OpExecError("Could not disable the master role")
1260 cluster = self.cfg.GetClusterInfo()
1261 cluster.cluster_name = clustername
1262 cluster.master_ip = ip
1263 self.cfg.Update(cluster)
1265 # update the known hosts file
1266 ssh.WriteKnownHostsFile(self.cfg, constants.SSH_KNOWN_HOSTS_FILE)
1267 node_list = self.cfg.GetNodeList()
1269 node_list.remove(master)
1272 result = self.rpc.call_upload_file(node_list,
1273 constants.SSH_KNOWN_HOSTS_FILE)
1274 for to_node, to_result in result.iteritems():
1275 if to_result.failed or not to_result.data:
1276 logging.error("Copy of file %s to node %s failed",
1277 constants.SSH_KNOWN_HOSTS_FILE, to_node)
1280 result = self.rpc.call_node_start_master(master, False)
1281 if result.failed or not result.data:
1282 self.LogWarning("Could not re-enable the master role on"
1283 " the master, please restart manually.")
1286 def _RecursiveCheckIfLVMBased(disk):
1287 """Check if the given disk or its children are lvm-based.
1289 @type disk: L{objects.Disk}
1290 @param disk: the disk to check
1292 @return: boolean indicating whether a LD_LV dev_type was found or not
1296 for chdisk in disk.children:
1297 if _RecursiveCheckIfLVMBased(chdisk):
1299 return disk.dev_type == constants.LD_LV
1302 class LUSetClusterParams(LogicalUnit):
1303 """Change the parameters of the cluster.
1306 HPATH = "cluster-modify"
1307 HTYPE = constants.HTYPE_CLUSTER
1311 def CheckParameters(self):
1315 if not hasattr(self.op, "candidate_pool_size"):
1316 self.op.candidate_pool_size = None
1317 if self.op.candidate_pool_size is not None:
1319 self.op.candidate_pool_size = int(self.op.candidate_pool_size)
1320 except ValueError, err:
1321 raise errors.OpPrereqError("Invalid candidate_pool_size value: %s" %
1323 if self.op.candidate_pool_size < 1:
1324 raise errors.OpPrereqError("At least one master candidate needed")
1326 def ExpandNames(self):
1327 # FIXME: in the future maybe other cluster params won't require checking on
1328 # all nodes to be modified.
1329 self.needed_locks = {
1330 locking.LEVEL_NODE: locking.ALL_SET,
1332 self.share_locks[locking.LEVEL_NODE] = 1
1334 def BuildHooksEnv(self):
1339 "OP_TARGET": self.cfg.GetClusterName(),
1340 "NEW_VG_NAME": self.op.vg_name,
1342 mn = self.cfg.GetMasterNode()
1343 return env, [mn], [mn]
1345 def CheckPrereq(self):
1346 """Check prerequisites.
1348 This checks whether the given params don't conflict and
1349 if the given volume group is valid.
1352 # FIXME: This only works because there is only one parameter that can be
1353 # changed or removed.
1354 if self.op.vg_name is not None and not self.op.vg_name:
1355 instances = self.cfg.GetAllInstancesInfo().values()
1356 for inst in instances:
1357 for disk in inst.disks:
1358 if _RecursiveCheckIfLVMBased(disk):
1359 raise errors.OpPrereqError("Cannot disable lvm storage while"
1360 " lvm-based instances exist")
1362 node_list = self.acquired_locks[locking.LEVEL_NODE]
1364 # if vg_name not None, checks given volume group on all nodes
1366 vglist = self.rpc.call_vg_list(node_list)
1367 for node in node_list:
1368 if vglist[node].failed:
1369 # ignoring down node
1370 self.LogWarning("Node %s unreachable/error, ignoring" % node)
1372 vgstatus = utils.CheckVolumeGroupSize(vglist[node].data,
1374 constants.MIN_VG_SIZE)
1376 raise errors.OpPrereqError("Error on node '%s': %s" %
1379 self.cluster = cluster = self.cfg.GetClusterInfo()
1380 # validate beparams changes
1381 if self.op.beparams:
1382 utils.CheckBEParams(self.op.beparams)
1383 self.new_beparams = cluster.FillDict(
1384 cluster.beparams[constants.BEGR_DEFAULT], self.op.beparams)
1386 # hypervisor list/parameters
1387 self.new_hvparams = cluster.FillDict(cluster.hvparams, {})
1388 if self.op.hvparams:
1389 if not isinstance(self.op.hvparams, dict):
1390 raise errors.OpPrereqError("Invalid 'hvparams' parameter on input")
1391 for hv_name, hv_dict in self.op.hvparams.items():
1392 if hv_name not in self.new_hvparams:
1393 self.new_hvparams[hv_name] = hv_dict
1395 self.new_hvparams[hv_name].update(hv_dict)
1397 if self.op.enabled_hypervisors is not None:
1398 self.hv_list = self.op.enabled_hypervisors
1400 self.hv_list = cluster.enabled_hypervisors
1402 if self.op.hvparams or self.op.enabled_hypervisors is not None:
1403 # either the enabled list has changed, or the parameters have, validate
1404 for hv_name, hv_params in self.new_hvparams.items():
1405 if ((self.op.hvparams and hv_name in self.op.hvparams) or
1406 (self.op.enabled_hypervisors and
1407 hv_name in self.op.enabled_hypervisors)):
1408 # either this is a new hypervisor, or its parameters have changed
1409 hv_class = hypervisor.GetHypervisor(hv_name)
1410 hv_class.CheckParameterSyntax(hv_params)
1411 _CheckHVParams(self, node_list, hv_name, hv_params)
1413 def Exec(self, feedback_fn):
1414 """Change the parameters of the cluster.
1417 if self.op.vg_name is not None:
1418 if self.op.vg_name != self.cfg.GetVGName():
1419 self.cfg.SetVGName(self.op.vg_name)
1421 feedback_fn("Cluster LVM configuration already in desired"
1422 " state, not changing")
1423 if self.op.hvparams:
1424 self.cluster.hvparams = self.new_hvparams
1425 if self.op.enabled_hypervisors is not None:
1426 self.cluster.enabled_hypervisors = self.op.enabled_hypervisors
1427 if self.op.beparams:
1428 self.cluster.beparams[constants.BEGR_DEFAULT] = self.new_beparams
1429 if self.op.candidate_pool_size is not None:
1430 self.cluster.candidate_pool_size = self.op.candidate_pool_size
1432 self.cfg.Update(self.cluster)
1434 # we want to update nodes after the cluster so that if any errors
1435 # happen, we have recorded and saved the cluster info
1436 if self.op.candidate_pool_size is not None:
1437 _AdjustCandidatePool(self)
1440 class LURedistributeConfig(NoHooksLU):
1441 """Force the redistribution of cluster configuration.
1443 This is a very simple LU.
1449 def ExpandNames(self):
1450 self.needed_locks = {
1451 locking.LEVEL_NODE: locking.ALL_SET,
1453 self.share_locks[locking.LEVEL_NODE] = 1
1455 def CheckPrereq(self):
1456 """Check prerequisites.
1460 def Exec(self, feedback_fn):
1461 """Redistribute the configuration.
1464 self.cfg.Update(self.cfg.GetClusterInfo())
1467 def _WaitForSync(lu, instance, oneshot=False, unlock=False):
1468 """Sleep and poll for an instance's disk to sync.
1471 if not instance.disks:
1475 lu.proc.LogInfo("Waiting for instance %s to sync disks." % instance.name)
1477 node = instance.primary_node
1479 for dev in instance.disks:
1480 lu.cfg.SetDiskID(dev, node)
1486 cumul_degraded = False
1487 rstats = lu.rpc.call_blockdev_getmirrorstatus(node, instance.disks)
1488 if rstats.failed or not rstats.data:
1489 lu.LogWarning("Can't get any data from node %s", node)
1492 raise errors.RemoteError("Can't contact node %s for mirror data,"
1493 " aborting." % node)
1496 rstats = rstats.data
1498 for i in range(len(rstats)):
1501 lu.LogWarning("Can't compute data for node %s/%s",
1502 node, instance.disks[i].iv_name)
1504 # we ignore the ldisk parameter
1505 perc_done, est_time, is_degraded, _ = mstat
1506 cumul_degraded = cumul_degraded or (is_degraded and perc_done is None)
1507 if perc_done is not None:
1509 if est_time is not None:
1510 rem_time = "%d estimated seconds remaining" % est_time
1513 rem_time = "no time estimate"
1514 lu.proc.LogInfo("- device %s: %5.2f%% done, %s" %
1515 (instance.disks[i].iv_name, perc_done, rem_time))
1519 time.sleep(min(60, max_time))
1522 lu.proc.LogInfo("Instance %s's disks are in sync." % instance.name)
1523 return not cumul_degraded
1526 def _CheckDiskConsistency(lu, dev, node, on_primary, ldisk=False):
1527 """Check that mirrors are not degraded.
1529 The ldisk parameter, if True, will change the test from the
1530 is_degraded attribute (which represents overall non-ok status for
1531 the device(s)) to the ldisk (representing the local storage status).
1534 lu.cfg.SetDiskID(dev, node)
1541 if on_primary or dev.AssembleOnSecondary():
1542 rstats = lu.rpc.call_blockdev_find(node, dev)
1543 if rstats.failed or not rstats.data:
1544 logging.warning("Node %s: disk degraded, not found or node down", node)
1547 result = result and (not rstats.data[idx])
1549 for child in dev.children:
1550 result = result and _CheckDiskConsistency(lu, child, node, on_primary)
1555 class LUDiagnoseOS(NoHooksLU):
1556 """Logical unit for OS diagnose/query.
1559 _OP_REQP = ["output_fields", "names"]
1561 _FIELDS_STATIC = utils.FieldSet()
1562 _FIELDS_DYNAMIC = utils.FieldSet("name", "valid", "node_status")
1564 def ExpandNames(self):
1566 raise errors.OpPrereqError("Selective OS query not supported")
1568 _CheckOutputFields(static=self._FIELDS_STATIC,
1569 dynamic=self._FIELDS_DYNAMIC,
1570 selected=self.op.output_fields)
1572 # Lock all nodes, in shared mode
1573 self.needed_locks = {}
1574 self.share_locks[locking.LEVEL_NODE] = 1
1575 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
1577 def CheckPrereq(self):
1578 """Check prerequisites.
1583 def _DiagnoseByOS(node_list, rlist):
1584 """Remaps a per-node return list into an a per-os per-node dictionary
1586 @param node_list: a list with the names of all nodes
1587 @param rlist: a map with node names as keys and OS objects as values
1590 @returns: a dictionary with osnames as keys and as value another map, with
1591 nodes as keys and list of OS objects as values, eg::
1593 {"debian-etch": {"node1": [<object>,...],
1594 "node2": [<object>,]}
1599 for node_name, nr in rlist.iteritems():
1600 if nr.failed or not nr.data:
1602 for os_obj in nr.data:
1603 if os_obj.name not in all_os:
1604 # build a list of nodes for this os containing empty lists
1605 # for each node in node_list
1606 all_os[os_obj.name] = {}
1607 for nname in node_list:
1608 all_os[os_obj.name][nname] = []
1609 all_os[os_obj.name][node_name].append(os_obj)
1612 def Exec(self, feedback_fn):
1613 """Compute the list of OSes.
1616 node_list = self.acquired_locks[locking.LEVEL_NODE]
1617 valid_nodes = [node for node in self.cfg.GetOnlineNodeList()
1618 if node in node_list]
1619 node_data = self.rpc.call_os_diagnose(valid_nodes)
1620 if node_data == False:
1621 raise errors.OpExecError("Can't gather the list of OSes")
1622 pol = self._DiagnoseByOS(valid_nodes, node_data)
1624 for os_name, os_data in pol.iteritems():
1626 for field in self.op.output_fields:
1629 elif field == "valid":
1630 val = utils.all([osl and osl[0] for osl in os_data.values()])
1631 elif field == "node_status":
1633 for node_name, nos_list in os_data.iteritems():
1634 val[node_name] = [(v.status, v.path) for v in nos_list]
1636 raise errors.ParameterError(field)
1643 class LURemoveNode(LogicalUnit):
1644 """Logical unit for removing a node.
1647 HPATH = "node-remove"
1648 HTYPE = constants.HTYPE_NODE
1649 _OP_REQP = ["node_name"]
1651 def BuildHooksEnv(self):
1654 This doesn't run on the target node in the pre phase as a failed
1655 node would then be impossible to remove.
1659 "OP_TARGET": self.op.node_name,
1660 "NODE_NAME": self.op.node_name,
1662 all_nodes = self.cfg.GetNodeList()
1663 all_nodes.remove(self.op.node_name)
1664 return env, all_nodes, all_nodes
1666 def CheckPrereq(self):
1667 """Check prerequisites.
1670 - the node exists in the configuration
1671 - it does not have primary or secondary instances
1672 - it's not the master
1674 Any errors are signalled by raising errors.OpPrereqError.
1677 node = self.cfg.GetNodeInfo(self.cfg.ExpandNodeName(self.op.node_name))
1679 raise errors.OpPrereqError, ("Node '%s' is unknown." % self.op.node_name)
1681 instance_list = self.cfg.GetInstanceList()
1683 masternode = self.cfg.GetMasterNode()
1684 if node.name == masternode:
1685 raise errors.OpPrereqError("Node is the master node,"
1686 " you need to failover first.")
1688 for instance_name in instance_list:
1689 instance = self.cfg.GetInstanceInfo(instance_name)
1690 if node.name == instance.primary_node:
1691 raise errors.OpPrereqError("Instance %s still running on the node,"
1692 " please remove first." % instance_name)
1693 if node.name in instance.secondary_nodes:
1694 raise errors.OpPrereqError("Instance %s has node as a secondary,"
1695 " please remove first." % instance_name)
1696 self.op.node_name = node.name
1699 def Exec(self, feedback_fn):
1700 """Removes the node from the cluster.
1704 logging.info("Stopping the node daemon and removing configs from node %s",
1707 self.context.RemoveNode(node.name)
1709 self.rpc.call_node_leave_cluster(node.name)
1711 # Promote nodes to master candidate as needed
1712 _AdjustCandidatePool(self)
1715 class LUQueryNodes(NoHooksLU):
1716 """Logical unit for querying nodes.
1719 _OP_REQP = ["output_fields", "names"]
1721 _FIELDS_DYNAMIC = utils.FieldSet(
1723 "mtotal", "mnode", "mfree",
1728 _FIELDS_STATIC = utils.FieldSet(
1729 "name", "pinst_cnt", "sinst_cnt",
1730 "pinst_list", "sinst_list",
1731 "pip", "sip", "tags",
1738 def ExpandNames(self):
1739 _CheckOutputFields(static=self._FIELDS_STATIC,
1740 dynamic=self._FIELDS_DYNAMIC,
1741 selected=self.op.output_fields)
1743 self.needed_locks = {}
1744 self.share_locks[locking.LEVEL_NODE] = 1
1747 self.wanted = _GetWantedNodes(self, self.op.names)
1749 self.wanted = locking.ALL_SET
1751 self.do_locking = self._FIELDS_STATIC.NonMatching(self.op.output_fields)
1753 # if we don't request only static fields, we need to lock the nodes
1754 self.needed_locks[locking.LEVEL_NODE] = self.wanted
1757 def CheckPrereq(self):
1758 """Check prerequisites.
1761 # The validation of the node list is done in the _GetWantedNodes,
1762 # if non empty, and if empty, there's no validation to do
1765 def Exec(self, feedback_fn):
1766 """Computes the list of nodes and their attributes.
1769 all_info = self.cfg.GetAllNodesInfo()
1771 nodenames = self.acquired_locks[locking.LEVEL_NODE]
1772 elif self.wanted != locking.ALL_SET:
1773 nodenames = self.wanted
1774 missing = set(nodenames).difference(all_info.keys())
1776 raise errors.OpExecError(
1777 "Some nodes were removed before retrieving their data: %s" % missing)
1779 nodenames = all_info.keys()
1781 nodenames = utils.NiceSort(nodenames)
1782 nodelist = [all_info[name] for name in nodenames]
1784 # begin data gathering
1788 node_data = self.rpc.call_node_info(nodenames, self.cfg.GetVGName(),
1789 self.cfg.GetHypervisorType())
1790 for name in nodenames:
1791 nodeinfo = node_data[name]
1792 if not nodeinfo.failed and nodeinfo.data:
1793 nodeinfo = nodeinfo.data
1794 fn = utils.TryConvert
1796 "mtotal": fn(int, nodeinfo.get('memory_total', None)),
1797 "mnode": fn(int, nodeinfo.get('memory_dom0', None)),
1798 "mfree": fn(int, nodeinfo.get('memory_free', None)),
1799 "dtotal": fn(int, nodeinfo.get('vg_size', None)),
1800 "dfree": fn(int, nodeinfo.get('vg_free', None)),
1801 "ctotal": fn(int, nodeinfo.get('cpu_total', None)),
1802 "bootid": nodeinfo.get('bootid', None),
1805 live_data[name] = {}
1807 live_data = dict.fromkeys(nodenames, {})
1809 node_to_primary = dict([(name, set()) for name in nodenames])
1810 node_to_secondary = dict([(name, set()) for name in nodenames])
1812 inst_fields = frozenset(("pinst_cnt", "pinst_list",
1813 "sinst_cnt", "sinst_list"))
1814 if inst_fields & frozenset(self.op.output_fields):
1815 instancelist = self.cfg.GetInstanceList()
1817 for instance_name in instancelist:
1818 inst = self.cfg.GetInstanceInfo(instance_name)
1819 if inst.primary_node in node_to_primary:
1820 node_to_primary[inst.primary_node].add(inst.name)
1821 for secnode in inst.secondary_nodes:
1822 if secnode in node_to_secondary:
1823 node_to_secondary[secnode].add(inst.name)
1825 master_node = self.cfg.GetMasterNode()
1827 # end data gathering
1830 for node in nodelist:
1832 for field in self.op.output_fields:
1835 elif field == "pinst_list":
1836 val = list(node_to_primary[node.name])
1837 elif field == "sinst_list":
1838 val = list(node_to_secondary[node.name])
1839 elif field == "pinst_cnt":
1840 val = len(node_to_primary[node.name])
1841 elif field == "sinst_cnt":
1842 val = len(node_to_secondary[node.name])
1843 elif field == "pip":
1844 val = node.primary_ip
1845 elif field == "sip":
1846 val = node.secondary_ip
1847 elif field == "tags":
1848 val = list(node.GetTags())
1849 elif field == "serial_no":
1850 val = node.serial_no
1851 elif field == "master_candidate":
1852 val = node.master_candidate
1853 elif field == "master":
1854 val = node.name == master_node
1855 elif field == "offline":
1857 elif self._FIELDS_DYNAMIC.Matches(field):
1858 val = live_data[node.name].get(field, None)
1860 raise errors.ParameterError(field)
1861 node_output.append(val)
1862 output.append(node_output)
1867 class LUQueryNodeVolumes(NoHooksLU):
1868 """Logical unit for getting volumes on node(s).
1871 _OP_REQP = ["nodes", "output_fields"]
1873 _FIELDS_DYNAMIC = utils.FieldSet("phys", "vg", "name", "size", "instance")
1874 _FIELDS_STATIC = utils.FieldSet("node")
1876 def ExpandNames(self):
1877 _CheckOutputFields(static=self._FIELDS_STATIC,
1878 dynamic=self._FIELDS_DYNAMIC,
1879 selected=self.op.output_fields)
1881 self.needed_locks = {}
1882 self.share_locks[locking.LEVEL_NODE] = 1
1883 if not self.op.nodes:
1884 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
1886 self.needed_locks[locking.LEVEL_NODE] = \
1887 _GetWantedNodes(self, self.op.nodes)
1889 def CheckPrereq(self):
1890 """Check prerequisites.
1892 This checks that the fields required are valid output fields.
1895 self.nodes = self.acquired_locks[locking.LEVEL_NODE]
1897 def Exec(self, feedback_fn):
1898 """Computes the list of nodes and their attributes.
1901 nodenames = self.nodes
1902 volumes = self.rpc.call_node_volumes(nodenames)
1904 ilist = [self.cfg.GetInstanceInfo(iname) for iname
1905 in self.cfg.GetInstanceList()]
1907 lv_by_node = dict([(inst, inst.MapLVsByNode()) for inst in ilist])
1910 for node in nodenames:
1911 if node not in volumes or volumes[node].failed or not volumes[node].data:
1914 node_vols = volumes[node].data[:]
1915 node_vols.sort(key=lambda vol: vol['dev'])
1917 for vol in node_vols:
1919 for field in self.op.output_fields:
1922 elif field == "phys":
1926 elif field == "name":
1928 elif field == "size":
1929 val = int(float(vol['size']))
1930 elif field == "instance":
1932 if node not in lv_by_node[inst]:
1934 if vol['name'] in lv_by_node[inst][node]:
1940 raise errors.ParameterError(field)
1941 node_output.append(str(val))
1943 output.append(node_output)
1948 class LUAddNode(LogicalUnit):
1949 """Logical unit for adding node to the cluster.
1953 HTYPE = constants.HTYPE_NODE
1954 _OP_REQP = ["node_name"]
1956 def BuildHooksEnv(self):
1959 This will run on all nodes before, and on all nodes + the new node after.
1963 "OP_TARGET": self.op.node_name,
1964 "NODE_NAME": self.op.node_name,
1965 "NODE_PIP": self.op.primary_ip,
1966 "NODE_SIP": self.op.secondary_ip,
1968 nodes_0 = self.cfg.GetNodeList()
1969 nodes_1 = nodes_0 + [self.op.node_name, ]
1970 return env, nodes_0, nodes_1
1972 def CheckPrereq(self):
1973 """Check prerequisites.
1976 - the new node is not already in the config
1978 - its parameters (single/dual homed) matches the cluster
1980 Any errors are signalled by raising errors.OpPrereqError.
1983 node_name = self.op.node_name
1986 dns_data = utils.HostInfo(node_name)
1988 node = dns_data.name
1989 primary_ip = self.op.primary_ip = dns_data.ip
1990 secondary_ip = getattr(self.op, "secondary_ip", None)
1991 if secondary_ip is None:
1992 secondary_ip = primary_ip
1993 if not utils.IsValidIP(secondary_ip):
1994 raise errors.OpPrereqError("Invalid secondary IP given")
1995 self.op.secondary_ip = secondary_ip
1997 node_list = cfg.GetNodeList()
1998 if not self.op.readd and node in node_list:
1999 raise errors.OpPrereqError("Node %s is already in the configuration" %
2001 elif self.op.readd and node not in node_list:
2002 raise errors.OpPrereqError("Node %s is not in the configuration" % node)
2004 for existing_node_name in node_list:
2005 existing_node = cfg.GetNodeInfo(existing_node_name)
2007 if self.op.readd and node == existing_node_name:
2008 if (existing_node.primary_ip != primary_ip or
2009 existing_node.secondary_ip != secondary_ip):
2010 raise errors.OpPrereqError("Readded node doesn't have the same IP"
2011 " address configuration as before")
2014 if (existing_node.primary_ip == primary_ip or
2015 existing_node.secondary_ip == primary_ip or
2016 existing_node.primary_ip == secondary_ip or
2017 existing_node.secondary_ip == secondary_ip):
2018 raise errors.OpPrereqError("New node ip address(es) conflict with"
2019 " existing node %s" % existing_node.name)
2021 # check that the type of the node (single versus dual homed) is the
2022 # same as for the master
2023 myself = cfg.GetNodeInfo(self.cfg.GetMasterNode())
2024 master_singlehomed = myself.secondary_ip == myself.primary_ip
2025 newbie_singlehomed = secondary_ip == primary_ip
2026 if master_singlehomed != newbie_singlehomed:
2027 if master_singlehomed:
2028 raise errors.OpPrereqError("The master has no private ip but the"
2029 " new node has one")
2031 raise errors.OpPrereqError("The master has a private ip but the"
2032 " new node doesn't have one")
2034 # checks reachablity
2035 if not utils.TcpPing(primary_ip, constants.DEFAULT_NODED_PORT):
2036 raise errors.OpPrereqError("Node not reachable by ping")
2038 if not newbie_singlehomed:
2039 # check reachability from my secondary ip to newbie's secondary ip
2040 if not utils.TcpPing(secondary_ip, constants.DEFAULT_NODED_PORT,
2041 source=myself.secondary_ip):
2042 raise errors.OpPrereqError("Node secondary ip not reachable by TCP"
2043 " based ping to noded port")
2045 cp_size = self.cfg.GetClusterInfo().candidate_pool_size
2046 mc_now, _ = self.cfg.GetMasterCandidateStats()
2047 master_candidate = mc_now < cp_size
2049 self.new_node = objects.Node(name=node,
2050 primary_ip=primary_ip,
2051 secondary_ip=secondary_ip,
2052 master_candidate=master_candidate,
2055 def Exec(self, feedback_fn):
2056 """Adds the new node to the cluster.
2059 new_node = self.new_node
2060 node = new_node.name
2062 # check connectivity
2063 result = self.rpc.call_version([node])[node]
2066 if constants.PROTOCOL_VERSION == result.data:
2067 logging.info("Communication to node %s fine, sw version %s match",
2070 raise errors.OpExecError("Version mismatch master version %s,"
2071 " node version %s" %
2072 (constants.PROTOCOL_VERSION, result.data))
2074 raise errors.OpExecError("Cannot get version from the new node")
2077 logging.info("Copy ssh key to node %s", node)
2078 priv_key, pub_key, _ = ssh.GetUserFiles(constants.GANETI_RUNAS)
2080 keyfiles = [constants.SSH_HOST_DSA_PRIV, constants.SSH_HOST_DSA_PUB,
2081 constants.SSH_HOST_RSA_PRIV, constants.SSH_HOST_RSA_PUB,
2087 keyarray.append(f.read())
2091 result = self.rpc.call_node_add(node, keyarray[0], keyarray[1],
2093 keyarray[3], keyarray[4], keyarray[5])
2095 if result.failed or not result.data:
2096 raise errors.OpExecError("Cannot transfer ssh keys to the new node")
2098 # Add node to our /etc/hosts, and add key to known_hosts
2099 utils.AddHostToEtcHosts(new_node.name)
2101 if new_node.secondary_ip != new_node.primary_ip:
2102 result = self.rpc.call_node_has_ip_address(new_node.name,
2103 new_node.secondary_ip)
2104 if result.failed or not result.data:
2105 raise errors.OpExecError("Node claims it doesn't have the secondary ip"
2106 " you gave (%s). Please fix and re-run this"
2107 " command." % new_node.secondary_ip)
2109 node_verify_list = [self.cfg.GetMasterNode()]
2110 node_verify_param = {
2112 # TODO: do a node-net-test as well?
2115 result = self.rpc.call_node_verify(node_verify_list, node_verify_param,
2116 self.cfg.GetClusterName())
2117 for verifier in node_verify_list:
2118 if result[verifier].failed or not result[verifier].data:
2119 raise errors.OpExecError("Cannot communicate with %s's node daemon"
2120 " for remote verification" % verifier)
2121 if result[verifier].data['nodelist']:
2122 for failed in result[verifier].data['nodelist']:
2123 feedback_fn("ssh/hostname verification failed %s -> %s" %
2124 (verifier, result[verifier]['nodelist'][failed]))
2125 raise errors.OpExecError("ssh/hostname verification failed.")
2127 # Distribute updated /etc/hosts and known_hosts to all nodes,
2128 # including the node just added
2129 myself = self.cfg.GetNodeInfo(self.cfg.GetMasterNode())
2130 dist_nodes = self.cfg.GetNodeList()
2131 if not self.op.readd:
2132 dist_nodes.append(node)
2133 if myself.name in dist_nodes:
2134 dist_nodes.remove(myself.name)
2136 logging.debug("Copying hosts and known_hosts to all nodes")
2137 for fname in (constants.ETC_HOSTS, constants.SSH_KNOWN_HOSTS_FILE):
2138 result = self.rpc.call_upload_file(dist_nodes, fname)
2139 for to_node, to_result in result.iteritems():
2140 if to_result.failed or not to_result.data:
2141 logging.error("Copy of file %s to node %s failed", fname, to_node)
2144 if constants.HT_XEN_HVM in self.cfg.GetClusterInfo().enabled_hypervisors:
2145 to_copy.append(constants.VNC_PASSWORD_FILE)
2146 for fname in to_copy:
2147 result = self.rpc.call_upload_file([node], fname)
2148 if result[node].failed or not result[node]:
2149 logging.error("Could not copy file %s to node %s", fname, node)
2152 self.context.ReaddNode(new_node)
2154 self.context.AddNode(new_node)
2157 class LUSetNodeParams(LogicalUnit):
2158 """Modifies the parameters of a node.
2161 HPATH = "node-modify"
2162 HTYPE = constants.HTYPE_NODE
2163 _OP_REQP = ["node_name"]
2166 def CheckArguments(self):
2167 node_name = self.cfg.ExpandNodeName(self.op.node_name)
2168 if node_name is None:
2169 raise errors.OpPrereqError("Invalid node name '%s'" % self.op.node_name)
2170 self.op.node_name = node_name
2171 _CheckBooleanOpField(self.op, 'master_candidate')
2172 _CheckBooleanOpField(self.op, 'offline')
2173 if self.op.master_candidate is None and self.op.offline is None:
2174 raise errors.OpPrereqError("Please pass at least one modification")
2175 if self.op.offline == True and self.op.master_candidate == True:
2176 raise errors.OpPrereqError("Can't set the node into offline and"
2177 " master_candidate at the same time")
2179 def ExpandNames(self):
2180 self.needed_locks = {locking.LEVEL_NODE: self.op.node_name}
2182 def BuildHooksEnv(self):
2185 This runs on the master node.
2189 "OP_TARGET": self.op.node_name,
2190 "MASTER_CANDIDATE": str(self.op.master_candidate),
2191 "OFFLINE": str(self.op.offline),
2193 nl = [self.cfg.GetMasterNode(),
2197 def CheckPrereq(self):
2198 """Check prerequisites.
2200 This only checks the instance list against the existing names.
2203 node = self.node = self.cfg.GetNodeInfo(self.op.node_name)
2205 if ((self.op.master_candidate == False or self.op.offline == True)
2206 and node.master_candidate):
2207 # we will demote the node from master_candidate
2208 if self.op.node_name == self.cfg.GetMasterNode():
2209 raise errors.OpPrereqError("The master node has to be a"
2210 " master candidate and online")
2211 cp_size = self.cfg.GetClusterInfo().candidate_pool_size
2212 num_candidates, _ = self.cfg.GetMasterCandidateStats()
2213 if num_candidates <= cp_size:
2214 msg = ("Not enough master candidates (desired"
2215 " %d, new value will be %d)" % (cp_size, num_candidates-1))
2217 self.LogWarning(msg)
2219 raise errors.OpPrereqError(msg)
2221 if (self.op.master_candidate == True and node.offline and
2222 not self.op.offline == False):
2223 raise errors.OpPrereqError("Can't set an offline node to"
2224 " master_candidate")
2228 def Exec(self, feedback_fn):
2236 if self.op.offline is not None:
2237 node.offline = self.op.offline
2238 result.append(("offline", str(self.op.offline)))
2239 if self.op.offline == True and node.master_candidate:
2240 node.master_candidate = False
2241 result.append(("master_candidate", "auto-demotion due to offline"))
2243 if self.op.master_candidate is not None:
2244 node.master_candidate = self.op.master_candidate
2245 result.append(("master_candidate", str(self.op.master_candidate)))
2246 if self.op.master_candidate == False:
2247 rrc = self.rpc.call_node_demote_from_mc(node.name)
2248 if (rrc.failed or not isinstance(rrc.data, (tuple, list))
2249 or len(rrc.data) != 2):
2250 self.LogWarning("Node rpc error: %s" % rrc.error)
2251 elif not rrc.data[0]:
2252 self.LogWarning("Node failed to demote itself: %s" % rrc.data[1])
2254 # this will trigger configuration file update, if needed
2255 self.cfg.Update(node)
2256 # this will trigger job queue propagation or cleanup
2257 if self.op.node_name != self.cfg.GetMasterNode():
2258 self.context.ReaddNode(node)
2263 class LUQueryClusterInfo(NoHooksLU):
2264 """Query cluster configuration.
2270 def ExpandNames(self):
2271 self.needed_locks = {}
2273 def CheckPrereq(self):
2274 """No prerequsites needed for this LU.
2279 def Exec(self, feedback_fn):
2280 """Return cluster config.
2283 cluster = self.cfg.GetClusterInfo()
2285 "software_version": constants.RELEASE_VERSION,
2286 "protocol_version": constants.PROTOCOL_VERSION,
2287 "config_version": constants.CONFIG_VERSION,
2288 "os_api_version": constants.OS_API_VERSION,
2289 "export_version": constants.EXPORT_VERSION,
2290 "architecture": (platform.architecture()[0], platform.machine()),
2291 "name": cluster.cluster_name,
2292 "master": cluster.master_node,
2293 "default_hypervisor": cluster.default_hypervisor,
2294 "enabled_hypervisors": cluster.enabled_hypervisors,
2295 "hvparams": cluster.hvparams,
2296 "beparams": cluster.beparams,
2297 "candidate_pool_size": cluster.candidate_pool_size,
2303 class LUQueryConfigValues(NoHooksLU):
2304 """Return configuration values.
2309 _FIELDS_DYNAMIC = utils.FieldSet()
2310 _FIELDS_STATIC = utils.FieldSet("cluster_name", "master_node", "drain_flag")
2312 def ExpandNames(self):
2313 self.needed_locks = {}
2315 _CheckOutputFields(static=self._FIELDS_STATIC,
2316 dynamic=self._FIELDS_DYNAMIC,
2317 selected=self.op.output_fields)
2319 def CheckPrereq(self):
2320 """No prerequisites.
2325 def Exec(self, feedback_fn):
2326 """Dump a representation of the cluster config to the standard output.
2330 for field in self.op.output_fields:
2331 if field == "cluster_name":
2332 entry = self.cfg.GetClusterName()
2333 elif field == "master_node":
2334 entry = self.cfg.GetMasterNode()
2335 elif field == "drain_flag":
2336 entry = os.path.exists(constants.JOB_QUEUE_DRAIN_FILE)
2338 raise errors.ParameterError(field)
2339 values.append(entry)
2343 class LUActivateInstanceDisks(NoHooksLU):
2344 """Bring up an instance's disks.
2347 _OP_REQP = ["instance_name"]
2350 def ExpandNames(self):
2351 self._ExpandAndLockInstance()
2352 self.needed_locks[locking.LEVEL_NODE] = []
2353 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
2355 def DeclareLocks(self, level):
2356 if level == locking.LEVEL_NODE:
2357 self._LockInstancesNodes()
2359 def CheckPrereq(self):
2360 """Check prerequisites.
2362 This checks that the instance is in the cluster.
2365 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2366 assert self.instance is not None, \
2367 "Cannot retrieve locked instance %s" % self.op.instance_name
2368 _CheckNodeOnline(self, self.instance.primary_node)
2370 def Exec(self, feedback_fn):
2371 """Activate the disks.
2374 disks_ok, disks_info = _AssembleInstanceDisks(self, self.instance)
2376 raise errors.OpExecError("Cannot activate block devices")
2381 def _AssembleInstanceDisks(lu, instance, ignore_secondaries=False):
2382 """Prepare the block devices for an instance.
2384 This sets up the block devices on all nodes.
2386 @type lu: L{LogicalUnit}
2387 @param lu: the logical unit on whose behalf we execute
2388 @type instance: L{objects.Instance}
2389 @param instance: the instance for whose disks we assemble
2390 @type ignore_secondaries: boolean
2391 @param ignore_secondaries: if true, errors on secondary nodes
2392 won't result in an error return from the function
2393 @return: False if the operation failed, otherwise a list of
2394 (host, instance_visible_name, node_visible_name)
2395 with the mapping from node devices to instance devices
2400 iname = instance.name
2401 # With the two passes mechanism we try to reduce the window of
2402 # opportunity for the race condition of switching DRBD to primary
2403 # before handshaking occured, but we do not eliminate it
2405 # The proper fix would be to wait (with some limits) until the
2406 # connection has been made and drbd transitions from WFConnection
2407 # into any other network-connected state (Connected, SyncTarget,
2410 # 1st pass, assemble on all nodes in secondary mode
2411 for inst_disk in instance.disks:
2412 for node, node_disk in inst_disk.ComputeNodeTree(instance.primary_node):
2413 lu.cfg.SetDiskID(node_disk, node)
2414 result = lu.rpc.call_blockdev_assemble(node, node_disk, iname, False)
2415 if result.failed or not result:
2416 lu.proc.LogWarning("Could not prepare block device %s on node %s"
2417 " (is_primary=False, pass=1)",
2418 inst_disk.iv_name, node)
2419 if not ignore_secondaries:
2422 # FIXME: race condition on drbd migration to primary
2424 # 2nd pass, do only the primary node
2425 for inst_disk in instance.disks:
2426 for node, node_disk in inst_disk.ComputeNodeTree(instance.primary_node):
2427 if node != instance.primary_node:
2429 lu.cfg.SetDiskID(node_disk, node)
2430 result = lu.rpc.call_blockdev_assemble(node, node_disk, iname, True)
2431 if result.failed or not result:
2432 lu.proc.LogWarning("Could not prepare block device %s on node %s"
2433 " (is_primary=True, pass=2)",
2434 inst_disk.iv_name, node)
2436 device_info.append((instance.primary_node, inst_disk.iv_name, result.data))
2438 # leave the disks configured for the primary node
2439 # this is a workaround that would be fixed better by
2440 # improving the logical/physical id handling
2441 for disk in instance.disks:
2442 lu.cfg.SetDiskID(disk, instance.primary_node)
2444 return disks_ok, device_info
2447 def _StartInstanceDisks(lu, instance, force):
2448 """Start the disks of an instance.
2451 disks_ok, dummy = _AssembleInstanceDisks(lu, instance,
2452 ignore_secondaries=force)
2454 _ShutdownInstanceDisks(lu, instance)
2455 if force is not None and not force:
2456 lu.proc.LogWarning("", hint="If the message above refers to a"
2458 " you can retry the operation using '--force'.")
2459 raise errors.OpExecError("Disk consistency error")
2462 class LUDeactivateInstanceDisks(NoHooksLU):
2463 """Shutdown an instance's disks.
2466 _OP_REQP = ["instance_name"]
2469 def ExpandNames(self):
2470 self._ExpandAndLockInstance()
2471 self.needed_locks[locking.LEVEL_NODE] = []
2472 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
2474 def DeclareLocks(self, level):
2475 if level == locking.LEVEL_NODE:
2476 self._LockInstancesNodes()
2478 def CheckPrereq(self):
2479 """Check prerequisites.
2481 This checks that the instance is in the cluster.
2484 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2485 assert self.instance is not None, \
2486 "Cannot retrieve locked instance %s" % self.op.instance_name
2488 def Exec(self, feedback_fn):
2489 """Deactivate the disks
2492 instance = self.instance
2493 _SafeShutdownInstanceDisks(self, instance)
2496 def _SafeShutdownInstanceDisks(lu, instance):
2497 """Shutdown block devices of an instance.
2499 This function checks if an instance is running, before calling
2500 _ShutdownInstanceDisks.
2503 ins_l = lu.rpc.call_instance_list([instance.primary_node],
2504 [instance.hypervisor])
2505 ins_l = ins_l[instance.primary_node]
2506 if ins_l.failed or not isinstance(ins_l.data, list):
2507 raise errors.OpExecError("Can't contact node '%s'" %
2508 instance.primary_node)
2510 if instance.name in ins_l.data:
2511 raise errors.OpExecError("Instance is running, can't shutdown"
2514 _ShutdownInstanceDisks(lu, instance)
2517 def _ShutdownInstanceDisks(lu, instance, ignore_primary=False):
2518 """Shutdown block devices of an instance.
2520 This does the shutdown on all nodes of the instance.
2522 If the ignore_primary is false, errors on the primary node are
2527 for disk in instance.disks:
2528 for node, top_disk in disk.ComputeNodeTree(instance.primary_node):
2529 lu.cfg.SetDiskID(top_disk, node)
2530 result = lu.rpc.call_blockdev_shutdown(node, top_disk)
2531 if result.failed or not result.data:
2532 logging.error("Could not shutdown block device %s on node %s",
2534 if not ignore_primary or node != instance.primary_node:
2539 def _CheckNodeFreeMemory(lu, node, reason, requested, hypervisor_name):
2540 """Checks if a node has enough free memory.
2542 This function check if a given node has the needed amount of free
2543 memory. In case the node has less memory or we cannot get the
2544 information from the node, this function raise an OpPrereqError
2547 @type lu: C{LogicalUnit}
2548 @param lu: a logical unit from which we get configuration data
2550 @param node: the node to check
2551 @type reason: C{str}
2552 @param reason: string to use in the error message
2553 @type requested: C{int}
2554 @param requested: the amount of memory in MiB to check for
2555 @type hypervisor_name: C{str}
2556 @param hypervisor_name: the hypervisor to ask for memory stats
2557 @raise errors.OpPrereqError: if the node doesn't have enough memory, or
2558 we cannot check the node
2561 nodeinfo = lu.rpc.call_node_info([node], lu.cfg.GetVGName(), hypervisor_name)
2562 nodeinfo[node].Raise()
2563 free_mem = nodeinfo[node].data.get('memory_free')
2564 if not isinstance(free_mem, int):
2565 raise errors.OpPrereqError("Can't compute free memory on node %s, result"
2566 " was '%s'" % (node, free_mem))
2567 if requested > free_mem:
2568 raise errors.OpPrereqError("Not enough memory on node %s for %s:"
2569 " needed %s MiB, available %s MiB" %
2570 (node, reason, requested, free_mem))
2573 class LUStartupInstance(LogicalUnit):
2574 """Starts an instance.
2577 HPATH = "instance-start"
2578 HTYPE = constants.HTYPE_INSTANCE
2579 _OP_REQP = ["instance_name", "force"]
2582 def ExpandNames(self):
2583 self._ExpandAndLockInstance()
2585 def BuildHooksEnv(self):
2588 This runs on master, primary and secondary nodes of the instance.
2592 "FORCE": self.op.force,
2594 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
2595 nl = ([self.cfg.GetMasterNode(), self.instance.primary_node] +
2596 list(self.instance.secondary_nodes))
2599 def CheckPrereq(self):
2600 """Check prerequisites.
2602 This checks that the instance is in the cluster.
2605 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2606 assert self.instance is not None, \
2607 "Cannot retrieve locked instance %s" % self.op.instance_name
2609 _CheckNodeOnline(self, instance.primary_node)
2611 bep = self.cfg.GetClusterInfo().FillBE(instance)
2612 # check bridges existance
2613 _CheckInstanceBridgesExist(self, instance)
2615 _CheckNodeFreeMemory(self, instance.primary_node,
2616 "starting instance %s" % instance.name,
2617 bep[constants.BE_MEMORY], instance.hypervisor)
2619 def Exec(self, feedback_fn):
2620 """Start the instance.
2623 instance = self.instance
2624 force = self.op.force
2625 extra_args = getattr(self.op, "extra_args", "")
2627 self.cfg.MarkInstanceUp(instance.name)
2629 node_current = instance.primary_node
2631 _StartInstanceDisks(self, instance, force)
2633 result = self.rpc.call_instance_start(node_current, instance, extra_args)
2634 if result.failed or not result.data:
2635 _ShutdownInstanceDisks(self, instance)
2636 raise errors.OpExecError("Could not start instance")
2639 class LURebootInstance(LogicalUnit):
2640 """Reboot an instance.
2643 HPATH = "instance-reboot"
2644 HTYPE = constants.HTYPE_INSTANCE
2645 _OP_REQP = ["instance_name", "ignore_secondaries", "reboot_type"]
2648 def ExpandNames(self):
2649 if self.op.reboot_type not in [constants.INSTANCE_REBOOT_SOFT,
2650 constants.INSTANCE_REBOOT_HARD,
2651 constants.INSTANCE_REBOOT_FULL]:
2652 raise errors.ParameterError("reboot type not in [%s, %s, %s]" %
2653 (constants.INSTANCE_REBOOT_SOFT,
2654 constants.INSTANCE_REBOOT_HARD,
2655 constants.INSTANCE_REBOOT_FULL))
2656 self._ExpandAndLockInstance()
2658 def BuildHooksEnv(self):
2661 This runs on master, primary and secondary nodes of the instance.
2665 "IGNORE_SECONDARIES": self.op.ignore_secondaries,
2667 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
2668 nl = ([self.cfg.GetMasterNode(), self.instance.primary_node] +
2669 list(self.instance.secondary_nodes))
2672 def CheckPrereq(self):
2673 """Check prerequisites.
2675 This checks that the instance is in the cluster.
2678 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2679 assert self.instance is not None, \
2680 "Cannot retrieve locked instance %s" % self.op.instance_name
2682 _CheckNodeOnline(self, instance.primary_node)
2684 # check bridges existance
2685 _CheckInstanceBridgesExist(self, instance)
2687 def Exec(self, feedback_fn):
2688 """Reboot the instance.
2691 instance = self.instance
2692 ignore_secondaries = self.op.ignore_secondaries
2693 reboot_type = self.op.reboot_type
2694 extra_args = getattr(self.op, "extra_args", "")
2696 node_current = instance.primary_node
2698 if reboot_type in [constants.INSTANCE_REBOOT_SOFT,
2699 constants.INSTANCE_REBOOT_HARD]:
2700 result = self.rpc.call_instance_reboot(node_current, instance,
2701 reboot_type, extra_args)
2702 if result.failed or not result.data:
2703 raise errors.OpExecError("Could not reboot instance")
2705 if not self.rpc.call_instance_shutdown(node_current, instance):
2706 raise errors.OpExecError("could not shutdown instance for full reboot")
2707 _ShutdownInstanceDisks(self, instance)
2708 _StartInstanceDisks(self, instance, ignore_secondaries)
2709 result = self.rpc.call_instance_start(node_current, instance, extra_args)
2710 if result.failed or not result.data:
2711 _ShutdownInstanceDisks(self, instance)
2712 raise errors.OpExecError("Could not start instance for full reboot")
2714 self.cfg.MarkInstanceUp(instance.name)
2717 class LUShutdownInstance(LogicalUnit):
2718 """Shutdown an instance.
2721 HPATH = "instance-stop"
2722 HTYPE = constants.HTYPE_INSTANCE
2723 _OP_REQP = ["instance_name"]
2726 def ExpandNames(self):
2727 self._ExpandAndLockInstance()
2729 def BuildHooksEnv(self):
2732 This runs on master, primary and secondary nodes of the instance.
2735 env = _BuildInstanceHookEnvByObject(self, self.instance)
2736 nl = ([self.cfg.GetMasterNode(), self.instance.primary_node] +
2737 list(self.instance.secondary_nodes))
2740 def CheckPrereq(self):
2741 """Check prerequisites.
2743 This checks that the instance is in the cluster.
2746 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2747 assert self.instance is not None, \
2748 "Cannot retrieve locked instance %s" % self.op.instance_name
2749 _CheckNodeOnline(self, self.instance.primary_node)
2751 def Exec(self, feedback_fn):
2752 """Shutdown the instance.
2755 instance = self.instance
2756 node_current = instance.primary_node
2757 self.cfg.MarkInstanceDown(instance.name)
2758 result = self.rpc.call_instance_shutdown(node_current, instance)
2759 if result.failed or not result.data:
2760 self.proc.LogWarning("Could not shutdown instance")
2762 _ShutdownInstanceDisks(self, instance)
2765 class LUReinstallInstance(LogicalUnit):
2766 """Reinstall an instance.
2769 HPATH = "instance-reinstall"
2770 HTYPE = constants.HTYPE_INSTANCE
2771 _OP_REQP = ["instance_name"]
2774 def ExpandNames(self):
2775 self._ExpandAndLockInstance()
2777 def BuildHooksEnv(self):
2780 This runs on master, primary and secondary nodes of the instance.
2783 env = _BuildInstanceHookEnvByObject(self, self.instance)
2784 nl = ([self.cfg.GetMasterNode(), self.instance.primary_node] +
2785 list(self.instance.secondary_nodes))
2788 def CheckPrereq(self):
2789 """Check prerequisites.
2791 This checks that the instance is in the cluster and is not running.
2794 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2795 assert instance is not None, \
2796 "Cannot retrieve locked instance %s" % self.op.instance_name
2797 _CheckNodeOnline(self, instance.primary_node)
2799 if instance.disk_template == constants.DT_DISKLESS:
2800 raise errors.OpPrereqError("Instance '%s' has no disks" %
2801 self.op.instance_name)
2802 if instance.status != "down":
2803 raise errors.OpPrereqError("Instance '%s' is marked to be up" %
2804 self.op.instance_name)
2805 remote_info = self.rpc.call_instance_info(instance.primary_node,
2807 instance.hypervisor)
2808 if remote_info.failed or remote_info.data:
2809 raise errors.OpPrereqError("Instance '%s' is running on the node %s" %
2810 (self.op.instance_name,
2811 instance.primary_node))
2813 self.op.os_type = getattr(self.op, "os_type", None)
2814 if self.op.os_type is not None:
2816 pnode = self.cfg.GetNodeInfo(
2817 self.cfg.ExpandNodeName(instance.primary_node))
2819 raise errors.OpPrereqError("Primary node '%s' is unknown" %
2821 result = self.rpc.call_os_get(pnode.name, self.op.os_type)
2823 if not isinstance(result.data, objects.OS):
2824 raise errors.OpPrereqError("OS '%s' not in supported OS list for"
2825 " primary node" % self.op.os_type)
2827 self.instance = instance
2829 def Exec(self, feedback_fn):
2830 """Reinstall the instance.
2833 inst = self.instance
2835 if self.op.os_type is not None:
2836 feedback_fn("Changing OS to '%s'..." % self.op.os_type)
2837 inst.os = self.op.os_type
2838 self.cfg.Update(inst)
2840 _StartInstanceDisks(self, inst, None)
2842 feedback_fn("Running the instance OS create scripts...")
2843 result = self.rpc.call_instance_os_add(inst.primary_node, inst)
2846 raise errors.OpExecError("Could not install OS for instance %s"
2848 (inst.name, inst.primary_node))
2850 _ShutdownInstanceDisks(self, inst)
2853 class LURenameInstance(LogicalUnit):
2854 """Rename an instance.
2857 HPATH = "instance-rename"
2858 HTYPE = constants.HTYPE_INSTANCE
2859 _OP_REQP = ["instance_name", "new_name"]
2861 def BuildHooksEnv(self):
2864 This runs on master, primary and secondary nodes of the instance.
2867 env = _BuildInstanceHookEnvByObject(self, self.instance)
2868 env["INSTANCE_NEW_NAME"] = self.op.new_name
2869 nl = ([self.cfg.GetMasterNode(), self.instance.primary_node] +
2870 list(self.instance.secondary_nodes))
2873 def CheckPrereq(self):
2874 """Check prerequisites.
2876 This checks that the instance is in the cluster and is not running.
2879 instance = self.cfg.GetInstanceInfo(
2880 self.cfg.ExpandInstanceName(self.op.instance_name))
2881 if instance is None:
2882 raise errors.OpPrereqError("Instance '%s' not known" %
2883 self.op.instance_name)
2884 _CheckNodeOnline(self, instance.primary_node)
2886 if instance.status != "down":
2887 raise errors.OpPrereqError("Instance '%s' is marked to be up" %
2888 self.op.instance_name)
2889 remote_info = self.rpc.call_instance_info(instance.primary_node,
2891 instance.hypervisor)
2893 if remote_info.data:
2894 raise errors.OpPrereqError("Instance '%s' is running on the node %s" %
2895 (self.op.instance_name,
2896 instance.primary_node))
2897 self.instance = instance
2899 # new name verification
2900 name_info = utils.HostInfo(self.op.new_name)
2902 self.op.new_name = new_name = name_info.name
2903 instance_list = self.cfg.GetInstanceList()
2904 if new_name in instance_list:
2905 raise errors.OpPrereqError("Instance '%s' is already in the cluster" %
2908 if not getattr(self.op, "ignore_ip", False):
2909 if utils.TcpPing(name_info.ip, constants.DEFAULT_NODED_PORT):
2910 raise errors.OpPrereqError("IP %s of instance %s already in use" %
2911 (name_info.ip, new_name))
2914 def Exec(self, feedback_fn):
2915 """Reinstall the instance.
2918 inst = self.instance
2919 old_name = inst.name
2921 if inst.disk_template == constants.DT_FILE:
2922 old_file_storage_dir = os.path.dirname(inst.disks[0].logical_id[1])
2924 self.cfg.RenameInstance(inst.name, self.op.new_name)
2925 # Change the instance lock. This is definitely safe while we hold the BGL
2926 self.context.glm.remove(locking.LEVEL_INSTANCE, old_name)
2927 self.context.glm.add(locking.LEVEL_INSTANCE, self.op.new_name)
2929 # re-read the instance from the configuration after rename
2930 inst = self.cfg.GetInstanceInfo(self.op.new_name)
2932 if inst.disk_template == constants.DT_FILE:
2933 new_file_storage_dir = os.path.dirname(inst.disks[0].logical_id[1])
2934 result = self.rpc.call_file_storage_dir_rename(inst.primary_node,
2935 old_file_storage_dir,
2936 new_file_storage_dir)
2939 raise errors.OpExecError("Could not connect to node '%s' to rename"
2940 " directory '%s' to '%s' (but the instance"
2941 " has been renamed in Ganeti)" % (
2942 inst.primary_node, old_file_storage_dir,
2943 new_file_storage_dir))
2945 if not result.data[0]:
2946 raise errors.OpExecError("Could not rename directory '%s' to '%s'"
2947 " (but the instance has been renamed in"
2948 " Ganeti)" % (old_file_storage_dir,
2949 new_file_storage_dir))
2951 _StartInstanceDisks(self, inst, None)
2953 result = self.rpc.call_instance_run_rename(inst.primary_node, inst,
2955 if result.failed or not result.data:
2956 msg = ("Could not run OS rename script for instance %s on node %s"
2957 " (but the instance has been renamed in Ganeti)" %
2958 (inst.name, inst.primary_node))
2959 self.proc.LogWarning(msg)
2961 _ShutdownInstanceDisks(self, inst)
2964 class LURemoveInstance(LogicalUnit):
2965 """Remove an instance.
2968 HPATH = "instance-remove"
2969 HTYPE = constants.HTYPE_INSTANCE
2970 _OP_REQP = ["instance_name", "ignore_failures"]
2973 def ExpandNames(self):
2974 self._ExpandAndLockInstance()
2975 self.needed_locks[locking.LEVEL_NODE] = []
2976 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
2978 def DeclareLocks(self, level):
2979 if level == locking.LEVEL_NODE:
2980 self._LockInstancesNodes()
2982 def BuildHooksEnv(self):
2985 This runs on master, primary and secondary nodes of the instance.
2988 env = _BuildInstanceHookEnvByObject(self, self.instance)
2989 nl = [self.cfg.GetMasterNode()]
2992 def CheckPrereq(self):
2993 """Check prerequisites.
2995 This checks that the instance is in the cluster.
2998 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2999 assert self.instance is not None, \
3000 "Cannot retrieve locked instance %s" % self.op.instance_name
3002 def Exec(self, feedback_fn):
3003 """Remove the instance.
3006 instance = self.instance
3007 logging.info("Shutting down instance %s on node %s",
3008 instance.name, instance.primary_node)
3010 result = self.rpc.call_instance_shutdown(instance.primary_node, instance)
3011 if result.failed or not result.data:
3012 if self.op.ignore_failures:
3013 feedback_fn("Warning: can't shutdown instance")
3015 raise errors.OpExecError("Could not shutdown instance %s on node %s" %
3016 (instance.name, instance.primary_node))
3018 logging.info("Removing block devices for instance %s", instance.name)
3020 if not _RemoveDisks(self, instance):
3021 if self.op.ignore_failures:
3022 feedback_fn("Warning: can't remove instance's disks")
3024 raise errors.OpExecError("Can't remove instance's disks")
3026 logging.info("Removing instance %s out of cluster config", instance.name)
3028 self.cfg.RemoveInstance(instance.name)
3029 self.remove_locks[locking.LEVEL_INSTANCE] = instance.name
3032 class LUQueryInstances(NoHooksLU):
3033 """Logical unit for querying instances.
3036 _OP_REQP = ["output_fields", "names"]
3038 _FIELDS_STATIC = utils.FieldSet(*["name", "os", "pnode", "snodes",
3039 "admin_state", "admin_ram",
3040 "disk_template", "ip", "mac", "bridge",
3041 "sda_size", "sdb_size", "vcpus", "tags",
3042 "network_port", "beparams",
3043 "(disk).(size)/([0-9]+)",
3045 "(nic).(mac|ip|bridge)/([0-9]+)",
3046 "(nic).(macs|ips|bridges)",
3047 "(disk|nic).(count)",
3048 "serial_no", "hypervisor", "hvparams",] +
3050 for name in constants.HVS_PARAMETERS] +
3052 for name in constants.BES_PARAMETERS])
3053 _FIELDS_DYNAMIC = utils.FieldSet("oper_state", "oper_ram", "status")
3056 def ExpandNames(self):
3057 _CheckOutputFields(static=self._FIELDS_STATIC,
3058 dynamic=self._FIELDS_DYNAMIC,
3059 selected=self.op.output_fields)
3061 self.needed_locks = {}
3062 self.share_locks[locking.LEVEL_INSTANCE] = 1
3063 self.share_locks[locking.LEVEL_NODE] = 1
3066 self.wanted = _GetWantedInstances(self, self.op.names)
3068 self.wanted = locking.ALL_SET
3070 self.do_locking = self._FIELDS_STATIC.NonMatching(self.op.output_fields)
3072 self.needed_locks[locking.LEVEL_INSTANCE] = self.wanted
3073 self.needed_locks[locking.LEVEL_NODE] = []
3074 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3076 def DeclareLocks(self, level):
3077 if level == locking.LEVEL_NODE and self.do_locking:
3078 self._LockInstancesNodes()
3080 def CheckPrereq(self):
3081 """Check prerequisites.
3086 def Exec(self, feedback_fn):
3087 """Computes the list of nodes and their attributes.
3090 all_info = self.cfg.GetAllInstancesInfo()
3092 instance_names = self.acquired_locks[locking.LEVEL_INSTANCE]
3093 elif self.wanted != locking.ALL_SET:
3094 instance_names = self.wanted
3095 missing = set(instance_names).difference(all_info.keys())
3097 raise errors.OpExecError(
3098 "Some instances were removed before retrieving their data: %s"
3101 instance_names = all_info.keys()
3103 instance_names = utils.NiceSort(instance_names)
3104 instance_list = [all_info[iname] for iname in instance_names]
3106 # begin data gathering
3108 nodes = frozenset([inst.primary_node for inst in instance_list])
3109 hv_list = list(set([inst.hypervisor for inst in instance_list]))
3115 node_data = self.rpc.call_all_instances_info(nodes, hv_list)
3117 result = node_data[name]
3119 # offline nodes will be in both lists
3120 off_nodes.append(name)
3122 bad_nodes.append(name)
3125 live_data.update(result.data)
3126 # else no instance is alive
3128 live_data = dict([(name, {}) for name in instance_names])
3130 # end data gathering
3135 for instance in instance_list:
3137 i_hv = self.cfg.GetClusterInfo().FillHV(instance)
3138 i_be = self.cfg.GetClusterInfo().FillBE(instance)
3139 for field in self.op.output_fields:
3140 st_match = self._FIELDS_STATIC.Matches(field)
3145 elif field == "pnode":
3146 val = instance.primary_node
3147 elif field == "snodes":
3148 val = list(instance.secondary_nodes)
3149 elif field == "admin_state":
3150 val = (instance.status != "down")
3151 elif field == "oper_state":
3152 if instance.primary_node in bad_nodes:
3155 val = bool(live_data.get(instance.name))
3156 elif field == "status":
3157 if instance.primary_node in off_nodes:
3158 val = "ERROR_nodeoffline"
3159 elif instance.primary_node in bad_nodes:
3160 val = "ERROR_nodedown"
3162 running = bool(live_data.get(instance.name))
3164 if instance.status != "down":
3169 if instance.status != "down":
3173 elif field == "oper_ram":
3174 if instance.primary_node in bad_nodes:
3176 elif instance.name in live_data:
3177 val = live_data[instance.name].get("memory", "?")
3180 elif field == "disk_template":
3181 val = instance.disk_template
3183 val = instance.nics[0].ip
3184 elif field == "bridge":
3185 val = instance.nics[0].bridge
3186 elif field == "mac":
3187 val = instance.nics[0].mac
3188 elif field == "sda_size" or field == "sdb_size":
3189 idx = ord(field[2]) - ord('a')
3191 val = instance.FindDisk(idx).size
3192 except errors.OpPrereqError:
3194 elif field == "tags":
3195 val = list(instance.GetTags())
3196 elif field == "serial_no":
3197 val = instance.serial_no
3198 elif field == "network_port":
3199 val = instance.network_port
3200 elif field == "hypervisor":
3201 val = instance.hypervisor
3202 elif field == "hvparams":
3204 elif (field.startswith(HVPREFIX) and
3205 field[len(HVPREFIX):] in constants.HVS_PARAMETERS):
3206 val = i_hv.get(field[len(HVPREFIX):], None)
3207 elif field == "beparams":
3209 elif (field.startswith(BEPREFIX) and
3210 field[len(BEPREFIX):] in constants.BES_PARAMETERS):
3211 val = i_be.get(field[len(BEPREFIX):], None)
3212 elif st_match and st_match.groups():
3213 # matches a variable list
3214 st_groups = st_match.groups()
3215 if st_groups and st_groups[0] == "disk":
3216 if st_groups[1] == "count":
3217 val = len(instance.disks)
3218 elif st_groups[1] == "sizes":
3219 val = [disk.size for disk in instance.disks]
3220 elif st_groups[1] == "size":
3222 val = instance.FindDisk(st_groups[2]).size
3223 except errors.OpPrereqError:
3226 assert False, "Unhandled disk parameter"
3227 elif st_groups[0] == "nic":
3228 if st_groups[1] == "count":
3229 val = len(instance.nics)
3230 elif st_groups[1] == "macs":
3231 val = [nic.mac for nic in instance.nics]
3232 elif st_groups[1] == "ips":
3233 val = [nic.ip for nic in instance.nics]
3234 elif st_groups[1] == "bridges":
3235 val = [nic.bridge for nic in instance.nics]
3238 nic_idx = int(st_groups[2])
3239 if nic_idx >= len(instance.nics):
3242 if st_groups[1] == "mac":
3243 val = instance.nics[nic_idx].mac
3244 elif st_groups[1] == "ip":
3245 val = instance.nics[nic_idx].ip
3246 elif st_groups[1] == "bridge":
3247 val = instance.nics[nic_idx].bridge
3249 assert False, "Unhandled NIC parameter"
3251 assert False, "Unhandled variable parameter"
3253 raise errors.ParameterError(field)
3260 class LUFailoverInstance(LogicalUnit):
3261 """Failover an instance.
3264 HPATH = "instance-failover"
3265 HTYPE = constants.HTYPE_INSTANCE
3266 _OP_REQP = ["instance_name", "ignore_consistency"]
3269 def ExpandNames(self):
3270 self._ExpandAndLockInstance()
3271 self.needed_locks[locking.LEVEL_NODE] = []
3272 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3274 def DeclareLocks(self, level):
3275 if level == locking.LEVEL_NODE:
3276 self._LockInstancesNodes()
3278 def BuildHooksEnv(self):
3281 This runs on master, primary and secondary nodes of the instance.
3285 "IGNORE_CONSISTENCY": self.op.ignore_consistency,
3287 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
3288 nl = [self.cfg.GetMasterNode()] + list(self.instance.secondary_nodes)
3291 def CheckPrereq(self):
3292 """Check prerequisites.
3294 This checks that the instance is in the cluster.
3297 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3298 assert self.instance is not None, \
3299 "Cannot retrieve locked instance %s" % self.op.instance_name
3301 bep = self.cfg.GetClusterInfo().FillBE(instance)
3302 if instance.disk_template not in constants.DTS_NET_MIRROR:
3303 raise errors.OpPrereqError("Instance's disk layout is not"
3304 " network mirrored, cannot failover.")
3306 secondary_nodes = instance.secondary_nodes
3307 if not secondary_nodes:
3308 raise errors.ProgrammerError("no secondary node but using "
3309 "a mirrored disk template")
3311 target_node = secondary_nodes[0]
3312 _CheckNodeOnline(self, target_node)
3313 # check memory requirements on the secondary node
3314 _CheckNodeFreeMemory(self, target_node, "failing over instance %s" %
3315 instance.name, bep[constants.BE_MEMORY],
3316 instance.hypervisor)
3318 # check bridge existance
3319 brlist = [nic.bridge for nic in instance.nics]
3320 result = self.rpc.call_bridges_exist(target_node, brlist)
3323 raise errors.OpPrereqError("One or more target bridges %s does not"
3324 " exist on destination node '%s'" %
3325 (brlist, target_node))
3327 def Exec(self, feedback_fn):
3328 """Failover an instance.
3330 The failover is done by shutting it down on its present node and
3331 starting it on the secondary.
3334 instance = self.instance
3336 source_node = instance.primary_node
3337 target_node = instance.secondary_nodes[0]
3339 feedback_fn("* checking disk consistency between source and target")
3340 for dev in instance.disks:
3341 # for drbd, these are drbd over lvm
3342 if not _CheckDiskConsistency(self, dev, target_node, False):
3343 if instance.status == "up" and not self.op.ignore_consistency:
3344 raise errors.OpExecError("Disk %s is degraded on target node,"
3345 " aborting failover." % dev.iv_name)
3347 feedback_fn("* shutting down instance on source node")
3348 logging.info("Shutting down instance %s on node %s",
3349 instance.name, source_node)
3351 result = self.rpc.call_instance_shutdown(source_node, instance)
3352 if result.failed or not result.data:
3353 if self.op.ignore_consistency:
3354 self.proc.LogWarning("Could not shutdown instance %s on node %s."
3356 " anyway. Please make sure node %s is down",
3357 instance.name, source_node, source_node)
3359 raise errors.OpExecError("Could not shutdown instance %s on node %s" %
3360 (instance.name, source_node))
3362 feedback_fn("* deactivating the instance's disks on source node")
3363 if not _ShutdownInstanceDisks(self, instance, ignore_primary=True):
3364 raise errors.OpExecError("Can't shut down the instance's disks.")
3366 instance.primary_node = target_node
3367 # distribute new instance config to the other nodes
3368 self.cfg.Update(instance)
3370 # Only start the instance if it's marked as up
3371 if instance.status == "up":
3372 feedback_fn("* activating the instance's disks on target node")
3373 logging.info("Starting instance %s on node %s",
3374 instance.name, target_node)
3376 disks_ok, dummy = _AssembleInstanceDisks(self, instance,
3377 ignore_secondaries=True)
3379 _ShutdownInstanceDisks(self, instance)
3380 raise errors.OpExecError("Can't activate the instance's disks")
3382 feedback_fn("* starting the instance on the target node")
3383 result = self.rpc.call_instance_start(target_node, instance, None)
3384 if result.failed or not result.data:
3385 _ShutdownInstanceDisks(self, instance)
3386 raise errors.OpExecError("Could not start instance %s on node %s." %
3387 (instance.name, target_node))
3390 class LUMigrateInstance(LogicalUnit):
3391 """Migrate an instance.
3393 This is migration without shutting down, compared to the failover,
3394 which is done with shutdown.
3397 HPATH = "instance-migrate"
3398 HTYPE = constants.HTYPE_INSTANCE
3399 _OP_REQP = ["instance_name", "live", "cleanup"]
3403 def ExpandNames(self):
3404 self._ExpandAndLockInstance()
3405 self.needed_locks[locking.LEVEL_NODE] = []
3406 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3408 def DeclareLocks(self, level):
3409 if level == locking.LEVEL_NODE:
3410 self._LockInstancesNodes()
3412 def BuildHooksEnv(self):
3415 This runs on master, primary and secondary nodes of the instance.
3418 env = _BuildInstanceHookEnvByObject(self, self.instance)
3419 nl = [self.cfg.GetMasterNode()] + list(self.instance.secondary_nodes)
3422 def CheckPrereq(self):
3423 """Check prerequisites.
3425 This checks that the instance is in the cluster.
3428 instance = self.cfg.GetInstanceInfo(
3429 self.cfg.ExpandInstanceName(self.op.instance_name))
3430 if instance is None:
3431 raise errors.OpPrereqError("Instance '%s' not known" %
3432 self.op.instance_name)
3434 if instance.disk_template != constants.DT_DRBD8:
3435 raise errors.OpPrereqError("Instance's disk layout is not"
3436 " drbd8, cannot migrate.")
3438 secondary_nodes = instance.secondary_nodes
3439 if not secondary_nodes:
3440 raise errors.ProgrammerError("no secondary node but using "
3441 "drbd8 disk template")
3443 i_be = self.cfg.GetClusterInfo().FillBE(instance)
3445 target_node = secondary_nodes[0]
3446 # check memory requirements on the secondary node
3447 _CheckNodeFreeMemory(self, target_node, "migrating instance %s" %
3448 instance.name, i_be[constants.BE_MEMORY],
3449 instance.hypervisor)
3451 # check bridge existance
3452 brlist = [nic.bridge for nic in instance.nics]
3453 result = self.rpc.call_bridges_exist(target_node, brlist)
3454 if result.failed or not result.data:
3455 raise errors.OpPrereqError("One or more target bridges %s does not"
3456 " exist on destination node '%s'" %
3457 (brlist, target_node))
3459 if not self.op.cleanup:
3460 result = self.rpc.call_instance_migratable(instance.primary_node,
3462 msg = result.RemoteFailMsg()
3464 raise errors.OpPrereqError("Can't migrate: %s - please use failover" %
3467 self.instance = instance
3469 def _WaitUntilSync(self):
3470 """Poll with custom rpc for disk sync.
3472 This uses our own step-based rpc call.
3475 self.feedback_fn("* wait until resync is done")
3479 result = self.rpc.call_drbd_wait_sync(self.all_nodes,
3481 self.instance.disks)
3483 for node, nres in result.items():
3484 msg = nres.RemoteFailMsg()
3486 raise errors.OpExecError("Cannot resync disks on node %s: %s" %
3488 node_done, node_percent = nres.data[1]
3489 all_done = all_done and node_done
3490 if node_percent is not None:
3491 min_percent = min(min_percent, node_percent)
3493 if min_percent < 100:
3494 self.feedback_fn(" - progress: %.1f%%" % min_percent)
3497 def _EnsureSecondary(self, node):
3498 """Demote a node to secondary.
3501 self.feedback_fn("* switching node %s to secondary mode" % node)
3503 for dev in self.instance.disks:
3504 self.cfg.SetDiskID(dev, node)
3506 result = self.rpc.call_blockdev_close(node, self.instance.name,
3507 self.instance.disks)
3508 msg = result.RemoteFailMsg()
3510 raise errors.OpExecError("Cannot change disk to secondary on node %s,"
3511 " error %s" % (node, msg))
3513 def _GoStandalone(self):
3514 """Disconnect from the network.
3517 self.feedback_fn("* changing into standalone mode")
3518 result = self.rpc.call_drbd_disconnect_net(self.all_nodes, self.nodes_ip,
3519 self.instance.disks)
3520 for node, nres in result.items():
3521 msg = nres.RemoteFailMsg()
3523 raise errors.OpExecError("Cannot disconnect disks node %s,"
3524 " error %s" % (node, msg))
3526 def _GoReconnect(self, multimaster):
3527 """Reconnect to the network.
3533 msg = "single-master"
3534 self.feedback_fn("* changing disks into %s mode" % msg)
3535 result = self.rpc.call_drbd_attach_net(self.all_nodes, self.nodes_ip,
3536 self.instance.disks,
3537 self.instance.name, multimaster)
3538 for node, nres in result.items():
3539 msg = nres.RemoteFailMsg()
3541 raise errors.OpExecError("Cannot change disks config on node %s,"
3542 " error: %s" % (node, msg))
3544 def _ExecCleanup(self):
3545 """Try to cleanup after a failed migration.
3547 The cleanup is done by:
3548 - check that the instance is running only on one node
3549 (and update the config if needed)
3550 - change disks on its secondary node to secondary
3551 - wait until disks are fully synchronized
3552 - disconnect from the network
3553 - change disks into single-master mode
3554 - wait again until disks are fully synchronized
3557 instance = self.instance
3558 target_node = self.target_node
3559 source_node = self.source_node
3561 # check running on only one node
3562 self.feedback_fn("* checking where the instance actually runs"
3563 " (if this hangs, the hypervisor might be in"
3565 ins_l = self.rpc.call_instance_list(self.all_nodes, [instance.hypervisor])
3566 for node, result in ins_l.items():
3568 if not isinstance(result.data, list):
3569 raise errors.OpExecError("Can't contact node '%s'" % node)
3571 runningon_source = instance.name in ins_l[source_node].data
3572 runningon_target = instance.name in ins_l[target_node].data
3574 if runningon_source and runningon_target:
3575 raise errors.OpExecError("Instance seems to be running on two nodes,"
3576 " or the hypervisor is confused. You will have"
3577 " to ensure manually that it runs only on one"
3578 " and restart this operation.")
3580 if not (runningon_source or runningon_target):
3581 raise errors.OpExecError("Instance does not seem to be running at all."
3582 " In this case, it's safer to repair by"
3583 " running 'gnt-instance stop' to ensure disk"
3584 " shutdown, and then restarting it.")
3586 if runningon_target:
3587 # the migration has actually succeeded, we need to update the config
3588 self.feedback_fn("* instance running on secondary node (%s),"
3589 " updating config" % target_node)
3590 instance.primary_node = target_node
3591 self.cfg.Update(instance)
3592 demoted_node = source_node
3594 self.feedback_fn("* instance confirmed to be running on its"
3595 " primary node (%s)" % source_node)
3596 demoted_node = target_node
3598 self._EnsureSecondary(demoted_node)
3600 self._WaitUntilSync()
3601 except errors.OpExecError:
3602 # we ignore here errors, since if the device is standalone, it
3603 # won't be able to sync
3605 self._GoStandalone()
3606 self._GoReconnect(False)
3607 self._WaitUntilSync()
3609 self.feedback_fn("* done")
3611 def _ExecMigration(self):
3612 """Migrate an instance.
3614 The migrate is done by:
3615 - change the disks into dual-master mode
3616 - wait until disks are fully synchronized again
3617 - migrate the instance
3618 - change disks on the new secondary node (the old primary) to secondary
3619 - wait until disks are fully synchronized
3620 - change disks into single-master mode
3623 instance = self.instance
3624 target_node = self.target_node
3625 source_node = self.source_node
3627 self.feedback_fn("* checking disk consistency between source and target")
3628 for dev in instance.disks:
3629 if not _CheckDiskConsistency(self, dev, target_node, False):
3630 raise errors.OpExecError("Disk %s is degraded or not fully"
3631 " synchronized on target node,"
3632 " aborting migrate." % dev.iv_name)
3634 self._EnsureSecondary(target_node)
3635 self._GoStandalone()
3636 self._GoReconnect(True)
3637 self._WaitUntilSync()
3639 self.feedback_fn("* migrating instance to %s" % target_node)
3641 result = self.rpc.call_instance_migrate(source_node, instance,
3642 self.nodes_ip[target_node],
3644 msg = result.RemoteFailMsg()
3646 logging.error("Instance migration failed, trying to revert"
3647 " disk status: %s", msg)
3649 self._EnsureSecondary(target_node)
3650 self._GoStandalone()
3651 self._GoReconnect(False)
3652 self._WaitUntilSync()
3653 except errors.OpExecError, err:
3654 self.LogWarning("Migration failed and I can't reconnect the"
3655 " drives: error '%s'\n"
3656 "Please look and recover the instance status" %
3659 raise errors.OpExecError("Could not migrate instance %s: %s" %
3660 (instance.name, msg))
3663 instance.primary_node = target_node
3664 # distribute new instance config to the other nodes
3665 self.cfg.Update(instance)
3667 self._EnsureSecondary(source_node)
3668 self._WaitUntilSync()
3669 self._GoStandalone()
3670 self._GoReconnect(False)
3671 self._WaitUntilSync()
3673 self.feedback_fn("* done")
3675 def Exec(self, feedback_fn):
3676 """Perform the migration.
3679 self.feedback_fn = feedback_fn
3681 self.source_node = self.instance.primary_node
3682 self.target_node = self.instance.secondary_nodes[0]
3683 self.all_nodes = [self.source_node, self.target_node]
3685 self.source_node: self.cfg.GetNodeInfo(self.source_node).secondary_ip,
3686 self.target_node: self.cfg.GetNodeInfo(self.target_node).secondary_ip,
3689 return self._ExecCleanup()
3691 return self._ExecMigration()
3694 def _CreateBlockDevOnPrimary(lu, node, instance, device, info):
3695 """Create a tree of block devices on the primary node.
3697 This always creates all devices.
3701 for child in device.children:
3702 _CreateBlockDevOnPrimary(lu, node, instance, child, info)
3704 lu.cfg.SetDiskID(device, node)
3705 result = lu.rpc.call_blockdev_create(node, device, device.size,
3706 instance.name, True, info)
3707 msg = result.RemoteFailMsg()
3709 raise errors.OpExecError("Can't create block device %s on primary"
3710 " node %s: %s" % (device, node, msg))
3711 if device.physical_id is None:
3712 device.physical_id = result.data[1]
3715 def _CreateBlockDevOnSecondary(lu, node, instance, device, force, info):
3716 """Create a tree of block devices on a secondary node.
3718 If this device type has to be created on secondaries, create it and
3721 If not, just recurse to children keeping the same 'force' value.
3724 if device.CreateOnSecondary():
3728 for child in device.children:
3729 _CreateBlockDevOnSecondary(lu, node, instance, child, force, info)
3734 lu.cfg.SetDiskID(device, node)
3735 new_id = lu.rpc.call_blockdev_create(node, device, device.size,
3736 instance.name, False, info)
3737 if new_id.failed or not new_id.data:
3738 raise errors.OpExecError("Can't create block device %s on secondary"
3739 " node %s" % (device, node))
3740 if device.physical_id is None:
3741 device.physical_id = new_id
3744 def _GenerateUniqueNames(lu, exts):
3745 """Generate a suitable LV name.
3747 This will generate a logical volume name for the given instance.
3752 new_id = lu.cfg.GenerateUniqueID()
3753 results.append("%s%s" % (new_id, val))
3757 def _GenerateDRBD8Branch(lu, primary, secondary, size, names, iv_name,
3759 """Generate a drbd8 device complete with its children.
3762 port = lu.cfg.AllocatePort()
3763 vgname = lu.cfg.GetVGName()
3764 shared_secret = lu.cfg.GenerateDRBDSecret()
3765 dev_data = objects.Disk(dev_type=constants.LD_LV, size=size,
3766 logical_id=(vgname, names[0]))
3767 dev_meta = objects.Disk(dev_type=constants.LD_LV, size=128,
3768 logical_id=(vgname, names[1]))
3769 drbd_dev = objects.Disk(dev_type=constants.LD_DRBD8, size=size,
3770 logical_id=(primary, secondary, port,
3773 children=[dev_data, dev_meta],
3778 def _GenerateDiskTemplate(lu, template_name,
3779 instance_name, primary_node,
3780 secondary_nodes, disk_info,
3781 file_storage_dir, file_driver,
3783 """Generate the entire disk layout for a given template type.
3786 #TODO: compute space requirements
3788 vgname = lu.cfg.GetVGName()
3789 disk_count = len(disk_info)
3791 if template_name == constants.DT_DISKLESS:
3793 elif template_name == constants.DT_PLAIN:
3794 if len(secondary_nodes) != 0:
3795 raise errors.ProgrammerError("Wrong template configuration")
3797 names = _GenerateUniqueNames(lu, [".disk%d" % i
3798 for i in range(disk_count)])
3799 for idx, disk in enumerate(disk_info):
3800 disk_index = idx + base_index
3801 disk_dev = objects.Disk(dev_type=constants.LD_LV, size=disk["size"],
3802 logical_id=(vgname, names[idx]),
3803 iv_name="disk/%d" % disk_index)
3804 disks.append(disk_dev)
3805 elif template_name == constants.DT_DRBD8:
3806 if len(secondary_nodes) != 1:
3807 raise errors.ProgrammerError("Wrong template configuration")
3808 remote_node = secondary_nodes[0]
3809 minors = lu.cfg.AllocateDRBDMinor(
3810 [primary_node, remote_node] * len(disk_info), instance_name)
3813 for lv_prefix in _GenerateUniqueNames(lu, [".disk%d" % i
3814 for i in range(disk_count)]):
3815 names.append(lv_prefix + "_data")
3816 names.append(lv_prefix + "_meta")
3817 for idx, disk in enumerate(disk_info):
3818 disk_index = idx + base_index
3819 disk_dev = _GenerateDRBD8Branch(lu, primary_node, remote_node,
3820 disk["size"], names[idx*2:idx*2+2],
3821 "disk/%d" % disk_index,
3822 minors[idx*2], minors[idx*2+1])
3823 disks.append(disk_dev)
3824 elif template_name == constants.DT_FILE:
3825 if len(secondary_nodes) != 0:
3826 raise errors.ProgrammerError("Wrong template configuration")
3828 for idx, disk in enumerate(disk_info):
3829 disk_index = idx + base_index
3830 disk_dev = objects.Disk(dev_type=constants.LD_FILE, size=disk["size"],
3831 iv_name="disk/%d" % disk_index,
3832 logical_id=(file_driver,
3833 "%s/disk%d" % (file_storage_dir,
3835 disks.append(disk_dev)
3837 raise errors.ProgrammerError("Invalid disk template '%s'" % template_name)
3841 def _GetInstanceInfoText(instance):
3842 """Compute that text that should be added to the disk's metadata.
3845 return "originstname+%s" % instance.name
3848 def _CreateDisks(lu, instance):
3849 """Create all disks for an instance.
3851 This abstracts away some work from AddInstance.
3853 @type lu: L{LogicalUnit}
3854 @param lu: the logical unit on whose behalf we execute
3855 @type instance: L{objects.Instance}
3856 @param instance: the instance whose disks we should create
3858 @return: the success of the creation
3861 info = _GetInstanceInfoText(instance)
3863 if instance.disk_template == constants.DT_FILE:
3864 file_storage_dir = os.path.dirname(instance.disks[0].logical_id[1])
3865 result = lu.rpc.call_file_storage_dir_create(instance.primary_node,
3868 if result.failed or not result.data:
3869 raise errors.OpExecError("Could not connect to node '%s'" %
3870 instance.primary_node)
3872 if not result.data[0]:
3873 raise errors.OpExecError("Failed to create directory '%s'" %
3876 # Note: this needs to be kept in sync with adding of disks in
3877 # LUSetInstanceParams
3878 for device in instance.disks:
3879 logging.info("Creating volume %s for instance %s",
3880 device.iv_name, instance.name)
3882 for secondary_node in instance.secondary_nodes:
3883 _CreateBlockDevOnSecondary(lu, secondary_node, instance,
3884 device, False, info)
3886 _CreateBlockDevOnPrimary(lu, instance.primary_node,
3887 instance, device, info)
3890 def _RemoveDisks(lu, instance):
3891 """Remove all disks for an instance.
3893 This abstracts away some work from `AddInstance()` and
3894 `RemoveInstance()`. Note that in case some of the devices couldn't
3895 be removed, the removal will continue with the other ones (compare
3896 with `_CreateDisks()`).
3898 @type lu: L{LogicalUnit}
3899 @param lu: the logical unit on whose behalf we execute
3900 @type instance: L{objects.Instance}
3901 @param instance: the instance whose disks we should remove
3903 @return: the success of the removal
3906 logging.info("Removing block devices for instance %s", instance.name)
3909 for device in instance.disks:
3910 for node, disk in device.ComputeNodeTree(instance.primary_node):
3911 lu.cfg.SetDiskID(disk, node)
3912 result = lu.rpc.call_blockdev_remove(node, disk)
3913 if result.failed or not result.data:
3914 lu.proc.LogWarning("Could not remove block device %s on node %s,"
3915 " continuing anyway", device.iv_name, node)
3918 if instance.disk_template == constants.DT_FILE:
3919 file_storage_dir = os.path.dirname(instance.disks[0].logical_id[1])
3920 result = lu.rpc.call_file_storage_dir_remove(instance.primary_node,
3922 if result.failed or not result.data:
3923 logging.error("Could not remove directory '%s'", file_storage_dir)
3929 def _ComputeDiskSize(disk_template, disks):
3930 """Compute disk size requirements in the volume group
3933 # Required free disk space as a function of disk and swap space
3935 constants.DT_DISKLESS: None,
3936 constants.DT_PLAIN: sum(d["size"] for d in disks),
3937 # 128 MB are added for drbd metadata for each disk
3938 constants.DT_DRBD8: sum(d["size"] + 128 for d in disks),
3939 constants.DT_FILE: None,
3942 if disk_template not in req_size_dict:
3943 raise errors.ProgrammerError("Disk template '%s' size requirement"
3944 " is unknown" % disk_template)
3946 return req_size_dict[disk_template]
3949 def _CheckHVParams(lu, nodenames, hvname, hvparams):
3950 """Hypervisor parameter validation.
3952 This function abstract the hypervisor parameter validation to be
3953 used in both instance create and instance modify.
3955 @type lu: L{LogicalUnit}
3956 @param lu: the logical unit for which we check
3957 @type nodenames: list
3958 @param nodenames: the list of nodes on which we should check
3959 @type hvname: string
3960 @param hvname: the name of the hypervisor we should use
3961 @type hvparams: dict
3962 @param hvparams: the parameters which we need to check
3963 @raise errors.OpPrereqError: if the parameters are not valid
3966 hvinfo = lu.rpc.call_hypervisor_validate_params(nodenames,
3969 for node in nodenames:
3972 if not info.data or not isinstance(info.data, (tuple, list)):
3973 raise errors.OpPrereqError("Cannot get current information"
3974 " from node '%s' (%s)" % (node, info.data))
3975 if not info.data[0]:
3976 raise errors.OpPrereqError("Hypervisor parameter validation failed:"
3977 " %s" % info.data[1])
3980 class LUCreateInstance(LogicalUnit):
3981 """Create an instance.
3984 HPATH = "instance-add"
3985 HTYPE = constants.HTYPE_INSTANCE
3986 _OP_REQP = ["instance_name", "disks", "disk_template",
3988 "wait_for_sync", "ip_check", "nics",
3989 "hvparams", "beparams"]
3992 def _ExpandNode(self, node):
3993 """Expands and checks one node name.
3996 node_full = self.cfg.ExpandNodeName(node)
3997 if node_full is None:
3998 raise errors.OpPrereqError("Unknown node %s" % node)
4001 def ExpandNames(self):
4002 """ExpandNames for CreateInstance.
4004 Figure out the right locks for instance creation.
4007 self.needed_locks = {}
4009 # set optional parameters to none if they don't exist
4010 for attr in ["pnode", "snode", "iallocator", "hypervisor"]:
4011 if not hasattr(self.op, attr):
4012 setattr(self.op, attr, None)
4014 # cheap checks, mostly valid constants given
4016 # verify creation mode
4017 if self.op.mode not in (constants.INSTANCE_CREATE,
4018 constants.INSTANCE_IMPORT):
4019 raise errors.OpPrereqError("Invalid instance creation mode '%s'" %
4022 # disk template and mirror node verification
4023 if self.op.disk_template not in constants.DISK_TEMPLATES:
4024 raise errors.OpPrereqError("Invalid disk template name")
4026 if self.op.hypervisor is None:
4027 self.op.hypervisor = self.cfg.GetHypervisorType()
4029 cluster = self.cfg.GetClusterInfo()
4030 enabled_hvs = cluster.enabled_hypervisors
4031 if self.op.hypervisor not in enabled_hvs:
4032 raise errors.OpPrereqError("Selected hypervisor (%s) not enabled in the"
4033 " cluster (%s)" % (self.op.hypervisor,
4034 ",".join(enabled_hvs)))
4036 # check hypervisor parameter syntax (locally)
4038 filled_hvp = cluster.FillDict(cluster.hvparams[self.op.hypervisor],
4040 hv_type = hypervisor.GetHypervisor(self.op.hypervisor)
4041 hv_type.CheckParameterSyntax(filled_hvp)
4043 # fill and remember the beparams dict
4044 utils.CheckBEParams(self.op.beparams)
4045 self.be_full = cluster.FillDict(cluster.beparams[constants.BEGR_DEFAULT],
4048 #### instance parameters check
4050 # instance name verification
4051 hostname1 = utils.HostInfo(self.op.instance_name)
4052 self.op.instance_name = instance_name = hostname1.name
4054 # this is just a preventive check, but someone might still add this
4055 # instance in the meantime, and creation will fail at lock-add time
4056 if instance_name in self.cfg.GetInstanceList():
4057 raise errors.OpPrereqError("Instance '%s' is already in the cluster" %
4060 self.add_locks[locking.LEVEL_INSTANCE] = instance_name
4064 for nic in self.op.nics:
4065 # ip validity checks
4066 ip = nic.get("ip", None)
4067 if ip is None or ip.lower() == "none":
4069 elif ip.lower() == constants.VALUE_AUTO:
4070 nic_ip = hostname1.ip
4072 if not utils.IsValidIP(ip):
4073 raise errors.OpPrereqError("Given IP address '%s' doesn't look"
4074 " like a valid IP" % ip)
4077 # MAC address verification
4078 mac = nic.get("mac", constants.VALUE_AUTO)
4079 if mac not in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
4080 if not utils.IsValidMac(mac.lower()):
4081 raise errors.OpPrereqError("Invalid MAC address specified: %s" %
4083 # bridge verification
4084 bridge = nic.get("bridge", self.cfg.GetDefBridge())
4085 self.nics.append(objects.NIC(mac=mac, ip=nic_ip, bridge=bridge))
4087 # disk checks/pre-build
4089 for disk in self.op.disks:
4090 mode = disk.get("mode", constants.DISK_RDWR)
4091 if mode not in constants.DISK_ACCESS_SET:
4092 raise errors.OpPrereqError("Invalid disk access mode '%s'" %
4094 size = disk.get("size", None)
4096 raise errors.OpPrereqError("Missing disk size")
4100 raise errors.OpPrereqError("Invalid disk size '%s'" % size)
4101 self.disks.append({"size": size, "mode": mode})
4103 # used in CheckPrereq for ip ping check
4104 self.check_ip = hostname1.ip
4106 # file storage checks
4107 if (self.op.file_driver and
4108 not self.op.file_driver in constants.FILE_DRIVER):
4109 raise errors.OpPrereqError("Invalid file driver name '%s'" %
4110 self.op.file_driver)
4112 if self.op.file_storage_dir and os.path.isabs(self.op.file_storage_dir):
4113 raise errors.OpPrereqError("File storage directory path not absolute")
4115 ### Node/iallocator related checks
4116 if [self.op.iallocator, self.op.pnode].count(None) != 1:
4117 raise errors.OpPrereqError("One and only one of iallocator and primary"
4118 " node must be given")
4120 if self.op.iallocator:
4121 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
4123 self.op.pnode = self._ExpandNode(self.op.pnode)
4124 nodelist = [self.op.pnode]
4125 if self.op.snode is not None:
4126 self.op.snode = self._ExpandNode(self.op.snode)
4127 nodelist.append(self.op.snode)
4128 self.needed_locks[locking.LEVEL_NODE] = nodelist
4130 # in case of import lock the source node too
4131 if self.op.mode == constants.INSTANCE_IMPORT:
4132 src_node = getattr(self.op, "src_node", None)
4133 src_path = getattr(self.op, "src_path", None)
4135 if src_path is None:
4136 self.op.src_path = src_path = self.op.instance_name
4138 if src_node is None:
4139 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
4140 self.op.src_node = None
4141 if os.path.isabs(src_path):
4142 raise errors.OpPrereqError("Importing an instance from an absolute"
4143 " path requires a source node option.")
4145 self.op.src_node = src_node = self._ExpandNode(src_node)
4146 if self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET:
4147 self.needed_locks[locking.LEVEL_NODE].append(src_node)
4148 if not os.path.isabs(src_path):
4149 self.op.src_path = src_path = \
4150 os.path.join(constants.EXPORT_DIR, src_path)
4152 else: # INSTANCE_CREATE
4153 if getattr(self.op, "os_type", None) is None:
4154 raise errors.OpPrereqError("No guest OS specified")
4156 def _RunAllocator(self):
4157 """Run the allocator based on input opcode.
4160 nics = [n.ToDict() for n in self.nics]
4161 ial = IAllocator(self,
4162 mode=constants.IALLOCATOR_MODE_ALLOC,
4163 name=self.op.instance_name,
4164 disk_template=self.op.disk_template,
4167 vcpus=self.be_full[constants.BE_VCPUS],
4168 mem_size=self.be_full[constants.BE_MEMORY],
4171 hypervisor=self.op.hypervisor,
4174 ial.Run(self.op.iallocator)
4177 raise errors.OpPrereqError("Can't compute nodes using"
4178 " iallocator '%s': %s" % (self.op.iallocator,
4180 if len(ial.nodes) != ial.required_nodes:
4181 raise errors.OpPrereqError("iallocator '%s' returned invalid number"
4182 " of nodes (%s), required %s" %
4183 (self.op.iallocator, len(ial.nodes),
4184 ial.required_nodes))
4185 self.op.pnode = ial.nodes[0]
4186 self.LogInfo("Selected nodes for instance %s via iallocator %s: %s",
4187 self.op.instance_name, self.op.iallocator,
4188 ", ".join(ial.nodes))
4189 if ial.required_nodes == 2:
4190 self.op.snode = ial.nodes[1]
4192 def BuildHooksEnv(self):
4195 This runs on master, primary and secondary nodes of the instance.
4199 "INSTANCE_DISK_TEMPLATE": self.op.disk_template,
4200 "INSTANCE_DISK_SIZE": ",".join(str(d["size"]) for d in self.disks),
4201 "INSTANCE_ADD_MODE": self.op.mode,
4203 if self.op.mode == constants.INSTANCE_IMPORT:
4204 env["INSTANCE_SRC_NODE"] = self.op.src_node
4205 env["INSTANCE_SRC_PATH"] = self.op.src_path
4206 env["INSTANCE_SRC_IMAGES"] = self.src_images
4208 env.update(_BuildInstanceHookEnv(name=self.op.instance_name,
4209 primary_node=self.op.pnode,
4210 secondary_nodes=self.secondaries,
4211 status=self.instance_status,
4212 os_type=self.op.os_type,
4213 memory=self.be_full[constants.BE_MEMORY],
4214 vcpus=self.be_full[constants.BE_VCPUS],
4215 nics=[(n.ip, n.bridge, n.mac) for n in self.nics],
4218 nl = ([self.cfg.GetMasterNode(), self.op.pnode] +
4223 def CheckPrereq(self):
4224 """Check prerequisites.
4227 if (not self.cfg.GetVGName() and
4228 self.op.disk_template not in constants.DTS_NOT_LVM):
4229 raise errors.OpPrereqError("Cluster does not support lvm-based"
4233 if self.op.mode == constants.INSTANCE_IMPORT:
4234 src_node = self.op.src_node
4235 src_path = self.op.src_path
4237 if src_node is None:
4238 exp_list = self.rpc.call_export_list(
4239 self.acquired_locks[locking.LEVEL_NODE])
4241 for node in exp_list:
4242 if not exp_list[node].failed and src_path in exp_list[node].data:
4244 self.op.src_node = src_node = node
4245 self.op.src_path = src_path = os.path.join(constants.EXPORT_DIR,
4249 raise errors.OpPrereqError("No export found for relative path %s" %
4252 _CheckNodeOnline(self, src_node)
4253 result = self.rpc.call_export_info(src_node, src_path)
4256 raise errors.OpPrereqError("No export found in dir %s" % src_path)
4258 export_info = result.data
4259 if not export_info.has_section(constants.INISECT_EXP):
4260 raise errors.ProgrammerError("Corrupted export config")
4262 ei_version = export_info.get(constants.INISECT_EXP, 'version')
4263 if (int(ei_version) != constants.EXPORT_VERSION):
4264 raise errors.OpPrereqError("Wrong export version %s (wanted %d)" %
4265 (ei_version, constants.EXPORT_VERSION))
4267 # Check that the new instance doesn't have less disks than the export
4268 instance_disks = len(self.disks)
4269 export_disks = export_info.getint(constants.INISECT_INS, 'disk_count')
4270 if instance_disks < export_disks:
4271 raise errors.OpPrereqError("Not enough disks to import."
4272 " (instance: %d, export: %d)" %
4273 (instance_disks, export_disks))
4275 self.op.os_type = export_info.get(constants.INISECT_EXP, 'os')
4277 for idx in range(export_disks):
4278 option = 'disk%d_dump' % idx
4279 if export_info.has_option(constants.INISECT_INS, option):
4280 # FIXME: are the old os-es, disk sizes, etc. useful?
4281 export_name = export_info.get(constants.INISECT_INS, option)
4282 image = os.path.join(src_path, export_name)
4283 disk_images.append(image)
4285 disk_images.append(False)
4287 self.src_images = disk_images
4289 old_name = export_info.get(constants.INISECT_INS, 'name')
4290 # FIXME: int() here could throw a ValueError on broken exports
4291 exp_nic_count = int(export_info.get(constants.INISECT_INS, 'nic_count'))
4292 if self.op.instance_name == old_name:
4293 for idx, nic in enumerate(self.nics):
4294 if nic.mac == constants.VALUE_AUTO and exp_nic_count >= idx:
4295 nic_mac_ini = 'nic%d_mac' % idx
4296 nic.mac = export_info.get(constants.INISECT_INS, nic_mac_ini)
4298 # ip ping checks (we use the same ip that was resolved in ExpandNames)
4299 if self.op.start and not self.op.ip_check:
4300 raise errors.OpPrereqError("Cannot ignore IP address conflicts when"
4301 " adding an instance in start mode")
4303 if self.op.ip_check:
4304 if utils.TcpPing(self.check_ip, constants.DEFAULT_NODED_PORT):
4305 raise errors.OpPrereqError("IP %s of instance %s already in use" %
4306 (self.check_ip, self.op.instance_name))
4310 if self.op.iallocator is not None:
4311 self._RunAllocator()
4313 #### node related checks
4315 # check primary node
4316 self.pnode = pnode = self.cfg.GetNodeInfo(self.op.pnode)
4317 assert self.pnode is not None, \
4318 "Cannot retrieve locked node %s" % self.op.pnode
4320 raise errors.OpPrereqError("Cannot use offline primary node '%s'" %
4323 self.secondaries = []
4325 # mirror node verification
4326 if self.op.disk_template in constants.DTS_NET_MIRROR:
4327 if self.op.snode is None:
4328 raise errors.OpPrereqError("The networked disk templates need"
4330 if self.op.snode == pnode.name:
4331 raise errors.OpPrereqError("The secondary node cannot be"
4332 " the primary node.")
4333 self.secondaries.append(self.op.snode)
4334 _CheckNodeOnline(self, self.op.snode)
4336 nodenames = [pnode.name] + self.secondaries
4338 req_size = _ComputeDiskSize(self.op.disk_template,
4341 # Check lv size requirements
4342 if req_size is not None:
4343 nodeinfo = self.rpc.call_node_info(nodenames, self.cfg.GetVGName(),
4345 for node in nodenames:
4346 info = nodeinfo[node]
4350 raise errors.OpPrereqError("Cannot get current information"
4351 " from node '%s'" % node)
4352 vg_free = info.get('vg_free', None)
4353 if not isinstance(vg_free, int):
4354 raise errors.OpPrereqError("Can't compute free disk space on"
4356 if req_size > info['vg_free']:
4357 raise errors.OpPrereqError("Not enough disk space on target node %s."
4358 " %d MB available, %d MB required" %
4359 (node, info['vg_free'], req_size))
4361 _CheckHVParams(self, nodenames, self.op.hypervisor, self.op.hvparams)
4364 result = self.rpc.call_os_get(pnode.name, self.op.os_type)
4366 if not isinstance(result.data, objects.OS):
4367 raise errors.OpPrereqError("OS '%s' not in supported os list for"
4368 " primary node" % self.op.os_type)
4370 # bridge check on primary node
4371 bridges = [n.bridge for n in self.nics]
4372 result = self.rpc.call_bridges_exist(self.pnode.name, bridges)
4375 raise errors.OpPrereqError("One of the target bridges '%s' does not"
4376 " exist on destination node '%s'" %
4377 (",".join(bridges), pnode.name))
4379 # memory check on primary node
4381 _CheckNodeFreeMemory(self, self.pnode.name,
4382 "creating instance %s" % self.op.instance_name,
4383 self.be_full[constants.BE_MEMORY],
4387 self.instance_status = 'up'
4389 self.instance_status = 'down'
4391 def Exec(self, feedback_fn):
4392 """Create and add the instance to the cluster.
4395 instance = self.op.instance_name
4396 pnode_name = self.pnode.name
4398 for nic in self.nics:
4399 if nic.mac in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
4400 nic.mac = self.cfg.GenerateMAC()
4402 ht_kind = self.op.hypervisor
4403 if ht_kind in constants.HTS_REQ_PORT:
4404 network_port = self.cfg.AllocatePort()
4408 ##if self.op.vnc_bind_address is None:
4409 ## self.op.vnc_bind_address = constants.VNC_DEFAULT_BIND_ADDRESS
4411 # this is needed because os.path.join does not accept None arguments
4412 if self.op.file_storage_dir is None:
4413 string_file_storage_dir = ""
4415 string_file_storage_dir = self.op.file_storage_dir
4417 # build the full file storage dir path
4418 file_storage_dir = os.path.normpath(os.path.join(
4419 self.cfg.GetFileStorageDir(),
4420 string_file_storage_dir, instance))
4423 disks = _GenerateDiskTemplate(self,
4424 self.op.disk_template,
4425 instance, pnode_name,
4429 self.op.file_driver,
4432 iobj = objects.Instance(name=instance, os=self.op.os_type,
4433 primary_node=pnode_name,
4434 nics=self.nics, disks=disks,
4435 disk_template=self.op.disk_template,
4436 status=self.instance_status,
4437 network_port=network_port,
4438 beparams=self.op.beparams,
4439 hvparams=self.op.hvparams,
4440 hypervisor=self.op.hypervisor,
4443 feedback_fn("* creating instance disks...")
4445 _CreateDisks(self, iobj)
4446 except errors.OpExecError:
4447 self.LogWarning("Device creation failed, reverting...")
4449 _RemoveDisks(self, iobj)
4451 self.cfg.ReleaseDRBDMinors(instance)
4454 feedback_fn("adding instance %s to cluster config" % instance)
4456 self.cfg.AddInstance(iobj)
4457 # Declare that we don't want to remove the instance lock anymore, as we've
4458 # added the instance to the config
4459 del self.remove_locks[locking.LEVEL_INSTANCE]
4460 # Remove the temp. assignements for the instance's drbds
4461 self.cfg.ReleaseDRBDMinors(instance)
4462 # Unlock all the nodes
4463 if self.op.mode == constants.INSTANCE_IMPORT:
4464 nodes_keep = [self.op.src_node]
4465 nodes_release = [node for node in self.acquired_locks[locking.LEVEL_NODE]
4466 if node != self.op.src_node]
4467 self.context.glm.release(locking.LEVEL_NODE, nodes_release)
4468 self.acquired_locks[locking.LEVEL_NODE] = nodes_keep
4470 self.context.glm.release(locking.LEVEL_NODE)
4471 del self.acquired_locks[locking.LEVEL_NODE]
4473 if self.op.wait_for_sync:
4474 disk_abort = not _WaitForSync(self, iobj)
4475 elif iobj.disk_template in constants.DTS_NET_MIRROR:
4476 # make sure the disks are not degraded (still sync-ing is ok)
4478 feedback_fn("* checking mirrors status")
4479 disk_abort = not _WaitForSync(self, iobj, oneshot=True)
4484 _RemoveDisks(self, iobj)
4485 self.cfg.RemoveInstance(iobj.name)
4486 # Make sure the instance lock gets removed
4487 self.remove_locks[locking.LEVEL_INSTANCE] = iobj.name
4488 raise errors.OpExecError("There are some degraded disks for"
4491 feedback_fn("creating os for instance %s on node %s" %
4492 (instance, pnode_name))
4494 if iobj.disk_template != constants.DT_DISKLESS:
4495 if self.op.mode == constants.INSTANCE_CREATE:
4496 feedback_fn("* running the instance OS create scripts...")
4497 result = self.rpc.call_instance_os_add(pnode_name, iobj)
4500 raise errors.OpExecError("Could not add os for instance %s"
4502 (instance, pnode_name))
4504 elif self.op.mode == constants.INSTANCE_IMPORT:
4505 feedback_fn("* running the instance OS import scripts...")
4506 src_node = self.op.src_node
4507 src_images = self.src_images
4508 cluster_name = self.cfg.GetClusterName()
4509 import_result = self.rpc.call_instance_os_import(pnode_name, iobj,
4510 src_node, src_images,
4512 import_result.Raise()
4513 for idx, result in enumerate(import_result.data):
4515 self.LogWarning("Could not import the image %s for instance"
4516 " %s, disk %d, on node %s" %
4517 (src_images[idx], instance, idx, pnode_name))
4519 # also checked in the prereq part
4520 raise errors.ProgrammerError("Unknown OS initialization mode '%s'"
4524 logging.info("Starting instance %s on node %s", instance, pnode_name)
4525 feedback_fn("* starting instance...")
4526 result = self.rpc.call_instance_start(pnode_name, iobj, None)
4529 raise errors.OpExecError("Could not start instance")
4532 class LUConnectConsole(NoHooksLU):
4533 """Connect to an instance's console.
4535 This is somewhat special in that it returns the command line that
4536 you need to run on the master node in order to connect to the
4540 _OP_REQP = ["instance_name"]
4543 def ExpandNames(self):
4544 self._ExpandAndLockInstance()
4546 def CheckPrereq(self):
4547 """Check prerequisites.
4549 This checks that the instance is in the cluster.
4552 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
4553 assert self.instance is not None, \
4554 "Cannot retrieve locked instance %s" % self.op.instance_name
4555 _CheckNodeOnline(self, self.instance.primary_node)
4557 def Exec(self, feedback_fn):
4558 """Connect to the console of an instance
4561 instance = self.instance
4562 node = instance.primary_node
4564 node_insts = self.rpc.call_instance_list([node],
4565 [instance.hypervisor])[node]
4568 if instance.name not in node_insts.data:
4569 raise errors.OpExecError("Instance %s is not running." % instance.name)
4571 logging.debug("Connecting to console of %s on %s", instance.name, node)
4573 hyper = hypervisor.GetHypervisor(instance.hypervisor)
4574 console_cmd = hyper.GetShellCommandForConsole(instance)
4577 return self.ssh.BuildCmd(node, "root", console_cmd, batch=True, tty=True)
4580 class LUReplaceDisks(LogicalUnit):
4581 """Replace the disks of an instance.
4584 HPATH = "mirrors-replace"
4585 HTYPE = constants.HTYPE_INSTANCE
4586 _OP_REQP = ["instance_name", "mode", "disks"]
4589 def CheckArguments(self):
4590 if not hasattr(self.op, "remote_node"):
4591 self.op.remote_node = None
4592 if not hasattr(self.op, "iallocator"):
4593 self.op.iallocator = None
4595 # check for valid parameter combination
4596 cnt = [self.op.remote_node, self.op.iallocator].count(None)
4597 if self.op.mode == constants.REPLACE_DISK_CHG:
4599 raise errors.OpPrereqError("When changing the secondary either an"
4600 " iallocator script must be used or the"
4603 raise errors.OpPrereqError("Give either the iallocator or the new"
4604 " secondary, not both")
4605 else: # not replacing the secondary
4607 raise errors.OpPrereqError("The iallocator and new node options can"
4608 " be used only when changing the"
4611 def ExpandNames(self):
4612 self._ExpandAndLockInstance()
4614 if self.op.iallocator is not None:
4615 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
4616 elif self.op.remote_node is not None:
4617 remote_node = self.cfg.ExpandNodeName(self.op.remote_node)
4618 if remote_node is None:
4619 raise errors.OpPrereqError("Node '%s' not known" %
4620 self.op.remote_node)
4621 self.op.remote_node = remote_node
4622 self.needed_locks[locking.LEVEL_NODE] = [remote_node]
4623 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_APPEND
4625 self.needed_locks[locking.LEVEL_NODE] = []
4626 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
4628 def DeclareLocks(self, level):
4629 # If we're not already locking all nodes in the set we have to declare the
4630 # instance's primary/secondary nodes.
4631 if (level == locking.LEVEL_NODE and
4632 self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET):
4633 self._LockInstancesNodes()
4635 def _RunAllocator(self):
4636 """Compute a new secondary node using an IAllocator.
4639 ial = IAllocator(self,
4640 mode=constants.IALLOCATOR_MODE_RELOC,
4641 name=self.op.instance_name,
4642 relocate_from=[self.sec_node])
4644 ial.Run(self.op.iallocator)
4647 raise errors.OpPrereqError("Can't compute nodes using"
4648 " iallocator '%s': %s" % (self.op.iallocator,
4650 if len(ial.nodes) != ial.required_nodes:
4651 raise errors.OpPrereqError("iallocator '%s' returned invalid number"
4652 " of nodes (%s), required %s" %
4653 (len(ial.nodes), ial.required_nodes))
4654 self.op.remote_node = ial.nodes[0]
4655 self.LogInfo("Selected new secondary for the instance: %s",
4656 self.op.remote_node)
4658 def BuildHooksEnv(self):
4661 This runs on the master, the primary and all the secondaries.
4665 "MODE": self.op.mode,
4666 "NEW_SECONDARY": self.op.remote_node,
4667 "OLD_SECONDARY": self.instance.secondary_nodes[0],
4669 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
4671 self.cfg.GetMasterNode(),
4672 self.instance.primary_node,
4674 if self.op.remote_node is not None:
4675 nl.append(self.op.remote_node)
4678 def CheckPrereq(self):
4679 """Check prerequisites.
4681 This checks that the instance is in the cluster.
4684 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
4685 assert instance is not None, \
4686 "Cannot retrieve locked instance %s" % self.op.instance_name
4687 self.instance = instance
4689 if instance.disk_template != constants.DT_DRBD8:
4690 raise errors.OpPrereqError("Can only run replace disks for DRBD8-based"
4693 if len(instance.secondary_nodes) != 1:
4694 raise errors.OpPrereqError("The instance has a strange layout,"
4695 " expected one secondary but found %d" %
4696 len(instance.secondary_nodes))
4698 self.sec_node = instance.secondary_nodes[0]
4700 if self.op.iallocator is not None:
4701 self._RunAllocator()
4703 remote_node = self.op.remote_node
4704 if remote_node is not None:
4705 self.remote_node_info = self.cfg.GetNodeInfo(remote_node)
4706 assert self.remote_node_info is not None, \
4707 "Cannot retrieve locked node %s" % remote_node
4709 self.remote_node_info = None
4710 if remote_node == instance.primary_node:
4711 raise errors.OpPrereqError("The specified node is the primary node of"
4713 elif remote_node == self.sec_node:
4714 raise errors.OpPrereqError("The specified node is already the"
4715 " secondary node of the instance.")
4717 if self.op.mode == constants.REPLACE_DISK_PRI:
4718 n1 = self.tgt_node = instance.primary_node
4719 n2 = self.oth_node = self.sec_node
4720 elif self.op.mode == constants.REPLACE_DISK_SEC:
4721 n1 = self.tgt_node = self.sec_node
4722 n2 = self.oth_node = instance.primary_node
4723 elif self.op.mode == constants.REPLACE_DISK_CHG:
4724 n1 = self.new_node = remote_node
4725 n2 = self.oth_node = instance.primary_node
4726 self.tgt_node = self.sec_node
4728 raise errors.ProgrammerError("Unhandled disk replace mode")
4730 _CheckNodeOnline(self, n1)
4731 _CheckNodeOnline(self, n2)
4733 if not self.op.disks:
4734 self.op.disks = range(len(instance.disks))
4736 for disk_idx in self.op.disks:
4737 instance.FindDisk(disk_idx)
4739 def _ExecD8DiskOnly(self, feedback_fn):
4740 """Replace a disk on the primary or secondary for dbrd8.
4742 The algorithm for replace is quite complicated:
4744 1. for each disk to be replaced:
4746 1. create new LVs on the target node with unique names
4747 1. detach old LVs from the drbd device
4748 1. rename old LVs to name_replaced.<time_t>
4749 1. rename new LVs to old LVs
4750 1. attach the new LVs (with the old names now) to the drbd device
4752 1. wait for sync across all devices
4754 1. for each modified disk:
4756 1. remove old LVs (which have the name name_replaces.<time_t>)
4758 Failures are not very well handled.
4762 warning, info = (self.proc.LogWarning, self.proc.LogInfo)
4763 instance = self.instance
4765 vgname = self.cfg.GetVGName()
4768 tgt_node = self.tgt_node
4769 oth_node = self.oth_node
4771 # Step: check device activation
4772 self.proc.LogStep(1, steps_total, "check device existence")
4773 info("checking volume groups")
4774 my_vg = cfg.GetVGName()
4775 results = self.rpc.call_vg_list([oth_node, tgt_node])
4777 raise errors.OpExecError("Can't list volume groups on the nodes")
4778 for node in oth_node, tgt_node:
4780 if res.failed or not res.data or my_vg not in res.data:
4781 raise errors.OpExecError("Volume group '%s' not found on %s" %
4783 for idx, dev in enumerate(instance.disks):
4784 if idx not in self.op.disks:
4786 for node in tgt_node, oth_node:
4787 info("checking disk/%d on %s" % (idx, node))
4788 cfg.SetDiskID(dev, node)
4789 if not self.rpc.call_blockdev_find(node, dev):
4790 raise errors.OpExecError("Can't find disk/%d on node %s" %
4793 # Step: check other node consistency
4794 self.proc.LogStep(2, steps_total, "check peer consistency")
4795 for idx, dev in enumerate(instance.disks):
4796 if idx not in self.op.disks:
4798 info("checking disk/%d consistency on %s" % (idx, oth_node))
4799 if not _CheckDiskConsistency(self, dev, oth_node,
4800 oth_node==instance.primary_node):
4801 raise errors.OpExecError("Peer node (%s) has degraded storage, unsafe"
4802 " to replace disks on this node (%s)" %
4803 (oth_node, tgt_node))
4805 # Step: create new storage
4806 self.proc.LogStep(3, steps_total, "allocate new storage")
4807 for idx, dev in enumerate(instance.disks):
4808 if idx not in self.op.disks:
4811 cfg.SetDiskID(dev, tgt_node)
4812 lv_names = [".disk%d_%s" % (idx, suf)
4813 for suf in ["data", "meta"]]
4814 names = _GenerateUniqueNames(self, lv_names)
4815 lv_data = objects.Disk(dev_type=constants.LD_LV, size=size,
4816 logical_id=(vgname, names[0]))
4817 lv_meta = objects.Disk(dev_type=constants.LD_LV, size=128,
4818 logical_id=(vgname, names[1]))
4819 new_lvs = [lv_data, lv_meta]
4820 old_lvs = dev.children
4821 iv_names[dev.iv_name] = (dev, old_lvs, new_lvs)
4822 info("creating new local storage on %s for %s" %
4823 (tgt_node, dev.iv_name))
4824 # since we *always* want to create this LV, we use the
4825 # _Create...OnPrimary (which forces the creation), even if we
4826 # are talking about the secondary node
4827 for new_lv in new_lvs:
4828 _CreateBlockDevOnPrimary(self, tgt_node, instance, new_lv,
4829 _GetInstanceInfoText(instance))
4831 # Step: for each lv, detach+rename*2+attach
4832 self.proc.LogStep(4, steps_total, "change drbd configuration")
4833 for dev, old_lvs, new_lvs in iv_names.itervalues():
4834 info("detaching %s drbd from local storage" % dev.iv_name)
4835 result = self.rpc.call_blockdev_removechildren(tgt_node, dev, old_lvs)
4838 raise errors.OpExecError("Can't detach drbd from local storage on node"
4839 " %s for device %s" % (tgt_node, dev.iv_name))
4841 #cfg.Update(instance)
4843 # ok, we created the new LVs, so now we know we have the needed
4844 # storage; as such, we proceed on the target node to rename
4845 # old_lv to _old, and new_lv to old_lv; note that we rename LVs
4846 # using the assumption that logical_id == physical_id (which in
4847 # turn is the unique_id on that node)
4849 # FIXME(iustin): use a better name for the replaced LVs
4850 temp_suffix = int(time.time())
4851 ren_fn = lambda d, suff: (d.physical_id[0],
4852 d.physical_id[1] + "_replaced-%s" % suff)
4853 # build the rename list based on what LVs exist on the node
4855 for to_ren in old_lvs:
4856 find_res = self.rpc.call_blockdev_find(tgt_node, to_ren)
4857 if not find_res.failed and find_res.data is not None: # device exists
4858 rlist.append((to_ren, ren_fn(to_ren, temp_suffix)))
4860 info("renaming the old LVs on the target node")
4861 result = self.rpc.call_blockdev_rename(tgt_node, rlist)
4864 raise errors.OpExecError("Can't rename old LVs on node %s" % tgt_node)
4865 # now we rename the new LVs to the old LVs
4866 info("renaming the new LVs on the target node")
4867 rlist = [(new, old.physical_id) for old, new in zip(old_lvs, new_lvs)]
4868 result = self.rpc.call_blockdev_rename(tgt_node, rlist)
4871 raise errors.OpExecError("Can't rename new LVs on node %s" % tgt_node)
4873 for old, new in zip(old_lvs, new_lvs):
4874 new.logical_id = old.logical_id
4875 cfg.SetDiskID(new, tgt_node)
4877 for disk in old_lvs:
4878 disk.logical_id = ren_fn(disk, temp_suffix)
4879 cfg.SetDiskID(disk, tgt_node)
4881 # now that the new lvs have the old name, we can add them to the device
4882 info("adding new mirror component on %s" % tgt_node)
4883 result = self.rpc.call_blockdev_addchildren(tgt_node, dev, new_lvs)
4884 if result.failed or not result.data:
4885 for new_lv in new_lvs:
4886 result = self.rpc.call_blockdev_remove(tgt_node, new_lv)
4887 if result.failed or not result.data:
4888 warning("Can't rollback device %s", hint="manually cleanup unused"
4890 raise errors.OpExecError("Can't add local storage to drbd")
4892 dev.children = new_lvs
4893 cfg.Update(instance)
4895 # Step: wait for sync
4897 # this can fail as the old devices are degraded and _WaitForSync
4898 # does a combined result over all disks, so we don't check its
4900 self.proc.LogStep(5, steps_total, "sync devices")
4901 _WaitForSync(self, instance, unlock=True)
4903 # so check manually all the devices
4904 for name, (dev, old_lvs, new_lvs) in iv_names.iteritems():
4905 cfg.SetDiskID(dev, instance.primary_node)
4906 result = self.rpc.call_blockdev_find(instance.primary_node, dev)
4907 if result.failed or result.data[5]:
4908 raise errors.OpExecError("DRBD device %s is degraded!" % name)
4910 # Step: remove old storage
4911 self.proc.LogStep(6, steps_total, "removing old storage")
4912 for name, (dev, old_lvs, new_lvs) in iv_names.iteritems():
4913 info("remove logical volumes for %s" % name)
4915 cfg.SetDiskID(lv, tgt_node)
4916 result = self.rpc.call_blockdev_remove(tgt_node, lv)
4917 if result.failed or not result.data:
4918 warning("Can't remove old LV", hint="manually remove unused LVs")
4921 def _ExecD8Secondary(self, feedback_fn):
4922 """Replace the secondary node for drbd8.
4924 The algorithm for replace is quite complicated:
4925 - for all disks of the instance:
4926 - create new LVs on the new node with same names
4927 - shutdown the drbd device on the old secondary
4928 - disconnect the drbd network on the primary
4929 - create the drbd device on the new secondary
4930 - network attach the drbd on the primary, using an artifice:
4931 the drbd code for Attach() will connect to the network if it
4932 finds a device which is connected to the good local disks but
4934 - wait for sync across all devices
4935 - remove all disks from the old secondary
4937 Failures are not very well handled.
4941 warning, info = (self.proc.LogWarning, self.proc.LogInfo)
4942 instance = self.instance
4946 old_node = self.tgt_node
4947 new_node = self.new_node
4948 pri_node = instance.primary_node
4950 old_node: self.cfg.GetNodeInfo(old_node).secondary_ip,
4951 new_node: self.cfg.GetNodeInfo(new_node).secondary_ip,
4952 pri_node: self.cfg.GetNodeInfo(pri_node).secondary_ip,
4955 # Step: check device activation
4956 self.proc.LogStep(1, steps_total, "check device existence")
4957 info("checking volume groups")
4958 my_vg = cfg.GetVGName()
4959 results = self.rpc.call_vg_list([pri_node, new_node])
4960 for node in pri_node, new_node:
4962 if res.failed or not res.data or my_vg not in res.data:
4963 raise errors.OpExecError("Volume group '%s' not found on %s" %
4965 for idx, dev in enumerate(instance.disks):
4966 if idx not in self.op.disks:
4968 info("checking disk/%d on %s" % (idx, pri_node))
4969 cfg.SetDiskID(dev, pri_node)
4970 result = self.rpc.call_blockdev_find(pri_node, dev)
4973 raise errors.OpExecError("Can't find disk/%d on node %s" %
4976 # Step: check other node consistency
4977 self.proc.LogStep(2, steps_total, "check peer consistency")
4978 for idx, dev in enumerate(instance.disks):
4979 if idx not in self.op.disks:
4981 info("checking disk/%d consistency on %s" % (idx, pri_node))
4982 if not _CheckDiskConsistency(self, dev, pri_node, True, ldisk=True):
4983 raise errors.OpExecError("Primary node (%s) has degraded storage,"
4984 " unsafe to replace the secondary" %
4987 # Step: create new storage
4988 self.proc.LogStep(3, steps_total, "allocate new storage")
4989 for idx, dev in enumerate(instance.disks):
4990 info("adding new local storage on %s for disk/%d" %
4992 # since we *always* want to create this LV, we use the
4993 # _Create...OnPrimary (which forces the creation), even if we
4994 # are talking about the secondary node
4995 for new_lv in dev.children:
4996 _CreateBlockDevOnPrimary(self, new_node, instance, new_lv,
4997 _GetInstanceInfoText(instance))
4999 # Step 4: dbrd minors and drbd setups changes
5000 # after this, we must manually remove the drbd minors on both the
5001 # error and the success paths
5002 minors = cfg.AllocateDRBDMinor([new_node for dev in instance.disks],
5004 logging.debug("Allocated minors %s" % (minors,))
5005 self.proc.LogStep(4, steps_total, "changing drbd configuration")
5006 for idx, (dev, new_minor) in enumerate(zip(instance.disks, minors)):
5008 info("activating a new drbd on %s for disk/%d" % (new_node, idx))
5009 # create new devices on new_node; note that we create two IDs:
5010 # one without port, so the drbd will be activated without
5011 # networking information on the new node at this stage, and one
5012 # with network, for the latter activation in step 4
5013 (o_node1, o_node2, o_port, o_minor1, o_minor2, o_secret) = dev.logical_id
5014 if pri_node == o_node1:
5019 new_alone_id = (pri_node, new_node, None, p_minor, new_minor, o_secret)
5020 new_net_id = (pri_node, new_node, o_port, p_minor, new_minor, o_secret)
5022 iv_names[idx] = (dev, dev.children, new_net_id)
5023 logging.debug("Allocated new_minor: %s, new_logical_id: %s", new_minor,
5025 new_drbd = objects.Disk(dev_type=constants.LD_DRBD8,
5026 logical_id=new_alone_id,
5027 children=dev.children)
5029 _CreateBlockDevOnSecondary(self, new_node, instance, new_drbd, False,
5030 _GetInstanceInfoText(instance))
5031 except error.BlockDeviceError:
5032 self.cfg.ReleaseDRBDMinors(instance.name)
5035 for idx, dev in enumerate(instance.disks):
5036 # we have new devices, shutdown the drbd on the old secondary
5037 info("shutting down drbd for disk/%d on old node" % idx)
5038 cfg.SetDiskID(dev, old_node)
5039 result = self.rpc.call_blockdev_shutdown(old_node, dev)
5040 if result.failed or not result.data:
5041 warning("Failed to shutdown drbd for disk/%d on old node" % idx,
5042 hint="Please cleanup this device manually as soon as possible")
5044 info("detaching primary drbds from the network (=> standalone)")
5045 result = self.rpc.call_drbd_disconnect_net([pri_node], nodes_ip,
5046 instance.disks)[pri_node]
5048 msg = result.RemoteFailMsg()
5050 # detaches didn't succeed (unlikely)
5051 self.cfg.ReleaseDRBDMinors(instance.name)
5052 raise errors.OpExecError("Can't detach the disks from the network on"
5053 " old node: %s" % (msg,))
5055 # if we managed to detach at least one, we update all the disks of
5056 # the instance to point to the new secondary
5057 info("updating instance configuration")
5058 for dev, _, new_logical_id in iv_names.itervalues():
5059 dev.logical_id = new_logical_id
5060 cfg.SetDiskID(dev, pri_node)
5061 cfg.Update(instance)
5062 # we can remove now the temp minors as now the new values are
5063 # written to the config file (and therefore stable)
5064 self.cfg.ReleaseDRBDMinors(instance.name)
5066 # and now perform the drbd attach
5067 info("attaching primary drbds to new secondary (standalone => connected)")
5068 result = self.rpc.call_drbd_attach_net([pri_node, new_node], nodes_ip,
5069 instance.disks, instance.name,
5071 for to_node, to_result in result.items():
5072 msg = to_result.RemoteFailMsg()
5074 warning("can't attach drbd disks on node %s: %s", to_node, msg,
5075 hint="please do a gnt-instance info to see the"
5078 # this can fail as the old devices are degraded and _WaitForSync
5079 # does a combined result over all disks, so we don't check its
5081 self.proc.LogStep(5, steps_total, "sync devices")
5082 _WaitForSync(self, instance, unlock=True)
5084 # so check manually all the devices
5085 for idx, (dev, old_lvs, _) in iv_names.iteritems():
5086 cfg.SetDiskID(dev, pri_node)
5087 result = self.rpc.call_blockdev_find(pri_node, dev)
5090 raise errors.OpExecError("DRBD device disk/%d is degraded!" % idx)
5092 self.proc.LogStep(6, steps_total, "removing old storage")
5093 for idx, (dev, old_lvs, _) in iv_names.iteritems():
5094 info("remove logical volumes for disk/%d" % idx)
5096 cfg.SetDiskID(lv, old_node)
5097 result = self.rpc.call_blockdev_remove(old_node, lv)
5098 if result.failed or not result.data:
5099 warning("Can't remove LV on old secondary",
5100 hint="Cleanup stale volumes by hand")
5102 def Exec(self, feedback_fn):
5103 """Execute disk replacement.
5105 This dispatches the disk replacement to the appropriate handler.
5108 instance = self.instance
5110 # Activate the instance disks if we're replacing them on a down instance
5111 if instance.status == "down":
5112 _StartInstanceDisks(self, instance, True)
5114 if self.op.mode == constants.REPLACE_DISK_CHG:
5115 fn = self._ExecD8Secondary
5117 fn = self._ExecD8DiskOnly
5119 ret = fn(feedback_fn)
5121 # Deactivate the instance disks if we're replacing them on a down instance
5122 if instance.status == "down":
5123 _SafeShutdownInstanceDisks(self, instance)
5128 class LUGrowDisk(LogicalUnit):
5129 """Grow a disk of an instance.
5133 HTYPE = constants.HTYPE_INSTANCE
5134 _OP_REQP = ["instance_name", "disk", "amount", "wait_for_sync"]
5137 def ExpandNames(self):
5138 self._ExpandAndLockInstance()
5139 self.needed_locks[locking.LEVEL_NODE] = []
5140 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5142 def DeclareLocks(self, level):
5143 if level == locking.LEVEL_NODE:
5144 self._LockInstancesNodes()
5146 def BuildHooksEnv(self):
5149 This runs on the master, the primary and all the secondaries.
5153 "DISK": self.op.disk,
5154 "AMOUNT": self.op.amount,
5156 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
5158 self.cfg.GetMasterNode(),
5159 self.instance.primary_node,
5163 def CheckPrereq(self):
5164 """Check prerequisites.
5166 This checks that the instance is in the cluster.
5169 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5170 assert instance is not None, \
5171 "Cannot retrieve locked instance %s" % self.op.instance_name
5172 _CheckNodeOnline(self, instance.primary_node)
5173 for node in instance.secondary_nodes:
5174 _CheckNodeOnline(self, node)
5177 self.instance = instance
5179 if instance.disk_template not in (constants.DT_PLAIN, constants.DT_DRBD8):
5180 raise errors.OpPrereqError("Instance's disk layout does not support"
5183 self.disk = instance.FindDisk(self.op.disk)
5185 nodenames = [instance.primary_node] + list(instance.secondary_nodes)
5186 nodeinfo = self.rpc.call_node_info(nodenames, self.cfg.GetVGName(),
5187 instance.hypervisor)
5188 for node in nodenames:
5189 info = nodeinfo[node]
5190 if info.failed or not info.data:
5191 raise errors.OpPrereqError("Cannot get current information"
5192 " from node '%s'" % node)
5193 vg_free = info.data.get('vg_free', None)
5194 if not isinstance(vg_free, int):
5195 raise errors.OpPrereqError("Can't compute free disk space on"
5197 if self.op.amount > vg_free:
5198 raise errors.OpPrereqError("Not enough disk space on target node %s:"
5199 " %d MiB available, %d MiB required" %
5200 (node, vg_free, self.op.amount))
5202 def Exec(self, feedback_fn):
5203 """Execute disk grow.
5206 instance = self.instance
5208 for node in (instance.secondary_nodes + (instance.primary_node,)):
5209 self.cfg.SetDiskID(disk, node)
5210 result = self.rpc.call_blockdev_grow(node, disk, self.op.amount)
5212 if (not result.data or not isinstance(result.data, (list, tuple)) or
5213 len(result.data) != 2):
5214 raise errors.OpExecError("Grow request failed to node %s" % node)
5215 elif not result.data[0]:
5216 raise errors.OpExecError("Grow request failed to node %s: %s" %
5217 (node, result.data[1]))
5218 disk.RecordGrow(self.op.amount)
5219 self.cfg.Update(instance)
5220 if self.op.wait_for_sync:
5221 disk_abort = not _WaitForSync(self, instance)
5223 self.proc.LogWarning("Warning: disk sync-ing has not returned a good"
5224 " status.\nPlease check the instance.")
5227 class LUQueryInstanceData(NoHooksLU):
5228 """Query runtime instance data.
5231 _OP_REQP = ["instances", "static"]
5234 def ExpandNames(self):
5235 self.needed_locks = {}
5236 self.share_locks = dict(((i, 1) for i in locking.LEVELS))
5238 if not isinstance(self.op.instances, list):
5239 raise errors.OpPrereqError("Invalid argument type 'instances'")
5241 if self.op.instances:
5242 self.wanted_names = []
5243 for name in self.op.instances:
5244 full_name = self.cfg.ExpandInstanceName(name)
5245 if full_name is None:
5246 raise errors.OpPrereqError("Instance '%s' not known" % name)
5247 self.wanted_names.append(full_name)
5248 self.needed_locks[locking.LEVEL_INSTANCE] = self.wanted_names
5250 self.wanted_names = None
5251 self.needed_locks[locking.LEVEL_INSTANCE] = locking.ALL_SET
5253 self.needed_locks[locking.LEVEL_NODE] = []
5254 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5256 def DeclareLocks(self, level):
5257 if level == locking.LEVEL_NODE:
5258 self._LockInstancesNodes()
5260 def CheckPrereq(self):
5261 """Check prerequisites.
5263 This only checks the optional instance list against the existing names.
5266 if self.wanted_names is None:
5267 self.wanted_names = self.acquired_locks[locking.LEVEL_INSTANCE]
5269 self.wanted_instances = [self.cfg.GetInstanceInfo(name) for name
5270 in self.wanted_names]
5273 def _ComputeDiskStatus(self, instance, snode, dev):
5274 """Compute block device status.
5277 static = self.op.static
5279 self.cfg.SetDiskID(dev, instance.primary_node)
5280 dev_pstatus = self.rpc.call_blockdev_find(instance.primary_node, dev)
5282 dev_pstatus = dev_pstatus.data
5286 if dev.dev_type in constants.LDS_DRBD:
5287 # we change the snode then (otherwise we use the one passed in)
5288 if dev.logical_id[0] == instance.primary_node:
5289 snode = dev.logical_id[1]
5291 snode = dev.logical_id[0]
5293 if snode and not static:
5294 self.cfg.SetDiskID(dev, snode)
5295 dev_sstatus = self.rpc.call_blockdev_find(snode, dev)
5297 dev_sstatus = dev_sstatus.data
5302 dev_children = [self._ComputeDiskStatus(instance, snode, child)
5303 for child in dev.children]
5308 "iv_name": dev.iv_name,
5309 "dev_type": dev.dev_type,
5310 "logical_id": dev.logical_id,
5311 "physical_id": dev.physical_id,
5312 "pstatus": dev_pstatus,
5313 "sstatus": dev_sstatus,
5314 "children": dev_children,
5320 def Exec(self, feedback_fn):
5321 """Gather and return data"""
5324 cluster = self.cfg.GetClusterInfo()
5326 for instance in self.wanted_instances:
5327 if not self.op.static:
5328 remote_info = self.rpc.call_instance_info(instance.primary_node,
5330 instance.hypervisor)
5332 remote_info = remote_info.data
5333 if remote_info and "state" in remote_info:
5336 remote_state = "down"
5339 if instance.status == "down":
5340 config_state = "down"
5344 disks = [self._ComputeDiskStatus(instance, None, device)
5345 for device in instance.disks]
5348 "name": instance.name,
5349 "config_state": config_state,
5350 "run_state": remote_state,
5351 "pnode": instance.primary_node,
5352 "snodes": instance.secondary_nodes,
5354 "nics": [(nic.mac, nic.ip, nic.bridge) for nic in instance.nics],
5356 "hypervisor": instance.hypervisor,
5357 "network_port": instance.network_port,
5358 "hv_instance": instance.hvparams,
5359 "hv_actual": cluster.FillHV(instance),
5360 "be_instance": instance.beparams,
5361 "be_actual": cluster.FillBE(instance),
5364 result[instance.name] = idict
5369 class LUSetInstanceParams(LogicalUnit):
5370 """Modifies an instances's parameters.
5373 HPATH = "instance-modify"
5374 HTYPE = constants.HTYPE_INSTANCE
5375 _OP_REQP = ["instance_name"]
5378 def CheckArguments(self):
5379 if not hasattr(self.op, 'nics'):
5381 if not hasattr(self.op, 'disks'):
5383 if not hasattr(self.op, 'beparams'):
5384 self.op.beparams = {}
5385 if not hasattr(self.op, 'hvparams'):
5386 self.op.hvparams = {}
5387 self.op.force = getattr(self.op, "force", False)
5388 if not (self.op.nics or self.op.disks or
5389 self.op.hvparams or self.op.beparams):
5390 raise errors.OpPrereqError("No changes submitted")
5392 utils.CheckBEParams(self.op.beparams)
5396 for disk_op, disk_dict in self.op.disks:
5397 if disk_op == constants.DDM_REMOVE:
5400 elif disk_op == constants.DDM_ADD:
5403 if not isinstance(disk_op, int):
5404 raise errors.OpPrereqError("Invalid disk index")
5405 if disk_op == constants.DDM_ADD:
5406 mode = disk_dict.setdefault('mode', constants.DISK_RDWR)
5407 if mode not in (constants.DISK_RDONLY, constants.DISK_RDWR):
5408 raise errors.OpPrereqError("Invalid disk access mode '%s'" % mode)
5409 size = disk_dict.get('size', None)
5411 raise errors.OpPrereqError("Required disk parameter size missing")
5414 except ValueError, err:
5415 raise errors.OpPrereqError("Invalid disk size parameter: %s" %
5417 disk_dict['size'] = size
5419 # modification of disk
5420 if 'size' in disk_dict:
5421 raise errors.OpPrereqError("Disk size change not possible, use"
5424 if disk_addremove > 1:
5425 raise errors.OpPrereqError("Only one disk add or remove operation"
5426 " supported at a time")
5430 for nic_op, nic_dict in self.op.nics:
5431 if nic_op == constants.DDM_REMOVE:
5434 elif nic_op == constants.DDM_ADD:
5437 if not isinstance(nic_op, int):
5438 raise errors.OpPrereqError("Invalid nic index")
5440 # nic_dict should be a dict
5441 nic_ip = nic_dict.get('ip', None)
5442 if nic_ip is not None:
5443 if nic_ip.lower() == "none":
5444 nic_dict['ip'] = None
5446 if not utils.IsValidIP(nic_ip):
5447 raise errors.OpPrereqError("Invalid IP address '%s'" % nic_ip)
5448 # we can only check None bridges and assign the default one
5449 nic_bridge = nic_dict.get('bridge', None)
5450 if nic_bridge is None:
5451 nic_dict['bridge'] = self.cfg.GetDefBridge()
5452 # but we can validate MACs
5453 nic_mac = nic_dict.get('mac', None)
5454 if nic_mac is not None:
5455 if self.cfg.IsMacInUse(nic_mac):
5456 raise errors.OpPrereqError("MAC address %s already in use"
5457 " in cluster" % nic_mac)
5458 if nic_mac not in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
5459 if not utils.IsValidMac(nic_mac):
5460 raise errors.OpPrereqError("Invalid MAC address %s" % nic_mac)
5461 if nic_addremove > 1:
5462 raise errors.OpPrereqError("Only one NIC add or remove operation"
5463 " supported at a time")
5465 def ExpandNames(self):
5466 self._ExpandAndLockInstance()
5467 self.needed_locks[locking.LEVEL_NODE] = []
5468 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5470 def DeclareLocks(self, level):
5471 if level == locking.LEVEL_NODE:
5472 self._LockInstancesNodes()
5474 def BuildHooksEnv(self):
5477 This runs on the master, primary and secondaries.
5481 if constants.BE_MEMORY in self.be_new:
5482 args['memory'] = self.be_new[constants.BE_MEMORY]
5483 if constants.BE_VCPUS in self.be_new:
5484 args['vcpus'] = self.be_new[constants.BE_VCPUS]
5485 # FIXME: readd disk/nic changes
5486 env = _BuildInstanceHookEnvByObject(self, self.instance, override=args)
5487 nl = [self.cfg.GetMasterNode(),
5488 self.instance.primary_node] + list(self.instance.secondary_nodes)
5491 def CheckPrereq(self):
5492 """Check prerequisites.
5494 This only checks the instance list against the existing names.
5497 force = self.force = self.op.force
5499 # checking the new params on the primary/secondary nodes
5501 instance = self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5502 assert self.instance is not None, \
5503 "Cannot retrieve locked instance %s" % self.op.instance_name
5504 pnode = self.instance.primary_node
5506 nodelist.extend(instance.secondary_nodes)
5508 # hvparams processing
5509 if self.op.hvparams:
5510 i_hvdict = copy.deepcopy(instance.hvparams)
5511 for key, val in self.op.hvparams.iteritems():
5512 if val == constants.VALUE_DEFAULT:
5517 elif val == constants.VALUE_NONE:
5518 i_hvdict[key] = None
5521 cluster = self.cfg.GetClusterInfo()
5522 hv_new = cluster.FillDict(cluster.hvparams[instance.hypervisor],
5525 hypervisor.GetHypervisor(
5526 instance.hypervisor).CheckParameterSyntax(hv_new)
5527 _CheckHVParams(self, nodelist, instance.hypervisor, hv_new)
5528 self.hv_new = hv_new # the new actual values
5529 self.hv_inst = i_hvdict # the new dict (without defaults)
5531 self.hv_new = self.hv_inst = {}
5533 # beparams processing
5534 if self.op.beparams:
5535 i_bedict = copy.deepcopy(instance.beparams)
5536 for key, val in self.op.beparams.iteritems():
5537 if val == constants.VALUE_DEFAULT:
5544 cluster = self.cfg.GetClusterInfo()
5545 be_new = cluster.FillDict(cluster.beparams[constants.BEGR_DEFAULT],
5547 self.be_new = be_new # the new actual values
5548 self.be_inst = i_bedict # the new dict (without defaults)
5550 self.be_new = self.be_inst = {}
5554 if constants.BE_MEMORY in self.op.beparams and not self.force:
5555 mem_check_list = [pnode]
5556 if be_new[constants.BE_AUTO_BALANCE]:
5557 # either we changed auto_balance to yes or it was from before
5558 mem_check_list.extend(instance.secondary_nodes)
5559 instance_info = self.rpc.call_instance_info(pnode, instance.name,
5560 instance.hypervisor)
5561 nodeinfo = self.rpc.call_node_info(mem_check_list, self.cfg.GetVGName(),
5562 instance.hypervisor)
5563 if nodeinfo[pnode].failed or not isinstance(nodeinfo[pnode].data, dict):
5564 # Assume the primary node is unreachable and go ahead
5565 self.warn.append("Can't get info from primary node %s" % pnode)
5567 if not instance_info.failed and instance_info.data:
5568 current_mem = instance_info.data['memory']
5570 # Assume instance not running
5571 # (there is a slight race condition here, but it's not very probable,
5572 # and we have no other way to check)
5574 miss_mem = (be_new[constants.BE_MEMORY] - current_mem -
5575 nodeinfo[pnode].data['memory_free'])
5577 raise errors.OpPrereqError("This change will prevent the instance"
5578 " from starting, due to %d MB of memory"
5579 " missing on its primary node" % miss_mem)
5581 if be_new[constants.BE_AUTO_BALANCE]:
5582 for node, nres in nodeinfo.iteritems():
5583 if node not in instance.secondary_nodes:
5585 if nres.failed or not isinstance(nres.data, dict):
5586 self.warn.append("Can't get info from secondary node %s" % node)
5587 elif be_new[constants.BE_MEMORY] > nres.data['memory_free']:
5588 self.warn.append("Not enough memory to failover instance to"
5589 " secondary node %s" % node)
5592 for nic_op, nic_dict in self.op.nics:
5593 if nic_op == constants.DDM_REMOVE:
5594 if not instance.nics:
5595 raise errors.OpPrereqError("Instance has no NICs, cannot remove")
5597 if nic_op != constants.DDM_ADD:
5599 if nic_op < 0 or nic_op >= len(instance.nics):
5600 raise errors.OpPrereqError("Invalid NIC index %s, valid values"
5602 (nic_op, len(instance.nics)))
5603 nic_bridge = nic_dict.get('bridge', None)
5604 if nic_bridge is not None:
5605 if not self.rpc.call_bridges_exist(pnode, [nic_bridge]):
5606 msg = ("Bridge '%s' doesn't exist on one of"
5607 " the instance nodes" % nic_bridge)
5609 self.warn.append(msg)
5611 raise errors.OpPrereqError(msg)
5614 if self.op.disks and instance.disk_template == constants.DT_DISKLESS:
5615 raise errors.OpPrereqError("Disk operations not supported for"
5616 " diskless instances")
5617 for disk_op, disk_dict in self.op.disks:
5618 if disk_op == constants.DDM_REMOVE:
5619 if len(instance.disks) == 1:
5620 raise errors.OpPrereqError("Cannot remove the last disk of"
5622 ins_l = self.rpc.call_instance_list([pnode], [instance.hypervisor])
5623 ins_l = ins_l[pnode]
5624 if ins_l.failed or not isinstance(ins_l.data, list):
5625 raise errors.OpPrereqError("Can't contact node '%s'" % pnode)
5626 if instance.name in ins_l.data:
5627 raise errors.OpPrereqError("Instance is running, can't remove"
5630 if (disk_op == constants.DDM_ADD and
5631 len(instance.nics) >= constants.MAX_DISKS):
5632 raise errors.OpPrereqError("Instance has too many disks (%d), cannot"
5633 " add more" % constants.MAX_DISKS)
5634 if disk_op not in (constants.DDM_ADD, constants.DDM_REMOVE):
5636 if disk_op < 0 or disk_op >= len(instance.disks):
5637 raise errors.OpPrereqError("Invalid disk index %s, valid values"
5639 (disk_op, len(instance.disks)))
5643 def Exec(self, feedback_fn):
5644 """Modifies an instance.
5646 All parameters take effect only at the next restart of the instance.
5649 # Process here the warnings from CheckPrereq, as we don't have a
5650 # feedback_fn there.
5651 for warn in self.warn:
5652 feedback_fn("WARNING: %s" % warn)
5655 instance = self.instance
5657 for disk_op, disk_dict in self.op.disks:
5658 if disk_op == constants.DDM_REMOVE:
5659 # remove the last disk
5660 device = instance.disks.pop()
5661 device_idx = len(instance.disks)
5662 for node, disk in device.ComputeNodeTree(instance.primary_node):
5663 self.cfg.SetDiskID(disk, node)
5664 rpc_result = self.rpc.call_blockdev_remove(node, disk)
5665 if rpc_result.failed or not rpc_result.data:
5666 self.proc.LogWarning("Could not remove disk/%d on node %s,"
5667 " continuing anyway", device_idx, node)
5668 result.append(("disk/%d" % device_idx, "remove"))
5669 elif disk_op == constants.DDM_ADD:
5671 if instance.disk_template == constants.DT_FILE:
5672 file_driver, file_path = instance.disks[0].logical_id
5673 file_path = os.path.dirname(file_path)
5675 file_driver = file_path = None
5676 disk_idx_base = len(instance.disks)
5677 new_disk = _GenerateDiskTemplate(self,
5678 instance.disk_template,
5679 instance, instance.primary_node,
5680 instance.secondary_nodes,
5685 new_disk.mode = disk_dict['mode']
5686 instance.disks.append(new_disk)
5687 info = _GetInstanceInfoText(instance)
5689 logging.info("Creating volume %s for instance %s",
5690 new_disk.iv_name, instance.name)
5691 # Note: this needs to be kept in sync with _CreateDisks
5693 for secondary_node in instance.secondary_nodes:
5695 _CreateBlockDevOnSecondary(self, secondary_node, instance,
5696 new_disk, False, info)
5697 except error.OpExecError, err:
5698 self.LogWarning("Failed to create volume %s (%s) on"
5699 " secondary node %s: %s",
5700 new_disk.iv_name, new_disk, secondary_node, err)
5703 _CreateBlockDevOnPrimary(self, instance.primary_node,
5704 instance, new_disk, info)
5705 except errors.OpExecError, err:
5706 self.LogWarning("Failed to create volume %s on primary: %s",
5707 new_disk.iv_name, err)
5708 result.append(("disk/%d" % disk_idx_base, "add:size=%s,mode=%s" %
5709 (new_disk.size, new_disk.mode)))
5711 # change a given disk
5712 instance.disks[disk_op].mode = disk_dict['mode']
5713 result.append(("disk.mode/%d" % disk_op, disk_dict['mode']))
5715 for nic_op, nic_dict in self.op.nics:
5716 if nic_op == constants.DDM_REMOVE:
5717 # remove the last nic
5718 del instance.nics[-1]
5719 result.append(("nic.%d" % len(instance.nics), "remove"))
5720 elif nic_op == constants.DDM_ADD:
5722 if 'mac' not in nic_dict:
5723 mac = constants.VALUE_GENERATE
5725 mac = nic_dict['mac']
5726 if mac in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
5727 mac = self.cfg.GenerateMAC()
5728 new_nic = objects.NIC(mac=mac, ip=nic_dict.get('ip', None),
5729 bridge=nic_dict.get('bridge', None))
5730 instance.nics.append(new_nic)
5731 result.append(("nic.%d" % (len(instance.nics) - 1),
5732 "add:mac=%s,ip=%s,bridge=%s" %
5733 (new_nic.mac, new_nic.ip, new_nic.bridge)))
5735 # change a given nic
5736 for key in 'mac', 'ip', 'bridge':
5738 setattr(instance.nics[nic_op], key, nic_dict[key])
5739 result.append(("nic.%s/%d" % (key, nic_op), nic_dict[key]))
5742 if self.op.hvparams:
5743 instance.hvparams = self.hv_new
5744 for key, val in self.op.hvparams.iteritems():
5745 result.append(("hv/%s" % key, val))
5748 if self.op.beparams:
5749 instance.beparams = self.be_inst
5750 for key, val in self.op.beparams.iteritems():
5751 result.append(("be/%s" % key, val))
5753 self.cfg.Update(instance)
5758 class LUQueryExports(NoHooksLU):
5759 """Query the exports list
5762 _OP_REQP = ['nodes']
5765 def ExpandNames(self):
5766 self.needed_locks = {}
5767 self.share_locks[locking.LEVEL_NODE] = 1
5768 if not self.op.nodes:
5769 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
5771 self.needed_locks[locking.LEVEL_NODE] = \
5772 _GetWantedNodes(self, self.op.nodes)
5774 def CheckPrereq(self):
5775 """Check prerequisites.
5778 self.nodes = self.acquired_locks[locking.LEVEL_NODE]
5780 def Exec(self, feedback_fn):
5781 """Compute the list of all the exported system images.
5784 @return: a dictionary with the structure node->(export-list)
5785 where export-list is a list of the instances exported on
5789 rpcresult = self.rpc.call_export_list(self.nodes)
5791 for node in rpcresult:
5792 if rpcresult[node].failed:
5793 result[node] = False
5795 result[node] = rpcresult[node].data
5800 class LUExportInstance(LogicalUnit):
5801 """Export an instance to an image in the cluster.
5804 HPATH = "instance-export"
5805 HTYPE = constants.HTYPE_INSTANCE
5806 _OP_REQP = ["instance_name", "target_node", "shutdown"]
5809 def ExpandNames(self):
5810 self._ExpandAndLockInstance()
5811 # FIXME: lock only instance primary and destination node
5813 # Sad but true, for now we have do lock all nodes, as we don't know where
5814 # the previous export might be, and and in this LU we search for it and
5815 # remove it from its current node. In the future we could fix this by:
5816 # - making a tasklet to search (share-lock all), then create the new one,
5817 # then one to remove, after
5818 # - removing the removal operation altoghether
5819 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
5821 def DeclareLocks(self, level):
5822 """Last minute lock declaration."""
5823 # All nodes are locked anyway, so nothing to do here.
5825 def BuildHooksEnv(self):
5828 This will run on the master, primary node and target node.
5832 "EXPORT_NODE": self.op.target_node,
5833 "EXPORT_DO_SHUTDOWN": self.op.shutdown,
5835 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
5836 nl = [self.cfg.GetMasterNode(), self.instance.primary_node,
5837 self.op.target_node]
5840 def CheckPrereq(self):
5841 """Check prerequisites.
5843 This checks that the instance and node names are valid.
5846 instance_name = self.op.instance_name
5847 self.instance = self.cfg.GetInstanceInfo(instance_name)
5848 assert self.instance is not None, \
5849 "Cannot retrieve locked instance %s" % self.op.instance_name
5850 _CheckNodeOnline(self, self.instance.primary_node)
5852 self.dst_node = self.cfg.GetNodeInfo(
5853 self.cfg.ExpandNodeName(self.op.target_node))
5855 if self.dst_node is None:
5856 # This is wrong node name, not a non-locked node
5857 raise errors.OpPrereqError("Wrong node name %s" % self.op.target_node)
5858 _CheckNodeOnline(self, self.dst_node.name)
5860 # instance disk type verification
5861 for disk in self.instance.disks:
5862 if disk.dev_type == constants.LD_FILE:
5863 raise errors.OpPrereqError("Export not supported for instances with"
5864 " file-based disks")
5866 def Exec(self, feedback_fn):
5867 """Export an instance to an image in the cluster.
5870 instance = self.instance
5871 dst_node = self.dst_node
5872 src_node = instance.primary_node
5873 if self.op.shutdown:
5874 # shutdown the instance, but not the disks
5875 result = self.rpc.call_instance_shutdown(src_node, instance)
5878 raise errors.OpExecError("Could not shutdown instance %s on node %s" %
5879 (instance.name, src_node))
5881 vgname = self.cfg.GetVGName()
5885 # set the disks ID correctly since call_instance_start needs the
5886 # correct drbd minor to create the symlinks
5887 for disk in instance.disks:
5888 self.cfg.SetDiskID(disk, src_node)
5891 for disk in instance.disks:
5892 # new_dev_name will be a snapshot of an lvm leaf of the one we passed
5893 new_dev_name = self.rpc.call_blockdev_snapshot(src_node, disk)
5894 if new_dev_name.failed or not new_dev_name.data:
5895 self.LogWarning("Could not snapshot block device %s on node %s",
5896 disk.logical_id[1], src_node)
5897 snap_disks.append(False)
5899 new_dev = objects.Disk(dev_type=constants.LD_LV, size=disk.size,
5900 logical_id=(vgname, new_dev_name.data),
5901 physical_id=(vgname, new_dev_name.data),
5902 iv_name=disk.iv_name)
5903 snap_disks.append(new_dev)
5906 if self.op.shutdown and instance.status == "up":
5907 result = self.rpc.call_instance_start(src_node, instance, None)
5908 if result.failed or not result.data:
5909 _ShutdownInstanceDisks(self, instance)
5910 raise errors.OpExecError("Could not start instance")
5912 # TODO: check for size
5914 cluster_name = self.cfg.GetClusterName()
5915 for idx, dev in enumerate(snap_disks):
5917 result = self.rpc.call_snapshot_export(src_node, dev, dst_node.name,
5918 instance, cluster_name, idx)
5919 if result.failed or not result.data:
5920 self.LogWarning("Could not export block device %s from node %s to"
5921 " node %s", dev.logical_id[1], src_node,
5923 result = self.rpc.call_blockdev_remove(src_node, dev)
5924 if result.failed or not result.data:
5925 self.LogWarning("Could not remove snapshot block device %s from node"
5926 " %s", dev.logical_id[1], src_node)
5928 result = self.rpc.call_finalize_export(dst_node.name, instance, snap_disks)
5929 if result.failed or not result.data:
5930 self.LogWarning("Could not finalize export for instance %s on node %s",
5931 instance.name, dst_node.name)
5933 nodelist = self.cfg.GetNodeList()
5934 nodelist.remove(dst_node.name)
5936 # on one-node clusters nodelist will be empty after the removal
5937 # if we proceed the backup would be removed because OpQueryExports
5938 # substitutes an empty list with the full cluster node list.
5940 exportlist = self.rpc.call_export_list(nodelist)
5941 for node in exportlist:
5942 if exportlist[node].failed:
5944 if instance.name in exportlist[node].data:
5945 if not self.rpc.call_export_remove(node, instance.name):
5946 self.LogWarning("Could not remove older export for instance %s"
5947 " on node %s", instance.name, node)
5950 class LURemoveExport(NoHooksLU):
5951 """Remove exports related to the named instance.
5954 _OP_REQP = ["instance_name"]
5957 def ExpandNames(self):
5958 self.needed_locks = {}
5959 # We need all nodes to be locked in order for RemoveExport to work, but we
5960 # don't need to lock the instance itself, as nothing will happen to it (and
5961 # we can remove exports also for a removed instance)
5962 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
5964 def CheckPrereq(self):
5965 """Check prerequisites.
5969 def Exec(self, feedback_fn):
5970 """Remove any export.
5973 instance_name = self.cfg.ExpandInstanceName(self.op.instance_name)
5974 # If the instance was not found we'll try with the name that was passed in.
5975 # This will only work if it was an FQDN, though.
5977 if not instance_name:
5979 instance_name = self.op.instance_name
5981 exportlist = self.rpc.call_export_list(self.acquired_locks[
5982 locking.LEVEL_NODE])
5984 for node in exportlist:
5985 if exportlist[node].failed:
5986 self.LogWarning("Failed to query node %s, continuing" % node)
5988 if instance_name in exportlist[node].data:
5990 result = self.rpc.call_export_remove(node, instance_name)
5991 if result.failed or not result.data:
5992 logging.error("Could not remove export for instance %s"
5993 " on node %s", instance_name, node)
5995 if fqdn_warn and not found:
5996 feedback_fn("Export not found. If trying to remove an export belonging"
5997 " to a deleted instance please use its Fully Qualified"
6001 class TagsLU(NoHooksLU):
6004 This is an abstract class which is the parent of all the other tags LUs.
6008 def ExpandNames(self):
6009 self.needed_locks = {}
6010 if self.op.kind == constants.TAG_NODE:
6011 name = self.cfg.ExpandNodeName(self.op.name)
6013 raise errors.OpPrereqError("Invalid node name (%s)" %
6016 self.needed_locks[locking.LEVEL_NODE] = name
6017 elif self.op.kind == constants.TAG_INSTANCE:
6018 name = self.cfg.ExpandInstanceName(self.op.name)
6020 raise errors.OpPrereqError("Invalid instance name (%s)" %
6023 self.needed_locks[locking.LEVEL_INSTANCE] = name
6025 def CheckPrereq(self):
6026 """Check prerequisites.
6029 if self.op.kind == constants.TAG_CLUSTER:
6030 self.target = self.cfg.GetClusterInfo()
6031 elif self.op.kind == constants.TAG_NODE:
6032 self.target = self.cfg.GetNodeInfo(self.op.name)
6033 elif self.op.kind == constants.TAG_INSTANCE:
6034 self.target = self.cfg.GetInstanceInfo(self.op.name)
6036 raise errors.OpPrereqError("Wrong tag type requested (%s)" %
6040 class LUGetTags(TagsLU):
6041 """Returns the tags of a given object.
6044 _OP_REQP = ["kind", "name"]
6047 def Exec(self, feedback_fn):
6048 """Returns the tag list.
6051 return list(self.target.GetTags())
6054 class LUSearchTags(NoHooksLU):
6055 """Searches the tags for a given pattern.
6058 _OP_REQP = ["pattern"]
6061 def ExpandNames(self):
6062 self.needed_locks = {}
6064 def CheckPrereq(self):
6065 """Check prerequisites.
6067 This checks the pattern passed for validity by compiling it.
6071 self.re = re.compile(self.op.pattern)
6072 except re.error, err:
6073 raise errors.OpPrereqError("Invalid search pattern '%s': %s" %
6074 (self.op.pattern, err))
6076 def Exec(self, feedback_fn):
6077 """Returns the tag list.
6081 tgts = [("/cluster", cfg.GetClusterInfo())]
6082 ilist = cfg.GetAllInstancesInfo().values()
6083 tgts.extend([("/instances/%s" % i.name, i) for i in ilist])
6084 nlist = cfg.GetAllNodesInfo().values()
6085 tgts.extend([("/nodes/%s" % n.name, n) for n in nlist])
6087 for path, target in tgts:
6088 for tag in target.GetTags():
6089 if self.re.search(tag):
6090 results.append((path, tag))
6094 class LUAddTags(TagsLU):
6095 """Sets a tag on a given object.
6098 _OP_REQP = ["kind", "name", "tags"]
6101 def CheckPrereq(self):
6102 """Check prerequisites.
6104 This checks the type and length of the tag name and value.
6107 TagsLU.CheckPrereq(self)
6108 for tag in self.op.tags:
6109 objects.TaggableObject.ValidateTag(tag)
6111 def Exec(self, feedback_fn):
6116 for tag in self.op.tags:
6117 self.target.AddTag(tag)
6118 except errors.TagError, err:
6119 raise errors.OpExecError("Error while setting tag: %s" % str(err))
6121 self.cfg.Update(self.target)
6122 except errors.ConfigurationError:
6123 raise errors.OpRetryError("There has been a modification to the"
6124 " config file and the operation has been"
6125 " aborted. Please retry.")
6128 class LUDelTags(TagsLU):
6129 """Delete a list of tags from a given object.
6132 _OP_REQP = ["kind", "name", "tags"]
6135 def CheckPrereq(self):
6136 """Check prerequisites.
6138 This checks that we have the given tag.
6141 TagsLU.CheckPrereq(self)
6142 for tag in self.op.tags:
6143 objects.TaggableObject.ValidateTag(tag)
6144 del_tags = frozenset(self.op.tags)
6145 cur_tags = self.target.GetTags()
6146 if not del_tags <= cur_tags:
6147 diff_tags = del_tags - cur_tags
6148 diff_names = ["'%s'" % tag for tag in diff_tags]
6150 raise errors.OpPrereqError("Tag(s) %s not found" %
6151 (",".join(diff_names)))
6153 def Exec(self, feedback_fn):
6154 """Remove the tag from the object.
6157 for tag in self.op.tags:
6158 self.target.RemoveTag(tag)
6160 self.cfg.Update(self.target)
6161 except errors.ConfigurationError:
6162 raise errors.OpRetryError("There has been a modification to the"
6163 " config file and the operation has been"
6164 " aborted. Please retry.")
6167 class LUTestDelay(NoHooksLU):
6168 """Sleep for a specified amount of time.
6170 This LU sleeps on the master and/or nodes for a specified amount of
6174 _OP_REQP = ["duration", "on_master", "on_nodes"]
6177 def ExpandNames(self):
6178 """Expand names and set required locks.
6180 This expands the node list, if any.
6183 self.needed_locks = {}
6184 if self.op.on_nodes:
6185 # _GetWantedNodes can be used here, but is not always appropriate to use
6186 # this way in ExpandNames. Check LogicalUnit.ExpandNames docstring for
6188 self.op.on_nodes = _GetWantedNodes(self, self.op.on_nodes)
6189 self.needed_locks[locking.LEVEL_NODE] = self.op.on_nodes
6191 def CheckPrereq(self):
6192 """Check prerequisites.
6196 def Exec(self, feedback_fn):
6197 """Do the actual sleep.
6200 if self.op.on_master:
6201 if not utils.TestDelay(self.op.duration):
6202 raise errors.OpExecError("Error during master delay test")
6203 if self.op.on_nodes:
6204 result = self.rpc.call_test_delay(self.op.on_nodes, self.op.duration)
6206 raise errors.OpExecError("Complete failure from rpc call")
6207 for node, node_result in result.items():
6209 if not node_result.data:
6210 raise errors.OpExecError("Failure during rpc call to node %s,"
6211 " result: %s" % (node, node_result.data))
6214 class IAllocator(object):
6215 """IAllocator framework.
6217 An IAllocator instance has three sets of attributes:
6218 - cfg that is needed to query the cluster
6219 - input data (all members of the _KEYS class attribute are required)
6220 - four buffer attributes (in|out_data|text), that represent the
6221 input (to the external script) in text and data structure format,
6222 and the output from it, again in two formats
6223 - the result variables from the script (success, info, nodes) for
6228 "mem_size", "disks", "disk_template",
6229 "os", "tags", "nics", "vcpus", "hypervisor",
6235 def __init__(self, lu, mode, name, **kwargs):
6237 # init buffer variables
6238 self.in_text = self.out_text = self.in_data = self.out_data = None
6239 # init all input fields so that pylint is happy
6242 self.mem_size = self.disks = self.disk_template = None
6243 self.os = self.tags = self.nics = self.vcpus = None
6244 self.hypervisor = None
6245 self.relocate_from = None
6247 self.required_nodes = None
6248 # init result fields
6249 self.success = self.info = self.nodes = None
6250 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
6251 keyset = self._ALLO_KEYS
6252 elif self.mode == constants.IALLOCATOR_MODE_RELOC:
6253 keyset = self._RELO_KEYS
6255 raise errors.ProgrammerError("Unknown mode '%s' passed to the"
6256 " IAllocator" % self.mode)
6258 if key not in keyset:
6259 raise errors.ProgrammerError("Invalid input parameter '%s' to"
6260 " IAllocator" % key)
6261 setattr(self, key, kwargs[key])
6263 if key not in kwargs:
6264 raise errors.ProgrammerError("Missing input parameter '%s' to"
6265 " IAllocator" % key)
6266 self._BuildInputData()
6268 def _ComputeClusterData(self):
6269 """Compute the generic allocator input data.
6271 This is the data that is independent of the actual operation.
6275 cluster_info = cfg.GetClusterInfo()
6279 "cluster_name": cfg.GetClusterName(),
6280 "cluster_tags": list(cluster_info.GetTags()),
6281 "enable_hypervisors": list(cluster_info.enabled_hypervisors),
6282 # we don't have job IDs
6284 iinfo = cfg.GetAllInstancesInfo().values()
6285 i_list = [(inst, cluster_info.FillBE(inst)) for inst in iinfo]
6289 node_list = cfg.GetNodeList()
6291 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
6292 hypervisor_name = self.hypervisor
6293 elif self.mode == constants.IALLOCATOR_MODE_RELOC:
6294 hypervisor_name = cfg.GetInstanceInfo(self.name).hypervisor
6296 node_data = self.lu.rpc.call_node_info(node_list, cfg.GetVGName(),
6298 node_iinfo = self.lu.rpc.call_all_instances_info(node_list,
6299 cluster_info.enabled_hypervisors)
6300 for nname in node_list:
6301 ninfo = cfg.GetNodeInfo(nname)
6302 node_data[nname].Raise()
6303 if not isinstance(node_data[nname].data, dict):
6304 raise errors.OpExecError("Can't get data for node %s" % nname)
6305 remote_info = node_data[nname].data
6306 for attr in ['memory_total', 'memory_free', 'memory_dom0',
6307 'vg_size', 'vg_free', 'cpu_total']:
6308 if attr not in remote_info:
6309 raise errors.OpExecError("Node '%s' didn't return attribute '%s'" %
6312 remote_info[attr] = int(remote_info[attr])
6313 except ValueError, err:
6314 raise errors.OpExecError("Node '%s' returned invalid value for '%s':"
6315 " %s" % (nname, attr, str(err)))
6316 # compute memory used by primary instances
6317 i_p_mem = i_p_up_mem = 0
6318 for iinfo, beinfo in i_list:
6319 if iinfo.primary_node == nname:
6320 i_p_mem += beinfo[constants.BE_MEMORY]
6321 if iinfo.name not in node_iinfo[nname]:
6324 i_used_mem = int(node_iinfo[nname][iinfo.name]['memory'])
6325 i_mem_diff = beinfo[constants.BE_MEMORY] - i_used_mem
6326 remote_info['memory_free'] -= max(0, i_mem_diff)
6328 if iinfo.status == "up":
6329 i_p_up_mem += beinfo[constants.BE_MEMORY]
6331 # compute memory used by instances
6333 "tags": list(ninfo.GetTags()),
6334 "total_memory": remote_info['memory_total'],
6335 "reserved_memory": remote_info['memory_dom0'],
6336 "free_memory": remote_info['memory_free'],
6337 "i_pri_memory": i_p_mem,
6338 "i_pri_up_memory": i_p_up_mem,
6339 "total_disk": remote_info['vg_size'],
6340 "free_disk": remote_info['vg_free'],
6341 "primary_ip": ninfo.primary_ip,
6342 "secondary_ip": ninfo.secondary_ip,
6343 "total_cpus": remote_info['cpu_total'],
6344 "offline": ninfo.offline,
6346 node_results[nname] = pnr
6347 data["nodes"] = node_results
6351 for iinfo, beinfo in i_list:
6352 nic_data = [{"mac": n.mac, "ip": n.ip, "bridge": n.bridge}
6353 for n in iinfo.nics]
6355 "tags": list(iinfo.GetTags()),
6356 "should_run": iinfo.status == "up",
6357 "vcpus": beinfo[constants.BE_VCPUS],
6358 "memory": beinfo[constants.BE_MEMORY],
6360 "nodes": [iinfo.primary_node] + list(iinfo.secondary_nodes),
6362 "disks": [{"size": dsk.size, "mode": "w"} for dsk in iinfo.disks],
6363 "disk_template": iinfo.disk_template,
6364 "hypervisor": iinfo.hypervisor,
6366 instance_data[iinfo.name] = pir
6368 data["instances"] = instance_data
6372 def _AddNewInstance(self):
6373 """Add new instance data to allocator structure.
6375 This in combination with _AllocatorGetClusterData will create the
6376 correct structure needed as input for the allocator.
6378 The checks for the completeness of the opcode must have already been
6383 if len(self.disks) != 2:
6384 raise errors.OpExecError("Only two-disk configurations supported")
6386 disk_space = _ComputeDiskSize(self.disk_template, self.disks)
6388 if self.disk_template in constants.DTS_NET_MIRROR:
6389 self.required_nodes = 2
6391 self.required_nodes = 1
6395 "disk_template": self.disk_template,
6398 "vcpus": self.vcpus,
6399 "memory": self.mem_size,
6400 "disks": self.disks,
6401 "disk_space_total": disk_space,
6403 "required_nodes": self.required_nodes,
6405 data["request"] = request
6407 def _AddRelocateInstance(self):
6408 """Add relocate instance data to allocator structure.
6410 This in combination with _IAllocatorGetClusterData will create the
6411 correct structure needed as input for the allocator.
6413 The checks for the completeness of the opcode must have already been
6417 instance = self.lu.cfg.GetInstanceInfo(self.name)
6418 if instance is None:
6419 raise errors.ProgrammerError("Unknown instance '%s' passed to"
6420 " IAllocator" % self.name)
6422 if instance.disk_template not in constants.DTS_NET_MIRROR:
6423 raise errors.OpPrereqError("Can't relocate non-mirrored instances")
6425 if len(instance.secondary_nodes) != 1:
6426 raise errors.OpPrereqError("Instance has not exactly one secondary node")
6428 self.required_nodes = 1
6429 disk_sizes = [{'size': disk.size} for disk in instance.disks]
6430 disk_space = _ComputeDiskSize(instance.disk_template, disk_sizes)
6435 "disk_space_total": disk_space,
6436 "required_nodes": self.required_nodes,
6437 "relocate_from": self.relocate_from,
6439 self.in_data["request"] = request
6441 def _BuildInputData(self):
6442 """Build input data structures.
6445 self._ComputeClusterData()
6447 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
6448 self._AddNewInstance()
6450 self._AddRelocateInstance()
6452 self.in_text = serializer.Dump(self.in_data)
6454 def Run(self, name, validate=True, call_fn=None):
6455 """Run an instance allocator and return the results.
6459 call_fn = self.lu.rpc.call_iallocator_runner
6462 result = call_fn(self.lu.cfg.GetMasterNode(), name, self.in_text)
6465 if not isinstance(result.data, (list, tuple)) or len(result.data) != 4:
6466 raise errors.OpExecError("Invalid result from master iallocator runner")
6468 rcode, stdout, stderr, fail = result.data
6470 if rcode == constants.IARUN_NOTFOUND:
6471 raise errors.OpExecError("Can't find allocator '%s'" % name)
6472 elif rcode == constants.IARUN_FAILURE:
6473 raise errors.OpExecError("Instance allocator call failed: %s,"
6474 " output: %s" % (fail, stdout+stderr))
6475 self.out_text = stdout
6477 self._ValidateResult()
6479 def _ValidateResult(self):
6480 """Process the allocator results.
6482 This will process and if successful save the result in
6483 self.out_data and the other parameters.
6487 rdict = serializer.Load(self.out_text)
6488 except Exception, err:
6489 raise errors.OpExecError("Can't parse iallocator results: %s" % str(err))
6491 if not isinstance(rdict, dict):
6492 raise errors.OpExecError("Can't parse iallocator results: not a dict")
6494 for key in "success", "info", "nodes":
6495 if key not in rdict:
6496 raise errors.OpExecError("Can't parse iallocator results:"
6497 " missing key '%s'" % key)
6498 setattr(self, key, rdict[key])
6500 if not isinstance(rdict["nodes"], list):
6501 raise errors.OpExecError("Can't parse iallocator results: 'nodes' key"
6503 self.out_data = rdict
6506 class LUTestAllocator(NoHooksLU):
6507 """Run allocator tests.
6509 This LU runs the allocator tests
6512 _OP_REQP = ["direction", "mode", "name"]
6514 def CheckPrereq(self):
6515 """Check prerequisites.
6517 This checks the opcode parameters depending on the director and mode test.
6520 if self.op.mode == constants.IALLOCATOR_MODE_ALLOC:
6521 for attr in ["name", "mem_size", "disks", "disk_template",
6522 "os", "tags", "nics", "vcpus"]:
6523 if not hasattr(self.op, attr):
6524 raise errors.OpPrereqError("Missing attribute '%s' on opcode input" %
6526 iname = self.cfg.ExpandInstanceName(self.op.name)
6527 if iname is not None:
6528 raise errors.OpPrereqError("Instance '%s' already in the cluster" %
6530 if not isinstance(self.op.nics, list):
6531 raise errors.OpPrereqError("Invalid parameter 'nics'")
6532 for row in self.op.nics:
6533 if (not isinstance(row, dict) or
6536 "bridge" not in row):
6537 raise errors.OpPrereqError("Invalid contents of the"
6538 " 'nics' parameter")
6539 if not isinstance(self.op.disks, list):
6540 raise errors.OpPrereqError("Invalid parameter 'disks'")
6541 if len(self.op.disks) != 2:
6542 raise errors.OpPrereqError("Only two-disk configurations supported")
6543 for row in self.op.disks:
6544 if (not isinstance(row, dict) or
6545 "size" not in row or
6546 not isinstance(row["size"], int) or
6547 "mode" not in row or
6548 row["mode"] not in ['r', 'w']):
6549 raise errors.OpPrereqError("Invalid contents of the"
6550 " 'disks' parameter")
6551 if self.op.hypervisor is None:
6552 self.op.hypervisor = self.cfg.GetHypervisorType()
6553 elif self.op.mode == constants.IALLOCATOR_MODE_RELOC:
6554 if not hasattr(self.op, "name"):
6555 raise errors.OpPrereqError("Missing attribute 'name' on opcode input")
6556 fname = self.cfg.ExpandInstanceName(self.op.name)
6558 raise errors.OpPrereqError("Instance '%s' not found for relocation" %
6560 self.op.name = fname
6561 self.relocate_from = self.cfg.GetInstanceInfo(fname).secondary_nodes
6563 raise errors.OpPrereqError("Invalid test allocator mode '%s'" %
6566 if self.op.direction == constants.IALLOCATOR_DIR_OUT:
6567 if not hasattr(self.op, "allocator") or self.op.allocator is None:
6568 raise errors.OpPrereqError("Missing allocator name")
6569 elif self.op.direction != constants.IALLOCATOR_DIR_IN:
6570 raise errors.OpPrereqError("Wrong allocator test '%s'" %
6573 def Exec(self, feedback_fn):
6574 """Run the allocator test.
6577 if self.op.mode == constants.IALLOCATOR_MODE_ALLOC:
6578 ial = IAllocator(self,
6581 mem_size=self.op.mem_size,
6582 disks=self.op.disks,
6583 disk_template=self.op.disk_template,
6587 vcpus=self.op.vcpus,
6588 hypervisor=self.op.hypervisor,
6591 ial = IAllocator(self,
6594 relocate_from=list(self.relocate_from),
6597 if self.op.direction == constants.IALLOCATOR_DIR_IN:
6598 result = ial.in_text
6600 ial.Run(self.op.allocator, validate=False)
6601 result = ial.out_text