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
34 from ganeti import ssh
35 from ganeti import utils
36 from ganeti import errors
37 from ganeti import hypervisor
38 from ganeti import locking
39 from ganeti import constants
40 from ganeti import objects
41 from ganeti import serializer
42 from ganeti import ssconf
45 class LogicalUnit(object):
46 """Logical Unit base class.
48 Subclasses must follow these rules:
49 - implement ExpandNames
50 - implement CheckPrereq
52 - implement BuildHooksEnv
53 - redefine HPATH and HTYPE
54 - optionally redefine their run requirements:
55 REQ_BGL: the LU needs to hold the Big Ganeti Lock exclusively
57 Note that all commands require root permissions.
59 @ivar dry_run_result: the value (if any) that will be returned to the caller
60 in dry-run mode (signalled by opcode dry_run parameter)
68 def __init__(self, processor, op, context, rpc):
69 """Constructor for LogicalUnit.
71 This needs to be overriden in derived classes in order to check op
77 self.cfg = context.cfg
78 self.context = context
80 # Dicts used to declare locking needs to mcpu
81 self.needed_locks = None
82 self.acquired_locks = {}
83 self.share_locks = dict(((i, 0) for i in locking.LEVELS))
85 self.remove_locks = {}
86 # Used to force good behavior when calling helper functions
87 self.recalculate_locks = {}
90 self.LogWarning = processor.LogWarning
91 self.LogInfo = processor.LogInfo
93 self.dry_run_result = None
95 for attr_name in self._OP_REQP:
96 attr_val = getattr(op, attr_name, None)
98 raise errors.OpPrereqError("Required parameter '%s' missing" %
100 self.CheckArguments()
103 """Returns the SshRunner object
107 self.__ssh = ssh.SshRunner(self.cfg.GetClusterName())
110 ssh = property(fget=__GetSSH)
112 def CheckArguments(self):
113 """Check syntactic validity for the opcode arguments.
115 This method is for doing a simple syntactic check and ensure
116 validity of opcode parameters, without any cluster-related
117 checks. While the same can be accomplished in ExpandNames and/or
118 CheckPrereq, doing these separate is better because:
120 - ExpandNames is left as as purely a lock-related function
121 - CheckPrereq is run after we have aquired locks (and possible
124 The function is allowed to change the self.op attribute so that
125 later methods can no longer worry about missing parameters.
130 def ExpandNames(self):
131 """Expand names for this LU.
133 This method is called before starting to execute the opcode, and it should
134 update all the parameters of the opcode to their canonical form (e.g. a
135 short node name must be fully expanded after this method has successfully
136 completed). This way locking, hooks, logging, ecc. can work correctly.
138 LUs which implement this method must also populate the self.needed_locks
139 member, as a dict with lock levels as keys, and a list of needed lock names
142 - use an empty dict if you don't need any lock
143 - if you don't need any lock at a particular level omit that level
144 - don't put anything for the BGL level
145 - if you want all locks at a level use locking.ALL_SET as a value
147 If you need to share locks (rather than acquire them exclusively) at one
148 level you can modify self.share_locks, setting a true value (usually 1) for
149 that level. By default locks are not shared.
153 # Acquire all nodes and one instance
154 self.needed_locks = {
155 locking.LEVEL_NODE: locking.ALL_SET,
156 locking.LEVEL_INSTANCE: ['instance1.example.tld'],
158 # Acquire just two nodes
159 self.needed_locks = {
160 locking.LEVEL_NODE: ['node1.example.tld', 'node2.example.tld'],
163 self.needed_locks = {} # No, you can't leave it to the default value None
166 # The implementation of this method is mandatory only if the new LU is
167 # concurrent, so that old LUs don't need to be changed all at the same
170 self.needed_locks = {} # Exclusive LUs don't need locks.
172 raise NotImplementedError
174 def DeclareLocks(self, level):
175 """Declare LU locking needs for a level
177 While most LUs can just declare their locking needs at ExpandNames time,
178 sometimes there's the need to calculate some locks after having acquired
179 the ones before. This function is called just before acquiring locks at a
180 particular level, but after acquiring the ones at lower levels, and permits
181 such calculations. It can be used to modify self.needed_locks, and by
182 default it does nothing.
184 This function is only called if you have something already set in
185 self.needed_locks for the level.
187 @param level: Locking level which is going to be locked
188 @type level: member of ganeti.locking.LEVELS
192 def CheckPrereq(self):
193 """Check prerequisites for this LU.
195 This method should check that the prerequisites for the execution
196 of this LU are fulfilled. It can do internode communication, but
197 it should be idempotent - no cluster or system changes are
200 The method should raise errors.OpPrereqError in case something is
201 not fulfilled. Its return value is ignored.
203 This method should also update all the parameters of the opcode to
204 their canonical form if it hasn't been done by ExpandNames before.
207 raise NotImplementedError
209 def Exec(self, feedback_fn):
212 This method should implement the actual work. It should raise
213 errors.OpExecError for failures that are somewhat dealt with in
217 raise NotImplementedError
219 def BuildHooksEnv(self):
220 """Build hooks environment for this LU.
222 This method should return a three-node tuple consisting of: a dict
223 containing the environment that will be used for running the
224 specific hook for this LU, a list of node names on which the hook
225 should run before the execution, and a list of node names on which
226 the hook should run after the execution.
228 The keys of the dict must not have 'GANETI_' prefixed as this will
229 be handled in the hooks runner. Also note additional keys will be
230 added by the hooks runner. If the LU doesn't define any
231 environment, an empty dict (and not None) should be returned.
233 No nodes should be returned as an empty list (and not None).
235 Note that if the HPATH for a LU class is None, this function will
239 raise NotImplementedError
241 def HooksCallBack(self, phase, hook_results, feedback_fn, lu_result):
242 """Notify the LU about the results of its hooks.
244 This method is called every time a hooks phase is executed, and notifies
245 the Logical Unit about the hooks' result. The LU can then use it to alter
246 its result based on the hooks. By default the method does nothing and the
247 previous result is passed back unchanged but any LU can define it if it
248 wants to use the local cluster hook-scripts somehow.
250 @param phase: one of L{constants.HOOKS_PHASE_POST} or
251 L{constants.HOOKS_PHASE_PRE}; it denotes the hooks phase
252 @param hook_results: the results of the multi-node hooks rpc call
253 @param feedback_fn: function used send feedback back to the caller
254 @param lu_result: the previous Exec result this LU had, or None
256 @return: the new Exec result, based on the previous result
262 def _ExpandAndLockInstance(self):
263 """Helper function to expand and lock an instance.
265 Many LUs that work on an instance take its name in self.op.instance_name
266 and need to expand it and then declare the expanded name for locking. This
267 function does it, and then updates self.op.instance_name to the expanded
268 name. It also initializes needed_locks as a dict, if this hasn't been done
272 if self.needed_locks is None:
273 self.needed_locks = {}
275 assert locking.LEVEL_INSTANCE not in self.needed_locks, \
276 "_ExpandAndLockInstance called with instance-level locks set"
277 expanded_name = self.cfg.ExpandInstanceName(self.op.instance_name)
278 if expanded_name is None:
279 raise errors.OpPrereqError("Instance '%s' not known" %
280 self.op.instance_name)
281 self.needed_locks[locking.LEVEL_INSTANCE] = expanded_name
282 self.op.instance_name = expanded_name
284 def _LockInstancesNodes(self, primary_only=False):
285 """Helper function to declare instances' nodes for locking.
287 This function should be called after locking one or more instances to lock
288 their nodes. Its effect is populating self.needed_locks[locking.LEVEL_NODE]
289 with all primary or secondary nodes for instances already locked and
290 present in self.needed_locks[locking.LEVEL_INSTANCE].
292 It should be called from DeclareLocks, and for safety only works if
293 self.recalculate_locks[locking.LEVEL_NODE] is set.
295 In the future it may grow parameters to just lock some instance's nodes, or
296 to just lock primaries or secondary nodes, if needed.
298 If should be called in DeclareLocks in a way similar to::
300 if level == locking.LEVEL_NODE:
301 self._LockInstancesNodes()
303 @type primary_only: boolean
304 @param primary_only: only lock primary nodes of locked instances
307 assert locking.LEVEL_NODE in self.recalculate_locks, \
308 "_LockInstancesNodes helper function called with no nodes to recalculate"
310 # TODO: check if we're really been called with the instance locks held
312 # For now we'll replace self.needed_locks[locking.LEVEL_NODE], but in the
313 # future we might want to have different behaviors depending on the value
314 # of self.recalculate_locks[locking.LEVEL_NODE]
316 for instance_name in self.acquired_locks[locking.LEVEL_INSTANCE]:
317 instance = self.context.cfg.GetInstanceInfo(instance_name)
318 wanted_nodes.append(instance.primary_node)
320 wanted_nodes.extend(instance.secondary_nodes)
322 if self.recalculate_locks[locking.LEVEL_NODE] == constants.LOCKS_REPLACE:
323 self.needed_locks[locking.LEVEL_NODE] = wanted_nodes
324 elif self.recalculate_locks[locking.LEVEL_NODE] == constants.LOCKS_APPEND:
325 self.needed_locks[locking.LEVEL_NODE].extend(wanted_nodes)
327 del self.recalculate_locks[locking.LEVEL_NODE]
330 class NoHooksLU(LogicalUnit):
331 """Simple LU which runs no hooks.
333 This LU is intended as a parent for other LogicalUnits which will
334 run no hooks, in order to reduce duplicate code.
341 def _GetWantedNodes(lu, nodes):
342 """Returns list of checked and expanded node names.
344 @type lu: L{LogicalUnit}
345 @param lu: the logical unit on whose behalf we execute
347 @param nodes: list of node names or None for all nodes
349 @return: the list of nodes, sorted
350 @raise errors.OpProgrammerError: if the nodes parameter is wrong type
353 if not isinstance(nodes, list):
354 raise errors.OpPrereqError("Invalid argument type 'nodes'")
357 raise errors.ProgrammerError("_GetWantedNodes should only be called with a"
358 " non-empty list of nodes whose name is to be expanded.")
362 node = lu.cfg.ExpandNodeName(name)
364 raise errors.OpPrereqError("No such node name '%s'" % name)
367 return utils.NiceSort(wanted)
370 def _GetWantedInstances(lu, instances):
371 """Returns list of checked and expanded instance names.
373 @type lu: L{LogicalUnit}
374 @param lu: the logical unit on whose behalf we execute
375 @type instances: list
376 @param instances: list of instance names or None for all instances
378 @return: the list of instances, sorted
379 @raise errors.OpPrereqError: if the instances parameter is wrong type
380 @raise errors.OpPrereqError: if any of the passed instances is not found
383 if not isinstance(instances, list):
384 raise errors.OpPrereqError("Invalid argument type 'instances'")
389 for name in instances:
390 instance = lu.cfg.ExpandInstanceName(name)
392 raise errors.OpPrereqError("No such instance name '%s'" % name)
393 wanted.append(instance)
396 wanted = utils.NiceSort(lu.cfg.GetInstanceList())
400 def _CheckOutputFields(static, dynamic, selected):
401 """Checks whether all selected fields are valid.
403 @type static: L{utils.FieldSet}
404 @param static: static fields set
405 @type dynamic: L{utils.FieldSet}
406 @param dynamic: dynamic fields set
413 delta = f.NonMatching(selected)
415 raise errors.OpPrereqError("Unknown output fields selected: %s"
419 def _CheckBooleanOpField(op, name):
420 """Validates boolean opcode parameters.
422 This will ensure that an opcode parameter is either a boolean value,
423 or None (but that it always exists).
426 val = getattr(op, name, None)
427 if not (val is None or isinstance(val, bool)):
428 raise errors.OpPrereqError("Invalid boolean parameter '%s' (%s)" %
430 setattr(op, name, val)
433 def _CheckNodeOnline(lu, node):
434 """Ensure that a given node is online.
436 @param lu: the LU on behalf of which we make the check
437 @param node: the node to check
438 @raise errors.OpPrereqError: if the node is offline
441 if lu.cfg.GetNodeInfo(node).offline:
442 raise errors.OpPrereqError("Can't use offline node %s" % node)
445 def _CheckNodeNotDrained(lu, node):
446 """Ensure that a given node is not drained.
448 @param lu: the LU on behalf of which we make the check
449 @param node: the node to check
450 @raise errors.OpPrereqError: if the node is drained
453 if lu.cfg.GetNodeInfo(node).drained:
454 raise errors.OpPrereqError("Can't use drained node %s" % node)
457 def _BuildInstanceHookEnv(name, primary_node, secondary_nodes, os_type, status,
458 memory, vcpus, nics, disk_template, disks,
459 bep, hvp, hypervisor):
460 """Builds instance related env variables for hooks
462 This builds the hook environment from individual variables.
465 @param name: the name of the instance
466 @type primary_node: string
467 @param primary_node: the name of the instance's primary node
468 @type secondary_nodes: list
469 @param secondary_nodes: list of secondary nodes as strings
470 @type os_type: string
471 @param os_type: the name of the instance's OS
472 @type status: boolean
473 @param status: the should_run status of the instance
475 @param memory: the memory size of the instance
477 @param vcpus: the count of VCPUs the instance has
479 @param nics: list of tuples (ip, mac, mode, link) representing
480 the NICs the instance has
481 @type disk_template: string
482 @param disk_template: the distk template of the instance
484 @param disks: the list of (size, mode) pairs
486 @param bep: the backend parameters for the instance
488 @param hvp: the hypervisor parameters for the instance
489 @type hypervisor: string
490 @param hypervisor: the hypervisor for the instance
492 @return: the hook environment for this instance
501 "INSTANCE_NAME": name,
502 "INSTANCE_PRIMARY": primary_node,
503 "INSTANCE_SECONDARIES": " ".join(secondary_nodes),
504 "INSTANCE_OS_TYPE": os_type,
505 "INSTANCE_STATUS": str_status,
506 "INSTANCE_MEMORY": memory,
507 "INSTANCE_VCPUS": vcpus,
508 "INSTANCE_DISK_TEMPLATE": disk_template,
509 "INSTANCE_HYPERVISOR": hypervisor,
513 nic_count = len(nics)
514 for idx, (ip, mac, mode, link) in enumerate(nics):
517 env["INSTANCE_NIC%d_IP" % idx] = ip
518 env["INSTANCE_NIC%d_MAC" % idx] = mac
519 env["INSTANCE_NIC%d_MODE" % idx] = mode
520 env["INSTANCE_NIC%d_LINK" % idx] = link
521 if mode == constants.NIC_MODE_BRIDGED:
522 env["INSTANCE_NIC%d_BRIDGE" % idx] = link
526 env["INSTANCE_NIC_COUNT"] = nic_count
529 disk_count = len(disks)
530 for idx, (size, mode) in enumerate(disks):
531 env["INSTANCE_DISK%d_SIZE" % idx] = size
532 env["INSTANCE_DISK%d_MODE" % idx] = mode
536 env["INSTANCE_DISK_COUNT"] = disk_count
538 for source, kind in [(bep, "BE"), (hvp, "HV")]:
539 for key, value in source.items():
540 env["INSTANCE_%s_%s" % (kind, key)] = value
544 def _NICListToTuple(lu, nics):
545 """Build a list of nic information tuples.
547 This list is suitable to be passed to _BuildInstanceHookEnv or as a return
548 value in LUQueryInstanceData.
550 @type lu: L{LogicalUnit}
551 @param lu: the logical unit on whose behalf we execute
552 @type nics: list of L{objects.NIC}
553 @param nics: list of nics to convert to hooks tuples
557 c_nicparams = lu.cfg.GetClusterInfo().nicparams[constants.PP_DEFAULT]
561 filled_params = objects.FillDict(c_nicparams, nic.nicparams)
562 mode = filled_params[constants.NIC_MODE]
563 link = filled_params[constants.NIC_LINK]
564 hooks_nics.append((ip, mac, mode, link))
567 def _BuildInstanceHookEnvByObject(lu, instance, override=None):
568 """Builds instance related env variables for hooks from an object.
570 @type lu: L{LogicalUnit}
571 @param lu: the logical unit on whose behalf we execute
572 @type instance: L{objects.Instance}
573 @param instance: the instance for which we should build the
576 @param override: dictionary with key/values that will override
579 @return: the hook environment dictionary
582 cluster = lu.cfg.GetClusterInfo()
583 bep = cluster.FillBE(instance)
584 hvp = cluster.FillHV(instance)
586 'name': instance.name,
587 'primary_node': instance.primary_node,
588 'secondary_nodes': instance.secondary_nodes,
589 'os_type': instance.os,
590 'status': instance.admin_up,
591 'memory': bep[constants.BE_MEMORY],
592 'vcpus': bep[constants.BE_VCPUS],
593 'nics': _NICListToTuple(lu, instance.nics),
594 'disk_template': instance.disk_template,
595 'disks': [(disk.size, disk.mode) for disk in instance.disks],
598 'hypervisor': instance.hypervisor,
601 args.update(override)
602 return _BuildInstanceHookEnv(**args)
605 def _AdjustCandidatePool(lu):
606 """Adjust the candidate pool after node operations.
609 mod_list = lu.cfg.MaintainCandidatePool()
611 lu.LogInfo("Promoted nodes to master candidate role: %s",
612 ", ".join(node.name for node in mod_list))
613 for name in mod_list:
614 lu.context.ReaddNode(name)
615 mc_now, mc_max = lu.cfg.GetMasterCandidateStats()
617 lu.LogInfo("Note: more nodes are candidates (%d) than desired (%d)" %
621 def _CheckNicsBridgesExist(lu, target_nics, target_node,
622 profile=constants.PP_DEFAULT):
623 """Check that the brigdes needed by a list of nics exist.
626 c_nicparams = lu.cfg.GetClusterInfo().nicparams[profile]
627 paramslist = [objects.FillDict(c_nicparams, nic.nicparams)
628 for nic in target_nics]
629 brlist = [params[constants.NIC_LINK] for params in paramslist
630 if params[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED]
632 result = lu.rpc.call_bridges_exist(target_node, brlist)
633 result.Raise("Error checking bridges on destination node '%s'" %
634 target_node, prereq=True)
637 def _CheckInstanceBridgesExist(lu, instance, node=None):
638 """Check that the brigdes needed by an instance exist.
642 node = instance.primary_node
643 _CheckNicsBridgesExist(lu, instance.nics, node)
646 class LUDestroyCluster(NoHooksLU):
647 """Logical unit for destroying the cluster.
652 def CheckPrereq(self):
653 """Check prerequisites.
655 This checks whether the cluster is empty.
657 Any errors are signalled by raising errors.OpPrereqError.
660 master = self.cfg.GetMasterNode()
662 nodelist = self.cfg.GetNodeList()
663 if len(nodelist) != 1 or nodelist[0] != master:
664 raise errors.OpPrereqError("There are still %d node(s) in"
665 " this cluster." % (len(nodelist) - 1))
666 instancelist = self.cfg.GetInstanceList()
668 raise errors.OpPrereqError("There are still %d instance(s) in"
669 " this cluster." % len(instancelist))
671 def Exec(self, feedback_fn):
672 """Destroys the cluster.
675 master = self.cfg.GetMasterNode()
676 result = self.rpc.call_node_stop_master(master, False)
677 result.Raise("Could not disable the master role")
678 priv_key, pub_key, _ = ssh.GetUserFiles(constants.GANETI_RUNAS)
679 utils.CreateBackup(priv_key)
680 utils.CreateBackup(pub_key)
684 class LUVerifyCluster(LogicalUnit):
685 """Verifies the cluster status.
688 HPATH = "cluster-verify"
689 HTYPE = constants.HTYPE_CLUSTER
690 _OP_REQP = ["skip_checks"]
693 def ExpandNames(self):
694 self.needed_locks = {
695 locking.LEVEL_NODE: locking.ALL_SET,
696 locking.LEVEL_INSTANCE: locking.ALL_SET,
698 self.share_locks = dict(((i, 1) for i in locking.LEVELS))
700 def _VerifyNode(self, nodeinfo, file_list, local_cksum,
701 node_result, feedback_fn, master_files,
703 """Run multiple tests against a node.
707 - compares ganeti version
708 - checks vg existance and size > 20G
709 - checks config file checksum
710 - checks ssh to other nodes
712 @type nodeinfo: L{objects.Node}
713 @param nodeinfo: the node to check
714 @param file_list: required list of files
715 @param local_cksum: dictionary of local files and their checksums
716 @param node_result: the results from the node
717 @param feedback_fn: function used to accumulate results
718 @param master_files: list of files that only masters should have
719 @param drbd_map: the useddrbd minors for this node, in
720 form of minor: (instance, must_exist) which correspond to instances
721 and their running status
722 @param vg_name: Ganeti Volume Group (result of self.cfg.GetVGName())
727 # main result, node_result should be a non-empty dict
728 if not node_result or not isinstance(node_result, dict):
729 feedback_fn(" - ERROR: unable to verify node %s." % (node,))
732 # compares ganeti version
733 local_version = constants.PROTOCOL_VERSION
734 remote_version = node_result.get('version', None)
735 if not (remote_version and isinstance(remote_version, (list, tuple)) and
736 len(remote_version) == 2):
737 feedback_fn(" - ERROR: connection to %s failed" % (node))
740 if local_version != remote_version[0]:
741 feedback_fn(" - ERROR: incompatible protocol versions: master %s,"
742 " node %s %s" % (local_version, node, remote_version[0]))
745 # node seems compatible, we can actually try to look into its results
749 # full package version
750 if constants.RELEASE_VERSION != remote_version[1]:
751 feedback_fn(" - WARNING: software version mismatch: master %s,"
753 (constants.RELEASE_VERSION, node, remote_version[1]))
755 # checks vg existence and size > 20G
756 if vg_name is not None:
757 vglist = node_result.get(constants.NV_VGLIST, None)
759 feedback_fn(" - ERROR: unable to check volume groups on node %s." %
763 vgstatus = utils.CheckVolumeGroupSize(vglist, vg_name,
764 constants.MIN_VG_SIZE)
766 feedback_fn(" - ERROR: %s on node %s" % (vgstatus, node))
769 # checks config file checksum
771 remote_cksum = node_result.get(constants.NV_FILELIST, None)
772 if not isinstance(remote_cksum, dict):
774 feedback_fn(" - ERROR: node hasn't returned file checksum data")
776 for file_name in file_list:
777 node_is_mc = nodeinfo.master_candidate
778 must_have_file = file_name not in master_files
779 if file_name not in remote_cksum:
780 if node_is_mc or must_have_file:
782 feedback_fn(" - ERROR: file '%s' missing" % file_name)
783 elif remote_cksum[file_name] != local_cksum[file_name]:
784 if node_is_mc or must_have_file:
786 feedback_fn(" - ERROR: file '%s' has wrong checksum" % file_name)
788 # not candidate and this is not a must-have file
790 feedback_fn(" - ERROR: non master-candidate has old/wrong file"
793 # all good, except non-master/non-must have combination
794 if not node_is_mc and not must_have_file:
795 feedback_fn(" - ERROR: file '%s' should not exist on non master"
796 " candidates" % file_name)
800 if constants.NV_NODELIST not in node_result:
802 feedback_fn(" - ERROR: node hasn't returned node ssh connectivity data")
804 if node_result[constants.NV_NODELIST]:
806 for node in node_result[constants.NV_NODELIST]:
807 feedback_fn(" - ERROR: ssh communication with node '%s': %s" %
808 (node, node_result[constants.NV_NODELIST][node]))
810 if constants.NV_NODENETTEST not in node_result:
812 feedback_fn(" - ERROR: node hasn't returned node tcp connectivity data")
814 if node_result[constants.NV_NODENETTEST]:
816 nlist = utils.NiceSort(node_result[constants.NV_NODENETTEST].keys())
818 feedback_fn(" - ERROR: tcp communication with node '%s': %s" %
819 (node, node_result[constants.NV_NODENETTEST][node]))
821 hyp_result = node_result.get(constants.NV_HYPERVISOR, None)
822 if isinstance(hyp_result, dict):
823 for hv_name, hv_result in hyp_result.iteritems():
824 if hv_result is not None:
825 feedback_fn(" - ERROR: hypervisor %s verify failure: '%s'" %
826 (hv_name, hv_result))
828 # check used drbd list
829 if vg_name is not None:
830 used_minors = node_result.get(constants.NV_DRBDLIST, [])
831 if not isinstance(used_minors, (tuple, list)):
832 feedback_fn(" - ERROR: cannot parse drbd status file: %s" %
835 for minor, (iname, must_exist) in drbd_map.items():
836 if minor not in used_minors and must_exist:
837 feedback_fn(" - ERROR: drbd minor %d of instance %s is"
838 " not active" % (minor, iname))
840 for minor in used_minors:
841 if minor not in drbd_map:
842 feedback_fn(" - ERROR: unallocated drbd minor %d is in use" %
848 def _VerifyInstance(self, instance, instanceconfig, node_vol_is,
849 node_instance, feedback_fn, n_offline):
850 """Verify an instance.
852 This function checks to see if the required block devices are
853 available on the instance's node.
858 node_current = instanceconfig.primary_node
861 instanceconfig.MapLVsByNode(node_vol_should)
863 for node in node_vol_should:
864 if node in n_offline:
865 # ignore missing volumes on offline nodes
867 for volume in node_vol_should[node]:
868 if node not in node_vol_is or volume not in node_vol_is[node]:
869 feedback_fn(" - ERROR: volume %s missing on node %s" %
873 if instanceconfig.admin_up:
874 if ((node_current not in node_instance or
875 not instance in node_instance[node_current]) and
876 node_current not in n_offline):
877 feedback_fn(" - ERROR: instance %s not running on node %s" %
878 (instance, node_current))
881 for node in node_instance:
882 if (not node == node_current):
883 if instance in node_instance[node]:
884 feedback_fn(" - ERROR: instance %s should not run on node %s" %
890 def _VerifyOrphanVolumes(self, node_vol_should, node_vol_is, feedback_fn):
891 """Verify if there are any unknown volumes in the cluster.
893 The .os, .swap and backup volumes are ignored. All other volumes are
899 for node in node_vol_is:
900 for volume in node_vol_is[node]:
901 if node not in node_vol_should or volume not in node_vol_should[node]:
902 feedback_fn(" - ERROR: volume %s on node %s should not exist" %
907 def _VerifyOrphanInstances(self, instancelist, node_instance, feedback_fn):
908 """Verify the list of running instances.
910 This checks what instances are running but unknown to the cluster.
914 for node in node_instance:
915 for runninginstance in node_instance[node]:
916 if runninginstance not in instancelist:
917 feedback_fn(" - ERROR: instance %s on node %s should not exist" %
918 (runninginstance, node))
922 def _VerifyNPlusOneMemory(self, node_info, instance_cfg, feedback_fn):
923 """Verify N+1 Memory Resilience.
925 Check that if one single node dies we can still start all the instances it
931 for node, nodeinfo in node_info.iteritems():
932 # This code checks that every node which is now listed as secondary has
933 # enough memory to host all instances it is supposed to should a single
934 # other node in the cluster fail.
935 # FIXME: not ready for failover to an arbitrary node
936 # FIXME: does not support file-backed instances
937 # WARNING: we currently take into account down instances as well as up
938 # ones, considering that even if they're down someone might want to start
939 # them even in the event of a node failure.
940 for prinode, instances in nodeinfo['sinst-by-pnode'].iteritems():
942 for instance in instances:
943 bep = self.cfg.GetClusterInfo().FillBE(instance_cfg[instance])
944 if bep[constants.BE_AUTO_BALANCE]:
945 needed_mem += bep[constants.BE_MEMORY]
946 if nodeinfo['mfree'] < needed_mem:
947 feedback_fn(" - ERROR: not enough memory on node %s to accomodate"
948 " failovers should node %s fail" % (node, prinode))
952 def CheckPrereq(self):
953 """Check prerequisites.
955 Transform the list of checks we're going to skip into a set and check that
956 all its members are valid.
959 self.skip_set = frozenset(self.op.skip_checks)
960 if not constants.VERIFY_OPTIONAL_CHECKS.issuperset(self.skip_set):
961 raise errors.OpPrereqError("Invalid checks to be skipped specified")
963 def BuildHooksEnv(self):
966 Cluster-Verify hooks just rone in the post phase and their failure makes
967 the output be logged in the verify output and the verification to fail.
970 all_nodes = self.cfg.GetNodeList()
972 "CLUSTER_TAGS": " ".join(self.cfg.GetClusterInfo().GetTags())
974 for node in self.cfg.GetAllNodesInfo().values():
975 env["NODE_TAGS_%s" % node.name] = " ".join(node.GetTags())
977 return env, [], all_nodes
979 def Exec(self, feedback_fn):
980 """Verify integrity of cluster, performing various test on nodes.
984 feedback_fn("* Verifying global settings")
985 for msg in self.cfg.VerifyConfig():
986 feedback_fn(" - ERROR: %s" % msg)
988 vg_name = self.cfg.GetVGName()
989 hypervisors = self.cfg.GetClusterInfo().enabled_hypervisors
990 nodelist = utils.NiceSort(self.cfg.GetNodeList())
991 nodeinfo = [self.cfg.GetNodeInfo(nname) for nname in nodelist]
992 instancelist = utils.NiceSort(self.cfg.GetInstanceList())
993 instanceinfo = dict((iname, self.cfg.GetInstanceInfo(iname))
994 for iname in instancelist)
995 i_non_redundant = [] # Non redundant instances
996 i_non_a_balanced = [] # Non auto-balanced instances
997 n_offline = [] # List of offline nodes
998 n_drained = [] # List of nodes being drained
1004 # FIXME: verify OS list
1005 # do local checksums
1006 master_files = [constants.CLUSTER_CONF_FILE]
1008 file_names = ssconf.SimpleStore().GetFileList()
1009 file_names.append(constants.SSL_CERT_FILE)
1010 file_names.append(constants.RAPI_CERT_FILE)
1011 file_names.extend(master_files)
1013 local_checksums = utils.FingerprintFiles(file_names)
1015 feedback_fn("* Gathering data (%d nodes)" % len(nodelist))
1016 node_verify_param = {
1017 constants.NV_FILELIST: file_names,
1018 constants.NV_NODELIST: [node.name for node in nodeinfo
1019 if not node.offline],
1020 constants.NV_HYPERVISOR: hypervisors,
1021 constants.NV_NODENETTEST: [(node.name, node.primary_ip,
1022 node.secondary_ip) for node in nodeinfo
1023 if not node.offline],
1024 constants.NV_INSTANCELIST: hypervisors,
1025 constants.NV_VERSION: None,
1026 constants.NV_HVINFO: self.cfg.GetHypervisorType(),
1028 if vg_name is not None:
1029 node_verify_param[constants.NV_VGLIST] = None
1030 node_verify_param[constants.NV_LVLIST] = vg_name
1031 node_verify_param[constants.NV_DRBDLIST] = None
1032 all_nvinfo = self.rpc.call_node_verify(nodelist, node_verify_param,
1033 self.cfg.GetClusterName())
1035 cluster = self.cfg.GetClusterInfo()
1036 master_node = self.cfg.GetMasterNode()
1037 all_drbd_map = self.cfg.ComputeDRBDMap()
1039 for node_i in nodeinfo:
1043 feedback_fn("* Skipping offline node %s" % (node,))
1044 n_offline.append(node)
1047 if node == master_node:
1049 elif node_i.master_candidate:
1050 ntype = "master candidate"
1051 elif node_i.drained:
1053 n_drained.append(node)
1056 feedback_fn("* Verifying node %s (%s)" % (node, ntype))
1058 msg = all_nvinfo[node].fail_msg
1060 feedback_fn(" - ERROR: while contacting node %s: %s" % (node, msg))
1064 nresult = all_nvinfo[node].payload
1066 for minor, instance in all_drbd_map[node].items():
1067 if instance not in instanceinfo:
1068 feedback_fn(" - ERROR: ghost instance '%s' in temporary DRBD map" %
1070 # ghost instance should not be running, but otherwise we
1071 # don't give double warnings (both ghost instance and
1072 # unallocated minor in use)
1073 node_drbd[minor] = (instance, False)
1075 instance = instanceinfo[instance]
1076 node_drbd[minor] = (instance.name, instance.admin_up)
1077 result = self._VerifyNode(node_i, file_names, local_checksums,
1078 nresult, feedback_fn, master_files,
1082 lvdata = nresult.get(constants.NV_LVLIST, "Missing LV data")
1084 node_volume[node] = {}
1085 elif isinstance(lvdata, basestring):
1086 feedback_fn(" - ERROR: LVM problem on node %s: %s" %
1087 (node, utils.SafeEncode(lvdata)))
1089 node_volume[node] = {}
1090 elif not isinstance(lvdata, dict):
1091 feedback_fn(" - ERROR: connection to %s failed (lvlist)" % (node,))
1095 node_volume[node] = lvdata
1098 idata = nresult.get(constants.NV_INSTANCELIST, None)
1099 if not isinstance(idata, list):
1100 feedback_fn(" - ERROR: connection to %s failed (instancelist)" %
1105 node_instance[node] = idata
1108 nodeinfo = nresult.get(constants.NV_HVINFO, None)
1109 if not isinstance(nodeinfo, dict):
1110 feedback_fn(" - ERROR: connection to %s failed (hvinfo)" % (node,))
1116 "mfree": int(nodeinfo['memory_free']),
1119 # dictionary holding all instances this node is secondary for,
1120 # grouped by their primary node. Each key is a cluster node, and each
1121 # value is a list of instances which have the key as primary and the
1122 # current node as secondary. this is handy to calculate N+1 memory
1123 # availability if you can only failover from a primary to its
1125 "sinst-by-pnode": {},
1127 # FIXME: devise a free space model for file based instances as well
1128 if vg_name is not None:
1129 if (constants.NV_VGLIST not in nresult or
1130 vg_name not in nresult[constants.NV_VGLIST]):
1131 feedback_fn(" - ERROR: node %s didn't return data for the"
1132 " volume group '%s' - it is either missing or broken" %
1136 node_info[node]["dfree"] = int(nresult[constants.NV_VGLIST][vg_name])
1137 except (ValueError, KeyError):
1138 feedback_fn(" - ERROR: invalid nodeinfo value returned"
1139 " from node %s" % (node,))
1143 node_vol_should = {}
1145 for instance in instancelist:
1146 feedback_fn("* Verifying instance %s" % instance)
1147 inst_config = instanceinfo[instance]
1148 result = self._VerifyInstance(instance, inst_config, node_volume,
1149 node_instance, feedback_fn, n_offline)
1151 inst_nodes_offline = []
1153 inst_config.MapLVsByNode(node_vol_should)
1155 instance_cfg[instance] = inst_config
1157 pnode = inst_config.primary_node
1158 if pnode in node_info:
1159 node_info[pnode]['pinst'].append(instance)
1160 elif pnode not in n_offline:
1161 feedback_fn(" - ERROR: instance %s, connection to primary node"
1162 " %s failed" % (instance, pnode))
1165 if pnode in n_offline:
1166 inst_nodes_offline.append(pnode)
1168 # If the instance is non-redundant we cannot survive losing its primary
1169 # node, so we are not N+1 compliant. On the other hand we have no disk
1170 # templates with more than one secondary so that situation is not well
1172 # FIXME: does not support file-backed instances
1173 if len(inst_config.secondary_nodes) == 0:
1174 i_non_redundant.append(instance)
1175 elif len(inst_config.secondary_nodes) > 1:
1176 feedback_fn(" - WARNING: multiple secondaries for instance %s"
1179 if not cluster.FillBE(inst_config)[constants.BE_AUTO_BALANCE]:
1180 i_non_a_balanced.append(instance)
1182 for snode in inst_config.secondary_nodes:
1183 if snode in node_info:
1184 node_info[snode]['sinst'].append(instance)
1185 if pnode not in node_info[snode]['sinst-by-pnode']:
1186 node_info[snode]['sinst-by-pnode'][pnode] = []
1187 node_info[snode]['sinst-by-pnode'][pnode].append(instance)
1188 elif snode not in n_offline:
1189 feedback_fn(" - ERROR: instance %s, connection to secondary node"
1190 " %s failed" % (instance, snode))
1192 if snode in n_offline:
1193 inst_nodes_offline.append(snode)
1195 if inst_nodes_offline:
1196 # warn that the instance lives on offline nodes, and set bad=True
1197 feedback_fn(" - ERROR: instance lives on offline node(s) %s" %
1198 ", ".join(inst_nodes_offline))
1201 feedback_fn("* Verifying orphan volumes")
1202 result = self._VerifyOrphanVolumes(node_vol_should, node_volume,
1206 feedback_fn("* Verifying remaining instances")
1207 result = self._VerifyOrphanInstances(instancelist, node_instance,
1211 if constants.VERIFY_NPLUSONE_MEM not in self.skip_set:
1212 feedback_fn("* Verifying N+1 Memory redundancy")
1213 result = self._VerifyNPlusOneMemory(node_info, instance_cfg, feedback_fn)
1216 feedback_fn("* Other Notes")
1218 feedback_fn(" - NOTICE: %d non-redundant instance(s) found."
1219 % len(i_non_redundant))
1221 if i_non_a_balanced:
1222 feedback_fn(" - NOTICE: %d non-auto-balanced instance(s) found."
1223 % len(i_non_a_balanced))
1226 feedback_fn(" - NOTICE: %d offline node(s) found." % len(n_offline))
1229 feedback_fn(" - NOTICE: %d drained node(s) found." % len(n_drained))
1233 def HooksCallBack(self, phase, hooks_results, feedback_fn, lu_result):
1234 """Analize the post-hooks' result
1236 This method analyses the hook result, handles it, and sends some
1237 nicely-formatted feedback back to the user.
1239 @param phase: one of L{constants.HOOKS_PHASE_POST} or
1240 L{constants.HOOKS_PHASE_PRE}; it denotes the hooks phase
1241 @param hooks_results: the results of the multi-node hooks rpc call
1242 @param feedback_fn: function used send feedback back to the caller
1243 @param lu_result: previous Exec result
1244 @return: the new Exec result, based on the previous result
1248 # We only really run POST phase hooks, and are only interested in
1250 if phase == constants.HOOKS_PHASE_POST:
1251 # Used to change hooks' output to proper indentation
1252 indent_re = re.compile('^', re.M)
1253 feedback_fn("* Hooks Results")
1254 if not hooks_results:
1255 feedback_fn(" - ERROR: general communication failure")
1258 for node_name in hooks_results:
1259 show_node_header = True
1260 res = hooks_results[node_name]
1264 # no need to warn or set fail return value
1266 feedback_fn(" Communication failure in hooks execution: %s" %
1270 for script, hkr, output in res.payload:
1271 if hkr == constants.HKR_FAIL:
1272 # The node header is only shown once, if there are
1273 # failing hooks on that node
1274 if show_node_header:
1275 feedback_fn(" Node %s:" % node_name)
1276 show_node_header = False
1277 feedback_fn(" ERROR: Script %s failed, output:" % script)
1278 output = indent_re.sub(' ', output)
1279 feedback_fn("%s" % output)
1285 class LUVerifyDisks(NoHooksLU):
1286 """Verifies the cluster disks status.
1292 def ExpandNames(self):
1293 self.needed_locks = {
1294 locking.LEVEL_NODE: locking.ALL_SET,
1295 locking.LEVEL_INSTANCE: locking.ALL_SET,
1297 self.share_locks = dict(((i, 1) for i in locking.LEVELS))
1299 def CheckPrereq(self):
1300 """Check prerequisites.
1302 This has no prerequisites.
1307 def Exec(self, feedback_fn):
1308 """Verify integrity of cluster disks.
1310 @rtype: tuple of three items
1311 @return: a tuple of (dict of node-to-node_error, list of instances
1312 which need activate-disks, dict of instance: (node, volume) for
1316 result = res_nodes, res_instances, res_missing = {}, [], {}
1318 vg_name = self.cfg.GetVGName()
1319 nodes = utils.NiceSort(self.cfg.GetNodeList())
1320 instances = [self.cfg.GetInstanceInfo(name)
1321 for name in self.cfg.GetInstanceList()]
1324 for inst in instances:
1326 if (not inst.admin_up or
1327 inst.disk_template not in constants.DTS_NET_MIRROR):
1329 inst.MapLVsByNode(inst_lvs)
1330 # transform { iname: {node: [vol,],},} to {(node, vol): iname}
1331 for node, vol_list in inst_lvs.iteritems():
1332 for vol in vol_list:
1333 nv_dict[(node, vol)] = inst
1338 node_lvs = self.rpc.call_volume_list(nodes, vg_name)
1343 node_res = node_lvs[node]
1344 if node_res.offline:
1346 msg = node_res.fail_msg
1348 logging.warning("Error enumerating LVs on node %s: %s", node, msg)
1349 res_nodes[node] = msg
1352 lvs = node_res.payload
1353 for lv_name, (_, lv_inactive, lv_online) in lvs.items():
1354 inst = nv_dict.pop((node, lv_name), None)
1355 if (not lv_online and inst is not None
1356 and inst.name not in res_instances):
1357 res_instances.append(inst.name)
1359 # any leftover items in nv_dict are missing LVs, let's arrange the
1361 for key, inst in nv_dict.iteritems():
1362 if inst.name not in res_missing:
1363 res_missing[inst.name] = []
1364 res_missing[inst.name].append(key)
1369 class LURenameCluster(LogicalUnit):
1370 """Rename the cluster.
1373 HPATH = "cluster-rename"
1374 HTYPE = constants.HTYPE_CLUSTER
1377 def BuildHooksEnv(self):
1382 "OP_TARGET": self.cfg.GetClusterName(),
1383 "NEW_NAME": self.op.name,
1385 mn = self.cfg.GetMasterNode()
1386 return env, [mn], [mn]
1388 def CheckPrereq(self):
1389 """Verify that the passed name is a valid one.
1392 hostname = utils.HostInfo(self.op.name)
1394 new_name = hostname.name
1395 self.ip = new_ip = hostname.ip
1396 old_name = self.cfg.GetClusterName()
1397 old_ip = self.cfg.GetMasterIP()
1398 if new_name == old_name and new_ip == old_ip:
1399 raise errors.OpPrereqError("Neither the name nor the IP address of the"
1400 " cluster has changed")
1401 if new_ip != old_ip:
1402 if utils.TcpPing(new_ip, constants.DEFAULT_NODED_PORT):
1403 raise errors.OpPrereqError("The given cluster IP address (%s) is"
1404 " reachable on the network. Aborting." %
1407 self.op.name = new_name
1409 def Exec(self, feedback_fn):
1410 """Rename the cluster.
1413 clustername = self.op.name
1416 # shutdown the master IP
1417 master = self.cfg.GetMasterNode()
1418 result = self.rpc.call_node_stop_master(master, False)
1419 result.Raise("Could not disable the master role")
1422 cluster = self.cfg.GetClusterInfo()
1423 cluster.cluster_name = clustername
1424 cluster.master_ip = ip
1425 self.cfg.Update(cluster)
1427 # update the known hosts file
1428 ssh.WriteKnownHostsFile(self.cfg, constants.SSH_KNOWN_HOSTS_FILE)
1429 node_list = self.cfg.GetNodeList()
1431 node_list.remove(master)
1434 result = self.rpc.call_upload_file(node_list,
1435 constants.SSH_KNOWN_HOSTS_FILE)
1436 for to_node, to_result in result.iteritems():
1437 msg = to_result.fail_msg
1439 msg = ("Copy of file %s to node %s failed: %s" %
1440 (constants.SSH_KNOWN_HOSTS_FILE, to_node, msg))
1441 self.proc.LogWarning(msg)
1444 result = self.rpc.call_node_start_master(master, False)
1445 msg = result.fail_msg
1447 self.LogWarning("Could not re-enable the master role on"
1448 " the master, please restart manually: %s", msg)
1451 def _RecursiveCheckIfLVMBased(disk):
1452 """Check if the given disk or its children are lvm-based.
1454 @type disk: L{objects.Disk}
1455 @param disk: the disk to check
1457 @return: boolean indicating whether a LD_LV dev_type was found or not
1461 for chdisk in disk.children:
1462 if _RecursiveCheckIfLVMBased(chdisk):
1464 return disk.dev_type == constants.LD_LV
1467 class LUSetClusterParams(LogicalUnit):
1468 """Change the parameters of the cluster.
1471 HPATH = "cluster-modify"
1472 HTYPE = constants.HTYPE_CLUSTER
1476 def CheckArguments(self):
1480 if not hasattr(self.op, "candidate_pool_size"):
1481 self.op.candidate_pool_size = None
1482 if self.op.candidate_pool_size is not None:
1484 self.op.candidate_pool_size = int(self.op.candidate_pool_size)
1485 except (ValueError, TypeError), err:
1486 raise errors.OpPrereqError("Invalid candidate_pool_size value: %s" %
1488 if self.op.candidate_pool_size < 1:
1489 raise errors.OpPrereqError("At least one master candidate needed")
1491 def ExpandNames(self):
1492 # FIXME: in the future maybe other cluster params won't require checking on
1493 # all nodes to be modified.
1494 self.needed_locks = {
1495 locking.LEVEL_NODE: locking.ALL_SET,
1497 self.share_locks[locking.LEVEL_NODE] = 1
1499 def BuildHooksEnv(self):
1504 "OP_TARGET": self.cfg.GetClusterName(),
1505 "NEW_VG_NAME": self.op.vg_name,
1507 mn = self.cfg.GetMasterNode()
1508 return env, [mn], [mn]
1510 def CheckPrereq(self):
1511 """Check prerequisites.
1513 This checks whether the given params don't conflict and
1514 if the given volume group is valid.
1517 if self.op.vg_name is not None and not self.op.vg_name:
1518 instances = self.cfg.GetAllInstancesInfo().values()
1519 for inst in instances:
1520 for disk in inst.disks:
1521 if _RecursiveCheckIfLVMBased(disk):
1522 raise errors.OpPrereqError("Cannot disable lvm storage while"
1523 " lvm-based instances exist")
1525 node_list = self.acquired_locks[locking.LEVEL_NODE]
1527 # if vg_name not None, checks given volume group on all nodes
1529 vglist = self.rpc.call_vg_list(node_list)
1530 for node in node_list:
1531 msg = vglist[node].fail_msg
1533 # ignoring down node
1534 self.LogWarning("Error while gathering data on node %s"
1535 " (ignoring node): %s", node, msg)
1537 vgstatus = utils.CheckVolumeGroupSize(vglist[node].payload,
1539 constants.MIN_VG_SIZE)
1541 raise errors.OpPrereqError("Error on node '%s': %s" %
1544 self.cluster = cluster = self.cfg.GetClusterInfo()
1545 # validate params changes
1546 if self.op.beparams:
1547 utils.ForceDictType(self.op.beparams, constants.BES_PARAMETER_TYPES)
1548 self.new_beparams = objects.FillDict(
1549 cluster.beparams[constants.PP_DEFAULT], self.op.beparams)
1551 if self.op.nicparams:
1552 utils.ForceDictType(self.op.nicparams, constants.NICS_PARAMETER_TYPES)
1553 self.new_nicparams = objects.FillDict(
1554 cluster.nicparams[constants.PP_DEFAULT], self.op.nicparams)
1555 objects.NIC.CheckParameterSyntax(self.new_nicparams)
1557 # hypervisor list/parameters
1558 self.new_hvparams = objects.FillDict(cluster.hvparams, {})
1559 if self.op.hvparams:
1560 if not isinstance(self.op.hvparams, dict):
1561 raise errors.OpPrereqError("Invalid 'hvparams' parameter on input")
1562 for hv_name, hv_dict in self.op.hvparams.items():
1563 if hv_name not in self.new_hvparams:
1564 self.new_hvparams[hv_name] = hv_dict
1566 self.new_hvparams[hv_name].update(hv_dict)
1568 if self.op.enabled_hypervisors is not None:
1569 self.hv_list = self.op.enabled_hypervisors
1571 self.hv_list = cluster.enabled_hypervisors
1573 if self.op.hvparams or self.op.enabled_hypervisors is not None:
1574 # either the enabled list has changed, or the parameters have, validate
1575 for hv_name, hv_params in self.new_hvparams.items():
1576 if ((self.op.hvparams and hv_name in self.op.hvparams) or
1577 (self.op.enabled_hypervisors and
1578 hv_name in self.op.enabled_hypervisors)):
1579 # either this is a new hypervisor, or its parameters have changed
1580 hv_class = hypervisor.GetHypervisor(hv_name)
1581 utils.ForceDictType(hv_params, constants.HVS_PARAMETER_TYPES)
1582 hv_class.CheckParameterSyntax(hv_params)
1583 _CheckHVParams(self, node_list, hv_name, hv_params)
1585 def Exec(self, feedback_fn):
1586 """Change the parameters of the cluster.
1589 if self.op.vg_name is not None:
1590 new_volume = self.op.vg_name
1593 if new_volume != self.cfg.GetVGName():
1594 self.cfg.SetVGName(new_volume)
1596 feedback_fn("Cluster LVM configuration already in desired"
1597 " state, not changing")
1598 if self.op.hvparams:
1599 self.cluster.hvparams = self.new_hvparams
1600 if self.op.enabled_hypervisors is not None:
1601 self.cluster.enabled_hypervisors = self.op.enabled_hypervisors
1602 if self.op.beparams:
1603 self.cluster.beparams[constants.PP_DEFAULT] = self.new_beparams
1604 if self.op.nicparams:
1605 self.cluster.nicparams[constants.PP_DEFAULT] = self.new_nicparams
1607 if self.op.candidate_pool_size is not None:
1608 self.cluster.candidate_pool_size = self.op.candidate_pool_size
1610 self.cfg.Update(self.cluster)
1612 # we want to update nodes after the cluster so that if any errors
1613 # happen, we have recorded and saved the cluster info
1614 if self.op.candidate_pool_size is not None:
1615 _AdjustCandidatePool(self)
1618 def _RedistributeAncillaryFiles(lu, additional_nodes=None):
1619 """Distribute additional files which are part of the cluster configuration.
1621 ConfigWriter takes care of distributing the config and ssconf files, but
1622 there are more files which should be distributed to all nodes. This function
1623 makes sure those are copied.
1625 @param lu: calling logical unit
1626 @param additional_nodes: list of nodes not in the config to distribute to
1629 # 1. Gather target nodes
1630 myself = lu.cfg.GetNodeInfo(lu.cfg.GetMasterNode())
1631 dist_nodes = lu.cfg.GetNodeList()
1632 if additional_nodes is not None:
1633 dist_nodes.extend(additional_nodes)
1634 if myself.name in dist_nodes:
1635 dist_nodes.remove(myself.name)
1636 # 2. Gather files to distribute
1637 dist_files = set([constants.ETC_HOSTS,
1638 constants.SSH_KNOWN_HOSTS_FILE,
1639 constants.RAPI_CERT_FILE,
1640 constants.RAPI_USERS_FILE,
1643 enabled_hypervisors = lu.cfg.GetClusterInfo().enabled_hypervisors
1644 for hv_name in enabled_hypervisors:
1645 hv_class = hypervisor.GetHypervisor(hv_name)
1646 dist_files.update(hv_class.GetAncillaryFiles())
1648 # 3. Perform the files upload
1649 for fname in dist_files:
1650 if os.path.exists(fname):
1651 result = lu.rpc.call_upload_file(dist_nodes, fname)
1652 for to_node, to_result in result.items():
1653 msg = to_result.fail_msg
1655 msg = ("Copy of file %s to node %s failed: %s" %
1656 (fname, to_node, msg))
1657 lu.proc.LogWarning(msg)
1660 class LURedistributeConfig(NoHooksLU):
1661 """Force the redistribution of cluster configuration.
1663 This is a very simple LU.
1669 def ExpandNames(self):
1670 self.needed_locks = {
1671 locking.LEVEL_NODE: locking.ALL_SET,
1673 self.share_locks[locking.LEVEL_NODE] = 1
1675 def CheckPrereq(self):
1676 """Check prerequisites.
1680 def Exec(self, feedback_fn):
1681 """Redistribute the configuration.
1684 self.cfg.Update(self.cfg.GetClusterInfo())
1685 _RedistributeAncillaryFiles(self)
1688 def _WaitForSync(lu, instance, oneshot=False, unlock=False):
1689 """Sleep and poll for an instance's disk to sync.
1692 if not instance.disks:
1696 lu.proc.LogInfo("Waiting for instance %s to sync disks." % instance.name)
1698 node = instance.primary_node
1700 for dev in instance.disks:
1701 lu.cfg.SetDiskID(dev, node)
1704 degr_retries = 10 # in seconds, as we sleep 1 second each time
1708 cumul_degraded = False
1709 rstats = lu.rpc.call_blockdev_getmirrorstatus(node, instance.disks)
1710 msg = rstats.fail_msg
1712 lu.LogWarning("Can't get any data from node %s: %s", node, msg)
1715 raise errors.RemoteError("Can't contact node %s for mirror data,"
1716 " aborting." % node)
1719 rstats = rstats.payload
1721 for i, mstat in enumerate(rstats):
1723 lu.LogWarning("Can't compute data for node %s/%s",
1724 node, instance.disks[i].iv_name)
1726 # we ignore the ldisk parameter
1727 perc_done, est_time, is_degraded, _ = mstat
1728 cumul_degraded = cumul_degraded or (is_degraded and perc_done is None)
1729 if perc_done is not None:
1731 if est_time is not None:
1732 rem_time = "%d estimated seconds remaining" % est_time
1735 rem_time = "no time estimate"
1736 lu.proc.LogInfo("- device %s: %5.2f%% done, %s" %
1737 (instance.disks[i].iv_name, perc_done, rem_time))
1739 # if we're done but degraded, let's do a few small retries, to
1740 # make sure we see a stable and not transient situation; therefore
1741 # we force restart of the loop
1742 if (done or oneshot) and cumul_degraded and degr_retries > 0:
1743 logging.info("Degraded disks found, %d retries left", degr_retries)
1751 time.sleep(min(60, max_time))
1754 lu.proc.LogInfo("Instance %s's disks are in sync." % instance.name)
1755 return not cumul_degraded
1758 def _CheckDiskConsistency(lu, dev, node, on_primary, ldisk=False):
1759 """Check that mirrors are not degraded.
1761 The ldisk parameter, if True, will change the test from the
1762 is_degraded attribute (which represents overall non-ok status for
1763 the device(s)) to the ldisk (representing the local storage status).
1766 lu.cfg.SetDiskID(dev, node)
1773 if on_primary or dev.AssembleOnSecondary():
1774 rstats = lu.rpc.call_blockdev_find(node, dev)
1775 msg = rstats.fail_msg
1777 lu.LogWarning("Can't find disk on node %s: %s", node, msg)
1779 elif not rstats.payload:
1780 lu.LogWarning("Can't find disk on node %s", node)
1783 result = result and (not rstats.payload[idx])
1785 for child in dev.children:
1786 result = result and _CheckDiskConsistency(lu, child, node, on_primary)
1791 class LUDiagnoseOS(NoHooksLU):
1792 """Logical unit for OS diagnose/query.
1795 _OP_REQP = ["output_fields", "names"]
1797 _FIELDS_STATIC = utils.FieldSet()
1798 _FIELDS_DYNAMIC = utils.FieldSet("name", "valid", "node_status")
1800 def ExpandNames(self):
1802 raise errors.OpPrereqError("Selective OS query not supported")
1804 _CheckOutputFields(static=self._FIELDS_STATIC,
1805 dynamic=self._FIELDS_DYNAMIC,
1806 selected=self.op.output_fields)
1808 # Lock all nodes, in shared mode
1809 # Temporary removal of locks, should be reverted later
1810 # TODO: reintroduce locks when they are lighter-weight
1811 self.needed_locks = {}
1812 #self.share_locks[locking.LEVEL_NODE] = 1
1813 #self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
1815 def CheckPrereq(self):
1816 """Check prerequisites.
1821 def _DiagnoseByOS(node_list, rlist):
1822 """Remaps a per-node return list into an a per-os per-node dictionary
1824 @param node_list: a list with the names of all nodes
1825 @param rlist: a map with node names as keys and OS objects as values
1828 @return: a dictionary with osnames as keys and as value another map, with
1829 nodes as keys and tuples of (path, status, diagnose) as values, eg::
1831 {"debian-etch": {"node1": [(/usr/lib/..., True, ""),
1832 (/srv/..., False, "invalid api")],
1833 "node2": [(/srv/..., True, "")]}
1838 # we build here the list of nodes that didn't fail the RPC (at RPC
1839 # level), so that nodes with a non-responding node daemon don't
1840 # make all OSes invalid
1841 good_nodes = [node_name for node_name in rlist
1842 if not rlist[node_name].fail_msg]
1843 for node_name, nr in rlist.items():
1844 if nr.fail_msg or not nr.payload:
1846 for name, path, status, diagnose in nr.payload:
1847 if name not in all_os:
1848 # build a list of nodes for this os containing empty lists
1849 # for each node in node_list
1851 for nname in good_nodes:
1852 all_os[name][nname] = []
1853 all_os[name][node_name].append((path, status, diagnose))
1856 def Exec(self, feedback_fn):
1857 """Compute the list of OSes.
1860 valid_nodes = [node for node in self.cfg.GetOnlineNodeList()]
1861 node_data = self.rpc.call_os_diagnose(valid_nodes)
1862 pol = self._DiagnoseByOS(valid_nodes, node_data)
1864 for os_name, os_data in pol.items():
1866 for field in self.op.output_fields:
1869 elif field == "valid":
1870 val = utils.all([osl and osl[0][1] for osl in os_data.values()])
1871 elif field == "node_status":
1872 # this is just a copy of the dict
1874 for node_name, nos_list in os_data.items():
1875 val[node_name] = nos_list
1877 raise errors.ParameterError(field)
1884 class LURemoveNode(LogicalUnit):
1885 """Logical unit for removing a node.
1888 HPATH = "node-remove"
1889 HTYPE = constants.HTYPE_NODE
1890 _OP_REQP = ["node_name"]
1892 def BuildHooksEnv(self):
1895 This doesn't run on the target node in the pre phase as a failed
1896 node would then be impossible to remove.
1900 "OP_TARGET": self.op.node_name,
1901 "NODE_NAME": self.op.node_name,
1903 all_nodes = self.cfg.GetNodeList()
1904 all_nodes.remove(self.op.node_name)
1905 return env, all_nodes, all_nodes
1907 def CheckPrereq(self):
1908 """Check prerequisites.
1911 - the node exists in the configuration
1912 - it does not have primary or secondary instances
1913 - it's not the master
1915 Any errors are signalled by raising errors.OpPrereqError.
1918 node = self.cfg.GetNodeInfo(self.cfg.ExpandNodeName(self.op.node_name))
1920 raise errors.OpPrereqError, ("Node '%s' is unknown." % self.op.node_name)
1922 instance_list = self.cfg.GetInstanceList()
1924 masternode = self.cfg.GetMasterNode()
1925 if node.name == masternode:
1926 raise errors.OpPrereqError("Node is the master node,"
1927 " you need to failover first.")
1929 for instance_name in instance_list:
1930 instance = self.cfg.GetInstanceInfo(instance_name)
1931 if node.name in instance.all_nodes:
1932 raise errors.OpPrereqError("Instance %s is still running on the node,"
1933 " please remove first." % instance_name)
1934 self.op.node_name = node.name
1937 def Exec(self, feedback_fn):
1938 """Removes the node from the cluster.
1942 logging.info("Stopping the node daemon and removing configs from node %s",
1945 self.context.RemoveNode(node.name)
1947 result = self.rpc.call_node_leave_cluster(node.name)
1948 msg = result.fail_msg
1950 self.LogWarning("Errors encountered on the remote node while leaving"
1951 " the cluster: %s", msg)
1953 # Promote nodes to master candidate as needed
1954 _AdjustCandidatePool(self)
1957 class LUQueryNodes(NoHooksLU):
1958 """Logical unit for querying nodes.
1961 _OP_REQP = ["output_fields", "names", "use_locking"]
1963 _FIELDS_DYNAMIC = utils.FieldSet(
1965 "mtotal", "mnode", "mfree",
1967 "ctotal", "cnodes", "csockets",
1970 _FIELDS_STATIC = utils.FieldSet(
1971 "name", "pinst_cnt", "sinst_cnt",
1972 "pinst_list", "sinst_list",
1973 "pip", "sip", "tags",
1981 def ExpandNames(self):
1982 _CheckOutputFields(static=self._FIELDS_STATIC,
1983 dynamic=self._FIELDS_DYNAMIC,
1984 selected=self.op.output_fields)
1986 self.needed_locks = {}
1987 self.share_locks[locking.LEVEL_NODE] = 1
1990 self.wanted = _GetWantedNodes(self, self.op.names)
1992 self.wanted = locking.ALL_SET
1994 self.do_node_query = self._FIELDS_STATIC.NonMatching(self.op.output_fields)
1995 self.do_locking = self.do_node_query and self.op.use_locking
1997 # if we don't request only static fields, we need to lock the nodes
1998 self.needed_locks[locking.LEVEL_NODE] = self.wanted
2001 def CheckPrereq(self):
2002 """Check prerequisites.
2005 # The validation of the node list is done in the _GetWantedNodes,
2006 # if non empty, and if empty, there's no validation to do
2009 def Exec(self, feedback_fn):
2010 """Computes the list of nodes and their attributes.
2013 all_info = self.cfg.GetAllNodesInfo()
2015 nodenames = self.acquired_locks[locking.LEVEL_NODE]
2016 elif self.wanted != locking.ALL_SET:
2017 nodenames = self.wanted
2018 missing = set(nodenames).difference(all_info.keys())
2020 raise errors.OpExecError(
2021 "Some nodes were removed before retrieving their data: %s" % missing)
2023 nodenames = all_info.keys()
2025 nodenames = utils.NiceSort(nodenames)
2026 nodelist = [all_info[name] for name in nodenames]
2028 # begin data gathering
2030 if self.do_node_query:
2032 node_data = self.rpc.call_node_info(nodenames, self.cfg.GetVGName(),
2033 self.cfg.GetHypervisorType())
2034 for name in nodenames:
2035 nodeinfo = node_data[name]
2036 if not nodeinfo.fail_msg and nodeinfo.payload:
2037 nodeinfo = nodeinfo.payload
2038 fn = utils.TryConvert
2040 "mtotal": fn(int, nodeinfo.get('memory_total', None)),
2041 "mnode": fn(int, nodeinfo.get('memory_dom0', None)),
2042 "mfree": fn(int, nodeinfo.get('memory_free', None)),
2043 "dtotal": fn(int, nodeinfo.get('vg_size', None)),
2044 "dfree": fn(int, nodeinfo.get('vg_free', None)),
2045 "ctotal": fn(int, nodeinfo.get('cpu_total', None)),
2046 "bootid": nodeinfo.get('bootid', None),
2047 "cnodes": fn(int, nodeinfo.get('cpu_nodes', None)),
2048 "csockets": fn(int, nodeinfo.get('cpu_sockets', None)),
2051 live_data[name] = {}
2053 live_data = dict.fromkeys(nodenames, {})
2055 node_to_primary = dict([(name, set()) for name in nodenames])
2056 node_to_secondary = dict([(name, set()) for name in nodenames])
2058 inst_fields = frozenset(("pinst_cnt", "pinst_list",
2059 "sinst_cnt", "sinst_list"))
2060 if inst_fields & frozenset(self.op.output_fields):
2061 instancelist = self.cfg.GetInstanceList()
2063 for instance_name in instancelist:
2064 inst = self.cfg.GetInstanceInfo(instance_name)
2065 if inst.primary_node in node_to_primary:
2066 node_to_primary[inst.primary_node].add(inst.name)
2067 for secnode in inst.secondary_nodes:
2068 if secnode in node_to_secondary:
2069 node_to_secondary[secnode].add(inst.name)
2071 master_node = self.cfg.GetMasterNode()
2073 # end data gathering
2076 for node in nodelist:
2078 for field in self.op.output_fields:
2081 elif field == "pinst_list":
2082 val = list(node_to_primary[node.name])
2083 elif field == "sinst_list":
2084 val = list(node_to_secondary[node.name])
2085 elif field == "pinst_cnt":
2086 val = len(node_to_primary[node.name])
2087 elif field == "sinst_cnt":
2088 val = len(node_to_secondary[node.name])
2089 elif field == "pip":
2090 val = node.primary_ip
2091 elif field == "sip":
2092 val = node.secondary_ip
2093 elif field == "tags":
2094 val = list(node.GetTags())
2095 elif field == "serial_no":
2096 val = node.serial_no
2097 elif field == "master_candidate":
2098 val = node.master_candidate
2099 elif field == "master":
2100 val = node.name == master_node
2101 elif field == "offline":
2103 elif field == "drained":
2105 elif self._FIELDS_DYNAMIC.Matches(field):
2106 val = live_data[node.name].get(field, None)
2108 raise errors.ParameterError(field)
2109 node_output.append(val)
2110 output.append(node_output)
2115 class LUQueryNodeVolumes(NoHooksLU):
2116 """Logical unit for getting volumes on node(s).
2119 _OP_REQP = ["nodes", "output_fields"]
2121 _FIELDS_DYNAMIC = utils.FieldSet("phys", "vg", "name", "size", "instance")
2122 _FIELDS_STATIC = utils.FieldSet("node")
2124 def ExpandNames(self):
2125 _CheckOutputFields(static=self._FIELDS_STATIC,
2126 dynamic=self._FIELDS_DYNAMIC,
2127 selected=self.op.output_fields)
2129 self.needed_locks = {}
2130 self.share_locks[locking.LEVEL_NODE] = 1
2131 if not self.op.nodes:
2132 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
2134 self.needed_locks[locking.LEVEL_NODE] = \
2135 _GetWantedNodes(self, self.op.nodes)
2137 def CheckPrereq(self):
2138 """Check prerequisites.
2140 This checks that the fields required are valid output fields.
2143 self.nodes = self.acquired_locks[locking.LEVEL_NODE]
2145 def Exec(self, feedback_fn):
2146 """Computes the list of nodes and their attributes.
2149 nodenames = self.nodes
2150 volumes = self.rpc.call_node_volumes(nodenames)
2152 ilist = [self.cfg.GetInstanceInfo(iname) for iname
2153 in self.cfg.GetInstanceList()]
2155 lv_by_node = dict([(inst, inst.MapLVsByNode()) for inst in ilist])
2158 for node in nodenames:
2159 nresult = volumes[node]
2162 msg = nresult.fail_msg
2164 self.LogWarning("Can't compute volume data on node %s: %s", node, msg)
2167 node_vols = nresult.payload[:]
2168 node_vols.sort(key=lambda vol: vol['dev'])
2170 for vol in node_vols:
2172 for field in self.op.output_fields:
2175 elif field == "phys":
2179 elif field == "name":
2181 elif field == "size":
2182 val = int(float(vol['size']))
2183 elif field == "instance":
2185 if node not in lv_by_node[inst]:
2187 if vol['name'] in lv_by_node[inst][node]:
2193 raise errors.ParameterError(field)
2194 node_output.append(str(val))
2196 output.append(node_output)
2201 class LUAddNode(LogicalUnit):
2202 """Logical unit for adding node to the cluster.
2206 HTYPE = constants.HTYPE_NODE
2207 _OP_REQP = ["node_name"]
2209 def BuildHooksEnv(self):
2212 This will run on all nodes before, and on all nodes + the new node after.
2216 "OP_TARGET": self.op.node_name,
2217 "NODE_NAME": self.op.node_name,
2218 "NODE_PIP": self.op.primary_ip,
2219 "NODE_SIP": self.op.secondary_ip,
2221 nodes_0 = self.cfg.GetNodeList()
2222 nodes_1 = nodes_0 + [self.op.node_name, ]
2223 return env, nodes_0, nodes_1
2225 def CheckPrereq(self):
2226 """Check prerequisites.
2229 - the new node is not already in the config
2231 - its parameters (single/dual homed) matches the cluster
2233 Any errors are signalled by raising errors.OpPrereqError.
2236 node_name = self.op.node_name
2239 dns_data = utils.HostInfo(node_name)
2241 node = dns_data.name
2242 primary_ip = self.op.primary_ip = dns_data.ip
2243 secondary_ip = getattr(self.op, "secondary_ip", None)
2244 if secondary_ip is None:
2245 secondary_ip = primary_ip
2246 if not utils.IsValidIP(secondary_ip):
2247 raise errors.OpPrereqError("Invalid secondary IP given")
2248 self.op.secondary_ip = secondary_ip
2250 node_list = cfg.GetNodeList()
2251 if not self.op.readd and node in node_list:
2252 raise errors.OpPrereqError("Node %s is already in the configuration" %
2254 elif self.op.readd and node not in node_list:
2255 raise errors.OpPrereqError("Node %s is not in the configuration" % node)
2257 for existing_node_name in node_list:
2258 existing_node = cfg.GetNodeInfo(existing_node_name)
2260 if self.op.readd and node == existing_node_name:
2261 if (existing_node.primary_ip != primary_ip or
2262 existing_node.secondary_ip != secondary_ip):
2263 raise errors.OpPrereqError("Readded node doesn't have the same IP"
2264 " address configuration as before")
2267 if (existing_node.primary_ip == primary_ip or
2268 existing_node.secondary_ip == primary_ip or
2269 existing_node.primary_ip == secondary_ip or
2270 existing_node.secondary_ip == secondary_ip):
2271 raise errors.OpPrereqError("New node ip address(es) conflict with"
2272 " existing node %s" % existing_node.name)
2274 # check that the type of the node (single versus dual homed) is the
2275 # same as for the master
2276 myself = cfg.GetNodeInfo(self.cfg.GetMasterNode())
2277 master_singlehomed = myself.secondary_ip == myself.primary_ip
2278 newbie_singlehomed = secondary_ip == primary_ip
2279 if master_singlehomed != newbie_singlehomed:
2280 if master_singlehomed:
2281 raise errors.OpPrereqError("The master has no private ip but the"
2282 " new node has one")
2284 raise errors.OpPrereqError("The master has a private ip but the"
2285 " new node doesn't have one")
2287 # checks reachablity
2288 if not utils.TcpPing(primary_ip, constants.DEFAULT_NODED_PORT):
2289 raise errors.OpPrereqError("Node not reachable by ping")
2291 if not newbie_singlehomed:
2292 # check reachability from my secondary ip to newbie's secondary ip
2293 if not utils.TcpPing(secondary_ip, constants.DEFAULT_NODED_PORT,
2294 source=myself.secondary_ip):
2295 raise errors.OpPrereqError("Node secondary ip not reachable by TCP"
2296 " based ping to noded port")
2298 cp_size = self.cfg.GetClusterInfo().candidate_pool_size
2299 mc_now, _ = self.cfg.GetMasterCandidateStats()
2300 master_candidate = mc_now < cp_size
2302 self.new_node = objects.Node(name=node,
2303 primary_ip=primary_ip,
2304 secondary_ip=secondary_ip,
2305 master_candidate=master_candidate,
2306 offline=False, drained=False)
2308 def Exec(self, feedback_fn):
2309 """Adds the new node to the cluster.
2312 new_node = self.new_node
2313 node = new_node.name
2315 # check connectivity
2316 result = self.rpc.call_version([node])[node]
2317 result.Raise("Can't get version information from node %s" % node)
2318 if constants.PROTOCOL_VERSION == result.payload:
2319 logging.info("Communication to node %s fine, sw version %s match",
2320 node, result.payload)
2322 raise errors.OpExecError("Version mismatch master version %s,"
2323 " node version %s" %
2324 (constants.PROTOCOL_VERSION, result.payload))
2327 logging.info("Copy ssh key to node %s", node)
2328 priv_key, pub_key, _ = ssh.GetUserFiles(constants.GANETI_RUNAS)
2330 keyfiles = [constants.SSH_HOST_DSA_PRIV, constants.SSH_HOST_DSA_PUB,
2331 constants.SSH_HOST_RSA_PRIV, constants.SSH_HOST_RSA_PUB,
2337 keyarray.append(f.read())
2341 result = self.rpc.call_node_add(node, keyarray[0], keyarray[1],
2343 keyarray[3], keyarray[4], keyarray[5])
2344 result.Raise("Cannot transfer ssh keys to the new node")
2346 # Add node to our /etc/hosts, and add key to known_hosts
2347 if self.cfg.GetClusterInfo().modify_etc_hosts:
2348 utils.AddHostToEtcHosts(new_node.name)
2350 if new_node.secondary_ip != new_node.primary_ip:
2351 result = self.rpc.call_node_has_ip_address(new_node.name,
2352 new_node.secondary_ip)
2353 result.Raise("Failure checking secondary ip on node %s" % new_node.name,
2355 if not result.payload:
2356 raise errors.OpExecError("Node claims it doesn't have the secondary ip"
2357 " you gave (%s). Please fix and re-run this"
2358 " command." % new_node.secondary_ip)
2360 node_verify_list = [self.cfg.GetMasterNode()]
2361 node_verify_param = {
2363 # TODO: do a node-net-test as well?
2366 result = self.rpc.call_node_verify(node_verify_list, node_verify_param,
2367 self.cfg.GetClusterName())
2368 for verifier in node_verify_list:
2369 result[verifier].Raise("Cannot communicate with node %s" % verifier)
2370 nl_payload = result[verifier].payload['nodelist']
2372 for failed in nl_payload:
2373 feedback_fn("ssh/hostname verification failed %s -> %s" %
2374 (verifier, nl_payload[failed]))
2375 raise errors.OpExecError("ssh/hostname verification failed.")
2378 _RedistributeAncillaryFiles(self)
2379 self.context.ReaddNode(new_node)
2381 _RedistributeAncillaryFiles(self, additional_nodes=[node])
2382 self.context.AddNode(new_node)
2385 class LUSetNodeParams(LogicalUnit):
2386 """Modifies the parameters of a node.
2389 HPATH = "node-modify"
2390 HTYPE = constants.HTYPE_NODE
2391 _OP_REQP = ["node_name"]
2394 def CheckArguments(self):
2395 node_name = self.cfg.ExpandNodeName(self.op.node_name)
2396 if node_name is None:
2397 raise errors.OpPrereqError("Invalid node name '%s'" % self.op.node_name)
2398 self.op.node_name = node_name
2399 _CheckBooleanOpField(self.op, 'master_candidate')
2400 _CheckBooleanOpField(self.op, 'offline')
2401 _CheckBooleanOpField(self.op, 'drained')
2402 all_mods = [self.op.offline, self.op.master_candidate, self.op.drained]
2403 if all_mods.count(None) == 3:
2404 raise errors.OpPrereqError("Please pass at least one modification")
2405 if all_mods.count(True) > 1:
2406 raise errors.OpPrereqError("Can't set the node into more than one"
2407 " state at the same time")
2409 def ExpandNames(self):
2410 self.needed_locks = {locking.LEVEL_NODE: self.op.node_name}
2412 def BuildHooksEnv(self):
2415 This runs on the master node.
2419 "OP_TARGET": self.op.node_name,
2420 "MASTER_CANDIDATE": str(self.op.master_candidate),
2421 "OFFLINE": str(self.op.offline),
2422 "DRAINED": str(self.op.drained),
2424 nl = [self.cfg.GetMasterNode(),
2428 def CheckPrereq(self):
2429 """Check prerequisites.
2431 This only checks the instance list against the existing names.
2434 node = self.node = self.cfg.GetNodeInfo(self.op.node_name)
2436 if ((self.op.master_candidate == False or self.op.offline == True or
2437 self.op.drained == True) and node.master_candidate):
2438 # we will demote the node from master_candidate
2439 if self.op.node_name == self.cfg.GetMasterNode():
2440 raise errors.OpPrereqError("The master node has to be a"
2441 " master candidate, online and not drained")
2442 cp_size = self.cfg.GetClusterInfo().candidate_pool_size
2443 num_candidates, _ = self.cfg.GetMasterCandidateStats()
2444 if num_candidates <= cp_size:
2445 msg = ("Not enough master candidates (desired"
2446 " %d, new value will be %d)" % (cp_size, num_candidates-1))
2448 self.LogWarning(msg)
2450 raise errors.OpPrereqError(msg)
2452 if (self.op.master_candidate == True and
2453 ((node.offline and not self.op.offline == False) or
2454 (node.drained and not self.op.drained == False))):
2455 raise errors.OpPrereqError("Node '%s' is offline or drained, can't set"
2456 " to master_candidate" % node.name)
2460 def Exec(self, feedback_fn):
2469 if self.op.offline is not None:
2470 node.offline = self.op.offline
2471 result.append(("offline", str(self.op.offline)))
2472 if self.op.offline == True:
2473 if node.master_candidate:
2474 node.master_candidate = False
2476 result.append(("master_candidate", "auto-demotion due to offline"))
2478 node.drained = False
2479 result.append(("drained", "clear drained status due to offline"))
2481 if self.op.master_candidate is not None:
2482 node.master_candidate = self.op.master_candidate
2484 result.append(("master_candidate", str(self.op.master_candidate)))
2485 if self.op.master_candidate == False:
2486 rrc = self.rpc.call_node_demote_from_mc(node.name)
2489 self.LogWarning("Node failed to demote itself: %s" % msg)
2491 if self.op.drained is not None:
2492 node.drained = self.op.drained
2493 result.append(("drained", str(self.op.drained)))
2494 if self.op.drained == True:
2495 if node.master_candidate:
2496 node.master_candidate = False
2498 result.append(("master_candidate", "auto-demotion due to drain"))
2500 node.offline = False
2501 result.append(("offline", "clear offline status due to drain"))
2503 # this will trigger configuration file update, if needed
2504 self.cfg.Update(node)
2505 # this will trigger job queue propagation or cleanup
2507 self.context.ReaddNode(node)
2512 class LUPowercycleNode(NoHooksLU):
2513 """Powercycles a node.
2516 _OP_REQP = ["node_name", "force"]
2519 def CheckArguments(self):
2520 node_name = self.cfg.ExpandNodeName(self.op.node_name)
2521 if node_name is None:
2522 raise errors.OpPrereqError("Invalid node name '%s'" % self.op.node_name)
2523 self.op.node_name = node_name
2524 if node_name == self.cfg.GetMasterNode() and not self.op.force:
2525 raise errors.OpPrereqError("The node is the master and the force"
2526 " parameter was not set")
2528 def ExpandNames(self):
2529 """Locking for PowercycleNode.
2531 This is a last-resource option and shouldn't block on other
2532 jobs. Therefore, we grab no locks.
2535 self.needed_locks = {}
2537 def CheckPrereq(self):
2538 """Check prerequisites.
2540 This LU has no prereqs.
2545 def Exec(self, feedback_fn):
2549 result = self.rpc.call_node_powercycle(self.op.node_name,
2550 self.cfg.GetHypervisorType())
2551 result.Raise("Failed to schedule the reboot")
2552 return result.payload
2555 class LUQueryClusterInfo(NoHooksLU):
2556 """Query cluster configuration.
2562 def ExpandNames(self):
2563 self.needed_locks = {}
2565 def CheckPrereq(self):
2566 """No prerequsites needed for this LU.
2571 def Exec(self, feedback_fn):
2572 """Return cluster config.
2575 cluster = self.cfg.GetClusterInfo()
2577 "software_version": constants.RELEASE_VERSION,
2578 "protocol_version": constants.PROTOCOL_VERSION,
2579 "config_version": constants.CONFIG_VERSION,
2580 "os_api_version": constants.OS_API_VERSION,
2581 "export_version": constants.EXPORT_VERSION,
2582 "architecture": (platform.architecture()[0], platform.machine()),
2583 "name": cluster.cluster_name,
2584 "master": cluster.master_node,
2585 "default_hypervisor": cluster.default_hypervisor,
2586 "enabled_hypervisors": cluster.enabled_hypervisors,
2587 "hvparams": dict([(hvname, cluster.hvparams[hvname])
2588 for hvname in cluster.enabled_hypervisors]),
2589 "beparams": cluster.beparams,
2590 "nicparams": cluster.nicparams,
2591 "candidate_pool_size": cluster.candidate_pool_size,
2592 "master_netdev": cluster.master_netdev,
2593 "volume_group_name": cluster.volume_group_name,
2594 "file_storage_dir": cluster.file_storage_dir,
2600 class LUQueryConfigValues(NoHooksLU):
2601 """Return configuration values.
2606 _FIELDS_DYNAMIC = utils.FieldSet()
2607 _FIELDS_STATIC = utils.FieldSet("cluster_name", "master_node", "drain_flag")
2609 def ExpandNames(self):
2610 self.needed_locks = {}
2612 _CheckOutputFields(static=self._FIELDS_STATIC,
2613 dynamic=self._FIELDS_DYNAMIC,
2614 selected=self.op.output_fields)
2616 def CheckPrereq(self):
2617 """No prerequisites.
2622 def Exec(self, feedback_fn):
2623 """Dump a representation of the cluster config to the standard output.
2627 for field in self.op.output_fields:
2628 if field == "cluster_name":
2629 entry = self.cfg.GetClusterName()
2630 elif field == "master_node":
2631 entry = self.cfg.GetMasterNode()
2632 elif field == "drain_flag":
2633 entry = os.path.exists(constants.JOB_QUEUE_DRAIN_FILE)
2635 raise errors.ParameterError(field)
2636 values.append(entry)
2640 class LUActivateInstanceDisks(NoHooksLU):
2641 """Bring up an instance's disks.
2644 _OP_REQP = ["instance_name"]
2647 def ExpandNames(self):
2648 self._ExpandAndLockInstance()
2649 self.needed_locks[locking.LEVEL_NODE] = []
2650 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
2652 def DeclareLocks(self, level):
2653 if level == locking.LEVEL_NODE:
2654 self._LockInstancesNodes()
2656 def CheckPrereq(self):
2657 """Check prerequisites.
2659 This checks that the instance is in the cluster.
2662 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2663 assert self.instance is not None, \
2664 "Cannot retrieve locked instance %s" % self.op.instance_name
2665 _CheckNodeOnline(self, self.instance.primary_node)
2667 def Exec(self, feedback_fn):
2668 """Activate the disks.
2671 disks_ok, disks_info = _AssembleInstanceDisks(self, self.instance)
2673 raise errors.OpExecError("Cannot activate block devices")
2678 def _AssembleInstanceDisks(lu, instance, ignore_secondaries=False):
2679 """Prepare the block devices for an instance.
2681 This sets up the block devices on all nodes.
2683 @type lu: L{LogicalUnit}
2684 @param lu: the logical unit on whose behalf we execute
2685 @type instance: L{objects.Instance}
2686 @param instance: the instance for whose disks we assemble
2687 @type ignore_secondaries: boolean
2688 @param ignore_secondaries: if true, errors on secondary nodes
2689 won't result in an error return from the function
2690 @return: False if the operation failed, otherwise a list of
2691 (host, instance_visible_name, node_visible_name)
2692 with the mapping from node devices to instance devices
2697 iname = instance.name
2698 # With the two passes mechanism we try to reduce the window of
2699 # opportunity for the race condition of switching DRBD to primary
2700 # before handshaking occured, but we do not eliminate it
2702 # The proper fix would be to wait (with some limits) until the
2703 # connection has been made and drbd transitions from WFConnection
2704 # into any other network-connected state (Connected, SyncTarget,
2707 # 1st pass, assemble on all nodes in secondary mode
2708 for inst_disk in instance.disks:
2709 for node, node_disk in inst_disk.ComputeNodeTree(instance.primary_node):
2710 lu.cfg.SetDiskID(node_disk, node)
2711 result = lu.rpc.call_blockdev_assemble(node, node_disk, iname, False)
2712 msg = result.fail_msg
2714 lu.proc.LogWarning("Could not prepare block device %s on node %s"
2715 " (is_primary=False, pass=1): %s",
2716 inst_disk.iv_name, node, msg)
2717 if not ignore_secondaries:
2720 # FIXME: race condition on drbd migration to primary
2722 # 2nd pass, do only the primary node
2723 for inst_disk in instance.disks:
2724 for node, node_disk in inst_disk.ComputeNodeTree(instance.primary_node):
2725 if node != instance.primary_node:
2727 lu.cfg.SetDiskID(node_disk, node)
2728 result = lu.rpc.call_blockdev_assemble(node, node_disk, iname, True)
2729 msg = result.fail_msg
2731 lu.proc.LogWarning("Could not prepare block device %s on node %s"
2732 " (is_primary=True, pass=2): %s",
2733 inst_disk.iv_name, node, msg)
2735 device_info.append((instance.primary_node, inst_disk.iv_name,
2738 # leave the disks configured for the primary node
2739 # this is a workaround that would be fixed better by
2740 # improving the logical/physical id handling
2741 for disk in instance.disks:
2742 lu.cfg.SetDiskID(disk, instance.primary_node)
2744 return disks_ok, device_info
2747 def _StartInstanceDisks(lu, instance, force):
2748 """Start the disks of an instance.
2751 disks_ok, dummy = _AssembleInstanceDisks(lu, instance,
2752 ignore_secondaries=force)
2754 _ShutdownInstanceDisks(lu, instance)
2755 if force is not None and not force:
2756 lu.proc.LogWarning("", hint="If the message above refers to a"
2758 " you can retry the operation using '--force'.")
2759 raise errors.OpExecError("Disk consistency error")
2762 class LUDeactivateInstanceDisks(NoHooksLU):
2763 """Shutdown an instance's disks.
2766 _OP_REQP = ["instance_name"]
2769 def ExpandNames(self):
2770 self._ExpandAndLockInstance()
2771 self.needed_locks[locking.LEVEL_NODE] = []
2772 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
2774 def DeclareLocks(self, level):
2775 if level == locking.LEVEL_NODE:
2776 self._LockInstancesNodes()
2778 def CheckPrereq(self):
2779 """Check prerequisites.
2781 This checks that the instance is in the cluster.
2784 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2785 assert self.instance is not None, \
2786 "Cannot retrieve locked instance %s" % self.op.instance_name
2788 def Exec(self, feedback_fn):
2789 """Deactivate the disks
2792 instance = self.instance
2793 _SafeShutdownInstanceDisks(self, instance)
2796 def _SafeShutdownInstanceDisks(lu, instance):
2797 """Shutdown block devices of an instance.
2799 This function checks if an instance is running, before calling
2800 _ShutdownInstanceDisks.
2803 pnode = instance.primary_node
2804 ins_l = lu.rpc.call_instance_list([pnode], [instance.hypervisor])[pnode]
2805 ins_l.Raise("Can't contact node %s" % pnode)
2807 if instance.name in ins_l.payload:
2808 raise errors.OpExecError("Instance is running, can't shutdown"
2811 _ShutdownInstanceDisks(lu, instance)
2814 def _ShutdownInstanceDisks(lu, instance, ignore_primary=False):
2815 """Shutdown block devices of an instance.
2817 This does the shutdown on all nodes of the instance.
2819 If the ignore_primary is false, errors on the primary node are
2824 for disk in instance.disks:
2825 for node, top_disk in disk.ComputeNodeTree(instance.primary_node):
2826 lu.cfg.SetDiskID(top_disk, node)
2827 result = lu.rpc.call_blockdev_shutdown(node, top_disk)
2828 msg = result.fail_msg
2830 lu.LogWarning("Could not shutdown block device %s on node %s: %s",
2831 disk.iv_name, node, msg)
2832 if not ignore_primary or node != instance.primary_node:
2837 def _CheckNodeFreeMemory(lu, node, reason, requested, hypervisor_name):
2838 """Checks if a node has enough free memory.
2840 This function check if a given node has the needed amount of free
2841 memory. In case the node has less memory or we cannot get the
2842 information from the node, this function raise an OpPrereqError
2845 @type lu: C{LogicalUnit}
2846 @param lu: a logical unit from which we get configuration data
2848 @param node: the node to check
2849 @type reason: C{str}
2850 @param reason: string to use in the error message
2851 @type requested: C{int}
2852 @param requested: the amount of memory in MiB to check for
2853 @type hypervisor_name: C{str}
2854 @param hypervisor_name: the hypervisor to ask for memory stats
2855 @raise errors.OpPrereqError: if the node doesn't have enough memory, or
2856 we cannot check the node
2859 nodeinfo = lu.rpc.call_node_info([node], lu.cfg.GetVGName(), hypervisor_name)
2860 nodeinfo[node].Raise("Can't get data from node %s" % node, prereq=True)
2861 free_mem = nodeinfo[node].payload.get('memory_free', None)
2862 if not isinstance(free_mem, int):
2863 raise errors.OpPrereqError("Can't compute free memory on node %s, result"
2864 " was '%s'" % (node, free_mem))
2865 if requested > free_mem:
2866 raise errors.OpPrereqError("Not enough memory on node %s for %s:"
2867 " needed %s MiB, available %s MiB" %
2868 (node, reason, requested, free_mem))
2871 class LUStartupInstance(LogicalUnit):
2872 """Starts an instance.
2875 HPATH = "instance-start"
2876 HTYPE = constants.HTYPE_INSTANCE
2877 _OP_REQP = ["instance_name", "force"]
2880 def ExpandNames(self):
2881 self._ExpandAndLockInstance()
2883 def BuildHooksEnv(self):
2886 This runs on master, primary and secondary nodes of the instance.
2890 "FORCE": self.op.force,
2892 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
2893 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
2896 def CheckPrereq(self):
2897 """Check prerequisites.
2899 This checks that the instance is in the cluster.
2902 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2903 assert self.instance is not None, \
2904 "Cannot retrieve locked instance %s" % self.op.instance_name
2907 self.beparams = getattr(self.op, "beparams", {})
2909 if not isinstance(self.beparams, dict):
2910 raise errors.OpPrereqError("Invalid beparams passed: %s, expected"
2911 " dict" % (type(self.beparams), ))
2912 # fill the beparams dict
2913 utils.ForceDictType(self.beparams, constants.BES_PARAMETER_TYPES)
2914 self.op.beparams = self.beparams
2917 self.hvparams = getattr(self.op, "hvparams", {})
2919 if not isinstance(self.hvparams, dict):
2920 raise errors.OpPrereqError("Invalid hvparams passed: %s, expected"
2921 " dict" % (type(self.hvparams), ))
2923 # check hypervisor parameter syntax (locally)
2924 cluster = self.cfg.GetClusterInfo()
2925 utils.ForceDictType(self.hvparams, constants.HVS_PARAMETER_TYPES)
2926 filled_hvp = objects.FillDict(cluster.hvparams[instance.hypervisor],
2928 filled_hvp.update(self.hvparams)
2929 hv_type = hypervisor.GetHypervisor(instance.hypervisor)
2930 hv_type.CheckParameterSyntax(filled_hvp)
2931 _CheckHVParams(self, instance.all_nodes, instance.hypervisor, filled_hvp)
2932 self.op.hvparams = self.hvparams
2934 _CheckNodeOnline(self, instance.primary_node)
2936 bep = self.cfg.GetClusterInfo().FillBE(instance)
2937 # check bridges existance
2938 _CheckInstanceBridgesExist(self, instance)
2940 remote_info = self.rpc.call_instance_info(instance.primary_node,
2942 instance.hypervisor)
2943 remote_info.Raise("Error checking node %s" % instance.primary_node,
2945 if not remote_info.payload: # not running already
2946 _CheckNodeFreeMemory(self, instance.primary_node,
2947 "starting instance %s" % instance.name,
2948 bep[constants.BE_MEMORY], instance.hypervisor)
2950 def Exec(self, feedback_fn):
2951 """Start the instance.
2954 instance = self.instance
2955 force = self.op.force
2957 self.cfg.MarkInstanceUp(instance.name)
2959 node_current = instance.primary_node
2961 _StartInstanceDisks(self, instance, force)
2963 result = self.rpc.call_instance_start(node_current, instance,
2964 self.hvparams, self.beparams)
2965 msg = result.fail_msg
2967 _ShutdownInstanceDisks(self, instance)
2968 raise errors.OpExecError("Could not start instance: %s" % msg)
2971 class LURebootInstance(LogicalUnit):
2972 """Reboot an instance.
2975 HPATH = "instance-reboot"
2976 HTYPE = constants.HTYPE_INSTANCE
2977 _OP_REQP = ["instance_name", "ignore_secondaries", "reboot_type"]
2980 def ExpandNames(self):
2981 if self.op.reboot_type not in [constants.INSTANCE_REBOOT_SOFT,
2982 constants.INSTANCE_REBOOT_HARD,
2983 constants.INSTANCE_REBOOT_FULL]:
2984 raise errors.ParameterError("reboot type not in [%s, %s, %s]" %
2985 (constants.INSTANCE_REBOOT_SOFT,
2986 constants.INSTANCE_REBOOT_HARD,
2987 constants.INSTANCE_REBOOT_FULL))
2988 self._ExpandAndLockInstance()
2990 def BuildHooksEnv(self):
2993 This runs on master, primary and secondary nodes of the instance.
2997 "IGNORE_SECONDARIES": self.op.ignore_secondaries,
2998 "REBOOT_TYPE": self.op.reboot_type,
3000 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
3001 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
3004 def CheckPrereq(self):
3005 """Check prerequisites.
3007 This checks that the instance is in the cluster.
3010 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3011 assert self.instance is not None, \
3012 "Cannot retrieve locked instance %s" % self.op.instance_name
3014 _CheckNodeOnline(self, instance.primary_node)
3016 # check bridges existance
3017 _CheckInstanceBridgesExist(self, instance)
3019 def Exec(self, feedback_fn):
3020 """Reboot the instance.
3023 instance = self.instance
3024 ignore_secondaries = self.op.ignore_secondaries
3025 reboot_type = self.op.reboot_type
3027 node_current = instance.primary_node
3029 if reboot_type in [constants.INSTANCE_REBOOT_SOFT,
3030 constants.INSTANCE_REBOOT_HARD]:
3031 for disk in instance.disks:
3032 self.cfg.SetDiskID(disk, node_current)
3033 result = self.rpc.call_instance_reboot(node_current, instance,
3035 result.Raise("Could not reboot instance")
3037 result = self.rpc.call_instance_shutdown(node_current, instance)
3038 result.Raise("Could not shutdown instance for full reboot")
3039 _ShutdownInstanceDisks(self, instance)
3040 _StartInstanceDisks(self, instance, ignore_secondaries)
3041 result = self.rpc.call_instance_start(node_current, instance, None, None)
3042 msg = result.fail_msg
3044 _ShutdownInstanceDisks(self, instance)
3045 raise errors.OpExecError("Could not start instance for"
3046 " full reboot: %s" % msg)
3048 self.cfg.MarkInstanceUp(instance.name)
3051 class LUShutdownInstance(LogicalUnit):
3052 """Shutdown an instance.
3055 HPATH = "instance-stop"
3056 HTYPE = constants.HTYPE_INSTANCE
3057 _OP_REQP = ["instance_name"]
3060 def ExpandNames(self):
3061 self._ExpandAndLockInstance()
3063 def BuildHooksEnv(self):
3066 This runs on master, primary and secondary nodes of the instance.
3069 env = _BuildInstanceHookEnvByObject(self, self.instance)
3070 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
3073 def CheckPrereq(self):
3074 """Check prerequisites.
3076 This checks that the instance is in the cluster.
3079 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3080 assert self.instance is not None, \
3081 "Cannot retrieve locked instance %s" % self.op.instance_name
3082 _CheckNodeOnline(self, self.instance.primary_node)
3084 def Exec(self, feedback_fn):
3085 """Shutdown the instance.
3088 instance = self.instance
3089 node_current = instance.primary_node
3090 self.cfg.MarkInstanceDown(instance.name)
3091 result = self.rpc.call_instance_shutdown(node_current, instance)
3092 msg = result.fail_msg
3094 self.proc.LogWarning("Could not shutdown instance: %s" % msg)
3096 _ShutdownInstanceDisks(self, instance)
3099 class LUReinstallInstance(LogicalUnit):
3100 """Reinstall an instance.
3103 HPATH = "instance-reinstall"
3104 HTYPE = constants.HTYPE_INSTANCE
3105 _OP_REQP = ["instance_name"]
3108 def ExpandNames(self):
3109 self._ExpandAndLockInstance()
3111 def BuildHooksEnv(self):
3114 This runs on master, primary and secondary nodes of the instance.
3117 env = _BuildInstanceHookEnvByObject(self, self.instance)
3118 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
3121 def CheckPrereq(self):
3122 """Check prerequisites.
3124 This checks that the instance is in the cluster and is not running.
3127 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3128 assert instance is not None, \
3129 "Cannot retrieve locked instance %s" % self.op.instance_name
3130 _CheckNodeOnline(self, instance.primary_node)
3132 if instance.disk_template == constants.DT_DISKLESS:
3133 raise errors.OpPrereqError("Instance '%s' has no disks" %
3134 self.op.instance_name)
3135 if instance.admin_up:
3136 raise errors.OpPrereqError("Instance '%s' is marked to be up" %
3137 self.op.instance_name)
3138 remote_info = self.rpc.call_instance_info(instance.primary_node,
3140 instance.hypervisor)
3141 remote_info.Raise("Error checking node %s" % instance.primary_node,
3143 if remote_info.payload:
3144 raise errors.OpPrereqError("Instance '%s' is running on the node %s" %
3145 (self.op.instance_name,
3146 instance.primary_node))
3148 self.op.os_type = getattr(self.op, "os_type", None)
3149 if self.op.os_type is not None:
3151 pnode = self.cfg.GetNodeInfo(
3152 self.cfg.ExpandNodeName(instance.primary_node))
3154 raise errors.OpPrereqError("Primary node '%s' is unknown" %
3156 result = self.rpc.call_os_get(pnode.name, self.op.os_type)
3157 result.Raise("OS '%s' not in supported OS list for primary node %s" %
3158 (self.op.os_type, pnode.name), prereq=True)
3160 self.instance = instance
3162 def Exec(self, feedback_fn):
3163 """Reinstall the instance.
3166 inst = self.instance
3168 if self.op.os_type is not None:
3169 feedback_fn("Changing OS to '%s'..." % self.op.os_type)
3170 inst.os = self.op.os_type
3171 self.cfg.Update(inst)
3173 _StartInstanceDisks(self, inst, None)
3175 feedback_fn("Running the instance OS create scripts...")
3176 result = self.rpc.call_instance_os_add(inst.primary_node, inst, True)
3177 result.Raise("Could not install OS for instance %s on node %s" %
3178 (inst.name, inst.primary_node))
3180 _ShutdownInstanceDisks(self, inst)
3183 class LURenameInstance(LogicalUnit):
3184 """Rename an instance.
3187 HPATH = "instance-rename"
3188 HTYPE = constants.HTYPE_INSTANCE
3189 _OP_REQP = ["instance_name", "new_name"]
3191 def BuildHooksEnv(self):
3194 This runs on master, primary and secondary nodes of the instance.
3197 env = _BuildInstanceHookEnvByObject(self, self.instance)
3198 env["INSTANCE_NEW_NAME"] = self.op.new_name
3199 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
3202 def CheckPrereq(self):
3203 """Check prerequisites.
3205 This checks that the instance is in the cluster and is not running.
3208 instance = self.cfg.GetInstanceInfo(
3209 self.cfg.ExpandInstanceName(self.op.instance_name))
3210 if instance is None:
3211 raise errors.OpPrereqError("Instance '%s' not known" %
3212 self.op.instance_name)
3213 _CheckNodeOnline(self, instance.primary_node)
3215 if instance.admin_up:
3216 raise errors.OpPrereqError("Instance '%s' is marked to be up" %
3217 self.op.instance_name)
3218 remote_info = self.rpc.call_instance_info(instance.primary_node,
3220 instance.hypervisor)
3221 remote_info.Raise("Error checking node %s" % instance.primary_node,
3223 if remote_info.payload:
3224 raise errors.OpPrereqError("Instance '%s' is running on the node %s" %
3225 (self.op.instance_name,
3226 instance.primary_node))
3227 self.instance = instance
3229 # new name verification
3230 name_info = utils.HostInfo(self.op.new_name)
3232 self.op.new_name = new_name = name_info.name
3233 instance_list = self.cfg.GetInstanceList()
3234 if new_name in instance_list:
3235 raise errors.OpPrereqError("Instance '%s' is already in the cluster" %
3238 if not getattr(self.op, "ignore_ip", False):
3239 if utils.TcpPing(name_info.ip, constants.DEFAULT_NODED_PORT):
3240 raise errors.OpPrereqError("IP %s of instance %s already in use" %
3241 (name_info.ip, new_name))
3244 def Exec(self, feedback_fn):
3245 """Reinstall the instance.
3248 inst = self.instance
3249 old_name = inst.name
3251 if inst.disk_template == constants.DT_FILE:
3252 old_file_storage_dir = os.path.dirname(inst.disks[0].logical_id[1])
3254 self.cfg.RenameInstance(inst.name, self.op.new_name)
3255 # Change the instance lock. This is definitely safe while we hold the BGL
3256 self.context.glm.remove(locking.LEVEL_INSTANCE, old_name)
3257 self.context.glm.add(locking.LEVEL_INSTANCE, self.op.new_name)
3259 # re-read the instance from the configuration after rename
3260 inst = self.cfg.GetInstanceInfo(self.op.new_name)
3262 if inst.disk_template == constants.DT_FILE:
3263 new_file_storage_dir = os.path.dirname(inst.disks[0].logical_id[1])
3264 result = self.rpc.call_file_storage_dir_rename(inst.primary_node,
3265 old_file_storage_dir,
3266 new_file_storage_dir)
3267 result.Raise("Could not rename on node %s directory '%s' to '%s'"
3268 " (but the instance has been renamed in Ganeti)" %
3269 (inst.primary_node, old_file_storage_dir,
3270 new_file_storage_dir))
3272 _StartInstanceDisks(self, inst, None)
3274 result = self.rpc.call_instance_run_rename(inst.primary_node, inst,
3276 msg = result.fail_msg
3278 msg = ("Could not run OS rename script for instance %s on node %s"
3279 " (but the instance has been renamed in Ganeti): %s" %
3280 (inst.name, inst.primary_node, msg))
3281 self.proc.LogWarning(msg)
3283 _ShutdownInstanceDisks(self, inst)
3286 class LURemoveInstance(LogicalUnit):
3287 """Remove an instance.
3290 HPATH = "instance-remove"
3291 HTYPE = constants.HTYPE_INSTANCE
3292 _OP_REQP = ["instance_name", "ignore_failures"]
3295 def ExpandNames(self):
3296 self._ExpandAndLockInstance()
3297 self.needed_locks[locking.LEVEL_NODE] = []
3298 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3300 def DeclareLocks(self, level):
3301 if level == locking.LEVEL_NODE:
3302 self._LockInstancesNodes()
3304 def BuildHooksEnv(self):
3307 This runs on master, primary and secondary nodes of the instance.
3310 env = _BuildInstanceHookEnvByObject(self, self.instance)
3311 nl = [self.cfg.GetMasterNode()]
3314 def CheckPrereq(self):
3315 """Check prerequisites.
3317 This checks that the instance is in the cluster.
3320 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3321 assert self.instance is not None, \
3322 "Cannot retrieve locked instance %s" % self.op.instance_name
3324 def Exec(self, feedback_fn):
3325 """Remove the instance.
3328 instance = self.instance
3329 logging.info("Shutting down instance %s on node %s",
3330 instance.name, instance.primary_node)
3332 result = self.rpc.call_instance_shutdown(instance.primary_node, instance)
3333 msg = result.fail_msg
3335 if self.op.ignore_failures:
3336 feedback_fn("Warning: can't shutdown instance: %s" % msg)
3338 raise errors.OpExecError("Could not shutdown instance %s on"
3340 (instance.name, instance.primary_node, msg))
3342 logging.info("Removing block devices for instance %s", instance.name)
3344 if not _RemoveDisks(self, instance):
3345 if self.op.ignore_failures:
3346 feedback_fn("Warning: can't remove instance's disks")
3348 raise errors.OpExecError("Can't remove instance's disks")
3350 logging.info("Removing instance %s out of cluster config", instance.name)
3352 self.cfg.RemoveInstance(instance.name)
3353 self.remove_locks[locking.LEVEL_INSTANCE] = instance.name
3356 class LUQueryInstances(NoHooksLU):
3357 """Logical unit for querying instances.
3360 _OP_REQP = ["output_fields", "names", "use_locking"]
3362 _FIELDS_STATIC = utils.FieldSet(*["name", "os", "pnode", "snodes",
3364 "disk_template", "ip", "mac", "bridge",
3365 "nic_mode", "nic_link",
3366 "sda_size", "sdb_size", "vcpus", "tags",
3367 "network_port", "beparams",
3368 r"(disk)\.(size)/([0-9]+)",
3369 r"(disk)\.(sizes)", "disk_usage",
3370 r"(nic)\.(mac|ip|mode|link)/([0-9]+)",
3371 r"(nic)\.(bridge)/([0-9]+)",
3372 r"(nic)\.(macs|ips|modes|links|bridges)",
3373 r"(disk|nic)\.(count)",
3374 "serial_no", "hypervisor", "hvparams",] +
3376 for name in constants.HVS_PARAMETERS] +
3378 for name in constants.BES_PARAMETERS])
3379 _FIELDS_DYNAMIC = utils.FieldSet("oper_state", "oper_ram", "status")
3382 def ExpandNames(self):
3383 _CheckOutputFields(static=self._FIELDS_STATIC,
3384 dynamic=self._FIELDS_DYNAMIC,
3385 selected=self.op.output_fields)
3387 self.needed_locks = {}
3388 self.share_locks[locking.LEVEL_INSTANCE] = 1
3389 self.share_locks[locking.LEVEL_NODE] = 1
3392 self.wanted = _GetWantedInstances(self, self.op.names)
3394 self.wanted = locking.ALL_SET
3396 self.do_node_query = self._FIELDS_STATIC.NonMatching(self.op.output_fields)
3397 self.do_locking = self.do_node_query and self.op.use_locking
3399 self.needed_locks[locking.LEVEL_INSTANCE] = self.wanted
3400 self.needed_locks[locking.LEVEL_NODE] = []
3401 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3403 def DeclareLocks(self, level):
3404 if level == locking.LEVEL_NODE and self.do_locking:
3405 self._LockInstancesNodes()
3407 def CheckPrereq(self):
3408 """Check prerequisites.
3413 def Exec(self, feedback_fn):
3414 """Computes the list of nodes and their attributes.
3417 all_info = self.cfg.GetAllInstancesInfo()
3418 if self.wanted == locking.ALL_SET:
3419 # caller didn't specify instance names, so ordering is not important
3421 instance_names = self.acquired_locks[locking.LEVEL_INSTANCE]
3423 instance_names = all_info.keys()
3424 instance_names = utils.NiceSort(instance_names)
3426 # caller did specify names, so we must keep the ordering
3428 tgt_set = self.acquired_locks[locking.LEVEL_INSTANCE]
3430 tgt_set = all_info.keys()
3431 missing = set(self.wanted).difference(tgt_set)
3433 raise errors.OpExecError("Some instances were removed before"
3434 " retrieving their data: %s" % missing)
3435 instance_names = self.wanted
3437 instance_list = [all_info[iname] for iname in instance_names]
3439 # begin data gathering
3441 nodes = frozenset([inst.primary_node for inst in instance_list])
3442 hv_list = list(set([inst.hypervisor for inst in instance_list]))
3446 if self.do_node_query:
3448 node_data = self.rpc.call_all_instances_info(nodes, hv_list)
3450 result = node_data[name]
3452 # offline nodes will be in both lists
3453 off_nodes.append(name)
3454 if result.failed or result.fail_msg:
3455 bad_nodes.append(name)
3458 live_data.update(result.payload)
3459 # else no instance is alive
3461 live_data = dict([(name, {}) for name in instance_names])
3463 # end data gathering
3468 cluster = self.cfg.GetClusterInfo()
3469 for instance in instance_list:
3471 i_hv = cluster.FillHV(instance)
3472 i_be = cluster.FillBE(instance)
3473 i_nicp = [objects.FillDict(cluster.nicparams[constants.PP_DEFAULT],
3474 nic.nicparams) for nic in instance.nics]
3475 for field in self.op.output_fields:
3476 st_match = self._FIELDS_STATIC.Matches(field)
3481 elif field == "pnode":
3482 val = instance.primary_node
3483 elif field == "snodes":
3484 val = list(instance.secondary_nodes)
3485 elif field == "admin_state":
3486 val = instance.admin_up
3487 elif field == "oper_state":
3488 if instance.primary_node in bad_nodes:
3491 val = bool(live_data.get(instance.name))
3492 elif field == "status":
3493 if instance.primary_node in off_nodes:
3494 val = "ERROR_nodeoffline"
3495 elif instance.primary_node in bad_nodes:
3496 val = "ERROR_nodedown"
3498 running = bool(live_data.get(instance.name))
3500 if instance.admin_up:
3505 if instance.admin_up:
3509 elif field == "oper_ram":
3510 if instance.primary_node in bad_nodes:
3512 elif instance.name in live_data:
3513 val = live_data[instance.name].get("memory", "?")
3516 elif field == "disk_template":
3517 val = instance.disk_template
3520 val = instance.nics[0].ip
3523 elif field == "nic_mode":
3525 val = i_nicp[0][constants.NIC_MODE]
3528 elif field == "nic_link":
3530 val = i_nicp[0][constants.NIC_LINK]
3533 elif field == "bridge":
3534 if (instance.nics and
3535 i_nicp[0][constants.NIC_MODE] == constants.NIC_MODE_BRIDGED):
3536 val = i_nicp[0][constants.NIC_LINK]
3539 elif field == "mac":
3541 val = instance.nics[0].mac
3544 elif field == "sda_size" or field == "sdb_size":
3545 idx = ord(field[2]) - ord('a')
3547 val = instance.FindDisk(idx).size
3548 except errors.OpPrereqError:
3550 elif field == "disk_usage": # total disk usage per node
3551 disk_sizes = [{'size': disk.size} for disk in instance.disks]
3552 val = _ComputeDiskSize(instance.disk_template, disk_sizes)
3553 elif field == "tags":
3554 val = list(instance.GetTags())
3555 elif field == "serial_no":
3556 val = instance.serial_no
3557 elif field == "network_port":
3558 val = instance.network_port
3559 elif field == "hypervisor":
3560 val = instance.hypervisor
3561 elif field == "hvparams":
3563 elif (field.startswith(HVPREFIX) and
3564 field[len(HVPREFIX):] in constants.HVS_PARAMETERS):
3565 val = i_hv.get(field[len(HVPREFIX):], None)
3566 elif field == "beparams":
3568 elif (field.startswith(BEPREFIX) and
3569 field[len(BEPREFIX):] in constants.BES_PARAMETERS):
3570 val = i_be.get(field[len(BEPREFIX):], None)
3571 elif st_match and st_match.groups():
3572 # matches a variable list
3573 st_groups = st_match.groups()
3574 if st_groups and st_groups[0] == "disk":
3575 if st_groups[1] == "count":
3576 val = len(instance.disks)
3577 elif st_groups[1] == "sizes":
3578 val = [disk.size for disk in instance.disks]
3579 elif st_groups[1] == "size":
3581 val = instance.FindDisk(st_groups[2]).size
3582 except errors.OpPrereqError:
3585 assert False, "Unhandled disk parameter"
3586 elif st_groups[0] == "nic":
3587 if st_groups[1] == "count":
3588 val = len(instance.nics)
3589 elif st_groups[1] == "macs":
3590 val = [nic.mac for nic in instance.nics]
3591 elif st_groups[1] == "ips":
3592 val = [nic.ip for nic in instance.nics]
3593 elif st_groups[1] == "modes":
3594 val = [nicp[constants.NIC_MODE] for nicp in i_nicp]
3595 elif st_groups[1] == "links":
3596 val = [nicp[constants.NIC_LINK] for nicp in i_nicp]
3597 elif st_groups[1] == "bridges":
3600 if nicp[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
3601 val.append(nicp[constants.NIC_LINK])
3606 nic_idx = int(st_groups[2])
3607 if nic_idx >= len(instance.nics):
3610 if st_groups[1] == "mac":
3611 val = instance.nics[nic_idx].mac
3612 elif st_groups[1] == "ip":
3613 val = instance.nics[nic_idx].ip
3614 elif st_groups[1] == "mode":
3615 val = i_nicp[nic_idx][constants.NIC_MODE]
3616 elif st_groups[1] == "link":
3617 val = i_nicp[nic_idx][constants.NIC_LINK]
3618 elif st_groups[1] == "bridge":
3619 nic_mode = i_nicp[nic_idx][constants.NIC_MODE]
3620 if nic_mode == constants.NIC_MODE_BRIDGED:
3621 val = i_nicp[nic_idx][constants.NIC_LINK]
3625 assert False, "Unhandled NIC parameter"
3627 assert False, "Unhandled variable parameter"
3629 raise errors.ParameterError(field)
3636 class LUFailoverInstance(LogicalUnit):
3637 """Failover an instance.
3640 HPATH = "instance-failover"
3641 HTYPE = constants.HTYPE_INSTANCE
3642 _OP_REQP = ["instance_name", "ignore_consistency"]
3645 def ExpandNames(self):
3646 self._ExpandAndLockInstance()
3647 self.needed_locks[locking.LEVEL_NODE] = []
3648 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3650 def DeclareLocks(self, level):
3651 if level == locking.LEVEL_NODE:
3652 self._LockInstancesNodes()
3654 def BuildHooksEnv(self):
3657 This runs on master, primary and secondary nodes of the instance.
3661 "IGNORE_CONSISTENCY": self.op.ignore_consistency,
3663 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
3664 nl = [self.cfg.GetMasterNode()] + list(self.instance.secondary_nodes)
3667 def CheckPrereq(self):
3668 """Check prerequisites.
3670 This checks that the instance is in the cluster.
3673 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3674 assert self.instance is not None, \
3675 "Cannot retrieve locked instance %s" % self.op.instance_name
3677 bep = self.cfg.GetClusterInfo().FillBE(instance)
3678 if instance.disk_template not in constants.DTS_NET_MIRROR:
3679 raise errors.OpPrereqError("Instance's disk layout is not"
3680 " network mirrored, cannot failover.")
3682 secondary_nodes = instance.secondary_nodes
3683 if not secondary_nodes:
3684 raise errors.ProgrammerError("no secondary node but using "
3685 "a mirrored disk template")
3687 target_node = secondary_nodes[0]
3688 _CheckNodeOnline(self, target_node)
3689 _CheckNodeNotDrained(self, target_node)
3690 if instance.admin_up:
3691 # check memory requirements on the secondary node
3692 _CheckNodeFreeMemory(self, target_node, "failing over instance %s" %
3693 instance.name, bep[constants.BE_MEMORY],
3694 instance.hypervisor)
3696 self.LogInfo("Not checking memory on the secondary node as"
3697 " instance will not be started")
3699 # check bridge existance
3700 _CheckInstanceBridgesExist(self, instance, node=target_node)
3702 def Exec(self, feedback_fn):
3703 """Failover an instance.
3705 The failover is done by shutting it down on its present node and
3706 starting it on the secondary.
3709 instance = self.instance
3711 source_node = instance.primary_node
3712 target_node = instance.secondary_nodes[0]
3714 feedback_fn("* checking disk consistency between source and target")
3715 for dev in instance.disks:
3716 # for drbd, these are drbd over lvm
3717 if not _CheckDiskConsistency(self, dev, target_node, False):
3718 if instance.admin_up and not self.op.ignore_consistency:
3719 raise errors.OpExecError("Disk %s is degraded on target node,"
3720 " aborting failover." % dev.iv_name)
3722 feedback_fn("* shutting down instance on source node")
3723 logging.info("Shutting down instance %s on node %s",
3724 instance.name, source_node)
3726 result = self.rpc.call_instance_shutdown(source_node, instance)
3727 msg = result.fail_msg
3729 if self.op.ignore_consistency:
3730 self.proc.LogWarning("Could not shutdown instance %s on node %s."
3731 " Proceeding anyway. Please make sure node"
3732 " %s is down. Error details: %s",
3733 instance.name, source_node, source_node, msg)
3735 raise errors.OpExecError("Could not shutdown instance %s on"
3737 (instance.name, source_node, msg))
3739 feedback_fn("* deactivating the instance's disks on source node")
3740 if not _ShutdownInstanceDisks(self, instance, ignore_primary=True):
3741 raise errors.OpExecError("Can't shut down the instance's disks.")
3743 instance.primary_node = target_node
3744 # distribute new instance config to the other nodes
3745 self.cfg.Update(instance)
3747 # Only start the instance if it's marked as up
3748 if instance.admin_up:
3749 feedback_fn("* activating the instance's disks on target node")
3750 logging.info("Starting instance %s on node %s",
3751 instance.name, target_node)
3753 disks_ok, dummy = _AssembleInstanceDisks(self, instance,
3754 ignore_secondaries=True)
3756 _ShutdownInstanceDisks(self, instance)
3757 raise errors.OpExecError("Can't activate the instance's disks")
3759 feedback_fn("* starting the instance on the target node")
3760 result = self.rpc.call_instance_start(target_node, instance, None, None)
3761 msg = result.fail_msg
3763 _ShutdownInstanceDisks(self, instance)
3764 raise errors.OpExecError("Could not start instance %s on node %s: %s" %
3765 (instance.name, target_node, msg))
3768 class LUMigrateInstance(LogicalUnit):
3769 """Migrate an instance.
3771 This is migration without shutting down, compared to the failover,
3772 which is done with shutdown.
3775 HPATH = "instance-migrate"
3776 HTYPE = constants.HTYPE_INSTANCE
3777 _OP_REQP = ["instance_name", "live", "cleanup"]
3781 def ExpandNames(self):
3782 self._ExpandAndLockInstance()
3783 self.needed_locks[locking.LEVEL_NODE] = []
3784 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3786 def DeclareLocks(self, level):
3787 if level == locking.LEVEL_NODE:
3788 self._LockInstancesNodes()
3790 def BuildHooksEnv(self):
3793 This runs on master, primary and secondary nodes of the instance.
3796 env = _BuildInstanceHookEnvByObject(self, self.instance)
3797 env["MIGRATE_LIVE"] = self.op.live
3798 env["MIGRATE_CLEANUP"] = self.op.cleanup
3799 nl = [self.cfg.GetMasterNode()] + list(self.instance.secondary_nodes)
3802 def CheckPrereq(self):
3803 """Check prerequisites.
3805 This checks that the instance is in the cluster.
3808 instance = self.cfg.GetInstanceInfo(
3809 self.cfg.ExpandInstanceName(self.op.instance_name))
3810 if instance is None:
3811 raise errors.OpPrereqError("Instance '%s' not known" %
3812 self.op.instance_name)
3814 if instance.disk_template != constants.DT_DRBD8:
3815 raise errors.OpPrereqError("Instance's disk layout is not"
3816 " drbd8, cannot migrate.")
3818 secondary_nodes = instance.secondary_nodes
3819 if not secondary_nodes:
3820 raise errors.ConfigurationError("No secondary node but using"
3821 " drbd8 disk template")
3823 i_be = self.cfg.GetClusterInfo().FillBE(instance)
3825 target_node = secondary_nodes[0]
3826 # check memory requirements on the secondary node
3827 _CheckNodeFreeMemory(self, target_node, "migrating instance %s" %
3828 instance.name, i_be[constants.BE_MEMORY],
3829 instance.hypervisor)
3831 # check bridge existance
3832 _CheckInstanceBridgesExist(self, instance, node=target_node)
3834 if not self.op.cleanup:
3835 _CheckNodeNotDrained(self, target_node)
3836 result = self.rpc.call_instance_migratable(instance.primary_node,
3838 result.Raise("Can't migrate, please use failover", prereq=True)
3840 self.instance = instance
3842 def _WaitUntilSync(self):
3843 """Poll with custom rpc for disk sync.
3845 This uses our own step-based rpc call.
3848 self.feedback_fn("* wait until resync is done")
3852 result = self.rpc.call_drbd_wait_sync(self.all_nodes,
3854 self.instance.disks)
3856 for node, nres in result.items():
3857 nres.Raise("Cannot resync disks on node %s" % node)
3858 node_done, node_percent = nres.payload
3859 all_done = all_done and node_done
3860 if node_percent is not None:
3861 min_percent = min(min_percent, node_percent)
3863 if min_percent < 100:
3864 self.feedback_fn(" - progress: %.1f%%" % min_percent)
3867 def _EnsureSecondary(self, node):
3868 """Demote a node to secondary.
3871 self.feedback_fn("* switching node %s to secondary mode" % node)
3873 for dev in self.instance.disks:
3874 self.cfg.SetDiskID(dev, node)
3876 result = self.rpc.call_blockdev_close(node, self.instance.name,
3877 self.instance.disks)
3878 result.Raise("Cannot change disk to secondary on node %s" % node)
3880 def _GoStandalone(self):
3881 """Disconnect from the network.
3884 self.feedback_fn("* changing into standalone mode")
3885 result = self.rpc.call_drbd_disconnect_net(self.all_nodes, self.nodes_ip,
3886 self.instance.disks)
3887 for node, nres in result.items():
3888 nres.Raise("Cannot disconnect disks node %s" % node)
3890 def _GoReconnect(self, multimaster):
3891 """Reconnect to the network.
3897 msg = "single-master"
3898 self.feedback_fn("* changing disks into %s mode" % msg)
3899 result = self.rpc.call_drbd_attach_net(self.all_nodes, self.nodes_ip,
3900 self.instance.disks,
3901 self.instance.name, multimaster)
3902 for node, nres in result.items():
3903 nres.Raise("Cannot change disks config on node %s" % node)
3905 def _ExecCleanup(self):
3906 """Try to cleanup after a failed migration.
3908 The cleanup is done by:
3909 - check that the instance is running only on one node
3910 (and update the config if needed)
3911 - change disks on its secondary node to secondary
3912 - wait until disks are fully synchronized
3913 - disconnect from the network
3914 - change disks into single-master mode
3915 - wait again until disks are fully synchronized
3918 instance = self.instance
3919 target_node = self.target_node
3920 source_node = self.source_node
3922 # check running on only one node
3923 self.feedback_fn("* checking where the instance actually runs"
3924 " (if this hangs, the hypervisor might be in"
3926 ins_l = self.rpc.call_instance_list(self.all_nodes, [instance.hypervisor])
3927 for node, result in ins_l.items():
3928 result.Raise("Can't contact node %s" % node)
3930 runningon_source = instance.name in ins_l[source_node].payload
3931 runningon_target = instance.name in ins_l[target_node].payload
3933 if runningon_source and runningon_target:
3934 raise errors.OpExecError("Instance seems to be running on two nodes,"
3935 " or the hypervisor is confused. You will have"
3936 " to ensure manually that it runs only on one"
3937 " and restart this operation.")
3939 if not (runningon_source or runningon_target):
3940 raise errors.OpExecError("Instance does not seem to be running at all."
3941 " In this case, it's safer to repair by"
3942 " running 'gnt-instance stop' to ensure disk"
3943 " shutdown, and then restarting it.")
3945 if runningon_target:
3946 # the migration has actually succeeded, we need to update the config
3947 self.feedback_fn("* instance running on secondary node (%s),"
3948 " updating config" % target_node)
3949 instance.primary_node = target_node
3950 self.cfg.Update(instance)
3951 demoted_node = source_node
3953 self.feedback_fn("* instance confirmed to be running on its"
3954 " primary node (%s)" % source_node)
3955 demoted_node = target_node
3957 self._EnsureSecondary(demoted_node)
3959 self._WaitUntilSync()
3960 except errors.OpExecError:
3961 # we ignore here errors, since if the device is standalone, it
3962 # won't be able to sync
3964 self._GoStandalone()
3965 self._GoReconnect(False)
3966 self._WaitUntilSync()
3968 self.feedback_fn("* done")
3970 def _RevertDiskStatus(self):
3971 """Try to revert the disk status after a failed migration.
3974 target_node = self.target_node
3976 self._EnsureSecondary(target_node)
3977 self._GoStandalone()
3978 self._GoReconnect(False)
3979 self._WaitUntilSync()
3980 except errors.OpExecError, err:
3981 self.LogWarning("Migration failed and I can't reconnect the"
3982 " drives: error '%s'\n"
3983 "Please look and recover the instance status" %
3986 def _AbortMigration(self):
3987 """Call the hypervisor code to abort a started migration.
3990 instance = self.instance
3991 target_node = self.target_node
3992 migration_info = self.migration_info
3994 abort_result = self.rpc.call_finalize_migration(target_node,
3998 abort_msg = abort_result.fail_msg
4000 logging.error("Aborting migration failed on target node %s: %s" %
4001 (target_node, abort_msg))
4002 # Don't raise an exception here, as we stil have to try to revert the
4003 # disk status, even if this step failed.
4005 def _ExecMigration(self):
4006 """Migrate an instance.
4008 The migrate is done by:
4009 - change the disks into dual-master mode
4010 - wait until disks are fully synchronized again
4011 - migrate the instance
4012 - change disks on the new secondary node (the old primary) to secondary
4013 - wait until disks are fully synchronized
4014 - change disks into single-master mode
4017 instance = self.instance
4018 target_node = self.target_node
4019 source_node = self.source_node
4021 self.feedback_fn("* checking disk consistency between source and target")
4022 for dev in instance.disks:
4023 if not _CheckDiskConsistency(self, dev, target_node, False):
4024 raise errors.OpExecError("Disk %s is degraded or not fully"
4025 " synchronized on target node,"
4026 " aborting migrate." % dev.iv_name)
4028 # First get the migration information from the remote node
4029 result = self.rpc.call_migration_info(source_node, instance)
4030 msg = result.fail_msg
4032 log_err = ("Failed fetching source migration information from %s: %s" %
4034 logging.error(log_err)
4035 raise errors.OpExecError(log_err)
4037 self.migration_info = migration_info = result.payload
4039 # Then switch the disks to master/master mode
4040 self._EnsureSecondary(target_node)
4041 self._GoStandalone()
4042 self._GoReconnect(True)
4043 self._WaitUntilSync()
4045 self.feedback_fn("* preparing %s to accept the instance" % target_node)
4046 result = self.rpc.call_accept_instance(target_node,
4049 self.nodes_ip[target_node])
4051 msg = result.fail_msg
4053 logging.error("Instance pre-migration failed, trying to revert"
4054 " disk status: %s", msg)
4055 self._AbortMigration()
4056 self._RevertDiskStatus()
4057 raise errors.OpExecError("Could not pre-migrate instance %s: %s" %
4058 (instance.name, msg))
4060 self.feedback_fn("* migrating instance to %s" % target_node)
4062 result = self.rpc.call_instance_migrate(source_node, instance,
4063 self.nodes_ip[target_node],
4065 msg = result.fail_msg
4067 logging.error("Instance migration failed, trying to revert"
4068 " disk status: %s", msg)
4069 self._AbortMigration()
4070 self._RevertDiskStatus()
4071 raise errors.OpExecError("Could not migrate instance %s: %s" %
4072 (instance.name, msg))
4075 instance.primary_node = target_node
4076 # distribute new instance config to the other nodes
4077 self.cfg.Update(instance)
4079 result = self.rpc.call_finalize_migration(target_node,
4083 msg = result.fail_msg
4085 logging.error("Instance migration succeeded, but finalization failed:"
4087 raise errors.OpExecError("Could not finalize instance migration: %s" %
4090 self._EnsureSecondary(source_node)
4091 self._WaitUntilSync()
4092 self._GoStandalone()
4093 self._GoReconnect(False)
4094 self._WaitUntilSync()
4096 self.feedback_fn("* done")
4098 def Exec(self, feedback_fn):
4099 """Perform the migration.
4102 self.feedback_fn = feedback_fn
4104 self.source_node = self.instance.primary_node
4105 self.target_node = self.instance.secondary_nodes[0]
4106 self.all_nodes = [self.source_node, self.target_node]
4108 self.source_node: self.cfg.GetNodeInfo(self.source_node).secondary_ip,
4109 self.target_node: self.cfg.GetNodeInfo(self.target_node).secondary_ip,
4112 return self._ExecCleanup()
4114 return self._ExecMigration()
4117 def _CreateBlockDev(lu, node, instance, device, force_create,
4119 """Create a tree of block devices on a given node.
4121 If this device type has to be created on secondaries, create it and
4124 If not, just recurse to children keeping the same 'force' value.
4126 @param lu: the lu on whose behalf we execute
4127 @param node: the node on which to create the device
4128 @type instance: L{objects.Instance}
4129 @param instance: the instance which owns the device
4130 @type device: L{objects.Disk}
4131 @param device: the device to create
4132 @type force_create: boolean
4133 @param force_create: whether to force creation of this device; this
4134 will be change to True whenever we find a device which has
4135 CreateOnSecondary() attribute
4136 @param info: the extra 'metadata' we should attach to the device
4137 (this will be represented as a LVM tag)
4138 @type force_open: boolean
4139 @param force_open: this parameter will be passes to the
4140 L{backend.BlockdevCreate} function where it specifies
4141 whether we run on primary or not, and it affects both
4142 the child assembly and the device own Open() execution
4145 if device.CreateOnSecondary():
4149 for child in device.children:
4150 _CreateBlockDev(lu, node, instance, child, force_create,
4153 if not force_create:
4156 _CreateSingleBlockDev(lu, node, instance, device, info, force_open)
4159 def _CreateSingleBlockDev(lu, node, instance, device, info, force_open):
4160 """Create a single block device on a given node.
4162 This will not recurse over children of the device, so they must be
4165 @param lu: the lu on whose behalf we execute
4166 @param node: the node on which to create the device
4167 @type instance: L{objects.Instance}
4168 @param instance: the instance which owns the device
4169 @type device: L{objects.Disk}
4170 @param device: the device to create
4171 @param info: the extra 'metadata' we should attach to the device
4172 (this will be represented as a LVM tag)
4173 @type force_open: boolean
4174 @param force_open: this parameter will be passes to the
4175 L{backend.BlockdevCreate} function where it specifies
4176 whether we run on primary or not, and it affects both
4177 the child assembly and the device own Open() execution
4180 lu.cfg.SetDiskID(device, node)
4181 result = lu.rpc.call_blockdev_create(node, device, device.size,
4182 instance.name, force_open, info)
4183 result.Raise("Can't create block device %s on"
4184 " node %s for instance %s" % (device, node, instance.name))
4185 if device.physical_id is None:
4186 device.physical_id = result.payload
4189 def _GenerateUniqueNames(lu, exts):
4190 """Generate a suitable LV name.
4192 This will generate a logical volume name for the given instance.
4197 new_id = lu.cfg.GenerateUniqueID()
4198 results.append("%s%s" % (new_id, val))
4202 def _GenerateDRBD8Branch(lu, primary, secondary, size, names, iv_name,
4204 """Generate a drbd8 device complete with its children.
4207 port = lu.cfg.AllocatePort()
4208 vgname = lu.cfg.GetVGName()
4209 shared_secret = lu.cfg.GenerateDRBDSecret()
4210 dev_data = objects.Disk(dev_type=constants.LD_LV, size=size,
4211 logical_id=(vgname, names[0]))
4212 dev_meta = objects.Disk(dev_type=constants.LD_LV, size=128,
4213 logical_id=(vgname, names[1]))
4214 drbd_dev = objects.Disk(dev_type=constants.LD_DRBD8, size=size,
4215 logical_id=(primary, secondary, port,
4218 children=[dev_data, dev_meta],
4223 def _GenerateDiskTemplate(lu, template_name,
4224 instance_name, primary_node,
4225 secondary_nodes, disk_info,
4226 file_storage_dir, file_driver,
4228 """Generate the entire disk layout for a given template type.
4231 #TODO: compute space requirements
4233 vgname = lu.cfg.GetVGName()
4234 disk_count = len(disk_info)
4236 if template_name == constants.DT_DISKLESS:
4238 elif template_name == constants.DT_PLAIN:
4239 if len(secondary_nodes) != 0:
4240 raise errors.ProgrammerError("Wrong template configuration")
4242 names = _GenerateUniqueNames(lu, [".disk%d" % i
4243 for i in range(disk_count)])
4244 for idx, disk in enumerate(disk_info):
4245 disk_index = idx + base_index
4246 disk_dev = objects.Disk(dev_type=constants.LD_LV, size=disk["size"],
4247 logical_id=(vgname, names[idx]),
4248 iv_name="disk/%d" % disk_index,
4250 disks.append(disk_dev)
4251 elif template_name == constants.DT_DRBD8:
4252 if len(secondary_nodes) != 1:
4253 raise errors.ProgrammerError("Wrong template configuration")
4254 remote_node = secondary_nodes[0]
4255 minors = lu.cfg.AllocateDRBDMinor(
4256 [primary_node, remote_node] * len(disk_info), instance_name)
4259 for lv_prefix in _GenerateUniqueNames(lu, [".disk%d" % i
4260 for i in range(disk_count)]):
4261 names.append(lv_prefix + "_data")
4262 names.append(lv_prefix + "_meta")
4263 for idx, disk in enumerate(disk_info):
4264 disk_index = idx + base_index
4265 disk_dev = _GenerateDRBD8Branch(lu, primary_node, remote_node,
4266 disk["size"], names[idx*2:idx*2+2],
4267 "disk/%d" % disk_index,
4268 minors[idx*2], minors[idx*2+1])
4269 disk_dev.mode = disk["mode"]
4270 disks.append(disk_dev)
4271 elif template_name == constants.DT_FILE:
4272 if len(secondary_nodes) != 0:
4273 raise errors.ProgrammerError("Wrong template configuration")
4275 for idx, disk in enumerate(disk_info):
4276 disk_index = idx + base_index
4277 disk_dev = objects.Disk(dev_type=constants.LD_FILE, size=disk["size"],
4278 iv_name="disk/%d" % disk_index,
4279 logical_id=(file_driver,
4280 "%s/disk%d" % (file_storage_dir,
4283 disks.append(disk_dev)
4285 raise errors.ProgrammerError("Invalid disk template '%s'" % template_name)
4289 def _GetInstanceInfoText(instance):
4290 """Compute that text that should be added to the disk's metadata.
4293 return "originstname+%s" % instance.name
4296 def _CreateDisks(lu, instance):
4297 """Create all disks for an instance.
4299 This abstracts away some work from AddInstance.
4301 @type lu: L{LogicalUnit}
4302 @param lu: the logical unit on whose behalf we execute
4303 @type instance: L{objects.Instance}
4304 @param instance: the instance whose disks we should create
4306 @return: the success of the creation
4309 info = _GetInstanceInfoText(instance)
4310 pnode = instance.primary_node
4312 if instance.disk_template == constants.DT_FILE:
4313 file_storage_dir = os.path.dirname(instance.disks[0].logical_id[1])
4314 result = lu.rpc.call_file_storage_dir_create(pnode, file_storage_dir)
4316 result.Raise("Failed to create directory '%s' on"
4317 " node %s: %s" % (file_storage_dir, pnode))
4319 # Note: this needs to be kept in sync with adding of disks in
4320 # LUSetInstanceParams
4321 for device in instance.disks:
4322 logging.info("Creating volume %s for instance %s",
4323 device.iv_name, instance.name)
4325 for node in instance.all_nodes:
4326 f_create = node == pnode
4327 _CreateBlockDev(lu, node, instance, device, f_create, info, f_create)
4330 def _RemoveDisks(lu, instance):
4331 """Remove all disks for an instance.
4333 This abstracts away some work from `AddInstance()` and
4334 `RemoveInstance()`. Note that in case some of the devices couldn't
4335 be removed, the removal will continue with the other ones (compare
4336 with `_CreateDisks()`).
4338 @type lu: L{LogicalUnit}
4339 @param lu: the logical unit on whose behalf we execute
4340 @type instance: L{objects.Instance}
4341 @param instance: the instance whose disks we should remove
4343 @return: the success of the removal
4346 logging.info("Removing block devices for instance %s", instance.name)
4349 for device in instance.disks:
4350 for node, disk in device.ComputeNodeTree(instance.primary_node):
4351 lu.cfg.SetDiskID(disk, node)
4352 msg = lu.rpc.call_blockdev_remove(node, disk).fail_msg
4354 lu.LogWarning("Could not remove block device %s on node %s,"
4355 " continuing anyway: %s", device.iv_name, node, msg)
4358 if instance.disk_template == constants.DT_FILE:
4359 file_storage_dir = os.path.dirname(instance.disks[0].logical_id[1])
4360 result = lu.rpc.call_file_storage_dir_remove(instance.primary_node,
4362 msg = result.fail_msg
4364 lu.LogWarning("Could not remove directory '%s' on node %s: %s",
4365 file_storage_dir, instance.primary_node, msg)
4371 def _ComputeDiskSize(disk_template, disks):
4372 """Compute disk size requirements in the volume group
4375 # Required free disk space as a function of disk and swap space
4377 constants.DT_DISKLESS: None,
4378 constants.DT_PLAIN: sum(d["size"] for d in disks),
4379 # 128 MB are added for drbd metadata for each disk
4380 constants.DT_DRBD8: sum(d["size"] + 128 for d in disks),
4381 constants.DT_FILE: None,
4384 if disk_template not in req_size_dict:
4385 raise errors.ProgrammerError("Disk template '%s' size requirement"
4386 " is unknown" % disk_template)
4388 return req_size_dict[disk_template]
4391 def _CheckHVParams(lu, nodenames, hvname, hvparams):
4392 """Hypervisor parameter validation.
4394 This function abstract the hypervisor parameter validation to be
4395 used in both instance create and instance modify.
4397 @type lu: L{LogicalUnit}
4398 @param lu: the logical unit for which we check
4399 @type nodenames: list
4400 @param nodenames: the list of nodes on which we should check
4401 @type hvname: string
4402 @param hvname: the name of the hypervisor we should use
4403 @type hvparams: dict
4404 @param hvparams: the parameters which we need to check
4405 @raise errors.OpPrereqError: if the parameters are not valid
4408 hvinfo = lu.rpc.call_hypervisor_validate_params(nodenames,
4411 for node in nodenames:
4415 info.Raise("Hypervisor parameter validation failed on node %s" % node)
4418 class LUCreateInstance(LogicalUnit):
4419 """Create an instance.
4422 HPATH = "instance-add"
4423 HTYPE = constants.HTYPE_INSTANCE
4424 _OP_REQP = ["instance_name", "disks", "disk_template",
4426 "wait_for_sync", "ip_check", "nics",
4427 "hvparams", "beparams"]
4430 def _ExpandNode(self, node):
4431 """Expands and checks one node name.
4434 node_full = self.cfg.ExpandNodeName(node)
4435 if node_full is None:
4436 raise errors.OpPrereqError("Unknown node %s" % node)
4439 def ExpandNames(self):
4440 """ExpandNames for CreateInstance.
4442 Figure out the right locks for instance creation.
4445 self.needed_locks = {}
4447 # set optional parameters to none if they don't exist
4448 for attr in ["pnode", "snode", "iallocator", "hypervisor"]:
4449 if not hasattr(self.op, attr):
4450 setattr(self.op, attr, None)
4452 # cheap checks, mostly valid constants given
4454 # verify creation mode
4455 if self.op.mode not in (constants.INSTANCE_CREATE,
4456 constants.INSTANCE_IMPORT):
4457 raise errors.OpPrereqError("Invalid instance creation mode '%s'" %
4460 # disk template and mirror node verification
4461 if self.op.disk_template not in constants.DISK_TEMPLATES:
4462 raise errors.OpPrereqError("Invalid disk template name")
4464 if self.op.hypervisor is None:
4465 self.op.hypervisor = self.cfg.GetHypervisorType()
4467 cluster = self.cfg.GetClusterInfo()
4468 enabled_hvs = cluster.enabled_hypervisors
4469 if self.op.hypervisor not in enabled_hvs:
4470 raise errors.OpPrereqError("Selected hypervisor (%s) not enabled in the"
4471 " cluster (%s)" % (self.op.hypervisor,
4472 ",".join(enabled_hvs)))
4474 # check hypervisor parameter syntax (locally)
4475 utils.ForceDictType(self.op.hvparams, constants.HVS_PARAMETER_TYPES)
4476 filled_hvp = objects.FillDict(cluster.hvparams[self.op.hypervisor],
4478 hv_type = hypervisor.GetHypervisor(self.op.hypervisor)
4479 hv_type.CheckParameterSyntax(filled_hvp)
4480 self.hv_full = filled_hvp
4482 # fill and remember the beparams dict
4483 utils.ForceDictType(self.op.beparams, constants.BES_PARAMETER_TYPES)
4484 self.be_full = objects.FillDict(cluster.beparams[constants.PP_DEFAULT],
4487 #### instance parameters check
4489 # instance name verification
4490 hostname1 = utils.HostInfo(self.op.instance_name)
4491 self.op.instance_name = instance_name = hostname1.name
4493 # this is just a preventive check, but someone might still add this
4494 # instance in the meantime, and creation will fail at lock-add time
4495 if instance_name in self.cfg.GetInstanceList():
4496 raise errors.OpPrereqError("Instance '%s' is already in the cluster" %
4499 self.add_locks[locking.LEVEL_INSTANCE] = instance_name
4503 for idx, nic in enumerate(self.op.nics):
4504 nic_mode_req = nic.get("mode", None)
4505 nic_mode = nic_mode_req
4506 if nic_mode is None:
4507 nic_mode = cluster.nicparams[constants.PP_DEFAULT][constants.NIC_MODE]
4509 # in routed mode, for the first nic, the default ip is 'auto'
4510 if nic_mode == constants.NIC_MODE_ROUTED and idx == 0:
4511 default_ip_mode = constants.VALUE_AUTO
4513 default_ip_mode = constants.VALUE_NONE
4515 # ip validity checks
4516 ip = nic.get("ip", default_ip_mode)
4517 if ip is None or ip.lower() == constants.VALUE_NONE:
4519 elif ip.lower() == constants.VALUE_AUTO:
4520 nic_ip = hostname1.ip
4522 if not utils.IsValidIP(ip):
4523 raise errors.OpPrereqError("Given IP address '%s' doesn't look"
4524 " like a valid IP" % ip)
4527 # TODO: check the ip for uniqueness !!
4528 if nic_mode == constants.NIC_MODE_ROUTED and not nic_ip:
4529 raise errors.OpPrereqError("Routed nic mode requires an ip address")
4531 # MAC address verification
4532 mac = nic.get("mac", constants.VALUE_AUTO)
4533 if mac not in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
4534 if not utils.IsValidMac(mac.lower()):
4535 raise errors.OpPrereqError("Invalid MAC address specified: %s" %
4537 # bridge verification
4538 bridge = nic.get("bridge", None)
4539 link = nic.get("link", None)
4541 raise errors.OpPrereqError("Cannot pass 'bridge' and 'link'"
4542 " at the same time")
4543 elif bridge and nic_mode == constants.NIC_MODE_ROUTED:
4544 raise errors.OpPrereqError("Cannot pass 'bridge' on a routed nic")
4550 nicparams[constants.NIC_MODE] = nic_mode_req
4552 nicparams[constants.NIC_LINK] = link
4554 check_params = objects.FillDict(cluster.nicparams[constants.PP_DEFAULT],
4556 objects.NIC.CheckParameterSyntax(check_params)
4557 self.nics.append(objects.NIC(mac=mac, ip=nic_ip, nicparams=nicparams))
4559 # disk checks/pre-build
4561 for disk in self.op.disks:
4562 mode = disk.get("mode", constants.DISK_RDWR)
4563 if mode not in constants.DISK_ACCESS_SET:
4564 raise errors.OpPrereqError("Invalid disk access mode '%s'" %
4566 size = disk.get("size", None)
4568 raise errors.OpPrereqError("Missing disk size")
4572 raise errors.OpPrereqError("Invalid disk size '%s'" % size)
4573 self.disks.append({"size": size, "mode": mode})
4575 # used in CheckPrereq for ip ping check
4576 self.check_ip = hostname1.ip
4578 # file storage checks
4579 if (self.op.file_driver and
4580 not self.op.file_driver in constants.FILE_DRIVER):
4581 raise errors.OpPrereqError("Invalid file driver name '%s'" %
4582 self.op.file_driver)
4584 if self.op.file_storage_dir and os.path.isabs(self.op.file_storage_dir):
4585 raise errors.OpPrereqError("File storage directory path not absolute")
4587 ### Node/iallocator related checks
4588 if [self.op.iallocator, self.op.pnode].count(None) != 1:
4589 raise errors.OpPrereqError("One and only one of iallocator and primary"
4590 " node must be given")
4592 if self.op.iallocator:
4593 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
4595 self.op.pnode = self._ExpandNode(self.op.pnode)
4596 nodelist = [self.op.pnode]
4597 if self.op.snode is not None:
4598 self.op.snode = self._ExpandNode(self.op.snode)
4599 nodelist.append(self.op.snode)
4600 self.needed_locks[locking.LEVEL_NODE] = nodelist
4602 # in case of import lock the source node too
4603 if self.op.mode == constants.INSTANCE_IMPORT:
4604 src_node = getattr(self.op, "src_node", None)
4605 src_path = getattr(self.op, "src_path", None)
4607 if src_path is None:
4608 self.op.src_path = src_path = self.op.instance_name
4610 if src_node is None:
4611 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
4612 self.op.src_node = None
4613 if os.path.isabs(src_path):
4614 raise errors.OpPrereqError("Importing an instance from an absolute"
4615 " path requires a source node option.")
4617 self.op.src_node = src_node = self._ExpandNode(src_node)
4618 if self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET:
4619 self.needed_locks[locking.LEVEL_NODE].append(src_node)
4620 if not os.path.isabs(src_path):
4621 self.op.src_path = src_path = \
4622 os.path.join(constants.EXPORT_DIR, src_path)
4624 else: # INSTANCE_CREATE
4625 if getattr(self.op, "os_type", None) is None:
4626 raise errors.OpPrereqError("No guest OS specified")
4628 def _RunAllocator(self):
4629 """Run the allocator based on input opcode.
4632 nics = [n.ToDict() for n in self.nics]
4633 ial = IAllocator(self,
4634 mode=constants.IALLOCATOR_MODE_ALLOC,
4635 name=self.op.instance_name,
4636 disk_template=self.op.disk_template,
4639 vcpus=self.be_full[constants.BE_VCPUS],
4640 mem_size=self.be_full[constants.BE_MEMORY],
4643 hypervisor=self.op.hypervisor,
4646 ial.Run(self.op.iallocator)
4649 raise errors.OpPrereqError("Can't compute nodes using"
4650 " iallocator '%s': %s" % (self.op.iallocator,
4652 if len(ial.nodes) != ial.required_nodes:
4653 raise errors.OpPrereqError("iallocator '%s' returned invalid number"
4654 " of nodes (%s), required %s" %
4655 (self.op.iallocator, len(ial.nodes),
4656 ial.required_nodes))
4657 self.op.pnode = ial.nodes[0]
4658 self.LogInfo("Selected nodes for instance %s via iallocator %s: %s",
4659 self.op.instance_name, self.op.iallocator,
4660 ", ".join(ial.nodes))
4661 if ial.required_nodes == 2:
4662 self.op.snode = ial.nodes[1]
4664 def BuildHooksEnv(self):
4667 This runs on master, primary and secondary nodes of the instance.
4671 "ADD_MODE": self.op.mode,
4673 if self.op.mode == constants.INSTANCE_IMPORT:
4674 env["SRC_NODE"] = self.op.src_node
4675 env["SRC_PATH"] = self.op.src_path
4676 env["SRC_IMAGES"] = self.src_images
4678 env.update(_BuildInstanceHookEnv(
4679 name=self.op.instance_name,
4680 primary_node=self.op.pnode,
4681 secondary_nodes=self.secondaries,
4682 status=self.op.start,
4683 os_type=self.op.os_type,
4684 memory=self.be_full[constants.BE_MEMORY],
4685 vcpus=self.be_full[constants.BE_VCPUS],
4686 nics=_NICListToTuple(self, self.nics),
4687 disk_template=self.op.disk_template,
4688 disks=[(d["size"], d["mode"]) for d in self.disks],
4691 hypervisor=self.op.hypervisor,
4694 nl = ([self.cfg.GetMasterNode(), self.op.pnode] +
4699 def CheckPrereq(self):
4700 """Check prerequisites.
4703 if (not self.cfg.GetVGName() and
4704 self.op.disk_template not in constants.DTS_NOT_LVM):
4705 raise errors.OpPrereqError("Cluster does not support lvm-based"
4708 if self.op.mode == constants.INSTANCE_IMPORT:
4709 src_node = self.op.src_node
4710 src_path = self.op.src_path
4712 if src_node is None:
4713 locked_nodes = self.acquired_locks[locking.LEVEL_NODE]
4714 exp_list = self.rpc.call_export_list(locked_nodes)
4716 for node in exp_list:
4717 if exp_list[node].fail_msg:
4719 if src_path in exp_list[node].payload:
4721 self.op.src_node = src_node = node
4722 self.op.src_path = src_path = os.path.join(constants.EXPORT_DIR,
4726 raise errors.OpPrereqError("No export found for relative path %s" %
4729 _CheckNodeOnline(self, src_node)
4730 result = self.rpc.call_export_info(src_node, src_path)
4731 result.Raise("No export or invalid export found in dir %s" % src_path)
4733 export_info = objects.SerializableConfigParser.Loads(str(result.payload))
4734 if not export_info.has_section(constants.INISECT_EXP):
4735 raise errors.ProgrammerError("Corrupted export config")
4737 ei_version = export_info.get(constants.INISECT_EXP, 'version')
4738 if (int(ei_version) != constants.EXPORT_VERSION):
4739 raise errors.OpPrereqError("Wrong export version %s (wanted %d)" %
4740 (ei_version, constants.EXPORT_VERSION))
4742 # Check that the new instance doesn't have less disks than the export
4743 instance_disks = len(self.disks)
4744 export_disks = export_info.getint(constants.INISECT_INS, 'disk_count')
4745 if instance_disks < export_disks:
4746 raise errors.OpPrereqError("Not enough disks to import."
4747 " (instance: %d, export: %d)" %
4748 (instance_disks, export_disks))
4750 self.op.os_type = export_info.get(constants.INISECT_EXP, 'os')
4752 for idx in range(export_disks):
4753 option = 'disk%d_dump' % idx
4754 if export_info.has_option(constants.INISECT_INS, option):
4755 # FIXME: are the old os-es, disk sizes, etc. useful?
4756 export_name = export_info.get(constants.INISECT_INS, option)
4757 image = os.path.join(src_path, export_name)
4758 disk_images.append(image)
4760 disk_images.append(False)
4762 self.src_images = disk_images
4764 old_name = export_info.get(constants.INISECT_INS, 'name')
4765 # FIXME: int() here could throw a ValueError on broken exports
4766 exp_nic_count = int(export_info.get(constants.INISECT_INS, 'nic_count'))
4767 if self.op.instance_name == old_name:
4768 for idx, nic in enumerate(self.nics):
4769 if nic.mac == constants.VALUE_AUTO and exp_nic_count >= idx:
4770 nic_mac_ini = 'nic%d_mac' % idx
4771 nic.mac = export_info.get(constants.INISECT_INS, nic_mac_ini)
4773 # ENDIF: self.op.mode == constants.INSTANCE_IMPORT
4774 # ip ping checks (we use the same ip that was resolved in ExpandNames)
4775 if self.op.start and not self.op.ip_check:
4776 raise errors.OpPrereqError("Cannot ignore IP address conflicts when"
4777 " adding an instance in start mode")
4779 if self.op.ip_check:
4780 if utils.TcpPing(self.check_ip, constants.DEFAULT_NODED_PORT):
4781 raise errors.OpPrereqError("IP %s of instance %s already in use" %
4782 (self.check_ip, self.op.instance_name))
4784 #### mac address generation
4785 # By generating here the mac address both the allocator and the hooks get
4786 # the real final mac address rather than the 'auto' or 'generate' value.
4787 # There is a race condition between the generation and the instance object
4788 # creation, which means that we know the mac is valid now, but we're not
4789 # sure it will be when we actually add the instance. If things go bad
4790 # adding the instance will abort because of a duplicate mac, and the
4791 # creation job will fail.
4792 for nic in self.nics:
4793 if nic.mac in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
4794 nic.mac = self.cfg.GenerateMAC()
4798 if self.op.iallocator is not None:
4799 self._RunAllocator()
4801 #### node related checks
4803 # check primary node
4804 self.pnode = pnode = self.cfg.GetNodeInfo(self.op.pnode)
4805 assert self.pnode is not None, \
4806 "Cannot retrieve locked node %s" % self.op.pnode
4808 raise errors.OpPrereqError("Cannot use offline primary node '%s'" %
4811 raise errors.OpPrereqError("Cannot use drained primary node '%s'" %
4814 self.secondaries = []
4816 # mirror node verification
4817 if self.op.disk_template in constants.DTS_NET_MIRROR:
4818 if self.op.snode is None:
4819 raise errors.OpPrereqError("The networked disk templates need"
4821 if self.op.snode == pnode.name:
4822 raise errors.OpPrereqError("The secondary node cannot be"
4823 " the primary node.")
4824 _CheckNodeOnline(self, self.op.snode)
4825 _CheckNodeNotDrained(self, self.op.snode)
4826 self.secondaries.append(self.op.snode)
4828 nodenames = [pnode.name] + self.secondaries
4830 req_size = _ComputeDiskSize(self.op.disk_template,
4833 # Check lv size requirements
4834 if req_size is not None:
4835 nodeinfo = self.rpc.call_node_info(nodenames, self.cfg.GetVGName(),
4837 for node in nodenames:
4838 info = nodeinfo[node]
4839 info.Raise("Cannot get current information from node %s" % node)
4841 vg_free = info.get('vg_free', None)
4842 if not isinstance(vg_free, int):
4843 raise errors.OpPrereqError("Can't compute free disk space on"
4845 if req_size > vg_free:
4846 raise errors.OpPrereqError("Not enough disk space on target node %s."
4847 " %d MB available, %d MB required" %
4848 (node, vg_free, req_size))
4850 _CheckHVParams(self, nodenames, self.op.hypervisor, self.op.hvparams)
4853 result = self.rpc.call_os_get(pnode.name, self.op.os_type)
4854 result.Raise("OS '%s' not in supported os list for primary node %s" %
4855 (self.op.os_type, pnode.name), prereq=True)
4857 _CheckNicsBridgesExist(self, self.nics, self.pnode.name)
4859 # memory check on primary node
4861 _CheckNodeFreeMemory(self, self.pnode.name,
4862 "creating instance %s" % self.op.instance_name,
4863 self.be_full[constants.BE_MEMORY],
4866 def Exec(self, feedback_fn):
4867 """Create and add the instance to the cluster.
4870 instance = self.op.instance_name
4871 pnode_name = self.pnode.name
4873 ht_kind = self.op.hypervisor
4874 if ht_kind in constants.HTS_REQ_PORT:
4875 network_port = self.cfg.AllocatePort()
4879 ##if self.op.vnc_bind_address is None:
4880 ## self.op.vnc_bind_address = constants.VNC_DEFAULT_BIND_ADDRESS
4882 # this is needed because os.path.join does not accept None arguments
4883 if self.op.file_storage_dir is None:
4884 string_file_storage_dir = ""
4886 string_file_storage_dir = self.op.file_storage_dir
4888 # build the full file storage dir path
4889 file_storage_dir = os.path.normpath(os.path.join(
4890 self.cfg.GetFileStorageDir(),
4891 string_file_storage_dir, instance))
4894 disks = _GenerateDiskTemplate(self,
4895 self.op.disk_template,
4896 instance, pnode_name,
4900 self.op.file_driver,
4903 iobj = objects.Instance(name=instance, os=self.op.os_type,
4904 primary_node=pnode_name,
4905 nics=self.nics, disks=disks,
4906 disk_template=self.op.disk_template,
4908 network_port=network_port,
4909 beparams=self.op.beparams,
4910 hvparams=self.op.hvparams,
4911 hypervisor=self.op.hypervisor,
4914 feedback_fn("* creating instance disks...")
4916 _CreateDisks(self, iobj)
4917 except errors.OpExecError:
4918 self.LogWarning("Device creation failed, reverting...")
4920 _RemoveDisks(self, iobj)
4922 self.cfg.ReleaseDRBDMinors(instance)
4925 feedback_fn("adding instance %s to cluster config" % instance)
4927 self.cfg.AddInstance(iobj)
4928 # Declare that we don't want to remove the instance lock anymore, as we've
4929 # added the instance to the config
4930 del self.remove_locks[locking.LEVEL_INSTANCE]
4931 # Unlock all the nodes
4932 if self.op.mode == constants.INSTANCE_IMPORT:
4933 nodes_keep = [self.op.src_node]
4934 nodes_release = [node for node in self.acquired_locks[locking.LEVEL_NODE]
4935 if node != self.op.src_node]
4936 self.context.glm.release(locking.LEVEL_NODE, nodes_release)
4937 self.acquired_locks[locking.LEVEL_NODE] = nodes_keep
4939 self.context.glm.release(locking.LEVEL_NODE)
4940 del self.acquired_locks[locking.LEVEL_NODE]
4942 if self.op.wait_for_sync:
4943 disk_abort = not _WaitForSync(self, iobj)
4944 elif iobj.disk_template in constants.DTS_NET_MIRROR:
4945 # make sure the disks are not degraded (still sync-ing is ok)
4947 feedback_fn("* checking mirrors status")
4948 disk_abort = not _WaitForSync(self, iobj, oneshot=True)
4953 _RemoveDisks(self, iobj)
4954 self.cfg.RemoveInstance(iobj.name)
4955 # Make sure the instance lock gets removed
4956 self.remove_locks[locking.LEVEL_INSTANCE] = iobj.name
4957 raise errors.OpExecError("There are some degraded disks for"
4960 feedback_fn("creating os for instance %s on node %s" %
4961 (instance, pnode_name))
4963 if iobj.disk_template != constants.DT_DISKLESS:
4964 if self.op.mode == constants.INSTANCE_CREATE:
4965 feedback_fn("* running the instance OS create scripts...")
4966 result = self.rpc.call_instance_os_add(pnode_name, iobj, False)
4967 result.Raise("Could not add os for instance %s"
4968 " on node %s" % (instance, pnode_name))
4970 elif self.op.mode == constants.INSTANCE_IMPORT:
4971 feedback_fn("* running the instance OS import scripts...")
4972 src_node = self.op.src_node
4973 src_images = self.src_images
4974 cluster_name = self.cfg.GetClusterName()
4975 import_result = self.rpc.call_instance_os_import(pnode_name, iobj,
4976 src_node, src_images,
4978 msg = import_result.fail_msg
4980 self.LogWarning("Error while importing the disk images for instance"
4981 " %s on node %s: %s" % (instance, pnode_name, msg))
4983 # also checked in the prereq part
4984 raise errors.ProgrammerError("Unknown OS initialization mode '%s'"
4988 iobj.admin_up = True
4989 self.cfg.Update(iobj)
4990 logging.info("Starting instance %s on node %s", instance, pnode_name)
4991 feedback_fn("* starting instance...")
4992 result = self.rpc.call_instance_start(pnode_name, iobj, None, None)
4993 result.Raise("Could not start instance")
4996 class LUConnectConsole(NoHooksLU):
4997 """Connect to an instance's console.
4999 This is somewhat special in that it returns the command line that
5000 you need to run on the master node in order to connect to the
5004 _OP_REQP = ["instance_name"]
5007 def ExpandNames(self):
5008 self._ExpandAndLockInstance()
5010 def CheckPrereq(self):
5011 """Check prerequisites.
5013 This checks that the instance is in the cluster.
5016 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5017 assert self.instance is not None, \
5018 "Cannot retrieve locked instance %s" % self.op.instance_name
5019 _CheckNodeOnline(self, self.instance.primary_node)
5021 def Exec(self, feedback_fn):
5022 """Connect to the console of an instance
5025 instance = self.instance
5026 node = instance.primary_node
5028 node_insts = self.rpc.call_instance_list([node],
5029 [instance.hypervisor])[node]
5030 node_insts.Raise("Can't get node information from %s" % node)
5032 if instance.name not in node_insts.payload:
5033 raise errors.OpExecError("Instance %s is not running." % instance.name)
5035 logging.debug("Connecting to console of %s on %s", instance.name, node)
5037 hyper = hypervisor.GetHypervisor(instance.hypervisor)
5038 cluster = self.cfg.GetClusterInfo()
5039 # beparams and hvparams are passed separately, to avoid editing the
5040 # instance and then saving the defaults in the instance itself.
5041 hvparams = cluster.FillHV(instance)
5042 beparams = cluster.FillBE(instance)
5043 console_cmd = hyper.GetShellCommandForConsole(instance, hvparams, beparams)
5046 return self.ssh.BuildCmd(node, "root", console_cmd, batch=True, tty=True)
5049 class LUReplaceDisks(LogicalUnit):
5050 """Replace the disks of an instance.
5053 HPATH = "mirrors-replace"
5054 HTYPE = constants.HTYPE_INSTANCE
5055 _OP_REQP = ["instance_name", "mode", "disks"]
5058 def CheckArguments(self):
5059 if not hasattr(self.op, "remote_node"):
5060 self.op.remote_node = None
5061 if not hasattr(self.op, "iallocator"):
5062 self.op.iallocator = None
5064 # check for valid parameter combination
5065 cnt = [self.op.remote_node, self.op.iallocator].count(None)
5066 if self.op.mode == constants.REPLACE_DISK_CHG:
5068 raise errors.OpPrereqError("When changing the secondary either an"
5069 " iallocator script must be used or the"
5072 raise errors.OpPrereqError("Give either the iallocator or the new"
5073 " secondary, not both")
5074 else: # not replacing the secondary
5076 raise errors.OpPrereqError("The iallocator and new node options can"
5077 " be used only when changing the"
5080 def ExpandNames(self):
5081 self._ExpandAndLockInstance()
5083 if self.op.iallocator is not None:
5084 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
5085 elif self.op.remote_node is not None:
5086 remote_node = self.cfg.ExpandNodeName(self.op.remote_node)
5087 if remote_node is None:
5088 raise errors.OpPrereqError("Node '%s' not known" %
5089 self.op.remote_node)
5090 self.op.remote_node = remote_node
5091 # Warning: do not remove the locking of the new secondary here
5092 # unless DRBD8.AddChildren is changed to work in parallel;
5093 # currently it doesn't since parallel invocations of
5094 # FindUnusedMinor will conflict
5095 self.needed_locks[locking.LEVEL_NODE] = [remote_node]
5096 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_APPEND
5098 self.needed_locks[locking.LEVEL_NODE] = []
5099 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5101 def DeclareLocks(self, level):
5102 # If we're not already locking all nodes in the set we have to declare the
5103 # instance's primary/secondary nodes.
5104 if (level == locking.LEVEL_NODE and
5105 self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET):
5106 self._LockInstancesNodes()
5108 def _RunAllocator(self):
5109 """Compute a new secondary node using an IAllocator.
5112 ial = IAllocator(self,
5113 mode=constants.IALLOCATOR_MODE_RELOC,
5114 name=self.op.instance_name,
5115 relocate_from=[self.sec_node])
5117 ial.Run(self.op.iallocator)
5120 raise errors.OpPrereqError("Can't compute nodes using"
5121 " iallocator '%s': %s" % (self.op.iallocator,
5123 if len(ial.nodes) != ial.required_nodes:
5124 raise errors.OpPrereqError("iallocator '%s' returned invalid number"
5125 " of nodes (%s), required %s" %
5126 (len(ial.nodes), ial.required_nodes))
5127 self.op.remote_node = ial.nodes[0]
5128 self.LogInfo("Selected new secondary for the instance: %s",
5129 self.op.remote_node)
5131 def BuildHooksEnv(self):
5134 This runs on the master, the primary and all the secondaries.
5138 "MODE": self.op.mode,
5139 "NEW_SECONDARY": self.op.remote_node,
5140 "OLD_SECONDARY": self.instance.secondary_nodes[0],
5142 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
5144 self.cfg.GetMasterNode(),
5145 self.instance.primary_node,
5147 if self.op.remote_node is not None:
5148 nl.append(self.op.remote_node)
5151 def CheckPrereq(self):
5152 """Check prerequisites.
5154 This checks that the instance is in the cluster.
5157 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5158 assert instance is not None, \
5159 "Cannot retrieve locked instance %s" % self.op.instance_name
5160 self.instance = instance
5162 if instance.disk_template != constants.DT_DRBD8:
5163 raise errors.OpPrereqError("Can only run replace disks for DRBD8-based"
5166 if len(instance.secondary_nodes) != 1:
5167 raise errors.OpPrereqError("The instance has a strange layout,"
5168 " expected one secondary but found %d" %
5169 len(instance.secondary_nodes))
5171 self.sec_node = instance.secondary_nodes[0]
5173 if self.op.iallocator is not None:
5174 self._RunAllocator()
5176 remote_node = self.op.remote_node
5177 if remote_node is not None:
5178 self.remote_node_info = self.cfg.GetNodeInfo(remote_node)
5179 assert self.remote_node_info is not None, \
5180 "Cannot retrieve locked node %s" % remote_node
5182 self.remote_node_info = None
5183 if remote_node == instance.primary_node:
5184 raise errors.OpPrereqError("The specified node is the primary node of"
5186 elif remote_node == self.sec_node:
5187 raise errors.OpPrereqError("The specified node is already the"
5188 " secondary node of the instance.")
5190 if self.op.mode == constants.REPLACE_DISK_PRI:
5191 n1 = self.tgt_node = instance.primary_node
5192 n2 = self.oth_node = self.sec_node
5193 elif self.op.mode == constants.REPLACE_DISK_SEC:
5194 n1 = self.tgt_node = self.sec_node
5195 n2 = self.oth_node = instance.primary_node
5196 elif self.op.mode == constants.REPLACE_DISK_CHG:
5197 n1 = self.new_node = remote_node
5198 n2 = self.oth_node = instance.primary_node
5199 self.tgt_node = self.sec_node
5200 _CheckNodeNotDrained(self, remote_node)
5202 raise errors.ProgrammerError("Unhandled disk replace mode")
5204 _CheckNodeOnline(self, n1)
5205 _CheckNodeOnline(self, n2)
5207 if not self.op.disks:
5208 self.op.disks = range(len(instance.disks))
5210 for disk_idx in self.op.disks:
5211 instance.FindDisk(disk_idx)
5213 def _ExecD8DiskOnly(self, feedback_fn):
5214 """Replace a disk on the primary or secondary for dbrd8.
5216 The algorithm for replace is quite complicated:
5218 1. for each disk to be replaced:
5220 1. create new LVs on the target node with unique names
5221 1. detach old LVs from the drbd device
5222 1. rename old LVs to name_replaced.<time_t>
5223 1. rename new LVs to old LVs
5224 1. attach the new LVs (with the old names now) to the drbd device
5226 1. wait for sync across all devices
5228 1. for each modified disk:
5230 1. remove old LVs (which have the name name_replaces.<time_t>)
5232 Failures are not very well handled.
5236 warning, info = (self.proc.LogWarning, self.proc.LogInfo)
5237 instance = self.instance
5239 vgname = self.cfg.GetVGName()
5242 tgt_node = self.tgt_node
5243 oth_node = self.oth_node
5245 # Step: check device activation
5246 self.proc.LogStep(1, steps_total, "check device existence")
5247 info("checking volume groups")
5248 my_vg = cfg.GetVGName()
5249 results = self.rpc.call_vg_list([oth_node, tgt_node])
5251 raise errors.OpExecError("Can't list volume groups on the nodes")
5252 for node in oth_node, tgt_node:
5254 res.Raise("Error checking node %s" % node)
5255 if my_vg not in res.payload:
5256 raise errors.OpExecError("Volume group '%s' not found on %s" %
5258 for idx, dev in enumerate(instance.disks):
5259 if idx not in self.op.disks:
5261 for node in tgt_node, oth_node:
5262 info("checking disk/%d on %s" % (idx, node))
5263 cfg.SetDiskID(dev, node)
5264 result = self.rpc.call_blockdev_find(node, dev)
5265 msg = result.fail_msg
5266 if not msg and not result.payload:
5267 msg = "disk not found"
5269 raise errors.OpExecError("Can't find disk/%d on node %s: %s" %
5272 # Step: check other node consistency
5273 self.proc.LogStep(2, steps_total, "check peer consistency")
5274 for idx, dev in enumerate(instance.disks):
5275 if idx not in self.op.disks:
5277 info("checking disk/%d consistency on %s" % (idx, oth_node))
5278 if not _CheckDiskConsistency(self, dev, oth_node,
5279 oth_node==instance.primary_node):
5280 raise errors.OpExecError("Peer node (%s) has degraded storage, unsafe"
5281 " to replace disks on this node (%s)" %
5282 (oth_node, tgt_node))
5284 # Step: create new storage
5285 self.proc.LogStep(3, steps_total, "allocate new storage")
5286 for idx, dev in enumerate(instance.disks):
5287 if idx not in self.op.disks:
5290 cfg.SetDiskID(dev, tgt_node)
5291 lv_names = [".disk%d_%s" % (idx, suf)
5292 for suf in ["data", "meta"]]
5293 names = _GenerateUniqueNames(self, lv_names)
5294 lv_data = objects.Disk(dev_type=constants.LD_LV, size=size,
5295 logical_id=(vgname, names[0]))
5296 lv_meta = objects.Disk(dev_type=constants.LD_LV, size=128,
5297 logical_id=(vgname, names[1]))
5298 new_lvs = [lv_data, lv_meta]
5299 old_lvs = dev.children
5300 iv_names[dev.iv_name] = (dev, old_lvs, new_lvs)
5301 info("creating new local storage on %s for %s" %
5302 (tgt_node, dev.iv_name))
5303 # we pass force_create=True to force the LVM creation
5304 for new_lv in new_lvs:
5305 _CreateBlockDev(self, tgt_node, instance, new_lv, True,
5306 _GetInstanceInfoText(instance), False)
5308 # Step: for each lv, detach+rename*2+attach
5309 self.proc.LogStep(4, steps_total, "change drbd configuration")
5310 for dev, old_lvs, new_lvs in iv_names.itervalues():
5311 info("detaching %s drbd from local storage" % dev.iv_name)
5312 result = self.rpc.call_blockdev_removechildren(tgt_node, dev, old_lvs)
5313 result.Raise("Can't detach drbd from local storage on node"
5314 " %s for device %s" % (tgt_node, dev.iv_name))
5316 #cfg.Update(instance)
5318 # ok, we created the new LVs, so now we know we have the needed
5319 # storage; as such, we proceed on the target node to rename
5320 # old_lv to _old, and new_lv to old_lv; note that we rename LVs
5321 # using the assumption that logical_id == physical_id (which in
5322 # turn is the unique_id on that node)
5324 # FIXME(iustin): use a better name for the replaced LVs
5325 temp_suffix = int(time.time())
5326 ren_fn = lambda d, suff: (d.physical_id[0],
5327 d.physical_id[1] + "_replaced-%s" % suff)
5328 # build the rename list based on what LVs exist on the node
5330 for to_ren in old_lvs:
5331 result = self.rpc.call_blockdev_find(tgt_node, to_ren)
5332 if not result.fail_msg and result.payload:
5334 rlist.append((to_ren, ren_fn(to_ren, temp_suffix)))
5336 info("renaming the old LVs on the target node")
5337 result = self.rpc.call_blockdev_rename(tgt_node, rlist)
5338 result.Raise("Can't rename old LVs on node %s" % tgt_node)
5339 # now we rename the new LVs to the old LVs
5340 info("renaming the new LVs on the target node")
5341 rlist = [(new, old.physical_id) for old, new in zip(old_lvs, new_lvs)]
5342 result = self.rpc.call_blockdev_rename(tgt_node, rlist)
5343 result.Raise("Can't rename new LVs on node %s" % tgt_node)
5345 for old, new in zip(old_lvs, new_lvs):
5346 new.logical_id = old.logical_id
5347 cfg.SetDiskID(new, tgt_node)
5349 for disk in old_lvs:
5350 disk.logical_id = ren_fn(disk, temp_suffix)
5351 cfg.SetDiskID(disk, tgt_node)
5353 # now that the new lvs have the old name, we can add them to the device
5354 info("adding new mirror component on %s" % tgt_node)
5355 result = self.rpc.call_blockdev_addchildren(tgt_node, dev, new_lvs)
5356 msg = result.fail_msg
5358 for new_lv in new_lvs:
5359 msg2 = self.rpc.call_blockdev_remove(tgt_node, new_lv).fail_msg
5361 warning("Can't rollback device %s: %s", dev, msg2,
5362 hint="cleanup manually the unused logical volumes")
5363 raise errors.OpExecError("Can't add local storage to drbd: %s" % msg)
5365 dev.children = new_lvs
5366 cfg.Update(instance)
5368 # Step: wait for sync
5370 # this can fail as the old devices are degraded and _WaitForSync
5371 # does a combined result over all disks, so we don't check its
5373 self.proc.LogStep(5, steps_total, "sync devices")
5374 _WaitForSync(self, instance, unlock=True)
5376 # so check manually all the devices
5377 for name, (dev, old_lvs, new_lvs) in iv_names.iteritems():
5378 cfg.SetDiskID(dev, instance.primary_node)
5379 result = self.rpc.call_blockdev_find(instance.primary_node, dev)
5380 msg = result.fail_msg
5381 if not msg and not result.payload:
5382 msg = "disk not found"
5384 raise errors.OpExecError("Can't find DRBD device %s: %s" %
5386 if result.payload[5]:
5387 raise errors.OpExecError("DRBD device %s is degraded!" % name)
5389 # Step: remove old storage
5390 self.proc.LogStep(6, steps_total, "removing old storage")
5391 for name, (dev, old_lvs, new_lvs) in iv_names.iteritems():
5392 info("remove logical volumes for %s" % name)
5394 cfg.SetDiskID(lv, tgt_node)
5395 msg = self.rpc.call_blockdev_remove(tgt_node, lv).fail_msg
5397 warning("Can't remove old LV: %s" % msg,
5398 hint="manually remove unused LVs")
5401 def _ExecD8Secondary(self, feedback_fn):
5402 """Replace the secondary node for drbd8.
5404 The algorithm for replace is quite complicated:
5405 - for all disks of the instance:
5406 - create new LVs on the new node with same names
5407 - shutdown the drbd device on the old secondary
5408 - disconnect the drbd network on the primary
5409 - create the drbd device on the new secondary
5410 - network attach the drbd on the primary, using an artifice:
5411 the drbd code for Attach() will connect to the network if it
5412 finds a device which is connected to the good local disks but
5414 - wait for sync across all devices
5415 - remove all disks from the old secondary
5417 Failures are not very well handled.
5421 warning, info = (self.proc.LogWarning, self.proc.LogInfo)
5422 instance = self.instance
5426 old_node = self.tgt_node
5427 new_node = self.new_node
5428 pri_node = instance.primary_node
5430 old_node: self.cfg.GetNodeInfo(old_node).secondary_ip,
5431 new_node: self.cfg.GetNodeInfo(new_node).secondary_ip,
5432 pri_node: self.cfg.GetNodeInfo(pri_node).secondary_ip,
5435 # Step: check device activation
5436 self.proc.LogStep(1, steps_total, "check device existence")
5437 info("checking volume groups")
5438 my_vg = cfg.GetVGName()
5439 results = self.rpc.call_vg_list([pri_node, new_node])
5440 for node in pri_node, new_node:
5442 res.Raise("Error checking node %s" % node)
5443 if my_vg not in res.payload:
5444 raise errors.OpExecError("Volume group '%s' not found on %s" %
5446 for idx, dev in enumerate(instance.disks):
5447 if idx not in self.op.disks:
5449 info("checking disk/%d on %s" % (idx, pri_node))
5450 cfg.SetDiskID(dev, pri_node)
5451 result = self.rpc.call_blockdev_find(pri_node, dev)
5452 msg = result.fail_msg
5453 if not msg and not result.payload:
5454 msg = "disk not found"
5456 raise errors.OpExecError("Can't find disk/%d on node %s: %s" %
5457 (idx, pri_node, msg))
5459 # Step: check other node consistency
5460 self.proc.LogStep(2, steps_total, "check peer consistency")
5461 for idx, dev in enumerate(instance.disks):
5462 if idx not in self.op.disks:
5464 info("checking disk/%d consistency on %s" % (idx, pri_node))
5465 if not _CheckDiskConsistency(self, dev, pri_node, True, ldisk=True):
5466 raise errors.OpExecError("Primary node (%s) has degraded storage,"
5467 " unsafe to replace the secondary" %
5470 # Step: create new storage
5471 self.proc.LogStep(3, steps_total, "allocate new storage")
5472 for idx, dev in enumerate(instance.disks):
5473 info("adding new local storage on %s for disk/%d" %
5475 # we pass force_create=True to force LVM creation
5476 for new_lv in dev.children:
5477 _CreateBlockDev(self, new_node, instance, new_lv, True,
5478 _GetInstanceInfoText(instance), False)
5480 # Step 4: dbrd minors and drbd setups changes
5481 # after this, we must manually remove the drbd minors on both the
5482 # error and the success paths
5483 minors = cfg.AllocateDRBDMinor([new_node for dev in instance.disks],
5485 logging.debug("Allocated minors %s" % (minors,))
5486 self.proc.LogStep(4, steps_total, "changing drbd configuration")
5487 for idx, (dev, new_minor) in enumerate(zip(instance.disks, minors)):
5489 info("activating a new drbd on %s for disk/%d" % (new_node, idx))
5490 # create new devices on new_node; note that we create two IDs:
5491 # one without port, so the drbd will be activated without
5492 # networking information on the new node at this stage, and one
5493 # with network, for the latter activation in step 4
5494 (o_node1, o_node2, o_port, o_minor1, o_minor2, o_secret) = dev.logical_id
5495 if pri_node == o_node1:
5500 new_alone_id = (pri_node, new_node, None, p_minor, new_minor, o_secret)
5501 new_net_id = (pri_node, new_node, o_port, p_minor, new_minor, o_secret)
5503 iv_names[idx] = (dev, dev.children, new_net_id)
5504 logging.debug("Allocated new_minor: %s, new_logical_id: %s", new_minor,
5506 new_drbd = objects.Disk(dev_type=constants.LD_DRBD8,
5507 logical_id=new_alone_id,
5508 children=dev.children,
5511 _CreateSingleBlockDev(self, new_node, instance, new_drbd,
5512 _GetInstanceInfoText(instance), False)
5513 except errors.GenericError:
5514 self.cfg.ReleaseDRBDMinors(instance.name)
5517 for idx, dev in enumerate(instance.disks):
5518 # we have new devices, shutdown the drbd on the old secondary
5519 info("shutting down drbd for disk/%d on old node" % idx)
5520 cfg.SetDiskID(dev, old_node)
5521 msg = self.rpc.call_blockdev_shutdown(old_node, dev).fail_msg
5523 warning("Failed to shutdown drbd for disk/%d on old node: %s" %
5525 hint="Please cleanup this device manually as soon as possible")
5527 info("detaching primary drbds from the network (=> standalone)")
5528 result = self.rpc.call_drbd_disconnect_net([pri_node], nodes_ip,
5529 instance.disks)[pri_node]
5531 msg = result.fail_msg
5533 # detaches didn't succeed (unlikely)
5534 self.cfg.ReleaseDRBDMinors(instance.name)
5535 raise errors.OpExecError("Can't detach the disks from the network on"
5536 " old node: %s" % (msg,))
5538 # if we managed to detach at least one, we update all the disks of
5539 # the instance to point to the new secondary
5540 info("updating instance configuration")
5541 for dev, _, new_logical_id in iv_names.itervalues():
5542 dev.logical_id = new_logical_id
5543 cfg.SetDiskID(dev, pri_node)
5544 cfg.Update(instance)
5546 # and now perform the drbd attach
5547 info("attaching primary drbds to new secondary (standalone => connected)")
5548 result = self.rpc.call_drbd_attach_net([pri_node, new_node], nodes_ip,
5549 instance.disks, instance.name,
5551 for to_node, to_result in result.items():
5552 msg = to_result.fail_msg
5554 warning("can't attach drbd disks on node %s: %s", to_node, msg,
5555 hint="please do a gnt-instance info to see the"
5558 # this can fail as the old devices are degraded and _WaitForSync
5559 # does a combined result over all disks, so we don't check its
5561 self.proc.LogStep(5, steps_total, "sync devices")
5562 _WaitForSync(self, instance, unlock=True)
5564 # so check manually all the devices
5565 for idx, (dev, old_lvs, _) in iv_names.iteritems():
5566 cfg.SetDiskID(dev, pri_node)
5567 result = self.rpc.call_blockdev_find(pri_node, dev)
5568 msg = result.fail_msg
5569 if not msg and not result.payload:
5570 msg = "disk not found"
5572 raise errors.OpExecError("Can't find DRBD device disk/%d: %s" %
5574 if result.payload[5]:
5575 raise errors.OpExecError("DRBD device disk/%d is degraded!" % idx)
5577 self.proc.LogStep(6, steps_total, "removing old storage")
5578 for idx, (dev, old_lvs, _) in iv_names.iteritems():
5579 info("remove logical volumes for disk/%d" % idx)
5581 cfg.SetDiskID(lv, old_node)
5582 msg = self.rpc.call_blockdev_remove(old_node, lv).fail_msg
5584 warning("Can't remove LV on old secondary: %s", msg,
5585 hint="Cleanup stale volumes by hand")
5587 def Exec(self, feedback_fn):
5588 """Execute disk replacement.
5590 This dispatches the disk replacement to the appropriate handler.
5593 instance = self.instance
5595 # Activate the instance disks if we're replacing them on a down instance
5596 if not instance.admin_up:
5597 _StartInstanceDisks(self, instance, True)
5599 if self.op.mode == constants.REPLACE_DISK_CHG:
5600 fn = self._ExecD8Secondary
5602 fn = self._ExecD8DiskOnly
5604 ret = fn(feedback_fn)
5606 # Deactivate the instance disks if we're replacing them on a down instance
5607 if not instance.admin_up:
5608 _SafeShutdownInstanceDisks(self, instance)
5613 class LUGrowDisk(LogicalUnit):
5614 """Grow a disk of an instance.
5618 HTYPE = constants.HTYPE_INSTANCE
5619 _OP_REQP = ["instance_name", "disk", "amount", "wait_for_sync"]
5622 def ExpandNames(self):
5623 self._ExpandAndLockInstance()
5624 self.needed_locks[locking.LEVEL_NODE] = []
5625 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5627 def DeclareLocks(self, level):
5628 if level == locking.LEVEL_NODE:
5629 self._LockInstancesNodes()
5631 def BuildHooksEnv(self):
5634 This runs on the master, the primary and all the secondaries.
5638 "DISK": self.op.disk,
5639 "AMOUNT": self.op.amount,
5641 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
5643 self.cfg.GetMasterNode(),
5644 self.instance.primary_node,
5648 def CheckPrereq(self):
5649 """Check prerequisites.
5651 This checks that the instance is in the cluster.
5654 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5655 assert instance is not None, \
5656 "Cannot retrieve locked instance %s" % self.op.instance_name
5657 nodenames = list(instance.all_nodes)
5658 for node in nodenames:
5659 _CheckNodeOnline(self, node)
5662 self.instance = instance
5664 if instance.disk_template not in (constants.DT_PLAIN, constants.DT_DRBD8):
5665 raise errors.OpPrereqError("Instance's disk layout does not support"
5668 self.disk = instance.FindDisk(self.op.disk)
5670 nodeinfo = self.rpc.call_node_info(nodenames, self.cfg.GetVGName(),
5671 instance.hypervisor)
5672 for node in nodenames:
5673 info = nodeinfo[node]
5674 info.Raise("Cannot get current information from node %s" % node)
5675 vg_free = info.payload.get('vg_free', None)
5676 if not isinstance(vg_free, int):
5677 raise errors.OpPrereqError("Can't compute free disk space on"
5679 if self.op.amount > vg_free:
5680 raise errors.OpPrereqError("Not enough disk space on target node %s:"
5681 " %d MiB available, %d MiB required" %
5682 (node, vg_free, self.op.amount))
5684 def Exec(self, feedback_fn):
5685 """Execute disk grow.
5688 instance = self.instance
5690 for node in instance.all_nodes:
5691 self.cfg.SetDiskID(disk, node)
5692 result = self.rpc.call_blockdev_grow(node, disk, self.op.amount)
5693 result.Raise("Grow request failed to node %s" % node)
5694 disk.RecordGrow(self.op.amount)
5695 self.cfg.Update(instance)
5696 if self.op.wait_for_sync:
5697 disk_abort = not _WaitForSync(self, instance)
5699 self.proc.LogWarning("Warning: disk sync-ing has not returned a good"
5700 " status.\nPlease check the instance.")
5703 class LUQueryInstanceData(NoHooksLU):
5704 """Query runtime instance data.
5707 _OP_REQP = ["instances", "static"]
5710 def ExpandNames(self):
5711 self.needed_locks = {}
5712 self.share_locks = dict(((i, 1) for i in locking.LEVELS))
5714 if not isinstance(self.op.instances, list):
5715 raise errors.OpPrereqError("Invalid argument type 'instances'")
5717 if self.op.instances:
5718 self.wanted_names = []
5719 for name in self.op.instances:
5720 full_name = self.cfg.ExpandInstanceName(name)
5721 if full_name is None:
5722 raise errors.OpPrereqError("Instance '%s' not known" % name)
5723 self.wanted_names.append(full_name)
5724 self.needed_locks[locking.LEVEL_INSTANCE] = self.wanted_names
5726 self.wanted_names = None
5727 self.needed_locks[locking.LEVEL_INSTANCE] = locking.ALL_SET
5729 self.needed_locks[locking.LEVEL_NODE] = []
5730 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5732 def DeclareLocks(self, level):
5733 if level == locking.LEVEL_NODE:
5734 self._LockInstancesNodes()
5736 def CheckPrereq(self):
5737 """Check prerequisites.
5739 This only checks the optional instance list against the existing names.
5742 if self.wanted_names is None:
5743 self.wanted_names = self.acquired_locks[locking.LEVEL_INSTANCE]
5745 self.wanted_instances = [self.cfg.GetInstanceInfo(name) for name
5746 in self.wanted_names]
5749 def _ComputeDiskStatus(self, instance, snode, dev):
5750 """Compute block device status.
5753 static = self.op.static
5755 self.cfg.SetDiskID(dev, instance.primary_node)
5756 dev_pstatus = self.rpc.call_blockdev_find(instance.primary_node, dev)
5757 if dev_pstatus.offline:
5760 dev_pstatus.Raise("Can't compute disk status for %s" % instance.name)
5761 dev_pstatus = dev_pstatus.payload
5765 if dev.dev_type in constants.LDS_DRBD:
5766 # we change the snode then (otherwise we use the one passed in)
5767 if dev.logical_id[0] == instance.primary_node:
5768 snode = dev.logical_id[1]
5770 snode = dev.logical_id[0]
5772 if snode and not static:
5773 self.cfg.SetDiskID(dev, snode)
5774 dev_sstatus = self.rpc.call_blockdev_find(snode, dev)
5775 if dev_sstatus.offline:
5778 dev_sstatus.Raise("Can't compute disk status for %s" % instance.name)
5779 dev_sstatus = dev_sstatus.payload
5784 dev_children = [self._ComputeDiskStatus(instance, snode, child)
5785 for child in dev.children]
5790 "iv_name": dev.iv_name,
5791 "dev_type": dev.dev_type,
5792 "logical_id": dev.logical_id,
5793 "physical_id": dev.physical_id,
5794 "pstatus": dev_pstatus,
5795 "sstatus": dev_sstatus,
5796 "children": dev_children,
5802 def Exec(self, feedback_fn):
5803 """Gather and return data"""
5806 cluster = self.cfg.GetClusterInfo()
5808 for instance in self.wanted_instances:
5809 if not self.op.static:
5810 remote_info = self.rpc.call_instance_info(instance.primary_node,
5812 instance.hypervisor)
5813 remote_info.Raise("Error checking node %s" % instance.primary_node)
5814 remote_info = remote_info.payload
5815 if remote_info and "state" in remote_info:
5818 remote_state = "down"
5821 if instance.admin_up:
5824 config_state = "down"
5826 disks = [self._ComputeDiskStatus(instance, None, device)
5827 for device in instance.disks]
5830 "name": instance.name,
5831 "config_state": config_state,
5832 "run_state": remote_state,
5833 "pnode": instance.primary_node,
5834 "snodes": instance.secondary_nodes,
5836 # this happens to be the same format used for hooks
5837 "nics": _NICListToTuple(self, instance.nics),
5839 "hypervisor": instance.hypervisor,
5840 "network_port": instance.network_port,
5841 "hv_instance": instance.hvparams,
5842 "hv_actual": cluster.FillHV(instance),
5843 "be_instance": instance.beparams,
5844 "be_actual": cluster.FillBE(instance),
5847 result[instance.name] = idict
5852 class LUSetInstanceParams(LogicalUnit):
5853 """Modifies an instances's parameters.
5856 HPATH = "instance-modify"
5857 HTYPE = constants.HTYPE_INSTANCE
5858 _OP_REQP = ["instance_name"]
5861 def CheckArguments(self):
5862 if not hasattr(self.op, 'nics'):
5864 if not hasattr(self.op, 'disks'):
5866 if not hasattr(self.op, 'beparams'):
5867 self.op.beparams = {}
5868 if not hasattr(self.op, 'hvparams'):
5869 self.op.hvparams = {}
5870 self.op.force = getattr(self.op, "force", False)
5871 if not (self.op.nics or self.op.disks or
5872 self.op.hvparams or self.op.beparams):
5873 raise errors.OpPrereqError("No changes submitted")
5877 for disk_op, disk_dict in self.op.disks:
5878 if disk_op == constants.DDM_REMOVE:
5881 elif disk_op == constants.DDM_ADD:
5884 if not isinstance(disk_op, int):
5885 raise errors.OpPrereqError("Invalid disk index")
5886 if disk_op == constants.DDM_ADD:
5887 mode = disk_dict.setdefault('mode', constants.DISK_RDWR)
5888 if mode not in constants.DISK_ACCESS_SET:
5889 raise errors.OpPrereqError("Invalid disk access mode '%s'" % mode)
5890 size = disk_dict.get('size', None)
5892 raise errors.OpPrereqError("Required disk parameter size missing")
5895 except ValueError, err:
5896 raise errors.OpPrereqError("Invalid disk size parameter: %s" %
5898 disk_dict['size'] = size
5900 # modification of disk
5901 if 'size' in disk_dict:
5902 raise errors.OpPrereqError("Disk size change not possible, use"
5905 if disk_addremove > 1:
5906 raise errors.OpPrereqError("Only one disk add or remove operation"
5907 " supported at a time")
5911 for nic_op, nic_dict in self.op.nics:
5912 if nic_op == constants.DDM_REMOVE:
5915 elif nic_op == constants.DDM_ADD:
5918 if not isinstance(nic_op, int):
5919 raise errors.OpPrereqError("Invalid nic index")
5921 # nic_dict should be a dict
5922 nic_ip = nic_dict.get('ip', None)
5923 if nic_ip is not None:
5924 if nic_ip.lower() == constants.VALUE_NONE:
5925 nic_dict['ip'] = None
5927 if not utils.IsValidIP(nic_ip):
5928 raise errors.OpPrereqError("Invalid IP address '%s'" % nic_ip)
5930 nic_bridge = nic_dict.get('bridge', None)
5931 nic_link = nic_dict.get('link', None)
5932 if nic_bridge and nic_link:
5933 raise errors.OpPrereqError("Cannot pass 'bridge' and 'link'"
5934 " at the same time")
5935 elif nic_bridge and nic_bridge.lower() == constants.VALUE_NONE:
5936 nic_dict['bridge'] = None
5937 elif nic_link and nic_link.lower() == constants.VALUE_NONE:
5938 nic_dict['link'] = None
5940 if nic_op == constants.DDM_ADD:
5941 nic_mac = nic_dict.get('mac', None)
5943 nic_dict['mac'] = constants.VALUE_AUTO
5945 if 'mac' in nic_dict:
5946 nic_mac = nic_dict['mac']
5947 if nic_mac not in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
5948 if not utils.IsValidMac(nic_mac):
5949 raise errors.OpPrereqError("Invalid MAC address %s" % nic_mac)
5950 if nic_op != constants.DDM_ADD and nic_mac == constants.VALUE_AUTO:
5951 raise errors.OpPrereqError("'auto' is not a valid MAC address when"
5952 " modifying an existing nic")
5954 if nic_addremove > 1:
5955 raise errors.OpPrereqError("Only one NIC add or remove operation"
5956 " supported at a time")
5958 def ExpandNames(self):
5959 self._ExpandAndLockInstance()
5960 self.needed_locks[locking.LEVEL_NODE] = []
5961 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5963 def DeclareLocks(self, level):
5964 if level == locking.LEVEL_NODE:
5965 self._LockInstancesNodes()
5967 def BuildHooksEnv(self):
5970 This runs on the master, primary and secondaries.
5974 if constants.BE_MEMORY in self.be_new:
5975 args['memory'] = self.be_new[constants.BE_MEMORY]
5976 if constants.BE_VCPUS in self.be_new:
5977 args['vcpus'] = self.be_new[constants.BE_VCPUS]
5978 # TODO: export disk changes. Note: _BuildInstanceHookEnv* don't export disk
5979 # information at all.
5982 nic_override = dict(self.op.nics)
5983 c_nicparams = self.cluster.nicparams[constants.PP_DEFAULT]
5984 for idx, nic in enumerate(self.instance.nics):
5985 if idx in nic_override:
5986 this_nic_override = nic_override[idx]
5988 this_nic_override = {}
5989 if 'ip' in this_nic_override:
5990 ip = this_nic_override['ip']
5993 if 'mac' in this_nic_override:
5994 mac = this_nic_override['mac']
5997 if idx in self.nic_pnew:
5998 nicparams = self.nic_pnew[idx]
6000 nicparams = objects.FillDict(c_nicparams, nic.nicparams)
6001 mode = nicparams[constants.NIC_MODE]
6002 link = nicparams[constants.NIC_LINK]
6003 args['nics'].append((ip, mac, mode, link))
6004 if constants.DDM_ADD in nic_override:
6005 ip = nic_override[constants.DDM_ADD].get('ip', None)
6006 mac = nic_override[constants.DDM_ADD]['mac']
6007 nicparams = self.nic_pnew[constants.DDM_ADD]
6008 mode = nicparams[constants.NIC_MODE]
6009 link = nicparams[constants.NIC_LINK]
6010 args['nics'].append((ip, mac, mode, link))
6011 elif constants.DDM_REMOVE in nic_override:
6012 del args['nics'][-1]
6014 env = _BuildInstanceHookEnvByObject(self, self.instance, override=args)
6015 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
6018 def _GetUpdatedParams(self, old_params, update_dict,
6019 default_values, parameter_types):
6020 """Return the new params dict for the given params.
6022 @type old_params: dict
6023 @param old_params: old parameters
6024 @type update_dict: dict
6025 @param update_dict: dict containing new parameter values,
6026 or constants.VALUE_DEFAULT to reset the
6027 parameter to its default value
6028 @type default_values: dict
6029 @param default_values: default values for the filled parameters
6030 @type parameter_types: dict
6031 @param parameter_types: dict mapping target dict keys to types
6032 in constants.ENFORCEABLE_TYPES
6033 @rtype: (dict, dict)
6034 @return: (new_parameters, filled_parameters)
6037 params_copy = copy.deepcopy(old_params)
6038 for key, val in update_dict.iteritems():
6039 if val == constants.VALUE_DEFAULT:
6041 del params_copy[key]
6045 params_copy[key] = val
6046 utils.ForceDictType(params_copy, parameter_types)
6047 params_filled = objects.FillDict(default_values, params_copy)
6048 return (params_copy, params_filled)
6050 def CheckPrereq(self):
6051 """Check prerequisites.
6053 This only checks the instance list against the existing names.
6056 force = self.force = self.op.force
6058 # checking the new params on the primary/secondary nodes
6060 instance = self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
6061 cluster = self.cluster = self.cfg.GetClusterInfo()
6062 assert self.instance is not None, \
6063 "Cannot retrieve locked instance %s" % self.op.instance_name
6064 pnode = instance.primary_node
6065 nodelist = list(instance.all_nodes)
6067 # hvparams processing
6068 if self.op.hvparams:
6069 i_hvdict, hv_new = self._GetUpdatedParams(
6070 instance.hvparams, self.op.hvparams,
6071 cluster.hvparams[instance.hypervisor],
6072 constants.HVS_PARAMETER_TYPES)
6074 hypervisor.GetHypervisor(
6075 instance.hypervisor).CheckParameterSyntax(hv_new)
6076 _CheckHVParams(self, nodelist, instance.hypervisor, hv_new)
6077 self.hv_new = hv_new # the new actual values
6078 self.hv_inst = i_hvdict # the new dict (without defaults)
6080 self.hv_new = self.hv_inst = {}
6082 # beparams processing
6083 if self.op.beparams:
6084 i_bedict, be_new = self._GetUpdatedParams(
6085 instance.beparams, self.op.beparams,
6086 cluster.beparams[constants.PP_DEFAULT],
6087 constants.BES_PARAMETER_TYPES)
6088 self.be_new = be_new # the new actual values
6089 self.be_inst = i_bedict # the new dict (without defaults)
6091 self.be_new = self.be_inst = {}
6095 if constants.BE_MEMORY in self.op.beparams and not self.force:
6096 mem_check_list = [pnode]
6097 if be_new[constants.BE_AUTO_BALANCE]:
6098 # either we changed auto_balance to yes or it was from before
6099 mem_check_list.extend(instance.secondary_nodes)
6100 instance_info = self.rpc.call_instance_info(pnode, instance.name,
6101 instance.hypervisor)
6102 nodeinfo = self.rpc.call_node_info(mem_check_list, self.cfg.GetVGName(),
6103 instance.hypervisor)
6104 pninfo = nodeinfo[pnode]
6105 msg = pninfo.fail_msg
6107 # Assume the primary node is unreachable and go ahead
6108 self.warn.append("Can't get info from primary node %s: %s" %
6110 elif not isinstance(pninfo.payload.get('memory_free', None), int):
6111 self.warn.append("Node data from primary node %s doesn't contain"
6112 " free memory information" % pnode)
6113 elif instance_info.fail_msg:
6114 self.warn.append("Can't get instance runtime information: %s" %
6115 instance_info.fail_msg)
6117 if instance_info.payload:
6118 current_mem = int(instance_info.payload['memory'])
6120 # Assume instance not running
6121 # (there is a slight race condition here, but it's not very probable,
6122 # and we have no other way to check)
6124 miss_mem = (be_new[constants.BE_MEMORY] - current_mem -
6125 pninfo.payload['memory_free'])
6127 raise errors.OpPrereqError("This change will prevent the instance"
6128 " from starting, due to %d MB of memory"
6129 " missing on its primary node" % miss_mem)
6131 if be_new[constants.BE_AUTO_BALANCE]:
6132 for node, nres in nodeinfo.items():
6133 if node not in instance.secondary_nodes:
6137 self.warn.append("Can't get info from secondary node %s: %s" %
6139 elif not isinstance(nres.payload.get('memory_free', None), int):
6140 self.warn.append("Secondary node %s didn't return free"
6141 " memory information" % node)
6142 elif be_new[constants.BE_MEMORY] > nres.payload['memory_free']:
6143 self.warn.append("Not enough memory to failover instance to"
6144 " secondary node %s" % node)
6149 for nic_op, nic_dict in self.op.nics:
6150 if nic_op == constants.DDM_REMOVE:
6151 if not instance.nics:
6152 raise errors.OpPrereqError("Instance has no NICs, cannot remove")
6154 if nic_op != constants.DDM_ADD:
6156 if nic_op < 0 or nic_op >= len(instance.nics):
6157 raise errors.OpPrereqError("Invalid NIC index %s, valid values"
6159 (nic_op, len(instance.nics)))
6160 old_nic_params = instance.nics[nic_op].nicparams
6161 old_nic_ip = instance.nics[nic_op].ip
6166 update_params_dict = dict([(key, nic_dict[key])
6167 for key in constants.NICS_PARAMETERS
6168 if key in nic_dict])
6170 if 'bridge' in nic_dict:
6171 update_params_dict[constants.NIC_LINK] = nic_dict['bridge']
6173 new_nic_params, new_filled_nic_params = \
6174 self._GetUpdatedParams(old_nic_params, update_params_dict,
6175 cluster.nicparams[constants.PP_DEFAULT],
6176 constants.NICS_PARAMETER_TYPES)
6177 objects.NIC.CheckParameterSyntax(new_filled_nic_params)
6178 self.nic_pinst[nic_op] = new_nic_params
6179 self.nic_pnew[nic_op] = new_filled_nic_params
6180 new_nic_mode = new_filled_nic_params[constants.NIC_MODE]
6182 if new_nic_mode == constants.NIC_MODE_BRIDGED:
6183 nic_bridge = new_filled_nic_params[constants.NIC_LINK]
6184 msg = self.rpc.call_bridges_exist(pnode, [nic_bridge]).fail_msg
6186 msg = "Error checking bridges on node %s: %s" % (pnode, msg)
6188 self.warn.append(msg)
6190 raise errors.OpPrereqError(msg)
6191 if new_nic_mode == constants.NIC_MODE_ROUTED:
6192 if 'ip' in nic_dict:
6193 nic_ip = nic_dict['ip']
6197 raise errors.OpPrereqError('Cannot set the nic ip to None'
6199 if 'mac' in nic_dict:
6200 nic_mac = nic_dict['mac']
6202 raise errors.OpPrereqError('Cannot set the nic mac to None')
6203 elif nic_mac in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
6204 # otherwise generate the mac
6205 nic_dict['mac'] = self.cfg.GenerateMAC()
6207 # or validate/reserve the current one
6208 if self.cfg.IsMacInUse(nic_mac):
6209 raise errors.OpPrereqError("MAC address %s already in use"
6210 " in cluster" % nic_mac)
6213 if self.op.disks and instance.disk_template == constants.DT_DISKLESS:
6214 raise errors.OpPrereqError("Disk operations not supported for"
6215 " diskless instances")
6216 for disk_op, disk_dict in self.op.disks:
6217 if disk_op == constants.DDM_REMOVE:
6218 if len(instance.disks) == 1:
6219 raise errors.OpPrereqError("Cannot remove the last disk of"
6221 ins_l = self.rpc.call_instance_list([pnode], [instance.hypervisor])
6222 ins_l = ins_l[pnode]
6223 msg = ins_l.fail_msg
6225 raise errors.OpPrereqError("Can't contact node %s: %s" %
6227 if instance.name in ins_l.payload:
6228 raise errors.OpPrereqError("Instance is running, can't remove"
6231 if (disk_op == constants.DDM_ADD and
6232 len(instance.nics) >= constants.MAX_DISKS):
6233 raise errors.OpPrereqError("Instance has too many disks (%d), cannot"
6234 " add more" % constants.MAX_DISKS)
6235 if disk_op not in (constants.DDM_ADD, constants.DDM_REMOVE):
6237 if disk_op < 0 or disk_op >= len(instance.disks):
6238 raise errors.OpPrereqError("Invalid disk index %s, valid values"
6240 (disk_op, len(instance.disks)))
6244 def Exec(self, feedback_fn):
6245 """Modifies an instance.
6247 All parameters take effect only at the next restart of the instance.
6250 # Process here the warnings from CheckPrereq, as we don't have a
6251 # feedback_fn there.
6252 for warn in self.warn:
6253 feedback_fn("WARNING: %s" % warn)
6256 instance = self.instance
6257 cluster = self.cluster
6259 for disk_op, disk_dict in self.op.disks:
6260 if disk_op == constants.DDM_REMOVE:
6261 # remove the last disk
6262 device = instance.disks.pop()
6263 device_idx = len(instance.disks)
6264 for node, disk in device.ComputeNodeTree(instance.primary_node):
6265 self.cfg.SetDiskID(disk, node)
6266 msg = self.rpc.call_blockdev_remove(node, disk).fail_msg
6268 self.LogWarning("Could not remove disk/%d on node %s: %s,"
6269 " continuing anyway", device_idx, node, msg)
6270 result.append(("disk/%d" % device_idx, "remove"))
6271 elif disk_op == constants.DDM_ADD:
6273 if instance.disk_template == constants.DT_FILE:
6274 file_driver, file_path = instance.disks[0].logical_id
6275 file_path = os.path.dirname(file_path)
6277 file_driver = file_path = None
6278 disk_idx_base = len(instance.disks)
6279 new_disk = _GenerateDiskTemplate(self,
6280 instance.disk_template,
6281 instance.name, instance.primary_node,
6282 instance.secondary_nodes,
6287 instance.disks.append(new_disk)
6288 info = _GetInstanceInfoText(instance)
6290 logging.info("Creating volume %s for instance %s",
6291 new_disk.iv_name, instance.name)
6292 # Note: this needs to be kept in sync with _CreateDisks
6294 for node in instance.all_nodes:
6295 f_create = node == instance.primary_node
6297 _CreateBlockDev(self, node, instance, new_disk,
6298 f_create, info, f_create)
6299 except errors.OpExecError, err:
6300 self.LogWarning("Failed to create volume %s (%s) on"
6302 new_disk.iv_name, new_disk, node, err)
6303 result.append(("disk/%d" % disk_idx_base, "add:size=%s,mode=%s" %
6304 (new_disk.size, new_disk.mode)))
6306 # change a given disk
6307 instance.disks[disk_op].mode = disk_dict['mode']
6308 result.append(("disk.mode/%d" % disk_op, disk_dict['mode']))
6310 for nic_op, nic_dict in self.op.nics:
6311 if nic_op == constants.DDM_REMOVE:
6312 # remove the last nic
6313 del instance.nics[-1]
6314 result.append(("nic.%d" % len(instance.nics), "remove"))
6315 elif nic_op == constants.DDM_ADD:
6316 # mac and bridge should be set, by now
6317 mac = nic_dict['mac']
6318 ip = nic_dict.get('ip', None)
6319 nicparams = self.nic_pinst[constants.DDM_ADD]
6320 new_nic = objects.NIC(mac=mac, ip=ip, nicparams=nicparams)
6321 instance.nics.append(new_nic)
6322 result.append(("nic.%d" % (len(instance.nics) - 1),
6323 "add:mac=%s,ip=%s,mode=%s,link=%s" %
6324 (new_nic.mac, new_nic.ip,
6325 self.nic_pnew[constants.DDM_ADD][constants.NIC_MODE],
6326 self.nic_pnew[constants.DDM_ADD][constants.NIC_LINK]
6329 for key in 'mac', 'ip':
6331 setattr(instance.nics[nic_op], key, nic_dict[key])
6332 if nic_op in self.nic_pnew:
6333 instance.nics[nic_op].nicparams = self.nic_pnew[nic_op]
6334 for key, val in nic_dict.iteritems():
6335 result.append(("nic.%s/%d" % (key, nic_op), val))
6338 if self.op.hvparams:
6339 instance.hvparams = self.hv_inst
6340 for key, val in self.op.hvparams.iteritems():
6341 result.append(("hv/%s" % key, val))
6344 if self.op.beparams:
6345 instance.beparams = self.be_inst
6346 for key, val in self.op.beparams.iteritems():
6347 result.append(("be/%s" % key, val))
6349 self.cfg.Update(instance)
6354 class LUQueryExports(NoHooksLU):
6355 """Query the exports list
6358 _OP_REQP = ['nodes']
6361 def ExpandNames(self):
6362 self.needed_locks = {}
6363 self.share_locks[locking.LEVEL_NODE] = 1
6364 if not self.op.nodes:
6365 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
6367 self.needed_locks[locking.LEVEL_NODE] = \
6368 _GetWantedNodes(self, self.op.nodes)
6370 def CheckPrereq(self):
6371 """Check prerequisites.
6374 self.nodes = self.acquired_locks[locking.LEVEL_NODE]
6376 def Exec(self, feedback_fn):
6377 """Compute the list of all the exported system images.
6380 @return: a dictionary with the structure node->(export-list)
6381 where export-list is a list of the instances exported on
6385 rpcresult = self.rpc.call_export_list(self.nodes)
6387 for node in rpcresult:
6388 if rpcresult[node].fail_msg:
6389 result[node] = False
6391 result[node] = rpcresult[node].payload
6396 class LUExportInstance(LogicalUnit):
6397 """Export an instance to an image in the cluster.
6400 HPATH = "instance-export"
6401 HTYPE = constants.HTYPE_INSTANCE
6402 _OP_REQP = ["instance_name", "target_node", "shutdown"]
6405 def ExpandNames(self):
6406 self._ExpandAndLockInstance()
6407 # FIXME: lock only instance primary and destination node
6409 # Sad but true, for now we have do lock all nodes, as we don't know where
6410 # the previous export might be, and and in this LU we search for it and
6411 # remove it from its current node. In the future we could fix this by:
6412 # - making a tasklet to search (share-lock all), then create the new one,
6413 # then one to remove, after
6414 # - removing the removal operation altoghether
6415 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
6417 def DeclareLocks(self, level):
6418 """Last minute lock declaration."""
6419 # All nodes are locked anyway, so nothing to do here.
6421 def BuildHooksEnv(self):
6424 This will run on the master, primary node and target node.
6428 "EXPORT_NODE": self.op.target_node,
6429 "EXPORT_DO_SHUTDOWN": self.op.shutdown,
6431 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
6432 nl = [self.cfg.GetMasterNode(), self.instance.primary_node,
6433 self.op.target_node]
6436 def CheckPrereq(self):
6437 """Check prerequisites.
6439 This checks that the instance and node names are valid.
6442 instance_name = self.op.instance_name
6443 self.instance = self.cfg.GetInstanceInfo(instance_name)
6444 assert self.instance is not None, \
6445 "Cannot retrieve locked instance %s" % self.op.instance_name
6446 _CheckNodeOnline(self, self.instance.primary_node)
6448 self.dst_node = self.cfg.GetNodeInfo(
6449 self.cfg.ExpandNodeName(self.op.target_node))
6451 if self.dst_node is None:
6452 # This is wrong node name, not a non-locked node
6453 raise errors.OpPrereqError("Wrong node name %s" % self.op.target_node)
6454 _CheckNodeOnline(self, self.dst_node.name)
6455 _CheckNodeNotDrained(self, self.dst_node.name)
6457 # instance disk type verification
6458 for disk in self.instance.disks:
6459 if disk.dev_type == constants.LD_FILE:
6460 raise errors.OpPrereqError("Export not supported for instances with"
6461 " file-based disks")
6463 def Exec(self, feedback_fn):
6464 """Export an instance to an image in the cluster.
6467 instance = self.instance
6468 dst_node = self.dst_node
6469 src_node = instance.primary_node
6470 if self.op.shutdown:
6471 # shutdown the instance, but not the disks
6472 result = self.rpc.call_instance_shutdown(src_node, instance)
6473 result.Raise("Could not shutdown instance %s on"
6474 " node %s" % (instance.name, src_node))
6476 vgname = self.cfg.GetVGName()
6480 # set the disks ID correctly since call_instance_start needs the
6481 # correct drbd minor to create the symlinks
6482 for disk in instance.disks:
6483 self.cfg.SetDiskID(disk, src_node)
6486 for idx, disk in enumerate(instance.disks):
6487 # result.payload will be a snapshot of an lvm leaf of the one we passed
6488 result = self.rpc.call_blockdev_snapshot(src_node, disk)
6489 msg = result.fail_msg
6491 self.LogWarning("Could not snapshot disk/%s on node %s: %s",
6493 snap_disks.append(False)
6495 disk_id = (vgname, result.payload)
6496 new_dev = objects.Disk(dev_type=constants.LD_LV, size=disk.size,
6497 logical_id=disk_id, physical_id=disk_id,
6498 iv_name=disk.iv_name)
6499 snap_disks.append(new_dev)
6502 if self.op.shutdown and instance.admin_up:
6503 result = self.rpc.call_instance_start(src_node, instance, None, None)
6504 msg = result.fail_msg
6506 _ShutdownInstanceDisks(self, instance)
6507 raise errors.OpExecError("Could not start instance: %s" % msg)
6509 # TODO: check for size
6511 cluster_name = self.cfg.GetClusterName()
6512 for idx, dev in enumerate(snap_disks):
6514 result = self.rpc.call_snapshot_export(src_node, dev, dst_node.name,
6515 instance, cluster_name, idx)
6516 msg = result.fail_msg
6518 self.LogWarning("Could not export disk/%s from node %s to"
6519 " node %s: %s", idx, src_node, dst_node.name, msg)
6520 msg = self.rpc.call_blockdev_remove(src_node, dev).fail_msg
6522 self.LogWarning("Could not remove snapshot for disk/%d from node"
6523 " %s: %s", idx, src_node, msg)
6525 result = self.rpc.call_finalize_export(dst_node.name, instance, snap_disks)
6526 msg = result.fail_msg
6528 self.LogWarning("Could not finalize export for instance %s"
6529 " on node %s: %s", instance.name, dst_node.name, msg)
6531 nodelist = self.cfg.GetNodeList()
6532 nodelist.remove(dst_node.name)
6534 # on one-node clusters nodelist will be empty after the removal
6535 # if we proceed the backup would be removed because OpQueryExports
6536 # substitutes an empty list with the full cluster node list.
6537 iname = instance.name
6539 exportlist = self.rpc.call_export_list(nodelist)
6540 for node in exportlist:
6541 if exportlist[node].fail_msg:
6543 if iname in exportlist[node].payload:
6544 msg = self.rpc.call_export_remove(node, iname).fail_msg
6546 self.LogWarning("Could not remove older export for instance %s"
6547 " on node %s: %s", iname, node, msg)
6550 class LURemoveExport(NoHooksLU):
6551 """Remove exports related to the named instance.
6554 _OP_REQP = ["instance_name"]
6557 def ExpandNames(self):
6558 self.needed_locks = {}
6559 # We need all nodes to be locked in order for RemoveExport to work, but we
6560 # don't need to lock the instance itself, as nothing will happen to it (and
6561 # we can remove exports also for a removed instance)
6562 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
6564 def CheckPrereq(self):
6565 """Check prerequisites.
6569 def Exec(self, feedback_fn):
6570 """Remove any export.
6573 instance_name = self.cfg.ExpandInstanceName(self.op.instance_name)
6574 # If the instance was not found we'll try with the name that was passed in.
6575 # This will only work if it was an FQDN, though.
6577 if not instance_name:
6579 instance_name = self.op.instance_name
6581 locked_nodes = self.acquired_locks[locking.LEVEL_NODE]
6582 exportlist = self.rpc.call_export_list(locked_nodes)
6584 for node in exportlist:
6585 msg = exportlist[node].fail_msg
6587 self.LogWarning("Failed to query node %s (continuing): %s", node, msg)
6589 if instance_name in exportlist[node].payload:
6591 result = self.rpc.call_export_remove(node, instance_name)
6592 msg = result.fail_msg
6594 logging.error("Could not remove export for instance %s"
6595 " on node %s: %s", instance_name, node, msg)
6597 if fqdn_warn and not found:
6598 feedback_fn("Export not found. If trying to remove an export belonging"
6599 " to a deleted instance please use its Fully Qualified"
6603 class TagsLU(NoHooksLU):
6606 This is an abstract class which is the parent of all the other tags LUs.
6610 def ExpandNames(self):
6611 self.needed_locks = {}
6612 if self.op.kind == constants.TAG_NODE:
6613 name = self.cfg.ExpandNodeName(self.op.name)
6615 raise errors.OpPrereqError("Invalid node name (%s)" %
6618 self.needed_locks[locking.LEVEL_NODE] = name
6619 elif self.op.kind == constants.TAG_INSTANCE:
6620 name = self.cfg.ExpandInstanceName(self.op.name)
6622 raise errors.OpPrereqError("Invalid instance name (%s)" %
6625 self.needed_locks[locking.LEVEL_INSTANCE] = name
6627 def CheckPrereq(self):
6628 """Check prerequisites.
6631 if self.op.kind == constants.TAG_CLUSTER:
6632 self.target = self.cfg.GetClusterInfo()
6633 elif self.op.kind == constants.TAG_NODE:
6634 self.target = self.cfg.GetNodeInfo(self.op.name)
6635 elif self.op.kind == constants.TAG_INSTANCE:
6636 self.target = self.cfg.GetInstanceInfo(self.op.name)
6638 raise errors.OpPrereqError("Wrong tag type requested (%s)" %
6642 class LUGetTags(TagsLU):
6643 """Returns the tags of a given object.
6646 _OP_REQP = ["kind", "name"]
6649 def Exec(self, feedback_fn):
6650 """Returns the tag list.
6653 return list(self.target.GetTags())
6656 class LUSearchTags(NoHooksLU):
6657 """Searches the tags for a given pattern.
6660 _OP_REQP = ["pattern"]
6663 def ExpandNames(self):
6664 self.needed_locks = {}
6666 def CheckPrereq(self):
6667 """Check prerequisites.
6669 This checks the pattern passed for validity by compiling it.
6673 self.re = re.compile(self.op.pattern)
6674 except re.error, err:
6675 raise errors.OpPrereqError("Invalid search pattern '%s': %s" %
6676 (self.op.pattern, err))
6678 def Exec(self, feedback_fn):
6679 """Returns the tag list.
6683 tgts = [("/cluster", cfg.GetClusterInfo())]
6684 ilist = cfg.GetAllInstancesInfo().values()
6685 tgts.extend([("/instances/%s" % i.name, i) for i in ilist])
6686 nlist = cfg.GetAllNodesInfo().values()
6687 tgts.extend([("/nodes/%s" % n.name, n) for n in nlist])
6689 for path, target in tgts:
6690 for tag in target.GetTags():
6691 if self.re.search(tag):
6692 results.append((path, tag))
6696 class LUAddTags(TagsLU):
6697 """Sets a tag on a given object.
6700 _OP_REQP = ["kind", "name", "tags"]
6703 def CheckPrereq(self):
6704 """Check prerequisites.
6706 This checks the type and length of the tag name and value.
6709 TagsLU.CheckPrereq(self)
6710 for tag in self.op.tags:
6711 objects.TaggableObject.ValidateTag(tag)
6713 def Exec(self, feedback_fn):
6718 for tag in self.op.tags:
6719 self.target.AddTag(tag)
6720 except errors.TagError, err:
6721 raise errors.OpExecError("Error while setting tag: %s" % str(err))
6723 self.cfg.Update(self.target)
6724 except errors.ConfigurationError:
6725 raise errors.OpRetryError("There has been a modification to the"
6726 " config file and the operation has been"
6727 " aborted. Please retry.")
6730 class LUDelTags(TagsLU):
6731 """Delete a list of tags from a given object.
6734 _OP_REQP = ["kind", "name", "tags"]
6737 def CheckPrereq(self):
6738 """Check prerequisites.
6740 This checks that we have the given tag.
6743 TagsLU.CheckPrereq(self)
6744 for tag in self.op.tags:
6745 objects.TaggableObject.ValidateTag(tag)
6746 del_tags = frozenset(self.op.tags)
6747 cur_tags = self.target.GetTags()
6748 if not del_tags <= cur_tags:
6749 diff_tags = del_tags - cur_tags
6750 diff_names = ["'%s'" % tag for tag in diff_tags]
6752 raise errors.OpPrereqError("Tag(s) %s not found" %
6753 (",".join(diff_names)))
6755 def Exec(self, feedback_fn):
6756 """Remove the tag from the object.
6759 for tag in self.op.tags:
6760 self.target.RemoveTag(tag)
6762 self.cfg.Update(self.target)
6763 except errors.ConfigurationError:
6764 raise errors.OpRetryError("There has been a modification to the"
6765 " config file and the operation has been"
6766 " aborted. Please retry.")
6769 class LUTestDelay(NoHooksLU):
6770 """Sleep for a specified amount of time.
6772 This LU sleeps on the master and/or nodes for a specified amount of
6776 _OP_REQP = ["duration", "on_master", "on_nodes"]
6779 def ExpandNames(self):
6780 """Expand names and set required locks.
6782 This expands the node list, if any.
6785 self.needed_locks = {}
6786 if self.op.on_nodes:
6787 # _GetWantedNodes can be used here, but is not always appropriate to use
6788 # this way in ExpandNames. Check LogicalUnit.ExpandNames docstring for
6790 self.op.on_nodes = _GetWantedNodes(self, self.op.on_nodes)
6791 self.needed_locks[locking.LEVEL_NODE] = self.op.on_nodes
6793 def CheckPrereq(self):
6794 """Check prerequisites.
6798 def Exec(self, feedback_fn):
6799 """Do the actual sleep.
6802 if self.op.on_master:
6803 if not utils.TestDelay(self.op.duration):
6804 raise errors.OpExecError("Error during master delay test")
6805 if self.op.on_nodes:
6806 result = self.rpc.call_test_delay(self.op.on_nodes, self.op.duration)
6807 for node, node_result in result.items():
6808 node_result.Raise("Failure during rpc call to node %s" % node)
6811 class IAllocator(object):
6812 """IAllocator framework.
6814 An IAllocator instance has three sets of attributes:
6815 - cfg that is needed to query the cluster
6816 - input data (all members of the _KEYS class attribute are required)
6817 - four buffer attributes (in|out_data|text), that represent the
6818 input (to the external script) in text and data structure format,
6819 and the output from it, again in two formats
6820 - the result variables from the script (success, info, nodes) for
6825 "mem_size", "disks", "disk_template",
6826 "os", "tags", "nics", "vcpus", "hypervisor",
6832 def __init__(self, lu, mode, name, **kwargs):
6834 # init buffer variables
6835 self.in_text = self.out_text = self.in_data = self.out_data = None
6836 # init all input fields so that pylint is happy
6839 self.mem_size = self.disks = self.disk_template = None
6840 self.os = self.tags = self.nics = self.vcpus = None
6841 self.hypervisor = None
6842 self.relocate_from = None
6844 self.required_nodes = None
6845 # init result fields
6846 self.success = self.info = self.nodes = None
6847 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
6848 keyset = self._ALLO_KEYS
6849 elif self.mode == constants.IALLOCATOR_MODE_RELOC:
6850 keyset = self._RELO_KEYS
6852 raise errors.ProgrammerError("Unknown mode '%s' passed to the"
6853 " IAllocator" % self.mode)
6855 if key not in keyset:
6856 raise errors.ProgrammerError("Invalid input parameter '%s' to"
6857 " IAllocator" % key)
6858 setattr(self, key, kwargs[key])
6860 if key not in kwargs:
6861 raise errors.ProgrammerError("Missing input parameter '%s' to"
6862 " IAllocator" % key)
6863 self._BuildInputData()
6865 def _ComputeClusterData(self):
6866 """Compute the generic allocator input data.
6868 This is the data that is independent of the actual operation.
6872 cluster_info = cfg.GetClusterInfo()
6875 "version": constants.IALLOCATOR_VERSION,
6876 "cluster_name": cfg.GetClusterName(),
6877 "cluster_tags": list(cluster_info.GetTags()),
6878 "enabled_hypervisors": list(cluster_info.enabled_hypervisors),
6879 # we don't have job IDs
6881 iinfo = cfg.GetAllInstancesInfo().values()
6882 i_list = [(inst, cluster_info.FillBE(inst)) for inst in iinfo]
6886 node_list = cfg.GetNodeList()
6888 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
6889 hypervisor_name = self.hypervisor
6890 elif self.mode == constants.IALLOCATOR_MODE_RELOC:
6891 hypervisor_name = cfg.GetInstanceInfo(self.name).hypervisor
6893 node_data = self.lu.rpc.call_node_info(node_list, cfg.GetVGName(),
6895 node_iinfo = self.lu.rpc.call_all_instances_info(node_list,
6896 cluster_info.enabled_hypervisors)
6897 for nname, nresult in node_data.items():
6898 # first fill in static (config-based) values
6899 ninfo = cfg.GetNodeInfo(nname)
6901 "tags": list(ninfo.GetTags()),
6902 "primary_ip": ninfo.primary_ip,
6903 "secondary_ip": ninfo.secondary_ip,
6904 "offline": ninfo.offline,
6905 "drained": ninfo.drained,
6906 "master_candidate": ninfo.master_candidate,
6909 if not ninfo.offline:
6910 nresult.Raise("Can't get data for node %s" % nname)
6911 node_iinfo[nname].Raise("Can't get node instance info from node %s" %
6913 remote_info = nresult.payload
6914 for attr in ['memory_total', 'memory_free', 'memory_dom0',
6915 'vg_size', 'vg_free', 'cpu_total']:
6916 if attr not in remote_info:
6917 raise errors.OpExecError("Node '%s' didn't return attribute"
6918 " '%s'" % (nname, attr))
6919 if not isinstance(remote_info[attr], int):
6920 raise errors.OpExecError("Node '%s' returned invalid value"
6922 (nname, attr, remote_info[attr]))
6923 # compute memory used by primary instances
6924 i_p_mem = i_p_up_mem = 0
6925 for iinfo, beinfo in i_list:
6926 if iinfo.primary_node == nname:
6927 i_p_mem += beinfo[constants.BE_MEMORY]
6928 if iinfo.name not in node_iinfo[nname].payload:
6931 i_used_mem = int(node_iinfo[nname].payload[iinfo.name]['memory'])
6932 i_mem_diff = beinfo[constants.BE_MEMORY] - i_used_mem
6933 remote_info['memory_free'] -= max(0, i_mem_diff)
6936 i_p_up_mem += beinfo[constants.BE_MEMORY]
6938 # compute memory used by instances
6940 "total_memory": remote_info['memory_total'],
6941 "reserved_memory": remote_info['memory_dom0'],
6942 "free_memory": remote_info['memory_free'],
6943 "total_disk": remote_info['vg_size'],
6944 "free_disk": remote_info['vg_free'],
6945 "total_cpus": remote_info['cpu_total'],
6946 "i_pri_memory": i_p_mem,
6947 "i_pri_up_memory": i_p_up_mem,
6951 node_results[nname] = pnr
6952 data["nodes"] = node_results
6956 for iinfo, beinfo in i_list:
6958 for nic in iinfo.nics:
6959 filled_params = objects.FillDict(
6960 cluster_info.nicparams[constants.PP_DEFAULT],
6962 nic_dict = {"mac": nic.mac,
6964 "mode": filled_params[constants.NIC_MODE],
6965 "link": filled_params[constants.NIC_LINK],
6967 if filled_params[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
6968 nic_dict["bridge"] = filled_params[constants.NIC_LINK]
6969 nic_data.append(nic_dict)
6971 "tags": list(iinfo.GetTags()),
6972 "admin_up": iinfo.admin_up,
6973 "vcpus": beinfo[constants.BE_VCPUS],
6974 "memory": beinfo[constants.BE_MEMORY],
6976 "nodes": [iinfo.primary_node] + list(iinfo.secondary_nodes),
6978 "disks": [{"size": dsk.size, "mode": dsk.mode} for dsk in iinfo.disks],
6979 "disk_template": iinfo.disk_template,
6980 "hypervisor": iinfo.hypervisor,
6982 pir["disk_space_total"] = _ComputeDiskSize(iinfo.disk_template,
6984 instance_data[iinfo.name] = pir
6986 data["instances"] = instance_data
6990 def _AddNewInstance(self):
6991 """Add new instance data to allocator structure.
6993 This in combination with _AllocatorGetClusterData will create the
6994 correct structure needed as input for the allocator.
6996 The checks for the completeness of the opcode must have already been
7002 disk_space = _ComputeDiskSize(self.disk_template, self.disks)
7004 if self.disk_template in constants.DTS_NET_MIRROR:
7005 self.required_nodes = 2
7007 self.required_nodes = 1
7011 "disk_template": self.disk_template,
7014 "vcpus": self.vcpus,
7015 "memory": self.mem_size,
7016 "disks": self.disks,
7017 "disk_space_total": disk_space,
7019 "required_nodes": self.required_nodes,
7021 data["request"] = request
7023 def _AddRelocateInstance(self):
7024 """Add relocate instance data to allocator structure.
7026 This in combination with _IAllocatorGetClusterData will create the
7027 correct structure needed as input for the allocator.
7029 The checks for the completeness of the opcode must have already been
7033 instance = self.lu.cfg.GetInstanceInfo(self.name)
7034 if instance is None:
7035 raise errors.ProgrammerError("Unknown instance '%s' passed to"
7036 " IAllocator" % self.name)
7038 if instance.disk_template not in constants.DTS_NET_MIRROR:
7039 raise errors.OpPrereqError("Can't relocate non-mirrored instances")
7041 if len(instance.secondary_nodes) != 1:
7042 raise errors.OpPrereqError("Instance has not exactly one secondary node")
7044 self.required_nodes = 1
7045 disk_sizes = [{'size': disk.size} for disk in instance.disks]
7046 disk_space = _ComputeDiskSize(instance.disk_template, disk_sizes)
7051 "disk_space_total": disk_space,
7052 "required_nodes": self.required_nodes,
7053 "relocate_from": self.relocate_from,
7055 self.in_data["request"] = request
7057 def _BuildInputData(self):
7058 """Build input data structures.
7061 self._ComputeClusterData()
7063 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
7064 self._AddNewInstance()
7066 self._AddRelocateInstance()
7068 self.in_text = serializer.Dump(self.in_data)
7070 def Run(self, name, validate=True, call_fn=None):
7071 """Run an instance allocator and return the results.
7075 call_fn = self.lu.rpc.call_iallocator_runner
7078 result = call_fn(self.lu.cfg.GetMasterNode(), name, self.in_text)
7079 result.Raise("Failure while running the iallocator script")
7081 self.out_text = result.payload
7083 self._ValidateResult()
7085 def _ValidateResult(self):
7086 """Process the allocator results.
7088 This will process and if successful save the result in
7089 self.out_data and the other parameters.
7093 rdict = serializer.Load(self.out_text)
7094 except Exception, err:
7095 raise errors.OpExecError("Can't parse iallocator results: %s" % str(err))
7097 if not isinstance(rdict, dict):
7098 raise errors.OpExecError("Can't parse iallocator results: not a dict")
7100 for key in "success", "info", "nodes":
7101 if key not in rdict:
7102 raise errors.OpExecError("Can't parse iallocator results:"
7103 " missing key '%s'" % key)
7104 setattr(self, key, rdict[key])
7106 if not isinstance(rdict["nodes"], list):
7107 raise errors.OpExecError("Can't parse iallocator results: 'nodes' key"
7109 self.out_data = rdict
7112 class LUTestAllocator(NoHooksLU):
7113 """Run allocator tests.
7115 This LU runs the allocator tests
7118 _OP_REQP = ["direction", "mode", "name"]
7120 def CheckPrereq(self):
7121 """Check prerequisites.
7123 This checks the opcode parameters depending on the director and mode test.
7126 if self.op.mode == constants.IALLOCATOR_MODE_ALLOC:
7127 for attr in ["name", "mem_size", "disks", "disk_template",
7128 "os", "tags", "nics", "vcpus"]:
7129 if not hasattr(self.op, attr):
7130 raise errors.OpPrereqError("Missing attribute '%s' on opcode input" %
7132 iname = self.cfg.ExpandInstanceName(self.op.name)
7133 if iname is not None:
7134 raise errors.OpPrereqError("Instance '%s' already in the cluster" %
7136 if not isinstance(self.op.nics, list):
7137 raise errors.OpPrereqError("Invalid parameter 'nics'")
7138 for row in self.op.nics:
7139 if (not isinstance(row, dict) or
7142 "bridge" not in row):
7143 raise errors.OpPrereqError("Invalid contents of the"
7144 " 'nics' parameter")
7145 if not isinstance(self.op.disks, list):
7146 raise errors.OpPrereqError("Invalid parameter 'disks'")
7147 for row in self.op.disks:
7148 if (not isinstance(row, dict) or
7149 "size" not in row or
7150 not isinstance(row["size"], int) or
7151 "mode" not in row or
7152 row["mode"] not in ['r', 'w']):
7153 raise errors.OpPrereqError("Invalid contents of the"
7154 " 'disks' parameter")
7155 if not hasattr(self.op, "hypervisor") or self.op.hypervisor is None:
7156 self.op.hypervisor = self.cfg.GetHypervisorType()
7157 elif self.op.mode == constants.IALLOCATOR_MODE_RELOC:
7158 if not hasattr(self.op, "name"):
7159 raise errors.OpPrereqError("Missing attribute 'name' on opcode input")
7160 fname = self.cfg.ExpandInstanceName(self.op.name)
7162 raise errors.OpPrereqError("Instance '%s' not found for relocation" %
7164 self.op.name = fname
7165 self.relocate_from = self.cfg.GetInstanceInfo(fname).secondary_nodes
7167 raise errors.OpPrereqError("Invalid test allocator mode '%s'" %
7170 if self.op.direction == constants.IALLOCATOR_DIR_OUT:
7171 if not hasattr(self.op, "allocator") or self.op.allocator is None:
7172 raise errors.OpPrereqError("Missing allocator name")
7173 elif self.op.direction != constants.IALLOCATOR_DIR_IN:
7174 raise errors.OpPrereqError("Wrong allocator test '%s'" %
7177 def Exec(self, feedback_fn):
7178 """Run the allocator test.
7181 if self.op.mode == constants.IALLOCATOR_MODE_ALLOC:
7182 ial = IAllocator(self,
7185 mem_size=self.op.mem_size,
7186 disks=self.op.disks,
7187 disk_template=self.op.disk_template,
7191 vcpus=self.op.vcpus,
7192 hypervisor=self.op.hypervisor,
7195 ial = IAllocator(self,
7198 relocate_from=list(self.relocate_from),
7201 if self.op.direction == constants.IALLOCATOR_DIR_IN:
7202 result = ial.in_text
7204 ial.Run(self.op.allocator, validate=False)
7205 result = ial.out_text