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.
65 def __init__(self, processor, op, context, rpc):
66 """Constructor for LogicalUnit.
68 This needs to be overridden in derived classes in order to check op
74 self.cfg = context.cfg
75 self.context = context
77 # Dicts used to declare locking needs to mcpu
78 self.needed_locks = None
79 self.acquired_locks = {}
80 self.share_locks = dict(((i, 0) for i in locking.LEVELS))
82 self.remove_locks = {}
83 # Used to force good behavior when calling helper functions
84 self.recalculate_locks = {}
87 self.LogWarning = processor.LogWarning
88 self.LogInfo = processor.LogInfo
90 for attr_name in self._OP_REQP:
91 attr_val = getattr(op, attr_name, None)
93 raise errors.OpPrereqError("Required parameter '%s' missing" %
98 """Returns the SshRunner object
102 self.__ssh = ssh.SshRunner(self.cfg.GetClusterName())
105 ssh = property(fget=__GetSSH)
107 def CheckArguments(self):
108 """Check syntactic validity for the opcode arguments.
110 This method is for doing a simple syntactic check and ensure
111 validity of opcode parameters, without any cluster-related
112 checks. While the same can be accomplished in ExpandNames and/or
113 CheckPrereq, doing these separate is better because:
115 - ExpandNames is left as as purely a lock-related function
116 - CheckPrereq is run after we have acquired locks (and possible
119 The function is allowed to change the self.op attribute so that
120 later methods can no longer worry about missing parameters.
125 def ExpandNames(self):
126 """Expand names for this LU.
128 This method is called before starting to execute the opcode, and it should
129 update all the parameters of the opcode to their canonical form (e.g. a
130 short node name must be fully expanded after this method has successfully
131 completed). This way locking, hooks, logging, ecc. can work correctly.
133 LUs which implement this method must also populate the self.needed_locks
134 member, as a dict with lock levels as keys, and a list of needed lock names
137 - use an empty dict if you don't need any lock
138 - if you don't need any lock at a particular level omit that level
139 - don't put anything for the BGL level
140 - if you want all locks at a level use locking.ALL_SET as a value
142 If you need to share locks (rather than acquire them exclusively) at one
143 level you can modify self.share_locks, setting a true value (usually 1) for
144 that level. By default locks are not shared.
148 # Acquire all nodes and one instance
149 self.needed_locks = {
150 locking.LEVEL_NODE: locking.ALL_SET,
151 locking.LEVEL_INSTANCE: ['instance1.example.tld'],
153 # Acquire just two nodes
154 self.needed_locks = {
155 locking.LEVEL_NODE: ['node1.example.tld', 'node2.example.tld'],
158 self.needed_locks = {} # No, you can't leave it to the default value None
161 # The implementation of this method is mandatory only if the new LU is
162 # concurrent, so that old LUs don't need to be changed all at the same
165 self.needed_locks = {} # Exclusive LUs don't need locks.
167 raise NotImplementedError
169 def DeclareLocks(self, level):
170 """Declare LU locking needs for a level
172 While most LUs can just declare their locking needs at ExpandNames time,
173 sometimes there's the need to calculate some locks after having acquired
174 the ones before. This function is called just before acquiring locks at a
175 particular level, but after acquiring the ones at lower levels, and permits
176 such calculations. It can be used to modify self.needed_locks, and by
177 default it does nothing.
179 This function is only called if you have something already set in
180 self.needed_locks for the level.
182 @param level: Locking level which is going to be locked
183 @type level: member of ganeti.locking.LEVELS
187 def CheckPrereq(self):
188 """Check prerequisites for this LU.
190 This method should check that the prerequisites for the execution
191 of this LU are fulfilled. It can do internode communication, but
192 it should be idempotent - no cluster or system changes are
195 The method should raise errors.OpPrereqError in case something is
196 not fulfilled. Its return value is ignored.
198 This method should also update all the parameters of the opcode to
199 their canonical form if it hasn't been done by ExpandNames before.
202 raise NotImplementedError
204 def Exec(self, feedback_fn):
207 This method should implement the actual work. It should raise
208 errors.OpExecError for failures that are somewhat dealt with in
212 raise NotImplementedError
214 def BuildHooksEnv(self):
215 """Build hooks environment for this LU.
217 This method should return a three-node tuple consisting of: a dict
218 containing the environment that will be used for running the
219 specific hook for this LU, a list of node names on which the hook
220 should run before the execution, and a list of node names on which
221 the hook should run after the execution.
223 The keys of the dict must not have 'GANETI_' prefixed as this will
224 be handled in the hooks runner. Also note additional keys will be
225 added by the hooks runner. If the LU doesn't define any
226 environment, an empty dict (and not None) should be returned.
228 No nodes should be returned as an empty list (and not None).
230 Note that if the HPATH for a LU class is None, this function will
234 raise NotImplementedError
236 def HooksCallBack(self, phase, hook_results, feedback_fn, lu_result):
237 """Notify the LU about the results of its hooks.
239 This method is called every time a hooks phase is executed, and notifies
240 the Logical Unit about the hooks' result. The LU can then use it to alter
241 its result based on the hooks. By default the method does nothing and the
242 previous result is passed back unchanged but any LU can define it if it
243 wants to use the local cluster hook-scripts somehow.
245 @param phase: one of L{constants.HOOKS_PHASE_POST} or
246 L{constants.HOOKS_PHASE_PRE}; it denotes the hooks phase
247 @param hook_results: the results of the multi-node hooks rpc call
248 @param feedback_fn: function used send feedback back to the caller
249 @param lu_result: the previous Exec result this LU had, or None
251 @return: the new Exec result, based on the previous result
257 def _ExpandAndLockInstance(self):
258 """Helper function to expand and lock an instance.
260 Many LUs that work on an instance take its name in self.op.instance_name
261 and need to expand it and then declare the expanded name for locking. This
262 function does it, and then updates self.op.instance_name to the expanded
263 name. It also initializes needed_locks as a dict, if this hasn't been done
267 if self.needed_locks is None:
268 self.needed_locks = {}
270 assert locking.LEVEL_INSTANCE not in self.needed_locks, \
271 "_ExpandAndLockInstance called with instance-level locks set"
272 expanded_name = self.cfg.ExpandInstanceName(self.op.instance_name)
273 if expanded_name is None:
274 raise errors.OpPrereqError("Instance '%s' not known" %
275 self.op.instance_name)
276 self.needed_locks[locking.LEVEL_INSTANCE] = expanded_name
277 self.op.instance_name = expanded_name
279 def _LockInstancesNodes(self, primary_only=False):
280 """Helper function to declare instances' nodes for locking.
282 This function should be called after locking one or more instances to lock
283 their nodes. Its effect is populating self.needed_locks[locking.LEVEL_NODE]
284 with all primary or secondary nodes for instances already locked and
285 present in self.needed_locks[locking.LEVEL_INSTANCE].
287 It should be called from DeclareLocks, and for safety only works if
288 self.recalculate_locks[locking.LEVEL_NODE] is set.
290 In the future it may grow parameters to just lock some instance's nodes, or
291 to just lock primaries or secondary nodes, if needed.
293 If should be called in DeclareLocks in a way similar to::
295 if level == locking.LEVEL_NODE:
296 self._LockInstancesNodes()
298 @type primary_only: boolean
299 @param primary_only: only lock primary nodes of locked instances
302 assert locking.LEVEL_NODE in self.recalculate_locks, \
303 "_LockInstancesNodes helper function called with no nodes to recalculate"
305 # TODO: check if we're really been called with the instance locks held
307 # For now we'll replace self.needed_locks[locking.LEVEL_NODE], but in the
308 # future we might want to have different behaviors depending on the value
309 # of self.recalculate_locks[locking.LEVEL_NODE]
311 for instance_name in self.acquired_locks[locking.LEVEL_INSTANCE]:
312 instance = self.context.cfg.GetInstanceInfo(instance_name)
313 wanted_nodes.append(instance.primary_node)
315 wanted_nodes.extend(instance.secondary_nodes)
317 if self.recalculate_locks[locking.LEVEL_NODE] == constants.LOCKS_REPLACE:
318 self.needed_locks[locking.LEVEL_NODE] = wanted_nodes
319 elif self.recalculate_locks[locking.LEVEL_NODE] == constants.LOCKS_APPEND:
320 self.needed_locks[locking.LEVEL_NODE].extend(wanted_nodes)
322 del self.recalculate_locks[locking.LEVEL_NODE]
325 class NoHooksLU(LogicalUnit):
326 """Simple LU which runs no hooks.
328 This LU is intended as a parent for other LogicalUnits which will
329 run no hooks, in order to reduce duplicate code.
336 def _GetWantedNodes(lu, nodes):
337 """Returns list of checked and expanded node names.
339 @type lu: L{LogicalUnit}
340 @param lu: the logical unit on whose behalf we execute
342 @param nodes: list of node names or None for all nodes
344 @return: the list of nodes, sorted
345 @raise errors.OpProgrammerError: if the nodes parameter is wrong type
348 if not isinstance(nodes, list):
349 raise errors.OpPrereqError("Invalid argument type 'nodes'")
352 raise errors.ProgrammerError("_GetWantedNodes should only be called with a"
353 " non-empty list of nodes whose name is to be expanded.")
357 node = lu.cfg.ExpandNodeName(name)
359 raise errors.OpPrereqError("No such node name '%s'" % name)
362 return utils.NiceSort(wanted)
365 def _GetWantedInstances(lu, instances):
366 """Returns list of checked and expanded instance names.
368 @type lu: L{LogicalUnit}
369 @param lu: the logical unit on whose behalf we execute
370 @type instances: list
371 @param instances: list of instance names or None for all instances
373 @return: the list of instances, sorted
374 @raise errors.OpPrereqError: if the instances parameter is wrong type
375 @raise errors.OpPrereqError: if any of the passed instances is not found
378 if not isinstance(instances, list):
379 raise errors.OpPrereqError("Invalid argument type 'instances'")
384 for name in instances:
385 instance = lu.cfg.ExpandInstanceName(name)
387 raise errors.OpPrereqError("No such instance name '%s'" % name)
388 wanted.append(instance)
391 wanted = utils.NiceSort(lu.cfg.GetInstanceList())
395 def _CheckOutputFields(static, dynamic, selected):
396 """Checks whether all selected fields are valid.
398 @type static: L{utils.FieldSet}
399 @param static: static fields set
400 @type dynamic: L{utils.FieldSet}
401 @param dynamic: dynamic fields set
408 delta = f.NonMatching(selected)
410 raise errors.OpPrereqError("Unknown output fields selected: %s"
414 def _CheckBooleanOpField(op, name):
415 """Validates boolean opcode parameters.
417 This will ensure that an opcode parameter is either a boolean value,
418 or None (but that it always exists).
421 val = getattr(op, name, None)
422 if not (val is None or isinstance(val, bool)):
423 raise errors.OpPrereqError("Invalid boolean parameter '%s' (%s)" %
425 setattr(op, name, val)
428 def _CheckNodeOnline(lu, node):
429 """Ensure that a given node is online.
431 @param lu: the LU on behalf of which we make the check
432 @param node: the node to check
433 @raise errors.OpPrereqError: if the node is offline
436 if lu.cfg.GetNodeInfo(node).offline:
437 raise errors.OpPrereqError("Can't use offline node %s" % node)
440 def _CheckNodeNotDrained(lu, node):
441 """Ensure that a given node is not drained.
443 @param lu: the LU on behalf of which we make the check
444 @param node: the node to check
445 @raise errors.OpPrereqError: if the node is drained
448 if lu.cfg.GetNodeInfo(node).drained:
449 raise errors.OpPrereqError("Can't use drained node %s" % node)
452 def _BuildInstanceHookEnv(name, primary_node, secondary_nodes, os_type, status,
453 memory, vcpus, nics, disk_template, disks,
454 bep, hvp, hypervisor_name):
455 """Builds instance related env variables for hooks
457 This builds the hook environment from individual variables.
460 @param name: the name of the instance
461 @type primary_node: string
462 @param primary_node: the name of the instance's primary node
463 @type secondary_nodes: list
464 @param secondary_nodes: list of secondary nodes as strings
465 @type os_type: string
466 @param os_type: the name of the instance's OS
467 @type status: boolean
468 @param status: the should_run status of the instance
470 @param memory: the memory size of the instance
472 @param vcpus: the count of VCPUs the instance has
474 @param nics: list of tuples (ip, bridge, mac) representing
475 the NICs the instance has
476 @type disk_template: string
477 @param disk_template: the disk template of the instance
479 @param disks: the list of (size, mode) pairs
481 @param bep: the backend parameters for the instance
483 @param hvp: the hypervisor parameters for the instance
484 @type hypervisor_name: string
485 @param hypervisor_name: the hypervisor for the instance
487 @return: the hook environment for this instance
496 "INSTANCE_NAME": name,
497 "INSTANCE_PRIMARY": primary_node,
498 "INSTANCE_SECONDARIES": " ".join(secondary_nodes),
499 "INSTANCE_OS_TYPE": os_type,
500 "INSTANCE_STATUS": str_status,
501 "INSTANCE_MEMORY": memory,
502 "INSTANCE_VCPUS": vcpus,
503 "INSTANCE_DISK_TEMPLATE": disk_template,
504 "INSTANCE_HYPERVISOR": hypervisor_name,
508 nic_count = len(nics)
509 for idx, (ip, bridge, mac) in enumerate(nics):
512 env["INSTANCE_NIC%d_IP" % idx] = ip
513 env["INSTANCE_NIC%d_BRIDGE" % idx] = bridge
514 env["INSTANCE_NIC%d_MAC" % idx] = mac
518 env["INSTANCE_NIC_COUNT"] = nic_count
521 disk_count = len(disks)
522 for idx, (size, mode) in enumerate(disks):
523 env["INSTANCE_DISK%d_SIZE" % idx] = size
524 env["INSTANCE_DISK%d_MODE" % idx] = mode
528 env["INSTANCE_DISK_COUNT"] = disk_count
530 for source, kind in [(bep, "BE"), (hvp, "HV")]:
531 for key, value in source.items():
532 env["INSTANCE_%s_%s" % (kind, key)] = value
537 def _BuildInstanceHookEnvByObject(lu, instance, override=None):
538 """Builds instance related env variables for hooks from an object.
540 @type lu: L{LogicalUnit}
541 @param lu: the logical unit on whose behalf we execute
542 @type instance: L{objects.Instance}
543 @param instance: the instance for which we should build the
546 @param override: dictionary with key/values that will override
549 @return: the hook environment dictionary
552 cluster = lu.cfg.GetClusterInfo()
553 bep = cluster.FillBE(instance)
554 hvp = cluster.FillHV(instance)
556 'name': instance.name,
557 'primary_node': instance.primary_node,
558 'secondary_nodes': instance.secondary_nodes,
559 'os_type': instance.os,
560 'status': instance.admin_up,
561 'memory': bep[constants.BE_MEMORY],
562 'vcpus': bep[constants.BE_VCPUS],
563 'nics': [(nic.ip, nic.bridge, nic.mac) for nic in instance.nics],
564 'disk_template': instance.disk_template,
565 'disks': [(disk.size, disk.mode) for disk in instance.disks],
568 'hypervisor_name': instance.hypervisor,
571 args.update(override)
572 return _BuildInstanceHookEnv(**args)
575 def _AdjustCandidatePool(lu):
576 """Adjust the candidate pool after node operations.
579 mod_list = lu.cfg.MaintainCandidatePool()
581 lu.LogInfo("Promoted nodes to master candidate role: %s",
582 ", ".join(node.name for node in mod_list))
583 for name in mod_list:
584 lu.context.ReaddNode(name)
585 mc_now, mc_max = lu.cfg.GetMasterCandidateStats()
587 lu.LogInfo("Note: more nodes are candidates (%d) than desired (%d)" %
591 def _CheckInstanceBridgesExist(lu, instance):
592 """Check that the bridges needed by an instance exist.
595 # check bridges existence
596 brlist = [nic.bridge for nic in instance.nics]
597 result = lu.rpc.call_bridges_exist(instance.primary_node, brlist)
600 raise errors.OpPrereqError("One or more target bridges %s does not"
601 " exist on destination node '%s'" %
602 (brlist, instance.primary_node))
605 class LUDestroyCluster(NoHooksLU):
606 """Logical unit for destroying the cluster.
611 def CheckPrereq(self):
612 """Check prerequisites.
614 This checks whether the cluster is empty.
616 Any errors are signaled by raising errors.OpPrereqError.
619 master = self.cfg.GetMasterNode()
621 nodelist = self.cfg.GetNodeList()
622 if len(nodelist) != 1 or nodelist[0] != master:
623 raise errors.OpPrereqError("There are still %d node(s) in"
624 " this cluster." % (len(nodelist) - 1))
625 instancelist = self.cfg.GetInstanceList()
627 raise errors.OpPrereqError("There are still %d instance(s) in"
628 " this cluster." % len(instancelist))
630 def Exec(self, feedback_fn):
631 """Destroys the cluster.
634 master = self.cfg.GetMasterNode()
635 result = self.rpc.call_node_stop_master(master, False)
638 raise errors.OpExecError("Could not disable the master role")
639 priv_key, pub_key, _ = ssh.GetUserFiles(constants.GANETI_RUNAS)
640 utils.CreateBackup(priv_key)
641 utils.CreateBackup(pub_key)
645 class LUVerifyCluster(LogicalUnit):
646 """Verifies the cluster status.
649 HPATH = "cluster-verify"
650 HTYPE = constants.HTYPE_CLUSTER
651 _OP_REQP = ["skip_checks"]
654 def ExpandNames(self):
655 self.needed_locks = {
656 locking.LEVEL_NODE: locking.ALL_SET,
657 locking.LEVEL_INSTANCE: locking.ALL_SET,
659 self.share_locks = dict(((i, 1) for i in locking.LEVELS))
661 def _VerifyNode(self, nodeinfo, file_list, local_cksum,
662 node_result, feedback_fn, master_files,
664 """Run multiple tests against a node.
668 - compares ganeti version
669 - checks vg existence and size > 20G
670 - checks config file checksum
671 - checks ssh to other nodes
673 @type nodeinfo: L{objects.Node}
674 @param nodeinfo: the node to check
675 @param file_list: required list of files
676 @param local_cksum: dictionary of local files and their checksums
677 @param node_result: the results from the node
678 @param feedback_fn: function used to accumulate results
679 @param master_files: list of files that only masters should have
680 @param drbd_map: the useddrbd minors for this node, in
681 form of minor: (instance, must_exist) which correspond to instances
682 and their running status
683 @param vg_name: Ganeti Volume Group (result of self.cfg.GetVGName())
688 # main result, node_result should be a non-empty dict
689 if not node_result or not isinstance(node_result, dict):
690 feedback_fn(" - ERROR: unable to verify node %s." % (node,))
693 # compares ganeti version
694 local_version = constants.PROTOCOL_VERSION
695 remote_version = node_result.get('version', None)
696 if not (remote_version and isinstance(remote_version, (list, tuple)) and
697 len(remote_version) == 2):
698 feedback_fn(" - ERROR: connection to %s failed" % (node))
701 if local_version != remote_version[0]:
702 feedback_fn(" - ERROR: incompatible protocol versions: master %s,"
703 " node %s %s" % (local_version, node, remote_version[0]))
706 # node seems compatible, we can actually try to look into its results
710 # full package version
711 if constants.RELEASE_VERSION != remote_version[1]:
712 feedback_fn(" - WARNING: software version mismatch: master %s,"
714 (constants.RELEASE_VERSION, node, remote_version[1]))
716 # checks vg existence and size > 20G
717 if vg_name is not None:
718 vglist = node_result.get(constants.NV_VGLIST, None)
720 feedback_fn(" - ERROR: unable to check volume groups on node %s." %
724 vgstatus = utils.CheckVolumeGroupSize(vglist, vg_name,
725 constants.MIN_VG_SIZE)
727 feedback_fn(" - ERROR: %s on node %s" % (vgstatus, node))
730 # checks config file checksum
732 remote_cksum = node_result.get(constants.NV_FILELIST, None)
733 if not isinstance(remote_cksum, dict):
735 feedback_fn(" - ERROR: node hasn't returned file checksum data")
737 for file_name in file_list:
738 node_is_mc = nodeinfo.master_candidate
739 must_have_file = file_name not in master_files
740 if file_name not in remote_cksum:
741 if node_is_mc or must_have_file:
743 feedback_fn(" - ERROR: file '%s' missing" % file_name)
744 elif remote_cksum[file_name] != local_cksum[file_name]:
745 if node_is_mc or must_have_file:
747 feedback_fn(" - ERROR: file '%s' has wrong checksum" % file_name)
749 # not candidate and this is not a must-have file
751 feedback_fn(" - ERROR: file '%s' should not exist on non master"
752 " candidates (and the file is outdated)" % file_name)
754 # all good, except non-master/non-must have combination
755 if not node_is_mc and not must_have_file:
756 feedback_fn(" - ERROR: file '%s' should not exist on non master"
757 " candidates" % file_name)
761 if constants.NV_NODELIST not in node_result:
763 feedback_fn(" - ERROR: node hasn't returned node ssh connectivity data")
765 if node_result[constants.NV_NODELIST]:
767 for node in node_result[constants.NV_NODELIST]:
768 feedback_fn(" - ERROR: ssh communication with node '%s': %s" %
769 (node, node_result[constants.NV_NODELIST][node]))
771 if constants.NV_NODENETTEST not in node_result:
773 feedback_fn(" - ERROR: node hasn't returned node tcp connectivity data")
775 if node_result[constants.NV_NODENETTEST]:
777 nlist = utils.NiceSort(node_result[constants.NV_NODENETTEST].keys())
779 feedback_fn(" - ERROR: tcp communication with node '%s': %s" %
780 (node, node_result[constants.NV_NODENETTEST][node]))
782 hyp_result = node_result.get(constants.NV_HYPERVISOR, None)
783 if isinstance(hyp_result, dict):
784 for hv_name, hv_result in hyp_result.iteritems():
785 if hv_result is not None:
786 feedback_fn(" - ERROR: hypervisor %s verify failure: '%s'" %
787 (hv_name, hv_result))
789 # check used drbd list
790 if vg_name is not None:
791 used_minors = node_result.get(constants.NV_DRBDLIST, [])
792 if not isinstance(used_minors, (tuple, list)):
793 feedback_fn(" - ERROR: cannot parse drbd status file: %s" %
796 for minor, (iname, must_exist) in drbd_map.items():
797 if minor not in used_minors and must_exist:
798 feedback_fn(" - ERROR: drbd minor %d of instance %s is"
799 " not active" % (minor, iname))
801 for minor in used_minors:
802 if minor not in drbd_map:
803 feedback_fn(" - ERROR: unallocated drbd minor %d is in use" %
809 def _VerifyInstance(self, instance, instanceconfig, node_vol_is,
810 node_instance, feedback_fn, n_offline):
811 """Verify an instance.
813 This function checks to see if the required block devices are
814 available on the instance's node.
819 node_current = instanceconfig.primary_node
822 instanceconfig.MapLVsByNode(node_vol_should)
824 for node in node_vol_should:
825 if node in n_offline:
826 # ignore missing volumes on offline nodes
828 for volume in node_vol_should[node]:
829 if node not in node_vol_is or volume not in node_vol_is[node]:
830 feedback_fn(" - ERROR: volume %s missing on node %s" %
834 if instanceconfig.admin_up:
835 if ((node_current not in node_instance or
836 not instance in node_instance[node_current]) and
837 node_current not in n_offline):
838 feedback_fn(" - ERROR: instance %s not running on node %s" %
839 (instance, node_current))
842 for node in node_instance:
843 if (not node == node_current):
844 if instance in node_instance[node]:
845 feedback_fn(" - ERROR: instance %s should not run on node %s" %
851 def _VerifyOrphanVolumes(self, node_vol_should, node_vol_is, feedback_fn):
852 """Verify if there are any unknown volumes in the cluster.
854 The .os, .swap and backup volumes are ignored. All other volumes are
860 for node in node_vol_is:
861 for volume in node_vol_is[node]:
862 if node not in node_vol_should or volume not in node_vol_should[node]:
863 feedback_fn(" - ERROR: volume %s on node %s should not exist" %
868 def _VerifyOrphanInstances(self, instancelist, node_instance, feedback_fn):
869 """Verify the list of running instances.
871 This checks what instances are running but unknown to the cluster.
875 for node in node_instance:
876 for runninginstance in node_instance[node]:
877 if runninginstance not in instancelist:
878 feedback_fn(" - ERROR: instance %s on node %s should not exist" %
879 (runninginstance, node))
883 def _VerifyNPlusOneMemory(self, node_info, instance_cfg, feedback_fn):
884 """Verify N+1 Memory Resilience.
886 Check that if one single node dies we can still start all the instances it
892 for node, nodeinfo in node_info.iteritems():
893 # This code checks that every node which is now listed as secondary has
894 # enough memory to host all instances it is supposed to should a single
895 # other node in the cluster fail.
896 # FIXME: not ready for failover to an arbitrary node
897 # FIXME: does not support file-backed instances
898 # WARNING: we currently take into account down instances as well as up
899 # ones, considering that even if they're down someone might want to start
900 # them even in the event of a node failure.
901 for prinode, instances in nodeinfo['sinst-by-pnode'].iteritems():
903 for instance in instances:
904 bep = self.cfg.GetClusterInfo().FillBE(instance_cfg[instance])
905 if bep[constants.BE_AUTO_BALANCE]:
906 needed_mem += bep[constants.BE_MEMORY]
907 if nodeinfo['mfree'] < needed_mem:
908 feedback_fn(" - ERROR: not enough memory on node %s to accommodate"
909 " failovers should node %s fail" % (node, prinode))
913 def CheckPrereq(self):
914 """Check prerequisites.
916 Transform the list of checks we're going to skip into a set and check that
917 all its members are valid.
920 self.skip_set = frozenset(self.op.skip_checks)
921 if not constants.VERIFY_OPTIONAL_CHECKS.issuperset(self.skip_set):
922 raise errors.OpPrereqError("Invalid checks to be skipped specified")
924 def BuildHooksEnv(self):
927 Cluster-Verify hooks just ran in the post phase and their failure makes
928 the output be logged in the verify output and the verification to fail.
931 all_nodes = self.cfg.GetNodeList()
933 "CLUSTER_TAGS": " ".join(self.cfg.GetClusterInfo().GetTags())
935 for node in self.cfg.GetAllNodesInfo().values():
936 env["NODE_TAGS_%s" % node.name] = " ".join(node.GetTags())
938 return env, [], all_nodes
940 def Exec(self, feedback_fn):
941 """Verify integrity of cluster, performing various test on nodes.
945 feedback_fn("* Verifying global settings")
946 for msg in self.cfg.VerifyConfig():
947 feedback_fn(" - ERROR: %s" % msg)
949 vg_name = self.cfg.GetVGName()
950 hypervisors = self.cfg.GetClusterInfo().enabled_hypervisors
951 nodelist = utils.NiceSort(self.cfg.GetNodeList())
952 nodeinfo = [self.cfg.GetNodeInfo(nname) for nname in nodelist]
953 instancelist = utils.NiceSort(self.cfg.GetInstanceList())
954 instanceinfo = dict((iname, self.cfg.GetInstanceInfo(iname))
955 for iname in instancelist)
956 i_non_redundant = [] # Non redundant instances
957 i_non_a_balanced = [] # Non auto-balanced instances
958 n_offline = [] # List of offline nodes
959 n_drained = [] # List of nodes being drained
965 # FIXME: verify OS list
967 master_files = [constants.CLUSTER_CONF_FILE]
969 file_names = ssconf.SimpleStore().GetFileList()
970 file_names.append(constants.SSL_CERT_FILE)
971 file_names.append(constants.RAPI_CERT_FILE)
972 file_names.extend(master_files)
974 local_checksums = utils.FingerprintFiles(file_names)
976 feedback_fn("* Gathering data (%d nodes)" % len(nodelist))
977 node_verify_param = {
978 constants.NV_FILELIST: file_names,
979 constants.NV_NODELIST: [node.name for node in nodeinfo
980 if not node.offline],
981 constants.NV_HYPERVISOR: hypervisors,
982 constants.NV_NODENETTEST: [(node.name, node.primary_ip,
983 node.secondary_ip) for node in nodeinfo
984 if not node.offline],
985 constants.NV_INSTANCELIST: hypervisors,
986 constants.NV_VERSION: None,
987 constants.NV_HVINFO: self.cfg.GetHypervisorType(),
989 if vg_name is not None:
990 node_verify_param[constants.NV_VGLIST] = None
991 node_verify_param[constants.NV_LVLIST] = vg_name
992 node_verify_param[constants.NV_DRBDLIST] = None
993 all_nvinfo = self.rpc.call_node_verify(nodelist, node_verify_param,
994 self.cfg.GetClusterName())
996 cluster = self.cfg.GetClusterInfo()
997 master_node = self.cfg.GetMasterNode()
998 all_drbd_map = self.cfg.ComputeDRBDMap()
1000 for node_i in nodeinfo:
1002 nresult = all_nvinfo[node].data
1005 feedback_fn("* Skipping offline node %s" % (node,))
1006 n_offline.append(node)
1009 if node == master_node:
1011 elif node_i.master_candidate:
1012 ntype = "master candidate"
1013 elif node_i.drained:
1015 n_drained.append(node)
1018 feedback_fn("* Verifying node %s (%s)" % (node, ntype))
1020 if all_nvinfo[node].failed or not isinstance(nresult, dict):
1021 feedback_fn(" - ERROR: connection to %s failed" % (node,))
1026 for minor, instance in all_drbd_map[node].items():
1027 if instance not in instanceinfo:
1028 feedback_fn(" - ERROR: ghost instance '%s' in temporary DRBD map" %
1030 # ghost instance should not be running, but otherwise we
1031 # don't give double warnings (both ghost instance and
1032 # unallocated minor in use)
1033 node_drbd[minor] = (instance, False)
1035 instance = instanceinfo[instance]
1036 node_drbd[minor] = (instance.name, instance.admin_up)
1037 result = self._VerifyNode(node_i, file_names, local_checksums,
1038 nresult, feedback_fn, master_files,
1042 lvdata = nresult.get(constants.NV_LVLIST, "Missing LV data")
1044 node_volume[node] = {}
1045 elif isinstance(lvdata, basestring):
1046 feedback_fn(" - ERROR: LVM problem on node %s: %s" %
1047 (node, utils.SafeEncode(lvdata)))
1049 node_volume[node] = {}
1050 elif not isinstance(lvdata, dict):
1051 feedback_fn(" - ERROR: connection to %s failed (lvlist)" % (node,))
1055 node_volume[node] = lvdata
1058 idata = nresult.get(constants.NV_INSTANCELIST, None)
1059 if not isinstance(idata, list):
1060 feedback_fn(" - ERROR: connection to %s failed (instancelist)" %
1065 node_instance[node] = idata
1068 nodeinfo = nresult.get(constants.NV_HVINFO, None)
1069 if not isinstance(nodeinfo, dict):
1070 feedback_fn(" - ERROR: connection to %s failed (hvinfo)" % (node,))
1076 "mfree": int(nodeinfo['memory_free']),
1079 # dictionary holding all instances this node is secondary for,
1080 # grouped by their primary node. Each key is a cluster node, and each
1081 # value is a list of instances which have the key as primary and the
1082 # current node as secondary. this is handy to calculate N+1 memory
1083 # availability if you can only failover from a primary to its
1085 "sinst-by-pnode": {},
1087 # FIXME: devise a free space model for file based instances as well
1088 if vg_name is not None:
1089 if (constants.NV_VGLIST not in nresult or
1090 vg_name not in nresult[constants.NV_VGLIST]):
1091 feedback_fn(" - ERROR: node %s didn't return data for the"
1092 " volume group '%s' - it is either missing or broken" %
1096 node_info[node]["dfree"] = int(nresult[constants.NV_VGLIST][vg_name])
1097 except (ValueError, KeyError):
1098 feedback_fn(" - ERROR: invalid nodeinfo value returned"
1099 " from node %s" % (node,))
1103 node_vol_should = {}
1105 for instance in instancelist:
1106 feedback_fn("* Verifying instance %s" % instance)
1107 inst_config = instanceinfo[instance]
1108 result = self._VerifyInstance(instance, inst_config, node_volume,
1109 node_instance, feedback_fn, n_offline)
1111 inst_nodes_offline = []
1113 inst_config.MapLVsByNode(node_vol_should)
1115 instance_cfg[instance] = inst_config
1117 pnode = inst_config.primary_node
1118 if pnode in node_info:
1119 node_info[pnode]['pinst'].append(instance)
1120 elif pnode not in n_offline:
1121 feedback_fn(" - ERROR: instance %s, connection to primary node"
1122 " %s failed" % (instance, pnode))
1125 if pnode in n_offline:
1126 inst_nodes_offline.append(pnode)
1128 # If the instance is non-redundant we cannot survive losing its primary
1129 # node, so we are not N+1 compliant. On the other hand we have no disk
1130 # templates with more than one secondary so that situation is not well
1132 # FIXME: does not support file-backed instances
1133 if len(inst_config.secondary_nodes) == 0:
1134 i_non_redundant.append(instance)
1135 elif len(inst_config.secondary_nodes) > 1:
1136 feedback_fn(" - WARNING: multiple secondaries for instance %s"
1139 if not cluster.FillBE(inst_config)[constants.BE_AUTO_BALANCE]:
1140 i_non_a_balanced.append(instance)
1142 for snode in inst_config.secondary_nodes:
1143 if snode in node_info:
1144 node_info[snode]['sinst'].append(instance)
1145 if pnode not in node_info[snode]['sinst-by-pnode']:
1146 node_info[snode]['sinst-by-pnode'][pnode] = []
1147 node_info[snode]['sinst-by-pnode'][pnode].append(instance)
1148 elif snode not in n_offline:
1149 feedback_fn(" - ERROR: instance %s, connection to secondary node"
1150 " %s failed" % (instance, snode))
1152 if snode in n_offline:
1153 inst_nodes_offline.append(snode)
1155 if inst_nodes_offline:
1156 # warn that the instance lives on offline nodes, and set bad=True
1157 feedback_fn(" - ERROR: instance lives on offline node(s) %s" %
1158 ", ".join(inst_nodes_offline))
1161 feedback_fn("* Verifying orphan volumes")
1162 result = self._VerifyOrphanVolumes(node_vol_should, node_volume,
1166 feedback_fn("* Verifying remaining instances")
1167 result = self._VerifyOrphanInstances(instancelist, node_instance,
1171 if constants.VERIFY_NPLUSONE_MEM not in self.skip_set:
1172 feedback_fn("* Verifying N+1 Memory redundancy")
1173 result = self._VerifyNPlusOneMemory(node_info, instance_cfg, feedback_fn)
1176 feedback_fn("* Other Notes")
1178 feedback_fn(" - NOTICE: %d non-redundant instance(s) found."
1179 % len(i_non_redundant))
1181 if i_non_a_balanced:
1182 feedback_fn(" - NOTICE: %d non-auto-balanced instance(s) found."
1183 % len(i_non_a_balanced))
1186 feedback_fn(" - NOTICE: %d offline node(s) found." % len(n_offline))
1189 feedback_fn(" - NOTICE: %d drained node(s) found." % len(n_drained))
1193 def HooksCallBack(self, phase, hooks_results, feedback_fn, lu_result):
1194 """Analyze the post-hooks' result
1196 This method analyses the hook result, handles it, and sends some
1197 nicely-formatted feedback back to the user.
1199 @param phase: one of L{constants.HOOKS_PHASE_POST} or
1200 L{constants.HOOKS_PHASE_PRE}; it denotes the hooks phase
1201 @param hooks_results: the results of the multi-node hooks rpc call
1202 @param feedback_fn: function used send feedback back to the caller
1203 @param lu_result: previous Exec result
1204 @return: the new Exec result, based on the previous result
1208 # We only really run POST phase hooks, and are only interested in
1210 if phase == constants.HOOKS_PHASE_POST:
1211 # Used to change hooks' output to proper indentation
1212 indent_re = re.compile('^', re.M)
1213 feedback_fn("* Hooks Results")
1214 if not hooks_results:
1215 feedback_fn(" - ERROR: general communication failure")
1218 for node_name in hooks_results:
1219 show_node_header = True
1220 res = hooks_results[node_name]
1221 if res.failed or res.data is False or not isinstance(res.data, list):
1223 # no need to warn or set fail return value
1225 feedback_fn(" Communication failure in hooks execution")
1228 for script, hkr, output in res.data:
1229 if hkr == constants.HKR_FAIL:
1230 # The node header is only shown once, if there are
1231 # failing hooks on that node
1232 if show_node_header:
1233 feedback_fn(" Node %s:" % node_name)
1234 show_node_header = False
1235 feedback_fn(" ERROR: Script %s failed, output:" % script)
1236 output = indent_re.sub(' ', output)
1237 feedback_fn("%s" % output)
1243 class LUVerifyDisks(NoHooksLU):
1244 """Verifies the cluster disks status.
1250 def ExpandNames(self):
1251 self.needed_locks = {
1252 locking.LEVEL_NODE: locking.ALL_SET,
1253 locking.LEVEL_INSTANCE: locking.ALL_SET,
1255 self.share_locks = dict(((i, 1) for i in locking.LEVELS))
1257 def CheckPrereq(self):
1258 """Check prerequisites.
1260 This has no prerequisites.
1265 def Exec(self, feedback_fn):
1266 """Verify integrity of cluster disks.
1269 result = res_nodes, res_nlvm, res_instances, res_missing = [], {}, [], {}
1271 vg_name = self.cfg.GetVGName()
1272 nodes = utils.NiceSort(self.cfg.GetNodeList())
1273 instances = [self.cfg.GetInstanceInfo(name)
1274 for name in self.cfg.GetInstanceList()]
1277 for inst in instances:
1279 if (not inst.admin_up or
1280 inst.disk_template not in constants.DTS_NET_MIRROR):
1282 inst.MapLVsByNode(inst_lvs)
1283 # transform { iname: {node: [vol,],},} to {(node, vol): iname}
1284 for node, vol_list in inst_lvs.iteritems():
1285 for vol in vol_list:
1286 nv_dict[(node, vol)] = inst
1291 node_lvs = self.rpc.call_volume_list(nodes, vg_name)
1295 lvs = node_lvs[node]
1298 self.LogWarning("Connection to node %s failed: %s" %
1302 if isinstance(lvs, basestring):
1303 logging.warning("Error enumerating LVs on node %s: %s", node, lvs)
1304 res_nlvm[node] = lvs
1306 elif not isinstance(lvs, dict):
1307 logging.warning("Connection to node %s failed or invalid data"
1309 res_nodes.append(node)
1312 for lv_name, (_, lv_inactive, lv_online) in lvs.iteritems():
1313 inst = nv_dict.pop((node, lv_name), None)
1314 if (not lv_online and inst is not None
1315 and inst.name not in res_instances):
1316 res_instances.append(inst.name)
1318 # any leftover items in nv_dict are missing LVs, let's arrange the
1320 for key, inst in nv_dict.iteritems():
1321 if inst.name not in res_missing:
1322 res_missing[inst.name] = []
1323 res_missing[inst.name].append(key)
1328 class LURepairDiskSizes(NoHooksLU):
1329 """Verifies the cluster disks sizes.
1332 _OP_REQP = ["instances"]
1335 def ExpandNames(self):
1337 if not isinstance(self.op.instances, list):
1338 raise errors.OpPrereqError("Invalid argument type 'instances'")
1340 if self.op.instances:
1341 self.wanted_names = []
1342 for name in self.op.instances:
1343 full_name = self.cfg.ExpandInstanceName(name)
1344 if full_name is None:
1345 raise errors.OpPrereqError("Instance '%s' not known" % name)
1346 self.wanted_names.append(full_name)
1347 self.needed_locks[locking.LEVEL_INSTANCE] = self.wanted_names
1348 self.needed_locks = {
1349 locking.LEVEL_NODE: [],
1350 locking.LEVEL_INSTANCE: self.wanted_names,
1352 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
1354 self.wanted_names = None
1355 self.needed_locks = {
1356 locking.LEVEL_NODE: locking.ALL_SET,
1357 locking.LEVEL_INSTANCE: locking.ALL_SET,
1359 self.share_locks = dict(((i, 1) for i in locking.LEVELS))
1361 def DeclareLocks(self, level):
1362 if level == locking.LEVEL_NODE and self.wanted_names is not None:
1363 self._LockInstancesNodes(primary_only=True)
1365 def CheckPrereq(self):
1366 """Check prerequisites.
1368 This only checks the optional instance list against the existing names.
1371 if self.wanted_names is None:
1372 self.wanted_names = self.acquired_locks[locking.LEVEL_INSTANCE]
1374 self.wanted_instances = [self.cfg.GetInstanceInfo(name) for name
1375 in self.wanted_names]
1377 def Exec(self, feedback_fn):
1378 """Verify the size of cluster disks.
1381 # TODO: check child disks too
1382 # TODO: check differences in size between primary/secondary nodes
1384 for instance in self.wanted_instances:
1385 pnode = instance.primary_node
1386 if pnode not in per_node_disks:
1387 per_node_disks[pnode] = []
1388 for idx, disk in enumerate(instance.disks):
1389 per_node_disks[pnode].append((instance, idx, disk))
1392 for node, dskl in per_node_disks.items():
1393 result = self.rpc.call_blockdev_getsizes(node, [v[2] for v in dskl])
1395 self.LogWarning("Failure in blockdev_getsizes call to node"
1396 " %s, ignoring", node)
1398 if len(result.data) != len(dskl):
1399 self.LogWarning("Invalid result from node %s, ignoring node results",
1402 for ((instance, idx, disk), size) in zip(dskl, result.data):
1404 self.LogWarning("Disk %d of instance %s did not return size"
1405 " information, ignoring", idx, instance.name)
1407 if not isinstance(size, (int, long)):
1408 self.LogWarning("Disk %d of instance %s did not return valid"
1409 " size information, ignoring", idx, instance.name)
1412 if size != disk.size:
1413 self.LogInfo("Disk %d of instance %s has mismatched size,"
1414 " correcting: recorded %d, actual %d", idx,
1415 instance.name, disk.size, size)
1417 self.cfg.Update(instance)
1418 changed.append((instance.name, idx, size))
1422 class LURenameCluster(LogicalUnit):
1423 """Rename the cluster.
1426 HPATH = "cluster-rename"
1427 HTYPE = constants.HTYPE_CLUSTER
1430 def BuildHooksEnv(self):
1435 "OP_TARGET": self.cfg.GetClusterName(),
1436 "NEW_NAME": self.op.name,
1438 mn = self.cfg.GetMasterNode()
1439 return env, [mn], [mn]
1441 def CheckPrereq(self):
1442 """Verify that the passed name is a valid one.
1445 hostname = utils.HostInfo(self.op.name)
1447 new_name = hostname.name
1448 self.ip = new_ip = hostname.ip
1449 old_name = self.cfg.GetClusterName()
1450 old_ip = self.cfg.GetMasterIP()
1451 if new_name == old_name and new_ip == old_ip:
1452 raise errors.OpPrereqError("Neither the name nor the IP address of the"
1453 " cluster has changed")
1454 if new_ip != old_ip:
1455 if utils.TcpPing(new_ip, constants.DEFAULT_NODED_PORT):
1456 raise errors.OpPrereqError("The given cluster IP address (%s) is"
1457 " reachable on the network. Aborting." %
1460 self.op.name = new_name
1462 def Exec(self, feedback_fn):
1463 """Rename the cluster.
1466 clustername = self.op.name
1469 # shutdown the master IP
1470 master = self.cfg.GetMasterNode()
1471 result = self.rpc.call_node_stop_master(master, False)
1472 if result.failed or not result.data:
1473 raise errors.OpExecError("Could not disable the master role")
1476 cluster = self.cfg.GetClusterInfo()
1477 cluster.cluster_name = clustername
1478 cluster.master_ip = ip
1479 self.cfg.Update(cluster)
1481 # update the known hosts file
1482 ssh.WriteKnownHostsFile(self.cfg, constants.SSH_KNOWN_HOSTS_FILE)
1483 node_list = self.cfg.GetNodeList()
1485 node_list.remove(master)
1488 result = self.rpc.call_upload_file(node_list,
1489 constants.SSH_KNOWN_HOSTS_FILE)
1490 for to_node, to_result in result.iteritems():
1491 if to_result.failed or not to_result.data:
1492 logging.error("Copy of file %s to node %s failed",
1493 constants.SSH_KNOWN_HOSTS_FILE, to_node)
1496 result = self.rpc.call_node_start_master(master, False, False)
1497 if result.failed or not result.data:
1498 self.LogWarning("Could not re-enable the master role on"
1499 " the master, please restart manually.")
1502 def _RecursiveCheckIfLVMBased(disk):
1503 """Check if the given disk or its children are lvm-based.
1505 @type disk: L{objects.Disk}
1506 @param disk: the disk to check
1508 @return: boolean indicating whether a LD_LV dev_type was found or not
1512 for chdisk in disk.children:
1513 if _RecursiveCheckIfLVMBased(chdisk):
1515 return disk.dev_type == constants.LD_LV
1518 class LUSetClusterParams(LogicalUnit):
1519 """Change the parameters of the cluster.
1522 HPATH = "cluster-modify"
1523 HTYPE = constants.HTYPE_CLUSTER
1527 def CheckArguments(self):
1531 if not hasattr(self.op, "candidate_pool_size"):
1532 self.op.candidate_pool_size = None
1533 if self.op.candidate_pool_size is not None:
1535 self.op.candidate_pool_size = int(self.op.candidate_pool_size)
1536 except (ValueError, TypeError), err:
1537 raise errors.OpPrereqError("Invalid candidate_pool_size value: %s" %
1539 if self.op.candidate_pool_size < 1:
1540 raise errors.OpPrereqError("At least one master candidate needed")
1542 def ExpandNames(self):
1543 # FIXME: in the future maybe other cluster params won't require checking on
1544 # all nodes to be modified.
1545 self.needed_locks = {
1546 locking.LEVEL_NODE: locking.ALL_SET,
1548 self.share_locks[locking.LEVEL_NODE] = 1
1550 def BuildHooksEnv(self):
1555 "OP_TARGET": self.cfg.GetClusterName(),
1556 "NEW_VG_NAME": self.op.vg_name,
1558 mn = self.cfg.GetMasterNode()
1559 return env, [mn], [mn]
1561 def CheckPrereq(self):
1562 """Check prerequisites.
1564 This checks whether the given params don't conflict and
1565 if the given volume group is valid.
1568 if self.op.vg_name is not None and not self.op.vg_name:
1569 instances = self.cfg.GetAllInstancesInfo().values()
1570 for inst in instances:
1571 for disk in inst.disks:
1572 if _RecursiveCheckIfLVMBased(disk):
1573 raise errors.OpPrereqError("Cannot disable lvm storage while"
1574 " lvm-based instances exist")
1576 node_list = self.acquired_locks[locking.LEVEL_NODE]
1578 # if vg_name not None, checks given volume group on all nodes
1580 vglist = self.rpc.call_vg_list(node_list)
1581 for node in node_list:
1582 if vglist[node].failed:
1583 # ignoring down node
1584 self.LogWarning("Node %s unreachable/error, ignoring" % node)
1586 vgstatus = utils.CheckVolumeGroupSize(vglist[node].data,
1588 constants.MIN_VG_SIZE)
1590 raise errors.OpPrereqError("Error on node '%s': %s" %
1593 self.cluster = cluster = self.cfg.GetClusterInfo()
1594 # validate beparams changes
1595 if self.op.beparams:
1596 utils.ForceDictType(self.op.beparams, constants.BES_PARAMETER_TYPES)
1597 self.new_beparams = cluster.FillDict(
1598 cluster.beparams[constants.BEGR_DEFAULT], self.op.beparams)
1600 # hypervisor list/parameters
1601 self.new_hvparams = cluster.FillDict(cluster.hvparams, {})
1602 if self.op.hvparams:
1603 if not isinstance(self.op.hvparams, dict):
1604 raise errors.OpPrereqError("Invalid 'hvparams' parameter on input")
1605 for hv_name, hv_dict in self.op.hvparams.items():
1606 if hv_name not in self.new_hvparams:
1607 self.new_hvparams[hv_name] = hv_dict
1609 self.new_hvparams[hv_name].update(hv_dict)
1611 if self.op.enabled_hypervisors is not None:
1612 self.hv_list = self.op.enabled_hypervisors
1613 if not self.hv_list:
1614 raise errors.OpPrereqError("Enabled hypervisors list must contain at"
1615 " least one member")
1616 invalid_hvs = set(self.hv_list) - constants.HYPER_TYPES
1618 raise errors.OpPrereqError("Enabled hypervisors contains invalid"
1619 " entries: %s" % invalid_hvs)
1621 self.hv_list = cluster.enabled_hypervisors
1623 if self.op.hvparams or self.op.enabled_hypervisors is not None:
1624 # either the enabled list has changed, or the parameters have, validate
1625 for hv_name, hv_params in self.new_hvparams.items():
1626 if ((self.op.hvparams and hv_name in self.op.hvparams) or
1627 (self.op.enabled_hypervisors and
1628 hv_name in self.op.enabled_hypervisors)):
1629 # either this is a new hypervisor, or its parameters have changed
1630 hv_class = hypervisor.GetHypervisor(hv_name)
1631 utils.ForceDictType(hv_params, constants.HVS_PARAMETER_TYPES)
1632 hv_class.CheckParameterSyntax(hv_params)
1633 _CheckHVParams(self, node_list, hv_name, hv_params)
1635 def Exec(self, feedback_fn):
1636 """Change the parameters of the cluster.
1639 if self.op.vg_name is not None:
1640 new_volume = self.op.vg_name
1643 if new_volume != self.cfg.GetVGName():
1644 self.cfg.SetVGName(new_volume)
1646 feedback_fn("Cluster LVM configuration already in desired"
1647 " state, not changing")
1648 if self.op.hvparams:
1649 self.cluster.hvparams = self.new_hvparams
1650 if self.op.enabled_hypervisors is not None:
1651 self.cluster.enabled_hypervisors = self.op.enabled_hypervisors
1652 if self.op.beparams:
1653 self.cluster.beparams[constants.BEGR_DEFAULT] = self.new_beparams
1654 if self.op.candidate_pool_size is not None:
1655 self.cluster.candidate_pool_size = self.op.candidate_pool_size
1656 # we need to update the pool size here, otherwise the save will fail
1657 _AdjustCandidatePool(self)
1659 self.cfg.Update(self.cluster)
1662 class LURedistributeConfig(NoHooksLU):
1663 """Force the redistribution of cluster configuration.
1665 This is a very simple LU.
1671 def ExpandNames(self):
1672 self.needed_locks = {
1673 locking.LEVEL_NODE: locking.ALL_SET,
1675 self.share_locks[locking.LEVEL_NODE] = 1
1677 def CheckPrereq(self):
1678 """Check prerequisites.
1682 def Exec(self, feedback_fn):
1683 """Redistribute the configuration.
1686 self.cfg.Update(self.cfg.GetClusterInfo())
1689 def _WaitForSync(lu, instance, oneshot=False, unlock=False):
1690 """Sleep and poll for an instance's disk to sync.
1693 if not instance.disks:
1697 lu.proc.LogInfo("Waiting for instance %s to sync disks." % instance.name)
1699 node = instance.primary_node
1701 for dev in instance.disks:
1702 lu.cfg.SetDiskID(dev, node)
1705 degr_retries = 10 # in seconds, as we sleep 1 second each time
1709 cumul_degraded = False
1710 rstats = lu.rpc.call_blockdev_getmirrorstatus(node, instance.disks)
1711 if rstats.failed or not rstats.data:
1712 lu.LogWarning("Can't get any data from node %s", node)
1715 raise errors.RemoteError("Can't contact node %s for mirror data,"
1716 " aborting." % node)
1719 rstats = rstats.data
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.RemoteFailMsg()
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 list of OS objects as values, eg::
1831 {"debian-etch": {"node1": [<object>,...],
1832 "node2": [<object>,]}
1837 # we build here the list of nodes that didn't fail the RPC (at RPC
1838 # level), so that nodes with a non-responding node daemon don't
1839 # make all OSes invalid
1840 good_nodes = [node_name for node_name in rlist
1841 if not rlist[node_name].failed]
1842 for node_name, nr in rlist.iteritems():
1843 if nr.failed or not nr.data:
1845 for os_obj in nr.data:
1846 if os_obj.name not in all_os:
1847 # build a list of nodes for this os containing empty lists
1848 # for each node in node_list
1849 all_os[os_obj.name] = {}
1850 for nname in good_nodes:
1851 all_os[os_obj.name][nname] = []
1852 all_os[os_obj.name][node_name].append(os_obj)
1855 def Exec(self, feedback_fn):
1856 """Compute the list of OSes.
1859 valid_nodes = [node for node in self.cfg.GetOnlineNodeList()]
1860 node_data = self.rpc.call_os_diagnose(valid_nodes)
1861 if node_data == False:
1862 raise errors.OpExecError("Can't gather the list of OSes")
1863 pol = self._DiagnoseByOS(valid_nodes, node_data)
1865 for os_name, os_data in pol.iteritems():
1867 for field in self.op.output_fields:
1870 elif field == "valid":
1871 val = utils.all([osl and osl[0] for osl in os_data.values()])
1872 elif field == "node_status":
1874 for node_name, nos_list in os_data.iteritems():
1875 val[node_name] = [(v.status, v.path) for v in 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 signaled 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 self.rpc.call_node_leave_cluster(node.name)
1949 # Promote nodes to master candidate as needed
1950 _AdjustCandidatePool(self)
1953 class LUQueryNodes(NoHooksLU):
1954 """Logical unit for querying nodes.
1957 _OP_REQP = ["output_fields", "names", "use_locking"]
1959 _FIELDS_DYNAMIC = utils.FieldSet(
1961 "mtotal", "mnode", "mfree",
1963 "ctotal", "cnodes", "csockets",
1966 _FIELDS_STATIC = utils.FieldSet(
1967 "name", "pinst_cnt", "sinst_cnt",
1968 "pinst_list", "sinst_list",
1969 "pip", "sip", "tags",
1978 def ExpandNames(self):
1979 _CheckOutputFields(static=self._FIELDS_STATIC,
1980 dynamic=self._FIELDS_DYNAMIC,
1981 selected=self.op.output_fields)
1983 self.needed_locks = {}
1984 self.share_locks[locking.LEVEL_NODE] = 1
1987 self.wanted = _GetWantedNodes(self, self.op.names)
1989 self.wanted = locking.ALL_SET
1991 self.do_node_query = self._FIELDS_STATIC.NonMatching(self.op.output_fields)
1992 self.do_locking = self.do_node_query and self.op.use_locking
1994 # if we don't request only static fields, we need to lock the nodes
1995 self.needed_locks[locking.LEVEL_NODE] = self.wanted
1998 def CheckPrereq(self):
1999 """Check prerequisites.
2002 # The validation of the node list is done in the _GetWantedNodes,
2003 # if non empty, and if empty, there's no validation to do
2006 def Exec(self, feedback_fn):
2007 """Computes the list of nodes and their attributes.
2010 all_info = self.cfg.GetAllNodesInfo()
2012 nodenames = self.acquired_locks[locking.LEVEL_NODE]
2013 elif self.wanted != locking.ALL_SET:
2014 nodenames = self.wanted
2015 missing = set(nodenames).difference(all_info.keys())
2017 raise errors.OpExecError(
2018 "Some nodes were removed before retrieving their data: %s" % missing)
2020 nodenames = all_info.keys()
2022 nodenames = utils.NiceSort(nodenames)
2023 nodelist = [all_info[name] for name in nodenames]
2025 # begin data gathering
2027 if self.do_node_query:
2029 node_data = self.rpc.call_node_info(nodenames, self.cfg.GetVGName(),
2030 self.cfg.GetHypervisorType())
2031 for name in nodenames:
2032 nodeinfo = node_data[name]
2033 if not nodeinfo.failed and nodeinfo.data:
2034 nodeinfo = nodeinfo.data
2035 fn = utils.TryConvert
2037 "mtotal": fn(int, nodeinfo.get('memory_total', None)),
2038 "mnode": fn(int, nodeinfo.get('memory_dom0', None)),
2039 "mfree": fn(int, nodeinfo.get('memory_free', None)),
2040 "dtotal": fn(int, nodeinfo.get('vg_size', None)),
2041 "dfree": fn(int, nodeinfo.get('vg_free', None)),
2042 "ctotal": fn(int, nodeinfo.get('cpu_total', None)),
2043 "bootid": nodeinfo.get('bootid', None),
2044 "cnodes": fn(int, nodeinfo.get('cpu_nodes', None)),
2045 "csockets": fn(int, nodeinfo.get('cpu_sockets', None)),
2048 live_data[name] = {}
2050 live_data = dict.fromkeys(nodenames, {})
2052 node_to_primary = dict([(name, set()) for name in nodenames])
2053 node_to_secondary = dict([(name, set()) for name in nodenames])
2055 inst_fields = frozenset(("pinst_cnt", "pinst_list",
2056 "sinst_cnt", "sinst_list"))
2057 if inst_fields & frozenset(self.op.output_fields):
2058 instancelist = self.cfg.GetInstanceList()
2060 for instance_name in instancelist:
2061 inst = self.cfg.GetInstanceInfo(instance_name)
2062 if inst.primary_node in node_to_primary:
2063 node_to_primary[inst.primary_node].add(inst.name)
2064 for secnode in inst.secondary_nodes:
2065 if secnode in node_to_secondary:
2066 node_to_secondary[secnode].add(inst.name)
2068 master_node = self.cfg.GetMasterNode()
2070 # end data gathering
2073 for node in nodelist:
2075 for field in self.op.output_fields:
2078 elif field == "pinst_list":
2079 val = list(node_to_primary[node.name])
2080 elif field == "sinst_list":
2081 val = list(node_to_secondary[node.name])
2082 elif field == "pinst_cnt":
2083 val = len(node_to_primary[node.name])
2084 elif field == "sinst_cnt":
2085 val = len(node_to_secondary[node.name])
2086 elif field == "pip":
2087 val = node.primary_ip
2088 elif field == "sip":
2089 val = node.secondary_ip
2090 elif field == "tags":
2091 val = list(node.GetTags())
2092 elif field == "serial_no":
2093 val = node.serial_no
2094 elif field == "master_candidate":
2095 val = node.master_candidate
2096 elif field == "master":
2097 val = node.name == master_node
2098 elif field == "offline":
2100 elif field == "drained":
2102 elif self._FIELDS_DYNAMIC.Matches(field):
2103 val = live_data[node.name].get(field, None)
2104 elif field == "role":
2105 if node.name == master_node:
2107 elif node.master_candidate:
2116 raise errors.ParameterError(field)
2117 node_output.append(val)
2118 output.append(node_output)
2123 class LUQueryNodeVolumes(NoHooksLU):
2124 """Logical unit for getting volumes on node(s).
2127 _OP_REQP = ["nodes", "output_fields"]
2129 _FIELDS_DYNAMIC = utils.FieldSet("phys", "vg", "name", "size", "instance")
2130 _FIELDS_STATIC = utils.FieldSet("node")
2132 def ExpandNames(self):
2133 _CheckOutputFields(static=self._FIELDS_STATIC,
2134 dynamic=self._FIELDS_DYNAMIC,
2135 selected=self.op.output_fields)
2137 self.needed_locks = {}
2138 self.share_locks[locking.LEVEL_NODE] = 1
2139 if not self.op.nodes:
2140 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
2142 self.needed_locks[locking.LEVEL_NODE] = \
2143 _GetWantedNodes(self, self.op.nodes)
2145 def CheckPrereq(self):
2146 """Check prerequisites.
2148 This checks that the fields required are valid output fields.
2151 self.nodes = self.acquired_locks[locking.LEVEL_NODE]
2153 def Exec(self, feedback_fn):
2154 """Computes the list of nodes and their attributes.
2157 nodenames = self.nodes
2158 volumes = self.rpc.call_node_volumes(nodenames)
2160 ilist = [self.cfg.GetInstanceInfo(iname) for iname
2161 in self.cfg.GetInstanceList()]
2163 lv_by_node = dict([(inst, inst.MapLVsByNode()) for inst in ilist])
2166 for node in nodenames:
2167 if node not in volumes or volumes[node].failed or not volumes[node].data:
2170 node_vols = volumes[node].data[:]
2171 node_vols.sort(key=lambda vol: vol['dev'])
2173 for vol in node_vols:
2175 for field in self.op.output_fields:
2178 elif field == "phys":
2182 elif field == "name":
2184 elif field == "size":
2185 val = int(float(vol['size']))
2186 elif field == "instance":
2188 if node not in lv_by_node[inst]:
2190 if vol['name'] in lv_by_node[inst][node]:
2196 raise errors.ParameterError(field)
2197 node_output.append(str(val))
2199 output.append(node_output)
2204 class LUAddNode(LogicalUnit):
2205 """Logical unit for adding node to the cluster.
2209 HTYPE = constants.HTYPE_NODE
2210 _OP_REQP = ["node_name"]
2212 def BuildHooksEnv(self):
2215 This will run on all nodes before, and on all nodes + the new node after.
2219 "OP_TARGET": self.op.node_name,
2220 "NODE_NAME": self.op.node_name,
2221 "NODE_PIP": self.op.primary_ip,
2222 "NODE_SIP": self.op.secondary_ip,
2224 nodes_0 = self.cfg.GetNodeList()
2225 nodes_1 = nodes_0 + [self.op.node_name, ]
2226 return env, nodes_0, nodes_1
2228 def CheckPrereq(self):
2229 """Check prerequisites.
2232 - the new node is not already in the config
2234 - its parameters (single/dual homed) matches the cluster
2236 Any errors are signaled by raising errors.OpPrereqError.
2239 node_name = self.op.node_name
2242 dns_data = utils.HostInfo(node_name)
2244 node = dns_data.name
2245 primary_ip = self.op.primary_ip = dns_data.ip
2246 secondary_ip = getattr(self.op, "secondary_ip", None)
2247 if secondary_ip is None:
2248 secondary_ip = primary_ip
2249 if not utils.IsValidIP(secondary_ip):
2250 raise errors.OpPrereqError("Invalid secondary IP given")
2251 self.op.secondary_ip = secondary_ip
2253 node_list = cfg.GetNodeList()
2254 if not self.op.readd and node in node_list:
2255 raise errors.OpPrereqError("Node %s is already in the configuration" %
2257 elif self.op.readd and node not in node_list:
2258 raise errors.OpPrereqError("Node %s is not in the configuration" % node)
2260 for existing_node_name in node_list:
2261 existing_node = cfg.GetNodeInfo(existing_node_name)
2263 if self.op.readd and node == existing_node_name:
2264 if (existing_node.primary_ip != primary_ip or
2265 existing_node.secondary_ip != secondary_ip):
2266 raise errors.OpPrereqError("Readded node doesn't have the same IP"
2267 " address configuration as before")
2270 if (existing_node.primary_ip == primary_ip or
2271 existing_node.secondary_ip == primary_ip or
2272 existing_node.primary_ip == secondary_ip or
2273 existing_node.secondary_ip == secondary_ip):
2274 raise errors.OpPrereqError("New node ip address(es) conflict with"
2275 " existing node %s" % existing_node.name)
2277 # check that the type of the node (single versus dual homed) is the
2278 # same as for the master
2279 myself = cfg.GetNodeInfo(self.cfg.GetMasterNode())
2280 master_singlehomed = myself.secondary_ip == myself.primary_ip
2281 newbie_singlehomed = secondary_ip == primary_ip
2282 if master_singlehomed != newbie_singlehomed:
2283 if master_singlehomed:
2284 raise errors.OpPrereqError("The master has no private ip but the"
2285 " new node has one")
2287 raise errors.OpPrereqError("The master has a private ip but the"
2288 " new node doesn't have one")
2290 # checks reachability
2291 if not utils.TcpPing(primary_ip, constants.DEFAULT_NODED_PORT):
2292 raise errors.OpPrereqError("Node not reachable by ping")
2294 if not newbie_singlehomed:
2295 # check reachability from my secondary ip to newbie's secondary ip
2296 if not utils.TcpPing(secondary_ip, constants.DEFAULT_NODED_PORT,
2297 source=myself.secondary_ip):
2298 raise errors.OpPrereqError("Node secondary ip not reachable by TCP"
2299 " based ping to noded port")
2301 cp_size = self.cfg.GetClusterInfo().candidate_pool_size
2306 mc_now, mc_max = self.cfg.GetMasterCandidateStats(exceptions)
2307 # the new node will increase mc_max with one, so:
2308 mc_max = min(mc_max + 1, cp_size)
2309 self.master_candidate = mc_now < mc_max
2312 self.new_node = self.cfg.GetNodeInfo(node)
2313 assert self.new_node is not None, "Can't retrieve locked node %s" % node
2315 self.new_node = objects.Node(name=node,
2316 primary_ip=primary_ip,
2317 secondary_ip=secondary_ip,
2318 master_candidate=self.master_candidate,
2319 offline=False, drained=False)
2321 def Exec(self, feedback_fn):
2322 """Adds the new node to the cluster.
2325 new_node = self.new_node
2326 node = new_node.name
2328 # for re-adds, reset the offline/drained/master-candidate flags;
2329 # we need to reset here, otherwise offline would prevent RPC calls
2330 # later in the procedure; this also means that if the re-add
2331 # fails, we are left with a non-offlined, broken node
2333 new_node.drained = new_node.offline = False
2334 self.LogInfo("Readding a node, the offline/drained flags were reset")
2335 # if we demote the node, we do cleanup later in the procedure
2336 new_node.master_candidate = self.master_candidate
2338 # notify the user about any possible mc promotion
2339 if new_node.master_candidate:
2340 self.LogInfo("Node will be a master candidate")
2342 # check connectivity
2343 result = self.rpc.call_version([node])[node]
2346 if constants.PROTOCOL_VERSION == result.data:
2347 logging.info("Communication to node %s fine, sw version %s match",
2350 raise errors.OpExecError("Version mismatch master version %s,"
2351 " node version %s" %
2352 (constants.PROTOCOL_VERSION, result.data))
2354 raise errors.OpExecError("Cannot get version from the new node")
2357 logging.info("Copy ssh key to node %s", node)
2358 priv_key, pub_key, _ = ssh.GetUserFiles(constants.GANETI_RUNAS)
2360 keyfiles = [constants.SSH_HOST_DSA_PRIV, constants.SSH_HOST_DSA_PUB,
2361 constants.SSH_HOST_RSA_PRIV, constants.SSH_HOST_RSA_PUB,
2367 keyarray.append(f.read())
2371 result = self.rpc.call_node_add(node, keyarray[0], keyarray[1],
2373 keyarray[3], keyarray[4], keyarray[5])
2375 msg = result.RemoteFailMsg()
2377 raise errors.OpExecError("Cannot transfer ssh keys to the"
2378 " new node: %s" % msg)
2380 # Add node to our /etc/hosts, and add key to known_hosts
2381 utils.AddHostToEtcHosts(new_node.name)
2383 if new_node.secondary_ip != new_node.primary_ip:
2384 result = self.rpc.call_node_has_ip_address(new_node.name,
2385 new_node.secondary_ip)
2386 if result.failed or not result.data:
2387 raise errors.OpExecError("Node claims it doesn't have the secondary ip"
2388 " you gave (%s). Please fix and re-run this"
2389 " command." % new_node.secondary_ip)
2391 node_verify_list = [self.cfg.GetMasterNode()]
2392 node_verify_param = {
2394 # TODO: do a node-net-test as well?
2397 result = self.rpc.call_node_verify(node_verify_list, node_verify_param,
2398 self.cfg.GetClusterName())
2399 for verifier in node_verify_list:
2400 if result[verifier].failed or not result[verifier].data:
2401 raise errors.OpExecError("Cannot communicate with %s's node daemon"
2402 " for remote verification" % verifier)
2403 if result[verifier].data['nodelist']:
2404 for failed in result[verifier].data['nodelist']:
2405 feedback_fn("ssh/hostname verification failed %s -> %s" %
2406 (verifier, result[verifier].data['nodelist'][failed]))
2407 raise errors.OpExecError("ssh/hostname verification failed.")
2409 # Distribute updated /etc/hosts and known_hosts to all nodes,
2410 # including the node just added
2411 myself = self.cfg.GetNodeInfo(self.cfg.GetMasterNode())
2412 dist_nodes = self.cfg.GetNodeList()
2413 if not self.op.readd:
2414 dist_nodes.append(node)
2415 if myself.name in dist_nodes:
2416 dist_nodes.remove(myself.name)
2418 logging.debug("Copying hosts and known_hosts to all nodes")
2419 for fname in (constants.ETC_HOSTS, constants.SSH_KNOWN_HOSTS_FILE):
2420 result = self.rpc.call_upload_file(dist_nodes, fname)
2421 for to_node, to_result in result.iteritems():
2422 if to_result.failed or not to_result.data:
2423 logging.error("Copy of file %s to node %s failed", fname, to_node)
2426 enabled_hypervisors = self.cfg.GetClusterInfo().enabled_hypervisors
2427 if constants.HTS_COPY_VNC_PASSWORD.intersection(enabled_hypervisors):
2428 to_copy.append(constants.VNC_PASSWORD_FILE)
2430 for fname in to_copy:
2431 result = self.rpc.call_upload_file([node], fname)
2432 if result[node].failed or not result[node]:
2433 logging.error("Could not copy file %s to node %s", fname, node)
2436 self.context.ReaddNode(new_node)
2437 # make sure we redistribute the config
2438 self.cfg.Update(new_node)
2439 # and make sure the new node will not have old files around
2440 if not new_node.master_candidate:
2441 result = self.rpc.call_node_demote_from_mc(new_node.name)
2442 msg = result.RemoteFailMsg()
2444 self.LogWarning("Node failed to demote itself from master"
2445 " candidate status: %s" % msg)
2447 self.context.AddNode(new_node)
2450 class LUSetNodeParams(LogicalUnit):
2451 """Modifies the parameters of a node.
2454 HPATH = "node-modify"
2455 HTYPE = constants.HTYPE_NODE
2456 _OP_REQP = ["node_name"]
2459 def CheckArguments(self):
2460 node_name = self.cfg.ExpandNodeName(self.op.node_name)
2461 if node_name is None:
2462 raise errors.OpPrereqError("Invalid node name '%s'" % self.op.node_name)
2463 self.op.node_name = node_name
2464 _CheckBooleanOpField(self.op, 'master_candidate')
2465 _CheckBooleanOpField(self.op, 'offline')
2466 _CheckBooleanOpField(self.op, 'drained')
2467 all_mods = [self.op.offline, self.op.master_candidate, self.op.drained]
2468 if all_mods.count(None) == 3:
2469 raise errors.OpPrereqError("Please pass at least one modification")
2470 if all_mods.count(True) > 1:
2471 raise errors.OpPrereqError("Can't set the node into more than one"
2472 " state at the same time")
2474 def ExpandNames(self):
2475 self.needed_locks = {locking.LEVEL_NODE: self.op.node_name}
2477 def BuildHooksEnv(self):
2480 This runs on the master node.
2484 "OP_TARGET": self.op.node_name,
2485 "MASTER_CANDIDATE": str(self.op.master_candidate),
2486 "OFFLINE": str(self.op.offline),
2487 "DRAINED": str(self.op.drained),
2489 nl = [self.cfg.GetMasterNode(),
2493 def CheckPrereq(self):
2494 """Check prerequisites.
2496 This only checks the instance list against the existing names.
2499 node = self.node = self.cfg.GetNodeInfo(self.op.node_name)
2501 if ((self.op.master_candidate == False or self.op.offline == True or
2502 self.op.drained == True) and node.master_candidate):
2503 # we will demote the node from master_candidate
2504 if self.op.node_name == self.cfg.GetMasterNode():
2505 raise errors.OpPrereqError("The master node has to be a"
2506 " master candidate, online and not drained")
2507 cp_size = self.cfg.GetClusterInfo().candidate_pool_size
2508 num_candidates, _ = self.cfg.GetMasterCandidateStats()
2509 if num_candidates <= cp_size:
2510 msg = ("Not enough master candidates (desired"
2511 " %d, new value will be %d)" % (cp_size, num_candidates-1))
2513 self.LogWarning(msg)
2515 raise errors.OpPrereqError(msg)
2517 if (self.op.master_candidate == True and
2518 ((node.offline and not self.op.offline == False) or
2519 (node.drained and not self.op.drained == False))):
2520 raise errors.OpPrereqError("Node '%s' is offline or drained, can't set"
2521 " to master_candidate" % node.name)
2525 def Exec(self, feedback_fn):
2534 if self.op.offline is not None:
2535 node.offline = self.op.offline
2536 result.append(("offline", str(self.op.offline)))
2537 if self.op.offline == True:
2538 if node.master_candidate:
2539 node.master_candidate = False
2541 result.append(("master_candidate", "auto-demotion due to offline"))
2543 node.drained = False
2544 result.append(("drained", "clear drained status due to offline"))
2546 if self.op.master_candidate is not None:
2547 node.master_candidate = self.op.master_candidate
2549 result.append(("master_candidate", str(self.op.master_candidate)))
2550 if self.op.master_candidate == False:
2551 rrc = self.rpc.call_node_demote_from_mc(node.name)
2552 msg = rrc.RemoteFailMsg()
2554 self.LogWarning("Node failed to demote itself: %s" % msg)
2556 if self.op.drained is not None:
2557 node.drained = self.op.drained
2558 result.append(("drained", str(self.op.drained)))
2559 if self.op.drained == True:
2560 if node.master_candidate:
2561 node.master_candidate = False
2563 result.append(("master_candidate", "auto-demotion due to drain"))
2564 rrc = self.rpc.call_node_demote_from_mc(node.name)
2565 msg = rrc.RemoteFailMsg()
2567 self.LogWarning("Node failed to demote itself: %s" % msg)
2569 node.offline = False
2570 result.append(("offline", "clear offline status due to drain"))
2572 # this will trigger configuration file update, if needed
2573 self.cfg.Update(node)
2574 # this will trigger job queue propagation or cleanup
2576 self.context.ReaddNode(node)
2581 class LUQueryClusterInfo(NoHooksLU):
2582 """Query cluster configuration.
2588 def ExpandNames(self):
2589 self.needed_locks = {}
2591 def CheckPrereq(self):
2592 """No prerequsites needed for this LU.
2597 def Exec(self, feedback_fn):
2598 """Return cluster config.
2601 cluster = self.cfg.GetClusterInfo()
2603 "software_version": constants.RELEASE_VERSION,
2604 "protocol_version": constants.PROTOCOL_VERSION,
2605 "config_version": constants.CONFIG_VERSION,
2606 "os_api_version": constants.OS_API_VERSION,
2607 "export_version": constants.EXPORT_VERSION,
2608 "architecture": (platform.architecture()[0], platform.machine()),
2609 "name": cluster.cluster_name,
2610 "master": cluster.master_node,
2611 "default_hypervisor": cluster.default_hypervisor,
2612 "enabled_hypervisors": cluster.enabled_hypervisors,
2613 "hvparams": dict([(hypervisor_name, cluster.hvparams[hypervisor_name])
2614 for hypervisor_name in cluster.enabled_hypervisors]),
2615 "beparams": cluster.beparams,
2616 "candidate_pool_size": cluster.candidate_pool_size,
2617 "default_bridge": cluster.default_bridge,
2618 "master_netdev": cluster.master_netdev,
2619 "volume_group_name": cluster.volume_group_name,
2620 "file_storage_dir": cluster.file_storage_dir,
2626 class LUQueryConfigValues(NoHooksLU):
2627 """Return configuration values.
2632 _FIELDS_DYNAMIC = utils.FieldSet()
2633 _FIELDS_STATIC = utils.FieldSet("cluster_name", "master_node", "drain_flag")
2635 def ExpandNames(self):
2636 self.needed_locks = {}
2638 _CheckOutputFields(static=self._FIELDS_STATIC,
2639 dynamic=self._FIELDS_DYNAMIC,
2640 selected=self.op.output_fields)
2642 def CheckPrereq(self):
2643 """No prerequisites.
2648 def Exec(self, feedback_fn):
2649 """Dump a representation of the cluster config to the standard output.
2653 for field in self.op.output_fields:
2654 if field == "cluster_name":
2655 entry = self.cfg.GetClusterName()
2656 elif field == "master_node":
2657 entry = self.cfg.GetMasterNode()
2658 elif field == "drain_flag":
2659 entry = os.path.exists(constants.JOB_QUEUE_DRAIN_FILE)
2661 raise errors.ParameterError(field)
2662 values.append(entry)
2666 class LUActivateInstanceDisks(NoHooksLU):
2667 """Bring up an instance's disks.
2670 _OP_REQP = ["instance_name"]
2673 def ExpandNames(self):
2674 self._ExpandAndLockInstance()
2675 self.needed_locks[locking.LEVEL_NODE] = []
2676 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
2678 def DeclareLocks(self, level):
2679 if level == locking.LEVEL_NODE:
2680 self._LockInstancesNodes()
2682 def CheckPrereq(self):
2683 """Check prerequisites.
2685 This checks that the instance is in the cluster.
2688 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2689 assert self.instance is not None, \
2690 "Cannot retrieve locked instance %s" % self.op.instance_name
2691 _CheckNodeOnline(self, self.instance.primary_node)
2692 if not hasattr(self.op, "ignore_size"):
2693 self.op.ignore_size = False
2695 def Exec(self, feedback_fn):
2696 """Activate the disks.
2699 disks_ok, disks_info = \
2700 _AssembleInstanceDisks(self, self.instance,
2701 ignore_size=self.op.ignore_size)
2703 raise errors.OpExecError("Cannot activate block devices")
2708 def _AssembleInstanceDisks(lu, instance, ignore_secondaries=False,
2710 """Prepare the block devices for an instance.
2712 This sets up the block devices on all nodes.
2714 @type lu: L{LogicalUnit}
2715 @param lu: the logical unit on whose behalf we execute
2716 @type instance: L{objects.Instance}
2717 @param instance: the instance for whose disks we assemble
2718 @type ignore_secondaries: boolean
2719 @param ignore_secondaries: if true, errors on secondary nodes
2720 won't result in an error return from the function
2721 @type ignore_size: boolean
2722 @param ignore_size: if true, the current known size of the disk
2723 will not be used during the disk activation, useful for cases
2724 when the size is wrong
2725 @return: False if the operation failed, otherwise a list of
2726 (host, instance_visible_name, node_visible_name)
2727 with the mapping from node devices to instance devices
2732 iname = instance.name
2733 # With the two passes mechanism we try to reduce the window of
2734 # opportunity for the race condition of switching DRBD to primary
2735 # before handshaking occured, but we do not eliminate it
2737 # The proper fix would be to wait (with some limits) until the
2738 # connection has been made and drbd transitions from WFConnection
2739 # into any other network-connected state (Connected, SyncTarget,
2742 # 1st pass, assemble on all nodes in secondary mode
2743 for inst_disk in instance.disks:
2744 for node, node_disk in inst_disk.ComputeNodeTree(instance.primary_node):
2746 node_disk = node_disk.Copy()
2747 node_disk.UnsetSize()
2748 lu.cfg.SetDiskID(node_disk, node)
2749 result = lu.rpc.call_blockdev_assemble(node, node_disk, iname, False)
2750 msg = result.RemoteFailMsg()
2752 lu.proc.LogWarning("Could not prepare block device %s on node %s"
2753 " (is_primary=False, pass=1): %s",
2754 inst_disk.iv_name, node, msg)
2755 if not ignore_secondaries:
2758 # FIXME: race condition on drbd migration to primary
2760 # 2nd pass, do only the primary node
2761 for inst_disk in instance.disks:
2762 for node, node_disk in inst_disk.ComputeNodeTree(instance.primary_node):
2763 if node != instance.primary_node:
2766 node_disk = node_disk.Copy()
2767 node_disk.UnsetSize()
2768 lu.cfg.SetDiskID(node_disk, node)
2769 result = lu.rpc.call_blockdev_assemble(node, node_disk, iname, True)
2770 msg = result.RemoteFailMsg()
2772 lu.proc.LogWarning("Could not prepare block device %s on node %s"
2773 " (is_primary=True, pass=2): %s",
2774 inst_disk.iv_name, node, msg)
2776 device_info.append((instance.primary_node, inst_disk.iv_name,
2779 # leave the disks configured for the primary node
2780 # this is a workaround that would be fixed better by
2781 # improving the logical/physical id handling
2782 for disk in instance.disks:
2783 lu.cfg.SetDiskID(disk, instance.primary_node)
2785 return disks_ok, device_info
2788 def _StartInstanceDisks(lu, instance, force):
2789 """Start the disks of an instance.
2792 disks_ok, _ = _AssembleInstanceDisks(lu, instance,
2793 ignore_secondaries=force)
2795 _ShutdownInstanceDisks(lu, instance)
2796 if force is not None and not force:
2797 lu.proc.LogWarning("", hint="If the message above refers to a"
2799 " you can retry the operation using '--force'.")
2800 raise errors.OpExecError("Disk consistency error")
2803 class LUDeactivateInstanceDisks(NoHooksLU):
2804 """Shutdown an instance's disks.
2807 _OP_REQP = ["instance_name"]
2810 def ExpandNames(self):
2811 self._ExpandAndLockInstance()
2812 self.needed_locks[locking.LEVEL_NODE] = []
2813 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
2815 def DeclareLocks(self, level):
2816 if level == locking.LEVEL_NODE:
2817 self._LockInstancesNodes()
2819 def CheckPrereq(self):
2820 """Check prerequisites.
2822 This checks that the instance is in the cluster.
2825 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2826 assert self.instance is not None, \
2827 "Cannot retrieve locked instance %s" % self.op.instance_name
2829 def Exec(self, feedback_fn):
2830 """Deactivate the disks
2833 instance = self.instance
2834 _SafeShutdownInstanceDisks(self, instance)
2837 def _SafeShutdownInstanceDisks(lu, instance):
2838 """Shutdown block devices of an instance.
2840 This function checks if an instance is running, before calling
2841 _ShutdownInstanceDisks.
2844 ins_l = lu.rpc.call_instance_list([instance.primary_node],
2845 [instance.hypervisor])
2846 ins_l = ins_l[instance.primary_node]
2847 if ins_l.failed or not isinstance(ins_l.data, list):
2848 raise errors.OpExecError("Can't contact node '%s'" %
2849 instance.primary_node)
2851 if instance.name in ins_l.data:
2852 raise errors.OpExecError("Instance is running, can't shutdown"
2855 _ShutdownInstanceDisks(lu, instance)
2858 def _ShutdownInstanceDisks(lu, instance, ignore_primary=False):
2859 """Shutdown block devices of an instance.
2861 This does the shutdown on all nodes of the instance.
2863 If the ignore_primary is false, errors on the primary node are
2868 for disk in instance.disks:
2869 for node, top_disk in disk.ComputeNodeTree(instance.primary_node):
2870 lu.cfg.SetDiskID(top_disk, node)
2871 result = lu.rpc.call_blockdev_shutdown(node, top_disk)
2872 msg = result.RemoteFailMsg()
2874 lu.LogWarning("Could not shutdown block device %s on node %s: %s",
2875 disk.iv_name, node, msg)
2876 if not ignore_primary or node != instance.primary_node:
2881 def _CheckNodeFreeMemory(lu, node, reason, requested, hypervisor_name):
2882 """Checks if a node has enough free memory.
2884 This function check if a given node has the needed amount of free
2885 memory. In case the node has less memory or we cannot get the
2886 information from the node, this function raise an OpPrereqError
2889 @type lu: C{LogicalUnit}
2890 @param lu: a logical unit from which we get configuration data
2892 @param node: the node to check
2893 @type reason: C{str}
2894 @param reason: string to use in the error message
2895 @type requested: C{int}
2896 @param requested: the amount of memory in MiB to check for
2897 @type hypervisor_name: C{str}
2898 @param hypervisor_name: the hypervisor to ask for memory stats
2899 @raise errors.OpPrereqError: if the node doesn't have enough memory, or
2900 we cannot check the node
2903 nodeinfo = lu.rpc.call_node_info([node], lu.cfg.GetVGName(), hypervisor_name)
2904 nodeinfo[node].Raise()
2905 free_mem = nodeinfo[node].data.get('memory_free')
2906 if not isinstance(free_mem, int):
2907 raise errors.OpPrereqError("Can't compute free memory on node %s, result"
2908 " was '%s'" % (node, free_mem))
2909 if requested > free_mem:
2910 raise errors.OpPrereqError("Not enough memory on node %s for %s:"
2911 " needed %s MiB, available %s MiB" %
2912 (node, reason, requested, free_mem))
2915 class LUStartupInstance(LogicalUnit):
2916 """Starts an instance.
2919 HPATH = "instance-start"
2920 HTYPE = constants.HTYPE_INSTANCE
2921 _OP_REQP = ["instance_name", "force"]
2924 def ExpandNames(self):
2925 self._ExpandAndLockInstance()
2927 def BuildHooksEnv(self):
2930 This runs on master, primary and secondary nodes of the instance.
2934 "FORCE": self.op.force,
2936 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
2937 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
2940 def CheckPrereq(self):
2941 """Check prerequisites.
2943 This checks that the instance is in the cluster.
2946 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2947 assert self.instance is not None, \
2948 "Cannot retrieve locked instance %s" % self.op.instance_name
2951 self.beparams = getattr(self.op, "beparams", {})
2953 if not isinstance(self.beparams, dict):
2954 raise errors.OpPrereqError("Invalid beparams passed: %s, expected"
2955 " dict" % (type(self.beparams), ))
2956 # fill the beparams dict
2957 utils.ForceDictType(self.beparams, constants.BES_PARAMETER_TYPES)
2958 self.op.beparams = self.beparams
2961 self.hvparams = getattr(self.op, "hvparams", {})
2963 if not isinstance(self.hvparams, dict):
2964 raise errors.OpPrereqError("Invalid hvparams passed: %s, expected"
2965 " dict" % (type(self.hvparams), ))
2967 # check hypervisor parameter syntax (locally)
2968 cluster = self.cfg.GetClusterInfo()
2969 utils.ForceDictType(self.hvparams, constants.HVS_PARAMETER_TYPES)
2970 filled_hvp = cluster.FillDict(cluster.hvparams[instance.hypervisor],
2972 filled_hvp.update(self.hvparams)
2973 hv_type = hypervisor.GetHypervisor(instance.hypervisor)
2974 hv_type.CheckParameterSyntax(filled_hvp)
2975 _CheckHVParams(self, instance.all_nodes, instance.hypervisor, filled_hvp)
2976 self.op.hvparams = self.hvparams
2978 _CheckNodeOnline(self, instance.primary_node)
2980 bep = self.cfg.GetClusterInfo().FillBE(instance)
2981 # check bridges existence
2982 _CheckInstanceBridgesExist(self, instance)
2984 remote_info = self.rpc.call_instance_info(instance.primary_node,
2986 instance.hypervisor)
2988 if not remote_info.data:
2989 _CheckNodeFreeMemory(self, instance.primary_node,
2990 "starting instance %s" % instance.name,
2991 bep[constants.BE_MEMORY], instance.hypervisor)
2993 def Exec(self, feedback_fn):
2994 """Start the instance.
2997 instance = self.instance
2998 force = self.op.force
3000 self.cfg.MarkInstanceUp(instance.name)
3002 node_current = instance.primary_node
3004 _StartInstanceDisks(self, instance, force)
3006 result = self.rpc.call_instance_start(node_current, instance,
3007 self.hvparams, self.beparams)
3008 msg = result.RemoteFailMsg()
3010 _ShutdownInstanceDisks(self, instance)
3011 raise errors.OpExecError("Could not start instance: %s" % msg)
3014 class LURebootInstance(LogicalUnit):
3015 """Reboot an instance.
3018 HPATH = "instance-reboot"
3019 HTYPE = constants.HTYPE_INSTANCE
3020 _OP_REQP = ["instance_name", "ignore_secondaries", "reboot_type"]
3023 def ExpandNames(self):
3024 if self.op.reboot_type not in [constants.INSTANCE_REBOOT_SOFT,
3025 constants.INSTANCE_REBOOT_HARD,
3026 constants.INSTANCE_REBOOT_FULL]:
3027 raise errors.ParameterError("reboot type not in [%s, %s, %s]" %
3028 (constants.INSTANCE_REBOOT_SOFT,
3029 constants.INSTANCE_REBOOT_HARD,
3030 constants.INSTANCE_REBOOT_FULL))
3031 self._ExpandAndLockInstance()
3033 def BuildHooksEnv(self):
3036 This runs on master, primary and secondary nodes of the instance.
3040 "IGNORE_SECONDARIES": self.op.ignore_secondaries,
3041 "REBOOT_TYPE": self.op.reboot_type,
3043 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
3044 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
3047 def CheckPrereq(self):
3048 """Check prerequisites.
3050 This checks that the instance is in the cluster.
3053 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3054 assert self.instance is not None, \
3055 "Cannot retrieve locked instance %s" % self.op.instance_name
3057 _CheckNodeOnline(self, instance.primary_node)
3059 # check bridges existence
3060 _CheckInstanceBridgesExist(self, instance)
3062 def Exec(self, feedback_fn):
3063 """Reboot the instance.
3066 instance = self.instance
3067 ignore_secondaries = self.op.ignore_secondaries
3068 reboot_type = self.op.reboot_type
3070 node_current = instance.primary_node
3072 if reboot_type in [constants.INSTANCE_REBOOT_SOFT,
3073 constants.INSTANCE_REBOOT_HARD]:
3074 for disk in instance.disks:
3075 self.cfg.SetDiskID(disk, node_current)
3076 result = self.rpc.call_instance_reboot(node_current, instance,
3078 msg = result.RemoteFailMsg()
3080 raise errors.OpExecError("Could not reboot instance: %s" % msg)
3082 result = self.rpc.call_instance_shutdown(node_current, instance)
3083 msg = result.RemoteFailMsg()
3085 raise errors.OpExecError("Could not shutdown instance for"
3086 " full reboot: %s" % msg)
3087 _ShutdownInstanceDisks(self, instance)
3088 _StartInstanceDisks(self, instance, ignore_secondaries)
3089 result = self.rpc.call_instance_start(node_current, instance, None, None)
3090 msg = result.RemoteFailMsg()
3092 _ShutdownInstanceDisks(self, instance)
3093 raise errors.OpExecError("Could not start instance for"
3094 " full reboot: %s" % msg)
3096 self.cfg.MarkInstanceUp(instance.name)
3099 class LUShutdownInstance(LogicalUnit):
3100 """Shutdown an instance.
3103 HPATH = "instance-stop"
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.
3127 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3128 assert self.instance is not None, \
3129 "Cannot retrieve locked instance %s" % self.op.instance_name
3130 _CheckNodeOnline(self, self.instance.primary_node)
3132 def Exec(self, feedback_fn):
3133 """Shutdown the instance.
3136 instance = self.instance
3137 node_current = instance.primary_node
3138 self.cfg.MarkInstanceDown(instance.name)
3139 result = self.rpc.call_instance_shutdown(node_current, instance)
3140 msg = result.RemoteFailMsg()
3142 self.proc.LogWarning("Could not shutdown instance: %s" % msg)
3144 _ShutdownInstanceDisks(self, instance)
3147 class LUReinstallInstance(LogicalUnit):
3148 """Reinstall an instance.
3151 HPATH = "instance-reinstall"
3152 HTYPE = constants.HTYPE_INSTANCE
3153 _OP_REQP = ["instance_name"]
3156 def ExpandNames(self):
3157 self._ExpandAndLockInstance()
3159 def BuildHooksEnv(self):
3162 This runs on master, primary and secondary nodes of the instance.
3165 env = _BuildInstanceHookEnvByObject(self, self.instance)
3166 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
3169 def CheckPrereq(self):
3170 """Check prerequisites.
3172 This checks that the instance is in the cluster and is not running.
3175 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3176 assert instance is not None, \
3177 "Cannot retrieve locked instance %s" % self.op.instance_name
3178 _CheckNodeOnline(self, instance.primary_node)
3180 if instance.disk_template == constants.DT_DISKLESS:
3181 raise errors.OpPrereqError("Instance '%s' has no disks" %
3182 self.op.instance_name)
3183 if instance.admin_up:
3184 raise errors.OpPrereqError("Instance '%s' is marked to be up" %
3185 self.op.instance_name)
3186 remote_info = self.rpc.call_instance_info(instance.primary_node,
3188 instance.hypervisor)
3190 if remote_info.data:
3191 raise errors.OpPrereqError("Instance '%s' is running on the node %s" %
3192 (self.op.instance_name,
3193 instance.primary_node))
3195 self.op.os_type = getattr(self.op, "os_type", None)
3196 if self.op.os_type is not None:
3198 pnode = self.cfg.GetNodeInfo(
3199 self.cfg.ExpandNodeName(instance.primary_node))
3201 raise errors.OpPrereqError("Primary node '%s' is unknown" %
3203 result = self.rpc.call_os_get(pnode.name, self.op.os_type)
3205 if not isinstance(result.data, objects.OS):
3206 raise errors.OpPrereqError("OS '%s' not in supported OS list for"
3207 " primary node" % self.op.os_type)
3209 self.instance = instance
3211 def Exec(self, feedback_fn):
3212 """Reinstall the instance.
3215 inst = self.instance
3217 if self.op.os_type is not None:
3218 feedback_fn("Changing OS to '%s'..." % self.op.os_type)
3219 inst.os = self.op.os_type
3220 self.cfg.Update(inst)
3222 _StartInstanceDisks(self, inst, None)
3224 feedback_fn("Running the instance OS create scripts...")
3225 result = self.rpc.call_instance_os_add(inst.primary_node, inst)
3226 msg = result.RemoteFailMsg()
3228 raise errors.OpExecError("Could not install OS for instance %s"
3230 (inst.name, inst.primary_node, msg))
3232 _ShutdownInstanceDisks(self, inst)
3235 class LURenameInstance(LogicalUnit):
3236 """Rename an instance.
3239 HPATH = "instance-rename"
3240 HTYPE = constants.HTYPE_INSTANCE
3241 _OP_REQP = ["instance_name", "new_name"]
3243 def BuildHooksEnv(self):
3246 This runs on master, primary and secondary nodes of the instance.
3249 env = _BuildInstanceHookEnvByObject(self, self.instance)
3250 env["INSTANCE_NEW_NAME"] = self.op.new_name
3251 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
3254 def CheckPrereq(self):
3255 """Check prerequisites.
3257 This checks that the instance is in the cluster and is not running.
3260 instance = self.cfg.GetInstanceInfo(
3261 self.cfg.ExpandInstanceName(self.op.instance_name))
3262 if instance is None:
3263 raise errors.OpPrereqError("Instance '%s' not known" %
3264 self.op.instance_name)
3265 _CheckNodeOnline(self, instance.primary_node)
3267 if instance.admin_up:
3268 raise errors.OpPrereqError("Instance '%s' is marked to be up" %
3269 self.op.instance_name)
3270 remote_info = self.rpc.call_instance_info(instance.primary_node,
3272 instance.hypervisor)
3274 if remote_info.data:
3275 raise errors.OpPrereqError("Instance '%s' is running on the node %s" %
3276 (self.op.instance_name,
3277 instance.primary_node))
3278 self.instance = instance
3280 # new name verification
3281 name_info = utils.HostInfo(self.op.new_name)
3283 self.op.new_name = new_name = name_info.name
3284 instance_list = self.cfg.GetInstanceList()
3285 if new_name in instance_list:
3286 raise errors.OpPrereqError("Instance '%s' is already in the cluster" %
3289 if not getattr(self.op, "ignore_ip", False):
3290 if utils.TcpPing(name_info.ip, constants.DEFAULT_NODED_PORT):
3291 raise errors.OpPrereqError("IP %s of instance %s already in use" %
3292 (name_info.ip, new_name))
3295 def Exec(self, feedback_fn):
3296 """Reinstall the instance.
3299 inst = self.instance
3300 old_name = inst.name
3302 if inst.disk_template == constants.DT_FILE:
3303 old_file_storage_dir = os.path.dirname(inst.disks[0].logical_id[1])
3305 self.cfg.RenameInstance(inst.name, self.op.new_name)
3306 # Change the instance lock. This is definitely safe while we hold the BGL
3307 self.context.glm.remove(locking.LEVEL_INSTANCE, old_name)
3308 self.context.glm.add(locking.LEVEL_INSTANCE, self.op.new_name)
3310 # re-read the instance from the configuration after rename
3311 inst = self.cfg.GetInstanceInfo(self.op.new_name)
3313 if inst.disk_template == constants.DT_FILE:
3314 new_file_storage_dir = os.path.dirname(inst.disks[0].logical_id[1])
3315 result = self.rpc.call_file_storage_dir_rename(inst.primary_node,
3316 old_file_storage_dir,
3317 new_file_storage_dir)
3320 raise errors.OpExecError("Could not connect to node '%s' to rename"
3321 " directory '%s' to '%s' (but the instance"
3322 " has been renamed in Ganeti)" % (
3323 inst.primary_node, old_file_storage_dir,
3324 new_file_storage_dir))
3326 if not result.data[0]:
3327 raise errors.OpExecError("Could not rename directory '%s' to '%s'"
3328 " (but the instance has been renamed in"
3329 " Ganeti)" % (old_file_storage_dir,
3330 new_file_storage_dir))
3332 _StartInstanceDisks(self, inst, None)
3334 result = self.rpc.call_instance_run_rename(inst.primary_node, inst,
3336 msg = result.RemoteFailMsg()
3338 msg = ("Could not run OS rename script for instance %s on node %s"
3339 " (but the instance has been renamed in Ganeti): %s" %
3340 (inst.name, inst.primary_node, msg))
3341 self.proc.LogWarning(msg)
3343 _ShutdownInstanceDisks(self, inst)
3346 class LURemoveInstance(LogicalUnit):
3347 """Remove an instance.
3350 HPATH = "instance-remove"
3351 HTYPE = constants.HTYPE_INSTANCE
3352 _OP_REQP = ["instance_name", "ignore_failures"]
3355 def ExpandNames(self):
3356 self._ExpandAndLockInstance()
3357 self.needed_locks[locking.LEVEL_NODE] = []
3358 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3360 def DeclareLocks(self, level):
3361 if level == locking.LEVEL_NODE:
3362 self._LockInstancesNodes()
3364 def BuildHooksEnv(self):
3367 This runs on master, primary and secondary nodes of the instance.
3370 env = _BuildInstanceHookEnvByObject(self, self.instance)
3371 nl = [self.cfg.GetMasterNode()]
3374 def CheckPrereq(self):
3375 """Check prerequisites.
3377 This checks that the instance is in the cluster.
3380 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3381 assert self.instance is not None, \
3382 "Cannot retrieve locked instance %s" % self.op.instance_name
3384 def Exec(self, feedback_fn):
3385 """Remove the instance.
3388 instance = self.instance
3389 logging.info("Shutting down instance %s on node %s",
3390 instance.name, instance.primary_node)
3392 result = self.rpc.call_instance_shutdown(instance.primary_node, instance)
3393 msg = result.RemoteFailMsg()
3395 if self.op.ignore_failures:
3396 feedback_fn("Warning: can't shutdown instance: %s" % msg)
3398 raise errors.OpExecError("Could not shutdown instance %s on"
3400 (instance.name, instance.primary_node, msg))
3402 logging.info("Removing block devices for instance %s", instance.name)
3404 if not _RemoveDisks(self, instance):
3405 if self.op.ignore_failures:
3406 feedback_fn("Warning: can't remove instance's disks")
3408 raise errors.OpExecError("Can't remove instance's disks")
3410 logging.info("Removing instance %s out of cluster config", instance.name)
3412 self.cfg.RemoveInstance(instance.name)
3413 self.remove_locks[locking.LEVEL_INSTANCE] = instance.name
3416 class LUQueryInstances(NoHooksLU):
3417 """Logical unit for querying instances.
3420 _OP_REQP = ["output_fields", "names", "use_locking"]
3422 _FIELDS_STATIC = utils.FieldSet(*["name", "os", "pnode", "snodes",
3424 "disk_template", "ip", "mac", "bridge",
3425 "sda_size", "sdb_size", "vcpus", "tags",
3426 "network_port", "beparams",
3427 r"(disk)\.(size)/([0-9]+)",
3428 r"(disk)\.(sizes)", "disk_usage",
3429 r"(nic)\.(mac|ip|bridge)/([0-9]+)",
3430 r"(nic)\.(macs|ips|bridges)",
3431 r"(disk|nic)\.(count)",
3432 "serial_no", "hypervisor", "hvparams",] +
3434 for name in constants.HVS_PARAMETERS] +
3436 for name in constants.BES_PARAMETERS])
3437 _FIELDS_DYNAMIC = utils.FieldSet("oper_state", "oper_ram", "status")
3440 def ExpandNames(self):
3441 _CheckOutputFields(static=self._FIELDS_STATIC,
3442 dynamic=self._FIELDS_DYNAMIC,
3443 selected=self.op.output_fields)
3445 self.needed_locks = {}
3446 self.share_locks[locking.LEVEL_INSTANCE] = 1
3447 self.share_locks[locking.LEVEL_NODE] = 1
3450 self.wanted = _GetWantedInstances(self, self.op.names)
3452 self.wanted = locking.ALL_SET
3454 self.do_node_query = self._FIELDS_STATIC.NonMatching(self.op.output_fields)
3455 self.do_locking = self.do_node_query and self.op.use_locking
3457 self.needed_locks[locking.LEVEL_INSTANCE] = self.wanted
3458 self.needed_locks[locking.LEVEL_NODE] = []
3459 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3461 def DeclareLocks(self, level):
3462 if level == locking.LEVEL_NODE and self.do_locking:
3463 self._LockInstancesNodes()
3465 def CheckPrereq(self):
3466 """Check prerequisites.
3471 def Exec(self, feedback_fn):
3472 """Computes the list of nodes and their attributes.
3475 all_info = self.cfg.GetAllInstancesInfo()
3476 if self.wanted == locking.ALL_SET:
3477 # caller didn't specify instance names, so ordering is not important
3479 instance_names = self.acquired_locks[locking.LEVEL_INSTANCE]
3481 instance_names = all_info.keys()
3482 instance_names = utils.NiceSort(instance_names)
3484 # caller did specify names, so we must keep the ordering
3486 tgt_set = self.acquired_locks[locking.LEVEL_INSTANCE]
3488 tgt_set = all_info.keys()
3489 missing = set(self.wanted).difference(tgt_set)
3491 raise errors.OpExecError("Some instances were removed before"
3492 " retrieving their data: %s" % missing)
3493 instance_names = self.wanted
3495 instance_list = [all_info[iname] for iname in instance_names]
3497 # begin data gathering
3499 nodes = frozenset([inst.primary_node for inst in instance_list])
3500 hv_list = list(set([inst.hypervisor for inst in instance_list]))
3504 if self.do_node_query:
3506 node_data = self.rpc.call_all_instances_info(nodes, hv_list)
3508 result = node_data[name]
3510 # offline nodes will be in both lists
3511 off_nodes.append(name)
3513 bad_nodes.append(name)
3516 live_data.update(result.data)
3517 # else no instance is alive
3519 live_data = dict([(name, {}) for name in instance_names])
3521 # end data gathering
3526 for instance in instance_list:
3528 i_hv = self.cfg.GetClusterInfo().FillHV(instance)
3529 i_be = self.cfg.GetClusterInfo().FillBE(instance)
3530 for field in self.op.output_fields:
3531 st_match = self._FIELDS_STATIC.Matches(field)
3536 elif field == "pnode":
3537 val = instance.primary_node
3538 elif field == "snodes":
3539 val = list(instance.secondary_nodes)
3540 elif field == "admin_state":
3541 val = instance.admin_up
3542 elif field == "oper_state":
3543 if instance.primary_node in bad_nodes:
3546 val = bool(live_data.get(instance.name))
3547 elif field == "status":
3548 if instance.primary_node in off_nodes:
3549 val = "ERROR_nodeoffline"
3550 elif instance.primary_node in bad_nodes:
3551 val = "ERROR_nodedown"
3553 running = bool(live_data.get(instance.name))
3555 if instance.admin_up:
3560 if instance.admin_up:
3564 elif field == "oper_ram":
3565 if instance.primary_node in bad_nodes:
3567 elif instance.name in live_data:
3568 val = live_data[instance.name].get("memory", "?")
3571 elif field == "vcpus":
3572 val = i_be[constants.BE_VCPUS]
3573 elif field == "disk_template":
3574 val = instance.disk_template
3577 val = instance.nics[0].ip
3580 elif field == "bridge":
3582 val = instance.nics[0].bridge
3585 elif field == "mac":
3587 val = instance.nics[0].mac
3590 elif field == "sda_size" or field == "sdb_size":
3591 idx = ord(field[2]) - ord('a')
3593 val = instance.FindDisk(idx).size
3594 except errors.OpPrereqError:
3596 elif field == "disk_usage": # total disk usage per node
3597 disk_sizes = [{'size': disk.size} for disk in instance.disks]
3598 val = _ComputeDiskSize(instance.disk_template, disk_sizes)
3599 elif field == "tags":
3600 val = list(instance.GetTags())
3601 elif field == "serial_no":
3602 val = instance.serial_no
3603 elif field == "network_port":
3604 val = instance.network_port
3605 elif field == "hypervisor":
3606 val = instance.hypervisor
3607 elif field == "hvparams":
3609 elif (field.startswith(HVPREFIX) and
3610 field[len(HVPREFIX):] in constants.HVS_PARAMETERS):
3611 val = i_hv.get(field[len(HVPREFIX):], None)
3612 elif field == "beparams":
3614 elif (field.startswith(BEPREFIX) and
3615 field[len(BEPREFIX):] in constants.BES_PARAMETERS):
3616 val = i_be.get(field[len(BEPREFIX):], None)
3617 elif st_match and st_match.groups():
3618 # matches a variable list
3619 st_groups = st_match.groups()
3620 if st_groups and st_groups[0] == "disk":
3621 if st_groups[1] == "count":
3622 val = len(instance.disks)
3623 elif st_groups[1] == "sizes":
3624 val = [disk.size for disk in instance.disks]
3625 elif st_groups[1] == "size":
3627 val = instance.FindDisk(st_groups[2]).size
3628 except errors.OpPrereqError:
3631 assert False, "Unhandled disk parameter"
3632 elif st_groups[0] == "nic":
3633 if st_groups[1] == "count":
3634 val = len(instance.nics)
3635 elif st_groups[1] == "macs":
3636 val = [nic.mac for nic in instance.nics]
3637 elif st_groups[1] == "ips":
3638 val = [nic.ip for nic in instance.nics]
3639 elif st_groups[1] == "bridges":
3640 val = [nic.bridge for nic in instance.nics]
3643 nic_idx = int(st_groups[2])
3644 if nic_idx >= len(instance.nics):
3647 if st_groups[1] == "mac":
3648 val = instance.nics[nic_idx].mac
3649 elif st_groups[1] == "ip":
3650 val = instance.nics[nic_idx].ip
3651 elif st_groups[1] == "bridge":
3652 val = instance.nics[nic_idx].bridge
3654 assert False, "Unhandled NIC parameter"
3656 assert False, ("Declared but unhandled variable parameter '%s'" %
3659 assert False, "Declared but unhandled parameter '%s'" % field
3666 class LUFailoverInstance(LogicalUnit):
3667 """Failover an instance.
3670 HPATH = "instance-failover"
3671 HTYPE = constants.HTYPE_INSTANCE
3672 _OP_REQP = ["instance_name", "ignore_consistency"]
3675 def ExpandNames(self):
3676 self._ExpandAndLockInstance()
3677 self.needed_locks[locking.LEVEL_NODE] = []
3678 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3680 def DeclareLocks(self, level):
3681 if level == locking.LEVEL_NODE:
3682 self._LockInstancesNodes()
3684 def BuildHooksEnv(self):
3687 This runs on master, primary and secondary nodes of the instance.
3691 "IGNORE_CONSISTENCY": self.op.ignore_consistency,
3693 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
3694 nl = [self.cfg.GetMasterNode()] + list(self.instance.secondary_nodes)
3697 def CheckPrereq(self):
3698 """Check prerequisites.
3700 This checks that the instance is in the cluster.
3703 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3704 assert self.instance is not None, \
3705 "Cannot retrieve locked instance %s" % self.op.instance_name
3707 bep = self.cfg.GetClusterInfo().FillBE(instance)
3708 if instance.disk_template not in constants.DTS_NET_MIRROR:
3709 raise errors.OpPrereqError("Instance's disk layout is not"
3710 " network mirrored, cannot failover.")
3712 secondary_nodes = instance.secondary_nodes
3713 if not secondary_nodes:
3714 raise errors.ProgrammerError("no secondary node but using "
3715 "a mirrored disk template")
3717 target_node = secondary_nodes[0]
3718 _CheckNodeOnline(self, target_node)
3719 _CheckNodeNotDrained(self, target_node)
3721 if instance.admin_up:
3722 # check memory requirements on the secondary node
3723 _CheckNodeFreeMemory(self, target_node, "failing over instance %s" %
3724 instance.name, bep[constants.BE_MEMORY],
3725 instance.hypervisor)
3727 self.LogInfo("Not checking memory on the secondary node as"
3728 " instance will not be started")
3730 # check bridge existence
3731 brlist = [nic.bridge for nic in instance.nics]
3732 result = self.rpc.call_bridges_exist(target_node, brlist)
3735 raise errors.OpPrereqError("One or more target bridges %s does not"
3736 " exist on destination node '%s'" %
3737 (brlist, target_node))
3739 def Exec(self, feedback_fn):
3740 """Failover an instance.
3742 The failover is done by shutting it down on its present node and
3743 starting it on the secondary.
3746 instance = self.instance
3748 source_node = instance.primary_node
3749 target_node = instance.secondary_nodes[0]
3751 feedback_fn("* checking disk consistency between source and target")
3752 for dev in instance.disks:
3753 # for drbd, these are drbd over lvm
3754 if not _CheckDiskConsistency(self, dev, target_node, False):
3755 if instance.admin_up and not self.op.ignore_consistency:
3756 raise errors.OpExecError("Disk %s is degraded on target node,"
3757 " aborting failover." % dev.iv_name)
3759 feedback_fn("* shutting down instance on source node")
3760 logging.info("Shutting down instance %s on node %s",
3761 instance.name, source_node)
3763 result = self.rpc.call_instance_shutdown(source_node, instance)
3764 msg = result.RemoteFailMsg()
3766 if self.op.ignore_consistency:
3767 self.proc.LogWarning("Could not shutdown instance %s on node %s."
3768 " Proceeding anyway. Please make sure node"
3769 " %s is down. Error details: %s",
3770 instance.name, source_node, source_node, msg)
3772 raise errors.OpExecError("Could not shutdown instance %s on"
3774 (instance.name, source_node, msg))
3776 feedback_fn("* deactivating the instance's disks on source node")
3777 if not _ShutdownInstanceDisks(self, instance, ignore_primary=True):
3778 raise errors.OpExecError("Can't shut down the instance's disks.")
3780 instance.primary_node = target_node
3781 # distribute new instance config to the other nodes
3782 self.cfg.Update(instance)
3784 # Only start the instance if it's marked as up
3785 if instance.admin_up:
3786 feedback_fn("* activating the instance's disks on target node")
3787 logging.info("Starting instance %s on node %s",
3788 instance.name, target_node)
3790 disks_ok, _ = _AssembleInstanceDisks(self, instance,
3791 ignore_secondaries=True)
3793 _ShutdownInstanceDisks(self, instance)
3794 raise errors.OpExecError("Can't activate the instance's disks")
3796 feedback_fn("* starting the instance on the target node")
3797 result = self.rpc.call_instance_start(target_node, instance, None, None)
3798 msg = result.RemoteFailMsg()
3800 _ShutdownInstanceDisks(self, instance)
3801 raise errors.OpExecError("Could not start instance %s on node %s: %s" %
3802 (instance.name, target_node, msg))
3805 class LUMigrateInstance(LogicalUnit):
3806 """Migrate an instance.
3808 This is migration without shutting down, compared to the failover,
3809 which is done with shutdown.
3812 HPATH = "instance-migrate"
3813 HTYPE = constants.HTYPE_INSTANCE
3814 _OP_REQP = ["instance_name", "live", "cleanup"]
3818 def ExpandNames(self):
3819 self._ExpandAndLockInstance()
3820 self.needed_locks[locking.LEVEL_NODE] = []
3821 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3823 def DeclareLocks(self, level):
3824 if level == locking.LEVEL_NODE:
3825 self._LockInstancesNodes()
3827 def BuildHooksEnv(self):
3830 This runs on master, primary and secondary nodes of the instance.
3833 env = _BuildInstanceHookEnvByObject(self, self.instance)
3834 env["MIGRATE_LIVE"] = self.op.live
3835 env["MIGRATE_CLEANUP"] = self.op.cleanup
3836 nl = [self.cfg.GetMasterNode()] + list(self.instance.secondary_nodes)
3839 def CheckPrereq(self):
3840 """Check prerequisites.
3842 This checks that the instance is in the cluster.
3845 instance = self.cfg.GetInstanceInfo(
3846 self.cfg.ExpandInstanceName(self.op.instance_name))
3847 if instance is None:
3848 raise errors.OpPrereqError("Instance '%s' not known" %
3849 self.op.instance_name)
3851 if instance.disk_template != constants.DT_DRBD8:
3852 raise errors.OpPrereqError("Instance's disk layout is not"
3853 " drbd8, cannot migrate.")
3855 secondary_nodes = instance.secondary_nodes
3856 if not secondary_nodes:
3857 raise errors.ConfigurationError("No secondary node but using"
3858 " drbd8 disk template")
3860 i_be = self.cfg.GetClusterInfo().FillBE(instance)
3862 target_node = secondary_nodes[0]
3863 # check memory requirements on the secondary node
3864 _CheckNodeFreeMemory(self, target_node, "migrating instance %s" %
3865 instance.name, i_be[constants.BE_MEMORY],
3866 instance.hypervisor)
3868 # check bridge existence
3869 brlist = [nic.bridge for nic in instance.nics]
3870 result = self.rpc.call_bridges_exist(target_node, brlist)
3871 if result.failed or not result.data:
3872 raise errors.OpPrereqError("One or more target bridges %s does not"
3873 " exist on destination node '%s'" %
3874 (brlist, target_node))
3876 if not self.op.cleanup:
3877 _CheckNodeNotDrained(self, target_node)
3878 result = self.rpc.call_instance_migratable(instance.primary_node,
3880 msg = result.RemoteFailMsg()
3882 raise errors.OpPrereqError("Can't migrate: %s - please use failover" %
3885 self.instance = instance
3887 def _WaitUntilSync(self):
3888 """Poll with custom rpc for disk sync.
3890 This uses our own step-based rpc call.
3893 self.feedback_fn("* wait until resync is done")
3897 result = self.rpc.call_drbd_wait_sync(self.all_nodes,
3899 self.instance.disks)
3901 for node, nres in result.items():
3902 msg = nres.RemoteFailMsg()
3904 raise errors.OpExecError("Cannot resync disks on node %s: %s" %
3906 node_done, node_percent = nres.payload
3907 all_done = all_done and node_done
3908 if node_percent is not None:
3909 min_percent = min(min_percent, node_percent)
3911 if min_percent < 100:
3912 self.feedback_fn(" - progress: %.1f%%" % min_percent)
3915 def _EnsureSecondary(self, node):
3916 """Demote a node to secondary.
3919 self.feedback_fn("* switching node %s to secondary mode" % node)
3921 for dev in self.instance.disks:
3922 self.cfg.SetDiskID(dev, node)
3924 result = self.rpc.call_blockdev_close(node, self.instance.name,
3925 self.instance.disks)
3926 msg = result.RemoteFailMsg()
3928 raise errors.OpExecError("Cannot change disk to secondary on node %s,"
3929 " error %s" % (node, msg))
3931 def _GoStandalone(self):
3932 """Disconnect from the network.
3935 self.feedback_fn("* changing into standalone mode")
3936 result = self.rpc.call_drbd_disconnect_net(self.all_nodes, self.nodes_ip,
3937 self.instance.disks)
3938 for node, nres in result.items():
3939 msg = nres.RemoteFailMsg()
3941 raise errors.OpExecError("Cannot disconnect disks node %s,"
3942 " error %s" % (node, msg))
3944 def _GoReconnect(self, multimaster):
3945 """Reconnect to the network.
3951 msg = "single-master"
3952 self.feedback_fn("* changing disks into %s mode" % msg)
3953 result = self.rpc.call_drbd_attach_net(self.all_nodes, self.nodes_ip,
3954 self.instance.disks,
3955 self.instance.name, multimaster)
3956 for node, nres in result.items():
3957 msg = nres.RemoteFailMsg()
3959 raise errors.OpExecError("Cannot change disks config on node %s,"
3960 " error: %s" % (node, msg))
3962 def _ExecCleanup(self):
3963 """Try to cleanup after a failed migration.
3965 The cleanup is done by:
3966 - check that the instance is running only on one node
3967 (and update the config if needed)
3968 - change disks on its secondary node to secondary
3969 - wait until disks are fully synchronized
3970 - disconnect from the network
3971 - change disks into single-master mode
3972 - wait again until disks are fully synchronized
3975 instance = self.instance
3976 target_node = self.target_node
3977 source_node = self.source_node
3979 # check running on only one node
3980 self.feedback_fn("* checking where the instance actually runs"
3981 " (if this hangs, the hypervisor might be in"
3983 ins_l = self.rpc.call_instance_list(self.all_nodes, [instance.hypervisor])
3984 for node, result in ins_l.items():
3986 if not isinstance(result.data, list):
3987 raise errors.OpExecError("Can't contact node '%s'" % node)
3989 runningon_source = instance.name in ins_l[source_node].data
3990 runningon_target = instance.name in ins_l[target_node].data
3992 if runningon_source and runningon_target:
3993 raise errors.OpExecError("Instance seems to be running on two nodes,"
3994 " or the hypervisor is confused. You will have"
3995 " to ensure manually that it runs only on one"
3996 " and restart this operation.")
3998 if not (runningon_source or runningon_target):
3999 raise errors.OpExecError("Instance does not seem to be running at all."
4000 " In this case, it's safer to repair by"
4001 " running 'gnt-instance stop' to ensure disk"
4002 " shutdown, and then restarting it.")
4004 if runningon_target:
4005 # the migration has actually succeeded, we need to update the config
4006 self.feedback_fn("* instance running on secondary node (%s),"
4007 " updating config" % target_node)
4008 instance.primary_node = target_node
4009 self.cfg.Update(instance)
4010 demoted_node = source_node
4012 self.feedback_fn("* instance confirmed to be running on its"
4013 " primary node (%s)" % source_node)
4014 demoted_node = target_node
4016 self._EnsureSecondary(demoted_node)
4018 self._WaitUntilSync()
4019 except errors.OpExecError:
4020 # we ignore here errors, since if the device is standalone, it
4021 # won't be able to sync
4023 self._GoStandalone()
4024 self._GoReconnect(False)
4025 self._WaitUntilSync()
4027 self.feedback_fn("* done")
4029 def _RevertDiskStatus(self):
4030 """Try to revert the disk status after a failed migration.
4033 target_node = self.target_node
4035 self._EnsureSecondary(target_node)
4036 self._GoStandalone()
4037 self._GoReconnect(False)
4038 self._WaitUntilSync()
4039 except errors.OpExecError, err:
4040 self.LogWarning("Migration failed and I can't reconnect the"
4041 " drives: error '%s'\n"
4042 "Please look and recover the instance status" %
4045 def _AbortMigration(self):
4046 """Call the hypervisor code to abort a started migration.
4049 instance = self.instance
4050 target_node = self.target_node
4051 migration_info = self.migration_info
4053 abort_result = self.rpc.call_finalize_migration(target_node,
4057 abort_msg = abort_result.RemoteFailMsg()
4059 logging.error("Aborting migration failed on target node %s: %s" %
4060 (target_node, abort_msg))
4061 # Don't raise an exception here, as we stil have to try to revert the
4062 # disk status, even if this step failed.
4064 def _ExecMigration(self):
4065 """Migrate an instance.
4067 The migrate is done by:
4068 - change the disks into dual-master mode
4069 - wait until disks are fully synchronized again
4070 - migrate the instance
4071 - change disks on the new secondary node (the old primary) to secondary
4072 - wait until disks are fully synchronized
4073 - change disks into single-master mode
4076 instance = self.instance
4077 target_node = self.target_node
4078 source_node = self.source_node
4080 self.feedback_fn("* checking disk consistency between source and target")
4081 for dev in instance.disks:
4082 if not _CheckDiskConsistency(self, dev, target_node, False):
4083 raise errors.OpExecError("Disk %s is degraded or not fully"
4084 " synchronized on target node,"
4085 " aborting migrate." % dev.iv_name)
4087 # First get the migration information from the remote node
4088 result = self.rpc.call_migration_info(source_node, instance)
4089 msg = result.RemoteFailMsg()
4091 log_err = ("Failed fetching source migration information from %s: %s" %
4093 logging.error(log_err)
4094 raise errors.OpExecError(log_err)
4096 self.migration_info = migration_info = result.payload
4098 # Then switch the disks to master/master mode
4099 self._EnsureSecondary(target_node)
4100 self._GoStandalone()
4101 self._GoReconnect(True)
4102 self._WaitUntilSync()
4104 self.feedback_fn("* preparing %s to accept the instance" % target_node)
4105 result = self.rpc.call_accept_instance(target_node,
4108 self.nodes_ip[target_node])
4110 msg = result.RemoteFailMsg()
4112 logging.error("Instance pre-migration failed, trying to revert"
4113 " disk status: %s", msg)
4114 self._AbortMigration()
4115 self._RevertDiskStatus()
4116 raise errors.OpExecError("Could not pre-migrate instance %s: %s" %
4117 (instance.name, msg))
4119 self.feedback_fn("* migrating instance to %s" % target_node)
4121 result = self.rpc.call_instance_migrate(source_node, instance,
4122 self.nodes_ip[target_node],
4124 msg = result.RemoteFailMsg()
4126 logging.error("Instance migration failed, trying to revert"
4127 " disk status: %s", msg)
4128 self._AbortMigration()
4129 self._RevertDiskStatus()
4130 raise errors.OpExecError("Could not migrate instance %s: %s" %
4131 (instance.name, msg))
4134 instance.primary_node = target_node
4135 # distribute new instance config to the other nodes
4136 self.cfg.Update(instance)
4138 result = self.rpc.call_finalize_migration(target_node,
4142 msg = result.RemoteFailMsg()
4144 logging.error("Instance migration succeeded, but finalization failed:"
4146 raise errors.OpExecError("Could not finalize instance migration: %s" %
4149 self._EnsureSecondary(source_node)
4150 self._WaitUntilSync()
4151 self._GoStandalone()
4152 self._GoReconnect(False)
4153 self._WaitUntilSync()
4155 self.feedback_fn("* done")
4157 def Exec(self, feedback_fn):
4158 """Perform the migration.
4161 self.feedback_fn = feedback_fn
4163 self.source_node = self.instance.primary_node
4164 self.target_node = self.instance.secondary_nodes[0]
4165 self.all_nodes = [self.source_node, self.target_node]
4167 self.source_node: self.cfg.GetNodeInfo(self.source_node).secondary_ip,
4168 self.target_node: self.cfg.GetNodeInfo(self.target_node).secondary_ip,
4171 return self._ExecCleanup()
4173 return self._ExecMigration()
4176 def _CreateBlockDev(lu, node, instance, device, force_create,
4178 """Create a tree of block devices on a given node.
4180 If this device type has to be created on secondaries, create it and
4183 If not, just recurse to children keeping the same 'force' value.
4185 @param lu: the lu on whose behalf we execute
4186 @param node: the node on which to create the device
4187 @type instance: L{objects.Instance}
4188 @param instance: the instance which owns the device
4189 @type device: L{objects.Disk}
4190 @param device: the device to create
4191 @type force_create: boolean
4192 @param force_create: whether to force creation of this device; this
4193 will be change to True whenever we find a device which has
4194 CreateOnSecondary() attribute
4195 @param info: the extra 'metadata' we should attach to the device
4196 (this will be represented as a LVM tag)
4197 @type force_open: boolean
4198 @param force_open: this parameter will be passes to the
4199 L{backend.BlockdevCreate} function where it specifies
4200 whether we run on primary or not, and it affects both
4201 the child assembly and the device own Open() execution
4204 if device.CreateOnSecondary():
4208 for child in device.children:
4209 _CreateBlockDev(lu, node, instance, child, force_create,
4212 if not force_create:
4215 _CreateSingleBlockDev(lu, node, instance, device, info, force_open)
4218 def _CreateSingleBlockDev(lu, node, instance, device, info, force_open):
4219 """Create a single block device on a given node.
4221 This will not recurse over children of the device, so they must be
4224 @param lu: the lu on whose behalf we execute
4225 @param node: the node on which to create the device
4226 @type instance: L{objects.Instance}
4227 @param instance: the instance which owns the device
4228 @type device: L{objects.Disk}
4229 @param device: the device to create
4230 @param info: the extra 'metadata' we should attach to the device
4231 (this will be represented as a LVM tag)
4232 @type force_open: boolean
4233 @param force_open: this parameter will be passes to the
4234 L{backend.BlockdevCreate} function where it specifies
4235 whether we run on primary or not, and it affects both
4236 the child assembly and the device own Open() execution
4239 lu.cfg.SetDiskID(device, node)
4240 result = lu.rpc.call_blockdev_create(node, device, device.size,
4241 instance.name, force_open, info)
4242 msg = result.RemoteFailMsg()
4244 raise errors.OpExecError("Can't create block device %s on"
4245 " node %s for instance %s: %s" %
4246 (device, node, instance.name, msg))
4247 if device.physical_id is None:
4248 device.physical_id = result.payload
4251 def _GenerateUniqueNames(lu, exts):
4252 """Generate a suitable LV name.
4254 This will generate a logical volume name for the given instance.
4259 new_id = lu.cfg.GenerateUniqueID()
4260 results.append("%s%s" % (new_id, val))
4264 def _GenerateDRBD8Branch(lu, primary, secondary, size, names, iv_name,
4266 """Generate a drbd8 device complete with its children.
4269 port = lu.cfg.AllocatePort()
4270 vgname = lu.cfg.GetVGName()
4271 shared_secret = lu.cfg.GenerateDRBDSecret()
4272 dev_data = objects.Disk(dev_type=constants.LD_LV, size=size,
4273 logical_id=(vgname, names[0]))
4274 dev_meta = objects.Disk(dev_type=constants.LD_LV, size=128,
4275 logical_id=(vgname, names[1]))
4276 drbd_dev = objects.Disk(dev_type=constants.LD_DRBD8, size=size,
4277 logical_id=(primary, secondary, port,
4280 children=[dev_data, dev_meta],
4285 def _GenerateDiskTemplate(lu, template_name,
4286 instance_name, primary_node,
4287 secondary_nodes, disk_info,
4288 file_storage_dir, file_driver,
4290 """Generate the entire disk layout for a given template type.
4293 #TODO: compute space requirements
4295 vgname = lu.cfg.GetVGName()
4296 disk_count = len(disk_info)
4298 if template_name == constants.DT_DISKLESS:
4300 elif template_name == constants.DT_PLAIN:
4301 if len(secondary_nodes) != 0:
4302 raise errors.ProgrammerError("Wrong template configuration")
4304 names = _GenerateUniqueNames(lu, [".disk%d" % (base_index + i)
4305 for i in range(disk_count)])
4306 for idx, disk in enumerate(disk_info):
4307 disk_index = idx + base_index
4308 disk_dev = objects.Disk(dev_type=constants.LD_LV, size=disk["size"],
4309 logical_id=(vgname, names[idx]),
4310 iv_name="disk/%d" % disk_index,
4312 disks.append(disk_dev)
4313 elif template_name == constants.DT_DRBD8:
4314 if len(secondary_nodes) != 1:
4315 raise errors.ProgrammerError("Wrong template configuration")
4316 remote_node = secondary_nodes[0]
4317 minors = lu.cfg.AllocateDRBDMinor(
4318 [primary_node, remote_node] * len(disk_info), instance_name)
4321 for lv_prefix in _GenerateUniqueNames(lu, [".disk%d" % (base_index + i)
4322 for i in range(disk_count)]):
4323 names.append(lv_prefix + "_data")
4324 names.append(lv_prefix + "_meta")
4325 for idx, disk in enumerate(disk_info):
4326 disk_index = idx + base_index
4327 disk_dev = _GenerateDRBD8Branch(lu, primary_node, remote_node,
4328 disk["size"], names[idx*2:idx*2+2],
4329 "disk/%d" % disk_index,
4330 minors[idx*2], minors[idx*2+1])
4331 disk_dev.mode = disk["mode"]
4332 disks.append(disk_dev)
4333 elif template_name == constants.DT_FILE:
4334 if len(secondary_nodes) != 0:
4335 raise errors.ProgrammerError("Wrong template configuration")
4337 for idx, disk in enumerate(disk_info):
4338 disk_index = idx + base_index
4339 disk_dev = objects.Disk(dev_type=constants.LD_FILE, size=disk["size"],
4340 iv_name="disk/%d" % disk_index,
4341 logical_id=(file_driver,
4342 "%s/disk%d" % (file_storage_dir,
4345 disks.append(disk_dev)
4347 raise errors.ProgrammerError("Invalid disk template '%s'" % template_name)
4351 def _GetInstanceInfoText(instance):
4352 """Compute that text that should be added to the disk's metadata.
4355 return "originstname+%s" % instance.name
4358 def _CreateDisks(lu, instance):
4359 """Create all disks for an instance.
4361 This abstracts away some work from AddInstance.
4363 @type lu: L{LogicalUnit}
4364 @param lu: the logical unit on whose behalf we execute
4365 @type instance: L{objects.Instance}
4366 @param instance: the instance whose disks we should create
4368 @return: the success of the creation
4371 info = _GetInstanceInfoText(instance)
4372 pnode = instance.primary_node
4374 if instance.disk_template == constants.DT_FILE:
4375 file_storage_dir = os.path.dirname(instance.disks[0].logical_id[1])
4376 result = lu.rpc.call_file_storage_dir_create(pnode, file_storage_dir)
4378 if result.failed or not result.data:
4379 raise errors.OpExecError("Could not connect to node '%s'" % pnode)
4381 if not result.data[0]:
4382 raise errors.OpExecError("Failed to create directory '%s'" %
4385 # Note: this needs to be kept in sync with adding of disks in
4386 # LUSetInstanceParams
4387 for device in instance.disks:
4388 logging.info("Creating volume %s for instance %s",
4389 device.iv_name, instance.name)
4391 for node in instance.all_nodes:
4392 f_create = node == pnode
4393 _CreateBlockDev(lu, node, instance, device, f_create, info, f_create)
4396 def _RemoveDisks(lu, instance):
4397 """Remove all disks for an instance.
4399 This abstracts away some work from `AddInstance()` and
4400 `RemoveInstance()`. Note that in case some of the devices couldn't
4401 be removed, the removal will continue with the other ones (compare
4402 with `_CreateDisks()`).
4404 @type lu: L{LogicalUnit}
4405 @param lu: the logical unit on whose behalf we execute
4406 @type instance: L{objects.Instance}
4407 @param instance: the instance whose disks we should remove
4409 @return: the success of the removal
4412 logging.info("Removing block devices for instance %s", instance.name)
4415 for device in instance.disks:
4416 for node, disk in device.ComputeNodeTree(instance.primary_node):
4417 lu.cfg.SetDiskID(disk, node)
4418 msg = lu.rpc.call_blockdev_remove(node, disk).RemoteFailMsg()
4420 lu.LogWarning("Could not remove block device %s on node %s,"
4421 " continuing anyway: %s", device.iv_name, node, msg)
4424 if instance.disk_template == constants.DT_FILE:
4425 file_storage_dir = os.path.dirname(instance.disks[0].logical_id[1])
4426 result = lu.rpc.call_file_storage_dir_remove(instance.primary_node,
4428 if result.failed or not result.data:
4429 logging.error("Could not remove directory '%s'", file_storage_dir)
4435 def _ComputeDiskSize(disk_template, disks):
4436 """Compute disk size requirements in the volume group
4439 # Required free disk space as a function of disk and swap space
4441 constants.DT_DISKLESS: None,
4442 constants.DT_PLAIN: sum(d["size"] for d in disks),
4443 # 128 MB are added for drbd metadata for each disk
4444 constants.DT_DRBD8: sum(d["size"] + 128 for d in disks),
4445 constants.DT_FILE: None,
4448 if disk_template not in req_size_dict:
4449 raise errors.ProgrammerError("Disk template '%s' size requirement"
4450 " is unknown" % disk_template)
4452 return req_size_dict[disk_template]
4455 def _CheckHVParams(lu, nodenames, hvname, hvparams):
4456 """Hypervisor parameter validation.
4458 This function abstract the hypervisor parameter validation to be
4459 used in both instance create and instance modify.
4461 @type lu: L{LogicalUnit}
4462 @param lu: the logical unit for which we check
4463 @type nodenames: list
4464 @param nodenames: the list of nodes on which we should check
4465 @type hvname: string
4466 @param hvname: the name of the hypervisor we should use
4467 @type hvparams: dict
4468 @param hvparams: the parameters which we need to check
4469 @raise errors.OpPrereqError: if the parameters are not valid
4472 hvinfo = lu.rpc.call_hypervisor_validate_params(nodenames,
4475 for node in nodenames:
4479 msg = info.RemoteFailMsg()
4481 raise errors.OpPrereqError("Hypervisor parameter validation"
4482 " failed on node %s: %s" % (node, msg))
4485 class LUCreateInstance(LogicalUnit):
4486 """Create an instance.
4489 HPATH = "instance-add"
4490 HTYPE = constants.HTYPE_INSTANCE
4491 _OP_REQP = ["instance_name", "disks", "disk_template",
4493 "wait_for_sync", "ip_check", "nics",
4494 "hvparams", "beparams"]
4497 def _ExpandNode(self, node):
4498 """Expands and checks one node name.
4501 node_full = self.cfg.ExpandNodeName(node)
4502 if node_full is None:
4503 raise errors.OpPrereqError("Unknown node %s" % node)
4506 def ExpandNames(self):
4507 """ExpandNames for CreateInstance.
4509 Figure out the right locks for instance creation.
4512 self.needed_locks = {}
4514 # set optional parameters to none if they don't exist
4515 for attr in ["pnode", "snode", "iallocator", "hypervisor"]:
4516 if not hasattr(self.op, attr):
4517 setattr(self.op, attr, None)
4519 # cheap checks, mostly valid constants given
4521 # verify creation mode
4522 if self.op.mode not in (constants.INSTANCE_CREATE,
4523 constants.INSTANCE_IMPORT):
4524 raise errors.OpPrereqError("Invalid instance creation mode '%s'" %
4527 # disk template and mirror node verification
4528 if self.op.disk_template not in constants.DISK_TEMPLATES:
4529 raise errors.OpPrereqError("Invalid disk template name")
4531 if self.op.hypervisor is None:
4532 self.op.hypervisor = self.cfg.GetHypervisorType()
4534 cluster = self.cfg.GetClusterInfo()
4535 enabled_hvs = cluster.enabled_hypervisors
4536 if self.op.hypervisor not in enabled_hvs:
4537 raise errors.OpPrereqError("Selected hypervisor (%s) not enabled in the"
4538 " cluster (%s)" % (self.op.hypervisor,
4539 ",".join(enabled_hvs)))
4541 # check hypervisor parameter syntax (locally)
4542 utils.ForceDictType(self.op.hvparams, constants.HVS_PARAMETER_TYPES)
4543 filled_hvp = cluster.FillDict(cluster.hvparams[self.op.hypervisor],
4545 hv_type = hypervisor.GetHypervisor(self.op.hypervisor)
4546 hv_type.CheckParameterSyntax(filled_hvp)
4547 self.hv_full = filled_hvp
4549 # fill and remember the beparams dict
4550 utils.ForceDictType(self.op.beparams, constants.BES_PARAMETER_TYPES)
4551 self.be_full = cluster.FillDict(cluster.beparams[constants.BEGR_DEFAULT],
4554 #### instance parameters check
4556 # instance name verification
4557 hostname1 = utils.HostInfo(self.op.instance_name)
4558 self.op.instance_name = instance_name = hostname1.name
4560 # this is just a preventive check, but someone might still add this
4561 # instance in the meantime, and creation will fail at lock-add time
4562 if instance_name in self.cfg.GetInstanceList():
4563 raise errors.OpPrereqError("Instance '%s' is already in the cluster" %
4566 self.add_locks[locking.LEVEL_INSTANCE] = instance_name
4570 for nic in self.op.nics:
4571 # ip validity checks
4572 ip = nic.get("ip", None)
4573 if ip is None or ip.lower() == "none":
4575 elif ip.lower() == constants.VALUE_AUTO:
4576 nic_ip = hostname1.ip
4578 if not utils.IsValidIP(ip):
4579 raise errors.OpPrereqError("Given IP address '%s' doesn't look"
4580 " like a valid IP" % ip)
4583 # MAC address verification
4584 mac = nic.get("mac", constants.VALUE_AUTO)
4585 if mac not in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
4586 if not utils.IsValidMac(mac.lower()):
4587 raise errors.OpPrereqError("Invalid MAC address specified: %s" %
4589 # bridge verification
4590 bridge = nic.get("bridge", None)
4592 bridge = self.cfg.GetDefBridge()
4593 self.nics.append(objects.NIC(mac=mac, ip=nic_ip, bridge=bridge))
4595 # disk checks/pre-build
4597 for disk in self.op.disks:
4598 mode = disk.get("mode", constants.DISK_RDWR)
4599 if mode not in constants.DISK_ACCESS_SET:
4600 raise errors.OpPrereqError("Invalid disk access mode '%s'" %
4602 size = disk.get("size", None)
4604 raise errors.OpPrereqError("Missing disk size")
4608 raise errors.OpPrereqError("Invalid disk size '%s'" % size)
4609 self.disks.append({"size": size, "mode": mode})
4611 # used in CheckPrereq for ip ping check
4612 self.check_ip = hostname1.ip
4614 # file storage checks
4615 if (self.op.file_driver and
4616 not self.op.file_driver in constants.FILE_DRIVER):
4617 raise errors.OpPrereqError("Invalid file driver name '%s'" %
4618 self.op.file_driver)
4620 if self.op.file_storage_dir and os.path.isabs(self.op.file_storage_dir):
4621 raise errors.OpPrereqError("File storage directory path not absolute")
4623 ### Node/iallocator related checks
4624 if [self.op.iallocator, self.op.pnode].count(None) != 1:
4625 raise errors.OpPrereqError("One and only one of iallocator and primary"
4626 " node must be given")
4628 if self.op.iallocator:
4629 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
4631 self.op.pnode = self._ExpandNode(self.op.pnode)
4632 nodelist = [self.op.pnode]
4633 if self.op.snode is not None:
4634 self.op.snode = self._ExpandNode(self.op.snode)
4635 nodelist.append(self.op.snode)
4636 self.needed_locks[locking.LEVEL_NODE] = nodelist
4638 # in case of import lock the source node too
4639 if self.op.mode == constants.INSTANCE_IMPORT:
4640 src_node = getattr(self.op, "src_node", None)
4641 src_path = getattr(self.op, "src_path", None)
4643 if src_path is None:
4644 self.op.src_path = src_path = self.op.instance_name
4646 if src_node is None:
4647 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
4648 self.op.src_node = None
4649 if os.path.isabs(src_path):
4650 raise errors.OpPrereqError("Importing an instance from an absolute"
4651 " path requires a source node option.")
4653 self.op.src_node = src_node = self._ExpandNode(src_node)
4654 if self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET:
4655 self.needed_locks[locking.LEVEL_NODE].append(src_node)
4656 if not os.path.isabs(src_path):
4657 self.op.src_path = src_path = \
4658 os.path.join(constants.EXPORT_DIR, src_path)
4660 else: # INSTANCE_CREATE
4661 if getattr(self.op, "os_type", None) is None:
4662 raise errors.OpPrereqError("No guest OS specified")
4664 def _RunAllocator(self):
4665 """Run the allocator based on input opcode.
4668 nics = [n.ToDict() for n in self.nics]
4669 ial = IAllocator(self,
4670 mode=constants.IALLOCATOR_MODE_ALLOC,
4671 name=self.op.instance_name,
4672 disk_template=self.op.disk_template,
4675 vcpus=self.be_full[constants.BE_VCPUS],
4676 mem_size=self.be_full[constants.BE_MEMORY],
4679 hypervisor=self.op.hypervisor,
4682 ial.Run(self.op.iallocator)
4685 raise errors.OpPrereqError("Can't compute nodes using"
4686 " iallocator '%s': %s" % (self.op.iallocator,
4688 if len(ial.nodes) != ial.required_nodes:
4689 raise errors.OpPrereqError("iallocator '%s' returned invalid number"
4690 " of nodes (%s), required %s" %
4691 (self.op.iallocator, len(ial.nodes),
4692 ial.required_nodes))
4693 self.op.pnode = ial.nodes[0]
4694 self.LogInfo("Selected nodes for instance %s via iallocator %s: %s",
4695 self.op.instance_name, self.op.iallocator,
4696 ", ".join(ial.nodes))
4697 if ial.required_nodes == 2:
4698 self.op.snode = ial.nodes[1]
4700 def BuildHooksEnv(self):
4703 This runs on master, primary and secondary nodes of the instance.
4707 "ADD_MODE": self.op.mode,
4709 if self.op.mode == constants.INSTANCE_IMPORT:
4710 env["SRC_NODE"] = self.op.src_node
4711 env["SRC_PATH"] = self.op.src_path
4712 env["SRC_IMAGES"] = self.src_images
4714 env.update(_BuildInstanceHookEnv(
4715 name=self.op.instance_name,
4716 primary_node=self.op.pnode,
4717 secondary_nodes=self.secondaries,
4718 status=self.op.start,
4719 os_type=self.op.os_type,
4720 memory=self.be_full[constants.BE_MEMORY],
4721 vcpus=self.be_full[constants.BE_VCPUS],
4722 nics=[(n.ip, n.bridge, n.mac) for n in self.nics],
4723 disk_template=self.op.disk_template,
4724 disks=[(d["size"], d["mode"]) for d in self.disks],
4727 hypervisor_name=self.op.hypervisor,
4730 nl = ([self.cfg.GetMasterNode(), self.op.pnode] +
4735 def CheckPrereq(self):
4736 """Check prerequisites.
4739 if (not self.cfg.GetVGName() and
4740 self.op.disk_template not in constants.DTS_NOT_LVM):
4741 raise errors.OpPrereqError("Cluster does not support lvm-based"
4744 if self.op.mode == constants.INSTANCE_IMPORT:
4745 src_node = self.op.src_node
4746 src_path = self.op.src_path
4748 if src_node is None:
4749 exp_list = self.rpc.call_export_list(
4750 self.acquired_locks[locking.LEVEL_NODE])
4752 for node in exp_list:
4753 if not exp_list[node].failed and src_path in exp_list[node].data:
4755 self.op.src_node = src_node = node
4756 self.op.src_path = src_path = os.path.join(constants.EXPORT_DIR,
4760 raise errors.OpPrereqError("No export found for relative path %s" %
4763 _CheckNodeOnline(self, src_node)
4764 result = self.rpc.call_export_info(src_node, src_path)
4767 raise errors.OpPrereqError("No export found in dir %s" % src_path)
4769 export_info = result.data
4770 if not export_info.has_section(constants.INISECT_EXP):
4771 raise errors.ProgrammerError("Corrupted export config")
4773 ei_version = export_info.get(constants.INISECT_EXP, 'version')
4774 if (int(ei_version) != constants.EXPORT_VERSION):
4775 raise errors.OpPrereqError("Wrong export version %s (wanted %d)" %
4776 (ei_version, constants.EXPORT_VERSION))
4778 # Check that the new instance doesn't have less disks than the export
4779 instance_disks = len(self.disks)
4780 export_disks = export_info.getint(constants.INISECT_INS, 'disk_count')
4781 if instance_disks < export_disks:
4782 raise errors.OpPrereqError("Not enough disks to import."
4783 " (instance: %d, export: %d)" %
4784 (instance_disks, export_disks))
4786 self.op.os_type = export_info.get(constants.INISECT_EXP, 'os')
4788 for idx in range(export_disks):
4789 option = 'disk%d_dump' % idx
4790 if export_info.has_option(constants.INISECT_INS, option):
4791 # FIXME: are the old os-es, disk sizes, etc. useful?
4792 export_name = export_info.get(constants.INISECT_INS, option)
4793 image = os.path.join(src_path, export_name)
4794 disk_images.append(image)
4796 disk_images.append(False)
4798 self.src_images = disk_images
4800 old_name = export_info.get(constants.INISECT_INS, 'name')
4801 # FIXME: int() here could throw a ValueError on broken exports
4802 exp_nic_count = int(export_info.get(constants.INISECT_INS, 'nic_count'))
4803 if self.op.instance_name == old_name:
4804 for idx, nic in enumerate(self.nics):
4805 if nic.mac == constants.VALUE_AUTO and exp_nic_count >= idx:
4806 nic_mac_ini = 'nic%d_mac' % idx
4807 nic.mac = export_info.get(constants.INISECT_INS, nic_mac_ini)
4809 # ENDIF: self.op.mode == constants.INSTANCE_IMPORT
4810 # ip ping checks (we use the same ip that was resolved in ExpandNames)
4811 if self.op.start and not self.op.ip_check:
4812 raise errors.OpPrereqError("Cannot ignore IP address conflicts when"
4813 " adding an instance in start mode")
4815 if self.op.ip_check:
4816 if utils.TcpPing(self.check_ip, constants.DEFAULT_NODED_PORT):
4817 raise errors.OpPrereqError("IP %s of instance %s already in use" %
4818 (self.check_ip, self.op.instance_name))
4820 #### mac address generation
4821 # By generating here the mac address both the allocator and the hooks get
4822 # the real final mac address rather than the 'auto' or 'generate' value.
4823 # There is a race condition between the generation and the instance object
4824 # creation, which means that we know the mac is valid now, but we're not
4825 # sure it will be when we actually add the instance. If things go bad
4826 # adding the instance will abort because of a duplicate mac, and the
4827 # creation job will fail.
4828 for nic in self.nics:
4829 if nic.mac in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
4830 nic.mac = self.cfg.GenerateMAC()
4834 if self.op.iallocator is not None:
4835 self._RunAllocator()
4837 #### node related checks
4839 # check primary node
4840 self.pnode = pnode = self.cfg.GetNodeInfo(self.op.pnode)
4841 assert self.pnode is not None, \
4842 "Cannot retrieve locked node %s" % self.op.pnode
4844 raise errors.OpPrereqError("Cannot use offline primary node '%s'" %
4847 raise errors.OpPrereqError("Cannot use drained primary node '%s'" %
4850 self.secondaries = []
4852 # mirror node verification
4853 if self.op.disk_template in constants.DTS_NET_MIRROR:
4854 if self.op.snode is None:
4855 raise errors.OpPrereqError("The networked disk templates need"
4857 if self.op.snode == pnode.name:
4858 raise errors.OpPrereqError("The secondary node cannot be"
4859 " the primary node.")
4860 _CheckNodeOnline(self, self.op.snode)
4861 _CheckNodeNotDrained(self, self.op.snode)
4862 self.secondaries.append(self.op.snode)
4864 nodenames = [pnode.name] + self.secondaries
4866 req_size = _ComputeDiskSize(self.op.disk_template,
4869 # Check lv size requirements
4870 if req_size is not None:
4871 nodeinfo = self.rpc.call_node_info(nodenames, self.cfg.GetVGName(),
4873 for node in nodenames:
4874 info = nodeinfo[node]
4878 raise errors.OpPrereqError("Cannot get current information"
4879 " from node '%s'" % node)
4880 vg_free = info.get('vg_free', None)
4881 if not isinstance(vg_free, int):
4882 raise errors.OpPrereqError("Can't compute free disk space on"
4884 if req_size > info['vg_free']:
4885 raise errors.OpPrereqError("Not enough disk space on target node %s."
4886 " %d MB available, %d MB required" %
4887 (node, info['vg_free'], req_size))
4889 _CheckHVParams(self, nodenames, self.op.hypervisor, self.op.hvparams)
4892 result = self.rpc.call_os_get(pnode.name, self.op.os_type)
4894 if not isinstance(result.data, objects.OS) or not result.data:
4895 raise errors.OpPrereqError("OS '%s' not in supported os list for"
4896 " primary node" % self.op.os_type)
4898 # bridge check on primary node
4899 bridges = [n.bridge for n in self.nics]
4900 result = self.rpc.call_bridges_exist(self.pnode.name, bridges)
4903 raise errors.OpPrereqError("One of the target bridges '%s' does not"
4904 " exist on destination node '%s'" %
4905 (",".join(bridges), pnode.name))
4907 # memory check on primary node
4909 _CheckNodeFreeMemory(self, self.pnode.name,
4910 "creating instance %s" % self.op.instance_name,
4911 self.be_full[constants.BE_MEMORY],
4914 def Exec(self, feedback_fn):
4915 """Create and add the instance to the cluster.
4918 instance = self.op.instance_name
4919 pnode_name = self.pnode.name
4921 ht_kind = self.op.hypervisor
4922 if ht_kind in constants.HTS_REQ_PORT:
4923 network_port = self.cfg.AllocatePort()
4927 ##if self.op.vnc_bind_address is None:
4928 ## self.op.vnc_bind_address = constants.VNC_DEFAULT_BIND_ADDRESS
4930 # this is needed because os.path.join does not accept None arguments
4931 if self.op.file_storage_dir is None:
4932 string_file_storage_dir = ""
4934 string_file_storage_dir = self.op.file_storage_dir
4936 # build the full file storage dir path
4937 file_storage_dir = os.path.normpath(os.path.join(
4938 self.cfg.GetFileStorageDir(),
4939 string_file_storage_dir, instance))
4942 disks = _GenerateDiskTemplate(self,
4943 self.op.disk_template,
4944 instance, pnode_name,
4948 self.op.file_driver,
4951 iobj = objects.Instance(name=instance, os=self.op.os_type,
4952 primary_node=pnode_name,
4953 nics=self.nics, disks=disks,
4954 disk_template=self.op.disk_template,
4956 network_port=network_port,
4957 beparams=self.op.beparams,
4958 hvparams=self.op.hvparams,
4959 hypervisor=self.op.hypervisor,
4962 feedback_fn("* creating instance disks...")
4964 _CreateDisks(self, iobj)
4965 except errors.OpExecError:
4966 self.LogWarning("Device creation failed, reverting...")
4968 _RemoveDisks(self, iobj)
4970 self.cfg.ReleaseDRBDMinors(instance)
4973 feedback_fn("adding instance %s to cluster config" % instance)
4975 self.cfg.AddInstance(iobj)
4976 # Declare that we don't want to remove the instance lock anymore, as we've
4977 # added the instance to the config
4978 del self.remove_locks[locking.LEVEL_INSTANCE]
4979 # Unlock all the nodes
4980 if self.op.mode == constants.INSTANCE_IMPORT:
4981 nodes_keep = [self.op.src_node]
4982 nodes_release = [node for node in self.acquired_locks[locking.LEVEL_NODE]
4983 if node != self.op.src_node]
4984 self.context.glm.release(locking.LEVEL_NODE, nodes_release)
4985 self.acquired_locks[locking.LEVEL_NODE] = nodes_keep
4987 self.context.glm.release(locking.LEVEL_NODE)
4988 del self.acquired_locks[locking.LEVEL_NODE]
4990 if self.op.wait_for_sync:
4991 disk_abort = not _WaitForSync(self, iobj)
4992 elif iobj.disk_template in constants.DTS_NET_MIRROR:
4993 # make sure the disks are not degraded (still sync-ing is ok)
4995 feedback_fn("* checking mirrors status")
4996 disk_abort = not _WaitForSync(self, iobj, oneshot=True)
5001 _RemoveDisks(self, iobj)
5002 self.cfg.RemoveInstance(iobj.name)
5003 # Make sure the instance lock gets removed
5004 self.remove_locks[locking.LEVEL_INSTANCE] = iobj.name
5005 raise errors.OpExecError("There are some degraded disks for"
5008 feedback_fn("creating os for instance %s on node %s" %
5009 (instance, pnode_name))
5011 if iobj.disk_template != constants.DT_DISKLESS:
5012 if self.op.mode == constants.INSTANCE_CREATE:
5013 feedback_fn("* running the instance OS create scripts...")
5014 result = self.rpc.call_instance_os_add(pnode_name, iobj)
5015 msg = result.RemoteFailMsg()
5017 raise errors.OpExecError("Could not add os for instance %s"
5019 (instance, pnode_name, msg))
5021 elif self.op.mode == constants.INSTANCE_IMPORT:
5022 feedback_fn("* running the instance OS import scripts...")
5023 src_node = self.op.src_node
5024 src_images = self.src_images
5025 cluster_name = self.cfg.GetClusterName()
5026 import_result = self.rpc.call_instance_os_import(pnode_name, iobj,
5027 src_node, src_images,
5029 import_result.Raise()
5030 for idx, result in enumerate(import_result.data):
5032 self.LogWarning("Could not import the image %s for instance"
5033 " %s, disk %d, on node %s" %
5034 (src_images[idx], instance, idx, pnode_name))
5036 # also checked in the prereq part
5037 raise errors.ProgrammerError("Unknown OS initialization mode '%s'"
5041 iobj.admin_up = True
5042 self.cfg.Update(iobj)
5043 logging.info("Starting instance %s on node %s", instance, pnode_name)
5044 feedback_fn("* starting instance...")
5045 result = self.rpc.call_instance_start(pnode_name, iobj, None, None)
5046 msg = result.RemoteFailMsg()
5048 raise errors.OpExecError("Could not start instance: %s" % msg)
5051 class LUConnectConsole(NoHooksLU):
5052 """Connect to an instance's console.
5054 This is somewhat special in that it returns the command line that
5055 you need to run on the master node in order to connect to the
5059 _OP_REQP = ["instance_name"]
5062 def ExpandNames(self):
5063 self._ExpandAndLockInstance()
5065 def CheckPrereq(self):
5066 """Check prerequisites.
5068 This checks that the instance is in the cluster.
5071 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5072 assert self.instance is not None, \
5073 "Cannot retrieve locked instance %s" % self.op.instance_name
5074 _CheckNodeOnline(self, self.instance.primary_node)
5076 def Exec(self, feedback_fn):
5077 """Connect to the console of an instance
5080 instance = self.instance
5081 node = instance.primary_node
5083 node_insts = self.rpc.call_instance_list([node],
5084 [instance.hypervisor])[node]
5087 if instance.name not in node_insts.data:
5088 raise errors.OpExecError("Instance %s is not running." % instance.name)
5090 logging.debug("Connecting to console of %s on %s", instance.name, node)
5092 hyper = hypervisor.GetHypervisor(instance.hypervisor)
5093 cluster = self.cfg.GetClusterInfo()
5094 # beparams and hvparams are passed separately, to avoid editing the
5095 # instance and then saving the defaults in the instance itself.
5096 hvparams = cluster.FillHV(instance)
5097 beparams = cluster.FillBE(instance)
5098 console_cmd = hyper.GetShellCommandForConsole(instance, hvparams, beparams)
5101 return self.ssh.BuildCmd(node, "root", console_cmd, batch=True, tty=True)
5104 class LUReplaceDisks(LogicalUnit):
5105 """Replace the disks of an instance.
5108 HPATH = "mirrors-replace"
5109 HTYPE = constants.HTYPE_INSTANCE
5110 _OP_REQP = ["instance_name", "mode", "disks"]
5113 def CheckArguments(self):
5114 if not hasattr(self.op, "remote_node"):
5115 self.op.remote_node = None
5116 if not hasattr(self.op, "iallocator"):
5117 self.op.iallocator = None
5119 # check for valid parameter combination
5120 cnt = [self.op.remote_node, self.op.iallocator].count(None)
5121 if self.op.mode == constants.REPLACE_DISK_CHG:
5123 raise errors.OpPrereqError("When changing the secondary either an"
5124 " iallocator script must be used or the"
5127 raise errors.OpPrereqError("Give either the iallocator or the new"
5128 " secondary, not both")
5129 else: # not replacing the secondary
5131 raise errors.OpPrereqError("The iallocator and new node options can"
5132 " be used only when changing the"
5135 def ExpandNames(self):
5136 self._ExpandAndLockInstance()
5138 if self.op.iallocator is not None:
5139 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
5140 elif self.op.remote_node is not None:
5141 remote_node = self.cfg.ExpandNodeName(self.op.remote_node)
5142 if remote_node is None:
5143 raise errors.OpPrereqError("Node '%s' not known" %
5144 self.op.remote_node)
5145 self.op.remote_node = remote_node
5146 # Warning: do not remove the locking of the new secondary here
5147 # unless DRBD8.AddChildren is changed to work in parallel;
5148 # currently it doesn't since parallel invocations of
5149 # FindUnusedMinor will conflict
5150 self.needed_locks[locking.LEVEL_NODE] = [remote_node]
5151 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_APPEND
5153 self.needed_locks[locking.LEVEL_NODE] = []
5154 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5156 def DeclareLocks(self, level):
5157 # If we're not already locking all nodes in the set we have to declare the
5158 # instance's primary/secondary nodes.
5159 if (level == locking.LEVEL_NODE and
5160 self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET):
5161 self._LockInstancesNodes()
5163 def _RunAllocator(self):
5164 """Compute a new secondary node using an IAllocator.
5167 ial = IAllocator(self,
5168 mode=constants.IALLOCATOR_MODE_RELOC,
5169 name=self.op.instance_name,
5170 relocate_from=[self.sec_node])
5172 ial.Run(self.op.iallocator)
5175 raise errors.OpPrereqError("Can't compute nodes using"
5176 " iallocator '%s': %s" % (self.op.iallocator,
5178 if len(ial.nodes) != ial.required_nodes:
5179 raise errors.OpPrereqError("iallocator '%s' returned invalid number"
5180 " of nodes (%s), required %s" %
5181 (len(ial.nodes), ial.required_nodes))
5182 self.op.remote_node = ial.nodes[0]
5183 self.LogInfo("Selected new secondary for the instance: %s",
5184 self.op.remote_node)
5186 def BuildHooksEnv(self):
5189 This runs on the master, the primary and all the secondaries.
5193 "MODE": self.op.mode,
5194 "NEW_SECONDARY": self.op.remote_node,
5195 "OLD_SECONDARY": self.instance.secondary_nodes[0],
5197 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
5199 self.cfg.GetMasterNode(),
5200 self.instance.primary_node,
5202 if self.op.remote_node is not None:
5203 nl.append(self.op.remote_node)
5206 def CheckPrereq(self):
5207 """Check prerequisites.
5209 This checks that the instance is in the cluster.
5212 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5213 assert instance is not None, \
5214 "Cannot retrieve locked instance %s" % self.op.instance_name
5215 self.instance = instance
5217 if instance.disk_template != constants.DT_DRBD8:
5218 raise errors.OpPrereqError("Can only run replace disks for DRBD8-based"
5221 if len(instance.secondary_nodes) != 1:
5222 raise errors.OpPrereqError("The instance has a strange layout,"
5223 " expected one secondary but found %d" %
5224 len(instance.secondary_nodes))
5226 self.sec_node = instance.secondary_nodes[0]
5228 if self.op.iallocator is not None:
5229 self._RunAllocator()
5231 remote_node = self.op.remote_node
5232 if remote_node is not None:
5233 self.remote_node_info = self.cfg.GetNodeInfo(remote_node)
5234 assert self.remote_node_info is not None, \
5235 "Cannot retrieve locked node %s" % remote_node
5237 self.remote_node_info = None
5238 if remote_node == instance.primary_node:
5239 raise errors.OpPrereqError("The specified node is the primary node of"
5241 elif remote_node == self.sec_node:
5242 raise errors.OpPrereqError("The specified node is already the"
5243 " secondary node of the instance.")
5245 if self.op.mode == constants.REPLACE_DISK_PRI:
5246 n1 = self.tgt_node = instance.primary_node
5247 n2 = self.oth_node = self.sec_node
5248 elif self.op.mode == constants.REPLACE_DISK_SEC:
5249 n1 = self.tgt_node = self.sec_node
5250 n2 = self.oth_node = instance.primary_node
5251 elif self.op.mode == constants.REPLACE_DISK_CHG:
5252 n1 = self.new_node = remote_node
5253 n2 = self.oth_node = instance.primary_node
5254 self.tgt_node = self.sec_node
5255 _CheckNodeNotDrained(self, remote_node)
5257 raise errors.ProgrammerError("Unhandled disk replace mode")
5259 _CheckNodeOnline(self, n1)
5260 _CheckNodeOnline(self, n2)
5262 if not self.op.disks:
5263 self.op.disks = range(len(instance.disks))
5265 for disk_idx in self.op.disks:
5266 instance.FindDisk(disk_idx)
5268 def _ExecD8DiskOnly(self, feedback_fn):
5269 """Replace a disk on the primary or secondary for dbrd8.
5271 The algorithm for replace is quite complicated:
5273 1. for each disk to be replaced:
5275 1. create new LVs on the target node with unique names
5276 1. detach old LVs from the drbd device
5277 1. rename old LVs to name_replaced.<time_t>
5278 1. rename new LVs to old LVs
5279 1. attach the new LVs (with the old names now) to the drbd device
5281 1. wait for sync across all devices
5283 1. for each modified disk:
5285 1. remove old LVs (which have the name name_replaces.<time_t>)
5287 Failures are not very well handled.
5291 warning, info = (self.proc.LogWarning, self.proc.LogInfo)
5292 instance = self.instance
5294 vgname = self.cfg.GetVGName()
5297 tgt_node = self.tgt_node
5298 oth_node = self.oth_node
5300 # Step: check device activation
5301 self.proc.LogStep(1, steps_total, "check device existence")
5302 info("checking volume groups")
5303 my_vg = cfg.GetVGName()
5304 results = self.rpc.call_vg_list([oth_node, tgt_node])
5306 raise errors.OpExecError("Can't list volume groups on the nodes")
5307 for node in oth_node, tgt_node:
5309 if res.failed or not res.data or my_vg not in res.data:
5310 raise errors.OpExecError("Volume group '%s' not found on %s" %
5312 for idx, dev in enumerate(instance.disks):
5313 if idx not in self.op.disks:
5315 for node in tgt_node, oth_node:
5316 info("checking disk/%d on %s" % (idx, node))
5317 cfg.SetDiskID(dev, node)
5318 result = self.rpc.call_blockdev_find(node, dev)
5319 msg = result.RemoteFailMsg()
5320 if not msg and not result.payload:
5321 msg = "disk not found"
5323 raise errors.OpExecError("Can't find disk/%d on node %s: %s" %
5326 # Step: check other node consistency
5327 self.proc.LogStep(2, steps_total, "check peer consistency")
5328 for idx, dev in enumerate(instance.disks):
5329 if idx not in self.op.disks:
5331 info("checking disk/%d consistency on %s" % (idx, oth_node))
5332 if not _CheckDiskConsistency(self, dev, oth_node,
5333 oth_node==instance.primary_node):
5334 raise errors.OpExecError("Peer node (%s) has degraded storage, unsafe"
5335 " to replace disks on this node (%s)" %
5336 (oth_node, tgt_node))
5338 # Step: create new storage
5339 self.proc.LogStep(3, steps_total, "allocate new storage")
5340 for idx, dev in enumerate(instance.disks):
5341 if idx not in self.op.disks:
5344 cfg.SetDiskID(dev, tgt_node)
5345 lv_names = [".disk%d_%s" % (idx, suf)
5346 for suf in ["data", "meta"]]
5347 names = _GenerateUniqueNames(self, lv_names)
5348 lv_data = objects.Disk(dev_type=constants.LD_LV, size=size,
5349 logical_id=(vgname, names[0]))
5350 lv_meta = objects.Disk(dev_type=constants.LD_LV, size=128,
5351 logical_id=(vgname, names[1]))
5352 new_lvs = [lv_data, lv_meta]
5353 old_lvs = dev.children
5354 iv_names[dev.iv_name] = (dev, old_lvs, new_lvs)
5355 info("creating new local storage on %s for %s" %
5356 (tgt_node, dev.iv_name))
5357 # we pass force_create=True to force the LVM creation
5358 for new_lv in new_lvs:
5359 _CreateBlockDev(self, tgt_node, instance, new_lv, True,
5360 _GetInstanceInfoText(instance), False)
5362 # Step: for each lv, detach+rename*2+attach
5363 self.proc.LogStep(4, steps_total, "change drbd configuration")
5364 for dev, old_lvs, new_lvs in iv_names.itervalues():
5365 info("detaching %s drbd from local storage" % dev.iv_name)
5366 result = self.rpc.call_blockdev_removechildren(tgt_node, dev, old_lvs)
5369 raise errors.OpExecError("Can't detach drbd from local storage on node"
5370 " %s for device %s" % (tgt_node, dev.iv_name))
5372 #cfg.Update(instance)
5374 # ok, we created the new LVs, so now we know we have the needed
5375 # storage; as such, we proceed on the target node to rename
5376 # old_lv to _old, and new_lv to old_lv; note that we rename LVs
5377 # using the assumption that logical_id == physical_id (which in
5378 # turn is the unique_id on that node)
5380 # FIXME(iustin): use a better name for the replaced LVs
5381 temp_suffix = int(time.time())
5382 ren_fn = lambda d, suff: (d.physical_id[0],
5383 d.physical_id[1] + "_replaced-%s" % suff)
5384 # build the rename list based on what LVs exist on the node
5386 for to_ren in old_lvs:
5387 result = self.rpc.call_blockdev_find(tgt_node, to_ren)
5388 if not result.RemoteFailMsg() and result.payload:
5390 rlist.append((to_ren, ren_fn(to_ren, temp_suffix)))
5392 info("renaming the old LVs on the target node")
5393 result = self.rpc.call_blockdev_rename(tgt_node, rlist)
5396 raise errors.OpExecError("Can't rename old LVs on node %s" % tgt_node)
5397 # now we rename the new LVs to the old LVs
5398 info("renaming the new LVs on the target node")
5399 rlist = [(new, old.physical_id) for old, new in zip(old_lvs, new_lvs)]
5400 result = self.rpc.call_blockdev_rename(tgt_node, rlist)
5403 raise errors.OpExecError("Can't rename new LVs on node %s" % tgt_node)
5405 for old, new in zip(old_lvs, new_lvs):
5406 new.logical_id = old.logical_id
5407 cfg.SetDiskID(new, tgt_node)
5409 for disk in old_lvs:
5410 disk.logical_id = ren_fn(disk, temp_suffix)
5411 cfg.SetDiskID(disk, tgt_node)
5413 # now that the new lvs have the old name, we can add them to the device
5414 info("adding new mirror component on %s" % tgt_node)
5415 result = self.rpc.call_blockdev_addchildren(tgt_node, dev, new_lvs)
5416 if result.failed or not result.data:
5417 for new_lv in new_lvs:
5418 msg = self.rpc.call_blockdev_remove(tgt_node, new_lv).RemoteFailMsg()
5420 warning("Can't rollback device %s: %s", dev, msg,
5421 hint="cleanup manually the unused logical volumes")
5422 raise errors.OpExecError("Can't add local storage to drbd")
5424 dev.children = new_lvs
5425 cfg.Update(instance)
5427 # Step: wait for sync
5429 # this can fail as the old devices are degraded and _WaitForSync
5430 # does a combined result over all disks, so we don't check its
5432 self.proc.LogStep(5, steps_total, "sync devices")
5433 _WaitForSync(self, instance, unlock=True)
5435 # so check manually all the devices
5436 for name, (dev, old_lvs, new_lvs) in iv_names.iteritems():
5437 cfg.SetDiskID(dev, instance.primary_node)
5438 result = self.rpc.call_blockdev_find(instance.primary_node, dev)
5439 msg = result.RemoteFailMsg()
5440 if not msg and not result.payload:
5441 msg = "disk not found"
5443 raise errors.OpExecError("Can't find DRBD device %s: %s" %
5445 if result.payload[5]:
5446 raise errors.OpExecError("DRBD device %s is degraded!" % name)
5448 # Step: remove old storage
5449 self.proc.LogStep(6, steps_total, "removing old storage")
5450 for name, (dev, old_lvs, new_lvs) in iv_names.iteritems():
5451 info("remove logical volumes for %s" % name)
5453 cfg.SetDiskID(lv, tgt_node)
5454 msg = self.rpc.call_blockdev_remove(tgt_node, lv).RemoteFailMsg()
5456 warning("Can't remove old LV: %s" % msg,
5457 hint="manually remove unused LVs")
5460 def _ExecD8Secondary(self, feedback_fn):
5461 """Replace the secondary node for drbd8.
5463 The algorithm for replace is quite complicated:
5464 - for all disks of the instance:
5465 - create new LVs on the new node with same names
5466 - shutdown the drbd device on the old secondary
5467 - disconnect the drbd network on the primary
5468 - create the drbd device on the new secondary
5469 - network attach the drbd on the primary, using an artifice:
5470 the drbd code for Attach() will connect to the network if it
5471 finds a device which is connected to the good local disks but
5473 - wait for sync across all devices
5474 - remove all disks from the old secondary
5476 Failures are not very well handled.
5480 warning, info = (self.proc.LogWarning, self.proc.LogInfo)
5481 instance = self.instance
5485 old_node = self.tgt_node
5486 new_node = self.new_node
5487 pri_node = instance.primary_node
5489 old_node: self.cfg.GetNodeInfo(old_node).secondary_ip,
5490 new_node: self.cfg.GetNodeInfo(new_node).secondary_ip,
5491 pri_node: self.cfg.GetNodeInfo(pri_node).secondary_ip,
5494 # Step: check device activation
5495 self.proc.LogStep(1, steps_total, "check device existence")
5496 info("checking volume groups")
5497 my_vg = cfg.GetVGName()
5498 results = self.rpc.call_vg_list([pri_node, new_node])
5499 for node in pri_node, new_node:
5501 if res.failed or not res.data or my_vg not in res.data:
5502 raise errors.OpExecError("Volume group '%s' not found on %s" %
5504 for idx, dev in enumerate(instance.disks):
5505 if idx not in self.op.disks:
5507 info("checking disk/%d on %s" % (idx, pri_node))
5508 cfg.SetDiskID(dev, pri_node)
5509 result = self.rpc.call_blockdev_find(pri_node, dev)
5510 msg = result.RemoteFailMsg()
5511 if not msg and not result.payload:
5512 msg = "disk not found"
5514 raise errors.OpExecError("Can't find disk/%d on node %s: %s" %
5515 (idx, pri_node, msg))
5517 # Step: check other node consistency
5518 self.proc.LogStep(2, steps_total, "check peer consistency")
5519 for idx, dev in enumerate(instance.disks):
5520 if idx not in self.op.disks:
5522 info("checking disk/%d consistency on %s" % (idx, pri_node))
5523 if not _CheckDiskConsistency(self, dev, pri_node, True, ldisk=True):
5524 raise errors.OpExecError("Primary node (%s) has degraded storage,"
5525 " unsafe to replace the secondary" %
5528 # Step: create new storage
5529 self.proc.LogStep(3, steps_total, "allocate new storage")
5530 for idx, dev in enumerate(instance.disks):
5531 info("adding new local storage on %s for disk/%d" %
5533 # we pass force_create=True to force LVM creation
5534 for new_lv in dev.children:
5535 _CreateBlockDev(self, new_node, instance, new_lv, True,
5536 _GetInstanceInfoText(instance), False)
5538 # Step 4: dbrd minors and drbd setups changes
5539 # after this, we must manually remove the drbd minors on both the
5540 # error and the success paths
5541 minors = cfg.AllocateDRBDMinor([new_node for dev in instance.disks],
5543 logging.debug("Allocated minors %s" % (minors,))
5544 self.proc.LogStep(4, steps_total, "changing drbd configuration")
5545 for idx, (dev, new_minor) in enumerate(zip(instance.disks, minors)):
5546 info("activating a new drbd on %s for disk/%d" % (new_node, idx))
5547 # create new devices on new_node; note that we create two IDs:
5548 # one without port, so the drbd will be activated without
5549 # networking information on the new node at this stage, and one
5550 # with network, for the latter activation in step 4
5551 (o_node1, o_node2, o_port, o_minor1, o_minor2, o_secret) = dev.logical_id
5552 if pri_node == o_node1:
5557 new_alone_id = (pri_node, new_node, None, p_minor, new_minor, o_secret)
5558 new_net_id = (pri_node, new_node, o_port, p_minor, new_minor, o_secret)
5560 iv_names[idx] = (dev, dev.children, new_net_id)
5561 logging.debug("Allocated new_minor: %s, new_logical_id: %s", new_minor,
5563 new_drbd = objects.Disk(dev_type=constants.LD_DRBD8,
5564 logical_id=new_alone_id,
5565 children=dev.children,
5568 _CreateSingleBlockDev(self, new_node, instance, new_drbd,
5569 _GetInstanceInfoText(instance), False)
5570 except errors.GenericError:
5571 self.cfg.ReleaseDRBDMinors(instance.name)
5574 for idx, dev in enumerate(instance.disks):
5575 # we have new devices, shutdown the drbd on the old secondary
5576 info("shutting down drbd for disk/%d on old node" % idx)
5577 cfg.SetDiskID(dev, old_node)
5578 msg = self.rpc.call_blockdev_shutdown(old_node, dev).RemoteFailMsg()
5580 warning("Failed to shutdown drbd for disk/%d on old node: %s" %
5582 hint="Please cleanup this device manually as soon as possible")
5584 info("detaching primary drbds from the network (=> standalone)")
5585 result = self.rpc.call_drbd_disconnect_net([pri_node], nodes_ip,
5586 instance.disks)[pri_node]
5588 msg = result.RemoteFailMsg()
5590 # detaches didn't succeed (unlikely)
5591 self.cfg.ReleaseDRBDMinors(instance.name)
5592 raise errors.OpExecError("Can't detach the disks from the network on"
5593 " old node: %s" % (msg,))
5595 # if we managed to detach at least one, we update all the disks of
5596 # the instance to point to the new secondary
5597 info("updating instance configuration")
5598 for dev, _, new_logical_id in iv_names.itervalues():
5599 dev.logical_id = new_logical_id
5600 cfg.SetDiskID(dev, pri_node)
5601 cfg.Update(instance)
5603 # and now perform the drbd attach
5604 info("attaching primary drbds to new secondary (standalone => connected)")
5605 result = self.rpc.call_drbd_attach_net([pri_node, new_node], nodes_ip,
5606 instance.disks, instance.name,
5608 for to_node, to_result in result.items():
5609 msg = to_result.RemoteFailMsg()
5611 warning("can't attach drbd disks on node %s: %s", to_node, msg,
5612 hint="please do a gnt-instance info to see the"
5615 # this can fail as the old devices are degraded and _WaitForSync
5616 # does a combined result over all disks, so we don't check its
5618 self.proc.LogStep(5, steps_total, "sync devices")
5619 _WaitForSync(self, instance, unlock=True)
5621 # so check manually all the devices
5622 for idx, (dev, old_lvs, _) in iv_names.iteritems():
5623 cfg.SetDiskID(dev, pri_node)
5624 result = self.rpc.call_blockdev_find(pri_node, dev)
5625 msg = result.RemoteFailMsg()
5626 if not msg and not result.payload:
5627 msg = "disk not found"
5629 raise errors.OpExecError("Can't find DRBD device disk/%d: %s" %
5631 if result.payload[5]:
5632 raise errors.OpExecError("DRBD device disk/%d is degraded!" % idx)
5634 self.proc.LogStep(6, steps_total, "removing old storage")
5635 for idx, (dev, old_lvs, _) in iv_names.iteritems():
5636 info("remove logical volumes for disk/%d" % idx)
5638 cfg.SetDiskID(lv, old_node)
5639 msg = self.rpc.call_blockdev_remove(old_node, lv).RemoteFailMsg()
5641 warning("Can't remove LV on old secondary: %s", msg,
5642 hint="Cleanup stale volumes by hand")
5644 def Exec(self, feedback_fn):
5645 """Execute disk replacement.
5647 This dispatches the disk replacement to the appropriate handler.
5650 instance = self.instance
5652 # Activate the instance disks if we're replacing them on a down instance
5653 if not instance.admin_up:
5654 _StartInstanceDisks(self, instance, True)
5656 if self.op.mode == constants.REPLACE_DISK_CHG:
5657 fn = self._ExecD8Secondary
5659 fn = self._ExecD8DiskOnly
5661 ret = fn(feedback_fn)
5663 # Deactivate the instance disks if we're replacing them on a down instance
5664 if not instance.admin_up:
5665 _SafeShutdownInstanceDisks(self, instance)
5670 class LUGrowDisk(LogicalUnit):
5671 """Grow a disk of an instance.
5675 HTYPE = constants.HTYPE_INSTANCE
5676 _OP_REQP = ["instance_name", "disk", "amount", "wait_for_sync"]
5679 def ExpandNames(self):
5680 self._ExpandAndLockInstance()
5681 self.needed_locks[locking.LEVEL_NODE] = []
5682 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5684 def DeclareLocks(self, level):
5685 if level == locking.LEVEL_NODE:
5686 self._LockInstancesNodes()
5688 def BuildHooksEnv(self):
5691 This runs on the master, the primary and all the secondaries.
5695 "DISK": self.op.disk,
5696 "AMOUNT": self.op.amount,
5698 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
5700 self.cfg.GetMasterNode(),
5701 self.instance.primary_node,
5705 def CheckPrereq(self):
5706 """Check prerequisites.
5708 This checks that the instance is in the cluster.
5711 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5712 assert instance is not None, \
5713 "Cannot retrieve locked instance %s" % self.op.instance_name
5714 nodenames = list(instance.all_nodes)
5715 for node in nodenames:
5716 _CheckNodeOnline(self, node)
5719 self.instance = instance
5721 if instance.disk_template not in (constants.DT_PLAIN, constants.DT_DRBD8):
5722 raise errors.OpPrereqError("Instance's disk layout does not support"
5725 self.disk = instance.FindDisk(self.op.disk)
5727 nodeinfo = self.rpc.call_node_info(nodenames, self.cfg.GetVGName(),
5728 instance.hypervisor)
5729 for node in nodenames:
5730 info = nodeinfo[node]
5731 if info.failed or not info.data:
5732 raise errors.OpPrereqError("Cannot get current information"
5733 " from node '%s'" % node)
5734 vg_free = info.data.get('vg_free', None)
5735 if not isinstance(vg_free, int):
5736 raise errors.OpPrereqError("Can't compute free disk space on"
5738 if self.op.amount > vg_free:
5739 raise errors.OpPrereqError("Not enough disk space on target node %s:"
5740 " %d MiB available, %d MiB required" %
5741 (node, vg_free, self.op.amount))
5743 def Exec(self, feedback_fn):
5744 """Execute disk grow.
5747 instance = self.instance
5749 for node in instance.all_nodes:
5750 self.cfg.SetDiskID(disk, node)
5751 result = self.rpc.call_blockdev_grow(node, disk, self.op.amount)
5752 msg = result.RemoteFailMsg()
5754 raise errors.OpExecError("Grow request failed to node %s: %s" %
5756 disk.RecordGrow(self.op.amount)
5757 self.cfg.Update(instance)
5758 if self.op.wait_for_sync:
5759 disk_abort = not _WaitForSync(self, instance)
5761 self.proc.LogWarning("Warning: disk sync-ing has not returned a good"
5762 " status.\nPlease check the instance.")
5765 class LUQueryInstanceData(NoHooksLU):
5766 """Query runtime instance data.
5769 _OP_REQP = ["instances", "static"]
5772 def ExpandNames(self):
5773 self.needed_locks = {}
5774 self.share_locks = dict(((i, 1) for i in locking.LEVELS))
5776 if not isinstance(self.op.instances, list):
5777 raise errors.OpPrereqError("Invalid argument type 'instances'")
5779 if self.op.instances:
5780 self.wanted_names = []
5781 for name in self.op.instances:
5782 full_name = self.cfg.ExpandInstanceName(name)
5783 if full_name is None:
5784 raise errors.OpPrereqError("Instance '%s' not known" % name)
5785 self.wanted_names.append(full_name)
5786 self.needed_locks[locking.LEVEL_INSTANCE] = self.wanted_names
5788 self.wanted_names = None
5789 self.needed_locks[locking.LEVEL_INSTANCE] = locking.ALL_SET
5791 self.needed_locks[locking.LEVEL_NODE] = []
5792 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5794 def DeclareLocks(self, level):
5795 if level == locking.LEVEL_NODE:
5796 self._LockInstancesNodes()
5798 def CheckPrereq(self):
5799 """Check prerequisites.
5801 This only checks the optional instance list against the existing names.
5804 if self.wanted_names is None:
5805 self.wanted_names = self.acquired_locks[locking.LEVEL_INSTANCE]
5807 self.wanted_instances = [self.cfg.GetInstanceInfo(name) for name
5808 in self.wanted_names]
5811 def _ComputeDiskStatus(self, instance, snode, dev):
5812 """Compute block device status.
5815 static = self.op.static
5817 self.cfg.SetDiskID(dev, instance.primary_node)
5818 dev_pstatus = self.rpc.call_blockdev_find(instance.primary_node, dev)
5819 if dev_pstatus.offline:
5822 msg = dev_pstatus.RemoteFailMsg()
5824 raise errors.OpExecError("Can't compute disk status for %s: %s" %
5825 (instance.name, msg))
5826 dev_pstatus = dev_pstatus.payload
5830 if dev.dev_type in constants.LDS_DRBD:
5831 # we change the snode then (otherwise we use the one passed in)
5832 if dev.logical_id[0] == instance.primary_node:
5833 snode = dev.logical_id[1]
5835 snode = dev.logical_id[0]
5837 if snode and not static:
5838 self.cfg.SetDiskID(dev, snode)
5839 dev_sstatus = self.rpc.call_blockdev_find(snode, dev)
5840 if dev_sstatus.offline:
5843 msg = dev_sstatus.RemoteFailMsg()
5845 raise errors.OpExecError("Can't compute disk status for %s: %s" %
5846 (instance.name, msg))
5847 dev_sstatus = dev_sstatus.payload
5852 dev_children = [self._ComputeDiskStatus(instance, snode, child)
5853 for child in dev.children]
5858 "iv_name": dev.iv_name,
5859 "dev_type": dev.dev_type,
5860 "logical_id": dev.logical_id,
5861 "physical_id": dev.physical_id,
5862 "pstatus": dev_pstatus,
5863 "sstatus": dev_sstatus,
5864 "children": dev_children,
5871 def Exec(self, feedback_fn):
5872 """Gather and return data"""
5875 cluster = self.cfg.GetClusterInfo()
5877 for instance in self.wanted_instances:
5878 if not self.op.static:
5879 remote_info = self.rpc.call_instance_info(instance.primary_node,
5881 instance.hypervisor)
5883 remote_info = remote_info.data
5884 if remote_info and "state" in remote_info:
5887 remote_state = "down"
5890 if instance.admin_up:
5893 config_state = "down"
5895 disks = [self._ComputeDiskStatus(instance, None, device)
5896 for device in instance.disks]
5899 "name": instance.name,
5900 "config_state": config_state,
5901 "run_state": remote_state,
5902 "pnode": instance.primary_node,
5903 "snodes": instance.secondary_nodes,
5905 "nics": [(nic.mac, nic.ip, nic.bridge) for nic in instance.nics],
5907 "hypervisor": instance.hypervisor,
5908 "network_port": instance.network_port,
5909 "hv_instance": instance.hvparams,
5910 "hv_actual": cluster.FillHV(instance),
5911 "be_instance": instance.beparams,
5912 "be_actual": cluster.FillBE(instance),
5915 result[instance.name] = idict
5920 class LUSetInstanceParams(LogicalUnit):
5921 """Modifies an instances's parameters.
5924 HPATH = "instance-modify"
5925 HTYPE = constants.HTYPE_INSTANCE
5926 _OP_REQP = ["instance_name"]
5929 def CheckArguments(self):
5930 if not hasattr(self.op, 'nics'):
5932 if not hasattr(self.op, 'disks'):
5934 if not hasattr(self.op, 'beparams'):
5935 self.op.beparams = {}
5936 if not hasattr(self.op, 'hvparams'):
5937 self.op.hvparams = {}
5938 self.op.force = getattr(self.op, "force", False)
5939 if not (self.op.nics or self.op.disks or
5940 self.op.hvparams or self.op.beparams):
5941 raise errors.OpPrereqError("No changes submitted")
5945 for disk_op, disk_dict in self.op.disks:
5946 if disk_op == constants.DDM_REMOVE:
5949 elif disk_op == constants.DDM_ADD:
5952 if not isinstance(disk_op, int):
5953 raise errors.OpPrereqError("Invalid disk index")
5954 if disk_op == constants.DDM_ADD:
5955 mode = disk_dict.setdefault('mode', constants.DISK_RDWR)
5956 if mode not in constants.DISK_ACCESS_SET:
5957 raise errors.OpPrereqError("Invalid disk access mode '%s'" % mode)
5958 size = disk_dict.get('size', None)
5960 raise errors.OpPrereqError("Required disk parameter size missing")
5963 except ValueError, err:
5964 raise errors.OpPrereqError("Invalid disk size parameter: %s" %
5966 disk_dict['size'] = size
5968 # modification of disk
5969 if 'size' in disk_dict:
5970 raise errors.OpPrereqError("Disk size change not possible, use"
5973 if disk_addremove > 1:
5974 raise errors.OpPrereqError("Only one disk add or remove operation"
5975 " supported at a time")
5979 for nic_op, nic_dict in self.op.nics:
5980 if nic_op == constants.DDM_REMOVE:
5983 elif nic_op == constants.DDM_ADD:
5986 if not isinstance(nic_op, int):
5987 raise errors.OpPrereqError("Invalid nic index")
5989 # nic_dict should be a dict
5990 nic_ip = nic_dict.get('ip', None)
5991 if nic_ip is not None:
5992 if nic_ip.lower() == constants.VALUE_NONE:
5993 nic_dict['ip'] = None
5995 if not utils.IsValidIP(nic_ip):
5996 raise errors.OpPrereqError("Invalid IP address '%s'" % nic_ip)
5998 if nic_op == constants.DDM_ADD:
5999 nic_bridge = nic_dict.get('bridge', None)
6000 if nic_bridge is None:
6001 nic_dict['bridge'] = self.cfg.GetDefBridge()
6002 nic_mac = nic_dict.get('mac', None)
6004 nic_dict['mac'] = constants.VALUE_AUTO
6006 if 'mac' in nic_dict:
6007 nic_mac = nic_dict['mac']
6008 if nic_mac not in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
6009 if not utils.IsValidMac(nic_mac):
6010 raise errors.OpPrereqError("Invalid MAC address %s" % nic_mac)
6011 if nic_op != constants.DDM_ADD and nic_mac == constants.VALUE_AUTO:
6012 raise errors.OpPrereqError("'auto' is not a valid MAC address when"
6013 " modifying an existing nic")
6015 if nic_addremove > 1:
6016 raise errors.OpPrereqError("Only one NIC add or remove operation"
6017 " supported at a time")
6019 def ExpandNames(self):
6020 self._ExpandAndLockInstance()
6021 self.needed_locks[locking.LEVEL_NODE] = []
6022 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
6024 def DeclareLocks(self, level):
6025 if level == locking.LEVEL_NODE:
6026 self._LockInstancesNodes()
6028 def BuildHooksEnv(self):
6031 This runs on the master, primary and secondaries.
6035 if constants.BE_MEMORY in self.be_new:
6036 args['memory'] = self.be_new[constants.BE_MEMORY]
6037 if constants.BE_VCPUS in self.be_new:
6038 args['vcpus'] = self.be_new[constants.BE_VCPUS]
6039 # TODO: export disk changes. Note: _BuildInstanceHookEnv* don't export disk
6040 # information at all.
6043 nic_override = dict(self.op.nics)
6044 for idx, nic in enumerate(self.instance.nics):
6045 if idx in nic_override:
6046 this_nic_override = nic_override[idx]
6048 this_nic_override = {}
6049 if 'ip' in this_nic_override:
6050 ip = this_nic_override['ip']
6053 if 'bridge' in this_nic_override:
6054 bridge = this_nic_override['bridge']
6057 if 'mac' in this_nic_override:
6058 mac = this_nic_override['mac']
6061 args['nics'].append((ip, bridge, mac))
6062 if constants.DDM_ADD in nic_override:
6063 ip = nic_override[constants.DDM_ADD].get('ip', None)
6064 bridge = nic_override[constants.DDM_ADD]['bridge']
6065 mac = nic_override[constants.DDM_ADD]['mac']
6066 args['nics'].append((ip, bridge, mac))
6067 elif constants.DDM_REMOVE in nic_override:
6068 del args['nics'][-1]
6070 env = _BuildInstanceHookEnvByObject(self, self.instance, override=args)
6071 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
6074 def CheckPrereq(self):
6075 """Check prerequisites.
6077 This only checks the instance list against the existing names.
6080 self.force = self.op.force
6082 # checking the new params on the primary/secondary nodes
6084 instance = self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
6085 assert self.instance is not None, \
6086 "Cannot retrieve locked instance %s" % self.op.instance_name
6087 pnode = instance.primary_node
6088 nodelist = list(instance.all_nodes)
6090 # hvparams processing
6091 if self.op.hvparams:
6092 i_hvdict = copy.deepcopy(instance.hvparams)
6093 for key, val in self.op.hvparams.iteritems():
6094 if val == constants.VALUE_DEFAULT:
6101 cluster = self.cfg.GetClusterInfo()
6102 utils.ForceDictType(i_hvdict, constants.HVS_PARAMETER_TYPES)
6103 hv_new = cluster.FillDict(cluster.hvparams[instance.hypervisor],
6106 hypervisor.GetHypervisor(
6107 instance.hypervisor).CheckParameterSyntax(hv_new)
6108 _CheckHVParams(self, nodelist, instance.hypervisor, hv_new)
6109 self.hv_new = hv_new # the new actual values
6110 self.hv_inst = i_hvdict # the new dict (without defaults)
6112 self.hv_new = self.hv_inst = {}
6114 # beparams processing
6115 if self.op.beparams:
6116 i_bedict = copy.deepcopy(instance.beparams)
6117 for key, val in self.op.beparams.iteritems():
6118 if val == constants.VALUE_DEFAULT:
6125 cluster = self.cfg.GetClusterInfo()
6126 utils.ForceDictType(i_bedict, constants.BES_PARAMETER_TYPES)
6127 be_new = cluster.FillDict(cluster.beparams[constants.BEGR_DEFAULT],
6129 self.be_new = be_new # the new actual values
6130 self.be_inst = i_bedict # the new dict (without defaults)
6132 self.be_new = self.be_inst = {}
6136 if constants.BE_MEMORY in self.op.beparams and not self.force:
6137 mem_check_list = [pnode]
6138 if be_new[constants.BE_AUTO_BALANCE]:
6139 # either we changed auto_balance to yes or it was from before
6140 mem_check_list.extend(instance.secondary_nodes)
6141 instance_info = self.rpc.call_instance_info(pnode, instance.name,
6142 instance.hypervisor)
6143 nodeinfo = self.rpc.call_node_info(mem_check_list, self.cfg.GetVGName(),
6144 instance.hypervisor)
6145 if nodeinfo[pnode].failed or not isinstance(nodeinfo[pnode].data, dict):
6146 # Assume the primary node is unreachable and go ahead
6147 self.warn.append("Can't get info from primary node %s" % pnode)
6149 if not instance_info.failed and instance_info.data:
6150 current_mem = int(instance_info.data['memory'])
6152 # Assume instance not running
6153 # (there is a slight race condition here, but it's not very probable,
6154 # and we have no other way to check)
6156 miss_mem = (be_new[constants.BE_MEMORY] - current_mem -
6157 nodeinfo[pnode].data['memory_free'])
6159 raise errors.OpPrereqError("This change will prevent the instance"
6160 " from starting, due to %d MB of memory"
6161 " missing on its primary node" % miss_mem)
6163 if be_new[constants.BE_AUTO_BALANCE]:
6164 for node, nres in nodeinfo.iteritems():
6165 if node not in instance.secondary_nodes:
6167 if nres.failed or not isinstance(nres.data, dict):
6168 self.warn.append("Can't get info from secondary node %s" % node)
6169 elif be_new[constants.BE_MEMORY] > nres.data['memory_free']:
6170 self.warn.append("Not enough memory to failover instance to"
6171 " secondary node %s" % node)
6174 for nic_op, nic_dict in self.op.nics:
6175 if nic_op == constants.DDM_REMOVE:
6176 if not instance.nics:
6177 raise errors.OpPrereqError("Instance has no NICs, cannot remove")
6179 if nic_op != constants.DDM_ADD:
6181 if nic_op < 0 or nic_op >= len(instance.nics):
6182 raise errors.OpPrereqError("Invalid NIC index %s, valid values"
6184 (nic_op, len(instance.nics)))
6185 if 'bridge' in nic_dict:
6186 nic_bridge = nic_dict['bridge']
6187 if nic_bridge is None:
6188 raise errors.OpPrereqError('Cannot set the nic bridge to None')
6189 if not self.rpc.call_bridges_exist(pnode, [nic_bridge]):
6190 msg = ("Bridge '%s' doesn't exist on one of"
6191 " the instance nodes" % nic_bridge)
6193 self.warn.append(msg)
6195 raise errors.OpPrereqError(msg)
6196 if 'mac' in nic_dict:
6197 nic_mac = nic_dict['mac']
6199 raise errors.OpPrereqError('Cannot set the nic mac to None')
6200 elif nic_mac in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
6201 # otherwise generate the mac
6202 nic_dict['mac'] = self.cfg.GenerateMAC()
6204 # or validate/reserve the current one
6205 if self.cfg.IsMacInUse(nic_mac):
6206 raise errors.OpPrereqError("MAC address %s already in use"
6207 " in cluster" % nic_mac)
6210 if self.op.disks and instance.disk_template == constants.DT_DISKLESS:
6211 raise errors.OpPrereqError("Disk operations not supported for"
6212 " diskless instances")
6213 for disk_op, disk_dict in self.op.disks:
6214 if disk_op == constants.DDM_REMOVE:
6215 if len(instance.disks) == 1:
6216 raise errors.OpPrereqError("Cannot remove the last disk of"
6218 ins_l = self.rpc.call_instance_list([pnode], [instance.hypervisor])
6219 ins_l = ins_l[pnode]
6220 if ins_l.failed or not isinstance(ins_l.data, list):
6221 raise errors.OpPrereqError("Can't contact node '%s'" % pnode)
6222 if instance.name in ins_l.data:
6223 raise errors.OpPrereqError("Instance is running, can't remove"
6226 if (disk_op == constants.DDM_ADD and
6227 len(instance.nics) >= constants.MAX_DISKS):
6228 raise errors.OpPrereqError("Instance has too many disks (%d), cannot"
6229 " add more" % constants.MAX_DISKS)
6230 if disk_op not in (constants.DDM_ADD, constants.DDM_REMOVE):
6232 if disk_op < 0 or disk_op >= len(instance.disks):
6233 raise errors.OpPrereqError("Invalid disk index %s, valid values"
6235 (disk_op, len(instance.disks)))
6239 def Exec(self, feedback_fn):
6240 """Modifies an instance.
6242 All parameters take effect only at the next restart of the instance.
6245 # Process here the warnings from CheckPrereq, as we don't have a
6246 # feedback_fn there.
6247 for warn in self.warn:
6248 feedback_fn("WARNING: %s" % warn)
6251 instance = self.instance
6253 for disk_op, disk_dict in self.op.disks:
6254 if disk_op == constants.DDM_REMOVE:
6255 # remove the last disk
6256 device = instance.disks.pop()
6257 device_idx = len(instance.disks)
6258 for node, disk in device.ComputeNodeTree(instance.primary_node):
6259 self.cfg.SetDiskID(disk, node)
6260 msg = self.rpc.call_blockdev_remove(node, disk).RemoteFailMsg()
6262 self.LogWarning("Could not remove disk/%d on node %s: %s,"
6263 " continuing anyway", device_idx, node, msg)
6264 result.append(("disk/%d" % device_idx, "remove"))
6265 elif disk_op == constants.DDM_ADD:
6267 if instance.disk_template == constants.DT_FILE:
6268 file_driver, file_path = instance.disks[0].logical_id
6269 file_path = os.path.dirname(file_path)
6271 file_driver = file_path = None
6272 disk_idx_base = len(instance.disks)
6273 new_disk = _GenerateDiskTemplate(self,
6274 instance.disk_template,
6275 instance.name, instance.primary_node,
6276 instance.secondary_nodes,
6281 instance.disks.append(new_disk)
6282 info = _GetInstanceInfoText(instance)
6284 logging.info("Creating volume %s for instance %s",
6285 new_disk.iv_name, instance.name)
6286 # Note: this needs to be kept in sync with _CreateDisks
6288 for node in instance.all_nodes:
6289 f_create = node == instance.primary_node
6291 _CreateBlockDev(self, node, instance, new_disk,
6292 f_create, info, f_create)
6293 except errors.OpExecError, err:
6294 self.LogWarning("Failed to create volume %s (%s) on"
6296 new_disk.iv_name, new_disk, node, err)
6297 result.append(("disk/%d" % disk_idx_base, "add:size=%s,mode=%s" %
6298 (new_disk.size, new_disk.mode)))
6300 # change a given disk
6301 instance.disks[disk_op].mode = disk_dict['mode']
6302 result.append(("disk.mode/%d" % disk_op, disk_dict['mode']))
6304 for nic_op, nic_dict in self.op.nics:
6305 if nic_op == constants.DDM_REMOVE:
6306 # remove the last nic
6307 del instance.nics[-1]
6308 result.append(("nic.%d" % len(instance.nics), "remove"))
6309 elif nic_op == constants.DDM_ADD:
6310 # mac and bridge should be set, by now
6311 mac = nic_dict['mac']
6312 bridge = nic_dict['bridge']
6313 new_nic = objects.NIC(mac=mac, ip=nic_dict.get('ip', None),
6315 instance.nics.append(new_nic)
6316 result.append(("nic.%d" % (len(instance.nics) - 1),
6317 "add:mac=%s,ip=%s,bridge=%s" %
6318 (new_nic.mac, new_nic.ip, new_nic.bridge)))
6320 # change a given nic
6321 for key in 'mac', 'ip', 'bridge':
6323 setattr(instance.nics[nic_op], key, nic_dict[key])
6324 result.append(("nic.%s/%d" % (key, nic_op), nic_dict[key]))
6327 if self.op.hvparams:
6328 instance.hvparams = self.hv_inst
6329 for key, val in self.op.hvparams.iteritems():
6330 result.append(("hv/%s" % key, val))
6333 if self.op.beparams:
6334 instance.beparams = self.be_inst
6335 for key, val in self.op.beparams.iteritems():
6336 result.append(("be/%s" % key, val))
6338 self.cfg.Update(instance)
6343 class LUQueryExports(NoHooksLU):
6344 """Query the exports list
6347 _OP_REQP = ['nodes']
6350 def ExpandNames(self):
6351 self.needed_locks = {}
6352 self.share_locks[locking.LEVEL_NODE] = 1
6353 if not self.op.nodes:
6354 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
6356 self.needed_locks[locking.LEVEL_NODE] = \
6357 _GetWantedNodes(self, self.op.nodes)
6359 def CheckPrereq(self):
6360 """Check prerequisites.
6363 self.nodes = self.acquired_locks[locking.LEVEL_NODE]
6365 def Exec(self, feedback_fn):
6366 """Compute the list of all the exported system images.
6369 @return: a dictionary with the structure node->(export-list)
6370 where export-list is a list of the instances exported on
6374 rpcresult = self.rpc.call_export_list(self.nodes)
6376 for node in rpcresult:
6377 if rpcresult[node].failed:
6378 result[node] = False
6380 result[node] = rpcresult[node].data
6385 class LUExportInstance(LogicalUnit):
6386 """Export an instance to an image in the cluster.
6389 HPATH = "instance-export"
6390 HTYPE = constants.HTYPE_INSTANCE
6391 _OP_REQP = ["instance_name", "target_node", "shutdown"]
6394 def ExpandNames(self):
6395 self._ExpandAndLockInstance()
6396 # FIXME: lock only instance primary and destination node
6398 # Sad but true, for now we have do lock all nodes, as we don't know where
6399 # the previous export might be, and and in this LU we search for it and
6400 # remove it from its current node. In the future we could fix this by:
6401 # - making a tasklet to search (share-lock all), then create the new one,
6402 # then one to remove, after
6403 # - removing the removal operation altogether
6404 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
6406 def DeclareLocks(self, level):
6407 """Last minute lock declaration."""
6408 # All nodes are locked anyway, so nothing to do here.
6410 def BuildHooksEnv(self):
6413 This will run on the master, primary node and target node.
6417 "EXPORT_NODE": self.op.target_node,
6418 "EXPORT_DO_SHUTDOWN": self.op.shutdown,
6420 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
6421 nl = [self.cfg.GetMasterNode(), self.instance.primary_node,
6422 self.op.target_node]
6425 def CheckPrereq(self):
6426 """Check prerequisites.
6428 This checks that the instance and node names are valid.
6431 instance_name = self.op.instance_name
6432 self.instance = self.cfg.GetInstanceInfo(instance_name)
6433 assert self.instance is not None, \
6434 "Cannot retrieve locked instance %s" % self.op.instance_name
6435 _CheckNodeOnline(self, self.instance.primary_node)
6437 self.dst_node = self.cfg.GetNodeInfo(
6438 self.cfg.ExpandNodeName(self.op.target_node))
6440 if self.dst_node is None:
6441 # This is wrong node name, not a non-locked node
6442 raise errors.OpPrereqError("Wrong node name %s" % self.op.target_node)
6443 _CheckNodeOnline(self, self.dst_node.name)
6444 _CheckNodeNotDrained(self, self.dst_node.name)
6446 # instance disk type verification
6447 for disk in self.instance.disks:
6448 if disk.dev_type == constants.LD_FILE:
6449 raise errors.OpPrereqError("Export not supported for instances with"
6450 " file-based disks")
6452 def Exec(self, feedback_fn):
6453 """Export an instance to an image in the cluster.
6456 instance = self.instance
6457 dst_node = self.dst_node
6458 src_node = instance.primary_node
6459 if self.op.shutdown:
6460 # shutdown the instance, but not the disks
6461 result = self.rpc.call_instance_shutdown(src_node, instance)
6462 msg = result.RemoteFailMsg()
6464 raise errors.OpExecError("Could not shutdown instance %s on"
6466 (instance.name, src_node, msg))
6468 vgname = self.cfg.GetVGName()
6472 # set the disks ID correctly since call_instance_start needs the
6473 # correct drbd minor to create the symlinks
6474 for disk in instance.disks:
6475 self.cfg.SetDiskID(disk, src_node)
6480 for idx, disk in enumerate(instance.disks):
6481 # new_dev_name will be a snapshot of an lvm leaf of the one we passed
6482 new_dev_name = self.rpc.call_blockdev_snapshot(src_node, disk)
6483 if new_dev_name.failed or not new_dev_name.data:
6484 self.LogWarning("Could not snapshot disk/%d on node %s",
6486 snap_disks.append(False)
6488 new_dev = objects.Disk(dev_type=constants.LD_LV, size=disk.size,
6489 logical_id=(vgname, new_dev_name.data),
6490 physical_id=(vgname, new_dev_name.data),
6491 iv_name=disk.iv_name)
6492 snap_disks.append(new_dev)
6495 if self.op.shutdown and instance.admin_up:
6496 result = self.rpc.call_instance_start(src_node, instance, None, None)
6497 msg = result.RemoteFailMsg()
6499 _ShutdownInstanceDisks(self, instance)
6500 raise errors.OpExecError("Could not start instance: %s" % msg)
6502 # TODO: check for size
6504 cluster_name = self.cfg.GetClusterName()
6505 for idx, dev in enumerate(snap_disks):
6507 result = self.rpc.call_snapshot_export(src_node, dev, dst_node.name,
6508 instance, cluster_name, idx)
6509 if result.failed or not result.data:
6510 self.LogWarning("Could not export disk/%d from node %s to"
6511 " node %s", idx, src_node, dst_node.name)
6512 dresults.append(False)
6514 dresults.append(True)
6515 msg = self.rpc.call_blockdev_remove(src_node, dev).RemoteFailMsg()
6517 self.LogWarning("Could not remove snapshot for disk/%d from node"
6518 " %s: %s", idx, src_node, msg)
6520 dresults.append(False)
6522 result = self.rpc.call_finalize_export(dst_node.name, instance, snap_disks)
6524 if result.failed or not result.data:
6525 self.LogWarning("Could not finalize export for instance %s on node %s",
6526 instance.name, dst_node.name)
6529 nodelist = self.cfg.GetNodeList()
6530 nodelist.remove(dst_node.name)
6532 # on one-node clusters nodelist will be empty after the removal
6533 # if we proceed the backup would be removed because OpQueryExports
6534 # substitutes an empty list with the full cluster node list.
6536 exportlist = self.rpc.call_export_list(nodelist)
6537 for node in exportlist:
6538 if exportlist[node].failed:
6540 if instance.name in exportlist[node].data:
6541 if not self.rpc.call_export_remove(node, instance.name):
6542 self.LogWarning("Could not remove older export for instance %s"
6543 " on node %s", instance.name, node)
6544 return fin_resu, dresults
6547 class LURemoveExport(NoHooksLU):
6548 """Remove exports related to the named instance.
6551 _OP_REQP = ["instance_name"]
6554 def ExpandNames(self):
6555 self.needed_locks = {}
6556 # We need all nodes to be locked in order for RemoveExport to work, but we
6557 # don't need to lock the instance itself, as nothing will happen to it (and
6558 # we can remove exports also for a removed instance)
6559 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
6561 def CheckPrereq(self):
6562 """Check prerequisites.
6566 def Exec(self, feedback_fn):
6567 """Remove any export.
6570 instance_name = self.cfg.ExpandInstanceName(self.op.instance_name)
6571 # If the instance was not found we'll try with the name that was passed in.
6572 # This will only work if it was an FQDN, though.
6574 if not instance_name:
6576 instance_name = self.op.instance_name
6578 exportlist = self.rpc.call_export_list(self.acquired_locks[
6579 locking.LEVEL_NODE])
6581 for node in exportlist:
6582 if exportlist[node].failed:
6583 self.LogWarning("Failed to query node %s, continuing" % node)
6585 if instance_name in exportlist[node].data:
6587 result = self.rpc.call_export_remove(node, instance_name)
6588 if result.failed or not result.data:
6589 logging.error("Could not remove export for instance %s"
6590 " on node %s", instance_name, node)
6592 if fqdn_warn and not found:
6593 feedback_fn("Export not found. If trying to remove an export belonging"
6594 " to a deleted instance please use its Fully Qualified"
6598 class TagsLU(NoHooksLU):
6601 This is an abstract class which is the parent of all the other tags LUs.
6605 def ExpandNames(self):
6606 self.needed_locks = {}
6607 if self.op.kind == constants.TAG_NODE:
6608 name = self.cfg.ExpandNodeName(self.op.name)
6610 raise errors.OpPrereqError("Invalid node name (%s)" %
6613 self.needed_locks[locking.LEVEL_NODE] = name
6614 elif self.op.kind == constants.TAG_INSTANCE:
6615 name = self.cfg.ExpandInstanceName(self.op.name)
6617 raise errors.OpPrereqError("Invalid instance name (%s)" %
6620 self.needed_locks[locking.LEVEL_INSTANCE] = name
6622 def CheckPrereq(self):
6623 """Check prerequisites.
6626 if self.op.kind == constants.TAG_CLUSTER:
6627 self.target = self.cfg.GetClusterInfo()
6628 elif self.op.kind == constants.TAG_NODE:
6629 self.target = self.cfg.GetNodeInfo(self.op.name)
6630 elif self.op.kind == constants.TAG_INSTANCE:
6631 self.target = self.cfg.GetInstanceInfo(self.op.name)
6633 raise errors.OpPrereqError("Wrong tag type requested (%s)" %
6637 class LUGetTags(TagsLU):
6638 """Returns the tags of a given object.
6641 _OP_REQP = ["kind", "name"]
6644 def Exec(self, feedback_fn):
6645 """Returns the tag list.
6648 return list(self.target.GetTags())
6651 class LUSearchTags(NoHooksLU):
6652 """Searches the tags for a given pattern.
6655 _OP_REQP = ["pattern"]
6658 def ExpandNames(self):
6659 self.needed_locks = {}
6661 def CheckPrereq(self):
6662 """Check prerequisites.
6664 This checks the pattern passed for validity by compiling it.
6668 self.re = re.compile(self.op.pattern)
6669 except re.error, err:
6670 raise errors.OpPrereqError("Invalid search pattern '%s': %s" %
6671 (self.op.pattern, err))
6673 def Exec(self, feedback_fn):
6674 """Returns the tag list.
6678 tgts = [("/cluster", cfg.GetClusterInfo())]
6679 ilist = cfg.GetAllInstancesInfo().values()
6680 tgts.extend([("/instances/%s" % i.name, i) for i in ilist])
6681 nlist = cfg.GetAllNodesInfo().values()
6682 tgts.extend([("/nodes/%s" % n.name, n) for n in nlist])
6684 for path, target in tgts:
6685 for tag in target.GetTags():
6686 if self.re.search(tag):
6687 results.append((path, tag))
6691 class LUAddTags(TagsLU):
6692 """Sets a tag on a given object.
6695 _OP_REQP = ["kind", "name", "tags"]
6698 def CheckPrereq(self):
6699 """Check prerequisites.
6701 This checks the type and length of the tag name and value.
6704 TagsLU.CheckPrereq(self)
6705 for tag in self.op.tags:
6706 objects.TaggableObject.ValidateTag(tag)
6708 def Exec(self, feedback_fn):
6713 for tag in self.op.tags:
6714 self.target.AddTag(tag)
6715 except errors.TagError, err:
6716 raise errors.OpExecError("Error while setting tag: %s" % str(err))
6718 self.cfg.Update(self.target)
6719 except errors.ConfigurationError:
6720 raise errors.OpRetryError("There has been a modification to the"
6721 " config file and the operation has been"
6722 " aborted. Please retry.")
6725 class LUDelTags(TagsLU):
6726 """Delete a list of tags from a given object.
6729 _OP_REQP = ["kind", "name", "tags"]
6732 def CheckPrereq(self):
6733 """Check prerequisites.
6735 This checks that we have the given tag.
6738 TagsLU.CheckPrereq(self)
6739 for tag in self.op.tags:
6740 objects.TaggableObject.ValidateTag(tag)
6741 del_tags = frozenset(self.op.tags)
6742 cur_tags = self.target.GetTags()
6743 if not del_tags <= cur_tags:
6744 diff_tags = del_tags - cur_tags
6745 diff_names = ["'%s'" % tag for tag in diff_tags]
6747 raise errors.OpPrereqError("Tag(s) %s not found" %
6748 (",".join(diff_names)))
6750 def Exec(self, feedback_fn):
6751 """Remove the tag from the object.
6754 for tag in self.op.tags:
6755 self.target.RemoveTag(tag)
6757 self.cfg.Update(self.target)
6758 except errors.ConfigurationError:
6759 raise errors.OpRetryError("There has been a modification to the"
6760 " config file and the operation has been"
6761 " aborted. Please retry.")
6764 class LUTestDelay(NoHooksLU):
6765 """Sleep for a specified amount of time.
6767 This LU sleeps on the master and/or nodes for a specified amount of
6771 _OP_REQP = ["duration", "on_master", "on_nodes"]
6774 def ExpandNames(self):
6775 """Expand names and set required locks.
6777 This expands the node list, if any.
6780 self.needed_locks = {}
6781 if self.op.on_nodes:
6782 # _GetWantedNodes can be used here, but is not always appropriate to use
6783 # this way in ExpandNames. Check LogicalUnit.ExpandNames docstring for
6785 self.op.on_nodes = _GetWantedNodes(self, self.op.on_nodes)
6786 self.needed_locks[locking.LEVEL_NODE] = self.op.on_nodes
6788 def CheckPrereq(self):
6789 """Check prerequisites.
6793 def Exec(self, feedback_fn):
6794 """Do the actual sleep.
6797 if self.op.on_master:
6798 if not utils.TestDelay(self.op.duration):
6799 raise errors.OpExecError("Error during master delay test")
6800 if self.op.on_nodes:
6801 result = self.rpc.call_test_delay(self.op.on_nodes, self.op.duration)
6803 raise errors.OpExecError("Complete failure from rpc call")
6804 for node, node_result in result.items():
6806 if not node_result.data:
6807 raise errors.OpExecError("Failure during rpc call to node %s,"
6808 " result: %s" % (node, node_result.data))
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:
6911 if not isinstance(nresult.data, dict):
6912 raise errors.OpExecError("Can't get data for node %s" % nname)
6913 remote_info = nresult.data
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))
6920 remote_info[attr] = int(remote_info[attr])
6921 except ValueError, err:
6922 raise errors.OpExecError("Node '%s' returned invalid value"
6923 " for '%s': %s" % (nname, attr, err))
6924 # compute memory used by primary instances
6925 i_p_mem = i_p_up_mem = 0
6926 for iinfo, beinfo in i_list:
6927 if iinfo.primary_node == nname:
6928 i_p_mem += beinfo[constants.BE_MEMORY]
6929 if iinfo.name not in node_iinfo[nname].data:
6932 i_used_mem = int(node_iinfo[nname].data[iinfo.name]['memory'])
6933 i_mem_diff = beinfo[constants.BE_MEMORY] - i_used_mem
6934 remote_info['memory_free'] -= max(0, i_mem_diff)
6937 i_p_up_mem += beinfo[constants.BE_MEMORY]
6939 # compute memory used by instances
6941 "total_memory": remote_info['memory_total'],
6942 "reserved_memory": remote_info['memory_dom0'],
6943 "free_memory": remote_info['memory_free'],
6944 "total_disk": remote_info['vg_size'],
6945 "free_disk": remote_info['vg_free'],
6946 "total_cpus": remote_info['cpu_total'],
6947 "i_pri_memory": i_p_mem,
6948 "i_pri_up_memory": i_p_up_mem,
6952 node_results[nname] = pnr
6953 data["nodes"] = node_results
6957 for iinfo, beinfo in i_list:
6958 nic_data = [{"mac": n.mac, "ip": n.ip, "bridge": n.bridge}
6959 for n in iinfo.nics]
6961 "tags": list(iinfo.GetTags()),
6962 "admin_up": iinfo.admin_up,
6963 "vcpus": beinfo[constants.BE_VCPUS],
6964 "memory": beinfo[constants.BE_MEMORY],
6966 "nodes": [iinfo.primary_node] + list(iinfo.secondary_nodes),
6968 "disks": [{"size": dsk.size, "mode": dsk.mode} for dsk in iinfo.disks],
6969 "disk_template": iinfo.disk_template,
6970 "hypervisor": iinfo.hypervisor,
6972 pir["disk_space_total"] = _ComputeDiskSize(iinfo.disk_template,
6974 instance_data[iinfo.name] = pir
6976 data["instances"] = instance_data
6980 def _AddNewInstance(self):
6981 """Add new instance data to allocator structure.
6983 This in combination with _AllocatorGetClusterData will create the
6984 correct structure needed as input for the allocator.
6986 The checks for the completeness of the opcode must have already been
6992 disk_space = _ComputeDiskSize(self.disk_template, self.disks)
6994 if self.disk_template in constants.DTS_NET_MIRROR:
6995 self.required_nodes = 2
6997 self.required_nodes = 1
7001 "disk_template": self.disk_template,
7004 "vcpus": self.vcpus,
7005 "memory": self.mem_size,
7006 "disks": self.disks,
7007 "disk_space_total": disk_space,
7009 "required_nodes": self.required_nodes,
7011 data["request"] = request
7013 def _AddRelocateInstance(self):
7014 """Add relocate instance data to allocator structure.
7016 This in combination with _IAllocatorGetClusterData will create the
7017 correct structure needed as input for the allocator.
7019 The checks for the completeness of the opcode must have already been
7023 instance = self.lu.cfg.GetInstanceInfo(self.name)
7024 if instance is None:
7025 raise errors.ProgrammerError("Unknown instance '%s' passed to"
7026 " IAllocator" % self.name)
7028 if instance.disk_template not in constants.DTS_NET_MIRROR:
7029 raise errors.OpPrereqError("Can't relocate non-mirrored instances")
7031 if len(instance.secondary_nodes) != 1:
7032 raise errors.OpPrereqError("Instance has not exactly one secondary node")
7034 self.required_nodes = 1
7035 disk_sizes = [{'size': disk.size} for disk in instance.disks]
7036 disk_space = _ComputeDiskSize(instance.disk_template, disk_sizes)
7041 "disk_space_total": disk_space,
7042 "required_nodes": self.required_nodes,
7043 "relocate_from": self.relocate_from,
7045 self.in_data["request"] = request
7047 def _BuildInputData(self):
7048 """Build input data structures.
7051 self._ComputeClusterData()
7053 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
7054 self._AddNewInstance()
7056 self._AddRelocateInstance()
7058 self.in_text = serializer.Dump(self.in_data)
7060 def Run(self, name, validate=True, call_fn=None):
7061 """Run an instance allocator and return the results.
7065 call_fn = self.lu.rpc.call_iallocator_runner
7067 result = call_fn(self.lu.cfg.GetMasterNode(), name, self.in_text)
7070 if not isinstance(result.data, (list, tuple)) or len(result.data) != 4:
7071 raise errors.OpExecError("Invalid result from master iallocator runner")
7073 rcode, stdout, stderr, fail = result.data
7075 if rcode == constants.IARUN_NOTFOUND:
7076 raise errors.OpExecError("Can't find allocator '%s'" % name)
7077 elif rcode == constants.IARUN_FAILURE:
7078 raise errors.OpExecError("Instance allocator call failed: %s,"
7079 " output: %s" % (fail, stdout+stderr))
7080 self.out_text = stdout
7082 self._ValidateResult()
7084 def _ValidateResult(self):
7085 """Process the allocator results.
7087 This will process and if successful save the result in
7088 self.out_data and the other parameters.
7092 rdict = serializer.Load(self.out_text)
7093 except Exception, err:
7094 raise errors.OpExecError("Can't parse iallocator results: %s" % str(err))
7096 if not isinstance(rdict, dict):
7097 raise errors.OpExecError("Can't parse iallocator results: not a dict")
7099 for key in "success", "info", "nodes":
7100 if key not in rdict:
7101 raise errors.OpExecError("Can't parse iallocator results:"
7102 " missing key '%s'" % key)
7103 setattr(self, key, rdict[key])
7105 if not isinstance(rdict["nodes"], list):
7106 raise errors.OpExecError("Can't parse iallocator results: 'nodes' key"
7108 self.out_data = rdict
7111 class LUTestAllocator(NoHooksLU):
7112 """Run allocator tests.
7114 This LU runs the allocator tests
7117 _OP_REQP = ["direction", "mode", "name"]
7119 def CheckPrereq(self):
7120 """Check prerequisites.
7122 This checks the opcode parameters depending on the director and mode test.
7125 if self.op.mode == constants.IALLOCATOR_MODE_ALLOC:
7126 for attr in ["name", "mem_size", "disks", "disk_template",
7127 "os", "tags", "nics", "vcpus"]:
7128 if not hasattr(self.op, attr):
7129 raise errors.OpPrereqError("Missing attribute '%s' on opcode input" %
7131 iname = self.cfg.ExpandInstanceName(self.op.name)
7132 if iname is not None:
7133 raise errors.OpPrereqError("Instance '%s' already in the cluster" %
7135 if not isinstance(self.op.nics, list):
7136 raise errors.OpPrereqError("Invalid parameter 'nics'")
7137 for row in self.op.nics:
7138 if (not isinstance(row, dict) or
7141 "bridge" not in row):
7142 raise errors.OpPrereqError("Invalid contents of the"
7143 " 'nics' parameter")
7144 if not isinstance(self.op.disks, list):
7145 raise errors.OpPrereqError("Invalid parameter 'disks'")
7146 for row in self.op.disks:
7147 if (not isinstance(row, dict) or
7148 "size" not in row or
7149 not isinstance(row["size"], int) or
7150 "mode" not in row or
7151 row["mode"] not in ['r', 'w']):
7152 raise errors.OpPrereqError("Invalid contents of the"
7153 " 'disks' parameter")
7154 if not hasattr(self.op, "hypervisor") or self.op.hypervisor is None:
7155 self.op.hypervisor = self.cfg.GetHypervisorType()
7156 elif self.op.mode == constants.IALLOCATOR_MODE_RELOC:
7157 if not hasattr(self.op, "name"):
7158 raise errors.OpPrereqError("Missing attribute 'name' on opcode input")
7159 fname = self.cfg.ExpandInstanceName(self.op.name)
7161 raise errors.OpPrereqError("Instance '%s' not found for relocation" %
7163 self.op.name = fname
7164 self.relocate_from = self.cfg.GetInstanceInfo(fname).secondary_nodes
7166 raise errors.OpPrereqError("Invalid test allocator mode '%s'" %
7169 if self.op.direction == constants.IALLOCATOR_DIR_OUT:
7170 if not hasattr(self.op, "allocator") or self.op.allocator is None:
7171 raise errors.OpPrereqError("Missing allocator name")
7172 elif self.op.direction != constants.IALLOCATOR_DIR_IN:
7173 raise errors.OpPrereqError("Wrong allocator test '%s'" %
7176 def Exec(self, feedback_fn):
7177 """Run the allocator test.
7180 if self.op.mode == constants.IALLOCATOR_MODE_ALLOC:
7181 ial = IAllocator(self,
7184 mem_size=self.op.mem_size,
7185 disks=self.op.disks,
7186 disk_template=self.op.disk_template,
7190 vcpus=self.op.vcpus,
7191 hypervisor=self.op.hypervisor,
7194 ial = IAllocator(self,
7197 relocate_from=list(self.relocate_from),
7200 if self.op.direction == constants.IALLOCATOR_DIR_IN:
7201 result = ial.in_text
7203 ial.Run(self.op.allocator, validate=False)
7204 result = ial.out_text