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 # pylint: disable-msg=C0103
88 self.LogInfo = processor.LogInfo # pylint: disable-msg=C0103
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): # pylint: disable-msg=W0223
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 = {
1348 locking.LEVEL_NODE: [],
1349 locking.LEVEL_INSTANCE: self.wanted_names,
1351 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
1353 self.wanted_names = None
1354 self.needed_locks = {
1355 locking.LEVEL_NODE: locking.ALL_SET,
1356 locking.LEVEL_INSTANCE: locking.ALL_SET,
1358 self.share_locks = dict(((i, 1) for i in locking.LEVELS))
1360 def DeclareLocks(self, level):
1361 if level == locking.LEVEL_NODE and self.wanted_names is not None:
1362 self._LockInstancesNodes(primary_only=True)
1364 def CheckPrereq(self):
1365 """Check prerequisites.
1367 This only checks the optional instance list against the existing names.
1370 if self.wanted_names is None:
1371 self.wanted_names = self.acquired_locks[locking.LEVEL_INSTANCE]
1373 self.wanted_instances = [self.cfg.GetInstanceInfo(name) for name
1374 in self.wanted_names]
1376 def _EnsureChildSizes(self, disk):
1377 """Ensure children of the disk have the needed disk size.
1379 This is valid mainly for DRBD8 and fixes an issue where the
1380 children have smaller disk size.
1382 @param disk: an L{ganeti.objects.Disk} object
1385 if disk.dev_type == constants.LD_DRBD8:
1386 assert disk.children, "Empty children for DRBD8?"
1387 fchild = disk.children[0]
1388 mismatch = fchild.size < disk.size
1390 self.LogInfo("Child disk has size %d, parent %d, fixing",
1391 fchild.size, disk.size)
1392 fchild.size = disk.size
1394 # and we recurse on this child only, not on the metadev
1395 return self._EnsureChildSizes(fchild) or mismatch
1399 def Exec(self, feedback_fn):
1400 """Verify the size of cluster disks.
1403 # TODO: check child disks too
1404 # TODO: check differences in size between primary/secondary nodes
1406 for instance in self.wanted_instances:
1407 pnode = instance.primary_node
1408 if pnode not in per_node_disks:
1409 per_node_disks[pnode] = []
1410 for idx, disk in enumerate(instance.disks):
1411 per_node_disks[pnode].append((instance, idx, disk))
1414 for node, dskl in per_node_disks.items():
1415 newl = [v[2].Copy() for v in dskl]
1417 self.cfg.SetDiskID(dsk, node)
1418 result = self.rpc.call_blockdev_getsizes(node, newl)
1420 self.LogWarning("Failure in blockdev_getsizes call to node"
1421 " %s, ignoring", node)
1423 if len(result.data) != len(dskl):
1424 self.LogWarning("Invalid result from node %s, ignoring node results",
1427 for ((instance, idx, disk), size) in zip(dskl, result.data):
1429 self.LogWarning("Disk %d of instance %s did not return size"
1430 " information, ignoring", idx, instance.name)
1432 if not isinstance(size, (int, long)):
1433 self.LogWarning("Disk %d of instance %s did not return valid"
1434 " size information, ignoring", idx, instance.name)
1437 if size != disk.size:
1438 self.LogInfo("Disk %d of instance %s has mismatched size,"
1439 " correcting: recorded %d, actual %d", idx,
1440 instance.name, disk.size, size)
1442 self.cfg.Update(instance)
1443 changed.append((instance.name, idx, size))
1444 if self._EnsureChildSizes(disk):
1445 self.cfg.Update(instance)
1446 changed.append((instance.name, idx, disk.size))
1450 class LURenameCluster(LogicalUnit):
1451 """Rename the cluster.
1454 HPATH = "cluster-rename"
1455 HTYPE = constants.HTYPE_CLUSTER
1458 def BuildHooksEnv(self):
1463 "OP_TARGET": self.cfg.GetClusterName(),
1464 "NEW_NAME": self.op.name,
1466 mn = self.cfg.GetMasterNode()
1467 return env, [mn], [mn]
1469 def CheckPrereq(self):
1470 """Verify that the passed name is a valid one.
1473 hostname = utils.HostInfo(self.op.name)
1475 new_name = hostname.name
1476 self.ip = new_ip = hostname.ip
1477 old_name = self.cfg.GetClusterName()
1478 old_ip = self.cfg.GetMasterIP()
1479 if new_name == old_name and new_ip == old_ip:
1480 raise errors.OpPrereqError("Neither the name nor the IP address of the"
1481 " cluster has changed")
1482 if new_ip != old_ip:
1483 if utils.TcpPing(new_ip, constants.DEFAULT_NODED_PORT):
1484 raise errors.OpPrereqError("The given cluster IP address (%s) is"
1485 " reachable on the network. Aborting." %
1488 self.op.name = new_name
1490 def Exec(self, feedback_fn):
1491 """Rename the cluster.
1494 clustername = self.op.name
1497 # shutdown the master IP
1498 master = self.cfg.GetMasterNode()
1499 result = self.rpc.call_node_stop_master(master, False)
1500 if result.failed or not result.data:
1501 raise errors.OpExecError("Could not disable the master role")
1504 cluster = self.cfg.GetClusterInfo()
1505 cluster.cluster_name = clustername
1506 cluster.master_ip = ip
1507 self.cfg.Update(cluster)
1509 # update the known hosts file
1510 ssh.WriteKnownHostsFile(self.cfg, constants.SSH_KNOWN_HOSTS_FILE)
1511 node_list = self.cfg.GetNodeList()
1513 node_list.remove(master)
1516 result = self.rpc.call_upload_file(node_list,
1517 constants.SSH_KNOWN_HOSTS_FILE)
1518 for to_node, to_result in result.iteritems():
1519 if to_result.failed or not to_result.data:
1520 logging.error("Copy of file %s to node %s failed",
1521 constants.SSH_KNOWN_HOSTS_FILE, to_node)
1524 result = self.rpc.call_node_start_master(master, False, False)
1525 if result.failed or not result.data:
1526 self.LogWarning("Could not re-enable the master role on"
1527 " the master, please restart manually.")
1530 def _RecursiveCheckIfLVMBased(disk):
1531 """Check if the given disk or its children are lvm-based.
1533 @type disk: L{objects.Disk}
1534 @param disk: the disk to check
1536 @return: boolean indicating whether a LD_LV dev_type was found or not
1540 for chdisk in disk.children:
1541 if _RecursiveCheckIfLVMBased(chdisk):
1543 return disk.dev_type == constants.LD_LV
1546 class LUSetClusterParams(LogicalUnit):
1547 """Change the parameters of the cluster.
1550 HPATH = "cluster-modify"
1551 HTYPE = constants.HTYPE_CLUSTER
1555 def CheckArguments(self):
1559 if not hasattr(self.op, "candidate_pool_size"):
1560 self.op.candidate_pool_size = None
1561 if self.op.candidate_pool_size is not None:
1563 self.op.candidate_pool_size = int(self.op.candidate_pool_size)
1564 except (ValueError, TypeError), err:
1565 raise errors.OpPrereqError("Invalid candidate_pool_size value: %s" %
1567 if self.op.candidate_pool_size < 1:
1568 raise errors.OpPrereqError("At least one master candidate needed")
1570 def ExpandNames(self):
1571 # FIXME: in the future maybe other cluster params won't require checking on
1572 # all nodes to be modified.
1573 self.needed_locks = {
1574 locking.LEVEL_NODE: locking.ALL_SET,
1576 self.share_locks[locking.LEVEL_NODE] = 1
1578 def BuildHooksEnv(self):
1583 "OP_TARGET": self.cfg.GetClusterName(),
1584 "NEW_VG_NAME": self.op.vg_name,
1586 mn = self.cfg.GetMasterNode()
1587 return env, [mn], [mn]
1589 def CheckPrereq(self):
1590 """Check prerequisites.
1592 This checks whether the given params don't conflict and
1593 if the given volume group is valid.
1596 if self.op.vg_name is not None and not self.op.vg_name:
1597 instances = self.cfg.GetAllInstancesInfo().values()
1598 for inst in instances:
1599 for disk in inst.disks:
1600 if _RecursiveCheckIfLVMBased(disk):
1601 raise errors.OpPrereqError("Cannot disable lvm storage while"
1602 " lvm-based instances exist")
1604 node_list = self.acquired_locks[locking.LEVEL_NODE]
1606 # if vg_name not None, checks given volume group on all nodes
1608 vglist = self.rpc.call_vg_list(node_list)
1609 for node in node_list:
1610 if vglist[node].failed:
1611 # ignoring down node
1612 self.LogWarning("Node %s unreachable/error, ignoring" % node)
1614 vgstatus = utils.CheckVolumeGroupSize(vglist[node].data,
1616 constants.MIN_VG_SIZE)
1618 raise errors.OpPrereqError("Error on node '%s': %s" %
1621 self.cluster = cluster = self.cfg.GetClusterInfo()
1622 # validate beparams changes
1623 if self.op.beparams:
1624 utils.ForceDictType(self.op.beparams, constants.BES_PARAMETER_TYPES)
1625 self.new_beparams = cluster.FillDict(
1626 cluster.beparams[constants.BEGR_DEFAULT], self.op.beparams)
1628 # hypervisor list/parameters
1629 self.new_hvparams = cluster.FillDict(cluster.hvparams, {})
1630 if self.op.hvparams:
1631 if not isinstance(self.op.hvparams, dict):
1632 raise errors.OpPrereqError("Invalid 'hvparams' parameter on input")
1633 for hv_name, hv_dict in self.op.hvparams.items():
1634 if hv_name not in self.new_hvparams:
1635 self.new_hvparams[hv_name] = hv_dict
1637 self.new_hvparams[hv_name].update(hv_dict)
1639 if self.op.enabled_hypervisors is not None:
1640 self.hv_list = self.op.enabled_hypervisors
1641 if not self.hv_list:
1642 raise errors.OpPrereqError("Enabled hypervisors list must contain at"
1643 " least one member")
1644 invalid_hvs = set(self.hv_list) - constants.HYPER_TYPES
1646 raise errors.OpPrereqError("Enabled hypervisors contains invalid"
1647 " entries: %s" % invalid_hvs)
1649 self.hv_list = cluster.enabled_hypervisors
1651 if self.op.hvparams or self.op.enabled_hypervisors is not None:
1652 # either the enabled list has changed, or the parameters have, validate
1653 for hv_name, hv_params in self.new_hvparams.items():
1654 if ((self.op.hvparams and hv_name in self.op.hvparams) or
1655 (self.op.enabled_hypervisors and
1656 hv_name in self.op.enabled_hypervisors)):
1657 # either this is a new hypervisor, or its parameters have changed
1658 hv_class = hypervisor.GetHypervisor(hv_name)
1659 utils.ForceDictType(hv_params, constants.HVS_PARAMETER_TYPES)
1660 hv_class.CheckParameterSyntax(hv_params)
1661 _CheckHVParams(self, node_list, hv_name, hv_params)
1663 def Exec(self, feedback_fn):
1664 """Change the parameters of the cluster.
1667 if self.op.vg_name is not None:
1668 new_volume = self.op.vg_name
1671 if new_volume != self.cfg.GetVGName():
1672 self.cfg.SetVGName(new_volume)
1674 feedback_fn("Cluster LVM configuration already in desired"
1675 " state, not changing")
1676 if self.op.hvparams:
1677 self.cluster.hvparams = self.new_hvparams
1678 if self.op.enabled_hypervisors is not None:
1679 self.cluster.enabled_hypervisors = self.op.enabled_hypervisors
1680 if self.op.beparams:
1681 self.cluster.beparams[constants.BEGR_DEFAULT] = self.new_beparams
1682 if self.op.candidate_pool_size is not None:
1683 self.cluster.candidate_pool_size = self.op.candidate_pool_size
1684 # we need to update the pool size here, otherwise the save will fail
1685 _AdjustCandidatePool(self)
1687 self.cfg.Update(self.cluster)
1690 class LURedistributeConfig(NoHooksLU):
1691 """Force the redistribution of cluster configuration.
1693 This is a very simple LU.
1699 def ExpandNames(self):
1700 self.needed_locks = {
1701 locking.LEVEL_NODE: locking.ALL_SET,
1703 self.share_locks[locking.LEVEL_NODE] = 1
1705 def CheckPrereq(self):
1706 """Check prerequisites.
1710 def Exec(self, feedback_fn):
1711 """Redistribute the configuration.
1714 self.cfg.Update(self.cfg.GetClusterInfo())
1717 def _WaitForSync(lu, instance, oneshot=False, unlock=False):
1718 """Sleep and poll for an instance's disk to sync.
1721 if not instance.disks:
1725 lu.proc.LogInfo("Waiting for instance %s to sync disks." % instance.name)
1727 node = instance.primary_node
1729 for dev in instance.disks:
1730 lu.cfg.SetDiskID(dev, node)
1733 degr_retries = 10 # in seconds, as we sleep 1 second each time
1737 cumul_degraded = False
1738 rstats = lu.rpc.call_blockdev_getmirrorstatus(node, instance.disks)
1739 if rstats.failed or not rstats.data:
1740 lu.LogWarning("Can't get any data from node %s", node)
1743 raise errors.RemoteError("Can't contact node %s for mirror data,"
1744 " aborting." % node)
1747 rstats = rstats.data
1749 for i, mstat in enumerate(rstats):
1751 lu.LogWarning("Can't compute data for node %s/%s",
1752 node, instance.disks[i].iv_name)
1754 # we ignore the ldisk parameter
1755 perc_done, est_time, is_degraded, _ = mstat
1756 cumul_degraded = cumul_degraded or (is_degraded and perc_done is None)
1757 if perc_done is not None:
1759 if est_time is not None:
1760 rem_time = "%d estimated seconds remaining" % est_time
1763 rem_time = "no time estimate"
1764 lu.proc.LogInfo("- device %s: %5.2f%% done, %s" %
1765 (instance.disks[i].iv_name, perc_done, rem_time))
1767 # if we're done but degraded, let's do a few small retries, to
1768 # make sure we see a stable and not transient situation; therefore
1769 # we force restart of the loop
1770 if (done or oneshot) and cumul_degraded and degr_retries > 0:
1771 logging.info("Degraded disks found, %d retries left", degr_retries)
1779 time.sleep(min(60, max_time))
1782 lu.proc.LogInfo("Instance %s's disks are in sync." % instance.name)
1783 return not cumul_degraded
1786 def _CheckDiskConsistency(lu, dev, node, on_primary, ldisk=False):
1787 """Check that mirrors are not degraded.
1789 The ldisk parameter, if True, will change the test from the
1790 is_degraded attribute (which represents overall non-ok status for
1791 the device(s)) to the ldisk (representing the local storage status).
1794 lu.cfg.SetDiskID(dev, node)
1801 if on_primary or dev.AssembleOnSecondary():
1802 rstats = lu.rpc.call_blockdev_find(node, dev)
1803 msg = rstats.RemoteFailMsg()
1805 lu.LogWarning("Can't find disk on node %s: %s", node, msg)
1807 elif not rstats.payload:
1808 lu.LogWarning("Can't find disk on node %s", node)
1811 result = result and (not rstats.payload[idx])
1813 for child in dev.children:
1814 result = result and _CheckDiskConsistency(lu, child, node, on_primary)
1819 class LUDiagnoseOS(NoHooksLU):
1820 """Logical unit for OS diagnose/query.
1823 _OP_REQP = ["output_fields", "names"]
1825 _FIELDS_STATIC = utils.FieldSet()
1826 _FIELDS_DYNAMIC = utils.FieldSet("name", "valid", "node_status")
1828 def ExpandNames(self):
1830 raise errors.OpPrereqError("Selective OS query not supported")
1832 _CheckOutputFields(static=self._FIELDS_STATIC,
1833 dynamic=self._FIELDS_DYNAMIC,
1834 selected=self.op.output_fields)
1836 # Lock all nodes, in shared mode
1837 # Temporary removal of locks, should be reverted later
1838 # TODO: reintroduce locks when they are lighter-weight
1839 self.needed_locks = {}
1840 #self.share_locks[locking.LEVEL_NODE] = 1
1841 #self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
1843 def CheckPrereq(self):
1844 """Check prerequisites.
1849 def _DiagnoseByOS(node_list, rlist):
1850 """Remaps a per-node return list into an a per-os per-node dictionary
1852 @param node_list: a list with the names of all nodes
1853 @param rlist: a map with node names as keys and OS objects as values
1856 @return: a dictionary with osnames as keys and as value another map, with
1857 nodes as keys and list of OS objects as values, eg::
1859 {"debian-etch": {"node1": [<object>,...],
1860 "node2": [<object>,]}
1865 # we build here the list of nodes that didn't fail the RPC (at RPC
1866 # level), so that nodes with a non-responding node daemon don't
1867 # make all OSes invalid
1868 good_nodes = [node_name for node_name in rlist
1869 if not rlist[node_name].failed]
1870 for node_name, nr in rlist.iteritems():
1871 if nr.failed or not nr.data:
1873 for os_obj in nr.data:
1874 if os_obj.name not in all_os:
1875 # build a list of nodes for this os containing empty lists
1876 # for each node in node_list
1877 all_os[os_obj.name] = {}
1878 for nname in good_nodes:
1879 all_os[os_obj.name][nname] = []
1880 all_os[os_obj.name][node_name].append(os_obj)
1883 def Exec(self, feedback_fn):
1884 """Compute the list of OSes.
1887 valid_nodes = [node for node in self.cfg.GetOnlineNodeList()]
1888 node_data = self.rpc.call_os_diagnose(valid_nodes)
1889 if node_data == False:
1890 raise errors.OpExecError("Can't gather the list of OSes")
1891 pol = self._DiagnoseByOS(valid_nodes, node_data)
1893 for os_name, os_data in pol.iteritems():
1895 for field in self.op.output_fields:
1898 elif field == "valid":
1899 val = utils.all([osl and osl[0] for osl in os_data.values()])
1900 elif field == "node_status":
1902 for node_name, nos_list in os_data.iteritems():
1903 val[node_name] = [(v.status, v.path) for v in nos_list]
1905 raise errors.ParameterError(field)
1912 class LURemoveNode(LogicalUnit):
1913 """Logical unit for removing a node.
1916 HPATH = "node-remove"
1917 HTYPE = constants.HTYPE_NODE
1918 _OP_REQP = ["node_name"]
1920 def BuildHooksEnv(self):
1923 This doesn't run on the target node in the pre phase as a failed
1924 node would then be impossible to remove.
1928 "OP_TARGET": self.op.node_name,
1929 "NODE_NAME": self.op.node_name,
1931 all_nodes = self.cfg.GetNodeList()
1932 all_nodes.remove(self.op.node_name)
1933 return env, all_nodes, all_nodes
1935 def CheckPrereq(self):
1936 """Check prerequisites.
1939 - the node exists in the configuration
1940 - it does not have primary or secondary instances
1941 - it's not the master
1943 Any errors are signaled by raising errors.OpPrereqError.
1946 node = self.cfg.GetNodeInfo(self.cfg.ExpandNodeName(self.op.node_name))
1948 raise errors.OpPrereqError, ("Node '%s' is unknown." % self.op.node_name)
1950 instance_list = self.cfg.GetInstanceList()
1952 masternode = self.cfg.GetMasterNode()
1953 if node.name == masternode:
1954 raise errors.OpPrereqError("Node is the master node,"
1955 " you need to failover first.")
1957 for instance_name in instance_list:
1958 instance = self.cfg.GetInstanceInfo(instance_name)
1959 if node.name in instance.all_nodes:
1960 raise errors.OpPrereqError("Instance %s is still running on the node,"
1961 " please remove first." % instance_name)
1962 self.op.node_name = node.name
1965 def Exec(self, feedback_fn):
1966 """Removes the node from the cluster.
1970 logging.info("Stopping the node daemon and removing configs from node %s",
1973 self.context.RemoveNode(node.name)
1975 self.rpc.call_node_leave_cluster(node.name)
1977 # Promote nodes to master candidate as needed
1978 _AdjustCandidatePool(self)
1981 class LUQueryNodes(NoHooksLU):
1982 """Logical unit for querying nodes.
1985 _OP_REQP = ["output_fields", "names", "use_locking"]
1987 _FIELDS_DYNAMIC = utils.FieldSet(
1989 "mtotal", "mnode", "mfree",
1991 "ctotal", "cnodes", "csockets",
1994 _FIELDS_STATIC = utils.FieldSet(
1995 "name", "pinst_cnt", "sinst_cnt",
1996 "pinst_list", "sinst_list",
1997 "pip", "sip", "tags",
2006 def ExpandNames(self):
2007 _CheckOutputFields(static=self._FIELDS_STATIC,
2008 dynamic=self._FIELDS_DYNAMIC,
2009 selected=self.op.output_fields)
2011 self.needed_locks = {}
2012 self.share_locks[locking.LEVEL_NODE] = 1
2015 self.wanted = _GetWantedNodes(self, self.op.names)
2017 self.wanted = locking.ALL_SET
2019 self.do_node_query = self._FIELDS_STATIC.NonMatching(self.op.output_fields)
2020 self.do_locking = self.do_node_query and self.op.use_locking
2022 # if we don't request only static fields, we need to lock the nodes
2023 self.needed_locks[locking.LEVEL_NODE] = self.wanted
2026 def CheckPrereq(self):
2027 """Check prerequisites.
2030 # The validation of the node list is done in the _GetWantedNodes,
2031 # if non empty, and if empty, there's no validation to do
2034 def Exec(self, feedback_fn):
2035 """Computes the list of nodes and their attributes.
2038 all_info = self.cfg.GetAllNodesInfo()
2040 nodenames = self.acquired_locks[locking.LEVEL_NODE]
2041 elif self.wanted != locking.ALL_SET:
2042 nodenames = self.wanted
2043 missing = set(nodenames).difference(all_info.keys())
2045 raise errors.OpExecError(
2046 "Some nodes were removed before retrieving their data: %s" % missing)
2048 nodenames = all_info.keys()
2050 nodenames = utils.NiceSort(nodenames)
2051 nodelist = [all_info[name] for name in nodenames]
2053 # begin data gathering
2055 if self.do_node_query:
2057 node_data = self.rpc.call_node_info(nodenames, self.cfg.GetVGName(),
2058 self.cfg.GetHypervisorType())
2059 for name in nodenames:
2060 nodeinfo = node_data[name]
2061 if not nodeinfo.failed and nodeinfo.data:
2062 nodeinfo = nodeinfo.data
2063 fn = utils.TryConvert
2065 "mtotal": fn(int, nodeinfo.get('memory_total', None)),
2066 "mnode": fn(int, nodeinfo.get('memory_dom0', None)),
2067 "mfree": fn(int, nodeinfo.get('memory_free', None)),
2068 "dtotal": fn(int, nodeinfo.get('vg_size', None)),
2069 "dfree": fn(int, nodeinfo.get('vg_free', None)),
2070 "ctotal": fn(int, nodeinfo.get('cpu_total', None)),
2071 "bootid": nodeinfo.get('bootid', None),
2072 "cnodes": fn(int, nodeinfo.get('cpu_nodes', None)),
2073 "csockets": fn(int, nodeinfo.get('cpu_sockets', None)),
2076 live_data[name] = {}
2078 live_data = dict.fromkeys(nodenames, {})
2080 node_to_primary = dict([(name, set()) for name in nodenames])
2081 node_to_secondary = dict([(name, set()) for name in nodenames])
2083 inst_fields = frozenset(("pinst_cnt", "pinst_list",
2084 "sinst_cnt", "sinst_list"))
2085 if inst_fields & frozenset(self.op.output_fields):
2086 inst_data = self.cfg.GetAllInstancesInfo()
2088 for instance_name, inst in inst_data.items():
2089 if inst.primary_node in node_to_primary:
2090 node_to_primary[inst.primary_node].add(inst.name)
2091 for secnode in inst.secondary_nodes:
2092 if secnode in node_to_secondary:
2093 node_to_secondary[secnode].add(inst.name)
2095 master_node = self.cfg.GetMasterNode()
2097 # end data gathering
2100 for node in nodelist:
2102 for field in self.op.output_fields:
2105 elif field == "pinst_list":
2106 val = list(node_to_primary[node.name])
2107 elif field == "sinst_list":
2108 val = list(node_to_secondary[node.name])
2109 elif field == "pinst_cnt":
2110 val = len(node_to_primary[node.name])
2111 elif field == "sinst_cnt":
2112 val = len(node_to_secondary[node.name])
2113 elif field == "pip":
2114 val = node.primary_ip
2115 elif field == "sip":
2116 val = node.secondary_ip
2117 elif field == "tags":
2118 val = list(node.GetTags())
2119 elif field == "serial_no":
2120 val = node.serial_no
2121 elif field == "master_candidate":
2122 val = node.master_candidate
2123 elif field == "master":
2124 val = node.name == master_node
2125 elif field == "offline":
2127 elif field == "drained":
2129 elif self._FIELDS_DYNAMIC.Matches(field):
2130 val = live_data[node.name].get(field, None)
2131 elif field == "role":
2132 if node.name == master_node:
2134 elif node.master_candidate:
2143 raise errors.ParameterError(field)
2144 node_output.append(val)
2145 output.append(node_output)
2150 class LUQueryNodeVolumes(NoHooksLU):
2151 """Logical unit for getting volumes on node(s).
2154 _OP_REQP = ["nodes", "output_fields"]
2156 _FIELDS_DYNAMIC = utils.FieldSet("phys", "vg", "name", "size", "instance")
2157 _FIELDS_STATIC = utils.FieldSet("node")
2159 def ExpandNames(self):
2160 _CheckOutputFields(static=self._FIELDS_STATIC,
2161 dynamic=self._FIELDS_DYNAMIC,
2162 selected=self.op.output_fields)
2164 self.needed_locks = {}
2165 self.share_locks[locking.LEVEL_NODE] = 1
2166 if not self.op.nodes:
2167 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
2169 self.needed_locks[locking.LEVEL_NODE] = \
2170 _GetWantedNodes(self, self.op.nodes)
2172 def CheckPrereq(self):
2173 """Check prerequisites.
2175 This checks that the fields required are valid output fields.
2178 self.nodes = self.acquired_locks[locking.LEVEL_NODE]
2180 def Exec(self, feedback_fn):
2181 """Computes the list of nodes and their attributes.
2184 nodenames = self.nodes
2185 volumes = self.rpc.call_node_volumes(nodenames)
2187 ilist = [self.cfg.GetInstanceInfo(iname) for iname
2188 in self.cfg.GetInstanceList()]
2190 lv_by_node = dict([(inst, inst.MapLVsByNode()) for inst in ilist])
2193 for node in nodenames:
2194 if node not in volumes or volumes[node].failed or not volumes[node].data:
2197 node_vols = volumes[node].data[:]
2198 node_vols.sort(key=lambda vol: vol['dev'])
2200 for vol in node_vols:
2202 for field in self.op.output_fields:
2205 elif field == "phys":
2209 elif field == "name":
2211 elif field == "size":
2212 val = int(float(vol['size']))
2213 elif field == "instance":
2215 if node not in lv_by_node[inst]:
2217 if vol['name'] in lv_by_node[inst][node]:
2223 raise errors.ParameterError(field)
2224 node_output.append(str(val))
2226 output.append(node_output)
2231 class LUAddNode(LogicalUnit):
2232 """Logical unit for adding node to the cluster.
2236 HTYPE = constants.HTYPE_NODE
2237 _OP_REQP = ["node_name"]
2239 def BuildHooksEnv(self):
2242 This will run on all nodes before, and on all nodes + the new node after.
2246 "OP_TARGET": self.op.node_name,
2247 "NODE_NAME": self.op.node_name,
2248 "NODE_PIP": self.op.primary_ip,
2249 "NODE_SIP": self.op.secondary_ip,
2251 nodes_0 = self.cfg.GetNodeList()
2252 nodes_1 = nodes_0 + [self.op.node_name, ]
2253 return env, nodes_0, nodes_1
2255 def CheckPrereq(self):
2256 """Check prerequisites.
2259 - the new node is not already in the config
2261 - its parameters (single/dual homed) matches the cluster
2263 Any errors are signaled by raising errors.OpPrereqError.
2266 node_name = self.op.node_name
2269 dns_data = utils.HostInfo(node_name)
2271 node = dns_data.name
2272 primary_ip = self.op.primary_ip = dns_data.ip
2273 secondary_ip = getattr(self.op, "secondary_ip", None)
2274 if secondary_ip is None:
2275 secondary_ip = primary_ip
2276 if not utils.IsValidIP(secondary_ip):
2277 raise errors.OpPrereqError("Invalid secondary IP given")
2278 self.op.secondary_ip = secondary_ip
2280 node_list = cfg.GetNodeList()
2281 if not self.op.readd and node in node_list:
2282 raise errors.OpPrereqError("Node %s is already in the configuration" %
2284 elif self.op.readd and node not in node_list:
2285 raise errors.OpPrereqError("Node %s is not in the configuration" % node)
2287 for existing_node_name in node_list:
2288 existing_node = cfg.GetNodeInfo(existing_node_name)
2290 if self.op.readd and node == existing_node_name:
2291 if (existing_node.primary_ip != primary_ip or
2292 existing_node.secondary_ip != secondary_ip):
2293 raise errors.OpPrereqError("Readded node doesn't have the same IP"
2294 " address configuration as before")
2297 if (existing_node.primary_ip == primary_ip or
2298 existing_node.secondary_ip == primary_ip or
2299 existing_node.primary_ip == secondary_ip or
2300 existing_node.secondary_ip == secondary_ip):
2301 raise errors.OpPrereqError("New node ip address(es) conflict with"
2302 " existing node %s" % existing_node.name)
2304 # check that the type of the node (single versus dual homed) is the
2305 # same as for the master
2306 myself = cfg.GetNodeInfo(self.cfg.GetMasterNode())
2307 master_singlehomed = myself.secondary_ip == myself.primary_ip
2308 newbie_singlehomed = secondary_ip == primary_ip
2309 if master_singlehomed != newbie_singlehomed:
2310 if master_singlehomed:
2311 raise errors.OpPrereqError("The master has no private ip but the"
2312 " new node has one")
2314 raise errors.OpPrereqError("The master has a private ip but the"
2315 " new node doesn't have one")
2317 # checks reachability
2318 if not utils.TcpPing(primary_ip, constants.DEFAULT_NODED_PORT):
2319 raise errors.OpPrereqError("Node not reachable by ping")
2321 if not newbie_singlehomed:
2322 # check reachability from my secondary ip to newbie's secondary ip
2323 if not utils.TcpPing(secondary_ip, constants.DEFAULT_NODED_PORT,
2324 source=myself.secondary_ip):
2325 raise errors.OpPrereqError("Node secondary ip not reachable by TCP"
2326 " based ping to noded port")
2328 cp_size = self.cfg.GetClusterInfo().candidate_pool_size
2333 mc_now, mc_max = self.cfg.GetMasterCandidateStats(exceptions)
2334 # the new node will increase mc_max with one, so:
2335 mc_max = min(mc_max + 1, cp_size)
2336 self.master_candidate = mc_now < mc_max
2339 self.new_node = self.cfg.GetNodeInfo(node)
2340 assert self.new_node is not None, "Can't retrieve locked node %s" % node
2342 self.new_node = objects.Node(name=node,
2343 primary_ip=primary_ip,
2344 secondary_ip=secondary_ip,
2345 master_candidate=self.master_candidate,
2346 offline=False, drained=False)
2348 def Exec(self, feedback_fn):
2349 """Adds the new node to the cluster.
2352 new_node = self.new_node
2353 node = new_node.name
2355 # for re-adds, reset the offline/drained/master-candidate flags;
2356 # we need to reset here, otherwise offline would prevent RPC calls
2357 # later in the procedure; this also means that if the re-add
2358 # fails, we are left with a non-offlined, broken node
2360 new_node.drained = new_node.offline = False
2361 self.LogInfo("Readding a node, the offline/drained flags were reset")
2362 # if we demote the node, we do cleanup later in the procedure
2363 new_node.master_candidate = self.master_candidate
2365 # notify the user about any possible mc promotion
2366 if new_node.master_candidate:
2367 self.LogInfo("Node will be a master candidate")
2369 # check connectivity
2370 result = self.rpc.call_version([node])[node]
2373 if constants.PROTOCOL_VERSION == result.data:
2374 logging.info("Communication to node %s fine, sw version %s match",
2377 raise errors.OpExecError("Version mismatch master version %s,"
2378 " node version %s" %
2379 (constants.PROTOCOL_VERSION, result.data))
2381 raise errors.OpExecError("Cannot get version from the new node")
2384 logging.info("Copy ssh key to node %s", node)
2385 priv_key, pub_key, _ = ssh.GetUserFiles(constants.GANETI_RUNAS)
2387 keyfiles = [constants.SSH_HOST_DSA_PRIV, constants.SSH_HOST_DSA_PUB,
2388 constants.SSH_HOST_RSA_PRIV, constants.SSH_HOST_RSA_PUB,
2394 keyarray.append(f.read())
2398 result = self.rpc.call_node_add(node, keyarray[0], keyarray[1],
2400 keyarray[3], keyarray[4], keyarray[5])
2402 msg = result.RemoteFailMsg()
2404 raise errors.OpExecError("Cannot transfer ssh keys to the"
2405 " new node: %s" % msg)
2407 # Add node to our /etc/hosts, and add key to known_hosts
2408 if self.cfg.GetClusterInfo().modify_etc_hosts:
2409 utils.AddHostToEtcHosts(new_node.name)
2411 if new_node.secondary_ip != new_node.primary_ip:
2412 result = self.rpc.call_node_has_ip_address(new_node.name,
2413 new_node.secondary_ip)
2414 if result.failed or not result.data:
2415 raise errors.OpExecError("Node claims it doesn't have the secondary ip"
2416 " you gave (%s). Please fix and re-run this"
2417 " command." % new_node.secondary_ip)
2419 node_verify_list = [self.cfg.GetMasterNode()]
2420 node_verify_param = {
2422 # TODO: do a node-net-test as well?
2425 result = self.rpc.call_node_verify(node_verify_list, node_verify_param,
2426 self.cfg.GetClusterName())
2427 for verifier in node_verify_list:
2428 if result[verifier].failed or not result[verifier].data:
2429 raise errors.OpExecError("Cannot communicate with %s's node daemon"
2430 " for remote verification" % verifier)
2431 if result[verifier].data['nodelist']:
2432 for failed in result[verifier].data['nodelist']:
2433 feedback_fn("ssh/hostname verification failed"
2434 " (checking from %s): %s" %
2435 (verifier, result[verifier].data['nodelist'][failed]))
2436 raise errors.OpExecError("ssh/hostname verification failed.")
2438 # Distribute updated /etc/hosts and known_hosts to all nodes,
2439 # including the node just added
2440 myself = self.cfg.GetNodeInfo(self.cfg.GetMasterNode())
2441 dist_nodes = self.cfg.GetNodeList()
2442 if not self.op.readd:
2443 dist_nodes.append(node)
2444 if myself.name in dist_nodes:
2445 dist_nodes.remove(myself.name)
2447 logging.debug("Copying hosts and known_hosts to all nodes")
2448 for fname in (constants.ETC_HOSTS, constants.SSH_KNOWN_HOSTS_FILE):
2449 result = self.rpc.call_upload_file(dist_nodes, fname)
2450 for to_node, to_result in result.iteritems():
2451 if to_result.failed or not to_result.data:
2452 logging.error("Copy of file %s to node %s failed", fname, to_node)
2455 enabled_hypervisors = self.cfg.GetClusterInfo().enabled_hypervisors
2456 if constants.HTS_COPY_VNC_PASSWORD.intersection(enabled_hypervisors):
2457 to_copy.append(constants.VNC_PASSWORD_FILE)
2459 for fname in to_copy:
2460 result = self.rpc.call_upload_file([node], fname)
2461 if result[node].failed or not result[node]:
2462 logging.error("Could not copy file %s to node %s", fname, node)
2465 self.context.ReaddNode(new_node)
2466 # make sure we redistribute the config
2467 self.cfg.Update(new_node)
2468 # and make sure the new node will not have old files around
2469 if not new_node.master_candidate:
2470 result = self.rpc.call_node_demote_from_mc(new_node.name)
2471 msg = result.RemoteFailMsg()
2473 self.LogWarning("Node failed to demote itself from master"
2474 " candidate status: %s" % msg)
2476 self.context.AddNode(new_node)
2479 class LUSetNodeParams(LogicalUnit):
2480 """Modifies the parameters of a node.
2483 HPATH = "node-modify"
2484 HTYPE = constants.HTYPE_NODE
2485 _OP_REQP = ["node_name"]
2488 def CheckArguments(self):
2489 node_name = self.cfg.ExpandNodeName(self.op.node_name)
2490 if node_name is None:
2491 raise errors.OpPrereqError("Invalid node name '%s'" % self.op.node_name)
2492 self.op.node_name = node_name
2493 _CheckBooleanOpField(self.op, 'master_candidate')
2494 _CheckBooleanOpField(self.op, 'offline')
2495 _CheckBooleanOpField(self.op, 'drained')
2496 all_mods = [self.op.offline, self.op.master_candidate, self.op.drained]
2497 if all_mods.count(None) == 3:
2498 raise errors.OpPrereqError("Please pass at least one modification")
2499 if all_mods.count(True) > 1:
2500 raise errors.OpPrereqError("Can't set the node into more than one"
2501 " state at the same time")
2503 def ExpandNames(self):
2504 self.needed_locks = {locking.LEVEL_NODE: self.op.node_name}
2506 def BuildHooksEnv(self):
2509 This runs on the master node.
2513 "OP_TARGET": self.op.node_name,
2514 "MASTER_CANDIDATE": str(self.op.master_candidate),
2515 "OFFLINE": str(self.op.offline),
2516 "DRAINED": str(self.op.drained),
2518 nl = [self.cfg.GetMasterNode(),
2522 def CheckPrereq(self):
2523 """Check prerequisites.
2525 This only checks the instance list against the existing names.
2528 node = self.node = self.cfg.GetNodeInfo(self.op.node_name)
2530 if (self.op.master_candidate is not None or
2531 self.op.drained is not None or
2532 self.op.offline is not None):
2533 # we can't change the master's node flags
2534 if self.op.node_name == self.cfg.GetMasterNode():
2535 raise errors.OpPrereqError("The master role can be changed"
2536 " only via masterfailover")
2538 if ((self.op.master_candidate == False or self.op.offline == True or
2539 self.op.drained == True) and node.master_candidate):
2540 cp_size = self.cfg.GetClusterInfo().candidate_pool_size
2541 num_candidates, _ = self.cfg.GetMasterCandidateStats()
2542 if num_candidates <= cp_size:
2543 msg = ("Not enough master candidates (desired"
2544 " %d, new value will be %d)" % (cp_size, num_candidates-1))
2546 self.LogWarning(msg)
2548 raise errors.OpPrereqError(msg)
2550 if (self.op.master_candidate == True and
2551 ((node.offline and not self.op.offline == False) or
2552 (node.drained and not self.op.drained == False))):
2553 raise errors.OpPrereqError("Node '%s' is offline or drained, can't set"
2554 " to master_candidate" % node.name)
2558 def Exec(self, feedback_fn):
2567 if self.op.offline is not None:
2568 node.offline = self.op.offline
2569 result.append(("offline", str(self.op.offline)))
2570 if self.op.offline == True:
2571 if node.master_candidate:
2572 node.master_candidate = False
2574 result.append(("master_candidate", "auto-demotion due to offline"))
2576 node.drained = False
2577 result.append(("drained", "clear drained status due to offline"))
2579 if self.op.master_candidate is not None:
2580 node.master_candidate = self.op.master_candidate
2582 result.append(("master_candidate", str(self.op.master_candidate)))
2583 if self.op.master_candidate == False:
2584 rrc = self.rpc.call_node_demote_from_mc(node.name)
2585 msg = rrc.RemoteFailMsg()
2587 self.LogWarning("Node failed to demote itself: %s" % msg)
2589 if self.op.drained is not None:
2590 node.drained = self.op.drained
2591 result.append(("drained", str(self.op.drained)))
2592 if self.op.drained == True:
2593 if node.master_candidate:
2594 node.master_candidate = False
2596 result.append(("master_candidate", "auto-demotion due to drain"))
2597 rrc = self.rpc.call_node_demote_from_mc(node.name)
2598 msg = rrc.RemoteFailMsg()
2600 self.LogWarning("Node failed to demote itself: %s" % msg)
2602 node.offline = False
2603 result.append(("offline", "clear offline status due to drain"))
2605 # this will trigger configuration file update, if needed
2606 self.cfg.Update(node)
2607 # this will trigger job queue propagation or cleanup
2609 self.context.ReaddNode(node)
2614 class LUQueryClusterInfo(NoHooksLU):
2615 """Query cluster configuration.
2621 def ExpandNames(self):
2622 self.needed_locks = {}
2624 def CheckPrereq(self):
2625 """No prerequsites needed for this LU.
2630 def Exec(self, feedback_fn):
2631 """Return cluster config.
2634 cluster = self.cfg.GetClusterInfo()
2636 "software_version": constants.RELEASE_VERSION,
2637 "protocol_version": constants.PROTOCOL_VERSION,
2638 "config_version": constants.CONFIG_VERSION,
2639 "os_api_version": constants.OS_API_VERSION,
2640 "export_version": constants.EXPORT_VERSION,
2641 "architecture": (platform.architecture()[0], platform.machine()),
2642 "name": cluster.cluster_name,
2643 "master": cluster.master_node,
2644 "default_hypervisor": cluster.default_hypervisor,
2645 "enabled_hypervisors": cluster.enabled_hypervisors,
2646 "hvparams": dict([(hypervisor_name, cluster.hvparams[hypervisor_name])
2647 for hypervisor_name in cluster.enabled_hypervisors]),
2648 "beparams": cluster.beparams,
2649 "candidate_pool_size": cluster.candidate_pool_size,
2650 "default_bridge": cluster.default_bridge,
2651 "master_netdev": cluster.master_netdev,
2652 "volume_group_name": cluster.volume_group_name,
2653 "file_storage_dir": cluster.file_storage_dir,
2654 "tags": list(cluster.GetTags()),
2660 class LUQueryConfigValues(NoHooksLU):
2661 """Return configuration values.
2666 _FIELDS_DYNAMIC = utils.FieldSet()
2667 _FIELDS_STATIC = utils.FieldSet("cluster_name", "master_node", "drain_flag")
2669 def ExpandNames(self):
2670 self.needed_locks = {}
2672 _CheckOutputFields(static=self._FIELDS_STATIC,
2673 dynamic=self._FIELDS_DYNAMIC,
2674 selected=self.op.output_fields)
2676 def CheckPrereq(self):
2677 """No prerequisites.
2682 def Exec(self, feedback_fn):
2683 """Dump a representation of the cluster config to the standard output.
2687 for field in self.op.output_fields:
2688 if field == "cluster_name":
2689 entry = self.cfg.GetClusterName()
2690 elif field == "master_node":
2691 entry = self.cfg.GetMasterNode()
2692 elif field == "drain_flag":
2693 entry = os.path.exists(constants.JOB_QUEUE_DRAIN_FILE)
2695 raise errors.ParameterError(field)
2696 values.append(entry)
2700 class LUActivateInstanceDisks(NoHooksLU):
2701 """Bring up an instance's disks.
2704 _OP_REQP = ["instance_name"]
2707 def ExpandNames(self):
2708 self._ExpandAndLockInstance()
2709 self.needed_locks[locking.LEVEL_NODE] = []
2710 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
2712 def DeclareLocks(self, level):
2713 if level == locking.LEVEL_NODE:
2714 self._LockInstancesNodes()
2716 def CheckPrereq(self):
2717 """Check prerequisites.
2719 This checks that the instance is in the cluster.
2722 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2723 assert self.instance is not None, \
2724 "Cannot retrieve locked instance %s" % self.op.instance_name
2725 _CheckNodeOnline(self, self.instance.primary_node)
2726 if not hasattr(self.op, "ignore_size"):
2727 self.op.ignore_size = False
2729 def Exec(self, feedback_fn):
2730 """Activate the disks.
2733 disks_ok, disks_info = \
2734 _AssembleInstanceDisks(self, self.instance,
2735 ignore_size=self.op.ignore_size)
2737 raise errors.OpExecError("Cannot activate block devices")
2742 def _AssembleInstanceDisks(lu, instance, ignore_secondaries=False,
2744 """Prepare the block devices for an instance.
2746 This sets up the block devices on all nodes.
2748 @type lu: L{LogicalUnit}
2749 @param lu: the logical unit on whose behalf we execute
2750 @type instance: L{objects.Instance}
2751 @param instance: the instance for whose disks we assemble
2752 @type ignore_secondaries: boolean
2753 @param ignore_secondaries: if true, errors on secondary nodes
2754 won't result in an error return from the function
2755 @type ignore_size: boolean
2756 @param ignore_size: if true, the current known size of the disk
2757 will not be used during the disk activation, useful for cases
2758 when the size is wrong
2759 @return: False if the operation failed, otherwise a list of
2760 (host, instance_visible_name, node_visible_name)
2761 with the mapping from node devices to instance devices
2766 iname = instance.name
2767 # With the two passes mechanism we try to reduce the window of
2768 # opportunity for the race condition of switching DRBD to primary
2769 # before handshaking occured, but we do not eliminate it
2771 # The proper fix would be to wait (with some limits) until the
2772 # connection has been made and drbd transitions from WFConnection
2773 # into any other network-connected state (Connected, SyncTarget,
2776 # 1st pass, assemble on all nodes in secondary mode
2777 for inst_disk in instance.disks:
2778 for node, node_disk in inst_disk.ComputeNodeTree(instance.primary_node):
2780 node_disk = node_disk.Copy()
2781 node_disk.UnsetSize()
2782 lu.cfg.SetDiskID(node_disk, node)
2783 result = lu.rpc.call_blockdev_assemble(node, node_disk, iname, False)
2784 msg = result.RemoteFailMsg()
2786 lu.proc.LogWarning("Could not prepare block device %s on node %s"
2787 " (is_primary=False, pass=1): %s",
2788 inst_disk.iv_name, node, msg)
2789 if not ignore_secondaries:
2792 # FIXME: race condition on drbd migration to primary
2794 # 2nd pass, do only the primary node
2795 for inst_disk in instance.disks:
2796 for node, node_disk in inst_disk.ComputeNodeTree(instance.primary_node):
2797 if node != instance.primary_node:
2800 node_disk = node_disk.Copy()
2801 node_disk.UnsetSize()
2802 lu.cfg.SetDiskID(node_disk, node)
2803 result = lu.rpc.call_blockdev_assemble(node, node_disk, iname, True)
2804 msg = result.RemoteFailMsg()
2806 lu.proc.LogWarning("Could not prepare block device %s on node %s"
2807 " (is_primary=True, pass=2): %s",
2808 inst_disk.iv_name, node, msg)
2810 device_info.append((instance.primary_node, inst_disk.iv_name,
2813 # leave the disks configured for the primary node
2814 # this is a workaround that would be fixed better by
2815 # improving the logical/physical id handling
2816 for disk in instance.disks:
2817 lu.cfg.SetDiskID(disk, instance.primary_node)
2819 return disks_ok, device_info
2822 def _StartInstanceDisks(lu, instance, force):
2823 """Start the disks of an instance.
2826 disks_ok, _ = _AssembleInstanceDisks(lu, instance,
2827 ignore_secondaries=force)
2829 _ShutdownInstanceDisks(lu, instance)
2830 if force is not None and not force:
2831 lu.proc.LogWarning("", hint="If the message above refers to a"
2833 " you can retry the operation using '--force'.")
2834 raise errors.OpExecError("Disk consistency error")
2837 class LUDeactivateInstanceDisks(NoHooksLU):
2838 """Shutdown an instance's disks.
2841 _OP_REQP = ["instance_name"]
2844 def ExpandNames(self):
2845 self._ExpandAndLockInstance()
2846 self.needed_locks[locking.LEVEL_NODE] = []
2847 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
2849 def DeclareLocks(self, level):
2850 if level == locking.LEVEL_NODE:
2851 self._LockInstancesNodes()
2853 def CheckPrereq(self):
2854 """Check prerequisites.
2856 This checks that the instance is in the cluster.
2859 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2860 assert self.instance is not None, \
2861 "Cannot retrieve locked instance %s" % self.op.instance_name
2863 def Exec(self, feedback_fn):
2864 """Deactivate the disks
2867 instance = self.instance
2868 _SafeShutdownInstanceDisks(self, instance)
2871 def _SafeShutdownInstanceDisks(lu, instance):
2872 """Shutdown block devices of an instance.
2874 This function checks if an instance is running, before calling
2875 _ShutdownInstanceDisks.
2878 ins_l = lu.rpc.call_instance_list([instance.primary_node],
2879 [instance.hypervisor])
2880 ins_l = ins_l[instance.primary_node]
2881 if ins_l.failed or not isinstance(ins_l.data, list):
2882 raise errors.OpExecError("Can't contact node '%s'" %
2883 instance.primary_node)
2885 if instance.name in ins_l.data:
2886 raise errors.OpExecError("Instance is running, can't shutdown"
2889 _ShutdownInstanceDisks(lu, instance)
2892 def _ShutdownInstanceDisks(lu, instance, ignore_primary=False):
2893 """Shutdown block devices of an instance.
2895 This does the shutdown on all nodes of the instance.
2897 If the ignore_primary is false, errors on the primary node are
2902 for disk in instance.disks:
2903 for node, top_disk in disk.ComputeNodeTree(instance.primary_node):
2904 lu.cfg.SetDiskID(top_disk, node)
2905 result = lu.rpc.call_blockdev_shutdown(node, top_disk)
2906 msg = result.RemoteFailMsg()
2908 lu.LogWarning("Could not shutdown block device %s on node %s: %s",
2909 disk.iv_name, node, msg)
2910 if not ignore_primary or node != instance.primary_node:
2915 def _CheckNodeFreeMemory(lu, node, reason, requested, hypervisor_name):
2916 """Checks if a node has enough free memory.
2918 This function check if a given node has the needed amount of free
2919 memory. In case the node has less memory or we cannot get the
2920 information from the node, this function raise an OpPrereqError
2923 @type lu: C{LogicalUnit}
2924 @param lu: a logical unit from which we get configuration data
2926 @param node: the node to check
2927 @type reason: C{str}
2928 @param reason: string to use in the error message
2929 @type requested: C{int}
2930 @param requested: the amount of memory in MiB to check for
2931 @type hypervisor_name: C{str}
2932 @param hypervisor_name: the hypervisor to ask for memory stats
2933 @raise errors.OpPrereqError: if the node doesn't have enough memory, or
2934 we cannot check the node
2937 nodeinfo = lu.rpc.call_node_info([node], lu.cfg.GetVGName(), hypervisor_name)
2938 nodeinfo[node].Raise()
2939 free_mem = nodeinfo[node].data.get('memory_free')
2940 if not isinstance(free_mem, int):
2941 raise errors.OpPrereqError("Can't compute free memory on node %s, result"
2942 " was '%s'" % (node, free_mem))
2943 if requested > free_mem:
2944 raise errors.OpPrereqError("Not enough memory on node %s for %s:"
2945 " needed %s MiB, available %s MiB" %
2946 (node, reason, requested, free_mem))
2949 class LUStartupInstance(LogicalUnit):
2950 """Starts an instance.
2953 HPATH = "instance-start"
2954 HTYPE = constants.HTYPE_INSTANCE
2955 _OP_REQP = ["instance_name", "force"]
2958 def ExpandNames(self):
2959 self._ExpandAndLockInstance()
2961 def BuildHooksEnv(self):
2964 This runs on master, primary and secondary nodes of the instance.
2968 "FORCE": self.op.force,
2970 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
2971 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
2974 def CheckPrereq(self):
2975 """Check prerequisites.
2977 This checks that the instance is in the cluster.
2980 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2981 assert self.instance is not None, \
2982 "Cannot retrieve locked instance %s" % self.op.instance_name
2985 self.beparams = getattr(self.op, "beparams", {})
2987 if not isinstance(self.beparams, dict):
2988 raise errors.OpPrereqError("Invalid beparams passed: %s, expected"
2989 " dict" % (type(self.beparams), ))
2990 # fill the beparams dict
2991 utils.ForceDictType(self.beparams, constants.BES_PARAMETER_TYPES)
2992 self.op.beparams = self.beparams
2995 self.hvparams = getattr(self.op, "hvparams", {})
2997 if not isinstance(self.hvparams, dict):
2998 raise errors.OpPrereqError("Invalid hvparams passed: %s, expected"
2999 " dict" % (type(self.hvparams), ))
3001 # check hypervisor parameter syntax (locally)
3002 cluster = self.cfg.GetClusterInfo()
3003 utils.ForceDictType(self.hvparams, constants.HVS_PARAMETER_TYPES)
3004 filled_hvp = cluster.FillDict(cluster.hvparams[instance.hypervisor],
3006 filled_hvp.update(self.hvparams)
3007 hv_type = hypervisor.GetHypervisor(instance.hypervisor)
3008 hv_type.CheckParameterSyntax(filled_hvp)
3009 _CheckHVParams(self, instance.all_nodes, instance.hypervisor, filled_hvp)
3010 self.op.hvparams = self.hvparams
3012 _CheckNodeOnline(self, instance.primary_node)
3014 bep = self.cfg.GetClusterInfo().FillBE(instance)
3015 # check bridges existence
3016 _CheckInstanceBridgesExist(self, instance)
3018 remote_info = self.rpc.call_instance_info(instance.primary_node,
3020 instance.hypervisor)
3022 if not remote_info.data:
3023 _CheckNodeFreeMemory(self, instance.primary_node,
3024 "starting instance %s" % instance.name,
3025 bep[constants.BE_MEMORY], instance.hypervisor)
3027 def Exec(self, feedback_fn):
3028 """Start the instance.
3031 instance = self.instance
3032 force = self.op.force
3034 self.cfg.MarkInstanceUp(instance.name)
3036 node_current = instance.primary_node
3038 _StartInstanceDisks(self, instance, force)
3040 result = self.rpc.call_instance_start(node_current, instance,
3041 self.hvparams, self.beparams)
3042 msg = result.RemoteFailMsg()
3044 _ShutdownInstanceDisks(self, instance)
3045 raise errors.OpExecError("Could not start instance: %s" % msg)
3048 class LURebootInstance(LogicalUnit):
3049 """Reboot an instance.
3052 HPATH = "instance-reboot"
3053 HTYPE = constants.HTYPE_INSTANCE
3054 _OP_REQP = ["instance_name", "ignore_secondaries", "reboot_type"]
3057 def ExpandNames(self):
3058 if self.op.reboot_type not in [constants.INSTANCE_REBOOT_SOFT,
3059 constants.INSTANCE_REBOOT_HARD,
3060 constants.INSTANCE_REBOOT_FULL]:
3061 raise errors.ParameterError("reboot type not in [%s, %s, %s]" %
3062 (constants.INSTANCE_REBOOT_SOFT,
3063 constants.INSTANCE_REBOOT_HARD,
3064 constants.INSTANCE_REBOOT_FULL))
3065 self._ExpandAndLockInstance()
3067 def BuildHooksEnv(self):
3070 This runs on master, primary and secondary nodes of the instance.
3074 "IGNORE_SECONDARIES": self.op.ignore_secondaries,
3075 "REBOOT_TYPE": self.op.reboot_type,
3077 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
3078 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
3081 def CheckPrereq(self):
3082 """Check prerequisites.
3084 This checks that the instance is in the cluster.
3087 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3088 assert self.instance is not None, \
3089 "Cannot retrieve locked instance %s" % self.op.instance_name
3091 _CheckNodeOnline(self, instance.primary_node)
3093 # check bridges existence
3094 _CheckInstanceBridgesExist(self, instance)
3096 def Exec(self, feedback_fn):
3097 """Reboot the instance.
3100 instance = self.instance
3101 ignore_secondaries = self.op.ignore_secondaries
3102 reboot_type = self.op.reboot_type
3104 node_current = instance.primary_node
3106 if reboot_type in [constants.INSTANCE_REBOOT_SOFT,
3107 constants.INSTANCE_REBOOT_HARD]:
3108 for disk in instance.disks:
3109 self.cfg.SetDiskID(disk, node_current)
3110 result = self.rpc.call_instance_reboot(node_current, instance,
3112 msg = result.RemoteFailMsg()
3114 raise errors.OpExecError("Could not reboot instance: %s" % msg)
3116 result = self.rpc.call_instance_shutdown(node_current, instance)
3117 msg = result.RemoteFailMsg()
3119 raise errors.OpExecError("Could not shutdown instance for"
3120 " full reboot: %s" % msg)
3121 _ShutdownInstanceDisks(self, instance)
3122 _StartInstanceDisks(self, instance, ignore_secondaries)
3123 result = self.rpc.call_instance_start(node_current, instance, None, None)
3124 msg = result.RemoteFailMsg()
3126 _ShutdownInstanceDisks(self, instance)
3127 raise errors.OpExecError("Could not start instance for"
3128 " full reboot: %s" % msg)
3130 self.cfg.MarkInstanceUp(instance.name)
3133 class LUShutdownInstance(LogicalUnit):
3134 """Shutdown an instance.
3137 HPATH = "instance-stop"
3138 HTYPE = constants.HTYPE_INSTANCE
3139 _OP_REQP = ["instance_name"]
3142 def ExpandNames(self):
3143 self._ExpandAndLockInstance()
3145 def BuildHooksEnv(self):
3148 This runs on master, primary and secondary nodes of the instance.
3151 env = _BuildInstanceHookEnvByObject(self, self.instance)
3152 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
3155 def CheckPrereq(self):
3156 """Check prerequisites.
3158 This checks that the instance is in the cluster.
3161 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3162 assert self.instance is not None, \
3163 "Cannot retrieve locked instance %s" % self.op.instance_name
3164 _CheckNodeOnline(self, self.instance.primary_node)
3166 def Exec(self, feedback_fn):
3167 """Shutdown the instance.
3170 instance = self.instance
3171 node_current = instance.primary_node
3172 self.cfg.MarkInstanceDown(instance.name)
3173 result = self.rpc.call_instance_shutdown(node_current, instance)
3174 msg = result.RemoteFailMsg()
3176 self.proc.LogWarning("Could not shutdown instance: %s" % msg)
3178 _ShutdownInstanceDisks(self, instance)
3181 class LUReinstallInstance(LogicalUnit):
3182 """Reinstall an instance.
3185 HPATH = "instance-reinstall"
3186 HTYPE = constants.HTYPE_INSTANCE
3187 _OP_REQP = ["instance_name"]
3190 def ExpandNames(self):
3191 self._ExpandAndLockInstance()
3193 def BuildHooksEnv(self):
3196 This runs on master, primary and secondary nodes of the instance.
3199 env = _BuildInstanceHookEnvByObject(self, self.instance)
3200 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
3203 def CheckPrereq(self):
3204 """Check prerequisites.
3206 This checks that the instance is in the cluster and is not running.
3209 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3210 assert instance is not None, \
3211 "Cannot retrieve locked instance %s" % self.op.instance_name
3212 _CheckNodeOnline(self, instance.primary_node)
3214 if instance.disk_template == constants.DT_DISKLESS:
3215 raise errors.OpPrereqError("Instance '%s' has no disks" %
3216 self.op.instance_name)
3217 if instance.admin_up:
3218 raise errors.OpPrereqError("Instance '%s' is marked to be up" %
3219 self.op.instance_name)
3220 remote_info = self.rpc.call_instance_info(instance.primary_node,
3222 instance.hypervisor)
3224 if remote_info.data:
3225 raise errors.OpPrereqError("Instance '%s' is running on the node %s" %
3226 (self.op.instance_name,
3227 instance.primary_node))
3229 self.op.os_type = getattr(self.op, "os_type", None)
3230 if self.op.os_type is not None:
3232 pnode = self.cfg.GetNodeInfo(
3233 self.cfg.ExpandNodeName(instance.primary_node))
3235 raise errors.OpPrereqError("Primary node '%s' is unknown" %
3237 result = self.rpc.call_os_get(pnode.name, self.op.os_type)
3239 if not isinstance(result.data, objects.OS):
3240 raise errors.OpPrereqError("OS '%s' not in supported OS list for"
3241 " primary node" % self.op.os_type)
3243 self.instance = instance
3245 def Exec(self, feedback_fn):
3246 """Reinstall the instance.
3249 inst = self.instance
3251 if self.op.os_type is not None:
3252 feedback_fn("Changing OS to '%s'..." % self.op.os_type)
3253 inst.os = self.op.os_type
3254 self.cfg.Update(inst)
3256 _StartInstanceDisks(self, inst, None)
3258 feedback_fn("Running the instance OS create scripts...")
3259 result = self.rpc.call_instance_os_add(inst.primary_node, inst)
3260 msg = result.RemoteFailMsg()
3262 raise errors.OpExecError("Could not install OS for instance %s"
3264 (inst.name, inst.primary_node, msg))
3266 _ShutdownInstanceDisks(self, inst)
3269 class LURenameInstance(LogicalUnit):
3270 """Rename an instance.
3273 HPATH = "instance-rename"
3274 HTYPE = constants.HTYPE_INSTANCE
3275 _OP_REQP = ["instance_name", "new_name"]
3277 def BuildHooksEnv(self):
3280 This runs on master, primary and secondary nodes of the instance.
3283 env = _BuildInstanceHookEnvByObject(self, self.instance)
3284 env["INSTANCE_NEW_NAME"] = self.op.new_name
3285 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
3288 def CheckPrereq(self):
3289 """Check prerequisites.
3291 This checks that the instance is in the cluster and is not running.
3294 instance = self.cfg.GetInstanceInfo(
3295 self.cfg.ExpandInstanceName(self.op.instance_name))
3296 if instance is None:
3297 raise errors.OpPrereqError("Instance '%s' not known" %
3298 self.op.instance_name)
3299 _CheckNodeOnline(self, instance.primary_node)
3301 if instance.admin_up:
3302 raise errors.OpPrereqError("Instance '%s' is marked to be up" %
3303 self.op.instance_name)
3304 remote_info = self.rpc.call_instance_info(instance.primary_node,
3306 instance.hypervisor)
3308 if remote_info.data:
3309 raise errors.OpPrereqError("Instance '%s' is running on the node %s" %
3310 (self.op.instance_name,
3311 instance.primary_node))
3312 self.instance = instance
3314 # new name verification
3315 name_info = utils.HostInfo(self.op.new_name)
3317 self.op.new_name = new_name = name_info.name
3318 instance_list = self.cfg.GetInstanceList()
3319 if new_name in instance_list:
3320 raise errors.OpPrereqError("Instance '%s' is already in the cluster" %
3323 if not getattr(self.op, "ignore_ip", False):
3324 if utils.TcpPing(name_info.ip, constants.DEFAULT_NODED_PORT):
3325 raise errors.OpPrereqError("IP %s of instance %s already in use" %
3326 (name_info.ip, new_name))
3329 def Exec(self, feedback_fn):
3330 """Reinstall the instance.
3333 inst = self.instance
3334 old_name = inst.name
3336 if inst.disk_template == constants.DT_FILE:
3337 old_file_storage_dir = os.path.dirname(inst.disks[0].logical_id[1])
3339 self.cfg.RenameInstance(inst.name, self.op.new_name)
3340 # Change the instance lock. This is definitely safe while we hold the BGL
3341 self.context.glm.remove(locking.LEVEL_INSTANCE, old_name)
3342 self.context.glm.add(locking.LEVEL_INSTANCE, self.op.new_name)
3344 # re-read the instance from the configuration after rename
3345 inst = self.cfg.GetInstanceInfo(self.op.new_name)
3347 if inst.disk_template == constants.DT_FILE:
3348 new_file_storage_dir = os.path.dirname(inst.disks[0].logical_id[1])
3349 result = self.rpc.call_file_storage_dir_rename(inst.primary_node,
3350 old_file_storage_dir,
3351 new_file_storage_dir)
3354 raise errors.OpExecError("Could not connect to node '%s' to rename"
3355 " directory '%s' to '%s' (but the instance"
3356 " has been renamed in Ganeti)" % (
3357 inst.primary_node, old_file_storage_dir,
3358 new_file_storage_dir))
3360 if not result.data[0]:
3361 raise errors.OpExecError("Could not rename directory '%s' to '%s'"
3362 " (but the instance has been renamed in"
3363 " Ganeti)" % (old_file_storage_dir,
3364 new_file_storage_dir))
3366 _StartInstanceDisks(self, inst, None)
3368 result = self.rpc.call_instance_run_rename(inst.primary_node, inst,
3370 msg = result.RemoteFailMsg()
3372 msg = ("Could not run OS rename script for instance %s on node %s"
3373 " (but the instance has been renamed in Ganeti): %s" %
3374 (inst.name, inst.primary_node, msg))
3375 self.proc.LogWarning(msg)
3377 _ShutdownInstanceDisks(self, inst)
3380 class LURemoveInstance(LogicalUnit):
3381 """Remove an instance.
3384 HPATH = "instance-remove"
3385 HTYPE = constants.HTYPE_INSTANCE
3386 _OP_REQP = ["instance_name", "ignore_failures"]
3389 def ExpandNames(self):
3390 self._ExpandAndLockInstance()
3391 self.needed_locks[locking.LEVEL_NODE] = []
3392 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3394 def DeclareLocks(self, level):
3395 if level == locking.LEVEL_NODE:
3396 self._LockInstancesNodes()
3398 def BuildHooksEnv(self):
3401 This runs on master, primary and secondary nodes of the instance.
3404 env = _BuildInstanceHookEnvByObject(self, self.instance)
3405 nl = [self.cfg.GetMasterNode()]
3408 def CheckPrereq(self):
3409 """Check prerequisites.
3411 This checks that the instance is in the cluster.
3414 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3415 assert self.instance is not None, \
3416 "Cannot retrieve locked instance %s" % self.op.instance_name
3418 def Exec(self, feedback_fn):
3419 """Remove the instance.
3422 instance = self.instance
3423 logging.info("Shutting down instance %s on node %s",
3424 instance.name, instance.primary_node)
3426 result = self.rpc.call_instance_shutdown(instance.primary_node, instance)
3427 msg = result.RemoteFailMsg()
3429 if self.op.ignore_failures:
3430 feedback_fn("Warning: can't shutdown instance: %s" % msg)
3432 raise errors.OpExecError("Could not shutdown instance %s on"
3434 (instance.name, instance.primary_node, msg))
3436 logging.info("Removing block devices for instance %s", instance.name)
3438 if not _RemoveDisks(self, instance):
3439 if self.op.ignore_failures:
3440 feedback_fn("Warning: can't remove instance's disks")
3442 raise errors.OpExecError("Can't remove instance's disks")
3444 logging.info("Removing instance %s out of cluster config", instance.name)
3446 self.cfg.RemoveInstance(instance.name)
3447 self.remove_locks[locking.LEVEL_INSTANCE] = instance.name
3450 class LUQueryInstances(NoHooksLU):
3451 """Logical unit for querying instances.
3454 _OP_REQP = ["output_fields", "names", "use_locking"]
3456 _FIELDS_STATIC = utils.FieldSet(*["name", "os", "pnode", "snodes",
3458 "disk_template", "ip", "mac", "bridge",
3459 "sda_size", "sdb_size", "vcpus", "tags",
3460 "network_port", "beparams",
3461 r"(disk)\.(size)/([0-9]+)",
3462 r"(disk)\.(sizes)", "disk_usage",
3463 r"(nic)\.(mac|ip|bridge)/([0-9]+)",
3464 r"(nic)\.(macs|ips|bridges)",
3465 r"(disk|nic)\.(count)",
3466 "serial_no", "hypervisor", "hvparams",] +
3468 for name in constants.HVS_PARAMETERS] +
3470 for name in constants.BES_PARAMETERS])
3471 _FIELDS_DYNAMIC = utils.FieldSet("oper_state", "oper_ram", "status")
3474 def ExpandNames(self):
3475 _CheckOutputFields(static=self._FIELDS_STATIC,
3476 dynamic=self._FIELDS_DYNAMIC,
3477 selected=self.op.output_fields)
3479 self.needed_locks = {}
3480 self.share_locks[locking.LEVEL_INSTANCE] = 1
3481 self.share_locks[locking.LEVEL_NODE] = 1
3484 self.wanted = _GetWantedInstances(self, self.op.names)
3486 self.wanted = locking.ALL_SET
3488 self.do_node_query = self._FIELDS_STATIC.NonMatching(self.op.output_fields)
3489 self.do_locking = self.do_node_query and self.op.use_locking
3491 self.needed_locks[locking.LEVEL_INSTANCE] = self.wanted
3492 self.needed_locks[locking.LEVEL_NODE] = []
3493 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3495 def DeclareLocks(self, level):
3496 if level == locking.LEVEL_NODE and self.do_locking:
3497 self._LockInstancesNodes()
3499 def CheckPrereq(self):
3500 """Check prerequisites.
3505 def Exec(self, feedback_fn):
3506 """Computes the list of nodes and their attributes.
3509 all_info = self.cfg.GetAllInstancesInfo()
3510 if self.wanted == locking.ALL_SET:
3511 # caller didn't specify instance names, so ordering is not important
3513 instance_names = self.acquired_locks[locking.LEVEL_INSTANCE]
3515 instance_names = all_info.keys()
3516 instance_names = utils.NiceSort(instance_names)
3518 # caller did specify names, so we must keep the ordering
3520 tgt_set = self.acquired_locks[locking.LEVEL_INSTANCE]
3522 tgt_set = all_info.keys()
3523 missing = set(self.wanted).difference(tgt_set)
3525 raise errors.OpExecError("Some instances were removed before"
3526 " retrieving their data: %s" % missing)
3527 instance_names = self.wanted
3529 instance_list = [all_info[iname] for iname in instance_names]
3531 # begin data gathering
3533 nodes = frozenset([inst.primary_node for inst in instance_list])
3534 hv_list = list(set([inst.hypervisor for inst in instance_list]))
3538 if self.do_node_query:
3540 node_data = self.rpc.call_all_instances_info(nodes, hv_list)
3542 result = node_data[name]
3544 # offline nodes will be in both lists
3545 off_nodes.append(name)
3547 bad_nodes.append(name)
3550 live_data.update(result.data)
3551 # else no instance is alive
3553 live_data = dict([(name, {}) for name in instance_names])
3555 # end data gathering
3560 for instance in instance_list:
3562 i_hv = self.cfg.GetClusterInfo().FillHV(instance)
3563 i_be = self.cfg.GetClusterInfo().FillBE(instance)
3564 for field in self.op.output_fields:
3565 st_match = self._FIELDS_STATIC.Matches(field)
3570 elif field == "pnode":
3571 val = instance.primary_node
3572 elif field == "snodes":
3573 val = list(instance.secondary_nodes)
3574 elif field == "admin_state":
3575 val = instance.admin_up
3576 elif field == "oper_state":
3577 if instance.primary_node in bad_nodes:
3580 val = bool(live_data.get(instance.name))
3581 elif field == "status":
3582 if instance.primary_node in off_nodes:
3583 val = "ERROR_nodeoffline"
3584 elif instance.primary_node in bad_nodes:
3585 val = "ERROR_nodedown"
3587 running = bool(live_data.get(instance.name))
3589 if instance.admin_up:
3594 if instance.admin_up:
3598 elif field == "oper_ram":
3599 if instance.primary_node in bad_nodes:
3601 elif instance.name in live_data:
3602 val = live_data[instance.name].get("memory", "?")
3605 elif field == "vcpus":
3606 val = i_be[constants.BE_VCPUS]
3607 elif field == "disk_template":
3608 val = instance.disk_template
3611 val = instance.nics[0].ip
3614 elif field == "bridge":
3616 val = instance.nics[0].bridge
3619 elif field == "mac":
3621 val = instance.nics[0].mac
3624 elif field == "sda_size" or field == "sdb_size":
3625 idx = ord(field[2]) - ord('a')
3627 val = instance.FindDisk(idx).size
3628 except errors.OpPrereqError:
3630 elif field == "disk_usage": # total disk usage per node
3631 disk_sizes = [{'size': disk.size} for disk in instance.disks]
3632 val = _ComputeDiskSize(instance.disk_template, disk_sizes)
3633 elif field == "tags":
3634 val = list(instance.GetTags())
3635 elif field == "serial_no":
3636 val = instance.serial_no
3637 elif field == "network_port":
3638 val = instance.network_port
3639 elif field == "hypervisor":
3640 val = instance.hypervisor
3641 elif field == "hvparams":
3643 elif (field.startswith(HVPREFIX) and
3644 field[len(HVPREFIX):] in constants.HVS_PARAMETERS):
3645 val = i_hv.get(field[len(HVPREFIX):], None)
3646 elif field == "beparams":
3648 elif (field.startswith(BEPREFIX) and
3649 field[len(BEPREFIX):] in constants.BES_PARAMETERS):
3650 val = i_be.get(field[len(BEPREFIX):], None)
3651 elif st_match and st_match.groups():
3652 # matches a variable list
3653 st_groups = st_match.groups()
3654 if st_groups and st_groups[0] == "disk":
3655 if st_groups[1] == "count":
3656 val = len(instance.disks)
3657 elif st_groups[1] == "sizes":
3658 val = [disk.size for disk in instance.disks]
3659 elif st_groups[1] == "size":
3661 val = instance.FindDisk(st_groups[2]).size
3662 except errors.OpPrereqError:
3665 assert False, "Unhandled disk parameter"
3666 elif st_groups[0] == "nic":
3667 if st_groups[1] == "count":
3668 val = len(instance.nics)
3669 elif st_groups[1] == "macs":
3670 val = [nic.mac for nic in instance.nics]
3671 elif st_groups[1] == "ips":
3672 val = [nic.ip for nic in instance.nics]
3673 elif st_groups[1] == "bridges":
3674 val = [nic.bridge for nic in instance.nics]
3677 nic_idx = int(st_groups[2])
3678 if nic_idx >= len(instance.nics):
3681 if st_groups[1] == "mac":
3682 val = instance.nics[nic_idx].mac
3683 elif st_groups[1] == "ip":
3684 val = instance.nics[nic_idx].ip
3685 elif st_groups[1] == "bridge":
3686 val = instance.nics[nic_idx].bridge
3688 assert False, "Unhandled NIC parameter"
3690 assert False, ("Declared but unhandled variable parameter '%s'" %
3693 assert False, "Declared but unhandled parameter '%s'" % field
3700 class LUFailoverInstance(LogicalUnit):
3701 """Failover an instance.
3704 HPATH = "instance-failover"
3705 HTYPE = constants.HTYPE_INSTANCE
3706 _OP_REQP = ["instance_name", "ignore_consistency"]
3709 def ExpandNames(self):
3710 self._ExpandAndLockInstance()
3711 self.needed_locks[locking.LEVEL_NODE] = []
3712 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3714 def DeclareLocks(self, level):
3715 if level == locking.LEVEL_NODE:
3716 self._LockInstancesNodes()
3718 def BuildHooksEnv(self):
3721 This runs on master, primary and secondary nodes of the instance.
3725 "IGNORE_CONSISTENCY": self.op.ignore_consistency,
3727 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
3728 nl = [self.cfg.GetMasterNode()] + list(self.instance.secondary_nodes)
3731 def CheckPrereq(self):
3732 """Check prerequisites.
3734 This checks that the instance is in the cluster.
3737 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3738 assert self.instance is not None, \
3739 "Cannot retrieve locked instance %s" % self.op.instance_name
3741 bep = self.cfg.GetClusterInfo().FillBE(instance)
3742 if instance.disk_template not in constants.DTS_NET_MIRROR:
3743 raise errors.OpPrereqError("Instance's disk layout is not"
3744 " network mirrored, cannot failover.")
3746 secondary_nodes = instance.secondary_nodes
3747 if not secondary_nodes:
3748 raise errors.ProgrammerError("no secondary node but using "
3749 "a mirrored disk template")
3751 target_node = secondary_nodes[0]
3752 _CheckNodeOnline(self, target_node)
3753 _CheckNodeNotDrained(self, target_node)
3755 if instance.admin_up:
3756 # check memory requirements on the secondary node
3757 _CheckNodeFreeMemory(self, target_node, "failing over instance %s" %
3758 instance.name, bep[constants.BE_MEMORY],
3759 instance.hypervisor)
3761 self.LogInfo("Not checking memory on the secondary node as"
3762 " instance will not be started")
3764 # check bridge existence
3765 brlist = [nic.bridge for nic in instance.nics]
3766 result = self.rpc.call_bridges_exist(target_node, brlist)
3769 raise errors.OpPrereqError("One or more target bridges %s does not"
3770 " exist on destination node '%s'" %
3771 (brlist, target_node))
3773 def Exec(self, feedback_fn):
3774 """Failover an instance.
3776 The failover is done by shutting it down on its present node and
3777 starting it on the secondary.
3780 instance = self.instance
3782 source_node = instance.primary_node
3783 target_node = instance.secondary_nodes[0]
3785 feedback_fn("* checking disk consistency between source and target")
3786 for dev in instance.disks:
3787 # for drbd, these are drbd over lvm
3788 if not _CheckDiskConsistency(self, dev, target_node, False):
3789 if instance.admin_up and not self.op.ignore_consistency:
3790 raise errors.OpExecError("Disk %s is degraded on target node,"
3791 " aborting failover." % dev.iv_name)
3793 feedback_fn("* shutting down instance on source node")
3794 logging.info("Shutting down instance %s on node %s",
3795 instance.name, source_node)
3797 result = self.rpc.call_instance_shutdown(source_node, instance)
3798 msg = result.RemoteFailMsg()
3800 if self.op.ignore_consistency:
3801 self.proc.LogWarning("Could not shutdown instance %s on node %s."
3802 " Proceeding anyway. Please make sure node"
3803 " %s is down. Error details: %s",
3804 instance.name, source_node, source_node, msg)
3806 raise errors.OpExecError("Could not shutdown instance %s on"
3808 (instance.name, source_node, msg))
3810 feedback_fn("* deactivating the instance's disks on source node")
3811 if not _ShutdownInstanceDisks(self, instance, ignore_primary=True):
3812 raise errors.OpExecError("Can't shut down the instance's disks.")
3814 instance.primary_node = target_node
3815 # distribute new instance config to the other nodes
3816 self.cfg.Update(instance)
3818 # Only start the instance if it's marked as up
3819 if instance.admin_up:
3820 feedback_fn("* activating the instance's disks on target node")
3821 logging.info("Starting instance %s on node %s",
3822 instance.name, target_node)
3824 disks_ok, _ = _AssembleInstanceDisks(self, instance,
3825 ignore_secondaries=True)
3827 _ShutdownInstanceDisks(self, instance)
3828 raise errors.OpExecError("Can't activate the instance's disks")
3830 feedback_fn("* starting the instance on the target node")
3831 result = self.rpc.call_instance_start(target_node, instance, None, None)
3832 msg = result.RemoteFailMsg()
3834 _ShutdownInstanceDisks(self, instance)
3835 raise errors.OpExecError("Could not start instance %s on node %s: %s" %
3836 (instance.name, target_node, msg))
3839 class LUMigrateInstance(LogicalUnit):
3840 """Migrate an instance.
3842 This is migration without shutting down, compared to the failover,
3843 which is done with shutdown.
3846 HPATH = "instance-migrate"
3847 HTYPE = constants.HTYPE_INSTANCE
3848 _OP_REQP = ["instance_name", "live", "cleanup"]
3852 def ExpandNames(self):
3853 self._ExpandAndLockInstance()
3854 self.needed_locks[locking.LEVEL_NODE] = []
3855 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3857 def DeclareLocks(self, level):
3858 if level == locking.LEVEL_NODE:
3859 self._LockInstancesNodes()
3861 def BuildHooksEnv(self):
3864 This runs on master, primary and secondary nodes of the instance.
3867 env = _BuildInstanceHookEnvByObject(self, self.instance)
3868 env["MIGRATE_LIVE"] = self.op.live
3869 env["MIGRATE_CLEANUP"] = self.op.cleanup
3870 nl = [self.cfg.GetMasterNode()] + list(self.instance.secondary_nodes)
3873 def CheckPrereq(self):
3874 """Check prerequisites.
3876 This checks that the instance is in the cluster.
3879 instance = self.cfg.GetInstanceInfo(
3880 self.cfg.ExpandInstanceName(self.op.instance_name))
3881 if instance is None:
3882 raise errors.OpPrereqError("Instance '%s' not known" %
3883 self.op.instance_name)
3885 if instance.disk_template != constants.DT_DRBD8:
3886 raise errors.OpPrereqError("Instance's disk layout is not"
3887 " drbd8, cannot migrate.")
3889 secondary_nodes = instance.secondary_nodes
3890 if not secondary_nodes:
3891 raise errors.ConfigurationError("No secondary node but using"
3892 " drbd8 disk template")
3894 i_be = self.cfg.GetClusterInfo().FillBE(instance)
3896 target_node = secondary_nodes[0]
3897 # check memory requirements on the secondary node
3898 _CheckNodeFreeMemory(self, target_node, "migrating instance %s" %
3899 instance.name, i_be[constants.BE_MEMORY],
3900 instance.hypervisor)
3902 # check bridge existence
3903 brlist = [nic.bridge for nic in instance.nics]
3904 result = self.rpc.call_bridges_exist(target_node, brlist)
3905 if result.failed or not result.data:
3906 raise errors.OpPrereqError("One or more target bridges %s does not"
3907 " exist on destination node '%s'" %
3908 (brlist, target_node))
3910 if not self.op.cleanup:
3911 _CheckNodeNotDrained(self, target_node)
3912 result = self.rpc.call_instance_migratable(instance.primary_node,
3914 msg = result.RemoteFailMsg()
3916 raise errors.OpPrereqError("Can't migrate: %s - please use failover" %
3919 self.instance = instance
3921 def _WaitUntilSync(self):
3922 """Poll with custom rpc for disk sync.
3924 This uses our own step-based rpc call.
3927 self.feedback_fn("* wait until resync is done")
3931 result = self.rpc.call_drbd_wait_sync(self.all_nodes,
3933 self.instance.disks)
3935 for node, nres in result.items():
3936 msg = nres.RemoteFailMsg()
3938 raise errors.OpExecError("Cannot resync disks on node %s: %s" %
3940 node_done, node_percent = nres.payload
3941 all_done = all_done and node_done
3942 if node_percent is not None:
3943 min_percent = min(min_percent, node_percent)
3945 if min_percent < 100:
3946 self.feedback_fn(" - progress: %.1f%%" % min_percent)
3949 def _EnsureSecondary(self, node):
3950 """Demote a node to secondary.
3953 self.feedback_fn("* switching node %s to secondary mode" % node)
3955 for dev in self.instance.disks:
3956 self.cfg.SetDiskID(dev, node)
3958 result = self.rpc.call_blockdev_close(node, self.instance.name,
3959 self.instance.disks)
3960 msg = result.RemoteFailMsg()
3962 raise errors.OpExecError("Cannot change disk to secondary on node %s,"
3963 " error %s" % (node, msg))
3965 def _GoStandalone(self):
3966 """Disconnect from the network.
3969 self.feedback_fn("* changing into standalone mode")
3970 result = self.rpc.call_drbd_disconnect_net(self.all_nodes, self.nodes_ip,
3971 self.instance.disks)
3972 for node, nres in result.items():
3973 msg = nres.RemoteFailMsg()
3975 raise errors.OpExecError("Cannot disconnect disks node %s,"
3976 " error %s" % (node, msg))
3978 def _GoReconnect(self, multimaster):
3979 """Reconnect to the network.
3985 msg = "single-master"
3986 self.feedback_fn("* changing disks into %s mode" % msg)
3987 result = self.rpc.call_drbd_attach_net(self.all_nodes, self.nodes_ip,
3988 self.instance.disks,
3989 self.instance.name, multimaster)
3990 for node, nres in result.items():
3991 msg = nres.RemoteFailMsg()
3993 raise errors.OpExecError("Cannot change disks config on node %s,"
3994 " error: %s" % (node, msg))
3996 def _ExecCleanup(self):
3997 """Try to cleanup after a failed migration.
3999 The cleanup is done by:
4000 - check that the instance is running only on one node
4001 (and update the config if needed)
4002 - change disks on its secondary node to secondary
4003 - wait until disks are fully synchronized
4004 - disconnect from the network
4005 - change disks into single-master mode
4006 - wait again until disks are fully synchronized
4009 instance = self.instance
4010 target_node = self.target_node
4011 source_node = self.source_node
4013 # check running on only one node
4014 self.feedback_fn("* checking where the instance actually runs"
4015 " (if this hangs, the hypervisor might be in"
4017 ins_l = self.rpc.call_instance_list(self.all_nodes, [instance.hypervisor])
4018 for node, result in ins_l.items():
4020 if not isinstance(result.data, list):
4021 raise errors.OpExecError("Can't contact node '%s'" % node)
4023 runningon_source = instance.name in ins_l[source_node].data
4024 runningon_target = instance.name in ins_l[target_node].data
4026 if runningon_source and runningon_target:
4027 raise errors.OpExecError("Instance seems to be running on two nodes,"
4028 " or the hypervisor is confused. You will have"
4029 " to ensure manually that it runs only on one"
4030 " and restart this operation.")
4032 if not (runningon_source or runningon_target):
4033 raise errors.OpExecError("Instance does not seem to be running at all."
4034 " In this case, it's safer to repair by"
4035 " running 'gnt-instance stop' to ensure disk"
4036 " shutdown, and then restarting it.")
4038 if runningon_target:
4039 # the migration has actually succeeded, we need to update the config
4040 self.feedback_fn("* instance running on secondary node (%s),"
4041 " updating config" % target_node)
4042 instance.primary_node = target_node
4043 self.cfg.Update(instance)
4044 demoted_node = source_node
4046 self.feedback_fn("* instance confirmed to be running on its"
4047 " primary node (%s)" % source_node)
4048 demoted_node = target_node
4050 self._EnsureSecondary(demoted_node)
4052 self._WaitUntilSync()
4053 except errors.OpExecError:
4054 # we ignore here errors, since if the device is standalone, it
4055 # won't be able to sync
4057 self._GoStandalone()
4058 self._GoReconnect(False)
4059 self._WaitUntilSync()
4061 self.feedback_fn("* done")
4063 def _RevertDiskStatus(self):
4064 """Try to revert the disk status after a failed migration.
4067 target_node = self.target_node
4069 self._EnsureSecondary(target_node)
4070 self._GoStandalone()
4071 self._GoReconnect(False)
4072 self._WaitUntilSync()
4073 except errors.OpExecError, err:
4074 self.LogWarning("Migration failed and I can't reconnect the"
4075 " drives: error '%s'\n"
4076 "Please look and recover the instance status" %
4079 def _AbortMigration(self):
4080 """Call the hypervisor code to abort a started migration.
4083 instance = self.instance
4084 target_node = self.target_node
4085 migration_info = self.migration_info
4087 abort_result = self.rpc.call_finalize_migration(target_node,
4091 abort_msg = abort_result.RemoteFailMsg()
4093 logging.error("Aborting migration failed on target node %s: %s" %
4094 (target_node, abort_msg))
4095 # Don't raise an exception here, as we stil have to try to revert the
4096 # disk status, even if this step failed.
4098 def _ExecMigration(self):
4099 """Migrate an instance.
4101 The migrate is done by:
4102 - change the disks into dual-master mode
4103 - wait until disks are fully synchronized again
4104 - migrate the instance
4105 - change disks on the new secondary node (the old primary) to secondary
4106 - wait until disks are fully synchronized
4107 - change disks into single-master mode
4110 instance = self.instance
4111 target_node = self.target_node
4112 source_node = self.source_node
4114 self.feedback_fn("* checking disk consistency between source and target")
4115 for dev in instance.disks:
4116 if not _CheckDiskConsistency(self, dev, target_node, False):
4117 raise errors.OpExecError("Disk %s is degraded or not fully"
4118 " synchronized on target node,"
4119 " aborting migrate." % dev.iv_name)
4121 # First get the migration information from the remote node
4122 result = self.rpc.call_migration_info(source_node, instance)
4123 msg = result.RemoteFailMsg()
4125 log_err = ("Failed fetching source migration information from %s: %s" %
4127 logging.error(log_err)
4128 raise errors.OpExecError(log_err)
4130 self.migration_info = migration_info = result.payload
4132 # Then switch the disks to master/master mode
4133 self._EnsureSecondary(target_node)
4134 self._GoStandalone()
4135 self._GoReconnect(True)
4136 self._WaitUntilSync()
4138 self.feedback_fn("* preparing %s to accept the instance" % target_node)
4139 result = self.rpc.call_accept_instance(target_node,
4142 self.nodes_ip[target_node])
4144 msg = result.RemoteFailMsg()
4146 logging.error("Instance pre-migration failed, trying to revert"
4147 " disk status: %s", msg)
4148 self._AbortMigration()
4149 self._RevertDiskStatus()
4150 raise errors.OpExecError("Could not pre-migrate instance %s: %s" %
4151 (instance.name, msg))
4153 self.feedback_fn("* migrating instance to %s" % target_node)
4155 result = self.rpc.call_instance_migrate(source_node, instance,
4156 self.nodes_ip[target_node],
4158 msg = result.RemoteFailMsg()
4160 logging.error("Instance migration failed, trying to revert"
4161 " disk status: %s", msg)
4162 self._AbortMigration()
4163 self._RevertDiskStatus()
4164 raise errors.OpExecError("Could not migrate instance %s: %s" %
4165 (instance.name, msg))
4168 instance.primary_node = target_node
4169 # distribute new instance config to the other nodes
4170 self.cfg.Update(instance)
4172 result = self.rpc.call_finalize_migration(target_node,
4176 msg = result.RemoteFailMsg()
4178 logging.error("Instance migration succeeded, but finalization failed:"
4180 raise errors.OpExecError("Could not finalize instance migration: %s" %
4183 self._EnsureSecondary(source_node)
4184 self._WaitUntilSync()
4185 self._GoStandalone()
4186 self._GoReconnect(False)
4187 self._WaitUntilSync()
4189 self.feedback_fn("* done")
4191 def Exec(self, feedback_fn):
4192 """Perform the migration.
4195 self.feedback_fn = feedback_fn
4197 self.source_node = self.instance.primary_node
4198 self.target_node = self.instance.secondary_nodes[0]
4199 self.all_nodes = [self.source_node, self.target_node]
4201 self.source_node: self.cfg.GetNodeInfo(self.source_node).secondary_ip,
4202 self.target_node: self.cfg.GetNodeInfo(self.target_node).secondary_ip,
4205 return self._ExecCleanup()
4207 return self._ExecMigration()
4210 def _CreateBlockDev(lu, node, instance, device, force_create,
4212 """Create a tree of block devices on a given node.
4214 If this device type has to be created on secondaries, create it and
4217 If not, just recurse to children keeping the same 'force' value.
4219 @param lu: the lu on whose behalf we execute
4220 @param node: the node on which to create the device
4221 @type instance: L{objects.Instance}
4222 @param instance: the instance which owns the device
4223 @type device: L{objects.Disk}
4224 @param device: the device to create
4225 @type force_create: boolean
4226 @param force_create: whether to force creation of this device; this
4227 will be change to True whenever we find a device which has
4228 CreateOnSecondary() attribute
4229 @param info: the extra 'metadata' we should attach to the device
4230 (this will be represented as a LVM tag)
4231 @type force_open: boolean
4232 @param force_open: this parameter will be passes to the
4233 L{backend.BlockdevCreate} function where it specifies
4234 whether we run on primary or not, and it affects both
4235 the child assembly and the device own Open() execution
4238 if device.CreateOnSecondary():
4242 for child in device.children:
4243 _CreateBlockDev(lu, node, instance, child, force_create,
4246 if not force_create:
4249 _CreateSingleBlockDev(lu, node, instance, device, info, force_open)
4252 def _CreateSingleBlockDev(lu, node, instance, device, info, force_open):
4253 """Create a single block device on a given node.
4255 This will not recurse over children of the device, so they must be
4258 @param lu: the lu on whose behalf we execute
4259 @param node: the node on which to create the device
4260 @type instance: L{objects.Instance}
4261 @param instance: the instance which owns the device
4262 @type device: L{objects.Disk}
4263 @param device: the device to create
4264 @param info: the extra 'metadata' we should attach to the device
4265 (this will be represented as a LVM tag)
4266 @type force_open: boolean
4267 @param force_open: this parameter will be passes to the
4268 L{backend.BlockdevCreate} function where it specifies
4269 whether we run on primary or not, and it affects both
4270 the child assembly and the device own Open() execution
4273 lu.cfg.SetDiskID(device, node)
4274 result = lu.rpc.call_blockdev_create(node, device, device.size,
4275 instance.name, force_open, info)
4276 msg = result.RemoteFailMsg()
4278 raise errors.OpExecError("Can't create block device %s on"
4279 " node %s for instance %s: %s" %
4280 (device, node, instance.name, msg))
4281 if device.physical_id is None:
4282 device.physical_id = result.payload
4285 def _GenerateUniqueNames(lu, exts):
4286 """Generate a suitable LV name.
4288 This will generate a logical volume name for the given instance.
4293 new_id = lu.cfg.GenerateUniqueID()
4294 results.append("%s%s" % (new_id, val))
4298 def _GenerateDRBD8Branch(lu, primary, secondary, size, names, iv_name,
4300 """Generate a drbd8 device complete with its children.
4303 port = lu.cfg.AllocatePort()
4304 vgname = lu.cfg.GetVGName()
4305 shared_secret = lu.cfg.GenerateDRBDSecret()
4306 dev_data = objects.Disk(dev_type=constants.LD_LV, size=size,
4307 logical_id=(vgname, names[0]))
4308 dev_meta = objects.Disk(dev_type=constants.LD_LV, size=128,
4309 logical_id=(vgname, names[1]))
4310 drbd_dev = objects.Disk(dev_type=constants.LD_DRBD8, size=size,
4311 logical_id=(primary, secondary, port,
4314 children=[dev_data, dev_meta],
4319 def _GenerateDiskTemplate(lu, template_name,
4320 instance_name, primary_node,
4321 secondary_nodes, disk_info,
4322 file_storage_dir, file_driver,
4324 """Generate the entire disk layout for a given template type.
4327 #TODO: compute space requirements
4329 vgname = lu.cfg.GetVGName()
4330 disk_count = len(disk_info)
4332 if template_name == constants.DT_DISKLESS:
4334 elif template_name == constants.DT_PLAIN:
4335 if len(secondary_nodes) != 0:
4336 raise errors.ProgrammerError("Wrong template configuration")
4338 names = _GenerateUniqueNames(lu, [".disk%d" % (base_index + i)
4339 for i in range(disk_count)])
4340 for idx, disk in enumerate(disk_info):
4341 disk_index = idx + base_index
4342 disk_dev = objects.Disk(dev_type=constants.LD_LV, size=disk["size"],
4343 logical_id=(vgname, names[idx]),
4344 iv_name="disk/%d" % disk_index,
4346 disks.append(disk_dev)
4347 elif template_name == constants.DT_DRBD8:
4348 if len(secondary_nodes) != 1:
4349 raise errors.ProgrammerError("Wrong template configuration")
4350 remote_node = secondary_nodes[0]
4351 minors = lu.cfg.AllocateDRBDMinor(
4352 [primary_node, remote_node] * len(disk_info), instance_name)
4355 for lv_prefix in _GenerateUniqueNames(lu, [".disk%d" % (base_index + i)
4356 for i in range(disk_count)]):
4357 names.append(lv_prefix + "_data")
4358 names.append(lv_prefix + "_meta")
4359 for idx, disk in enumerate(disk_info):
4360 disk_index = idx + base_index
4361 disk_dev = _GenerateDRBD8Branch(lu, primary_node, remote_node,
4362 disk["size"], names[idx*2:idx*2+2],
4363 "disk/%d" % disk_index,
4364 minors[idx*2], minors[idx*2+1])
4365 disk_dev.mode = disk["mode"]
4366 disks.append(disk_dev)
4367 elif template_name == constants.DT_FILE:
4368 if len(secondary_nodes) != 0:
4369 raise errors.ProgrammerError("Wrong template configuration")
4371 for idx, disk in enumerate(disk_info):
4372 disk_index = idx + base_index
4373 disk_dev = objects.Disk(dev_type=constants.LD_FILE, size=disk["size"],
4374 iv_name="disk/%d" % disk_index,
4375 logical_id=(file_driver,
4376 "%s/disk%d" % (file_storage_dir,
4379 disks.append(disk_dev)
4381 raise errors.ProgrammerError("Invalid disk template '%s'" % template_name)
4385 def _GetInstanceInfoText(instance):
4386 """Compute that text that should be added to the disk's metadata.
4389 return "originstname+%s" % instance.name
4392 def _CreateDisks(lu, instance):
4393 """Create all disks for an instance.
4395 This abstracts away some work from AddInstance.
4397 @type lu: L{LogicalUnit}
4398 @param lu: the logical unit on whose behalf we execute
4399 @type instance: L{objects.Instance}
4400 @param instance: the instance whose disks we should create
4402 @return: the success of the creation
4405 info = _GetInstanceInfoText(instance)
4406 pnode = instance.primary_node
4408 if instance.disk_template == constants.DT_FILE:
4409 file_storage_dir = os.path.dirname(instance.disks[0].logical_id[1])
4410 result = lu.rpc.call_file_storage_dir_create(pnode, file_storage_dir)
4412 if result.failed or not result.data:
4413 raise errors.OpExecError("Could not connect to node '%s'" % pnode)
4415 if not result.data[0]:
4416 raise errors.OpExecError("Failed to create directory '%s'" %
4419 # Note: this needs to be kept in sync with adding of disks in
4420 # LUSetInstanceParams
4421 for device in instance.disks:
4422 logging.info("Creating volume %s for instance %s",
4423 device.iv_name, instance.name)
4425 for node in instance.all_nodes:
4426 f_create = node == pnode
4427 _CreateBlockDev(lu, node, instance, device, f_create, info, f_create)
4430 def _RemoveDisks(lu, instance):
4431 """Remove all disks for an instance.
4433 This abstracts away some work from `AddInstance()` and
4434 `RemoveInstance()`. Note that in case some of the devices couldn't
4435 be removed, the removal will continue with the other ones (compare
4436 with `_CreateDisks()`).
4438 @type lu: L{LogicalUnit}
4439 @param lu: the logical unit on whose behalf we execute
4440 @type instance: L{objects.Instance}
4441 @param instance: the instance whose disks we should remove
4443 @return: the success of the removal
4446 logging.info("Removing block devices for instance %s", instance.name)
4449 for device in instance.disks:
4450 for node, disk in device.ComputeNodeTree(instance.primary_node):
4451 lu.cfg.SetDiskID(disk, node)
4452 msg = lu.rpc.call_blockdev_remove(node, disk).RemoteFailMsg()
4454 lu.LogWarning("Could not remove block device %s on node %s,"
4455 " continuing anyway: %s", device.iv_name, node, msg)
4458 if instance.disk_template == constants.DT_FILE:
4459 file_storage_dir = os.path.dirname(instance.disks[0].logical_id[1])
4460 result = lu.rpc.call_file_storage_dir_remove(instance.primary_node,
4462 if result.failed or not result.data:
4463 logging.error("Could not remove directory '%s'", file_storage_dir)
4469 def _ComputeDiskSize(disk_template, disks):
4470 """Compute disk size requirements in the volume group
4473 # Required free disk space as a function of disk and swap space
4475 constants.DT_DISKLESS: None,
4476 constants.DT_PLAIN: sum(d["size"] for d in disks),
4477 # 128 MB are added for drbd metadata for each disk
4478 constants.DT_DRBD8: sum(d["size"] + 128 for d in disks),
4479 constants.DT_FILE: None,
4482 if disk_template not in req_size_dict:
4483 raise errors.ProgrammerError("Disk template '%s' size requirement"
4484 " is unknown" % disk_template)
4486 return req_size_dict[disk_template]
4489 def _CheckHVParams(lu, nodenames, hvname, hvparams):
4490 """Hypervisor parameter validation.
4492 This function abstract the hypervisor parameter validation to be
4493 used in both instance create and instance modify.
4495 @type lu: L{LogicalUnit}
4496 @param lu: the logical unit for which we check
4497 @type nodenames: list
4498 @param nodenames: the list of nodes on which we should check
4499 @type hvname: string
4500 @param hvname: the name of the hypervisor we should use
4501 @type hvparams: dict
4502 @param hvparams: the parameters which we need to check
4503 @raise errors.OpPrereqError: if the parameters are not valid
4506 hvinfo = lu.rpc.call_hypervisor_validate_params(nodenames,
4509 for node in nodenames:
4513 msg = info.RemoteFailMsg()
4515 raise errors.OpPrereqError("Hypervisor parameter validation"
4516 " failed on node %s: %s" % (node, msg))
4519 class LUCreateInstance(LogicalUnit):
4520 """Create an instance.
4523 HPATH = "instance-add"
4524 HTYPE = constants.HTYPE_INSTANCE
4525 _OP_REQP = ["instance_name", "disks", "disk_template",
4527 "wait_for_sync", "ip_check", "nics",
4528 "hvparams", "beparams"]
4531 def _ExpandNode(self, node):
4532 """Expands and checks one node name.
4535 node_full = self.cfg.ExpandNodeName(node)
4536 if node_full is None:
4537 raise errors.OpPrereqError("Unknown node %s" % node)
4540 def ExpandNames(self):
4541 """ExpandNames for CreateInstance.
4543 Figure out the right locks for instance creation.
4546 self.needed_locks = {}
4548 # set optional parameters to none if they don't exist
4549 for attr in ["pnode", "snode", "iallocator", "hypervisor"]:
4550 if not hasattr(self.op, attr):
4551 setattr(self.op, attr, None)
4553 # cheap checks, mostly valid constants given
4555 # verify creation mode
4556 if self.op.mode not in (constants.INSTANCE_CREATE,
4557 constants.INSTANCE_IMPORT):
4558 raise errors.OpPrereqError("Invalid instance creation mode '%s'" %
4561 # disk template and mirror node verification
4562 if self.op.disk_template not in constants.DISK_TEMPLATES:
4563 raise errors.OpPrereqError("Invalid disk template name")
4565 if self.op.hypervisor is None:
4566 self.op.hypervisor = self.cfg.GetHypervisorType()
4568 cluster = self.cfg.GetClusterInfo()
4569 enabled_hvs = cluster.enabled_hypervisors
4570 if self.op.hypervisor not in enabled_hvs:
4571 raise errors.OpPrereqError("Selected hypervisor (%s) not enabled in the"
4572 " cluster (%s)" % (self.op.hypervisor,
4573 ",".join(enabled_hvs)))
4575 # check hypervisor parameter syntax (locally)
4576 utils.ForceDictType(self.op.hvparams, constants.HVS_PARAMETER_TYPES)
4577 filled_hvp = cluster.FillDict(cluster.hvparams[self.op.hypervisor],
4579 hv_type = hypervisor.GetHypervisor(self.op.hypervisor)
4580 hv_type.CheckParameterSyntax(filled_hvp)
4581 self.hv_full = filled_hvp
4583 # fill and remember the beparams dict
4584 utils.ForceDictType(self.op.beparams, constants.BES_PARAMETER_TYPES)
4585 self.be_full = cluster.FillDict(cluster.beparams[constants.BEGR_DEFAULT],
4588 #### instance parameters check
4590 # instance name verification
4591 hostname1 = utils.HostInfo(self.op.instance_name)
4592 self.op.instance_name = instance_name = hostname1.name
4594 # this is just a preventive check, but someone might still add this
4595 # instance in the meantime, and creation will fail at lock-add time
4596 if instance_name in self.cfg.GetInstanceList():
4597 raise errors.OpPrereqError("Instance '%s' is already in the cluster" %
4600 self.add_locks[locking.LEVEL_INSTANCE] = instance_name
4604 for nic in self.op.nics:
4605 # ip validity checks
4606 ip = nic.get("ip", None)
4607 if ip is None or ip.lower() == "none":
4609 elif ip.lower() == constants.VALUE_AUTO:
4610 nic_ip = hostname1.ip
4612 if not utils.IsValidIP(ip):
4613 raise errors.OpPrereqError("Given IP address '%s' doesn't look"
4614 " like a valid IP" % ip)
4617 # MAC address verification
4618 mac = nic.get("mac", constants.VALUE_AUTO)
4619 if mac not in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
4620 if not utils.IsValidMac(mac.lower()):
4621 raise errors.OpPrereqError("Invalid MAC address specified: %s" %
4624 # or validate/reserve the current one
4625 if self.cfg.IsMacInUse(mac):
4626 raise errors.OpPrereqError("MAC address %s already in use"
4627 " in cluster" % mac)
4629 # bridge verification
4630 bridge = nic.get("bridge", None)
4632 bridge = self.cfg.GetDefBridge()
4633 self.nics.append(objects.NIC(mac=mac, ip=nic_ip, bridge=bridge))
4635 # disk checks/pre-build
4637 for disk in self.op.disks:
4638 mode = disk.get("mode", constants.DISK_RDWR)
4639 if mode not in constants.DISK_ACCESS_SET:
4640 raise errors.OpPrereqError("Invalid disk access mode '%s'" %
4642 size = disk.get("size", None)
4644 raise errors.OpPrereqError("Missing disk size")
4648 raise errors.OpPrereqError("Invalid disk size '%s'" % size)
4649 self.disks.append({"size": size, "mode": mode})
4651 # used in CheckPrereq for ip ping check
4652 self.check_ip = hostname1.ip
4654 # file storage checks
4655 if (self.op.file_driver and
4656 not self.op.file_driver in constants.FILE_DRIVER):
4657 raise errors.OpPrereqError("Invalid file driver name '%s'" %
4658 self.op.file_driver)
4660 if self.op.file_storage_dir and os.path.isabs(self.op.file_storage_dir):
4661 raise errors.OpPrereqError("File storage directory path not absolute")
4663 ### Node/iallocator related checks
4664 if [self.op.iallocator, self.op.pnode].count(None) != 1:
4665 raise errors.OpPrereqError("One and only one of iallocator and primary"
4666 " node must be given")
4668 if self.op.iallocator:
4669 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
4671 self.op.pnode = self._ExpandNode(self.op.pnode)
4672 nodelist = [self.op.pnode]
4673 if self.op.snode is not None:
4674 self.op.snode = self._ExpandNode(self.op.snode)
4675 nodelist.append(self.op.snode)
4676 self.needed_locks[locking.LEVEL_NODE] = nodelist
4678 # in case of import lock the source node too
4679 if self.op.mode == constants.INSTANCE_IMPORT:
4680 src_node = getattr(self.op, "src_node", None)
4681 src_path = getattr(self.op, "src_path", None)
4683 if src_path is None:
4684 self.op.src_path = src_path = self.op.instance_name
4686 if src_node is None:
4687 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
4688 self.op.src_node = None
4689 if os.path.isabs(src_path):
4690 raise errors.OpPrereqError("Importing an instance from an absolute"
4691 " path requires a source node option.")
4693 self.op.src_node = src_node = self._ExpandNode(src_node)
4694 if self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET:
4695 self.needed_locks[locking.LEVEL_NODE].append(src_node)
4696 if not os.path.isabs(src_path):
4697 self.op.src_path = src_path = \
4698 os.path.join(constants.EXPORT_DIR, src_path)
4700 else: # INSTANCE_CREATE
4701 if getattr(self.op, "os_type", None) is None:
4702 raise errors.OpPrereqError("No guest OS specified")
4704 def _RunAllocator(self):
4705 """Run the allocator based on input opcode.
4708 nics = [n.ToDict() for n in self.nics]
4709 ial = IAllocator(self,
4710 mode=constants.IALLOCATOR_MODE_ALLOC,
4711 name=self.op.instance_name,
4712 disk_template=self.op.disk_template,
4715 vcpus=self.be_full[constants.BE_VCPUS],
4716 mem_size=self.be_full[constants.BE_MEMORY],
4719 hypervisor=self.op.hypervisor,
4722 ial.Run(self.op.iallocator)
4725 raise errors.OpPrereqError("Can't compute nodes using"
4726 " iallocator '%s': %s" % (self.op.iallocator,
4728 if len(ial.nodes) != ial.required_nodes:
4729 raise errors.OpPrereqError("iallocator '%s' returned invalid number"
4730 " of nodes (%s), required %s" %
4731 (self.op.iallocator, len(ial.nodes),
4732 ial.required_nodes))
4733 self.op.pnode = ial.nodes[0]
4734 self.LogInfo("Selected nodes for instance %s via iallocator %s: %s",
4735 self.op.instance_name, self.op.iallocator,
4736 ", ".join(ial.nodes))
4737 if ial.required_nodes == 2:
4738 self.op.snode = ial.nodes[1]
4740 def BuildHooksEnv(self):
4743 This runs on master, primary and secondary nodes of the instance.
4747 "ADD_MODE": self.op.mode,
4749 if self.op.mode == constants.INSTANCE_IMPORT:
4750 env["SRC_NODE"] = self.op.src_node
4751 env["SRC_PATH"] = self.op.src_path
4752 env["SRC_IMAGES"] = self.src_images
4754 env.update(_BuildInstanceHookEnv(
4755 name=self.op.instance_name,
4756 primary_node=self.op.pnode,
4757 secondary_nodes=self.secondaries,
4758 status=self.op.start,
4759 os_type=self.op.os_type,
4760 memory=self.be_full[constants.BE_MEMORY],
4761 vcpus=self.be_full[constants.BE_VCPUS],
4762 nics=[(n.ip, n.bridge, n.mac) for n in self.nics],
4763 disk_template=self.op.disk_template,
4764 disks=[(d["size"], d["mode"]) for d in self.disks],
4767 hypervisor_name=self.op.hypervisor,
4770 nl = ([self.cfg.GetMasterNode(), self.op.pnode] +
4775 def CheckPrereq(self):
4776 """Check prerequisites.
4779 if (not self.cfg.GetVGName() and
4780 self.op.disk_template not in constants.DTS_NOT_LVM):
4781 raise errors.OpPrereqError("Cluster does not support lvm-based"
4784 if self.op.mode == constants.INSTANCE_IMPORT:
4785 src_node = self.op.src_node
4786 src_path = self.op.src_path
4788 if src_node is None:
4789 exp_list = self.rpc.call_export_list(
4790 self.acquired_locks[locking.LEVEL_NODE])
4792 for node in exp_list:
4793 if not exp_list[node].failed and src_path in exp_list[node].data:
4795 self.op.src_node = src_node = node
4796 self.op.src_path = src_path = os.path.join(constants.EXPORT_DIR,
4800 raise errors.OpPrereqError("No export found for relative path %s" %
4803 _CheckNodeOnline(self, src_node)
4804 result = self.rpc.call_export_info(src_node, src_path)
4807 raise errors.OpPrereqError("No export found in dir %s" % src_path)
4809 export_info = result.data
4810 if not export_info.has_section(constants.INISECT_EXP):
4811 raise errors.ProgrammerError("Corrupted export config")
4813 ei_version = export_info.get(constants.INISECT_EXP, 'version')
4814 if (int(ei_version) != constants.EXPORT_VERSION):
4815 raise errors.OpPrereqError("Wrong export version %s (wanted %d)" %
4816 (ei_version, constants.EXPORT_VERSION))
4818 # Check that the new instance doesn't have less disks than the export
4819 instance_disks = len(self.disks)
4820 export_disks = export_info.getint(constants.INISECT_INS, 'disk_count')
4821 if instance_disks < export_disks:
4822 raise errors.OpPrereqError("Not enough disks to import."
4823 " (instance: %d, export: %d)" %
4824 (instance_disks, export_disks))
4826 self.op.os_type = export_info.get(constants.INISECT_EXP, 'os')
4828 for idx in range(export_disks):
4829 option = 'disk%d_dump' % idx
4830 if export_info.has_option(constants.INISECT_INS, option):
4831 # FIXME: are the old os-es, disk sizes, etc. useful?
4832 export_name = export_info.get(constants.INISECT_INS, option)
4833 image = os.path.join(src_path, export_name)
4834 disk_images.append(image)
4836 disk_images.append(False)
4838 self.src_images = disk_images
4840 old_name = export_info.get(constants.INISECT_INS, 'name')
4841 # FIXME: int() here could throw a ValueError on broken exports
4842 exp_nic_count = int(export_info.get(constants.INISECT_INS, 'nic_count'))
4843 if self.op.instance_name == old_name:
4844 for idx, nic in enumerate(self.nics):
4845 if nic.mac == constants.VALUE_AUTO and exp_nic_count >= idx:
4846 nic_mac_ini = 'nic%d_mac' % idx
4847 nic.mac = export_info.get(constants.INISECT_INS, nic_mac_ini)
4849 # ENDIF: self.op.mode == constants.INSTANCE_IMPORT
4850 # ip ping checks (we use the same ip that was resolved in ExpandNames)
4851 if self.op.start and not self.op.ip_check:
4852 raise errors.OpPrereqError("Cannot ignore IP address conflicts when"
4853 " adding an instance in start mode")
4855 if self.op.ip_check:
4856 if utils.TcpPing(self.check_ip, constants.DEFAULT_NODED_PORT):
4857 raise errors.OpPrereqError("IP %s of instance %s already in use" %
4858 (self.check_ip, self.op.instance_name))
4860 #### mac address generation
4861 # By generating here the mac address both the allocator and the hooks get
4862 # the real final mac address rather than the 'auto' or 'generate' value.
4863 # There is a race condition between the generation and the instance object
4864 # creation, which means that we know the mac is valid now, but we're not
4865 # sure it will be when we actually add the instance. If things go bad
4866 # adding the instance will abort because of a duplicate mac, and the
4867 # creation job will fail.
4868 for nic in self.nics:
4869 if nic.mac in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
4870 nic.mac = self.cfg.GenerateMAC()
4874 if self.op.iallocator is not None:
4875 self._RunAllocator()
4877 #### node related checks
4879 # check primary node
4880 self.pnode = pnode = self.cfg.GetNodeInfo(self.op.pnode)
4881 assert self.pnode is not None, \
4882 "Cannot retrieve locked node %s" % self.op.pnode
4884 raise errors.OpPrereqError("Cannot use offline primary node '%s'" %
4887 raise errors.OpPrereqError("Cannot use drained primary node '%s'" %
4890 self.secondaries = []
4892 # mirror node verification
4893 if self.op.disk_template in constants.DTS_NET_MIRROR:
4894 if self.op.snode is None:
4895 raise errors.OpPrereqError("The networked disk templates need"
4897 if self.op.snode == pnode.name:
4898 raise errors.OpPrereqError("The secondary node cannot be"
4899 " the primary node.")
4900 _CheckNodeOnline(self, self.op.snode)
4901 _CheckNodeNotDrained(self, self.op.snode)
4902 self.secondaries.append(self.op.snode)
4904 nodenames = [pnode.name] + self.secondaries
4906 req_size = _ComputeDiskSize(self.op.disk_template,
4909 # Check lv size requirements
4910 if req_size is not None:
4911 nodeinfo = self.rpc.call_node_info(nodenames, self.cfg.GetVGName(),
4913 for node in nodenames:
4914 info = nodeinfo[node]
4918 raise errors.OpPrereqError("Cannot get current information"
4919 " from node '%s'" % node)
4920 vg_free = info.get('vg_free', None)
4921 if not isinstance(vg_free, int):
4922 raise errors.OpPrereqError("Can't compute free disk space on"
4924 if req_size > info['vg_free']:
4925 raise errors.OpPrereqError("Not enough disk space on target node %s."
4926 " %d MB available, %d MB required" %
4927 (node, info['vg_free'], req_size))
4929 _CheckHVParams(self, nodenames, self.op.hypervisor, self.op.hvparams)
4932 result = self.rpc.call_os_get(pnode.name, self.op.os_type)
4934 if not isinstance(result.data, objects.OS) or not result.data:
4935 raise errors.OpPrereqError("OS '%s' not in supported os list for"
4936 " primary node" % self.op.os_type)
4938 # bridge check on primary node
4939 bridges = [n.bridge for n in self.nics]
4940 result = self.rpc.call_bridges_exist(self.pnode.name, bridges)
4943 raise errors.OpPrereqError("One of the target bridges '%s' does not"
4944 " exist on destination node '%s'" %
4945 (",".join(bridges), pnode.name))
4947 # memory check on primary node
4949 _CheckNodeFreeMemory(self, self.pnode.name,
4950 "creating instance %s" % self.op.instance_name,
4951 self.be_full[constants.BE_MEMORY],
4954 def Exec(self, feedback_fn):
4955 """Create and add the instance to the cluster.
4958 instance = self.op.instance_name
4959 pnode_name = self.pnode.name
4961 ht_kind = self.op.hypervisor
4962 if ht_kind in constants.HTS_REQ_PORT:
4963 network_port = self.cfg.AllocatePort()
4967 ##if self.op.vnc_bind_address is None:
4968 ## self.op.vnc_bind_address = constants.VNC_DEFAULT_BIND_ADDRESS
4970 # this is needed because os.path.join does not accept None arguments
4971 if self.op.file_storage_dir is None:
4972 string_file_storage_dir = ""
4974 string_file_storage_dir = self.op.file_storage_dir
4976 # build the full file storage dir path
4977 file_storage_dir = os.path.normpath(os.path.join(
4978 self.cfg.GetFileStorageDir(),
4979 string_file_storage_dir, instance))
4982 disks = _GenerateDiskTemplate(self,
4983 self.op.disk_template,
4984 instance, pnode_name,
4988 self.op.file_driver,
4991 iobj = objects.Instance(name=instance, os=self.op.os_type,
4992 primary_node=pnode_name,
4993 nics=self.nics, disks=disks,
4994 disk_template=self.op.disk_template,
4996 network_port=network_port,
4997 beparams=self.op.beparams,
4998 hvparams=self.op.hvparams,
4999 hypervisor=self.op.hypervisor,
5002 feedback_fn("* creating instance disks...")
5004 _CreateDisks(self, iobj)
5005 except errors.OpExecError:
5006 self.LogWarning("Device creation failed, reverting...")
5008 _RemoveDisks(self, iobj)
5010 self.cfg.ReleaseDRBDMinors(instance)
5013 feedback_fn("adding instance %s to cluster config" % instance)
5015 self.cfg.AddInstance(iobj)
5016 # Declare that we don't want to remove the instance lock anymore, as we've
5017 # added the instance to the config
5018 del self.remove_locks[locking.LEVEL_INSTANCE]
5019 # Unlock all the nodes
5020 if self.op.mode == constants.INSTANCE_IMPORT:
5021 nodes_keep = [self.op.src_node]
5022 nodes_release = [node for node in self.acquired_locks[locking.LEVEL_NODE]
5023 if node != self.op.src_node]
5024 self.context.glm.release(locking.LEVEL_NODE, nodes_release)
5025 self.acquired_locks[locking.LEVEL_NODE] = nodes_keep
5027 self.context.glm.release(locking.LEVEL_NODE)
5028 del self.acquired_locks[locking.LEVEL_NODE]
5030 if self.op.wait_for_sync:
5031 disk_abort = not _WaitForSync(self, iobj)
5032 elif iobj.disk_template in constants.DTS_NET_MIRROR:
5033 # make sure the disks are not degraded (still sync-ing is ok)
5035 feedback_fn("* checking mirrors status")
5036 disk_abort = not _WaitForSync(self, iobj, oneshot=True)
5041 _RemoveDisks(self, iobj)
5042 self.cfg.RemoveInstance(iobj.name)
5043 # Make sure the instance lock gets removed
5044 self.remove_locks[locking.LEVEL_INSTANCE] = iobj.name
5045 raise errors.OpExecError("There are some degraded disks for"
5048 feedback_fn("creating os for instance %s on node %s" %
5049 (instance, pnode_name))
5051 if iobj.disk_template != constants.DT_DISKLESS:
5052 if self.op.mode == constants.INSTANCE_CREATE:
5053 feedback_fn("* running the instance OS create scripts...")
5054 result = self.rpc.call_instance_os_add(pnode_name, iobj)
5055 msg = result.RemoteFailMsg()
5057 raise errors.OpExecError("Could not add os for instance %s"
5059 (instance, pnode_name, msg))
5061 elif self.op.mode == constants.INSTANCE_IMPORT:
5062 feedback_fn("* running the instance OS import scripts...")
5063 src_node = self.op.src_node
5064 src_images = self.src_images
5065 cluster_name = self.cfg.GetClusterName()
5066 import_result = self.rpc.call_instance_os_import(pnode_name, iobj,
5067 src_node, src_images,
5069 import_result.Raise()
5070 for idx, result in enumerate(import_result.data):
5072 self.LogWarning("Could not import the image %s for instance"
5073 " %s, disk %d, on node %s" %
5074 (src_images[idx], instance, idx, pnode_name))
5076 # also checked in the prereq part
5077 raise errors.ProgrammerError("Unknown OS initialization mode '%s'"
5081 iobj.admin_up = True
5082 self.cfg.Update(iobj)
5083 logging.info("Starting instance %s on node %s", instance, pnode_name)
5084 feedback_fn("* starting instance...")
5085 result = self.rpc.call_instance_start(pnode_name, iobj, None, None)
5086 msg = result.RemoteFailMsg()
5088 raise errors.OpExecError("Could not start instance: %s" % msg)
5091 class LUConnectConsole(NoHooksLU):
5092 """Connect to an instance's console.
5094 This is somewhat special in that it returns the command line that
5095 you need to run on the master node in order to connect to the
5099 _OP_REQP = ["instance_name"]
5102 def ExpandNames(self):
5103 self._ExpandAndLockInstance()
5105 def CheckPrereq(self):
5106 """Check prerequisites.
5108 This checks that the instance is in the cluster.
5111 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5112 assert self.instance is not None, \
5113 "Cannot retrieve locked instance %s" % self.op.instance_name
5114 _CheckNodeOnline(self, self.instance.primary_node)
5116 def Exec(self, feedback_fn):
5117 """Connect to the console of an instance
5120 instance = self.instance
5121 node = instance.primary_node
5123 node_insts = self.rpc.call_instance_list([node],
5124 [instance.hypervisor])[node]
5127 if instance.name not in node_insts.data:
5128 raise errors.OpExecError("Instance %s is not running." % instance.name)
5130 logging.debug("Connecting to console of %s on %s", instance.name, node)
5132 hyper = hypervisor.GetHypervisor(instance.hypervisor)
5133 cluster = self.cfg.GetClusterInfo()
5134 # beparams and hvparams are passed separately, to avoid editing the
5135 # instance and then saving the defaults in the instance itself.
5136 hvparams = cluster.FillHV(instance)
5137 beparams = cluster.FillBE(instance)
5138 console_cmd = hyper.GetShellCommandForConsole(instance, hvparams, beparams)
5141 return self.ssh.BuildCmd(node, "root", console_cmd, batch=True, tty=True)
5144 class LUReplaceDisks(LogicalUnit):
5145 """Replace the disks of an instance.
5148 HPATH = "mirrors-replace"
5149 HTYPE = constants.HTYPE_INSTANCE
5150 _OP_REQP = ["instance_name", "mode", "disks"]
5153 def CheckArguments(self):
5154 if not hasattr(self.op, "remote_node"):
5155 self.op.remote_node = None
5156 if not hasattr(self.op, "iallocator"):
5157 self.op.iallocator = None
5159 # check for valid parameter combination
5160 cnt = [self.op.remote_node, self.op.iallocator].count(None)
5161 if self.op.mode == constants.REPLACE_DISK_CHG:
5163 raise errors.OpPrereqError("When changing the secondary either an"
5164 " iallocator script must be used or the"
5167 raise errors.OpPrereqError("Give either the iallocator or the new"
5168 " secondary, not both")
5169 else: # not replacing the secondary
5171 raise errors.OpPrereqError("The iallocator and new node options can"
5172 " be used only when changing the"
5175 def ExpandNames(self):
5176 self._ExpandAndLockInstance()
5178 if self.op.iallocator is not None:
5179 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
5180 elif self.op.remote_node is not None:
5181 remote_node = self.cfg.ExpandNodeName(self.op.remote_node)
5182 if remote_node is None:
5183 raise errors.OpPrereqError("Node '%s' not known" %
5184 self.op.remote_node)
5185 self.op.remote_node = remote_node
5186 # Warning: do not remove the locking of the new secondary here
5187 # unless DRBD8.AddChildren is changed to work in parallel;
5188 # currently it doesn't since parallel invocations of
5189 # FindUnusedMinor will conflict
5190 self.needed_locks[locking.LEVEL_NODE] = [remote_node]
5191 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_APPEND
5193 self.needed_locks[locking.LEVEL_NODE] = []
5194 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5196 def DeclareLocks(self, level):
5197 # If we're not already locking all nodes in the set we have to declare the
5198 # instance's primary/secondary nodes.
5199 if (level == locking.LEVEL_NODE and
5200 self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET):
5201 self._LockInstancesNodes()
5203 def _RunAllocator(self):
5204 """Compute a new secondary node using an IAllocator.
5207 ial = IAllocator(self,
5208 mode=constants.IALLOCATOR_MODE_RELOC,
5209 name=self.op.instance_name,
5210 relocate_from=[self.sec_node])
5212 ial.Run(self.op.iallocator)
5215 raise errors.OpPrereqError("Can't compute nodes using"
5216 " iallocator '%s': %s" % (self.op.iallocator,
5218 if len(ial.nodes) != ial.required_nodes:
5219 raise errors.OpPrereqError("iallocator '%s' returned invalid number"
5220 " of nodes (%s), required %s" %
5221 (self.op.iallocator,
5222 len(ial.nodes), ial.required_nodes))
5223 self.op.remote_node = ial.nodes[0]
5224 self.LogInfo("Selected new secondary for the instance: %s",
5225 self.op.remote_node)
5227 def BuildHooksEnv(self):
5230 This runs on the master, the primary and all the secondaries.
5234 "MODE": self.op.mode,
5235 "NEW_SECONDARY": self.op.remote_node,
5236 "OLD_SECONDARY": self.instance.secondary_nodes[0],
5238 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
5240 self.cfg.GetMasterNode(),
5241 self.instance.primary_node,
5243 if self.op.remote_node is not None:
5244 nl.append(self.op.remote_node)
5247 def CheckPrereq(self):
5248 """Check prerequisites.
5250 This checks that the instance is in the cluster.
5253 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5254 assert instance is not None, \
5255 "Cannot retrieve locked instance %s" % self.op.instance_name
5256 self.instance = instance
5258 if instance.disk_template != constants.DT_DRBD8:
5259 raise errors.OpPrereqError("Can only run replace disks for DRBD8-based"
5262 if len(instance.secondary_nodes) != 1:
5263 raise errors.OpPrereqError("The instance has a strange layout,"
5264 " expected one secondary but found %d" %
5265 len(instance.secondary_nodes))
5267 self.sec_node = instance.secondary_nodes[0]
5269 if self.op.iallocator is not None:
5270 self._RunAllocator()
5272 remote_node = self.op.remote_node
5273 if remote_node is not None:
5274 self.remote_node_info = self.cfg.GetNodeInfo(remote_node)
5275 assert self.remote_node_info is not None, \
5276 "Cannot retrieve locked node %s" % remote_node
5278 self.remote_node_info = None
5279 if remote_node == instance.primary_node:
5280 raise errors.OpPrereqError("The specified node is the primary node of"
5282 elif remote_node == self.sec_node:
5283 raise errors.OpPrereqError("The specified node is already the"
5284 " secondary node of the instance.")
5286 if self.op.mode == constants.REPLACE_DISK_PRI:
5287 n1 = self.tgt_node = instance.primary_node
5288 n2 = self.oth_node = self.sec_node
5289 elif self.op.mode == constants.REPLACE_DISK_SEC:
5290 n1 = self.tgt_node = self.sec_node
5291 n2 = self.oth_node = instance.primary_node
5292 elif self.op.mode == constants.REPLACE_DISK_CHG:
5293 n1 = self.new_node = remote_node
5294 n2 = self.oth_node = instance.primary_node
5295 self.tgt_node = self.sec_node
5296 _CheckNodeNotDrained(self, remote_node)
5298 raise errors.ProgrammerError("Unhandled disk replace mode")
5300 _CheckNodeOnline(self, n1)
5301 _CheckNodeOnline(self, n2)
5303 if not self.op.disks:
5304 self.op.disks = range(len(instance.disks))
5306 for disk_idx in self.op.disks:
5307 instance.FindDisk(disk_idx)
5309 def _ExecD8DiskOnly(self, feedback_fn):
5310 """Replace a disk on the primary or secondary for dbrd8.
5312 The algorithm for replace is quite complicated:
5314 1. for each disk to be replaced:
5316 1. create new LVs on the target node with unique names
5317 1. detach old LVs from the drbd device
5318 1. rename old LVs to name_replaced.<time_t>
5319 1. rename new LVs to old LVs
5320 1. attach the new LVs (with the old names now) to the drbd device
5322 1. wait for sync across all devices
5324 1. for each modified disk:
5326 1. remove old LVs (which have the name name_replaces.<time_t>)
5328 Failures are not very well handled.
5332 warning, info = (self.proc.LogWarning, self.proc.LogInfo)
5333 instance = self.instance
5335 vgname = self.cfg.GetVGName()
5338 tgt_node = self.tgt_node
5339 oth_node = self.oth_node
5341 # Step: check device activation
5342 self.proc.LogStep(1, steps_total, "check device existence")
5343 info("checking volume groups")
5344 my_vg = cfg.GetVGName()
5345 results = self.rpc.call_vg_list([oth_node, tgt_node])
5347 raise errors.OpExecError("Can't list volume groups on the nodes")
5348 for node in oth_node, tgt_node:
5350 if res.failed or not res.data or my_vg not in res.data:
5351 raise errors.OpExecError("Volume group '%s' not found on %s" %
5353 for idx, dev in enumerate(instance.disks):
5354 if idx not in self.op.disks:
5356 for node in tgt_node, oth_node:
5357 info("checking disk/%d on %s" % (idx, node))
5358 cfg.SetDiskID(dev, node)
5359 result = self.rpc.call_blockdev_find(node, dev)
5360 msg = result.RemoteFailMsg()
5361 if not msg and not result.payload:
5362 msg = "disk not found"
5364 raise errors.OpExecError("Can't find disk/%d on node %s: %s" %
5367 # Step: check other node consistency
5368 self.proc.LogStep(2, steps_total, "check peer consistency")
5369 for idx, dev in enumerate(instance.disks):
5370 if idx not in self.op.disks:
5372 info("checking disk/%d consistency on %s" % (idx, oth_node))
5373 if not _CheckDiskConsistency(self, dev, oth_node,
5374 oth_node==instance.primary_node):
5375 raise errors.OpExecError("Peer node (%s) has degraded storage, unsafe"
5376 " to replace disks on this node (%s)" %
5377 (oth_node, tgt_node))
5379 # Step: create new storage
5380 self.proc.LogStep(3, steps_total, "allocate new storage")
5381 for idx, dev in enumerate(instance.disks):
5382 if idx not in self.op.disks:
5385 cfg.SetDiskID(dev, tgt_node)
5386 lv_names = [".disk%d_%s" % (idx, suf)
5387 for suf in ["data", "meta"]]
5388 names = _GenerateUniqueNames(self, lv_names)
5389 lv_data = objects.Disk(dev_type=constants.LD_LV, size=size,
5390 logical_id=(vgname, names[0]))
5391 lv_meta = objects.Disk(dev_type=constants.LD_LV, size=128,
5392 logical_id=(vgname, names[1]))
5393 new_lvs = [lv_data, lv_meta]
5394 old_lvs = dev.children
5395 iv_names[dev.iv_name] = (dev, old_lvs, new_lvs)
5396 info("creating new local storage on %s for %s" %
5397 (tgt_node, dev.iv_name))
5398 # we pass force_create=True to force the LVM creation
5399 for new_lv in new_lvs:
5400 _CreateBlockDev(self, tgt_node, instance, new_lv, True,
5401 _GetInstanceInfoText(instance), False)
5403 # Step: for each lv, detach+rename*2+attach
5404 self.proc.LogStep(4, steps_total, "change drbd configuration")
5405 for dev, old_lvs, new_lvs in iv_names.itervalues():
5406 info("detaching %s drbd from local storage" % dev.iv_name)
5407 result = self.rpc.call_blockdev_removechildren(tgt_node, dev, old_lvs)
5410 raise errors.OpExecError("Can't detach drbd from local storage on node"
5411 " %s for device %s" % (tgt_node, dev.iv_name))
5413 #cfg.Update(instance)
5415 # ok, we created the new LVs, so now we know we have the needed
5416 # storage; as such, we proceed on the target node to rename
5417 # old_lv to _old, and new_lv to old_lv; note that we rename LVs
5418 # using the assumption that logical_id == physical_id (which in
5419 # turn is the unique_id on that node)
5421 # FIXME(iustin): use a better name for the replaced LVs
5422 temp_suffix = int(time.time())
5423 ren_fn = lambda d, suff: (d.physical_id[0],
5424 d.physical_id[1] + "_replaced-%s" % suff)
5425 # build the rename list based on what LVs exist on the node
5427 for to_ren in old_lvs:
5428 result = self.rpc.call_blockdev_find(tgt_node, to_ren)
5429 if not result.RemoteFailMsg() and result.payload:
5431 rlist.append((to_ren, ren_fn(to_ren, temp_suffix)))
5433 info("renaming the old LVs on the target node")
5434 result = self.rpc.call_blockdev_rename(tgt_node, rlist)
5437 raise errors.OpExecError("Can't rename old LVs on node %s" % tgt_node)
5438 # now we rename the new LVs to the old LVs
5439 info("renaming the new LVs on the target node")
5440 rlist = [(new, old.physical_id) for old, new in zip(old_lvs, new_lvs)]
5441 result = self.rpc.call_blockdev_rename(tgt_node, rlist)
5444 raise errors.OpExecError("Can't rename new LVs on node %s" % tgt_node)
5446 for old, new in zip(old_lvs, new_lvs):
5447 new.logical_id = old.logical_id
5448 cfg.SetDiskID(new, tgt_node)
5450 for disk in old_lvs:
5451 disk.logical_id = ren_fn(disk, temp_suffix)
5452 cfg.SetDiskID(disk, tgt_node)
5454 # now that the new lvs have the old name, we can add them to the device
5455 info("adding new mirror component on %s" % tgt_node)
5456 result = self.rpc.call_blockdev_addchildren(tgt_node, dev, new_lvs)
5457 if result.failed or not result.data:
5458 for new_lv in new_lvs:
5459 msg = self.rpc.call_blockdev_remove(tgt_node, new_lv).RemoteFailMsg()
5461 warning("Can't rollback device %s: %s", dev, msg,
5462 hint="cleanup manually the unused logical volumes")
5463 raise errors.OpExecError("Can't add local storage to drbd")
5465 dev.children = new_lvs
5466 cfg.Update(instance)
5468 # Step: wait for sync
5470 # this can fail as the old devices are degraded and _WaitForSync
5471 # does a combined result over all disks, so we don't check its
5473 self.proc.LogStep(5, steps_total, "sync devices")
5474 _WaitForSync(self, instance, unlock=True)
5476 # so check manually all the devices
5477 for name, (dev, old_lvs, new_lvs) in iv_names.iteritems():
5478 cfg.SetDiskID(dev, instance.primary_node)
5479 result = self.rpc.call_blockdev_find(instance.primary_node, dev)
5480 msg = result.RemoteFailMsg()
5481 if not msg and not result.payload:
5482 msg = "disk not found"
5484 raise errors.OpExecError("Can't find DRBD device %s: %s" %
5486 if result.payload[5]:
5487 raise errors.OpExecError("DRBD device %s is degraded!" % name)
5489 # Step: remove old storage
5490 self.proc.LogStep(6, steps_total, "removing old storage")
5491 for name, (dev, old_lvs, new_lvs) in iv_names.iteritems():
5492 info("remove logical volumes for %s" % name)
5494 cfg.SetDiskID(lv, tgt_node)
5495 msg = self.rpc.call_blockdev_remove(tgt_node, lv).RemoteFailMsg()
5497 warning("Can't remove old LV: %s" % msg,
5498 hint="manually remove unused LVs")
5501 def _ExecD8Secondary(self, feedback_fn):
5502 """Replace the secondary node for drbd8.
5504 The algorithm for replace is quite complicated:
5505 - for all disks of the instance:
5506 - create new LVs on the new node with same names
5507 - shutdown the drbd device on the old secondary
5508 - disconnect the drbd network on the primary
5509 - create the drbd device on the new secondary
5510 - network attach the drbd on the primary, using an artifice:
5511 the drbd code for Attach() will connect to the network if it
5512 finds a device which is connected to the good local disks but
5514 - wait for sync across all devices
5515 - remove all disks from the old secondary
5517 Failures are not very well handled.
5521 warning, info = (self.proc.LogWarning, self.proc.LogInfo)
5522 instance = self.instance
5526 old_node = self.tgt_node
5527 new_node = self.new_node
5528 pri_node = instance.primary_node
5530 old_node: self.cfg.GetNodeInfo(old_node).secondary_ip,
5531 new_node: self.cfg.GetNodeInfo(new_node).secondary_ip,
5532 pri_node: self.cfg.GetNodeInfo(pri_node).secondary_ip,
5535 # Step: check device activation
5536 self.proc.LogStep(1, steps_total, "check device existence")
5537 info("checking volume groups")
5538 my_vg = cfg.GetVGName()
5539 results = self.rpc.call_vg_list([pri_node, new_node])
5540 for node in pri_node, new_node:
5542 if res.failed or not res.data or my_vg not in res.data:
5543 raise errors.OpExecError("Volume group '%s' not found on %s" %
5545 for idx, dev in enumerate(instance.disks):
5546 if idx not in self.op.disks:
5548 info("checking disk/%d on %s" % (idx, pri_node))
5549 cfg.SetDiskID(dev, pri_node)
5550 result = self.rpc.call_blockdev_find(pri_node, dev)
5551 msg = result.RemoteFailMsg()
5552 if not msg and not result.payload:
5553 msg = "disk not found"
5555 raise errors.OpExecError("Can't find disk/%d on node %s: %s" %
5556 (idx, pri_node, msg))
5558 # Step: check other node consistency
5559 self.proc.LogStep(2, steps_total, "check peer consistency")
5560 for idx, dev in enumerate(instance.disks):
5561 if idx not in self.op.disks:
5563 info("checking disk/%d consistency on %s" % (idx, pri_node))
5564 if not _CheckDiskConsistency(self, dev, pri_node, True, ldisk=True):
5565 raise errors.OpExecError("Primary node (%s) has degraded storage,"
5566 " unsafe to replace the secondary" %
5569 # Step: create new storage
5570 self.proc.LogStep(3, steps_total, "allocate new storage")
5571 for idx, dev in enumerate(instance.disks):
5572 info("adding new local storage on %s for disk/%d" %
5574 # we pass force_create=True to force LVM creation
5575 for new_lv in dev.children:
5576 _CreateBlockDev(self, new_node, instance, new_lv, True,
5577 _GetInstanceInfoText(instance), False)
5579 # Step 4: dbrd minors and drbd setups changes
5580 # after this, we must manually remove the drbd minors on both the
5581 # error and the success paths
5582 minors = cfg.AllocateDRBDMinor([new_node for dev in instance.disks],
5584 logging.debug("Allocated minors %s" % (minors,))
5585 self.proc.LogStep(4, steps_total, "changing drbd configuration")
5586 for idx, (dev, new_minor) in enumerate(zip(instance.disks, minors)):
5587 info("activating a new drbd on %s for disk/%d" % (new_node, idx))
5588 # create new devices on new_node; note that we create two IDs:
5589 # one without port, so the drbd will be activated without
5590 # networking information on the new node at this stage, and one
5591 # with network, for the latter activation in step 4
5592 (o_node1, o_node2, o_port, o_minor1, o_minor2, o_secret) = dev.logical_id
5593 if pri_node == o_node1:
5598 new_alone_id = (pri_node, new_node, None, p_minor, new_minor, o_secret)
5599 new_net_id = (pri_node, new_node, o_port, p_minor, new_minor, o_secret)
5601 iv_names[idx] = (dev, dev.children, new_net_id)
5602 logging.debug("Allocated new_minor: %s, new_logical_id: %s", new_minor,
5604 new_drbd = objects.Disk(dev_type=constants.LD_DRBD8,
5605 logical_id=new_alone_id,
5606 children=dev.children,
5609 _CreateSingleBlockDev(self, new_node, instance, new_drbd,
5610 _GetInstanceInfoText(instance), False)
5611 except errors.GenericError:
5612 self.cfg.ReleaseDRBDMinors(instance.name)
5615 for idx, dev in enumerate(instance.disks):
5616 # we have new devices, shutdown the drbd on the old secondary
5617 info("shutting down drbd for disk/%d on old node" % idx)
5618 cfg.SetDiskID(dev, old_node)
5619 msg = self.rpc.call_blockdev_shutdown(old_node, dev).RemoteFailMsg()
5621 warning("Failed to shutdown drbd for disk/%d on old node: %s" %
5623 hint="Please cleanup this device manually as soon as possible")
5625 info("detaching primary drbds from the network (=> standalone)")
5626 result = self.rpc.call_drbd_disconnect_net([pri_node], nodes_ip,
5627 instance.disks)[pri_node]
5629 msg = result.RemoteFailMsg()
5631 # detaches didn't succeed (unlikely)
5632 self.cfg.ReleaseDRBDMinors(instance.name)
5633 raise errors.OpExecError("Can't detach the disks from the network on"
5634 " old node: %s" % (msg,))
5636 # if we managed to detach at least one, we update all the disks of
5637 # the instance to point to the new secondary
5638 info("updating instance configuration")
5639 for dev, _, new_logical_id in iv_names.itervalues():
5640 dev.logical_id = new_logical_id
5641 cfg.SetDiskID(dev, pri_node)
5642 cfg.Update(instance)
5644 # and now perform the drbd attach
5645 info("attaching primary drbds to new secondary (standalone => connected)")
5646 result = self.rpc.call_drbd_attach_net([pri_node, new_node], nodes_ip,
5647 instance.disks, instance.name,
5649 for to_node, to_result in result.items():
5650 msg = to_result.RemoteFailMsg()
5652 warning("can't attach drbd disks on node %s: %s", to_node, msg,
5653 hint="please do a gnt-instance info to see the"
5656 # this can fail as the old devices are degraded and _WaitForSync
5657 # does a combined result over all disks, so we don't check its
5659 self.proc.LogStep(5, steps_total, "sync devices")
5660 _WaitForSync(self, instance, unlock=True)
5662 # so check manually all the devices
5663 for idx, (dev, old_lvs, _) in iv_names.iteritems():
5664 cfg.SetDiskID(dev, pri_node)
5665 result = self.rpc.call_blockdev_find(pri_node, dev)
5666 msg = result.RemoteFailMsg()
5667 if not msg and not result.payload:
5668 msg = "disk not found"
5670 raise errors.OpExecError("Can't find DRBD device disk/%d: %s" %
5672 if result.payload[5]:
5673 raise errors.OpExecError("DRBD device disk/%d is degraded!" % idx)
5675 self.proc.LogStep(6, steps_total, "removing old storage")
5676 for idx, (dev, old_lvs, _) in iv_names.iteritems():
5677 info("remove logical volumes for disk/%d" % idx)
5679 cfg.SetDiskID(lv, old_node)
5680 msg = self.rpc.call_blockdev_remove(old_node, lv).RemoteFailMsg()
5682 warning("Can't remove LV on old secondary: %s", msg,
5683 hint="Cleanup stale volumes by hand")
5685 def Exec(self, feedback_fn):
5686 """Execute disk replacement.
5688 This dispatches the disk replacement to the appropriate handler.
5691 instance = self.instance
5693 # Activate the instance disks if we're replacing them on a down instance
5694 if not instance.admin_up:
5695 _StartInstanceDisks(self, instance, True)
5697 if self.op.mode == constants.REPLACE_DISK_CHG:
5698 fn = self._ExecD8Secondary
5700 fn = self._ExecD8DiskOnly
5702 ret = fn(feedback_fn)
5704 # Deactivate the instance disks if we're replacing them on a down instance
5705 if not instance.admin_up:
5706 _SafeShutdownInstanceDisks(self, instance)
5711 class LUGrowDisk(LogicalUnit):
5712 """Grow a disk of an instance.
5716 HTYPE = constants.HTYPE_INSTANCE
5717 _OP_REQP = ["instance_name", "disk", "amount", "wait_for_sync"]
5720 def ExpandNames(self):
5721 self._ExpandAndLockInstance()
5722 self.needed_locks[locking.LEVEL_NODE] = []
5723 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5725 def DeclareLocks(self, level):
5726 if level == locking.LEVEL_NODE:
5727 self._LockInstancesNodes()
5729 def BuildHooksEnv(self):
5732 This runs on the master, the primary and all the secondaries.
5736 "DISK": self.op.disk,
5737 "AMOUNT": self.op.amount,
5739 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
5741 self.cfg.GetMasterNode(),
5742 self.instance.primary_node,
5746 def CheckPrereq(self):
5747 """Check prerequisites.
5749 This checks that the instance is in the cluster.
5752 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5753 assert instance is not None, \
5754 "Cannot retrieve locked instance %s" % self.op.instance_name
5755 nodenames = list(instance.all_nodes)
5756 for node in nodenames:
5757 _CheckNodeOnline(self, node)
5760 self.instance = instance
5762 if instance.disk_template not in (constants.DT_PLAIN, constants.DT_DRBD8):
5763 raise errors.OpPrereqError("Instance's disk layout does not support"
5766 self.disk = instance.FindDisk(self.op.disk)
5768 nodeinfo = self.rpc.call_node_info(nodenames, self.cfg.GetVGName(),
5769 instance.hypervisor)
5770 for node in nodenames:
5771 info = nodeinfo[node]
5772 if info.failed or not info.data:
5773 raise errors.OpPrereqError("Cannot get current information"
5774 " from node '%s'" % node)
5775 vg_free = info.data.get('vg_free', None)
5776 if not isinstance(vg_free, int):
5777 raise errors.OpPrereqError("Can't compute free disk space on"
5779 if self.op.amount > vg_free:
5780 raise errors.OpPrereqError("Not enough disk space on target node %s:"
5781 " %d MiB available, %d MiB required" %
5782 (node, vg_free, self.op.amount))
5784 def Exec(self, feedback_fn):
5785 """Execute disk grow.
5788 instance = self.instance
5790 for node in instance.all_nodes:
5791 self.cfg.SetDiskID(disk, node)
5792 result = self.rpc.call_blockdev_grow(node, disk, self.op.amount)
5793 msg = result.RemoteFailMsg()
5795 raise errors.OpExecError("Grow request failed to node %s: %s" %
5797 disk.RecordGrow(self.op.amount)
5798 self.cfg.Update(instance)
5799 if self.op.wait_for_sync:
5800 disk_abort = not _WaitForSync(self, instance)
5802 self.proc.LogWarning("Warning: disk sync-ing has not returned a good"
5803 " status.\nPlease check the instance.")
5806 class LUQueryInstanceData(NoHooksLU):
5807 """Query runtime instance data.
5810 _OP_REQP = ["instances", "static"]
5813 def ExpandNames(self):
5814 self.needed_locks = {}
5815 self.share_locks = dict(((i, 1) for i in locking.LEVELS))
5817 if not isinstance(self.op.instances, list):
5818 raise errors.OpPrereqError("Invalid argument type 'instances'")
5820 if self.op.instances:
5821 self.wanted_names = []
5822 for name in self.op.instances:
5823 full_name = self.cfg.ExpandInstanceName(name)
5824 if full_name is None:
5825 raise errors.OpPrereqError("Instance '%s' not known" % name)
5826 self.wanted_names.append(full_name)
5827 self.needed_locks[locking.LEVEL_INSTANCE] = self.wanted_names
5829 self.wanted_names = None
5830 self.needed_locks[locking.LEVEL_INSTANCE] = locking.ALL_SET
5832 self.needed_locks[locking.LEVEL_NODE] = []
5833 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5835 def DeclareLocks(self, level):
5836 if level == locking.LEVEL_NODE:
5837 self._LockInstancesNodes()
5839 def CheckPrereq(self):
5840 """Check prerequisites.
5842 This only checks the optional instance list against the existing names.
5845 if self.wanted_names is None:
5846 self.wanted_names = self.acquired_locks[locking.LEVEL_INSTANCE]
5848 self.wanted_instances = [self.cfg.GetInstanceInfo(name) for name
5849 in self.wanted_names]
5852 def _ComputeDiskStatus(self, instance, snode, dev):
5853 """Compute block device status.
5856 static = self.op.static
5858 self.cfg.SetDiskID(dev, instance.primary_node)
5859 dev_pstatus = self.rpc.call_blockdev_find(instance.primary_node, dev)
5860 if dev_pstatus.offline:
5863 msg = dev_pstatus.RemoteFailMsg()
5865 raise errors.OpExecError("Can't compute disk status for %s: %s" %
5866 (instance.name, msg))
5867 dev_pstatus = dev_pstatus.payload
5871 if dev.dev_type in constants.LDS_DRBD:
5872 # we change the snode then (otherwise we use the one passed in)
5873 if dev.logical_id[0] == instance.primary_node:
5874 snode = dev.logical_id[1]
5876 snode = dev.logical_id[0]
5878 if snode and not static:
5879 self.cfg.SetDiskID(dev, snode)
5880 dev_sstatus = self.rpc.call_blockdev_find(snode, dev)
5881 if dev_sstatus.offline:
5884 msg = dev_sstatus.RemoteFailMsg()
5886 raise errors.OpExecError("Can't compute disk status for %s: %s" %
5887 (instance.name, msg))
5888 dev_sstatus = dev_sstatus.payload
5893 dev_children = [self._ComputeDiskStatus(instance, snode, child)
5894 for child in dev.children]
5899 "iv_name": dev.iv_name,
5900 "dev_type": dev.dev_type,
5901 "logical_id": dev.logical_id,
5902 "physical_id": dev.physical_id,
5903 "pstatus": dev_pstatus,
5904 "sstatus": dev_sstatus,
5905 "children": dev_children,
5912 def Exec(self, feedback_fn):
5913 """Gather and return data"""
5916 cluster = self.cfg.GetClusterInfo()
5918 for instance in self.wanted_instances:
5919 if not self.op.static:
5920 remote_info = self.rpc.call_instance_info(instance.primary_node,
5922 instance.hypervisor)
5924 remote_info = remote_info.data
5925 if remote_info and "state" in remote_info:
5928 remote_state = "down"
5931 if instance.admin_up:
5934 config_state = "down"
5936 disks = [self._ComputeDiskStatus(instance, None, device)
5937 for device in instance.disks]
5940 "name": instance.name,
5941 "config_state": config_state,
5942 "run_state": remote_state,
5943 "pnode": instance.primary_node,
5944 "snodes": instance.secondary_nodes,
5946 "nics": [(nic.mac, nic.ip, nic.bridge) for nic in instance.nics],
5948 "hypervisor": instance.hypervisor,
5949 "network_port": instance.network_port,
5950 "hv_instance": instance.hvparams,
5951 "hv_actual": cluster.FillHV(instance),
5952 "be_instance": instance.beparams,
5953 "be_actual": cluster.FillBE(instance),
5956 result[instance.name] = idict
5961 class LUSetInstanceParams(LogicalUnit):
5962 """Modifies an instances's parameters.
5965 HPATH = "instance-modify"
5966 HTYPE = constants.HTYPE_INSTANCE
5967 _OP_REQP = ["instance_name"]
5970 def CheckArguments(self):
5971 if not hasattr(self.op, 'nics'):
5973 if not hasattr(self.op, 'disks'):
5975 if not hasattr(self.op, 'beparams'):
5976 self.op.beparams = {}
5977 if not hasattr(self.op, 'hvparams'):
5978 self.op.hvparams = {}
5979 self.op.force = getattr(self.op, "force", False)
5980 if not (self.op.nics or self.op.disks or
5981 self.op.hvparams or self.op.beparams):
5982 raise errors.OpPrereqError("No changes submitted")
5986 for disk_op, disk_dict in self.op.disks:
5987 if disk_op == constants.DDM_REMOVE:
5990 elif disk_op == constants.DDM_ADD:
5993 if not isinstance(disk_op, int):
5994 raise errors.OpPrereqError("Invalid disk index")
5995 if disk_op == constants.DDM_ADD:
5996 mode = disk_dict.setdefault('mode', constants.DISK_RDWR)
5997 if mode not in constants.DISK_ACCESS_SET:
5998 raise errors.OpPrereqError("Invalid disk access mode '%s'" % mode)
5999 size = disk_dict.get('size', None)
6001 raise errors.OpPrereqError("Required disk parameter size missing")
6004 except ValueError, err:
6005 raise errors.OpPrereqError("Invalid disk size parameter: %s" %
6007 disk_dict['size'] = size
6009 # modification of disk
6010 if 'size' in disk_dict:
6011 raise errors.OpPrereqError("Disk size change not possible, use"
6014 if disk_addremove > 1:
6015 raise errors.OpPrereqError("Only one disk add or remove operation"
6016 " supported at a time")
6020 for nic_op, nic_dict in self.op.nics:
6021 if nic_op == constants.DDM_REMOVE:
6024 elif nic_op == constants.DDM_ADD:
6027 if not isinstance(nic_op, int):
6028 raise errors.OpPrereqError("Invalid nic index")
6030 # nic_dict should be a dict
6031 nic_ip = nic_dict.get('ip', None)
6032 if nic_ip is not None:
6033 if nic_ip.lower() == constants.VALUE_NONE:
6034 nic_dict['ip'] = None
6036 if not utils.IsValidIP(nic_ip):
6037 raise errors.OpPrereqError("Invalid IP address '%s'" % nic_ip)
6039 if nic_op == constants.DDM_ADD:
6040 nic_bridge = nic_dict.get('bridge', None)
6041 if nic_bridge is None:
6042 nic_dict['bridge'] = self.cfg.GetDefBridge()
6043 nic_mac = nic_dict.get('mac', None)
6045 nic_dict['mac'] = constants.VALUE_AUTO
6047 if 'mac' in nic_dict:
6048 nic_mac = nic_dict['mac']
6049 if nic_mac not in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
6050 if not utils.IsValidMac(nic_mac):
6051 raise errors.OpPrereqError("Invalid MAC address %s" % nic_mac)
6052 if nic_op != constants.DDM_ADD and nic_mac == constants.VALUE_AUTO:
6053 raise errors.OpPrereqError("'auto' is not a valid MAC address when"
6054 " modifying an existing nic")
6056 if nic_addremove > 1:
6057 raise errors.OpPrereqError("Only one NIC add or remove operation"
6058 " supported at a time")
6060 def ExpandNames(self):
6061 self._ExpandAndLockInstance()
6062 self.needed_locks[locking.LEVEL_NODE] = []
6063 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
6065 def DeclareLocks(self, level):
6066 if level == locking.LEVEL_NODE:
6067 self._LockInstancesNodes()
6069 def BuildHooksEnv(self):
6072 This runs on the master, primary and secondaries.
6076 if constants.BE_MEMORY in self.be_new:
6077 args['memory'] = self.be_new[constants.BE_MEMORY]
6078 if constants.BE_VCPUS in self.be_new:
6079 args['vcpus'] = self.be_new[constants.BE_VCPUS]
6080 # TODO: export disk changes. Note: _BuildInstanceHookEnv* don't export disk
6081 # information at all.
6084 nic_override = dict(self.op.nics)
6085 for idx, nic in enumerate(self.instance.nics):
6086 if idx in nic_override:
6087 this_nic_override = nic_override[idx]
6089 this_nic_override = {}
6090 if 'ip' in this_nic_override:
6091 ip = this_nic_override['ip']
6094 if 'bridge' in this_nic_override:
6095 bridge = this_nic_override['bridge']
6098 if 'mac' in this_nic_override:
6099 mac = this_nic_override['mac']
6102 args['nics'].append((ip, bridge, mac))
6103 if constants.DDM_ADD in nic_override:
6104 ip = nic_override[constants.DDM_ADD].get('ip', None)
6105 bridge = nic_override[constants.DDM_ADD]['bridge']
6106 mac = nic_override[constants.DDM_ADD]['mac']
6107 args['nics'].append((ip, bridge, mac))
6108 elif constants.DDM_REMOVE in nic_override:
6109 del args['nics'][-1]
6111 env = _BuildInstanceHookEnvByObject(self, self.instance, override=args)
6112 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
6115 def CheckPrereq(self):
6116 """Check prerequisites.
6118 This only checks the instance list against the existing names.
6121 self.force = self.op.force
6123 # checking the new params on the primary/secondary nodes
6125 instance = self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
6126 assert self.instance is not None, \
6127 "Cannot retrieve locked instance %s" % self.op.instance_name
6128 pnode = instance.primary_node
6129 nodelist = list(instance.all_nodes)
6131 # hvparams processing
6132 if self.op.hvparams:
6133 i_hvdict = copy.deepcopy(instance.hvparams)
6134 for key, val in self.op.hvparams.iteritems():
6135 if val == constants.VALUE_DEFAULT:
6142 cluster = self.cfg.GetClusterInfo()
6143 utils.ForceDictType(i_hvdict, constants.HVS_PARAMETER_TYPES)
6144 hv_new = cluster.FillDict(cluster.hvparams[instance.hypervisor],
6147 hypervisor.GetHypervisor(
6148 instance.hypervisor).CheckParameterSyntax(hv_new)
6149 _CheckHVParams(self, nodelist, instance.hypervisor, hv_new)
6150 self.hv_new = hv_new # the new actual values
6151 self.hv_inst = i_hvdict # the new dict (without defaults)
6153 self.hv_new = self.hv_inst = {}
6155 # beparams processing
6156 if self.op.beparams:
6157 i_bedict = copy.deepcopy(instance.beparams)
6158 for key, val in self.op.beparams.iteritems():
6159 if val == constants.VALUE_DEFAULT:
6166 cluster = self.cfg.GetClusterInfo()
6167 utils.ForceDictType(i_bedict, constants.BES_PARAMETER_TYPES)
6168 be_new = cluster.FillDict(cluster.beparams[constants.BEGR_DEFAULT],
6170 self.be_new = be_new # the new actual values
6171 self.be_inst = i_bedict # the new dict (without defaults)
6173 self.be_new = self.be_inst = {}
6177 if constants.BE_MEMORY in self.op.beparams and not self.force:
6178 mem_check_list = [pnode]
6179 if be_new[constants.BE_AUTO_BALANCE]:
6180 # either we changed auto_balance to yes or it was from before
6181 mem_check_list.extend(instance.secondary_nodes)
6182 instance_info = self.rpc.call_instance_info(pnode, instance.name,
6183 instance.hypervisor)
6184 nodeinfo = self.rpc.call_node_info(mem_check_list, self.cfg.GetVGName(),
6185 instance.hypervisor)
6186 if nodeinfo[pnode].failed or not isinstance(nodeinfo[pnode].data, dict):
6187 # Assume the primary node is unreachable and go ahead
6188 self.warn.append("Can't get info from primary node %s" % pnode)
6190 if not instance_info.failed and instance_info.data:
6191 current_mem = int(instance_info.data['memory'])
6193 # Assume instance not running
6194 # (there is a slight race condition here, but it's not very probable,
6195 # and we have no other way to check)
6197 miss_mem = (be_new[constants.BE_MEMORY] - current_mem -
6198 nodeinfo[pnode].data['memory_free'])
6200 raise errors.OpPrereqError("This change will prevent the instance"
6201 " from starting, due to %d MB of memory"
6202 " missing on its primary node" % miss_mem)
6204 if be_new[constants.BE_AUTO_BALANCE]:
6205 for node, nres in nodeinfo.iteritems():
6206 if node not in instance.secondary_nodes:
6208 if nres.failed or not isinstance(nres.data, dict):
6209 self.warn.append("Can't get info from secondary node %s" % node)
6210 elif be_new[constants.BE_MEMORY] > nres.data['memory_free']:
6211 self.warn.append("Not enough memory to failover instance to"
6212 " secondary node %s" % node)
6215 for nic_op, nic_dict in self.op.nics:
6216 if nic_op == constants.DDM_REMOVE:
6217 if not instance.nics:
6218 raise errors.OpPrereqError("Instance has no NICs, cannot remove")
6220 if nic_op != constants.DDM_ADD:
6222 if nic_op < 0 or nic_op >= len(instance.nics):
6223 raise errors.OpPrereqError("Invalid NIC index %s, valid values"
6225 (nic_op, len(instance.nics)))
6226 if 'bridge' in nic_dict:
6227 nic_bridge = nic_dict['bridge']
6228 if nic_bridge is None:
6229 raise errors.OpPrereqError('Cannot set the nic bridge to None')
6230 if not self.rpc.call_bridges_exist(pnode, [nic_bridge]):
6231 msg = ("Bridge '%s' doesn't exist on one of"
6232 " the instance nodes" % nic_bridge)
6234 self.warn.append(msg)
6236 raise errors.OpPrereqError(msg)
6237 if 'mac' in nic_dict:
6238 nic_mac = nic_dict['mac']
6240 raise errors.OpPrereqError('Cannot set the nic mac to None')
6241 elif nic_mac in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
6242 # otherwise generate the mac
6243 nic_dict['mac'] = self.cfg.GenerateMAC()
6245 # or validate/reserve the current one
6246 if self.cfg.IsMacInUse(nic_mac):
6247 raise errors.OpPrereqError("MAC address %s already in use"
6248 " in cluster" % nic_mac)
6251 if self.op.disks and instance.disk_template == constants.DT_DISKLESS:
6252 raise errors.OpPrereqError("Disk operations not supported for"
6253 " diskless instances")
6254 for disk_op, disk_dict in self.op.disks:
6255 if disk_op == constants.DDM_REMOVE:
6256 if len(instance.disks) == 1:
6257 raise errors.OpPrereqError("Cannot remove the last disk of"
6259 ins_l = self.rpc.call_instance_list([pnode], [instance.hypervisor])
6260 ins_l = ins_l[pnode]
6261 if ins_l.failed or not isinstance(ins_l.data, list):
6262 raise errors.OpPrereqError("Can't contact node '%s'" % pnode)
6263 if instance.name in ins_l.data:
6264 raise errors.OpPrereqError("Instance is running, can't remove"
6267 if (disk_op == constants.DDM_ADD and
6268 len(instance.nics) >= constants.MAX_DISKS):
6269 raise errors.OpPrereqError("Instance has too many disks (%d), cannot"
6270 " add more" % constants.MAX_DISKS)
6271 if disk_op not in (constants.DDM_ADD, constants.DDM_REMOVE):
6273 if disk_op < 0 or disk_op >= len(instance.disks):
6274 raise errors.OpPrereqError("Invalid disk index %s, valid values"
6276 (disk_op, len(instance.disks)))
6280 def Exec(self, feedback_fn):
6281 """Modifies an instance.
6283 All parameters take effect only at the next restart of the instance.
6286 # Process here the warnings from CheckPrereq, as we don't have a
6287 # feedback_fn there.
6288 for warn in self.warn:
6289 feedback_fn("WARNING: %s" % warn)
6292 instance = self.instance
6294 for disk_op, disk_dict in self.op.disks:
6295 if disk_op == constants.DDM_REMOVE:
6296 # remove the last disk
6297 device = instance.disks.pop()
6298 device_idx = len(instance.disks)
6299 for node, disk in device.ComputeNodeTree(instance.primary_node):
6300 self.cfg.SetDiskID(disk, node)
6301 msg = self.rpc.call_blockdev_remove(node, disk).RemoteFailMsg()
6303 self.LogWarning("Could not remove disk/%d on node %s: %s,"
6304 " continuing anyway", device_idx, node, msg)
6305 result.append(("disk/%d" % device_idx, "remove"))
6306 elif disk_op == constants.DDM_ADD:
6308 if instance.disk_template == constants.DT_FILE:
6309 file_driver, file_path = instance.disks[0].logical_id
6310 file_path = os.path.dirname(file_path)
6312 file_driver = file_path = None
6313 disk_idx_base = len(instance.disks)
6314 new_disk = _GenerateDiskTemplate(self,
6315 instance.disk_template,
6316 instance.name, instance.primary_node,
6317 instance.secondary_nodes,
6322 instance.disks.append(new_disk)
6323 info = _GetInstanceInfoText(instance)
6325 logging.info("Creating volume %s for instance %s",
6326 new_disk.iv_name, instance.name)
6327 # Note: this needs to be kept in sync with _CreateDisks
6329 for node in instance.all_nodes:
6330 f_create = node == instance.primary_node
6332 _CreateBlockDev(self, node, instance, new_disk,
6333 f_create, info, f_create)
6334 except errors.OpExecError, err:
6335 self.LogWarning("Failed to create volume %s (%s) on"
6337 new_disk.iv_name, new_disk, node, err)
6338 result.append(("disk/%d" % disk_idx_base, "add:size=%s,mode=%s" %
6339 (new_disk.size, new_disk.mode)))
6341 # change a given disk
6342 instance.disks[disk_op].mode = disk_dict['mode']
6343 result.append(("disk.mode/%d" % disk_op, disk_dict['mode']))
6345 for nic_op, nic_dict in self.op.nics:
6346 if nic_op == constants.DDM_REMOVE:
6347 # remove the last nic
6348 del instance.nics[-1]
6349 result.append(("nic.%d" % len(instance.nics), "remove"))
6350 elif nic_op == constants.DDM_ADD:
6351 # mac and bridge should be set, by now
6352 mac = nic_dict['mac']
6353 bridge = nic_dict['bridge']
6354 new_nic = objects.NIC(mac=mac, ip=nic_dict.get('ip', None),
6356 instance.nics.append(new_nic)
6357 result.append(("nic.%d" % (len(instance.nics) - 1),
6358 "add:mac=%s,ip=%s,bridge=%s" %
6359 (new_nic.mac, new_nic.ip, new_nic.bridge)))
6361 # change a given nic
6362 for key in 'mac', 'ip', 'bridge':
6364 setattr(instance.nics[nic_op], key, nic_dict[key])
6365 result.append(("nic.%s/%d" % (key, nic_op), nic_dict[key]))
6368 if self.op.hvparams:
6369 instance.hvparams = self.hv_inst
6370 for key, val in self.op.hvparams.iteritems():
6371 result.append(("hv/%s" % key, val))
6374 if self.op.beparams:
6375 instance.beparams = self.be_inst
6376 for key, val in self.op.beparams.iteritems():
6377 result.append(("be/%s" % key, val))
6379 self.cfg.Update(instance)
6384 class LUQueryExports(NoHooksLU):
6385 """Query the exports list
6388 _OP_REQP = ['nodes']
6391 def ExpandNames(self):
6392 self.needed_locks = {}
6393 self.share_locks[locking.LEVEL_NODE] = 1
6394 if not self.op.nodes:
6395 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
6397 self.needed_locks[locking.LEVEL_NODE] = \
6398 _GetWantedNodes(self, self.op.nodes)
6400 def CheckPrereq(self):
6401 """Check prerequisites.
6404 self.nodes = self.acquired_locks[locking.LEVEL_NODE]
6406 def Exec(self, feedback_fn):
6407 """Compute the list of all the exported system images.
6410 @return: a dictionary with the structure node->(export-list)
6411 where export-list is a list of the instances exported on
6415 rpcresult = self.rpc.call_export_list(self.nodes)
6417 for node in rpcresult:
6418 if rpcresult[node].failed:
6419 result[node] = False
6421 result[node] = rpcresult[node].data
6426 class LUExportInstance(LogicalUnit):
6427 """Export an instance to an image in the cluster.
6430 HPATH = "instance-export"
6431 HTYPE = constants.HTYPE_INSTANCE
6432 _OP_REQP = ["instance_name", "target_node", "shutdown"]
6435 def ExpandNames(self):
6436 self._ExpandAndLockInstance()
6437 # FIXME: lock only instance primary and destination node
6439 # Sad but true, for now we have do lock all nodes, as we don't know where
6440 # the previous export might be, and and in this LU we search for it and
6441 # remove it from its current node. In the future we could fix this by:
6442 # - making a tasklet to search (share-lock all), then create the new one,
6443 # then one to remove, after
6444 # - removing the removal operation altogether
6445 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
6447 def DeclareLocks(self, level):
6448 """Last minute lock declaration."""
6449 # All nodes are locked anyway, so nothing to do here.
6451 def BuildHooksEnv(self):
6454 This will run on the master, primary node and target node.
6458 "EXPORT_NODE": self.op.target_node,
6459 "EXPORT_DO_SHUTDOWN": self.op.shutdown,
6461 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
6462 nl = [self.cfg.GetMasterNode(), self.instance.primary_node,
6463 self.op.target_node]
6466 def CheckPrereq(self):
6467 """Check prerequisites.
6469 This checks that the instance and node names are valid.
6472 instance_name = self.op.instance_name
6473 self.instance = self.cfg.GetInstanceInfo(instance_name)
6474 assert self.instance is not None, \
6475 "Cannot retrieve locked instance %s" % self.op.instance_name
6476 _CheckNodeOnline(self, self.instance.primary_node)
6478 self.dst_node = self.cfg.GetNodeInfo(
6479 self.cfg.ExpandNodeName(self.op.target_node))
6481 if self.dst_node is None:
6482 # This is wrong node name, not a non-locked node
6483 raise errors.OpPrereqError("Wrong node name %s" % self.op.target_node)
6484 _CheckNodeOnline(self, self.dst_node.name)
6485 _CheckNodeNotDrained(self, self.dst_node.name)
6487 # instance disk type verification
6488 for disk in self.instance.disks:
6489 if disk.dev_type == constants.LD_FILE:
6490 raise errors.OpPrereqError("Export not supported for instances with"
6491 " file-based disks")
6493 def Exec(self, feedback_fn):
6494 """Export an instance to an image in the cluster.
6497 instance = self.instance
6498 dst_node = self.dst_node
6499 src_node = instance.primary_node
6500 if self.op.shutdown:
6501 # shutdown the instance, but not the disks
6502 result = self.rpc.call_instance_shutdown(src_node, instance)
6503 msg = result.RemoteFailMsg()
6505 raise errors.OpExecError("Could not shutdown instance %s on"
6507 (instance.name, src_node, msg))
6509 vgname = self.cfg.GetVGName()
6513 # set the disks ID correctly since call_instance_start needs the
6514 # correct drbd minor to create the symlinks
6515 for disk in instance.disks:
6516 self.cfg.SetDiskID(disk, src_node)
6521 for idx, disk in enumerate(instance.disks):
6522 # new_dev_name will be a snapshot of an lvm leaf of the one we passed
6523 new_dev_name = self.rpc.call_blockdev_snapshot(src_node, disk)
6524 if new_dev_name.failed or not new_dev_name.data:
6525 self.LogWarning("Could not snapshot disk/%d on node %s",
6527 snap_disks.append(False)
6529 new_dev = objects.Disk(dev_type=constants.LD_LV, size=disk.size,
6530 logical_id=(vgname, new_dev_name.data),
6531 physical_id=(vgname, new_dev_name.data),
6532 iv_name=disk.iv_name)
6533 snap_disks.append(new_dev)
6536 if self.op.shutdown and instance.admin_up:
6537 result = self.rpc.call_instance_start(src_node, instance, None, None)
6538 msg = result.RemoteFailMsg()
6540 _ShutdownInstanceDisks(self, instance)
6541 raise errors.OpExecError("Could not start instance: %s" % msg)
6543 # TODO: check for size
6545 cluster_name = self.cfg.GetClusterName()
6546 for idx, dev in enumerate(snap_disks):
6548 result = self.rpc.call_snapshot_export(src_node, dev, dst_node.name,
6549 instance, cluster_name, idx)
6550 if result.failed or not result.data:
6551 self.LogWarning("Could not export disk/%d from node %s to"
6552 " node %s", idx, src_node, dst_node.name)
6553 dresults.append(False)
6555 dresults.append(True)
6556 msg = self.rpc.call_blockdev_remove(src_node, dev).RemoteFailMsg()
6558 self.LogWarning("Could not remove snapshot for disk/%d from node"
6559 " %s: %s", idx, src_node, msg)
6561 dresults.append(False)
6563 result = self.rpc.call_finalize_export(dst_node.name, instance, snap_disks)
6565 if result.failed or not result.data:
6566 self.LogWarning("Could not finalize export for instance %s on node %s",
6567 instance.name, dst_node.name)
6570 nodelist = self.cfg.GetNodeList()
6571 nodelist.remove(dst_node.name)
6573 # on one-node clusters nodelist will be empty after the removal
6574 # if we proceed the backup would be removed because OpQueryExports
6575 # substitutes an empty list with the full cluster node list.
6577 exportlist = self.rpc.call_export_list(nodelist)
6578 for node in exportlist:
6579 if exportlist[node].failed:
6581 if instance.name in exportlist[node].data:
6582 if not self.rpc.call_export_remove(node, instance.name):
6583 self.LogWarning("Could not remove older export for instance %s"
6584 " on node %s", instance.name, node)
6585 return fin_resu, dresults
6588 class LURemoveExport(NoHooksLU):
6589 """Remove exports related to the named instance.
6592 _OP_REQP = ["instance_name"]
6595 def ExpandNames(self):
6596 self.needed_locks = {}
6597 # We need all nodes to be locked in order for RemoveExport to work, but we
6598 # don't need to lock the instance itself, as nothing will happen to it (and
6599 # we can remove exports also for a removed instance)
6600 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
6602 def CheckPrereq(self):
6603 """Check prerequisites.
6607 def Exec(self, feedback_fn):
6608 """Remove any export.
6611 instance_name = self.cfg.ExpandInstanceName(self.op.instance_name)
6612 # If the instance was not found we'll try with the name that was passed in.
6613 # This will only work if it was an FQDN, though.
6615 if not instance_name:
6617 instance_name = self.op.instance_name
6619 exportlist = self.rpc.call_export_list(self.acquired_locks[
6620 locking.LEVEL_NODE])
6622 for node in exportlist:
6623 if exportlist[node].failed:
6624 self.LogWarning("Failed to query node %s, continuing" % node)
6626 if instance_name in exportlist[node].data:
6628 result = self.rpc.call_export_remove(node, instance_name)
6629 if result.failed or not result.data:
6630 logging.error("Could not remove export for instance %s"
6631 " on node %s", instance_name, node)
6633 if fqdn_warn and not found:
6634 feedback_fn("Export not found. If trying to remove an export belonging"
6635 " to a deleted instance please use its Fully Qualified"
6639 class TagsLU(NoHooksLU): # pylint: disable-msg=W0223
6642 This is an abstract class which is the parent of all the other tags LUs.
6646 def ExpandNames(self):
6647 self.needed_locks = {}
6648 if self.op.kind == constants.TAG_NODE:
6649 name = self.cfg.ExpandNodeName(self.op.name)
6651 raise errors.OpPrereqError("Invalid node name (%s)" %
6654 self.needed_locks[locking.LEVEL_NODE] = name
6655 elif self.op.kind == constants.TAG_INSTANCE:
6656 name = self.cfg.ExpandInstanceName(self.op.name)
6658 raise errors.OpPrereqError("Invalid instance name (%s)" %
6661 self.needed_locks[locking.LEVEL_INSTANCE] = name
6663 def CheckPrereq(self):
6664 """Check prerequisites.
6667 if self.op.kind == constants.TAG_CLUSTER:
6668 self.target = self.cfg.GetClusterInfo()
6669 elif self.op.kind == constants.TAG_NODE:
6670 self.target = self.cfg.GetNodeInfo(self.op.name)
6671 elif self.op.kind == constants.TAG_INSTANCE:
6672 self.target = self.cfg.GetInstanceInfo(self.op.name)
6674 raise errors.OpPrereqError("Wrong tag type requested (%s)" %
6678 class LUGetTags(TagsLU):
6679 """Returns the tags of a given object.
6682 _OP_REQP = ["kind", "name"]
6685 def Exec(self, feedback_fn):
6686 """Returns the tag list.
6689 return list(self.target.GetTags())
6692 class LUSearchTags(NoHooksLU):
6693 """Searches the tags for a given pattern.
6696 _OP_REQP = ["pattern"]
6699 def ExpandNames(self):
6700 self.needed_locks = {}
6702 def CheckPrereq(self):
6703 """Check prerequisites.
6705 This checks the pattern passed for validity by compiling it.
6709 self.re = re.compile(self.op.pattern)
6710 except re.error, err:
6711 raise errors.OpPrereqError("Invalid search pattern '%s': %s" %
6712 (self.op.pattern, err))
6714 def Exec(self, feedback_fn):
6715 """Returns the tag list.
6719 tgts = [("/cluster", cfg.GetClusterInfo())]
6720 ilist = cfg.GetAllInstancesInfo().values()
6721 tgts.extend([("/instances/%s" % i.name, i) for i in ilist])
6722 nlist = cfg.GetAllNodesInfo().values()
6723 tgts.extend([("/nodes/%s" % n.name, n) for n in nlist])
6725 for path, target in tgts:
6726 for tag in target.GetTags():
6727 if self.re.search(tag):
6728 results.append((path, tag))
6732 class LUAddTags(TagsLU):
6733 """Sets a tag on a given object.
6736 _OP_REQP = ["kind", "name", "tags"]
6739 def CheckPrereq(self):
6740 """Check prerequisites.
6742 This checks the type and length of the tag name and value.
6745 TagsLU.CheckPrereq(self)
6746 for tag in self.op.tags:
6747 objects.TaggableObject.ValidateTag(tag)
6749 def Exec(self, feedback_fn):
6754 for tag in self.op.tags:
6755 self.target.AddTag(tag)
6756 except errors.TagError, err:
6757 raise errors.OpExecError("Error while setting tag: %s" % str(err))
6759 self.cfg.Update(self.target)
6760 except errors.ConfigurationError:
6761 raise errors.OpRetryError("There has been a modification to the"
6762 " config file and the operation has been"
6763 " aborted. Please retry.")
6766 class LUDelTags(TagsLU):
6767 """Delete a list of tags from a given object.
6770 _OP_REQP = ["kind", "name", "tags"]
6773 def CheckPrereq(self):
6774 """Check prerequisites.
6776 This checks that we have the given tag.
6779 TagsLU.CheckPrereq(self)
6780 for tag in self.op.tags:
6781 objects.TaggableObject.ValidateTag(tag)
6782 del_tags = frozenset(self.op.tags)
6783 cur_tags = self.target.GetTags()
6784 if not del_tags <= cur_tags:
6785 diff_tags = del_tags - cur_tags
6786 diff_names = ["'%s'" % tag for tag in diff_tags]
6788 raise errors.OpPrereqError("Tag(s) %s not found" %
6789 (",".join(diff_names)))
6791 def Exec(self, feedback_fn):
6792 """Remove the tag from the object.
6795 for tag in self.op.tags:
6796 self.target.RemoveTag(tag)
6798 self.cfg.Update(self.target)
6799 except errors.ConfigurationError:
6800 raise errors.OpRetryError("There has been a modification to the"
6801 " config file and the operation has been"
6802 " aborted. Please retry.")
6805 class LUTestDelay(NoHooksLU):
6806 """Sleep for a specified amount of time.
6808 This LU sleeps on the master and/or nodes for a specified amount of
6812 _OP_REQP = ["duration", "on_master", "on_nodes"]
6815 def ExpandNames(self):
6816 """Expand names and set required locks.
6818 This expands the node list, if any.
6821 self.needed_locks = {}
6822 if self.op.on_nodes:
6823 # _GetWantedNodes can be used here, but is not always appropriate to use
6824 # this way in ExpandNames. Check LogicalUnit.ExpandNames docstring for
6826 self.op.on_nodes = _GetWantedNodes(self, self.op.on_nodes)
6827 self.needed_locks[locking.LEVEL_NODE] = self.op.on_nodes
6829 def CheckPrereq(self):
6830 """Check prerequisites.
6834 def Exec(self, feedback_fn):
6835 """Do the actual sleep.
6838 if self.op.on_master:
6839 if not utils.TestDelay(self.op.duration):
6840 raise errors.OpExecError("Error during master delay test")
6841 if self.op.on_nodes:
6842 result = self.rpc.call_test_delay(self.op.on_nodes, self.op.duration)
6844 raise errors.OpExecError("Complete failure from rpc call")
6845 for node, node_result in result.items():
6847 if not node_result.data:
6848 raise errors.OpExecError("Failure during rpc call to node %s,"
6849 " result: %s" % (node, node_result.data))
6852 class IAllocator(object):
6853 """IAllocator framework.
6855 An IAllocator instance has three sets of attributes:
6856 - cfg that is needed to query the cluster
6857 - input data (all members of the _KEYS class attribute are required)
6858 - four buffer attributes (in|out_data|text), that represent the
6859 input (to the external script) in text and data structure format,
6860 and the output from it, again in two formats
6861 - the result variables from the script (success, info, nodes) for
6866 "mem_size", "disks", "disk_template",
6867 "os", "tags", "nics", "vcpus", "hypervisor",
6873 def __init__(self, lu, mode, name, **kwargs):
6875 # init buffer variables
6876 self.in_text = self.out_text = self.in_data = self.out_data = None
6877 # init all input fields so that pylint is happy
6880 self.mem_size = self.disks = self.disk_template = None
6881 self.os = self.tags = self.nics = self.vcpus = None
6882 self.hypervisor = None
6883 self.relocate_from = None
6885 self.required_nodes = None
6886 # init result fields
6887 self.success = self.info = self.nodes = None
6888 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
6889 keyset = self._ALLO_KEYS
6890 elif self.mode == constants.IALLOCATOR_MODE_RELOC:
6891 keyset = self._RELO_KEYS
6893 raise errors.ProgrammerError("Unknown mode '%s' passed to the"
6894 " IAllocator" % self.mode)
6896 if key not in keyset:
6897 raise errors.ProgrammerError("Invalid input parameter '%s' to"
6898 " IAllocator" % key)
6899 setattr(self, key, kwargs[key])
6901 if key not in kwargs:
6902 raise errors.ProgrammerError("Missing input parameter '%s' to"
6903 " IAllocator" % key)
6904 self._BuildInputData()
6906 def _ComputeClusterData(self):
6907 """Compute the generic allocator input data.
6909 This is the data that is independent of the actual operation.
6913 cluster_info = cfg.GetClusterInfo()
6916 "version": constants.IALLOCATOR_VERSION,
6917 "cluster_name": cfg.GetClusterName(),
6918 "cluster_tags": list(cluster_info.GetTags()),
6919 "enabled_hypervisors": list(cluster_info.enabled_hypervisors),
6920 # we don't have job IDs
6922 iinfo = cfg.GetAllInstancesInfo().values()
6923 i_list = [(inst, cluster_info.FillBE(inst)) for inst in iinfo]
6927 node_list = cfg.GetNodeList()
6929 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
6930 hypervisor_name = self.hypervisor
6931 elif self.mode == constants.IALLOCATOR_MODE_RELOC:
6932 hypervisor_name = cfg.GetInstanceInfo(self.name).hypervisor
6934 node_data = self.lu.rpc.call_node_info(node_list, cfg.GetVGName(),
6936 node_iinfo = self.lu.rpc.call_all_instances_info(node_list,
6937 cluster_info.enabled_hypervisors)
6938 for nname, nresult in node_data.items():
6939 # first fill in static (config-based) values
6940 ninfo = cfg.GetNodeInfo(nname)
6942 "tags": list(ninfo.GetTags()),
6943 "primary_ip": ninfo.primary_ip,
6944 "secondary_ip": ninfo.secondary_ip,
6945 "offline": ninfo.offline,
6946 "drained": ninfo.drained,
6947 "master_candidate": ninfo.master_candidate,
6950 if not (ninfo.offline or ninfo.drained):
6952 if not isinstance(nresult.data, dict):
6953 raise errors.OpExecError("Can't get data for node %s" % nname)
6954 remote_info = nresult.data
6955 for attr in ['memory_total', 'memory_free', 'memory_dom0',
6956 'vg_size', 'vg_free', 'cpu_total']:
6957 if attr not in remote_info:
6958 raise errors.OpExecError("Node '%s' didn't return attribute"
6959 " '%s'" % (nname, attr))
6961 remote_info[attr] = int(remote_info[attr])
6962 except ValueError, err:
6963 raise errors.OpExecError("Node '%s' returned invalid value"
6964 " for '%s': %s" % (nname, attr, err))
6965 # compute memory used by primary instances
6966 i_p_mem = i_p_up_mem = 0
6967 for iinfo, beinfo in i_list:
6968 if iinfo.primary_node == nname:
6969 i_p_mem += beinfo[constants.BE_MEMORY]
6970 if iinfo.name not in node_iinfo[nname].data:
6973 i_used_mem = int(node_iinfo[nname].data[iinfo.name]['memory'])
6974 i_mem_diff = beinfo[constants.BE_MEMORY] - i_used_mem
6975 remote_info['memory_free'] -= max(0, i_mem_diff)
6978 i_p_up_mem += beinfo[constants.BE_MEMORY]
6980 # compute memory used by instances
6982 "total_memory": remote_info['memory_total'],
6983 "reserved_memory": remote_info['memory_dom0'],
6984 "free_memory": remote_info['memory_free'],
6985 "total_disk": remote_info['vg_size'],
6986 "free_disk": remote_info['vg_free'],
6987 "total_cpus": remote_info['cpu_total'],
6988 "i_pri_memory": i_p_mem,
6989 "i_pri_up_memory": i_p_up_mem,
6993 node_results[nname] = pnr
6994 data["nodes"] = node_results
6998 for iinfo, beinfo in i_list:
6999 nic_data = [{"mac": n.mac, "ip": n.ip, "bridge": n.bridge}
7000 for n in iinfo.nics]
7002 "tags": list(iinfo.GetTags()),
7003 "admin_up": iinfo.admin_up,
7004 "vcpus": beinfo[constants.BE_VCPUS],
7005 "memory": beinfo[constants.BE_MEMORY],
7007 "nodes": [iinfo.primary_node] + list(iinfo.secondary_nodes),
7009 "disks": [{"size": dsk.size, "mode": dsk.mode} for dsk in iinfo.disks],
7010 "disk_template": iinfo.disk_template,
7011 "hypervisor": iinfo.hypervisor,
7013 pir["disk_space_total"] = _ComputeDiskSize(iinfo.disk_template,
7015 instance_data[iinfo.name] = pir
7017 data["instances"] = instance_data
7021 def _AddNewInstance(self):
7022 """Add new instance data to allocator structure.
7024 This in combination with _AllocatorGetClusterData will create the
7025 correct structure needed as input for the allocator.
7027 The checks for the completeness of the opcode must have already been
7033 disk_space = _ComputeDiskSize(self.disk_template, self.disks)
7035 if self.disk_template in constants.DTS_NET_MIRROR:
7036 self.required_nodes = 2
7038 self.required_nodes = 1
7042 "disk_template": self.disk_template,
7045 "vcpus": self.vcpus,
7046 "memory": self.mem_size,
7047 "disks": self.disks,
7048 "disk_space_total": disk_space,
7050 "required_nodes": self.required_nodes,
7052 data["request"] = request
7054 def _AddRelocateInstance(self):
7055 """Add relocate instance data to allocator structure.
7057 This in combination with _IAllocatorGetClusterData will create the
7058 correct structure needed as input for the allocator.
7060 The checks for the completeness of the opcode must have already been
7064 instance = self.lu.cfg.GetInstanceInfo(self.name)
7065 if instance is None:
7066 raise errors.ProgrammerError("Unknown instance '%s' passed to"
7067 " IAllocator" % self.name)
7069 if instance.disk_template not in constants.DTS_NET_MIRROR:
7070 raise errors.OpPrereqError("Can't relocate non-mirrored instances")
7072 if len(instance.secondary_nodes) != 1:
7073 raise errors.OpPrereqError("Instance has not exactly one secondary node")
7075 self.required_nodes = 1
7076 disk_sizes = [{'size': disk.size} for disk in instance.disks]
7077 disk_space = _ComputeDiskSize(instance.disk_template, disk_sizes)
7082 "disk_space_total": disk_space,
7083 "required_nodes": self.required_nodes,
7084 "relocate_from": self.relocate_from,
7086 self.in_data["request"] = request
7088 def _BuildInputData(self):
7089 """Build input data structures.
7092 self._ComputeClusterData()
7094 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
7095 self._AddNewInstance()
7097 self._AddRelocateInstance()
7099 self.in_text = serializer.Dump(self.in_data)
7101 def Run(self, name, validate=True, call_fn=None):
7102 """Run an instance allocator and return the results.
7106 call_fn = self.lu.rpc.call_iallocator_runner
7108 result = call_fn(self.lu.cfg.GetMasterNode(), name, self.in_text)
7111 if not isinstance(result.data, (list, tuple)) or len(result.data) != 4:
7112 raise errors.OpExecError("Invalid result from master iallocator runner")
7114 rcode, stdout, stderr, fail = result.data
7116 if rcode == constants.IARUN_NOTFOUND:
7117 raise errors.OpExecError("Can't find allocator '%s'" % name)
7118 elif rcode == constants.IARUN_FAILURE:
7119 raise errors.OpExecError("Instance allocator call failed: %s,"
7120 " output: %s" % (fail, stdout+stderr))
7121 self.out_text = stdout
7123 self._ValidateResult()
7125 def _ValidateResult(self):
7126 """Process the allocator results.
7128 This will process and if successful save the result in
7129 self.out_data and the other parameters.
7133 rdict = serializer.Load(self.out_text)
7134 except Exception, err:
7135 raise errors.OpExecError("Can't parse iallocator results: %s" % str(err))
7137 if not isinstance(rdict, dict):
7138 raise errors.OpExecError("Can't parse iallocator results: not a dict")
7140 for key in "success", "info", "nodes":
7141 if key not in rdict:
7142 raise errors.OpExecError("Can't parse iallocator results:"
7143 " missing key '%s'" % key)
7144 setattr(self, key, rdict[key])
7146 if not isinstance(rdict["nodes"], list):
7147 raise errors.OpExecError("Can't parse iallocator results: 'nodes' key"
7149 self.out_data = rdict
7152 class LUTestAllocator(NoHooksLU):
7153 """Run allocator tests.
7155 This LU runs the allocator tests
7158 _OP_REQP = ["direction", "mode", "name"]
7160 def CheckPrereq(self):
7161 """Check prerequisites.
7163 This checks the opcode parameters depending on the director and mode test.
7166 if self.op.mode == constants.IALLOCATOR_MODE_ALLOC:
7167 for attr in ["name", "mem_size", "disks", "disk_template",
7168 "os", "tags", "nics", "vcpus"]:
7169 if not hasattr(self.op, attr):
7170 raise errors.OpPrereqError("Missing attribute '%s' on opcode input" %
7172 iname = self.cfg.ExpandInstanceName(self.op.name)
7173 if iname is not None:
7174 raise errors.OpPrereqError("Instance '%s' already in the cluster" %
7176 if not isinstance(self.op.nics, list):
7177 raise errors.OpPrereqError("Invalid parameter 'nics'")
7178 for row in self.op.nics:
7179 if (not isinstance(row, dict) or
7182 "bridge" not in row):
7183 raise errors.OpPrereqError("Invalid contents of the"
7184 " 'nics' parameter")
7185 if not isinstance(self.op.disks, list):
7186 raise errors.OpPrereqError("Invalid parameter 'disks'")
7187 for row in self.op.disks:
7188 if (not isinstance(row, dict) or
7189 "size" not in row or
7190 not isinstance(row["size"], int) or
7191 "mode" not in row or
7192 row["mode"] not in ['r', 'w']):
7193 raise errors.OpPrereqError("Invalid contents of the"
7194 " 'disks' parameter")
7195 if not hasattr(self.op, "hypervisor") or self.op.hypervisor is None:
7196 self.op.hypervisor = self.cfg.GetHypervisorType()
7197 elif self.op.mode == constants.IALLOCATOR_MODE_RELOC:
7198 if not hasattr(self.op, "name"):
7199 raise errors.OpPrereqError("Missing attribute 'name' on opcode input")
7200 fname = self.cfg.ExpandInstanceName(self.op.name)
7202 raise errors.OpPrereqError("Instance '%s' not found for relocation" %
7204 self.op.name = fname
7205 self.relocate_from = self.cfg.GetInstanceInfo(fname).secondary_nodes
7207 raise errors.OpPrereqError("Invalid test allocator mode '%s'" %
7210 if self.op.direction == constants.IALLOCATOR_DIR_OUT:
7211 if not hasattr(self.op, "allocator") or self.op.allocator is None:
7212 raise errors.OpPrereqError("Missing allocator name")
7213 elif self.op.direction != constants.IALLOCATOR_DIR_IN:
7214 raise errors.OpPrereqError("Wrong allocator test '%s'" %
7217 def Exec(self, feedback_fn):
7218 """Run the allocator test.
7221 if self.op.mode == constants.IALLOCATOR_MODE_ALLOC:
7222 ial = IAllocator(self,
7225 mem_size=self.op.mem_size,
7226 disks=self.op.disks,
7227 disk_template=self.op.disk_template,
7231 vcpus=self.op.vcpus,
7232 hypervisor=self.op.hypervisor,
7235 ial = IAllocator(self,
7238 relocate_from=list(self.relocate_from),
7241 if self.op.direction == constants.IALLOCATOR_DIR_IN:
7242 result = ial.in_text
7244 ial.Run(self.op.allocator, validate=False)
7245 result = ial.out_text