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
36 from ganeti import ssh
37 from ganeti import utils
38 from ganeti import errors
39 from ganeti import hypervisor
40 from ganeti import locking
41 from ganeti import constants
42 from ganeti import objects
43 from ganeti import opcodes
44 from ganeti import serializer
45 from ganeti import ssconf
48 class LogicalUnit(object):
49 """Logical Unit base class.
51 Subclasses must follow these rules:
52 - implement ExpandNames
53 - implement CheckPrereq
55 - implement BuildHooksEnv
56 - redefine HPATH and HTYPE
57 - optionally redefine their run requirements:
58 REQ_BGL: the LU needs to hold the Big Ganeti Lock exclusively
60 Note that all commands require root permissions.
68 def __init__(self, processor, op, context, rpc):
69 """Constructor for LogicalUnit.
71 This needs to be overriden in derived classes in order to check op
77 self.cfg = context.cfg
78 self.context = context
80 # Dicts used to declare locking needs to mcpu
81 self.needed_locks = None
82 self.acquired_locks = {}
83 self.share_locks = dict(((i, 0) for i in locking.LEVELS))
85 self.remove_locks = {}
86 # Used to force good behavior when calling helper functions
87 self.recalculate_locks = {}
90 self.LogWarning = processor.LogWarning
91 self.LogInfo = processor.LogInfo
93 for attr_name in self._OP_REQP:
94 attr_val = getattr(op, attr_name, None)
96 raise errors.OpPrereqError("Required parameter '%s' missing" %
101 """Returns the SshRunner object
105 self.__ssh = ssh.SshRunner(self.cfg.GetClusterName())
108 ssh = property(fget=__GetSSH)
110 def CheckArguments(self):
111 """Check syntactic validity for the opcode arguments.
113 This method is for doing a simple syntactic check and ensure
114 validity of opcode parameters, without any cluster-related
115 checks. While the same can be accomplished in ExpandNames and/or
116 CheckPrereq, doing these separate is better because:
118 - ExpandNames is left as as purely a lock-related function
119 - CheckPrereq is run after we have aquired locks (and possible
122 The function is allowed to change the self.op attribute so that
123 later methods can no longer worry about missing parameters.
128 def ExpandNames(self):
129 """Expand names for this LU.
131 This method is called before starting to execute the opcode, and it should
132 update all the parameters of the opcode to their canonical form (e.g. a
133 short node name must be fully expanded after this method has successfully
134 completed). This way locking, hooks, logging, ecc. can work correctly.
136 LUs which implement this method must also populate the self.needed_locks
137 member, as a dict with lock levels as keys, and a list of needed lock names
140 - use an empty dict if you don't need any lock
141 - if you don't need any lock at a particular level omit that level
142 - don't put anything for the BGL level
143 - if you want all locks at a level use locking.ALL_SET as a value
145 If you need to share locks (rather than acquire them exclusively) at one
146 level you can modify self.share_locks, setting a true value (usually 1) for
147 that level. By default locks are not shared.
151 # Acquire all nodes and one instance
152 self.needed_locks = {
153 locking.LEVEL_NODE: locking.ALL_SET,
154 locking.LEVEL_INSTANCE: ['instance1.example.tld'],
156 # Acquire just two nodes
157 self.needed_locks = {
158 locking.LEVEL_NODE: ['node1.example.tld', 'node2.example.tld'],
161 self.needed_locks = {} # No, you can't leave it to the default value None
164 # The implementation of this method is mandatory only if the new LU is
165 # concurrent, so that old LUs don't need to be changed all at the same
168 self.needed_locks = {} # Exclusive LUs don't need locks.
170 raise NotImplementedError
172 def DeclareLocks(self, level):
173 """Declare LU locking needs for a level
175 While most LUs can just declare their locking needs at ExpandNames time,
176 sometimes there's the need to calculate some locks after having acquired
177 the ones before. This function is called just before acquiring locks at a
178 particular level, but after acquiring the ones at lower levels, and permits
179 such calculations. It can be used to modify self.needed_locks, and by
180 default it does nothing.
182 This function is only called if you have something already set in
183 self.needed_locks for the level.
185 @param level: Locking level which is going to be locked
186 @type level: member of ganeti.locking.LEVELS
190 def CheckPrereq(self):
191 """Check prerequisites for this LU.
193 This method should check that the prerequisites for the execution
194 of this LU are fulfilled. It can do internode communication, but
195 it should be idempotent - no cluster or system changes are
198 The method should raise errors.OpPrereqError in case something is
199 not fulfilled. Its return value is ignored.
201 This method should also update all the parameters of the opcode to
202 their canonical form if it hasn't been done by ExpandNames before.
205 raise NotImplementedError
207 def Exec(self, feedback_fn):
210 This method should implement the actual work. It should raise
211 errors.OpExecError for failures that are somewhat dealt with in
215 raise NotImplementedError
217 def BuildHooksEnv(self):
218 """Build hooks environment for this LU.
220 This method should return a three-node tuple consisting of: a dict
221 containing the environment that will be used for running the
222 specific hook for this LU, a list of node names on which the hook
223 should run before the execution, and a list of node names on which
224 the hook should run after the execution.
226 The keys of the dict must not have 'GANETI_' prefixed as this will
227 be handled in the hooks runner. Also note additional keys will be
228 added by the hooks runner. If the LU doesn't define any
229 environment, an empty dict (and not None) should be returned.
231 No nodes should be returned as an empty list (and not None).
233 Note that if the HPATH for a LU class is None, this function will
237 raise NotImplementedError
239 def HooksCallBack(self, phase, hook_results, feedback_fn, lu_result):
240 """Notify the LU about the results of its hooks.
242 This method is called every time a hooks phase is executed, and notifies
243 the Logical Unit about the hooks' result. The LU can then use it to alter
244 its result based on the hooks. By default the method does nothing and the
245 previous result is passed back unchanged but any LU can define it if it
246 wants to use the local cluster hook-scripts somehow.
248 @param phase: one of L{constants.HOOKS_PHASE_POST} or
249 L{constants.HOOKS_PHASE_PRE}; it denotes the hooks phase
250 @param hook_results: the results of the multi-node hooks rpc call
251 @param feedback_fn: function used send feedback back to the caller
252 @param lu_result: the previous Exec result this LU had, or None
254 @return: the new Exec result, based on the previous result
260 def _ExpandAndLockInstance(self):
261 """Helper function to expand and lock an instance.
263 Many LUs that work on an instance take its name in self.op.instance_name
264 and need to expand it and then declare the expanded name for locking. This
265 function does it, and then updates self.op.instance_name to the expanded
266 name. It also initializes needed_locks as a dict, if this hasn't been done
270 if self.needed_locks is None:
271 self.needed_locks = {}
273 assert locking.LEVEL_INSTANCE not in self.needed_locks, \
274 "_ExpandAndLockInstance called with instance-level locks set"
275 expanded_name = self.cfg.ExpandInstanceName(self.op.instance_name)
276 if expanded_name is None:
277 raise errors.OpPrereqError("Instance '%s' not known" %
278 self.op.instance_name)
279 self.needed_locks[locking.LEVEL_INSTANCE] = expanded_name
280 self.op.instance_name = expanded_name
282 def _LockInstancesNodes(self, primary_only=False):
283 """Helper function to declare instances' nodes for locking.
285 This function should be called after locking one or more instances to lock
286 their nodes. Its effect is populating self.needed_locks[locking.LEVEL_NODE]
287 with all primary or secondary nodes for instances already locked and
288 present in self.needed_locks[locking.LEVEL_INSTANCE].
290 It should be called from DeclareLocks, and for safety only works if
291 self.recalculate_locks[locking.LEVEL_NODE] is set.
293 In the future it may grow parameters to just lock some instance's nodes, or
294 to just lock primaries or secondary nodes, if needed.
296 If should be called in DeclareLocks in a way similar to::
298 if level == locking.LEVEL_NODE:
299 self._LockInstancesNodes()
301 @type primary_only: boolean
302 @param primary_only: only lock primary nodes of locked instances
305 assert locking.LEVEL_NODE in self.recalculate_locks, \
306 "_LockInstancesNodes helper function called with no nodes to recalculate"
308 # TODO: check if we're really been called with the instance locks held
310 # For now we'll replace self.needed_locks[locking.LEVEL_NODE], but in the
311 # future we might want to have different behaviors depending on the value
312 # of self.recalculate_locks[locking.LEVEL_NODE]
314 for instance_name in self.acquired_locks[locking.LEVEL_INSTANCE]:
315 instance = self.context.cfg.GetInstanceInfo(instance_name)
316 wanted_nodes.append(instance.primary_node)
318 wanted_nodes.extend(instance.secondary_nodes)
320 if self.recalculate_locks[locking.LEVEL_NODE] == constants.LOCKS_REPLACE:
321 self.needed_locks[locking.LEVEL_NODE] = wanted_nodes
322 elif self.recalculate_locks[locking.LEVEL_NODE] == constants.LOCKS_APPEND:
323 self.needed_locks[locking.LEVEL_NODE].extend(wanted_nodes)
325 del self.recalculate_locks[locking.LEVEL_NODE]
328 class NoHooksLU(LogicalUnit):
329 """Simple LU which runs no hooks.
331 This LU is intended as a parent for other LogicalUnits which will
332 run no hooks, in order to reduce duplicate code.
339 def _GetWantedNodes(lu, nodes):
340 """Returns list of checked and expanded node names.
342 @type lu: L{LogicalUnit}
343 @param lu: the logical unit on whose behalf we execute
345 @param nodes: list of node names or None for all nodes
347 @return: the list of nodes, sorted
348 @raise errors.OpProgrammerError: if the nodes parameter is wrong type
351 if not isinstance(nodes, list):
352 raise errors.OpPrereqError("Invalid argument type 'nodes'")
355 raise errors.ProgrammerError("_GetWantedNodes should only be called with a"
356 " non-empty list of nodes whose name is to be expanded.")
360 node = lu.cfg.ExpandNodeName(name)
362 raise errors.OpPrereqError("No such node name '%s'" % name)
365 return utils.NiceSort(wanted)
368 def _GetWantedInstances(lu, instances):
369 """Returns list of checked and expanded instance names.
371 @type lu: L{LogicalUnit}
372 @param lu: the logical unit on whose behalf we execute
373 @type instances: list
374 @param instances: list of instance names or None for all instances
376 @return: the list of instances, sorted
377 @raise errors.OpPrereqError: if the instances parameter is wrong type
378 @raise errors.OpPrereqError: if any of the passed instances is not found
381 if not isinstance(instances, list):
382 raise errors.OpPrereqError("Invalid argument type 'instances'")
387 for name in instances:
388 instance = lu.cfg.ExpandInstanceName(name)
390 raise errors.OpPrereqError("No such instance name '%s'" % name)
391 wanted.append(instance)
394 wanted = utils.NiceSort(lu.cfg.GetInstanceList())
398 def _CheckOutputFields(static, dynamic, selected):
399 """Checks whether all selected fields are valid.
401 @type static: L{utils.FieldSet}
402 @param static: static fields set
403 @type dynamic: L{utils.FieldSet}
404 @param dynamic: dynamic fields set
411 delta = f.NonMatching(selected)
413 raise errors.OpPrereqError("Unknown output fields selected: %s"
417 def _CheckBooleanOpField(op, name):
418 """Validates boolean opcode parameters.
420 This will ensure that an opcode parameter is either a boolean value,
421 or None (but that it always exists).
424 val = getattr(op, name, None)
425 if not (val is None or isinstance(val, bool)):
426 raise errors.OpPrereqError("Invalid boolean parameter '%s' (%s)" %
428 setattr(op, name, val)
431 def _CheckNodeOnline(lu, node):
432 """Ensure that a given node is online.
434 @param lu: the LU on behalf of which we make the check
435 @param node: the node to check
436 @raise errors.OpPrereqError: if the node is offline
439 if lu.cfg.GetNodeInfo(node).offline:
440 raise errors.OpPrereqError("Can't use offline node %s" % node)
443 def _CheckNodeNotDrained(lu, node):
444 """Ensure that a given node is not drained.
446 @param lu: the LU on behalf of which we make the check
447 @param node: the node to check
448 @raise errors.OpPrereqError: if the node is drained
451 if lu.cfg.GetNodeInfo(node).drained:
452 raise errors.OpPrereqError("Can't use drained node %s" % node)
455 def _BuildInstanceHookEnv(name, primary_node, secondary_nodes, os_type, status,
456 memory, vcpus, nics, disk_template, disks):
457 """Builds instance related env variables for hooks
459 This builds the hook environment from individual variables.
462 @param name: the name of the instance
463 @type primary_node: string
464 @param primary_node: the name of the instance's primary node
465 @type secondary_nodes: list
466 @param secondary_nodes: list of secondary nodes as strings
467 @type os_type: string
468 @param os_type: the name of the instance's OS
469 @type status: boolean
470 @param status: the should_run status of the instance
472 @param memory: the memory size of the instance
474 @param vcpus: the count of VCPUs the instance has
476 @param nics: list of tuples (ip, bridge, mac) representing
477 the NICs the instance has
478 @type disk_template: string
479 @param disk_template: the distk template of the instance
481 @param disks: the list of (size, mode) pairs
483 @return: the hook environment for this instance
492 "INSTANCE_NAME": name,
493 "INSTANCE_PRIMARY": primary_node,
494 "INSTANCE_SECONDARIES": " ".join(secondary_nodes),
495 "INSTANCE_OS_TYPE": os_type,
496 "INSTANCE_STATUS": str_status,
497 "INSTANCE_MEMORY": memory,
498 "INSTANCE_VCPUS": vcpus,
499 "INSTANCE_DISK_TEMPLATE": disk_template,
503 nic_count = len(nics)
504 for idx, (ip, bridge, mac) in enumerate(nics):
507 env["INSTANCE_NIC%d_IP" % idx] = ip
508 env["INSTANCE_NIC%d_BRIDGE" % idx] = bridge
509 env["INSTANCE_NIC%d_MAC" % idx] = mac
513 env["INSTANCE_NIC_COUNT"] = nic_count
516 disk_count = len(disks)
517 for idx, (size, mode) in enumerate(disks):
518 env["INSTANCE_DISK%d_SIZE" % idx] = size
519 env["INSTANCE_DISK%d_MODE" % idx] = mode
523 env["INSTANCE_DISK_COUNT"] = disk_count
528 def _BuildInstanceHookEnvByObject(lu, instance, override=None):
529 """Builds instance related env variables for hooks from an object.
531 @type lu: L{LogicalUnit}
532 @param lu: the logical unit on whose behalf we execute
533 @type instance: L{objects.Instance}
534 @param instance: the instance for which we should build the
537 @param override: dictionary with key/values that will override
540 @return: the hook environment dictionary
543 bep = lu.cfg.GetClusterInfo().FillBE(instance)
545 'name': instance.name,
546 'primary_node': instance.primary_node,
547 'secondary_nodes': instance.secondary_nodes,
548 'os_type': instance.os,
549 'status': instance.admin_up,
550 'memory': bep[constants.BE_MEMORY],
551 'vcpus': bep[constants.BE_VCPUS],
552 'nics': [(nic.ip, nic.bridge, nic.mac) for nic in instance.nics],
553 'disk_template': instance.disk_template,
554 'disks': [(disk.size, disk.mode) for disk in instance.disks],
557 args.update(override)
558 return _BuildInstanceHookEnv(**args)
561 def _AdjustCandidatePool(lu):
562 """Adjust the candidate pool after node operations.
565 mod_list = lu.cfg.MaintainCandidatePool()
567 lu.LogInfo("Promoted nodes to master candidate role: %s",
568 ", ".join(node.name for node in mod_list))
569 for name in mod_list:
570 lu.context.ReaddNode(name)
571 mc_now, mc_max = lu.cfg.GetMasterCandidateStats()
573 lu.LogInfo("Note: more nodes are candidates (%d) than desired (%d)" %
577 def _CheckInstanceBridgesExist(lu, instance):
578 """Check that the brigdes needed by an instance exist.
581 # check bridges existance
582 brlist = [nic.bridge for nic in instance.nics]
583 result = lu.rpc.call_bridges_exist(instance.primary_node, brlist)
586 raise errors.OpPrereqError("One or more target bridges %s does not"
587 " exist on destination node '%s'" %
588 (brlist, instance.primary_node))
591 class LUDestroyCluster(NoHooksLU):
592 """Logical unit for destroying the cluster.
597 def CheckPrereq(self):
598 """Check prerequisites.
600 This checks whether the cluster is empty.
602 Any errors are signalled by raising errors.OpPrereqError.
605 master = self.cfg.GetMasterNode()
607 nodelist = self.cfg.GetNodeList()
608 if len(nodelist) != 1 or nodelist[0] != master:
609 raise errors.OpPrereqError("There are still %d node(s) in"
610 " this cluster." % (len(nodelist) - 1))
611 instancelist = self.cfg.GetInstanceList()
613 raise errors.OpPrereqError("There are still %d instance(s) in"
614 " this cluster." % len(instancelist))
616 def Exec(self, feedback_fn):
617 """Destroys the cluster.
620 master = self.cfg.GetMasterNode()
621 result = self.rpc.call_node_stop_master(master, False)
624 raise errors.OpExecError("Could not disable the master role")
625 priv_key, pub_key, _ = ssh.GetUserFiles(constants.GANETI_RUNAS)
626 utils.CreateBackup(priv_key)
627 utils.CreateBackup(pub_key)
631 class LUVerifyCluster(LogicalUnit):
632 """Verifies the cluster status.
635 HPATH = "cluster-verify"
636 HTYPE = constants.HTYPE_CLUSTER
637 _OP_REQP = ["skip_checks"]
640 def ExpandNames(self):
641 self.needed_locks = {
642 locking.LEVEL_NODE: locking.ALL_SET,
643 locking.LEVEL_INSTANCE: locking.ALL_SET,
645 self.share_locks = dict(((i, 1) for i in locking.LEVELS))
647 def _VerifyNode(self, nodeinfo, file_list, local_cksum,
648 node_result, feedback_fn, master_files,
650 """Run multiple tests against a node.
654 - compares ganeti version
655 - checks vg existance and size > 20G
656 - checks config file checksum
657 - checks ssh to other nodes
659 @type nodeinfo: L{objects.Node}
660 @param nodeinfo: the node to check
661 @param file_list: required list of files
662 @param local_cksum: dictionary of local files and their checksums
663 @param node_result: the results from the node
664 @param feedback_fn: function used to accumulate results
665 @param master_files: list of files that only masters should have
666 @param drbd_map: the useddrbd minors for this node, in
667 form of minor: (instance, must_exist) which correspond to instances
668 and their running status
669 @param vg_name: Ganeti Volume Group (result of self.cfg.GetVGName())
674 # main result, node_result should be a non-empty dict
675 if not node_result or not isinstance(node_result, dict):
676 feedback_fn(" - ERROR: unable to verify node %s." % (node,))
679 # compares ganeti version
680 local_version = constants.PROTOCOL_VERSION
681 remote_version = node_result.get('version', None)
682 if not (remote_version and isinstance(remote_version, (list, tuple)) and
683 len(remote_version) == 2):
684 feedback_fn(" - ERROR: connection to %s failed" % (node))
687 if local_version != remote_version[0]:
688 feedback_fn(" - ERROR: incompatible protocol versions: master %s,"
689 " node %s %s" % (local_version, node, remote_version[0]))
692 # node seems compatible, we can actually try to look into its results
696 # full package version
697 if constants.RELEASE_VERSION != remote_version[1]:
698 feedback_fn(" - WARNING: software version mismatch: master %s,"
700 (constants.RELEASE_VERSION, node, remote_version[1]))
702 # checks vg existence and size > 20G
703 if vg_name is not None:
704 vglist = node_result.get(constants.NV_VGLIST, None)
706 feedback_fn(" - ERROR: unable to check volume groups on node %s." %
710 vgstatus = utils.CheckVolumeGroupSize(vglist, vg_name,
711 constants.MIN_VG_SIZE)
713 feedback_fn(" - ERROR: %s on node %s" % (vgstatus, node))
716 # checks config file checksum
718 remote_cksum = node_result.get(constants.NV_FILELIST, None)
719 if not isinstance(remote_cksum, dict):
721 feedback_fn(" - ERROR: node hasn't returned file checksum data")
723 for file_name in file_list:
724 node_is_mc = nodeinfo.master_candidate
725 must_have_file = file_name not in master_files
726 if file_name not in remote_cksum:
727 if node_is_mc or must_have_file:
729 feedback_fn(" - ERROR: file '%s' missing" % file_name)
730 elif remote_cksum[file_name] != local_cksum[file_name]:
731 if node_is_mc or must_have_file:
733 feedback_fn(" - ERROR: file '%s' has wrong checksum" % file_name)
735 # not candidate and this is not a must-have file
737 feedback_fn(" - ERROR: non master-candidate has old/wrong file"
740 # all good, except non-master/non-must have combination
741 if not node_is_mc and not must_have_file:
742 feedback_fn(" - ERROR: file '%s' should not exist on non master"
743 " candidates" % file_name)
747 if constants.NV_NODELIST not in node_result:
749 feedback_fn(" - ERROR: node hasn't returned node ssh connectivity data")
751 if node_result[constants.NV_NODELIST]:
753 for node in node_result[constants.NV_NODELIST]:
754 feedback_fn(" - ERROR: ssh communication with node '%s': %s" %
755 (node, node_result[constants.NV_NODELIST][node]))
757 if constants.NV_NODENETTEST not in node_result:
759 feedback_fn(" - ERROR: node hasn't returned node tcp connectivity data")
761 if node_result[constants.NV_NODENETTEST]:
763 nlist = utils.NiceSort(node_result[constants.NV_NODENETTEST].keys())
765 feedback_fn(" - ERROR: tcp communication with node '%s': %s" %
766 (node, node_result[constants.NV_NODENETTEST][node]))
768 hyp_result = node_result.get(constants.NV_HYPERVISOR, None)
769 if isinstance(hyp_result, dict):
770 for hv_name, hv_result in hyp_result.iteritems():
771 if hv_result is not None:
772 feedback_fn(" - ERROR: hypervisor %s verify failure: '%s'" %
773 (hv_name, hv_result))
775 # check used drbd list
776 if vg_name is not None:
777 used_minors = node_result.get(constants.NV_DRBDLIST, [])
778 if not isinstance(used_minors, (tuple, list)):
779 feedback_fn(" - ERROR: cannot parse drbd status file: %s" %
782 for minor, (iname, must_exist) in drbd_map.items():
783 if minor not in used_minors and must_exist:
784 feedback_fn(" - ERROR: drbd minor %d of instance %s is"
785 " not active" % (minor, iname))
787 for minor in used_minors:
788 if minor not in drbd_map:
789 feedback_fn(" - ERROR: unallocated drbd minor %d is in use" %
795 def _VerifyInstance(self, instance, instanceconfig, node_vol_is,
796 node_instance, feedback_fn, n_offline):
797 """Verify an instance.
799 This function checks to see if the required block devices are
800 available on the instance's node.
805 node_current = instanceconfig.primary_node
808 instanceconfig.MapLVsByNode(node_vol_should)
810 for node in node_vol_should:
811 if node in n_offline:
812 # ignore missing volumes on offline nodes
814 for volume in node_vol_should[node]:
815 if node not in node_vol_is or volume not in node_vol_is[node]:
816 feedback_fn(" - ERROR: volume %s missing on node %s" %
820 if instanceconfig.admin_up:
821 if ((node_current not in node_instance or
822 not instance in node_instance[node_current]) and
823 node_current not in n_offline):
824 feedback_fn(" - ERROR: instance %s not running on node %s" %
825 (instance, node_current))
828 for node in node_instance:
829 if (not node == node_current):
830 if instance in node_instance[node]:
831 feedback_fn(" - ERROR: instance %s should not run on node %s" %
837 def _VerifyOrphanVolumes(self, node_vol_should, node_vol_is, feedback_fn):
838 """Verify if there are any unknown volumes in the cluster.
840 The .os, .swap and backup volumes are ignored. All other volumes are
846 for node in node_vol_is:
847 for volume in node_vol_is[node]:
848 if node not in node_vol_should or volume not in node_vol_should[node]:
849 feedback_fn(" - ERROR: volume %s on node %s should not exist" %
854 def _VerifyOrphanInstances(self, instancelist, node_instance, feedback_fn):
855 """Verify the list of running instances.
857 This checks what instances are running but unknown to the cluster.
861 for node in node_instance:
862 for runninginstance in node_instance[node]:
863 if runninginstance not in instancelist:
864 feedback_fn(" - ERROR: instance %s on node %s should not exist" %
865 (runninginstance, node))
869 def _VerifyNPlusOneMemory(self, node_info, instance_cfg, feedback_fn):
870 """Verify N+1 Memory Resilience.
872 Check that if one single node dies we can still start all the instances it
878 for node, nodeinfo in node_info.iteritems():
879 # This code checks that every node which is now listed as secondary has
880 # enough memory to host all instances it is supposed to should a single
881 # other node in the cluster fail.
882 # FIXME: not ready for failover to an arbitrary node
883 # FIXME: does not support file-backed instances
884 # WARNING: we currently take into account down instances as well as up
885 # ones, considering that even if they're down someone might want to start
886 # them even in the event of a node failure.
887 for prinode, instances in nodeinfo['sinst-by-pnode'].iteritems():
889 for instance in instances:
890 bep = self.cfg.GetClusterInfo().FillBE(instance_cfg[instance])
891 if bep[constants.BE_AUTO_BALANCE]:
892 needed_mem += bep[constants.BE_MEMORY]
893 if nodeinfo['mfree'] < needed_mem:
894 feedback_fn(" - ERROR: not enough memory on node %s to accomodate"
895 " failovers should node %s fail" % (node, prinode))
899 def CheckPrereq(self):
900 """Check prerequisites.
902 Transform the list of checks we're going to skip into a set and check that
903 all its members are valid.
906 self.skip_set = frozenset(self.op.skip_checks)
907 if not constants.VERIFY_OPTIONAL_CHECKS.issuperset(self.skip_set):
908 raise errors.OpPrereqError("Invalid checks to be skipped specified")
910 def BuildHooksEnv(self):
913 Cluster-Verify hooks just rone in the post phase and their failure makes
914 the output be logged in the verify output and the verification to fail.
917 all_nodes = self.cfg.GetNodeList()
919 "CLUSTER_TAGS": " ".join(self.cfg.GetClusterInfo().GetTags())
921 for node in self.cfg.GetAllNodesInfo().values():
922 env["NODE_TAGS_%s" % node.name] = " ".join(node.GetTags())
924 return env, [], all_nodes
926 def Exec(self, feedback_fn):
927 """Verify integrity of cluster, performing various test on nodes.
931 feedback_fn("* Verifying global settings")
932 for msg in self.cfg.VerifyConfig():
933 feedback_fn(" - ERROR: %s" % msg)
935 vg_name = self.cfg.GetVGName()
936 hypervisors = self.cfg.GetClusterInfo().enabled_hypervisors
937 nodelist = utils.NiceSort(self.cfg.GetNodeList())
938 nodeinfo = [self.cfg.GetNodeInfo(nname) for nname in nodelist]
939 instancelist = utils.NiceSort(self.cfg.GetInstanceList())
940 instanceinfo = dict((iname, self.cfg.GetInstanceInfo(iname))
941 for iname in instancelist)
942 i_non_redundant = [] # Non redundant instances
943 i_non_a_balanced = [] # Non auto-balanced instances
944 n_offline = [] # List of offline nodes
945 n_drained = [] # List of nodes being drained
951 # FIXME: verify OS list
953 master_files = [constants.CLUSTER_CONF_FILE]
955 file_names = ssconf.SimpleStore().GetFileList()
956 file_names.append(constants.SSL_CERT_FILE)
957 file_names.append(constants.RAPI_CERT_FILE)
958 file_names.extend(master_files)
960 local_checksums = utils.FingerprintFiles(file_names)
962 feedback_fn("* Gathering data (%d nodes)" % len(nodelist))
963 node_verify_param = {
964 constants.NV_FILELIST: file_names,
965 constants.NV_NODELIST: [node.name for node in nodeinfo
966 if not node.offline],
967 constants.NV_HYPERVISOR: hypervisors,
968 constants.NV_NODENETTEST: [(node.name, node.primary_ip,
969 node.secondary_ip) for node in nodeinfo
970 if not node.offline],
971 constants.NV_INSTANCELIST: hypervisors,
972 constants.NV_VERSION: None,
973 constants.NV_HVINFO: self.cfg.GetHypervisorType(),
975 if vg_name is not None:
976 node_verify_param[constants.NV_VGLIST] = None
977 node_verify_param[constants.NV_LVLIST] = vg_name
978 node_verify_param[constants.NV_DRBDLIST] = None
979 all_nvinfo = self.rpc.call_node_verify(nodelist, node_verify_param,
980 self.cfg.GetClusterName())
982 cluster = self.cfg.GetClusterInfo()
983 master_node = self.cfg.GetMasterNode()
984 all_drbd_map = self.cfg.ComputeDRBDMap()
986 for node_i in nodeinfo:
988 nresult = all_nvinfo[node].data
991 feedback_fn("* Skipping offline node %s" % (node,))
992 n_offline.append(node)
995 if node == master_node:
997 elif node_i.master_candidate:
998 ntype = "master candidate"
1001 n_drained.append(node)
1004 feedback_fn("* Verifying node %s (%s)" % (node, ntype))
1006 if all_nvinfo[node].failed or not isinstance(nresult, dict):
1007 feedback_fn(" - ERROR: connection to %s failed" % (node,))
1012 for minor, instance in all_drbd_map[node].items():
1013 if instance not in instanceinfo:
1014 feedback_fn(" - ERROR: ghost instance '%s' in temporary DRBD map" %
1016 # ghost instance should not be running, but otherwise we
1017 # don't give double warnings (both ghost instance and
1018 # unallocated minor in use)
1019 node_drbd[minor] = (instance, False)
1021 instance = instanceinfo[instance]
1022 node_drbd[minor] = (instance.name, instance.admin_up)
1023 result = self._VerifyNode(node_i, file_names, local_checksums,
1024 nresult, feedback_fn, master_files,
1028 lvdata = nresult.get(constants.NV_LVLIST, "Missing LV data")
1030 node_volume[node] = {}
1031 elif isinstance(lvdata, basestring):
1032 feedback_fn(" - ERROR: LVM problem on node %s: %s" %
1033 (node, utils.SafeEncode(lvdata)))
1035 node_volume[node] = {}
1036 elif not isinstance(lvdata, dict):
1037 feedback_fn(" - ERROR: connection to %s failed (lvlist)" % (node,))
1041 node_volume[node] = lvdata
1044 idata = nresult.get(constants.NV_INSTANCELIST, None)
1045 if not isinstance(idata, list):
1046 feedback_fn(" - ERROR: connection to %s failed (instancelist)" %
1051 node_instance[node] = idata
1054 nodeinfo = nresult.get(constants.NV_HVINFO, None)
1055 if not isinstance(nodeinfo, dict):
1056 feedback_fn(" - ERROR: connection to %s failed (hvinfo)" % (node,))
1062 "mfree": int(nodeinfo['memory_free']),
1065 # dictionary holding all instances this node is secondary for,
1066 # grouped by their primary node. Each key is a cluster node, and each
1067 # value is a list of instances which have the key as primary and the
1068 # current node as secondary. this is handy to calculate N+1 memory
1069 # availability if you can only failover from a primary to its
1071 "sinst-by-pnode": {},
1073 # FIXME: devise a free space model for file based instances as well
1074 if vg_name is not None:
1075 if (constants.NV_VGLIST not in nresult or
1076 vg_name not in nresult[constants.NV_VGLIST]):
1077 feedback_fn(" - ERROR: node %s didn't return data for the"
1078 " volume group '%s' - it is either missing or broken" %
1082 node_info[node]["dfree"] = int(nresult[constants.NV_VGLIST][vg_name])
1083 except (ValueError, KeyError):
1084 feedback_fn(" - ERROR: invalid nodeinfo value returned"
1085 " from node %s" % (node,))
1089 node_vol_should = {}
1091 for instance in instancelist:
1092 feedback_fn("* Verifying instance %s" % instance)
1093 inst_config = instanceinfo[instance]
1094 result = self._VerifyInstance(instance, inst_config, node_volume,
1095 node_instance, feedback_fn, n_offline)
1097 inst_nodes_offline = []
1099 inst_config.MapLVsByNode(node_vol_should)
1101 instance_cfg[instance] = inst_config
1103 pnode = inst_config.primary_node
1104 if pnode in node_info:
1105 node_info[pnode]['pinst'].append(instance)
1106 elif pnode not in n_offline:
1107 feedback_fn(" - ERROR: instance %s, connection to primary node"
1108 " %s failed" % (instance, pnode))
1111 if pnode in n_offline:
1112 inst_nodes_offline.append(pnode)
1114 # If the instance is non-redundant we cannot survive losing its primary
1115 # node, so we are not N+1 compliant. On the other hand we have no disk
1116 # templates with more than one secondary so that situation is not well
1118 # FIXME: does not support file-backed instances
1119 if len(inst_config.secondary_nodes) == 0:
1120 i_non_redundant.append(instance)
1121 elif len(inst_config.secondary_nodes) > 1:
1122 feedback_fn(" - WARNING: multiple secondaries for instance %s"
1125 if not cluster.FillBE(inst_config)[constants.BE_AUTO_BALANCE]:
1126 i_non_a_balanced.append(instance)
1128 for snode in inst_config.secondary_nodes:
1129 if snode in node_info:
1130 node_info[snode]['sinst'].append(instance)
1131 if pnode not in node_info[snode]['sinst-by-pnode']:
1132 node_info[snode]['sinst-by-pnode'][pnode] = []
1133 node_info[snode]['sinst-by-pnode'][pnode].append(instance)
1134 elif snode not in n_offline:
1135 feedback_fn(" - ERROR: instance %s, connection to secondary node"
1136 " %s failed" % (instance, snode))
1138 if snode in n_offline:
1139 inst_nodes_offline.append(snode)
1141 if inst_nodes_offline:
1142 # warn that the instance lives on offline nodes, and set bad=True
1143 feedback_fn(" - ERROR: instance lives on offline node(s) %s" %
1144 ", ".join(inst_nodes_offline))
1147 feedback_fn("* Verifying orphan volumes")
1148 result = self._VerifyOrphanVolumes(node_vol_should, node_volume,
1152 feedback_fn("* Verifying remaining instances")
1153 result = self._VerifyOrphanInstances(instancelist, node_instance,
1157 if constants.VERIFY_NPLUSONE_MEM not in self.skip_set:
1158 feedback_fn("* Verifying N+1 Memory redundancy")
1159 result = self._VerifyNPlusOneMemory(node_info, instance_cfg, feedback_fn)
1162 feedback_fn("* Other Notes")
1164 feedback_fn(" - NOTICE: %d non-redundant instance(s) found."
1165 % len(i_non_redundant))
1167 if i_non_a_balanced:
1168 feedback_fn(" - NOTICE: %d non-auto-balanced instance(s) found."
1169 % len(i_non_a_balanced))
1172 feedback_fn(" - NOTICE: %d offline node(s) found." % len(n_offline))
1175 feedback_fn(" - NOTICE: %d drained node(s) found." % len(n_drained))
1179 def HooksCallBack(self, phase, hooks_results, feedback_fn, lu_result):
1180 """Analize the post-hooks' result
1182 This method analyses the hook result, handles it, and sends some
1183 nicely-formatted feedback back to the user.
1185 @param phase: one of L{constants.HOOKS_PHASE_POST} or
1186 L{constants.HOOKS_PHASE_PRE}; it denotes the hooks phase
1187 @param hooks_results: the results of the multi-node hooks rpc call
1188 @param feedback_fn: function used send feedback back to the caller
1189 @param lu_result: previous Exec result
1190 @return: the new Exec result, based on the previous result
1194 # We only really run POST phase hooks, and are only interested in
1196 if phase == constants.HOOKS_PHASE_POST:
1197 # Used to change hooks' output to proper indentation
1198 indent_re = re.compile('^', re.M)
1199 feedback_fn("* Hooks Results")
1200 if not hooks_results:
1201 feedback_fn(" - ERROR: general communication failure")
1204 for node_name in hooks_results:
1205 show_node_header = True
1206 res = hooks_results[node_name]
1207 if res.failed or res.data is False or not isinstance(res.data, list):
1209 # no need to warn or set fail return value
1211 feedback_fn(" Communication failure in hooks execution")
1214 for script, hkr, output in res.data:
1215 if hkr == constants.HKR_FAIL:
1216 # The node header is only shown once, if there are
1217 # failing hooks on that node
1218 if show_node_header:
1219 feedback_fn(" Node %s:" % node_name)
1220 show_node_header = False
1221 feedback_fn(" ERROR: Script %s failed, output:" % script)
1222 output = indent_re.sub(' ', output)
1223 feedback_fn("%s" % output)
1229 class LUVerifyDisks(NoHooksLU):
1230 """Verifies the cluster disks status.
1236 def ExpandNames(self):
1237 self.needed_locks = {
1238 locking.LEVEL_NODE: locking.ALL_SET,
1239 locking.LEVEL_INSTANCE: locking.ALL_SET,
1241 self.share_locks = dict(((i, 1) for i in locking.LEVELS))
1243 def CheckPrereq(self):
1244 """Check prerequisites.
1246 This has no prerequisites.
1251 def Exec(self, feedback_fn):
1252 """Verify integrity of cluster disks.
1255 result = res_nodes, res_nlvm, res_instances, res_missing = [], {}, [], {}
1257 vg_name = self.cfg.GetVGName()
1258 nodes = utils.NiceSort(self.cfg.GetNodeList())
1259 instances = [self.cfg.GetInstanceInfo(name)
1260 for name in self.cfg.GetInstanceList()]
1263 for inst in instances:
1265 if (not inst.admin_up or
1266 inst.disk_template not in constants.DTS_NET_MIRROR):
1268 inst.MapLVsByNode(inst_lvs)
1269 # transform { iname: {node: [vol,],},} to {(node, vol): iname}
1270 for node, vol_list in inst_lvs.iteritems():
1271 for vol in vol_list:
1272 nv_dict[(node, vol)] = inst
1277 node_lvs = self.rpc.call_volume_list(nodes, vg_name)
1282 lvs = node_lvs[node]
1285 self.LogWarning("Connection to node %s failed: %s" %
1289 if isinstance(lvs, basestring):
1290 logging.warning("Error enumerating LVs on node %s: %s", node, lvs)
1291 res_nlvm[node] = lvs
1293 elif not isinstance(lvs, dict):
1294 logging.warning("Connection to node %s failed or invalid data"
1296 res_nodes.append(node)
1299 for lv_name, (_, lv_inactive, lv_online) in lvs.iteritems():
1300 inst = nv_dict.pop((node, lv_name), None)
1301 if (not lv_online and inst is not None
1302 and inst.name not in res_instances):
1303 res_instances.append(inst.name)
1305 # any leftover items in nv_dict are missing LVs, let's arrange the
1307 for key, inst in nv_dict.iteritems():
1308 if inst.name not in res_missing:
1309 res_missing[inst.name] = []
1310 res_missing[inst.name].append(key)
1315 class LURenameCluster(LogicalUnit):
1316 """Rename the cluster.
1319 HPATH = "cluster-rename"
1320 HTYPE = constants.HTYPE_CLUSTER
1323 def BuildHooksEnv(self):
1328 "OP_TARGET": self.cfg.GetClusterName(),
1329 "NEW_NAME": self.op.name,
1331 mn = self.cfg.GetMasterNode()
1332 return env, [mn], [mn]
1334 def CheckPrereq(self):
1335 """Verify that the passed name is a valid one.
1338 hostname = utils.HostInfo(self.op.name)
1340 new_name = hostname.name
1341 self.ip = new_ip = hostname.ip
1342 old_name = self.cfg.GetClusterName()
1343 old_ip = self.cfg.GetMasterIP()
1344 if new_name == old_name and new_ip == old_ip:
1345 raise errors.OpPrereqError("Neither the name nor the IP address of the"
1346 " cluster has changed")
1347 if new_ip != old_ip:
1348 if utils.TcpPing(new_ip, constants.DEFAULT_NODED_PORT):
1349 raise errors.OpPrereqError("The given cluster IP address (%s) is"
1350 " reachable on the network. Aborting." %
1353 self.op.name = new_name
1355 def Exec(self, feedback_fn):
1356 """Rename the cluster.
1359 clustername = self.op.name
1362 # shutdown the master IP
1363 master = self.cfg.GetMasterNode()
1364 result = self.rpc.call_node_stop_master(master, False)
1365 if result.failed or not result.data:
1366 raise errors.OpExecError("Could not disable the master role")
1369 cluster = self.cfg.GetClusterInfo()
1370 cluster.cluster_name = clustername
1371 cluster.master_ip = ip
1372 self.cfg.Update(cluster)
1374 # update the known hosts file
1375 ssh.WriteKnownHostsFile(self.cfg, constants.SSH_KNOWN_HOSTS_FILE)
1376 node_list = self.cfg.GetNodeList()
1378 node_list.remove(master)
1381 result = self.rpc.call_upload_file(node_list,
1382 constants.SSH_KNOWN_HOSTS_FILE)
1383 for to_node, to_result in result.iteritems():
1384 msg = to_result.RemoteFailMsg()
1386 msg = ("Copy of file %s to node %s failed: %s" %
1387 (constants.SSH_KNOWN_HOSTS_FILE, to_node, msg))
1388 self.proc.LogWarning(msg)
1391 result = self.rpc.call_node_start_master(master, False)
1392 if result.failed or not result.data:
1393 self.LogWarning("Could not re-enable the master role on"
1394 " the master, please restart manually.")
1397 def _RecursiveCheckIfLVMBased(disk):
1398 """Check if the given disk or its children are lvm-based.
1400 @type disk: L{objects.Disk}
1401 @param disk: the disk to check
1403 @return: boolean indicating whether a LD_LV dev_type was found or not
1407 for chdisk in disk.children:
1408 if _RecursiveCheckIfLVMBased(chdisk):
1410 return disk.dev_type == constants.LD_LV
1413 class LUSetClusterParams(LogicalUnit):
1414 """Change the parameters of the cluster.
1417 HPATH = "cluster-modify"
1418 HTYPE = constants.HTYPE_CLUSTER
1422 def CheckArguments(self):
1426 if not hasattr(self.op, "candidate_pool_size"):
1427 self.op.candidate_pool_size = None
1428 if self.op.candidate_pool_size is not None:
1430 self.op.candidate_pool_size = int(self.op.candidate_pool_size)
1431 except (ValueError, TypeError), err:
1432 raise errors.OpPrereqError("Invalid candidate_pool_size value: %s" %
1434 if self.op.candidate_pool_size < 1:
1435 raise errors.OpPrereqError("At least one master candidate needed")
1437 def ExpandNames(self):
1438 # FIXME: in the future maybe other cluster params won't require checking on
1439 # all nodes to be modified.
1440 self.needed_locks = {
1441 locking.LEVEL_NODE: locking.ALL_SET,
1443 self.share_locks[locking.LEVEL_NODE] = 1
1445 def BuildHooksEnv(self):
1450 "OP_TARGET": self.cfg.GetClusterName(),
1451 "NEW_VG_NAME": self.op.vg_name,
1453 mn = self.cfg.GetMasterNode()
1454 return env, [mn], [mn]
1456 def CheckPrereq(self):
1457 """Check prerequisites.
1459 This checks whether the given params don't conflict and
1460 if the given volume group is valid.
1463 if self.op.vg_name is not None and not self.op.vg_name:
1464 instances = self.cfg.GetAllInstancesInfo().values()
1465 for inst in instances:
1466 for disk in inst.disks:
1467 if _RecursiveCheckIfLVMBased(disk):
1468 raise errors.OpPrereqError("Cannot disable lvm storage while"
1469 " lvm-based instances exist")
1471 node_list = self.acquired_locks[locking.LEVEL_NODE]
1473 # if vg_name not None, checks given volume group on all nodes
1475 vglist = self.rpc.call_vg_list(node_list)
1476 for node in node_list:
1477 if vglist[node].failed:
1478 # ignoring down node
1479 self.LogWarning("Node %s unreachable/error, ignoring" % node)
1481 vgstatus = utils.CheckVolumeGroupSize(vglist[node].data,
1483 constants.MIN_VG_SIZE)
1485 raise errors.OpPrereqError("Error on node '%s': %s" %
1488 self.cluster = cluster = self.cfg.GetClusterInfo()
1489 # validate beparams changes
1490 if self.op.beparams:
1491 utils.ForceDictType(self.op.beparams, constants.BES_PARAMETER_TYPES)
1492 self.new_beparams = cluster.FillDict(
1493 cluster.beparams[constants.BEGR_DEFAULT], self.op.beparams)
1495 # hypervisor list/parameters
1496 self.new_hvparams = cluster.FillDict(cluster.hvparams, {})
1497 if self.op.hvparams:
1498 if not isinstance(self.op.hvparams, dict):
1499 raise errors.OpPrereqError("Invalid 'hvparams' parameter on input")
1500 for hv_name, hv_dict in self.op.hvparams.items():
1501 if hv_name not in self.new_hvparams:
1502 self.new_hvparams[hv_name] = hv_dict
1504 self.new_hvparams[hv_name].update(hv_dict)
1506 if self.op.enabled_hypervisors is not None:
1507 self.hv_list = self.op.enabled_hypervisors
1509 self.hv_list = cluster.enabled_hypervisors
1511 if self.op.hvparams or self.op.enabled_hypervisors is not None:
1512 # either the enabled list has changed, or the parameters have, validate
1513 for hv_name, hv_params in self.new_hvparams.items():
1514 if ((self.op.hvparams and hv_name in self.op.hvparams) or
1515 (self.op.enabled_hypervisors and
1516 hv_name in self.op.enabled_hypervisors)):
1517 # either this is a new hypervisor, or its parameters have changed
1518 hv_class = hypervisor.GetHypervisor(hv_name)
1519 utils.ForceDictType(hv_params, constants.HVS_PARAMETER_TYPES)
1520 hv_class.CheckParameterSyntax(hv_params)
1521 _CheckHVParams(self, node_list, hv_name, hv_params)
1523 def Exec(self, feedback_fn):
1524 """Change the parameters of the cluster.
1527 if self.op.vg_name is not None:
1528 new_volume = self.op.vg_name
1531 if new_volume != self.cfg.GetVGName():
1532 self.cfg.SetVGName(new_volume)
1534 feedback_fn("Cluster LVM configuration already in desired"
1535 " state, not changing")
1536 if self.op.hvparams:
1537 self.cluster.hvparams = self.new_hvparams
1538 if self.op.enabled_hypervisors is not None:
1539 self.cluster.enabled_hypervisors = self.op.enabled_hypervisors
1540 if self.op.beparams:
1541 self.cluster.beparams[constants.BEGR_DEFAULT] = self.new_beparams
1542 if self.op.candidate_pool_size is not None:
1543 self.cluster.candidate_pool_size = self.op.candidate_pool_size
1545 self.cfg.Update(self.cluster)
1547 # we want to update nodes after the cluster so that if any errors
1548 # happen, we have recorded and saved the cluster info
1549 if self.op.candidate_pool_size is not None:
1550 _AdjustCandidatePool(self)
1553 def _RedistributeAncillaryFiles(lu, additional_nodes=None):
1554 """Distribute additional files which are part of the cluster configuration.
1556 ConfigWriter takes care of distributing the config and ssconf files, but
1557 there are more files which should be distributed to all nodes. This function
1558 makes sure those are copied.
1560 @param lu: calling logical unit
1561 @param additional_nodes: list of nodes not in the config to distribute to
1564 # 1. Gather target nodes
1565 myself = lu.cfg.GetNodeInfo(lu.cfg.GetMasterNode())
1566 dist_nodes = lu.cfg.GetNodeList()
1567 if additional_nodes is not None:
1568 dist_nodes.extend(additional_nodes)
1569 if myself.name in dist_nodes:
1570 dist_nodes.remove(myself.name)
1571 # 2. Gather files to distribute
1572 dist_files = set([constants.ETC_HOSTS,
1573 constants.SSH_KNOWN_HOSTS_FILE,
1574 constants.RAPI_CERT_FILE,
1575 constants.RAPI_USERS_FILE,
1578 enabled_hypervisors = lu.cfg.GetClusterInfo().enabled_hypervisors
1579 for hv_name in enabled_hypervisors:
1580 hv_class = hypervisor.GetHypervisor(hv_name)
1581 dist_files.update(hv_class.GetAncillaryFiles())
1583 # 3. Perform the files upload
1584 for fname in dist_files:
1585 if os.path.exists(fname):
1586 result = lu.rpc.call_upload_file(dist_nodes, fname)
1587 for to_node, to_result in result.items():
1588 msg = to_result.RemoteFailMsg()
1590 msg = ("Copy of file %s to node %s failed: %s" %
1591 (fname, to_node, msg))
1592 lu.proc.LogWarning(msg)
1595 class LURedistributeConfig(NoHooksLU):
1596 """Force the redistribution of cluster configuration.
1598 This is a very simple LU.
1604 def ExpandNames(self):
1605 self.needed_locks = {
1606 locking.LEVEL_NODE: locking.ALL_SET,
1608 self.share_locks[locking.LEVEL_NODE] = 1
1610 def CheckPrereq(self):
1611 """Check prerequisites.
1615 def Exec(self, feedback_fn):
1616 """Redistribute the configuration.
1619 self.cfg.Update(self.cfg.GetClusterInfo())
1620 _RedistributeAncillaryFiles(self)
1623 def _WaitForSync(lu, instance, oneshot=False, unlock=False):
1624 """Sleep and poll for an instance's disk to sync.
1627 if not instance.disks:
1631 lu.proc.LogInfo("Waiting for instance %s to sync disks." % instance.name)
1633 node = instance.primary_node
1635 for dev in instance.disks:
1636 lu.cfg.SetDiskID(dev, node)
1642 cumul_degraded = False
1643 rstats = lu.rpc.call_blockdev_getmirrorstatus(node, instance.disks)
1644 if rstats.failed or not rstats.data:
1645 lu.LogWarning("Can't get any data from node %s", node)
1648 raise errors.RemoteError("Can't contact node %s for mirror data,"
1649 " aborting." % node)
1652 rstats = rstats.data
1654 for i, mstat in enumerate(rstats):
1656 lu.LogWarning("Can't compute data for node %s/%s",
1657 node, instance.disks[i].iv_name)
1659 # we ignore the ldisk parameter
1660 perc_done, est_time, is_degraded, _ = mstat
1661 cumul_degraded = cumul_degraded or (is_degraded and perc_done is None)
1662 if perc_done is not None:
1664 if est_time is not None:
1665 rem_time = "%d estimated seconds remaining" % est_time
1668 rem_time = "no time estimate"
1669 lu.proc.LogInfo("- device %s: %5.2f%% done, %s" %
1670 (instance.disks[i].iv_name, perc_done, rem_time))
1674 time.sleep(min(60, max_time))
1677 lu.proc.LogInfo("Instance %s's disks are in sync." % instance.name)
1678 return not cumul_degraded
1681 def _CheckDiskConsistency(lu, dev, node, on_primary, ldisk=False):
1682 """Check that mirrors are not degraded.
1684 The ldisk parameter, if True, will change the test from the
1685 is_degraded attribute (which represents overall non-ok status for
1686 the device(s)) to the ldisk (representing the local storage status).
1689 lu.cfg.SetDiskID(dev, node)
1696 if on_primary or dev.AssembleOnSecondary():
1697 rstats = lu.rpc.call_blockdev_find(node, dev)
1698 msg = rstats.RemoteFailMsg()
1700 lu.LogWarning("Can't find disk on node %s: %s", node, msg)
1702 elif not rstats.payload:
1703 lu.LogWarning("Can't find disk on node %s", node)
1706 result = result and (not rstats.payload[idx])
1708 for child in dev.children:
1709 result = result and _CheckDiskConsistency(lu, child, node, on_primary)
1714 class LUDiagnoseOS(NoHooksLU):
1715 """Logical unit for OS diagnose/query.
1718 _OP_REQP = ["output_fields", "names"]
1720 _FIELDS_STATIC = utils.FieldSet()
1721 _FIELDS_DYNAMIC = utils.FieldSet("name", "valid", "node_status")
1723 def ExpandNames(self):
1725 raise errors.OpPrereqError("Selective OS query not supported")
1727 _CheckOutputFields(static=self._FIELDS_STATIC,
1728 dynamic=self._FIELDS_DYNAMIC,
1729 selected=self.op.output_fields)
1731 # Lock all nodes, in shared mode
1732 # Temporary removal of locks, should be reverted later
1733 # TODO: reintroduce locks when they are lighter-weight
1734 self.needed_locks = {}
1735 #self.share_locks[locking.LEVEL_NODE] = 1
1736 #self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
1738 def CheckPrereq(self):
1739 """Check prerequisites.
1744 def _DiagnoseByOS(node_list, rlist):
1745 """Remaps a per-node return list into an a per-os per-node dictionary
1747 @param node_list: a list with the names of all nodes
1748 @param rlist: a map with node names as keys and OS objects as values
1751 @return: a dictionary with osnames as keys and as value another map, with
1752 nodes as keys and list of OS objects as values, eg::
1754 {"debian-etch": {"node1": [<object>,...],
1755 "node2": [<object>,]}
1760 # we build here the list of nodes that didn't fail the RPC (at RPC
1761 # level), so that nodes with a non-responding node daemon don't
1762 # make all OSes invalid
1763 good_nodes = [node_name for node_name in rlist
1764 if not rlist[node_name].failed]
1765 for node_name, nr in rlist.iteritems():
1766 if nr.failed or not nr.data:
1768 for os_obj in nr.data:
1769 if os_obj.name not in all_os:
1770 # build a list of nodes for this os containing empty lists
1771 # for each node in node_list
1772 all_os[os_obj.name] = {}
1773 for nname in good_nodes:
1774 all_os[os_obj.name][nname] = []
1775 all_os[os_obj.name][node_name].append(os_obj)
1778 def Exec(self, feedback_fn):
1779 """Compute the list of OSes.
1782 valid_nodes = [node for node in self.cfg.GetOnlineNodeList()]
1783 node_data = self.rpc.call_os_diagnose(valid_nodes)
1784 if node_data == False:
1785 raise errors.OpExecError("Can't gather the list of OSes")
1786 pol = self._DiagnoseByOS(valid_nodes, node_data)
1788 for os_name, os_data in pol.iteritems():
1790 for field in self.op.output_fields:
1793 elif field == "valid":
1794 val = utils.all([osl and osl[0] for osl in os_data.values()])
1795 elif field == "node_status":
1797 for node_name, nos_list in os_data.iteritems():
1798 val[node_name] = [(v.status, v.path) for v in nos_list]
1800 raise errors.ParameterError(field)
1807 class LURemoveNode(LogicalUnit):
1808 """Logical unit for removing a node.
1811 HPATH = "node-remove"
1812 HTYPE = constants.HTYPE_NODE
1813 _OP_REQP = ["node_name"]
1815 def BuildHooksEnv(self):
1818 This doesn't run on the target node in the pre phase as a failed
1819 node would then be impossible to remove.
1823 "OP_TARGET": self.op.node_name,
1824 "NODE_NAME": self.op.node_name,
1826 all_nodes = self.cfg.GetNodeList()
1827 all_nodes.remove(self.op.node_name)
1828 return env, all_nodes, all_nodes
1830 def CheckPrereq(self):
1831 """Check prerequisites.
1834 - the node exists in the configuration
1835 - it does not have primary or secondary instances
1836 - it's not the master
1838 Any errors are signalled by raising errors.OpPrereqError.
1841 node = self.cfg.GetNodeInfo(self.cfg.ExpandNodeName(self.op.node_name))
1843 raise errors.OpPrereqError, ("Node '%s' is unknown." % self.op.node_name)
1845 instance_list = self.cfg.GetInstanceList()
1847 masternode = self.cfg.GetMasterNode()
1848 if node.name == masternode:
1849 raise errors.OpPrereqError("Node is the master node,"
1850 " you need to failover first.")
1852 for instance_name in instance_list:
1853 instance = self.cfg.GetInstanceInfo(instance_name)
1854 if node.name in instance.all_nodes:
1855 raise errors.OpPrereqError("Instance %s is still running on the node,"
1856 " please remove first." % instance_name)
1857 self.op.node_name = node.name
1860 def Exec(self, feedback_fn):
1861 """Removes the node from the cluster.
1865 logging.info("Stopping the node daemon and removing configs from node %s",
1868 self.context.RemoveNode(node.name)
1870 self.rpc.call_node_leave_cluster(node.name)
1872 # Promote nodes to master candidate as needed
1873 _AdjustCandidatePool(self)
1876 class LUQueryNodes(NoHooksLU):
1877 """Logical unit for querying nodes.
1880 _OP_REQP = ["output_fields", "names", "use_locking"]
1882 _FIELDS_DYNAMIC = utils.FieldSet(
1884 "mtotal", "mnode", "mfree",
1886 "ctotal", "cnodes", "csockets",
1889 _FIELDS_STATIC = utils.FieldSet(
1890 "name", "pinst_cnt", "sinst_cnt",
1891 "pinst_list", "sinst_list",
1892 "pip", "sip", "tags",
1900 def ExpandNames(self):
1901 _CheckOutputFields(static=self._FIELDS_STATIC,
1902 dynamic=self._FIELDS_DYNAMIC,
1903 selected=self.op.output_fields)
1905 self.needed_locks = {}
1906 self.share_locks[locking.LEVEL_NODE] = 1
1909 self.wanted = _GetWantedNodes(self, self.op.names)
1911 self.wanted = locking.ALL_SET
1913 self.do_node_query = self._FIELDS_STATIC.NonMatching(self.op.output_fields)
1914 self.do_locking = self.do_node_query and self.op.use_locking
1916 # if we don't request only static fields, we need to lock the nodes
1917 self.needed_locks[locking.LEVEL_NODE] = self.wanted
1920 def CheckPrereq(self):
1921 """Check prerequisites.
1924 # The validation of the node list is done in the _GetWantedNodes,
1925 # if non empty, and if empty, there's no validation to do
1928 def Exec(self, feedback_fn):
1929 """Computes the list of nodes and their attributes.
1932 all_info = self.cfg.GetAllNodesInfo()
1934 nodenames = self.acquired_locks[locking.LEVEL_NODE]
1935 elif self.wanted != locking.ALL_SET:
1936 nodenames = self.wanted
1937 missing = set(nodenames).difference(all_info.keys())
1939 raise errors.OpExecError(
1940 "Some nodes were removed before retrieving their data: %s" % missing)
1942 nodenames = all_info.keys()
1944 nodenames = utils.NiceSort(nodenames)
1945 nodelist = [all_info[name] for name in nodenames]
1947 # begin data gathering
1949 if self.do_node_query:
1951 node_data = self.rpc.call_node_info(nodenames, self.cfg.GetVGName(),
1952 self.cfg.GetHypervisorType())
1953 for name in nodenames:
1954 nodeinfo = node_data[name]
1955 if not nodeinfo.failed and nodeinfo.data:
1956 nodeinfo = nodeinfo.data
1957 fn = utils.TryConvert
1959 "mtotal": fn(int, nodeinfo.get('memory_total', None)),
1960 "mnode": fn(int, nodeinfo.get('memory_dom0', None)),
1961 "mfree": fn(int, nodeinfo.get('memory_free', None)),
1962 "dtotal": fn(int, nodeinfo.get('vg_size', None)),
1963 "dfree": fn(int, nodeinfo.get('vg_free', None)),
1964 "ctotal": fn(int, nodeinfo.get('cpu_total', None)),
1965 "bootid": nodeinfo.get('bootid', None),
1966 "cnodes": fn(int, nodeinfo.get('cpu_nodes', None)),
1967 "csockets": fn(int, nodeinfo.get('cpu_sockets', None)),
1970 live_data[name] = {}
1972 live_data = dict.fromkeys(nodenames, {})
1974 node_to_primary = dict([(name, set()) for name in nodenames])
1975 node_to_secondary = dict([(name, set()) for name in nodenames])
1977 inst_fields = frozenset(("pinst_cnt", "pinst_list",
1978 "sinst_cnt", "sinst_list"))
1979 if inst_fields & frozenset(self.op.output_fields):
1980 instancelist = self.cfg.GetInstanceList()
1982 for instance_name in instancelist:
1983 inst = self.cfg.GetInstanceInfo(instance_name)
1984 if inst.primary_node in node_to_primary:
1985 node_to_primary[inst.primary_node].add(inst.name)
1986 for secnode in inst.secondary_nodes:
1987 if secnode in node_to_secondary:
1988 node_to_secondary[secnode].add(inst.name)
1990 master_node = self.cfg.GetMasterNode()
1992 # end data gathering
1995 for node in nodelist:
1997 for field in self.op.output_fields:
2000 elif field == "pinst_list":
2001 val = list(node_to_primary[node.name])
2002 elif field == "sinst_list":
2003 val = list(node_to_secondary[node.name])
2004 elif field == "pinst_cnt":
2005 val = len(node_to_primary[node.name])
2006 elif field == "sinst_cnt":
2007 val = len(node_to_secondary[node.name])
2008 elif field == "pip":
2009 val = node.primary_ip
2010 elif field == "sip":
2011 val = node.secondary_ip
2012 elif field == "tags":
2013 val = list(node.GetTags())
2014 elif field == "serial_no":
2015 val = node.serial_no
2016 elif field == "master_candidate":
2017 val = node.master_candidate
2018 elif field == "master":
2019 val = node.name == master_node
2020 elif field == "offline":
2022 elif field == "drained":
2024 elif self._FIELDS_DYNAMIC.Matches(field):
2025 val = live_data[node.name].get(field, None)
2027 raise errors.ParameterError(field)
2028 node_output.append(val)
2029 output.append(node_output)
2034 class LUQueryNodeVolumes(NoHooksLU):
2035 """Logical unit for getting volumes on node(s).
2038 _OP_REQP = ["nodes", "output_fields"]
2040 _FIELDS_DYNAMIC = utils.FieldSet("phys", "vg", "name", "size", "instance")
2041 _FIELDS_STATIC = utils.FieldSet("node")
2043 def ExpandNames(self):
2044 _CheckOutputFields(static=self._FIELDS_STATIC,
2045 dynamic=self._FIELDS_DYNAMIC,
2046 selected=self.op.output_fields)
2048 self.needed_locks = {}
2049 self.share_locks[locking.LEVEL_NODE] = 1
2050 if not self.op.nodes:
2051 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
2053 self.needed_locks[locking.LEVEL_NODE] = \
2054 _GetWantedNodes(self, self.op.nodes)
2056 def CheckPrereq(self):
2057 """Check prerequisites.
2059 This checks that the fields required are valid output fields.
2062 self.nodes = self.acquired_locks[locking.LEVEL_NODE]
2064 def Exec(self, feedback_fn):
2065 """Computes the list of nodes and their attributes.
2068 nodenames = self.nodes
2069 volumes = self.rpc.call_node_volumes(nodenames)
2071 ilist = [self.cfg.GetInstanceInfo(iname) for iname
2072 in self.cfg.GetInstanceList()]
2074 lv_by_node = dict([(inst, inst.MapLVsByNode()) for inst in ilist])
2077 for node in nodenames:
2078 if node not in volumes or volumes[node].failed or not volumes[node].data:
2081 node_vols = volumes[node].data[:]
2082 node_vols.sort(key=lambda vol: vol['dev'])
2084 for vol in node_vols:
2086 for field in self.op.output_fields:
2089 elif field == "phys":
2093 elif field == "name":
2095 elif field == "size":
2096 val = int(float(vol['size']))
2097 elif field == "instance":
2099 if node not in lv_by_node[inst]:
2101 if vol['name'] in lv_by_node[inst][node]:
2107 raise errors.ParameterError(field)
2108 node_output.append(str(val))
2110 output.append(node_output)
2115 class LUAddNode(LogicalUnit):
2116 """Logical unit for adding node to the cluster.
2120 HTYPE = constants.HTYPE_NODE
2121 _OP_REQP = ["node_name"]
2123 def BuildHooksEnv(self):
2126 This will run on all nodes before, and on all nodes + the new node after.
2130 "OP_TARGET": self.op.node_name,
2131 "NODE_NAME": self.op.node_name,
2132 "NODE_PIP": self.op.primary_ip,
2133 "NODE_SIP": self.op.secondary_ip,
2135 nodes_0 = self.cfg.GetNodeList()
2136 nodes_1 = nodes_0 + [self.op.node_name, ]
2137 return env, nodes_0, nodes_1
2139 def CheckPrereq(self):
2140 """Check prerequisites.
2143 - the new node is not already in the config
2145 - its parameters (single/dual homed) matches the cluster
2147 Any errors are signalled by raising errors.OpPrereqError.
2150 node_name = self.op.node_name
2153 dns_data = utils.HostInfo(node_name)
2155 node = dns_data.name
2156 primary_ip = self.op.primary_ip = dns_data.ip
2157 secondary_ip = getattr(self.op, "secondary_ip", None)
2158 if secondary_ip is None:
2159 secondary_ip = primary_ip
2160 if not utils.IsValidIP(secondary_ip):
2161 raise errors.OpPrereqError("Invalid secondary IP given")
2162 self.op.secondary_ip = secondary_ip
2164 node_list = cfg.GetNodeList()
2165 if not self.op.readd and node in node_list:
2166 raise errors.OpPrereqError("Node %s is already in the configuration" %
2168 elif self.op.readd and node not in node_list:
2169 raise errors.OpPrereqError("Node %s is not in the configuration" % node)
2171 for existing_node_name in node_list:
2172 existing_node = cfg.GetNodeInfo(existing_node_name)
2174 if self.op.readd and node == existing_node_name:
2175 if (existing_node.primary_ip != primary_ip or
2176 existing_node.secondary_ip != secondary_ip):
2177 raise errors.OpPrereqError("Readded node doesn't have the same IP"
2178 " address configuration as before")
2181 if (existing_node.primary_ip == primary_ip or
2182 existing_node.secondary_ip == primary_ip or
2183 existing_node.primary_ip == secondary_ip or
2184 existing_node.secondary_ip == secondary_ip):
2185 raise errors.OpPrereqError("New node ip address(es) conflict with"
2186 " existing node %s" % existing_node.name)
2188 # check that the type of the node (single versus dual homed) is the
2189 # same as for the master
2190 myself = cfg.GetNodeInfo(self.cfg.GetMasterNode())
2191 master_singlehomed = myself.secondary_ip == myself.primary_ip
2192 newbie_singlehomed = secondary_ip == primary_ip
2193 if master_singlehomed != newbie_singlehomed:
2194 if master_singlehomed:
2195 raise errors.OpPrereqError("The master has no private ip but the"
2196 " new node has one")
2198 raise errors.OpPrereqError("The master has a private ip but the"
2199 " new node doesn't have one")
2201 # checks reachablity
2202 if not utils.TcpPing(primary_ip, constants.DEFAULT_NODED_PORT):
2203 raise errors.OpPrereqError("Node not reachable by ping")
2205 if not newbie_singlehomed:
2206 # check reachability from my secondary ip to newbie's secondary ip
2207 if not utils.TcpPing(secondary_ip, constants.DEFAULT_NODED_PORT,
2208 source=myself.secondary_ip):
2209 raise errors.OpPrereqError("Node secondary ip not reachable by TCP"
2210 " based ping to noded port")
2212 cp_size = self.cfg.GetClusterInfo().candidate_pool_size
2213 mc_now, _ = self.cfg.GetMasterCandidateStats()
2214 master_candidate = mc_now < cp_size
2216 self.new_node = objects.Node(name=node,
2217 primary_ip=primary_ip,
2218 secondary_ip=secondary_ip,
2219 master_candidate=master_candidate,
2220 offline=False, drained=False)
2222 def Exec(self, feedback_fn):
2223 """Adds the new node to the cluster.
2226 new_node = self.new_node
2227 node = new_node.name
2229 # check connectivity
2230 result = self.rpc.call_version([node])[node]
2233 if constants.PROTOCOL_VERSION == result.data:
2234 logging.info("Communication to node %s fine, sw version %s match",
2237 raise errors.OpExecError("Version mismatch master version %s,"
2238 " node version %s" %
2239 (constants.PROTOCOL_VERSION, result.data))
2241 raise errors.OpExecError("Cannot get version from the new node")
2244 logging.info("Copy ssh key to node %s", node)
2245 priv_key, pub_key, _ = ssh.GetUserFiles(constants.GANETI_RUNAS)
2247 keyfiles = [constants.SSH_HOST_DSA_PRIV, constants.SSH_HOST_DSA_PUB,
2248 constants.SSH_HOST_RSA_PRIV, constants.SSH_HOST_RSA_PUB,
2254 keyarray.append(f.read())
2258 result = self.rpc.call_node_add(node, keyarray[0], keyarray[1],
2260 keyarray[3], keyarray[4], keyarray[5])
2262 msg = result.RemoteFailMsg()
2264 raise errors.OpExecError("Cannot transfer ssh keys to the"
2265 " new node: %s" % msg)
2267 # Add node to our /etc/hosts, and add key to known_hosts
2268 utils.AddHostToEtcHosts(new_node.name)
2270 if new_node.secondary_ip != new_node.primary_ip:
2271 result = self.rpc.call_node_has_ip_address(new_node.name,
2272 new_node.secondary_ip)
2273 if result.failed or not result.data:
2274 raise errors.OpExecError("Node claims it doesn't have the secondary ip"
2275 " you gave (%s). Please fix and re-run this"
2276 " command." % new_node.secondary_ip)
2278 node_verify_list = [self.cfg.GetMasterNode()]
2279 node_verify_param = {
2281 # TODO: do a node-net-test as well?
2284 result = self.rpc.call_node_verify(node_verify_list, node_verify_param,
2285 self.cfg.GetClusterName())
2286 for verifier in node_verify_list:
2287 if result[verifier].failed or not result[verifier].data:
2288 raise errors.OpExecError("Cannot communicate with %s's node daemon"
2289 " for remote verification" % verifier)
2290 if result[verifier].data['nodelist']:
2291 for failed in result[verifier].data['nodelist']:
2292 feedback_fn("ssh/hostname verification failed %s -> %s" %
2293 (verifier, result[verifier].data['nodelist'][failed]))
2294 raise errors.OpExecError("ssh/hostname verification failed.")
2297 _RedistributeAncillaryFiles(self)
2298 self.context.ReaddNode(new_node)
2300 _RedistributeAncillaryFiles(self, additional_nodes=node)
2301 self.context.AddNode(new_node)
2304 class LUSetNodeParams(LogicalUnit):
2305 """Modifies the parameters of a node.
2308 HPATH = "node-modify"
2309 HTYPE = constants.HTYPE_NODE
2310 _OP_REQP = ["node_name"]
2313 def CheckArguments(self):
2314 node_name = self.cfg.ExpandNodeName(self.op.node_name)
2315 if node_name is None:
2316 raise errors.OpPrereqError("Invalid node name '%s'" % self.op.node_name)
2317 self.op.node_name = node_name
2318 _CheckBooleanOpField(self.op, 'master_candidate')
2319 _CheckBooleanOpField(self.op, 'offline')
2320 _CheckBooleanOpField(self.op, 'drained')
2321 all_mods = [self.op.offline, self.op.master_candidate, self.op.drained]
2322 if all_mods.count(None) == 3:
2323 raise errors.OpPrereqError("Please pass at least one modification")
2324 if all_mods.count(True) > 1:
2325 raise errors.OpPrereqError("Can't set the node into more than one"
2326 " state at the same time")
2328 def ExpandNames(self):
2329 self.needed_locks = {locking.LEVEL_NODE: self.op.node_name}
2331 def BuildHooksEnv(self):
2334 This runs on the master node.
2338 "OP_TARGET": self.op.node_name,
2339 "MASTER_CANDIDATE": str(self.op.master_candidate),
2340 "OFFLINE": str(self.op.offline),
2341 "DRAINED": str(self.op.drained),
2343 nl = [self.cfg.GetMasterNode(),
2347 def CheckPrereq(self):
2348 """Check prerequisites.
2350 This only checks the instance list against the existing names.
2353 node = self.node = self.cfg.GetNodeInfo(self.op.node_name)
2355 if ((self.op.master_candidate == False or self.op.offline == True or
2356 self.op.drained == True) and node.master_candidate):
2357 # we will demote the node from master_candidate
2358 if self.op.node_name == self.cfg.GetMasterNode():
2359 raise errors.OpPrereqError("The master node has to be a"
2360 " master candidate, online and not drained")
2361 cp_size = self.cfg.GetClusterInfo().candidate_pool_size
2362 num_candidates, _ = self.cfg.GetMasterCandidateStats()
2363 if num_candidates <= cp_size:
2364 msg = ("Not enough master candidates (desired"
2365 " %d, new value will be %d)" % (cp_size, num_candidates-1))
2367 self.LogWarning(msg)
2369 raise errors.OpPrereqError(msg)
2371 if (self.op.master_candidate == True and
2372 ((node.offline and not self.op.offline == False) or
2373 (node.drained and not self.op.drained == False))):
2374 raise errors.OpPrereqError("Node '%s' is offline or drained, can't set"
2375 " to master_candidate" % node.name)
2379 def Exec(self, feedback_fn):
2388 if self.op.offline is not None:
2389 node.offline = self.op.offline
2390 result.append(("offline", str(self.op.offline)))
2391 if self.op.offline == True:
2392 if node.master_candidate:
2393 node.master_candidate = False
2395 result.append(("master_candidate", "auto-demotion due to offline"))
2397 node.drained = False
2398 result.append(("drained", "clear drained status due to offline"))
2400 if self.op.master_candidate is not None:
2401 node.master_candidate = self.op.master_candidate
2403 result.append(("master_candidate", str(self.op.master_candidate)))
2404 if self.op.master_candidate == False:
2405 rrc = self.rpc.call_node_demote_from_mc(node.name)
2406 msg = rrc.RemoteFailMsg()
2408 self.LogWarning("Node failed to demote itself: %s" % msg)
2410 if self.op.drained is not None:
2411 node.drained = self.op.drained
2412 result.append(("drained", str(self.op.drained)))
2413 if self.op.drained == True:
2414 if node.master_candidate:
2415 node.master_candidate = False
2417 result.append(("master_candidate", "auto-demotion due to drain"))
2419 node.offline = False
2420 result.append(("offline", "clear offline status due to drain"))
2422 # this will trigger configuration file update, if needed
2423 self.cfg.Update(node)
2424 # this will trigger job queue propagation or cleanup
2426 self.context.ReaddNode(node)
2431 class LUPowercycleNode(NoHooksLU):
2432 """Powercycles a node.
2435 _OP_REQP = ["node_name", "force"]
2438 def CheckArguments(self):
2439 node_name = self.cfg.ExpandNodeName(self.op.node_name)
2440 if node_name is None:
2441 raise errors.OpPrereqError("Invalid node name '%s'" % self.op.node_name)
2442 self.op.node_name = node_name
2443 if node_name == self.cfg.GetMasterNode() and not self.op.force:
2444 raise errors.OpPrereqError("The node is the master and the force"
2445 " parameter was not set")
2447 def ExpandNames(self):
2448 """Locking for PowercycleNode.
2450 This is a last-resource option and shouldn't block on other
2451 jobs. Therefore, we grab no locks.
2454 self.needed_locks = {}
2456 def CheckPrereq(self):
2457 """Check prerequisites.
2459 This LU has no prereqs.
2464 def Exec(self, feedback_fn):
2468 result = self.rpc.call_node_powercycle(self.op.node_name,
2469 self.cfg.GetHypervisorType())
2470 msg = result.RemoteFailMsg()
2472 raise errors.OpExecError("Failed to schedule the reboot: %s" % msg)
2473 return result.payload
2476 class LUQueryClusterInfo(NoHooksLU):
2477 """Query cluster configuration.
2483 def ExpandNames(self):
2484 self.needed_locks = {}
2486 def CheckPrereq(self):
2487 """No prerequsites needed for this LU.
2492 def Exec(self, feedback_fn):
2493 """Return cluster config.
2496 cluster = self.cfg.GetClusterInfo()
2498 "software_version": constants.RELEASE_VERSION,
2499 "protocol_version": constants.PROTOCOL_VERSION,
2500 "config_version": constants.CONFIG_VERSION,
2501 "os_api_version": constants.OS_API_VERSION,
2502 "export_version": constants.EXPORT_VERSION,
2503 "architecture": (platform.architecture()[0], platform.machine()),
2504 "name": cluster.cluster_name,
2505 "master": cluster.master_node,
2506 "default_hypervisor": cluster.default_hypervisor,
2507 "enabled_hypervisors": cluster.enabled_hypervisors,
2508 "hvparams": dict([(hypervisor, cluster.hvparams[hypervisor])
2509 for hypervisor in cluster.enabled_hypervisors]),
2510 "beparams": cluster.beparams,
2511 "candidate_pool_size": cluster.candidate_pool_size,
2512 "default_bridge": cluster.default_bridge,
2513 "master_netdev": cluster.master_netdev,
2514 "volume_group_name": cluster.volume_group_name,
2515 "file_storage_dir": cluster.file_storage_dir,
2521 class LUQueryConfigValues(NoHooksLU):
2522 """Return configuration values.
2527 _FIELDS_DYNAMIC = utils.FieldSet()
2528 _FIELDS_STATIC = utils.FieldSet("cluster_name", "master_node", "drain_flag")
2530 def ExpandNames(self):
2531 self.needed_locks = {}
2533 _CheckOutputFields(static=self._FIELDS_STATIC,
2534 dynamic=self._FIELDS_DYNAMIC,
2535 selected=self.op.output_fields)
2537 def CheckPrereq(self):
2538 """No prerequisites.
2543 def Exec(self, feedback_fn):
2544 """Dump a representation of the cluster config to the standard output.
2548 for field in self.op.output_fields:
2549 if field == "cluster_name":
2550 entry = self.cfg.GetClusterName()
2551 elif field == "master_node":
2552 entry = self.cfg.GetMasterNode()
2553 elif field == "drain_flag":
2554 entry = os.path.exists(constants.JOB_QUEUE_DRAIN_FILE)
2556 raise errors.ParameterError(field)
2557 values.append(entry)
2561 class LUActivateInstanceDisks(NoHooksLU):
2562 """Bring up an instance's disks.
2565 _OP_REQP = ["instance_name"]
2568 def ExpandNames(self):
2569 self._ExpandAndLockInstance()
2570 self.needed_locks[locking.LEVEL_NODE] = []
2571 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
2573 def DeclareLocks(self, level):
2574 if level == locking.LEVEL_NODE:
2575 self._LockInstancesNodes()
2577 def CheckPrereq(self):
2578 """Check prerequisites.
2580 This checks that the instance is in the cluster.
2583 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2584 assert self.instance is not None, \
2585 "Cannot retrieve locked instance %s" % self.op.instance_name
2586 _CheckNodeOnline(self, self.instance.primary_node)
2588 def Exec(self, feedback_fn):
2589 """Activate the disks.
2592 disks_ok, disks_info = _AssembleInstanceDisks(self, self.instance)
2594 raise errors.OpExecError("Cannot activate block devices")
2599 def _AssembleInstanceDisks(lu, instance, ignore_secondaries=False):
2600 """Prepare the block devices for an instance.
2602 This sets up the block devices on all nodes.
2604 @type lu: L{LogicalUnit}
2605 @param lu: the logical unit on whose behalf we execute
2606 @type instance: L{objects.Instance}
2607 @param instance: the instance for whose disks we assemble
2608 @type ignore_secondaries: boolean
2609 @param ignore_secondaries: if true, errors on secondary nodes
2610 won't result in an error return from the function
2611 @return: False if the operation failed, otherwise a list of
2612 (host, instance_visible_name, node_visible_name)
2613 with the mapping from node devices to instance devices
2618 iname = instance.name
2619 # With the two passes mechanism we try to reduce the window of
2620 # opportunity for the race condition of switching DRBD to primary
2621 # before handshaking occured, but we do not eliminate it
2623 # The proper fix would be to wait (with some limits) until the
2624 # connection has been made and drbd transitions from WFConnection
2625 # into any other network-connected state (Connected, SyncTarget,
2628 # 1st pass, assemble on all nodes in secondary mode
2629 for inst_disk in instance.disks:
2630 for node, node_disk in inst_disk.ComputeNodeTree(instance.primary_node):
2631 lu.cfg.SetDiskID(node_disk, node)
2632 result = lu.rpc.call_blockdev_assemble(node, node_disk, iname, False)
2633 msg = result.RemoteFailMsg()
2635 lu.proc.LogWarning("Could not prepare block device %s on node %s"
2636 " (is_primary=False, pass=1): %s",
2637 inst_disk.iv_name, node, msg)
2638 if not ignore_secondaries:
2641 # FIXME: race condition on drbd migration to primary
2643 # 2nd pass, do only the primary node
2644 for inst_disk in instance.disks:
2645 for node, node_disk in inst_disk.ComputeNodeTree(instance.primary_node):
2646 if node != instance.primary_node:
2648 lu.cfg.SetDiskID(node_disk, node)
2649 result = lu.rpc.call_blockdev_assemble(node, node_disk, iname, True)
2650 msg = result.RemoteFailMsg()
2652 lu.proc.LogWarning("Could not prepare block device %s on node %s"
2653 " (is_primary=True, pass=2): %s",
2654 inst_disk.iv_name, node, msg)
2656 device_info.append((instance.primary_node, inst_disk.iv_name,
2659 # leave the disks configured for the primary node
2660 # this is a workaround that would be fixed better by
2661 # improving the logical/physical id handling
2662 for disk in instance.disks:
2663 lu.cfg.SetDiskID(disk, instance.primary_node)
2665 return disks_ok, device_info
2668 def _StartInstanceDisks(lu, instance, force):
2669 """Start the disks of an instance.
2672 disks_ok, dummy = _AssembleInstanceDisks(lu, instance,
2673 ignore_secondaries=force)
2675 _ShutdownInstanceDisks(lu, instance)
2676 if force is not None and not force:
2677 lu.proc.LogWarning("", hint="If the message above refers to a"
2679 " you can retry the operation using '--force'.")
2680 raise errors.OpExecError("Disk consistency error")
2683 class LUDeactivateInstanceDisks(NoHooksLU):
2684 """Shutdown an instance's disks.
2687 _OP_REQP = ["instance_name"]
2690 def ExpandNames(self):
2691 self._ExpandAndLockInstance()
2692 self.needed_locks[locking.LEVEL_NODE] = []
2693 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
2695 def DeclareLocks(self, level):
2696 if level == locking.LEVEL_NODE:
2697 self._LockInstancesNodes()
2699 def CheckPrereq(self):
2700 """Check prerequisites.
2702 This checks that the instance is in the cluster.
2705 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2706 assert self.instance is not None, \
2707 "Cannot retrieve locked instance %s" % self.op.instance_name
2709 def Exec(self, feedback_fn):
2710 """Deactivate the disks
2713 instance = self.instance
2714 _SafeShutdownInstanceDisks(self, instance)
2717 def _SafeShutdownInstanceDisks(lu, instance):
2718 """Shutdown block devices of an instance.
2720 This function checks if an instance is running, before calling
2721 _ShutdownInstanceDisks.
2724 ins_l = lu.rpc.call_instance_list([instance.primary_node],
2725 [instance.hypervisor])
2726 ins_l = ins_l[instance.primary_node]
2727 if ins_l.failed or not isinstance(ins_l.data, list):
2728 raise errors.OpExecError("Can't contact node '%s'" %
2729 instance.primary_node)
2731 if instance.name in ins_l.data:
2732 raise errors.OpExecError("Instance is running, can't shutdown"
2735 _ShutdownInstanceDisks(lu, instance)
2738 def _ShutdownInstanceDisks(lu, instance, ignore_primary=False):
2739 """Shutdown block devices of an instance.
2741 This does the shutdown on all nodes of the instance.
2743 If the ignore_primary is false, errors on the primary node are
2748 for disk in instance.disks:
2749 for node, top_disk in disk.ComputeNodeTree(instance.primary_node):
2750 lu.cfg.SetDiskID(top_disk, node)
2751 result = lu.rpc.call_blockdev_shutdown(node, top_disk)
2752 msg = result.RemoteFailMsg()
2754 lu.LogWarning("Could not shutdown block device %s on node %s: %s",
2755 disk.iv_name, node, msg)
2756 if not ignore_primary or node != instance.primary_node:
2761 def _CheckNodeFreeMemory(lu, node, reason, requested, hypervisor_name):
2762 """Checks if a node has enough free memory.
2764 This function check if a given node has the needed amount of free
2765 memory. In case the node has less memory or we cannot get the
2766 information from the node, this function raise an OpPrereqError
2769 @type lu: C{LogicalUnit}
2770 @param lu: a logical unit from which we get configuration data
2772 @param node: the node to check
2773 @type reason: C{str}
2774 @param reason: string to use in the error message
2775 @type requested: C{int}
2776 @param requested: the amount of memory in MiB to check for
2777 @type hypervisor_name: C{str}
2778 @param hypervisor_name: the hypervisor to ask for memory stats
2779 @raise errors.OpPrereqError: if the node doesn't have enough memory, or
2780 we cannot check the node
2783 nodeinfo = lu.rpc.call_node_info([node], lu.cfg.GetVGName(), hypervisor_name)
2784 nodeinfo[node].Raise()
2785 free_mem = nodeinfo[node].data.get('memory_free')
2786 if not isinstance(free_mem, int):
2787 raise errors.OpPrereqError("Can't compute free memory on node %s, result"
2788 " was '%s'" % (node, free_mem))
2789 if requested > free_mem:
2790 raise errors.OpPrereqError("Not enough memory on node %s for %s:"
2791 " needed %s MiB, available %s MiB" %
2792 (node, reason, requested, free_mem))
2795 class LUStartupInstance(LogicalUnit):
2796 """Starts an instance.
2799 HPATH = "instance-start"
2800 HTYPE = constants.HTYPE_INSTANCE
2801 _OP_REQP = ["instance_name", "force"]
2804 def ExpandNames(self):
2805 self._ExpandAndLockInstance()
2807 def BuildHooksEnv(self):
2810 This runs on master, primary and secondary nodes of the instance.
2814 "FORCE": self.op.force,
2816 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
2817 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
2820 def CheckPrereq(self):
2821 """Check prerequisites.
2823 This checks that the instance is in the cluster.
2826 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2827 assert self.instance is not None, \
2828 "Cannot retrieve locked instance %s" % self.op.instance_name
2831 self.beparams = getattr(self.op, "beparams", {})
2833 if not isinstance(self.beparams, dict):
2834 raise errors.OpPrereqError("Invalid beparams passed: %s, expected"
2835 " dict" % (type(self.beparams), ))
2836 # fill the beparams dict
2837 utils.ForceDictType(self.beparams, constants.BES_PARAMETER_TYPES)
2838 self.op.beparams = self.beparams
2841 self.hvparams = getattr(self.op, "hvparams", {})
2843 if not isinstance(self.hvparams, dict):
2844 raise errors.OpPrereqError("Invalid hvparams passed: %s, expected"
2845 " dict" % (type(self.hvparams), ))
2847 # check hypervisor parameter syntax (locally)
2848 cluster = self.cfg.GetClusterInfo()
2849 utils.ForceDictType(self.hvparams, constants.HVS_PARAMETER_TYPES)
2850 filled_hvp = cluster.FillDict(cluster.hvparams[instance.hypervisor],
2852 filled_hvp.update(self.hvparams)
2853 hv_type = hypervisor.GetHypervisor(instance.hypervisor)
2854 hv_type.CheckParameterSyntax(filled_hvp)
2855 _CheckHVParams(self, instance.all_nodes, instance.hypervisor, filled_hvp)
2856 self.op.hvparams = self.hvparams
2858 _CheckNodeOnline(self, instance.primary_node)
2860 bep = self.cfg.GetClusterInfo().FillBE(instance)
2861 # check bridges existance
2862 _CheckInstanceBridgesExist(self, instance)
2864 remote_info = self.rpc.call_instance_info(instance.primary_node,
2866 instance.hypervisor)
2868 if not remote_info.data:
2869 _CheckNodeFreeMemory(self, instance.primary_node,
2870 "starting instance %s" % instance.name,
2871 bep[constants.BE_MEMORY], instance.hypervisor)
2873 def Exec(self, feedback_fn):
2874 """Start the instance.
2877 instance = self.instance
2878 force = self.op.force
2880 self.cfg.MarkInstanceUp(instance.name)
2882 node_current = instance.primary_node
2884 _StartInstanceDisks(self, instance, force)
2886 result = self.rpc.call_instance_start(node_current, instance,
2887 self.hvparams, self.beparams)
2888 msg = result.RemoteFailMsg()
2890 _ShutdownInstanceDisks(self, instance)
2891 raise errors.OpExecError("Could not start instance: %s" % msg)
2894 class LURebootInstance(LogicalUnit):
2895 """Reboot an instance.
2898 HPATH = "instance-reboot"
2899 HTYPE = constants.HTYPE_INSTANCE
2900 _OP_REQP = ["instance_name", "ignore_secondaries", "reboot_type"]
2903 def ExpandNames(self):
2904 if self.op.reboot_type not in [constants.INSTANCE_REBOOT_SOFT,
2905 constants.INSTANCE_REBOOT_HARD,
2906 constants.INSTANCE_REBOOT_FULL]:
2907 raise errors.ParameterError("reboot type not in [%s, %s, %s]" %
2908 (constants.INSTANCE_REBOOT_SOFT,
2909 constants.INSTANCE_REBOOT_HARD,
2910 constants.INSTANCE_REBOOT_FULL))
2911 self._ExpandAndLockInstance()
2913 def BuildHooksEnv(self):
2916 This runs on master, primary and secondary nodes of the instance.
2920 "IGNORE_SECONDARIES": self.op.ignore_secondaries,
2921 "REBOOT_TYPE": self.op.reboot_type,
2923 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
2924 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
2927 def CheckPrereq(self):
2928 """Check prerequisites.
2930 This checks that the instance is in the cluster.
2933 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2934 assert self.instance is not None, \
2935 "Cannot retrieve locked instance %s" % self.op.instance_name
2937 _CheckNodeOnline(self, instance.primary_node)
2939 # check bridges existance
2940 _CheckInstanceBridgesExist(self, instance)
2942 def Exec(self, feedback_fn):
2943 """Reboot the instance.
2946 instance = self.instance
2947 ignore_secondaries = self.op.ignore_secondaries
2948 reboot_type = self.op.reboot_type
2950 node_current = instance.primary_node
2952 if reboot_type in [constants.INSTANCE_REBOOT_SOFT,
2953 constants.INSTANCE_REBOOT_HARD]:
2954 for disk in instance.disks:
2955 self.cfg.SetDiskID(disk, node_current)
2956 result = self.rpc.call_instance_reboot(node_current, instance,
2958 msg = result.RemoteFailMsg()
2960 raise errors.OpExecError("Could not reboot instance: %s" % msg)
2962 result = self.rpc.call_instance_shutdown(node_current, instance)
2963 msg = result.RemoteFailMsg()
2965 raise errors.OpExecError("Could not shutdown instance for"
2966 " full reboot: %s" % msg)
2967 _ShutdownInstanceDisks(self, instance)
2968 _StartInstanceDisks(self, instance, ignore_secondaries)
2969 result = self.rpc.call_instance_start(node_current, instance, None, None)
2970 msg = result.RemoteFailMsg()
2972 _ShutdownInstanceDisks(self, instance)
2973 raise errors.OpExecError("Could not start instance for"
2974 " full reboot: %s" % msg)
2976 self.cfg.MarkInstanceUp(instance.name)
2979 class LUShutdownInstance(LogicalUnit):
2980 """Shutdown an instance.
2983 HPATH = "instance-stop"
2984 HTYPE = constants.HTYPE_INSTANCE
2985 _OP_REQP = ["instance_name"]
2988 def ExpandNames(self):
2989 self._ExpandAndLockInstance()
2991 def BuildHooksEnv(self):
2994 This runs on master, primary and secondary nodes of the instance.
2997 env = _BuildInstanceHookEnvByObject(self, self.instance)
2998 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
3001 def CheckPrereq(self):
3002 """Check prerequisites.
3004 This checks that the instance is in the cluster.
3007 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3008 assert self.instance is not None, \
3009 "Cannot retrieve locked instance %s" % self.op.instance_name
3010 _CheckNodeOnline(self, self.instance.primary_node)
3012 def Exec(self, feedback_fn):
3013 """Shutdown the instance.
3016 instance = self.instance
3017 node_current = instance.primary_node
3018 self.cfg.MarkInstanceDown(instance.name)
3019 result = self.rpc.call_instance_shutdown(node_current, instance)
3020 msg = result.RemoteFailMsg()
3022 self.proc.LogWarning("Could not shutdown instance: %s" % msg)
3024 _ShutdownInstanceDisks(self, instance)
3027 class LUReinstallInstance(LogicalUnit):
3028 """Reinstall an instance.
3031 HPATH = "instance-reinstall"
3032 HTYPE = constants.HTYPE_INSTANCE
3033 _OP_REQP = ["instance_name"]
3036 def ExpandNames(self):
3037 self._ExpandAndLockInstance()
3039 def BuildHooksEnv(self):
3042 This runs on master, primary and secondary nodes of the instance.
3045 env = _BuildInstanceHookEnvByObject(self, self.instance)
3046 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
3049 def CheckPrereq(self):
3050 """Check prerequisites.
3052 This checks that the instance is in the cluster and is not running.
3055 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3056 assert instance is not None, \
3057 "Cannot retrieve locked instance %s" % self.op.instance_name
3058 _CheckNodeOnline(self, instance.primary_node)
3060 if instance.disk_template == constants.DT_DISKLESS:
3061 raise errors.OpPrereqError("Instance '%s' has no disks" %
3062 self.op.instance_name)
3063 if instance.admin_up:
3064 raise errors.OpPrereqError("Instance '%s' is marked to be up" %
3065 self.op.instance_name)
3066 remote_info = self.rpc.call_instance_info(instance.primary_node,
3068 instance.hypervisor)
3070 if remote_info.data:
3071 raise errors.OpPrereqError("Instance '%s' is running on the node %s" %
3072 (self.op.instance_name,
3073 instance.primary_node))
3075 self.op.os_type = getattr(self.op, "os_type", None)
3076 if self.op.os_type is not None:
3078 pnode = self.cfg.GetNodeInfo(
3079 self.cfg.ExpandNodeName(instance.primary_node))
3081 raise errors.OpPrereqError("Primary node '%s' is unknown" %
3083 result = self.rpc.call_os_get(pnode.name, self.op.os_type)
3085 if not isinstance(result.data, objects.OS):
3086 raise errors.OpPrereqError("OS '%s' not in supported OS list for"
3087 " primary node" % self.op.os_type)
3089 self.instance = instance
3091 def Exec(self, feedback_fn):
3092 """Reinstall the instance.
3095 inst = self.instance
3097 if self.op.os_type is not None:
3098 feedback_fn("Changing OS to '%s'..." % self.op.os_type)
3099 inst.os = self.op.os_type
3100 self.cfg.Update(inst)
3102 _StartInstanceDisks(self, inst, None)
3104 feedback_fn("Running the instance OS create scripts...")
3105 result = self.rpc.call_instance_os_add(inst.primary_node, inst, True)
3106 msg = result.RemoteFailMsg()
3108 raise errors.OpExecError("Could not install OS for instance %s"
3110 (inst.name, inst.primary_node, msg))
3112 _ShutdownInstanceDisks(self, inst)
3115 class LURenameInstance(LogicalUnit):
3116 """Rename an instance.
3119 HPATH = "instance-rename"
3120 HTYPE = constants.HTYPE_INSTANCE
3121 _OP_REQP = ["instance_name", "new_name"]
3123 def BuildHooksEnv(self):
3126 This runs on master, primary and secondary nodes of the instance.
3129 env = _BuildInstanceHookEnvByObject(self, self.instance)
3130 env["INSTANCE_NEW_NAME"] = self.op.new_name
3131 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
3134 def CheckPrereq(self):
3135 """Check prerequisites.
3137 This checks that the instance is in the cluster and is not running.
3140 instance = self.cfg.GetInstanceInfo(
3141 self.cfg.ExpandInstanceName(self.op.instance_name))
3142 if instance is None:
3143 raise errors.OpPrereqError("Instance '%s' not known" %
3144 self.op.instance_name)
3145 _CheckNodeOnline(self, instance.primary_node)
3147 if instance.admin_up:
3148 raise errors.OpPrereqError("Instance '%s' is marked to be up" %
3149 self.op.instance_name)
3150 remote_info = self.rpc.call_instance_info(instance.primary_node,
3152 instance.hypervisor)
3154 if remote_info.data:
3155 raise errors.OpPrereqError("Instance '%s' is running on the node %s" %
3156 (self.op.instance_name,
3157 instance.primary_node))
3158 self.instance = instance
3160 # new name verification
3161 name_info = utils.HostInfo(self.op.new_name)
3163 self.op.new_name = new_name = name_info.name
3164 instance_list = self.cfg.GetInstanceList()
3165 if new_name in instance_list:
3166 raise errors.OpPrereqError("Instance '%s' is already in the cluster" %
3169 if not getattr(self.op, "ignore_ip", False):
3170 if utils.TcpPing(name_info.ip, constants.DEFAULT_NODED_PORT):
3171 raise errors.OpPrereqError("IP %s of instance %s already in use" %
3172 (name_info.ip, new_name))
3175 def Exec(self, feedback_fn):
3176 """Reinstall the instance.
3179 inst = self.instance
3180 old_name = inst.name
3182 if inst.disk_template == constants.DT_FILE:
3183 old_file_storage_dir = os.path.dirname(inst.disks[0].logical_id[1])
3185 self.cfg.RenameInstance(inst.name, self.op.new_name)
3186 # Change the instance lock. This is definitely safe while we hold the BGL
3187 self.context.glm.remove(locking.LEVEL_INSTANCE, old_name)
3188 self.context.glm.add(locking.LEVEL_INSTANCE, self.op.new_name)
3190 # re-read the instance from the configuration after rename
3191 inst = self.cfg.GetInstanceInfo(self.op.new_name)
3193 if inst.disk_template == constants.DT_FILE:
3194 new_file_storage_dir = os.path.dirname(inst.disks[0].logical_id[1])
3195 result = self.rpc.call_file_storage_dir_rename(inst.primary_node,
3196 old_file_storage_dir,
3197 new_file_storage_dir)
3200 raise errors.OpExecError("Could not connect to node '%s' to rename"
3201 " directory '%s' to '%s' (but the instance"
3202 " has been renamed in Ganeti)" % (
3203 inst.primary_node, old_file_storage_dir,
3204 new_file_storage_dir))
3206 if not result.data[0]:
3207 raise errors.OpExecError("Could not rename directory '%s' to '%s'"
3208 " (but the instance has been renamed in"
3209 " Ganeti)" % (old_file_storage_dir,
3210 new_file_storage_dir))
3212 _StartInstanceDisks(self, inst, None)
3214 result = self.rpc.call_instance_run_rename(inst.primary_node, inst,
3216 msg = result.RemoteFailMsg()
3218 msg = ("Could not run OS rename script for instance %s on node %s"
3219 " (but the instance has been renamed in Ganeti): %s" %
3220 (inst.name, inst.primary_node, msg))
3221 self.proc.LogWarning(msg)
3223 _ShutdownInstanceDisks(self, inst)
3226 class LURemoveInstance(LogicalUnit):
3227 """Remove an instance.
3230 HPATH = "instance-remove"
3231 HTYPE = constants.HTYPE_INSTANCE
3232 _OP_REQP = ["instance_name", "ignore_failures"]
3235 def ExpandNames(self):
3236 self._ExpandAndLockInstance()
3237 self.needed_locks[locking.LEVEL_NODE] = []
3238 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3240 def DeclareLocks(self, level):
3241 if level == locking.LEVEL_NODE:
3242 self._LockInstancesNodes()
3244 def BuildHooksEnv(self):
3247 This runs on master, primary and secondary nodes of the instance.
3250 env = _BuildInstanceHookEnvByObject(self, self.instance)
3251 nl = [self.cfg.GetMasterNode()]
3254 def CheckPrereq(self):
3255 """Check prerequisites.
3257 This checks that the instance is in the cluster.
3260 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3261 assert self.instance is not None, \
3262 "Cannot retrieve locked instance %s" % self.op.instance_name
3264 def Exec(self, feedback_fn):
3265 """Remove the instance.
3268 instance = self.instance
3269 logging.info("Shutting down instance %s on node %s",
3270 instance.name, instance.primary_node)
3272 result = self.rpc.call_instance_shutdown(instance.primary_node, instance)
3273 msg = result.RemoteFailMsg()
3275 if self.op.ignore_failures:
3276 feedback_fn("Warning: can't shutdown instance: %s" % msg)
3278 raise errors.OpExecError("Could not shutdown instance %s on"
3280 (instance.name, instance.primary_node, msg))
3282 logging.info("Removing block devices for instance %s", instance.name)
3284 if not _RemoveDisks(self, instance):
3285 if self.op.ignore_failures:
3286 feedback_fn("Warning: can't remove instance's disks")
3288 raise errors.OpExecError("Can't remove instance's disks")
3290 logging.info("Removing instance %s out of cluster config", instance.name)
3292 self.cfg.RemoveInstance(instance.name)
3293 self.remove_locks[locking.LEVEL_INSTANCE] = instance.name
3296 class LUQueryInstances(NoHooksLU):
3297 """Logical unit for querying instances.
3300 _OP_REQP = ["output_fields", "names", "use_locking"]
3302 _FIELDS_STATIC = utils.FieldSet(*["name", "os", "pnode", "snodes",
3304 "disk_template", "ip", "mac", "bridge",
3305 "sda_size", "sdb_size", "vcpus", "tags",
3306 "network_port", "beparams",
3307 r"(disk)\.(size)/([0-9]+)",
3308 r"(disk)\.(sizes)", "disk_usage",
3309 r"(nic)\.(mac|ip|bridge)/([0-9]+)",
3310 r"(nic)\.(macs|ips|bridges)",
3311 r"(disk|nic)\.(count)",
3312 "serial_no", "hypervisor", "hvparams",] +
3314 for name in constants.HVS_PARAMETERS] +
3316 for name in constants.BES_PARAMETERS])
3317 _FIELDS_DYNAMIC = utils.FieldSet("oper_state", "oper_ram", "status")
3320 def ExpandNames(self):
3321 _CheckOutputFields(static=self._FIELDS_STATIC,
3322 dynamic=self._FIELDS_DYNAMIC,
3323 selected=self.op.output_fields)
3325 self.needed_locks = {}
3326 self.share_locks[locking.LEVEL_INSTANCE] = 1
3327 self.share_locks[locking.LEVEL_NODE] = 1
3330 self.wanted = _GetWantedInstances(self, self.op.names)
3332 self.wanted = locking.ALL_SET
3334 self.do_node_query = self._FIELDS_STATIC.NonMatching(self.op.output_fields)
3335 self.do_locking = self.do_node_query and self.op.use_locking
3337 self.needed_locks[locking.LEVEL_INSTANCE] = self.wanted
3338 self.needed_locks[locking.LEVEL_NODE] = []
3339 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3341 def DeclareLocks(self, level):
3342 if level == locking.LEVEL_NODE and self.do_locking:
3343 self._LockInstancesNodes()
3345 def CheckPrereq(self):
3346 """Check prerequisites.
3351 def Exec(self, feedback_fn):
3352 """Computes the list of nodes and their attributes.
3355 all_info = self.cfg.GetAllInstancesInfo()
3356 if self.wanted == locking.ALL_SET:
3357 # caller didn't specify instance names, so ordering is not important
3359 instance_names = self.acquired_locks[locking.LEVEL_INSTANCE]
3361 instance_names = all_info.keys()
3362 instance_names = utils.NiceSort(instance_names)
3364 # caller did specify names, so we must keep the ordering
3366 tgt_set = self.acquired_locks[locking.LEVEL_INSTANCE]
3368 tgt_set = all_info.keys()
3369 missing = set(self.wanted).difference(tgt_set)
3371 raise errors.OpExecError("Some instances were removed before"
3372 " retrieving their data: %s" % missing)
3373 instance_names = self.wanted
3375 instance_list = [all_info[iname] for iname in instance_names]
3377 # begin data gathering
3379 nodes = frozenset([inst.primary_node for inst in instance_list])
3380 hv_list = list(set([inst.hypervisor for inst in instance_list]))
3384 if self.do_node_query:
3386 node_data = self.rpc.call_all_instances_info(nodes, hv_list)
3388 result = node_data[name]
3390 # offline nodes will be in both lists
3391 off_nodes.append(name)
3393 bad_nodes.append(name)
3396 live_data.update(result.data)
3397 # else no instance is alive
3399 live_data = dict([(name, {}) for name in instance_names])
3401 # end data gathering
3406 for instance in instance_list:
3408 i_hv = self.cfg.GetClusterInfo().FillHV(instance)
3409 i_be = self.cfg.GetClusterInfo().FillBE(instance)
3410 for field in self.op.output_fields:
3411 st_match = self._FIELDS_STATIC.Matches(field)
3416 elif field == "pnode":
3417 val = instance.primary_node
3418 elif field == "snodes":
3419 val = list(instance.secondary_nodes)
3420 elif field == "admin_state":
3421 val = instance.admin_up
3422 elif field == "oper_state":
3423 if instance.primary_node in bad_nodes:
3426 val = bool(live_data.get(instance.name))
3427 elif field == "status":
3428 if instance.primary_node in off_nodes:
3429 val = "ERROR_nodeoffline"
3430 elif instance.primary_node in bad_nodes:
3431 val = "ERROR_nodedown"
3433 running = bool(live_data.get(instance.name))
3435 if instance.admin_up:
3440 if instance.admin_up:
3444 elif field == "oper_ram":
3445 if instance.primary_node in bad_nodes:
3447 elif instance.name in live_data:
3448 val = live_data[instance.name].get("memory", "?")
3451 elif field == "disk_template":
3452 val = instance.disk_template
3454 val = instance.nics[0].ip
3455 elif field == "bridge":
3456 val = instance.nics[0].bridge
3457 elif field == "mac":
3458 val = instance.nics[0].mac
3459 elif field == "sda_size" or field == "sdb_size":
3460 idx = ord(field[2]) - ord('a')
3462 val = instance.FindDisk(idx).size
3463 except errors.OpPrereqError:
3465 elif field == "disk_usage": # total disk usage per node
3466 disk_sizes = [{'size': disk.size} for disk in instance.disks]
3467 val = _ComputeDiskSize(instance.disk_template, disk_sizes)
3468 elif field == "tags":
3469 val = list(instance.GetTags())
3470 elif field == "serial_no":
3471 val = instance.serial_no
3472 elif field == "network_port":
3473 val = instance.network_port
3474 elif field == "hypervisor":
3475 val = instance.hypervisor
3476 elif field == "hvparams":
3478 elif (field.startswith(HVPREFIX) and
3479 field[len(HVPREFIX):] in constants.HVS_PARAMETERS):
3480 val = i_hv.get(field[len(HVPREFIX):], None)
3481 elif field == "beparams":
3483 elif (field.startswith(BEPREFIX) and
3484 field[len(BEPREFIX):] in constants.BES_PARAMETERS):
3485 val = i_be.get(field[len(BEPREFIX):], None)
3486 elif st_match and st_match.groups():
3487 # matches a variable list
3488 st_groups = st_match.groups()
3489 if st_groups and st_groups[0] == "disk":
3490 if st_groups[1] == "count":
3491 val = len(instance.disks)
3492 elif st_groups[1] == "sizes":
3493 val = [disk.size for disk in instance.disks]
3494 elif st_groups[1] == "size":
3496 val = instance.FindDisk(st_groups[2]).size
3497 except errors.OpPrereqError:
3500 assert False, "Unhandled disk parameter"
3501 elif st_groups[0] == "nic":
3502 if st_groups[1] == "count":
3503 val = len(instance.nics)
3504 elif st_groups[1] == "macs":
3505 val = [nic.mac for nic in instance.nics]
3506 elif st_groups[1] == "ips":
3507 val = [nic.ip for nic in instance.nics]
3508 elif st_groups[1] == "bridges":
3509 val = [nic.bridge for nic in instance.nics]
3512 nic_idx = int(st_groups[2])
3513 if nic_idx >= len(instance.nics):
3516 if st_groups[1] == "mac":
3517 val = instance.nics[nic_idx].mac
3518 elif st_groups[1] == "ip":
3519 val = instance.nics[nic_idx].ip
3520 elif st_groups[1] == "bridge":
3521 val = instance.nics[nic_idx].bridge
3523 assert False, "Unhandled NIC parameter"
3525 assert False, "Unhandled variable parameter"
3527 raise errors.ParameterError(field)
3534 class LUFailoverInstance(LogicalUnit):
3535 """Failover an instance.
3538 HPATH = "instance-failover"
3539 HTYPE = constants.HTYPE_INSTANCE
3540 _OP_REQP = ["instance_name", "ignore_consistency"]
3543 def ExpandNames(self):
3544 self._ExpandAndLockInstance()
3545 self.needed_locks[locking.LEVEL_NODE] = []
3546 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3548 def DeclareLocks(self, level):
3549 if level == locking.LEVEL_NODE:
3550 self._LockInstancesNodes()
3552 def BuildHooksEnv(self):
3555 This runs on master, primary and secondary nodes of the instance.
3559 "IGNORE_CONSISTENCY": self.op.ignore_consistency,
3561 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
3562 nl = [self.cfg.GetMasterNode()] + list(self.instance.secondary_nodes)
3565 def CheckPrereq(self):
3566 """Check prerequisites.
3568 This checks that the instance is in the cluster.
3571 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3572 assert self.instance is not None, \
3573 "Cannot retrieve locked instance %s" % self.op.instance_name
3575 bep = self.cfg.GetClusterInfo().FillBE(instance)
3576 if instance.disk_template not in constants.DTS_NET_MIRROR:
3577 raise errors.OpPrereqError("Instance's disk layout is not"
3578 " network mirrored, cannot failover.")
3580 secondary_nodes = instance.secondary_nodes
3581 if not secondary_nodes:
3582 raise errors.ProgrammerError("no secondary node but using "
3583 "a mirrored disk template")
3585 target_node = secondary_nodes[0]
3586 _CheckNodeOnline(self, target_node)
3587 _CheckNodeNotDrained(self, target_node)
3588 # check memory requirements on the secondary node
3589 _CheckNodeFreeMemory(self, target_node, "failing over instance %s" %
3590 instance.name, bep[constants.BE_MEMORY],
3591 instance.hypervisor)
3593 # check bridge existance
3594 brlist = [nic.bridge for nic in instance.nics]
3595 result = self.rpc.call_bridges_exist(target_node, brlist)
3598 raise errors.OpPrereqError("One or more target bridges %s does not"
3599 " exist on destination node '%s'" %
3600 (brlist, target_node))
3602 def Exec(self, feedback_fn):
3603 """Failover an instance.
3605 The failover is done by shutting it down on its present node and
3606 starting it on the secondary.
3609 instance = self.instance
3611 source_node = instance.primary_node
3612 target_node = instance.secondary_nodes[0]
3614 feedback_fn("* checking disk consistency between source and target")
3615 for dev in instance.disks:
3616 # for drbd, these are drbd over lvm
3617 if not _CheckDiskConsistency(self, dev, target_node, False):
3618 if instance.admin_up and not self.op.ignore_consistency:
3619 raise errors.OpExecError("Disk %s is degraded on target node,"
3620 " aborting failover." % dev.iv_name)
3622 feedback_fn("* shutting down instance on source node")
3623 logging.info("Shutting down instance %s on node %s",
3624 instance.name, source_node)
3626 result = self.rpc.call_instance_shutdown(source_node, instance)
3627 msg = result.RemoteFailMsg()
3629 if self.op.ignore_consistency:
3630 self.proc.LogWarning("Could not shutdown instance %s on node %s."
3631 " Proceeding anyway. Please make sure node"
3632 " %s is down. Error details: %s",
3633 instance.name, source_node, source_node, msg)
3635 raise errors.OpExecError("Could not shutdown instance %s on"
3637 (instance.name, source_node, msg))
3639 feedback_fn("* deactivating the instance's disks on source node")
3640 if not _ShutdownInstanceDisks(self, instance, ignore_primary=True):
3641 raise errors.OpExecError("Can't shut down the instance's disks.")
3643 instance.primary_node = target_node
3644 # distribute new instance config to the other nodes
3645 self.cfg.Update(instance)
3647 # Only start the instance if it's marked as up
3648 if instance.admin_up:
3649 feedback_fn("* activating the instance's disks on target node")
3650 logging.info("Starting instance %s on node %s",
3651 instance.name, target_node)
3653 disks_ok, dummy = _AssembleInstanceDisks(self, instance,
3654 ignore_secondaries=True)
3656 _ShutdownInstanceDisks(self, instance)
3657 raise errors.OpExecError("Can't activate the instance's disks")
3659 feedback_fn("* starting the instance on the target node")
3660 result = self.rpc.call_instance_start(target_node, instance, None, None)
3661 msg = result.RemoteFailMsg()
3663 _ShutdownInstanceDisks(self, instance)
3664 raise errors.OpExecError("Could not start instance %s on node %s: %s" %
3665 (instance.name, target_node, msg))
3668 class LUMigrateInstance(LogicalUnit):
3669 """Migrate an instance.
3671 This is migration without shutting down, compared to the failover,
3672 which is done with shutdown.
3675 HPATH = "instance-migrate"
3676 HTYPE = constants.HTYPE_INSTANCE
3677 _OP_REQP = ["instance_name", "live", "cleanup"]
3681 def ExpandNames(self):
3682 self._ExpandAndLockInstance()
3683 self.needed_locks[locking.LEVEL_NODE] = []
3684 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3686 def DeclareLocks(self, level):
3687 if level == locking.LEVEL_NODE:
3688 self._LockInstancesNodes()
3690 def BuildHooksEnv(self):
3693 This runs on master, primary and secondary nodes of the instance.
3696 env = _BuildInstanceHookEnvByObject(self, self.instance)
3697 env["MIGRATE_LIVE"] = self.op.live
3698 env["MIGRATE_CLEANUP"] = self.op.cleanup
3699 nl = [self.cfg.GetMasterNode()] + list(self.instance.secondary_nodes)
3702 def CheckPrereq(self):
3703 """Check prerequisites.
3705 This checks that the instance is in the cluster.
3708 instance = self.cfg.GetInstanceInfo(
3709 self.cfg.ExpandInstanceName(self.op.instance_name))
3710 if instance is None:
3711 raise errors.OpPrereqError("Instance '%s' not known" %
3712 self.op.instance_name)
3714 if instance.disk_template != constants.DT_DRBD8:
3715 raise errors.OpPrereqError("Instance's disk layout is not"
3716 " drbd8, cannot migrate.")
3718 secondary_nodes = instance.secondary_nodes
3719 if not secondary_nodes:
3720 raise errors.ConfigurationError("No secondary node but using"
3721 " drbd8 disk template")
3723 i_be = self.cfg.GetClusterInfo().FillBE(instance)
3725 target_node = secondary_nodes[0]
3726 # check memory requirements on the secondary node
3727 _CheckNodeFreeMemory(self, target_node, "migrating instance %s" %
3728 instance.name, i_be[constants.BE_MEMORY],
3729 instance.hypervisor)
3731 # check bridge existance
3732 brlist = [nic.bridge for nic in instance.nics]
3733 result = self.rpc.call_bridges_exist(target_node, brlist)
3734 if result.failed or not result.data:
3735 raise errors.OpPrereqError("One or more target bridges %s does not"
3736 " exist on destination node '%s'" %
3737 (brlist, target_node))
3739 if not self.op.cleanup:
3740 _CheckNodeNotDrained(self, target_node)
3741 result = self.rpc.call_instance_migratable(instance.primary_node,
3743 msg = result.RemoteFailMsg()
3745 raise errors.OpPrereqError("Can't migrate: %s - please use failover" %
3748 self.instance = instance
3750 def _WaitUntilSync(self):
3751 """Poll with custom rpc for disk sync.
3753 This uses our own step-based rpc call.
3756 self.feedback_fn("* wait until resync is done")
3760 result = self.rpc.call_drbd_wait_sync(self.all_nodes,
3762 self.instance.disks)
3764 for node, nres in result.items():
3765 msg = nres.RemoteFailMsg()
3767 raise errors.OpExecError("Cannot resync disks on node %s: %s" %
3769 node_done, node_percent = nres.payload
3770 all_done = all_done and node_done
3771 if node_percent is not None:
3772 min_percent = min(min_percent, node_percent)
3774 if min_percent < 100:
3775 self.feedback_fn(" - progress: %.1f%%" % min_percent)
3778 def _EnsureSecondary(self, node):
3779 """Demote a node to secondary.
3782 self.feedback_fn("* switching node %s to secondary mode" % node)
3784 for dev in self.instance.disks:
3785 self.cfg.SetDiskID(dev, node)
3787 result = self.rpc.call_blockdev_close(node, self.instance.name,
3788 self.instance.disks)
3789 msg = result.RemoteFailMsg()
3791 raise errors.OpExecError("Cannot change disk to secondary on node %s,"
3792 " error %s" % (node, msg))
3794 def _GoStandalone(self):
3795 """Disconnect from the network.
3798 self.feedback_fn("* changing into standalone mode")
3799 result = self.rpc.call_drbd_disconnect_net(self.all_nodes, self.nodes_ip,
3800 self.instance.disks)
3801 for node, nres in result.items():
3802 msg = nres.RemoteFailMsg()
3804 raise errors.OpExecError("Cannot disconnect disks node %s,"
3805 " error %s" % (node, msg))
3807 def _GoReconnect(self, multimaster):
3808 """Reconnect to the network.
3814 msg = "single-master"
3815 self.feedback_fn("* changing disks into %s mode" % msg)
3816 result = self.rpc.call_drbd_attach_net(self.all_nodes, self.nodes_ip,
3817 self.instance.disks,
3818 self.instance.name, multimaster)
3819 for node, nres in result.items():
3820 msg = nres.RemoteFailMsg()
3822 raise errors.OpExecError("Cannot change disks config on node %s,"
3823 " error: %s" % (node, msg))
3825 def _ExecCleanup(self):
3826 """Try to cleanup after a failed migration.
3828 The cleanup is done by:
3829 - check that the instance is running only on one node
3830 (and update the config if needed)
3831 - change disks on its secondary node to secondary
3832 - wait until disks are fully synchronized
3833 - disconnect from the network
3834 - change disks into single-master mode
3835 - wait again until disks are fully synchronized
3838 instance = self.instance
3839 target_node = self.target_node
3840 source_node = self.source_node
3842 # check running on only one node
3843 self.feedback_fn("* checking where the instance actually runs"
3844 " (if this hangs, the hypervisor might be in"
3846 ins_l = self.rpc.call_instance_list(self.all_nodes, [instance.hypervisor])
3847 for node, result in ins_l.items():
3849 if not isinstance(result.data, list):
3850 raise errors.OpExecError("Can't contact node '%s'" % node)
3852 runningon_source = instance.name in ins_l[source_node].data
3853 runningon_target = instance.name in ins_l[target_node].data
3855 if runningon_source and runningon_target:
3856 raise errors.OpExecError("Instance seems to be running on two nodes,"
3857 " or the hypervisor is confused. You will have"
3858 " to ensure manually that it runs only on one"
3859 " and restart this operation.")
3861 if not (runningon_source or runningon_target):
3862 raise errors.OpExecError("Instance does not seem to be running at all."
3863 " In this case, it's safer to repair by"
3864 " running 'gnt-instance stop' to ensure disk"
3865 " shutdown, and then restarting it.")
3867 if runningon_target:
3868 # the migration has actually succeeded, we need to update the config
3869 self.feedback_fn("* instance running on secondary node (%s),"
3870 " updating config" % target_node)
3871 instance.primary_node = target_node
3872 self.cfg.Update(instance)
3873 demoted_node = source_node
3875 self.feedback_fn("* instance confirmed to be running on its"
3876 " primary node (%s)" % source_node)
3877 demoted_node = target_node
3879 self._EnsureSecondary(demoted_node)
3881 self._WaitUntilSync()
3882 except errors.OpExecError:
3883 # we ignore here errors, since if the device is standalone, it
3884 # won't be able to sync
3886 self._GoStandalone()
3887 self._GoReconnect(False)
3888 self._WaitUntilSync()
3890 self.feedback_fn("* done")
3892 def _RevertDiskStatus(self):
3893 """Try to revert the disk status after a failed migration.
3896 target_node = self.target_node
3898 self._EnsureSecondary(target_node)
3899 self._GoStandalone()
3900 self._GoReconnect(False)
3901 self._WaitUntilSync()
3902 except errors.OpExecError, err:
3903 self.LogWarning("Migration failed and I can't reconnect the"
3904 " drives: error '%s'\n"
3905 "Please look and recover the instance status" %
3908 def _AbortMigration(self):
3909 """Call the hypervisor code to abort a started migration.
3912 instance = self.instance
3913 target_node = self.target_node
3914 migration_info = self.migration_info
3916 abort_result = self.rpc.call_finalize_migration(target_node,
3920 abort_msg = abort_result.RemoteFailMsg()
3922 logging.error("Aborting migration failed on target node %s: %s" %
3923 (target_node, abort_msg))
3924 # Don't raise an exception here, as we stil have to try to revert the
3925 # disk status, even if this step failed.
3927 def _ExecMigration(self):
3928 """Migrate an instance.
3930 The migrate is done by:
3931 - change the disks into dual-master mode
3932 - wait until disks are fully synchronized again
3933 - migrate the instance
3934 - change disks on the new secondary node (the old primary) to secondary
3935 - wait until disks are fully synchronized
3936 - change disks into single-master mode
3939 instance = self.instance
3940 target_node = self.target_node
3941 source_node = self.source_node
3943 self.feedback_fn("* checking disk consistency between source and target")
3944 for dev in instance.disks:
3945 if not _CheckDiskConsistency(self, dev, target_node, False):
3946 raise errors.OpExecError("Disk %s is degraded or not fully"
3947 " synchronized on target node,"
3948 " aborting migrate." % dev.iv_name)
3950 # First get the migration information from the remote node
3951 result = self.rpc.call_migration_info(source_node, instance)
3952 msg = result.RemoteFailMsg()
3954 log_err = ("Failed fetching source migration information from %s: %s" %
3956 logging.error(log_err)
3957 raise errors.OpExecError(log_err)
3959 self.migration_info = migration_info = result.payload
3961 # Then switch the disks to master/master mode
3962 self._EnsureSecondary(target_node)
3963 self._GoStandalone()
3964 self._GoReconnect(True)
3965 self._WaitUntilSync()
3967 self.feedback_fn("* preparing %s to accept the instance" % target_node)
3968 result = self.rpc.call_accept_instance(target_node,
3971 self.nodes_ip[target_node])
3973 msg = result.RemoteFailMsg()
3975 logging.error("Instance pre-migration failed, trying to revert"
3976 " disk status: %s", msg)
3977 self._AbortMigration()
3978 self._RevertDiskStatus()
3979 raise errors.OpExecError("Could not pre-migrate instance %s: %s" %
3980 (instance.name, msg))
3982 self.feedback_fn("* migrating instance to %s" % target_node)
3984 result = self.rpc.call_instance_migrate(source_node, instance,
3985 self.nodes_ip[target_node],
3987 msg = result.RemoteFailMsg()
3989 logging.error("Instance migration failed, trying to revert"
3990 " disk status: %s", msg)
3991 self._AbortMigration()
3992 self._RevertDiskStatus()
3993 raise errors.OpExecError("Could not migrate instance %s: %s" %
3994 (instance.name, msg))
3997 instance.primary_node = target_node
3998 # distribute new instance config to the other nodes
3999 self.cfg.Update(instance)
4001 result = self.rpc.call_finalize_migration(target_node,
4005 msg = result.RemoteFailMsg()
4007 logging.error("Instance migration succeeded, but finalization failed:"
4009 raise errors.OpExecError("Could not finalize instance migration: %s" %
4012 self._EnsureSecondary(source_node)
4013 self._WaitUntilSync()
4014 self._GoStandalone()
4015 self._GoReconnect(False)
4016 self._WaitUntilSync()
4018 self.feedback_fn("* done")
4020 def Exec(self, feedback_fn):
4021 """Perform the migration.
4024 self.feedback_fn = feedback_fn
4026 self.source_node = self.instance.primary_node
4027 self.target_node = self.instance.secondary_nodes[0]
4028 self.all_nodes = [self.source_node, self.target_node]
4030 self.source_node: self.cfg.GetNodeInfo(self.source_node).secondary_ip,
4031 self.target_node: self.cfg.GetNodeInfo(self.target_node).secondary_ip,
4034 return self._ExecCleanup()
4036 return self._ExecMigration()
4039 def _CreateBlockDev(lu, node, instance, device, force_create,
4041 """Create a tree of block devices on a given node.
4043 If this device type has to be created on secondaries, create it and
4046 If not, just recurse to children keeping the same 'force' value.
4048 @param lu: the lu on whose behalf we execute
4049 @param node: the node on which to create the device
4050 @type instance: L{objects.Instance}
4051 @param instance: the instance which owns the device
4052 @type device: L{objects.Disk}
4053 @param device: the device to create
4054 @type force_create: boolean
4055 @param force_create: whether to force creation of this device; this
4056 will be change to True whenever we find a device which has
4057 CreateOnSecondary() attribute
4058 @param info: the extra 'metadata' we should attach to the device
4059 (this will be represented as a LVM tag)
4060 @type force_open: boolean
4061 @param force_open: this parameter will be passes to the
4062 L{backend.BlockdevCreate} function where it specifies
4063 whether we run on primary or not, and it affects both
4064 the child assembly and the device own Open() execution
4067 if device.CreateOnSecondary():
4071 for child in device.children:
4072 _CreateBlockDev(lu, node, instance, child, force_create,
4075 if not force_create:
4078 _CreateSingleBlockDev(lu, node, instance, device, info, force_open)
4081 def _CreateSingleBlockDev(lu, node, instance, device, info, force_open):
4082 """Create a single block device on a given node.
4084 This will not recurse over children of the device, so they must be
4087 @param lu: the lu on whose behalf we execute
4088 @param node: the node on which to create the device
4089 @type instance: L{objects.Instance}
4090 @param instance: the instance which owns the device
4091 @type device: L{objects.Disk}
4092 @param device: the device to create
4093 @param info: the extra 'metadata' we should attach to the device
4094 (this will be represented as a LVM tag)
4095 @type force_open: boolean
4096 @param force_open: this parameter will be passes to the
4097 L{backend.BlockdevCreate} function where it specifies
4098 whether we run on primary or not, and it affects both
4099 the child assembly and the device own Open() execution
4102 lu.cfg.SetDiskID(device, node)
4103 result = lu.rpc.call_blockdev_create(node, device, device.size,
4104 instance.name, force_open, info)
4105 msg = result.RemoteFailMsg()
4107 raise errors.OpExecError("Can't create block device %s on"
4108 " node %s for instance %s: %s" %
4109 (device, node, instance.name, msg))
4110 if device.physical_id is None:
4111 device.physical_id = result.payload
4114 def _GenerateUniqueNames(lu, exts):
4115 """Generate a suitable LV name.
4117 This will generate a logical volume name for the given instance.
4122 new_id = lu.cfg.GenerateUniqueID()
4123 results.append("%s%s" % (new_id, val))
4127 def _GenerateDRBD8Branch(lu, primary, secondary, size, names, iv_name,
4129 """Generate a drbd8 device complete with its children.
4132 port = lu.cfg.AllocatePort()
4133 vgname = lu.cfg.GetVGName()
4134 shared_secret = lu.cfg.GenerateDRBDSecret()
4135 dev_data = objects.Disk(dev_type=constants.LD_LV, size=size,
4136 logical_id=(vgname, names[0]))
4137 dev_meta = objects.Disk(dev_type=constants.LD_LV, size=128,
4138 logical_id=(vgname, names[1]))
4139 drbd_dev = objects.Disk(dev_type=constants.LD_DRBD8, size=size,
4140 logical_id=(primary, secondary, port,
4143 children=[dev_data, dev_meta],
4148 def _GenerateDiskTemplate(lu, template_name,
4149 instance_name, primary_node,
4150 secondary_nodes, disk_info,
4151 file_storage_dir, file_driver,
4153 """Generate the entire disk layout for a given template type.
4156 #TODO: compute space requirements
4158 vgname = lu.cfg.GetVGName()
4159 disk_count = len(disk_info)
4161 if template_name == constants.DT_DISKLESS:
4163 elif template_name == constants.DT_PLAIN:
4164 if len(secondary_nodes) != 0:
4165 raise errors.ProgrammerError("Wrong template configuration")
4167 names = _GenerateUniqueNames(lu, [".disk%d" % i
4168 for i in range(disk_count)])
4169 for idx, disk in enumerate(disk_info):
4170 disk_index = idx + base_index
4171 disk_dev = objects.Disk(dev_type=constants.LD_LV, size=disk["size"],
4172 logical_id=(vgname, names[idx]),
4173 iv_name="disk/%d" % disk_index,
4175 disks.append(disk_dev)
4176 elif template_name == constants.DT_DRBD8:
4177 if len(secondary_nodes) != 1:
4178 raise errors.ProgrammerError("Wrong template configuration")
4179 remote_node = secondary_nodes[0]
4180 minors = lu.cfg.AllocateDRBDMinor(
4181 [primary_node, remote_node] * len(disk_info), instance_name)
4184 for lv_prefix in _GenerateUniqueNames(lu, [".disk%d" % i
4185 for i in range(disk_count)]):
4186 names.append(lv_prefix + "_data")
4187 names.append(lv_prefix + "_meta")
4188 for idx, disk in enumerate(disk_info):
4189 disk_index = idx + base_index
4190 disk_dev = _GenerateDRBD8Branch(lu, primary_node, remote_node,
4191 disk["size"], names[idx*2:idx*2+2],
4192 "disk/%d" % disk_index,
4193 minors[idx*2], minors[idx*2+1])
4194 disk_dev.mode = disk["mode"]
4195 disks.append(disk_dev)
4196 elif template_name == constants.DT_FILE:
4197 if len(secondary_nodes) != 0:
4198 raise errors.ProgrammerError("Wrong template configuration")
4200 for idx, disk in enumerate(disk_info):
4201 disk_index = idx + base_index
4202 disk_dev = objects.Disk(dev_type=constants.LD_FILE, size=disk["size"],
4203 iv_name="disk/%d" % disk_index,
4204 logical_id=(file_driver,
4205 "%s/disk%d" % (file_storage_dir,
4208 disks.append(disk_dev)
4210 raise errors.ProgrammerError("Invalid disk template '%s'" % template_name)
4214 def _GetInstanceInfoText(instance):
4215 """Compute that text that should be added to the disk's metadata.
4218 return "originstname+%s" % instance.name
4221 def _CreateDisks(lu, instance):
4222 """Create all disks for an instance.
4224 This abstracts away some work from AddInstance.
4226 @type lu: L{LogicalUnit}
4227 @param lu: the logical unit on whose behalf we execute
4228 @type instance: L{objects.Instance}
4229 @param instance: the instance whose disks we should create
4231 @return: the success of the creation
4234 info = _GetInstanceInfoText(instance)
4235 pnode = instance.primary_node
4237 if instance.disk_template == constants.DT_FILE:
4238 file_storage_dir = os.path.dirname(instance.disks[0].logical_id[1])
4239 result = lu.rpc.call_file_storage_dir_create(pnode, file_storage_dir)
4241 if result.failed or not result.data:
4242 raise errors.OpExecError("Could not connect to node '%s'" % pnode)
4244 if not result.data[0]:
4245 raise errors.OpExecError("Failed to create directory '%s'" %
4248 # Note: this needs to be kept in sync with adding of disks in
4249 # LUSetInstanceParams
4250 for device in instance.disks:
4251 logging.info("Creating volume %s for instance %s",
4252 device.iv_name, instance.name)
4254 for node in instance.all_nodes:
4255 f_create = node == pnode
4256 _CreateBlockDev(lu, node, instance, device, f_create, info, f_create)
4259 def _RemoveDisks(lu, instance):
4260 """Remove all disks for an instance.
4262 This abstracts away some work from `AddInstance()` and
4263 `RemoveInstance()`. Note that in case some of the devices couldn't
4264 be removed, the removal will continue with the other ones (compare
4265 with `_CreateDisks()`).
4267 @type lu: L{LogicalUnit}
4268 @param lu: the logical unit on whose behalf we execute
4269 @type instance: L{objects.Instance}
4270 @param instance: the instance whose disks we should remove
4272 @return: the success of the removal
4275 logging.info("Removing block devices for instance %s", instance.name)
4278 for device in instance.disks:
4279 for node, disk in device.ComputeNodeTree(instance.primary_node):
4280 lu.cfg.SetDiskID(disk, node)
4281 msg = lu.rpc.call_blockdev_remove(node, disk).RemoteFailMsg()
4283 lu.LogWarning("Could not remove block device %s on node %s,"
4284 " continuing anyway: %s", device.iv_name, node, msg)
4287 if instance.disk_template == constants.DT_FILE:
4288 file_storage_dir = os.path.dirname(instance.disks[0].logical_id[1])
4289 result = lu.rpc.call_file_storage_dir_remove(instance.primary_node,
4291 if result.failed or not result.data:
4292 logging.error("Could not remove directory '%s'", file_storage_dir)
4298 def _ComputeDiskSize(disk_template, disks):
4299 """Compute disk size requirements in the volume group
4302 # Required free disk space as a function of disk and swap space
4304 constants.DT_DISKLESS: None,
4305 constants.DT_PLAIN: sum(d["size"] for d in disks),
4306 # 128 MB are added for drbd metadata for each disk
4307 constants.DT_DRBD8: sum(d["size"] + 128 for d in disks),
4308 constants.DT_FILE: None,
4311 if disk_template not in req_size_dict:
4312 raise errors.ProgrammerError("Disk template '%s' size requirement"
4313 " is unknown" % disk_template)
4315 return req_size_dict[disk_template]
4318 def _CheckHVParams(lu, nodenames, hvname, hvparams):
4319 """Hypervisor parameter validation.
4321 This function abstract the hypervisor parameter validation to be
4322 used in both instance create and instance modify.
4324 @type lu: L{LogicalUnit}
4325 @param lu: the logical unit for which we check
4326 @type nodenames: list
4327 @param nodenames: the list of nodes on which we should check
4328 @type hvname: string
4329 @param hvname: the name of the hypervisor we should use
4330 @type hvparams: dict
4331 @param hvparams: the parameters which we need to check
4332 @raise errors.OpPrereqError: if the parameters are not valid
4335 hvinfo = lu.rpc.call_hypervisor_validate_params(nodenames,
4338 for node in nodenames:
4342 msg = info.RemoteFailMsg()
4344 raise errors.OpPrereqError("Hypervisor parameter validation"
4345 " failed on node %s: %s" % (node, msg))
4348 class LUCreateInstance(LogicalUnit):
4349 """Create an instance.
4352 HPATH = "instance-add"
4353 HTYPE = constants.HTYPE_INSTANCE
4354 _OP_REQP = ["instance_name", "disks", "disk_template",
4356 "wait_for_sync", "ip_check", "nics",
4357 "hvparams", "beparams"]
4360 def _ExpandNode(self, node):
4361 """Expands and checks one node name.
4364 node_full = self.cfg.ExpandNodeName(node)
4365 if node_full is None:
4366 raise errors.OpPrereqError("Unknown node %s" % node)
4369 def ExpandNames(self):
4370 """ExpandNames for CreateInstance.
4372 Figure out the right locks for instance creation.
4375 self.needed_locks = {}
4377 # set optional parameters to none if they don't exist
4378 for attr in ["pnode", "snode", "iallocator", "hypervisor"]:
4379 if not hasattr(self.op, attr):
4380 setattr(self.op, attr, None)
4382 # cheap checks, mostly valid constants given
4384 # verify creation mode
4385 if self.op.mode not in (constants.INSTANCE_CREATE,
4386 constants.INSTANCE_IMPORT):
4387 raise errors.OpPrereqError("Invalid instance creation mode '%s'" %
4390 # disk template and mirror node verification
4391 if self.op.disk_template not in constants.DISK_TEMPLATES:
4392 raise errors.OpPrereqError("Invalid disk template name")
4394 if self.op.hypervisor is None:
4395 self.op.hypervisor = self.cfg.GetHypervisorType()
4397 cluster = self.cfg.GetClusterInfo()
4398 enabled_hvs = cluster.enabled_hypervisors
4399 if self.op.hypervisor not in enabled_hvs:
4400 raise errors.OpPrereqError("Selected hypervisor (%s) not enabled in the"
4401 " cluster (%s)" % (self.op.hypervisor,
4402 ",".join(enabled_hvs)))
4404 # check hypervisor parameter syntax (locally)
4405 utils.ForceDictType(self.op.hvparams, constants.HVS_PARAMETER_TYPES)
4406 filled_hvp = cluster.FillDict(cluster.hvparams[self.op.hypervisor],
4408 hv_type = hypervisor.GetHypervisor(self.op.hypervisor)
4409 hv_type.CheckParameterSyntax(filled_hvp)
4411 # fill and remember the beparams dict
4412 utils.ForceDictType(self.op.beparams, constants.BES_PARAMETER_TYPES)
4413 self.be_full = cluster.FillDict(cluster.beparams[constants.BEGR_DEFAULT],
4416 #### instance parameters check
4418 # instance name verification
4419 hostname1 = utils.HostInfo(self.op.instance_name)
4420 self.op.instance_name = instance_name = hostname1.name
4422 # this is just a preventive check, but someone might still add this
4423 # instance in the meantime, and creation will fail at lock-add time
4424 if instance_name in self.cfg.GetInstanceList():
4425 raise errors.OpPrereqError("Instance '%s' is already in the cluster" %
4428 self.add_locks[locking.LEVEL_INSTANCE] = instance_name
4432 for nic in self.op.nics:
4433 # ip validity checks
4434 ip = nic.get("ip", None)
4435 if ip is None or ip.lower() == "none":
4437 elif ip.lower() == constants.VALUE_AUTO:
4438 nic_ip = hostname1.ip
4440 if not utils.IsValidIP(ip):
4441 raise errors.OpPrereqError("Given IP address '%s' doesn't look"
4442 " like a valid IP" % ip)
4445 # MAC address verification
4446 mac = nic.get("mac", constants.VALUE_AUTO)
4447 if mac not in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
4448 if not utils.IsValidMac(mac.lower()):
4449 raise errors.OpPrereqError("Invalid MAC address specified: %s" %
4451 # bridge verification
4452 bridge = nic.get("bridge", None)
4454 bridge = self.cfg.GetDefBridge()
4455 self.nics.append(objects.NIC(mac=mac, ip=nic_ip, bridge=bridge))
4457 # disk checks/pre-build
4459 for disk in self.op.disks:
4460 mode = disk.get("mode", constants.DISK_RDWR)
4461 if mode not in constants.DISK_ACCESS_SET:
4462 raise errors.OpPrereqError("Invalid disk access mode '%s'" %
4464 size = disk.get("size", None)
4466 raise errors.OpPrereqError("Missing disk size")
4470 raise errors.OpPrereqError("Invalid disk size '%s'" % size)
4471 self.disks.append({"size": size, "mode": mode})
4473 # used in CheckPrereq for ip ping check
4474 self.check_ip = hostname1.ip
4476 # file storage checks
4477 if (self.op.file_driver and
4478 not self.op.file_driver in constants.FILE_DRIVER):
4479 raise errors.OpPrereqError("Invalid file driver name '%s'" %
4480 self.op.file_driver)
4482 if self.op.file_storage_dir and os.path.isabs(self.op.file_storage_dir):
4483 raise errors.OpPrereqError("File storage directory path not absolute")
4485 ### Node/iallocator related checks
4486 if [self.op.iallocator, self.op.pnode].count(None) != 1:
4487 raise errors.OpPrereqError("One and only one of iallocator and primary"
4488 " node must be given")
4490 if self.op.iallocator:
4491 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
4493 self.op.pnode = self._ExpandNode(self.op.pnode)
4494 nodelist = [self.op.pnode]
4495 if self.op.snode is not None:
4496 self.op.snode = self._ExpandNode(self.op.snode)
4497 nodelist.append(self.op.snode)
4498 self.needed_locks[locking.LEVEL_NODE] = nodelist
4500 # in case of import lock the source node too
4501 if self.op.mode == constants.INSTANCE_IMPORT:
4502 src_node = getattr(self.op, "src_node", None)
4503 src_path = getattr(self.op, "src_path", None)
4505 if src_path is None:
4506 self.op.src_path = src_path = self.op.instance_name
4508 if src_node is None:
4509 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
4510 self.op.src_node = None
4511 if os.path.isabs(src_path):
4512 raise errors.OpPrereqError("Importing an instance from an absolute"
4513 " path requires a source node option.")
4515 self.op.src_node = src_node = self._ExpandNode(src_node)
4516 if self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET:
4517 self.needed_locks[locking.LEVEL_NODE].append(src_node)
4518 if not os.path.isabs(src_path):
4519 self.op.src_path = src_path = \
4520 os.path.join(constants.EXPORT_DIR, src_path)
4522 else: # INSTANCE_CREATE
4523 if getattr(self.op, "os_type", None) is None:
4524 raise errors.OpPrereqError("No guest OS specified")
4526 def _RunAllocator(self):
4527 """Run the allocator based on input opcode.
4530 nics = [n.ToDict() for n in self.nics]
4531 ial = IAllocator(self,
4532 mode=constants.IALLOCATOR_MODE_ALLOC,
4533 name=self.op.instance_name,
4534 disk_template=self.op.disk_template,
4537 vcpus=self.be_full[constants.BE_VCPUS],
4538 mem_size=self.be_full[constants.BE_MEMORY],
4541 hypervisor=self.op.hypervisor,
4544 ial.Run(self.op.iallocator)
4547 raise errors.OpPrereqError("Can't compute nodes using"
4548 " iallocator '%s': %s" % (self.op.iallocator,
4550 if len(ial.nodes) != ial.required_nodes:
4551 raise errors.OpPrereqError("iallocator '%s' returned invalid number"
4552 " of nodes (%s), required %s" %
4553 (self.op.iallocator, len(ial.nodes),
4554 ial.required_nodes))
4555 self.op.pnode = ial.nodes[0]
4556 self.LogInfo("Selected nodes for instance %s via iallocator %s: %s",
4557 self.op.instance_name, self.op.iallocator,
4558 ", ".join(ial.nodes))
4559 if ial.required_nodes == 2:
4560 self.op.snode = ial.nodes[1]
4562 def BuildHooksEnv(self):
4565 This runs on master, primary and secondary nodes of the instance.
4569 "ADD_MODE": self.op.mode,
4571 if self.op.mode == constants.INSTANCE_IMPORT:
4572 env["SRC_NODE"] = self.op.src_node
4573 env["SRC_PATH"] = self.op.src_path
4574 env["SRC_IMAGES"] = self.src_images
4576 env.update(_BuildInstanceHookEnv(
4577 name=self.op.instance_name,
4578 primary_node=self.op.pnode,
4579 secondary_nodes=self.secondaries,
4580 status=self.op.start,
4581 os_type=self.op.os_type,
4582 memory=self.be_full[constants.BE_MEMORY],
4583 vcpus=self.be_full[constants.BE_VCPUS],
4584 nics=[(n.ip, n.bridge, n.mac) for n in self.nics],
4585 disk_template=self.op.disk_template,
4586 disks=[(d["size"], d["mode"]) for d in self.disks],
4589 nl = ([self.cfg.GetMasterNode(), self.op.pnode] +
4594 def CheckPrereq(self):
4595 """Check prerequisites.
4598 if (not self.cfg.GetVGName() and
4599 self.op.disk_template not in constants.DTS_NOT_LVM):
4600 raise errors.OpPrereqError("Cluster does not support lvm-based"
4603 if self.op.mode == constants.INSTANCE_IMPORT:
4604 src_node = self.op.src_node
4605 src_path = self.op.src_path
4607 if src_node is None:
4608 exp_list = self.rpc.call_export_list(
4609 self.acquired_locks[locking.LEVEL_NODE])
4611 for node in exp_list:
4612 if not exp_list[node].failed and src_path in exp_list[node].data:
4614 self.op.src_node = src_node = node
4615 self.op.src_path = src_path = os.path.join(constants.EXPORT_DIR,
4619 raise errors.OpPrereqError("No export found for relative path %s" %
4622 _CheckNodeOnline(self, src_node)
4623 result = self.rpc.call_export_info(src_node, src_path)
4626 raise errors.OpPrereqError("No export found in dir %s" % src_path)
4628 export_info = result.data
4629 if not export_info.has_section(constants.INISECT_EXP):
4630 raise errors.ProgrammerError("Corrupted export config")
4632 ei_version = export_info.get(constants.INISECT_EXP, 'version')
4633 if (int(ei_version) != constants.EXPORT_VERSION):
4634 raise errors.OpPrereqError("Wrong export version %s (wanted %d)" %
4635 (ei_version, constants.EXPORT_VERSION))
4637 # Check that the new instance doesn't have less disks than the export
4638 instance_disks = len(self.disks)
4639 export_disks = export_info.getint(constants.INISECT_INS, 'disk_count')
4640 if instance_disks < export_disks:
4641 raise errors.OpPrereqError("Not enough disks to import."
4642 " (instance: %d, export: %d)" %
4643 (instance_disks, export_disks))
4645 self.op.os_type = export_info.get(constants.INISECT_EXP, 'os')
4647 for idx in range(export_disks):
4648 option = 'disk%d_dump' % idx
4649 if export_info.has_option(constants.INISECT_INS, option):
4650 # FIXME: are the old os-es, disk sizes, etc. useful?
4651 export_name = export_info.get(constants.INISECT_INS, option)
4652 image = os.path.join(src_path, export_name)
4653 disk_images.append(image)
4655 disk_images.append(False)
4657 self.src_images = disk_images
4659 old_name = export_info.get(constants.INISECT_INS, 'name')
4660 # FIXME: int() here could throw a ValueError on broken exports
4661 exp_nic_count = int(export_info.get(constants.INISECT_INS, 'nic_count'))
4662 if self.op.instance_name == old_name:
4663 for idx, nic in enumerate(self.nics):
4664 if nic.mac == constants.VALUE_AUTO and exp_nic_count >= idx:
4665 nic_mac_ini = 'nic%d_mac' % idx
4666 nic.mac = export_info.get(constants.INISECT_INS, nic_mac_ini)
4668 # ENDIF: self.op.mode == constants.INSTANCE_IMPORT
4669 # ip ping checks (we use the same ip that was resolved in ExpandNames)
4670 if self.op.start and not self.op.ip_check:
4671 raise errors.OpPrereqError("Cannot ignore IP address conflicts when"
4672 " adding an instance in start mode")
4674 if self.op.ip_check:
4675 if utils.TcpPing(self.check_ip, constants.DEFAULT_NODED_PORT):
4676 raise errors.OpPrereqError("IP %s of instance %s already in use" %
4677 (self.check_ip, self.op.instance_name))
4679 #### mac address generation
4680 # By generating here the mac address both the allocator and the hooks get
4681 # the real final mac address rather than the 'auto' or 'generate' value.
4682 # There is a race condition between the generation and the instance object
4683 # creation, which means that we know the mac is valid now, but we're not
4684 # sure it will be when we actually add the instance. If things go bad
4685 # adding the instance will abort because of a duplicate mac, and the
4686 # creation job will fail.
4687 for nic in self.nics:
4688 if nic.mac in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
4689 nic.mac = self.cfg.GenerateMAC()
4693 if self.op.iallocator is not None:
4694 self._RunAllocator()
4696 #### node related checks
4698 # check primary node
4699 self.pnode = pnode = self.cfg.GetNodeInfo(self.op.pnode)
4700 assert self.pnode is not None, \
4701 "Cannot retrieve locked node %s" % self.op.pnode
4703 raise errors.OpPrereqError("Cannot use offline primary node '%s'" %
4706 raise errors.OpPrereqError("Cannot use drained primary node '%s'" %
4709 self.secondaries = []
4711 # mirror node verification
4712 if self.op.disk_template in constants.DTS_NET_MIRROR:
4713 if self.op.snode is None:
4714 raise errors.OpPrereqError("The networked disk templates need"
4716 if self.op.snode == pnode.name:
4717 raise errors.OpPrereqError("The secondary node cannot be"
4718 " the primary node.")
4719 _CheckNodeOnline(self, self.op.snode)
4720 _CheckNodeNotDrained(self, self.op.snode)
4721 self.secondaries.append(self.op.snode)
4723 nodenames = [pnode.name] + self.secondaries
4725 req_size = _ComputeDiskSize(self.op.disk_template,
4728 # Check lv size requirements
4729 if req_size is not None:
4730 nodeinfo = self.rpc.call_node_info(nodenames, self.cfg.GetVGName(),
4732 for node in nodenames:
4733 info = nodeinfo[node]
4737 raise errors.OpPrereqError("Cannot get current information"
4738 " from node '%s'" % node)
4739 vg_free = info.get('vg_free', None)
4740 if not isinstance(vg_free, int):
4741 raise errors.OpPrereqError("Can't compute free disk space on"
4743 if req_size > info['vg_free']:
4744 raise errors.OpPrereqError("Not enough disk space on target node %s."
4745 " %d MB available, %d MB required" %
4746 (node, info['vg_free'], req_size))
4748 _CheckHVParams(self, nodenames, self.op.hypervisor, self.op.hvparams)
4751 result = self.rpc.call_os_get(pnode.name, self.op.os_type)
4753 if not isinstance(result.data, objects.OS):
4754 raise errors.OpPrereqError("OS '%s' not in supported os list for"
4755 " primary node" % self.op.os_type)
4757 # bridge check on primary node
4758 bridges = [n.bridge for n in self.nics]
4759 result = self.rpc.call_bridges_exist(self.pnode.name, bridges)
4762 raise errors.OpPrereqError("One of the target bridges '%s' does not"
4763 " exist on destination node '%s'" %
4764 (",".join(bridges), pnode.name))
4766 # memory check on primary node
4768 _CheckNodeFreeMemory(self, self.pnode.name,
4769 "creating instance %s" % self.op.instance_name,
4770 self.be_full[constants.BE_MEMORY],
4773 def Exec(self, feedback_fn):
4774 """Create and add the instance to the cluster.
4777 instance = self.op.instance_name
4778 pnode_name = self.pnode.name
4780 ht_kind = self.op.hypervisor
4781 if ht_kind in constants.HTS_REQ_PORT:
4782 network_port = self.cfg.AllocatePort()
4786 ##if self.op.vnc_bind_address is None:
4787 ## self.op.vnc_bind_address = constants.VNC_DEFAULT_BIND_ADDRESS
4789 # this is needed because os.path.join does not accept None arguments
4790 if self.op.file_storage_dir is None:
4791 string_file_storage_dir = ""
4793 string_file_storage_dir = self.op.file_storage_dir
4795 # build the full file storage dir path
4796 file_storage_dir = os.path.normpath(os.path.join(
4797 self.cfg.GetFileStorageDir(),
4798 string_file_storage_dir, instance))
4801 disks = _GenerateDiskTemplate(self,
4802 self.op.disk_template,
4803 instance, pnode_name,
4807 self.op.file_driver,
4810 iobj = objects.Instance(name=instance, os=self.op.os_type,
4811 primary_node=pnode_name,
4812 nics=self.nics, disks=disks,
4813 disk_template=self.op.disk_template,
4815 network_port=network_port,
4816 beparams=self.op.beparams,
4817 hvparams=self.op.hvparams,
4818 hypervisor=self.op.hypervisor,
4821 feedback_fn("* creating instance disks...")
4823 _CreateDisks(self, iobj)
4824 except errors.OpExecError:
4825 self.LogWarning("Device creation failed, reverting...")
4827 _RemoveDisks(self, iobj)
4829 self.cfg.ReleaseDRBDMinors(instance)
4832 feedback_fn("adding instance %s to cluster config" % instance)
4834 self.cfg.AddInstance(iobj)
4835 # Declare that we don't want to remove the instance lock anymore, as we've
4836 # added the instance to the config
4837 del self.remove_locks[locking.LEVEL_INSTANCE]
4838 # Unlock all the nodes
4839 if self.op.mode == constants.INSTANCE_IMPORT:
4840 nodes_keep = [self.op.src_node]
4841 nodes_release = [node for node in self.acquired_locks[locking.LEVEL_NODE]
4842 if node != self.op.src_node]
4843 self.context.glm.release(locking.LEVEL_NODE, nodes_release)
4844 self.acquired_locks[locking.LEVEL_NODE] = nodes_keep
4846 self.context.glm.release(locking.LEVEL_NODE)
4847 del self.acquired_locks[locking.LEVEL_NODE]
4849 if self.op.wait_for_sync:
4850 disk_abort = not _WaitForSync(self, iobj)
4851 elif iobj.disk_template in constants.DTS_NET_MIRROR:
4852 # make sure the disks are not degraded (still sync-ing is ok)
4854 feedback_fn("* checking mirrors status")
4855 disk_abort = not _WaitForSync(self, iobj, oneshot=True)
4860 _RemoveDisks(self, iobj)
4861 self.cfg.RemoveInstance(iobj.name)
4862 # Make sure the instance lock gets removed
4863 self.remove_locks[locking.LEVEL_INSTANCE] = iobj.name
4864 raise errors.OpExecError("There are some degraded disks for"
4867 feedback_fn("creating os for instance %s on node %s" %
4868 (instance, pnode_name))
4870 if iobj.disk_template != constants.DT_DISKLESS:
4871 if self.op.mode == constants.INSTANCE_CREATE:
4872 feedback_fn("* running the instance OS create scripts...")
4873 result = self.rpc.call_instance_os_add(pnode_name, iobj, False)
4874 msg = result.RemoteFailMsg()
4876 raise errors.OpExecError("Could not add os for instance %s"
4878 (instance, pnode_name, msg))
4880 elif self.op.mode == constants.INSTANCE_IMPORT:
4881 feedback_fn("* running the instance OS import scripts...")
4882 src_node = self.op.src_node
4883 src_images = self.src_images
4884 cluster_name = self.cfg.GetClusterName()
4885 import_result = self.rpc.call_instance_os_import(pnode_name, iobj,
4886 src_node, src_images,
4888 import_result.Raise()
4889 for idx, result in enumerate(import_result.data):
4891 self.LogWarning("Could not import the image %s for instance"
4892 " %s, disk %d, on node %s" %
4893 (src_images[idx], instance, idx, pnode_name))
4895 # also checked in the prereq part
4896 raise errors.ProgrammerError("Unknown OS initialization mode '%s'"
4900 iobj.admin_up = True
4901 self.cfg.Update(iobj)
4902 logging.info("Starting instance %s on node %s", instance, pnode_name)
4903 feedback_fn("* starting instance...")
4904 result = self.rpc.call_instance_start(pnode_name, iobj, None, None)
4905 msg = result.RemoteFailMsg()
4907 raise errors.OpExecError("Could not start instance: %s" % msg)
4910 class LUConnectConsole(NoHooksLU):
4911 """Connect to an instance's console.
4913 This is somewhat special in that it returns the command line that
4914 you need to run on the master node in order to connect to the
4918 _OP_REQP = ["instance_name"]
4921 def ExpandNames(self):
4922 self._ExpandAndLockInstance()
4924 def CheckPrereq(self):
4925 """Check prerequisites.
4927 This checks that the instance is in the cluster.
4930 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
4931 assert self.instance is not None, \
4932 "Cannot retrieve locked instance %s" % self.op.instance_name
4933 _CheckNodeOnline(self, self.instance.primary_node)
4935 def Exec(self, feedback_fn):
4936 """Connect to the console of an instance
4939 instance = self.instance
4940 node = instance.primary_node
4942 node_insts = self.rpc.call_instance_list([node],
4943 [instance.hypervisor])[node]
4946 if instance.name not in node_insts.data:
4947 raise errors.OpExecError("Instance %s is not running." % instance.name)
4949 logging.debug("Connecting to console of %s on %s", instance.name, node)
4951 hyper = hypervisor.GetHypervisor(instance.hypervisor)
4952 cluster = self.cfg.GetClusterInfo()
4953 # beparams and hvparams are passed separately, to avoid editing the
4954 # instance and then saving the defaults in the instance itself.
4955 hvparams = cluster.FillHV(instance)
4956 beparams = cluster.FillBE(instance)
4957 console_cmd = hyper.GetShellCommandForConsole(instance, hvparams, beparams)
4960 return self.ssh.BuildCmd(node, "root", console_cmd, batch=True, tty=True)
4963 class LUReplaceDisks(LogicalUnit):
4964 """Replace the disks of an instance.
4967 HPATH = "mirrors-replace"
4968 HTYPE = constants.HTYPE_INSTANCE
4969 _OP_REQP = ["instance_name", "mode", "disks"]
4972 def CheckArguments(self):
4973 if not hasattr(self.op, "remote_node"):
4974 self.op.remote_node = None
4975 if not hasattr(self.op, "iallocator"):
4976 self.op.iallocator = None
4978 # check for valid parameter combination
4979 cnt = [self.op.remote_node, self.op.iallocator].count(None)
4980 if self.op.mode == constants.REPLACE_DISK_CHG:
4982 raise errors.OpPrereqError("When changing the secondary either an"
4983 " iallocator script must be used or the"
4986 raise errors.OpPrereqError("Give either the iallocator or the new"
4987 " secondary, not both")
4988 else: # not replacing the secondary
4990 raise errors.OpPrereqError("The iallocator and new node options can"
4991 " be used only when changing the"
4994 def ExpandNames(self):
4995 self._ExpandAndLockInstance()
4997 if self.op.iallocator is not None:
4998 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
4999 elif self.op.remote_node is not None:
5000 remote_node = self.cfg.ExpandNodeName(self.op.remote_node)
5001 if remote_node is None:
5002 raise errors.OpPrereqError("Node '%s' not known" %
5003 self.op.remote_node)
5004 self.op.remote_node = remote_node
5005 # Warning: do not remove the locking of the new secondary here
5006 # unless DRBD8.AddChildren is changed to work in parallel;
5007 # currently it doesn't since parallel invocations of
5008 # FindUnusedMinor will conflict
5009 self.needed_locks[locking.LEVEL_NODE] = [remote_node]
5010 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_APPEND
5012 self.needed_locks[locking.LEVEL_NODE] = []
5013 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5015 def DeclareLocks(self, level):
5016 # If we're not already locking all nodes in the set we have to declare the
5017 # instance's primary/secondary nodes.
5018 if (level == locking.LEVEL_NODE and
5019 self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET):
5020 self._LockInstancesNodes()
5022 def _RunAllocator(self):
5023 """Compute a new secondary node using an IAllocator.
5026 ial = IAllocator(self,
5027 mode=constants.IALLOCATOR_MODE_RELOC,
5028 name=self.op.instance_name,
5029 relocate_from=[self.sec_node])
5031 ial.Run(self.op.iallocator)
5034 raise errors.OpPrereqError("Can't compute nodes using"
5035 " iallocator '%s': %s" % (self.op.iallocator,
5037 if len(ial.nodes) != ial.required_nodes:
5038 raise errors.OpPrereqError("iallocator '%s' returned invalid number"
5039 " of nodes (%s), required %s" %
5040 (len(ial.nodes), ial.required_nodes))
5041 self.op.remote_node = ial.nodes[0]
5042 self.LogInfo("Selected new secondary for the instance: %s",
5043 self.op.remote_node)
5045 def BuildHooksEnv(self):
5048 This runs on the master, the primary and all the secondaries.
5052 "MODE": self.op.mode,
5053 "NEW_SECONDARY": self.op.remote_node,
5054 "OLD_SECONDARY": self.instance.secondary_nodes[0],
5056 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
5058 self.cfg.GetMasterNode(),
5059 self.instance.primary_node,
5061 if self.op.remote_node is not None:
5062 nl.append(self.op.remote_node)
5065 def CheckPrereq(self):
5066 """Check prerequisites.
5068 This checks that the instance is in the cluster.
5071 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5072 assert instance is not None, \
5073 "Cannot retrieve locked instance %s" % self.op.instance_name
5074 self.instance = instance
5076 if instance.disk_template != constants.DT_DRBD8:
5077 raise errors.OpPrereqError("Can only run replace disks for DRBD8-based"
5080 if len(instance.secondary_nodes) != 1:
5081 raise errors.OpPrereqError("The instance has a strange layout,"
5082 " expected one secondary but found %d" %
5083 len(instance.secondary_nodes))
5085 self.sec_node = instance.secondary_nodes[0]
5087 if self.op.iallocator is not None:
5088 self._RunAllocator()
5090 remote_node = self.op.remote_node
5091 if remote_node is not None:
5092 self.remote_node_info = self.cfg.GetNodeInfo(remote_node)
5093 assert self.remote_node_info is not None, \
5094 "Cannot retrieve locked node %s" % remote_node
5096 self.remote_node_info = None
5097 if remote_node == instance.primary_node:
5098 raise errors.OpPrereqError("The specified node is the primary node of"
5100 elif remote_node == self.sec_node:
5101 raise errors.OpPrereqError("The specified node is already the"
5102 " secondary node of the instance.")
5104 if self.op.mode == constants.REPLACE_DISK_PRI:
5105 n1 = self.tgt_node = instance.primary_node
5106 n2 = self.oth_node = self.sec_node
5107 elif self.op.mode == constants.REPLACE_DISK_SEC:
5108 n1 = self.tgt_node = self.sec_node
5109 n2 = self.oth_node = instance.primary_node
5110 elif self.op.mode == constants.REPLACE_DISK_CHG:
5111 n1 = self.new_node = remote_node
5112 n2 = self.oth_node = instance.primary_node
5113 self.tgt_node = self.sec_node
5114 _CheckNodeNotDrained(self, remote_node)
5116 raise errors.ProgrammerError("Unhandled disk replace mode")
5118 _CheckNodeOnline(self, n1)
5119 _CheckNodeOnline(self, n2)
5121 if not self.op.disks:
5122 self.op.disks = range(len(instance.disks))
5124 for disk_idx in self.op.disks:
5125 instance.FindDisk(disk_idx)
5127 def _ExecD8DiskOnly(self, feedback_fn):
5128 """Replace a disk on the primary or secondary for dbrd8.
5130 The algorithm for replace is quite complicated:
5132 1. for each disk to be replaced:
5134 1. create new LVs on the target node with unique names
5135 1. detach old LVs from the drbd device
5136 1. rename old LVs to name_replaced.<time_t>
5137 1. rename new LVs to old LVs
5138 1. attach the new LVs (with the old names now) to the drbd device
5140 1. wait for sync across all devices
5142 1. for each modified disk:
5144 1. remove old LVs (which have the name name_replaces.<time_t>)
5146 Failures are not very well handled.
5150 warning, info = (self.proc.LogWarning, self.proc.LogInfo)
5151 instance = self.instance
5153 vgname = self.cfg.GetVGName()
5156 tgt_node = self.tgt_node
5157 oth_node = self.oth_node
5159 # Step: check device activation
5160 self.proc.LogStep(1, steps_total, "check device existence")
5161 info("checking volume groups")
5162 my_vg = cfg.GetVGName()
5163 results = self.rpc.call_vg_list([oth_node, tgt_node])
5165 raise errors.OpExecError("Can't list volume groups on the nodes")
5166 for node in oth_node, tgt_node:
5168 if res.failed or not res.data or my_vg not in res.data:
5169 raise errors.OpExecError("Volume group '%s' not found on %s" %
5171 for idx, dev in enumerate(instance.disks):
5172 if idx not in self.op.disks:
5174 for node in tgt_node, oth_node:
5175 info("checking disk/%d on %s" % (idx, node))
5176 cfg.SetDiskID(dev, node)
5177 result = self.rpc.call_blockdev_find(node, dev)
5178 msg = result.RemoteFailMsg()
5179 if not msg and not result.payload:
5180 msg = "disk not found"
5182 raise errors.OpExecError("Can't find disk/%d on node %s: %s" %
5185 # Step: check other node consistency
5186 self.proc.LogStep(2, steps_total, "check peer consistency")
5187 for idx, dev in enumerate(instance.disks):
5188 if idx not in self.op.disks:
5190 info("checking disk/%d consistency on %s" % (idx, oth_node))
5191 if not _CheckDiskConsistency(self, dev, oth_node,
5192 oth_node==instance.primary_node):
5193 raise errors.OpExecError("Peer node (%s) has degraded storage, unsafe"
5194 " to replace disks on this node (%s)" %
5195 (oth_node, tgt_node))
5197 # Step: create new storage
5198 self.proc.LogStep(3, steps_total, "allocate new storage")
5199 for idx, dev in enumerate(instance.disks):
5200 if idx not in self.op.disks:
5203 cfg.SetDiskID(dev, tgt_node)
5204 lv_names = [".disk%d_%s" % (idx, suf)
5205 for suf in ["data", "meta"]]
5206 names = _GenerateUniqueNames(self, lv_names)
5207 lv_data = objects.Disk(dev_type=constants.LD_LV, size=size,
5208 logical_id=(vgname, names[0]))
5209 lv_meta = objects.Disk(dev_type=constants.LD_LV, size=128,
5210 logical_id=(vgname, names[1]))
5211 new_lvs = [lv_data, lv_meta]
5212 old_lvs = dev.children
5213 iv_names[dev.iv_name] = (dev, old_lvs, new_lvs)
5214 info("creating new local storage on %s for %s" %
5215 (tgt_node, dev.iv_name))
5216 # we pass force_create=True to force the LVM creation
5217 for new_lv in new_lvs:
5218 _CreateBlockDev(self, tgt_node, instance, new_lv, True,
5219 _GetInstanceInfoText(instance), False)
5221 # Step: for each lv, detach+rename*2+attach
5222 self.proc.LogStep(4, steps_total, "change drbd configuration")
5223 for dev, old_lvs, new_lvs in iv_names.itervalues():
5224 info("detaching %s drbd from local storage" % dev.iv_name)
5225 result = self.rpc.call_blockdev_removechildren(tgt_node, dev, old_lvs)
5228 raise errors.OpExecError("Can't detach drbd from local storage on node"
5229 " %s for device %s" % (tgt_node, dev.iv_name))
5231 #cfg.Update(instance)
5233 # ok, we created the new LVs, so now we know we have the needed
5234 # storage; as such, we proceed on the target node to rename
5235 # old_lv to _old, and new_lv to old_lv; note that we rename LVs
5236 # using the assumption that logical_id == physical_id (which in
5237 # turn is the unique_id on that node)
5239 # FIXME(iustin): use a better name for the replaced LVs
5240 temp_suffix = int(time.time())
5241 ren_fn = lambda d, suff: (d.physical_id[0],
5242 d.physical_id[1] + "_replaced-%s" % suff)
5243 # build the rename list based on what LVs exist on the node
5245 for to_ren in old_lvs:
5246 result = self.rpc.call_blockdev_find(tgt_node, to_ren)
5247 if not result.RemoteFailMsg() and result.payload:
5249 rlist.append((to_ren, ren_fn(to_ren, temp_suffix)))
5251 info("renaming the old LVs on the target node")
5252 result = self.rpc.call_blockdev_rename(tgt_node, rlist)
5255 raise errors.OpExecError("Can't rename old LVs on node %s" % tgt_node)
5256 # now we rename the new LVs to the old LVs
5257 info("renaming the new LVs on the target node")
5258 rlist = [(new, old.physical_id) for old, new in zip(old_lvs, new_lvs)]
5259 result = self.rpc.call_blockdev_rename(tgt_node, rlist)
5262 raise errors.OpExecError("Can't rename new LVs on node %s" % tgt_node)
5264 for old, new in zip(old_lvs, new_lvs):
5265 new.logical_id = old.logical_id
5266 cfg.SetDiskID(new, tgt_node)
5268 for disk in old_lvs:
5269 disk.logical_id = ren_fn(disk, temp_suffix)
5270 cfg.SetDiskID(disk, tgt_node)
5272 # now that the new lvs have the old name, we can add them to the device
5273 info("adding new mirror component on %s" % tgt_node)
5274 result = self.rpc.call_blockdev_addchildren(tgt_node, dev, new_lvs)
5275 if result.failed or not result.data:
5276 for new_lv in new_lvs:
5277 msg = self.rpc.call_blockdev_remove(tgt_node, new_lv).RemoteFailMsg()
5279 warning("Can't rollback device %s: %s", dev, msg,
5280 hint="cleanup manually the unused logical volumes")
5281 raise errors.OpExecError("Can't add local storage to drbd")
5283 dev.children = new_lvs
5284 cfg.Update(instance)
5286 # Step: wait for sync
5288 # this can fail as the old devices are degraded and _WaitForSync
5289 # does a combined result over all disks, so we don't check its
5291 self.proc.LogStep(5, steps_total, "sync devices")
5292 _WaitForSync(self, instance, unlock=True)
5294 # so check manually all the devices
5295 for name, (dev, old_lvs, new_lvs) in iv_names.iteritems():
5296 cfg.SetDiskID(dev, instance.primary_node)
5297 result = self.rpc.call_blockdev_find(instance.primary_node, dev)
5298 msg = result.RemoteFailMsg()
5299 if not msg and not result.payload:
5300 msg = "disk not found"
5302 raise errors.OpExecError("Can't find DRBD device %s: %s" %
5304 if result.payload[5]:
5305 raise errors.OpExecError("DRBD device %s is degraded!" % name)
5307 # Step: remove old storage
5308 self.proc.LogStep(6, steps_total, "removing old storage")
5309 for name, (dev, old_lvs, new_lvs) in iv_names.iteritems():
5310 info("remove logical volumes for %s" % name)
5312 cfg.SetDiskID(lv, tgt_node)
5313 msg = self.rpc.call_blockdev_remove(tgt_node, lv).RemoteFailMsg()
5315 warning("Can't remove old LV: %s" % msg,
5316 hint="manually remove unused LVs")
5319 def _ExecD8Secondary(self, feedback_fn):
5320 """Replace the secondary node for drbd8.
5322 The algorithm for replace is quite complicated:
5323 - for all disks of the instance:
5324 - create new LVs on the new node with same names
5325 - shutdown the drbd device on the old secondary
5326 - disconnect the drbd network on the primary
5327 - create the drbd device on the new secondary
5328 - network attach the drbd on the primary, using an artifice:
5329 the drbd code for Attach() will connect to the network if it
5330 finds a device which is connected to the good local disks but
5332 - wait for sync across all devices
5333 - remove all disks from the old secondary
5335 Failures are not very well handled.
5339 warning, info = (self.proc.LogWarning, self.proc.LogInfo)
5340 instance = self.instance
5344 old_node = self.tgt_node
5345 new_node = self.new_node
5346 pri_node = instance.primary_node
5348 old_node: self.cfg.GetNodeInfo(old_node).secondary_ip,
5349 new_node: self.cfg.GetNodeInfo(new_node).secondary_ip,
5350 pri_node: self.cfg.GetNodeInfo(pri_node).secondary_ip,
5353 # Step: check device activation
5354 self.proc.LogStep(1, steps_total, "check device existence")
5355 info("checking volume groups")
5356 my_vg = cfg.GetVGName()
5357 results = self.rpc.call_vg_list([pri_node, new_node])
5358 for node in pri_node, new_node:
5360 if res.failed or not res.data or my_vg not in res.data:
5361 raise errors.OpExecError("Volume group '%s' not found on %s" %
5363 for idx, dev in enumerate(instance.disks):
5364 if idx not in self.op.disks:
5366 info("checking disk/%d on %s" % (idx, pri_node))
5367 cfg.SetDiskID(dev, pri_node)
5368 result = self.rpc.call_blockdev_find(pri_node, dev)
5369 msg = result.RemoteFailMsg()
5370 if not msg and not result.payload:
5371 msg = "disk not found"
5373 raise errors.OpExecError("Can't find disk/%d on node %s: %s" %
5374 (idx, pri_node, msg))
5376 # Step: check other node consistency
5377 self.proc.LogStep(2, steps_total, "check peer consistency")
5378 for idx, dev in enumerate(instance.disks):
5379 if idx not in self.op.disks:
5381 info("checking disk/%d consistency on %s" % (idx, pri_node))
5382 if not _CheckDiskConsistency(self, dev, pri_node, True, ldisk=True):
5383 raise errors.OpExecError("Primary node (%s) has degraded storage,"
5384 " unsafe to replace the secondary" %
5387 # Step: create new storage
5388 self.proc.LogStep(3, steps_total, "allocate new storage")
5389 for idx, dev in enumerate(instance.disks):
5390 info("adding new local storage on %s for disk/%d" %
5392 # we pass force_create=True to force LVM creation
5393 for new_lv in dev.children:
5394 _CreateBlockDev(self, new_node, instance, new_lv, True,
5395 _GetInstanceInfoText(instance), False)
5397 # Step 4: dbrd minors and drbd setups changes
5398 # after this, we must manually remove the drbd minors on both the
5399 # error and the success paths
5400 minors = cfg.AllocateDRBDMinor([new_node for dev in instance.disks],
5402 logging.debug("Allocated minors %s" % (minors,))
5403 self.proc.LogStep(4, steps_total, "changing drbd configuration")
5404 for idx, (dev, new_minor) in enumerate(zip(instance.disks, minors)):
5406 info("activating a new drbd on %s for disk/%d" % (new_node, idx))
5407 # create new devices on new_node; note that we create two IDs:
5408 # one without port, so the drbd will be activated without
5409 # networking information on the new node at this stage, and one
5410 # with network, for the latter activation in step 4
5411 (o_node1, o_node2, o_port, o_minor1, o_minor2, o_secret) = dev.logical_id
5412 if pri_node == o_node1:
5417 new_alone_id = (pri_node, new_node, None, p_minor, new_minor, o_secret)
5418 new_net_id = (pri_node, new_node, o_port, p_minor, new_minor, o_secret)
5420 iv_names[idx] = (dev, dev.children, new_net_id)
5421 logging.debug("Allocated new_minor: %s, new_logical_id: %s", new_minor,
5423 new_drbd = objects.Disk(dev_type=constants.LD_DRBD8,
5424 logical_id=new_alone_id,
5425 children=dev.children)
5427 _CreateSingleBlockDev(self, new_node, instance, new_drbd,
5428 _GetInstanceInfoText(instance), False)
5429 except errors.GenericError:
5430 self.cfg.ReleaseDRBDMinors(instance.name)
5433 for idx, dev in enumerate(instance.disks):
5434 # we have new devices, shutdown the drbd on the old secondary
5435 info("shutting down drbd for disk/%d on old node" % idx)
5436 cfg.SetDiskID(dev, old_node)
5437 msg = self.rpc.call_blockdev_shutdown(old_node, dev).RemoteFailMsg()
5439 warning("Failed to shutdown drbd for disk/%d on old node: %s" %
5441 hint="Please cleanup this device manually as soon as possible")
5443 info("detaching primary drbds from the network (=> standalone)")
5444 result = self.rpc.call_drbd_disconnect_net([pri_node], nodes_ip,
5445 instance.disks)[pri_node]
5447 msg = result.RemoteFailMsg()
5449 # detaches didn't succeed (unlikely)
5450 self.cfg.ReleaseDRBDMinors(instance.name)
5451 raise errors.OpExecError("Can't detach the disks from the network on"
5452 " old node: %s" % (msg,))
5454 # if we managed to detach at least one, we update all the disks of
5455 # the instance to point to the new secondary
5456 info("updating instance configuration")
5457 for dev, _, new_logical_id in iv_names.itervalues():
5458 dev.logical_id = new_logical_id
5459 cfg.SetDiskID(dev, pri_node)
5460 cfg.Update(instance)
5462 # and now perform the drbd attach
5463 info("attaching primary drbds to new secondary (standalone => connected)")
5464 result = self.rpc.call_drbd_attach_net([pri_node, new_node], nodes_ip,
5465 instance.disks, instance.name,
5467 for to_node, to_result in result.items():
5468 msg = to_result.RemoteFailMsg()
5470 warning("can't attach drbd disks on node %s: %s", to_node, msg,
5471 hint="please do a gnt-instance info to see the"
5474 # this can fail as the old devices are degraded and _WaitForSync
5475 # does a combined result over all disks, so we don't check its
5477 self.proc.LogStep(5, steps_total, "sync devices")
5478 _WaitForSync(self, instance, unlock=True)
5480 # so check manually all the devices
5481 for idx, (dev, old_lvs, _) in iv_names.iteritems():
5482 cfg.SetDiskID(dev, pri_node)
5483 result = self.rpc.call_blockdev_find(pri_node, dev)
5484 msg = result.RemoteFailMsg()
5485 if not msg and not result.payload:
5486 msg = "disk not found"
5488 raise errors.OpExecError("Can't find DRBD device disk/%d: %s" %
5490 if result.payload[5]:
5491 raise errors.OpExecError("DRBD device disk/%d is degraded!" % idx)
5493 self.proc.LogStep(6, steps_total, "removing old storage")
5494 for idx, (dev, old_lvs, _) in iv_names.iteritems():
5495 info("remove logical volumes for disk/%d" % idx)
5497 cfg.SetDiskID(lv, old_node)
5498 msg = self.rpc.call_blockdev_remove(old_node, lv).RemoteFailMsg()
5500 warning("Can't remove LV on old secondary: %s", msg,
5501 hint="Cleanup stale volumes by hand")
5503 def Exec(self, feedback_fn):
5504 """Execute disk replacement.
5506 This dispatches the disk replacement to the appropriate handler.
5509 instance = self.instance
5511 # Activate the instance disks if we're replacing them on a down instance
5512 if not instance.admin_up:
5513 _StartInstanceDisks(self, instance, True)
5515 if self.op.mode == constants.REPLACE_DISK_CHG:
5516 fn = self._ExecD8Secondary
5518 fn = self._ExecD8DiskOnly
5520 ret = fn(feedback_fn)
5522 # Deactivate the instance disks if we're replacing them on a down instance
5523 if not instance.admin_up:
5524 _SafeShutdownInstanceDisks(self, instance)
5529 class LUGrowDisk(LogicalUnit):
5530 """Grow a disk of an instance.
5534 HTYPE = constants.HTYPE_INSTANCE
5535 _OP_REQP = ["instance_name", "disk", "amount", "wait_for_sync"]
5538 def ExpandNames(self):
5539 self._ExpandAndLockInstance()
5540 self.needed_locks[locking.LEVEL_NODE] = []
5541 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5543 def DeclareLocks(self, level):
5544 if level == locking.LEVEL_NODE:
5545 self._LockInstancesNodes()
5547 def BuildHooksEnv(self):
5550 This runs on the master, the primary and all the secondaries.
5554 "DISK": self.op.disk,
5555 "AMOUNT": self.op.amount,
5557 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
5559 self.cfg.GetMasterNode(),
5560 self.instance.primary_node,
5564 def CheckPrereq(self):
5565 """Check prerequisites.
5567 This checks that the instance is in the cluster.
5570 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5571 assert instance is not None, \
5572 "Cannot retrieve locked instance %s" % self.op.instance_name
5573 nodenames = list(instance.all_nodes)
5574 for node in nodenames:
5575 _CheckNodeOnline(self, node)
5578 self.instance = instance
5580 if instance.disk_template not in (constants.DT_PLAIN, constants.DT_DRBD8):
5581 raise errors.OpPrereqError("Instance's disk layout does not support"
5584 self.disk = instance.FindDisk(self.op.disk)
5586 nodeinfo = self.rpc.call_node_info(nodenames, self.cfg.GetVGName(),
5587 instance.hypervisor)
5588 for node in nodenames:
5589 info = nodeinfo[node]
5590 if info.failed or not info.data:
5591 raise errors.OpPrereqError("Cannot get current information"
5592 " from node '%s'" % node)
5593 vg_free = info.data.get('vg_free', None)
5594 if not isinstance(vg_free, int):
5595 raise errors.OpPrereqError("Can't compute free disk space on"
5597 if self.op.amount > vg_free:
5598 raise errors.OpPrereqError("Not enough disk space on target node %s:"
5599 " %d MiB available, %d MiB required" %
5600 (node, vg_free, self.op.amount))
5602 def Exec(self, feedback_fn):
5603 """Execute disk grow.
5606 instance = self.instance
5608 for node in instance.all_nodes:
5609 self.cfg.SetDiskID(disk, node)
5610 result = self.rpc.call_blockdev_grow(node, disk, self.op.amount)
5611 msg = result.RemoteFailMsg()
5613 raise errors.OpExecError("Grow request failed to node %s: %s" %
5615 disk.RecordGrow(self.op.amount)
5616 self.cfg.Update(instance)
5617 if self.op.wait_for_sync:
5618 disk_abort = not _WaitForSync(self, instance)
5620 self.proc.LogWarning("Warning: disk sync-ing has not returned a good"
5621 " status.\nPlease check the instance.")
5624 class LUQueryInstanceData(NoHooksLU):
5625 """Query runtime instance data.
5628 _OP_REQP = ["instances", "static"]
5631 def ExpandNames(self):
5632 self.needed_locks = {}
5633 self.share_locks = dict(((i, 1) for i in locking.LEVELS))
5635 if not isinstance(self.op.instances, list):
5636 raise errors.OpPrereqError("Invalid argument type 'instances'")
5638 if self.op.instances:
5639 self.wanted_names = []
5640 for name in self.op.instances:
5641 full_name = self.cfg.ExpandInstanceName(name)
5642 if full_name is None:
5643 raise errors.OpPrereqError("Instance '%s' not known" % name)
5644 self.wanted_names.append(full_name)
5645 self.needed_locks[locking.LEVEL_INSTANCE] = self.wanted_names
5647 self.wanted_names = None
5648 self.needed_locks[locking.LEVEL_INSTANCE] = locking.ALL_SET
5650 self.needed_locks[locking.LEVEL_NODE] = []
5651 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5653 def DeclareLocks(self, level):
5654 if level == locking.LEVEL_NODE:
5655 self._LockInstancesNodes()
5657 def CheckPrereq(self):
5658 """Check prerequisites.
5660 This only checks the optional instance list against the existing names.
5663 if self.wanted_names is None:
5664 self.wanted_names = self.acquired_locks[locking.LEVEL_INSTANCE]
5666 self.wanted_instances = [self.cfg.GetInstanceInfo(name) for name
5667 in self.wanted_names]
5670 def _ComputeDiskStatus(self, instance, snode, dev):
5671 """Compute block device status.
5674 static = self.op.static
5676 self.cfg.SetDiskID(dev, instance.primary_node)
5677 dev_pstatus = self.rpc.call_blockdev_find(instance.primary_node, dev)
5678 if dev_pstatus.offline:
5681 msg = dev_pstatus.RemoteFailMsg()
5683 raise errors.OpExecError("Can't compute disk status for %s: %s" %
5684 (instance.name, msg))
5685 dev_pstatus = dev_pstatus.payload
5689 if dev.dev_type in constants.LDS_DRBD:
5690 # we change the snode then (otherwise we use the one passed in)
5691 if dev.logical_id[0] == instance.primary_node:
5692 snode = dev.logical_id[1]
5694 snode = dev.logical_id[0]
5696 if snode and not static:
5697 self.cfg.SetDiskID(dev, snode)
5698 dev_sstatus = self.rpc.call_blockdev_find(snode, dev)
5699 if dev_sstatus.offline:
5702 msg = dev_sstatus.RemoteFailMsg()
5704 raise errors.OpExecError("Can't compute disk status for %s: %s" %
5705 (instance.name, msg))
5706 dev_sstatus = dev_sstatus.payload
5711 dev_children = [self._ComputeDiskStatus(instance, snode, child)
5712 for child in dev.children]
5717 "iv_name": dev.iv_name,
5718 "dev_type": dev.dev_type,
5719 "logical_id": dev.logical_id,
5720 "physical_id": dev.physical_id,
5721 "pstatus": dev_pstatus,
5722 "sstatus": dev_sstatus,
5723 "children": dev_children,
5729 def Exec(self, feedback_fn):
5730 """Gather and return data"""
5733 cluster = self.cfg.GetClusterInfo()
5735 for instance in self.wanted_instances:
5736 if not self.op.static:
5737 remote_info = self.rpc.call_instance_info(instance.primary_node,
5739 instance.hypervisor)
5741 remote_info = remote_info.data
5742 if remote_info and "state" in remote_info:
5745 remote_state = "down"
5748 if instance.admin_up:
5751 config_state = "down"
5753 disks = [self._ComputeDiskStatus(instance, None, device)
5754 for device in instance.disks]
5757 "name": instance.name,
5758 "config_state": config_state,
5759 "run_state": remote_state,
5760 "pnode": instance.primary_node,
5761 "snodes": instance.secondary_nodes,
5763 "nics": [(nic.mac, nic.ip, nic.bridge) for nic in instance.nics],
5765 "hypervisor": instance.hypervisor,
5766 "network_port": instance.network_port,
5767 "hv_instance": instance.hvparams,
5768 "hv_actual": cluster.FillHV(instance),
5769 "be_instance": instance.beparams,
5770 "be_actual": cluster.FillBE(instance),
5773 result[instance.name] = idict
5778 class LUSetInstanceParams(LogicalUnit):
5779 """Modifies an instances's parameters.
5782 HPATH = "instance-modify"
5783 HTYPE = constants.HTYPE_INSTANCE
5784 _OP_REQP = ["instance_name"]
5787 def CheckArguments(self):
5788 if not hasattr(self.op, 'nics'):
5790 if not hasattr(self.op, 'disks'):
5792 if not hasattr(self.op, 'beparams'):
5793 self.op.beparams = {}
5794 if not hasattr(self.op, 'hvparams'):
5795 self.op.hvparams = {}
5796 self.op.force = getattr(self.op, "force", False)
5797 if not (self.op.nics or self.op.disks or
5798 self.op.hvparams or self.op.beparams):
5799 raise errors.OpPrereqError("No changes submitted")
5803 for disk_op, disk_dict in self.op.disks:
5804 if disk_op == constants.DDM_REMOVE:
5807 elif disk_op == constants.DDM_ADD:
5810 if not isinstance(disk_op, int):
5811 raise errors.OpPrereqError("Invalid disk index")
5812 if disk_op == constants.DDM_ADD:
5813 mode = disk_dict.setdefault('mode', constants.DISK_RDWR)
5814 if mode not in constants.DISK_ACCESS_SET:
5815 raise errors.OpPrereqError("Invalid disk access mode '%s'" % mode)
5816 size = disk_dict.get('size', None)
5818 raise errors.OpPrereqError("Required disk parameter size missing")
5821 except ValueError, err:
5822 raise errors.OpPrereqError("Invalid disk size parameter: %s" %
5824 disk_dict['size'] = size
5826 # modification of disk
5827 if 'size' in disk_dict:
5828 raise errors.OpPrereqError("Disk size change not possible, use"
5831 if disk_addremove > 1:
5832 raise errors.OpPrereqError("Only one disk add or remove operation"
5833 " supported at a time")
5837 for nic_op, nic_dict in self.op.nics:
5838 if nic_op == constants.DDM_REMOVE:
5841 elif nic_op == constants.DDM_ADD:
5844 if not isinstance(nic_op, int):
5845 raise errors.OpPrereqError("Invalid nic index")
5847 # nic_dict should be a dict
5848 nic_ip = nic_dict.get('ip', None)
5849 if nic_ip is not None:
5850 if nic_ip.lower() == constants.VALUE_NONE:
5851 nic_dict['ip'] = None
5853 if not utils.IsValidIP(nic_ip):
5854 raise errors.OpPrereqError("Invalid IP address '%s'" % nic_ip)
5856 if nic_op == constants.DDM_ADD:
5857 nic_bridge = nic_dict.get('bridge', None)
5858 if nic_bridge is None:
5859 nic_dict['bridge'] = self.cfg.GetDefBridge()
5860 nic_mac = nic_dict.get('mac', None)
5862 nic_dict['mac'] = constants.VALUE_AUTO
5864 if 'mac' in nic_dict:
5865 nic_mac = nic_dict['mac']
5866 if nic_mac not in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
5867 if not utils.IsValidMac(nic_mac):
5868 raise errors.OpPrereqError("Invalid MAC address %s" % nic_mac)
5869 if nic_op != constants.DDM_ADD and nic_mac == constants.VALUE_AUTO:
5870 raise errors.OpPrereqError("'auto' is not a valid MAC address when"
5871 " modifying an existing nic")
5873 if nic_addremove > 1:
5874 raise errors.OpPrereqError("Only one NIC add or remove operation"
5875 " supported at a time")
5877 def ExpandNames(self):
5878 self._ExpandAndLockInstance()
5879 self.needed_locks[locking.LEVEL_NODE] = []
5880 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5882 def DeclareLocks(self, level):
5883 if level == locking.LEVEL_NODE:
5884 self._LockInstancesNodes()
5886 def BuildHooksEnv(self):
5889 This runs on the master, primary and secondaries.
5893 if constants.BE_MEMORY in self.be_new:
5894 args['memory'] = self.be_new[constants.BE_MEMORY]
5895 if constants.BE_VCPUS in self.be_new:
5896 args['vcpus'] = self.be_new[constants.BE_VCPUS]
5897 # TODO: export disk changes. Note: _BuildInstanceHookEnv* don't export disk
5898 # information at all.
5901 nic_override = dict(self.op.nics)
5902 for idx, nic in enumerate(self.instance.nics):
5903 if idx in nic_override:
5904 this_nic_override = nic_override[idx]
5906 this_nic_override = {}
5907 if 'ip' in this_nic_override:
5908 ip = this_nic_override['ip']
5911 if 'bridge' in this_nic_override:
5912 bridge = this_nic_override['bridge']
5915 if 'mac' in this_nic_override:
5916 mac = this_nic_override['mac']
5919 args['nics'].append((ip, bridge, mac))
5920 if constants.DDM_ADD in nic_override:
5921 ip = nic_override[constants.DDM_ADD].get('ip', None)
5922 bridge = nic_override[constants.DDM_ADD]['bridge']
5923 mac = nic_override[constants.DDM_ADD]['mac']
5924 args['nics'].append((ip, bridge, mac))
5925 elif constants.DDM_REMOVE in nic_override:
5926 del args['nics'][-1]
5928 env = _BuildInstanceHookEnvByObject(self, self.instance, override=args)
5929 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
5932 def CheckPrereq(self):
5933 """Check prerequisites.
5935 This only checks the instance list against the existing names.
5938 force = self.force = self.op.force
5940 # checking the new params on the primary/secondary nodes
5942 instance = self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5943 assert self.instance is not None, \
5944 "Cannot retrieve locked instance %s" % self.op.instance_name
5945 pnode = instance.primary_node
5946 nodelist = list(instance.all_nodes)
5948 # hvparams processing
5949 if self.op.hvparams:
5950 i_hvdict = copy.deepcopy(instance.hvparams)
5951 for key, val in self.op.hvparams.iteritems():
5952 if val == constants.VALUE_DEFAULT:
5959 cluster = self.cfg.GetClusterInfo()
5960 utils.ForceDictType(i_hvdict, constants.HVS_PARAMETER_TYPES)
5961 hv_new = cluster.FillDict(cluster.hvparams[instance.hypervisor],
5964 hypervisor.GetHypervisor(
5965 instance.hypervisor).CheckParameterSyntax(hv_new)
5966 _CheckHVParams(self, nodelist, instance.hypervisor, hv_new)
5967 self.hv_new = hv_new # the new actual values
5968 self.hv_inst = i_hvdict # the new dict (without defaults)
5970 self.hv_new = self.hv_inst = {}
5972 # beparams processing
5973 if self.op.beparams:
5974 i_bedict = copy.deepcopy(instance.beparams)
5975 for key, val in self.op.beparams.iteritems():
5976 if val == constants.VALUE_DEFAULT:
5983 cluster = self.cfg.GetClusterInfo()
5984 utils.ForceDictType(i_bedict, constants.BES_PARAMETER_TYPES)
5985 be_new = cluster.FillDict(cluster.beparams[constants.BEGR_DEFAULT],
5987 self.be_new = be_new # the new actual values
5988 self.be_inst = i_bedict # the new dict (without defaults)
5990 self.be_new = self.be_inst = {}
5994 if constants.BE_MEMORY in self.op.beparams and not self.force:
5995 mem_check_list = [pnode]
5996 if be_new[constants.BE_AUTO_BALANCE]:
5997 # either we changed auto_balance to yes or it was from before
5998 mem_check_list.extend(instance.secondary_nodes)
5999 instance_info = self.rpc.call_instance_info(pnode, instance.name,
6000 instance.hypervisor)
6001 nodeinfo = self.rpc.call_node_info(mem_check_list, self.cfg.GetVGName(),
6002 instance.hypervisor)
6003 if nodeinfo[pnode].failed or not isinstance(nodeinfo[pnode].data, dict):
6004 # Assume the primary node is unreachable and go ahead
6005 self.warn.append("Can't get info from primary node %s" % pnode)
6007 if not instance_info.failed and instance_info.data:
6008 current_mem = int(instance_info.data['memory'])
6010 # Assume instance not running
6011 # (there is a slight race condition here, but it's not very probable,
6012 # and we have no other way to check)
6014 miss_mem = (be_new[constants.BE_MEMORY] - current_mem -
6015 nodeinfo[pnode].data['memory_free'])
6017 raise errors.OpPrereqError("This change will prevent the instance"
6018 " from starting, due to %d MB of memory"
6019 " missing on its primary node" % miss_mem)
6021 if be_new[constants.BE_AUTO_BALANCE]:
6022 for node, nres in nodeinfo.iteritems():
6023 if node not in instance.secondary_nodes:
6025 if nres.failed or not isinstance(nres.data, dict):
6026 self.warn.append("Can't get info from secondary node %s" % node)
6027 elif be_new[constants.BE_MEMORY] > nres.data['memory_free']:
6028 self.warn.append("Not enough memory to failover instance to"
6029 " secondary node %s" % node)
6032 for nic_op, nic_dict in self.op.nics:
6033 if nic_op == constants.DDM_REMOVE:
6034 if not instance.nics:
6035 raise errors.OpPrereqError("Instance has no NICs, cannot remove")
6037 if nic_op != constants.DDM_ADD:
6039 if nic_op < 0 or nic_op >= len(instance.nics):
6040 raise errors.OpPrereqError("Invalid NIC index %s, valid values"
6042 (nic_op, len(instance.nics)))
6043 if 'bridge' in nic_dict:
6044 nic_bridge = nic_dict['bridge']
6045 if nic_bridge is None:
6046 raise errors.OpPrereqError('Cannot set the nic bridge to None')
6047 if not self.rpc.call_bridges_exist(pnode, [nic_bridge]):
6048 msg = ("Bridge '%s' doesn't exist on one of"
6049 " the instance nodes" % nic_bridge)
6051 self.warn.append(msg)
6053 raise errors.OpPrereqError(msg)
6054 if 'mac' in nic_dict:
6055 nic_mac = nic_dict['mac']
6057 raise errors.OpPrereqError('Cannot set the nic mac to None')
6058 elif nic_mac in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
6059 # otherwise generate the mac
6060 nic_dict['mac'] = self.cfg.GenerateMAC()
6062 # or validate/reserve the current one
6063 if self.cfg.IsMacInUse(nic_mac):
6064 raise errors.OpPrereqError("MAC address %s already in use"
6065 " in cluster" % nic_mac)
6068 if self.op.disks and instance.disk_template == constants.DT_DISKLESS:
6069 raise errors.OpPrereqError("Disk operations not supported for"
6070 " diskless instances")
6071 for disk_op, disk_dict in self.op.disks:
6072 if disk_op == constants.DDM_REMOVE:
6073 if len(instance.disks) == 1:
6074 raise errors.OpPrereqError("Cannot remove the last disk of"
6076 ins_l = self.rpc.call_instance_list([pnode], [instance.hypervisor])
6077 ins_l = ins_l[pnode]
6078 if ins_l.failed or not isinstance(ins_l.data, list):
6079 raise errors.OpPrereqError("Can't contact node '%s'" % pnode)
6080 if instance.name in ins_l.data:
6081 raise errors.OpPrereqError("Instance is running, can't remove"
6084 if (disk_op == constants.DDM_ADD and
6085 len(instance.nics) >= constants.MAX_DISKS):
6086 raise errors.OpPrereqError("Instance has too many disks (%d), cannot"
6087 " add more" % constants.MAX_DISKS)
6088 if disk_op not in (constants.DDM_ADD, constants.DDM_REMOVE):
6090 if disk_op < 0 or disk_op >= len(instance.disks):
6091 raise errors.OpPrereqError("Invalid disk index %s, valid values"
6093 (disk_op, len(instance.disks)))
6097 def Exec(self, feedback_fn):
6098 """Modifies an instance.
6100 All parameters take effect only at the next restart of the instance.
6103 # Process here the warnings from CheckPrereq, as we don't have a
6104 # feedback_fn there.
6105 for warn in self.warn:
6106 feedback_fn("WARNING: %s" % warn)
6109 instance = self.instance
6111 for disk_op, disk_dict in self.op.disks:
6112 if disk_op == constants.DDM_REMOVE:
6113 # remove the last disk
6114 device = instance.disks.pop()
6115 device_idx = len(instance.disks)
6116 for node, disk in device.ComputeNodeTree(instance.primary_node):
6117 self.cfg.SetDiskID(disk, node)
6118 msg = self.rpc.call_blockdev_remove(node, disk).RemoteFailMsg()
6120 self.LogWarning("Could not remove disk/%d on node %s: %s,"
6121 " continuing anyway", device_idx, node, msg)
6122 result.append(("disk/%d" % device_idx, "remove"))
6123 elif disk_op == constants.DDM_ADD:
6125 if instance.disk_template == constants.DT_FILE:
6126 file_driver, file_path = instance.disks[0].logical_id
6127 file_path = os.path.dirname(file_path)
6129 file_driver = file_path = None
6130 disk_idx_base = len(instance.disks)
6131 new_disk = _GenerateDiskTemplate(self,
6132 instance.disk_template,
6133 instance.name, instance.primary_node,
6134 instance.secondary_nodes,
6139 instance.disks.append(new_disk)
6140 info = _GetInstanceInfoText(instance)
6142 logging.info("Creating volume %s for instance %s",
6143 new_disk.iv_name, instance.name)
6144 # Note: this needs to be kept in sync with _CreateDisks
6146 for node in instance.all_nodes:
6147 f_create = node == instance.primary_node
6149 _CreateBlockDev(self, node, instance, new_disk,
6150 f_create, info, f_create)
6151 except errors.OpExecError, err:
6152 self.LogWarning("Failed to create volume %s (%s) on"
6154 new_disk.iv_name, new_disk, node, err)
6155 result.append(("disk/%d" % disk_idx_base, "add:size=%s,mode=%s" %
6156 (new_disk.size, new_disk.mode)))
6158 # change a given disk
6159 instance.disks[disk_op].mode = disk_dict['mode']
6160 result.append(("disk.mode/%d" % disk_op, disk_dict['mode']))
6162 for nic_op, nic_dict in self.op.nics:
6163 if nic_op == constants.DDM_REMOVE:
6164 # remove the last nic
6165 del instance.nics[-1]
6166 result.append(("nic.%d" % len(instance.nics), "remove"))
6167 elif nic_op == constants.DDM_ADD:
6168 # mac and bridge should be set, by now
6169 mac = nic_dict['mac']
6170 bridge = nic_dict['bridge']
6171 new_nic = objects.NIC(mac=mac, ip=nic_dict.get('ip', None),
6173 instance.nics.append(new_nic)
6174 result.append(("nic.%d" % (len(instance.nics) - 1),
6175 "add:mac=%s,ip=%s,bridge=%s" %
6176 (new_nic.mac, new_nic.ip, new_nic.bridge)))
6178 # change a given nic
6179 for key in 'mac', 'ip', 'bridge':
6181 setattr(instance.nics[nic_op], key, nic_dict[key])
6182 result.append(("nic.%s/%d" % (key, nic_op), nic_dict[key]))
6185 if self.op.hvparams:
6186 instance.hvparams = self.hv_inst
6187 for key, val in self.op.hvparams.iteritems():
6188 result.append(("hv/%s" % key, val))
6191 if self.op.beparams:
6192 instance.beparams = self.be_inst
6193 for key, val in self.op.beparams.iteritems():
6194 result.append(("be/%s" % key, val))
6196 self.cfg.Update(instance)
6201 class LUQueryExports(NoHooksLU):
6202 """Query the exports list
6205 _OP_REQP = ['nodes']
6208 def ExpandNames(self):
6209 self.needed_locks = {}
6210 self.share_locks[locking.LEVEL_NODE] = 1
6211 if not self.op.nodes:
6212 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
6214 self.needed_locks[locking.LEVEL_NODE] = \
6215 _GetWantedNodes(self, self.op.nodes)
6217 def CheckPrereq(self):
6218 """Check prerequisites.
6221 self.nodes = self.acquired_locks[locking.LEVEL_NODE]
6223 def Exec(self, feedback_fn):
6224 """Compute the list of all the exported system images.
6227 @return: a dictionary with the structure node->(export-list)
6228 where export-list is a list of the instances exported on
6232 rpcresult = self.rpc.call_export_list(self.nodes)
6234 for node in rpcresult:
6235 if rpcresult[node].failed:
6236 result[node] = False
6238 result[node] = rpcresult[node].data
6243 class LUExportInstance(LogicalUnit):
6244 """Export an instance to an image in the cluster.
6247 HPATH = "instance-export"
6248 HTYPE = constants.HTYPE_INSTANCE
6249 _OP_REQP = ["instance_name", "target_node", "shutdown"]
6252 def ExpandNames(self):
6253 self._ExpandAndLockInstance()
6254 # FIXME: lock only instance primary and destination node
6256 # Sad but true, for now we have do lock all nodes, as we don't know where
6257 # the previous export might be, and and in this LU we search for it and
6258 # remove it from its current node. In the future we could fix this by:
6259 # - making a tasklet to search (share-lock all), then create the new one,
6260 # then one to remove, after
6261 # - removing the removal operation altoghether
6262 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
6264 def DeclareLocks(self, level):
6265 """Last minute lock declaration."""
6266 # All nodes are locked anyway, so nothing to do here.
6268 def BuildHooksEnv(self):
6271 This will run on the master, primary node and target node.
6275 "EXPORT_NODE": self.op.target_node,
6276 "EXPORT_DO_SHUTDOWN": self.op.shutdown,
6278 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
6279 nl = [self.cfg.GetMasterNode(), self.instance.primary_node,
6280 self.op.target_node]
6283 def CheckPrereq(self):
6284 """Check prerequisites.
6286 This checks that the instance and node names are valid.
6289 instance_name = self.op.instance_name
6290 self.instance = self.cfg.GetInstanceInfo(instance_name)
6291 assert self.instance is not None, \
6292 "Cannot retrieve locked instance %s" % self.op.instance_name
6293 _CheckNodeOnline(self, self.instance.primary_node)
6295 self.dst_node = self.cfg.GetNodeInfo(
6296 self.cfg.ExpandNodeName(self.op.target_node))
6298 if self.dst_node is None:
6299 # This is wrong node name, not a non-locked node
6300 raise errors.OpPrereqError("Wrong node name %s" % self.op.target_node)
6301 _CheckNodeOnline(self, self.dst_node.name)
6302 _CheckNodeNotDrained(self, self.dst_node.name)
6304 # instance disk type verification
6305 for disk in self.instance.disks:
6306 if disk.dev_type == constants.LD_FILE:
6307 raise errors.OpPrereqError("Export not supported for instances with"
6308 " file-based disks")
6310 def Exec(self, feedback_fn):
6311 """Export an instance to an image in the cluster.
6314 instance = self.instance
6315 dst_node = self.dst_node
6316 src_node = instance.primary_node
6317 if self.op.shutdown:
6318 # shutdown the instance, but not the disks
6319 result = self.rpc.call_instance_shutdown(src_node, instance)
6320 msg = result.RemoteFailMsg()
6322 raise errors.OpExecError("Could not shutdown instance %s on"
6324 (instance.name, src_node, msg))
6326 vgname = self.cfg.GetVGName()
6330 # set the disks ID correctly since call_instance_start needs the
6331 # correct drbd minor to create the symlinks
6332 for disk in instance.disks:
6333 self.cfg.SetDiskID(disk, src_node)
6336 for disk in instance.disks:
6337 # new_dev_name will be a snapshot of an lvm leaf of the one we passed
6338 new_dev_name = self.rpc.call_blockdev_snapshot(src_node, disk)
6339 if new_dev_name.failed or not new_dev_name.data:
6340 self.LogWarning("Could not snapshot block device %s on node %s",
6341 disk.logical_id[1], src_node)
6342 snap_disks.append(False)
6344 new_dev = objects.Disk(dev_type=constants.LD_LV, size=disk.size,
6345 logical_id=(vgname, new_dev_name.data),
6346 physical_id=(vgname, new_dev_name.data),
6347 iv_name=disk.iv_name)
6348 snap_disks.append(new_dev)
6351 if self.op.shutdown and instance.admin_up:
6352 result = self.rpc.call_instance_start(src_node, instance, None, None)
6353 msg = result.RemoteFailMsg()
6355 _ShutdownInstanceDisks(self, instance)
6356 raise errors.OpExecError("Could not start instance: %s" % msg)
6358 # TODO: check for size
6360 cluster_name = self.cfg.GetClusterName()
6361 for idx, dev in enumerate(snap_disks):
6363 result = self.rpc.call_snapshot_export(src_node, dev, dst_node.name,
6364 instance, cluster_name, idx)
6365 if result.failed or not result.data:
6366 self.LogWarning("Could not export block device %s from node %s to"
6367 " node %s", dev.logical_id[1], src_node,
6369 msg = self.rpc.call_blockdev_remove(src_node, dev).RemoteFailMsg()
6371 self.LogWarning("Could not remove snapshot block device %s from node"
6372 " %s: %s", dev.logical_id[1], src_node, msg)
6374 result = self.rpc.call_finalize_export(dst_node.name, instance, snap_disks)
6375 if result.failed or not result.data:
6376 self.LogWarning("Could not finalize export for instance %s on node %s",
6377 instance.name, dst_node.name)
6379 nodelist = self.cfg.GetNodeList()
6380 nodelist.remove(dst_node.name)
6382 # on one-node clusters nodelist will be empty after the removal
6383 # if we proceed the backup would be removed because OpQueryExports
6384 # substitutes an empty list with the full cluster node list.
6386 exportlist = self.rpc.call_export_list(nodelist)
6387 for node in exportlist:
6388 if exportlist[node].failed:
6390 if instance.name in exportlist[node].data:
6391 if not self.rpc.call_export_remove(node, instance.name):
6392 self.LogWarning("Could not remove older export for instance %s"
6393 " on node %s", instance.name, node)
6396 class LURemoveExport(NoHooksLU):
6397 """Remove exports related to the named instance.
6400 _OP_REQP = ["instance_name"]
6403 def ExpandNames(self):
6404 self.needed_locks = {}
6405 # We need all nodes to be locked in order for RemoveExport to work, but we
6406 # don't need to lock the instance itself, as nothing will happen to it (and
6407 # we can remove exports also for a removed instance)
6408 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
6410 def CheckPrereq(self):
6411 """Check prerequisites.
6415 def Exec(self, feedback_fn):
6416 """Remove any export.
6419 instance_name = self.cfg.ExpandInstanceName(self.op.instance_name)
6420 # If the instance was not found we'll try with the name that was passed in.
6421 # This will only work if it was an FQDN, though.
6423 if not instance_name:
6425 instance_name = self.op.instance_name
6427 exportlist = self.rpc.call_export_list(self.acquired_locks[
6428 locking.LEVEL_NODE])
6430 for node in exportlist:
6431 if exportlist[node].failed:
6432 self.LogWarning("Failed to query node %s, continuing" % node)
6434 if instance_name in exportlist[node].data:
6436 result = self.rpc.call_export_remove(node, instance_name)
6437 if result.failed or not result.data:
6438 logging.error("Could not remove export for instance %s"
6439 " on node %s", instance_name, node)
6441 if fqdn_warn and not found:
6442 feedback_fn("Export not found. If trying to remove an export belonging"
6443 " to a deleted instance please use its Fully Qualified"
6447 class TagsLU(NoHooksLU):
6450 This is an abstract class which is the parent of all the other tags LUs.
6454 def ExpandNames(self):
6455 self.needed_locks = {}
6456 if self.op.kind == constants.TAG_NODE:
6457 name = self.cfg.ExpandNodeName(self.op.name)
6459 raise errors.OpPrereqError("Invalid node name (%s)" %
6462 self.needed_locks[locking.LEVEL_NODE] = name
6463 elif self.op.kind == constants.TAG_INSTANCE:
6464 name = self.cfg.ExpandInstanceName(self.op.name)
6466 raise errors.OpPrereqError("Invalid instance name (%s)" %
6469 self.needed_locks[locking.LEVEL_INSTANCE] = name
6471 def CheckPrereq(self):
6472 """Check prerequisites.
6475 if self.op.kind == constants.TAG_CLUSTER:
6476 self.target = self.cfg.GetClusterInfo()
6477 elif self.op.kind == constants.TAG_NODE:
6478 self.target = self.cfg.GetNodeInfo(self.op.name)
6479 elif self.op.kind == constants.TAG_INSTANCE:
6480 self.target = self.cfg.GetInstanceInfo(self.op.name)
6482 raise errors.OpPrereqError("Wrong tag type requested (%s)" %
6486 class LUGetTags(TagsLU):
6487 """Returns the tags of a given object.
6490 _OP_REQP = ["kind", "name"]
6493 def Exec(self, feedback_fn):
6494 """Returns the tag list.
6497 return list(self.target.GetTags())
6500 class LUSearchTags(NoHooksLU):
6501 """Searches the tags for a given pattern.
6504 _OP_REQP = ["pattern"]
6507 def ExpandNames(self):
6508 self.needed_locks = {}
6510 def CheckPrereq(self):
6511 """Check prerequisites.
6513 This checks the pattern passed for validity by compiling it.
6517 self.re = re.compile(self.op.pattern)
6518 except re.error, err:
6519 raise errors.OpPrereqError("Invalid search pattern '%s': %s" %
6520 (self.op.pattern, err))
6522 def Exec(self, feedback_fn):
6523 """Returns the tag list.
6527 tgts = [("/cluster", cfg.GetClusterInfo())]
6528 ilist = cfg.GetAllInstancesInfo().values()
6529 tgts.extend([("/instances/%s" % i.name, i) for i in ilist])
6530 nlist = cfg.GetAllNodesInfo().values()
6531 tgts.extend([("/nodes/%s" % n.name, n) for n in nlist])
6533 for path, target in tgts:
6534 for tag in target.GetTags():
6535 if self.re.search(tag):
6536 results.append((path, tag))
6540 class LUAddTags(TagsLU):
6541 """Sets a tag on a given object.
6544 _OP_REQP = ["kind", "name", "tags"]
6547 def CheckPrereq(self):
6548 """Check prerequisites.
6550 This checks the type and length of the tag name and value.
6553 TagsLU.CheckPrereq(self)
6554 for tag in self.op.tags:
6555 objects.TaggableObject.ValidateTag(tag)
6557 def Exec(self, feedback_fn):
6562 for tag in self.op.tags:
6563 self.target.AddTag(tag)
6564 except errors.TagError, err:
6565 raise errors.OpExecError("Error while setting tag: %s" % str(err))
6567 self.cfg.Update(self.target)
6568 except errors.ConfigurationError:
6569 raise errors.OpRetryError("There has been a modification to the"
6570 " config file and the operation has been"
6571 " aborted. Please retry.")
6574 class LUDelTags(TagsLU):
6575 """Delete a list of tags from a given object.
6578 _OP_REQP = ["kind", "name", "tags"]
6581 def CheckPrereq(self):
6582 """Check prerequisites.
6584 This checks that we have the given tag.
6587 TagsLU.CheckPrereq(self)
6588 for tag in self.op.tags:
6589 objects.TaggableObject.ValidateTag(tag)
6590 del_tags = frozenset(self.op.tags)
6591 cur_tags = self.target.GetTags()
6592 if not del_tags <= cur_tags:
6593 diff_tags = del_tags - cur_tags
6594 diff_names = ["'%s'" % tag for tag in diff_tags]
6596 raise errors.OpPrereqError("Tag(s) %s not found" %
6597 (",".join(diff_names)))
6599 def Exec(self, feedback_fn):
6600 """Remove the tag from the object.
6603 for tag in self.op.tags:
6604 self.target.RemoveTag(tag)
6606 self.cfg.Update(self.target)
6607 except errors.ConfigurationError:
6608 raise errors.OpRetryError("There has been a modification to the"
6609 " config file and the operation has been"
6610 " aborted. Please retry.")
6613 class LUTestDelay(NoHooksLU):
6614 """Sleep for a specified amount of time.
6616 This LU sleeps on the master and/or nodes for a specified amount of
6620 _OP_REQP = ["duration", "on_master", "on_nodes"]
6623 def ExpandNames(self):
6624 """Expand names and set required locks.
6626 This expands the node list, if any.
6629 self.needed_locks = {}
6630 if self.op.on_nodes:
6631 # _GetWantedNodes can be used here, but is not always appropriate to use
6632 # this way in ExpandNames. Check LogicalUnit.ExpandNames docstring for
6634 self.op.on_nodes = _GetWantedNodes(self, self.op.on_nodes)
6635 self.needed_locks[locking.LEVEL_NODE] = self.op.on_nodes
6637 def CheckPrereq(self):
6638 """Check prerequisites.
6642 def Exec(self, feedback_fn):
6643 """Do the actual sleep.
6646 if self.op.on_master:
6647 if not utils.TestDelay(self.op.duration):
6648 raise errors.OpExecError("Error during master delay test")
6649 if self.op.on_nodes:
6650 result = self.rpc.call_test_delay(self.op.on_nodes, self.op.duration)
6652 raise errors.OpExecError("Complete failure from rpc call")
6653 for node, node_result in result.items():
6655 if not node_result.data:
6656 raise errors.OpExecError("Failure during rpc call to node %s,"
6657 " result: %s" % (node, node_result.data))
6660 class IAllocator(object):
6661 """IAllocator framework.
6663 An IAllocator instance has three sets of attributes:
6664 - cfg that is needed to query the cluster
6665 - input data (all members of the _KEYS class attribute are required)
6666 - four buffer attributes (in|out_data|text), that represent the
6667 input (to the external script) in text and data structure format,
6668 and the output from it, again in two formats
6669 - the result variables from the script (success, info, nodes) for
6674 "mem_size", "disks", "disk_template",
6675 "os", "tags", "nics", "vcpus", "hypervisor",
6681 def __init__(self, lu, mode, name, **kwargs):
6683 # init buffer variables
6684 self.in_text = self.out_text = self.in_data = self.out_data = None
6685 # init all input fields so that pylint is happy
6688 self.mem_size = self.disks = self.disk_template = None
6689 self.os = self.tags = self.nics = self.vcpus = None
6690 self.hypervisor = None
6691 self.relocate_from = None
6693 self.required_nodes = None
6694 # init result fields
6695 self.success = self.info = self.nodes = None
6696 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
6697 keyset = self._ALLO_KEYS
6698 elif self.mode == constants.IALLOCATOR_MODE_RELOC:
6699 keyset = self._RELO_KEYS
6701 raise errors.ProgrammerError("Unknown mode '%s' passed to the"
6702 " IAllocator" % self.mode)
6704 if key not in keyset:
6705 raise errors.ProgrammerError("Invalid input parameter '%s' to"
6706 " IAllocator" % key)
6707 setattr(self, key, kwargs[key])
6709 if key not in kwargs:
6710 raise errors.ProgrammerError("Missing input parameter '%s' to"
6711 " IAllocator" % key)
6712 self._BuildInputData()
6714 def _ComputeClusterData(self):
6715 """Compute the generic allocator input data.
6717 This is the data that is independent of the actual operation.
6721 cluster_info = cfg.GetClusterInfo()
6724 "version": constants.IALLOCATOR_VERSION,
6725 "cluster_name": cfg.GetClusterName(),
6726 "cluster_tags": list(cluster_info.GetTags()),
6727 "enabled_hypervisors": list(cluster_info.enabled_hypervisors),
6728 # we don't have job IDs
6730 iinfo = cfg.GetAllInstancesInfo().values()
6731 i_list = [(inst, cluster_info.FillBE(inst)) for inst in iinfo]
6735 node_list = cfg.GetNodeList()
6737 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
6738 hypervisor_name = self.hypervisor
6739 elif self.mode == constants.IALLOCATOR_MODE_RELOC:
6740 hypervisor_name = cfg.GetInstanceInfo(self.name).hypervisor
6742 node_data = self.lu.rpc.call_node_info(node_list, cfg.GetVGName(),
6744 node_iinfo = self.lu.rpc.call_all_instances_info(node_list,
6745 cluster_info.enabled_hypervisors)
6746 for nname, nresult in node_data.items():
6747 # first fill in static (config-based) values
6748 ninfo = cfg.GetNodeInfo(nname)
6750 "tags": list(ninfo.GetTags()),
6751 "primary_ip": ninfo.primary_ip,
6752 "secondary_ip": ninfo.secondary_ip,
6753 "offline": ninfo.offline,
6754 "drained": ninfo.drained,
6755 "master_candidate": ninfo.master_candidate,
6758 if not ninfo.offline:
6760 if not isinstance(nresult.data, dict):
6761 raise errors.OpExecError("Can't get data for node %s" % nname)
6762 remote_info = nresult.data
6763 for attr in ['memory_total', 'memory_free', 'memory_dom0',
6764 'vg_size', 'vg_free', 'cpu_total']:
6765 if attr not in remote_info:
6766 raise errors.OpExecError("Node '%s' didn't return attribute"
6767 " '%s'" % (nname, attr))
6769 remote_info[attr] = int(remote_info[attr])
6770 except ValueError, err:
6771 raise errors.OpExecError("Node '%s' returned invalid value"
6772 " for '%s': %s" % (nname, attr, err))
6773 # compute memory used by primary instances
6774 i_p_mem = i_p_up_mem = 0
6775 for iinfo, beinfo in i_list:
6776 if iinfo.primary_node == nname:
6777 i_p_mem += beinfo[constants.BE_MEMORY]
6778 if iinfo.name not in node_iinfo[nname].data:
6781 i_used_mem = int(node_iinfo[nname].data[iinfo.name]['memory'])
6782 i_mem_diff = beinfo[constants.BE_MEMORY] - i_used_mem
6783 remote_info['memory_free'] -= max(0, i_mem_diff)
6786 i_p_up_mem += beinfo[constants.BE_MEMORY]
6788 # compute memory used by instances
6790 "total_memory": remote_info['memory_total'],
6791 "reserved_memory": remote_info['memory_dom0'],
6792 "free_memory": remote_info['memory_free'],
6793 "total_disk": remote_info['vg_size'],
6794 "free_disk": remote_info['vg_free'],
6795 "total_cpus": remote_info['cpu_total'],
6796 "i_pri_memory": i_p_mem,
6797 "i_pri_up_memory": i_p_up_mem,
6801 node_results[nname] = pnr
6802 data["nodes"] = node_results
6806 for iinfo, beinfo in i_list:
6807 nic_data = [{"mac": n.mac, "ip": n.ip, "bridge": n.bridge}
6808 for n in iinfo.nics]
6810 "tags": list(iinfo.GetTags()),
6811 "admin_up": iinfo.admin_up,
6812 "vcpus": beinfo[constants.BE_VCPUS],
6813 "memory": beinfo[constants.BE_MEMORY],
6815 "nodes": [iinfo.primary_node] + list(iinfo.secondary_nodes),
6817 "disks": [{"size": dsk.size, "mode": dsk.mode} for dsk in iinfo.disks],
6818 "disk_template": iinfo.disk_template,
6819 "hypervisor": iinfo.hypervisor,
6821 pir["disk_space_total"] = _ComputeDiskSize(iinfo.disk_template,
6823 instance_data[iinfo.name] = pir
6825 data["instances"] = instance_data
6829 def _AddNewInstance(self):
6830 """Add new instance data to allocator structure.
6832 This in combination with _AllocatorGetClusterData will create the
6833 correct structure needed as input for the allocator.
6835 The checks for the completeness of the opcode must have already been
6841 disk_space = _ComputeDiskSize(self.disk_template, self.disks)
6843 if self.disk_template in constants.DTS_NET_MIRROR:
6844 self.required_nodes = 2
6846 self.required_nodes = 1
6850 "disk_template": self.disk_template,
6853 "vcpus": self.vcpus,
6854 "memory": self.mem_size,
6855 "disks": self.disks,
6856 "disk_space_total": disk_space,
6858 "required_nodes": self.required_nodes,
6860 data["request"] = request
6862 def _AddRelocateInstance(self):
6863 """Add relocate instance data to allocator structure.
6865 This in combination with _IAllocatorGetClusterData will create the
6866 correct structure needed as input for the allocator.
6868 The checks for the completeness of the opcode must have already been
6872 instance = self.lu.cfg.GetInstanceInfo(self.name)
6873 if instance is None:
6874 raise errors.ProgrammerError("Unknown instance '%s' passed to"
6875 " IAllocator" % self.name)
6877 if instance.disk_template not in constants.DTS_NET_MIRROR:
6878 raise errors.OpPrereqError("Can't relocate non-mirrored instances")
6880 if len(instance.secondary_nodes) != 1:
6881 raise errors.OpPrereqError("Instance has not exactly one secondary node")
6883 self.required_nodes = 1
6884 disk_sizes = [{'size': disk.size} for disk in instance.disks]
6885 disk_space = _ComputeDiskSize(instance.disk_template, disk_sizes)
6890 "disk_space_total": disk_space,
6891 "required_nodes": self.required_nodes,
6892 "relocate_from": self.relocate_from,
6894 self.in_data["request"] = request
6896 def _BuildInputData(self):
6897 """Build input data structures.
6900 self._ComputeClusterData()
6902 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
6903 self._AddNewInstance()
6905 self._AddRelocateInstance()
6907 self.in_text = serializer.Dump(self.in_data)
6909 def Run(self, name, validate=True, call_fn=None):
6910 """Run an instance allocator and return the results.
6914 call_fn = self.lu.rpc.call_iallocator_runner
6917 result = call_fn(self.lu.cfg.GetMasterNode(), name, self.in_text)
6920 if not isinstance(result.data, (list, tuple)) or len(result.data) != 4:
6921 raise errors.OpExecError("Invalid result from master iallocator runner")
6923 rcode, stdout, stderr, fail = result.data
6925 if rcode == constants.IARUN_NOTFOUND:
6926 raise errors.OpExecError("Can't find allocator '%s'" % name)
6927 elif rcode == constants.IARUN_FAILURE:
6928 raise errors.OpExecError("Instance allocator call failed: %s,"
6929 " output: %s" % (fail, stdout+stderr))
6930 self.out_text = stdout
6932 self._ValidateResult()
6934 def _ValidateResult(self):
6935 """Process the allocator results.
6937 This will process and if successful save the result in
6938 self.out_data and the other parameters.
6942 rdict = serializer.Load(self.out_text)
6943 except Exception, err:
6944 raise errors.OpExecError("Can't parse iallocator results: %s" % str(err))
6946 if not isinstance(rdict, dict):
6947 raise errors.OpExecError("Can't parse iallocator results: not a dict")
6949 for key in "success", "info", "nodes":
6950 if key not in rdict:
6951 raise errors.OpExecError("Can't parse iallocator results:"
6952 " missing key '%s'" % key)
6953 setattr(self, key, rdict[key])
6955 if not isinstance(rdict["nodes"], list):
6956 raise errors.OpExecError("Can't parse iallocator results: 'nodes' key"
6958 self.out_data = rdict
6961 class LUTestAllocator(NoHooksLU):
6962 """Run allocator tests.
6964 This LU runs the allocator tests
6967 _OP_REQP = ["direction", "mode", "name"]
6969 def CheckPrereq(self):
6970 """Check prerequisites.
6972 This checks the opcode parameters depending on the director and mode test.
6975 if self.op.mode == constants.IALLOCATOR_MODE_ALLOC:
6976 for attr in ["name", "mem_size", "disks", "disk_template",
6977 "os", "tags", "nics", "vcpus"]:
6978 if not hasattr(self.op, attr):
6979 raise errors.OpPrereqError("Missing attribute '%s' on opcode input" %
6981 iname = self.cfg.ExpandInstanceName(self.op.name)
6982 if iname is not None:
6983 raise errors.OpPrereqError("Instance '%s' already in the cluster" %
6985 if not isinstance(self.op.nics, list):
6986 raise errors.OpPrereqError("Invalid parameter 'nics'")
6987 for row in self.op.nics:
6988 if (not isinstance(row, dict) or
6991 "bridge" not in row):
6992 raise errors.OpPrereqError("Invalid contents of the"
6993 " 'nics' parameter")
6994 if not isinstance(self.op.disks, list):
6995 raise errors.OpPrereqError("Invalid parameter 'disks'")
6996 for row in self.op.disks:
6997 if (not isinstance(row, dict) or
6998 "size" not in row or
6999 not isinstance(row["size"], int) or
7000 "mode" not in row or
7001 row["mode"] not in ['r', 'w']):
7002 raise errors.OpPrereqError("Invalid contents of the"
7003 " 'disks' parameter")
7004 if not hasattr(self.op, "hypervisor") or self.op.hypervisor is None:
7005 self.op.hypervisor = self.cfg.GetHypervisorType()
7006 elif self.op.mode == constants.IALLOCATOR_MODE_RELOC:
7007 if not hasattr(self.op, "name"):
7008 raise errors.OpPrereqError("Missing attribute 'name' on opcode input")
7009 fname = self.cfg.ExpandInstanceName(self.op.name)
7011 raise errors.OpPrereqError("Instance '%s' not found for relocation" %
7013 self.op.name = fname
7014 self.relocate_from = self.cfg.GetInstanceInfo(fname).secondary_nodes
7016 raise errors.OpPrereqError("Invalid test allocator mode '%s'" %
7019 if self.op.direction == constants.IALLOCATOR_DIR_OUT:
7020 if not hasattr(self.op, "allocator") or self.op.allocator is None:
7021 raise errors.OpPrereqError("Missing allocator name")
7022 elif self.op.direction != constants.IALLOCATOR_DIR_IN:
7023 raise errors.OpPrereqError("Wrong allocator test '%s'" %
7026 def Exec(self, feedback_fn):
7027 """Run the allocator test.
7030 if self.op.mode == constants.IALLOCATOR_MODE_ALLOC:
7031 ial = IAllocator(self,
7034 mem_size=self.op.mem_size,
7035 disks=self.op.disks,
7036 disk_template=self.op.disk_template,
7040 vcpus=self.op.vcpus,
7041 hypervisor=self.op.hypervisor,
7044 ial = IAllocator(self,
7047 relocate_from=list(self.relocate_from),
7050 if self.op.direction == constants.IALLOCATOR_DIR_IN:
7051 result = ial.in_text
7053 ial.Run(self.op.allocator, validate=False)
7054 result = ial.out_text