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 params changes
1490 if self.op.beparams:
1491 utils.ForceDictType(self.op.beparams, constants.BES_PARAMETER_TYPES)
1492 self.new_beparams = objects.FillDict(
1493 cluster.beparams[constants.PP_DEFAULT], self.op.beparams)
1495 if self.op.nicparams:
1496 utils.ForceDictType(self.op.nicparams, constants.NICS_PARAMETER_TYPES)
1497 self.new_nicparams = objects.FillDict(
1498 cluster.nicparams[constants.PP_DEFAULT], self.op.nicparams)
1499 objects.NIC.CheckParameterSyntax(self.new_nicparams)
1501 # hypervisor list/parameters
1502 self.new_hvparams = objects.FillDict(cluster.hvparams, {})
1503 if self.op.hvparams:
1504 if not isinstance(self.op.hvparams, dict):
1505 raise errors.OpPrereqError("Invalid 'hvparams' parameter on input")
1506 for hv_name, hv_dict in self.op.hvparams.items():
1507 if hv_name not in self.new_hvparams:
1508 self.new_hvparams[hv_name] = hv_dict
1510 self.new_hvparams[hv_name].update(hv_dict)
1512 if self.op.enabled_hypervisors is not None:
1513 self.hv_list = self.op.enabled_hypervisors
1515 self.hv_list = cluster.enabled_hypervisors
1517 if self.op.hvparams or self.op.enabled_hypervisors is not None:
1518 # either the enabled list has changed, or the parameters have, validate
1519 for hv_name, hv_params in self.new_hvparams.items():
1520 if ((self.op.hvparams and hv_name in self.op.hvparams) or
1521 (self.op.enabled_hypervisors and
1522 hv_name in self.op.enabled_hypervisors)):
1523 # either this is a new hypervisor, or its parameters have changed
1524 hv_class = hypervisor.GetHypervisor(hv_name)
1525 utils.ForceDictType(hv_params, constants.HVS_PARAMETER_TYPES)
1526 hv_class.CheckParameterSyntax(hv_params)
1527 _CheckHVParams(self, node_list, hv_name, hv_params)
1529 def Exec(self, feedback_fn):
1530 """Change the parameters of the cluster.
1533 if self.op.vg_name is not None:
1534 new_volume = self.op.vg_name
1537 if new_volume != self.cfg.GetVGName():
1538 self.cfg.SetVGName(new_volume)
1540 feedback_fn("Cluster LVM configuration already in desired"
1541 " state, not changing")
1542 if self.op.hvparams:
1543 self.cluster.hvparams = self.new_hvparams
1544 if self.op.enabled_hypervisors is not None:
1545 self.cluster.enabled_hypervisors = self.op.enabled_hypervisors
1546 if self.op.beparams:
1547 self.cluster.beparams[constants.PP_DEFAULT] = self.new_beparams
1548 if self.op.nicparams:
1549 self.cluster.nicparams[constants.PP_DEFAULT] = self.new_nicparams
1551 if self.op.candidate_pool_size is not None:
1552 self.cluster.candidate_pool_size = self.op.candidate_pool_size
1554 self.cfg.Update(self.cluster)
1556 # we want to update nodes after the cluster so that if any errors
1557 # happen, we have recorded and saved the cluster info
1558 if self.op.candidate_pool_size is not None:
1559 _AdjustCandidatePool(self)
1562 def _RedistributeAncillaryFiles(lu, additional_nodes=None):
1563 """Distribute additional files which are part of the cluster configuration.
1565 ConfigWriter takes care of distributing the config and ssconf files, but
1566 there are more files which should be distributed to all nodes. This function
1567 makes sure those are copied.
1569 @param lu: calling logical unit
1570 @param additional_nodes: list of nodes not in the config to distribute to
1573 # 1. Gather target nodes
1574 myself = lu.cfg.GetNodeInfo(lu.cfg.GetMasterNode())
1575 dist_nodes = lu.cfg.GetNodeList()
1576 if additional_nodes is not None:
1577 dist_nodes.extend(additional_nodes)
1578 if myself.name in dist_nodes:
1579 dist_nodes.remove(myself.name)
1580 # 2. Gather files to distribute
1581 dist_files = set([constants.ETC_HOSTS,
1582 constants.SSH_KNOWN_HOSTS_FILE,
1583 constants.RAPI_CERT_FILE,
1584 constants.RAPI_USERS_FILE,
1587 enabled_hypervisors = lu.cfg.GetClusterInfo().enabled_hypervisors
1588 for hv_name in enabled_hypervisors:
1589 hv_class = hypervisor.GetHypervisor(hv_name)
1590 dist_files.update(hv_class.GetAncillaryFiles())
1592 # 3. Perform the files upload
1593 for fname in dist_files:
1594 if os.path.exists(fname):
1595 result = lu.rpc.call_upload_file(dist_nodes, fname)
1596 for to_node, to_result in result.items():
1597 msg = to_result.RemoteFailMsg()
1599 msg = ("Copy of file %s to node %s failed: %s" %
1600 (fname, to_node, msg))
1601 lu.proc.LogWarning(msg)
1604 class LURedistributeConfig(NoHooksLU):
1605 """Force the redistribution of cluster configuration.
1607 This is a very simple LU.
1613 def ExpandNames(self):
1614 self.needed_locks = {
1615 locking.LEVEL_NODE: locking.ALL_SET,
1617 self.share_locks[locking.LEVEL_NODE] = 1
1619 def CheckPrereq(self):
1620 """Check prerequisites.
1624 def Exec(self, feedback_fn):
1625 """Redistribute the configuration.
1628 self.cfg.Update(self.cfg.GetClusterInfo())
1629 _RedistributeAncillaryFiles(self)
1632 def _WaitForSync(lu, instance, oneshot=False, unlock=False):
1633 """Sleep and poll for an instance's disk to sync.
1636 if not instance.disks:
1640 lu.proc.LogInfo("Waiting for instance %s to sync disks." % instance.name)
1642 node = instance.primary_node
1644 for dev in instance.disks:
1645 lu.cfg.SetDiskID(dev, node)
1651 cumul_degraded = False
1652 rstats = lu.rpc.call_blockdev_getmirrorstatus(node, instance.disks)
1653 if rstats.failed or not rstats.data:
1654 lu.LogWarning("Can't get any data from node %s", node)
1657 raise errors.RemoteError("Can't contact node %s for mirror data,"
1658 " aborting." % node)
1661 rstats = rstats.data
1663 for i, mstat in enumerate(rstats):
1665 lu.LogWarning("Can't compute data for node %s/%s",
1666 node, instance.disks[i].iv_name)
1668 # we ignore the ldisk parameter
1669 perc_done, est_time, is_degraded, _ = mstat
1670 cumul_degraded = cumul_degraded or (is_degraded and perc_done is None)
1671 if perc_done is not None:
1673 if est_time is not None:
1674 rem_time = "%d estimated seconds remaining" % est_time
1677 rem_time = "no time estimate"
1678 lu.proc.LogInfo("- device %s: %5.2f%% done, %s" %
1679 (instance.disks[i].iv_name, perc_done, rem_time))
1683 time.sleep(min(60, max_time))
1686 lu.proc.LogInfo("Instance %s's disks are in sync." % instance.name)
1687 return not cumul_degraded
1690 def _CheckDiskConsistency(lu, dev, node, on_primary, ldisk=False):
1691 """Check that mirrors are not degraded.
1693 The ldisk parameter, if True, will change the test from the
1694 is_degraded attribute (which represents overall non-ok status for
1695 the device(s)) to the ldisk (representing the local storage status).
1698 lu.cfg.SetDiskID(dev, node)
1705 if on_primary or dev.AssembleOnSecondary():
1706 rstats = lu.rpc.call_blockdev_find(node, dev)
1707 msg = rstats.RemoteFailMsg()
1709 lu.LogWarning("Can't find disk on node %s: %s", node, msg)
1711 elif not rstats.payload:
1712 lu.LogWarning("Can't find disk on node %s", node)
1715 result = result and (not rstats.payload[idx])
1717 for child in dev.children:
1718 result = result and _CheckDiskConsistency(lu, child, node, on_primary)
1723 class LUDiagnoseOS(NoHooksLU):
1724 """Logical unit for OS diagnose/query.
1727 _OP_REQP = ["output_fields", "names"]
1729 _FIELDS_STATIC = utils.FieldSet()
1730 _FIELDS_DYNAMIC = utils.FieldSet("name", "valid", "node_status")
1732 def ExpandNames(self):
1734 raise errors.OpPrereqError("Selective OS query not supported")
1736 _CheckOutputFields(static=self._FIELDS_STATIC,
1737 dynamic=self._FIELDS_DYNAMIC,
1738 selected=self.op.output_fields)
1740 # Lock all nodes, in shared mode
1741 # Temporary removal of locks, should be reverted later
1742 # TODO: reintroduce locks when they are lighter-weight
1743 self.needed_locks = {}
1744 #self.share_locks[locking.LEVEL_NODE] = 1
1745 #self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
1747 def CheckPrereq(self):
1748 """Check prerequisites.
1753 def _DiagnoseByOS(node_list, rlist):
1754 """Remaps a per-node return list into an a per-os per-node dictionary
1756 @param node_list: a list with the names of all nodes
1757 @param rlist: a map with node names as keys and OS objects as values
1760 @return: a dictionary with osnames as keys and as value another map, with
1761 nodes as keys and list of OS objects as values, eg::
1763 {"debian-etch": {"node1": [<object>,...],
1764 "node2": [<object>,]}
1769 # we build here the list of nodes that didn't fail the RPC (at RPC
1770 # level), so that nodes with a non-responding node daemon don't
1771 # make all OSes invalid
1772 good_nodes = [node_name for node_name in rlist
1773 if not rlist[node_name].failed]
1774 for node_name, nr in rlist.iteritems():
1775 if nr.failed or not nr.data:
1777 for os_obj in nr.data:
1778 if os_obj.name not in all_os:
1779 # build a list of nodes for this os containing empty lists
1780 # for each node in node_list
1781 all_os[os_obj.name] = {}
1782 for nname in good_nodes:
1783 all_os[os_obj.name][nname] = []
1784 all_os[os_obj.name][node_name].append(os_obj)
1787 def Exec(self, feedback_fn):
1788 """Compute the list of OSes.
1791 valid_nodes = [node for node in self.cfg.GetOnlineNodeList()]
1792 node_data = self.rpc.call_os_diagnose(valid_nodes)
1793 if node_data == False:
1794 raise errors.OpExecError("Can't gather the list of OSes")
1795 pol = self._DiagnoseByOS(valid_nodes, node_data)
1797 for os_name, os_data in pol.iteritems():
1799 for field in self.op.output_fields:
1802 elif field == "valid":
1803 val = utils.all([osl and osl[0] for osl in os_data.values()])
1804 elif field == "node_status":
1806 for node_name, nos_list in os_data.iteritems():
1807 val[node_name] = [(v.status, v.path) for v in nos_list]
1809 raise errors.ParameterError(field)
1816 class LURemoveNode(LogicalUnit):
1817 """Logical unit for removing a node.
1820 HPATH = "node-remove"
1821 HTYPE = constants.HTYPE_NODE
1822 _OP_REQP = ["node_name"]
1824 def BuildHooksEnv(self):
1827 This doesn't run on the target node in the pre phase as a failed
1828 node would then be impossible to remove.
1832 "OP_TARGET": self.op.node_name,
1833 "NODE_NAME": self.op.node_name,
1835 all_nodes = self.cfg.GetNodeList()
1836 all_nodes.remove(self.op.node_name)
1837 return env, all_nodes, all_nodes
1839 def CheckPrereq(self):
1840 """Check prerequisites.
1843 - the node exists in the configuration
1844 - it does not have primary or secondary instances
1845 - it's not the master
1847 Any errors are signalled by raising errors.OpPrereqError.
1850 node = self.cfg.GetNodeInfo(self.cfg.ExpandNodeName(self.op.node_name))
1852 raise errors.OpPrereqError, ("Node '%s' is unknown." % self.op.node_name)
1854 instance_list = self.cfg.GetInstanceList()
1856 masternode = self.cfg.GetMasterNode()
1857 if node.name == masternode:
1858 raise errors.OpPrereqError("Node is the master node,"
1859 " you need to failover first.")
1861 for instance_name in instance_list:
1862 instance = self.cfg.GetInstanceInfo(instance_name)
1863 if node.name in instance.all_nodes:
1864 raise errors.OpPrereqError("Instance %s is still running on the node,"
1865 " please remove first." % instance_name)
1866 self.op.node_name = node.name
1869 def Exec(self, feedback_fn):
1870 """Removes the node from the cluster.
1874 logging.info("Stopping the node daemon and removing configs from node %s",
1877 self.context.RemoveNode(node.name)
1879 self.rpc.call_node_leave_cluster(node.name)
1881 # Promote nodes to master candidate as needed
1882 _AdjustCandidatePool(self)
1885 class LUQueryNodes(NoHooksLU):
1886 """Logical unit for querying nodes.
1889 _OP_REQP = ["output_fields", "names", "use_locking"]
1891 _FIELDS_DYNAMIC = utils.FieldSet(
1893 "mtotal", "mnode", "mfree",
1895 "ctotal", "cnodes", "csockets",
1898 _FIELDS_STATIC = utils.FieldSet(
1899 "name", "pinst_cnt", "sinst_cnt",
1900 "pinst_list", "sinst_list",
1901 "pip", "sip", "tags",
1909 def ExpandNames(self):
1910 _CheckOutputFields(static=self._FIELDS_STATIC,
1911 dynamic=self._FIELDS_DYNAMIC,
1912 selected=self.op.output_fields)
1914 self.needed_locks = {}
1915 self.share_locks[locking.LEVEL_NODE] = 1
1918 self.wanted = _GetWantedNodes(self, self.op.names)
1920 self.wanted = locking.ALL_SET
1922 self.do_node_query = self._FIELDS_STATIC.NonMatching(self.op.output_fields)
1923 self.do_locking = self.do_node_query and self.op.use_locking
1925 # if we don't request only static fields, we need to lock the nodes
1926 self.needed_locks[locking.LEVEL_NODE] = self.wanted
1929 def CheckPrereq(self):
1930 """Check prerequisites.
1933 # The validation of the node list is done in the _GetWantedNodes,
1934 # if non empty, and if empty, there's no validation to do
1937 def Exec(self, feedback_fn):
1938 """Computes the list of nodes and their attributes.
1941 all_info = self.cfg.GetAllNodesInfo()
1943 nodenames = self.acquired_locks[locking.LEVEL_NODE]
1944 elif self.wanted != locking.ALL_SET:
1945 nodenames = self.wanted
1946 missing = set(nodenames).difference(all_info.keys())
1948 raise errors.OpExecError(
1949 "Some nodes were removed before retrieving their data: %s" % missing)
1951 nodenames = all_info.keys()
1953 nodenames = utils.NiceSort(nodenames)
1954 nodelist = [all_info[name] for name in nodenames]
1956 # begin data gathering
1958 if self.do_node_query:
1960 node_data = self.rpc.call_node_info(nodenames, self.cfg.GetVGName(),
1961 self.cfg.GetHypervisorType())
1962 for name in nodenames:
1963 nodeinfo = node_data[name]
1964 if not nodeinfo.failed and nodeinfo.data:
1965 nodeinfo = nodeinfo.data
1966 fn = utils.TryConvert
1968 "mtotal": fn(int, nodeinfo.get('memory_total', None)),
1969 "mnode": fn(int, nodeinfo.get('memory_dom0', None)),
1970 "mfree": fn(int, nodeinfo.get('memory_free', None)),
1971 "dtotal": fn(int, nodeinfo.get('vg_size', None)),
1972 "dfree": fn(int, nodeinfo.get('vg_free', None)),
1973 "ctotal": fn(int, nodeinfo.get('cpu_total', None)),
1974 "bootid": nodeinfo.get('bootid', None),
1975 "cnodes": fn(int, nodeinfo.get('cpu_nodes', None)),
1976 "csockets": fn(int, nodeinfo.get('cpu_sockets', None)),
1979 live_data[name] = {}
1981 live_data = dict.fromkeys(nodenames, {})
1983 node_to_primary = dict([(name, set()) for name in nodenames])
1984 node_to_secondary = dict([(name, set()) for name in nodenames])
1986 inst_fields = frozenset(("pinst_cnt", "pinst_list",
1987 "sinst_cnt", "sinst_list"))
1988 if inst_fields & frozenset(self.op.output_fields):
1989 instancelist = self.cfg.GetInstanceList()
1991 for instance_name in instancelist:
1992 inst = self.cfg.GetInstanceInfo(instance_name)
1993 if inst.primary_node in node_to_primary:
1994 node_to_primary[inst.primary_node].add(inst.name)
1995 for secnode in inst.secondary_nodes:
1996 if secnode in node_to_secondary:
1997 node_to_secondary[secnode].add(inst.name)
1999 master_node = self.cfg.GetMasterNode()
2001 # end data gathering
2004 for node in nodelist:
2006 for field in self.op.output_fields:
2009 elif field == "pinst_list":
2010 val = list(node_to_primary[node.name])
2011 elif field == "sinst_list":
2012 val = list(node_to_secondary[node.name])
2013 elif field == "pinst_cnt":
2014 val = len(node_to_primary[node.name])
2015 elif field == "sinst_cnt":
2016 val = len(node_to_secondary[node.name])
2017 elif field == "pip":
2018 val = node.primary_ip
2019 elif field == "sip":
2020 val = node.secondary_ip
2021 elif field == "tags":
2022 val = list(node.GetTags())
2023 elif field == "serial_no":
2024 val = node.serial_no
2025 elif field == "master_candidate":
2026 val = node.master_candidate
2027 elif field == "master":
2028 val = node.name == master_node
2029 elif field == "offline":
2031 elif field == "drained":
2033 elif self._FIELDS_DYNAMIC.Matches(field):
2034 val = live_data[node.name].get(field, None)
2036 raise errors.ParameterError(field)
2037 node_output.append(val)
2038 output.append(node_output)
2043 class LUQueryNodeVolumes(NoHooksLU):
2044 """Logical unit for getting volumes on node(s).
2047 _OP_REQP = ["nodes", "output_fields"]
2049 _FIELDS_DYNAMIC = utils.FieldSet("phys", "vg", "name", "size", "instance")
2050 _FIELDS_STATIC = utils.FieldSet("node")
2052 def ExpandNames(self):
2053 _CheckOutputFields(static=self._FIELDS_STATIC,
2054 dynamic=self._FIELDS_DYNAMIC,
2055 selected=self.op.output_fields)
2057 self.needed_locks = {}
2058 self.share_locks[locking.LEVEL_NODE] = 1
2059 if not self.op.nodes:
2060 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
2062 self.needed_locks[locking.LEVEL_NODE] = \
2063 _GetWantedNodes(self, self.op.nodes)
2065 def CheckPrereq(self):
2066 """Check prerequisites.
2068 This checks that the fields required are valid output fields.
2071 self.nodes = self.acquired_locks[locking.LEVEL_NODE]
2073 def Exec(self, feedback_fn):
2074 """Computes the list of nodes and their attributes.
2077 nodenames = self.nodes
2078 volumes = self.rpc.call_node_volumes(nodenames)
2080 ilist = [self.cfg.GetInstanceInfo(iname) for iname
2081 in self.cfg.GetInstanceList()]
2083 lv_by_node = dict([(inst, inst.MapLVsByNode()) for inst in ilist])
2086 for node in nodenames:
2087 if node not in volumes or volumes[node].failed or not volumes[node].data:
2090 node_vols = volumes[node].data[:]
2091 node_vols.sort(key=lambda vol: vol['dev'])
2093 for vol in node_vols:
2095 for field in self.op.output_fields:
2098 elif field == "phys":
2102 elif field == "name":
2104 elif field == "size":
2105 val = int(float(vol['size']))
2106 elif field == "instance":
2108 if node not in lv_by_node[inst]:
2110 if vol['name'] in lv_by_node[inst][node]:
2116 raise errors.ParameterError(field)
2117 node_output.append(str(val))
2119 output.append(node_output)
2124 class LUAddNode(LogicalUnit):
2125 """Logical unit for adding node to the cluster.
2129 HTYPE = constants.HTYPE_NODE
2130 _OP_REQP = ["node_name"]
2132 def BuildHooksEnv(self):
2135 This will run on all nodes before, and on all nodes + the new node after.
2139 "OP_TARGET": self.op.node_name,
2140 "NODE_NAME": self.op.node_name,
2141 "NODE_PIP": self.op.primary_ip,
2142 "NODE_SIP": self.op.secondary_ip,
2144 nodes_0 = self.cfg.GetNodeList()
2145 nodes_1 = nodes_0 + [self.op.node_name, ]
2146 return env, nodes_0, nodes_1
2148 def CheckPrereq(self):
2149 """Check prerequisites.
2152 - the new node is not already in the config
2154 - its parameters (single/dual homed) matches the cluster
2156 Any errors are signalled by raising errors.OpPrereqError.
2159 node_name = self.op.node_name
2162 dns_data = utils.HostInfo(node_name)
2164 node = dns_data.name
2165 primary_ip = self.op.primary_ip = dns_data.ip
2166 secondary_ip = getattr(self.op, "secondary_ip", None)
2167 if secondary_ip is None:
2168 secondary_ip = primary_ip
2169 if not utils.IsValidIP(secondary_ip):
2170 raise errors.OpPrereqError("Invalid secondary IP given")
2171 self.op.secondary_ip = secondary_ip
2173 node_list = cfg.GetNodeList()
2174 if not self.op.readd and node in node_list:
2175 raise errors.OpPrereqError("Node %s is already in the configuration" %
2177 elif self.op.readd and node not in node_list:
2178 raise errors.OpPrereqError("Node %s is not in the configuration" % node)
2180 for existing_node_name in node_list:
2181 existing_node = cfg.GetNodeInfo(existing_node_name)
2183 if self.op.readd and node == existing_node_name:
2184 if (existing_node.primary_ip != primary_ip or
2185 existing_node.secondary_ip != secondary_ip):
2186 raise errors.OpPrereqError("Readded node doesn't have the same IP"
2187 " address configuration as before")
2190 if (existing_node.primary_ip == primary_ip or
2191 existing_node.secondary_ip == primary_ip or
2192 existing_node.primary_ip == secondary_ip or
2193 existing_node.secondary_ip == secondary_ip):
2194 raise errors.OpPrereqError("New node ip address(es) conflict with"
2195 " existing node %s" % existing_node.name)
2197 # check that the type of the node (single versus dual homed) is the
2198 # same as for the master
2199 myself = cfg.GetNodeInfo(self.cfg.GetMasterNode())
2200 master_singlehomed = myself.secondary_ip == myself.primary_ip
2201 newbie_singlehomed = secondary_ip == primary_ip
2202 if master_singlehomed != newbie_singlehomed:
2203 if master_singlehomed:
2204 raise errors.OpPrereqError("The master has no private ip but the"
2205 " new node has one")
2207 raise errors.OpPrereqError("The master has a private ip but the"
2208 " new node doesn't have one")
2210 # checks reachablity
2211 if not utils.TcpPing(primary_ip, constants.DEFAULT_NODED_PORT):
2212 raise errors.OpPrereqError("Node not reachable by ping")
2214 if not newbie_singlehomed:
2215 # check reachability from my secondary ip to newbie's secondary ip
2216 if not utils.TcpPing(secondary_ip, constants.DEFAULT_NODED_PORT,
2217 source=myself.secondary_ip):
2218 raise errors.OpPrereqError("Node secondary ip not reachable by TCP"
2219 " based ping to noded port")
2221 cp_size = self.cfg.GetClusterInfo().candidate_pool_size
2222 mc_now, _ = self.cfg.GetMasterCandidateStats()
2223 master_candidate = mc_now < cp_size
2225 self.new_node = objects.Node(name=node,
2226 primary_ip=primary_ip,
2227 secondary_ip=secondary_ip,
2228 master_candidate=master_candidate,
2229 offline=False, drained=False)
2231 def Exec(self, feedback_fn):
2232 """Adds the new node to the cluster.
2235 new_node = self.new_node
2236 node = new_node.name
2238 # check connectivity
2239 result = self.rpc.call_version([node])[node]
2242 if constants.PROTOCOL_VERSION == result.data:
2243 logging.info("Communication to node %s fine, sw version %s match",
2246 raise errors.OpExecError("Version mismatch master version %s,"
2247 " node version %s" %
2248 (constants.PROTOCOL_VERSION, result.data))
2250 raise errors.OpExecError("Cannot get version from the new node")
2253 logging.info("Copy ssh key to node %s", node)
2254 priv_key, pub_key, _ = ssh.GetUserFiles(constants.GANETI_RUNAS)
2256 keyfiles = [constants.SSH_HOST_DSA_PRIV, constants.SSH_HOST_DSA_PUB,
2257 constants.SSH_HOST_RSA_PRIV, constants.SSH_HOST_RSA_PUB,
2263 keyarray.append(f.read())
2267 result = self.rpc.call_node_add(node, keyarray[0], keyarray[1],
2269 keyarray[3], keyarray[4], keyarray[5])
2271 msg = result.RemoteFailMsg()
2273 raise errors.OpExecError("Cannot transfer ssh keys to the"
2274 " new node: %s" % msg)
2276 # Add node to our /etc/hosts, and add key to known_hosts
2277 if self.cfg.GetClusterInfo().modify_etc_hosts:
2278 utils.AddHostToEtcHosts(new_node.name)
2280 if new_node.secondary_ip != new_node.primary_ip:
2281 result = self.rpc.call_node_has_ip_address(new_node.name,
2282 new_node.secondary_ip)
2283 if result.failed or not result.data:
2284 raise errors.OpExecError("Node claims it doesn't have the secondary ip"
2285 " you gave (%s). Please fix and re-run this"
2286 " command." % new_node.secondary_ip)
2288 node_verify_list = [self.cfg.GetMasterNode()]
2289 node_verify_param = {
2291 # TODO: do a node-net-test as well?
2294 result = self.rpc.call_node_verify(node_verify_list, node_verify_param,
2295 self.cfg.GetClusterName())
2296 for verifier in node_verify_list:
2297 if result[verifier].failed or not result[verifier].data:
2298 raise errors.OpExecError("Cannot communicate with %s's node daemon"
2299 " for remote verification" % verifier)
2300 if result[verifier].data['nodelist']:
2301 for failed in result[verifier].data['nodelist']:
2302 feedback_fn("ssh/hostname verification failed %s -> %s" %
2303 (verifier, result[verifier].data['nodelist'][failed]))
2304 raise errors.OpExecError("ssh/hostname verification failed.")
2307 _RedistributeAncillaryFiles(self)
2308 self.context.ReaddNode(new_node)
2310 _RedistributeAncillaryFiles(self, additional_nodes=node)
2311 self.context.AddNode(new_node)
2314 class LUSetNodeParams(LogicalUnit):
2315 """Modifies the parameters of a node.
2318 HPATH = "node-modify"
2319 HTYPE = constants.HTYPE_NODE
2320 _OP_REQP = ["node_name"]
2323 def CheckArguments(self):
2324 node_name = self.cfg.ExpandNodeName(self.op.node_name)
2325 if node_name is None:
2326 raise errors.OpPrereqError("Invalid node name '%s'" % self.op.node_name)
2327 self.op.node_name = node_name
2328 _CheckBooleanOpField(self.op, 'master_candidate')
2329 _CheckBooleanOpField(self.op, 'offline')
2330 _CheckBooleanOpField(self.op, 'drained')
2331 all_mods = [self.op.offline, self.op.master_candidate, self.op.drained]
2332 if all_mods.count(None) == 3:
2333 raise errors.OpPrereqError("Please pass at least one modification")
2334 if all_mods.count(True) > 1:
2335 raise errors.OpPrereqError("Can't set the node into more than one"
2336 " state at the same time")
2338 def ExpandNames(self):
2339 self.needed_locks = {locking.LEVEL_NODE: self.op.node_name}
2341 def BuildHooksEnv(self):
2344 This runs on the master node.
2348 "OP_TARGET": self.op.node_name,
2349 "MASTER_CANDIDATE": str(self.op.master_candidate),
2350 "OFFLINE": str(self.op.offline),
2351 "DRAINED": str(self.op.drained),
2353 nl = [self.cfg.GetMasterNode(),
2357 def CheckPrereq(self):
2358 """Check prerequisites.
2360 This only checks the instance list against the existing names.
2363 node = self.node = self.cfg.GetNodeInfo(self.op.node_name)
2365 if ((self.op.master_candidate == False or self.op.offline == True or
2366 self.op.drained == True) and node.master_candidate):
2367 # we will demote the node from master_candidate
2368 if self.op.node_name == self.cfg.GetMasterNode():
2369 raise errors.OpPrereqError("The master node has to be a"
2370 " master candidate, online and not drained")
2371 cp_size = self.cfg.GetClusterInfo().candidate_pool_size
2372 num_candidates, _ = self.cfg.GetMasterCandidateStats()
2373 if num_candidates <= cp_size:
2374 msg = ("Not enough master candidates (desired"
2375 " %d, new value will be %d)" % (cp_size, num_candidates-1))
2377 self.LogWarning(msg)
2379 raise errors.OpPrereqError(msg)
2381 if (self.op.master_candidate == True and
2382 ((node.offline and not self.op.offline == False) or
2383 (node.drained and not self.op.drained == False))):
2384 raise errors.OpPrereqError("Node '%s' is offline or drained, can't set"
2385 " to master_candidate" % node.name)
2389 def Exec(self, feedback_fn):
2398 if self.op.offline is not None:
2399 node.offline = self.op.offline
2400 result.append(("offline", str(self.op.offline)))
2401 if self.op.offline == True:
2402 if node.master_candidate:
2403 node.master_candidate = False
2405 result.append(("master_candidate", "auto-demotion due to offline"))
2407 node.drained = False
2408 result.append(("drained", "clear drained status due to offline"))
2410 if self.op.master_candidate is not None:
2411 node.master_candidate = self.op.master_candidate
2413 result.append(("master_candidate", str(self.op.master_candidate)))
2414 if self.op.master_candidate == False:
2415 rrc = self.rpc.call_node_demote_from_mc(node.name)
2416 msg = rrc.RemoteFailMsg()
2418 self.LogWarning("Node failed to demote itself: %s" % msg)
2420 if self.op.drained is not None:
2421 node.drained = self.op.drained
2422 result.append(("drained", str(self.op.drained)))
2423 if self.op.drained == True:
2424 if node.master_candidate:
2425 node.master_candidate = False
2427 result.append(("master_candidate", "auto-demotion due to drain"))
2429 node.offline = False
2430 result.append(("offline", "clear offline status due to drain"))
2432 # this will trigger configuration file update, if needed
2433 self.cfg.Update(node)
2434 # this will trigger job queue propagation or cleanup
2436 self.context.ReaddNode(node)
2441 class LUPowercycleNode(NoHooksLU):
2442 """Powercycles a node.
2445 _OP_REQP = ["node_name", "force"]
2448 def CheckArguments(self):
2449 node_name = self.cfg.ExpandNodeName(self.op.node_name)
2450 if node_name is None:
2451 raise errors.OpPrereqError("Invalid node name '%s'" % self.op.node_name)
2452 self.op.node_name = node_name
2453 if node_name == self.cfg.GetMasterNode() and not self.op.force:
2454 raise errors.OpPrereqError("The node is the master and the force"
2455 " parameter was not set")
2457 def ExpandNames(self):
2458 """Locking for PowercycleNode.
2460 This is a last-resource option and shouldn't block on other
2461 jobs. Therefore, we grab no locks.
2464 self.needed_locks = {}
2466 def CheckPrereq(self):
2467 """Check prerequisites.
2469 This LU has no prereqs.
2474 def Exec(self, feedback_fn):
2478 result = self.rpc.call_node_powercycle(self.op.node_name,
2479 self.cfg.GetHypervisorType())
2480 msg = result.RemoteFailMsg()
2482 raise errors.OpExecError("Failed to schedule the reboot: %s" % msg)
2483 return result.payload
2486 class LUQueryClusterInfo(NoHooksLU):
2487 """Query cluster configuration.
2493 def ExpandNames(self):
2494 self.needed_locks = {}
2496 def CheckPrereq(self):
2497 """No prerequsites needed for this LU.
2502 def Exec(self, feedback_fn):
2503 """Return cluster config.
2506 cluster = self.cfg.GetClusterInfo()
2508 "software_version": constants.RELEASE_VERSION,
2509 "protocol_version": constants.PROTOCOL_VERSION,
2510 "config_version": constants.CONFIG_VERSION,
2511 "os_api_version": constants.OS_API_VERSION,
2512 "export_version": constants.EXPORT_VERSION,
2513 "architecture": (platform.architecture()[0], platform.machine()),
2514 "name": cluster.cluster_name,
2515 "master": cluster.master_node,
2516 "default_hypervisor": cluster.default_hypervisor,
2517 "enabled_hypervisors": cluster.enabled_hypervisors,
2518 "hvparams": dict([(hypervisor, cluster.hvparams[hypervisor])
2519 for hypervisor in cluster.enabled_hypervisors]),
2520 "beparams": cluster.beparams,
2521 "candidate_pool_size": cluster.candidate_pool_size,
2522 "default_bridge": cluster.default_bridge,
2523 "master_netdev": cluster.master_netdev,
2524 "volume_group_name": cluster.volume_group_name,
2525 "file_storage_dir": cluster.file_storage_dir,
2531 class LUQueryConfigValues(NoHooksLU):
2532 """Return configuration values.
2537 _FIELDS_DYNAMIC = utils.FieldSet()
2538 _FIELDS_STATIC = utils.FieldSet("cluster_name", "master_node", "drain_flag")
2540 def ExpandNames(self):
2541 self.needed_locks = {}
2543 _CheckOutputFields(static=self._FIELDS_STATIC,
2544 dynamic=self._FIELDS_DYNAMIC,
2545 selected=self.op.output_fields)
2547 def CheckPrereq(self):
2548 """No prerequisites.
2553 def Exec(self, feedback_fn):
2554 """Dump a representation of the cluster config to the standard output.
2558 for field in self.op.output_fields:
2559 if field == "cluster_name":
2560 entry = self.cfg.GetClusterName()
2561 elif field == "master_node":
2562 entry = self.cfg.GetMasterNode()
2563 elif field == "drain_flag":
2564 entry = os.path.exists(constants.JOB_QUEUE_DRAIN_FILE)
2566 raise errors.ParameterError(field)
2567 values.append(entry)
2571 class LUActivateInstanceDisks(NoHooksLU):
2572 """Bring up an instance's disks.
2575 _OP_REQP = ["instance_name"]
2578 def ExpandNames(self):
2579 self._ExpandAndLockInstance()
2580 self.needed_locks[locking.LEVEL_NODE] = []
2581 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
2583 def DeclareLocks(self, level):
2584 if level == locking.LEVEL_NODE:
2585 self._LockInstancesNodes()
2587 def CheckPrereq(self):
2588 """Check prerequisites.
2590 This checks that the instance is in the cluster.
2593 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2594 assert self.instance is not None, \
2595 "Cannot retrieve locked instance %s" % self.op.instance_name
2596 _CheckNodeOnline(self, self.instance.primary_node)
2598 def Exec(self, feedback_fn):
2599 """Activate the disks.
2602 disks_ok, disks_info = _AssembleInstanceDisks(self, self.instance)
2604 raise errors.OpExecError("Cannot activate block devices")
2609 def _AssembleInstanceDisks(lu, instance, ignore_secondaries=False):
2610 """Prepare the block devices for an instance.
2612 This sets up the block devices on all nodes.
2614 @type lu: L{LogicalUnit}
2615 @param lu: the logical unit on whose behalf we execute
2616 @type instance: L{objects.Instance}
2617 @param instance: the instance for whose disks we assemble
2618 @type ignore_secondaries: boolean
2619 @param ignore_secondaries: if true, errors on secondary nodes
2620 won't result in an error return from the function
2621 @return: False if the operation failed, otherwise a list of
2622 (host, instance_visible_name, node_visible_name)
2623 with the mapping from node devices to instance devices
2628 iname = instance.name
2629 # With the two passes mechanism we try to reduce the window of
2630 # opportunity for the race condition of switching DRBD to primary
2631 # before handshaking occured, but we do not eliminate it
2633 # The proper fix would be to wait (with some limits) until the
2634 # connection has been made and drbd transitions from WFConnection
2635 # into any other network-connected state (Connected, SyncTarget,
2638 # 1st pass, assemble on all nodes in secondary mode
2639 for inst_disk in instance.disks:
2640 for node, node_disk in inst_disk.ComputeNodeTree(instance.primary_node):
2641 lu.cfg.SetDiskID(node_disk, node)
2642 result = lu.rpc.call_blockdev_assemble(node, node_disk, iname, False)
2643 msg = result.RemoteFailMsg()
2645 lu.proc.LogWarning("Could not prepare block device %s on node %s"
2646 " (is_primary=False, pass=1): %s",
2647 inst_disk.iv_name, node, msg)
2648 if not ignore_secondaries:
2651 # FIXME: race condition on drbd migration to primary
2653 # 2nd pass, do only the primary node
2654 for inst_disk in instance.disks:
2655 for node, node_disk in inst_disk.ComputeNodeTree(instance.primary_node):
2656 if node != instance.primary_node:
2658 lu.cfg.SetDiskID(node_disk, node)
2659 result = lu.rpc.call_blockdev_assemble(node, node_disk, iname, True)
2660 msg = result.RemoteFailMsg()
2662 lu.proc.LogWarning("Could not prepare block device %s on node %s"
2663 " (is_primary=True, pass=2): %s",
2664 inst_disk.iv_name, node, msg)
2666 device_info.append((instance.primary_node, inst_disk.iv_name,
2669 # leave the disks configured for the primary node
2670 # this is a workaround that would be fixed better by
2671 # improving the logical/physical id handling
2672 for disk in instance.disks:
2673 lu.cfg.SetDiskID(disk, instance.primary_node)
2675 return disks_ok, device_info
2678 def _StartInstanceDisks(lu, instance, force):
2679 """Start the disks of an instance.
2682 disks_ok, dummy = _AssembleInstanceDisks(lu, instance,
2683 ignore_secondaries=force)
2685 _ShutdownInstanceDisks(lu, instance)
2686 if force is not None and not force:
2687 lu.proc.LogWarning("", hint="If the message above refers to a"
2689 " you can retry the operation using '--force'.")
2690 raise errors.OpExecError("Disk consistency error")
2693 class LUDeactivateInstanceDisks(NoHooksLU):
2694 """Shutdown an instance's disks.
2697 _OP_REQP = ["instance_name"]
2700 def ExpandNames(self):
2701 self._ExpandAndLockInstance()
2702 self.needed_locks[locking.LEVEL_NODE] = []
2703 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
2705 def DeclareLocks(self, level):
2706 if level == locking.LEVEL_NODE:
2707 self._LockInstancesNodes()
2709 def CheckPrereq(self):
2710 """Check prerequisites.
2712 This checks that the instance is in the cluster.
2715 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2716 assert self.instance is not None, \
2717 "Cannot retrieve locked instance %s" % self.op.instance_name
2719 def Exec(self, feedback_fn):
2720 """Deactivate the disks
2723 instance = self.instance
2724 _SafeShutdownInstanceDisks(self, instance)
2727 def _SafeShutdownInstanceDisks(lu, instance):
2728 """Shutdown block devices of an instance.
2730 This function checks if an instance is running, before calling
2731 _ShutdownInstanceDisks.
2734 ins_l = lu.rpc.call_instance_list([instance.primary_node],
2735 [instance.hypervisor])
2736 ins_l = ins_l[instance.primary_node]
2737 if ins_l.failed or not isinstance(ins_l.data, list):
2738 raise errors.OpExecError("Can't contact node '%s'" %
2739 instance.primary_node)
2741 if instance.name in ins_l.data:
2742 raise errors.OpExecError("Instance is running, can't shutdown"
2745 _ShutdownInstanceDisks(lu, instance)
2748 def _ShutdownInstanceDisks(lu, instance, ignore_primary=False):
2749 """Shutdown block devices of an instance.
2751 This does the shutdown on all nodes of the instance.
2753 If the ignore_primary is false, errors on the primary node are
2758 for disk in instance.disks:
2759 for node, top_disk in disk.ComputeNodeTree(instance.primary_node):
2760 lu.cfg.SetDiskID(top_disk, node)
2761 result = lu.rpc.call_blockdev_shutdown(node, top_disk)
2762 msg = result.RemoteFailMsg()
2764 lu.LogWarning("Could not shutdown block device %s on node %s: %s",
2765 disk.iv_name, node, msg)
2766 if not ignore_primary or node != instance.primary_node:
2771 def _CheckNodeFreeMemory(lu, node, reason, requested, hypervisor_name):
2772 """Checks if a node has enough free memory.
2774 This function check if a given node has the needed amount of free
2775 memory. In case the node has less memory or we cannot get the
2776 information from the node, this function raise an OpPrereqError
2779 @type lu: C{LogicalUnit}
2780 @param lu: a logical unit from which we get configuration data
2782 @param node: the node to check
2783 @type reason: C{str}
2784 @param reason: string to use in the error message
2785 @type requested: C{int}
2786 @param requested: the amount of memory in MiB to check for
2787 @type hypervisor_name: C{str}
2788 @param hypervisor_name: the hypervisor to ask for memory stats
2789 @raise errors.OpPrereqError: if the node doesn't have enough memory, or
2790 we cannot check the node
2793 nodeinfo = lu.rpc.call_node_info([node], lu.cfg.GetVGName(), hypervisor_name)
2794 nodeinfo[node].Raise()
2795 free_mem = nodeinfo[node].data.get('memory_free')
2796 if not isinstance(free_mem, int):
2797 raise errors.OpPrereqError("Can't compute free memory on node %s, result"
2798 " was '%s'" % (node, free_mem))
2799 if requested > free_mem:
2800 raise errors.OpPrereqError("Not enough memory on node %s for %s:"
2801 " needed %s MiB, available %s MiB" %
2802 (node, reason, requested, free_mem))
2805 class LUStartupInstance(LogicalUnit):
2806 """Starts an instance.
2809 HPATH = "instance-start"
2810 HTYPE = constants.HTYPE_INSTANCE
2811 _OP_REQP = ["instance_name", "force"]
2814 def ExpandNames(self):
2815 self._ExpandAndLockInstance()
2817 def BuildHooksEnv(self):
2820 This runs on master, primary and secondary nodes of the instance.
2824 "FORCE": self.op.force,
2826 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
2827 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
2830 def CheckPrereq(self):
2831 """Check prerequisites.
2833 This checks that the instance is in the cluster.
2836 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2837 assert self.instance is not None, \
2838 "Cannot retrieve locked instance %s" % self.op.instance_name
2841 self.beparams = getattr(self.op, "beparams", {})
2843 if not isinstance(self.beparams, dict):
2844 raise errors.OpPrereqError("Invalid beparams passed: %s, expected"
2845 " dict" % (type(self.beparams), ))
2846 # fill the beparams dict
2847 utils.ForceDictType(self.beparams, constants.BES_PARAMETER_TYPES)
2848 self.op.beparams = self.beparams
2851 self.hvparams = getattr(self.op, "hvparams", {})
2853 if not isinstance(self.hvparams, dict):
2854 raise errors.OpPrereqError("Invalid hvparams passed: %s, expected"
2855 " dict" % (type(self.hvparams), ))
2857 # check hypervisor parameter syntax (locally)
2858 cluster = self.cfg.GetClusterInfo()
2859 utils.ForceDictType(self.hvparams, constants.HVS_PARAMETER_TYPES)
2860 filled_hvp = objects.FillDict(cluster.hvparams[instance.hypervisor],
2862 filled_hvp.update(self.hvparams)
2863 hv_type = hypervisor.GetHypervisor(instance.hypervisor)
2864 hv_type.CheckParameterSyntax(filled_hvp)
2865 _CheckHVParams(self, instance.all_nodes, instance.hypervisor, filled_hvp)
2866 self.op.hvparams = self.hvparams
2868 _CheckNodeOnline(self, instance.primary_node)
2870 bep = self.cfg.GetClusterInfo().FillBE(instance)
2871 # check bridges existance
2872 _CheckInstanceBridgesExist(self, instance)
2874 remote_info = self.rpc.call_instance_info(instance.primary_node,
2876 instance.hypervisor)
2878 if not remote_info.data:
2879 _CheckNodeFreeMemory(self, instance.primary_node,
2880 "starting instance %s" % instance.name,
2881 bep[constants.BE_MEMORY], instance.hypervisor)
2883 def Exec(self, feedback_fn):
2884 """Start the instance.
2887 instance = self.instance
2888 force = self.op.force
2890 self.cfg.MarkInstanceUp(instance.name)
2892 node_current = instance.primary_node
2894 _StartInstanceDisks(self, instance, force)
2896 result = self.rpc.call_instance_start(node_current, instance,
2897 self.hvparams, self.beparams)
2898 msg = result.RemoteFailMsg()
2900 _ShutdownInstanceDisks(self, instance)
2901 raise errors.OpExecError("Could not start instance: %s" % msg)
2904 class LURebootInstance(LogicalUnit):
2905 """Reboot an instance.
2908 HPATH = "instance-reboot"
2909 HTYPE = constants.HTYPE_INSTANCE
2910 _OP_REQP = ["instance_name", "ignore_secondaries", "reboot_type"]
2913 def ExpandNames(self):
2914 if self.op.reboot_type not in [constants.INSTANCE_REBOOT_SOFT,
2915 constants.INSTANCE_REBOOT_HARD,
2916 constants.INSTANCE_REBOOT_FULL]:
2917 raise errors.ParameterError("reboot type not in [%s, %s, %s]" %
2918 (constants.INSTANCE_REBOOT_SOFT,
2919 constants.INSTANCE_REBOOT_HARD,
2920 constants.INSTANCE_REBOOT_FULL))
2921 self._ExpandAndLockInstance()
2923 def BuildHooksEnv(self):
2926 This runs on master, primary and secondary nodes of the instance.
2930 "IGNORE_SECONDARIES": self.op.ignore_secondaries,
2931 "REBOOT_TYPE": self.op.reboot_type,
2933 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
2934 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
2937 def CheckPrereq(self):
2938 """Check prerequisites.
2940 This checks that the instance is in the cluster.
2943 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2944 assert self.instance is not None, \
2945 "Cannot retrieve locked instance %s" % self.op.instance_name
2947 _CheckNodeOnline(self, instance.primary_node)
2949 # check bridges existance
2950 _CheckInstanceBridgesExist(self, instance)
2952 def Exec(self, feedback_fn):
2953 """Reboot the instance.
2956 instance = self.instance
2957 ignore_secondaries = self.op.ignore_secondaries
2958 reboot_type = self.op.reboot_type
2960 node_current = instance.primary_node
2962 if reboot_type in [constants.INSTANCE_REBOOT_SOFT,
2963 constants.INSTANCE_REBOOT_HARD]:
2964 for disk in instance.disks:
2965 self.cfg.SetDiskID(disk, node_current)
2966 result = self.rpc.call_instance_reboot(node_current, instance,
2968 msg = result.RemoteFailMsg()
2970 raise errors.OpExecError("Could not reboot instance: %s" % msg)
2972 result = self.rpc.call_instance_shutdown(node_current, instance)
2973 msg = result.RemoteFailMsg()
2975 raise errors.OpExecError("Could not shutdown instance for"
2976 " full reboot: %s" % msg)
2977 _ShutdownInstanceDisks(self, instance)
2978 _StartInstanceDisks(self, instance, ignore_secondaries)
2979 result = self.rpc.call_instance_start(node_current, instance, None, None)
2980 msg = result.RemoteFailMsg()
2982 _ShutdownInstanceDisks(self, instance)
2983 raise errors.OpExecError("Could not start instance for"
2984 " full reboot: %s" % msg)
2986 self.cfg.MarkInstanceUp(instance.name)
2989 class LUShutdownInstance(LogicalUnit):
2990 """Shutdown an instance.
2993 HPATH = "instance-stop"
2994 HTYPE = constants.HTYPE_INSTANCE
2995 _OP_REQP = ["instance_name"]
2998 def ExpandNames(self):
2999 self._ExpandAndLockInstance()
3001 def BuildHooksEnv(self):
3004 This runs on master, primary and secondary nodes of the instance.
3007 env = _BuildInstanceHookEnvByObject(self, self.instance)
3008 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
3011 def CheckPrereq(self):
3012 """Check prerequisites.
3014 This checks that the instance is in the cluster.
3017 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3018 assert self.instance is not None, \
3019 "Cannot retrieve locked instance %s" % self.op.instance_name
3020 _CheckNodeOnline(self, self.instance.primary_node)
3022 def Exec(self, feedback_fn):
3023 """Shutdown the instance.
3026 instance = self.instance
3027 node_current = instance.primary_node
3028 self.cfg.MarkInstanceDown(instance.name)
3029 result = self.rpc.call_instance_shutdown(node_current, instance)
3030 msg = result.RemoteFailMsg()
3032 self.proc.LogWarning("Could not shutdown instance: %s" % msg)
3034 _ShutdownInstanceDisks(self, instance)
3037 class LUReinstallInstance(LogicalUnit):
3038 """Reinstall an instance.
3041 HPATH = "instance-reinstall"
3042 HTYPE = constants.HTYPE_INSTANCE
3043 _OP_REQP = ["instance_name"]
3046 def ExpandNames(self):
3047 self._ExpandAndLockInstance()
3049 def BuildHooksEnv(self):
3052 This runs on master, primary and secondary nodes of the instance.
3055 env = _BuildInstanceHookEnvByObject(self, self.instance)
3056 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
3059 def CheckPrereq(self):
3060 """Check prerequisites.
3062 This checks that the instance is in the cluster and is not running.
3065 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3066 assert instance is not None, \
3067 "Cannot retrieve locked instance %s" % self.op.instance_name
3068 _CheckNodeOnline(self, instance.primary_node)
3070 if instance.disk_template == constants.DT_DISKLESS:
3071 raise errors.OpPrereqError("Instance '%s' has no disks" %
3072 self.op.instance_name)
3073 if instance.admin_up:
3074 raise errors.OpPrereqError("Instance '%s' is marked to be up" %
3075 self.op.instance_name)
3076 remote_info = self.rpc.call_instance_info(instance.primary_node,
3078 instance.hypervisor)
3080 if remote_info.data:
3081 raise errors.OpPrereqError("Instance '%s' is running on the node %s" %
3082 (self.op.instance_name,
3083 instance.primary_node))
3085 self.op.os_type = getattr(self.op, "os_type", None)
3086 if self.op.os_type is not None:
3088 pnode = self.cfg.GetNodeInfo(
3089 self.cfg.ExpandNodeName(instance.primary_node))
3091 raise errors.OpPrereqError("Primary node '%s' is unknown" %
3093 result = self.rpc.call_os_get(pnode.name, self.op.os_type)
3095 if not isinstance(result.data, objects.OS):
3096 raise errors.OpPrereqError("OS '%s' not in supported OS list for"
3097 " primary node" % self.op.os_type)
3099 self.instance = instance
3101 def Exec(self, feedback_fn):
3102 """Reinstall the instance.
3105 inst = self.instance
3107 if self.op.os_type is not None:
3108 feedback_fn("Changing OS to '%s'..." % self.op.os_type)
3109 inst.os = self.op.os_type
3110 self.cfg.Update(inst)
3112 _StartInstanceDisks(self, inst, None)
3114 feedback_fn("Running the instance OS create scripts...")
3115 result = self.rpc.call_instance_os_add(inst.primary_node, inst, True)
3116 msg = result.RemoteFailMsg()
3118 raise errors.OpExecError("Could not install OS for instance %s"
3120 (inst.name, inst.primary_node, msg))
3122 _ShutdownInstanceDisks(self, inst)
3125 class LURenameInstance(LogicalUnit):
3126 """Rename an instance.
3129 HPATH = "instance-rename"
3130 HTYPE = constants.HTYPE_INSTANCE
3131 _OP_REQP = ["instance_name", "new_name"]
3133 def BuildHooksEnv(self):
3136 This runs on master, primary and secondary nodes of the instance.
3139 env = _BuildInstanceHookEnvByObject(self, self.instance)
3140 env["INSTANCE_NEW_NAME"] = self.op.new_name
3141 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
3144 def CheckPrereq(self):
3145 """Check prerequisites.
3147 This checks that the instance is in the cluster and is not running.
3150 instance = self.cfg.GetInstanceInfo(
3151 self.cfg.ExpandInstanceName(self.op.instance_name))
3152 if instance is None:
3153 raise errors.OpPrereqError("Instance '%s' not known" %
3154 self.op.instance_name)
3155 _CheckNodeOnline(self, instance.primary_node)
3157 if instance.admin_up:
3158 raise errors.OpPrereqError("Instance '%s' is marked to be up" %
3159 self.op.instance_name)
3160 remote_info = self.rpc.call_instance_info(instance.primary_node,
3162 instance.hypervisor)
3164 if remote_info.data:
3165 raise errors.OpPrereqError("Instance '%s' is running on the node %s" %
3166 (self.op.instance_name,
3167 instance.primary_node))
3168 self.instance = instance
3170 # new name verification
3171 name_info = utils.HostInfo(self.op.new_name)
3173 self.op.new_name = new_name = name_info.name
3174 instance_list = self.cfg.GetInstanceList()
3175 if new_name in instance_list:
3176 raise errors.OpPrereqError("Instance '%s' is already in the cluster" %
3179 if not getattr(self.op, "ignore_ip", False):
3180 if utils.TcpPing(name_info.ip, constants.DEFAULT_NODED_PORT):
3181 raise errors.OpPrereqError("IP %s of instance %s already in use" %
3182 (name_info.ip, new_name))
3185 def Exec(self, feedback_fn):
3186 """Reinstall the instance.
3189 inst = self.instance
3190 old_name = inst.name
3192 if inst.disk_template == constants.DT_FILE:
3193 old_file_storage_dir = os.path.dirname(inst.disks[0].logical_id[1])
3195 self.cfg.RenameInstance(inst.name, self.op.new_name)
3196 # Change the instance lock. This is definitely safe while we hold the BGL
3197 self.context.glm.remove(locking.LEVEL_INSTANCE, old_name)
3198 self.context.glm.add(locking.LEVEL_INSTANCE, self.op.new_name)
3200 # re-read the instance from the configuration after rename
3201 inst = self.cfg.GetInstanceInfo(self.op.new_name)
3203 if inst.disk_template == constants.DT_FILE:
3204 new_file_storage_dir = os.path.dirname(inst.disks[0].logical_id[1])
3205 result = self.rpc.call_file_storage_dir_rename(inst.primary_node,
3206 old_file_storage_dir,
3207 new_file_storage_dir)
3210 raise errors.OpExecError("Could not connect to node '%s' to rename"
3211 " directory '%s' to '%s' (but the instance"
3212 " has been renamed in Ganeti)" % (
3213 inst.primary_node, old_file_storage_dir,
3214 new_file_storage_dir))
3216 if not result.data[0]:
3217 raise errors.OpExecError("Could not rename directory '%s' to '%s'"
3218 " (but the instance has been renamed in"
3219 " Ganeti)" % (old_file_storage_dir,
3220 new_file_storage_dir))
3222 _StartInstanceDisks(self, inst, None)
3224 result = self.rpc.call_instance_run_rename(inst.primary_node, inst,
3226 msg = result.RemoteFailMsg()
3228 msg = ("Could not run OS rename script for instance %s on node %s"
3229 " (but the instance has been renamed in Ganeti): %s" %
3230 (inst.name, inst.primary_node, msg))
3231 self.proc.LogWarning(msg)
3233 _ShutdownInstanceDisks(self, inst)
3236 class LURemoveInstance(LogicalUnit):
3237 """Remove an instance.
3240 HPATH = "instance-remove"
3241 HTYPE = constants.HTYPE_INSTANCE
3242 _OP_REQP = ["instance_name", "ignore_failures"]
3245 def ExpandNames(self):
3246 self._ExpandAndLockInstance()
3247 self.needed_locks[locking.LEVEL_NODE] = []
3248 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3250 def DeclareLocks(self, level):
3251 if level == locking.LEVEL_NODE:
3252 self._LockInstancesNodes()
3254 def BuildHooksEnv(self):
3257 This runs on master, primary and secondary nodes of the instance.
3260 env = _BuildInstanceHookEnvByObject(self, self.instance)
3261 nl = [self.cfg.GetMasterNode()]
3264 def CheckPrereq(self):
3265 """Check prerequisites.
3267 This checks that the instance is in the cluster.
3270 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3271 assert self.instance is not None, \
3272 "Cannot retrieve locked instance %s" % self.op.instance_name
3274 def Exec(self, feedback_fn):
3275 """Remove the instance.
3278 instance = self.instance
3279 logging.info("Shutting down instance %s on node %s",
3280 instance.name, instance.primary_node)
3282 result = self.rpc.call_instance_shutdown(instance.primary_node, instance)
3283 msg = result.RemoteFailMsg()
3285 if self.op.ignore_failures:
3286 feedback_fn("Warning: can't shutdown instance: %s" % msg)
3288 raise errors.OpExecError("Could not shutdown instance %s on"
3290 (instance.name, instance.primary_node, msg))
3292 logging.info("Removing block devices for instance %s", instance.name)
3294 if not _RemoveDisks(self, instance):
3295 if self.op.ignore_failures:
3296 feedback_fn("Warning: can't remove instance's disks")
3298 raise errors.OpExecError("Can't remove instance's disks")
3300 logging.info("Removing instance %s out of cluster config", instance.name)
3302 self.cfg.RemoveInstance(instance.name)
3303 self.remove_locks[locking.LEVEL_INSTANCE] = instance.name
3306 class LUQueryInstances(NoHooksLU):
3307 """Logical unit for querying instances.
3310 _OP_REQP = ["output_fields", "names", "use_locking"]
3312 _FIELDS_STATIC = utils.FieldSet(*["name", "os", "pnode", "snodes",
3314 "disk_template", "ip", "mac", "bridge",
3315 "sda_size", "sdb_size", "vcpus", "tags",
3316 "network_port", "beparams",
3317 r"(disk)\.(size)/([0-9]+)",
3318 r"(disk)\.(sizes)", "disk_usage",
3319 r"(nic)\.(mac|ip|bridge)/([0-9]+)",
3320 r"(nic)\.(macs|ips|bridges)",
3321 r"(disk|nic)\.(count)",
3322 "serial_no", "hypervisor", "hvparams",] +
3324 for name in constants.HVS_PARAMETERS] +
3326 for name in constants.BES_PARAMETERS])
3327 _FIELDS_DYNAMIC = utils.FieldSet("oper_state", "oper_ram", "status")
3330 def ExpandNames(self):
3331 _CheckOutputFields(static=self._FIELDS_STATIC,
3332 dynamic=self._FIELDS_DYNAMIC,
3333 selected=self.op.output_fields)
3335 self.needed_locks = {}
3336 self.share_locks[locking.LEVEL_INSTANCE] = 1
3337 self.share_locks[locking.LEVEL_NODE] = 1
3340 self.wanted = _GetWantedInstances(self, self.op.names)
3342 self.wanted = locking.ALL_SET
3344 self.do_node_query = self._FIELDS_STATIC.NonMatching(self.op.output_fields)
3345 self.do_locking = self.do_node_query and self.op.use_locking
3347 self.needed_locks[locking.LEVEL_INSTANCE] = self.wanted
3348 self.needed_locks[locking.LEVEL_NODE] = []
3349 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3351 def DeclareLocks(self, level):
3352 if level == locking.LEVEL_NODE and self.do_locking:
3353 self._LockInstancesNodes()
3355 def CheckPrereq(self):
3356 """Check prerequisites.
3361 def Exec(self, feedback_fn):
3362 """Computes the list of nodes and their attributes.
3365 all_info = self.cfg.GetAllInstancesInfo()
3366 if self.wanted == locking.ALL_SET:
3367 # caller didn't specify instance names, so ordering is not important
3369 instance_names = self.acquired_locks[locking.LEVEL_INSTANCE]
3371 instance_names = all_info.keys()
3372 instance_names = utils.NiceSort(instance_names)
3374 # caller did specify names, so we must keep the ordering
3376 tgt_set = self.acquired_locks[locking.LEVEL_INSTANCE]
3378 tgt_set = all_info.keys()
3379 missing = set(self.wanted).difference(tgt_set)
3381 raise errors.OpExecError("Some instances were removed before"
3382 " retrieving their data: %s" % missing)
3383 instance_names = self.wanted
3385 instance_list = [all_info[iname] for iname in instance_names]
3387 # begin data gathering
3389 nodes = frozenset([inst.primary_node for inst in instance_list])
3390 hv_list = list(set([inst.hypervisor for inst in instance_list]))
3394 if self.do_node_query:
3396 node_data = self.rpc.call_all_instances_info(nodes, hv_list)
3398 result = node_data[name]
3400 # offline nodes will be in both lists
3401 off_nodes.append(name)
3403 bad_nodes.append(name)
3406 live_data.update(result.data)
3407 # else no instance is alive
3409 live_data = dict([(name, {}) for name in instance_names])
3411 # end data gathering
3416 for instance in instance_list:
3418 i_hv = self.cfg.GetClusterInfo().FillHV(instance)
3419 i_be = self.cfg.GetClusterInfo().FillBE(instance)
3420 for field in self.op.output_fields:
3421 st_match = self._FIELDS_STATIC.Matches(field)
3426 elif field == "pnode":
3427 val = instance.primary_node
3428 elif field == "snodes":
3429 val = list(instance.secondary_nodes)
3430 elif field == "admin_state":
3431 val = instance.admin_up
3432 elif field == "oper_state":
3433 if instance.primary_node in bad_nodes:
3436 val = bool(live_data.get(instance.name))
3437 elif field == "status":
3438 if instance.primary_node in off_nodes:
3439 val = "ERROR_nodeoffline"
3440 elif instance.primary_node in bad_nodes:
3441 val = "ERROR_nodedown"
3443 running = bool(live_data.get(instance.name))
3445 if instance.admin_up:
3450 if instance.admin_up:
3454 elif field == "oper_ram":
3455 if instance.primary_node in bad_nodes:
3457 elif instance.name in live_data:
3458 val = live_data[instance.name].get("memory", "?")
3461 elif field == "disk_template":
3462 val = instance.disk_template
3464 val = instance.nics[0].ip
3465 elif field == "bridge":
3466 val = instance.nics[0].bridge
3467 elif field == "mac":
3468 val = instance.nics[0].mac
3469 elif field == "sda_size" or field == "sdb_size":
3470 idx = ord(field[2]) - ord('a')
3472 val = instance.FindDisk(idx).size
3473 except errors.OpPrereqError:
3475 elif field == "disk_usage": # total disk usage per node
3476 disk_sizes = [{'size': disk.size} for disk in instance.disks]
3477 val = _ComputeDiskSize(instance.disk_template, disk_sizes)
3478 elif field == "tags":
3479 val = list(instance.GetTags())
3480 elif field == "serial_no":
3481 val = instance.serial_no
3482 elif field == "network_port":
3483 val = instance.network_port
3484 elif field == "hypervisor":
3485 val = instance.hypervisor
3486 elif field == "hvparams":
3488 elif (field.startswith(HVPREFIX) and
3489 field[len(HVPREFIX):] in constants.HVS_PARAMETERS):
3490 val = i_hv.get(field[len(HVPREFIX):], None)
3491 elif field == "beparams":
3493 elif (field.startswith(BEPREFIX) and
3494 field[len(BEPREFIX):] in constants.BES_PARAMETERS):
3495 val = i_be.get(field[len(BEPREFIX):], None)
3496 elif st_match and st_match.groups():
3497 # matches a variable list
3498 st_groups = st_match.groups()
3499 if st_groups and st_groups[0] == "disk":
3500 if st_groups[1] == "count":
3501 val = len(instance.disks)
3502 elif st_groups[1] == "sizes":
3503 val = [disk.size for disk in instance.disks]
3504 elif st_groups[1] == "size":
3506 val = instance.FindDisk(st_groups[2]).size
3507 except errors.OpPrereqError:
3510 assert False, "Unhandled disk parameter"
3511 elif st_groups[0] == "nic":
3512 if st_groups[1] == "count":
3513 val = len(instance.nics)
3514 elif st_groups[1] == "macs":
3515 val = [nic.mac for nic in instance.nics]
3516 elif st_groups[1] == "ips":
3517 val = [nic.ip for nic in instance.nics]
3518 elif st_groups[1] == "bridges":
3519 val = [nic.bridge for nic in instance.nics]
3522 nic_idx = int(st_groups[2])
3523 if nic_idx >= len(instance.nics):
3526 if st_groups[1] == "mac":
3527 val = instance.nics[nic_idx].mac
3528 elif st_groups[1] == "ip":
3529 val = instance.nics[nic_idx].ip
3530 elif st_groups[1] == "bridge":
3531 val = instance.nics[nic_idx].bridge
3533 assert False, "Unhandled NIC parameter"
3535 assert False, "Unhandled variable parameter"
3537 raise errors.ParameterError(field)
3544 class LUFailoverInstance(LogicalUnit):
3545 """Failover an instance.
3548 HPATH = "instance-failover"
3549 HTYPE = constants.HTYPE_INSTANCE
3550 _OP_REQP = ["instance_name", "ignore_consistency"]
3553 def ExpandNames(self):
3554 self._ExpandAndLockInstance()
3555 self.needed_locks[locking.LEVEL_NODE] = []
3556 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3558 def DeclareLocks(self, level):
3559 if level == locking.LEVEL_NODE:
3560 self._LockInstancesNodes()
3562 def BuildHooksEnv(self):
3565 This runs on master, primary and secondary nodes of the instance.
3569 "IGNORE_CONSISTENCY": self.op.ignore_consistency,
3571 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
3572 nl = [self.cfg.GetMasterNode()] + list(self.instance.secondary_nodes)
3575 def CheckPrereq(self):
3576 """Check prerequisites.
3578 This checks that the instance is in the cluster.
3581 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3582 assert self.instance is not None, \
3583 "Cannot retrieve locked instance %s" % self.op.instance_name
3585 bep = self.cfg.GetClusterInfo().FillBE(instance)
3586 if instance.disk_template not in constants.DTS_NET_MIRROR:
3587 raise errors.OpPrereqError("Instance's disk layout is not"
3588 " network mirrored, cannot failover.")
3590 secondary_nodes = instance.secondary_nodes
3591 if not secondary_nodes:
3592 raise errors.ProgrammerError("no secondary node but using "
3593 "a mirrored disk template")
3595 target_node = secondary_nodes[0]
3596 _CheckNodeOnline(self, target_node)
3597 _CheckNodeNotDrained(self, target_node)
3598 # check memory requirements on the secondary node
3599 _CheckNodeFreeMemory(self, target_node, "failing over instance %s" %
3600 instance.name, bep[constants.BE_MEMORY],
3601 instance.hypervisor)
3603 # check bridge existance
3604 brlist = [nic.bridge for nic in instance.nics]
3605 result = self.rpc.call_bridges_exist(target_node, brlist)
3608 raise errors.OpPrereqError("One or more target bridges %s does not"
3609 " exist on destination node '%s'" %
3610 (brlist, target_node))
3612 def Exec(self, feedback_fn):
3613 """Failover an instance.
3615 The failover is done by shutting it down on its present node and
3616 starting it on the secondary.
3619 instance = self.instance
3621 source_node = instance.primary_node
3622 target_node = instance.secondary_nodes[0]
3624 feedback_fn("* checking disk consistency between source and target")
3625 for dev in instance.disks:
3626 # for drbd, these are drbd over lvm
3627 if not _CheckDiskConsistency(self, dev, target_node, False):
3628 if instance.admin_up and not self.op.ignore_consistency:
3629 raise errors.OpExecError("Disk %s is degraded on target node,"
3630 " aborting failover." % dev.iv_name)
3632 feedback_fn("* shutting down instance on source node")
3633 logging.info("Shutting down instance %s on node %s",
3634 instance.name, source_node)
3636 result = self.rpc.call_instance_shutdown(source_node, instance)
3637 msg = result.RemoteFailMsg()
3639 if self.op.ignore_consistency:
3640 self.proc.LogWarning("Could not shutdown instance %s on node %s."
3641 " Proceeding anyway. Please make sure node"
3642 " %s is down. Error details: %s",
3643 instance.name, source_node, source_node, msg)
3645 raise errors.OpExecError("Could not shutdown instance %s on"
3647 (instance.name, source_node, msg))
3649 feedback_fn("* deactivating the instance's disks on source node")
3650 if not _ShutdownInstanceDisks(self, instance, ignore_primary=True):
3651 raise errors.OpExecError("Can't shut down the instance's disks.")
3653 instance.primary_node = target_node
3654 # distribute new instance config to the other nodes
3655 self.cfg.Update(instance)
3657 # Only start the instance if it's marked as up
3658 if instance.admin_up:
3659 feedback_fn("* activating the instance's disks on target node")
3660 logging.info("Starting instance %s on node %s",
3661 instance.name, target_node)
3663 disks_ok, dummy = _AssembleInstanceDisks(self, instance,
3664 ignore_secondaries=True)
3666 _ShutdownInstanceDisks(self, instance)
3667 raise errors.OpExecError("Can't activate the instance's disks")
3669 feedback_fn("* starting the instance on the target node")
3670 result = self.rpc.call_instance_start(target_node, instance, None, None)
3671 msg = result.RemoteFailMsg()
3673 _ShutdownInstanceDisks(self, instance)
3674 raise errors.OpExecError("Could not start instance %s on node %s: %s" %
3675 (instance.name, target_node, msg))
3678 class LUMigrateInstance(LogicalUnit):
3679 """Migrate an instance.
3681 This is migration without shutting down, compared to the failover,
3682 which is done with shutdown.
3685 HPATH = "instance-migrate"
3686 HTYPE = constants.HTYPE_INSTANCE
3687 _OP_REQP = ["instance_name", "live", "cleanup"]
3691 def ExpandNames(self):
3692 self._ExpandAndLockInstance()
3693 self.needed_locks[locking.LEVEL_NODE] = []
3694 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3696 def DeclareLocks(self, level):
3697 if level == locking.LEVEL_NODE:
3698 self._LockInstancesNodes()
3700 def BuildHooksEnv(self):
3703 This runs on master, primary and secondary nodes of the instance.
3706 env = _BuildInstanceHookEnvByObject(self, self.instance)
3707 env["MIGRATE_LIVE"] = self.op.live
3708 env["MIGRATE_CLEANUP"] = self.op.cleanup
3709 nl = [self.cfg.GetMasterNode()] + list(self.instance.secondary_nodes)
3712 def CheckPrereq(self):
3713 """Check prerequisites.
3715 This checks that the instance is in the cluster.
3718 instance = self.cfg.GetInstanceInfo(
3719 self.cfg.ExpandInstanceName(self.op.instance_name))
3720 if instance is None:
3721 raise errors.OpPrereqError("Instance '%s' not known" %
3722 self.op.instance_name)
3724 if instance.disk_template != constants.DT_DRBD8:
3725 raise errors.OpPrereqError("Instance's disk layout is not"
3726 " drbd8, cannot migrate.")
3728 secondary_nodes = instance.secondary_nodes
3729 if not secondary_nodes:
3730 raise errors.ConfigurationError("No secondary node but using"
3731 " drbd8 disk template")
3733 i_be = self.cfg.GetClusterInfo().FillBE(instance)
3735 target_node = secondary_nodes[0]
3736 # check memory requirements on the secondary node
3737 _CheckNodeFreeMemory(self, target_node, "migrating instance %s" %
3738 instance.name, i_be[constants.BE_MEMORY],
3739 instance.hypervisor)
3741 # check bridge existance
3742 brlist = [nic.bridge for nic in instance.nics]
3743 result = self.rpc.call_bridges_exist(target_node, brlist)
3744 if result.failed or not result.data:
3745 raise errors.OpPrereqError("One or more target bridges %s does not"
3746 " exist on destination node '%s'" %
3747 (brlist, target_node))
3749 if not self.op.cleanup:
3750 _CheckNodeNotDrained(self, target_node)
3751 result = self.rpc.call_instance_migratable(instance.primary_node,
3753 msg = result.RemoteFailMsg()
3755 raise errors.OpPrereqError("Can't migrate: %s - please use failover" %
3758 self.instance = instance
3760 def _WaitUntilSync(self):
3761 """Poll with custom rpc for disk sync.
3763 This uses our own step-based rpc call.
3766 self.feedback_fn("* wait until resync is done")
3770 result = self.rpc.call_drbd_wait_sync(self.all_nodes,
3772 self.instance.disks)
3774 for node, nres in result.items():
3775 msg = nres.RemoteFailMsg()
3777 raise errors.OpExecError("Cannot resync disks on node %s: %s" %
3779 node_done, node_percent = nres.payload
3780 all_done = all_done and node_done
3781 if node_percent is not None:
3782 min_percent = min(min_percent, node_percent)
3784 if min_percent < 100:
3785 self.feedback_fn(" - progress: %.1f%%" % min_percent)
3788 def _EnsureSecondary(self, node):
3789 """Demote a node to secondary.
3792 self.feedback_fn("* switching node %s to secondary mode" % node)
3794 for dev in self.instance.disks:
3795 self.cfg.SetDiskID(dev, node)
3797 result = self.rpc.call_blockdev_close(node, self.instance.name,
3798 self.instance.disks)
3799 msg = result.RemoteFailMsg()
3801 raise errors.OpExecError("Cannot change disk to secondary on node %s,"
3802 " error %s" % (node, msg))
3804 def _GoStandalone(self):
3805 """Disconnect from the network.
3808 self.feedback_fn("* changing into standalone mode")
3809 result = self.rpc.call_drbd_disconnect_net(self.all_nodes, self.nodes_ip,
3810 self.instance.disks)
3811 for node, nres in result.items():
3812 msg = nres.RemoteFailMsg()
3814 raise errors.OpExecError("Cannot disconnect disks node %s,"
3815 " error %s" % (node, msg))
3817 def _GoReconnect(self, multimaster):
3818 """Reconnect to the network.
3824 msg = "single-master"
3825 self.feedback_fn("* changing disks into %s mode" % msg)
3826 result = self.rpc.call_drbd_attach_net(self.all_nodes, self.nodes_ip,
3827 self.instance.disks,
3828 self.instance.name, multimaster)
3829 for node, nres in result.items():
3830 msg = nres.RemoteFailMsg()
3832 raise errors.OpExecError("Cannot change disks config on node %s,"
3833 " error: %s" % (node, msg))
3835 def _ExecCleanup(self):
3836 """Try to cleanup after a failed migration.
3838 The cleanup is done by:
3839 - check that the instance is running only on one node
3840 (and update the config if needed)
3841 - change disks on its secondary node to secondary
3842 - wait until disks are fully synchronized
3843 - disconnect from the network
3844 - change disks into single-master mode
3845 - wait again until disks are fully synchronized
3848 instance = self.instance
3849 target_node = self.target_node
3850 source_node = self.source_node
3852 # check running on only one node
3853 self.feedback_fn("* checking where the instance actually runs"
3854 " (if this hangs, the hypervisor might be in"
3856 ins_l = self.rpc.call_instance_list(self.all_nodes, [instance.hypervisor])
3857 for node, result in ins_l.items():
3859 if not isinstance(result.data, list):
3860 raise errors.OpExecError("Can't contact node '%s'" % node)
3862 runningon_source = instance.name in ins_l[source_node].data
3863 runningon_target = instance.name in ins_l[target_node].data
3865 if runningon_source and runningon_target:
3866 raise errors.OpExecError("Instance seems to be running on two nodes,"
3867 " or the hypervisor is confused. You will have"
3868 " to ensure manually that it runs only on one"
3869 " and restart this operation.")
3871 if not (runningon_source or runningon_target):
3872 raise errors.OpExecError("Instance does not seem to be running at all."
3873 " In this case, it's safer to repair by"
3874 " running 'gnt-instance stop' to ensure disk"
3875 " shutdown, and then restarting it.")
3877 if runningon_target:
3878 # the migration has actually succeeded, we need to update the config
3879 self.feedback_fn("* instance running on secondary node (%s),"
3880 " updating config" % target_node)
3881 instance.primary_node = target_node
3882 self.cfg.Update(instance)
3883 demoted_node = source_node
3885 self.feedback_fn("* instance confirmed to be running on its"
3886 " primary node (%s)" % source_node)
3887 demoted_node = target_node
3889 self._EnsureSecondary(demoted_node)
3891 self._WaitUntilSync()
3892 except errors.OpExecError:
3893 # we ignore here errors, since if the device is standalone, it
3894 # won't be able to sync
3896 self._GoStandalone()
3897 self._GoReconnect(False)
3898 self._WaitUntilSync()
3900 self.feedback_fn("* done")
3902 def _RevertDiskStatus(self):
3903 """Try to revert the disk status after a failed migration.
3906 target_node = self.target_node
3908 self._EnsureSecondary(target_node)
3909 self._GoStandalone()
3910 self._GoReconnect(False)
3911 self._WaitUntilSync()
3912 except errors.OpExecError, err:
3913 self.LogWarning("Migration failed and I can't reconnect the"
3914 " drives: error '%s'\n"
3915 "Please look and recover the instance status" %
3918 def _AbortMigration(self):
3919 """Call the hypervisor code to abort a started migration.
3922 instance = self.instance
3923 target_node = self.target_node
3924 migration_info = self.migration_info
3926 abort_result = self.rpc.call_finalize_migration(target_node,
3930 abort_msg = abort_result.RemoteFailMsg()
3932 logging.error("Aborting migration failed on target node %s: %s" %
3933 (target_node, abort_msg))
3934 # Don't raise an exception here, as we stil have to try to revert the
3935 # disk status, even if this step failed.
3937 def _ExecMigration(self):
3938 """Migrate an instance.
3940 The migrate is done by:
3941 - change the disks into dual-master mode
3942 - wait until disks are fully synchronized again
3943 - migrate the instance
3944 - change disks on the new secondary node (the old primary) to secondary
3945 - wait until disks are fully synchronized
3946 - change disks into single-master mode
3949 instance = self.instance
3950 target_node = self.target_node
3951 source_node = self.source_node
3953 self.feedback_fn("* checking disk consistency between source and target")
3954 for dev in instance.disks:
3955 if not _CheckDiskConsistency(self, dev, target_node, False):
3956 raise errors.OpExecError("Disk %s is degraded or not fully"
3957 " synchronized on target node,"
3958 " aborting migrate." % dev.iv_name)
3960 # First get the migration information from the remote node
3961 result = self.rpc.call_migration_info(source_node, instance)
3962 msg = result.RemoteFailMsg()
3964 log_err = ("Failed fetching source migration information from %s: %s" %
3966 logging.error(log_err)
3967 raise errors.OpExecError(log_err)
3969 self.migration_info = migration_info = result.payload
3971 # Then switch the disks to master/master mode
3972 self._EnsureSecondary(target_node)
3973 self._GoStandalone()
3974 self._GoReconnect(True)
3975 self._WaitUntilSync()
3977 self.feedback_fn("* preparing %s to accept the instance" % target_node)
3978 result = self.rpc.call_accept_instance(target_node,
3981 self.nodes_ip[target_node])
3983 msg = result.RemoteFailMsg()
3985 logging.error("Instance pre-migration failed, trying to revert"
3986 " disk status: %s", msg)
3987 self._AbortMigration()
3988 self._RevertDiskStatus()
3989 raise errors.OpExecError("Could not pre-migrate instance %s: %s" %
3990 (instance.name, msg))
3992 self.feedback_fn("* migrating instance to %s" % target_node)
3994 result = self.rpc.call_instance_migrate(source_node, instance,
3995 self.nodes_ip[target_node],
3997 msg = result.RemoteFailMsg()
3999 logging.error("Instance migration failed, trying to revert"
4000 " disk status: %s", msg)
4001 self._AbortMigration()
4002 self._RevertDiskStatus()
4003 raise errors.OpExecError("Could not migrate instance %s: %s" %
4004 (instance.name, msg))
4007 instance.primary_node = target_node
4008 # distribute new instance config to the other nodes
4009 self.cfg.Update(instance)
4011 result = self.rpc.call_finalize_migration(target_node,
4015 msg = result.RemoteFailMsg()
4017 logging.error("Instance migration succeeded, but finalization failed:"
4019 raise errors.OpExecError("Could not finalize instance migration: %s" %
4022 self._EnsureSecondary(source_node)
4023 self._WaitUntilSync()
4024 self._GoStandalone()
4025 self._GoReconnect(False)
4026 self._WaitUntilSync()
4028 self.feedback_fn("* done")
4030 def Exec(self, feedback_fn):
4031 """Perform the migration.
4034 self.feedback_fn = feedback_fn
4036 self.source_node = self.instance.primary_node
4037 self.target_node = self.instance.secondary_nodes[0]
4038 self.all_nodes = [self.source_node, self.target_node]
4040 self.source_node: self.cfg.GetNodeInfo(self.source_node).secondary_ip,
4041 self.target_node: self.cfg.GetNodeInfo(self.target_node).secondary_ip,
4044 return self._ExecCleanup()
4046 return self._ExecMigration()
4049 def _CreateBlockDev(lu, node, instance, device, force_create,
4051 """Create a tree of block devices on a given node.
4053 If this device type has to be created on secondaries, create it and
4056 If not, just recurse to children keeping the same 'force' value.
4058 @param lu: the lu on whose behalf we execute
4059 @param node: the node on which to create the device
4060 @type instance: L{objects.Instance}
4061 @param instance: the instance which owns the device
4062 @type device: L{objects.Disk}
4063 @param device: the device to create
4064 @type force_create: boolean
4065 @param force_create: whether to force creation of this device; this
4066 will be change to True whenever we find a device which has
4067 CreateOnSecondary() attribute
4068 @param info: the extra 'metadata' we should attach to the device
4069 (this will be represented as a LVM tag)
4070 @type force_open: boolean
4071 @param force_open: this parameter will be passes to the
4072 L{backend.BlockdevCreate} function where it specifies
4073 whether we run on primary or not, and it affects both
4074 the child assembly and the device own Open() execution
4077 if device.CreateOnSecondary():
4081 for child in device.children:
4082 _CreateBlockDev(lu, node, instance, child, force_create,
4085 if not force_create:
4088 _CreateSingleBlockDev(lu, node, instance, device, info, force_open)
4091 def _CreateSingleBlockDev(lu, node, instance, device, info, force_open):
4092 """Create a single block device on a given node.
4094 This will not recurse over children of the device, so they must be
4097 @param lu: the lu on whose behalf we execute
4098 @param node: the node on which to create the device
4099 @type instance: L{objects.Instance}
4100 @param instance: the instance which owns the device
4101 @type device: L{objects.Disk}
4102 @param device: the device to create
4103 @param info: the extra 'metadata' we should attach to the device
4104 (this will be represented as a LVM tag)
4105 @type force_open: boolean
4106 @param force_open: this parameter will be passes to the
4107 L{backend.BlockdevCreate} function where it specifies
4108 whether we run on primary or not, and it affects both
4109 the child assembly and the device own Open() execution
4112 lu.cfg.SetDiskID(device, node)
4113 result = lu.rpc.call_blockdev_create(node, device, device.size,
4114 instance.name, force_open, info)
4115 msg = result.RemoteFailMsg()
4117 raise errors.OpExecError("Can't create block device %s on"
4118 " node %s for instance %s: %s" %
4119 (device, node, instance.name, msg))
4120 if device.physical_id is None:
4121 device.physical_id = result.payload
4124 def _GenerateUniqueNames(lu, exts):
4125 """Generate a suitable LV name.
4127 This will generate a logical volume name for the given instance.
4132 new_id = lu.cfg.GenerateUniqueID()
4133 results.append("%s%s" % (new_id, val))
4137 def _GenerateDRBD8Branch(lu, primary, secondary, size, names, iv_name,
4139 """Generate a drbd8 device complete with its children.
4142 port = lu.cfg.AllocatePort()
4143 vgname = lu.cfg.GetVGName()
4144 shared_secret = lu.cfg.GenerateDRBDSecret()
4145 dev_data = objects.Disk(dev_type=constants.LD_LV, size=size,
4146 logical_id=(vgname, names[0]))
4147 dev_meta = objects.Disk(dev_type=constants.LD_LV, size=128,
4148 logical_id=(vgname, names[1]))
4149 drbd_dev = objects.Disk(dev_type=constants.LD_DRBD8, size=size,
4150 logical_id=(primary, secondary, port,
4153 children=[dev_data, dev_meta],
4158 def _GenerateDiskTemplate(lu, template_name,
4159 instance_name, primary_node,
4160 secondary_nodes, disk_info,
4161 file_storage_dir, file_driver,
4163 """Generate the entire disk layout for a given template type.
4166 #TODO: compute space requirements
4168 vgname = lu.cfg.GetVGName()
4169 disk_count = len(disk_info)
4171 if template_name == constants.DT_DISKLESS:
4173 elif template_name == constants.DT_PLAIN:
4174 if len(secondary_nodes) != 0:
4175 raise errors.ProgrammerError("Wrong template configuration")
4177 names = _GenerateUniqueNames(lu, [".disk%d" % i
4178 for i in range(disk_count)])
4179 for idx, disk in enumerate(disk_info):
4180 disk_index = idx + base_index
4181 disk_dev = objects.Disk(dev_type=constants.LD_LV, size=disk["size"],
4182 logical_id=(vgname, names[idx]),
4183 iv_name="disk/%d" % disk_index,
4185 disks.append(disk_dev)
4186 elif template_name == constants.DT_DRBD8:
4187 if len(secondary_nodes) != 1:
4188 raise errors.ProgrammerError("Wrong template configuration")
4189 remote_node = secondary_nodes[0]
4190 minors = lu.cfg.AllocateDRBDMinor(
4191 [primary_node, remote_node] * len(disk_info), instance_name)
4194 for lv_prefix in _GenerateUniqueNames(lu, [".disk%d" % i
4195 for i in range(disk_count)]):
4196 names.append(lv_prefix + "_data")
4197 names.append(lv_prefix + "_meta")
4198 for idx, disk in enumerate(disk_info):
4199 disk_index = idx + base_index
4200 disk_dev = _GenerateDRBD8Branch(lu, primary_node, remote_node,
4201 disk["size"], names[idx*2:idx*2+2],
4202 "disk/%d" % disk_index,
4203 minors[idx*2], minors[idx*2+1])
4204 disk_dev.mode = disk["mode"]
4205 disks.append(disk_dev)
4206 elif template_name == constants.DT_FILE:
4207 if len(secondary_nodes) != 0:
4208 raise errors.ProgrammerError("Wrong template configuration")
4210 for idx, disk in enumerate(disk_info):
4211 disk_index = idx + base_index
4212 disk_dev = objects.Disk(dev_type=constants.LD_FILE, size=disk["size"],
4213 iv_name="disk/%d" % disk_index,
4214 logical_id=(file_driver,
4215 "%s/disk%d" % (file_storage_dir,
4218 disks.append(disk_dev)
4220 raise errors.ProgrammerError("Invalid disk template '%s'" % template_name)
4224 def _GetInstanceInfoText(instance):
4225 """Compute that text that should be added to the disk's metadata.
4228 return "originstname+%s" % instance.name
4231 def _CreateDisks(lu, instance):
4232 """Create all disks for an instance.
4234 This abstracts away some work from AddInstance.
4236 @type lu: L{LogicalUnit}
4237 @param lu: the logical unit on whose behalf we execute
4238 @type instance: L{objects.Instance}
4239 @param instance: the instance whose disks we should create
4241 @return: the success of the creation
4244 info = _GetInstanceInfoText(instance)
4245 pnode = instance.primary_node
4247 if instance.disk_template == constants.DT_FILE:
4248 file_storage_dir = os.path.dirname(instance.disks[0].logical_id[1])
4249 result = lu.rpc.call_file_storage_dir_create(pnode, file_storage_dir)
4251 if result.failed or not result.data:
4252 raise errors.OpExecError("Could not connect to node '%s'" % pnode)
4254 if not result.data[0]:
4255 raise errors.OpExecError("Failed to create directory '%s'" %
4258 # Note: this needs to be kept in sync with adding of disks in
4259 # LUSetInstanceParams
4260 for device in instance.disks:
4261 logging.info("Creating volume %s for instance %s",
4262 device.iv_name, instance.name)
4264 for node in instance.all_nodes:
4265 f_create = node == pnode
4266 _CreateBlockDev(lu, node, instance, device, f_create, info, f_create)
4269 def _RemoveDisks(lu, instance):
4270 """Remove all disks for an instance.
4272 This abstracts away some work from `AddInstance()` and
4273 `RemoveInstance()`. Note that in case some of the devices couldn't
4274 be removed, the removal will continue with the other ones (compare
4275 with `_CreateDisks()`).
4277 @type lu: L{LogicalUnit}
4278 @param lu: the logical unit on whose behalf we execute
4279 @type instance: L{objects.Instance}
4280 @param instance: the instance whose disks we should remove
4282 @return: the success of the removal
4285 logging.info("Removing block devices for instance %s", instance.name)
4288 for device in instance.disks:
4289 for node, disk in device.ComputeNodeTree(instance.primary_node):
4290 lu.cfg.SetDiskID(disk, node)
4291 msg = lu.rpc.call_blockdev_remove(node, disk).RemoteFailMsg()
4293 lu.LogWarning("Could not remove block device %s on node %s,"
4294 " continuing anyway: %s", device.iv_name, node, msg)
4297 if instance.disk_template == constants.DT_FILE:
4298 file_storage_dir = os.path.dirname(instance.disks[0].logical_id[1])
4299 result = lu.rpc.call_file_storage_dir_remove(instance.primary_node,
4301 if result.failed or not result.data:
4302 logging.error("Could not remove directory '%s'", file_storage_dir)
4308 def _ComputeDiskSize(disk_template, disks):
4309 """Compute disk size requirements in the volume group
4312 # Required free disk space as a function of disk and swap space
4314 constants.DT_DISKLESS: None,
4315 constants.DT_PLAIN: sum(d["size"] for d in disks),
4316 # 128 MB are added for drbd metadata for each disk
4317 constants.DT_DRBD8: sum(d["size"] + 128 for d in disks),
4318 constants.DT_FILE: None,
4321 if disk_template not in req_size_dict:
4322 raise errors.ProgrammerError("Disk template '%s' size requirement"
4323 " is unknown" % disk_template)
4325 return req_size_dict[disk_template]
4328 def _CheckHVParams(lu, nodenames, hvname, hvparams):
4329 """Hypervisor parameter validation.
4331 This function abstract the hypervisor parameter validation to be
4332 used in both instance create and instance modify.
4334 @type lu: L{LogicalUnit}
4335 @param lu: the logical unit for which we check
4336 @type nodenames: list
4337 @param nodenames: the list of nodes on which we should check
4338 @type hvname: string
4339 @param hvname: the name of the hypervisor we should use
4340 @type hvparams: dict
4341 @param hvparams: the parameters which we need to check
4342 @raise errors.OpPrereqError: if the parameters are not valid
4345 hvinfo = lu.rpc.call_hypervisor_validate_params(nodenames,
4348 for node in nodenames:
4352 msg = info.RemoteFailMsg()
4354 raise errors.OpPrereqError("Hypervisor parameter validation"
4355 " failed on node %s: %s" % (node, msg))
4358 class LUCreateInstance(LogicalUnit):
4359 """Create an instance.
4362 HPATH = "instance-add"
4363 HTYPE = constants.HTYPE_INSTANCE
4364 _OP_REQP = ["instance_name", "disks", "disk_template",
4366 "wait_for_sync", "ip_check", "nics",
4367 "hvparams", "beparams"]
4370 def _ExpandNode(self, node):
4371 """Expands and checks one node name.
4374 node_full = self.cfg.ExpandNodeName(node)
4375 if node_full is None:
4376 raise errors.OpPrereqError("Unknown node %s" % node)
4379 def ExpandNames(self):
4380 """ExpandNames for CreateInstance.
4382 Figure out the right locks for instance creation.
4385 self.needed_locks = {}
4387 # set optional parameters to none if they don't exist
4388 for attr in ["pnode", "snode", "iallocator", "hypervisor"]:
4389 if not hasattr(self.op, attr):
4390 setattr(self.op, attr, None)
4392 # cheap checks, mostly valid constants given
4394 # verify creation mode
4395 if self.op.mode not in (constants.INSTANCE_CREATE,
4396 constants.INSTANCE_IMPORT):
4397 raise errors.OpPrereqError("Invalid instance creation mode '%s'" %
4400 # disk template and mirror node verification
4401 if self.op.disk_template not in constants.DISK_TEMPLATES:
4402 raise errors.OpPrereqError("Invalid disk template name")
4404 if self.op.hypervisor is None:
4405 self.op.hypervisor = self.cfg.GetHypervisorType()
4407 cluster = self.cfg.GetClusterInfo()
4408 enabled_hvs = cluster.enabled_hypervisors
4409 if self.op.hypervisor not in enabled_hvs:
4410 raise errors.OpPrereqError("Selected hypervisor (%s) not enabled in the"
4411 " cluster (%s)" % (self.op.hypervisor,
4412 ",".join(enabled_hvs)))
4414 # check hypervisor parameter syntax (locally)
4415 utils.ForceDictType(self.op.hvparams, constants.HVS_PARAMETER_TYPES)
4416 filled_hvp = objects.FillDict(cluster.hvparams[self.op.hypervisor],
4418 hv_type = hypervisor.GetHypervisor(self.op.hypervisor)
4419 hv_type.CheckParameterSyntax(filled_hvp)
4421 # fill and remember the beparams dict
4422 utils.ForceDictType(self.op.beparams, constants.BES_PARAMETER_TYPES)
4423 self.be_full = objects.FillDict(cluster.beparams[constants.PP_DEFAULT],
4426 #### instance parameters check
4428 # instance name verification
4429 hostname1 = utils.HostInfo(self.op.instance_name)
4430 self.op.instance_name = instance_name = hostname1.name
4432 # this is just a preventive check, but someone might still add this
4433 # instance in the meantime, and creation will fail at lock-add time
4434 if instance_name in self.cfg.GetInstanceList():
4435 raise errors.OpPrereqError("Instance '%s' is already in the cluster" %
4438 self.add_locks[locking.LEVEL_INSTANCE] = instance_name
4442 for nic in self.op.nics:
4443 # ip validity checks
4444 ip = nic.get("ip", None)
4445 if ip is None or ip.lower() == "none":
4447 elif ip.lower() == constants.VALUE_AUTO:
4448 nic_ip = hostname1.ip
4450 if not utils.IsValidIP(ip):
4451 raise errors.OpPrereqError("Given IP address '%s' doesn't look"
4452 " like a valid IP" % ip)
4455 # MAC address verification
4456 mac = nic.get("mac", constants.VALUE_AUTO)
4457 if mac not in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
4458 if not utils.IsValidMac(mac.lower()):
4459 raise errors.OpPrereqError("Invalid MAC address specified: %s" %
4461 # bridge verification
4462 bridge = nic.get("bridge", None)
4464 bridge = self.cfg.GetDefBridge()
4465 self.nics.append(objects.NIC(mac=mac, ip=nic_ip, bridge=bridge))
4467 # disk checks/pre-build
4469 for disk in self.op.disks:
4470 mode = disk.get("mode", constants.DISK_RDWR)
4471 if mode not in constants.DISK_ACCESS_SET:
4472 raise errors.OpPrereqError("Invalid disk access mode '%s'" %
4474 size = disk.get("size", None)
4476 raise errors.OpPrereqError("Missing disk size")
4480 raise errors.OpPrereqError("Invalid disk size '%s'" % size)
4481 self.disks.append({"size": size, "mode": mode})
4483 # used in CheckPrereq for ip ping check
4484 self.check_ip = hostname1.ip
4486 # file storage checks
4487 if (self.op.file_driver and
4488 not self.op.file_driver in constants.FILE_DRIVER):
4489 raise errors.OpPrereqError("Invalid file driver name '%s'" %
4490 self.op.file_driver)
4492 if self.op.file_storage_dir and os.path.isabs(self.op.file_storage_dir):
4493 raise errors.OpPrereqError("File storage directory path not absolute")
4495 ### Node/iallocator related checks
4496 if [self.op.iallocator, self.op.pnode].count(None) != 1:
4497 raise errors.OpPrereqError("One and only one of iallocator and primary"
4498 " node must be given")
4500 if self.op.iallocator:
4501 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
4503 self.op.pnode = self._ExpandNode(self.op.pnode)
4504 nodelist = [self.op.pnode]
4505 if self.op.snode is not None:
4506 self.op.snode = self._ExpandNode(self.op.snode)
4507 nodelist.append(self.op.snode)
4508 self.needed_locks[locking.LEVEL_NODE] = nodelist
4510 # in case of import lock the source node too
4511 if self.op.mode == constants.INSTANCE_IMPORT:
4512 src_node = getattr(self.op, "src_node", None)
4513 src_path = getattr(self.op, "src_path", None)
4515 if src_path is None:
4516 self.op.src_path = src_path = self.op.instance_name
4518 if src_node is None:
4519 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
4520 self.op.src_node = None
4521 if os.path.isabs(src_path):
4522 raise errors.OpPrereqError("Importing an instance from an absolute"
4523 " path requires a source node option.")
4525 self.op.src_node = src_node = self._ExpandNode(src_node)
4526 if self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET:
4527 self.needed_locks[locking.LEVEL_NODE].append(src_node)
4528 if not os.path.isabs(src_path):
4529 self.op.src_path = src_path = \
4530 os.path.join(constants.EXPORT_DIR, src_path)
4532 else: # INSTANCE_CREATE
4533 if getattr(self.op, "os_type", None) is None:
4534 raise errors.OpPrereqError("No guest OS specified")
4536 def _RunAllocator(self):
4537 """Run the allocator based on input opcode.
4540 nics = [n.ToDict() for n in self.nics]
4541 ial = IAllocator(self,
4542 mode=constants.IALLOCATOR_MODE_ALLOC,
4543 name=self.op.instance_name,
4544 disk_template=self.op.disk_template,
4547 vcpus=self.be_full[constants.BE_VCPUS],
4548 mem_size=self.be_full[constants.BE_MEMORY],
4551 hypervisor=self.op.hypervisor,
4554 ial.Run(self.op.iallocator)
4557 raise errors.OpPrereqError("Can't compute nodes using"
4558 " iallocator '%s': %s" % (self.op.iallocator,
4560 if len(ial.nodes) != ial.required_nodes:
4561 raise errors.OpPrereqError("iallocator '%s' returned invalid number"
4562 " of nodes (%s), required %s" %
4563 (self.op.iallocator, len(ial.nodes),
4564 ial.required_nodes))
4565 self.op.pnode = ial.nodes[0]
4566 self.LogInfo("Selected nodes for instance %s via iallocator %s: %s",
4567 self.op.instance_name, self.op.iallocator,
4568 ", ".join(ial.nodes))
4569 if ial.required_nodes == 2:
4570 self.op.snode = ial.nodes[1]
4572 def BuildHooksEnv(self):
4575 This runs on master, primary and secondary nodes of the instance.
4579 "ADD_MODE": self.op.mode,
4581 if self.op.mode == constants.INSTANCE_IMPORT:
4582 env["SRC_NODE"] = self.op.src_node
4583 env["SRC_PATH"] = self.op.src_path
4584 env["SRC_IMAGES"] = self.src_images
4586 env.update(_BuildInstanceHookEnv(
4587 name=self.op.instance_name,
4588 primary_node=self.op.pnode,
4589 secondary_nodes=self.secondaries,
4590 status=self.op.start,
4591 os_type=self.op.os_type,
4592 memory=self.be_full[constants.BE_MEMORY],
4593 vcpus=self.be_full[constants.BE_VCPUS],
4594 nics=[(n.ip, n.bridge, n.mac) for n in self.nics],
4595 disk_template=self.op.disk_template,
4596 disks=[(d["size"], d["mode"]) for d in self.disks],
4599 nl = ([self.cfg.GetMasterNode(), self.op.pnode] +
4604 def CheckPrereq(self):
4605 """Check prerequisites.
4608 if (not self.cfg.GetVGName() and
4609 self.op.disk_template not in constants.DTS_NOT_LVM):
4610 raise errors.OpPrereqError("Cluster does not support lvm-based"
4613 if self.op.mode == constants.INSTANCE_IMPORT:
4614 src_node = self.op.src_node
4615 src_path = self.op.src_path
4617 if src_node is None:
4618 exp_list = self.rpc.call_export_list(
4619 self.acquired_locks[locking.LEVEL_NODE])
4621 for node in exp_list:
4622 if not exp_list[node].failed and src_path in exp_list[node].data:
4624 self.op.src_node = src_node = node
4625 self.op.src_path = src_path = os.path.join(constants.EXPORT_DIR,
4629 raise errors.OpPrereqError("No export found for relative path %s" %
4632 _CheckNodeOnline(self, src_node)
4633 result = self.rpc.call_export_info(src_node, src_path)
4636 raise errors.OpPrereqError("No export found in dir %s" % src_path)
4638 export_info = result.data
4639 if not export_info.has_section(constants.INISECT_EXP):
4640 raise errors.ProgrammerError("Corrupted export config")
4642 ei_version = export_info.get(constants.INISECT_EXP, 'version')
4643 if (int(ei_version) != constants.EXPORT_VERSION):
4644 raise errors.OpPrereqError("Wrong export version %s (wanted %d)" %
4645 (ei_version, constants.EXPORT_VERSION))
4647 # Check that the new instance doesn't have less disks than the export
4648 instance_disks = len(self.disks)
4649 export_disks = export_info.getint(constants.INISECT_INS, 'disk_count')
4650 if instance_disks < export_disks:
4651 raise errors.OpPrereqError("Not enough disks to import."
4652 " (instance: %d, export: %d)" %
4653 (instance_disks, export_disks))
4655 self.op.os_type = export_info.get(constants.INISECT_EXP, 'os')
4657 for idx in range(export_disks):
4658 option = 'disk%d_dump' % idx
4659 if export_info.has_option(constants.INISECT_INS, option):
4660 # FIXME: are the old os-es, disk sizes, etc. useful?
4661 export_name = export_info.get(constants.INISECT_INS, option)
4662 image = os.path.join(src_path, export_name)
4663 disk_images.append(image)
4665 disk_images.append(False)
4667 self.src_images = disk_images
4669 old_name = export_info.get(constants.INISECT_INS, 'name')
4670 # FIXME: int() here could throw a ValueError on broken exports
4671 exp_nic_count = int(export_info.get(constants.INISECT_INS, 'nic_count'))
4672 if self.op.instance_name == old_name:
4673 for idx, nic in enumerate(self.nics):
4674 if nic.mac == constants.VALUE_AUTO and exp_nic_count >= idx:
4675 nic_mac_ini = 'nic%d_mac' % idx
4676 nic.mac = export_info.get(constants.INISECT_INS, nic_mac_ini)
4678 # ENDIF: self.op.mode == constants.INSTANCE_IMPORT
4679 # ip ping checks (we use the same ip that was resolved in ExpandNames)
4680 if self.op.start and not self.op.ip_check:
4681 raise errors.OpPrereqError("Cannot ignore IP address conflicts when"
4682 " adding an instance in start mode")
4684 if self.op.ip_check:
4685 if utils.TcpPing(self.check_ip, constants.DEFAULT_NODED_PORT):
4686 raise errors.OpPrereqError("IP %s of instance %s already in use" %
4687 (self.check_ip, self.op.instance_name))
4689 #### mac address generation
4690 # By generating here the mac address both the allocator and the hooks get
4691 # the real final mac address rather than the 'auto' or 'generate' value.
4692 # There is a race condition between the generation and the instance object
4693 # creation, which means that we know the mac is valid now, but we're not
4694 # sure it will be when we actually add the instance. If things go bad
4695 # adding the instance will abort because of a duplicate mac, and the
4696 # creation job will fail.
4697 for nic in self.nics:
4698 if nic.mac in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
4699 nic.mac = self.cfg.GenerateMAC()
4703 if self.op.iallocator is not None:
4704 self._RunAllocator()
4706 #### node related checks
4708 # check primary node
4709 self.pnode = pnode = self.cfg.GetNodeInfo(self.op.pnode)
4710 assert self.pnode is not None, \
4711 "Cannot retrieve locked node %s" % self.op.pnode
4713 raise errors.OpPrereqError("Cannot use offline primary node '%s'" %
4716 raise errors.OpPrereqError("Cannot use drained primary node '%s'" %
4719 self.secondaries = []
4721 # mirror node verification
4722 if self.op.disk_template in constants.DTS_NET_MIRROR:
4723 if self.op.snode is None:
4724 raise errors.OpPrereqError("The networked disk templates need"
4726 if self.op.snode == pnode.name:
4727 raise errors.OpPrereqError("The secondary node cannot be"
4728 " the primary node.")
4729 _CheckNodeOnline(self, self.op.snode)
4730 _CheckNodeNotDrained(self, self.op.snode)
4731 self.secondaries.append(self.op.snode)
4733 nodenames = [pnode.name] + self.secondaries
4735 req_size = _ComputeDiskSize(self.op.disk_template,
4738 # Check lv size requirements
4739 if req_size is not None:
4740 nodeinfo = self.rpc.call_node_info(nodenames, self.cfg.GetVGName(),
4742 for node in nodenames:
4743 info = nodeinfo[node]
4747 raise errors.OpPrereqError("Cannot get current information"
4748 " from node '%s'" % node)
4749 vg_free = info.get('vg_free', None)
4750 if not isinstance(vg_free, int):
4751 raise errors.OpPrereqError("Can't compute free disk space on"
4753 if req_size > info['vg_free']:
4754 raise errors.OpPrereqError("Not enough disk space on target node %s."
4755 " %d MB available, %d MB required" %
4756 (node, info['vg_free'], req_size))
4758 _CheckHVParams(self, nodenames, self.op.hypervisor, self.op.hvparams)
4761 result = self.rpc.call_os_get(pnode.name, self.op.os_type)
4763 if not isinstance(result.data, objects.OS):
4764 raise errors.OpPrereqError("OS '%s' not in supported os list for"
4765 " primary node" % self.op.os_type)
4767 # bridge check on primary node
4768 bridges = [n.bridge for n in self.nics]
4769 result = self.rpc.call_bridges_exist(self.pnode.name, bridges)
4772 raise errors.OpPrereqError("One of the target bridges '%s' does not"
4773 " exist on destination node '%s'" %
4774 (",".join(bridges), pnode.name))
4776 # memory check on primary node
4778 _CheckNodeFreeMemory(self, self.pnode.name,
4779 "creating instance %s" % self.op.instance_name,
4780 self.be_full[constants.BE_MEMORY],
4783 def Exec(self, feedback_fn):
4784 """Create and add the instance to the cluster.
4787 instance = self.op.instance_name
4788 pnode_name = self.pnode.name
4790 ht_kind = self.op.hypervisor
4791 if ht_kind in constants.HTS_REQ_PORT:
4792 network_port = self.cfg.AllocatePort()
4796 ##if self.op.vnc_bind_address is None:
4797 ## self.op.vnc_bind_address = constants.VNC_DEFAULT_BIND_ADDRESS
4799 # this is needed because os.path.join does not accept None arguments
4800 if self.op.file_storage_dir is None:
4801 string_file_storage_dir = ""
4803 string_file_storage_dir = self.op.file_storage_dir
4805 # build the full file storage dir path
4806 file_storage_dir = os.path.normpath(os.path.join(
4807 self.cfg.GetFileStorageDir(),
4808 string_file_storage_dir, instance))
4811 disks = _GenerateDiskTemplate(self,
4812 self.op.disk_template,
4813 instance, pnode_name,
4817 self.op.file_driver,
4820 iobj = objects.Instance(name=instance, os=self.op.os_type,
4821 primary_node=pnode_name,
4822 nics=self.nics, disks=disks,
4823 disk_template=self.op.disk_template,
4825 network_port=network_port,
4826 beparams=self.op.beparams,
4827 hvparams=self.op.hvparams,
4828 hypervisor=self.op.hypervisor,
4831 feedback_fn("* creating instance disks...")
4833 _CreateDisks(self, iobj)
4834 except errors.OpExecError:
4835 self.LogWarning("Device creation failed, reverting...")
4837 _RemoveDisks(self, iobj)
4839 self.cfg.ReleaseDRBDMinors(instance)
4842 feedback_fn("adding instance %s to cluster config" % instance)
4844 self.cfg.AddInstance(iobj)
4845 # Declare that we don't want to remove the instance lock anymore, as we've
4846 # added the instance to the config
4847 del self.remove_locks[locking.LEVEL_INSTANCE]
4848 # Unlock all the nodes
4849 if self.op.mode == constants.INSTANCE_IMPORT:
4850 nodes_keep = [self.op.src_node]
4851 nodes_release = [node for node in self.acquired_locks[locking.LEVEL_NODE]
4852 if node != self.op.src_node]
4853 self.context.glm.release(locking.LEVEL_NODE, nodes_release)
4854 self.acquired_locks[locking.LEVEL_NODE] = nodes_keep
4856 self.context.glm.release(locking.LEVEL_NODE)
4857 del self.acquired_locks[locking.LEVEL_NODE]
4859 if self.op.wait_for_sync:
4860 disk_abort = not _WaitForSync(self, iobj)
4861 elif iobj.disk_template in constants.DTS_NET_MIRROR:
4862 # make sure the disks are not degraded (still sync-ing is ok)
4864 feedback_fn("* checking mirrors status")
4865 disk_abort = not _WaitForSync(self, iobj, oneshot=True)
4870 _RemoveDisks(self, iobj)
4871 self.cfg.RemoveInstance(iobj.name)
4872 # Make sure the instance lock gets removed
4873 self.remove_locks[locking.LEVEL_INSTANCE] = iobj.name
4874 raise errors.OpExecError("There are some degraded disks for"
4877 feedback_fn("creating os for instance %s on node %s" %
4878 (instance, pnode_name))
4880 if iobj.disk_template != constants.DT_DISKLESS:
4881 if self.op.mode == constants.INSTANCE_CREATE:
4882 feedback_fn("* running the instance OS create scripts...")
4883 result = self.rpc.call_instance_os_add(pnode_name, iobj, False)
4884 msg = result.RemoteFailMsg()
4886 raise errors.OpExecError("Could not add os for instance %s"
4888 (instance, pnode_name, msg))
4890 elif self.op.mode == constants.INSTANCE_IMPORT:
4891 feedback_fn("* running the instance OS import scripts...")
4892 src_node = self.op.src_node
4893 src_images = self.src_images
4894 cluster_name = self.cfg.GetClusterName()
4895 import_result = self.rpc.call_instance_os_import(pnode_name, iobj,
4896 src_node, src_images,
4898 import_result.Raise()
4899 for idx, result in enumerate(import_result.data):
4901 self.LogWarning("Could not import the image %s for instance"
4902 " %s, disk %d, on node %s" %
4903 (src_images[idx], instance, idx, pnode_name))
4905 # also checked in the prereq part
4906 raise errors.ProgrammerError("Unknown OS initialization mode '%s'"
4910 iobj.admin_up = True
4911 self.cfg.Update(iobj)
4912 logging.info("Starting instance %s on node %s", instance, pnode_name)
4913 feedback_fn("* starting instance...")
4914 result = self.rpc.call_instance_start(pnode_name, iobj, None, None)
4915 msg = result.RemoteFailMsg()
4917 raise errors.OpExecError("Could not start instance: %s" % msg)
4920 class LUConnectConsole(NoHooksLU):
4921 """Connect to an instance's console.
4923 This is somewhat special in that it returns the command line that
4924 you need to run on the master node in order to connect to the
4928 _OP_REQP = ["instance_name"]
4931 def ExpandNames(self):
4932 self._ExpandAndLockInstance()
4934 def CheckPrereq(self):
4935 """Check prerequisites.
4937 This checks that the instance is in the cluster.
4940 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
4941 assert self.instance is not None, \
4942 "Cannot retrieve locked instance %s" % self.op.instance_name
4943 _CheckNodeOnline(self, self.instance.primary_node)
4945 def Exec(self, feedback_fn):
4946 """Connect to the console of an instance
4949 instance = self.instance
4950 node = instance.primary_node
4952 node_insts = self.rpc.call_instance_list([node],
4953 [instance.hypervisor])[node]
4956 if instance.name not in node_insts.data:
4957 raise errors.OpExecError("Instance %s is not running." % instance.name)
4959 logging.debug("Connecting to console of %s on %s", instance.name, node)
4961 hyper = hypervisor.GetHypervisor(instance.hypervisor)
4962 cluster = self.cfg.GetClusterInfo()
4963 # beparams and hvparams are passed separately, to avoid editing the
4964 # instance and then saving the defaults in the instance itself.
4965 hvparams = cluster.FillHV(instance)
4966 beparams = cluster.FillBE(instance)
4967 console_cmd = hyper.GetShellCommandForConsole(instance, hvparams, beparams)
4970 return self.ssh.BuildCmd(node, "root", console_cmd, batch=True, tty=True)
4973 class LUReplaceDisks(LogicalUnit):
4974 """Replace the disks of an instance.
4977 HPATH = "mirrors-replace"
4978 HTYPE = constants.HTYPE_INSTANCE
4979 _OP_REQP = ["instance_name", "mode", "disks"]
4982 def CheckArguments(self):
4983 if not hasattr(self.op, "remote_node"):
4984 self.op.remote_node = None
4985 if not hasattr(self.op, "iallocator"):
4986 self.op.iallocator = None
4988 # check for valid parameter combination
4989 cnt = [self.op.remote_node, self.op.iallocator].count(None)
4990 if self.op.mode == constants.REPLACE_DISK_CHG:
4992 raise errors.OpPrereqError("When changing the secondary either an"
4993 " iallocator script must be used or the"
4996 raise errors.OpPrereqError("Give either the iallocator or the new"
4997 " secondary, not both")
4998 else: # not replacing the secondary
5000 raise errors.OpPrereqError("The iallocator and new node options can"
5001 " be used only when changing the"
5004 def ExpandNames(self):
5005 self._ExpandAndLockInstance()
5007 if self.op.iallocator is not None:
5008 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
5009 elif self.op.remote_node is not None:
5010 remote_node = self.cfg.ExpandNodeName(self.op.remote_node)
5011 if remote_node is None:
5012 raise errors.OpPrereqError("Node '%s' not known" %
5013 self.op.remote_node)
5014 self.op.remote_node = remote_node
5015 # Warning: do not remove the locking of the new secondary here
5016 # unless DRBD8.AddChildren is changed to work in parallel;
5017 # currently it doesn't since parallel invocations of
5018 # FindUnusedMinor will conflict
5019 self.needed_locks[locking.LEVEL_NODE] = [remote_node]
5020 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_APPEND
5022 self.needed_locks[locking.LEVEL_NODE] = []
5023 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5025 def DeclareLocks(self, level):
5026 # If we're not already locking all nodes in the set we have to declare the
5027 # instance's primary/secondary nodes.
5028 if (level == locking.LEVEL_NODE and
5029 self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET):
5030 self._LockInstancesNodes()
5032 def _RunAllocator(self):
5033 """Compute a new secondary node using an IAllocator.
5036 ial = IAllocator(self,
5037 mode=constants.IALLOCATOR_MODE_RELOC,
5038 name=self.op.instance_name,
5039 relocate_from=[self.sec_node])
5041 ial.Run(self.op.iallocator)
5044 raise errors.OpPrereqError("Can't compute nodes using"
5045 " iallocator '%s': %s" % (self.op.iallocator,
5047 if len(ial.nodes) != ial.required_nodes:
5048 raise errors.OpPrereqError("iallocator '%s' returned invalid number"
5049 " of nodes (%s), required %s" %
5050 (len(ial.nodes), ial.required_nodes))
5051 self.op.remote_node = ial.nodes[0]
5052 self.LogInfo("Selected new secondary for the instance: %s",
5053 self.op.remote_node)
5055 def BuildHooksEnv(self):
5058 This runs on the master, the primary and all the secondaries.
5062 "MODE": self.op.mode,
5063 "NEW_SECONDARY": self.op.remote_node,
5064 "OLD_SECONDARY": self.instance.secondary_nodes[0],
5066 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
5068 self.cfg.GetMasterNode(),
5069 self.instance.primary_node,
5071 if self.op.remote_node is not None:
5072 nl.append(self.op.remote_node)
5075 def CheckPrereq(self):
5076 """Check prerequisites.
5078 This checks that the instance is in the cluster.
5081 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5082 assert instance is not None, \
5083 "Cannot retrieve locked instance %s" % self.op.instance_name
5084 self.instance = instance
5086 if instance.disk_template != constants.DT_DRBD8:
5087 raise errors.OpPrereqError("Can only run replace disks for DRBD8-based"
5090 if len(instance.secondary_nodes) != 1:
5091 raise errors.OpPrereqError("The instance has a strange layout,"
5092 " expected one secondary but found %d" %
5093 len(instance.secondary_nodes))
5095 self.sec_node = instance.secondary_nodes[0]
5097 if self.op.iallocator is not None:
5098 self._RunAllocator()
5100 remote_node = self.op.remote_node
5101 if remote_node is not None:
5102 self.remote_node_info = self.cfg.GetNodeInfo(remote_node)
5103 assert self.remote_node_info is not None, \
5104 "Cannot retrieve locked node %s" % remote_node
5106 self.remote_node_info = None
5107 if remote_node == instance.primary_node:
5108 raise errors.OpPrereqError("The specified node is the primary node of"
5110 elif remote_node == self.sec_node:
5111 raise errors.OpPrereqError("The specified node is already the"
5112 " secondary node of the instance.")
5114 if self.op.mode == constants.REPLACE_DISK_PRI:
5115 n1 = self.tgt_node = instance.primary_node
5116 n2 = self.oth_node = self.sec_node
5117 elif self.op.mode == constants.REPLACE_DISK_SEC:
5118 n1 = self.tgt_node = self.sec_node
5119 n2 = self.oth_node = instance.primary_node
5120 elif self.op.mode == constants.REPLACE_DISK_CHG:
5121 n1 = self.new_node = remote_node
5122 n2 = self.oth_node = instance.primary_node
5123 self.tgt_node = self.sec_node
5124 _CheckNodeNotDrained(self, remote_node)
5126 raise errors.ProgrammerError("Unhandled disk replace mode")
5128 _CheckNodeOnline(self, n1)
5129 _CheckNodeOnline(self, n2)
5131 if not self.op.disks:
5132 self.op.disks = range(len(instance.disks))
5134 for disk_idx in self.op.disks:
5135 instance.FindDisk(disk_idx)
5137 def _ExecD8DiskOnly(self, feedback_fn):
5138 """Replace a disk on the primary or secondary for dbrd8.
5140 The algorithm for replace is quite complicated:
5142 1. for each disk to be replaced:
5144 1. create new LVs on the target node with unique names
5145 1. detach old LVs from the drbd device
5146 1. rename old LVs to name_replaced.<time_t>
5147 1. rename new LVs to old LVs
5148 1. attach the new LVs (with the old names now) to the drbd device
5150 1. wait for sync across all devices
5152 1. for each modified disk:
5154 1. remove old LVs (which have the name name_replaces.<time_t>)
5156 Failures are not very well handled.
5160 warning, info = (self.proc.LogWarning, self.proc.LogInfo)
5161 instance = self.instance
5163 vgname = self.cfg.GetVGName()
5166 tgt_node = self.tgt_node
5167 oth_node = self.oth_node
5169 # Step: check device activation
5170 self.proc.LogStep(1, steps_total, "check device existence")
5171 info("checking volume groups")
5172 my_vg = cfg.GetVGName()
5173 results = self.rpc.call_vg_list([oth_node, tgt_node])
5175 raise errors.OpExecError("Can't list volume groups on the nodes")
5176 for node in oth_node, tgt_node:
5178 if res.failed or not res.data or my_vg not in res.data:
5179 raise errors.OpExecError("Volume group '%s' not found on %s" %
5181 for idx, dev in enumerate(instance.disks):
5182 if idx not in self.op.disks:
5184 for node in tgt_node, oth_node:
5185 info("checking disk/%d on %s" % (idx, node))
5186 cfg.SetDiskID(dev, node)
5187 result = self.rpc.call_blockdev_find(node, dev)
5188 msg = result.RemoteFailMsg()
5189 if not msg and not result.payload:
5190 msg = "disk not found"
5192 raise errors.OpExecError("Can't find disk/%d on node %s: %s" %
5195 # Step: check other node consistency
5196 self.proc.LogStep(2, steps_total, "check peer consistency")
5197 for idx, dev in enumerate(instance.disks):
5198 if idx not in self.op.disks:
5200 info("checking disk/%d consistency on %s" % (idx, oth_node))
5201 if not _CheckDiskConsistency(self, dev, oth_node,
5202 oth_node==instance.primary_node):
5203 raise errors.OpExecError("Peer node (%s) has degraded storage, unsafe"
5204 " to replace disks on this node (%s)" %
5205 (oth_node, tgt_node))
5207 # Step: create new storage
5208 self.proc.LogStep(3, steps_total, "allocate new storage")
5209 for idx, dev in enumerate(instance.disks):
5210 if idx not in self.op.disks:
5213 cfg.SetDiskID(dev, tgt_node)
5214 lv_names = [".disk%d_%s" % (idx, suf)
5215 for suf in ["data", "meta"]]
5216 names = _GenerateUniqueNames(self, lv_names)
5217 lv_data = objects.Disk(dev_type=constants.LD_LV, size=size,
5218 logical_id=(vgname, names[0]))
5219 lv_meta = objects.Disk(dev_type=constants.LD_LV, size=128,
5220 logical_id=(vgname, names[1]))
5221 new_lvs = [lv_data, lv_meta]
5222 old_lvs = dev.children
5223 iv_names[dev.iv_name] = (dev, old_lvs, new_lvs)
5224 info("creating new local storage on %s for %s" %
5225 (tgt_node, dev.iv_name))
5226 # we pass force_create=True to force the LVM creation
5227 for new_lv in new_lvs:
5228 _CreateBlockDev(self, tgt_node, instance, new_lv, True,
5229 _GetInstanceInfoText(instance), False)
5231 # Step: for each lv, detach+rename*2+attach
5232 self.proc.LogStep(4, steps_total, "change drbd configuration")
5233 for dev, old_lvs, new_lvs in iv_names.itervalues():
5234 info("detaching %s drbd from local storage" % dev.iv_name)
5235 result = self.rpc.call_blockdev_removechildren(tgt_node, dev, old_lvs)
5236 msg = result.RemoteFailMsg()
5238 raise errors.OpExecError("Can't detach drbd from local storage on node"
5239 " %s for device %s: %s" %
5240 (tgt_node, dev.iv_name, msg))
5242 #cfg.Update(instance)
5244 # ok, we created the new LVs, so now we know we have the needed
5245 # storage; as such, we proceed on the target node to rename
5246 # old_lv to _old, and new_lv to old_lv; note that we rename LVs
5247 # using the assumption that logical_id == physical_id (which in
5248 # turn is the unique_id on that node)
5250 # FIXME(iustin): use a better name for the replaced LVs
5251 temp_suffix = int(time.time())
5252 ren_fn = lambda d, suff: (d.physical_id[0],
5253 d.physical_id[1] + "_replaced-%s" % suff)
5254 # build the rename list based on what LVs exist on the node
5256 for to_ren in old_lvs:
5257 result = self.rpc.call_blockdev_find(tgt_node, to_ren)
5258 if not result.RemoteFailMsg() and result.payload:
5260 rlist.append((to_ren, ren_fn(to_ren, temp_suffix)))
5262 info("renaming the old LVs on the target node")
5263 result = self.rpc.call_blockdev_rename(tgt_node, rlist)
5264 msg = result.RemoteFailMsg()
5266 raise errors.OpExecError("Can't rename old LVs on node %s: %s" %
5268 # now we rename the new LVs to the old LVs
5269 info("renaming the new LVs on the target node")
5270 rlist = [(new, old.physical_id) for old, new in zip(old_lvs, new_lvs)]
5271 result = self.rpc.call_blockdev_rename(tgt_node, rlist)
5272 msg = result.RemoteFailMsg()
5274 raise errors.OpExecError("Can't rename new LVs on node %s: %s" %
5277 for old, new in zip(old_lvs, new_lvs):
5278 new.logical_id = old.logical_id
5279 cfg.SetDiskID(new, tgt_node)
5281 for disk in old_lvs:
5282 disk.logical_id = ren_fn(disk, temp_suffix)
5283 cfg.SetDiskID(disk, tgt_node)
5285 # now that the new lvs have the old name, we can add them to the device
5286 info("adding new mirror component on %s" % tgt_node)
5287 result = self.rpc.call_blockdev_addchildren(tgt_node, dev, new_lvs)
5288 msg = result.RemoteFailMsg()
5290 for new_lv in new_lvs:
5291 msg = self.rpc.call_blockdev_remove(tgt_node, new_lv).RemoteFailMsg()
5293 warning("Can't rollback device %s: %s", dev, msg,
5294 hint="cleanup manually the unused logical volumes")
5295 raise errors.OpExecError("Can't add local storage to drbd: %s" % msg)
5297 dev.children = new_lvs
5298 cfg.Update(instance)
5300 # Step: wait for sync
5302 # this can fail as the old devices are degraded and _WaitForSync
5303 # does a combined result over all disks, so we don't check its
5305 self.proc.LogStep(5, steps_total, "sync devices")
5306 _WaitForSync(self, instance, unlock=True)
5308 # so check manually all the devices
5309 for name, (dev, old_lvs, new_lvs) in iv_names.iteritems():
5310 cfg.SetDiskID(dev, instance.primary_node)
5311 result = self.rpc.call_blockdev_find(instance.primary_node, dev)
5312 msg = result.RemoteFailMsg()
5313 if not msg and not result.payload:
5314 msg = "disk not found"
5316 raise errors.OpExecError("Can't find DRBD device %s: %s" %
5318 if result.payload[5]:
5319 raise errors.OpExecError("DRBD device %s is degraded!" % name)
5321 # Step: remove old storage
5322 self.proc.LogStep(6, steps_total, "removing old storage")
5323 for name, (dev, old_lvs, new_lvs) in iv_names.iteritems():
5324 info("remove logical volumes for %s" % name)
5326 cfg.SetDiskID(lv, tgt_node)
5327 msg = self.rpc.call_blockdev_remove(tgt_node, lv).RemoteFailMsg()
5329 warning("Can't remove old LV: %s" % msg,
5330 hint="manually remove unused LVs")
5333 def _ExecD8Secondary(self, feedback_fn):
5334 """Replace the secondary node for drbd8.
5336 The algorithm for replace is quite complicated:
5337 - for all disks of the instance:
5338 - create new LVs on the new node with same names
5339 - shutdown the drbd device on the old secondary
5340 - disconnect the drbd network on the primary
5341 - create the drbd device on the new secondary
5342 - network attach the drbd on the primary, using an artifice:
5343 the drbd code for Attach() will connect to the network if it
5344 finds a device which is connected to the good local disks but
5346 - wait for sync across all devices
5347 - remove all disks from the old secondary
5349 Failures are not very well handled.
5353 warning, info = (self.proc.LogWarning, self.proc.LogInfo)
5354 instance = self.instance
5358 old_node = self.tgt_node
5359 new_node = self.new_node
5360 pri_node = instance.primary_node
5362 old_node: self.cfg.GetNodeInfo(old_node).secondary_ip,
5363 new_node: self.cfg.GetNodeInfo(new_node).secondary_ip,
5364 pri_node: self.cfg.GetNodeInfo(pri_node).secondary_ip,
5367 # Step: check device activation
5368 self.proc.LogStep(1, steps_total, "check device existence")
5369 info("checking volume groups")
5370 my_vg = cfg.GetVGName()
5371 results = self.rpc.call_vg_list([pri_node, new_node])
5372 for node in pri_node, new_node:
5374 if res.failed or not res.data or my_vg not in res.data:
5375 raise errors.OpExecError("Volume group '%s' not found on %s" %
5377 for idx, dev in enumerate(instance.disks):
5378 if idx not in self.op.disks:
5380 info("checking disk/%d on %s" % (idx, pri_node))
5381 cfg.SetDiskID(dev, pri_node)
5382 result = self.rpc.call_blockdev_find(pri_node, dev)
5383 msg = result.RemoteFailMsg()
5384 if not msg and not result.payload:
5385 msg = "disk not found"
5387 raise errors.OpExecError("Can't find disk/%d on node %s: %s" %
5388 (idx, pri_node, msg))
5390 # Step: check other node consistency
5391 self.proc.LogStep(2, steps_total, "check peer consistency")
5392 for idx, dev in enumerate(instance.disks):
5393 if idx not in self.op.disks:
5395 info("checking disk/%d consistency on %s" % (idx, pri_node))
5396 if not _CheckDiskConsistency(self, dev, pri_node, True, ldisk=True):
5397 raise errors.OpExecError("Primary node (%s) has degraded storage,"
5398 " unsafe to replace the secondary" %
5401 # Step: create new storage
5402 self.proc.LogStep(3, steps_total, "allocate new storage")
5403 for idx, dev in enumerate(instance.disks):
5404 info("adding new local storage on %s for disk/%d" %
5406 # we pass force_create=True to force LVM creation
5407 for new_lv in dev.children:
5408 _CreateBlockDev(self, new_node, instance, new_lv, True,
5409 _GetInstanceInfoText(instance), False)
5411 # Step 4: dbrd minors and drbd setups changes
5412 # after this, we must manually remove the drbd minors on both the
5413 # error and the success paths
5414 minors = cfg.AllocateDRBDMinor([new_node for dev in instance.disks],
5416 logging.debug("Allocated minors %s" % (minors,))
5417 self.proc.LogStep(4, steps_total, "changing drbd configuration")
5418 for idx, (dev, new_minor) in enumerate(zip(instance.disks, minors)):
5420 info("activating a new drbd on %s for disk/%d" % (new_node, idx))
5421 # create new devices on new_node; note that we create two IDs:
5422 # one without port, so the drbd will be activated without
5423 # networking information on the new node at this stage, and one
5424 # with network, for the latter activation in step 4
5425 (o_node1, o_node2, o_port, o_minor1, o_minor2, o_secret) = dev.logical_id
5426 if pri_node == o_node1:
5431 new_alone_id = (pri_node, new_node, None, p_minor, new_minor, o_secret)
5432 new_net_id = (pri_node, new_node, o_port, p_minor, new_minor, o_secret)
5434 iv_names[idx] = (dev, dev.children, new_net_id)
5435 logging.debug("Allocated new_minor: %s, new_logical_id: %s", new_minor,
5437 new_drbd = objects.Disk(dev_type=constants.LD_DRBD8,
5438 logical_id=new_alone_id,
5439 children=dev.children)
5441 _CreateSingleBlockDev(self, new_node, instance, new_drbd,
5442 _GetInstanceInfoText(instance), False)
5443 except errors.GenericError:
5444 self.cfg.ReleaseDRBDMinors(instance.name)
5447 for idx, dev in enumerate(instance.disks):
5448 # we have new devices, shutdown the drbd on the old secondary
5449 info("shutting down drbd for disk/%d on old node" % idx)
5450 cfg.SetDiskID(dev, old_node)
5451 msg = self.rpc.call_blockdev_shutdown(old_node, dev).RemoteFailMsg()
5453 warning("Failed to shutdown drbd for disk/%d on old node: %s" %
5455 hint="Please cleanup this device manually as soon as possible")
5457 info("detaching primary drbds from the network (=> standalone)")
5458 result = self.rpc.call_drbd_disconnect_net([pri_node], nodes_ip,
5459 instance.disks)[pri_node]
5461 msg = result.RemoteFailMsg()
5463 # detaches didn't succeed (unlikely)
5464 self.cfg.ReleaseDRBDMinors(instance.name)
5465 raise errors.OpExecError("Can't detach the disks from the network on"
5466 " old node: %s" % (msg,))
5468 # if we managed to detach at least one, we update all the disks of
5469 # the instance to point to the new secondary
5470 info("updating instance configuration")
5471 for dev, _, new_logical_id in iv_names.itervalues():
5472 dev.logical_id = new_logical_id
5473 cfg.SetDiskID(dev, pri_node)
5474 cfg.Update(instance)
5476 # and now perform the drbd attach
5477 info("attaching primary drbds to new secondary (standalone => connected)")
5478 result = self.rpc.call_drbd_attach_net([pri_node, new_node], nodes_ip,
5479 instance.disks, instance.name,
5481 for to_node, to_result in result.items():
5482 msg = to_result.RemoteFailMsg()
5484 warning("can't attach drbd disks on node %s: %s", to_node, msg,
5485 hint="please do a gnt-instance info to see the"
5488 # this can fail as the old devices are degraded and _WaitForSync
5489 # does a combined result over all disks, so we don't check its
5491 self.proc.LogStep(5, steps_total, "sync devices")
5492 _WaitForSync(self, instance, unlock=True)
5494 # so check manually all the devices
5495 for idx, (dev, old_lvs, _) in iv_names.iteritems():
5496 cfg.SetDiskID(dev, pri_node)
5497 result = self.rpc.call_blockdev_find(pri_node, dev)
5498 msg = result.RemoteFailMsg()
5499 if not msg and not result.payload:
5500 msg = "disk not found"
5502 raise errors.OpExecError("Can't find DRBD device disk/%d: %s" %
5504 if result.payload[5]:
5505 raise errors.OpExecError("DRBD device disk/%d is degraded!" % idx)
5507 self.proc.LogStep(6, steps_total, "removing old storage")
5508 for idx, (dev, old_lvs, _) in iv_names.iteritems():
5509 info("remove logical volumes for disk/%d" % idx)
5511 cfg.SetDiskID(lv, old_node)
5512 msg = self.rpc.call_blockdev_remove(old_node, lv).RemoteFailMsg()
5514 warning("Can't remove LV on old secondary: %s", msg,
5515 hint="Cleanup stale volumes by hand")
5517 def Exec(self, feedback_fn):
5518 """Execute disk replacement.
5520 This dispatches the disk replacement to the appropriate handler.
5523 instance = self.instance
5525 # Activate the instance disks if we're replacing them on a down instance
5526 if not instance.admin_up:
5527 _StartInstanceDisks(self, instance, True)
5529 if self.op.mode == constants.REPLACE_DISK_CHG:
5530 fn = self._ExecD8Secondary
5532 fn = self._ExecD8DiskOnly
5534 ret = fn(feedback_fn)
5536 # Deactivate the instance disks if we're replacing them on a down instance
5537 if not instance.admin_up:
5538 _SafeShutdownInstanceDisks(self, instance)
5543 class LUGrowDisk(LogicalUnit):
5544 """Grow a disk of an instance.
5548 HTYPE = constants.HTYPE_INSTANCE
5549 _OP_REQP = ["instance_name", "disk", "amount", "wait_for_sync"]
5552 def ExpandNames(self):
5553 self._ExpandAndLockInstance()
5554 self.needed_locks[locking.LEVEL_NODE] = []
5555 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5557 def DeclareLocks(self, level):
5558 if level == locking.LEVEL_NODE:
5559 self._LockInstancesNodes()
5561 def BuildHooksEnv(self):
5564 This runs on the master, the primary and all the secondaries.
5568 "DISK": self.op.disk,
5569 "AMOUNT": self.op.amount,
5571 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
5573 self.cfg.GetMasterNode(),
5574 self.instance.primary_node,
5578 def CheckPrereq(self):
5579 """Check prerequisites.
5581 This checks that the instance is in the cluster.
5584 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5585 assert instance is not None, \
5586 "Cannot retrieve locked instance %s" % self.op.instance_name
5587 nodenames = list(instance.all_nodes)
5588 for node in nodenames:
5589 _CheckNodeOnline(self, node)
5592 self.instance = instance
5594 if instance.disk_template not in (constants.DT_PLAIN, constants.DT_DRBD8):
5595 raise errors.OpPrereqError("Instance's disk layout does not support"
5598 self.disk = instance.FindDisk(self.op.disk)
5600 nodeinfo = self.rpc.call_node_info(nodenames, self.cfg.GetVGName(),
5601 instance.hypervisor)
5602 for node in nodenames:
5603 info = nodeinfo[node]
5604 if info.failed or not info.data:
5605 raise errors.OpPrereqError("Cannot get current information"
5606 " from node '%s'" % node)
5607 vg_free = info.data.get('vg_free', None)
5608 if not isinstance(vg_free, int):
5609 raise errors.OpPrereqError("Can't compute free disk space on"
5611 if self.op.amount > vg_free:
5612 raise errors.OpPrereqError("Not enough disk space on target node %s:"
5613 " %d MiB available, %d MiB required" %
5614 (node, vg_free, self.op.amount))
5616 def Exec(self, feedback_fn):
5617 """Execute disk grow.
5620 instance = self.instance
5622 for node in instance.all_nodes:
5623 self.cfg.SetDiskID(disk, node)
5624 result = self.rpc.call_blockdev_grow(node, disk, self.op.amount)
5625 msg = result.RemoteFailMsg()
5627 raise errors.OpExecError("Grow request failed to node %s: %s" %
5629 disk.RecordGrow(self.op.amount)
5630 self.cfg.Update(instance)
5631 if self.op.wait_for_sync:
5632 disk_abort = not _WaitForSync(self, instance)
5634 self.proc.LogWarning("Warning: disk sync-ing has not returned a good"
5635 " status.\nPlease check the instance.")
5638 class LUQueryInstanceData(NoHooksLU):
5639 """Query runtime instance data.
5642 _OP_REQP = ["instances", "static"]
5645 def ExpandNames(self):
5646 self.needed_locks = {}
5647 self.share_locks = dict(((i, 1) for i in locking.LEVELS))
5649 if not isinstance(self.op.instances, list):
5650 raise errors.OpPrereqError("Invalid argument type 'instances'")
5652 if self.op.instances:
5653 self.wanted_names = []
5654 for name in self.op.instances:
5655 full_name = self.cfg.ExpandInstanceName(name)
5656 if full_name is None:
5657 raise errors.OpPrereqError("Instance '%s' not known" % name)
5658 self.wanted_names.append(full_name)
5659 self.needed_locks[locking.LEVEL_INSTANCE] = self.wanted_names
5661 self.wanted_names = None
5662 self.needed_locks[locking.LEVEL_INSTANCE] = locking.ALL_SET
5664 self.needed_locks[locking.LEVEL_NODE] = []
5665 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5667 def DeclareLocks(self, level):
5668 if level == locking.LEVEL_NODE:
5669 self._LockInstancesNodes()
5671 def CheckPrereq(self):
5672 """Check prerequisites.
5674 This only checks the optional instance list against the existing names.
5677 if self.wanted_names is None:
5678 self.wanted_names = self.acquired_locks[locking.LEVEL_INSTANCE]
5680 self.wanted_instances = [self.cfg.GetInstanceInfo(name) for name
5681 in self.wanted_names]
5684 def _ComputeDiskStatus(self, instance, snode, dev):
5685 """Compute block device status.
5688 static = self.op.static
5690 self.cfg.SetDiskID(dev, instance.primary_node)
5691 dev_pstatus = self.rpc.call_blockdev_find(instance.primary_node, dev)
5692 if dev_pstatus.offline:
5695 msg = dev_pstatus.RemoteFailMsg()
5697 raise errors.OpExecError("Can't compute disk status for %s: %s" %
5698 (instance.name, msg))
5699 dev_pstatus = dev_pstatus.payload
5703 if dev.dev_type in constants.LDS_DRBD:
5704 # we change the snode then (otherwise we use the one passed in)
5705 if dev.logical_id[0] == instance.primary_node:
5706 snode = dev.logical_id[1]
5708 snode = dev.logical_id[0]
5710 if snode and not static:
5711 self.cfg.SetDiskID(dev, snode)
5712 dev_sstatus = self.rpc.call_blockdev_find(snode, dev)
5713 if dev_sstatus.offline:
5716 msg = dev_sstatus.RemoteFailMsg()
5718 raise errors.OpExecError("Can't compute disk status for %s: %s" %
5719 (instance.name, msg))
5720 dev_sstatus = dev_sstatus.payload
5725 dev_children = [self._ComputeDiskStatus(instance, snode, child)
5726 for child in dev.children]
5731 "iv_name": dev.iv_name,
5732 "dev_type": dev.dev_type,
5733 "logical_id": dev.logical_id,
5734 "physical_id": dev.physical_id,
5735 "pstatus": dev_pstatus,
5736 "sstatus": dev_sstatus,
5737 "children": dev_children,
5743 def Exec(self, feedback_fn):
5744 """Gather and return data"""
5747 cluster = self.cfg.GetClusterInfo()
5749 for instance in self.wanted_instances:
5750 if not self.op.static:
5751 remote_info = self.rpc.call_instance_info(instance.primary_node,
5753 instance.hypervisor)
5755 remote_info = remote_info.data
5756 if remote_info and "state" in remote_info:
5759 remote_state = "down"
5762 if instance.admin_up:
5765 config_state = "down"
5767 disks = [self._ComputeDiskStatus(instance, None, device)
5768 for device in instance.disks]
5771 "name": instance.name,
5772 "config_state": config_state,
5773 "run_state": remote_state,
5774 "pnode": instance.primary_node,
5775 "snodes": instance.secondary_nodes,
5777 "nics": [(nic.mac, nic.ip, nic.bridge) for nic in instance.nics],
5779 "hypervisor": instance.hypervisor,
5780 "network_port": instance.network_port,
5781 "hv_instance": instance.hvparams,
5782 "hv_actual": cluster.FillHV(instance),
5783 "be_instance": instance.beparams,
5784 "be_actual": cluster.FillBE(instance),
5787 result[instance.name] = idict
5792 class LUSetInstanceParams(LogicalUnit):
5793 """Modifies an instances's parameters.
5796 HPATH = "instance-modify"
5797 HTYPE = constants.HTYPE_INSTANCE
5798 _OP_REQP = ["instance_name"]
5801 def CheckArguments(self):
5802 if not hasattr(self.op, 'nics'):
5804 if not hasattr(self.op, 'disks'):
5806 if not hasattr(self.op, 'beparams'):
5807 self.op.beparams = {}
5808 if not hasattr(self.op, 'hvparams'):
5809 self.op.hvparams = {}
5810 self.op.force = getattr(self.op, "force", False)
5811 if not (self.op.nics or self.op.disks or
5812 self.op.hvparams or self.op.beparams):
5813 raise errors.OpPrereqError("No changes submitted")
5817 for disk_op, disk_dict in self.op.disks:
5818 if disk_op == constants.DDM_REMOVE:
5821 elif disk_op == constants.DDM_ADD:
5824 if not isinstance(disk_op, int):
5825 raise errors.OpPrereqError("Invalid disk index")
5826 if disk_op == constants.DDM_ADD:
5827 mode = disk_dict.setdefault('mode', constants.DISK_RDWR)
5828 if mode not in constants.DISK_ACCESS_SET:
5829 raise errors.OpPrereqError("Invalid disk access mode '%s'" % mode)
5830 size = disk_dict.get('size', None)
5832 raise errors.OpPrereqError("Required disk parameter size missing")
5835 except ValueError, err:
5836 raise errors.OpPrereqError("Invalid disk size parameter: %s" %
5838 disk_dict['size'] = size
5840 # modification of disk
5841 if 'size' in disk_dict:
5842 raise errors.OpPrereqError("Disk size change not possible, use"
5845 if disk_addremove > 1:
5846 raise errors.OpPrereqError("Only one disk add or remove operation"
5847 " supported at a time")
5851 for nic_op, nic_dict in self.op.nics:
5852 if nic_op == constants.DDM_REMOVE:
5855 elif nic_op == constants.DDM_ADD:
5858 if not isinstance(nic_op, int):
5859 raise errors.OpPrereqError("Invalid nic index")
5861 # nic_dict should be a dict
5862 nic_ip = nic_dict.get('ip', None)
5863 if nic_ip is not None:
5864 if nic_ip.lower() == constants.VALUE_NONE:
5865 nic_dict['ip'] = None
5867 if not utils.IsValidIP(nic_ip):
5868 raise errors.OpPrereqError("Invalid IP address '%s'" % nic_ip)
5870 if nic_op == constants.DDM_ADD:
5871 nic_bridge = nic_dict.get('bridge', None)
5872 if nic_bridge is None:
5873 nic_dict['bridge'] = self.cfg.GetDefBridge()
5874 nic_mac = nic_dict.get('mac', None)
5876 nic_dict['mac'] = constants.VALUE_AUTO
5878 if 'mac' in nic_dict:
5879 nic_mac = nic_dict['mac']
5880 if nic_mac not in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
5881 if not utils.IsValidMac(nic_mac):
5882 raise errors.OpPrereqError("Invalid MAC address %s" % nic_mac)
5883 if nic_op != constants.DDM_ADD and nic_mac == constants.VALUE_AUTO:
5884 raise errors.OpPrereqError("'auto' is not a valid MAC address when"
5885 " modifying an existing nic")
5887 if nic_addremove > 1:
5888 raise errors.OpPrereqError("Only one NIC add or remove operation"
5889 " supported at a time")
5891 def ExpandNames(self):
5892 self._ExpandAndLockInstance()
5893 self.needed_locks[locking.LEVEL_NODE] = []
5894 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5896 def DeclareLocks(self, level):
5897 if level == locking.LEVEL_NODE:
5898 self._LockInstancesNodes()
5900 def BuildHooksEnv(self):
5903 This runs on the master, primary and secondaries.
5907 if constants.BE_MEMORY in self.be_new:
5908 args['memory'] = self.be_new[constants.BE_MEMORY]
5909 if constants.BE_VCPUS in self.be_new:
5910 args['vcpus'] = self.be_new[constants.BE_VCPUS]
5911 # TODO: export disk changes. Note: _BuildInstanceHookEnv* don't export disk
5912 # information at all.
5915 nic_override = dict(self.op.nics)
5916 for idx, nic in enumerate(self.instance.nics):
5917 if idx in nic_override:
5918 this_nic_override = nic_override[idx]
5920 this_nic_override = {}
5921 if 'ip' in this_nic_override:
5922 ip = this_nic_override['ip']
5925 if 'bridge' in this_nic_override:
5926 bridge = this_nic_override['bridge']
5929 if 'mac' in this_nic_override:
5930 mac = this_nic_override['mac']
5933 args['nics'].append((ip, bridge, mac))
5934 if constants.DDM_ADD in nic_override:
5935 ip = nic_override[constants.DDM_ADD].get('ip', None)
5936 bridge = nic_override[constants.DDM_ADD]['bridge']
5937 mac = nic_override[constants.DDM_ADD]['mac']
5938 args['nics'].append((ip, bridge, mac))
5939 elif constants.DDM_REMOVE in nic_override:
5940 del args['nics'][-1]
5942 env = _BuildInstanceHookEnvByObject(self, self.instance, override=args)
5943 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
5946 def CheckPrereq(self):
5947 """Check prerequisites.
5949 This only checks the instance list against the existing names.
5952 force = self.force = self.op.force
5954 # checking the new params on the primary/secondary nodes
5956 instance = self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5957 assert self.instance is not None, \
5958 "Cannot retrieve locked instance %s" % self.op.instance_name
5959 pnode = instance.primary_node
5960 nodelist = list(instance.all_nodes)
5962 # hvparams processing
5963 if self.op.hvparams:
5964 i_hvdict = copy.deepcopy(instance.hvparams)
5965 for key, val in self.op.hvparams.iteritems():
5966 if val == constants.VALUE_DEFAULT:
5973 cluster = self.cfg.GetClusterInfo()
5974 utils.ForceDictType(i_hvdict, constants.HVS_PARAMETER_TYPES)
5975 hv_new = objects.FillDict(cluster.hvparams[instance.hypervisor],
5978 hypervisor.GetHypervisor(
5979 instance.hypervisor).CheckParameterSyntax(hv_new)
5980 _CheckHVParams(self, nodelist, instance.hypervisor, hv_new)
5981 self.hv_new = hv_new # the new actual values
5982 self.hv_inst = i_hvdict # the new dict (without defaults)
5984 self.hv_new = self.hv_inst = {}
5986 # beparams processing
5987 if self.op.beparams:
5988 i_bedict = copy.deepcopy(instance.beparams)
5989 for key, val in self.op.beparams.iteritems():
5990 if val == constants.VALUE_DEFAULT:
5997 cluster = self.cfg.GetClusterInfo()
5998 utils.ForceDictType(i_bedict, constants.BES_PARAMETER_TYPES)
5999 be_new = objects.FillDict(cluster.beparams[constants.PP_DEFAULT],
6001 self.be_new = be_new # the new actual values
6002 self.be_inst = i_bedict # the new dict (without defaults)
6004 self.be_new = self.be_inst = {}
6008 if constants.BE_MEMORY in self.op.beparams and not self.force:
6009 mem_check_list = [pnode]
6010 if be_new[constants.BE_AUTO_BALANCE]:
6011 # either we changed auto_balance to yes or it was from before
6012 mem_check_list.extend(instance.secondary_nodes)
6013 instance_info = self.rpc.call_instance_info(pnode, instance.name,
6014 instance.hypervisor)
6015 nodeinfo = self.rpc.call_node_info(mem_check_list, self.cfg.GetVGName(),
6016 instance.hypervisor)
6017 if nodeinfo[pnode].failed or not isinstance(nodeinfo[pnode].data, dict):
6018 # Assume the primary node is unreachable and go ahead
6019 self.warn.append("Can't get info from primary node %s" % pnode)
6021 if not instance_info.failed and instance_info.data:
6022 current_mem = int(instance_info.data['memory'])
6024 # Assume instance not running
6025 # (there is a slight race condition here, but it's not very probable,
6026 # and we have no other way to check)
6028 miss_mem = (be_new[constants.BE_MEMORY] - current_mem -
6029 nodeinfo[pnode].data['memory_free'])
6031 raise errors.OpPrereqError("This change will prevent the instance"
6032 " from starting, due to %d MB of memory"
6033 " missing on its primary node" % miss_mem)
6035 if be_new[constants.BE_AUTO_BALANCE]:
6036 for node, nres in nodeinfo.iteritems():
6037 if node not in instance.secondary_nodes:
6039 if nres.failed or not isinstance(nres.data, dict):
6040 self.warn.append("Can't get info from secondary node %s" % node)
6041 elif be_new[constants.BE_MEMORY] > nres.data['memory_free']:
6042 self.warn.append("Not enough memory to failover instance to"
6043 " secondary node %s" % node)
6046 for nic_op, nic_dict in self.op.nics:
6047 if nic_op == constants.DDM_REMOVE:
6048 if not instance.nics:
6049 raise errors.OpPrereqError("Instance has no NICs, cannot remove")
6051 if nic_op != constants.DDM_ADD:
6053 if nic_op < 0 or nic_op >= len(instance.nics):
6054 raise errors.OpPrereqError("Invalid NIC index %s, valid values"
6056 (nic_op, len(instance.nics)))
6057 if 'bridge' in nic_dict:
6058 nic_bridge = nic_dict['bridge']
6059 if nic_bridge is None:
6060 raise errors.OpPrereqError('Cannot set the nic bridge to None')
6061 if not self.rpc.call_bridges_exist(pnode, [nic_bridge]):
6062 msg = ("Bridge '%s' doesn't exist on one of"
6063 " the instance nodes" % nic_bridge)
6065 self.warn.append(msg)
6067 raise errors.OpPrereqError(msg)
6068 if 'mac' in nic_dict:
6069 nic_mac = nic_dict['mac']
6071 raise errors.OpPrereqError('Cannot set the nic mac to None')
6072 elif nic_mac in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
6073 # otherwise generate the mac
6074 nic_dict['mac'] = self.cfg.GenerateMAC()
6076 # or validate/reserve the current one
6077 if self.cfg.IsMacInUse(nic_mac):
6078 raise errors.OpPrereqError("MAC address %s already in use"
6079 " in cluster" % nic_mac)
6082 if self.op.disks and instance.disk_template == constants.DT_DISKLESS:
6083 raise errors.OpPrereqError("Disk operations not supported for"
6084 " diskless instances")
6085 for disk_op, disk_dict in self.op.disks:
6086 if disk_op == constants.DDM_REMOVE:
6087 if len(instance.disks) == 1:
6088 raise errors.OpPrereqError("Cannot remove the last disk of"
6090 ins_l = self.rpc.call_instance_list([pnode], [instance.hypervisor])
6091 ins_l = ins_l[pnode]
6092 if ins_l.failed or not isinstance(ins_l.data, list):
6093 raise errors.OpPrereqError("Can't contact node '%s'" % pnode)
6094 if instance.name in ins_l.data:
6095 raise errors.OpPrereqError("Instance is running, can't remove"
6098 if (disk_op == constants.DDM_ADD and
6099 len(instance.nics) >= constants.MAX_DISKS):
6100 raise errors.OpPrereqError("Instance has too many disks (%d), cannot"
6101 " add more" % constants.MAX_DISKS)
6102 if disk_op not in (constants.DDM_ADD, constants.DDM_REMOVE):
6104 if disk_op < 0 or disk_op >= len(instance.disks):
6105 raise errors.OpPrereqError("Invalid disk index %s, valid values"
6107 (disk_op, len(instance.disks)))
6111 def Exec(self, feedback_fn):
6112 """Modifies an instance.
6114 All parameters take effect only at the next restart of the instance.
6117 # Process here the warnings from CheckPrereq, as we don't have a
6118 # feedback_fn there.
6119 for warn in self.warn:
6120 feedback_fn("WARNING: %s" % warn)
6123 instance = self.instance
6125 for disk_op, disk_dict in self.op.disks:
6126 if disk_op == constants.DDM_REMOVE:
6127 # remove the last disk
6128 device = instance.disks.pop()
6129 device_idx = len(instance.disks)
6130 for node, disk in device.ComputeNodeTree(instance.primary_node):
6131 self.cfg.SetDiskID(disk, node)
6132 msg = self.rpc.call_blockdev_remove(node, disk).RemoteFailMsg()
6134 self.LogWarning("Could not remove disk/%d on node %s: %s,"
6135 " continuing anyway", device_idx, node, msg)
6136 result.append(("disk/%d" % device_idx, "remove"))
6137 elif disk_op == constants.DDM_ADD:
6139 if instance.disk_template == constants.DT_FILE:
6140 file_driver, file_path = instance.disks[0].logical_id
6141 file_path = os.path.dirname(file_path)
6143 file_driver = file_path = None
6144 disk_idx_base = len(instance.disks)
6145 new_disk = _GenerateDiskTemplate(self,
6146 instance.disk_template,
6147 instance.name, instance.primary_node,
6148 instance.secondary_nodes,
6153 instance.disks.append(new_disk)
6154 info = _GetInstanceInfoText(instance)
6156 logging.info("Creating volume %s for instance %s",
6157 new_disk.iv_name, instance.name)
6158 # Note: this needs to be kept in sync with _CreateDisks
6160 for node in instance.all_nodes:
6161 f_create = node == instance.primary_node
6163 _CreateBlockDev(self, node, instance, new_disk,
6164 f_create, info, f_create)
6165 except errors.OpExecError, err:
6166 self.LogWarning("Failed to create volume %s (%s) on"
6168 new_disk.iv_name, new_disk, node, err)
6169 result.append(("disk/%d" % disk_idx_base, "add:size=%s,mode=%s" %
6170 (new_disk.size, new_disk.mode)))
6172 # change a given disk
6173 instance.disks[disk_op].mode = disk_dict['mode']
6174 result.append(("disk.mode/%d" % disk_op, disk_dict['mode']))
6176 for nic_op, nic_dict in self.op.nics:
6177 if nic_op == constants.DDM_REMOVE:
6178 # remove the last nic
6179 del instance.nics[-1]
6180 result.append(("nic.%d" % len(instance.nics), "remove"))
6181 elif nic_op == constants.DDM_ADD:
6182 # mac and bridge should be set, by now
6183 mac = nic_dict['mac']
6184 bridge = nic_dict['bridge']
6185 new_nic = objects.NIC(mac=mac, ip=nic_dict.get('ip', None),
6187 instance.nics.append(new_nic)
6188 result.append(("nic.%d" % (len(instance.nics) - 1),
6189 "add:mac=%s,ip=%s,bridge=%s" %
6190 (new_nic.mac, new_nic.ip, new_nic.bridge)))
6192 # change a given nic
6193 for key in 'mac', 'ip', 'bridge':
6195 setattr(instance.nics[nic_op], key, nic_dict[key])
6196 result.append(("nic.%s/%d" % (key, nic_op), nic_dict[key]))
6199 if self.op.hvparams:
6200 instance.hvparams = self.hv_inst
6201 for key, val in self.op.hvparams.iteritems():
6202 result.append(("hv/%s" % key, val))
6205 if self.op.beparams:
6206 instance.beparams = self.be_inst
6207 for key, val in self.op.beparams.iteritems():
6208 result.append(("be/%s" % key, val))
6210 self.cfg.Update(instance)
6215 class LUQueryExports(NoHooksLU):
6216 """Query the exports list
6219 _OP_REQP = ['nodes']
6222 def ExpandNames(self):
6223 self.needed_locks = {}
6224 self.share_locks[locking.LEVEL_NODE] = 1
6225 if not self.op.nodes:
6226 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
6228 self.needed_locks[locking.LEVEL_NODE] = \
6229 _GetWantedNodes(self, self.op.nodes)
6231 def CheckPrereq(self):
6232 """Check prerequisites.
6235 self.nodes = self.acquired_locks[locking.LEVEL_NODE]
6237 def Exec(self, feedback_fn):
6238 """Compute the list of all the exported system images.
6241 @return: a dictionary with the structure node->(export-list)
6242 where export-list is a list of the instances exported on
6246 rpcresult = self.rpc.call_export_list(self.nodes)
6248 for node in rpcresult:
6249 if rpcresult[node].failed:
6250 result[node] = False
6252 result[node] = rpcresult[node].data
6257 class LUExportInstance(LogicalUnit):
6258 """Export an instance to an image in the cluster.
6261 HPATH = "instance-export"
6262 HTYPE = constants.HTYPE_INSTANCE
6263 _OP_REQP = ["instance_name", "target_node", "shutdown"]
6266 def ExpandNames(self):
6267 self._ExpandAndLockInstance()
6268 # FIXME: lock only instance primary and destination node
6270 # Sad but true, for now we have do lock all nodes, as we don't know where
6271 # the previous export might be, and and in this LU we search for it and
6272 # remove it from its current node. In the future we could fix this by:
6273 # - making a tasklet to search (share-lock all), then create the new one,
6274 # then one to remove, after
6275 # - removing the removal operation altoghether
6276 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
6278 def DeclareLocks(self, level):
6279 """Last minute lock declaration."""
6280 # All nodes are locked anyway, so nothing to do here.
6282 def BuildHooksEnv(self):
6285 This will run on the master, primary node and target node.
6289 "EXPORT_NODE": self.op.target_node,
6290 "EXPORT_DO_SHUTDOWN": self.op.shutdown,
6292 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
6293 nl = [self.cfg.GetMasterNode(), self.instance.primary_node,
6294 self.op.target_node]
6297 def CheckPrereq(self):
6298 """Check prerequisites.
6300 This checks that the instance and node names are valid.
6303 instance_name = self.op.instance_name
6304 self.instance = self.cfg.GetInstanceInfo(instance_name)
6305 assert self.instance is not None, \
6306 "Cannot retrieve locked instance %s" % self.op.instance_name
6307 _CheckNodeOnline(self, self.instance.primary_node)
6309 self.dst_node = self.cfg.GetNodeInfo(
6310 self.cfg.ExpandNodeName(self.op.target_node))
6312 if self.dst_node is None:
6313 # This is wrong node name, not a non-locked node
6314 raise errors.OpPrereqError("Wrong node name %s" % self.op.target_node)
6315 _CheckNodeOnline(self, self.dst_node.name)
6316 _CheckNodeNotDrained(self, self.dst_node.name)
6318 # instance disk type verification
6319 for disk in self.instance.disks:
6320 if disk.dev_type == constants.LD_FILE:
6321 raise errors.OpPrereqError("Export not supported for instances with"
6322 " file-based disks")
6324 def Exec(self, feedback_fn):
6325 """Export an instance to an image in the cluster.
6328 instance = self.instance
6329 dst_node = self.dst_node
6330 src_node = instance.primary_node
6331 if self.op.shutdown:
6332 # shutdown the instance, but not the disks
6333 result = self.rpc.call_instance_shutdown(src_node, instance)
6334 msg = result.RemoteFailMsg()
6336 raise errors.OpExecError("Could not shutdown instance %s on"
6338 (instance.name, src_node, msg))
6340 vgname = self.cfg.GetVGName()
6344 # set the disks ID correctly since call_instance_start needs the
6345 # correct drbd minor to create the symlinks
6346 for disk in instance.disks:
6347 self.cfg.SetDiskID(disk, src_node)
6350 for disk in instance.disks:
6351 # new_dev_name will be a snapshot of an lvm leaf of the one we passed
6352 new_dev_name = self.rpc.call_blockdev_snapshot(src_node, disk)
6353 if new_dev_name.failed or not new_dev_name.data:
6354 self.LogWarning("Could not snapshot block device %s on node %s",
6355 disk.logical_id[1], src_node)
6356 snap_disks.append(False)
6358 new_dev = objects.Disk(dev_type=constants.LD_LV, size=disk.size,
6359 logical_id=(vgname, new_dev_name.data),
6360 physical_id=(vgname, new_dev_name.data),
6361 iv_name=disk.iv_name)
6362 snap_disks.append(new_dev)
6365 if self.op.shutdown and instance.admin_up:
6366 result = self.rpc.call_instance_start(src_node, instance, None, None)
6367 msg = result.RemoteFailMsg()
6369 _ShutdownInstanceDisks(self, instance)
6370 raise errors.OpExecError("Could not start instance: %s" % msg)
6372 # TODO: check for size
6374 cluster_name = self.cfg.GetClusterName()
6375 for idx, dev in enumerate(snap_disks):
6377 result = self.rpc.call_snapshot_export(src_node, dev, dst_node.name,
6378 instance, cluster_name, idx)
6379 if result.failed or not result.data:
6380 self.LogWarning("Could not export block device %s from node %s to"
6381 " node %s", dev.logical_id[1], src_node,
6383 msg = self.rpc.call_blockdev_remove(src_node, dev).RemoteFailMsg()
6385 self.LogWarning("Could not remove snapshot block device %s from node"
6386 " %s: %s", dev.logical_id[1], src_node, msg)
6388 result = self.rpc.call_finalize_export(dst_node.name, instance, snap_disks)
6389 if result.failed or not result.data:
6390 self.LogWarning("Could not finalize export for instance %s on node %s",
6391 instance.name, dst_node.name)
6393 nodelist = self.cfg.GetNodeList()
6394 nodelist.remove(dst_node.name)
6396 # on one-node clusters nodelist will be empty after the removal
6397 # if we proceed the backup would be removed because OpQueryExports
6398 # substitutes an empty list with the full cluster node list.
6400 exportlist = self.rpc.call_export_list(nodelist)
6401 for node in exportlist:
6402 if exportlist[node].failed:
6404 if instance.name in exportlist[node].data:
6405 if not self.rpc.call_export_remove(node, instance.name):
6406 self.LogWarning("Could not remove older export for instance %s"
6407 " on node %s", instance.name, node)
6410 class LURemoveExport(NoHooksLU):
6411 """Remove exports related to the named instance.
6414 _OP_REQP = ["instance_name"]
6417 def ExpandNames(self):
6418 self.needed_locks = {}
6419 # We need all nodes to be locked in order for RemoveExport to work, but we
6420 # don't need to lock the instance itself, as nothing will happen to it (and
6421 # we can remove exports also for a removed instance)
6422 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
6424 def CheckPrereq(self):
6425 """Check prerequisites.
6429 def Exec(self, feedback_fn):
6430 """Remove any export.
6433 instance_name = self.cfg.ExpandInstanceName(self.op.instance_name)
6434 # If the instance was not found we'll try with the name that was passed in.
6435 # This will only work if it was an FQDN, though.
6437 if not instance_name:
6439 instance_name = self.op.instance_name
6441 exportlist = self.rpc.call_export_list(self.acquired_locks[
6442 locking.LEVEL_NODE])
6444 for node in exportlist:
6445 if exportlist[node].failed:
6446 self.LogWarning("Failed to query node %s, continuing" % node)
6448 if instance_name in exportlist[node].data:
6450 result = self.rpc.call_export_remove(node, instance_name)
6451 if result.failed or not result.data:
6452 logging.error("Could not remove export for instance %s"
6453 " on node %s", instance_name, node)
6455 if fqdn_warn and not found:
6456 feedback_fn("Export not found. If trying to remove an export belonging"
6457 " to a deleted instance please use its Fully Qualified"
6461 class TagsLU(NoHooksLU):
6464 This is an abstract class which is the parent of all the other tags LUs.
6468 def ExpandNames(self):
6469 self.needed_locks = {}
6470 if self.op.kind == constants.TAG_NODE:
6471 name = self.cfg.ExpandNodeName(self.op.name)
6473 raise errors.OpPrereqError("Invalid node name (%s)" %
6476 self.needed_locks[locking.LEVEL_NODE] = name
6477 elif self.op.kind == constants.TAG_INSTANCE:
6478 name = self.cfg.ExpandInstanceName(self.op.name)
6480 raise errors.OpPrereqError("Invalid instance name (%s)" %
6483 self.needed_locks[locking.LEVEL_INSTANCE] = name
6485 def CheckPrereq(self):
6486 """Check prerequisites.
6489 if self.op.kind == constants.TAG_CLUSTER:
6490 self.target = self.cfg.GetClusterInfo()
6491 elif self.op.kind == constants.TAG_NODE:
6492 self.target = self.cfg.GetNodeInfo(self.op.name)
6493 elif self.op.kind == constants.TAG_INSTANCE:
6494 self.target = self.cfg.GetInstanceInfo(self.op.name)
6496 raise errors.OpPrereqError("Wrong tag type requested (%s)" %
6500 class LUGetTags(TagsLU):
6501 """Returns the tags of a given object.
6504 _OP_REQP = ["kind", "name"]
6507 def Exec(self, feedback_fn):
6508 """Returns the tag list.
6511 return list(self.target.GetTags())
6514 class LUSearchTags(NoHooksLU):
6515 """Searches the tags for a given pattern.
6518 _OP_REQP = ["pattern"]
6521 def ExpandNames(self):
6522 self.needed_locks = {}
6524 def CheckPrereq(self):
6525 """Check prerequisites.
6527 This checks the pattern passed for validity by compiling it.
6531 self.re = re.compile(self.op.pattern)
6532 except re.error, err:
6533 raise errors.OpPrereqError("Invalid search pattern '%s': %s" %
6534 (self.op.pattern, err))
6536 def Exec(self, feedback_fn):
6537 """Returns the tag list.
6541 tgts = [("/cluster", cfg.GetClusterInfo())]
6542 ilist = cfg.GetAllInstancesInfo().values()
6543 tgts.extend([("/instances/%s" % i.name, i) for i in ilist])
6544 nlist = cfg.GetAllNodesInfo().values()
6545 tgts.extend([("/nodes/%s" % n.name, n) for n in nlist])
6547 for path, target in tgts:
6548 for tag in target.GetTags():
6549 if self.re.search(tag):
6550 results.append((path, tag))
6554 class LUAddTags(TagsLU):
6555 """Sets a tag on a given object.
6558 _OP_REQP = ["kind", "name", "tags"]
6561 def CheckPrereq(self):
6562 """Check prerequisites.
6564 This checks the type and length of the tag name and value.
6567 TagsLU.CheckPrereq(self)
6568 for tag in self.op.tags:
6569 objects.TaggableObject.ValidateTag(tag)
6571 def Exec(self, feedback_fn):
6576 for tag in self.op.tags:
6577 self.target.AddTag(tag)
6578 except errors.TagError, err:
6579 raise errors.OpExecError("Error while setting tag: %s" % str(err))
6581 self.cfg.Update(self.target)
6582 except errors.ConfigurationError:
6583 raise errors.OpRetryError("There has been a modification to the"
6584 " config file and the operation has been"
6585 " aborted. Please retry.")
6588 class LUDelTags(TagsLU):
6589 """Delete a list of tags from a given object.
6592 _OP_REQP = ["kind", "name", "tags"]
6595 def CheckPrereq(self):
6596 """Check prerequisites.
6598 This checks that we have the given tag.
6601 TagsLU.CheckPrereq(self)
6602 for tag in self.op.tags:
6603 objects.TaggableObject.ValidateTag(tag)
6604 del_tags = frozenset(self.op.tags)
6605 cur_tags = self.target.GetTags()
6606 if not del_tags <= cur_tags:
6607 diff_tags = del_tags - cur_tags
6608 diff_names = ["'%s'" % tag for tag in diff_tags]
6610 raise errors.OpPrereqError("Tag(s) %s not found" %
6611 (",".join(diff_names)))
6613 def Exec(self, feedback_fn):
6614 """Remove the tag from the object.
6617 for tag in self.op.tags:
6618 self.target.RemoveTag(tag)
6620 self.cfg.Update(self.target)
6621 except errors.ConfigurationError:
6622 raise errors.OpRetryError("There has been a modification to the"
6623 " config file and the operation has been"
6624 " aborted. Please retry.")
6627 class LUTestDelay(NoHooksLU):
6628 """Sleep for a specified amount of time.
6630 This LU sleeps on the master and/or nodes for a specified amount of
6634 _OP_REQP = ["duration", "on_master", "on_nodes"]
6637 def ExpandNames(self):
6638 """Expand names and set required locks.
6640 This expands the node list, if any.
6643 self.needed_locks = {}
6644 if self.op.on_nodes:
6645 # _GetWantedNodes can be used here, but is not always appropriate to use
6646 # this way in ExpandNames. Check LogicalUnit.ExpandNames docstring for
6648 self.op.on_nodes = _GetWantedNodes(self, self.op.on_nodes)
6649 self.needed_locks[locking.LEVEL_NODE] = self.op.on_nodes
6651 def CheckPrereq(self):
6652 """Check prerequisites.
6656 def Exec(self, feedback_fn):
6657 """Do the actual sleep.
6660 if self.op.on_master:
6661 if not utils.TestDelay(self.op.duration):
6662 raise errors.OpExecError("Error during master delay test")
6663 if self.op.on_nodes:
6664 result = self.rpc.call_test_delay(self.op.on_nodes, self.op.duration)
6666 raise errors.OpExecError("Complete failure from rpc call")
6667 for node, node_result in result.items():
6669 if not node_result.data:
6670 raise errors.OpExecError("Failure during rpc call to node %s,"
6671 " result: %s" % (node, node_result.data))
6674 class IAllocator(object):
6675 """IAllocator framework.
6677 An IAllocator instance has three sets of attributes:
6678 - cfg that is needed to query the cluster
6679 - input data (all members of the _KEYS class attribute are required)
6680 - four buffer attributes (in|out_data|text), that represent the
6681 input (to the external script) in text and data structure format,
6682 and the output from it, again in two formats
6683 - the result variables from the script (success, info, nodes) for
6688 "mem_size", "disks", "disk_template",
6689 "os", "tags", "nics", "vcpus", "hypervisor",
6695 def __init__(self, lu, mode, name, **kwargs):
6697 # init buffer variables
6698 self.in_text = self.out_text = self.in_data = self.out_data = None
6699 # init all input fields so that pylint is happy
6702 self.mem_size = self.disks = self.disk_template = None
6703 self.os = self.tags = self.nics = self.vcpus = None
6704 self.hypervisor = None
6705 self.relocate_from = None
6707 self.required_nodes = None
6708 # init result fields
6709 self.success = self.info = self.nodes = None
6710 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
6711 keyset = self._ALLO_KEYS
6712 elif self.mode == constants.IALLOCATOR_MODE_RELOC:
6713 keyset = self._RELO_KEYS
6715 raise errors.ProgrammerError("Unknown mode '%s' passed to the"
6716 " IAllocator" % self.mode)
6718 if key not in keyset:
6719 raise errors.ProgrammerError("Invalid input parameter '%s' to"
6720 " IAllocator" % key)
6721 setattr(self, key, kwargs[key])
6723 if key not in kwargs:
6724 raise errors.ProgrammerError("Missing input parameter '%s' to"
6725 " IAllocator" % key)
6726 self._BuildInputData()
6728 def _ComputeClusterData(self):
6729 """Compute the generic allocator input data.
6731 This is the data that is independent of the actual operation.
6735 cluster_info = cfg.GetClusterInfo()
6738 "version": constants.IALLOCATOR_VERSION,
6739 "cluster_name": cfg.GetClusterName(),
6740 "cluster_tags": list(cluster_info.GetTags()),
6741 "enabled_hypervisors": list(cluster_info.enabled_hypervisors),
6742 # we don't have job IDs
6744 iinfo = cfg.GetAllInstancesInfo().values()
6745 i_list = [(inst, cluster_info.FillBE(inst)) for inst in iinfo]
6749 node_list = cfg.GetNodeList()
6751 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
6752 hypervisor_name = self.hypervisor
6753 elif self.mode == constants.IALLOCATOR_MODE_RELOC:
6754 hypervisor_name = cfg.GetInstanceInfo(self.name).hypervisor
6756 node_data = self.lu.rpc.call_node_info(node_list, cfg.GetVGName(),
6758 node_iinfo = self.lu.rpc.call_all_instances_info(node_list,
6759 cluster_info.enabled_hypervisors)
6760 for nname, nresult in node_data.items():
6761 # first fill in static (config-based) values
6762 ninfo = cfg.GetNodeInfo(nname)
6764 "tags": list(ninfo.GetTags()),
6765 "primary_ip": ninfo.primary_ip,
6766 "secondary_ip": ninfo.secondary_ip,
6767 "offline": ninfo.offline,
6768 "drained": ninfo.drained,
6769 "master_candidate": ninfo.master_candidate,
6772 if not ninfo.offline:
6774 if not isinstance(nresult.data, dict):
6775 raise errors.OpExecError("Can't get data for node %s" % nname)
6776 remote_info = nresult.data
6777 for attr in ['memory_total', 'memory_free', 'memory_dom0',
6778 'vg_size', 'vg_free', 'cpu_total']:
6779 if attr not in remote_info:
6780 raise errors.OpExecError("Node '%s' didn't return attribute"
6781 " '%s'" % (nname, attr))
6783 remote_info[attr] = int(remote_info[attr])
6784 except ValueError, err:
6785 raise errors.OpExecError("Node '%s' returned invalid value"
6786 " for '%s': %s" % (nname, attr, err))
6787 # compute memory used by primary instances
6788 i_p_mem = i_p_up_mem = 0
6789 for iinfo, beinfo in i_list:
6790 if iinfo.primary_node == nname:
6791 i_p_mem += beinfo[constants.BE_MEMORY]
6792 if iinfo.name not in node_iinfo[nname].data:
6795 i_used_mem = int(node_iinfo[nname].data[iinfo.name]['memory'])
6796 i_mem_diff = beinfo[constants.BE_MEMORY] - i_used_mem
6797 remote_info['memory_free'] -= max(0, i_mem_diff)
6800 i_p_up_mem += beinfo[constants.BE_MEMORY]
6802 # compute memory used by instances
6804 "total_memory": remote_info['memory_total'],
6805 "reserved_memory": remote_info['memory_dom0'],
6806 "free_memory": remote_info['memory_free'],
6807 "total_disk": remote_info['vg_size'],
6808 "free_disk": remote_info['vg_free'],
6809 "total_cpus": remote_info['cpu_total'],
6810 "i_pri_memory": i_p_mem,
6811 "i_pri_up_memory": i_p_up_mem,
6815 node_results[nname] = pnr
6816 data["nodes"] = node_results
6820 for iinfo, beinfo in i_list:
6821 nic_data = [{"mac": n.mac, "ip": n.ip, "bridge": n.bridge}
6822 for n in iinfo.nics]
6824 "tags": list(iinfo.GetTags()),
6825 "admin_up": iinfo.admin_up,
6826 "vcpus": beinfo[constants.BE_VCPUS],
6827 "memory": beinfo[constants.BE_MEMORY],
6829 "nodes": [iinfo.primary_node] + list(iinfo.secondary_nodes),
6831 "disks": [{"size": dsk.size, "mode": dsk.mode} for dsk in iinfo.disks],
6832 "disk_template": iinfo.disk_template,
6833 "hypervisor": iinfo.hypervisor,
6835 pir["disk_space_total"] = _ComputeDiskSize(iinfo.disk_template,
6837 instance_data[iinfo.name] = pir
6839 data["instances"] = instance_data
6843 def _AddNewInstance(self):
6844 """Add new instance data to allocator structure.
6846 This in combination with _AllocatorGetClusterData will create the
6847 correct structure needed as input for the allocator.
6849 The checks for the completeness of the opcode must have already been
6855 disk_space = _ComputeDiskSize(self.disk_template, self.disks)
6857 if self.disk_template in constants.DTS_NET_MIRROR:
6858 self.required_nodes = 2
6860 self.required_nodes = 1
6864 "disk_template": self.disk_template,
6867 "vcpus": self.vcpus,
6868 "memory": self.mem_size,
6869 "disks": self.disks,
6870 "disk_space_total": disk_space,
6872 "required_nodes": self.required_nodes,
6874 data["request"] = request
6876 def _AddRelocateInstance(self):
6877 """Add relocate instance data to allocator structure.
6879 This in combination with _IAllocatorGetClusterData will create the
6880 correct structure needed as input for the allocator.
6882 The checks for the completeness of the opcode must have already been
6886 instance = self.lu.cfg.GetInstanceInfo(self.name)
6887 if instance is None:
6888 raise errors.ProgrammerError("Unknown instance '%s' passed to"
6889 " IAllocator" % self.name)
6891 if instance.disk_template not in constants.DTS_NET_MIRROR:
6892 raise errors.OpPrereqError("Can't relocate non-mirrored instances")
6894 if len(instance.secondary_nodes) != 1:
6895 raise errors.OpPrereqError("Instance has not exactly one secondary node")
6897 self.required_nodes = 1
6898 disk_sizes = [{'size': disk.size} for disk in instance.disks]
6899 disk_space = _ComputeDiskSize(instance.disk_template, disk_sizes)
6904 "disk_space_total": disk_space,
6905 "required_nodes": self.required_nodes,
6906 "relocate_from": self.relocate_from,
6908 self.in_data["request"] = request
6910 def _BuildInputData(self):
6911 """Build input data structures.
6914 self._ComputeClusterData()
6916 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
6917 self._AddNewInstance()
6919 self._AddRelocateInstance()
6921 self.in_text = serializer.Dump(self.in_data)
6923 def Run(self, name, validate=True, call_fn=None):
6924 """Run an instance allocator and return the results.
6928 call_fn = self.lu.rpc.call_iallocator_runner
6931 result = call_fn(self.lu.cfg.GetMasterNode(), name, self.in_text)
6934 if not isinstance(result.data, (list, tuple)) or len(result.data) != 4:
6935 raise errors.OpExecError("Invalid result from master iallocator runner")
6937 rcode, stdout, stderr, fail = result.data
6939 if rcode == constants.IARUN_NOTFOUND:
6940 raise errors.OpExecError("Can't find allocator '%s'" % name)
6941 elif rcode == constants.IARUN_FAILURE:
6942 raise errors.OpExecError("Instance allocator call failed: %s,"
6943 " output: %s" % (fail, stdout+stderr))
6944 self.out_text = stdout
6946 self._ValidateResult()
6948 def _ValidateResult(self):
6949 """Process the allocator results.
6951 This will process and if successful save the result in
6952 self.out_data and the other parameters.
6956 rdict = serializer.Load(self.out_text)
6957 except Exception, err:
6958 raise errors.OpExecError("Can't parse iallocator results: %s" % str(err))
6960 if not isinstance(rdict, dict):
6961 raise errors.OpExecError("Can't parse iallocator results: not a dict")
6963 for key in "success", "info", "nodes":
6964 if key not in rdict:
6965 raise errors.OpExecError("Can't parse iallocator results:"
6966 " missing key '%s'" % key)
6967 setattr(self, key, rdict[key])
6969 if not isinstance(rdict["nodes"], list):
6970 raise errors.OpExecError("Can't parse iallocator results: 'nodes' key"
6972 self.out_data = rdict
6975 class LUTestAllocator(NoHooksLU):
6976 """Run allocator tests.
6978 This LU runs the allocator tests
6981 _OP_REQP = ["direction", "mode", "name"]
6983 def CheckPrereq(self):
6984 """Check prerequisites.
6986 This checks the opcode parameters depending on the director and mode test.
6989 if self.op.mode == constants.IALLOCATOR_MODE_ALLOC:
6990 for attr in ["name", "mem_size", "disks", "disk_template",
6991 "os", "tags", "nics", "vcpus"]:
6992 if not hasattr(self.op, attr):
6993 raise errors.OpPrereqError("Missing attribute '%s' on opcode input" %
6995 iname = self.cfg.ExpandInstanceName(self.op.name)
6996 if iname is not None:
6997 raise errors.OpPrereqError("Instance '%s' already in the cluster" %
6999 if not isinstance(self.op.nics, list):
7000 raise errors.OpPrereqError("Invalid parameter 'nics'")
7001 for row in self.op.nics:
7002 if (not isinstance(row, dict) or
7005 "bridge" not in row):
7006 raise errors.OpPrereqError("Invalid contents of the"
7007 " 'nics' parameter")
7008 if not isinstance(self.op.disks, list):
7009 raise errors.OpPrereqError("Invalid parameter 'disks'")
7010 for row in self.op.disks:
7011 if (not isinstance(row, dict) or
7012 "size" not in row or
7013 not isinstance(row["size"], int) or
7014 "mode" not in row or
7015 row["mode"] not in ['r', 'w']):
7016 raise errors.OpPrereqError("Invalid contents of the"
7017 " 'disks' parameter")
7018 if not hasattr(self.op, "hypervisor") or self.op.hypervisor is None:
7019 self.op.hypervisor = self.cfg.GetHypervisorType()
7020 elif self.op.mode == constants.IALLOCATOR_MODE_RELOC:
7021 if not hasattr(self.op, "name"):
7022 raise errors.OpPrereqError("Missing attribute 'name' on opcode input")
7023 fname = self.cfg.ExpandInstanceName(self.op.name)
7025 raise errors.OpPrereqError("Instance '%s' not found for relocation" %
7027 self.op.name = fname
7028 self.relocate_from = self.cfg.GetInstanceInfo(fname).secondary_nodes
7030 raise errors.OpPrereqError("Invalid test allocator mode '%s'" %
7033 if self.op.direction == constants.IALLOCATOR_DIR_OUT:
7034 if not hasattr(self.op, "allocator") or self.op.allocator is None:
7035 raise errors.OpPrereqError("Missing allocator name")
7036 elif self.op.direction != constants.IALLOCATOR_DIR_IN:
7037 raise errors.OpPrereqError("Wrong allocator test '%s'" %
7040 def Exec(self, feedback_fn):
7041 """Run the allocator test.
7044 if self.op.mode == constants.IALLOCATOR_MODE_ALLOC:
7045 ial = IAllocator(self,
7048 mem_size=self.op.mem_size,
7049 disks=self.op.disks,
7050 disk_template=self.op.disk_template,
7054 vcpus=self.op.vcpus,
7055 hypervisor=self.op.hypervisor,
7058 ial = IAllocator(self,
7061 relocate_from=list(self.relocate_from),
7064 if self.op.direction == constants.IALLOCATOR_DIR_IN:
7065 result = ial.in_text
7067 ial.Run(self.op.allocator, validate=False)
7068 result = ial.out_text