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=W0201
26 # W0201 since most LU attributes are defined in CheckPrereq or similar
37 from ganeti import ssh
38 from ganeti import utils
39 from ganeti import errors
40 from ganeti import hypervisor
41 from ganeti import locking
42 from ganeti import constants
43 from ganeti import objects
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 (except when tasklets are used)
54 - implement Exec (except when tasklets are used)
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.
62 @ivar dry_run_result: the value (if any) that will be returned to the caller
63 in dry-run mode (signalled by opcode dry_run parameter)
71 def __init__(self, processor, op, context, rpc):
72 """Constructor for LogicalUnit.
74 This needs to be overridden in derived classes in order to check op
80 self.cfg = context.cfg
81 self.context = context
83 # Dicts used to declare locking needs to mcpu
84 self.needed_locks = None
85 self.acquired_locks = {}
86 self.share_locks = dict.fromkeys(locking.LEVELS, 0)
88 self.remove_locks = {}
89 # Used to force good behavior when calling helper functions
90 self.recalculate_locks = {}
93 self.LogWarning = processor.LogWarning # pylint: disable-msg=C0103
94 self.LogInfo = processor.LogInfo # pylint: disable-msg=C0103
95 self.LogStep = processor.LogStep # pylint: disable-msg=C0103
97 self.dry_run_result = None
98 # support for generic debug attribute
99 if (not hasattr(self.op, "debug_level") or
100 not isinstance(self.op.debug_level, int)):
101 self.op.debug_level = 0
106 for attr_name in self._OP_REQP:
107 attr_val = getattr(op, attr_name, None)
109 raise errors.OpPrereqError("Required parameter '%s' missing" %
110 attr_name, errors.ECODE_INVAL)
112 self.CheckArguments()
115 """Returns the SshRunner object
119 self.__ssh = ssh.SshRunner(self.cfg.GetClusterName())
122 ssh = property(fget=__GetSSH)
124 def CheckArguments(self):
125 """Check syntactic validity for the opcode arguments.
127 This method is for doing a simple syntactic check and ensure
128 validity of opcode parameters, without any cluster-related
129 checks. While the same can be accomplished in ExpandNames and/or
130 CheckPrereq, doing these separate is better because:
132 - ExpandNames is left as as purely a lock-related function
133 - CheckPrereq is run after we have acquired locks (and possible
136 The function is allowed to change the self.op attribute so that
137 later methods can no longer worry about missing parameters.
142 def ExpandNames(self):
143 """Expand names for this LU.
145 This method is called before starting to execute the opcode, and it should
146 update all the parameters of the opcode to their canonical form (e.g. a
147 short node name must be fully expanded after this method has successfully
148 completed). This way locking, hooks, logging, ecc. can work correctly.
150 LUs which implement this method must also populate the self.needed_locks
151 member, as a dict with lock levels as keys, and a list of needed lock names
154 - use an empty dict if you don't need any lock
155 - if you don't need any lock at a particular level omit that level
156 - don't put anything for the BGL level
157 - if you want all locks at a level use locking.ALL_SET as a value
159 If you need to share locks (rather than acquire them exclusively) at one
160 level you can modify self.share_locks, setting a true value (usually 1) for
161 that level. By default locks are not shared.
163 This function can also define a list of tasklets, which then will be
164 executed in order instead of the usual LU-level CheckPrereq and Exec
165 functions, if those are not defined by the LU.
169 # Acquire all nodes and one instance
170 self.needed_locks = {
171 locking.LEVEL_NODE: locking.ALL_SET,
172 locking.LEVEL_INSTANCE: ['instance1.example.tld'],
174 # Acquire just two nodes
175 self.needed_locks = {
176 locking.LEVEL_NODE: ['node1.example.tld', 'node2.example.tld'],
179 self.needed_locks = {} # No, you can't leave it to the default value None
182 # The implementation of this method is mandatory only if the new LU is
183 # concurrent, so that old LUs don't need to be changed all at the same
186 self.needed_locks = {} # Exclusive LUs don't need locks.
188 raise NotImplementedError
190 def DeclareLocks(self, level):
191 """Declare LU locking needs for a level
193 While most LUs can just declare their locking needs at ExpandNames time,
194 sometimes there's the need to calculate some locks after having acquired
195 the ones before. This function is called just before acquiring locks at a
196 particular level, but after acquiring the ones at lower levels, and permits
197 such calculations. It can be used to modify self.needed_locks, and by
198 default it does nothing.
200 This function is only called if you have something already set in
201 self.needed_locks for the level.
203 @param level: Locking level which is going to be locked
204 @type level: member of ganeti.locking.LEVELS
208 def CheckPrereq(self):
209 """Check prerequisites for this LU.
211 This method should check that the prerequisites for the execution
212 of this LU are fulfilled. It can do internode communication, but
213 it should be idempotent - no cluster or system changes are
216 The method should raise errors.OpPrereqError in case something is
217 not fulfilled. Its return value is ignored.
219 This method should also update all the parameters of the opcode to
220 their canonical form if it hasn't been done by ExpandNames before.
223 if self.tasklets is not None:
224 for (idx, tl) in enumerate(self.tasklets):
225 logging.debug("Checking prerequisites for tasklet %s/%s",
226 idx + 1, len(self.tasklets))
229 raise NotImplementedError
231 def Exec(self, feedback_fn):
234 This method should implement the actual work. It should raise
235 errors.OpExecError for failures that are somewhat dealt with in
239 if self.tasklets is not None:
240 for (idx, tl) in enumerate(self.tasklets):
241 logging.debug("Executing tasklet %s/%s", idx + 1, len(self.tasklets))
244 raise NotImplementedError
246 def BuildHooksEnv(self):
247 """Build hooks environment for this LU.
249 This method should return a three-node tuple consisting of: a dict
250 containing the environment that will be used for running the
251 specific hook for this LU, a list of node names on which the hook
252 should run before the execution, and a list of node names on which
253 the hook should run after the execution.
255 The keys of the dict must not have 'GANETI_' prefixed as this will
256 be handled in the hooks runner. Also note additional keys will be
257 added by the hooks runner. If the LU doesn't define any
258 environment, an empty dict (and not None) should be returned.
260 No nodes should be returned as an empty list (and not None).
262 Note that if the HPATH for a LU class is None, this function will
266 raise NotImplementedError
268 def HooksCallBack(self, phase, hook_results, feedback_fn, lu_result):
269 """Notify the LU about the results of its hooks.
271 This method is called every time a hooks phase is executed, and notifies
272 the Logical Unit about the hooks' result. The LU can then use it to alter
273 its result based on the hooks. By default the method does nothing and the
274 previous result is passed back unchanged but any LU can define it if it
275 wants to use the local cluster hook-scripts somehow.
277 @param phase: one of L{constants.HOOKS_PHASE_POST} or
278 L{constants.HOOKS_PHASE_PRE}; it denotes the hooks phase
279 @param hook_results: the results of the multi-node hooks rpc call
280 @param feedback_fn: function used send feedback back to the caller
281 @param lu_result: the previous Exec result this LU had, or None
283 @return: the new Exec result, based on the previous result
287 # API must be kept, thus we ignore the unused argument and could
288 # be a function warnings
289 # pylint: disable-msg=W0613,R0201
292 def _ExpandAndLockInstance(self):
293 """Helper function to expand and lock an instance.
295 Many LUs that work on an instance take its name in self.op.instance_name
296 and need to expand it and then declare the expanded name for locking. This
297 function does it, and then updates self.op.instance_name to the expanded
298 name. It also initializes needed_locks as a dict, if this hasn't been done
302 if self.needed_locks is None:
303 self.needed_locks = {}
305 assert locking.LEVEL_INSTANCE not in self.needed_locks, \
306 "_ExpandAndLockInstance called with instance-level locks set"
307 self.op.instance_name = _ExpandInstanceName(self.cfg,
308 self.op.instance_name)
309 self.needed_locks[locking.LEVEL_INSTANCE] = self.op.instance_name
311 def _LockInstancesNodes(self, primary_only=False):
312 """Helper function to declare instances' nodes for locking.
314 This function should be called after locking one or more instances to lock
315 their nodes. Its effect is populating self.needed_locks[locking.LEVEL_NODE]
316 with all primary or secondary nodes for instances already locked and
317 present in self.needed_locks[locking.LEVEL_INSTANCE].
319 It should be called from DeclareLocks, and for safety only works if
320 self.recalculate_locks[locking.LEVEL_NODE] is set.
322 In the future it may grow parameters to just lock some instance's nodes, or
323 to just lock primaries or secondary nodes, if needed.
325 If should be called in DeclareLocks in a way similar to::
327 if level == locking.LEVEL_NODE:
328 self._LockInstancesNodes()
330 @type primary_only: boolean
331 @param primary_only: only lock primary nodes of locked instances
334 assert locking.LEVEL_NODE in self.recalculate_locks, \
335 "_LockInstancesNodes helper function called with no nodes to recalculate"
337 # TODO: check if we're really been called with the instance locks held
339 # For now we'll replace self.needed_locks[locking.LEVEL_NODE], but in the
340 # future we might want to have different behaviors depending on the value
341 # of self.recalculate_locks[locking.LEVEL_NODE]
343 for instance_name in self.acquired_locks[locking.LEVEL_INSTANCE]:
344 instance = self.context.cfg.GetInstanceInfo(instance_name)
345 wanted_nodes.append(instance.primary_node)
347 wanted_nodes.extend(instance.secondary_nodes)
349 if self.recalculate_locks[locking.LEVEL_NODE] == constants.LOCKS_REPLACE:
350 self.needed_locks[locking.LEVEL_NODE] = wanted_nodes
351 elif self.recalculate_locks[locking.LEVEL_NODE] == constants.LOCKS_APPEND:
352 self.needed_locks[locking.LEVEL_NODE].extend(wanted_nodes)
354 del self.recalculate_locks[locking.LEVEL_NODE]
357 class NoHooksLU(LogicalUnit): # pylint: disable-msg=W0223
358 """Simple LU which runs no hooks.
360 This LU is intended as a parent for other LogicalUnits which will
361 run no hooks, in order to reduce duplicate code.
367 def BuildHooksEnv(self):
368 """Empty BuildHooksEnv for NoHooksLu.
370 This just raises an error.
373 assert False, "BuildHooksEnv called for NoHooksLUs"
377 """Tasklet base class.
379 Tasklets are subcomponents for LUs. LUs can consist entirely of tasklets or
380 they can mix legacy code with tasklets. Locking needs to be done in the LU,
381 tasklets know nothing about locks.
383 Subclasses must follow these rules:
384 - Implement CheckPrereq
388 def __init__(self, lu):
395 def CheckPrereq(self):
396 """Check prerequisites for this tasklets.
398 This method should check whether the prerequisites for the execution of
399 this tasklet are fulfilled. It can do internode communication, but it
400 should be idempotent - no cluster or system changes are allowed.
402 The method should raise errors.OpPrereqError in case something is not
403 fulfilled. Its return value is ignored.
405 This method should also update all parameters to their canonical form if it
406 hasn't been done before.
409 raise NotImplementedError
411 def Exec(self, feedback_fn):
412 """Execute the tasklet.
414 This method should implement the actual work. It should raise
415 errors.OpExecError for failures that are somewhat dealt with in code, or
419 raise NotImplementedError
422 def _GetWantedNodes(lu, nodes):
423 """Returns list of checked and expanded node names.
425 @type lu: L{LogicalUnit}
426 @param lu: the logical unit on whose behalf we execute
428 @param nodes: list of node names or None for all nodes
430 @return: the list of nodes, sorted
431 @raise errors.ProgrammerError: if the nodes parameter is wrong type
434 if not isinstance(nodes, list):
435 raise errors.OpPrereqError("Invalid argument type 'nodes'",
439 raise errors.ProgrammerError("_GetWantedNodes should only be called with a"
440 " non-empty list of nodes whose name is to be expanded.")
442 wanted = [_ExpandNodeName(lu.cfg, name) for name in nodes]
443 return utils.NiceSort(wanted)
446 def _GetWantedInstances(lu, instances):
447 """Returns list of checked and expanded instance names.
449 @type lu: L{LogicalUnit}
450 @param lu: the logical unit on whose behalf we execute
451 @type instances: list
452 @param instances: list of instance names or None for all instances
454 @return: the list of instances, sorted
455 @raise errors.OpPrereqError: if the instances parameter is wrong type
456 @raise errors.OpPrereqError: if any of the passed instances is not found
459 if not isinstance(instances, list):
460 raise errors.OpPrereqError("Invalid argument type 'instances'",
464 wanted = [_ExpandInstanceName(lu.cfg, name) for name in instances]
466 wanted = utils.NiceSort(lu.cfg.GetInstanceList())
470 def _CheckOutputFields(static, dynamic, selected):
471 """Checks whether all selected fields are valid.
473 @type static: L{utils.FieldSet}
474 @param static: static fields set
475 @type dynamic: L{utils.FieldSet}
476 @param dynamic: dynamic fields set
483 delta = f.NonMatching(selected)
485 raise errors.OpPrereqError("Unknown output fields selected: %s"
486 % ",".join(delta), errors.ECODE_INVAL)
489 def _CheckBooleanOpField(op, name):
490 """Validates boolean opcode parameters.
492 This will ensure that an opcode parameter is either a boolean value,
493 or None (but that it always exists).
496 val = getattr(op, name, None)
497 if not (val is None or isinstance(val, bool)):
498 raise errors.OpPrereqError("Invalid boolean parameter '%s' (%s)" %
499 (name, str(val)), errors.ECODE_INVAL)
500 setattr(op, name, val)
503 def _CheckGlobalHvParams(params):
504 """Validates that given hypervisor params are not global ones.
506 This will ensure that instances don't get customised versions of
510 used_globals = constants.HVC_GLOBALS.intersection(params)
512 msg = ("The following hypervisor parameters are global and cannot"
513 " be customized at instance level, please modify them at"
514 " cluster level: %s" % utils.CommaJoin(used_globals))
515 raise errors.OpPrereqError(msg, errors.ECODE_INVAL)
518 def _CheckNodeOnline(lu, node):
519 """Ensure that a given node is online.
521 @param lu: the LU on behalf of which we make the check
522 @param node: the node to check
523 @raise errors.OpPrereqError: if the node is offline
526 if lu.cfg.GetNodeInfo(node).offline:
527 raise errors.OpPrereqError("Can't use offline node %s" % node,
531 def _CheckNodeNotDrained(lu, node):
532 """Ensure that a given node is not drained.
534 @param lu: the LU on behalf of which we make the check
535 @param node: the node to check
536 @raise errors.OpPrereqError: if the node is drained
539 if lu.cfg.GetNodeInfo(node).drained:
540 raise errors.OpPrereqError("Can't use drained node %s" % node,
544 def _ExpandItemName(fn, name, kind):
545 """Expand an item name.
547 @param fn: the function to use for expansion
548 @param name: requested item name
549 @param kind: text description ('Node' or 'Instance')
550 @return: the resolved (full) name
551 @raise errors.OpPrereqError: if the item is not found
555 if full_name is None:
556 raise errors.OpPrereqError("%s '%s' not known" % (kind, name),
561 def _ExpandNodeName(cfg, name):
562 """Wrapper over L{_ExpandItemName} for nodes."""
563 return _ExpandItemName(cfg.ExpandNodeName, name, "Node")
566 def _ExpandInstanceName(cfg, name):
567 """Wrapper over L{_ExpandItemName} for instance."""
568 return _ExpandItemName(cfg.ExpandInstanceName, name, "Instance")
571 def _BuildInstanceHookEnv(name, primary_node, secondary_nodes, os_type, status,
572 memory, vcpus, nics, disk_template, disks,
573 bep, hvp, hypervisor_name):
574 """Builds instance related env variables for hooks
576 This builds the hook environment from individual variables.
579 @param name: the name of the instance
580 @type primary_node: string
581 @param primary_node: the name of the instance's primary node
582 @type secondary_nodes: list
583 @param secondary_nodes: list of secondary nodes as strings
584 @type os_type: string
585 @param os_type: the name of the instance's OS
586 @type status: boolean
587 @param status: the should_run status of the instance
589 @param memory: the memory size of the instance
591 @param vcpus: the count of VCPUs the instance has
593 @param nics: list of tuples (ip, mac, mode, link) representing
594 the NICs the instance has
595 @type disk_template: string
596 @param disk_template: the disk template of the instance
598 @param disks: the list of (size, mode) pairs
600 @param bep: the backend parameters for the instance
602 @param hvp: the hypervisor parameters for the instance
603 @type hypervisor_name: string
604 @param hypervisor_name: the hypervisor for the instance
606 @return: the hook environment for this instance
615 "INSTANCE_NAME": name,
616 "INSTANCE_PRIMARY": primary_node,
617 "INSTANCE_SECONDARIES": " ".join(secondary_nodes),
618 "INSTANCE_OS_TYPE": os_type,
619 "INSTANCE_STATUS": str_status,
620 "INSTANCE_MEMORY": memory,
621 "INSTANCE_VCPUS": vcpus,
622 "INSTANCE_DISK_TEMPLATE": disk_template,
623 "INSTANCE_HYPERVISOR": hypervisor_name,
627 nic_count = len(nics)
628 for idx, (ip, mac, mode, link) in enumerate(nics):
631 env["INSTANCE_NIC%d_IP" % idx] = ip
632 env["INSTANCE_NIC%d_MAC" % idx] = mac
633 env["INSTANCE_NIC%d_MODE" % idx] = mode
634 env["INSTANCE_NIC%d_LINK" % idx] = link
635 if mode == constants.NIC_MODE_BRIDGED:
636 env["INSTANCE_NIC%d_BRIDGE" % idx] = link
640 env["INSTANCE_NIC_COUNT"] = nic_count
643 disk_count = len(disks)
644 for idx, (size, mode) in enumerate(disks):
645 env["INSTANCE_DISK%d_SIZE" % idx] = size
646 env["INSTANCE_DISK%d_MODE" % idx] = mode
650 env["INSTANCE_DISK_COUNT"] = disk_count
652 for source, kind in [(bep, "BE"), (hvp, "HV")]:
653 for key, value in source.items():
654 env["INSTANCE_%s_%s" % (kind, key)] = value
659 def _NICListToTuple(lu, nics):
660 """Build a list of nic information tuples.
662 This list is suitable to be passed to _BuildInstanceHookEnv or as a return
663 value in LUQueryInstanceData.
665 @type lu: L{LogicalUnit}
666 @param lu: the logical unit on whose behalf we execute
667 @type nics: list of L{objects.NIC}
668 @param nics: list of nics to convert to hooks tuples
672 c_nicparams = lu.cfg.GetClusterInfo().nicparams[constants.PP_DEFAULT]
676 filled_params = objects.FillDict(c_nicparams, nic.nicparams)
677 mode = filled_params[constants.NIC_MODE]
678 link = filled_params[constants.NIC_LINK]
679 hooks_nics.append((ip, mac, mode, link))
683 def _BuildInstanceHookEnvByObject(lu, instance, override=None):
684 """Builds instance related env variables for hooks from an object.
686 @type lu: L{LogicalUnit}
687 @param lu: the logical unit on whose behalf we execute
688 @type instance: L{objects.Instance}
689 @param instance: the instance for which we should build the
692 @param override: dictionary with key/values that will override
695 @return: the hook environment dictionary
698 cluster = lu.cfg.GetClusterInfo()
699 bep = cluster.FillBE(instance)
700 hvp = cluster.FillHV(instance)
702 'name': instance.name,
703 'primary_node': instance.primary_node,
704 'secondary_nodes': instance.secondary_nodes,
705 'os_type': instance.os,
706 'status': instance.admin_up,
707 'memory': bep[constants.BE_MEMORY],
708 'vcpus': bep[constants.BE_VCPUS],
709 'nics': _NICListToTuple(lu, instance.nics),
710 'disk_template': instance.disk_template,
711 'disks': [(disk.size, disk.mode) for disk in instance.disks],
714 'hypervisor_name': instance.hypervisor,
717 args.update(override)
718 return _BuildInstanceHookEnv(**args) # pylint: disable-msg=W0142
721 def _AdjustCandidatePool(lu, exceptions):
722 """Adjust the candidate pool after node operations.
725 mod_list = lu.cfg.MaintainCandidatePool(exceptions)
727 lu.LogInfo("Promoted nodes to master candidate role: %s",
728 utils.CommaJoin(node.name for node in mod_list))
729 for name in mod_list:
730 lu.context.ReaddNode(name)
731 mc_now, mc_max, _ = lu.cfg.GetMasterCandidateStats(exceptions)
733 lu.LogInfo("Note: more nodes are candidates (%d) than desired (%d)" %
737 def _DecideSelfPromotion(lu, exceptions=None):
738 """Decide whether I should promote myself as a master candidate.
741 cp_size = lu.cfg.GetClusterInfo().candidate_pool_size
742 mc_now, mc_should, _ = lu.cfg.GetMasterCandidateStats(exceptions)
743 # the new node will increase mc_max with one, so:
744 mc_should = min(mc_should + 1, cp_size)
745 return mc_now < mc_should
748 def _CheckNicsBridgesExist(lu, target_nics, target_node,
749 profile=constants.PP_DEFAULT):
750 """Check that the brigdes needed by a list of nics exist.
753 c_nicparams = lu.cfg.GetClusterInfo().nicparams[profile]
754 paramslist = [objects.FillDict(c_nicparams, nic.nicparams)
755 for nic in target_nics]
756 brlist = [params[constants.NIC_LINK] for params in paramslist
757 if params[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED]
759 result = lu.rpc.call_bridges_exist(target_node, brlist)
760 result.Raise("Error checking bridges on destination node '%s'" %
761 target_node, prereq=True, ecode=errors.ECODE_ENVIRON)
764 def _CheckInstanceBridgesExist(lu, instance, node=None):
765 """Check that the brigdes needed by an instance exist.
769 node = instance.primary_node
770 _CheckNicsBridgesExist(lu, instance.nics, node)
773 def _CheckOSVariant(os_obj, name):
774 """Check whether an OS name conforms to the os variants specification.
776 @type os_obj: L{objects.OS}
777 @param os_obj: OS object to check
779 @param name: OS name passed by the user, to check for validity
782 if not os_obj.supported_variants:
785 variant = name.split("+", 1)[1]
787 raise errors.OpPrereqError("OS name must include a variant",
790 if variant not in os_obj.supported_variants:
791 raise errors.OpPrereqError("Unsupported OS variant", errors.ECODE_INVAL)
794 def _GetNodeInstancesInner(cfg, fn):
795 return [i for i in cfg.GetAllInstancesInfo().values() if fn(i)]
798 def _GetNodeInstances(cfg, node_name):
799 """Returns a list of all primary and secondary instances on a node.
803 return _GetNodeInstancesInner(cfg, lambda inst: node_name in inst.all_nodes)
806 def _GetNodePrimaryInstances(cfg, node_name):
807 """Returns primary instances on a node.
810 return _GetNodeInstancesInner(cfg,
811 lambda inst: node_name == inst.primary_node)
814 def _GetNodeSecondaryInstances(cfg, node_name):
815 """Returns secondary instances on a node.
818 return _GetNodeInstancesInner(cfg,
819 lambda inst: node_name in inst.secondary_nodes)
822 def _GetStorageTypeArgs(cfg, storage_type):
823 """Returns the arguments for a storage type.
826 # Special case for file storage
827 if storage_type == constants.ST_FILE:
828 # storage.FileStorage wants a list of storage directories
829 return [[cfg.GetFileStorageDir()]]
834 def _FindFaultyInstanceDisks(cfg, rpc, instance, node_name, prereq):
837 for dev in instance.disks:
838 cfg.SetDiskID(dev, node_name)
840 result = rpc.call_blockdev_getmirrorstatus(node_name, instance.disks)
841 result.Raise("Failed to get disk status from node %s" % node_name,
842 prereq=prereq, ecode=errors.ECODE_ENVIRON)
844 for idx, bdev_status in enumerate(result.payload):
845 if bdev_status and bdev_status.ldisk_status == constants.LDS_FAULTY:
851 class LUPostInitCluster(LogicalUnit):
852 """Logical unit for running hooks after cluster initialization.
855 HPATH = "cluster-init"
856 HTYPE = constants.HTYPE_CLUSTER
859 def BuildHooksEnv(self):
863 env = {"OP_TARGET": self.cfg.GetClusterName()}
864 mn = self.cfg.GetMasterNode()
867 def CheckPrereq(self):
868 """No prerequisites to check.
873 def Exec(self, feedback_fn):
880 class LUDestroyCluster(LogicalUnit):
881 """Logical unit for destroying the cluster.
884 HPATH = "cluster-destroy"
885 HTYPE = constants.HTYPE_CLUSTER
888 def BuildHooksEnv(self):
892 env = {"OP_TARGET": self.cfg.GetClusterName()}
895 def CheckPrereq(self):
896 """Check prerequisites.
898 This checks whether the cluster is empty.
900 Any errors are signaled by raising errors.OpPrereqError.
903 master = self.cfg.GetMasterNode()
905 nodelist = self.cfg.GetNodeList()
906 if len(nodelist) != 1 or nodelist[0] != master:
907 raise errors.OpPrereqError("There are still %d node(s) in"
908 " this cluster." % (len(nodelist) - 1),
910 instancelist = self.cfg.GetInstanceList()
912 raise errors.OpPrereqError("There are still %d instance(s) in"
913 " this cluster." % len(instancelist),
916 def Exec(self, feedback_fn):
917 """Destroys the cluster.
920 master = self.cfg.GetMasterNode()
921 modify_ssh_setup = self.cfg.GetClusterInfo().modify_ssh_setup
923 # Run post hooks on master node before it's removed
924 hm = self.proc.hmclass(self.rpc.call_hooks_runner, self)
926 hm.RunPhase(constants.HOOKS_PHASE_POST, [master])
928 # pylint: disable-msg=W0702
929 self.LogWarning("Errors occurred running hooks on %s" % master)
931 result = self.rpc.call_node_stop_master(master, False)
932 result.Raise("Could not disable the master role")
935 priv_key, pub_key, _ = ssh.GetUserFiles(constants.GANETI_RUNAS)
936 utils.CreateBackup(priv_key)
937 utils.CreateBackup(pub_key)
942 class LUVerifyCluster(LogicalUnit):
943 """Verifies the cluster status.
946 HPATH = "cluster-verify"
947 HTYPE = constants.HTYPE_CLUSTER
948 _OP_REQP = ["skip_checks", "verbose", "error_codes", "debug_simulate_errors"]
953 TINSTANCE = "instance"
955 ECLUSTERCFG = (TCLUSTER, "ECLUSTERCFG")
956 EINSTANCEBADNODE = (TINSTANCE, "EINSTANCEBADNODE")
957 EINSTANCEDOWN = (TINSTANCE, "EINSTANCEDOWN")
958 EINSTANCELAYOUT = (TINSTANCE, "EINSTANCELAYOUT")
959 EINSTANCEMISSINGDISK = (TINSTANCE, "EINSTANCEMISSINGDISK")
960 EINSTANCEMISSINGDISK = (TINSTANCE, "EINSTANCEMISSINGDISK")
961 EINSTANCEWRONGNODE = (TINSTANCE, "EINSTANCEWRONGNODE")
962 ENODEDRBD = (TNODE, "ENODEDRBD")
963 ENODEFILECHECK = (TNODE, "ENODEFILECHECK")
964 ENODEHOOKS = (TNODE, "ENODEHOOKS")
965 ENODEHV = (TNODE, "ENODEHV")
966 ENODELVM = (TNODE, "ENODELVM")
967 ENODEN1 = (TNODE, "ENODEN1")
968 ENODENET = (TNODE, "ENODENET")
969 ENODEORPHANINSTANCE = (TNODE, "ENODEORPHANINSTANCE")
970 ENODEORPHANLV = (TNODE, "ENODEORPHANLV")
971 ENODERPC = (TNODE, "ENODERPC")
972 ENODESSH = (TNODE, "ENODESSH")
973 ENODEVERSION = (TNODE, "ENODEVERSION")
974 ENODESETUP = (TNODE, "ENODESETUP")
975 ENODETIME = (TNODE, "ENODETIME")
978 ETYPE_ERROR = "ERROR"
979 ETYPE_WARNING = "WARNING"
981 def ExpandNames(self):
982 self.needed_locks = {
983 locking.LEVEL_NODE: locking.ALL_SET,
984 locking.LEVEL_INSTANCE: locking.ALL_SET,
986 self.share_locks = dict.fromkeys(locking.LEVELS, 1)
988 def _Error(self, ecode, item, msg, *args, **kwargs):
989 """Format an error message.
991 Based on the opcode's error_codes parameter, either format a
992 parseable error code, or a simpler error string.
994 This must be called only from Exec and functions called from Exec.
997 ltype = kwargs.get(self.ETYPE_FIELD, self.ETYPE_ERROR)
999 # first complete the msg
1002 # then format the whole message
1003 if self.op.error_codes:
1004 msg = "%s:%s:%s:%s:%s" % (ltype, etxt, itype, item, msg)
1010 msg = "%s: %s%s: %s" % (ltype, itype, item, msg)
1011 # and finally report it via the feedback_fn
1012 self._feedback_fn(" - %s" % msg)
1014 def _ErrorIf(self, cond, *args, **kwargs):
1015 """Log an error message if the passed condition is True.
1018 cond = bool(cond) or self.op.debug_simulate_errors
1020 self._Error(*args, **kwargs)
1021 # do not mark the operation as failed for WARN cases only
1022 if kwargs.get(self.ETYPE_FIELD, self.ETYPE_ERROR) == self.ETYPE_ERROR:
1023 self.bad = self.bad or cond
1025 def _VerifyNode(self, nodeinfo, file_list, local_cksum,
1026 node_result, master_files, drbd_map, vg_name):
1027 """Run multiple tests against a node.
1031 - compares ganeti version
1032 - checks vg existence and size > 20G
1033 - checks config file checksum
1034 - checks ssh to other nodes
1036 @type nodeinfo: L{objects.Node}
1037 @param nodeinfo: the node to check
1038 @param file_list: required list of files
1039 @param local_cksum: dictionary of local files and their checksums
1040 @param node_result: the results from the node
1041 @param master_files: list of files that only masters should have
1042 @param drbd_map: the useddrbd minors for this node, in
1043 form of minor: (instance, must_exist) which correspond to instances
1044 and their running status
1045 @param vg_name: Ganeti Volume Group (result of self.cfg.GetVGName())
1048 node = nodeinfo.name
1049 _ErrorIf = self._ErrorIf # pylint: disable-msg=C0103
1051 # main result, node_result should be a non-empty dict
1052 test = not node_result or not isinstance(node_result, dict)
1053 _ErrorIf(test, self.ENODERPC, node,
1054 "unable to verify node: no data returned")
1058 # compares ganeti version
1059 local_version = constants.PROTOCOL_VERSION
1060 remote_version = node_result.get('version', None)
1061 test = not (remote_version and
1062 isinstance(remote_version, (list, tuple)) and
1063 len(remote_version) == 2)
1064 _ErrorIf(test, self.ENODERPC, node,
1065 "connection to node returned invalid data")
1069 test = local_version != remote_version[0]
1070 _ErrorIf(test, self.ENODEVERSION, node,
1071 "incompatible protocol versions: master %s,"
1072 " node %s", local_version, remote_version[0])
1076 # node seems compatible, we can actually try to look into its results
1078 # full package version
1079 self._ErrorIf(constants.RELEASE_VERSION != remote_version[1],
1080 self.ENODEVERSION, node,
1081 "software version mismatch: master %s, node %s",
1082 constants.RELEASE_VERSION, remote_version[1],
1083 code=self.ETYPE_WARNING)
1085 # checks vg existence and size > 20G
1086 if vg_name is not None:
1087 vglist = node_result.get(constants.NV_VGLIST, None)
1089 _ErrorIf(test, self.ENODELVM, node, "unable to check volume groups")
1091 vgstatus = utils.CheckVolumeGroupSize(vglist, vg_name,
1092 constants.MIN_VG_SIZE)
1093 _ErrorIf(vgstatus, self.ENODELVM, node, vgstatus)
1095 # checks config file checksum
1097 remote_cksum = node_result.get(constants.NV_FILELIST, None)
1098 test = not isinstance(remote_cksum, dict)
1099 _ErrorIf(test, self.ENODEFILECHECK, node,
1100 "node hasn't returned file checksum data")
1102 for file_name in file_list:
1103 node_is_mc = nodeinfo.master_candidate
1104 must_have = (file_name not in master_files) or node_is_mc
1106 test1 = file_name not in remote_cksum
1108 test2 = not test1 and remote_cksum[file_name] != local_cksum[file_name]
1110 test3 = not test1 and remote_cksum[file_name] == local_cksum[file_name]
1111 _ErrorIf(test1 and must_have, self.ENODEFILECHECK, node,
1112 "file '%s' missing", file_name)
1113 _ErrorIf(test2 and must_have, self.ENODEFILECHECK, node,
1114 "file '%s' has wrong checksum", file_name)
1115 # not candidate and this is not a must-have file
1116 _ErrorIf(test2 and not must_have, self.ENODEFILECHECK, node,
1117 "file '%s' should not exist on non master"
1118 " candidates (and the file is outdated)", file_name)
1119 # all good, except non-master/non-must have combination
1120 _ErrorIf(test3 and not must_have, self.ENODEFILECHECK, node,
1121 "file '%s' should not exist"
1122 " on non master candidates", file_name)
1126 test = constants.NV_NODELIST not in node_result
1127 _ErrorIf(test, self.ENODESSH, node,
1128 "node hasn't returned node ssh connectivity data")
1130 if node_result[constants.NV_NODELIST]:
1131 for a_node, a_msg in node_result[constants.NV_NODELIST].items():
1132 _ErrorIf(True, self.ENODESSH, node,
1133 "ssh communication with node '%s': %s", a_node, a_msg)
1135 test = constants.NV_NODENETTEST not in node_result
1136 _ErrorIf(test, self.ENODENET, node,
1137 "node hasn't returned node tcp connectivity data")
1139 if node_result[constants.NV_NODENETTEST]:
1140 nlist = utils.NiceSort(node_result[constants.NV_NODENETTEST].keys())
1142 _ErrorIf(True, self.ENODENET, node,
1143 "tcp communication with node '%s': %s",
1144 anode, node_result[constants.NV_NODENETTEST][anode])
1146 hyp_result = node_result.get(constants.NV_HYPERVISOR, None)
1147 if isinstance(hyp_result, dict):
1148 for hv_name, hv_result in hyp_result.iteritems():
1149 test = hv_result is not None
1150 _ErrorIf(test, self.ENODEHV, node,
1151 "hypervisor %s verify failure: '%s'", hv_name, hv_result)
1153 # check used drbd list
1154 if vg_name is not None:
1155 used_minors = node_result.get(constants.NV_DRBDLIST, [])
1156 test = not isinstance(used_minors, (tuple, list))
1157 _ErrorIf(test, self.ENODEDRBD, node,
1158 "cannot parse drbd status file: %s", str(used_minors))
1160 for minor, (iname, must_exist) in drbd_map.items():
1161 test = minor not in used_minors and must_exist
1162 _ErrorIf(test, self.ENODEDRBD, node,
1163 "drbd minor %d of instance %s is not active",
1165 for minor in used_minors:
1166 test = minor not in drbd_map
1167 _ErrorIf(test, self.ENODEDRBD, node,
1168 "unallocated drbd minor %d is in use", minor)
1169 test = node_result.get(constants.NV_NODESETUP,
1170 ["Missing NODESETUP results"])
1171 _ErrorIf(test, self.ENODESETUP, node, "node setup error: %s",
1175 if vg_name is not None:
1176 pvlist = node_result.get(constants.NV_PVLIST, None)
1177 test = pvlist is None
1178 _ErrorIf(test, self.ENODELVM, node, "Can't get PV list from node")
1180 # check that ':' is not present in PV names, since it's a
1181 # special character for lvcreate (denotes the range of PEs to
1183 for _, pvname, owner_vg in pvlist:
1184 test = ":" in pvname
1185 _ErrorIf(test, self.ENODELVM, node, "Invalid character ':' in PV"
1186 " '%s' of VG '%s'", pvname, owner_vg)
1188 def _VerifyInstance(self, instance, instanceconfig, node_vol_is,
1189 node_instance, n_offline):
1190 """Verify an instance.
1192 This function checks to see if the required block devices are
1193 available on the instance's node.
1196 _ErrorIf = self._ErrorIf # pylint: disable-msg=C0103
1197 node_current = instanceconfig.primary_node
1199 node_vol_should = {}
1200 instanceconfig.MapLVsByNode(node_vol_should)
1202 for node in node_vol_should:
1203 if node in n_offline:
1204 # ignore missing volumes on offline nodes
1206 for volume in node_vol_should[node]:
1207 test = node not in node_vol_is or volume not in node_vol_is[node]
1208 _ErrorIf(test, self.EINSTANCEMISSINGDISK, instance,
1209 "volume %s missing on node %s", volume, node)
1211 if instanceconfig.admin_up:
1212 test = ((node_current not in node_instance or
1213 not instance in node_instance[node_current]) and
1214 node_current not in n_offline)
1215 _ErrorIf(test, self.EINSTANCEDOWN, instance,
1216 "instance not running on its primary node %s",
1219 for node in node_instance:
1220 if (not node == node_current):
1221 test = instance in node_instance[node]
1222 _ErrorIf(test, self.EINSTANCEWRONGNODE, instance,
1223 "instance should not run on node %s", node)
1225 def _VerifyOrphanVolumes(self, node_vol_should, node_vol_is):
1226 """Verify if there are any unknown volumes in the cluster.
1228 The .os, .swap and backup volumes are ignored. All other volumes are
1229 reported as unknown.
1232 for node in node_vol_is:
1233 for volume in node_vol_is[node]:
1234 test = (node not in node_vol_should or
1235 volume not in node_vol_should[node])
1236 self._ErrorIf(test, self.ENODEORPHANLV, node,
1237 "volume %s is unknown", volume)
1239 def _VerifyOrphanInstances(self, instancelist, node_instance):
1240 """Verify the list of running instances.
1242 This checks what instances are running but unknown to the cluster.
1245 for node in node_instance:
1246 for o_inst in node_instance[node]:
1247 test = o_inst not in instancelist
1248 self._ErrorIf(test, self.ENODEORPHANINSTANCE, node,
1249 "instance %s on node %s should not exist", o_inst, node)
1251 def _VerifyNPlusOneMemory(self, node_info, instance_cfg):
1252 """Verify N+1 Memory Resilience.
1254 Check that if one single node dies we can still start all the instances it
1258 for node, nodeinfo in node_info.iteritems():
1259 # This code checks that every node which is now listed as secondary has
1260 # enough memory to host all instances it is supposed to should a single
1261 # other node in the cluster fail.
1262 # FIXME: not ready for failover to an arbitrary node
1263 # FIXME: does not support file-backed instances
1264 # WARNING: we currently take into account down instances as well as up
1265 # ones, considering that even if they're down someone might want to start
1266 # them even in the event of a node failure.
1267 for prinode, instances in nodeinfo['sinst-by-pnode'].iteritems():
1269 for instance in instances:
1270 bep = self.cfg.GetClusterInfo().FillBE(instance_cfg[instance])
1271 if bep[constants.BE_AUTO_BALANCE]:
1272 needed_mem += bep[constants.BE_MEMORY]
1273 test = nodeinfo['mfree'] < needed_mem
1274 self._ErrorIf(test, self.ENODEN1, node,
1275 "not enough memory on to accommodate"
1276 " failovers should peer node %s fail", prinode)
1278 def CheckPrereq(self):
1279 """Check prerequisites.
1281 Transform the list of checks we're going to skip into a set and check that
1282 all its members are valid.
1285 self.skip_set = frozenset(self.op.skip_checks)
1286 if not constants.VERIFY_OPTIONAL_CHECKS.issuperset(self.skip_set):
1287 raise errors.OpPrereqError("Invalid checks to be skipped specified",
1290 def BuildHooksEnv(self):
1293 Cluster-Verify hooks just ran in the post phase and their failure makes
1294 the output be logged in the verify output and the verification to fail.
1297 all_nodes = self.cfg.GetNodeList()
1299 "CLUSTER_TAGS": " ".join(self.cfg.GetClusterInfo().GetTags())
1301 for node in self.cfg.GetAllNodesInfo().values():
1302 env["NODE_TAGS_%s" % node.name] = " ".join(node.GetTags())
1304 return env, [], all_nodes
1306 def Exec(self, feedback_fn):
1307 """Verify integrity of cluster, performing various test on nodes.
1311 _ErrorIf = self._ErrorIf # pylint: disable-msg=C0103
1312 verbose = self.op.verbose
1313 self._feedback_fn = feedback_fn
1314 feedback_fn("* Verifying global settings")
1315 for msg in self.cfg.VerifyConfig():
1316 _ErrorIf(True, self.ECLUSTERCFG, None, msg)
1318 vg_name = self.cfg.GetVGName()
1319 hypervisors = self.cfg.GetClusterInfo().enabled_hypervisors
1320 nodelist = utils.NiceSort(self.cfg.GetNodeList())
1321 nodeinfo = [self.cfg.GetNodeInfo(nname) for nname in nodelist]
1322 instancelist = utils.NiceSort(self.cfg.GetInstanceList())
1323 instanceinfo = dict((iname, self.cfg.GetInstanceInfo(iname))
1324 for iname in instancelist)
1325 i_non_redundant = [] # Non redundant instances
1326 i_non_a_balanced = [] # Non auto-balanced instances
1327 n_offline = [] # List of offline nodes
1328 n_drained = [] # List of nodes being drained
1334 # FIXME: verify OS list
1335 # do local checksums
1336 master_files = [constants.CLUSTER_CONF_FILE]
1338 file_names = ssconf.SimpleStore().GetFileList()
1339 file_names.append(constants.SSL_CERT_FILE)
1340 file_names.append(constants.RAPI_CERT_FILE)
1341 file_names.extend(master_files)
1343 local_checksums = utils.FingerprintFiles(file_names)
1345 feedback_fn("* Gathering data (%d nodes)" % len(nodelist))
1346 node_verify_param = {
1347 constants.NV_FILELIST: file_names,
1348 constants.NV_NODELIST: [node.name for node in nodeinfo
1349 if not node.offline],
1350 constants.NV_HYPERVISOR: hypervisors,
1351 constants.NV_NODENETTEST: [(node.name, node.primary_ip,
1352 node.secondary_ip) for node in nodeinfo
1353 if not node.offline],
1354 constants.NV_INSTANCELIST: hypervisors,
1355 constants.NV_VERSION: None,
1356 constants.NV_HVINFO: self.cfg.GetHypervisorType(),
1357 constants.NV_NODESETUP: None,
1358 constants.NV_TIME: None,
1361 if vg_name is not None:
1362 node_verify_param[constants.NV_VGLIST] = None
1363 node_verify_param[constants.NV_LVLIST] = vg_name
1364 node_verify_param[constants.NV_PVLIST] = [vg_name]
1365 node_verify_param[constants.NV_DRBDLIST] = None
1367 # Due to the way our RPC system works, exact response times cannot be
1368 # guaranteed (e.g. a broken node could run into a timeout). By keeping the
1369 # time before and after executing the request, we can at least have a time
1371 nvinfo_starttime = time.time()
1372 all_nvinfo = self.rpc.call_node_verify(nodelist, node_verify_param,
1373 self.cfg.GetClusterName())
1374 nvinfo_endtime = time.time()
1376 cluster = self.cfg.GetClusterInfo()
1377 master_node = self.cfg.GetMasterNode()
1378 all_drbd_map = self.cfg.ComputeDRBDMap()
1380 feedback_fn("* Verifying node status")
1381 for node_i in nodeinfo:
1386 feedback_fn("* Skipping offline node %s" % (node,))
1387 n_offline.append(node)
1390 if node == master_node:
1392 elif node_i.master_candidate:
1393 ntype = "master candidate"
1394 elif node_i.drained:
1396 n_drained.append(node)
1400 feedback_fn("* Verifying node %s (%s)" % (node, ntype))
1402 msg = all_nvinfo[node].fail_msg
1403 _ErrorIf(msg, self.ENODERPC, node, "while contacting node: %s", msg)
1407 nresult = all_nvinfo[node].payload
1409 for minor, instance in all_drbd_map[node].items():
1410 test = instance not in instanceinfo
1411 _ErrorIf(test, self.ECLUSTERCFG, None,
1412 "ghost instance '%s' in temporary DRBD map", instance)
1413 # ghost instance should not be running, but otherwise we
1414 # don't give double warnings (both ghost instance and
1415 # unallocated minor in use)
1417 node_drbd[minor] = (instance, False)
1419 instance = instanceinfo[instance]
1420 node_drbd[minor] = (instance.name, instance.admin_up)
1422 self._VerifyNode(node_i, file_names, local_checksums,
1423 nresult, master_files, node_drbd, vg_name)
1425 lvdata = nresult.get(constants.NV_LVLIST, "Missing LV data")
1427 node_volume[node] = {}
1428 elif isinstance(lvdata, basestring):
1429 _ErrorIf(True, self.ENODELVM, node, "LVM problem on node: %s",
1430 utils.SafeEncode(lvdata))
1431 node_volume[node] = {}
1432 elif not isinstance(lvdata, dict):
1433 _ErrorIf(True, self.ENODELVM, node, "rpc call to node failed (lvlist)")
1436 node_volume[node] = lvdata
1439 idata = nresult.get(constants.NV_INSTANCELIST, None)
1440 test = not isinstance(idata, list)
1441 _ErrorIf(test, self.ENODEHV, node,
1442 "rpc call to node failed (instancelist)")
1446 node_instance[node] = idata
1449 nodeinfo = nresult.get(constants.NV_HVINFO, None)
1450 test = not isinstance(nodeinfo, dict)
1451 _ErrorIf(test, self.ENODEHV, node, "rpc call to node failed (hvinfo)")
1456 ntime = nresult.get(constants.NV_TIME, None)
1458 ntime_merged = utils.MergeTime(ntime)
1459 except (ValueError, TypeError):
1460 _ErrorIf(True, self.ENODETIME, node, "Node returned invalid time")
1462 if ntime_merged < (nvinfo_starttime - constants.NODE_MAX_CLOCK_SKEW):
1463 ntime_diff = abs(nvinfo_starttime - ntime_merged)
1464 elif ntime_merged > (nvinfo_endtime + constants.NODE_MAX_CLOCK_SKEW):
1465 ntime_diff = abs(ntime_merged - nvinfo_endtime)
1469 _ErrorIf(ntime_diff is not None, self.ENODETIME, node,
1470 "Node time diverges by at least %0.1fs from master node time",
1473 if ntime_diff is not None:
1478 "mfree": int(nodeinfo['memory_free']),
1481 # dictionary holding all instances this node is secondary for,
1482 # grouped by their primary node. Each key is a cluster node, and each
1483 # value is a list of instances which have the key as primary and the
1484 # current node as secondary. this is handy to calculate N+1 memory
1485 # availability if you can only failover from a primary to its
1487 "sinst-by-pnode": {},
1489 # FIXME: devise a free space model for file based instances as well
1490 if vg_name is not None:
1491 test = (constants.NV_VGLIST not in nresult or
1492 vg_name not in nresult[constants.NV_VGLIST])
1493 _ErrorIf(test, self.ENODELVM, node,
1494 "node didn't return data for the volume group '%s'"
1495 " - it is either missing or broken", vg_name)
1498 node_info[node]["dfree"] = int(nresult[constants.NV_VGLIST][vg_name])
1499 except (ValueError, KeyError):
1500 _ErrorIf(True, self.ENODERPC, node,
1501 "node returned invalid nodeinfo, check lvm/hypervisor")
1504 node_vol_should = {}
1506 feedback_fn("* Verifying instance status")
1507 for instance in instancelist:
1509 feedback_fn("* Verifying instance %s" % instance)
1510 inst_config = instanceinfo[instance]
1511 self._VerifyInstance(instance, inst_config, node_volume,
1512 node_instance, n_offline)
1513 inst_nodes_offline = []
1515 inst_config.MapLVsByNode(node_vol_should)
1517 instance_cfg[instance] = inst_config
1519 pnode = inst_config.primary_node
1520 _ErrorIf(pnode not in node_info and pnode not in n_offline,
1521 self.ENODERPC, pnode, "instance %s, connection to"
1522 " primary node failed", instance)
1523 if pnode in node_info:
1524 node_info[pnode]['pinst'].append(instance)
1526 if pnode in n_offline:
1527 inst_nodes_offline.append(pnode)
1529 # If the instance is non-redundant we cannot survive losing its primary
1530 # node, so we are not N+1 compliant. On the other hand we have no disk
1531 # templates with more than one secondary so that situation is not well
1533 # FIXME: does not support file-backed instances
1534 if len(inst_config.secondary_nodes) == 0:
1535 i_non_redundant.append(instance)
1536 _ErrorIf(len(inst_config.secondary_nodes) > 1,
1537 self.EINSTANCELAYOUT, instance,
1538 "instance has multiple secondary nodes", code="WARNING")
1540 if not cluster.FillBE(inst_config)[constants.BE_AUTO_BALANCE]:
1541 i_non_a_balanced.append(instance)
1543 for snode in inst_config.secondary_nodes:
1544 _ErrorIf(snode not in node_info and snode not in n_offline,
1545 self.ENODERPC, snode,
1546 "instance %s, connection to secondary node"
1549 if snode in node_info:
1550 node_info[snode]['sinst'].append(instance)
1551 if pnode not in node_info[snode]['sinst-by-pnode']:
1552 node_info[snode]['sinst-by-pnode'][pnode] = []
1553 node_info[snode]['sinst-by-pnode'][pnode].append(instance)
1555 if snode in n_offline:
1556 inst_nodes_offline.append(snode)
1558 # warn that the instance lives on offline nodes
1559 _ErrorIf(inst_nodes_offline, self.EINSTANCEBADNODE, instance,
1560 "instance lives on offline node(s) %s",
1561 utils.CommaJoin(inst_nodes_offline))
1563 feedback_fn("* Verifying orphan volumes")
1564 self._VerifyOrphanVolumes(node_vol_should, node_volume)
1566 feedback_fn("* Verifying remaining instances")
1567 self._VerifyOrphanInstances(instancelist, node_instance)
1569 if constants.VERIFY_NPLUSONE_MEM not in self.skip_set:
1570 feedback_fn("* Verifying N+1 Memory redundancy")
1571 self._VerifyNPlusOneMemory(node_info, instance_cfg)
1573 feedback_fn("* Other Notes")
1575 feedback_fn(" - NOTICE: %d non-redundant instance(s) found."
1576 % len(i_non_redundant))
1578 if i_non_a_balanced:
1579 feedback_fn(" - NOTICE: %d non-auto-balanced instance(s) found."
1580 % len(i_non_a_balanced))
1583 feedback_fn(" - NOTICE: %d offline node(s) found." % len(n_offline))
1586 feedback_fn(" - NOTICE: %d drained node(s) found." % len(n_drained))
1590 def HooksCallBack(self, phase, hooks_results, feedback_fn, lu_result):
1591 """Analyze the post-hooks' result
1593 This method analyses the hook result, handles it, and sends some
1594 nicely-formatted feedback back to the user.
1596 @param phase: one of L{constants.HOOKS_PHASE_POST} or
1597 L{constants.HOOKS_PHASE_PRE}; it denotes the hooks phase
1598 @param hooks_results: the results of the multi-node hooks rpc call
1599 @param feedback_fn: function used send feedback back to the caller
1600 @param lu_result: previous Exec result
1601 @return: the new Exec result, based on the previous result
1605 # We only really run POST phase hooks, and are only interested in
1607 if phase == constants.HOOKS_PHASE_POST:
1608 # Used to change hooks' output to proper indentation
1609 indent_re = re.compile('^', re.M)
1610 feedback_fn("* Hooks Results")
1611 assert hooks_results, "invalid result from hooks"
1613 for node_name in hooks_results:
1614 res = hooks_results[node_name]
1616 test = msg and not res.offline
1617 self._ErrorIf(test, self.ENODEHOOKS, node_name,
1618 "Communication failure in hooks execution: %s", msg)
1619 if res.offline or msg:
1620 # No need to investigate payload if node is offline or gave an error.
1621 # override manually lu_result here as _ErrorIf only
1622 # overrides self.bad
1625 for script, hkr, output in res.payload:
1626 test = hkr == constants.HKR_FAIL
1627 self._ErrorIf(test, self.ENODEHOOKS, node_name,
1628 "Script %s failed, output:", script)
1630 output = indent_re.sub(' ', output)
1631 feedback_fn("%s" % output)
1637 class LUVerifyDisks(NoHooksLU):
1638 """Verifies the cluster disks status.
1644 def ExpandNames(self):
1645 self.needed_locks = {
1646 locking.LEVEL_NODE: locking.ALL_SET,
1647 locking.LEVEL_INSTANCE: locking.ALL_SET,
1649 self.share_locks = dict.fromkeys(locking.LEVELS, 1)
1651 def CheckPrereq(self):
1652 """Check prerequisites.
1654 This has no prerequisites.
1659 def Exec(self, feedback_fn):
1660 """Verify integrity of cluster disks.
1662 @rtype: tuple of three items
1663 @return: a tuple of (dict of node-to-node_error, list of instances
1664 which need activate-disks, dict of instance: (node, volume) for
1668 result = res_nodes, res_instances, res_missing = {}, [], {}
1670 vg_name = self.cfg.GetVGName()
1671 nodes = utils.NiceSort(self.cfg.GetNodeList())
1672 instances = [self.cfg.GetInstanceInfo(name)
1673 for name in self.cfg.GetInstanceList()]
1676 for inst in instances:
1678 if (not inst.admin_up or
1679 inst.disk_template not in constants.DTS_NET_MIRROR):
1681 inst.MapLVsByNode(inst_lvs)
1682 # transform { iname: {node: [vol,],},} to {(node, vol): iname}
1683 for node, vol_list in inst_lvs.iteritems():
1684 for vol in vol_list:
1685 nv_dict[(node, vol)] = inst
1690 node_lvs = self.rpc.call_lv_list(nodes, vg_name)
1694 node_res = node_lvs[node]
1695 if node_res.offline:
1697 msg = node_res.fail_msg
1699 logging.warning("Error enumerating LVs on node %s: %s", node, msg)
1700 res_nodes[node] = msg
1703 lvs = node_res.payload
1704 for lv_name, (_, _, lv_online) in lvs.items():
1705 inst = nv_dict.pop((node, lv_name), None)
1706 if (not lv_online and inst is not None
1707 and inst.name not in res_instances):
1708 res_instances.append(inst.name)
1710 # any leftover items in nv_dict are missing LVs, let's arrange the
1712 for key, inst in nv_dict.iteritems():
1713 if inst.name not in res_missing:
1714 res_missing[inst.name] = []
1715 res_missing[inst.name].append(key)
1720 class LURepairDiskSizes(NoHooksLU):
1721 """Verifies the cluster disks sizes.
1724 _OP_REQP = ["instances"]
1727 def ExpandNames(self):
1728 if not isinstance(self.op.instances, list):
1729 raise errors.OpPrereqError("Invalid argument type 'instances'",
1732 if self.op.instances:
1733 self.wanted_names = []
1734 for name in self.op.instances:
1735 full_name = _ExpandInstanceName(self.cfg, name)
1736 self.wanted_names.append(full_name)
1737 self.needed_locks = {
1738 locking.LEVEL_NODE: [],
1739 locking.LEVEL_INSTANCE: self.wanted_names,
1741 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
1743 self.wanted_names = None
1744 self.needed_locks = {
1745 locking.LEVEL_NODE: locking.ALL_SET,
1746 locking.LEVEL_INSTANCE: locking.ALL_SET,
1748 self.share_locks = dict(((i, 1) for i in locking.LEVELS))
1750 def DeclareLocks(self, level):
1751 if level == locking.LEVEL_NODE and self.wanted_names is not None:
1752 self._LockInstancesNodes(primary_only=True)
1754 def CheckPrereq(self):
1755 """Check prerequisites.
1757 This only checks the optional instance list against the existing names.
1760 if self.wanted_names is None:
1761 self.wanted_names = self.acquired_locks[locking.LEVEL_INSTANCE]
1763 self.wanted_instances = [self.cfg.GetInstanceInfo(name) for name
1764 in self.wanted_names]
1766 def _EnsureChildSizes(self, disk):
1767 """Ensure children of the disk have the needed disk size.
1769 This is valid mainly for DRBD8 and fixes an issue where the
1770 children have smaller disk size.
1772 @param disk: an L{ganeti.objects.Disk} object
1775 if disk.dev_type == constants.LD_DRBD8:
1776 assert disk.children, "Empty children for DRBD8?"
1777 fchild = disk.children[0]
1778 mismatch = fchild.size < disk.size
1780 self.LogInfo("Child disk has size %d, parent %d, fixing",
1781 fchild.size, disk.size)
1782 fchild.size = disk.size
1784 # and we recurse on this child only, not on the metadev
1785 return self._EnsureChildSizes(fchild) or mismatch
1789 def Exec(self, feedback_fn):
1790 """Verify the size of cluster disks.
1793 # TODO: check child disks too
1794 # TODO: check differences in size between primary/secondary nodes
1796 for instance in self.wanted_instances:
1797 pnode = instance.primary_node
1798 if pnode not in per_node_disks:
1799 per_node_disks[pnode] = []
1800 for idx, disk in enumerate(instance.disks):
1801 per_node_disks[pnode].append((instance, idx, disk))
1804 for node, dskl in per_node_disks.items():
1805 newl = [v[2].Copy() for v in dskl]
1807 self.cfg.SetDiskID(dsk, node)
1808 result = self.rpc.call_blockdev_getsizes(node, newl)
1810 self.LogWarning("Failure in blockdev_getsizes call to node"
1811 " %s, ignoring", node)
1813 if len(result.data) != len(dskl):
1814 self.LogWarning("Invalid result from node %s, ignoring node results",
1817 for ((instance, idx, disk), size) in zip(dskl, result.data):
1819 self.LogWarning("Disk %d of instance %s did not return size"
1820 " information, ignoring", idx, instance.name)
1822 if not isinstance(size, (int, long)):
1823 self.LogWarning("Disk %d of instance %s did not return valid"
1824 " size information, ignoring", idx, instance.name)
1827 if size != disk.size:
1828 self.LogInfo("Disk %d of instance %s has mismatched size,"
1829 " correcting: recorded %d, actual %d", idx,
1830 instance.name, disk.size, size)
1832 self.cfg.Update(instance, feedback_fn)
1833 changed.append((instance.name, idx, size))
1834 if self._EnsureChildSizes(disk):
1835 self.cfg.Update(instance, feedback_fn)
1836 changed.append((instance.name, idx, disk.size))
1840 class LURenameCluster(LogicalUnit):
1841 """Rename the cluster.
1844 HPATH = "cluster-rename"
1845 HTYPE = constants.HTYPE_CLUSTER
1848 def BuildHooksEnv(self):
1853 "OP_TARGET": self.cfg.GetClusterName(),
1854 "NEW_NAME": self.op.name,
1856 mn = self.cfg.GetMasterNode()
1857 all_nodes = self.cfg.GetNodeList()
1858 return env, [mn], all_nodes
1860 def CheckPrereq(self):
1861 """Verify that the passed name is a valid one.
1864 hostname = utils.GetHostInfo(self.op.name)
1866 new_name = hostname.name
1867 self.ip = new_ip = hostname.ip
1868 old_name = self.cfg.GetClusterName()
1869 old_ip = self.cfg.GetMasterIP()
1870 if new_name == old_name and new_ip == old_ip:
1871 raise errors.OpPrereqError("Neither the name nor the IP address of the"
1872 " cluster has changed",
1874 if new_ip != old_ip:
1875 if utils.TcpPing(new_ip, constants.DEFAULT_NODED_PORT):
1876 raise errors.OpPrereqError("The given cluster IP address (%s) is"
1877 " reachable on the network. Aborting." %
1878 new_ip, errors.ECODE_NOTUNIQUE)
1880 self.op.name = new_name
1882 def Exec(self, feedback_fn):
1883 """Rename the cluster.
1886 clustername = self.op.name
1889 # shutdown the master IP
1890 master = self.cfg.GetMasterNode()
1891 result = self.rpc.call_node_stop_master(master, False)
1892 result.Raise("Could not disable the master role")
1895 cluster = self.cfg.GetClusterInfo()
1896 cluster.cluster_name = clustername
1897 cluster.master_ip = ip
1898 self.cfg.Update(cluster, feedback_fn)
1900 # update the known hosts file
1901 ssh.WriteKnownHostsFile(self.cfg, constants.SSH_KNOWN_HOSTS_FILE)
1902 node_list = self.cfg.GetNodeList()
1904 node_list.remove(master)
1907 result = self.rpc.call_upload_file(node_list,
1908 constants.SSH_KNOWN_HOSTS_FILE)
1909 for to_node, to_result in result.iteritems():
1910 msg = to_result.fail_msg
1912 msg = ("Copy of file %s to node %s failed: %s" %
1913 (constants.SSH_KNOWN_HOSTS_FILE, to_node, msg))
1914 self.proc.LogWarning(msg)
1917 result = self.rpc.call_node_start_master(master, False, False)
1918 msg = result.fail_msg
1920 self.LogWarning("Could not re-enable the master role on"
1921 " the master, please restart manually: %s", msg)
1924 def _RecursiveCheckIfLVMBased(disk):
1925 """Check if the given disk or its children are lvm-based.
1927 @type disk: L{objects.Disk}
1928 @param disk: the disk to check
1930 @return: boolean indicating whether a LD_LV dev_type was found or not
1934 for chdisk in disk.children:
1935 if _RecursiveCheckIfLVMBased(chdisk):
1937 return disk.dev_type == constants.LD_LV
1940 class LUSetClusterParams(LogicalUnit):
1941 """Change the parameters of the cluster.
1944 HPATH = "cluster-modify"
1945 HTYPE = constants.HTYPE_CLUSTER
1949 def CheckArguments(self):
1953 if not hasattr(self.op, "candidate_pool_size"):
1954 self.op.candidate_pool_size = None
1955 if self.op.candidate_pool_size is not None:
1957 self.op.candidate_pool_size = int(self.op.candidate_pool_size)
1958 except (ValueError, TypeError), err:
1959 raise errors.OpPrereqError("Invalid candidate_pool_size value: %s" %
1960 str(err), errors.ECODE_INVAL)
1961 if self.op.candidate_pool_size < 1:
1962 raise errors.OpPrereqError("At least one master candidate needed",
1965 def ExpandNames(self):
1966 # FIXME: in the future maybe other cluster params won't require checking on
1967 # all nodes to be modified.
1968 self.needed_locks = {
1969 locking.LEVEL_NODE: locking.ALL_SET,
1971 self.share_locks[locking.LEVEL_NODE] = 1
1973 def BuildHooksEnv(self):
1978 "OP_TARGET": self.cfg.GetClusterName(),
1979 "NEW_VG_NAME": self.op.vg_name,
1981 mn = self.cfg.GetMasterNode()
1982 return env, [mn], [mn]
1984 def CheckPrereq(self):
1985 """Check prerequisites.
1987 This checks whether the given params don't conflict and
1988 if the given volume group is valid.
1991 if self.op.vg_name is not None and not self.op.vg_name:
1992 instances = self.cfg.GetAllInstancesInfo().values()
1993 for inst in instances:
1994 for disk in inst.disks:
1995 if _RecursiveCheckIfLVMBased(disk):
1996 raise errors.OpPrereqError("Cannot disable lvm storage while"
1997 " lvm-based instances exist",
2000 node_list = self.acquired_locks[locking.LEVEL_NODE]
2002 # if vg_name not None, checks given volume group on all nodes
2004 vglist = self.rpc.call_vg_list(node_list)
2005 for node in node_list:
2006 msg = vglist[node].fail_msg
2008 # ignoring down node
2009 self.LogWarning("Error while gathering data on node %s"
2010 " (ignoring node): %s", node, msg)
2012 vgstatus = utils.CheckVolumeGroupSize(vglist[node].payload,
2014 constants.MIN_VG_SIZE)
2016 raise errors.OpPrereqError("Error on node '%s': %s" %
2017 (node, vgstatus), errors.ECODE_ENVIRON)
2019 self.cluster = cluster = self.cfg.GetClusterInfo()
2020 # validate params changes
2021 if self.op.beparams:
2022 utils.ForceDictType(self.op.beparams, constants.BES_PARAMETER_TYPES)
2023 self.new_beparams = objects.FillDict(
2024 cluster.beparams[constants.PP_DEFAULT], self.op.beparams)
2026 if self.op.nicparams:
2027 utils.ForceDictType(self.op.nicparams, constants.NICS_PARAMETER_TYPES)
2028 self.new_nicparams = objects.FillDict(
2029 cluster.nicparams[constants.PP_DEFAULT], self.op.nicparams)
2030 objects.NIC.CheckParameterSyntax(self.new_nicparams)
2033 # check all instances for consistency
2034 for instance in self.cfg.GetAllInstancesInfo().values():
2035 for nic_idx, nic in enumerate(instance.nics):
2036 params_copy = copy.deepcopy(nic.nicparams)
2037 params_filled = objects.FillDict(self.new_nicparams, params_copy)
2039 # check parameter syntax
2041 objects.NIC.CheckParameterSyntax(params_filled)
2042 except errors.ConfigurationError, err:
2043 nic_errors.append("Instance %s, nic/%d: %s" %
2044 (instance.name, nic_idx, err))
2046 # if we're moving instances to routed, check that they have an ip
2047 target_mode = params_filled[constants.NIC_MODE]
2048 if target_mode == constants.NIC_MODE_ROUTED and not nic.ip:
2049 nic_errors.append("Instance %s, nic/%d: routed nick with no ip" %
2050 (instance.name, nic_idx))
2052 raise errors.OpPrereqError("Cannot apply the change, errors:\n%s" %
2053 "\n".join(nic_errors))
2055 # hypervisor list/parameters
2056 self.new_hvparams = objects.FillDict(cluster.hvparams, {})
2057 if self.op.hvparams:
2058 if not isinstance(self.op.hvparams, dict):
2059 raise errors.OpPrereqError("Invalid 'hvparams' parameter on input",
2061 for hv_name, hv_dict in self.op.hvparams.items():
2062 if hv_name not in self.new_hvparams:
2063 self.new_hvparams[hv_name] = hv_dict
2065 self.new_hvparams[hv_name].update(hv_dict)
2067 if self.op.enabled_hypervisors is not None:
2068 self.hv_list = self.op.enabled_hypervisors
2069 if not self.hv_list:
2070 raise errors.OpPrereqError("Enabled hypervisors list must contain at"
2071 " least one member",
2073 invalid_hvs = set(self.hv_list) - constants.HYPER_TYPES
2075 raise errors.OpPrereqError("Enabled hypervisors contains invalid"
2077 utils.CommaJoin(invalid_hvs),
2080 self.hv_list = cluster.enabled_hypervisors
2082 if self.op.hvparams or self.op.enabled_hypervisors is not None:
2083 # either the enabled list has changed, or the parameters have, validate
2084 for hv_name, hv_params in self.new_hvparams.items():
2085 if ((self.op.hvparams and hv_name in self.op.hvparams) or
2086 (self.op.enabled_hypervisors and
2087 hv_name in self.op.enabled_hypervisors)):
2088 # either this is a new hypervisor, or its parameters have changed
2089 hv_class = hypervisor.GetHypervisor(hv_name)
2090 utils.ForceDictType(hv_params, constants.HVS_PARAMETER_TYPES)
2091 hv_class.CheckParameterSyntax(hv_params)
2092 _CheckHVParams(self, node_list, hv_name, hv_params)
2094 def Exec(self, feedback_fn):
2095 """Change the parameters of the cluster.
2098 if self.op.vg_name is not None:
2099 new_volume = self.op.vg_name
2102 if new_volume != self.cfg.GetVGName():
2103 self.cfg.SetVGName(new_volume)
2105 feedback_fn("Cluster LVM configuration already in desired"
2106 " state, not changing")
2107 if self.op.hvparams:
2108 self.cluster.hvparams = self.new_hvparams
2109 if self.op.enabled_hypervisors is not None:
2110 self.cluster.enabled_hypervisors = self.op.enabled_hypervisors
2111 if self.op.beparams:
2112 self.cluster.beparams[constants.PP_DEFAULT] = self.new_beparams
2113 if self.op.nicparams:
2114 self.cluster.nicparams[constants.PP_DEFAULT] = self.new_nicparams
2116 if self.op.candidate_pool_size is not None:
2117 self.cluster.candidate_pool_size = self.op.candidate_pool_size
2118 # we need to update the pool size here, otherwise the save will fail
2119 _AdjustCandidatePool(self, [])
2121 self.cfg.Update(self.cluster, feedback_fn)
2124 def _RedistributeAncillaryFiles(lu, additional_nodes=None):
2125 """Distribute additional files which are part of the cluster configuration.
2127 ConfigWriter takes care of distributing the config and ssconf files, but
2128 there are more files which should be distributed to all nodes. This function
2129 makes sure those are copied.
2131 @param lu: calling logical unit
2132 @param additional_nodes: list of nodes not in the config to distribute to
2135 # 1. Gather target nodes
2136 myself = lu.cfg.GetNodeInfo(lu.cfg.GetMasterNode())
2137 dist_nodes = lu.cfg.GetNodeList()
2138 if additional_nodes is not None:
2139 dist_nodes.extend(additional_nodes)
2140 if myself.name in dist_nodes:
2141 dist_nodes.remove(myself.name)
2143 # 2. Gather files to distribute
2144 dist_files = set([constants.ETC_HOSTS,
2145 constants.SSH_KNOWN_HOSTS_FILE,
2146 constants.RAPI_CERT_FILE,
2147 constants.RAPI_USERS_FILE,
2148 constants.HMAC_CLUSTER_KEY,
2151 enabled_hypervisors = lu.cfg.GetClusterInfo().enabled_hypervisors
2152 for hv_name in enabled_hypervisors:
2153 hv_class = hypervisor.GetHypervisor(hv_name)
2154 dist_files.update(hv_class.GetAncillaryFiles())
2156 # 3. Perform the files upload
2157 for fname in dist_files:
2158 if os.path.exists(fname):
2159 result = lu.rpc.call_upload_file(dist_nodes, fname)
2160 for to_node, to_result in result.items():
2161 msg = to_result.fail_msg
2163 msg = ("Copy of file %s to node %s failed: %s" %
2164 (fname, to_node, msg))
2165 lu.proc.LogWarning(msg)
2168 class LURedistributeConfig(NoHooksLU):
2169 """Force the redistribution of cluster configuration.
2171 This is a very simple LU.
2177 def ExpandNames(self):
2178 self.needed_locks = {
2179 locking.LEVEL_NODE: locking.ALL_SET,
2181 self.share_locks[locking.LEVEL_NODE] = 1
2183 def CheckPrereq(self):
2184 """Check prerequisites.
2188 def Exec(self, feedback_fn):
2189 """Redistribute the configuration.
2192 self.cfg.Update(self.cfg.GetClusterInfo(), feedback_fn)
2193 _RedistributeAncillaryFiles(self)
2196 def _WaitForSync(lu, instance, oneshot=False):
2197 """Sleep and poll for an instance's disk to sync.
2200 if not instance.disks:
2204 lu.proc.LogInfo("Waiting for instance %s to sync disks." % instance.name)
2206 node = instance.primary_node
2208 for dev in instance.disks:
2209 lu.cfg.SetDiskID(dev, node)
2211 # TODO: Convert to utils.Retry
2214 degr_retries = 10 # in seconds, as we sleep 1 second each time
2218 cumul_degraded = False
2219 rstats = lu.rpc.call_blockdev_getmirrorstatus(node, instance.disks)
2220 msg = rstats.fail_msg
2222 lu.LogWarning("Can't get any data from node %s: %s", node, msg)
2225 raise errors.RemoteError("Can't contact node %s for mirror data,"
2226 " aborting." % node)
2229 rstats = rstats.payload
2231 for i, mstat in enumerate(rstats):
2233 lu.LogWarning("Can't compute data for node %s/%s",
2234 node, instance.disks[i].iv_name)
2237 cumul_degraded = (cumul_degraded or
2238 (mstat.is_degraded and mstat.sync_percent is None))
2239 if mstat.sync_percent is not None:
2241 if mstat.estimated_time is not None:
2242 rem_time = "%d estimated seconds remaining" % mstat.estimated_time
2243 max_time = mstat.estimated_time
2245 rem_time = "no time estimate"
2246 lu.proc.LogInfo("- device %s: %5.2f%% done, %s" %
2247 (instance.disks[i].iv_name, mstat.sync_percent,
2250 # if we're done but degraded, let's do a few small retries, to
2251 # make sure we see a stable and not transient situation; therefore
2252 # we force restart of the loop
2253 if (done or oneshot) and cumul_degraded and degr_retries > 0:
2254 logging.info("Degraded disks found, %d retries left", degr_retries)
2262 time.sleep(min(60, max_time))
2265 lu.proc.LogInfo("Instance %s's disks are in sync." % instance.name)
2266 return not cumul_degraded
2269 def _CheckDiskConsistency(lu, dev, node, on_primary, ldisk=False):
2270 """Check that mirrors are not degraded.
2272 The ldisk parameter, if True, will change the test from the
2273 is_degraded attribute (which represents overall non-ok status for
2274 the device(s)) to the ldisk (representing the local storage status).
2277 lu.cfg.SetDiskID(dev, node)
2281 if on_primary or dev.AssembleOnSecondary():
2282 rstats = lu.rpc.call_blockdev_find(node, dev)
2283 msg = rstats.fail_msg
2285 lu.LogWarning("Can't find disk on node %s: %s", node, msg)
2287 elif not rstats.payload:
2288 lu.LogWarning("Can't find disk on node %s", node)
2292 result = result and rstats.payload.ldisk_status == constants.LDS_OKAY
2294 result = result and not rstats.payload.is_degraded
2297 for child in dev.children:
2298 result = result and _CheckDiskConsistency(lu, child, node, on_primary)
2303 class LUDiagnoseOS(NoHooksLU):
2304 """Logical unit for OS diagnose/query.
2307 _OP_REQP = ["output_fields", "names"]
2309 _FIELDS_STATIC = utils.FieldSet()
2310 _FIELDS_DYNAMIC = utils.FieldSet("name", "valid", "node_status", "variants")
2311 # Fields that need calculation of global os validity
2312 _FIELDS_NEEDVALID = frozenset(["valid", "variants"])
2314 def ExpandNames(self):
2316 raise errors.OpPrereqError("Selective OS query not supported",
2319 _CheckOutputFields(static=self._FIELDS_STATIC,
2320 dynamic=self._FIELDS_DYNAMIC,
2321 selected=self.op.output_fields)
2323 # Lock all nodes, in shared mode
2324 # Temporary removal of locks, should be reverted later
2325 # TODO: reintroduce locks when they are lighter-weight
2326 self.needed_locks = {}
2327 #self.share_locks[locking.LEVEL_NODE] = 1
2328 #self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
2330 def CheckPrereq(self):
2331 """Check prerequisites.
2336 def _DiagnoseByOS(rlist):
2337 """Remaps a per-node return list into an a per-os per-node dictionary
2339 @param rlist: a map with node names as keys and OS objects as values
2342 @return: a dictionary with osnames as keys and as value another map, with
2343 nodes as keys and tuples of (path, status, diagnose) as values, eg::
2345 {"debian-etch": {"node1": [(/usr/lib/..., True, ""),
2346 (/srv/..., False, "invalid api")],
2347 "node2": [(/srv/..., True, "")]}
2352 # we build here the list of nodes that didn't fail the RPC (at RPC
2353 # level), so that nodes with a non-responding node daemon don't
2354 # make all OSes invalid
2355 good_nodes = [node_name for node_name in rlist
2356 if not rlist[node_name].fail_msg]
2357 for node_name, nr in rlist.items():
2358 if nr.fail_msg or not nr.payload:
2360 for name, path, status, diagnose, variants in nr.payload:
2361 if name not in all_os:
2362 # build a list of nodes for this os containing empty lists
2363 # for each node in node_list
2365 for nname in good_nodes:
2366 all_os[name][nname] = []
2367 all_os[name][node_name].append((path, status, diagnose, variants))
2370 def Exec(self, feedback_fn):
2371 """Compute the list of OSes.
2374 valid_nodes = [node for node in self.cfg.GetOnlineNodeList()]
2375 node_data = self.rpc.call_os_diagnose(valid_nodes)
2376 pol = self._DiagnoseByOS(node_data)
2378 calc_valid = self._FIELDS_NEEDVALID.intersection(self.op.output_fields)
2379 calc_variants = "variants" in self.op.output_fields
2381 for os_name, os_data in pol.items():
2386 for osl in os_data.values():
2387 valid = valid and osl and osl[0][1]
2392 node_variants = osl[0][3]
2393 if variants is None:
2394 variants = node_variants
2396 variants = [v for v in variants if v in node_variants]
2398 for field in self.op.output_fields:
2401 elif field == "valid":
2403 elif field == "node_status":
2404 # this is just a copy of the dict
2406 for node_name, nos_list in os_data.items():
2407 val[node_name] = nos_list
2408 elif field == "variants":
2411 raise errors.ParameterError(field)
2418 class LURemoveNode(LogicalUnit):
2419 """Logical unit for removing a node.
2422 HPATH = "node-remove"
2423 HTYPE = constants.HTYPE_NODE
2424 _OP_REQP = ["node_name"]
2426 def BuildHooksEnv(self):
2429 This doesn't run on the target node in the pre phase as a failed
2430 node would then be impossible to remove.
2434 "OP_TARGET": self.op.node_name,
2435 "NODE_NAME": self.op.node_name,
2437 all_nodes = self.cfg.GetNodeList()
2439 all_nodes.remove(self.op.node_name)
2441 logging.warning("Node %s which is about to be removed not found"
2442 " in the all nodes list", self.op.node_name)
2443 return env, all_nodes, all_nodes
2445 def CheckPrereq(self):
2446 """Check prerequisites.
2449 - the node exists in the configuration
2450 - it does not have primary or secondary instances
2451 - it's not the master
2453 Any errors are signaled by raising errors.OpPrereqError.
2456 self.op.node_name = _ExpandNodeName(self.cfg, self.op.node_name)
2457 node = self.cfg.GetNodeInfo(self.op.node_name)
2458 assert node is not None
2460 instance_list = self.cfg.GetInstanceList()
2462 masternode = self.cfg.GetMasterNode()
2463 if node.name == masternode:
2464 raise errors.OpPrereqError("Node is the master node,"
2465 " you need to failover first.",
2468 for instance_name in instance_list:
2469 instance = self.cfg.GetInstanceInfo(instance_name)
2470 if node.name in instance.all_nodes:
2471 raise errors.OpPrereqError("Instance %s is still running on the node,"
2472 " please remove first." % instance_name,
2474 self.op.node_name = node.name
2477 def Exec(self, feedback_fn):
2478 """Removes the node from the cluster.
2482 logging.info("Stopping the node daemon and removing configs from node %s",
2485 modify_ssh_setup = self.cfg.GetClusterInfo().modify_ssh_setup
2487 # Promote nodes to master candidate as needed
2488 _AdjustCandidatePool(self, exceptions=[node.name])
2489 self.context.RemoveNode(node.name)
2491 # Run post hooks on the node before it's removed
2492 hm = self.proc.hmclass(self.rpc.call_hooks_runner, self)
2494 hm.RunPhase(constants.HOOKS_PHASE_POST, [node.name])
2496 # pylint: disable-msg=W0702
2497 self.LogWarning("Errors occurred running hooks on %s" % node.name)
2499 result = self.rpc.call_node_leave_cluster(node.name, modify_ssh_setup)
2500 msg = result.fail_msg
2502 self.LogWarning("Errors encountered on the remote node while leaving"
2503 " the cluster: %s", msg)
2506 class LUQueryNodes(NoHooksLU):
2507 """Logical unit for querying nodes.
2510 # pylint: disable-msg=W0142
2511 _OP_REQP = ["output_fields", "names", "use_locking"]
2514 _SIMPLE_FIELDS = ["name", "serial_no", "ctime", "mtime", "uuid",
2515 "master_candidate", "offline", "drained"]
2517 _FIELDS_DYNAMIC = utils.FieldSet(
2519 "mtotal", "mnode", "mfree",
2521 "ctotal", "cnodes", "csockets",
2524 _FIELDS_STATIC = utils.FieldSet(*[
2525 "pinst_cnt", "sinst_cnt",
2526 "pinst_list", "sinst_list",
2527 "pip", "sip", "tags",
2529 "role"] + _SIMPLE_FIELDS
2532 def ExpandNames(self):
2533 _CheckOutputFields(static=self._FIELDS_STATIC,
2534 dynamic=self._FIELDS_DYNAMIC,
2535 selected=self.op.output_fields)
2537 self.needed_locks = {}
2538 self.share_locks[locking.LEVEL_NODE] = 1
2541 self.wanted = _GetWantedNodes(self, self.op.names)
2543 self.wanted = locking.ALL_SET
2545 self.do_node_query = self._FIELDS_STATIC.NonMatching(self.op.output_fields)
2546 self.do_locking = self.do_node_query and self.op.use_locking
2548 # if we don't request only static fields, we need to lock the nodes
2549 self.needed_locks[locking.LEVEL_NODE] = self.wanted
2551 def CheckPrereq(self):
2552 """Check prerequisites.
2555 # The validation of the node list is done in the _GetWantedNodes,
2556 # if non empty, and if empty, there's no validation to do
2559 def Exec(self, feedback_fn):
2560 """Computes the list of nodes and their attributes.
2563 all_info = self.cfg.GetAllNodesInfo()
2565 nodenames = self.acquired_locks[locking.LEVEL_NODE]
2566 elif self.wanted != locking.ALL_SET:
2567 nodenames = self.wanted
2568 missing = set(nodenames).difference(all_info.keys())
2570 raise errors.OpExecError(
2571 "Some nodes were removed before retrieving their data: %s" % missing)
2573 nodenames = all_info.keys()
2575 nodenames = utils.NiceSort(nodenames)
2576 nodelist = [all_info[name] for name in nodenames]
2578 # begin data gathering
2580 if self.do_node_query:
2582 node_data = self.rpc.call_node_info(nodenames, self.cfg.GetVGName(),
2583 self.cfg.GetHypervisorType())
2584 for name in nodenames:
2585 nodeinfo = node_data[name]
2586 if not nodeinfo.fail_msg and nodeinfo.payload:
2587 nodeinfo = nodeinfo.payload
2588 fn = utils.TryConvert
2590 "mtotal": fn(int, nodeinfo.get('memory_total', None)),
2591 "mnode": fn(int, nodeinfo.get('memory_dom0', None)),
2592 "mfree": fn(int, nodeinfo.get('memory_free', None)),
2593 "dtotal": fn(int, nodeinfo.get('vg_size', None)),
2594 "dfree": fn(int, nodeinfo.get('vg_free', None)),
2595 "ctotal": fn(int, nodeinfo.get('cpu_total', None)),
2596 "bootid": nodeinfo.get('bootid', None),
2597 "cnodes": fn(int, nodeinfo.get('cpu_nodes', None)),
2598 "csockets": fn(int, nodeinfo.get('cpu_sockets', None)),
2601 live_data[name] = {}
2603 live_data = dict.fromkeys(nodenames, {})
2605 node_to_primary = dict([(name, set()) for name in nodenames])
2606 node_to_secondary = dict([(name, set()) for name in nodenames])
2608 inst_fields = frozenset(("pinst_cnt", "pinst_list",
2609 "sinst_cnt", "sinst_list"))
2610 if inst_fields & frozenset(self.op.output_fields):
2611 inst_data = self.cfg.GetAllInstancesInfo()
2613 for inst in inst_data.values():
2614 if inst.primary_node in node_to_primary:
2615 node_to_primary[inst.primary_node].add(inst.name)
2616 for secnode in inst.secondary_nodes:
2617 if secnode in node_to_secondary:
2618 node_to_secondary[secnode].add(inst.name)
2620 master_node = self.cfg.GetMasterNode()
2622 # end data gathering
2625 for node in nodelist:
2627 for field in self.op.output_fields:
2628 if field in self._SIMPLE_FIELDS:
2629 val = getattr(node, field)
2630 elif field == "pinst_list":
2631 val = list(node_to_primary[node.name])
2632 elif field == "sinst_list":
2633 val = list(node_to_secondary[node.name])
2634 elif field == "pinst_cnt":
2635 val = len(node_to_primary[node.name])
2636 elif field == "sinst_cnt":
2637 val = len(node_to_secondary[node.name])
2638 elif field == "pip":
2639 val = node.primary_ip
2640 elif field == "sip":
2641 val = node.secondary_ip
2642 elif field == "tags":
2643 val = list(node.GetTags())
2644 elif field == "master":
2645 val = node.name == master_node
2646 elif self._FIELDS_DYNAMIC.Matches(field):
2647 val = live_data[node.name].get(field, None)
2648 elif field == "role":
2649 if node.name == master_node:
2651 elif node.master_candidate:
2660 raise errors.ParameterError(field)
2661 node_output.append(val)
2662 output.append(node_output)
2667 class LUQueryNodeVolumes(NoHooksLU):
2668 """Logical unit for getting volumes on node(s).
2671 _OP_REQP = ["nodes", "output_fields"]
2673 _FIELDS_DYNAMIC = utils.FieldSet("phys", "vg", "name", "size", "instance")
2674 _FIELDS_STATIC = utils.FieldSet("node")
2676 def ExpandNames(self):
2677 _CheckOutputFields(static=self._FIELDS_STATIC,
2678 dynamic=self._FIELDS_DYNAMIC,
2679 selected=self.op.output_fields)
2681 self.needed_locks = {}
2682 self.share_locks[locking.LEVEL_NODE] = 1
2683 if not self.op.nodes:
2684 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
2686 self.needed_locks[locking.LEVEL_NODE] = \
2687 _GetWantedNodes(self, self.op.nodes)
2689 def CheckPrereq(self):
2690 """Check prerequisites.
2692 This checks that the fields required are valid output fields.
2695 self.nodes = self.acquired_locks[locking.LEVEL_NODE]
2697 def Exec(self, feedback_fn):
2698 """Computes the list of nodes and their attributes.
2701 nodenames = self.nodes
2702 volumes = self.rpc.call_node_volumes(nodenames)
2704 ilist = [self.cfg.GetInstanceInfo(iname) for iname
2705 in self.cfg.GetInstanceList()]
2707 lv_by_node = dict([(inst, inst.MapLVsByNode()) for inst in ilist])
2710 for node in nodenames:
2711 nresult = volumes[node]
2714 msg = nresult.fail_msg
2716 self.LogWarning("Can't compute volume data on node %s: %s", node, msg)
2719 node_vols = nresult.payload[:]
2720 node_vols.sort(key=lambda vol: vol['dev'])
2722 for vol in node_vols:
2724 for field in self.op.output_fields:
2727 elif field == "phys":
2731 elif field == "name":
2733 elif field == "size":
2734 val = int(float(vol['size']))
2735 elif field == "instance":
2737 if node not in lv_by_node[inst]:
2739 if vol['name'] in lv_by_node[inst][node]:
2745 raise errors.ParameterError(field)
2746 node_output.append(str(val))
2748 output.append(node_output)
2753 class LUQueryNodeStorage(NoHooksLU):
2754 """Logical unit for getting information on storage units on node(s).
2757 _OP_REQP = ["nodes", "storage_type", "output_fields"]
2759 _FIELDS_STATIC = utils.FieldSet(constants.SF_NODE)
2761 def ExpandNames(self):
2762 storage_type = self.op.storage_type
2764 if storage_type not in constants.VALID_STORAGE_TYPES:
2765 raise errors.OpPrereqError("Unknown storage type: %s" % storage_type,
2768 _CheckOutputFields(static=self._FIELDS_STATIC,
2769 dynamic=utils.FieldSet(*constants.VALID_STORAGE_FIELDS),
2770 selected=self.op.output_fields)
2772 self.needed_locks = {}
2773 self.share_locks[locking.LEVEL_NODE] = 1
2776 self.needed_locks[locking.LEVEL_NODE] = \
2777 _GetWantedNodes(self, self.op.nodes)
2779 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
2781 def CheckPrereq(self):
2782 """Check prerequisites.
2784 This checks that the fields required are valid output fields.
2787 self.op.name = getattr(self.op, "name", None)
2789 self.nodes = self.acquired_locks[locking.LEVEL_NODE]
2791 def Exec(self, feedback_fn):
2792 """Computes the list of nodes and their attributes.
2795 # Always get name to sort by
2796 if constants.SF_NAME in self.op.output_fields:
2797 fields = self.op.output_fields[:]
2799 fields = [constants.SF_NAME] + self.op.output_fields
2801 # Never ask for node or type as it's only known to the LU
2802 for extra in [constants.SF_NODE, constants.SF_TYPE]:
2803 while extra in fields:
2804 fields.remove(extra)
2806 field_idx = dict([(name, idx) for (idx, name) in enumerate(fields)])
2807 name_idx = field_idx[constants.SF_NAME]
2809 st_args = _GetStorageTypeArgs(self.cfg, self.op.storage_type)
2810 data = self.rpc.call_storage_list(self.nodes,
2811 self.op.storage_type, st_args,
2812 self.op.name, fields)
2816 for node in utils.NiceSort(self.nodes):
2817 nresult = data[node]
2821 msg = nresult.fail_msg
2823 self.LogWarning("Can't get storage data from node %s: %s", node, msg)
2826 rows = dict([(row[name_idx], row) for row in nresult.payload])
2828 for name in utils.NiceSort(rows.keys()):
2833 for field in self.op.output_fields:
2834 if field == constants.SF_NODE:
2836 elif field == constants.SF_TYPE:
2837 val = self.op.storage_type
2838 elif field in field_idx:
2839 val = row[field_idx[field]]
2841 raise errors.ParameterError(field)
2850 class LUModifyNodeStorage(NoHooksLU):
2851 """Logical unit for modifying a storage volume on a node.
2854 _OP_REQP = ["node_name", "storage_type", "name", "changes"]
2857 def CheckArguments(self):
2858 self.opnode_name = _ExpandNodeName(self.cfg, self.op.node_name)
2860 storage_type = self.op.storage_type
2861 if storage_type not in constants.VALID_STORAGE_TYPES:
2862 raise errors.OpPrereqError("Unknown storage type: %s" % storage_type,
2865 def ExpandNames(self):
2866 self.needed_locks = {
2867 locking.LEVEL_NODE: self.op.node_name,
2870 def CheckPrereq(self):
2871 """Check prerequisites.
2874 storage_type = self.op.storage_type
2877 modifiable = constants.MODIFIABLE_STORAGE_FIELDS[storage_type]
2879 raise errors.OpPrereqError("Storage units of type '%s' can not be"
2880 " modified" % storage_type,
2883 diff = set(self.op.changes.keys()) - modifiable
2885 raise errors.OpPrereqError("The following fields can not be modified for"
2886 " storage units of type '%s': %r" %
2887 (storage_type, list(diff)),
2890 def Exec(self, feedback_fn):
2891 """Computes the list of nodes and their attributes.
2894 st_args = _GetStorageTypeArgs(self.cfg, self.op.storage_type)
2895 result = self.rpc.call_storage_modify(self.op.node_name,
2896 self.op.storage_type, st_args,
2897 self.op.name, self.op.changes)
2898 result.Raise("Failed to modify storage unit '%s' on %s" %
2899 (self.op.name, self.op.node_name))
2902 class LUAddNode(LogicalUnit):
2903 """Logical unit for adding node to the cluster.
2907 HTYPE = constants.HTYPE_NODE
2908 _OP_REQP = ["node_name"]
2910 def BuildHooksEnv(self):
2913 This will run on all nodes before, and on all nodes + the new node after.
2917 "OP_TARGET": self.op.node_name,
2918 "NODE_NAME": self.op.node_name,
2919 "NODE_PIP": self.op.primary_ip,
2920 "NODE_SIP": self.op.secondary_ip,
2922 nodes_0 = self.cfg.GetNodeList()
2923 nodes_1 = nodes_0 + [self.op.node_name, ]
2924 return env, nodes_0, nodes_1
2926 def CheckPrereq(self):
2927 """Check prerequisites.
2930 - the new node is not already in the config
2932 - its parameters (single/dual homed) matches the cluster
2934 Any errors are signaled by raising errors.OpPrereqError.
2937 node_name = self.op.node_name
2940 dns_data = utils.GetHostInfo(node_name)
2942 node = dns_data.name
2943 primary_ip = self.op.primary_ip = dns_data.ip
2944 secondary_ip = getattr(self.op, "secondary_ip", None)
2945 if secondary_ip is None:
2946 secondary_ip = primary_ip
2947 if not utils.IsValidIP(secondary_ip):
2948 raise errors.OpPrereqError("Invalid secondary IP given",
2950 self.op.secondary_ip = secondary_ip
2952 node_list = cfg.GetNodeList()
2953 if not self.op.readd and node in node_list:
2954 raise errors.OpPrereqError("Node %s is already in the configuration" %
2955 node, errors.ECODE_EXISTS)
2956 elif self.op.readd and node not in node_list:
2957 raise errors.OpPrereqError("Node %s is not in the configuration" % node,
2960 for existing_node_name in node_list:
2961 existing_node = cfg.GetNodeInfo(existing_node_name)
2963 if self.op.readd and node == existing_node_name:
2964 if (existing_node.primary_ip != primary_ip or
2965 existing_node.secondary_ip != secondary_ip):
2966 raise errors.OpPrereqError("Readded node doesn't have the same IP"
2967 " address configuration as before",
2971 if (existing_node.primary_ip == primary_ip or
2972 existing_node.secondary_ip == primary_ip or
2973 existing_node.primary_ip == secondary_ip or
2974 existing_node.secondary_ip == secondary_ip):
2975 raise errors.OpPrereqError("New node ip address(es) conflict with"
2976 " existing node %s" % existing_node.name,
2977 errors.ECODE_NOTUNIQUE)
2979 # check that the type of the node (single versus dual homed) is the
2980 # same as for the master
2981 myself = cfg.GetNodeInfo(self.cfg.GetMasterNode())
2982 master_singlehomed = myself.secondary_ip == myself.primary_ip
2983 newbie_singlehomed = secondary_ip == primary_ip
2984 if master_singlehomed != newbie_singlehomed:
2985 if master_singlehomed:
2986 raise errors.OpPrereqError("The master has no private ip but the"
2987 " new node has one",
2990 raise errors.OpPrereqError("The master has a private ip but the"
2991 " new node doesn't have one",
2994 # checks reachability
2995 if not utils.TcpPing(primary_ip, constants.DEFAULT_NODED_PORT):
2996 raise errors.OpPrereqError("Node not reachable by ping",
2997 errors.ECODE_ENVIRON)
2999 if not newbie_singlehomed:
3000 # check reachability from my secondary ip to newbie's secondary ip
3001 if not utils.TcpPing(secondary_ip, constants.DEFAULT_NODED_PORT,
3002 source=myself.secondary_ip):
3003 raise errors.OpPrereqError("Node secondary ip not reachable by TCP"
3004 " based ping to noded port",
3005 errors.ECODE_ENVIRON)
3012 self.master_candidate = _DecideSelfPromotion(self, exceptions=exceptions)
3015 self.new_node = self.cfg.GetNodeInfo(node)
3016 assert self.new_node is not None, "Can't retrieve locked node %s" % node
3018 self.new_node = objects.Node(name=node,
3019 primary_ip=primary_ip,
3020 secondary_ip=secondary_ip,
3021 master_candidate=self.master_candidate,
3022 offline=False, drained=False)
3024 def Exec(self, feedback_fn):
3025 """Adds the new node to the cluster.
3028 new_node = self.new_node
3029 node = new_node.name
3031 # for re-adds, reset the offline/drained/master-candidate flags;
3032 # we need to reset here, otherwise offline would prevent RPC calls
3033 # later in the procedure; this also means that if the re-add
3034 # fails, we are left with a non-offlined, broken node
3036 new_node.drained = new_node.offline = False # pylint: disable-msg=W0201
3037 self.LogInfo("Readding a node, the offline/drained flags were reset")
3038 # if we demote the node, we do cleanup later in the procedure
3039 new_node.master_candidate = self.master_candidate
3041 # notify the user about any possible mc promotion
3042 if new_node.master_candidate:
3043 self.LogInfo("Node will be a master candidate")
3045 # check connectivity
3046 result = self.rpc.call_version([node])[node]
3047 result.Raise("Can't get version information from node %s" % node)
3048 if constants.PROTOCOL_VERSION == result.payload:
3049 logging.info("Communication to node %s fine, sw version %s match",
3050 node, result.payload)
3052 raise errors.OpExecError("Version mismatch master version %s,"
3053 " node version %s" %
3054 (constants.PROTOCOL_VERSION, result.payload))
3057 if self.cfg.GetClusterInfo().modify_ssh_setup:
3058 logging.info("Copy ssh key to node %s", node)
3059 priv_key, pub_key, _ = ssh.GetUserFiles(constants.GANETI_RUNAS)
3061 keyfiles = [constants.SSH_HOST_DSA_PRIV, constants.SSH_HOST_DSA_PUB,
3062 constants.SSH_HOST_RSA_PRIV, constants.SSH_HOST_RSA_PUB,
3066 keyarray.append(utils.ReadFile(i))
3068 result = self.rpc.call_node_add(node, keyarray[0], keyarray[1],
3069 keyarray[2], keyarray[3], keyarray[4],
3071 result.Raise("Cannot transfer ssh keys to the new node")
3073 # Add node to our /etc/hosts, and add key to known_hosts
3074 if self.cfg.GetClusterInfo().modify_etc_hosts:
3075 utils.AddHostToEtcHosts(new_node.name)
3077 if new_node.secondary_ip != new_node.primary_ip:
3078 result = self.rpc.call_node_has_ip_address(new_node.name,
3079 new_node.secondary_ip)
3080 result.Raise("Failure checking secondary ip on node %s" % new_node.name,
3081 prereq=True, ecode=errors.ECODE_ENVIRON)
3082 if not result.payload:
3083 raise errors.OpExecError("Node claims it doesn't have the secondary ip"
3084 " you gave (%s). Please fix and re-run this"
3085 " command." % new_node.secondary_ip)
3087 node_verify_list = [self.cfg.GetMasterNode()]
3088 node_verify_param = {
3089 constants.NV_NODELIST: [node],
3090 # TODO: do a node-net-test as well?
3093 result = self.rpc.call_node_verify(node_verify_list, node_verify_param,
3094 self.cfg.GetClusterName())
3095 for verifier in node_verify_list:
3096 result[verifier].Raise("Cannot communicate with node %s" % verifier)
3097 nl_payload = result[verifier].payload[constants.NV_NODELIST]
3099 for failed in nl_payload:
3100 feedback_fn("ssh/hostname verification failed"
3101 " (checking from %s): %s" %
3102 (verifier, nl_payload[failed]))
3103 raise errors.OpExecError("ssh/hostname verification failed.")
3106 _RedistributeAncillaryFiles(self)
3107 self.context.ReaddNode(new_node)
3108 # make sure we redistribute the config
3109 self.cfg.Update(new_node, feedback_fn)
3110 # and make sure the new node will not have old files around
3111 if not new_node.master_candidate:
3112 result = self.rpc.call_node_demote_from_mc(new_node.name)
3113 msg = result.fail_msg
3115 self.LogWarning("Node failed to demote itself from master"
3116 " candidate status: %s" % msg)
3118 _RedistributeAncillaryFiles(self, additional_nodes=[node])
3119 self.context.AddNode(new_node, self.proc.GetECId())
3122 class LUSetNodeParams(LogicalUnit):
3123 """Modifies the parameters of a node.
3126 HPATH = "node-modify"
3127 HTYPE = constants.HTYPE_NODE
3128 _OP_REQP = ["node_name"]
3131 def CheckArguments(self):
3132 self.op.node_name = _ExpandNodeName(self.cfg, self.op.node_name)
3133 _CheckBooleanOpField(self.op, 'master_candidate')
3134 _CheckBooleanOpField(self.op, 'offline')
3135 _CheckBooleanOpField(self.op, 'drained')
3136 all_mods = [self.op.offline, self.op.master_candidate, self.op.drained]
3137 if all_mods.count(None) == 3:
3138 raise errors.OpPrereqError("Please pass at least one modification",
3140 if all_mods.count(True) > 1:
3141 raise errors.OpPrereqError("Can't set the node into more than one"
3142 " state at the same time",
3145 def ExpandNames(self):
3146 self.needed_locks = {locking.LEVEL_NODE: self.op.node_name}
3148 def BuildHooksEnv(self):
3151 This runs on the master node.
3155 "OP_TARGET": self.op.node_name,
3156 "MASTER_CANDIDATE": str(self.op.master_candidate),
3157 "OFFLINE": str(self.op.offline),
3158 "DRAINED": str(self.op.drained),
3160 nl = [self.cfg.GetMasterNode(),
3164 def CheckPrereq(self):
3165 """Check prerequisites.
3167 This only checks the instance list against the existing names.
3170 node = self.node = self.cfg.GetNodeInfo(self.op.node_name)
3172 if (self.op.master_candidate is not None or
3173 self.op.drained is not None or
3174 self.op.offline is not None):
3175 # we can't change the master's node flags
3176 if self.op.node_name == self.cfg.GetMasterNode():
3177 raise errors.OpPrereqError("The master role can be changed"
3178 " only via masterfailover",
3181 # Boolean value that tells us whether we're offlining or draining the node
3182 offline_or_drain = self.op.offline == True or self.op.drained == True
3183 deoffline_or_drain = self.op.offline == False or self.op.drained == False
3185 if (node.master_candidate and
3186 (self.op.master_candidate == False or offline_or_drain)):
3187 cp_size = self.cfg.GetClusterInfo().candidate_pool_size
3188 mc_now, mc_should, mc_max = self.cfg.GetMasterCandidateStats()
3189 if mc_now <= cp_size:
3190 msg = ("Not enough master candidates (desired"
3191 " %d, new value will be %d)" % (cp_size, mc_now-1))
3192 # Only allow forcing the operation if it's an offline/drain operation,
3193 # and we could not possibly promote more nodes.
3194 # FIXME: this can still lead to issues if in any way another node which
3195 # could be promoted appears in the meantime.
3196 if self.op.force and offline_or_drain and mc_should == mc_max:
3197 self.LogWarning(msg)
3199 raise errors.OpPrereqError(msg, errors.ECODE_INVAL)
3201 if (self.op.master_candidate == True and
3202 ((node.offline and not self.op.offline == False) or
3203 (node.drained and not self.op.drained == False))):
3204 raise errors.OpPrereqError("Node '%s' is offline or drained, can't set"
3205 " to master_candidate" % node.name,
3208 # If we're being deofflined/drained, we'll MC ourself if needed
3209 if (deoffline_or_drain and not offline_or_drain and not
3210 self.op.master_candidate == True and not node.master_candidate):
3211 self.op.master_candidate = _DecideSelfPromotion(self)
3212 if self.op.master_candidate:
3213 self.LogInfo("Autopromoting node to master candidate")
3217 def Exec(self, feedback_fn):
3226 if self.op.offline is not None:
3227 node.offline = self.op.offline
3228 result.append(("offline", str(self.op.offline)))
3229 if self.op.offline == True:
3230 if node.master_candidate:
3231 node.master_candidate = False
3233 result.append(("master_candidate", "auto-demotion due to offline"))
3235 node.drained = False
3236 result.append(("drained", "clear drained status due to offline"))
3238 if self.op.master_candidate is not None:
3239 node.master_candidate = self.op.master_candidate
3241 result.append(("master_candidate", str(self.op.master_candidate)))
3242 if self.op.master_candidate == False:
3243 rrc = self.rpc.call_node_demote_from_mc(node.name)
3246 self.LogWarning("Node failed to demote itself: %s" % msg)
3248 if self.op.drained is not None:
3249 node.drained = self.op.drained
3250 result.append(("drained", str(self.op.drained)))
3251 if self.op.drained == True:
3252 if node.master_candidate:
3253 node.master_candidate = False
3255 result.append(("master_candidate", "auto-demotion due to drain"))
3256 rrc = self.rpc.call_node_demote_from_mc(node.name)
3259 self.LogWarning("Node failed to demote itself: %s" % msg)
3261 node.offline = False
3262 result.append(("offline", "clear offline status due to drain"))
3264 # this will trigger configuration file update, if needed
3265 self.cfg.Update(node, feedback_fn)
3266 # this will trigger job queue propagation or cleanup
3268 self.context.ReaddNode(node)
3273 class LUPowercycleNode(NoHooksLU):
3274 """Powercycles a node.
3277 _OP_REQP = ["node_name", "force"]
3280 def CheckArguments(self):
3281 self.op.node_name = _ExpandNodeName(self.cfg, self.op.node_name)
3282 if self.op.node_name == self.cfg.GetMasterNode() and not self.op.force:
3283 raise errors.OpPrereqError("The node is the master and the force"
3284 " parameter was not set",
3287 def ExpandNames(self):
3288 """Locking for PowercycleNode.
3290 This is a last-resort option and shouldn't block on other
3291 jobs. Therefore, we grab no locks.
3294 self.needed_locks = {}
3296 def CheckPrereq(self):
3297 """Check prerequisites.
3299 This LU has no prereqs.
3304 def Exec(self, feedback_fn):
3308 result = self.rpc.call_node_powercycle(self.op.node_name,
3309 self.cfg.GetHypervisorType())
3310 result.Raise("Failed to schedule the reboot")
3311 return result.payload
3314 class LUQueryClusterInfo(NoHooksLU):
3315 """Query cluster configuration.
3321 def ExpandNames(self):
3322 self.needed_locks = {}
3324 def CheckPrereq(self):
3325 """No prerequsites needed for this LU.
3330 def Exec(self, feedback_fn):
3331 """Return cluster config.
3334 cluster = self.cfg.GetClusterInfo()
3336 "software_version": constants.RELEASE_VERSION,
3337 "protocol_version": constants.PROTOCOL_VERSION,
3338 "config_version": constants.CONFIG_VERSION,
3339 "os_api_version": max(constants.OS_API_VERSIONS),
3340 "export_version": constants.EXPORT_VERSION,
3341 "architecture": (platform.architecture()[0], platform.machine()),
3342 "name": cluster.cluster_name,
3343 "master": cluster.master_node,
3344 "default_hypervisor": cluster.enabled_hypervisors[0],
3345 "enabled_hypervisors": cluster.enabled_hypervisors,
3346 "hvparams": dict([(hypervisor_name, cluster.hvparams[hypervisor_name])
3347 for hypervisor_name in cluster.enabled_hypervisors]),
3348 "beparams": cluster.beparams,
3349 "nicparams": cluster.nicparams,
3350 "candidate_pool_size": cluster.candidate_pool_size,
3351 "master_netdev": cluster.master_netdev,
3352 "volume_group_name": cluster.volume_group_name,
3353 "file_storage_dir": cluster.file_storage_dir,
3354 "ctime": cluster.ctime,
3355 "mtime": cluster.mtime,
3356 "uuid": cluster.uuid,
3357 "tags": list(cluster.GetTags()),
3363 class LUQueryConfigValues(NoHooksLU):
3364 """Return configuration values.
3369 _FIELDS_DYNAMIC = utils.FieldSet()
3370 _FIELDS_STATIC = utils.FieldSet("cluster_name", "master_node", "drain_flag",
3373 def ExpandNames(self):
3374 self.needed_locks = {}
3376 _CheckOutputFields(static=self._FIELDS_STATIC,
3377 dynamic=self._FIELDS_DYNAMIC,
3378 selected=self.op.output_fields)
3380 def CheckPrereq(self):
3381 """No prerequisites.
3386 def Exec(self, feedback_fn):
3387 """Dump a representation of the cluster config to the standard output.
3391 for field in self.op.output_fields:
3392 if field == "cluster_name":
3393 entry = self.cfg.GetClusterName()
3394 elif field == "master_node":
3395 entry = self.cfg.GetMasterNode()
3396 elif field == "drain_flag":
3397 entry = os.path.exists(constants.JOB_QUEUE_DRAIN_FILE)
3398 elif field == "watcher_pause":
3399 entry = utils.ReadWatcherPauseFile(constants.WATCHER_PAUSEFILE)
3401 raise errors.ParameterError(field)
3402 values.append(entry)
3406 class LUActivateInstanceDisks(NoHooksLU):
3407 """Bring up an instance's disks.
3410 _OP_REQP = ["instance_name"]
3413 def ExpandNames(self):
3414 self._ExpandAndLockInstance()
3415 self.needed_locks[locking.LEVEL_NODE] = []
3416 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3418 def DeclareLocks(self, level):
3419 if level == locking.LEVEL_NODE:
3420 self._LockInstancesNodes()
3422 def CheckPrereq(self):
3423 """Check prerequisites.
3425 This checks that the instance is in the cluster.
3428 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3429 assert self.instance is not None, \
3430 "Cannot retrieve locked instance %s" % self.op.instance_name
3431 _CheckNodeOnline(self, self.instance.primary_node)
3432 if not hasattr(self.op, "ignore_size"):
3433 self.op.ignore_size = False
3435 def Exec(self, feedback_fn):
3436 """Activate the disks.
3439 disks_ok, disks_info = \
3440 _AssembleInstanceDisks(self, self.instance,
3441 ignore_size=self.op.ignore_size)
3443 raise errors.OpExecError("Cannot activate block devices")
3448 def _AssembleInstanceDisks(lu, instance, ignore_secondaries=False,
3450 """Prepare the block devices for an instance.
3452 This sets up the block devices on all nodes.
3454 @type lu: L{LogicalUnit}
3455 @param lu: the logical unit on whose behalf we execute
3456 @type instance: L{objects.Instance}
3457 @param instance: the instance for whose disks we assemble
3458 @type ignore_secondaries: boolean
3459 @param ignore_secondaries: if true, errors on secondary nodes
3460 won't result in an error return from the function
3461 @type ignore_size: boolean
3462 @param ignore_size: if true, the current known size of the disk
3463 will not be used during the disk activation, useful for cases
3464 when the size is wrong
3465 @return: False if the operation failed, otherwise a list of
3466 (host, instance_visible_name, node_visible_name)
3467 with the mapping from node devices to instance devices
3472 iname = instance.name
3473 # With the two passes mechanism we try to reduce the window of
3474 # opportunity for the race condition of switching DRBD to primary
3475 # before handshaking occured, but we do not eliminate it
3477 # The proper fix would be to wait (with some limits) until the
3478 # connection has been made and drbd transitions from WFConnection
3479 # into any other network-connected state (Connected, SyncTarget,
3482 # 1st pass, assemble on all nodes in secondary mode
3483 for inst_disk in instance.disks:
3484 for node, node_disk in inst_disk.ComputeNodeTree(instance.primary_node):
3486 node_disk = node_disk.Copy()
3487 node_disk.UnsetSize()
3488 lu.cfg.SetDiskID(node_disk, node)
3489 result = lu.rpc.call_blockdev_assemble(node, node_disk, iname, False)
3490 msg = result.fail_msg
3492 lu.proc.LogWarning("Could not prepare block device %s on node %s"
3493 " (is_primary=False, pass=1): %s",
3494 inst_disk.iv_name, node, msg)
3495 if not ignore_secondaries:
3498 # FIXME: race condition on drbd migration to primary
3500 # 2nd pass, do only the primary node
3501 for inst_disk in instance.disks:
3504 for node, node_disk in inst_disk.ComputeNodeTree(instance.primary_node):
3505 if node != instance.primary_node:
3508 node_disk = node_disk.Copy()
3509 node_disk.UnsetSize()
3510 lu.cfg.SetDiskID(node_disk, node)
3511 result = lu.rpc.call_blockdev_assemble(node, node_disk, iname, True)
3512 msg = result.fail_msg
3514 lu.proc.LogWarning("Could not prepare block device %s on node %s"
3515 " (is_primary=True, pass=2): %s",
3516 inst_disk.iv_name, node, msg)
3519 dev_path = result.payload
3521 device_info.append((instance.primary_node, inst_disk.iv_name, dev_path))
3523 # leave the disks configured for the primary node
3524 # this is a workaround that would be fixed better by
3525 # improving the logical/physical id handling
3526 for disk in instance.disks:
3527 lu.cfg.SetDiskID(disk, instance.primary_node)
3529 return disks_ok, device_info
3532 def _StartInstanceDisks(lu, instance, force):
3533 """Start the disks of an instance.
3536 disks_ok, _ = _AssembleInstanceDisks(lu, instance,
3537 ignore_secondaries=force)
3539 _ShutdownInstanceDisks(lu, instance)
3540 if force is not None and not force:
3541 lu.proc.LogWarning("", hint="If the message above refers to a"
3543 " you can retry the operation using '--force'.")
3544 raise errors.OpExecError("Disk consistency error")
3547 class LUDeactivateInstanceDisks(NoHooksLU):
3548 """Shutdown an instance's disks.
3551 _OP_REQP = ["instance_name"]
3554 def ExpandNames(self):
3555 self._ExpandAndLockInstance()
3556 self.needed_locks[locking.LEVEL_NODE] = []
3557 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3559 def DeclareLocks(self, level):
3560 if level == locking.LEVEL_NODE:
3561 self._LockInstancesNodes()
3563 def CheckPrereq(self):
3564 """Check prerequisites.
3566 This checks that the instance is in the cluster.
3569 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3570 assert self.instance is not None, \
3571 "Cannot retrieve locked instance %s" % self.op.instance_name
3573 def Exec(self, feedback_fn):
3574 """Deactivate the disks
3577 instance = self.instance
3578 _SafeShutdownInstanceDisks(self, instance)
3581 def _SafeShutdownInstanceDisks(lu, instance):
3582 """Shutdown block devices of an instance.
3584 This function checks if an instance is running, before calling
3585 _ShutdownInstanceDisks.
3588 pnode = instance.primary_node
3589 ins_l = lu.rpc.call_instance_list([pnode], [instance.hypervisor])[pnode]
3590 ins_l.Raise("Can't contact node %s" % pnode)
3592 if instance.name in ins_l.payload:
3593 raise errors.OpExecError("Instance is running, can't shutdown"
3596 _ShutdownInstanceDisks(lu, instance)
3599 def _ShutdownInstanceDisks(lu, instance, ignore_primary=False):
3600 """Shutdown block devices of an instance.
3602 This does the shutdown on all nodes of the instance.
3604 If the ignore_primary is false, errors on the primary node are
3609 for disk in instance.disks:
3610 for node, top_disk in disk.ComputeNodeTree(instance.primary_node):
3611 lu.cfg.SetDiskID(top_disk, node)
3612 result = lu.rpc.call_blockdev_shutdown(node, top_disk)
3613 msg = result.fail_msg
3615 lu.LogWarning("Could not shutdown block device %s on node %s: %s",
3616 disk.iv_name, node, msg)
3617 if not ignore_primary or node != instance.primary_node:
3622 def _CheckNodeFreeMemory(lu, node, reason, requested, hypervisor_name):
3623 """Checks if a node has enough free memory.
3625 This function check if a given node has the needed amount of free
3626 memory. In case the node has less memory or we cannot get the
3627 information from the node, this function raise an OpPrereqError
3630 @type lu: C{LogicalUnit}
3631 @param lu: a logical unit from which we get configuration data
3633 @param node: the node to check
3634 @type reason: C{str}
3635 @param reason: string to use in the error message
3636 @type requested: C{int}
3637 @param requested: the amount of memory in MiB to check for
3638 @type hypervisor_name: C{str}
3639 @param hypervisor_name: the hypervisor to ask for memory stats
3640 @raise errors.OpPrereqError: if the node doesn't have enough memory, or
3641 we cannot check the node
3644 nodeinfo = lu.rpc.call_node_info([node], lu.cfg.GetVGName(), hypervisor_name)
3645 nodeinfo[node].Raise("Can't get data from node %s" % node,
3646 prereq=True, ecode=errors.ECODE_ENVIRON)
3647 free_mem = nodeinfo[node].payload.get('memory_free', None)
3648 if not isinstance(free_mem, int):
3649 raise errors.OpPrereqError("Can't compute free memory on node %s, result"
3650 " was '%s'" % (node, free_mem),
3651 errors.ECODE_ENVIRON)
3652 if requested > free_mem:
3653 raise errors.OpPrereqError("Not enough memory on node %s for %s:"
3654 " needed %s MiB, available %s MiB" %
3655 (node, reason, requested, free_mem),
3659 class LUStartupInstance(LogicalUnit):
3660 """Starts an instance.
3663 HPATH = "instance-start"
3664 HTYPE = constants.HTYPE_INSTANCE
3665 _OP_REQP = ["instance_name", "force"]
3668 def ExpandNames(self):
3669 self._ExpandAndLockInstance()
3671 def BuildHooksEnv(self):
3674 This runs on master, primary and secondary nodes of the instance.
3678 "FORCE": self.op.force,
3680 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
3681 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
3684 def CheckPrereq(self):
3685 """Check prerequisites.
3687 This checks that the instance is in the cluster.
3690 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3691 assert self.instance is not None, \
3692 "Cannot retrieve locked instance %s" % self.op.instance_name
3695 self.beparams = getattr(self.op, "beparams", {})
3697 if not isinstance(self.beparams, dict):
3698 raise errors.OpPrereqError("Invalid beparams passed: %s, expected"
3699 " dict" % (type(self.beparams), ),
3701 # fill the beparams dict
3702 utils.ForceDictType(self.beparams, constants.BES_PARAMETER_TYPES)
3703 self.op.beparams = self.beparams
3706 self.hvparams = getattr(self.op, "hvparams", {})
3708 if not isinstance(self.hvparams, dict):
3709 raise errors.OpPrereqError("Invalid hvparams passed: %s, expected"
3710 " dict" % (type(self.hvparams), ),
3713 # check hypervisor parameter syntax (locally)
3714 cluster = self.cfg.GetClusterInfo()
3715 utils.ForceDictType(self.hvparams, constants.HVS_PARAMETER_TYPES)
3716 filled_hvp = objects.FillDict(cluster.hvparams[instance.hypervisor],
3718 filled_hvp.update(self.hvparams)
3719 hv_type = hypervisor.GetHypervisor(instance.hypervisor)
3720 hv_type.CheckParameterSyntax(filled_hvp)
3721 _CheckHVParams(self, instance.all_nodes, instance.hypervisor, filled_hvp)
3722 self.op.hvparams = self.hvparams
3724 _CheckNodeOnline(self, instance.primary_node)
3726 bep = self.cfg.GetClusterInfo().FillBE(instance)
3727 # check bridges existence
3728 _CheckInstanceBridgesExist(self, instance)
3730 remote_info = self.rpc.call_instance_info(instance.primary_node,
3732 instance.hypervisor)
3733 remote_info.Raise("Error checking node %s" % instance.primary_node,
3734 prereq=True, ecode=errors.ECODE_ENVIRON)
3735 if not remote_info.payload: # not running already
3736 _CheckNodeFreeMemory(self, instance.primary_node,
3737 "starting instance %s" % instance.name,
3738 bep[constants.BE_MEMORY], instance.hypervisor)
3740 def Exec(self, feedback_fn):
3741 """Start the instance.
3744 instance = self.instance
3745 force = self.op.force
3747 self.cfg.MarkInstanceUp(instance.name)
3749 node_current = instance.primary_node
3751 _StartInstanceDisks(self, instance, force)
3753 result = self.rpc.call_instance_start(node_current, instance,
3754 self.hvparams, self.beparams)
3755 msg = result.fail_msg
3757 _ShutdownInstanceDisks(self, instance)
3758 raise errors.OpExecError("Could not start instance: %s" % msg)
3761 class LURebootInstance(LogicalUnit):
3762 """Reboot an instance.
3765 HPATH = "instance-reboot"
3766 HTYPE = constants.HTYPE_INSTANCE
3767 _OP_REQP = ["instance_name", "ignore_secondaries", "reboot_type"]
3770 def CheckArguments(self):
3771 """Check the arguments.
3774 self.shutdown_timeout = getattr(self.op, "shutdown_timeout",
3775 constants.DEFAULT_SHUTDOWN_TIMEOUT)
3777 def ExpandNames(self):
3778 if self.op.reboot_type not in [constants.INSTANCE_REBOOT_SOFT,
3779 constants.INSTANCE_REBOOT_HARD,
3780 constants.INSTANCE_REBOOT_FULL]:
3781 raise errors.ParameterError("reboot type not in [%s, %s, %s]" %
3782 (constants.INSTANCE_REBOOT_SOFT,
3783 constants.INSTANCE_REBOOT_HARD,
3784 constants.INSTANCE_REBOOT_FULL))
3785 self._ExpandAndLockInstance()
3787 def BuildHooksEnv(self):
3790 This runs on master, primary and secondary nodes of the instance.
3794 "IGNORE_SECONDARIES": self.op.ignore_secondaries,
3795 "REBOOT_TYPE": self.op.reboot_type,
3796 "SHUTDOWN_TIMEOUT": self.shutdown_timeout,
3798 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
3799 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
3802 def CheckPrereq(self):
3803 """Check prerequisites.
3805 This checks that the instance is in the cluster.
3808 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3809 assert self.instance is not None, \
3810 "Cannot retrieve locked instance %s" % self.op.instance_name
3812 _CheckNodeOnline(self, instance.primary_node)
3814 # check bridges existence
3815 _CheckInstanceBridgesExist(self, instance)
3817 def Exec(self, feedback_fn):
3818 """Reboot the instance.
3821 instance = self.instance
3822 ignore_secondaries = self.op.ignore_secondaries
3823 reboot_type = self.op.reboot_type
3825 node_current = instance.primary_node
3827 if reboot_type in [constants.INSTANCE_REBOOT_SOFT,
3828 constants.INSTANCE_REBOOT_HARD]:
3829 for disk in instance.disks:
3830 self.cfg.SetDiskID(disk, node_current)
3831 result = self.rpc.call_instance_reboot(node_current, instance,
3833 self.shutdown_timeout)
3834 result.Raise("Could not reboot instance")
3836 result = self.rpc.call_instance_shutdown(node_current, instance,
3837 self.shutdown_timeout)
3838 result.Raise("Could not shutdown instance for full reboot")
3839 _ShutdownInstanceDisks(self, instance)
3840 _StartInstanceDisks(self, instance, ignore_secondaries)
3841 result = self.rpc.call_instance_start(node_current, instance, None, None)
3842 msg = result.fail_msg
3844 _ShutdownInstanceDisks(self, instance)
3845 raise errors.OpExecError("Could not start instance for"
3846 " full reboot: %s" % msg)
3848 self.cfg.MarkInstanceUp(instance.name)
3851 class LUShutdownInstance(LogicalUnit):
3852 """Shutdown an instance.
3855 HPATH = "instance-stop"
3856 HTYPE = constants.HTYPE_INSTANCE
3857 _OP_REQP = ["instance_name"]
3860 def CheckArguments(self):
3861 """Check the arguments.
3864 self.timeout = getattr(self.op, "timeout",
3865 constants.DEFAULT_SHUTDOWN_TIMEOUT)
3867 def ExpandNames(self):
3868 self._ExpandAndLockInstance()
3870 def BuildHooksEnv(self):
3873 This runs on master, primary and secondary nodes of the instance.
3876 env = _BuildInstanceHookEnvByObject(self, self.instance)
3877 env["TIMEOUT"] = self.timeout
3878 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
3881 def CheckPrereq(self):
3882 """Check prerequisites.
3884 This checks that the instance is in the cluster.
3887 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3888 assert self.instance is not None, \
3889 "Cannot retrieve locked instance %s" % self.op.instance_name
3890 _CheckNodeOnline(self, self.instance.primary_node)
3892 def Exec(self, feedback_fn):
3893 """Shutdown the instance.
3896 instance = self.instance
3897 node_current = instance.primary_node
3898 timeout = self.timeout
3899 self.cfg.MarkInstanceDown(instance.name)
3900 result = self.rpc.call_instance_shutdown(node_current, instance, timeout)
3901 msg = result.fail_msg
3903 self.proc.LogWarning("Could not shutdown instance: %s" % msg)
3905 _ShutdownInstanceDisks(self, instance)
3908 class LUReinstallInstance(LogicalUnit):
3909 """Reinstall an instance.
3912 HPATH = "instance-reinstall"
3913 HTYPE = constants.HTYPE_INSTANCE
3914 _OP_REQP = ["instance_name"]
3917 def ExpandNames(self):
3918 self._ExpandAndLockInstance()
3920 def BuildHooksEnv(self):
3923 This runs on master, primary and secondary nodes of the instance.
3926 env = _BuildInstanceHookEnvByObject(self, self.instance)
3927 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
3930 def CheckPrereq(self):
3931 """Check prerequisites.
3933 This checks that the instance is in the cluster and is not running.
3936 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3937 assert instance is not None, \
3938 "Cannot retrieve locked instance %s" % self.op.instance_name
3939 _CheckNodeOnline(self, instance.primary_node)
3941 if instance.disk_template == constants.DT_DISKLESS:
3942 raise errors.OpPrereqError("Instance '%s' has no disks" %
3943 self.op.instance_name,
3945 if instance.admin_up:
3946 raise errors.OpPrereqError("Instance '%s' is marked to be up" %
3947 self.op.instance_name,
3949 remote_info = self.rpc.call_instance_info(instance.primary_node,
3951 instance.hypervisor)
3952 remote_info.Raise("Error checking node %s" % instance.primary_node,
3953 prereq=True, ecode=errors.ECODE_ENVIRON)
3954 if remote_info.payload:
3955 raise errors.OpPrereqError("Instance '%s' is running on the node %s" %
3956 (self.op.instance_name,
3957 instance.primary_node),
3960 self.op.os_type = getattr(self.op, "os_type", None)
3961 self.op.force_variant = getattr(self.op, "force_variant", False)
3962 if self.op.os_type is not None:
3964 pnode = _ExpandNodeName(self.cfg, instance.primary_node)
3965 result = self.rpc.call_os_get(pnode, self.op.os_type)
3966 result.Raise("OS '%s' not in supported OS list for primary node %s" %
3967 (self.op.os_type, pnode),
3968 prereq=True, ecode=errors.ECODE_INVAL)
3969 if not self.op.force_variant:
3970 _CheckOSVariant(result.payload, self.op.os_type)
3972 self.instance = instance
3974 def Exec(self, feedback_fn):
3975 """Reinstall the instance.
3978 inst = self.instance
3980 if self.op.os_type is not None:
3981 feedback_fn("Changing OS to '%s'..." % self.op.os_type)
3982 inst.os = self.op.os_type
3983 self.cfg.Update(inst, feedback_fn)
3985 _StartInstanceDisks(self, inst, None)
3987 feedback_fn("Running the instance OS create scripts...")
3988 # FIXME: pass debug option from opcode to backend
3989 result = self.rpc.call_instance_os_add(inst.primary_node, inst, True,
3990 self.op.debug_level)
3991 result.Raise("Could not install OS for instance %s on node %s" %
3992 (inst.name, inst.primary_node))
3994 _ShutdownInstanceDisks(self, inst)
3997 class LURecreateInstanceDisks(LogicalUnit):
3998 """Recreate an instance's missing disks.
4001 HPATH = "instance-recreate-disks"
4002 HTYPE = constants.HTYPE_INSTANCE
4003 _OP_REQP = ["instance_name", "disks"]
4006 def CheckArguments(self):
4007 """Check the arguments.
4010 if not isinstance(self.op.disks, list):
4011 raise errors.OpPrereqError("Invalid disks parameter", errors.ECODE_INVAL)
4012 for item in self.op.disks:
4013 if (not isinstance(item, int) or
4015 raise errors.OpPrereqError("Invalid disk specification '%s'" %
4016 str(item), errors.ECODE_INVAL)
4018 def ExpandNames(self):
4019 self._ExpandAndLockInstance()
4021 def BuildHooksEnv(self):
4024 This runs on master, primary and secondary nodes of the instance.
4027 env = _BuildInstanceHookEnvByObject(self, self.instance)
4028 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
4031 def CheckPrereq(self):
4032 """Check prerequisites.
4034 This checks that the instance is in the cluster and is not running.
4037 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
4038 assert instance is not None, \
4039 "Cannot retrieve locked instance %s" % self.op.instance_name
4040 _CheckNodeOnline(self, instance.primary_node)
4042 if instance.disk_template == constants.DT_DISKLESS:
4043 raise errors.OpPrereqError("Instance '%s' has no disks" %
4044 self.op.instance_name, errors.ECODE_INVAL)
4045 if instance.admin_up:
4046 raise errors.OpPrereqError("Instance '%s' is marked to be up" %
4047 self.op.instance_name, errors.ECODE_STATE)
4048 remote_info = self.rpc.call_instance_info(instance.primary_node,
4050 instance.hypervisor)
4051 remote_info.Raise("Error checking node %s" % instance.primary_node,
4052 prereq=True, ecode=errors.ECODE_ENVIRON)
4053 if remote_info.payload:
4054 raise errors.OpPrereqError("Instance '%s' is running on the node %s" %
4055 (self.op.instance_name,
4056 instance.primary_node), errors.ECODE_STATE)
4058 if not self.op.disks:
4059 self.op.disks = range(len(instance.disks))
4061 for idx in self.op.disks:
4062 if idx >= len(instance.disks):
4063 raise errors.OpPrereqError("Invalid disk index passed '%s'" % idx,
4066 self.instance = instance
4068 def Exec(self, feedback_fn):
4069 """Recreate the disks.
4073 for idx, _ in enumerate(self.instance.disks):
4074 if idx not in self.op.disks: # disk idx has not been passed in
4078 _CreateDisks(self, self.instance, to_skip=to_skip)
4081 class LURenameInstance(LogicalUnit):
4082 """Rename an instance.
4085 HPATH = "instance-rename"
4086 HTYPE = constants.HTYPE_INSTANCE
4087 _OP_REQP = ["instance_name", "new_name"]
4089 def BuildHooksEnv(self):
4092 This runs on master, primary and secondary nodes of the instance.
4095 env = _BuildInstanceHookEnvByObject(self, self.instance)
4096 env["INSTANCE_NEW_NAME"] = self.op.new_name
4097 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
4100 def CheckPrereq(self):
4101 """Check prerequisites.
4103 This checks that the instance is in the cluster and is not running.
4106 self.op.instance_name = _ExpandInstanceName(self.cfg,
4107 self.op.instance_name)
4108 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
4109 assert instance is not None
4110 _CheckNodeOnline(self, instance.primary_node)
4112 if instance.admin_up:
4113 raise errors.OpPrereqError("Instance '%s' is marked to be up" %
4114 self.op.instance_name, errors.ECODE_STATE)
4115 remote_info = self.rpc.call_instance_info(instance.primary_node,
4117 instance.hypervisor)
4118 remote_info.Raise("Error checking node %s" % instance.primary_node,
4119 prereq=True, ecode=errors.ECODE_ENVIRON)
4120 if remote_info.payload:
4121 raise errors.OpPrereqError("Instance '%s' is running on the node %s" %
4122 (self.op.instance_name,
4123 instance.primary_node), errors.ECODE_STATE)
4124 self.instance = instance
4126 # new name verification
4127 name_info = utils.GetHostInfo(self.op.new_name)
4129 self.op.new_name = new_name = name_info.name
4130 instance_list = self.cfg.GetInstanceList()
4131 if new_name in instance_list:
4132 raise errors.OpPrereqError("Instance '%s' is already in the cluster" %
4133 new_name, errors.ECODE_EXISTS)
4135 if not getattr(self.op, "ignore_ip", False):
4136 if utils.TcpPing(name_info.ip, constants.DEFAULT_NODED_PORT):
4137 raise errors.OpPrereqError("IP %s of instance %s already in use" %
4138 (name_info.ip, new_name),
4139 errors.ECODE_NOTUNIQUE)
4142 def Exec(self, feedback_fn):
4143 """Reinstall the instance.
4146 inst = self.instance
4147 old_name = inst.name
4149 if inst.disk_template == constants.DT_FILE:
4150 old_file_storage_dir = os.path.dirname(inst.disks[0].logical_id[1])
4152 self.cfg.RenameInstance(inst.name, self.op.new_name)
4153 # Change the instance lock. This is definitely safe while we hold the BGL
4154 self.context.glm.remove(locking.LEVEL_INSTANCE, old_name)
4155 self.context.glm.add(locking.LEVEL_INSTANCE, self.op.new_name)
4157 # re-read the instance from the configuration after rename
4158 inst = self.cfg.GetInstanceInfo(self.op.new_name)
4160 if inst.disk_template == constants.DT_FILE:
4161 new_file_storage_dir = os.path.dirname(inst.disks[0].logical_id[1])
4162 result = self.rpc.call_file_storage_dir_rename(inst.primary_node,
4163 old_file_storage_dir,
4164 new_file_storage_dir)
4165 result.Raise("Could not rename on node %s directory '%s' to '%s'"
4166 " (but the instance has been renamed in Ganeti)" %
4167 (inst.primary_node, old_file_storage_dir,
4168 new_file_storage_dir))
4170 _StartInstanceDisks(self, inst, None)
4172 result = self.rpc.call_instance_run_rename(inst.primary_node, inst,
4173 old_name, self.op.debug_level)
4174 msg = result.fail_msg
4176 msg = ("Could not run OS rename script for instance %s on node %s"
4177 " (but the instance has been renamed in Ganeti): %s" %
4178 (inst.name, inst.primary_node, msg))
4179 self.proc.LogWarning(msg)
4181 _ShutdownInstanceDisks(self, inst)
4184 class LURemoveInstance(LogicalUnit):
4185 """Remove an instance.
4188 HPATH = "instance-remove"
4189 HTYPE = constants.HTYPE_INSTANCE
4190 _OP_REQP = ["instance_name", "ignore_failures"]
4193 def CheckArguments(self):
4194 """Check the arguments.
4197 self.shutdown_timeout = getattr(self.op, "shutdown_timeout",
4198 constants.DEFAULT_SHUTDOWN_TIMEOUT)
4200 def ExpandNames(self):
4201 self._ExpandAndLockInstance()
4202 self.needed_locks[locking.LEVEL_NODE] = []
4203 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
4205 def DeclareLocks(self, level):
4206 if level == locking.LEVEL_NODE:
4207 self._LockInstancesNodes()
4209 def BuildHooksEnv(self):
4212 This runs on master, primary and secondary nodes of the instance.
4215 env = _BuildInstanceHookEnvByObject(self, self.instance)
4216 env["SHUTDOWN_TIMEOUT"] = self.shutdown_timeout
4217 nl = [self.cfg.GetMasterNode()]
4218 nl_post = list(self.instance.all_nodes) + nl
4219 return env, nl, nl_post
4221 def CheckPrereq(self):
4222 """Check prerequisites.
4224 This checks that the instance is in the cluster.
4227 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
4228 assert self.instance is not None, \
4229 "Cannot retrieve locked instance %s" % self.op.instance_name
4231 def Exec(self, feedback_fn):
4232 """Remove the instance.
4235 instance = self.instance
4236 logging.info("Shutting down instance %s on node %s",
4237 instance.name, instance.primary_node)
4239 result = self.rpc.call_instance_shutdown(instance.primary_node, instance,
4240 self.shutdown_timeout)
4241 msg = result.fail_msg
4243 if self.op.ignore_failures:
4244 feedback_fn("Warning: can't shutdown instance: %s" % msg)
4246 raise errors.OpExecError("Could not shutdown instance %s on"
4248 (instance.name, instance.primary_node, msg))
4250 logging.info("Removing block devices for instance %s", instance.name)
4252 if not _RemoveDisks(self, instance):
4253 if self.op.ignore_failures:
4254 feedback_fn("Warning: can't remove instance's disks")
4256 raise errors.OpExecError("Can't remove instance's disks")
4258 logging.info("Removing instance %s out of cluster config", instance.name)
4260 self.cfg.RemoveInstance(instance.name)
4261 self.remove_locks[locking.LEVEL_INSTANCE] = instance.name
4264 class LUQueryInstances(NoHooksLU):
4265 """Logical unit for querying instances.
4268 # pylint: disable-msg=W0142
4269 _OP_REQP = ["output_fields", "names", "use_locking"]
4271 _SIMPLE_FIELDS = ["name", "os", "network_port", "hypervisor",
4272 "serial_no", "ctime", "mtime", "uuid"]
4273 _FIELDS_STATIC = utils.FieldSet(*["name", "os", "pnode", "snodes",
4275 "disk_template", "ip", "mac", "bridge",
4276 "nic_mode", "nic_link",
4277 "sda_size", "sdb_size", "vcpus", "tags",
4278 "network_port", "beparams",
4279 r"(disk)\.(size)/([0-9]+)",
4280 r"(disk)\.(sizes)", "disk_usage",
4281 r"(nic)\.(mac|ip|mode|link)/([0-9]+)",
4282 r"(nic)\.(bridge)/([0-9]+)",
4283 r"(nic)\.(macs|ips|modes|links|bridges)",
4284 r"(disk|nic)\.(count)",
4286 ] + _SIMPLE_FIELDS +
4288 for name in constants.HVS_PARAMETERS
4289 if name not in constants.HVC_GLOBALS] +
4291 for name in constants.BES_PARAMETERS])
4292 _FIELDS_DYNAMIC = utils.FieldSet("oper_state", "oper_ram", "status")
4295 def ExpandNames(self):
4296 _CheckOutputFields(static=self._FIELDS_STATIC,
4297 dynamic=self._FIELDS_DYNAMIC,
4298 selected=self.op.output_fields)
4300 self.needed_locks = {}
4301 self.share_locks[locking.LEVEL_INSTANCE] = 1
4302 self.share_locks[locking.LEVEL_NODE] = 1
4305 self.wanted = _GetWantedInstances(self, self.op.names)
4307 self.wanted = locking.ALL_SET
4309 self.do_node_query = self._FIELDS_STATIC.NonMatching(self.op.output_fields)
4310 self.do_locking = self.do_node_query and self.op.use_locking
4312 self.needed_locks[locking.LEVEL_INSTANCE] = self.wanted
4313 self.needed_locks[locking.LEVEL_NODE] = []
4314 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
4316 def DeclareLocks(self, level):
4317 if level == locking.LEVEL_NODE and self.do_locking:
4318 self._LockInstancesNodes()
4320 def CheckPrereq(self):
4321 """Check prerequisites.
4326 def Exec(self, feedback_fn):
4327 """Computes the list of nodes and their attributes.
4330 # pylint: disable-msg=R0912
4331 # way too many branches here
4332 all_info = self.cfg.GetAllInstancesInfo()
4333 if self.wanted == locking.ALL_SET:
4334 # caller didn't specify instance names, so ordering is not important
4336 instance_names = self.acquired_locks[locking.LEVEL_INSTANCE]
4338 instance_names = all_info.keys()
4339 instance_names = utils.NiceSort(instance_names)
4341 # caller did specify names, so we must keep the ordering
4343 tgt_set = self.acquired_locks[locking.LEVEL_INSTANCE]
4345 tgt_set = all_info.keys()
4346 missing = set(self.wanted).difference(tgt_set)
4348 raise errors.OpExecError("Some instances were removed before"
4349 " retrieving their data: %s" % missing)
4350 instance_names = self.wanted
4352 instance_list = [all_info[iname] for iname in instance_names]
4354 # begin data gathering
4356 nodes = frozenset([inst.primary_node for inst in instance_list])
4357 hv_list = list(set([inst.hypervisor for inst in instance_list]))
4361 if self.do_node_query:
4363 node_data = self.rpc.call_all_instances_info(nodes, hv_list)
4365 result = node_data[name]
4367 # offline nodes will be in both lists
4368 off_nodes.append(name)
4370 bad_nodes.append(name)
4373 live_data.update(result.payload)
4374 # else no instance is alive
4376 live_data = dict([(name, {}) for name in instance_names])
4378 # end data gathering
4383 cluster = self.cfg.GetClusterInfo()
4384 for instance in instance_list:
4386 i_hv = cluster.FillHV(instance, skip_globals=True)
4387 i_be = cluster.FillBE(instance)
4388 i_nicp = [objects.FillDict(cluster.nicparams[constants.PP_DEFAULT],
4389 nic.nicparams) for nic in instance.nics]
4390 for field in self.op.output_fields:
4391 st_match = self._FIELDS_STATIC.Matches(field)
4392 if field in self._SIMPLE_FIELDS:
4393 val = getattr(instance, field)
4394 elif field == "pnode":
4395 val = instance.primary_node
4396 elif field == "snodes":
4397 val = list(instance.secondary_nodes)
4398 elif field == "admin_state":
4399 val = instance.admin_up
4400 elif field == "oper_state":
4401 if instance.primary_node in bad_nodes:
4404 val = bool(live_data.get(instance.name))
4405 elif field == "status":
4406 if instance.primary_node in off_nodes:
4407 val = "ERROR_nodeoffline"
4408 elif instance.primary_node in bad_nodes:
4409 val = "ERROR_nodedown"
4411 running = bool(live_data.get(instance.name))
4413 if instance.admin_up:
4418 if instance.admin_up:
4422 elif field == "oper_ram":
4423 if instance.primary_node in bad_nodes:
4425 elif instance.name in live_data:
4426 val = live_data[instance.name].get("memory", "?")
4429 elif field == "vcpus":
4430 val = i_be[constants.BE_VCPUS]
4431 elif field == "disk_template":
4432 val = instance.disk_template
4435 val = instance.nics[0].ip
4438 elif field == "nic_mode":
4440 val = i_nicp[0][constants.NIC_MODE]
4443 elif field == "nic_link":
4445 val = i_nicp[0][constants.NIC_LINK]
4448 elif field == "bridge":
4449 if (instance.nics and
4450 i_nicp[0][constants.NIC_MODE] == constants.NIC_MODE_BRIDGED):
4451 val = i_nicp[0][constants.NIC_LINK]
4454 elif field == "mac":
4456 val = instance.nics[0].mac
4459 elif field == "sda_size" or field == "sdb_size":
4460 idx = ord(field[2]) - ord('a')
4462 val = instance.FindDisk(idx).size
4463 except errors.OpPrereqError:
4465 elif field == "disk_usage": # total disk usage per node
4466 disk_sizes = [{'size': disk.size} for disk in instance.disks]
4467 val = _ComputeDiskSize(instance.disk_template, disk_sizes)
4468 elif field == "tags":
4469 val = list(instance.GetTags())
4470 elif field == "hvparams":
4472 elif (field.startswith(HVPREFIX) and
4473 field[len(HVPREFIX):] in constants.HVS_PARAMETERS and
4474 field[len(HVPREFIX):] not in constants.HVC_GLOBALS):
4475 val = i_hv.get(field[len(HVPREFIX):], None)
4476 elif field == "beparams":
4478 elif (field.startswith(BEPREFIX) and
4479 field[len(BEPREFIX):] in constants.BES_PARAMETERS):
4480 val = i_be.get(field[len(BEPREFIX):], None)
4481 elif st_match and st_match.groups():
4482 # matches a variable list
4483 st_groups = st_match.groups()
4484 if st_groups and st_groups[0] == "disk":
4485 if st_groups[1] == "count":
4486 val = len(instance.disks)
4487 elif st_groups[1] == "sizes":
4488 val = [disk.size for disk in instance.disks]
4489 elif st_groups[1] == "size":
4491 val = instance.FindDisk(st_groups[2]).size
4492 except errors.OpPrereqError:
4495 assert False, "Unhandled disk parameter"
4496 elif st_groups[0] == "nic":
4497 if st_groups[1] == "count":
4498 val = len(instance.nics)
4499 elif st_groups[1] == "macs":
4500 val = [nic.mac for nic in instance.nics]
4501 elif st_groups[1] == "ips":
4502 val = [nic.ip for nic in instance.nics]
4503 elif st_groups[1] == "modes":
4504 val = [nicp[constants.NIC_MODE] for nicp in i_nicp]
4505 elif st_groups[1] == "links":
4506 val = [nicp[constants.NIC_LINK] for nicp in i_nicp]
4507 elif st_groups[1] == "bridges":
4510 if nicp[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
4511 val.append(nicp[constants.NIC_LINK])
4516 nic_idx = int(st_groups[2])
4517 if nic_idx >= len(instance.nics):
4520 if st_groups[1] == "mac":
4521 val = instance.nics[nic_idx].mac
4522 elif st_groups[1] == "ip":
4523 val = instance.nics[nic_idx].ip
4524 elif st_groups[1] == "mode":
4525 val = i_nicp[nic_idx][constants.NIC_MODE]
4526 elif st_groups[1] == "link":
4527 val = i_nicp[nic_idx][constants.NIC_LINK]
4528 elif st_groups[1] == "bridge":
4529 nic_mode = i_nicp[nic_idx][constants.NIC_MODE]
4530 if nic_mode == constants.NIC_MODE_BRIDGED:
4531 val = i_nicp[nic_idx][constants.NIC_LINK]
4535 assert False, "Unhandled NIC parameter"
4537 assert False, ("Declared but unhandled variable parameter '%s'" %
4540 assert False, "Declared but unhandled parameter '%s'" % field
4547 class LUFailoverInstance(LogicalUnit):
4548 """Failover an instance.
4551 HPATH = "instance-failover"
4552 HTYPE = constants.HTYPE_INSTANCE
4553 _OP_REQP = ["instance_name", "ignore_consistency"]
4556 def CheckArguments(self):
4557 """Check the arguments.
4560 self.shutdown_timeout = getattr(self.op, "shutdown_timeout",
4561 constants.DEFAULT_SHUTDOWN_TIMEOUT)
4563 def ExpandNames(self):
4564 self._ExpandAndLockInstance()
4565 self.needed_locks[locking.LEVEL_NODE] = []
4566 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
4568 def DeclareLocks(self, level):
4569 if level == locking.LEVEL_NODE:
4570 self._LockInstancesNodes()
4572 def BuildHooksEnv(self):
4575 This runs on master, primary and secondary nodes of the instance.
4578 instance = self.instance
4579 source_node = instance.primary_node
4580 target_node = instance.secondary_nodes[0]
4582 "IGNORE_CONSISTENCY": self.op.ignore_consistency,
4583 "SHUTDOWN_TIMEOUT": self.shutdown_timeout,
4584 "OLD_PRIMARY": source_node,
4585 "OLD_SECONDARY": target_node,
4586 "NEW_PRIMARY": target_node,
4587 "NEW_SECONDARY": source_node,
4589 env.update(_BuildInstanceHookEnvByObject(self, instance))
4590 nl = [self.cfg.GetMasterNode()] + list(instance.secondary_nodes)
4592 nl_post.append(source_node)
4593 return env, nl, nl_post
4595 def CheckPrereq(self):
4596 """Check prerequisites.
4598 This checks that the instance is in the cluster.
4601 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
4602 assert self.instance is not None, \
4603 "Cannot retrieve locked instance %s" % self.op.instance_name
4605 bep = self.cfg.GetClusterInfo().FillBE(instance)
4606 if instance.disk_template not in constants.DTS_NET_MIRROR:
4607 raise errors.OpPrereqError("Instance's disk layout is not"
4608 " network mirrored, cannot failover.",
4611 secondary_nodes = instance.secondary_nodes
4612 if not secondary_nodes:
4613 raise errors.ProgrammerError("no secondary node but using "
4614 "a mirrored disk template")
4616 target_node = secondary_nodes[0]
4617 _CheckNodeOnline(self, target_node)
4618 _CheckNodeNotDrained(self, target_node)
4619 if instance.admin_up:
4620 # check memory requirements on the secondary node
4621 _CheckNodeFreeMemory(self, target_node, "failing over instance %s" %
4622 instance.name, bep[constants.BE_MEMORY],
4623 instance.hypervisor)
4625 self.LogInfo("Not checking memory on the secondary node as"
4626 " instance will not be started")
4628 # check bridge existance
4629 _CheckInstanceBridgesExist(self, instance, node=target_node)
4631 def Exec(self, feedback_fn):
4632 """Failover an instance.
4634 The failover is done by shutting it down on its present node and
4635 starting it on the secondary.
4638 instance = self.instance
4640 source_node = instance.primary_node
4641 target_node = instance.secondary_nodes[0]
4643 if instance.admin_up:
4644 feedback_fn("* checking disk consistency between source and target")
4645 for dev in instance.disks:
4646 # for drbd, these are drbd over lvm
4647 if not _CheckDiskConsistency(self, dev, target_node, False):
4648 if not self.op.ignore_consistency:
4649 raise errors.OpExecError("Disk %s is degraded on target node,"
4650 " aborting failover." % dev.iv_name)
4652 feedback_fn("* not checking disk consistency as instance is not running")
4654 feedback_fn("* shutting down instance on source node")
4655 logging.info("Shutting down instance %s on node %s",
4656 instance.name, source_node)
4658 result = self.rpc.call_instance_shutdown(source_node, instance,
4659 self.shutdown_timeout)
4660 msg = result.fail_msg
4662 if self.op.ignore_consistency:
4663 self.proc.LogWarning("Could not shutdown instance %s on node %s."
4664 " Proceeding anyway. Please make sure node"
4665 " %s is down. Error details: %s",
4666 instance.name, source_node, source_node, msg)
4668 raise errors.OpExecError("Could not shutdown instance %s on"
4670 (instance.name, source_node, msg))
4672 feedback_fn("* deactivating the instance's disks on source node")
4673 if not _ShutdownInstanceDisks(self, instance, ignore_primary=True):
4674 raise errors.OpExecError("Can't shut down the instance's disks.")
4676 instance.primary_node = target_node
4677 # distribute new instance config to the other nodes
4678 self.cfg.Update(instance, feedback_fn)
4680 # Only start the instance if it's marked as up
4681 if instance.admin_up:
4682 feedback_fn("* activating the instance's disks on target node")
4683 logging.info("Starting instance %s on node %s",
4684 instance.name, target_node)
4686 disks_ok, _ = _AssembleInstanceDisks(self, instance,
4687 ignore_secondaries=True)
4689 _ShutdownInstanceDisks(self, instance)
4690 raise errors.OpExecError("Can't activate the instance's disks")
4692 feedback_fn("* starting the instance on the target node")
4693 result = self.rpc.call_instance_start(target_node, instance, None, None)
4694 msg = result.fail_msg
4696 _ShutdownInstanceDisks(self, instance)
4697 raise errors.OpExecError("Could not start instance %s on node %s: %s" %
4698 (instance.name, target_node, msg))
4701 class LUMigrateInstance(LogicalUnit):
4702 """Migrate an instance.
4704 This is migration without shutting down, compared to the failover,
4705 which is done with shutdown.
4708 HPATH = "instance-migrate"
4709 HTYPE = constants.HTYPE_INSTANCE
4710 _OP_REQP = ["instance_name", "live", "cleanup"]
4714 def ExpandNames(self):
4715 self._ExpandAndLockInstance()
4717 self.needed_locks[locking.LEVEL_NODE] = []
4718 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
4720 self._migrater = TLMigrateInstance(self, self.op.instance_name,
4721 self.op.live, self.op.cleanup)
4722 self.tasklets = [self._migrater]
4724 def DeclareLocks(self, level):
4725 if level == locking.LEVEL_NODE:
4726 self._LockInstancesNodes()
4728 def BuildHooksEnv(self):
4731 This runs on master, primary and secondary nodes of the instance.
4734 instance = self._migrater.instance
4735 source_node = instance.primary_node
4736 target_node = instance.secondary_nodes[0]
4737 env = _BuildInstanceHookEnvByObject(self, instance)
4738 env["MIGRATE_LIVE"] = self.op.live
4739 env["MIGRATE_CLEANUP"] = self.op.cleanup
4741 "OLD_PRIMARY": source_node,
4742 "OLD_SECONDARY": target_node,
4743 "NEW_PRIMARY": target_node,
4744 "NEW_SECONDARY": source_node,
4746 nl = [self.cfg.GetMasterNode()] + list(instance.secondary_nodes)
4748 nl_post.append(source_node)
4749 return env, nl, nl_post
4752 class LUMoveInstance(LogicalUnit):
4753 """Move an instance by data-copying.
4756 HPATH = "instance-move"
4757 HTYPE = constants.HTYPE_INSTANCE
4758 _OP_REQP = ["instance_name", "target_node"]
4761 def CheckArguments(self):
4762 """Check the arguments.
4765 self.shutdown_timeout = getattr(self.op, "shutdown_timeout",
4766 constants.DEFAULT_SHUTDOWN_TIMEOUT)
4768 def ExpandNames(self):
4769 self._ExpandAndLockInstance()
4770 target_node = _ExpandNodeName(self.cfg, self.op.target_node)
4771 self.op.target_node = target_node
4772 self.needed_locks[locking.LEVEL_NODE] = [target_node]
4773 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_APPEND
4775 def DeclareLocks(self, level):
4776 if level == locking.LEVEL_NODE:
4777 self._LockInstancesNodes(primary_only=True)
4779 def BuildHooksEnv(self):
4782 This runs on master, primary and secondary nodes of the instance.
4786 "TARGET_NODE": self.op.target_node,
4787 "SHUTDOWN_TIMEOUT": self.shutdown_timeout,
4789 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
4790 nl = [self.cfg.GetMasterNode()] + [self.instance.primary_node,
4791 self.op.target_node]
4794 def CheckPrereq(self):
4795 """Check prerequisites.
4797 This checks that the instance is in the cluster.
4800 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
4801 assert self.instance is not None, \
4802 "Cannot retrieve locked instance %s" % self.op.instance_name
4804 node = self.cfg.GetNodeInfo(self.op.target_node)
4805 assert node is not None, \
4806 "Cannot retrieve locked node %s" % self.op.target_node
4808 self.target_node = target_node = node.name
4810 if target_node == instance.primary_node:
4811 raise errors.OpPrereqError("Instance %s is already on the node %s" %
4812 (instance.name, target_node),
4815 bep = self.cfg.GetClusterInfo().FillBE(instance)
4817 for idx, dsk in enumerate(instance.disks):
4818 if dsk.dev_type not in (constants.LD_LV, constants.LD_FILE):
4819 raise errors.OpPrereqError("Instance disk %d has a complex layout,"
4820 " cannot copy" % idx, errors.ECODE_STATE)
4822 _CheckNodeOnline(self, target_node)
4823 _CheckNodeNotDrained(self, target_node)
4825 if instance.admin_up:
4826 # check memory requirements on the secondary node
4827 _CheckNodeFreeMemory(self, target_node, "failing over instance %s" %
4828 instance.name, bep[constants.BE_MEMORY],
4829 instance.hypervisor)
4831 self.LogInfo("Not checking memory on the secondary node as"
4832 " instance will not be started")
4834 # check bridge existance
4835 _CheckInstanceBridgesExist(self, instance, node=target_node)
4837 def Exec(self, feedback_fn):
4838 """Move an instance.
4840 The move is done by shutting it down on its present node, copying
4841 the data over (slow) and starting it on the new node.
4844 instance = self.instance
4846 source_node = instance.primary_node
4847 target_node = self.target_node
4849 self.LogInfo("Shutting down instance %s on source node %s",
4850 instance.name, source_node)
4852 result = self.rpc.call_instance_shutdown(source_node, instance,
4853 self.shutdown_timeout)
4854 msg = result.fail_msg
4856 if self.op.ignore_consistency:
4857 self.proc.LogWarning("Could not shutdown instance %s on node %s."
4858 " Proceeding anyway. Please make sure node"
4859 " %s is down. Error details: %s",
4860 instance.name, source_node, source_node, msg)
4862 raise errors.OpExecError("Could not shutdown instance %s on"
4864 (instance.name, source_node, msg))
4866 # create the target disks
4868 _CreateDisks(self, instance, target_node=target_node)
4869 except errors.OpExecError:
4870 self.LogWarning("Device creation failed, reverting...")
4872 _RemoveDisks(self, instance, target_node=target_node)
4874 self.cfg.ReleaseDRBDMinors(instance.name)
4877 cluster_name = self.cfg.GetClusterInfo().cluster_name
4880 # activate, get path, copy the data over
4881 for idx, disk in enumerate(instance.disks):
4882 self.LogInfo("Copying data for disk %d", idx)
4883 result = self.rpc.call_blockdev_assemble(target_node, disk,
4884 instance.name, True)
4886 self.LogWarning("Can't assemble newly created disk %d: %s",
4887 idx, result.fail_msg)
4888 errs.append(result.fail_msg)
4890 dev_path = result.payload
4891 result = self.rpc.call_blockdev_export(source_node, disk,
4892 target_node, dev_path,
4895 self.LogWarning("Can't copy data over for disk %d: %s",
4896 idx, result.fail_msg)
4897 errs.append(result.fail_msg)
4901 self.LogWarning("Some disks failed to copy, aborting")
4903 _RemoveDisks(self, instance, target_node=target_node)
4905 self.cfg.ReleaseDRBDMinors(instance.name)
4906 raise errors.OpExecError("Errors during disk copy: %s" %
4909 instance.primary_node = target_node
4910 self.cfg.Update(instance, feedback_fn)
4912 self.LogInfo("Removing the disks on the original node")
4913 _RemoveDisks(self, instance, target_node=source_node)
4915 # Only start the instance if it's marked as up
4916 if instance.admin_up:
4917 self.LogInfo("Starting instance %s on node %s",
4918 instance.name, target_node)
4920 disks_ok, _ = _AssembleInstanceDisks(self, instance,
4921 ignore_secondaries=True)
4923 _ShutdownInstanceDisks(self, instance)
4924 raise errors.OpExecError("Can't activate the instance's disks")
4926 result = self.rpc.call_instance_start(target_node, instance, None, None)
4927 msg = result.fail_msg
4929 _ShutdownInstanceDisks(self, instance)
4930 raise errors.OpExecError("Could not start instance %s on node %s: %s" %
4931 (instance.name, target_node, msg))
4934 class LUMigrateNode(LogicalUnit):
4935 """Migrate all instances from a node.
4938 HPATH = "node-migrate"
4939 HTYPE = constants.HTYPE_NODE
4940 _OP_REQP = ["node_name", "live"]
4943 def ExpandNames(self):
4944 self.op.node_name = _ExpandNodeName(self.cfg, self.op.node_name)
4946 self.needed_locks = {
4947 locking.LEVEL_NODE: [self.op.node_name],
4950 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_APPEND
4952 # Create tasklets for migrating instances for all instances on this node
4956 for inst in _GetNodePrimaryInstances(self.cfg, self.op.node_name):
4957 logging.debug("Migrating instance %s", inst.name)
4958 names.append(inst.name)
4960 tasklets.append(TLMigrateInstance(self, inst.name, self.op.live, False))
4962 self.tasklets = tasklets
4964 # Declare instance locks
4965 self.needed_locks[locking.LEVEL_INSTANCE] = names
4967 def DeclareLocks(self, level):
4968 if level == locking.LEVEL_NODE:
4969 self._LockInstancesNodes()
4971 def BuildHooksEnv(self):
4974 This runs on the master, the primary and all the secondaries.
4978 "NODE_NAME": self.op.node_name,
4981 nl = [self.cfg.GetMasterNode()]
4983 return (env, nl, nl)
4986 class TLMigrateInstance(Tasklet):
4987 def __init__(self, lu, instance_name, live, cleanup):
4988 """Initializes this class.
4991 Tasklet.__init__(self, lu)
4994 self.instance_name = instance_name
4996 self.cleanup = cleanup
4998 def CheckPrereq(self):
4999 """Check prerequisites.
5001 This checks that the instance is in the cluster.
5004 instance_name = _ExpandInstanceName(self.lu.cfg, self.instance_name)
5005 instance = self.cfg.GetInstanceInfo(instance_name)
5006 assert instance is not None
5008 if instance.disk_template != constants.DT_DRBD8:
5009 raise errors.OpPrereqError("Instance's disk layout is not"
5010 " drbd8, cannot migrate.", errors.ECODE_STATE)
5012 secondary_nodes = instance.secondary_nodes
5013 if not secondary_nodes:
5014 raise errors.ConfigurationError("No secondary node but using"
5015 " drbd8 disk template")
5017 i_be = self.cfg.GetClusterInfo().FillBE(instance)
5019 target_node = secondary_nodes[0]
5020 # check memory requirements on the secondary node
5021 _CheckNodeFreeMemory(self, target_node, "migrating instance %s" %
5022 instance.name, i_be[constants.BE_MEMORY],
5023 instance.hypervisor)
5025 # check bridge existance
5026 _CheckInstanceBridgesExist(self, instance, node=target_node)
5028 if not self.cleanup:
5029 _CheckNodeNotDrained(self, target_node)
5030 result = self.rpc.call_instance_migratable(instance.primary_node,
5032 result.Raise("Can't migrate, please use failover",
5033 prereq=True, ecode=errors.ECODE_STATE)
5035 self.instance = instance
5037 def _WaitUntilSync(self):
5038 """Poll with custom rpc for disk sync.
5040 This uses our own step-based rpc call.
5043 self.feedback_fn("* wait until resync is done")
5047 result = self.rpc.call_drbd_wait_sync(self.all_nodes,
5049 self.instance.disks)
5051 for node, nres in result.items():
5052 nres.Raise("Cannot resync disks on node %s" % node)
5053 node_done, node_percent = nres.payload
5054 all_done = all_done and node_done
5055 if node_percent is not None:
5056 min_percent = min(min_percent, node_percent)
5058 if min_percent < 100:
5059 self.feedback_fn(" - progress: %.1f%%" % min_percent)
5062 def _EnsureSecondary(self, node):
5063 """Demote a node to secondary.
5066 self.feedback_fn("* switching node %s to secondary mode" % node)
5068 for dev in self.instance.disks:
5069 self.cfg.SetDiskID(dev, node)
5071 result = self.rpc.call_blockdev_close(node, self.instance.name,
5072 self.instance.disks)
5073 result.Raise("Cannot change disk to secondary on node %s" % node)
5075 def _GoStandalone(self):
5076 """Disconnect from the network.
5079 self.feedback_fn("* changing into standalone mode")
5080 result = self.rpc.call_drbd_disconnect_net(self.all_nodes, self.nodes_ip,
5081 self.instance.disks)
5082 for node, nres in result.items():
5083 nres.Raise("Cannot disconnect disks node %s" % node)
5085 def _GoReconnect(self, multimaster):
5086 """Reconnect to the network.
5092 msg = "single-master"
5093 self.feedback_fn("* changing disks into %s mode" % msg)
5094 result = self.rpc.call_drbd_attach_net(self.all_nodes, self.nodes_ip,
5095 self.instance.disks,
5096 self.instance.name, multimaster)
5097 for node, nres in result.items():
5098 nres.Raise("Cannot change disks config on node %s" % node)
5100 def _ExecCleanup(self):
5101 """Try to cleanup after a failed migration.
5103 The cleanup is done by:
5104 - check that the instance is running only on one node
5105 (and update the config if needed)
5106 - change disks on its secondary node to secondary
5107 - wait until disks are fully synchronized
5108 - disconnect from the network
5109 - change disks into single-master mode
5110 - wait again until disks are fully synchronized
5113 instance = self.instance
5114 target_node = self.target_node
5115 source_node = self.source_node
5117 # check running on only one node
5118 self.feedback_fn("* checking where the instance actually runs"
5119 " (if this hangs, the hypervisor might be in"
5121 ins_l = self.rpc.call_instance_list(self.all_nodes, [instance.hypervisor])
5122 for node, result in ins_l.items():
5123 result.Raise("Can't contact node %s" % node)
5125 runningon_source = instance.name in ins_l[source_node].payload
5126 runningon_target = instance.name in ins_l[target_node].payload
5128 if runningon_source and runningon_target:
5129 raise errors.OpExecError("Instance seems to be running on two nodes,"
5130 " or the hypervisor is confused. You will have"
5131 " to ensure manually that it runs only on one"
5132 " and restart this operation.")
5134 if not (runningon_source or runningon_target):
5135 raise errors.OpExecError("Instance does not seem to be running at all."
5136 " In this case, it's safer to repair by"
5137 " running 'gnt-instance stop' to ensure disk"
5138 " shutdown, and then restarting it.")
5140 if runningon_target:
5141 # the migration has actually succeeded, we need to update the config
5142 self.feedback_fn("* instance running on secondary node (%s),"
5143 " updating config" % target_node)
5144 instance.primary_node = target_node
5145 self.cfg.Update(instance, self.feedback_fn)
5146 demoted_node = source_node
5148 self.feedback_fn("* instance confirmed to be running on its"
5149 " primary node (%s)" % source_node)
5150 demoted_node = target_node
5152 self._EnsureSecondary(demoted_node)
5154 self._WaitUntilSync()
5155 except errors.OpExecError:
5156 # we ignore here errors, since if the device is standalone, it
5157 # won't be able to sync
5159 self._GoStandalone()
5160 self._GoReconnect(False)
5161 self._WaitUntilSync()
5163 self.feedback_fn("* done")
5165 def _RevertDiskStatus(self):
5166 """Try to revert the disk status after a failed migration.
5169 target_node = self.target_node
5171 self._EnsureSecondary(target_node)
5172 self._GoStandalone()
5173 self._GoReconnect(False)
5174 self._WaitUntilSync()
5175 except errors.OpExecError, err:
5176 self.lu.LogWarning("Migration failed and I can't reconnect the"
5177 " drives: error '%s'\n"
5178 "Please look and recover the instance status" %
5181 def _AbortMigration(self):
5182 """Call the hypervisor code to abort a started migration.
5185 instance = self.instance
5186 target_node = self.target_node
5187 migration_info = self.migration_info
5189 abort_result = self.rpc.call_finalize_migration(target_node,
5193 abort_msg = abort_result.fail_msg
5195 logging.error("Aborting migration failed on target node %s: %s",
5196 target_node, abort_msg)
5197 # Don't raise an exception here, as we stil have to try to revert the
5198 # disk status, even if this step failed.
5200 def _ExecMigration(self):
5201 """Migrate an instance.
5203 The migrate is done by:
5204 - change the disks into dual-master mode
5205 - wait until disks are fully synchronized again
5206 - migrate the instance
5207 - change disks on the new secondary node (the old primary) to secondary
5208 - wait until disks are fully synchronized
5209 - change disks into single-master mode
5212 instance = self.instance
5213 target_node = self.target_node
5214 source_node = self.source_node
5216 self.feedback_fn("* checking disk consistency between source and target")
5217 for dev in instance.disks:
5218 if not _CheckDiskConsistency(self, dev, target_node, False):
5219 raise errors.OpExecError("Disk %s is degraded or not fully"
5220 " synchronized on target node,"
5221 " aborting migrate." % dev.iv_name)
5223 # First get the migration information from the remote node
5224 result = self.rpc.call_migration_info(source_node, instance)
5225 msg = result.fail_msg
5227 log_err = ("Failed fetching source migration information from %s: %s" %
5229 logging.error(log_err)
5230 raise errors.OpExecError(log_err)
5232 self.migration_info = migration_info = result.payload
5234 # Then switch the disks to master/master mode
5235 self._EnsureSecondary(target_node)
5236 self._GoStandalone()
5237 self._GoReconnect(True)
5238 self._WaitUntilSync()
5240 self.feedback_fn("* preparing %s to accept the instance" % target_node)
5241 result = self.rpc.call_accept_instance(target_node,
5244 self.nodes_ip[target_node])
5246 msg = result.fail_msg
5248 logging.error("Instance pre-migration failed, trying to revert"
5249 " disk status: %s", msg)
5250 self.feedback_fn("Pre-migration failed, aborting")
5251 self._AbortMigration()
5252 self._RevertDiskStatus()
5253 raise errors.OpExecError("Could not pre-migrate instance %s: %s" %
5254 (instance.name, msg))
5256 self.feedback_fn("* migrating instance to %s" % target_node)
5258 result = self.rpc.call_instance_migrate(source_node, instance,
5259 self.nodes_ip[target_node],
5261 msg = result.fail_msg
5263 logging.error("Instance migration failed, trying to revert"
5264 " disk status: %s", msg)
5265 self.feedback_fn("Migration failed, aborting")
5266 self._AbortMigration()
5267 self._RevertDiskStatus()
5268 raise errors.OpExecError("Could not migrate instance %s: %s" %
5269 (instance.name, msg))
5272 instance.primary_node = target_node
5273 # distribute new instance config to the other nodes
5274 self.cfg.Update(instance, self.feedback_fn)
5276 result = self.rpc.call_finalize_migration(target_node,
5280 msg = result.fail_msg
5282 logging.error("Instance migration succeeded, but finalization failed:"
5284 raise errors.OpExecError("Could not finalize instance migration: %s" %
5287 self._EnsureSecondary(source_node)
5288 self._WaitUntilSync()
5289 self._GoStandalone()
5290 self._GoReconnect(False)
5291 self._WaitUntilSync()
5293 self.feedback_fn("* done")
5295 def Exec(self, feedback_fn):
5296 """Perform the migration.
5299 feedback_fn("Migrating instance %s" % self.instance.name)
5301 self.feedback_fn = feedback_fn
5303 self.source_node = self.instance.primary_node
5304 self.target_node = self.instance.secondary_nodes[0]
5305 self.all_nodes = [self.source_node, self.target_node]
5307 self.source_node: self.cfg.GetNodeInfo(self.source_node).secondary_ip,
5308 self.target_node: self.cfg.GetNodeInfo(self.target_node).secondary_ip,
5312 return self._ExecCleanup()
5314 return self._ExecMigration()
5317 def _CreateBlockDev(lu, node, instance, device, force_create,
5319 """Create a tree of block devices on a given node.
5321 If this device type has to be created on secondaries, create it and
5324 If not, just recurse to children keeping the same 'force' value.
5326 @param lu: the lu on whose behalf we execute
5327 @param node: the node on which to create the device
5328 @type instance: L{objects.Instance}
5329 @param instance: the instance which owns the device
5330 @type device: L{objects.Disk}
5331 @param device: the device to create
5332 @type force_create: boolean
5333 @param force_create: whether to force creation of this device; this
5334 will be change to True whenever we find a device which has
5335 CreateOnSecondary() attribute
5336 @param info: the extra 'metadata' we should attach to the device
5337 (this will be represented as a LVM tag)
5338 @type force_open: boolean
5339 @param force_open: this parameter will be passes to the
5340 L{backend.BlockdevCreate} function where it specifies
5341 whether we run on primary or not, and it affects both
5342 the child assembly and the device own Open() execution
5345 if device.CreateOnSecondary():
5349 for child in device.children:
5350 _CreateBlockDev(lu, node, instance, child, force_create,
5353 if not force_create:
5356 _CreateSingleBlockDev(lu, node, instance, device, info, force_open)
5359 def _CreateSingleBlockDev(lu, node, instance, device, info, force_open):
5360 """Create a single block device on a given node.
5362 This will not recurse over children of the device, so they must be
5365 @param lu: the lu on whose behalf we execute
5366 @param node: the node on which to create the device
5367 @type instance: L{objects.Instance}
5368 @param instance: the instance which owns the device
5369 @type device: L{objects.Disk}
5370 @param device: the device to create
5371 @param info: the extra 'metadata' we should attach to the device
5372 (this will be represented as a LVM tag)
5373 @type force_open: boolean
5374 @param force_open: this parameter will be passes to the
5375 L{backend.BlockdevCreate} function where it specifies
5376 whether we run on primary or not, and it affects both
5377 the child assembly and the device own Open() execution
5380 lu.cfg.SetDiskID(device, node)
5381 result = lu.rpc.call_blockdev_create(node, device, device.size,
5382 instance.name, force_open, info)
5383 result.Raise("Can't create block device %s on"
5384 " node %s for instance %s" % (device, node, instance.name))
5385 if device.physical_id is None:
5386 device.physical_id = result.payload
5389 def _GenerateUniqueNames(lu, exts):
5390 """Generate a suitable LV name.
5392 This will generate a logical volume name for the given instance.
5397 new_id = lu.cfg.GenerateUniqueID(lu.proc.GetECId())
5398 results.append("%s%s" % (new_id, val))
5402 def _GenerateDRBD8Branch(lu, primary, secondary, size, names, iv_name,
5404 """Generate a drbd8 device complete with its children.
5407 port = lu.cfg.AllocatePort()
5408 vgname = lu.cfg.GetVGName()
5409 shared_secret = lu.cfg.GenerateDRBDSecret(lu.proc.GetECId())
5410 dev_data = objects.Disk(dev_type=constants.LD_LV, size=size,
5411 logical_id=(vgname, names[0]))
5412 dev_meta = objects.Disk(dev_type=constants.LD_LV, size=128,
5413 logical_id=(vgname, names[1]))
5414 drbd_dev = objects.Disk(dev_type=constants.LD_DRBD8, size=size,
5415 logical_id=(primary, secondary, port,
5418 children=[dev_data, dev_meta],
5423 def _GenerateDiskTemplate(lu, template_name,
5424 instance_name, primary_node,
5425 secondary_nodes, disk_info,
5426 file_storage_dir, file_driver,
5428 """Generate the entire disk layout for a given template type.
5431 #TODO: compute space requirements
5433 vgname = lu.cfg.GetVGName()
5434 disk_count = len(disk_info)
5436 if template_name == constants.DT_DISKLESS:
5438 elif template_name == constants.DT_PLAIN:
5439 if len(secondary_nodes) != 0:
5440 raise errors.ProgrammerError("Wrong template configuration")
5442 names = _GenerateUniqueNames(lu, [".disk%d" % (base_index + i)
5443 for i in range(disk_count)])
5444 for idx, disk in enumerate(disk_info):
5445 disk_index = idx + base_index
5446 disk_dev = objects.Disk(dev_type=constants.LD_LV, size=disk["size"],
5447 logical_id=(vgname, names[idx]),
5448 iv_name="disk/%d" % disk_index,
5450 disks.append(disk_dev)
5451 elif template_name == constants.DT_DRBD8:
5452 if len(secondary_nodes) != 1:
5453 raise errors.ProgrammerError("Wrong template configuration")
5454 remote_node = secondary_nodes[0]
5455 minors = lu.cfg.AllocateDRBDMinor(
5456 [primary_node, remote_node] * len(disk_info), instance_name)
5459 for lv_prefix in _GenerateUniqueNames(lu, [".disk%d" % (base_index + i)
5460 for i in range(disk_count)]):
5461 names.append(lv_prefix + "_data")
5462 names.append(lv_prefix + "_meta")
5463 for idx, disk in enumerate(disk_info):
5464 disk_index = idx + base_index
5465 disk_dev = _GenerateDRBD8Branch(lu, primary_node, remote_node,
5466 disk["size"], names[idx*2:idx*2+2],
5467 "disk/%d" % disk_index,
5468 minors[idx*2], minors[idx*2+1])
5469 disk_dev.mode = disk["mode"]
5470 disks.append(disk_dev)
5471 elif template_name == constants.DT_FILE:
5472 if len(secondary_nodes) != 0:
5473 raise errors.ProgrammerError("Wrong template configuration")
5475 for idx, disk in enumerate(disk_info):
5476 disk_index = idx + base_index
5477 disk_dev = objects.Disk(dev_type=constants.LD_FILE, size=disk["size"],
5478 iv_name="disk/%d" % disk_index,
5479 logical_id=(file_driver,
5480 "%s/disk%d" % (file_storage_dir,
5483 disks.append(disk_dev)
5485 raise errors.ProgrammerError("Invalid disk template '%s'" % template_name)
5489 def _GetInstanceInfoText(instance):
5490 """Compute that text that should be added to the disk's metadata.
5493 return "originstname+%s" % instance.name
5496 def _CreateDisks(lu, instance, to_skip=None, target_node=None):
5497 """Create all disks for an instance.
5499 This abstracts away some work from AddInstance.
5501 @type lu: L{LogicalUnit}
5502 @param lu: the logical unit on whose behalf we execute
5503 @type instance: L{objects.Instance}
5504 @param instance: the instance whose disks we should create
5506 @param to_skip: list of indices to skip
5507 @type target_node: string
5508 @param target_node: if passed, overrides the target node for creation
5510 @return: the success of the creation
5513 info = _GetInstanceInfoText(instance)
5514 if target_node is None:
5515 pnode = instance.primary_node
5516 all_nodes = instance.all_nodes
5521 if instance.disk_template == constants.DT_FILE:
5522 file_storage_dir = os.path.dirname(instance.disks[0].logical_id[1])
5523 result = lu.rpc.call_file_storage_dir_create(pnode, file_storage_dir)
5525 result.Raise("Failed to create directory '%s' on"
5526 " node %s" % (file_storage_dir, pnode))
5528 # Note: this needs to be kept in sync with adding of disks in
5529 # LUSetInstanceParams
5530 for idx, device in enumerate(instance.disks):
5531 if to_skip and idx in to_skip:
5533 logging.info("Creating volume %s for instance %s",
5534 device.iv_name, instance.name)
5536 for node in all_nodes:
5537 f_create = node == pnode
5538 _CreateBlockDev(lu, node, instance, device, f_create, info, f_create)
5541 def _RemoveDisks(lu, instance, target_node=None):
5542 """Remove all disks for an instance.
5544 This abstracts away some work from `AddInstance()` and
5545 `RemoveInstance()`. Note that in case some of the devices couldn't
5546 be removed, the removal will continue with the other ones (compare
5547 with `_CreateDisks()`).
5549 @type lu: L{LogicalUnit}
5550 @param lu: the logical unit on whose behalf we execute
5551 @type instance: L{objects.Instance}
5552 @param instance: the instance whose disks we should remove
5553 @type target_node: string
5554 @param target_node: used to override the node on which to remove the disks
5556 @return: the success of the removal
5559 logging.info("Removing block devices for instance %s", instance.name)
5562 for device in instance.disks:
5564 edata = [(target_node, device)]
5566 edata = device.ComputeNodeTree(instance.primary_node)
5567 for node, disk in edata:
5568 lu.cfg.SetDiskID(disk, node)
5569 msg = lu.rpc.call_blockdev_remove(node, disk).fail_msg
5571 lu.LogWarning("Could not remove block device %s on node %s,"
5572 " continuing anyway: %s", device.iv_name, node, msg)
5575 if instance.disk_template == constants.DT_FILE:
5576 file_storage_dir = os.path.dirname(instance.disks[0].logical_id[1])
5580 tgt = instance.primary_node
5581 result = lu.rpc.call_file_storage_dir_remove(tgt, file_storage_dir)
5583 lu.LogWarning("Could not remove directory '%s' on node %s: %s",
5584 file_storage_dir, instance.primary_node, result.fail_msg)
5590 def _ComputeDiskSize(disk_template, disks):
5591 """Compute disk size requirements in the volume group
5594 # Required free disk space as a function of disk and swap space
5596 constants.DT_DISKLESS: None,
5597 constants.DT_PLAIN: sum(d["size"] for d in disks),
5598 # 128 MB are added for drbd metadata for each disk
5599 constants.DT_DRBD8: sum(d["size"] + 128 for d in disks),
5600 constants.DT_FILE: None,
5603 if disk_template not in req_size_dict:
5604 raise errors.ProgrammerError("Disk template '%s' size requirement"
5605 " is unknown" % disk_template)
5607 return req_size_dict[disk_template]
5610 def _CheckHVParams(lu, nodenames, hvname, hvparams):
5611 """Hypervisor parameter validation.
5613 This function abstract the hypervisor parameter validation to be
5614 used in both instance create and instance modify.
5616 @type lu: L{LogicalUnit}
5617 @param lu: the logical unit for which we check
5618 @type nodenames: list
5619 @param nodenames: the list of nodes on which we should check
5620 @type hvname: string
5621 @param hvname: the name of the hypervisor we should use
5622 @type hvparams: dict
5623 @param hvparams: the parameters which we need to check
5624 @raise errors.OpPrereqError: if the parameters are not valid
5627 hvinfo = lu.rpc.call_hypervisor_validate_params(nodenames,
5630 for node in nodenames:
5634 info.Raise("Hypervisor parameter validation failed on node %s" % node)
5637 class LUCreateInstance(LogicalUnit):
5638 """Create an instance.
5641 HPATH = "instance-add"
5642 HTYPE = constants.HTYPE_INSTANCE
5643 _OP_REQP = ["instance_name", "disks", "disk_template",
5645 "wait_for_sync", "ip_check", "nics",
5646 "hvparams", "beparams"]
5649 def CheckArguments(self):
5653 # do not require name_check to ease forward/backward compatibility
5655 if not hasattr(self.op, "name_check"):
5656 self.op.name_check = True
5657 if self.op.ip_check and not self.op.name_check:
5658 # TODO: make the ip check more flexible and not depend on the name check
5659 raise errors.OpPrereqError("Cannot do ip checks without a name check",
5662 def ExpandNames(self):
5663 """ExpandNames for CreateInstance.
5665 Figure out the right locks for instance creation.
5668 self.needed_locks = {}
5670 # set optional parameters to none if they don't exist
5671 for attr in ["pnode", "snode", "iallocator", "hypervisor"]:
5672 if not hasattr(self.op, attr):
5673 setattr(self.op, attr, None)
5675 # cheap checks, mostly valid constants given
5677 # verify creation mode
5678 if self.op.mode not in (constants.INSTANCE_CREATE,
5679 constants.INSTANCE_IMPORT):
5680 raise errors.OpPrereqError("Invalid instance creation mode '%s'" %
5681 self.op.mode, errors.ECODE_INVAL)
5683 # disk template and mirror node verification
5684 if self.op.disk_template not in constants.DISK_TEMPLATES:
5685 raise errors.OpPrereqError("Invalid disk template name",
5688 if self.op.hypervisor is None:
5689 self.op.hypervisor = self.cfg.GetHypervisorType()
5691 cluster = self.cfg.GetClusterInfo()
5692 enabled_hvs = cluster.enabled_hypervisors
5693 if self.op.hypervisor not in enabled_hvs:
5694 raise errors.OpPrereqError("Selected hypervisor (%s) not enabled in the"
5695 " cluster (%s)" % (self.op.hypervisor,
5696 ",".join(enabled_hvs)),
5699 # check hypervisor parameter syntax (locally)
5700 utils.ForceDictType(self.op.hvparams, constants.HVS_PARAMETER_TYPES)
5701 filled_hvp = objects.FillDict(cluster.hvparams[self.op.hypervisor],
5703 hv_type = hypervisor.GetHypervisor(self.op.hypervisor)
5704 hv_type.CheckParameterSyntax(filled_hvp)
5705 self.hv_full = filled_hvp
5706 # check that we don't specify global parameters on an instance
5707 _CheckGlobalHvParams(self.op.hvparams)
5709 # fill and remember the beparams dict
5710 utils.ForceDictType(self.op.beparams, constants.BES_PARAMETER_TYPES)
5711 self.be_full = objects.FillDict(cluster.beparams[constants.PP_DEFAULT],
5714 #### instance parameters check
5716 # instance name verification
5717 if self.op.name_check:
5718 hostname1 = utils.GetHostInfo(self.op.instance_name)
5719 self.op.instance_name = instance_name = hostname1.name
5720 # used in CheckPrereq for ip ping check
5721 self.check_ip = hostname1.ip
5723 instance_name = self.op.instance_name
5724 self.check_ip = None
5726 # this is just a preventive check, but someone might still add this
5727 # instance in the meantime, and creation will fail at lock-add time
5728 if instance_name in self.cfg.GetInstanceList():
5729 raise errors.OpPrereqError("Instance '%s' is already in the cluster" %
5730 instance_name, errors.ECODE_EXISTS)
5732 self.add_locks[locking.LEVEL_INSTANCE] = instance_name
5736 for idx, nic in enumerate(self.op.nics):
5737 nic_mode_req = nic.get("mode", None)
5738 nic_mode = nic_mode_req
5739 if nic_mode is None:
5740 nic_mode = cluster.nicparams[constants.PP_DEFAULT][constants.NIC_MODE]
5742 # in routed mode, for the first nic, the default ip is 'auto'
5743 if nic_mode == constants.NIC_MODE_ROUTED and idx == 0:
5744 default_ip_mode = constants.VALUE_AUTO
5746 default_ip_mode = constants.VALUE_NONE
5748 # ip validity checks
5749 ip = nic.get("ip", default_ip_mode)
5750 if ip is None or ip.lower() == constants.VALUE_NONE:
5752 elif ip.lower() == constants.VALUE_AUTO:
5753 if not self.op.name_check:
5754 raise errors.OpPrereqError("IP address set to auto but name checks"
5755 " have been skipped. Aborting.",
5757 nic_ip = hostname1.ip
5759 if not utils.IsValidIP(ip):
5760 raise errors.OpPrereqError("Given IP address '%s' doesn't look"
5761 " like a valid IP" % ip,
5765 # TODO: check the ip address for uniqueness
5766 if nic_mode == constants.NIC_MODE_ROUTED and not nic_ip:
5767 raise errors.OpPrereqError("Routed nic mode requires an ip address",
5770 # MAC address verification
5771 mac = nic.get("mac", constants.VALUE_AUTO)
5772 if mac not in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
5773 mac = utils.NormalizeAndValidateMac(mac)
5776 self.cfg.ReserveMAC(mac, self.proc.GetECId())
5777 except errors.ReservationError:
5778 raise errors.OpPrereqError("MAC address %s already in use"
5779 " in cluster" % mac,
5780 errors.ECODE_NOTUNIQUE)
5782 # bridge verification
5783 bridge = nic.get("bridge", None)
5784 link = nic.get("link", None)
5786 raise errors.OpPrereqError("Cannot pass 'bridge' and 'link'"
5787 " at the same time", errors.ECODE_INVAL)
5788 elif bridge and nic_mode == constants.NIC_MODE_ROUTED:
5789 raise errors.OpPrereqError("Cannot pass 'bridge' on a routed nic",
5796 nicparams[constants.NIC_MODE] = nic_mode_req
5798 nicparams[constants.NIC_LINK] = link
5800 check_params = objects.FillDict(cluster.nicparams[constants.PP_DEFAULT],
5802 objects.NIC.CheckParameterSyntax(check_params)
5803 self.nics.append(objects.NIC(mac=mac, ip=nic_ip, nicparams=nicparams))
5805 # disk checks/pre-build
5807 for disk in self.op.disks:
5808 mode = disk.get("mode", constants.DISK_RDWR)
5809 if mode not in constants.DISK_ACCESS_SET:
5810 raise errors.OpPrereqError("Invalid disk access mode '%s'" %
5811 mode, errors.ECODE_INVAL)
5812 size = disk.get("size", None)
5814 raise errors.OpPrereqError("Missing disk size", errors.ECODE_INVAL)
5817 except (TypeError, ValueError):
5818 raise errors.OpPrereqError("Invalid disk size '%s'" % size,
5820 self.disks.append({"size": size, "mode": mode})
5822 # file storage checks
5823 if (self.op.file_driver and
5824 not self.op.file_driver in constants.FILE_DRIVER):
5825 raise errors.OpPrereqError("Invalid file driver name '%s'" %
5826 self.op.file_driver, errors.ECODE_INVAL)
5828 if self.op.file_storage_dir and os.path.isabs(self.op.file_storage_dir):
5829 raise errors.OpPrereqError("File storage directory path not absolute",
5832 ### Node/iallocator related checks
5833 if [self.op.iallocator, self.op.pnode].count(None) != 1:
5834 raise errors.OpPrereqError("One and only one of iallocator and primary"
5835 " node must be given",
5838 if self.op.iallocator:
5839 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
5841 self.op.pnode = _ExpandNodeName(self.cfg, self.op.pnode)
5842 nodelist = [self.op.pnode]
5843 if self.op.snode is not None:
5844 self.op.snode = _ExpandNodeName(self.cfg, self.op.snode)
5845 nodelist.append(self.op.snode)
5846 self.needed_locks[locking.LEVEL_NODE] = nodelist
5848 # in case of import lock the source node too
5849 if self.op.mode == constants.INSTANCE_IMPORT:
5850 src_node = getattr(self.op, "src_node", None)
5851 src_path = getattr(self.op, "src_path", None)
5853 if src_path is None:
5854 self.op.src_path = src_path = self.op.instance_name
5856 if src_node is None:
5857 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
5858 self.op.src_node = None
5859 if os.path.isabs(src_path):
5860 raise errors.OpPrereqError("Importing an instance from an absolute"
5861 " path requires a source node option.",
5864 self.op.src_node = src_node = _ExpandNodeName(self.cfg, src_node)
5865 if self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET:
5866 self.needed_locks[locking.LEVEL_NODE].append(src_node)
5867 if not os.path.isabs(src_path):
5868 self.op.src_path = src_path = \
5869 utils.PathJoin(constants.EXPORT_DIR, src_path)
5871 # On import force_variant must be True, because if we forced it at
5872 # initial install, our only chance when importing it back is that it
5874 self.op.force_variant = True
5876 else: # INSTANCE_CREATE
5877 if getattr(self.op, "os_type", None) is None:
5878 raise errors.OpPrereqError("No guest OS specified",
5880 self.op.force_variant = getattr(self.op, "force_variant", False)
5882 def _RunAllocator(self):
5883 """Run the allocator based on input opcode.
5886 nics = [n.ToDict() for n in self.nics]
5887 ial = IAllocator(self.cfg, self.rpc,
5888 mode=constants.IALLOCATOR_MODE_ALLOC,
5889 name=self.op.instance_name,
5890 disk_template=self.op.disk_template,
5893 vcpus=self.be_full[constants.BE_VCPUS],
5894 mem_size=self.be_full[constants.BE_MEMORY],
5897 hypervisor=self.op.hypervisor,
5900 ial.Run(self.op.iallocator)
5903 raise errors.OpPrereqError("Can't compute nodes using"
5904 " iallocator '%s': %s" %
5905 (self.op.iallocator, ial.info),
5907 if len(ial.result) != ial.required_nodes:
5908 raise errors.OpPrereqError("iallocator '%s' returned invalid number"
5909 " of nodes (%s), required %s" %
5910 (self.op.iallocator, len(ial.result),
5911 ial.required_nodes), errors.ECODE_FAULT)
5912 self.op.pnode = ial.result[0]
5913 self.LogInfo("Selected nodes for instance %s via iallocator %s: %s",
5914 self.op.instance_name, self.op.iallocator,
5915 utils.CommaJoin(ial.result))
5916 if ial.required_nodes == 2:
5917 self.op.snode = ial.result[1]
5919 def BuildHooksEnv(self):
5922 This runs on master, primary and secondary nodes of the instance.
5926 "ADD_MODE": self.op.mode,
5928 if self.op.mode == constants.INSTANCE_IMPORT:
5929 env["SRC_NODE"] = self.op.src_node
5930 env["SRC_PATH"] = self.op.src_path
5931 env["SRC_IMAGES"] = self.src_images
5933 env.update(_BuildInstanceHookEnv(
5934 name=self.op.instance_name,
5935 primary_node=self.op.pnode,
5936 secondary_nodes=self.secondaries,
5937 status=self.op.start,
5938 os_type=self.op.os_type,
5939 memory=self.be_full[constants.BE_MEMORY],
5940 vcpus=self.be_full[constants.BE_VCPUS],
5941 nics=_NICListToTuple(self, self.nics),
5942 disk_template=self.op.disk_template,
5943 disks=[(d["size"], d["mode"]) for d in self.disks],
5946 hypervisor_name=self.op.hypervisor,
5949 nl = ([self.cfg.GetMasterNode(), self.op.pnode] +
5954 def CheckPrereq(self):
5955 """Check prerequisites.
5958 if (not self.cfg.GetVGName() and
5959 self.op.disk_template not in constants.DTS_NOT_LVM):
5960 raise errors.OpPrereqError("Cluster does not support lvm-based"
5961 " instances", errors.ECODE_STATE)
5963 if self.op.mode == constants.INSTANCE_IMPORT:
5964 src_node = self.op.src_node
5965 src_path = self.op.src_path
5967 if src_node is None:
5968 locked_nodes = self.acquired_locks[locking.LEVEL_NODE]
5969 exp_list = self.rpc.call_export_list(locked_nodes)
5971 for node in exp_list:
5972 if exp_list[node].fail_msg:
5974 if src_path in exp_list[node].payload:
5976 self.op.src_node = src_node = node
5977 self.op.src_path = src_path = utils.PathJoin(constants.EXPORT_DIR,
5981 raise errors.OpPrereqError("No export found for relative path %s" %
5982 src_path, errors.ECODE_INVAL)
5984 _CheckNodeOnline(self, src_node)
5985 result = self.rpc.call_export_info(src_node, src_path)
5986 result.Raise("No export or invalid export found in dir %s" % src_path)
5988 export_info = objects.SerializableConfigParser.Loads(str(result.payload))
5989 if not export_info.has_section(constants.INISECT_EXP):
5990 raise errors.ProgrammerError("Corrupted export config",
5991 errors.ECODE_ENVIRON)
5993 ei_version = export_info.get(constants.INISECT_EXP, 'version')
5994 if (int(ei_version) != constants.EXPORT_VERSION):
5995 raise errors.OpPrereqError("Wrong export version %s (wanted %d)" %
5996 (ei_version, constants.EXPORT_VERSION),
5997 errors.ECODE_ENVIRON)
5999 # Check that the new instance doesn't have less disks than the export
6000 instance_disks = len(self.disks)
6001 export_disks = export_info.getint(constants.INISECT_INS, 'disk_count')
6002 if instance_disks < export_disks:
6003 raise errors.OpPrereqError("Not enough disks to import."
6004 " (instance: %d, export: %d)" %
6005 (instance_disks, export_disks),
6008 self.op.os_type = export_info.get(constants.INISECT_EXP, 'os')
6010 for idx in range(export_disks):
6011 option = 'disk%d_dump' % idx
6012 if export_info.has_option(constants.INISECT_INS, option):
6013 # FIXME: are the old os-es, disk sizes, etc. useful?
6014 export_name = export_info.get(constants.INISECT_INS, option)
6015 image = utils.PathJoin(src_path, export_name)
6016 disk_images.append(image)
6018 disk_images.append(False)
6020 self.src_images = disk_images
6022 old_name = export_info.get(constants.INISECT_INS, 'name')
6023 # FIXME: int() here could throw a ValueError on broken exports
6024 exp_nic_count = int(export_info.get(constants.INISECT_INS, 'nic_count'))
6025 if self.op.instance_name == old_name:
6026 for idx, nic in enumerate(self.nics):
6027 if nic.mac == constants.VALUE_AUTO and exp_nic_count >= idx:
6028 nic_mac_ini = 'nic%d_mac' % idx
6029 nic.mac = export_info.get(constants.INISECT_INS, nic_mac_ini)
6031 # ENDIF: self.op.mode == constants.INSTANCE_IMPORT
6033 # ip ping checks (we use the same ip that was resolved in ExpandNames)
6034 if self.op.ip_check:
6035 if utils.TcpPing(self.check_ip, constants.DEFAULT_NODED_PORT):
6036 raise errors.OpPrereqError("IP %s of instance %s already in use" %
6037 (self.check_ip, self.op.instance_name),
6038 errors.ECODE_NOTUNIQUE)
6040 #### mac address generation
6041 # By generating here the mac address both the allocator and the hooks get
6042 # the real final mac address rather than the 'auto' or 'generate' value.
6043 # There is a race condition between the generation and the instance object
6044 # creation, which means that we know the mac is valid now, but we're not
6045 # sure it will be when we actually add the instance. If things go bad
6046 # adding the instance will abort because of a duplicate mac, and the
6047 # creation job will fail.
6048 for nic in self.nics:
6049 if nic.mac in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
6050 nic.mac = self.cfg.GenerateMAC(self.proc.GetECId())
6054 if self.op.iallocator is not None:
6055 self._RunAllocator()
6057 #### node related checks
6059 # check primary node
6060 self.pnode = pnode = self.cfg.GetNodeInfo(self.op.pnode)
6061 assert self.pnode is not None, \
6062 "Cannot retrieve locked node %s" % self.op.pnode
6064 raise errors.OpPrereqError("Cannot use offline primary node '%s'" %
6065 pnode.name, errors.ECODE_STATE)
6067 raise errors.OpPrereqError("Cannot use drained primary node '%s'" %
6068 pnode.name, errors.ECODE_STATE)
6070 self.secondaries = []
6072 # mirror node verification
6073 if self.op.disk_template in constants.DTS_NET_MIRROR:
6074 if self.op.snode is None:
6075 raise errors.OpPrereqError("The networked disk templates need"
6076 " a mirror node", errors.ECODE_INVAL)
6077 if self.op.snode == pnode.name:
6078 raise errors.OpPrereqError("The secondary node cannot be the"
6079 " primary node.", errors.ECODE_INVAL)
6080 _CheckNodeOnline(self, self.op.snode)
6081 _CheckNodeNotDrained(self, self.op.snode)
6082 self.secondaries.append(self.op.snode)
6084 nodenames = [pnode.name] + self.secondaries
6086 req_size = _ComputeDiskSize(self.op.disk_template,
6089 # Check lv size requirements
6090 if req_size is not None:
6091 nodeinfo = self.rpc.call_node_info(nodenames, self.cfg.GetVGName(),
6093 for node in nodenames:
6094 info = nodeinfo[node]
6095 info.Raise("Cannot get current information from node %s" % node)
6097 vg_free = info.get('vg_free', None)
6098 if not isinstance(vg_free, int):
6099 raise errors.OpPrereqError("Can't compute free disk space on"
6100 " node %s" % node, errors.ECODE_ENVIRON)
6101 if req_size > vg_free:
6102 raise errors.OpPrereqError("Not enough disk space on target node %s."
6103 " %d MB available, %d MB required" %
6104 (node, vg_free, req_size),
6107 _CheckHVParams(self, nodenames, self.op.hypervisor, self.op.hvparams)
6110 result = self.rpc.call_os_get(pnode.name, self.op.os_type)
6111 result.Raise("OS '%s' not in supported os list for primary node %s" %
6112 (self.op.os_type, pnode.name),
6113 prereq=True, ecode=errors.ECODE_INVAL)
6114 if not self.op.force_variant:
6115 _CheckOSVariant(result.payload, self.op.os_type)
6117 _CheckNicsBridgesExist(self, self.nics, self.pnode.name)
6119 # memory check on primary node
6121 _CheckNodeFreeMemory(self, self.pnode.name,
6122 "creating instance %s" % self.op.instance_name,
6123 self.be_full[constants.BE_MEMORY],
6126 self.dry_run_result = list(nodenames)
6128 def Exec(self, feedback_fn):
6129 """Create and add the instance to the cluster.
6132 instance = self.op.instance_name
6133 pnode_name = self.pnode.name
6135 ht_kind = self.op.hypervisor
6136 if ht_kind in constants.HTS_REQ_PORT:
6137 network_port = self.cfg.AllocatePort()
6141 ##if self.op.vnc_bind_address is None:
6142 ## self.op.vnc_bind_address = constants.VNC_DEFAULT_BIND_ADDRESS
6144 # this is needed because os.path.join does not accept None arguments
6145 if self.op.file_storage_dir is None:
6146 string_file_storage_dir = ""
6148 string_file_storage_dir = self.op.file_storage_dir
6150 # build the full file storage dir path
6151 file_storage_dir = utils.PathJoin(self.cfg.GetFileStorageDir(),
6152 string_file_storage_dir, instance)
6155 disks = _GenerateDiskTemplate(self,
6156 self.op.disk_template,
6157 instance, pnode_name,
6161 self.op.file_driver,
6164 iobj = objects.Instance(name=instance, os=self.op.os_type,
6165 primary_node=pnode_name,
6166 nics=self.nics, disks=disks,
6167 disk_template=self.op.disk_template,
6169 network_port=network_port,
6170 beparams=self.op.beparams,
6171 hvparams=self.op.hvparams,
6172 hypervisor=self.op.hypervisor,
6175 feedback_fn("* creating instance disks...")
6177 _CreateDisks(self, iobj)
6178 except errors.OpExecError:
6179 self.LogWarning("Device creation failed, reverting...")
6181 _RemoveDisks(self, iobj)
6183 self.cfg.ReleaseDRBDMinors(instance)
6186 feedback_fn("adding instance %s to cluster config" % instance)
6188 self.cfg.AddInstance(iobj, self.proc.GetECId())
6190 # Declare that we don't want to remove the instance lock anymore, as we've
6191 # added the instance to the config
6192 del self.remove_locks[locking.LEVEL_INSTANCE]
6193 # Unlock all the nodes
6194 if self.op.mode == constants.INSTANCE_IMPORT:
6195 nodes_keep = [self.op.src_node]
6196 nodes_release = [node for node in self.acquired_locks[locking.LEVEL_NODE]
6197 if node != self.op.src_node]
6198 self.context.glm.release(locking.LEVEL_NODE, nodes_release)
6199 self.acquired_locks[locking.LEVEL_NODE] = nodes_keep
6201 self.context.glm.release(locking.LEVEL_NODE)
6202 del self.acquired_locks[locking.LEVEL_NODE]
6204 if self.op.wait_for_sync:
6205 disk_abort = not _WaitForSync(self, iobj)
6206 elif iobj.disk_template in constants.DTS_NET_MIRROR:
6207 # make sure the disks are not degraded (still sync-ing is ok)
6209 feedback_fn("* checking mirrors status")
6210 disk_abort = not _WaitForSync(self, iobj, oneshot=True)
6215 _RemoveDisks(self, iobj)
6216 self.cfg.RemoveInstance(iobj.name)
6217 # Make sure the instance lock gets removed
6218 self.remove_locks[locking.LEVEL_INSTANCE] = iobj.name
6219 raise errors.OpExecError("There are some degraded disks for"
6222 feedback_fn("creating os for instance %s on node %s" %
6223 (instance, pnode_name))
6225 if iobj.disk_template != constants.DT_DISKLESS:
6226 if self.op.mode == constants.INSTANCE_CREATE:
6227 feedback_fn("* running the instance OS create scripts...")
6228 # FIXME: pass debug option from opcode to backend
6229 result = self.rpc.call_instance_os_add(pnode_name, iobj, False,
6230 self.op.debug_level)
6231 result.Raise("Could not add os for instance %s"
6232 " on node %s" % (instance, pnode_name))
6234 elif self.op.mode == constants.INSTANCE_IMPORT:
6235 feedback_fn("* running the instance OS import scripts...")
6236 src_node = self.op.src_node
6237 src_images = self.src_images
6238 cluster_name = self.cfg.GetClusterName()
6239 # FIXME: pass debug option from opcode to backend
6240 import_result = self.rpc.call_instance_os_import(pnode_name, iobj,
6241 src_node, src_images,
6243 self.op.debug_level)
6244 msg = import_result.fail_msg
6246 self.LogWarning("Error while importing the disk images for instance"
6247 " %s on node %s: %s" % (instance, pnode_name, msg))
6249 # also checked in the prereq part
6250 raise errors.ProgrammerError("Unknown OS initialization mode '%s'"
6254 iobj.admin_up = True
6255 self.cfg.Update(iobj, feedback_fn)
6256 logging.info("Starting instance %s on node %s", instance, pnode_name)
6257 feedback_fn("* starting instance...")
6258 result = self.rpc.call_instance_start(pnode_name, iobj, None, None)
6259 result.Raise("Could not start instance")
6261 return list(iobj.all_nodes)
6264 class LUConnectConsole(NoHooksLU):
6265 """Connect to an instance's console.
6267 This is somewhat special in that it returns the command line that
6268 you need to run on the master node in order to connect to the
6272 _OP_REQP = ["instance_name"]
6275 def ExpandNames(self):
6276 self._ExpandAndLockInstance()
6278 def CheckPrereq(self):
6279 """Check prerequisites.
6281 This checks that the instance is in the cluster.
6284 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
6285 assert self.instance is not None, \
6286 "Cannot retrieve locked instance %s" % self.op.instance_name
6287 _CheckNodeOnline(self, self.instance.primary_node)
6289 def Exec(self, feedback_fn):
6290 """Connect to the console of an instance
6293 instance = self.instance
6294 node = instance.primary_node
6296 node_insts = self.rpc.call_instance_list([node],
6297 [instance.hypervisor])[node]
6298 node_insts.Raise("Can't get node information from %s" % node)
6300 if instance.name not in node_insts.payload:
6301 raise errors.OpExecError("Instance %s is not running." % instance.name)
6303 logging.debug("Connecting to console of %s on %s", instance.name, node)
6305 hyper = hypervisor.GetHypervisor(instance.hypervisor)
6306 cluster = self.cfg.GetClusterInfo()
6307 # beparams and hvparams are passed separately, to avoid editing the
6308 # instance and then saving the defaults in the instance itself.
6309 hvparams = cluster.FillHV(instance)
6310 beparams = cluster.FillBE(instance)
6311 console_cmd = hyper.GetShellCommandForConsole(instance, hvparams, beparams)
6314 return self.ssh.BuildCmd(node, "root", console_cmd, batch=True, tty=True)
6317 class LUReplaceDisks(LogicalUnit):
6318 """Replace the disks of an instance.
6321 HPATH = "mirrors-replace"
6322 HTYPE = constants.HTYPE_INSTANCE
6323 _OP_REQP = ["instance_name", "mode", "disks"]
6326 def CheckArguments(self):
6327 if not hasattr(self.op, "remote_node"):
6328 self.op.remote_node = None
6329 if not hasattr(self.op, "iallocator"):
6330 self.op.iallocator = None
6331 if not hasattr(self.op, "early_release"):
6332 self.op.early_release = False
6334 TLReplaceDisks.CheckArguments(self.op.mode, self.op.remote_node,
6337 def ExpandNames(self):
6338 self._ExpandAndLockInstance()
6340 if self.op.iallocator is not None:
6341 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
6343 elif self.op.remote_node is not None:
6344 remote_node = _ExpandNodeName(self.cfg, self.op.remote_node)
6345 self.op.remote_node = remote_node
6347 # Warning: do not remove the locking of the new secondary here
6348 # unless DRBD8.AddChildren is changed to work in parallel;
6349 # currently it doesn't since parallel invocations of
6350 # FindUnusedMinor will conflict
6351 self.needed_locks[locking.LEVEL_NODE] = [remote_node]
6352 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_APPEND
6355 self.needed_locks[locking.LEVEL_NODE] = []
6356 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
6358 self.replacer = TLReplaceDisks(self, self.op.instance_name, self.op.mode,
6359 self.op.iallocator, self.op.remote_node,
6360 self.op.disks, False, self.op.early_release)
6362 self.tasklets = [self.replacer]
6364 def DeclareLocks(self, level):
6365 # If we're not already locking all nodes in the set we have to declare the
6366 # instance's primary/secondary nodes.
6367 if (level == locking.LEVEL_NODE and
6368 self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET):
6369 self._LockInstancesNodes()
6371 def BuildHooksEnv(self):
6374 This runs on the master, the primary and all the secondaries.
6377 instance = self.replacer.instance
6379 "MODE": self.op.mode,
6380 "NEW_SECONDARY": self.op.remote_node,
6381 "OLD_SECONDARY": instance.secondary_nodes[0],
6383 env.update(_BuildInstanceHookEnvByObject(self, instance))
6385 self.cfg.GetMasterNode(),
6386 instance.primary_node,
6388 if self.op.remote_node is not None:
6389 nl.append(self.op.remote_node)
6393 class LUEvacuateNode(LogicalUnit):
6394 """Relocate the secondary instances from a node.
6397 HPATH = "node-evacuate"
6398 HTYPE = constants.HTYPE_NODE
6399 _OP_REQP = ["node_name"]
6402 def CheckArguments(self):
6403 if not hasattr(self.op, "remote_node"):
6404 self.op.remote_node = None
6405 if not hasattr(self.op, "iallocator"):
6406 self.op.iallocator = None
6407 if not hasattr(self.op, "early_release"):
6408 self.op.early_release = False
6410 TLReplaceDisks.CheckArguments(constants.REPLACE_DISK_CHG,
6411 self.op.remote_node,
6414 def ExpandNames(self):
6415 self.op.node_name = _ExpandNodeName(self.cfg, self.op.node_name)
6417 self.needed_locks = {}
6419 # Declare node locks
6420 if self.op.iallocator is not None:
6421 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
6423 elif self.op.remote_node is not None:
6424 self.op.remote_node = _ExpandNodeName(self.cfg, self.op.remote_node)
6426 # Warning: do not remove the locking of the new secondary here
6427 # unless DRBD8.AddChildren is changed to work in parallel;
6428 # currently it doesn't since parallel invocations of
6429 # FindUnusedMinor will conflict
6430 self.needed_locks[locking.LEVEL_NODE] = [self.op.remote_node]
6431 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_APPEND
6434 raise errors.OpPrereqError("Invalid parameters", errors.ECODE_INVAL)
6436 # Create tasklets for replacing disks for all secondary instances on this
6441 for inst in _GetNodeSecondaryInstances(self.cfg, self.op.node_name):
6442 logging.debug("Replacing disks for instance %s", inst.name)
6443 names.append(inst.name)
6445 replacer = TLReplaceDisks(self, inst.name, constants.REPLACE_DISK_CHG,
6446 self.op.iallocator, self.op.remote_node, [],
6447 True, self.op.early_release)
6448 tasklets.append(replacer)
6450 self.tasklets = tasklets
6451 self.instance_names = names
6453 # Declare instance locks
6454 self.needed_locks[locking.LEVEL_INSTANCE] = self.instance_names
6456 def DeclareLocks(self, level):
6457 # If we're not already locking all nodes in the set we have to declare the
6458 # instance's primary/secondary nodes.
6459 if (level == locking.LEVEL_NODE and
6460 self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET):
6461 self._LockInstancesNodes()
6463 def BuildHooksEnv(self):
6466 This runs on the master, the primary and all the secondaries.
6470 "NODE_NAME": self.op.node_name,
6473 nl = [self.cfg.GetMasterNode()]
6475 if self.op.remote_node is not None:
6476 env["NEW_SECONDARY"] = self.op.remote_node
6477 nl.append(self.op.remote_node)
6479 return (env, nl, nl)
6482 class TLReplaceDisks(Tasklet):
6483 """Replaces disks for an instance.
6485 Note: Locking is not within the scope of this class.
6488 def __init__(self, lu, instance_name, mode, iallocator_name, remote_node,
6489 disks, delay_iallocator, early_release):
6490 """Initializes this class.
6493 Tasklet.__init__(self, lu)
6496 self.instance_name = instance_name
6498 self.iallocator_name = iallocator_name
6499 self.remote_node = remote_node
6501 self.delay_iallocator = delay_iallocator
6502 self.early_release = early_release
6505 self.instance = None
6506 self.new_node = None
6507 self.target_node = None
6508 self.other_node = None
6509 self.remote_node_info = None
6510 self.node_secondary_ip = None
6513 def CheckArguments(mode, remote_node, iallocator):
6514 """Helper function for users of this class.
6517 # check for valid parameter combination
6518 if mode == constants.REPLACE_DISK_CHG:
6519 if remote_node is None and iallocator is None:
6520 raise errors.OpPrereqError("When changing the secondary either an"
6521 " iallocator script must be used or the"
6522 " new node given", errors.ECODE_INVAL)
6524 if remote_node is not None and iallocator is not None:
6525 raise errors.OpPrereqError("Give either the iallocator or the new"
6526 " secondary, not both", errors.ECODE_INVAL)
6528 elif remote_node is not None or iallocator is not None:
6529 # Not replacing the secondary
6530 raise errors.OpPrereqError("The iallocator and new node options can"
6531 " only be used when changing the"
6532 " secondary node", errors.ECODE_INVAL)
6535 def _RunAllocator(lu, iallocator_name, instance_name, relocate_from):
6536 """Compute a new secondary node using an IAllocator.
6539 ial = IAllocator(lu.cfg, lu.rpc,
6540 mode=constants.IALLOCATOR_MODE_RELOC,
6542 relocate_from=relocate_from)
6544 ial.Run(iallocator_name)
6547 raise errors.OpPrereqError("Can't compute nodes using iallocator '%s':"
6548 " %s" % (iallocator_name, ial.info),
6551 if len(ial.result) != ial.required_nodes:
6552 raise errors.OpPrereqError("iallocator '%s' returned invalid number"
6553 " of nodes (%s), required %s" %
6555 len(ial.result), ial.required_nodes),
6558 remote_node_name = ial.result[0]
6560 lu.LogInfo("Selected new secondary for instance '%s': %s",
6561 instance_name, remote_node_name)
6563 return remote_node_name
6565 def _FindFaultyDisks(self, node_name):
6566 return _FindFaultyInstanceDisks(self.cfg, self.rpc, self.instance,
6569 def CheckPrereq(self):
6570 """Check prerequisites.
6572 This checks that the instance is in the cluster.
6575 self.instance = instance = self.cfg.GetInstanceInfo(self.instance_name)
6576 assert instance is not None, \
6577 "Cannot retrieve locked instance %s" % self.instance_name
6579 if instance.disk_template != constants.DT_DRBD8:
6580 raise errors.OpPrereqError("Can only run replace disks for DRBD8-based"
6581 " instances", errors.ECODE_INVAL)
6583 if len(instance.secondary_nodes) != 1:
6584 raise errors.OpPrereqError("The instance has a strange layout,"
6585 " expected one secondary but found %d" %
6586 len(instance.secondary_nodes),
6589 if not self.delay_iallocator:
6590 self._CheckPrereq2()
6592 def _CheckPrereq2(self):
6593 """Check prerequisites, second part.
6595 This function should always be part of CheckPrereq. It was separated and is
6596 now called from Exec because during node evacuation iallocator was only
6597 called with an unmodified cluster model, not taking planned changes into
6601 instance = self.instance
6602 secondary_node = instance.secondary_nodes[0]
6604 if self.iallocator_name is None:
6605 remote_node = self.remote_node
6607 remote_node = self._RunAllocator(self.lu, self.iallocator_name,
6608 instance.name, instance.secondary_nodes)
6610 if remote_node is not None:
6611 self.remote_node_info = self.cfg.GetNodeInfo(remote_node)
6612 assert self.remote_node_info is not None, \
6613 "Cannot retrieve locked node %s" % remote_node
6615 self.remote_node_info = None
6617 if remote_node == self.instance.primary_node:
6618 raise errors.OpPrereqError("The specified node is the primary node of"
6619 " the instance.", errors.ECODE_INVAL)
6621 if remote_node == secondary_node:
6622 raise errors.OpPrereqError("The specified node is already the"
6623 " secondary node of the instance.",
6626 if self.disks and self.mode in (constants.REPLACE_DISK_AUTO,
6627 constants.REPLACE_DISK_CHG):
6628 raise errors.OpPrereqError("Cannot specify disks to be replaced",
6631 if self.mode == constants.REPLACE_DISK_AUTO:
6632 faulty_primary = self._FindFaultyDisks(instance.primary_node)
6633 faulty_secondary = self._FindFaultyDisks(secondary_node)
6635 if faulty_primary and faulty_secondary:
6636 raise errors.OpPrereqError("Instance %s has faulty disks on more than"
6637 " one node and can not be repaired"
6638 " automatically" % self.instance_name,
6642 self.disks = faulty_primary
6643 self.target_node = instance.primary_node
6644 self.other_node = secondary_node
6645 check_nodes = [self.target_node, self.other_node]
6646 elif faulty_secondary:
6647 self.disks = faulty_secondary
6648 self.target_node = secondary_node
6649 self.other_node = instance.primary_node
6650 check_nodes = [self.target_node, self.other_node]
6656 # Non-automatic modes
6657 if self.mode == constants.REPLACE_DISK_PRI:
6658 self.target_node = instance.primary_node
6659 self.other_node = secondary_node
6660 check_nodes = [self.target_node, self.other_node]
6662 elif self.mode == constants.REPLACE_DISK_SEC:
6663 self.target_node = secondary_node
6664 self.other_node = instance.primary_node
6665 check_nodes = [self.target_node, self.other_node]
6667 elif self.mode == constants.REPLACE_DISK_CHG:
6668 self.new_node = remote_node
6669 self.other_node = instance.primary_node
6670 self.target_node = secondary_node
6671 check_nodes = [self.new_node, self.other_node]
6673 _CheckNodeNotDrained(self.lu, remote_node)
6675 old_node_info = self.cfg.GetNodeInfo(secondary_node)
6676 assert old_node_info is not None
6677 if old_node_info.offline and not self.early_release:
6678 # doesn't make sense to delay the release
6679 self.early_release = True
6680 self.lu.LogInfo("Old secondary %s is offline, automatically enabling"
6681 " early-release mode", secondary_node)
6684 raise errors.ProgrammerError("Unhandled disk replace mode (%s)" %
6687 # If not specified all disks should be replaced
6689 self.disks = range(len(self.instance.disks))
6691 for node in check_nodes:
6692 _CheckNodeOnline(self.lu, node)
6694 # Check whether disks are valid
6695 for disk_idx in self.disks:
6696 instance.FindDisk(disk_idx)
6698 # Get secondary node IP addresses
6701 for node_name in [self.target_node, self.other_node, self.new_node]:
6702 if node_name is not None:
6703 node_2nd_ip[node_name] = self.cfg.GetNodeInfo(node_name).secondary_ip
6705 self.node_secondary_ip = node_2nd_ip
6707 def Exec(self, feedback_fn):
6708 """Execute disk replacement.
6710 This dispatches the disk replacement to the appropriate handler.
6713 if self.delay_iallocator:
6714 self._CheckPrereq2()
6717 feedback_fn("No disks need replacement")
6720 feedback_fn("Replacing disk(s) %s for %s" %
6721 (utils.CommaJoin(self.disks), self.instance.name))
6723 activate_disks = (not self.instance.admin_up)
6725 # Activate the instance disks if we're replacing them on a down instance
6727 _StartInstanceDisks(self.lu, self.instance, True)
6730 # Should we replace the secondary node?
6731 if self.new_node is not None:
6732 fn = self._ExecDrbd8Secondary
6734 fn = self._ExecDrbd8DiskOnly
6736 return fn(feedback_fn)
6739 # Deactivate the instance disks if we're replacing them on a
6742 _SafeShutdownInstanceDisks(self.lu, self.instance)
6744 def _CheckVolumeGroup(self, nodes):
6745 self.lu.LogInfo("Checking volume groups")
6747 vgname = self.cfg.GetVGName()
6749 # Make sure volume group exists on all involved nodes
6750 results = self.rpc.call_vg_list(nodes)
6752 raise errors.OpExecError("Can't list volume groups on the nodes")
6756 res.Raise("Error checking node %s" % node)
6757 if vgname not in res.payload:
6758 raise errors.OpExecError("Volume group '%s' not found on node %s" %
6761 def _CheckDisksExistence(self, nodes):
6762 # Check disk existence
6763 for idx, dev in enumerate(self.instance.disks):
6764 if idx not in self.disks:
6768 self.lu.LogInfo("Checking disk/%d on %s" % (idx, node))
6769 self.cfg.SetDiskID(dev, node)
6771 result = self.rpc.call_blockdev_find(node, dev)
6773 msg = result.fail_msg
6774 if msg or not result.payload:
6776 msg = "disk not found"
6777 raise errors.OpExecError("Can't find disk/%d on node %s: %s" %
6780 def _CheckDisksConsistency(self, node_name, on_primary, ldisk):
6781 for idx, dev in enumerate(self.instance.disks):
6782 if idx not in self.disks:
6785 self.lu.LogInfo("Checking disk/%d consistency on node %s" %
6788 if not _CheckDiskConsistency(self.lu, dev, node_name, on_primary,
6790 raise errors.OpExecError("Node %s has degraded storage, unsafe to"
6791 " replace disks for instance %s" %
6792 (node_name, self.instance.name))
6794 def _CreateNewStorage(self, node_name):
6795 vgname = self.cfg.GetVGName()
6798 for idx, dev in enumerate(self.instance.disks):
6799 if idx not in self.disks:
6802 self.lu.LogInfo("Adding storage on %s for disk/%d" % (node_name, idx))
6804 self.cfg.SetDiskID(dev, node_name)
6806 lv_names = [".disk%d_%s" % (idx, suffix) for suffix in ["data", "meta"]]
6807 names = _GenerateUniqueNames(self.lu, lv_names)
6809 lv_data = objects.Disk(dev_type=constants.LD_LV, size=dev.size,
6810 logical_id=(vgname, names[0]))
6811 lv_meta = objects.Disk(dev_type=constants.LD_LV, size=128,
6812 logical_id=(vgname, names[1]))
6814 new_lvs = [lv_data, lv_meta]
6815 old_lvs = dev.children
6816 iv_names[dev.iv_name] = (dev, old_lvs, new_lvs)
6818 # we pass force_create=True to force the LVM creation
6819 for new_lv in new_lvs:
6820 _CreateBlockDev(self.lu, node_name, self.instance, new_lv, True,
6821 _GetInstanceInfoText(self.instance), False)
6825 def _CheckDevices(self, node_name, iv_names):
6826 for name, (dev, _, _) in iv_names.iteritems():
6827 self.cfg.SetDiskID(dev, node_name)
6829 result = self.rpc.call_blockdev_find(node_name, dev)
6831 msg = result.fail_msg
6832 if msg or not result.payload:
6834 msg = "disk not found"
6835 raise errors.OpExecError("Can't find DRBD device %s: %s" %
6838 if result.payload.is_degraded:
6839 raise errors.OpExecError("DRBD device %s is degraded!" % name)
6841 def _RemoveOldStorage(self, node_name, iv_names):
6842 for name, (_, old_lvs, _) in iv_names.iteritems():
6843 self.lu.LogInfo("Remove logical volumes for %s" % name)
6846 self.cfg.SetDiskID(lv, node_name)
6848 msg = self.rpc.call_blockdev_remove(node_name, lv).fail_msg
6850 self.lu.LogWarning("Can't remove old LV: %s" % msg,
6851 hint="remove unused LVs manually")
6853 def _ReleaseNodeLock(self, node_name):
6854 """Releases the lock for a given node."""
6855 self.lu.context.glm.release(locking.LEVEL_NODE, node_name)
6857 def _ExecDrbd8DiskOnly(self, feedback_fn):
6858 """Replace a disk on the primary or secondary for DRBD 8.
6860 The algorithm for replace is quite complicated:
6862 1. for each disk to be replaced:
6864 1. create new LVs on the target node with unique names
6865 1. detach old LVs from the drbd device
6866 1. rename old LVs to name_replaced.<time_t>
6867 1. rename new LVs to old LVs
6868 1. attach the new LVs (with the old names now) to the drbd device
6870 1. wait for sync across all devices
6872 1. for each modified disk:
6874 1. remove old LVs (which have the name name_replaces.<time_t>)
6876 Failures are not very well handled.
6881 # Step: check device activation
6882 self.lu.LogStep(1, steps_total, "Check device existence")
6883 self._CheckDisksExistence([self.other_node, self.target_node])
6884 self._CheckVolumeGroup([self.target_node, self.other_node])
6886 # Step: check other node consistency
6887 self.lu.LogStep(2, steps_total, "Check peer consistency")
6888 self._CheckDisksConsistency(self.other_node,
6889 self.other_node == self.instance.primary_node,
6892 # Step: create new storage
6893 self.lu.LogStep(3, steps_total, "Allocate new storage")
6894 iv_names = self._CreateNewStorage(self.target_node)
6896 # Step: for each lv, detach+rename*2+attach
6897 self.lu.LogStep(4, steps_total, "Changing drbd configuration")
6898 for dev, old_lvs, new_lvs in iv_names.itervalues():
6899 self.lu.LogInfo("Detaching %s drbd from local storage" % dev.iv_name)
6901 result = self.rpc.call_blockdev_removechildren(self.target_node, dev,
6903 result.Raise("Can't detach drbd from local storage on node"
6904 " %s for device %s" % (self.target_node, dev.iv_name))
6906 #cfg.Update(instance)
6908 # ok, we created the new LVs, so now we know we have the needed
6909 # storage; as such, we proceed on the target node to rename
6910 # old_lv to _old, and new_lv to old_lv; note that we rename LVs
6911 # using the assumption that logical_id == physical_id (which in
6912 # turn is the unique_id on that node)
6914 # FIXME(iustin): use a better name for the replaced LVs
6915 temp_suffix = int(time.time())
6916 ren_fn = lambda d, suff: (d.physical_id[0],
6917 d.physical_id[1] + "_replaced-%s" % suff)
6919 # Build the rename list based on what LVs exist on the node
6920 rename_old_to_new = []
6921 for to_ren in old_lvs:
6922 result = self.rpc.call_blockdev_find(self.target_node, to_ren)
6923 if not result.fail_msg and result.payload:
6925 rename_old_to_new.append((to_ren, ren_fn(to_ren, temp_suffix)))
6927 self.lu.LogInfo("Renaming the old LVs on the target node")
6928 result = self.rpc.call_blockdev_rename(self.target_node,
6930 result.Raise("Can't rename old LVs on node %s" % self.target_node)
6932 # Now we rename the new LVs to the old LVs
6933 self.lu.LogInfo("Renaming the new LVs on the target node")
6934 rename_new_to_old = [(new, old.physical_id)
6935 for old, new in zip(old_lvs, new_lvs)]
6936 result = self.rpc.call_blockdev_rename(self.target_node,
6938 result.Raise("Can't rename new LVs on node %s" % self.target_node)
6940 for old, new in zip(old_lvs, new_lvs):
6941 new.logical_id = old.logical_id
6942 self.cfg.SetDiskID(new, self.target_node)
6944 for disk in old_lvs:
6945 disk.logical_id = ren_fn(disk, temp_suffix)
6946 self.cfg.SetDiskID(disk, self.target_node)
6948 # Now that the new lvs have the old name, we can add them to the device
6949 self.lu.LogInfo("Adding new mirror component on %s" % self.target_node)
6950 result = self.rpc.call_blockdev_addchildren(self.target_node, dev,
6952 msg = result.fail_msg
6954 for new_lv in new_lvs:
6955 msg2 = self.rpc.call_blockdev_remove(self.target_node,
6958 self.lu.LogWarning("Can't rollback device %s: %s", dev, msg2,
6959 hint=("cleanup manually the unused logical"
6961 raise errors.OpExecError("Can't add local storage to drbd: %s" % msg)
6963 dev.children = new_lvs
6965 self.cfg.Update(self.instance, feedback_fn)
6968 if self.early_release:
6969 self.lu.LogStep(cstep, steps_total, "Removing old storage")
6971 self._RemoveOldStorage(self.target_node, iv_names)
6972 # WARNING: we release both node locks here, do not do other RPCs
6973 # than WaitForSync to the primary node
6974 self._ReleaseNodeLock([self.target_node, self.other_node])
6977 # This can fail as the old devices are degraded and _WaitForSync
6978 # does a combined result over all disks, so we don't check its return value
6979 self.lu.LogStep(cstep, steps_total, "Sync devices")
6981 _WaitForSync(self.lu, self.instance)
6983 # Check all devices manually
6984 self._CheckDevices(self.instance.primary_node, iv_names)
6986 # Step: remove old storage
6987 if not self.early_release:
6988 self.lu.LogStep(cstep, steps_total, "Removing old storage")
6990 self._RemoveOldStorage(self.target_node, iv_names)
6992 def _ExecDrbd8Secondary(self, feedback_fn):
6993 """Replace the secondary node for DRBD 8.
6995 The algorithm for replace is quite complicated:
6996 - for all disks of the instance:
6997 - create new LVs on the new node with same names
6998 - shutdown the drbd device on the old secondary
6999 - disconnect the drbd network on the primary
7000 - create the drbd device on the new secondary
7001 - network attach the drbd on the primary, using an artifice:
7002 the drbd code for Attach() will connect to the network if it
7003 finds a device which is connected to the good local disks but
7005 - wait for sync across all devices
7006 - remove all disks from the old secondary
7008 Failures are not very well handled.
7013 # Step: check device activation
7014 self.lu.LogStep(1, steps_total, "Check device existence")
7015 self._CheckDisksExistence([self.instance.primary_node])
7016 self._CheckVolumeGroup([self.instance.primary_node])
7018 # Step: check other node consistency
7019 self.lu.LogStep(2, steps_total, "Check peer consistency")
7020 self._CheckDisksConsistency(self.instance.primary_node, True, True)
7022 # Step: create new storage
7023 self.lu.LogStep(3, steps_total, "Allocate new storage")
7024 for idx, dev in enumerate(self.instance.disks):
7025 self.lu.LogInfo("Adding new local storage on %s for disk/%d" %
7026 (self.new_node, idx))
7027 # we pass force_create=True to force LVM creation
7028 for new_lv in dev.children:
7029 _CreateBlockDev(self.lu, self.new_node, self.instance, new_lv, True,
7030 _GetInstanceInfoText(self.instance), False)
7032 # Step 4: dbrd minors and drbd setups changes
7033 # after this, we must manually remove the drbd minors on both the
7034 # error and the success paths
7035 self.lu.LogStep(4, steps_total, "Changing drbd configuration")
7036 minors = self.cfg.AllocateDRBDMinor([self.new_node
7037 for dev in self.instance.disks],
7039 logging.debug("Allocated minors %r", minors)
7042 for idx, (dev, new_minor) in enumerate(zip(self.instance.disks, minors)):
7043 self.lu.LogInfo("activating a new drbd on %s for disk/%d" %
7044 (self.new_node, idx))
7045 # create new devices on new_node; note that we create two IDs:
7046 # one without port, so the drbd will be activated without
7047 # networking information on the new node at this stage, and one
7048 # with network, for the latter activation in step 4
7049 (o_node1, o_node2, o_port, o_minor1, o_minor2, o_secret) = dev.logical_id
7050 if self.instance.primary_node == o_node1:
7053 assert self.instance.primary_node == o_node2, "Three-node instance?"
7056 new_alone_id = (self.instance.primary_node, self.new_node, None,
7057 p_minor, new_minor, o_secret)
7058 new_net_id = (self.instance.primary_node, self.new_node, o_port,
7059 p_minor, new_minor, o_secret)
7061 iv_names[idx] = (dev, dev.children, new_net_id)
7062 logging.debug("Allocated new_minor: %s, new_logical_id: %s", new_minor,
7064 new_drbd = objects.Disk(dev_type=constants.LD_DRBD8,
7065 logical_id=new_alone_id,
7066 children=dev.children,
7069 _CreateSingleBlockDev(self.lu, self.new_node, self.instance, new_drbd,
7070 _GetInstanceInfoText(self.instance), False)
7071 except errors.GenericError:
7072 self.cfg.ReleaseDRBDMinors(self.instance.name)
7075 # We have new devices, shutdown the drbd on the old secondary
7076 for idx, dev in enumerate(self.instance.disks):
7077 self.lu.LogInfo("Shutting down drbd for disk/%d on old node" % idx)
7078 self.cfg.SetDiskID(dev, self.target_node)
7079 msg = self.rpc.call_blockdev_shutdown(self.target_node, dev).fail_msg
7081 self.lu.LogWarning("Failed to shutdown drbd for disk/%d on old"
7082 "node: %s" % (idx, msg),
7083 hint=("Please cleanup this device manually as"
7084 " soon as possible"))
7086 self.lu.LogInfo("Detaching primary drbds from the network (=> standalone)")
7087 result = self.rpc.call_drbd_disconnect_net([self.instance.primary_node],
7088 self.node_secondary_ip,
7089 self.instance.disks)\
7090 [self.instance.primary_node]
7092 msg = result.fail_msg
7094 # detaches didn't succeed (unlikely)
7095 self.cfg.ReleaseDRBDMinors(self.instance.name)
7096 raise errors.OpExecError("Can't detach the disks from the network on"
7097 " old node: %s" % (msg,))
7099 # if we managed to detach at least one, we update all the disks of
7100 # the instance to point to the new secondary
7101 self.lu.LogInfo("Updating instance configuration")
7102 for dev, _, new_logical_id in iv_names.itervalues():
7103 dev.logical_id = new_logical_id
7104 self.cfg.SetDiskID(dev, self.instance.primary_node)
7106 self.cfg.Update(self.instance, feedback_fn)
7108 # and now perform the drbd attach
7109 self.lu.LogInfo("Attaching primary drbds to new secondary"
7110 " (standalone => connected)")
7111 result = self.rpc.call_drbd_attach_net([self.instance.primary_node,
7113 self.node_secondary_ip,
7114 self.instance.disks,
7117 for to_node, to_result in result.items():
7118 msg = to_result.fail_msg
7120 self.lu.LogWarning("Can't attach drbd disks on node %s: %s",
7122 hint=("please do a gnt-instance info to see the"
7123 " status of disks"))
7125 if self.early_release:
7126 self.lu.LogStep(cstep, steps_total, "Removing old storage")
7128 self._RemoveOldStorage(self.target_node, iv_names)
7129 # WARNING: we release all node locks here, do not do other RPCs
7130 # than WaitForSync to the primary node
7131 self._ReleaseNodeLock([self.instance.primary_node,
7136 # This can fail as the old devices are degraded and _WaitForSync
7137 # does a combined result over all disks, so we don't check its return value
7138 self.lu.LogStep(cstep, steps_total, "Sync devices")
7140 _WaitForSync(self.lu, self.instance)
7142 # Check all devices manually
7143 self._CheckDevices(self.instance.primary_node, iv_names)
7145 # Step: remove old storage
7146 if not self.early_release:
7147 self.lu.LogStep(cstep, steps_total, "Removing old storage")
7148 self._RemoveOldStorage(self.target_node, iv_names)
7151 class LURepairNodeStorage(NoHooksLU):
7152 """Repairs the volume group on a node.
7155 _OP_REQP = ["node_name"]
7158 def CheckArguments(self):
7159 self.op.node_name = _ExpandNodeName(self.cfg, self.op.node_name)
7161 def ExpandNames(self):
7162 self.needed_locks = {
7163 locking.LEVEL_NODE: [self.op.node_name],
7166 def _CheckFaultyDisks(self, instance, node_name):
7167 """Ensure faulty disks abort the opcode or at least warn."""
7169 if _FindFaultyInstanceDisks(self.cfg, self.rpc, instance,
7171 raise errors.OpPrereqError("Instance '%s' has faulty disks on"
7172 " node '%s'" % (instance.name, node_name),
7174 except errors.OpPrereqError, err:
7175 if self.op.ignore_consistency:
7176 self.proc.LogWarning(str(err.args[0]))
7180 def CheckPrereq(self):
7181 """Check prerequisites.
7184 storage_type = self.op.storage_type
7186 if (constants.SO_FIX_CONSISTENCY not in
7187 constants.VALID_STORAGE_OPERATIONS.get(storage_type, [])):
7188 raise errors.OpPrereqError("Storage units of type '%s' can not be"
7189 " repaired" % storage_type,
7192 # Check whether any instance on this node has faulty disks
7193 for inst in _GetNodeInstances(self.cfg, self.op.node_name):
7194 if not inst.admin_up:
7196 check_nodes = set(inst.all_nodes)
7197 check_nodes.discard(self.op.node_name)
7198 for inst_node_name in check_nodes:
7199 self._CheckFaultyDisks(inst, inst_node_name)
7201 def Exec(self, feedback_fn):
7202 feedback_fn("Repairing storage unit '%s' on %s ..." %
7203 (self.op.name, self.op.node_name))
7205 st_args = _GetStorageTypeArgs(self.cfg, self.op.storage_type)
7206 result = self.rpc.call_storage_execute(self.op.node_name,
7207 self.op.storage_type, st_args,
7209 constants.SO_FIX_CONSISTENCY)
7210 result.Raise("Failed to repair storage unit '%s' on %s" %
7211 (self.op.name, self.op.node_name))
7214 class LUNodeEvacuationStrategy(NoHooksLU):
7215 """Computes the node evacuation strategy.
7218 _OP_REQP = ["nodes"]
7221 def CheckArguments(self):
7222 if not hasattr(self.op, "remote_node"):
7223 self.op.remote_node = None
7224 if not hasattr(self.op, "iallocator"):
7225 self.op.iallocator = None
7226 if self.op.remote_node is not None and self.op.iallocator is not None:
7227 raise errors.OpPrereqError("Give either the iallocator or the new"
7228 " secondary, not both", errors.ECODE_INVAL)
7230 def ExpandNames(self):
7231 self.op.nodes = _GetWantedNodes(self, self.op.nodes)
7232 self.needed_locks = locks = {}
7233 if self.op.remote_node is None:
7234 locks[locking.LEVEL_NODE] = locking.ALL_SET
7236 self.op.remote_node = _ExpandNodeName(self.cfg, self.op.remote_node)
7237 locks[locking.LEVEL_NODE] = self.op.nodes + [self.op.remote_node]
7239 def CheckPrereq(self):
7242 def Exec(self, feedback_fn):
7243 if self.op.remote_node is not None:
7245 for node in self.op.nodes:
7246 instances.extend(_GetNodeSecondaryInstances(self.cfg, node))
7249 if i.primary_node == self.op.remote_node:
7250 raise errors.OpPrereqError("Node %s is the primary node of"
7251 " instance %s, cannot use it as"
7253 (self.op.remote_node, i.name),
7255 result.append([i.name, self.op.remote_node])
7257 ial = IAllocator(self.cfg, self.rpc,
7258 mode=constants.IALLOCATOR_MODE_MEVAC,
7259 evac_nodes=self.op.nodes)
7260 ial.Run(self.op.iallocator, validate=True)
7262 raise errors.OpExecError("No valid evacuation solution: %s" % ial.info,
7268 class LUGrowDisk(LogicalUnit):
7269 """Grow a disk of an instance.
7273 HTYPE = constants.HTYPE_INSTANCE
7274 _OP_REQP = ["instance_name", "disk", "amount", "wait_for_sync"]
7277 def ExpandNames(self):
7278 self._ExpandAndLockInstance()
7279 self.needed_locks[locking.LEVEL_NODE] = []
7280 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
7282 def DeclareLocks(self, level):
7283 if level == locking.LEVEL_NODE:
7284 self._LockInstancesNodes()
7286 def BuildHooksEnv(self):
7289 This runs on the master, the primary and all the secondaries.
7293 "DISK": self.op.disk,
7294 "AMOUNT": self.op.amount,
7296 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
7297 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
7300 def CheckPrereq(self):
7301 """Check prerequisites.
7303 This checks that the instance is in the cluster.
7306 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
7307 assert instance is not None, \
7308 "Cannot retrieve locked instance %s" % self.op.instance_name
7309 nodenames = list(instance.all_nodes)
7310 for node in nodenames:
7311 _CheckNodeOnline(self, node)
7314 self.instance = instance
7316 if instance.disk_template not in (constants.DT_PLAIN, constants.DT_DRBD8):
7317 raise errors.OpPrereqError("Instance's disk layout does not support"
7318 " growing.", errors.ECODE_INVAL)
7320 self.disk = instance.FindDisk(self.op.disk)
7322 nodeinfo = self.rpc.call_node_info(nodenames, self.cfg.GetVGName(),
7323 instance.hypervisor)
7324 for node in nodenames:
7325 info = nodeinfo[node]
7326 info.Raise("Cannot get current information from node %s" % node)
7327 vg_free = info.payload.get('vg_free', None)
7328 if not isinstance(vg_free, int):
7329 raise errors.OpPrereqError("Can't compute free disk space on"
7330 " node %s" % node, errors.ECODE_ENVIRON)
7331 if self.op.amount > vg_free:
7332 raise errors.OpPrereqError("Not enough disk space on target node %s:"
7333 " %d MiB available, %d MiB required" %
7334 (node, vg_free, self.op.amount),
7337 def Exec(self, feedback_fn):
7338 """Execute disk grow.
7341 instance = self.instance
7343 for node in instance.all_nodes:
7344 self.cfg.SetDiskID(disk, node)
7345 result = self.rpc.call_blockdev_grow(node, disk, self.op.amount)
7346 result.Raise("Grow request failed to node %s" % node)
7348 # TODO: Rewrite code to work properly
7349 # DRBD goes into sync mode for a short amount of time after executing the
7350 # "resize" command. DRBD 8.x below version 8.0.13 contains a bug whereby
7351 # calling "resize" in sync mode fails. Sleeping for a short amount of
7352 # time is a work-around.
7355 disk.RecordGrow(self.op.amount)
7356 self.cfg.Update(instance, feedback_fn)
7357 if self.op.wait_for_sync:
7358 disk_abort = not _WaitForSync(self, instance)
7360 self.proc.LogWarning("Warning: disk sync-ing has not returned a good"
7361 " status.\nPlease check the instance.")
7364 class LUQueryInstanceData(NoHooksLU):
7365 """Query runtime instance data.
7368 _OP_REQP = ["instances", "static"]
7371 def ExpandNames(self):
7372 self.needed_locks = {}
7373 self.share_locks = dict.fromkeys(locking.LEVELS, 1)
7375 if not isinstance(self.op.instances, list):
7376 raise errors.OpPrereqError("Invalid argument type 'instances'",
7379 if self.op.instances:
7380 self.wanted_names = []
7381 for name in self.op.instances:
7382 full_name = _ExpandInstanceName(self.cfg, name)
7383 self.wanted_names.append(full_name)
7384 self.needed_locks[locking.LEVEL_INSTANCE] = self.wanted_names
7386 self.wanted_names = None
7387 self.needed_locks[locking.LEVEL_INSTANCE] = locking.ALL_SET
7389 self.needed_locks[locking.LEVEL_NODE] = []
7390 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
7392 def DeclareLocks(self, level):
7393 if level == locking.LEVEL_NODE:
7394 self._LockInstancesNodes()
7396 def CheckPrereq(self):
7397 """Check prerequisites.
7399 This only checks the optional instance list against the existing names.
7402 if self.wanted_names is None:
7403 self.wanted_names = self.acquired_locks[locking.LEVEL_INSTANCE]
7405 self.wanted_instances = [self.cfg.GetInstanceInfo(name) for name
7406 in self.wanted_names]
7409 def _ComputeBlockdevStatus(self, node, instance_name, dev):
7410 """Returns the status of a block device
7413 if self.op.static or not node:
7416 self.cfg.SetDiskID(dev, node)
7418 result = self.rpc.call_blockdev_find(node, dev)
7422 result.Raise("Can't compute disk status for %s" % instance_name)
7424 status = result.payload
7428 return (status.dev_path, status.major, status.minor,
7429 status.sync_percent, status.estimated_time,
7430 status.is_degraded, status.ldisk_status)
7432 def _ComputeDiskStatus(self, instance, snode, dev):
7433 """Compute block device status.
7436 if dev.dev_type in constants.LDS_DRBD:
7437 # we change the snode then (otherwise we use the one passed in)
7438 if dev.logical_id[0] == instance.primary_node:
7439 snode = dev.logical_id[1]
7441 snode = dev.logical_id[0]
7443 dev_pstatus = self._ComputeBlockdevStatus(instance.primary_node,
7445 dev_sstatus = self._ComputeBlockdevStatus(snode, instance.name, dev)
7448 dev_children = [self._ComputeDiskStatus(instance, snode, child)
7449 for child in dev.children]
7454 "iv_name": dev.iv_name,
7455 "dev_type": dev.dev_type,
7456 "logical_id": dev.logical_id,
7457 "physical_id": dev.physical_id,
7458 "pstatus": dev_pstatus,
7459 "sstatus": dev_sstatus,
7460 "children": dev_children,
7467 def Exec(self, feedback_fn):
7468 """Gather and return data"""
7471 cluster = self.cfg.GetClusterInfo()
7473 for instance in self.wanted_instances:
7474 if not self.op.static:
7475 remote_info = self.rpc.call_instance_info(instance.primary_node,
7477 instance.hypervisor)
7478 remote_info.Raise("Error checking node %s" % instance.primary_node)
7479 remote_info = remote_info.payload
7480 if remote_info and "state" in remote_info:
7483 remote_state = "down"
7486 if instance.admin_up:
7489 config_state = "down"
7491 disks = [self._ComputeDiskStatus(instance, None, device)
7492 for device in instance.disks]
7495 "name": instance.name,
7496 "config_state": config_state,
7497 "run_state": remote_state,
7498 "pnode": instance.primary_node,
7499 "snodes": instance.secondary_nodes,
7501 # this happens to be the same format used for hooks
7502 "nics": _NICListToTuple(self, instance.nics),
7504 "hypervisor": instance.hypervisor,
7505 "network_port": instance.network_port,
7506 "hv_instance": instance.hvparams,
7507 "hv_actual": cluster.FillHV(instance, skip_globals=True),
7508 "be_instance": instance.beparams,
7509 "be_actual": cluster.FillBE(instance),
7510 "serial_no": instance.serial_no,
7511 "mtime": instance.mtime,
7512 "ctime": instance.ctime,
7513 "uuid": instance.uuid,
7516 result[instance.name] = idict
7521 class LUSetInstanceParams(LogicalUnit):
7522 """Modifies an instances's parameters.
7525 HPATH = "instance-modify"
7526 HTYPE = constants.HTYPE_INSTANCE
7527 _OP_REQP = ["instance_name"]
7530 def CheckArguments(self):
7531 if not hasattr(self.op, 'nics'):
7533 if not hasattr(self.op, 'disks'):
7535 if not hasattr(self.op, 'beparams'):
7536 self.op.beparams = {}
7537 if not hasattr(self.op, 'hvparams'):
7538 self.op.hvparams = {}
7539 self.op.force = getattr(self.op, "force", False)
7540 if not (self.op.nics or self.op.disks or
7541 self.op.hvparams or self.op.beparams):
7542 raise errors.OpPrereqError("No changes submitted", errors.ECODE_INVAL)
7544 if self.op.hvparams:
7545 _CheckGlobalHvParams(self.op.hvparams)
7549 for disk_op, disk_dict in self.op.disks:
7550 if disk_op == constants.DDM_REMOVE:
7553 elif disk_op == constants.DDM_ADD:
7556 if not isinstance(disk_op, int):
7557 raise errors.OpPrereqError("Invalid disk index", errors.ECODE_INVAL)
7558 if not isinstance(disk_dict, dict):
7559 msg = "Invalid disk value: expected dict, got '%s'" % disk_dict
7560 raise errors.OpPrereqError(msg, errors.ECODE_INVAL)
7562 if disk_op == constants.DDM_ADD:
7563 mode = disk_dict.setdefault('mode', constants.DISK_RDWR)
7564 if mode not in constants.DISK_ACCESS_SET:
7565 raise errors.OpPrereqError("Invalid disk access mode '%s'" % mode,
7567 size = disk_dict.get('size', None)
7569 raise errors.OpPrereqError("Required disk parameter size missing",
7573 except (TypeError, ValueError), err:
7574 raise errors.OpPrereqError("Invalid disk size parameter: %s" %
7575 str(err), errors.ECODE_INVAL)
7576 disk_dict['size'] = size
7578 # modification of disk
7579 if 'size' in disk_dict:
7580 raise errors.OpPrereqError("Disk size change not possible, use"
7581 " grow-disk", errors.ECODE_INVAL)
7583 if disk_addremove > 1:
7584 raise errors.OpPrereqError("Only one disk add or remove operation"
7585 " supported at a time", errors.ECODE_INVAL)
7589 for nic_op, nic_dict in self.op.nics:
7590 if nic_op == constants.DDM_REMOVE:
7593 elif nic_op == constants.DDM_ADD:
7596 if not isinstance(nic_op, int):
7597 raise errors.OpPrereqError("Invalid nic index", errors.ECODE_INVAL)
7598 if not isinstance(nic_dict, dict):
7599 msg = "Invalid nic value: expected dict, got '%s'" % nic_dict
7600 raise errors.OpPrereqError(msg, errors.ECODE_INVAL)
7602 # nic_dict should be a dict
7603 nic_ip = nic_dict.get('ip', None)
7604 if nic_ip is not None:
7605 if nic_ip.lower() == constants.VALUE_NONE:
7606 nic_dict['ip'] = None
7608 if not utils.IsValidIP(nic_ip):
7609 raise errors.OpPrereqError("Invalid IP address '%s'" % nic_ip,
7612 nic_bridge = nic_dict.get('bridge', None)
7613 nic_link = nic_dict.get('link', None)
7614 if nic_bridge and nic_link:
7615 raise errors.OpPrereqError("Cannot pass 'bridge' and 'link'"
7616 " at the same time", errors.ECODE_INVAL)
7617 elif nic_bridge and nic_bridge.lower() == constants.VALUE_NONE:
7618 nic_dict['bridge'] = None
7619 elif nic_link and nic_link.lower() == constants.VALUE_NONE:
7620 nic_dict['link'] = None
7622 if nic_op == constants.DDM_ADD:
7623 nic_mac = nic_dict.get('mac', None)
7625 nic_dict['mac'] = constants.VALUE_AUTO
7627 if 'mac' in nic_dict:
7628 nic_mac = nic_dict['mac']
7629 if nic_mac not in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
7630 nic_mac = utils.NormalizeAndValidateMac(nic_mac)
7632 if nic_op != constants.DDM_ADD and nic_mac == constants.VALUE_AUTO:
7633 raise errors.OpPrereqError("'auto' is not a valid MAC address when"
7634 " modifying an existing nic",
7637 if nic_addremove > 1:
7638 raise errors.OpPrereqError("Only one NIC add or remove operation"
7639 " supported at a time", errors.ECODE_INVAL)
7641 def ExpandNames(self):
7642 self._ExpandAndLockInstance()
7643 self.needed_locks[locking.LEVEL_NODE] = []
7644 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
7646 def DeclareLocks(self, level):
7647 if level == locking.LEVEL_NODE:
7648 self._LockInstancesNodes()
7650 def BuildHooksEnv(self):
7653 This runs on the master, primary and secondaries.
7657 if constants.BE_MEMORY in self.be_new:
7658 args['memory'] = self.be_new[constants.BE_MEMORY]
7659 if constants.BE_VCPUS in self.be_new:
7660 args['vcpus'] = self.be_new[constants.BE_VCPUS]
7661 # TODO: export disk changes. Note: _BuildInstanceHookEnv* don't export disk
7662 # information at all.
7665 nic_override = dict(self.op.nics)
7666 c_nicparams = self.cluster.nicparams[constants.PP_DEFAULT]
7667 for idx, nic in enumerate(self.instance.nics):
7668 if idx in nic_override:
7669 this_nic_override = nic_override[idx]
7671 this_nic_override = {}
7672 if 'ip' in this_nic_override:
7673 ip = this_nic_override['ip']
7676 if 'mac' in this_nic_override:
7677 mac = this_nic_override['mac']
7680 if idx in self.nic_pnew:
7681 nicparams = self.nic_pnew[idx]
7683 nicparams = objects.FillDict(c_nicparams, nic.nicparams)
7684 mode = nicparams[constants.NIC_MODE]
7685 link = nicparams[constants.NIC_LINK]
7686 args['nics'].append((ip, mac, mode, link))
7687 if constants.DDM_ADD in nic_override:
7688 ip = nic_override[constants.DDM_ADD].get('ip', None)
7689 mac = nic_override[constants.DDM_ADD]['mac']
7690 nicparams = self.nic_pnew[constants.DDM_ADD]
7691 mode = nicparams[constants.NIC_MODE]
7692 link = nicparams[constants.NIC_LINK]
7693 args['nics'].append((ip, mac, mode, link))
7694 elif constants.DDM_REMOVE in nic_override:
7695 del args['nics'][-1]
7697 env = _BuildInstanceHookEnvByObject(self, self.instance, override=args)
7698 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
7702 def _GetUpdatedParams(old_params, update_dict,
7703 default_values, parameter_types):
7704 """Return the new params dict for the given params.
7706 @type old_params: dict
7707 @param old_params: old parameters
7708 @type update_dict: dict
7709 @param update_dict: dict containing new parameter values,
7710 or constants.VALUE_DEFAULT to reset the
7711 parameter to its default value
7712 @type default_values: dict
7713 @param default_values: default values for the filled parameters
7714 @type parameter_types: dict
7715 @param parameter_types: dict mapping target dict keys to types
7716 in constants.ENFORCEABLE_TYPES
7717 @rtype: (dict, dict)
7718 @return: (new_parameters, filled_parameters)
7721 params_copy = copy.deepcopy(old_params)
7722 for key, val in update_dict.iteritems():
7723 if val == constants.VALUE_DEFAULT:
7725 del params_copy[key]
7729 params_copy[key] = val
7730 utils.ForceDictType(params_copy, parameter_types)
7731 params_filled = objects.FillDict(default_values, params_copy)
7732 return (params_copy, params_filled)
7734 def CheckPrereq(self):
7735 """Check prerequisites.
7737 This only checks the instance list against the existing names.
7740 self.force = self.op.force
7742 # checking the new params on the primary/secondary nodes
7744 instance = self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
7745 cluster = self.cluster = self.cfg.GetClusterInfo()
7746 assert self.instance is not None, \
7747 "Cannot retrieve locked instance %s" % self.op.instance_name
7748 pnode = instance.primary_node
7749 nodelist = list(instance.all_nodes)
7751 # hvparams processing
7752 if self.op.hvparams:
7753 i_hvdict, hv_new = self._GetUpdatedParams(
7754 instance.hvparams, self.op.hvparams,
7755 cluster.hvparams[instance.hypervisor],
7756 constants.HVS_PARAMETER_TYPES)
7758 hypervisor.GetHypervisor(
7759 instance.hypervisor).CheckParameterSyntax(hv_new)
7760 _CheckHVParams(self, nodelist, instance.hypervisor, hv_new)
7761 self.hv_new = hv_new # the new actual values
7762 self.hv_inst = i_hvdict # the new dict (without defaults)
7764 self.hv_new = self.hv_inst = {}
7766 # beparams processing
7767 if self.op.beparams:
7768 i_bedict, be_new = self._GetUpdatedParams(
7769 instance.beparams, self.op.beparams,
7770 cluster.beparams[constants.PP_DEFAULT],
7771 constants.BES_PARAMETER_TYPES)
7772 self.be_new = be_new # the new actual values
7773 self.be_inst = i_bedict # the new dict (without defaults)
7775 self.be_new = self.be_inst = {}
7779 if constants.BE_MEMORY in self.op.beparams and not self.force:
7780 mem_check_list = [pnode]
7781 if be_new[constants.BE_AUTO_BALANCE]:
7782 # either we changed auto_balance to yes or it was from before
7783 mem_check_list.extend(instance.secondary_nodes)
7784 instance_info = self.rpc.call_instance_info(pnode, instance.name,
7785 instance.hypervisor)
7786 nodeinfo = self.rpc.call_node_info(mem_check_list, self.cfg.GetVGName(),
7787 instance.hypervisor)
7788 pninfo = nodeinfo[pnode]
7789 msg = pninfo.fail_msg
7791 # Assume the primary node is unreachable and go ahead
7792 self.warn.append("Can't get info from primary node %s: %s" %
7794 elif not isinstance(pninfo.payload.get('memory_free', None), int):
7795 self.warn.append("Node data from primary node %s doesn't contain"
7796 " free memory information" % pnode)
7797 elif instance_info.fail_msg:
7798 self.warn.append("Can't get instance runtime information: %s" %
7799 instance_info.fail_msg)
7801 if instance_info.payload:
7802 current_mem = int(instance_info.payload['memory'])
7804 # Assume instance not running
7805 # (there is a slight race condition here, but it's not very probable,
7806 # and we have no other way to check)
7808 miss_mem = (be_new[constants.BE_MEMORY] - current_mem -
7809 pninfo.payload['memory_free'])
7811 raise errors.OpPrereqError("This change will prevent the instance"
7812 " from starting, due to %d MB of memory"
7813 " missing on its primary node" % miss_mem,
7816 if be_new[constants.BE_AUTO_BALANCE]:
7817 for node, nres in nodeinfo.items():
7818 if node not in instance.secondary_nodes:
7822 self.warn.append("Can't get info from secondary node %s: %s" %
7824 elif not isinstance(nres.payload.get('memory_free', None), int):
7825 self.warn.append("Secondary node %s didn't return free"
7826 " memory information" % node)
7827 elif be_new[constants.BE_MEMORY] > nres.payload['memory_free']:
7828 self.warn.append("Not enough memory to failover instance to"
7829 " secondary node %s" % node)
7834 for nic_op, nic_dict in self.op.nics:
7835 if nic_op == constants.DDM_REMOVE:
7836 if not instance.nics:
7837 raise errors.OpPrereqError("Instance has no NICs, cannot remove",
7840 if nic_op != constants.DDM_ADD:
7842 if not instance.nics:
7843 raise errors.OpPrereqError("Invalid NIC index %s, instance has"
7844 " no NICs" % nic_op,
7846 if nic_op < 0 or nic_op >= len(instance.nics):
7847 raise errors.OpPrereqError("Invalid NIC index %s, valid values"
7849 (nic_op, len(instance.nics) - 1),
7851 old_nic_params = instance.nics[nic_op].nicparams
7852 old_nic_ip = instance.nics[nic_op].ip
7857 update_params_dict = dict([(key, nic_dict[key])
7858 for key in constants.NICS_PARAMETERS
7859 if key in nic_dict])
7861 if 'bridge' in nic_dict:
7862 update_params_dict[constants.NIC_LINK] = nic_dict['bridge']
7864 new_nic_params, new_filled_nic_params = \
7865 self._GetUpdatedParams(old_nic_params, update_params_dict,
7866 cluster.nicparams[constants.PP_DEFAULT],
7867 constants.NICS_PARAMETER_TYPES)
7868 objects.NIC.CheckParameterSyntax(new_filled_nic_params)
7869 self.nic_pinst[nic_op] = new_nic_params
7870 self.nic_pnew[nic_op] = new_filled_nic_params
7871 new_nic_mode = new_filled_nic_params[constants.NIC_MODE]
7873 if new_nic_mode == constants.NIC_MODE_BRIDGED:
7874 nic_bridge = new_filled_nic_params[constants.NIC_LINK]
7875 msg = self.rpc.call_bridges_exist(pnode, [nic_bridge]).fail_msg
7877 msg = "Error checking bridges on node %s: %s" % (pnode, msg)
7879 self.warn.append(msg)
7881 raise errors.OpPrereqError(msg, errors.ECODE_ENVIRON)
7882 if new_nic_mode == constants.NIC_MODE_ROUTED:
7883 if 'ip' in nic_dict:
7884 nic_ip = nic_dict['ip']
7888 raise errors.OpPrereqError('Cannot set the nic ip to None'
7889 ' on a routed nic', errors.ECODE_INVAL)
7890 if 'mac' in nic_dict:
7891 nic_mac = nic_dict['mac']
7893 raise errors.OpPrereqError('Cannot set the nic mac to None',
7895 elif nic_mac in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
7896 # otherwise generate the mac
7897 nic_dict['mac'] = self.cfg.GenerateMAC(self.proc.GetECId())
7899 # or validate/reserve the current one
7901 self.cfg.ReserveMAC(nic_mac, self.proc.GetECId())
7902 except errors.ReservationError:
7903 raise errors.OpPrereqError("MAC address %s already in use"
7904 " in cluster" % nic_mac,
7905 errors.ECODE_NOTUNIQUE)
7908 if self.op.disks and instance.disk_template == constants.DT_DISKLESS:
7909 raise errors.OpPrereqError("Disk operations not supported for"
7910 " diskless instances",
7912 for disk_op, _ in self.op.disks:
7913 if disk_op == constants.DDM_REMOVE:
7914 if len(instance.disks) == 1:
7915 raise errors.OpPrereqError("Cannot remove the last disk of"
7918 ins_l = self.rpc.call_instance_list([pnode], [instance.hypervisor])
7919 ins_l = ins_l[pnode]
7920 msg = ins_l.fail_msg
7922 raise errors.OpPrereqError("Can't contact node %s: %s" %
7923 (pnode, msg), errors.ECODE_ENVIRON)
7924 if instance.name in ins_l.payload:
7925 raise errors.OpPrereqError("Instance is running, can't remove"
7926 " disks.", errors.ECODE_STATE)
7928 if (disk_op == constants.DDM_ADD and
7929 len(instance.nics) >= constants.MAX_DISKS):
7930 raise errors.OpPrereqError("Instance has too many disks (%d), cannot"
7931 " add more" % constants.MAX_DISKS,
7933 if disk_op not in (constants.DDM_ADD, constants.DDM_REMOVE):
7935 if disk_op < 0 or disk_op >= len(instance.disks):
7936 raise errors.OpPrereqError("Invalid disk index %s, valid values"
7938 (disk_op, len(instance.disks)),
7943 def Exec(self, feedback_fn):
7944 """Modifies an instance.
7946 All parameters take effect only at the next restart of the instance.
7949 # Process here the warnings from CheckPrereq, as we don't have a
7950 # feedback_fn there.
7951 for warn in self.warn:
7952 feedback_fn("WARNING: %s" % warn)
7955 instance = self.instance
7957 for disk_op, disk_dict in self.op.disks:
7958 if disk_op == constants.DDM_REMOVE:
7959 # remove the last disk
7960 device = instance.disks.pop()
7961 device_idx = len(instance.disks)
7962 for node, disk in device.ComputeNodeTree(instance.primary_node):
7963 self.cfg.SetDiskID(disk, node)
7964 msg = self.rpc.call_blockdev_remove(node, disk).fail_msg
7966 self.LogWarning("Could not remove disk/%d on node %s: %s,"
7967 " continuing anyway", device_idx, node, msg)
7968 result.append(("disk/%d" % device_idx, "remove"))
7969 elif disk_op == constants.DDM_ADD:
7971 if instance.disk_template == constants.DT_FILE:
7972 file_driver, file_path = instance.disks[0].logical_id
7973 file_path = os.path.dirname(file_path)
7975 file_driver = file_path = None
7976 disk_idx_base = len(instance.disks)
7977 new_disk = _GenerateDiskTemplate(self,
7978 instance.disk_template,
7979 instance.name, instance.primary_node,
7980 instance.secondary_nodes,
7985 instance.disks.append(new_disk)
7986 info = _GetInstanceInfoText(instance)
7988 logging.info("Creating volume %s for instance %s",
7989 new_disk.iv_name, instance.name)
7990 # Note: this needs to be kept in sync with _CreateDisks
7992 for node in instance.all_nodes:
7993 f_create = node == instance.primary_node
7995 _CreateBlockDev(self, node, instance, new_disk,
7996 f_create, info, f_create)
7997 except errors.OpExecError, err:
7998 self.LogWarning("Failed to create volume %s (%s) on"
8000 new_disk.iv_name, new_disk, node, err)
8001 result.append(("disk/%d" % disk_idx_base, "add:size=%s,mode=%s" %
8002 (new_disk.size, new_disk.mode)))
8004 # change a given disk
8005 instance.disks[disk_op].mode = disk_dict['mode']
8006 result.append(("disk.mode/%d" % disk_op, disk_dict['mode']))
8008 for nic_op, nic_dict in self.op.nics:
8009 if nic_op == constants.DDM_REMOVE:
8010 # remove the last nic
8011 del instance.nics[-1]
8012 result.append(("nic.%d" % len(instance.nics), "remove"))
8013 elif nic_op == constants.DDM_ADD:
8014 # mac and bridge should be set, by now
8015 mac = nic_dict['mac']
8016 ip = nic_dict.get('ip', None)
8017 nicparams = self.nic_pinst[constants.DDM_ADD]
8018 new_nic = objects.NIC(mac=mac, ip=ip, nicparams=nicparams)
8019 instance.nics.append(new_nic)
8020 result.append(("nic.%d" % (len(instance.nics) - 1),
8021 "add:mac=%s,ip=%s,mode=%s,link=%s" %
8022 (new_nic.mac, new_nic.ip,
8023 self.nic_pnew[constants.DDM_ADD][constants.NIC_MODE],
8024 self.nic_pnew[constants.DDM_ADD][constants.NIC_LINK]
8027 for key in 'mac', 'ip':
8029 setattr(instance.nics[nic_op], key, nic_dict[key])
8030 if nic_op in self.nic_pinst:
8031 instance.nics[nic_op].nicparams = self.nic_pinst[nic_op]
8032 for key, val in nic_dict.iteritems():
8033 result.append(("nic.%s/%d" % (key, nic_op), val))
8036 if self.op.hvparams:
8037 instance.hvparams = self.hv_inst
8038 for key, val in self.op.hvparams.iteritems():
8039 result.append(("hv/%s" % key, val))
8042 if self.op.beparams:
8043 instance.beparams = self.be_inst
8044 for key, val in self.op.beparams.iteritems():
8045 result.append(("be/%s" % key, val))
8047 self.cfg.Update(instance, feedback_fn)
8052 class LUQueryExports(NoHooksLU):
8053 """Query the exports list
8056 _OP_REQP = ['nodes']
8059 def ExpandNames(self):
8060 self.needed_locks = {}
8061 self.share_locks[locking.LEVEL_NODE] = 1
8062 if not self.op.nodes:
8063 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
8065 self.needed_locks[locking.LEVEL_NODE] = \
8066 _GetWantedNodes(self, self.op.nodes)
8068 def CheckPrereq(self):
8069 """Check prerequisites.
8072 self.nodes = self.acquired_locks[locking.LEVEL_NODE]
8074 def Exec(self, feedback_fn):
8075 """Compute the list of all the exported system images.
8078 @return: a dictionary with the structure node->(export-list)
8079 where export-list is a list of the instances exported on
8083 rpcresult = self.rpc.call_export_list(self.nodes)
8085 for node in rpcresult:
8086 if rpcresult[node].fail_msg:
8087 result[node] = False
8089 result[node] = rpcresult[node].payload
8094 class LUExportInstance(LogicalUnit):
8095 """Export an instance to an image in the cluster.
8098 HPATH = "instance-export"
8099 HTYPE = constants.HTYPE_INSTANCE
8100 _OP_REQP = ["instance_name", "target_node", "shutdown"]
8103 def CheckArguments(self):
8104 """Check the arguments.
8107 self.shutdown_timeout = getattr(self.op, "shutdown_timeout",
8108 constants.DEFAULT_SHUTDOWN_TIMEOUT)
8110 def ExpandNames(self):
8111 self._ExpandAndLockInstance()
8112 # FIXME: lock only instance primary and destination node
8114 # Sad but true, for now we have do lock all nodes, as we don't know where
8115 # the previous export might be, and and in this LU we search for it and
8116 # remove it from its current node. In the future we could fix this by:
8117 # - making a tasklet to search (share-lock all), then create the new one,
8118 # then one to remove, after
8119 # - removing the removal operation altogether
8120 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
8122 def DeclareLocks(self, level):
8123 """Last minute lock declaration."""
8124 # All nodes are locked anyway, so nothing to do here.
8126 def BuildHooksEnv(self):
8129 This will run on the master, primary node and target node.
8133 "EXPORT_NODE": self.op.target_node,
8134 "EXPORT_DO_SHUTDOWN": self.op.shutdown,
8135 "SHUTDOWN_TIMEOUT": self.shutdown_timeout,
8137 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
8138 nl = [self.cfg.GetMasterNode(), self.instance.primary_node,
8139 self.op.target_node]
8142 def CheckPrereq(self):
8143 """Check prerequisites.
8145 This checks that the instance and node names are valid.
8148 instance_name = self.op.instance_name
8149 self.instance = self.cfg.GetInstanceInfo(instance_name)
8150 assert self.instance is not None, \
8151 "Cannot retrieve locked instance %s" % self.op.instance_name
8152 _CheckNodeOnline(self, self.instance.primary_node)
8154 self.op.target_node = _ExpandNodeName(self.cfg, self.op.target_node)
8155 self.dst_node = self.cfg.GetNodeInfo(self.op.target_node)
8156 assert self.dst_node is not None
8158 _CheckNodeOnline(self, self.dst_node.name)
8159 _CheckNodeNotDrained(self, self.dst_node.name)
8161 # instance disk type verification
8162 for disk in self.instance.disks:
8163 if disk.dev_type == constants.LD_FILE:
8164 raise errors.OpPrereqError("Export not supported for instances with"
8165 " file-based disks", errors.ECODE_INVAL)
8167 def Exec(self, feedback_fn):
8168 """Export an instance to an image in the cluster.
8171 instance = self.instance
8172 dst_node = self.dst_node
8173 src_node = instance.primary_node
8175 if self.op.shutdown:
8176 # shutdown the instance, but not the disks
8177 feedback_fn("Shutting down instance %s" % instance.name)
8178 result = self.rpc.call_instance_shutdown(src_node, instance,
8179 self.shutdown_timeout)
8180 result.Raise("Could not shutdown instance %s on"
8181 " node %s" % (instance.name, src_node))
8183 vgname = self.cfg.GetVGName()
8187 # set the disks ID correctly since call_instance_start needs the
8188 # correct drbd minor to create the symlinks
8189 for disk in instance.disks:
8190 self.cfg.SetDiskID(disk, src_node)
8192 activate_disks = (not instance.admin_up)
8195 # Activate the instance disks if we'exporting a stopped instance
8196 feedback_fn("Activating disks for %s" % instance.name)
8197 _StartInstanceDisks(self, instance, None)
8203 for idx, disk in enumerate(instance.disks):
8204 feedback_fn("Creating a snapshot of disk/%s on node %s" %
8207 # result.payload will be a snapshot of an lvm leaf of the one we
8209 result = self.rpc.call_blockdev_snapshot(src_node, disk)
8210 msg = result.fail_msg
8212 self.LogWarning("Could not snapshot disk/%s on node %s: %s",
8214 snap_disks.append(False)
8216 disk_id = (vgname, result.payload)
8217 new_dev = objects.Disk(dev_type=constants.LD_LV, size=disk.size,
8218 logical_id=disk_id, physical_id=disk_id,
8219 iv_name=disk.iv_name)
8220 snap_disks.append(new_dev)
8223 if self.op.shutdown and instance.admin_up:
8224 feedback_fn("Starting instance %s" % instance.name)
8225 result = self.rpc.call_instance_start(src_node, instance, None, None)
8226 msg = result.fail_msg
8228 _ShutdownInstanceDisks(self, instance)
8229 raise errors.OpExecError("Could not start instance: %s" % msg)
8231 # TODO: check for size
8233 cluster_name = self.cfg.GetClusterName()
8234 for idx, dev in enumerate(snap_disks):
8235 feedback_fn("Exporting snapshot %s from %s to %s" %
8236 (idx, src_node, dst_node.name))
8238 # FIXME: pass debug from opcode to backend
8239 result = self.rpc.call_snapshot_export(src_node, dev, dst_node.name,
8240 instance, cluster_name,
8241 idx, self.op.debug_level)
8242 msg = result.fail_msg
8244 self.LogWarning("Could not export disk/%s from node %s to"
8245 " node %s: %s", idx, src_node, dst_node.name, msg)
8246 dresults.append(False)
8248 dresults.append(True)
8249 msg = self.rpc.call_blockdev_remove(src_node, dev).fail_msg
8251 self.LogWarning("Could not remove snapshot for disk/%d from node"
8252 " %s: %s", idx, src_node, msg)
8254 dresults.append(False)
8256 feedback_fn("Finalizing export on %s" % dst_node.name)
8257 result = self.rpc.call_finalize_export(dst_node.name, instance,
8260 msg = result.fail_msg
8262 self.LogWarning("Could not finalize export for instance %s"
8263 " on node %s: %s", instance.name, dst_node.name, msg)
8268 feedback_fn("Deactivating disks for %s" % instance.name)
8269 _ShutdownInstanceDisks(self, instance)
8271 nodelist = self.cfg.GetNodeList()
8272 nodelist.remove(dst_node.name)
8274 # on one-node clusters nodelist will be empty after the removal
8275 # if we proceed the backup would be removed because OpQueryExports
8276 # substitutes an empty list with the full cluster node list.
8277 iname = instance.name
8279 feedback_fn("Removing old exports for instance %s" % iname)
8280 exportlist = self.rpc.call_export_list(nodelist)
8281 for node in exportlist:
8282 if exportlist[node].fail_msg:
8284 if iname in exportlist[node].payload:
8285 msg = self.rpc.call_export_remove(node, iname).fail_msg
8287 self.LogWarning("Could not remove older export for instance %s"
8288 " on node %s: %s", iname, node, msg)
8289 return fin_resu, dresults
8292 class LURemoveExport(NoHooksLU):
8293 """Remove exports related to the named instance.
8296 _OP_REQP = ["instance_name"]
8299 def ExpandNames(self):
8300 self.needed_locks = {}
8301 # We need all nodes to be locked in order for RemoveExport to work, but we
8302 # don't need to lock the instance itself, as nothing will happen to it (and
8303 # we can remove exports also for a removed instance)
8304 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
8306 def CheckPrereq(self):
8307 """Check prerequisites.
8311 def Exec(self, feedback_fn):
8312 """Remove any export.
8315 instance_name = self.cfg.ExpandInstanceName(self.op.instance_name)
8316 # If the instance was not found we'll try with the name that was passed in.
8317 # This will only work if it was an FQDN, though.
8319 if not instance_name:
8321 instance_name = self.op.instance_name
8323 locked_nodes = self.acquired_locks[locking.LEVEL_NODE]
8324 exportlist = self.rpc.call_export_list(locked_nodes)
8326 for node in exportlist:
8327 msg = exportlist[node].fail_msg
8329 self.LogWarning("Failed to query node %s (continuing): %s", node, msg)
8331 if instance_name in exportlist[node].payload:
8333 result = self.rpc.call_export_remove(node, instance_name)
8334 msg = result.fail_msg
8336 logging.error("Could not remove export for instance %s"
8337 " on node %s: %s", instance_name, node, msg)
8339 if fqdn_warn and not found:
8340 feedback_fn("Export not found. If trying to remove an export belonging"
8341 " to a deleted instance please use its Fully Qualified"
8345 class TagsLU(NoHooksLU): # pylint: disable-msg=W0223
8348 This is an abstract class which is the parent of all the other tags LUs.
8352 def ExpandNames(self):
8353 self.needed_locks = {}
8354 if self.op.kind == constants.TAG_NODE:
8355 self.op.name = _ExpandNodeName(self.cfg, self.op.name)
8356 self.needed_locks[locking.LEVEL_NODE] = self.op.name
8357 elif self.op.kind == constants.TAG_INSTANCE:
8358 self.op.name = _ExpandInstanceName(self.cfg, self.op.name)
8359 self.needed_locks[locking.LEVEL_INSTANCE] = self.op.name
8361 def CheckPrereq(self):
8362 """Check prerequisites.
8365 if self.op.kind == constants.TAG_CLUSTER:
8366 self.target = self.cfg.GetClusterInfo()
8367 elif self.op.kind == constants.TAG_NODE:
8368 self.target = self.cfg.GetNodeInfo(self.op.name)
8369 elif self.op.kind == constants.TAG_INSTANCE:
8370 self.target = self.cfg.GetInstanceInfo(self.op.name)
8372 raise errors.OpPrereqError("Wrong tag type requested (%s)" %
8373 str(self.op.kind), errors.ECODE_INVAL)
8376 class LUGetTags(TagsLU):
8377 """Returns the tags of a given object.
8380 _OP_REQP = ["kind", "name"]
8383 def Exec(self, feedback_fn):
8384 """Returns the tag list.
8387 return list(self.target.GetTags())
8390 class LUSearchTags(NoHooksLU):
8391 """Searches the tags for a given pattern.
8394 _OP_REQP = ["pattern"]
8397 def ExpandNames(self):
8398 self.needed_locks = {}
8400 def CheckPrereq(self):
8401 """Check prerequisites.
8403 This checks the pattern passed for validity by compiling it.
8407 self.re = re.compile(self.op.pattern)
8408 except re.error, err:
8409 raise errors.OpPrereqError("Invalid search pattern '%s': %s" %
8410 (self.op.pattern, err), errors.ECODE_INVAL)
8412 def Exec(self, feedback_fn):
8413 """Returns the tag list.
8417 tgts = [("/cluster", cfg.GetClusterInfo())]
8418 ilist = cfg.GetAllInstancesInfo().values()
8419 tgts.extend([("/instances/%s" % i.name, i) for i in ilist])
8420 nlist = cfg.GetAllNodesInfo().values()
8421 tgts.extend([("/nodes/%s" % n.name, n) for n in nlist])
8423 for path, target in tgts:
8424 for tag in target.GetTags():
8425 if self.re.search(tag):
8426 results.append((path, tag))
8430 class LUAddTags(TagsLU):
8431 """Sets a tag on a given object.
8434 _OP_REQP = ["kind", "name", "tags"]
8437 def CheckPrereq(self):
8438 """Check prerequisites.
8440 This checks the type and length of the tag name and value.
8443 TagsLU.CheckPrereq(self)
8444 for tag in self.op.tags:
8445 objects.TaggableObject.ValidateTag(tag)
8447 def Exec(self, feedback_fn):
8452 for tag in self.op.tags:
8453 self.target.AddTag(tag)
8454 except errors.TagError, err:
8455 raise errors.OpExecError("Error while setting tag: %s" % str(err))
8456 self.cfg.Update(self.target, feedback_fn)
8459 class LUDelTags(TagsLU):
8460 """Delete a list of tags from a given object.
8463 _OP_REQP = ["kind", "name", "tags"]
8466 def CheckPrereq(self):
8467 """Check prerequisites.
8469 This checks that we have the given tag.
8472 TagsLU.CheckPrereq(self)
8473 for tag in self.op.tags:
8474 objects.TaggableObject.ValidateTag(tag)
8475 del_tags = frozenset(self.op.tags)
8476 cur_tags = self.target.GetTags()
8477 if not del_tags <= cur_tags:
8478 diff_tags = del_tags - cur_tags
8479 diff_names = ["'%s'" % tag for tag in diff_tags]
8481 raise errors.OpPrereqError("Tag(s) %s not found" %
8482 (",".join(diff_names)), errors.ECODE_NOENT)
8484 def Exec(self, feedback_fn):
8485 """Remove the tag from the object.
8488 for tag in self.op.tags:
8489 self.target.RemoveTag(tag)
8490 self.cfg.Update(self.target, feedback_fn)
8493 class LUTestDelay(NoHooksLU):
8494 """Sleep for a specified amount of time.
8496 This LU sleeps on the master and/or nodes for a specified amount of
8500 _OP_REQP = ["duration", "on_master", "on_nodes"]
8503 def ExpandNames(self):
8504 """Expand names and set required locks.
8506 This expands the node list, if any.
8509 self.needed_locks = {}
8510 if self.op.on_nodes:
8511 # _GetWantedNodes can be used here, but is not always appropriate to use
8512 # this way in ExpandNames. Check LogicalUnit.ExpandNames docstring for
8514 self.op.on_nodes = _GetWantedNodes(self, self.op.on_nodes)
8515 self.needed_locks[locking.LEVEL_NODE] = self.op.on_nodes
8517 def CheckPrereq(self):
8518 """Check prerequisites.
8522 def Exec(self, feedback_fn):
8523 """Do the actual sleep.
8526 if self.op.on_master:
8527 if not utils.TestDelay(self.op.duration):
8528 raise errors.OpExecError("Error during master delay test")
8529 if self.op.on_nodes:
8530 result = self.rpc.call_test_delay(self.op.on_nodes, self.op.duration)
8531 for node, node_result in result.items():
8532 node_result.Raise("Failure during rpc call to node %s" % node)
8535 class IAllocator(object):
8536 """IAllocator framework.
8538 An IAllocator instance has three sets of attributes:
8539 - cfg that is needed to query the cluster
8540 - input data (all members of the _KEYS class attribute are required)
8541 - four buffer attributes (in|out_data|text), that represent the
8542 input (to the external script) in text and data structure format,
8543 and the output from it, again in two formats
8544 - the result variables from the script (success, info, nodes) for
8548 # pylint: disable-msg=R0902
8549 # lots of instance attributes
8551 "name", "mem_size", "disks", "disk_template",
8552 "os", "tags", "nics", "vcpus", "hypervisor",
8555 "name", "relocate_from",
8561 def __init__(self, cfg, rpc, mode, **kwargs):
8564 # init buffer variables
8565 self.in_text = self.out_text = self.in_data = self.out_data = None
8566 # init all input fields so that pylint is happy
8568 self.mem_size = self.disks = self.disk_template = None
8569 self.os = self.tags = self.nics = self.vcpus = None
8570 self.hypervisor = None
8571 self.relocate_from = None
8573 self.evac_nodes = None
8575 self.required_nodes = None
8576 # init result fields
8577 self.success = self.info = self.result = None
8578 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
8579 keyset = self._ALLO_KEYS
8580 fn = self._AddNewInstance
8581 elif self.mode == constants.IALLOCATOR_MODE_RELOC:
8582 keyset = self._RELO_KEYS
8583 fn = self._AddRelocateInstance
8584 elif self.mode == constants.IALLOCATOR_MODE_MEVAC:
8585 keyset = self._EVAC_KEYS
8586 fn = self._AddEvacuateNodes
8588 raise errors.ProgrammerError("Unknown mode '%s' passed to the"
8589 " IAllocator" % self.mode)
8591 if key not in keyset:
8592 raise errors.ProgrammerError("Invalid input parameter '%s' to"
8593 " IAllocator" % key)
8594 setattr(self, key, kwargs[key])
8597 if key not in kwargs:
8598 raise errors.ProgrammerError("Missing input parameter '%s' to"
8599 " IAllocator" % key)
8600 self._BuildInputData(fn)
8602 def _ComputeClusterData(self):
8603 """Compute the generic allocator input data.
8605 This is the data that is independent of the actual operation.
8609 cluster_info = cfg.GetClusterInfo()
8612 "version": constants.IALLOCATOR_VERSION,
8613 "cluster_name": cfg.GetClusterName(),
8614 "cluster_tags": list(cluster_info.GetTags()),
8615 "enabled_hypervisors": list(cluster_info.enabled_hypervisors),
8616 # we don't have job IDs
8618 iinfo = cfg.GetAllInstancesInfo().values()
8619 i_list = [(inst, cluster_info.FillBE(inst)) for inst in iinfo]
8623 node_list = cfg.GetNodeList()
8625 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
8626 hypervisor_name = self.hypervisor
8627 elif self.mode == constants.IALLOCATOR_MODE_RELOC:
8628 hypervisor_name = cfg.GetInstanceInfo(self.name).hypervisor
8629 elif self.mode == constants.IALLOCATOR_MODE_MEVAC:
8630 hypervisor_name = cluster_info.enabled_hypervisors[0]
8632 node_data = self.rpc.call_node_info(node_list, cfg.GetVGName(),
8635 self.rpc.call_all_instances_info(node_list,
8636 cluster_info.enabled_hypervisors)
8637 for nname, nresult in node_data.items():
8638 # first fill in static (config-based) values
8639 ninfo = cfg.GetNodeInfo(nname)
8641 "tags": list(ninfo.GetTags()),
8642 "primary_ip": ninfo.primary_ip,
8643 "secondary_ip": ninfo.secondary_ip,
8644 "offline": ninfo.offline,
8645 "drained": ninfo.drained,
8646 "master_candidate": ninfo.master_candidate,
8649 if not (ninfo.offline or ninfo.drained):
8650 nresult.Raise("Can't get data for node %s" % nname)
8651 node_iinfo[nname].Raise("Can't get node instance info from node %s" %
8653 remote_info = nresult.payload
8655 for attr in ['memory_total', 'memory_free', 'memory_dom0',
8656 'vg_size', 'vg_free', 'cpu_total']:
8657 if attr not in remote_info:
8658 raise errors.OpExecError("Node '%s' didn't return attribute"
8659 " '%s'" % (nname, attr))
8660 if not isinstance(remote_info[attr], int):
8661 raise errors.OpExecError("Node '%s' returned invalid value"
8663 (nname, attr, remote_info[attr]))
8664 # compute memory used by primary instances
8665 i_p_mem = i_p_up_mem = 0
8666 for iinfo, beinfo in i_list:
8667 if iinfo.primary_node == nname:
8668 i_p_mem += beinfo[constants.BE_MEMORY]
8669 if iinfo.name not in node_iinfo[nname].payload:
8672 i_used_mem = int(node_iinfo[nname].payload[iinfo.name]['memory'])
8673 i_mem_diff = beinfo[constants.BE_MEMORY] - i_used_mem
8674 remote_info['memory_free'] -= max(0, i_mem_diff)
8677 i_p_up_mem += beinfo[constants.BE_MEMORY]
8679 # compute memory used by instances
8681 "total_memory": remote_info['memory_total'],
8682 "reserved_memory": remote_info['memory_dom0'],
8683 "free_memory": remote_info['memory_free'],
8684 "total_disk": remote_info['vg_size'],
8685 "free_disk": remote_info['vg_free'],
8686 "total_cpus": remote_info['cpu_total'],
8687 "i_pri_memory": i_p_mem,
8688 "i_pri_up_memory": i_p_up_mem,
8692 node_results[nname] = pnr
8693 data["nodes"] = node_results
8697 for iinfo, beinfo in i_list:
8699 for nic in iinfo.nics:
8700 filled_params = objects.FillDict(
8701 cluster_info.nicparams[constants.PP_DEFAULT],
8703 nic_dict = {"mac": nic.mac,
8705 "mode": filled_params[constants.NIC_MODE],
8706 "link": filled_params[constants.NIC_LINK],
8708 if filled_params[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
8709 nic_dict["bridge"] = filled_params[constants.NIC_LINK]
8710 nic_data.append(nic_dict)
8712 "tags": list(iinfo.GetTags()),
8713 "admin_up": iinfo.admin_up,
8714 "vcpus": beinfo[constants.BE_VCPUS],
8715 "memory": beinfo[constants.BE_MEMORY],
8717 "nodes": [iinfo.primary_node] + list(iinfo.secondary_nodes),
8719 "disks": [{"size": dsk.size, "mode": dsk.mode} for dsk in iinfo.disks],
8720 "disk_template": iinfo.disk_template,
8721 "hypervisor": iinfo.hypervisor,
8723 pir["disk_space_total"] = _ComputeDiskSize(iinfo.disk_template,
8725 instance_data[iinfo.name] = pir
8727 data["instances"] = instance_data
8731 def _AddNewInstance(self):
8732 """Add new instance data to allocator structure.
8734 This in combination with _AllocatorGetClusterData will create the
8735 correct structure needed as input for the allocator.
8737 The checks for the completeness of the opcode must have already been
8741 disk_space = _ComputeDiskSize(self.disk_template, self.disks)
8743 if self.disk_template in constants.DTS_NET_MIRROR:
8744 self.required_nodes = 2
8746 self.required_nodes = 1
8749 "disk_template": self.disk_template,
8752 "vcpus": self.vcpus,
8753 "memory": self.mem_size,
8754 "disks": self.disks,
8755 "disk_space_total": disk_space,
8757 "required_nodes": self.required_nodes,
8761 def _AddRelocateInstance(self):
8762 """Add relocate instance data to allocator structure.
8764 This in combination with _IAllocatorGetClusterData will create the
8765 correct structure needed as input for the allocator.
8767 The checks for the completeness of the opcode must have already been
8771 instance = self.cfg.GetInstanceInfo(self.name)
8772 if instance is None:
8773 raise errors.ProgrammerError("Unknown instance '%s' passed to"
8774 " IAllocator" % self.name)
8776 if instance.disk_template not in constants.DTS_NET_MIRROR:
8777 raise errors.OpPrereqError("Can't relocate non-mirrored instances",
8780 if len(instance.secondary_nodes) != 1:
8781 raise errors.OpPrereqError("Instance has not exactly one secondary node",
8784 self.required_nodes = 1
8785 disk_sizes = [{'size': disk.size} for disk in instance.disks]
8786 disk_space = _ComputeDiskSize(instance.disk_template, disk_sizes)
8790 "disk_space_total": disk_space,
8791 "required_nodes": self.required_nodes,
8792 "relocate_from": self.relocate_from,
8796 def _AddEvacuateNodes(self):
8797 """Add evacuate nodes data to allocator structure.
8801 "evac_nodes": self.evac_nodes
8805 def _BuildInputData(self, fn):
8806 """Build input data structures.
8809 self._ComputeClusterData()
8812 request["type"] = self.mode
8813 self.in_data["request"] = request
8815 self.in_text = serializer.Dump(self.in_data)
8817 def Run(self, name, validate=True, call_fn=None):
8818 """Run an instance allocator and return the results.
8822 call_fn = self.rpc.call_iallocator_runner
8824 result = call_fn(self.cfg.GetMasterNode(), name, self.in_text)
8825 result.Raise("Failure while running the iallocator script")
8827 self.out_text = result.payload
8829 self._ValidateResult()
8831 def _ValidateResult(self):
8832 """Process the allocator results.
8834 This will process and if successful save the result in
8835 self.out_data and the other parameters.
8839 rdict = serializer.Load(self.out_text)
8840 except Exception, err:
8841 raise errors.OpExecError("Can't parse iallocator results: %s" % str(err))
8843 if not isinstance(rdict, dict):
8844 raise errors.OpExecError("Can't parse iallocator results: not a dict")
8846 # TODO: remove backwards compatiblity in later versions
8847 if "nodes" in rdict and "result" not in rdict:
8848 rdict["result"] = rdict["nodes"]
8851 for key in "success", "info", "result":
8852 if key not in rdict:
8853 raise errors.OpExecError("Can't parse iallocator results:"
8854 " missing key '%s'" % key)
8855 setattr(self, key, rdict[key])
8857 if not isinstance(rdict["result"], list):
8858 raise errors.OpExecError("Can't parse iallocator results: 'result' key"
8860 self.out_data = rdict
8863 class LUTestAllocator(NoHooksLU):
8864 """Run allocator tests.
8866 This LU runs the allocator tests
8869 _OP_REQP = ["direction", "mode", "name"]
8871 def CheckPrereq(self):
8872 """Check prerequisites.
8874 This checks the opcode parameters depending on the director and mode test.
8877 if self.op.mode == constants.IALLOCATOR_MODE_ALLOC:
8878 for attr in ["name", "mem_size", "disks", "disk_template",
8879 "os", "tags", "nics", "vcpus"]:
8880 if not hasattr(self.op, attr):
8881 raise errors.OpPrereqError("Missing attribute '%s' on opcode input" %
8882 attr, errors.ECODE_INVAL)
8883 iname = self.cfg.ExpandInstanceName(self.op.name)
8884 if iname is not None:
8885 raise errors.OpPrereqError("Instance '%s' already in the cluster" %
8886 iname, errors.ECODE_EXISTS)
8887 if not isinstance(self.op.nics, list):
8888 raise errors.OpPrereqError("Invalid parameter 'nics'",
8890 for row in self.op.nics:
8891 if (not isinstance(row, dict) or
8894 "bridge" not in row):
8895 raise errors.OpPrereqError("Invalid contents of the 'nics'"
8896 " parameter", errors.ECODE_INVAL)
8897 if not isinstance(self.op.disks, list):
8898 raise errors.OpPrereqError("Invalid parameter 'disks'",
8900 for row in self.op.disks:
8901 if (not isinstance(row, dict) or
8902 "size" not in row or
8903 not isinstance(row["size"], int) or
8904 "mode" not in row or
8905 row["mode"] not in ['r', 'w']):
8906 raise errors.OpPrereqError("Invalid contents of the 'disks'"
8907 " parameter", errors.ECODE_INVAL)
8908 if not hasattr(self.op, "hypervisor") or self.op.hypervisor is None:
8909 self.op.hypervisor = self.cfg.GetHypervisorType()
8910 elif self.op.mode == constants.IALLOCATOR_MODE_RELOC:
8911 if not hasattr(self.op, "name"):
8912 raise errors.OpPrereqError("Missing attribute 'name' on opcode input",
8914 fname = _ExpandInstanceName(self.cfg, self.op.name)
8915 self.op.name = fname
8916 self.relocate_from = self.cfg.GetInstanceInfo(fname).secondary_nodes
8917 elif self.op.mode == constants.IALLOCATOR_MODE_MEVAC:
8918 if not hasattr(self.op, "evac_nodes"):
8919 raise errors.OpPrereqError("Missing attribute 'evac_nodes' on"
8920 " opcode input", errors.ECODE_INVAL)
8922 raise errors.OpPrereqError("Invalid test allocator mode '%s'" %
8923 self.op.mode, errors.ECODE_INVAL)
8925 if self.op.direction == constants.IALLOCATOR_DIR_OUT:
8926 if not hasattr(self.op, "allocator") or self.op.allocator is None:
8927 raise errors.OpPrereqError("Missing allocator name",
8929 elif self.op.direction != constants.IALLOCATOR_DIR_IN:
8930 raise errors.OpPrereqError("Wrong allocator test '%s'" %
8931 self.op.direction, errors.ECODE_INVAL)
8933 def Exec(self, feedback_fn):
8934 """Run the allocator test.
8937 if self.op.mode == constants.IALLOCATOR_MODE_ALLOC:
8938 ial = IAllocator(self.cfg, self.rpc,
8941 mem_size=self.op.mem_size,
8942 disks=self.op.disks,
8943 disk_template=self.op.disk_template,
8947 vcpus=self.op.vcpus,
8948 hypervisor=self.op.hypervisor,
8950 elif self.op.mode == constants.IALLOCATOR_MODE_RELOC:
8951 ial = IAllocator(self.cfg, self.rpc,
8954 relocate_from=list(self.relocate_from),
8956 elif self.op.mode == constants.IALLOCATOR_MODE_MEVAC:
8957 ial = IAllocator(self.cfg, self.rpc,
8959 evac_nodes=self.op.evac_nodes)
8961 raise errors.ProgrammerError("Uncatched mode %s in"
8962 " LUTestAllocator.Exec", self.op.mode)
8964 if self.op.direction == constants.IALLOCATOR_DIR_IN:
8965 result = ial.in_text
8967 ial.Run(self.op.allocator, validate=False)
8968 result = ial.out_text