4 # Copyright (C) 2006, 2007, 2008 Google Inc.
6 # This program is free software; you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation; either version 2 of the License, or
9 # (at your option) any later version.
11 # This program is distributed in the hope that it will be useful, but
12 # WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 # General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with this program; if not, write to the Free Software
18 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
22 """Module implementing the master-side code."""
24 # pylint: disable-msg=W0613,W0201
36 from ganeti import ssh
37 from ganeti import utils
38 from ganeti import errors
39 from ganeti import hypervisor
40 from ganeti import locking
41 from ganeti import constants
42 from ganeti import objects
43 from ganeti import opcodes
44 from ganeti import serializer
45 from ganeti import ssconf
48 class LogicalUnit(object):
49 """Logical Unit base class.
51 Subclasses must follow these rules:
52 - implement ExpandNames
53 - implement CheckPrereq
55 - implement BuildHooksEnv
56 - redefine HPATH and HTYPE
57 - optionally redefine their run requirements:
58 REQ_BGL: the LU needs to hold the Big Ganeti Lock exclusively
60 Note that all commands require root permissions.
68 def __init__(self, processor, op, context, rpc):
69 """Constructor for LogicalUnit.
71 This needs to be overriden in derived classes in order to check op
77 self.cfg = context.cfg
78 self.context = context
80 # Dicts used to declare locking needs to mcpu
81 self.needed_locks = None
82 self.acquired_locks = {}
83 self.share_locks = dict(((i, 0) for i in locking.LEVELS))
85 self.remove_locks = {}
86 # Used to force good behavior when calling helper functions
87 self.recalculate_locks = {}
90 self.LogWarning = processor.LogWarning
91 self.LogInfo = processor.LogInfo
93 for attr_name in self._OP_REQP:
94 attr_val = getattr(op, attr_name, None)
96 raise errors.OpPrereqError("Required parameter '%s' missing" %
101 """Returns the SshRunner object
105 self.__ssh = ssh.SshRunner(self.cfg.GetClusterName())
108 ssh = property(fget=__GetSSH)
110 def CheckArguments(self):
111 """Check syntactic validity for the opcode arguments.
113 This method is for doing a simple syntactic check and ensure
114 validity of opcode parameters, without any cluster-related
115 checks. While the same can be accomplished in ExpandNames and/or
116 CheckPrereq, doing these separate is better because:
118 - ExpandNames is left as as purely a lock-related function
119 - CheckPrereq is run after we have aquired locks (and possible
122 The function is allowed to change the self.op attribute so that
123 later methods can no longer worry about missing parameters.
128 def ExpandNames(self):
129 """Expand names for this LU.
131 This method is called before starting to execute the opcode, and it should
132 update all the parameters of the opcode to their canonical form (e.g. a
133 short node name must be fully expanded after this method has successfully
134 completed). This way locking, hooks, logging, ecc. can work correctly.
136 LUs which implement this method must also populate the self.needed_locks
137 member, as a dict with lock levels as keys, and a list of needed lock names
140 - use an empty dict if you don't need any lock
141 - if you don't need any lock at a particular level omit that level
142 - don't put anything for the BGL level
143 - if you want all locks at a level use locking.ALL_SET as a value
145 If you need to share locks (rather than acquire them exclusively) at one
146 level you can modify self.share_locks, setting a true value (usually 1) for
147 that level. By default locks are not shared.
151 # Acquire all nodes and one instance
152 self.needed_locks = {
153 locking.LEVEL_NODE: locking.ALL_SET,
154 locking.LEVEL_INSTANCE: ['instance1.example.tld'],
156 # Acquire just two nodes
157 self.needed_locks = {
158 locking.LEVEL_NODE: ['node1.example.tld', 'node2.example.tld'],
161 self.needed_locks = {} # No, you can't leave it to the default value None
164 # The implementation of this method is mandatory only if the new LU is
165 # concurrent, so that old LUs don't need to be changed all at the same
168 self.needed_locks = {} # Exclusive LUs don't need locks.
170 raise NotImplementedError
172 def DeclareLocks(self, level):
173 """Declare LU locking needs for a level
175 While most LUs can just declare their locking needs at ExpandNames time,
176 sometimes there's the need to calculate some locks after having acquired
177 the ones before. This function is called just before acquiring locks at a
178 particular level, but after acquiring the ones at lower levels, and permits
179 such calculations. It can be used to modify self.needed_locks, and by
180 default it does nothing.
182 This function is only called if you have something already set in
183 self.needed_locks for the level.
185 @param level: Locking level which is going to be locked
186 @type level: member of ganeti.locking.LEVELS
190 def CheckPrereq(self):
191 """Check prerequisites for this LU.
193 This method should check that the prerequisites for the execution
194 of this LU are fulfilled. It can do internode communication, but
195 it should be idempotent - no cluster or system changes are
198 The method should raise errors.OpPrereqError in case something is
199 not fulfilled. Its return value is ignored.
201 This method should also update all the parameters of the opcode to
202 their canonical form if it hasn't been done by ExpandNames before.
205 raise NotImplementedError
207 def Exec(self, feedback_fn):
210 This method should implement the actual work. It should raise
211 errors.OpExecError for failures that are somewhat dealt with in
215 raise NotImplementedError
217 def BuildHooksEnv(self):
218 """Build hooks environment for this LU.
220 This method should return a three-node tuple consisting of: a dict
221 containing the environment that will be used for running the
222 specific hook for this LU, a list of node names on which the hook
223 should run before the execution, and a list of node names on which
224 the hook should run after the execution.
226 The keys of the dict must not have 'GANETI_' prefixed as this will
227 be handled in the hooks runner. Also note additional keys will be
228 added by the hooks runner. If the LU doesn't define any
229 environment, an empty dict (and not None) should be returned.
231 No nodes should be returned as an empty list (and not None).
233 Note that if the HPATH for a LU class is None, this function will
237 raise NotImplementedError
239 def HooksCallBack(self, phase, hook_results, feedback_fn, lu_result):
240 """Notify the LU about the results of its hooks.
242 This method is called every time a hooks phase is executed, and notifies
243 the Logical Unit about the hooks' result. The LU can then use it to alter
244 its result based on the hooks. By default the method does nothing and the
245 previous result is passed back unchanged but any LU can define it if it
246 wants to use the local cluster hook-scripts somehow.
248 @param phase: one of L{constants.HOOKS_PHASE_POST} or
249 L{constants.HOOKS_PHASE_PRE}; it denotes the hooks phase
250 @param hook_results: the results of the multi-node hooks rpc call
251 @param feedback_fn: function used send feedback back to the caller
252 @param lu_result: the previous Exec result this LU had, or None
254 @return: the new Exec result, based on the previous result
260 def _ExpandAndLockInstance(self):
261 """Helper function to expand and lock an instance.
263 Many LUs that work on an instance take its name in self.op.instance_name
264 and need to expand it and then declare the expanded name for locking. This
265 function does it, and then updates self.op.instance_name to the expanded
266 name. It also initializes needed_locks as a dict, if this hasn't been done
270 if self.needed_locks is None:
271 self.needed_locks = {}
273 assert locking.LEVEL_INSTANCE not in self.needed_locks, \
274 "_ExpandAndLockInstance called with instance-level locks set"
275 expanded_name = self.cfg.ExpandInstanceName(self.op.instance_name)
276 if expanded_name is None:
277 raise errors.OpPrereqError("Instance '%s' not known" %
278 self.op.instance_name)
279 self.needed_locks[locking.LEVEL_INSTANCE] = expanded_name
280 self.op.instance_name = expanded_name
282 def _LockInstancesNodes(self, primary_only=False):
283 """Helper function to declare instances' nodes for locking.
285 This function should be called after locking one or more instances to lock
286 their nodes. Its effect is populating self.needed_locks[locking.LEVEL_NODE]
287 with all primary or secondary nodes for instances already locked and
288 present in self.needed_locks[locking.LEVEL_INSTANCE].
290 It should be called from DeclareLocks, and for safety only works if
291 self.recalculate_locks[locking.LEVEL_NODE] is set.
293 In the future it may grow parameters to just lock some instance's nodes, or
294 to just lock primaries or secondary nodes, if needed.
296 If should be called in DeclareLocks in a way similar to::
298 if level == locking.LEVEL_NODE:
299 self._LockInstancesNodes()
301 @type primary_only: boolean
302 @param primary_only: only lock primary nodes of locked instances
305 assert locking.LEVEL_NODE in self.recalculate_locks, \
306 "_LockInstancesNodes helper function called with no nodes to recalculate"
308 # TODO: check if we're really been called with the instance locks held
310 # For now we'll replace self.needed_locks[locking.LEVEL_NODE], but in the
311 # future we might want to have different behaviors depending on the value
312 # of self.recalculate_locks[locking.LEVEL_NODE]
314 for instance_name in self.acquired_locks[locking.LEVEL_INSTANCE]:
315 instance = self.context.cfg.GetInstanceInfo(instance_name)
316 wanted_nodes.append(instance.primary_node)
318 wanted_nodes.extend(instance.secondary_nodes)
320 if self.recalculate_locks[locking.LEVEL_NODE] == constants.LOCKS_REPLACE:
321 self.needed_locks[locking.LEVEL_NODE] = wanted_nodes
322 elif self.recalculate_locks[locking.LEVEL_NODE] == constants.LOCKS_APPEND:
323 self.needed_locks[locking.LEVEL_NODE].extend(wanted_nodes)
325 del self.recalculate_locks[locking.LEVEL_NODE]
328 class NoHooksLU(LogicalUnit):
329 """Simple LU which runs no hooks.
331 This LU is intended as a parent for other LogicalUnits which will
332 run no hooks, in order to reduce duplicate code.
339 def _GetWantedNodes(lu, nodes):
340 """Returns list of checked and expanded node names.
342 @type lu: L{LogicalUnit}
343 @param lu: the logical unit on whose behalf we execute
345 @param nodes: list of node names or None for all nodes
347 @return: the list of nodes, sorted
348 @raise errors.OpProgrammerError: if the nodes parameter is wrong type
351 if not isinstance(nodes, list):
352 raise errors.OpPrereqError("Invalid argument type 'nodes'")
355 raise errors.ProgrammerError("_GetWantedNodes should only be called with a"
356 " non-empty list of nodes whose name is to be expanded.")
360 node = lu.cfg.ExpandNodeName(name)
362 raise errors.OpPrereqError("No such node name '%s'" % name)
365 return utils.NiceSort(wanted)
368 def _GetWantedInstances(lu, instances):
369 """Returns list of checked and expanded instance names.
371 @type lu: L{LogicalUnit}
372 @param lu: the logical unit on whose behalf we execute
373 @type instances: list
374 @param instances: list of instance names or None for all instances
376 @return: the list of instances, sorted
377 @raise errors.OpPrereqError: if the instances parameter is wrong type
378 @raise errors.OpPrereqError: if any of the passed instances is not found
381 if not isinstance(instances, list):
382 raise errors.OpPrereqError("Invalid argument type 'instances'")
387 for name in instances:
388 instance = lu.cfg.ExpandInstanceName(name)
390 raise errors.OpPrereqError("No such instance name '%s'" % name)
391 wanted.append(instance)
394 wanted = utils.NiceSort(lu.cfg.GetInstanceList())
398 def _CheckOutputFields(static, dynamic, selected):
399 """Checks whether all selected fields are valid.
401 @type static: L{utils.FieldSet}
402 @param static: static fields set
403 @type dynamic: L{utils.FieldSet}
404 @param dynamic: dynamic fields set
411 delta = f.NonMatching(selected)
413 raise errors.OpPrereqError("Unknown output fields selected: %s"
417 def _CheckBooleanOpField(op, name):
418 """Validates boolean opcode parameters.
420 This will ensure that an opcode parameter is either a boolean value,
421 or None (but that it always exists).
424 val = getattr(op, name, None)
425 if not (val is None or isinstance(val, bool)):
426 raise errors.OpPrereqError("Invalid boolean parameter '%s' (%s)" %
428 setattr(op, name, val)
431 def _CheckNodeOnline(lu, node):
432 """Ensure that a given node is online.
434 @param lu: the LU on behalf of which we make the check
435 @param node: the node to check
436 @raise errors.OpPrereqError: if the node is offline
439 if lu.cfg.GetNodeInfo(node).offline:
440 raise errors.OpPrereqError("Can't use offline node %s" % node)
443 def _CheckNodeNotDrained(lu, node):
444 """Ensure that a given node is not drained.
446 @param lu: the LU on behalf of which we make the check
447 @param node: the node to check
448 @raise errors.OpPrereqError: if the node is drained
451 if lu.cfg.GetNodeInfo(node).drained:
452 raise errors.OpPrereqError("Can't use drained node %s" % node)
455 def _BuildInstanceHookEnv(name, primary_node, secondary_nodes, os_type, status,
456 memory, vcpus, nics, disk_template, disks):
457 """Builds instance related env variables for hooks
459 This builds the hook environment from individual variables.
462 @param name: the name of the instance
463 @type primary_node: string
464 @param primary_node: the name of the instance's primary node
465 @type secondary_nodes: list
466 @param secondary_nodes: list of secondary nodes as strings
467 @type os_type: string
468 @param os_type: the name of the instance's OS
469 @type status: boolean
470 @param status: the should_run status of the instance
472 @param memory: the memory size of the instance
474 @param vcpus: the count of VCPUs the instance has
476 @param nics: list of tuples (ip, bridge, mac) representing
477 the NICs the instance has
478 @type disk_template: string
479 @param disk_template: the distk template of the instance
481 @param disks: the list of (size, mode) pairs
483 @return: the hook environment for this instance
492 "INSTANCE_NAME": name,
493 "INSTANCE_PRIMARY": primary_node,
494 "INSTANCE_SECONDARIES": " ".join(secondary_nodes),
495 "INSTANCE_OS_TYPE": os_type,
496 "INSTANCE_STATUS": str_status,
497 "INSTANCE_MEMORY": memory,
498 "INSTANCE_VCPUS": vcpus,
499 "INSTANCE_DISK_TEMPLATE": disk_template,
503 nic_count = len(nics)
504 for idx, (ip, mac, mode, link) in enumerate(nics):
507 env["INSTANCE_NIC%d_IP" % idx] = ip
508 env["INSTANCE_NIC%d_MAC" % idx] = mac
509 env["INSTANCE_NIC%d_MODE" % idx] = mode
510 env["INSTANCE_NIC%d_LINK" % idx] = link
511 if mode == constants.NIC_MODE_BRIDGED:
512 env["INSTANCE_NIC%d_BRIDGE" % idx] = link
516 env["INSTANCE_NIC_COUNT"] = nic_count
519 disk_count = len(disks)
520 for idx, (size, mode) in enumerate(disks):
521 env["INSTANCE_DISK%d_SIZE" % idx] = size
522 env["INSTANCE_DISK%d_MODE" % idx] = mode
526 env["INSTANCE_DISK_COUNT"] = disk_count
530 def _PreBuildNICHooksList(lu, nics):
531 """Build a list of nic information tuples.
533 This list is suitable to be passed to _BuildInstanceHookEnv.
535 @type lu: L{LogicalUnit}
536 @param lu: the logical unit on whose behalf we execute
537 @type nics: list of L{objects.NIC}
538 @param nics: list of nics to convert to hooks tuples
542 c_nicparams = lu.cfg.GetClusterInfo().nicparams[constants.PP_DEFAULT]
546 filled_params = objects.FillDict(c_nicparams, nic.nicparams)
547 mode = filled_params[constants.NIC_MODE]
548 link = filled_params[constants.NIC_LINK]
549 hooks_nics.append((ip, mac, mode, link))
552 def _BuildInstanceHookEnvByObject(lu, instance, override=None):
553 """Builds instance related env variables for hooks from an object.
555 @type lu: L{LogicalUnit}
556 @param lu: the logical unit on whose behalf we execute
557 @type instance: L{objects.Instance}
558 @param instance: the instance for which we should build the
561 @param override: dictionary with key/values that will override
564 @return: the hook environment dictionary
567 bep = lu.cfg.GetClusterInfo().FillBE(instance)
569 'name': instance.name,
570 'primary_node': instance.primary_node,
571 'secondary_nodes': instance.secondary_nodes,
572 'os_type': instance.os,
573 'status': instance.admin_up,
574 'memory': bep[constants.BE_MEMORY],
575 'vcpus': bep[constants.BE_VCPUS],
576 'nics': _PreBuildNICHooksList(lu, instance.nics),
577 'disk_template': instance.disk_template,
578 'disks': [(disk.size, disk.mode) for disk in instance.disks],
581 args.update(override)
582 return _BuildInstanceHookEnv(**args)
585 def _AdjustCandidatePool(lu):
586 """Adjust the candidate pool after node operations.
589 mod_list = lu.cfg.MaintainCandidatePool()
591 lu.LogInfo("Promoted nodes to master candidate role: %s",
592 ", ".join(node.name for node in mod_list))
593 for name in mod_list:
594 lu.context.ReaddNode(name)
595 mc_now, mc_max = lu.cfg.GetMasterCandidateStats()
597 lu.LogInfo("Note: more nodes are candidates (%d) than desired (%d)" %
601 def _CheckNicsBridgesExist(lu, target_nics, target_node,
602 profile=constants.PP_DEFAULT):
603 """Check that the brigdes needed by a list of nics exist.
606 c_nicparams = lu.cfg.GetClusterInfo().nicparams[profile]
607 paramslist = [objects.FillDict(c_nicparams, nic.nicparams)
608 for nic in target_nics]
609 brlist = [params[constants.NIC_LINK] for params in paramslist
610 if params[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED]
612 result = lu.rpc.call_bridges_exist(target_node, brlist)
613 msg = result.RemoteFailMsg()
615 raise errors.OpPrereqError("Error checking bridges on destination node"
616 " '%s': %s" % (target_node, msg))
619 def _CheckInstanceBridgesExist(lu, instance, node=None):
620 """Check that the brigdes needed by an instance exist.
624 node=instance.primary_node
625 _CheckNicsBridgesExist(lu, instance.nics, node)
628 class LUDestroyCluster(NoHooksLU):
629 """Logical unit for destroying the cluster.
634 def CheckPrereq(self):
635 """Check prerequisites.
637 This checks whether the cluster is empty.
639 Any errors are signalled by raising errors.OpPrereqError.
642 master = self.cfg.GetMasterNode()
644 nodelist = self.cfg.GetNodeList()
645 if len(nodelist) != 1 or nodelist[0] != master:
646 raise errors.OpPrereqError("There are still %d node(s) in"
647 " this cluster." % (len(nodelist) - 1))
648 instancelist = self.cfg.GetInstanceList()
650 raise errors.OpPrereqError("There are still %d instance(s) in"
651 " this cluster." % len(instancelist))
653 def Exec(self, feedback_fn):
654 """Destroys the cluster.
657 master = self.cfg.GetMasterNode()
658 result = self.rpc.call_node_stop_master(master, False)
659 msg = result.RemoteFailMsg()
661 raise errors.OpExecError("Could not disable the master role: %s" % msg)
662 priv_key, pub_key, _ = ssh.GetUserFiles(constants.GANETI_RUNAS)
663 utils.CreateBackup(priv_key)
664 utils.CreateBackup(pub_key)
668 class LUVerifyCluster(LogicalUnit):
669 """Verifies the cluster status.
672 HPATH = "cluster-verify"
673 HTYPE = constants.HTYPE_CLUSTER
674 _OP_REQP = ["skip_checks"]
677 def ExpandNames(self):
678 self.needed_locks = {
679 locking.LEVEL_NODE: locking.ALL_SET,
680 locking.LEVEL_INSTANCE: locking.ALL_SET,
682 self.share_locks = dict(((i, 1) for i in locking.LEVELS))
684 def _VerifyNode(self, nodeinfo, file_list, local_cksum,
685 node_result, feedback_fn, master_files,
687 """Run multiple tests against a node.
691 - compares ganeti version
692 - checks vg existance and size > 20G
693 - checks config file checksum
694 - checks ssh to other nodes
696 @type nodeinfo: L{objects.Node}
697 @param nodeinfo: the node to check
698 @param file_list: required list of files
699 @param local_cksum: dictionary of local files and their checksums
700 @param node_result: the results from the node
701 @param feedback_fn: function used to accumulate results
702 @param master_files: list of files that only masters should have
703 @param drbd_map: the useddrbd minors for this node, in
704 form of minor: (instance, must_exist) which correspond to instances
705 and their running status
706 @param vg_name: Ganeti Volume Group (result of self.cfg.GetVGName())
711 # main result, node_result should be a non-empty dict
712 if not node_result or not isinstance(node_result, dict):
713 feedback_fn(" - ERROR: unable to verify node %s." % (node,))
716 # compares ganeti version
717 local_version = constants.PROTOCOL_VERSION
718 remote_version = node_result.get('version', None)
719 if not (remote_version and isinstance(remote_version, (list, tuple)) and
720 len(remote_version) == 2):
721 feedback_fn(" - ERROR: connection to %s failed" % (node))
724 if local_version != remote_version[0]:
725 feedback_fn(" - ERROR: incompatible protocol versions: master %s,"
726 " node %s %s" % (local_version, node, remote_version[0]))
729 # node seems compatible, we can actually try to look into its results
733 # full package version
734 if constants.RELEASE_VERSION != remote_version[1]:
735 feedback_fn(" - WARNING: software version mismatch: master %s,"
737 (constants.RELEASE_VERSION, node, remote_version[1]))
739 # checks vg existence and size > 20G
740 if vg_name is not None:
741 vglist = node_result.get(constants.NV_VGLIST, None)
743 feedback_fn(" - ERROR: unable to check volume groups on node %s." %
747 vgstatus = utils.CheckVolumeGroupSize(vglist, vg_name,
748 constants.MIN_VG_SIZE)
750 feedback_fn(" - ERROR: %s on node %s" % (vgstatus, node))
753 # checks config file checksum
755 remote_cksum = node_result.get(constants.NV_FILELIST, None)
756 if not isinstance(remote_cksum, dict):
758 feedback_fn(" - ERROR: node hasn't returned file checksum data")
760 for file_name in file_list:
761 node_is_mc = nodeinfo.master_candidate
762 must_have_file = file_name not in master_files
763 if file_name not in remote_cksum:
764 if node_is_mc or must_have_file:
766 feedback_fn(" - ERROR: file '%s' missing" % file_name)
767 elif remote_cksum[file_name] != local_cksum[file_name]:
768 if node_is_mc or must_have_file:
770 feedback_fn(" - ERROR: file '%s' has wrong checksum" % file_name)
772 # not candidate and this is not a must-have file
774 feedback_fn(" - ERROR: non master-candidate has old/wrong file"
777 # all good, except non-master/non-must have combination
778 if not node_is_mc and not must_have_file:
779 feedback_fn(" - ERROR: file '%s' should not exist on non master"
780 " candidates" % file_name)
784 if constants.NV_NODELIST not in node_result:
786 feedback_fn(" - ERROR: node hasn't returned node ssh connectivity data")
788 if node_result[constants.NV_NODELIST]:
790 for node in node_result[constants.NV_NODELIST]:
791 feedback_fn(" - ERROR: ssh communication with node '%s': %s" %
792 (node, node_result[constants.NV_NODELIST][node]))
794 if constants.NV_NODENETTEST not in node_result:
796 feedback_fn(" - ERROR: node hasn't returned node tcp connectivity data")
798 if node_result[constants.NV_NODENETTEST]:
800 nlist = utils.NiceSort(node_result[constants.NV_NODENETTEST].keys())
802 feedback_fn(" - ERROR: tcp communication with node '%s': %s" %
803 (node, node_result[constants.NV_NODENETTEST][node]))
805 hyp_result = node_result.get(constants.NV_HYPERVISOR, None)
806 if isinstance(hyp_result, dict):
807 for hv_name, hv_result in hyp_result.iteritems():
808 if hv_result is not None:
809 feedback_fn(" - ERROR: hypervisor %s verify failure: '%s'" %
810 (hv_name, hv_result))
812 # check used drbd list
813 if vg_name is not None:
814 used_minors = node_result.get(constants.NV_DRBDLIST, [])
815 if not isinstance(used_minors, (tuple, list)):
816 feedback_fn(" - ERROR: cannot parse drbd status file: %s" %
819 for minor, (iname, must_exist) in drbd_map.items():
820 if minor not in used_minors and must_exist:
821 feedback_fn(" - ERROR: drbd minor %d of instance %s is"
822 " not active" % (minor, iname))
824 for minor in used_minors:
825 if minor not in drbd_map:
826 feedback_fn(" - ERROR: unallocated drbd minor %d is in use" %
832 def _VerifyInstance(self, instance, instanceconfig, node_vol_is,
833 node_instance, feedback_fn, n_offline):
834 """Verify an instance.
836 This function checks to see if the required block devices are
837 available on the instance's node.
842 node_current = instanceconfig.primary_node
845 instanceconfig.MapLVsByNode(node_vol_should)
847 for node in node_vol_should:
848 if node in n_offline:
849 # ignore missing volumes on offline nodes
851 for volume in node_vol_should[node]:
852 if node not in node_vol_is or volume not in node_vol_is[node]:
853 feedback_fn(" - ERROR: volume %s missing on node %s" %
857 if instanceconfig.admin_up:
858 if ((node_current not in node_instance or
859 not instance in node_instance[node_current]) and
860 node_current not in n_offline):
861 feedback_fn(" - ERROR: instance %s not running on node %s" %
862 (instance, node_current))
865 for node in node_instance:
866 if (not node == node_current):
867 if instance in node_instance[node]:
868 feedback_fn(" - ERROR: instance %s should not run on node %s" %
874 def _VerifyOrphanVolumes(self, node_vol_should, node_vol_is, feedback_fn):
875 """Verify if there are any unknown volumes in the cluster.
877 The .os, .swap and backup volumes are ignored. All other volumes are
883 for node in node_vol_is:
884 for volume in node_vol_is[node]:
885 if node not in node_vol_should or volume not in node_vol_should[node]:
886 feedback_fn(" - ERROR: volume %s on node %s should not exist" %
891 def _VerifyOrphanInstances(self, instancelist, node_instance, feedback_fn):
892 """Verify the list of running instances.
894 This checks what instances are running but unknown to the cluster.
898 for node in node_instance:
899 for runninginstance in node_instance[node]:
900 if runninginstance not in instancelist:
901 feedback_fn(" - ERROR: instance %s on node %s should not exist" %
902 (runninginstance, node))
906 def _VerifyNPlusOneMemory(self, node_info, instance_cfg, feedback_fn):
907 """Verify N+1 Memory Resilience.
909 Check that if one single node dies we can still start all the instances it
915 for node, nodeinfo in node_info.iteritems():
916 # This code checks that every node which is now listed as secondary has
917 # enough memory to host all instances it is supposed to should a single
918 # other node in the cluster fail.
919 # FIXME: not ready for failover to an arbitrary node
920 # FIXME: does not support file-backed instances
921 # WARNING: we currently take into account down instances as well as up
922 # ones, considering that even if they're down someone might want to start
923 # them even in the event of a node failure.
924 for prinode, instances in nodeinfo['sinst-by-pnode'].iteritems():
926 for instance in instances:
927 bep = self.cfg.GetClusterInfo().FillBE(instance_cfg[instance])
928 if bep[constants.BE_AUTO_BALANCE]:
929 needed_mem += bep[constants.BE_MEMORY]
930 if nodeinfo['mfree'] < needed_mem:
931 feedback_fn(" - ERROR: not enough memory on node %s to accomodate"
932 " failovers should node %s fail" % (node, prinode))
936 def CheckPrereq(self):
937 """Check prerequisites.
939 Transform the list of checks we're going to skip into a set and check that
940 all its members are valid.
943 self.skip_set = frozenset(self.op.skip_checks)
944 if not constants.VERIFY_OPTIONAL_CHECKS.issuperset(self.skip_set):
945 raise errors.OpPrereqError("Invalid checks to be skipped specified")
947 def BuildHooksEnv(self):
950 Cluster-Verify hooks just rone in the post phase and their failure makes
951 the output be logged in the verify output and the verification to fail.
954 all_nodes = self.cfg.GetNodeList()
956 "CLUSTER_TAGS": " ".join(self.cfg.GetClusterInfo().GetTags())
958 for node in self.cfg.GetAllNodesInfo().values():
959 env["NODE_TAGS_%s" % node.name] = " ".join(node.GetTags())
961 return env, [], all_nodes
963 def Exec(self, feedback_fn):
964 """Verify integrity of cluster, performing various test on nodes.
968 feedback_fn("* Verifying global settings")
969 for msg in self.cfg.VerifyConfig():
970 feedback_fn(" - ERROR: %s" % msg)
972 vg_name = self.cfg.GetVGName()
973 hypervisors = self.cfg.GetClusterInfo().enabled_hypervisors
974 nodelist = utils.NiceSort(self.cfg.GetNodeList())
975 nodeinfo = [self.cfg.GetNodeInfo(nname) for nname in nodelist]
976 instancelist = utils.NiceSort(self.cfg.GetInstanceList())
977 instanceinfo = dict((iname, self.cfg.GetInstanceInfo(iname))
978 for iname in instancelist)
979 i_non_redundant = [] # Non redundant instances
980 i_non_a_balanced = [] # Non auto-balanced instances
981 n_offline = [] # List of offline nodes
982 n_drained = [] # List of nodes being drained
988 # FIXME: verify OS list
990 master_files = [constants.CLUSTER_CONF_FILE]
992 file_names = ssconf.SimpleStore().GetFileList()
993 file_names.append(constants.SSL_CERT_FILE)
994 file_names.append(constants.RAPI_CERT_FILE)
995 file_names.extend(master_files)
997 local_checksums = utils.FingerprintFiles(file_names)
999 feedback_fn("* Gathering data (%d nodes)" % len(nodelist))
1000 node_verify_param = {
1001 constants.NV_FILELIST: file_names,
1002 constants.NV_NODELIST: [node.name for node in nodeinfo
1003 if not node.offline],
1004 constants.NV_HYPERVISOR: hypervisors,
1005 constants.NV_NODENETTEST: [(node.name, node.primary_ip,
1006 node.secondary_ip) for node in nodeinfo
1007 if not node.offline],
1008 constants.NV_INSTANCELIST: hypervisors,
1009 constants.NV_VERSION: None,
1010 constants.NV_HVINFO: self.cfg.GetHypervisorType(),
1012 if vg_name is not None:
1013 node_verify_param[constants.NV_VGLIST] = None
1014 node_verify_param[constants.NV_LVLIST] = vg_name
1015 node_verify_param[constants.NV_DRBDLIST] = None
1016 all_nvinfo = self.rpc.call_node_verify(nodelist, node_verify_param,
1017 self.cfg.GetClusterName())
1019 cluster = self.cfg.GetClusterInfo()
1020 master_node = self.cfg.GetMasterNode()
1021 all_drbd_map = self.cfg.ComputeDRBDMap()
1023 for node_i in nodeinfo:
1027 feedback_fn("* Skipping offline node %s" % (node,))
1028 n_offline.append(node)
1031 if node == master_node:
1033 elif node_i.master_candidate:
1034 ntype = "master candidate"
1035 elif node_i.drained:
1037 n_drained.append(node)
1040 feedback_fn("* Verifying node %s (%s)" % (node, ntype))
1042 msg = all_nvinfo[node].RemoteFailMsg()
1044 feedback_fn(" - ERROR: while contacting node %s: %s" % (node, msg))
1048 nresult = all_nvinfo[node].payload
1050 for minor, instance in all_drbd_map[node].items():
1051 if instance not in instanceinfo:
1052 feedback_fn(" - ERROR: ghost instance '%s' in temporary DRBD map" %
1054 # ghost instance should not be running, but otherwise we
1055 # don't give double warnings (both ghost instance and
1056 # unallocated minor in use)
1057 node_drbd[minor] = (instance, False)
1059 instance = instanceinfo[instance]
1060 node_drbd[minor] = (instance.name, instance.admin_up)
1061 result = self._VerifyNode(node_i, file_names, local_checksums,
1062 nresult, feedback_fn, master_files,
1066 lvdata = nresult.get(constants.NV_LVLIST, "Missing LV data")
1068 node_volume[node] = {}
1069 elif isinstance(lvdata, basestring):
1070 feedback_fn(" - ERROR: LVM problem on node %s: %s" %
1071 (node, utils.SafeEncode(lvdata)))
1073 node_volume[node] = {}
1074 elif not isinstance(lvdata, dict):
1075 feedback_fn(" - ERROR: connection to %s failed (lvlist)" % (node,))
1079 node_volume[node] = lvdata
1082 idata = nresult.get(constants.NV_INSTANCELIST, None)
1083 if not isinstance(idata, list):
1084 feedback_fn(" - ERROR: connection to %s failed (instancelist)" %
1089 node_instance[node] = idata
1092 nodeinfo = nresult.get(constants.NV_HVINFO, None)
1093 if not isinstance(nodeinfo, dict):
1094 feedback_fn(" - ERROR: connection to %s failed (hvinfo)" % (node,))
1100 "mfree": int(nodeinfo['memory_free']),
1103 # dictionary holding all instances this node is secondary for,
1104 # grouped by their primary node. Each key is a cluster node, and each
1105 # value is a list of instances which have the key as primary and the
1106 # current node as secondary. this is handy to calculate N+1 memory
1107 # availability if you can only failover from a primary to its
1109 "sinst-by-pnode": {},
1111 # FIXME: devise a free space model for file based instances as well
1112 if vg_name is not None:
1113 if (constants.NV_VGLIST not in nresult or
1114 vg_name not in nresult[constants.NV_VGLIST]):
1115 feedback_fn(" - ERROR: node %s didn't return data for the"
1116 " volume group '%s' - it is either missing or broken" %
1120 node_info[node]["dfree"] = int(nresult[constants.NV_VGLIST][vg_name])
1121 except (ValueError, KeyError):
1122 feedback_fn(" - ERROR: invalid nodeinfo value returned"
1123 " from node %s" % (node,))
1127 node_vol_should = {}
1129 for instance in instancelist:
1130 feedback_fn("* Verifying instance %s" % instance)
1131 inst_config = instanceinfo[instance]
1132 result = self._VerifyInstance(instance, inst_config, node_volume,
1133 node_instance, feedback_fn, n_offline)
1135 inst_nodes_offline = []
1137 inst_config.MapLVsByNode(node_vol_should)
1139 instance_cfg[instance] = inst_config
1141 pnode = inst_config.primary_node
1142 if pnode in node_info:
1143 node_info[pnode]['pinst'].append(instance)
1144 elif pnode not in n_offline:
1145 feedback_fn(" - ERROR: instance %s, connection to primary node"
1146 " %s failed" % (instance, pnode))
1149 if pnode in n_offline:
1150 inst_nodes_offline.append(pnode)
1152 # If the instance is non-redundant we cannot survive losing its primary
1153 # node, so we are not N+1 compliant. On the other hand we have no disk
1154 # templates with more than one secondary so that situation is not well
1156 # FIXME: does not support file-backed instances
1157 if len(inst_config.secondary_nodes) == 0:
1158 i_non_redundant.append(instance)
1159 elif len(inst_config.secondary_nodes) > 1:
1160 feedback_fn(" - WARNING: multiple secondaries for instance %s"
1163 if not cluster.FillBE(inst_config)[constants.BE_AUTO_BALANCE]:
1164 i_non_a_balanced.append(instance)
1166 for snode in inst_config.secondary_nodes:
1167 if snode in node_info:
1168 node_info[snode]['sinst'].append(instance)
1169 if pnode not in node_info[snode]['sinst-by-pnode']:
1170 node_info[snode]['sinst-by-pnode'][pnode] = []
1171 node_info[snode]['sinst-by-pnode'][pnode].append(instance)
1172 elif snode not in n_offline:
1173 feedback_fn(" - ERROR: instance %s, connection to secondary node"
1174 " %s failed" % (instance, snode))
1176 if snode in n_offline:
1177 inst_nodes_offline.append(snode)
1179 if inst_nodes_offline:
1180 # warn that the instance lives on offline nodes, and set bad=True
1181 feedback_fn(" - ERROR: instance lives on offline node(s) %s" %
1182 ", ".join(inst_nodes_offline))
1185 feedback_fn("* Verifying orphan volumes")
1186 result = self._VerifyOrphanVolumes(node_vol_should, node_volume,
1190 feedback_fn("* Verifying remaining instances")
1191 result = self._VerifyOrphanInstances(instancelist, node_instance,
1195 if constants.VERIFY_NPLUSONE_MEM not in self.skip_set:
1196 feedback_fn("* Verifying N+1 Memory redundancy")
1197 result = self._VerifyNPlusOneMemory(node_info, instance_cfg, feedback_fn)
1200 feedback_fn("* Other Notes")
1202 feedback_fn(" - NOTICE: %d non-redundant instance(s) found."
1203 % len(i_non_redundant))
1205 if i_non_a_balanced:
1206 feedback_fn(" - NOTICE: %d non-auto-balanced instance(s) found."
1207 % len(i_non_a_balanced))
1210 feedback_fn(" - NOTICE: %d offline node(s) found." % len(n_offline))
1213 feedback_fn(" - NOTICE: %d drained node(s) found." % len(n_drained))
1217 def HooksCallBack(self, phase, hooks_results, feedback_fn, lu_result):
1218 """Analize the post-hooks' result
1220 This method analyses the hook result, handles it, and sends some
1221 nicely-formatted feedback back to the user.
1223 @param phase: one of L{constants.HOOKS_PHASE_POST} or
1224 L{constants.HOOKS_PHASE_PRE}; it denotes the hooks phase
1225 @param hooks_results: the results of the multi-node hooks rpc call
1226 @param feedback_fn: function used send feedback back to the caller
1227 @param lu_result: previous Exec result
1228 @return: the new Exec result, based on the previous result
1232 # We only really run POST phase hooks, and are only interested in
1234 if phase == constants.HOOKS_PHASE_POST:
1235 # Used to change hooks' output to proper indentation
1236 indent_re = re.compile('^', re.M)
1237 feedback_fn("* Hooks Results")
1238 if not hooks_results:
1239 feedback_fn(" - ERROR: general communication failure")
1242 for node_name in hooks_results:
1243 show_node_header = True
1244 res = hooks_results[node_name]
1245 msg = res.RemoteFailMsg()
1248 # no need to warn or set fail return value
1250 feedback_fn(" Communication failure in hooks execution: %s" %
1254 for script, hkr, output in res.payload:
1255 if hkr == constants.HKR_FAIL:
1256 # The node header is only shown once, if there are
1257 # failing hooks on that node
1258 if show_node_header:
1259 feedback_fn(" Node %s:" % node_name)
1260 show_node_header = False
1261 feedback_fn(" ERROR: Script %s failed, output:" % script)
1262 output = indent_re.sub(' ', output)
1263 feedback_fn("%s" % output)
1269 class LUVerifyDisks(NoHooksLU):
1270 """Verifies the cluster disks status.
1276 def ExpandNames(self):
1277 self.needed_locks = {
1278 locking.LEVEL_NODE: locking.ALL_SET,
1279 locking.LEVEL_INSTANCE: locking.ALL_SET,
1281 self.share_locks = dict(((i, 1) for i in locking.LEVELS))
1283 def CheckPrereq(self):
1284 """Check prerequisites.
1286 This has no prerequisites.
1291 def Exec(self, feedback_fn):
1292 """Verify integrity of cluster disks.
1294 @rtype: tuple of three items
1295 @return: a tuple of (dict of node-to-node_error, list of instances
1296 which need activate-disks, dict of instance: (node, volume) for
1300 result = res_nodes, res_instances, res_missing = {}, [], {}
1302 vg_name = self.cfg.GetVGName()
1303 nodes = utils.NiceSort(self.cfg.GetNodeList())
1304 instances = [self.cfg.GetInstanceInfo(name)
1305 for name in self.cfg.GetInstanceList()]
1308 for inst in instances:
1310 if (not inst.admin_up or
1311 inst.disk_template not in constants.DTS_NET_MIRROR):
1313 inst.MapLVsByNode(inst_lvs)
1314 # transform { iname: {node: [vol,],},} to {(node, vol): iname}
1315 for node, vol_list in inst_lvs.iteritems():
1316 for vol in vol_list:
1317 nv_dict[(node, vol)] = inst
1322 node_lvs = self.rpc.call_volume_list(nodes, vg_name)
1327 node_res = node_lvs[node]
1328 if node_res.offline:
1330 msg = node_res.RemoteFailMsg()
1332 logging.warning("Error enumerating LVs on node %s: %s", node, msg)
1333 res_nodes[node] = msg
1336 lvs = node_res.payload
1337 for lv_name, (_, lv_inactive, lv_online) in lvs.items():
1338 inst = nv_dict.pop((node, lv_name), None)
1339 if (not lv_online and inst is not None
1340 and inst.name not in res_instances):
1341 res_instances.append(inst.name)
1343 # any leftover items in nv_dict are missing LVs, let's arrange the
1345 for key, inst in nv_dict.iteritems():
1346 if inst.name not in res_missing:
1347 res_missing[inst.name] = []
1348 res_missing[inst.name].append(key)
1353 class LURenameCluster(LogicalUnit):
1354 """Rename the cluster.
1357 HPATH = "cluster-rename"
1358 HTYPE = constants.HTYPE_CLUSTER
1361 def BuildHooksEnv(self):
1366 "OP_TARGET": self.cfg.GetClusterName(),
1367 "NEW_NAME": self.op.name,
1369 mn = self.cfg.GetMasterNode()
1370 return env, [mn], [mn]
1372 def CheckPrereq(self):
1373 """Verify that the passed name is a valid one.
1376 hostname = utils.HostInfo(self.op.name)
1378 new_name = hostname.name
1379 self.ip = new_ip = hostname.ip
1380 old_name = self.cfg.GetClusterName()
1381 old_ip = self.cfg.GetMasterIP()
1382 if new_name == old_name and new_ip == old_ip:
1383 raise errors.OpPrereqError("Neither the name nor the IP address of the"
1384 " cluster has changed")
1385 if new_ip != old_ip:
1386 if utils.TcpPing(new_ip, constants.DEFAULT_NODED_PORT):
1387 raise errors.OpPrereqError("The given cluster IP address (%s) is"
1388 " reachable on the network. Aborting." %
1391 self.op.name = new_name
1393 def Exec(self, feedback_fn):
1394 """Rename the cluster.
1397 clustername = self.op.name
1400 # shutdown the master IP
1401 master = self.cfg.GetMasterNode()
1402 result = self.rpc.call_node_stop_master(master, False)
1403 msg = result.RemoteFailMsg()
1405 raise errors.OpExecError("Could not disable the master role: %s" % msg)
1408 cluster = self.cfg.GetClusterInfo()
1409 cluster.cluster_name = clustername
1410 cluster.master_ip = ip
1411 self.cfg.Update(cluster)
1413 # update the known hosts file
1414 ssh.WriteKnownHostsFile(self.cfg, constants.SSH_KNOWN_HOSTS_FILE)
1415 node_list = self.cfg.GetNodeList()
1417 node_list.remove(master)
1420 result = self.rpc.call_upload_file(node_list,
1421 constants.SSH_KNOWN_HOSTS_FILE)
1422 for to_node, to_result in result.iteritems():
1423 msg = to_result.RemoteFailMsg()
1425 msg = ("Copy of file %s to node %s failed: %s" %
1426 (constants.SSH_KNOWN_HOSTS_FILE, to_node, msg))
1427 self.proc.LogWarning(msg)
1430 result = self.rpc.call_node_start_master(master, False)
1431 msg = result.RemoteFailMsg()
1433 self.LogWarning("Could not re-enable the master role on"
1434 " the master, please restart manually: %s", msg)
1437 def _RecursiveCheckIfLVMBased(disk):
1438 """Check if the given disk or its children are lvm-based.
1440 @type disk: L{objects.Disk}
1441 @param disk: the disk to check
1443 @return: boolean indicating whether a LD_LV dev_type was found or not
1447 for chdisk in disk.children:
1448 if _RecursiveCheckIfLVMBased(chdisk):
1450 return disk.dev_type == constants.LD_LV
1453 class LUSetClusterParams(LogicalUnit):
1454 """Change the parameters of the cluster.
1457 HPATH = "cluster-modify"
1458 HTYPE = constants.HTYPE_CLUSTER
1462 def CheckArguments(self):
1466 if not hasattr(self.op, "candidate_pool_size"):
1467 self.op.candidate_pool_size = None
1468 if self.op.candidate_pool_size is not None:
1470 self.op.candidate_pool_size = int(self.op.candidate_pool_size)
1471 except (ValueError, TypeError), err:
1472 raise errors.OpPrereqError("Invalid candidate_pool_size value: %s" %
1474 if self.op.candidate_pool_size < 1:
1475 raise errors.OpPrereqError("At least one master candidate needed")
1477 def ExpandNames(self):
1478 # FIXME: in the future maybe other cluster params won't require checking on
1479 # all nodes to be modified.
1480 self.needed_locks = {
1481 locking.LEVEL_NODE: locking.ALL_SET,
1483 self.share_locks[locking.LEVEL_NODE] = 1
1485 def BuildHooksEnv(self):
1490 "OP_TARGET": self.cfg.GetClusterName(),
1491 "NEW_VG_NAME": self.op.vg_name,
1493 mn = self.cfg.GetMasterNode()
1494 return env, [mn], [mn]
1496 def CheckPrereq(self):
1497 """Check prerequisites.
1499 This checks whether the given params don't conflict and
1500 if the given volume group is valid.
1503 if self.op.vg_name is not None and not self.op.vg_name:
1504 instances = self.cfg.GetAllInstancesInfo().values()
1505 for inst in instances:
1506 for disk in inst.disks:
1507 if _RecursiveCheckIfLVMBased(disk):
1508 raise errors.OpPrereqError("Cannot disable lvm storage while"
1509 " lvm-based instances exist")
1511 node_list = self.acquired_locks[locking.LEVEL_NODE]
1513 # if vg_name not None, checks given volume group on all nodes
1515 vglist = self.rpc.call_vg_list(node_list)
1516 for node in node_list:
1517 msg = vglist[node].RemoteFailMsg()
1519 # ignoring down node
1520 self.LogWarning("Error while gathering data on node %s"
1521 " (ignoring node): %s", node, msg)
1523 vgstatus = utils.CheckVolumeGroupSize(vglist[node].payload,
1525 constants.MIN_VG_SIZE)
1527 raise errors.OpPrereqError("Error on node '%s': %s" %
1530 self.cluster = cluster = self.cfg.GetClusterInfo()
1531 # validate params changes
1532 if self.op.beparams:
1533 utils.ForceDictType(self.op.beparams, constants.BES_PARAMETER_TYPES)
1534 self.new_beparams = objects.FillDict(
1535 cluster.beparams[constants.PP_DEFAULT], self.op.beparams)
1537 if self.op.nicparams:
1538 utils.ForceDictType(self.op.nicparams, constants.NICS_PARAMETER_TYPES)
1539 self.new_nicparams = objects.FillDict(
1540 cluster.nicparams[constants.PP_DEFAULT], self.op.nicparams)
1541 objects.NIC.CheckParameterSyntax(self.new_nicparams)
1543 # hypervisor list/parameters
1544 self.new_hvparams = objects.FillDict(cluster.hvparams, {})
1545 if self.op.hvparams:
1546 if not isinstance(self.op.hvparams, dict):
1547 raise errors.OpPrereqError("Invalid 'hvparams' parameter on input")
1548 for hv_name, hv_dict in self.op.hvparams.items():
1549 if hv_name not in self.new_hvparams:
1550 self.new_hvparams[hv_name] = hv_dict
1552 self.new_hvparams[hv_name].update(hv_dict)
1554 if self.op.enabled_hypervisors is not None:
1555 self.hv_list = self.op.enabled_hypervisors
1557 self.hv_list = cluster.enabled_hypervisors
1559 if self.op.hvparams or self.op.enabled_hypervisors is not None:
1560 # either the enabled list has changed, or the parameters have, validate
1561 for hv_name, hv_params in self.new_hvparams.items():
1562 if ((self.op.hvparams and hv_name in self.op.hvparams) or
1563 (self.op.enabled_hypervisors and
1564 hv_name in self.op.enabled_hypervisors)):
1565 # either this is a new hypervisor, or its parameters have changed
1566 hv_class = hypervisor.GetHypervisor(hv_name)
1567 utils.ForceDictType(hv_params, constants.HVS_PARAMETER_TYPES)
1568 hv_class.CheckParameterSyntax(hv_params)
1569 _CheckHVParams(self, node_list, hv_name, hv_params)
1571 def Exec(self, feedback_fn):
1572 """Change the parameters of the cluster.
1575 if self.op.vg_name is not None:
1576 new_volume = self.op.vg_name
1579 if new_volume != self.cfg.GetVGName():
1580 self.cfg.SetVGName(new_volume)
1582 feedback_fn("Cluster LVM configuration already in desired"
1583 " state, not changing")
1584 if self.op.hvparams:
1585 self.cluster.hvparams = self.new_hvparams
1586 if self.op.enabled_hypervisors is not None:
1587 self.cluster.enabled_hypervisors = self.op.enabled_hypervisors
1588 if self.op.beparams:
1589 self.cluster.beparams[constants.PP_DEFAULT] = self.new_beparams
1590 if self.op.nicparams:
1591 self.cluster.nicparams[constants.PP_DEFAULT] = self.new_nicparams
1593 if self.op.candidate_pool_size is not None:
1594 self.cluster.candidate_pool_size = self.op.candidate_pool_size
1596 self.cfg.Update(self.cluster)
1598 # we want to update nodes after the cluster so that if any errors
1599 # happen, we have recorded and saved the cluster info
1600 if self.op.candidate_pool_size is not None:
1601 _AdjustCandidatePool(self)
1604 def _RedistributeAncillaryFiles(lu, additional_nodes=None):
1605 """Distribute additional files which are part of the cluster configuration.
1607 ConfigWriter takes care of distributing the config and ssconf files, but
1608 there are more files which should be distributed to all nodes. This function
1609 makes sure those are copied.
1611 @param lu: calling logical unit
1612 @param additional_nodes: list of nodes not in the config to distribute to
1615 # 1. Gather target nodes
1616 myself = lu.cfg.GetNodeInfo(lu.cfg.GetMasterNode())
1617 dist_nodes = lu.cfg.GetNodeList()
1618 if additional_nodes is not None:
1619 dist_nodes.extend(additional_nodes)
1620 if myself.name in dist_nodes:
1621 dist_nodes.remove(myself.name)
1622 # 2. Gather files to distribute
1623 dist_files = set([constants.ETC_HOSTS,
1624 constants.SSH_KNOWN_HOSTS_FILE,
1625 constants.RAPI_CERT_FILE,
1626 constants.RAPI_USERS_FILE,
1629 enabled_hypervisors = lu.cfg.GetClusterInfo().enabled_hypervisors
1630 for hv_name in enabled_hypervisors:
1631 hv_class = hypervisor.GetHypervisor(hv_name)
1632 dist_files.update(hv_class.GetAncillaryFiles())
1634 # 3. Perform the files upload
1635 for fname in dist_files:
1636 if os.path.exists(fname):
1637 result = lu.rpc.call_upload_file(dist_nodes, fname)
1638 for to_node, to_result in result.items():
1639 msg = to_result.RemoteFailMsg()
1641 msg = ("Copy of file %s to node %s failed: %s" %
1642 (fname, to_node, msg))
1643 lu.proc.LogWarning(msg)
1646 class LURedistributeConfig(NoHooksLU):
1647 """Force the redistribution of cluster configuration.
1649 This is a very simple LU.
1655 def ExpandNames(self):
1656 self.needed_locks = {
1657 locking.LEVEL_NODE: locking.ALL_SET,
1659 self.share_locks[locking.LEVEL_NODE] = 1
1661 def CheckPrereq(self):
1662 """Check prerequisites.
1666 def Exec(self, feedback_fn):
1667 """Redistribute the configuration.
1670 self.cfg.Update(self.cfg.GetClusterInfo())
1671 _RedistributeAncillaryFiles(self)
1674 def _WaitForSync(lu, instance, oneshot=False, unlock=False):
1675 """Sleep and poll for an instance's disk to sync.
1678 if not instance.disks:
1682 lu.proc.LogInfo("Waiting for instance %s to sync disks." % instance.name)
1684 node = instance.primary_node
1686 for dev in instance.disks:
1687 lu.cfg.SetDiskID(dev, node)
1693 cumul_degraded = False
1694 rstats = lu.rpc.call_blockdev_getmirrorstatus(node, instance.disks)
1695 msg = rstats.RemoteFailMsg()
1697 lu.LogWarning("Can't get any data from node %s: %s", node, msg)
1700 raise errors.RemoteError("Can't contact node %s for mirror data,"
1701 " aborting." % node)
1704 rstats = rstats.payload
1706 for i, mstat in enumerate(rstats):
1708 lu.LogWarning("Can't compute data for node %s/%s",
1709 node, instance.disks[i].iv_name)
1711 # we ignore the ldisk parameter
1712 perc_done, est_time, is_degraded, _ = mstat
1713 cumul_degraded = cumul_degraded or (is_degraded and perc_done is None)
1714 if perc_done is not None:
1716 if est_time is not None:
1717 rem_time = "%d estimated seconds remaining" % est_time
1720 rem_time = "no time estimate"
1721 lu.proc.LogInfo("- device %s: %5.2f%% done, %s" %
1722 (instance.disks[i].iv_name, perc_done, rem_time))
1726 time.sleep(min(60, max_time))
1729 lu.proc.LogInfo("Instance %s's disks are in sync." % instance.name)
1730 return not cumul_degraded
1733 def _CheckDiskConsistency(lu, dev, node, on_primary, ldisk=False):
1734 """Check that mirrors are not degraded.
1736 The ldisk parameter, if True, will change the test from the
1737 is_degraded attribute (which represents overall non-ok status for
1738 the device(s)) to the ldisk (representing the local storage status).
1741 lu.cfg.SetDiskID(dev, node)
1748 if on_primary or dev.AssembleOnSecondary():
1749 rstats = lu.rpc.call_blockdev_find(node, dev)
1750 msg = rstats.RemoteFailMsg()
1752 lu.LogWarning("Can't find disk on node %s: %s", node, msg)
1754 elif not rstats.payload:
1755 lu.LogWarning("Can't find disk on node %s", node)
1758 result = result and (not rstats.payload[idx])
1760 for child in dev.children:
1761 result = result and _CheckDiskConsistency(lu, child, node, on_primary)
1766 class LUDiagnoseOS(NoHooksLU):
1767 """Logical unit for OS diagnose/query.
1770 _OP_REQP = ["output_fields", "names"]
1772 _FIELDS_STATIC = utils.FieldSet()
1773 _FIELDS_DYNAMIC = utils.FieldSet("name", "valid", "node_status")
1775 def ExpandNames(self):
1777 raise errors.OpPrereqError("Selective OS query not supported")
1779 _CheckOutputFields(static=self._FIELDS_STATIC,
1780 dynamic=self._FIELDS_DYNAMIC,
1781 selected=self.op.output_fields)
1783 # Lock all nodes, in shared mode
1784 # Temporary removal of locks, should be reverted later
1785 # TODO: reintroduce locks when they are lighter-weight
1786 self.needed_locks = {}
1787 #self.share_locks[locking.LEVEL_NODE] = 1
1788 #self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
1790 def CheckPrereq(self):
1791 """Check prerequisites.
1796 def _DiagnoseByOS(node_list, rlist):
1797 """Remaps a per-node return list into an a per-os per-node dictionary
1799 @param node_list: a list with the names of all nodes
1800 @param rlist: a map with node names as keys and OS objects as values
1803 @return: a dictionary with osnames as keys and as value another map, with
1804 nodes as keys and list of OS objects as values, eg::
1806 {"debian-etch": {"node1": [<object>,...],
1807 "node2": [<object>,]}
1812 # we build here the list of nodes that didn't fail the RPC (at RPC
1813 # level), so that nodes with a non-responding node daemon don't
1814 # make all OSes invalid
1815 good_nodes = [node_name for node_name in rlist
1816 if not rlist[node_name].RemoteFailMsg()]
1817 for node_name, nr in rlist.items():
1818 if nr.RemoteFailMsg() or not nr.payload:
1820 for os_serialized in nr.payload:
1821 os_obj = objects.OS.FromDict(os_serialized)
1822 if os_obj.name not in all_os:
1823 # build a list of nodes for this os containing empty lists
1824 # for each node in node_list
1825 all_os[os_obj.name] = {}
1826 for nname in good_nodes:
1827 all_os[os_obj.name][nname] = []
1828 all_os[os_obj.name][node_name].append(os_obj)
1831 def Exec(self, feedback_fn):
1832 """Compute the list of OSes.
1835 valid_nodes = [node for node in self.cfg.GetOnlineNodeList()]
1836 node_data = self.rpc.call_os_diagnose(valid_nodes)
1837 pol = self._DiagnoseByOS(valid_nodes, node_data)
1839 for os_name, os_data in pol.items():
1841 for field in self.op.output_fields:
1844 elif field == "valid":
1845 val = utils.all([osl and osl[0] for osl in os_data.values()])
1846 elif field == "node_status":
1848 for node_name, nos_list in os_data.iteritems():
1849 val[node_name] = [(v.status, v.path) for v in nos_list]
1851 raise errors.ParameterError(field)
1858 class LURemoveNode(LogicalUnit):
1859 """Logical unit for removing a node.
1862 HPATH = "node-remove"
1863 HTYPE = constants.HTYPE_NODE
1864 _OP_REQP = ["node_name"]
1866 def BuildHooksEnv(self):
1869 This doesn't run on the target node in the pre phase as a failed
1870 node would then be impossible to remove.
1874 "OP_TARGET": self.op.node_name,
1875 "NODE_NAME": self.op.node_name,
1877 all_nodes = self.cfg.GetNodeList()
1878 all_nodes.remove(self.op.node_name)
1879 return env, all_nodes, all_nodes
1881 def CheckPrereq(self):
1882 """Check prerequisites.
1885 - the node exists in the configuration
1886 - it does not have primary or secondary instances
1887 - it's not the master
1889 Any errors are signalled by raising errors.OpPrereqError.
1892 node = self.cfg.GetNodeInfo(self.cfg.ExpandNodeName(self.op.node_name))
1894 raise errors.OpPrereqError, ("Node '%s' is unknown." % self.op.node_name)
1896 instance_list = self.cfg.GetInstanceList()
1898 masternode = self.cfg.GetMasterNode()
1899 if node.name == masternode:
1900 raise errors.OpPrereqError("Node is the master node,"
1901 " you need to failover first.")
1903 for instance_name in instance_list:
1904 instance = self.cfg.GetInstanceInfo(instance_name)
1905 if node.name in instance.all_nodes:
1906 raise errors.OpPrereqError("Instance %s is still running on the node,"
1907 " please remove first." % instance_name)
1908 self.op.node_name = node.name
1911 def Exec(self, feedback_fn):
1912 """Removes the node from the cluster.
1916 logging.info("Stopping the node daemon and removing configs from node %s",
1919 self.context.RemoveNode(node.name)
1921 result = self.rpc.call_node_leave_cluster(node.name)
1922 msg = result.RemoteFailMsg()
1924 self.LogWarning("Errors encountered on the remote node while leaving"
1925 " the cluster: %s", msg)
1927 # Promote nodes to master candidate as needed
1928 _AdjustCandidatePool(self)
1931 class LUQueryNodes(NoHooksLU):
1932 """Logical unit for querying nodes.
1935 _OP_REQP = ["output_fields", "names", "use_locking"]
1937 _FIELDS_DYNAMIC = utils.FieldSet(
1939 "mtotal", "mnode", "mfree",
1941 "ctotal", "cnodes", "csockets",
1944 _FIELDS_STATIC = utils.FieldSet(
1945 "name", "pinst_cnt", "sinst_cnt",
1946 "pinst_list", "sinst_list",
1947 "pip", "sip", "tags",
1955 def ExpandNames(self):
1956 _CheckOutputFields(static=self._FIELDS_STATIC,
1957 dynamic=self._FIELDS_DYNAMIC,
1958 selected=self.op.output_fields)
1960 self.needed_locks = {}
1961 self.share_locks[locking.LEVEL_NODE] = 1
1964 self.wanted = _GetWantedNodes(self, self.op.names)
1966 self.wanted = locking.ALL_SET
1968 self.do_node_query = self._FIELDS_STATIC.NonMatching(self.op.output_fields)
1969 self.do_locking = self.do_node_query and self.op.use_locking
1971 # if we don't request only static fields, we need to lock the nodes
1972 self.needed_locks[locking.LEVEL_NODE] = self.wanted
1975 def CheckPrereq(self):
1976 """Check prerequisites.
1979 # The validation of the node list is done in the _GetWantedNodes,
1980 # if non empty, and if empty, there's no validation to do
1983 def Exec(self, feedback_fn):
1984 """Computes the list of nodes and their attributes.
1987 all_info = self.cfg.GetAllNodesInfo()
1989 nodenames = self.acquired_locks[locking.LEVEL_NODE]
1990 elif self.wanted != locking.ALL_SET:
1991 nodenames = self.wanted
1992 missing = set(nodenames).difference(all_info.keys())
1994 raise errors.OpExecError(
1995 "Some nodes were removed before retrieving their data: %s" % missing)
1997 nodenames = all_info.keys()
1999 nodenames = utils.NiceSort(nodenames)
2000 nodelist = [all_info[name] for name in nodenames]
2002 # begin data gathering
2004 if self.do_node_query:
2006 node_data = self.rpc.call_node_info(nodenames, self.cfg.GetVGName(),
2007 self.cfg.GetHypervisorType())
2008 for name in nodenames:
2009 nodeinfo = node_data[name]
2010 if not nodeinfo.RemoteFailMsg() and nodeinfo.payload:
2011 nodeinfo = nodeinfo.payload
2012 fn = utils.TryConvert
2014 "mtotal": fn(int, nodeinfo.get('memory_total', None)),
2015 "mnode": fn(int, nodeinfo.get('memory_dom0', None)),
2016 "mfree": fn(int, nodeinfo.get('memory_free', None)),
2017 "dtotal": fn(int, nodeinfo.get('vg_size', None)),
2018 "dfree": fn(int, nodeinfo.get('vg_free', None)),
2019 "ctotal": fn(int, nodeinfo.get('cpu_total', None)),
2020 "bootid": nodeinfo.get('bootid', None),
2021 "cnodes": fn(int, nodeinfo.get('cpu_nodes', None)),
2022 "csockets": fn(int, nodeinfo.get('cpu_sockets', None)),
2025 live_data[name] = {}
2027 live_data = dict.fromkeys(nodenames, {})
2029 node_to_primary = dict([(name, set()) for name in nodenames])
2030 node_to_secondary = dict([(name, set()) for name in nodenames])
2032 inst_fields = frozenset(("pinst_cnt", "pinst_list",
2033 "sinst_cnt", "sinst_list"))
2034 if inst_fields & frozenset(self.op.output_fields):
2035 instancelist = self.cfg.GetInstanceList()
2037 for instance_name in instancelist:
2038 inst = self.cfg.GetInstanceInfo(instance_name)
2039 if inst.primary_node in node_to_primary:
2040 node_to_primary[inst.primary_node].add(inst.name)
2041 for secnode in inst.secondary_nodes:
2042 if secnode in node_to_secondary:
2043 node_to_secondary[secnode].add(inst.name)
2045 master_node = self.cfg.GetMasterNode()
2047 # end data gathering
2050 for node in nodelist:
2052 for field in self.op.output_fields:
2055 elif field == "pinst_list":
2056 val = list(node_to_primary[node.name])
2057 elif field == "sinst_list":
2058 val = list(node_to_secondary[node.name])
2059 elif field == "pinst_cnt":
2060 val = len(node_to_primary[node.name])
2061 elif field == "sinst_cnt":
2062 val = len(node_to_secondary[node.name])
2063 elif field == "pip":
2064 val = node.primary_ip
2065 elif field == "sip":
2066 val = node.secondary_ip
2067 elif field == "tags":
2068 val = list(node.GetTags())
2069 elif field == "serial_no":
2070 val = node.serial_no
2071 elif field == "master_candidate":
2072 val = node.master_candidate
2073 elif field == "master":
2074 val = node.name == master_node
2075 elif field == "offline":
2077 elif field == "drained":
2079 elif self._FIELDS_DYNAMIC.Matches(field):
2080 val = live_data[node.name].get(field, None)
2082 raise errors.ParameterError(field)
2083 node_output.append(val)
2084 output.append(node_output)
2089 class LUQueryNodeVolumes(NoHooksLU):
2090 """Logical unit for getting volumes on node(s).
2093 _OP_REQP = ["nodes", "output_fields"]
2095 _FIELDS_DYNAMIC = utils.FieldSet("phys", "vg", "name", "size", "instance")
2096 _FIELDS_STATIC = utils.FieldSet("node")
2098 def ExpandNames(self):
2099 _CheckOutputFields(static=self._FIELDS_STATIC,
2100 dynamic=self._FIELDS_DYNAMIC,
2101 selected=self.op.output_fields)
2103 self.needed_locks = {}
2104 self.share_locks[locking.LEVEL_NODE] = 1
2105 if not self.op.nodes:
2106 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
2108 self.needed_locks[locking.LEVEL_NODE] = \
2109 _GetWantedNodes(self, self.op.nodes)
2111 def CheckPrereq(self):
2112 """Check prerequisites.
2114 This checks that the fields required are valid output fields.
2117 self.nodes = self.acquired_locks[locking.LEVEL_NODE]
2119 def Exec(self, feedback_fn):
2120 """Computes the list of nodes and their attributes.
2123 nodenames = self.nodes
2124 volumes = self.rpc.call_node_volumes(nodenames)
2126 ilist = [self.cfg.GetInstanceInfo(iname) for iname
2127 in self.cfg.GetInstanceList()]
2129 lv_by_node = dict([(inst, inst.MapLVsByNode()) for inst in ilist])
2132 for node in nodenames:
2133 nresult = volumes[node]
2136 msg = nresult.RemoteFailMsg()
2138 self.LogWarning("Can't compute volume data on node %s: %s", node, msg)
2141 node_vols = nresult.payload[:]
2142 node_vols.sort(key=lambda vol: vol['dev'])
2144 for vol in node_vols:
2146 for field in self.op.output_fields:
2149 elif field == "phys":
2153 elif field == "name":
2155 elif field == "size":
2156 val = int(float(vol['size']))
2157 elif field == "instance":
2159 if node not in lv_by_node[inst]:
2161 if vol['name'] in lv_by_node[inst][node]:
2167 raise errors.ParameterError(field)
2168 node_output.append(str(val))
2170 output.append(node_output)
2175 class LUAddNode(LogicalUnit):
2176 """Logical unit for adding node to the cluster.
2180 HTYPE = constants.HTYPE_NODE
2181 _OP_REQP = ["node_name"]
2183 def BuildHooksEnv(self):
2186 This will run on all nodes before, and on all nodes + the new node after.
2190 "OP_TARGET": self.op.node_name,
2191 "NODE_NAME": self.op.node_name,
2192 "NODE_PIP": self.op.primary_ip,
2193 "NODE_SIP": self.op.secondary_ip,
2195 nodes_0 = self.cfg.GetNodeList()
2196 nodes_1 = nodes_0 + [self.op.node_name, ]
2197 return env, nodes_0, nodes_1
2199 def CheckPrereq(self):
2200 """Check prerequisites.
2203 - the new node is not already in the config
2205 - its parameters (single/dual homed) matches the cluster
2207 Any errors are signalled by raising errors.OpPrereqError.
2210 node_name = self.op.node_name
2213 dns_data = utils.HostInfo(node_name)
2215 node = dns_data.name
2216 primary_ip = self.op.primary_ip = dns_data.ip
2217 secondary_ip = getattr(self.op, "secondary_ip", None)
2218 if secondary_ip is None:
2219 secondary_ip = primary_ip
2220 if not utils.IsValidIP(secondary_ip):
2221 raise errors.OpPrereqError("Invalid secondary IP given")
2222 self.op.secondary_ip = secondary_ip
2224 node_list = cfg.GetNodeList()
2225 if not self.op.readd and node in node_list:
2226 raise errors.OpPrereqError("Node %s is already in the configuration" %
2228 elif self.op.readd and node not in node_list:
2229 raise errors.OpPrereqError("Node %s is not in the configuration" % node)
2231 for existing_node_name in node_list:
2232 existing_node = cfg.GetNodeInfo(existing_node_name)
2234 if self.op.readd and node == existing_node_name:
2235 if (existing_node.primary_ip != primary_ip or
2236 existing_node.secondary_ip != secondary_ip):
2237 raise errors.OpPrereqError("Readded node doesn't have the same IP"
2238 " address configuration as before")
2241 if (existing_node.primary_ip == primary_ip or
2242 existing_node.secondary_ip == primary_ip or
2243 existing_node.primary_ip == secondary_ip or
2244 existing_node.secondary_ip == secondary_ip):
2245 raise errors.OpPrereqError("New node ip address(es) conflict with"
2246 " existing node %s" % existing_node.name)
2248 # check that the type of the node (single versus dual homed) is the
2249 # same as for the master
2250 myself = cfg.GetNodeInfo(self.cfg.GetMasterNode())
2251 master_singlehomed = myself.secondary_ip == myself.primary_ip
2252 newbie_singlehomed = secondary_ip == primary_ip
2253 if master_singlehomed != newbie_singlehomed:
2254 if master_singlehomed:
2255 raise errors.OpPrereqError("The master has no private ip but the"
2256 " new node has one")
2258 raise errors.OpPrereqError("The master has a private ip but the"
2259 " new node doesn't have one")
2261 # checks reachablity
2262 if not utils.TcpPing(primary_ip, constants.DEFAULT_NODED_PORT):
2263 raise errors.OpPrereqError("Node not reachable by ping")
2265 if not newbie_singlehomed:
2266 # check reachability from my secondary ip to newbie's secondary ip
2267 if not utils.TcpPing(secondary_ip, constants.DEFAULT_NODED_PORT,
2268 source=myself.secondary_ip):
2269 raise errors.OpPrereqError("Node secondary ip not reachable by TCP"
2270 " based ping to noded port")
2272 cp_size = self.cfg.GetClusterInfo().candidate_pool_size
2273 mc_now, _ = self.cfg.GetMasterCandidateStats()
2274 master_candidate = mc_now < cp_size
2276 self.new_node = objects.Node(name=node,
2277 primary_ip=primary_ip,
2278 secondary_ip=secondary_ip,
2279 master_candidate=master_candidate,
2280 offline=False, drained=False)
2282 def Exec(self, feedback_fn):
2283 """Adds the new node to the cluster.
2286 new_node = self.new_node
2287 node = new_node.name
2289 # check connectivity
2290 result = self.rpc.call_version([node])[node]
2291 msg = result.RemoteFailMsg()
2293 raise errors.OpExecError("Can't get version information from"
2294 " node %s: %s" % (node, msg))
2295 if constants.PROTOCOL_VERSION == result.payload:
2296 logging.info("Communication to node %s fine, sw version %s match",
2297 node, result.payload)
2299 raise errors.OpExecError("Version mismatch master version %s,"
2300 " node version %s" %
2301 (constants.PROTOCOL_VERSION, result.payload))
2304 logging.info("Copy ssh key to node %s", node)
2305 priv_key, pub_key, _ = ssh.GetUserFiles(constants.GANETI_RUNAS)
2307 keyfiles = [constants.SSH_HOST_DSA_PRIV, constants.SSH_HOST_DSA_PUB,
2308 constants.SSH_HOST_RSA_PRIV, constants.SSH_HOST_RSA_PUB,
2314 keyarray.append(f.read())
2318 result = self.rpc.call_node_add(node, keyarray[0], keyarray[1],
2320 keyarray[3], keyarray[4], keyarray[5])
2322 msg = result.RemoteFailMsg()
2324 raise errors.OpExecError("Cannot transfer ssh keys to the"
2325 " new node: %s" % msg)
2327 # Add node to our /etc/hosts, and add key to known_hosts
2328 if self.cfg.GetClusterInfo().modify_etc_hosts:
2329 utils.AddHostToEtcHosts(new_node.name)
2331 if new_node.secondary_ip != new_node.primary_ip:
2332 result = self.rpc.call_node_has_ip_address(new_node.name,
2333 new_node.secondary_ip)
2334 msg = result.RemoteFailMsg()
2336 raise errors.OpPrereqError("Failure checking secondary ip"
2337 " on node %s: %s" % (new_node.name, msg))
2338 if not result.payload:
2339 raise errors.OpExecError("Node claims it doesn't have the secondary ip"
2340 " you gave (%s). Please fix and re-run this"
2341 " command." % new_node.secondary_ip)
2343 node_verify_list = [self.cfg.GetMasterNode()]
2344 node_verify_param = {
2346 # TODO: do a node-net-test as well?
2349 result = self.rpc.call_node_verify(node_verify_list, node_verify_param,
2350 self.cfg.GetClusterName())
2351 for verifier in node_verify_list:
2352 msg = result[verifier].RemoteFailMsg()
2354 raise errors.OpExecError("Cannot communicate with node %s: %s" %
2356 nl_payload = result[verifier].payload['nodelist']
2358 for failed in nl_payload:
2359 feedback_fn("ssh/hostname verification failed %s -> %s" %
2360 (verifier, nl_payload[failed]))
2361 raise errors.OpExecError("ssh/hostname verification failed.")
2364 _RedistributeAncillaryFiles(self)
2365 self.context.ReaddNode(new_node)
2367 _RedistributeAncillaryFiles(self, additional_nodes=[node])
2368 self.context.AddNode(new_node)
2371 class LUSetNodeParams(LogicalUnit):
2372 """Modifies the parameters of a node.
2375 HPATH = "node-modify"
2376 HTYPE = constants.HTYPE_NODE
2377 _OP_REQP = ["node_name"]
2380 def CheckArguments(self):
2381 node_name = self.cfg.ExpandNodeName(self.op.node_name)
2382 if node_name is None:
2383 raise errors.OpPrereqError("Invalid node name '%s'" % self.op.node_name)
2384 self.op.node_name = node_name
2385 _CheckBooleanOpField(self.op, 'master_candidate')
2386 _CheckBooleanOpField(self.op, 'offline')
2387 _CheckBooleanOpField(self.op, 'drained')
2388 all_mods = [self.op.offline, self.op.master_candidate, self.op.drained]
2389 if all_mods.count(None) == 3:
2390 raise errors.OpPrereqError("Please pass at least one modification")
2391 if all_mods.count(True) > 1:
2392 raise errors.OpPrereqError("Can't set the node into more than one"
2393 " state at the same time")
2395 def ExpandNames(self):
2396 self.needed_locks = {locking.LEVEL_NODE: self.op.node_name}
2398 def BuildHooksEnv(self):
2401 This runs on the master node.
2405 "OP_TARGET": self.op.node_name,
2406 "MASTER_CANDIDATE": str(self.op.master_candidate),
2407 "OFFLINE": str(self.op.offline),
2408 "DRAINED": str(self.op.drained),
2410 nl = [self.cfg.GetMasterNode(),
2414 def CheckPrereq(self):
2415 """Check prerequisites.
2417 This only checks the instance list against the existing names.
2420 node = self.node = self.cfg.GetNodeInfo(self.op.node_name)
2422 if ((self.op.master_candidate == False or self.op.offline == True or
2423 self.op.drained == True) and node.master_candidate):
2424 # we will demote the node from master_candidate
2425 if self.op.node_name == self.cfg.GetMasterNode():
2426 raise errors.OpPrereqError("The master node has to be a"
2427 " master candidate, online and not drained")
2428 cp_size = self.cfg.GetClusterInfo().candidate_pool_size
2429 num_candidates, _ = self.cfg.GetMasterCandidateStats()
2430 if num_candidates <= cp_size:
2431 msg = ("Not enough master candidates (desired"
2432 " %d, new value will be %d)" % (cp_size, num_candidates-1))
2434 self.LogWarning(msg)
2436 raise errors.OpPrereqError(msg)
2438 if (self.op.master_candidate == True and
2439 ((node.offline and not self.op.offline == False) or
2440 (node.drained and not self.op.drained == False))):
2441 raise errors.OpPrereqError("Node '%s' is offline or drained, can't set"
2442 " to master_candidate" % node.name)
2446 def Exec(self, feedback_fn):
2455 if self.op.offline is not None:
2456 node.offline = self.op.offline
2457 result.append(("offline", str(self.op.offline)))
2458 if self.op.offline == True:
2459 if node.master_candidate:
2460 node.master_candidate = False
2462 result.append(("master_candidate", "auto-demotion due to offline"))
2464 node.drained = False
2465 result.append(("drained", "clear drained status due to offline"))
2467 if self.op.master_candidate is not None:
2468 node.master_candidate = self.op.master_candidate
2470 result.append(("master_candidate", str(self.op.master_candidate)))
2471 if self.op.master_candidate == False:
2472 rrc = self.rpc.call_node_demote_from_mc(node.name)
2473 msg = rrc.RemoteFailMsg()
2475 self.LogWarning("Node failed to demote itself: %s" % msg)
2477 if self.op.drained is not None:
2478 node.drained = self.op.drained
2479 result.append(("drained", str(self.op.drained)))
2480 if self.op.drained == True:
2481 if node.master_candidate:
2482 node.master_candidate = False
2484 result.append(("master_candidate", "auto-demotion due to drain"))
2486 node.offline = False
2487 result.append(("offline", "clear offline status due to drain"))
2489 # this will trigger configuration file update, if needed
2490 self.cfg.Update(node)
2491 # this will trigger job queue propagation or cleanup
2493 self.context.ReaddNode(node)
2498 class LUPowercycleNode(NoHooksLU):
2499 """Powercycles a node.
2502 _OP_REQP = ["node_name", "force"]
2505 def CheckArguments(self):
2506 node_name = self.cfg.ExpandNodeName(self.op.node_name)
2507 if node_name is None:
2508 raise errors.OpPrereqError("Invalid node name '%s'" % self.op.node_name)
2509 self.op.node_name = node_name
2510 if node_name == self.cfg.GetMasterNode() and not self.op.force:
2511 raise errors.OpPrereqError("The node is the master and the force"
2512 " parameter was not set")
2514 def ExpandNames(self):
2515 """Locking for PowercycleNode.
2517 This is a last-resource option and shouldn't block on other
2518 jobs. Therefore, we grab no locks.
2521 self.needed_locks = {}
2523 def CheckPrereq(self):
2524 """Check prerequisites.
2526 This LU has no prereqs.
2531 def Exec(self, feedback_fn):
2535 result = self.rpc.call_node_powercycle(self.op.node_name,
2536 self.cfg.GetHypervisorType())
2537 msg = result.RemoteFailMsg()
2539 raise errors.OpExecError("Failed to schedule the reboot: %s" % msg)
2540 return result.payload
2543 class LUQueryClusterInfo(NoHooksLU):
2544 """Query cluster configuration.
2550 def ExpandNames(self):
2551 self.needed_locks = {}
2553 def CheckPrereq(self):
2554 """No prerequsites needed for this LU.
2559 def Exec(self, feedback_fn):
2560 """Return cluster config.
2563 cluster = self.cfg.GetClusterInfo()
2565 "software_version": constants.RELEASE_VERSION,
2566 "protocol_version": constants.PROTOCOL_VERSION,
2567 "config_version": constants.CONFIG_VERSION,
2568 "os_api_version": constants.OS_API_VERSION,
2569 "export_version": constants.EXPORT_VERSION,
2570 "architecture": (platform.architecture()[0], platform.machine()),
2571 "name": cluster.cluster_name,
2572 "master": cluster.master_node,
2573 "default_hypervisor": cluster.default_hypervisor,
2574 "enabled_hypervisors": cluster.enabled_hypervisors,
2575 "hvparams": dict([(hypervisor, cluster.hvparams[hypervisor])
2576 for hypervisor in cluster.enabled_hypervisors]),
2577 "beparams": cluster.beparams,
2578 "nicparams": cluster.nicparams,
2579 "candidate_pool_size": cluster.candidate_pool_size,
2580 "master_netdev": cluster.master_netdev,
2581 "volume_group_name": cluster.volume_group_name,
2582 "file_storage_dir": cluster.file_storage_dir,
2588 class LUQueryConfigValues(NoHooksLU):
2589 """Return configuration values.
2594 _FIELDS_DYNAMIC = utils.FieldSet()
2595 _FIELDS_STATIC = utils.FieldSet("cluster_name", "master_node", "drain_flag")
2597 def ExpandNames(self):
2598 self.needed_locks = {}
2600 _CheckOutputFields(static=self._FIELDS_STATIC,
2601 dynamic=self._FIELDS_DYNAMIC,
2602 selected=self.op.output_fields)
2604 def CheckPrereq(self):
2605 """No prerequisites.
2610 def Exec(self, feedback_fn):
2611 """Dump a representation of the cluster config to the standard output.
2615 for field in self.op.output_fields:
2616 if field == "cluster_name":
2617 entry = self.cfg.GetClusterName()
2618 elif field == "master_node":
2619 entry = self.cfg.GetMasterNode()
2620 elif field == "drain_flag":
2621 entry = os.path.exists(constants.JOB_QUEUE_DRAIN_FILE)
2623 raise errors.ParameterError(field)
2624 values.append(entry)
2628 class LUActivateInstanceDisks(NoHooksLU):
2629 """Bring up an instance's disks.
2632 _OP_REQP = ["instance_name"]
2635 def ExpandNames(self):
2636 self._ExpandAndLockInstance()
2637 self.needed_locks[locking.LEVEL_NODE] = []
2638 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
2640 def DeclareLocks(self, level):
2641 if level == locking.LEVEL_NODE:
2642 self._LockInstancesNodes()
2644 def CheckPrereq(self):
2645 """Check prerequisites.
2647 This checks that the instance is in the cluster.
2650 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2651 assert self.instance is not None, \
2652 "Cannot retrieve locked instance %s" % self.op.instance_name
2653 _CheckNodeOnline(self, self.instance.primary_node)
2655 def Exec(self, feedback_fn):
2656 """Activate the disks.
2659 disks_ok, disks_info = _AssembleInstanceDisks(self, self.instance)
2661 raise errors.OpExecError("Cannot activate block devices")
2666 def _AssembleInstanceDisks(lu, instance, ignore_secondaries=False):
2667 """Prepare the block devices for an instance.
2669 This sets up the block devices on all nodes.
2671 @type lu: L{LogicalUnit}
2672 @param lu: the logical unit on whose behalf we execute
2673 @type instance: L{objects.Instance}
2674 @param instance: the instance for whose disks we assemble
2675 @type ignore_secondaries: boolean
2676 @param ignore_secondaries: if true, errors on secondary nodes
2677 won't result in an error return from the function
2678 @return: False if the operation failed, otherwise a list of
2679 (host, instance_visible_name, node_visible_name)
2680 with the mapping from node devices to instance devices
2685 iname = instance.name
2686 # With the two passes mechanism we try to reduce the window of
2687 # opportunity for the race condition of switching DRBD to primary
2688 # before handshaking occured, but we do not eliminate it
2690 # The proper fix would be to wait (with some limits) until the
2691 # connection has been made and drbd transitions from WFConnection
2692 # into any other network-connected state (Connected, SyncTarget,
2695 # 1st pass, assemble on all nodes in secondary mode
2696 for inst_disk in instance.disks:
2697 for node, node_disk in inst_disk.ComputeNodeTree(instance.primary_node):
2698 lu.cfg.SetDiskID(node_disk, node)
2699 result = lu.rpc.call_blockdev_assemble(node, node_disk, iname, False)
2700 msg = result.RemoteFailMsg()
2702 lu.proc.LogWarning("Could not prepare block device %s on node %s"
2703 " (is_primary=False, pass=1): %s",
2704 inst_disk.iv_name, node, msg)
2705 if not ignore_secondaries:
2708 # FIXME: race condition on drbd migration to primary
2710 # 2nd pass, do only the primary node
2711 for inst_disk in instance.disks:
2712 for node, node_disk in inst_disk.ComputeNodeTree(instance.primary_node):
2713 if node != instance.primary_node:
2715 lu.cfg.SetDiskID(node_disk, node)
2716 result = lu.rpc.call_blockdev_assemble(node, node_disk, iname, True)
2717 msg = result.RemoteFailMsg()
2719 lu.proc.LogWarning("Could not prepare block device %s on node %s"
2720 " (is_primary=True, pass=2): %s",
2721 inst_disk.iv_name, node, msg)
2723 device_info.append((instance.primary_node, inst_disk.iv_name,
2726 # leave the disks configured for the primary node
2727 # this is a workaround that would be fixed better by
2728 # improving the logical/physical id handling
2729 for disk in instance.disks:
2730 lu.cfg.SetDiskID(disk, instance.primary_node)
2732 return disks_ok, device_info
2735 def _StartInstanceDisks(lu, instance, force):
2736 """Start the disks of an instance.
2739 disks_ok, dummy = _AssembleInstanceDisks(lu, instance,
2740 ignore_secondaries=force)
2742 _ShutdownInstanceDisks(lu, instance)
2743 if force is not None and not force:
2744 lu.proc.LogWarning("", hint="If the message above refers to a"
2746 " you can retry the operation using '--force'.")
2747 raise errors.OpExecError("Disk consistency error")
2750 class LUDeactivateInstanceDisks(NoHooksLU):
2751 """Shutdown an instance's disks.
2754 _OP_REQP = ["instance_name"]
2757 def ExpandNames(self):
2758 self._ExpandAndLockInstance()
2759 self.needed_locks[locking.LEVEL_NODE] = []
2760 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
2762 def DeclareLocks(self, level):
2763 if level == locking.LEVEL_NODE:
2764 self._LockInstancesNodes()
2766 def CheckPrereq(self):
2767 """Check prerequisites.
2769 This checks that the instance is in the cluster.
2772 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2773 assert self.instance is not None, \
2774 "Cannot retrieve locked instance %s" % self.op.instance_name
2776 def Exec(self, feedback_fn):
2777 """Deactivate the disks
2780 instance = self.instance
2781 _SafeShutdownInstanceDisks(self, instance)
2784 def _SafeShutdownInstanceDisks(lu, instance):
2785 """Shutdown block devices of an instance.
2787 This function checks if an instance is running, before calling
2788 _ShutdownInstanceDisks.
2791 pnode = instance.primary_node
2792 ins_l = lu.rpc.call_instance_list([pnode], [instance.hypervisor])
2793 ins_l = ins_l[pnode]
2794 msg = ins_l.RemoteFailMsg()
2796 raise errors.OpExecError("Can't contact node %s: %s" % (pnode, msg))
2798 if instance.name in ins_l.payload:
2799 raise errors.OpExecError("Instance is running, can't shutdown"
2802 _ShutdownInstanceDisks(lu, instance)
2805 def _ShutdownInstanceDisks(lu, instance, ignore_primary=False):
2806 """Shutdown block devices of an instance.
2808 This does the shutdown on all nodes of the instance.
2810 If the ignore_primary is false, errors on the primary node are
2815 for disk in instance.disks:
2816 for node, top_disk in disk.ComputeNodeTree(instance.primary_node):
2817 lu.cfg.SetDiskID(top_disk, node)
2818 result = lu.rpc.call_blockdev_shutdown(node, top_disk)
2819 msg = result.RemoteFailMsg()
2821 lu.LogWarning("Could not shutdown block device %s on node %s: %s",
2822 disk.iv_name, node, msg)
2823 if not ignore_primary or node != instance.primary_node:
2828 def _CheckNodeFreeMemory(lu, node, reason, requested, hypervisor_name):
2829 """Checks if a node has enough free memory.
2831 This function check if a given node has the needed amount of free
2832 memory. In case the node has less memory or we cannot get the
2833 information from the node, this function raise an OpPrereqError
2836 @type lu: C{LogicalUnit}
2837 @param lu: a logical unit from which we get configuration data
2839 @param node: the node to check
2840 @type reason: C{str}
2841 @param reason: string to use in the error message
2842 @type requested: C{int}
2843 @param requested: the amount of memory in MiB to check for
2844 @type hypervisor_name: C{str}
2845 @param hypervisor_name: the hypervisor to ask for memory stats
2846 @raise errors.OpPrereqError: if the node doesn't have enough memory, or
2847 we cannot check the node
2850 nodeinfo = lu.rpc.call_node_info([node], lu.cfg.GetVGName(), hypervisor_name)
2851 msg = nodeinfo[node].RemoteFailMsg()
2853 raise errors.OpPrereqError("Can't get data from node %s: %s" % (node, msg))
2854 free_mem = nodeinfo[node].payload.get('memory_free', None)
2855 if not isinstance(free_mem, int):
2856 raise errors.OpPrereqError("Can't compute free memory on node %s, result"
2857 " was '%s'" % (node, free_mem))
2858 if requested > free_mem:
2859 raise errors.OpPrereqError("Not enough memory on node %s for %s:"
2860 " needed %s MiB, available %s MiB" %
2861 (node, reason, requested, free_mem))
2864 class LUStartupInstance(LogicalUnit):
2865 """Starts an instance.
2868 HPATH = "instance-start"
2869 HTYPE = constants.HTYPE_INSTANCE
2870 _OP_REQP = ["instance_name", "force"]
2873 def ExpandNames(self):
2874 self._ExpandAndLockInstance()
2876 def BuildHooksEnv(self):
2879 This runs on master, primary and secondary nodes of the instance.
2883 "FORCE": self.op.force,
2885 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
2886 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
2889 def CheckPrereq(self):
2890 """Check prerequisites.
2892 This checks that the instance is in the cluster.
2895 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2896 assert self.instance is not None, \
2897 "Cannot retrieve locked instance %s" % self.op.instance_name
2900 self.beparams = getattr(self.op, "beparams", {})
2902 if not isinstance(self.beparams, dict):
2903 raise errors.OpPrereqError("Invalid beparams passed: %s, expected"
2904 " dict" % (type(self.beparams), ))
2905 # fill the beparams dict
2906 utils.ForceDictType(self.beparams, constants.BES_PARAMETER_TYPES)
2907 self.op.beparams = self.beparams
2910 self.hvparams = getattr(self.op, "hvparams", {})
2912 if not isinstance(self.hvparams, dict):
2913 raise errors.OpPrereqError("Invalid hvparams passed: %s, expected"
2914 " dict" % (type(self.hvparams), ))
2916 # check hypervisor parameter syntax (locally)
2917 cluster = self.cfg.GetClusterInfo()
2918 utils.ForceDictType(self.hvparams, constants.HVS_PARAMETER_TYPES)
2919 filled_hvp = objects.FillDict(cluster.hvparams[instance.hypervisor],
2921 filled_hvp.update(self.hvparams)
2922 hv_type = hypervisor.GetHypervisor(instance.hypervisor)
2923 hv_type.CheckParameterSyntax(filled_hvp)
2924 _CheckHVParams(self, instance.all_nodes, instance.hypervisor, filled_hvp)
2925 self.op.hvparams = self.hvparams
2927 _CheckNodeOnline(self, instance.primary_node)
2929 bep = self.cfg.GetClusterInfo().FillBE(instance)
2930 # check bridges existance
2931 _CheckInstanceBridgesExist(self, instance)
2933 remote_info = self.rpc.call_instance_info(instance.primary_node,
2935 instance.hypervisor)
2936 msg = remote_info.RemoteFailMsg()
2938 raise errors.OpPrereqError("Error checking node %s: %s" %
2939 (instance.primary_node, msg))
2940 if not remote_info.payload: # not running already
2941 _CheckNodeFreeMemory(self, instance.primary_node,
2942 "starting instance %s" % instance.name,
2943 bep[constants.BE_MEMORY], instance.hypervisor)
2945 def Exec(self, feedback_fn):
2946 """Start the instance.
2949 instance = self.instance
2950 force = self.op.force
2952 self.cfg.MarkInstanceUp(instance.name)
2954 node_current = instance.primary_node
2956 _StartInstanceDisks(self, instance, force)
2958 result = self.rpc.call_instance_start(node_current, instance,
2959 self.hvparams, self.beparams)
2960 msg = result.RemoteFailMsg()
2962 _ShutdownInstanceDisks(self, instance)
2963 raise errors.OpExecError("Could not start instance: %s" % msg)
2966 class LURebootInstance(LogicalUnit):
2967 """Reboot an instance.
2970 HPATH = "instance-reboot"
2971 HTYPE = constants.HTYPE_INSTANCE
2972 _OP_REQP = ["instance_name", "ignore_secondaries", "reboot_type"]
2975 def ExpandNames(self):
2976 if self.op.reboot_type not in [constants.INSTANCE_REBOOT_SOFT,
2977 constants.INSTANCE_REBOOT_HARD,
2978 constants.INSTANCE_REBOOT_FULL]:
2979 raise errors.ParameterError("reboot type not in [%s, %s, %s]" %
2980 (constants.INSTANCE_REBOOT_SOFT,
2981 constants.INSTANCE_REBOOT_HARD,
2982 constants.INSTANCE_REBOOT_FULL))
2983 self._ExpandAndLockInstance()
2985 def BuildHooksEnv(self):
2988 This runs on master, primary and secondary nodes of the instance.
2992 "IGNORE_SECONDARIES": self.op.ignore_secondaries,
2993 "REBOOT_TYPE": self.op.reboot_type,
2995 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
2996 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
2999 def CheckPrereq(self):
3000 """Check prerequisites.
3002 This checks that the instance is in the cluster.
3005 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3006 assert self.instance is not None, \
3007 "Cannot retrieve locked instance %s" % self.op.instance_name
3009 _CheckNodeOnline(self, instance.primary_node)
3011 # check bridges existance
3012 _CheckInstanceBridgesExist(self, instance)
3014 def Exec(self, feedback_fn):
3015 """Reboot the instance.
3018 instance = self.instance
3019 ignore_secondaries = self.op.ignore_secondaries
3020 reboot_type = self.op.reboot_type
3022 node_current = instance.primary_node
3024 if reboot_type in [constants.INSTANCE_REBOOT_SOFT,
3025 constants.INSTANCE_REBOOT_HARD]:
3026 for disk in instance.disks:
3027 self.cfg.SetDiskID(disk, node_current)
3028 result = self.rpc.call_instance_reboot(node_current, instance,
3030 msg = result.RemoteFailMsg()
3032 raise errors.OpExecError("Could not reboot instance: %s" % msg)
3034 result = self.rpc.call_instance_shutdown(node_current, instance)
3035 msg = result.RemoteFailMsg()
3037 raise errors.OpExecError("Could not shutdown instance for"
3038 " full reboot: %s" % msg)
3039 _ShutdownInstanceDisks(self, instance)
3040 _StartInstanceDisks(self, instance, ignore_secondaries)
3041 result = self.rpc.call_instance_start(node_current, instance, None, None)
3042 msg = result.RemoteFailMsg()
3044 _ShutdownInstanceDisks(self, instance)
3045 raise errors.OpExecError("Could not start instance for"
3046 " full reboot: %s" % msg)
3048 self.cfg.MarkInstanceUp(instance.name)
3051 class LUShutdownInstance(LogicalUnit):
3052 """Shutdown an instance.
3055 HPATH = "instance-stop"
3056 HTYPE = constants.HTYPE_INSTANCE
3057 _OP_REQP = ["instance_name"]
3060 def ExpandNames(self):
3061 self._ExpandAndLockInstance()
3063 def BuildHooksEnv(self):
3066 This runs on master, primary and secondary nodes of the instance.
3069 env = _BuildInstanceHookEnvByObject(self, self.instance)
3070 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
3073 def CheckPrereq(self):
3074 """Check prerequisites.
3076 This checks that the instance is in the cluster.
3079 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3080 assert self.instance is not None, \
3081 "Cannot retrieve locked instance %s" % self.op.instance_name
3082 _CheckNodeOnline(self, self.instance.primary_node)
3084 def Exec(self, feedback_fn):
3085 """Shutdown the instance.
3088 instance = self.instance
3089 node_current = instance.primary_node
3090 self.cfg.MarkInstanceDown(instance.name)
3091 result = self.rpc.call_instance_shutdown(node_current, instance)
3092 msg = result.RemoteFailMsg()
3094 self.proc.LogWarning("Could not shutdown instance: %s" % msg)
3096 _ShutdownInstanceDisks(self, instance)
3099 class LUReinstallInstance(LogicalUnit):
3100 """Reinstall an instance.
3103 HPATH = "instance-reinstall"
3104 HTYPE = constants.HTYPE_INSTANCE
3105 _OP_REQP = ["instance_name"]
3108 def ExpandNames(self):
3109 self._ExpandAndLockInstance()
3111 def BuildHooksEnv(self):
3114 This runs on master, primary and secondary nodes of the instance.
3117 env = _BuildInstanceHookEnvByObject(self, self.instance)
3118 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
3121 def CheckPrereq(self):
3122 """Check prerequisites.
3124 This checks that the instance is in the cluster and is not running.
3127 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3128 assert instance is not None, \
3129 "Cannot retrieve locked instance %s" % self.op.instance_name
3130 _CheckNodeOnline(self, instance.primary_node)
3132 if instance.disk_template == constants.DT_DISKLESS:
3133 raise errors.OpPrereqError("Instance '%s' has no disks" %
3134 self.op.instance_name)
3135 if instance.admin_up:
3136 raise errors.OpPrereqError("Instance '%s' is marked to be up" %
3137 self.op.instance_name)
3138 remote_info = self.rpc.call_instance_info(instance.primary_node,
3140 instance.hypervisor)
3141 msg = remote_info.RemoteFailMsg()
3143 raise errors.OpPrereqError("Error checking node %s: %s" %
3144 (instance.primary_node, msg))
3145 if remote_info.payload:
3146 raise errors.OpPrereqError("Instance '%s' is running on the node %s" %
3147 (self.op.instance_name,
3148 instance.primary_node))
3150 self.op.os_type = getattr(self.op, "os_type", None)
3151 if self.op.os_type is not None:
3153 pnode = self.cfg.GetNodeInfo(
3154 self.cfg.ExpandNodeName(instance.primary_node))
3156 raise errors.OpPrereqError("Primary node '%s' is unknown" %
3158 result = self.rpc.call_os_get(pnode.name, self.op.os_type)
3160 if not isinstance(result.data, objects.OS):
3161 raise errors.OpPrereqError("OS '%s' not in supported OS list for"
3162 " primary node" % self.op.os_type)
3164 self.instance = instance
3166 def Exec(self, feedback_fn):
3167 """Reinstall the instance.
3170 inst = self.instance
3172 if self.op.os_type is not None:
3173 feedback_fn("Changing OS to '%s'..." % self.op.os_type)
3174 inst.os = self.op.os_type
3175 self.cfg.Update(inst)
3177 _StartInstanceDisks(self, inst, None)
3179 feedback_fn("Running the instance OS create scripts...")
3180 result = self.rpc.call_instance_os_add(inst.primary_node, inst, True)
3181 msg = result.RemoteFailMsg()
3183 raise errors.OpExecError("Could not install OS for instance %s"
3185 (inst.name, inst.primary_node, msg))
3187 _ShutdownInstanceDisks(self, inst)
3190 class LURenameInstance(LogicalUnit):
3191 """Rename an instance.
3194 HPATH = "instance-rename"
3195 HTYPE = constants.HTYPE_INSTANCE
3196 _OP_REQP = ["instance_name", "new_name"]
3198 def BuildHooksEnv(self):
3201 This runs on master, primary and secondary nodes of the instance.
3204 env = _BuildInstanceHookEnvByObject(self, self.instance)
3205 env["INSTANCE_NEW_NAME"] = self.op.new_name
3206 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
3209 def CheckPrereq(self):
3210 """Check prerequisites.
3212 This checks that the instance is in the cluster and is not running.
3215 instance = self.cfg.GetInstanceInfo(
3216 self.cfg.ExpandInstanceName(self.op.instance_name))
3217 if instance is None:
3218 raise errors.OpPrereqError("Instance '%s' not known" %
3219 self.op.instance_name)
3220 _CheckNodeOnline(self, instance.primary_node)
3222 if instance.admin_up:
3223 raise errors.OpPrereqError("Instance '%s' is marked to be up" %
3224 self.op.instance_name)
3225 remote_info = self.rpc.call_instance_info(instance.primary_node,
3227 instance.hypervisor)
3228 msg = remote_info.RemoteFailMsg()
3230 raise errors.OpPrereqError("Error checking node %s: %s" %
3231 (instance.primary_node, msg))
3232 if remote_info.payload:
3233 raise errors.OpPrereqError("Instance '%s' is running on the node %s" %
3234 (self.op.instance_name,
3235 instance.primary_node))
3236 self.instance = instance
3238 # new name verification
3239 name_info = utils.HostInfo(self.op.new_name)
3241 self.op.new_name = new_name = name_info.name
3242 instance_list = self.cfg.GetInstanceList()
3243 if new_name in instance_list:
3244 raise errors.OpPrereqError("Instance '%s' is already in the cluster" %
3247 if not getattr(self.op, "ignore_ip", False):
3248 if utils.TcpPing(name_info.ip, constants.DEFAULT_NODED_PORT):
3249 raise errors.OpPrereqError("IP %s of instance %s already in use" %
3250 (name_info.ip, new_name))
3253 def Exec(self, feedback_fn):
3254 """Reinstall the instance.
3257 inst = self.instance
3258 old_name = inst.name
3260 if inst.disk_template == constants.DT_FILE:
3261 old_file_storage_dir = os.path.dirname(inst.disks[0].logical_id[1])
3263 self.cfg.RenameInstance(inst.name, self.op.new_name)
3264 # Change the instance lock. This is definitely safe while we hold the BGL
3265 self.context.glm.remove(locking.LEVEL_INSTANCE, old_name)
3266 self.context.glm.add(locking.LEVEL_INSTANCE, self.op.new_name)
3268 # re-read the instance from the configuration after rename
3269 inst = self.cfg.GetInstanceInfo(self.op.new_name)
3271 if inst.disk_template == constants.DT_FILE:
3272 new_file_storage_dir = os.path.dirname(inst.disks[0].logical_id[1])
3273 result = self.rpc.call_file_storage_dir_rename(inst.primary_node,
3274 old_file_storage_dir,
3275 new_file_storage_dir)
3276 msg = result.RemoteFailMsg()
3278 raise errors.OpExecError("Could not rename on node %s"
3279 " directory '%s' to '%s' (but the instance"
3280 " has been renamed in Ganeti): %s" %
3281 (inst.primary_node, old_file_storage_dir,
3282 new_file_storage_dir, msg))
3284 _StartInstanceDisks(self, inst, None)
3286 result = self.rpc.call_instance_run_rename(inst.primary_node, inst,
3288 msg = result.RemoteFailMsg()
3290 msg = ("Could not run OS rename script for instance %s on node %s"
3291 " (but the instance has been renamed in Ganeti): %s" %
3292 (inst.name, inst.primary_node, msg))
3293 self.proc.LogWarning(msg)
3295 _ShutdownInstanceDisks(self, inst)
3298 class LURemoveInstance(LogicalUnit):
3299 """Remove an instance.
3302 HPATH = "instance-remove"
3303 HTYPE = constants.HTYPE_INSTANCE
3304 _OP_REQP = ["instance_name", "ignore_failures"]
3307 def ExpandNames(self):
3308 self._ExpandAndLockInstance()
3309 self.needed_locks[locking.LEVEL_NODE] = []
3310 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3312 def DeclareLocks(self, level):
3313 if level == locking.LEVEL_NODE:
3314 self._LockInstancesNodes()
3316 def BuildHooksEnv(self):
3319 This runs on master, primary and secondary nodes of the instance.
3322 env = _BuildInstanceHookEnvByObject(self, self.instance)
3323 nl = [self.cfg.GetMasterNode()]
3326 def CheckPrereq(self):
3327 """Check prerequisites.
3329 This checks that the instance is in the cluster.
3332 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3333 assert self.instance is not None, \
3334 "Cannot retrieve locked instance %s" % self.op.instance_name
3336 def Exec(self, feedback_fn):
3337 """Remove the instance.
3340 instance = self.instance
3341 logging.info("Shutting down instance %s on node %s",
3342 instance.name, instance.primary_node)
3344 result = self.rpc.call_instance_shutdown(instance.primary_node, instance)
3345 msg = result.RemoteFailMsg()
3347 if self.op.ignore_failures:
3348 feedback_fn("Warning: can't shutdown instance: %s" % msg)
3350 raise errors.OpExecError("Could not shutdown instance %s on"
3352 (instance.name, instance.primary_node, msg))
3354 logging.info("Removing block devices for instance %s", instance.name)
3356 if not _RemoveDisks(self, instance):
3357 if self.op.ignore_failures:
3358 feedback_fn("Warning: can't remove instance's disks")
3360 raise errors.OpExecError("Can't remove instance's disks")
3362 logging.info("Removing instance %s out of cluster config", instance.name)
3364 self.cfg.RemoveInstance(instance.name)
3365 self.remove_locks[locking.LEVEL_INSTANCE] = instance.name
3368 class LUQueryInstances(NoHooksLU):
3369 """Logical unit for querying instances.
3372 _OP_REQP = ["output_fields", "names", "use_locking"]
3374 _FIELDS_STATIC = utils.FieldSet(*["name", "os", "pnode", "snodes",
3376 "disk_template", "ip", "mac", "bridge",
3377 "sda_size", "sdb_size", "vcpus", "tags",
3378 "network_port", "beparams",
3379 r"(disk)\.(size)/([0-9]+)",
3380 r"(disk)\.(sizes)", "disk_usage",
3381 r"(nic)\.(mac|ip|bridge)/([0-9]+)",
3382 r"(nic)\.(macs|ips|bridges)",
3383 r"(disk|nic)\.(count)",
3384 "serial_no", "hypervisor", "hvparams",] +
3386 for name in constants.HVS_PARAMETERS] +
3388 for name in constants.BES_PARAMETERS])
3389 _FIELDS_DYNAMIC = utils.FieldSet("oper_state", "oper_ram", "status")
3392 def ExpandNames(self):
3393 _CheckOutputFields(static=self._FIELDS_STATIC,
3394 dynamic=self._FIELDS_DYNAMIC,
3395 selected=self.op.output_fields)
3397 self.needed_locks = {}
3398 self.share_locks[locking.LEVEL_INSTANCE] = 1
3399 self.share_locks[locking.LEVEL_NODE] = 1
3402 self.wanted = _GetWantedInstances(self, self.op.names)
3404 self.wanted = locking.ALL_SET
3406 self.do_node_query = self._FIELDS_STATIC.NonMatching(self.op.output_fields)
3407 self.do_locking = self.do_node_query and self.op.use_locking
3409 self.needed_locks[locking.LEVEL_INSTANCE] = self.wanted
3410 self.needed_locks[locking.LEVEL_NODE] = []
3411 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3413 def DeclareLocks(self, level):
3414 if level == locking.LEVEL_NODE and self.do_locking:
3415 self._LockInstancesNodes()
3417 def CheckPrereq(self):
3418 """Check prerequisites.
3423 def Exec(self, feedback_fn):
3424 """Computes the list of nodes and their attributes.
3427 all_info = self.cfg.GetAllInstancesInfo()
3428 if self.wanted == locking.ALL_SET:
3429 # caller didn't specify instance names, so ordering is not important
3431 instance_names = self.acquired_locks[locking.LEVEL_INSTANCE]
3433 instance_names = all_info.keys()
3434 instance_names = utils.NiceSort(instance_names)
3436 # caller did specify names, so we must keep the ordering
3438 tgt_set = self.acquired_locks[locking.LEVEL_INSTANCE]
3440 tgt_set = all_info.keys()
3441 missing = set(self.wanted).difference(tgt_set)
3443 raise errors.OpExecError("Some instances were removed before"
3444 " retrieving their data: %s" % missing)
3445 instance_names = self.wanted
3447 instance_list = [all_info[iname] for iname in instance_names]
3449 # begin data gathering
3451 nodes = frozenset([inst.primary_node for inst in instance_list])
3452 hv_list = list(set([inst.hypervisor for inst in instance_list]))
3456 if self.do_node_query:
3458 node_data = self.rpc.call_all_instances_info(nodes, hv_list)
3460 result = node_data[name]
3462 # offline nodes will be in both lists
3463 off_nodes.append(name)
3464 if result.failed or result.RemoteFailMsg():
3465 bad_nodes.append(name)
3468 live_data.update(result.payload)
3469 # else no instance is alive
3471 live_data = dict([(name, {}) for name in instance_names])
3473 # end data gathering
3478 for instance in instance_list:
3480 i_hv = self.cfg.GetClusterInfo().FillHV(instance)
3481 i_be = self.cfg.GetClusterInfo().FillBE(instance)
3482 for field in self.op.output_fields:
3483 st_match = self._FIELDS_STATIC.Matches(field)
3488 elif field == "pnode":
3489 val = instance.primary_node
3490 elif field == "snodes":
3491 val = list(instance.secondary_nodes)
3492 elif field == "admin_state":
3493 val = instance.admin_up
3494 elif field == "oper_state":
3495 if instance.primary_node in bad_nodes:
3498 val = bool(live_data.get(instance.name))
3499 elif field == "status":
3500 if instance.primary_node in off_nodes:
3501 val = "ERROR_nodeoffline"
3502 elif instance.primary_node in bad_nodes:
3503 val = "ERROR_nodedown"
3505 running = bool(live_data.get(instance.name))
3507 if instance.admin_up:
3512 if instance.admin_up:
3516 elif field == "oper_ram":
3517 if instance.primary_node in bad_nodes:
3519 elif instance.name in live_data:
3520 val = live_data[instance.name].get("memory", "?")
3523 elif field == "disk_template":
3524 val = instance.disk_template
3526 val = instance.nics[0].ip
3527 elif field == "bridge":
3528 val = instance.nics[0].bridge
3529 elif field == "mac":
3530 val = instance.nics[0].mac
3531 elif field == "sda_size" or field == "sdb_size":
3532 idx = ord(field[2]) - ord('a')
3534 val = instance.FindDisk(idx).size
3535 except errors.OpPrereqError:
3537 elif field == "disk_usage": # total disk usage per node
3538 disk_sizes = [{'size': disk.size} for disk in instance.disks]
3539 val = _ComputeDiskSize(instance.disk_template, disk_sizes)
3540 elif field == "tags":
3541 val = list(instance.GetTags())
3542 elif field == "serial_no":
3543 val = instance.serial_no
3544 elif field == "network_port":
3545 val = instance.network_port
3546 elif field == "hypervisor":
3547 val = instance.hypervisor
3548 elif field == "hvparams":
3550 elif (field.startswith(HVPREFIX) and
3551 field[len(HVPREFIX):] in constants.HVS_PARAMETERS):
3552 val = i_hv.get(field[len(HVPREFIX):], None)
3553 elif field == "beparams":
3555 elif (field.startswith(BEPREFIX) and
3556 field[len(BEPREFIX):] in constants.BES_PARAMETERS):
3557 val = i_be.get(field[len(BEPREFIX):], None)
3558 elif st_match and st_match.groups():
3559 # matches a variable list
3560 st_groups = st_match.groups()
3561 if st_groups and st_groups[0] == "disk":
3562 if st_groups[1] == "count":
3563 val = len(instance.disks)
3564 elif st_groups[1] == "sizes":
3565 val = [disk.size for disk in instance.disks]
3566 elif st_groups[1] == "size":
3568 val = instance.FindDisk(st_groups[2]).size
3569 except errors.OpPrereqError:
3572 assert False, "Unhandled disk parameter"
3573 elif st_groups[0] == "nic":
3574 if st_groups[1] == "count":
3575 val = len(instance.nics)
3576 elif st_groups[1] == "macs":
3577 val = [nic.mac for nic in instance.nics]
3578 elif st_groups[1] == "ips":
3579 val = [nic.ip for nic in instance.nics]
3580 elif st_groups[1] == "bridges":
3581 val = [nic.bridge for nic in instance.nics]
3584 nic_idx = int(st_groups[2])
3585 if nic_idx >= len(instance.nics):
3588 if st_groups[1] == "mac":
3589 val = instance.nics[nic_idx].mac
3590 elif st_groups[1] == "ip":
3591 val = instance.nics[nic_idx].ip
3592 elif st_groups[1] == "bridge":
3593 val = instance.nics[nic_idx].bridge
3595 assert False, "Unhandled NIC parameter"
3597 assert False, "Unhandled variable parameter"
3599 raise errors.ParameterError(field)
3606 class LUFailoverInstance(LogicalUnit):
3607 """Failover an instance.
3610 HPATH = "instance-failover"
3611 HTYPE = constants.HTYPE_INSTANCE
3612 _OP_REQP = ["instance_name", "ignore_consistency"]
3615 def ExpandNames(self):
3616 self._ExpandAndLockInstance()
3617 self.needed_locks[locking.LEVEL_NODE] = []
3618 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3620 def DeclareLocks(self, level):
3621 if level == locking.LEVEL_NODE:
3622 self._LockInstancesNodes()
3624 def BuildHooksEnv(self):
3627 This runs on master, primary and secondary nodes of the instance.
3631 "IGNORE_CONSISTENCY": self.op.ignore_consistency,
3633 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
3634 nl = [self.cfg.GetMasterNode()] + list(self.instance.secondary_nodes)
3637 def CheckPrereq(self):
3638 """Check prerequisites.
3640 This checks that the instance is in the cluster.
3643 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3644 assert self.instance is not None, \
3645 "Cannot retrieve locked instance %s" % self.op.instance_name
3647 bep = self.cfg.GetClusterInfo().FillBE(instance)
3648 if instance.disk_template not in constants.DTS_NET_MIRROR:
3649 raise errors.OpPrereqError("Instance's disk layout is not"
3650 " network mirrored, cannot failover.")
3652 secondary_nodes = instance.secondary_nodes
3653 if not secondary_nodes:
3654 raise errors.ProgrammerError("no secondary node but using "
3655 "a mirrored disk template")
3657 target_node = secondary_nodes[0]
3658 _CheckNodeOnline(self, target_node)
3659 _CheckNodeNotDrained(self, target_node)
3660 # check memory requirements on the secondary node
3661 _CheckNodeFreeMemory(self, target_node, "failing over instance %s" %
3662 instance.name, bep[constants.BE_MEMORY],
3663 instance.hypervisor)
3664 # check bridge existance
3665 _CheckInstanceBridgesExist(self, instance, node=target_node)
3667 def Exec(self, feedback_fn):
3668 """Failover an instance.
3670 The failover is done by shutting it down on its present node and
3671 starting it on the secondary.
3674 instance = self.instance
3676 source_node = instance.primary_node
3677 target_node = instance.secondary_nodes[0]
3679 feedback_fn("* checking disk consistency between source and target")
3680 for dev in instance.disks:
3681 # for drbd, these are drbd over lvm
3682 if not _CheckDiskConsistency(self, dev, target_node, False):
3683 if instance.admin_up and not self.op.ignore_consistency:
3684 raise errors.OpExecError("Disk %s is degraded on target node,"
3685 " aborting failover." % dev.iv_name)
3687 feedback_fn("* shutting down instance on source node")
3688 logging.info("Shutting down instance %s on node %s",
3689 instance.name, source_node)
3691 result = self.rpc.call_instance_shutdown(source_node, instance)
3692 msg = result.RemoteFailMsg()
3694 if self.op.ignore_consistency:
3695 self.proc.LogWarning("Could not shutdown instance %s on node %s."
3696 " Proceeding anyway. Please make sure node"
3697 " %s is down. Error details: %s",
3698 instance.name, source_node, source_node, msg)
3700 raise errors.OpExecError("Could not shutdown instance %s on"
3702 (instance.name, source_node, msg))
3704 feedback_fn("* deactivating the instance's disks on source node")
3705 if not _ShutdownInstanceDisks(self, instance, ignore_primary=True):
3706 raise errors.OpExecError("Can't shut down the instance's disks.")
3708 instance.primary_node = target_node
3709 # distribute new instance config to the other nodes
3710 self.cfg.Update(instance)
3712 # Only start the instance if it's marked as up
3713 if instance.admin_up:
3714 feedback_fn("* activating the instance's disks on target node")
3715 logging.info("Starting instance %s on node %s",
3716 instance.name, target_node)
3718 disks_ok, dummy = _AssembleInstanceDisks(self, instance,
3719 ignore_secondaries=True)
3721 _ShutdownInstanceDisks(self, instance)
3722 raise errors.OpExecError("Can't activate the instance's disks")
3724 feedback_fn("* starting the instance on the target node")
3725 result = self.rpc.call_instance_start(target_node, instance, None, None)
3726 msg = result.RemoteFailMsg()
3728 _ShutdownInstanceDisks(self, instance)
3729 raise errors.OpExecError("Could not start instance %s on node %s: %s" %
3730 (instance.name, target_node, msg))
3733 class LUMigrateInstance(LogicalUnit):
3734 """Migrate an instance.
3736 This is migration without shutting down, compared to the failover,
3737 which is done with shutdown.
3740 HPATH = "instance-migrate"
3741 HTYPE = constants.HTYPE_INSTANCE
3742 _OP_REQP = ["instance_name", "live", "cleanup"]
3746 def ExpandNames(self):
3747 self._ExpandAndLockInstance()
3748 self.needed_locks[locking.LEVEL_NODE] = []
3749 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3751 def DeclareLocks(self, level):
3752 if level == locking.LEVEL_NODE:
3753 self._LockInstancesNodes()
3755 def BuildHooksEnv(self):
3758 This runs on master, primary and secondary nodes of the instance.
3761 env = _BuildInstanceHookEnvByObject(self, self.instance)
3762 env["MIGRATE_LIVE"] = self.op.live
3763 env["MIGRATE_CLEANUP"] = self.op.cleanup
3764 nl = [self.cfg.GetMasterNode()] + list(self.instance.secondary_nodes)
3767 def CheckPrereq(self):
3768 """Check prerequisites.
3770 This checks that the instance is in the cluster.
3773 instance = self.cfg.GetInstanceInfo(
3774 self.cfg.ExpandInstanceName(self.op.instance_name))
3775 if instance is None:
3776 raise errors.OpPrereqError("Instance '%s' not known" %
3777 self.op.instance_name)
3779 if instance.disk_template != constants.DT_DRBD8:
3780 raise errors.OpPrereqError("Instance's disk layout is not"
3781 " drbd8, cannot migrate.")
3783 secondary_nodes = instance.secondary_nodes
3784 if not secondary_nodes:
3785 raise errors.ConfigurationError("No secondary node but using"
3786 " drbd8 disk template")
3788 i_be = self.cfg.GetClusterInfo().FillBE(instance)
3790 target_node = secondary_nodes[0]
3791 # check memory requirements on the secondary node
3792 _CheckNodeFreeMemory(self, target_node, "migrating instance %s" %
3793 instance.name, i_be[constants.BE_MEMORY],
3794 instance.hypervisor)
3796 # check bridge existance
3797 _CheckInstanceBridgesExist(self, instance, node=target_node)
3799 if not self.op.cleanup:
3800 _CheckNodeNotDrained(self, target_node)
3801 result = self.rpc.call_instance_migratable(instance.primary_node,
3803 msg = result.RemoteFailMsg()
3805 raise errors.OpPrereqError("Can't migrate: %s - please use failover" %
3808 self.instance = instance
3810 def _WaitUntilSync(self):
3811 """Poll with custom rpc for disk sync.
3813 This uses our own step-based rpc call.
3816 self.feedback_fn("* wait until resync is done")
3820 result = self.rpc.call_drbd_wait_sync(self.all_nodes,
3822 self.instance.disks)
3824 for node, nres in result.items():
3825 msg = nres.RemoteFailMsg()
3827 raise errors.OpExecError("Cannot resync disks on node %s: %s" %
3829 node_done, node_percent = nres.payload
3830 all_done = all_done and node_done
3831 if node_percent is not None:
3832 min_percent = min(min_percent, node_percent)
3834 if min_percent < 100:
3835 self.feedback_fn(" - progress: %.1f%%" % min_percent)
3838 def _EnsureSecondary(self, node):
3839 """Demote a node to secondary.
3842 self.feedback_fn("* switching node %s to secondary mode" % node)
3844 for dev in self.instance.disks:
3845 self.cfg.SetDiskID(dev, node)
3847 result = self.rpc.call_blockdev_close(node, self.instance.name,
3848 self.instance.disks)
3849 msg = result.RemoteFailMsg()
3851 raise errors.OpExecError("Cannot change disk to secondary on node %s,"
3852 " error %s" % (node, msg))
3854 def _GoStandalone(self):
3855 """Disconnect from the network.
3858 self.feedback_fn("* changing into standalone mode")
3859 result = self.rpc.call_drbd_disconnect_net(self.all_nodes, self.nodes_ip,
3860 self.instance.disks)
3861 for node, nres in result.items():
3862 msg = nres.RemoteFailMsg()
3864 raise errors.OpExecError("Cannot disconnect disks node %s,"
3865 " error %s" % (node, msg))
3867 def _GoReconnect(self, multimaster):
3868 """Reconnect to the network.
3874 msg = "single-master"
3875 self.feedback_fn("* changing disks into %s mode" % msg)
3876 result = self.rpc.call_drbd_attach_net(self.all_nodes, self.nodes_ip,
3877 self.instance.disks,
3878 self.instance.name, multimaster)
3879 for node, nres in result.items():
3880 msg = nres.RemoteFailMsg()
3882 raise errors.OpExecError("Cannot change disks config on node %s,"
3883 " error: %s" % (node, msg))
3885 def _ExecCleanup(self):
3886 """Try to cleanup after a failed migration.
3888 The cleanup is done by:
3889 - check that the instance is running only on one node
3890 (and update the config if needed)
3891 - change disks on its secondary node to secondary
3892 - wait until disks are fully synchronized
3893 - disconnect from the network
3894 - change disks into single-master mode
3895 - wait again until disks are fully synchronized
3898 instance = self.instance
3899 target_node = self.target_node
3900 source_node = self.source_node
3902 # check running on only one node
3903 self.feedback_fn("* checking where the instance actually runs"
3904 " (if this hangs, the hypervisor might be in"
3906 ins_l = self.rpc.call_instance_list(self.all_nodes, [instance.hypervisor])
3907 for node, result in ins_l.items():
3908 msg = result.RemoteFailMsg()
3910 raise errors.OpExecError("Can't contact node %s: %s" % (node, msg))
3912 runningon_source = instance.name in ins_l[source_node].payload
3913 runningon_target = instance.name in ins_l[target_node].payload
3915 if runningon_source and runningon_target:
3916 raise errors.OpExecError("Instance seems to be running on two nodes,"
3917 " or the hypervisor is confused. You will have"
3918 " to ensure manually that it runs only on one"
3919 " and restart this operation.")
3921 if not (runningon_source or runningon_target):
3922 raise errors.OpExecError("Instance does not seem to be running at all."
3923 " In this case, it's safer to repair by"
3924 " running 'gnt-instance stop' to ensure disk"
3925 " shutdown, and then restarting it.")
3927 if runningon_target:
3928 # the migration has actually succeeded, we need to update the config
3929 self.feedback_fn("* instance running on secondary node (%s),"
3930 " updating config" % target_node)
3931 instance.primary_node = target_node
3932 self.cfg.Update(instance)
3933 demoted_node = source_node
3935 self.feedback_fn("* instance confirmed to be running on its"
3936 " primary node (%s)" % source_node)
3937 demoted_node = target_node
3939 self._EnsureSecondary(demoted_node)
3941 self._WaitUntilSync()
3942 except errors.OpExecError:
3943 # we ignore here errors, since if the device is standalone, it
3944 # won't be able to sync
3946 self._GoStandalone()
3947 self._GoReconnect(False)
3948 self._WaitUntilSync()
3950 self.feedback_fn("* done")
3952 def _RevertDiskStatus(self):
3953 """Try to revert the disk status after a failed migration.
3956 target_node = self.target_node
3958 self._EnsureSecondary(target_node)
3959 self._GoStandalone()
3960 self._GoReconnect(False)
3961 self._WaitUntilSync()
3962 except errors.OpExecError, err:
3963 self.LogWarning("Migration failed and I can't reconnect the"
3964 " drives: error '%s'\n"
3965 "Please look and recover the instance status" %
3968 def _AbortMigration(self):
3969 """Call the hypervisor code to abort a started migration.
3972 instance = self.instance
3973 target_node = self.target_node
3974 migration_info = self.migration_info
3976 abort_result = self.rpc.call_finalize_migration(target_node,
3980 abort_msg = abort_result.RemoteFailMsg()
3982 logging.error("Aborting migration failed on target node %s: %s" %
3983 (target_node, abort_msg))
3984 # Don't raise an exception here, as we stil have to try to revert the
3985 # disk status, even if this step failed.
3987 def _ExecMigration(self):
3988 """Migrate an instance.
3990 The migrate is done by:
3991 - change the disks into dual-master mode
3992 - wait until disks are fully synchronized again
3993 - migrate the instance
3994 - change disks on the new secondary node (the old primary) to secondary
3995 - wait until disks are fully synchronized
3996 - change disks into single-master mode
3999 instance = self.instance
4000 target_node = self.target_node
4001 source_node = self.source_node
4003 self.feedback_fn("* checking disk consistency between source and target")
4004 for dev in instance.disks:
4005 if not _CheckDiskConsistency(self, dev, target_node, False):
4006 raise errors.OpExecError("Disk %s is degraded or not fully"
4007 " synchronized on target node,"
4008 " aborting migrate." % dev.iv_name)
4010 # First get the migration information from the remote node
4011 result = self.rpc.call_migration_info(source_node, instance)
4012 msg = result.RemoteFailMsg()
4014 log_err = ("Failed fetching source migration information from %s: %s" %
4016 logging.error(log_err)
4017 raise errors.OpExecError(log_err)
4019 self.migration_info = migration_info = result.payload
4021 # Then switch the disks to master/master mode
4022 self._EnsureSecondary(target_node)
4023 self._GoStandalone()
4024 self._GoReconnect(True)
4025 self._WaitUntilSync()
4027 self.feedback_fn("* preparing %s to accept the instance" % target_node)
4028 result = self.rpc.call_accept_instance(target_node,
4031 self.nodes_ip[target_node])
4033 msg = result.RemoteFailMsg()
4035 logging.error("Instance pre-migration failed, trying to revert"
4036 " disk status: %s", msg)
4037 self._AbortMigration()
4038 self._RevertDiskStatus()
4039 raise errors.OpExecError("Could not pre-migrate instance %s: %s" %
4040 (instance.name, msg))
4042 self.feedback_fn("* migrating instance to %s" % target_node)
4044 result = self.rpc.call_instance_migrate(source_node, instance,
4045 self.nodes_ip[target_node],
4047 msg = result.RemoteFailMsg()
4049 logging.error("Instance migration failed, trying to revert"
4050 " disk status: %s", msg)
4051 self._AbortMigration()
4052 self._RevertDiskStatus()
4053 raise errors.OpExecError("Could not migrate instance %s: %s" %
4054 (instance.name, msg))
4057 instance.primary_node = target_node
4058 # distribute new instance config to the other nodes
4059 self.cfg.Update(instance)
4061 result = self.rpc.call_finalize_migration(target_node,
4065 msg = result.RemoteFailMsg()
4067 logging.error("Instance migration succeeded, but finalization failed:"
4069 raise errors.OpExecError("Could not finalize instance migration: %s" %
4072 self._EnsureSecondary(source_node)
4073 self._WaitUntilSync()
4074 self._GoStandalone()
4075 self._GoReconnect(False)
4076 self._WaitUntilSync()
4078 self.feedback_fn("* done")
4080 def Exec(self, feedback_fn):
4081 """Perform the migration.
4084 self.feedback_fn = feedback_fn
4086 self.source_node = self.instance.primary_node
4087 self.target_node = self.instance.secondary_nodes[0]
4088 self.all_nodes = [self.source_node, self.target_node]
4090 self.source_node: self.cfg.GetNodeInfo(self.source_node).secondary_ip,
4091 self.target_node: self.cfg.GetNodeInfo(self.target_node).secondary_ip,
4094 return self._ExecCleanup()
4096 return self._ExecMigration()
4099 def _CreateBlockDev(lu, node, instance, device, force_create,
4101 """Create a tree of block devices on a given node.
4103 If this device type has to be created on secondaries, create it and
4106 If not, just recurse to children keeping the same 'force' value.
4108 @param lu: the lu on whose behalf we execute
4109 @param node: the node on which to create the device
4110 @type instance: L{objects.Instance}
4111 @param instance: the instance which owns the device
4112 @type device: L{objects.Disk}
4113 @param device: the device to create
4114 @type force_create: boolean
4115 @param force_create: whether to force creation of this device; this
4116 will be change to True whenever we find a device which has
4117 CreateOnSecondary() attribute
4118 @param info: the extra 'metadata' we should attach to the device
4119 (this will be represented as a LVM tag)
4120 @type force_open: boolean
4121 @param force_open: this parameter will be passes to the
4122 L{backend.BlockdevCreate} function where it specifies
4123 whether we run on primary or not, and it affects both
4124 the child assembly and the device own Open() execution
4127 if device.CreateOnSecondary():
4131 for child in device.children:
4132 _CreateBlockDev(lu, node, instance, child, force_create,
4135 if not force_create:
4138 _CreateSingleBlockDev(lu, node, instance, device, info, force_open)
4141 def _CreateSingleBlockDev(lu, node, instance, device, info, force_open):
4142 """Create a single block device on a given node.
4144 This will not recurse over children of the device, so they must be
4147 @param lu: the lu on whose behalf we execute
4148 @param node: the node on which to create the device
4149 @type instance: L{objects.Instance}
4150 @param instance: the instance which owns the device
4151 @type device: L{objects.Disk}
4152 @param device: the device to create
4153 @param info: the extra 'metadata' we should attach to the device
4154 (this will be represented as a LVM tag)
4155 @type force_open: boolean
4156 @param force_open: this parameter will be passes to the
4157 L{backend.BlockdevCreate} function where it specifies
4158 whether we run on primary or not, and it affects both
4159 the child assembly and the device own Open() execution
4162 lu.cfg.SetDiskID(device, node)
4163 result = lu.rpc.call_blockdev_create(node, device, device.size,
4164 instance.name, force_open, info)
4165 msg = result.RemoteFailMsg()
4167 raise errors.OpExecError("Can't create block device %s on"
4168 " node %s for instance %s: %s" %
4169 (device, node, instance.name, msg))
4170 if device.physical_id is None:
4171 device.physical_id = result.payload
4174 def _GenerateUniqueNames(lu, exts):
4175 """Generate a suitable LV name.
4177 This will generate a logical volume name for the given instance.
4182 new_id = lu.cfg.GenerateUniqueID()
4183 results.append("%s%s" % (new_id, val))
4187 def _GenerateDRBD8Branch(lu, primary, secondary, size, names, iv_name,
4189 """Generate a drbd8 device complete with its children.
4192 port = lu.cfg.AllocatePort()
4193 vgname = lu.cfg.GetVGName()
4194 shared_secret = lu.cfg.GenerateDRBDSecret()
4195 dev_data = objects.Disk(dev_type=constants.LD_LV, size=size,
4196 logical_id=(vgname, names[0]))
4197 dev_meta = objects.Disk(dev_type=constants.LD_LV, size=128,
4198 logical_id=(vgname, names[1]))
4199 drbd_dev = objects.Disk(dev_type=constants.LD_DRBD8, size=size,
4200 logical_id=(primary, secondary, port,
4203 children=[dev_data, dev_meta],
4208 def _GenerateDiskTemplate(lu, template_name,
4209 instance_name, primary_node,
4210 secondary_nodes, disk_info,
4211 file_storage_dir, file_driver,
4213 """Generate the entire disk layout for a given template type.
4216 #TODO: compute space requirements
4218 vgname = lu.cfg.GetVGName()
4219 disk_count = len(disk_info)
4221 if template_name == constants.DT_DISKLESS:
4223 elif template_name == constants.DT_PLAIN:
4224 if len(secondary_nodes) != 0:
4225 raise errors.ProgrammerError("Wrong template configuration")
4227 names = _GenerateUniqueNames(lu, [".disk%d" % i
4228 for i in range(disk_count)])
4229 for idx, disk in enumerate(disk_info):
4230 disk_index = idx + base_index
4231 disk_dev = objects.Disk(dev_type=constants.LD_LV, size=disk["size"],
4232 logical_id=(vgname, names[idx]),
4233 iv_name="disk/%d" % disk_index,
4235 disks.append(disk_dev)
4236 elif template_name == constants.DT_DRBD8:
4237 if len(secondary_nodes) != 1:
4238 raise errors.ProgrammerError("Wrong template configuration")
4239 remote_node = secondary_nodes[0]
4240 minors = lu.cfg.AllocateDRBDMinor(
4241 [primary_node, remote_node] * len(disk_info), instance_name)
4244 for lv_prefix in _GenerateUniqueNames(lu, [".disk%d" % i
4245 for i in range(disk_count)]):
4246 names.append(lv_prefix + "_data")
4247 names.append(lv_prefix + "_meta")
4248 for idx, disk in enumerate(disk_info):
4249 disk_index = idx + base_index
4250 disk_dev = _GenerateDRBD8Branch(lu, primary_node, remote_node,
4251 disk["size"], names[idx*2:idx*2+2],
4252 "disk/%d" % disk_index,
4253 minors[idx*2], minors[idx*2+1])
4254 disk_dev.mode = disk["mode"]
4255 disks.append(disk_dev)
4256 elif template_name == constants.DT_FILE:
4257 if len(secondary_nodes) != 0:
4258 raise errors.ProgrammerError("Wrong template configuration")
4260 for idx, disk in enumerate(disk_info):
4261 disk_index = idx + base_index
4262 disk_dev = objects.Disk(dev_type=constants.LD_FILE, size=disk["size"],
4263 iv_name="disk/%d" % disk_index,
4264 logical_id=(file_driver,
4265 "%s/disk%d" % (file_storage_dir,
4268 disks.append(disk_dev)
4270 raise errors.ProgrammerError("Invalid disk template '%s'" % template_name)
4274 def _GetInstanceInfoText(instance):
4275 """Compute that text that should be added to the disk's metadata.
4278 return "originstname+%s" % instance.name
4281 def _CreateDisks(lu, instance):
4282 """Create all disks for an instance.
4284 This abstracts away some work from AddInstance.
4286 @type lu: L{LogicalUnit}
4287 @param lu: the logical unit on whose behalf we execute
4288 @type instance: L{objects.Instance}
4289 @param instance: the instance whose disks we should create
4291 @return: the success of the creation
4294 info = _GetInstanceInfoText(instance)
4295 pnode = instance.primary_node
4297 if instance.disk_template == constants.DT_FILE:
4298 file_storage_dir = os.path.dirname(instance.disks[0].logical_id[1])
4299 result = lu.rpc.call_file_storage_dir_create(pnode, file_storage_dir)
4301 msg = result.RemoteFailMsg()
4304 raise errors.OpExecError("Failed to create directory '%s' on"
4305 " node %s: %s" % (file_storage_dir, msg))
4307 # Note: this needs to be kept in sync with adding of disks in
4308 # LUSetInstanceParams
4309 for device in instance.disks:
4310 logging.info("Creating volume %s for instance %s",
4311 device.iv_name, instance.name)
4313 for node in instance.all_nodes:
4314 f_create = node == pnode
4315 _CreateBlockDev(lu, node, instance, device, f_create, info, f_create)
4318 def _RemoveDisks(lu, instance):
4319 """Remove all disks for an instance.
4321 This abstracts away some work from `AddInstance()` and
4322 `RemoveInstance()`. Note that in case some of the devices couldn't
4323 be removed, the removal will continue with the other ones (compare
4324 with `_CreateDisks()`).
4326 @type lu: L{LogicalUnit}
4327 @param lu: the logical unit on whose behalf we execute
4328 @type instance: L{objects.Instance}
4329 @param instance: the instance whose disks we should remove
4331 @return: the success of the removal
4334 logging.info("Removing block devices for instance %s", instance.name)
4337 for device in instance.disks:
4338 for node, disk in device.ComputeNodeTree(instance.primary_node):
4339 lu.cfg.SetDiskID(disk, node)
4340 msg = lu.rpc.call_blockdev_remove(node, disk).RemoteFailMsg()
4342 lu.LogWarning("Could not remove block device %s on node %s,"
4343 " continuing anyway: %s", device.iv_name, node, msg)
4346 if instance.disk_template == constants.DT_FILE:
4347 file_storage_dir = os.path.dirname(instance.disks[0].logical_id[1])
4348 result = lu.rpc.call_file_storage_dir_remove(instance.primary_node,
4350 msg = result.RemoteFailMsg()
4352 lu.LogWarning("Could not remove directory '%s' on node %s: %s",
4353 file_storage_dir, instance.primary_node, msg)
4359 def _ComputeDiskSize(disk_template, disks):
4360 """Compute disk size requirements in the volume group
4363 # Required free disk space as a function of disk and swap space
4365 constants.DT_DISKLESS: None,
4366 constants.DT_PLAIN: sum(d["size"] for d in disks),
4367 # 128 MB are added for drbd metadata for each disk
4368 constants.DT_DRBD8: sum(d["size"] + 128 for d in disks),
4369 constants.DT_FILE: None,
4372 if disk_template not in req_size_dict:
4373 raise errors.ProgrammerError("Disk template '%s' size requirement"
4374 " is unknown" % disk_template)
4376 return req_size_dict[disk_template]
4379 def _CheckHVParams(lu, nodenames, hvname, hvparams):
4380 """Hypervisor parameter validation.
4382 This function abstract the hypervisor parameter validation to be
4383 used in both instance create and instance modify.
4385 @type lu: L{LogicalUnit}
4386 @param lu: the logical unit for which we check
4387 @type nodenames: list
4388 @param nodenames: the list of nodes on which we should check
4389 @type hvname: string
4390 @param hvname: the name of the hypervisor we should use
4391 @type hvparams: dict
4392 @param hvparams: the parameters which we need to check
4393 @raise errors.OpPrereqError: if the parameters are not valid
4396 hvinfo = lu.rpc.call_hypervisor_validate_params(nodenames,
4399 for node in nodenames:
4403 msg = info.RemoteFailMsg()
4405 raise errors.OpPrereqError("Hypervisor parameter validation"
4406 " failed on node %s: %s" % (node, msg))
4409 class LUCreateInstance(LogicalUnit):
4410 """Create an instance.
4413 HPATH = "instance-add"
4414 HTYPE = constants.HTYPE_INSTANCE
4415 _OP_REQP = ["instance_name", "disks", "disk_template",
4417 "wait_for_sync", "ip_check", "nics",
4418 "hvparams", "beparams"]
4421 def _ExpandNode(self, node):
4422 """Expands and checks one node name.
4425 node_full = self.cfg.ExpandNodeName(node)
4426 if node_full is None:
4427 raise errors.OpPrereqError("Unknown node %s" % node)
4430 def ExpandNames(self):
4431 """ExpandNames for CreateInstance.
4433 Figure out the right locks for instance creation.
4436 self.needed_locks = {}
4438 # set optional parameters to none if they don't exist
4439 for attr in ["pnode", "snode", "iallocator", "hypervisor"]:
4440 if not hasattr(self.op, attr):
4441 setattr(self.op, attr, None)
4443 # cheap checks, mostly valid constants given
4445 # verify creation mode
4446 if self.op.mode not in (constants.INSTANCE_CREATE,
4447 constants.INSTANCE_IMPORT):
4448 raise errors.OpPrereqError("Invalid instance creation mode '%s'" %
4451 # disk template and mirror node verification
4452 if self.op.disk_template not in constants.DISK_TEMPLATES:
4453 raise errors.OpPrereqError("Invalid disk template name")
4455 if self.op.hypervisor is None:
4456 self.op.hypervisor = self.cfg.GetHypervisorType()
4458 cluster = self.cfg.GetClusterInfo()
4459 enabled_hvs = cluster.enabled_hypervisors
4460 if self.op.hypervisor not in enabled_hvs:
4461 raise errors.OpPrereqError("Selected hypervisor (%s) not enabled in the"
4462 " cluster (%s)" % (self.op.hypervisor,
4463 ",".join(enabled_hvs)))
4465 # check hypervisor parameter syntax (locally)
4466 utils.ForceDictType(self.op.hvparams, constants.HVS_PARAMETER_TYPES)
4467 filled_hvp = objects.FillDict(cluster.hvparams[self.op.hypervisor],
4469 hv_type = hypervisor.GetHypervisor(self.op.hypervisor)
4470 hv_type.CheckParameterSyntax(filled_hvp)
4472 # fill and remember the beparams dict
4473 utils.ForceDictType(self.op.beparams, constants.BES_PARAMETER_TYPES)
4474 self.be_full = objects.FillDict(cluster.beparams[constants.PP_DEFAULT],
4477 #### instance parameters check
4479 # instance name verification
4480 hostname1 = utils.HostInfo(self.op.instance_name)
4481 self.op.instance_name = instance_name = hostname1.name
4483 # this is just a preventive check, but someone might still add this
4484 # instance in the meantime, and creation will fail at lock-add time
4485 if instance_name in self.cfg.GetInstanceList():
4486 raise errors.OpPrereqError("Instance '%s' is already in the cluster" %
4489 self.add_locks[locking.LEVEL_INSTANCE] = instance_name
4493 for idx, nic in enumerate(self.op.nics):
4494 nic_mode_req = nic.get("mode", None)
4495 nic_mode = nic_mode_req
4496 if nic_mode is None:
4497 nic_mode = cluster.nicparams[constants.PP_DEFAULT][constants.NIC_MODE]
4499 # in routed mode, for the first nic, the default ip is 'auto'
4500 if nic_mode == constants.NIC_MODE_ROUTED and idx == 0:
4501 default_ip_mode = constants.VALUE_AUTO
4503 default_ip_mode = constants.VALUE_NONE
4505 # ip validity checks
4506 ip = nic.get("ip", default_ip_mode)
4507 if ip is None or ip.lower() == constants.VALUE_NONE:
4509 elif ip.lower() == constants.VALUE_AUTO:
4510 nic_ip = hostname1.ip
4512 if not utils.IsValidIP(ip):
4513 raise errors.OpPrereqError("Given IP address '%s' doesn't look"
4514 " like a valid IP" % ip)
4517 # TODO: check the ip for uniqueness !!
4518 if nic_mode == constants.NIC_MODE_ROUTED and not nic_ip:
4519 raise errors.OpPrereqError("Routed nic mode requires an ip address")
4521 # MAC address verification
4522 mac = nic.get("mac", constants.VALUE_AUTO)
4523 if mac not in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
4524 if not utils.IsValidMac(mac.lower()):
4525 raise errors.OpPrereqError("Invalid MAC address specified: %s" %
4527 # bridge verification
4528 bridge = nic.get("bridge", None)
4529 link = nic.get("link", None)
4531 raise errors.OpPrereqError("Cannot pass 'bridge' and 'link' at the same time")
4532 elif bridge and nic_mode == constants.NIC_MODE_ROUTED:
4533 raise errors.OpPrereqError("Cannot pass 'bridge' on a routed nic")
4539 nicparams[constants.NIC_MODE] = nic_mode_req
4541 nicparams[constants.NIC_LINK] = link
4543 check_params = objects.FillDict(cluster.nicparams[constants.PP_DEFAULT],
4545 objects.NIC.CheckParameterSyntax(check_params)
4546 self.nics.append(objects.NIC(mac=mac, ip=nic_ip, nicparams=nicparams))
4548 # disk checks/pre-build
4550 for disk in self.op.disks:
4551 mode = disk.get("mode", constants.DISK_RDWR)
4552 if mode not in constants.DISK_ACCESS_SET:
4553 raise errors.OpPrereqError("Invalid disk access mode '%s'" %
4555 size = disk.get("size", None)
4557 raise errors.OpPrereqError("Missing disk size")
4561 raise errors.OpPrereqError("Invalid disk size '%s'" % size)
4562 self.disks.append({"size": size, "mode": mode})
4564 # used in CheckPrereq for ip ping check
4565 self.check_ip = hostname1.ip
4567 # file storage checks
4568 if (self.op.file_driver and
4569 not self.op.file_driver in constants.FILE_DRIVER):
4570 raise errors.OpPrereqError("Invalid file driver name '%s'" %
4571 self.op.file_driver)
4573 if self.op.file_storage_dir and os.path.isabs(self.op.file_storage_dir):
4574 raise errors.OpPrereqError("File storage directory path not absolute")
4576 ### Node/iallocator related checks
4577 if [self.op.iallocator, self.op.pnode].count(None) != 1:
4578 raise errors.OpPrereqError("One and only one of iallocator and primary"
4579 " node must be given")
4581 if self.op.iallocator:
4582 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
4584 self.op.pnode = self._ExpandNode(self.op.pnode)
4585 nodelist = [self.op.pnode]
4586 if self.op.snode is not None:
4587 self.op.snode = self._ExpandNode(self.op.snode)
4588 nodelist.append(self.op.snode)
4589 self.needed_locks[locking.LEVEL_NODE] = nodelist
4591 # in case of import lock the source node too
4592 if self.op.mode == constants.INSTANCE_IMPORT:
4593 src_node = getattr(self.op, "src_node", None)
4594 src_path = getattr(self.op, "src_path", None)
4596 if src_path is None:
4597 self.op.src_path = src_path = self.op.instance_name
4599 if src_node is None:
4600 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
4601 self.op.src_node = None
4602 if os.path.isabs(src_path):
4603 raise errors.OpPrereqError("Importing an instance from an absolute"
4604 " path requires a source node option.")
4606 self.op.src_node = src_node = self._ExpandNode(src_node)
4607 if self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET:
4608 self.needed_locks[locking.LEVEL_NODE].append(src_node)
4609 if not os.path.isabs(src_path):
4610 self.op.src_path = src_path = \
4611 os.path.join(constants.EXPORT_DIR, src_path)
4613 else: # INSTANCE_CREATE
4614 if getattr(self.op, "os_type", None) is None:
4615 raise errors.OpPrereqError("No guest OS specified")
4617 def _RunAllocator(self):
4618 """Run the allocator based on input opcode.
4621 nics = [n.ToDict() for n in self.nics]
4622 ial = IAllocator(self,
4623 mode=constants.IALLOCATOR_MODE_ALLOC,
4624 name=self.op.instance_name,
4625 disk_template=self.op.disk_template,
4628 vcpus=self.be_full[constants.BE_VCPUS],
4629 mem_size=self.be_full[constants.BE_MEMORY],
4632 hypervisor=self.op.hypervisor,
4635 ial.Run(self.op.iallocator)
4638 raise errors.OpPrereqError("Can't compute nodes using"
4639 " iallocator '%s': %s" % (self.op.iallocator,
4641 if len(ial.nodes) != ial.required_nodes:
4642 raise errors.OpPrereqError("iallocator '%s' returned invalid number"
4643 " of nodes (%s), required %s" %
4644 (self.op.iallocator, len(ial.nodes),
4645 ial.required_nodes))
4646 self.op.pnode = ial.nodes[0]
4647 self.LogInfo("Selected nodes for instance %s via iallocator %s: %s",
4648 self.op.instance_name, self.op.iallocator,
4649 ", ".join(ial.nodes))
4650 if ial.required_nodes == 2:
4651 self.op.snode = ial.nodes[1]
4653 def BuildHooksEnv(self):
4656 This runs on master, primary and secondary nodes of the instance.
4660 "ADD_MODE": self.op.mode,
4662 if self.op.mode == constants.INSTANCE_IMPORT:
4663 env["SRC_NODE"] = self.op.src_node
4664 env["SRC_PATH"] = self.op.src_path
4665 env["SRC_IMAGES"] = self.src_images
4667 env.update(_BuildInstanceHookEnv(
4668 name=self.op.instance_name,
4669 primary_node=self.op.pnode,
4670 secondary_nodes=self.secondaries,
4671 status=self.op.start,
4672 os_type=self.op.os_type,
4673 memory=self.be_full[constants.BE_MEMORY],
4674 vcpus=self.be_full[constants.BE_VCPUS],
4675 nics=_PreBuildNICHooksList(self, self.nics),
4676 disk_template=self.op.disk_template,
4677 disks=[(d["size"], d["mode"]) for d in self.disks],
4680 nl = ([self.cfg.GetMasterNode(), self.op.pnode] +
4685 def CheckPrereq(self):
4686 """Check prerequisites.
4689 if (not self.cfg.GetVGName() and
4690 self.op.disk_template not in constants.DTS_NOT_LVM):
4691 raise errors.OpPrereqError("Cluster does not support lvm-based"
4694 if self.op.mode == constants.INSTANCE_IMPORT:
4695 src_node = self.op.src_node
4696 src_path = self.op.src_path
4698 if src_node is None:
4699 locked_nodes = self.acquired_locks[locking.LEVEL_NODE]
4700 exp_list = self.rpc.call_export_list(locked_nodes)
4702 for node in exp_list:
4703 if exp_list[node].RemoteFailMsg():
4705 if src_path in exp_list[node].payload:
4707 self.op.src_node = src_node = node
4708 self.op.src_path = src_path = os.path.join(constants.EXPORT_DIR,
4712 raise errors.OpPrereqError("No export found for relative path %s" %
4715 _CheckNodeOnline(self, src_node)
4716 result = self.rpc.call_export_info(src_node, src_path)
4717 msg = result.RemoteFailMsg()
4719 raise errors.OpPrereqError("No export or invalid export found in"
4720 " dir %s: %s" % (src_path, msg))
4722 export_info = objects.SerializableConfigParser.Loads(str(result.payload))
4723 if not export_info.has_section(constants.INISECT_EXP):
4724 raise errors.ProgrammerError("Corrupted export config")
4726 ei_version = export_info.get(constants.INISECT_EXP, 'version')
4727 if (int(ei_version) != constants.EXPORT_VERSION):
4728 raise errors.OpPrereqError("Wrong export version %s (wanted %d)" %
4729 (ei_version, constants.EXPORT_VERSION))
4731 # Check that the new instance doesn't have less disks than the export
4732 instance_disks = len(self.disks)
4733 export_disks = export_info.getint(constants.INISECT_INS, 'disk_count')
4734 if instance_disks < export_disks:
4735 raise errors.OpPrereqError("Not enough disks to import."
4736 " (instance: %d, export: %d)" %
4737 (instance_disks, export_disks))
4739 self.op.os_type = export_info.get(constants.INISECT_EXP, 'os')
4741 for idx in range(export_disks):
4742 option = 'disk%d_dump' % idx
4743 if export_info.has_option(constants.INISECT_INS, option):
4744 # FIXME: are the old os-es, disk sizes, etc. useful?
4745 export_name = export_info.get(constants.INISECT_INS, option)
4746 image = os.path.join(src_path, export_name)
4747 disk_images.append(image)
4749 disk_images.append(False)
4751 self.src_images = disk_images
4753 old_name = export_info.get(constants.INISECT_INS, 'name')
4754 # FIXME: int() here could throw a ValueError on broken exports
4755 exp_nic_count = int(export_info.get(constants.INISECT_INS, 'nic_count'))
4756 if self.op.instance_name == old_name:
4757 for idx, nic in enumerate(self.nics):
4758 if nic.mac == constants.VALUE_AUTO and exp_nic_count >= idx:
4759 nic_mac_ini = 'nic%d_mac' % idx
4760 nic.mac = export_info.get(constants.INISECT_INS, nic_mac_ini)
4762 # ENDIF: self.op.mode == constants.INSTANCE_IMPORT
4763 # ip ping checks (we use the same ip that was resolved in ExpandNames)
4764 if self.op.start and not self.op.ip_check:
4765 raise errors.OpPrereqError("Cannot ignore IP address conflicts when"
4766 " adding an instance in start mode")
4768 if self.op.ip_check:
4769 if utils.TcpPing(self.check_ip, constants.DEFAULT_NODED_PORT):
4770 raise errors.OpPrereqError("IP %s of instance %s already in use" %
4771 (self.check_ip, self.op.instance_name))
4773 #### mac address generation
4774 # By generating here the mac address both the allocator and the hooks get
4775 # the real final mac address rather than the 'auto' or 'generate' value.
4776 # There is a race condition between the generation and the instance object
4777 # creation, which means that we know the mac is valid now, but we're not
4778 # sure it will be when we actually add the instance. If things go bad
4779 # adding the instance will abort because of a duplicate mac, and the
4780 # creation job will fail.
4781 for nic in self.nics:
4782 if nic.mac in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
4783 nic.mac = self.cfg.GenerateMAC()
4787 if self.op.iallocator is not None:
4788 self._RunAllocator()
4790 #### node related checks
4792 # check primary node
4793 self.pnode = pnode = self.cfg.GetNodeInfo(self.op.pnode)
4794 assert self.pnode is not None, \
4795 "Cannot retrieve locked node %s" % self.op.pnode
4797 raise errors.OpPrereqError("Cannot use offline primary node '%s'" %
4800 raise errors.OpPrereqError("Cannot use drained primary node '%s'" %
4803 self.secondaries = []
4805 # mirror node verification
4806 if self.op.disk_template in constants.DTS_NET_MIRROR:
4807 if self.op.snode is None:
4808 raise errors.OpPrereqError("The networked disk templates need"
4810 if self.op.snode == pnode.name:
4811 raise errors.OpPrereqError("The secondary node cannot be"
4812 " the primary node.")
4813 _CheckNodeOnline(self, self.op.snode)
4814 _CheckNodeNotDrained(self, self.op.snode)
4815 self.secondaries.append(self.op.snode)
4817 nodenames = [pnode.name] + self.secondaries
4819 req_size = _ComputeDiskSize(self.op.disk_template,
4822 # Check lv size requirements
4823 if req_size is not None:
4824 nodeinfo = self.rpc.call_node_info(nodenames, self.cfg.GetVGName(),
4826 for node in nodenames:
4827 info = nodeinfo[node]
4828 msg = info.RemoteFailMsg()
4830 raise errors.OpPrereqError("Cannot get current information"
4831 " from node %s: %s" % (node, msg))
4833 vg_free = info.get('vg_free', None)
4834 if not isinstance(vg_free, int):
4835 raise errors.OpPrereqError("Can't compute free disk space on"
4837 if req_size > vg_free:
4838 raise errors.OpPrereqError("Not enough disk space on target node %s."
4839 " %d MB available, %d MB required" %
4840 (node, vg_free, req_size))
4842 _CheckHVParams(self, nodenames, self.op.hypervisor, self.op.hvparams)
4845 result = self.rpc.call_os_get(pnode.name, self.op.os_type)
4847 if not isinstance(result.data, objects.OS):
4848 raise errors.OpPrereqError("OS '%s' not in supported os list for"
4849 " primary node" % self.op.os_type)
4851 _CheckNicsBridgesExist(self, self.nics, self.pnode.name)
4853 # memory check on primary node
4855 _CheckNodeFreeMemory(self, self.pnode.name,
4856 "creating instance %s" % self.op.instance_name,
4857 self.be_full[constants.BE_MEMORY],
4860 def Exec(self, feedback_fn):
4861 """Create and add the instance to the cluster.
4864 instance = self.op.instance_name
4865 pnode_name = self.pnode.name
4867 ht_kind = self.op.hypervisor
4868 if ht_kind in constants.HTS_REQ_PORT:
4869 network_port = self.cfg.AllocatePort()
4873 ##if self.op.vnc_bind_address is None:
4874 ## self.op.vnc_bind_address = constants.VNC_DEFAULT_BIND_ADDRESS
4876 # this is needed because os.path.join does not accept None arguments
4877 if self.op.file_storage_dir is None:
4878 string_file_storage_dir = ""
4880 string_file_storage_dir = self.op.file_storage_dir
4882 # build the full file storage dir path
4883 file_storage_dir = os.path.normpath(os.path.join(
4884 self.cfg.GetFileStorageDir(),
4885 string_file_storage_dir, instance))
4888 disks = _GenerateDiskTemplate(self,
4889 self.op.disk_template,
4890 instance, pnode_name,
4894 self.op.file_driver,
4897 iobj = objects.Instance(name=instance, os=self.op.os_type,
4898 primary_node=pnode_name,
4899 nics=self.nics, disks=disks,
4900 disk_template=self.op.disk_template,
4902 network_port=network_port,
4903 beparams=self.op.beparams,
4904 hvparams=self.op.hvparams,
4905 hypervisor=self.op.hypervisor,
4908 feedback_fn("* creating instance disks...")
4910 _CreateDisks(self, iobj)
4911 except errors.OpExecError:
4912 self.LogWarning("Device creation failed, reverting...")
4914 _RemoveDisks(self, iobj)
4916 self.cfg.ReleaseDRBDMinors(instance)
4919 feedback_fn("adding instance %s to cluster config" % instance)
4921 self.cfg.AddInstance(iobj)
4922 # Declare that we don't want to remove the instance lock anymore, as we've
4923 # added the instance to the config
4924 del self.remove_locks[locking.LEVEL_INSTANCE]
4925 # Unlock all the nodes
4926 if self.op.mode == constants.INSTANCE_IMPORT:
4927 nodes_keep = [self.op.src_node]
4928 nodes_release = [node for node in self.acquired_locks[locking.LEVEL_NODE]
4929 if node != self.op.src_node]
4930 self.context.glm.release(locking.LEVEL_NODE, nodes_release)
4931 self.acquired_locks[locking.LEVEL_NODE] = nodes_keep
4933 self.context.glm.release(locking.LEVEL_NODE)
4934 del self.acquired_locks[locking.LEVEL_NODE]
4936 if self.op.wait_for_sync:
4937 disk_abort = not _WaitForSync(self, iobj)
4938 elif iobj.disk_template in constants.DTS_NET_MIRROR:
4939 # make sure the disks are not degraded (still sync-ing is ok)
4941 feedback_fn("* checking mirrors status")
4942 disk_abort = not _WaitForSync(self, iobj, oneshot=True)
4947 _RemoveDisks(self, iobj)
4948 self.cfg.RemoveInstance(iobj.name)
4949 # Make sure the instance lock gets removed
4950 self.remove_locks[locking.LEVEL_INSTANCE] = iobj.name
4951 raise errors.OpExecError("There are some degraded disks for"
4954 feedback_fn("creating os for instance %s on node %s" %
4955 (instance, pnode_name))
4957 if iobj.disk_template != constants.DT_DISKLESS:
4958 if self.op.mode == constants.INSTANCE_CREATE:
4959 feedback_fn("* running the instance OS create scripts...")
4960 result = self.rpc.call_instance_os_add(pnode_name, iobj, False)
4961 msg = result.RemoteFailMsg()
4963 raise errors.OpExecError("Could not add os for instance %s"
4965 (instance, pnode_name, msg))
4967 elif self.op.mode == constants.INSTANCE_IMPORT:
4968 feedback_fn("* running the instance OS import scripts...")
4969 src_node = self.op.src_node
4970 src_images = self.src_images
4971 cluster_name = self.cfg.GetClusterName()
4972 import_result = self.rpc.call_instance_os_import(pnode_name, iobj,
4973 src_node, src_images,
4975 msg = import_result.RemoteFailMsg()
4977 self.LogWarning("Error while importing the disk images for instance"
4978 " %s on node %s: %s" % (instance, pnode_name, msg))
4980 # also checked in the prereq part
4981 raise errors.ProgrammerError("Unknown OS initialization mode '%s'"
4985 iobj.admin_up = True
4986 self.cfg.Update(iobj)
4987 logging.info("Starting instance %s on node %s", instance, pnode_name)
4988 feedback_fn("* starting instance...")
4989 result = self.rpc.call_instance_start(pnode_name, iobj, None, None)
4990 msg = result.RemoteFailMsg()
4992 raise errors.OpExecError("Could not start instance: %s" % msg)
4995 class LUConnectConsole(NoHooksLU):
4996 """Connect to an instance's console.
4998 This is somewhat special in that it returns the command line that
4999 you need to run on the master node in order to connect to the
5003 _OP_REQP = ["instance_name"]
5006 def ExpandNames(self):
5007 self._ExpandAndLockInstance()
5009 def CheckPrereq(self):
5010 """Check prerequisites.
5012 This checks that the instance is in the cluster.
5015 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5016 assert self.instance is not None, \
5017 "Cannot retrieve locked instance %s" % self.op.instance_name
5018 _CheckNodeOnline(self, self.instance.primary_node)
5020 def Exec(self, feedback_fn):
5021 """Connect to the console of an instance
5024 instance = self.instance
5025 node = instance.primary_node
5027 node_insts = self.rpc.call_instance_list([node],
5028 [instance.hypervisor])[node]
5029 msg = node_insts.RemoteFailMsg()
5031 raise errors.OpExecError("Can't get node information from %s: %s" %
5034 if instance.name not in node_insts.payload:
5035 raise errors.OpExecError("Instance %s is not running." % instance.name)
5037 logging.debug("Connecting to console of %s on %s", instance.name, node)
5039 hyper = hypervisor.GetHypervisor(instance.hypervisor)
5040 cluster = self.cfg.GetClusterInfo()
5041 # beparams and hvparams are passed separately, to avoid editing the
5042 # instance and then saving the defaults in the instance itself.
5043 hvparams = cluster.FillHV(instance)
5044 beparams = cluster.FillBE(instance)
5045 console_cmd = hyper.GetShellCommandForConsole(instance, hvparams, beparams)
5048 return self.ssh.BuildCmd(node, "root", console_cmd, batch=True, tty=True)
5051 class LUReplaceDisks(LogicalUnit):
5052 """Replace the disks of an instance.
5055 HPATH = "mirrors-replace"
5056 HTYPE = constants.HTYPE_INSTANCE
5057 _OP_REQP = ["instance_name", "mode", "disks"]
5060 def CheckArguments(self):
5061 if not hasattr(self.op, "remote_node"):
5062 self.op.remote_node = None
5063 if not hasattr(self.op, "iallocator"):
5064 self.op.iallocator = None
5066 # check for valid parameter combination
5067 cnt = [self.op.remote_node, self.op.iallocator].count(None)
5068 if self.op.mode == constants.REPLACE_DISK_CHG:
5070 raise errors.OpPrereqError("When changing the secondary either an"
5071 " iallocator script must be used or the"
5074 raise errors.OpPrereqError("Give either the iallocator or the new"
5075 " secondary, not both")
5076 else: # not replacing the secondary
5078 raise errors.OpPrereqError("The iallocator and new node options can"
5079 " be used only when changing the"
5082 def ExpandNames(self):
5083 self._ExpandAndLockInstance()
5085 if self.op.iallocator is not None:
5086 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
5087 elif self.op.remote_node is not None:
5088 remote_node = self.cfg.ExpandNodeName(self.op.remote_node)
5089 if remote_node is None:
5090 raise errors.OpPrereqError("Node '%s' not known" %
5091 self.op.remote_node)
5092 self.op.remote_node = remote_node
5093 # Warning: do not remove the locking of the new secondary here
5094 # unless DRBD8.AddChildren is changed to work in parallel;
5095 # currently it doesn't since parallel invocations of
5096 # FindUnusedMinor will conflict
5097 self.needed_locks[locking.LEVEL_NODE] = [remote_node]
5098 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_APPEND
5100 self.needed_locks[locking.LEVEL_NODE] = []
5101 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5103 def DeclareLocks(self, level):
5104 # If we're not already locking all nodes in the set we have to declare the
5105 # instance's primary/secondary nodes.
5106 if (level == locking.LEVEL_NODE and
5107 self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET):
5108 self._LockInstancesNodes()
5110 def _RunAllocator(self):
5111 """Compute a new secondary node using an IAllocator.
5114 ial = IAllocator(self,
5115 mode=constants.IALLOCATOR_MODE_RELOC,
5116 name=self.op.instance_name,
5117 relocate_from=[self.sec_node])
5119 ial.Run(self.op.iallocator)
5122 raise errors.OpPrereqError("Can't compute nodes using"
5123 " iallocator '%s': %s" % (self.op.iallocator,
5125 if len(ial.nodes) != ial.required_nodes:
5126 raise errors.OpPrereqError("iallocator '%s' returned invalid number"
5127 " of nodes (%s), required %s" %
5128 (len(ial.nodes), ial.required_nodes))
5129 self.op.remote_node = ial.nodes[0]
5130 self.LogInfo("Selected new secondary for the instance: %s",
5131 self.op.remote_node)
5133 def BuildHooksEnv(self):
5136 This runs on the master, the primary and all the secondaries.
5140 "MODE": self.op.mode,
5141 "NEW_SECONDARY": self.op.remote_node,
5142 "OLD_SECONDARY": self.instance.secondary_nodes[0],
5144 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
5146 self.cfg.GetMasterNode(),
5147 self.instance.primary_node,
5149 if self.op.remote_node is not None:
5150 nl.append(self.op.remote_node)
5153 def CheckPrereq(self):
5154 """Check prerequisites.
5156 This checks that the instance is in the cluster.
5159 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5160 assert instance is not None, \
5161 "Cannot retrieve locked instance %s" % self.op.instance_name
5162 self.instance = instance
5164 if instance.disk_template != constants.DT_DRBD8:
5165 raise errors.OpPrereqError("Can only run replace disks for DRBD8-based"
5168 if len(instance.secondary_nodes) != 1:
5169 raise errors.OpPrereqError("The instance has a strange layout,"
5170 " expected one secondary but found %d" %
5171 len(instance.secondary_nodes))
5173 self.sec_node = instance.secondary_nodes[0]
5175 if self.op.iallocator is not None:
5176 self._RunAllocator()
5178 remote_node = self.op.remote_node
5179 if remote_node is not None:
5180 self.remote_node_info = self.cfg.GetNodeInfo(remote_node)
5181 assert self.remote_node_info is not None, \
5182 "Cannot retrieve locked node %s" % remote_node
5184 self.remote_node_info = None
5185 if remote_node == instance.primary_node:
5186 raise errors.OpPrereqError("The specified node is the primary node of"
5188 elif remote_node == self.sec_node:
5189 raise errors.OpPrereqError("The specified node is already the"
5190 " secondary node of the instance.")
5192 if self.op.mode == constants.REPLACE_DISK_PRI:
5193 n1 = self.tgt_node = instance.primary_node
5194 n2 = self.oth_node = self.sec_node
5195 elif self.op.mode == constants.REPLACE_DISK_SEC:
5196 n1 = self.tgt_node = self.sec_node
5197 n2 = self.oth_node = instance.primary_node
5198 elif self.op.mode == constants.REPLACE_DISK_CHG:
5199 n1 = self.new_node = remote_node
5200 n2 = self.oth_node = instance.primary_node
5201 self.tgt_node = self.sec_node
5202 _CheckNodeNotDrained(self, remote_node)
5204 raise errors.ProgrammerError("Unhandled disk replace mode")
5206 _CheckNodeOnline(self, n1)
5207 _CheckNodeOnline(self, n2)
5209 if not self.op.disks:
5210 self.op.disks = range(len(instance.disks))
5212 for disk_idx in self.op.disks:
5213 instance.FindDisk(disk_idx)
5215 def _ExecD8DiskOnly(self, feedback_fn):
5216 """Replace a disk on the primary or secondary for dbrd8.
5218 The algorithm for replace is quite complicated:
5220 1. for each disk to be replaced:
5222 1. create new LVs on the target node with unique names
5223 1. detach old LVs from the drbd device
5224 1. rename old LVs to name_replaced.<time_t>
5225 1. rename new LVs to old LVs
5226 1. attach the new LVs (with the old names now) to the drbd device
5228 1. wait for sync across all devices
5230 1. for each modified disk:
5232 1. remove old LVs (which have the name name_replaces.<time_t>)
5234 Failures are not very well handled.
5238 warning, info = (self.proc.LogWarning, self.proc.LogInfo)
5239 instance = self.instance
5241 vgname = self.cfg.GetVGName()
5244 tgt_node = self.tgt_node
5245 oth_node = self.oth_node
5247 # Step: check device activation
5248 self.proc.LogStep(1, steps_total, "check device existence")
5249 info("checking volume groups")
5250 my_vg = cfg.GetVGName()
5251 results = self.rpc.call_vg_list([oth_node, tgt_node])
5253 raise errors.OpExecError("Can't list volume groups on the nodes")
5254 for node in oth_node, tgt_node:
5256 msg = res.RemoteFailMsg()
5258 raise errors.OpExecError("Error checking node %s: %s" % (node, msg))
5259 if my_vg not in res.payload:
5260 raise errors.OpExecError("Volume group '%s' not found on %s" %
5262 for idx, dev in enumerate(instance.disks):
5263 if idx not in self.op.disks:
5265 for node in tgt_node, oth_node:
5266 info("checking disk/%d on %s" % (idx, node))
5267 cfg.SetDiskID(dev, node)
5268 result = self.rpc.call_blockdev_find(node, dev)
5269 msg = result.RemoteFailMsg()
5270 if not msg and not result.payload:
5271 msg = "disk not found"
5273 raise errors.OpExecError("Can't find disk/%d on node %s: %s" %
5276 # Step: check other node consistency
5277 self.proc.LogStep(2, steps_total, "check peer consistency")
5278 for idx, dev in enumerate(instance.disks):
5279 if idx not in self.op.disks:
5281 info("checking disk/%d consistency on %s" % (idx, oth_node))
5282 if not _CheckDiskConsistency(self, dev, oth_node,
5283 oth_node==instance.primary_node):
5284 raise errors.OpExecError("Peer node (%s) has degraded storage, unsafe"
5285 " to replace disks on this node (%s)" %
5286 (oth_node, tgt_node))
5288 # Step: create new storage
5289 self.proc.LogStep(3, steps_total, "allocate new storage")
5290 for idx, dev in enumerate(instance.disks):
5291 if idx not in self.op.disks:
5294 cfg.SetDiskID(dev, tgt_node)
5295 lv_names = [".disk%d_%s" % (idx, suf)
5296 for suf in ["data", "meta"]]
5297 names = _GenerateUniqueNames(self, lv_names)
5298 lv_data = objects.Disk(dev_type=constants.LD_LV, size=size,
5299 logical_id=(vgname, names[0]))
5300 lv_meta = objects.Disk(dev_type=constants.LD_LV, size=128,
5301 logical_id=(vgname, names[1]))
5302 new_lvs = [lv_data, lv_meta]
5303 old_lvs = dev.children
5304 iv_names[dev.iv_name] = (dev, old_lvs, new_lvs)
5305 info("creating new local storage on %s for %s" %
5306 (tgt_node, dev.iv_name))
5307 # we pass force_create=True to force the LVM creation
5308 for new_lv in new_lvs:
5309 _CreateBlockDev(self, tgt_node, instance, new_lv, True,
5310 _GetInstanceInfoText(instance), False)
5312 # Step: for each lv, detach+rename*2+attach
5313 self.proc.LogStep(4, steps_total, "change drbd configuration")
5314 for dev, old_lvs, new_lvs in iv_names.itervalues():
5315 info("detaching %s drbd from local storage" % dev.iv_name)
5316 result = self.rpc.call_blockdev_removechildren(tgt_node, dev, old_lvs)
5317 msg = result.RemoteFailMsg()
5319 raise errors.OpExecError("Can't detach drbd from local storage on node"
5320 " %s for device %s: %s" %
5321 (tgt_node, dev.iv_name, msg))
5323 #cfg.Update(instance)
5325 # ok, we created the new LVs, so now we know we have the needed
5326 # storage; as such, we proceed on the target node to rename
5327 # old_lv to _old, and new_lv to old_lv; note that we rename LVs
5328 # using the assumption that logical_id == physical_id (which in
5329 # turn is the unique_id on that node)
5331 # FIXME(iustin): use a better name for the replaced LVs
5332 temp_suffix = int(time.time())
5333 ren_fn = lambda d, suff: (d.physical_id[0],
5334 d.physical_id[1] + "_replaced-%s" % suff)
5335 # build the rename list based on what LVs exist on the node
5337 for to_ren in old_lvs:
5338 result = self.rpc.call_blockdev_find(tgt_node, to_ren)
5339 if not result.RemoteFailMsg() and result.payload:
5341 rlist.append((to_ren, ren_fn(to_ren, temp_suffix)))
5343 info("renaming the old LVs on the target node")
5344 result = self.rpc.call_blockdev_rename(tgt_node, rlist)
5345 msg = result.RemoteFailMsg()
5347 raise errors.OpExecError("Can't rename old LVs on node %s: %s" %
5349 # now we rename the new LVs to the old LVs
5350 info("renaming the new LVs on the target node")
5351 rlist = [(new, old.physical_id) for old, new in zip(old_lvs, new_lvs)]
5352 result = self.rpc.call_blockdev_rename(tgt_node, rlist)
5353 msg = result.RemoteFailMsg()
5355 raise errors.OpExecError("Can't rename new LVs on node %s: %s" %
5358 for old, new in zip(old_lvs, new_lvs):
5359 new.logical_id = old.logical_id
5360 cfg.SetDiskID(new, tgt_node)
5362 for disk in old_lvs:
5363 disk.logical_id = ren_fn(disk, temp_suffix)
5364 cfg.SetDiskID(disk, tgt_node)
5366 # now that the new lvs have the old name, we can add them to the device
5367 info("adding new mirror component on %s" % tgt_node)
5368 result = self.rpc.call_blockdev_addchildren(tgt_node, dev, new_lvs)
5369 msg = result.RemoteFailMsg()
5371 for new_lv in new_lvs:
5372 msg = self.rpc.call_blockdev_remove(tgt_node, new_lv).RemoteFailMsg()
5374 warning("Can't rollback device %s: %s", dev, msg,
5375 hint="cleanup manually the unused logical volumes")
5376 raise errors.OpExecError("Can't add local storage to drbd: %s" % msg)
5378 dev.children = new_lvs
5379 cfg.Update(instance)
5381 # Step: wait for sync
5383 # this can fail as the old devices are degraded and _WaitForSync
5384 # does a combined result over all disks, so we don't check its
5386 self.proc.LogStep(5, steps_total, "sync devices")
5387 _WaitForSync(self, instance, unlock=True)
5389 # so check manually all the devices
5390 for name, (dev, old_lvs, new_lvs) in iv_names.iteritems():
5391 cfg.SetDiskID(dev, instance.primary_node)
5392 result = self.rpc.call_blockdev_find(instance.primary_node, dev)
5393 msg = result.RemoteFailMsg()
5394 if not msg and not result.payload:
5395 msg = "disk not found"
5397 raise errors.OpExecError("Can't find DRBD device %s: %s" %
5399 if result.payload[5]:
5400 raise errors.OpExecError("DRBD device %s is degraded!" % name)
5402 # Step: remove old storage
5403 self.proc.LogStep(6, steps_total, "removing old storage")
5404 for name, (dev, old_lvs, new_lvs) in iv_names.iteritems():
5405 info("remove logical volumes for %s" % name)
5407 cfg.SetDiskID(lv, tgt_node)
5408 msg = self.rpc.call_blockdev_remove(tgt_node, lv).RemoteFailMsg()
5410 warning("Can't remove old LV: %s" % msg,
5411 hint="manually remove unused LVs")
5414 def _ExecD8Secondary(self, feedback_fn):
5415 """Replace the secondary node for drbd8.
5417 The algorithm for replace is quite complicated:
5418 - for all disks of the instance:
5419 - create new LVs on the new node with same names
5420 - shutdown the drbd device on the old secondary
5421 - disconnect the drbd network on the primary
5422 - create the drbd device on the new secondary
5423 - network attach the drbd on the primary, using an artifice:
5424 the drbd code for Attach() will connect to the network if it
5425 finds a device which is connected to the good local disks but
5427 - wait for sync across all devices
5428 - remove all disks from the old secondary
5430 Failures are not very well handled.
5434 warning, info = (self.proc.LogWarning, self.proc.LogInfo)
5435 instance = self.instance
5439 old_node = self.tgt_node
5440 new_node = self.new_node
5441 pri_node = instance.primary_node
5443 old_node: self.cfg.GetNodeInfo(old_node).secondary_ip,
5444 new_node: self.cfg.GetNodeInfo(new_node).secondary_ip,
5445 pri_node: self.cfg.GetNodeInfo(pri_node).secondary_ip,
5448 # Step: check device activation
5449 self.proc.LogStep(1, steps_total, "check device existence")
5450 info("checking volume groups")
5451 my_vg = cfg.GetVGName()
5452 results = self.rpc.call_vg_list([pri_node, new_node])
5453 for node in pri_node, new_node:
5455 msg = res.RemoteFailMsg()
5457 raise errors.OpExecError("Error checking node %s: %s" % (node, msg))
5458 if my_vg not in res.payload:
5459 raise errors.OpExecError("Volume group '%s' not found on %s" %
5461 for idx, dev in enumerate(instance.disks):
5462 if idx not in self.op.disks:
5464 info("checking disk/%d on %s" % (idx, pri_node))
5465 cfg.SetDiskID(dev, pri_node)
5466 result = self.rpc.call_blockdev_find(pri_node, dev)
5467 msg = result.RemoteFailMsg()
5468 if not msg and not result.payload:
5469 msg = "disk not found"
5471 raise errors.OpExecError("Can't find disk/%d on node %s: %s" %
5472 (idx, pri_node, msg))
5474 # Step: check other node consistency
5475 self.proc.LogStep(2, steps_total, "check peer consistency")
5476 for idx, dev in enumerate(instance.disks):
5477 if idx not in self.op.disks:
5479 info("checking disk/%d consistency on %s" % (idx, pri_node))
5480 if not _CheckDiskConsistency(self, dev, pri_node, True, ldisk=True):
5481 raise errors.OpExecError("Primary node (%s) has degraded storage,"
5482 " unsafe to replace the secondary" %
5485 # Step: create new storage
5486 self.proc.LogStep(3, steps_total, "allocate new storage")
5487 for idx, dev in enumerate(instance.disks):
5488 info("adding new local storage on %s for disk/%d" %
5490 # we pass force_create=True to force LVM creation
5491 for new_lv in dev.children:
5492 _CreateBlockDev(self, new_node, instance, new_lv, True,
5493 _GetInstanceInfoText(instance), False)
5495 # Step 4: dbrd minors and drbd setups changes
5496 # after this, we must manually remove the drbd minors on both the
5497 # error and the success paths
5498 minors = cfg.AllocateDRBDMinor([new_node for dev in instance.disks],
5500 logging.debug("Allocated minors %s" % (minors,))
5501 self.proc.LogStep(4, steps_total, "changing drbd configuration")
5502 for idx, (dev, new_minor) in enumerate(zip(instance.disks, minors)):
5504 info("activating a new drbd on %s for disk/%d" % (new_node, idx))
5505 # create new devices on new_node; note that we create two IDs:
5506 # one without port, so the drbd will be activated without
5507 # networking information on the new node at this stage, and one
5508 # with network, for the latter activation in step 4
5509 (o_node1, o_node2, o_port, o_minor1, o_minor2, o_secret) = dev.logical_id
5510 if pri_node == o_node1:
5515 new_alone_id = (pri_node, new_node, None, p_minor, new_minor, o_secret)
5516 new_net_id = (pri_node, new_node, o_port, p_minor, new_minor, o_secret)
5518 iv_names[idx] = (dev, dev.children, new_net_id)
5519 logging.debug("Allocated new_minor: %s, new_logical_id: %s", new_minor,
5521 new_drbd = objects.Disk(dev_type=constants.LD_DRBD8,
5522 logical_id=new_alone_id,
5523 children=dev.children)
5525 _CreateSingleBlockDev(self, new_node, instance, new_drbd,
5526 _GetInstanceInfoText(instance), False)
5527 except errors.GenericError:
5528 self.cfg.ReleaseDRBDMinors(instance.name)
5531 for idx, dev in enumerate(instance.disks):
5532 # we have new devices, shutdown the drbd on the old secondary
5533 info("shutting down drbd for disk/%d on old node" % idx)
5534 cfg.SetDiskID(dev, old_node)
5535 msg = self.rpc.call_blockdev_shutdown(old_node, dev).RemoteFailMsg()
5537 warning("Failed to shutdown drbd for disk/%d on old node: %s" %
5539 hint="Please cleanup this device manually as soon as possible")
5541 info("detaching primary drbds from the network (=> standalone)")
5542 result = self.rpc.call_drbd_disconnect_net([pri_node], nodes_ip,
5543 instance.disks)[pri_node]
5545 msg = result.RemoteFailMsg()
5547 # detaches didn't succeed (unlikely)
5548 self.cfg.ReleaseDRBDMinors(instance.name)
5549 raise errors.OpExecError("Can't detach the disks from the network on"
5550 " old node: %s" % (msg,))
5552 # if we managed to detach at least one, we update all the disks of
5553 # the instance to point to the new secondary
5554 info("updating instance configuration")
5555 for dev, _, new_logical_id in iv_names.itervalues():
5556 dev.logical_id = new_logical_id
5557 cfg.SetDiskID(dev, pri_node)
5558 cfg.Update(instance)
5560 # and now perform the drbd attach
5561 info("attaching primary drbds to new secondary (standalone => connected)")
5562 result = self.rpc.call_drbd_attach_net([pri_node, new_node], nodes_ip,
5563 instance.disks, instance.name,
5565 for to_node, to_result in result.items():
5566 msg = to_result.RemoteFailMsg()
5568 warning("can't attach drbd disks on node %s: %s", to_node, msg,
5569 hint="please do a gnt-instance info to see the"
5572 # this can fail as the old devices are degraded and _WaitForSync
5573 # does a combined result over all disks, so we don't check its
5575 self.proc.LogStep(5, steps_total, "sync devices")
5576 _WaitForSync(self, instance, unlock=True)
5578 # so check manually all the devices
5579 for idx, (dev, old_lvs, _) in iv_names.iteritems():
5580 cfg.SetDiskID(dev, pri_node)
5581 result = self.rpc.call_blockdev_find(pri_node, dev)
5582 msg = result.RemoteFailMsg()
5583 if not msg and not result.payload:
5584 msg = "disk not found"
5586 raise errors.OpExecError("Can't find DRBD device disk/%d: %s" %
5588 if result.payload[5]:
5589 raise errors.OpExecError("DRBD device disk/%d is degraded!" % idx)
5591 self.proc.LogStep(6, steps_total, "removing old storage")
5592 for idx, (dev, old_lvs, _) in iv_names.iteritems():
5593 info("remove logical volumes for disk/%d" % idx)
5595 cfg.SetDiskID(lv, old_node)
5596 msg = self.rpc.call_blockdev_remove(old_node, lv).RemoteFailMsg()
5598 warning("Can't remove LV on old secondary: %s", msg,
5599 hint="Cleanup stale volumes by hand")
5601 def Exec(self, feedback_fn):
5602 """Execute disk replacement.
5604 This dispatches the disk replacement to the appropriate handler.
5607 instance = self.instance
5609 # Activate the instance disks if we're replacing them on a down instance
5610 if not instance.admin_up:
5611 _StartInstanceDisks(self, instance, True)
5613 if self.op.mode == constants.REPLACE_DISK_CHG:
5614 fn = self._ExecD8Secondary
5616 fn = self._ExecD8DiskOnly
5618 ret = fn(feedback_fn)
5620 # Deactivate the instance disks if we're replacing them on a down instance
5621 if not instance.admin_up:
5622 _SafeShutdownInstanceDisks(self, instance)
5627 class LUGrowDisk(LogicalUnit):
5628 """Grow a disk of an instance.
5632 HTYPE = constants.HTYPE_INSTANCE
5633 _OP_REQP = ["instance_name", "disk", "amount", "wait_for_sync"]
5636 def ExpandNames(self):
5637 self._ExpandAndLockInstance()
5638 self.needed_locks[locking.LEVEL_NODE] = []
5639 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5641 def DeclareLocks(self, level):
5642 if level == locking.LEVEL_NODE:
5643 self._LockInstancesNodes()
5645 def BuildHooksEnv(self):
5648 This runs on the master, the primary and all the secondaries.
5652 "DISK": self.op.disk,
5653 "AMOUNT": self.op.amount,
5655 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
5657 self.cfg.GetMasterNode(),
5658 self.instance.primary_node,
5662 def CheckPrereq(self):
5663 """Check prerequisites.
5665 This checks that the instance is in the cluster.
5668 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
5669 assert instance is not None, \
5670 "Cannot retrieve locked instance %s" % self.op.instance_name
5671 nodenames = list(instance.all_nodes)
5672 for node in nodenames:
5673 _CheckNodeOnline(self, node)
5676 self.instance = instance
5678 if instance.disk_template not in (constants.DT_PLAIN, constants.DT_DRBD8):
5679 raise errors.OpPrereqError("Instance's disk layout does not support"
5682 self.disk = instance.FindDisk(self.op.disk)
5684 nodeinfo = self.rpc.call_node_info(nodenames, self.cfg.GetVGName(),
5685 instance.hypervisor)
5686 for node in nodenames:
5687 info = nodeinfo[node]
5688 msg = info.RemoteFailMsg()
5690 raise errors.OpPrereqError("Cannot get current information"
5691 " from node %s:" % (node, msg))
5692 vg_free = info.payload.get('vg_free', None)
5693 if not isinstance(vg_free, int):
5694 raise errors.OpPrereqError("Can't compute free disk space on"
5696 if self.op.amount > vg_free:
5697 raise errors.OpPrereqError("Not enough disk space on target node %s:"
5698 " %d MiB available, %d MiB required" %
5699 (node, vg_free, self.op.amount))
5701 def Exec(self, feedback_fn):
5702 """Execute disk grow.
5705 instance = self.instance
5707 for node in instance.all_nodes:
5708 self.cfg.SetDiskID(disk, node)
5709 result = self.rpc.call_blockdev_grow(node, disk, self.op.amount)
5710 msg = result.RemoteFailMsg()
5712 raise errors.OpExecError("Grow request failed to node %s: %s" %
5714 disk.RecordGrow(self.op.amount)
5715 self.cfg.Update(instance)
5716 if self.op.wait_for_sync:
5717 disk_abort = not _WaitForSync(self, instance)
5719 self.proc.LogWarning("Warning: disk sync-ing has not returned a good"
5720 " status.\nPlease check the instance.")
5723 class LUQueryInstanceData(NoHooksLU):
5724 """Query runtime instance data.
5727 _OP_REQP = ["instances", "static"]
5730 def ExpandNames(self):
5731 self.needed_locks = {}
5732 self.share_locks = dict(((i, 1) for i in locking.LEVELS))
5734 if not isinstance(self.op.instances, list):
5735 raise errors.OpPrereqError("Invalid argument type 'instances'")
5737 if self.op.instances:
5738 self.wanted_names = []
5739 for name in self.op.instances:
5740 full_name = self.cfg.ExpandInstanceName(name)
5741 if full_name is None:
5742 raise errors.OpPrereqError("Instance '%s' not known" % name)
5743 self.wanted_names.append(full_name)
5744 self.needed_locks[locking.LEVEL_INSTANCE] = self.wanted_names
5746 self.wanted_names = None
5747 self.needed_locks[locking.LEVEL_INSTANCE] = locking.ALL_SET
5749 self.needed_locks[locking.LEVEL_NODE] = []
5750 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5752 def DeclareLocks(self, level):
5753 if level == locking.LEVEL_NODE:
5754 self._LockInstancesNodes()
5756 def CheckPrereq(self):
5757 """Check prerequisites.
5759 This only checks the optional instance list against the existing names.
5762 if self.wanted_names is None:
5763 self.wanted_names = self.acquired_locks[locking.LEVEL_INSTANCE]
5765 self.wanted_instances = [self.cfg.GetInstanceInfo(name) for name
5766 in self.wanted_names]
5769 def _ComputeDiskStatus(self, instance, snode, dev):
5770 """Compute block device status.
5773 static = self.op.static
5775 self.cfg.SetDiskID(dev, instance.primary_node)
5776 dev_pstatus = self.rpc.call_blockdev_find(instance.primary_node, dev)
5777 if dev_pstatus.offline:
5780 msg = dev_pstatus.RemoteFailMsg()
5782 raise errors.OpExecError("Can't compute disk status for %s: %s" %
5783 (instance.name, msg))
5784 dev_pstatus = dev_pstatus.payload
5788 if dev.dev_type in constants.LDS_DRBD:
5789 # we change the snode then (otherwise we use the one passed in)
5790 if dev.logical_id[0] == instance.primary_node:
5791 snode = dev.logical_id[1]
5793 snode = dev.logical_id[0]
5795 if snode and not static:
5796 self.cfg.SetDiskID(dev, snode)
5797 dev_sstatus = self.rpc.call_blockdev_find(snode, dev)
5798 if dev_sstatus.offline:
5801 msg = dev_sstatus.RemoteFailMsg()
5803 raise errors.OpExecError("Can't compute disk status for %s: %s" %
5804 (instance.name, msg))
5805 dev_sstatus = dev_sstatus.payload
5810 dev_children = [self._ComputeDiskStatus(instance, snode, child)
5811 for child in dev.children]
5816 "iv_name": dev.iv_name,
5817 "dev_type": dev.dev_type,
5818 "logical_id": dev.logical_id,
5819 "physical_id": dev.physical_id,
5820 "pstatus": dev_pstatus,
5821 "sstatus": dev_sstatus,
5822 "children": dev_children,
5828 def Exec(self, feedback_fn):
5829 """Gather and return data"""
5832 cluster = self.cfg.GetClusterInfo()
5834 for instance in self.wanted_instances:
5835 if not self.op.static:
5836 remote_info = self.rpc.call_instance_info(instance.primary_node,
5838 instance.hypervisor)
5839 msg = remote_info.RemoteFailMsg()
5841 raise errors.OpExecError("Error checking node %s: %s" %
5842 (instance.primary_node, msg))
5843 remote_info = remote_info.payload
5844 if remote_info and "state" in remote_info:
5847 remote_state = "down"
5850 if instance.admin_up:
5853 config_state = "down"
5855 disks = [self._ComputeDiskStatus(instance, None, device)
5856 for device in instance.disks]
5859 "name": instance.name,
5860 "config_state": config_state,
5861 "run_state": remote_state,
5862 "pnode": instance.primary_node,
5863 "snodes": instance.secondary_nodes,
5865 "nics": [(nic.mac, nic.ip, nic.bridge) for nic in instance.nics],
5867 "hypervisor": instance.hypervisor,
5868 "network_port": instance.network_port,
5869 "hv_instance": instance.hvparams,
5870 "hv_actual": cluster.FillHV(instance),
5871 "be_instance": instance.beparams,
5872 "be_actual": cluster.FillBE(instance),
5875 result[instance.name] = idict
5880 class LUSetInstanceParams(LogicalUnit):
5881 """Modifies an instances's parameters.
5884 HPATH = "instance-modify"
5885 HTYPE = constants.HTYPE_INSTANCE
5886 _OP_REQP = ["instance_name"]
5889 def CheckArguments(self):
5890 if not hasattr(self.op, 'nics'):
5892 if not hasattr(self.op, 'disks'):
5894 if not hasattr(self.op, 'beparams'):
5895 self.op.beparams = {}
5896 if not hasattr(self.op, 'hvparams'):
5897 self.op.hvparams = {}
5898 self.op.force = getattr(self.op, "force", False)
5899 if not (self.op.nics or self.op.disks or
5900 self.op.hvparams or self.op.beparams):
5901 raise errors.OpPrereqError("No changes submitted")
5905 for disk_op, disk_dict in self.op.disks:
5906 if disk_op == constants.DDM_REMOVE:
5909 elif disk_op == constants.DDM_ADD:
5912 if not isinstance(disk_op, int):
5913 raise errors.OpPrereqError("Invalid disk index")
5914 if disk_op == constants.DDM_ADD:
5915 mode = disk_dict.setdefault('mode', constants.DISK_RDWR)
5916 if mode not in constants.DISK_ACCESS_SET:
5917 raise errors.OpPrereqError("Invalid disk access mode '%s'" % mode)
5918 size = disk_dict.get('size', None)
5920 raise errors.OpPrereqError("Required disk parameter size missing")
5923 except ValueError, err:
5924 raise errors.OpPrereqError("Invalid disk size parameter: %s" %
5926 disk_dict['size'] = size
5928 # modification of disk
5929 if 'size' in disk_dict:
5930 raise errors.OpPrereqError("Disk size change not possible, use"
5933 if disk_addremove > 1:
5934 raise errors.OpPrereqError("Only one disk add or remove operation"
5935 " supported at a time")
5939 for nic_op, nic_dict in self.op.nics:
5940 if nic_op == constants.DDM_REMOVE:
5943 elif nic_op == constants.DDM_ADD:
5946 if not isinstance(nic_op, int):
5947 raise errors.OpPrereqError("Invalid nic index")
5949 # nic_dict should be a dict
5950 nic_ip = nic_dict.get('ip', None)
5951 if nic_ip is not None:
5952 if nic_ip.lower() == constants.VALUE_NONE:
5953 nic_dict['ip'] = None
5955 if not utils.IsValidIP(nic_ip):
5956 raise errors.OpPrereqError("Invalid IP address '%s'" % nic_ip)
5958 nic_bridge = nic_dict.get('bridge', None)
5959 nic_link = nic_dict.get('link', None)
5960 if nic_bridge and nic_link:
5961 raise errors.OpPrereqError("Cannot pass 'bridge' and 'link' at the same time")
5962 elif nic_bridge and nic_bridge.lower() == constants.VALUE_NONE:
5963 nic_dict['bridge'] = None
5964 elif nic_link and nic_link.lower() == constants.VALUE_NONE:
5965 nic_dict['link'] = None
5967 if nic_op == constants.DDM_ADD:
5968 nic_mac = nic_dict.get('mac', None)
5970 nic_dict['mac'] = constants.VALUE_AUTO
5972 if 'mac' in nic_dict:
5973 nic_mac = nic_dict['mac']
5974 if nic_mac not in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
5975 if not utils.IsValidMac(nic_mac):
5976 raise errors.OpPrereqError("Invalid MAC address %s" % nic_mac)
5977 if nic_op != constants.DDM_ADD and nic_mac == constants.VALUE_AUTO:
5978 raise errors.OpPrereqError("'auto' is not a valid MAC address when"
5979 " modifying an existing nic")
5981 if nic_addremove > 1:
5982 raise errors.OpPrereqError("Only one NIC add or remove operation"
5983 " supported at a time")
5985 def ExpandNames(self):
5986 self._ExpandAndLockInstance()
5987 self.needed_locks[locking.LEVEL_NODE] = []
5988 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
5990 def DeclareLocks(self, level):
5991 if level == locking.LEVEL_NODE:
5992 self._LockInstancesNodes()
5994 def BuildHooksEnv(self):
5997 This runs on the master, primary and secondaries.
6001 if constants.BE_MEMORY in self.be_new:
6002 args['memory'] = self.be_new[constants.BE_MEMORY]
6003 if constants.BE_VCPUS in self.be_new:
6004 args['vcpus'] = self.be_new[constants.BE_VCPUS]
6005 # TODO: export disk changes. Note: _BuildInstanceHookEnv* don't export disk
6006 # information at all.
6009 nic_override = dict(self.op.nics)
6010 c_nicparams = self.cluster.nicparams[constants.PP_DEFAULT]
6011 for idx, nic in enumerate(self.instance.nics):
6012 if idx in nic_override:
6013 this_nic_override = nic_override[idx]
6015 this_nic_override = {}
6016 if 'ip' in this_nic_override:
6017 ip = this_nic_override['ip']
6020 if 'mac' in this_nic_override:
6021 mac = this_nic_override['mac']
6024 if idx in self.nic_pnew:
6025 nicparams = self.nic_pnew[idx]
6027 nicparams = objects.FillDict(c_nicparams, nic.nicparams)
6028 mode = nicparams[constants.NIC_MODE]
6029 link = nicparams[constants.NIC_LINK]
6030 args['nics'].append((ip, mac, mode, link))
6031 if constants.DDM_ADD in nic_override:
6032 ip = nic_override[constants.DDM_ADD].get('ip', None)
6033 mac = nic_override[constants.DDM_ADD]['mac']
6034 nicparams = self.nic_pnew[constants.DDM_ADD]
6035 mode = nicparams[constants.NIC_MODE]
6036 link = nicparams[constants.NIC_LINK]
6037 args['nics'].append((ip, mac, mode, link))
6038 elif constants.DDM_REMOVE in nic_override:
6039 del args['nics'][-1]
6041 env = _BuildInstanceHookEnvByObject(self, self.instance, override=args)
6042 nl = [self.cfg.GetMasterNode()] + list(self.instance.all_nodes)
6045 def _GetUpdatedParams(self, old_params, update_dict,
6046 default_values, parameter_types):
6047 """Return the new params dict for the given params.
6049 @type old_params: dict
6050 @type old_params: old parameters
6051 @type update_dict: dict
6052 @type update_dict: dict containing new parameter values,
6053 or constants.VALUE_DEFAULT to reset the
6054 parameter to its default value
6055 @type default_values: dict
6056 @param default_values: default values for the filled parameters
6057 @type parameter_types: dict
6058 @param parameter_types: dict mapping target dict keys to types
6059 in constants.ENFORCEABLE_TYPES
6060 @rtype: (dict, dict)
6061 @return: (new_parameters, filled_parameters)
6064 params_copy = copy.deepcopy(old_params)
6065 for key, val in update_dict.iteritems():
6066 if val == constants.VALUE_DEFAULT:
6068 del params_copy[key]
6072 params_copy[key] = val
6073 utils.ForceDictType(params_copy, parameter_types)
6074 params_filled = objects.FillDict(default_values, params_copy)
6075 return (params_copy, params_filled)
6077 def CheckPrereq(self):
6078 """Check prerequisites.
6080 This only checks the instance list against the existing names.
6083 force = self.force = self.op.force
6085 # checking the new params on the primary/secondary nodes
6087 instance = self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
6088 cluster = self.cluster = self.cfg.GetClusterInfo()
6089 assert self.instance is not None, \
6090 "Cannot retrieve locked instance %s" % self.op.instance_name
6091 pnode = instance.primary_node
6092 nodelist = list(instance.all_nodes)
6094 # hvparams processing
6095 if self.op.hvparams:
6096 i_hvdict, hv_new = self._GetUpdatedParams(
6097 instance.hvparams, self.op.hvparams,
6098 cluster.hvparams[instance.hypervisor],
6099 constants.HVS_PARAMETER_TYPES)
6101 hypervisor.GetHypervisor(
6102 instance.hypervisor).CheckParameterSyntax(hv_new)
6103 _CheckHVParams(self, nodelist, instance.hypervisor, hv_new)
6104 self.hv_new = hv_new # the new actual values
6105 self.hv_inst = i_hvdict # the new dict (without defaults)
6107 self.hv_new = self.hv_inst = {}
6109 # beparams processing
6110 if self.op.beparams:
6111 i_bedict, be_new = self._GetUpdatedParams(
6112 instance.beparams, self.op.beparams,
6113 cluster.beparams[constants.PP_DEFAULT],
6114 constants.BES_PARAMETER_TYPES)
6115 self.be_new = be_new # the new actual values
6116 self.be_inst = i_bedict # the new dict (without defaults)
6118 self.be_new = self.be_inst = {}
6122 if constants.BE_MEMORY in self.op.beparams and not self.force:
6123 mem_check_list = [pnode]
6124 if be_new[constants.BE_AUTO_BALANCE]:
6125 # either we changed auto_balance to yes or it was from before
6126 mem_check_list.extend(instance.secondary_nodes)
6127 instance_info = self.rpc.call_instance_info(pnode, instance.name,
6128 instance.hypervisor)
6129 nodeinfo = self.rpc.call_node_info(mem_check_list, self.cfg.GetVGName(),
6130 instance.hypervisor)
6131 pninfo = nodeinfo[pnode]
6132 msg = pninfo.RemoteFailMsg()
6134 # Assume the primary node is unreachable and go ahead
6135 self.warn.append("Can't get info from primary node %s: %s" %
6137 elif not isinstance(pninfo.payload.get('memory_free', None), int):
6138 self.warn.append("Node data from primary node %s doesn't contain"
6139 " free memory information" % pnode)
6140 elif instance_info.RemoteFailMsg():
6141 self.warn.append("Can't get instance runtime information: %s" %
6142 instance_info.RemoteFailMsg())
6144 if instance_info.payload:
6145 current_mem = int(instance_info.payload['memory'])
6147 # Assume instance not running
6148 # (there is a slight race condition here, but it's not very probable,
6149 # and we have no other way to check)
6151 miss_mem = (be_new[constants.BE_MEMORY] - current_mem -
6152 pninfo.payload['memory_free'])
6154 raise errors.OpPrereqError("This change will prevent the instance"
6155 " from starting, due to %d MB of memory"
6156 " missing on its primary node" % miss_mem)
6158 if be_new[constants.BE_AUTO_BALANCE]:
6159 for node, nres in nodeinfo.items():
6160 if node not in instance.secondary_nodes:
6162 msg = nres.RemoteFailMsg()
6164 self.warn.append("Can't get info from secondary node %s: %s" %
6166 elif not isinstance(nres.payload.get('memory_free', None), int):
6167 self.warn.append("Secondary node %s didn't return free"
6168 " memory information" % node)
6169 elif be_new[constants.BE_MEMORY] > nres.payload['memory_free']:
6170 self.warn.append("Not enough memory to failover instance to"
6171 " secondary node %s" % node)
6176 for nic_op, nic_dict in self.op.nics:
6177 if nic_op == constants.DDM_REMOVE:
6178 if not instance.nics:
6179 raise errors.OpPrereqError("Instance has no NICs, cannot remove")
6181 if nic_op != constants.DDM_ADD:
6183 if nic_op < 0 or nic_op >= len(instance.nics):
6184 raise errors.OpPrereqError("Invalid NIC index %s, valid values"
6186 (nic_op, len(instance.nics)))
6187 old_nic_params = instance.nics[nic_op].nicparams
6188 old_nic_ip = instance.nics[nic_op].ip
6193 update_params_dict = dict([(key, nic_dict[key])
6194 for key in constants.NICS_PARAMETERS
6195 if key in nic_dict])
6197 if 'bridge' in nic_dict:
6198 update_params_dict[constants.NIC_LINK] = nic_dict['bridge']
6200 new_nic_params, new_filled_nic_params = \
6201 self._GetUpdatedParams(old_nic_params, update_params_dict,
6202 cluster.nicparams[constants.PP_DEFAULT],
6203 constants.NICS_PARAMETER_TYPES)
6204 objects.NIC.CheckParameterSyntax(new_filled_nic_params)
6205 self.nic_pinst[nic_op] = new_nic_params
6206 self.nic_pnew[nic_op] = new_filled_nic_params
6207 new_nic_mode = new_filled_nic_params[constants.NIC_MODE]
6209 if new_nic_mode == constants.NIC_MODE_BRIDGED:
6210 nic_bridge = new_filled_nic_params[constants.NIC_LINK]
6211 result = self.rpc.call_bridges_exist(pnode, [nic_bridge])
6212 msg = result.RemoteFailMsg()
6214 msg = "Error checking bridges on node %s: %s" % (pnode, msg)
6216 self.warn.append(msg)
6218 raise errors.OpPrereqError(msg)
6219 if new_nic_mode == constants.NIC_MODE_ROUTED:
6220 if 'ip' in nic_dict:
6221 nic_ip = nic_dict['ip']
6225 raise errors.OpPrereqError('Cannot set the nic ip to None'
6227 if 'mac' in nic_dict:
6228 nic_mac = nic_dict['mac']
6230 raise errors.OpPrereqError('Cannot set the nic mac to None')
6231 elif nic_mac in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
6232 # otherwise generate the mac
6233 nic_dict['mac'] = self.cfg.GenerateMAC()
6235 # or validate/reserve the current one
6236 if self.cfg.IsMacInUse(nic_mac):
6237 raise errors.OpPrereqError("MAC address %s already in use"
6238 " in cluster" % nic_mac)
6241 if self.op.disks and instance.disk_template == constants.DT_DISKLESS:
6242 raise errors.OpPrereqError("Disk operations not supported for"
6243 " diskless instances")
6244 for disk_op, disk_dict in self.op.disks:
6245 if disk_op == constants.DDM_REMOVE:
6246 if len(instance.disks) == 1:
6247 raise errors.OpPrereqError("Cannot remove the last disk of"
6249 ins_l = self.rpc.call_instance_list([pnode], [instance.hypervisor])
6250 ins_l = ins_l[pnode]
6251 msg = ins_l.RemoteFailMsg()
6253 raise errors.OpPrereqError("Can't contact node %s: %s" %
6255 if instance.name in ins_l.payload:
6256 raise errors.OpPrereqError("Instance is running, can't remove"
6259 if (disk_op == constants.DDM_ADD and
6260 len(instance.nics) >= constants.MAX_DISKS):
6261 raise errors.OpPrereqError("Instance has too many disks (%d), cannot"
6262 " add more" % constants.MAX_DISKS)
6263 if disk_op not in (constants.DDM_ADD, constants.DDM_REMOVE):
6265 if disk_op < 0 or disk_op >= len(instance.disks):
6266 raise errors.OpPrereqError("Invalid disk index %s, valid values"
6268 (disk_op, len(instance.disks)))
6272 def Exec(self, feedback_fn):
6273 """Modifies an instance.
6275 All parameters take effect only at the next restart of the instance.
6278 # Process here the warnings from CheckPrereq, as we don't have a
6279 # feedback_fn there.
6280 for warn in self.warn:
6281 feedback_fn("WARNING: %s" % warn)
6284 instance = self.instance
6285 cluster = self.cluster
6287 for disk_op, disk_dict in self.op.disks:
6288 if disk_op == constants.DDM_REMOVE:
6289 # remove the last disk
6290 device = instance.disks.pop()
6291 device_idx = len(instance.disks)
6292 for node, disk in device.ComputeNodeTree(instance.primary_node):
6293 self.cfg.SetDiskID(disk, node)
6294 msg = self.rpc.call_blockdev_remove(node, disk).RemoteFailMsg()
6296 self.LogWarning("Could not remove disk/%d on node %s: %s,"
6297 " continuing anyway", device_idx, node, msg)
6298 result.append(("disk/%d" % device_idx, "remove"))
6299 elif disk_op == constants.DDM_ADD:
6301 if instance.disk_template == constants.DT_FILE:
6302 file_driver, file_path = instance.disks[0].logical_id
6303 file_path = os.path.dirname(file_path)
6305 file_driver = file_path = None
6306 disk_idx_base = len(instance.disks)
6307 new_disk = _GenerateDiskTemplate(self,
6308 instance.disk_template,
6309 instance.name, instance.primary_node,
6310 instance.secondary_nodes,
6315 instance.disks.append(new_disk)
6316 info = _GetInstanceInfoText(instance)
6318 logging.info("Creating volume %s for instance %s",
6319 new_disk.iv_name, instance.name)
6320 # Note: this needs to be kept in sync with _CreateDisks
6322 for node in instance.all_nodes:
6323 f_create = node == instance.primary_node
6325 _CreateBlockDev(self, node, instance, new_disk,
6326 f_create, info, f_create)
6327 except errors.OpExecError, err:
6328 self.LogWarning("Failed to create volume %s (%s) on"
6330 new_disk.iv_name, new_disk, node, err)
6331 result.append(("disk/%d" % disk_idx_base, "add:size=%s,mode=%s" %
6332 (new_disk.size, new_disk.mode)))
6334 # change a given disk
6335 instance.disks[disk_op].mode = disk_dict['mode']
6336 result.append(("disk.mode/%d" % disk_op, disk_dict['mode']))
6338 for nic_op, nic_dict in self.op.nics:
6339 if nic_op == constants.DDM_REMOVE:
6340 # remove the last nic
6341 del instance.nics[-1]
6342 result.append(("nic.%d" % len(instance.nics), "remove"))
6343 elif nic_op == constants.DDM_ADD:
6344 # mac and bridge should be set, by now
6345 mac = nic_dict['mac']
6346 ip = nic_dict.get('ip', None)
6347 nicparams = self.nic_pinst[constants.DDM_ADD]
6348 new_nic = objects.NIC(mac=mac, ip=ip, nicparams=nicparams)
6349 instance.nics.append(new_nic)
6350 result.append(("nic.%d" % (len(instance.nics) - 1),
6351 "add:mac=%s,ip=%s,mode=%s,link=%s" %
6352 (new_nic.mac, new_nic.ip,
6353 self.nic_pnew[constants.DDM_ADD][constants.NIC_MODE],
6354 self.nic_pnew[constants.DDM_ADD][constants.NIC_LINK]
6357 for key in 'mac', 'ip':
6359 setattr(instance.nics[nic_op], key, nic_dict[key])
6360 if nic_op in self.nic_pnew:
6361 instance.nics[nic_op].nicparams = self.nic_pnew[nic_op]
6362 for key, val in nic_dict.iteritems():
6363 result.append(("nic.%s/%d" % (key, nic_op), val))
6366 if self.op.hvparams:
6367 instance.hvparams = self.hv_inst
6368 for key, val in self.op.hvparams.iteritems():
6369 result.append(("hv/%s" % key, val))
6372 if self.op.beparams:
6373 instance.beparams = self.be_inst
6374 for key, val in self.op.beparams.iteritems():
6375 result.append(("be/%s" % key, val))
6377 self.cfg.Update(instance)
6382 class LUQueryExports(NoHooksLU):
6383 """Query the exports list
6386 _OP_REQP = ['nodes']
6389 def ExpandNames(self):
6390 self.needed_locks = {}
6391 self.share_locks[locking.LEVEL_NODE] = 1
6392 if not self.op.nodes:
6393 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
6395 self.needed_locks[locking.LEVEL_NODE] = \
6396 _GetWantedNodes(self, self.op.nodes)
6398 def CheckPrereq(self):
6399 """Check prerequisites.
6402 self.nodes = self.acquired_locks[locking.LEVEL_NODE]
6404 def Exec(self, feedback_fn):
6405 """Compute the list of all the exported system images.
6408 @return: a dictionary with the structure node->(export-list)
6409 where export-list is a list of the instances exported on
6413 rpcresult = self.rpc.call_export_list(self.nodes)
6415 for node in rpcresult:
6416 if rpcresult[node].RemoteFailMsg():
6417 result[node] = False
6419 result[node] = rpcresult[node].payload
6424 class LUExportInstance(LogicalUnit):
6425 """Export an instance to an image in the cluster.
6428 HPATH = "instance-export"
6429 HTYPE = constants.HTYPE_INSTANCE
6430 _OP_REQP = ["instance_name", "target_node", "shutdown"]
6433 def ExpandNames(self):
6434 self._ExpandAndLockInstance()
6435 # FIXME: lock only instance primary and destination node
6437 # Sad but true, for now we have do lock all nodes, as we don't know where
6438 # the previous export might be, and and in this LU we search for it and
6439 # remove it from its current node. In the future we could fix this by:
6440 # - making a tasklet to search (share-lock all), then create the new one,
6441 # then one to remove, after
6442 # - removing the removal operation altoghether
6443 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
6445 def DeclareLocks(self, level):
6446 """Last minute lock declaration."""
6447 # All nodes are locked anyway, so nothing to do here.
6449 def BuildHooksEnv(self):
6452 This will run on the master, primary node and target node.
6456 "EXPORT_NODE": self.op.target_node,
6457 "EXPORT_DO_SHUTDOWN": self.op.shutdown,
6459 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
6460 nl = [self.cfg.GetMasterNode(), self.instance.primary_node,
6461 self.op.target_node]
6464 def CheckPrereq(self):
6465 """Check prerequisites.
6467 This checks that the instance and node names are valid.
6470 instance_name = self.op.instance_name
6471 self.instance = self.cfg.GetInstanceInfo(instance_name)
6472 assert self.instance is not None, \
6473 "Cannot retrieve locked instance %s" % self.op.instance_name
6474 _CheckNodeOnline(self, self.instance.primary_node)
6476 self.dst_node = self.cfg.GetNodeInfo(
6477 self.cfg.ExpandNodeName(self.op.target_node))
6479 if self.dst_node is None:
6480 # This is wrong node name, not a non-locked node
6481 raise errors.OpPrereqError("Wrong node name %s" % self.op.target_node)
6482 _CheckNodeOnline(self, self.dst_node.name)
6483 _CheckNodeNotDrained(self, self.dst_node.name)
6485 # instance disk type verification
6486 for disk in self.instance.disks:
6487 if disk.dev_type == constants.LD_FILE:
6488 raise errors.OpPrereqError("Export not supported for instances with"
6489 " file-based disks")
6491 def Exec(self, feedback_fn):
6492 """Export an instance to an image in the cluster.
6495 instance = self.instance
6496 dst_node = self.dst_node
6497 src_node = instance.primary_node
6498 if self.op.shutdown:
6499 # shutdown the instance, but not the disks
6500 result = self.rpc.call_instance_shutdown(src_node, instance)
6501 msg = result.RemoteFailMsg()
6503 raise errors.OpExecError("Could not shutdown instance %s on"
6505 (instance.name, src_node, msg))
6507 vgname = self.cfg.GetVGName()
6511 # set the disks ID correctly since call_instance_start needs the
6512 # correct drbd minor to create the symlinks
6513 for disk in instance.disks:
6514 self.cfg.SetDiskID(disk, src_node)
6517 for disk in instance.disks:
6518 # result.payload will be a snapshot of an lvm leaf of the one we passed
6519 result = self.rpc.call_blockdev_snapshot(src_node, disk)
6520 msg = result.RemoteFailMsg()
6522 self.LogWarning("Could not snapshot block device %s on node %s: %s",
6523 disk.logical_id[1], src_node, msg)
6524 snap_disks.append(False)
6526 disk_id = (vgname, result.payload)
6527 new_dev = objects.Disk(dev_type=constants.LD_LV, size=disk.size,
6528 logical_id=disk_id, physical_id=disk_id,
6529 iv_name=disk.iv_name)
6530 snap_disks.append(new_dev)
6533 if self.op.shutdown and instance.admin_up:
6534 result = self.rpc.call_instance_start(src_node, instance, None, None)
6535 msg = result.RemoteFailMsg()
6537 _ShutdownInstanceDisks(self, instance)
6538 raise errors.OpExecError("Could not start instance: %s" % msg)
6540 # TODO: check for size
6542 cluster_name = self.cfg.GetClusterName()
6543 for idx, dev in enumerate(snap_disks):
6545 result = self.rpc.call_snapshot_export(src_node, dev, dst_node.name,
6546 instance, cluster_name, idx)
6547 msg = result.RemoteFailMsg()
6549 self.LogWarning("Could not export block device %s from node %s to"
6550 " node %s: %s", dev.logical_id[1], src_node,
6552 msg = self.rpc.call_blockdev_remove(src_node, dev).RemoteFailMsg()
6554 self.LogWarning("Could not remove snapshot block device %s from node"
6555 " %s: %s", dev.logical_id[1], src_node, msg)
6557 result = self.rpc.call_finalize_export(dst_node.name, instance, snap_disks)
6558 msg = result.RemoteFailMsg()
6560 self.LogWarning("Could not finalize export for instance %s"
6561 " on node %s: %s", instance.name, dst_node.name, msg)
6563 nodelist = self.cfg.GetNodeList()
6564 nodelist.remove(dst_node.name)
6566 # on one-node clusters nodelist will be empty after the removal
6567 # if we proceed the backup would be removed because OpQueryExports
6568 # substitutes an empty list with the full cluster node list.
6569 iname = instance.name
6571 exportlist = self.rpc.call_export_list(nodelist)
6572 for node in exportlist:
6573 if exportlist[node].RemoteFailMsg():
6575 if iname in exportlist[node].payload:
6576 msg = self.rpc.call_export_remove(node, iname).RemoteFailMsg()
6578 self.LogWarning("Could not remove older export for instance %s"
6579 " on node %s: %s", iname, node, msg)
6582 class LURemoveExport(NoHooksLU):
6583 """Remove exports related to the named instance.
6586 _OP_REQP = ["instance_name"]
6589 def ExpandNames(self):
6590 self.needed_locks = {}
6591 # We need all nodes to be locked in order for RemoveExport to work, but we
6592 # don't need to lock the instance itself, as nothing will happen to it (and
6593 # we can remove exports also for a removed instance)
6594 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
6596 def CheckPrereq(self):
6597 """Check prerequisites.
6601 def Exec(self, feedback_fn):
6602 """Remove any export.
6605 instance_name = self.cfg.ExpandInstanceName(self.op.instance_name)
6606 # If the instance was not found we'll try with the name that was passed in.
6607 # This will only work if it was an FQDN, though.
6609 if not instance_name:
6611 instance_name = self.op.instance_name
6613 locked_nodes = self.acquired_locks[locking.LEVEL_NODE]
6614 exportlist = self.rpc.call_export_list(locked_nodes)
6616 for node in exportlist:
6617 msg = exportlist[node].RemoteFailMsg()
6619 self.LogWarning("Failed to query node %s (continuing): %s", node, msg)
6621 if instance_name in exportlist[node].payload:
6623 result = self.rpc.call_export_remove(node, instance_name)
6624 msg = result.RemoteFailMsg()
6626 logging.error("Could not remove export for instance %s"
6627 " on node %s: %s", instance_name, node, msg)
6629 if fqdn_warn and not found:
6630 feedback_fn("Export not found. If trying to remove an export belonging"
6631 " to a deleted instance please use its Fully Qualified"
6635 class TagsLU(NoHooksLU):
6638 This is an abstract class which is the parent of all the other tags LUs.
6642 def ExpandNames(self):
6643 self.needed_locks = {}
6644 if self.op.kind == constants.TAG_NODE:
6645 name = self.cfg.ExpandNodeName(self.op.name)
6647 raise errors.OpPrereqError("Invalid node name (%s)" %
6650 self.needed_locks[locking.LEVEL_NODE] = name
6651 elif self.op.kind == constants.TAG_INSTANCE:
6652 name = self.cfg.ExpandInstanceName(self.op.name)
6654 raise errors.OpPrereqError("Invalid instance name (%s)" %
6657 self.needed_locks[locking.LEVEL_INSTANCE] = name
6659 def CheckPrereq(self):
6660 """Check prerequisites.
6663 if self.op.kind == constants.TAG_CLUSTER:
6664 self.target = self.cfg.GetClusterInfo()
6665 elif self.op.kind == constants.TAG_NODE:
6666 self.target = self.cfg.GetNodeInfo(self.op.name)
6667 elif self.op.kind == constants.TAG_INSTANCE:
6668 self.target = self.cfg.GetInstanceInfo(self.op.name)
6670 raise errors.OpPrereqError("Wrong tag type requested (%s)" %
6674 class LUGetTags(TagsLU):
6675 """Returns the tags of a given object.
6678 _OP_REQP = ["kind", "name"]
6681 def Exec(self, feedback_fn):
6682 """Returns the tag list.
6685 return list(self.target.GetTags())
6688 class LUSearchTags(NoHooksLU):
6689 """Searches the tags for a given pattern.
6692 _OP_REQP = ["pattern"]
6695 def ExpandNames(self):
6696 self.needed_locks = {}
6698 def CheckPrereq(self):
6699 """Check prerequisites.
6701 This checks the pattern passed for validity by compiling it.
6705 self.re = re.compile(self.op.pattern)
6706 except re.error, err:
6707 raise errors.OpPrereqError("Invalid search pattern '%s': %s" %
6708 (self.op.pattern, err))
6710 def Exec(self, feedback_fn):
6711 """Returns the tag list.
6715 tgts = [("/cluster", cfg.GetClusterInfo())]
6716 ilist = cfg.GetAllInstancesInfo().values()
6717 tgts.extend([("/instances/%s" % i.name, i) for i in ilist])
6718 nlist = cfg.GetAllNodesInfo().values()
6719 tgts.extend([("/nodes/%s" % n.name, n) for n in nlist])
6721 for path, target in tgts:
6722 for tag in target.GetTags():
6723 if self.re.search(tag):
6724 results.append((path, tag))
6728 class LUAddTags(TagsLU):
6729 """Sets a tag on a given object.
6732 _OP_REQP = ["kind", "name", "tags"]
6735 def CheckPrereq(self):
6736 """Check prerequisites.
6738 This checks the type and length of the tag name and value.
6741 TagsLU.CheckPrereq(self)
6742 for tag in self.op.tags:
6743 objects.TaggableObject.ValidateTag(tag)
6745 def Exec(self, feedback_fn):
6750 for tag in self.op.tags:
6751 self.target.AddTag(tag)
6752 except errors.TagError, err:
6753 raise errors.OpExecError("Error while setting tag: %s" % str(err))
6755 self.cfg.Update(self.target)
6756 except errors.ConfigurationError:
6757 raise errors.OpRetryError("There has been a modification to the"
6758 " config file and the operation has been"
6759 " aborted. Please retry.")
6762 class LUDelTags(TagsLU):
6763 """Delete a list of tags from a given object.
6766 _OP_REQP = ["kind", "name", "tags"]
6769 def CheckPrereq(self):
6770 """Check prerequisites.
6772 This checks that we have the given tag.
6775 TagsLU.CheckPrereq(self)
6776 for tag in self.op.tags:
6777 objects.TaggableObject.ValidateTag(tag)
6778 del_tags = frozenset(self.op.tags)
6779 cur_tags = self.target.GetTags()
6780 if not del_tags <= cur_tags:
6781 diff_tags = del_tags - cur_tags
6782 diff_names = ["'%s'" % tag for tag in diff_tags]
6784 raise errors.OpPrereqError("Tag(s) %s not found" %
6785 (",".join(diff_names)))
6787 def Exec(self, feedback_fn):
6788 """Remove the tag from the object.
6791 for tag in self.op.tags:
6792 self.target.RemoveTag(tag)
6794 self.cfg.Update(self.target)
6795 except errors.ConfigurationError:
6796 raise errors.OpRetryError("There has been a modification to the"
6797 " config file and the operation has been"
6798 " aborted. Please retry.")
6801 class LUTestDelay(NoHooksLU):
6802 """Sleep for a specified amount of time.
6804 This LU sleeps on the master and/or nodes for a specified amount of
6808 _OP_REQP = ["duration", "on_master", "on_nodes"]
6811 def ExpandNames(self):
6812 """Expand names and set required locks.
6814 This expands the node list, if any.
6817 self.needed_locks = {}
6818 if self.op.on_nodes:
6819 # _GetWantedNodes can be used here, but is not always appropriate to use
6820 # this way in ExpandNames. Check LogicalUnit.ExpandNames docstring for
6822 self.op.on_nodes = _GetWantedNodes(self, self.op.on_nodes)
6823 self.needed_locks[locking.LEVEL_NODE] = self.op.on_nodes
6825 def CheckPrereq(self):
6826 """Check prerequisites.
6830 def Exec(self, feedback_fn):
6831 """Do the actual sleep.
6834 if self.op.on_master:
6835 if not utils.TestDelay(self.op.duration):
6836 raise errors.OpExecError("Error during master delay test")
6837 if self.op.on_nodes:
6838 result = self.rpc.call_test_delay(self.op.on_nodes, self.op.duration)
6839 for node, node_result in result.items():
6840 msg = node_result.RemoteFailMsg()
6842 raise errors.OpExecError("Failure during rpc call to node %s: %s"
6846 class IAllocator(object):
6847 """IAllocator framework.
6849 An IAllocator instance has three sets of attributes:
6850 - cfg that is needed to query the cluster
6851 - input data (all members of the _KEYS class attribute are required)
6852 - four buffer attributes (in|out_data|text), that represent the
6853 input (to the external script) in text and data structure format,
6854 and the output from it, again in two formats
6855 - the result variables from the script (success, info, nodes) for
6860 "mem_size", "disks", "disk_template",
6861 "os", "tags", "nics", "vcpus", "hypervisor",
6867 def __init__(self, lu, mode, name, **kwargs):
6869 # init buffer variables
6870 self.in_text = self.out_text = self.in_data = self.out_data = None
6871 # init all input fields so that pylint is happy
6874 self.mem_size = self.disks = self.disk_template = None
6875 self.os = self.tags = self.nics = self.vcpus = None
6876 self.hypervisor = None
6877 self.relocate_from = None
6879 self.required_nodes = None
6880 # init result fields
6881 self.success = self.info = self.nodes = None
6882 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
6883 keyset = self._ALLO_KEYS
6884 elif self.mode == constants.IALLOCATOR_MODE_RELOC:
6885 keyset = self._RELO_KEYS
6887 raise errors.ProgrammerError("Unknown mode '%s' passed to the"
6888 " IAllocator" % self.mode)
6890 if key not in keyset:
6891 raise errors.ProgrammerError("Invalid input parameter '%s' to"
6892 " IAllocator" % key)
6893 setattr(self, key, kwargs[key])
6895 if key not in kwargs:
6896 raise errors.ProgrammerError("Missing input parameter '%s' to"
6897 " IAllocator" % key)
6898 self._BuildInputData()
6900 def _ComputeClusterData(self):
6901 """Compute the generic allocator input data.
6903 This is the data that is independent of the actual operation.
6907 cluster_info = cfg.GetClusterInfo()
6910 "version": constants.IALLOCATOR_VERSION,
6911 "cluster_name": cfg.GetClusterName(),
6912 "cluster_tags": list(cluster_info.GetTags()),
6913 "enabled_hypervisors": list(cluster_info.enabled_hypervisors),
6914 # we don't have job IDs
6916 iinfo = cfg.GetAllInstancesInfo().values()
6917 i_list = [(inst, cluster_info.FillBE(inst)) for inst in iinfo]
6921 node_list = cfg.GetNodeList()
6923 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
6924 hypervisor_name = self.hypervisor
6925 elif self.mode == constants.IALLOCATOR_MODE_RELOC:
6926 hypervisor_name = cfg.GetInstanceInfo(self.name).hypervisor
6928 node_data = self.lu.rpc.call_node_info(node_list, cfg.GetVGName(),
6930 node_iinfo = self.lu.rpc.call_all_instances_info(node_list,
6931 cluster_info.enabled_hypervisors)
6932 for nname, nresult in node_data.items():
6933 # first fill in static (config-based) values
6934 ninfo = cfg.GetNodeInfo(nname)
6936 "tags": list(ninfo.GetTags()),
6937 "primary_ip": ninfo.primary_ip,
6938 "secondary_ip": ninfo.secondary_ip,
6939 "offline": ninfo.offline,
6940 "drained": ninfo.drained,
6941 "master_candidate": ninfo.master_candidate,
6944 if not ninfo.offline:
6945 msg = nresult.RemoteFailMsg()
6947 raise errors.OpExecError("Can't get data for node %s: %s" %
6949 msg = node_iinfo[nname].RemoteFailMsg()
6951 raise errors.OpExecError("Can't get node instance info"
6952 " from node %s: %s" % (nname, msg))
6953 remote_info = nresult.payload
6954 for attr in ['memory_total', 'memory_free', 'memory_dom0',
6955 'vg_size', 'vg_free', 'cpu_total']:
6956 if attr not in remote_info:
6957 raise errors.OpExecError("Node '%s' didn't return attribute"
6958 " '%s'" % (nname, attr))
6959 if not isinstance(remote_info[attr], int):
6960 raise errors.OpExecError("Node '%s' returned invalid value"
6962 (nname, attr, remote_info[attr]))
6963 # compute memory used by primary instances
6964 i_p_mem = i_p_up_mem = 0
6965 for iinfo, beinfo in i_list:
6966 if iinfo.primary_node == nname:
6967 i_p_mem += beinfo[constants.BE_MEMORY]
6968 if iinfo.name not in node_iinfo[nname].payload:
6971 i_used_mem = int(node_iinfo[nname].payload[iinfo.name]['memory'])
6972 i_mem_diff = beinfo[constants.BE_MEMORY] - i_used_mem
6973 remote_info['memory_free'] -= max(0, i_mem_diff)
6976 i_p_up_mem += beinfo[constants.BE_MEMORY]
6978 # compute memory used by instances
6980 "total_memory": remote_info['memory_total'],
6981 "reserved_memory": remote_info['memory_dom0'],
6982 "free_memory": remote_info['memory_free'],
6983 "total_disk": remote_info['vg_size'],
6984 "free_disk": remote_info['vg_free'],
6985 "total_cpus": remote_info['cpu_total'],
6986 "i_pri_memory": i_p_mem,
6987 "i_pri_up_memory": i_p_up_mem,
6991 node_results[nname] = pnr
6992 data["nodes"] = node_results
6996 for iinfo, beinfo in i_list:
6998 for nic in iinfo.nics:
6999 filled_params = objects.FillDict(
7000 cluster_info.nicparams[constants.PP_DEFAULT],
7002 nic_dict = {"mac": nic.mac,
7004 "mode": filled_params[constants.NIC_MODE],
7005 "link": filled_params[constants.NIC_LINK],
7007 if filled_params[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
7008 nic_dict["bridge"] = filled_params[constants.NIC_LINK]
7009 nic_data.append(nic_dict)
7011 "tags": list(iinfo.GetTags()),
7012 "admin_up": iinfo.admin_up,
7013 "vcpus": beinfo[constants.BE_VCPUS],
7014 "memory": beinfo[constants.BE_MEMORY],
7016 "nodes": [iinfo.primary_node] + list(iinfo.secondary_nodes),
7018 "disks": [{"size": dsk.size, "mode": dsk.mode} for dsk in iinfo.disks],
7019 "disk_template": iinfo.disk_template,
7020 "hypervisor": iinfo.hypervisor,
7022 pir["disk_space_total"] = _ComputeDiskSize(iinfo.disk_template,
7024 instance_data[iinfo.name] = pir
7026 data["instances"] = instance_data
7030 def _AddNewInstance(self):
7031 """Add new instance data to allocator structure.
7033 This in combination with _AllocatorGetClusterData will create the
7034 correct structure needed as input for the allocator.
7036 The checks for the completeness of the opcode must have already been
7042 disk_space = _ComputeDiskSize(self.disk_template, self.disks)
7044 if self.disk_template in constants.DTS_NET_MIRROR:
7045 self.required_nodes = 2
7047 self.required_nodes = 1
7051 "disk_template": self.disk_template,
7054 "vcpus": self.vcpus,
7055 "memory": self.mem_size,
7056 "disks": self.disks,
7057 "disk_space_total": disk_space,
7059 "required_nodes": self.required_nodes,
7061 data["request"] = request
7063 def _AddRelocateInstance(self):
7064 """Add relocate instance data to allocator structure.
7066 This in combination with _IAllocatorGetClusterData will create the
7067 correct structure needed as input for the allocator.
7069 The checks for the completeness of the opcode must have already been
7073 instance = self.lu.cfg.GetInstanceInfo(self.name)
7074 if instance is None:
7075 raise errors.ProgrammerError("Unknown instance '%s' passed to"
7076 " IAllocator" % self.name)
7078 if instance.disk_template not in constants.DTS_NET_MIRROR:
7079 raise errors.OpPrereqError("Can't relocate non-mirrored instances")
7081 if len(instance.secondary_nodes) != 1:
7082 raise errors.OpPrereqError("Instance has not exactly one secondary node")
7084 self.required_nodes = 1
7085 disk_sizes = [{'size': disk.size} for disk in instance.disks]
7086 disk_space = _ComputeDiskSize(instance.disk_template, disk_sizes)
7091 "disk_space_total": disk_space,
7092 "required_nodes": self.required_nodes,
7093 "relocate_from": self.relocate_from,
7095 self.in_data["request"] = request
7097 def _BuildInputData(self):
7098 """Build input data structures.
7101 self._ComputeClusterData()
7103 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
7104 self._AddNewInstance()
7106 self._AddRelocateInstance()
7108 self.in_text = serializer.Dump(self.in_data)
7110 def Run(self, name, validate=True, call_fn=None):
7111 """Run an instance allocator and return the results.
7115 call_fn = self.lu.rpc.call_iallocator_runner
7118 result = call_fn(self.lu.cfg.GetMasterNode(), name, self.in_text)
7119 msg = result.RemoteFailMsg()
7121 raise errors.OpExecError("Failure while running the iallocator"
7122 " script: %s" % msg)
7124 self.out_text = result.payload
7126 self._ValidateResult()
7128 def _ValidateResult(self):
7129 """Process the allocator results.
7131 This will process and if successful save the result in
7132 self.out_data and the other parameters.
7136 rdict = serializer.Load(self.out_text)
7137 except Exception, err:
7138 raise errors.OpExecError("Can't parse iallocator results: %s" % str(err))
7140 if not isinstance(rdict, dict):
7141 raise errors.OpExecError("Can't parse iallocator results: not a dict")
7143 for key in "success", "info", "nodes":
7144 if key not in rdict:
7145 raise errors.OpExecError("Can't parse iallocator results:"
7146 " missing key '%s'" % key)
7147 setattr(self, key, rdict[key])
7149 if not isinstance(rdict["nodes"], list):
7150 raise errors.OpExecError("Can't parse iallocator results: 'nodes' key"
7152 self.out_data = rdict
7155 class LUTestAllocator(NoHooksLU):
7156 """Run allocator tests.
7158 This LU runs the allocator tests
7161 _OP_REQP = ["direction", "mode", "name"]
7163 def CheckPrereq(self):
7164 """Check prerequisites.
7166 This checks the opcode parameters depending on the director and mode test.
7169 if self.op.mode == constants.IALLOCATOR_MODE_ALLOC:
7170 for attr in ["name", "mem_size", "disks", "disk_template",
7171 "os", "tags", "nics", "vcpus"]:
7172 if not hasattr(self.op, attr):
7173 raise errors.OpPrereqError("Missing attribute '%s' on opcode input" %
7175 iname = self.cfg.ExpandInstanceName(self.op.name)
7176 if iname is not None:
7177 raise errors.OpPrereqError("Instance '%s' already in the cluster" %
7179 if not isinstance(self.op.nics, list):
7180 raise errors.OpPrereqError("Invalid parameter 'nics'")
7181 for row in self.op.nics:
7182 if (not isinstance(row, dict) or
7185 "bridge" not in row):
7186 raise errors.OpPrereqError("Invalid contents of the"
7187 " 'nics' parameter")
7188 if not isinstance(self.op.disks, list):
7189 raise errors.OpPrereqError("Invalid parameter 'disks'")
7190 for row in self.op.disks:
7191 if (not isinstance(row, dict) or
7192 "size" not in row or
7193 not isinstance(row["size"], int) or
7194 "mode" not in row or
7195 row["mode"] not in ['r', 'w']):
7196 raise errors.OpPrereqError("Invalid contents of the"
7197 " 'disks' parameter")
7198 if not hasattr(self.op, "hypervisor") or self.op.hypervisor is None:
7199 self.op.hypervisor = self.cfg.GetHypervisorType()
7200 elif self.op.mode == constants.IALLOCATOR_MODE_RELOC:
7201 if not hasattr(self.op, "name"):
7202 raise errors.OpPrereqError("Missing attribute 'name' on opcode input")
7203 fname = self.cfg.ExpandInstanceName(self.op.name)
7205 raise errors.OpPrereqError("Instance '%s' not found for relocation" %
7207 self.op.name = fname
7208 self.relocate_from = self.cfg.GetInstanceInfo(fname).secondary_nodes
7210 raise errors.OpPrereqError("Invalid test allocator mode '%s'" %
7213 if self.op.direction == constants.IALLOCATOR_DIR_OUT:
7214 if not hasattr(self.op, "allocator") or self.op.allocator is None:
7215 raise errors.OpPrereqError("Missing allocator name")
7216 elif self.op.direction != constants.IALLOCATOR_DIR_IN:
7217 raise errors.OpPrereqError("Wrong allocator test '%s'" %
7220 def Exec(self, feedback_fn):
7221 """Run the allocator test.
7224 if self.op.mode == constants.IALLOCATOR_MODE_ALLOC:
7225 ial = IAllocator(self,
7228 mem_size=self.op.mem_size,
7229 disks=self.op.disks,
7230 disk_template=self.op.disk_template,
7234 vcpus=self.op.vcpus,
7235 hypervisor=self.op.hypervisor,
7238 ial = IAllocator(self,
7241 relocate_from=list(self.relocate_from),
7244 if self.op.direction == constants.IALLOCATOR_DIR_IN:
7245 result = ial.in_text
7247 ial.Run(self.op.allocator, validate=False)
7248 result = ial.out_text