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
37 from ganeti import ssh
38 from ganeti import utils
39 from ganeti import errors
40 from ganeti import hypervisor
41 from ganeti import locking
42 from ganeti import constants
43 from ganeti import objects
44 from ganeti import opcodes
45 from ganeti import serializer
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_MASTER: the LU needs to run on the master node
59 REQ_BGL: the LU needs to hold the Big Ganeti Lock exclusively
61 Note that all commands require root permissions.
70 def __init__(self, processor, op, context, rpc):
71 """Constructor for LogicalUnit.
73 This needs to be overriden in derived classes in order to check op
79 self.cfg = context.cfg
80 self.context = context
82 # Dicts used to declare locking needs to mcpu
83 self.needed_locks = None
84 self.acquired_locks = {}
85 self.share_locks = dict(((i, 0) for i in locking.LEVELS))
87 self.remove_locks = {}
88 # Used to force good behavior when calling helper functions
89 self.recalculate_locks = {}
92 self.LogWarning = processor.LogWarning
93 self.LogInfo = processor.LogInfo
95 for attr_name in self._OP_REQP:
96 attr_val = getattr(op, attr_name, None)
98 raise errors.OpPrereqError("Required parameter '%s' missing" %
101 if not self.cfg.IsCluster():
102 raise errors.OpPrereqError("Cluster not initialized yet,"
103 " use 'gnt-cluster init' first.")
105 master = self.cfg.GetMasterNode()
106 if master != utils.HostInfo().name:
107 raise errors.OpPrereqError("Commands must be run on the master"
111 """Returns the SshRunner object
115 self.__ssh = ssh.SshRunner(self.cfg.GetClusterName())
118 ssh = property(fget=__GetSSH)
120 def ExpandNames(self):
121 """Expand names for this LU.
123 This method is called before starting to execute the opcode, and it should
124 update all the parameters of the opcode to their canonical form (e.g. a
125 short node name must be fully expanded after this method has successfully
126 completed). This way locking, hooks, logging, ecc. can work correctly.
128 LUs which implement this method must also populate the self.needed_locks
129 member, as a dict with lock levels as keys, and a list of needed lock names
131 - Use an empty dict if you don't need any lock
132 - If you don't need any lock at a particular level omit that level
133 - Don't put anything for the BGL level
134 - If you want all locks at a level use locking.ALL_SET as a value
136 If you need to share locks (rather than acquire them exclusively) at one
137 level you can modify self.share_locks, setting a true value (usually 1) for
138 that level. By default locks are not shared.
141 # Acquire all nodes and one instance
142 self.needed_locks = {
143 locking.LEVEL_NODE: locking.ALL_SET,
144 locking.LEVEL_INSTANCE: ['instance1.example.tld'],
146 # Acquire just two nodes
147 self.needed_locks = {
148 locking.LEVEL_NODE: ['node1.example.tld', 'node2.example.tld'],
151 self.needed_locks = {} # No, you can't leave it to the default value None
154 # The implementation of this method is mandatory only if the new LU is
155 # concurrent, so that old LUs don't need to be changed all at the same
158 self.needed_locks = {} # Exclusive LUs don't need locks.
160 raise NotImplementedError
162 def DeclareLocks(self, level):
163 """Declare LU locking needs for a level
165 While most LUs can just declare their locking needs at ExpandNames time,
166 sometimes there's the need to calculate some locks after having acquired
167 the ones before. This function is called just before acquiring locks at a
168 particular level, but after acquiring the ones at lower levels, and permits
169 such calculations. It can be used to modify self.needed_locks, and by
170 default it does nothing.
172 This function is only called if you have something already set in
173 self.needed_locks for the level.
175 @param level: Locking level which is going to be locked
176 @type level: member of ganeti.locking.LEVELS
180 def CheckPrereq(self):
181 """Check prerequisites for this LU.
183 This method should check that the prerequisites for the execution
184 of this LU are fulfilled. It can do internode communication, but
185 it should be idempotent - no cluster or system changes are
188 The method should raise errors.OpPrereqError in case something is
189 not fulfilled. Its return value is ignored.
191 This method should also update all the parameters of the opcode to
192 their canonical form if it hasn't been done by ExpandNames before.
195 raise NotImplementedError
197 def Exec(self, feedback_fn):
200 This method should implement the actual work. It should raise
201 errors.OpExecError for failures that are somewhat dealt with in
205 raise NotImplementedError
207 def BuildHooksEnv(self):
208 """Build hooks environment for this LU.
210 This method should return a three-node tuple consisting of: a dict
211 containing the environment that will be used for running the
212 specific hook for this LU, a list of node names on which the hook
213 should run before the execution, and a list of node names on which
214 the hook should run after the execution.
216 The keys of the dict must not have 'GANETI_' prefixed as this will
217 be handled in the hooks runner. Also note additional keys will be
218 added by the hooks runner. If the LU doesn't define any
219 environment, an empty dict (and not None) should be returned.
221 No nodes should be returned as an empty list (and not None).
223 Note that if the HPATH for a LU class is None, this function will
227 raise NotImplementedError
229 def HooksCallBack(self, phase, hook_results, feedback_fn, lu_result):
230 """Notify the LU about the results of its hooks.
232 This method is called every time a hooks phase is executed, and notifies
233 the Logical Unit about the hooks' result. The LU can then use it to alter
234 its result based on the hooks. By default the method does nothing and the
235 previous result is passed back unchanged but any LU can define it if it
236 wants to use the local cluster hook-scripts somehow.
239 phase: the hooks phase that has just been run
240 hooks_results: the results of the multi-node hooks rpc call
241 feedback_fn: function to send feedback back to the caller
242 lu_result: the previous result this LU had, or None in the PRE phase.
247 def _ExpandAndLockInstance(self):
248 """Helper function to expand and lock an instance.
250 Many LUs that work on an instance take its name in self.op.instance_name
251 and need to expand it and then declare the expanded name for locking. This
252 function does it, and then updates self.op.instance_name to the expanded
253 name. It also initializes needed_locks as a dict, if this hasn't been done
257 if self.needed_locks is None:
258 self.needed_locks = {}
260 assert locking.LEVEL_INSTANCE not in self.needed_locks, \
261 "_ExpandAndLockInstance called with instance-level locks set"
262 expanded_name = self.cfg.ExpandInstanceName(self.op.instance_name)
263 if expanded_name is None:
264 raise errors.OpPrereqError("Instance '%s' not known" %
265 self.op.instance_name)
266 self.needed_locks[locking.LEVEL_INSTANCE] = expanded_name
267 self.op.instance_name = expanded_name
269 def _LockInstancesNodes(self, primary_only=False):
270 """Helper function to declare instances' nodes for locking.
272 This function should be called after locking one or more instances to lock
273 their nodes. Its effect is populating self.needed_locks[locking.LEVEL_NODE]
274 with all primary or secondary nodes for instances already locked and
275 present in self.needed_locks[locking.LEVEL_INSTANCE].
277 It should be called from DeclareLocks, and for safety only works if
278 self.recalculate_locks[locking.LEVEL_NODE] is set.
280 In the future it may grow parameters to just lock some instance's nodes, or
281 to just lock primaries or secondary nodes, if needed.
283 If should be called in DeclareLocks in a way similar to:
285 if level == locking.LEVEL_NODE:
286 self._LockInstancesNodes()
288 @type primary_only: boolean
289 @param primary_only: only lock primary nodes of locked instances
292 assert locking.LEVEL_NODE in self.recalculate_locks, \
293 "_LockInstancesNodes helper function called with no nodes to recalculate"
295 # TODO: check if we're really been called with the instance locks held
297 # For now we'll replace self.needed_locks[locking.LEVEL_NODE], but in the
298 # future we might want to have different behaviors depending on the value
299 # of self.recalculate_locks[locking.LEVEL_NODE]
301 for instance_name in self.acquired_locks[locking.LEVEL_INSTANCE]:
302 instance = self.context.cfg.GetInstanceInfo(instance_name)
303 wanted_nodes.append(instance.primary_node)
305 wanted_nodes.extend(instance.secondary_nodes)
307 if self.recalculate_locks[locking.LEVEL_NODE] == constants.LOCKS_REPLACE:
308 self.needed_locks[locking.LEVEL_NODE] = wanted_nodes
309 elif self.recalculate_locks[locking.LEVEL_NODE] == constants.LOCKS_APPEND:
310 self.needed_locks[locking.LEVEL_NODE].extend(wanted_nodes)
312 del self.recalculate_locks[locking.LEVEL_NODE]
315 class NoHooksLU(LogicalUnit):
316 """Simple LU which runs no hooks.
318 This LU is intended as a parent for other LogicalUnits which will
319 run no hooks, in order to reduce duplicate code.
326 class _FieldSet(object):
327 """A simple field set.
329 Among the features are:
330 - checking if a string is among a list of static string or regex objects
331 - checking if a whole list of string matches
332 - returning the matching groups from a regex match
334 Internally, all fields are held as regular expression objects.
337 def __init__(self, *items):
338 self.items = [re.compile("^%s$" % value) for value in items]
340 def Extend(self, other_set):
341 """Extend the field set with the items from another one"""
342 self.items.extend(other_set.items)
344 def Matches(self, field):
345 """Checks if a field matches the current set
348 @param field: the string to match
349 @return: either False or a regular expression match object
352 for m in itertools.ifilter(None, (val.match(field) for val in self.items)):
356 def NonMatching(self, items):
357 """Returns the list of fields not matching the current set
360 @param items: the list of fields to check
362 @return: list of non-matching fields
365 return [val for val in items if not self.Matches(val)]
368 def _GetWantedNodes(lu, nodes):
369 """Returns list of checked and expanded node names.
372 nodes: List of nodes (strings) or None for all
375 if not isinstance(nodes, list):
376 raise errors.OpPrereqError("Invalid argument type 'nodes'")
379 raise errors.ProgrammerError("_GetWantedNodes should only be called with a"
380 " non-empty list of nodes whose name is to be expanded.")
384 node = lu.cfg.ExpandNodeName(name)
386 raise errors.OpPrereqError("No such node name '%s'" % name)
389 return utils.NiceSort(wanted)
392 def _GetWantedInstances(lu, instances):
393 """Returns list of checked and expanded instance names.
396 instances: List of instances (strings) or None for all
399 if not isinstance(instances, list):
400 raise errors.OpPrereqError("Invalid argument type 'instances'")
405 for name in instances:
406 instance = lu.cfg.ExpandInstanceName(name)
408 raise errors.OpPrereqError("No such instance name '%s'" % name)
409 wanted.append(instance)
412 wanted = lu.cfg.GetInstanceList()
413 return utils.NiceSort(wanted)
416 def _CheckOutputFields(static, dynamic, selected):
417 """Checks whether all selected fields are valid.
419 @type static: L{_FieldSet}
420 @param static: static fields set
421 @type dynamic: L{_FieldSet}
422 @param dynamic: dynamic fields set
429 delta = f.NonMatching(selected)
431 raise errors.OpPrereqError("Unknown output fields selected: %s"
435 def _BuildInstanceHookEnv(name, primary_node, secondary_nodes, os_type, status,
436 memory, vcpus, nics):
437 """Builds instance related env variables for hooks from single variables.
440 secondary_nodes: List of secondary nodes as strings
444 "INSTANCE_NAME": name,
445 "INSTANCE_PRIMARY": primary_node,
446 "INSTANCE_SECONDARIES": " ".join(secondary_nodes),
447 "INSTANCE_OS_TYPE": os_type,
448 "INSTANCE_STATUS": status,
449 "INSTANCE_MEMORY": memory,
450 "INSTANCE_VCPUS": vcpus,
454 nic_count = len(nics)
455 for idx, (ip, bridge, mac) in enumerate(nics):
458 env["INSTANCE_NIC%d_IP" % idx] = ip
459 env["INSTANCE_NIC%d_BRIDGE" % idx] = bridge
460 env["INSTANCE_NIC%d_HWADDR" % idx] = mac
464 env["INSTANCE_NIC_COUNT"] = nic_count
469 def _BuildInstanceHookEnvByObject(lu, instance, override=None):
470 """Builds instance related env variables for hooks from an object.
473 instance: objects.Instance object of instance
474 override: dict of values to override
476 bep = lu.cfg.GetClusterInfo().FillBE(instance)
478 'name': instance.name,
479 'primary_node': instance.primary_node,
480 'secondary_nodes': instance.secondary_nodes,
481 'os_type': instance.os,
482 'status': instance.os,
483 'memory': bep[constants.BE_MEMORY],
484 'vcpus': bep[constants.BE_VCPUS],
485 'nics': [(nic.ip, nic.bridge, nic.mac) for nic in instance.nics],
488 args.update(override)
489 return _BuildInstanceHookEnv(**args)
492 def _CheckInstanceBridgesExist(lu, instance):
493 """Check that the brigdes needed by an instance exist.
496 # check bridges existance
497 brlist = [nic.bridge for nic in instance.nics]
498 if not lu.rpc.call_bridges_exist(instance.primary_node, brlist):
499 raise errors.OpPrereqError("one or more target bridges %s does not"
500 " exist on destination node '%s'" %
501 (brlist, instance.primary_node))
504 class LUDestroyCluster(NoHooksLU):
505 """Logical unit for destroying the cluster.
510 def CheckPrereq(self):
511 """Check prerequisites.
513 This checks whether the cluster is empty.
515 Any errors are signalled by raising errors.OpPrereqError.
518 master = self.cfg.GetMasterNode()
520 nodelist = self.cfg.GetNodeList()
521 if len(nodelist) != 1 or nodelist[0] != master:
522 raise errors.OpPrereqError("There are still %d node(s) in"
523 " this cluster." % (len(nodelist) - 1))
524 instancelist = self.cfg.GetInstanceList()
526 raise errors.OpPrereqError("There are still %d instance(s) in"
527 " this cluster." % len(instancelist))
529 def Exec(self, feedback_fn):
530 """Destroys the cluster.
533 master = self.cfg.GetMasterNode()
534 if not self.rpc.call_node_stop_master(master, False):
535 raise errors.OpExecError("Could not disable the master role")
536 priv_key, pub_key, _ = ssh.GetUserFiles(constants.GANETI_RUNAS)
537 utils.CreateBackup(priv_key)
538 utils.CreateBackup(pub_key)
542 class LUVerifyCluster(LogicalUnit):
543 """Verifies the cluster status.
546 HPATH = "cluster-verify"
547 HTYPE = constants.HTYPE_CLUSTER
548 _OP_REQP = ["skip_checks"]
551 def ExpandNames(self):
552 self.needed_locks = {
553 locking.LEVEL_NODE: locking.ALL_SET,
554 locking.LEVEL_INSTANCE: locking.ALL_SET,
556 self.share_locks = dict(((i, 1) for i in locking.LEVELS))
558 def _VerifyNode(self, node, file_list, local_cksum, vglist, node_result,
559 remote_version, feedback_fn):
560 """Run multiple tests against a node.
563 - compares ganeti version
564 - checks vg existance and size > 20G
565 - checks config file checksum
566 - checks ssh to other nodes
569 node: name of the node to check
570 file_list: required list of files
571 local_cksum: dictionary of local files and their checksums
574 # compares ganeti version
575 local_version = constants.PROTOCOL_VERSION
576 if not remote_version:
577 feedback_fn(" - ERROR: connection to %s failed" % (node))
580 if local_version != remote_version:
581 feedback_fn(" - ERROR: sw version mismatch: master %s, node(%s) %s" %
582 (local_version, node, remote_version))
585 # checks vg existance and size > 20G
589 feedback_fn(" - ERROR: unable to check volume groups on node %s." %
593 vgstatus = utils.CheckVolumeGroupSize(vglist, self.cfg.GetVGName(),
594 constants.MIN_VG_SIZE)
596 feedback_fn(" - ERROR: %s on node %s" % (vgstatus, node))
600 feedback_fn(" - ERROR: unable to verify node %s." % (node,))
603 # checks config file checksum
606 if 'filelist' not in node_result:
608 feedback_fn(" - ERROR: node hasn't returned file checksum data")
610 remote_cksum = node_result['filelist']
611 for file_name in file_list:
612 if file_name not in remote_cksum:
614 feedback_fn(" - ERROR: file '%s' missing" % file_name)
615 elif remote_cksum[file_name] != local_cksum[file_name]:
617 feedback_fn(" - ERROR: file '%s' has wrong checksum" % file_name)
619 if 'nodelist' not in node_result:
621 feedback_fn(" - ERROR: node hasn't returned node ssh connectivity data")
623 if node_result['nodelist']:
625 for node in node_result['nodelist']:
626 feedback_fn(" - ERROR: ssh communication with node '%s': %s" %
627 (node, node_result['nodelist'][node]))
628 if 'node-net-test' not in node_result:
630 feedback_fn(" - ERROR: node hasn't returned node tcp connectivity data")
632 if node_result['node-net-test']:
634 nlist = utils.NiceSort(node_result['node-net-test'].keys())
636 feedback_fn(" - ERROR: tcp communication with node '%s': %s" %
637 (node, node_result['node-net-test'][node]))
639 hyp_result = node_result.get('hypervisor', None)
640 if isinstance(hyp_result, dict):
641 for hv_name, hv_result in hyp_result.iteritems():
642 if hv_result is not None:
643 feedback_fn(" - ERROR: hypervisor %s verify failure: '%s'" %
644 (hv_name, hv_result))
647 def _VerifyInstance(self, instance, instanceconfig, node_vol_is,
648 node_instance, feedback_fn):
649 """Verify an instance.
651 This function checks to see if the required block devices are
652 available on the instance's node.
657 node_current = instanceconfig.primary_node
660 instanceconfig.MapLVsByNode(node_vol_should)
662 for node in node_vol_should:
663 for volume in node_vol_should[node]:
664 if node not in node_vol_is or volume not in node_vol_is[node]:
665 feedback_fn(" - ERROR: volume %s missing on node %s" %
669 if not instanceconfig.status == 'down':
670 if (node_current not in node_instance or
671 not instance in node_instance[node_current]):
672 feedback_fn(" - ERROR: instance %s not running on node %s" %
673 (instance, node_current))
676 for node in node_instance:
677 if (not node == node_current):
678 if instance in node_instance[node]:
679 feedback_fn(" - ERROR: instance %s should not run on node %s" %
685 def _VerifyOrphanVolumes(self, node_vol_should, node_vol_is, feedback_fn):
686 """Verify if there are any unknown volumes in the cluster.
688 The .os, .swap and backup volumes are ignored. All other volumes are
694 for node in node_vol_is:
695 for volume in node_vol_is[node]:
696 if node not in node_vol_should or volume not in node_vol_should[node]:
697 feedback_fn(" - ERROR: volume %s on node %s should not exist" %
702 def _VerifyOrphanInstances(self, instancelist, node_instance, feedback_fn):
703 """Verify the list of running instances.
705 This checks what instances are running but unknown to the cluster.
709 for node in node_instance:
710 for runninginstance in node_instance[node]:
711 if runninginstance not in instancelist:
712 feedback_fn(" - ERROR: instance %s on node %s should not exist" %
713 (runninginstance, node))
717 def _VerifyNPlusOneMemory(self, node_info, instance_cfg, feedback_fn):
718 """Verify N+1 Memory Resilience.
720 Check that if one single node dies we can still start all the instances it
726 for node, nodeinfo in node_info.iteritems():
727 # This code checks that every node which is now listed as secondary has
728 # enough memory to host all instances it is supposed to should a single
729 # other node in the cluster fail.
730 # FIXME: not ready for failover to an arbitrary node
731 # FIXME: does not support file-backed instances
732 # WARNING: we currently take into account down instances as well as up
733 # ones, considering that even if they're down someone might want to start
734 # them even in the event of a node failure.
735 for prinode, instances in nodeinfo['sinst-by-pnode'].iteritems():
737 for instance in instances:
738 bep = self.cfg.GetClusterInfo().FillBE(instance_cfg[instance])
739 if bep[constants.BE_AUTO_BALANCE]:
740 needed_mem += bep[constants.BE_MEMORY]
741 if nodeinfo['mfree'] < needed_mem:
742 feedback_fn(" - ERROR: not enough memory on node %s to accomodate"
743 " failovers should node %s fail" % (node, prinode))
747 def CheckPrereq(self):
748 """Check prerequisites.
750 Transform the list of checks we're going to skip into a set and check that
751 all its members are valid.
754 self.skip_set = frozenset(self.op.skip_checks)
755 if not constants.VERIFY_OPTIONAL_CHECKS.issuperset(self.skip_set):
756 raise errors.OpPrereqError("Invalid checks to be skipped specified")
758 def BuildHooksEnv(self):
761 Cluster-Verify hooks just rone in the post phase and their failure makes
762 the output be logged in the verify output and the verification to fail.
765 all_nodes = self.cfg.GetNodeList()
766 # TODO: populate the environment with useful information for verify hooks
768 return env, [], all_nodes
770 def Exec(self, feedback_fn):
771 """Verify integrity of cluster, performing various test on nodes.
775 feedback_fn("* Verifying global settings")
776 for msg in self.cfg.VerifyConfig():
777 feedback_fn(" - ERROR: %s" % msg)
779 vg_name = self.cfg.GetVGName()
780 hypervisors = self.cfg.GetClusterInfo().enabled_hypervisors
781 nodelist = utils.NiceSort(self.cfg.GetNodeList())
782 nodeinfo = [self.cfg.GetNodeInfo(nname) for nname in nodelist]
783 instancelist = utils.NiceSort(self.cfg.GetInstanceList())
784 i_non_redundant = [] # Non redundant instances
785 i_non_a_balanced = [] # Non auto-balanced instances
791 # FIXME: verify OS list
794 file_names.append(constants.SSL_CERT_FILE)
795 file_names.append(constants.CLUSTER_CONF_FILE)
796 local_checksums = utils.FingerprintFiles(file_names)
798 feedback_fn("* Gathering data (%d nodes)" % len(nodelist))
799 all_volumeinfo = self.rpc.call_volume_list(nodelist, vg_name)
800 all_instanceinfo = self.rpc.call_instance_list(nodelist, hypervisors)
801 all_vglist = self.rpc.call_vg_list(nodelist)
802 node_verify_param = {
803 'filelist': file_names,
804 'nodelist': nodelist,
805 'hypervisor': hypervisors,
806 'node-net-test': [(node.name, node.primary_ip, node.secondary_ip)
807 for node in nodeinfo]
809 all_nvinfo = self.rpc.call_node_verify(nodelist, node_verify_param,
810 self.cfg.GetClusterName())
811 all_rversion = self.rpc.call_version(nodelist)
812 all_ninfo = self.rpc.call_node_info(nodelist, self.cfg.GetVGName(),
813 self.cfg.GetHypervisorType())
815 cluster = self.cfg.GetClusterInfo()
816 for node in nodelist:
817 feedback_fn("* Verifying node %s" % node)
818 result = self._VerifyNode(node, file_names, local_checksums,
819 all_vglist[node], all_nvinfo[node],
820 all_rversion[node], feedback_fn)
824 volumeinfo = all_volumeinfo[node]
826 if isinstance(volumeinfo, basestring):
827 feedback_fn(" - ERROR: LVM problem on node %s: %s" %
828 (node, volumeinfo[-400:].encode('string_escape')))
830 node_volume[node] = {}
831 elif not isinstance(volumeinfo, dict):
832 feedback_fn(" - ERROR: connection to %s failed" % (node,))
836 node_volume[node] = volumeinfo
839 nodeinstance = all_instanceinfo[node]
840 if type(nodeinstance) != list:
841 feedback_fn(" - ERROR: connection to %s failed" % (node,))
845 node_instance[node] = nodeinstance
848 nodeinfo = all_ninfo[node]
849 if not isinstance(nodeinfo, dict):
850 feedback_fn(" - ERROR: connection to %s failed" % (node,))
856 "mfree": int(nodeinfo['memory_free']),
857 "dfree": int(nodeinfo['vg_free']),
860 # dictionary holding all instances this node is secondary for,
861 # grouped by their primary node. Each key is a cluster node, and each
862 # value is a list of instances which have the key as primary and the
863 # current node as secondary. this is handy to calculate N+1 memory
864 # availability if you can only failover from a primary to its
866 "sinst-by-pnode": {},
869 feedback_fn(" - ERROR: invalid value returned from node %s" % (node,))
875 for instance in instancelist:
876 feedback_fn("* Verifying instance %s" % instance)
877 inst_config = self.cfg.GetInstanceInfo(instance)
878 result = self._VerifyInstance(instance, inst_config, node_volume,
879 node_instance, feedback_fn)
882 inst_config.MapLVsByNode(node_vol_should)
884 instance_cfg[instance] = inst_config
886 pnode = inst_config.primary_node
887 if pnode in node_info:
888 node_info[pnode]['pinst'].append(instance)
890 feedback_fn(" - ERROR: instance %s, connection to primary node"
891 " %s failed" % (instance, pnode))
894 # If the instance is non-redundant we cannot survive losing its primary
895 # node, so we are not N+1 compliant. On the other hand we have no disk
896 # templates with more than one secondary so that situation is not well
898 # FIXME: does not support file-backed instances
899 if len(inst_config.secondary_nodes) == 0:
900 i_non_redundant.append(instance)
901 elif len(inst_config.secondary_nodes) > 1:
902 feedback_fn(" - WARNING: multiple secondaries for instance %s"
905 if not cluster.FillBE(inst_config)[constants.BE_AUTO_BALANCE]:
906 i_non_a_balanced.append(instance)
908 for snode in inst_config.secondary_nodes:
909 if snode in node_info:
910 node_info[snode]['sinst'].append(instance)
911 if pnode not in node_info[snode]['sinst-by-pnode']:
912 node_info[snode]['sinst-by-pnode'][pnode] = []
913 node_info[snode]['sinst-by-pnode'][pnode].append(instance)
915 feedback_fn(" - ERROR: instance %s, connection to secondary node"
916 " %s failed" % (instance, snode))
918 feedback_fn("* Verifying orphan volumes")
919 result = self._VerifyOrphanVolumes(node_vol_should, node_volume,
923 feedback_fn("* Verifying remaining instances")
924 result = self._VerifyOrphanInstances(instancelist, node_instance,
928 if constants.VERIFY_NPLUSONE_MEM not in self.skip_set:
929 feedback_fn("* Verifying N+1 Memory redundancy")
930 result = self._VerifyNPlusOneMemory(node_info, instance_cfg, feedback_fn)
933 feedback_fn("* Other Notes")
935 feedback_fn(" - NOTICE: %d non-redundant instance(s) found."
936 % len(i_non_redundant))
939 feedback_fn(" - NOTICE: %d non-auto-balanced instance(s) found."
940 % len(i_non_a_balanced))
944 def HooksCallBack(self, phase, hooks_results, feedback_fn, lu_result):
945 """Analize the post-hooks' result, handle it, and send some
946 nicely-formatted feedback back to the user.
949 phase: the hooks phase that has just been run
950 hooks_results: the results of the multi-node hooks rpc call
951 feedback_fn: function to send feedback back to the caller
952 lu_result: previous Exec result
955 # We only really run POST phase hooks, and are only interested in
957 if phase == constants.HOOKS_PHASE_POST:
958 # Used to change hooks' output to proper indentation
959 indent_re = re.compile('^', re.M)
960 feedback_fn("* Hooks Results")
961 if not hooks_results:
962 feedback_fn(" - ERROR: general communication failure")
965 for node_name in hooks_results:
966 show_node_header = True
967 res = hooks_results[node_name]
968 if res is False or not isinstance(res, list):
969 feedback_fn(" Communication failure")
972 for script, hkr, output in res:
973 if hkr == constants.HKR_FAIL:
974 # The node header is only shown once, if there are
975 # failing hooks on that node
977 feedback_fn(" Node %s:" % node_name)
978 show_node_header = False
979 feedback_fn(" ERROR: Script %s failed, output:" % script)
980 output = indent_re.sub(' ', output)
981 feedback_fn("%s" % output)
987 class LUVerifyDisks(NoHooksLU):
988 """Verifies the cluster disks status.
994 def ExpandNames(self):
995 self.needed_locks = {
996 locking.LEVEL_NODE: locking.ALL_SET,
997 locking.LEVEL_INSTANCE: locking.ALL_SET,
999 self.share_locks = dict(((i, 1) for i in locking.LEVELS))
1001 def CheckPrereq(self):
1002 """Check prerequisites.
1004 This has no prerequisites.
1009 def Exec(self, feedback_fn):
1010 """Verify integrity of cluster disks.
1013 result = res_nodes, res_nlvm, res_instances, res_missing = [], {}, [], {}
1015 vg_name = self.cfg.GetVGName()
1016 nodes = utils.NiceSort(self.cfg.GetNodeList())
1017 instances = [self.cfg.GetInstanceInfo(name)
1018 for name in self.cfg.GetInstanceList()]
1021 for inst in instances:
1023 if (inst.status != "up" or
1024 inst.disk_template not in constants.DTS_NET_MIRROR):
1026 inst.MapLVsByNode(inst_lvs)
1027 # transform { iname: {node: [vol,],},} to {(node, vol): iname}
1028 for node, vol_list in inst_lvs.iteritems():
1029 for vol in vol_list:
1030 nv_dict[(node, vol)] = inst
1035 node_lvs = self.rpc.call_volume_list(nodes, vg_name)
1040 lvs = node_lvs[node]
1042 if isinstance(lvs, basestring):
1043 logging.warning("Error enumerating LVs on node %s: %s", node, lvs)
1044 res_nlvm[node] = lvs
1045 elif not isinstance(lvs, dict):
1046 logging.warning("Connection to node %s failed or invalid data"
1048 res_nodes.append(node)
1051 for lv_name, (_, lv_inactive, lv_online) in lvs.iteritems():
1052 inst = nv_dict.pop((node, lv_name), None)
1053 if (not lv_online and inst is not None
1054 and inst.name not in res_instances):
1055 res_instances.append(inst.name)
1057 # any leftover items in nv_dict are missing LVs, let's arrange the
1059 for key, inst in nv_dict.iteritems():
1060 if inst.name not in res_missing:
1061 res_missing[inst.name] = []
1062 res_missing[inst.name].append(key)
1067 class LURenameCluster(LogicalUnit):
1068 """Rename the cluster.
1071 HPATH = "cluster-rename"
1072 HTYPE = constants.HTYPE_CLUSTER
1075 def BuildHooksEnv(self):
1080 "OP_TARGET": self.cfg.GetClusterName(),
1081 "NEW_NAME": self.op.name,
1083 mn = self.cfg.GetMasterNode()
1084 return env, [mn], [mn]
1086 def CheckPrereq(self):
1087 """Verify that the passed name is a valid one.
1090 hostname = utils.HostInfo(self.op.name)
1092 new_name = hostname.name
1093 self.ip = new_ip = hostname.ip
1094 old_name = self.cfg.GetClusterName()
1095 old_ip = self.cfg.GetMasterIP()
1096 if new_name == old_name and new_ip == old_ip:
1097 raise errors.OpPrereqError("Neither the name nor the IP address of the"
1098 " cluster has changed")
1099 if new_ip != old_ip:
1100 if utils.TcpPing(new_ip, constants.DEFAULT_NODED_PORT):
1101 raise errors.OpPrereqError("The given cluster IP address (%s) is"
1102 " reachable on the network. Aborting." %
1105 self.op.name = new_name
1107 def Exec(self, feedback_fn):
1108 """Rename the cluster.
1111 clustername = self.op.name
1114 # shutdown the master IP
1115 master = self.cfg.GetMasterNode()
1116 if not self.rpc.call_node_stop_master(master, False):
1117 raise errors.OpExecError("Could not disable the master role")
1122 ss.SetKey(ss.SS_MASTER_IP, ip)
1123 ss.SetKey(ss.SS_CLUSTER_NAME, clustername)
1125 # Distribute updated ss config to all nodes
1126 myself = self.cfg.GetNodeInfo(master)
1127 dist_nodes = self.cfg.GetNodeList()
1128 if myself.name in dist_nodes:
1129 dist_nodes.remove(myself.name)
1131 logging.debug("Copying updated ssconf data to all nodes")
1132 for keyname in [ss.SS_CLUSTER_NAME, ss.SS_MASTER_IP]:
1133 fname = ss.KeyToFilename(keyname)
1134 result = self.rpc.call_upload_file(dist_nodes, fname)
1135 for to_node in dist_nodes:
1136 if not result[to_node]:
1137 self.LogWarning("Copy of file %s to node %s failed",
1140 if not self.rpc.call_node_start_master(master, False):
1141 self.LogWarning("Could not re-enable the master role on"
1142 " the master, please restart manually.")
1145 def _RecursiveCheckIfLVMBased(disk):
1146 """Check if the given disk or its children are lvm-based.
1149 disk: ganeti.objects.Disk object
1152 boolean indicating whether a LD_LV dev_type was found or not
1156 for chdisk in disk.children:
1157 if _RecursiveCheckIfLVMBased(chdisk):
1159 return disk.dev_type == constants.LD_LV
1162 class LUSetClusterParams(LogicalUnit):
1163 """Change the parameters of the cluster.
1166 HPATH = "cluster-modify"
1167 HTYPE = constants.HTYPE_CLUSTER
1171 def ExpandNames(self):
1172 # FIXME: in the future maybe other cluster params won't require checking on
1173 # all nodes to be modified.
1174 self.needed_locks = {
1175 locking.LEVEL_NODE: locking.ALL_SET,
1177 self.share_locks[locking.LEVEL_NODE] = 1
1179 def BuildHooksEnv(self):
1184 "OP_TARGET": self.cfg.GetClusterName(),
1185 "NEW_VG_NAME": self.op.vg_name,
1187 mn = self.cfg.GetMasterNode()
1188 return env, [mn], [mn]
1190 def CheckPrereq(self):
1191 """Check prerequisites.
1193 This checks whether the given params don't conflict and
1194 if the given volume group is valid.
1197 # FIXME: This only works because there is only one parameter that can be
1198 # changed or removed.
1199 if self.op.vg_name is not None and not self.op.vg_name:
1200 instances = self.cfg.GetAllInstancesInfo().values()
1201 for inst in instances:
1202 for disk in inst.disks:
1203 if _RecursiveCheckIfLVMBased(disk):
1204 raise errors.OpPrereqError("Cannot disable lvm storage while"
1205 " lvm-based instances exist")
1207 node_list = self.acquired_locks[locking.LEVEL_NODE]
1209 # if vg_name not None, checks given volume group on all nodes
1211 vglist = self.rpc.call_vg_list(node_list)
1212 for node in node_list:
1213 vgstatus = utils.CheckVolumeGroupSize(vglist[node], self.op.vg_name,
1214 constants.MIN_VG_SIZE)
1216 raise errors.OpPrereqError("Error on node '%s': %s" %
1219 self.cluster = cluster = self.cfg.GetClusterInfo()
1220 # beparams changes do not need validation (we can't validate?),
1221 # but we still process here
1222 if self.op.beparams:
1223 self.new_beparams = cluster.FillDict(
1224 cluster.beparams[constants.BEGR_DEFAULT], self.op.beparams)
1226 # hypervisor list/parameters
1227 self.new_hvparams = cluster.FillDict(cluster.hvparams, {})
1228 if self.op.hvparams:
1229 if not isinstance(self.op.hvparams, dict):
1230 raise errors.OpPrereqError("Invalid 'hvparams' parameter on input")
1231 for hv_name, hv_dict in self.op.hvparams.items():
1232 if hv_name not in self.new_hvparams:
1233 self.new_hvparams[hv_name] = hv_dict
1235 self.new_hvparams[hv_name].update(hv_dict)
1237 if self.op.enabled_hypervisors is not None:
1238 self.hv_list = self.op.enabled_hypervisors
1240 self.hv_list = cluster.enabled_hypervisors
1242 if self.op.hvparams or self.op.enabled_hypervisors is not None:
1243 # either the enabled list has changed, or the parameters have, validate
1244 for hv_name, hv_params in self.new_hvparams.items():
1245 if ((self.op.hvparams and hv_name in self.op.hvparams) or
1246 (self.op.enabled_hypervisors and
1247 hv_name in self.op.enabled_hypervisors)):
1248 # either this is a new hypervisor, or its parameters have changed
1249 hv_class = hypervisor.GetHypervisor(hv_name)
1250 hv_class.CheckParameterSyntax(hv_params)
1251 _CheckHVParams(self, node_list, hv_name, hv_params)
1253 def Exec(self, feedback_fn):
1254 """Change the parameters of the cluster.
1257 if self.op.vg_name is not None:
1258 if self.op.vg_name != self.cfg.GetVGName():
1259 self.cfg.SetVGName(self.op.vg_name)
1261 feedback_fn("Cluster LVM configuration already in desired"
1262 " state, not changing")
1263 if self.op.hvparams:
1264 self.cluster.hvparams = self.new_hvparams
1265 if self.op.enabled_hypervisors is not None:
1266 self.cluster.enabled_hypervisors = self.op.enabled_hypervisors
1267 if self.op.beparams:
1268 self.cluster.beparams[constants.BEGR_DEFAULT] = self.new_beparams
1269 self.cfg.Update(self.cluster)
1272 def _WaitForSync(lu, instance, oneshot=False, unlock=False):
1273 """Sleep and poll for an instance's disk to sync.
1276 if not instance.disks:
1280 lu.proc.LogInfo("Waiting for instance %s to sync disks." % instance.name)
1282 node = instance.primary_node
1284 for dev in instance.disks:
1285 lu.cfg.SetDiskID(dev, node)
1291 cumul_degraded = False
1292 rstats = lu.rpc.call_blockdev_getmirrorstatus(node, instance.disks)
1294 lu.LogWarning("Can't get any data from node %s", node)
1297 raise errors.RemoteError("Can't contact node %s for mirror data,"
1298 " aborting." % node)
1302 for i in range(len(rstats)):
1305 lu.LogWarning("Can't compute data for node %s/%s",
1306 node, instance.disks[i].iv_name)
1308 # we ignore the ldisk parameter
1309 perc_done, est_time, is_degraded, _ = mstat
1310 cumul_degraded = cumul_degraded or (is_degraded and perc_done is None)
1311 if perc_done is not None:
1313 if est_time is not None:
1314 rem_time = "%d estimated seconds remaining" % est_time
1317 rem_time = "no time estimate"
1318 lu.proc.LogInfo("- device %s: %5.2f%% done, %s" %
1319 (instance.disks[i].iv_name, perc_done, rem_time))
1323 time.sleep(min(60, max_time))
1326 lu.proc.LogInfo("Instance %s's disks are in sync." % instance.name)
1327 return not cumul_degraded
1330 def _CheckDiskConsistency(lu, dev, node, on_primary, ldisk=False):
1331 """Check that mirrors are not degraded.
1333 The ldisk parameter, if True, will change the test from the
1334 is_degraded attribute (which represents overall non-ok status for
1335 the device(s)) to the ldisk (representing the local storage status).
1338 lu.cfg.SetDiskID(dev, node)
1345 if on_primary or dev.AssembleOnSecondary():
1346 rstats = lu.rpc.call_blockdev_find(node, dev)
1348 logging.warning("Node %s: disk degraded, not found or node down", node)
1351 result = result and (not rstats[idx])
1353 for child in dev.children:
1354 result = result and _CheckDiskConsistency(lu, child, node, on_primary)
1359 class LUDiagnoseOS(NoHooksLU):
1360 """Logical unit for OS diagnose/query.
1363 _OP_REQP = ["output_fields", "names"]
1365 _FIELDS_STATIC = _FieldSet()
1366 _FIELDS_DYNAMIC = _FieldSet("name", "valid", "node_status")
1368 def ExpandNames(self):
1370 raise errors.OpPrereqError("Selective OS query not supported")
1372 _CheckOutputFields(static=self._FIELDS_STATIC,
1373 dynamic=self._FIELDS_DYNAMIC,
1374 selected=self.op.output_fields)
1376 # Lock all nodes, in shared mode
1377 self.needed_locks = {}
1378 self.share_locks[locking.LEVEL_NODE] = 1
1379 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
1381 def CheckPrereq(self):
1382 """Check prerequisites.
1387 def _DiagnoseByOS(node_list, rlist):
1388 """Remaps a per-node return list into an a per-os per-node dictionary
1391 node_list: a list with the names of all nodes
1392 rlist: a map with node names as keys and OS objects as values
1395 map: a map with osnames as keys and as value another map, with
1397 keys and list of OS objects as values
1398 e.g. {"debian-etch": {"node1": [<object>,...],
1399 "node2": [<object>,]}
1404 for node_name, nr in rlist.iteritems():
1408 if os_obj.name not in all_os:
1409 # build a list of nodes for this os containing empty lists
1410 # for each node in node_list
1411 all_os[os_obj.name] = {}
1412 for nname in node_list:
1413 all_os[os_obj.name][nname] = []
1414 all_os[os_obj.name][node_name].append(os_obj)
1417 def Exec(self, feedback_fn):
1418 """Compute the list of OSes.
1421 node_list = self.acquired_locks[locking.LEVEL_NODE]
1422 node_data = self.rpc.call_os_diagnose(node_list)
1423 if node_data == False:
1424 raise errors.OpExecError("Can't gather the list of OSes")
1425 pol = self._DiagnoseByOS(node_list, node_data)
1427 for os_name, os_data in pol.iteritems():
1429 for field in self.op.output_fields:
1432 elif field == "valid":
1433 val = utils.all([osl and osl[0] for osl in os_data.values()])
1434 elif field == "node_status":
1436 for node_name, nos_list in os_data.iteritems():
1437 val[node_name] = [(v.status, v.path) for v in nos_list]
1439 raise errors.ParameterError(field)
1446 class LURemoveNode(LogicalUnit):
1447 """Logical unit for removing a node.
1450 HPATH = "node-remove"
1451 HTYPE = constants.HTYPE_NODE
1452 _OP_REQP = ["node_name"]
1454 def BuildHooksEnv(self):
1457 This doesn't run on the target node in the pre phase as a failed
1458 node would then be impossible to remove.
1462 "OP_TARGET": self.op.node_name,
1463 "NODE_NAME": self.op.node_name,
1465 all_nodes = self.cfg.GetNodeList()
1466 all_nodes.remove(self.op.node_name)
1467 return env, all_nodes, all_nodes
1469 def CheckPrereq(self):
1470 """Check prerequisites.
1473 - the node exists in the configuration
1474 - it does not have primary or secondary instances
1475 - it's not the master
1477 Any errors are signalled by raising errors.OpPrereqError.
1480 node = self.cfg.GetNodeInfo(self.cfg.ExpandNodeName(self.op.node_name))
1482 raise errors.OpPrereqError, ("Node '%s' is unknown." % self.op.node_name)
1484 instance_list = self.cfg.GetInstanceList()
1486 masternode = self.cfg.GetMasterNode()
1487 if node.name == masternode:
1488 raise errors.OpPrereqError("Node is the master node,"
1489 " you need to failover first.")
1491 for instance_name in instance_list:
1492 instance = self.cfg.GetInstanceInfo(instance_name)
1493 if node.name == instance.primary_node:
1494 raise errors.OpPrereqError("Instance %s still running on the node,"
1495 " please remove first." % instance_name)
1496 if node.name in instance.secondary_nodes:
1497 raise errors.OpPrereqError("Instance %s has node as a secondary,"
1498 " please remove first." % instance_name)
1499 self.op.node_name = node.name
1502 def Exec(self, feedback_fn):
1503 """Removes the node from the cluster.
1507 logging.info("Stopping the node daemon and removing configs from node %s",
1510 self.context.RemoveNode(node.name)
1512 self.rpc.call_node_leave_cluster(node.name)
1515 class LUQueryNodes(NoHooksLU):
1516 """Logical unit for querying nodes.
1519 _OP_REQP = ["output_fields", "names"]
1521 _FIELDS_DYNAMIC = _FieldSet(
1523 "mtotal", "mnode", "mfree",
1528 _FIELDS_STATIC = _FieldSet(
1529 "name", "pinst_cnt", "sinst_cnt",
1530 "pinst_list", "sinst_list",
1531 "pip", "sip", "tags",
1535 def ExpandNames(self):
1536 _CheckOutputFields(static=self._FIELDS_STATIC,
1537 dynamic=self._FIELDS_DYNAMIC,
1538 selected=self.op.output_fields)
1540 self.needed_locks = {}
1541 self.share_locks[locking.LEVEL_NODE] = 1
1544 self.wanted = _GetWantedNodes(self, self.op.names)
1546 self.wanted = locking.ALL_SET
1548 self.do_locking = self._FIELDS_STATIC.NonMatching(self.op.output_fields)
1550 # if we don't request only static fields, we need to lock the nodes
1551 self.needed_locks[locking.LEVEL_NODE] = self.wanted
1554 def CheckPrereq(self):
1555 """Check prerequisites.
1558 # The validation of the node list is done in the _GetWantedNodes,
1559 # if non empty, and if empty, there's no validation to do
1562 def Exec(self, feedback_fn):
1563 """Computes the list of nodes and their attributes.
1566 all_info = self.cfg.GetAllNodesInfo()
1568 nodenames = self.acquired_locks[locking.LEVEL_NODE]
1569 elif self.wanted != locking.ALL_SET:
1570 nodenames = self.wanted
1571 missing = set(nodenames).difference(all_info.keys())
1573 raise errors.OpExecError(
1574 "Some nodes were removed before retrieving their data: %s" % missing)
1576 nodenames = all_info.keys()
1578 nodenames = utils.NiceSort(nodenames)
1579 nodelist = [all_info[name] for name in nodenames]
1581 # begin data gathering
1585 node_data = self.rpc.call_node_info(nodenames, self.cfg.GetVGName(),
1586 self.cfg.GetHypervisorType())
1587 for name in nodenames:
1588 nodeinfo = node_data.get(name, None)
1591 "mtotal": utils.TryConvert(int, nodeinfo['memory_total']),
1592 "mnode": utils.TryConvert(int, nodeinfo['memory_dom0']),
1593 "mfree": utils.TryConvert(int, nodeinfo['memory_free']),
1594 "dtotal": utils.TryConvert(int, nodeinfo['vg_size']),
1595 "dfree": utils.TryConvert(int, nodeinfo['vg_free']),
1596 "ctotal": utils.TryConvert(int, nodeinfo['cpu_total']),
1597 "bootid": nodeinfo['bootid'],
1600 live_data[name] = {}
1602 live_data = dict.fromkeys(nodenames, {})
1604 node_to_primary = dict([(name, set()) for name in nodenames])
1605 node_to_secondary = dict([(name, set()) for name in nodenames])
1607 inst_fields = frozenset(("pinst_cnt", "pinst_list",
1608 "sinst_cnt", "sinst_list"))
1609 if inst_fields & frozenset(self.op.output_fields):
1610 instancelist = self.cfg.GetInstanceList()
1612 for instance_name in instancelist:
1613 inst = self.cfg.GetInstanceInfo(instance_name)
1614 if inst.primary_node in node_to_primary:
1615 node_to_primary[inst.primary_node].add(inst.name)
1616 for secnode in inst.secondary_nodes:
1617 if secnode in node_to_secondary:
1618 node_to_secondary[secnode].add(inst.name)
1620 # end data gathering
1623 for node in nodelist:
1625 for field in self.op.output_fields:
1628 elif field == "pinst_list":
1629 val = list(node_to_primary[node.name])
1630 elif field == "sinst_list":
1631 val = list(node_to_secondary[node.name])
1632 elif field == "pinst_cnt":
1633 val = len(node_to_primary[node.name])
1634 elif field == "sinst_cnt":
1635 val = len(node_to_secondary[node.name])
1636 elif field == "pip":
1637 val = node.primary_ip
1638 elif field == "sip":
1639 val = node.secondary_ip
1640 elif field == "tags":
1641 val = list(node.GetTags())
1642 elif field == "serial_no":
1643 val = node.serial_no
1644 elif self._FIELDS_DYNAMIC.Matches(field):
1645 val = live_data[node.name].get(field, None)
1647 raise errors.ParameterError(field)
1648 node_output.append(val)
1649 output.append(node_output)
1654 class LUQueryNodeVolumes(NoHooksLU):
1655 """Logical unit for getting volumes on node(s).
1658 _OP_REQP = ["nodes", "output_fields"]
1660 _FIELDS_DYNAMIC = _FieldSet("phys", "vg", "name", "size", "instance")
1661 _FIELDS_STATIC = _FieldSet("node")
1663 def ExpandNames(self):
1664 _CheckOutputFields(static=self._FIELDS_STATIC,
1665 dynamic=self._FIELDS_DYNAMIC,
1666 selected=self.op.output_fields)
1668 self.needed_locks = {}
1669 self.share_locks[locking.LEVEL_NODE] = 1
1670 if not self.op.nodes:
1671 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
1673 self.needed_locks[locking.LEVEL_NODE] = \
1674 _GetWantedNodes(self, self.op.nodes)
1676 def CheckPrereq(self):
1677 """Check prerequisites.
1679 This checks that the fields required are valid output fields.
1682 self.nodes = self.acquired_locks[locking.LEVEL_NODE]
1684 def Exec(self, feedback_fn):
1685 """Computes the list of nodes and their attributes.
1688 nodenames = self.nodes
1689 volumes = self.rpc.call_node_volumes(nodenames)
1691 ilist = [self.cfg.GetInstanceInfo(iname) for iname
1692 in self.cfg.GetInstanceList()]
1694 lv_by_node = dict([(inst, inst.MapLVsByNode()) for inst in ilist])
1697 for node in nodenames:
1698 if node not in volumes or not volumes[node]:
1701 node_vols = volumes[node][:]
1702 node_vols.sort(key=lambda vol: vol['dev'])
1704 for vol in node_vols:
1706 for field in self.op.output_fields:
1709 elif field == "phys":
1713 elif field == "name":
1715 elif field == "size":
1716 val = int(float(vol['size']))
1717 elif field == "instance":
1719 if node not in lv_by_node[inst]:
1721 if vol['name'] in lv_by_node[inst][node]:
1727 raise errors.ParameterError(field)
1728 node_output.append(str(val))
1730 output.append(node_output)
1735 class LUAddNode(LogicalUnit):
1736 """Logical unit for adding node to the cluster.
1740 HTYPE = constants.HTYPE_NODE
1741 _OP_REQP = ["node_name"]
1743 def BuildHooksEnv(self):
1746 This will run on all nodes before, and on all nodes + the new node after.
1750 "OP_TARGET": self.op.node_name,
1751 "NODE_NAME": self.op.node_name,
1752 "NODE_PIP": self.op.primary_ip,
1753 "NODE_SIP": self.op.secondary_ip,
1755 nodes_0 = self.cfg.GetNodeList()
1756 nodes_1 = nodes_0 + [self.op.node_name, ]
1757 return env, nodes_0, nodes_1
1759 def CheckPrereq(self):
1760 """Check prerequisites.
1763 - the new node is not already in the config
1765 - its parameters (single/dual homed) matches the cluster
1767 Any errors are signalled by raising errors.OpPrereqError.
1770 node_name = self.op.node_name
1773 dns_data = utils.HostInfo(node_name)
1775 node = dns_data.name
1776 primary_ip = self.op.primary_ip = dns_data.ip
1777 secondary_ip = getattr(self.op, "secondary_ip", None)
1778 if secondary_ip is None:
1779 secondary_ip = primary_ip
1780 if not utils.IsValidIP(secondary_ip):
1781 raise errors.OpPrereqError("Invalid secondary IP given")
1782 self.op.secondary_ip = secondary_ip
1784 node_list = cfg.GetNodeList()
1785 if not self.op.readd and node in node_list:
1786 raise errors.OpPrereqError("Node %s is already in the configuration" %
1788 elif self.op.readd and node not in node_list:
1789 raise errors.OpPrereqError("Node %s is not in the configuration" % node)
1791 for existing_node_name in node_list:
1792 existing_node = cfg.GetNodeInfo(existing_node_name)
1794 if self.op.readd and node == existing_node_name:
1795 if (existing_node.primary_ip != primary_ip or
1796 existing_node.secondary_ip != secondary_ip):
1797 raise errors.OpPrereqError("Readded node doesn't have the same IP"
1798 " address configuration as before")
1801 if (existing_node.primary_ip == primary_ip or
1802 existing_node.secondary_ip == primary_ip or
1803 existing_node.primary_ip == secondary_ip or
1804 existing_node.secondary_ip == secondary_ip):
1805 raise errors.OpPrereqError("New node ip address(es) conflict with"
1806 " existing node %s" % existing_node.name)
1808 # check that the type of the node (single versus dual homed) is the
1809 # same as for the master
1810 myself = cfg.GetNodeInfo(self.cfg.GetMasterNode())
1811 master_singlehomed = myself.secondary_ip == myself.primary_ip
1812 newbie_singlehomed = secondary_ip == primary_ip
1813 if master_singlehomed != newbie_singlehomed:
1814 if master_singlehomed:
1815 raise errors.OpPrereqError("The master has no private ip but the"
1816 " new node has one")
1818 raise errors.OpPrereqError("The master has a private ip but the"
1819 " new node doesn't have one")
1821 # checks reachablity
1822 if not utils.TcpPing(primary_ip, constants.DEFAULT_NODED_PORT):
1823 raise errors.OpPrereqError("Node not reachable by ping")
1825 if not newbie_singlehomed:
1826 # check reachability from my secondary ip to newbie's secondary ip
1827 if not utils.TcpPing(secondary_ip, constants.DEFAULT_NODED_PORT,
1828 source=myself.secondary_ip):
1829 raise errors.OpPrereqError("Node secondary ip not reachable by TCP"
1830 " based ping to noded port")
1832 self.new_node = objects.Node(name=node,
1833 primary_ip=primary_ip,
1834 secondary_ip=secondary_ip)
1836 def Exec(self, feedback_fn):
1837 """Adds the new node to the cluster.
1840 new_node = self.new_node
1841 node = new_node.name
1843 # check connectivity
1844 result = self.rpc.call_version([node])[node]
1846 if constants.PROTOCOL_VERSION == result:
1847 logging.info("Communication to node %s fine, sw version %s match",
1850 raise errors.OpExecError("Version mismatch master version %s,"
1851 " node version %s" %
1852 (constants.PROTOCOL_VERSION, result))
1854 raise errors.OpExecError("Cannot get version from the new node")
1857 logging.info("Copy ssh key to node %s", node)
1858 priv_key, pub_key, _ = ssh.GetUserFiles(constants.GANETI_RUNAS)
1860 keyfiles = [constants.SSH_HOST_DSA_PRIV, constants.SSH_HOST_DSA_PUB,
1861 constants.SSH_HOST_RSA_PRIV, constants.SSH_HOST_RSA_PUB,
1867 keyarray.append(f.read())
1871 result = self.rpc.call_node_add(node, keyarray[0], keyarray[1],
1873 keyarray[3], keyarray[4], keyarray[5])
1876 raise errors.OpExecError("Cannot transfer ssh keys to the new node")
1878 # Add node to our /etc/hosts, and add key to known_hosts
1879 utils.AddHostToEtcHosts(new_node.name)
1881 if new_node.secondary_ip != new_node.primary_ip:
1882 if not self.rpc.call_node_has_ip_address(new_node.name,
1883 new_node.secondary_ip):
1884 raise errors.OpExecError("Node claims it doesn't have the secondary ip"
1885 " you gave (%s). Please fix and re-run this"
1886 " command." % new_node.secondary_ip)
1888 node_verify_list = [self.cfg.GetMasterNode()]
1889 node_verify_param = {
1891 # TODO: do a node-net-test as well?
1894 result = self.rpc.call_node_verify(node_verify_list, node_verify_param,
1895 self.cfg.GetClusterName())
1896 for verifier in node_verify_list:
1897 if not result[verifier]:
1898 raise errors.OpExecError("Cannot communicate with %s's node daemon"
1899 " for remote verification" % verifier)
1900 if result[verifier]['nodelist']:
1901 for failed in result[verifier]['nodelist']:
1902 feedback_fn("ssh/hostname verification failed %s -> %s" %
1903 (verifier, result[verifier]['nodelist'][failed]))
1904 raise errors.OpExecError("ssh/hostname verification failed.")
1906 # Distribute updated /etc/hosts and known_hosts to all nodes,
1907 # including the node just added
1908 myself = self.cfg.GetNodeInfo(self.cfg.GetMasterNode())
1909 dist_nodes = self.cfg.GetNodeList()
1910 if not self.op.readd:
1911 dist_nodes.append(node)
1912 if myself.name in dist_nodes:
1913 dist_nodes.remove(myself.name)
1915 logging.debug("Copying hosts and known_hosts to all nodes")
1916 for fname in (constants.ETC_HOSTS, constants.SSH_KNOWN_HOSTS_FILE):
1917 result = self.rpc.call_upload_file(dist_nodes, fname)
1918 for to_node in dist_nodes:
1919 if not result[to_node]:
1920 logging.error("Copy of file %s to node %s failed", fname, to_node)
1923 if constants.HT_XEN_HVM in self.cfg.GetClusterInfo().enabled_hypervisors:
1924 to_copy.append(constants.VNC_PASSWORD_FILE)
1925 for fname in to_copy:
1926 result = self.rpc.call_upload_file([node], fname)
1927 if not result[node]:
1928 logging.error("Could not copy file %s to node %s", fname, node)
1931 self.context.ReaddNode(new_node)
1933 self.context.AddNode(new_node)
1936 class LUQueryClusterInfo(NoHooksLU):
1937 """Query cluster configuration.
1944 def ExpandNames(self):
1945 self.needed_locks = {}
1947 def CheckPrereq(self):
1948 """No prerequsites needed for this LU.
1953 def Exec(self, feedback_fn):
1954 """Return cluster config.
1957 cluster = self.cfg.GetClusterInfo()
1959 "software_version": constants.RELEASE_VERSION,
1960 "protocol_version": constants.PROTOCOL_VERSION,
1961 "config_version": constants.CONFIG_VERSION,
1962 "os_api_version": constants.OS_API_VERSION,
1963 "export_version": constants.EXPORT_VERSION,
1964 "architecture": (platform.architecture()[0], platform.machine()),
1965 "name": cluster.cluster_name,
1966 "master": cluster.master_node,
1967 "default_hypervisor": cluster.default_hypervisor,
1968 "enabled_hypervisors": cluster.enabled_hypervisors,
1969 "hvparams": cluster.hvparams,
1970 "beparams": cluster.beparams,
1976 class LUQueryConfigValues(NoHooksLU):
1977 """Return configuration values.
1982 _FIELDS_DYNAMIC = _FieldSet()
1983 _FIELDS_STATIC = _FieldSet("cluster_name", "master_node", "drain_flag")
1985 def ExpandNames(self):
1986 self.needed_locks = {}
1988 _CheckOutputFields(static=self._FIELDS_STATIC,
1989 dynamic=self._FIELDS_DYNAMIC,
1990 selected=self.op.output_fields)
1992 def CheckPrereq(self):
1993 """No prerequisites.
1998 def Exec(self, feedback_fn):
1999 """Dump a representation of the cluster config to the standard output.
2003 for field in self.op.output_fields:
2004 if field == "cluster_name":
2005 entry = self.cfg.GetClusterName()
2006 elif field == "master_node":
2007 entry = self.cfg.GetMasterNode()
2008 elif field == "drain_flag":
2009 entry = os.path.exists(constants.JOB_QUEUE_DRAIN_FILE)
2011 raise errors.ParameterError(field)
2012 values.append(entry)
2016 class LUActivateInstanceDisks(NoHooksLU):
2017 """Bring up an instance's disks.
2020 _OP_REQP = ["instance_name"]
2023 def ExpandNames(self):
2024 self._ExpandAndLockInstance()
2025 self.needed_locks[locking.LEVEL_NODE] = []
2026 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
2028 def DeclareLocks(self, level):
2029 if level == locking.LEVEL_NODE:
2030 self._LockInstancesNodes()
2032 def CheckPrereq(self):
2033 """Check prerequisites.
2035 This checks that the instance is in the cluster.
2038 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2039 assert self.instance is not None, \
2040 "Cannot retrieve locked instance %s" % self.op.instance_name
2042 def Exec(self, feedback_fn):
2043 """Activate the disks.
2046 disks_ok, disks_info = _AssembleInstanceDisks(self, self.instance)
2048 raise errors.OpExecError("Cannot activate block devices")
2053 def _AssembleInstanceDisks(lu, instance, ignore_secondaries=False):
2054 """Prepare the block devices for an instance.
2056 This sets up the block devices on all nodes.
2059 instance: a ganeti.objects.Instance object
2060 ignore_secondaries: if true, errors on secondary nodes won't result
2061 in an error return from the function
2064 false if the operation failed
2065 list of (host, instance_visible_name, node_visible_name) if the operation
2066 suceeded with the mapping from node devices to instance devices
2070 iname = instance.name
2071 # With the two passes mechanism we try to reduce the window of
2072 # opportunity for the race condition of switching DRBD to primary
2073 # before handshaking occured, but we do not eliminate it
2075 # The proper fix would be to wait (with some limits) until the
2076 # connection has been made and drbd transitions from WFConnection
2077 # into any other network-connected state (Connected, SyncTarget,
2080 # 1st pass, assemble on all nodes in secondary mode
2081 for inst_disk in instance.disks:
2082 for node, node_disk in inst_disk.ComputeNodeTree(instance.primary_node):
2083 lu.cfg.SetDiskID(node_disk, node)
2084 result = lu.rpc.call_blockdev_assemble(node, node_disk, iname, False)
2086 lu.proc.LogWarning("Could not prepare block device %s on node %s"
2087 " (is_primary=False, pass=1)",
2088 inst_disk.iv_name, node)
2089 if not ignore_secondaries:
2092 # FIXME: race condition on drbd migration to primary
2094 # 2nd pass, do only the primary node
2095 for inst_disk in instance.disks:
2096 for node, node_disk in inst_disk.ComputeNodeTree(instance.primary_node):
2097 if node != instance.primary_node:
2099 lu.cfg.SetDiskID(node_disk, node)
2100 result = lu.rpc.call_blockdev_assemble(node, node_disk, iname, True)
2102 lu.proc.LogWarning("Could not prepare block device %s on node %s"
2103 " (is_primary=True, pass=2)",
2104 inst_disk.iv_name, node)
2106 device_info.append((instance.primary_node, inst_disk.iv_name, result))
2108 # leave the disks configured for the primary node
2109 # this is a workaround that would be fixed better by
2110 # improving the logical/physical id handling
2111 for disk in instance.disks:
2112 lu.cfg.SetDiskID(disk, instance.primary_node)
2114 return disks_ok, device_info
2117 def _StartInstanceDisks(lu, instance, force):
2118 """Start the disks of an instance.
2121 disks_ok, dummy = _AssembleInstanceDisks(lu, instance,
2122 ignore_secondaries=force)
2124 _ShutdownInstanceDisks(lu, instance)
2125 if force is not None and not force:
2126 lu.proc.LogWarning("", hint="If the message above refers to a"
2128 " you can retry the operation using '--force'.")
2129 raise errors.OpExecError("Disk consistency error")
2132 class LUDeactivateInstanceDisks(NoHooksLU):
2133 """Shutdown an instance's disks.
2136 _OP_REQP = ["instance_name"]
2139 def ExpandNames(self):
2140 self._ExpandAndLockInstance()
2141 self.needed_locks[locking.LEVEL_NODE] = []
2142 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
2144 def DeclareLocks(self, level):
2145 if level == locking.LEVEL_NODE:
2146 self._LockInstancesNodes()
2148 def CheckPrereq(self):
2149 """Check prerequisites.
2151 This checks that the instance is in the cluster.
2154 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2155 assert self.instance is not None, \
2156 "Cannot retrieve locked instance %s" % self.op.instance_name
2158 def Exec(self, feedback_fn):
2159 """Deactivate the disks
2162 instance = self.instance
2163 _SafeShutdownInstanceDisks(self, instance)
2166 def _SafeShutdownInstanceDisks(lu, instance):
2167 """Shutdown block devices of an instance.
2169 This function checks if an instance is running, before calling
2170 _ShutdownInstanceDisks.
2173 ins_l = lu.rpc.call_instance_list([instance.primary_node],
2174 [instance.hypervisor])
2175 ins_l = ins_l[instance.primary_node]
2176 if not type(ins_l) is list:
2177 raise errors.OpExecError("Can't contact node '%s'" %
2178 instance.primary_node)
2180 if instance.name in ins_l:
2181 raise errors.OpExecError("Instance is running, can't shutdown"
2184 _ShutdownInstanceDisks(lu, instance)
2187 def _ShutdownInstanceDisks(lu, instance, ignore_primary=False):
2188 """Shutdown block devices of an instance.
2190 This does the shutdown on all nodes of the instance.
2192 If the ignore_primary is false, errors on the primary node are
2197 for disk in instance.disks:
2198 for node, top_disk in disk.ComputeNodeTree(instance.primary_node):
2199 lu.cfg.SetDiskID(top_disk, node)
2200 if not lu.rpc.call_blockdev_shutdown(node, top_disk):
2201 logging.error("Could not shutdown block device %s on node %s",
2203 if not ignore_primary or node != instance.primary_node:
2208 def _CheckNodeFreeMemory(lu, node, reason, requested, hypervisor):
2209 """Checks if a node has enough free memory.
2211 This function check if a given node has the needed amount of free
2212 memory. In case the node has less memory or we cannot get the
2213 information from the node, this function raise an OpPrereqError
2216 @type lu: C{LogicalUnit}
2217 @param lu: a logical unit from which we get configuration data
2219 @param node: the node to check
2220 @type reason: C{str}
2221 @param reason: string to use in the error message
2222 @type requested: C{int}
2223 @param requested: the amount of memory in MiB to check for
2224 @type hypervisor: C{str}
2225 @param hypervisor: the hypervisor to ask for memory stats
2226 @raise errors.OpPrereqError: if the node doesn't have enough memory, or
2227 we cannot check the node
2230 nodeinfo = lu.rpc.call_node_info([node], lu.cfg.GetVGName(), hypervisor)
2231 if not nodeinfo or not isinstance(nodeinfo, dict):
2232 raise errors.OpPrereqError("Could not contact node %s for resource"
2233 " information" % (node,))
2235 free_mem = nodeinfo[node].get('memory_free')
2236 if not isinstance(free_mem, int):
2237 raise errors.OpPrereqError("Can't compute free memory on node %s, result"
2238 " was '%s'" % (node, free_mem))
2239 if requested > free_mem:
2240 raise errors.OpPrereqError("Not enough memory on node %s for %s:"
2241 " needed %s MiB, available %s MiB" %
2242 (node, reason, requested, free_mem))
2245 class LUStartupInstance(LogicalUnit):
2246 """Starts an instance.
2249 HPATH = "instance-start"
2250 HTYPE = constants.HTYPE_INSTANCE
2251 _OP_REQP = ["instance_name", "force"]
2254 def ExpandNames(self):
2255 self._ExpandAndLockInstance()
2256 self.needed_locks[locking.LEVEL_NODE] = []
2257 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
2259 def DeclareLocks(self, level):
2260 if level == locking.LEVEL_NODE:
2261 self._LockInstancesNodes()
2263 def BuildHooksEnv(self):
2266 This runs on master, primary and secondary nodes of the instance.
2270 "FORCE": self.op.force,
2272 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
2273 nl = ([self.cfg.GetMasterNode(), self.instance.primary_node] +
2274 list(self.instance.secondary_nodes))
2277 def CheckPrereq(self):
2278 """Check prerequisites.
2280 This checks that the instance is in the cluster.
2283 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2284 assert self.instance is not None, \
2285 "Cannot retrieve locked instance %s" % self.op.instance_name
2287 bep = self.cfg.GetClusterInfo().FillBE(instance)
2288 # check bridges existance
2289 _CheckInstanceBridgesExist(self, instance)
2291 _CheckNodeFreeMemory(self, instance.primary_node,
2292 "starting instance %s" % instance.name,
2293 bep[constants.BE_MEMORY], instance.hypervisor)
2295 def Exec(self, feedback_fn):
2296 """Start the instance.
2299 instance = self.instance
2300 force = self.op.force
2301 extra_args = getattr(self.op, "extra_args", "")
2303 self.cfg.MarkInstanceUp(instance.name)
2305 node_current = instance.primary_node
2307 _StartInstanceDisks(self, instance, force)
2309 if not self.rpc.call_instance_start(node_current, instance, extra_args):
2310 _ShutdownInstanceDisks(self, instance)
2311 raise errors.OpExecError("Could not start instance")
2314 class LURebootInstance(LogicalUnit):
2315 """Reboot an instance.
2318 HPATH = "instance-reboot"
2319 HTYPE = constants.HTYPE_INSTANCE
2320 _OP_REQP = ["instance_name", "ignore_secondaries", "reboot_type"]
2323 def ExpandNames(self):
2324 if self.op.reboot_type not in [constants.INSTANCE_REBOOT_SOFT,
2325 constants.INSTANCE_REBOOT_HARD,
2326 constants.INSTANCE_REBOOT_FULL]:
2327 raise errors.ParameterError("reboot type not in [%s, %s, %s]" %
2328 (constants.INSTANCE_REBOOT_SOFT,
2329 constants.INSTANCE_REBOOT_HARD,
2330 constants.INSTANCE_REBOOT_FULL))
2331 self._ExpandAndLockInstance()
2332 self.needed_locks[locking.LEVEL_NODE] = []
2333 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
2335 def DeclareLocks(self, level):
2336 if level == locking.LEVEL_NODE:
2337 primary_only = not constants.INSTANCE_REBOOT_FULL
2338 self._LockInstancesNodes(primary_only=primary_only)
2340 def BuildHooksEnv(self):
2343 This runs on master, primary and secondary nodes of the instance.
2347 "IGNORE_SECONDARIES": self.op.ignore_secondaries,
2349 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
2350 nl = ([self.cfg.GetMasterNode(), self.instance.primary_node] +
2351 list(self.instance.secondary_nodes))
2354 def CheckPrereq(self):
2355 """Check prerequisites.
2357 This checks that the instance is in the cluster.
2360 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2361 assert self.instance is not None, \
2362 "Cannot retrieve locked instance %s" % self.op.instance_name
2364 # check bridges existance
2365 _CheckInstanceBridgesExist(self, instance)
2367 def Exec(self, feedback_fn):
2368 """Reboot the instance.
2371 instance = self.instance
2372 ignore_secondaries = self.op.ignore_secondaries
2373 reboot_type = self.op.reboot_type
2374 extra_args = getattr(self.op, "extra_args", "")
2376 node_current = instance.primary_node
2378 if reboot_type in [constants.INSTANCE_REBOOT_SOFT,
2379 constants.INSTANCE_REBOOT_HARD]:
2380 if not self.rpc.call_instance_reboot(node_current, instance,
2381 reboot_type, extra_args):
2382 raise errors.OpExecError("Could not reboot instance")
2384 if not self.rpc.call_instance_shutdown(node_current, instance):
2385 raise errors.OpExecError("could not shutdown instance for full reboot")
2386 _ShutdownInstanceDisks(self, instance)
2387 _StartInstanceDisks(self, instance, ignore_secondaries)
2388 if not self.rpc.call_instance_start(node_current, instance, extra_args):
2389 _ShutdownInstanceDisks(self, instance)
2390 raise errors.OpExecError("Could not start instance for full reboot")
2392 self.cfg.MarkInstanceUp(instance.name)
2395 class LUShutdownInstance(LogicalUnit):
2396 """Shutdown an instance.
2399 HPATH = "instance-stop"
2400 HTYPE = constants.HTYPE_INSTANCE
2401 _OP_REQP = ["instance_name"]
2404 def ExpandNames(self):
2405 self._ExpandAndLockInstance()
2406 self.needed_locks[locking.LEVEL_NODE] = []
2407 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
2409 def DeclareLocks(self, level):
2410 if level == locking.LEVEL_NODE:
2411 self._LockInstancesNodes()
2413 def BuildHooksEnv(self):
2416 This runs on master, primary and secondary nodes of the instance.
2419 env = _BuildInstanceHookEnvByObject(self, self.instance)
2420 nl = ([self.cfg.GetMasterNode(), self.instance.primary_node] +
2421 list(self.instance.secondary_nodes))
2424 def CheckPrereq(self):
2425 """Check prerequisites.
2427 This checks that the instance is in the cluster.
2430 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2431 assert self.instance is not None, \
2432 "Cannot retrieve locked instance %s" % self.op.instance_name
2434 def Exec(self, feedback_fn):
2435 """Shutdown the instance.
2438 instance = self.instance
2439 node_current = instance.primary_node
2440 self.cfg.MarkInstanceDown(instance.name)
2441 if not self.rpc.call_instance_shutdown(node_current, instance):
2442 self.proc.LogWarning("Could not shutdown instance")
2444 _ShutdownInstanceDisks(self, instance)
2447 class LUReinstallInstance(LogicalUnit):
2448 """Reinstall an instance.
2451 HPATH = "instance-reinstall"
2452 HTYPE = constants.HTYPE_INSTANCE
2453 _OP_REQP = ["instance_name"]
2456 def ExpandNames(self):
2457 self._ExpandAndLockInstance()
2458 self.needed_locks[locking.LEVEL_NODE] = []
2459 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
2461 def DeclareLocks(self, level):
2462 if level == locking.LEVEL_NODE:
2463 self._LockInstancesNodes()
2465 def BuildHooksEnv(self):
2468 This runs on master, primary and secondary nodes of the instance.
2471 env = _BuildInstanceHookEnvByObject(self, self.instance)
2472 nl = ([self.cfg.GetMasterNode(), self.instance.primary_node] +
2473 list(self.instance.secondary_nodes))
2476 def CheckPrereq(self):
2477 """Check prerequisites.
2479 This checks that the instance is in the cluster and is not running.
2482 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2483 assert instance is not None, \
2484 "Cannot retrieve locked instance %s" % self.op.instance_name
2486 if instance.disk_template == constants.DT_DISKLESS:
2487 raise errors.OpPrereqError("Instance '%s' has no disks" %
2488 self.op.instance_name)
2489 if instance.status != "down":
2490 raise errors.OpPrereqError("Instance '%s' is marked to be up" %
2491 self.op.instance_name)
2492 remote_info = self.rpc.call_instance_info(instance.primary_node,
2494 instance.hypervisor)
2496 raise errors.OpPrereqError("Instance '%s' is running on the node %s" %
2497 (self.op.instance_name,
2498 instance.primary_node))
2500 self.op.os_type = getattr(self.op, "os_type", None)
2501 if self.op.os_type is not None:
2503 pnode = self.cfg.GetNodeInfo(
2504 self.cfg.ExpandNodeName(instance.primary_node))
2506 raise errors.OpPrereqError("Primary node '%s' is unknown" %
2508 os_obj = self.rpc.call_os_get(pnode.name, self.op.os_type)
2510 raise errors.OpPrereqError("OS '%s' not in supported OS list for"
2511 " primary node" % self.op.os_type)
2513 self.instance = instance
2515 def Exec(self, feedback_fn):
2516 """Reinstall the instance.
2519 inst = self.instance
2521 if self.op.os_type is not None:
2522 feedback_fn("Changing OS to '%s'..." % self.op.os_type)
2523 inst.os = self.op.os_type
2524 self.cfg.Update(inst)
2526 _StartInstanceDisks(self, inst, None)
2528 feedback_fn("Running the instance OS create scripts...")
2529 if not self.rpc.call_instance_os_add(inst.primary_node, inst):
2530 raise errors.OpExecError("Could not install OS for instance %s"
2532 (inst.name, inst.primary_node))
2534 _ShutdownInstanceDisks(self, inst)
2537 class LURenameInstance(LogicalUnit):
2538 """Rename an instance.
2541 HPATH = "instance-rename"
2542 HTYPE = constants.HTYPE_INSTANCE
2543 _OP_REQP = ["instance_name", "new_name"]
2545 def BuildHooksEnv(self):
2548 This runs on master, primary and secondary nodes of the instance.
2551 env = _BuildInstanceHookEnvByObject(self, self.instance)
2552 env["INSTANCE_NEW_NAME"] = self.op.new_name
2553 nl = ([self.cfg.GetMasterNode(), self.instance.primary_node] +
2554 list(self.instance.secondary_nodes))
2557 def CheckPrereq(self):
2558 """Check prerequisites.
2560 This checks that the instance is in the cluster and is not running.
2563 instance = self.cfg.GetInstanceInfo(
2564 self.cfg.ExpandInstanceName(self.op.instance_name))
2565 if instance is None:
2566 raise errors.OpPrereqError("Instance '%s' not known" %
2567 self.op.instance_name)
2568 if instance.status != "down":
2569 raise errors.OpPrereqError("Instance '%s' is marked to be up" %
2570 self.op.instance_name)
2571 remote_info = self.rpc.call_instance_info(instance.primary_node,
2573 instance.hypervisor)
2575 raise errors.OpPrereqError("Instance '%s' is running on the node %s" %
2576 (self.op.instance_name,
2577 instance.primary_node))
2578 self.instance = instance
2580 # new name verification
2581 name_info = utils.HostInfo(self.op.new_name)
2583 self.op.new_name = new_name = name_info.name
2584 instance_list = self.cfg.GetInstanceList()
2585 if new_name in instance_list:
2586 raise errors.OpPrereqError("Instance '%s' is already in the cluster" %
2589 if not getattr(self.op, "ignore_ip", False):
2590 if utils.TcpPing(name_info.ip, constants.DEFAULT_NODED_PORT):
2591 raise errors.OpPrereqError("IP %s of instance %s already in use" %
2592 (name_info.ip, new_name))
2595 def Exec(self, feedback_fn):
2596 """Reinstall the instance.
2599 inst = self.instance
2600 old_name = inst.name
2602 if inst.disk_template == constants.DT_FILE:
2603 old_file_storage_dir = os.path.dirname(inst.disks[0].logical_id[1])
2605 self.cfg.RenameInstance(inst.name, self.op.new_name)
2606 # Change the instance lock. This is definitely safe while we hold the BGL
2607 self.context.glm.remove(locking.LEVEL_INSTANCE, old_name)
2608 self.context.glm.add(locking.LEVEL_INSTANCE, self.op.new_name)
2610 # re-read the instance from the configuration after rename
2611 inst = self.cfg.GetInstanceInfo(self.op.new_name)
2613 if inst.disk_template == constants.DT_FILE:
2614 new_file_storage_dir = os.path.dirname(inst.disks[0].logical_id[1])
2615 result = self.rpc.call_file_storage_dir_rename(inst.primary_node,
2616 old_file_storage_dir,
2617 new_file_storage_dir)
2620 raise errors.OpExecError("Could not connect to node '%s' to rename"
2621 " directory '%s' to '%s' (but the instance"
2622 " has been renamed in Ganeti)" % (
2623 inst.primary_node, old_file_storage_dir,
2624 new_file_storage_dir))
2627 raise errors.OpExecError("Could not rename directory '%s' to '%s'"
2628 " (but the instance has been renamed in"
2629 " Ganeti)" % (old_file_storage_dir,
2630 new_file_storage_dir))
2632 _StartInstanceDisks(self, inst, None)
2634 if not self.rpc.call_instance_run_rename(inst.primary_node, inst,
2636 msg = ("Could not run OS rename script for instance %s on node %s"
2637 " (but the instance has been renamed in Ganeti)" %
2638 (inst.name, inst.primary_node))
2639 self.proc.LogWarning(msg)
2641 _ShutdownInstanceDisks(self, inst)
2644 class LURemoveInstance(LogicalUnit):
2645 """Remove an instance.
2648 HPATH = "instance-remove"
2649 HTYPE = constants.HTYPE_INSTANCE
2650 _OP_REQP = ["instance_name", "ignore_failures"]
2653 def ExpandNames(self):
2654 self._ExpandAndLockInstance()
2655 self.needed_locks[locking.LEVEL_NODE] = []
2656 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
2658 def DeclareLocks(self, level):
2659 if level == locking.LEVEL_NODE:
2660 self._LockInstancesNodes()
2662 def BuildHooksEnv(self):
2665 This runs on master, primary and secondary nodes of the instance.
2668 env = _BuildInstanceHookEnvByObject(self, self.instance)
2669 nl = [self.cfg.GetMasterNode()]
2672 def CheckPrereq(self):
2673 """Check prerequisites.
2675 This checks that the instance is in the cluster.
2678 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2679 assert self.instance is not None, \
2680 "Cannot retrieve locked instance %s" % self.op.instance_name
2682 def Exec(self, feedback_fn):
2683 """Remove the instance.
2686 instance = self.instance
2687 logging.info("Shutting down instance %s on node %s",
2688 instance.name, instance.primary_node)
2690 if not self.rpc.call_instance_shutdown(instance.primary_node, instance):
2691 if self.op.ignore_failures:
2692 feedback_fn("Warning: can't shutdown instance")
2694 raise errors.OpExecError("Could not shutdown instance %s on node %s" %
2695 (instance.name, instance.primary_node))
2697 logging.info("Removing block devices for instance %s", instance.name)
2699 if not _RemoveDisks(self, instance):
2700 if self.op.ignore_failures:
2701 feedback_fn("Warning: can't remove instance's disks")
2703 raise errors.OpExecError("Can't remove instance's disks")
2705 logging.info("Removing instance %s out of cluster config", instance.name)
2707 self.cfg.RemoveInstance(instance.name)
2708 self.remove_locks[locking.LEVEL_INSTANCE] = instance.name
2711 class LUQueryInstances(NoHooksLU):
2712 """Logical unit for querying instances.
2715 _OP_REQP = ["output_fields", "names"]
2717 _FIELDS_STATIC = _FieldSet(*["name", "os", "pnode", "snodes",
2718 "admin_state", "admin_ram",
2719 "disk_template", "ip", "mac", "bridge",
2720 "sda_size", "sdb_size", "vcpus", "tags",
2721 "network_port", "beparams",
2722 "serial_no", "hypervisor", "hvparams",] +
2724 for name in constants.HVS_PARAMETERS] +
2726 for name in constants.BES_PARAMETERS])
2727 _FIELDS_DYNAMIC = _FieldSet("oper_state", "oper_ram", "status")
2730 def ExpandNames(self):
2731 _CheckOutputFields(static=self._FIELDS_STATIC,
2732 dynamic=self._FIELDS_DYNAMIC,
2733 selected=self.op.output_fields)
2735 self.needed_locks = {}
2736 self.share_locks[locking.LEVEL_INSTANCE] = 1
2737 self.share_locks[locking.LEVEL_NODE] = 1
2740 self.wanted = _GetWantedInstances(self, self.op.names)
2742 self.wanted = locking.ALL_SET
2744 self.do_locking = self._FIELDS_STATIC.NonMatching(self.op.output_fields)
2746 self.needed_locks[locking.LEVEL_INSTANCE] = self.wanted
2747 self.needed_locks[locking.LEVEL_NODE] = []
2748 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
2750 def DeclareLocks(self, level):
2751 if level == locking.LEVEL_NODE and self.do_locking:
2752 self._LockInstancesNodes()
2754 def CheckPrereq(self):
2755 """Check prerequisites.
2760 def Exec(self, feedback_fn):
2761 """Computes the list of nodes and their attributes.
2764 all_info = self.cfg.GetAllInstancesInfo()
2766 instance_names = self.acquired_locks[locking.LEVEL_INSTANCE]
2767 elif self.wanted != locking.ALL_SET:
2768 instance_names = self.wanted
2769 missing = set(instance_names).difference(all_info.keys())
2771 raise errors.OpExecError(
2772 "Some instances were removed before retrieving their data: %s"
2775 instance_names = all_info.keys()
2777 instance_names = utils.NiceSort(instance_names)
2778 instance_list = [all_info[iname] for iname in instance_names]
2780 # begin data gathering
2782 nodes = frozenset([inst.primary_node for inst in instance_list])
2783 hv_list = list(set([inst.hypervisor for inst in instance_list]))
2788 node_data = self.rpc.call_all_instances_info(nodes, hv_list)
2790 result = node_data[name]
2792 live_data.update(result)
2793 elif result == False:
2794 bad_nodes.append(name)
2795 # else no instance is alive
2797 live_data = dict([(name, {}) for name in instance_names])
2799 # end data gathering
2804 for instance in instance_list:
2806 i_hv = self.cfg.GetClusterInfo().FillHV(instance)
2807 i_be = self.cfg.GetClusterInfo().FillBE(instance)
2808 for field in self.op.output_fields:
2813 elif field == "pnode":
2814 val = instance.primary_node
2815 elif field == "snodes":
2816 val = list(instance.secondary_nodes)
2817 elif field == "admin_state":
2818 val = (instance.status != "down")
2819 elif field == "oper_state":
2820 if instance.primary_node in bad_nodes:
2823 val = bool(live_data.get(instance.name))
2824 elif field == "status":
2825 if instance.primary_node in bad_nodes:
2826 val = "ERROR_nodedown"
2828 running = bool(live_data.get(instance.name))
2830 if instance.status != "down":
2835 if instance.status != "down":
2839 elif field == "oper_ram":
2840 if instance.primary_node in bad_nodes:
2842 elif instance.name in live_data:
2843 val = live_data[instance.name].get("memory", "?")
2846 elif field == "disk_template":
2847 val = instance.disk_template
2849 val = instance.nics[0].ip
2850 elif field == "bridge":
2851 val = instance.nics[0].bridge
2852 elif field == "mac":
2853 val = instance.nics[0].mac
2854 elif field == "sda_size" or field == "sdb_size":
2855 disk = instance.FindDisk(field[:3])
2860 elif field == "tags":
2861 val = list(instance.GetTags())
2862 elif field == "serial_no":
2863 val = instance.serial_no
2864 elif field == "network_port":
2865 val = instance.network_port
2866 elif field == "hypervisor":
2867 val = instance.hypervisor
2868 elif field == "hvparams":
2870 elif (field.startswith(HVPREFIX) and
2871 field[len(HVPREFIX):] in constants.HVS_PARAMETERS):
2872 val = i_hv.get(field[len(HVPREFIX):], None)
2873 elif field == "beparams":
2875 elif (field.startswith(BEPREFIX) and
2876 field[len(BEPREFIX):] in constants.BES_PARAMETERS):
2877 val = i_be.get(field[len(BEPREFIX):], None)
2879 raise errors.ParameterError(field)
2886 class LUFailoverInstance(LogicalUnit):
2887 """Failover an instance.
2890 HPATH = "instance-failover"
2891 HTYPE = constants.HTYPE_INSTANCE
2892 _OP_REQP = ["instance_name", "ignore_consistency"]
2895 def ExpandNames(self):
2896 self._ExpandAndLockInstance()
2897 self.needed_locks[locking.LEVEL_NODE] = []
2898 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
2900 def DeclareLocks(self, level):
2901 if level == locking.LEVEL_NODE:
2902 self._LockInstancesNodes()
2904 def BuildHooksEnv(self):
2907 This runs on master, primary and secondary nodes of the instance.
2911 "IGNORE_CONSISTENCY": self.op.ignore_consistency,
2913 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
2914 nl = [self.cfg.GetMasterNode()] + list(self.instance.secondary_nodes)
2917 def CheckPrereq(self):
2918 """Check prerequisites.
2920 This checks that the instance is in the cluster.
2923 self.instance = instance = self.cfg.GetInstanceInfo(self.op.instance_name)
2924 assert self.instance is not None, \
2925 "Cannot retrieve locked instance %s" % self.op.instance_name
2927 bep = self.cfg.GetClusterInfo().FillBE(instance)
2928 if instance.disk_template not in constants.DTS_NET_MIRROR:
2929 raise errors.OpPrereqError("Instance's disk layout is not"
2930 " network mirrored, cannot failover.")
2932 secondary_nodes = instance.secondary_nodes
2933 if not secondary_nodes:
2934 raise errors.ProgrammerError("no secondary node but using "
2935 "a mirrored disk template")
2937 target_node = secondary_nodes[0]
2938 # check memory requirements on the secondary node
2939 _CheckNodeFreeMemory(self, target_node, "failing over instance %s" %
2940 instance.name, bep[constants.BE_MEMORY],
2941 instance.hypervisor)
2943 # check bridge existance
2944 brlist = [nic.bridge for nic in instance.nics]
2945 if not self.rpc.call_bridges_exist(target_node, brlist):
2946 raise errors.OpPrereqError("One or more target bridges %s does not"
2947 " exist on destination node '%s'" %
2948 (brlist, target_node))
2950 def Exec(self, feedback_fn):
2951 """Failover an instance.
2953 The failover is done by shutting it down on its present node and
2954 starting it on the secondary.
2957 instance = self.instance
2959 source_node = instance.primary_node
2960 target_node = instance.secondary_nodes[0]
2962 feedback_fn("* checking disk consistency between source and target")
2963 for dev in instance.disks:
2964 # for drbd, these are drbd over lvm
2965 if not _CheckDiskConsistency(self, dev, target_node, False):
2966 if instance.status == "up" and not self.op.ignore_consistency:
2967 raise errors.OpExecError("Disk %s is degraded on target node,"
2968 " aborting failover." % dev.iv_name)
2970 feedback_fn("* shutting down instance on source node")
2971 logging.info("Shutting down instance %s on node %s",
2972 instance.name, source_node)
2974 if not self.rpc.call_instance_shutdown(source_node, instance):
2975 if self.op.ignore_consistency:
2976 self.proc.LogWarning("Could not shutdown instance %s on node %s."
2978 " anyway. Please make sure node %s is down",
2979 instance.name, source_node, source_node)
2981 raise errors.OpExecError("Could not shutdown instance %s on node %s" %
2982 (instance.name, source_node))
2984 feedback_fn("* deactivating the instance's disks on source node")
2985 if not _ShutdownInstanceDisks(self, instance, ignore_primary=True):
2986 raise errors.OpExecError("Can't shut down the instance's disks.")
2988 instance.primary_node = target_node
2989 # distribute new instance config to the other nodes
2990 self.cfg.Update(instance)
2992 # Only start the instance if it's marked as up
2993 if instance.status == "up":
2994 feedback_fn("* activating the instance's disks on target node")
2995 logging.info("Starting instance %s on node %s",
2996 instance.name, target_node)
2998 disks_ok, dummy = _AssembleInstanceDisks(self, instance,
2999 ignore_secondaries=True)
3001 _ShutdownInstanceDisks(self, instance)
3002 raise errors.OpExecError("Can't activate the instance's disks")
3004 feedback_fn("* starting the instance on the target node")
3005 if not self.rpc.call_instance_start(target_node, instance, None):
3006 _ShutdownInstanceDisks(self, instance)
3007 raise errors.OpExecError("Could not start instance %s on node %s." %
3008 (instance.name, target_node))
3011 def _CreateBlockDevOnPrimary(lu, node, instance, device, info):
3012 """Create a tree of block devices on the primary node.
3014 This always creates all devices.
3018 for child in device.children:
3019 if not _CreateBlockDevOnPrimary(lu, node, instance, child, info):
3022 lu.cfg.SetDiskID(device, node)
3023 new_id = lu.rpc.call_blockdev_create(node, device, device.size,
3024 instance.name, True, info)
3027 if device.physical_id is None:
3028 device.physical_id = new_id
3032 def _CreateBlockDevOnSecondary(lu, node, instance, device, force, info):
3033 """Create a tree of block devices on a secondary node.
3035 If this device type has to be created on secondaries, create it and
3038 If not, just recurse to children keeping the same 'force' value.
3041 if device.CreateOnSecondary():
3044 for child in device.children:
3045 if not _CreateBlockDevOnSecondary(lu, node, instance,
3046 child, force, info):
3051 lu.cfg.SetDiskID(device, node)
3052 new_id = lu.rpc.call_blockdev_create(node, device, device.size,
3053 instance.name, False, info)
3056 if device.physical_id is None:
3057 device.physical_id = new_id
3061 def _GenerateUniqueNames(lu, exts):
3062 """Generate a suitable LV name.
3064 This will generate a logical volume name for the given instance.
3069 new_id = lu.cfg.GenerateUniqueID()
3070 results.append("%s%s" % (new_id, val))
3074 def _GenerateDRBD8Branch(lu, primary, secondary, size, names, iv_name,
3076 """Generate a drbd8 device complete with its children.
3079 port = lu.cfg.AllocatePort()
3080 vgname = lu.cfg.GetVGName()
3081 shared_secret = lu.cfg.GenerateDRBDSecret()
3082 dev_data = objects.Disk(dev_type=constants.LD_LV, size=size,
3083 logical_id=(vgname, names[0]))
3084 dev_meta = objects.Disk(dev_type=constants.LD_LV, size=128,
3085 logical_id=(vgname, names[1]))
3086 drbd_dev = objects.Disk(dev_type=constants.LD_DRBD8, size=size,
3087 logical_id=(primary, secondary, port,
3090 children=[dev_data, dev_meta],
3095 def _GenerateDiskTemplate(lu, template_name,
3096 instance_name, primary_node,
3097 secondary_nodes, disk_sz, swap_sz,
3098 file_storage_dir, file_driver):
3099 """Generate the entire disk layout for a given template type.
3102 #TODO: compute space requirements
3104 vgname = lu.cfg.GetVGName()
3105 if template_name == constants.DT_DISKLESS:
3107 elif template_name == constants.DT_PLAIN:
3108 if len(secondary_nodes) != 0:
3109 raise errors.ProgrammerError("Wrong template configuration")
3111 names = _GenerateUniqueNames(lu, [".sda", ".sdb"])
3112 sda_dev = objects.Disk(dev_type=constants.LD_LV, size=disk_sz,
3113 logical_id=(vgname, names[0]),
3115 sdb_dev = objects.Disk(dev_type=constants.LD_LV, size=swap_sz,
3116 logical_id=(vgname, names[1]),
3118 disks = [sda_dev, sdb_dev]
3119 elif template_name == constants.DT_DRBD8:
3120 if len(secondary_nodes) != 1:
3121 raise errors.ProgrammerError("Wrong template configuration")
3122 remote_node = secondary_nodes[0]
3123 (minor_pa, minor_pb,
3124 minor_sa, minor_sb) = lu.cfg.AllocateDRBDMinor(
3125 [primary_node, primary_node, remote_node, remote_node], instance_name)
3127 names = _GenerateUniqueNames(lu, [".sda_data", ".sda_meta",
3128 ".sdb_data", ".sdb_meta"])
3129 drbd_sda_dev = _GenerateDRBD8Branch(lu, primary_node, remote_node,
3130 disk_sz, names[0:2], "sda",
3132 drbd_sdb_dev = _GenerateDRBD8Branch(lu, primary_node, remote_node,
3133 swap_sz, names[2:4], "sdb",
3135 disks = [drbd_sda_dev, drbd_sdb_dev]
3136 elif template_name == constants.DT_FILE:
3137 if len(secondary_nodes) != 0:
3138 raise errors.ProgrammerError("Wrong template configuration")
3140 file_sda_dev = objects.Disk(dev_type=constants.LD_FILE, size=disk_sz,
3141 iv_name="sda", logical_id=(file_driver,
3142 "%s/sda" % file_storage_dir))
3143 file_sdb_dev = objects.Disk(dev_type=constants.LD_FILE, size=swap_sz,
3144 iv_name="sdb", logical_id=(file_driver,
3145 "%s/sdb" % file_storage_dir))
3146 disks = [file_sda_dev, file_sdb_dev]
3148 raise errors.ProgrammerError("Invalid disk template '%s'" % template_name)
3152 def _GetInstanceInfoText(instance):
3153 """Compute that text that should be added to the disk's metadata.
3156 return "originstname+%s" % instance.name
3159 def _CreateDisks(lu, instance):
3160 """Create all disks for an instance.
3162 This abstracts away some work from AddInstance.
3165 instance: the instance object
3168 True or False showing the success of the creation process
3171 info = _GetInstanceInfoText(instance)
3173 if instance.disk_template == constants.DT_FILE:
3174 file_storage_dir = os.path.dirname(instance.disks[0].logical_id[1])
3175 result = lu.rpc.call_file_storage_dir_create(instance.primary_node,
3179 logging.error("Could not connect to node '%s'", instance.primary_node)
3183 logging.error("Failed to create directory '%s'", file_storage_dir)
3186 for device in instance.disks:
3187 logging.info("Creating volume %s for instance %s",
3188 device.iv_name, instance.name)
3190 for secondary_node in instance.secondary_nodes:
3191 if not _CreateBlockDevOnSecondary(lu, secondary_node, instance,
3192 device, False, info):
3193 logging.error("Failed to create volume %s (%s) on secondary node %s!",
3194 device.iv_name, device, secondary_node)
3197 if not _CreateBlockDevOnPrimary(lu, instance.primary_node,
3198 instance, device, info):
3199 logging.error("Failed to create volume %s on primary!", device.iv_name)
3205 def _RemoveDisks(lu, instance):
3206 """Remove all disks for an instance.
3208 This abstracts away some work from `AddInstance()` and
3209 `RemoveInstance()`. Note that in case some of the devices couldn't
3210 be removed, the removal will continue with the other ones (compare
3211 with `_CreateDisks()`).
3214 instance: the instance object
3217 True or False showing the success of the removal proces
3220 logging.info("Removing block devices for instance %s", instance.name)
3223 for device in instance.disks:
3224 for node, disk in device.ComputeNodeTree(instance.primary_node):
3225 lu.cfg.SetDiskID(disk, node)
3226 if not lu.rpc.call_blockdev_remove(node, disk):
3227 lu.proc.LogWarning("Could not remove block device %s on node %s,"
3228 " continuing anyway", device.iv_name, node)
3231 if instance.disk_template == constants.DT_FILE:
3232 file_storage_dir = os.path.dirname(instance.disks[0].logical_id[1])
3233 if not lu.rpc.call_file_storage_dir_remove(instance.primary_node,
3235 logging.error("Could not remove directory '%s'", file_storage_dir)
3241 def _ComputeDiskSize(disk_template, disk_size, swap_size):
3242 """Compute disk size requirements in the volume group
3244 This is currently hard-coded for the two-drive layout.
3247 # Required free disk space as a function of disk and swap space
3249 constants.DT_DISKLESS: None,
3250 constants.DT_PLAIN: disk_size + swap_size,
3251 # 256 MB are added for drbd metadata, 128MB for each drbd device
3252 constants.DT_DRBD8: disk_size + swap_size + 256,
3253 constants.DT_FILE: None,
3256 if disk_template not in req_size_dict:
3257 raise errors.ProgrammerError("Disk template '%s' size requirement"
3258 " is unknown" % disk_template)
3260 return req_size_dict[disk_template]
3263 def _CheckHVParams(lu, nodenames, hvname, hvparams):
3264 """Hypervisor parameter validation.
3266 This function abstract the hypervisor parameter validation to be
3267 used in both instance create and instance modify.
3269 @type lu: L{LogicalUnit}
3270 @param lu: the logical unit for which we check
3271 @type nodenames: list
3272 @param nodenames: the list of nodes on which we should check
3273 @type hvname: string
3274 @param hvname: the name of the hypervisor we should use
3275 @type hvparams: dict
3276 @param hvparams: the parameters which we need to check
3277 @raise errors.OpPrereqError: if the parameters are not valid
3280 hvinfo = lu.rpc.call_hypervisor_validate_params(nodenames,
3283 for node in nodenames:
3284 info = hvinfo.get(node, None)
3285 if not info or not isinstance(info, (tuple, list)):
3286 raise errors.OpPrereqError("Cannot get current information"
3287 " from node '%s' (%s)" % (node, info))
3289 raise errors.OpPrereqError("Hypervisor parameter validation failed:"
3293 class LUCreateInstance(LogicalUnit):
3294 """Create an instance.
3297 HPATH = "instance-add"
3298 HTYPE = constants.HTYPE_INSTANCE
3299 _OP_REQP = ["instance_name", "disk_size",
3300 "disk_template", "swap_size", "mode", "start",
3301 "wait_for_sync", "ip_check", "mac",
3302 "hvparams", "beparams"]
3305 def _ExpandNode(self, node):
3306 """Expands and checks one node name.
3309 node_full = self.cfg.ExpandNodeName(node)
3310 if node_full is None:
3311 raise errors.OpPrereqError("Unknown node %s" % node)
3314 def ExpandNames(self):
3315 """ExpandNames for CreateInstance.
3317 Figure out the right locks for instance creation.
3320 self.needed_locks = {}
3322 # set optional parameters to none if they don't exist
3323 for attr in ["pnode", "snode", "iallocator", "hypervisor"]:
3324 if not hasattr(self.op, attr):
3325 setattr(self.op, attr, None)
3327 # cheap checks, mostly valid constants given
3329 # verify creation mode
3330 if self.op.mode not in (constants.INSTANCE_CREATE,
3331 constants.INSTANCE_IMPORT):
3332 raise errors.OpPrereqError("Invalid instance creation mode '%s'" %
3335 # disk template and mirror node verification
3336 if self.op.disk_template not in constants.DISK_TEMPLATES:
3337 raise errors.OpPrereqError("Invalid disk template name")
3339 if self.op.hypervisor is None:
3340 self.op.hypervisor = self.cfg.GetHypervisorType()
3342 cluster = self.cfg.GetClusterInfo()
3343 enabled_hvs = cluster.enabled_hypervisors
3344 if self.op.hypervisor not in enabled_hvs:
3345 raise errors.OpPrereqError("Selected hypervisor (%s) not enabled in the"
3346 " cluster (%s)" % (self.op.hypervisor,
3347 ",".join(enabled_hvs)))
3349 # check hypervisor parameter syntax (locally)
3351 filled_hvp = cluster.FillDict(cluster.hvparams[self.op.hypervisor],
3353 hv_type = hypervisor.GetHypervisor(self.op.hypervisor)
3354 hv_type.CheckParameterSyntax(filled_hvp)
3356 # fill and remember the beparams dict
3357 self.be_full = cluster.FillDict(cluster.beparams[constants.BEGR_DEFAULT],
3360 #### instance parameters check
3362 # instance name verification
3363 hostname1 = utils.HostInfo(self.op.instance_name)
3364 self.op.instance_name = instance_name = hostname1.name
3366 # this is just a preventive check, but someone might still add this
3367 # instance in the meantime, and creation will fail at lock-add time
3368 if instance_name in self.cfg.GetInstanceList():
3369 raise errors.OpPrereqError("Instance '%s' is already in the cluster" %
3372 self.add_locks[locking.LEVEL_INSTANCE] = instance_name
3374 # ip validity checks
3375 ip = getattr(self.op, "ip", None)
3376 if ip is None or ip.lower() == "none":
3378 elif ip.lower() == constants.VALUE_AUTO:
3379 inst_ip = hostname1.ip
3381 if not utils.IsValidIP(ip):
3382 raise errors.OpPrereqError("given IP address '%s' doesn't look"
3383 " like a valid IP" % ip)
3385 self.inst_ip = self.op.ip = inst_ip
3386 # used in CheckPrereq for ip ping check
3387 self.check_ip = hostname1.ip
3389 # MAC address verification
3390 if self.op.mac not in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
3391 if not utils.IsValidMac(self.op.mac.lower()):
3392 raise errors.OpPrereqError("invalid MAC address specified: %s" %
3395 # file storage checks
3396 if (self.op.file_driver and
3397 not self.op.file_driver in constants.FILE_DRIVER):
3398 raise errors.OpPrereqError("Invalid file driver name '%s'" %
3399 self.op.file_driver)
3401 if self.op.file_storage_dir and os.path.isabs(self.op.file_storage_dir):
3402 raise errors.OpPrereqError("File storage directory path not absolute")
3404 ### Node/iallocator related checks
3405 if [self.op.iallocator, self.op.pnode].count(None) != 1:
3406 raise errors.OpPrereqError("One and only one of iallocator and primary"
3407 " node must be given")
3409 if self.op.iallocator:
3410 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
3412 self.op.pnode = self._ExpandNode(self.op.pnode)
3413 nodelist = [self.op.pnode]
3414 if self.op.snode is not None:
3415 self.op.snode = self._ExpandNode(self.op.snode)
3416 nodelist.append(self.op.snode)
3417 self.needed_locks[locking.LEVEL_NODE] = nodelist
3419 # in case of import lock the source node too
3420 if self.op.mode == constants.INSTANCE_IMPORT:
3421 src_node = getattr(self.op, "src_node", None)
3422 src_path = getattr(self.op, "src_path", None)
3424 if src_node is None or src_path is None:
3425 raise errors.OpPrereqError("Importing an instance requires source"
3426 " node and path options")
3428 if not os.path.isabs(src_path):
3429 raise errors.OpPrereqError("The source path must be absolute")
3431 self.op.src_node = src_node = self._ExpandNode(src_node)
3432 if self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET:
3433 self.needed_locks[locking.LEVEL_NODE].append(src_node)
3435 else: # INSTANCE_CREATE
3436 if getattr(self.op, "os_type", None) is None:
3437 raise errors.OpPrereqError("No guest OS specified")
3439 def _RunAllocator(self):
3440 """Run the allocator based on input opcode.
3443 disks = [{"size": self.op.disk_size, "mode": "w"},
3444 {"size": self.op.swap_size, "mode": "w"}]
3445 nics = [{"mac": self.op.mac, "ip": getattr(self.op, "ip", None),
3446 "bridge": self.op.bridge}]
3447 ial = IAllocator(self,
3448 mode=constants.IALLOCATOR_MODE_ALLOC,
3449 name=self.op.instance_name,
3450 disk_template=self.op.disk_template,
3453 vcpus=self.be_full[constants.BE_VCPUS],
3454 mem_size=self.be_full[constants.BE_MEMORY],
3459 ial.Run(self.op.iallocator)
3462 raise errors.OpPrereqError("Can't compute nodes using"
3463 " iallocator '%s': %s" % (self.op.iallocator,
3465 if len(ial.nodes) != ial.required_nodes:
3466 raise errors.OpPrereqError("iallocator '%s' returned invalid number"
3467 " of nodes (%s), required %s" %
3468 (self.op.iallocator, len(ial.nodes),
3469 ial.required_nodes))
3470 self.op.pnode = ial.nodes[0]
3471 self.LogInfo("Selected nodes for instance %s via iallocator %s: %s",
3472 self.op.instance_name, self.op.iallocator,
3473 ", ".join(ial.nodes))
3474 if ial.required_nodes == 2:
3475 self.op.snode = ial.nodes[1]
3477 def BuildHooksEnv(self):
3480 This runs on master, primary and secondary nodes of the instance.
3484 "INSTANCE_DISK_TEMPLATE": self.op.disk_template,
3485 "INSTANCE_DISK_SIZE": self.op.disk_size,
3486 "INSTANCE_SWAP_SIZE": self.op.swap_size,
3487 "INSTANCE_ADD_MODE": self.op.mode,
3489 if self.op.mode == constants.INSTANCE_IMPORT:
3490 env["INSTANCE_SRC_NODE"] = self.op.src_node
3491 env["INSTANCE_SRC_PATH"] = self.op.src_path
3492 env["INSTANCE_SRC_IMAGES"] = self.src_images
3494 env.update(_BuildInstanceHookEnv(name=self.op.instance_name,
3495 primary_node=self.op.pnode,
3496 secondary_nodes=self.secondaries,
3497 status=self.instance_status,
3498 os_type=self.op.os_type,
3499 memory=self.be_full[constants.BE_MEMORY],
3500 vcpus=self.be_full[constants.BE_VCPUS],
3501 nics=[(self.inst_ip, self.op.bridge, self.op.mac)],
3504 nl = ([self.cfg.GetMasterNode(), self.op.pnode] +
3509 def CheckPrereq(self):
3510 """Check prerequisites.
3513 if (not self.cfg.GetVGName() and
3514 self.op.disk_template not in constants.DTS_NOT_LVM):
3515 raise errors.OpPrereqError("Cluster does not support lvm-based"
3519 if self.op.mode == constants.INSTANCE_IMPORT:
3520 src_node = self.op.src_node
3521 src_path = self.op.src_path
3523 export_info = self.rpc.call_export_info(src_node, src_path)
3526 raise errors.OpPrereqError("No export found in dir %s" % src_path)
3528 if not export_info.has_section(constants.INISECT_EXP):
3529 raise errors.ProgrammerError("Corrupted export config")
3531 ei_version = export_info.get(constants.INISECT_EXP, 'version')
3532 if (int(ei_version) != constants.EXPORT_VERSION):
3533 raise errors.OpPrereqError("Wrong export version %s (wanted %d)" %
3534 (ei_version, constants.EXPORT_VERSION))
3536 # Check that the new instance doesn't have less disks than the export
3537 # TODO: substitute "2" with the actual number of disks requested
3539 export_disks = export_info.getint(constants.INISECT_INS, 'disk_count')
3540 if instance_disks < export_disks:
3541 raise errors.OpPrereqError("Not enough disks to import."
3542 " (instance: %d, export: %d)" %
3545 self.op.os_type = export_info.get(constants.INISECT_EXP, 'os')
3547 for idx in range(export_disks):
3548 option = 'disk%d_dump' % idx
3549 if export_info.has_option(constants.INISECT_INS, option):
3550 # FIXME: are the old os-es, disk sizes, etc. useful?
3551 export_name = export_info.get(constants.INISECT_INS, option)
3552 image = os.path.join(src_path, export_name)
3553 disk_images.append(image)
3555 disk_images.append(False)
3557 self.src_images = disk_images
3559 if self.op.mac == constants.VALUE_AUTO:
3560 old_name = export_info.get(constants.INISECT_INS, 'name')
3561 if self.op.instance_name == old_name:
3562 # FIXME: adjust every nic, when we'll be able to create instances
3563 # with more than one
3564 if int(export_info.get(constants.INISECT_INS, 'nic_count')) >= 1:
3565 self.op.mac = export_info.get(constants.INISECT_INS, 'nic_0_mac')
3567 # ip ping checks (we use the same ip that was resolved in ExpandNames)
3569 if self.op.start and not self.op.ip_check:
3570 raise errors.OpPrereqError("Cannot ignore IP address conflicts when"
3571 " adding an instance in start mode")
3573 if self.op.ip_check:
3574 if utils.TcpPing(self.check_ip, constants.DEFAULT_NODED_PORT):
3575 raise errors.OpPrereqError("IP %s of instance %s already in use" %
3576 (self.check_ip, self.op.instance_name))
3578 # bridge verification
3579 bridge = getattr(self.op, "bridge", None)
3581 self.op.bridge = self.cfg.GetDefBridge()
3583 self.op.bridge = bridge
3587 if self.op.iallocator is not None:
3588 self._RunAllocator()
3590 #### node related checks
3592 # check primary node
3593 self.pnode = pnode = self.cfg.GetNodeInfo(self.op.pnode)
3594 assert self.pnode is not None, \
3595 "Cannot retrieve locked node %s" % self.op.pnode
3596 self.secondaries = []
3598 # mirror node verification
3599 if self.op.disk_template in constants.DTS_NET_MIRROR:
3600 if self.op.snode is None:
3601 raise errors.OpPrereqError("The networked disk templates need"
3603 if self.op.snode == pnode.name:
3604 raise errors.OpPrereqError("The secondary node cannot be"
3605 " the primary node.")
3606 self.secondaries.append(self.op.snode)
3608 nodenames = [pnode.name] + self.secondaries
3610 req_size = _ComputeDiskSize(self.op.disk_template,
3611 self.op.disk_size, self.op.swap_size)
3613 # Check lv size requirements
3614 if req_size is not None:
3615 nodeinfo = self.rpc.call_node_info(nodenames, self.cfg.GetVGName(),
3617 for node in nodenames:
3618 info = nodeinfo.get(node, None)
3620 raise errors.OpPrereqError("Cannot get current information"
3621 " from node '%s'" % node)
3622 vg_free = info.get('vg_free', None)
3623 if not isinstance(vg_free, int):
3624 raise errors.OpPrereqError("Can't compute free disk space on"
3626 if req_size > info['vg_free']:
3627 raise errors.OpPrereqError("Not enough disk space on target node %s."
3628 " %d MB available, %d MB required" %
3629 (node, info['vg_free'], req_size))
3631 _CheckHVParams(self, nodenames, self.op.hypervisor, self.op.hvparams)
3634 os_obj = self.rpc.call_os_get(pnode.name, self.op.os_type)
3636 raise errors.OpPrereqError("OS '%s' not in supported os list for"
3637 " primary node" % self.op.os_type)
3639 # bridge check on primary node
3640 if not self.rpc.call_bridges_exist(self.pnode.name, [self.op.bridge]):
3641 raise errors.OpPrereqError("target bridge '%s' does not exist on"
3642 " destination node '%s'" %
3643 (self.op.bridge, pnode.name))
3645 # memory check on primary node
3647 _CheckNodeFreeMemory(self, self.pnode.name,
3648 "creating instance %s" % self.op.instance_name,
3649 self.be_full[constants.BE_MEMORY],
3653 self.instance_status = 'up'
3655 self.instance_status = 'down'
3657 def Exec(self, feedback_fn):
3658 """Create and add the instance to the cluster.
3661 instance = self.op.instance_name
3662 pnode_name = self.pnode.name
3664 if self.op.mac in (constants.VALUE_AUTO, constants.VALUE_GENERATE):
3665 mac_address = self.cfg.GenerateMAC()
3667 mac_address = self.op.mac
3669 nic = objects.NIC(bridge=self.op.bridge, mac=mac_address)
3670 if self.inst_ip is not None:
3671 nic.ip = self.inst_ip
3673 ht_kind = self.op.hypervisor
3674 if ht_kind in constants.HTS_REQ_PORT:
3675 network_port = self.cfg.AllocatePort()
3679 ##if self.op.vnc_bind_address is None:
3680 ## self.op.vnc_bind_address = constants.VNC_DEFAULT_BIND_ADDRESS
3682 # this is needed because os.path.join does not accept None arguments
3683 if self.op.file_storage_dir is None:
3684 string_file_storage_dir = ""
3686 string_file_storage_dir = self.op.file_storage_dir
3688 # build the full file storage dir path
3689 file_storage_dir = os.path.normpath(os.path.join(
3690 self.cfg.GetFileStorageDir(),
3691 string_file_storage_dir, instance))
3694 disks = _GenerateDiskTemplate(self,
3695 self.op.disk_template,
3696 instance, pnode_name,
3697 self.secondaries, self.op.disk_size,
3700 self.op.file_driver)
3702 iobj = objects.Instance(name=instance, os=self.op.os_type,
3703 primary_node=pnode_name,
3704 nics=[nic], disks=disks,
3705 disk_template=self.op.disk_template,
3706 status=self.instance_status,
3707 network_port=network_port,
3708 beparams=self.op.beparams,
3709 hvparams=self.op.hvparams,
3710 hypervisor=self.op.hypervisor,
3713 feedback_fn("* creating instance disks...")
3714 if not _CreateDisks(self, iobj):
3715 _RemoveDisks(self, iobj)
3716 self.cfg.ReleaseDRBDMinors(instance)
3717 raise errors.OpExecError("Device creation failed, reverting...")
3719 feedback_fn("adding instance %s to cluster config" % instance)
3721 self.cfg.AddInstance(iobj)
3722 # Declare that we don't want to remove the instance lock anymore, as we've
3723 # added the instance to the config
3724 del self.remove_locks[locking.LEVEL_INSTANCE]
3725 # Remove the temp. assignements for the instance's drbds
3726 self.cfg.ReleaseDRBDMinors(instance)
3728 if self.op.wait_for_sync:
3729 disk_abort = not _WaitForSync(self, iobj)
3730 elif iobj.disk_template in constants.DTS_NET_MIRROR:
3731 # make sure the disks are not degraded (still sync-ing is ok)
3733 feedback_fn("* checking mirrors status")
3734 disk_abort = not _WaitForSync(self, iobj, oneshot=True)
3739 _RemoveDisks(self, iobj)
3740 self.cfg.RemoveInstance(iobj.name)
3741 # Make sure the instance lock gets removed
3742 self.remove_locks[locking.LEVEL_INSTANCE] = iobj.name
3743 raise errors.OpExecError("There are some degraded disks for"
3746 feedback_fn("creating os for instance %s on node %s" %
3747 (instance, pnode_name))
3749 if iobj.disk_template != constants.DT_DISKLESS:
3750 if self.op.mode == constants.INSTANCE_CREATE:
3751 feedback_fn("* running the instance OS create scripts...")
3752 if not self.rpc.call_instance_os_add(pnode_name, iobj):
3753 raise errors.OpExecError("could not add os for instance %s"
3755 (instance, pnode_name))
3757 elif self.op.mode == constants.INSTANCE_IMPORT:
3758 feedback_fn("* running the instance OS import scripts...")
3759 src_node = self.op.src_node
3760 src_images = self.src_images
3761 cluster_name = self.cfg.GetClusterName()
3762 import_result = self.rpc.call_instance_os_import(pnode_name, iobj,
3763 src_node, src_images,
3765 for idx, result in enumerate(import_result):
3767 self.LogWarning("Could not image %s for on instance %s, disk %d,"
3768 " on node %s" % (src_images[idx], instance, idx,
3771 # also checked in the prereq part
3772 raise errors.ProgrammerError("Unknown OS initialization mode '%s'"
3776 logging.info("Starting instance %s on node %s", instance, pnode_name)
3777 feedback_fn("* starting instance...")
3778 if not self.rpc.call_instance_start(pnode_name, iobj, None):
3779 raise errors.OpExecError("Could not start instance")
3782 class LUConnectConsole(NoHooksLU):
3783 """Connect to an instance's console.
3785 This is somewhat special in that it returns the command line that
3786 you need to run on the master node in order to connect to the
3790 _OP_REQP = ["instance_name"]
3793 def ExpandNames(self):
3794 self._ExpandAndLockInstance()
3796 def CheckPrereq(self):
3797 """Check prerequisites.
3799 This checks that the instance is in the cluster.
3802 self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3803 assert self.instance is not None, \
3804 "Cannot retrieve locked instance %s" % self.op.instance_name
3806 def Exec(self, feedback_fn):
3807 """Connect to the console of an instance
3810 instance = self.instance
3811 node = instance.primary_node
3813 node_insts = self.rpc.call_instance_list([node],
3814 [instance.hypervisor])[node]
3815 if node_insts is False:
3816 raise errors.OpExecError("Can't connect to node %s." % node)
3818 if instance.name not in node_insts:
3819 raise errors.OpExecError("Instance %s is not running." % instance.name)
3821 logging.debug("Connecting to console of %s on %s", instance.name, node)
3823 hyper = hypervisor.GetHypervisor(instance.hypervisor)
3824 console_cmd = hyper.GetShellCommandForConsole(instance)
3827 return self.ssh.BuildCmd(node, "root", console_cmd, batch=True, tty=True)
3830 class LUReplaceDisks(LogicalUnit):
3831 """Replace the disks of an instance.
3834 HPATH = "mirrors-replace"
3835 HTYPE = constants.HTYPE_INSTANCE
3836 _OP_REQP = ["instance_name", "mode", "disks"]
3839 def ExpandNames(self):
3840 self._ExpandAndLockInstance()
3842 if not hasattr(self.op, "remote_node"):
3843 self.op.remote_node = None
3845 ia_name = getattr(self.op, "iallocator", None)
3846 if ia_name is not None:
3847 if self.op.remote_node is not None:
3848 raise errors.OpPrereqError("Give either the iallocator or the new"
3849 " secondary, not both")
3850 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
3851 elif self.op.remote_node is not None:
3852 remote_node = self.cfg.ExpandNodeName(self.op.remote_node)
3853 if remote_node is None:
3854 raise errors.OpPrereqError("Node '%s' not known" %
3855 self.op.remote_node)
3856 self.op.remote_node = remote_node
3857 self.needed_locks[locking.LEVEL_NODE] = [remote_node]
3858 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_APPEND
3860 self.needed_locks[locking.LEVEL_NODE] = []
3861 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
3863 def DeclareLocks(self, level):
3864 # If we're not already locking all nodes in the set we have to declare the
3865 # instance's primary/secondary nodes.
3866 if (level == locking.LEVEL_NODE and
3867 self.needed_locks[locking.LEVEL_NODE] is not locking.ALL_SET):
3868 self._LockInstancesNodes()
3870 def _RunAllocator(self):
3871 """Compute a new secondary node using an IAllocator.
3874 ial = IAllocator(self,
3875 mode=constants.IALLOCATOR_MODE_RELOC,
3876 name=self.op.instance_name,
3877 relocate_from=[self.sec_node])
3879 ial.Run(self.op.iallocator)
3882 raise errors.OpPrereqError("Can't compute nodes using"
3883 " iallocator '%s': %s" % (self.op.iallocator,
3885 if len(ial.nodes) != ial.required_nodes:
3886 raise errors.OpPrereqError("iallocator '%s' returned invalid number"
3887 " of nodes (%s), required %s" %
3888 (len(ial.nodes), ial.required_nodes))
3889 self.op.remote_node = ial.nodes[0]
3890 self.LogInfo("Selected new secondary for the instance: %s",
3891 self.op.remote_node)
3893 def BuildHooksEnv(self):
3896 This runs on the master, the primary and all the secondaries.
3900 "MODE": self.op.mode,
3901 "NEW_SECONDARY": self.op.remote_node,
3902 "OLD_SECONDARY": self.instance.secondary_nodes[0],
3904 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
3906 self.cfg.GetMasterNode(),
3907 self.instance.primary_node,
3909 if self.op.remote_node is not None:
3910 nl.append(self.op.remote_node)
3913 def CheckPrereq(self):
3914 """Check prerequisites.
3916 This checks that the instance is in the cluster.
3919 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
3920 assert instance is not None, \
3921 "Cannot retrieve locked instance %s" % self.op.instance_name
3922 self.instance = instance
3924 if instance.disk_template not in constants.DTS_NET_MIRROR:
3925 raise errors.OpPrereqError("Instance's disk layout is not"
3926 " network mirrored.")
3928 if len(instance.secondary_nodes) != 1:
3929 raise errors.OpPrereqError("The instance has a strange layout,"
3930 " expected one secondary but found %d" %
3931 len(instance.secondary_nodes))
3933 self.sec_node = instance.secondary_nodes[0]
3935 ia_name = getattr(self.op, "iallocator", None)
3936 if ia_name is not None:
3937 self._RunAllocator()
3939 remote_node = self.op.remote_node
3940 if remote_node is not None:
3941 self.remote_node_info = self.cfg.GetNodeInfo(remote_node)
3942 assert self.remote_node_info is not None, \
3943 "Cannot retrieve locked node %s" % remote_node
3945 self.remote_node_info = None
3946 if remote_node == instance.primary_node:
3947 raise errors.OpPrereqError("The specified node is the primary node of"
3949 elif remote_node == self.sec_node:
3950 if self.op.mode == constants.REPLACE_DISK_SEC:
3951 # this is for DRBD8, where we can't execute the same mode of
3952 # replacement as for drbd7 (no different port allocated)
3953 raise errors.OpPrereqError("Same secondary given, cannot execute"
3955 if instance.disk_template == constants.DT_DRBD8:
3956 if (self.op.mode == constants.REPLACE_DISK_ALL and
3957 remote_node is not None):
3958 # switch to replace secondary mode
3959 self.op.mode = constants.REPLACE_DISK_SEC
3961 if self.op.mode == constants.REPLACE_DISK_ALL:
3962 raise errors.OpPrereqError("Template 'drbd' only allows primary or"
3963 " secondary disk replacement, not"
3965 elif self.op.mode == constants.REPLACE_DISK_PRI:
3966 if remote_node is not None:
3967 raise errors.OpPrereqError("Template 'drbd' does not allow changing"
3968 " the secondary while doing a primary"
3969 " node disk replacement")
3970 self.tgt_node = instance.primary_node
3971 self.oth_node = instance.secondary_nodes[0]
3972 elif self.op.mode == constants.REPLACE_DISK_SEC:
3973 self.new_node = remote_node # this can be None, in which case
3974 # we don't change the secondary
3975 self.tgt_node = instance.secondary_nodes[0]
3976 self.oth_node = instance.primary_node
3978 raise errors.ProgrammerError("Unhandled disk replace mode")
3980 for name in self.op.disks:
3981 if instance.FindDisk(name) is None:
3982 raise errors.OpPrereqError("Disk '%s' not found for instance '%s'" %
3983 (name, instance.name))
3985 def _ExecD8DiskOnly(self, feedback_fn):
3986 """Replace a disk on the primary or secondary for dbrd8.
3988 The algorithm for replace is quite complicated:
3989 - for each disk to be replaced:
3990 - create new LVs on the target node with unique names
3991 - detach old LVs from the drbd device
3992 - rename old LVs to name_replaced.<time_t>
3993 - rename new LVs to old LVs
3994 - attach the new LVs (with the old names now) to the drbd device
3995 - wait for sync across all devices
3996 - for each modified disk:
3997 - remove old LVs (which have the name name_replaces.<time_t>)
3999 Failures are not very well handled.
4003 warning, info = (self.proc.LogWarning, self.proc.LogInfo)
4004 instance = self.instance
4006 vgname = self.cfg.GetVGName()
4009 tgt_node = self.tgt_node
4010 oth_node = self.oth_node
4012 # Step: check device activation
4013 self.proc.LogStep(1, steps_total, "check device existence")
4014 info("checking volume groups")
4015 my_vg = cfg.GetVGName()
4016 results = self.rpc.call_vg_list([oth_node, tgt_node])
4018 raise errors.OpExecError("Can't list volume groups on the nodes")
4019 for node in oth_node, tgt_node:
4020 res = results.get(node, False)
4021 if not res or my_vg not in res:
4022 raise errors.OpExecError("Volume group '%s' not found on %s" %
4024 for dev in instance.disks:
4025 if not dev.iv_name in self.op.disks:
4027 for node in tgt_node, oth_node:
4028 info("checking %s on %s" % (dev.iv_name, node))
4029 cfg.SetDiskID(dev, node)
4030 if not self.rpc.call_blockdev_find(node, dev):
4031 raise errors.OpExecError("Can't find device %s on node %s" %
4032 (dev.iv_name, node))
4034 # Step: check other node consistency
4035 self.proc.LogStep(2, steps_total, "check peer consistency")
4036 for dev in instance.disks:
4037 if not dev.iv_name in self.op.disks:
4039 info("checking %s consistency on %s" % (dev.iv_name, oth_node))
4040 if not _CheckDiskConsistency(self, dev, oth_node,
4041 oth_node==instance.primary_node):
4042 raise errors.OpExecError("Peer node (%s) has degraded storage, unsafe"
4043 " to replace disks on this node (%s)" %
4044 (oth_node, tgt_node))
4046 # Step: create new storage
4047 self.proc.LogStep(3, steps_total, "allocate new storage")
4048 for dev in instance.disks:
4049 if not dev.iv_name in self.op.disks:
4052 cfg.SetDiskID(dev, tgt_node)
4053 lv_names = [".%s_%s" % (dev.iv_name, suf) for suf in ["data", "meta"]]
4054 names = _GenerateUniqueNames(self, lv_names)
4055 lv_data = objects.Disk(dev_type=constants.LD_LV, size=size,
4056 logical_id=(vgname, names[0]))
4057 lv_meta = objects.Disk(dev_type=constants.LD_LV, size=128,
4058 logical_id=(vgname, names[1]))
4059 new_lvs = [lv_data, lv_meta]
4060 old_lvs = dev.children
4061 iv_names[dev.iv_name] = (dev, old_lvs, new_lvs)
4062 info("creating new local storage on %s for %s" %
4063 (tgt_node, dev.iv_name))
4064 # since we *always* want to create this LV, we use the
4065 # _Create...OnPrimary (which forces the creation), even if we
4066 # are talking about the secondary node
4067 for new_lv in new_lvs:
4068 if not _CreateBlockDevOnPrimary(self, tgt_node, instance, new_lv,
4069 _GetInstanceInfoText(instance)):
4070 raise errors.OpExecError("Failed to create new LV named '%s' on"
4072 (new_lv.logical_id[1], tgt_node))
4074 # Step: for each lv, detach+rename*2+attach
4075 self.proc.LogStep(4, steps_total, "change drbd configuration")
4076 for dev, old_lvs, new_lvs in iv_names.itervalues():
4077 info("detaching %s drbd from local storage" % dev.iv_name)
4078 if not self.rpc.call_blockdev_removechildren(tgt_node, dev, old_lvs):
4079 raise errors.OpExecError("Can't detach drbd from local storage on node"
4080 " %s for device %s" % (tgt_node, dev.iv_name))
4082 #cfg.Update(instance)
4084 # ok, we created the new LVs, so now we know we have the needed
4085 # storage; as such, we proceed on the target node to rename
4086 # old_lv to _old, and new_lv to old_lv; note that we rename LVs
4087 # using the assumption that logical_id == physical_id (which in
4088 # turn is the unique_id on that node)
4090 # FIXME(iustin): use a better name for the replaced LVs
4091 temp_suffix = int(time.time())
4092 ren_fn = lambda d, suff: (d.physical_id[0],
4093 d.physical_id[1] + "_replaced-%s" % suff)
4094 # build the rename list based on what LVs exist on the node
4096 for to_ren in old_lvs:
4097 find_res = self.rpc.call_blockdev_find(tgt_node, to_ren)
4098 if find_res is not None: # device exists
4099 rlist.append((to_ren, ren_fn(to_ren, temp_suffix)))
4101 info("renaming the old LVs on the target node")
4102 if not self.rpc.call_blockdev_rename(tgt_node, rlist):
4103 raise errors.OpExecError("Can't rename old LVs on node %s" % tgt_node)
4104 # now we rename the new LVs to the old LVs
4105 info("renaming the new LVs on the target node")
4106 rlist = [(new, old.physical_id) for old, new in zip(old_lvs, new_lvs)]
4107 if not self.rpc.call_blockdev_rename(tgt_node, rlist):
4108 raise errors.OpExecError("Can't rename new LVs on node %s" % tgt_node)
4110 for old, new in zip(old_lvs, new_lvs):
4111 new.logical_id = old.logical_id
4112 cfg.SetDiskID(new, tgt_node)
4114 for disk in old_lvs:
4115 disk.logical_id = ren_fn(disk, temp_suffix)
4116 cfg.SetDiskID(disk, tgt_node)
4118 # now that the new lvs have the old name, we can add them to the device
4119 info("adding new mirror component on %s" % tgt_node)
4120 if not self.rpc.call_blockdev_addchildren(tgt_node, dev, new_lvs):
4121 for new_lv in new_lvs:
4122 if not self.rpc.call_blockdev_remove(tgt_node, new_lv):
4123 warning("Can't rollback device %s", hint="manually cleanup unused"
4125 raise errors.OpExecError("Can't add local storage to drbd")
4127 dev.children = new_lvs
4128 cfg.Update(instance)
4130 # Step: wait for sync
4132 # this can fail as the old devices are degraded and _WaitForSync
4133 # does a combined result over all disks, so we don't check its
4135 self.proc.LogStep(5, steps_total, "sync devices")
4136 _WaitForSync(self, instance, unlock=True)
4138 # so check manually all the devices
4139 for name, (dev, old_lvs, new_lvs) in iv_names.iteritems():
4140 cfg.SetDiskID(dev, instance.primary_node)
4141 is_degr = self.rpc.call_blockdev_find(instance.primary_node, dev)[5]
4143 raise errors.OpExecError("DRBD device %s is degraded!" % name)
4145 # Step: remove old storage
4146 self.proc.LogStep(6, steps_total, "removing old storage")
4147 for name, (dev, old_lvs, new_lvs) in iv_names.iteritems():
4148 info("remove logical volumes for %s" % name)
4150 cfg.SetDiskID(lv, tgt_node)
4151 if not self.rpc.call_blockdev_remove(tgt_node, lv):
4152 warning("Can't remove old LV", hint="manually remove unused LVs")
4155 def _ExecD8Secondary(self, feedback_fn):
4156 """Replace the secondary node for drbd8.
4158 The algorithm for replace is quite complicated:
4159 - for all disks of the instance:
4160 - create new LVs on the new node with same names
4161 - shutdown the drbd device on the old secondary
4162 - disconnect the drbd network on the primary
4163 - create the drbd device on the new secondary
4164 - network attach the drbd on the primary, using an artifice:
4165 the drbd code for Attach() will connect to the network if it
4166 finds a device which is connected to the good local disks but
4168 - wait for sync across all devices
4169 - remove all disks from the old secondary
4171 Failures are not very well handled.
4175 warning, info = (self.proc.LogWarning, self.proc.LogInfo)
4176 instance = self.instance
4178 vgname = self.cfg.GetVGName()
4181 old_node = self.tgt_node
4182 new_node = self.new_node
4183 pri_node = instance.primary_node
4185 # Step: check device activation
4186 self.proc.LogStep(1, steps_total, "check device existence")
4187 info("checking volume groups")
4188 my_vg = cfg.GetVGName()
4189 results = self.rpc.call_vg_list([pri_node, new_node])
4191 raise errors.OpExecError("Can't list volume groups on the nodes")
4192 for node in pri_node, new_node:
4193 res = results.get(node, False)
4194 if not res or my_vg not in res:
4195 raise errors.OpExecError("Volume group '%s' not found on %s" %
4197 for dev in instance.disks:
4198 if not dev.iv_name in self.op.disks:
4200 info("checking %s on %s" % (dev.iv_name, pri_node))
4201 cfg.SetDiskID(dev, pri_node)
4202 if not self.rpc.call_blockdev_find(pri_node, dev):
4203 raise errors.OpExecError("Can't find device %s on node %s" %
4204 (dev.iv_name, pri_node))
4206 # Step: check other node consistency
4207 self.proc.LogStep(2, steps_total, "check peer consistency")
4208 for dev in instance.disks:
4209 if not dev.iv_name in self.op.disks:
4211 info("checking %s consistency on %s" % (dev.iv_name, pri_node))
4212 if not _CheckDiskConsistency(self, dev, pri_node, True, ldisk=True):
4213 raise errors.OpExecError("Primary node (%s) has degraded storage,"
4214 " unsafe to replace the secondary" %
4217 # Step: create new storage
4218 self.proc.LogStep(3, steps_total, "allocate new storage")
4219 for dev in instance.disks:
4221 info("adding new local storage on %s for %s" % (new_node, dev.iv_name))
4222 # since we *always* want to create this LV, we use the
4223 # _Create...OnPrimary (which forces the creation), even if we
4224 # are talking about the secondary node
4225 for new_lv in dev.children:
4226 if not _CreateBlockDevOnPrimary(self, new_node, instance, new_lv,
4227 _GetInstanceInfoText(instance)):
4228 raise errors.OpExecError("Failed to create new LV named '%s' on"
4230 (new_lv.logical_id[1], new_node))
4233 # Step 4: dbrd minors and drbd setups changes
4234 # after this, we must manually remove the drbd minors on both the
4235 # error and the success paths
4236 minors = cfg.AllocateDRBDMinor([new_node for dev in instance.disks],
4238 logging.debug("Allocated minors %s" % (minors,))
4239 self.proc.LogStep(4, steps_total, "changing drbd configuration")
4240 for dev, new_minor in zip(instance.disks, minors):
4242 info("activating a new drbd on %s for %s" % (new_node, dev.iv_name))
4243 # create new devices on new_node
4244 if pri_node == dev.logical_id[0]:
4245 new_logical_id = (pri_node, new_node,
4246 dev.logical_id[2], dev.logical_id[3], new_minor,
4249 new_logical_id = (new_node, pri_node,
4250 dev.logical_id[2], new_minor, dev.logical_id[4],
4252 iv_names[dev.iv_name] = (dev, dev.children, new_logical_id)
4253 logging.debug("Allocated new_minor: %s, new_logical_id: %s", new_minor,
4255 new_drbd = objects.Disk(dev_type=constants.LD_DRBD8,
4256 logical_id=new_logical_id,
4257 children=dev.children)
4258 if not _CreateBlockDevOnSecondary(self, new_node, instance,
4260 _GetInstanceInfoText(instance)):
4261 self.cfg.ReleaseDRBDMinors(instance.name)
4262 raise errors.OpExecError("Failed to create new DRBD on"
4263 " node '%s'" % new_node)
4265 for dev in instance.disks:
4266 # we have new devices, shutdown the drbd on the old secondary
4267 info("shutting down drbd for %s on old node" % dev.iv_name)
4268 cfg.SetDiskID(dev, old_node)
4269 if not self.rpc.call_blockdev_shutdown(old_node, dev):
4270 warning("Failed to shutdown drbd for %s on old node" % dev.iv_name,
4271 hint="Please cleanup this device manually as soon as possible")
4273 info("detaching primary drbds from the network (=> standalone)")
4275 for dev in instance.disks:
4276 cfg.SetDiskID(dev, pri_node)
4277 # set the network part of the physical (unique in bdev terms) id
4278 # to None, meaning detach from network
4279 dev.physical_id = (None, None, None, None) + dev.physical_id[4:]
4280 # and 'find' the device, which will 'fix' it to match the
4282 if self.rpc.call_blockdev_find(pri_node, dev):
4285 warning("Failed to detach drbd %s from network, unusual case" %
4289 # no detaches succeeded (very unlikely)
4290 self.cfg.ReleaseDRBDMinors(instance.name)
4291 raise errors.OpExecError("Can't detach at least one DRBD from old node")
4293 # if we managed to detach at least one, we update all the disks of
4294 # the instance to point to the new secondary
4295 info("updating instance configuration")
4296 for dev, _, new_logical_id in iv_names.itervalues():
4297 dev.logical_id = new_logical_id
4298 cfg.SetDiskID(dev, pri_node)
4299 cfg.Update(instance)
4300 # we can remove now the temp minors as now the new values are
4301 # written to the config file (and therefore stable)
4302 self.cfg.ReleaseDRBDMinors(instance.name)
4304 # and now perform the drbd attach
4305 info("attaching primary drbds to new secondary (standalone => connected)")
4307 for dev in instance.disks:
4308 info("attaching primary drbd for %s to new secondary node" % dev.iv_name)
4309 # since the attach is smart, it's enough to 'find' the device,
4310 # it will automatically activate the network, if the physical_id
4312 cfg.SetDiskID(dev, pri_node)
4313 logging.debug("Disk to attach: %s", dev)
4314 if not self.rpc.call_blockdev_find(pri_node, dev):
4315 warning("can't attach drbd %s to new secondary!" % dev.iv_name,
4316 "please do a gnt-instance info to see the status of disks")
4318 # this can fail as the old devices are degraded and _WaitForSync
4319 # does a combined result over all disks, so we don't check its
4321 self.proc.LogStep(5, steps_total, "sync devices")
4322 _WaitForSync(self, instance, unlock=True)
4324 # so check manually all the devices
4325 for name, (dev, old_lvs, _) in iv_names.iteritems():
4326 cfg.SetDiskID(dev, pri_node)
4327 is_degr = self.rpc.call_blockdev_find(pri_node, dev)[5]
4329 raise errors.OpExecError("DRBD device %s is degraded!" % name)
4331 self.proc.LogStep(6, steps_total, "removing old storage")
4332 for name, (dev, old_lvs, _) in iv_names.iteritems():
4333 info("remove logical volumes for %s" % name)
4335 cfg.SetDiskID(lv, old_node)
4336 if not self.rpc.call_blockdev_remove(old_node, lv):
4337 warning("Can't remove LV on old secondary",
4338 hint="Cleanup stale volumes by hand")
4340 def Exec(self, feedback_fn):
4341 """Execute disk replacement.
4343 This dispatches the disk replacement to the appropriate handler.
4346 instance = self.instance
4348 # Activate the instance disks if we're replacing them on a down instance
4349 if instance.status == "down":
4350 _StartInstanceDisks(self, instance, True)
4352 if instance.disk_template == constants.DT_DRBD8:
4353 if self.op.remote_node is None:
4354 fn = self._ExecD8DiskOnly
4356 fn = self._ExecD8Secondary
4358 raise errors.ProgrammerError("Unhandled disk replacement case")
4360 ret = fn(feedback_fn)
4362 # Deactivate the instance disks if we're replacing them on a down instance
4363 if instance.status == "down":
4364 _SafeShutdownInstanceDisks(self, instance)
4369 class LUGrowDisk(LogicalUnit):
4370 """Grow a disk of an instance.
4374 HTYPE = constants.HTYPE_INSTANCE
4375 _OP_REQP = ["instance_name", "disk", "amount", "wait_for_sync"]
4378 def ExpandNames(self):
4379 self._ExpandAndLockInstance()
4380 self.needed_locks[locking.LEVEL_NODE] = []
4381 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
4383 def DeclareLocks(self, level):
4384 if level == locking.LEVEL_NODE:
4385 self._LockInstancesNodes()
4387 def BuildHooksEnv(self):
4390 This runs on the master, the primary and all the secondaries.
4394 "DISK": self.op.disk,
4395 "AMOUNT": self.op.amount,
4397 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
4399 self.cfg.GetMasterNode(),
4400 self.instance.primary_node,
4404 def CheckPrereq(self):
4405 """Check prerequisites.
4407 This checks that the instance is in the cluster.
4410 instance = self.cfg.GetInstanceInfo(self.op.instance_name)
4411 assert instance is not None, \
4412 "Cannot retrieve locked instance %s" % self.op.instance_name
4414 self.instance = instance
4416 if instance.disk_template not in (constants.DT_PLAIN, constants.DT_DRBD8):
4417 raise errors.OpPrereqError("Instance's disk layout does not support"
4420 if instance.FindDisk(self.op.disk) is None:
4421 raise errors.OpPrereqError("Disk '%s' not found for instance '%s'" %
4422 (self.op.disk, instance.name))
4424 nodenames = [instance.primary_node] + list(instance.secondary_nodes)
4425 nodeinfo = self.rpc.call_node_info(nodenames, self.cfg.GetVGName(),
4426 instance.hypervisor)
4427 for node in nodenames:
4428 info = nodeinfo.get(node, None)
4430 raise errors.OpPrereqError("Cannot get current information"
4431 " from node '%s'" % node)
4432 vg_free = info.get('vg_free', None)
4433 if not isinstance(vg_free, int):
4434 raise errors.OpPrereqError("Can't compute free disk space on"
4436 if self.op.amount > info['vg_free']:
4437 raise errors.OpPrereqError("Not enough disk space on target node %s:"
4438 " %d MiB available, %d MiB required" %
4439 (node, info['vg_free'], self.op.amount))
4441 def Exec(self, feedback_fn):
4442 """Execute disk grow.
4445 instance = self.instance
4446 disk = instance.FindDisk(self.op.disk)
4447 for node in (instance.secondary_nodes + (instance.primary_node,)):
4448 self.cfg.SetDiskID(disk, node)
4449 result = self.rpc.call_blockdev_grow(node, disk, self.op.amount)
4450 if (not result or not isinstance(result, (list, tuple)) or
4452 raise errors.OpExecError("grow request failed to node %s" % node)
4454 raise errors.OpExecError("grow request failed to node %s: %s" %
4456 disk.RecordGrow(self.op.amount)
4457 self.cfg.Update(instance)
4458 if self.op.wait_for_sync:
4459 disk_abort = not _WaitForSync(self, instance)
4461 self.proc.LogWarning("Warning: disk sync-ing has not returned a good"
4462 " status.\nPlease check the instance.")
4465 class LUQueryInstanceData(NoHooksLU):
4466 """Query runtime instance data.
4469 _OP_REQP = ["instances", "static"]
4472 def ExpandNames(self):
4473 self.needed_locks = {}
4474 self.share_locks = dict(((i, 1) for i in locking.LEVELS))
4476 if not isinstance(self.op.instances, list):
4477 raise errors.OpPrereqError("Invalid argument type 'instances'")
4479 if self.op.instances:
4480 self.wanted_names = []
4481 for name in self.op.instances:
4482 full_name = self.cfg.ExpandInstanceName(name)
4483 if full_name is None:
4484 raise errors.OpPrereqError("Instance '%s' not known" %
4485 self.op.instance_name)
4486 self.wanted_names.append(full_name)
4487 self.needed_locks[locking.LEVEL_INSTANCE] = self.wanted_names
4489 self.wanted_names = None
4490 self.needed_locks[locking.LEVEL_INSTANCE] = locking.ALL_SET
4492 self.needed_locks[locking.LEVEL_NODE] = []
4493 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
4495 def DeclareLocks(self, level):
4496 if level == locking.LEVEL_NODE:
4497 self._LockInstancesNodes()
4499 def CheckPrereq(self):
4500 """Check prerequisites.
4502 This only checks the optional instance list against the existing names.
4505 if self.wanted_names is None:
4506 self.wanted_names = self.acquired_locks[locking.LEVEL_INSTANCE]
4508 self.wanted_instances = [self.cfg.GetInstanceInfo(name) for name
4509 in self.wanted_names]
4512 def _ComputeDiskStatus(self, instance, snode, dev):
4513 """Compute block device status.
4516 static = self.op.static
4518 self.cfg.SetDiskID(dev, instance.primary_node)
4519 dev_pstatus = self.rpc.call_blockdev_find(instance.primary_node, dev)
4523 if dev.dev_type in constants.LDS_DRBD:
4524 # we change the snode then (otherwise we use the one passed in)
4525 if dev.logical_id[0] == instance.primary_node:
4526 snode = dev.logical_id[1]
4528 snode = dev.logical_id[0]
4530 if snode and not static:
4531 self.cfg.SetDiskID(dev, snode)
4532 dev_sstatus = self.rpc.call_blockdev_find(snode, dev)
4537 dev_children = [self._ComputeDiskStatus(instance, snode, child)
4538 for child in dev.children]
4543 "iv_name": dev.iv_name,
4544 "dev_type": dev.dev_type,
4545 "logical_id": dev.logical_id,
4546 "physical_id": dev.physical_id,
4547 "pstatus": dev_pstatus,
4548 "sstatus": dev_sstatus,
4549 "children": dev_children,
4554 def Exec(self, feedback_fn):
4555 """Gather and return data"""
4558 cluster = self.cfg.GetClusterInfo()
4560 for instance in self.wanted_instances:
4561 if not self.op.static:
4562 remote_info = self.rpc.call_instance_info(instance.primary_node,
4564 instance.hypervisor)
4565 if remote_info and "state" in remote_info:
4568 remote_state = "down"
4571 if instance.status == "down":
4572 config_state = "down"
4576 disks = [self._ComputeDiskStatus(instance, None, device)
4577 for device in instance.disks]
4580 "name": instance.name,
4581 "config_state": config_state,
4582 "run_state": remote_state,
4583 "pnode": instance.primary_node,
4584 "snodes": instance.secondary_nodes,
4586 "nics": [(nic.mac, nic.ip, nic.bridge) for nic in instance.nics],
4588 "hypervisor": instance.hypervisor,
4589 "network_port": instance.network_port,
4590 "hv_instance": instance.hvparams,
4591 "hv_actual": cluster.FillHV(instance),
4592 "be_instance": instance.beparams,
4593 "be_actual": cluster.FillBE(instance),
4596 result[instance.name] = idict
4601 class LUSetInstanceParams(LogicalUnit):
4602 """Modifies an instances's parameters.
4605 HPATH = "instance-modify"
4606 HTYPE = constants.HTYPE_INSTANCE
4607 _OP_REQP = ["instance_name", "hvparams"]
4610 def ExpandNames(self):
4611 self._ExpandAndLockInstance()
4612 self.needed_locks[locking.LEVEL_NODE] = []
4613 self.recalculate_locks[locking.LEVEL_NODE] = constants.LOCKS_REPLACE
4616 def DeclareLocks(self, level):
4617 if level == locking.LEVEL_NODE:
4618 self._LockInstancesNodes()
4620 def BuildHooksEnv(self):
4623 This runs on the master, primary and secondaries.
4627 if constants.BE_MEMORY in self.be_new:
4628 args['memory'] = self.be_new[constants.BE_MEMORY]
4629 if constants.BE_VCPUS in self.be_new:
4630 args['vcpus'] = self.be_new[constants.BE_VCPUS]
4631 if self.do_ip or self.do_bridge or self.mac:
4635 ip = self.instance.nics[0].ip
4637 bridge = self.bridge
4639 bridge = self.instance.nics[0].bridge
4643 mac = self.instance.nics[0].mac
4644 args['nics'] = [(ip, bridge, mac)]
4645 env = _BuildInstanceHookEnvByObject(self, self.instance, override=args)
4646 nl = [self.cfg.GetMasterNode(),
4647 self.instance.primary_node] + list(self.instance.secondary_nodes)
4650 def CheckPrereq(self):
4651 """Check prerequisites.
4653 This only checks the instance list against the existing names.
4656 # FIXME: all the parameters could be checked before, in ExpandNames, or in
4657 # a separate CheckArguments function, if we implement one, so the operation
4658 # can be aborted without waiting for any lock, should it have an error...
4659 self.ip = getattr(self.op, "ip", None)
4660 self.mac = getattr(self.op, "mac", None)
4661 self.bridge = getattr(self.op, "bridge", None)
4662 self.kernel_path = getattr(self.op, "kernel_path", None)
4663 self.initrd_path = getattr(self.op, "initrd_path", None)
4664 self.force = getattr(self.op, "force", None)
4665 all_parms = [self.ip, self.bridge, self.mac]
4666 if (all_parms.count(None) == len(all_parms) and
4667 not self.op.hvparams and
4668 not self.op.beparams):
4669 raise errors.OpPrereqError("No changes submitted")
4670 for item in (constants.BE_MEMORY, constants.BE_VCPUS):
4671 val = self.op.beparams.get(item, None)
4675 except ValueError, err:
4676 raise errors.OpPrereqError("Invalid %s size: %s" % (item, str(err)))
4677 self.op.beparams[item] = val
4678 if self.ip is not None:
4680 if self.ip.lower() == "none":
4683 if not utils.IsValidIP(self.ip):
4684 raise errors.OpPrereqError("Invalid IP address '%s'." % self.ip)
4687 self.do_bridge = (self.bridge is not None)
4688 if self.mac is not None:
4689 if self.cfg.IsMacInUse(self.mac):
4690 raise errors.OpPrereqError('MAC address %s already in use in cluster' %
4692 if not utils.IsValidMac(self.mac):
4693 raise errors.OpPrereqError('Invalid MAC address %s' % self.mac)
4695 # checking the new params on the primary/secondary nodes
4697 instance = self.instance = self.cfg.GetInstanceInfo(self.op.instance_name)
4698 assert self.instance is not None, \
4699 "Cannot retrieve locked instance %s" % self.op.instance_name
4700 pnode = self.instance.primary_node
4702 nodelist.extend(instance.secondary_nodes)
4704 # hvparams processing
4705 if self.op.hvparams:
4706 i_hvdict = copy.deepcopy(instance.hvparams)
4707 for key, val in self.op.hvparams.iteritems():
4715 cluster = self.cfg.GetClusterInfo()
4716 hv_new = cluster.FillDict(cluster.hvparams[instance.hypervisor],
4719 hypervisor.GetHypervisor(
4720 instance.hypervisor).CheckParameterSyntax(hv_new)
4721 _CheckHVParams(self, nodelist, instance.hypervisor, hv_new)
4722 self.hv_new = hv_new # the new actual values
4723 self.hv_inst = i_hvdict # the new dict (without defaults)
4725 self.hv_new = self.hv_inst = {}
4727 # beparams processing
4728 if self.op.beparams:
4729 i_bedict = copy.deepcopy(instance.beparams)
4730 for key, val in self.op.beparams.iteritems():
4738 cluster = self.cfg.GetClusterInfo()
4739 be_new = cluster.FillDict(cluster.beparams[constants.BEGR_DEFAULT],
4741 self.be_new = be_new # the new actual values
4742 self.be_inst = i_bedict # the new dict (without defaults)
4744 self.hv_new = self.hv_inst = {}
4748 if constants.BE_MEMORY in self.op.beparams and not self.force:
4749 mem_check_list = [pnode]
4750 if be_new[constants.BE_AUTO_BALANCE]:
4751 # either we changed auto_balance to yes or it was from before
4752 mem_check_list.extend(instance.secondary_nodes)
4753 instance_info = self.rpc.call_instance_info(pnode, instance.name,
4754 instance.hypervisor)
4755 nodeinfo = self.rpc.call_node_info(mem_check_list, self.cfg.GetVGName(),
4756 instance.hypervisor)
4758 if pnode not in nodeinfo or not isinstance(nodeinfo[pnode], dict):
4759 # Assume the primary node is unreachable and go ahead
4760 self.warn.append("Can't get info from primary node %s" % pnode)
4763 current_mem = instance_info['memory']
4765 # Assume instance not running
4766 # (there is a slight race condition here, but it's not very probable,
4767 # and we have no other way to check)
4769 miss_mem = (be_new[constants.BE_MEMORY] - current_mem -
4770 nodeinfo[pnode]['memory_free'])
4772 raise errors.OpPrereqError("This change will prevent the instance"
4773 " from starting, due to %d MB of memory"
4774 " missing on its primary node" % miss_mem)
4776 if be_new[constants.BE_AUTO_BALANCE]:
4777 for node in instance.secondary_nodes:
4778 if node not in nodeinfo or not isinstance(nodeinfo[node], dict):
4779 self.warn.append("Can't get info from secondary node %s" % node)
4780 elif be_new[constants.BE_MEMORY] > nodeinfo[node]['memory_free']:
4781 self.warn.append("Not enough memory to failover instance to"
4782 " secondary node %s" % node)
4786 def Exec(self, feedback_fn):
4787 """Modifies an instance.
4789 All parameters take effect only at the next restart of the instance.
4791 # Process here the warnings from CheckPrereq, as we don't have a
4792 # feedback_fn there.
4793 for warn in self.warn:
4794 feedback_fn("WARNING: %s" % warn)
4797 instance = self.instance
4799 instance.nics[0].ip = self.ip
4800 result.append(("ip", self.ip))
4802 instance.nics[0].bridge = self.bridge
4803 result.append(("bridge", self.bridge))
4805 instance.nics[0].mac = self.mac
4806 result.append(("mac", self.mac))
4807 if self.op.hvparams:
4808 instance.hvparams = self.hv_new
4809 for key, val in self.op.hvparams.iteritems():
4810 result.append(("hv/%s" % key, val))
4811 if self.op.beparams:
4812 instance.beparams = self.be_inst
4813 for key, val in self.op.beparams.iteritems():
4814 result.append(("be/%s" % key, val))
4816 self.cfg.Update(instance)
4821 class LUQueryExports(NoHooksLU):
4822 """Query the exports list
4825 _OP_REQP = ['nodes']
4828 def ExpandNames(self):
4829 self.needed_locks = {}
4830 self.share_locks[locking.LEVEL_NODE] = 1
4831 if not self.op.nodes:
4832 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
4834 self.needed_locks[locking.LEVEL_NODE] = \
4835 _GetWantedNodes(self, self.op.nodes)
4837 def CheckPrereq(self):
4838 """Check prerequisites.
4841 self.nodes = self.acquired_locks[locking.LEVEL_NODE]
4843 def Exec(self, feedback_fn):
4844 """Compute the list of all the exported system images.
4847 a dictionary with the structure node->(export-list)
4848 where export-list is a list of the instances exported on
4852 return self.rpc.call_export_list(self.nodes)
4855 class LUExportInstance(LogicalUnit):
4856 """Export an instance to an image in the cluster.
4859 HPATH = "instance-export"
4860 HTYPE = constants.HTYPE_INSTANCE
4861 _OP_REQP = ["instance_name", "target_node", "shutdown"]
4864 def ExpandNames(self):
4865 self._ExpandAndLockInstance()
4866 # FIXME: lock only instance primary and destination node
4868 # Sad but true, for now we have do lock all nodes, as we don't know where
4869 # the previous export might be, and and in this LU we search for it and
4870 # remove it from its current node. In the future we could fix this by:
4871 # - making a tasklet to search (share-lock all), then create the new one,
4872 # then one to remove, after
4873 # - removing the removal operation altoghether
4874 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
4876 def DeclareLocks(self, level):
4877 """Last minute lock declaration."""
4878 # All nodes are locked anyway, so nothing to do here.
4880 def BuildHooksEnv(self):
4883 This will run on the master, primary node and target node.
4887 "EXPORT_NODE": self.op.target_node,
4888 "EXPORT_DO_SHUTDOWN": self.op.shutdown,
4890 env.update(_BuildInstanceHookEnvByObject(self, self.instance))
4891 nl = [self.cfg.GetMasterNode(), self.instance.primary_node,
4892 self.op.target_node]
4895 def CheckPrereq(self):
4896 """Check prerequisites.
4898 This checks that the instance and node names are valid.
4901 instance_name = self.op.instance_name
4902 self.instance = self.cfg.GetInstanceInfo(instance_name)
4903 assert self.instance is not None, \
4904 "Cannot retrieve locked instance %s" % self.op.instance_name
4906 self.dst_node = self.cfg.GetNodeInfo(
4907 self.cfg.ExpandNodeName(self.op.target_node))
4909 assert self.dst_node is not None, \
4910 "Cannot retrieve locked node %s" % self.op.target_node
4912 # instance disk type verification
4913 for disk in self.instance.disks:
4914 if disk.dev_type == constants.LD_FILE:
4915 raise errors.OpPrereqError("Export not supported for instances with"
4916 " file-based disks")
4918 def Exec(self, feedback_fn):
4919 """Export an instance to an image in the cluster.
4922 instance = self.instance
4923 dst_node = self.dst_node
4924 src_node = instance.primary_node
4925 if self.op.shutdown:
4926 # shutdown the instance, but not the disks
4927 if not self.rpc.call_instance_shutdown(src_node, instance):
4928 raise errors.OpExecError("Could not shutdown instance %s on node %s" %
4929 (instance.name, src_node))
4931 vgname = self.cfg.GetVGName()
4936 for disk in instance.disks:
4937 # new_dev_name will be a snapshot of an lvm leaf of the one we passed
4938 new_dev_name = self.rpc.call_blockdev_snapshot(src_node, disk)
4940 if not new_dev_name:
4941 self.LogWarning("Could not snapshot block device %s on node %s",
4942 disk.logical_id[1], src_node)
4943 snap_disks.append(False)
4945 new_dev = objects.Disk(dev_type=constants.LD_LV, size=disk.size,
4946 logical_id=(vgname, new_dev_name),
4947 physical_id=(vgname, new_dev_name),
4948 iv_name=disk.iv_name)
4949 snap_disks.append(new_dev)
4952 if self.op.shutdown and instance.status == "up":
4953 if not self.rpc.call_instance_start(src_node, instance, None):
4954 _ShutdownInstanceDisks(self, instance)
4955 raise errors.OpExecError("Could not start instance")
4957 # TODO: check for size
4959 cluster_name = self.cfg.GetClusterName()
4960 for idx, dev in enumerate(snap_disks):
4962 if not self.rpc.call_snapshot_export(src_node, dev, dst_node.name,
4963 instance, cluster_name, idx):
4964 self.LogWarning("Could not export block device %s from node %s to"
4965 " node %s", dev.logical_id[1], src_node,
4967 if not self.rpc.call_blockdev_remove(src_node, dev):
4968 self.LogWarning("Could not remove snapshot block device %s from node"
4969 " %s", dev.logical_id[1], src_node)
4971 if not self.rpc.call_finalize_export(dst_node.name, instance, snap_disks):
4972 self.LogWarning("Could not finalize export for instance %s on node %s",
4973 instance.name, dst_node.name)
4975 nodelist = self.cfg.GetNodeList()
4976 nodelist.remove(dst_node.name)
4978 # on one-node clusters nodelist will be empty after the removal
4979 # if we proceed the backup would be removed because OpQueryExports
4980 # substitutes an empty list with the full cluster node list.
4982 exportlist = self.rpc.call_export_list(nodelist)
4983 for node in exportlist:
4984 if instance.name in exportlist[node]:
4985 if not self.rpc.call_export_remove(node, instance.name):
4986 self.LogWarning("Could not remove older export for instance %s"
4987 " on node %s", instance.name, node)
4990 class LURemoveExport(NoHooksLU):
4991 """Remove exports related to the named instance.
4994 _OP_REQP = ["instance_name"]
4997 def ExpandNames(self):
4998 self.needed_locks = {}
4999 # We need all nodes to be locked in order for RemoveExport to work, but we
5000 # don't need to lock the instance itself, as nothing will happen to it (and
5001 # we can remove exports also for a removed instance)
5002 self.needed_locks[locking.LEVEL_NODE] = locking.ALL_SET
5004 def CheckPrereq(self):
5005 """Check prerequisites.
5009 def Exec(self, feedback_fn):
5010 """Remove any export.
5013 instance_name = self.cfg.ExpandInstanceName(self.op.instance_name)
5014 # If the instance was not found we'll try with the name that was passed in.
5015 # This will only work if it was an FQDN, though.
5017 if not instance_name:
5019 instance_name = self.op.instance_name
5021 exportlist = self.rpc.call_export_list(self.acquired_locks[
5022 locking.LEVEL_NODE])
5024 for node in exportlist:
5025 if instance_name in exportlist[node]:
5027 if not self.rpc.call_export_remove(node, instance_name):
5028 logging.error("Could not remove export for instance %s"
5029 " on node %s", instance_name, node)
5031 if fqdn_warn and not found:
5032 feedback_fn("Export not found. If trying to remove an export belonging"
5033 " to a deleted instance please use its Fully Qualified"
5037 class TagsLU(NoHooksLU):
5040 This is an abstract class which is the parent of all the other tags LUs.
5044 def ExpandNames(self):
5045 self.needed_locks = {}
5046 if self.op.kind == constants.TAG_NODE:
5047 name = self.cfg.ExpandNodeName(self.op.name)
5049 raise errors.OpPrereqError("Invalid node name (%s)" %
5052 self.needed_locks[locking.LEVEL_NODE] = name
5053 elif self.op.kind == constants.TAG_INSTANCE:
5054 name = self.cfg.ExpandInstanceName(self.op.name)
5056 raise errors.OpPrereqError("Invalid instance name (%s)" %
5059 self.needed_locks[locking.LEVEL_INSTANCE] = name
5061 def CheckPrereq(self):
5062 """Check prerequisites.
5065 if self.op.kind == constants.TAG_CLUSTER:
5066 self.target = self.cfg.GetClusterInfo()
5067 elif self.op.kind == constants.TAG_NODE:
5068 self.target = self.cfg.GetNodeInfo(self.op.name)
5069 elif self.op.kind == constants.TAG_INSTANCE:
5070 self.target = self.cfg.GetInstanceInfo(self.op.name)
5072 raise errors.OpPrereqError("Wrong tag type requested (%s)" %
5076 class LUGetTags(TagsLU):
5077 """Returns the tags of a given object.
5080 _OP_REQP = ["kind", "name"]
5083 def Exec(self, feedback_fn):
5084 """Returns the tag list.
5087 return list(self.target.GetTags())
5090 class LUSearchTags(NoHooksLU):
5091 """Searches the tags for a given pattern.
5094 _OP_REQP = ["pattern"]
5097 def ExpandNames(self):
5098 self.needed_locks = {}
5100 def CheckPrereq(self):
5101 """Check prerequisites.
5103 This checks the pattern passed for validity by compiling it.
5107 self.re = re.compile(self.op.pattern)
5108 except re.error, err:
5109 raise errors.OpPrereqError("Invalid search pattern '%s': %s" %
5110 (self.op.pattern, err))
5112 def Exec(self, feedback_fn):
5113 """Returns the tag list.
5117 tgts = [("/cluster", cfg.GetClusterInfo())]
5118 ilist = cfg.GetAllInstancesInfo().values()
5119 tgts.extend([("/instances/%s" % i.name, i) for i in ilist])
5120 nlist = cfg.GetAllNodesInfo().values()
5121 tgts.extend([("/nodes/%s" % n.name, n) for n in nlist])
5123 for path, target in tgts:
5124 for tag in target.GetTags():
5125 if self.re.search(tag):
5126 results.append((path, tag))
5130 class LUAddTags(TagsLU):
5131 """Sets a tag on a given object.
5134 _OP_REQP = ["kind", "name", "tags"]
5137 def CheckPrereq(self):
5138 """Check prerequisites.
5140 This checks the type and length of the tag name and value.
5143 TagsLU.CheckPrereq(self)
5144 for tag in self.op.tags:
5145 objects.TaggableObject.ValidateTag(tag)
5147 def Exec(self, feedback_fn):
5152 for tag in self.op.tags:
5153 self.target.AddTag(tag)
5154 except errors.TagError, err:
5155 raise errors.OpExecError("Error while setting tag: %s" % str(err))
5157 self.cfg.Update(self.target)
5158 except errors.ConfigurationError:
5159 raise errors.OpRetryError("There has been a modification to the"
5160 " config file and the operation has been"
5161 " aborted. Please retry.")
5164 class LUDelTags(TagsLU):
5165 """Delete a list of tags from a given object.
5168 _OP_REQP = ["kind", "name", "tags"]
5171 def CheckPrereq(self):
5172 """Check prerequisites.
5174 This checks that we have the given tag.
5177 TagsLU.CheckPrereq(self)
5178 for tag in self.op.tags:
5179 objects.TaggableObject.ValidateTag(tag)
5180 del_tags = frozenset(self.op.tags)
5181 cur_tags = self.target.GetTags()
5182 if not del_tags <= cur_tags:
5183 diff_tags = del_tags - cur_tags
5184 diff_names = ["'%s'" % tag for tag in diff_tags]
5186 raise errors.OpPrereqError("Tag(s) %s not found" %
5187 (",".join(diff_names)))
5189 def Exec(self, feedback_fn):
5190 """Remove the tag from the object.
5193 for tag in self.op.tags:
5194 self.target.RemoveTag(tag)
5196 self.cfg.Update(self.target)
5197 except errors.ConfigurationError:
5198 raise errors.OpRetryError("There has been a modification to the"
5199 " config file and the operation has been"
5200 " aborted. Please retry.")
5203 class LUTestDelay(NoHooksLU):
5204 """Sleep for a specified amount of time.
5206 This LU sleeps on the master and/or nodes for a specified amount of
5210 _OP_REQP = ["duration", "on_master", "on_nodes"]
5213 def ExpandNames(self):
5214 """Expand names and set required locks.
5216 This expands the node list, if any.
5219 self.needed_locks = {}
5220 if self.op.on_nodes:
5221 # _GetWantedNodes can be used here, but is not always appropriate to use
5222 # this way in ExpandNames. Check LogicalUnit.ExpandNames docstring for
5224 self.op.on_nodes = _GetWantedNodes(self, self.op.on_nodes)
5225 self.needed_locks[locking.LEVEL_NODE] = self.op.on_nodes
5227 def CheckPrereq(self):
5228 """Check prerequisites.
5232 def Exec(self, feedback_fn):
5233 """Do the actual sleep.
5236 if self.op.on_master:
5237 if not utils.TestDelay(self.op.duration):
5238 raise errors.OpExecError("Error during master delay test")
5239 if self.op.on_nodes:
5240 result = self.rpc.call_test_delay(self.op.on_nodes, self.op.duration)
5242 raise errors.OpExecError("Complete failure from rpc call")
5243 for node, node_result in result.items():
5245 raise errors.OpExecError("Failure during rpc call to node %s,"
5246 " result: %s" % (node, node_result))
5249 class IAllocator(object):
5250 """IAllocator framework.
5252 An IAllocator instance has three sets of attributes:
5253 - cfg that is needed to query the cluster
5254 - input data (all members of the _KEYS class attribute are required)
5255 - four buffer attributes (in|out_data|text), that represent the
5256 input (to the external script) in text and data structure format,
5257 and the output from it, again in two formats
5258 - the result variables from the script (success, info, nodes) for
5263 "mem_size", "disks", "disk_template",
5264 "os", "tags", "nics", "vcpus",
5270 def __init__(self, lu, mode, name, **kwargs):
5272 # init buffer variables
5273 self.in_text = self.out_text = self.in_data = self.out_data = None
5274 # init all input fields so that pylint is happy
5277 self.mem_size = self.disks = self.disk_template = None
5278 self.os = self.tags = self.nics = self.vcpus = None
5279 self.relocate_from = None
5281 self.required_nodes = None
5282 # init result fields
5283 self.success = self.info = self.nodes = None
5284 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
5285 keyset = self._ALLO_KEYS
5286 elif self.mode == constants.IALLOCATOR_MODE_RELOC:
5287 keyset = self._RELO_KEYS
5289 raise errors.ProgrammerError("Unknown mode '%s' passed to the"
5290 " IAllocator" % self.mode)
5292 if key not in keyset:
5293 raise errors.ProgrammerError("Invalid input parameter '%s' to"
5294 " IAllocator" % key)
5295 setattr(self, key, kwargs[key])
5297 if key not in kwargs:
5298 raise errors.ProgrammerError("Missing input parameter '%s' to"
5299 " IAllocator" % key)
5300 self._BuildInputData()
5302 def _ComputeClusterData(self):
5303 """Compute the generic allocator input data.
5305 This is the data that is independent of the actual operation.
5309 cluster_info = cfg.GetClusterInfo()
5313 "cluster_name": cfg.GetClusterName(),
5314 "cluster_tags": list(cluster_info.GetTags()),
5315 "enable_hypervisors": list(cluster_info.enabled_hypervisors),
5316 # we don't have job IDs
5320 cluster = self.cfg.GetClusterInfo()
5321 for iname in cfg.GetInstanceList():
5322 i_obj = cfg.GetInstanceInfo(iname)
5323 i_list.append((i_obj, cluster.FillBE(i_obj)))
5327 node_list = cfg.GetNodeList()
5328 # FIXME: here we have only one hypervisor information, but
5329 # instance can belong to different hypervisors
5330 node_data = self.lu.rpc.call_node_info(node_list, cfg.GetVGName(),
5331 cfg.GetHypervisorType())
5332 for nname in node_list:
5333 ninfo = cfg.GetNodeInfo(nname)
5334 if nname not in node_data or not isinstance(node_data[nname], dict):
5335 raise errors.OpExecError("Can't get data for node %s" % nname)
5336 remote_info = node_data[nname]
5337 for attr in ['memory_total', 'memory_free', 'memory_dom0',
5338 'vg_size', 'vg_free', 'cpu_total']:
5339 if attr not in remote_info:
5340 raise errors.OpExecError("Node '%s' didn't return attribute '%s'" %
5343 remote_info[attr] = int(remote_info[attr])
5344 except ValueError, err:
5345 raise errors.OpExecError("Node '%s' returned invalid value for '%s':"
5346 " %s" % (nname, attr, str(err)))
5347 # compute memory used by primary instances
5348 i_p_mem = i_p_up_mem = 0
5349 for iinfo, beinfo in i_list:
5350 if iinfo.primary_node == nname:
5351 i_p_mem += beinfo[constants.BE_MEMORY]
5352 if iinfo.status == "up":
5353 i_p_up_mem += beinfo[constants.BE_MEMORY]
5355 # compute memory used by instances
5357 "tags": list(ninfo.GetTags()),
5358 "total_memory": remote_info['memory_total'],
5359 "reserved_memory": remote_info['memory_dom0'],
5360 "free_memory": remote_info['memory_free'],
5361 "i_pri_memory": i_p_mem,
5362 "i_pri_up_memory": i_p_up_mem,
5363 "total_disk": remote_info['vg_size'],
5364 "free_disk": remote_info['vg_free'],
5365 "primary_ip": ninfo.primary_ip,
5366 "secondary_ip": ninfo.secondary_ip,
5367 "total_cpus": remote_info['cpu_total'],
5369 node_results[nname] = pnr
5370 data["nodes"] = node_results
5374 for iinfo, beinfo in i_list:
5375 nic_data = [{"mac": n.mac, "ip": n.ip, "bridge": n.bridge}
5376 for n in iinfo.nics]
5378 "tags": list(iinfo.GetTags()),
5379 "should_run": iinfo.status == "up",
5380 "vcpus": beinfo[constants.BE_VCPUS],
5381 "memory": beinfo[constants.BE_MEMORY],
5383 "nodes": [iinfo.primary_node] + list(iinfo.secondary_nodes),
5385 "disks": [{"size": dsk.size, "mode": "w"} for dsk in iinfo.disks],
5386 "disk_template": iinfo.disk_template,
5387 "hypervisor": iinfo.hypervisor,
5389 instance_data[iinfo.name] = pir
5391 data["instances"] = instance_data
5395 def _AddNewInstance(self):
5396 """Add new instance data to allocator structure.
5398 This in combination with _AllocatorGetClusterData will create the
5399 correct structure needed as input for the allocator.
5401 The checks for the completeness of the opcode must have already been
5406 if len(self.disks) != 2:
5407 raise errors.OpExecError("Only two-disk configurations supported")
5409 disk_space = _ComputeDiskSize(self.disk_template,
5410 self.disks[0]["size"], self.disks[1]["size"])
5412 if self.disk_template in constants.DTS_NET_MIRROR:
5413 self.required_nodes = 2
5415 self.required_nodes = 1
5419 "disk_template": self.disk_template,
5422 "vcpus": self.vcpus,
5423 "memory": self.mem_size,
5424 "disks": self.disks,
5425 "disk_space_total": disk_space,
5427 "required_nodes": self.required_nodes,
5429 data["request"] = request
5431 def _AddRelocateInstance(self):
5432 """Add relocate instance data to allocator structure.
5434 This in combination with _IAllocatorGetClusterData will create the
5435 correct structure needed as input for the allocator.
5437 The checks for the completeness of the opcode must have already been
5441 instance = self.lu.cfg.GetInstanceInfo(self.name)
5442 if instance is None:
5443 raise errors.ProgrammerError("Unknown instance '%s' passed to"
5444 " IAllocator" % self.name)
5446 if instance.disk_template not in constants.DTS_NET_MIRROR:
5447 raise errors.OpPrereqError("Can't relocate non-mirrored instances")
5449 if len(instance.secondary_nodes) != 1:
5450 raise errors.OpPrereqError("Instance has not exactly one secondary node")
5452 self.required_nodes = 1
5454 disk_space = _ComputeDiskSize(instance.disk_template,
5455 instance.disks[0].size,
5456 instance.disks[1].size)
5461 "disk_space_total": disk_space,
5462 "required_nodes": self.required_nodes,
5463 "relocate_from": self.relocate_from,
5465 self.in_data["request"] = request
5467 def _BuildInputData(self):
5468 """Build input data structures.
5471 self._ComputeClusterData()
5473 if self.mode == constants.IALLOCATOR_MODE_ALLOC:
5474 self._AddNewInstance()
5476 self._AddRelocateInstance()
5478 self.in_text = serializer.Dump(self.in_data)
5480 def Run(self, name, validate=True, call_fn=None):
5481 """Run an instance allocator and return the results.
5485 call_fn = self.lu.rpc.call_iallocator_runner
5488 result = call_fn(self.lu.cfg.GetMasterNode(), name, self.in_text)
5490 if not isinstance(result, (list, tuple)) or len(result) != 4:
5491 raise errors.OpExecError("Invalid result from master iallocator runner")
5493 rcode, stdout, stderr, fail = result
5495 if rcode == constants.IARUN_NOTFOUND:
5496 raise errors.OpExecError("Can't find allocator '%s'" % name)
5497 elif rcode == constants.IARUN_FAILURE:
5498 raise errors.OpExecError("Instance allocator call failed: %s,"
5499 " output: %s" % (fail, stdout+stderr))
5500 self.out_text = stdout
5502 self._ValidateResult()
5504 def _ValidateResult(self):
5505 """Process the allocator results.
5507 This will process and if successful save the result in
5508 self.out_data and the other parameters.
5512 rdict = serializer.Load(self.out_text)
5513 except Exception, err:
5514 raise errors.OpExecError("Can't parse iallocator results: %s" % str(err))
5516 if not isinstance(rdict, dict):
5517 raise errors.OpExecError("Can't parse iallocator results: not a dict")
5519 for key in "success", "info", "nodes":
5520 if key not in rdict:
5521 raise errors.OpExecError("Can't parse iallocator results:"
5522 " missing key '%s'" % key)
5523 setattr(self, key, rdict[key])
5525 if not isinstance(rdict["nodes"], list):
5526 raise errors.OpExecError("Can't parse iallocator results: 'nodes' key"
5528 self.out_data = rdict
5531 class LUTestAllocator(NoHooksLU):
5532 """Run allocator tests.
5534 This LU runs the allocator tests
5537 _OP_REQP = ["direction", "mode", "name"]
5539 def CheckPrereq(self):
5540 """Check prerequisites.
5542 This checks the opcode parameters depending on the director and mode test.
5545 if self.op.mode == constants.IALLOCATOR_MODE_ALLOC:
5546 for attr in ["name", "mem_size", "disks", "disk_template",
5547 "os", "tags", "nics", "vcpus"]:
5548 if not hasattr(self.op, attr):
5549 raise errors.OpPrereqError("Missing attribute '%s' on opcode input" %
5551 iname = self.cfg.ExpandInstanceName(self.op.name)
5552 if iname is not None:
5553 raise errors.OpPrereqError("Instance '%s' already in the cluster" %
5555 if not isinstance(self.op.nics, list):
5556 raise errors.OpPrereqError("Invalid parameter 'nics'")
5557 for row in self.op.nics:
5558 if (not isinstance(row, dict) or
5561 "bridge" not in row):
5562 raise errors.OpPrereqError("Invalid contents of the"
5563 " 'nics' parameter")
5564 if not isinstance(self.op.disks, list):
5565 raise errors.OpPrereqError("Invalid parameter 'disks'")
5566 if len(self.op.disks) != 2:
5567 raise errors.OpPrereqError("Only two-disk configurations supported")
5568 for row in self.op.disks:
5569 if (not isinstance(row, dict) or
5570 "size" not in row or
5571 not isinstance(row["size"], int) or
5572 "mode" not in row or
5573 row["mode"] not in ['r', 'w']):
5574 raise errors.OpPrereqError("Invalid contents of the"
5575 " 'disks' parameter")
5576 elif self.op.mode == constants.IALLOCATOR_MODE_RELOC:
5577 if not hasattr(self.op, "name"):
5578 raise errors.OpPrereqError("Missing attribute 'name' on opcode input")
5579 fname = self.cfg.ExpandInstanceName(self.op.name)
5581 raise errors.OpPrereqError("Instance '%s' not found for relocation" %
5583 self.op.name = fname
5584 self.relocate_from = self.cfg.GetInstanceInfo(fname).secondary_nodes
5586 raise errors.OpPrereqError("Invalid test allocator mode '%s'" %
5589 if self.op.direction == constants.IALLOCATOR_DIR_OUT:
5590 if not hasattr(self.op, "allocator") or self.op.allocator is None:
5591 raise errors.OpPrereqError("Missing allocator name")
5592 elif self.op.direction != constants.IALLOCATOR_DIR_IN:
5593 raise errors.OpPrereqError("Wrong allocator test '%s'" %
5596 def Exec(self, feedback_fn):
5597 """Run the allocator test.
5600 if self.op.mode == constants.IALLOCATOR_MODE_ALLOC:
5601 ial = IAllocator(self,
5604 mem_size=self.op.mem_size,
5605 disks=self.op.disks,
5606 disk_template=self.op.disk_template,
5610 vcpus=self.op.vcpus,
5613 ial = IAllocator(self,
5616 relocate_from=list(self.relocate_from),
5619 if self.op.direction == constants.IALLOCATOR_DIR_IN:
5620 result = ial.in_text
5622 ial.Run(self.op.allocator, validate=False)
5623 result = ial.out_text