4 # Copyright (C) 2006, 2007 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 """Inter-node RPC library.
26 # pylint: disable-msg=C0103,R0201,R0904
27 # C0103: Invalid name, since call_ are not valid
28 # R0201: Method could be a function, we keep all rpcs instance methods
29 # as not to change them back and forth between static/instance methods
30 # if they need to start using instance attributes
31 # R0904: Too many public methods
39 from ganeti import utils
40 from ganeti import objects
41 from ganeti import http
42 from ganeti import serializer
43 from ganeti import constants
44 from ganeti import errors
46 import ganeti.http.client
49 # Module level variable
54 """Initializes the module-global HTTP client manager.
56 Must be called before using any RPC function.
61 assert not _http_manager, "RPC module initialized more than once"
63 _http_manager = http.client.HttpClientManager()
67 """Stops the module-global HTTP client manager.
69 Must be called before quitting the program.
75 _http_manager.Shutdown()
79 class RpcResult(object):
82 This class holds an RPC result. It is needed since in multi-node
83 calls we can't raise an exception just because one one out of many
84 failed, and therefore we use this class to encapsulate the result.
86 @ivar data: the data payload, for successfull results, or None
88 @ivar failed: whether the operation failed at RPC level (not
89 application level on the remote node)
90 @ivar call: the name of the RPC call
91 @ivar node: the name of the node to which we made the call
92 @ivar offline: whether the operation failed because the node was
93 offline, as opposed to actual failure; offline=True will always
94 imply failed=True, in order to allow simpler checking if
95 the user doesn't care about the exact failure mode
98 def __init__(self, data=None, failed=False, offline=False,
99 call=None, node=None):
101 self.offline = offline
106 self.error = "Node is marked offline"
107 self.data = self.payload = None
110 self.data = self.payload = None
114 if isinstance(data, (tuple, list)) and len(data) == 2:
115 self.payload = data[1]
120 """If the result has failed, raise an OpExecError.
122 This is used so that LU code doesn't have to check for each
123 result, but instead can call this function.
127 raise errors.OpExecError("Call '%s' to node '%s' has failed: %s" %
128 (self.call, self.node, self.error))
130 def RemoteFailMsg(self):
131 """Check if the remote procedure failed.
133 This is valid only for RPC calls which return result of the form
134 (status, data | error_msg).
136 @return: empty string for succcess, otherwise an error message
140 """Helper to ensure we return a 'True' value for error."""
144 return "No error information"
147 return _EnsureErr(self.error)
148 if not isinstance(self.data, (tuple, list)):
149 return "Invalid result type (%s)" % type(self.data)
150 if len(self.data) != 2:
151 return "Invalid result length (%d), expected 2" % len(self.data)
153 return _EnsureErr(self.data[1])
160 This class, given a (remote) method name, a list of parameters and a
161 list of nodes, will contact (in parallel) all nodes, and return a
162 dict of results (key: node name, value: result).
164 One current bug is that generic failure is still signalled by
165 'False' result, which is not good. This overloading of values can
169 def __init__(self, procedure, body, port):
170 self.procedure = procedure
176 http.HttpSslParams(ssl_key_path=constants.SSL_CERT_FILE,
177 ssl_cert_path=constants.SSL_CERT_FILE)
179 def ConnectList(self, node_list, address_list=None):
180 """Add a list of nodes to the target nodes.
182 @type node_list: list
183 @param node_list: the list of node names to connect
184 @type address_list: list or None
185 @keyword address_list: either None or a list with node addresses,
186 which must have the same length as the node list
189 if address_list is None:
190 address_list = [None for _ in node_list]
192 assert len(node_list) == len(address_list), \
193 "Name and address lists should have the same length"
194 for node, address in zip(node_list, address_list):
195 self.ConnectNode(node, address)
197 def ConnectNode(self, name, address=None):
198 """Add a node to the target list.
201 @param name: the node name
203 @keyword address: the node address, if known
210 http.client.HttpClientRequest(address, self.port, http.HTTP_PUT,
211 "/%s" % self.procedure,
213 ssl_params=self._ssl_params,
214 ssl_verify_peer=True)
216 def GetResults(self):
217 """Call nodes and return results.
220 @return: List of RPC results
223 assert _http_manager, "RPC module not intialized"
225 _http_manager.ExecRequests(self.nc.values())
229 for name, req in self.nc.iteritems():
230 if req.success and req.resp_status_code == http.HTTP_OK:
231 results[name] = RpcResult(data=serializer.LoadJson(req.resp_body),
232 node=name, call=self.procedure)
235 # TODO: Better error reporting
241 logging.error("RPC error in %s from node %s: %s",
242 self.procedure, name, msg)
243 results[name] = RpcResult(data=msg, failed=True, node=name,
249 class RpcRunner(object):
250 """RPC runner class"""
252 def __init__(self, cfg):
253 """Initialized the rpc runner.
255 @type cfg: C{config.ConfigWriter}
256 @param cfg: the configuration object that will be used to get data
261 self.port = utils.GetNodeDaemonPort()
263 def _InstDict(self, instance):
264 """Convert the given instance to a dict.
266 This is done via the instance's ToDict() method and additionally
267 we fill the hvparams with the cluster defaults.
269 @type instance: L{objects.Instance}
270 @param instance: an Instance object
272 @return: the instance dict, with the hvparams filled with the
276 idict = instance.ToDict()
277 cluster = self._cfg.GetClusterInfo()
278 idict["hvparams"] = cluster.FillHV(instance)
279 idict["beparams"] = cluster.FillBE(instance)
282 def _ConnectList(self, client, node_list, call):
283 """Helper for computing node addresses.
285 @type client: L{Client}
286 @param client: a C{Client} instance
287 @type node_list: list
288 @param node_list: the node list we should connect
290 @param call: the name of the remote procedure call, for filling in
291 correctly any eventual offline nodes' results
294 all_nodes = self._cfg.GetAllNodesInfo()
298 for node in node_list:
299 if node in all_nodes:
300 if all_nodes[node].offline:
301 skip_dict[node] = RpcResult(node=node, offline=True, call=call)
303 val = all_nodes[node].primary_ip
306 addr_list.append(val)
307 name_list.append(node)
309 client.ConnectList(name_list, address_list=addr_list)
312 def _ConnectNode(self, client, node, call):
313 """Helper for computing one node's address.
315 @type client: L{Client}
316 @param client: a C{Client} instance
318 @param node: the node we should connect
320 @param call: the name of the remote procedure call, for filling in
321 correctly any eventual offline nodes' results
324 node_info = self._cfg.GetNodeInfo(node)
325 if node_info is not None:
326 if node_info.offline:
327 return RpcResult(node=node, offline=True, call=call)
328 addr = node_info.primary_ip
331 client.ConnectNode(node, address=addr)
333 def _MultiNodeCall(self, node_list, procedure, args):
334 """Helper for making a multi-node call
337 body = serializer.DumpJson(args, indent=False)
338 c = Client(procedure, body, self.port)
339 skip_dict = self._ConnectList(c, node_list, procedure)
340 skip_dict.update(c.GetResults())
344 def _StaticMultiNodeCall(cls, node_list, procedure, args,
346 """Helper for making a multi-node static call
349 body = serializer.DumpJson(args, indent=False)
350 c = Client(procedure, body, utils.GetNodeDaemonPort())
351 c.ConnectList(node_list, address_list=address_list)
352 return c.GetResults()
354 def _SingleNodeCall(self, node, procedure, args):
355 """Helper for making a single-node call
358 body = serializer.DumpJson(args, indent=False)
359 c = Client(procedure, body, self.port)
360 result = self._ConnectNode(c, node, procedure)
362 # we did connect, node is not offline
363 result = c.GetResults()[node]
367 def _StaticSingleNodeCall(cls, node, procedure, args):
368 """Helper for making a single-node static call
371 body = serializer.DumpJson(args, indent=False)
372 c = Client(procedure, body, utils.GetNodeDaemonPort())
374 return c.GetResults()[node]
378 """Compresses a string for transport over RPC.
380 Small amounts of data are not compressed.
385 @return: Encoded data to send
388 # Small amounts of data are not compressed
390 return (constants.RPC_ENCODING_NONE, data)
392 # Compress with zlib and encode in base64
393 return (constants.RPC_ENCODING_ZLIB_BASE64,
394 base64.b64encode(zlib.compress(data, 3)))
400 def call_volume_list(self, node_list, vg_name):
401 """Gets the logical volumes present in a given volume group.
403 This is a multi-node call.
406 return self._MultiNodeCall(node_list, "volume_list", [vg_name])
408 def call_vg_list(self, node_list):
409 """Gets the volume group list.
411 This is a multi-node call.
414 return self._MultiNodeCall(node_list, "vg_list", [])
416 def call_bridges_exist(self, node, bridges_list):
417 """Checks if a node has all the bridges given.
419 This method checks if all bridges given in the bridges_list are
420 present on the remote node, so that an instance that uses interfaces
421 on those bridges can be started.
423 This is a single-node call.
426 return self._SingleNodeCall(node, "bridges_exist", [bridges_list])
428 def call_instance_start(self, node, instance):
429 """Starts an instance.
431 This is a single-node call.
434 return self._SingleNodeCall(node, "instance_start",
435 [self._InstDict(instance)])
437 def call_instance_shutdown(self, node, instance):
438 """Stops an instance.
440 This is a single-node call.
443 return self._SingleNodeCall(node, "instance_shutdown",
444 [self._InstDict(instance)])
446 def call_migration_info(self, node, instance):
447 """Gather the information necessary to prepare an instance migration.
449 This is a single-node call.
452 @param node: the node on which the instance is currently running
453 @type instance: C{objects.Instance}
454 @param instance: the instance definition
457 return self._SingleNodeCall(node, "migration_info",
458 [self._InstDict(instance)])
460 def call_accept_instance(self, node, instance, info, target):
461 """Prepare a node to accept an instance.
463 This is a single-node call.
466 @param node: the target node for the migration
467 @type instance: C{objects.Instance}
468 @param instance: the instance definition
469 @type info: opaque/hypervisor specific (string/data)
470 @param info: result for the call_migration_info call
472 @param target: target hostname (usually ip address) (on the node itself)
475 return self._SingleNodeCall(node, "accept_instance",
476 [self._InstDict(instance), info, target])
478 def call_finalize_migration(self, node, instance, info, success):
479 """Finalize any target-node migration specific operation.
481 This is called both in case of a successful migration and in case of error
482 (in which case it should abort the migration).
484 This is a single-node call.
487 @param node: the target node for the migration
488 @type instance: C{objects.Instance}
489 @param instance: the instance definition
490 @type info: opaque/hypervisor specific (string/data)
491 @param info: result for the call_migration_info call
492 @type success: boolean
493 @param success: whether the migration was a success or a failure
496 return self._SingleNodeCall(node, "finalize_migration",
497 [self._InstDict(instance), info, success])
499 def call_instance_migrate(self, node, instance, target, live):
500 """Migrate an instance.
502 This is a single-node call.
505 @param node: the node on which the instance is currently running
506 @type instance: C{objects.Instance}
507 @param instance: the instance definition
509 @param target: the target node name
511 @param live: whether the migration should be done live or not (the
512 interpretation of this parameter is left to the hypervisor)
515 return self._SingleNodeCall(node, "instance_migrate",
516 [self._InstDict(instance), target, live])
518 def call_instance_reboot(self, node, instance, reboot_type):
519 """Reboots an instance.
521 This is a single-node call.
524 return self._SingleNodeCall(node, "instance_reboot",
525 [self._InstDict(instance), reboot_type])
527 def call_instance_os_add(self, node, inst, reinstall):
528 """Installs an OS on the given instance.
530 This is a single-node call.
533 return self._SingleNodeCall(node, "instance_os_add",
534 [self._InstDict(inst), reinstall])
536 def call_instance_run_rename(self, node, inst, old_name):
537 """Run the OS rename script for an instance.
539 This is a single-node call.
542 return self._SingleNodeCall(node, "instance_run_rename",
543 [self._InstDict(inst), old_name])
545 def call_instance_info(self, node, instance, hname):
546 """Returns information about a single instance.
548 This is a single-node call.
551 @param node: the list of nodes to query
552 @type instance: string
553 @param instance: the instance name
555 @param hname: the hypervisor type of the instance
558 return self._SingleNodeCall(node, "instance_info", [instance, hname])
560 def call_instance_migratable(self, node, instance):
561 """Checks whether the given instance can be migrated.
563 This is a single-node call.
565 @param node: the node to query
566 @type instance: L{objects.Instance}
567 @param instance: the instance to check
571 return self._SingleNodeCall(node, "instance_migratable",
572 [self._InstDict(instance)])
574 def call_all_instances_info(self, node_list, hypervisor_list):
575 """Returns information about all instances on the given nodes.
577 This is a multi-node call.
579 @type node_list: list
580 @param node_list: the list of nodes to query
581 @type hypervisor_list: list
582 @param hypervisor_list: the hypervisors to query for instances
585 return self._MultiNodeCall(node_list, "all_instances_info",
588 def call_instance_list(self, node_list, hypervisor_list):
589 """Returns the list of running instances on a given node.
591 This is a multi-node call.
593 @type node_list: list
594 @param node_list: the list of nodes to query
595 @type hypervisor_list: list
596 @param hypervisor_list: the hypervisors to query for instances
599 return self._MultiNodeCall(node_list, "instance_list", [hypervisor_list])
601 def call_node_tcp_ping(self, node, source, target, port, timeout,
603 """Do a TcpPing on the remote node
605 This is a single-node call.
608 return self._SingleNodeCall(node, "node_tcp_ping",
609 [source, target, port, timeout,
612 def call_node_has_ip_address(self, node, address):
613 """Checks if a node has the given IP address.
615 This is a single-node call.
618 return self._SingleNodeCall(node, "node_has_ip_address", [address])
620 def call_node_info(self, node_list, vg_name, hypervisor_type):
621 """Return node information.
623 This will return memory information and volume group size and free
626 This is a multi-node call.
628 @type node_list: list
629 @param node_list: the list of nodes to query
630 @type vg_name: C{string}
631 @param vg_name: the name of the volume group to ask for disk space
633 @type hypervisor_type: C{str}
634 @param hypervisor_type: the name of the hypervisor to ask for
638 retux = self._MultiNodeCall(node_list, "node_info",
639 [vg_name, hypervisor_type])
641 for result in retux.itervalues():
642 if result.failed or not isinstance(result.data, dict):
647 log_name = "call_node_info"
649 utils.CheckDict(result.data, {
650 'memory_total' : '-',
653 'vg_size' : 'node_unreachable',
658 def call_node_add(self, node, dsa, dsapub, rsa, rsapub, ssh, sshpub):
659 """Add a node to the cluster.
661 This is a single-node call.
664 return self._SingleNodeCall(node, "node_add",
665 [dsa, dsapub, rsa, rsapub, ssh, sshpub])
667 def call_node_verify(self, node_list, checkdict, cluster_name):
668 """Request verification of given parameters.
670 This is a multi-node call.
673 return self._MultiNodeCall(node_list, "node_verify",
674 [checkdict, cluster_name])
677 def call_node_start_master(cls, node, start_daemons):
678 """Tells a node to activate itself as a master.
680 This is a single-node call.
683 return cls._StaticSingleNodeCall(node, "node_start_master",
687 def call_node_stop_master(cls, node, stop_daemons):
688 """Tells a node to demote itself from master status.
690 This is a single-node call.
693 return cls._StaticSingleNodeCall(node, "node_stop_master", [stop_daemons])
696 def call_master_info(cls, node_list):
697 """Query master info.
699 This is a multi-node call.
702 # TODO: should this method query down nodes?
703 return cls._StaticMultiNodeCall(node_list, "master_info", [])
705 def call_version(self, node_list):
706 """Query node version.
708 This is a multi-node call.
711 return self._MultiNodeCall(node_list, "version", [])
713 def call_blockdev_create(self, node, bdev, size, owner, on_primary, info):
714 """Request creation of a given block device.
716 This is a single-node call.
719 return self._SingleNodeCall(node, "blockdev_create",
720 [bdev.ToDict(), size, owner, on_primary, info])
722 def call_blockdev_remove(self, node, bdev):
723 """Request removal of a given block device.
725 This is a single-node call.
728 return self._SingleNodeCall(node, "blockdev_remove", [bdev.ToDict()])
730 def call_blockdev_rename(self, node, devlist):
731 """Request rename of the given block devices.
733 This is a single-node call.
736 return self._SingleNodeCall(node, "blockdev_rename",
737 [(d.ToDict(), uid) for d, uid in devlist])
739 def call_blockdev_assemble(self, node, disk, owner, on_primary):
740 """Request assembling of a given block device.
742 This is a single-node call.
745 return self._SingleNodeCall(node, "blockdev_assemble",
746 [disk.ToDict(), owner, on_primary])
748 def call_blockdev_shutdown(self, node, disk):
749 """Request shutdown of a given block device.
751 This is a single-node call.
754 return self._SingleNodeCall(node, "blockdev_shutdown", [disk.ToDict()])
756 def call_blockdev_addchildren(self, node, bdev, ndevs):
757 """Request adding a list of children to a (mirroring) device.
759 This is a single-node call.
762 return self._SingleNodeCall(node, "blockdev_addchildren",
764 [disk.ToDict() for disk in ndevs]])
766 def call_blockdev_removechildren(self, node, bdev, ndevs):
767 """Request removing a list of children from a (mirroring) device.
769 This is a single-node call.
772 return self._SingleNodeCall(node, "blockdev_removechildren",
774 [disk.ToDict() for disk in ndevs]])
776 def call_blockdev_getmirrorstatus(self, node, disks):
777 """Request status of a (mirroring) device.
779 This is a single-node call.
782 return self._SingleNodeCall(node, "blockdev_getmirrorstatus",
783 [dsk.ToDict() for dsk in disks])
785 def call_blockdev_find(self, node, disk):
786 """Request identification of a given block device.
788 This is a single-node call.
791 return self._SingleNodeCall(node, "blockdev_find", [disk.ToDict()])
793 def call_blockdev_close(self, node, instance_name, disks):
794 """Closes the given block devices.
796 This is a single-node call.
799 params = [instance_name, [cf.ToDict() for cf in disks]]
800 return self._SingleNodeCall(node, "blockdev_close", params)
802 def call_drbd_disconnect_net(self, node_list, nodes_ip, disks):
803 """Disconnects the network of the given drbd devices.
805 This is a multi-node call.
808 return self._MultiNodeCall(node_list, "drbd_disconnect_net",
809 [nodes_ip, [cf.ToDict() for cf in disks]])
811 def call_drbd_attach_net(self, node_list, nodes_ip,
812 disks, instance_name, multimaster):
813 """Disconnects the given drbd devices.
815 This is a multi-node call.
818 return self._MultiNodeCall(node_list, "drbd_attach_net",
819 [nodes_ip, [cf.ToDict() for cf in disks],
820 instance_name, multimaster])
822 def call_drbd_wait_sync(self, node_list, nodes_ip, disks):
823 """Waits for the synchronization of drbd devices is complete.
825 This is a multi-node call.
828 return self._MultiNodeCall(node_list, "drbd_wait_sync",
829 [nodes_ip, [cf.ToDict() for cf in disks]])
832 def call_upload_file(cls, node_list, file_name, address_list=None):
835 The node will refuse the operation in case the file is not on the
838 This is a multi-node call.
840 @type node_list: list
841 @param node_list: the list of node names to upload to
843 @param file_name: the filename to upload
844 @type address_list: list or None
845 @keyword address_list: an optional list of node addresses, in order
846 to optimize the RPC speed
849 file_contents = utils.ReadFile(file_name)
850 data = cls._Compress(file_contents)
851 st = os.stat(file_name)
852 params = [file_name, data, st.st_mode, st.st_uid, st.st_gid,
853 st.st_atime, st.st_mtime]
854 return cls._StaticMultiNodeCall(node_list, "upload_file", params,
855 address_list=address_list)
858 def call_write_ssconf_files(cls, node_list, values):
859 """Write ssconf files.
861 This is a multi-node call.
864 return cls._StaticMultiNodeCall(node_list, "write_ssconf_files", [values])
866 def call_os_diagnose(self, node_list):
867 """Request a diagnose of OS definitions.
869 This is a multi-node call.
872 result = self._MultiNodeCall(node_list, "os_diagnose", [])
874 for node_result in result.values():
875 if not node_result.failed and node_result.data:
876 node_result.data = [objects.OS.FromDict(oss)
877 for oss in node_result.data]
880 def call_os_get(self, node, name):
881 """Returns an OS definition.
883 This is a single-node call.
886 result = self._SingleNodeCall(node, "os_get", [name])
887 if not result.failed and isinstance(result.data, dict):
888 result.data = objects.OS.FromDict(result.data)
891 def call_hooks_runner(self, node_list, hpath, phase, env):
892 """Call the hooks runner.
895 - op: the OpCode instance
896 - env: a dictionary with the environment
898 This is a multi-node call.
901 params = [hpath, phase, env]
902 return self._MultiNodeCall(node_list, "hooks_runner", params)
904 def call_iallocator_runner(self, node, name, idata):
905 """Call an iallocator on a remote node
908 - name: the iallocator name
909 - input: the json-encoded input string
911 This is a single-node call.
914 return self._SingleNodeCall(node, "iallocator_runner", [name, idata])
916 def call_blockdev_grow(self, node, cf_bdev, amount):
917 """Request a snapshot of the given block device.
919 This is a single-node call.
922 return self._SingleNodeCall(node, "blockdev_grow",
923 [cf_bdev.ToDict(), amount])
925 def call_blockdev_snapshot(self, node, cf_bdev):
926 """Request a snapshot of the given block device.
928 This is a single-node call.
931 return self._SingleNodeCall(node, "blockdev_snapshot", [cf_bdev.ToDict()])
933 def call_snapshot_export(self, node, snap_bdev, dest_node, instance,
935 """Request the export of a given snapshot.
937 This is a single-node call.
940 return self._SingleNodeCall(node, "snapshot_export",
941 [snap_bdev.ToDict(), dest_node,
942 self._InstDict(instance), cluster_name, idx])
944 def call_finalize_export(self, node, instance, snap_disks):
945 """Request the completion of an export operation.
947 This writes the export config file, etc.
949 This is a single-node call.
953 for disk in snap_disks:
954 flat_disks.append(disk.ToDict())
956 return self._SingleNodeCall(node, "finalize_export",
957 [self._InstDict(instance), flat_disks])
959 def call_export_info(self, node, path):
960 """Queries the export information in a given path.
962 This is a single-node call.
965 result = self._SingleNodeCall(node, "export_info", [path])
966 if not result.failed and result.data:
967 result.data = objects.SerializableConfigParser.Loads(str(result.data))
970 def call_instance_os_import(self, node, inst, src_node, src_images,
972 """Request the import of a backup into an instance.
974 This is a single-node call.
977 return self._SingleNodeCall(node, "instance_os_import",
978 [self._InstDict(inst), src_node, src_images,
981 def call_export_list(self, node_list):
982 """Gets the stored exports list.
984 This is a multi-node call.
987 return self._MultiNodeCall(node_list, "export_list", [])
989 def call_export_remove(self, node, export):
990 """Requests removal of a given export.
992 This is a single-node call.
995 return self._SingleNodeCall(node, "export_remove", [export])
998 def call_node_leave_cluster(cls, node):
999 """Requests a node to clean the cluster information it has.
1001 This will remove the configuration information from the ganeti data
1004 This is a single-node call.
1007 return cls._StaticSingleNodeCall(node, "node_leave_cluster", [])
1009 def call_node_volumes(self, node_list):
1010 """Gets all volumes on node(s).
1012 This is a multi-node call.
1015 return self._MultiNodeCall(node_list, "node_volumes", [])
1017 def call_node_demote_from_mc(self, node):
1018 """Demote a node from the master candidate role.
1020 This is a single-node call.
1023 return self._SingleNodeCall(node, "node_demote_from_mc", [])
1025 def call_test_delay(self, node_list, duration):
1026 """Sleep for a fixed time on given node(s).
1028 This is a multi-node call.
1031 return self._MultiNodeCall(node_list, "test_delay", [duration])
1033 def call_file_storage_dir_create(self, node, file_storage_dir):
1034 """Create the given file storage directory.
1036 This is a single-node call.
1039 return self._SingleNodeCall(node, "file_storage_dir_create",
1042 def call_file_storage_dir_remove(self, node, file_storage_dir):
1043 """Remove the given file storage directory.
1045 This is a single-node call.
1048 return self._SingleNodeCall(node, "file_storage_dir_remove",
1051 def call_file_storage_dir_rename(self, node, old_file_storage_dir,
1052 new_file_storage_dir):
1053 """Rename file storage directory.
1055 This is a single-node call.
1058 return self._SingleNodeCall(node, "file_storage_dir_rename",
1059 [old_file_storage_dir, new_file_storage_dir])
1062 def call_jobqueue_update(cls, node_list, address_list, file_name, content):
1063 """Update job queue.
1065 This is a multi-node call.
1068 return cls._StaticMultiNodeCall(node_list, "jobqueue_update",
1069 [file_name, cls._Compress(content)],
1070 address_list=address_list)
1073 def call_jobqueue_purge(cls, node):
1076 This is a single-node call.
1079 return cls._StaticSingleNodeCall(node, "jobqueue_purge", [])
1082 def call_jobqueue_rename(cls, node_list, address_list, rename):
1083 """Rename a job queue file.
1085 This is a multi-node call.
1088 return cls._StaticMultiNodeCall(node_list, "jobqueue_rename", rename,
1089 address_list=address_list)
1092 def call_jobqueue_set_drain(cls, node_list, drain_flag):
1093 """Set the drain flag on the queue.
1095 This is a multi-node call.
1097 @type node_list: list
1098 @param node_list: the list of nodes to query
1099 @type drain_flag: bool
1100 @param drain_flag: if True, will set the drain flag, otherwise reset it.
1103 return cls._StaticMultiNodeCall(node_list, "jobqueue_set_drain",
1106 def call_hypervisor_validate_params(self, node_list, hvname, hvparams):
1107 """Validate the hypervisor params.
1109 This is a multi-node call.
1111 @type node_list: list
1112 @param node_list: the list of nodes to query
1113 @type hvname: string
1114 @param hvname: the hypervisor name
1115 @type hvparams: dict
1116 @param hvparams: the hypervisor parameters to be validated
1119 cluster = self._cfg.GetClusterInfo()
1120 hv_full = cluster.FillDict(cluster.hvparams.get(hvname, {}), hvparams)
1121 return self._MultiNodeCall(node_list, "hypervisor_validate_params",