root / lib / cmdlib / common.py @ 02a6b50a
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1 | 1a732a74 | Thomas Thrainer | #
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2 | 1a732a74 | Thomas Thrainer | #
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3 | 1a732a74 | Thomas Thrainer | |
4 | 1a732a74 | Thomas Thrainer | # Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Google Inc.
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5 | 1a732a74 | Thomas Thrainer | #
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6 | 1a732a74 | Thomas Thrainer | # This program is free software; you can redistribute it and/or modify
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7 | 1a732a74 | Thomas Thrainer | # it under the terms of the GNU General Public License as published by
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8 | 1a732a74 | Thomas Thrainer | # the Free Software Foundation; either version 2 of the License, or
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9 | 1a732a74 | Thomas Thrainer | # (at your option) any later version.
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10 | 1a732a74 | Thomas Thrainer | #
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11 | 1a732a74 | Thomas Thrainer | # This program is distributed in the hope that it will be useful, but
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12 | 1a732a74 | Thomas Thrainer | # WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | 1a732a74 | Thomas Thrainer | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | 1a732a74 | Thomas Thrainer | # General Public License for more details.
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15 | 1a732a74 | Thomas Thrainer | #
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16 | 1a732a74 | Thomas Thrainer | # You should have received a copy of the GNU General Public License
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17 | 1a732a74 | Thomas Thrainer | # along with this program; if not, write to the Free Software
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18 | 1a732a74 | Thomas Thrainer | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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19 | 1a732a74 | Thomas Thrainer | # 02110-1301, USA.
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20 | 1a732a74 | Thomas Thrainer | |
21 | 1a732a74 | Thomas Thrainer | |
22 | 1a732a74 | Thomas Thrainer | """Common functions used by multiple logical units."""
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23 | f380d53c | Thomas Thrainer | |
24 | 7352d33b | Thomas Thrainer | import copy |
25 | 7352d33b | Thomas Thrainer | import os |
26 | 1a732a74 | Thomas Thrainer | |
27 | f380d53c | Thomas Thrainer | from ganeti import compat |
28 | 7352d33b | Thomas Thrainer | from ganeti import constants |
29 | 1a732a74 | Thomas Thrainer | from ganeti import errors |
30 | 7352d33b | Thomas Thrainer | from ganeti import hypervisor |
31 | fb3891d0 | Thomas Thrainer | from ganeti import locking |
32 | 7352d33b | Thomas Thrainer | from ganeti import objects |
33 | f380d53c | Thomas Thrainer | from ganeti import opcodes |
34 | 7352d33b | Thomas Thrainer | from ganeti import pathutils |
35 | 7352d33b | Thomas Thrainer | from ganeti import rpc |
36 | 7352d33b | Thomas Thrainer | from ganeti import ssconf |
37 | 37dc17e3 | Thomas Thrainer | from ganeti import utils |
38 | 1a732a74 | Thomas Thrainer | |
39 | 1a732a74 | Thomas Thrainer | |
40 | 31b836b8 | Thomas Thrainer | # States of instance
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41 | 31b836b8 | Thomas Thrainer | INSTANCE_DOWN = [constants.ADMINST_DOWN] |
42 | 31b836b8 | Thomas Thrainer | INSTANCE_ONLINE = [constants.ADMINST_DOWN, constants.ADMINST_UP] |
43 | 31b836b8 | Thomas Thrainer | INSTANCE_NOT_RUNNING = [constants.ADMINST_DOWN, constants.ADMINST_OFFLINE] |
44 | 31b836b8 | Thomas Thrainer | |
45 | 31b836b8 | Thomas Thrainer | #: Instance status in which an instance can be marked as offline/online
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46 | 31b836b8 | Thomas Thrainer | CAN_CHANGE_INSTANCE_OFFLINE = (frozenset(INSTANCE_DOWN) | frozenset([ |
47 | 31b836b8 | Thomas Thrainer | constants.ADMINST_OFFLINE, |
48 | 31b836b8 | Thomas Thrainer | ])) |
49 | 31b836b8 | Thomas Thrainer | |
50 | 31b836b8 | Thomas Thrainer | |
51 | 1a732a74 | Thomas Thrainer | def _ExpandItemName(fn, name, kind): |
52 | 1a732a74 | Thomas Thrainer | """Expand an item name.
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53 | 1a732a74 | Thomas Thrainer |
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54 | 1a732a74 | Thomas Thrainer | @param fn: the function to use for expansion
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55 | 1a732a74 | Thomas Thrainer | @param name: requested item name
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56 | 1a732a74 | Thomas Thrainer | @param kind: text description ('Node' or 'Instance')
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57 | 1a732a74 | Thomas Thrainer | @return: the resolved (full) name
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58 | 1a732a74 | Thomas Thrainer | @raise errors.OpPrereqError: if the item is not found
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59 | 1a732a74 | Thomas Thrainer |
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60 | 1a732a74 | Thomas Thrainer | """
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61 | 1a732a74 | Thomas Thrainer | full_name = fn(name) |
62 | 1a732a74 | Thomas Thrainer | if full_name is None: |
63 | 1a732a74 | Thomas Thrainer | raise errors.OpPrereqError("%s '%s' not known" % (kind, name), |
64 | 1a732a74 | Thomas Thrainer | errors.ECODE_NOENT) |
65 | 1a732a74 | Thomas Thrainer | return full_name
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66 | 1a732a74 | Thomas Thrainer | |
67 | 1a732a74 | Thomas Thrainer | |
68 | 5eacbcae | Thomas Thrainer | def ExpandInstanceName(cfg, name): |
69 | 1a732a74 | Thomas Thrainer | """Wrapper over L{_ExpandItemName} for instance."""
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70 | 1a732a74 | Thomas Thrainer | return _ExpandItemName(cfg.ExpandInstanceName, name, "Instance") |
71 | 1a732a74 | Thomas Thrainer | |
72 | 1a732a74 | Thomas Thrainer | |
73 | 5eacbcae | Thomas Thrainer | def ExpandNodeName(cfg, name): |
74 | 1a732a74 | Thomas Thrainer | """Wrapper over L{_ExpandItemName} for nodes."""
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75 | 1a732a74 | Thomas Thrainer | return _ExpandItemName(cfg.ExpandNodeName, name, "Node") |
76 | fb3891d0 | Thomas Thrainer | |
77 | fb3891d0 | Thomas Thrainer | |
78 | 5eacbcae | Thomas Thrainer | def ShareAll(): |
79 | fb3891d0 | Thomas Thrainer | """Returns a dict declaring all lock levels shared.
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80 | fb3891d0 | Thomas Thrainer |
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81 | fb3891d0 | Thomas Thrainer | """
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82 | fb3891d0 | Thomas Thrainer | return dict.fromkeys(locking.LEVELS, 1) |
83 | 37dc17e3 | Thomas Thrainer | |
84 | 37dc17e3 | Thomas Thrainer | |
85 | 5eacbcae | Thomas Thrainer | def CheckNodeGroupInstances(cfg, group_uuid, owned_instances): |
86 | 37dc17e3 | Thomas Thrainer | """Checks if the instances in a node group are still correct.
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87 | 37dc17e3 | Thomas Thrainer |
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88 | 37dc17e3 | Thomas Thrainer | @type cfg: L{config.ConfigWriter}
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89 | 37dc17e3 | Thomas Thrainer | @param cfg: The cluster configuration
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90 | 37dc17e3 | Thomas Thrainer | @type group_uuid: string
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91 | 37dc17e3 | Thomas Thrainer | @param group_uuid: Node group UUID
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92 | 37dc17e3 | Thomas Thrainer | @type owned_instances: set or frozenset
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93 | 37dc17e3 | Thomas Thrainer | @param owned_instances: List of currently owned instances
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94 | 37dc17e3 | Thomas Thrainer |
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95 | 37dc17e3 | Thomas Thrainer | """
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96 | 37dc17e3 | Thomas Thrainer | wanted_instances = cfg.GetNodeGroupInstances(group_uuid) |
97 | 37dc17e3 | Thomas Thrainer | if owned_instances != wanted_instances:
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98 | 37dc17e3 | Thomas Thrainer | raise errors.OpPrereqError("Instances in node group '%s' changed since" |
99 | 37dc17e3 | Thomas Thrainer | " locks were acquired, wanted '%s', have '%s';"
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100 | 37dc17e3 | Thomas Thrainer | " retry the operation" %
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101 | 37dc17e3 | Thomas Thrainer | (group_uuid, |
102 | 37dc17e3 | Thomas Thrainer | utils.CommaJoin(wanted_instances), |
103 | 37dc17e3 | Thomas Thrainer | utils.CommaJoin(owned_instances)), |
104 | 37dc17e3 | Thomas Thrainer | errors.ECODE_STATE) |
105 | 37dc17e3 | Thomas Thrainer | |
106 | 37dc17e3 | Thomas Thrainer | return wanted_instances
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107 | 1d870e0d | Thomas Thrainer | |
108 | 1d870e0d | Thomas Thrainer | |
109 | 5eacbcae | Thomas Thrainer | def GetWantedNodes(lu, nodes): |
110 | 1d870e0d | Thomas Thrainer | """Returns list of checked and expanded node names.
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111 | 1d870e0d | Thomas Thrainer |
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112 | 1d870e0d | Thomas Thrainer | @type lu: L{LogicalUnit}
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113 | 1d870e0d | Thomas Thrainer | @param lu: the logical unit on whose behalf we execute
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114 | 1d870e0d | Thomas Thrainer | @type nodes: list
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115 | 1d870e0d | Thomas Thrainer | @param nodes: list of node names or None for all nodes
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116 | 1d870e0d | Thomas Thrainer | @rtype: list
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117 | 1d870e0d | Thomas Thrainer | @return: the list of nodes, sorted
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118 | 1d870e0d | Thomas Thrainer | @raise errors.ProgrammerError: if the nodes parameter is wrong type
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119 | 1d870e0d | Thomas Thrainer |
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120 | 1d870e0d | Thomas Thrainer | """
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121 | 1d870e0d | Thomas Thrainer | if nodes:
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122 | 5eacbcae | Thomas Thrainer | return [ExpandNodeName(lu.cfg, name) for name in nodes] |
123 | 1d870e0d | Thomas Thrainer | |
124 | 1d870e0d | Thomas Thrainer | return utils.NiceSort(lu.cfg.GetNodeList())
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125 | 1d870e0d | Thomas Thrainer | |
126 | 1d870e0d | Thomas Thrainer | |
127 | 5eacbcae | Thomas Thrainer | def GetWantedInstances(lu, instances): |
128 | 1d870e0d | Thomas Thrainer | """Returns list of checked and expanded instance names.
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129 | 1d870e0d | Thomas Thrainer |
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130 | 1d870e0d | Thomas Thrainer | @type lu: L{LogicalUnit}
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131 | 1d870e0d | Thomas Thrainer | @param lu: the logical unit on whose behalf we execute
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132 | 1d870e0d | Thomas Thrainer | @type instances: list
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133 | 1d870e0d | Thomas Thrainer | @param instances: list of instance names or None for all instances
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134 | 1d870e0d | Thomas Thrainer | @rtype: list
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135 | 1d870e0d | Thomas Thrainer | @return: the list of instances, sorted
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136 | 1d870e0d | Thomas Thrainer | @raise errors.OpPrereqError: if the instances parameter is wrong type
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137 | 1d870e0d | Thomas Thrainer | @raise errors.OpPrereqError: if any of the passed instances is not found
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138 | 1d870e0d | Thomas Thrainer |
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139 | 1d870e0d | Thomas Thrainer | """
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140 | 1d870e0d | Thomas Thrainer | if instances:
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141 | 5eacbcae | Thomas Thrainer | wanted = [ExpandInstanceName(lu.cfg, name) for name in instances] |
142 | 1d870e0d | Thomas Thrainer | else:
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143 | 1d870e0d | Thomas Thrainer | wanted = utils.NiceSort(lu.cfg.GetInstanceList()) |
144 | 1d870e0d | Thomas Thrainer | return wanted
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145 | 7352d33b | Thomas Thrainer | |
146 | 7352d33b | Thomas Thrainer | |
147 | 5eacbcae | Thomas Thrainer | def RunPostHook(lu, node_name): |
148 | 7352d33b | Thomas Thrainer | """Runs the post-hook for an opcode on a single node.
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149 | 7352d33b | Thomas Thrainer |
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150 | 7352d33b | Thomas Thrainer | """
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151 | 7352d33b | Thomas Thrainer | hm = lu.proc.BuildHooksManager(lu) |
152 | 7352d33b | Thomas Thrainer | try:
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153 | 7352d33b | Thomas Thrainer | hm.RunPhase(constants.HOOKS_PHASE_POST, nodes=[node_name]) |
154 | 7352d33b | Thomas Thrainer | except Exception, err: # pylint: disable=W0703 |
155 | 7352d33b | Thomas Thrainer | lu.LogWarning("Errors occurred running hooks on %s: %s",
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156 | 7352d33b | Thomas Thrainer | node_name, err) |
157 | 7352d33b | Thomas Thrainer | |
158 | 7352d33b | Thomas Thrainer | |
159 | 5eacbcae | Thomas Thrainer | def RedistributeAncillaryFiles(lu, additional_nodes=None, additional_vm=True): |
160 | 7352d33b | Thomas Thrainer | """Distribute additional files which are part of the cluster configuration.
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161 | 7352d33b | Thomas Thrainer |
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162 | 7352d33b | Thomas Thrainer | ConfigWriter takes care of distributing the config and ssconf files, but
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163 | 7352d33b | Thomas Thrainer | there are more files which should be distributed to all nodes. This function
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164 | 7352d33b | Thomas Thrainer | makes sure those are copied.
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165 | 7352d33b | Thomas Thrainer |
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166 | 7352d33b | Thomas Thrainer | @param lu: calling logical unit
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167 | 7352d33b | Thomas Thrainer | @param additional_nodes: list of nodes not in the config to distribute to
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168 | 7352d33b | Thomas Thrainer | @type additional_vm: boolean
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169 | 7352d33b | Thomas Thrainer | @param additional_vm: whether the additional nodes are vm-capable or not
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170 | 7352d33b | Thomas Thrainer |
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171 | 7352d33b | Thomas Thrainer | """
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172 | 7352d33b | Thomas Thrainer | # Gather target nodes
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173 | 7352d33b | Thomas Thrainer | cluster = lu.cfg.GetClusterInfo() |
174 | 7352d33b | Thomas Thrainer | master_info = lu.cfg.GetNodeInfo(lu.cfg.GetMasterNode()) |
175 | 7352d33b | Thomas Thrainer | |
176 | 7352d33b | Thomas Thrainer | online_nodes = lu.cfg.GetOnlineNodeList() |
177 | 7352d33b | Thomas Thrainer | online_set = frozenset(online_nodes)
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178 | 7352d33b | Thomas Thrainer | vm_nodes = list(online_set.intersection(lu.cfg.GetVmCapableNodeList()))
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179 | 7352d33b | Thomas Thrainer | |
180 | 7352d33b | Thomas Thrainer | if additional_nodes is not None: |
181 | 7352d33b | Thomas Thrainer | online_nodes.extend(additional_nodes) |
182 | 7352d33b | Thomas Thrainer | if additional_vm:
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183 | 7352d33b | Thomas Thrainer | vm_nodes.extend(additional_nodes) |
184 | 7352d33b | Thomas Thrainer | |
185 | 7352d33b | Thomas Thrainer | # Never distribute to master node
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186 | 7352d33b | Thomas Thrainer | for nodelist in [online_nodes, vm_nodes]: |
187 | 7352d33b | Thomas Thrainer | if master_info.name in nodelist: |
188 | 7352d33b | Thomas Thrainer | nodelist.remove(master_info.name) |
189 | 7352d33b | Thomas Thrainer | |
190 | 7352d33b | Thomas Thrainer | # Gather file lists
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191 | 7352d33b | Thomas Thrainer | (files_all, _, files_mc, files_vm) = \ |
192 | 5eacbcae | Thomas Thrainer | ComputeAncillaryFiles(cluster, True)
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193 | 7352d33b | Thomas Thrainer | |
194 | 7352d33b | Thomas Thrainer | # Never re-distribute configuration file from here
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195 | 7352d33b | Thomas Thrainer | assert not (pathutils.CLUSTER_CONF_FILE in files_all or |
196 | 7352d33b | Thomas Thrainer | pathutils.CLUSTER_CONF_FILE in files_vm)
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197 | 7352d33b | Thomas Thrainer | assert not files_mc, "Master candidates not handled in this function" |
198 | 7352d33b | Thomas Thrainer | |
199 | 7352d33b | Thomas Thrainer | filemap = [ |
200 | 7352d33b | Thomas Thrainer | (online_nodes, files_all), |
201 | 7352d33b | Thomas Thrainer | (vm_nodes, files_vm), |
202 | 7352d33b | Thomas Thrainer | ] |
203 | 7352d33b | Thomas Thrainer | |
204 | 7352d33b | Thomas Thrainer | # Upload the files
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205 | 7352d33b | Thomas Thrainer | for (node_list, files) in filemap: |
206 | 7352d33b | Thomas Thrainer | for fname in files: |
207 | 5eacbcae | Thomas Thrainer | UploadHelper(lu, node_list, fname) |
208 | 7352d33b | Thomas Thrainer | |
209 | 7352d33b | Thomas Thrainer | |
210 | 5eacbcae | Thomas Thrainer | def ComputeAncillaryFiles(cluster, redist): |
211 | 7352d33b | Thomas Thrainer | """Compute files external to Ganeti which need to be consistent.
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212 | 7352d33b | Thomas Thrainer |
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213 | 7352d33b | Thomas Thrainer | @type redist: boolean
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214 | 7352d33b | Thomas Thrainer | @param redist: Whether to include files which need to be redistributed
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215 | 7352d33b | Thomas Thrainer |
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216 | 7352d33b | Thomas Thrainer | """
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217 | 7352d33b | Thomas Thrainer | # Compute files for all nodes
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218 | 7352d33b | Thomas Thrainer | files_all = set([
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219 | 7352d33b | Thomas Thrainer | pathutils.SSH_KNOWN_HOSTS_FILE, |
220 | 7352d33b | Thomas Thrainer | pathutils.CONFD_HMAC_KEY, |
221 | 7352d33b | Thomas Thrainer | pathutils.CLUSTER_DOMAIN_SECRET_FILE, |
222 | 7352d33b | Thomas Thrainer | pathutils.SPICE_CERT_FILE, |
223 | 7352d33b | Thomas Thrainer | pathutils.SPICE_CACERT_FILE, |
224 | 7352d33b | Thomas Thrainer | pathutils.RAPI_USERS_FILE, |
225 | 7352d33b | Thomas Thrainer | ]) |
226 | 7352d33b | Thomas Thrainer | |
227 | 7352d33b | Thomas Thrainer | if redist:
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228 | 7352d33b | Thomas Thrainer | # we need to ship at least the RAPI certificate
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229 | 7352d33b | Thomas Thrainer | files_all.add(pathutils.RAPI_CERT_FILE) |
230 | 7352d33b | Thomas Thrainer | else:
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231 | 7352d33b | Thomas Thrainer | files_all.update(pathutils.ALL_CERT_FILES) |
232 | 7352d33b | Thomas Thrainer | files_all.update(ssconf.SimpleStore().GetFileList()) |
233 | 7352d33b | Thomas Thrainer | |
234 | 7352d33b | Thomas Thrainer | if cluster.modify_etc_hosts:
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235 | 7352d33b | Thomas Thrainer | files_all.add(pathutils.ETC_HOSTS) |
236 | 7352d33b | Thomas Thrainer | |
237 | 7352d33b | Thomas Thrainer | if cluster.use_external_mip_script:
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238 | 7352d33b | Thomas Thrainer | files_all.add(pathutils.EXTERNAL_MASTER_SETUP_SCRIPT) |
239 | 7352d33b | Thomas Thrainer | |
240 | 7352d33b | Thomas Thrainer | # Files which are optional, these must:
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241 | 7352d33b | Thomas Thrainer | # - be present in one other category as well
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242 | 7352d33b | Thomas Thrainer | # - either exist or not exist on all nodes of that category (mc, vm all)
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243 | 7352d33b | Thomas Thrainer | files_opt = set([
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244 | 7352d33b | Thomas Thrainer | pathutils.RAPI_USERS_FILE, |
245 | 7352d33b | Thomas Thrainer | ]) |
246 | 7352d33b | Thomas Thrainer | |
247 | 7352d33b | Thomas Thrainer | # Files which should only be on master candidates
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248 | 7352d33b | Thomas Thrainer | files_mc = set()
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249 | 7352d33b | Thomas Thrainer | |
250 | 7352d33b | Thomas Thrainer | if not redist: |
251 | 7352d33b | Thomas Thrainer | files_mc.add(pathutils.CLUSTER_CONF_FILE) |
252 | 7352d33b | Thomas Thrainer | |
253 | 7352d33b | Thomas Thrainer | # File storage
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254 | 7352d33b | Thomas Thrainer | if (not redist and (constants.ENABLE_FILE_STORAGE or |
255 | 7352d33b | Thomas Thrainer | constants.ENABLE_SHARED_FILE_STORAGE)): |
256 | 7352d33b | Thomas Thrainer | files_all.add(pathutils.FILE_STORAGE_PATHS_FILE) |
257 | 7352d33b | Thomas Thrainer | files_opt.add(pathutils.FILE_STORAGE_PATHS_FILE) |
258 | 7352d33b | Thomas Thrainer | |
259 | 7352d33b | Thomas Thrainer | # Files which should only be on VM-capable nodes
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260 | 7352d33b | Thomas Thrainer | files_vm = set(
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261 | 7352d33b | Thomas Thrainer | filename |
262 | 7352d33b | Thomas Thrainer | for hv_name in cluster.enabled_hypervisors |
263 | 7352d33b | Thomas Thrainer | for filename in |
264 | 7352d33b | Thomas Thrainer | hypervisor.GetHypervisorClass(hv_name).GetAncillaryFiles()[0])
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265 | 7352d33b | Thomas Thrainer | |
266 | 7352d33b | Thomas Thrainer | files_opt |= set(
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267 | 7352d33b | Thomas Thrainer | filename |
268 | 7352d33b | Thomas Thrainer | for hv_name in cluster.enabled_hypervisors |
269 | 7352d33b | Thomas Thrainer | for filename in |
270 | 7352d33b | Thomas Thrainer | hypervisor.GetHypervisorClass(hv_name).GetAncillaryFiles()[1])
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271 | 7352d33b | Thomas Thrainer | |
272 | 7352d33b | Thomas Thrainer | # Filenames in each category must be unique
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273 | 7352d33b | Thomas Thrainer | all_files_set = files_all | files_mc | files_vm |
274 | 7352d33b | Thomas Thrainer | assert (len(all_files_set) == |
275 | 7352d33b | Thomas Thrainer | sum(map(len, [files_all, files_mc, files_vm]))), \ |
276 | 7352d33b | Thomas Thrainer | "Found file listed in more than one file list"
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277 | 7352d33b | Thomas Thrainer | |
278 | 7352d33b | Thomas Thrainer | # Optional files must be present in one other category
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279 | 7352d33b | Thomas Thrainer | assert all_files_set.issuperset(files_opt), \
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280 | 7352d33b | Thomas Thrainer | "Optional file not in a different required list"
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281 | 7352d33b | Thomas Thrainer | |
282 | 7352d33b | Thomas Thrainer | # This one file should never ever be re-distributed via RPC
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283 | 7352d33b | Thomas Thrainer | assert not (redist and |
284 | 7352d33b | Thomas Thrainer | pathutils.FILE_STORAGE_PATHS_FILE in all_files_set)
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285 | 7352d33b | Thomas Thrainer | |
286 | 7352d33b | Thomas Thrainer | return (files_all, files_opt, files_mc, files_vm)
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287 | 7352d33b | Thomas Thrainer | |
288 | 7352d33b | Thomas Thrainer | |
289 | 5eacbcae | Thomas Thrainer | def UploadHelper(lu, nodes, fname): |
290 | 7352d33b | Thomas Thrainer | """Helper for uploading a file and showing warnings.
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291 | 7352d33b | Thomas Thrainer |
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292 | 7352d33b | Thomas Thrainer | """
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293 | 7352d33b | Thomas Thrainer | if os.path.exists(fname):
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294 | 7352d33b | Thomas Thrainer | result = lu.rpc.call_upload_file(nodes, fname) |
295 | 7352d33b | Thomas Thrainer | for to_node, to_result in result.items(): |
296 | 7352d33b | Thomas Thrainer | msg = to_result.fail_msg |
297 | 7352d33b | Thomas Thrainer | if msg:
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298 | 7352d33b | Thomas Thrainer | msg = ("Copy of file %s to node %s failed: %s" %
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299 | 7352d33b | Thomas Thrainer | (fname, to_node, msg)) |
300 | 7352d33b | Thomas Thrainer | lu.LogWarning(msg) |
301 | 7352d33b | Thomas Thrainer | |
302 | 7352d33b | Thomas Thrainer | |
303 | 5eacbcae | Thomas Thrainer | def MergeAndVerifyHvState(op_input, obj_input): |
304 | 7352d33b | Thomas Thrainer | """Combines the hv state from an opcode with the one of the object
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305 | 7352d33b | Thomas Thrainer |
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306 | 7352d33b | Thomas Thrainer | @param op_input: The input dict from the opcode
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307 | 7352d33b | Thomas Thrainer | @param obj_input: The input dict from the objects
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308 | 7352d33b | Thomas Thrainer | @return: The verified and updated dict
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309 | 7352d33b | Thomas Thrainer |
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310 | 7352d33b | Thomas Thrainer | """
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311 | 7352d33b | Thomas Thrainer | if op_input:
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312 | 7352d33b | Thomas Thrainer | invalid_hvs = set(op_input) - constants.HYPER_TYPES
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313 | 7352d33b | Thomas Thrainer | if invalid_hvs:
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314 | 7352d33b | Thomas Thrainer | raise errors.OpPrereqError("Invalid hypervisor(s) in hypervisor state:" |
315 | 7352d33b | Thomas Thrainer | " %s" % utils.CommaJoin(invalid_hvs),
|
316 | 7352d33b | Thomas Thrainer | errors.ECODE_INVAL) |
317 | 7352d33b | Thomas Thrainer | if obj_input is None: |
318 | 7352d33b | Thomas Thrainer | obj_input = {} |
319 | 7352d33b | Thomas Thrainer | type_check = constants.HVSTS_PARAMETER_TYPES |
320 | 7352d33b | Thomas Thrainer | return _UpdateAndVerifySubDict(obj_input, op_input, type_check)
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321 | 7352d33b | Thomas Thrainer | |
322 | 7352d33b | Thomas Thrainer | return None |
323 | 7352d33b | Thomas Thrainer | |
324 | 7352d33b | Thomas Thrainer | |
325 | 5eacbcae | Thomas Thrainer | def MergeAndVerifyDiskState(op_input, obj_input): |
326 | 7352d33b | Thomas Thrainer | """Combines the disk state from an opcode with the one of the object
|
327 | 7352d33b | Thomas Thrainer |
|
328 | 7352d33b | Thomas Thrainer | @param op_input: The input dict from the opcode
|
329 | 7352d33b | Thomas Thrainer | @param obj_input: The input dict from the objects
|
330 | 7352d33b | Thomas Thrainer | @return: The verified and updated dict
|
331 | 7352d33b | Thomas Thrainer | """
|
332 | 7352d33b | Thomas Thrainer | if op_input:
|
333 | 7352d33b | Thomas Thrainer | invalid_dst = set(op_input) - constants.DS_VALID_TYPES
|
334 | 7352d33b | Thomas Thrainer | if invalid_dst:
|
335 | 7352d33b | Thomas Thrainer | raise errors.OpPrereqError("Invalid storage type(s) in disk state: %s" % |
336 | 7352d33b | Thomas Thrainer | utils.CommaJoin(invalid_dst), |
337 | 7352d33b | Thomas Thrainer | errors.ECODE_INVAL) |
338 | 7352d33b | Thomas Thrainer | type_check = constants.DSS_PARAMETER_TYPES |
339 | 7352d33b | Thomas Thrainer | if obj_input is None: |
340 | 7352d33b | Thomas Thrainer | obj_input = {} |
341 | 7352d33b | Thomas Thrainer | return dict((key, _UpdateAndVerifySubDict(obj_input.get(key, {}), value, |
342 | 7352d33b | Thomas Thrainer | type_check)) |
343 | 7352d33b | Thomas Thrainer | for key, value in op_input.items()) |
344 | 7352d33b | Thomas Thrainer | |
345 | 7352d33b | Thomas Thrainer | return None |
346 | 7352d33b | Thomas Thrainer | |
347 | 7352d33b | Thomas Thrainer | |
348 | 5eacbcae | Thomas Thrainer | def CheckOSParams(lu, required, nodenames, osname, osparams): |
349 | 7352d33b | Thomas Thrainer | """OS parameters validation.
|
350 | 7352d33b | Thomas Thrainer |
|
351 | 7352d33b | Thomas Thrainer | @type lu: L{LogicalUnit}
|
352 | 7352d33b | Thomas Thrainer | @param lu: the logical unit for which we check
|
353 | 7352d33b | Thomas Thrainer | @type required: boolean
|
354 | 7352d33b | Thomas Thrainer | @param required: whether the validation should fail if the OS is not
|
355 | 7352d33b | Thomas Thrainer | found
|
356 | 7352d33b | Thomas Thrainer | @type nodenames: list
|
357 | 7352d33b | Thomas Thrainer | @param nodenames: the list of nodes on which we should check
|
358 | 7352d33b | Thomas Thrainer | @type osname: string
|
359 | 7352d33b | Thomas Thrainer | @param osname: the name of the hypervisor we should use
|
360 | 7352d33b | Thomas Thrainer | @type osparams: dict
|
361 | 7352d33b | Thomas Thrainer | @param osparams: the parameters which we need to check
|
362 | 7352d33b | Thomas Thrainer | @raise errors.OpPrereqError: if the parameters are not valid
|
363 | 7352d33b | Thomas Thrainer |
|
364 | 7352d33b | Thomas Thrainer | """
|
365 | 7352d33b | Thomas Thrainer | nodenames = _FilterVmNodes(lu, nodenames) |
366 | 7352d33b | Thomas Thrainer | result = lu.rpc.call_os_validate(nodenames, required, osname, |
367 | 7352d33b | Thomas Thrainer | [constants.OS_VALIDATE_PARAMETERS], |
368 | 7352d33b | Thomas Thrainer | osparams) |
369 | 7352d33b | Thomas Thrainer | for node, nres in result.items(): |
370 | 7352d33b | Thomas Thrainer | # we don't check for offline cases since this should be run only
|
371 | 7352d33b | Thomas Thrainer | # against the master node and/or an instance's nodes
|
372 | 7352d33b | Thomas Thrainer | nres.Raise("OS Parameters validation failed on node %s" % node)
|
373 | 7352d33b | Thomas Thrainer | if not nres.payload: |
374 | 7352d33b | Thomas Thrainer | lu.LogInfo("OS %s not found on node %s, validation skipped",
|
375 | 7352d33b | Thomas Thrainer | osname, node) |
376 | 7352d33b | Thomas Thrainer | |
377 | 7352d33b | Thomas Thrainer | |
378 | 5eacbcae | Thomas Thrainer | def CheckHVParams(lu, nodenames, hvname, hvparams): |
379 | 7352d33b | Thomas Thrainer | """Hypervisor parameter validation.
|
380 | 7352d33b | Thomas Thrainer |
|
381 | 7352d33b | Thomas Thrainer | This function abstract the hypervisor parameter validation to be
|
382 | 7352d33b | Thomas Thrainer | used in both instance create and instance modify.
|
383 | 7352d33b | Thomas Thrainer |
|
384 | 7352d33b | Thomas Thrainer | @type lu: L{LogicalUnit}
|
385 | 7352d33b | Thomas Thrainer | @param lu: the logical unit for which we check
|
386 | 7352d33b | Thomas Thrainer | @type nodenames: list
|
387 | 7352d33b | Thomas Thrainer | @param nodenames: the list of nodes on which we should check
|
388 | 7352d33b | Thomas Thrainer | @type hvname: string
|
389 | 7352d33b | Thomas Thrainer | @param hvname: the name of the hypervisor we should use
|
390 | 7352d33b | Thomas Thrainer | @type hvparams: dict
|
391 | 7352d33b | Thomas Thrainer | @param hvparams: the parameters which we need to check
|
392 | 7352d33b | Thomas Thrainer | @raise errors.OpPrereqError: if the parameters are not valid
|
393 | 7352d33b | Thomas Thrainer |
|
394 | 7352d33b | Thomas Thrainer | """
|
395 | 7352d33b | Thomas Thrainer | nodenames = _FilterVmNodes(lu, nodenames) |
396 | 7352d33b | Thomas Thrainer | |
397 | 7352d33b | Thomas Thrainer | cluster = lu.cfg.GetClusterInfo() |
398 | 7352d33b | Thomas Thrainer | hvfull = objects.FillDict(cluster.hvparams.get(hvname, {}), hvparams) |
399 | 7352d33b | Thomas Thrainer | |
400 | 7352d33b | Thomas Thrainer | hvinfo = lu.rpc.call_hypervisor_validate_params(nodenames, hvname, hvfull) |
401 | 7352d33b | Thomas Thrainer | for node in nodenames: |
402 | 7352d33b | Thomas Thrainer | info = hvinfo[node] |
403 | 7352d33b | Thomas Thrainer | if info.offline:
|
404 | 7352d33b | Thomas Thrainer | continue
|
405 | 7352d33b | Thomas Thrainer | info.Raise("Hypervisor parameter validation failed on node %s" % node)
|
406 | 7352d33b | Thomas Thrainer | |
407 | 7352d33b | Thomas Thrainer | |
408 | 5eacbcae | Thomas Thrainer | def AdjustCandidatePool(lu, exceptions): |
409 | 7352d33b | Thomas Thrainer | """Adjust the candidate pool after node operations.
|
410 | 7352d33b | Thomas Thrainer |
|
411 | 7352d33b | Thomas Thrainer | """
|
412 | 7352d33b | Thomas Thrainer | mod_list = lu.cfg.MaintainCandidatePool(exceptions) |
413 | 7352d33b | Thomas Thrainer | if mod_list:
|
414 | 7352d33b | Thomas Thrainer | lu.LogInfo("Promoted nodes to master candidate role: %s",
|
415 | 7352d33b | Thomas Thrainer | utils.CommaJoin(node.name for node in mod_list)) |
416 | 7352d33b | Thomas Thrainer | for name in mod_list: |
417 | 7352d33b | Thomas Thrainer | lu.context.ReaddNode(name) |
418 | 7352d33b | Thomas Thrainer | mc_now, mc_max, _ = lu.cfg.GetMasterCandidateStats(exceptions) |
419 | 7352d33b | Thomas Thrainer | if mc_now > mc_max:
|
420 | 7352d33b | Thomas Thrainer | lu.LogInfo("Note: more nodes are candidates (%d) than desired (%d)" %
|
421 | 7352d33b | Thomas Thrainer | (mc_now, mc_max)) |
422 | 7352d33b | Thomas Thrainer | |
423 | 7352d33b | Thomas Thrainer | |
424 | 5eacbcae | Thomas Thrainer | def CheckNodePVs(nresult, exclusive_storage): |
425 | 7352d33b | Thomas Thrainer | """Check node PVs.
|
426 | 7352d33b | Thomas Thrainer |
|
427 | 7352d33b | Thomas Thrainer | """
|
428 | 7352d33b | Thomas Thrainer | pvlist_dict = nresult.get(constants.NV_PVLIST, None)
|
429 | 7352d33b | Thomas Thrainer | if pvlist_dict is None: |
430 | 7352d33b | Thomas Thrainer | return (["Can't get PV list from node"], None) |
431 | 7352d33b | Thomas Thrainer | pvlist = map(objects.LvmPvInfo.FromDict, pvlist_dict)
|
432 | 7352d33b | Thomas Thrainer | errlist = [] |
433 | 7352d33b | Thomas Thrainer | # check that ':' is not present in PV names, since it's a
|
434 | 7352d33b | Thomas Thrainer | # special character for lvcreate (denotes the range of PEs to
|
435 | 7352d33b | Thomas Thrainer | # use on the PV)
|
436 | 7352d33b | Thomas Thrainer | for pv in pvlist: |
437 | 7352d33b | Thomas Thrainer | if ":" in pv.name: |
438 | 7352d33b | Thomas Thrainer | errlist.append("Invalid character ':' in PV '%s' of VG '%s'" %
|
439 | 7352d33b | Thomas Thrainer | (pv.name, pv.vg_name)) |
440 | 7352d33b | Thomas Thrainer | es_pvinfo = None
|
441 | 7352d33b | Thomas Thrainer | if exclusive_storage:
|
442 | 7352d33b | Thomas Thrainer | (errmsgs, es_pvinfo) = utils.LvmExclusiveCheckNodePvs(pvlist) |
443 | 7352d33b | Thomas Thrainer | errlist.extend(errmsgs) |
444 | 7352d33b | Thomas Thrainer | shared_pvs = nresult.get(constants.NV_EXCLUSIVEPVS, None)
|
445 | 7352d33b | Thomas Thrainer | if shared_pvs:
|
446 | 7352d33b | Thomas Thrainer | for (pvname, lvlist) in shared_pvs: |
447 | 7352d33b | Thomas Thrainer | # TODO: Check that LVs are really unrelated (snapshots, DRBD meta...)
|
448 | 7352d33b | Thomas Thrainer | errlist.append("PV %s is shared among unrelated LVs (%s)" %
|
449 | 7352d33b | Thomas Thrainer | (pvname, utils.CommaJoin(lvlist))) |
450 | 7352d33b | Thomas Thrainer | return (errlist, es_pvinfo)
|
451 | 7352d33b | Thomas Thrainer | |
452 | 7352d33b | Thomas Thrainer | |
453 | 7352d33b | Thomas Thrainer | def _ComputeMinMaxSpec(name, qualifier, ispecs, value): |
454 | 7352d33b | Thomas Thrainer | """Computes if value is in the desired range.
|
455 | 7352d33b | Thomas Thrainer |
|
456 | 7352d33b | Thomas Thrainer | @param name: name of the parameter for which we perform the check
|
457 | 7352d33b | Thomas Thrainer | @param qualifier: a qualifier used in the error message (e.g. 'disk/1',
|
458 | 7352d33b | Thomas Thrainer | not just 'disk')
|
459 | 7352d33b | Thomas Thrainer | @param ispecs: dictionary containing min and max values
|
460 | 7352d33b | Thomas Thrainer | @param value: actual value that we want to use
|
461 | 7352d33b | Thomas Thrainer | @return: None or an error string
|
462 | 7352d33b | Thomas Thrainer |
|
463 | 7352d33b | Thomas Thrainer | """
|
464 | 7352d33b | Thomas Thrainer | if value in [None, constants.VALUE_AUTO]: |
465 | 7352d33b | Thomas Thrainer | return None |
466 | 7352d33b | Thomas Thrainer | max_v = ispecs[constants.ISPECS_MAX].get(name, value) |
467 | 7352d33b | Thomas Thrainer | min_v = ispecs[constants.ISPECS_MIN].get(name, value) |
468 | 7352d33b | Thomas Thrainer | if value > max_v or min_v > value: |
469 | 7352d33b | Thomas Thrainer | if qualifier:
|
470 | 7352d33b | Thomas Thrainer | fqn = "%s/%s" % (name, qualifier)
|
471 | 7352d33b | Thomas Thrainer | else:
|
472 | 7352d33b | Thomas Thrainer | fqn = name |
473 | 7352d33b | Thomas Thrainer | return ("%s value %s is not in range [%s, %s]" % |
474 | 7352d33b | Thomas Thrainer | (fqn, value, min_v, max_v)) |
475 | 7352d33b | Thomas Thrainer | return None |
476 | 7352d33b | Thomas Thrainer | |
477 | 7352d33b | Thomas Thrainer | |
478 | 5eacbcae | Thomas Thrainer | def ComputeIPolicySpecViolation(ipolicy, mem_size, cpu_count, disk_count, |
479 | 5eacbcae | Thomas Thrainer | nic_count, disk_sizes, spindle_use, |
480 | 5eacbcae | Thomas Thrainer | disk_template, |
481 | 5eacbcae | Thomas Thrainer | _compute_fn=_ComputeMinMaxSpec): |
482 | 7352d33b | Thomas Thrainer | """Verifies ipolicy against provided specs.
|
483 | 7352d33b | Thomas Thrainer |
|
484 | 7352d33b | Thomas Thrainer | @type ipolicy: dict
|
485 | 7352d33b | Thomas Thrainer | @param ipolicy: The ipolicy
|
486 | 7352d33b | Thomas Thrainer | @type mem_size: int
|
487 | 7352d33b | Thomas Thrainer | @param mem_size: The memory size
|
488 | 7352d33b | Thomas Thrainer | @type cpu_count: int
|
489 | 7352d33b | Thomas Thrainer | @param cpu_count: Used cpu cores
|
490 | 7352d33b | Thomas Thrainer | @type disk_count: int
|
491 | 7352d33b | Thomas Thrainer | @param disk_count: Number of disks used
|
492 | 7352d33b | Thomas Thrainer | @type nic_count: int
|
493 | 7352d33b | Thomas Thrainer | @param nic_count: Number of nics used
|
494 | 7352d33b | Thomas Thrainer | @type disk_sizes: list of ints
|
495 | 7352d33b | Thomas Thrainer | @param disk_sizes: Disk sizes of used disk (len must match C{disk_count})
|
496 | 7352d33b | Thomas Thrainer | @type spindle_use: int
|
497 | 7352d33b | Thomas Thrainer | @param spindle_use: The number of spindles this instance uses
|
498 | 7352d33b | Thomas Thrainer | @type disk_template: string
|
499 | 7352d33b | Thomas Thrainer | @param disk_template: The disk template of the instance
|
500 | 7352d33b | Thomas Thrainer | @param _compute_fn: The compute function (unittest only)
|
501 | 7352d33b | Thomas Thrainer | @return: A list of violations, or an empty list of no violations are found
|
502 | 7352d33b | Thomas Thrainer |
|
503 | 7352d33b | Thomas Thrainer | """
|
504 | 7352d33b | Thomas Thrainer | assert disk_count == len(disk_sizes) |
505 | 7352d33b | Thomas Thrainer | |
506 | 7352d33b | Thomas Thrainer | test_settings = [ |
507 | 7352d33b | Thomas Thrainer | (constants.ISPEC_MEM_SIZE, "", mem_size),
|
508 | 7352d33b | Thomas Thrainer | (constants.ISPEC_CPU_COUNT, "", cpu_count),
|
509 | 7352d33b | Thomas Thrainer | (constants.ISPEC_NIC_COUNT, "", nic_count),
|
510 | 7352d33b | Thomas Thrainer | (constants.ISPEC_SPINDLE_USE, "", spindle_use),
|
511 | 7352d33b | Thomas Thrainer | ] + [(constants.ISPEC_DISK_SIZE, str(idx), d)
|
512 | 7352d33b | Thomas Thrainer | for idx, d in enumerate(disk_sizes)] |
513 | 7352d33b | Thomas Thrainer | if disk_template != constants.DT_DISKLESS:
|
514 | 7352d33b | Thomas Thrainer | # This check doesn't make sense for diskless instances
|
515 | 7352d33b | Thomas Thrainer | test_settings.append((constants.ISPEC_DISK_COUNT, "", disk_count))
|
516 | 7352d33b | Thomas Thrainer | ret = [] |
517 | 7352d33b | Thomas Thrainer | allowed_dts = ipolicy[constants.IPOLICY_DTS] |
518 | 7352d33b | Thomas Thrainer | if disk_template not in allowed_dts: |
519 | 7352d33b | Thomas Thrainer | ret.append("Disk template %s is not allowed (allowed templates: %s)" %
|
520 | 7352d33b | Thomas Thrainer | (disk_template, utils.CommaJoin(allowed_dts))) |
521 | 7352d33b | Thomas Thrainer | |
522 | 7352d33b | Thomas Thrainer | min_errs = None
|
523 | 7352d33b | Thomas Thrainer | for minmax in ipolicy[constants.ISPECS_MINMAX]: |
524 | 7352d33b | Thomas Thrainer | errs = filter(None, |
525 | 7352d33b | Thomas Thrainer | (_compute_fn(name, qualifier, minmax, value) |
526 | 7352d33b | Thomas Thrainer | for (name, qualifier, value) in test_settings)) |
527 | 7352d33b | Thomas Thrainer | if min_errs is None or len(errs) < len(min_errs): |
528 | 7352d33b | Thomas Thrainer | min_errs = errs |
529 | 7352d33b | Thomas Thrainer | assert min_errs is not None |
530 | 7352d33b | Thomas Thrainer | return ret + min_errs
|
531 | 7352d33b | Thomas Thrainer | |
532 | 7352d33b | Thomas Thrainer | |
533 | 5eacbcae | Thomas Thrainer | def ComputeIPolicyInstanceViolation(ipolicy, instance, cfg, |
534 | 5eacbcae | Thomas Thrainer | _compute_fn=ComputeIPolicySpecViolation): |
535 | 7352d33b | Thomas Thrainer | """Compute if instance meets the specs of ipolicy.
|
536 | 7352d33b | Thomas Thrainer |
|
537 | 7352d33b | Thomas Thrainer | @type ipolicy: dict
|
538 | 7352d33b | Thomas Thrainer | @param ipolicy: The ipolicy to verify against
|
539 | 7352d33b | Thomas Thrainer | @type instance: L{objects.Instance}
|
540 | 7352d33b | Thomas Thrainer | @param instance: The instance to verify
|
541 | 7352d33b | Thomas Thrainer | @type cfg: L{config.ConfigWriter}
|
542 | 7352d33b | Thomas Thrainer | @param cfg: Cluster configuration
|
543 | 7352d33b | Thomas Thrainer | @param _compute_fn: The function to verify ipolicy (unittest only)
|
544 | 5eacbcae | Thomas Thrainer | @see: L{ComputeIPolicySpecViolation}
|
545 | 7352d33b | Thomas Thrainer |
|
546 | 7352d33b | Thomas Thrainer | """
|
547 | 7352d33b | Thomas Thrainer | be_full = cfg.GetClusterInfo().FillBE(instance) |
548 | 7352d33b | Thomas Thrainer | mem_size = be_full[constants.BE_MAXMEM] |
549 | 7352d33b | Thomas Thrainer | cpu_count = be_full[constants.BE_VCPUS] |
550 | 7352d33b | Thomas Thrainer | spindle_use = be_full[constants.BE_SPINDLE_USE] |
551 | 7352d33b | Thomas Thrainer | disk_count = len(instance.disks)
|
552 | 7352d33b | Thomas Thrainer | disk_sizes = [disk.size for disk in instance.disks] |
553 | 7352d33b | Thomas Thrainer | nic_count = len(instance.nics)
|
554 | 7352d33b | Thomas Thrainer | disk_template = instance.disk_template |
555 | 7352d33b | Thomas Thrainer | |
556 | 7352d33b | Thomas Thrainer | return _compute_fn(ipolicy, mem_size, cpu_count, disk_count, nic_count,
|
557 | 7352d33b | Thomas Thrainer | disk_sizes, spindle_use, disk_template) |
558 | 7352d33b | Thomas Thrainer | |
559 | 7352d33b | Thomas Thrainer | |
560 | 7352d33b | Thomas Thrainer | def _ComputeViolatingInstances(ipolicy, instances, cfg): |
561 | 7352d33b | Thomas Thrainer | """Computes a set of instances who violates given ipolicy.
|
562 | 7352d33b | Thomas Thrainer |
|
563 | 7352d33b | Thomas Thrainer | @param ipolicy: The ipolicy to verify
|
564 | 7352d33b | Thomas Thrainer | @type instances: L{objects.Instance}
|
565 | 7352d33b | Thomas Thrainer | @param instances: List of instances to verify
|
566 | 7352d33b | Thomas Thrainer | @type cfg: L{config.ConfigWriter}
|
567 | 7352d33b | Thomas Thrainer | @param cfg: Cluster configuration
|
568 | 7352d33b | Thomas Thrainer | @return: A frozenset of instance names violating the ipolicy
|
569 | 7352d33b | Thomas Thrainer |
|
570 | 7352d33b | Thomas Thrainer | """
|
571 | 7352d33b | Thomas Thrainer | return frozenset([inst.name for inst in instances |
572 | 5eacbcae | Thomas Thrainer | if ComputeIPolicyInstanceViolation(ipolicy, inst, cfg)])
|
573 | 7352d33b | Thomas Thrainer | |
574 | 7352d33b | Thomas Thrainer | |
575 | 5eacbcae | Thomas Thrainer | def ComputeNewInstanceViolations(old_ipolicy, new_ipolicy, instances, cfg): |
576 | 7352d33b | Thomas Thrainer | """Computes a set of any instances that would violate the new ipolicy.
|
577 | 7352d33b | Thomas Thrainer |
|
578 | 7352d33b | Thomas Thrainer | @param old_ipolicy: The current (still in-place) ipolicy
|
579 | 7352d33b | Thomas Thrainer | @param new_ipolicy: The new (to become) ipolicy
|
580 | 7352d33b | Thomas Thrainer | @param instances: List of instances to verify
|
581 | 7352d33b | Thomas Thrainer | @type cfg: L{config.ConfigWriter}
|
582 | 7352d33b | Thomas Thrainer | @param cfg: Cluster configuration
|
583 | 7352d33b | Thomas Thrainer | @return: A list of instances which violates the new ipolicy but
|
584 | 7352d33b | Thomas Thrainer | did not before
|
585 | 7352d33b | Thomas Thrainer |
|
586 | 7352d33b | Thomas Thrainer | """
|
587 | 7352d33b | Thomas Thrainer | return (_ComputeViolatingInstances(new_ipolicy, instances, cfg) -
|
588 | 7352d33b | Thomas Thrainer | _ComputeViolatingInstances(old_ipolicy, instances, cfg)) |
589 | 7352d33b | Thomas Thrainer | |
590 | 7352d33b | Thomas Thrainer | |
591 | 5eacbcae | Thomas Thrainer | def GetUpdatedParams(old_params, update_dict, |
592 | 7352d33b | Thomas Thrainer | use_default=True, use_none=False): |
593 | 7352d33b | Thomas Thrainer | """Return the new version of a parameter dictionary.
|
594 | 7352d33b | Thomas Thrainer |
|
595 | 7352d33b | Thomas Thrainer | @type old_params: dict
|
596 | 7352d33b | Thomas Thrainer | @param old_params: old parameters
|
597 | 7352d33b | Thomas Thrainer | @type update_dict: dict
|
598 | 7352d33b | Thomas Thrainer | @param update_dict: dict containing new parameter values, or
|
599 | 7352d33b | Thomas Thrainer | constants.VALUE_DEFAULT to reset the parameter to its default
|
600 | 7352d33b | Thomas Thrainer | value
|
601 | 7352d33b | Thomas Thrainer | @param use_default: boolean
|
602 | 7352d33b | Thomas Thrainer | @type use_default: whether to recognise L{constants.VALUE_DEFAULT}
|
603 | 7352d33b | Thomas Thrainer | values as 'to be deleted' values
|
604 | 7352d33b | Thomas Thrainer | @param use_none: boolean
|
605 | 7352d33b | Thomas Thrainer | @type use_none: whether to recognise C{None} values as 'to be
|
606 | 7352d33b | Thomas Thrainer | deleted' values
|
607 | 7352d33b | Thomas Thrainer | @rtype: dict
|
608 | 7352d33b | Thomas Thrainer | @return: the new parameter dictionary
|
609 | 7352d33b | Thomas Thrainer |
|
610 | 7352d33b | Thomas Thrainer | """
|
611 | 7352d33b | Thomas Thrainer | params_copy = copy.deepcopy(old_params) |
612 | 7352d33b | Thomas Thrainer | for key, val in update_dict.iteritems(): |
613 | 7352d33b | Thomas Thrainer | if ((use_default and val == constants.VALUE_DEFAULT) or |
614 | 7352d33b | Thomas Thrainer | (use_none and val is None)): |
615 | 7352d33b | Thomas Thrainer | try:
|
616 | 7352d33b | Thomas Thrainer | del params_copy[key]
|
617 | 7352d33b | Thomas Thrainer | except KeyError: |
618 | 7352d33b | Thomas Thrainer | pass
|
619 | 7352d33b | Thomas Thrainer | else:
|
620 | 7352d33b | Thomas Thrainer | params_copy[key] = val |
621 | 7352d33b | Thomas Thrainer | return params_copy
|
622 | 7352d33b | Thomas Thrainer | |
623 | 7352d33b | Thomas Thrainer | |
624 | 5eacbcae | Thomas Thrainer | def GetUpdatedIPolicy(old_ipolicy, new_ipolicy, group_policy=False): |
625 | 7352d33b | Thomas Thrainer | """Return the new version of an instance policy.
|
626 | 7352d33b | Thomas Thrainer |
|
627 | 7352d33b | Thomas Thrainer | @param group_policy: whether this policy applies to a group and thus
|
628 | 7352d33b | Thomas Thrainer | we should support removal of policy entries
|
629 | 7352d33b | Thomas Thrainer |
|
630 | 7352d33b | Thomas Thrainer | """
|
631 | 7352d33b | Thomas Thrainer | ipolicy = copy.deepcopy(old_ipolicy) |
632 | 7352d33b | Thomas Thrainer | for key, value in new_ipolicy.items(): |
633 | 7352d33b | Thomas Thrainer | if key not in constants.IPOLICY_ALL_KEYS: |
634 | 7352d33b | Thomas Thrainer | raise errors.OpPrereqError("Invalid key in new ipolicy: %s" % key, |
635 | 7352d33b | Thomas Thrainer | errors.ECODE_INVAL) |
636 | 7352d33b | Thomas Thrainer | if (not value or value == [constants.VALUE_DEFAULT] or |
637 | 7352d33b | Thomas Thrainer | value == constants.VALUE_DEFAULT): |
638 | 7352d33b | Thomas Thrainer | if group_policy:
|
639 | 7352d33b | Thomas Thrainer | if key in ipolicy: |
640 | 7352d33b | Thomas Thrainer | del ipolicy[key]
|
641 | 7352d33b | Thomas Thrainer | else:
|
642 | 7352d33b | Thomas Thrainer | raise errors.OpPrereqError("Can't unset ipolicy attribute '%s'" |
643 | 7352d33b | Thomas Thrainer | " on the cluster'" % key,
|
644 | 7352d33b | Thomas Thrainer | errors.ECODE_INVAL) |
645 | 7352d33b | Thomas Thrainer | else:
|
646 | 7352d33b | Thomas Thrainer | if key in constants.IPOLICY_PARAMETERS: |
647 | 7352d33b | Thomas Thrainer | # FIXME: we assume all such values are float
|
648 | 7352d33b | Thomas Thrainer | try:
|
649 | 7352d33b | Thomas Thrainer | ipolicy[key] = float(value)
|
650 | 7352d33b | Thomas Thrainer | except (TypeError, ValueError), err: |
651 | 7352d33b | Thomas Thrainer | raise errors.OpPrereqError("Invalid value for attribute" |
652 | 7352d33b | Thomas Thrainer | " '%s': '%s', error: %s" %
|
653 | 7352d33b | Thomas Thrainer | (key, value, err), errors.ECODE_INVAL) |
654 | 7352d33b | Thomas Thrainer | elif key == constants.ISPECS_MINMAX:
|
655 | 7352d33b | Thomas Thrainer | for minmax in value: |
656 | 7352d33b | Thomas Thrainer | for k in minmax.keys(): |
657 | 7352d33b | Thomas Thrainer | utils.ForceDictType(minmax[k], constants.ISPECS_PARAMETER_TYPES) |
658 | 7352d33b | Thomas Thrainer | ipolicy[key] = value |
659 | 7352d33b | Thomas Thrainer | elif key == constants.ISPECS_STD:
|
660 | 7352d33b | Thomas Thrainer | if group_policy:
|
661 | 7352d33b | Thomas Thrainer | msg = "%s cannot appear in group instance specs" % key
|
662 | 7352d33b | Thomas Thrainer | raise errors.OpPrereqError(msg, errors.ECODE_INVAL)
|
663 | 5eacbcae | Thomas Thrainer | ipolicy[key] = GetUpdatedParams(old_ipolicy.get(key, {}), value, |
664 | 5eacbcae | Thomas Thrainer | use_none=False, use_default=False) |
665 | 7352d33b | Thomas Thrainer | utils.ForceDictType(ipolicy[key], constants.ISPECS_PARAMETER_TYPES) |
666 | 7352d33b | Thomas Thrainer | else:
|
667 | 7352d33b | Thomas Thrainer | # FIXME: we assume all others are lists; this should be redone
|
668 | 7352d33b | Thomas Thrainer | # in a nicer way
|
669 | 7352d33b | Thomas Thrainer | ipolicy[key] = list(value)
|
670 | 7352d33b | Thomas Thrainer | try:
|
671 | 7352d33b | Thomas Thrainer | objects.InstancePolicy.CheckParameterSyntax(ipolicy, not group_policy)
|
672 | 7352d33b | Thomas Thrainer | except errors.ConfigurationError, err:
|
673 | 7352d33b | Thomas Thrainer | raise errors.OpPrereqError("Invalid instance policy: %s" % err, |
674 | 7352d33b | Thomas Thrainer | errors.ECODE_INVAL) |
675 | 7352d33b | Thomas Thrainer | return ipolicy
|
676 | 7352d33b | Thomas Thrainer | |
677 | 7352d33b | Thomas Thrainer | |
678 | 5eacbcae | Thomas Thrainer | def AnnotateDiskParams(instance, devs, cfg): |
679 | 7352d33b | Thomas Thrainer | """Little helper wrapper to the rpc annotation method.
|
680 | 7352d33b | Thomas Thrainer |
|
681 | 7352d33b | Thomas Thrainer | @param instance: The instance object
|
682 | 7352d33b | Thomas Thrainer | @type devs: List of L{objects.Disk}
|
683 | 7352d33b | Thomas Thrainer | @param devs: The root devices (not any of its children!)
|
684 | 7352d33b | Thomas Thrainer | @param cfg: The config object
|
685 | 7352d33b | Thomas Thrainer | @returns The annotated disk copies
|
686 | 7352d33b | Thomas Thrainer | @see L{rpc.AnnotateDiskParams}
|
687 | 7352d33b | Thomas Thrainer |
|
688 | 7352d33b | Thomas Thrainer | """
|
689 | 7352d33b | Thomas Thrainer | return rpc.AnnotateDiskParams(instance.disk_template, devs,
|
690 | 7352d33b | Thomas Thrainer | cfg.GetInstanceDiskParams(instance)) |
691 | 7352d33b | Thomas Thrainer | |
692 | 7352d33b | Thomas Thrainer | |
693 | 5eacbcae | Thomas Thrainer | def SupportsOob(cfg, node): |
694 | 7352d33b | Thomas Thrainer | """Tells if node supports OOB.
|
695 | 7352d33b | Thomas Thrainer |
|
696 | 7352d33b | Thomas Thrainer | @type cfg: L{config.ConfigWriter}
|
697 | 7352d33b | Thomas Thrainer | @param cfg: The cluster configuration
|
698 | 7352d33b | Thomas Thrainer | @type node: L{objects.Node}
|
699 | 7352d33b | Thomas Thrainer | @param node: The node
|
700 | 7352d33b | Thomas Thrainer | @return: The OOB script if supported or an empty string otherwise
|
701 | 7352d33b | Thomas Thrainer |
|
702 | 7352d33b | Thomas Thrainer | """
|
703 | 7352d33b | Thomas Thrainer | return cfg.GetNdParams(node)[constants.ND_OOB_PROGRAM]
|
704 | 7352d33b | Thomas Thrainer | |
705 | 7352d33b | Thomas Thrainer | |
706 | 7352d33b | Thomas Thrainer | def _UpdateAndVerifySubDict(base, updates, type_check): |
707 | 7352d33b | Thomas Thrainer | """Updates and verifies a dict with sub dicts of the same type.
|
708 | 7352d33b | Thomas Thrainer |
|
709 | 7352d33b | Thomas Thrainer | @param base: The dict with the old data
|
710 | 7352d33b | Thomas Thrainer | @param updates: The dict with the new data
|
711 | 7352d33b | Thomas Thrainer | @param type_check: Dict suitable to ForceDictType to verify correct types
|
712 | 7352d33b | Thomas Thrainer | @returns: A new dict with updated and verified values
|
713 | 7352d33b | Thomas Thrainer |
|
714 | 7352d33b | Thomas Thrainer | """
|
715 | 7352d33b | Thomas Thrainer | def fn(old, value): |
716 | 5eacbcae | Thomas Thrainer | new = GetUpdatedParams(old, value) |
717 | 7352d33b | Thomas Thrainer | utils.ForceDictType(new, type_check) |
718 | 7352d33b | Thomas Thrainer | return new
|
719 | 7352d33b | Thomas Thrainer | |
720 | 7352d33b | Thomas Thrainer | ret = copy.deepcopy(base) |
721 | 7352d33b | Thomas Thrainer | ret.update(dict((key, fn(base.get(key, {}), value))
|
722 | 7352d33b | Thomas Thrainer | for key, value in updates.items())) |
723 | 7352d33b | Thomas Thrainer | return ret
|
724 | 7352d33b | Thomas Thrainer | |
725 | 7352d33b | Thomas Thrainer | |
726 | 7352d33b | Thomas Thrainer | def _FilterVmNodes(lu, nodenames): |
727 | 7352d33b | Thomas Thrainer | """Filters out non-vm_capable nodes from a list.
|
728 | 7352d33b | Thomas Thrainer |
|
729 | 7352d33b | Thomas Thrainer | @type lu: L{LogicalUnit}
|
730 | 7352d33b | Thomas Thrainer | @param lu: the logical unit for which we check
|
731 | 7352d33b | Thomas Thrainer | @type nodenames: list
|
732 | 7352d33b | Thomas Thrainer | @param nodenames: the list of nodes on which we should check
|
733 | 7352d33b | Thomas Thrainer | @rtype: list
|
734 | 7352d33b | Thomas Thrainer | @return: the list of vm-capable nodes
|
735 | 7352d33b | Thomas Thrainer |
|
736 | 7352d33b | Thomas Thrainer | """
|
737 | 7352d33b | Thomas Thrainer | vm_nodes = frozenset(lu.cfg.GetNonVmCapableNodeList())
|
738 | 7352d33b | Thomas Thrainer | return [name for name in nodenames if name not in vm_nodes] |
739 | f380d53c | Thomas Thrainer | |
740 | f380d53c | Thomas Thrainer | |
741 | 5eacbcae | Thomas Thrainer | def GetDefaultIAllocator(cfg, ialloc): |
742 | f380d53c | Thomas Thrainer | """Decides on which iallocator to use.
|
743 | f380d53c | Thomas Thrainer |
|
744 | f380d53c | Thomas Thrainer | @type cfg: L{config.ConfigWriter}
|
745 | f380d53c | Thomas Thrainer | @param cfg: Cluster configuration object
|
746 | f380d53c | Thomas Thrainer | @type ialloc: string or None
|
747 | f380d53c | Thomas Thrainer | @param ialloc: Iallocator specified in opcode
|
748 | f380d53c | Thomas Thrainer | @rtype: string
|
749 | f380d53c | Thomas Thrainer | @return: Iallocator name
|
750 | f380d53c | Thomas Thrainer |
|
751 | f380d53c | Thomas Thrainer | """
|
752 | f380d53c | Thomas Thrainer | if not ialloc: |
753 | f380d53c | Thomas Thrainer | # Use default iallocator
|
754 | f380d53c | Thomas Thrainer | ialloc = cfg.GetDefaultIAllocator() |
755 | f380d53c | Thomas Thrainer | |
756 | f380d53c | Thomas Thrainer | if not ialloc: |
757 | f380d53c | Thomas Thrainer | raise errors.OpPrereqError("No iallocator was specified, neither in the" |
758 | f380d53c | Thomas Thrainer | " opcode nor as a cluster-wide default",
|
759 | f380d53c | Thomas Thrainer | errors.ECODE_INVAL) |
760 | f380d53c | Thomas Thrainer | |
761 | f380d53c | Thomas Thrainer | return ialloc
|
762 | f380d53c | Thomas Thrainer | |
763 | f380d53c | Thomas Thrainer | |
764 | 5eacbcae | Thomas Thrainer | def CheckInstancesNodeGroups(cfg, instances, owned_groups, owned_nodes, |
765 | 5eacbcae | Thomas Thrainer | cur_group_uuid): |
766 | f380d53c | Thomas Thrainer | """Checks if node groups for locked instances are still correct.
|
767 | f380d53c | Thomas Thrainer |
|
768 | f380d53c | Thomas Thrainer | @type cfg: L{config.ConfigWriter}
|
769 | f380d53c | Thomas Thrainer | @param cfg: Cluster configuration
|
770 | f380d53c | Thomas Thrainer | @type instances: dict; string as key, L{objects.Instance} as value
|
771 | f380d53c | Thomas Thrainer | @param instances: Dictionary, instance name as key, instance object as value
|
772 | f380d53c | Thomas Thrainer | @type owned_groups: iterable of string
|
773 | f380d53c | Thomas Thrainer | @param owned_groups: List of owned groups
|
774 | f380d53c | Thomas Thrainer | @type owned_nodes: iterable of string
|
775 | f380d53c | Thomas Thrainer | @param owned_nodes: List of owned nodes
|
776 | f380d53c | Thomas Thrainer | @type cur_group_uuid: string or None
|
777 | f380d53c | Thomas Thrainer | @param cur_group_uuid: Optional group UUID to check against instance's groups
|
778 | f380d53c | Thomas Thrainer |
|
779 | f380d53c | Thomas Thrainer | """
|
780 | f380d53c | Thomas Thrainer | for (name, inst) in instances.items(): |
781 | f380d53c | Thomas Thrainer | assert owned_nodes.issuperset(inst.all_nodes), \
|
782 | f380d53c | Thomas Thrainer | "Instance %s's nodes changed while we kept the lock" % name
|
783 | f380d53c | Thomas Thrainer | |
784 | 5eacbcae | Thomas Thrainer | inst_groups = CheckInstanceNodeGroups(cfg, name, owned_groups) |
785 | f380d53c | Thomas Thrainer | |
786 | f380d53c | Thomas Thrainer | assert cur_group_uuid is None or cur_group_uuid in inst_groups, \ |
787 | f380d53c | Thomas Thrainer | "Instance %s has no node in group %s" % (name, cur_group_uuid)
|
788 | f380d53c | Thomas Thrainer | |
789 | f380d53c | Thomas Thrainer | |
790 | 5eacbcae | Thomas Thrainer | def CheckInstanceNodeGroups(cfg, instance_name, owned_groups, |
791 | 5eacbcae | Thomas Thrainer | primary_only=False):
|
792 | f380d53c | Thomas Thrainer | """Checks if the owned node groups are still correct for an instance.
|
793 | f380d53c | Thomas Thrainer |
|
794 | f380d53c | Thomas Thrainer | @type cfg: L{config.ConfigWriter}
|
795 | f380d53c | Thomas Thrainer | @param cfg: The cluster configuration
|
796 | f380d53c | Thomas Thrainer | @type instance_name: string
|
797 | f380d53c | Thomas Thrainer | @param instance_name: Instance name
|
798 | f380d53c | Thomas Thrainer | @type owned_groups: set or frozenset
|
799 | f380d53c | Thomas Thrainer | @param owned_groups: List of currently owned node groups
|
800 | f380d53c | Thomas Thrainer | @type primary_only: boolean
|
801 | f380d53c | Thomas Thrainer | @param primary_only: Whether to check node groups for only the primary node
|
802 | f380d53c | Thomas Thrainer |
|
803 | f380d53c | Thomas Thrainer | """
|
804 | f380d53c | Thomas Thrainer | inst_groups = cfg.GetInstanceNodeGroups(instance_name, primary_only) |
805 | f380d53c | Thomas Thrainer | |
806 | f380d53c | Thomas Thrainer | if not owned_groups.issuperset(inst_groups): |
807 | f380d53c | Thomas Thrainer | raise errors.OpPrereqError("Instance %s's node groups changed since" |
808 | f380d53c | Thomas Thrainer | " locks were acquired, current groups are"
|
809 | f380d53c | Thomas Thrainer | " are '%s', owning groups '%s'; retry the"
|
810 | f380d53c | Thomas Thrainer | " operation" %
|
811 | f380d53c | Thomas Thrainer | (instance_name, |
812 | f380d53c | Thomas Thrainer | utils.CommaJoin(inst_groups), |
813 | f380d53c | Thomas Thrainer | utils.CommaJoin(owned_groups)), |
814 | f380d53c | Thomas Thrainer | errors.ECODE_STATE) |
815 | f380d53c | Thomas Thrainer | |
816 | f380d53c | Thomas Thrainer | return inst_groups
|
817 | f380d53c | Thomas Thrainer | |
818 | f380d53c | Thomas Thrainer | |
819 | 5eacbcae | Thomas Thrainer | def LoadNodeEvacResult(lu, alloc_result, early_release, use_nodes): |
820 | f380d53c | Thomas Thrainer | """Unpacks the result of change-group and node-evacuate iallocator requests.
|
821 | f380d53c | Thomas Thrainer |
|
822 | f380d53c | Thomas Thrainer | Iallocator modes L{constants.IALLOCATOR_MODE_NODE_EVAC} and
|
823 | f380d53c | Thomas Thrainer | L{constants.IALLOCATOR_MODE_CHG_GROUP}.
|
824 | f380d53c | Thomas Thrainer |
|
825 | f380d53c | Thomas Thrainer | @type lu: L{LogicalUnit}
|
826 | f380d53c | Thomas Thrainer | @param lu: Logical unit instance
|
827 | f380d53c | Thomas Thrainer | @type alloc_result: tuple/list
|
828 | f380d53c | Thomas Thrainer | @param alloc_result: Result from iallocator
|
829 | f380d53c | Thomas Thrainer | @type early_release: bool
|
830 | f380d53c | Thomas Thrainer | @param early_release: Whether to release locks early if possible
|
831 | f380d53c | Thomas Thrainer | @type use_nodes: bool
|
832 | f380d53c | Thomas Thrainer | @param use_nodes: Whether to display node names instead of groups
|
833 | f380d53c | Thomas Thrainer |
|
834 | f380d53c | Thomas Thrainer | """
|
835 | f380d53c | Thomas Thrainer | (moved, failed, jobs) = alloc_result |
836 | f380d53c | Thomas Thrainer | |
837 | f380d53c | Thomas Thrainer | if failed:
|
838 | f380d53c | Thomas Thrainer | failreason = utils.CommaJoin("%s (%s)" % (name, reason)
|
839 | f380d53c | Thomas Thrainer | for (name, reason) in failed) |
840 | f380d53c | Thomas Thrainer | lu.LogWarning("Unable to evacuate instances %s", failreason)
|
841 | f380d53c | Thomas Thrainer | raise errors.OpExecError("Unable to evacuate instances %s" % failreason) |
842 | f380d53c | Thomas Thrainer | |
843 | f380d53c | Thomas Thrainer | if moved:
|
844 | f380d53c | Thomas Thrainer | lu.LogInfo("Instances to be moved: %s",
|
845 | f380d53c | Thomas Thrainer | utils.CommaJoin("%s (to %s)" %
|
846 | f380d53c | Thomas Thrainer | (name, _NodeEvacDest(use_nodes, group, nodes)) |
847 | f380d53c | Thomas Thrainer | for (name, group, nodes) in moved)) |
848 | f380d53c | Thomas Thrainer | |
849 | f380d53c | Thomas Thrainer | return [map(compat.partial(_SetOpEarlyRelease, early_release), |
850 | f380d53c | Thomas Thrainer | map(opcodes.OpCode.LoadOpCode, ops))
|
851 | f380d53c | Thomas Thrainer | for ops in jobs] |
852 | f380d53c | Thomas Thrainer | |
853 | f380d53c | Thomas Thrainer | |
854 | f380d53c | Thomas Thrainer | def _NodeEvacDest(use_nodes, group, nodes): |
855 | f380d53c | Thomas Thrainer | """Returns group or nodes depending on caller's choice.
|
856 | f380d53c | Thomas Thrainer |
|
857 | f380d53c | Thomas Thrainer | """
|
858 | f380d53c | Thomas Thrainer | if use_nodes:
|
859 | f380d53c | Thomas Thrainer | return utils.CommaJoin(nodes)
|
860 | f380d53c | Thomas Thrainer | else:
|
861 | f380d53c | Thomas Thrainer | return group
|
862 | f380d53c | Thomas Thrainer | |
863 | f380d53c | Thomas Thrainer | |
864 | f380d53c | Thomas Thrainer | def _SetOpEarlyRelease(early_release, op): |
865 | f380d53c | Thomas Thrainer | """Sets C{early_release} flag on opcodes if available.
|
866 | f380d53c | Thomas Thrainer |
|
867 | f380d53c | Thomas Thrainer | """
|
868 | f380d53c | Thomas Thrainer | try:
|
869 | f380d53c | Thomas Thrainer | op.early_release = early_release |
870 | f380d53c | Thomas Thrainer | except AttributeError: |
871 | f380d53c | Thomas Thrainer | assert not isinstance(op, opcodes.OpInstanceReplaceDisks) |
872 | f380d53c | Thomas Thrainer | |
873 | f380d53c | Thomas Thrainer | return op
|
874 | f380d53c | Thomas Thrainer | |
875 | f380d53c | Thomas Thrainer | |
876 | 5eacbcae | Thomas Thrainer | def MapInstanceDisksToNodes(instances): |
877 | f380d53c | Thomas Thrainer | """Creates a map from (node, volume) to instance name.
|
878 | f380d53c | Thomas Thrainer |
|
879 | f380d53c | Thomas Thrainer | @type instances: list of L{objects.Instance}
|
880 | f380d53c | Thomas Thrainer | @rtype: dict; tuple of (node name, volume name) as key, instance name as value
|
881 | f380d53c | Thomas Thrainer |
|
882 | f380d53c | Thomas Thrainer | """
|
883 | f380d53c | Thomas Thrainer | return dict(((node, vol), inst.name) |
884 | f380d53c | Thomas Thrainer | for inst in instances |
885 | f380d53c | Thomas Thrainer | for (node, vols) in inst.MapLVsByNode().items() |
886 | f380d53c | Thomas Thrainer | for vol in vols) |
887 | 31b836b8 | Thomas Thrainer | |
888 | 31b836b8 | Thomas Thrainer | |
889 | 5eacbcae | Thomas Thrainer | def CheckParamsNotGlobal(params, glob_pars, kind, bad_levels, good_levels): |
890 | 31b836b8 | Thomas Thrainer | """Make sure that none of the given paramters is global.
|
891 | 31b836b8 | Thomas Thrainer |
|
892 | 31b836b8 | Thomas Thrainer | If a global parameter is found, an L{errors.OpPrereqError} exception is
|
893 | 31b836b8 | Thomas Thrainer | raised. This is used to avoid setting global parameters for individual nodes.
|
894 | 31b836b8 | Thomas Thrainer |
|
895 | 31b836b8 | Thomas Thrainer | @type params: dictionary
|
896 | 31b836b8 | Thomas Thrainer | @param params: Parameters to check
|
897 | 31b836b8 | Thomas Thrainer | @type glob_pars: dictionary
|
898 | 31b836b8 | Thomas Thrainer | @param glob_pars: Forbidden parameters
|
899 | 31b836b8 | Thomas Thrainer | @type kind: string
|
900 | 31b836b8 | Thomas Thrainer | @param kind: Kind of parameters (e.g. "node")
|
901 | 31b836b8 | Thomas Thrainer | @type bad_levels: string
|
902 | 31b836b8 | Thomas Thrainer | @param bad_levels: Level(s) at which the parameters are forbidden (e.g.
|
903 | 31b836b8 | Thomas Thrainer | "instance")
|
904 | 31b836b8 | Thomas Thrainer | @type good_levels: strings
|
905 | 31b836b8 | Thomas Thrainer | @param good_levels: Level(s) at which the parameters are allowed (e.g.
|
906 | 31b836b8 | Thomas Thrainer | "cluster or group")
|
907 | 31b836b8 | Thomas Thrainer |
|
908 | 31b836b8 | Thomas Thrainer | """
|
909 | 31b836b8 | Thomas Thrainer | used_globals = glob_pars.intersection(params) |
910 | 31b836b8 | Thomas Thrainer | if used_globals:
|
911 | 31b836b8 | Thomas Thrainer | msg = ("The following %s parameters are global and cannot"
|
912 | 31b836b8 | Thomas Thrainer | " be customized at %s level, please modify them at"
|
913 | 31b836b8 | Thomas Thrainer | " %s level: %s" %
|
914 | 31b836b8 | Thomas Thrainer | (kind, bad_levels, good_levels, utils.CommaJoin(used_globals))) |
915 | 31b836b8 | Thomas Thrainer | raise errors.OpPrereqError(msg, errors.ECODE_INVAL)
|
916 | 31b836b8 | Thomas Thrainer | |
917 | 31b836b8 | Thomas Thrainer | |
918 | 5eacbcae | Thomas Thrainer | def IsExclusiveStorageEnabledNode(cfg, node): |
919 | 31b836b8 | Thomas Thrainer | """Whether exclusive_storage is in effect for the given node.
|
920 | 31b836b8 | Thomas Thrainer |
|
921 | 31b836b8 | Thomas Thrainer | @type cfg: L{config.ConfigWriter}
|
922 | 31b836b8 | Thomas Thrainer | @param cfg: The cluster configuration
|
923 | 31b836b8 | Thomas Thrainer | @type node: L{objects.Node}
|
924 | 31b836b8 | Thomas Thrainer | @param node: The node
|
925 | 31b836b8 | Thomas Thrainer | @rtype: bool
|
926 | 31b836b8 | Thomas Thrainer | @return: The effective value of exclusive_storage
|
927 | 31b836b8 | Thomas Thrainer |
|
928 | 31b836b8 | Thomas Thrainer | """
|
929 | 31b836b8 | Thomas Thrainer | return cfg.GetNdParams(node)[constants.ND_EXCLUSIVE_STORAGE]
|
930 | 31b836b8 | Thomas Thrainer | |
931 | 31b836b8 | Thomas Thrainer | |
932 | 5eacbcae | Thomas Thrainer | def CheckInstanceState(lu, instance, req_states, msg=None): |
933 | 31b836b8 | Thomas Thrainer | """Ensure that an instance is in one of the required states.
|
934 | 31b836b8 | Thomas Thrainer |
|
935 | 31b836b8 | Thomas Thrainer | @param lu: the LU on behalf of which we make the check
|
936 | 31b836b8 | Thomas Thrainer | @param instance: the instance to check
|
937 | 31b836b8 | Thomas Thrainer | @param msg: if passed, should be a message to replace the default one
|
938 | 31b836b8 | Thomas Thrainer | @raise errors.OpPrereqError: if the instance is not in the required state
|
939 | 31b836b8 | Thomas Thrainer |
|
940 | 31b836b8 | Thomas Thrainer | """
|
941 | 31b836b8 | Thomas Thrainer | if msg is None: |
942 | 31b836b8 | Thomas Thrainer | msg = ("can't use instance from outside %s states" %
|
943 | 31b836b8 | Thomas Thrainer | utils.CommaJoin(req_states)) |
944 | 31b836b8 | Thomas Thrainer | if instance.admin_state not in req_states: |
945 | 31b836b8 | Thomas Thrainer | raise errors.OpPrereqError("Instance '%s' is marked to be %s, %s" % |
946 | 31b836b8 | Thomas Thrainer | (instance.name, instance.admin_state, msg), |
947 | 31b836b8 | Thomas Thrainer | errors.ECODE_STATE) |
948 | 31b836b8 | Thomas Thrainer | |
949 | 31b836b8 | Thomas Thrainer | if constants.ADMINST_UP not in req_states: |
950 | 31b836b8 | Thomas Thrainer | pnode = instance.primary_node |
951 | 31b836b8 | Thomas Thrainer | if not lu.cfg.GetNodeInfo(pnode).offline: |
952 | 31b836b8 | Thomas Thrainer | ins_l = lu.rpc.call_instance_list([pnode], [instance.hypervisor])[pnode] |
953 | 31b836b8 | Thomas Thrainer | ins_l.Raise("Can't contact node %s for instance information" % pnode,
|
954 | 31b836b8 | Thomas Thrainer | prereq=True, ecode=errors.ECODE_ENVIRON)
|
955 | 31b836b8 | Thomas Thrainer | if instance.name in ins_l.payload: |
956 | 31b836b8 | Thomas Thrainer | raise errors.OpPrereqError("Instance %s is running, %s" % |
957 | 31b836b8 | Thomas Thrainer | (instance.name, msg), errors.ECODE_STATE) |
958 | 31b836b8 | Thomas Thrainer | else:
|
959 | 31b836b8 | Thomas Thrainer | lu.LogWarning("Primary node offline, ignoring check that instance"
|
960 | 31b836b8 | Thomas Thrainer | " is down")
|
961 | 31b836b8 | Thomas Thrainer | |
962 | 31b836b8 | Thomas Thrainer | |
963 | 5eacbcae | Thomas Thrainer | def CheckIAllocatorOrNode(lu, iallocator_slot, node_slot): |
964 | 31b836b8 | Thomas Thrainer | """Check the sanity of iallocator and node arguments and use the
|
965 | 31b836b8 | Thomas Thrainer | cluster-wide iallocator if appropriate.
|
966 | 31b836b8 | Thomas Thrainer |
|
967 | 31b836b8 | Thomas Thrainer | Check that at most one of (iallocator, node) is specified. If none is
|
968 | 31b836b8 | Thomas Thrainer | specified, or the iallocator is L{constants.DEFAULT_IALLOCATOR_SHORTCUT},
|
969 | 31b836b8 | Thomas Thrainer | then the LU's opcode's iallocator slot is filled with the cluster-wide
|
970 | 31b836b8 | Thomas Thrainer | default iallocator.
|
971 | 31b836b8 | Thomas Thrainer |
|
972 | 31b836b8 | Thomas Thrainer | @type iallocator_slot: string
|
973 | 31b836b8 | Thomas Thrainer | @param iallocator_slot: the name of the opcode iallocator slot
|
974 | 31b836b8 | Thomas Thrainer | @type node_slot: string
|
975 | 31b836b8 | Thomas Thrainer | @param node_slot: the name of the opcode target node slot
|
976 | 31b836b8 | Thomas Thrainer |
|
977 | 31b836b8 | Thomas Thrainer | """
|
978 | 31b836b8 | Thomas Thrainer | node = getattr(lu.op, node_slot, None) |
979 | 31b836b8 | Thomas Thrainer | ialloc = getattr(lu.op, iallocator_slot, None) |
980 | 31b836b8 | Thomas Thrainer | if node == []:
|
981 | 31b836b8 | Thomas Thrainer | node = None
|
982 | 31b836b8 | Thomas Thrainer | |
983 | 31b836b8 | Thomas Thrainer | if node is not None and ialloc is not None: |
984 | 31b836b8 | Thomas Thrainer | raise errors.OpPrereqError("Do not specify both, iallocator and node", |
985 | 31b836b8 | Thomas Thrainer | errors.ECODE_INVAL) |
986 | 31b836b8 | Thomas Thrainer | elif ((node is None and ialloc is None) or |
987 | 31b836b8 | Thomas Thrainer | ialloc == constants.DEFAULT_IALLOCATOR_SHORTCUT): |
988 | 31b836b8 | Thomas Thrainer | default_iallocator = lu.cfg.GetDefaultIAllocator() |
989 | 31b836b8 | Thomas Thrainer | if default_iallocator:
|
990 | 31b836b8 | Thomas Thrainer | setattr(lu.op, iallocator_slot, default_iallocator)
|
991 | 31b836b8 | Thomas Thrainer | else:
|
992 | 31b836b8 | Thomas Thrainer | raise errors.OpPrereqError("No iallocator or node given and no" |
993 | 31b836b8 | Thomas Thrainer | " cluster-wide default iallocator found;"
|
994 | 31b836b8 | Thomas Thrainer | " please specify either an iallocator or a"
|
995 | 31b836b8 | Thomas Thrainer | " node, or set a cluster-wide default"
|
996 | 31b836b8 | Thomas Thrainer | " iallocator", errors.ECODE_INVAL)
|
997 | 31b836b8 | Thomas Thrainer | |
998 | 31b836b8 | Thomas Thrainer | |
999 | 5eacbcae | Thomas Thrainer | def FindFaultyInstanceDisks(cfg, rpc_runner, instance, node_name, prereq): |
1000 | 31b836b8 | Thomas Thrainer | faulty = [] |
1001 | 31b836b8 | Thomas Thrainer | |
1002 | 31b836b8 | Thomas Thrainer | for dev in instance.disks: |
1003 | 31b836b8 | Thomas Thrainer | cfg.SetDiskID(dev, node_name) |
1004 | 31b836b8 | Thomas Thrainer | |
1005 | 22b7f6f8 | Thomas Thrainer | result = rpc_runner.call_blockdev_getmirrorstatus(node_name, |
1006 | 22b7f6f8 | Thomas Thrainer | (instance.disks, |
1007 | 22b7f6f8 | Thomas Thrainer | instance)) |
1008 | 31b836b8 | Thomas Thrainer | result.Raise("Failed to get disk status from node %s" % node_name,
|
1009 | 31b836b8 | Thomas Thrainer | prereq=prereq, ecode=errors.ECODE_ENVIRON) |
1010 | 31b836b8 | Thomas Thrainer | |
1011 | 31b836b8 | Thomas Thrainer | for idx, bdev_status in enumerate(result.payload): |
1012 | 31b836b8 | Thomas Thrainer | if bdev_status and bdev_status.ldisk_status == constants.LDS_FAULTY: |
1013 | 31b836b8 | Thomas Thrainer | faulty.append(idx) |
1014 | 31b836b8 | Thomas Thrainer | |
1015 | 31b836b8 | Thomas Thrainer | return faulty
|
1016 | 22b7f6f8 | Thomas Thrainer | |
1017 | 22b7f6f8 | Thomas Thrainer | |
1018 | 5eacbcae | Thomas Thrainer | def CheckNodeOnline(lu, node, msg=None): |
1019 | 22b7f6f8 | Thomas Thrainer | """Ensure that a given node is online.
|
1020 | 22b7f6f8 | Thomas Thrainer |
|
1021 | 22b7f6f8 | Thomas Thrainer | @param lu: the LU on behalf of which we make the check
|
1022 | 22b7f6f8 | Thomas Thrainer | @param node: the node to check
|
1023 | 22b7f6f8 | Thomas Thrainer | @param msg: if passed, should be a message to replace the default one
|
1024 | 22b7f6f8 | Thomas Thrainer | @raise errors.OpPrereqError: if the node is offline
|
1025 | 22b7f6f8 | Thomas Thrainer |
|
1026 | 22b7f6f8 | Thomas Thrainer | """
|
1027 | 22b7f6f8 | Thomas Thrainer | if msg is None: |
1028 | 22b7f6f8 | Thomas Thrainer | msg = "Can't use offline node"
|
1029 | 22b7f6f8 | Thomas Thrainer | if lu.cfg.GetNodeInfo(node).offline:
|
1030 | 22b7f6f8 | Thomas Thrainer | raise errors.OpPrereqError("%s: %s" % (msg, node), errors.ECODE_STATE) |