root / lib / mcpu.py @ d3ce528b
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2 | a8083063 | Iustin Pop | #
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3 | a8083063 | Iustin Pop | |
4 | a8083063 | Iustin Pop | # Copyright (C) 2006, 2007 Google Inc.
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5 | a8083063 | Iustin Pop | #
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6 | a8083063 | Iustin Pop | # This program is free software; you can redistribute it and/or modify
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7 | a8083063 | Iustin Pop | # it under the terms of the GNU General Public License as published by
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8 | a8083063 | Iustin Pop | # the Free Software Foundation; either version 2 of the License, or
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9 | a8083063 | Iustin Pop | # (at your option) any later version.
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10 | a8083063 | Iustin Pop | #
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11 | a8083063 | Iustin Pop | # This program is distributed in the hope that it will be useful, but
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12 | a8083063 | Iustin Pop | # WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | a8083063 | Iustin Pop | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | a8083063 | Iustin Pop | # General Public License for more details.
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15 | a8083063 | Iustin Pop | #
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16 | a8083063 | Iustin Pop | # You should have received a copy of the GNU General Public License
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17 | a8083063 | Iustin Pop | # along with this program; if not, write to the Free Software
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18 | a8083063 | Iustin Pop | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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19 | a8083063 | Iustin Pop | # 02110-1301, USA.
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20 | a8083063 | Iustin Pop | |
21 | a8083063 | Iustin Pop | |
22 | a8083063 | Iustin Pop | """Module implementing the logic behind the cluster operations
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23 | a8083063 | Iustin Pop |
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24 | a8083063 | Iustin Pop | This module implements the logic for doing operations in the cluster. There
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25 | a8083063 | Iustin Pop | are two kinds of classes defined:
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26 | a8083063 | Iustin Pop | - logical units, which know how to deal with their specific opcode only
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27 | a8083063 | Iustin Pop | - the processor, which dispatches the opcodes to their logical units
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28 | a8083063 | Iustin Pop |
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29 | a8083063 | Iustin Pop | """
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30 | a8083063 | Iustin Pop | |
31 | a5eb7789 | Iustin Pop | import logging |
32 | 407339d0 | Michael Hanselmann | import random |
33 | 407339d0 | Michael Hanselmann | import time |
34 | a8083063 | Iustin Pop | |
35 | a8083063 | Iustin Pop | from ganeti import opcodes |
36 | a8083063 | Iustin Pop | from ganeti import constants |
37 | a8083063 | Iustin Pop | from ganeti import errors |
38 | a8083063 | Iustin Pop | from ganeti import rpc |
39 | a8083063 | Iustin Pop | from ganeti import cmdlib |
40 | 04864530 | Guido Trotter | from ganeti import locking |
41 | a8083063 | Iustin Pop | |
42 | 7c0d6283 | Michael Hanselmann | |
43 | 407339d0 | Michael Hanselmann | class _LockAcquireTimeout(Exception): |
44 | 407339d0 | Michael Hanselmann | """Internal exception to report timeouts on acquiring locks.
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45 | 407339d0 | Michael Hanselmann |
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46 | 407339d0 | Michael Hanselmann | """
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47 | 407339d0 | Michael Hanselmann | |
48 | 407339d0 | Michael Hanselmann | |
49 | e3200b18 | Michael Hanselmann | def _CalculateLockAttemptTimeouts(): |
50 | e3200b18 | Michael Hanselmann | """Calculate timeouts for lock attempts.
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51 | e3200b18 | Michael Hanselmann |
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52 | e3200b18 | Michael Hanselmann | """
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53 | e3200b18 | Michael Hanselmann | result = [1.0]
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54 | e3200b18 | Michael Hanselmann | |
55 | e3200b18 | Michael Hanselmann | # Wait for a total of at least 150s before doing a blocking acquire
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56 | e3200b18 | Michael Hanselmann | while sum(result) < 150.0: |
57 | e3200b18 | Michael Hanselmann | timeout = (result[-1] * 1.05) ** 1.25 |
58 | e3200b18 | Michael Hanselmann | |
59 | e3200b18 | Michael Hanselmann | # Cap timeout at 10 seconds. This gives other jobs a chance to run
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60 | e3200b18 | Michael Hanselmann | # even if we're still trying to get our locks, before finally moving
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61 | e3200b18 | Michael Hanselmann | # to a blocking acquire.
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62 | e3200b18 | Michael Hanselmann | if timeout > 10.0: |
63 | e3200b18 | Michael Hanselmann | timeout = 10.0
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64 | e3200b18 | Michael Hanselmann | |
65 | e3200b18 | Michael Hanselmann | elif timeout < 0.1: |
66 | e3200b18 | Michael Hanselmann | # Lower boundary for safety
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67 | e3200b18 | Michael Hanselmann | timeout = 0.1
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68 | e3200b18 | Michael Hanselmann | |
69 | e3200b18 | Michael Hanselmann | result.append(timeout) |
70 | e3200b18 | Michael Hanselmann | |
71 | e3200b18 | Michael Hanselmann | return result
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72 | e3200b18 | Michael Hanselmann | |
73 | e3200b18 | Michael Hanselmann | |
74 | e3200b18 | Michael Hanselmann | class _LockAttemptTimeoutStrategy(object): |
75 | 407339d0 | Michael Hanselmann | """Class with lock acquire timeout strategy.
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76 | 407339d0 | Michael Hanselmann |
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77 | 407339d0 | Michael Hanselmann | """
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78 | 407339d0 | Michael Hanselmann | __slots__ = [ |
79 | e3200b18 | Michael Hanselmann | "_attempt",
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80 | 407339d0 | Michael Hanselmann | "_random_fn",
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81 | 407339d0 | Michael Hanselmann | "_start_time",
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82 | e3200b18 | Michael Hanselmann | "_time_fn",
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83 | a6db1af2 | Michael Hanselmann | "_running_timeout",
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84 | 407339d0 | Michael Hanselmann | ] |
85 | 407339d0 | Michael Hanselmann | |
86 | e3200b18 | Michael Hanselmann | _TIMEOUT_PER_ATTEMPT = _CalculateLockAttemptTimeouts() |
87 | 407339d0 | Michael Hanselmann | |
88 | e3200b18 | Michael Hanselmann | def __init__(self, attempt=0, _time_fn=time.time, _random_fn=random.random): |
89 | 407339d0 | Michael Hanselmann | """Initializes this class.
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90 | 407339d0 | Michael Hanselmann |
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91 | e3200b18 | Michael Hanselmann | @type attempt: int
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92 | e3200b18 | Michael Hanselmann | @param attempt: Current attempt number
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93 | e3200b18 | Michael Hanselmann | @param _time_fn: Time function for unittests
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94 | 407339d0 | Michael Hanselmann | @param _random_fn: Random number generator for unittests
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95 | 407339d0 | Michael Hanselmann |
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96 | 407339d0 | Michael Hanselmann | """
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97 | 407339d0 | Michael Hanselmann | object.__init__(self) |
98 | 407339d0 | Michael Hanselmann | |
99 | e3200b18 | Michael Hanselmann | if attempt < 0: |
100 | e3200b18 | Michael Hanselmann | raise ValueError("Attempt must be zero or positive") |
101 | 407339d0 | Michael Hanselmann | |
102 | e3200b18 | Michael Hanselmann | self._attempt = attempt
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103 | e3200b18 | Michael Hanselmann | self._time_fn = _time_fn
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104 | e3200b18 | Michael Hanselmann | self._random_fn = _random_fn
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105 | e3200b18 | Michael Hanselmann | |
106 | a6db1af2 | Michael Hanselmann | try:
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107 | a6db1af2 | Michael Hanselmann | timeout = self._TIMEOUT_PER_ATTEMPT[attempt]
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108 | a6db1af2 | Michael Hanselmann | except IndexError: |
109 | a6db1af2 | Michael Hanselmann | # No more timeouts, do blocking acquire
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110 | a6db1af2 | Michael Hanselmann | timeout = None
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111 | a6db1af2 | Michael Hanselmann | |
112 | a6db1af2 | Michael Hanselmann | self._running_timeout = locking.RunningTimeout(timeout, False, |
113 | a6db1af2 | Michael Hanselmann | _time_fn=_time_fn) |
114 | 407339d0 | Michael Hanselmann | |
115 | 407339d0 | Michael Hanselmann | def NextAttempt(self): |
116 | e3200b18 | Michael Hanselmann | """Returns the strategy for the next attempt.
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117 | 407339d0 | Michael Hanselmann |
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118 | 407339d0 | Michael Hanselmann | """
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119 | e3200b18 | Michael Hanselmann | return _LockAttemptTimeoutStrategy(attempt=self._attempt + 1, |
120 | e3200b18 | Michael Hanselmann | _time_fn=self._time_fn,
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121 | e3200b18 | Michael Hanselmann | _random_fn=self._random_fn)
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122 | 407339d0 | Michael Hanselmann | |
123 | 407339d0 | Michael Hanselmann | def CalcRemainingTimeout(self): |
124 | 407339d0 | Michael Hanselmann | """Returns the remaining timeout.
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125 | 407339d0 | Michael Hanselmann |
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126 | 407339d0 | Michael Hanselmann | """
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127 | a6db1af2 | Michael Hanselmann | timeout = self._running_timeout.Remaining()
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128 | 407339d0 | Michael Hanselmann | |
129 | a6db1af2 | Michael Hanselmann | if timeout is not None: |
130 | a6db1af2 | Michael Hanselmann | # Add a small variation (-/+ 5%) to timeout. This helps in situations
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131 | a6db1af2 | Michael Hanselmann | # where two or more jobs are fighting for the same lock(s).
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132 | a6db1af2 | Michael Hanselmann | variation_range = timeout * 0.1
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133 | a6db1af2 | Michael Hanselmann | timeout += ((self._random_fn() * variation_range) -
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134 | a6db1af2 | Michael Hanselmann | (variation_range * 0.5))
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135 | 407339d0 | Michael Hanselmann | |
136 | a6db1af2 | Michael Hanselmann | return timeout
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137 | 407339d0 | Michael Hanselmann | |
138 | 407339d0 | Michael Hanselmann | |
139 | 7260cfbe | Iustin Pop | class OpExecCbBase: # pylint: disable-msg=W0232 |
140 | 031a3e57 | Michael Hanselmann | """Base class for OpCode execution callbacks.
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141 | 031a3e57 | Michael Hanselmann |
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142 | 031a3e57 | Michael Hanselmann | """
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143 | 031a3e57 | Michael Hanselmann | def NotifyStart(self): |
144 | 031a3e57 | Michael Hanselmann | """Called when we are about to execute the LU.
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145 | 031a3e57 | Michael Hanselmann |
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146 | 031a3e57 | Michael Hanselmann | This function is called when we're about to start the lu's Exec() method,
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147 | 031a3e57 | Michael Hanselmann | that is, after we have acquired all locks.
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148 | 031a3e57 | Michael Hanselmann |
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149 | 031a3e57 | Michael Hanselmann | """
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150 | 031a3e57 | Michael Hanselmann | |
151 | 031a3e57 | Michael Hanselmann | def Feedback(self, *args): |
152 | 031a3e57 | Michael Hanselmann | """Sends feedback from the LU code to the end-user.
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153 | 031a3e57 | Michael Hanselmann |
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154 | 031a3e57 | Michael Hanselmann | """
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155 | 031a3e57 | Michael Hanselmann | |
156 | ef2df7d3 | Michael Hanselmann | def ReportLocks(self, msg): |
157 | ef2df7d3 | Michael Hanselmann | """Report lock operations.
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158 | ef2df7d3 | Michael Hanselmann |
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159 | ef2df7d3 | Michael Hanselmann | """
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160 | ef2df7d3 | Michael Hanselmann | |
161 | 031a3e57 | Michael Hanselmann | |
162 | a8083063 | Iustin Pop | class Processor(object): |
163 | a8083063 | Iustin Pop | """Object which runs OpCodes"""
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164 | a8083063 | Iustin Pop | DISPATCH_TABLE = { |
165 | a8083063 | Iustin Pop | # Cluster
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166 | b5f5fae9 | Luca Bigliardi | opcodes.OpPostInitCluster: cmdlib.LUPostInitCluster, |
167 | a8083063 | Iustin Pop | opcodes.OpDestroyCluster: cmdlib.LUDestroyCluster, |
168 | a8083063 | Iustin Pop | opcodes.OpQueryClusterInfo: cmdlib.LUQueryClusterInfo, |
169 | a8083063 | Iustin Pop | opcodes.OpVerifyCluster: cmdlib.LUVerifyCluster, |
170 | ae5849b5 | Michael Hanselmann | opcodes.OpQueryConfigValues: cmdlib.LUQueryConfigValues, |
171 | 07bd8a51 | Iustin Pop | opcodes.OpRenameCluster: cmdlib.LURenameCluster, |
172 | f4d4e184 | Iustin Pop | opcodes.OpVerifyDisks: cmdlib.LUVerifyDisks, |
173 | 0cc05d44 | Manuel Franceschini | opcodes.OpSetClusterParams: cmdlib.LUSetClusterParams, |
174 | afee0879 | Iustin Pop | opcodes.OpRedistributeConfig: cmdlib.LURedistributeConfig, |
175 | 60975797 | Iustin Pop | opcodes.OpRepairDiskSizes: cmdlib.LURepairDiskSizes, |
176 | a8083063 | Iustin Pop | # node lu
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177 | a8083063 | Iustin Pop | opcodes.OpAddNode: cmdlib.LUAddNode, |
178 | a8083063 | Iustin Pop | opcodes.OpQueryNodes: cmdlib.LUQueryNodes, |
179 | dcb93971 | Michael Hanselmann | opcodes.OpQueryNodeVolumes: cmdlib.LUQueryNodeVolumes, |
180 | 9e5442ce | Michael Hanselmann | opcodes.OpQueryNodeStorage: cmdlib.LUQueryNodeStorage, |
181 | efb8da02 | Michael Hanselmann | opcodes.OpModifyNodeStorage: cmdlib.LUModifyNodeStorage, |
182 | 76aef8fc | Michael Hanselmann | opcodes.OpRepairNodeStorage: cmdlib.LURepairNodeStorage, |
183 | a8083063 | Iustin Pop | opcodes.OpRemoveNode: cmdlib.LURemoveNode, |
184 | b31c8676 | Iustin Pop | opcodes.OpSetNodeParams: cmdlib.LUSetNodeParams, |
185 | f5118ade | Iustin Pop | opcodes.OpPowercycleNode: cmdlib.LUPowercycleNode, |
186 | 80cb875c | Michael Hanselmann | opcodes.OpMigrateNode: cmdlib.LUMigrateNode, |
187 | f7e7689f | Iustin Pop | opcodes.OpNodeEvacuationStrategy: cmdlib.LUNodeEvacuationStrategy, |
188 | a8083063 | Iustin Pop | # instance lu
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189 | a8083063 | Iustin Pop | opcodes.OpCreateInstance: cmdlib.LUCreateInstance, |
190 | fe7b0351 | Michael Hanselmann | opcodes.OpReinstallInstance: cmdlib.LUReinstallInstance, |
191 | a8083063 | Iustin Pop | opcodes.OpRemoveInstance: cmdlib.LURemoveInstance, |
192 | decd5f45 | Iustin Pop | opcodes.OpRenameInstance: cmdlib.LURenameInstance, |
193 | a8083063 | Iustin Pop | opcodes.OpActivateInstanceDisks: cmdlib.LUActivateInstanceDisks, |
194 | a8083063 | Iustin Pop | opcodes.OpShutdownInstance: cmdlib.LUShutdownInstance, |
195 | a8083063 | Iustin Pop | opcodes.OpStartupInstance: cmdlib.LUStartupInstance, |
196 | bf6929a2 | Alexander Schreiber | opcodes.OpRebootInstance: cmdlib.LURebootInstance, |
197 | a8083063 | Iustin Pop | opcodes.OpDeactivateInstanceDisks: cmdlib.LUDeactivateInstanceDisks, |
198 | a8083063 | Iustin Pop | opcodes.OpReplaceDisks: cmdlib.LUReplaceDisks, |
199 | bd315bfa | Iustin Pop | opcodes.OpRecreateInstanceDisks: cmdlib.LURecreateInstanceDisks, |
200 | a8083063 | Iustin Pop | opcodes.OpFailoverInstance: cmdlib.LUFailoverInstance, |
201 | 53c776b5 | Iustin Pop | opcodes.OpMigrateInstance: cmdlib.LUMigrateInstance, |
202 | 313bcead | Iustin Pop | opcodes.OpMoveInstance: cmdlib.LUMoveInstance, |
203 | a8083063 | Iustin Pop | opcodes.OpConnectConsole: cmdlib.LUConnectConsole, |
204 | a8083063 | Iustin Pop | opcodes.OpQueryInstances: cmdlib.LUQueryInstances, |
205 | a8083063 | Iustin Pop | opcodes.OpQueryInstanceData: cmdlib.LUQueryInstanceData, |
206 | 7767bbf5 | Manuel Franceschini | opcodes.OpSetInstanceParams: cmdlib.LUSetInstanceParams, |
207 | 8729e0d7 | Iustin Pop | opcodes.OpGrowDisk: cmdlib.LUGrowDisk, |
208 | a8083063 | Iustin Pop | # os lu
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209 | a8083063 | Iustin Pop | opcodes.OpDiagnoseOS: cmdlib.LUDiagnoseOS, |
210 | a8083063 | Iustin Pop | # exports lu
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211 | a8083063 | Iustin Pop | opcodes.OpQueryExports: cmdlib.LUQueryExports, |
212 | 1410fa8d | Michael Hanselmann | opcodes.OpPrepareExport: cmdlib.LUPrepareExport, |
213 | a8083063 | Iustin Pop | opcodes.OpExportInstance: cmdlib.LUExportInstance, |
214 | 9ac99fda | Guido Trotter | opcodes.OpRemoveExport: cmdlib.LURemoveExport, |
215 | 5c947f38 | Iustin Pop | # tags lu
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216 | 5c947f38 | Iustin Pop | opcodes.OpGetTags: cmdlib.LUGetTags, |
217 | 73415719 | Iustin Pop | opcodes.OpSearchTags: cmdlib.LUSearchTags, |
218 | f27302fa | Iustin Pop | opcodes.OpAddTags: cmdlib.LUAddTags, |
219 | f27302fa | Iustin Pop | opcodes.OpDelTags: cmdlib.LUDelTags, |
220 | 06009e27 | Iustin Pop | # test lu
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221 | 06009e27 | Iustin Pop | opcodes.OpTestDelay: cmdlib.LUTestDelay, |
222 | d61df03e | Iustin Pop | opcodes.OpTestAllocator: cmdlib.LUTestAllocator, |
223 | a8083063 | Iustin Pop | } |
224 | a8083063 | Iustin Pop | |
225 | adfa97e3 | Guido Trotter | def __init__(self, context, ec_id): |
226 | a8083063 | Iustin Pop | """Constructor for Processor
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227 | a8083063 | Iustin Pop |
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228 | adfa97e3 | Guido Trotter | @type context: GanetiContext
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229 | adfa97e3 | Guido Trotter | @param context: global Ganeti context
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230 | adfa97e3 | Guido Trotter | @type ec_id: string
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231 | adfa97e3 | Guido Trotter | @param ec_id: execution context identifier
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232 | adfa97e3 | Guido Trotter |
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233 | a8083063 | Iustin Pop | """
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234 | 1c901d13 | Guido Trotter | self.context = context
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235 | adfa97e3 | Guido Trotter | self._ec_id = ec_id
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236 | 031a3e57 | Michael Hanselmann | self._cbs = None |
237 | 72737a7f | Iustin Pop | self.rpc = rpc.RpcRunner(context.cfg)
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238 | cd46f3b4 | Luca Bigliardi | self.hmclass = HooksMaster
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239 | a8083063 | Iustin Pop | |
240 | 211b6132 | Michael Hanselmann | def _ReportLocks(self, level, names, shared, timeout, acquired, result): |
241 | ef2df7d3 | Michael Hanselmann | """Reports lock operations.
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242 | ef2df7d3 | Michael Hanselmann |
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243 | ef2df7d3 | Michael Hanselmann | @type level: int
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244 | ef2df7d3 | Michael Hanselmann | @param level: Lock level
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245 | ef2df7d3 | Michael Hanselmann | @type names: list or string
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246 | ef2df7d3 | Michael Hanselmann | @param names: Lock names
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247 | ef2df7d3 | Michael Hanselmann | @type shared: bool
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248 | 211b6132 | Michael Hanselmann | @param shared: Whether the locks should be acquired in shared mode
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249 | 211b6132 | Michael Hanselmann | @type timeout: None or float
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250 | 211b6132 | Michael Hanselmann | @param timeout: Timeout for acquiring the locks
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251 | ef2df7d3 | Michael Hanselmann | @type acquired: bool
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252 | 211b6132 | Michael Hanselmann | @param acquired: Whether the locks have already been acquired
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253 | 211b6132 | Michael Hanselmann | @type result: None or set
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254 | 211b6132 | Michael Hanselmann | @param result: Result from L{locking.GanetiLockManager.acquire}
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255 | ef2df7d3 | Michael Hanselmann |
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256 | ef2df7d3 | Michael Hanselmann | """
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257 | ef2df7d3 | Michael Hanselmann | parts = [] |
258 | ef2df7d3 | Michael Hanselmann | |
259 | ef2df7d3 | Michael Hanselmann | # Build message
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260 | ef2df7d3 | Michael Hanselmann | if acquired:
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261 | 211b6132 | Michael Hanselmann | if result is None: |
262 | 211b6132 | Michael Hanselmann | parts.append("timeout")
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263 | 211b6132 | Michael Hanselmann | else:
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264 | 211b6132 | Michael Hanselmann | parts.append("acquired")
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265 | ef2df7d3 | Michael Hanselmann | else:
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266 | ef2df7d3 | Michael Hanselmann | parts.append("waiting")
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267 | 211b6132 | Michael Hanselmann | if timeout is None: |
268 | 211b6132 | Michael Hanselmann | parts.append("blocking")
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269 | 211b6132 | Michael Hanselmann | else:
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270 | 211b6132 | Michael Hanselmann | parts.append("timeout=%0.6fs" % timeout)
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271 | ef2df7d3 | Michael Hanselmann | |
272 | ef2df7d3 | Michael Hanselmann | parts.append(locking.LEVEL_NAMES[level]) |
273 | ef2df7d3 | Michael Hanselmann | |
274 | ef2df7d3 | Michael Hanselmann | if names == locking.ALL_SET:
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275 | ef2df7d3 | Michael Hanselmann | parts.append("ALL")
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276 | ef2df7d3 | Michael Hanselmann | elif isinstance(names, basestring): |
277 | ef2df7d3 | Michael Hanselmann | parts.append(names) |
278 | ef2df7d3 | Michael Hanselmann | else:
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279 | 4776e022 | Michael Hanselmann | parts.append(",".join(sorted(names))) |
280 | ef2df7d3 | Michael Hanselmann | |
281 | ef2df7d3 | Michael Hanselmann | if shared:
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282 | ef2df7d3 | Michael Hanselmann | parts.append("shared")
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283 | ef2df7d3 | Michael Hanselmann | else:
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284 | ef2df7d3 | Michael Hanselmann | parts.append("exclusive")
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285 | ef2df7d3 | Michael Hanselmann | |
286 | ef2df7d3 | Michael Hanselmann | msg = "/".join(parts)
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287 | ef2df7d3 | Michael Hanselmann | |
288 | ef2df7d3 | Michael Hanselmann | logging.debug("LU locks %s", msg)
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289 | ef2df7d3 | Michael Hanselmann | |
290 | ef2df7d3 | Michael Hanselmann | if self._cbs: |
291 | ef2df7d3 | Michael Hanselmann | self._cbs.ReportLocks(msg)
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292 | ef2df7d3 | Michael Hanselmann | |
293 | 211b6132 | Michael Hanselmann | def _AcquireLocks(self, level, names, shared, timeout): |
294 | 211b6132 | Michael Hanselmann | """Acquires locks via the Ganeti lock manager.
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295 | 211b6132 | Michael Hanselmann |
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296 | 211b6132 | Michael Hanselmann | @type level: int
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297 | 211b6132 | Michael Hanselmann | @param level: Lock level
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298 | 211b6132 | Michael Hanselmann | @type names: list or string
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299 | 211b6132 | Michael Hanselmann | @param names: Lock names
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300 | 211b6132 | Michael Hanselmann | @type shared: bool
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301 | 211b6132 | Michael Hanselmann | @param shared: Whether the locks should be acquired in shared mode
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302 | 211b6132 | Michael Hanselmann | @type timeout: None or float
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303 | 211b6132 | Michael Hanselmann | @param timeout: Timeout for acquiring the locks
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304 | 211b6132 | Michael Hanselmann |
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305 | 211b6132 | Michael Hanselmann | """
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306 | 211b6132 | Michael Hanselmann | self._ReportLocks(level, names, shared, timeout, False, None) |
307 | 211b6132 | Michael Hanselmann | |
308 | 211b6132 | Michael Hanselmann | acquired = self.context.glm.acquire(level, names, shared=shared,
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309 | 211b6132 | Michael Hanselmann | timeout=timeout) |
310 | 211b6132 | Michael Hanselmann | |
311 | 211b6132 | Michael Hanselmann | self._ReportLocks(level, names, shared, timeout, True, acquired) |
312 | 211b6132 | Michael Hanselmann | |
313 | 211b6132 | Michael Hanselmann | return acquired
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314 | 211b6132 | Michael Hanselmann | |
315 | 36c381d7 | Guido Trotter | def _ExecLU(self, lu): |
316 | 36c381d7 | Guido Trotter | """Logical Unit execution sequence.
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317 | 36c381d7 | Guido Trotter |
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318 | 36c381d7 | Guido Trotter | """
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319 | 36c381d7 | Guido Trotter | write_count = self.context.cfg.write_count
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320 | 36c381d7 | Guido Trotter | lu.CheckPrereq() |
321 | 4b5e8271 | Iustin Pop | hm = HooksMaster(self.rpc.call_hooks_runner, lu)
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322 | 36c381d7 | Guido Trotter | h_results = hm.RunPhase(constants.HOOKS_PHASE_PRE) |
323 | 36c381d7 | Guido Trotter | lu.HooksCallBack(constants.HOOKS_PHASE_PRE, h_results, |
324 | 031a3e57 | Michael Hanselmann | self._Feedback, None) |
325 | 20777413 | Iustin Pop | |
326 | 20777413 | Iustin Pop | if getattr(lu.op, "dry_run", False): |
327 | 20777413 | Iustin Pop | # in this mode, no post-hooks are run, and the config is not
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328 | 20777413 | Iustin Pop | # written (as it might have been modified by another LU, and we
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329 | 20777413 | Iustin Pop | # shouldn't do writeout on behalf of other threads
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330 | 20777413 | Iustin Pop | self.LogInfo("dry-run mode requested, not actually executing" |
331 | 20777413 | Iustin Pop | " the operation")
|
332 | 20777413 | Iustin Pop | return lu.dry_run_result
|
333 | 20777413 | Iustin Pop | |
334 | 36c381d7 | Guido Trotter | try:
|
335 | 031a3e57 | Michael Hanselmann | result = lu.Exec(self._Feedback)
|
336 | 36c381d7 | Guido Trotter | h_results = hm.RunPhase(constants.HOOKS_PHASE_POST) |
337 | 36c381d7 | Guido Trotter | result = lu.HooksCallBack(constants.HOOKS_PHASE_POST, h_results, |
338 | 031a3e57 | Michael Hanselmann | self._Feedback, result)
|
339 | 36c381d7 | Guido Trotter | finally:
|
340 | 36c381d7 | Guido Trotter | # FIXME: This needs locks if not lu_class.REQ_BGL
|
341 | 36c381d7 | Guido Trotter | if write_count != self.context.cfg.write_count: |
342 | 36c381d7 | Guido Trotter | hm.RunConfigUpdate() |
343 | 36c381d7 | Guido Trotter | |
344 | 36c381d7 | Guido Trotter | return result
|
345 | 36c381d7 | Guido Trotter | |
346 | 407339d0 | Michael Hanselmann | def _LockAndExecLU(self, lu, level, calc_timeout): |
347 | 68adfdb2 | Guido Trotter | """Execute a Logical Unit, with the needed locks.
|
348 | 68adfdb2 | Guido Trotter |
|
349 | 68adfdb2 | Guido Trotter | This is a recursive function that starts locking the given level, and
|
350 | 68adfdb2 | Guido Trotter | proceeds up, till there are no more locks to acquire. Then it executes the
|
351 | 68adfdb2 | Guido Trotter | given LU and its opcodes.
|
352 | 68adfdb2 | Guido Trotter |
|
353 | 68adfdb2 | Guido Trotter | """
|
354 | ca2a79e1 | Guido Trotter | adding_locks = level in lu.add_locks
|
355 | ca2a79e1 | Guido Trotter | acquiring_locks = level in lu.needed_locks
|
356 | 8a2941c4 | Guido Trotter | if level not in locking.LEVELS: |
357 | 031a3e57 | Michael Hanselmann | if self._cbs: |
358 | 031a3e57 | Michael Hanselmann | self._cbs.NotifyStart()
|
359 | 031a3e57 | Michael Hanselmann | |
360 | 8a2941c4 | Guido Trotter | result = self._ExecLU(lu)
|
361 | 407339d0 | Michael Hanselmann | |
362 | ca2a79e1 | Guido Trotter | elif adding_locks and acquiring_locks: |
363 | ca2a79e1 | Guido Trotter | # We could both acquire and add locks at the same level, but for now we
|
364 | ca2a79e1 | Guido Trotter | # don't need this, so we'll avoid the complicated code needed.
|
365 | 407339d0 | Michael Hanselmann | raise NotImplementedError("Can't declare locks to acquire when adding" |
366 | 407339d0 | Michael Hanselmann | " others")
|
367 | 407339d0 | Michael Hanselmann | |
368 | ca2a79e1 | Guido Trotter | elif adding_locks or acquiring_locks: |
369 | fb8dcb62 | Guido Trotter | lu.DeclareLocks(level) |
370 | 3977a4c1 | Guido Trotter | share = lu.share_locks[level] |
371 | 407339d0 | Michael Hanselmann | |
372 | 68adfdb2 | Guido Trotter | try:
|
373 | 407339d0 | Michael Hanselmann | assert adding_locks ^ acquiring_locks, \
|
374 | 407339d0 | Michael Hanselmann | "Locks must be either added or acquired"
|
375 | 407339d0 | Michael Hanselmann | |
376 | 407339d0 | Michael Hanselmann | if acquiring_locks:
|
377 | 407339d0 | Michael Hanselmann | # Acquiring locks
|
378 | 407339d0 | Michael Hanselmann | needed_locks = lu.needed_locks[level] |
379 | 407339d0 | Michael Hanselmann | |
380 | 211b6132 | Michael Hanselmann | acquired = self._AcquireLocks(level, needed_locks, share,
|
381 | 211b6132 | Michael Hanselmann | calc_timeout()) |
382 | 407339d0 | Michael Hanselmann | |
383 | 407339d0 | Michael Hanselmann | if acquired is None: |
384 | 407339d0 | Michael Hanselmann | raise _LockAcquireTimeout()
|
385 | 407339d0 | Michael Hanselmann | |
386 | 407339d0 | Michael Hanselmann | else:
|
387 | 407339d0 | Michael Hanselmann | # Adding locks
|
388 | 407339d0 | Michael Hanselmann | add_locks = lu.add_locks[level] |
389 | 407339d0 | Michael Hanselmann | lu.remove_locks[level] = add_locks |
390 | 407339d0 | Michael Hanselmann | |
391 | 407339d0 | Michael Hanselmann | try:
|
392 | 407339d0 | Michael Hanselmann | self.context.glm.add(level, add_locks, acquired=1, shared=share) |
393 | 407339d0 | Michael Hanselmann | except errors.LockError:
|
394 | 407339d0 | Michael Hanselmann | raise errors.OpPrereqError(
|
395 | 407339d0 | Michael Hanselmann | "Couldn't add locks (%s), probably because of a race condition"
|
396 | debac808 | Iustin Pop | " with another job, who added them first" % add_locks,
|
397 | debac808 | Iustin Pop | errors.ECODE_FAULT) |
398 | 407339d0 | Michael Hanselmann | |
399 | 6f14fc27 | Michael Hanselmann | acquired = add_locks |
400 | 6f14fc27 | Michael Hanselmann | |
401 | ca2a79e1 | Guido Trotter | try:
|
402 | 6f14fc27 | Michael Hanselmann | lu.acquired_locks[level] = acquired |
403 | 6f14fc27 | Michael Hanselmann | |
404 | 407339d0 | Michael Hanselmann | result = self._LockAndExecLU(lu, level + 1, calc_timeout) |
405 | ca2a79e1 | Guido Trotter | finally:
|
406 | ca2a79e1 | Guido Trotter | if level in lu.remove_locks: |
407 | ca2a79e1 | Guido Trotter | self.context.glm.remove(level, lu.remove_locks[level])
|
408 | 68adfdb2 | Guido Trotter | finally:
|
409 | 80ee04a4 | Guido Trotter | if self.context.glm.is_owned(level): |
410 | 68adfdb2 | Guido Trotter | self.context.glm.release(level)
|
411 | 407339d0 | Michael Hanselmann | |
412 | 68adfdb2 | Guido Trotter | else:
|
413 | 407339d0 | Michael Hanselmann | result = self._LockAndExecLU(lu, level + 1, calc_timeout) |
414 | 68adfdb2 | Guido Trotter | |
415 | 68adfdb2 | Guido Trotter | return result
|
416 | 68adfdb2 | Guido Trotter | |
417 | 031a3e57 | Michael Hanselmann | def ExecOpCode(self, op, cbs): |
418 | a8083063 | Iustin Pop | """Execute an opcode.
|
419 | a8083063 | Iustin Pop |
|
420 | e92376d7 | Iustin Pop | @type op: an OpCode instance
|
421 | e92376d7 | Iustin Pop | @param op: the opcode to be executed
|
422 | 031a3e57 | Michael Hanselmann | @type cbs: L{OpExecCbBase}
|
423 | 031a3e57 | Michael Hanselmann | @param cbs: Runtime callbacks
|
424 | a8083063 | Iustin Pop |
|
425 | a8083063 | Iustin Pop | """
|
426 | a8083063 | Iustin Pop | if not isinstance(op, opcodes.OpCode): |
427 | 3ecf6786 | Iustin Pop | raise errors.ProgrammerError("Non-opcode instance passed" |
428 | 3ecf6786 | Iustin Pop | " to ExecOpcode")
|
429 | a8083063 | Iustin Pop | |
430 | 031a3e57 | Michael Hanselmann | self._cbs = cbs
|
431 | fe482621 | Iustin Pop | try:
|
432 | 031a3e57 | Michael Hanselmann | lu_class = self.DISPATCH_TABLE.get(op.__class__, None) |
433 | 031a3e57 | Michael Hanselmann | if lu_class is None: |
434 | 031a3e57 | Michael Hanselmann | raise errors.OpCodeUnknown("Unknown opcode") |
435 | 031a3e57 | Michael Hanselmann | |
436 | e3200b18 | Michael Hanselmann | timeout_strategy = _LockAttemptTimeoutStrategy() |
437 | 407339d0 | Michael Hanselmann | |
438 | 407339d0 | Michael Hanselmann | while True: |
439 | 407339d0 | Michael Hanselmann | try:
|
440 | e3200b18 | Michael Hanselmann | acquire_timeout = timeout_strategy.CalcRemainingTimeout() |
441 | e3200b18 | Michael Hanselmann | |
442 | 211b6132 | Michael Hanselmann | # Acquire the Big Ganeti Lock exclusively if this LU requires it,
|
443 | 211b6132 | Michael Hanselmann | # and in a shared fashion otherwise (to prevent concurrent run with
|
444 | 211b6132 | Michael Hanselmann | # an exclusive LU.
|
445 | 211b6132 | Michael Hanselmann | if self._AcquireLocks(locking.LEVEL_CLUSTER, locking.BGL, |
446 | e3200b18 | Michael Hanselmann | not lu_class.REQ_BGL, acquire_timeout) is None: |
447 | 407339d0 | Michael Hanselmann | raise _LockAcquireTimeout()
|
448 | 407339d0 | Michael Hanselmann | |
449 | 407339d0 | Michael Hanselmann | try:
|
450 | 407339d0 | Michael Hanselmann | lu = lu_class(self, op, self.context, self.rpc) |
451 | 407339d0 | Michael Hanselmann | lu.ExpandNames() |
452 | 407339d0 | Michael Hanselmann | assert lu.needed_locks is not None, "needed_locks not set by LU" |
453 | 407339d0 | Michael Hanselmann | |
454 | 73064714 | Guido Trotter | try:
|
455 | 73064714 | Guido Trotter | return self._LockAndExecLU(lu, locking.LEVEL_INSTANCE, |
456 | 73064714 | Guido Trotter | timeout_strategy.CalcRemainingTimeout) |
457 | 73064714 | Guido Trotter | finally:
|
458 | 73064714 | Guido Trotter | if self._ec_id: |
459 | 73064714 | Guido Trotter | self.context.cfg.DropECReservations(self._ec_id) |
460 | 73064714 | Guido Trotter | |
461 | 407339d0 | Michael Hanselmann | finally:
|
462 | 407339d0 | Michael Hanselmann | self.context.glm.release(locking.LEVEL_CLUSTER)
|
463 | 407339d0 | Michael Hanselmann | |
464 | 407339d0 | Michael Hanselmann | except _LockAcquireTimeout:
|
465 | 407339d0 | Michael Hanselmann | # Timeout while waiting for lock, try again
|
466 | 407339d0 | Michael Hanselmann | pass
|
467 | 407339d0 | Michael Hanselmann | |
468 | e3200b18 | Michael Hanselmann | timeout_strategy = timeout_strategy.NextAttempt() |
469 | 407339d0 | Michael Hanselmann | |
470 | 04864530 | Guido Trotter | finally:
|
471 | 031a3e57 | Michael Hanselmann | self._cbs = None |
472 | 6a4aa7c1 | Iustin Pop | |
473 | 031a3e57 | Michael Hanselmann | def _Feedback(self, *args): |
474 | 031a3e57 | Michael Hanselmann | """Forward call to feedback callback function.
|
475 | 031a3e57 | Michael Hanselmann |
|
476 | 031a3e57 | Michael Hanselmann | """
|
477 | 031a3e57 | Michael Hanselmann | if self._cbs: |
478 | 031a3e57 | Michael Hanselmann | self._cbs.Feedback(*args)
|
479 | 031a3e57 | Michael Hanselmann | |
480 | 0fbbf897 | Iustin Pop | def LogStep(self, current, total, message): |
481 | 0fbbf897 | Iustin Pop | """Log a change in LU execution progress.
|
482 | 0fbbf897 | Iustin Pop |
|
483 | 0fbbf897 | Iustin Pop | """
|
484 | a5eb7789 | Iustin Pop | logging.debug("Step %d/%d %s", current, total, message)
|
485 | 031a3e57 | Michael Hanselmann | self._Feedback("STEP %d/%d %s" % (current, total, message)) |
486 | 0fbbf897 | Iustin Pop | |
487 | c0088fb9 | Iustin Pop | def LogWarning(self, message, *args, **kwargs): |
488 | 0fbbf897 | Iustin Pop | """Log a warning to the logs and the user.
|
489 | 0fbbf897 | Iustin Pop |
|
490 | c0088fb9 | Iustin Pop | The optional keyword argument is 'hint' and can be used to show a
|
491 | c0088fb9 | Iustin Pop | hint to the user (presumably related to the warning). If the
|
492 | c0088fb9 | Iustin Pop | message is empty, it will not be printed at all, allowing one to
|
493 | c0088fb9 | Iustin Pop | show only a hint.
|
494 | 0fbbf897 | Iustin Pop |
|
495 | c0088fb9 | Iustin Pop | """
|
496 | c0088fb9 | Iustin Pop | assert not kwargs or (len(kwargs) == 1 and "hint" in kwargs), \ |
497 | c0088fb9 | Iustin Pop | "Invalid keyword arguments for LogWarning (%s)" % str(kwargs) |
498 | c0088fb9 | Iustin Pop | if args:
|
499 | c0088fb9 | Iustin Pop | message = message % tuple(args)
|
500 | c0088fb9 | Iustin Pop | if message:
|
501 | c0088fb9 | Iustin Pop | logging.warning(message) |
502 | 031a3e57 | Michael Hanselmann | self._Feedback(" - WARNING: %s" % message) |
503 | c0088fb9 | Iustin Pop | if "hint" in kwargs: |
504 | 031a3e57 | Michael Hanselmann | self._Feedback(" Hint: %s" % kwargs["hint"]) |
505 | c0088fb9 | Iustin Pop | |
506 | c0088fb9 | Iustin Pop | def LogInfo(self, message, *args): |
507 | 0fbbf897 | Iustin Pop | """Log an informational message to the logs and the user.
|
508 | 0fbbf897 | Iustin Pop |
|
509 | 0fbbf897 | Iustin Pop | """
|
510 | c0088fb9 | Iustin Pop | if args:
|
511 | c0088fb9 | Iustin Pop | message = message % tuple(args)
|
512 | a5eb7789 | Iustin Pop | logging.info(message) |
513 | 031a3e57 | Michael Hanselmann | self._Feedback(" - INFO: %s" % message) |
514 | 0fbbf897 | Iustin Pop | |
515 | adfa97e3 | Guido Trotter | def GetECId(self): |
516 | adfa97e3 | Guido Trotter | if not self._ec_id: |
517 | adfa97e3 | Guido Trotter | errors.ProgrammerError("Tried to use execution context id when not set")
|
518 | adfa97e3 | Guido Trotter | return self._ec_id |
519 | adfa97e3 | Guido Trotter | |
520 | a8083063 | Iustin Pop | |
521 | a8083063 | Iustin Pop | class HooksMaster(object): |
522 | a8083063 | Iustin Pop | """Hooks master.
|
523 | a8083063 | Iustin Pop |
|
524 | a8083063 | Iustin Pop | This class distributes the run commands to the nodes based on the
|
525 | a8083063 | Iustin Pop | specific LU class.
|
526 | a8083063 | Iustin Pop |
|
527 | a8083063 | Iustin Pop | In order to remove the direct dependency on the rpc module, the
|
528 | a8083063 | Iustin Pop | constructor needs a function which actually does the remote
|
529 | a8083063 | Iustin Pop | call. This will usually be rpc.call_hooks_runner, but any function
|
530 | a8083063 | Iustin Pop | which behaves the same works.
|
531 | a8083063 | Iustin Pop |
|
532 | a8083063 | Iustin Pop | """
|
533 | 4b5e8271 | Iustin Pop | def __init__(self, callfn, lu): |
534 | a8083063 | Iustin Pop | self.callfn = callfn
|
535 | a8083063 | Iustin Pop | self.lu = lu
|
536 | a8083063 | Iustin Pop | self.op = lu.op
|
537 | a8083063 | Iustin Pop | self.env, node_list_pre, node_list_post = self._BuildEnv() |
538 | a8083063 | Iustin Pop | self.node_list = {constants.HOOKS_PHASE_PRE: node_list_pre,
|
539 | a8083063 | Iustin Pop | constants.HOOKS_PHASE_POST: node_list_post} |
540 | a8083063 | Iustin Pop | |
541 | a8083063 | Iustin Pop | def _BuildEnv(self): |
542 | a8083063 | Iustin Pop | """Compute the environment and the target nodes.
|
543 | a8083063 | Iustin Pop |
|
544 | a8083063 | Iustin Pop | Based on the opcode and the current node list, this builds the
|
545 | a8083063 | Iustin Pop | environment for the hooks and the target node list for the run.
|
546 | a8083063 | Iustin Pop |
|
547 | a8083063 | Iustin Pop | """
|
548 | a8083063 | Iustin Pop | env = { |
549 | a8083063 | Iustin Pop | "PATH": "/sbin:/bin:/usr/sbin:/usr/bin", |
550 | a8083063 | Iustin Pop | "GANETI_HOOKS_VERSION": constants.HOOKS_VERSION,
|
551 | a8083063 | Iustin Pop | "GANETI_OP_CODE": self.op.OP_ID, |
552 | a8083063 | Iustin Pop | "GANETI_OBJECT_TYPE": self.lu.HTYPE, |
553 | 6a4aa7c1 | Iustin Pop | "GANETI_DATA_DIR": constants.DATA_DIR,
|
554 | a8083063 | Iustin Pop | } |
555 | a8083063 | Iustin Pop | |
556 | 9a395a76 | Iustin Pop | if self.lu.HPATH is not None: |
557 | 9a395a76 | Iustin Pop | lu_env, lu_nodes_pre, lu_nodes_post = self.lu.BuildHooksEnv()
|
558 | 9a395a76 | Iustin Pop | if lu_env:
|
559 | 9a395a76 | Iustin Pop | for key in lu_env: |
560 | 9a395a76 | Iustin Pop | env["GANETI_" + key] = lu_env[key]
|
561 | 9a395a76 | Iustin Pop | else:
|
562 | 9a395a76 | Iustin Pop | lu_nodes_pre = lu_nodes_post = [] |
563 | a8083063 | Iustin Pop | |
564 | 4167825b | Iustin Pop | return env, frozenset(lu_nodes_pre), frozenset(lu_nodes_post) |
565 | 4167825b | Iustin Pop | |
566 | 4167825b | Iustin Pop | def _RunWrapper(self, node_list, hpath, phase): |
567 | 4167825b | Iustin Pop | """Simple wrapper over self.callfn.
|
568 | 4167825b | Iustin Pop |
|
569 | 4167825b | Iustin Pop | This method fixes the environment before doing the rpc call.
|
570 | 4167825b | Iustin Pop |
|
571 | 4167825b | Iustin Pop | """
|
572 | 4167825b | Iustin Pop | env = self.env.copy()
|
573 | 4167825b | Iustin Pop | env["GANETI_HOOKS_PHASE"] = phase
|
574 | 4167825b | Iustin Pop | env["GANETI_HOOKS_PATH"] = hpath
|
575 | 437138c9 | Michael Hanselmann | if self.lu.cfg is not None: |
576 | 437138c9 | Michael Hanselmann | env["GANETI_CLUSTER"] = self.lu.cfg.GetClusterName() |
577 | 437138c9 | Michael Hanselmann | env["GANETI_MASTER"] = self.lu.cfg.GetMasterNode() |
578 | a8083063 | Iustin Pop | |
579 | 4167825b | Iustin Pop | env = dict([(str(key), str(val)) for key, val in env.iteritems()]) |
580 | a8083063 | Iustin Pop | |
581 | 4167825b | Iustin Pop | return self.callfn(node_list, hpath, phase, env) |
582 | a8083063 | Iustin Pop | |
583 | 17e82923 | Luca Bigliardi | def RunPhase(self, phase, nodes=None): |
584 | a8083063 | Iustin Pop | """Run all the scripts for a phase.
|
585 | a8083063 | Iustin Pop |
|
586 | a8083063 | Iustin Pop | This is the main function of the HookMaster.
|
587 | a8083063 | Iustin Pop |
|
588 | 8dca23a3 | Iustin Pop | @param phase: one of L{constants.HOOKS_PHASE_POST} or
|
589 | 8dca23a3 | Iustin Pop | L{constants.HOOKS_PHASE_PRE}; it denotes the hooks phase
|
590 | 17e82923 | Luca Bigliardi | @param nodes: overrides the predefined list of nodes for the given phase
|
591 | 8dca23a3 | Iustin Pop | @return: the processed results of the hooks multi-node rpc call
|
592 | 8dca23a3 | Iustin Pop | @raise errors.HooksFailure: on communication failure to the nodes
|
593 | 6ef2dc74 | Luca Bigliardi | @raise errors.HooksAbort: on failure of one of the hooks
|
594 | b07a6922 | Guido Trotter |
|
595 | a8083063 | Iustin Pop | """
|
596 | 17e82923 | Luca Bigliardi | if not self.node_list[phase] and not nodes: |
597 | 9a395a76 | Iustin Pop | # empty node list, we should not attempt to run this as either
|
598 | 9a395a76 | Iustin Pop | # we're in the cluster init phase and the rpc client part can't
|
599 | 9a395a76 | Iustin Pop | # even attempt to run, or this LU doesn't do hooks at all
|
600 | a8083063 | Iustin Pop | return
|
601 | 4167825b | Iustin Pop | hpath = self.lu.HPATH
|
602 | 17e82923 | Luca Bigliardi | if nodes is not None: |
603 | 17e82923 | Luca Bigliardi | results = self._RunWrapper(nodes, hpath, phase)
|
604 | 17e82923 | Luca Bigliardi | else:
|
605 | 17e82923 | Luca Bigliardi | results = self._RunWrapper(self.node_list[phase], hpath, phase) |
606 | 8c4b9364 | Luca Bigliardi | errs = [] |
607 | 8c4b9364 | Luca Bigliardi | if not results: |
608 | 8c4b9364 | Luca Bigliardi | msg = "Communication Failure"
|
609 | 8c4b9364 | Luca Bigliardi | if phase == constants.HOOKS_PHASE_PRE:
|
610 | 8c4b9364 | Luca Bigliardi | raise errors.HooksFailure(msg)
|
611 | 8c4b9364 | Luca Bigliardi | else:
|
612 | 8c4b9364 | Luca Bigliardi | self.lu.LogWarning(msg)
|
613 | 640b961e | Luca Bigliardi | return results
|
614 | 8c4b9364 | Luca Bigliardi | for node_name in results: |
615 | 8c4b9364 | Luca Bigliardi | res = results[node_name] |
616 | 8c4b9364 | Luca Bigliardi | if res.offline:
|
617 | 8c4b9364 | Luca Bigliardi | continue
|
618 | 3cebe102 | Michael Hanselmann | msg = res.fail_msg |
619 | 8c4b9364 | Luca Bigliardi | if msg:
|
620 | 8c4b9364 | Luca Bigliardi | self.lu.LogWarning("Communication failure to node %s: %s", |
621 | 8c4b9364 | Luca Bigliardi | node_name, msg) |
622 | 8c4b9364 | Luca Bigliardi | continue
|
623 | 8c4b9364 | Luca Bigliardi | for script, hkr, output in res.payload: |
624 | 8c4b9364 | Luca Bigliardi | if hkr == constants.HKR_FAIL:
|
625 | 8c4b9364 | Luca Bigliardi | if phase == constants.HOOKS_PHASE_PRE:
|
626 | a8083063 | Iustin Pop | errs.append((node_name, script, output)) |
627 | 8c4b9364 | Luca Bigliardi | else:
|
628 | 8c4b9364 | Luca Bigliardi | if not output: |
629 | 640b961e | Luca Bigliardi | output = "(no output)"
|
630 | 8c4b9364 | Luca Bigliardi | self.lu.LogWarning("On %s script %s failed, output: %s" % |
631 | 8c4b9364 | Luca Bigliardi | (node_name, script, output)) |
632 | 8c4b9364 | Luca Bigliardi | if errs and phase == constants.HOOKS_PHASE_PRE: |
633 | 8c4b9364 | Luca Bigliardi | raise errors.HooksAbort(errs)
|
634 | b07a6922 | Guido Trotter | return results
|
635 | 6a4aa7c1 | Iustin Pop | |
636 | 6a4aa7c1 | Iustin Pop | def RunConfigUpdate(self): |
637 | 6a4aa7c1 | Iustin Pop | """Run the special configuration update hook
|
638 | 6a4aa7c1 | Iustin Pop |
|
639 | 6a4aa7c1 | Iustin Pop | This is a special hook that runs only on the master after each
|
640 | 6a4aa7c1 | Iustin Pop | top-level LI if the configuration has been updated.
|
641 | 6a4aa7c1 | Iustin Pop |
|
642 | 6a4aa7c1 | Iustin Pop | """
|
643 | 6a4aa7c1 | Iustin Pop | phase = constants.HOOKS_PHASE_POST |
644 | 6a4aa7c1 | Iustin Pop | hpath = constants.HOOKS_NAME_CFGUPDATE |
645 | 437138c9 | Michael Hanselmann | nodes = [self.lu.cfg.GetMasterNode()]
|
646 | 29921401 | Iustin Pop | self._RunWrapper(nodes, hpath, phase) |