root / lib / hypervisor / hv_base.py @ 31d3b918
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1 | 65a6f9b7 | Michael Hanselmann | #
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2 | 65a6f9b7 | Michael Hanselmann | #
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3 | 65a6f9b7 | Michael Hanselmann | |
4 | 53fde1ac | Iustin Pop | # Copyright (C) 2006, 2007, 2008, 2009, 2010, 2012, 2013 Google Inc.
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5 | 65a6f9b7 | Michael Hanselmann | #
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6 | 65a6f9b7 | Michael Hanselmann | # This program is free software; you can redistribute it and/or modify
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7 | 65a6f9b7 | Michael Hanselmann | # it under the terms of the GNU General Public License as published by
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8 | 65a6f9b7 | Michael Hanselmann | # the Free Software Foundation; either version 2 of the License, or
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9 | 65a6f9b7 | Michael Hanselmann | # (at your option) any later version.
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10 | 65a6f9b7 | Michael Hanselmann | #
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11 | 65a6f9b7 | Michael Hanselmann | # This program is distributed in the hope that it will be useful, but
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12 | 65a6f9b7 | Michael Hanselmann | # WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | 65a6f9b7 | Michael Hanselmann | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | 65a6f9b7 | Michael Hanselmann | # General Public License for more details.
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15 | 65a6f9b7 | Michael Hanselmann | #
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16 | 65a6f9b7 | Michael Hanselmann | # You should have received a copy of the GNU General Public License
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17 | 65a6f9b7 | Michael Hanselmann | # along with this program; if not, write to the Free Software
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18 | 65a6f9b7 | Michael Hanselmann | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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19 | 65a6f9b7 | Michael Hanselmann | # 02110-1301, USA.
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20 | 65a6f9b7 | Michael Hanselmann | |
21 | 65a6f9b7 | Michael Hanselmann | |
22 | 65a6f9b7 | Michael Hanselmann | """Base class for all hypervisors
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23 | 65a6f9b7 | Michael Hanselmann |
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24 | 205ab586 | Iustin Pop | The syntax for the _CHECK variables and the contents of the PARAMETERS
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25 | 205ab586 | Iustin Pop | dict is the same, see the docstring for L{BaseHypervisor.PARAMETERS}.
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26 | 205ab586 | Iustin Pop |
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27 | 205ab586 | Iustin Pop | @var _FILE_CHECK: stub for file checks, without the required flag
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28 | 205ab586 | Iustin Pop | @var _DIR_CHECK: stub for directory checks, without the required flag
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29 | 205ab586 | Iustin Pop | @var REQ_FILE_CHECK: mandatory file parameter
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30 | 205ab586 | Iustin Pop | @var OPT_FILE_CHECK: optional file parameter
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31 | 205ab586 | Iustin Pop | @var REQ_DIR_CHECK: mandatory directory parametr
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32 | 205ab586 | Iustin Pop | @var OPT_DIR_CHECK: optional directory parameter
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33 | 205ab586 | Iustin Pop | @var NO_CHECK: parameter without any checks at all
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34 | 205ab586 | Iustin Pop | @var REQUIRED_CHECK: parameter required to exist (and non-false), but
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35 | 205ab586 | Iustin Pop | without other checks; beware that this can't be used for boolean
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36 | 205ab586 | Iustin Pop | parameters, where you should use NO_CHECK or a custom checker
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37 | 205ab586 | Iustin Pop |
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38 | 65a6f9b7 | Michael Hanselmann | """
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39 | 65a6f9b7 | Michael Hanselmann | |
40 | 205ab586 | Iustin Pop | import os |
41 | 572e52bf | Iustin Pop | import re |
42 | 29921401 | Iustin Pop | import logging |
43 | 572e52bf | Iustin Pop | |
44 | 572e52bf | Iustin Pop | |
45 | f48148c3 | Iustin Pop | from ganeti import errors |
46 | 205ab586 | Iustin Pop | from ganeti import utils |
47 | e71b9ef4 | Iustin Pop | from ganeti import constants |
48 | 205ab586 | Iustin Pop | |
49 | 205ab586 | Iustin Pop | |
50 | e3ed5316 | Balazs Lecz | def _IsCpuMaskWellFormed(cpu_mask): |
51 | b9511385 | Tsachy Shacham | """Verifies if the given single CPU mask is valid
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52 | b9511385 | Tsachy Shacham |
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53 | b9511385 | Tsachy Shacham | The single CPU mask should be in the form "a,b,c,d", where each
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54 | b9511385 | Tsachy Shacham | letter is a positive number or range.
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55 | b9511385 | Tsachy Shacham |
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56 | b9511385 | Tsachy Shacham | """
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57 | e3ed5316 | Balazs Lecz | try:
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58 | e3ed5316 | Balazs Lecz | cpu_list = utils.ParseCpuMask(cpu_mask) |
59 | e3ed5316 | Balazs Lecz | except errors.ParseError, _:
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60 | e3ed5316 | Balazs Lecz | return False |
61 | e3ed5316 | Balazs Lecz | return isinstance(cpu_list, list) and len(cpu_list) > 0 |
62 | e3ed5316 | Balazs Lecz | |
63 | e3ed5316 | Balazs Lecz | |
64 | b9511385 | Tsachy Shacham | def _IsMultiCpuMaskWellFormed(cpu_mask): |
65 | b9511385 | Tsachy Shacham | """Verifies if the given multiple CPU mask is valid
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66 | b9511385 | Tsachy Shacham |
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67 | b9511385 | Tsachy Shacham | A valid multiple CPU mask is in the form "a:b:c:d", where each
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68 | b9511385 | Tsachy Shacham | letter is a single CPU mask.
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69 | b9511385 | Tsachy Shacham |
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70 | b9511385 | Tsachy Shacham | """
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71 | b9511385 | Tsachy Shacham | try:
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72 | b9511385 | Tsachy Shacham | utils.ParseMultiCpuMask(cpu_mask) |
73 | b9511385 | Tsachy Shacham | except errors.ParseError, _:
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74 | b9511385 | Tsachy Shacham | return False |
75 | b9511385 | Tsachy Shacham | |
76 | b9511385 | Tsachy Shacham | return True |
77 | b9511385 | Tsachy Shacham | |
78 | b9511385 | Tsachy Shacham | |
79 | 205ab586 | Iustin Pop | # Read the BaseHypervisor.PARAMETERS docstring for the syntax of the
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80 | 205ab586 | Iustin Pop | # _CHECK values
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81 | 205ab586 | Iustin Pop | |
82 | 364e1664 | Jose A. Lopes | # must be a file
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83 | 17c61836 | Guido Trotter | _FILE_CHECK = (utils.IsNormAbsPath, "must be an absolute normalized path",
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84 | 5ae4945a | Iustin Pop | os.path.isfile, "not found or not a file")
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85 | 205ab586 | Iustin Pop | |
86 | f15a6b03 | Jose A. Lopes | # must be a file or a URL
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87 | 364e1664 | Jose A. Lopes | _FILE_OR_URL_CHECK = (lambda x: utils.IsNormAbsPath(x) or utils.IsUrl(x), |
88 | f15a6b03 | Jose A. Lopes | "must be an absolute normalized path or a URL",
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89 | 364e1664 | Jose A. Lopes | lambda x: os.path.isfile(x) or utils.IsUrl(x), |
90 | f15a6b03 | Jose A. Lopes | "not found or not a file or URL")
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91 | f15a6b03 | Jose A. Lopes | |
92 | 205ab586 | Iustin Pop | # must be a directory
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93 | 17c61836 | Guido Trotter | _DIR_CHECK = (utils.IsNormAbsPath, "must be an absolute normalized path",
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94 | 5ae4945a | Iustin Pop | os.path.isdir, "not found or not a directory")
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95 | 205ab586 | Iustin Pop | |
96 | e3ed5316 | Balazs Lecz | # CPU mask must be well-formed
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97 | e3ed5316 | Balazs Lecz | # TODO: implement node level check for the CPU mask
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98 | e3ed5316 | Balazs Lecz | _CPU_MASK_CHECK = (_IsCpuMaskWellFormed, |
99 | e3ed5316 | Balazs Lecz | "CPU mask definition is not well-formed",
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100 | e3ed5316 | Balazs Lecz | None, None) |
101 | e3ed5316 | Balazs Lecz | |
102 | b9511385 | Tsachy Shacham | # Multiple CPU mask must be well-formed
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103 | b9511385 | Tsachy Shacham | _MULTI_CPU_MASK_CHECK = (_IsMultiCpuMaskWellFormed, |
104 | b9511385 | Tsachy Shacham | "Multiple CPU mask definition is not well-formed",
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105 | b9511385 | Tsachy Shacham | None, None) |
106 | b9511385 | Tsachy Shacham | |
107 | e2d14329 | Andrea Spadaccini | # Check for validity of port number
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108 | e2d14329 | Andrea Spadaccini | _NET_PORT_CHECK = (lambda x: 0 < x < 65535, "invalid port number", |
109 | e2d14329 | Andrea Spadaccini | None, None) |
110 | e2d14329 | Andrea Spadaccini | |
111 | 2c368f28 | Guido Trotter | # Check that an integer is non negative
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112 | 2c368f28 | Guido Trotter | _NONNEGATIVE_INT_CHECK = (lambda x: x >= 0, "cannot be negative", None, None) |
113 | 2c368f28 | Guido Trotter | |
114 | 205ab586 | Iustin Pop | # nice wrappers for users
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115 | 205ab586 | Iustin Pop | REQ_FILE_CHECK = (True, ) + _FILE_CHECK
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116 | 205ab586 | Iustin Pop | OPT_FILE_CHECK = (False, ) + _FILE_CHECK
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117 | f15a6b03 | Jose A. Lopes | REQ_FILE_OR_URL_CHECK = (True, ) + _FILE_OR_URL_CHECK
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118 | f15a6b03 | Jose A. Lopes | OPT_FILE_OR_URL_CHECK = (False, ) + _FILE_OR_URL_CHECK
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119 | 205ab586 | Iustin Pop | REQ_DIR_CHECK = (True, ) + _DIR_CHECK
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120 | 205ab586 | Iustin Pop | OPT_DIR_CHECK = (False, ) + _DIR_CHECK
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121 | e2d14329 | Andrea Spadaccini | REQ_NET_PORT_CHECK = (True, ) + _NET_PORT_CHECK
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122 | e2d14329 | Andrea Spadaccini | OPT_NET_PORT_CHECK = (False, ) + _NET_PORT_CHECK
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123 | e3ed5316 | Balazs Lecz | REQ_CPU_MASK_CHECK = (True, ) + _CPU_MASK_CHECK
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124 | e2d14329 | Andrea Spadaccini | OPT_CPU_MASK_CHECK = (False, ) + _CPU_MASK_CHECK
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125 | b9511385 | Tsachy Shacham | REQ_MULTI_CPU_MASK_CHECK = (True, ) + _MULTI_CPU_MASK_CHECK
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126 | b9511385 | Tsachy Shacham | OPT_MULTI_CPU_MASK_CHECK = (False, ) + _MULTI_CPU_MASK_CHECK
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127 | 2c368f28 | Guido Trotter | REQ_NONNEGATIVE_INT_CHECK = (True, ) + _NONNEGATIVE_INT_CHECK
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128 | 2c368f28 | Guido Trotter | OPT_NONNEGATIVE_INT_CHECK = (False, ) + _NONNEGATIVE_INT_CHECK
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129 | 205ab586 | Iustin Pop | |
130 | 205ab586 | Iustin Pop | # no checks at all
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131 | 205ab586 | Iustin Pop | NO_CHECK = (False, None, None, None, None) |
132 | 205ab586 | Iustin Pop | |
133 | 205ab586 | Iustin Pop | # required, but no other checks
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134 | 205ab586 | Iustin Pop | REQUIRED_CHECK = (True, None, None, None, None) |
135 | 205ab586 | Iustin Pop | |
136 | e71b9ef4 | Iustin Pop | # migration type
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137 | 783a6c0b | Iustin Pop | MIGRATION_MODE_CHECK = (True, lambda x: x in constants.HT_MIGRATION_MODES, |
138 | 783a6c0b | Iustin Pop | "invalid migration mode", None, None) |
139 | e71b9ef4 | Iustin Pop | |
140 | d73ef63f | Michael Hanselmann | |
141 | 205ab586 | Iustin Pop | def ParamInSet(required, my_set): |
142 | 205ab586 | Iustin Pop | """Builds parameter checker for set membership.
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143 | 205ab586 | Iustin Pop |
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144 | 205ab586 | Iustin Pop | @type required: boolean
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145 | 205ab586 | Iustin Pop | @param required: whether this is a required parameter
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146 | 205ab586 | Iustin Pop | @type my_set: tuple, list or set
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147 | 205ab586 | Iustin Pop | @param my_set: allowed values set
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148 | 205ab586 | Iustin Pop |
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149 | 205ab586 | Iustin Pop | """
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150 | 205ab586 | Iustin Pop | fn = lambda x: x in my_set |
151 | ab3e6da8 | Iustin Pop | err = ("The value must be one of: %s" % utils.CommaJoin(my_set))
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152 | 205ab586 | Iustin Pop | return (required, fn, err, None, None) |
153 | f48148c3 | Iustin Pop | |
154 | f48148c3 | Iustin Pop | |
155 | a3f0f306 | Jose A. Lopes | class HvInstanceState(object): |
156 | a3f0f306 | Jose A. Lopes | RUNNING = 0
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157 | a3f0f306 | Jose A. Lopes | SHUTDOWN = 1
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158 | a3f0f306 | Jose A. Lopes | |
159 | a3f0f306 | Jose A. Lopes | @staticmethod
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160 | a3f0f306 | Jose A. Lopes | def IsRunning(s): |
161 | a3f0f306 | Jose A. Lopes | return s == HvInstanceState.RUNNING
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162 | a3f0f306 | Jose A. Lopes | |
163 | a3f0f306 | Jose A. Lopes | @staticmethod
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164 | a3f0f306 | Jose A. Lopes | def IsShutdown(s): |
165 | a3f0f306 | Jose A. Lopes | return s == HvInstanceState.SHUTDOWN
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166 | a3f0f306 | Jose A. Lopes | |
167 | a3f0f306 | Jose A. Lopes | |
168 | 65a6f9b7 | Michael Hanselmann | class BaseHypervisor(object): |
169 | 65a6f9b7 | Michael Hanselmann | """Abstract virtualisation technology interface
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170 | 65a6f9b7 | Michael Hanselmann |
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171 | f48148c3 | Iustin Pop | The goal is that all aspects of the virtualisation technology are
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172 | f48148c3 | Iustin Pop | abstracted away from the rest of code.
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173 | 65a6f9b7 | Michael Hanselmann |
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174 | 205ab586 | Iustin Pop | @cvar PARAMETERS: a dict of parameter name: check type; the check type is
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175 | 205ab586 | Iustin Pop | a five-tuple containing:
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176 | 205ab586 | Iustin Pop | - the required flag (boolean)
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177 | 205ab586 | Iustin Pop | - a function to check for syntax, that will be used in
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178 | 205ab586 | Iustin Pop | L{CheckParameterSyntax}, in the master daemon process
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179 | 205ab586 | Iustin Pop | - an error message for the above function
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180 | 205ab586 | Iustin Pop | - a function to check for parameter validity on the remote node,
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181 | 205ab586 | Iustin Pop | in the L{ValidateParameters} function
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182 | 205ab586 | Iustin Pop | - an error message for the above function
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183 | d271c6fd | Iustin Pop | @type CAN_MIGRATE: boolean
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184 | d271c6fd | Iustin Pop | @cvar CAN_MIGRATE: whether this hypervisor can do migration (either
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185 | d271c6fd | Iustin Pop | live or non-live)
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186 | 205ab586 | Iustin Pop |
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187 | 65a6f9b7 | Michael Hanselmann | """
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188 | 205ab586 | Iustin Pop | PARAMETERS = {} |
189 | e1b8653f | Guido Trotter | ANCILLARY_FILES = [] |
190 | 69ab2e12 | Guido Trotter | ANCILLARY_FILES_OPT = [] |
191 | d271c6fd | Iustin Pop | CAN_MIGRATE = False
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192 | f48148c3 | Iustin Pop | |
193 | 323f9095 | Stephen Shirley | def StartInstance(self, instance, block_devices, startup_paused): |
194 | 65a6f9b7 | Michael Hanselmann | """Start an instance."""
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195 | 65a6f9b7 | Michael Hanselmann | raise NotImplementedError |
196 | 65a6f9b7 | Michael Hanselmann | |
197 | bbcf7ad0 | Iustin Pop | def StopInstance(self, instance, force=False, retry=False, name=None): |
198 | 07b49e41 | Guido Trotter | """Stop an instance
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199 | 07b49e41 | Guido Trotter |
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200 | 07b49e41 | Guido Trotter | @type instance: L{objects.Instance}
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201 | 07b49e41 | Guido Trotter | @param instance: instance to stop
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202 | 07b49e41 | Guido Trotter | @type force: boolean
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203 | 07b49e41 | Guido Trotter | @param force: whether to do a "hard" stop (destroy)
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204 | 07b49e41 | Guido Trotter | @type retry: boolean
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205 | 07b49e41 | Guido Trotter | @param retry: whether this is just a retry call
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206 | bbcf7ad0 | Iustin Pop | @type name: string or None
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207 | bbcf7ad0 | Iustin Pop | @param name: if this parameter is passed, the the instance object
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208 | bbcf7ad0 | Iustin Pop | should not be used (will be passed as None), and the shutdown
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209 | bbcf7ad0 | Iustin Pop | must be done by name only
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210 | 059ed766 | Jose A. Lopes | @raise errors.HypervisorError: when a parameter is not valid or
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211 | 059ed766 | Jose A. Lopes | the instance failed to be stopped
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212 | 07b49e41 | Guido Trotter |
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213 | 07b49e41 | Guido Trotter | """
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214 | 65a6f9b7 | Michael Hanselmann | raise NotImplementedError |
215 | 65a6f9b7 | Michael Hanselmann | |
216 | f28ec899 | Guido Trotter | def CleanupInstance(self, instance_name): |
217 | f28ec899 | Guido Trotter | """Cleanup after a stopped instance
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218 | f28ec899 | Guido Trotter |
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219 | f28ec899 | Guido Trotter | This is an optional method, used by hypervisors that need to cleanup after
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220 | f28ec899 | Guido Trotter | an instance has been stopped.
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221 | f28ec899 | Guido Trotter |
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222 | f28ec899 | Guido Trotter | @type instance_name: string
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223 | f28ec899 | Guido Trotter | @param instance_name: instance name to cleanup after
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224 | f28ec899 | Guido Trotter |
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225 | f28ec899 | Guido Trotter | """
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226 | f28ec899 | Guido Trotter | pass
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227 | f28ec899 | Guido Trotter | |
228 | 65a6f9b7 | Michael Hanselmann | def RebootInstance(self, instance): |
229 | 65a6f9b7 | Michael Hanselmann | """Reboot an instance."""
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230 | 65a6f9b7 | Michael Hanselmann | raise NotImplementedError |
231 | 65a6f9b7 | Michael Hanselmann | |
232 | 58e356a9 | Helga Velroyen | def ListInstances(self, hvparams=None): |
233 | 65a6f9b7 | Michael Hanselmann | """Get the list of running instances."""
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234 | 65a6f9b7 | Michael Hanselmann | raise NotImplementedError |
235 | 65a6f9b7 | Michael Hanselmann | |
236 | 0bbec3af | Helga Velroyen | def GetInstanceInfo(self, instance_name, hvparams=None): |
237 | 65a6f9b7 | Michael Hanselmann | """Get instance properties.
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238 | 65a6f9b7 | Michael Hanselmann |
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239 | cd42d0ad | Guido Trotter | @type instance_name: string
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240 | c41eea6e | Iustin Pop | @param instance_name: the instance name
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241 | 0bbec3af | Helga Velroyen | @type hvparams: dict of strings
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242 | 0bbec3af | Helga Velroyen | @param hvparams: hvparams to be used with this instance
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243 | 65a6f9b7 | Michael Hanselmann |
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244 | 9d22cc90 | Jose A. Lopes | @rtype: (string, string, int, int, HvInstanceState, int)
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245 | c41eea6e | Iustin Pop | @return: tuple (name, id, memory, vcpus, state, times)
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246 | 65a6f9b7 | Michael Hanselmann |
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247 | 65a6f9b7 | Michael Hanselmann | """
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248 | 65a6f9b7 | Michael Hanselmann | raise NotImplementedError |
249 | 65a6f9b7 | Michael Hanselmann | |
250 | 0200a1af | Helga Velroyen | def GetAllInstancesInfo(self, hvparams=None): |
251 | 65a6f9b7 | Michael Hanselmann | """Get properties of all instances.
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252 | 65a6f9b7 | Michael Hanselmann |
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253 | 0200a1af | Helga Velroyen | @type hvparams: dict of strings
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254 | 0200a1af | Helga Velroyen | @param hvparams: hypervisor parameter
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255 | 9d22cc90 | Jose A. Lopes |
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256 | 9d22cc90 | Jose A. Lopes | @rtype: (string, string, int, int, HvInstanceState, int)
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257 | 9d22cc90 | Jose A. Lopes | @return: list of tuples (name, id, memory, vcpus, state, times)
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258 | c41eea6e | Iustin Pop |
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259 | 65a6f9b7 | Michael Hanselmann | """
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260 | 65a6f9b7 | Michael Hanselmann | raise NotImplementedError |
261 | 65a6f9b7 | Michael Hanselmann | |
262 | fac489a5 | Helga Velroyen | def GetNodeInfo(self, hvparams=None): |
263 | 65a6f9b7 | Michael Hanselmann | """Return information about the node.
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264 | 65a6f9b7 | Michael Hanselmann |
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265 | fac489a5 | Helga Velroyen | @type hvparams: dict of strings
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266 | fac489a5 | Helga Velroyen | @param hvparams: hypervisor parameters
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267 | fac489a5 | Helga Velroyen |
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268 | ef14e128 | Bernardo Dal Seno | @return: a dict with at least the following keys (memory values in MiB):
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269 | c41eea6e | Iustin Pop | - memory_total: the total memory size on the node
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270 | c41eea6e | Iustin Pop | - memory_free: the available memory on the node for instances
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271 | c41eea6e | Iustin Pop | - memory_dom0: the memory used by the node itself, if available
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272 | ef14e128 | Bernardo Dal Seno | - cpu_total: total number of CPUs
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273 | ff05ff94 | Bernardo Dal Seno | - cpu_dom0: number of CPUs used by the node OS
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274 | ef14e128 | Bernardo Dal Seno | - cpu_nodes: number of NUMA domains
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275 | ef14e128 | Bernardo Dal Seno | - cpu_sockets: number of physical CPU sockets
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276 | 65a6f9b7 | Michael Hanselmann |
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277 | 65a6f9b7 | Michael Hanselmann | """
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278 | 65a6f9b7 | Michael Hanselmann | raise NotImplementedError |
279 | 65a6f9b7 | Michael Hanselmann | |
280 | 637ce7f9 | Guido Trotter | @classmethod
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281 | c42be2c0 | Petr Pudlak | def GetInstanceConsole(cls, instance, primary_node, node_group, |
282 | c42be2c0 | Petr Pudlak | hvparams, beparams): |
283 | 55cc0a44 | Michael Hanselmann | """Return information for connecting to the console of an instance.
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284 | 65a6f9b7 | Michael Hanselmann |
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285 | 65a6f9b7 | Michael Hanselmann | """
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286 | 65a6f9b7 | Michael Hanselmann | raise NotImplementedError |
287 | 65a6f9b7 | Michael Hanselmann | |
288 | e1b8653f | Guido Trotter | @classmethod
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289 | e1b8653f | Guido Trotter | def GetAncillaryFiles(cls): |
290 | e1b8653f | Guido Trotter | """Return a list of ancillary files to be copied to all nodes as ancillary
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291 | e1b8653f | Guido Trotter | configuration files.
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292 | e1b8653f | Guido Trotter |
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293 | 69ab2e12 | Guido Trotter | @rtype: (list of absolute paths, list of absolute paths)
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294 | 69ab2e12 | Guido Trotter | @return: (all files, optional files)
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295 | e1b8653f | Guido Trotter |
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296 | e1b8653f | Guido Trotter | """
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297 | e1b8653f | Guido Trotter | # By default we return a member variable, so that if an hypervisor has just
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298 | e1b8653f | Guido Trotter | # a static list of files it doesn't have to override this function.
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299 | 69ab2e12 | Guido Trotter | assert set(cls.ANCILLARY_FILES).issuperset(cls.ANCILLARY_FILES_OPT), \ |
300 | 69ab2e12 | Guido Trotter | "Optional ancillary files must be a subset of ancillary files"
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301 | 69ab2e12 | Guido Trotter | |
302 | 69ab2e12 | Guido Trotter | return (cls.ANCILLARY_FILES, cls.ANCILLARY_FILES_OPT)
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303 | e1b8653f | Guido Trotter | |
304 | 75bf3149 | Helga Velroyen | def Verify(self, hvparams=None): |
305 | 65a6f9b7 | Michael Hanselmann | """Verify the hypervisor.
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306 | 65a6f9b7 | Michael Hanselmann |
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307 | 75bf3149 | Helga Velroyen | @type hvparams: dict of strings
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308 | 75bf3149 | Helga Velroyen | @param hvparams: hypervisor parameters to be verified against
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309 | 75bf3149 | Helga Velroyen |
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310 | cd04dfd2 | Michael Hanselmann | @return: Problem description if something is wrong, C{None} otherwise
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311 | cd04dfd2 | Michael Hanselmann |
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312 | 65a6f9b7 | Michael Hanselmann | """
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313 | 65a6f9b7 | Michael Hanselmann | raise NotImplementedError |
314 | 6e7275c0 | Iustin Pop | |
315 | b459a848 | Andrea Spadaccini | def MigrationInfo(self, instance): # pylint: disable=R0201,W0613 |
316 | cd42d0ad | Guido Trotter | """Get instance information to perform a migration.
|
317 | cd42d0ad | Guido Trotter |
|
318 | cd42d0ad | Guido Trotter | By default assume no information is needed.
|
319 | cd42d0ad | Guido Trotter |
|
320 | cd42d0ad | Guido Trotter | @type instance: L{objects.Instance}
|
321 | cd42d0ad | Guido Trotter | @param instance: instance to be migrated
|
322 | cd42d0ad | Guido Trotter | @rtype: string/data (opaque)
|
323 | cd42d0ad | Guido Trotter | @return: instance migration information - serialized form
|
324 | cd42d0ad | Guido Trotter |
|
325 | cd42d0ad | Guido Trotter | """
|
326 | d0c8c01d | Iustin Pop | return "" |
327 | cd42d0ad | Guido Trotter | |
328 | cd42d0ad | Guido Trotter | def AcceptInstance(self, instance, info, target): |
329 | cd42d0ad | Guido Trotter | """Prepare to accept an instance.
|
330 | cd42d0ad | Guido Trotter |
|
331 | cd42d0ad | Guido Trotter | By default assume no preparation is needed.
|
332 | cd42d0ad | Guido Trotter |
|
333 | cd42d0ad | Guido Trotter | @type instance: L{objects.Instance}
|
334 | cd42d0ad | Guido Trotter | @param instance: instance to be accepted
|
335 | cd42d0ad | Guido Trotter | @type info: string/data (opaque)
|
336 | cd42d0ad | Guido Trotter | @param info: migration information, from the source node
|
337 | cd42d0ad | Guido Trotter | @type target: string
|
338 | cd42d0ad | Guido Trotter | @param target: target host (usually ip), on this node
|
339 | cd42d0ad | Guido Trotter |
|
340 | cd42d0ad | Guido Trotter | """
|
341 | cd42d0ad | Guido Trotter | pass
|
342 | cd42d0ad | Guido Trotter | |
343 | b990eedd | Guido Trotter | def BalloonInstanceMemory(self, instance, mem): |
344 | b990eedd | Guido Trotter | """Balloon an instance memory to a certain value.
|
345 | b990eedd | Guido Trotter |
|
346 | b990eedd | Guido Trotter | @type instance: L{objects.Instance}
|
347 | b990eedd | Guido Trotter | @param instance: instance to be accepted
|
348 | b990eedd | Guido Trotter | @type mem: int
|
349 | b990eedd | Guido Trotter | @param mem: actual memory size to use for instance runtime
|
350 | b990eedd | Guido Trotter |
|
351 | b990eedd | Guido Trotter | """
|
352 | b990eedd | Guido Trotter | raise NotImplementedError |
353 | b990eedd | Guido Trotter | |
354 | 6a1434d7 | Andrea Spadaccini | def FinalizeMigrationDst(self, instance, info, success): |
355 | 6a1434d7 | Andrea Spadaccini | """Finalize the instance migration on the target node.
|
356 | cd42d0ad | Guido Trotter |
|
357 | cd42d0ad | Guido Trotter | Should finalize or revert any preparation done to accept the instance.
|
358 | cd42d0ad | Guido Trotter | Since by default we do no preparation, we also don't have anything to do
|
359 | cd42d0ad | Guido Trotter |
|
360 | cd42d0ad | Guido Trotter | @type instance: L{objects.Instance}
|
361 | fea922fa | Guido Trotter | @param instance: instance whose migration is being finalized
|
362 | cd42d0ad | Guido Trotter | @type info: string/data (opaque)
|
363 | cd42d0ad | Guido Trotter | @param info: migration information, from the source node
|
364 | cd42d0ad | Guido Trotter | @type success: boolean
|
365 | cd42d0ad | Guido Trotter | @param success: whether the migration was a success or a failure
|
366 | cd42d0ad | Guido Trotter |
|
367 | cd42d0ad | Guido Trotter | """
|
368 | cd42d0ad | Guido Trotter | pass
|
369 | cd42d0ad | Guido Trotter | |
370 | bc0a2284 | Helga Velroyen | def MigrateInstance(self, cluster_name, instance, target, live): |
371 | 6e7275c0 | Iustin Pop | """Migrate an instance.
|
372 | 6e7275c0 | Iustin Pop |
|
373 | bc0a2284 | Helga Velroyen | @type cluster_name: string
|
374 | bc0a2284 | Helga Velroyen | @param cluster_name: name of the cluster
|
375 | 3a488770 | Iustin Pop | @type instance: L{objects.Instance}
|
376 | 9044275a | Michael Hanselmann | @param instance: the instance to be migrated
|
377 | cd42d0ad | Guido Trotter | @type target: string
|
378 | cd42d0ad | Guido Trotter | @param target: hostname (usually ip) of the target node
|
379 | cd42d0ad | Guido Trotter | @type live: boolean
|
380 | cd42d0ad | Guido Trotter | @param live: whether to do a live or non-live migration
|
381 | 6e7275c0 | Iustin Pop |
|
382 | 6e7275c0 | Iustin Pop | """
|
383 | 6e7275c0 | Iustin Pop | raise NotImplementedError |
384 | f48148c3 | Iustin Pop | |
385 | 6a1434d7 | Andrea Spadaccini | def FinalizeMigrationSource(self, instance, success, live): |
386 | 6a1434d7 | Andrea Spadaccini | """Finalize the instance migration on the source node.
|
387 | 6a1434d7 | Andrea Spadaccini |
|
388 | 6a1434d7 | Andrea Spadaccini | @type instance: L{objects.Instance}
|
389 | 6a1434d7 | Andrea Spadaccini | @param instance: the instance that was migrated
|
390 | 6a1434d7 | Andrea Spadaccini | @type success: bool
|
391 | 6a1434d7 | Andrea Spadaccini | @param success: whether the migration succeeded or not
|
392 | 6a1434d7 | Andrea Spadaccini | @type live: bool
|
393 | 6a1434d7 | Andrea Spadaccini | @param live: whether the user requested a live migration or not
|
394 | 6a1434d7 | Andrea Spadaccini |
|
395 | 6a1434d7 | Andrea Spadaccini | """
|
396 | 6a1434d7 | Andrea Spadaccini | pass
|
397 | 6a1434d7 | Andrea Spadaccini | |
398 | 6a1434d7 | Andrea Spadaccini | def GetMigrationStatus(self, instance): |
399 | 6a1434d7 | Andrea Spadaccini | """Get the migration status
|
400 | 6a1434d7 | Andrea Spadaccini |
|
401 | 6a1434d7 | Andrea Spadaccini | @type instance: L{objects.Instance}
|
402 | 6a1434d7 | Andrea Spadaccini | @param instance: the instance that is being migrated
|
403 | 6a1434d7 | Andrea Spadaccini | @rtype: L{objects.MigrationStatus}
|
404 | 6a1434d7 | Andrea Spadaccini | @return: the status of the current migration (one of
|
405 | 6a1434d7 | Andrea Spadaccini | L{constants.HV_MIGRATION_VALID_STATUSES}), plus any additional
|
406 | 6a1434d7 | Andrea Spadaccini | progress info that can be retrieved from the hypervisor
|
407 | 6a1434d7 | Andrea Spadaccini |
|
408 | 6a1434d7 | Andrea Spadaccini | """
|
409 | 6a1434d7 | Andrea Spadaccini | raise NotImplementedError |
410 | 6a1434d7 | Andrea Spadaccini | |
411 | 30b12688 | Jose A. Lopes | def _InstanceStartupMemory(self, instance): |
412 | 61eb1a46 | Guido Trotter | """Get the correct startup memory for an instance
|
413 | 61eb1a46 | Guido Trotter |
|
414 | 61eb1a46 | Guido Trotter | This function calculates how much memory an instance should be started
|
415 | 61eb1a46 | Guido Trotter | with, making sure it's a value between the minimum and the maximum memory,
|
416 | 61eb1a46 | Guido Trotter | but also trying to use no more than the current free memory on the node.
|
417 | 61eb1a46 | Guido Trotter |
|
418 | 61eb1a46 | Guido Trotter | @type instance: L{objects.Instance}
|
419 | 61eb1a46 | Guido Trotter | @param instance: the instance that is being started
|
420 | 61eb1a46 | Guido Trotter | @rtype: integer
|
421 | 61eb1a46 | Guido Trotter | @return: memory the instance should be started with
|
422 | 61eb1a46 | Guido Trotter |
|
423 | 61eb1a46 | Guido Trotter | """
|
424 | 30b12688 | Jose A. Lopes | free_memory = self.GetNodeInfo(hvparams=instance.hvparams)["memory_free"] |
425 | 61eb1a46 | Guido Trotter | max_start_mem = min(instance.beparams[constants.BE_MAXMEM], free_memory)
|
426 | 61eb1a46 | Guido Trotter | start_mem = max(instance.beparams[constants.BE_MINMEM], max_start_mem)
|
427 | 61eb1a46 | Guido Trotter | return start_mem
|
428 | 61eb1a46 | Guido Trotter | |
429 | f48148c3 | Iustin Pop | @classmethod
|
430 | f48148c3 | Iustin Pop | def CheckParameterSyntax(cls, hvparams): |
431 | f48148c3 | Iustin Pop | """Check the given parameters for validity.
|
432 | f48148c3 | Iustin Pop |
|
433 | f48148c3 | Iustin Pop | This should check the passed set of parameters for
|
434 | f48148c3 | Iustin Pop | validity. Classes should extend, not replace, this function.
|
435 | f48148c3 | Iustin Pop |
|
436 | f48148c3 | Iustin Pop | @type hvparams: dict
|
437 | f48148c3 | Iustin Pop | @param hvparams: dictionary with parameter names/value
|
438 | f48148c3 | Iustin Pop | @raise errors.HypervisorError: when a parameter is not valid
|
439 | f48148c3 | Iustin Pop |
|
440 | f48148c3 | Iustin Pop | """
|
441 | f48148c3 | Iustin Pop | for key in hvparams: |
442 | f48148c3 | Iustin Pop | if key not in cls.PARAMETERS: |
443 | 205ab586 | Iustin Pop | raise errors.HypervisorError("Parameter '%s' is not supported" % key) |
444 | 205ab586 | Iustin Pop | |
445 | 205ab586 | Iustin Pop | # cheap tests that run on the master, should not access the world
|
446 | 205ab586 | Iustin Pop | for name, (required, check_fn, errstr, _, _) in cls.PARAMETERS.items(): |
447 | 205ab586 | Iustin Pop | if name not in hvparams: |
448 | 205ab586 | Iustin Pop | raise errors.HypervisorError("Parameter '%s' is missing" % name) |
449 | 205ab586 | Iustin Pop | value = hvparams[name] |
450 | 205ab586 | Iustin Pop | if not required and not value: |
451 | 205ab586 | Iustin Pop | continue
|
452 | 205ab586 | Iustin Pop | if not value: |
453 | 205ab586 | Iustin Pop | raise errors.HypervisorError("Parameter '%s' is required but" |
454 | 205ab586 | Iustin Pop | " is currently not defined" % (name, ))
|
455 | 205ab586 | Iustin Pop | if check_fn is not None and not check_fn(value): |
456 | 205ab586 | Iustin Pop | raise errors.HypervisorError("Parameter '%s' fails syntax" |
457 | 205ab586 | Iustin Pop | " check: %s (current value: '%s')" %
|
458 | 205ab586 | Iustin Pop | (name, errstr, value)) |
459 | 205ab586 | Iustin Pop | |
460 | 205ab586 | Iustin Pop | @classmethod
|
461 | 205ab586 | Iustin Pop | def ValidateParameters(cls, hvparams): |
462 | f48148c3 | Iustin Pop | """Check the given parameters for validity.
|
463 | f48148c3 | Iustin Pop |
|
464 | f48148c3 | Iustin Pop | This should check the passed set of parameters for
|
465 | f48148c3 | Iustin Pop | validity. Classes should extend, not replace, this function.
|
466 | f48148c3 | Iustin Pop |
|
467 | f48148c3 | Iustin Pop | @type hvparams: dict
|
468 | f48148c3 | Iustin Pop | @param hvparams: dictionary with parameter names/value
|
469 | f48148c3 | Iustin Pop | @raise errors.HypervisorError: when a parameter is not valid
|
470 | f48148c3 | Iustin Pop |
|
471 | f48148c3 | Iustin Pop | """
|
472 | 205ab586 | Iustin Pop | for name, (required, _, _, check_fn, errstr) in cls.PARAMETERS.items(): |
473 | 205ab586 | Iustin Pop | value = hvparams[name] |
474 | 205ab586 | Iustin Pop | if not required and not value: |
475 | 205ab586 | Iustin Pop | continue
|
476 | 205ab586 | Iustin Pop | if check_fn is not None and not check_fn(value): |
477 | 205ab586 | Iustin Pop | raise errors.HypervisorError("Parameter '%s' fails" |
478 | 205ab586 | Iustin Pop | " validation: %s (current value: '%s')" %
|
479 | 205ab586 | Iustin Pop | (name, errstr, value)) |
480 | 572e52bf | Iustin Pop | |
481 | f5118ade | Iustin Pop | @classmethod
|
482 | 8ef418bb | Helga Velroyen | def PowercycleNode(cls, hvparams=None): |
483 | f5118ade | Iustin Pop | """Hard powercycle a node using hypervisor specific methods.
|
484 | f5118ade | Iustin Pop |
|
485 | f5118ade | Iustin Pop | This method should hard powercycle the node, using whatever
|
486 | f5118ade | Iustin Pop | methods the hypervisor provides. Note that this means that all
|
487 | f5118ade | Iustin Pop | instances running on the node must be stopped too.
|
488 | f5118ade | Iustin Pop |
|
489 | 8ef418bb | Helga Velroyen | @type hvparams: dict of strings
|
490 | 8ef418bb | Helga Velroyen | @param hvparams: hypervisor params to be used on this node
|
491 | 8ef418bb | Helga Velroyen |
|
492 | f5118ade | Iustin Pop | """
|
493 | f5118ade | Iustin Pop | raise NotImplementedError |
494 | f5118ade | Iustin Pop | |
495 | 94fed7da | Iustin Pop | @staticmethod
|
496 | 23cb5697 | Michele Tartara | def GetLinuxNodeInfo(meminfo="/proc/meminfo", cpuinfo="/proc/cpuinfo"): |
497 | 572e52bf | Iustin Pop | """For linux systems, return actual OS information.
|
498 | 572e52bf | Iustin Pop |
|
499 | 572e52bf | Iustin Pop | This is an abstraction for all non-hypervisor-based classes, where
|
500 | 572e52bf | Iustin Pop | the node actually sees all the memory and CPUs via the /proc
|
501 | 572e52bf | Iustin Pop | interface and standard commands. The other case if for example
|
502 | 572e52bf | Iustin Pop | xen, where you only see the hardware resources via xen-specific
|
503 | 572e52bf | Iustin Pop | tools.
|
504 | 572e52bf | Iustin Pop |
|
505 | 23cb5697 | Michele Tartara | @param meminfo: name of the file containing meminfo
|
506 | 23cb5697 | Michele Tartara | @type meminfo: string
|
507 | 23cb5697 | Michele Tartara | @param cpuinfo: name of the file containing cpuinfo
|
508 | 23cb5697 | Michele Tartara | @type cpuinfo: string
|
509 | 572e52bf | Iustin Pop | @return: a dict with the following keys (values in MiB):
|
510 | 572e52bf | Iustin Pop | - memory_total: the total memory size on the node
|
511 | 572e52bf | Iustin Pop | - memory_free: the available memory on the node for instances
|
512 | 572e52bf | Iustin Pop | - memory_dom0: the memory used by the node itself, if available
|
513 | ef14e128 | Bernardo Dal Seno | - cpu_total: total number of CPUs
|
514 | ff05ff94 | Bernardo Dal Seno | - cpu_dom0: number of CPUs used by the node OS
|
515 | ef14e128 | Bernardo Dal Seno | - cpu_nodes: number of NUMA domains
|
516 | ef14e128 | Bernardo Dal Seno | - cpu_sockets: number of physical CPU sockets
|
517 | 572e52bf | Iustin Pop |
|
518 | 572e52bf | Iustin Pop | """
|
519 | 572e52bf | Iustin Pop | try:
|
520 | 23cb5697 | Michele Tartara | data = utils.ReadFile(meminfo).splitlines() |
521 | 572e52bf | Iustin Pop | except EnvironmentError, err: |
522 | 572e52bf | Iustin Pop | raise errors.HypervisorError("Failed to list node info: %s" % (err,)) |
523 | 572e52bf | Iustin Pop | |
524 | 572e52bf | Iustin Pop | result = {} |
525 | 572e52bf | Iustin Pop | sum_free = 0
|
526 | 572e52bf | Iustin Pop | try:
|
527 | 572e52bf | Iustin Pop | for line in data: |
528 | 572e52bf | Iustin Pop | splitfields = line.split(":", 1) |
529 | 572e52bf | Iustin Pop | |
530 | 572e52bf | Iustin Pop | if len(splitfields) > 1: |
531 | 572e52bf | Iustin Pop | key = splitfields[0].strip()
|
532 | 572e52bf | Iustin Pop | val = splitfields[1].strip()
|
533 | d0c8c01d | Iustin Pop | if key == "MemTotal": |
534 | e687ec01 | Michael Hanselmann | result["memory_total"] = int(val.split()[0]) / 1024 |
535 | d0c8c01d | Iustin Pop | elif key in ("MemFree", "Buffers", "Cached"): |
536 | e687ec01 | Michael Hanselmann | sum_free += int(val.split()[0]) / 1024 |
537 | d0c8c01d | Iustin Pop | elif key == "Active": |
538 | e687ec01 | Michael Hanselmann | result["memory_dom0"] = int(val.split()[0]) / 1024 |
539 | 572e52bf | Iustin Pop | except (ValueError, TypeError), err: |
540 | 572e52bf | Iustin Pop | raise errors.HypervisorError("Failed to compute memory usage: %s" % |
541 | 572e52bf | Iustin Pop | (err,)) |
542 | d0c8c01d | Iustin Pop | result["memory_free"] = sum_free
|
543 | 572e52bf | Iustin Pop | |
544 | 572e52bf | Iustin Pop | cpu_total = 0
|
545 | 572e52bf | Iustin Pop | try:
|
546 | 23cb5697 | Michele Tartara | fh = open(cpuinfo)
|
547 | 572e52bf | Iustin Pop | try:
|
548 | 78f99abb | Michele Tartara | cpu_total = len(re.findall(r"(?m)^processor\s*:\s*[0-9]+\s*$", |
549 | 572e52bf | Iustin Pop | fh.read())) |
550 | 572e52bf | Iustin Pop | finally:
|
551 | 572e52bf | Iustin Pop | fh.close() |
552 | 572e52bf | Iustin Pop | except EnvironmentError, err: |
553 | 572e52bf | Iustin Pop | raise errors.HypervisorError("Failed to list node info: %s" % (err,)) |
554 | d0c8c01d | Iustin Pop | result["cpu_total"] = cpu_total
|
555 | ff05ff94 | Bernardo Dal Seno | # We assume that the node OS can access all the CPUs
|
556 | ff05ff94 | Bernardo Dal Seno | result["cpu_dom0"] = cpu_total
|
557 | 572e52bf | Iustin Pop | # FIXME: export correct data here
|
558 | d0c8c01d | Iustin Pop | result["cpu_nodes"] = 1 |
559 | d0c8c01d | Iustin Pop | result["cpu_sockets"] = 1 |
560 | 572e52bf | Iustin Pop | |
561 | 572e52bf | Iustin Pop | return result
|
562 | f5118ade | Iustin Pop | |
563 | f5118ade | Iustin Pop | @classmethod
|
564 | f5118ade | Iustin Pop | def LinuxPowercycle(cls): |
565 | f5118ade | Iustin Pop | """Linux-specific powercycle method.
|
566 | f5118ade | Iustin Pop |
|
567 | f5118ade | Iustin Pop | """
|
568 | f5118ade | Iustin Pop | try:
|
569 | f5118ade | Iustin Pop | fd = os.open("/proc/sysrq-trigger", os.O_WRONLY)
|
570 | f5118ade | Iustin Pop | try:
|
571 | f5118ade | Iustin Pop | os.write(fd, "b")
|
572 | f5118ade | Iustin Pop | finally:
|
573 | f5118ade | Iustin Pop | fd.close() |
574 | f5118ade | Iustin Pop | except OSError: |
575 | f5118ade | Iustin Pop | logging.exception("Can't open the sysrq-trigger file")
|
576 | f5118ade | Iustin Pop | result = utils.RunCmd(["reboot", "-n", "-f"]) |
577 | f5118ade | Iustin Pop | if not result: |
578 | f5118ade | Iustin Pop | logging.error("Can't run shutdown: %s", result.output)
|
579 | 53fde1ac | Iustin Pop | |
580 | 53fde1ac | Iustin Pop | @staticmethod
|
581 | 53fde1ac | Iustin Pop | def _FormatVerifyResults(msgs): |
582 | 53fde1ac | Iustin Pop | """Formats the verification results, given a list of errors.
|
583 | 53fde1ac | Iustin Pop |
|
584 | 53fde1ac | Iustin Pop | @param msgs: list of errors, possibly empty
|
585 | 53fde1ac | Iustin Pop | @return: overall problem description if something is wrong,
|
586 | 53fde1ac | Iustin Pop | C{None} otherwise
|
587 | 53fde1ac | Iustin Pop |
|
588 | 53fde1ac | Iustin Pop | """
|
589 | 53fde1ac | Iustin Pop | if msgs:
|
590 | 53fde1ac | Iustin Pop | return "; ".join(msgs) |
591 | 53fde1ac | Iustin Pop | else:
|
592 | 53fde1ac | Iustin Pop | return None |
593 | c5708931 | Dimitris Aragiorgis | |
594 | 50e0f1d9 | Dimitris Aragiorgis | # pylint: disable=R0201,W0613
|
595 | c5708931 | Dimitris Aragiorgis | def HotAddDevice(self, instance, dev_type, device, extra, seq): |
596 | c5708931 | Dimitris Aragiorgis | """Hot-add a device.
|
597 | c5708931 | Dimitris Aragiorgis |
|
598 | c5708931 | Dimitris Aragiorgis | """
|
599 | 50e0f1d9 | Dimitris Aragiorgis | raise errors.HotplugError("Hotplug is not supported by this hypervisor") |
600 | c5708931 | Dimitris Aragiorgis | |
601 | 50e0f1d9 | Dimitris Aragiorgis | # pylint: disable=R0201,W0613
|
602 | c5708931 | Dimitris Aragiorgis | def HotDelDevice(self, instance, dev_type, device, extra, seq): |
603 | c5708931 | Dimitris Aragiorgis | """Hot-del a device.
|
604 | c5708931 | Dimitris Aragiorgis |
|
605 | c5708931 | Dimitris Aragiorgis | """
|
606 | 50e0f1d9 | Dimitris Aragiorgis | raise errors.HotplugError("Hotplug is not supported by this hypervisor") |
607 | c5708931 | Dimitris Aragiorgis | |
608 | 50e0f1d9 | Dimitris Aragiorgis | # pylint: disable=R0201,W0613
|
609 | c5708931 | Dimitris Aragiorgis | def HotModDevice(self, instance, dev_type, device, extra, seq): |
610 | c5708931 | Dimitris Aragiorgis | """Hot-mod a device.
|
611 | c5708931 | Dimitris Aragiorgis |
|
612 | c5708931 | Dimitris Aragiorgis | """
|
613 | 50e0f1d9 | Dimitris Aragiorgis | raise errors.HotplugError("Hotplug is not supported by this hypervisor") |
614 | 50e0f1d9 | Dimitris Aragiorgis | |
615 | 50e0f1d9 | Dimitris Aragiorgis | # pylint: disable=R0201,W0613
|
616 | 50e0f1d9 | Dimitris Aragiorgis | def VerifyHotplugSupport(self, instance, action, dev_type): |
617 | 50e0f1d9 | Dimitris Aragiorgis | """Verifies that hotplug is supported.
|
618 | c5708931 | Dimitris Aragiorgis |
|
619 | 24711492 | Dimitris Aragiorgis | Given the target device and hotplug action checks if hotplug is
|
620 | 24711492 | Dimitris Aragiorgis | actually supported.
|
621 | 50e0f1d9 | Dimitris Aragiorgis |
|
622 | 50e0f1d9 | Dimitris Aragiorgis | @type instance: L{objects.Instance}
|
623 | 50e0f1d9 | Dimitris Aragiorgis | @param instance: the instance object
|
624 | 50e0f1d9 | Dimitris Aragiorgis | @type action: string
|
625 | 50e0f1d9 | Dimitris Aragiorgis | @param action: one of the supported hotplug commands
|
626 | 50e0f1d9 | Dimitris Aragiorgis | @type dev_type: string
|
627 | 50e0f1d9 | Dimitris Aragiorgis | @param dev_type: one of the supported device types to hotplug
|
628 | 50e0f1d9 | Dimitris Aragiorgis | @raise errors.HotplugError: if hotplugging is not supported
|
629 | c5708931 | Dimitris Aragiorgis |
|
630 | c5708931 | Dimitris Aragiorgis | """
|
631 | 24711492 | Dimitris Aragiorgis | raise errors.HotplugError("Hotplug is not supported.") |
632 | 24711492 | Dimitris Aragiorgis | |
633 | 24711492 | Dimitris Aragiorgis | def HotplugSupported(self, instance): |
634 | 24711492 | Dimitris Aragiorgis | """Checks if hotplug is supported.
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635 | 24711492 | Dimitris Aragiorgis |
|
636 | 24711492 | Dimitris Aragiorgis | By default is not. Currently only KVM hypervisor supports it.
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637 | 24711492 | Dimitris Aragiorgis |
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638 | 24711492 | Dimitris Aragiorgis | """
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639 | 50e0f1d9 | Dimitris Aragiorgis | raise errors.HotplugError("Hotplug is not supported by this hypervisor") |