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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 | """Functions used by the node daemon"""
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23 | a8083063 | Iustin Pop | |
24 | a8083063 | Iustin Pop | |
25 | a8083063 | Iustin Pop | import os |
26 | a8083063 | Iustin Pop | import os.path |
27 | a8083063 | Iustin Pop | import shutil |
28 | a8083063 | Iustin Pop | import time |
29 | a8083063 | Iustin Pop | import stat |
30 | a8083063 | Iustin Pop | import errno |
31 | a8083063 | Iustin Pop | import re |
32 | a8083063 | Iustin Pop | import subprocess |
33 | b544cfe0 | Iustin Pop | import random |
34 | 18682bca | Iustin Pop | import logging |
35 | 3b9e6a30 | Iustin Pop | import tempfile |
36 | a8083063 | Iustin Pop | |
37 | a8083063 | Iustin Pop | from ganeti import errors |
38 | a8083063 | Iustin Pop | from ganeti import utils |
39 | a8083063 | Iustin Pop | from ganeti import ssh |
40 | a8083063 | Iustin Pop | from ganeti import hypervisor |
41 | a8083063 | Iustin Pop | from ganeti import constants |
42 | a8083063 | Iustin Pop | from ganeti import bdev |
43 | a8083063 | Iustin Pop | from ganeti import objects |
44 | 880478f8 | Iustin Pop | from ganeti import ssconf |
45 | a8083063 | Iustin Pop | |
46 | a8083063 | Iustin Pop | |
47 | c657dcc9 | Michael Hanselmann | def _GetConfig(): |
48 | 10c2650b | Iustin Pop | """Simple wrapper to return a ConfigReader.
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49 | 10c2650b | Iustin Pop |
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50 | 10c2650b | Iustin Pop | @rtype: L{ssconf.SimpleConfigReader}
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51 | 10c2650b | Iustin Pop | @return: a SimpleConfigReader instance
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52 | 10c2650b | Iustin Pop |
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53 | 10c2650b | Iustin Pop | """
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54 | c657dcc9 | Michael Hanselmann | return ssconf.SimpleConfigReader()
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55 | c657dcc9 | Michael Hanselmann | |
56 | c657dcc9 | Michael Hanselmann | |
57 | 62c9ec92 | Iustin Pop | def _GetSshRunner(cluster_name): |
58 | 10c2650b | Iustin Pop | """Simple wrapper to return an SshRunner.
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59 | 10c2650b | Iustin Pop |
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60 | 10c2650b | Iustin Pop | @type cluster_name: str
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61 | 10c2650b | Iustin Pop | @param cluster_name: the cluster name, which is needed
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62 | 10c2650b | Iustin Pop | by the SshRunner constructor
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63 | 10c2650b | Iustin Pop | @rtype: L{ssh.SshRunner}
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64 | 10c2650b | Iustin Pop | @return: an SshRunner instance
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65 | 10c2650b | Iustin Pop |
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66 | 10c2650b | Iustin Pop | """
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67 | 62c9ec92 | Iustin Pop | return ssh.SshRunner(cluster_name)
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68 | c92b310a | Michael Hanselmann | |
69 | c92b310a | Michael Hanselmann | |
70 | 76ab5558 | Michael Hanselmann | def _CleanDirectory(path, exclude=[]): |
71 | 76ab5558 | Michael Hanselmann | """Removes all regular files in a directory.
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72 | 76ab5558 | Michael Hanselmann |
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73 | 10c2650b | Iustin Pop | @type path: str
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74 | 10c2650b | Iustin Pop | @param path: the directory to clean
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75 | 76ab5558 | Michael Hanselmann | @type exclude: list
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76 | 10c2650b | Iustin Pop | @param exclude: list of files to be excluded, defaults
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77 | 10c2650b | Iustin Pop | to the empty list
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78 | 10c2650b | Iustin Pop | @rtype: None
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79 | 76ab5558 | Michael Hanselmann |
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80 | 76ab5558 | Michael Hanselmann | """
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81 | 3956cee1 | Michael Hanselmann | if not os.path.isdir(path): |
82 | 3956cee1 | Michael Hanselmann | return
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83 | 76ab5558 | Michael Hanselmann | |
84 | 76ab5558 | Michael Hanselmann | # Normalize excluded paths
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85 | 76ab5558 | Michael Hanselmann | exclude = [os.path.normpath(i) for i in exclude] |
86 | 76ab5558 | Michael Hanselmann | |
87 | 3956cee1 | Michael Hanselmann | for rel_name in utils.ListVisibleFiles(path): |
88 | 76ab5558 | Michael Hanselmann | full_name = os.path.normpath(os.path.join(path, rel_name)) |
89 | 76ab5558 | Michael Hanselmann | if full_name in exclude: |
90 | 76ab5558 | Michael Hanselmann | continue
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91 | 3956cee1 | Michael Hanselmann | if os.path.isfile(full_name) and not os.path.islink(full_name): |
92 | 3956cee1 | Michael Hanselmann | utils.RemoveFile(full_name) |
93 | 3956cee1 | Michael Hanselmann | |
94 | 3956cee1 | Michael Hanselmann | |
95 | 1bc59f76 | Michael Hanselmann | def JobQueuePurge(): |
96 | 10c2650b | Iustin Pop | """Removes job queue files and archived jobs.
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97 | 10c2650b | Iustin Pop |
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98 | 10c2650b | Iustin Pop | @rtype: None
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99 | 24fc781f | Michael Hanselmann |
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100 | 24fc781f | Michael Hanselmann | """
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101 | 1bc59f76 | Michael Hanselmann | _CleanDirectory(constants.QUEUE_DIR, exclude=[constants.JOB_QUEUE_LOCK_FILE]) |
102 | 24fc781f | Michael Hanselmann | _CleanDirectory(constants.JOB_QUEUE_ARCHIVE_DIR) |
103 | 24fc781f | Michael Hanselmann | |
104 | 24fc781f | Michael Hanselmann | |
105 | bd1e4562 | Iustin Pop | def GetMasterInfo(): |
106 | bd1e4562 | Iustin Pop | """Returns master information.
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107 | bd1e4562 | Iustin Pop |
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108 | bd1e4562 | Iustin Pop | This is an utility function to compute master information, either
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109 | bd1e4562 | Iustin Pop | for consumption here or from the node daemon.
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110 | bd1e4562 | Iustin Pop |
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111 | bd1e4562 | Iustin Pop | @rtype: tuple
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112 | 10c2650b | Iustin Pop | @return: (master_netdev, master_ip, master_name) if we have a good
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113 | 10c2650b | Iustin Pop | configuration, otherwise (None, None, None)
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114 | b1b6ea87 | Iustin Pop |
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115 | b1b6ea87 | Iustin Pop | """
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116 | b1b6ea87 | Iustin Pop | try:
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117 | c657dcc9 | Michael Hanselmann | cfg = _GetConfig() |
118 | c657dcc9 | Michael Hanselmann | master_netdev = cfg.GetMasterNetdev() |
119 | c657dcc9 | Michael Hanselmann | master_ip = cfg.GetMasterIP() |
120 | c657dcc9 | Michael Hanselmann | master_node = cfg.GetMasterNode() |
121 | b1b6ea87 | Iustin Pop | except errors.ConfigurationError, err:
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122 | b1b6ea87 | Iustin Pop | logging.exception("Cluster configuration incomplete")
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123 | 0a70a72a | Iustin Pop | return (None, None, None) |
124 | bd1e4562 | Iustin Pop | return (master_netdev, master_ip, master_node)
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125 | b1b6ea87 | Iustin Pop | |
126 | b1b6ea87 | Iustin Pop | |
127 | 1c65840b | Iustin Pop | def StartMaster(start_daemons): |
128 | a8083063 | Iustin Pop | """Activate local node as master node.
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129 | a8083063 | Iustin Pop |
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130 | 1c65840b | Iustin Pop | The function will always try activate the IP address of the master
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131 | 10c2650b | Iustin Pop | (unless someone else has it). It will also start the master daemons,
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132 | 10c2650b | Iustin Pop | based on the start_daemons parameter.
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133 | 10c2650b | Iustin Pop |
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134 | 10c2650b | Iustin Pop | @type start_daemons: boolean
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135 | 10c2650b | Iustin Pop | @param start_daemons: whther to also start the master
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136 | 10c2650b | Iustin Pop | daemons (ganeti-masterd and ganeti-rapi)
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137 | 10c2650b | Iustin Pop | @rtype: None
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138 | a8083063 | Iustin Pop |
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139 | a8083063 | Iustin Pop | """
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140 | b1b6ea87 | Iustin Pop | ok = True
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141 | bd1e4562 | Iustin Pop | master_netdev, master_ip, _ = GetMasterInfo() |
142 | b1b6ea87 | Iustin Pop | if not master_netdev: |
143 | a8083063 | Iustin Pop | return False |
144 | a8083063 | Iustin Pop | |
145 | b1b6ea87 | Iustin Pop | if utils.TcpPing(master_ip, constants.DEFAULT_NODED_PORT):
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146 | caad16e2 | Iustin Pop | if utils.OwnIpAddress(master_ip):
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147 | b1b6ea87 | Iustin Pop | # we already have the ip:
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148 | b1b6ea87 | Iustin Pop | logging.debug("Already started")
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149 | b1b6ea87 | Iustin Pop | else:
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150 | b1b6ea87 | Iustin Pop | logging.error("Someone else has the master ip, not activating")
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151 | b1b6ea87 | Iustin Pop | ok = False
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152 | b1b6ea87 | Iustin Pop | else:
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153 | b1b6ea87 | Iustin Pop | result = utils.RunCmd(["ip", "address", "add", "%s/32" % master_ip, |
154 | b1b6ea87 | Iustin Pop | "dev", master_netdev, "label", |
155 | b1b6ea87 | Iustin Pop | "%s:0" % master_netdev])
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156 | b1b6ea87 | Iustin Pop | if result.failed:
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157 | b1b6ea87 | Iustin Pop | logging.error("Can't activate master IP: %s", result.output)
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158 | b1b6ea87 | Iustin Pop | ok = False
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159 | b1b6ea87 | Iustin Pop | |
160 | b1b6ea87 | Iustin Pop | result = utils.RunCmd(["arping", "-q", "-U", "-c 3", "-I", master_netdev, |
161 | b1b6ea87 | Iustin Pop | "-s", master_ip, master_ip])
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162 | b1b6ea87 | Iustin Pop | # we'll ignore the exit code of arping
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163 | b1b6ea87 | Iustin Pop | |
164 | b1b6ea87 | Iustin Pop | # and now start the master and rapi daemons
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165 | b1b6ea87 | Iustin Pop | if start_daemons:
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166 | b1b6ea87 | Iustin Pop | for daemon in 'ganeti-masterd', 'ganeti-rapi': |
167 | b1b6ea87 | Iustin Pop | result = utils.RunCmd([daemon]) |
168 | b1b6ea87 | Iustin Pop | if result.failed:
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169 | b1b6ea87 | Iustin Pop | logging.error("Can't start daemon %s: %s", daemon, result.output)
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170 | b1b6ea87 | Iustin Pop | ok = False
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171 | b1b6ea87 | Iustin Pop | return ok
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172 | a8083063 | Iustin Pop | |
173 | a8083063 | Iustin Pop | |
174 | 1c65840b | Iustin Pop | def StopMaster(stop_daemons): |
175 | a8083063 | Iustin Pop | """Deactivate this node as master.
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176 | a8083063 | Iustin Pop |
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177 | 1c65840b | Iustin Pop | The function will always try to deactivate the IP address of the
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178 | 10c2650b | Iustin Pop | master. It will also stop the master daemons depending on the
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179 | 10c2650b | Iustin Pop | stop_daemons parameter.
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180 | 10c2650b | Iustin Pop |
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181 | 10c2650b | Iustin Pop | @type stop_daemons: boolean
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182 | 10c2650b | Iustin Pop | @param stop_daemons: whether to also stop the master daemons
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183 | 10c2650b | Iustin Pop | (ganeti-masterd and ganeti-rapi)
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184 | 10c2650b | Iustin Pop | @rtype: None
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185 | a8083063 | Iustin Pop |
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186 | a8083063 | Iustin Pop | """
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187 | bd1e4562 | Iustin Pop | master_netdev, master_ip, _ = GetMasterInfo() |
188 | b1b6ea87 | Iustin Pop | if not master_netdev: |
189 | b1b6ea87 | Iustin Pop | return False |
190 | a8083063 | Iustin Pop | |
191 | b1b6ea87 | Iustin Pop | result = utils.RunCmd(["ip", "address", "del", "%s/32" % master_ip, |
192 | b1b6ea87 | Iustin Pop | "dev", master_netdev])
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193 | a8083063 | Iustin Pop | if result.failed:
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194 | 3b9e6a30 | Iustin Pop | logging.error("Can't remove the master IP, error: %s", result.output)
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195 | b1b6ea87 | Iustin Pop | # but otherwise ignore the failure
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196 | b1b6ea87 | Iustin Pop | |
197 | b1b6ea87 | Iustin Pop | if stop_daemons:
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198 | b1b6ea87 | Iustin Pop | # stop/kill the rapi and the master daemon
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199 | b1b6ea87 | Iustin Pop | for daemon in constants.RAPI_PID, constants.MASTERD_PID: |
200 | b1b6ea87 | Iustin Pop | utils.KillProcess(utils.ReadPidFile(utils.DaemonPidFileName(daemon))) |
201 | a8083063 | Iustin Pop | |
202 | a8083063 | Iustin Pop | return True |
203 | a8083063 | Iustin Pop | |
204 | a8083063 | Iustin Pop | |
205 | 9716fdce | Iustin Pop | def AddNode(dsa, dsapub, rsa, rsapub, sshkey, sshpub): |
206 | 7900ed01 | Iustin Pop | """Joins this node to the cluster.
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207 | a8083063 | Iustin Pop |
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208 | 7900ed01 | Iustin Pop | This does the following:
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209 | 7900ed01 | Iustin Pop | - updates the hostkeys of the machine (rsa and dsa)
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210 | 7900ed01 | Iustin Pop | - adds the ssh private key to the user
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211 | 7900ed01 | Iustin Pop | - adds the ssh public key to the users' authorized_keys file
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212 | a8083063 | Iustin Pop |
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213 | 10c2650b | Iustin Pop | @type dsa: str
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214 | 10c2650b | Iustin Pop | @param dsa: the DSA private key to write
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215 | 10c2650b | Iustin Pop | @type dsapub: str
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216 | 10c2650b | Iustin Pop | @param dsapub: the DSA public key to write
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217 | 10c2650b | Iustin Pop | @type rsa: str
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218 | 10c2650b | Iustin Pop | @param rsa: the RSA private key to write
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219 | 10c2650b | Iustin Pop | @type rsapub: str
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220 | 10c2650b | Iustin Pop | @param rsapub: the RSA public key to write
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221 | 10c2650b | Iustin Pop | @type sshkey: str
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222 | 10c2650b | Iustin Pop | @param sshkey: the SSH private key to write
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223 | 10c2650b | Iustin Pop | @type sshpub: str
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224 | 10c2650b | Iustin Pop | @param sshpub: the SSH public key to write
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225 | 10c2650b | Iustin Pop | @rtype: boolean
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226 | 10c2650b | Iustin Pop | @return: the success of the operation
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227 | 10c2650b | Iustin Pop |
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228 | 7900ed01 | Iustin Pop | """
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229 | 70d9e3d8 | Iustin Pop | sshd_keys = [(constants.SSH_HOST_RSA_PRIV, rsa, 0600),
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230 | 70d9e3d8 | Iustin Pop | (constants.SSH_HOST_RSA_PUB, rsapub, 0644),
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231 | 70d9e3d8 | Iustin Pop | (constants.SSH_HOST_DSA_PRIV, dsa, 0600),
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232 | 70d9e3d8 | Iustin Pop | (constants.SSH_HOST_DSA_PUB, dsapub, 0644)]
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233 | 7900ed01 | Iustin Pop | for name, content, mode in sshd_keys: |
234 | 70d9e3d8 | Iustin Pop | utils.WriteFile(name, data=content, mode=mode) |
235 | a8083063 | Iustin Pop | |
236 | 70d9e3d8 | Iustin Pop | try:
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237 | 70d9e3d8 | Iustin Pop | priv_key, pub_key, auth_keys = ssh.GetUserFiles(constants.GANETI_RUNAS, |
238 | 70d9e3d8 | Iustin Pop | mkdir=True)
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239 | 70d9e3d8 | Iustin Pop | except errors.OpExecError, err:
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240 | 18682bca | Iustin Pop | logging.exception("Error while processing user ssh files")
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241 | 70d9e3d8 | Iustin Pop | return False |
242 | a8083063 | Iustin Pop | |
243 | 70d9e3d8 | Iustin Pop | for name, content in [(priv_key, sshkey), (pub_key, sshpub)]: |
244 | 70d9e3d8 | Iustin Pop | utils.WriteFile(name, data=content, mode=0600)
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245 | a8083063 | Iustin Pop | |
246 | 70d9e3d8 | Iustin Pop | utils.AddAuthorizedKey(auth_keys, sshpub) |
247 | a8083063 | Iustin Pop | |
248 | f491c3a8 | Michael Hanselmann | utils.RunCmd([constants.SSH_INITD_SCRIPT, "restart"])
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249 | a8083063 | Iustin Pop | |
250 | a8083063 | Iustin Pop | return True |
251 | a8083063 | Iustin Pop | |
252 | a8083063 | Iustin Pop | |
253 | a8083063 | Iustin Pop | def LeaveCluster(): |
254 | 10c2650b | Iustin Pop | """Cleans up and remove the current node.
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255 | 10c2650b | Iustin Pop |
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256 | 10c2650b | Iustin Pop | This function cleans up and prepares the current node to be removed
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257 | 10c2650b | Iustin Pop | from the cluster.
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258 | 10c2650b | Iustin Pop |
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259 | 10c2650b | Iustin Pop | If processing is successful, then it raises an
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260 | 10c2650b | Iustin Pop | L{errors.GanetiQuitException} which is used as a special case to
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261 | 10c2650b | Iustin Pop | shutdown the node daemon.
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262 | a8083063 | Iustin Pop |
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263 | a8083063 | Iustin Pop | """
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264 | f78346f5 | Michael Hanselmann | _CleanDirectory(constants.DATA_DIR) |
265 | 1bc59f76 | Michael Hanselmann | JobQueuePurge() |
266 | f78346f5 | Michael Hanselmann | |
267 | 70d9e3d8 | Iustin Pop | try:
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268 | 70d9e3d8 | Iustin Pop | priv_key, pub_key, auth_keys = ssh.GetUserFiles(constants.GANETI_RUNAS) |
269 | 18682bca | Iustin Pop | except errors.OpExecError:
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270 | 18682bca | Iustin Pop | logging.exception("Error while processing ssh files")
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271 | 7900ed01 | Iustin Pop | return
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272 | 7900ed01 | Iustin Pop | |
273 | 70d9e3d8 | Iustin Pop | f = open(pub_key, 'r') |
274 | a8083063 | Iustin Pop | try:
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275 | 70d9e3d8 | Iustin Pop | utils.RemoveAuthorizedKey(auth_keys, f.read(8192))
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276 | a8083063 | Iustin Pop | finally:
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277 | a8083063 | Iustin Pop | f.close() |
278 | a8083063 | Iustin Pop | |
279 | 70d9e3d8 | Iustin Pop | utils.RemoveFile(priv_key) |
280 | 70d9e3d8 | Iustin Pop | utils.RemoveFile(pub_key) |
281 | a8083063 | Iustin Pop | |
282 | 6d8b6238 | Guido Trotter | # Return a reassuring string to the caller, and quit
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283 | 6d8b6238 | Guido Trotter | raise errors.QuitGanetiException(False, 'Shutdown scheduled') |
284 | 6d8b6238 | Guido Trotter | |
285 | a8083063 | Iustin Pop | |
286 | e69d05fd | Iustin Pop | def GetNodeInfo(vgname, hypervisor_type): |
287 | 2f8598a5 | Alexander Schreiber | """Gives back a hash with different informations about the node.
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288 | a8083063 | Iustin Pop |
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289 | e69d05fd | Iustin Pop | @type vgname: C{string}
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290 | e69d05fd | Iustin Pop | @param vgname: the name of the volume group to ask for disk space information
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291 | e69d05fd | Iustin Pop | @type hypervisor_type: C{str}
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292 | e69d05fd | Iustin Pop | @param hypervisor_type: the name of the hypervisor to ask for
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293 | e69d05fd | Iustin Pop | memory information
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294 | e69d05fd | Iustin Pop | @rtype: C{dict}
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295 | e69d05fd | Iustin Pop | @return: dictionary with the following keys:
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296 | e69d05fd | Iustin Pop | - vg_size is the size of the configured volume group in MiB
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297 | e69d05fd | Iustin Pop | - vg_free is the free size of the volume group in MiB
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298 | e69d05fd | Iustin Pop | - memory_dom0 is the memory allocated for domain0 in MiB
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299 | e69d05fd | Iustin Pop | - memory_free is the currently available (free) ram in MiB
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300 | e69d05fd | Iustin Pop | - memory_total is the total number of ram in MiB
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301 | a8083063 | Iustin Pop |
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302 | 098c0958 | Michael Hanselmann | """
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303 | a8083063 | Iustin Pop | outputarray = {} |
304 | a8083063 | Iustin Pop | vginfo = _GetVGInfo(vgname) |
305 | a8083063 | Iustin Pop | outputarray['vg_size'] = vginfo['vg_size'] |
306 | a8083063 | Iustin Pop | outputarray['vg_free'] = vginfo['vg_free'] |
307 | a8083063 | Iustin Pop | |
308 | e69d05fd | Iustin Pop | hyper = hypervisor.GetHypervisor(hypervisor_type) |
309 | a8083063 | Iustin Pop | hyp_info = hyper.GetNodeInfo() |
310 | a8083063 | Iustin Pop | if hyp_info is not None: |
311 | a8083063 | Iustin Pop | outputarray.update(hyp_info) |
312 | a8083063 | Iustin Pop | |
313 | 3ef10550 | Michael Hanselmann | f = open("/proc/sys/kernel/random/boot_id", 'r') |
314 | 3ef10550 | Michael Hanselmann | try:
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315 | 3ef10550 | Michael Hanselmann | outputarray["bootid"] = f.read(128).rstrip("\n") |
316 | 3ef10550 | Michael Hanselmann | finally:
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317 | 3ef10550 | Michael Hanselmann | f.close() |
318 | 3ef10550 | Michael Hanselmann | |
319 | a8083063 | Iustin Pop | return outputarray
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320 | a8083063 | Iustin Pop | |
321 | a8083063 | Iustin Pop | |
322 | 62c9ec92 | Iustin Pop | def VerifyNode(what, cluster_name): |
323 | a8083063 | Iustin Pop | """Verify the status of the local node.
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324 | a8083063 | Iustin Pop |
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325 | e69d05fd | Iustin Pop | Based on the input L{what} parameter, various checks are done on the
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326 | e69d05fd | Iustin Pop | local node.
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327 | e69d05fd | Iustin Pop |
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328 | e69d05fd | Iustin Pop | If the I{filelist} key is present, this list of
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329 | e69d05fd | Iustin Pop | files is checksummed and the file/checksum pairs are returned.
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330 | e69d05fd | Iustin Pop |
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331 | e69d05fd | Iustin Pop | If the I{nodelist} key is present, we check that we have
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332 | e69d05fd | Iustin Pop | connectivity via ssh with the target nodes (and check the hostname
|
333 | e69d05fd | Iustin Pop | report).
|
334 | a8083063 | Iustin Pop |
|
335 | e69d05fd | Iustin Pop | If the I{node-net-test} key is present, we check that we have
|
336 | e69d05fd | Iustin Pop | connectivity to the given nodes via both primary IP and, if
|
337 | e69d05fd | Iustin Pop | applicable, secondary IPs.
|
338 | e69d05fd | Iustin Pop |
|
339 | e69d05fd | Iustin Pop | @type what: C{dict}
|
340 | e69d05fd | Iustin Pop | @param what: a dictionary of things to check:
|
341 | e69d05fd | Iustin Pop | - filelist: list of files for which to compute checksums
|
342 | e69d05fd | Iustin Pop | - nodelist: list of nodes we should check ssh communication with
|
343 | e69d05fd | Iustin Pop | - node-net-test: list of nodes we should check node daemon port
|
344 | e69d05fd | Iustin Pop | connectivity with
|
345 | e69d05fd | Iustin Pop | - hypervisor: list with hypervisors to run the verify for
|
346 | 10c2650b | Iustin Pop | @rtype: dict
|
347 | 10c2650b | Iustin Pop | @return: a dictionary with the same keys as the input dict, and
|
348 | 10c2650b | Iustin Pop | values representing the result of the checks
|
349 | a8083063 | Iustin Pop |
|
350 | a8083063 | Iustin Pop | """
|
351 | a8083063 | Iustin Pop | result = {} |
352 | a8083063 | Iustin Pop | |
353 | a8083063 | Iustin Pop | if 'hypervisor' in what: |
354 | e69d05fd | Iustin Pop | result['hypervisor'] = my_dict = {}
|
355 | e69d05fd | Iustin Pop | for hv_name in what['hypervisor']: |
356 | e69d05fd | Iustin Pop | my_dict[hv_name] = hypervisor.GetHypervisor(hv_name).Verify() |
357 | a8083063 | Iustin Pop | |
358 | a8083063 | Iustin Pop | if 'filelist' in what: |
359 | a8083063 | Iustin Pop | result['filelist'] = utils.FingerprintFiles(what['filelist']) |
360 | a8083063 | Iustin Pop | |
361 | a8083063 | Iustin Pop | if 'nodelist' in what: |
362 | a8083063 | Iustin Pop | result['nodelist'] = {}
|
363 | b544cfe0 | Iustin Pop | random.shuffle(what['nodelist'])
|
364 | a8083063 | Iustin Pop | for node in what['nodelist']: |
365 | 62c9ec92 | Iustin Pop | success, message = _GetSshRunner(cluster_name).VerifyNodeHostname(node) |
366 | a8083063 | Iustin Pop | if not success: |
367 | a8083063 | Iustin Pop | result['nodelist'][node] = message
|
368 | 9d4bfc96 | Iustin Pop | if 'node-net-test' in what: |
369 | 9d4bfc96 | Iustin Pop | result['node-net-test'] = {}
|
370 | 9d4bfc96 | Iustin Pop | my_name = utils.HostInfo().name |
371 | 9d4bfc96 | Iustin Pop | my_pip = my_sip = None
|
372 | 9d4bfc96 | Iustin Pop | for name, pip, sip in what['node-net-test']: |
373 | 9d4bfc96 | Iustin Pop | if name == my_name:
|
374 | 9d4bfc96 | Iustin Pop | my_pip = pip |
375 | 9d4bfc96 | Iustin Pop | my_sip = sip |
376 | 9d4bfc96 | Iustin Pop | break
|
377 | 9d4bfc96 | Iustin Pop | if not my_pip: |
378 | 9d4bfc96 | Iustin Pop | result['node-net-test'][my_name] = ("Can't find my own" |
379 | 9d4bfc96 | Iustin Pop | " primary/secondary IP"
|
380 | 9d4bfc96 | Iustin Pop | " in the node list")
|
381 | 9d4bfc96 | Iustin Pop | else:
|
382 | c657dcc9 | Michael Hanselmann | port = utils.GetNodeDaemonPort() |
383 | 9d4bfc96 | Iustin Pop | for name, pip, sip in what['node-net-test']: |
384 | 9d4bfc96 | Iustin Pop | fail = [] |
385 | 9d4bfc96 | Iustin Pop | if not utils.TcpPing(pip, port, source=my_pip): |
386 | 9d4bfc96 | Iustin Pop | fail.append("primary")
|
387 | 9d4bfc96 | Iustin Pop | if sip != pip:
|
388 | 9d4bfc96 | Iustin Pop | if not utils.TcpPing(sip, port, source=my_sip): |
389 | 9d4bfc96 | Iustin Pop | fail.append("secondary")
|
390 | 9d4bfc96 | Iustin Pop | if fail:
|
391 | 9d4bfc96 | Iustin Pop | result['node-net-test'][name] = ("failure using the %s" |
392 | 9d4bfc96 | Iustin Pop | " interface(s)" %
|
393 | 9d4bfc96 | Iustin Pop | " and ".join(fail))
|
394 | 9d4bfc96 | Iustin Pop | |
395 | a8083063 | Iustin Pop | return result
|
396 | a8083063 | Iustin Pop | |
397 | a8083063 | Iustin Pop | |
398 | a8083063 | Iustin Pop | def GetVolumeList(vg_name): |
399 | a8083063 | Iustin Pop | """Compute list of logical volumes and their size.
|
400 | a8083063 | Iustin Pop |
|
401 | 10c2650b | Iustin Pop | @type vg_name: str
|
402 | 10c2650b | Iustin Pop | @param vg_name: the volume group whose LVs we should list
|
403 | 10c2650b | Iustin Pop | @rtype: dict
|
404 | 10c2650b | Iustin Pop | @return:
|
405 | 10c2650b | Iustin Pop | dictionary of all partions (key) with value being a tuple of
|
406 | 10c2650b | Iustin Pop | their size (in MiB), inactive and online status::
|
407 | 10c2650b | Iustin Pop |
|
408 | 10c2650b | Iustin Pop | {'test1': ('20.06', True, True)}
|
409 | 10c2650b | Iustin Pop |
|
410 | 10c2650b | Iustin Pop | in case of errors, a string is returned with the error
|
411 | 10c2650b | Iustin Pop | details.
|
412 | a8083063 | Iustin Pop |
|
413 | a8083063 | Iustin Pop | """
|
414 | cb2037a2 | Iustin Pop | lvs = {} |
415 | cb2037a2 | Iustin Pop | sep = '|'
|
416 | cb2037a2 | Iustin Pop | result = utils.RunCmd(["lvs", "--noheadings", "--units=m", "--nosuffix", |
417 | cb2037a2 | Iustin Pop | "--separator=%s" % sep,
|
418 | cb2037a2 | Iustin Pop | "-olv_name,lv_size,lv_attr", vg_name])
|
419 | a8083063 | Iustin Pop | if result.failed:
|
420 | 18682bca | Iustin Pop | logging.error("Failed to list logical volumes, lvs output: %s",
|
421 | 18682bca | Iustin Pop | result.output) |
422 | b63ed789 | Iustin Pop | return result.output
|
423 | cb2037a2 | Iustin Pop | |
424 | df4c2628 | Iustin Pop | valid_line_re = re.compile("^ *([^|]+)\|([0-9.]+)\|([^|]{6})\|?$")
|
425 | cb2037a2 | Iustin Pop | for line in result.stdout.splitlines(): |
426 | df4c2628 | Iustin Pop | line = line.strip() |
427 | df4c2628 | Iustin Pop | match = valid_line_re.match(line) |
428 | df4c2628 | Iustin Pop | if not match: |
429 | 18682bca | Iustin Pop | logging.error("Invalid line returned from lvs output: '%s'", line)
|
430 | df4c2628 | Iustin Pop | continue
|
431 | df4c2628 | Iustin Pop | name, size, attr = match.groups() |
432 | cb2037a2 | Iustin Pop | inactive = attr[4] == '-' |
433 | cb2037a2 | Iustin Pop | online = attr[5] == 'o' |
434 | cb2037a2 | Iustin Pop | lvs[name] = (size, inactive, online) |
435 | cb2037a2 | Iustin Pop | |
436 | cb2037a2 | Iustin Pop | return lvs
|
437 | a8083063 | Iustin Pop | |
438 | a8083063 | Iustin Pop | |
439 | a8083063 | Iustin Pop | def ListVolumeGroups(): |
440 | 2f8598a5 | Alexander Schreiber | """List the volume groups and their size.
|
441 | a8083063 | Iustin Pop |
|
442 | 10c2650b | Iustin Pop | @rtype: dict
|
443 | 10c2650b | Iustin Pop | @return: dictionary with keys volume name and values the
|
444 | 10c2650b | Iustin Pop | size of the volume
|
445 | a8083063 | Iustin Pop |
|
446 | a8083063 | Iustin Pop | """
|
447 | a8083063 | Iustin Pop | return utils.ListVolumeGroups()
|
448 | a8083063 | Iustin Pop | |
449 | a8083063 | Iustin Pop | |
450 | dcb93971 | Michael Hanselmann | def NodeVolumes(): |
451 | dcb93971 | Michael Hanselmann | """List all volumes on this node.
|
452 | dcb93971 | Michael Hanselmann |
|
453 | 10c2650b | Iustin Pop | @rtype: list
|
454 | 10c2650b | Iustin Pop | @return:
|
455 | 10c2650b | Iustin Pop | A list of dictionaries, each having four keys:
|
456 | 10c2650b | Iustin Pop | - name: the logical volume name,
|
457 | 10c2650b | Iustin Pop | - size: the size of the logical volume
|
458 | 10c2650b | Iustin Pop | - dev: the physical device on which the LV lives
|
459 | 10c2650b | Iustin Pop | - vg: the volume group to which it belongs
|
460 | 10c2650b | Iustin Pop |
|
461 | 10c2650b | Iustin Pop | In case of errors, we return an empty list and log the
|
462 | 10c2650b | Iustin Pop | error.
|
463 | 10c2650b | Iustin Pop |
|
464 | 10c2650b | Iustin Pop | Note that since a logical volume can live on multiple physical
|
465 | 10c2650b | Iustin Pop | volumes, the resulting list might include a logical volume
|
466 | 10c2650b | Iustin Pop | multiple times.
|
467 | 10c2650b | Iustin Pop |
|
468 | dcb93971 | Michael Hanselmann | """
|
469 | dcb93971 | Michael Hanselmann | result = utils.RunCmd(["lvs", "--noheadings", "--units=m", "--nosuffix", |
470 | dcb93971 | Michael Hanselmann | "--separator=|",
|
471 | dcb93971 | Michael Hanselmann | "--options=lv_name,lv_size,devices,vg_name"])
|
472 | dcb93971 | Michael Hanselmann | if result.failed:
|
473 | 18682bca | Iustin Pop | logging.error("Failed to list logical volumes, lvs output: %s",
|
474 | 18682bca | Iustin Pop | result.output) |
475 | 3f5bd234 | Iustin Pop | return []
|
476 | dcb93971 | Michael Hanselmann | |
477 | dcb93971 | Michael Hanselmann | def parse_dev(dev): |
478 | dcb93971 | Michael Hanselmann | if '(' in dev: |
479 | dcb93971 | Michael Hanselmann | return dev.split('(')[0] |
480 | dcb93971 | Michael Hanselmann | else:
|
481 | dcb93971 | Michael Hanselmann | return dev
|
482 | dcb93971 | Michael Hanselmann | |
483 | dcb93971 | Michael Hanselmann | def map_line(line): |
484 | dcb93971 | Michael Hanselmann | return {
|
485 | dcb93971 | Michael Hanselmann | 'name': line[0].strip(), |
486 | dcb93971 | Michael Hanselmann | 'size': line[1].strip(), |
487 | dcb93971 | Michael Hanselmann | 'dev': parse_dev(line[2].strip()), |
488 | dcb93971 | Michael Hanselmann | 'vg': line[3].strip(), |
489 | dcb93971 | Michael Hanselmann | } |
490 | dcb93971 | Michael Hanselmann | |
491 | a17a7623 | Iustin Pop | return [map_line(line.split('|')) for line in result.stdout.splitlines() |
492 | a17a7623 | Iustin Pop | if line.count('|') >= 3] |
493 | dcb93971 | Michael Hanselmann | |
494 | dcb93971 | Michael Hanselmann | |
495 | a8083063 | Iustin Pop | def BridgesExist(bridges_list): |
496 | 2f8598a5 | Alexander Schreiber | """Check if a list of bridges exist on the current node.
|
497 | a8083063 | Iustin Pop |
|
498 | b1206984 | Iustin Pop | @rtype: boolean
|
499 | b1206984 | Iustin Pop | @return: C{True} if all of them exist, C{False} otherwise
|
500 | a8083063 | Iustin Pop |
|
501 | a8083063 | Iustin Pop | """
|
502 | a8083063 | Iustin Pop | for bridge in bridges_list: |
503 | a8083063 | Iustin Pop | if not utils.BridgeExists(bridge): |
504 | a8083063 | Iustin Pop | return False |
505 | a8083063 | Iustin Pop | |
506 | a8083063 | Iustin Pop | return True |
507 | a8083063 | Iustin Pop | |
508 | a8083063 | Iustin Pop | |
509 | e69d05fd | Iustin Pop | def GetInstanceList(hypervisor_list): |
510 | 2f8598a5 | Alexander Schreiber | """Provides a list of instances.
|
511 | a8083063 | Iustin Pop |
|
512 | e69d05fd | Iustin Pop | @type hypervisor_list: list
|
513 | e69d05fd | Iustin Pop | @param hypervisor_list: the list of hypervisors to query information
|
514 | e69d05fd | Iustin Pop |
|
515 | e69d05fd | Iustin Pop | @rtype: list
|
516 | e69d05fd | Iustin Pop | @return: a list of all running instances on the current node
|
517 | 10c2650b | Iustin Pop | - instance1.example.com
|
518 | 10c2650b | Iustin Pop | - instance2.example.com
|
519 | a8083063 | Iustin Pop |
|
520 | 098c0958 | Michael Hanselmann | """
|
521 | e69d05fd | Iustin Pop | results = [] |
522 | e69d05fd | Iustin Pop | for hname in hypervisor_list: |
523 | e69d05fd | Iustin Pop | try:
|
524 | e69d05fd | Iustin Pop | names = hypervisor.GetHypervisor(hname).ListInstances() |
525 | e69d05fd | Iustin Pop | results.extend(names) |
526 | e69d05fd | Iustin Pop | except errors.HypervisorError, err:
|
527 | e69d05fd | Iustin Pop | logging.exception("Error enumerating instances for hypevisor %s", hname)
|
528 | e69d05fd | Iustin Pop | # FIXME: should we somehow not propagate this to the master?
|
529 | e69d05fd | Iustin Pop | raise
|
530 | a8083063 | Iustin Pop | |
531 | e69d05fd | Iustin Pop | return results
|
532 | a8083063 | Iustin Pop | |
533 | a8083063 | Iustin Pop | |
534 | e69d05fd | Iustin Pop | def GetInstanceInfo(instance, hname): |
535 | 2f8598a5 | Alexander Schreiber | """Gives back the informations about an instance as a dictionary.
|
536 | a8083063 | Iustin Pop |
|
537 | e69d05fd | Iustin Pop | @type instance: string
|
538 | e69d05fd | Iustin Pop | @param instance: the instance name
|
539 | e69d05fd | Iustin Pop | @type hname: string
|
540 | e69d05fd | Iustin Pop | @param hname: the hypervisor type of the instance
|
541 | a8083063 | Iustin Pop |
|
542 | e69d05fd | Iustin Pop | @rtype: dict
|
543 | e69d05fd | Iustin Pop | @return: dictionary with the following keys:
|
544 | e69d05fd | Iustin Pop | - memory: memory size of instance (int)
|
545 | e69d05fd | Iustin Pop | - state: xen state of instance (string)
|
546 | e69d05fd | Iustin Pop | - time: cpu time of instance (float)
|
547 | a8083063 | Iustin Pop |
|
548 | 098c0958 | Michael Hanselmann | """
|
549 | a8083063 | Iustin Pop | output = {} |
550 | a8083063 | Iustin Pop | |
551 | e69d05fd | Iustin Pop | iinfo = hypervisor.GetHypervisor(hname).GetInstanceInfo(instance) |
552 | a8083063 | Iustin Pop | if iinfo is not None: |
553 | a8083063 | Iustin Pop | output['memory'] = iinfo[2] |
554 | a8083063 | Iustin Pop | output['state'] = iinfo[4] |
555 | a8083063 | Iustin Pop | output['time'] = iinfo[5] |
556 | a8083063 | Iustin Pop | |
557 | a8083063 | Iustin Pop | return output
|
558 | a8083063 | Iustin Pop | |
559 | a8083063 | Iustin Pop | |
560 | e69d05fd | Iustin Pop | def GetAllInstancesInfo(hypervisor_list): |
561 | a8083063 | Iustin Pop | """Gather data about all instances.
|
562 | a8083063 | Iustin Pop |
|
563 | 10c2650b | Iustin Pop | This is the equivalent of L{GetInstanceInfo}, except that it
|
564 | a8083063 | Iustin Pop | computes data for all instances at once, thus being faster if one
|
565 | a8083063 | Iustin Pop | needs data about more than one instance.
|
566 | a8083063 | Iustin Pop |
|
567 | e69d05fd | Iustin Pop | @type hypervisor_list: list
|
568 | e69d05fd | Iustin Pop | @param hypervisor_list: list of hypervisors to query for instance data
|
569 | e69d05fd | Iustin Pop |
|
570 | 955db481 | Guido Trotter | @rtype: dict
|
571 | e69d05fd | Iustin Pop | @return: dictionary of instance: data, with data having the following keys:
|
572 | e69d05fd | Iustin Pop | - memory: memory size of instance (int)
|
573 | e69d05fd | Iustin Pop | - state: xen state of instance (string)
|
574 | e69d05fd | Iustin Pop | - time: cpu time of instance (float)
|
575 | 10c2650b | Iustin Pop | - vcpus: the number of vcpus
|
576 | a8083063 | Iustin Pop |
|
577 | 098c0958 | Michael Hanselmann | """
|
578 | a8083063 | Iustin Pop | output = {} |
579 | a8083063 | Iustin Pop | |
580 | e69d05fd | Iustin Pop | for hname in hypervisor_list: |
581 | e69d05fd | Iustin Pop | iinfo = hypervisor.GetHypervisor(hname).GetAllInstancesInfo() |
582 | e69d05fd | Iustin Pop | if iinfo:
|
583 | e69d05fd | Iustin Pop | for name, inst_id, memory, vcpus, state, times in iinfo: |
584 | f23b5ae8 | Iustin Pop | value = { |
585 | e69d05fd | Iustin Pop | 'memory': memory,
|
586 | e69d05fd | Iustin Pop | 'vcpus': vcpus,
|
587 | e69d05fd | Iustin Pop | 'state': state,
|
588 | e69d05fd | Iustin Pop | 'time': times,
|
589 | e69d05fd | Iustin Pop | } |
590 | f23b5ae8 | Iustin Pop | if name in output and output[name] != value: |
591 | f23b5ae8 | Iustin Pop | raise errors.HypervisorError("Instance %s running duplicate" |
592 | f23b5ae8 | Iustin Pop | " with different parameters" % name)
|
593 | f23b5ae8 | Iustin Pop | output[name] = value |
594 | a8083063 | Iustin Pop | |
595 | a8083063 | Iustin Pop | return output
|
596 | a8083063 | Iustin Pop | |
597 | a8083063 | Iustin Pop | |
598 | d15a9ad3 | Guido Trotter | def AddOSToInstance(instance): |
599 | 2f8598a5 | Alexander Schreiber | """Add an OS to an instance.
|
600 | a8083063 | Iustin Pop |
|
601 | d15a9ad3 | Guido Trotter | @type instance: L{objects.Instance}
|
602 | d15a9ad3 | Guido Trotter | @param instance: Instance whose OS is to be installed
|
603 | 10c2650b | Iustin Pop | @rtype: boolean
|
604 | 10c2650b | Iustin Pop | @return: the success of the operation
|
605 | a8083063 | Iustin Pop |
|
606 | a8083063 | Iustin Pop | """
|
607 | a8083063 | Iustin Pop | inst_os = OSFromDisk(instance.os) |
608 | a8083063 | Iustin Pop | |
609 | 58f6e5ca | Guido Trotter | create_env = OSEnvironment(instance) |
610 | a8083063 | Iustin Pop | |
611 | a8083063 | Iustin Pop | logfile = "%s/add-%s-%s-%d.log" % (constants.LOG_OS_DIR, instance.os,
|
612 | a8083063 | Iustin Pop | instance.name, int(time.time()))
|
613 | decd5f45 | Iustin Pop | |
614 | d868edb4 | Iustin Pop | result = utils.RunCmd([inst_os.create_script], env=create_env, |
615 | d868edb4 | Iustin Pop | cwd=inst_os.path, output=logfile,) |
616 | decd5f45 | Iustin Pop | if result.failed:
|
617 | 18682bca | Iustin Pop | logging.error("os create command '%s' returned error: %s, logfile: %s,"
|
618 | d868edb4 | Iustin Pop | " output: %s", result.cmd, result.fail_reason, logfile,
|
619 | 18682bca | Iustin Pop | result.output) |
620 | decd5f45 | Iustin Pop | return False |
621 | decd5f45 | Iustin Pop | |
622 | decd5f45 | Iustin Pop | return True |
623 | decd5f45 | Iustin Pop | |
624 | decd5f45 | Iustin Pop | |
625 | d15a9ad3 | Guido Trotter | def RunRenameInstance(instance, old_name): |
626 | decd5f45 | Iustin Pop | """Run the OS rename script for an instance.
|
627 | decd5f45 | Iustin Pop |
|
628 | b1206984 | Iustin Pop | @type instance: L{objects.Instance}
|
629 | d15a9ad3 | Guido Trotter | @param instance: Instance whose OS is to be installed
|
630 | d15a9ad3 | Guido Trotter | @type old_name: string
|
631 | d15a9ad3 | Guido Trotter | @param old_name: previous instance name
|
632 | 10c2650b | Iustin Pop | @rtype: boolean
|
633 | 10c2650b | Iustin Pop | @return: the success of the operation
|
634 | decd5f45 | Iustin Pop |
|
635 | decd5f45 | Iustin Pop | """
|
636 | decd5f45 | Iustin Pop | inst_os = OSFromDisk(instance.os) |
637 | decd5f45 | Iustin Pop | |
638 | ff38b6c0 | Guido Trotter | rename_env = OSEnvironment(instance) |
639 | ff38b6c0 | Guido Trotter | rename_env['OLD_INSTANCE_NAME'] = old_name
|
640 | decd5f45 | Iustin Pop | |
641 | decd5f45 | Iustin Pop | logfile = "%s/rename-%s-%s-%s-%d.log" % (constants.LOG_OS_DIR, instance.os,
|
642 | decd5f45 | Iustin Pop | old_name, |
643 | decd5f45 | Iustin Pop | instance.name, int(time.time()))
|
644 | a8083063 | Iustin Pop | |
645 | d868edb4 | Iustin Pop | result = utils.RunCmd([inst_os.rename_script], env=rename_env, |
646 | d868edb4 | Iustin Pop | cwd=inst_os.path, output=logfile) |
647 | a8083063 | Iustin Pop | |
648 | a8083063 | Iustin Pop | if result.failed:
|
649 | 18682bca | Iustin Pop | logging.error("os create command '%s' returned error: %s output: %s",
|
650 | d868edb4 | Iustin Pop | result.cmd, result.fail_reason, result.output) |
651 | a8083063 | Iustin Pop | return False |
652 | a8083063 | Iustin Pop | |
653 | a8083063 | Iustin Pop | return True |
654 | a8083063 | Iustin Pop | |
655 | a8083063 | Iustin Pop | |
656 | a8083063 | Iustin Pop | def _GetVGInfo(vg_name): |
657 | a8083063 | Iustin Pop | """Get informations about the volume group.
|
658 | a8083063 | Iustin Pop |
|
659 | 10c2650b | Iustin Pop | @type vg_name: str
|
660 | 10c2650b | Iustin Pop | @param vg_name: the volume group which we query
|
661 | 10c2650b | Iustin Pop | @rtype: dict
|
662 | 10c2650b | Iustin Pop | @return:
|
663 | 10c2650b | Iustin Pop | A dictionary with the following keys:
|
664 | 10c2650b | Iustin Pop | - C{vg_size} is the total size of the volume group in MiB
|
665 | 10c2650b | Iustin Pop | - C{vg_free} is the free size of the volume group in MiB
|
666 | 10c2650b | Iustin Pop | - C{pv_count} are the number of physical disks in that VG
|
667 | a8083063 | Iustin Pop |
|
668 | 10c2650b | Iustin Pop | If an error occurs during gathering of data, we return the same dict
|
669 | 10c2650b | Iustin Pop | with keys all set to None.
|
670 | f4d377e7 | Iustin Pop |
|
671 | a8083063 | Iustin Pop | """
|
672 | f4d377e7 | Iustin Pop | retdic = dict.fromkeys(["vg_size", "vg_free", "pv_count"]) |
673 | f4d377e7 | Iustin Pop | |
674 | a8083063 | Iustin Pop | retval = utils.RunCmd(["vgs", "-ovg_size,vg_free,pv_count", "--noheadings", |
675 | a8083063 | Iustin Pop | "--nosuffix", "--units=m", "--separator=:", vg_name]) |
676 | a8083063 | Iustin Pop | |
677 | a8083063 | Iustin Pop | if retval.failed:
|
678 | 18682bca | Iustin Pop | logging.error("volume group %s not present", vg_name)
|
679 | f4d377e7 | Iustin Pop | return retdic
|
680 | d87ae7d2 | Iustin Pop | valarr = retval.stdout.strip().rstrip(':').split(':') |
681 | f4d377e7 | Iustin Pop | if len(valarr) == 3: |
682 | f4d377e7 | Iustin Pop | try:
|
683 | f4d377e7 | Iustin Pop | retdic = { |
684 | f4d377e7 | Iustin Pop | "vg_size": int(round(float(valarr[0]), 0)), |
685 | f4d377e7 | Iustin Pop | "vg_free": int(round(float(valarr[1]), 0)), |
686 | f4d377e7 | Iustin Pop | "pv_count": int(valarr[2]), |
687 | f4d377e7 | Iustin Pop | } |
688 | f4d377e7 | Iustin Pop | except ValueError, err: |
689 | 18682bca | Iustin Pop | logging.exception("Fail to parse vgs output")
|
690 | f4d377e7 | Iustin Pop | else:
|
691 | 18682bca | Iustin Pop | logging.error("vgs output has the wrong number of fields (expected"
|
692 | 18682bca | Iustin Pop | " three): %s", str(valarr)) |
693 | a8083063 | Iustin Pop | return retdic
|
694 | a8083063 | Iustin Pop | |
695 | a8083063 | Iustin Pop | |
696 | a8083063 | Iustin Pop | def _GatherBlockDevs(instance): |
697 | a8083063 | Iustin Pop | """Set up an instance's block device(s).
|
698 | a8083063 | Iustin Pop |
|
699 | a8083063 | Iustin Pop | This is run on the primary node at instance startup. The block
|
700 | a8083063 | Iustin Pop | devices must be already assembled.
|
701 | a8083063 | Iustin Pop |
|
702 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
703 | 10c2650b | Iustin Pop | @param instance: the instance whose disks we shoul assemble
|
704 | 10c2650b | Iustin Pop | @rtype: list of L{bdev.BlockDev}
|
705 | 10c2650b | Iustin Pop | @return: list of the block devices
|
706 | 10c2650b | Iustin Pop |
|
707 | a8083063 | Iustin Pop | """
|
708 | a8083063 | Iustin Pop | block_devices = [] |
709 | a8083063 | Iustin Pop | for disk in instance.disks: |
710 | a8083063 | Iustin Pop | device = _RecursiveFindBD(disk) |
711 | a8083063 | Iustin Pop | if device is None: |
712 | a8083063 | Iustin Pop | raise errors.BlockDeviceError("Block device '%s' is not set up." % |
713 | a8083063 | Iustin Pop | str(disk))
|
714 | a8083063 | Iustin Pop | device.Open() |
715 | a8083063 | Iustin Pop | block_devices.append((disk, device)) |
716 | a8083063 | Iustin Pop | return block_devices
|
717 | a8083063 | Iustin Pop | |
718 | a8083063 | Iustin Pop | |
719 | a8083063 | Iustin Pop | def StartInstance(instance, extra_args): |
720 | a8083063 | Iustin Pop | """Start an instance.
|
721 | a8083063 | Iustin Pop |
|
722 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
723 | e69d05fd | Iustin Pop | @param instance: the instance object
|
724 | e69d05fd | Iustin Pop | @rtype: boolean
|
725 | e69d05fd | Iustin Pop | @return: whether the startup was successful or not
|
726 | a8083063 | Iustin Pop |
|
727 | 098c0958 | Michael Hanselmann | """
|
728 | e69d05fd | Iustin Pop | running_instances = GetInstanceList([instance.hypervisor]) |
729 | a8083063 | Iustin Pop | |
730 | a8083063 | Iustin Pop | if instance.name in running_instances: |
731 | a8083063 | Iustin Pop | return True |
732 | a8083063 | Iustin Pop | |
733 | a8083063 | Iustin Pop | block_devices = _GatherBlockDevs(instance) |
734 | e69d05fd | Iustin Pop | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
735 | a8083063 | Iustin Pop | |
736 | a8083063 | Iustin Pop | try:
|
737 | a8083063 | Iustin Pop | hyper.StartInstance(instance, block_devices, extra_args) |
738 | a8083063 | Iustin Pop | except errors.HypervisorError, err:
|
739 | 18682bca | Iustin Pop | logging.exception("Failed to start instance")
|
740 | a8083063 | Iustin Pop | return False |
741 | a8083063 | Iustin Pop | |
742 | a8083063 | Iustin Pop | return True |
743 | a8083063 | Iustin Pop | |
744 | a8083063 | Iustin Pop | |
745 | a8083063 | Iustin Pop | def ShutdownInstance(instance): |
746 | a8083063 | Iustin Pop | """Shut an instance down.
|
747 | a8083063 | Iustin Pop |
|
748 | 10c2650b | Iustin Pop | @note: this functions uses polling with a hardcoded timeout.
|
749 | 10c2650b | Iustin Pop |
|
750 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
751 | e69d05fd | Iustin Pop | @param instance: the instance object
|
752 | e69d05fd | Iustin Pop | @rtype: boolean
|
753 | e69d05fd | Iustin Pop | @return: whether the startup was successful or not
|
754 | a8083063 | Iustin Pop |
|
755 | 098c0958 | Michael Hanselmann | """
|
756 | e69d05fd | Iustin Pop | hv_name = instance.hypervisor |
757 | e69d05fd | Iustin Pop | running_instances = GetInstanceList([hv_name]) |
758 | a8083063 | Iustin Pop | |
759 | a8083063 | Iustin Pop | if instance.name not in running_instances: |
760 | a8083063 | Iustin Pop | return True |
761 | a8083063 | Iustin Pop | |
762 | e69d05fd | Iustin Pop | hyper = hypervisor.GetHypervisor(hv_name) |
763 | a8083063 | Iustin Pop | try:
|
764 | a8083063 | Iustin Pop | hyper.StopInstance(instance) |
765 | a8083063 | Iustin Pop | except errors.HypervisorError, err:
|
766 | 18682bca | Iustin Pop | logging.error("Failed to stop instance")
|
767 | a8083063 | Iustin Pop | return False |
768 | a8083063 | Iustin Pop | |
769 | a8083063 | Iustin Pop | # test every 10secs for 2min
|
770 | a8083063 | Iustin Pop | shutdown_ok = False
|
771 | a8083063 | Iustin Pop | |
772 | a8083063 | Iustin Pop | time.sleep(1)
|
773 | a8083063 | Iustin Pop | for dummy in range(11): |
774 | e69d05fd | Iustin Pop | if instance.name not in GetInstanceList([hv_name]): |
775 | a8083063 | Iustin Pop | break
|
776 | a8083063 | Iustin Pop | time.sleep(10)
|
777 | a8083063 | Iustin Pop | else:
|
778 | a8083063 | Iustin Pop | # the shutdown did not succeed
|
779 | 18682bca | Iustin Pop | logging.error("shutdown of '%s' unsuccessful, using destroy", instance)
|
780 | a8083063 | Iustin Pop | |
781 | a8083063 | Iustin Pop | try:
|
782 | a8083063 | Iustin Pop | hyper.StopInstance(instance, force=True)
|
783 | a8083063 | Iustin Pop | except errors.HypervisorError, err:
|
784 | 18682bca | Iustin Pop | logging.exception("Failed to stop instance")
|
785 | a8083063 | Iustin Pop | return False |
786 | a8083063 | Iustin Pop | |
787 | a8083063 | Iustin Pop | time.sleep(1)
|
788 | e69d05fd | Iustin Pop | if instance.name in GetInstanceList([hv_name]): |
789 | 18682bca | Iustin Pop | logging.error("could not shutdown instance '%s' even by destroy",
|
790 | 18682bca | Iustin Pop | instance.name) |
791 | a8083063 | Iustin Pop | return False |
792 | a8083063 | Iustin Pop | |
793 | a8083063 | Iustin Pop | return True |
794 | a8083063 | Iustin Pop | |
795 | a8083063 | Iustin Pop | |
796 | 007a2f3e | Alexander Schreiber | def RebootInstance(instance, reboot_type, extra_args): |
797 | 007a2f3e | Alexander Schreiber | """Reboot an instance.
|
798 | 007a2f3e | Alexander Schreiber |
|
799 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
800 | 10c2650b | Iustin Pop | @param instance: the instance object to reboot
|
801 | 10c2650b | Iustin Pop | @type reboot_type: str
|
802 | 10c2650b | Iustin Pop | @param reboot_type: the type of reboot, one the following
|
803 | 10c2650b | Iustin Pop | constants:
|
804 | 10c2650b | Iustin Pop | - L{constants.INSTANCE_REBOOT_SOFT}: only reboot the
|
805 | 10c2650b | Iustin Pop | instance OS, do not recreate the VM
|
806 | 10c2650b | Iustin Pop | - L{constants.INSTANCE_REBOOT_HARD}: tear down and
|
807 | 10c2650b | Iustin Pop | restart the VM (at the hypervisor level)
|
808 | 10c2650b | Iustin Pop | - the other reboot type (L{constants.INSTANCE_REBOOT_HARD})
|
809 | 10c2650b | Iustin Pop | is not accepted here, since that mode is handled
|
810 | 10c2650b | Iustin Pop | differently
|
811 | 10c2650b | Iustin Pop | @rtype: boolean
|
812 | 10c2650b | Iustin Pop | @return: the success of the operation
|
813 | 007a2f3e | Alexander Schreiber |
|
814 | 007a2f3e | Alexander Schreiber | """
|
815 | e69d05fd | Iustin Pop | running_instances = GetInstanceList([instance.hypervisor]) |
816 | 007a2f3e | Alexander Schreiber | |
817 | 007a2f3e | Alexander Schreiber | if instance.name not in running_instances: |
818 | 18682bca | Iustin Pop | logging.error("Cannot reboot instance that is not running")
|
819 | 007a2f3e | Alexander Schreiber | return False |
820 | 007a2f3e | Alexander Schreiber | |
821 | e69d05fd | Iustin Pop | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
822 | 007a2f3e | Alexander Schreiber | if reboot_type == constants.INSTANCE_REBOOT_SOFT:
|
823 | 007a2f3e | Alexander Schreiber | try:
|
824 | 007a2f3e | Alexander Schreiber | hyper.RebootInstance(instance) |
825 | 007a2f3e | Alexander Schreiber | except errors.HypervisorError, err:
|
826 | 18682bca | Iustin Pop | logging.exception("Failed to soft reboot instance")
|
827 | 007a2f3e | Alexander Schreiber | return False |
828 | 007a2f3e | Alexander Schreiber | elif reboot_type == constants.INSTANCE_REBOOT_HARD:
|
829 | 007a2f3e | Alexander Schreiber | try:
|
830 | 007a2f3e | Alexander Schreiber | ShutdownInstance(instance) |
831 | 007a2f3e | Alexander Schreiber | StartInstance(instance, extra_args) |
832 | 007a2f3e | Alexander Schreiber | except errors.HypervisorError, err:
|
833 | 18682bca | Iustin Pop | logging.exception("Failed to hard reboot instance")
|
834 | 007a2f3e | Alexander Schreiber | return False |
835 | 007a2f3e | Alexander Schreiber | else:
|
836 | 007a2f3e | Alexander Schreiber | raise errors.ParameterError("reboot_type invalid") |
837 | 007a2f3e | Alexander Schreiber | |
838 | 007a2f3e | Alexander Schreiber | return True |
839 | 007a2f3e | Alexander Schreiber | |
840 | 007a2f3e | Alexander Schreiber | |
841 | 2a10865c | Iustin Pop | def MigrateInstance(instance, target, live): |
842 | 2a10865c | Iustin Pop | """Migrates an instance to another node.
|
843 | 2a10865c | Iustin Pop |
|
844 | b1206984 | Iustin Pop | @type instance: L{objects.Instance}
|
845 | 9f0e6b37 | Iustin Pop | @param instance: the instance definition
|
846 | 9f0e6b37 | Iustin Pop | @type target: string
|
847 | 9f0e6b37 | Iustin Pop | @param target: the target node name
|
848 | 9f0e6b37 | Iustin Pop | @type live: boolean
|
849 | 9f0e6b37 | Iustin Pop | @param live: whether the migration should be done live or not (the
|
850 | 9f0e6b37 | Iustin Pop | interpretation of this parameter is left to the hypervisor)
|
851 | 9f0e6b37 | Iustin Pop | @rtype: tuple
|
852 | 9f0e6b37 | Iustin Pop | @return: a tuple of (success, msg) where:
|
853 | 9f0e6b37 | Iustin Pop | - succes is a boolean denoting the success/failure of the operation
|
854 | 9f0e6b37 | Iustin Pop | - msg is a string with details in case of failure
|
855 | 9f0e6b37 | Iustin Pop |
|
856 | 2a10865c | Iustin Pop | """
|
857 | e69d05fd | Iustin Pop | hyper = hypervisor.GetHypervisor(instance.hypervisor_name) |
858 | 2a10865c | Iustin Pop | |
859 | 2a10865c | Iustin Pop | try:
|
860 | 9f0e6b37 | Iustin Pop | hyper.MigrateInstance(instance.name, target, live) |
861 | 2a10865c | Iustin Pop | except errors.HypervisorError, err:
|
862 | 2a10865c | Iustin Pop | msg = "Failed to migrate instance: %s" % str(err) |
863 | 18682bca | Iustin Pop | logging.error(msg) |
864 | 2a10865c | Iustin Pop | return (False, msg) |
865 | 2a10865c | Iustin Pop | return (True, "Migration successfull") |
866 | 2a10865c | Iustin Pop | |
867 | 2a10865c | Iustin Pop | |
868 | 3f78eef2 | Iustin Pop | def CreateBlockDevice(disk, size, owner, on_primary, info): |
869 | a8083063 | Iustin Pop | """Creates a block device for an instance.
|
870 | a8083063 | Iustin Pop |
|
871 | b1206984 | Iustin Pop | @type disk: L{objects.Disk}
|
872 | b1206984 | Iustin Pop | @param disk: the object describing the disk we should create
|
873 | b1206984 | Iustin Pop | @type size: int
|
874 | b1206984 | Iustin Pop | @param size: the size of the physical underlying device, in MiB
|
875 | b1206984 | Iustin Pop | @type owner: str
|
876 | b1206984 | Iustin Pop | @param owner: the name of the instance for which disk is created,
|
877 | b1206984 | Iustin Pop | used for device cache data
|
878 | b1206984 | Iustin Pop | @type on_primary: boolean
|
879 | b1206984 | Iustin Pop | @param on_primary: indicates if it is the primary node or not
|
880 | b1206984 | Iustin Pop | @type info: string
|
881 | b1206984 | Iustin Pop | @param info: string that will be sent to the physical device
|
882 | b1206984 | Iustin Pop | creation, used for example to set (LVM) tags on LVs
|
883 | b1206984 | Iustin Pop |
|
884 | b1206984 | Iustin Pop | @return: the new unique_id of the device (this can sometime be
|
885 | b1206984 | Iustin Pop | computed only after creation), or None. On secondary nodes,
|
886 | b1206984 | Iustin Pop | it's not required to return anything.
|
887 | a8083063 | Iustin Pop |
|
888 | a8083063 | Iustin Pop | """
|
889 | a8083063 | Iustin Pop | clist = [] |
890 | a8083063 | Iustin Pop | if disk.children:
|
891 | a8083063 | Iustin Pop | for child in disk.children: |
892 | 3f78eef2 | Iustin Pop | crdev = _RecursiveAssembleBD(child, owner, on_primary) |
893 | a8083063 | Iustin Pop | if on_primary or disk.AssembleOnSecondary(): |
894 | a8083063 | Iustin Pop | # we need the children open in case the device itself has to
|
895 | a8083063 | Iustin Pop | # be assembled
|
896 | a8083063 | Iustin Pop | crdev.Open() |
897 | a8083063 | Iustin Pop | clist.append(crdev) |
898 | a8083063 | Iustin Pop | try:
|
899 | a8083063 | Iustin Pop | device = bdev.FindDevice(disk.dev_type, disk.physical_id, clist) |
900 | a8083063 | Iustin Pop | if device is not None: |
901 | 18682bca | Iustin Pop | logging.info("removing existing device %s", disk)
|
902 | a8083063 | Iustin Pop | device.Remove() |
903 | a8083063 | Iustin Pop | except errors.BlockDeviceError, err:
|
904 | a8083063 | Iustin Pop | pass
|
905 | a8083063 | Iustin Pop | |
906 | a8083063 | Iustin Pop | device = bdev.Create(disk.dev_type, disk.physical_id, |
907 | a8083063 | Iustin Pop | clist, size) |
908 | a8083063 | Iustin Pop | if device is None: |
909 | a8083063 | Iustin Pop | raise ValueError("Can't create child device for %s, %s" % |
910 | a8083063 | Iustin Pop | (disk, size)) |
911 | a8083063 | Iustin Pop | if on_primary or disk.AssembleOnSecondary(): |
912 | cf5a8306 | Iustin Pop | if not device.Assemble(): |
913 | 20a0c9ef | Guido Trotter | errorstring = "Can't assemble device after creation"
|
914 | 18682bca | Iustin Pop | logging.error(errorstring) |
915 | 20a0c9ef | Guido Trotter | raise errors.BlockDeviceError("%s, very unusual event - check the node" |
916 | 20a0c9ef | Guido Trotter | " daemon logs" % errorstring)
|
917 | e31c43f7 | Michael Hanselmann | device.SetSyncSpeed(constants.SYNC_SPEED) |
918 | a8083063 | Iustin Pop | if on_primary or disk.OpenOnSecondary(): |
919 | a8083063 | Iustin Pop | device.Open(force=True)
|
920 | 3f78eef2 | Iustin Pop | DevCacheManager.UpdateCache(device.dev_path, owner, |
921 | 3f78eef2 | Iustin Pop | on_primary, disk.iv_name) |
922 | a0c3fea1 | Michael Hanselmann | |
923 | a0c3fea1 | Michael Hanselmann | device.SetInfo(info) |
924 | a0c3fea1 | Michael Hanselmann | |
925 | a8083063 | Iustin Pop | physical_id = device.unique_id |
926 | a8083063 | Iustin Pop | return physical_id
|
927 | a8083063 | Iustin Pop | |
928 | a8083063 | Iustin Pop | |
929 | a8083063 | Iustin Pop | def RemoveBlockDevice(disk): |
930 | a8083063 | Iustin Pop | """Remove a block device.
|
931 | a8083063 | Iustin Pop |
|
932 | 10c2650b | Iustin Pop | @note: This is intended to be called recursively.
|
933 | 10c2650b | Iustin Pop |
|
934 | 10c2650b | Iustin Pop | @type disk: L{objects.disk}
|
935 | 10c2650b | Iustin Pop | @param disk: the disk object we should remove
|
936 | 10c2650b | Iustin Pop | @rtype: boolean
|
937 | 10c2650b | Iustin Pop | @return: the success of the operation
|
938 | a8083063 | Iustin Pop |
|
939 | a8083063 | Iustin Pop | """
|
940 | a8083063 | Iustin Pop | try:
|
941 | a8083063 | Iustin Pop | # since we are removing the device, allow a partial match
|
942 | a8083063 | Iustin Pop | # this allows removal of broken mirrors
|
943 | a8083063 | Iustin Pop | rdev = _RecursiveFindBD(disk, allow_partial=True)
|
944 | a8083063 | Iustin Pop | except errors.BlockDeviceError, err:
|
945 | a8083063 | Iustin Pop | # probably can't attach
|
946 | 18682bca | Iustin Pop | logging.info("Can't attach to device %s in remove", disk)
|
947 | a8083063 | Iustin Pop | rdev = None
|
948 | a8083063 | Iustin Pop | if rdev is not None: |
949 | 3f78eef2 | Iustin Pop | r_path = rdev.dev_path |
950 | a8083063 | Iustin Pop | result = rdev.Remove() |
951 | 3f78eef2 | Iustin Pop | if result:
|
952 | 3f78eef2 | Iustin Pop | DevCacheManager.RemoveCache(r_path) |
953 | a8083063 | Iustin Pop | else:
|
954 | a8083063 | Iustin Pop | result = True
|
955 | a8083063 | Iustin Pop | if disk.children:
|
956 | a8083063 | Iustin Pop | for child in disk.children: |
957 | a8083063 | Iustin Pop | result = result and RemoveBlockDevice(child)
|
958 | a8083063 | Iustin Pop | return result
|
959 | a8083063 | Iustin Pop | |
960 | a8083063 | Iustin Pop | |
961 | 3f78eef2 | Iustin Pop | def _RecursiveAssembleBD(disk, owner, as_primary): |
962 | a8083063 | Iustin Pop | """Activate a block device for an instance.
|
963 | a8083063 | Iustin Pop |
|
964 | a8083063 | Iustin Pop | This is run on the primary and secondary nodes for an instance.
|
965 | a8083063 | Iustin Pop |
|
966 | 10c2650b | Iustin Pop | @note: this function is called recursively.
|
967 | a8083063 | Iustin Pop |
|
968 | 10c2650b | Iustin Pop | @type disk: L{objects.Disk}
|
969 | 10c2650b | Iustin Pop | @param disk: the disk we try to assemble
|
970 | 10c2650b | Iustin Pop | @type owner: str
|
971 | 10c2650b | Iustin Pop | @param owner: the name of the instance which owns the disk
|
972 | 10c2650b | Iustin Pop | @type as_primary: boolean
|
973 | 10c2650b | Iustin Pop | @param as_primary: if we should make the block device
|
974 | 10c2650b | Iustin Pop | read/write
|
975 | a8083063 | Iustin Pop |
|
976 | 10c2650b | Iustin Pop | @return: the assembled device or None (in case no device
|
977 | 10c2650b | Iustin Pop | was assembled)
|
978 | 10c2650b | Iustin Pop | @raise errors.BlockDeviceError: in case there is an error
|
979 | 10c2650b | Iustin Pop | during the activation of the children or the device
|
980 | 10c2650b | Iustin Pop | itself
|
981 | a8083063 | Iustin Pop |
|
982 | a8083063 | Iustin Pop | """
|
983 | a8083063 | Iustin Pop | children = [] |
984 | a8083063 | Iustin Pop | if disk.children:
|
985 | fc1dc9d7 | Iustin Pop | mcn = disk.ChildrenNeeded() |
986 | fc1dc9d7 | Iustin Pop | if mcn == -1: |
987 | fc1dc9d7 | Iustin Pop | mcn = 0 # max number of Nones allowed |
988 | fc1dc9d7 | Iustin Pop | else:
|
989 | fc1dc9d7 | Iustin Pop | mcn = len(disk.children) - mcn # max number of Nones |
990 | a8083063 | Iustin Pop | for chld_disk in disk.children: |
991 | fc1dc9d7 | Iustin Pop | try:
|
992 | fc1dc9d7 | Iustin Pop | cdev = _RecursiveAssembleBD(chld_disk, owner, as_primary) |
993 | fc1dc9d7 | Iustin Pop | except errors.BlockDeviceError, err:
|
994 | 7803d4d3 | Iustin Pop | if children.count(None) >= mcn: |
995 | fc1dc9d7 | Iustin Pop | raise
|
996 | fc1dc9d7 | Iustin Pop | cdev = None
|
997 | 18682bca | Iustin Pop | logging.debug("Error in child activation: %s", str(err)) |
998 | fc1dc9d7 | Iustin Pop | children.append(cdev) |
999 | a8083063 | Iustin Pop | |
1000 | a8083063 | Iustin Pop | if as_primary or disk.AssembleOnSecondary(): |
1001 | a8083063 | Iustin Pop | r_dev = bdev.AttachOrAssemble(disk.dev_type, disk.physical_id, children) |
1002 | e31c43f7 | Michael Hanselmann | r_dev.SetSyncSpeed(constants.SYNC_SPEED) |
1003 | a8083063 | Iustin Pop | result = r_dev |
1004 | a8083063 | Iustin Pop | if as_primary or disk.OpenOnSecondary(): |
1005 | a8083063 | Iustin Pop | r_dev.Open() |
1006 | 3f78eef2 | Iustin Pop | DevCacheManager.UpdateCache(r_dev.dev_path, owner, |
1007 | 3f78eef2 | Iustin Pop | as_primary, disk.iv_name) |
1008 | 3f78eef2 | Iustin Pop | |
1009 | a8083063 | Iustin Pop | else:
|
1010 | a8083063 | Iustin Pop | result = True
|
1011 | a8083063 | Iustin Pop | return result
|
1012 | a8083063 | Iustin Pop | |
1013 | a8083063 | Iustin Pop | |
1014 | 3f78eef2 | Iustin Pop | def AssembleBlockDevice(disk, owner, as_primary): |
1015 | a8083063 | Iustin Pop | """Activate a block device for an instance.
|
1016 | a8083063 | Iustin Pop |
|
1017 | a8083063 | Iustin Pop | This is a wrapper over _RecursiveAssembleBD.
|
1018 | a8083063 | Iustin Pop |
|
1019 | b1206984 | Iustin Pop | @rtype: str or boolean
|
1020 | b1206984 | Iustin Pop | @return: a C{/dev/...} path for primary nodes, and
|
1021 | b1206984 | Iustin Pop | C{True} for secondary nodes
|
1022 | a8083063 | Iustin Pop |
|
1023 | a8083063 | Iustin Pop | """
|
1024 | 3f78eef2 | Iustin Pop | result = _RecursiveAssembleBD(disk, owner, as_primary) |
1025 | a8083063 | Iustin Pop | if isinstance(result, bdev.BlockDev): |
1026 | a8083063 | Iustin Pop | result = result.dev_path |
1027 | a8083063 | Iustin Pop | return result
|
1028 | a8083063 | Iustin Pop | |
1029 | a8083063 | Iustin Pop | |
1030 | a8083063 | Iustin Pop | def ShutdownBlockDevice(disk): |
1031 | a8083063 | Iustin Pop | """Shut down a block device.
|
1032 | a8083063 | Iustin Pop |
|
1033 | 10c2650b | Iustin Pop | First, if the device is assembled (can L{Attach()}), then the device
|
1034 | a8083063 | Iustin Pop | is shutdown. Then the children of the device are shutdown.
|
1035 | a8083063 | Iustin Pop |
|
1036 | a8083063 | Iustin Pop | This function is called recursively. Note that we don't cache the
|
1037 | a8083063 | Iustin Pop | children or such, as oppossed to assemble, shutdown of different
|
1038 | a8083063 | Iustin Pop | devices doesn't require that the upper device was active.
|
1039 | a8083063 | Iustin Pop |
|
1040 | 10c2650b | Iustin Pop | @type disk: L{objects.Disk}
|
1041 | 10c2650b | Iustin Pop | @param disk: the description of the disk we should
|
1042 | 10c2650b | Iustin Pop | shutdown
|
1043 | 10c2650b | Iustin Pop | @rtype: boolean
|
1044 | 10c2650b | Iustin Pop | @return: the success of the operation
|
1045 | 10c2650b | Iustin Pop |
|
1046 | a8083063 | Iustin Pop | """
|
1047 | a8083063 | Iustin Pop | r_dev = _RecursiveFindBD(disk) |
1048 | a8083063 | Iustin Pop | if r_dev is not None: |
1049 | 3f78eef2 | Iustin Pop | r_path = r_dev.dev_path |
1050 | a8083063 | Iustin Pop | result = r_dev.Shutdown() |
1051 | 3f78eef2 | Iustin Pop | if result:
|
1052 | 3f78eef2 | Iustin Pop | DevCacheManager.RemoveCache(r_path) |
1053 | a8083063 | Iustin Pop | else:
|
1054 | a8083063 | Iustin Pop | result = True
|
1055 | a8083063 | Iustin Pop | if disk.children:
|
1056 | a8083063 | Iustin Pop | for child in disk.children: |
1057 | a8083063 | Iustin Pop | result = result and ShutdownBlockDevice(child)
|
1058 | a8083063 | Iustin Pop | return result
|
1059 | a8083063 | Iustin Pop | |
1060 | a8083063 | Iustin Pop | |
1061 | 153d9724 | Iustin Pop | def MirrorAddChildren(parent_cdev, new_cdevs): |
1062 | 153d9724 | Iustin Pop | """Extend a mirrored block device.
|
1063 | a8083063 | Iustin Pop |
|
1064 | 10c2650b | Iustin Pop | @type parent_cdev: L{objects.Disk}
|
1065 | 10c2650b | Iustin Pop | @param parent_cdev: the disk to which we should add children
|
1066 | 10c2650b | Iustin Pop | @type new_cdevs: list of L{objects.Disk}
|
1067 | 10c2650b | Iustin Pop | @param new_cdevs: the list of children which we should add
|
1068 | 10c2650b | Iustin Pop | @rtype: boolean
|
1069 | 10c2650b | Iustin Pop | @return: the success of the operation
|
1070 | 10c2650b | Iustin Pop |
|
1071 | a8083063 | Iustin Pop | """
|
1072 | 153d9724 | Iustin Pop | parent_bdev = _RecursiveFindBD(parent_cdev, allow_partial=True)
|
1073 | 153d9724 | Iustin Pop | if parent_bdev is None: |
1074 | 18682bca | Iustin Pop | logging.error("Can't find parent device")
|
1075 | a8083063 | Iustin Pop | return False |
1076 | 153d9724 | Iustin Pop | new_bdevs = [_RecursiveFindBD(disk) for disk in new_cdevs] |
1077 | 153d9724 | Iustin Pop | if new_bdevs.count(None) > 0: |
1078 | 18682bca | Iustin Pop | logging.error("Can't find new device(s) to add: %s:%s",
|
1079 | 18682bca | Iustin Pop | new_bdevs, new_cdevs) |
1080 | a8083063 | Iustin Pop | return False |
1081 | 153d9724 | Iustin Pop | parent_bdev.AddChildren(new_bdevs) |
1082 | a8083063 | Iustin Pop | return True |
1083 | a8083063 | Iustin Pop | |
1084 | a8083063 | Iustin Pop | |
1085 | 153d9724 | Iustin Pop | def MirrorRemoveChildren(parent_cdev, new_cdevs): |
1086 | 153d9724 | Iustin Pop | """Shrink a mirrored block device.
|
1087 | a8083063 | Iustin Pop |
|
1088 | 10c2650b | Iustin Pop | @type parent_cdev: L{objects.Disk}
|
1089 | 10c2650b | Iustin Pop | @param parent_cdev: the disk from which we should remove children
|
1090 | 10c2650b | Iustin Pop | @type new_cdevs: list of L{objects.Disk}
|
1091 | 10c2650b | Iustin Pop | @param new_cdevs: the list of children which we should remove
|
1092 | 10c2650b | Iustin Pop | @rtype: boolean
|
1093 | 10c2650b | Iustin Pop | @return: the success of the operation
|
1094 | 10c2650b | Iustin Pop |
|
1095 | a8083063 | Iustin Pop | """
|
1096 | 153d9724 | Iustin Pop | parent_bdev = _RecursiveFindBD(parent_cdev) |
1097 | 153d9724 | Iustin Pop | if parent_bdev is None: |
1098 | 18682bca | Iustin Pop | logging.error("Can't find parent in remove children: %s", parent_cdev)
|
1099 | a8083063 | Iustin Pop | return False |
1100 | e739bd57 | Iustin Pop | devs = [] |
1101 | e739bd57 | Iustin Pop | for disk in new_cdevs: |
1102 | e739bd57 | Iustin Pop | rpath = disk.StaticDevPath() |
1103 | e739bd57 | Iustin Pop | if rpath is None: |
1104 | e739bd57 | Iustin Pop | bd = _RecursiveFindBD(disk) |
1105 | e739bd57 | Iustin Pop | if bd is None: |
1106 | 18682bca | Iustin Pop | logging.error("Can't find dynamic device %s while removing children",
|
1107 | 18682bca | Iustin Pop | disk) |
1108 | e739bd57 | Iustin Pop | return False |
1109 | e739bd57 | Iustin Pop | else:
|
1110 | e739bd57 | Iustin Pop | devs.append(bd.dev_path) |
1111 | e739bd57 | Iustin Pop | else:
|
1112 | e739bd57 | Iustin Pop | devs.append(rpath) |
1113 | e739bd57 | Iustin Pop | parent_bdev.RemoveChildren(devs) |
1114 | a8083063 | Iustin Pop | return True |
1115 | a8083063 | Iustin Pop | |
1116 | a8083063 | Iustin Pop | |
1117 | a8083063 | Iustin Pop | def GetMirrorStatus(disks): |
1118 | a8083063 | Iustin Pop | """Get the mirroring status of a list of devices.
|
1119 | a8083063 | Iustin Pop |
|
1120 | 10c2650b | Iustin Pop | @type disks: list of L{objects.Disk}
|
1121 | 10c2650b | Iustin Pop | @param disks: the list of disks which we should query
|
1122 | 10c2650b | Iustin Pop | @rtype: disk
|
1123 | 10c2650b | Iustin Pop | @return:
|
1124 | 10c2650b | Iustin Pop | a list of (mirror_done, estimated_time) tuples, which
|
1125 | 10c2650b | Iustin Pop | are the result of L{bdev.BlockDevice.CombinedSyncStatus}
|
1126 | 10c2650b | Iustin Pop | @raise errors.BlockDeviceError: if any of the disks cannot be
|
1127 | 10c2650b | Iustin Pop | found
|
1128 | a8083063 | Iustin Pop |
|
1129 | a8083063 | Iustin Pop | """
|
1130 | a8083063 | Iustin Pop | stats = [] |
1131 | a8083063 | Iustin Pop | for dsk in disks: |
1132 | a8083063 | Iustin Pop | rbd = _RecursiveFindBD(dsk) |
1133 | a8083063 | Iustin Pop | if rbd is None: |
1134 | 3ecf6786 | Iustin Pop | raise errors.BlockDeviceError("Can't find device %s" % str(dsk)) |
1135 | a8083063 | Iustin Pop | stats.append(rbd.CombinedSyncStatus()) |
1136 | a8083063 | Iustin Pop | return stats
|
1137 | a8083063 | Iustin Pop | |
1138 | a8083063 | Iustin Pop | |
1139 | a8083063 | Iustin Pop | def _RecursiveFindBD(disk, allow_partial=False): |
1140 | a8083063 | Iustin Pop | """Check if a device is activated.
|
1141 | a8083063 | Iustin Pop |
|
1142 | a8083063 | Iustin Pop | If so, return informations about the real device.
|
1143 | a8083063 | Iustin Pop |
|
1144 | 10c2650b | Iustin Pop | @type disk: L{objects.Disk}
|
1145 | 10c2650b | Iustin Pop | @param disk: the disk object we need to find
|
1146 | 10c2650b | Iustin Pop | @type allow_partial: boolean
|
1147 | 10c2650b | Iustin Pop | @param allow_partial: if true, don't abort the find if a
|
1148 | 10c2650b | Iustin Pop | child of the device can't be found; this is intended
|
1149 | 10c2650b | Iustin Pop | to be used when repairing mirrors
|
1150 | a8083063 | Iustin Pop |
|
1151 | 10c2650b | Iustin Pop | @return: None if the device can't be found,
|
1152 | 10c2650b | Iustin Pop | otherwise the device instance
|
1153 | a8083063 | Iustin Pop |
|
1154 | a8083063 | Iustin Pop | """
|
1155 | a8083063 | Iustin Pop | children = [] |
1156 | a8083063 | Iustin Pop | if disk.children:
|
1157 | a8083063 | Iustin Pop | for chdisk in disk.children: |
1158 | a8083063 | Iustin Pop | children.append(_RecursiveFindBD(chdisk)) |
1159 | a8083063 | Iustin Pop | |
1160 | a8083063 | Iustin Pop | return bdev.FindDevice(disk.dev_type, disk.physical_id, children)
|
1161 | a8083063 | Iustin Pop | |
1162 | a8083063 | Iustin Pop | |
1163 | a8083063 | Iustin Pop | def FindBlockDevice(disk): |
1164 | a8083063 | Iustin Pop | """Check if a device is activated.
|
1165 | a8083063 | Iustin Pop |
|
1166 | 10c2650b | Iustin Pop | If it is, return informations about the real device.
|
1167 | a8083063 | Iustin Pop |
|
1168 | 10c2650b | Iustin Pop | @type disk: L{objects.Disk}
|
1169 | 10c2650b | Iustin Pop | @param disk: the disk to find
|
1170 | 10c2650b | Iustin Pop | @rtype: None or tuple
|
1171 | 10c2650b | Iustin Pop | @return: None if the disk cannot be found, otherwise a
|
1172 | 10c2650b | Iustin Pop | tuple (device_path, major, minor, sync_percent,
|
1173 | 10c2650b | Iustin Pop | estimated_time, is_degraded)
|
1174 | a8083063 | Iustin Pop |
|
1175 | a8083063 | Iustin Pop | """
|
1176 | a8083063 | Iustin Pop | rbd = _RecursiveFindBD(disk) |
1177 | a8083063 | Iustin Pop | if rbd is None: |
1178 | a8083063 | Iustin Pop | return rbd
|
1179 | 0834c866 | Iustin Pop | return (rbd.dev_path, rbd.major, rbd.minor) + rbd.GetSyncStatus()
|
1180 | a8083063 | Iustin Pop | |
1181 | a8083063 | Iustin Pop | |
1182 | a8083063 | Iustin Pop | def UploadFile(file_name, data, mode, uid, gid, atime, mtime): |
1183 | a8083063 | Iustin Pop | """Write a file to the filesystem.
|
1184 | a8083063 | Iustin Pop |
|
1185 | a8083063 | Iustin Pop | This allows the master to overwrite(!) a file. It will only perform
|
1186 | a8083063 | Iustin Pop | the operation if the file belongs to a list of configuration files.
|
1187 | a8083063 | Iustin Pop |
|
1188 | 10c2650b | Iustin Pop | @type file_name: str
|
1189 | 10c2650b | Iustin Pop | @param file_name: the target file name
|
1190 | 10c2650b | Iustin Pop | @type data: str
|
1191 | 10c2650b | Iustin Pop | @param data: the new contents of the file
|
1192 | 10c2650b | Iustin Pop | @type mode: int
|
1193 | 10c2650b | Iustin Pop | @param mode: the mode to give the file (can be None)
|
1194 | 10c2650b | Iustin Pop | @type uid: int
|
1195 | 10c2650b | Iustin Pop | @param uid: the owner of the file (can be -1 for default)
|
1196 | 10c2650b | Iustin Pop | @type gid: int
|
1197 | 10c2650b | Iustin Pop | @param gid: the group of the file (can be -1 for default)
|
1198 | 10c2650b | Iustin Pop | @type atime: float
|
1199 | 10c2650b | Iustin Pop | @param atime: the atime to set on the file (can be None)
|
1200 | 10c2650b | Iustin Pop | @type mtime: float
|
1201 | 10c2650b | Iustin Pop | @param mtime: the mtime to set on the file (can be None)
|
1202 | 10c2650b | Iustin Pop | @rtype: boolean
|
1203 | 10c2650b | Iustin Pop | @return: the success of the operation; errors are logged
|
1204 | 10c2650b | Iustin Pop | in the node daemon log
|
1205 | 10c2650b | Iustin Pop |
|
1206 | a8083063 | Iustin Pop | """
|
1207 | a8083063 | Iustin Pop | if not os.path.isabs(file_name): |
1208 | 18682bca | Iustin Pop | logging.error("Filename passed to UploadFile is not absolute: '%s'",
|
1209 | 18682bca | Iustin Pop | file_name) |
1210 | a8083063 | Iustin Pop | return False |
1211 | a8083063 | Iustin Pop | |
1212 | 97628462 | Iustin Pop | allowed_files = [ |
1213 | 97628462 | Iustin Pop | constants.CLUSTER_CONF_FILE, |
1214 | 97628462 | Iustin Pop | constants.ETC_HOSTS, |
1215 | 97628462 | Iustin Pop | constants.SSH_KNOWN_HOSTS_FILE, |
1216 | 90fae627 | Guido Trotter | constants.VNC_PASSWORD_FILE, |
1217 | 97628462 | Iustin Pop | ] |
1218 | afee8008 | Michael Hanselmann | |
1219 | 553f1c1d | Michael Hanselmann | if file_name not in allowed_files: |
1220 | 18682bca | Iustin Pop | logging.error("Filename passed to UploadFile not in allowed"
|
1221 | 18682bca | Iustin Pop | " upload targets: '%s'", file_name)
|
1222 | a8083063 | Iustin Pop | return False |
1223 | a8083063 | Iustin Pop | |
1224 | 41a57aab | Michael Hanselmann | utils.WriteFile(file_name, data=data, mode=mode, uid=uid, gid=gid, |
1225 | 41a57aab | Michael Hanselmann | atime=atime, mtime=mtime) |
1226 | a8083063 | Iustin Pop | return True |
1227 | a8083063 | Iustin Pop | |
1228 | 386b57af | Iustin Pop | |
1229 | 03d1dba2 | Michael Hanselmann | def WriteSsconfFiles(values): |
1230 | 03d1dba2 | Michael Hanselmann | ssconf.WriteSsconfFiles(values) |
1231 | 6ddc95ec | Michael Hanselmann | |
1232 | 6ddc95ec | Michael Hanselmann | |
1233 | a8083063 | Iustin Pop | def _ErrnoOrStr(err): |
1234 | a8083063 | Iustin Pop | """Format an EnvironmentError exception.
|
1235 | a8083063 | Iustin Pop |
|
1236 | 10c2650b | Iustin Pop | If the L{err} argument has an errno attribute, it will be looked up
|
1237 | 10c2650b | Iustin Pop | and converted into a textual C{E...} description. Otherwise the
|
1238 | 10c2650b | Iustin Pop | string representation of the error will be returned.
|
1239 | 10c2650b | Iustin Pop |
|
1240 | 10c2650b | Iustin Pop | @type err: L{EnvironmentError}
|
1241 | 10c2650b | Iustin Pop | @param err: the exception to format
|
1242 | a8083063 | Iustin Pop |
|
1243 | a8083063 | Iustin Pop | """
|
1244 | a8083063 | Iustin Pop | if hasattr(err, 'errno'): |
1245 | a8083063 | Iustin Pop | detail = errno.errorcode[err.errno] |
1246 | a8083063 | Iustin Pop | else:
|
1247 | a8083063 | Iustin Pop | detail = str(err)
|
1248 | a8083063 | Iustin Pop | return detail
|
1249 | a8083063 | Iustin Pop | |
1250 | 5d0fe286 | Iustin Pop | |
1251 | c26dabd7 | Guido Trotter | def _OSOndiskVersion(name, os_dir): |
1252 | 2f8598a5 | Alexander Schreiber | """Compute and return the API version of a given OS.
|
1253 | a8083063 | Iustin Pop |
|
1254 | 10c2650b | Iustin Pop | This function will try to read the API version of the OS given by
|
1255 | 7c3d51d4 | Guido Trotter | the 'name' parameter and residing in the 'os_dir' directory.
|
1256 | 7c3d51d4 | Guido Trotter |
|
1257 | 10c2650b | Iustin Pop | @type name: str
|
1258 | 10c2650b | Iustin Pop | @param name: the OS name we should look for
|
1259 | 10c2650b | Iustin Pop | @type os_dir: str
|
1260 | 10c2650b | Iustin Pop | @param os_dir: the directory inwhich we should look for the OS
|
1261 | 10c2650b | Iustin Pop | @rtype: int or None
|
1262 | 10c2650b | Iustin Pop | @return:
|
1263 | 10c2650b | Iustin Pop | Either an integer denoting the version or None in the
|
1264 | 10c2650b | Iustin Pop | case when this is not a valid OS name.
|
1265 | 10c2650b | Iustin Pop | @raise errors.InvalidOS: if the OS cannot be found
|
1266 | a8083063 | Iustin Pop |
|
1267 | a8083063 | Iustin Pop | """
|
1268 | a8083063 | Iustin Pop | api_file = os.path.sep.join([os_dir, "ganeti_api_version"])
|
1269 | a8083063 | Iustin Pop | |
1270 | a8083063 | Iustin Pop | try:
|
1271 | a8083063 | Iustin Pop | st = os.stat(api_file) |
1272 | a8083063 | Iustin Pop | except EnvironmentError, err: |
1273 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir, "'ganeti_api_version' file not" |
1274 | 3ecf6786 | Iustin Pop | " found (%s)" % _ErrnoOrStr(err))
|
1275 | a8083063 | Iustin Pop | |
1276 | a8083063 | Iustin Pop | if not stat.S_ISREG(stat.S_IFMT(st.st_mode)): |
1277 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir, "'ganeti_api_version' file is not" |
1278 | 3ecf6786 | Iustin Pop | " a regular file")
|
1279 | a8083063 | Iustin Pop | |
1280 | a8083063 | Iustin Pop | try:
|
1281 | a8083063 | Iustin Pop | f = open(api_file)
|
1282 | a8083063 | Iustin Pop | try:
|
1283 | 082a7f91 | Guido Trotter | api_versions = f.readlines() |
1284 | a8083063 | Iustin Pop | finally:
|
1285 | a8083063 | Iustin Pop | f.close() |
1286 | a8083063 | Iustin Pop | except EnvironmentError, err: |
1287 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir, "error while reading the" |
1288 | 3ecf6786 | Iustin Pop | " API version (%s)" % _ErrnoOrStr(err))
|
1289 | a8083063 | Iustin Pop | |
1290 | 082a7f91 | Guido Trotter | api_versions = [version.strip() for version in api_versions] |
1291 | a8083063 | Iustin Pop | try:
|
1292 | 082a7f91 | Guido Trotter | api_versions = [int(version) for version in api_versions] |
1293 | a8083063 | Iustin Pop | except (TypeError, ValueError), err: |
1294 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir,
|
1295 | 305a7297 | Guido Trotter | "API version is not integer (%s)" % str(err)) |
1296 | a8083063 | Iustin Pop | |
1297 | 082a7f91 | Guido Trotter | return api_versions
|
1298 | a8083063 | Iustin Pop | |
1299 | 386b57af | Iustin Pop | |
1300 | 7c3d51d4 | Guido Trotter | def DiagnoseOS(top_dirs=None): |
1301 | a8083063 | Iustin Pop | """Compute the validity for all OSes.
|
1302 | a8083063 | Iustin Pop |
|
1303 | 10c2650b | Iustin Pop | @type top_dirs: list
|
1304 | 10c2650b | Iustin Pop | @param top_dirs: the list of directories in which to
|
1305 | 10c2650b | Iustin Pop | search (if not given defaults to
|
1306 | 10c2650b | Iustin Pop | L{constants.OS_SEARCH_PATH})
|
1307 | 10c2650b | Iustin Pop | @rtype: list of L{objects.OS}
|
1308 | 10c2650b | Iustin Pop | @return: an OS object for each name in all the given
|
1309 | 10c2650b | Iustin Pop | directories
|
1310 | a8083063 | Iustin Pop |
|
1311 | a8083063 | Iustin Pop | """
|
1312 | 7c3d51d4 | Guido Trotter | if top_dirs is None: |
1313 | 7c3d51d4 | Guido Trotter | top_dirs = constants.OS_SEARCH_PATH |
1314 | a8083063 | Iustin Pop | |
1315 | a8083063 | Iustin Pop | result = [] |
1316 | 65fe4693 | Iustin Pop | for dir_name in top_dirs: |
1317 | 65fe4693 | Iustin Pop | if os.path.isdir(dir_name):
|
1318 | 7c3d51d4 | Guido Trotter | try:
|
1319 | 65fe4693 | Iustin Pop | f_names = utils.ListVisibleFiles(dir_name) |
1320 | 7c3d51d4 | Guido Trotter | except EnvironmentError, err: |
1321 | 18682bca | Iustin Pop | logging.exception("Can't list the OS directory %s", dir_name)
|
1322 | 7c3d51d4 | Guido Trotter | break
|
1323 | 7c3d51d4 | Guido Trotter | for name in f_names: |
1324 | 7c3d51d4 | Guido Trotter | try:
|
1325 | 65fe4693 | Iustin Pop | os_inst = OSFromDisk(name, base_dir=dir_name) |
1326 | 7c3d51d4 | Guido Trotter | result.append(os_inst) |
1327 | 7c3d51d4 | Guido Trotter | except errors.InvalidOS, err:
|
1328 | 8fa42c7c | Guido Trotter | result.append(objects.OS.FromInvalidOS(err)) |
1329 | a8083063 | Iustin Pop | |
1330 | a8083063 | Iustin Pop | return result
|
1331 | a8083063 | Iustin Pop | |
1332 | a8083063 | Iustin Pop | |
1333 | 56bcd3f4 | Guido Trotter | def OSFromDisk(name, base_dir=None): |
1334 | a8083063 | Iustin Pop | """Create an OS instance from disk.
|
1335 | a8083063 | Iustin Pop |
|
1336 | a8083063 | Iustin Pop | This function will return an OS instance if the given name is a
|
1337 | a8083063 | Iustin Pop | valid OS name. Otherwise, it will raise an appropriate
|
1338 | 10c2650b | Iustin Pop | L{errors.InvalidOS} exception, detailing why this is not a valid OS.
|
1339 | a8083063 | Iustin Pop |
|
1340 | 8ee4dc80 | Guido Trotter | @type base_dir: string
|
1341 | 8ee4dc80 | Guido Trotter | @keyword base_dir: Base directory containing OS installations.
|
1342 | 8ee4dc80 | Guido Trotter | Defaults to a search in all the OS_SEARCH_PATH dirs.
|
1343 | 10c2650b | Iustin Pop | @rtype: L{objects.OS}
|
1344 | 10c2650b | Iustin Pop | @return: the OS instance if we find a valid one
|
1345 | 10c2650b | Iustin Pop | @raise errors.InvalidOS: if we don't find a valid OS
|
1346 | 7c3d51d4 | Guido Trotter |
|
1347 | a8083063 | Iustin Pop | """
|
1348 | 56bcd3f4 | Guido Trotter | if base_dir is None: |
1349 | 57c177af | Iustin Pop | os_dir = utils.FindFile(name, constants.OS_SEARCH_PATH, os.path.isdir) |
1350 | c34c0cfd | Iustin Pop | if os_dir is None: |
1351 | c34c0cfd | Iustin Pop | raise errors.InvalidOS(name, None, "OS dir not found in search path") |
1352 | c34c0cfd | Iustin Pop | else:
|
1353 | c34c0cfd | Iustin Pop | os_dir = os.path.sep.join([base_dir, name]) |
1354 | a8083063 | Iustin Pop | |
1355 | 082a7f91 | Guido Trotter | api_versions = _OSOndiskVersion(name, os_dir) |
1356 | a8083063 | Iustin Pop | |
1357 | 082a7f91 | Guido Trotter | if constants.OS_API_VERSION not in api_versions: |
1358 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir, "API version mismatch" |
1359 | 305a7297 | Guido Trotter | " (found %s want %s)"
|
1360 | 082a7f91 | Guido Trotter | % (api_versions, constants.OS_API_VERSION)) |
1361 | a8083063 | Iustin Pop | |
1362 | a8083063 | Iustin Pop | # OS Scripts dictionary, we will populate it with the actual script names
|
1363 | 62dbbe7e | Guido Trotter | os_scripts = dict.fromkeys(constants.OS_SCRIPTS)
|
1364 | a8083063 | Iustin Pop | |
1365 | a8083063 | Iustin Pop | for script in os_scripts: |
1366 | a8083063 | Iustin Pop | os_scripts[script] = os.path.sep.join([os_dir, script]) |
1367 | a8083063 | Iustin Pop | |
1368 | a8083063 | Iustin Pop | try:
|
1369 | a8083063 | Iustin Pop | st = os.stat(os_scripts[script]) |
1370 | a8083063 | Iustin Pop | except EnvironmentError, err: |
1371 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir, "'%s' script missing (%s)" % |
1372 | 3ecf6786 | Iustin Pop | (script, _ErrnoOrStr(err))) |
1373 | a8083063 | Iustin Pop | |
1374 | a8083063 | Iustin Pop | if stat.S_IMODE(st.st_mode) & stat.S_IXUSR != stat.S_IXUSR:
|
1375 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir, "'%s' script not executable" % |
1376 | 305a7297 | Guido Trotter | script) |
1377 | a8083063 | Iustin Pop | |
1378 | a8083063 | Iustin Pop | if not stat.S_ISREG(stat.S_IFMT(st.st_mode)): |
1379 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir, "'%s' is not a regular file" % |
1380 | 305a7297 | Guido Trotter | script) |
1381 | a8083063 | Iustin Pop | |
1382 | a8083063 | Iustin Pop | |
1383 | 8fa42c7c | Guido Trotter | return objects.OS(name=name, path=os_dir, status=constants.OS_VALID_STATUS,
|
1384 | 62dbbe7e | Guido Trotter | create_script=os_scripts[constants.OS_SCRIPT_CREATE], |
1385 | 62dbbe7e | Guido Trotter | export_script=os_scripts[constants.OS_SCRIPT_EXPORT], |
1386 | 62dbbe7e | Guido Trotter | import_script=os_scripts[constants.OS_SCRIPT_IMPORT], |
1387 | 62dbbe7e | Guido Trotter | rename_script=os_scripts[constants.OS_SCRIPT_RENAME], |
1388 | 082a7f91 | Guido Trotter | api_versions=api_versions) |
1389 | a8083063 | Iustin Pop | |
1390 | 2266edb2 | Guido Trotter | def OSEnvironment(instance, debug=0): |
1391 | 2266edb2 | Guido Trotter | """Calculate the environment for an os script.
|
1392 | 2266edb2 | Guido Trotter |
|
1393 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
1394 | 2266edb2 | Guido Trotter | @param instance: target instance for the os script run
|
1395 | 2266edb2 | Guido Trotter | @type debug: integer
|
1396 | 10c2650b | Iustin Pop | @param debug: debug level (0 or 1, for OS Api 10)
|
1397 | 2266edb2 | Guido Trotter | @rtype: dict
|
1398 | 2266edb2 | Guido Trotter | @return: dict of environment variables
|
1399 | 10c2650b | Iustin Pop | @raise errors.BlockDeviceError: if the block device
|
1400 | 10c2650b | Iustin Pop | cannot be found
|
1401 | 2266edb2 | Guido Trotter |
|
1402 | 2266edb2 | Guido Trotter | """
|
1403 | 2266edb2 | Guido Trotter | result = {} |
1404 | 2266edb2 | Guido Trotter | result['OS_API_VERSION'] = '%d' % constants.OS_API_VERSION |
1405 | 2266edb2 | Guido Trotter | result['INSTANCE_NAME'] = instance.name
|
1406 | 2266edb2 | Guido Trotter | result['HYPERVISOR'] = instance.hypervisor
|
1407 | 2266edb2 | Guido Trotter | result['DISK_COUNT'] = '%d' % len(instance.disks) |
1408 | 2266edb2 | Guido Trotter | result['NIC_COUNT'] = '%d' % len(instance.nics) |
1409 | 2266edb2 | Guido Trotter | result['DEBUG_LEVEL'] = '%d' % debug |
1410 | 2266edb2 | Guido Trotter | for idx, disk in enumerate(instance.disks): |
1411 | 2266edb2 | Guido Trotter | real_disk = _RecursiveFindBD(disk) |
1412 | 2266edb2 | Guido Trotter | if real_disk is None: |
1413 | 2266edb2 | Guido Trotter | raise errors.BlockDeviceError("Block device '%s' is not set up" % |
1414 | 2266edb2 | Guido Trotter | str(disk))
|
1415 | 2266edb2 | Guido Trotter | real_disk.Open() |
1416 | 2266edb2 | Guido Trotter | result['DISK_%d_PATH' % idx] = real_disk.dev_path
|
1417 | 2266edb2 | Guido Trotter | # FIXME: When disks will have read-only mode, populate this
|
1418 | 2266edb2 | Guido Trotter | result['DISK_%d_ACCESS' % idx] = 'W' |
1419 | 2266edb2 | Guido Trotter | if constants.HV_DISK_TYPE in instance.hvparams: |
1420 | 2266edb2 | Guido Trotter | result['DISK_%d_FRONTEND_TYPE' % idx] = \
|
1421 | 2266edb2 | Guido Trotter | instance.hvparams[constants.HV_DISK_TYPE] |
1422 | 2266edb2 | Guido Trotter | if disk.dev_type in constants.LDS_BLOCK: |
1423 | 2266edb2 | Guido Trotter | result['DISK_%d_BACKEND_TYPE' % idx] = 'block' |
1424 | 2266edb2 | Guido Trotter | elif disk.dev_type == constants.LD_FILE:
|
1425 | 2266edb2 | Guido Trotter | result['DISK_%d_BACKEND_TYPE' % idx] = \
|
1426 | 2266edb2 | Guido Trotter | 'file:%s' % disk.physical_id[0] |
1427 | 2266edb2 | Guido Trotter | for idx, nic in enumerate(instance.nics): |
1428 | 2266edb2 | Guido Trotter | result['NIC_%d_MAC' % idx] = nic.mac
|
1429 | 2266edb2 | Guido Trotter | if nic.ip:
|
1430 | 2266edb2 | Guido Trotter | result['NIC_%d_IP' % idx] = nic.ip
|
1431 | 2266edb2 | Guido Trotter | result['NIC_%d_BRIDGE' % idx] = nic.bridge
|
1432 | 2266edb2 | Guido Trotter | if constants.HV_NIC_TYPE in instance.hvparams: |
1433 | 2266edb2 | Guido Trotter | result['NIC_%d_FRONTEND_TYPE' % idx] = \
|
1434 | 2266edb2 | Guido Trotter | instance.hvparams[constants.HV_NIC_TYPE] |
1435 | 2266edb2 | Guido Trotter | |
1436 | 2266edb2 | Guido Trotter | return result
|
1437 | a8083063 | Iustin Pop | |
1438 | 594609c0 | Iustin Pop | def GrowBlockDevice(disk, amount): |
1439 | 594609c0 | Iustin Pop | """Grow a stack of block devices.
|
1440 | 594609c0 | Iustin Pop |
|
1441 | 594609c0 | Iustin Pop | This function is called recursively, with the childrens being the
|
1442 | 10c2650b | Iustin Pop | first ones to resize.
|
1443 | 594609c0 | Iustin Pop |
|
1444 | 10c2650b | Iustin Pop | @type disk: L{objects.Disk}
|
1445 | 10c2650b | Iustin Pop | @param disk: the disk to be grown
|
1446 | 10c2650b | Iustin Pop | @rtype: (status, result)
|
1447 | 10c2650b | Iustin Pop | @return: a tuple with the status of the operation
|
1448 | 10c2650b | Iustin Pop | (True/False), and the errors message if status
|
1449 | 10c2650b | Iustin Pop | is False
|
1450 | 594609c0 | Iustin Pop |
|
1451 | 594609c0 | Iustin Pop | """
|
1452 | 594609c0 | Iustin Pop | r_dev = _RecursiveFindBD(disk) |
1453 | 594609c0 | Iustin Pop | if r_dev is None: |
1454 | 594609c0 | Iustin Pop | return False, "Cannot find block device %s" % (disk,) |
1455 | 594609c0 | Iustin Pop | |
1456 | 594609c0 | Iustin Pop | try:
|
1457 | 594609c0 | Iustin Pop | r_dev.Grow(amount) |
1458 | 594609c0 | Iustin Pop | except errors.BlockDeviceError, err:
|
1459 | 594609c0 | Iustin Pop | return False, str(err) |
1460 | 594609c0 | Iustin Pop | |
1461 | 594609c0 | Iustin Pop | return True, None |
1462 | 594609c0 | Iustin Pop | |
1463 | 594609c0 | Iustin Pop | |
1464 | a8083063 | Iustin Pop | def SnapshotBlockDevice(disk): |
1465 | a8083063 | Iustin Pop | """Create a snapshot copy of a block device.
|
1466 | a8083063 | Iustin Pop |
|
1467 | a8083063 | Iustin Pop | This function is called recursively, and the snapshot is actually created
|
1468 | a8083063 | Iustin Pop | just for the leaf lvm backend device.
|
1469 | a8083063 | Iustin Pop |
|
1470 | e9e9263d | Guido Trotter | @type disk: L{objects.Disk}
|
1471 | e9e9263d | Guido Trotter | @param disk: the disk to be snapshotted
|
1472 | e9e9263d | Guido Trotter | @rtype: string
|
1473 | e9e9263d | Guido Trotter | @return: snapshot disk path
|
1474 | a8083063 | Iustin Pop |
|
1475 | 098c0958 | Michael Hanselmann | """
|
1476 | a8083063 | Iustin Pop | if disk.children:
|
1477 | a8083063 | Iustin Pop | if len(disk.children) == 1: |
1478 | a8083063 | Iustin Pop | # only one child, let's recurse on it
|
1479 | a8083063 | Iustin Pop | return SnapshotBlockDevice(disk.children[0]) |
1480 | a8083063 | Iustin Pop | else:
|
1481 | a8083063 | Iustin Pop | # more than one child, choose one that matches
|
1482 | a8083063 | Iustin Pop | for child in disk.children: |
1483 | a8083063 | Iustin Pop | if child.size == disk.size:
|
1484 | a8083063 | Iustin Pop | # return implies breaking the loop
|
1485 | a8083063 | Iustin Pop | return SnapshotBlockDevice(child)
|
1486 | fe96220b | Iustin Pop | elif disk.dev_type == constants.LD_LV:
|
1487 | a8083063 | Iustin Pop | r_dev = _RecursiveFindBD(disk) |
1488 | a8083063 | Iustin Pop | if r_dev is not None: |
1489 | a8083063 | Iustin Pop | # let's stay on the safe side and ask for the full size, for now
|
1490 | a8083063 | Iustin Pop | return r_dev.Snapshot(disk.size)
|
1491 | a8083063 | Iustin Pop | else:
|
1492 | a8083063 | Iustin Pop | return None |
1493 | a8083063 | Iustin Pop | else:
|
1494 | 3ecf6786 | Iustin Pop | raise errors.ProgrammerError("Cannot snapshot non-lvm block device" |
1495 | f4bc1f2c | Michael Hanselmann | " '%s' of type '%s'" %
|
1496 | 3ecf6786 | Iustin Pop | (disk.unique_id, disk.dev_type)) |
1497 | a8083063 | Iustin Pop | |
1498 | a8083063 | Iustin Pop | |
1499 | 74c47259 | Iustin Pop | def ExportSnapshot(disk, dest_node, instance, cluster_name, idx): |
1500 | a8083063 | Iustin Pop | """Export a block device snapshot to a remote node.
|
1501 | a8083063 | Iustin Pop |
|
1502 | 74c47259 | Iustin Pop | @type disk: L{objects.Disk}
|
1503 | 74c47259 | Iustin Pop | @param disk: the description of the disk to export
|
1504 | 74c47259 | Iustin Pop | @type dest_node: str
|
1505 | 74c47259 | Iustin Pop | @param dest_node: the destination node to export to
|
1506 | 74c47259 | Iustin Pop | @type instance: L{objects.Instance}
|
1507 | 74c47259 | Iustin Pop | @param instance: the instance object to whom the disk belongs
|
1508 | 74c47259 | Iustin Pop | @type cluster_name: str
|
1509 | 74c47259 | Iustin Pop | @param cluster_name: the cluster name, needed for SSH hostalias
|
1510 | 74c47259 | Iustin Pop | @type idx: int
|
1511 | 74c47259 | Iustin Pop | @param idx: the index of the disk in the instance's disk list,
|
1512 | 74c47259 | Iustin Pop | used to export to the OS scripts environment
|
1513 | 10c2650b | Iustin Pop | @rtype: boolean
|
1514 | 74c47259 | Iustin Pop | @return: the success of the operation
|
1515 | a8083063 | Iustin Pop |
|
1516 | 098c0958 | Michael Hanselmann | """
|
1517 | 0607699d | Guido Trotter | export_env = OSEnvironment(instance) |
1518 | d324e3fc | Guido Trotter | |
1519 | a8083063 | Iustin Pop | inst_os = OSFromDisk(instance.os) |
1520 | a8083063 | Iustin Pop | export_script = inst_os.export_script |
1521 | a8083063 | Iustin Pop | |
1522 | a8083063 | Iustin Pop | logfile = "%s/exp-%s-%s-%s.log" % (constants.LOG_OS_DIR, inst_os.name,
|
1523 | a8083063 | Iustin Pop | instance.name, int(time.time()))
|
1524 | a8083063 | Iustin Pop | if not os.path.exists(constants.LOG_OS_DIR): |
1525 | a8083063 | Iustin Pop | os.mkdir(constants.LOG_OS_DIR, 0750)
|
1526 | 0607699d | Guido Trotter | real_disk = _RecursiveFindBD(disk) |
1527 | 0607699d | Guido Trotter | if real_disk is None: |
1528 | a8083063 | Iustin Pop | raise errors.BlockDeviceError("Block device '%s' is not set up" % |
1529 | a8083063 | Iustin Pop | str(disk))
|
1530 | 0607699d | Guido Trotter | real_disk.Open() |
1531 | 0607699d | Guido Trotter | |
1532 | 0607699d | Guido Trotter | export_env['EXPORT_DEVICE'] = real_disk.dev_path
|
1533 | 74c47259 | Iustin Pop | export_env['EXPORT_INDEX'] = str(idx) |
1534 | a8083063 | Iustin Pop | |
1535 | a8083063 | Iustin Pop | destdir = os.path.join(constants.EXPORT_DIR, instance.name + ".new")
|
1536 | a8083063 | Iustin Pop | destfile = disk.physical_id[1]
|
1537 | a8083063 | Iustin Pop | |
1538 | a8083063 | Iustin Pop | # the target command is built out of three individual commands,
|
1539 | a8083063 | Iustin Pop | # which are joined by pipes; we check each individual command for
|
1540 | a8083063 | Iustin Pop | # valid parameters
|
1541 | 0607699d | Guido Trotter | expcmd = utils.BuildShellCmd("cd %s; %s 2>%s", inst_os.path,
|
1542 | 0607699d | Guido Trotter | export_script, logfile) |
1543 | a8083063 | Iustin Pop | |
1544 | a8083063 | Iustin Pop | comprcmd = "gzip"
|
1545 | a8083063 | Iustin Pop | |
1546 | 72f0f7fd | Iustin Pop | destcmd = utils.BuildShellCmd("mkdir -p %s && cat > %s/%s",
|
1547 | 00003458 | Guido Trotter | destdir, destdir, destfile) |
1548 | 62c9ec92 | Iustin Pop | remotecmd = _GetSshRunner(cluster_name).BuildCmd(dest_node, |
1549 | 62c9ec92 | Iustin Pop | constants.GANETI_RUNAS, |
1550 | 62c9ec92 | Iustin Pop | destcmd) |
1551 | a8083063 | Iustin Pop | |
1552 | a8083063 | Iustin Pop | # all commands have been checked, so we're safe to combine them
|
1553 | 72f0f7fd | Iustin Pop | command = '|'.join([expcmd, comprcmd, utils.ShellQuoteArgs(remotecmd)])
|
1554 | a8083063 | Iustin Pop | |
1555 | 0607699d | Guido Trotter | result = utils.RunCmd(command, env=export_env) |
1556 | a8083063 | Iustin Pop | |
1557 | a8083063 | Iustin Pop | if result.failed:
|
1558 | 18682bca | Iustin Pop | logging.error("os snapshot export command '%s' returned error: %s"
|
1559 | 18682bca | Iustin Pop | " output: %s", command, result.fail_reason, result.output)
|
1560 | a8083063 | Iustin Pop | return False |
1561 | a8083063 | Iustin Pop | |
1562 | a8083063 | Iustin Pop | return True |
1563 | a8083063 | Iustin Pop | |
1564 | a8083063 | Iustin Pop | |
1565 | a8083063 | Iustin Pop | def FinalizeExport(instance, snap_disks): |
1566 | a8083063 | Iustin Pop | """Write out the export configuration information.
|
1567 | a8083063 | Iustin Pop |
|
1568 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
1569 | 10c2650b | Iustin Pop | @param instance: the instance which we export, used for
|
1570 | 10c2650b | Iustin Pop | saving configuration
|
1571 | 10c2650b | Iustin Pop | @type snap_disks: list of L{objects.Disk}
|
1572 | 10c2650b | Iustin Pop | @param snap_disks: list of snapshot block devices, which
|
1573 | 10c2650b | Iustin Pop | will be used to get the actual name of the dump file
|
1574 | a8083063 | Iustin Pop |
|
1575 | 10c2650b | Iustin Pop | @rtype: boolean
|
1576 | 10c2650b | Iustin Pop | @return: the success of the operation
|
1577 | a8083063 | Iustin Pop |
|
1578 | 098c0958 | Michael Hanselmann | """
|
1579 | a8083063 | Iustin Pop | destdir = os.path.join(constants.EXPORT_DIR, instance.name + ".new")
|
1580 | a8083063 | Iustin Pop | finaldestdir = os.path.join(constants.EXPORT_DIR, instance.name) |
1581 | a8083063 | Iustin Pop | |
1582 | a8083063 | Iustin Pop | config = objects.SerializableConfigParser() |
1583 | a8083063 | Iustin Pop | |
1584 | a8083063 | Iustin Pop | config.add_section(constants.INISECT_EXP) |
1585 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'version', '0') |
1586 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'timestamp', '%d' % int(time.time())) |
1587 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'source', instance.primary_node)
|
1588 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'os', instance.os)
|
1589 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'compression', 'gzip') |
1590 | a8083063 | Iustin Pop | |
1591 | a8083063 | Iustin Pop | config.add_section(constants.INISECT_INS) |
1592 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'name', instance.name)
|
1593 | 51de46bf | Iustin Pop | config.set(constants.INISECT_INS, 'memory', '%d' % |
1594 | 51de46bf | Iustin Pop | instance.beparams[constants.BE_MEMORY]) |
1595 | 51de46bf | Iustin Pop | config.set(constants.INISECT_INS, 'vcpus', '%d' % |
1596 | 51de46bf | Iustin Pop | instance.beparams[constants.BE_VCPUS]) |
1597 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'disk_template', instance.disk_template)
|
1598 | 66f93869 | Manuel Franceschini | |
1599 | 66f93869 | Manuel Franceschini | nic_count = 0
|
1600 | a8083063 | Iustin Pop | for nic_count, nic in enumerate(instance.nics): |
1601 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'nic%d_mac' %
|
1602 | a8083063 | Iustin Pop | nic_count, '%s' % nic.mac)
|
1603 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'nic%d_ip' % nic_count, '%s' % nic.ip) |
1604 | 38206f3c | Iustin Pop | config.set(constants.INISECT_INS, 'nic%d_bridge' % nic_count,
|
1605 | 38206f3c | Iustin Pop | '%s' % nic.bridge)
|
1606 | a8083063 | Iustin Pop | # TODO: redundant: on load can read nics until it doesn't exist
|
1607 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'nic_count' , '%d' % nic_count) |
1608 | a8083063 | Iustin Pop | |
1609 | 726d7d68 | Iustin Pop | disk_total = 0
|
1610 | a8083063 | Iustin Pop | for disk_count, disk in enumerate(snap_disks): |
1611 | 19d7f90a | Guido Trotter | if disk:
|
1612 | 726d7d68 | Iustin Pop | disk_total += 1
|
1613 | 19d7f90a | Guido Trotter | config.set(constants.INISECT_INS, 'disk%d_ivname' % disk_count,
|
1614 | 19d7f90a | Guido Trotter | ('%s' % disk.iv_name))
|
1615 | 19d7f90a | Guido Trotter | config.set(constants.INISECT_INS, 'disk%d_dump' % disk_count,
|
1616 | 19d7f90a | Guido Trotter | ('%s' % disk.physical_id[1])) |
1617 | 19d7f90a | Guido Trotter | config.set(constants.INISECT_INS, 'disk%d_size' % disk_count,
|
1618 | 19d7f90a | Guido Trotter | ('%d' % disk.size))
|
1619 | a8083063 | Iustin Pop | |
1620 | 726d7d68 | Iustin Pop | config.set(constants.INISECT_INS, 'disk_count' , '%d' % disk_total) |
1621 | a8083063 | Iustin Pop | |
1622 | 726d7d68 | Iustin Pop | utils.WriteFile(os.path.join(destdir, constants.EXPORT_CONF_FILE), |
1623 | 726d7d68 | Iustin Pop | data=config.Dumps()) |
1624 | a8083063 | Iustin Pop | shutil.rmtree(finaldestdir, True)
|
1625 | a8083063 | Iustin Pop | shutil.move(destdir, finaldestdir) |
1626 | a8083063 | Iustin Pop | |
1627 | a8083063 | Iustin Pop | return True |
1628 | a8083063 | Iustin Pop | |
1629 | a8083063 | Iustin Pop | |
1630 | a8083063 | Iustin Pop | def ExportInfo(dest): |
1631 | a8083063 | Iustin Pop | """Get export configuration information.
|
1632 | a8083063 | Iustin Pop |
|
1633 | 10c2650b | Iustin Pop | @type dest: str
|
1634 | 10c2650b | Iustin Pop | @param dest: directory containing the export
|
1635 | a8083063 | Iustin Pop |
|
1636 | 10c2650b | Iustin Pop | @rtype: L{objects.SerializableConfigParser}
|
1637 | 10c2650b | Iustin Pop | @return: a serializable config file containing the
|
1638 | 10c2650b | Iustin Pop | export info
|
1639 | a8083063 | Iustin Pop |
|
1640 | a8083063 | Iustin Pop | """
|
1641 | a8083063 | Iustin Pop | cff = os.path.join(dest, constants.EXPORT_CONF_FILE) |
1642 | a8083063 | Iustin Pop | |
1643 | a8083063 | Iustin Pop | config = objects.SerializableConfigParser() |
1644 | a8083063 | Iustin Pop | config.read(cff) |
1645 | a8083063 | Iustin Pop | |
1646 | a8083063 | Iustin Pop | if (not config.has_section(constants.INISECT_EXP) or |
1647 | a8083063 | Iustin Pop | not config.has_section(constants.INISECT_INS)):
|
1648 | a8083063 | Iustin Pop | return None |
1649 | a8083063 | Iustin Pop | |
1650 | a8083063 | Iustin Pop | return config
|
1651 | a8083063 | Iustin Pop | |
1652 | a8083063 | Iustin Pop | |
1653 | 6c0af70e | Guido Trotter | def ImportOSIntoInstance(instance, src_node, src_images, cluster_name): |
1654 | a8083063 | Iustin Pop | """Import an os image into an instance.
|
1655 | a8083063 | Iustin Pop |
|
1656 | b1206984 | Iustin Pop | @type instance: L{objects.Instance}
|
1657 | 6c0af70e | Guido Trotter | @param instance: instance to import the disks into
|
1658 | 6c0af70e | Guido Trotter | @type src_node: string
|
1659 | 6c0af70e | Guido Trotter | @param src_node: source node for the disk images
|
1660 | 6c0af70e | Guido Trotter | @type src_images: list of string
|
1661 | 6c0af70e | Guido Trotter | @param src_images: absolute paths of the disk images
|
1662 | 6c0af70e | Guido Trotter | @rtype: list of boolean
|
1663 | 6c0af70e | Guido Trotter | @return: each boolean represent the success of importing the n-th disk
|
1664 | a8083063 | Iustin Pop |
|
1665 | a8083063 | Iustin Pop | """
|
1666 | 6c0af70e | Guido Trotter | import_env = OSEnvironment(instance) |
1667 | a8083063 | Iustin Pop | inst_os = OSFromDisk(instance.os) |
1668 | a8083063 | Iustin Pop | import_script = inst_os.import_script |
1669 | a8083063 | Iustin Pop | |
1670 | a8083063 | Iustin Pop | logfile = "%s/import-%s-%s-%s.log" % (constants.LOG_OS_DIR, instance.os,
|
1671 | a8083063 | Iustin Pop | instance.name, int(time.time()))
|
1672 | a8083063 | Iustin Pop | if not os.path.exists(constants.LOG_OS_DIR): |
1673 | a8083063 | Iustin Pop | os.mkdir(constants.LOG_OS_DIR, 0750)
|
1674 | a8083063 | Iustin Pop | |
1675 | a8083063 | Iustin Pop | comprcmd = "gunzip"
|
1676 | d868edb4 | Iustin Pop | impcmd = utils.BuildShellCmd("(cd %s; %s >%s 2>&1)", inst_os.path,
|
1677 | d868edb4 | Iustin Pop | import_script, logfile) |
1678 | a8083063 | Iustin Pop | |
1679 | 6c0af70e | Guido Trotter | final_result = [] |
1680 | 6c0af70e | Guido Trotter | for idx, image in enumerate(src_images): |
1681 | 6c0af70e | Guido Trotter | if image:
|
1682 | 6c0af70e | Guido Trotter | destcmd = utils.BuildShellCmd('cat %s', image)
|
1683 | 6c0af70e | Guido Trotter | remotecmd = _GetSshRunner(cluster_name).BuildCmd(src_node, |
1684 | 6c0af70e | Guido Trotter | constants.GANETI_RUNAS, |
1685 | 6c0af70e | Guido Trotter | destcmd) |
1686 | 6c0af70e | Guido Trotter | command = '|'.join([utils.ShellQuoteArgs(remotecmd), comprcmd, impcmd])
|
1687 | 6c0af70e | Guido Trotter | import_env['IMPORT_DEVICE'] = import_env['DISK_%d_PATH' % idx] |
1688 | 74c47259 | Iustin Pop | import_env['IMPORT_INDEX'] = str(idx) |
1689 | 6c0af70e | Guido Trotter | result = utils.RunCmd(command, env=import_env) |
1690 | 6c0af70e | Guido Trotter | if result.failed:
|
1691 | 726d7d68 | Iustin Pop | logging.error("Disk import command '%s' returned error: %s"
|
1692 | 726d7d68 | Iustin Pop | " output: %s", command, result.fail_reason,
|
1693 | 726d7d68 | Iustin Pop | result.output) |
1694 | 6c0af70e | Guido Trotter | final_result.append(False)
|
1695 | 6c0af70e | Guido Trotter | else:
|
1696 | 6c0af70e | Guido Trotter | final_result.append(True)
|
1697 | 6c0af70e | Guido Trotter | else:
|
1698 | 6c0af70e | Guido Trotter | final_result.append(True)
|
1699 | a8083063 | Iustin Pop | |
1700 | 6c0af70e | Guido Trotter | return final_result
|
1701 | a8083063 | Iustin Pop | |
1702 | a8083063 | Iustin Pop | |
1703 | a8083063 | Iustin Pop | def ListExports(): |
1704 | a8083063 | Iustin Pop | """Return a list of exports currently available on this machine.
|
1705 | 098c0958 | Michael Hanselmann |
|
1706 | 10c2650b | Iustin Pop | @rtype: list
|
1707 | 10c2650b | Iustin Pop | @return: list of the exports
|
1708 | 10c2650b | Iustin Pop |
|
1709 | a8083063 | Iustin Pop | """
|
1710 | a8083063 | Iustin Pop | if os.path.isdir(constants.EXPORT_DIR):
|
1711 | eedbda4b | Michael Hanselmann | return utils.ListVisibleFiles(constants.EXPORT_DIR)
|
1712 | a8083063 | Iustin Pop | else:
|
1713 | a8083063 | Iustin Pop | return []
|
1714 | a8083063 | Iustin Pop | |
1715 | a8083063 | Iustin Pop | |
1716 | a8083063 | Iustin Pop | def RemoveExport(export): |
1717 | a8083063 | Iustin Pop | """Remove an existing export from the node.
|
1718 | a8083063 | Iustin Pop |
|
1719 | 10c2650b | Iustin Pop | @type export: str
|
1720 | 10c2650b | Iustin Pop | @param export: the name of the export to remove
|
1721 | 10c2650b | Iustin Pop | @rtype: boolean
|
1722 | 10c2650b | Iustin Pop | @return: the success of the operation
|
1723 | a8083063 | Iustin Pop |
|
1724 | 098c0958 | Michael Hanselmann | """
|
1725 | a8083063 | Iustin Pop | target = os.path.join(constants.EXPORT_DIR, export) |
1726 | a8083063 | Iustin Pop | |
1727 | a8083063 | Iustin Pop | shutil.rmtree(target) |
1728 | a8083063 | Iustin Pop | # TODO: catch some of the relevant exceptions and provide a pretty
|
1729 | a8083063 | Iustin Pop | # error message if rmtree fails.
|
1730 | a8083063 | Iustin Pop | |
1731 | a8083063 | Iustin Pop | return True |
1732 | a8083063 | Iustin Pop | |
1733 | a8083063 | Iustin Pop | |
1734 | f3e513ad | Iustin Pop | def RenameBlockDevices(devlist): |
1735 | f3e513ad | Iustin Pop | """Rename a list of block devices.
|
1736 | f3e513ad | Iustin Pop |
|
1737 | 10c2650b | Iustin Pop | @type devlist: list of tuples
|
1738 | 10c2650b | Iustin Pop | @param devlist: list of tuples of the form (disk,
|
1739 | 10c2650b | Iustin Pop | new_logical_id, new_physical_id); disk is an
|
1740 | 10c2650b | Iustin Pop | L{objects.Disk} object describing the current disk,
|
1741 | 10c2650b | Iustin Pop | and new logical_id/physical_id is the name we
|
1742 | 10c2650b | Iustin Pop | rename it to
|
1743 | 10c2650b | Iustin Pop | @rtype: boolean
|
1744 | 10c2650b | Iustin Pop | @return: True if all renames succeeded, False otherwise
|
1745 | f3e513ad | Iustin Pop |
|
1746 | f3e513ad | Iustin Pop | """
|
1747 | f3e513ad | Iustin Pop | result = True
|
1748 | f3e513ad | Iustin Pop | for disk, unique_id in devlist: |
1749 | f3e513ad | Iustin Pop | dev = _RecursiveFindBD(disk) |
1750 | f3e513ad | Iustin Pop | if dev is None: |
1751 | f3e513ad | Iustin Pop | result = False
|
1752 | f3e513ad | Iustin Pop | continue
|
1753 | f3e513ad | Iustin Pop | try:
|
1754 | 3f78eef2 | Iustin Pop | old_rpath = dev.dev_path |
1755 | f3e513ad | Iustin Pop | dev.Rename(unique_id) |
1756 | 3f78eef2 | Iustin Pop | new_rpath = dev.dev_path |
1757 | 3f78eef2 | Iustin Pop | if old_rpath != new_rpath:
|
1758 | 3f78eef2 | Iustin Pop | DevCacheManager.RemoveCache(old_rpath) |
1759 | 3f78eef2 | Iustin Pop | # FIXME: we should add the new cache information here, like:
|
1760 | 3f78eef2 | Iustin Pop | # DevCacheManager.UpdateCache(new_rpath, owner, ...)
|
1761 | 3f78eef2 | Iustin Pop | # but we don't have the owner here - maybe parse from existing
|
1762 | 3f78eef2 | Iustin Pop | # cache? for now, we only lose lvm data when we rename, which
|
1763 | 3f78eef2 | Iustin Pop | # is less critical than DRBD or MD
|
1764 | f3e513ad | Iustin Pop | except errors.BlockDeviceError, err:
|
1765 | 18682bca | Iustin Pop | logging.exception("Can't rename device '%s' to '%s'", dev, unique_id)
|
1766 | f3e513ad | Iustin Pop | result = False
|
1767 | f3e513ad | Iustin Pop | return result
|
1768 | f3e513ad | Iustin Pop | |
1769 | f3e513ad | Iustin Pop | |
1770 | 778b75bb | Manuel Franceschini | def _TransformFileStorageDir(file_storage_dir): |
1771 | 778b75bb | Manuel Franceschini | """Checks whether given file_storage_dir is valid.
|
1772 | 778b75bb | Manuel Franceschini |
|
1773 | 778b75bb | Manuel Franceschini | Checks wheter the given file_storage_dir is within the cluster-wide
|
1774 | 778b75bb | Manuel Franceschini | default file_storage_dir stored in SimpleStore. Only paths under that
|
1775 | 778b75bb | Manuel Franceschini | directory are allowed.
|
1776 | 778b75bb | Manuel Franceschini |
|
1777 | b1206984 | Iustin Pop | @type file_storage_dir: str
|
1778 | b1206984 | Iustin Pop | @param file_storage_dir: the path to check
|
1779 | d61cbe76 | Iustin Pop |
|
1780 | b1206984 | Iustin Pop | @return: the normalized path if valid, None otherwise
|
1781 | 778b75bb | Manuel Franceschini |
|
1782 | 778b75bb | Manuel Franceschini | """
|
1783 | c657dcc9 | Michael Hanselmann | cfg = _GetConfig() |
1784 | 778b75bb | Manuel Franceschini | file_storage_dir = os.path.normpath(file_storage_dir) |
1785 | c657dcc9 | Michael Hanselmann | base_file_storage_dir = cfg.GetFileStorageDir() |
1786 | 778b75bb | Manuel Franceschini | if (not os.path.commonprefix([file_storage_dir, base_file_storage_dir]) == |
1787 | 778b75bb | Manuel Franceschini | base_file_storage_dir): |
1788 | 18682bca | Iustin Pop | logging.error("file storage directory '%s' is not under base file"
|
1789 | 18682bca | Iustin Pop | " storage directory '%s'",
|
1790 | 18682bca | Iustin Pop | file_storage_dir, base_file_storage_dir) |
1791 | 778b75bb | Manuel Franceschini | return None |
1792 | 778b75bb | Manuel Franceschini | return file_storage_dir
|
1793 | 778b75bb | Manuel Franceschini | |
1794 | 778b75bb | Manuel Franceschini | |
1795 | 778b75bb | Manuel Franceschini | def CreateFileStorageDir(file_storage_dir): |
1796 | 778b75bb | Manuel Franceschini | """Create file storage directory.
|
1797 | 778b75bb | Manuel Franceschini |
|
1798 | b1206984 | Iustin Pop | @type file_storage_dir: str
|
1799 | b1206984 | Iustin Pop | @param file_storage_dir: directory to create
|
1800 | 778b75bb | Manuel Franceschini |
|
1801 | b1206984 | Iustin Pop | @rtype: tuple
|
1802 | b1206984 | Iustin Pop | @return: tuple with first element a boolean indicating wheter dir
|
1803 | b1206984 | Iustin Pop | creation was successful or not
|
1804 | 778b75bb | Manuel Franceschini |
|
1805 | 778b75bb | Manuel Franceschini | """
|
1806 | 778b75bb | Manuel Franceschini | file_storage_dir = _TransformFileStorageDir(file_storage_dir) |
1807 | 778b75bb | Manuel Franceschini | result = True,
|
1808 | 778b75bb | Manuel Franceschini | if not file_storage_dir: |
1809 | 778b75bb | Manuel Franceschini | result = False,
|
1810 | 778b75bb | Manuel Franceschini | else:
|
1811 | 778b75bb | Manuel Franceschini | if os.path.exists(file_storage_dir):
|
1812 | 778b75bb | Manuel Franceschini | if not os.path.isdir(file_storage_dir): |
1813 | 18682bca | Iustin Pop | logging.error("'%s' is not a directory", file_storage_dir)
|
1814 | 778b75bb | Manuel Franceschini | result = False,
|
1815 | 778b75bb | Manuel Franceschini | else:
|
1816 | 778b75bb | Manuel Franceschini | try:
|
1817 | 778b75bb | Manuel Franceschini | os.makedirs(file_storage_dir, 0750)
|
1818 | 778b75bb | Manuel Franceschini | except OSError, err: |
1819 | 18682bca | Iustin Pop | logging.error("Cannot create file storage directory '%s': %s",
|
1820 | 18682bca | Iustin Pop | file_storage_dir, err) |
1821 | 778b75bb | Manuel Franceschini | result = False,
|
1822 | 778b75bb | Manuel Franceschini | return result
|
1823 | 778b75bb | Manuel Franceschini | |
1824 | 778b75bb | Manuel Franceschini | |
1825 | 778b75bb | Manuel Franceschini | def RemoveFileStorageDir(file_storage_dir): |
1826 | 778b75bb | Manuel Franceschini | """Remove file storage directory.
|
1827 | 778b75bb | Manuel Franceschini |
|
1828 | 778b75bb | Manuel Franceschini | Remove it only if it's empty. If not log an error and return.
|
1829 | 778b75bb | Manuel Franceschini |
|
1830 | 10c2650b | Iustin Pop | @type file_storage_dir: str
|
1831 | 10c2650b | Iustin Pop | @param file_storage_dir: the directory we should cleanup
|
1832 | 10c2650b | Iustin Pop | @rtype: tuple (success,)
|
1833 | 10c2650b | Iustin Pop | @return: tuple of one element, C{success}, denoting
|
1834 | 10c2650b | Iustin Pop | whether the operation was successfull
|
1835 | 778b75bb | Manuel Franceschini |
|
1836 | 778b75bb | Manuel Franceschini | """
|
1837 | 778b75bb | Manuel Franceschini | file_storage_dir = _TransformFileStorageDir(file_storage_dir) |
1838 | 778b75bb | Manuel Franceschini | result = True,
|
1839 | 778b75bb | Manuel Franceschini | if not file_storage_dir: |
1840 | 778b75bb | Manuel Franceschini | result = False,
|
1841 | 778b75bb | Manuel Franceschini | else:
|
1842 | 778b75bb | Manuel Franceschini | if os.path.exists(file_storage_dir):
|
1843 | 778b75bb | Manuel Franceschini | if not os.path.isdir(file_storage_dir): |
1844 | 18682bca | Iustin Pop | logging.error("'%s' is not a directory", file_storage_dir)
|
1845 | 778b75bb | Manuel Franceschini | result = False,
|
1846 | 778b75bb | Manuel Franceschini | # deletes dir only if empty, otherwise we want to return False
|
1847 | 778b75bb | Manuel Franceschini | try:
|
1848 | 778b75bb | Manuel Franceschini | os.rmdir(file_storage_dir) |
1849 | 778b75bb | Manuel Franceschini | except OSError, err: |
1850 | 18682bca | Iustin Pop | logging.exception("Cannot remove file storage directory '%s'",
|
1851 | 18682bca | Iustin Pop | file_storage_dir) |
1852 | 778b75bb | Manuel Franceschini | result = False,
|
1853 | 778b75bb | Manuel Franceschini | return result
|
1854 | 778b75bb | Manuel Franceschini | |
1855 | 778b75bb | Manuel Franceschini | |
1856 | 778b75bb | Manuel Franceschini | def RenameFileStorageDir(old_file_storage_dir, new_file_storage_dir): |
1857 | 778b75bb | Manuel Franceschini | """Rename the file storage directory.
|
1858 | 778b75bb | Manuel Franceschini |
|
1859 | 10c2650b | Iustin Pop | @type old_file_storage_dir: str
|
1860 | 10c2650b | Iustin Pop | @param old_file_storage_dir: the current path
|
1861 | 10c2650b | Iustin Pop | @type new_file_storage_dir: str
|
1862 | 10c2650b | Iustin Pop | @param new_file_storage_dir: the name we should rename to
|
1863 | 10c2650b | Iustin Pop | @rtype: tuple (success,)
|
1864 | 10c2650b | Iustin Pop | @return: tuple of one element, C{success}, denoting
|
1865 | 10c2650b | Iustin Pop | whether the operation was successful
|
1866 | 778b75bb | Manuel Franceschini |
|
1867 | 778b75bb | Manuel Franceschini | """
|
1868 | 778b75bb | Manuel Franceschini | old_file_storage_dir = _TransformFileStorageDir(old_file_storage_dir) |
1869 | 778b75bb | Manuel Franceschini | new_file_storage_dir = _TransformFileStorageDir(new_file_storage_dir) |
1870 | 778b75bb | Manuel Franceschini | result = True,
|
1871 | 778b75bb | Manuel Franceschini | if not old_file_storage_dir or not new_file_storage_dir: |
1872 | 778b75bb | Manuel Franceschini | result = False,
|
1873 | 778b75bb | Manuel Franceschini | else:
|
1874 | 778b75bb | Manuel Franceschini | if not os.path.exists(new_file_storage_dir): |
1875 | 778b75bb | Manuel Franceschini | if os.path.isdir(old_file_storage_dir):
|
1876 | 778b75bb | Manuel Franceschini | try:
|
1877 | 778b75bb | Manuel Franceschini | os.rename(old_file_storage_dir, new_file_storage_dir) |
1878 | 778b75bb | Manuel Franceschini | except OSError, err: |
1879 | 18682bca | Iustin Pop | logging.exception("Cannot rename '%s' to '%s'",
|
1880 | 18682bca | Iustin Pop | old_file_storage_dir, new_file_storage_dir) |
1881 | 778b75bb | Manuel Franceschini | result = False,
|
1882 | 778b75bb | Manuel Franceschini | else:
|
1883 | 18682bca | Iustin Pop | logging.error("'%s' is not a directory", old_file_storage_dir)
|
1884 | 778b75bb | Manuel Franceschini | result = False,
|
1885 | 778b75bb | Manuel Franceschini | else:
|
1886 | 778b75bb | Manuel Franceschini | if os.path.exists(old_file_storage_dir):
|
1887 | 18682bca | Iustin Pop | logging.error("Cannot rename '%s' to '%s'. Both locations exist.",
|
1888 | 18682bca | Iustin Pop | old_file_storage_dir, new_file_storage_dir) |
1889 | 778b75bb | Manuel Franceschini | result = False,
|
1890 | 778b75bb | Manuel Franceschini | return result
|
1891 | 778b75bb | Manuel Franceschini | |
1892 | 778b75bb | Manuel Franceschini | |
1893 | dc31eae3 | Michael Hanselmann | def _IsJobQueueFile(file_name): |
1894 | dc31eae3 | Michael Hanselmann | """Checks whether the given filename is in the queue directory.
|
1895 | ca52cdeb | Michael Hanselmann |
|
1896 | 10c2650b | Iustin Pop | @type file_name: str
|
1897 | 10c2650b | Iustin Pop | @param file_name: the file name we should check
|
1898 | 10c2650b | Iustin Pop | @rtype: boolean
|
1899 | 10c2650b | Iustin Pop | @return: whether the file is under the queue directory
|
1900 | 10c2650b | Iustin Pop |
|
1901 | ca52cdeb | Michael Hanselmann | """
|
1902 | ca52cdeb | Michael Hanselmann | queue_dir = os.path.normpath(constants.QUEUE_DIR) |
1903 | dc31eae3 | Michael Hanselmann | result = (os.path.commonprefix([queue_dir, file_name]) == queue_dir) |
1904 | dc31eae3 | Michael Hanselmann | |
1905 | dc31eae3 | Michael Hanselmann | if not result: |
1906 | ca52cdeb | Michael Hanselmann | logging.error("'%s' is not a file in the queue directory",
|
1907 | ca52cdeb | Michael Hanselmann | file_name) |
1908 | dc31eae3 | Michael Hanselmann | |
1909 | dc31eae3 | Michael Hanselmann | return result
|
1910 | dc31eae3 | Michael Hanselmann | |
1911 | dc31eae3 | Michael Hanselmann | |
1912 | dc31eae3 | Michael Hanselmann | def JobQueueUpdate(file_name, content): |
1913 | dc31eae3 | Michael Hanselmann | """Updates a file in the queue directory.
|
1914 | dc31eae3 | Michael Hanselmann |
|
1915 | 10c2650b | Iustin Pop | This is just a wrapper over L{utils.WriteFile}, with proper
|
1916 | 10c2650b | Iustin Pop | checking.
|
1917 | 10c2650b | Iustin Pop |
|
1918 | 10c2650b | Iustin Pop | @type file_name: str
|
1919 | 10c2650b | Iustin Pop | @param file_name: the job file name
|
1920 | 10c2650b | Iustin Pop | @type content: str
|
1921 | 10c2650b | Iustin Pop | @param content: the new job contents
|
1922 | 10c2650b | Iustin Pop | @rtype: boolean
|
1923 | 10c2650b | Iustin Pop | @return: the success of the operation
|
1924 | 10c2650b | Iustin Pop |
|
1925 | dc31eae3 | Michael Hanselmann | """
|
1926 | dc31eae3 | Michael Hanselmann | if not _IsJobQueueFile(file_name): |
1927 | ca52cdeb | Michael Hanselmann | return False |
1928 | ca52cdeb | Michael Hanselmann | |
1929 | ca52cdeb | Michael Hanselmann | # Write and replace the file atomically
|
1930 | ca52cdeb | Michael Hanselmann | utils.WriteFile(file_name, data=content) |
1931 | ca52cdeb | Michael Hanselmann | |
1932 | ca52cdeb | Michael Hanselmann | return True |
1933 | ca52cdeb | Michael Hanselmann | |
1934 | ca52cdeb | Michael Hanselmann | |
1935 | af5ebcb1 | Michael Hanselmann | def JobQueueRename(old, new): |
1936 | af5ebcb1 | Michael Hanselmann | """Renames a job queue file.
|
1937 | af5ebcb1 | Michael Hanselmann |
|
1938 | 10c2650b | Iustin Pop | This is just a wrapper over L{os.rename} with proper checking.
|
1939 | 10c2650b | Iustin Pop |
|
1940 | 10c2650b | Iustin Pop | @type old: str
|
1941 | 10c2650b | Iustin Pop | @param old: the old (actual) file name
|
1942 | 10c2650b | Iustin Pop | @type new: str
|
1943 | 10c2650b | Iustin Pop | @param new: the desired file name
|
1944 | 10c2650b | Iustin Pop | @rtype: boolean
|
1945 | 10c2650b | Iustin Pop | @return: the success of the operation
|
1946 | 10c2650b | Iustin Pop |
|
1947 | af5ebcb1 | Michael Hanselmann | """
|
1948 | af5ebcb1 | Michael Hanselmann | if not (_IsJobQueueFile(old) and _IsJobQueueFile(new)): |
1949 | af5ebcb1 | Michael Hanselmann | return False |
1950 | af5ebcb1 | Michael Hanselmann | |
1951 | af5ebcb1 | Michael Hanselmann | os.rename(old, new) |
1952 | af5ebcb1 | Michael Hanselmann | |
1953 | af5ebcb1 | Michael Hanselmann | return True |
1954 | af5ebcb1 | Michael Hanselmann | |
1955 | af5ebcb1 | Michael Hanselmann | |
1956 | 5d672980 | Iustin Pop | def JobQueueSetDrainFlag(drain_flag): |
1957 | 5d672980 | Iustin Pop | """Set the drain flag for the queue.
|
1958 | 5d672980 | Iustin Pop |
|
1959 | 5d672980 | Iustin Pop | This will set or unset the queue drain flag.
|
1960 | 5d672980 | Iustin Pop |
|
1961 | 10c2650b | Iustin Pop | @type drain_flag: boolean
|
1962 | 5d672980 | Iustin Pop | @param drain_flag: if True, will set the drain flag, otherwise reset it.
|
1963 | 10c2650b | Iustin Pop | @rtype: boolean
|
1964 | 10c2650b | Iustin Pop | @return: always True
|
1965 | 10c2650b | Iustin Pop | @warning: the function always returns True
|
1966 | 5d672980 | Iustin Pop |
|
1967 | 5d672980 | Iustin Pop | """
|
1968 | 5d672980 | Iustin Pop | if drain_flag:
|
1969 | 5d672980 | Iustin Pop | utils.WriteFile(constants.JOB_QUEUE_DRAIN_FILE, data="", close=True) |
1970 | 5d672980 | Iustin Pop | else:
|
1971 | 5d672980 | Iustin Pop | utils.RemoveFile(constants.JOB_QUEUE_DRAIN_FILE) |
1972 | 5d672980 | Iustin Pop | |
1973 | 5d672980 | Iustin Pop | return True |
1974 | 5d672980 | Iustin Pop | |
1975 | 5d672980 | Iustin Pop | |
1976 | d61cbe76 | Iustin Pop | def CloseBlockDevices(disks): |
1977 | d61cbe76 | Iustin Pop | """Closes the given block devices.
|
1978 | d61cbe76 | Iustin Pop |
|
1979 | 10c2650b | Iustin Pop | This means they will be switched to secondary mode (in case of
|
1980 | 10c2650b | Iustin Pop | DRBD).
|
1981 | 10c2650b | Iustin Pop |
|
1982 | 10c2650b | Iustin Pop | @type disks: list of L{objects.Disk}
|
1983 | 10c2650b | Iustin Pop | @param disks: the list of disks to be closed
|
1984 | 10c2650b | Iustin Pop | @rtype: tuple (success, message)
|
1985 | 10c2650b | Iustin Pop | @return: a tuple of success and message, where success
|
1986 | 10c2650b | Iustin Pop | indicates the succes of the operation, and message
|
1987 | 10c2650b | Iustin Pop | which will contain the error details in case we
|
1988 | 10c2650b | Iustin Pop | failed
|
1989 | d61cbe76 | Iustin Pop |
|
1990 | d61cbe76 | Iustin Pop | """
|
1991 | d61cbe76 | Iustin Pop | bdevs = [] |
1992 | d61cbe76 | Iustin Pop | for cf in disks: |
1993 | d61cbe76 | Iustin Pop | rd = _RecursiveFindBD(cf) |
1994 | d61cbe76 | Iustin Pop | if rd is None: |
1995 | d61cbe76 | Iustin Pop | return (False, "Can't find device %s" % cf) |
1996 | d61cbe76 | Iustin Pop | bdevs.append(rd) |
1997 | d61cbe76 | Iustin Pop | |
1998 | d61cbe76 | Iustin Pop | msg = [] |
1999 | d61cbe76 | Iustin Pop | for rd in bdevs: |
2000 | d61cbe76 | Iustin Pop | try:
|
2001 | d61cbe76 | Iustin Pop | rd.Close() |
2002 | d61cbe76 | Iustin Pop | except errors.BlockDeviceError, err:
|
2003 | d61cbe76 | Iustin Pop | msg.append(str(err))
|
2004 | d61cbe76 | Iustin Pop | if msg:
|
2005 | d61cbe76 | Iustin Pop | return (False, "Can't make devices secondary: %s" % ",".join(msg)) |
2006 | d61cbe76 | Iustin Pop | else:
|
2007 | d61cbe76 | Iustin Pop | return (True, "All devices secondary") |
2008 | d61cbe76 | Iustin Pop | |
2009 | d61cbe76 | Iustin Pop | |
2010 | 6217e295 | Iustin Pop | def ValidateHVParams(hvname, hvparams): |
2011 | 6217e295 | Iustin Pop | """Validates the given hypervisor parameters.
|
2012 | 6217e295 | Iustin Pop |
|
2013 | 6217e295 | Iustin Pop | @type hvname: string
|
2014 | 6217e295 | Iustin Pop | @param hvname: the hypervisor name
|
2015 | 6217e295 | Iustin Pop | @type hvparams: dict
|
2016 | 6217e295 | Iustin Pop | @param hvparams: the hypervisor parameters to be validated
|
2017 | 10c2650b | Iustin Pop | @rtype: tuple (success, message)
|
2018 | 10c2650b | Iustin Pop | @return: a tuple of success and message, where success
|
2019 | 10c2650b | Iustin Pop | indicates the succes of the operation, and message
|
2020 | 10c2650b | Iustin Pop | which will contain the error details in case we
|
2021 | 10c2650b | Iustin Pop | failed
|
2022 | 6217e295 | Iustin Pop |
|
2023 | 6217e295 | Iustin Pop | """
|
2024 | 6217e295 | Iustin Pop | try:
|
2025 | 6217e295 | Iustin Pop | hv_type = hypervisor.GetHypervisor(hvname) |
2026 | 6217e295 | Iustin Pop | hv_type.ValidateParameters(hvparams) |
2027 | 6217e295 | Iustin Pop | return (True, "Validation passed") |
2028 | 6217e295 | Iustin Pop | except errors.HypervisorError, err:
|
2029 | 6217e295 | Iustin Pop | return (False, str(err)) |
2030 | 6217e295 | Iustin Pop | |
2031 | 6217e295 | Iustin Pop | |
2032 | a8083063 | Iustin Pop | class HooksRunner(object): |
2033 | a8083063 | Iustin Pop | """Hook runner.
|
2034 | a8083063 | Iustin Pop |
|
2035 | 10c2650b | Iustin Pop | This class is instantiated on the node side (ganeti-noded) and not
|
2036 | 10c2650b | Iustin Pop | on the master side.
|
2037 | a8083063 | Iustin Pop |
|
2038 | a8083063 | Iustin Pop | """
|
2039 | a8083063 | Iustin Pop | RE_MASK = re.compile("^[a-zA-Z0-9_-]+$")
|
2040 | a8083063 | Iustin Pop | |
2041 | a8083063 | Iustin Pop | def __init__(self, hooks_base_dir=None): |
2042 | a8083063 | Iustin Pop | """Constructor for hooks runner.
|
2043 | a8083063 | Iustin Pop |
|
2044 | 10c2650b | Iustin Pop | @type hooks_base_dir: str or None
|
2045 | 10c2650b | Iustin Pop | @param hooks_base_dir: if not None, this overrides the
|
2046 | 10c2650b | Iustin Pop | L{constants.HOOKS_BASE_DIR} (useful for unittests)
|
2047 | a8083063 | Iustin Pop |
|
2048 | a8083063 | Iustin Pop | """
|
2049 | a8083063 | Iustin Pop | if hooks_base_dir is None: |
2050 | a8083063 | Iustin Pop | hooks_base_dir = constants.HOOKS_BASE_DIR |
2051 | a8083063 | Iustin Pop | self._BASE_DIR = hooks_base_dir
|
2052 | a8083063 | Iustin Pop | |
2053 | a8083063 | Iustin Pop | @staticmethod
|
2054 | a8083063 | Iustin Pop | def ExecHook(script, env): |
2055 | a8083063 | Iustin Pop | """Exec one hook script.
|
2056 | a8083063 | Iustin Pop |
|
2057 | 10c2650b | Iustin Pop | @type script: str
|
2058 | 10c2650b | Iustin Pop | @param script: the full path to the script
|
2059 | 10c2650b | Iustin Pop | @type env: dict
|
2060 | 10c2650b | Iustin Pop | @param env: the environment with which to exec the script
|
2061 | 10c2650b | Iustin Pop | @rtype: tuple (success, message)
|
2062 | 10c2650b | Iustin Pop | @return: a tuple of success and message, where success
|
2063 | 10c2650b | Iustin Pop | indicates the succes of the operation, and message
|
2064 | 10c2650b | Iustin Pop | which will contain the error details in case we
|
2065 | 10c2650b | Iustin Pop | failed
|
2066 | a8083063 | Iustin Pop |
|
2067 | a8083063 | Iustin Pop | """
|
2068 | a8083063 | Iustin Pop | # exec the process using subprocess and log the output
|
2069 | a8083063 | Iustin Pop | fdstdin = None
|
2070 | a8083063 | Iustin Pop | try:
|
2071 | a8083063 | Iustin Pop | fdstdin = open("/dev/null", "r") |
2072 | a8083063 | Iustin Pop | child = subprocess.Popen([script], stdin=fdstdin, stdout=subprocess.PIPE, |
2073 | a8083063 | Iustin Pop | stderr=subprocess.STDOUT, close_fds=True,
|
2074 | 147af04d | Iustin Pop | shell=False, cwd="/", env=env) |
2075 | a8083063 | Iustin Pop | output = ""
|
2076 | a8083063 | Iustin Pop | try:
|
2077 | a8083063 | Iustin Pop | output = child.stdout.read(4096)
|
2078 | a8083063 | Iustin Pop | child.stdout.close() |
2079 | a8083063 | Iustin Pop | except EnvironmentError, err: |
2080 | a8083063 | Iustin Pop | output += "Hook script error: %s" % str(err) |
2081 | a8083063 | Iustin Pop | |
2082 | a8083063 | Iustin Pop | while True: |
2083 | a8083063 | Iustin Pop | try:
|
2084 | a8083063 | Iustin Pop | result = child.wait() |
2085 | a8083063 | Iustin Pop | break
|
2086 | a8083063 | Iustin Pop | except EnvironmentError, err: |
2087 | a8083063 | Iustin Pop | if err.errno == errno.EINTR:
|
2088 | a8083063 | Iustin Pop | continue
|
2089 | a8083063 | Iustin Pop | raise
|
2090 | a8083063 | Iustin Pop | finally:
|
2091 | a8083063 | Iustin Pop | # try not to leak fds
|
2092 | a8083063 | Iustin Pop | for fd in (fdstdin, ): |
2093 | a8083063 | Iustin Pop | if fd is not None: |
2094 | a8083063 | Iustin Pop | try:
|
2095 | a8083063 | Iustin Pop | fd.close() |
2096 | a8083063 | Iustin Pop | except EnvironmentError, err: |
2097 | a8083063 | Iustin Pop | # just log the error
|
2098 | 18682bca | Iustin Pop | #logging.exception("Error while closing fd %s", fd)
|
2099 | a8083063 | Iustin Pop | pass
|
2100 | a8083063 | Iustin Pop | |
2101 | a8083063 | Iustin Pop | return result == 0, output |
2102 | a8083063 | Iustin Pop | |
2103 | a8083063 | Iustin Pop | def RunHooks(self, hpath, phase, env): |
2104 | a8083063 | Iustin Pop | """Run the scripts in the hooks directory.
|
2105 | a8083063 | Iustin Pop |
|
2106 | 10c2650b | Iustin Pop | @type hpath: str
|
2107 | 10c2650b | Iustin Pop | @param hpath: the path to the hooks directory which
|
2108 | 10c2650b | Iustin Pop | holds the scripts
|
2109 | 10c2650b | Iustin Pop | @type phase: str
|
2110 | 10c2650b | Iustin Pop | @param phase: either L{constants.HOOKS_PHASE_PRE} or
|
2111 | 10c2650b | Iustin Pop | L{constants.HOOKS_PHASE_POST}
|
2112 | 10c2650b | Iustin Pop | @type env: dict
|
2113 | 10c2650b | Iustin Pop | @param env: dictionary with the environment for the hook
|
2114 | 10c2650b | Iustin Pop | @rtype: list
|
2115 | 10c2650b | Iustin Pop | @return: list of 3-element tuples:
|
2116 | 10c2650b | Iustin Pop | - script path
|
2117 | 10c2650b | Iustin Pop | - script result, either L{constants.HKR_SUCCESS} or
|
2118 | 10c2650b | Iustin Pop | L{constants.HKR_FAIL}
|
2119 | 10c2650b | Iustin Pop | - output of the script
|
2120 | 10c2650b | Iustin Pop |
|
2121 | 10c2650b | Iustin Pop | @raise errors.ProgrammerError: for invalid input
|
2122 | 10c2650b | Iustin Pop | parameters
|
2123 | a8083063 | Iustin Pop |
|
2124 | a8083063 | Iustin Pop | """
|
2125 | a8083063 | Iustin Pop | if phase == constants.HOOKS_PHASE_PRE:
|
2126 | a8083063 | Iustin Pop | suffix = "pre"
|
2127 | a8083063 | Iustin Pop | elif phase == constants.HOOKS_PHASE_POST:
|
2128 | a8083063 | Iustin Pop | suffix = "post"
|
2129 | a8083063 | Iustin Pop | else:
|
2130 | 3ecf6786 | Iustin Pop | raise errors.ProgrammerError("Unknown hooks phase: '%s'" % phase) |
2131 | a8083063 | Iustin Pop | rr = [] |
2132 | a8083063 | Iustin Pop | |
2133 | a8083063 | Iustin Pop | subdir = "%s-%s.d" % (hpath, suffix)
|
2134 | a8083063 | Iustin Pop | dir_name = "%s/%s" % (self._BASE_DIR, subdir) |
2135 | a8083063 | Iustin Pop | try:
|
2136 | eedbda4b | Michael Hanselmann | dir_contents = utils.ListVisibleFiles(dir_name) |
2137 | a8083063 | Iustin Pop | except OSError, err: |
2138 | 10c2650b | Iustin Pop | # FIXME: must log output in case of failures
|
2139 | a8083063 | Iustin Pop | return rr
|
2140 | a8083063 | Iustin Pop | |
2141 | a8083063 | Iustin Pop | # we use the standard python sort order,
|
2142 | a8083063 | Iustin Pop | # so 00name is the recommended naming scheme
|
2143 | a8083063 | Iustin Pop | dir_contents.sort() |
2144 | a8083063 | Iustin Pop | for relname in dir_contents: |
2145 | a8083063 | Iustin Pop | fname = os.path.join(dir_name, relname) |
2146 | a8083063 | Iustin Pop | if not (os.path.isfile(fname) and os.access(fname, os.X_OK) and |
2147 | a8083063 | Iustin Pop | self.RE_MASK.match(relname) is not None): |
2148 | a8083063 | Iustin Pop | rrval = constants.HKR_SKIP |
2149 | a8083063 | Iustin Pop | output = ""
|
2150 | a8083063 | Iustin Pop | else:
|
2151 | a8083063 | Iustin Pop | result, output = self.ExecHook(fname, env)
|
2152 | a8083063 | Iustin Pop | if not result: |
2153 | a8083063 | Iustin Pop | rrval = constants.HKR_FAIL |
2154 | a8083063 | Iustin Pop | else:
|
2155 | a8083063 | Iustin Pop | rrval = constants.HKR_SUCCESS |
2156 | a8083063 | Iustin Pop | rr.append(("%s/%s" % (subdir, relname), rrval, output))
|
2157 | a8083063 | Iustin Pop | |
2158 | a8083063 | Iustin Pop | return rr
|
2159 | 3f78eef2 | Iustin Pop | |
2160 | 3f78eef2 | Iustin Pop | |
2161 | 8d528b7c | Iustin Pop | class IAllocatorRunner(object): |
2162 | 8d528b7c | Iustin Pop | """IAllocator runner.
|
2163 | 8d528b7c | Iustin Pop |
|
2164 | 8d528b7c | Iustin Pop | This class is instantiated on the node side (ganeti-noded) and not on
|
2165 | 8d528b7c | Iustin Pop | the master side.
|
2166 | 8d528b7c | Iustin Pop |
|
2167 | 8d528b7c | Iustin Pop | """
|
2168 | 8d528b7c | Iustin Pop | def Run(self, name, idata): |
2169 | 8d528b7c | Iustin Pop | """Run an iallocator script.
|
2170 | 8d528b7c | Iustin Pop |
|
2171 | 10c2650b | Iustin Pop | @type name: str
|
2172 | 10c2650b | Iustin Pop | @param name: the iallocator script name
|
2173 | 10c2650b | Iustin Pop | @type idata: str
|
2174 | 10c2650b | Iustin Pop | @param idata: the allocator input data
|
2175 | 10c2650b | Iustin Pop |
|
2176 | 10c2650b | Iustin Pop | @rtype: tuple
|
2177 | 10c2650b | Iustin Pop | @return: four element tuple of:
|
2178 | 8d528b7c | Iustin Pop | - run status (one of the IARUN_ constants)
|
2179 | 8d528b7c | Iustin Pop | - stdout
|
2180 | 8d528b7c | Iustin Pop | - stderr
|
2181 | 10c2650b | Iustin Pop | - fail reason (as from L{utils.RunResult})
|
2182 | 8d528b7c | Iustin Pop |
|
2183 | 8d528b7c | Iustin Pop | """
|
2184 | 8d528b7c | Iustin Pop | alloc_script = utils.FindFile(name, constants.IALLOCATOR_SEARCH_PATH, |
2185 | 8d528b7c | Iustin Pop | os.path.isfile) |
2186 | 8d528b7c | Iustin Pop | if alloc_script is None: |
2187 | 8d528b7c | Iustin Pop | return (constants.IARUN_NOTFOUND, None, None, None) |
2188 | 8d528b7c | Iustin Pop | |
2189 | 8d528b7c | Iustin Pop | fd, fin_name = tempfile.mkstemp(prefix="ganeti-iallocator.")
|
2190 | 8d528b7c | Iustin Pop | try:
|
2191 | 8d528b7c | Iustin Pop | os.write(fd, idata) |
2192 | 8d528b7c | Iustin Pop | os.close(fd) |
2193 | 8d528b7c | Iustin Pop | result = utils.RunCmd([alloc_script, fin_name]) |
2194 | 8d528b7c | Iustin Pop | if result.failed:
|
2195 | 8d528b7c | Iustin Pop | return (constants.IARUN_FAILURE, result.stdout, result.stderr,
|
2196 | 8d528b7c | Iustin Pop | result.fail_reason) |
2197 | 8d528b7c | Iustin Pop | finally:
|
2198 | 8d528b7c | Iustin Pop | os.unlink(fin_name) |
2199 | 8d528b7c | Iustin Pop | |
2200 | 8d528b7c | Iustin Pop | return (constants.IARUN_SUCCESS, result.stdout, result.stderr, None) |
2201 | 8d528b7c | Iustin Pop | |
2202 | 8d528b7c | Iustin Pop | |
2203 | 3f78eef2 | Iustin Pop | class DevCacheManager(object): |
2204 | c99a3cc0 | Manuel Franceschini | """Simple class for managing a cache of block device information.
|
2205 | 3f78eef2 | Iustin Pop |
|
2206 | 3f78eef2 | Iustin Pop | """
|
2207 | 3f78eef2 | Iustin Pop | _DEV_PREFIX = "/dev/"
|
2208 | 3f78eef2 | Iustin Pop | _ROOT_DIR = constants.BDEV_CACHE_DIR |
2209 | 3f78eef2 | Iustin Pop | |
2210 | 3f78eef2 | Iustin Pop | @classmethod
|
2211 | 3f78eef2 | Iustin Pop | def _ConvertPath(cls, dev_path): |
2212 | 3f78eef2 | Iustin Pop | """Converts a /dev/name path to the cache file name.
|
2213 | 3f78eef2 | Iustin Pop |
|
2214 | 3f78eef2 | Iustin Pop | This replaces slashes with underscores and strips the /dev
|
2215 | 10c2650b | Iustin Pop | prefix. It then returns the full path to the cache file.
|
2216 | 10c2650b | Iustin Pop |
|
2217 | 10c2650b | Iustin Pop | @type dev_path: str
|
2218 | 10c2650b | Iustin Pop | @param dev_path: the C{/dev/} path name
|
2219 | 10c2650b | Iustin Pop | @rtype: str
|
2220 | 10c2650b | Iustin Pop | @return: the converted path name
|
2221 | 3f78eef2 | Iustin Pop |
|
2222 | 3f78eef2 | Iustin Pop | """
|
2223 | 3f78eef2 | Iustin Pop | if dev_path.startswith(cls._DEV_PREFIX):
|
2224 | 3f78eef2 | Iustin Pop | dev_path = dev_path[len(cls._DEV_PREFIX):]
|
2225 | 3f78eef2 | Iustin Pop | dev_path = dev_path.replace("/", "_") |
2226 | 3f78eef2 | Iustin Pop | fpath = "%s/bdev_%s" % (cls._ROOT_DIR, dev_path)
|
2227 | 3f78eef2 | Iustin Pop | return fpath
|
2228 | 3f78eef2 | Iustin Pop | |
2229 | 3f78eef2 | Iustin Pop | @classmethod
|
2230 | 3f78eef2 | Iustin Pop | def UpdateCache(cls, dev_path, owner, on_primary, iv_name): |
2231 | 3f78eef2 | Iustin Pop | """Updates the cache information for a given device.
|
2232 | 3f78eef2 | Iustin Pop |
|
2233 | 10c2650b | Iustin Pop | @type dev_path: str
|
2234 | 10c2650b | Iustin Pop | @param dev_path: the pathname of the device
|
2235 | 10c2650b | Iustin Pop | @type owner: str
|
2236 | 10c2650b | Iustin Pop | @param owner: the owner (instance name) of the device
|
2237 | 10c2650b | Iustin Pop | @type on_primary: bool
|
2238 | 10c2650b | Iustin Pop | @param on_primary: whether this is the primary
|
2239 | 10c2650b | Iustin Pop | node nor not
|
2240 | 10c2650b | Iustin Pop | @type iv_name: str
|
2241 | 10c2650b | Iustin Pop | @param iv_name: the instance-visible name of the
|
2242 | 10c2650b | Iustin Pop | device, as in L{objects.Disk.iv_name}
|
2243 | 10c2650b | Iustin Pop |
|
2244 | 10c2650b | Iustin Pop | @rtype: None
|
2245 | 10c2650b | Iustin Pop |
|
2246 | 3f78eef2 | Iustin Pop | """
|
2247 | cf5a8306 | Iustin Pop | if dev_path is None: |
2248 | 18682bca | Iustin Pop | logging.error("DevCacheManager.UpdateCache got a None dev_path")
|
2249 | cf5a8306 | Iustin Pop | return
|
2250 | 3f78eef2 | Iustin Pop | fpath = cls._ConvertPath(dev_path) |
2251 | 3f78eef2 | Iustin Pop | if on_primary:
|
2252 | 3f78eef2 | Iustin Pop | state = "primary"
|
2253 | 3f78eef2 | Iustin Pop | else:
|
2254 | 3f78eef2 | Iustin Pop | state = "secondary"
|
2255 | 3f78eef2 | Iustin Pop | if iv_name is None: |
2256 | 3f78eef2 | Iustin Pop | iv_name = "not_visible"
|
2257 | 3f78eef2 | Iustin Pop | fdata = "%s %s %s\n" % (str(owner), state, iv_name) |
2258 | 3f78eef2 | Iustin Pop | try:
|
2259 | 3f78eef2 | Iustin Pop | utils.WriteFile(fpath, data=fdata) |
2260 | 3f78eef2 | Iustin Pop | except EnvironmentError, err: |
2261 | 18682bca | Iustin Pop | logging.exception("Can't update bdev cache for %s", dev_path)
|
2262 | 3f78eef2 | Iustin Pop | |
2263 | 3f78eef2 | Iustin Pop | @classmethod
|
2264 | 3f78eef2 | Iustin Pop | def RemoveCache(cls, dev_path): |
2265 | 3f78eef2 | Iustin Pop | """Remove data for a dev_path.
|
2266 | 3f78eef2 | Iustin Pop |
|
2267 | 10c2650b | Iustin Pop | This is just a wrapper over L{utils.RemoveFile} with a converted
|
2268 | 10c2650b | Iustin Pop | path name and logging.
|
2269 | 10c2650b | Iustin Pop |
|
2270 | 10c2650b | Iustin Pop | @type dev_path: str
|
2271 | 10c2650b | Iustin Pop | @param dev_path: the pathname of the device
|
2272 | 10c2650b | Iustin Pop |
|
2273 | 10c2650b | Iustin Pop | @rtype: None
|
2274 | 10c2650b | Iustin Pop |
|
2275 | 3f78eef2 | Iustin Pop | """
|
2276 | cf5a8306 | Iustin Pop | if dev_path is None: |
2277 | 18682bca | Iustin Pop | logging.error("DevCacheManager.RemoveCache got a None dev_path")
|
2278 | cf5a8306 | Iustin Pop | return
|
2279 | 3f78eef2 | Iustin Pop | fpath = cls._ConvertPath(dev_path) |
2280 | 3f78eef2 | Iustin Pop | try:
|
2281 | 3f78eef2 | Iustin Pop | utils.RemoveFile(fpath) |
2282 | 3f78eef2 | Iustin Pop | except EnvironmentError, err: |
2283 | 18682bca | Iustin Pop | logging.exception("Can't update bdev cache for %s", dev_path) |