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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 | 12bce260 | Michael Hanselmann | import zlib |
37 | 12bce260 | Michael Hanselmann | import base64 |
38 | a8083063 | Iustin Pop | |
39 | a8083063 | Iustin Pop | from ganeti import errors |
40 | a8083063 | Iustin Pop | from ganeti import utils |
41 | a8083063 | Iustin Pop | from ganeti import ssh |
42 | a8083063 | Iustin Pop | from ganeti import hypervisor |
43 | a8083063 | Iustin Pop | from ganeti import constants |
44 | a8083063 | Iustin Pop | from ganeti import bdev |
45 | a8083063 | Iustin Pop | from ganeti import objects |
46 | 880478f8 | Iustin Pop | from ganeti import ssconf |
47 | a8083063 | Iustin Pop | |
48 | a8083063 | Iustin Pop | |
49 | c657dcc9 | Michael Hanselmann | def _GetConfig(): |
50 | 93384844 | Iustin Pop | """Simple wrapper to return a SimpleStore.
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51 | 10c2650b | Iustin Pop |
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52 | 93384844 | Iustin Pop | @rtype: L{ssconf.SimpleStore}
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53 | 93384844 | Iustin Pop | @return: a SimpleStore instance
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54 | 10c2650b | Iustin Pop |
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55 | 10c2650b | Iustin Pop | """
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56 | 93384844 | Iustin Pop | return ssconf.SimpleStore()
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57 | c657dcc9 | Michael Hanselmann | |
58 | c657dcc9 | Michael Hanselmann | |
59 | 62c9ec92 | Iustin Pop | def _GetSshRunner(cluster_name): |
60 | 10c2650b | Iustin Pop | """Simple wrapper to return an SshRunner.
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61 | 10c2650b | Iustin Pop |
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62 | 10c2650b | Iustin Pop | @type cluster_name: str
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63 | 10c2650b | Iustin Pop | @param cluster_name: the cluster name, which is needed
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64 | 10c2650b | Iustin Pop | by the SshRunner constructor
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65 | 10c2650b | Iustin Pop | @rtype: L{ssh.SshRunner}
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66 | 10c2650b | Iustin Pop | @return: an SshRunner instance
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67 | 10c2650b | Iustin Pop |
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68 | 10c2650b | Iustin Pop | """
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69 | 62c9ec92 | Iustin Pop | return ssh.SshRunner(cluster_name)
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70 | c92b310a | Michael Hanselmann | |
71 | c92b310a | Michael Hanselmann | |
72 | 12bce260 | Michael Hanselmann | def _Decompress(data): |
73 | 12bce260 | Michael Hanselmann | """Unpacks data compressed by the RPC client.
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74 | 12bce260 | Michael Hanselmann |
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75 | 12bce260 | Michael Hanselmann | @type data: list or tuple
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76 | 12bce260 | Michael Hanselmann | @param data: Data sent by RPC client
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77 | 12bce260 | Michael Hanselmann | @rtype: str
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78 | 12bce260 | Michael Hanselmann | @return: Decompressed data
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79 | 12bce260 | Michael Hanselmann |
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80 | 12bce260 | Michael Hanselmann | """
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81 | 52e2f66e | Michael Hanselmann | assert isinstance(data, (list, tuple)) |
82 | 12bce260 | Michael Hanselmann | assert len(data) == 2 |
83 | 12bce260 | Michael Hanselmann | (encoding, content) = data |
84 | 12bce260 | Michael Hanselmann | if encoding == constants.RPC_ENCODING_NONE:
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85 | 12bce260 | Michael Hanselmann | return content
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86 | 12bce260 | Michael Hanselmann | elif encoding == constants.RPC_ENCODING_ZLIB_BASE64:
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87 | 12bce260 | Michael Hanselmann | return zlib.decompress(base64.b64decode(content))
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88 | 12bce260 | Michael Hanselmann | else:
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89 | 12bce260 | Michael Hanselmann | raise AssertionError("Unknown data encoding") |
90 | 12bce260 | Michael Hanselmann | |
91 | 12bce260 | Michael Hanselmann | |
92 | 3bc6be5c | Iustin Pop | def _CleanDirectory(path, exclude=None): |
93 | 76ab5558 | Michael Hanselmann | """Removes all regular files in a directory.
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94 | 76ab5558 | Michael Hanselmann |
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95 | 10c2650b | Iustin Pop | @type path: str
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96 | 10c2650b | Iustin Pop | @param path: the directory to clean
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97 | 76ab5558 | Michael Hanselmann | @type exclude: list
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98 | 10c2650b | Iustin Pop | @param exclude: list of files to be excluded, defaults
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99 | 10c2650b | Iustin Pop | to the empty list
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100 | 76ab5558 | Michael Hanselmann |
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101 | 76ab5558 | Michael Hanselmann | """
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102 | 3956cee1 | Michael Hanselmann | if not os.path.isdir(path): |
103 | 3956cee1 | Michael Hanselmann | return
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104 | 3bc6be5c | Iustin Pop | if exclude is None: |
105 | 3bc6be5c | Iustin Pop | exclude = [] |
106 | 3bc6be5c | Iustin Pop | else:
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107 | 3bc6be5c | Iustin Pop | # Normalize excluded paths
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108 | 3bc6be5c | Iustin Pop | exclude = [os.path.normpath(i) for i in exclude] |
109 | 76ab5558 | Michael Hanselmann | |
110 | 3956cee1 | Michael Hanselmann | for rel_name in utils.ListVisibleFiles(path): |
111 | 76ab5558 | Michael Hanselmann | full_name = os.path.normpath(os.path.join(path, rel_name)) |
112 | 76ab5558 | Michael Hanselmann | if full_name in exclude: |
113 | 76ab5558 | Michael Hanselmann | continue
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114 | 3956cee1 | Michael Hanselmann | if os.path.isfile(full_name) and not os.path.islink(full_name): |
115 | 3956cee1 | Michael Hanselmann | utils.RemoveFile(full_name) |
116 | 3956cee1 | Michael Hanselmann | |
117 | 3956cee1 | Michael Hanselmann | |
118 | 1bc59f76 | Michael Hanselmann | def JobQueuePurge(): |
119 | 10c2650b | Iustin Pop | """Removes job queue files and archived jobs.
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120 | 10c2650b | Iustin Pop |
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121 | 10c2650b | Iustin Pop | @rtype: None
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122 | 24fc781f | Michael Hanselmann |
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123 | 24fc781f | Michael Hanselmann | """
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124 | 1bc59f76 | Michael Hanselmann | _CleanDirectory(constants.QUEUE_DIR, exclude=[constants.JOB_QUEUE_LOCK_FILE]) |
125 | 24fc781f | Michael Hanselmann | _CleanDirectory(constants.JOB_QUEUE_ARCHIVE_DIR) |
126 | 24fc781f | Michael Hanselmann | |
127 | 24fc781f | Michael Hanselmann | |
128 | bd1e4562 | Iustin Pop | def GetMasterInfo(): |
129 | bd1e4562 | Iustin Pop | """Returns master information.
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130 | bd1e4562 | Iustin Pop |
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131 | bd1e4562 | Iustin Pop | This is an utility function to compute master information, either
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132 | bd1e4562 | Iustin Pop | for consumption here or from the node daemon.
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133 | bd1e4562 | Iustin Pop |
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134 | bd1e4562 | Iustin Pop | @rtype: tuple
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135 | 10c2650b | Iustin Pop | @return: (master_netdev, master_ip, master_name) if we have a good
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136 | 10c2650b | Iustin Pop | configuration, otherwise (None, None, None)
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137 | b1b6ea87 | Iustin Pop |
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138 | b1b6ea87 | Iustin Pop | """
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139 | b1b6ea87 | Iustin Pop | try:
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140 | c657dcc9 | Michael Hanselmann | cfg = _GetConfig() |
141 | c657dcc9 | Michael Hanselmann | master_netdev = cfg.GetMasterNetdev() |
142 | c657dcc9 | Michael Hanselmann | master_ip = cfg.GetMasterIP() |
143 | c657dcc9 | Michael Hanselmann | master_node = cfg.GetMasterNode() |
144 | b1b6ea87 | Iustin Pop | except errors.ConfigurationError, err:
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145 | b1b6ea87 | Iustin Pop | logging.exception("Cluster configuration incomplete")
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146 | 0a70a72a | Iustin Pop | return (None, None, None) |
147 | bd1e4562 | Iustin Pop | return (master_netdev, master_ip, master_node)
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148 | b1b6ea87 | Iustin Pop | |
149 | b1b6ea87 | Iustin Pop | |
150 | 1c65840b | Iustin Pop | def StartMaster(start_daemons): |
151 | a8083063 | Iustin Pop | """Activate local node as master node.
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152 | a8083063 | Iustin Pop |
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153 | 1c65840b | Iustin Pop | The function will always try activate the IP address of the master
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154 | 10c2650b | Iustin Pop | (unless someone else has it). It will also start the master daemons,
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155 | 10c2650b | Iustin Pop | based on the start_daemons parameter.
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156 | 10c2650b | Iustin Pop |
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157 | 10c2650b | Iustin Pop | @type start_daemons: boolean
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158 | 10c2650b | Iustin Pop | @param start_daemons: whther to also start the master
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159 | 10c2650b | Iustin Pop | daemons (ganeti-masterd and ganeti-rapi)
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160 | 10c2650b | Iustin Pop | @rtype: None
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161 | a8083063 | Iustin Pop |
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162 | a8083063 | Iustin Pop | """
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163 | b1b6ea87 | Iustin Pop | ok = True
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164 | bd1e4562 | Iustin Pop | master_netdev, master_ip, _ = GetMasterInfo() |
165 | b1b6ea87 | Iustin Pop | if not master_netdev: |
166 | a8083063 | Iustin Pop | return False |
167 | a8083063 | Iustin Pop | |
168 | b1b6ea87 | Iustin Pop | if utils.TcpPing(master_ip, constants.DEFAULT_NODED_PORT):
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169 | caad16e2 | Iustin Pop | if utils.OwnIpAddress(master_ip):
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170 | b1b6ea87 | Iustin Pop | # we already have the ip:
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171 | b1b6ea87 | Iustin Pop | logging.debug("Already started")
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172 | b1b6ea87 | Iustin Pop | else:
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173 | b1b6ea87 | Iustin Pop | logging.error("Someone else has the master ip, not activating")
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174 | b1b6ea87 | Iustin Pop | ok = False
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175 | b1b6ea87 | Iustin Pop | else:
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176 | b1b6ea87 | Iustin Pop | result = utils.RunCmd(["ip", "address", "add", "%s/32" % master_ip, |
177 | b1b6ea87 | Iustin Pop | "dev", master_netdev, "label", |
178 | b1b6ea87 | Iustin Pop | "%s:0" % master_netdev])
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179 | b1b6ea87 | Iustin Pop | if result.failed:
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180 | b1b6ea87 | Iustin Pop | logging.error("Can't activate master IP: %s", result.output)
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181 | b1b6ea87 | Iustin Pop | ok = False
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182 | b1b6ea87 | Iustin Pop | |
183 | b1b6ea87 | Iustin Pop | result = utils.RunCmd(["arping", "-q", "-U", "-c 3", "-I", master_netdev, |
184 | b1b6ea87 | Iustin Pop | "-s", master_ip, master_ip])
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185 | b1b6ea87 | Iustin Pop | # we'll ignore the exit code of arping
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186 | b1b6ea87 | Iustin Pop | |
187 | b1b6ea87 | Iustin Pop | # and now start the master and rapi daemons
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188 | b1b6ea87 | Iustin Pop | if start_daemons:
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189 | b1b6ea87 | Iustin Pop | for daemon in 'ganeti-masterd', 'ganeti-rapi': |
190 | b1b6ea87 | Iustin Pop | result = utils.RunCmd([daemon]) |
191 | b1b6ea87 | Iustin Pop | if result.failed:
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192 | b1b6ea87 | Iustin Pop | logging.error("Can't start daemon %s: %s", daemon, result.output)
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193 | b1b6ea87 | Iustin Pop | ok = False
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194 | b1b6ea87 | Iustin Pop | return ok
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195 | a8083063 | Iustin Pop | |
196 | a8083063 | Iustin Pop | |
197 | 1c65840b | Iustin Pop | def StopMaster(stop_daemons): |
198 | a8083063 | Iustin Pop | """Deactivate this node as master.
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199 | a8083063 | Iustin Pop |
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200 | 1c65840b | Iustin Pop | The function will always try to deactivate the IP address of the
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201 | 10c2650b | Iustin Pop | master. It will also stop the master daemons depending on the
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202 | 10c2650b | Iustin Pop | stop_daemons parameter.
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203 | 10c2650b | Iustin Pop |
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204 | 10c2650b | Iustin Pop | @type stop_daemons: boolean
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205 | 10c2650b | Iustin Pop | @param stop_daemons: whether to also stop the master daemons
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206 | 10c2650b | Iustin Pop | (ganeti-masterd and ganeti-rapi)
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207 | 10c2650b | Iustin Pop | @rtype: None
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208 | a8083063 | Iustin Pop |
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209 | a8083063 | Iustin Pop | """
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210 | bd1e4562 | Iustin Pop | master_netdev, master_ip, _ = GetMasterInfo() |
211 | b1b6ea87 | Iustin Pop | if not master_netdev: |
212 | b1b6ea87 | Iustin Pop | return False |
213 | a8083063 | Iustin Pop | |
214 | b1b6ea87 | Iustin Pop | result = utils.RunCmd(["ip", "address", "del", "%s/32" % master_ip, |
215 | b1b6ea87 | Iustin Pop | "dev", master_netdev])
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216 | a8083063 | Iustin Pop | if result.failed:
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217 | 3b9e6a30 | Iustin Pop | logging.error("Can't remove the master IP, error: %s", result.output)
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218 | b1b6ea87 | Iustin Pop | # but otherwise ignore the failure
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219 | b1b6ea87 | Iustin Pop | |
220 | b1b6ea87 | Iustin Pop | if stop_daemons:
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221 | b1b6ea87 | Iustin Pop | # stop/kill the rapi and the master daemon
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222 | b1b6ea87 | Iustin Pop | for daemon in constants.RAPI_PID, constants.MASTERD_PID: |
223 | b1b6ea87 | Iustin Pop | utils.KillProcess(utils.ReadPidFile(utils.DaemonPidFileName(daemon))) |
224 | a8083063 | Iustin Pop | |
225 | a8083063 | Iustin Pop | return True |
226 | a8083063 | Iustin Pop | |
227 | a8083063 | Iustin Pop | |
228 | 9716fdce | Iustin Pop | def AddNode(dsa, dsapub, rsa, rsapub, sshkey, sshpub): |
229 | 7900ed01 | Iustin Pop | """Joins this node to the cluster.
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230 | a8083063 | Iustin Pop |
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231 | 7900ed01 | Iustin Pop | This does the following:
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232 | 7900ed01 | Iustin Pop | - updates the hostkeys of the machine (rsa and dsa)
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233 | 7900ed01 | Iustin Pop | - adds the ssh private key to the user
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234 | 7900ed01 | Iustin Pop | - adds the ssh public key to the users' authorized_keys file
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235 | a8083063 | Iustin Pop |
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236 | 10c2650b | Iustin Pop | @type dsa: str
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237 | 10c2650b | Iustin Pop | @param dsa: the DSA private key to write
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238 | 10c2650b | Iustin Pop | @type dsapub: str
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239 | 10c2650b | Iustin Pop | @param dsapub: the DSA public key to write
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240 | 10c2650b | Iustin Pop | @type rsa: str
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241 | 10c2650b | Iustin Pop | @param rsa: the RSA private key to write
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242 | 10c2650b | Iustin Pop | @type rsapub: str
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243 | 10c2650b | Iustin Pop | @param rsapub: the RSA public key to write
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244 | 10c2650b | Iustin Pop | @type sshkey: str
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245 | 10c2650b | Iustin Pop | @param sshkey: the SSH private key to write
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246 | 10c2650b | Iustin Pop | @type sshpub: str
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247 | 10c2650b | Iustin Pop | @param sshpub: the SSH public key to write
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248 | 10c2650b | Iustin Pop | @rtype: boolean
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249 | 10c2650b | Iustin Pop | @return: the success of the operation
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250 | 10c2650b | Iustin Pop |
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251 | 7900ed01 | Iustin Pop | """
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252 | 70d9e3d8 | Iustin Pop | sshd_keys = [(constants.SSH_HOST_RSA_PRIV, rsa, 0600),
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253 | 70d9e3d8 | Iustin Pop | (constants.SSH_HOST_RSA_PUB, rsapub, 0644),
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254 | 70d9e3d8 | Iustin Pop | (constants.SSH_HOST_DSA_PRIV, dsa, 0600),
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255 | 70d9e3d8 | Iustin Pop | (constants.SSH_HOST_DSA_PUB, dsapub, 0644)]
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256 | 7900ed01 | Iustin Pop | for name, content, mode in sshd_keys: |
257 | 70d9e3d8 | Iustin Pop | utils.WriteFile(name, data=content, mode=mode) |
258 | a8083063 | Iustin Pop | |
259 | 70d9e3d8 | Iustin Pop | try:
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260 | 70d9e3d8 | Iustin Pop | priv_key, pub_key, auth_keys = ssh.GetUserFiles(constants.GANETI_RUNAS, |
261 | 70d9e3d8 | Iustin Pop | mkdir=True)
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262 | 70d9e3d8 | Iustin Pop | except errors.OpExecError, err:
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263 | 18682bca | Iustin Pop | logging.exception("Error while processing user ssh files")
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264 | 70d9e3d8 | Iustin Pop | return False |
265 | a8083063 | Iustin Pop | |
266 | 70d9e3d8 | Iustin Pop | for name, content in [(priv_key, sshkey), (pub_key, sshpub)]: |
267 | 70d9e3d8 | Iustin Pop | utils.WriteFile(name, data=content, mode=0600)
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268 | a8083063 | Iustin Pop | |
269 | 70d9e3d8 | Iustin Pop | utils.AddAuthorizedKey(auth_keys, sshpub) |
270 | a8083063 | Iustin Pop | |
271 | f491c3a8 | Michael Hanselmann | utils.RunCmd([constants.SSH_INITD_SCRIPT, "restart"])
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272 | a8083063 | Iustin Pop | |
273 | a8083063 | Iustin Pop | return True |
274 | a8083063 | Iustin Pop | |
275 | a8083063 | Iustin Pop | |
276 | a8083063 | Iustin Pop | def LeaveCluster(): |
277 | 10c2650b | Iustin Pop | """Cleans up and remove the current node.
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278 | 10c2650b | Iustin Pop |
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279 | 10c2650b | Iustin Pop | This function cleans up and prepares the current node to be removed
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280 | 10c2650b | Iustin Pop | from the cluster.
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281 | 10c2650b | Iustin Pop |
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282 | 10c2650b | Iustin Pop | If processing is successful, then it raises an
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283 | c41eea6e | Iustin Pop | L{errors.QuitGanetiException} which is used as a special case to
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284 | 10c2650b | Iustin Pop | shutdown the node daemon.
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285 | a8083063 | Iustin Pop |
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286 | a8083063 | Iustin Pop | """
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287 | f78346f5 | Michael Hanselmann | _CleanDirectory(constants.DATA_DIR) |
288 | 1bc59f76 | Michael Hanselmann | JobQueuePurge() |
289 | f78346f5 | Michael Hanselmann | |
290 | 70d9e3d8 | Iustin Pop | try:
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291 | 70d9e3d8 | Iustin Pop | priv_key, pub_key, auth_keys = ssh.GetUserFiles(constants.GANETI_RUNAS) |
292 | 18682bca | Iustin Pop | except errors.OpExecError:
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293 | 18682bca | Iustin Pop | logging.exception("Error while processing ssh files")
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294 | 7900ed01 | Iustin Pop | return
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295 | 7900ed01 | Iustin Pop | |
296 | 70d9e3d8 | Iustin Pop | f = open(pub_key, 'r') |
297 | a8083063 | Iustin Pop | try:
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298 | 70d9e3d8 | Iustin Pop | utils.RemoveAuthorizedKey(auth_keys, f.read(8192))
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299 | a8083063 | Iustin Pop | finally:
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300 | a8083063 | Iustin Pop | f.close() |
301 | a8083063 | Iustin Pop | |
302 | 70d9e3d8 | Iustin Pop | utils.RemoveFile(priv_key) |
303 | 70d9e3d8 | Iustin Pop | utils.RemoveFile(pub_key) |
304 | a8083063 | Iustin Pop | |
305 | 6d8b6238 | Guido Trotter | # Return a reassuring string to the caller, and quit
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306 | 6d8b6238 | Guido Trotter | raise errors.QuitGanetiException(False, 'Shutdown scheduled') |
307 | 6d8b6238 | Guido Trotter | |
308 | a8083063 | Iustin Pop | |
309 | e69d05fd | Iustin Pop | def GetNodeInfo(vgname, hypervisor_type): |
310 | 2f8598a5 | Alexander Schreiber | """Gives back a hash with different informations about the node.
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311 | a8083063 | Iustin Pop |
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312 | e69d05fd | Iustin Pop | @type vgname: C{string}
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313 | e69d05fd | Iustin Pop | @param vgname: the name of the volume group to ask for disk space information
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314 | e69d05fd | Iustin Pop | @type hypervisor_type: C{str}
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315 | e69d05fd | Iustin Pop | @param hypervisor_type: the name of the hypervisor to ask for
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316 | e69d05fd | Iustin Pop | memory information
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317 | e69d05fd | Iustin Pop | @rtype: C{dict}
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318 | e69d05fd | Iustin Pop | @return: dictionary with the following keys:
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319 | e69d05fd | Iustin Pop | - vg_size is the size of the configured volume group in MiB
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320 | e69d05fd | Iustin Pop | - vg_free is the free size of the volume group in MiB
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321 | e69d05fd | Iustin Pop | - memory_dom0 is the memory allocated for domain0 in MiB
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322 | e69d05fd | Iustin Pop | - memory_free is the currently available (free) ram in MiB
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323 | e69d05fd | Iustin Pop | - memory_total is the total number of ram in MiB
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324 | a8083063 | Iustin Pop |
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325 | 098c0958 | Michael Hanselmann | """
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326 | a8083063 | Iustin Pop | outputarray = {} |
327 | a8083063 | Iustin Pop | vginfo = _GetVGInfo(vgname) |
328 | a8083063 | Iustin Pop | outputarray['vg_size'] = vginfo['vg_size'] |
329 | a8083063 | Iustin Pop | outputarray['vg_free'] = vginfo['vg_free'] |
330 | a8083063 | Iustin Pop | |
331 | e69d05fd | Iustin Pop | hyper = hypervisor.GetHypervisor(hypervisor_type) |
332 | a8083063 | Iustin Pop | hyp_info = hyper.GetNodeInfo() |
333 | a8083063 | Iustin Pop | if hyp_info is not None: |
334 | a8083063 | Iustin Pop | outputarray.update(hyp_info) |
335 | a8083063 | Iustin Pop | |
336 | 3ef10550 | Michael Hanselmann | f = open("/proc/sys/kernel/random/boot_id", 'r') |
337 | 3ef10550 | Michael Hanselmann | try:
|
338 | 3ef10550 | Michael Hanselmann | outputarray["bootid"] = f.read(128).rstrip("\n") |
339 | 3ef10550 | Michael Hanselmann | finally:
|
340 | 3ef10550 | Michael Hanselmann | f.close() |
341 | 3ef10550 | Michael Hanselmann | |
342 | a8083063 | Iustin Pop | return outputarray
|
343 | a8083063 | Iustin Pop | |
344 | a8083063 | Iustin Pop | |
345 | 62c9ec92 | Iustin Pop | def VerifyNode(what, cluster_name): |
346 | a8083063 | Iustin Pop | """Verify the status of the local node.
|
347 | a8083063 | Iustin Pop |
|
348 | e69d05fd | Iustin Pop | Based on the input L{what} parameter, various checks are done on the
|
349 | e69d05fd | Iustin Pop | local node.
|
350 | e69d05fd | Iustin Pop |
|
351 | e69d05fd | Iustin Pop | If the I{filelist} key is present, this list of
|
352 | e69d05fd | Iustin Pop | files is checksummed and the file/checksum pairs are returned.
|
353 | e69d05fd | Iustin Pop |
|
354 | e69d05fd | Iustin Pop | If the I{nodelist} key is present, we check that we have
|
355 | e69d05fd | Iustin Pop | connectivity via ssh with the target nodes (and check the hostname
|
356 | e69d05fd | Iustin Pop | report).
|
357 | a8083063 | Iustin Pop |
|
358 | e69d05fd | Iustin Pop | If the I{node-net-test} key is present, we check that we have
|
359 | e69d05fd | Iustin Pop | connectivity to the given nodes via both primary IP and, if
|
360 | e69d05fd | Iustin Pop | applicable, secondary IPs.
|
361 | e69d05fd | Iustin Pop |
|
362 | e69d05fd | Iustin Pop | @type what: C{dict}
|
363 | e69d05fd | Iustin Pop | @param what: a dictionary of things to check:
|
364 | e69d05fd | Iustin Pop | - filelist: list of files for which to compute checksums
|
365 | e69d05fd | Iustin Pop | - nodelist: list of nodes we should check ssh communication with
|
366 | e69d05fd | Iustin Pop | - node-net-test: list of nodes we should check node daemon port
|
367 | e69d05fd | Iustin Pop | connectivity with
|
368 | e69d05fd | Iustin Pop | - hypervisor: list with hypervisors to run the verify for
|
369 | 10c2650b | Iustin Pop | @rtype: dict
|
370 | 10c2650b | Iustin Pop | @return: a dictionary with the same keys as the input dict, and
|
371 | 10c2650b | Iustin Pop | values representing the result of the checks
|
372 | a8083063 | Iustin Pop |
|
373 | a8083063 | Iustin Pop | """
|
374 | a8083063 | Iustin Pop | result = {} |
375 | a8083063 | Iustin Pop | |
376 | 25361b9a | Iustin Pop | if constants.NV_HYPERVISOR in what: |
377 | 25361b9a | Iustin Pop | result[constants.NV_HYPERVISOR] = tmp = {} |
378 | 25361b9a | Iustin Pop | for hv_name in what[constants.NV_HYPERVISOR]: |
379 | 25361b9a | Iustin Pop | tmp[hv_name] = hypervisor.GetHypervisor(hv_name).Verify() |
380 | 25361b9a | Iustin Pop | |
381 | 25361b9a | Iustin Pop | if constants.NV_FILELIST in what: |
382 | 25361b9a | Iustin Pop | result[constants.NV_FILELIST] = utils.FingerprintFiles( |
383 | 25361b9a | Iustin Pop | what[constants.NV_FILELIST]) |
384 | 25361b9a | Iustin Pop | |
385 | 25361b9a | Iustin Pop | if constants.NV_NODELIST in what: |
386 | 25361b9a | Iustin Pop | result[constants.NV_NODELIST] = tmp = {} |
387 | 25361b9a | Iustin Pop | random.shuffle(what[constants.NV_NODELIST]) |
388 | 25361b9a | Iustin Pop | for node in what[constants.NV_NODELIST]: |
389 | 62c9ec92 | Iustin Pop | success, message = _GetSshRunner(cluster_name).VerifyNodeHostname(node) |
390 | a8083063 | Iustin Pop | if not success: |
391 | 25361b9a | Iustin Pop | tmp[node] = message |
392 | 25361b9a | Iustin Pop | |
393 | 25361b9a | Iustin Pop | if constants.NV_NODENETTEST in what: |
394 | 25361b9a | Iustin Pop | result[constants.NV_NODENETTEST] = tmp = {} |
395 | 9d4bfc96 | Iustin Pop | my_name = utils.HostInfo().name |
396 | 9d4bfc96 | Iustin Pop | my_pip = my_sip = None
|
397 | 25361b9a | Iustin Pop | for name, pip, sip in what[constants.NV_NODENETTEST]: |
398 | 9d4bfc96 | Iustin Pop | if name == my_name:
|
399 | 9d4bfc96 | Iustin Pop | my_pip = pip |
400 | 9d4bfc96 | Iustin Pop | my_sip = sip |
401 | 9d4bfc96 | Iustin Pop | break
|
402 | 9d4bfc96 | Iustin Pop | if not my_pip: |
403 | 25361b9a | Iustin Pop | tmp[my_name] = ("Can't find my own primary/secondary IP"
|
404 | 25361b9a | Iustin Pop | " in the node list")
|
405 | 9d4bfc96 | Iustin Pop | else:
|
406 | c657dcc9 | Michael Hanselmann | port = utils.GetNodeDaemonPort() |
407 | 25361b9a | Iustin Pop | for name, pip, sip in what[constants.NV_NODENETTEST]: |
408 | 9d4bfc96 | Iustin Pop | fail = [] |
409 | 9d4bfc96 | Iustin Pop | if not utils.TcpPing(pip, port, source=my_pip): |
410 | 9d4bfc96 | Iustin Pop | fail.append("primary")
|
411 | 9d4bfc96 | Iustin Pop | if sip != pip:
|
412 | 9d4bfc96 | Iustin Pop | if not utils.TcpPing(sip, port, source=my_sip): |
413 | 9d4bfc96 | Iustin Pop | fail.append("secondary")
|
414 | 9d4bfc96 | Iustin Pop | if fail:
|
415 | 25361b9a | Iustin Pop | tmp[name] = ("failure using the %s interface(s)" %
|
416 | 25361b9a | Iustin Pop | " and ".join(fail))
|
417 | 25361b9a | Iustin Pop | |
418 | 25361b9a | Iustin Pop | if constants.NV_LVLIST in what: |
419 | 25361b9a | Iustin Pop | result[constants.NV_LVLIST] = GetVolumeList(what[constants.NV_LVLIST]) |
420 | 25361b9a | Iustin Pop | |
421 | 25361b9a | Iustin Pop | if constants.NV_INSTANCELIST in what: |
422 | 25361b9a | Iustin Pop | result[constants.NV_INSTANCELIST] = GetInstanceList( |
423 | 25361b9a | Iustin Pop | what[constants.NV_INSTANCELIST]) |
424 | 25361b9a | Iustin Pop | |
425 | 25361b9a | Iustin Pop | if constants.NV_VGLIST in what: |
426 | 25361b9a | Iustin Pop | result[constants.NV_VGLIST] = ListVolumeGroups() |
427 | 25361b9a | Iustin Pop | |
428 | 25361b9a | Iustin Pop | if constants.NV_VERSION in what: |
429 | 25361b9a | Iustin Pop | result[constants.NV_VERSION] = constants.PROTOCOL_VERSION |
430 | 25361b9a | Iustin Pop | |
431 | 25361b9a | Iustin Pop | if constants.NV_HVINFO in what: |
432 | 25361b9a | Iustin Pop | hyper = hypervisor.GetHypervisor(what[constants.NV_HVINFO]) |
433 | 25361b9a | Iustin Pop | result[constants.NV_HVINFO] = hyper.GetNodeInfo() |
434 | 9d4bfc96 | Iustin Pop | |
435 | a8083063 | Iustin Pop | return result
|
436 | a8083063 | Iustin Pop | |
437 | a8083063 | Iustin Pop | |
438 | a8083063 | Iustin Pop | def GetVolumeList(vg_name): |
439 | a8083063 | Iustin Pop | """Compute list of logical volumes and their size.
|
440 | a8083063 | Iustin Pop |
|
441 | 10c2650b | Iustin Pop | @type vg_name: str
|
442 | 10c2650b | Iustin Pop | @param vg_name: the volume group whose LVs we should list
|
443 | 10c2650b | Iustin Pop | @rtype: dict
|
444 | 10c2650b | Iustin Pop | @return:
|
445 | 10c2650b | Iustin Pop | dictionary of all partions (key) with value being a tuple of
|
446 | 10c2650b | Iustin Pop | their size (in MiB), inactive and online status::
|
447 | 10c2650b | Iustin Pop |
|
448 | 10c2650b | Iustin Pop | {'test1': ('20.06', True, True)}
|
449 | 10c2650b | Iustin Pop |
|
450 | 10c2650b | Iustin Pop | in case of errors, a string is returned with the error
|
451 | 10c2650b | Iustin Pop | details.
|
452 | a8083063 | Iustin Pop |
|
453 | a8083063 | Iustin Pop | """
|
454 | cb2037a2 | Iustin Pop | lvs = {} |
455 | cb2037a2 | Iustin Pop | sep = '|'
|
456 | cb2037a2 | Iustin Pop | result = utils.RunCmd(["lvs", "--noheadings", "--units=m", "--nosuffix", |
457 | cb2037a2 | Iustin Pop | "--separator=%s" % sep,
|
458 | cb2037a2 | Iustin Pop | "-olv_name,lv_size,lv_attr", vg_name])
|
459 | a8083063 | Iustin Pop | if result.failed:
|
460 | 18682bca | Iustin Pop | logging.error("Failed to list logical volumes, lvs output: %s",
|
461 | 18682bca | Iustin Pop | result.output) |
462 | b63ed789 | Iustin Pop | return result.output
|
463 | cb2037a2 | Iustin Pop | |
464 | df4c2628 | Iustin Pop | valid_line_re = re.compile("^ *([^|]+)\|([0-9.]+)\|([^|]{6})\|?$")
|
465 | cb2037a2 | Iustin Pop | for line in result.stdout.splitlines(): |
466 | df4c2628 | Iustin Pop | line = line.strip() |
467 | df4c2628 | Iustin Pop | match = valid_line_re.match(line) |
468 | df4c2628 | Iustin Pop | if not match: |
469 | 18682bca | Iustin Pop | logging.error("Invalid line returned from lvs output: '%s'", line)
|
470 | df4c2628 | Iustin Pop | continue
|
471 | df4c2628 | Iustin Pop | name, size, attr = match.groups() |
472 | cb2037a2 | Iustin Pop | inactive = attr[4] == '-' |
473 | cb2037a2 | Iustin Pop | online = attr[5] == 'o' |
474 | cb2037a2 | Iustin Pop | lvs[name] = (size, inactive, online) |
475 | cb2037a2 | Iustin Pop | |
476 | cb2037a2 | Iustin Pop | return lvs
|
477 | a8083063 | Iustin Pop | |
478 | a8083063 | Iustin Pop | |
479 | a8083063 | Iustin Pop | def ListVolumeGroups(): |
480 | 2f8598a5 | Alexander Schreiber | """List the volume groups and their size.
|
481 | a8083063 | Iustin Pop |
|
482 | 10c2650b | Iustin Pop | @rtype: dict
|
483 | 10c2650b | Iustin Pop | @return: dictionary with keys volume name and values the
|
484 | 10c2650b | Iustin Pop | size of the volume
|
485 | a8083063 | Iustin Pop |
|
486 | a8083063 | Iustin Pop | """
|
487 | a8083063 | Iustin Pop | return utils.ListVolumeGroups()
|
488 | a8083063 | Iustin Pop | |
489 | a8083063 | Iustin Pop | |
490 | dcb93971 | Michael Hanselmann | def NodeVolumes(): |
491 | dcb93971 | Michael Hanselmann | """List all volumes on this node.
|
492 | dcb93971 | Michael Hanselmann |
|
493 | 10c2650b | Iustin Pop | @rtype: list
|
494 | 10c2650b | Iustin Pop | @return:
|
495 | 10c2650b | Iustin Pop | A list of dictionaries, each having four keys:
|
496 | 10c2650b | Iustin Pop | - name: the logical volume name,
|
497 | 10c2650b | Iustin Pop | - size: the size of the logical volume
|
498 | 10c2650b | Iustin Pop | - dev: the physical device on which the LV lives
|
499 | 10c2650b | Iustin Pop | - vg: the volume group to which it belongs
|
500 | 10c2650b | Iustin Pop |
|
501 | 10c2650b | Iustin Pop | In case of errors, we return an empty list and log the
|
502 | 10c2650b | Iustin Pop | error.
|
503 | 10c2650b | Iustin Pop |
|
504 | 10c2650b | Iustin Pop | Note that since a logical volume can live on multiple physical
|
505 | 10c2650b | Iustin Pop | volumes, the resulting list might include a logical volume
|
506 | 10c2650b | Iustin Pop | multiple times.
|
507 | 10c2650b | Iustin Pop |
|
508 | dcb93971 | Michael Hanselmann | """
|
509 | dcb93971 | Michael Hanselmann | result = utils.RunCmd(["lvs", "--noheadings", "--units=m", "--nosuffix", |
510 | dcb93971 | Michael Hanselmann | "--separator=|",
|
511 | dcb93971 | Michael Hanselmann | "--options=lv_name,lv_size,devices,vg_name"])
|
512 | dcb93971 | Michael Hanselmann | if result.failed:
|
513 | 18682bca | Iustin Pop | logging.error("Failed to list logical volumes, lvs output: %s",
|
514 | 18682bca | Iustin Pop | result.output) |
515 | 3f5bd234 | Iustin Pop | return []
|
516 | dcb93971 | Michael Hanselmann | |
517 | dcb93971 | Michael Hanselmann | def parse_dev(dev): |
518 | dcb93971 | Michael Hanselmann | if '(' in dev: |
519 | dcb93971 | Michael Hanselmann | return dev.split('(')[0] |
520 | dcb93971 | Michael Hanselmann | else:
|
521 | dcb93971 | Michael Hanselmann | return dev
|
522 | dcb93971 | Michael Hanselmann | |
523 | dcb93971 | Michael Hanselmann | def map_line(line): |
524 | dcb93971 | Michael Hanselmann | return {
|
525 | dcb93971 | Michael Hanselmann | 'name': line[0].strip(), |
526 | dcb93971 | Michael Hanselmann | 'size': line[1].strip(), |
527 | dcb93971 | Michael Hanselmann | 'dev': parse_dev(line[2].strip()), |
528 | dcb93971 | Michael Hanselmann | 'vg': line[3].strip(), |
529 | dcb93971 | Michael Hanselmann | } |
530 | dcb93971 | Michael Hanselmann | |
531 | a17a7623 | Iustin Pop | return [map_line(line.split('|')) for line in result.stdout.splitlines() |
532 | a17a7623 | Iustin Pop | if line.count('|') >= 3] |
533 | dcb93971 | Michael Hanselmann | |
534 | dcb93971 | Michael Hanselmann | |
535 | a8083063 | Iustin Pop | def BridgesExist(bridges_list): |
536 | 2f8598a5 | Alexander Schreiber | """Check if a list of bridges exist on the current node.
|
537 | a8083063 | Iustin Pop |
|
538 | b1206984 | Iustin Pop | @rtype: boolean
|
539 | b1206984 | Iustin Pop | @return: C{True} if all of them exist, C{False} otherwise
|
540 | a8083063 | Iustin Pop |
|
541 | a8083063 | Iustin Pop | """
|
542 | a8083063 | Iustin Pop | for bridge in bridges_list: |
543 | a8083063 | Iustin Pop | if not utils.BridgeExists(bridge): |
544 | a8083063 | Iustin Pop | return False |
545 | a8083063 | Iustin Pop | |
546 | a8083063 | Iustin Pop | return True |
547 | a8083063 | Iustin Pop | |
548 | a8083063 | Iustin Pop | |
549 | e69d05fd | Iustin Pop | def GetInstanceList(hypervisor_list): |
550 | 2f8598a5 | Alexander Schreiber | """Provides a list of instances.
|
551 | a8083063 | Iustin Pop |
|
552 | e69d05fd | Iustin Pop | @type hypervisor_list: list
|
553 | e69d05fd | Iustin Pop | @param hypervisor_list: the list of hypervisors to query information
|
554 | e69d05fd | Iustin Pop |
|
555 | e69d05fd | Iustin Pop | @rtype: list
|
556 | e69d05fd | Iustin Pop | @return: a list of all running instances on the current node
|
557 | 10c2650b | Iustin Pop | - instance1.example.com
|
558 | 10c2650b | Iustin Pop | - instance2.example.com
|
559 | a8083063 | Iustin Pop |
|
560 | 098c0958 | Michael Hanselmann | """
|
561 | e69d05fd | Iustin Pop | results = [] |
562 | e69d05fd | Iustin Pop | for hname in hypervisor_list: |
563 | e69d05fd | Iustin Pop | try:
|
564 | e69d05fd | Iustin Pop | names = hypervisor.GetHypervisor(hname).ListInstances() |
565 | e69d05fd | Iustin Pop | results.extend(names) |
566 | e69d05fd | Iustin Pop | except errors.HypervisorError, err:
|
567 | e69d05fd | Iustin Pop | logging.exception("Error enumerating instances for hypevisor %s", hname)
|
568 | e69d05fd | Iustin Pop | # FIXME: should we somehow not propagate this to the master?
|
569 | e69d05fd | Iustin Pop | raise
|
570 | a8083063 | Iustin Pop | |
571 | e69d05fd | Iustin Pop | return results
|
572 | a8083063 | Iustin Pop | |
573 | a8083063 | Iustin Pop | |
574 | e69d05fd | Iustin Pop | def GetInstanceInfo(instance, hname): |
575 | 2f8598a5 | Alexander Schreiber | """Gives back the informations about an instance as a dictionary.
|
576 | a8083063 | Iustin Pop |
|
577 | e69d05fd | Iustin Pop | @type instance: string
|
578 | e69d05fd | Iustin Pop | @param instance: the instance name
|
579 | e69d05fd | Iustin Pop | @type hname: string
|
580 | e69d05fd | Iustin Pop | @param hname: the hypervisor type of the instance
|
581 | a8083063 | Iustin Pop |
|
582 | e69d05fd | Iustin Pop | @rtype: dict
|
583 | e69d05fd | Iustin Pop | @return: dictionary with the following keys:
|
584 | e69d05fd | Iustin Pop | - memory: memory size of instance (int)
|
585 | e69d05fd | Iustin Pop | - state: xen state of instance (string)
|
586 | e69d05fd | Iustin Pop | - time: cpu time of instance (float)
|
587 | a8083063 | Iustin Pop |
|
588 | 098c0958 | Michael Hanselmann | """
|
589 | a8083063 | Iustin Pop | output = {} |
590 | a8083063 | Iustin Pop | |
591 | e69d05fd | Iustin Pop | iinfo = hypervisor.GetHypervisor(hname).GetInstanceInfo(instance) |
592 | a8083063 | Iustin Pop | if iinfo is not None: |
593 | a8083063 | Iustin Pop | output['memory'] = iinfo[2] |
594 | a8083063 | Iustin Pop | output['state'] = iinfo[4] |
595 | a8083063 | Iustin Pop | output['time'] = iinfo[5] |
596 | a8083063 | Iustin Pop | |
597 | a8083063 | Iustin Pop | return output
|
598 | a8083063 | Iustin Pop | |
599 | a8083063 | Iustin Pop | |
600 | e69d05fd | Iustin Pop | def GetAllInstancesInfo(hypervisor_list): |
601 | a8083063 | Iustin Pop | """Gather data about all instances.
|
602 | a8083063 | Iustin Pop |
|
603 | 10c2650b | Iustin Pop | This is the equivalent of L{GetInstanceInfo}, except that it
|
604 | a8083063 | Iustin Pop | computes data for all instances at once, thus being faster if one
|
605 | a8083063 | Iustin Pop | needs data about more than one instance.
|
606 | a8083063 | Iustin Pop |
|
607 | e69d05fd | Iustin Pop | @type hypervisor_list: list
|
608 | e69d05fd | Iustin Pop | @param hypervisor_list: list of hypervisors to query for instance data
|
609 | e69d05fd | Iustin Pop |
|
610 | 955db481 | Guido Trotter | @rtype: dict
|
611 | e69d05fd | Iustin Pop | @return: dictionary of instance: data, with data having the following keys:
|
612 | e69d05fd | Iustin Pop | - memory: memory size of instance (int)
|
613 | e69d05fd | Iustin Pop | - state: xen state of instance (string)
|
614 | e69d05fd | Iustin Pop | - time: cpu time of instance (float)
|
615 | 10c2650b | Iustin Pop | - vcpus: the number of vcpus
|
616 | a8083063 | Iustin Pop |
|
617 | 098c0958 | Michael Hanselmann | """
|
618 | a8083063 | Iustin Pop | output = {} |
619 | a8083063 | Iustin Pop | |
620 | e69d05fd | Iustin Pop | for hname in hypervisor_list: |
621 | e69d05fd | Iustin Pop | iinfo = hypervisor.GetHypervisor(hname).GetAllInstancesInfo() |
622 | e69d05fd | Iustin Pop | if iinfo:
|
623 | e69d05fd | Iustin Pop | for name, inst_id, memory, vcpus, state, times in iinfo: |
624 | f23b5ae8 | Iustin Pop | value = { |
625 | e69d05fd | Iustin Pop | 'memory': memory,
|
626 | e69d05fd | Iustin Pop | 'vcpus': vcpus,
|
627 | e69d05fd | Iustin Pop | 'state': state,
|
628 | e69d05fd | Iustin Pop | 'time': times,
|
629 | e69d05fd | Iustin Pop | } |
630 | f23b5ae8 | Iustin Pop | if name in output and output[name] != value: |
631 | f23b5ae8 | Iustin Pop | raise errors.HypervisorError("Instance %s running duplicate" |
632 | f23b5ae8 | Iustin Pop | " with different parameters" % name)
|
633 | f23b5ae8 | Iustin Pop | output[name] = value |
634 | a8083063 | Iustin Pop | |
635 | a8083063 | Iustin Pop | return output
|
636 | a8083063 | Iustin Pop | |
637 | a8083063 | Iustin Pop | |
638 | d15a9ad3 | Guido Trotter | def AddOSToInstance(instance): |
639 | 2f8598a5 | Alexander Schreiber | """Add an OS to an instance.
|
640 | a8083063 | Iustin Pop |
|
641 | d15a9ad3 | Guido Trotter | @type instance: L{objects.Instance}
|
642 | d15a9ad3 | Guido Trotter | @param instance: Instance whose OS is to be installed
|
643 | 10c2650b | Iustin Pop | @rtype: boolean
|
644 | 10c2650b | Iustin Pop | @return: the success of the operation
|
645 | a8083063 | Iustin Pop |
|
646 | a8083063 | Iustin Pop | """
|
647 | a8083063 | Iustin Pop | inst_os = OSFromDisk(instance.os) |
648 | a8083063 | Iustin Pop | |
649 | 58f6e5ca | Guido Trotter | create_env = OSEnvironment(instance) |
650 | a8083063 | Iustin Pop | |
651 | a8083063 | Iustin Pop | logfile = "%s/add-%s-%s-%d.log" % (constants.LOG_OS_DIR, instance.os,
|
652 | a8083063 | Iustin Pop | instance.name, int(time.time()))
|
653 | decd5f45 | Iustin Pop | |
654 | d868edb4 | Iustin Pop | result = utils.RunCmd([inst_os.create_script], env=create_env, |
655 | d868edb4 | Iustin Pop | cwd=inst_os.path, output=logfile,) |
656 | decd5f45 | Iustin Pop | if result.failed:
|
657 | 18682bca | Iustin Pop | logging.error("os create command '%s' returned error: %s, logfile: %s,"
|
658 | d868edb4 | Iustin Pop | " output: %s", result.cmd, result.fail_reason, logfile,
|
659 | 18682bca | Iustin Pop | result.output) |
660 | decd5f45 | Iustin Pop | return False |
661 | decd5f45 | Iustin Pop | |
662 | decd5f45 | Iustin Pop | return True |
663 | decd5f45 | Iustin Pop | |
664 | decd5f45 | Iustin Pop | |
665 | d15a9ad3 | Guido Trotter | def RunRenameInstance(instance, old_name): |
666 | decd5f45 | Iustin Pop | """Run the OS rename script for an instance.
|
667 | decd5f45 | Iustin Pop |
|
668 | b1206984 | Iustin Pop | @type instance: L{objects.Instance}
|
669 | d15a9ad3 | Guido Trotter | @param instance: Instance whose OS is to be installed
|
670 | d15a9ad3 | Guido Trotter | @type old_name: string
|
671 | d15a9ad3 | Guido Trotter | @param old_name: previous instance name
|
672 | 10c2650b | Iustin Pop | @rtype: boolean
|
673 | 10c2650b | Iustin Pop | @return: the success of the operation
|
674 | decd5f45 | Iustin Pop |
|
675 | decd5f45 | Iustin Pop | """
|
676 | decd5f45 | Iustin Pop | inst_os = OSFromDisk(instance.os) |
677 | decd5f45 | Iustin Pop | |
678 | ff38b6c0 | Guido Trotter | rename_env = OSEnvironment(instance) |
679 | ff38b6c0 | Guido Trotter | rename_env['OLD_INSTANCE_NAME'] = old_name
|
680 | decd5f45 | Iustin Pop | |
681 | decd5f45 | Iustin Pop | logfile = "%s/rename-%s-%s-%s-%d.log" % (constants.LOG_OS_DIR, instance.os,
|
682 | decd5f45 | Iustin Pop | old_name, |
683 | decd5f45 | Iustin Pop | instance.name, int(time.time()))
|
684 | a8083063 | Iustin Pop | |
685 | d868edb4 | Iustin Pop | result = utils.RunCmd([inst_os.rename_script], env=rename_env, |
686 | d868edb4 | Iustin Pop | cwd=inst_os.path, output=logfile) |
687 | a8083063 | Iustin Pop | |
688 | a8083063 | Iustin Pop | if result.failed:
|
689 | 18682bca | Iustin Pop | logging.error("os create command '%s' returned error: %s output: %s",
|
690 | d868edb4 | Iustin Pop | result.cmd, result.fail_reason, result.output) |
691 | a8083063 | Iustin Pop | return False |
692 | a8083063 | Iustin Pop | |
693 | a8083063 | Iustin Pop | return True |
694 | a8083063 | Iustin Pop | |
695 | a8083063 | Iustin Pop | |
696 | a8083063 | Iustin Pop | def _GetVGInfo(vg_name): |
697 | a8083063 | Iustin Pop | """Get informations about the volume group.
|
698 | a8083063 | Iustin Pop |
|
699 | 10c2650b | Iustin Pop | @type vg_name: str
|
700 | 10c2650b | Iustin Pop | @param vg_name: the volume group which we query
|
701 | 10c2650b | Iustin Pop | @rtype: dict
|
702 | 10c2650b | Iustin Pop | @return:
|
703 | 10c2650b | Iustin Pop | A dictionary with the following keys:
|
704 | 10c2650b | Iustin Pop | - C{vg_size} is the total size of the volume group in MiB
|
705 | 10c2650b | Iustin Pop | - C{vg_free} is the free size of the volume group in MiB
|
706 | 10c2650b | Iustin Pop | - C{pv_count} are the number of physical disks in that VG
|
707 | a8083063 | Iustin Pop |
|
708 | 10c2650b | Iustin Pop | If an error occurs during gathering of data, we return the same dict
|
709 | 10c2650b | Iustin Pop | with keys all set to None.
|
710 | f4d377e7 | Iustin Pop |
|
711 | a8083063 | Iustin Pop | """
|
712 | f4d377e7 | Iustin Pop | retdic = dict.fromkeys(["vg_size", "vg_free", "pv_count"]) |
713 | f4d377e7 | Iustin Pop | |
714 | a8083063 | Iustin Pop | retval = utils.RunCmd(["vgs", "-ovg_size,vg_free,pv_count", "--noheadings", |
715 | a8083063 | Iustin Pop | "--nosuffix", "--units=m", "--separator=:", vg_name]) |
716 | a8083063 | Iustin Pop | |
717 | a8083063 | Iustin Pop | if retval.failed:
|
718 | 18682bca | Iustin Pop | logging.error("volume group %s not present", vg_name)
|
719 | f4d377e7 | Iustin Pop | return retdic
|
720 | d87ae7d2 | Iustin Pop | valarr = retval.stdout.strip().rstrip(':').split(':') |
721 | f4d377e7 | Iustin Pop | if len(valarr) == 3: |
722 | f4d377e7 | Iustin Pop | try:
|
723 | f4d377e7 | Iustin Pop | retdic = { |
724 | f4d377e7 | Iustin Pop | "vg_size": int(round(float(valarr[0]), 0)), |
725 | f4d377e7 | Iustin Pop | "vg_free": int(round(float(valarr[1]), 0)), |
726 | f4d377e7 | Iustin Pop | "pv_count": int(valarr[2]), |
727 | f4d377e7 | Iustin Pop | } |
728 | f4d377e7 | Iustin Pop | except ValueError, err: |
729 | 18682bca | Iustin Pop | logging.exception("Fail to parse vgs output")
|
730 | f4d377e7 | Iustin Pop | else:
|
731 | 18682bca | Iustin Pop | logging.error("vgs output has the wrong number of fields (expected"
|
732 | 18682bca | Iustin Pop | " three): %s", str(valarr)) |
733 | a8083063 | Iustin Pop | return retdic
|
734 | a8083063 | Iustin Pop | |
735 | a8083063 | Iustin Pop | |
736 | a8083063 | Iustin Pop | def _GatherBlockDevs(instance): |
737 | a8083063 | Iustin Pop | """Set up an instance's block device(s).
|
738 | a8083063 | Iustin Pop |
|
739 | a8083063 | Iustin Pop | This is run on the primary node at instance startup. The block
|
740 | a8083063 | Iustin Pop | devices must be already assembled.
|
741 | a8083063 | Iustin Pop |
|
742 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
743 | 10c2650b | Iustin Pop | @param instance: the instance whose disks we shoul assemble
|
744 | 10c2650b | Iustin Pop | @rtype: list of L{bdev.BlockDev}
|
745 | 10c2650b | Iustin Pop | @return: list of the block devices
|
746 | 10c2650b | Iustin Pop |
|
747 | a8083063 | Iustin Pop | """
|
748 | a8083063 | Iustin Pop | block_devices = [] |
749 | a8083063 | Iustin Pop | for disk in instance.disks: |
750 | a8083063 | Iustin Pop | device = _RecursiveFindBD(disk) |
751 | a8083063 | Iustin Pop | if device is None: |
752 | a8083063 | Iustin Pop | raise errors.BlockDeviceError("Block device '%s' is not set up." % |
753 | a8083063 | Iustin Pop | str(disk))
|
754 | a8083063 | Iustin Pop | device.Open() |
755 | a8083063 | Iustin Pop | block_devices.append((disk, device)) |
756 | a8083063 | Iustin Pop | return block_devices
|
757 | a8083063 | Iustin Pop | |
758 | a8083063 | Iustin Pop | |
759 | a8083063 | Iustin Pop | def StartInstance(instance, extra_args): |
760 | a8083063 | Iustin Pop | """Start an instance.
|
761 | a8083063 | Iustin Pop |
|
762 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
763 | e69d05fd | Iustin Pop | @param instance: the instance object
|
764 | e69d05fd | Iustin Pop | @rtype: boolean
|
765 | e69d05fd | Iustin Pop | @return: whether the startup was successful or not
|
766 | a8083063 | Iustin Pop |
|
767 | 098c0958 | Michael Hanselmann | """
|
768 | e69d05fd | Iustin Pop | running_instances = GetInstanceList([instance.hypervisor]) |
769 | a8083063 | Iustin Pop | |
770 | a8083063 | Iustin Pop | if instance.name in running_instances: |
771 | a8083063 | Iustin Pop | return True |
772 | a8083063 | Iustin Pop | |
773 | a8083063 | Iustin Pop | block_devices = _GatherBlockDevs(instance) |
774 | e69d05fd | Iustin Pop | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
775 | a8083063 | Iustin Pop | |
776 | a8083063 | Iustin Pop | try:
|
777 | a8083063 | Iustin Pop | hyper.StartInstance(instance, block_devices, extra_args) |
778 | a8083063 | Iustin Pop | except errors.HypervisorError, err:
|
779 | 18682bca | Iustin Pop | logging.exception("Failed to start instance")
|
780 | a8083063 | Iustin Pop | return False |
781 | a8083063 | Iustin Pop | |
782 | a8083063 | Iustin Pop | return True |
783 | a8083063 | Iustin Pop | |
784 | a8083063 | Iustin Pop | |
785 | a8083063 | Iustin Pop | def ShutdownInstance(instance): |
786 | a8083063 | Iustin Pop | """Shut an instance down.
|
787 | a8083063 | Iustin Pop |
|
788 | 10c2650b | Iustin Pop | @note: this functions uses polling with a hardcoded timeout.
|
789 | 10c2650b | Iustin Pop |
|
790 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
791 | e69d05fd | Iustin Pop | @param instance: the instance object
|
792 | e69d05fd | Iustin Pop | @rtype: boolean
|
793 | e69d05fd | Iustin Pop | @return: whether the startup was successful or not
|
794 | a8083063 | Iustin Pop |
|
795 | 098c0958 | Michael Hanselmann | """
|
796 | e69d05fd | Iustin Pop | hv_name = instance.hypervisor |
797 | e69d05fd | Iustin Pop | running_instances = GetInstanceList([hv_name]) |
798 | a8083063 | Iustin Pop | |
799 | a8083063 | Iustin Pop | if instance.name not in running_instances: |
800 | a8083063 | Iustin Pop | return True |
801 | a8083063 | Iustin Pop | |
802 | e69d05fd | Iustin Pop | hyper = hypervisor.GetHypervisor(hv_name) |
803 | a8083063 | Iustin Pop | try:
|
804 | a8083063 | Iustin Pop | hyper.StopInstance(instance) |
805 | a8083063 | Iustin Pop | except errors.HypervisorError, err:
|
806 | 18682bca | Iustin Pop | logging.error("Failed to stop instance")
|
807 | a8083063 | Iustin Pop | return False |
808 | a8083063 | Iustin Pop | |
809 | a8083063 | Iustin Pop | # test every 10secs for 2min
|
810 | a8083063 | Iustin Pop | |
811 | a8083063 | Iustin Pop | time.sleep(1)
|
812 | a8083063 | Iustin Pop | for dummy in range(11): |
813 | e69d05fd | Iustin Pop | if instance.name not in GetInstanceList([hv_name]): |
814 | a8083063 | Iustin Pop | break
|
815 | a8083063 | Iustin Pop | time.sleep(10)
|
816 | a8083063 | Iustin Pop | else:
|
817 | a8083063 | Iustin Pop | # the shutdown did not succeed
|
818 | 18682bca | Iustin Pop | logging.error("shutdown of '%s' unsuccessful, using destroy", instance)
|
819 | a8083063 | Iustin Pop | |
820 | a8083063 | Iustin Pop | try:
|
821 | a8083063 | Iustin Pop | hyper.StopInstance(instance, force=True)
|
822 | a8083063 | Iustin Pop | except errors.HypervisorError, err:
|
823 | 18682bca | Iustin Pop | logging.exception("Failed to stop instance")
|
824 | a8083063 | Iustin Pop | return False |
825 | a8083063 | Iustin Pop | |
826 | a8083063 | Iustin Pop | time.sleep(1)
|
827 | e69d05fd | Iustin Pop | if instance.name in GetInstanceList([hv_name]): |
828 | 18682bca | Iustin Pop | logging.error("could not shutdown instance '%s' even by destroy",
|
829 | 18682bca | Iustin Pop | instance.name) |
830 | a8083063 | Iustin Pop | return False |
831 | a8083063 | Iustin Pop | |
832 | a8083063 | Iustin Pop | return True |
833 | a8083063 | Iustin Pop | |
834 | a8083063 | Iustin Pop | |
835 | 007a2f3e | Alexander Schreiber | def RebootInstance(instance, reboot_type, extra_args): |
836 | 007a2f3e | Alexander Schreiber | """Reboot an instance.
|
837 | 007a2f3e | Alexander Schreiber |
|
838 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
839 | 10c2650b | Iustin Pop | @param instance: the instance object to reboot
|
840 | 10c2650b | Iustin Pop | @type reboot_type: str
|
841 | 10c2650b | Iustin Pop | @param reboot_type: the type of reboot, one the following
|
842 | 10c2650b | Iustin Pop | constants:
|
843 | 10c2650b | Iustin Pop | - L{constants.INSTANCE_REBOOT_SOFT}: only reboot the
|
844 | 10c2650b | Iustin Pop | instance OS, do not recreate the VM
|
845 | 10c2650b | Iustin Pop | - L{constants.INSTANCE_REBOOT_HARD}: tear down and
|
846 | 10c2650b | Iustin Pop | restart the VM (at the hypervisor level)
|
847 | 10c2650b | Iustin Pop | - the other reboot type (L{constants.INSTANCE_REBOOT_HARD})
|
848 | 10c2650b | Iustin Pop | is not accepted here, since that mode is handled
|
849 | 10c2650b | Iustin Pop | differently
|
850 | 10c2650b | Iustin Pop | @rtype: boolean
|
851 | 10c2650b | Iustin Pop | @return: the success of the operation
|
852 | 007a2f3e | Alexander Schreiber |
|
853 | 007a2f3e | Alexander Schreiber | """
|
854 | e69d05fd | Iustin Pop | running_instances = GetInstanceList([instance.hypervisor]) |
855 | 007a2f3e | Alexander Schreiber | |
856 | 007a2f3e | Alexander Schreiber | if instance.name not in running_instances: |
857 | 18682bca | Iustin Pop | logging.error("Cannot reboot instance that is not running")
|
858 | 007a2f3e | Alexander Schreiber | return False |
859 | 007a2f3e | Alexander Schreiber | |
860 | e69d05fd | Iustin Pop | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
861 | 007a2f3e | Alexander Schreiber | if reboot_type == constants.INSTANCE_REBOOT_SOFT:
|
862 | 007a2f3e | Alexander Schreiber | try:
|
863 | 007a2f3e | Alexander Schreiber | hyper.RebootInstance(instance) |
864 | 007a2f3e | Alexander Schreiber | except errors.HypervisorError, err:
|
865 | 18682bca | Iustin Pop | logging.exception("Failed to soft reboot instance")
|
866 | 007a2f3e | Alexander Schreiber | return False |
867 | 007a2f3e | Alexander Schreiber | elif reboot_type == constants.INSTANCE_REBOOT_HARD:
|
868 | 007a2f3e | Alexander Schreiber | try:
|
869 | 007a2f3e | Alexander Schreiber | ShutdownInstance(instance) |
870 | 007a2f3e | Alexander Schreiber | StartInstance(instance, extra_args) |
871 | 007a2f3e | Alexander Schreiber | except errors.HypervisorError, err:
|
872 | 18682bca | Iustin Pop | logging.exception("Failed to hard reboot instance")
|
873 | 007a2f3e | Alexander Schreiber | return False |
874 | 007a2f3e | Alexander Schreiber | else:
|
875 | 007a2f3e | Alexander Schreiber | raise errors.ParameterError("reboot_type invalid") |
876 | 007a2f3e | Alexander Schreiber | |
877 | 007a2f3e | Alexander Schreiber | return True |
878 | 007a2f3e | Alexander Schreiber | |
879 | 007a2f3e | Alexander Schreiber | |
880 | 2a10865c | Iustin Pop | def MigrateInstance(instance, target, live): |
881 | 2a10865c | Iustin Pop | """Migrates an instance to another node.
|
882 | 2a10865c | Iustin Pop |
|
883 | b1206984 | Iustin Pop | @type instance: L{objects.Instance}
|
884 | 9f0e6b37 | Iustin Pop | @param instance: the instance definition
|
885 | 9f0e6b37 | Iustin Pop | @type target: string
|
886 | 9f0e6b37 | Iustin Pop | @param target: the target node name
|
887 | 9f0e6b37 | Iustin Pop | @type live: boolean
|
888 | 9f0e6b37 | Iustin Pop | @param live: whether the migration should be done live or not (the
|
889 | 9f0e6b37 | Iustin Pop | interpretation of this parameter is left to the hypervisor)
|
890 | 9f0e6b37 | Iustin Pop | @rtype: tuple
|
891 | 9f0e6b37 | Iustin Pop | @return: a tuple of (success, msg) where:
|
892 | 9f0e6b37 | Iustin Pop | - succes is a boolean denoting the success/failure of the operation
|
893 | 9f0e6b37 | Iustin Pop | - msg is a string with details in case of failure
|
894 | 9f0e6b37 | Iustin Pop |
|
895 | 2a10865c | Iustin Pop | """
|
896 | e69d05fd | Iustin Pop | hyper = hypervisor.GetHypervisor(instance.hypervisor_name) |
897 | 2a10865c | Iustin Pop | |
898 | 2a10865c | Iustin Pop | try:
|
899 | 9f0e6b37 | Iustin Pop | hyper.MigrateInstance(instance.name, target, live) |
900 | 2a10865c | Iustin Pop | except errors.HypervisorError, err:
|
901 | 2a10865c | Iustin Pop | msg = "Failed to migrate instance: %s" % str(err) |
902 | 18682bca | Iustin Pop | logging.error(msg) |
903 | 2a10865c | Iustin Pop | return (False, msg) |
904 | 2a10865c | Iustin Pop | return (True, "Migration successfull") |
905 | 2a10865c | Iustin Pop | |
906 | 2a10865c | Iustin Pop | |
907 | 3f78eef2 | Iustin Pop | def CreateBlockDevice(disk, size, owner, on_primary, info): |
908 | a8083063 | Iustin Pop | """Creates a block device for an instance.
|
909 | a8083063 | Iustin Pop |
|
910 | b1206984 | Iustin Pop | @type disk: L{objects.Disk}
|
911 | b1206984 | Iustin Pop | @param disk: the object describing the disk we should create
|
912 | b1206984 | Iustin Pop | @type size: int
|
913 | b1206984 | Iustin Pop | @param size: the size of the physical underlying device, in MiB
|
914 | b1206984 | Iustin Pop | @type owner: str
|
915 | b1206984 | Iustin Pop | @param owner: the name of the instance for which disk is created,
|
916 | b1206984 | Iustin Pop | used for device cache data
|
917 | b1206984 | Iustin Pop | @type on_primary: boolean
|
918 | b1206984 | Iustin Pop | @param on_primary: indicates if it is the primary node or not
|
919 | b1206984 | Iustin Pop | @type info: string
|
920 | b1206984 | Iustin Pop | @param info: string that will be sent to the physical device
|
921 | b1206984 | Iustin Pop | creation, used for example to set (LVM) tags on LVs
|
922 | b1206984 | Iustin Pop |
|
923 | b1206984 | Iustin Pop | @return: the new unique_id of the device (this can sometime be
|
924 | b1206984 | Iustin Pop | computed only after creation), or None. On secondary nodes,
|
925 | b1206984 | Iustin Pop | it's not required to return anything.
|
926 | a8083063 | Iustin Pop |
|
927 | a8083063 | Iustin Pop | """
|
928 | a8083063 | Iustin Pop | clist = [] |
929 | a8083063 | Iustin Pop | if disk.children:
|
930 | a8083063 | Iustin Pop | for child in disk.children: |
931 | 3f78eef2 | Iustin Pop | crdev = _RecursiveAssembleBD(child, owner, on_primary) |
932 | a8083063 | Iustin Pop | if on_primary or disk.AssembleOnSecondary(): |
933 | a8083063 | Iustin Pop | # we need the children open in case the device itself has to
|
934 | a8083063 | Iustin Pop | # be assembled
|
935 | a8083063 | Iustin Pop | crdev.Open() |
936 | a8083063 | Iustin Pop | clist.append(crdev) |
937 | a8083063 | Iustin Pop | try:
|
938 | a8083063 | Iustin Pop | device = bdev.FindDevice(disk.dev_type, disk.physical_id, clist) |
939 | a8083063 | Iustin Pop | if device is not None: |
940 | 18682bca | Iustin Pop | logging.info("removing existing device %s", disk)
|
941 | a8083063 | Iustin Pop | device.Remove() |
942 | a8083063 | Iustin Pop | except errors.BlockDeviceError, err:
|
943 | a8083063 | Iustin Pop | pass
|
944 | a8083063 | Iustin Pop | |
945 | a8083063 | Iustin Pop | device = bdev.Create(disk.dev_type, disk.physical_id, |
946 | a8083063 | Iustin Pop | clist, size) |
947 | a8083063 | Iustin Pop | if device is None: |
948 | a8083063 | Iustin Pop | raise ValueError("Can't create child device for %s, %s" % |
949 | a8083063 | Iustin Pop | (disk, size)) |
950 | a8083063 | Iustin Pop | if on_primary or disk.AssembleOnSecondary(): |
951 | cf5a8306 | Iustin Pop | if not device.Assemble(): |
952 | 20a0c9ef | Guido Trotter | errorstring = "Can't assemble device after creation"
|
953 | 18682bca | Iustin Pop | logging.error(errorstring) |
954 | 20a0c9ef | Guido Trotter | raise errors.BlockDeviceError("%s, very unusual event - check the node" |
955 | 20a0c9ef | Guido Trotter | " daemon logs" % errorstring)
|
956 | e31c43f7 | Michael Hanselmann | device.SetSyncSpeed(constants.SYNC_SPEED) |
957 | a8083063 | Iustin Pop | if on_primary or disk.OpenOnSecondary(): |
958 | a8083063 | Iustin Pop | device.Open(force=True)
|
959 | 3f78eef2 | Iustin Pop | DevCacheManager.UpdateCache(device.dev_path, owner, |
960 | 3f78eef2 | Iustin Pop | on_primary, disk.iv_name) |
961 | a0c3fea1 | Michael Hanselmann | |
962 | a0c3fea1 | Michael Hanselmann | device.SetInfo(info) |
963 | a0c3fea1 | Michael Hanselmann | |
964 | a8083063 | Iustin Pop | physical_id = device.unique_id |
965 | a8083063 | Iustin Pop | return physical_id
|
966 | a8083063 | Iustin Pop | |
967 | a8083063 | Iustin Pop | |
968 | a8083063 | Iustin Pop | def RemoveBlockDevice(disk): |
969 | a8083063 | Iustin Pop | """Remove a block device.
|
970 | a8083063 | Iustin Pop |
|
971 | 10c2650b | Iustin Pop | @note: This is intended to be called recursively.
|
972 | 10c2650b | Iustin Pop |
|
973 | c41eea6e | Iustin Pop | @type disk: L{objects.Disk}
|
974 | 10c2650b | Iustin Pop | @param disk: the disk object we should remove
|
975 | 10c2650b | Iustin Pop | @rtype: boolean
|
976 | 10c2650b | Iustin Pop | @return: the success of the operation
|
977 | a8083063 | Iustin Pop |
|
978 | a8083063 | Iustin Pop | """
|
979 | a8083063 | Iustin Pop | try:
|
980 | bca2e7f4 | Iustin Pop | rdev = _RecursiveFindBD(disk) |
981 | a8083063 | Iustin Pop | except errors.BlockDeviceError, err:
|
982 | a8083063 | Iustin Pop | # probably can't attach
|
983 | 18682bca | Iustin Pop | logging.info("Can't attach to device %s in remove", disk)
|
984 | a8083063 | Iustin Pop | rdev = None
|
985 | a8083063 | Iustin Pop | if rdev is not None: |
986 | 3f78eef2 | Iustin Pop | r_path = rdev.dev_path |
987 | a8083063 | Iustin Pop | result = rdev.Remove() |
988 | 3f78eef2 | Iustin Pop | if result:
|
989 | 3f78eef2 | Iustin Pop | DevCacheManager.RemoveCache(r_path) |
990 | a8083063 | Iustin Pop | else:
|
991 | a8083063 | Iustin Pop | result = True
|
992 | a8083063 | Iustin Pop | if disk.children:
|
993 | a8083063 | Iustin Pop | for child in disk.children: |
994 | a8083063 | Iustin Pop | result = result and RemoveBlockDevice(child)
|
995 | a8083063 | Iustin Pop | return result
|
996 | a8083063 | Iustin Pop | |
997 | a8083063 | Iustin Pop | |
998 | 3f78eef2 | Iustin Pop | def _RecursiveAssembleBD(disk, owner, as_primary): |
999 | a8083063 | Iustin Pop | """Activate a block device for an instance.
|
1000 | a8083063 | Iustin Pop |
|
1001 | a8083063 | Iustin Pop | This is run on the primary and secondary nodes for an instance.
|
1002 | a8083063 | Iustin Pop |
|
1003 | 10c2650b | Iustin Pop | @note: this function is called recursively.
|
1004 | a8083063 | Iustin Pop |
|
1005 | 10c2650b | Iustin Pop | @type disk: L{objects.Disk}
|
1006 | 10c2650b | Iustin Pop | @param disk: the disk we try to assemble
|
1007 | 10c2650b | Iustin Pop | @type owner: str
|
1008 | 10c2650b | Iustin Pop | @param owner: the name of the instance which owns the disk
|
1009 | 10c2650b | Iustin Pop | @type as_primary: boolean
|
1010 | 10c2650b | Iustin Pop | @param as_primary: if we should make the block device
|
1011 | 10c2650b | Iustin Pop | read/write
|
1012 | a8083063 | Iustin Pop |
|
1013 | 10c2650b | Iustin Pop | @return: the assembled device or None (in case no device
|
1014 | 10c2650b | Iustin Pop | was assembled)
|
1015 | 10c2650b | Iustin Pop | @raise errors.BlockDeviceError: in case there is an error
|
1016 | 10c2650b | Iustin Pop | during the activation of the children or the device
|
1017 | 10c2650b | Iustin Pop | itself
|
1018 | a8083063 | Iustin Pop |
|
1019 | a8083063 | Iustin Pop | """
|
1020 | a8083063 | Iustin Pop | children = [] |
1021 | a8083063 | Iustin Pop | if disk.children:
|
1022 | fc1dc9d7 | Iustin Pop | mcn = disk.ChildrenNeeded() |
1023 | fc1dc9d7 | Iustin Pop | if mcn == -1: |
1024 | fc1dc9d7 | Iustin Pop | mcn = 0 # max number of Nones allowed |
1025 | fc1dc9d7 | Iustin Pop | else:
|
1026 | fc1dc9d7 | Iustin Pop | mcn = len(disk.children) - mcn # max number of Nones |
1027 | a8083063 | Iustin Pop | for chld_disk in disk.children: |
1028 | fc1dc9d7 | Iustin Pop | try:
|
1029 | fc1dc9d7 | Iustin Pop | cdev = _RecursiveAssembleBD(chld_disk, owner, as_primary) |
1030 | fc1dc9d7 | Iustin Pop | except errors.BlockDeviceError, err:
|
1031 | 7803d4d3 | Iustin Pop | if children.count(None) >= mcn: |
1032 | fc1dc9d7 | Iustin Pop | raise
|
1033 | fc1dc9d7 | Iustin Pop | cdev = None
|
1034 | 18682bca | Iustin Pop | logging.debug("Error in child activation: %s", str(err)) |
1035 | fc1dc9d7 | Iustin Pop | children.append(cdev) |
1036 | a8083063 | Iustin Pop | |
1037 | a8083063 | Iustin Pop | if as_primary or disk.AssembleOnSecondary(): |
1038 | a8083063 | Iustin Pop | r_dev = bdev.AttachOrAssemble(disk.dev_type, disk.physical_id, children) |
1039 | e31c43f7 | Michael Hanselmann | r_dev.SetSyncSpeed(constants.SYNC_SPEED) |
1040 | a8083063 | Iustin Pop | result = r_dev |
1041 | a8083063 | Iustin Pop | if as_primary or disk.OpenOnSecondary(): |
1042 | a8083063 | Iustin Pop | r_dev.Open() |
1043 | 3f78eef2 | Iustin Pop | DevCacheManager.UpdateCache(r_dev.dev_path, owner, |
1044 | 3f78eef2 | Iustin Pop | as_primary, disk.iv_name) |
1045 | 3f78eef2 | Iustin Pop | |
1046 | a8083063 | Iustin Pop | else:
|
1047 | a8083063 | Iustin Pop | result = True
|
1048 | a8083063 | Iustin Pop | return result
|
1049 | a8083063 | Iustin Pop | |
1050 | a8083063 | Iustin Pop | |
1051 | 3f78eef2 | Iustin Pop | def AssembleBlockDevice(disk, owner, as_primary): |
1052 | a8083063 | Iustin Pop | """Activate a block device for an instance.
|
1053 | a8083063 | Iustin Pop |
|
1054 | a8083063 | Iustin Pop | This is a wrapper over _RecursiveAssembleBD.
|
1055 | a8083063 | Iustin Pop |
|
1056 | b1206984 | Iustin Pop | @rtype: str or boolean
|
1057 | b1206984 | Iustin Pop | @return: a C{/dev/...} path for primary nodes, and
|
1058 | b1206984 | Iustin Pop | C{True} for secondary nodes
|
1059 | a8083063 | Iustin Pop |
|
1060 | a8083063 | Iustin Pop | """
|
1061 | 3f78eef2 | Iustin Pop | result = _RecursiveAssembleBD(disk, owner, as_primary) |
1062 | a8083063 | Iustin Pop | if isinstance(result, bdev.BlockDev): |
1063 | a8083063 | Iustin Pop | result = result.dev_path |
1064 | a8083063 | Iustin Pop | return result
|
1065 | a8083063 | Iustin Pop | |
1066 | a8083063 | Iustin Pop | |
1067 | a8083063 | Iustin Pop | def ShutdownBlockDevice(disk): |
1068 | a8083063 | Iustin Pop | """Shut down a block device.
|
1069 | a8083063 | Iustin Pop |
|
1070 | c41eea6e | Iustin Pop | First, if the device is assembled (Attach() is successfull), then
|
1071 | c41eea6e | Iustin Pop | the device is shutdown. Then the children of the device are
|
1072 | c41eea6e | Iustin Pop | shutdown.
|
1073 | a8083063 | Iustin Pop |
|
1074 | a8083063 | Iustin Pop | This function is called recursively. Note that we don't cache the
|
1075 | a8083063 | Iustin Pop | children or such, as oppossed to assemble, shutdown of different
|
1076 | a8083063 | Iustin Pop | devices doesn't require that the upper device was active.
|
1077 | a8083063 | Iustin Pop |
|
1078 | 10c2650b | Iustin Pop | @type disk: L{objects.Disk}
|
1079 | 10c2650b | Iustin Pop | @param disk: the description of the disk we should
|
1080 | 10c2650b | Iustin Pop | shutdown
|
1081 | 10c2650b | Iustin Pop | @rtype: boolean
|
1082 | 10c2650b | Iustin Pop | @return: the success of the operation
|
1083 | 10c2650b | Iustin Pop |
|
1084 | a8083063 | Iustin Pop | """
|
1085 | a8083063 | Iustin Pop | r_dev = _RecursiveFindBD(disk) |
1086 | a8083063 | Iustin Pop | if r_dev is not None: |
1087 | 3f78eef2 | Iustin Pop | r_path = r_dev.dev_path |
1088 | a8083063 | Iustin Pop | result = r_dev.Shutdown() |
1089 | 3f78eef2 | Iustin Pop | if result:
|
1090 | 3f78eef2 | Iustin Pop | DevCacheManager.RemoveCache(r_path) |
1091 | a8083063 | Iustin Pop | else:
|
1092 | a8083063 | Iustin Pop | result = True
|
1093 | a8083063 | Iustin Pop | if disk.children:
|
1094 | a8083063 | Iustin Pop | for child in disk.children: |
1095 | a8083063 | Iustin Pop | result = result and ShutdownBlockDevice(child)
|
1096 | a8083063 | Iustin Pop | return result
|
1097 | a8083063 | Iustin Pop | |
1098 | a8083063 | Iustin Pop | |
1099 | 153d9724 | Iustin Pop | def MirrorAddChildren(parent_cdev, new_cdevs): |
1100 | 153d9724 | Iustin Pop | """Extend a mirrored block device.
|
1101 | a8083063 | Iustin Pop |
|
1102 | 10c2650b | Iustin Pop | @type parent_cdev: L{objects.Disk}
|
1103 | 10c2650b | Iustin Pop | @param parent_cdev: the disk to which we should add children
|
1104 | 10c2650b | Iustin Pop | @type new_cdevs: list of L{objects.Disk}
|
1105 | 10c2650b | Iustin Pop | @param new_cdevs: the list of children which we should add
|
1106 | 10c2650b | Iustin Pop | @rtype: boolean
|
1107 | 10c2650b | Iustin Pop | @return: the success of the operation
|
1108 | 10c2650b | Iustin Pop |
|
1109 | a8083063 | Iustin Pop | """
|
1110 | bca2e7f4 | Iustin Pop | parent_bdev = _RecursiveFindBD(parent_cdev) |
1111 | 153d9724 | Iustin Pop | if parent_bdev is None: |
1112 | 18682bca | Iustin Pop | logging.error("Can't find parent device")
|
1113 | a8083063 | Iustin Pop | return False |
1114 | 153d9724 | Iustin Pop | new_bdevs = [_RecursiveFindBD(disk) for disk in new_cdevs] |
1115 | 153d9724 | Iustin Pop | if new_bdevs.count(None) > 0: |
1116 | 18682bca | Iustin Pop | logging.error("Can't find new device(s) to add: %s:%s",
|
1117 | 18682bca | Iustin Pop | new_bdevs, new_cdevs) |
1118 | a8083063 | Iustin Pop | return False |
1119 | 153d9724 | Iustin Pop | parent_bdev.AddChildren(new_bdevs) |
1120 | a8083063 | Iustin Pop | return True |
1121 | a8083063 | Iustin Pop | |
1122 | a8083063 | Iustin Pop | |
1123 | 153d9724 | Iustin Pop | def MirrorRemoveChildren(parent_cdev, new_cdevs): |
1124 | 153d9724 | Iustin Pop | """Shrink a mirrored block device.
|
1125 | a8083063 | Iustin Pop |
|
1126 | 10c2650b | Iustin Pop | @type parent_cdev: L{objects.Disk}
|
1127 | 10c2650b | Iustin Pop | @param parent_cdev: the disk from which we should remove children
|
1128 | 10c2650b | Iustin Pop | @type new_cdevs: list of L{objects.Disk}
|
1129 | 10c2650b | Iustin Pop | @param new_cdevs: the list of children which we should remove
|
1130 | 10c2650b | Iustin Pop | @rtype: boolean
|
1131 | 10c2650b | Iustin Pop | @return: the success of the operation
|
1132 | 10c2650b | Iustin Pop |
|
1133 | a8083063 | Iustin Pop | """
|
1134 | 153d9724 | Iustin Pop | parent_bdev = _RecursiveFindBD(parent_cdev) |
1135 | 153d9724 | Iustin Pop | if parent_bdev is None: |
1136 | 18682bca | Iustin Pop | logging.error("Can't find parent in remove children: %s", parent_cdev)
|
1137 | a8083063 | Iustin Pop | return False |
1138 | e739bd57 | Iustin Pop | devs = [] |
1139 | e739bd57 | Iustin Pop | for disk in new_cdevs: |
1140 | e739bd57 | Iustin Pop | rpath = disk.StaticDevPath() |
1141 | e739bd57 | Iustin Pop | if rpath is None: |
1142 | e739bd57 | Iustin Pop | bd = _RecursiveFindBD(disk) |
1143 | e739bd57 | Iustin Pop | if bd is None: |
1144 | 18682bca | Iustin Pop | logging.error("Can't find dynamic device %s while removing children",
|
1145 | 18682bca | Iustin Pop | disk) |
1146 | e739bd57 | Iustin Pop | return False |
1147 | e739bd57 | Iustin Pop | else:
|
1148 | e739bd57 | Iustin Pop | devs.append(bd.dev_path) |
1149 | e739bd57 | Iustin Pop | else:
|
1150 | e739bd57 | Iustin Pop | devs.append(rpath) |
1151 | e739bd57 | Iustin Pop | parent_bdev.RemoveChildren(devs) |
1152 | a8083063 | Iustin Pop | return True |
1153 | a8083063 | Iustin Pop | |
1154 | a8083063 | Iustin Pop | |
1155 | a8083063 | Iustin Pop | def GetMirrorStatus(disks): |
1156 | a8083063 | Iustin Pop | """Get the mirroring status of a list of devices.
|
1157 | a8083063 | Iustin Pop |
|
1158 | 10c2650b | Iustin Pop | @type disks: list of L{objects.Disk}
|
1159 | 10c2650b | Iustin Pop | @param disks: the list of disks which we should query
|
1160 | 10c2650b | Iustin Pop | @rtype: disk
|
1161 | 10c2650b | Iustin Pop | @return:
|
1162 | 10c2650b | Iustin Pop | a list of (mirror_done, estimated_time) tuples, which
|
1163 | c41eea6e | Iustin Pop | are the result of L{bdev.BlockDev.CombinedSyncStatus}
|
1164 | 10c2650b | Iustin Pop | @raise errors.BlockDeviceError: if any of the disks cannot be
|
1165 | 10c2650b | Iustin Pop | found
|
1166 | a8083063 | Iustin Pop |
|
1167 | a8083063 | Iustin Pop | """
|
1168 | a8083063 | Iustin Pop | stats = [] |
1169 | a8083063 | Iustin Pop | for dsk in disks: |
1170 | a8083063 | Iustin Pop | rbd = _RecursiveFindBD(dsk) |
1171 | a8083063 | Iustin Pop | if rbd is None: |
1172 | 3ecf6786 | Iustin Pop | raise errors.BlockDeviceError("Can't find device %s" % str(dsk)) |
1173 | a8083063 | Iustin Pop | stats.append(rbd.CombinedSyncStatus()) |
1174 | a8083063 | Iustin Pop | return stats
|
1175 | a8083063 | Iustin Pop | |
1176 | a8083063 | Iustin Pop | |
1177 | bca2e7f4 | Iustin Pop | def _RecursiveFindBD(disk): |
1178 | a8083063 | Iustin Pop | """Check if a device is activated.
|
1179 | a8083063 | Iustin Pop |
|
1180 | a8083063 | Iustin Pop | If so, return informations about the real device.
|
1181 | a8083063 | Iustin Pop |
|
1182 | 10c2650b | Iustin Pop | @type disk: L{objects.Disk}
|
1183 | 10c2650b | Iustin Pop | @param disk: the disk object we need to find
|
1184 | a8083063 | Iustin Pop |
|
1185 | 10c2650b | Iustin Pop | @return: None if the device can't be found,
|
1186 | 10c2650b | Iustin Pop | otherwise the device instance
|
1187 | a8083063 | Iustin Pop |
|
1188 | a8083063 | Iustin Pop | """
|
1189 | a8083063 | Iustin Pop | children = [] |
1190 | a8083063 | Iustin Pop | if disk.children:
|
1191 | a8083063 | Iustin Pop | for chdisk in disk.children: |
1192 | a8083063 | Iustin Pop | children.append(_RecursiveFindBD(chdisk)) |
1193 | a8083063 | Iustin Pop | |
1194 | a8083063 | Iustin Pop | return bdev.FindDevice(disk.dev_type, disk.physical_id, children)
|
1195 | a8083063 | Iustin Pop | |
1196 | a8083063 | Iustin Pop | |
1197 | a8083063 | Iustin Pop | def FindBlockDevice(disk): |
1198 | a8083063 | Iustin Pop | """Check if a device is activated.
|
1199 | a8083063 | Iustin Pop |
|
1200 | 10c2650b | Iustin Pop | If it is, return informations about the real device.
|
1201 | a8083063 | Iustin Pop |
|
1202 | 10c2650b | Iustin Pop | @type disk: L{objects.Disk}
|
1203 | 10c2650b | Iustin Pop | @param disk: the disk to find
|
1204 | 10c2650b | Iustin Pop | @rtype: None or tuple
|
1205 | 10c2650b | Iustin Pop | @return: None if the disk cannot be found, otherwise a
|
1206 | 10c2650b | Iustin Pop | tuple (device_path, major, minor, sync_percent,
|
1207 | 10c2650b | Iustin Pop | estimated_time, is_degraded)
|
1208 | a8083063 | Iustin Pop |
|
1209 | a8083063 | Iustin Pop | """
|
1210 | a8083063 | Iustin Pop | rbd = _RecursiveFindBD(disk) |
1211 | a8083063 | Iustin Pop | if rbd is None: |
1212 | a8083063 | Iustin Pop | return rbd
|
1213 | 0834c866 | Iustin Pop | return (rbd.dev_path, rbd.major, rbd.minor) + rbd.GetSyncStatus()
|
1214 | a8083063 | Iustin Pop | |
1215 | a8083063 | Iustin Pop | |
1216 | a8083063 | Iustin Pop | def UploadFile(file_name, data, mode, uid, gid, atime, mtime): |
1217 | a8083063 | Iustin Pop | """Write a file to the filesystem.
|
1218 | a8083063 | Iustin Pop |
|
1219 | a8083063 | Iustin Pop | This allows the master to overwrite(!) a file. It will only perform
|
1220 | a8083063 | Iustin Pop | the operation if the file belongs to a list of configuration files.
|
1221 | a8083063 | Iustin Pop |
|
1222 | 10c2650b | Iustin Pop | @type file_name: str
|
1223 | 10c2650b | Iustin Pop | @param file_name: the target file name
|
1224 | 10c2650b | Iustin Pop | @type data: str
|
1225 | 10c2650b | Iustin Pop | @param data: the new contents of the file
|
1226 | 10c2650b | Iustin Pop | @type mode: int
|
1227 | 10c2650b | Iustin Pop | @param mode: the mode to give the file (can be None)
|
1228 | 10c2650b | Iustin Pop | @type uid: int
|
1229 | 10c2650b | Iustin Pop | @param uid: the owner of the file (can be -1 for default)
|
1230 | 10c2650b | Iustin Pop | @type gid: int
|
1231 | 10c2650b | Iustin Pop | @param gid: the group of the file (can be -1 for default)
|
1232 | 10c2650b | Iustin Pop | @type atime: float
|
1233 | 10c2650b | Iustin Pop | @param atime: the atime to set on the file (can be None)
|
1234 | 10c2650b | Iustin Pop | @type mtime: float
|
1235 | 10c2650b | Iustin Pop | @param mtime: the mtime to set on the file (can be None)
|
1236 | 10c2650b | Iustin Pop | @rtype: boolean
|
1237 | 10c2650b | Iustin Pop | @return: the success of the operation; errors are logged
|
1238 | 10c2650b | Iustin Pop | in the node daemon log
|
1239 | 10c2650b | Iustin Pop |
|
1240 | a8083063 | Iustin Pop | """
|
1241 | a8083063 | Iustin Pop | if not os.path.isabs(file_name): |
1242 | 18682bca | Iustin Pop | logging.error("Filename passed to UploadFile is not absolute: '%s'",
|
1243 | 18682bca | Iustin Pop | file_name) |
1244 | a8083063 | Iustin Pop | return False |
1245 | a8083063 | Iustin Pop | |
1246 | 97628462 | Iustin Pop | allowed_files = [ |
1247 | 97628462 | Iustin Pop | constants.CLUSTER_CONF_FILE, |
1248 | 97628462 | Iustin Pop | constants.ETC_HOSTS, |
1249 | 97628462 | Iustin Pop | constants.SSH_KNOWN_HOSTS_FILE, |
1250 | 90fae627 | Guido Trotter | constants.VNC_PASSWORD_FILE, |
1251 | 97628462 | Iustin Pop | ] |
1252 | afee8008 | Michael Hanselmann | |
1253 | 553f1c1d | Michael Hanselmann | if file_name not in allowed_files: |
1254 | 18682bca | Iustin Pop | logging.error("Filename passed to UploadFile not in allowed"
|
1255 | 18682bca | Iustin Pop | " upload targets: '%s'", file_name)
|
1256 | a8083063 | Iustin Pop | return False |
1257 | a8083063 | Iustin Pop | |
1258 | 12bce260 | Michael Hanselmann | raw_data = _Decompress(data) |
1259 | 12bce260 | Michael Hanselmann | |
1260 | 12bce260 | Michael Hanselmann | utils.WriteFile(file_name, data=raw_data, mode=mode, uid=uid, gid=gid, |
1261 | 41a57aab | Michael Hanselmann | atime=atime, mtime=mtime) |
1262 | a8083063 | Iustin Pop | return True |
1263 | a8083063 | Iustin Pop | |
1264 | 386b57af | Iustin Pop | |
1265 | 03d1dba2 | Michael Hanselmann | def WriteSsconfFiles(values): |
1266 | 89b14f05 | Iustin Pop | """Update all ssconf files.
|
1267 | 89b14f05 | Iustin Pop |
|
1268 | 89b14f05 | Iustin Pop | Wrapper around the SimpleStore.WriteFiles.
|
1269 | 89b14f05 | Iustin Pop |
|
1270 | 89b14f05 | Iustin Pop | """
|
1271 | 89b14f05 | Iustin Pop | ssconf.SimpleStore().WriteFiles(values) |
1272 | 6ddc95ec | Michael Hanselmann | |
1273 | 6ddc95ec | Michael Hanselmann | |
1274 | a8083063 | Iustin Pop | def _ErrnoOrStr(err): |
1275 | a8083063 | Iustin Pop | """Format an EnvironmentError exception.
|
1276 | a8083063 | Iustin Pop |
|
1277 | 10c2650b | Iustin Pop | If the L{err} argument has an errno attribute, it will be looked up
|
1278 | 10c2650b | Iustin Pop | and converted into a textual C{E...} description. Otherwise the
|
1279 | 10c2650b | Iustin Pop | string representation of the error will be returned.
|
1280 | 10c2650b | Iustin Pop |
|
1281 | 10c2650b | Iustin Pop | @type err: L{EnvironmentError}
|
1282 | 10c2650b | Iustin Pop | @param err: the exception to format
|
1283 | a8083063 | Iustin Pop |
|
1284 | a8083063 | Iustin Pop | """
|
1285 | a8083063 | Iustin Pop | if hasattr(err, 'errno'): |
1286 | a8083063 | Iustin Pop | detail = errno.errorcode[err.errno] |
1287 | a8083063 | Iustin Pop | else:
|
1288 | a8083063 | Iustin Pop | detail = str(err)
|
1289 | a8083063 | Iustin Pop | return detail
|
1290 | a8083063 | Iustin Pop | |
1291 | 5d0fe286 | Iustin Pop | |
1292 | c26dabd7 | Guido Trotter | def _OSOndiskVersion(name, os_dir): |
1293 | 2f8598a5 | Alexander Schreiber | """Compute and return the API version of a given OS.
|
1294 | a8083063 | Iustin Pop |
|
1295 | 10c2650b | Iustin Pop | This function will try to read the API version of the OS given by
|
1296 | 7c3d51d4 | Guido Trotter | the 'name' parameter and residing in the 'os_dir' directory.
|
1297 | 7c3d51d4 | Guido Trotter |
|
1298 | 10c2650b | Iustin Pop | @type name: str
|
1299 | 10c2650b | Iustin Pop | @param name: the OS name we should look for
|
1300 | 10c2650b | Iustin Pop | @type os_dir: str
|
1301 | 10c2650b | Iustin Pop | @param os_dir: the directory inwhich we should look for the OS
|
1302 | 10c2650b | Iustin Pop | @rtype: int or None
|
1303 | 10c2650b | Iustin Pop | @return:
|
1304 | 10c2650b | Iustin Pop | Either an integer denoting the version or None in the
|
1305 | 10c2650b | Iustin Pop | case when this is not a valid OS name.
|
1306 | 10c2650b | Iustin Pop | @raise errors.InvalidOS: if the OS cannot be found
|
1307 | a8083063 | Iustin Pop |
|
1308 | a8083063 | Iustin Pop | """
|
1309 | a8083063 | Iustin Pop | api_file = os.path.sep.join([os_dir, "ganeti_api_version"])
|
1310 | a8083063 | Iustin Pop | |
1311 | a8083063 | Iustin Pop | try:
|
1312 | a8083063 | Iustin Pop | st = os.stat(api_file) |
1313 | a8083063 | Iustin Pop | except EnvironmentError, err: |
1314 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir, "'ganeti_api_version' file not" |
1315 | 3ecf6786 | Iustin Pop | " found (%s)" % _ErrnoOrStr(err))
|
1316 | a8083063 | Iustin Pop | |
1317 | a8083063 | Iustin Pop | if not stat.S_ISREG(stat.S_IFMT(st.st_mode)): |
1318 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir, "'ganeti_api_version' file is not" |
1319 | 3ecf6786 | Iustin Pop | " a regular file")
|
1320 | a8083063 | Iustin Pop | |
1321 | a8083063 | Iustin Pop | try:
|
1322 | a8083063 | Iustin Pop | f = open(api_file)
|
1323 | a8083063 | Iustin Pop | try:
|
1324 | 082a7f91 | Guido Trotter | api_versions = f.readlines() |
1325 | a8083063 | Iustin Pop | finally:
|
1326 | a8083063 | Iustin Pop | f.close() |
1327 | a8083063 | Iustin Pop | except EnvironmentError, err: |
1328 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir, "error while reading the" |
1329 | 3ecf6786 | Iustin Pop | " API version (%s)" % _ErrnoOrStr(err))
|
1330 | a8083063 | Iustin Pop | |
1331 | 082a7f91 | Guido Trotter | api_versions = [version.strip() for version in api_versions] |
1332 | a8083063 | Iustin Pop | try:
|
1333 | 082a7f91 | Guido Trotter | api_versions = [int(version) for version in api_versions] |
1334 | a8083063 | Iustin Pop | except (TypeError, ValueError), err: |
1335 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir,
|
1336 | 305a7297 | Guido Trotter | "API version is not integer (%s)" % str(err)) |
1337 | a8083063 | Iustin Pop | |
1338 | 082a7f91 | Guido Trotter | return api_versions
|
1339 | a8083063 | Iustin Pop | |
1340 | 386b57af | Iustin Pop | |
1341 | 7c3d51d4 | Guido Trotter | def DiagnoseOS(top_dirs=None): |
1342 | a8083063 | Iustin Pop | """Compute the validity for all OSes.
|
1343 | a8083063 | Iustin Pop |
|
1344 | 10c2650b | Iustin Pop | @type top_dirs: list
|
1345 | 10c2650b | Iustin Pop | @param top_dirs: the list of directories in which to
|
1346 | 10c2650b | Iustin Pop | search (if not given defaults to
|
1347 | 10c2650b | Iustin Pop | L{constants.OS_SEARCH_PATH})
|
1348 | 10c2650b | Iustin Pop | @rtype: list of L{objects.OS}
|
1349 | 10c2650b | Iustin Pop | @return: an OS object for each name in all the given
|
1350 | 10c2650b | Iustin Pop | directories
|
1351 | a8083063 | Iustin Pop |
|
1352 | a8083063 | Iustin Pop | """
|
1353 | 7c3d51d4 | Guido Trotter | if top_dirs is None: |
1354 | 7c3d51d4 | Guido Trotter | top_dirs = constants.OS_SEARCH_PATH |
1355 | a8083063 | Iustin Pop | |
1356 | a8083063 | Iustin Pop | result = [] |
1357 | 65fe4693 | Iustin Pop | for dir_name in top_dirs: |
1358 | 65fe4693 | Iustin Pop | if os.path.isdir(dir_name):
|
1359 | 7c3d51d4 | Guido Trotter | try:
|
1360 | 65fe4693 | Iustin Pop | f_names = utils.ListVisibleFiles(dir_name) |
1361 | 7c3d51d4 | Guido Trotter | except EnvironmentError, err: |
1362 | 18682bca | Iustin Pop | logging.exception("Can't list the OS directory %s", dir_name)
|
1363 | 7c3d51d4 | Guido Trotter | break
|
1364 | 7c3d51d4 | Guido Trotter | for name in f_names: |
1365 | 7c3d51d4 | Guido Trotter | try:
|
1366 | 65fe4693 | Iustin Pop | os_inst = OSFromDisk(name, base_dir=dir_name) |
1367 | 7c3d51d4 | Guido Trotter | result.append(os_inst) |
1368 | 7c3d51d4 | Guido Trotter | except errors.InvalidOS, err:
|
1369 | 8fa42c7c | Guido Trotter | result.append(objects.OS.FromInvalidOS(err)) |
1370 | a8083063 | Iustin Pop | |
1371 | a8083063 | Iustin Pop | return result
|
1372 | a8083063 | Iustin Pop | |
1373 | a8083063 | Iustin Pop | |
1374 | 56bcd3f4 | Guido Trotter | def OSFromDisk(name, base_dir=None): |
1375 | a8083063 | Iustin Pop | """Create an OS instance from disk.
|
1376 | a8083063 | Iustin Pop |
|
1377 | a8083063 | Iustin Pop | This function will return an OS instance if the given name is a
|
1378 | a8083063 | Iustin Pop | valid OS name. Otherwise, it will raise an appropriate
|
1379 | 10c2650b | Iustin Pop | L{errors.InvalidOS} exception, detailing why this is not a valid OS.
|
1380 | a8083063 | Iustin Pop |
|
1381 | 8ee4dc80 | Guido Trotter | @type base_dir: string
|
1382 | 8ee4dc80 | Guido Trotter | @keyword base_dir: Base directory containing OS installations.
|
1383 | 8ee4dc80 | Guido Trotter | Defaults to a search in all the OS_SEARCH_PATH dirs.
|
1384 | 10c2650b | Iustin Pop | @rtype: L{objects.OS}
|
1385 | 10c2650b | Iustin Pop | @return: the OS instance if we find a valid one
|
1386 | 10c2650b | Iustin Pop | @raise errors.InvalidOS: if we don't find a valid OS
|
1387 | 7c3d51d4 | Guido Trotter |
|
1388 | a8083063 | Iustin Pop | """
|
1389 | 56bcd3f4 | Guido Trotter | if base_dir is None: |
1390 | 57c177af | Iustin Pop | os_dir = utils.FindFile(name, constants.OS_SEARCH_PATH, os.path.isdir) |
1391 | c34c0cfd | Iustin Pop | if os_dir is None: |
1392 | c34c0cfd | Iustin Pop | raise errors.InvalidOS(name, None, "OS dir not found in search path") |
1393 | c34c0cfd | Iustin Pop | else:
|
1394 | c34c0cfd | Iustin Pop | os_dir = os.path.sep.join([base_dir, name]) |
1395 | a8083063 | Iustin Pop | |
1396 | 082a7f91 | Guido Trotter | api_versions = _OSOndiskVersion(name, os_dir) |
1397 | a8083063 | Iustin Pop | |
1398 | 082a7f91 | Guido Trotter | if constants.OS_API_VERSION not in api_versions: |
1399 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir, "API version mismatch" |
1400 | 305a7297 | Guido Trotter | " (found %s want %s)"
|
1401 | 082a7f91 | Guido Trotter | % (api_versions, constants.OS_API_VERSION)) |
1402 | a8083063 | Iustin Pop | |
1403 | a8083063 | Iustin Pop | # OS Scripts dictionary, we will populate it with the actual script names
|
1404 | 62dbbe7e | Guido Trotter | os_scripts = dict.fromkeys(constants.OS_SCRIPTS)
|
1405 | a8083063 | Iustin Pop | |
1406 | a8083063 | Iustin Pop | for script in os_scripts: |
1407 | a8083063 | Iustin Pop | os_scripts[script] = os.path.sep.join([os_dir, script]) |
1408 | a8083063 | Iustin Pop | |
1409 | a8083063 | Iustin Pop | try:
|
1410 | a8083063 | Iustin Pop | st = os.stat(os_scripts[script]) |
1411 | a8083063 | Iustin Pop | except EnvironmentError, err: |
1412 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir, "'%s' script missing (%s)" % |
1413 | 3ecf6786 | Iustin Pop | (script, _ErrnoOrStr(err))) |
1414 | a8083063 | Iustin Pop | |
1415 | a8083063 | Iustin Pop | if stat.S_IMODE(st.st_mode) & stat.S_IXUSR != stat.S_IXUSR:
|
1416 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir, "'%s' script not executable" % |
1417 | 305a7297 | Guido Trotter | script) |
1418 | a8083063 | Iustin Pop | |
1419 | a8083063 | Iustin Pop | if not stat.S_ISREG(stat.S_IFMT(st.st_mode)): |
1420 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir, "'%s' is not a regular file" % |
1421 | 305a7297 | Guido Trotter | script) |
1422 | a8083063 | Iustin Pop | |
1423 | a8083063 | Iustin Pop | |
1424 | 8fa42c7c | Guido Trotter | return objects.OS(name=name, path=os_dir, status=constants.OS_VALID_STATUS,
|
1425 | 62dbbe7e | Guido Trotter | create_script=os_scripts[constants.OS_SCRIPT_CREATE], |
1426 | 62dbbe7e | Guido Trotter | export_script=os_scripts[constants.OS_SCRIPT_EXPORT], |
1427 | 62dbbe7e | Guido Trotter | import_script=os_scripts[constants.OS_SCRIPT_IMPORT], |
1428 | 62dbbe7e | Guido Trotter | rename_script=os_scripts[constants.OS_SCRIPT_RENAME], |
1429 | 082a7f91 | Guido Trotter | api_versions=api_versions) |
1430 | a8083063 | Iustin Pop | |
1431 | 2266edb2 | Guido Trotter | def OSEnvironment(instance, debug=0): |
1432 | 2266edb2 | Guido Trotter | """Calculate the environment for an os script.
|
1433 | 2266edb2 | Guido Trotter |
|
1434 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
1435 | 2266edb2 | Guido Trotter | @param instance: target instance for the os script run
|
1436 | 2266edb2 | Guido Trotter | @type debug: integer
|
1437 | 10c2650b | Iustin Pop | @param debug: debug level (0 or 1, for OS Api 10)
|
1438 | 2266edb2 | Guido Trotter | @rtype: dict
|
1439 | 2266edb2 | Guido Trotter | @return: dict of environment variables
|
1440 | 10c2650b | Iustin Pop | @raise errors.BlockDeviceError: if the block device
|
1441 | 10c2650b | Iustin Pop | cannot be found
|
1442 | 2266edb2 | Guido Trotter |
|
1443 | 2266edb2 | Guido Trotter | """
|
1444 | 2266edb2 | Guido Trotter | result = {} |
1445 | 2266edb2 | Guido Trotter | result['OS_API_VERSION'] = '%d' % constants.OS_API_VERSION |
1446 | 2266edb2 | Guido Trotter | result['INSTANCE_NAME'] = instance.name
|
1447 | 2266edb2 | Guido Trotter | result['HYPERVISOR'] = instance.hypervisor
|
1448 | 2266edb2 | Guido Trotter | result['DISK_COUNT'] = '%d' % len(instance.disks) |
1449 | 2266edb2 | Guido Trotter | result['NIC_COUNT'] = '%d' % len(instance.nics) |
1450 | 2266edb2 | Guido Trotter | result['DEBUG_LEVEL'] = '%d' % debug |
1451 | 2266edb2 | Guido Trotter | for idx, disk in enumerate(instance.disks): |
1452 | 2266edb2 | Guido Trotter | real_disk = _RecursiveFindBD(disk) |
1453 | 2266edb2 | Guido Trotter | if real_disk is None: |
1454 | 2266edb2 | Guido Trotter | raise errors.BlockDeviceError("Block device '%s' is not set up" % |
1455 | 2266edb2 | Guido Trotter | str(disk))
|
1456 | 2266edb2 | Guido Trotter | real_disk.Open() |
1457 | 2266edb2 | Guido Trotter | result['DISK_%d_PATH' % idx] = real_disk.dev_path
|
1458 | 2266edb2 | Guido Trotter | # FIXME: When disks will have read-only mode, populate this
|
1459 | 2266edb2 | Guido Trotter | result['DISK_%d_ACCESS' % idx] = 'W' |
1460 | 2266edb2 | Guido Trotter | if constants.HV_DISK_TYPE in instance.hvparams: |
1461 | 2266edb2 | Guido Trotter | result['DISK_%d_FRONTEND_TYPE' % idx] = \
|
1462 | 2266edb2 | Guido Trotter | instance.hvparams[constants.HV_DISK_TYPE] |
1463 | 2266edb2 | Guido Trotter | if disk.dev_type in constants.LDS_BLOCK: |
1464 | 2266edb2 | Guido Trotter | result['DISK_%d_BACKEND_TYPE' % idx] = 'block' |
1465 | 2266edb2 | Guido Trotter | elif disk.dev_type == constants.LD_FILE:
|
1466 | 2266edb2 | Guido Trotter | result['DISK_%d_BACKEND_TYPE' % idx] = \
|
1467 | 2266edb2 | Guido Trotter | 'file:%s' % disk.physical_id[0] |
1468 | 2266edb2 | Guido Trotter | for idx, nic in enumerate(instance.nics): |
1469 | 2266edb2 | Guido Trotter | result['NIC_%d_MAC' % idx] = nic.mac
|
1470 | 2266edb2 | Guido Trotter | if nic.ip:
|
1471 | 2266edb2 | Guido Trotter | result['NIC_%d_IP' % idx] = nic.ip
|
1472 | 2266edb2 | Guido Trotter | result['NIC_%d_BRIDGE' % idx] = nic.bridge
|
1473 | 2266edb2 | Guido Trotter | if constants.HV_NIC_TYPE in instance.hvparams: |
1474 | 2266edb2 | Guido Trotter | result['NIC_%d_FRONTEND_TYPE' % idx] = \
|
1475 | 2266edb2 | Guido Trotter | instance.hvparams[constants.HV_NIC_TYPE] |
1476 | 2266edb2 | Guido Trotter | |
1477 | 2266edb2 | Guido Trotter | return result
|
1478 | a8083063 | Iustin Pop | |
1479 | 594609c0 | Iustin Pop | def GrowBlockDevice(disk, amount): |
1480 | 594609c0 | Iustin Pop | """Grow a stack of block devices.
|
1481 | 594609c0 | Iustin Pop |
|
1482 | 594609c0 | Iustin Pop | This function is called recursively, with the childrens being the
|
1483 | 10c2650b | Iustin Pop | first ones to resize.
|
1484 | 594609c0 | Iustin Pop |
|
1485 | 10c2650b | Iustin Pop | @type disk: L{objects.Disk}
|
1486 | 10c2650b | Iustin Pop | @param disk: the disk to be grown
|
1487 | 10c2650b | Iustin Pop | @rtype: (status, result)
|
1488 | 10c2650b | Iustin Pop | @return: a tuple with the status of the operation
|
1489 | 10c2650b | Iustin Pop | (True/False), and the errors message if status
|
1490 | 10c2650b | Iustin Pop | is False
|
1491 | 594609c0 | Iustin Pop |
|
1492 | 594609c0 | Iustin Pop | """
|
1493 | 594609c0 | Iustin Pop | r_dev = _RecursiveFindBD(disk) |
1494 | 594609c0 | Iustin Pop | if r_dev is None: |
1495 | 594609c0 | Iustin Pop | return False, "Cannot find block device %s" % (disk,) |
1496 | 594609c0 | Iustin Pop | |
1497 | 594609c0 | Iustin Pop | try:
|
1498 | 594609c0 | Iustin Pop | r_dev.Grow(amount) |
1499 | 594609c0 | Iustin Pop | except errors.BlockDeviceError, err:
|
1500 | 594609c0 | Iustin Pop | return False, str(err) |
1501 | 594609c0 | Iustin Pop | |
1502 | 594609c0 | Iustin Pop | return True, None |
1503 | 594609c0 | Iustin Pop | |
1504 | 594609c0 | Iustin Pop | |
1505 | a8083063 | Iustin Pop | def SnapshotBlockDevice(disk): |
1506 | a8083063 | Iustin Pop | """Create a snapshot copy of a block device.
|
1507 | a8083063 | Iustin Pop |
|
1508 | a8083063 | Iustin Pop | This function is called recursively, and the snapshot is actually created
|
1509 | a8083063 | Iustin Pop | just for the leaf lvm backend device.
|
1510 | a8083063 | Iustin Pop |
|
1511 | e9e9263d | Guido Trotter | @type disk: L{objects.Disk}
|
1512 | e9e9263d | Guido Trotter | @param disk: the disk to be snapshotted
|
1513 | e9e9263d | Guido Trotter | @rtype: string
|
1514 | e9e9263d | Guido Trotter | @return: snapshot disk path
|
1515 | a8083063 | Iustin Pop |
|
1516 | 098c0958 | Michael Hanselmann | """
|
1517 | a8083063 | Iustin Pop | if disk.children:
|
1518 | a8083063 | Iustin Pop | if len(disk.children) == 1: |
1519 | a8083063 | Iustin Pop | # only one child, let's recurse on it
|
1520 | a8083063 | Iustin Pop | return SnapshotBlockDevice(disk.children[0]) |
1521 | a8083063 | Iustin Pop | else:
|
1522 | a8083063 | Iustin Pop | # more than one child, choose one that matches
|
1523 | a8083063 | Iustin Pop | for child in disk.children: |
1524 | a8083063 | Iustin Pop | if child.size == disk.size:
|
1525 | a8083063 | Iustin Pop | # return implies breaking the loop
|
1526 | a8083063 | Iustin Pop | return SnapshotBlockDevice(child)
|
1527 | fe96220b | Iustin Pop | elif disk.dev_type == constants.LD_LV:
|
1528 | a8083063 | Iustin Pop | r_dev = _RecursiveFindBD(disk) |
1529 | a8083063 | Iustin Pop | if r_dev is not None: |
1530 | a8083063 | Iustin Pop | # let's stay on the safe side and ask for the full size, for now
|
1531 | a8083063 | Iustin Pop | return r_dev.Snapshot(disk.size)
|
1532 | a8083063 | Iustin Pop | else:
|
1533 | a8083063 | Iustin Pop | return None |
1534 | a8083063 | Iustin Pop | else:
|
1535 | 3ecf6786 | Iustin Pop | raise errors.ProgrammerError("Cannot snapshot non-lvm block device" |
1536 | f4bc1f2c | Michael Hanselmann | " '%s' of type '%s'" %
|
1537 | 3ecf6786 | Iustin Pop | (disk.unique_id, disk.dev_type)) |
1538 | a8083063 | Iustin Pop | |
1539 | a8083063 | Iustin Pop | |
1540 | 74c47259 | Iustin Pop | def ExportSnapshot(disk, dest_node, instance, cluster_name, idx): |
1541 | a8083063 | Iustin Pop | """Export a block device snapshot to a remote node.
|
1542 | a8083063 | Iustin Pop |
|
1543 | 74c47259 | Iustin Pop | @type disk: L{objects.Disk}
|
1544 | 74c47259 | Iustin Pop | @param disk: the description of the disk to export
|
1545 | 74c47259 | Iustin Pop | @type dest_node: str
|
1546 | 74c47259 | Iustin Pop | @param dest_node: the destination node to export to
|
1547 | 74c47259 | Iustin Pop | @type instance: L{objects.Instance}
|
1548 | 74c47259 | Iustin Pop | @param instance: the instance object to whom the disk belongs
|
1549 | 74c47259 | Iustin Pop | @type cluster_name: str
|
1550 | 74c47259 | Iustin Pop | @param cluster_name: the cluster name, needed for SSH hostalias
|
1551 | 74c47259 | Iustin Pop | @type idx: int
|
1552 | 74c47259 | Iustin Pop | @param idx: the index of the disk in the instance's disk list,
|
1553 | 74c47259 | Iustin Pop | used to export to the OS scripts environment
|
1554 | 10c2650b | Iustin Pop | @rtype: boolean
|
1555 | 74c47259 | Iustin Pop | @return: the success of the operation
|
1556 | a8083063 | Iustin Pop |
|
1557 | 098c0958 | Michael Hanselmann | """
|
1558 | 0607699d | Guido Trotter | export_env = OSEnvironment(instance) |
1559 | d324e3fc | Guido Trotter | |
1560 | a8083063 | Iustin Pop | inst_os = OSFromDisk(instance.os) |
1561 | a8083063 | Iustin Pop | export_script = inst_os.export_script |
1562 | a8083063 | Iustin Pop | |
1563 | a8083063 | Iustin Pop | logfile = "%s/exp-%s-%s-%s.log" % (constants.LOG_OS_DIR, inst_os.name,
|
1564 | a8083063 | Iustin Pop | instance.name, int(time.time()))
|
1565 | a8083063 | Iustin Pop | if not os.path.exists(constants.LOG_OS_DIR): |
1566 | a8083063 | Iustin Pop | os.mkdir(constants.LOG_OS_DIR, 0750)
|
1567 | 0607699d | Guido Trotter | real_disk = _RecursiveFindBD(disk) |
1568 | 0607699d | Guido Trotter | if real_disk is None: |
1569 | a8083063 | Iustin Pop | raise errors.BlockDeviceError("Block device '%s' is not set up" % |
1570 | a8083063 | Iustin Pop | str(disk))
|
1571 | 0607699d | Guido Trotter | real_disk.Open() |
1572 | 0607699d | Guido Trotter | |
1573 | 0607699d | Guido Trotter | export_env['EXPORT_DEVICE'] = real_disk.dev_path
|
1574 | 74c47259 | Iustin Pop | export_env['EXPORT_INDEX'] = str(idx) |
1575 | a8083063 | Iustin Pop | |
1576 | a8083063 | Iustin Pop | destdir = os.path.join(constants.EXPORT_DIR, instance.name + ".new")
|
1577 | a8083063 | Iustin Pop | destfile = disk.physical_id[1]
|
1578 | a8083063 | Iustin Pop | |
1579 | a8083063 | Iustin Pop | # the target command is built out of three individual commands,
|
1580 | a8083063 | Iustin Pop | # which are joined by pipes; we check each individual command for
|
1581 | a8083063 | Iustin Pop | # valid parameters
|
1582 | 0607699d | Guido Trotter | expcmd = utils.BuildShellCmd("cd %s; %s 2>%s", inst_os.path,
|
1583 | 0607699d | Guido Trotter | export_script, logfile) |
1584 | a8083063 | Iustin Pop | |
1585 | a8083063 | Iustin Pop | comprcmd = "gzip"
|
1586 | a8083063 | Iustin Pop | |
1587 | 72f0f7fd | Iustin Pop | destcmd = utils.BuildShellCmd("mkdir -p %s && cat > %s/%s",
|
1588 | 00003458 | Guido Trotter | destdir, destdir, destfile) |
1589 | 62c9ec92 | Iustin Pop | remotecmd = _GetSshRunner(cluster_name).BuildCmd(dest_node, |
1590 | 62c9ec92 | Iustin Pop | constants.GANETI_RUNAS, |
1591 | 62c9ec92 | Iustin Pop | destcmd) |
1592 | a8083063 | Iustin Pop | |
1593 | a8083063 | Iustin Pop | # all commands have been checked, so we're safe to combine them
|
1594 | 72f0f7fd | Iustin Pop | command = '|'.join([expcmd, comprcmd, utils.ShellQuoteArgs(remotecmd)])
|
1595 | a8083063 | Iustin Pop | |
1596 | 0607699d | Guido Trotter | result = utils.RunCmd(command, env=export_env) |
1597 | a8083063 | Iustin Pop | |
1598 | a8083063 | Iustin Pop | if result.failed:
|
1599 | 18682bca | Iustin Pop | logging.error("os snapshot export command '%s' returned error: %s"
|
1600 | 18682bca | Iustin Pop | " output: %s", command, result.fail_reason, result.output)
|
1601 | a8083063 | Iustin Pop | return False |
1602 | a8083063 | Iustin Pop | |
1603 | a8083063 | Iustin Pop | return True |
1604 | a8083063 | Iustin Pop | |
1605 | a8083063 | Iustin Pop | |
1606 | a8083063 | Iustin Pop | def FinalizeExport(instance, snap_disks): |
1607 | a8083063 | Iustin Pop | """Write out the export configuration information.
|
1608 | a8083063 | Iustin Pop |
|
1609 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
1610 | 10c2650b | Iustin Pop | @param instance: the instance which we export, used for
|
1611 | 10c2650b | Iustin Pop | saving configuration
|
1612 | 10c2650b | Iustin Pop | @type snap_disks: list of L{objects.Disk}
|
1613 | 10c2650b | Iustin Pop | @param snap_disks: list of snapshot block devices, which
|
1614 | 10c2650b | Iustin Pop | will be used to get the actual name of the dump file
|
1615 | a8083063 | Iustin Pop |
|
1616 | 10c2650b | Iustin Pop | @rtype: boolean
|
1617 | 10c2650b | Iustin Pop | @return: the success of the operation
|
1618 | a8083063 | Iustin Pop |
|
1619 | 098c0958 | Michael Hanselmann | """
|
1620 | a8083063 | Iustin Pop | destdir = os.path.join(constants.EXPORT_DIR, instance.name + ".new")
|
1621 | a8083063 | Iustin Pop | finaldestdir = os.path.join(constants.EXPORT_DIR, instance.name) |
1622 | a8083063 | Iustin Pop | |
1623 | a8083063 | Iustin Pop | config = objects.SerializableConfigParser() |
1624 | a8083063 | Iustin Pop | |
1625 | a8083063 | Iustin Pop | config.add_section(constants.INISECT_EXP) |
1626 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'version', '0') |
1627 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'timestamp', '%d' % int(time.time())) |
1628 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'source', instance.primary_node)
|
1629 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'os', instance.os)
|
1630 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'compression', 'gzip') |
1631 | a8083063 | Iustin Pop | |
1632 | a8083063 | Iustin Pop | config.add_section(constants.INISECT_INS) |
1633 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'name', instance.name)
|
1634 | 51de46bf | Iustin Pop | config.set(constants.INISECT_INS, 'memory', '%d' % |
1635 | 51de46bf | Iustin Pop | instance.beparams[constants.BE_MEMORY]) |
1636 | 51de46bf | Iustin Pop | config.set(constants.INISECT_INS, 'vcpus', '%d' % |
1637 | 51de46bf | Iustin Pop | instance.beparams[constants.BE_VCPUS]) |
1638 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'disk_template', instance.disk_template)
|
1639 | 66f93869 | Manuel Franceschini | |
1640 | 95268cc3 | Iustin Pop | nic_total = 0
|
1641 | a8083063 | Iustin Pop | for nic_count, nic in enumerate(instance.nics): |
1642 | 95268cc3 | Iustin Pop | nic_total += 1
|
1643 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'nic%d_mac' %
|
1644 | a8083063 | Iustin Pop | nic_count, '%s' % nic.mac)
|
1645 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'nic%d_ip' % nic_count, '%s' % nic.ip) |
1646 | 38206f3c | Iustin Pop | config.set(constants.INISECT_INS, 'nic%d_bridge' % nic_count,
|
1647 | 38206f3c | Iustin Pop | '%s' % nic.bridge)
|
1648 | a8083063 | Iustin Pop | # TODO: redundant: on load can read nics until it doesn't exist
|
1649 | 95268cc3 | Iustin Pop | config.set(constants.INISECT_INS, 'nic_count' , '%d' % nic_total) |
1650 | a8083063 | Iustin Pop | |
1651 | 726d7d68 | Iustin Pop | disk_total = 0
|
1652 | a8083063 | Iustin Pop | for disk_count, disk in enumerate(snap_disks): |
1653 | 19d7f90a | Guido Trotter | if disk:
|
1654 | 726d7d68 | Iustin Pop | disk_total += 1
|
1655 | 19d7f90a | Guido Trotter | config.set(constants.INISECT_INS, 'disk%d_ivname' % disk_count,
|
1656 | 19d7f90a | Guido Trotter | ('%s' % disk.iv_name))
|
1657 | 19d7f90a | Guido Trotter | config.set(constants.INISECT_INS, 'disk%d_dump' % disk_count,
|
1658 | 19d7f90a | Guido Trotter | ('%s' % disk.physical_id[1])) |
1659 | 19d7f90a | Guido Trotter | config.set(constants.INISECT_INS, 'disk%d_size' % disk_count,
|
1660 | 19d7f90a | Guido Trotter | ('%d' % disk.size))
|
1661 | a8083063 | Iustin Pop | |
1662 | 726d7d68 | Iustin Pop | config.set(constants.INISECT_INS, 'disk_count' , '%d' % disk_total) |
1663 | a8083063 | Iustin Pop | |
1664 | 726d7d68 | Iustin Pop | utils.WriteFile(os.path.join(destdir, constants.EXPORT_CONF_FILE), |
1665 | 726d7d68 | Iustin Pop | data=config.Dumps()) |
1666 | a8083063 | Iustin Pop | shutil.rmtree(finaldestdir, True)
|
1667 | a8083063 | Iustin Pop | shutil.move(destdir, finaldestdir) |
1668 | a8083063 | Iustin Pop | |
1669 | a8083063 | Iustin Pop | return True |
1670 | a8083063 | Iustin Pop | |
1671 | a8083063 | Iustin Pop | |
1672 | a8083063 | Iustin Pop | def ExportInfo(dest): |
1673 | a8083063 | Iustin Pop | """Get export configuration information.
|
1674 | a8083063 | Iustin Pop |
|
1675 | 10c2650b | Iustin Pop | @type dest: str
|
1676 | 10c2650b | Iustin Pop | @param dest: directory containing the export
|
1677 | a8083063 | Iustin Pop |
|
1678 | 10c2650b | Iustin Pop | @rtype: L{objects.SerializableConfigParser}
|
1679 | 10c2650b | Iustin Pop | @return: a serializable config file containing the
|
1680 | 10c2650b | Iustin Pop | export info
|
1681 | a8083063 | Iustin Pop |
|
1682 | a8083063 | Iustin Pop | """
|
1683 | a8083063 | Iustin Pop | cff = os.path.join(dest, constants.EXPORT_CONF_FILE) |
1684 | a8083063 | Iustin Pop | |
1685 | a8083063 | Iustin Pop | config = objects.SerializableConfigParser() |
1686 | a8083063 | Iustin Pop | config.read(cff) |
1687 | a8083063 | Iustin Pop | |
1688 | a8083063 | Iustin Pop | if (not config.has_section(constants.INISECT_EXP) or |
1689 | a8083063 | Iustin Pop | not config.has_section(constants.INISECT_INS)):
|
1690 | a8083063 | Iustin Pop | return None |
1691 | a8083063 | Iustin Pop | |
1692 | a8083063 | Iustin Pop | return config
|
1693 | a8083063 | Iustin Pop | |
1694 | a8083063 | Iustin Pop | |
1695 | 6c0af70e | Guido Trotter | def ImportOSIntoInstance(instance, src_node, src_images, cluster_name): |
1696 | a8083063 | Iustin Pop | """Import an os image into an instance.
|
1697 | a8083063 | Iustin Pop |
|
1698 | b1206984 | Iustin Pop | @type instance: L{objects.Instance}
|
1699 | 6c0af70e | Guido Trotter | @param instance: instance to import the disks into
|
1700 | 6c0af70e | Guido Trotter | @type src_node: string
|
1701 | 6c0af70e | Guido Trotter | @param src_node: source node for the disk images
|
1702 | 6c0af70e | Guido Trotter | @type src_images: list of string
|
1703 | 6c0af70e | Guido Trotter | @param src_images: absolute paths of the disk images
|
1704 | 6c0af70e | Guido Trotter | @rtype: list of boolean
|
1705 | 6c0af70e | Guido Trotter | @return: each boolean represent the success of importing the n-th disk
|
1706 | a8083063 | Iustin Pop |
|
1707 | a8083063 | Iustin Pop | """
|
1708 | 6c0af70e | Guido Trotter | import_env = OSEnvironment(instance) |
1709 | a8083063 | Iustin Pop | inst_os = OSFromDisk(instance.os) |
1710 | a8083063 | Iustin Pop | import_script = inst_os.import_script |
1711 | a8083063 | Iustin Pop | |
1712 | a8083063 | Iustin Pop | logfile = "%s/import-%s-%s-%s.log" % (constants.LOG_OS_DIR, instance.os,
|
1713 | a8083063 | Iustin Pop | instance.name, int(time.time()))
|
1714 | a8083063 | Iustin Pop | if not os.path.exists(constants.LOG_OS_DIR): |
1715 | a8083063 | Iustin Pop | os.mkdir(constants.LOG_OS_DIR, 0750)
|
1716 | a8083063 | Iustin Pop | |
1717 | a8083063 | Iustin Pop | comprcmd = "gunzip"
|
1718 | d868edb4 | Iustin Pop | impcmd = utils.BuildShellCmd("(cd %s; %s >%s 2>&1)", inst_os.path,
|
1719 | d868edb4 | Iustin Pop | import_script, logfile) |
1720 | a8083063 | Iustin Pop | |
1721 | 6c0af70e | Guido Trotter | final_result = [] |
1722 | 6c0af70e | Guido Trotter | for idx, image in enumerate(src_images): |
1723 | 6c0af70e | Guido Trotter | if image:
|
1724 | 6c0af70e | Guido Trotter | destcmd = utils.BuildShellCmd('cat %s', image)
|
1725 | 6c0af70e | Guido Trotter | remotecmd = _GetSshRunner(cluster_name).BuildCmd(src_node, |
1726 | 6c0af70e | Guido Trotter | constants.GANETI_RUNAS, |
1727 | 6c0af70e | Guido Trotter | destcmd) |
1728 | 6c0af70e | Guido Trotter | command = '|'.join([utils.ShellQuoteArgs(remotecmd), comprcmd, impcmd])
|
1729 | 6c0af70e | Guido Trotter | import_env['IMPORT_DEVICE'] = import_env['DISK_%d_PATH' % idx] |
1730 | 74c47259 | Iustin Pop | import_env['IMPORT_INDEX'] = str(idx) |
1731 | 6c0af70e | Guido Trotter | result = utils.RunCmd(command, env=import_env) |
1732 | 6c0af70e | Guido Trotter | if result.failed:
|
1733 | 726d7d68 | Iustin Pop | logging.error("Disk import command '%s' returned error: %s"
|
1734 | 726d7d68 | Iustin Pop | " output: %s", command, result.fail_reason,
|
1735 | 726d7d68 | Iustin Pop | result.output) |
1736 | 6c0af70e | Guido Trotter | final_result.append(False)
|
1737 | 6c0af70e | Guido Trotter | else:
|
1738 | 6c0af70e | Guido Trotter | final_result.append(True)
|
1739 | 6c0af70e | Guido Trotter | else:
|
1740 | 6c0af70e | Guido Trotter | final_result.append(True)
|
1741 | a8083063 | Iustin Pop | |
1742 | 6c0af70e | Guido Trotter | return final_result
|
1743 | a8083063 | Iustin Pop | |
1744 | a8083063 | Iustin Pop | |
1745 | a8083063 | Iustin Pop | def ListExports(): |
1746 | a8083063 | Iustin Pop | """Return a list of exports currently available on this machine.
|
1747 | 098c0958 | Michael Hanselmann |
|
1748 | 10c2650b | Iustin Pop | @rtype: list
|
1749 | 10c2650b | Iustin Pop | @return: list of the exports
|
1750 | 10c2650b | Iustin Pop |
|
1751 | a8083063 | Iustin Pop | """
|
1752 | a8083063 | Iustin Pop | if os.path.isdir(constants.EXPORT_DIR):
|
1753 | eedbda4b | Michael Hanselmann | return utils.ListVisibleFiles(constants.EXPORT_DIR)
|
1754 | a8083063 | Iustin Pop | else:
|
1755 | a8083063 | Iustin Pop | return []
|
1756 | a8083063 | Iustin Pop | |
1757 | a8083063 | Iustin Pop | |
1758 | a8083063 | Iustin Pop | def RemoveExport(export): |
1759 | a8083063 | Iustin Pop | """Remove an existing export from the node.
|
1760 | a8083063 | Iustin Pop |
|
1761 | 10c2650b | Iustin Pop | @type export: str
|
1762 | 10c2650b | Iustin Pop | @param export: the name of the export to remove
|
1763 | 10c2650b | Iustin Pop | @rtype: boolean
|
1764 | 10c2650b | Iustin Pop | @return: the success of the operation
|
1765 | a8083063 | Iustin Pop |
|
1766 | 098c0958 | Michael Hanselmann | """
|
1767 | a8083063 | Iustin Pop | target = os.path.join(constants.EXPORT_DIR, export) |
1768 | a8083063 | Iustin Pop | |
1769 | a8083063 | Iustin Pop | shutil.rmtree(target) |
1770 | a8083063 | Iustin Pop | # TODO: catch some of the relevant exceptions and provide a pretty
|
1771 | a8083063 | Iustin Pop | # error message if rmtree fails.
|
1772 | a8083063 | Iustin Pop | |
1773 | a8083063 | Iustin Pop | return True |
1774 | a8083063 | Iustin Pop | |
1775 | a8083063 | Iustin Pop | |
1776 | f3e513ad | Iustin Pop | def RenameBlockDevices(devlist): |
1777 | f3e513ad | Iustin Pop | """Rename a list of block devices.
|
1778 | f3e513ad | Iustin Pop |
|
1779 | 10c2650b | Iustin Pop | @type devlist: list of tuples
|
1780 | 10c2650b | Iustin Pop | @param devlist: list of tuples of the form (disk,
|
1781 | 10c2650b | Iustin Pop | new_logical_id, new_physical_id); disk is an
|
1782 | 10c2650b | Iustin Pop | L{objects.Disk} object describing the current disk,
|
1783 | 10c2650b | Iustin Pop | and new logical_id/physical_id is the name we
|
1784 | 10c2650b | Iustin Pop | rename it to
|
1785 | 10c2650b | Iustin Pop | @rtype: boolean
|
1786 | 10c2650b | Iustin Pop | @return: True if all renames succeeded, False otherwise
|
1787 | f3e513ad | Iustin Pop |
|
1788 | f3e513ad | Iustin Pop | """
|
1789 | f3e513ad | Iustin Pop | result = True
|
1790 | f3e513ad | Iustin Pop | for disk, unique_id in devlist: |
1791 | f3e513ad | Iustin Pop | dev = _RecursiveFindBD(disk) |
1792 | f3e513ad | Iustin Pop | if dev is None: |
1793 | f3e513ad | Iustin Pop | result = False
|
1794 | f3e513ad | Iustin Pop | continue
|
1795 | f3e513ad | Iustin Pop | try:
|
1796 | 3f78eef2 | Iustin Pop | old_rpath = dev.dev_path |
1797 | f3e513ad | Iustin Pop | dev.Rename(unique_id) |
1798 | 3f78eef2 | Iustin Pop | new_rpath = dev.dev_path |
1799 | 3f78eef2 | Iustin Pop | if old_rpath != new_rpath:
|
1800 | 3f78eef2 | Iustin Pop | DevCacheManager.RemoveCache(old_rpath) |
1801 | 3f78eef2 | Iustin Pop | # FIXME: we should add the new cache information here, like:
|
1802 | 3f78eef2 | Iustin Pop | # DevCacheManager.UpdateCache(new_rpath, owner, ...)
|
1803 | 3f78eef2 | Iustin Pop | # but we don't have the owner here - maybe parse from existing
|
1804 | 3f78eef2 | Iustin Pop | # cache? for now, we only lose lvm data when we rename, which
|
1805 | 3f78eef2 | Iustin Pop | # is less critical than DRBD or MD
|
1806 | f3e513ad | Iustin Pop | except errors.BlockDeviceError, err:
|
1807 | 18682bca | Iustin Pop | logging.exception("Can't rename device '%s' to '%s'", dev, unique_id)
|
1808 | f3e513ad | Iustin Pop | result = False
|
1809 | f3e513ad | Iustin Pop | return result
|
1810 | f3e513ad | Iustin Pop | |
1811 | f3e513ad | Iustin Pop | |
1812 | 778b75bb | Manuel Franceschini | def _TransformFileStorageDir(file_storage_dir): |
1813 | 778b75bb | Manuel Franceschini | """Checks whether given file_storage_dir is valid.
|
1814 | 778b75bb | Manuel Franceschini |
|
1815 | 778b75bb | Manuel Franceschini | Checks wheter the given file_storage_dir is within the cluster-wide
|
1816 | 778b75bb | Manuel Franceschini | default file_storage_dir stored in SimpleStore. Only paths under that
|
1817 | 778b75bb | Manuel Franceschini | directory are allowed.
|
1818 | 778b75bb | Manuel Franceschini |
|
1819 | b1206984 | Iustin Pop | @type file_storage_dir: str
|
1820 | b1206984 | Iustin Pop | @param file_storage_dir: the path to check
|
1821 | d61cbe76 | Iustin Pop |
|
1822 | b1206984 | Iustin Pop | @return: the normalized path if valid, None otherwise
|
1823 | 778b75bb | Manuel Franceschini |
|
1824 | 778b75bb | Manuel Franceschini | """
|
1825 | c657dcc9 | Michael Hanselmann | cfg = _GetConfig() |
1826 | 778b75bb | Manuel Franceschini | file_storage_dir = os.path.normpath(file_storage_dir) |
1827 | c657dcc9 | Michael Hanselmann | base_file_storage_dir = cfg.GetFileStorageDir() |
1828 | 778b75bb | Manuel Franceschini | if (not os.path.commonprefix([file_storage_dir, base_file_storage_dir]) == |
1829 | 778b75bb | Manuel Franceschini | base_file_storage_dir): |
1830 | 18682bca | Iustin Pop | logging.error("file storage directory '%s' is not under base file"
|
1831 | 18682bca | Iustin Pop | " storage directory '%s'",
|
1832 | 18682bca | Iustin Pop | file_storage_dir, base_file_storage_dir) |
1833 | 778b75bb | Manuel Franceschini | return None |
1834 | 778b75bb | Manuel Franceschini | return file_storage_dir
|
1835 | 778b75bb | Manuel Franceschini | |
1836 | 778b75bb | Manuel Franceschini | |
1837 | 778b75bb | Manuel Franceschini | def CreateFileStorageDir(file_storage_dir): |
1838 | 778b75bb | Manuel Franceschini | """Create file storage directory.
|
1839 | 778b75bb | Manuel Franceschini |
|
1840 | b1206984 | Iustin Pop | @type file_storage_dir: str
|
1841 | b1206984 | Iustin Pop | @param file_storage_dir: directory to create
|
1842 | 778b75bb | Manuel Franceschini |
|
1843 | b1206984 | Iustin Pop | @rtype: tuple
|
1844 | b1206984 | Iustin Pop | @return: tuple with first element a boolean indicating wheter dir
|
1845 | b1206984 | Iustin Pop | creation was successful or not
|
1846 | 778b75bb | Manuel Franceschini |
|
1847 | 778b75bb | Manuel Franceschini | """
|
1848 | 778b75bb | Manuel Franceschini | file_storage_dir = _TransformFileStorageDir(file_storage_dir) |
1849 | 778b75bb | Manuel Franceschini | result = True,
|
1850 | 778b75bb | Manuel Franceschini | if not file_storage_dir: |
1851 | 778b75bb | Manuel Franceschini | result = False,
|
1852 | 778b75bb | Manuel Franceschini | else:
|
1853 | 778b75bb | Manuel Franceschini | if os.path.exists(file_storage_dir):
|
1854 | 778b75bb | Manuel Franceschini | if not os.path.isdir(file_storage_dir): |
1855 | 18682bca | Iustin Pop | logging.error("'%s' is not a directory", file_storage_dir)
|
1856 | 778b75bb | Manuel Franceschini | result = False,
|
1857 | 778b75bb | Manuel Franceschini | else:
|
1858 | 778b75bb | Manuel Franceschini | try:
|
1859 | 778b75bb | Manuel Franceschini | os.makedirs(file_storage_dir, 0750)
|
1860 | 778b75bb | Manuel Franceschini | except OSError, err: |
1861 | 18682bca | Iustin Pop | logging.error("Cannot create file storage directory '%s': %s",
|
1862 | 18682bca | Iustin Pop | file_storage_dir, err) |
1863 | 778b75bb | Manuel Franceschini | result = False,
|
1864 | 778b75bb | Manuel Franceschini | return result
|
1865 | 778b75bb | Manuel Franceschini | |
1866 | 778b75bb | Manuel Franceschini | |
1867 | 778b75bb | Manuel Franceschini | def RemoveFileStorageDir(file_storage_dir): |
1868 | 778b75bb | Manuel Franceschini | """Remove file storage directory.
|
1869 | 778b75bb | Manuel Franceschini |
|
1870 | 778b75bb | Manuel Franceschini | Remove it only if it's empty. If not log an error and return.
|
1871 | 778b75bb | Manuel Franceschini |
|
1872 | 10c2650b | Iustin Pop | @type file_storage_dir: str
|
1873 | 10c2650b | Iustin Pop | @param file_storage_dir: the directory we should cleanup
|
1874 | 10c2650b | Iustin Pop | @rtype: tuple (success,)
|
1875 | 10c2650b | Iustin Pop | @return: tuple of one element, C{success}, denoting
|
1876 | 10c2650b | Iustin Pop | whether the operation was successfull
|
1877 | 778b75bb | Manuel Franceschini |
|
1878 | 778b75bb | Manuel Franceschini | """
|
1879 | 778b75bb | Manuel Franceschini | file_storage_dir = _TransformFileStorageDir(file_storage_dir) |
1880 | 778b75bb | Manuel Franceschini | result = True,
|
1881 | 778b75bb | Manuel Franceschini | if not file_storage_dir: |
1882 | 778b75bb | Manuel Franceschini | result = False,
|
1883 | 778b75bb | Manuel Franceschini | else:
|
1884 | 778b75bb | Manuel Franceschini | if os.path.exists(file_storage_dir):
|
1885 | 778b75bb | Manuel Franceschini | if not os.path.isdir(file_storage_dir): |
1886 | 18682bca | Iustin Pop | logging.error("'%s' is not a directory", file_storage_dir)
|
1887 | 778b75bb | Manuel Franceschini | result = False,
|
1888 | 778b75bb | Manuel Franceschini | # deletes dir only if empty, otherwise we want to return False
|
1889 | 778b75bb | Manuel Franceschini | try:
|
1890 | 778b75bb | Manuel Franceschini | os.rmdir(file_storage_dir) |
1891 | 778b75bb | Manuel Franceschini | except OSError, err: |
1892 | 18682bca | Iustin Pop | logging.exception("Cannot remove file storage directory '%s'",
|
1893 | 18682bca | Iustin Pop | file_storage_dir) |
1894 | 778b75bb | Manuel Franceschini | result = False,
|
1895 | 778b75bb | Manuel Franceschini | return result
|
1896 | 778b75bb | Manuel Franceschini | |
1897 | 778b75bb | Manuel Franceschini | |
1898 | 778b75bb | Manuel Franceschini | def RenameFileStorageDir(old_file_storage_dir, new_file_storage_dir): |
1899 | 778b75bb | Manuel Franceschini | """Rename the file storage directory.
|
1900 | 778b75bb | Manuel Franceschini |
|
1901 | 10c2650b | Iustin Pop | @type old_file_storage_dir: str
|
1902 | 10c2650b | Iustin Pop | @param old_file_storage_dir: the current path
|
1903 | 10c2650b | Iustin Pop | @type new_file_storage_dir: str
|
1904 | 10c2650b | Iustin Pop | @param new_file_storage_dir: the name we should rename to
|
1905 | 10c2650b | Iustin Pop | @rtype: tuple (success,)
|
1906 | 10c2650b | Iustin Pop | @return: tuple of one element, C{success}, denoting
|
1907 | 10c2650b | Iustin Pop | whether the operation was successful
|
1908 | 778b75bb | Manuel Franceschini |
|
1909 | 778b75bb | Manuel Franceschini | """
|
1910 | 778b75bb | Manuel Franceschini | old_file_storage_dir = _TransformFileStorageDir(old_file_storage_dir) |
1911 | 778b75bb | Manuel Franceschini | new_file_storage_dir = _TransformFileStorageDir(new_file_storage_dir) |
1912 | 778b75bb | Manuel Franceschini | result = True,
|
1913 | 778b75bb | Manuel Franceschini | if not old_file_storage_dir or not new_file_storage_dir: |
1914 | 778b75bb | Manuel Franceschini | result = False,
|
1915 | 778b75bb | Manuel Franceschini | else:
|
1916 | 778b75bb | Manuel Franceschini | if not os.path.exists(new_file_storage_dir): |
1917 | 778b75bb | Manuel Franceschini | if os.path.isdir(old_file_storage_dir):
|
1918 | 778b75bb | Manuel Franceschini | try:
|
1919 | 778b75bb | Manuel Franceschini | os.rename(old_file_storage_dir, new_file_storage_dir) |
1920 | 778b75bb | Manuel Franceschini | except OSError, err: |
1921 | 18682bca | Iustin Pop | logging.exception("Cannot rename '%s' to '%s'",
|
1922 | 18682bca | Iustin Pop | old_file_storage_dir, new_file_storage_dir) |
1923 | 778b75bb | Manuel Franceschini | result = False,
|
1924 | 778b75bb | Manuel Franceschini | else:
|
1925 | 18682bca | Iustin Pop | logging.error("'%s' is not a directory", old_file_storage_dir)
|
1926 | 778b75bb | Manuel Franceschini | result = False,
|
1927 | 778b75bb | Manuel Franceschini | else:
|
1928 | 778b75bb | Manuel Franceschini | if os.path.exists(old_file_storage_dir):
|
1929 | 18682bca | Iustin Pop | logging.error("Cannot rename '%s' to '%s'. Both locations exist.",
|
1930 | 18682bca | Iustin Pop | old_file_storage_dir, new_file_storage_dir) |
1931 | 778b75bb | Manuel Franceschini | result = False,
|
1932 | 778b75bb | Manuel Franceschini | return result
|
1933 | 778b75bb | Manuel Franceschini | |
1934 | 778b75bb | Manuel Franceschini | |
1935 | dc31eae3 | Michael Hanselmann | def _IsJobQueueFile(file_name): |
1936 | dc31eae3 | Michael Hanselmann | """Checks whether the given filename is in the queue directory.
|
1937 | ca52cdeb | Michael Hanselmann |
|
1938 | 10c2650b | Iustin Pop | @type file_name: str
|
1939 | 10c2650b | Iustin Pop | @param file_name: the file name we should check
|
1940 | 10c2650b | Iustin Pop | @rtype: boolean
|
1941 | 10c2650b | Iustin Pop | @return: whether the file is under the queue directory
|
1942 | 10c2650b | Iustin Pop |
|
1943 | ca52cdeb | Michael Hanselmann | """
|
1944 | ca52cdeb | Michael Hanselmann | queue_dir = os.path.normpath(constants.QUEUE_DIR) |
1945 | dc31eae3 | Michael Hanselmann | result = (os.path.commonprefix([queue_dir, file_name]) == queue_dir) |
1946 | dc31eae3 | Michael Hanselmann | |
1947 | dc31eae3 | Michael Hanselmann | if not result: |
1948 | ca52cdeb | Michael Hanselmann | logging.error("'%s' is not a file in the queue directory",
|
1949 | ca52cdeb | Michael Hanselmann | file_name) |
1950 | dc31eae3 | Michael Hanselmann | |
1951 | dc31eae3 | Michael Hanselmann | return result
|
1952 | dc31eae3 | Michael Hanselmann | |
1953 | dc31eae3 | Michael Hanselmann | |
1954 | dc31eae3 | Michael Hanselmann | def JobQueueUpdate(file_name, content): |
1955 | dc31eae3 | Michael Hanselmann | """Updates a file in the queue directory.
|
1956 | dc31eae3 | Michael Hanselmann |
|
1957 | 10c2650b | Iustin Pop | This is just a wrapper over L{utils.WriteFile}, with proper
|
1958 | 10c2650b | Iustin Pop | checking.
|
1959 | 10c2650b | Iustin Pop |
|
1960 | 10c2650b | Iustin Pop | @type file_name: str
|
1961 | 10c2650b | Iustin Pop | @param file_name: the job file name
|
1962 | 10c2650b | Iustin Pop | @type content: str
|
1963 | 10c2650b | Iustin Pop | @param content: the new job contents
|
1964 | 10c2650b | Iustin Pop | @rtype: boolean
|
1965 | 10c2650b | Iustin Pop | @return: the success of the operation
|
1966 | 10c2650b | Iustin Pop |
|
1967 | dc31eae3 | Michael Hanselmann | """
|
1968 | dc31eae3 | Michael Hanselmann | if not _IsJobQueueFile(file_name): |
1969 | ca52cdeb | Michael Hanselmann | return False |
1970 | ca52cdeb | Michael Hanselmann | |
1971 | ca52cdeb | Michael Hanselmann | # Write and replace the file atomically
|
1972 | 12bce260 | Michael Hanselmann | utils.WriteFile(file_name, data=_Decompress(content)) |
1973 | ca52cdeb | Michael Hanselmann | |
1974 | ca52cdeb | Michael Hanselmann | return True |
1975 | ca52cdeb | Michael Hanselmann | |
1976 | ca52cdeb | Michael Hanselmann | |
1977 | af5ebcb1 | Michael Hanselmann | def JobQueueRename(old, new): |
1978 | af5ebcb1 | Michael Hanselmann | """Renames a job queue file.
|
1979 | af5ebcb1 | Michael Hanselmann |
|
1980 | c41eea6e | Iustin Pop | This is just a wrapper over os.rename with proper checking.
|
1981 | 10c2650b | Iustin Pop |
|
1982 | 10c2650b | Iustin Pop | @type old: str
|
1983 | 10c2650b | Iustin Pop | @param old: the old (actual) file name
|
1984 | 10c2650b | Iustin Pop | @type new: str
|
1985 | 10c2650b | Iustin Pop | @param new: the desired file name
|
1986 | 10c2650b | Iustin Pop | @rtype: boolean
|
1987 | 10c2650b | Iustin Pop | @return: the success of the operation
|
1988 | 10c2650b | Iustin Pop |
|
1989 | af5ebcb1 | Michael Hanselmann | """
|
1990 | af5ebcb1 | Michael Hanselmann | if not (_IsJobQueueFile(old) and _IsJobQueueFile(new)): |
1991 | af5ebcb1 | Michael Hanselmann | return False |
1992 | af5ebcb1 | Michael Hanselmann | |
1993 | af5ebcb1 | Michael Hanselmann | os.rename(old, new) |
1994 | af5ebcb1 | Michael Hanselmann | |
1995 | af5ebcb1 | Michael Hanselmann | return True |
1996 | af5ebcb1 | Michael Hanselmann | |
1997 | af5ebcb1 | Michael Hanselmann | |
1998 | 5d672980 | Iustin Pop | def JobQueueSetDrainFlag(drain_flag): |
1999 | 5d672980 | Iustin Pop | """Set the drain flag for the queue.
|
2000 | 5d672980 | Iustin Pop |
|
2001 | 5d672980 | Iustin Pop | This will set or unset the queue drain flag.
|
2002 | 5d672980 | Iustin Pop |
|
2003 | 10c2650b | Iustin Pop | @type drain_flag: boolean
|
2004 | 5d672980 | Iustin Pop | @param drain_flag: if True, will set the drain flag, otherwise reset it.
|
2005 | 10c2650b | Iustin Pop | @rtype: boolean
|
2006 | 10c2650b | Iustin Pop | @return: always True
|
2007 | 10c2650b | Iustin Pop | @warning: the function always returns True
|
2008 | 5d672980 | Iustin Pop |
|
2009 | 5d672980 | Iustin Pop | """
|
2010 | 5d672980 | Iustin Pop | if drain_flag:
|
2011 | 5d672980 | Iustin Pop | utils.WriteFile(constants.JOB_QUEUE_DRAIN_FILE, data="", close=True) |
2012 | 5d672980 | Iustin Pop | else:
|
2013 | 5d672980 | Iustin Pop | utils.RemoveFile(constants.JOB_QUEUE_DRAIN_FILE) |
2014 | 5d672980 | Iustin Pop | |
2015 | 5d672980 | Iustin Pop | return True |
2016 | 5d672980 | Iustin Pop | |
2017 | 5d672980 | Iustin Pop | |
2018 | d61cbe76 | Iustin Pop | def CloseBlockDevices(disks): |
2019 | d61cbe76 | Iustin Pop | """Closes the given block devices.
|
2020 | d61cbe76 | Iustin Pop |
|
2021 | 10c2650b | Iustin Pop | This means they will be switched to secondary mode (in case of
|
2022 | 10c2650b | Iustin Pop | DRBD).
|
2023 | 10c2650b | Iustin Pop |
|
2024 | 10c2650b | Iustin Pop | @type disks: list of L{objects.Disk}
|
2025 | 10c2650b | Iustin Pop | @param disks: the list of disks to be closed
|
2026 | 10c2650b | Iustin Pop | @rtype: tuple (success, message)
|
2027 | 10c2650b | Iustin Pop | @return: a tuple of success and message, where success
|
2028 | 10c2650b | Iustin Pop | indicates the succes of the operation, and message
|
2029 | 10c2650b | Iustin Pop | which will contain the error details in case we
|
2030 | 10c2650b | Iustin Pop | failed
|
2031 | d61cbe76 | Iustin Pop |
|
2032 | d61cbe76 | Iustin Pop | """
|
2033 | d61cbe76 | Iustin Pop | bdevs = [] |
2034 | d61cbe76 | Iustin Pop | for cf in disks: |
2035 | d61cbe76 | Iustin Pop | rd = _RecursiveFindBD(cf) |
2036 | d61cbe76 | Iustin Pop | if rd is None: |
2037 | d61cbe76 | Iustin Pop | return (False, "Can't find device %s" % cf) |
2038 | d61cbe76 | Iustin Pop | bdevs.append(rd) |
2039 | d61cbe76 | Iustin Pop | |
2040 | d61cbe76 | Iustin Pop | msg = [] |
2041 | d61cbe76 | Iustin Pop | for rd in bdevs: |
2042 | d61cbe76 | Iustin Pop | try:
|
2043 | d61cbe76 | Iustin Pop | rd.Close() |
2044 | d61cbe76 | Iustin Pop | except errors.BlockDeviceError, err:
|
2045 | d61cbe76 | Iustin Pop | msg.append(str(err))
|
2046 | d61cbe76 | Iustin Pop | if msg:
|
2047 | d61cbe76 | Iustin Pop | return (False, "Can't make devices secondary: %s" % ",".join(msg)) |
2048 | d61cbe76 | Iustin Pop | else:
|
2049 | d61cbe76 | Iustin Pop | return (True, "All devices secondary") |
2050 | d61cbe76 | Iustin Pop | |
2051 | d61cbe76 | Iustin Pop | |
2052 | 6217e295 | Iustin Pop | def ValidateHVParams(hvname, hvparams): |
2053 | 6217e295 | Iustin Pop | """Validates the given hypervisor parameters.
|
2054 | 6217e295 | Iustin Pop |
|
2055 | 6217e295 | Iustin Pop | @type hvname: string
|
2056 | 6217e295 | Iustin Pop | @param hvname: the hypervisor name
|
2057 | 6217e295 | Iustin Pop | @type hvparams: dict
|
2058 | 6217e295 | Iustin Pop | @param hvparams: the hypervisor parameters to be validated
|
2059 | 10c2650b | Iustin Pop | @rtype: tuple (success, message)
|
2060 | 10c2650b | Iustin Pop | @return: a tuple of success and message, where success
|
2061 | 10c2650b | Iustin Pop | indicates the succes of the operation, and message
|
2062 | 10c2650b | Iustin Pop | which will contain the error details in case we
|
2063 | 10c2650b | Iustin Pop | failed
|
2064 | 6217e295 | Iustin Pop |
|
2065 | 6217e295 | Iustin Pop | """
|
2066 | 6217e295 | Iustin Pop | try:
|
2067 | 6217e295 | Iustin Pop | hv_type = hypervisor.GetHypervisor(hvname) |
2068 | 6217e295 | Iustin Pop | hv_type.ValidateParameters(hvparams) |
2069 | 6217e295 | Iustin Pop | return (True, "Validation passed") |
2070 | 6217e295 | Iustin Pop | except errors.HypervisorError, err:
|
2071 | 6217e295 | Iustin Pop | return (False, str(err)) |
2072 | 6217e295 | Iustin Pop | |
2073 | 6217e295 | Iustin Pop | |
2074 | 56aa9fd5 | Iustin Pop | def DemoteFromMC(): |
2075 | 56aa9fd5 | Iustin Pop | """Demotes the current node from master candidate role.
|
2076 | 56aa9fd5 | Iustin Pop |
|
2077 | 56aa9fd5 | Iustin Pop | """
|
2078 | 56aa9fd5 | Iustin Pop | # try to ensure we're not the master by mistake
|
2079 | 56aa9fd5 | Iustin Pop | master, myself = ssconf.GetMasterAndMyself() |
2080 | 56aa9fd5 | Iustin Pop | if master == myself:
|
2081 | 56aa9fd5 | Iustin Pop | return (False, "ssconf status shows I'm the master node, will not demote") |
2082 | 56aa9fd5 | Iustin Pop | pid_file = utils.DaemonPidFileName(constants.MASTERD_PID) |
2083 | 56aa9fd5 | Iustin Pop | if utils.IsProcessAlive(utils.ReadPidFile(pid_file)):
|
2084 | 56aa9fd5 | Iustin Pop | return (False, "The master daemon is running, will not demote") |
2085 | 56aa9fd5 | Iustin Pop | try:
|
2086 | 56aa9fd5 | Iustin Pop | utils.CreateBackup(constants.CLUSTER_CONF_FILE) |
2087 | 56aa9fd5 | Iustin Pop | except EnvironmentError, err: |
2088 | 56aa9fd5 | Iustin Pop | if err.errno != errno.ENOENT:
|
2089 | 56aa9fd5 | Iustin Pop | return (False, "Error while backing up cluster file: %s" % str(err)) |
2090 | 56aa9fd5 | Iustin Pop | utils.RemoveFile(constants.CLUSTER_CONF_FILE) |
2091 | 56aa9fd5 | Iustin Pop | return (True, "Done") |
2092 | 56aa9fd5 | Iustin Pop | |
2093 | 56aa9fd5 | Iustin Pop | |
2094 | a8083063 | Iustin Pop | class HooksRunner(object): |
2095 | a8083063 | Iustin Pop | """Hook runner.
|
2096 | a8083063 | Iustin Pop |
|
2097 | 10c2650b | Iustin Pop | This class is instantiated on the node side (ganeti-noded) and not
|
2098 | 10c2650b | Iustin Pop | on the master side.
|
2099 | a8083063 | Iustin Pop |
|
2100 | a8083063 | Iustin Pop | """
|
2101 | a8083063 | Iustin Pop | RE_MASK = re.compile("^[a-zA-Z0-9_-]+$")
|
2102 | a8083063 | Iustin Pop | |
2103 | a8083063 | Iustin Pop | def __init__(self, hooks_base_dir=None): |
2104 | a8083063 | Iustin Pop | """Constructor for hooks runner.
|
2105 | a8083063 | Iustin Pop |
|
2106 | 10c2650b | Iustin Pop | @type hooks_base_dir: str or None
|
2107 | 10c2650b | Iustin Pop | @param hooks_base_dir: if not None, this overrides the
|
2108 | 10c2650b | Iustin Pop | L{constants.HOOKS_BASE_DIR} (useful for unittests)
|
2109 | a8083063 | Iustin Pop |
|
2110 | a8083063 | Iustin Pop | """
|
2111 | a8083063 | Iustin Pop | if hooks_base_dir is None: |
2112 | a8083063 | Iustin Pop | hooks_base_dir = constants.HOOKS_BASE_DIR |
2113 | a8083063 | Iustin Pop | self._BASE_DIR = hooks_base_dir
|
2114 | a8083063 | Iustin Pop | |
2115 | a8083063 | Iustin Pop | @staticmethod
|
2116 | a8083063 | Iustin Pop | def ExecHook(script, env): |
2117 | a8083063 | Iustin Pop | """Exec one hook script.
|
2118 | a8083063 | Iustin Pop |
|
2119 | 10c2650b | Iustin Pop | @type script: str
|
2120 | 10c2650b | Iustin Pop | @param script: the full path to the script
|
2121 | 10c2650b | Iustin Pop | @type env: dict
|
2122 | 10c2650b | Iustin Pop | @param env: the environment with which to exec the script
|
2123 | 10c2650b | Iustin Pop | @rtype: tuple (success, message)
|
2124 | 10c2650b | Iustin Pop | @return: a tuple of success and message, where success
|
2125 | 10c2650b | Iustin Pop | indicates the succes of the operation, and message
|
2126 | 10c2650b | Iustin Pop | which will contain the error details in case we
|
2127 | 10c2650b | Iustin Pop | failed
|
2128 | a8083063 | Iustin Pop |
|
2129 | a8083063 | Iustin Pop | """
|
2130 | a8083063 | Iustin Pop | # exec the process using subprocess and log the output
|
2131 | a8083063 | Iustin Pop | fdstdin = None
|
2132 | a8083063 | Iustin Pop | try:
|
2133 | a8083063 | Iustin Pop | fdstdin = open("/dev/null", "r") |
2134 | a8083063 | Iustin Pop | child = subprocess.Popen([script], stdin=fdstdin, stdout=subprocess.PIPE, |
2135 | a8083063 | Iustin Pop | stderr=subprocess.STDOUT, close_fds=True,
|
2136 | 147af04d | Iustin Pop | shell=False, cwd="/", env=env) |
2137 | a8083063 | Iustin Pop | output = ""
|
2138 | a8083063 | Iustin Pop | try:
|
2139 | a8083063 | Iustin Pop | output = child.stdout.read(4096)
|
2140 | a8083063 | Iustin Pop | child.stdout.close() |
2141 | a8083063 | Iustin Pop | except EnvironmentError, err: |
2142 | a8083063 | Iustin Pop | output += "Hook script error: %s" % str(err) |
2143 | a8083063 | Iustin Pop | |
2144 | a8083063 | Iustin Pop | while True: |
2145 | a8083063 | Iustin Pop | try:
|
2146 | a8083063 | Iustin Pop | result = child.wait() |
2147 | a8083063 | Iustin Pop | break
|
2148 | a8083063 | Iustin Pop | except EnvironmentError, err: |
2149 | a8083063 | Iustin Pop | if err.errno == errno.EINTR:
|
2150 | a8083063 | Iustin Pop | continue
|
2151 | a8083063 | Iustin Pop | raise
|
2152 | a8083063 | Iustin Pop | finally:
|
2153 | a8083063 | Iustin Pop | # try not to leak fds
|
2154 | a8083063 | Iustin Pop | for fd in (fdstdin, ): |
2155 | a8083063 | Iustin Pop | if fd is not None: |
2156 | a8083063 | Iustin Pop | try:
|
2157 | a8083063 | Iustin Pop | fd.close() |
2158 | a8083063 | Iustin Pop | except EnvironmentError, err: |
2159 | a8083063 | Iustin Pop | # just log the error
|
2160 | 18682bca | Iustin Pop | #logging.exception("Error while closing fd %s", fd)
|
2161 | a8083063 | Iustin Pop | pass
|
2162 | a8083063 | Iustin Pop | |
2163 | a8083063 | Iustin Pop | return result == 0, output |
2164 | a8083063 | Iustin Pop | |
2165 | a8083063 | Iustin Pop | def RunHooks(self, hpath, phase, env): |
2166 | a8083063 | Iustin Pop | """Run the scripts in the hooks directory.
|
2167 | a8083063 | Iustin Pop |
|
2168 | 10c2650b | Iustin Pop | @type hpath: str
|
2169 | 10c2650b | Iustin Pop | @param hpath: the path to the hooks directory which
|
2170 | 10c2650b | Iustin Pop | holds the scripts
|
2171 | 10c2650b | Iustin Pop | @type phase: str
|
2172 | 10c2650b | Iustin Pop | @param phase: either L{constants.HOOKS_PHASE_PRE} or
|
2173 | 10c2650b | Iustin Pop | L{constants.HOOKS_PHASE_POST}
|
2174 | 10c2650b | Iustin Pop | @type env: dict
|
2175 | 10c2650b | Iustin Pop | @param env: dictionary with the environment for the hook
|
2176 | 10c2650b | Iustin Pop | @rtype: list
|
2177 | 10c2650b | Iustin Pop | @return: list of 3-element tuples:
|
2178 | 10c2650b | Iustin Pop | - script path
|
2179 | 10c2650b | Iustin Pop | - script result, either L{constants.HKR_SUCCESS} or
|
2180 | 10c2650b | Iustin Pop | L{constants.HKR_FAIL}
|
2181 | 10c2650b | Iustin Pop | - output of the script
|
2182 | 10c2650b | Iustin Pop |
|
2183 | 10c2650b | Iustin Pop | @raise errors.ProgrammerError: for invalid input
|
2184 | 10c2650b | Iustin Pop | parameters
|
2185 | a8083063 | Iustin Pop |
|
2186 | a8083063 | Iustin Pop | """
|
2187 | a8083063 | Iustin Pop | if phase == constants.HOOKS_PHASE_PRE:
|
2188 | a8083063 | Iustin Pop | suffix = "pre"
|
2189 | a8083063 | Iustin Pop | elif phase == constants.HOOKS_PHASE_POST:
|
2190 | a8083063 | Iustin Pop | suffix = "post"
|
2191 | a8083063 | Iustin Pop | else:
|
2192 | 3ecf6786 | Iustin Pop | raise errors.ProgrammerError("Unknown hooks phase: '%s'" % phase) |
2193 | a8083063 | Iustin Pop | rr = [] |
2194 | a8083063 | Iustin Pop | |
2195 | a8083063 | Iustin Pop | subdir = "%s-%s.d" % (hpath, suffix)
|
2196 | a8083063 | Iustin Pop | dir_name = "%s/%s" % (self._BASE_DIR, subdir) |
2197 | a8083063 | Iustin Pop | try:
|
2198 | eedbda4b | Michael Hanselmann | dir_contents = utils.ListVisibleFiles(dir_name) |
2199 | a8083063 | Iustin Pop | except OSError, err: |
2200 | 10c2650b | Iustin Pop | # FIXME: must log output in case of failures
|
2201 | a8083063 | Iustin Pop | return rr
|
2202 | a8083063 | Iustin Pop | |
2203 | a8083063 | Iustin Pop | # we use the standard python sort order,
|
2204 | a8083063 | Iustin Pop | # so 00name is the recommended naming scheme
|
2205 | a8083063 | Iustin Pop | dir_contents.sort() |
2206 | a8083063 | Iustin Pop | for relname in dir_contents: |
2207 | a8083063 | Iustin Pop | fname = os.path.join(dir_name, relname) |
2208 | a8083063 | Iustin Pop | if not (os.path.isfile(fname) and os.access(fname, os.X_OK) and |
2209 | a8083063 | Iustin Pop | self.RE_MASK.match(relname) is not None): |
2210 | a8083063 | Iustin Pop | rrval = constants.HKR_SKIP |
2211 | a8083063 | Iustin Pop | output = ""
|
2212 | a8083063 | Iustin Pop | else:
|
2213 | a8083063 | Iustin Pop | result, output = self.ExecHook(fname, env)
|
2214 | a8083063 | Iustin Pop | if not result: |
2215 | a8083063 | Iustin Pop | rrval = constants.HKR_FAIL |
2216 | a8083063 | Iustin Pop | else:
|
2217 | a8083063 | Iustin Pop | rrval = constants.HKR_SUCCESS |
2218 | a8083063 | Iustin Pop | rr.append(("%s/%s" % (subdir, relname), rrval, output))
|
2219 | a8083063 | Iustin Pop | |
2220 | a8083063 | Iustin Pop | return rr
|
2221 | 3f78eef2 | Iustin Pop | |
2222 | 3f78eef2 | Iustin Pop | |
2223 | 8d528b7c | Iustin Pop | class IAllocatorRunner(object): |
2224 | 8d528b7c | Iustin Pop | """IAllocator runner.
|
2225 | 8d528b7c | Iustin Pop |
|
2226 | 8d528b7c | Iustin Pop | This class is instantiated on the node side (ganeti-noded) and not on
|
2227 | 8d528b7c | Iustin Pop | the master side.
|
2228 | 8d528b7c | Iustin Pop |
|
2229 | 8d528b7c | Iustin Pop | """
|
2230 | 8d528b7c | Iustin Pop | def Run(self, name, idata): |
2231 | 8d528b7c | Iustin Pop | """Run an iallocator script.
|
2232 | 8d528b7c | Iustin Pop |
|
2233 | 10c2650b | Iustin Pop | @type name: str
|
2234 | 10c2650b | Iustin Pop | @param name: the iallocator script name
|
2235 | 10c2650b | Iustin Pop | @type idata: str
|
2236 | 10c2650b | Iustin Pop | @param idata: the allocator input data
|
2237 | 10c2650b | Iustin Pop |
|
2238 | 10c2650b | Iustin Pop | @rtype: tuple
|
2239 | 10c2650b | Iustin Pop | @return: four element tuple of:
|
2240 | 8d528b7c | Iustin Pop | - run status (one of the IARUN_ constants)
|
2241 | 8d528b7c | Iustin Pop | - stdout
|
2242 | 8d528b7c | Iustin Pop | - stderr
|
2243 | 10c2650b | Iustin Pop | - fail reason (as from L{utils.RunResult})
|
2244 | 8d528b7c | Iustin Pop |
|
2245 | 8d528b7c | Iustin Pop | """
|
2246 | 8d528b7c | Iustin Pop | alloc_script = utils.FindFile(name, constants.IALLOCATOR_SEARCH_PATH, |
2247 | 8d528b7c | Iustin Pop | os.path.isfile) |
2248 | 8d528b7c | Iustin Pop | if alloc_script is None: |
2249 | 8d528b7c | Iustin Pop | return (constants.IARUN_NOTFOUND, None, None, None) |
2250 | 8d528b7c | Iustin Pop | |
2251 | 8d528b7c | Iustin Pop | fd, fin_name = tempfile.mkstemp(prefix="ganeti-iallocator.")
|
2252 | 8d528b7c | Iustin Pop | try:
|
2253 | 8d528b7c | Iustin Pop | os.write(fd, idata) |
2254 | 8d528b7c | Iustin Pop | os.close(fd) |
2255 | 8d528b7c | Iustin Pop | result = utils.RunCmd([alloc_script, fin_name]) |
2256 | 8d528b7c | Iustin Pop | if result.failed:
|
2257 | 8d528b7c | Iustin Pop | return (constants.IARUN_FAILURE, result.stdout, result.stderr,
|
2258 | 8d528b7c | Iustin Pop | result.fail_reason) |
2259 | 8d528b7c | Iustin Pop | finally:
|
2260 | 8d528b7c | Iustin Pop | os.unlink(fin_name) |
2261 | 8d528b7c | Iustin Pop | |
2262 | 8d528b7c | Iustin Pop | return (constants.IARUN_SUCCESS, result.stdout, result.stderr, None) |
2263 | 8d528b7c | Iustin Pop | |
2264 | 8d528b7c | Iustin Pop | |
2265 | 3f78eef2 | Iustin Pop | class DevCacheManager(object): |
2266 | c99a3cc0 | Manuel Franceschini | """Simple class for managing a cache of block device information.
|
2267 | 3f78eef2 | Iustin Pop |
|
2268 | 3f78eef2 | Iustin Pop | """
|
2269 | 3f78eef2 | Iustin Pop | _DEV_PREFIX = "/dev/"
|
2270 | 3f78eef2 | Iustin Pop | _ROOT_DIR = constants.BDEV_CACHE_DIR |
2271 | 3f78eef2 | Iustin Pop | |
2272 | 3f78eef2 | Iustin Pop | @classmethod
|
2273 | 3f78eef2 | Iustin Pop | def _ConvertPath(cls, dev_path): |
2274 | 3f78eef2 | Iustin Pop | """Converts a /dev/name path to the cache file name.
|
2275 | 3f78eef2 | Iustin Pop |
|
2276 | 3f78eef2 | Iustin Pop | This replaces slashes with underscores and strips the /dev
|
2277 | 10c2650b | Iustin Pop | prefix. It then returns the full path to the cache file.
|
2278 | 10c2650b | Iustin Pop |
|
2279 | 10c2650b | Iustin Pop | @type dev_path: str
|
2280 | 10c2650b | Iustin Pop | @param dev_path: the C{/dev/} path name
|
2281 | 10c2650b | Iustin Pop | @rtype: str
|
2282 | 10c2650b | Iustin Pop | @return: the converted path name
|
2283 | 3f78eef2 | Iustin Pop |
|
2284 | 3f78eef2 | Iustin Pop | """
|
2285 | 3f78eef2 | Iustin Pop | if dev_path.startswith(cls._DEV_PREFIX):
|
2286 | 3f78eef2 | Iustin Pop | dev_path = dev_path[len(cls._DEV_PREFIX):]
|
2287 | 3f78eef2 | Iustin Pop | dev_path = dev_path.replace("/", "_") |
2288 | 3f78eef2 | Iustin Pop | fpath = "%s/bdev_%s" % (cls._ROOT_DIR, dev_path)
|
2289 | 3f78eef2 | Iustin Pop | return fpath
|
2290 | 3f78eef2 | Iustin Pop | |
2291 | 3f78eef2 | Iustin Pop | @classmethod
|
2292 | 3f78eef2 | Iustin Pop | def UpdateCache(cls, dev_path, owner, on_primary, iv_name): |
2293 | 3f78eef2 | Iustin Pop | """Updates the cache information for a given device.
|
2294 | 3f78eef2 | Iustin Pop |
|
2295 | 10c2650b | Iustin Pop | @type dev_path: str
|
2296 | 10c2650b | Iustin Pop | @param dev_path: the pathname of the device
|
2297 | 10c2650b | Iustin Pop | @type owner: str
|
2298 | 10c2650b | Iustin Pop | @param owner: the owner (instance name) of the device
|
2299 | 10c2650b | Iustin Pop | @type on_primary: bool
|
2300 | 10c2650b | Iustin Pop | @param on_primary: whether this is the primary
|
2301 | 10c2650b | Iustin Pop | node nor not
|
2302 | 10c2650b | Iustin Pop | @type iv_name: str
|
2303 | 10c2650b | Iustin Pop | @param iv_name: the instance-visible name of the
|
2304 | c41eea6e | Iustin Pop | device, as in objects.Disk.iv_name
|
2305 | 10c2650b | Iustin Pop |
|
2306 | 10c2650b | Iustin Pop | @rtype: None
|
2307 | 10c2650b | Iustin Pop |
|
2308 | 3f78eef2 | Iustin Pop | """
|
2309 | cf5a8306 | Iustin Pop | if dev_path is None: |
2310 | 18682bca | Iustin Pop | logging.error("DevCacheManager.UpdateCache got a None dev_path")
|
2311 | cf5a8306 | Iustin Pop | return
|
2312 | 3f78eef2 | Iustin Pop | fpath = cls._ConvertPath(dev_path) |
2313 | 3f78eef2 | Iustin Pop | if on_primary:
|
2314 | 3f78eef2 | Iustin Pop | state = "primary"
|
2315 | 3f78eef2 | Iustin Pop | else:
|
2316 | 3f78eef2 | Iustin Pop | state = "secondary"
|
2317 | 3f78eef2 | Iustin Pop | if iv_name is None: |
2318 | 3f78eef2 | Iustin Pop | iv_name = "not_visible"
|
2319 | 3f78eef2 | Iustin Pop | fdata = "%s %s %s\n" % (str(owner), state, iv_name) |
2320 | 3f78eef2 | Iustin Pop | try:
|
2321 | 3f78eef2 | Iustin Pop | utils.WriteFile(fpath, data=fdata) |
2322 | 3f78eef2 | Iustin Pop | except EnvironmentError, err: |
2323 | 18682bca | Iustin Pop | logging.exception("Can't update bdev cache for %s", dev_path)
|
2324 | 3f78eef2 | Iustin Pop | |
2325 | 3f78eef2 | Iustin Pop | @classmethod
|
2326 | 3f78eef2 | Iustin Pop | def RemoveCache(cls, dev_path): |
2327 | 3f78eef2 | Iustin Pop | """Remove data for a dev_path.
|
2328 | 3f78eef2 | Iustin Pop |
|
2329 | 10c2650b | Iustin Pop | This is just a wrapper over L{utils.RemoveFile} with a converted
|
2330 | 10c2650b | Iustin Pop | path name and logging.
|
2331 | 10c2650b | Iustin Pop |
|
2332 | 10c2650b | Iustin Pop | @type dev_path: str
|
2333 | 10c2650b | Iustin Pop | @param dev_path: the pathname of the device
|
2334 | 10c2650b | Iustin Pop |
|
2335 | 10c2650b | Iustin Pop | @rtype: None
|
2336 | 10c2650b | Iustin Pop |
|
2337 | 3f78eef2 | Iustin Pop | """
|
2338 | cf5a8306 | Iustin Pop | if dev_path is None: |
2339 | 18682bca | Iustin Pop | logging.error("DevCacheManager.RemoveCache got a None dev_path")
|
2340 | cf5a8306 | Iustin Pop | return
|
2341 | 3f78eef2 | Iustin Pop | fpath = cls._ConvertPath(dev_path) |
2342 | 3f78eef2 | Iustin Pop | try:
|
2343 | 3f78eef2 | Iustin Pop | utils.RemoveFile(fpath) |
2344 | 3f78eef2 | Iustin Pop | except EnvironmentError, err: |
2345 | 18682bca | Iustin Pop | logging.exception("Can't update bdev cache for %s", dev_path) |