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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 | 2cc6781a | Iustin Pop | class RPCFail(Exception): |
50 | 2cc6781a | Iustin Pop | """Class denoting RPC failure.
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51 | 2cc6781a | Iustin Pop |
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52 | 2cc6781a | Iustin Pop | Its argument is the error message.
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53 | 2cc6781a | Iustin Pop |
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54 | 2cc6781a | Iustin Pop | """
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55 | 2cc6781a | Iustin Pop | |
56 | 2cc6781a | Iustin Pop | def _Fail(msg, *args, **kwargs): |
57 | 2cc6781a | Iustin Pop | """Log an error and the raise an RPCFail exception.
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58 | 2cc6781a | Iustin Pop |
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59 | 2cc6781a | Iustin Pop | This exception is then handled specially in the ganeti daemon and
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60 | 2cc6781a | Iustin Pop | turned into a 'failed' return type. As such, this function is a
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61 | 2cc6781a | Iustin Pop | useful shortcut for logging the error and returning it to the master
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62 | 2cc6781a | Iustin Pop | daemon.
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63 | 2cc6781a | Iustin Pop |
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64 | 2cc6781a | Iustin Pop | @type msg: string
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65 | 2cc6781a | Iustin Pop | @param msg: the text of the exception
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66 | 2cc6781a | Iustin Pop | @raise RPCFail
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67 | 2cc6781a | Iustin Pop |
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68 | 2cc6781a | Iustin Pop | """
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69 | 2cc6781a | Iustin Pop | if args:
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70 | 2cc6781a | Iustin Pop | msg = msg % args |
71 | afdc3985 | Iustin Pop | if "log" not in kwargs or kwargs["log"]: # if we should log this error |
72 | afdc3985 | Iustin Pop | if "exc" in kwargs and kwargs["exc"]: |
73 | afdc3985 | Iustin Pop | logging.exception(msg) |
74 | afdc3985 | Iustin Pop | else:
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75 | afdc3985 | Iustin Pop | logging.error(msg) |
76 | 2cc6781a | Iustin Pop | raise RPCFail(msg)
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77 | 2cc6781a | Iustin Pop | |
78 | 2cc6781a | Iustin Pop | |
79 | c657dcc9 | Michael Hanselmann | def _GetConfig(): |
80 | 93384844 | Iustin Pop | """Simple wrapper to return a SimpleStore.
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81 | 10c2650b | Iustin Pop |
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82 | 93384844 | Iustin Pop | @rtype: L{ssconf.SimpleStore}
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83 | 93384844 | Iustin Pop | @return: a SimpleStore instance
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84 | 10c2650b | Iustin Pop |
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85 | 10c2650b | Iustin Pop | """
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86 | 93384844 | Iustin Pop | return ssconf.SimpleStore()
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87 | c657dcc9 | Michael Hanselmann | |
88 | c657dcc9 | Michael Hanselmann | |
89 | 62c9ec92 | Iustin Pop | def _GetSshRunner(cluster_name): |
90 | 10c2650b | Iustin Pop | """Simple wrapper to return an SshRunner.
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91 | 10c2650b | Iustin Pop |
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92 | 10c2650b | Iustin Pop | @type cluster_name: str
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93 | 10c2650b | Iustin Pop | @param cluster_name: the cluster name, which is needed
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94 | 10c2650b | Iustin Pop | by the SshRunner constructor
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95 | 10c2650b | Iustin Pop | @rtype: L{ssh.SshRunner}
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96 | 10c2650b | Iustin Pop | @return: an SshRunner instance
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97 | 10c2650b | Iustin Pop |
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98 | 10c2650b | Iustin Pop | """
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99 | 62c9ec92 | Iustin Pop | return ssh.SshRunner(cluster_name)
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100 | c92b310a | Michael Hanselmann | |
101 | c92b310a | Michael Hanselmann | |
102 | 12bce260 | Michael Hanselmann | def _Decompress(data): |
103 | 12bce260 | Michael Hanselmann | """Unpacks data compressed by the RPC client.
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104 | 12bce260 | Michael Hanselmann |
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105 | 12bce260 | Michael Hanselmann | @type data: list or tuple
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106 | 12bce260 | Michael Hanselmann | @param data: Data sent by RPC client
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107 | 12bce260 | Michael Hanselmann | @rtype: str
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108 | 12bce260 | Michael Hanselmann | @return: Decompressed data
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109 | 12bce260 | Michael Hanselmann |
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110 | 12bce260 | Michael Hanselmann | """
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111 | 52e2f66e | Michael Hanselmann | assert isinstance(data, (list, tuple)) |
112 | 12bce260 | Michael Hanselmann | assert len(data) == 2 |
113 | 12bce260 | Michael Hanselmann | (encoding, content) = data |
114 | 12bce260 | Michael Hanselmann | if encoding == constants.RPC_ENCODING_NONE:
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115 | 12bce260 | Michael Hanselmann | return content
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116 | 12bce260 | Michael Hanselmann | elif encoding == constants.RPC_ENCODING_ZLIB_BASE64:
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117 | 12bce260 | Michael Hanselmann | return zlib.decompress(base64.b64decode(content))
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118 | 12bce260 | Michael Hanselmann | else:
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119 | 12bce260 | Michael Hanselmann | raise AssertionError("Unknown data encoding") |
120 | 12bce260 | Michael Hanselmann | |
121 | 12bce260 | Michael Hanselmann | |
122 | 3bc6be5c | Iustin Pop | def _CleanDirectory(path, exclude=None): |
123 | 76ab5558 | Michael Hanselmann | """Removes all regular files in a directory.
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124 | 76ab5558 | Michael Hanselmann |
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125 | 10c2650b | Iustin Pop | @type path: str
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126 | 10c2650b | Iustin Pop | @param path: the directory to clean
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127 | 76ab5558 | Michael Hanselmann | @type exclude: list
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128 | 10c2650b | Iustin Pop | @param exclude: list of files to be excluded, defaults
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129 | 10c2650b | Iustin Pop | to the empty list
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130 | 76ab5558 | Michael Hanselmann |
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131 | 76ab5558 | Michael Hanselmann | """
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132 | 3956cee1 | Michael Hanselmann | if not os.path.isdir(path): |
133 | 3956cee1 | Michael Hanselmann | return
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134 | 3bc6be5c | Iustin Pop | if exclude is None: |
135 | 3bc6be5c | Iustin Pop | exclude = [] |
136 | 3bc6be5c | Iustin Pop | else:
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137 | 3bc6be5c | Iustin Pop | # Normalize excluded paths
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138 | 3bc6be5c | Iustin Pop | exclude = [os.path.normpath(i) for i in exclude] |
139 | 76ab5558 | Michael Hanselmann | |
140 | 3956cee1 | Michael Hanselmann | for rel_name in utils.ListVisibleFiles(path): |
141 | 76ab5558 | Michael Hanselmann | full_name = os.path.normpath(os.path.join(path, rel_name)) |
142 | 76ab5558 | Michael Hanselmann | if full_name in exclude: |
143 | 76ab5558 | Michael Hanselmann | continue
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144 | 3956cee1 | Michael Hanselmann | if os.path.isfile(full_name) and not os.path.islink(full_name): |
145 | 3956cee1 | Michael Hanselmann | utils.RemoveFile(full_name) |
146 | 3956cee1 | Michael Hanselmann | |
147 | 3956cee1 | Michael Hanselmann | |
148 | 1bc59f76 | Michael Hanselmann | def JobQueuePurge(): |
149 | 10c2650b | Iustin Pop | """Removes job queue files and archived jobs.
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150 | 10c2650b | Iustin Pop |
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151 | c8457ce7 | Iustin Pop | @rtype: tuple
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152 | c8457ce7 | Iustin Pop | @return: True, None
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153 | 24fc781f | Michael Hanselmann |
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154 | 24fc781f | Michael Hanselmann | """
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155 | 1bc59f76 | Michael Hanselmann | _CleanDirectory(constants.QUEUE_DIR, exclude=[constants.JOB_QUEUE_LOCK_FILE]) |
156 | 24fc781f | Michael Hanselmann | _CleanDirectory(constants.JOB_QUEUE_ARCHIVE_DIR) |
157 | 24fc781f | Michael Hanselmann | |
158 | 24fc781f | Michael Hanselmann | |
159 | bd1e4562 | Iustin Pop | def GetMasterInfo(): |
160 | bd1e4562 | Iustin Pop | """Returns master information.
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161 | bd1e4562 | Iustin Pop |
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162 | bd1e4562 | Iustin Pop | This is an utility function to compute master information, either
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163 | bd1e4562 | Iustin Pop | for consumption here or from the node daemon.
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164 | bd1e4562 | Iustin Pop |
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165 | bd1e4562 | Iustin Pop | @rtype: tuple
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166 | c26a6bd2 | Iustin Pop | @return: master_netdev, master_ip, master_name
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167 | 2a52a064 | Iustin Pop | @raise RPCFail: in case of errors
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168 | b1b6ea87 | Iustin Pop |
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169 | b1b6ea87 | Iustin Pop | """
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170 | b1b6ea87 | Iustin Pop | try:
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171 | c657dcc9 | Michael Hanselmann | cfg = _GetConfig() |
172 | c657dcc9 | Michael Hanselmann | master_netdev = cfg.GetMasterNetdev() |
173 | c657dcc9 | Michael Hanselmann | master_ip = cfg.GetMasterIP() |
174 | c657dcc9 | Michael Hanselmann | master_node = cfg.GetMasterNode() |
175 | b1b6ea87 | Iustin Pop | except errors.ConfigurationError, err:
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176 | 29921401 | Iustin Pop | _Fail("Cluster configuration incomplete: %s", err, exc=True) |
177 | c26a6bd2 | Iustin Pop | return master_netdev, master_ip, master_node
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178 | b1b6ea87 | Iustin Pop | |
179 | b1b6ea87 | Iustin Pop | |
180 | 1c65840b | Iustin Pop | def StartMaster(start_daemons): |
181 | a8083063 | Iustin Pop | """Activate local node as master node.
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182 | a8083063 | Iustin Pop |
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183 | 1c65840b | Iustin Pop | The function will always try activate the IP address of the master
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184 | 10c2650b | Iustin Pop | (unless someone else has it). It will also start the master daemons,
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185 | 10c2650b | Iustin Pop | based on the start_daemons parameter.
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186 | 10c2650b | Iustin Pop |
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187 | 10c2650b | Iustin Pop | @type start_daemons: boolean
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188 | c26a6bd2 | Iustin Pop | @param start_daemons: whether to also start the master
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189 | 10c2650b | Iustin Pop | daemons (ganeti-masterd and ganeti-rapi)
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190 | 10c2650b | Iustin Pop | @rtype: None
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191 | a8083063 | Iustin Pop |
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192 | a8083063 | Iustin Pop | """
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193 | 2a52a064 | Iustin Pop | # GetMasterInfo will raise an exception if not able to return data
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194 | 541741d3 | Guido Trotter | master_netdev, master_ip, _ = GetMasterInfo() |
195 | a8083063 | Iustin Pop | |
196 | 396b5733 | Iustin Pop | err_msgs = [] |
197 | b1b6ea87 | Iustin Pop | if utils.TcpPing(master_ip, constants.DEFAULT_NODED_PORT):
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198 | caad16e2 | Iustin Pop | if utils.OwnIpAddress(master_ip):
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199 | b1b6ea87 | Iustin Pop | # we already have the ip:
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200 | b726aff0 | Iustin Pop | logging.debug("Master IP already configured, doing nothing")
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201 | b1b6ea87 | Iustin Pop | else:
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202 | b726aff0 | Iustin Pop | msg = "Someone else has the master ip, not activating"
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203 | b726aff0 | Iustin Pop | logging.error(msg) |
204 | 396b5733 | Iustin Pop | err_msgs.append(msg) |
205 | b1b6ea87 | Iustin Pop | else:
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206 | b1b6ea87 | Iustin Pop | result = utils.RunCmd(["ip", "address", "add", "%s/32" % master_ip, |
207 | b1b6ea87 | Iustin Pop | "dev", master_netdev, "label", |
208 | b1b6ea87 | Iustin Pop | "%s:0" % master_netdev])
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209 | b1b6ea87 | Iustin Pop | if result.failed:
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210 | b726aff0 | Iustin Pop | msg = "Can't activate master IP: %s" % result.output
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211 | b726aff0 | Iustin Pop | logging.error(msg) |
212 | 396b5733 | Iustin Pop | err_msgs.append(msg) |
213 | b1b6ea87 | Iustin Pop | |
214 | b1b6ea87 | Iustin Pop | result = utils.RunCmd(["arping", "-q", "-U", "-c 3", "-I", master_netdev, |
215 | b1b6ea87 | Iustin Pop | "-s", master_ip, master_ip])
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216 | b1b6ea87 | Iustin Pop | # we'll ignore the exit code of arping
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217 | b1b6ea87 | Iustin Pop | |
218 | b1b6ea87 | Iustin Pop | # and now start the master and rapi daemons
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219 | b1b6ea87 | Iustin Pop | if start_daemons:
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220 | b1b6ea87 | Iustin Pop | for daemon in 'ganeti-masterd', 'ganeti-rapi': |
221 | b1b6ea87 | Iustin Pop | result = utils.RunCmd([daemon]) |
222 | b1b6ea87 | Iustin Pop | if result.failed:
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223 | b726aff0 | Iustin Pop | msg = "Can't start daemon %s: %s" % (daemon, result.output)
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224 | b726aff0 | Iustin Pop | logging.error(msg) |
225 | 396b5733 | Iustin Pop | err_msgs.append(msg) |
226 | b726aff0 | Iustin Pop | |
227 | 396b5733 | Iustin Pop | if err_msgs:
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228 | 396b5733 | Iustin Pop | _Fail("; ".join(err_msgs))
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229 | afdc3985 | Iustin Pop | |
230 | a8083063 | Iustin Pop | |
231 | 1c65840b | Iustin Pop | def StopMaster(stop_daemons): |
232 | a8083063 | Iustin Pop | """Deactivate this node as master.
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233 | a8083063 | Iustin Pop |
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234 | 1c65840b | Iustin Pop | The function will always try to deactivate the IP address of the
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235 | 10c2650b | Iustin Pop | master. It will also stop the master daemons depending on the
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236 | 10c2650b | Iustin Pop | stop_daemons parameter.
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237 | 10c2650b | Iustin Pop |
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238 | 10c2650b | Iustin Pop | @type stop_daemons: boolean
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239 | 10c2650b | Iustin Pop | @param stop_daemons: whether to also stop the master daemons
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240 | 10c2650b | Iustin Pop | (ganeti-masterd and ganeti-rapi)
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241 | 10c2650b | Iustin Pop | @rtype: None
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242 | a8083063 | Iustin Pop |
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243 | a8083063 | Iustin Pop | """
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244 | 6c00d19a | Iustin Pop | # TODO: log and report back to the caller the error failures; we
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245 | 6c00d19a | Iustin Pop | # need to decide in which case we fail the RPC for this
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246 | 2a52a064 | Iustin Pop | |
247 | 2a52a064 | Iustin Pop | # GetMasterInfo will raise an exception if not able to return data
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248 | 541741d3 | Guido Trotter | master_netdev, master_ip, _ = GetMasterInfo() |
249 | a8083063 | Iustin Pop | |
250 | b1b6ea87 | Iustin Pop | result = utils.RunCmd(["ip", "address", "del", "%s/32" % master_ip, |
251 | b1b6ea87 | Iustin Pop | "dev", master_netdev])
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252 | a8083063 | Iustin Pop | if result.failed:
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253 | 3b9e6a30 | Iustin Pop | logging.error("Can't remove the master IP, error: %s", result.output)
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254 | b1b6ea87 | Iustin Pop | # but otherwise ignore the failure
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255 | b1b6ea87 | Iustin Pop | |
256 | b1b6ea87 | Iustin Pop | if stop_daemons:
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257 | b1b6ea87 | Iustin Pop | # stop/kill the rapi and the master daemon
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258 | b1b6ea87 | Iustin Pop | for daemon in constants.RAPI_PID, constants.MASTERD_PID: |
259 | b1b6ea87 | Iustin Pop | utils.KillProcess(utils.ReadPidFile(utils.DaemonPidFileName(daemon))) |
260 | a8083063 | Iustin Pop | |
261 | a8083063 | Iustin Pop | |
262 | 9716fdce | Iustin Pop | def AddNode(dsa, dsapub, rsa, rsapub, sshkey, sshpub): |
263 | 7900ed01 | Iustin Pop | """Joins this node to the cluster.
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264 | a8083063 | Iustin Pop |
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265 | 7900ed01 | Iustin Pop | This does the following:
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266 | 7900ed01 | Iustin Pop | - updates the hostkeys of the machine (rsa and dsa)
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267 | 7900ed01 | Iustin Pop | - adds the ssh private key to the user
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268 | 7900ed01 | Iustin Pop | - adds the ssh public key to the users' authorized_keys file
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269 | a8083063 | Iustin Pop |
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270 | 10c2650b | Iustin Pop | @type dsa: str
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271 | 10c2650b | Iustin Pop | @param dsa: the DSA private key to write
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272 | 10c2650b | Iustin Pop | @type dsapub: str
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273 | 10c2650b | Iustin Pop | @param dsapub: the DSA public key to write
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274 | 10c2650b | Iustin Pop | @type rsa: str
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275 | 10c2650b | Iustin Pop | @param rsa: the RSA private key to write
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276 | 10c2650b | Iustin Pop | @type rsapub: str
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277 | 10c2650b | Iustin Pop | @param rsapub: the RSA public key to write
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278 | 10c2650b | Iustin Pop | @type sshkey: str
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279 | 10c2650b | Iustin Pop | @param sshkey: the SSH private key to write
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280 | 10c2650b | Iustin Pop | @type sshpub: str
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281 | 10c2650b | Iustin Pop | @param sshpub: the SSH public key to write
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282 | 10c2650b | Iustin Pop | @rtype: boolean
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283 | 10c2650b | Iustin Pop | @return: the success of the operation
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284 | 10c2650b | Iustin Pop |
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285 | 7900ed01 | Iustin Pop | """
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286 | 70d9e3d8 | Iustin Pop | sshd_keys = [(constants.SSH_HOST_RSA_PRIV, rsa, 0600),
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287 | 70d9e3d8 | Iustin Pop | (constants.SSH_HOST_RSA_PUB, rsapub, 0644),
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288 | 70d9e3d8 | Iustin Pop | (constants.SSH_HOST_DSA_PRIV, dsa, 0600),
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289 | 70d9e3d8 | Iustin Pop | (constants.SSH_HOST_DSA_PUB, dsapub, 0644)]
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290 | 7900ed01 | Iustin Pop | for name, content, mode in sshd_keys: |
291 | 70d9e3d8 | Iustin Pop | utils.WriteFile(name, data=content, mode=mode) |
292 | a8083063 | Iustin Pop | |
293 | 70d9e3d8 | Iustin Pop | try:
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294 | 70d9e3d8 | Iustin Pop | priv_key, pub_key, auth_keys = ssh.GetUserFiles(constants.GANETI_RUNAS, |
295 | 70d9e3d8 | Iustin Pop | mkdir=True)
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296 | 70d9e3d8 | Iustin Pop | except errors.OpExecError, err:
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297 | 2cc6781a | Iustin Pop | _Fail("Error while processing user ssh files: %s", err, exc=True) |
298 | a8083063 | Iustin Pop | |
299 | 70d9e3d8 | Iustin Pop | for name, content in [(priv_key, sshkey), (pub_key, sshpub)]: |
300 | 70d9e3d8 | Iustin Pop | utils.WriteFile(name, data=content, mode=0600)
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301 | a8083063 | Iustin Pop | |
302 | 70d9e3d8 | Iustin Pop | utils.AddAuthorizedKey(auth_keys, sshpub) |
303 | a8083063 | Iustin Pop | |
304 | f491c3a8 | Michael Hanselmann | utils.RunCmd([constants.SSH_INITD_SCRIPT, "restart"])
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305 | a8083063 | Iustin Pop | |
306 | a8083063 | Iustin Pop | |
307 | a8083063 | Iustin Pop | def LeaveCluster(): |
308 | 10c2650b | Iustin Pop | """Cleans up and remove the current node.
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309 | 10c2650b | Iustin Pop |
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310 | 10c2650b | Iustin Pop | This function cleans up and prepares the current node to be removed
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311 | 10c2650b | Iustin Pop | from the cluster.
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312 | 10c2650b | Iustin Pop |
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313 | 10c2650b | Iustin Pop | If processing is successful, then it raises an
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314 | c41eea6e | Iustin Pop | L{errors.QuitGanetiException} which is used as a special case to
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315 | 10c2650b | Iustin Pop | shutdown the node daemon.
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316 | a8083063 | Iustin Pop |
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317 | a8083063 | Iustin Pop | """
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318 | f78346f5 | Michael Hanselmann | _CleanDirectory(constants.DATA_DIR) |
319 | 1bc59f76 | Michael Hanselmann | JobQueuePurge() |
320 | f78346f5 | Michael Hanselmann | |
321 | 70d9e3d8 | Iustin Pop | try:
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322 | 70d9e3d8 | Iustin Pop | priv_key, pub_key, auth_keys = ssh.GetUserFiles(constants.GANETI_RUNAS) |
323 | 7900ed01 | Iustin Pop | |
324 | 0623d351 | Iustin Pop | f = open(pub_key, 'r') |
325 | 0623d351 | Iustin Pop | try:
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326 | 0623d351 | Iustin Pop | utils.RemoveAuthorizedKey(auth_keys, f.read(8192))
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327 | 0623d351 | Iustin Pop | finally:
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328 | 0623d351 | Iustin Pop | f.close() |
329 | a8083063 | Iustin Pop | |
330 | 0623d351 | Iustin Pop | utils.RemoveFile(priv_key) |
331 | 0623d351 | Iustin Pop | utils.RemoveFile(pub_key) |
332 | 0623d351 | Iustin Pop | except errors.OpExecError:
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333 | 0623d351 | Iustin Pop | logging.exception("Error while processing ssh files")
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334 | a8083063 | Iustin Pop | |
335 | 0623d351 | Iustin Pop | # Raise a custom exception (handled in ganeti-noded)
|
336 | 0623d351 | Iustin Pop | raise errors.QuitGanetiException(True, 'Shutdown scheduled') |
337 | 6d8b6238 | Guido Trotter | |
338 | a8083063 | Iustin Pop | |
339 | e69d05fd | Iustin Pop | def GetNodeInfo(vgname, hypervisor_type): |
340 | 2f8598a5 | Alexander Schreiber | """Gives back a hash with different informations about the node.
|
341 | a8083063 | Iustin Pop |
|
342 | e69d05fd | Iustin Pop | @type vgname: C{string}
|
343 | e69d05fd | Iustin Pop | @param vgname: the name of the volume group to ask for disk space information
|
344 | e69d05fd | Iustin Pop | @type hypervisor_type: C{str}
|
345 | e69d05fd | Iustin Pop | @param hypervisor_type: the name of the hypervisor to ask for
|
346 | e69d05fd | Iustin Pop | memory information
|
347 | e69d05fd | Iustin Pop | @rtype: C{dict}
|
348 | e69d05fd | Iustin Pop | @return: dictionary with the following keys:
|
349 | e69d05fd | Iustin Pop | - vg_size is the size of the configured volume group in MiB
|
350 | e69d05fd | Iustin Pop | - vg_free is the free size of the volume group in MiB
|
351 | e69d05fd | Iustin Pop | - memory_dom0 is the memory allocated for domain0 in MiB
|
352 | e69d05fd | Iustin Pop | - memory_free is the currently available (free) ram in MiB
|
353 | e69d05fd | Iustin Pop | - memory_total is the total number of ram in MiB
|
354 | a8083063 | Iustin Pop |
|
355 | 098c0958 | Michael Hanselmann | """
|
356 | a8083063 | Iustin Pop | outputarray = {} |
357 | a8083063 | Iustin Pop | vginfo = _GetVGInfo(vgname) |
358 | a8083063 | Iustin Pop | outputarray['vg_size'] = vginfo['vg_size'] |
359 | a8083063 | Iustin Pop | outputarray['vg_free'] = vginfo['vg_free'] |
360 | a8083063 | Iustin Pop | |
361 | e69d05fd | Iustin Pop | hyper = hypervisor.GetHypervisor(hypervisor_type) |
362 | a8083063 | Iustin Pop | hyp_info = hyper.GetNodeInfo() |
363 | a8083063 | Iustin Pop | if hyp_info is not None: |
364 | a8083063 | Iustin Pop | outputarray.update(hyp_info) |
365 | a8083063 | Iustin Pop | |
366 | 3ef10550 | Michael Hanselmann | f = open("/proc/sys/kernel/random/boot_id", 'r') |
367 | 3ef10550 | Michael Hanselmann | try:
|
368 | 3ef10550 | Michael Hanselmann | outputarray["bootid"] = f.read(128).rstrip("\n") |
369 | 3ef10550 | Michael Hanselmann | finally:
|
370 | 3ef10550 | Michael Hanselmann | f.close() |
371 | 3ef10550 | Michael Hanselmann | |
372 | c26a6bd2 | Iustin Pop | return outputarray
|
373 | a8083063 | Iustin Pop | |
374 | a8083063 | Iustin Pop | |
375 | 62c9ec92 | Iustin Pop | def VerifyNode(what, cluster_name): |
376 | a8083063 | Iustin Pop | """Verify the status of the local node.
|
377 | a8083063 | Iustin Pop |
|
378 | e69d05fd | Iustin Pop | Based on the input L{what} parameter, various checks are done on the
|
379 | e69d05fd | Iustin Pop | local node.
|
380 | e69d05fd | Iustin Pop |
|
381 | e69d05fd | Iustin Pop | If the I{filelist} key is present, this list of
|
382 | e69d05fd | Iustin Pop | files is checksummed and the file/checksum pairs are returned.
|
383 | e69d05fd | Iustin Pop |
|
384 | e69d05fd | Iustin Pop | If the I{nodelist} key is present, we check that we have
|
385 | e69d05fd | Iustin Pop | connectivity via ssh with the target nodes (and check the hostname
|
386 | e69d05fd | Iustin Pop | report).
|
387 | a8083063 | Iustin Pop |
|
388 | e69d05fd | Iustin Pop | If the I{node-net-test} key is present, we check that we have
|
389 | e69d05fd | Iustin Pop | connectivity to the given nodes via both primary IP and, if
|
390 | e69d05fd | Iustin Pop | applicable, secondary IPs.
|
391 | e69d05fd | Iustin Pop |
|
392 | e69d05fd | Iustin Pop | @type what: C{dict}
|
393 | e69d05fd | Iustin Pop | @param what: a dictionary of things to check:
|
394 | e69d05fd | Iustin Pop | - filelist: list of files for which to compute checksums
|
395 | e69d05fd | Iustin Pop | - nodelist: list of nodes we should check ssh communication with
|
396 | e69d05fd | Iustin Pop | - node-net-test: list of nodes we should check node daemon port
|
397 | e69d05fd | Iustin Pop | connectivity with
|
398 | e69d05fd | Iustin Pop | - hypervisor: list with hypervisors to run the verify for
|
399 | 10c2650b | Iustin Pop | @rtype: dict
|
400 | 10c2650b | Iustin Pop | @return: a dictionary with the same keys as the input dict, and
|
401 | 10c2650b | Iustin Pop | values representing the result of the checks
|
402 | a8083063 | Iustin Pop |
|
403 | a8083063 | Iustin Pop | """
|
404 | a8083063 | Iustin Pop | result = {} |
405 | a8083063 | Iustin Pop | |
406 | 25361b9a | Iustin Pop | if constants.NV_HYPERVISOR in what: |
407 | 25361b9a | Iustin Pop | result[constants.NV_HYPERVISOR] = tmp = {} |
408 | 25361b9a | Iustin Pop | for hv_name in what[constants.NV_HYPERVISOR]: |
409 | 25361b9a | Iustin Pop | tmp[hv_name] = hypervisor.GetHypervisor(hv_name).Verify() |
410 | 25361b9a | Iustin Pop | |
411 | 25361b9a | Iustin Pop | if constants.NV_FILELIST in what: |
412 | 25361b9a | Iustin Pop | result[constants.NV_FILELIST] = utils.FingerprintFiles( |
413 | 25361b9a | Iustin Pop | what[constants.NV_FILELIST]) |
414 | 25361b9a | Iustin Pop | |
415 | 25361b9a | Iustin Pop | if constants.NV_NODELIST in what: |
416 | 25361b9a | Iustin Pop | result[constants.NV_NODELIST] = tmp = {} |
417 | 25361b9a | Iustin Pop | random.shuffle(what[constants.NV_NODELIST]) |
418 | 25361b9a | Iustin Pop | for node in what[constants.NV_NODELIST]: |
419 | 62c9ec92 | Iustin Pop | success, message = _GetSshRunner(cluster_name).VerifyNodeHostname(node) |
420 | a8083063 | Iustin Pop | if not success: |
421 | 25361b9a | Iustin Pop | tmp[node] = message |
422 | 25361b9a | Iustin Pop | |
423 | 25361b9a | Iustin Pop | if constants.NV_NODENETTEST in what: |
424 | 25361b9a | Iustin Pop | result[constants.NV_NODENETTEST] = tmp = {} |
425 | 9d4bfc96 | Iustin Pop | my_name = utils.HostInfo().name |
426 | 9d4bfc96 | Iustin Pop | my_pip = my_sip = None
|
427 | 25361b9a | Iustin Pop | for name, pip, sip in what[constants.NV_NODENETTEST]: |
428 | 9d4bfc96 | Iustin Pop | if name == my_name:
|
429 | 9d4bfc96 | Iustin Pop | my_pip = pip |
430 | 9d4bfc96 | Iustin Pop | my_sip = sip |
431 | 9d4bfc96 | Iustin Pop | break
|
432 | 9d4bfc96 | Iustin Pop | if not my_pip: |
433 | 25361b9a | Iustin Pop | tmp[my_name] = ("Can't find my own primary/secondary IP"
|
434 | 25361b9a | Iustin Pop | " in the node list")
|
435 | 9d4bfc96 | Iustin Pop | else:
|
436 | c657dcc9 | Michael Hanselmann | port = utils.GetNodeDaemonPort() |
437 | 25361b9a | Iustin Pop | for name, pip, sip in what[constants.NV_NODENETTEST]: |
438 | 9d4bfc96 | Iustin Pop | fail = [] |
439 | 9d4bfc96 | Iustin Pop | if not utils.TcpPing(pip, port, source=my_pip): |
440 | 9d4bfc96 | Iustin Pop | fail.append("primary")
|
441 | 9d4bfc96 | Iustin Pop | if sip != pip:
|
442 | 9d4bfc96 | Iustin Pop | if not utils.TcpPing(sip, port, source=my_sip): |
443 | 9d4bfc96 | Iustin Pop | fail.append("secondary")
|
444 | 9d4bfc96 | Iustin Pop | if fail:
|
445 | 25361b9a | Iustin Pop | tmp[name] = ("failure using the %s interface(s)" %
|
446 | 25361b9a | Iustin Pop | " and ".join(fail))
|
447 | 25361b9a | Iustin Pop | |
448 | 25361b9a | Iustin Pop | if constants.NV_LVLIST in what: |
449 | 25361b9a | Iustin Pop | result[constants.NV_LVLIST] = GetVolumeList(what[constants.NV_LVLIST]) |
450 | 25361b9a | Iustin Pop | |
451 | 25361b9a | Iustin Pop | if constants.NV_INSTANCELIST in what: |
452 | 25361b9a | Iustin Pop | result[constants.NV_INSTANCELIST] = GetInstanceList( |
453 | 25361b9a | Iustin Pop | what[constants.NV_INSTANCELIST]) |
454 | 25361b9a | Iustin Pop | |
455 | 25361b9a | Iustin Pop | if constants.NV_VGLIST in what: |
456 | e480923b | Iustin Pop | result[constants.NV_VGLIST] = utils.ListVolumeGroups() |
457 | 25361b9a | Iustin Pop | |
458 | 25361b9a | Iustin Pop | if constants.NV_VERSION in what: |
459 | e9ce0a64 | Iustin Pop | result[constants.NV_VERSION] = (constants.PROTOCOL_VERSION, |
460 | e9ce0a64 | Iustin Pop | constants.RELEASE_VERSION) |
461 | 25361b9a | Iustin Pop | |
462 | 25361b9a | Iustin Pop | if constants.NV_HVINFO in what: |
463 | 25361b9a | Iustin Pop | hyper = hypervisor.GetHypervisor(what[constants.NV_HVINFO]) |
464 | 25361b9a | Iustin Pop | result[constants.NV_HVINFO] = hyper.GetNodeInfo() |
465 | 9d4bfc96 | Iustin Pop | |
466 | 6d2e83d5 | Iustin Pop | if constants.NV_DRBDLIST in what: |
467 | 6d2e83d5 | Iustin Pop | try:
|
468 | 6d2e83d5 | Iustin Pop | used_minors = bdev.DRBD8.GetUsedDevs().keys() |
469 | f6eaed12 | Iustin Pop | except errors.BlockDeviceError, err:
|
470 | 6d2e83d5 | Iustin Pop | logging.warning("Can't get used minors list", exc_info=True) |
471 | f6eaed12 | Iustin Pop | used_minors = str(err)
|
472 | 6d2e83d5 | Iustin Pop | result[constants.NV_DRBDLIST] = used_minors |
473 | 6d2e83d5 | Iustin Pop | |
474 | c26a6bd2 | Iustin Pop | return result
|
475 | a8083063 | Iustin Pop | |
476 | a8083063 | Iustin Pop | |
477 | a8083063 | Iustin Pop | def GetVolumeList(vg_name): |
478 | a8083063 | Iustin Pop | """Compute list of logical volumes and their size.
|
479 | a8083063 | Iustin Pop |
|
480 | 10c2650b | Iustin Pop | @type vg_name: str
|
481 | 10c2650b | Iustin Pop | @param vg_name: the volume group whose LVs we should list
|
482 | 10c2650b | Iustin Pop | @rtype: dict
|
483 | 10c2650b | Iustin Pop | @return:
|
484 | 10c2650b | Iustin Pop | dictionary of all partions (key) with value being a tuple of
|
485 | 10c2650b | Iustin Pop | their size (in MiB), inactive and online status::
|
486 | 10c2650b | Iustin Pop |
|
487 | 10c2650b | Iustin Pop | {'test1': ('20.06', True, True)}
|
488 | 10c2650b | Iustin Pop |
|
489 | 10c2650b | Iustin Pop | in case of errors, a string is returned with the error
|
490 | 10c2650b | Iustin Pop | details.
|
491 | a8083063 | Iustin Pop |
|
492 | a8083063 | Iustin Pop | """
|
493 | cb2037a2 | Iustin Pop | lvs = {} |
494 | cb2037a2 | Iustin Pop | sep = '|'
|
495 | cb2037a2 | Iustin Pop | result = utils.RunCmd(["lvs", "--noheadings", "--units=m", "--nosuffix", |
496 | cb2037a2 | Iustin Pop | "--separator=%s" % sep,
|
497 | cb2037a2 | Iustin Pop | "-olv_name,lv_size,lv_attr", vg_name])
|
498 | a8083063 | Iustin Pop | if result.failed:
|
499 | 29d376ec | Iustin Pop | _Fail("Failed to list logical volumes, lvs output: %s", result.output)
|
500 | cb2037a2 | Iustin Pop | |
501 | df4c2628 | Iustin Pop | valid_line_re = re.compile("^ *([^|]+)\|([0-9.]+)\|([^|]{6})\|?$")
|
502 | cb2037a2 | Iustin Pop | for line in result.stdout.splitlines(): |
503 | df4c2628 | Iustin Pop | line = line.strip() |
504 | df4c2628 | Iustin Pop | match = valid_line_re.match(line) |
505 | df4c2628 | Iustin Pop | if not match: |
506 | 18682bca | Iustin Pop | logging.error("Invalid line returned from lvs output: '%s'", line)
|
507 | df4c2628 | Iustin Pop | continue
|
508 | df4c2628 | Iustin Pop | name, size, attr = match.groups() |
509 | cb2037a2 | Iustin Pop | inactive = attr[4] == '-' |
510 | cb2037a2 | Iustin Pop | online = attr[5] == 'o' |
511 | cb2037a2 | Iustin Pop | lvs[name] = (size, inactive, online) |
512 | cb2037a2 | Iustin Pop | |
513 | cb2037a2 | Iustin Pop | return lvs
|
514 | a8083063 | Iustin Pop | |
515 | a8083063 | Iustin Pop | |
516 | a8083063 | Iustin Pop | def ListVolumeGroups(): |
517 | 2f8598a5 | Alexander Schreiber | """List the volume groups and their size.
|
518 | a8083063 | Iustin Pop |
|
519 | 10c2650b | Iustin Pop | @rtype: dict
|
520 | 10c2650b | Iustin Pop | @return: dictionary with keys volume name and values the
|
521 | 10c2650b | Iustin Pop | size of the volume
|
522 | a8083063 | Iustin Pop |
|
523 | a8083063 | Iustin Pop | """
|
524 | c26a6bd2 | Iustin Pop | return utils.ListVolumeGroups()
|
525 | a8083063 | Iustin Pop | |
526 | a8083063 | Iustin Pop | |
527 | dcb93971 | Michael Hanselmann | def NodeVolumes(): |
528 | dcb93971 | Michael Hanselmann | """List all volumes on this node.
|
529 | dcb93971 | Michael Hanselmann |
|
530 | 10c2650b | Iustin Pop | @rtype: list
|
531 | 10c2650b | Iustin Pop | @return:
|
532 | 10c2650b | Iustin Pop | A list of dictionaries, each having four keys:
|
533 | 10c2650b | Iustin Pop | - name: the logical volume name,
|
534 | 10c2650b | Iustin Pop | - size: the size of the logical volume
|
535 | 10c2650b | Iustin Pop | - dev: the physical device on which the LV lives
|
536 | 10c2650b | Iustin Pop | - vg: the volume group to which it belongs
|
537 | 10c2650b | Iustin Pop |
|
538 | 10c2650b | Iustin Pop | In case of errors, we return an empty list and log the
|
539 | 10c2650b | Iustin Pop | error.
|
540 | 10c2650b | Iustin Pop |
|
541 | 10c2650b | Iustin Pop | Note that since a logical volume can live on multiple physical
|
542 | 10c2650b | Iustin Pop | volumes, the resulting list might include a logical volume
|
543 | 10c2650b | Iustin Pop | multiple times.
|
544 | 10c2650b | Iustin Pop |
|
545 | dcb93971 | Michael Hanselmann | """
|
546 | dcb93971 | Michael Hanselmann | result = utils.RunCmd(["lvs", "--noheadings", "--units=m", "--nosuffix", |
547 | dcb93971 | Michael Hanselmann | "--separator=|",
|
548 | dcb93971 | Michael Hanselmann | "--options=lv_name,lv_size,devices,vg_name"])
|
549 | dcb93971 | Michael Hanselmann | if result.failed:
|
550 | 10bfe6cb | Iustin Pop | _Fail("Failed to list logical volumes, lvs output: %s",
|
551 | 10bfe6cb | Iustin Pop | result.output) |
552 | dcb93971 | Michael Hanselmann | |
553 | dcb93971 | Michael Hanselmann | def parse_dev(dev): |
554 | dcb93971 | Michael Hanselmann | if '(' in dev: |
555 | dcb93971 | Michael Hanselmann | return dev.split('(')[0] |
556 | dcb93971 | Michael Hanselmann | else:
|
557 | dcb93971 | Michael Hanselmann | return dev
|
558 | dcb93971 | Michael Hanselmann | |
559 | dcb93971 | Michael Hanselmann | def map_line(line): |
560 | dcb93971 | Michael Hanselmann | return {
|
561 | dcb93971 | Michael Hanselmann | 'name': line[0].strip(), |
562 | dcb93971 | Michael Hanselmann | 'size': line[1].strip(), |
563 | dcb93971 | Michael Hanselmann | 'dev': parse_dev(line[2].strip()), |
564 | dcb93971 | Michael Hanselmann | 'vg': line[3].strip(), |
565 | dcb93971 | Michael Hanselmann | } |
566 | dcb93971 | Michael Hanselmann | |
567 | c26a6bd2 | Iustin Pop | return [map_line(line.split('|')) for line in result.stdout.splitlines() |
568 | c26a6bd2 | Iustin Pop | if line.count('|') >= 3] |
569 | dcb93971 | Michael Hanselmann | |
570 | dcb93971 | Michael Hanselmann | |
571 | a8083063 | Iustin Pop | def BridgesExist(bridges_list): |
572 | 2f8598a5 | Alexander Schreiber | """Check if a list of bridges exist on the current node.
|
573 | a8083063 | Iustin Pop |
|
574 | b1206984 | Iustin Pop | @rtype: boolean
|
575 | b1206984 | Iustin Pop | @return: C{True} if all of them exist, C{False} otherwise
|
576 | a8083063 | Iustin Pop |
|
577 | a8083063 | Iustin Pop | """
|
578 | 35c0c8da | Iustin Pop | missing = [] |
579 | a8083063 | Iustin Pop | for bridge in bridges_list: |
580 | a8083063 | Iustin Pop | if not utils.BridgeExists(bridge): |
581 | 35c0c8da | Iustin Pop | missing.append(bridge) |
582 | a8083063 | Iustin Pop | |
583 | 35c0c8da | Iustin Pop | if missing:
|
584 | afdc3985 | Iustin Pop | _Fail("Missing bridges %s", ", ".join(missing)) |
585 | 35c0c8da | Iustin Pop | |
586 | a8083063 | Iustin Pop | |
587 | e69d05fd | Iustin Pop | def GetInstanceList(hypervisor_list): |
588 | 2f8598a5 | Alexander Schreiber | """Provides a list of instances.
|
589 | a8083063 | Iustin Pop |
|
590 | e69d05fd | Iustin Pop | @type hypervisor_list: list
|
591 | e69d05fd | Iustin Pop | @param hypervisor_list: the list of hypervisors to query information
|
592 | e69d05fd | Iustin Pop |
|
593 | e69d05fd | Iustin Pop | @rtype: list
|
594 | e69d05fd | Iustin Pop | @return: a list of all running instances on the current node
|
595 | 10c2650b | Iustin Pop | - instance1.example.com
|
596 | 10c2650b | Iustin Pop | - instance2.example.com
|
597 | a8083063 | Iustin Pop |
|
598 | 098c0958 | Michael Hanselmann | """
|
599 | e69d05fd | Iustin Pop | results = [] |
600 | e69d05fd | Iustin Pop | for hname in hypervisor_list: |
601 | e69d05fd | Iustin Pop | try:
|
602 | e69d05fd | Iustin Pop | names = hypervisor.GetHypervisor(hname).ListInstances() |
603 | e69d05fd | Iustin Pop | results.extend(names) |
604 | e69d05fd | Iustin Pop | except errors.HypervisorError, err:
|
605 | aca13712 | Iustin Pop | _Fail("Error enumerating instances (hypervisor %s): %s",
|
606 | aca13712 | Iustin Pop | hname, err, exc=True)
|
607 | a8083063 | Iustin Pop | |
608 | e69d05fd | Iustin Pop | return results
|
609 | a8083063 | Iustin Pop | |
610 | a8083063 | Iustin Pop | |
611 | e69d05fd | Iustin Pop | def GetInstanceInfo(instance, hname): |
612 | 2f8598a5 | Alexander Schreiber | """Gives back the informations about an instance as a dictionary.
|
613 | a8083063 | Iustin Pop |
|
614 | e69d05fd | Iustin Pop | @type instance: string
|
615 | e69d05fd | Iustin Pop | @param instance: the instance name
|
616 | e69d05fd | Iustin Pop | @type hname: string
|
617 | e69d05fd | Iustin Pop | @param hname: the hypervisor type of the instance
|
618 | a8083063 | Iustin Pop |
|
619 | e69d05fd | Iustin Pop | @rtype: dict
|
620 | e69d05fd | Iustin Pop | @return: dictionary with the following keys:
|
621 | e69d05fd | Iustin Pop | - memory: memory size of instance (int)
|
622 | e69d05fd | Iustin Pop | - state: xen state of instance (string)
|
623 | e69d05fd | Iustin Pop | - time: cpu time of instance (float)
|
624 | a8083063 | Iustin Pop |
|
625 | 098c0958 | Michael Hanselmann | """
|
626 | a8083063 | Iustin Pop | output = {} |
627 | a8083063 | Iustin Pop | |
628 | e69d05fd | Iustin Pop | iinfo = hypervisor.GetHypervisor(hname).GetInstanceInfo(instance) |
629 | a8083063 | Iustin Pop | if iinfo is not None: |
630 | a8083063 | Iustin Pop | output['memory'] = iinfo[2] |
631 | a8083063 | Iustin Pop | output['state'] = iinfo[4] |
632 | a8083063 | Iustin Pop | output['time'] = iinfo[5] |
633 | a8083063 | Iustin Pop | |
634 | c26a6bd2 | Iustin Pop | return output
|
635 | a8083063 | Iustin Pop | |
636 | a8083063 | Iustin Pop | |
637 | 56e7640c | Iustin Pop | def GetInstanceMigratable(instance): |
638 | 56e7640c | Iustin Pop | """Gives whether an instance can be migrated.
|
639 | 56e7640c | Iustin Pop |
|
640 | 56e7640c | Iustin Pop | @type instance: L{objects.Instance}
|
641 | 56e7640c | Iustin Pop | @param instance: object representing the instance to be checked.
|
642 | 56e7640c | Iustin Pop |
|
643 | 56e7640c | Iustin Pop | @rtype: tuple
|
644 | 56e7640c | Iustin Pop | @return: tuple of (result, description) where:
|
645 | 56e7640c | Iustin Pop | - result: whether the instance can be migrated or not
|
646 | 56e7640c | Iustin Pop | - description: a description of the issue, if relevant
|
647 | 56e7640c | Iustin Pop |
|
648 | 56e7640c | Iustin Pop | """
|
649 | 56e7640c | Iustin Pop | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
650 | afdc3985 | Iustin Pop | iname = instance.name |
651 | afdc3985 | Iustin Pop | if iname not in hyper.ListInstances(): |
652 | afdc3985 | Iustin Pop | _Fail("Instance %s is not running", iname)
|
653 | 56e7640c | Iustin Pop | |
654 | 56e7640c | Iustin Pop | for idx in range(len(instance.disks)): |
655 | afdc3985 | Iustin Pop | link_name = _GetBlockDevSymlinkPath(iname, idx) |
656 | 56e7640c | Iustin Pop | if not os.path.islink(link_name): |
657 | afdc3985 | Iustin Pop | _Fail("Instance %s was not restarted since ganeti 1.2.5", iname)
|
658 | 56e7640c | Iustin Pop | |
659 | 56e7640c | Iustin Pop | |
660 | e69d05fd | Iustin Pop | def GetAllInstancesInfo(hypervisor_list): |
661 | a8083063 | Iustin Pop | """Gather data about all instances.
|
662 | a8083063 | Iustin Pop |
|
663 | 10c2650b | Iustin Pop | This is the equivalent of L{GetInstanceInfo}, except that it
|
664 | a8083063 | Iustin Pop | computes data for all instances at once, thus being faster if one
|
665 | a8083063 | Iustin Pop | needs data about more than one instance.
|
666 | a8083063 | Iustin Pop |
|
667 | e69d05fd | Iustin Pop | @type hypervisor_list: list
|
668 | e69d05fd | Iustin Pop | @param hypervisor_list: list of hypervisors to query for instance data
|
669 | e69d05fd | Iustin Pop |
|
670 | 955db481 | Guido Trotter | @rtype: dict
|
671 | e69d05fd | Iustin Pop | @return: dictionary of instance: data, with data having the following keys:
|
672 | e69d05fd | Iustin Pop | - memory: memory size of instance (int)
|
673 | e69d05fd | Iustin Pop | - state: xen state of instance (string)
|
674 | e69d05fd | Iustin Pop | - time: cpu time of instance (float)
|
675 | 10c2650b | Iustin Pop | - vcpus: the number of vcpus
|
676 | a8083063 | Iustin Pop |
|
677 | 098c0958 | Michael Hanselmann | """
|
678 | a8083063 | Iustin Pop | output = {} |
679 | a8083063 | Iustin Pop | |
680 | e69d05fd | Iustin Pop | for hname in hypervisor_list: |
681 | e69d05fd | Iustin Pop | iinfo = hypervisor.GetHypervisor(hname).GetAllInstancesInfo() |
682 | e69d05fd | Iustin Pop | if iinfo:
|
683 | 29921401 | Iustin Pop | for name, _, memory, vcpus, state, times in iinfo: |
684 | f23b5ae8 | Iustin Pop | value = { |
685 | e69d05fd | Iustin Pop | 'memory': memory,
|
686 | e69d05fd | Iustin Pop | 'vcpus': vcpus,
|
687 | e69d05fd | Iustin Pop | 'state': state,
|
688 | e69d05fd | Iustin Pop | 'time': times,
|
689 | e69d05fd | Iustin Pop | } |
690 | b33b6f55 | Iustin Pop | if name in output: |
691 | b33b6f55 | Iustin Pop | # we only check static parameters, like memory and vcpus,
|
692 | b33b6f55 | Iustin Pop | # and not state and time which can change between the
|
693 | b33b6f55 | Iustin Pop | # invocations of the different hypervisors
|
694 | b33b6f55 | Iustin Pop | for key in 'memory', 'vcpus': |
695 | b33b6f55 | Iustin Pop | if value[key] != output[name][key]:
|
696 | 2fa74ef4 | Iustin Pop | _Fail("Instance %s is running twice"
|
697 | 2fa74ef4 | Iustin Pop | " with different parameters", name)
|
698 | f23b5ae8 | Iustin Pop | output[name] = value |
699 | a8083063 | Iustin Pop | |
700 | c26a6bd2 | Iustin Pop | return output
|
701 | a8083063 | Iustin Pop | |
702 | a8083063 | Iustin Pop | |
703 | e557bae9 | Guido Trotter | def InstanceOsAdd(instance, reinstall): |
704 | 2f8598a5 | Alexander Schreiber | """Add an OS to an instance.
|
705 | a8083063 | Iustin Pop |
|
706 | d15a9ad3 | Guido Trotter | @type instance: L{objects.Instance}
|
707 | d15a9ad3 | Guido Trotter | @param instance: Instance whose OS is to be installed
|
708 | e557bae9 | Guido Trotter | @type reinstall: boolean
|
709 | e557bae9 | Guido Trotter | @param reinstall: whether this is an instance reinstall
|
710 | c26a6bd2 | Iustin Pop | @rtype: None
|
711 | a8083063 | Iustin Pop |
|
712 | a8083063 | Iustin Pop | """
|
713 | 255dcebd | Iustin Pop | inst_os = OSFromDisk(instance.os) |
714 | 255dcebd | Iustin Pop | |
715 | 58f6e5ca | Guido Trotter | create_env = OSEnvironment(instance) |
716 | e557bae9 | Guido Trotter | if reinstall:
|
717 | e557bae9 | Guido Trotter | create_env['INSTANCE_REINSTALL'] = "1" |
718 | a8083063 | Iustin Pop | |
719 | a8083063 | Iustin Pop | logfile = "%s/add-%s-%s-%d.log" % (constants.LOG_OS_DIR, instance.os,
|
720 | a8083063 | Iustin Pop | instance.name, int(time.time()))
|
721 | decd5f45 | Iustin Pop | |
722 | d868edb4 | Iustin Pop | result = utils.RunCmd([inst_os.create_script], env=create_env, |
723 | d868edb4 | Iustin Pop | cwd=inst_os.path, output=logfile,) |
724 | decd5f45 | Iustin Pop | if result.failed:
|
725 | 18682bca | Iustin Pop | logging.error("os create command '%s' returned error: %s, logfile: %s,"
|
726 | d868edb4 | Iustin Pop | " output: %s", result.cmd, result.fail_reason, logfile,
|
727 | 18682bca | Iustin Pop | result.output) |
728 | 26f15862 | Iustin Pop | lines = [utils.SafeEncode(val) |
729 | 20e01edd | Iustin Pop | for val in utils.TailFile(logfile, lines=20)] |
730 | afdc3985 | Iustin Pop | _Fail("OS create script failed (%s), last lines in the"
|
731 | afdc3985 | Iustin Pop | " log file:\n%s", result.fail_reason, "\n".join(lines), log=False) |
732 | decd5f45 | Iustin Pop | |
733 | decd5f45 | Iustin Pop | |
734 | d15a9ad3 | Guido Trotter | def RunRenameInstance(instance, old_name): |
735 | decd5f45 | Iustin Pop | """Run the OS rename script for an instance.
|
736 | decd5f45 | Iustin Pop |
|
737 | b1206984 | Iustin Pop | @type instance: L{objects.Instance}
|
738 | d15a9ad3 | Guido Trotter | @param instance: Instance whose OS is to be installed
|
739 | d15a9ad3 | Guido Trotter | @type old_name: string
|
740 | d15a9ad3 | Guido Trotter | @param old_name: previous instance name
|
741 | 10c2650b | Iustin Pop | @rtype: boolean
|
742 | 10c2650b | Iustin Pop | @return: the success of the operation
|
743 | decd5f45 | Iustin Pop |
|
744 | decd5f45 | Iustin Pop | """
|
745 | decd5f45 | Iustin Pop | inst_os = OSFromDisk(instance.os) |
746 | decd5f45 | Iustin Pop | |
747 | ff38b6c0 | Guido Trotter | rename_env = OSEnvironment(instance) |
748 | ff38b6c0 | Guido Trotter | rename_env['OLD_INSTANCE_NAME'] = old_name
|
749 | decd5f45 | Iustin Pop | |
750 | decd5f45 | Iustin Pop | logfile = "%s/rename-%s-%s-%s-%d.log" % (constants.LOG_OS_DIR, instance.os,
|
751 | decd5f45 | Iustin Pop | old_name, |
752 | decd5f45 | Iustin Pop | instance.name, int(time.time()))
|
753 | a8083063 | Iustin Pop | |
754 | d868edb4 | Iustin Pop | result = utils.RunCmd([inst_os.rename_script], env=rename_env, |
755 | d868edb4 | Iustin Pop | cwd=inst_os.path, output=logfile) |
756 | a8083063 | Iustin Pop | |
757 | a8083063 | Iustin Pop | if result.failed:
|
758 | 18682bca | Iustin Pop | logging.error("os create command '%s' returned error: %s output: %s",
|
759 | d868edb4 | Iustin Pop | result.cmd, result.fail_reason, result.output) |
760 | 26f15862 | Iustin Pop | lines = [utils.SafeEncode(val) |
761 | 96841384 | Iustin Pop | for val in utils.TailFile(logfile, lines=20)] |
762 | afdc3985 | Iustin Pop | _Fail("OS rename script failed (%s), last lines in the"
|
763 | afdc3985 | Iustin Pop | " log file:\n%s", result.fail_reason, "\n".join(lines), log=False) |
764 | a8083063 | Iustin Pop | |
765 | a8083063 | Iustin Pop | |
766 | a8083063 | Iustin Pop | def _GetVGInfo(vg_name): |
767 | a8083063 | Iustin Pop | """Get informations about the volume group.
|
768 | a8083063 | Iustin Pop |
|
769 | 10c2650b | Iustin Pop | @type vg_name: str
|
770 | 10c2650b | Iustin Pop | @param vg_name: the volume group which we query
|
771 | 10c2650b | Iustin Pop | @rtype: dict
|
772 | 10c2650b | Iustin Pop | @return:
|
773 | 10c2650b | Iustin Pop | A dictionary with the following keys:
|
774 | 10c2650b | Iustin Pop | - C{vg_size} is the total size of the volume group in MiB
|
775 | 10c2650b | Iustin Pop | - C{vg_free} is the free size of the volume group in MiB
|
776 | 10c2650b | Iustin Pop | - C{pv_count} are the number of physical disks in that VG
|
777 | a8083063 | Iustin Pop |
|
778 | 10c2650b | Iustin Pop | If an error occurs during gathering of data, we return the same dict
|
779 | 10c2650b | Iustin Pop | with keys all set to None.
|
780 | f4d377e7 | Iustin Pop |
|
781 | a8083063 | Iustin Pop | """
|
782 | f4d377e7 | Iustin Pop | retdic = dict.fromkeys(["vg_size", "vg_free", "pv_count"]) |
783 | f4d377e7 | Iustin Pop | |
784 | a8083063 | Iustin Pop | retval = utils.RunCmd(["vgs", "-ovg_size,vg_free,pv_count", "--noheadings", |
785 | a8083063 | Iustin Pop | "--nosuffix", "--units=m", "--separator=:", vg_name]) |
786 | a8083063 | Iustin Pop | |
787 | a8083063 | Iustin Pop | if retval.failed:
|
788 | 18682bca | Iustin Pop | logging.error("volume group %s not present", vg_name)
|
789 | f4d377e7 | Iustin Pop | return retdic
|
790 | d87ae7d2 | Iustin Pop | valarr = retval.stdout.strip().rstrip(':').split(':') |
791 | f4d377e7 | Iustin Pop | if len(valarr) == 3: |
792 | f4d377e7 | Iustin Pop | try:
|
793 | f4d377e7 | Iustin Pop | retdic = { |
794 | f4d377e7 | Iustin Pop | "vg_size": int(round(float(valarr[0]), 0)), |
795 | f4d377e7 | Iustin Pop | "vg_free": int(round(float(valarr[1]), 0)), |
796 | f4d377e7 | Iustin Pop | "pv_count": int(valarr[2]), |
797 | f4d377e7 | Iustin Pop | } |
798 | f4d377e7 | Iustin Pop | except ValueError, err: |
799 | 29921401 | Iustin Pop | logging.exception("Fail to parse vgs output: %s", err)
|
800 | f4d377e7 | Iustin Pop | else:
|
801 | 18682bca | Iustin Pop | logging.error("vgs output has the wrong number of fields (expected"
|
802 | 18682bca | Iustin Pop | " three): %s", str(valarr)) |
803 | a8083063 | Iustin Pop | return retdic
|
804 | a8083063 | Iustin Pop | |
805 | a8083063 | Iustin Pop | |
806 | 5282084b | Iustin Pop | def _GetBlockDevSymlinkPath(instance_name, idx): |
807 | 5282084b | Iustin Pop | return os.path.join(constants.DISK_LINKS_DIR,
|
808 | 5282084b | Iustin Pop | "%s:%d" % (instance_name, idx))
|
809 | 5282084b | Iustin Pop | |
810 | 5282084b | Iustin Pop | |
811 | 5282084b | Iustin Pop | def _SymlinkBlockDev(instance_name, device_path, idx): |
812 | 9332fd8a | Iustin Pop | """Set up symlinks to a instance's block device.
|
813 | 9332fd8a | Iustin Pop |
|
814 | 9332fd8a | Iustin Pop | This is an auxiliary function run when an instance is start (on the primary
|
815 | 9332fd8a | Iustin Pop | node) or when an instance is migrated (on the target node).
|
816 | 9332fd8a | Iustin Pop |
|
817 | 9332fd8a | Iustin Pop |
|
818 | 5282084b | Iustin Pop | @param instance_name: the name of the target instance
|
819 | 5282084b | Iustin Pop | @param device_path: path of the physical block device, on the node
|
820 | 5282084b | Iustin Pop | @param idx: the disk index
|
821 | 5282084b | Iustin Pop | @return: absolute path to the disk's symlink
|
822 | 9332fd8a | Iustin Pop |
|
823 | 9332fd8a | Iustin Pop | """
|
824 | 5282084b | Iustin Pop | link_name = _GetBlockDevSymlinkPath(instance_name, idx) |
825 | 9332fd8a | Iustin Pop | try:
|
826 | 9332fd8a | Iustin Pop | os.symlink(device_path, link_name) |
827 | 5282084b | Iustin Pop | except OSError, err: |
828 | 5282084b | Iustin Pop | if err.errno == errno.EEXIST:
|
829 | 9332fd8a | Iustin Pop | if (not os.path.islink(link_name) or |
830 | 9332fd8a | Iustin Pop | os.readlink(link_name) != device_path): |
831 | 9332fd8a | Iustin Pop | os.remove(link_name) |
832 | 9332fd8a | Iustin Pop | os.symlink(device_path, link_name) |
833 | 9332fd8a | Iustin Pop | else:
|
834 | 9332fd8a | Iustin Pop | raise
|
835 | 9332fd8a | Iustin Pop | |
836 | 9332fd8a | Iustin Pop | return link_name
|
837 | 9332fd8a | Iustin Pop | |
838 | 9332fd8a | Iustin Pop | |
839 | 5282084b | Iustin Pop | def _RemoveBlockDevLinks(instance_name, disks): |
840 | 3c9c571d | Iustin Pop | """Remove the block device symlinks belonging to the given instance.
|
841 | 3c9c571d | Iustin Pop |
|
842 | 3c9c571d | Iustin Pop | """
|
843 | 29921401 | Iustin Pop | for idx, _ in enumerate(disks): |
844 | 5282084b | Iustin Pop | link_name = _GetBlockDevSymlinkPath(instance_name, idx) |
845 | 5282084b | Iustin Pop | if os.path.islink(link_name):
|
846 | 3c9c571d | Iustin Pop | try:
|
847 | 03dfa658 | Iustin Pop | os.remove(link_name) |
848 | 03dfa658 | Iustin Pop | except OSError: |
849 | 03dfa658 | Iustin Pop | logging.exception("Can't remove symlink '%s'", link_name)
|
850 | 3c9c571d | Iustin Pop | |
851 | 3c9c571d | Iustin Pop | |
852 | 9332fd8a | Iustin Pop | def _GatherAndLinkBlockDevs(instance): |
853 | a8083063 | Iustin Pop | """Set up an instance's block device(s).
|
854 | a8083063 | Iustin Pop |
|
855 | a8083063 | Iustin Pop | This is run on the primary node at instance startup. The block
|
856 | a8083063 | Iustin Pop | devices must be already assembled.
|
857 | a8083063 | Iustin Pop |
|
858 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
859 | 10c2650b | Iustin Pop | @param instance: the instance whose disks we shoul assemble
|
860 | 069cfbf1 | Iustin Pop | @rtype: list
|
861 | 069cfbf1 | Iustin Pop | @return: list of (disk_object, device_path)
|
862 | 10c2650b | Iustin Pop |
|
863 | a8083063 | Iustin Pop | """
|
864 | a8083063 | Iustin Pop | block_devices = [] |
865 | 9332fd8a | Iustin Pop | for idx, disk in enumerate(instance.disks): |
866 | a8083063 | Iustin Pop | device = _RecursiveFindBD(disk) |
867 | a8083063 | Iustin Pop | if device is None: |
868 | a8083063 | Iustin Pop | raise errors.BlockDeviceError("Block device '%s' is not set up." % |
869 | a8083063 | Iustin Pop | str(disk))
|
870 | a8083063 | Iustin Pop | device.Open() |
871 | 9332fd8a | Iustin Pop | try:
|
872 | 5282084b | Iustin Pop | link_name = _SymlinkBlockDev(instance.name, device.dev_path, idx) |
873 | 9332fd8a | Iustin Pop | except OSError, e: |
874 | 9332fd8a | Iustin Pop | raise errors.BlockDeviceError("Cannot create block device symlink: %s" % |
875 | 9332fd8a | Iustin Pop | e.strerror) |
876 | 9332fd8a | Iustin Pop | |
877 | 9332fd8a | Iustin Pop | block_devices.append((disk, link_name)) |
878 | 9332fd8a | Iustin Pop | |
879 | a8083063 | Iustin Pop | return block_devices
|
880 | a8083063 | Iustin Pop | |
881 | a8083063 | Iustin Pop | |
882 | 07813a9e | Iustin Pop | def StartInstance(instance): |
883 | a8083063 | Iustin Pop | """Start an instance.
|
884 | a8083063 | Iustin Pop |
|
885 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
886 | e69d05fd | Iustin Pop | @param instance: the instance object
|
887 | c26a6bd2 | Iustin Pop | @rtype: None
|
888 | a8083063 | Iustin Pop |
|
889 | 098c0958 | Michael Hanselmann | """
|
890 | e69d05fd | Iustin Pop | running_instances = GetInstanceList([instance.hypervisor]) |
891 | a8083063 | Iustin Pop | |
892 | a8083063 | Iustin Pop | if instance.name in running_instances: |
893 | c26a6bd2 | Iustin Pop | logging.info("Instance %s already running, not starting", instance.name)
|
894 | c26a6bd2 | Iustin Pop | return
|
895 | a8083063 | Iustin Pop | |
896 | a8083063 | Iustin Pop | try:
|
897 | ec596c24 | Iustin Pop | block_devices = _GatherAndLinkBlockDevs(instance) |
898 | ec596c24 | Iustin Pop | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
899 | 07813a9e | Iustin Pop | hyper.StartInstance(instance, block_devices) |
900 | ec596c24 | Iustin Pop | except errors.BlockDeviceError, err:
|
901 | 2cc6781a | Iustin Pop | _Fail("Block device error: %s", err, exc=True) |
902 | a8083063 | Iustin Pop | except errors.HypervisorError, err:
|
903 | 5282084b | Iustin Pop | _RemoveBlockDevLinks(instance.name, instance.disks) |
904 | 2cc6781a | Iustin Pop | _Fail("Hypervisor error: %s", err, exc=True) |
905 | a8083063 | Iustin Pop | |
906 | a8083063 | Iustin Pop | |
907 | 1fae010f | Iustin Pop | def InstanceShutdown(instance): |
908 | a8083063 | Iustin Pop | """Shut an instance down.
|
909 | a8083063 | Iustin Pop |
|
910 | 10c2650b | Iustin Pop | @note: this functions uses polling with a hardcoded timeout.
|
911 | 10c2650b | Iustin Pop |
|
912 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
913 | e69d05fd | Iustin Pop | @param instance: the instance object
|
914 | c26a6bd2 | Iustin Pop | @rtype: None
|
915 | a8083063 | Iustin Pop |
|
916 | 098c0958 | Michael Hanselmann | """
|
917 | e69d05fd | Iustin Pop | hv_name = instance.hypervisor |
918 | e69d05fd | Iustin Pop | running_instances = GetInstanceList([hv_name]) |
919 | c26a6bd2 | Iustin Pop | iname = instance.name |
920 | a8083063 | Iustin Pop | |
921 | c26a6bd2 | Iustin Pop | if iname not in running_instances: |
922 | c26a6bd2 | Iustin Pop | logging.info("Instance %s not running, doing nothing", iname)
|
923 | c26a6bd2 | Iustin Pop | return
|
924 | a8083063 | Iustin Pop | |
925 | e69d05fd | Iustin Pop | hyper = hypervisor.GetHypervisor(hv_name) |
926 | a8083063 | Iustin Pop | try:
|
927 | a8083063 | Iustin Pop | hyper.StopInstance(instance) |
928 | a8083063 | Iustin Pop | except errors.HypervisorError, err:
|
929 | c26a6bd2 | Iustin Pop | _Fail("Failed to stop instance %s: %s", iname, err)
|
930 | a8083063 | Iustin Pop | |
931 | a8083063 | Iustin Pop | # test every 10secs for 2min
|
932 | a8083063 | Iustin Pop | |
933 | a8083063 | Iustin Pop | time.sleep(1)
|
934 | a8083063 | Iustin Pop | for dummy in range(11): |
935 | e69d05fd | Iustin Pop | if instance.name not in GetInstanceList([hv_name]): |
936 | a8083063 | Iustin Pop | break
|
937 | a8083063 | Iustin Pop | time.sleep(10)
|
938 | a8083063 | Iustin Pop | else:
|
939 | a8083063 | Iustin Pop | # the shutdown did not succeed
|
940 | c26a6bd2 | Iustin Pop | logging.error("Shutdown of '%s' unsuccessful, using destroy", iname)
|
941 | a8083063 | Iustin Pop | |
942 | a8083063 | Iustin Pop | try:
|
943 | a8083063 | Iustin Pop | hyper.StopInstance(instance, force=True)
|
944 | a8083063 | Iustin Pop | except errors.HypervisorError, err:
|
945 | c26a6bd2 | Iustin Pop | _Fail("Failed to force stop instance %s: %s", iname, err)
|
946 | a8083063 | Iustin Pop | |
947 | a8083063 | Iustin Pop | time.sleep(1)
|
948 | e69d05fd | Iustin Pop | if instance.name in GetInstanceList([hv_name]): |
949 | c26a6bd2 | Iustin Pop | _Fail("Could not shutdown instance %s even by destroy", iname)
|
950 | 3c9c571d | Iustin Pop | |
951 | c26a6bd2 | Iustin Pop | _RemoveBlockDevLinks(iname, instance.disks) |
952 | a8083063 | Iustin Pop | |
953 | a8083063 | Iustin Pop | |
954 | 07813a9e | Iustin Pop | def InstanceReboot(instance, reboot_type): |
955 | 007a2f3e | Alexander Schreiber | """Reboot an instance.
|
956 | 007a2f3e | Alexander Schreiber |
|
957 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
958 | 10c2650b | Iustin Pop | @param instance: the instance object to reboot
|
959 | 10c2650b | Iustin Pop | @type reboot_type: str
|
960 | 10c2650b | Iustin Pop | @param reboot_type: the type of reboot, one the following
|
961 | 10c2650b | Iustin Pop | constants:
|
962 | 10c2650b | Iustin Pop | - L{constants.INSTANCE_REBOOT_SOFT}: only reboot the
|
963 | 10c2650b | Iustin Pop | instance OS, do not recreate the VM
|
964 | 10c2650b | Iustin Pop | - L{constants.INSTANCE_REBOOT_HARD}: tear down and
|
965 | 10c2650b | Iustin Pop | restart the VM (at the hypervisor level)
|
966 | 10c2650b | Iustin Pop | - the other reboot type (L{constants.INSTANCE_REBOOT_HARD})
|
967 | 10c2650b | Iustin Pop | is not accepted here, since that mode is handled
|
968 | 10c2650b | Iustin Pop | differently
|
969 | c26a6bd2 | Iustin Pop | @rtype: None
|
970 | 007a2f3e | Alexander Schreiber |
|
971 | 007a2f3e | Alexander Schreiber | """
|
972 | e69d05fd | Iustin Pop | running_instances = GetInstanceList([instance.hypervisor]) |
973 | 007a2f3e | Alexander Schreiber | |
974 | 007a2f3e | Alexander Schreiber | if instance.name not in running_instances: |
975 | 2cc6781a | Iustin Pop | _Fail("Cannot reboot instance %s that is not running", instance.name)
|
976 | 007a2f3e | Alexander Schreiber | |
977 | e69d05fd | Iustin Pop | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
978 | 007a2f3e | Alexander Schreiber | if reboot_type == constants.INSTANCE_REBOOT_SOFT:
|
979 | 007a2f3e | Alexander Schreiber | try:
|
980 | 007a2f3e | Alexander Schreiber | hyper.RebootInstance(instance) |
981 | 007a2f3e | Alexander Schreiber | except errors.HypervisorError, err:
|
982 | 2cc6781a | Iustin Pop | _Fail("Failed to soft reboot instance %s: %s", instance.name, err)
|
983 | 007a2f3e | Alexander Schreiber | elif reboot_type == constants.INSTANCE_REBOOT_HARD:
|
984 | 007a2f3e | Alexander Schreiber | try:
|
985 | c26a6bd2 | Iustin Pop | InstanceShutdown(instance) |
986 | 07813a9e | Iustin Pop | return StartInstance(instance)
|
987 | 007a2f3e | Alexander Schreiber | except errors.HypervisorError, err:
|
988 | 2cc6781a | Iustin Pop | _Fail("Failed to hard reboot instance %s: %s", instance.name, err)
|
989 | 007a2f3e | Alexander Schreiber | else:
|
990 | 2cc6781a | Iustin Pop | _Fail("Invalid reboot_type received: %s", reboot_type)
|
991 | 007a2f3e | Alexander Schreiber | |
992 | 007a2f3e | Alexander Schreiber | |
993 | 6906a9d8 | Guido Trotter | def MigrationInfo(instance): |
994 | 6906a9d8 | Guido Trotter | """Gather information about an instance to be migrated.
|
995 | 6906a9d8 | Guido Trotter |
|
996 | 6906a9d8 | Guido Trotter | @type instance: L{objects.Instance}
|
997 | 6906a9d8 | Guido Trotter | @param instance: the instance definition
|
998 | 6906a9d8 | Guido Trotter |
|
999 | 6906a9d8 | Guido Trotter | """
|
1000 | cd42d0ad | Guido Trotter | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
1001 | cd42d0ad | Guido Trotter | try:
|
1002 | cd42d0ad | Guido Trotter | info = hyper.MigrationInfo(instance) |
1003 | cd42d0ad | Guido Trotter | except errors.HypervisorError, err:
|
1004 | 2cc6781a | Iustin Pop | _Fail("Failed to fetch migration information: %s", err, exc=True) |
1005 | c26a6bd2 | Iustin Pop | return info
|
1006 | 6906a9d8 | Guido Trotter | |
1007 | 6906a9d8 | Guido Trotter | |
1008 | 6906a9d8 | Guido Trotter | def AcceptInstance(instance, info, target): |
1009 | 6906a9d8 | Guido Trotter | """Prepare the node to accept an instance.
|
1010 | 6906a9d8 | Guido Trotter |
|
1011 | 6906a9d8 | Guido Trotter | @type instance: L{objects.Instance}
|
1012 | 6906a9d8 | Guido Trotter | @param instance: the instance definition
|
1013 | 6906a9d8 | Guido Trotter | @type info: string/data (opaque)
|
1014 | 6906a9d8 | Guido Trotter | @param info: migration information, from the source node
|
1015 | 6906a9d8 | Guido Trotter | @type target: string
|
1016 | 6906a9d8 | Guido Trotter | @param target: target host (usually ip), on this node
|
1017 | 6906a9d8 | Guido Trotter |
|
1018 | 6906a9d8 | Guido Trotter | """
|
1019 | cd42d0ad | Guido Trotter | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
1020 | cd42d0ad | Guido Trotter | try:
|
1021 | cd42d0ad | Guido Trotter | hyper.AcceptInstance(instance, info, target) |
1022 | cd42d0ad | Guido Trotter | except errors.HypervisorError, err:
|
1023 | 2cc6781a | Iustin Pop | _Fail("Failed to accept instance: %s", err, exc=True) |
1024 | 6906a9d8 | Guido Trotter | |
1025 | 6906a9d8 | Guido Trotter | |
1026 | 6906a9d8 | Guido Trotter | def FinalizeMigration(instance, info, success): |
1027 | 6906a9d8 | Guido Trotter | """Finalize any preparation to accept an instance.
|
1028 | 6906a9d8 | Guido Trotter |
|
1029 | 6906a9d8 | Guido Trotter | @type instance: L{objects.Instance}
|
1030 | 6906a9d8 | Guido Trotter | @param instance: the instance definition
|
1031 | 6906a9d8 | Guido Trotter | @type info: string/data (opaque)
|
1032 | 6906a9d8 | Guido Trotter | @param info: migration information, from the source node
|
1033 | 6906a9d8 | Guido Trotter | @type success: boolean
|
1034 | 6906a9d8 | Guido Trotter | @param success: whether the migration was a success or a failure
|
1035 | 6906a9d8 | Guido Trotter |
|
1036 | 6906a9d8 | Guido Trotter | """
|
1037 | cd42d0ad | Guido Trotter | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
1038 | cd42d0ad | Guido Trotter | try:
|
1039 | cd42d0ad | Guido Trotter | hyper.FinalizeMigration(instance, info, success) |
1040 | cd42d0ad | Guido Trotter | except errors.HypervisorError, err:
|
1041 | 2cc6781a | Iustin Pop | _Fail("Failed to finalize migration: %s", err, exc=True) |
1042 | 6906a9d8 | Guido Trotter | |
1043 | 6906a9d8 | Guido Trotter | |
1044 | 2a10865c | Iustin Pop | def MigrateInstance(instance, target, live): |
1045 | 2a10865c | Iustin Pop | """Migrates an instance to another node.
|
1046 | 2a10865c | Iustin Pop |
|
1047 | b1206984 | Iustin Pop | @type instance: L{objects.Instance}
|
1048 | 9f0e6b37 | Iustin Pop | @param instance: the instance definition
|
1049 | 9f0e6b37 | Iustin Pop | @type target: string
|
1050 | 9f0e6b37 | Iustin Pop | @param target: the target node name
|
1051 | 9f0e6b37 | Iustin Pop | @type live: boolean
|
1052 | 9f0e6b37 | Iustin Pop | @param live: whether the migration should be done live or not (the
|
1053 | 9f0e6b37 | Iustin Pop | interpretation of this parameter is left to the hypervisor)
|
1054 | 9f0e6b37 | Iustin Pop | @rtype: tuple
|
1055 | 9f0e6b37 | Iustin Pop | @return: a tuple of (success, msg) where:
|
1056 | 9f0e6b37 | Iustin Pop | - succes is a boolean denoting the success/failure of the operation
|
1057 | 9f0e6b37 | Iustin Pop | - msg is a string with details in case of failure
|
1058 | 9f0e6b37 | Iustin Pop |
|
1059 | 2a10865c | Iustin Pop | """
|
1060 | 53c776b5 | Iustin Pop | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
1061 | 2a10865c | Iustin Pop | |
1062 | 2a10865c | Iustin Pop | try:
|
1063 | 9f0e6b37 | Iustin Pop | hyper.MigrateInstance(instance.name, target, live) |
1064 | 2a10865c | Iustin Pop | except errors.HypervisorError, err:
|
1065 | 2cc6781a | Iustin Pop | _Fail("Failed to migrate instance: %s", err, exc=True) |
1066 | 2a10865c | Iustin Pop | |
1067 | 2a10865c | Iustin Pop | |
1068 | 821d1bd1 | Iustin Pop | def BlockdevCreate(disk, size, owner, on_primary, info): |
1069 | a8083063 | Iustin Pop | """Creates a block device for an instance.
|
1070 | a8083063 | Iustin Pop |
|
1071 | b1206984 | Iustin Pop | @type disk: L{objects.Disk}
|
1072 | b1206984 | Iustin Pop | @param disk: the object describing the disk we should create
|
1073 | b1206984 | Iustin Pop | @type size: int
|
1074 | b1206984 | Iustin Pop | @param size: the size of the physical underlying device, in MiB
|
1075 | b1206984 | Iustin Pop | @type owner: str
|
1076 | b1206984 | Iustin Pop | @param owner: the name of the instance for which disk is created,
|
1077 | b1206984 | Iustin Pop | used for device cache data
|
1078 | b1206984 | Iustin Pop | @type on_primary: boolean
|
1079 | b1206984 | Iustin Pop | @param on_primary: indicates if it is the primary node or not
|
1080 | b1206984 | Iustin Pop | @type info: string
|
1081 | b1206984 | Iustin Pop | @param info: string that will be sent to the physical device
|
1082 | b1206984 | Iustin Pop | creation, used for example to set (LVM) tags on LVs
|
1083 | b1206984 | Iustin Pop |
|
1084 | b1206984 | Iustin Pop | @return: the new unique_id of the device (this can sometime be
|
1085 | b1206984 | Iustin Pop | computed only after creation), or None. On secondary nodes,
|
1086 | b1206984 | Iustin Pop | it's not required to return anything.
|
1087 | a8083063 | Iustin Pop |
|
1088 | a8083063 | Iustin Pop | """
|
1089 | a8083063 | Iustin Pop | clist = [] |
1090 | a8083063 | Iustin Pop | if disk.children:
|
1091 | a8083063 | Iustin Pop | for child in disk.children: |
1092 | 1063abd1 | Iustin Pop | try:
|
1093 | 1063abd1 | Iustin Pop | crdev = _RecursiveAssembleBD(child, owner, on_primary) |
1094 | 1063abd1 | Iustin Pop | except errors.BlockDeviceError, err:
|
1095 | 2cc6781a | Iustin Pop | _Fail("Can't assemble device %s: %s", child, err)
|
1096 | a8083063 | Iustin Pop | if on_primary or disk.AssembleOnSecondary(): |
1097 | a8083063 | Iustin Pop | # we need the children open in case the device itself has to
|
1098 | a8083063 | Iustin Pop | # be assembled
|
1099 | 1063abd1 | Iustin Pop | try:
|
1100 | 1063abd1 | Iustin Pop | crdev.Open() |
1101 | 1063abd1 | Iustin Pop | except errors.BlockDeviceError, err:
|
1102 | 2cc6781a | Iustin Pop | _Fail("Can't make child '%s' read-write: %s", child, err)
|
1103 | a8083063 | Iustin Pop | clist.append(crdev) |
1104 | a8083063 | Iustin Pop | |
1105 | dab69e97 | Iustin Pop | try:
|
1106 | 464f8daf | Iustin Pop | device = bdev.Create(disk.dev_type, disk.physical_id, clist, disk.size) |
1107 | 1063abd1 | Iustin Pop | except errors.BlockDeviceError, err:
|
1108 | 2cc6781a | Iustin Pop | _Fail("Can't create block device: %s", err)
|
1109 | 6c626518 | Iustin Pop | |
1110 | a8083063 | Iustin Pop | if on_primary or disk.AssembleOnSecondary(): |
1111 | 1063abd1 | Iustin Pop | try:
|
1112 | 1063abd1 | Iustin Pop | device.Assemble() |
1113 | 1063abd1 | Iustin Pop | except errors.BlockDeviceError, err:
|
1114 | 2cc6781a | Iustin Pop | _Fail("Can't assemble device after creation, unusual event: %s", err)
|
1115 | e31c43f7 | Michael Hanselmann | device.SetSyncSpeed(constants.SYNC_SPEED) |
1116 | a8083063 | Iustin Pop | if on_primary or disk.OpenOnSecondary(): |
1117 | 1063abd1 | Iustin Pop | try:
|
1118 | 1063abd1 | Iustin Pop | device.Open(force=True)
|
1119 | 1063abd1 | Iustin Pop | except errors.BlockDeviceError, err:
|
1120 | 2cc6781a | Iustin Pop | _Fail("Can't make device r/w after creation, unusual event: %s", err)
|
1121 | 3f78eef2 | Iustin Pop | DevCacheManager.UpdateCache(device.dev_path, owner, |
1122 | 3f78eef2 | Iustin Pop | on_primary, disk.iv_name) |
1123 | a0c3fea1 | Michael Hanselmann | |
1124 | a0c3fea1 | Michael Hanselmann | device.SetInfo(info) |
1125 | a0c3fea1 | Michael Hanselmann | |
1126 | c26a6bd2 | Iustin Pop | return device.unique_id
|
1127 | a8083063 | Iustin Pop | |
1128 | a8083063 | Iustin Pop | |
1129 | 821d1bd1 | Iustin Pop | def BlockdevRemove(disk): |
1130 | a8083063 | Iustin Pop | """Remove a block device.
|
1131 | a8083063 | Iustin Pop |
|
1132 | 10c2650b | Iustin Pop | @note: This is intended to be called recursively.
|
1133 | 10c2650b | Iustin Pop |
|
1134 | c41eea6e | Iustin Pop | @type disk: L{objects.Disk}
|
1135 | 10c2650b | Iustin Pop | @param disk: the disk object we should remove
|
1136 | 10c2650b | Iustin Pop | @rtype: boolean
|
1137 | 10c2650b | Iustin Pop | @return: the success of the operation
|
1138 | a8083063 | Iustin Pop |
|
1139 | a8083063 | Iustin Pop | """
|
1140 | e1bc0878 | Iustin Pop | msgs = [] |
1141 | a8083063 | Iustin Pop | try:
|
1142 | bca2e7f4 | Iustin Pop | rdev = _RecursiveFindBD(disk) |
1143 | a8083063 | Iustin Pop | except errors.BlockDeviceError, err:
|
1144 | a8083063 | Iustin Pop | # probably can't attach
|
1145 | 18682bca | Iustin Pop | logging.info("Can't attach to device %s in remove", disk)
|
1146 | a8083063 | Iustin Pop | rdev = None
|
1147 | a8083063 | Iustin Pop | if rdev is not None: |
1148 | 3f78eef2 | Iustin Pop | r_path = rdev.dev_path |
1149 | e1bc0878 | Iustin Pop | try:
|
1150 | 0c6c04ec | Iustin Pop | rdev.Remove() |
1151 | e1bc0878 | Iustin Pop | except errors.BlockDeviceError, err:
|
1152 | e1bc0878 | Iustin Pop | msgs.append(str(err))
|
1153 | c26a6bd2 | Iustin Pop | if not msgs: |
1154 | 3f78eef2 | Iustin Pop | DevCacheManager.RemoveCache(r_path) |
1155 | e1bc0878 | Iustin Pop | |
1156 | a8083063 | Iustin Pop | if disk.children:
|
1157 | a8083063 | Iustin Pop | for child in disk.children: |
1158 | c26a6bd2 | Iustin Pop | try:
|
1159 | c26a6bd2 | Iustin Pop | BlockdevRemove(child) |
1160 | c26a6bd2 | Iustin Pop | except RPCFail, err:
|
1161 | c26a6bd2 | Iustin Pop | msgs.append(str(err))
|
1162 | e1bc0878 | Iustin Pop | |
1163 | c26a6bd2 | Iustin Pop | if msgs:
|
1164 | afdc3985 | Iustin Pop | _Fail("; ".join(msgs))
|
1165 | afdc3985 | Iustin Pop | |
1166 | a8083063 | Iustin Pop | |
1167 | 3f78eef2 | Iustin Pop | def _RecursiveAssembleBD(disk, owner, as_primary): |
1168 | a8083063 | Iustin Pop | """Activate a block device for an instance.
|
1169 | a8083063 | Iustin Pop |
|
1170 | a8083063 | Iustin Pop | This is run on the primary and secondary nodes for an instance.
|
1171 | a8083063 | Iustin Pop |
|
1172 | 10c2650b | Iustin Pop | @note: this function is called recursively.
|
1173 | a8083063 | Iustin Pop |
|
1174 | 10c2650b | Iustin Pop | @type disk: L{objects.Disk}
|
1175 | 10c2650b | Iustin Pop | @param disk: the disk we try to assemble
|
1176 | 10c2650b | Iustin Pop | @type owner: str
|
1177 | 10c2650b | Iustin Pop | @param owner: the name of the instance which owns the disk
|
1178 | 10c2650b | Iustin Pop | @type as_primary: boolean
|
1179 | 10c2650b | Iustin Pop | @param as_primary: if we should make the block device
|
1180 | 10c2650b | Iustin Pop | read/write
|
1181 | a8083063 | Iustin Pop |
|
1182 | 10c2650b | Iustin Pop | @return: the assembled device or None (in case no device
|
1183 | 10c2650b | Iustin Pop | was assembled)
|
1184 | 10c2650b | Iustin Pop | @raise errors.BlockDeviceError: in case there is an error
|
1185 | 10c2650b | Iustin Pop | during the activation of the children or the device
|
1186 | 10c2650b | Iustin Pop | itself
|
1187 | a8083063 | Iustin Pop |
|
1188 | a8083063 | Iustin Pop | """
|
1189 | a8083063 | Iustin Pop | children = [] |
1190 | a8083063 | Iustin Pop | if disk.children:
|
1191 | fc1dc9d7 | Iustin Pop | mcn = disk.ChildrenNeeded() |
1192 | fc1dc9d7 | Iustin Pop | if mcn == -1: |
1193 | fc1dc9d7 | Iustin Pop | mcn = 0 # max number of Nones allowed |
1194 | fc1dc9d7 | Iustin Pop | else:
|
1195 | fc1dc9d7 | Iustin Pop | mcn = len(disk.children) - mcn # max number of Nones |
1196 | a8083063 | Iustin Pop | for chld_disk in disk.children: |
1197 | fc1dc9d7 | Iustin Pop | try:
|
1198 | fc1dc9d7 | Iustin Pop | cdev = _RecursiveAssembleBD(chld_disk, owner, as_primary) |
1199 | fc1dc9d7 | Iustin Pop | except errors.BlockDeviceError, err:
|
1200 | 7803d4d3 | Iustin Pop | if children.count(None) >= mcn: |
1201 | fc1dc9d7 | Iustin Pop | raise
|
1202 | fc1dc9d7 | Iustin Pop | cdev = None
|
1203 | 1063abd1 | Iustin Pop | logging.error("Error in child activation (but continuing): %s",
|
1204 | 1063abd1 | Iustin Pop | str(err))
|
1205 | fc1dc9d7 | Iustin Pop | children.append(cdev) |
1206 | a8083063 | Iustin Pop | |
1207 | a8083063 | Iustin Pop | if as_primary or disk.AssembleOnSecondary(): |
1208 | 464f8daf | Iustin Pop | r_dev = bdev.Assemble(disk.dev_type, disk.physical_id, children, disk.size) |
1209 | e31c43f7 | Michael Hanselmann | r_dev.SetSyncSpeed(constants.SYNC_SPEED) |
1210 | a8083063 | Iustin Pop | result = r_dev |
1211 | a8083063 | Iustin Pop | if as_primary or disk.OpenOnSecondary(): |
1212 | a8083063 | Iustin Pop | r_dev.Open() |
1213 | 3f78eef2 | Iustin Pop | DevCacheManager.UpdateCache(r_dev.dev_path, owner, |
1214 | 3f78eef2 | Iustin Pop | as_primary, disk.iv_name) |
1215 | 3f78eef2 | Iustin Pop | |
1216 | a8083063 | Iustin Pop | else:
|
1217 | a8083063 | Iustin Pop | result = True
|
1218 | a8083063 | Iustin Pop | return result
|
1219 | a8083063 | Iustin Pop | |
1220 | a8083063 | Iustin Pop | |
1221 | 821d1bd1 | Iustin Pop | def BlockdevAssemble(disk, owner, as_primary): |
1222 | a8083063 | Iustin Pop | """Activate a block device for an instance.
|
1223 | a8083063 | Iustin Pop |
|
1224 | a8083063 | Iustin Pop | This is a wrapper over _RecursiveAssembleBD.
|
1225 | a8083063 | Iustin Pop |
|
1226 | b1206984 | Iustin Pop | @rtype: str or boolean
|
1227 | b1206984 | Iustin Pop | @return: a C{/dev/...} path for primary nodes, and
|
1228 | b1206984 | Iustin Pop | C{True} for secondary nodes
|
1229 | a8083063 | Iustin Pop |
|
1230 | a8083063 | Iustin Pop | """
|
1231 | 53c14ef1 | Iustin Pop | try:
|
1232 | 53c14ef1 | Iustin Pop | result = _RecursiveAssembleBD(disk, owner, as_primary) |
1233 | 53c14ef1 | Iustin Pop | if isinstance(result, bdev.BlockDev): |
1234 | 53c14ef1 | Iustin Pop | result = result.dev_path |
1235 | 53c14ef1 | Iustin Pop | except errors.BlockDeviceError, err:
|
1236 | afdc3985 | Iustin Pop | _Fail("Error while assembling disk: %s", err, exc=True) |
1237 | afdc3985 | Iustin Pop | |
1238 | c26a6bd2 | Iustin Pop | return result
|
1239 | a8083063 | Iustin Pop | |
1240 | a8083063 | Iustin Pop | |
1241 | 821d1bd1 | Iustin Pop | def BlockdevShutdown(disk): |
1242 | a8083063 | Iustin Pop | """Shut down a block device.
|
1243 | a8083063 | Iustin Pop |
|
1244 | c41eea6e | Iustin Pop | First, if the device is assembled (Attach() is successfull), then
|
1245 | c41eea6e | Iustin Pop | the device is shutdown. Then the children of the device are
|
1246 | c41eea6e | Iustin Pop | shutdown.
|
1247 | a8083063 | Iustin Pop |
|
1248 | a8083063 | Iustin Pop | This function is called recursively. Note that we don't cache the
|
1249 | a8083063 | Iustin Pop | children or such, as oppossed to assemble, shutdown of different
|
1250 | a8083063 | Iustin Pop | devices doesn't require that the upper device was active.
|
1251 | a8083063 | Iustin Pop |
|
1252 | 10c2650b | Iustin Pop | @type disk: L{objects.Disk}
|
1253 | 10c2650b | Iustin Pop | @param disk: the description of the disk we should
|
1254 | 10c2650b | Iustin Pop | shutdown
|
1255 | c26a6bd2 | Iustin Pop | @rtype: None
|
1256 | 10c2650b | Iustin Pop |
|
1257 | a8083063 | Iustin Pop | """
|
1258 | cacfd1fd | Iustin Pop | msgs = [] |
1259 | a8083063 | Iustin Pop | r_dev = _RecursiveFindBD(disk) |
1260 | a8083063 | Iustin Pop | if r_dev is not None: |
1261 | 3f78eef2 | Iustin Pop | r_path = r_dev.dev_path |
1262 | cacfd1fd | Iustin Pop | try:
|
1263 | 746f7476 | Iustin Pop | r_dev.Shutdown() |
1264 | 746f7476 | Iustin Pop | DevCacheManager.RemoveCache(r_path) |
1265 | cacfd1fd | Iustin Pop | except errors.BlockDeviceError, err:
|
1266 | cacfd1fd | Iustin Pop | msgs.append(str(err))
|
1267 | 746f7476 | Iustin Pop | |
1268 | a8083063 | Iustin Pop | if disk.children:
|
1269 | a8083063 | Iustin Pop | for child in disk.children: |
1270 | c26a6bd2 | Iustin Pop | try:
|
1271 | c26a6bd2 | Iustin Pop | BlockdevShutdown(child) |
1272 | c26a6bd2 | Iustin Pop | except RPCFail, err:
|
1273 | c26a6bd2 | Iustin Pop | msgs.append(str(err))
|
1274 | 746f7476 | Iustin Pop | |
1275 | c26a6bd2 | Iustin Pop | if msgs:
|
1276 | afdc3985 | Iustin Pop | _Fail("; ".join(msgs))
|
1277 | a8083063 | Iustin Pop | |
1278 | a8083063 | Iustin Pop | |
1279 | 821d1bd1 | Iustin Pop | def BlockdevAddchildren(parent_cdev, new_cdevs): |
1280 | 153d9724 | Iustin Pop | """Extend a mirrored block device.
|
1281 | a8083063 | Iustin Pop |
|
1282 | 10c2650b | Iustin Pop | @type parent_cdev: L{objects.Disk}
|
1283 | 10c2650b | Iustin Pop | @param parent_cdev: the disk to which we should add children
|
1284 | 10c2650b | Iustin Pop | @type new_cdevs: list of L{objects.Disk}
|
1285 | 10c2650b | Iustin Pop | @param new_cdevs: the list of children which we should add
|
1286 | c26a6bd2 | Iustin Pop | @rtype: None
|
1287 | 10c2650b | Iustin Pop |
|
1288 | a8083063 | Iustin Pop | """
|
1289 | bca2e7f4 | Iustin Pop | parent_bdev = _RecursiveFindBD(parent_cdev) |
1290 | 153d9724 | Iustin Pop | if parent_bdev is None: |
1291 | 2cc6781a | Iustin Pop | _Fail("Can't find parent device '%s' in add children", parent_cdev)
|
1292 | 153d9724 | Iustin Pop | new_bdevs = [_RecursiveFindBD(disk) for disk in new_cdevs] |
1293 | 153d9724 | Iustin Pop | if new_bdevs.count(None) > 0: |
1294 | 2cc6781a | Iustin Pop | _Fail("Can't find new device(s) to add: %s:%s", new_bdevs, new_cdevs)
|
1295 | 153d9724 | Iustin Pop | parent_bdev.AddChildren(new_bdevs) |
1296 | a8083063 | Iustin Pop | |
1297 | a8083063 | Iustin Pop | |
1298 | 821d1bd1 | Iustin Pop | def BlockdevRemovechildren(parent_cdev, new_cdevs): |
1299 | 153d9724 | Iustin Pop | """Shrink a mirrored block device.
|
1300 | a8083063 | Iustin Pop |
|
1301 | 10c2650b | Iustin Pop | @type parent_cdev: L{objects.Disk}
|
1302 | 10c2650b | Iustin Pop | @param parent_cdev: the disk from which we should remove children
|
1303 | 10c2650b | Iustin Pop | @type new_cdevs: list of L{objects.Disk}
|
1304 | 10c2650b | Iustin Pop | @param new_cdevs: the list of children which we should remove
|
1305 | c26a6bd2 | Iustin Pop | @rtype: None
|
1306 | 10c2650b | Iustin Pop |
|
1307 | a8083063 | Iustin Pop | """
|
1308 | 153d9724 | Iustin Pop | parent_bdev = _RecursiveFindBD(parent_cdev) |
1309 | 153d9724 | Iustin Pop | if parent_bdev is None: |
1310 | 2cc6781a | Iustin Pop | _Fail("Can't find parent device '%s' in remove children", parent_cdev)
|
1311 | e739bd57 | Iustin Pop | devs = [] |
1312 | e739bd57 | Iustin Pop | for disk in new_cdevs: |
1313 | e739bd57 | Iustin Pop | rpath = disk.StaticDevPath() |
1314 | e739bd57 | Iustin Pop | if rpath is None: |
1315 | e739bd57 | Iustin Pop | bd = _RecursiveFindBD(disk) |
1316 | e739bd57 | Iustin Pop | if bd is None: |
1317 | 2cc6781a | Iustin Pop | _Fail("Can't find device %s while removing children", disk)
|
1318 | e739bd57 | Iustin Pop | else:
|
1319 | e739bd57 | Iustin Pop | devs.append(bd.dev_path) |
1320 | e739bd57 | Iustin Pop | else:
|
1321 | e739bd57 | Iustin Pop | devs.append(rpath) |
1322 | e739bd57 | Iustin Pop | parent_bdev.RemoveChildren(devs) |
1323 | a8083063 | Iustin Pop | |
1324 | a8083063 | Iustin Pop | |
1325 | 821d1bd1 | Iustin Pop | def BlockdevGetmirrorstatus(disks): |
1326 | a8083063 | Iustin Pop | """Get the mirroring status of a list of devices.
|
1327 | a8083063 | Iustin Pop |
|
1328 | 10c2650b | Iustin Pop | @type disks: list of L{objects.Disk}
|
1329 | 10c2650b | Iustin Pop | @param disks: the list of disks which we should query
|
1330 | 10c2650b | Iustin Pop | @rtype: disk
|
1331 | 10c2650b | Iustin Pop | @return:
|
1332 | 10c2650b | Iustin Pop | a list of (mirror_done, estimated_time) tuples, which
|
1333 | c41eea6e | Iustin Pop | are the result of L{bdev.BlockDev.CombinedSyncStatus}
|
1334 | 10c2650b | Iustin Pop | @raise errors.BlockDeviceError: if any of the disks cannot be
|
1335 | 10c2650b | Iustin Pop | found
|
1336 | a8083063 | Iustin Pop |
|
1337 | a8083063 | Iustin Pop | """
|
1338 | a8083063 | Iustin Pop | stats = [] |
1339 | a8083063 | Iustin Pop | for dsk in disks: |
1340 | a8083063 | Iustin Pop | rbd = _RecursiveFindBD(dsk) |
1341 | a8083063 | Iustin Pop | if rbd is None: |
1342 | 3efa9051 | Iustin Pop | _Fail("Can't find device %s", dsk)
|
1343 | a8083063 | Iustin Pop | stats.append(rbd.CombinedSyncStatus()) |
1344 | c26a6bd2 | Iustin Pop | return stats
|
1345 | a8083063 | Iustin Pop | |
1346 | a8083063 | Iustin Pop | |
1347 | bca2e7f4 | Iustin Pop | def _RecursiveFindBD(disk): |
1348 | a8083063 | Iustin Pop | """Check if a device is activated.
|
1349 | a8083063 | Iustin Pop |
|
1350 | a8083063 | Iustin Pop | If so, return informations about the real device.
|
1351 | a8083063 | Iustin Pop |
|
1352 | 10c2650b | Iustin Pop | @type disk: L{objects.Disk}
|
1353 | 10c2650b | Iustin Pop | @param disk: the disk object we need to find
|
1354 | a8083063 | Iustin Pop |
|
1355 | 10c2650b | Iustin Pop | @return: None if the device can't be found,
|
1356 | 10c2650b | Iustin Pop | otherwise the device instance
|
1357 | a8083063 | Iustin Pop |
|
1358 | a8083063 | Iustin Pop | """
|
1359 | a8083063 | Iustin Pop | children = [] |
1360 | a8083063 | Iustin Pop | if disk.children:
|
1361 | a8083063 | Iustin Pop | for chdisk in disk.children: |
1362 | a8083063 | Iustin Pop | children.append(_RecursiveFindBD(chdisk)) |
1363 | a8083063 | Iustin Pop | |
1364 | 464f8daf | Iustin Pop | return bdev.FindDevice(disk.dev_type, disk.physical_id, children, disk.size)
|
1365 | a8083063 | Iustin Pop | |
1366 | a8083063 | Iustin Pop | |
1367 | 821d1bd1 | Iustin Pop | def BlockdevFind(disk): |
1368 | a8083063 | Iustin Pop | """Check if a device is activated.
|
1369 | a8083063 | Iustin Pop |
|
1370 | 10c2650b | Iustin Pop | If it is, return informations about the real device.
|
1371 | a8083063 | Iustin Pop |
|
1372 | 10c2650b | Iustin Pop | @type disk: L{objects.Disk}
|
1373 | 10c2650b | Iustin Pop | @param disk: the disk to find
|
1374 | 10c2650b | Iustin Pop | @rtype: None or tuple
|
1375 | 10c2650b | Iustin Pop | @return: None if the disk cannot be found, otherwise a
|
1376 | 10c2650b | Iustin Pop | tuple (device_path, major, minor, sync_percent,
|
1377 | 10c2650b | Iustin Pop | estimated_time, is_degraded)
|
1378 | a8083063 | Iustin Pop |
|
1379 | a8083063 | Iustin Pop | """
|
1380 | 23829f6f | Iustin Pop | try:
|
1381 | 23829f6f | Iustin Pop | rbd = _RecursiveFindBD(disk) |
1382 | 23829f6f | Iustin Pop | except errors.BlockDeviceError, err:
|
1383 | 2cc6781a | Iustin Pop | _Fail("Failed to find device: %s", err, exc=True) |
1384 | a8083063 | Iustin Pop | if rbd is None: |
1385 | c26a6bd2 | Iustin Pop | return None |
1386 | c26a6bd2 | Iustin Pop | return (rbd.dev_path, rbd.major, rbd.minor) + rbd.GetSyncStatus()
|
1387 | a8083063 | Iustin Pop | |
1388 | a8083063 | Iustin Pop | |
1389 | a8083063 | Iustin Pop | def UploadFile(file_name, data, mode, uid, gid, atime, mtime): |
1390 | a8083063 | Iustin Pop | """Write a file to the filesystem.
|
1391 | a8083063 | Iustin Pop |
|
1392 | a8083063 | Iustin Pop | This allows the master to overwrite(!) a file. It will only perform
|
1393 | a8083063 | Iustin Pop | the operation if the file belongs to a list of configuration files.
|
1394 | a8083063 | Iustin Pop |
|
1395 | 10c2650b | Iustin Pop | @type file_name: str
|
1396 | 10c2650b | Iustin Pop | @param file_name: the target file name
|
1397 | 10c2650b | Iustin Pop | @type data: str
|
1398 | 10c2650b | Iustin Pop | @param data: the new contents of the file
|
1399 | 10c2650b | Iustin Pop | @type mode: int
|
1400 | 10c2650b | Iustin Pop | @param mode: the mode to give the file (can be None)
|
1401 | 10c2650b | Iustin Pop | @type uid: int
|
1402 | 10c2650b | Iustin Pop | @param uid: the owner of the file (can be -1 for default)
|
1403 | 10c2650b | Iustin Pop | @type gid: int
|
1404 | 10c2650b | Iustin Pop | @param gid: the group of the file (can be -1 for default)
|
1405 | 10c2650b | Iustin Pop | @type atime: float
|
1406 | 10c2650b | Iustin Pop | @param atime: the atime to set on the file (can be None)
|
1407 | 10c2650b | Iustin Pop | @type mtime: float
|
1408 | 10c2650b | Iustin Pop | @param mtime: the mtime to set on the file (can be None)
|
1409 | c26a6bd2 | Iustin Pop | @rtype: None
|
1410 | 10c2650b | Iustin Pop |
|
1411 | a8083063 | Iustin Pop | """
|
1412 | a8083063 | Iustin Pop | if not os.path.isabs(file_name): |
1413 | 2cc6781a | Iustin Pop | _Fail("Filename passed to UploadFile is not absolute: '%s'", file_name)
|
1414 | a8083063 | Iustin Pop | |
1415 | 4501a443 | Guido Trotter | allowed_files = set([
|
1416 | 97628462 | Iustin Pop | constants.CLUSTER_CONF_FILE, |
1417 | 97628462 | Iustin Pop | constants.ETC_HOSTS, |
1418 | 97628462 | Iustin Pop | constants.SSH_KNOWN_HOSTS_FILE, |
1419 | 90fae627 | Guido Trotter | constants.VNC_PASSWORD_FILE, |
1420 | 4501a443 | Guido Trotter | constants.RAPI_CERT_FILE, |
1421 | 4501a443 | Guido Trotter | constants.RAPI_USERS_FILE, |
1422 | 4501a443 | Guido Trotter | ]) |
1423 | 4501a443 | Guido Trotter | |
1424 | 4501a443 | Guido Trotter | for hv_name in constants.HYPER_TYPES: |
1425 | 4501a443 | Guido Trotter | hv_class = hypervisor.GetHypervisor(hv_name) |
1426 | 4501a443 | Guido Trotter | allowed_files.update(hv_class.GetAncillaryFiles()) |
1427 | afee8008 | Michael Hanselmann | |
1428 | 553f1c1d | Michael Hanselmann | if file_name not in allowed_files: |
1429 | 2cc6781a | Iustin Pop | _Fail("Filename passed to UploadFile not in allowed upload targets: '%s'",
|
1430 | 2cc6781a | Iustin Pop | file_name) |
1431 | a8083063 | Iustin Pop | |
1432 | 12bce260 | Michael Hanselmann | raw_data = _Decompress(data) |
1433 | 12bce260 | Michael Hanselmann | |
1434 | 12bce260 | Michael Hanselmann | utils.WriteFile(file_name, data=raw_data, mode=mode, uid=uid, gid=gid, |
1435 | 41a57aab | Michael Hanselmann | atime=atime, mtime=mtime) |
1436 | a8083063 | Iustin Pop | |
1437 | 386b57af | Iustin Pop | |
1438 | 03d1dba2 | Michael Hanselmann | def WriteSsconfFiles(values): |
1439 | 89b14f05 | Iustin Pop | """Update all ssconf files.
|
1440 | 89b14f05 | Iustin Pop |
|
1441 | 89b14f05 | Iustin Pop | Wrapper around the SimpleStore.WriteFiles.
|
1442 | 89b14f05 | Iustin Pop |
|
1443 | 89b14f05 | Iustin Pop | """
|
1444 | 89b14f05 | Iustin Pop | ssconf.SimpleStore().WriteFiles(values) |
1445 | 6ddc95ec | Michael Hanselmann | |
1446 | 6ddc95ec | Michael Hanselmann | |
1447 | a8083063 | Iustin Pop | def _ErrnoOrStr(err): |
1448 | a8083063 | Iustin Pop | """Format an EnvironmentError exception.
|
1449 | a8083063 | Iustin Pop |
|
1450 | 10c2650b | Iustin Pop | If the L{err} argument has an errno attribute, it will be looked up
|
1451 | 10c2650b | Iustin Pop | and converted into a textual C{E...} description. Otherwise the
|
1452 | 10c2650b | Iustin Pop | string representation of the error will be returned.
|
1453 | 10c2650b | Iustin Pop |
|
1454 | 10c2650b | Iustin Pop | @type err: L{EnvironmentError}
|
1455 | 10c2650b | Iustin Pop | @param err: the exception to format
|
1456 | a8083063 | Iustin Pop |
|
1457 | a8083063 | Iustin Pop | """
|
1458 | a8083063 | Iustin Pop | if hasattr(err, 'errno'): |
1459 | a8083063 | Iustin Pop | detail = errno.errorcode[err.errno] |
1460 | a8083063 | Iustin Pop | else:
|
1461 | a8083063 | Iustin Pop | detail = str(err)
|
1462 | a8083063 | Iustin Pop | return detail
|
1463 | a8083063 | Iustin Pop | |
1464 | 5d0fe286 | Iustin Pop | |
1465 | 7ead9575 | Guido Trotter | def _OSOndiskAPIVersion(name, os_dir): |
1466 | 2f8598a5 | Alexander Schreiber | """Compute and return the API version of a given OS.
|
1467 | a8083063 | Iustin Pop |
|
1468 | 10c2650b | Iustin Pop | This function will try to read the API version of the OS given by
|
1469 | 7c3d51d4 | Guido Trotter | the 'name' parameter and residing in the 'os_dir' directory.
|
1470 | 7c3d51d4 | Guido Trotter |
|
1471 | 10c2650b | Iustin Pop | @type name: str
|
1472 | 10c2650b | Iustin Pop | @param name: the OS name we should look for
|
1473 | 10c2650b | Iustin Pop | @type os_dir: str
|
1474 | 10c2650b | Iustin Pop | @param os_dir: the directory inwhich we should look for the OS
|
1475 | 8e70b181 | Iustin Pop | @rtype: tuple
|
1476 | 8e70b181 | Iustin Pop | @return: tuple (status, data) with status denoting the validity and
|
1477 | 8e70b181 | Iustin Pop | data holding either the vaid versions or an error message
|
1478 | a8083063 | Iustin Pop |
|
1479 | a8083063 | Iustin Pop | """
|
1480 | a8083063 | Iustin Pop | api_file = os.path.sep.join([os_dir, "ganeti_api_version"])
|
1481 | a8083063 | Iustin Pop | |
1482 | a8083063 | Iustin Pop | try:
|
1483 | a8083063 | Iustin Pop | st = os.stat(api_file) |
1484 | a8083063 | Iustin Pop | except EnvironmentError, err: |
1485 | 255dcebd | Iustin Pop | return False, ("Required file 'ganeti_api_version' file not" |
1486 | 255dcebd | Iustin Pop | " found under path %s: %s" % (os_dir, _ErrnoOrStr(err)))
|
1487 | a8083063 | Iustin Pop | |
1488 | a8083063 | Iustin Pop | if not stat.S_ISREG(stat.S_IFMT(st.st_mode)): |
1489 | 255dcebd | Iustin Pop | return False, ("File 'ganeti_api_version' file at %s is not" |
1490 | 255dcebd | Iustin Pop | " a regular file" % os_dir)
|
1491 | a8083063 | Iustin Pop | |
1492 | a8083063 | Iustin Pop | try:
|
1493 | 3374afa9 | Guido Trotter | api_versions = utils.ReadFile(api_file).splitlines() |
1494 | a8083063 | Iustin Pop | except EnvironmentError, err: |
1495 | 255dcebd | Iustin Pop | return False, ("Error while reading the API version file at %s: %s" % |
1496 | 255dcebd | Iustin Pop | (api_file, _ErrnoOrStr(err))) |
1497 | a8083063 | Iustin Pop | |
1498 | 082a7f91 | Guido Trotter | api_versions = [version.strip() for version in api_versions] |
1499 | a8083063 | Iustin Pop | try:
|
1500 | 082a7f91 | Guido Trotter | api_versions = [int(version) for version in api_versions] |
1501 | a8083063 | Iustin Pop | except (TypeError, ValueError), err: |
1502 | 255dcebd | Iustin Pop | return False, ("API version(s) can't be converted to integer: %s" % |
1503 | 255dcebd | Iustin Pop | str(err))
|
1504 | a8083063 | Iustin Pop | |
1505 | 255dcebd | Iustin Pop | return True, api_versions |
1506 | a8083063 | Iustin Pop | |
1507 | 386b57af | Iustin Pop | |
1508 | 7c3d51d4 | Guido Trotter | def DiagnoseOS(top_dirs=None): |
1509 | a8083063 | Iustin Pop | """Compute the validity for all OSes.
|
1510 | a8083063 | Iustin Pop |
|
1511 | 10c2650b | Iustin Pop | @type top_dirs: list
|
1512 | 10c2650b | Iustin Pop | @param top_dirs: the list of directories in which to
|
1513 | 10c2650b | Iustin Pop | search (if not given defaults to
|
1514 | 10c2650b | Iustin Pop | L{constants.OS_SEARCH_PATH})
|
1515 | 10c2650b | Iustin Pop | @rtype: list of L{objects.OS}
|
1516 | 255dcebd | Iustin Pop | @return: a list of tuples (name, path, status, diagnose)
|
1517 | 255dcebd | Iustin Pop | for all (potential) OSes under all search paths, where:
|
1518 | 255dcebd | Iustin Pop | - name is the (potential) OS name
|
1519 | 255dcebd | Iustin Pop | - path is the full path to the OS
|
1520 | 255dcebd | Iustin Pop | - status True/False is the validity of the OS
|
1521 | 255dcebd | Iustin Pop | - diagnose is the error message for an invalid OS, otherwise empty
|
1522 | a8083063 | Iustin Pop |
|
1523 | a8083063 | Iustin Pop | """
|
1524 | 7c3d51d4 | Guido Trotter | if top_dirs is None: |
1525 | 7c3d51d4 | Guido Trotter | top_dirs = constants.OS_SEARCH_PATH |
1526 | a8083063 | Iustin Pop | |
1527 | a8083063 | Iustin Pop | result = [] |
1528 | 65fe4693 | Iustin Pop | for dir_name in top_dirs: |
1529 | 65fe4693 | Iustin Pop | if os.path.isdir(dir_name):
|
1530 | 7c3d51d4 | Guido Trotter | try:
|
1531 | 65fe4693 | Iustin Pop | f_names = utils.ListVisibleFiles(dir_name) |
1532 | 7c3d51d4 | Guido Trotter | except EnvironmentError, err: |
1533 | 29921401 | Iustin Pop | logging.exception("Can't list the OS directory %s: %s", dir_name, err)
|
1534 | 7c3d51d4 | Guido Trotter | break
|
1535 | 7c3d51d4 | Guido Trotter | for name in f_names: |
1536 | 255dcebd | Iustin Pop | os_path = os.path.sep.join([dir_name, name]) |
1537 | 255dcebd | Iustin Pop | status, os_inst = _TryOSFromDisk(name, base_dir=dir_name) |
1538 | 255dcebd | Iustin Pop | if status:
|
1539 | 255dcebd | Iustin Pop | diagnose = ""
|
1540 | 255dcebd | Iustin Pop | else:
|
1541 | 255dcebd | Iustin Pop | diagnose = os_inst |
1542 | 255dcebd | Iustin Pop | result.append((name, os_path, status, diagnose)) |
1543 | a8083063 | Iustin Pop | |
1544 | c26a6bd2 | Iustin Pop | return result
|
1545 | a8083063 | Iustin Pop | |
1546 | a8083063 | Iustin Pop | |
1547 | 255dcebd | Iustin Pop | def _TryOSFromDisk(name, base_dir=None): |
1548 | a8083063 | Iustin Pop | """Create an OS instance from disk.
|
1549 | a8083063 | Iustin Pop |
|
1550 | a8083063 | Iustin Pop | This function will return an OS instance if the given name is a
|
1551 | 8e70b181 | Iustin Pop | valid OS name.
|
1552 | a8083063 | Iustin Pop |
|
1553 | 8ee4dc80 | Guido Trotter | @type base_dir: string
|
1554 | 8ee4dc80 | Guido Trotter | @keyword base_dir: Base directory containing OS installations.
|
1555 | 8ee4dc80 | Guido Trotter | Defaults to a search in all the OS_SEARCH_PATH dirs.
|
1556 | 255dcebd | Iustin Pop | @rtype: tuple
|
1557 | 255dcebd | Iustin Pop | @return: success and either the OS instance if we find a valid one,
|
1558 | 255dcebd | Iustin Pop | or error message
|
1559 | 7c3d51d4 | Guido Trotter |
|
1560 | a8083063 | Iustin Pop | """
|
1561 | 56bcd3f4 | Guido Trotter | if base_dir is None: |
1562 | 57c177af | Iustin Pop | os_dir = utils.FindFile(name, constants.OS_SEARCH_PATH, os.path.isdir) |
1563 | c34c0cfd | Iustin Pop | if os_dir is None: |
1564 | 255dcebd | Iustin Pop | return False, "Directory for OS %s not found in search path" % name |
1565 | c34c0cfd | Iustin Pop | else:
|
1566 | c34c0cfd | Iustin Pop | os_dir = os.path.sep.join([base_dir, name]) |
1567 | a8083063 | Iustin Pop | |
1568 | 7ead9575 | Guido Trotter | status, api_versions = _OSOndiskAPIVersion(name, os_dir) |
1569 | 255dcebd | Iustin Pop | if not status: |
1570 | 255dcebd | Iustin Pop | # push the error up
|
1571 | 255dcebd | Iustin Pop | return status, api_versions
|
1572 | a8083063 | Iustin Pop | |
1573 | 082a7f91 | Guido Trotter | if constants.OS_API_VERSION not in api_versions: |
1574 | 255dcebd | Iustin Pop | return False, ("API version mismatch for path '%s': found %s, want %s." % |
1575 | 255dcebd | Iustin Pop | (os_dir, api_versions, constants.OS_API_VERSION)) |
1576 | a8083063 | Iustin Pop | |
1577 | a8083063 | Iustin Pop | # OS Scripts dictionary, we will populate it with the actual script names
|
1578 | 62dbbe7e | Guido Trotter | os_scripts = dict.fromkeys(constants.OS_SCRIPTS)
|
1579 | a8083063 | Iustin Pop | |
1580 | a8083063 | Iustin Pop | for script in os_scripts: |
1581 | a8083063 | Iustin Pop | os_scripts[script] = os.path.sep.join([os_dir, script]) |
1582 | a8083063 | Iustin Pop | |
1583 | a8083063 | Iustin Pop | try:
|
1584 | a8083063 | Iustin Pop | st = os.stat(os_scripts[script]) |
1585 | a8083063 | Iustin Pop | except EnvironmentError, err: |
1586 | 255dcebd | Iustin Pop | return False, ("Script '%s' under path '%s' is missing (%s)" % |
1587 | 255dcebd | Iustin Pop | (script, os_dir, _ErrnoOrStr(err))) |
1588 | a8083063 | Iustin Pop | |
1589 | a8083063 | Iustin Pop | if stat.S_IMODE(st.st_mode) & stat.S_IXUSR != stat.S_IXUSR:
|
1590 | 255dcebd | Iustin Pop | return False, ("Script '%s' under path '%s' is not executable" % |
1591 | 255dcebd | Iustin Pop | (script, os_dir)) |
1592 | a8083063 | Iustin Pop | |
1593 | a8083063 | Iustin Pop | if not stat.S_ISREG(stat.S_IFMT(st.st_mode)): |
1594 | 255dcebd | Iustin Pop | return False, ("Script '%s' under path '%s' is not a regular file" % |
1595 | 255dcebd | Iustin Pop | (script, os_dir)) |
1596 | 255dcebd | Iustin Pop | |
1597 | 8e70b181 | Iustin Pop | os_obj = objects.OS(name=name, path=os_dir, |
1598 | 255dcebd | Iustin Pop | create_script=os_scripts[constants.OS_SCRIPT_CREATE], |
1599 | 255dcebd | Iustin Pop | export_script=os_scripts[constants.OS_SCRIPT_EXPORT], |
1600 | 255dcebd | Iustin Pop | import_script=os_scripts[constants.OS_SCRIPT_IMPORT], |
1601 | 255dcebd | Iustin Pop | rename_script=os_scripts[constants.OS_SCRIPT_RENAME], |
1602 | 255dcebd | Iustin Pop | api_versions=api_versions) |
1603 | 255dcebd | Iustin Pop | return True, os_obj |
1604 | 255dcebd | Iustin Pop | |
1605 | 255dcebd | Iustin Pop | |
1606 | 255dcebd | Iustin Pop | def OSFromDisk(name, base_dir=None): |
1607 | 255dcebd | Iustin Pop | """Create an OS instance from disk.
|
1608 | 255dcebd | Iustin Pop |
|
1609 | 255dcebd | Iustin Pop | This function will return an OS instance if the given name is a
|
1610 | 255dcebd | Iustin Pop | valid OS name. Otherwise, it will raise an appropriate
|
1611 | 255dcebd | Iustin Pop | L{RPCFail} exception, detailing why this is not a valid OS.
|
1612 | 255dcebd | Iustin Pop |
|
1613 | 255dcebd | Iustin Pop | This is just a wrapper over L{_TryOSFromDisk}, which doesn't raise
|
1614 | 255dcebd | Iustin Pop | an exception but returns true/false status data.
|
1615 | 255dcebd | Iustin Pop |
|
1616 | 255dcebd | Iustin Pop | @type base_dir: string
|
1617 | 255dcebd | Iustin Pop | @keyword base_dir: Base directory containing OS installations.
|
1618 | 255dcebd | Iustin Pop | Defaults to a search in all the OS_SEARCH_PATH dirs.
|
1619 | 255dcebd | Iustin Pop | @rtype: L{objects.OS}
|
1620 | 255dcebd | Iustin Pop | @return: the OS instance if we find a valid one
|
1621 | 255dcebd | Iustin Pop | @raise RPCFail: if we don't find a valid OS
|
1622 | 255dcebd | Iustin Pop |
|
1623 | 255dcebd | Iustin Pop | """
|
1624 | 255dcebd | Iustin Pop | status, payload = _TryOSFromDisk(name, base_dir) |
1625 | 255dcebd | Iustin Pop | |
1626 | 255dcebd | Iustin Pop | if not status: |
1627 | 255dcebd | Iustin Pop | _Fail(payload) |
1628 | a8083063 | Iustin Pop | |
1629 | 255dcebd | Iustin Pop | return payload
|
1630 | a8083063 | Iustin Pop | |
1631 | a8083063 | Iustin Pop | |
1632 | 2266edb2 | Guido Trotter | def OSEnvironment(instance, debug=0): |
1633 | 2266edb2 | Guido Trotter | """Calculate the environment for an os script.
|
1634 | 2266edb2 | Guido Trotter |
|
1635 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
1636 | 2266edb2 | Guido Trotter | @param instance: target instance for the os script run
|
1637 | 2266edb2 | Guido Trotter | @type debug: integer
|
1638 | 10c2650b | Iustin Pop | @param debug: debug level (0 or 1, for OS Api 10)
|
1639 | 2266edb2 | Guido Trotter | @rtype: dict
|
1640 | 2266edb2 | Guido Trotter | @return: dict of environment variables
|
1641 | 10c2650b | Iustin Pop | @raise errors.BlockDeviceError: if the block device
|
1642 | 10c2650b | Iustin Pop | cannot be found
|
1643 | 2266edb2 | Guido Trotter |
|
1644 | 2266edb2 | Guido Trotter | """
|
1645 | 2266edb2 | Guido Trotter | result = {} |
1646 | 2266edb2 | Guido Trotter | result['OS_API_VERSION'] = '%d' % constants.OS_API_VERSION |
1647 | 2266edb2 | Guido Trotter | result['INSTANCE_NAME'] = instance.name
|
1648 | 15552312 | Iustin Pop | result['INSTANCE_OS'] = instance.os
|
1649 | 2266edb2 | Guido Trotter | result['HYPERVISOR'] = instance.hypervisor
|
1650 | 2266edb2 | Guido Trotter | result['DISK_COUNT'] = '%d' % len(instance.disks) |
1651 | 2266edb2 | Guido Trotter | result['NIC_COUNT'] = '%d' % len(instance.nics) |
1652 | 2266edb2 | Guido Trotter | result['DEBUG_LEVEL'] = '%d' % debug |
1653 | 2266edb2 | Guido Trotter | for idx, disk in enumerate(instance.disks): |
1654 | 2266edb2 | Guido Trotter | real_disk = _RecursiveFindBD(disk) |
1655 | 2266edb2 | Guido Trotter | if real_disk is None: |
1656 | 2266edb2 | Guido Trotter | raise errors.BlockDeviceError("Block device '%s' is not set up" % |
1657 | 2266edb2 | Guido Trotter | str(disk))
|
1658 | 2266edb2 | Guido Trotter | real_disk.Open() |
1659 | 2266edb2 | Guido Trotter | result['DISK_%d_PATH' % idx] = real_disk.dev_path
|
1660 | 15552312 | Iustin Pop | result['DISK_%d_ACCESS' % idx] = disk.mode
|
1661 | 2266edb2 | Guido Trotter | if constants.HV_DISK_TYPE in instance.hvparams: |
1662 | 2266edb2 | Guido Trotter | result['DISK_%d_FRONTEND_TYPE' % idx] = \
|
1663 | 2266edb2 | Guido Trotter | instance.hvparams[constants.HV_DISK_TYPE] |
1664 | 2266edb2 | Guido Trotter | if disk.dev_type in constants.LDS_BLOCK: |
1665 | 2266edb2 | Guido Trotter | result['DISK_%d_BACKEND_TYPE' % idx] = 'block' |
1666 | 2266edb2 | Guido Trotter | elif disk.dev_type == constants.LD_FILE:
|
1667 | 2266edb2 | Guido Trotter | result['DISK_%d_BACKEND_TYPE' % idx] = \
|
1668 | 2266edb2 | Guido Trotter | 'file:%s' % disk.physical_id[0] |
1669 | 2266edb2 | Guido Trotter | for idx, nic in enumerate(instance.nics): |
1670 | 2266edb2 | Guido Trotter | result['NIC_%d_MAC' % idx] = nic.mac
|
1671 | 2266edb2 | Guido Trotter | if nic.ip:
|
1672 | 2266edb2 | Guido Trotter | result['NIC_%d_IP' % idx] = nic.ip
|
1673 | 1ba9227f | Guido Trotter | result['NIC_%d_MODE' % idx] = nic.nicparams[constants.NIC_MODE]
|
1674 | 1ba9227f | Guido Trotter | if nic.nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
|
1675 | 1ba9227f | Guido Trotter | result['NIC_%d_BRIDGE' % idx] = nic.nicparams[constants.NIC_LINK]
|
1676 | 1ba9227f | Guido Trotter | if nic.nicparams[constants.NIC_LINK]:
|
1677 | 1ba9227f | Guido Trotter | result['NIC_%d_LINK' % idx] = nic.nicparams[constants.NIC_LINK]
|
1678 | 2266edb2 | Guido Trotter | if constants.HV_NIC_TYPE in instance.hvparams: |
1679 | 2266edb2 | Guido Trotter | result['NIC_%d_FRONTEND_TYPE' % idx] = \
|
1680 | 2266edb2 | Guido Trotter | instance.hvparams[constants.HV_NIC_TYPE] |
1681 | 2266edb2 | Guido Trotter | |
1682 | 67fc3042 | Iustin Pop | for source, kind in [(instance.beparams, "BE"), (instance.hvparams, "HV")]: |
1683 | 67fc3042 | Iustin Pop | for key, value in source.items(): |
1684 | 030b218a | Iustin Pop | result["INSTANCE_%s_%s" % (kind, key)] = str(value) |
1685 | 67fc3042 | Iustin Pop | |
1686 | 2266edb2 | Guido Trotter | return result
|
1687 | a8083063 | Iustin Pop | |
1688 | 821d1bd1 | Iustin Pop | def BlockdevGrow(disk, amount): |
1689 | 594609c0 | Iustin Pop | """Grow a stack of block devices.
|
1690 | 594609c0 | Iustin Pop |
|
1691 | 594609c0 | Iustin Pop | This function is called recursively, with the childrens being the
|
1692 | 10c2650b | Iustin Pop | first ones to resize.
|
1693 | 594609c0 | Iustin Pop |
|
1694 | 10c2650b | Iustin Pop | @type disk: L{objects.Disk}
|
1695 | 10c2650b | Iustin Pop | @param disk: the disk to be grown
|
1696 | 10c2650b | Iustin Pop | @rtype: (status, result)
|
1697 | 10c2650b | Iustin Pop | @return: a tuple with the status of the operation
|
1698 | 10c2650b | Iustin Pop | (True/False), and the errors message if status
|
1699 | 10c2650b | Iustin Pop | is False
|
1700 | 594609c0 | Iustin Pop |
|
1701 | 594609c0 | Iustin Pop | """
|
1702 | 594609c0 | Iustin Pop | r_dev = _RecursiveFindBD(disk) |
1703 | 594609c0 | Iustin Pop | if r_dev is None: |
1704 | afdc3985 | Iustin Pop | _Fail("Cannot find block device %s", disk)
|
1705 | 594609c0 | Iustin Pop | |
1706 | 594609c0 | Iustin Pop | try:
|
1707 | 594609c0 | Iustin Pop | r_dev.Grow(amount) |
1708 | 594609c0 | Iustin Pop | except errors.BlockDeviceError, err:
|
1709 | 2cc6781a | Iustin Pop | _Fail("Failed to grow block device: %s", err, exc=True) |
1710 | 594609c0 | Iustin Pop | |
1711 | 594609c0 | Iustin Pop | |
1712 | 821d1bd1 | Iustin Pop | def BlockdevSnapshot(disk): |
1713 | a8083063 | Iustin Pop | """Create a snapshot copy of a block device.
|
1714 | a8083063 | Iustin Pop |
|
1715 | a8083063 | Iustin Pop | This function is called recursively, and the snapshot is actually created
|
1716 | a8083063 | Iustin Pop | just for the leaf lvm backend device.
|
1717 | a8083063 | Iustin Pop |
|
1718 | e9e9263d | Guido Trotter | @type disk: L{objects.Disk}
|
1719 | e9e9263d | Guido Trotter | @param disk: the disk to be snapshotted
|
1720 | e9e9263d | Guido Trotter | @rtype: string
|
1721 | e9e9263d | Guido Trotter | @return: snapshot disk path
|
1722 | a8083063 | Iustin Pop |
|
1723 | 098c0958 | Michael Hanselmann | """
|
1724 | a8083063 | Iustin Pop | if disk.children:
|
1725 | a8083063 | Iustin Pop | if len(disk.children) == 1: |
1726 | a8083063 | Iustin Pop | # only one child, let's recurse on it
|
1727 | 821d1bd1 | Iustin Pop | return BlockdevSnapshot(disk.children[0]) |
1728 | a8083063 | Iustin Pop | else:
|
1729 | a8083063 | Iustin Pop | # more than one child, choose one that matches
|
1730 | a8083063 | Iustin Pop | for child in disk.children: |
1731 | a8083063 | Iustin Pop | if child.size == disk.size:
|
1732 | a8083063 | Iustin Pop | # return implies breaking the loop
|
1733 | 821d1bd1 | Iustin Pop | return BlockdevSnapshot(child)
|
1734 | fe96220b | Iustin Pop | elif disk.dev_type == constants.LD_LV:
|
1735 | a8083063 | Iustin Pop | r_dev = _RecursiveFindBD(disk) |
1736 | a8083063 | Iustin Pop | if r_dev is not None: |
1737 | a8083063 | Iustin Pop | # let's stay on the safe side and ask for the full size, for now
|
1738 | c26a6bd2 | Iustin Pop | return r_dev.Snapshot(disk.size)
|
1739 | a8083063 | Iustin Pop | else:
|
1740 | 87812fd3 | Iustin Pop | _Fail("Cannot find block device %s", disk)
|
1741 | a8083063 | Iustin Pop | else:
|
1742 | 87812fd3 | Iustin Pop | _Fail("Cannot snapshot non-lvm block device '%s' of type '%s'",
|
1743 | 87812fd3 | Iustin Pop | disk.unique_id, disk.dev_type) |
1744 | a8083063 | Iustin Pop | |
1745 | a8083063 | Iustin Pop | |
1746 | 74c47259 | Iustin Pop | def ExportSnapshot(disk, dest_node, instance, cluster_name, idx): |
1747 | a8083063 | Iustin Pop | """Export a block device snapshot to a remote node.
|
1748 | a8083063 | Iustin Pop |
|
1749 | 74c47259 | Iustin Pop | @type disk: L{objects.Disk}
|
1750 | 74c47259 | Iustin Pop | @param disk: the description of the disk to export
|
1751 | 74c47259 | Iustin Pop | @type dest_node: str
|
1752 | 74c47259 | Iustin Pop | @param dest_node: the destination node to export to
|
1753 | 74c47259 | Iustin Pop | @type instance: L{objects.Instance}
|
1754 | 74c47259 | Iustin Pop | @param instance: the instance object to whom the disk belongs
|
1755 | 74c47259 | Iustin Pop | @type cluster_name: str
|
1756 | 74c47259 | Iustin Pop | @param cluster_name: the cluster name, needed for SSH hostalias
|
1757 | 74c47259 | Iustin Pop | @type idx: int
|
1758 | 74c47259 | Iustin Pop | @param idx: the index of the disk in the instance's disk list,
|
1759 | 74c47259 | Iustin Pop | used to export to the OS scripts environment
|
1760 | c26a6bd2 | Iustin Pop | @rtype: None
|
1761 | a8083063 | Iustin Pop |
|
1762 | 098c0958 | Michael Hanselmann | """
|
1763 | 0607699d | Guido Trotter | export_env = OSEnvironment(instance) |
1764 | d324e3fc | Guido Trotter | |
1765 | a8083063 | Iustin Pop | inst_os = OSFromDisk(instance.os) |
1766 | a8083063 | Iustin Pop | export_script = inst_os.export_script |
1767 | a8083063 | Iustin Pop | |
1768 | a8083063 | Iustin Pop | logfile = "%s/exp-%s-%s-%s.log" % (constants.LOG_OS_DIR, inst_os.name,
|
1769 | a8083063 | Iustin Pop | instance.name, int(time.time()))
|
1770 | a8083063 | Iustin Pop | if not os.path.exists(constants.LOG_OS_DIR): |
1771 | a8083063 | Iustin Pop | os.mkdir(constants.LOG_OS_DIR, 0750)
|
1772 | 0607699d | Guido Trotter | real_disk = _RecursiveFindBD(disk) |
1773 | 0607699d | Guido Trotter | if real_disk is None: |
1774 | ba55d062 | Iustin Pop | _Fail("Block device '%s' is not set up", disk)
|
1775 | ba55d062 | Iustin Pop | |
1776 | 0607699d | Guido Trotter | real_disk.Open() |
1777 | 0607699d | Guido Trotter | |
1778 | 0607699d | Guido Trotter | export_env['EXPORT_DEVICE'] = real_disk.dev_path
|
1779 | 74c47259 | Iustin Pop | export_env['EXPORT_INDEX'] = str(idx) |
1780 | a8083063 | Iustin Pop | |
1781 | a8083063 | Iustin Pop | destdir = os.path.join(constants.EXPORT_DIR, instance.name + ".new")
|
1782 | a8083063 | Iustin Pop | destfile = disk.physical_id[1]
|
1783 | a8083063 | Iustin Pop | |
1784 | a8083063 | Iustin Pop | # the target command is built out of three individual commands,
|
1785 | a8083063 | Iustin Pop | # which are joined by pipes; we check each individual command for
|
1786 | a8083063 | Iustin Pop | # valid parameters
|
1787 | 0607699d | Guido Trotter | expcmd = utils.BuildShellCmd("cd %s; %s 2>%s", inst_os.path,
|
1788 | 0607699d | Guido Trotter | export_script, logfile) |
1789 | a8083063 | Iustin Pop | |
1790 | a8083063 | Iustin Pop | comprcmd = "gzip"
|
1791 | a8083063 | Iustin Pop | |
1792 | 72f0f7fd | Iustin Pop | destcmd = utils.BuildShellCmd("mkdir -p %s && cat > %s/%s",
|
1793 | 00003458 | Guido Trotter | destdir, destdir, destfile) |
1794 | 62c9ec92 | Iustin Pop | remotecmd = _GetSshRunner(cluster_name).BuildCmd(dest_node, |
1795 | 62c9ec92 | Iustin Pop | constants.GANETI_RUNAS, |
1796 | 62c9ec92 | Iustin Pop | destcmd) |
1797 | a8083063 | Iustin Pop | |
1798 | a8083063 | Iustin Pop | # all commands have been checked, so we're safe to combine them
|
1799 | 72f0f7fd | Iustin Pop | command = '|'.join([expcmd, comprcmd, utils.ShellQuoteArgs(remotecmd)])
|
1800 | a8083063 | Iustin Pop | |
1801 | 0607699d | Guido Trotter | result = utils.RunCmd(command, env=export_env) |
1802 | a8083063 | Iustin Pop | |
1803 | a8083063 | Iustin Pop | if result.failed:
|
1804 | ba55d062 | Iustin Pop | _Fail("OS snapshot export command '%s' returned error: %s"
|
1805 | ba55d062 | Iustin Pop | " output: %s", command, result.fail_reason, result.output)
|
1806 | a8083063 | Iustin Pop | |
1807 | a8083063 | Iustin Pop | |
1808 | a8083063 | Iustin Pop | def FinalizeExport(instance, snap_disks): |
1809 | a8083063 | Iustin Pop | """Write out the export configuration information.
|
1810 | a8083063 | Iustin Pop |
|
1811 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
1812 | 10c2650b | Iustin Pop | @param instance: the instance which we export, used for
|
1813 | 10c2650b | Iustin Pop | saving configuration
|
1814 | 10c2650b | Iustin Pop | @type snap_disks: list of L{objects.Disk}
|
1815 | 10c2650b | Iustin Pop | @param snap_disks: list of snapshot block devices, which
|
1816 | 10c2650b | Iustin Pop | will be used to get the actual name of the dump file
|
1817 | a8083063 | Iustin Pop |
|
1818 | c26a6bd2 | Iustin Pop | @rtype: None
|
1819 | a8083063 | Iustin Pop |
|
1820 | 098c0958 | Michael Hanselmann | """
|
1821 | a8083063 | Iustin Pop | destdir = os.path.join(constants.EXPORT_DIR, instance.name + ".new")
|
1822 | a8083063 | Iustin Pop | finaldestdir = os.path.join(constants.EXPORT_DIR, instance.name) |
1823 | a8083063 | Iustin Pop | |
1824 | a8083063 | Iustin Pop | config = objects.SerializableConfigParser() |
1825 | a8083063 | Iustin Pop | |
1826 | a8083063 | Iustin Pop | config.add_section(constants.INISECT_EXP) |
1827 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'version', '0') |
1828 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'timestamp', '%d' % int(time.time())) |
1829 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'source', instance.primary_node)
|
1830 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'os', instance.os)
|
1831 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'compression', 'gzip') |
1832 | a8083063 | Iustin Pop | |
1833 | a8083063 | Iustin Pop | config.add_section(constants.INISECT_INS) |
1834 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'name', instance.name)
|
1835 | 51de46bf | Iustin Pop | config.set(constants.INISECT_INS, 'memory', '%d' % |
1836 | 51de46bf | Iustin Pop | instance.beparams[constants.BE_MEMORY]) |
1837 | 51de46bf | Iustin Pop | config.set(constants.INISECT_INS, 'vcpus', '%d' % |
1838 | 51de46bf | Iustin Pop | instance.beparams[constants.BE_VCPUS]) |
1839 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'disk_template', instance.disk_template)
|
1840 | 66f93869 | Manuel Franceschini | |
1841 | 95268cc3 | Iustin Pop | nic_total = 0
|
1842 | a8083063 | Iustin Pop | for nic_count, nic in enumerate(instance.nics): |
1843 | 95268cc3 | Iustin Pop | nic_total += 1
|
1844 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'nic%d_mac' %
|
1845 | a8083063 | Iustin Pop | nic_count, '%s' % nic.mac)
|
1846 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'nic%d_ip' % nic_count, '%s' % nic.ip) |
1847 | 38206f3c | Iustin Pop | config.set(constants.INISECT_INS, 'nic%d_bridge' % nic_count,
|
1848 | 38206f3c | Iustin Pop | '%s' % nic.bridge)
|
1849 | a8083063 | Iustin Pop | # TODO: redundant: on load can read nics until it doesn't exist
|
1850 | 95268cc3 | Iustin Pop | config.set(constants.INISECT_INS, 'nic_count' , '%d' % nic_total) |
1851 | a8083063 | Iustin Pop | |
1852 | 726d7d68 | Iustin Pop | disk_total = 0
|
1853 | a8083063 | Iustin Pop | for disk_count, disk in enumerate(snap_disks): |
1854 | 19d7f90a | Guido Trotter | if disk:
|
1855 | 726d7d68 | Iustin Pop | disk_total += 1
|
1856 | 19d7f90a | Guido Trotter | config.set(constants.INISECT_INS, 'disk%d_ivname' % disk_count,
|
1857 | 19d7f90a | Guido Trotter | ('%s' % disk.iv_name))
|
1858 | 19d7f90a | Guido Trotter | config.set(constants.INISECT_INS, 'disk%d_dump' % disk_count,
|
1859 | 19d7f90a | Guido Trotter | ('%s' % disk.physical_id[1])) |
1860 | 19d7f90a | Guido Trotter | config.set(constants.INISECT_INS, 'disk%d_size' % disk_count,
|
1861 | 19d7f90a | Guido Trotter | ('%d' % disk.size))
|
1862 | a8083063 | Iustin Pop | |
1863 | 726d7d68 | Iustin Pop | config.set(constants.INISECT_INS, 'disk_count' , '%d' % disk_total) |
1864 | a8083063 | Iustin Pop | |
1865 | 726d7d68 | Iustin Pop | utils.WriteFile(os.path.join(destdir, constants.EXPORT_CONF_FILE), |
1866 | 726d7d68 | Iustin Pop | data=config.Dumps()) |
1867 | a8083063 | Iustin Pop | shutil.rmtree(finaldestdir, True)
|
1868 | a8083063 | Iustin Pop | shutil.move(destdir, finaldestdir) |
1869 | a8083063 | Iustin Pop | |
1870 | a8083063 | Iustin Pop | |
1871 | a8083063 | Iustin Pop | def ExportInfo(dest): |
1872 | a8083063 | Iustin Pop | """Get export configuration information.
|
1873 | a8083063 | Iustin Pop |
|
1874 | 10c2650b | Iustin Pop | @type dest: str
|
1875 | 10c2650b | Iustin Pop | @param dest: directory containing the export
|
1876 | a8083063 | Iustin Pop |
|
1877 | 10c2650b | Iustin Pop | @rtype: L{objects.SerializableConfigParser}
|
1878 | 10c2650b | Iustin Pop | @return: a serializable config file containing the
|
1879 | 10c2650b | Iustin Pop | export info
|
1880 | a8083063 | Iustin Pop |
|
1881 | a8083063 | Iustin Pop | """
|
1882 | a8083063 | Iustin Pop | cff = os.path.join(dest, constants.EXPORT_CONF_FILE) |
1883 | a8083063 | Iustin Pop | |
1884 | a8083063 | Iustin Pop | config = objects.SerializableConfigParser() |
1885 | a8083063 | Iustin Pop | config.read(cff) |
1886 | a8083063 | Iustin Pop | |
1887 | a8083063 | Iustin Pop | if (not config.has_section(constants.INISECT_EXP) or |
1888 | a8083063 | Iustin Pop | not config.has_section(constants.INISECT_INS)):
|
1889 | 3eccac06 | Iustin Pop | _Fail("Export info file doesn't have the required fields")
|
1890 | a8083063 | Iustin Pop | |
1891 | c26a6bd2 | Iustin Pop | return config.Dumps()
|
1892 | a8083063 | Iustin Pop | |
1893 | a8083063 | Iustin Pop | |
1894 | 6c0af70e | Guido Trotter | def ImportOSIntoInstance(instance, src_node, src_images, cluster_name): |
1895 | a8083063 | Iustin Pop | """Import an os image into an instance.
|
1896 | a8083063 | Iustin Pop |
|
1897 | b1206984 | Iustin Pop | @type instance: L{objects.Instance}
|
1898 | 6c0af70e | Guido Trotter | @param instance: instance to import the disks into
|
1899 | 6c0af70e | Guido Trotter | @type src_node: string
|
1900 | 6c0af70e | Guido Trotter | @param src_node: source node for the disk images
|
1901 | 6c0af70e | Guido Trotter | @type src_images: list of string
|
1902 | 6c0af70e | Guido Trotter | @param src_images: absolute paths of the disk images
|
1903 | 6c0af70e | Guido Trotter | @rtype: list of boolean
|
1904 | 6c0af70e | Guido Trotter | @return: each boolean represent the success of importing the n-th disk
|
1905 | a8083063 | Iustin Pop |
|
1906 | a8083063 | Iustin Pop | """
|
1907 | 6c0af70e | Guido Trotter | import_env = OSEnvironment(instance) |
1908 | a8083063 | Iustin Pop | inst_os = OSFromDisk(instance.os) |
1909 | a8083063 | Iustin Pop | import_script = inst_os.import_script |
1910 | a8083063 | Iustin Pop | |
1911 | a8083063 | Iustin Pop | logfile = "%s/import-%s-%s-%s.log" % (constants.LOG_OS_DIR, instance.os,
|
1912 | a8083063 | Iustin Pop | instance.name, int(time.time()))
|
1913 | a8083063 | Iustin Pop | if not os.path.exists(constants.LOG_OS_DIR): |
1914 | a8083063 | Iustin Pop | os.mkdir(constants.LOG_OS_DIR, 0750)
|
1915 | a8083063 | Iustin Pop | |
1916 | a8083063 | Iustin Pop | comprcmd = "gunzip"
|
1917 | d868edb4 | Iustin Pop | impcmd = utils.BuildShellCmd("(cd %s; %s >%s 2>&1)", inst_os.path,
|
1918 | d868edb4 | Iustin Pop | import_script, logfile) |
1919 | a8083063 | Iustin Pop | |
1920 | 6c0af70e | Guido Trotter | final_result = [] |
1921 | 6c0af70e | Guido Trotter | for idx, image in enumerate(src_images): |
1922 | 6c0af70e | Guido Trotter | if image:
|
1923 | 6c0af70e | Guido Trotter | destcmd = utils.BuildShellCmd('cat %s', image)
|
1924 | 6c0af70e | Guido Trotter | remotecmd = _GetSshRunner(cluster_name).BuildCmd(src_node, |
1925 | 6c0af70e | Guido Trotter | constants.GANETI_RUNAS, |
1926 | 6c0af70e | Guido Trotter | destcmd) |
1927 | 6c0af70e | Guido Trotter | command = '|'.join([utils.ShellQuoteArgs(remotecmd), comprcmd, impcmd])
|
1928 | 6c0af70e | Guido Trotter | import_env['IMPORT_DEVICE'] = import_env['DISK_%d_PATH' % idx] |
1929 | 74c47259 | Iustin Pop | import_env['IMPORT_INDEX'] = str(idx) |
1930 | 6c0af70e | Guido Trotter | result = utils.RunCmd(command, env=import_env) |
1931 | 6c0af70e | Guido Trotter | if result.failed:
|
1932 | 726d7d68 | Iustin Pop | logging.error("Disk import command '%s' returned error: %s"
|
1933 | 726d7d68 | Iustin Pop | " output: %s", command, result.fail_reason,
|
1934 | 726d7d68 | Iustin Pop | result.output) |
1935 | 944bf548 | Iustin Pop | final_result.append("error importing disk %d: %s, %s" %
|
1936 | 944bf548 | Iustin Pop | (idx, result.fail_reason, result.output[-100]))
|
1937 | a8083063 | Iustin Pop | |
1938 | 944bf548 | Iustin Pop | if final_result:
|
1939 | afdc3985 | Iustin Pop | _Fail("; ".join(final_result), log=False) |
1940 | a8083063 | Iustin Pop | |
1941 | a8083063 | Iustin Pop | |
1942 | a8083063 | Iustin Pop | def ListExports(): |
1943 | a8083063 | Iustin Pop | """Return a list of exports currently available on this machine.
|
1944 | 098c0958 | Michael Hanselmann |
|
1945 | 10c2650b | Iustin Pop | @rtype: list
|
1946 | 10c2650b | Iustin Pop | @return: list of the exports
|
1947 | 10c2650b | Iustin Pop |
|
1948 | a8083063 | Iustin Pop | """
|
1949 | a8083063 | Iustin Pop | if os.path.isdir(constants.EXPORT_DIR):
|
1950 | c26a6bd2 | Iustin Pop | return utils.ListVisibleFiles(constants.EXPORT_DIR)
|
1951 | a8083063 | Iustin Pop | else:
|
1952 | afdc3985 | Iustin Pop | _Fail("No exports directory")
|
1953 | a8083063 | Iustin Pop | |
1954 | a8083063 | Iustin Pop | |
1955 | a8083063 | Iustin Pop | def RemoveExport(export): |
1956 | a8083063 | Iustin Pop | """Remove an existing export from the node.
|
1957 | a8083063 | Iustin Pop |
|
1958 | 10c2650b | Iustin Pop | @type export: str
|
1959 | 10c2650b | Iustin Pop | @param export: the name of the export to remove
|
1960 | c26a6bd2 | Iustin Pop | @rtype: None
|
1961 | a8083063 | Iustin Pop |
|
1962 | 098c0958 | Michael Hanselmann | """
|
1963 | a8083063 | Iustin Pop | target = os.path.join(constants.EXPORT_DIR, export) |
1964 | a8083063 | Iustin Pop | |
1965 | 35fbcd11 | Iustin Pop | try:
|
1966 | 35fbcd11 | Iustin Pop | shutil.rmtree(target) |
1967 | 35fbcd11 | Iustin Pop | except EnvironmentError, err: |
1968 | 35fbcd11 | Iustin Pop | _Fail("Error while removing the export: %s", err, exc=True) |
1969 | a8083063 | Iustin Pop | |
1970 | a8083063 | Iustin Pop | |
1971 | 821d1bd1 | Iustin Pop | def BlockdevRename(devlist): |
1972 | f3e513ad | Iustin Pop | """Rename a list of block devices.
|
1973 | f3e513ad | Iustin Pop |
|
1974 | 10c2650b | Iustin Pop | @type devlist: list of tuples
|
1975 | 10c2650b | Iustin Pop | @param devlist: list of tuples of the form (disk,
|
1976 | 10c2650b | Iustin Pop | new_logical_id, new_physical_id); disk is an
|
1977 | 10c2650b | Iustin Pop | L{objects.Disk} object describing the current disk,
|
1978 | 10c2650b | Iustin Pop | and new logical_id/physical_id is the name we
|
1979 | 10c2650b | Iustin Pop | rename it to
|
1980 | 10c2650b | Iustin Pop | @rtype: boolean
|
1981 | 10c2650b | Iustin Pop | @return: True if all renames succeeded, False otherwise
|
1982 | f3e513ad | Iustin Pop |
|
1983 | f3e513ad | Iustin Pop | """
|
1984 | 6b5e3f70 | Iustin Pop | msgs = [] |
1985 | f3e513ad | Iustin Pop | result = True
|
1986 | f3e513ad | Iustin Pop | for disk, unique_id in devlist: |
1987 | f3e513ad | Iustin Pop | dev = _RecursiveFindBD(disk) |
1988 | f3e513ad | Iustin Pop | if dev is None: |
1989 | 6b5e3f70 | Iustin Pop | msgs.append("Can't find device %s in rename" % str(disk)) |
1990 | f3e513ad | Iustin Pop | result = False
|
1991 | f3e513ad | Iustin Pop | continue
|
1992 | f3e513ad | Iustin Pop | try:
|
1993 | 3f78eef2 | Iustin Pop | old_rpath = dev.dev_path |
1994 | f3e513ad | Iustin Pop | dev.Rename(unique_id) |
1995 | 3f78eef2 | Iustin Pop | new_rpath = dev.dev_path |
1996 | 3f78eef2 | Iustin Pop | if old_rpath != new_rpath:
|
1997 | 3f78eef2 | Iustin Pop | DevCacheManager.RemoveCache(old_rpath) |
1998 | 3f78eef2 | Iustin Pop | # FIXME: we should add the new cache information here, like:
|
1999 | 3f78eef2 | Iustin Pop | # DevCacheManager.UpdateCache(new_rpath, owner, ...)
|
2000 | 3f78eef2 | Iustin Pop | # but we don't have the owner here - maybe parse from existing
|
2001 | 3f78eef2 | Iustin Pop | # cache? for now, we only lose lvm data when we rename, which
|
2002 | 3f78eef2 | Iustin Pop | # is less critical than DRBD or MD
|
2003 | f3e513ad | Iustin Pop | except errors.BlockDeviceError, err:
|
2004 | 6b5e3f70 | Iustin Pop | msgs.append("Can't rename device '%s' to '%s': %s" %
|
2005 | 6b5e3f70 | Iustin Pop | (dev, unique_id, err)) |
2006 | 18682bca | Iustin Pop | logging.exception("Can't rename device '%s' to '%s'", dev, unique_id)
|
2007 | f3e513ad | Iustin Pop | result = False
|
2008 | afdc3985 | Iustin Pop | if not result: |
2009 | afdc3985 | Iustin Pop | _Fail("; ".join(msgs))
|
2010 | f3e513ad | Iustin Pop | |
2011 | f3e513ad | Iustin Pop | |
2012 | 778b75bb | Manuel Franceschini | def _TransformFileStorageDir(file_storage_dir): |
2013 | 778b75bb | Manuel Franceschini | """Checks whether given file_storage_dir is valid.
|
2014 | 778b75bb | Manuel Franceschini |
|
2015 | 778b75bb | Manuel Franceschini | Checks wheter the given file_storage_dir is within the cluster-wide
|
2016 | 778b75bb | Manuel Franceschini | default file_storage_dir stored in SimpleStore. Only paths under that
|
2017 | 778b75bb | Manuel Franceschini | directory are allowed.
|
2018 | 778b75bb | Manuel Franceschini |
|
2019 | b1206984 | Iustin Pop | @type file_storage_dir: str
|
2020 | b1206984 | Iustin Pop | @param file_storage_dir: the path to check
|
2021 | d61cbe76 | Iustin Pop |
|
2022 | b1206984 | Iustin Pop | @return: the normalized path if valid, None otherwise
|
2023 | 778b75bb | Manuel Franceschini |
|
2024 | 778b75bb | Manuel Franceschini | """
|
2025 | c657dcc9 | Michael Hanselmann | cfg = _GetConfig() |
2026 | 778b75bb | Manuel Franceschini | file_storage_dir = os.path.normpath(file_storage_dir) |
2027 | c657dcc9 | Michael Hanselmann | base_file_storage_dir = cfg.GetFileStorageDir() |
2028 | 778b75bb | Manuel Franceschini | if (not os.path.commonprefix([file_storage_dir, base_file_storage_dir]) == |
2029 | 778b75bb | Manuel Franceschini | base_file_storage_dir): |
2030 | b2b8bcce | Iustin Pop | _Fail("File storage directory '%s' is not under base file"
|
2031 | b2b8bcce | Iustin Pop | " storage directory '%s'", file_storage_dir, base_file_storage_dir)
|
2032 | 778b75bb | Manuel Franceschini | return file_storage_dir
|
2033 | 778b75bb | Manuel Franceschini | |
2034 | 778b75bb | Manuel Franceschini | |
2035 | 778b75bb | Manuel Franceschini | def CreateFileStorageDir(file_storage_dir): |
2036 | 778b75bb | Manuel Franceschini | """Create file storage directory.
|
2037 | 778b75bb | Manuel Franceschini |
|
2038 | b1206984 | Iustin Pop | @type file_storage_dir: str
|
2039 | b1206984 | Iustin Pop | @param file_storage_dir: directory to create
|
2040 | 778b75bb | Manuel Franceschini |
|
2041 | b1206984 | Iustin Pop | @rtype: tuple
|
2042 | b1206984 | Iustin Pop | @return: tuple with first element a boolean indicating wheter dir
|
2043 | b1206984 | Iustin Pop | creation was successful or not
|
2044 | 778b75bb | Manuel Franceschini |
|
2045 | 778b75bb | Manuel Franceschini | """
|
2046 | 778b75bb | Manuel Franceschini | file_storage_dir = _TransformFileStorageDir(file_storage_dir) |
2047 | b2b8bcce | Iustin Pop | if os.path.exists(file_storage_dir):
|
2048 | b2b8bcce | Iustin Pop | if not os.path.isdir(file_storage_dir): |
2049 | b2b8bcce | Iustin Pop | _Fail("Specified storage dir '%s' is not a directory",
|
2050 | b2b8bcce | Iustin Pop | file_storage_dir) |
2051 | 778b75bb | Manuel Franceschini | else:
|
2052 | b2b8bcce | Iustin Pop | try:
|
2053 | b2b8bcce | Iustin Pop | os.makedirs(file_storage_dir, 0750)
|
2054 | b2b8bcce | Iustin Pop | except OSError, err: |
2055 | b2b8bcce | Iustin Pop | _Fail("Cannot create file storage directory '%s': %s",
|
2056 | b2b8bcce | Iustin Pop | file_storage_dir, err, exc=True)
|
2057 | 778b75bb | Manuel Franceschini | |
2058 | 778b75bb | Manuel Franceschini | |
2059 | 778b75bb | Manuel Franceschini | def RemoveFileStorageDir(file_storage_dir): |
2060 | 778b75bb | Manuel Franceschini | """Remove file storage directory.
|
2061 | 778b75bb | Manuel Franceschini |
|
2062 | 778b75bb | Manuel Franceschini | Remove it only if it's empty. If not log an error and return.
|
2063 | 778b75bb | Manuel Franceschini |
|
2064 | 10c2650b | Iustin Pop | @type file_storage_dir: str
|
2065 | 10c2650b | Iustin Pop | @param file_storage_dir: the directory we should cleanup
|
2066 | 10c2650b | Iustin Pop | @rtype: tuple (success,)
|
2067 | 10c2650b | Iustin Pop | @return: tuple of one element, C{success}, denoting
|
2068 | 10c2650b | Iustin Pop | whether the operation was successfull
|
2069 | 778b75bb | Manuel Franceschini |
|
2070 | 778b75bb | Manuel Franceschini | """
|
2071 | 778b75bb | Manuel Franceschini | file_storage_dir = _TransformFileStorageDir(file_storage_dir) |
2072 | b2b8bcce | Iustin Pop | if os.path.exists(file_storage_dir):
|
2073 | b2b8bcce | Iustin Pop | if not os.path.isdir(file_storage_dir): |
2074 | b2b8bcce | Iustin Pop | _Fail("Specified Storage directory '%s' is not a directory",
|
2075 | b2b8bcce | Iustin Pop | file_storage_dir) |
2076 | afdc3985 | Iustin Pop | # deletes dir only if empty, otherwise we want to fail the rpc call
|
2077 | b2b8bcce | Iustin Pop | try:
|
2078 | b2b8bcce | Iustin Pop | os.rmdir(file_storage_dir) |
2079 | b2b8bcce | Iustin Pop | except OSError, err: |
2080 | b2b8bcce | Iustin Pop | _Fail("Cannot remove file storage directory '%s': %s",
|
2081 | b2b8bcce | Iustin Pop | file_storage_dir, err) |
2082 | b2b8bcce | Iustin Pop | |
2083 | 778b75bb | Manuel Franceschini | |
2084 | 778b75bb | Manuel Franceschini | def RenameFileStorageDir(old_file_storage_dir, new_file_storage_dir): |
2085 | 778b75bb | Manuel Franceschini | """Rename the file storage directory.
|
2086 | 778b75bb | Manuel Franceschini |
|
2087 | 10c2650b | Iustin Pop | @type old_file_storage_dir: str
|
2088 | 10c2650b | Iustin Pop | @param old_file_storage_dir: the current path
|
2089 | 10c2650b | Iustin Pop | @type new_file_storage_dir: str
|
2090 | 10c2650b | Iustin Pop | @param new_file_storage_dir: the name we should rename to
|
2091 | 10c2650b | Iustin Pop | @rtype: tuple (success,)
|
2092 | 10c2650b | Iustin Pop | @return: tuple of one element, C{success}, denoting
|
2093 | 10c2650b | Iustin Pop | whether the operation was successful
|
2094 | 778b75bb | Manuel Franceschini |
|
2095 | 778b75bb | Manuel Franceschini | """
|
2096 | 778b75bb | Manuel Franceschini | old_file_storage_dir = _TransformFileStorageDir(old_file_storage_dir) |
2097 | 778b75bb | Manuel Franceschini | new_file_storage_dir = _TransformFileStorageDir(new_file_storage_dir) |
2098 | b2b8bcce | Iustin Pop | if not os.path.exists(new_file_storage_dir): |
2099 | b2b8bcce | Iustin Pop | if os.path.isdir(old_file_storage_dir):
|
2100 | b2b8bcce | Iustin Pop | try:
|
2101 | b2b8bcce | Iustin Pop | os.rename(old_file_storage_dir, new_file_storage_dir) |
2102 | b2b8bcce | Iustin Pop | except OSError, err: |
2103 | b2b8bcce | Iustin Pop | _Fail("Cannot rename '%s' to '%s': %s",
|
2104 | b2b8bcce | Iustin Pop | old_file_storage_dir, new_file_storage_dir, err) |
2105 | 778b75bb | Manuel Franceschini | else:
|
2106 | b2b8bcce | Iustin Pop | _Fail("Specified storage dir '%s' is not a directory",
|
2107 | b2b8bcce | Iustin Pop | old_file_storage_dir) |
2108 | b2b8bcce | Iustin Pop | else:
|
2109 | b2b8bcce | Iustin Pop | if os.path.exists(old_file_storage_dir):
|
2110 | b2b8bcce | Iustin Pop | _Fail("Cannot rename '%s' to '%s': both locations exist",
|
2111 | b2b8bcce | Iustin Pop | old_file_storage_dir, new_file_storage_dir) |
2112 | 778b75bb | Manuel Franceschini | |
2113 | 778b75bb | Manuel Franceschini | |
2114 | c8457ce7 | Iustin Pop | def _EnsureJobQueueFile(file_name): |
2115 | dc31eae3 | Michael Hanselmann | """Checks whether the given filename is in the queue directory.
|
2116 | ca52cdeb | Michael Hanselmann |
|
2117 | 10c2650b | Iustin Pop | @type file_name: str
|
2118 | 10c2650b | Iustin Pop | @param file_name: the file name we should check
|
2119 | c8457ce7 | Iustin Pop | @rtype: None
|
2120 | c8457ce7 | Iustin Pop | @raises RPCFail: if the file is not valid
|
2121 | 10c2650b | Iustin Pop |
|
2122 | ca52cdeb | Michael Hanselmann | """
|
2123 | ca52cdeb | Michael Hanselmann | queue_dir = os.path.normpath(constants.QUEUE_DIR) |
2124 | dc31eae3 | Michael Hanselmann | result = (os.path.commonprefix([queue_dir, file_name]) == queue_dir) |
2125 | dc31eae3 | Michael Hanselmann | |
2126 | dc31eae3 | Michael Hanselmann | if not result: |
2127 | c8457ce7 | Iustin Pop | _Fail("Passed job queue file '%s' does not belong to"
|
2128 | c8457ce7 | Iustin Pop | " the queue directory '%s'", file_name, queue_dir)
|
2129 | dc31eae3 | Michael Hanselmann | |
2130 | dc31eae3 | Michael Hanselmann | |
2131 | dc31eae3 | Michael Hanselmann | def JobQueueUpdate(file_name, content): |
2132 | dc31eae3 | Michael Hanselmann | """Updates a file in the queue directory.
|
2133 | dc31eae3 | Michael Hanselmann |
|
2134 | 10c2650b | Iustin Pop | This is just a wrapper over L{utils.WriteFile}, with proper
|
2135 | 10c2650b | Iustin Pop | checking.
|
2136 | 10c2650b | Iustin Pop |
|
2137 | 10c2650b | Iustin Pop | @type file_name: str
|
2138 | 10c2650b | Iustin Pop | @param file_name: the job file name
|
2139 | 10c2650b | Iustin Pop | @type content: str
|
2140 | 10c2650b | Iustin Pop | @param content: the new job contents
|
2141 | 10c2650b | Iustin Pop | @rtype: boolean
|
2142 | 10c2650b | Iustin Pop | @return: the success of the operation
|
2143 | 10c2650b | Iustin Pop |
|
2144 | dc31eae3 | Michael Hanselmann | """
|
2145 | c8457ce7 | Iustin Pop | _EnsureJobQueueFile(file_name) |
2146 | ca52cdeb | Michael Hanselmann | |
2147 | ca52cdeb | Michael Hanselmann | # Write and replace the file atomically
|
2148 | 12bce260 | Michael Hanselmann | utils.WriteFile(file_name, data=_Decompress(content)) |
2149 | ca52cdeb | Michael Hanselmann | |
2150 | ca52cdeb | Michael Hanselmann | |
2151 | af5ebcb1 | Michael Hanselmann | def JobQueueRename(old, new): |
2152 | af5ebcb1 | Michael Hanselmann | """Renames a job queue file.
|
2153 | af5ebcb1 | Michael Hanselmann |
|
2154 | c41eea6e | Iustin Pop | This is just a wrapper over os.rename with proper checking.
|
2155 | 10c2650b | Iustin Pop |
|
2156 | 10c2650b | Iustin Pop | @type old: str
|
2157 | 10c2650b | Iustin Pop | @param old: the old (actual) file name
|
2158 | 10c2650b | Iustin Pop | @type new: str
|
2159 | 10c2650b | Iustin Pop | @param new: the desired file name
|
2160 | c8457ce7 | Iustin Pop | @rtype: tuple
|
2161 | c8457ce7 | Iustin Pop | @return: the success of the operation and payload
|
2162 | 10c2650b | Iustin Pop |
|
2163 | af5ebcb1 | Michael Hanselmann | """
|
2164 | c8457ce7 | Iustin Pop | _EnsureJobQueueFile(old) |
2165 | c8457ce7 | Iustin Pop | _EnsureJobQueueFile(new) |
2166 | af5ebcb1 | Michael Hanselmann | |
2167 | 58b22b6e | Michael Hanselmann | utils.RenameFile(old, new, mkdir=True)
|
2168 | af5ebcb1 | Michael Hanselmann | |
2169 | af5ebcb1 | Michael Hanselmann | |
2170 | 5d672980 | Iustin Pop | def JobQueueSetDrainFlag(drain_flag): |
2171 | 5d672980 | Iustin Pop | """Set the drain flag for the queue.
|
2172 | 5d672980 | Iustin Pop |
|
2173 | 5d672980 | Iustin Pop | This will set or unset the queue drain flag.
|
2174 | 5d672980 | Iustin Pop |
|
2175 | 10c2650b | Iustin Pop | @type drain_flag: boolean
|
2176 | 5d672980 | Iustin Pop | @param drain_flag: if True, will set the drain flag, otherwise reset it.
|
2177 | c8457ce7 | Iustin Pop | @rtype: truple
|
2178 | c8457ce7 | Iustin Pop | @return: always True, None
|
2179 | 10c2650b | Iustin Pop | @warning: the function always returns True
|
2180 | 5d672980 | Iustin Pop |
|
2181 | 5d672980 | Iustin Pop | """
|
2182 | 5d672980 | Iustin Pop | if drain_flag:
|
2183 | 5d672980 | Iustin Pop | utils.WriteFile(constants.JOB_QUEUE_DRAIN_FILE, data="", close=True) |
2184 | 5d672980 | Iustin Pop | else:
|
2185 | 5d672980 | Iustin Pop | utils.RemoveFile(constants.JOB_QUEUE_DRAIN_FILE) |
2186 | 5d672980 | Iustin Pop | |
2187 | 5d672980 | Iustin Pop | |
2188 | 821d1bd1 | Iustin Pop | def BlockdevClose(instance_name, disks): |
2189 | d61cbe76 | Iustin Pop | """Closes the given block devices.
|
2190 | d61cbe76 | Iustin Pop |
|
2191 | 10c2650b | Iustin Pop | This means they will be switched to secondary mode (in case of
|
2192 | 10c2650b | Iustin Pop | DRBD).
|
2193 | 10c2650b | Iustin Pop |
|
2194 | b2e7666a | Iustin Pop | @param instance_name: if the argument is not empty, the symlinks
|
2195 | b2e7666a | Iustin Pop | of this instance will be removed
|
2196 | 10c2650b | Iustin Pop | @type disks: list of L{objects.Disk}
|
2197 | 10c2650b | Iustin Pop | @param disks: the list of disks to be closed
|
2198 | 10c2650b | Iustin Pop | @rtype: tuple (success, message)
|
2199 | 10c2650b | Iustin Pop | @return: a tuple of success and message, where success
|
2200 | 10c2650b | Iustin Pop | indicates the succes of the operation, and message
|
2201 | 10c2650b | Iustin Pop | which will contain the error details in case we
|
2202 | 10c2650b | Iustin Pop | failed
|
2203 | d61cbe76 | Iustin Pop |
|
2204 | d61cbe76 | Iustin Pop | """
|
2205 | d61cbe76 | Iustin Pop | bdevs = [] |
2206 | d61cbe76 | Iustin Pop | for cf in disks: |
2207 | d61cbe76 | Iustin Pop | rd = _RecursiveFindBD(cf) |
2208 | d61cbe76 | Iustin Pop | if rd is None: |
2209 | 2cc6781a | Iustin Pop | _Fail("Can't find device %s", cf)
|
2210 | d61cbe76 | Iustin Pop | bdevs.append(rd) |
2211 | d61cbe76 | Iustin Pop | |
2212 | d61cbe76 | Iustin Pop | msg = [] |
2213 | d61cbe76 | Iustin Pop | for rd in bdevs: |
2214 | d61cbe76 | Iustin Pop | try:
|
2215 | d61cbe76 | Iustin Pop | rd.Close() |
2216 | d61cbe76 | Iustin Pop | except errors.BlockDeviceError, err:
|
2217 | d61cbe76 | Iustin Pop | msg.append(str(err))
|
2218 | d61cbe76 | Iustin Pop | if msg:
|
2219 | afdc3985 | Iustin Pop | _Fail("Can't make devices secondary: %s", ",".join(msg)) |
2220 | d61cbe76 | Iustin Pop | else:
|
2221 | b2e7666a | Iustin Pop | if instance_name:
|
2222 | 5282084b | Iustin Pop | _RemoveBlockDevLinks(instance_name, disks) |
2223 | d61cbe76 | Iustin Pop | |
2224 | d61cbe76 | Iustin Pop | |
2225 | 6217e295 | Iustin Pop | def ValidateHVParams(hvname, hvparams): |
2226 | 6217e295 | Iustin Pop | """Validates the given hypervisor parameters.
|
2227 | 6217e295 | Iustin Pop |
|
2228 | 6217e295 | Iustin Pop | @type hvname: string
|
2229 | 6217e295 | Iustin Pop | @param hvname: the hypervisor name
|
2230 | 6217e295 | Iustin Pop | @type hvparams: dict
|
2231 | 6217e295 | Iustin Pop | @param hvparams: the hypervisor parameters to be validated
|
2232 | c26a6bd2 | Iustin Pop | @rtype: None
|
2233 | 6217e295 | Iustin Pop |
|
2234 | 6217e295 | Iustin Pop | """
|
2235 | 6217e295 | Iustin Pop | try:
|
2236 | 6217e295 | Iustin Pop | hv_type = hypervisor.GetHypervisor(hvname) |
2237 | 6217e295 | Iustin Pop | hv_type.ValidateParameters(hvparams) |
2238 | 6217e295 | Iustin Pop | except errors.HypervisorError, err:
|
2239 | afdc3985 | Iustin Pop | _Fail(str(err), log=False) |
2240 | 6217e295 | Iustin Pop | |
2241 | 6217e295 | Iustin Pop | |
2242 | 56aa9fd5 | Iustin Pop | def DemoteFromMC(): |
2243 | 56aa9fd5 | Iustin Pop | """Demotes the current node from master candidate role.
|
2244 | 56aa9fd5 | Iustin Pop |
|
2245 | 56aa9fd5 | Iustin Pop | """
|
2246 | 56aa9fd5 | Iustin Pop | # try to ensure we're not the master by mistake
|
2247 | 56aa9fd5 | Iustin Pop | master, myself = ssconf.GetMasterAndMyself() |
2248 | 56aa9fd5 | Iustin Pop | if master == myself:
|
2249 | afdc3985 | Iustin Pop | _Fail("ssconf status shows I'm the master node, will not demote")
|
2250 | 56aa9fd5 | Iustin Pop | pid_file = utils.DaemonPidFileName(constants.MASTERD_PID) |
2251 | 56aa9fd5 | Iustin Pop | if utils.IsProcessAlive(utils.ReadPidFile(pid_file)):
|
2252 | afdc3985 | Iustin Pop | _Fail("The master daemon is running, will not demote")
|
2253 | 56aa9fd5 | Iustin Pop | try:
|
2254 | 56aa9fd5 | Iustin Pop | utils.CreateBackup(constants.CLUSTER_CONF_FILE) |
2255 | 56aa9fd5 | Iustin Pop | except EnvironmentError, err: |
2256 | 56aa9fd5 | Iustin Pop | if err.errno != errno.ENOENT:
|
2257 | afdc3985 | Iustin Pop | _Fail("Error while backing up cluster file: %s", err, exc=True) |
2258 | 56aa9fd5 | Iustin Pop | utils.RemoveFile(constants.CLUSTER_CONF_FILE) |
2259 | 56aa9fd5 | Iustin Pop | |
2260 | 56aa9fd5 | Iustin Pop | |
2261 | 6b93ec9d | Iustin Pop | def _FindDisks(nodes_ip, disks): |
2262 | 6b93ec9d | Iustin Pop | """Sets the physical ID on disks and returns the block devices.
|
2263 | 6b93ec9d | Iustin Pop |
|
2264 | 6b93ec9d | Iustin Pop | """
|
2265 | 6b93ec9d | Iustin Pop | # set the correct physical ID
|
2266 | 6b93ec9d | Iustin Pop | my_name = utils.HostInfo().name |
2267 | 6b93ec9d | Iustin Pop | for cf in disks: |
2268 | 6b93ec9d | Iustin Pop | cf.SetPhysicalID(my_name, nodes_ip) |
2269 | 6b93ec9d | Iustin Pop | |
2270 | 6b93ec9d | Iustin Pop | bdevs = [] |
2271 | 6b93ec9d | Iustin Pop | |
2272 | 6b93ec9d | Iustin Pop | for cf in disks: |
2273 | 6b93ec9d | Iustin Pop | rd = _RecursiveFindBD(cf) |
2274 | 6b93ec9d | Iustin Pop | if rd is None: |
2275 | 5a533f8a | Iustin Pop | _Fail("Can't find device %s", cf)
|
2276 | 6b93ec9d | Iustin Pop | bdevs.append(rd) |
2277 | 5a533f8a | Iustin Pop | return bdevs
|
2278 | 6b93ec9d | Iustin Pop | |
2279 | 6b93ec9d | Iustin Pop | |
2280 | 6b93ec9d | Iustin Pop | def DrbdDisconnectNet(nodes_ip, disks): |
2281 | 6b93ec9d | Iustin Pop | """Disconnects the network on a list of drbd devices.
|
2282 | 6b93ec9d | Iustin Pop |
|
2283 | 6b93ec9d | Iustin Pop | """
|
2284 | 5a533f8a | Iustin Pop | bdevs = _FindDisks(nodes_ip, disks) |
2285 | 6b93ec9d | Iustin Pop | |
2286 | 6b93ec9d | Iustin Pop | # disconnect disks
|
2287 | 6b93ec9d | Iustin Pop | for rd in bdevs: |
2288 | 6b93ec9d | Iustin Pop | try:
|
2289 | 6b93ec9d | Iustin Pop | rd.DisconnectNet() |
2290 | 6b93ec9d | Iustin Pop | except errors.BlockDeviceError, err:
|
2291 | 2cc6781a | Iustin Pop | _Fail("Can't change network configuration to standalone mode: %s",
|
2292 | 2cc6781a | Iustin Pop | err, exc=True)
|
2293 | 6b93ec9d | Iustin Pop | |
2294 | 6b93ec9d | Iustin Pop | |
2295 | 6b93ec9d | Iustin Pop | def DrbdAttachNet(nodes_ip, disks, instance_name, multimaster): |
2296 | 6b93ec9d | Iustin Pop | """Attaches the network on a list of drbd devices.
|
2297 | 6b93ec9d | Iustin Pop |
|
2298 | 6b93ec9d | Iustin Pop | """
|
2299 | 5a533f8a | Iustin Pop | bdevs = _FindDisks(nodes_ip, disks) |
2300 | 6b93ec9d | Iustin Pop | |
2301 | 6b93ec9d | Iustin Pop | if multimaster:
|
2302 | 53c776b5 | Iustin Pop | for idx, rd in enumerate(bdevs): |
2303 | 6b93ec9d | Iustin Pop | try:
|
2304 | 53c776b5 | Iustin Pop | _SymlinkBlockDev(instance_name, rd.dev_path, idx) |
2305 | 6b93ec9d | Iustin Pop | except EnvironmentError, err: |
2306 | 2cc6781a | Iustin Pop | _Fail("Can't create symlink: %s", err)
|
2307 | 6b93ec9d | Iustin Pop | # reconnect disks, switch to new master configuration and if
|
2308 | 6b93ec9d | Iustin Pop | # needed primary mode
|
2309 | 6b93ec9d | Iustin Pop | for rd in bdevs: |
2310 | 6b93ec9d | Iustin Pop | try:
|
2311 | 6b93ec9d | Iustin Pop | rd.AttachNet(multimaster) |
2312 | 6b93ec9d | Iustin Pop | except errors.BlockDeviceError, err:
|
2313 | 2cc6781a | Iustin Pop | _Fail("Can't change network configuration: %s", err)
|
2314 | 6b93ec9d | Iustin Pop | # wait until the disks are connected; we need to retry the re-attach
|
2315 | 6b93ec9d | Iustin Pop | # if the device becomes standalone, as this might happen if the one
|
2316 | 6b93ec9d | Iustin Pop | # node disconnects and reconnects in a different mode before the
|
2317 | 6b93ec9d | Iustin Pop | # other node reconnects; in this case, one or both of the nodes will
|
2318 | 6b93ec9d | Iustin Pop | # decide it has wrong configuration and switch to standalone
|
2319 | 6b93ec9d | Iustin Pop | RECONNECT_TIMEOUT = 2 * 60 |
2320 | 6b93ec9d | Iustin Pop | sleep_time = 0.100 # start with 100 miliseconds |
2321 | 6b93ec9d | Iustin Pop | timeout_limit = time.time() + RECONNECT_TIMEOUT |
2322 | 6b93ec9d | Iustin Pop | while time.time() < timeout_limit:
|
2323 | 6b93ec9d | Iustin Pop | all_connected = True
|
2324 | 6b93ec9d | Iustin Pop | for rd in bdevs: |
2325 | 6b93ec9d | Iustin Pop | stats = rd.GetProcStatus() |
2326 | 6b93ec9d | Iustin Pop | if not (stats.is_connected or stats.is_in_resync): |
2327 | 6b93ec9d | Iustin Pop | all_connected = False
|
2328 | 6b93ec9d | Iustin Pop | if stats.is_standalone:
|
2329 | 6b93ec9d | Iustin Pop | # peer had different config info and this node became
|
2330 | 6b93ec9d | Iustin Pop | # standalone, even though this should not happen with the
|
2331 | 6b93ec9d | Iustin Pop | # new staged way of changing disk configs
|
2332 | 6b93ec9d | Iustin Pop | try:
|
2333 | c738375b | Iustin Pop | rd.AttachNet(multimaster) |
2334 | 6b93ec9d | Iustin Pop | except errors.BlockDeviceError, err:
|
2335 | 2cc6781a | Iustin Pop | _Fail("Can't change network configuration: %s", err)
|
2336 | 6b93ec9d | Iustin Pop | if all_connected:
|
2337 | 6b93ec9d | Iustin Pop | break
|
2338 | 6b93ec9d | Iustin Pop | time.sleep(sleep_time) |
2339 | 6b93ec9d | Iustin Pop | sleep_time = min(5, sleep_time * 1.5) |
2340 | 6b93ec9d | Iustin Pop | if not all_connected: |
2341 | afdc3985 | Iustin Pop | _Fail("Timeout in disk reconnecting")
|
2342 | 6b93ec9d | Iustin Pop | if multimaster:
|
2343 | 6b93ec9d | Iustin Pop | # change to primary mode
|
2344 | 6b93ec9d | Iustin Pop | for rd in bdevs: |
2345 | d3da87b8 | Iustin Pop | try:
|
2346 | d3da87b8 | Iustin Pop | rd.Open() |
2347 | d3da87b8 | Iustin Pop | except errors.BlockDeviceError, err:
|
2348 | 2cc6781a | Iustin Pop | _Fail("Can't change to primary mode: %s", err)
|
2349 | 6b93ec9d | Iustin Pop | |
2350 | 6b93ec9d | Iustin Pop | |
2351 | 6b93ec9d | Iustin Pop | def DrbdWaitSync(nodes_ip, disks): |
2352 | 6b93ec9d | Iustin Pop | """Wait until DRBDs have synchronized.
|
2353 | 6b93ec9d | Iustin Pop |
|
2354 | 6b93ec9d | Iustin Pop | """
|
2355 | 5a533f8a | Iustin Pop | bdevs = _FindDisks(nodes_ip, disks) |
2356 | 6b93ec9d | Iustin Pop | |
2357 | 6b93ec9d | Iustin Pop | min_resync = 100
|
2358 | 6b93ec9d | Iustin Pop | alldone = True
|
2359 | 6b93ec9d | Iustin Pop | for rd in bdevs: |
2360 | 6b93ec9d | Iustin Pop | stats = rd.GetProcStatus() |
2361 | 6b93ec9d | Iustin Pop | if not (stats.is_connected or stats.is_in_resync): |
2362 | afdc3985 | Iustin Pop | _Fail("DRBD device %s is not in sync: stats=%s", rd, stats)
|
2363 | 6b93ec9d | Iustin Pop | alldone = alldone and (not stats.is_in_resync) |
2364 | 6b93ec9d | Iustin Pop | if stats.sync_percent is not None: |
2365 | 6b93ec9d | Iustin Pop | min_resync = min(min_resync, stats.sync_percent)
|
2366 | afdc3985 | Iustin Pop | |
2367 | c26a6bd2 | Iustin Pop | return (alldone, min_resync)
|
2368 | 6b93ec9d | Iustin Pop | |
2369 | 6b93ec9d | Iustin Pop | |
2370 | f5118ade | Iustin Pop | def PowercycleNode(hypervisor_type): |
2371 | f5118ade | Iustin Pop | """Hard-powercycle the node.
|
2372 | f5118ade | Iustin Pop |
|
2373 | f5118ade | Iustin Pop | Because we need to return first, and schedule the powercycle in the
|
2374 | f5118ade | Iustin Pop | background, we won't be able to report failures nicely.
|
2375 | f5118ade | Iustin Pop |
|
2376 | f5118ade | Iustin Pop | """
|
2377 | f5118ade | Iustin Pop | hyper = hypervisor.GetHypervisor(hypervisor_type) |
2378 | f5118ade | Iustin Pop | try:
|
2379 | f5118ade | Iustin Pop | pid = os.fork() |
2380 | 29921401 | Iustin Pop | except OSError: |
2381 | f5118ade | Iustin Pop | # if we can't fork, we'll pretend that we're in the child process
|
2382 | f5118ade | Iustin Pop | pid = 0
|
2383 | f5118ade | Iustin Pop | if pid > 0: |
2384 | c26a6bd2 | Iustin Pop | return "Reboot scheduled in 5 seconds" |
2385 | f5118ade | Iustin Pop | time.sleep(5)
|
2386 | f5118ade | Iustin Pop | hyper.PowercycleNode() |
2387 | f5118ade | Iustin Pop | |
2388 | f5118ade | Iustin Pop | |
2389 | a8083063 | Iustin Pop | class HooksRunner(object): |
2390 | a8083063 | Iustin Pop | """Hook runner.
|
2391 | a8083063 | Iustin Pop |
|
2392 | 10c2650b | Iustin Pop | This class is instantiated on the node side (ganeti-noded) and not
|
2393 | 10c2650b | Iustin Pop | on the master side.
|
2394 | a8083063 | Iustin Pop |
|
2395 | a8083063 | Iustin Pop | """
|
2396 | a8083063 | Iustin Pop | RE_MASK = re.compile("^[a-zA-Z0-9_-]+$")
|
2397 | a8083063 | Iustin Pop | |
2398 | a8083063 | Iustin Pop | def __init__(self, hooks_base_dir=None): |
2399 | a8083063 | Iustin Pop | """Constructor for hooks runner.
|
2400 | a8083063 | Iustin Pop |
|
2401 | 10c2650b | Iustin Pop | @type hooks_base_dir: str or None
|
2402 | 10c2650b | Iustin Pop | @param hooks_base_dir: if not None, this overrides the
|
2403 | 10c2650b | Iustin Pop | L{constants.HOOKS_BASE_DIR} (useful for unittests)
|
2404 | a8083063 | Iustin Pop |
|
2405 | a8083063 | Iustin Pop | """
|
2406 | a8083063 | Iustin Pop | if hooks_base_dir is None: |
2407 | a8083063 | Iustin Pop | hooks_base_dir = constants.HOOKS_BASE_DIR |
2408 | a8083063 | Iustin Pop | self._BASE_DIR = hooks_base_dir
|
2409 | a8083063 | Iustin Pop | |
2410 | a8083063 | Iustin Pop | @staticmethod
|
2411 | a8083063 | Iustin Pop | def ExecHook(script, env): |
2412 | a8083063 | Iustin Pop | """Exec one hook script.
|
2413 | a8083063 | Iustin Pop |
|
2414 | 10c2650b | Iustin Pop | @type script: str
|
2415 | 10c2650b | Iustin Pop | @param script: the full path to the script
|
2416 | 10c2650b | Iustin Pop | @type env: dict
|
2417 | 10c2650b | Iustin Pop | @param env: the environment with which to exec the script
|
2418 | 10c2650b | Iustin Pop | @rtype: tuple (success, message)
|
2419 | 10c2650b | Iustin Pop | @return: a tuple of success and message, where success
|
2420 | 10c2650b | Iustin Pop | indicates the succes of the operation, and message
|
2421 | 10c2650b | Iustin Pop | which will contain the error details in case we
|
2422 | 10c2650b | Iustin Pop | failed
|
2423 | a8083063 | Iustin Pop |
|
2424 | a8083063 | Iustin Pop | """
|
2425 | a8083063 | Iustin Pop | # exec the process using subprocess and log the output
|
2426 | a8083063 | Iustin Pop | fdstdin = None
|
2427 | a8083063 | Iustin Pop | try:
|
2428 | a8083063 | Iustin Pop | fdstdin = open("/dev/null", "r") |
2429 | a8083063 | Iustin Pop | child = subprocess.Popen([script], stdin=fdstdin, stdout=subprocess.PIPE, |
2430 | a8083063 | Iustin Pop | stderr=subprocess.STDOUT, close_fds=True,
|
2431 | 147af04d | Iustin Pop | shell=False, cwd="/", env=env) |
2432 | a8083063 | Iustin Pop | output = ""
|
2433 | a8083063 | Iustin Pop | try:
|
2434 | a8083063 | Iustin Pop | output = child.stdout.read(4096)
|
2435 | a8083063 | Iustin Pop | child.stdout.close() |
2436 | a8083063 | Iustin Pop | except EnvironmentError, err: |
2437 | a8083063 | Iustin Pop | output += "Hook script error: %s" % str(err) |
2438 | a8083063 | Iustin Pop | |
2439 | a8083063 | Iustin Pop | while True: |
2440 | a8083063 | Iustin Pop | try:
|
2441 | a8083063 | Iustin Pop | result = child.wait() |
2442 | a8083063 | Iustin Pop | break
|
2443 | a8083063 | Iustin Pop | except EnvironmentError, err: |
2444 | a8083063 | Iustin Pop | if err.errno == errno.EINTR:
|
2445 | a8083063 | Iustin Pop | continue
|
2446 | a8083063 | Iustin Pop | raise
|
2447 | a8083063 | Iustin Pop | finally:
|
2448 | a8083063 | Iustin Pop | # try not to leak fds
|
2449 | a8083063 | Iustin Pop | for fd in (fdstdin, ): |
2450 | a8083063 | Iustin Pop | if fd is not None: |
2451 | a8083063 | Iustin Pop | try:
|
2452 | a8083063 | Iustin Pop | fd.close() |
2453 | a8083063 | Iustin Pop | except EnvironmentError, err: |
2454 | a8083063 | Iustin Pop | # just log the error
|
2455 | 18682bca | Iustin Pop | #logging.exception("Error while closing fd %s", fd)
|
2456 | a8083063 | Iustin Pop | pass
|
2457 | a8083063 | Iustin Pop | |
2458 | 26f15862 | Iustin Pop | return result == 0, utils.SafeEncode(output.strip()) |
2459 | a8083063 | Iustin Pop | |
2460 | a8083063 | Iustin Pop | def RunHooks(self, hpath, phase, env): |
2461 | a8083063 | Iustin Pop | """Run the scripts in the hooks directory.
|
2462 | a8083063 | Iustin Pop |
|
2463 | 10c2650b | Iustin Pop | @type hpath: str
|
2464 | 10c2650b | Iustin Pop | @param hpath: the path to the hooks directory which
|
2465 | 10c2650b | Iustin Pop | holds the scripts
|
2466 | 10c2650b | Iustin Pop | @type phase: str
|
2467 | 10c2650b | Iustin Pop | @param phase: either L{constants.HOOKS_PHASE_PRE} or
|
2468 | 10c2650b | Iustin Pop | L{constants.HOOKS_PHASE_POST}
|
2469 | 10c2650b | Iustin Pop | @type env: dict
|
2470 | 10c2650b | Iustin Pop | @param env: dictionary with the environment for the hook
|
2471 | 10c2650b | Iustin Pop | @rtype: list
|
2472 | 10c2650b | Iustin Pop | @return: list of 3-element tuples:
|
2473 | 10c2650b | Iustin Pop | - script path
|
2474 | 10c2650b | Iustin Pop | - script result, either L{constants.HKR_SUCCESS} or
|
2475 | 10c2650b | Iustin Pop | L{constants.HKR_FAIL}
|
2476 | 10c2650b | Iustin Pop | - output of the script
|
2477 | 10c2650b | Iustin Pop |
|
2478 | 10c2650b | Iustin Pop | @raise errors.ProgrammerError: for invalid input
|
2479 | 10c2650b | Iustin Pop | parameters
|
2480 | a8083063 | Iustin Pop |
|
2481 | a8083063 | Iustin Pop | """
|
2482 | a8083063 | Iustin Pop | if phase == constants.HOOKS_PHASE_PRE:
|
2483 | a8083063 | Iustin Pop | suffix = "pre"
|
2484 | a8083063 | Iustin Pop | elif phase == constants.HOOKS_PHASE_POST:
|
2485 | a8083063 | Iustin Pop | suffix = "post"
|
2486 | a8083063 | Iustin Pop | else:
|
2487 | 3fb4f740 | Iustin Pop | _Fail("Unknown hooks phase '%s'", phase)
|
2488 | 3fb4f740 | Iustin Pop | |
2489 | a8083063 | Iustin Pop | rr = [] |
2490 | a8083063 | Iustin Pop | |
2491 | a8083063 | Iustin Pop | subdir = "%s-%s.d" % (hpath, suffix)
|
2492 | a8083063 | Iustin Pop | dir_name = "%s/%s" % (self._BASE_DIR, subdir) |
2493 | a8083063 | Iustin Pop | try:
|
2494 | eedbda4b | Michael Hanselmann | dir_contents = utils.ListVisibleFiles(dir_name) |
2495 | 29921401 | Iustin Pop | except OSError: |
2496 | 10c2650b | Iustin Pop | # FIXME: must log output in case of failures
|
2497 | c26a6bd2 | Iustin Pop | return rr
|
2498 | a8083063 | Iustin Pop | |
2499 | a8083063 | Iustin Pop | # we use the standard python sort order,
|
2500 | a8083063 | Iustin Pop | # so 00name is the recommended naming scheme
|
2501 | a8083063 | Iustin Pop | dir_contents.sort() |
2502 | a8083063 | Iustin Pop | for relname in dir_contents: |
2503 | a8083063 | Iustin Pop | fname = os.path.join(dir_name, relname) |
2504 | a8083063 | Iustin Pop | if not (os.path.isfile(fname) and os.access(fname, os.X_OK) and |
2505 | a8083063 | Iustin Pop | self.RE_MASK.match(relname) is not None): |
2506 | a8083063 | Iustin Pop | rrval = constants.HKR_SKIP |
2507 | a8083063 | Iustin Pop | output = ""
|
2508 | a8083063 | Iustin Pop | else:
|
2509 | a8083063 | Iustin Pop | result, output = self.ExecHook(fname, env)
|
2510 | a8083063 | Iustin Pop | if not result: |
2511 | a8083063 | Iustin Pop | rrval = constants.HKR_FAIL |
2512 | a8083063 | Iustin Pop | else:
|
2513 | a8083063 | Iustin Pop | rrval = constants.HKR_SUCCESS |
2514 | a8083063 | Iustin Pop | rr.append(("%s/%s" % (subdir, relname), rrval, output))
|
2515 | a8083063 | Iustin Pop | |
2516 | c26a6bd2 | Iustin Pop | return rr
|
2517 | 3f78eef2 | Iustin Pop | |
2518 | 3f78eef2 | Iustin Pop | |
2519 | 8d528b7c | Iustin Pop | class IAllocatorRunner(object): |
2520 | 8d528b7c | Iustin Pop | """IAllocator runner.
|
2521 | 8d528b7c | Iustin Pop |
|
2522 | 8d528b7c | Iustin Pop | This class is instantiated on the node side (ganeti-noded) and not on
|
2523 | 8d528b7c | Iustin Pop | the master side.
|
2524 | 8d528b7c | Iustin Pop |
|
2525 | 8d528b7c | Iustin Pop | """
|
2526 | 8d528b7c | Iustin Pop | def Run(self, name, idata): |
2527 | 8d528b7c | Iustin Pop | """Run an iallocator script.
|
2528 | 8d528b7c | Iustin Pop |
|
2529 | 10c2650b | Iustin Pop | @type name: str
|
2530 | 10c2650b | Iustin Pop | @param name: the iallocator script name
|
2531 | 10c2650b | Iustin Pop | @type idata: str
|
2532 | 10c2650b | Iustin Pop | @param idata: the allocator input data
|
2533 | 10c2650b | Iustin Pop |
|
2534 | 10c2650b | Iustin Pop | @rtype: tuple
|
2535 | 87f5c298 | Iustin Pop | @return: two element tuple of:
|
2536 | 87f5c298 | Iustin Pop | - status
|
2537 | 87f5c298 | Iustin Pop | - either error message or stdout of allocator (for success)
|
2538 | 8d528b7c | Iustin Pop |
|
2539 | 8d528b7c | Iustin Pop | """
|
2540 | 8d528b7c | Iustin Pop | alloc_script = utils.FindFile(name, constants.IALLOCATOR_SEARCH_PATH, |
2541 | 8d528b7c | Iustin Pop | os.path.isfile) |
2542 | 8d528b7c | Iustin Pop | if alloc_script is None: |
2543 | 87f5c298 | Iustin Pop | _Fail("iallocator module '%s' not found in the search path", name)
|
2544 | 8d528b7c | Iustin Pop | |
2545 | 8d528b7c | Iustin Pop | fd, fin_name = tempfile.mkstemp(prefix="ganeti-iallocator.")
|
2546 | 8d528b7c | Iustin Pop | try:
|
2547 | 8d528b7c | Iustin Pop | os.write(fd, idata) |
2548 | 8d528b7c | Iustin Pop | os.close(fd) |
2549 | 8d528b7c | Iustin Pop | result = utils.RunCmd([alloc_script, fin_name]) |
2550 | 8d528b7c | Iustin Pop | if result.failed:
|
2551 | 87f5c298 | Iustin Pop | _Fail("iallocator module '%s' failed: %s, output '%s'",
|
2552 | 87f5c298 | Iustin Pop | name, result.fail_reason, result.output) |
2553 | 8d528b7c | Iustin Pop | finally:
|
2554 | 8d528b7c | Iustin Pop | os.unlink(fin_name) |
2555 | 8d528b7c | Iustin Pop | |
2556 | c26a6bd2 | Iustin Pop | return result.stdout
|
2557 | 8d528b7c | Iustin Pop | |
2558 | 8d528b7c | Iustin Pop | |
2559 | 3f78eef2 | Iustin Pop | class DevCacheManager(object): |
2560 | c99a3cc0 | Manuel Franceschini | """Simple class for managing a cache of block device information.
|
2561 | 3f78eef2 | Iustin Pop |
|
2562 | 3f78eef2 | Iustin Pop | """
|
2563 | 3f78eef2 | Iustin Pop | _DEV_PREFIX = "/dev/"
|
2564 | 3f78eef2 | Iustin Pop | _ROOT_DIR = constants.BDEV_CACHE_DIR |
2565 | 3f78eef2 | Iustin Pop | |
2566 | 3f78eef2 | Iustin Pop | @classmethod
|
2567 | 3f78eef2 | Iustin Pop | def _ConvertPath(cls, dev_path): |
2568 | 3f78eef2 | Iustin Pop | """Converts a /dev/name path to the cache file name.
|
2569 | 3f78eef2 | Iustin Pop |
|
2570 | 3f78eef2 | Iustin Pop | This replaces slashes with underscores and strips the /dev
|
2571 | 10c2650b | Iustin Pop | prefix. It then returns the full path to the cache file.
|
2572 | 10c2650b | Iustin Pop |
|
2573 | 10c2650b | Iustin Pop | @type dev_path: str
|
2574 | 10c2650b | Iustin Pop | @param dev_path: the C{/dev/} path name
|
2575 | 10c2650b | Iustin Pop | @rtype: str
|
2576 | 10c2650b | Iustin Pop | @return: the converted path name
|
2577 | 3f78eef2 | Iustin Pop |
|
2578 | 3f78eef2 | Iustin Pop | """
|
2579 | 3f78eef2 | Iustin Pop | if dev_path.startswith(cls._DEV_PREFIX):
|
2580 | 3f78eef2 | Iustin Pop | dev_path = dev_path[len(cls._DEV_PREFIX):]
|
2581 | 3f78eef2 | Iustin Pop | dev_path = dev_path.replace("/", "_") |
2582 | 3f78eef2 | Iustin Pop | fpath = "%s/bdev_%s" % (cls._ROOT_DIR, dev_path)
|
2583 | 3f78eef2 | Iustin Pop | return fpath
|
2584 | 3f78eef2 | Iustin Pop | |
2585 | 3f78eef2 | Iustin Pop | @classmethod
|
2586 | 3f78eef2 | Iustin Pop | def UpdateCache(cls, dev_path, owner, on_primary, iv_name): |
2587 | 3f78eef2 | Iustin Pop | """Updates the cache information for a given device.
|
2588 | 3f78eef2 | Iustin Pop |
|
2589 | 10c2650b | Iustin Pop | @type dev_path: str
|
2590 | 10c2650b | Iustin Pop | @param dev_path: the pathname of the device
|
2591 | 10c2650b | Iustin Pop | @type owner: str
|
2592 | 10c2650b | Iustin Pop | @param owner: the owner (instance name) of the device
|
2593 | 10c2650b | Iustin Pop | @type on_primary: bool
|
2594 | 10c2650b | Iustin Pop | @param on_primary: whether this is the primary
|
2595 | 10c2650b | Iustin Pop | node nor not
|
2596 | 10c2650b | Iustin Pop | @type iv_name: str
|
2597 | 10c2650b | Iustin Pop | @param iv_name: the instance-visible name of the
|
2598 | c41eea6e | Iustin Pop | device, as in objects.Disk.iv_name
|
2599 | 10c2650b | Iustin Pop |
|
2600 | 10c2650b | Iustin Pop | @rtype: None
|
2601 | 10c2650b | Iustin Pop |
|
2602 | 3f78eef2 | Iustin Pop | """
|
2603 | cf5a8306 | Iustin Pop | if dev_path is None: |
2604 | 18682bca | Iustin Pop | logging.error("DevCacheManager.UpdateCache got a None dev_path")
|
2605 | cf5a8306 | Iustin Pop | return
|
2606 | 3f78eef2 | Iustin Pop | fpath = cls._ConvertPath(dev_path) |
2607 | 3f78eef2 | Iustin Pop | if on_primary:
|
2608 | 3f78eef2 | Iustin Pop | state = "primary"
|
2609 | 3f78eef2 | Iustin Pop | else:
|
2610 | 3f78eef2 | Iustin Pop | state = "secondary"
|
2611 | 3f78eef2 | Iustin Pop | if iv_name is None: |
2612 | 3f78eef2 | Iustin Pop | iv_name = "not_visible"
|
2613 | 3f78eef2 | Iustin Pop | fdata = "%s %s %s\n" % (str(owner), state, iv_name) |
2614 | 3f78eef2 | Iustin Pop | try:
|
2615 | 3f78eef2 | Iustin Pop | utils.WriteFile(fpath, data=fdata) |
2616 | 3f78eef2 | Iustin Pop | except EnvironmentError, err: |
2617 | 29921401 | Iustin Pop | logging.exception("Can't update bdev cache for %s: %s", dev_path, err)
|
2618 | 3f78eef2 | Iustin Pop | |
2619 | 3f78eef2 | Iustin Pop | @classmethod
|
2620 | 3f78eef2 | Iustin Pop | def RemoveCache(cls, dev_path): |
2621 | 3f78eef2 | Iustin Pop | """Remove data for a dev_path.
|
2622 | 3f78eef2 | Iustin Pop |
|
2623 | 10c2650b | Iustin Pop | This is just a wrapper over L{utils.RemoveFile} with a converted
|
2624 | 10c2650b | Iustin Pop | path name and logging.
|
2625 | 10c2650b | Iustin Pop |
|
2626 | 10c2650b | Iustin Pop | @type dev_path: str
|
2627 | 10c2650b | Iustin Pop | @param dev_path: the pathname of the device
|
2628 | 10c2650b | Iustin Pop |
|
2629 | 10c2650b | Iustin Pop | @rtype: None
|
2630 | 10c2650b | Iustin Pop |
|
2631 | 3f78eef2 | Iustin Pop | """
|
2632 | cf5a8306 | Iustin Pop | if dev_path is None: |
2633 | 18682bca | Iustin Pop | logging.error("DevCacheManager.RemoveCache got a None dev_path")
|
2634 | cf5a8306 | Iustin Pop | return
|
2635 | 3f78eef2 | Iustin Pop | fpath = cls._ConvertPath(dev_path) |
2636 | 3f78eef2 | Iustin Pop | try:
|
2637 | 3f78eef2 | Iustin Pop | utils.RemoveFile(fpath) |
2638 | 3f78eef2 | Iustin Pop | except EnvironmentError, err: |
2639 | 29921401 | Iustin Pop | logging.exception("Can't update bdev cache for %s: %s", dev_path, err) |