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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 | 360b0dc2 | Iustin Pop | """Functions used by the node daemon
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23 | 360b0dc2 | Iustin Pop |
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24 | 360b0dc2 | Iustin Pop | @var _ALLOWED_UPLOAD_FILES: denotes which files are accepted in
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25 | 360b0dc2 | Iustin Pop | the L{UploadFile} function
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26 | 714ea7ca | Iustin Pop | @var _ALLOWED_CLEAN_DIRS: denotes which directories are accepted
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27 | 714ea7ca | Iustin Pop | in the L{_CleanDirectory} function
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28 | 360b0dc2 | Iustin Pop |
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29 | 360b0dc2 | Iustin Pop | """
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30 | a8083063 | Iustin Pop | |
31 | 6c881c52 | Iustin Pop | # pylint: disable-msg=E1103
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32 | 6c881c52 | Iustin Pop | |
33 | 6c881c52 | Iustin Pop | # E1103: %s %r has no %r member (but some types could not be
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34 | 6c881c52 | Iustin Pop | # inferred), because the _TryOSFromDisk returns either (True, os_obj)
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35 | 6c881c52 | Iustin Pop | # or (False, "string") which confuses pylint
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36 | 6c881c52 | Iustin Pop | |
37 | a8083063 | Iustin Pop | |
38 | a8083063 | Iustin Pop | import os |
39 | a8083063 | Iustin Pop | import os.path |
40 | a8083063 | Iustin Pop | import shutil |
41 | a8083063 | Iustin Pop | import time |
42 | a8083063 | Iustin Pop | import stat |
43 | a8083063 | Iustin Pop | import errno |
44 | a8083063 | Iustin Pop | import re |
45 | b544cfe0 | Iustin Pop | import random |
46 | 18682bca | Iustin Pop | import logging |
47 | 3b9e6a30 | Iustin Pop | import tempfile |
48 | 12bce260 | Michael Hanselmann | import zlib |
49 | 12bce260 | Michael Hanselmann | import base64 |
50 | a8083063 | Iustin Pop | |
51 | a8083063 | Iustin Pop | from ganeti import errors |
52 | a8083063 | Iustin Pop | from ganeti import utils |
53 | a8083063 | Iustin Pop | from ganeti import ssh |
54 | a8083063 | Iustin Pop | from ganeti import hypervisor |
55 | a8083063 | Iustin Pop | from ganeti import constants |
56 | a8083063 | Iustin Pop | from ganeti import bdev |
57 | a8083063 | Iustin Pop | from ganeti import objects |
58 | 880478f8 | Iustin Pop | from ganeti import ssconf |
59 | a8083063 | Iustin Pop | |
60 | a8083063 | Iustin Pop | |
61 | 13998ef2 | Michael Hanselmann | _BOOT_ID_PATH = "/proc/sys/kernel/random/boot_id"
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62 | 714ea7ca | Iustin Pop | _ALLOWED_CLEAN_DIRS = frozenset([
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63 | 714ea7ca | Iustin Pop | constants.DATA_DIR, |
64 | 714ea7ca | Iustin Pop | constants.JOB_QUEUE_ARCHIVE_DIR, |
65 | 714ea7ca | Iustin Pop | constants.QUEUE_DIR, |
66 | 714ea7ca | Iustin Pop | ]) |
67 | 13998ef2 | Michael Hanselmann | |
68 | 13998ef2 | Michael Hanselmann | |
69 | 2cc6781a | Iustin Pop | class RPCFail(Exception): |
70 | 2cc6781a | Iustin Pop | """Class denoting RPC failure.
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71 | 2cc6781a | Iustin Pop |
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72 | 2cc6781a | Iustin Pop | Its argument is the error message.
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73 | 2cc6781a | Iustin Pop |
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74 | 2cc6781a | Iustin Pop | """
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75 | 2cc6781a | Iustin Pop | |
76 | 13998ef2 | Michael Hanselmann | |
77 | 2cc6781a | Iustin Pop | def _Fail(msg, *args, **kwargs): |
78 | 2cc6781a | Iustin Pop | """Log an error and the raise an RPCFail exception.
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79 | 2cc6781a | Iustin Pop |
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80 | 2cc6781a | Iustin Pop | This exception is then handled specially in the ganeti daemon and
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81 | 2cc6781a | Iustin Pop | turned into a 'failed' return type. As such, this function is a
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82 | 2cc6781a | Iustin Pop | useful shortcut for logging the error and returning it to the master
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83 | 2cc6781a | Iustin Pop | daemon.
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84 | 2cc6781a | Iustin Pop |
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85 | 2cc6781a | Iustin Pop | @type msg: string
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86 | 2cc6781a | Iustin Pop | @param msg: the text of the exception
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87 | 2cc6781a | Iustin Pop | @raise RPCFail
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88 | 2cc6781a | Iustin Pop |
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89 | 2cc6781a | Iustin Pop | """
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90 | 2cc6781a | Iustin Pop | if args:
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91 | 2cc6781a | Iustin Pop | msg = msg % args |
92 | afdc3985 | Iustin Pop | if "log" not in kwargs or kwargs["log"]: # if we should log this error |
93 | afdc3985 | Iustin Pop | if "exc" in kwargs and kwargs["exc"]: |
94 | afdc3985 | Iustin Pop | logging.exception(msg) |
95 | afdc3985 | Iustin Pop | else:
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96 | afdc3985 | Iustin Pop | logging.error(msg) |
97 | 2cc6781a | Iustin Pop | raise RPCFail(msg)
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98 | 2cc6781a | Iustin Pop | |
99 | 2cc6781a | Iustin Pop | |
100 | c657dcc9 | Michael Hanselmann | def _GetConfig(): |
101 | 93384844 | Iustin Pop | """Simple wrapper to return a SimpleStore.
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102 | 10c2650b | Iustin Pop |
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103 | 93384844 | Iustin Pop | @rtype: L{ssconf.SimpleStore}
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104 | 93384844 | Iustin Pop | @return: a SimpleStore instance
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105 | 10c2650b | Iustin Pop |
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106 | 10c2650b | Iustin Pop | """
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107 | 93384844 | Iustin Pop | return ssconf.SimpleStore()
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108 | c657dcc9 | Michael Hanselmann | |
109 | c657dcc9 | Michael Hanselmann | |
110 | 62c9ec92 | Iustin Pop | def _GetSshRunner(cluster_name): |
111 | 10c2650b | Iustin Pop | """Simple wrapper to return an SshRunner.
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112 | 10c2650b | Iustin Pop |
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113 | 10c2650b | Iustin Pop | @type cluster_name: str
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114 | 10c2650b | Iustin Pop | @param cluster_name: the cluster name, which is needed
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115 | 10c2650b | Iustin Pop | by the SshRunner constructor
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116 | 10c2650b | Iustin Pop | @rtype: L{ssh.SshRunner}
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117 | 10c2650b | Iustin Pop | @return: an SshRunner instance
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118 | 10c2650b | Iustin Pop |
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119 | 10c2650b | Iustin Pop | """
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120 | 62c9ec92 | Iustin Pop | return ssh.SshRunner(cluster_name)
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121 | c92b310a | Michael Hanselmann | |
122 | c92b310a | Michael Hanselmann | |
123 | 12bce260 | Michael Hanselmann | def _Decompress(data): |
124 | 12bce260 | Michael Hanselmann | """Unpacks data compressed by the RPC client.
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125 | 12bce260 | Michael Hanselmann |
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126 | 12bce260 | Michael Hanselmann | @type data: list or tuple
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127 | 12bce260 | Michael Hanselmann | @param data: Data sent by RPC client
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128 | 12bce260 | Michael Hanselmann | @rtype: str
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129 | 12bce260 | Michael Hanselmann | @return: Decompressed data
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130 | 12bce260 | Michael Hanselmann |
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131 | 12bce260 | Michael Hanselmann | """
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132 | 52e2f66e | Michael Hanselmann | assert isinstance(data, (list, tuple)) |
133 | 12bce260 | Michael Hanselmann | assert len(data) == 2 |
134 | 12bce260 | Michael Hanselmann | (encoding, content) = data |
135 | 12bce260 | Michael Hanselmann | if encoding == constants.RPC_ENCODING_NONE:
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136 | 12bce260 | Michael Hanselmann | return content
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137 | 12bce260 | Michael Hanselmann | elif encoding == constants.RPC_ENCODING_ZLIB_BASE64:
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138 | 12bce260 | Michael Hanselmann | return zlib.decompress(base64.b64decode(content))
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139 | 12bce260 | Michael Hanselmann | else:
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140 | 12bce260 | Michael Hanselmann | raise AssertionError("Unknown data encoding") |
141 | 12bce260 | Michael Hanselmann | |
142 | 12bce260 | Michael Hanselmann | |
143 | 3bc6be5c | Iustin Pop | def _CleanDirectory(path, exclude=None): |
144 | 76ab5558 | Michael Hanselmann | """Removes all regular files in a directory.
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145 | 76ab5558 | Michael Hanselmann |
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146 | 10c2650b | Iustin Pop | @type path: str
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147 | 10c2650b | Iustin Pop | @param path: the directory to clean
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148 | 76ab5558 | Michael Hanselmann | @type exclude: list
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149 | 10c2650b | Iustin Pop | @param exclude: list of files to be excluded, defaults
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150 | 10c2650b | Iustin Pop | to the empty list
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151 | 76ab5558 | Michael Hanselmann |
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152 | 76ab5558 | Michael Hanselmann | """
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153 | 714ea7ca | Iustin Pop | if path not in _ALLOWED_CLEAN_DIRS: |
154 | 714ea7ca | Iustin Pop | _Fail("Path passed to _CleanDirectory not in allowed clean targets: '%s'",
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155 | 714ea7ca | Iustin Pop | path) |
156 | 714ea7ca | Iustin Pop | |
157 | 3956cee1 | Michael Hanselmann | if not os.path.isdir(path): |
158 | 3956cee1 | Michael Hanselmann | return
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159 | 3bc6be5c | Iustin Pop | if exclude is None: |
160 | 3bc6be5c | Iustin Pop | exclude = [] |
161 | 3bc6be5c | Iustin Pop | else:
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162 | 3bc6be5c | Iustin Pop | # Normalize excluded paths
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163 | 3bc6be5c | Iustin Pop | exclude = [os.path.normpath(i) for i in exclude] |
164 | 76ab5558 | Michael Hanselmann | |
165 | 3956cee1 | Michael Hanselmann | for rel_name in utils.ListVisibleFiles(path): |
166 | c4feafe8 | Iustin Pop | full_name = utils.PathJoin(path, rel_name) |
167 | 76ab5558 | Michael Hanselmann | if full_name in exclude: |
168 | 76ab5558 | Michael Hanselmann | continue
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169 | 3956cee1 | Michael Hanselmann | if os.path.isfile(full_name) and not os.path.islink(full_name): |
170 | 3956cee1 | Michael Hanselmann | utils.RemoveFile(full_name) |
171 | 3956cee1 | Michael Hanselmann | |
172 | 3956cee1 | Michael Hanselmann | |
173 | 360b0dc2 | Iustin Pop | def _BuildUploadFileList(): |
174 | 360b0dc2 | Iustin Pop | """Build the list of allowed upload files.
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175 | 360b0dc2 | Iustin Pop |
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176 | 360b0dc2 | Iustin Pop | This is abstracted so that it's built only once at module import time.
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177 | 360b0dc2 | Iustin Pop |
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178 | 360b0dc2 | Iustin Pop | """
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179 | b397a7d2 | Iustin Pop | allowed_files = set([
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180 | b397a7d2 | Iustin Pop | constants.CLUSTER_CONF_FILE, |
181 | b397a7d2 | Iustin Pop | constants.ETC_HOSTS, |
182 | b397a7d2 | Iustin Pop | constants.SSH_KNOWN_HOSTS_FILE, |
183 | b397a7d2 | Iustin Pop | constants.VNC_PASSWORD_FILE, |
184 | b397a7d2 | Iustin Pop | constants.RAPI_CERT_FILE, |
185 | b397a7d2 | Iustin Pop | constants.RAPI_USERS_FILE, |
186 | 6b7d5878 | Michael Hanselmann | constants.CONFD_HMAC_KEY, |
187 | b397a7d2 | Iustin Pop | ]) |
188 | b397a7d2 | Iustin Pop | |
189 | b397a7d2 | Iustin Pop | for hv_name in constants.HYPER_TYPES: |
190 | e5a45a16 | Iustin Pop | hv_class = hypervisor.GetHypervisorClass(hv_name) |
191 | b397a7d2 | Iustin Pop | allowed_files.update(hv_class.GetAncillaryFiles()) |
192 | b397a7d2 | Iustin Pop | |
193 | b397a7d2 | Iustin Pop | return frozenset(allowed_files) |
194 | 360b0dc2 | Iustin Pop | |
195 | 360b0dc2 | Iustin Pop | |
196 | 360b0dc2 | Iustin Pop | _ALLOWED_UPLOAD_FILES = _BuildUploadFileList() |
197 | 360b0dc2 | Iustin Pop | |
198 | 360b0dc2 | Iustin Pop | |
199 | 1bc59f76 | Michael Hanselmann | def JobQueuePurge(): |
200 | 10c2650b | Iustin Pop | """Removes job queue files and archived jobs.
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201 | 10c2650b | Iustin Pop |
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202 | c8457ce7 | Iustin Pop | @rtype: tuple
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203 | c8457ce7 | Iustin Pop | @return: True, None
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204 | 24fc781f | Michael Hanselmann |
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205 | 24fc781f | Michael Hanselmann | """
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206 | 1bc59f76 | Michael Hanselmann | _CleanDirectory(constants.QUEUE_DIR, exclude=[constants.JOB_QUEUE_LOCK_FILE]) |
207 | 24fc781f | Michael Hanselmann | _CleanDirectory(constants.JOB_QUEUE_ARCHIVE_DIR) |
208 | 24fc781f | Michael Hanselmann | |
209 | 24fc781f | Michael Hanselmann | |
210 | bd1e4562 | Iustin Pop | def GetMasterInfo(): |
211 | bd1e4562 | Iustin Pop | """Returns master information.
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212 | bd1e4562 | Iustin Pop |
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213 | bd1e4562 | Iustin Pop | This is an utility function to compute master information, either
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214 | bd1e4562 | Iustin Pop | for consumption here or from the node daemon.
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215 | bd1e4562 | Iustin Pop |
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216 | bd1e4562 | Iustin Pop | @rtype: tuple
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217 | c26a6bd2 | Iustin Pop | @return: master_netdev, master_ip, master_name
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218 | 2a52a064 | Iustin Pop | @raise RPCFail: in case of errors
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219 | b1b6ea87 | Iustin Pop |
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220 | b1b6ea87 | Iustin Pop | """
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221 | b1b6ea87 | Iustin Pop | try:
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222 | c657dcc9 | Michael Hanselmann | cfg = _GetConfig() |
223 | c657dcc9 | Michael Hanselmann | master_netdev = cfg.GetMasterNetdev() |
224 | c657dcc9 | Michael Hanselmann | master_ip = cfg.GetMasterIP() |
225 | c657dcc9 | Michael Hanselmann | master_node = cfg.GetMasterNode() |
226 | b1b6ea87 | Iustin Pop | except errors.ConfigurationError, err:
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227 | 29921401 | Iustin Pop | _Fail("Cluster configuration incomplete: %s", err, exc=True) |
228 | bd1e4562 | Iustin Pop | return (master_netdev, master_ip, master_node)
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229 | b1b6ea87 | Iustin Pop | |
230 | b1b6ea87 | Iustin Pop | |
231 | 3583908a | Guido Trotter | def StartMaster(start_daemons, no_voting): |
232 | a8083063 | Iustin Pop | """Activate local node as master node.
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233 | a8083063 | Iustin Pop |
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234 | 1c65840b | Iustin Pop | The function will always try activate the IP address of the master
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235 | 10c2650b | Iustin Pop | (unless someone else has it). It will also start the master daemons,
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236 | 10c2650b | Iustin Pop | based on the start_daemons parameter.
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237 | 10c2650b | Iustin Pop |
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238 | 10c2650b | Iustin Pop | @type start_daemons: boolean
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239 | c26a6bd2 | Iustin Pop | @param start_daemons: whether to also start the master
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240 | 10c2650b | Iustin Pop | daemons (ganeti-masterd and ganeti-rapi)
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241 | 3583908a | Guido Trotter | @type no_voting: boolean
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242 | 3583908a | Guido Trotter | @param no_voting: whether to start ganeti-masterd without a node vote
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243 | 3583908a | Guido Trotter | (if start_daemons is True), but still non-interactively
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244 | 10c2650b | Iustin Pop | @rtype: None
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245 | a8083063 | Iustin Pop |
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246 | a8083063 | Iustin Pop | """
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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 | 396b5733 | Iustin Pop | err_msgs = [] |
251 | b1b6ea87 | Iustin Pop | if utils.TcpPing(master_ip, constants.DEFAULT_NODED_PORT):
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252 | caad16e2 | Iustin Pop | if utils.OwnIpAddress(master_ip):
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253 | b1b6ea87 | Iustin Pop | # we already have the ip:
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254 | b726aff0 | Iustin Pop | logging.debug("Master IP already configured, doing nothing")
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255 | b1b6ea87 | Iustin Pop | else:
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256 | b726aff0 | Iustin Pop | msg = "Someone else has the master ip, not activating"
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257 | b726aff0 | Iustin Pop | logging.error(msg) |
258 | 396b5733 | Iustin Pop | err_msgs.append(msg) |
259 | b1b6ea87 | Iustin Pop | else:
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260 | b1b6ea87 | Iustin Pop | result = utils.RunCmd(["ip", "address", "add", "%s/32" % master_ip, |
261 | b1b6ea87 | Iustin Pop | "dev", master_netdev, "label", |
262 | b1b6ea87 | Iustin Pop | "%s:0" % master_netdev])
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263 | b1b6ea87 | Iustin Pop | if result.failed:
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264 | b726aff0 | Iustin Pop | msg = "Can't activate master IP: %s" % result.output
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265 | b726aff0 | Iustin Pop | logging.error(msg) |
266 | 396b5733 | Iustin Pop | err_msgs.append(msg) |
267 | b1b6ea87 | Iustin Pop | |
268 | b1b6ea87 | Iustin Pop | result = utils.RunCmd(["arping", "-q", "-U", "-c 3", "-I", master_netdev, |
269 | b1b6ea87 | Iustin Pop | "-s", master_ip, master_ip])
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270 | b1b6ea87 | Iustin Pop | # we'll ignore the exit code of arping
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271 | b1b6ea87 | Iustin Pop | |
272 | b1b6ea87 | Iustin Pop | # and now start the master and rapi daemons
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273 | b1b6ea87 | Iustin Pop | if start_daemons:
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274 | 3583908a | Guido Trotter | if no_voting:
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275 | f154a7a3 | Michael Hanselmann | masterd_args = "--no-voting --yes-do-it"
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276 | f154a7a3 | Michael Hanselmann | else:
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277 | f154a7a3 | Michael Hanselmann | masterd_args = ""
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278 | f154a7a3 | Michael Hanselmann | |
279 | f154a7a3 | Michael Hanselmann | env = { |
280 | f154a7a3 | Michael Hanselmann | "EXTRA_MASTERD_ARGS": masterd_args,
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281 | f154a7a3 | Michael Hanselmann | } |
282 | f154a7a3 | Michael Hanselmann | |
283 | f154a7a3 | Michael Hanselmann | result = utils.RunCmd([constants.DAEMON_UTIL, "start-master"], env=env)
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284 | f154a7a3 | Michael Hanselmann | if result.failed:
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285 | f154a7a3 | Michael Hanselmann | msg = "Can't start Ganeti master: %s" % result.output
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286 | f154a7a3 | Michael Hanselmann | logging.error(msg) |
287 | f154a7a3 | Michael Hanselmann | err_msgs.append(msg) |
288 | b726aff0 | Iustin Pop | |
289 | 396b5733 | Iustin Pop | if err_msgs:
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290 | 396b5733 | Iustin Pop | _Fail("; ".join(err_msgs))
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291 | afdc3985 | Iustin Pop | |
292 | a8083063 | Iustin Pop | |
293 | 1c65840b | Iustin Pop | def StopMaster(stop_daemons): |
294 | a8083063 | Iustin Pop | """Deactivate this node as master.
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295 | a8083063 | Iustin Pop |
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296 | 1c65840b | Iustin Pop | The function will always try to deactivate the IP address of the
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297 | 10c2650b | Iustin Pop | master. It will also stop the master daemons depending on the
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298 | 10c2650b | Iustin Pop | stop_daemons parameter.
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299 | 10c2650b | Iustin Pop |
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300 | 10c2650b | Iustin Pop | @type stop_daemons: boolean
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301 | 10c2650b | Iustin Pop | @param stop_daemons: whether to also stop the master daemons
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302 | 10c2650b | Iustin Pop | (ganeti-masterd and ganeti-rapi)
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303 | 10c2650b | Iustin Pop | @rtype: None
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304 | a8083063 | Iustin Pop |
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305 | a8083063 | Iustin Pop | """
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306 | 6c00d19a | Iustin Pop | # TODO: log and report back to the caller the error failures; we
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307 | 6c00d19a | Iustin Pop | # need to decide in which case we fail the RPC for this
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308 | 2a52a064 | Iustin Pop | |
309 | 2a52a064 | Iustin Pop | # GetMasterInfo will raise an exception if not able to return data
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310 | 541741d3 | Guido Trotter | master_netdev, master_ip, _ = GetMasterInfo() |
311 | a8083063 | Iustin Pop | |
312 | b1b6ea87 | Iustin Pop | result = utils.RunCmd(["ip", "address", "del", "%s/32" % master_ip, |
313 | b1b6ea87 | Iustin Pop | "dev", master_netdev])
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314 | a8083063 | Iustin Pop | if result.failed:
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315 | 3b9e6a30 | Iustin Pop | logging.error("Can't remove the master IP, error: %s", result.output)
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316 | b1b6ea87 | Iustin Pop | # but otherwise ignore the failure
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317 | b1b6ea87 | Iustin Pop | |
318 | b1b6ea87 | Iustin Pop | if stop_daemons:
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319 | f154a7a3 | Michael Hanselmann | result = utils.RunCmd([constants.DAEMON_UTIL, "stop-master"])
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320 | f154a7a3 | Michael Hanselmann | if result.failed:
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321 | f154a7a3 | Michael Hanselmann | logging.error("Could not stop Ganeti master, command %s had exitcode %s"
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322 | f154a7a3 | Michael Hanselmann | " and error %s",
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323 | f154a7a3 | Michael Hanselmann | result.cmd, result.exit_code, result.output) |
324 | a8083063 | Iustin Pop | |
325 | a8083063 | Iustin Pop | |
326 | 9716fdce | Iustin Pop | def AddNode(dsa, dsapub, rsa, rsapub, sshkey, sshpub): |
327 | 7900ed01 | Iustin Pop | """Joins this node to the cluster.
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328 | a8083063 | Iustin Pop |
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329 | 7900ed01 | Iustin Pop | This does the following:
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330 | 7900ed01 | Iustin Pop | - updates the hostkeys of the machine (rsa and dsa)
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331 | 7900ed01 | Iustin Pop | - adds the ssh private key to the user
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332 | 7900ed01 | Iustin Pop | - adds the ssh public key to the users' authorized_keys file
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333 | a8083063 | Iustin Pop |
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334 | 10c2650b | Iustin Pop | @type dsa: str
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335 | 10c2650b | Iustin Pop | @param dsa: the DSA private key to write
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336 | 10c2650b | Iustin Pop | @type dsapub: str
|
337 | 10c2650b | Iustin Pop | @param dsapub: the DSA public key to write
|
338 | 10c2650b | Iustin Pop | @type rsa: str
|
339 | 10c2650b | Iustin Pop | @param rsa: the RSA private key to write
|
340 | 10c2650b | Iustin Pop | @type rsapub: str
|
341 | 10c2650b | Iustin Pop | @param rsapub: the RSA public key to write
|
342 | 10c2650b | Iustin Pop | @type sshkey: str
|
343 | 10c2650b | Iustin Pop | @param sshkey: the SSH private key to write
|
344 | 10c2650b | Iustin Pop | @type sshpub: str
|
345 | 10c2650b | Iustin Pop | @param sshpub: the SSH public key to write
|
346 | 10c2650b | Iustin Pop | @rtype: boolean
|
347 | 10c2650b | Iustin Pop | @return: the success of the operation
|
348 | 10c2650b | Iustin Pop |
|
349 | 7900ed01 | Iustin Pop | """
|
350 | 70d9e3d8 | Iustin Pop | sshd_keys = [(constants.SSH_HOST_RSA_PRIV, rsa, 0600),
|
351 | 70d9e3d8 | Iustin Pop | (constants.SSH_HOST_RSA_PUB, rsapub, 0644),
|
352 | 70d9e3d8 | Iustin Pop | (constants.SSH_HOST_DSA_PRIV, dsa, 0600),
|
353 | 70d9e3d8 | Iustin Pop | (constants.SSH_HOST_DSA_PUB, dsapub, 0644)]
|
354 | 7900ed01 | Iustin Pop | for name, content, mode in sshd_keys: |
355 | 70d9e3d8 | Iustin Pop | utils.WriteFile(name, data=content, mode=mode) |
356 | a8083063 | Iustin Pop | |
357 | 70d9e3d8 | Iustin Pop | try:
|
358 | 70d9e3d8 | Iustin Pop | priv_key, pub_key, auth_keys = ssh.GetUserFiles(constants.GANETI_RUNAS, |
359 | 70d9e3d8 | Iustin Pop | mkdir=True)
|
360 | 70d9e3d8 | Iustin Pop | except errors.OpExecError, err:
|
361 | 2cc6781a | Iustin Pop | _Fail("Error while processing user ssh files: %s", err, exc=True) |
362 | a8083063 | Iustin Pop | |
363 | 70d9e3d8 | Iustin Pop | for name, content in [(priv_key, sshkey), (pub_key, sshpub)]: |
364 | 70d9e3d8 | Iustin Pop | utils.WriteFile(name, data=content, mode=0600)
|
365 | a8083063 | Iustin Pop | |
366 | 70d9e3d8 | Iustin Pop | utils.AddAuthorizedKey(auth_keys, sshpub) |
367 | a8083063 | Iustin Pop | |
368 | 7e1fac25 | Michael Hanselmann | result = utils.RunCmd([constants.DAEMON_UTIL, "reload-ssh-keys"])
|
369 | 7e1fac25 | Michael Hanselmann | if result.failed:
|
370 | 7e1fac25 | Michael Hanselmann | _Fail("Unable to reload SSH keys (command %r, exit code %s, output %r)",
|
371 | 7e1fac25 | Michael Hanselmann | result.cmd, result.exit_code, result.output) |
372 | a8083063 | Iustin Pop | |
373 | a8083063 | Iustin Pop | |
374 | b989b9d9 | Ken Wehr | def LeaveCluster(modify_ssh_setup): |
375 | 10c2650b | Iustin Pop | """Cleans up and remove the current node.
|
376 | 10c2650b | Iustin Pop |
|
377 | 10c2650b | Iustin Pop | This function cleans up and prepares the current node to be removed
|
378 | 10c2650b | Iustin Pop | from the cluster.
|
379 | 10c2650b | Iustin Pop |
|
380 | 10c2650b | Iustin Pop | If processing is successful, then it raises an
|
381 | c41eea6e | Iustin Pop | L{errors.QuitGanetiException} which is used as a special case to
|
382 | 10c2650b | Iustin Pop | shutdown the node daemon.
|
383 | a8083063 | Iustin Pop |
|
384 | b989b9d9 | Ken Wehr | @param modify_ssh_setup: boolean
|
385 | b989b9d9 | Ken Wehr |
|
386 | a8083063 | Iustin Pop | """
|
387 | f78346f5 | Michael Hanselmann | _CleanDirectory(constants.DATA_DIR) |
388 | 1bc59f76 | Michael Hanselmann | JobQueuePurge() |
389 | f78346f5 | Michael Hanselmann | |
390 | b989b9d9 | Ken Wehr | if modify_ssh_setup:
|
391 | b989b9d9 | Ken Wehr | try:
|
392 | b989b9d9 | Ken Wehr | priv_key, pub_key, auth_keys = ssh.GetUserFiles(constants.GANETI_RUNAS) |
393 | 7900ed01 | Iustin Pop | |
394 | b989b9d9 | Ken Wehr | utils.RemoveAuthorizedKey(auth_keys, utils.ReadFile(pub_key)) |
395 | a8083063 | Iustin Pop | |
396 | b989b9d9 | Ken Wehr | utils.RemoveFile(priv_key) |
397 | b989b9d9 | Ken Wehr | utils.RemoveFile(pub_key) |
398 | b989b9d9 | Ken Wehr | except errors.OpExecError:
|
399 | b989b9d9 | Ken Wehr | logging.exception("Error while processing ssh files")
|
400 | a8083063 | Iustin Pop | |
401 | ed008420 | Guido Trotter | try:
|
402 | 6b7d5878 | Michael Hanselmann | utils.RemoveFile(constants.CONFD_HMAC_KEY) |
403 | ed008420 | Guido Trotter | utils.RemoveFile(constants.RAPI_CERT_FILE) |
404 | 168c1de2 | Michael Hanselmann | utils.RemoveFile(constants.NODED_CERT_FILE) |
405 | 7260cfbe | Iustin Pop | except: # pylint: disable-msg=W0702 |
406 | ed008420 | Guido Trotter | logging.exception("Error while removing cluster secrets")
|
407 | ed008420 | Guido Trotter | |
408 | f154a7a3 | Michael Hanselmann | result = utils.RunCmd([constants.DAEMON_UTIL, "stop", constants.CONFD])
|
409 | f154a7a3 | Michael Hanselmann | if result.failed:
|
410 | f154a7a3 | Michael Hanselmann | logging.error("Command %s failed with exitcode %s and error %s",
|
411 | f154a7a3 | Michael Hanselmann | result.cmd, result.exit_code, result.output) |
412 | ed008420 | Guido Trotter | |
413 | 0623d351 | Iustin Pop | # Raise a custom exception (handled in ganeti-noded)
|
414 | 0623d351 | Iustin Pop | raise errors.QuitGanetiException(True, 'Shutdown scheduled') |
415 | 6d8b6238 | Guido Trotter | |
416 | a8083063 | Iustin Pop | |
417 | e69d05fd | Iustin Pop | def GetNodeInfo(vgname, hypervisor_type): |
418 | 5bbd3f7f | Michael Hanselmann | """Gives back a hash with different information about the node.
|
419 | a8083063 | Iustin Pop |
|
420 | e69d05fd | Iustin Pop | @type vgname: C{string}
|
421 | e69d05fd | Iustin Pop | @param vgname: the name of the volume group to ask for disk space information
|
422 | e69d05fd | Iustin Pop | @type hypervisor_type: C{str}
|
423 | e69d05fd | Iustin Pop | @param hypervisor_type: the name of the hypervisor to ask for
|
424 | e69d05fd | Iustin Pop | memory information
|
425 | e69d05fd | Iustin Pop | @rtype: C{dict}
|
426 | e69d05fd | Iustin Pop | @return: dictionary with the following keys:
|
427 | e69d05fd | Iustin Pop | - vg_size is the size of the configured volume group in MiB
|
428 | e69d05fd | Iustin Pop | - vg_free is the free size of the volume group in MiB
|
429 | e69d05fd | Iustin Pop | - memory_dom0 is the memory allocated for domain0 in MiB
|
430 | e69d05fd | Iustin Pop | - memory_free is the currently available (free) ram in MiB
|
431 | e69d05fd | Iustin Pop | - memory_total is the total number of ram in MiB
|
432 | a8083063 | Iustin Pop |
|
433 | 098c0958 | Michael Hanselmann | """
|
434 | a8083063 | Iustin Pop | outputarray = {} |
435 | a8083063 | Iustin Pop | vginfo = _GetVGInfo(vgname) |
436 | a8083063 | Iustin Pop | outputarray['vg_size'] = vginfo['vg_size'] |
437 | a8083063 | Iustin Pop | outputarray['vg_free'] = vginfo['vg_free'] |
438 | a8083063 | Iustin Pop | |
439 | e69d05fd | Iustin Pop | hyper = hypervisor.GetHypervisor(hypervisor_type) |
440 | a8083063 | Iustin Pop | hyp_info = hyper.GetNodeInfo() |
441 | a8083063 | Iustin Pop | if hyp_info is not None: |
442 | a8083063 | Iustin Pop | outputarray.update(hyp_info) |
443 | a8083063 | Iustin Pop | |
444 | 13998ef2 | Michael Hanselmann | outputarray["bootid"] = utils.ReadFile(_BOOT_ID_PATH, size=128).rstrip("\n") |
445 | 3ef10550 | Michael Hanselmann | |
446 | c26a6bd2 | Iustin Pop | return outputarray
|
447 | a8083063 | Iustin Pop | |
448 | a8083063 | Iustin Pop | |
449 | 62c9ec92 | Iustin Pop | def VerifyNode(what, cluster_name): |
450 | a8083063 | Iustin Pop | """Verify the status of the local node.
|
451 | a8083063 | Iustin Pop |
|
452 | e69d05fd | Iustin Pop | Based on the input L{what} parameter, various checks are done on the
|
453 | e69d05fd | Iustin Pop | local node.
|
454 | e69d05fd | Iustin Pop |
|
455 | e69d05fd | Iustin Pop | If the I{filelist} key is present, this list of
|
456 | e69d05fd | Iustin Pop | files is checksummed and the file/checksum pairs are returned.
|
457 | e69d05fd | Iustin Pop |
|
458 | e69d05fd | Iustin Pop | If the I{nodelist} key is present, we check that we have
|
459 | e69d05fd | Iustin Pop | connectivity via ssh with the target nodes (and check the hostname
|
460 | e69d05fd | Iustin Pop | report).
|
461 | a8083063 | Iustin Pop |
|
462 | e69d05fd | Iustin Pop | If the I{node-net-test} key is present, we check that we have
|
463 | e69d05fd | Iustin Pop | connectivity to the given nodes via both primary IP and, if
|
464 | e69d05fd | Iustin Pop | applicable, secondary IPs.
|
465 | e69d05fd | Iustin Pop |
|
466 | e69d05fd | Iustin Pop | @type what: C{dict}
|
467 | e69d05fd | Iustin Pop | @param what: a dictionary of things to check:
|
468 | e69d05fd | Iustin Pop | - filelist: list of files for which to compute checksums
|
469 | e69d05fd | Iustin Pop | - nodelist: list of nodes we should check ssh communication with
|
470 | e69d05fd | Iustin Pop | - node-net-test: list of nodes we should check node daemon port
|
471 | e69d05fd | Iustin Pop | connectivity with
|
472 | e69d05fd | Iustin Pop | - hypervisor: list with hypervisors to run the verify for
|
473 | 10c2650b | Iustin Pop | @rtype: dict
|
474 | 10c2650b | Iustin Pop | @return: a dictionary with the same keys as the input dict, and
|
475 | 10c2650b | Iustin Pop | values representing the result of the checks
|
476 | a8083063 | Iustin Pop |
|
477 | a8083063 | Iustin Pop | """
|
478 | a8083063 | Iustin Pop | result = {} |
479 | a3a5f850 | Iustin Pop | my_name = utils.HostInfo().name |
480 | a3a5f850 | Iustin Pop | port = utils.GetDaemonPort(constants.NODED) |
481 | a8083063 | Iustin Pop | |
482 | 25361b9a | Iustin Pop | if constants.NV_HYPERVISOR in what: |
483 | 25361b9a | Iustin Pop | result[constants.NV_HYPERVISOR] = tmp = {} |
484 | 25361b9a | Iustin Pop | for hv_name in what[constants.NV_HYPERVISOR]: |
485 | 0cf5e7f5 | Iustin Pop | try:
|
486 | 0cf5e7f5 | Iustin Pop | val = hypervisor.GetHypervisor(hv_name).Verify() |
487 | 0cf5e7f5 | Iustin Pop | except errors.HypervisorError, err:
|
488 | 0cf5e7f5 | Iustin Pop | val = "Error while checking hypervisor: %s" % str(err) |
489 | 0cf5e7f5 | Iustin Pop | tmp[hv_name] = val |
490 | 25361b9a | Iustin Pop | |
491 | 25361b9a | Iustin Pop | if constants.NV_FILELIST in what: |
492 | 25361b9a | Iustin Pop | result[constants.NV_FILELIST] = utils.FingerprintFiles( |
493 | 25361b9a | Iustin Pop | what[constants.NV_FILELIST]) |
494 | 25361b9a | Iustin Pop | |
495 | 25361b9a | Iustin Pop | if constants.NV_NODELIST in what: |
496 | 25361b9a | Iustin Pop | result[constants.NV_NODELIST] = tmp = {} |
497 | 25361b9a | Iustin Pop | random.shuffle(what[constants.NV_NODELIST]) |
498 | 25361b9a | Iustin Pop | for node in what[constants.NV_NODELIST]: |
499 | 62c9ec92 | Iustin Pop | success, message = _GetSshRunner(cluster_name).VerifyNodeHostname(node) |
500 | a8083063 | Iustin Pop | if not success: |
501 | 25361b9a | Iustin Pop | tmp[node] = message |
502 | 25361b9a | Iustin Pop | |
503 | 25361b9a | Iustin Pop | if constants.NV_NODENETTEST in what: |
504 | 25361b9a | Iustin Pop | result[constants.NV_NODENETTEST] = tmp = {} |
505 | 9d4bfc96 | Iustin Pop | my_pip = my_sip = None
|
506 | 25361b9a | Iustin Pop | for name, pip, sip in what[constants.NV_NODENETTEST]: |
507 | 9d4bfc96 | Iustin Pop | if name == my_name:
|
508 | 9d4bfc96 | Iustin Pop | my_pip = pip |
509 | 9d4bfc96 | Iustin Pop | my_sip = sip |
510 | 9d4bfc96 | Iustin Pop | break
|
511 | 9d4bfc96 | Iustin Pop | if not my_pip: |
512 | 25361b9a | Iustin Pop | tmp[my_name] = ("Can't find my own primary/secondary IP"
|
513 | 25361b9a | Iustin Pop | " in the node list")
|
514 | 9d4bfc96 | Iustin Pop | else:
|
515 | 25361b9a | Iustin Pop | for name, pip, sip in what[constants.NV_NODENETTEST]: |
516 | 9d4bfc96 | Iustin Pop | fail = [] |
517 | 9d4bfc96 | Iustin Pop | if not utils.TcpPing(pip, port, source=my_pip): |
518 | 9d4bfc96 | Iustin Pop | fail.append("primary")
|
519 | 9d4bfc96 | Iustin Pop | if sip != pip:
|
520 | 9d4bfc96 | Iustin Pop | if not utils.TcpPing(sip, port, source=my_sip): |
521 | 9d4bfc96 | Iustin Pop | fail.append("secondary")
|
522 | 9d4bfc96 | Iustin Pop | if fail:
|
523 | 25361b9a | Iustin Pop | tmp[name] = ("failure using the %s interface(s)" %
|
524 | 25361b9a | Iustin Pop | " and ".join(fail))
|
525 | 25361b9a | Iustin Pop | |
526 | a3a5f850 | Iustin Pop | if constants.NV_MASTERIP in what: |
527 | a3a5f850 | Iustin Pop | # FIXME: add checks on incoming data structures (here and in the
|
528 | a3a5f850 | Iustin Pop | # rest of the function)
|
529 | a3a5f850 | Iustin Pop | master_name, master_ip = what[constants.NV_MASTERIP] |
530 | a3a5f850 | Iustin Pop | if master_name == my_name:
|
531 | a3a5f850 | Iustin Pop | source = constants.LOCALHOST_IP_ADDRESS |
532 | a3a5f850 | Iustin Pop | else:
|
533 | a3a5f850 | Iustin Pop | source = None
|
534 | a3a5f850 | Iustin Pop | result[constants.NV_MASTERIP] = utils.TcpPing(master_ip, port, |
535 | a3a5f850 | Iustin Pop | source=source) |
536 | a3a5f850 | Iustin Pop | |
537 | 25361b9a | Iustin Pop | if constants.NV_LVLIST in what: |
538 | ed904904 | Iustin Pop | try:
|
539 | ed904904 | Iustin Pop | val = GetVolumeList(what[constants.NV_LVLIST]) |
540 | ed904904 | Iustin Pop | except RPCFail, err:
|
541 | ed904904 | Iustin Pop | val = str(err)
|
542 | ed904904 | Iustin Pop | result[constants.NV_LVLIST] = val |
543 | 25361b9a | Iustin Pop | |
544 | 25361b9a | Iustin Pop | if constants.NV_INSTANCELIST in what: |
545 | 0cf5e7f5 | Iustin Pop | # GetInstanceList can fail
|
546 | 0cf5e7f5 | Iustin Pop | try:
|
547 | 0cf5e7f5 | Iustin Pop | val = GetInstanceList(what[constants.NV_INSTANCELIST]) |
548 | 0cf5e7f5 | Iustin Pop | except RPCFail, err:
|
549 | 0cf5e7f5 | Iustin Pop | val = str(err)
|
550 | 0cf5e7f5 | Iustin Pop | result[constants.NV_INSTANCELIST] = val |
551 | 25361b9a | Iustin Pop | |
552 | 25361b9a | Iustin Pop | if constants.NV_VGLIST in what: |
553 | e480923b | Iustin Pop | result[constants.NV_VGLIST] = utils.ListVolumeGroups() |
554 | 25361b9a | Iustin Pop | |
555 | d091393e | Iustin Pop | if constants.NV_PVLIST in what: |
556 | d091393e | Iustin Pop | result[constants.NV_PVLIST] = \ |
557 | d091393e | Iustin Pop | bdev.LogicalVolume.GetPVInfo(what[constants.NV_PVLIST], |
558 | d091393e | Iustin Pop | filter_allocatable=False)
|
559 | d091393e | Iustin Pop | |
560 | 25361b9a | Iustin Pop | if constants.NV_VERSION in what: |
561 | e9ce0a64 | Iustin Pop | result[constants.NV_VERSION] = (constants.PROTOCOL_VERSION, |
562 | e9ce0a64 | Iustin Pop | constants.RELEASE_VERSION) |
563 | 25361b9a | Iustin Pop | |
564 | 25361b9a | Iustin Pop | if constants.NV_HVINFO in what: |
565 | 25361b9a | Iustin Pop | hyper = hypervisor.GetHypervisor(what[constants.NV_HVINFO]) |
566 | 25361b9a | Iustin Pop | result[constants.NV_HVINFO] = hyper.GetNodeInfo() |
567 | 9d4bfc96 | Iustin Pop | |
568 | 6d2e83d5 | Iustin Pop | if constants.NV_DRBDLIST in what: |
569 | 6d2e83d5 | Iustin Pop | try:
|
570 | 6d2e83d5 | Iustin Pop | used_minors = bdev.DRBD8.GetUsedDevs().keys() |
571 | f6eaed12 | Iustin Pop | except errors.BlockDeviceError, err:
|
572 | 6d2e83d5 | Iustin Pop | logging.warning("Can't get used minors list", exc_info=True) |
573 | f6eaed12 | Iustin Pop | used_minors = str(err)
|
574 | 6d2e83d5 | Iustin Pop | result[constants.NV_DRBDLIST] = used_minors |
575 | 6d2e83d5 | Iustin Pop | |
576 | 7c0aa8e9 | Iustin Pop | if constants.NV_NODESETUP in what: |
577 | 7c0aa8e9 | Iustin Pop | result[constants.NV_NODESETUP] = tmpr = [] |
578 | 7c0aa8e9 | Iustin Pop | if not os.path.isdir("/sys/block") or not os.path.isdir("/sys/class/net"): |
579 | 7c0aa8e9 | Iustin Pop | tmpr.append("The sysfs filesytem doesn't seem to be mounted"
|
580 | 7c0aa8e9 | Iustin Pop | " under /sys, missing required directories /sys/block"
|
581 | 7c0aa8e9 | Iustin Pop | " and /sys/class/net")
|
582 | 7c0aa8e9 | Iustin Pop | if (not os.path.isdir("/proc/sys") or |
583 | 7c0aa8e9 | Iustin Pop | not os.path.isfile("/proc/sysrq-trigger")): |
584 | 7c0aa8e9 | Iustin Pop | tmpr.append("The procfs filesystem doesn't seem to be mounted"
|
585 | 7c0aa8e9 | Iustin Pop | " under /proc, missing required directory /proc/sys and"
|
586 | 7c0aa8e9 | Iustin Pop | " the file /proc/sysrq-trigger")
|
587 | 313b2dd4 | Michael Hanselmann | |
588 | 313b2dd4 | Michael Hanselmann | if constants.NV_TIME in what: |
589 | 313b2dd4 | Michael Hanselmann | result[constants.NV_TIME] = utils.SplitTime(time.time()) |
590 | 313b2dd4 | Michael Hanselmann | |
591 | c26a6bd2 | Iustin Pop | return result
|
592 | a8083063 | Iustin Pop | |
593 | a8083063 | Iustin Pop | |
594 | a8083063 | Iustin Pop | def GetVolumeList(vg_name): |
595 | a8083063 | Iustin Pop | """Compute list of logical volumes and their size.
|
596 | a8083063 | Iustin Pop |
|
597 | 10c2650b | Iustin Pop | @type vg_name: str
|
598 | 10c2650b | Iustin Pop | @param vg_name: the volume group whose LVs we should list
|
599 | 10c2650b | Iustin Pop | @rtype: dict
|
600 | 10c2650b | Iustin Pop | @return:
|
601 | 10c2650b | Iustin Pop | dictionary of all partions (key) with value being a tuple of
|
602 | 10c2650b | Iustin Pop | their size (in MiB), inactive and online status::
|
603 | 10c2650b | Iustin Pop |
|
604 | 10c2650b | Iustin Pop | {'test1': ('20.06', True, True)}
|
605 | 10c2650b | Iustin Pop |
|
606 | 10c2650b | Iustin Pop | in case of errors, a string is returned with the error
|
607 | 10c2650b | Iustin Pop | details.
|
608 | a8083063 | Iustin Pop |
|
609 | a8083063 | Iustin Pop | """
|
610 | cb2037a2 | Iustin Pop | lvs = {} |
611 | cb2037a2 | Iustin Pop | sep = '|'
|
612 | cb2037a2 | Iustin Pop | result = utils.RunCmd(["lvs", "--noheadings", "--units=m", "--nosuffix", |
613 | cb2037a2 | Iustin Pop | "--separator=%s" % sep,
|
614 | cb2037a2 | Iustin Pop | "-olv_name,lv_size,lv_attr", vg_name])
|
615 | a8083063 | Iustin Pop | if result.failed:
|
616 | 29d376ec | Iustin Pop | _Fail("Failed to list logical volumes, lvs output: %s", result.output)
|
617 | cb2037a2 | Iustin Pop | |
618 | df4c2628 | Iustin Pop | valid_line_re = re.compile("^ *([^|]+)\|([0-9.]+)\|([^|]{6})\|?$")
|
619 | cb2037a2 | Iustin Pop | for line in result.stdout.splitlines(): |
620 | df4c2628 | Iustin Pop | line = line.strip() |
621 | df4c2628 | Iustin Pop | match = valid_line_re.match(line) |
622 | df4c2628 | Iustin Pop | if not match: |
623 | 18682bca | Iustin Pop | logging.error("Invalid line returned from lvs output: '%s'", line)
|
624 | df4c2628 | Iustin Pop | continue
|
625 | df4c2628 | Iustin Pop | name, size, attr = match.groups() |
626 | cb2037a2 | Iustin Pop | inactive = attr[4] == '-' |
627 | cb2037a2 | Iustin Pop | online = attr[5] == 'o' |
628 | 33f2a81a | Iustin Pop | virtual = attr[0] == 'v' |
629 | 33f2a81a | Iustin Pop | if virtual:
|
630 | 33f2a81a | Iustin Pop | # we don't want to report such volumes as existing, since they
|
631 | 33f2a81a | Iustin Pop | # don't really hold data
|
632 | 33f2a81a | Iustin Pop | continue
|
633 | cb2037a2 | Iustin Pop | lvs[name] = (size, inactive, online) |
634 | cb2037a2 | Iustin Pop | |
635 | cb2037a2 | Iustin Pop | return lvs
|
636 | a8083063 | Iustin Pop | |
637 | a8083063 | Iustin Pop | |
638 | a8083063 | Iustin Pop | def ListVolumeGroups(): |
639 | 2f8598a5 | Alexander Schreiber | """List the volume groups and their size.
|
640 | a8083063 | Iustin Pop |
|
641 | 10c2650b | Iustin Pop | @rtype: dict
|
642 | 10c2650b | Iustin Pop | @return: dictionary with keys volume name and values the
|
643 | 10c2650b | Iustin Pop | size of the volume
|
644 | a8083063 | Iustin Pop |
|
645 | a8083063 | Iustin Pop | """
|
646 | c26a6bd2 | Iustin Pop | return utils.ListVolumeGroups()
|
647 | a8083063 | Iustin Pop | |
648 | a8083063 | Iustin Pop | |
649 | dcb93971 | Michael Hanselmann | def NodeVolumes(): |
650 | dcb93971 | Michael Hanselmann | """List all volumes on this node.
|
651 | dcb93971 | Michael Hanselmann |
|
652 | 10c2650b | Iustin Pop | @rtype: list
|
653 | 10c2650b | Iustin Pop | @return:
|
654 | 10c2650b | Iustin Pop | A list of dictionaries, each having four keys:
|
655 | 10c2650b | Iustin Pop | - name: the logical volume name,
|
656 | 10c2650b | Iustin Pop | - size: the size of the logical volume
|
657 | 10c2650b | Iustin Pop | - dev: the physical device on which the LV lives
|
658 | 10c2650b | Iustin Pop | - vg: the volume group to which it belongs
|
659 | 10c2650b | Iustin Pop |
|
660 | 10c2650b | Iustin Pop | In case of errors, we return an empty list and log the
|
661 | 10c2650b | Iustin Pop | error.
|
662 | 10c2650b | Iustin Pop |
|
663 | 10c2650b | Iustin Pop | Note that since a logical volume can live on multiple physical
|
664 | 10c2650b | Iustin Pop | volumes, the resulting list might include a logical volume
|
665 | 10c2650b | Iustin Pop | multiple times.
|
666 | 10c2650b | Iustin Pop |
|
667 | dcb93971 | Michael Hanselmann | """
|
668 | dcb93971 | Michael Hanselmann | result = utils.RunCmd(["lvs", "--noheadings", "--units=m", "--nosuffix", |
669 | dcb93971 | Michael Hanselmann | "--separator=|",
|
670 | dcb93971 | Michael Hanselmann | "--options=lv_name,lv_size,devices,vg_name"])
|
671 | dcb93971 | Michael Hanselmann | if result.failed:
|
672 | 10bfe6cb | Iustin Pop | _Fail("Failed to list logical volumes, lvs output: %s",
|
673 | 10bfe6cb | Iustin Pop | result.output) |
674 | dcb93971 | Michael Hanselmann | |
675 | dcb93971 | Michael Hanselmann | def parse_dev(dev): |
676 | 89e5ab02 | Iustin Pop | return dev.split('(')[0] |
677 | 89e5ab02 | Iustin Pop | |
678 | 89e5ab02 | Iustin Pop | def handle_dev(dev): |
679 | 89e5ab02 | Iustin Pop | return [parse_dev(x) for x in dev.split(",")] |
680 | dcb93971 | Michael Hanselmann | |
681 | dcb93971 | Michael Hanselmann | def map_line(line): |
682 | 89e5ab02 | Iustin Pop | line = [v.strip() for v in line] |
683 | 89e5ab02 | Iustin Pop | return [{'name': line[0], 'size': line[1], |
684 | 89e5ab02 | Iustin Pop | 'dev': dev, 'vg': line[3]} for dev in handle_dev(line[2])] |
685 | 89e5ab02 | Iustin Pop | |
686 | 89e5ab02 | Iustin Pop | all_devs = [] |
687 | 89e5ab02 | Iustin Pop | for line in result.stdout.splitlines(): |
688 | 89e5ab02 | Iustin Pop | if line.count('|') >= 3: |
689 | 89e5ab02 | Iustin Pop | all_devs.extend(map_line(line.split('|')))
|
690 | 89e5ab02 | Iustin Pop | else:
|
691 | 89e5ab02 | Iustin Pop | logging.warning("Strange line in the output from lvs: '%s'", line)
|
692 | 89e5ab02 | Iustin Pop | return all_devs
|
693 | dcb93971 | Michael Hanselmann | |
694 | dcb93971 | Michael Hanselmann | |
695 | a8083063 | Iustin Pop | def BridgesExist(bridges_list): |
696 | 2f8598a5 | Alexander Schreiber | """Check if a list of bridges exist on the current node.
|
697 | a8083063 | Iustin Pop |
|
698 | b1206984 | Iustin Pop | @rtype: boolean
|
699 | b1206984 | Iustin Pop | @return: C{True} if all of them exist, C{False} otherwise
|
700 | a8083063 | Iustin Pop |
|
701 | a8083063 | Iustin Pop | """
|
702 | 35c0c8da | Iustin Pop | missing = [] |
703 | a8083063 | Iustin Pop | for bridge in bridges_list: |
704 | a8083063 | Iustin Pop | if not utils.BridgeExists(bridge): |
705 | 35c0c8da | Iustin Pop | missing.append(bridge) |
706 | a8083063 | Iustin Pop | |
707 | 35c0c8da | Iustin Pop | if missing:
|
708 | 1f864b60 | Iustin Pop | _Fail("Missing bridges %s", utils.CommaJoin(missing))
|
709 | 35c0c8da | Iustin Pop | |
710 | a8083063 | Iustin Pop | |
711 | e69d05fd | Iustin Pop | def GetInstanceList(hypervisor_list): |
712 | 2f8598a5 | Alexander Schreiber | """Provides a list of instances.
|
713 | a8083063 | Iustin Pop |
|
714 | e69d05fd | Iustin Pop | @type hypervisor_list: list
|
715 | e69d05fd | Iustin Pop | @param hypervisor_list: the list of hypervisors to query information
|
716 | e69d05fd | Iustin Pop |
|
717 | e69d05fd | Iustin Pop | @rtype: list
|
718 | e69d05fd | Iustin Pop | @return: a list of all running instances on the current node
|
719 | 10c2650b | Iustin Pop | - instance1.example.com
|
720 | 10c2650b | Iustin Pop | - instance2.example.com
|
721 | a8083063 | Iustin Pop |
|
722 | 098c0958 | Michael Hanselmann | """
|
723 | e69d05fd | Iustin Pop | results = [] |
724 | e69d05fd | Iustin Pop | for hname in hypervisor_list: |
725 | e69d05fd | Iustin Pop | try:
|
726 | e69d05fd | Iustin Pop | names = hypervisor.GetHypervisor(hname).ListInstances() |
727 | e69d05fd | Iustin Pop | results.extend(names) |
728 | e69d05fd | Iustin Pop | except errors.HypervisorError, err:
|
729 | aca13712 | Iustin Pop | _Fail("Error enumerating instances (hypervisor %s): %s",
|
730 | aca13712 | Iustin Pop | hname, err, exc=True)
|
731 | a8083063 | Iustin Pop | |
732 | e69d05fd | Iustin Pop | return results
|
733 | a8083063 | Iustin Pop | |
734 | a8083063 | Iustin Pop | |
735 | e69d05fd | Iustin Pop | def GetInstanceInfo(instance, hname): |
736 | 5bbd3f7f | Michael Hanselmann | """Gives back the information about an instance as a dictionary.
|
737 | a8083063 | Iustin Pop |
|
738 | e69d05fd | Iustin Pop | @type instance: string
|
739 | e69d05fd | Iustin Pop | @param instance: the instance name
|
740 | e69d05fd | Iustin Pop | @type hname: string
|
741 | e69d05fd | Iustin Pop | @param hname: the hypervisor type of the instance
|
742 | a8083063 | Iustin Pop |
|
743 | e69d05fd | Iustin Pop | @rtype: dict
|
744 | e69d05fd | Iustin Pop | @return: dictionary with the following keys:
|
745 | e69d05fd | Iustin Pop | - memory: memory size of instance (int)
|
746 | e69d05fd | Iustin Pop | - state: xen state of instance (string)
|
747 | e69d05fd | Iustin Pop | - time: cpu time of instance (float)
|
748 | a8083063 | Iustin Pop |
|
749 | 098c0958 | Michael Hanselmann | """
|
750 | a8083063 | Iustin Pop | output = {} |
751 | a8083063 | Iustin Pop | |
752 | e69d05fd | Iustin Pop | iinfo = hypervisor.GetHypervisor(hname).GetInstanceInfo(instance) |
753 | a8083063 | Iustin Pop | if iinfo is not None: |
754 | a8083063 | Iustin Pop | output['memory'] = iinfo[2] |
755 | a8083063 | Iustin Pop | output['state'] = iinfo[4] |
756 | a8083063 | Iustin Pop | output['time'] = iinfo[5] |
757 | a8083063 | Iustin Pop | |
758 | c26a6bd2 | Iustin Pop | return output
|
759 | a8083063 | Iustin Pop | |
760 | a8083063 | Iustin Pop | |
761 | 56e7640c | Iustin Pop | def GetInstanceMigratable(instance): |
762 | 56e7640c | Iustin Pop | """Gives whether an instance can be migrated.
|
763 | 56e7640c | Iustin Pop |
|
764 | 56e7640c | Iustin Pop | @type instance: L{objects.Instance}
|
765 | 56e7640c | Iustin Pop | @param instance: object representing the instance to be checked.
|
766 | 56e7640c | Iustin Pop |
|
767 | 56e7640c | Iustin Pop | @rtype: tuple
|
768 | 56e7640c | Iustin Pop | @return: tuple of (result, description) where:
|
769 | 56e7640c | Iustin Pop | - result: whether the instance can be migrated or not
|
770 | 56e7640c | Iustin Pop | - description: a description of the issue, if relevant
|
771 | 56e7640c | Iustin Pop |
|
772 | 56e7640c | Iustin Pop | """
|
773 | 56e7640c | Iustin Pop | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
774 | afdc3985 | Iustin Pop | iname = instance.name |
775 | afdc3985 | Iustin Pop | if iname not in hyper.ListInstances(): |
776 | afdc3985 | Iustin Pop | _Fail("Instance %s is not running", iname)
|
777 | 56e7640c | Iustin Pop | |
778 | 56e7640c | Iustin Pop | for idx in range(len(instance.disks)): |
779 | afdc3985 | Iustin Pop | link_name = _GetBlockDevSymlinkPath(iname, idx) |
780 | 56e7640c | Iustin Pop | if not os.path.islink(link_name): |
781 | afdc3985 | Iustin Pop | _Fail("Instance %s was not restarted since ganeti 1.2.5", iname)
|
782 | 56e7640c | Iustin Pop | |
783 | 56e7640c | Iustin Pop | |
784 | e69d05fd | Iustin Pop | def GetAllInstancesInfo(hypervisor_list): |
785 | a8083063 | Iustin Pop | """Gather data about all instances.
|
786 | a8083063 | Iustin Pop |
|
787 | 10c2650b | Iustin Pop | This is the equivalent of L{GetInstanceInfo}, except that it
|
788 | a8083063 | Iustin Pop | computes data for all instances at once, thus being faster if one
|
789 | a8083063 | Iustin Pop | needs data about more than one instance.
|
790 | a8083063 | Iustin Pop |
|
791 | e69d05fd | Iustin Pop | @type hypervisor_list: list
|
792 | e69d05fd | Iustin Pop | @param hypervisor_list: list of hypervisors to query for instance data
|
793 | e69d05fd | Iustin Pop |
|
794 | 955db481 | Guido Trotter | @rtype: dict
|
795 | e69d05fd | Iustin Pop | @return: dictionary of instance: data, with data having the following keys:
|
796 | e69d05fd | Iustin Pop | - memory: memory size of instance (int)
|
797 | e69d05fd | Iustin Pop | - state: xen state of instance (string)
|
798 | e69d05fd | Iustin Pop | - time: cpu time of instance (float)
|
799 | 10c2650b | Iustin Pop | - vcpus: the number of vcpus
|
800 | a8083063 | Iustin Pop |
|
801 | 098c0958 | Michael Hanselmann | """
|
802 | a8083063 | Iustin Pop | output = {} |
803 | a8083063 | Iustin Pop | |
804 | e69d05fd | Iustin Pop | for hname in hypervisor_list: |
805 | e69d05fd | Iustin Pop | iinfo = hypervisor.GetHypervisor(hname).GetAllInstancesInfo() |
806 | e69d05fd | Iustin Pop | if iinfo:
|
807 | 29921401 | Iustin Pop | for name, _, memory, vcpus, state, times in iinfo: |
808 | f23b5ae8 | Iustin Pop | value = { |
809 | e69d05fd | Iustin Pop | 'memory': memory,
|
810 | e69d05fd | Iustin Pop | 'vcpus': vcpus,
|
811 | e69d05fd | Iustin Pop | 'state': state,
|
812 | e69d05fd | Iustin Pop | 'time': times,
|
813 | e69d05fd | Iustin Pop | } |
814 | b33b6f55 | Iustin Pop | if name in output: |
815 | b33b6f55 | Iustin Pop | # we only check static parameters, like memory and vcpus,
|
816 | b33b6f55 | Iustin Pop | # and not state and time which can change between the
|
817 | b33b6f55 | Iustin Pop | # invocations of the different hypervisors
|
818 | b33b6f55 | Iustin Pop | for key in 'memory', 'vcpus': |
819 | b33b6f55 | Iustin Pop | if value[key] != output[name][key]:
|
820 | 2fa74ef4 | Iustin Pop | _Fail("Instance %s is running twice"
|
821 | 2fa74ef4 | Iustin Pop | " with different parameters", name)
|
822 | f23b5ae8 | Iustin Pop | output[name] = value |
823 | a8083063 | Iustin Pop | |
824 | c26a6bd2 | Iustin Pop | return output
|
825 | a8083063 | Iustin Pop | |
826 | a8083063 | Iustin Pop | |
827 | 81a3406c | Iustin Pop | def _InstanceLogName(kind, os_name, instance): |
828 | 81a3406c | Iustin Pop | """Compute the OS log filename for a given instance and operation.
|
829 | 81a3406c | Iustin Pop |
|
830 | 81a3406c | Iustin Pop | The instance name and os name are passed in as strings since not all
|
831 | 81a3406c | Iustin Pop | operations have these as part of an instance object.
|
832 | 81a3406c | Iustin Pop |
|
833 | 81a3406c | Iustin Pop | @type kind: string
|
834 | 81a3406c | Iustin Pop | @param kind: the operation type (e.g. add, import, etc.)
|
835 | 81a3406c | Iustin Pop | @type os_name: string
|
836 | 81a3406c | Iustin Pop | @param os_name: the os name
|
837 | 81a3406c | Iustin Pop | @type instance: string
|
838 | 81a3406c | Iustin Pop | @param instance: the name of the instance being imported/added/etc.
|
839 | 81a3406c | Iustin Pop |
|
840 | 81a3406c | Iustin Pop | """
|
841 | 1d466a4f | Michael Hanselmann | base = ("%s-%s-%s-%s.log" %
|
842 | 1d466a4f | Michael Hanselmann | (kind, os_name, instance, utils.TimestampForFilename())) |
843 | 81a3406c | Iustin Pop | return utils.PathJoin(constants.LOG_OS_DIR, base)
|
844 | 81a3406c | Iustin Pop | |
845 | 81a3406c | Iustin Pop | |
846 | 4a0e011f | Iustin Pop | def InstanceOsAdd(instance, reinstall, debug): |
847 | 2f8598a5 | Alexander Schreiber | """Add an OS to an instance.
|
848 | a8083063 | Iustin Pop |
|
849 | d15a9ad3 | Guido Trotter | @type instance: L{objects.Instance}
|
850 | d15a9ad3 | Guido Trotter | @param instance: Instance whose OS is to be installed
|
851 | e557bae9 | Guido Trotter | @type reinstall: boolean
|
852 | e557bae9 | Guido Trotter | @param reinstall: whether this is an instance reinstall
|
853 | 4a0e011f | Iustin Pop | @type debug: integer
|
854 | 4a0e011f | Iustin Pop | @param debug: debug level, passed to the OS scripts
|
855 | c26a6bd2 | Iustin Pop | @rtype: None
|
856 | a8083063 | Iustin Pop |
|
857 | a8083063 | Iustin Pop | """
|
858 | 255dcebd | Iustin Pop | inst_os = OSFromDisk(instance.os) |
859 | 255dcebd | Iustin Pop | |
860 | 4a0e011f | Iustin Pop | create_env = OSEnvironment(instance, inst_os, debug) |
861 | e557bae9 | Guido Trotter | if reinstall:
|
862 | e557bae9 | Guido Trotter | create_env['INSTANCE_REINSTALL'] = "1" |
863 | a8083063 | Iustin Pop | |
864 | 81a3406c | Iustin Pop | logfile = _InstanceLogName("add", instance.os, instance.name)
|
865 | decd5f45 | Iustin Pop | |
866 | d868edb4 | Iustin Pop | result = utils.RunCmd([inst_os.create_script], env=create_env, |
867 | d868edb4 | Iustin Pop | cwd=inst_os.path, output=logfile,) |
868 | decd5f45 | Iustin Pop | if result.failed:
|
869 | 18682bca | Iustin Pop | logging.error("os create command '%s' returned error: %s, logfile: %s,"
|
870 | d868edb4 | Iustin Pop | " output: %s", result.cmd, result.fail_reason, logfile,
|
871 | 18682bca | Iustin Pop | result.output) |
872 | 26f15862 | Iustin Pop | lines = [utils.SafeEncode(val) |
873 | 20e01edd | Iustin Pop | for val in utils.TailFile(logfile, lines=20)] |
874 | afdc3985 | Iustin Pop | _Fail("OS create script failed (%s), last lines in the"
|
875 | afdc3985 | Iustin Pop | " log file:\n%s", result.fail_reason, "\n".join(lines), log=False) |
876 | decd5f45 | Iustin Pop | |
877 | decd5f45 | Iustin Pop | |
878 | 4a0e011f | Iustin Pop | def RunRenameInstance(instance, old_name, debug): |
879 | decd5f45 | Iustin Pop | """Run the OS rename script for an instance.
|
880 | decd5f45 | Iustin Pop |
|
881 | b1206984 | Iustin Pop | @type instance: L{objects.Instance}
|
882 | d15a9ad3 | Guido Trotter | @param instance: Instance whose OS is to be installed
|
883 | d15a9ad3 | Guido Trotter | @type old_name: string
|
884 | d15a9ad3 | Guido Trotter | @param old_name: previous instance name
|
885 | 4a0e011f | Iustin Pop | @type debug: integer
|
886 | 4a0e011f | Iustin Pop | @param debug: debug level, passed to the OS scripts
|
887 | 10c2650b | Iustin Pop | @rtype: boolean
|
888 | 10c2650b | Iustin Pop | @return: the success of the operation
|
889 | decd5f45 | Iustin Pop |
|
890 | decd5f45 | Iustin Pop | """
|
891 | decd5f45 | Iustin Pop | inst_os = OSFromDisk(instance.os) |
892 | decd5f45 | Iustin Pop | |
893 | 4a0e011f | Iustin Pop | rename_env = OSEnvironment(instance, inst_os, debug) |
894 | ff38b6c0 | Guido Trotter | rename_env['OLD_INSTANCE_NAME'] = old_name
|
895 | decd5f45 | Iustin Pop | |
896 | 81a3406c | Iustin Pop | logfile = _InstanceLogName("rename", instance.os,
|
897 | 81a3406c | Iustin Pop | "%s-%s" % (old_name, instance.name))
|
898 | a8083063 | Iustin Pop | |
899 | d868edb4 | Iustin Pop | result = utils.RunCmd([inst_os.rename_script], env=rename_env, |
900 | d868edb4 | Iustin Pop | cwd=inst_os.path, output=logfile) |
901 | a8083063 | Iustin Pop | |
902 | a8083063 | Iustin Pop | if result.failed:
|
903 | 18682bca | Iustin Pop | logging.error("os create command '%s' returned error: %s output: %s",
|
904 | d868edb4 | Iustin Pop | result.cmd, result.fail_reason, result.output) |
905 | 26f15862 | Iustin Pop | lines = [utils.SafeEncode(val) |
906 | 96841384 | Iustin Pop | for val in utils.TailFile(logfile, lines=20)] |
907 | afdc3985 | Iustin Pop | _Fail("OS rename script failed (%s), last lines in the"
|
908 | afdc3985 | Iustin Pop | " log file:\n%s", result.fail_reason, "\n".join(lines), log=False) |
909 | a8083063 | Iustin Pop | |
910 | a8083063 | Iustin Pop | |
911 | a8083063 | Iustin Pop | def _GetVGInfo(vg_name): |
912 | 5bbd3f7f | Michael Hanselmann | """Get information about the volume group.
|
913 | a8083063 | Iustin Pop |
|
914 | 10c2650b | Iustin Pop | @type vg_name: str
|
915 | 10c2650b | Iustin Pop | @param vg_name: the volume group which we query
|
916 | 10c2650b | Iustin Pop | @rtype: dict
|
917 | 10c2650b | Iustin Pop | @return:
|
918 | 10c2650b | Iustin Pop | A dictionary with the following keys:
|
919 | 10c2650b | Iustin Pop | - C{vg_size} is the total size of the volume group in MiB
|
920 | 10c2650b | Iustin Pop | - C{vg_free} is the free size of the volume group in MiB
|
921 | 10c2650b | Iustin Pop | - C{pv_count} are the number of physical disks in that VG
|
922 | a8083063 | Iustin Pop |
|
923 | 10c2650b | Iustin Pop | If an error occurs during gathering of data, we return the same dict
|
924 | 10c2650b | Iustin Pop | with keys all set to None.
|
925 | f4d377e7 | Iustin Pop |
|
926 | a8083063 | Iustin Pop | """
|
927 | f4d377e7 | Iustin Pop | retdic = dict.fromkeys(["vg_size", "vg_free", "pv_count"]) |
928 | f4d377e7 | Iustin Pop | |
929 | a8083063 | Iustin Pop | retval = utils.RunCmd(["vgs", "-ovg_size,vg_free,pv_count", "--noheadings", |
930 | a8083063 | Iustin Pop | "--nosuffix", "--units=m", "--separator=:", vg_name]) |
931 | a8083063 | Iustin Pop | |
932 | a8083063 | Iustin Pop | if retval.failed:
|
933 | 18682bca | Iustin Pop | logging.error("volume group %s not present", vg_name)
|
934 | f4d377e7 | Iustin Pop | return retdic
|
935 | d87ae7d2 | Iustin Pop | valarr = retval.stdout.strip().rstrip(':').split(':') |
936 | f4d377e7 | Iustin Pop | if len(valarr) == 3: |
937 | f4d377e7 | Iustin Pop | try:
|
938 | f4d377e7 | Iustin Pop | retdic = { |
939 | f4d377e7 | Iustin Pop | "vg_size": int(round(float(valarr[0]), 0)), |
940 | f4d377e7 | Iustin Pop | "vg_free": int(round(float(valarr[1]), 0)), |
941 | f4d377e7 | Iustin Pop | "pv_count": int(valarr[2]), |
942 | f4d377e7 | Iustin Pop | } |
943 | 691744c4 | Iustin Pop | except (TypeError, ValueError), err: |
944 | 29921401 | Iustin Pop | logging.exception("Fail to parse vgs output: %s", err)
|
945 | f4d377e7 | Iustin Pop | else:
|
946 | 18682bca | Iustin Pop | logging.error("vgs output has the wrong number of fields (expected"
|
947 | 18682bca | Iustin Pop | " three): %s", str(valarr)) |
948 | a8083063 | Iustin Pop | return retdic
|
949 | a8083063 | Iustin Pop | |
950 | a8083063 | Iustin Pop | |
951 | 5282084b | Iustin Pop | def _GetBlockDevSymlinkPath(instance_name, idx): |
952 | c4feafe8 | Iustin Pop | return utils.PathJoin(constants.DISK_LINKS_DIR,
|
953 | c4feafe8 | Iustin Pop | "%s:%d" % (instance_name, idx))
|
954 | 5282084b | Iustin Pop | |
955 | 5282084b | Iustin Pop | |
956 | 5282084b | Iustin Pop | def _SymlinkBlockDev(instance_name, device_path, idx): |
957 | 9332fd8a | Iustin Pop | """Set up symlinks to a instance's block device.
|
958 | 9332fd8a | Iustin Pop |
|
959 | 9332fd8a | Iustin Pop | This is an auxiliary function run when an instance is start (on the primary
|
960 | 9332fd8a | Iustin Pop | node) or when an instance is migrated (on the target node).
|
961 | 9332fd8a | Iustin Pop |
|
962 | 9332fd8a | Iustin Pop |
|
963 | 5282084b | Iustin Pop | @param instance_name: the name of the target instance
|
964 | 5282084b | Iustin Pop | @param device_path: path of the physical block device, on the node
|
965 | 5282084b | Iustin Pop | @param idx: the disk index
|
966 | 5282084b | Iustin Pop | @return: absolute path to the disk's symlink
|
967 | 9332fd8a | Iustin Pop |
|
968 | 9332fd8a | Iustin Pop | """
|
969 | 5282084b | Iustin Pop | link_name = _GetBlockDevSymlinkPath(instance_name, idx) |
970 | 9332fd8a | Iustin Pop | try:
|
971 | 9332fd8a | Iustin Pop | os.symlink(device_path, link_name) |
972 | 5282084b | Iustin Pop | except OSError, err: |
973 | 5282084b | Iustin Pop | if err.errno == errno.EEXIST:
|
974 | 9332fd8a | Iustin Pop | if (not os.path.islink(link_name) or |
975 | 9332fd8a | Iustin Pop | os.readlink(link_name) != device_path): |
976 | 9332fd8a | Iustin Pop | os.remove(link_name) |
977 | 9332fd8a | Iustin Pop | os.symlink(device_path, link_name) |
978 | 9332fd8a | Iustin Pop | else:
|
979 | 9332fd8a | Iustin Pop | raise
|
980 | 9332fd8a | Iustin Pop | |
981 | 9332fd8a | Iustin Pop | return link_name
|
982 | 9332fd8a | Iustin Pop | |
983 | 9332fd8a | Iustin Pop | |
984 | 5282084b | Iustin Pop | def _RemoveBlockDevLinks(instance_name, disks): |
985 | 3c9c571d | Iustin Pop | """Remove the block device symlinks belonging to the given instance.
|
986 | 3c9c571d | Iustin Pop |
|
987 | 3c9c571d | Iustin Pop | """
|
988 | 29921401 | Iustin Pop | for idx, _ in enumerate(disks): |
989 | 5282084b | Iustin Pop | link_name = _GetBlockDevSymlinkPath(instance_name, idx) |
990 | 5282084b | Iustin Pop | if os.path.islink(link_name):
|
991 | 3c9c571d | Iustin Pop | try:
|
992 | 03dfa658 | Iustin Pop | os.remove(link_name) |
993 | 03dfa658 | Iustin Pop | except OSError: |
994 | 03dfa658 | Iustin Pop | logging.exception("Can't remove symlink '%s'", link_name)
|
995 | 3c9c571d | Iustin Pop | |
996 | 3c9c571d | Iustin Pop | |
997 | 9332fd8a | Iustin Pop | def _GatherAndLinkBlockDevs(instance): |
998 | a8083063 | Iustin Pop | """Set up an instance's block device(s).
|
999 | a8083063 | Iustin Pop |
|
1000 | a8083063 | Iustin Pop | This is run on the primary node at instance startup. The block
|
1001 | a8083063 | Iustin Pop | devices must be already assembled.
|
1002 | a8083063 | Iustin Pop |
|
1003 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
1004 | 10c2650b | Iustin Pop | @param instance: the instance whose disks we shoul assemble
|
1005 | 069cfbf1 | Iustin Pop | @rtype: list
|
1006 | 069cfbf1 | Iustin Pop | @return: list of (disk_object, device_path)
|
1007 | 10c2650b | Iustin Pop |
|
1008 | a8083063 | Iustin Pop | """
|
1009 | a8083063 | Iustin Pop | block_devices = [] |
1010 | 9332fd8a | Iustin Pop | for idx, disk in enumerate(instance.disks): |
1011 | a8083063 | Iustin Pop | device = _RecursiveFindBD(disk) |
1012 | a8083063 | Iustin Pop | if device is None: |
1013 | a8083063 | Iustin Pop | raise errors.BlockDeviceError("Block device '%s' is not set up." % |
1014 | a8083063 | Iustin Pop | str(disk))
|
1015 | a8083063 | Iustin Pop | device.Open() |
1016 | 9332fd8a | Iustin Pop | try:
|
1017 | 5282084b | Iustin Pop | link_name = _SymlinkBlockDev(instance.name, device.dev_path, idx) |
1018 | 9332fd8a | Iustin Pop | except OSError, e: |
1019 | 9332fd8a | Iustin Pop | raise errors.BlockDeviceError("Cannot create block device symlink: %s" % |
1020 | 9332fd8a | Iustin Pop | e.strerror) |
1021 | 9332fd8a | Iustin Pop | |
1022 | 9332fd8a | Iustin Pop | block_devices.append((disk, link_name)) |
1023 | 9332fd8a | Iustin Pop | |
1024 | a8083063 | Iustin Pop | return block_devices
|
1025 | a8083063 | Iustin Pop | |
1026 | a8083063 | Iustin Pop | |
1027 | 07813a9e | Iustin Pop | def StartInstance(instance): |
1028 | a8083063 | Iustin Pop | """Start an instance.
|
1029 | a8083063 | Iustin Pop |
|
1030 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
1031 | e69d05fd | Iustin Pop | @param instance: the instance object
|
1032 | c26a6bd2 | Iustin Pop | @rtype: None
|
1033 | a8083063 | Iustin Pop |
|
1034 | 098c0958 | Michael Hanselmann | """
|
1035 | e69d05fd | Iustin Pop | running_instances = GetInstanceList([instance.hypervisor]) |
1036 | a8083063 | Iustin Pop | |
1037 | a8083063 | Iustin Pop | if instance.name in running_instances: |
1038 | c26a6bd2 | Iustin Pop | logging.info("Instance %s already running, not starting", instance.name)
|
1039 | c26a6bd2 | Iustin Pop | return
|
1040 | a8083063 | Iustin Pop | |
1041 | a8083063 | Iustin Pop | try:
|
1042 | ec596c24 | Iustin Pop | block_devices = _GatherAndLinkBlockDevs(instance) |
1043 | ec596c24 | Iustin Pop | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
1044 | 07813a9e | Iustin Pop | hyper.StartInstance(instance, block_devices) |
1045 | ec596c24 | Iustin Pop | except errors.BlockDeviceError, err:
|
1046 | 2cc6781a | Iustin Pop | _Fail("Block device error: %s", err, exc=True) |
1047 | a8083063 | Iustin Pop | except errors.HypervisorError, err:
|
1048 | 5282084b | Iustin Pop | _RemoveBlockDevLinks(instance.name, instance.disks) |
1049 | 2cc6781a | Iustin Pop | _Fail("Hypervisor error: %s", err, exc=True) |
1050 | a8083063 | Iustin Pop | |
1051 | a8083063 | Iustin Pop | |
1052 | 6263189c | Guido Trotter | def InstanceShutdown(instance, timeout): |
1053 | a8083063 | Iustin Pop | """Shut an instance down.
|
1054 | a8083063 | Iustin Pop |
|
1055 | 10c2650b | Iustin Pop | @note: this functions uses polling with a hardcoded timeout.
|
1056 | 10c2650b | Iustin Pop |
|
1057 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
1058 | e69d05fd | Iustin Pop | @param instance: the instance object
|
1059 | 6263189c | Guido Trotter | @type timeout: integer
|
1060 | 6263189c | Guido Trotter | @param timeout: maximum timeout for soft shutdown
|
1061 | c26a6bd2 | Iustin Pop | @rtype: None
|
1062 | a8083063 | Iustin Pop |
|
1063 | 098c0958 | Michael Hanselmann | """
|
1064 | e69d05fd | Iustin Pop | hv_name = instance.hypervisor |
1065 | e4e9b806 | Guido Trotter | hyper = hypervisor.GetHypervisor(hv_name) |
1066 | c26a6bd2 | Iustin Pop | iname = instance.name |
1067 | a8083063 | Iustin Pop | |
1068 | 3c0cdc83 | Michael Hanselmann | if instance.name not in hyper.ListInstances(): |
1069 | c26a6bd2 | Iustin Pop | logging.info("Instance %s not running, doing nothing", iname)
|
1070 | c26a6bd2 | Iustin Pop | return
|
1071 | a8083063 | Iustin Pop | |
1072 | 3c0cdc83 | Michael Hanselmann | class _TryShutdown: |
1073 | 3c0cdc83 | Michael Hanselmann | def __init__(self): |
1074 | 3c0cdc83 | Michael Hanselmann | self.tried_once = False |
1075 | a8083063 | Iustin Pop | |
1076 | 3c0cdc83 | Michael Hanselmann | def __call__(self): |
1077 | 3c0cdc83 | Michael Hanselmann | if iname not in hyper.ListInstances(): |
1078 | 3c0cdc83 | Michael Hanselmann | return
|
1079 | 3c0cdc83 | Michael Hanselmann | |
1080 | 3c0cdc83 | Michael Hanselmann | try:
|
1081 | 3c0cdc83 | Michael Hanselmann | hyper.StopInstance(instance, retry=self.tried_once)
|
1082 | 3c0cdc83 | Michael Hanselmann | except errors.HypervisorError, err:
|
1083 | 3c0cdc83 | Michael Hanselmann | if iname not in hyper.ListInstances(): |
1084 | 3c0cdc83 | Michael Hanselmann | # if the instance is no longer existing, consider this a
|
1085 | 3c0cdc83 | Michael Hanselmann | # success and go to cleanup
|
1086 | 3c0cdc83 | Michael Hanselmann | return
|
1087 | 3c0cdc83 | Michael Hanselmann | |
1088 | 3c0cdc83 | Michael Hanselmann | _Fail("Failed to stop instance %s: %s", iname, err)
|
1089 | 3c0cdc83 | Michael Hanselmann | |
1090 | 3c0cdc83 | Michael Hanselmann | self.tried_once = True |
1091 | 3c0cdc83 | Michael Hanselmann | |
1092 | 3c0cdc83 | Michael Hanselmann | raise utils.RetryAgain()
|
1093 | 3c0cdc83 | Michael Hanselmann | |
1094 | 3c0cdc83 | Michael Hanselmann | try:
|
1095 | 3c0cdc83 | Michael Hanselmann | utils.Retry(_TryShutdown(), 5, timeout)
|
1096 | 3c0cdc83 | Michael Hanselmann | except utils.RetryTimeout:
|
1097 | a8083063 | Iustin Pop | # the shutdown did not succeed
|
1098 | e4e9b806 | Guido Trotter | logging.error("Shutdown of '%s' unsuccessful, forcing", iname)
|
1099 | a8083063 | Iustin Pop | |
1100 | a8083063 | Iustin Pop | try:
|
1101 | a8083063 | Iustin Pop | hyper.StopInstance(instance, force=True)
|
1102 | a8083063 | Iustin Pop | except errors.HypervisorError, err:
|
1103 | 3c0cdc83 | Michael Hanselmann | if iname in hyper.ListInstances(): |
1104 | 3782acd7 | Iustin Pop | # only raise an error if the instance still exists, otherwise
|
1105 | 3782acd7 | Iustin Pop | # the error could simply be "instance ... unknown"!
|
1106 | 3782acd7 | Iustin Pop | _Fail("Failed to force stop instance %s: %s", iname, err)
|
1107 | a8083063 | Iustin Pop | |
1108 | a8083063 | Iustin Pop | time.sleep(1)
|
1109 | 3c0cdc83 | Michael Hanselmann | |
1110 | 3c0cdc83 | Michael Hanselmann | if iname in hyper.ListInstances(): |
1111 | c26a6bd2 | Iustin Pop | _Fail("Could not shutdown instance %s even by destroy", iname)
|
1112 | 3c9c571d | Iustin Pop | |
1113 | f28ec899 | Guido Trotter | try:
|
1114 | f28ec899 | Guido Trotter | hyper.CleanupInstance(instance.name) |
1115 | f28ec899 | Guido Trotter | except errors.HypervisorError, err:
|
1116 | f28ec899 | Guido Trotter | logging.warning("Failed to execute post-shutdown cleanup step: %s", err)
|
1117 | f28ec899 | Guido Trotter | |
1118 | c26a6bd2 | Iustin Pop | _RemoveBlockDevLinks(iname, instance.disks) |
1119 | a8083063 | Iustin Pop | |
1120 | a8083063 | Iustin Pop | |
1121 | 17c3f802 | Guido Trotter | def InstanceReboot(instance, reboot_type, shutdown_timeout): |
1122 | 007a2f3e | Alexander Schreiber | """Reboot an instance.
|
1123 | 007a2f3e | Alexander Schreiber |
|
1124 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
1125 | 10c2650b | Iustin Pop | @param instance: the instance object to reboot
|
1126 | 10c2650b | Iustin Pop | @type reboot_type: str
|
1127 | 10c2650b | Iustin Pop | @param reboot_type: the type of reboot, one the following
|
1128 | 10c2650b | Iustin Pop | constants:
|
1129 | 10c2650b | Iustin Pop | - L{constants.INSTANCE_REBOOT_SOFT}: only reboot the
|
1130 | 10c2650b | Iustin Pop | instance OS, do not recreate the VM
|
1131 | 10c2650b | Iustin Pop | - L{constants.INSTANCE_REBOOT_HARD}: tear down and
|
1132 | 10c2650b | Iustin Pop | restart the VM (at the hypervisor level)
|
1133 | 73e5a4f4 | Iustin Pop | - the other reboot type (L{constants.INSTANCE_REBOOT_FULL}) is
|
1134 | 73e5a4f4 | Iustin Pop | not accepted here, since that mode is handled differently, in
|
1135 | 73e5a4f4 | Iustin Pop | cmdlib, and translates into full stop and start of the
|
1136 | 73e5a4f4 | Iustin Pop | instance (instead of a call_instance_reboot RPC)
|
1137 | 23057d29 | Michael Hanselmann | @type shutdown_timeout: integer
|
1138 | 23057d29 | Michael Hanselmann | @param shutdown_timeout: maximum timeout for soft shutdown
|
1139 | c26a6bd2 | Iustin Pop | @rtype: None
|
1140 | 007a2f3e | Alexander Schreiber |
|
1141 | 007a2f3e | Alexander Schreiber | """
|
1142 | e69d05fd | Iustin Pop | running_instances = GetInstanceList([instance.hypervisor]) |
1143 | 007a2f3e | Alexander Schreiber | |
1144 | 007a2f3e | Alexander Schreiber | if instance.name not in running_instances: |
1145 | 2cc6781a | Iustin Pop | _Fail("Cannot reboot instance %s that is not running", instance.name)
|
1146 | 007a2f3e | Alexander Schreiber | |
1147 | e69d05fd | Iustin Pop | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
1148 | 007a2f3e | Alexander Schreiber | if reboot_type == constants.INSTANCE_REBOOT_SOFT:
|
1149 | 007a2f3e | Alexander Schreiber | try:
|
1150 | 007a2f3e | Alexander Schreiber | hyper.RebootInstance(instance) |
1151 | 007a2f3e | Alexander Schreiber | except errors.HypervisorError, err:
|
1152 | 2cc6781a | Iustin Pop | _Fail("Failed to soft reboot instance %s: %s", instance.name, err)
|
1153 | 007a2f3e | Alexander Schreiber | elif reboot_type == constants.INSTANCE_REBOOT_HARD:
|
1154 | 007a2f3e | Alexander Schreiber | try:
|
1155 | 17c3f802 | Guido Trotter | InstanceShutdown(instance, shutdown_timeout) |
1156 | 07813a9e | Iustin Pop | return StartInstance(instance)
|
1157 | 007a2f3e | Alexander Schreiber | except errors.HypervisorError, err:
|
1158 | 2cc6781a | Iustin Pop | _Fail("Failed to hard reboot instance %s: %s", instance.name, err)
|
1159 | 007a2f3e | Alexander Schreiber | else:
|
1160 | 2cc6781a | Iustin Pop | _Fail("Invalid reboot_type received: %s", reboot_type)
|
1161 | 007a2f3e | Alexander Schreiber | |
1162 | 007a2f3e | Alexander Schreiber | |
1163 | 6906a9d8 | Guido Trotter | def MigrationInfo(instance): |
1164 | 6906a9d8 | Guido Trotter | """Gather information about an instance to be migrated.
|
1165 | 6906a9d8 | Guido Trotter |
|
1166 | 6906a9d8 | Guido Trotter | @type instance: L{objects.Instance}
|
1167 | 6906a9d8 | Guido Trotter | @param instance: the instance definition
|
1168 | 6906a9d8 | Guido Trotter |
|
1169 | 6906a9d8 | Guido Trotter | """
|
1170 | cd42d0ad | Guido Trotter | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
1171 | cd42d0ad | Guido Trotter | try:
|
1172 | cd42d0ad | Guido Trotter | info = hyper.MigrationInfo(instance) |
1173 | cd42d0ad | Guido Trotter | except errors.HypervisorError, err:
|
1174 | 2cc6781a | Iustin Pop | _Fail("Failed to fetch migration information: %s", err, exc=True) |
1175 | c26a6bd2 | Iustin Pop | return info
|
1176 | 6906a9d8 | Guido Trotter | |
1177 | 6906a9d8 | Guido Trotter | |
1178 | 6906a9d8 | Guido Trotter | def AcceptInstance(instance, info, target): |
1179 | 6906a9d8 | Guido Trotter | """Prepare the node to accept an instance.
|
1180 | 6906a9d8 | Guido Trotter |
|
1181 | 6906a9d8 | Guido Trotter | @type instance: L{objects.Instance}
|
1182 | 6906a9d8 | Guido Trotter | @param instance: the instance definition
|
1183 | 6906a9d8 | Guido Trotter | @type info: string/data (opaque)
|
1184 | 6906a9d8 | Guido Trotter | @param info: migration information, from the source node
|
1185 | 6906a9d8 | Guido Trotter | @type target: string
|
1186 | 6906a9d8 | Guido Trotter | @param target: target host (usually ip), on this node
|
1187 | 6906a9d8 | Guido Trotter |
|
1188 | 6906a9d8 | Guido Trotter | """
|
1189 | cd42d0ad | Guido Trotter | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
1190 | cd42d0ad | Guido Trotter | try:
|
1191 | cd42d0ad | Guido Trotter | hyper.AcceptInstance(instance, info, target) |
1192 | cd42d0ad | Guido Trotter | except errors.HypervisorError, err:
|
1193 | 2cc6781a | Iustin Pop | _Fail("Failed to accept instance: %s", err, exc=True) |
1194 | 6906a9d8 | Guido Trotter | |
1195 | 6906a9d8 | Guido Trotter | |
1196 | 6906a9d8 | Guido Trotter | def FinalizeMigration(instance, info, success): |
1197 | 6906a9d8 | Guido Trotter | """Finalize any preparation to accept an instance.
|
1198 | 6906a9d8 | Guido Trotter |
|
1199 | 6906a9d8 | Guido Trotter | @type instance: L{objects.Instance}
|
1200 | 6906a9d8 | Guido Trotter | @param instance: the instance definition
|
1201 | 6906a9d8 | Guido Trotter | @type info: string/data (opaque)
|
1202 | 6906a9d8 | Guido Trotter | @param info: migration information, from the source node
|
1203 | 6906a9d8 | Guido Trotter | @type success: boolean
|
1204 | 6906a9d8 | Guido Trotter | @param success: whether the migration was a success or a failure
|
1205 | 6906a9d8 | Guido Trotter |
|
1206 | 6906a9d8 | Guido Trotter | """
|
1207 | cd42d0ad | Guido Trotter | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
1208 | cd42d0ad | Guido Trotter | try:
|
1209 | cd42d0ad | Guido Trotter | hyper.FinalizeMigration(instance, info, success) |
1210 | cd42d0ad | Guido Trotter | except errors.HypervisorError, err:
|
1211 | 2cc6781a | Iustin Pop | _Fail("Failed to finalize migration: %s", err, exc=True) |
1212 | 6906a9d8 | Guido Trotter | |
1213 | 6906a9d8 | Guido Trotter | |
1214 | 2a10865c | Iustin Pop | def MigrateInstance(instance, target, live): |
1215 | 2a10865c | Iustin Pop | """Migrates an instance to another node.
|
1216 | 2a10865c | Iustin Pop |
|
1217 | b1206984 | Iustin Pop | @type instance: L{objects.Instance}
|
1218 | 9f0e6b37 | Iustin Pop | @param instance: the instance definition
|
1219 | 9f0e6b37 | Iustin Pop | @type target: string
|
1220 | 9f0e6b37 | Iustin Pop | @param target: the target node name
|
1221 | 9f0e6b37 | Iustin Pop | @type live: boolean
|
1222 | 9f0e6b37 | Iustin Pop | @param live: whether the migration should be done live or not (the
|
1223 | 9f0e6b37 | Iustin Pop | interpretation of this parameter is left to the hypervisor)
|
1224 | 9f0e6b37 | Iustin Pop | @rtype: tuple
|
1225 | 9f0e6b37 | Iustin Pop | @return: a tuple of (success, msg) where:
|
1226 | 9f0e6b37 | Iustin Pop | - succes is a boolean denoting the success/failure of the operation
|
1227 | 9f0e6b37 | Iustin Pop | - msg is a string with details in case of failure
|
1228 | 9f0e6b37 | Iustin Pop |
|
1229 | 2a10865c | Iustin Pop | """
|
1230 | 53c776b5 | Iustin Pop | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
1231 | 2a10865c | Iustin Pop | |
1232 | 2a10865c | Iustin Pop | try:
|
1233 | 58d38b02 | Iustin Pop | hyper.MigrateInstance(instance, target, live) |
1234 | 2a10865c | Iustin Pop | except errors.HypervisorError, err:
|
1235 | 2cc6781a | Iustin Pop | _Fail("Failed to migrate instance: %s", err, exc=True) |
1236 | 2a10865c | Iustin Pop | |
1237 | 2a10865c | Iustin Pop | |
1238 | 821d1bd1 | Iustin Pop | def BlockdevCreate(disk, size, owner, on_primary, info): |
1239 | a8083063 | Iustin Pop | """Creates a block device for an instance.
|
1240 | a8083063 | Iustin Pop |
|
1241 | b1206984 | Iustin Pop | @type disk: L{objects.Disk}
|
1242 | b1206984 | Iustin Pop | @param disk: the object describing the disk we should create
|
1243 | b1206984 | Iustin Pop | @type size: int
|
1244 | b1206984 | Iustin Pop | @param size: the size of the physical underlying device, in MiB
|
1245 | b1206984 | Iustin Pop | @type owner: str
|
1246 | b1206984 | Iustin Pop | @param owner: the name of the instance for which disk is created,
|
1247 | b1206984 | Iustin Pop | used for device cache data
|
1248 | b1206984 | Iustin Pop | @type on_primary: boolean
|
1249 | b1206984 | Iustin Pop | @param on_primary: indicates if it is the primary node or not
|
1250 | b1206984 | Iustin Pop | @type info: string
|
1251 | b1206984 | Iustin Pop | @param info: string that will be sent to the physical device
|
1252 | b1206984 | Iustin Pop | creation, used for example to set (LVM) tags on LVs
|
1253 | b1206984 | Iustin Pop |
|
1254 | b1206984 | Iustin Pop | @return: the new unique_id of the device (this can sometime be
|
1255 | b1206984 | Iustin Pop | computed only after creation), or None. On secondary nodes,
|
1256 | b1206984 | Iustin Pop | it's not required to return anything.
|
1257 | a8083063 | Iustin Pop |
|
1258 | a8083063 | Iustin Pop | """
|
1259 | 7260cfbe | Iustin Pop | # TODO: remove the obsolete 'size' argument
|
1260 | 7260cfbe | Iustin Pop | # pylint: disable-msg=W0613
|
1261 | a8083063 | Iustin Pop | clist = [] |
1262 | a8083063 | Iustin Pop | if disk.children:
|
1263 | a8083063 | Iustin Pop | for child in disk.children: |
1264 | 1063abd1 | Iustin Pop | try:
|
1265 | 1063abd1 | Iustin Pop | crdev = _RecursiveAssembleBD(child, owner, on_primary) |
1266 | 1063abd1 | Iustin Pop | except errors.BlockDeviceError, err:
|
1267 | 2cc6781a | Iustin Pop | _Fail("Can't assemble device %s: %s", child, err)
|
1268 | a8083063 | Iustin Pop | if on_primary or disk.AssembleOnSecondary(): |
1269 | a8083063 | Iustin Pop | # we need the children open in case the device itself has to
|
1270 | a8083063 | Iustin Pop | # be assembled
|
1271 | 1063abd1 | Iustin Pop | try:
|
1272 | fe267188 | Iustin Pop | # pylint: disable-msg=E1103
|
1273 | 1063abd1 | Iustin Pop | crdev.Open() |
1274 | 1063abd1 | Iustin Pop | except errors.BlockDeviceError, err:
|
1275 | 2cc6781a | Iustin Pop | _Fail("Can't make child '%s' read-write: %s", child, err)
|
1276 | a8083063 | Iustin Pop | clist.append(crdev) |
1277 | a8083063 | Iustin Pop | |
1278 | dab69e97 | Iustin Pop | try:
|
1279 | 464f8daf | Iustin Pop | device = bdev.Create(disk.dev_type, disk.physical_id, clist, disk.size) |
1280 | 1063abd1 | Iustin Pop | except errors.BlockDeviceError, err:
|
1281 | 2cc6781a | Iustin Pop | _Fail("Can't create block device: %s", err)
|
1282 | 6c626518 | Iustin Pop | |
1283 | a8083063 | Iustin Pop | if on_primary or disk.AssembleOnSecondary(): |
1284 | 1063abd1 | Iustin Pop | try:
|
1285 | 1063abd1 | Iustin Pop | device.Assemble() |
1286 | 1063abd1 | Iustin Pop | except errors.BlockDeviceError, err:
|
1287 | 2cc6781a | Iustin Pop | _Fail("Can't assemble device after creation, unusual event: %s", err)
|
1288 | e31c43f7 | Michael Hanselmann | device.SetSyncSpeed(constants.SYNC_SPEED) |
1289 | a8083063 | Iustin Pop | if on_primary or disk.OpenOnSecondary(): |
1290 | 1063abd1 | Iustin Pop | try:
|
1291 | 1063abd1 | Iustin Pop | device.Open(force=True)
|
1292 | 1063abd1 | Iustin Pop | except errors.BlockDeviceError, err:
|
1293 | 2cc6781a | Iustin Pop | _Fail("Can't make device r/w after creation, unusual event: %s", err)
|
1294 | 3f78eef2 | Iustin Pop | DevCacheManager.UpdateCache(device.dev_path, owner, |
1295 | 3f78eef2 | Iustin Pop | on_primary, disk.iv_name) |
1296 | a0c3fea1 | Michael Hanselmann | |
1297 | a0c3fea1 | Michael Hanselmann | device.SetInfo(info) |
1298 | a0c3fea1 | Michael Hanselmann | |
1299 | c26a6bd2 | Iustin Pop | return device.unique_id
|
1300 | a8083063 | Iustin Pop | |
1301 | a8083063 | Iustin Pop | |
1302 | 821d1bd1 | Iustin Pop | def BlockdevRemove(disk): |
1303 | a8083063 | Iustin Pop | """Remove a block device.
|
1304 | a8083063 | Iustin Pop |
|
1305 | 10c2650b | Iustin Pop | @note: This is intended to be called recursively.
|
1306 | 10c2650b | Iustin Pop |
|
1307 | c41eea6e | Iustin Pop | @type disk: L{objects.Disk}
|
1308 | 10c2650b | Iustin Pop | @param disk: the disk object we should remove
|
1309 | 10c2650b | Iustin Pop | @rtype: boolean
|
1310 | 10c2650b | Iustin Pop | @return: the success of the operation
|
1311 | a8083063 | Iustin Pop |
|
1312 | a8083063 | Iustin Pop | """
|
1313 | e1bc0878 | Iustin Pop | msgs = [] |
1314 | a8083063 | Iustin Pop | try:
|
1315 | bca2e7f4 | Iustin Pop | rdev = _RecursiveFindBD(disk) |
1316 | a8083063 | Iustin Pop | except errors.BlockDeviceError, err:
|
1317 | a8083063 | Iustin Pop | # probably can't attach
|
1318 | 18682bca | Iustin Pop | logging.info("Can't attach to device %s in remove", disk)
|
1319 | a8083063 | Iustin Pop | rdev = None
|
1320 | a8083063 | Iustin Pop | if rdev is not None: |
1321 | 3f78eef2 | Iustin Pop | r_path = rdev.dev_path |
1322 | e1bc0878 | Iustin Pop | try:
|
1323 | 0c6c04ec | Iustin Pop | rdev.Remove() |
1324 | e1bc0878 | Iustin Pop | except errors.BlockDeviceError, err:
|
1325 | e1bc0878 | Iustin Pop | msgs.append(str(err))
|
1326 | c26a6bd2 | Iustin Pop | if not msgs: |
1327 | 3f78eef2 | Iustin Pop | DevCacheManager.RemoveCache(r_path) |
1328 | e1bc0878 | Iustin Pop | |
1329 | a8083063 | Iustin Pop | if disk.children:
|
1330 | a8083063 | Iustin Pop | for child in disk.children: |
1331 | c26a6bd2 | Iustin Pop | try:
|
1332 | c26a6bd2 | Iustin Pop | BlockdevRemove(child) |
1333 | c26a6bd2 | Iustin Pop | except RPCFail, err:
|
1334 | c26a6bd2 | Iustin Pop | msgs.append(str(err))
|
1335 | e1bc0878 | Iustin Pop | |
1336 | c26a6bd2 | Iustin Pop | if msgs:
|
1337 | afdc3985 | Iustin Pop | _Fail("; ".join(msgs))
|
1338 | afdc3985 | Iustin Pop | |
1339 | a8083063 | Iustin Pop | |
1340 | 3f78eef2 | Iustin Pop | def _RecursiveAssembleBD(disk, owner, as_primary): |
1341 | a8083063 | Iustin Pop | """Activate a block device for an instance.
|
1342 | a8083063 | Iustin Pop |
|
1343 | a8083063 | Iustin Pop | This is run on the primary and secondary nodes for an instance.
|
1344 | a8083063 | Iustin Pop |
|
1345 | 10c2650b | Iustin Pop | @note: this function is called recursively.
|
1346 | a8083063 | Iustin Pop |
|
1347 | 10c2650b | Iustin Pop | @type disk: L{objects.Disk}
|
1348 | 10c2650b | Iustin Pop | @param disk: the disk we try to assemble
|
1349 | 10c2650b | Iustin Pop | @type owner: str
|
1350 | 10c2650b | Iustin Pop | @param owner: the name of the instance which owns the disk
|
1351 | 10c2650b | Iustin Pop | @type as_primary: boolean
|
1352 | 10c2650b | Iustin Pop | @param as_primary: if we should make the block device
|
1353 | 10c2650b | Iustin Pop | read/write
|
1354 | a8083063 | Iustin Pop |
|
1355 | 10c2650b | Iustin Pop | @return: the assembled device or None (in case no device
|
1356 | 10c2650b | Iustin Pop | was assembled)
|
1357 | 10c2650b | Iustin Pop | @raise errors.BlockDeviceError: in case there is an error
|
1358 | 10c2650b | Iustin Pop | during the activation of the children or the device
|
1359 | 10c2650b | Iustin Pop | itself
|
1360 | a8083063 | Iustin Pop |
|
1361 | a8083063 | Iustin Pop | """
|
1362 | a8083063 | Iustin Pop | children = [] |
1363 | a8083063 | Iustin Pop | if disk.children:
|
1364 | fc1dc9d7 | Iustin Pop | mcn = disk.ChildrenNeeded() |
1365 | fc1dc9d7 | Iustin Pop | if mcn == -1: |
1366 | fc1dc9d7 | Iustin Pop | mcn = 0 # max number of Nones allowed |
1367 | fc1dc9d7 | Iustin Pop | else:
|
1368 | fc1dc9d7 | Iustin Pop | mcn = len(disk.children) - mcn # max number of Nones |
1369 | a8083063 | Iustin Pop | for chld_disk in disk.children: |
1370 | fc1dc9d7 | Iustin Pop | try:
|
1371 | fc1dc9d7 | Iustin Pop | cdev = _RecursiveAssembleBD(chld_disk, owner, as_primary) |
1372 | fc1dc9d7 | Iustin Pop | except errors.BlockDeviceError, err:
|
1373 | 7803d4d3 | Iustin Pop | if children.count(None) >= mcn: |
1374 | fc1dc9d7 | Iustin Pop | raise
|
1375 | fc1dc9d7 | Iustin Pop | cdev = None
|
1376 | 1063abd1 | Iustin Pop | logging.error("Error in child activation (but continuing): %s",
|
1377 | 1063abd1 | Iustin Pop | str(err))
|
1378 | fc1dc9d7 | Iustin Pop | children.append(cdev) |
1379 | a8083063 | Iustin Pop | |
1380 | a8083063 | Iustin Pop | if as_primary or disk.AssembleOnSecondary(): |
1381 | 464f8daf | Iustin Pop | r_dev = bdev.Assemble(disk.dev_type, disk.physical_id, children, disk.size) |
1382 | e31c43f7 | Michael Hanselmann | r_dev.SetSyncSpeed(constants.SYNC_SPEED) |
1383 | a8083063 | Iustin Pop | result = r_dev |
1384 | a8083063 | Iustin Pop | if as_primary or disk.OpenOnSecondary(): |
1385 | a8083063 | Iustin Pop | r_dev.Open() |
1386 | 3f78eef2 | Iustin Pop | DevCacheManager.UpdateCache(r_dev.dev_path, owner, |
1387 | 3f78eef2 | Iustin Pop | as_primary, disk.iv_name) |
1388 | 3f78eef2 | Iustin Pop | |
1389 | a8083063 | Iustin Pop | else:
|
1390 | a8083063 | Iustin Pop | result = True
|
1391 | a8083063 | Iustin Pop | return result
|
1392 | a8083063 | Iustin Pop | |
1393 | a8083063 | Iustin Pop | |
1394 | 821d1bd1 | Iustin Pop | def BlockdevAssemble(disk, owner, as_primary): |
1395 | a8083063 | Iustin Pop | """Activate a block device for an instance.
|
1396 | a8083063 | Iustin Pop |
|
1397 | a8083063 | Iustin Pop | This is a wrapper over _RecursiveAssembleBD.
|
1398 | a8083063 | Iustin Pop |
|
1399 | b1206984 | Iustin Pop | @rtype: str or boolean
|
1400 | b1206984 | Iustin Pop | @return: a C{/dev/...} path for primary nodes, and
|
1401 | b1206984 | Iustin Pop | C{True} for secondary nodes
|
1402 | a8083063 | Iustin Pop |
|
1403 | a8083063 | Iustin Pop | """
|
1404 | 53c14ef1 | Iustin Pop | try:
|
1405 | 53c14ef1 | Iustin Pop | result = _RecursiveAssembleBD(disk, owner, as_primary) |
1406 | 53c14ef1 | Iustin Pop | if isinstance(result, bdev.BlockDev): |
1407 | fe267188 | Iustin Pop | # pylint: disable-msg=E1103
|
1408 | 53c14ef1 | Iustin Pop | result = result.dev_path |
1409 | 53c14ef1 | Iustin Pop | except errors.BlockDeviceError, err:
|
1410 | afdc3985 | Iustin Pop | _Fail("Error while assembling disk: %s", err, exc=True) |
1411 | afdc3985 | Iustin Pop | |
1412 | c26a6bd2 | Iustin Pop | return result
|
1413 | a8083063 | Iustin Pop | |
1414 | a8083063 | Iustin Pop | |
1415 | 821d1bd1 | Iustin Pop | def BlockdevShutdown(disk): |
1416 | a8083063 | Iustin Pop | """Shut down a block device.
|
1417 | a8083063 | Iustin Pop |
|
1418 | 5bbd3f7f | Michael Hanselmann | First, if the device is assembled (Attach() is successful), then
|
1419 | c41eea6e | Iustin Pop | the device is shutdown. Then the children of the device are
|
1420 | c41eea6e | Iustin Pop | shutdown.
|
1421 | a8083063 | Iustin Pop |
|
1422 | a8083063 | Iustin Pop | This function is called recursively. Note that we don't cache the
|
1423 | a8083063 | Iustin Pop | children or such, as oppossed to assemble, shutdown of different
|
1424 | a8083063 | Iustin Pop | devices doesn't require that the upper device was active.
|
1425 | a8083063 | Iustin Pop |
|
1426 | 10c2650b | Iustin Pop | @type disk: L{objects.Disk}
|
1427 | 10c2650b | Iustin Pop | @param disk: the description of the disk we should
|
1428 | 10c2650b | Iustin Pop | shutdown
|
1429 | c26a6bd2 | Iustin Pop | @rtype: None
|
1430 | 10c2650b | Iustin Pop |
|
1431 | a8083063 | Iustin Pop | """
|
1432 | cacfd1fd | Iustin Pop | msgs = [] |
1433 | a8083063 | Iustin Pop | r_dev = _RecursiveFindBD(disk) |
1434 | a8083063 | Iustin Pop | if r_dev is not None: |
1435 | 3f78eef2 | Iustin Pop | r_path = r_dev.dev_path |
1436 | cacfd1fd | Iustin Pop | try:
|
1437 | 746f7476 | Iustin Pop | r_dev.Shutdown() |
1438 | 746f7476 | Iustin Pop | DevCacheManager.RemoveCache(r_path) |
1439 | cacfd1fd | Iustin Pop | except errors.BlockDeviceError, err:
|
1440 | cacfd1fd | Iustin Pop | msgs.append(str(err))
|
1441 | 746f7476 | Iustin Pop | |
1442 | a8083063 | Iustin Pop | if disk.children:
|
1443 | a8083063 | Iustin Pop | for child in disk.children: |
1444 | c26a6bd2 | Iustin Pop | try:
|
1445 | c26a6bd2 | Iustin Pop | BlockdevShutdown(child) |
1446 | c26a6bd2 | Iustin Pop | except RPCFail, err:
|
1447 | c26a6bd2 | Iustin Pop | msgs.append(str(err))
|
1448 | 746f7476 | Iustin Pop | |
1449 | c26a6bd2 | Iustin Pop | if msgs:
|
1450 | afdc3985 | Iustin Pop | _Fail("; ".join(msgs))
|
1451 | a8083063 | Iustin Pop | |
1452 | a8083063 | Iustin Pop | |
1453 | 821d1bd1 | Iustin Pop | def BlockdevAddchildren(parent_cdev, new_cdevs): |
1454 | 153d9724 | Iustin Pop | """Extend a mirrored block device.
|
1455 | a8083063 | Iustin Pop |
|
1456 | 10c2650b | Iustin Pop | @type parent_cdev: L{objects.Disk}
|
1457 | 10c2650b | Iustin Pop | @param parent_cdev: the disk to which we should add children
|
1458 | 10c2650b | Iustin Pop | @type new_cdevs: list of L{objects.Disk}
|
1459 | 10c2650b | Iustin Pop | @param new_cdevs: the list of children which we should add
|
1460 | c26a6bd2 | Iustin Pop | @rtype: None
|
1461 | 10c2650b | Iustin Pop |
|
1462 | a8083063 | Iustin Pop | """
|
1463 | bca2e7f4 | Iustin Pop | parent_bdev = _RecursiveFindBD(parent_cdev) |
1464 | 153d9724 | Iustin Pop | if parent_bdev is None: |
1465 | 2cc6781a | Iustin Pop | _Fail("Can't find parent device '%s' in add children", parent_cdev)
|
1466 | 153d9724 | Iustin Pop | new_bdevs = [_RecursiveFindBD(disk) for disk in new_cdevs] |
1467 | 153d9724 | Iustin Pop | if new_bdevs.count(None) > 0: |
1468 | 2cc6781a | Iustin Pop | _Fail("Can't find new device(s) to add: %s:%s", new_bdevs, new_cdevs)
|
1469 | 153d9724 | Iustin Pop | parent_bdev.AddChildren(new_bdevs) |
1470 | a8083063 | Iustin Pop | |
1471 | a8083063 | Iustin Pop | |
1472 | 821d1bd1 | Iustin Pop | def BlockdevRemovechildren(parent_cdev, new_cdevs): |
1473 | 153d9724 | Iustin Pop | """Shrink a mirrored block device.
|
1474 | a8083063 | Iustin Pop |
|
1475 | 10c2650b | Iustin Pop | @type parent_cdev: L{objects.Disk}
|
1476 | 10c2650b | Iustin Pop | @param parent_cdev: the disk from which we should remove children
|
1477 | 10c2650b | Iustin Pop | @type new_cdevs: list of L{objects.Disk}
|
1478 | 10c2650b | Iustin Pop | @param new_cdevs: the list of children which we should remove
|
1479 | c26a6bd2 | Iustin Pop | @rtype: None
|
1480 | 10c2650b | Iustin Pop |
|
1481 | a8083063 | Iustin Pop | """
|
1482 | 153d9724 | Iustin Pop | parent_bdev = _RecursiveFindBD(parent_cdev) |
1483 | 153d9724 | Iustin Pop | if parent_bdev is None: |
1484 | 2cc6781a | Iustin Pop | _Fail("Can't find parent device '%s' in remove children", parent_cdev)
|
1485 | e739bd57 | Iustin Pop | devs = [] |
1486 | e739bd57 | Iustin Pop | for disk in new_cdevs: |
1487 | e739bd57 | Iustin Pop | rpath = disk.StaticDevPath() |
1488 | e739bd57 | Iustin Pop | if rpath is None: |
1489 | e739bd57 | Iustin Pop | bd = _RecursiveFindBD(disk) |
1490 | e739bd57 | Iustin Pop | if bd is None: |
1491 | 2cc6781a | Iustin Pop | _Fail("Can't find device %s while removing children", disk)
|
1492 | e739bd57 | Iustin Pop | else:
|
1493 | e739bd57 | Iustin Pop | devs.append(bd.dev_path) |
1494 | e739bd57 | Iustin Pop | else:
|
1495 | e51db2a6 | Iustin Pop | if not utils.IsNormAbsPath(rpath): |
1496 | e51db2a6 | Iustin Pop | _Fail("Strange path returned from StaticDevPath: '%s'", rpath)
|
1497 | e739bd57 | Iustin Pop | devs.append(rpath) |
1498 | e739bd57 | Iustin Pop | parent_bdev.RemoveChildren(devs) |
1499 | a8083063 | Iustin Pop | |
1500 | a8083063 | Iustin Pop | |
1501 | 821d1bd1 | Iustin Pop | def BlockdevGetmirrorstatus(disks): |
1502 | a8083063 | Iustin Pop | """Get the mirroring status of a list of devices.
|
1503 | a8083063 | Iustin Pop |
|
1504 | 10c2650b | Iustin Pop | @type disks: list of L{objects.Disk}
|
1505 | 10c2650b | Iustin Pop | @param disks: the list of disks which we should query
|
1506 | 10c2650b | Iustin Pop | @rtype: disk
|
1507 | 10c2650b | Iustin Pop | @return:
|
1508 | 10c2650b | Iustin Pop | a list of (mirror_done, estimated_time) tuples, which
|
1509 | c41eea6e | Iustin Pop | are the result of L{bdev.BlockDev.CombinedSyncStatus}
|
1510 | 10c2650b | Iustin Pop | @raise errors.BlockDeviceError: if any of the disks cannot be
|
1511 | 10c2650b | Iustin Pop | found
|
1512 | a8083063 | Iustin Pop |
|
1513 | a8083063 | Iustin Pop | """
|
1514 | a8083063 | Iustin Pop | stats = [] |
1515 | a8083063 | Iustin Pop | for dsk in disks: |
1516 | a8083063 | Iustin Pop | rbd = _RecursiveFindBD(dsk) |
1517 | a8083063 | Iustin Pop | if rbd is None: |
1518 | 3efa9051 | Iustin Pop | _Fail("Can't find device %s", dsk)
|
1519 | 96acbc09 | Michael Hanselmann | |
1520 | 36145b12 | Michael Hanselmann | stats.append(rbd.CombinedSyncStatus()) |
1521 | 96acbc09 | Michael Hanselmann | |
1522 | c26a6bd2 | Iustin Pop | return stats
|
1523 | a8083063 | Iustin Pop | |
1524 | a8083063 | Iustin Pop | |
1525 | bca2e7f4 | Iustin Pop | def _RecursiveFindBD(disk): |
1526 | a8083063 | Iustin Pop | """Check if a device is activated.
|
1527 | a8083063 | Iustin Pop |
|
1528 | 5bbd3f7f | Michael Hanselmann | If so, return information about the real device.
|
1529 | a8083063 | Iustin Pop |
|
1530 | 10c2650b | Iustin Pop | @type disk: L{objects.Disk}
|
1531 | 10c2650b | Iustin Pop | @param disk: the disk object we need to find
|
1532 | a8083063 | Iustin Pop |
|
1533 | 10c2650b | Iustin Pop | @return: None if the device can't be found,
|
1534 | 10c2650b | Iustin Pop | otherwise the device instance
|
1535 | a8083063 | Iustin Pop |
|
1536 | a8083063 | Iustin Pop | """
|
1537 | a8083063 | Iustin Pop | children = [] |
1538 | a8083063 | Iustin Pop | if disk.children:
|
1539 | a8083063 | Iustin Pop | for chdisk in disk.children: |
1540 | a8083063 | Iustin Pop | children.append(_RecursiveFindBD(chdisk)) |
1541 | a8083063 | Iustin Pop | |
1542 | 464f8daf | Iustin Pop | return bdev.FindDevice(disk.dev_type, disk.physical_id, children, disk.size)
|
1543 | a8083063 | Iustin Pop | |
1544 | a8083063 | Iustin Pop | |
1545 | f2e07bb4 | Michael Hanselmann | def _OpenRealBD(disk): |
1546 | f2e07bb4 | Michael Hanselmann | """Opens the underlying block device of a disk.
|
1547 | f2e07bb4 | Michael Hanselmann |
|
1548 | f2e07bb4 | Michael Hanselmann | @type disk: L{objects.Disk}
|
1549 | f2e07bb4 | Michael Hanselmann | @param disk: the disk object we want to open
|
1550 | f2e07bb4 | Michael Hanselmann |
|
1551 | f2e07bb4 | Michael Hanselmann | """
|
1552 | f2e07bb4 | Michael Hanselmann | real_disk = _RecursiveFindBD(disk) |
1553 | f2e07bb4 | Michael Hanselmann | if real_disk is None: |
1554 | f2e07bb4 | Michael Hanselmann | _Fail("Block device '%s' is not set up", disk)
|
1555 | f2e07bb4 | Michael Hanselmann | |
1556 | f2e07bb4 | Michael Hanselmann | real_disk.Open() |
1557 | f2e07bb4 | Michael Hanselmann | |
1558 | f2e07bb4 | Michael Hanselmann | return real_disk
|
1559 | f2e07bb4 | Michael Hanselmann | |
1560 | f2e07bb4 | Michael Hanselmann | |
1561 | 821d1bd1 | Iustin Pop | def BlockdevFind(disk): |
1562 | a8083063 | Iustin Pop | """Check if a device is activated.
|
1563 | a8083063 | Iustin Pop |
|
1564 | 5bbd3f7f | Michael Hanselmann | If it is, return information about the real device.
|
1565 | a8083063 | Iustin Pop |
|
1566 | 10c2650b | Iustin Pop | @type disk: L{objects.Disk}
|
1567 | 10c2650b | Iustin Pop | @param disk: the disk to find
|
1568 | 96acbc09 | Michael Hanselmann | @rtype: None or objects.BlockDevStatus
|
1569 | 96acbc09 | Michael Hanselmann | @return: None if the disk cannot be found, otherwise a the current
|
1570 | 96acbc09 | Michael Hanselmann | information
|
1571 | a8083063 | Iustin Pop |
|
1572 | a8083063 | Iustin Pop | """
|
1573 | 23829f6f | Iustin Pop | try:
|
1574 | 23829f6f | Iustin Pop | rbd = _RecursiveFindBD(disk) |
1575 | 23829f6f | Iustin Pop | except errors.BlockDeviceError, err:
|
1576 | 2cc6781a | Iustin Pop | _Fail("Failed to find device: %s", err, exc=True) |
1577 | 96acbc09 | Michael Hanselmann | |
1578 | a8083063 | Iustin Pop | if rbd is None: |
1579 | c26a6bd2 | Iustin Pop | return None |
1580 | 96acbc09 | Michael Hanselmann | |
1581 | 96acbc09 | Michael Hanselmann | return rbd.GetSyncStatus()
|
1582 | a8083063 | Iustin Pop | |
1583 | a8083063 | Iustin Pop | |
1584 | 968a7623 | Iustin Pop | def BlockdevGetsize(disks): |
1585 | 968a7623 | Iustin Pop | """Computes the size of the given disks.
|
1586 | 968a7623 | Iustin Pop |
|
1587 | 968a7623 | Iustin Pop | If a disk is not found, returns None instead.
|
1588 | 968a7623 | Iustin Pop |
|
1589 | 968a7623 | Iustin Pop | @type disks: list of L{objects.Disk}
|
1590 | 968a7623 | Iustin Pop | @param disks: the list of disk to compute the size for
|
1591 | 968a7623 | Iustin Pop | @rtype: list
|
1592 | 968a7623 | Iustin Pop | @return: list with elements None if the disk cannot be found,
|
1593 | 968a7623 | Iustin Pop | otherwise the size
|
1594 | 968a7623 | Iustin Pop |
|
1595 | 968a7623 | Iustin Pop | """
|
1596 | 968a7623 | Iustin Pop | result = [] |
1597 | 968a7623 | Iustin Pop | for cf in disks: |
1598 | 968a7623 | Iustin Pop | try:
|
1599 | 968a7623 | Iustin Pop | rbd = _RecursiveFindBD(cf) |
1600 | 1122eb25 | Iustin Pop | except errors.BlockDeviceError:
|
1601 | 968a7623 | Iustin Pop | result.append(None)
|
1602 | 968a7623 | Iustin Pop | continue
|
1603 | 968a7623 | Iustin Pop | if rbd is None: |
1604 | 968a7623 | Iustin Pop | result.append(None)
|
1605 | 968a7623 | Iustin Pop | else:
|
1606 | 968a7623 | Iustin Pop | result.append(rbd.GetActualSize()) |
1607 | 968a7623 | Iustin Pop | return result
|
1608 | 968a7623 | Iustin Pop | |
1609 | 968a7623 | Iustin Pop | |
1610 | 858f3d18 | Iustin Pop | def BlockdevExport(disk, dest_node, dest_path, cluster_name): |
1611 | 858f3d18 | Iustin Pop | """Export a block device to a remote node.
|
1612 | 858f3d18 | Iustin Pop |
|
1613 | 858f3d18 | Iustin Pop | @type disk: L{objects.Disk}
|
1614 | 858f3d18 | Iustin Pop | @param disk: the description of the disk to export
|
1615 | 858f3d18 | Iustin Pop | @type dest_node: str
|
1616 | 858f3d18 | Iustin Pop | @param dest_node: the destination node to export to
|
1617 | 858f3d18 | Iustin Pop | @type dest_path: str
|
1618 | 858f3d18 | Iustin Pop | @param dest_path: the destination path on the target node
|
1619 | 858f3d18 | Iustin Pop | @type cluster_name: str
|
1620 | 858f3d18 | Iustin Pop | @param cluster_name: the cluster name, needed for SSH hostalias
|
1621 | 858f3d18 | Iustin Pop | @rtype: None
|
1622 | 858f3d18 | Iustin Pop |
|
1623 | 858f3d18 | Iustin Pop | """
|
1624 | f2e07bb4 | Michael Hanselmann | real_disk = _OpenRealBD(disk) |
1625 | 858f3d18 | Iustin Pop | |
1626 | 858f3d18 | Iustin Pop | # the block size on the read dd is 1MiB to match our units
|
1627 | 858f3d18 | Iustin Pop | expcmd = utils.BuildShellCmd("set -e; set -o pipefail; "
|
1628 | 858f3d18 | Iustin Pop | "dd if=%s bs=1048576 count=%s",
|
1629 | 858f3d18 | Iustin Pop | real_disk.dev_path, str(disk.size))
|
1630 | 858f3d18 | Iustin Pop | |
1631 | 858f3d18 | Iustin Pop | # we set here a smaller block size as, due to ssh buffering, more
|
1632 | 858f3d18 | Iustin Pop | # than 64-128k will mostly ignored; we use nocreat to fail if the
|
1633 | 858f3d18 | Iustin Pop | # device is not already there or we pass a wrong path; we use
|
1634 | 858f3d18 | Iustin Pop | # notrunc to no attempt truncate on an LV device; we use oflag=dsync
|
1635 | 858f3d18 | Iustin Pop | # to not buffer too much memory; this means that at best, we flush
|
1636 | 858f3d18 | Iustin Pop | # every 64k, which will not be very fast
|
1637 | 858f3d18 | Iustin Pop | destcmd = utils.BuildShellCmd("dd of=%s conv=nocreat,notrunc bs=65536"
|
1638 | 858f3d18 | Iustin Pop | " oflag=dsync", dest_path)
|
1639 | 858f3d18 | Iustin Pop | |
1640 | 858f3d18 | Iustin Pop | remotecmd = _GetSshRunner(cluster_name).BuildCmd(dest_node, |
1641 | 858f3d18 | Iustin Pop | constants.GANETI_RUNAS, |
1642 | 858f3d18 | Iustin Pop | destcmd) |
1643 | 858f3d18 | Iustin Pop | |
1644 | 858f3d18 | Iustin Pop | # all commands have been checked, so we're safe to combine them
|
1645 | 858f3d18 | Iustin Pop | command = '|'.join([expcmd, utils.ShellQuoteArgs(remotecmd)])
|
1646 | 858f3d18 | Iustin Pop | |
1647 | 858f3d18 | Iustin Pop | result = utils.RunCmd(["bash", "-c", command]) |
1648 | 858f3d18 | Iustin Pop | |
1649 | 858f3d18 | Iustin Pop | if result.failed:
|
1650 | 858f3d18 | Iustin Pop | _Fail("Disk copy command '%s' returned error: %s"
|
1651 | 858f3d18 | Iustin Pop | " output: %s", command, result.fail_reason, result.output)
|
1652 | 858f3d18 | Iustin Pop | |
1653 | 858f3d18 | Iustin Pop | |
1654 | a8083063 | Iustin Pop | def UploadFile(file_name, data, mode, uid, gid, atime, mtime): |
1655 | a8083063 | Iustin Pop | """Write a file to the filesystem.
|
1656 | a8083063 | Iustin Pop |
|
1657 | a8083063 | Iustin Pop | This allows the master to overwrite(!) a file. It will only perform
|
1658 | a8083063 | Iustin Pop | the operation if the file belongs to a list of configuration files.
|
1659 | a8083063 | Iustin Pop |
|
1660 | 10c2650b | Iustin Pop | @type file_name: str
|
1661 | 10c2650b | Iustin Pop | @param file_name: the target file name
|
1662 | 10c2650b | Iustin Pop | @type data: str
|
1663 | 10c2650b | Iustin Pop | @param data: the new contents of the file
|
1664 | 10c2650b | Iustin Pop | @type mode: int
|
1665 | 10c2650b | Iustin Pop | @param mode: the mode to give the file (can be None)
|
1666 | 10c2650b | Iustin Pop | @type uid: int
|
1667 | 10c2650b | Iustin Pop | @param uid: the owner of the file (can be -1 for default)
|
1668 | 10c2650b | Iustin Pop | @type gid: int
|
1669 | 10c2650b | Iustin Pop | @param gid: the group of the file (can be -1 for default)
|
1670 | 10c2650b | Iustin Pop | @type atime: float
|
1671 | 10c2650b | Iustin Pop | @param atime: the atime to set on the file (can be None)
|
1672 | 10c2650b | Iustin Pop | @type mtime: float
|
1673 | 10c2650b | Iustin Pop | @param mtime: the mtime to set on the file (can be None)
|
1674 | c26a6bd2 | Iustin Pop | @rtype: None
|
1675 | 10c2650b | Iustin Pop |
|
1676 | a8083063 | Iustin Pop | """
|
1677 | a8083063 | Iustin Pop | if not os.path.isabs(file_name): |
1678 | 2cc6781a | Iustin Pop | _Fail("Filename passed to UploadFile is not absolute: '%s'", file_name)
|
1679 | a8083063 | Iustin Pop | |
1680 | 360b0dc2 | Iustin Pop | if file_name not in _ALLOWED_UPLOAD_FILES: |
1681 | 2cc6781a | Iustin Pop | _Fail("Filename passed to UploadFile not in allowed upload targets: '%s'",
|
1682 | 2cc6781a | Iustin Pop | file_name) |
1683 | a8083063 | Iustin Pop | |
1684 | 12bce260 | Michael Hanselmann | raw_data = _Decompress(data) |
1685 | 12bce260 | Michael Hanselmann | |
1686 | 12bce260 | Michael Hanselmann | utils.WriteFile(file_name, data=raw_data, mode=mode, uid=uid, gid=gid, |
1687 | 41a57aab | Michael Hanselmann | atime=atime, mtime=mtime) |
1688 | a8083063 | Iustin Pop | |
1689 | 386b57af | Iustin Pop | |
1690 | 03d1dba2 | Michael Hanselmann | def WriteSsconfFiles(values): |
1691 | 89b14f05 | Iustin Pop | """Update all ssconf files.
|
1692 | 89b14f05 | Iustin Pop |
|
1693 | 89b14f05 | Iustin Pop | Wrapper around the SimpleStore.WriteFiles.
|
1694 | 89b14f05 | Iustin Pop |
|
1695 | 89b14f05 | Iustin Pop | """
|
1696 | 89b14f05 | Iustin Pop | ssconf.SimpleStore().WriteFiles(values) |
1697 | 6ddc95ec | Michael Hanselmann | |
1698 | 6ddc95ec | Michael Hanselmann | |
1699 | a8083063 | Iustin Pop | def _ErrnoOrStr(err): |
1700 | a8083063 | Iustin Pop | """Format an EnvironmentError exception.
|
1701 | a8083063 | Iustin Pop |
|
1702 | 10c2650b | Iustin Pop | If the L{err} argument has an errno attribute, it will be looked up
|
1703 | 10c2650b | Iustin Pop | and converted into a textual C{E...} description. Otherwise the
|
1704 | 10c2650b | Iustin Pop | string representation of the error will be returned.
|
1705 | 10c2650b | Iustin Pop |
|
1706 | 10c2650b | Iustin Pop | @type err: L{EnvironmentError}
|
1707 | 10c2650b | Iustin Pop | @param err: the exception to format
|
1708 | a8083063 | Iustin Pop |
|
1709 | a8083063 | Iustin Pop | """
|
1710 | a8083063 | Iustin Pop | if hasattr(err, 'errno'): |
1711 | a8083063 | Iustin Pop | detail = errno.errorcode[err.errno] |
1712 | a8083063 | Iustin Pop | else:
|
1713 | a8083063 | Iustin Pop | detail = str(err)
|
1714 | a8083063 | Iustin Pop | return detail
|
1715 | a8083063 | Iustin Pop | |
1716 | 5d0fe286 | Iustin Pop | |
1717 | c19f9810 | Iustin Pop | def _OSOndiskAPIVersion(os_dir): |
1718 | 2f8598a5 | Alexander Schreiber | """Compute and return the API version of a given OS.
|
1719 | a8083063 | Iustin Pop |
|
1720 | c19f9810 | Iustin Pop | This function will try to read the API version of the OS residing in
|
1721 | c19f9810 | Iustin Pop | the 'os_dir' directory.
|
1722 | 7c3d51d4 | Guido Trotter |
|
1723 | 10c2650b | Iustin Pop | @type os_dir: str
|
1724 | c19f9810 | Iustin Pop | @param os_dir: the directory in which we should look for the OS
|
1725 | 8e70b181 | Iustin Pop | @rtype: tuple
|
1726 | 8e70b181 | Iustin Pop | @return: tuple (status, data) with status denoting the validity and
|
1727 | 8e70b181 | Iustin Pop | data holding either the vaid versions or an error message
|
1728 | a8083063 | Iustin Pop |
|
1729 | a8083063 | Iustin Pop | """
|
1730 | e02b9114 | Iustin Pop | api_file = utils.PathJoin(os_dir, constants.OS_API_FILE) |
1731 | a8083063 | Iustin Pop | |
1732 | a8083063 | Iustin Pop | try:
|
1733 | a8083063 | Iustin Pop | st = os.stat(api_file) |
1734 | a8083063 | Iustin Pop | except EnvironmentError, err: |
1735 | b6b45e0d | Guido Trotter | return False, ("Required file '%s' not found under path %s: %s" % |
1736 | b6b45e0d | Guido Trotter | (constants.OS_API_FILE, os_dir, _ErrnoOrStr(err))) |
1737 | a8083063 | Iustin Pop | |
1738 | a8083063 | Iustin Pop | if not stat.S_ISREG(stat.S_IFMT(st.st_mode)): |
1739 | b6b45e0d | Guido Trotter | return False, ("File '%s' in %s is not a regular file" % |
1740 | b6b45e0d | Guido Trotter | (constants.OS_API_FILE, os_dir)) |
1741 | a8083063 | Iustin Pop | |
1742 | a8083063 | Iustin Pop | try:
|
1743 | 3374afa9 | Guido Trotter | api_versions = utils.ReadFile(api_file).splitlines() |
1744 | a8083063 | Iustin Pop | except EnvironmentError, err: |
1745 | 255dcebd | Iustin Pop | return False, ("Error while reading the API version file at %s: %s" % |
1746 | 255dcebd | Iustin Pop | (api_file, _ErrnoOrStr(err))) |
1747 | a8083063 | Iustin Pop | |
1748 | a8083063 | Iustin Pop | try:
|
1749 | 63b9b186 | Guido Trotter | api_versions = [int(version.strip()) for version in api_versions] |
1750 | a8083063 | Iustin Pop | except (TypeError, ValueError), err: |
1751 | 255dcebd | Iustin Pop | return False, ("API version(s) can't be converted to integer: %s" % |
1752 | 255dcebd | Iustin Pop | str(err))
|
1753 | a8083063 | Iustin Pop | |
1754 | 255dcebd | Iustin Pop | return True, api_versions |
1755 | a8083063 | Iustin Pop | |
1756 | 386b57af | Iustin Pop | |
1757 | 7c3d51d4 | Guido Trotter | def DiagnoseOS(top_dirs=None): |
1758 | a8083063 | Iustin Pop | """Compute the validity for all OSes.
|
1759 | a8083063 | Iustin Pop |
|
1760 | 10c2650b | Iustin Pop | @type top_dirs: list
|
1761 | 10c2650b | Iustin Pop | @param top_dirs: the list of directories in which to
|
1762 | 10c2650b | Iustin Pop | search (if not given defaults to
|
1763 | 10c2650b | Iustin Pop | L{constants.OS_SEARCH_PATH})
|
1764 | 10c2650b | Iustin Pop | @rtype: list of L{objects.OS}
|
1765 | ba00557a | Guido Trotter | @return: a list of tuples (name, path, status, diagnose, variants)
|
1766 | 255dcebd | Iustin Pop | for all (potential) OSes under all search paths, where:
|
1767 | 255dcebd | Iustin Pop | - name is the (potential) OS name
|
1768 | 255dcebd | Iustin Pop | - path is the full path to the OS
|
1769 | 255dcebd | Iustin Pop | - status True/False is the validity of the OS
|
1770 | 255dcebd | Iustin Pop | - diagnose is the error message for an invalid OS, otherwise empty
|
1771 | ba00557a | Guido Trotter | - variants is a list of supported OS variants, if any
|
1772 | a8083063 | Iustin Pop |
|
1773 | a8083063 | Iustin Pop | """
|
1774 | 7c3d51d4 | Guido Trotter | if top_dirs is None: |
1775 | 7c3d51d4 | Guido Trotter | top_dirs = constants.OS_SEARCH_PATH |
1776 | a8083063 | Iustin Pop | |
1777 | a8083063 | Iustin Pop | result = [] |
1778 | 65fe4693 | Iustin Pop | for dir_name in top_dirs: |
1779 | 65fe4693 | Iustin Pop | if os.path.isdir(dir_name):
|
1780 | 7c3d51d4 | Guido Trotter | try:
|
1781 | 65fe4693 | Iustin Pop | f_names = utils.ListVisibleFiles(dir_name) |
1782 | 7c3d51d4 | Guido Trotter | except EnvironmentError, err: |
1783 | 29921401 | Iustin Pop | logging.exception("Can't list the OS directory %s: %s", dir_name, err)
|
1784 | 7c3d51d4 | Guido Trotter | break
|
1785 | 7c3d51d4 | Guido Trotter | for name in f_names: |
1786 | e02b9114 | Iustin Pop | os_path = utils.PathJoin(dir_name, name) |
1787 | 255dcebd | Iustin Pop | status, os_inst = _TryOSFromDisk(name, base_dir=dir_name) |
1788 | 255dcebd | Iustin Pop | if status:
|
1789 | 255dcebd | Iustin Pop | diagnose = ""
|
1790 | ba00557a | Guido Trotter | variants = os_inst.supported_variants |
1791 | 255dcebd | Iustin Pop | else:
|
1792 | 255dcebd | Iustin Pop | diagnose = os_inst |
1793 | ba00557a | Guido Trotter | variants = [] |
1794 | ba00557a | Guido Trotter | result.append((name, os_path, status, diagnose, variants)) |
1795 | a8083063 | Iustin Pop | |
1796 | c26a6bd2 | Iustin Pop | return result
|
1797 | a8083063 | Iustin Pop | |
1798 | a8083063 | Iustin Pop | |
1799 | 255dcebd | Iustin Pop | def _TryOSFromDisk(name, base_dir=None): |
1800 | a8083063 | Iustin Pop | """Create an OS instance from disk.
|
1801 | a8083063 | Iustin Pop |
|
1802 | a8083063 | Iustin Pop | This function will return an OS instance if the given name is a
|
1803 | 8e70b181 | Iustin Pop | valid OS name.
|
1804 | a8083063 | Iustin Pop |
|
1805 | 8ee4dc80 | Guido Trotter | @type base_dir: string
|
1806 | 8ee4dc80 | Guido Trotter | @keyword base_dir: Base directory containing OS installations.
|
1807 | 8ee4dc80 | Guido Trotter | Defaults to a search in all the OS_SEARCH_PATH dirs.
|
1808 | 255dcebd | Iustin Pop | @rtype: tuple
|
1809 | 255dcebd | Iustin Pop | @return: success and either the OS instance if we find a valid one,
|
1810 | 255dcebd | Iustin Pop | or error message
|
1811 | 7c3d51d4 | Guido Trotter |
|
1812 | a8083063 | Iustin Pop | """
|
1813 | 56bcd3f4 | Guido Trotter | if base_dir is None: |
1814 | 57c177af | Iustin Pop | os_dir = utils.FindFile(name, constants.OS_SEARCH_PATH, os.path.isdir) |
1815 | c34c0cfd | Iustin Pop | else:
|
1816 | f95c81bf | Iustin Pop | os_dir = utils.FindFile(name, [base_dir], os.path.isdir) |
1817 | f95c81bf | Iustin Pop | |
1818 | f95c81bf | Iustin Pop | if os_dir is None: |
1819 | 5c0433d6 | Iustin Pop | return False, "Directory for OS %s not found in search path" % name |
1820 | a8083063 | Iustin Pop | |
1821 | c19f9810 | Iustin Pop | status, api_versions = _OSOndiskAPIVersion(os_dir) |
1822 | 255dcebd | Iustin Pop | if not status: |
1823 | 255dcebd | Iustin Pop | # push the error up
|
1824 | 255dcebd | Iustin Pop | return status, api_versions
|
1825 | a8083063 | Iustin Pop | |
1826 | d1a7d66f | Guido Trotter | if not constants.OS_API_VERSIONS.intersection(api_versions): |
1827 | 255dcebd | Iustin Pop | return False, ("API version mismatch for path '%s': found %s, want %s." % |
1828 | d1a7d66f | Guido Trotter | (os_dir, api_versions, constants.OS_API_VERSIONS)) |
1829 | a8083063 | Iustin Pop | |
1830 | 41ba4061 | Guido Trotter | # OS Files dictionary, we will populate it with the absolute path names
|
1831 | 41ba4061 | Guido Trotter | os_files = dict.fromkeys(constants.OS_SCRIPTS)
|
1832 | a8083063 | Iustin Pop | |
1833 | 95075fba | Guido Trotter | if max(api_versions) >= constants.OS_API_V15: |
1834 | 95075fba | Guido Trotter | os_files[constants.OS_VARIANTS_FILE] = ''
|
1835 | 95075fba | Guido Trotter | |
1836 | ea79fc15 | Michael Hanselmann | for filename in os_files: |
1837 | e02b9114 | Iustin Pop | os_files[filename] = utils.PathJoin(os_dir, filename) |
1838 | a8083063 | Iustin Pop | |
1839 | a8083063 | Iustin Pop | try:
|
1840 | ea79fc15 | Michael Hanselmann | st = os.stat(os_files[filename]) |
1841 | a8083063 | Iustin Pop | except EnvironmentError, err: |
1842 | 41ba4061 | Guido Trotter | return False, ("File '%s' under path '%s' is missing (%s)" % |
1843 | ea79fc15 | Michael Hanselmann | (filename, os_dir, _ErrnoOrStr(err))) |
1844 | a8083063 | Iustin Pop | |
1845 | a8083063 | Iustin Pop | if not stat.S_ISREG(stat.S_IFMT(st.st_mode)): |
1846 | 41ba4061 | Guido Trotter | return False, ("File '%s' under path '%s' is not a regular file" % |
1847 | ea79fc15 | Michael Hanselmann | (filename, os_dir)) |
1848 | 255dcebd | Iustin Pop | |
1849 | ea79fc15 | Michael Hanselmann | if filename in constants.OS_SCRIPTS: |
1850 | 0757c107 | Guido Trotter | if stat.S_IMODE(st.st_mode) & stat.S_IXUSR != stat.S_IXUSR:
|
1851 | 0757c107 | Guido Trotter | return False, ("File '%s' under path '%s' is not executable" % |
1852 | ea79fc15 | Michael Hanselmann | (filename, os_dir)) |
1853 | 0757c107 | Guido Trotter | |
1854 | 95075fba | Guido Trotter | variants = None
|
1855 | 95075fba | Guido Trotter | if constants.OS_VARIANTS_FILE in os_files: |
1856 | 95075fba | Guido Trotter | variants_file = os_files[constants.OS_VARIANTS_FILE] |
1857 | 95075fba | Guido Trotter | try:
|
1858 | 95075fba | Guido Trotter | variants = utils.ReadFile(variants_file).splitlines() |
1859 | 95075fba | Guido Trotter | except EnvironmentError, err: |
1860 | 95075fba | Guido Trotter | return False, ("Error while reading the OS variants file at %s: %s" % |
1861 | 95075fba | Guido Trotter | (variants_file, _ErrnoOrStr(err))) |
1862 | 95075fba | Guido Trotter | if not variants: |
1863 | 95075fba | Guido Trotter | return False, ("No supported os variant found") |
1864 | 0757c107 | Guido Trotter | |
1865 | 8e70b181 | Iustin Pop | os_obj = objects.OS(name=name, path=os_dir, |
1866 | 41ba4061 | Guido Trotter | create_script=os_files[constants.OS_SCRIPT_CREATE], |
1867 | 41ba4061 | Guido Trotter | export_script=os_files[constants.OS_SCRIPT_EXPORT], |
1868 | 41ba4061 | Guido Trotter | import_script=os_files[constants.OS_SCRIPT_IMPORT], |
1869 | 41ba4061 | Guido Trotter | rename_script=os_files[constants.OS_SCRIPT_RENAME], |
1870 | 95075fba | Guido Trotter | supported_variants=variants, |
1871 | 255dcebd | Iustin Pop | api_versions=api_versions) |
1872 | 255dcebd | Iustin Pop | return True, os_obj |
1873 | 255dcebd | Iustin Pop | |
1874 | 255dcebd | Iustin Pop | |
1875 | 255dcebd | Iustin Pop | def OSFromDisk(name, base_dir=None): |
1876 | 255dcebd | Iustin Pop | """Create an OS instance from disk.
|
1877 | 255dcebd | Iustin Pop |
|
1878 | 255dcebd | Iustin Pop | This function will return an OS instance if the given name is a
|
1879 | 255dcebd | Iustin Pop | valid OS name. Otherwise, it will raise an appropriate
|
1880 | 255dcebd | Iustin Pop | L{RPCFail} exception, detailing why this is not a valid OS.
|
1881 | 255dcebd | Iustin Pop |
|
1882 | 255dcebd | Iustin Pop | This is just a wrapper over L{_TryOSFromDisk}, which doesn't raise
|
1883 | 255dcebd | Iustin Pop | an exception but returns true/false status data.
|
1884 | 255dcebd | Iustin Pop |
|
1885 | 255dcebd | Iustin Pop | @type base_dir: string
|
1886 | 255dcebd | Iustin Pop | @keyword base_dir: Base directory containing OS installations.
|
1887 | 255dcebd | Iustin Pop | Defaults to a search in all the OS_SEARCH_PATH dirs.
|
1888 | 255dcebd | Iustin Pop | @rtype: L{objects.OS}
|
1889 | 255dcebd | Iustin Pop | @return: the OS instance if we find a valid one
|
1890 | 255dcebd | Iustin Pop | @raise RPCFail: if we don't find a valid OS
|
1891 | 255dcebd | Iustin Pop |
|
1892 | 255dcebd | Iustin Pop | """
|
1893 | 69b99987 | Michael Hanselmann | name_only = name.split("+", 1)[0] |
1894 | 6ee7102a | Guido Trotter | status, payload = _TryOSFromDisk(name_only, base_dir) |
1895 | 255dcebd | Iustin Pop | |
1896 | 255dcebd | Iustin Pop | if not status: |
1897 | 255dcebd | Iustin Pop | _Fail(payload) |
1898 | a8083063 | Iustin Pop | |
1899 | 255dcebd | Iustin Pop | return payload
|
1900 | a8083063 | Iustin Pop | |
1901 | a8083063 | Iustin Pop | |
1902 | 099c52ad | Iustin Pop | def OSEnvironment(instance, inst_os, debug=0): |
1903 | 2266edb2 | Guido Trotter | """Calculate the environment for an os script.
|
1904 | 2266edb2 | Guido Trotter |
|
1905 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
1906 | 2266edb2 | Guido Trotter | @param instance: target instance for the os script run
|
1907 | 099c52ad | Iustin Pop | @type inst_os: L{objects.OS}
|
1908 | 099c52ad | Iustin Pop | @param inst_os: operating system for which the environment is being built
|
1909 | 2266edb2 | Guido Trotter | @type debug: integer
|
1910 | 10c2650b | Iustin Pop | @param debug: debug level (0 or 1, for OS Api 10)
|
1911 | 2266edb2 | Guido Trotter | @rtype: dict
|
1912 | 2266edb2 | Guido Trotter | @return: dict of environment variables
|
1913 | 10c2650b | Iustin Pop | @raise errors.BlockDeviceError: if the block device
|
1914 | 10c2650b | Iustin Pop | cannot be found
|
1915 | 2266edb2 | Guido Trotter |
|
1916 | 2266edb2 | Guido Trotter | """
|
1917 | 2266edb2 | Guido Trotter | result = {} |
1918 | 099c52ad | Iustin Pop | api_version = \ |
1919 | 099c52ad | Iustin Pop | max(constants.OS_API_VERSIONS.intersection(inst_os.api_versions))
|
1920 | d1a7d66f | Guido Trotter | result['OS_API_VERSION'] = '%d' % api_version |
1921 | 2266edb2 | Guido Trotter | result['INSTANCE_NAME'] = instance.name
|
1922 | 15552312 | Iustin Pop | result['INSTANCE_OS'] = instance.os
|
1923 | 2266edb2 | Guido Trotter | result['HYPERVISOR'] = instance.hypervisor
|
1924 | 2266edb2 | Guido Trotter | result['DISK_COUNT'] = '%d' % len(instance.disks) |
1925 | 2266edb2 | Guido Trotter | result['NIC_COUNT'] = '%d' % len(instance.nics) |
1926 | 2266edb2 | Guido Trotter | result['DEBUG_LEVEL'] = '%d' % debug |
1927 | f11280b5 | Guido Trotter | if api_version >= constants.OS_API_V15:
|
1928 | f11280b5 | Guido Trotter | try:
|
1929 | f11280b5 | Guido Trotter | variant = instance.os.split('+', 1)[1] |
1930 | f11280b5 | Guido Trotter | except IndexError: |
1931 | 099c52ad | Iustin Pop | variant = inst_os.supported_variants[0]
|
1932 | f11280b5 | Guido Trotter | result['OS_VARIANT'] = variant
|
1933 | 2266edb2 | Guido Trotter | for idx, disk in enumerate(instance.disks): |
1934 | f2e07bb4 | Michael Hanselmann | real_disk = _OpenRealBD(disk) |
1935 | 2266edb2 | Guido Trotter | result['DISK_%d_PATH' % idx] = real_disk.dev_path
|
1936 | 15552312 | Iustin Pop | result['DISK_%d_ACCESS' % idx] = disk.mode
|
1937 | 2266edb2 | Guido Trotter | if constants.HV_DISK_TYPE in instance.hvparams: |
1938 | 2266edb2 | Guido Trotter | result['DISK_%d_FRONTEND_TYPE' % idx] = \
|
1939 | 2266edb2 | Guido Trotter | instance.hvparams[constants.HV_DISK_TYPE] |
1940 | 2266edb2 | Guido Trotter | if disk.dev_type in constants.LDS_BLOCK: |
1941 | 2266edb2 | Guido Trotter | result['DISK_%d_BACKEND_TYPE' % idx] = 'block' |
1942 | 2266edb2 | Guido Trotter | elif disk.dev_type == constants.LD_FILE:
|
1943 | 2266edb2 | Guido Trotter | result['DISK_%d_BACKEND_TYPE' % idx] = \
|
1944 | 2266edb2 | Guido Trotter | 'file:%s' % disk.physical_id[0] |
1945 | 2266edb2 | Guido Trotter | for idx, nic in enumerate(instance.nics): |
1946 | 2266edb2 | Guido Trotter | result['NIC_%d_MAC' % idx] = nic.mac
|
1947 | 2266edb2 | Guido Trotter | if nic.ip:
|
1948 | 2266edb2 | Guido Trotter | result['NIC_%d_IP' % idx] = nic.ip
|
1949 | 1ba9227f | Guido Trotter | result['NIC_%d_MODE' % idx] = nic.nicparams[constants.NIC_MODE]
|
1950 | 1ba9227f | Guido Trotter | if nic.nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
|
1951 | 1ba9227f | Guido Trotter | result['NIC_%d_BRIDGE' % idx] = nic.nicparams[constants.NIC_LINK]
|
1952 | 1ba9227f | Guido Trotter | if nic.nicparams[constants.NIC_LINK]:
|
1953 | 1ba9227f | Guido Trotter | result['NIC_%d_LINK' % idx] = nic.nicparams[constants.NIC_LINK]
|
1954 | 2266edb2 | Guido Trotter | if constants.HV_NIC_TYPE in instance.hvparams: |
1955 | 2266edb2 | Guido Trotter | result['NIC_%d_FRONTEND_TYPE' % idx] = \
|
1956 | 2266edb2 | Guido Trotter | instance.hvparams[constants.HV_NIC_TYPE] |
1957 | 2266edb2 | Guido Trotter | |
1958 | 67fc3042 | Iustin Pop | for source, kind in [(instance.beparams, "BE"), (instance.hvparams, "HV")]: |
1959 | 67fc3042 | Iustin Pop | for key, value in source.items(): |
1960 | 030b218a | Iustin Pop | result["INSTANCE_%s_%s" % (kind, key)] = str(value) |
1961 | 67fc3042 | Iustin Pop | |
1962 | 2266edb2 | Guido Trotter | return result
|
1963 | a8083063 | Iustin Pop | |
1964 | f2e07bb4 | Michael Hanselmann | |
1965 | 821d1bd1 | Iustin Pop | def BlockdevGrow(disk, amount): |
1966 | 594609c0 | Iustin Pop | """Grow a stack of block devices.
|
1967 | 594609c0 | Iustin Pop |
|
1968 | 594609c0 | Iustin Pop | This function is called recursively, with the childrens being the
|
1969 | 10c2650b | Iustin Pop | first ones to resize.
|
1970 | 594609c0 | Iustin Pop |
|
1971 | 10c2650b | Iustin Pop | @type disk: L{objects.Disk}
|
1972 | 10c2650b | Iustin Pop | @param disk: the disk to be grown
|
1973 | 10c2650b | Iustin Pop | @rtype: (status, result)
|
1974 | 10c2650b | Iustin Pop | @return: a tuple with the status of the operation
|
1975 | 10c2650b | Iustin Pop | (True/False), and the errors message if status
|
1976 | 10c2650b | Iustin Pop | is False
|
1977 | 594609c0 | Iustin Pop |
|
1978 | 594609c0 | Iustin Pop | """
|
1979 | 594609c0 | Iustin Pop | r_dev = _RecursiveFindBD(disk) |
1980 | 594609c0 | Iustin Pop | if r_dev is None: |
1981 | afdc3985 | Iustin Pop | _Fail("Cannot find block device %s", disk)
|
1982 | 594609c0 | Iustin Pop | |
1983 | 594609c0 | Iustin Pop | try:
|
1984 | 594609c0 | Iustin Pop | r_dev.Grow(amount) |
1985 | 594609c0 | Iustin Pop | except errors.BlockDeviceError, err:
|
1986 | 2cc6781a | Iustin Pop | _Fail("Failed to grow block device: %s", err, exc=True) |
1987 | 594609c0 | Iustin Pop | |
1988 | 594609c0 | Iustin Pop | |
1989 | 821d1bd1 | Iustin Pop | def BlockdevSnapshot(disk): |
1990 | a8083063 | Iustin Pop | """Create a snapshot copy of a block device.
|
1991 | a8083063 | Iustin Pop |
|
1992 | a8083063 | Iustin Pop | This function is called recursively, and the snapshot is actually created
|
1993 | a8083063 | Iustin Pop | just for the leaf lvm backend device.
|
1994 | a8083063 | Iustin Pop |
|
1995 | e9e9263d | Guido Trotter | @type disk: L{objects.Disk}
|
1996 | e9e9263d | Guido Trotter | @param disk: the disk to be snapshotted
|
1997 | e9e9263d | Guido Trotter | @rtype: string
|
1998 | e9e9263d | Guido Trotter | @return: snapshot disk path
|
1999 | a8083063 | Iustin Pop |
|
2000 | 098c0958 | Michael Hanselmann | """
|
2001 | 433c63aa | Iustin Pop | if disk.dev_type == constants.LD_DRBD8:
|
2002 | 433c63aa | Iustin Pop | if not disk.children: |
2003 | 433c63aa | Iustin Pop | _Fail("DRBD device '%s' without backing storage cannot be snapshotted",
|
2004 | 433c63aa | Iustin Pop | disk.unique_id) |
2005 | 433c63aa | Iustin Pop | return BlockdevSnapshot(disk.children[0]) |
2006 | fe96220b | Iustin Pop | elif disk.dev_type == constants.LD_LV:
|
2007 | a8083063 | Iustin Pop | r_dev = _RecursiveFindBD(disk) |
2008 | a8083063 | Iustin Pop | if r_dev is not None: |
2009 | 433c63aa | Iustin Pop | # FIXME: choose a saner value for the snapshot size
|
2010 | a8083063 | Iustin Pop | # let's stay on the safe side and ask for the full size, for now
|
2011 | c26a6bd2 | Iustin Pop | return r_dev.Snapshot(disk.size)
|
2012 | a8083063 | Iustin Pop | else:
|
2013 | 87812fd3 | Iustin Pop | _Fail("Cannot find block device %s", disk)
|
2014 | a8083063 | Iustin Pop | else:
|
2015 | 87812fd3 | Iustin Pop | _Fail("Cannot snapshot non-lvm block device '%s' of type '%s'",
|
2016 | 87812fd3 | Iustin Pop | disk.unique_id, disk.dev_type) |
2017 | a8083063 | Iustin Pop | |
2018 | a8083063 | Iustin Pop | |
2019 | 4a0e011f | Iustin Pop | def ExportSnapshot(disk, dest_node, instance, cluster_name, idx, debug): |
2020 | a8083063 | Iustin Pop | """Export a block device snapshot to a remote node.
|
2021 | a8083063 | Iustin Pop |
|
2022 | 74c47259 | Iustin Pop | @type disk: L{objects.Disk}
|
2023 | 74c47259 | Iustin Pop | @param disk: the description of the disk to export
|
2024 | 74c47259 | Iustin Pop | @type dest_node: str
|
2025 | 74c47259 | Iustin Pop | @param dest_node: the destination node to export to
|
2026 | 74c47259 | Iustin Pop | @type instance: L{objects.Instance}
|
2027 | 74c47259 | Iustin Pop | @param instance: the instance object to whom the disk belongs
|
2028 | 74c47259 | Iustin Pop | @type cluster_name: str
|
2029 | 74c47259 | Iustin Pop | @param cluster_name: the cluster name, needed for SSH hostalias
|
2030 | 74c47259 | Iustin Pop | @type idx: int
|
2031 | 74c47259 | Iustin Pop | @param idx: the index of the disk in the instance's disk list,
|
2032 | 74c47259 | Iustin Pop | used to export to the OS scripts environment
|
2033 | 4a0e011f | Iustin Pop | @type debug: integer
|
2034 | 4a0e011f | Iustin Pop | @param debug: debug level, passed to the OS scripts
|
2035 | c26a6bd2 | Iustin Pop | @rtype: None
|
2036 | a8083063 | Iustin Pop |
|
2037 | 098c0958 | Michael Hanselmann | """
|
2038 | a8083063 | Iustin Pop | inst_os = OSFromDisk(instance.os) |
2039 | 4a0e011f | Iustin Pop | export_env = OSEnvironment(instance, inst_os, debug) |
2040 | d1a7d66f | Guido Trotter | |
2041 | a8083063 | Iustin Pop | export_script = inst_os.export_script |
2042 | a8083063 | Iustin Pop | |
2043 | 81a3406c | Iustin Pop | logfile = _InstanceLogName("export", inst_os.name, instance.name)
|
2044 | ba55d062 | Iustin Pop | |
2045 | f2e07bb4 | Michael Hanselmann | real_disk = _OpenRealBD(disk) |
2046 | 0607699d | Guido Trotter | |
2047 | 0607699d | Guido Trotter | export_env['EXPORT_DEVICE'] = real_disk.dev_path
|
2048 | 74c47259 | Iustin Pop | export_env['EXPORT_INDEX'] = str(idx) |
2049 | a8083063 | Iustin Pop | |
2050 | c4feafe8 | Iustin Pop | destdir = utils.PathJoin(constants.EXPORT_DIR, instance.name + ".new")
|
2051 | a8083063 | Iustin Pop | destfile = disk.physical_id[1]
|
2052 | a8083063 | Iustin Pop | |
2053 | a8083063 | Iustin Pop | # the target command is built out of three individual commands,
|
2054 | a8083063 | Iustin Pop | # which are joined by pipes; we check each individual command for
|
2055 | a8083063 | Iustin Pop | # valid parameters
|
2056 | a48b08bf | Iustin Pop | expcmd = utils.BuildShellCmd("set -e; set -o pipefail; cd %s; %s 2>%s",
|
2057 | a48b08bf | Iustin Pop | inst_os.path, export_script, logfile) |
2058 | a8083063 | Iustin Pop | |
2059 | a8083063 | Iustin Pop | comprcmd = "gzip"
|
2060 | a8083063 | Iustin Pop | |
2061 | 0411c011 | Iustin Pop | destcmd = utils.BuildShellCmd("mkdir -p %s && cat > %s",
|
2062 | 0411c011 | Iustin Pop | destdir, utils.PathJoin(destdir, destfile)) |
2063 | 62c9ec92 | Iustin Pop | remotecmd = _GetSshRunner(cluster_name).BuildCmd(dest_node, |
2064 | 62c9ec92 | Iustin Pop | constants.GANETI_RUNAS, |
2065 | 62c9ec92 | Iustin Pop | destcmd) |
2066 | a8083063 | Iustin Pop | |
2067 | a8083063 | Iustin Pop | # all commands have been checked, so we're safe to combine them
|
2068 | 72f0f7fd | Iustin Pop | command = '|'.join([expcmd, comprcmd, utils.ShellQuoteArgs(remotecmd)])
|
2069 | a8083063 | Iustin Pop | |
2070 | a48b08bf | Iustin Pop | result = utils.RunCmd(["bash", "-c", command], env=export_env) |
2071 | a8083063 | Iustin Pop | |
2072 | a8083063 | Iustin Pop | if result.failed:
|
2073 | ba55d062 | Iustin Pop | _Fail("OS snapshot export command '%s' returned error: %s"
|
2074 | ba55d062 | Iustin Pop | " output: %s", command, result.fail_reason, result.output)
|
2075 | a8083063 | Iustin Pop | |
2076 | a8083063 | Iustin Pop | |
2077 | a8083063 | Iustin Pop | def FinalizeExport(instance, snap_disks): |
2078 | a8083063 | Iustin Pop | """Write out the export configuration information.
|
2079 | a8083063 | Iustin Pop |
|
2080 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
2081 | 10c2650b | Iustin Pop | @param instance: the instance which we export, used for
|
2082 | 10c2650b | Iustin Pop | saving configuration
|
2083 | 10c2650b | Iustin Pop | @type snap_disks: list of L{objects.Disk}
|
2084 | 10c2650b | Iustin Pop | @param snap_disks: list of snapshot block devices, which
|
2085 | 10c2650b | Iustin Pop | will be used to get the actual name of the dump file
|
2086 | a8083063 | Iustin Pop |
|
2087 | c26a6bd2 | Iustin Pop | @rtype: None
|
2088 | a8083063 | Iustin Pop |
|
2089 | 098c0958 | Michael Hanselmann | """
|
2090 | c4feafe8 | Iustin Pop | destdir = utils.PathJoin(constants.EXPORT_DIR, instance.name + ".new")
|
2091 | c4feafe8 | Iustin Pop | finaldestdir = utils.PathJoin(constants.EXPORT_DIR, instance.name) |
2092 | a8083063 | Iustin Pop | |
2093 | a8083063 | Iustin Pop | config = objects.SerializableConfigParser() |
2094 | a8083063 | Iustin Pop | |
2095 | a8083063 | Iustin Pop | config.add_section(constants.INISECT_EXP) |
2096 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'version', '0') |
2097 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'timestamp', '%d' % int(time.time())) |
2098 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'source', instance.primary_node)
|
2099 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'os', instance.os)
|
2100 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'compression', 'gzip') |
2101 | a8083063 | Iustin Pop | |
2102 | a8083063 | Iustin Pop | config.add_section(constants.INISECT_INS) |
2103 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'name', instance.name)
|
2104 | 51de46bf | Iustin Pop | config.set(constants.INISECT_INS, 'memory', '%d' % |
2105 | 51de46bf | Iustin Pop | instance.beparams[constants.BE_MEMORY]) |
2106 | 51de46bf | Iustin Pop | config.set(constants.INISECT_INS, 'vcpus', '%d' % |
2107 | 51de46bf | Iustin Pop | instance.beparams[constants.BE_VCPUS]) |
2108 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'disk_template', instance.disk_template)
|
2109 | 3c8954ad | Iustin Pop | config.set(constants.INISECT_INS, 'hypervisor', instance.hypervisor)
|
2110 | 66f93869 | Manuel Franceschini | |
2111 | 95268cc3 | Iustin Pop | nic_total = 0
|
2112 | a8083063 | Iustin Pop | for nic_count, nic in enumerate(instance.nics): |
2113 | 95268cc3 | Iustin Pop | nic_total += 1
|
2114 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'nic%d_mac' %
|
2115 | a8083063 | Iustin Pop | nic_count, '%s' % nic.mac)
|
2116 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'nic%d_ip' % nic_count, '%s' % nic.ip) |
2117 | 6801eb5c | Iustin Pop | for param in constants.NICS_PARAMETER_TYPES: |
2118 | 6801eb5c | Iustin Pop | config.set(constants.INISECT_INS, 'nic%d_%s' % (nic_count, param),
|
2119 | 6801eb5c | Iustin Pop | '%s' % nic.nicparams.get(param, None)) |
2120 | a8083063 | Iustin Pop | # TODO: redundant: on load can read nics until it doesn't exist
|
2121 | 95268cc3 | Iustin Pop | config.set(constants.INISECT_INS, 'nic_count' , '%d' % nic_total) |
2122 | a8083063 | Iustin Pop | |
2123 | 726d7d68 | Iustin Pop | disk_total = 0
|
2124 | a8083063 | Iustin Pop | for disk_count, disk in enumerate(snap_disks): |
2125 | 19d7f90a | Guido Trotter | if disk:
|
2126 | 726d7d68 | Iustin Pop | disk_total += 1
|
2127 | 19d7f90a | Guido Trotter | config.set(constants.INISECT_INS, 'disk%d_ivname' % disk_count,
|
2128 | 19d7f90a | Guido Trotter | ('%s' % disk.iv_name))
|
2129 | 19d7f90a | Guido Trotter | config.set(constants.INISECT_INS, 'disk%d_dump' % disk_count,
|
2130 | 19d7f90a | Guido Trotter | ('%s' % disk.physical_id[1])) |
2131 | 19d7f90a | Guido Trotter | config.set(constants.INISECT_INS, 'disk%d_size' % disk_count,
|
2132 | 19d7f90a | Guido Trotter | ('%d' % disk.size))
|
2133 | a8083063 | Iustin Pop | |
2134 | 726d7d68 | Iustin Pop | config.set(constants.INISECT_INS, 'disk_count' , '%d' % disk_total) |
2135 | a8083063 | Iustin Pop | |
2136 | 3c8954ad | Iustin Pop | # New-style hypervisor/backend parameters
|
2137 | 3c8954ad | Iustin Pop | |
2138 | 3c8954ad | Iustin Pop | config.add_section(constants.INISECT_HYP) |
2139 | 3c8954ad | Iustin Pop | for name, value in instance.hvparams.items(): |
2140 | 3c8954ad | Iustin Pop | if name not in constants.HVC_GLOBALS: |
2141 | 3c8954ad | Iustin Pop | config.set(constants.INISECT_HYP, name, str(value))
|
2142 | 3c8954ad | Iustin Pop | |
2143 | 3c8954ad | Iustin Pop | config.add_section(constants.INISECT_BEP) |
2144 | 3c8954ad | Iustin Pop | for name, value in instance.beparams.items(): |
2145 | 3c8954ad | Iustin Pop | config.set(constants.INISECT_BEP, name, str(value))
|
2146 | 3c8954ad | Iustin Pop | |
2147 | c4feafe8 | Iustin Pop | utils.WriteFile(utils.PathJoin(destdir, constants.EXPORT_CONF_FILE), |
2148 | 726d7d68 | Iustin Pop | data=config.Dumps()) |
2149 | 56569f4e | Michael Hanselmann | shutil.rmtree(finaldestdir, ignore_errors=True)
|
2150 | a8083063 | Iustin Pop | shutil.move(destdir, finaldestdir) |
2151 | a8083063 | Iustin Pop | |
2152 | a8083063 | Iustin Pop | |
2153 | a8083063 | Iustin Pop | def ExportInfo(dest): |
2154 | a8083063 | Iustin Pop | """Get export configuration information.
|
2155 | a8083063 | Iustin Pop |
|
2156 | 10c2650b | Iustin Pop | @type dest: str
|
2157 | 10c2650b | Iustin Pop | @param dest: directory containing the export
|
2158 | a8083063 | Iustin Pop |
|
2159 | 10c2650b | Iustin Pop | @rtype: L{objects.SerializableConfigParser}
|
2160 | 10c2650b | Iustin Pop | @return: a serializable config file containing the
|
2161 | 10c2650b | Iustin Pop | export info
|
2162 | a8083063 | Iustin Pop |
|
2163 | a8083063 | Iustin Pop | """
|
2164 | c4feafe8 | Iustin Pop | cff = utils.PathJoin(dest, constants.EXPORT_CONF_FILE) |
2165 | a8083063 | Iustin Pop | |
2166 | a8083063 | Iustin Pop | config = objects.SerializableConfigParser() |
2167 | a8083063 | Iustin Pop | config.read(cff) |
2168 | a8083063 | Iustin Pop | |
2169 | a8083063 | Iustin Pop | if (not config.has_section(constants.INISECT_EXP) or |
2170 | a8083063 | Iustin Pop | not config.has_section(constants.INISECT_INS)):
|
2171 | 3eccac06 | Iustin Pop | _Fail("Export info file doesn't have the required fields")
|
2172 | a8083063 | Iustin Pop | |
2173 | c26a6bd2 | Iustin Pop | return config.Dumps()
|
2174 | a8083063 | Iustin Pop | |
2175 | a8083063 | Iustin Pop | |
2176 | 4a0e011f | Iustin Pop | def ImportOSIntoInstance(instance, src_node, src_images, cluster_name, debug): |
2177 | a8083063 | Iustin Pop | """Import an os image into an instance.
|
2178 | a8083063 | Iustin Pop |
|
2179 | b1206984 | Iustin Pop | @type instance: L{objects.Instance}
|
2180 | 6c0af70e | Guido Trotter | @param instance: instance to import the disks into
|
2181 | 6c0af70e | Guido Trotter | @type src_node: string
|
2182 | 6c0af70e | Guido Trotter | @param src_node: source node for the disk images
|
2183 | 6c0af70e | Guido Trotter | @type src_images: list of string
|
2184 | 6c0af70e | Guido Trotter | @param src_images: absolute paths of the disk images
|
2185 | 4a0e011f | Iustin Pop | @type debug: integer
|
2186 | 4a0e011f | Iustin Pop | @param debug: debug level, passed to the OS scripts
|
2187 | 6c0af70e | Guido Trotter | @rtype: list of boolean
|
2188 | 6c0af70e | Guido Trotter | @return: each boolean represent the success of importing the n-th disk
|
2189 | a8083063 | Iustin Pop |
|
2190 | a8083063 | Iustin Pop | """
|
2191 | a8083063 | Iustin Pop | inst_os = OSFromDisk(instance.os) |
2192 | 4a0e011f | Iustin Pop | import_env = OSEnvironment(instance, inst_os, debug) |
2193 | a8083063 | Iustin Pop | import_script = inst_os.import_script |
2194 | a8083063 | Iustin Pop | |
2195 | 81a3406c | Iustin Pop | logfile = _InstanceLogName("import", instance.os, instance.name)
|
2196 | a8083063 | Iustin Pop | |
2197 | a8083063 | Iustin Pop | comprcmd = "gunzip"
|
2198 | d868edb4 | Iustin Pop | impcmd = utils.BuildShellCmd("(cd %s; %s >%s 2>&1)", inst_os.path,
|
2199 | d868edb4 | Iustin Pop | import_script, logfile) |
2200 | a8083063 | Iustin Pop | |
2201 | 6c0af70e | Guido Trotter | final_result = [] |
2202 | 6c0af70e | Guido Trotter | for idx, image in enumerate(src_images): |
2203 | 6c0af70e | Guido Trotter | if image:
|
2204 | 6c0af70e | Guido Trotter | destcmd = utils.BuildShellCmd('cat %s', image)
|
2205 | 6c0af70e | Guido Trotter | remotecmd = _GetSshRunner(cluster_name).BuildCmd(src_node, |
2206 | 6c0af70e | Guido Trotter | constants.GANETI_RUNAS, |
2207 | 6c0af70e | Guido Trotter | destcmd) |
2208 | 6c0af70e | Guido Trotter | command = '|'.join([utils.ShellQuoteArgs(remotecmd), comprcmd, impcmd])
|
2209 | 6c0af70e | Guido Trotter | import_env['IMPORT_DEVICE'] = import_env['DISK_%d_PATH' % idx] |
2210 | 74c47259 | Iustin Pop | import_env['IMPORT_INDEX'] = str(idx) |
2211 | 6c0af70e | Guido Trotter | result = utils.RunCmd(command, env=import_env) |
2212 | 6c0af70e | Guido Trotter | if result.failed:
|
2213 | 726d7d68 | Iustin Pop | logging.error("Disk import command '%s' returned error: %s"
|
2214 | 726d7d68 | Iustin Pop | " output: %s", command, result.fail_reason,
|
2215 | 726d7d68 | Iustin Pop | result.output) |
2216 | 944bf548 | Iustin Pop | final_result.append("error importing disk %d: %s, %s" %
|
2217 | 944bf548 | Iustin Pop | (idx, result.fail_reason, result.output[-100]))
|
2218 | a8083063 | Iustin Pop | |
2219 | 944bf548 | Iustin Pop | if final_result:
|
2220 | afdc3985 | Iustin Pop | _Fail("; ".join(final_result), log=False) |
2221 | a8083063 | Iustin Pop | |
2222 | a8083063 | Iustin Pop | |
2223 | a8083063 | Iustin Pop | def ListExports(): |
2224 | a8083063 | Iustin Pop | """Return a list of exports currently available on this machine.
|
2225 | 098c0958 | Michael Hanselmann |
|
2226 | 10c2650b | Iustin Pop | @rtype: list
|
2227 | 10c2650b | Iustin Pop | @return: list of the exports
|
2228 | 10c2650b | Iustin Pop |
|
2229 | a8083063 | Iustin Pop | """
|
2230 | a8083063 | Iustin Pop | if os.path.isdir(constants.EXPORT_DIR):
|
2231 | c26a6bd2 | Iustin Pop | return utils.ListVisibleFiles(constants.EXPORT_DIR)
|
2232 | a8083063 | Iustin Pop | else:
|
2233 | afdc3985 | Iustin Pop | _Fail("No exports directory")
|
2234 | a8083063 | Iustin Pop | |
2235 | a8083063 | Iustin Pop | |
2236 | a8083063 | Iustin Pop | def RemoveExport(export): |
2237 | a8083063 | Iustin Pop | """Remove an existing export from the node.
|
2238 | a8083063 | Iustin Pop |
|
2239 | 10c2650b | Iustin Pop | @type export: str
|
2240 | 10c2650b | Iustin Pop | @param export: the name of the export to remove
|
2241 | c26a6bd2 | Iustin Pop | @rtype: None
|
2242 | a8083063 | Iustin Pop |
|
2243 | 098c0958 | Michael Hanselmann | """
|
2244 | c4feafe8 | Iustin Pop | target = utils.PathJoin(constants.EXPORT_DIR, export) |
2245 | a8083063 | Iustin Pop | |
2246 | 35fbcd11 | Iustin Pop | try:
|
2247 | 35fbcd11 | Iustin Pop | shutil.rmtree(target) |
2248 | 35fbcd11 | Iustin Pop | except EnvironmentError, err: |
2249 | 35fbcd11 | Iustin Pop | _Fail("Error while removing the export: %s", err, exc=True) |
2250 | a8083063 | Iustin Pop | |
2251 | a8083063 | Iustin Pop | |
2252 | 821d1bd1 | Iustin Pop | def BlockdevRename(devlist): |
2253 | f3e513ad | Iustin Pop | """Rename a list of block devices.
|
2254 | f3e513ad | Iustin Pop |
|
2255 | 10c2650b | Iustin Pop | @type devlist: list of tuples
|
2256 | 10c2650b | Iustin Pop | @param devlist: list of tuples of the form (disk,
|
2257 | 10c2650b | Iustin Pop | new_logical_id, new_physical_id); disk is an
|
2258 | 10c2650b | Iustin Pop | L{objects.Disk} object describing the current disk,
|
2259 | 10c2650b | Iustin Pop | and new logical_id/physical_id is the name we
|
2260 | 10c2650b | Iustin Pop | rename it to
|
2261 | 10c2650b | Iustin Pop | @rtype: boolean
|
2262 | 10c2650b | Iustin Pop | @return: True if all renames succeeded, False otherwise
|
2263 | f3e513ad | Iustin Pop |
|
2264 | f3e513ad | Iustin Pop | """
|
2265 | 6b5e3f70 | Iustin Pop | msgs = [] |
2266 | f3e513ad | Iustin Pop | result = True
|
2267 | f3e513ad | Iustin Pop | for disk, unique_id in devlist: |
2268 | f3e513ad | Iustin Pop | dev = _RecursiveFindBD(disk) |
2269 | f3e513ad | Iustin Pop | if dev is None: |
2270 | 6b5e3f70 | Iustin Pop | msgs.append("Can't find device %s in rename" % str(disk)) |
2271 | f3e513ad | Iustin Pop | result = False
|
2272 | f3e513ad | Iustin Pop | continue
|
2273 | f3e513ad | Iustin Pop | try:
|
2274 | 3f78eef2 | Iustin Pop | old_rpath = dev.dev_path |
2275 | f3e513ad | Iustin Pop | dev.Rename(unique_id) |
2276 | 3f78eef2 | Iustin Pop | new_rpath = dev.dev_path |
2277 | 3f78eef2 | Iustin Pop | if old_rpath != new_rpath:
|
2278 | 3f78eef2 | Iustin Pop | DevCacheManager.RemoveCache(old_rpath) |
2279 | 3f78eef2 | Iustin Pop | # FIXME: we should add the new cache information here, like:
|
2280 | 3f78eef2 | Iustin Pop | # DevCacheManager.UpdateCache(new_rpath, owner, ...)
|
2281 | 3f78eef2 | Iustin Pop | # but we don't have the owner here - maybe parse from existing
|
2282 | 3f78eef2 | Iustin Pop | # cache? for now, we only lose lvm data when we rename, which
|
2283 | 3f78eef2 | Iustin Pop | # is less critical than DRBD or MD
|
2284 | f3e513ad | Iustin Pop | except errors.BlockDeviceError, err:
|
2285 | 6b5e3f70 | Iustin Pop | msgs.append("Can't rename device '%s' to '%s': %s" %
|
2286 | 6b5e3f70 | Iustin Pop | (dev, unique_id, err)) |
2287 | 18682bca | Iustin Pop | logging.exception("Can't rename device '%s' to '%s'", dev, unique_id)
|
2288 | f3e513ad | Iustin Pop | result = False
|
2289 | afdc3985 | Iustin Pop | if not result: |
2290 | afdc3985 | Iustin Pop | _Fail("; ".join(msgs))
|
2291 | f3e513ad | Iustin Pop | |
2292 | f3e513ad | Iustin Pop | |
2293 | 778b75bb | Manuel Franceschini | def _TransformFileStorageDir(file_storage_dir): |
2294 | 778b75bb | Manuel Franceschini | """Checks whether given file_storage_dir is valid.
|
2295 | 778b75bb | Manuel Franceschini |
|
2296 | 778b75bb | Manuel Franceschini | Checks wheter the given file_storage_dir is within the cluster-wide
|
2297 | 778b75bb | Manuel Franceschini | default file_storage_dir stored in SimpleStore. Only paths under that
|
2298 | 778b75bb | Manuel Franceschini | directory are allowed.
|
2299 | 778b75bb | Manuel Franceschini |
|
2300 | b1206984 | Iustin Pop | @type file_storage_dir: str
|
2301 | b1206984 | Iustin Pop | @param file_storage_dir: the path to check
|
2302 | d61cbe76 | Iustin Pop |
|
2303 | b1206984 | Iustin Pop | @return: the normalized path if valid, None otherwise
|
2304 | 778b75bb | Manuel Franceschini |
|
2305 | 778b75bb | Manuel Franceschini | """
|
2306 | cb7c0198 | Iustin Pop | if not constants.ENABLE_FILE_STORAGE: |
2307 | cb7c0198 | Iustin Pop | _Fail("File storage disabled at configure time")
|
2308 | c657dcc9 | Michael Hanselmann | cfg = _GetConfig() |
2309 | 778b75bb | Manuel Franceschini | file_storage_dir = os.path.normpath(file_storage_dir) |
2310 | c657dcc9 | Michael Hanselmann | base_file_storage_dir = cfg.GetFileStorageDir() |
2311 | 56569f4e | Michael Hanselmann | if (os.path.commonprefix([file_storage_dir, base_file_storage_dir]) !=
|
2312 | 778b75bb | Manuel Franceschini | base_file_storage_dir): |
2313 | b2b8bcce | Iustin Pop | _Fail("File storage directory '%s' is not under base file"
|
2314 | b2b8bcce | Iustin Pop | " storage directory '%s'", file_storage_dir, base_file_storage_dir)
|
2315 | 778b75bb | Manuel Franceschini | return file_storage_dir
|
2316 | 778b75bb | Manuel Franceschini | |
2317 | 778b75bb | Manuel Franceschini | |
2318 | 778b75bb | Manuel Franceschini | def CreateFileStorageDir(file_storage_dir): |
2319 | 778b75bb | Manuel Franceschini | """Create file storage directory.
|
2320 | 778b75bb | Manuel Franceschini |
|
2321 | b1206984 | Iustin Pop | @type file_storage_dir: str
|
2322 | b1206984 | Iustin Pop | @param file_storage_dir: directory to create
|
2323 | 778b75bb | Manuel Franceschini |
|
2324 | b1206984 | Iustin Pop | @rtype: tuple
|
2325 | b1206984 | Iustin Pop | @return: tuple with first element a boolean indicating wheter dir
|
2326 | b1206984 | Iustin Pop | creation was successful or not
|
2327 | 778b75bb | Manuel Franceschini |
|
2328 | 778b75bb | Manuel Franceschini | """
|
2329 | 778b75bb | Manuel Franceschini | file_storage_dir = _TransformFileStorageDir(file_storage_dir) |
2330 | b2b8bcce | Iustin Pop | if os.path.exists(file_storage_dir):
|
2331 | b2b8bcce | Iustin Pop | if not os.path.isdir(file_storage_dir): |
2332 | b2b8bcce | Iustin Pop | _Fail("Specified storage dir '%s' is not a directory",
|
2333 | b2b8bcce | Iustin Pop | file_storage_dir) |
2334 | 778b75bb | Manuel Franceschini | else:
|
2335 | b2b8bcce | Iustin Pop | try:
|
2336 | b2b8bcce | Iustin Pop | os.makedirs(file_storage_dir, 0750)
|
2337 | b2b8bcce | Iustin Pop | except OSError, err: |
2338 | b2b8bcce | Iustin Pop | _Fail("Cannot create file storage directory '%s': %s",
|
2339 | b2b8bcce | Iustin Pop | file_storage_dir, err, exc=True)
|
2340 | 778b75bb | Manuel Franceschini | |
2341 | 778b75bb | Manuel Franceschini | |
2342 | 778b75bb | Manuel Franceschini | def RemoveFileStorageDir(file_storage_dir): |
2343 | 778b75bb | Manuel Franceschini | """Remove file storage directory.
|
2344 | 778b75bb | Manuel Franceschini |
|
2345 | 778b75bb | Manuel Franceschini | Remove it only if it's empty. If not log an error and return.
|
2346 | 778b75bb | Manuel Franceschini |
|
2347 | 10c2650b | Iustin Pop | @type file_storage_dir: str
|
2348 | 10c2650b | Iustin Pop | @param file_storage_dir: the directory we should cleanup
|
2349 | 10c2650b | Iustin Pop | @rtype: tuple (success,)
|
2350 | 10c2650b | Iustin Pop | @return: tuple of one element, C{success}, denoting
|
2351 | 5bbd3f7f | Michael Hanselmann | whether the operation was successful
|
2352 | 778b75bb | Manuel Franceschini |
|
2353 | 778b75bb | Manuel Franceschini | """
|
2354 | 778b75bb | Manuel Franceschini | file_storage_dir = _TransformFileStorageDir(file_storage_dir) |
2355 | b2b8bcce | Iustin Pop | if os.path.exists(file_storage_dir):
|
2356 | b2b8bcce | Iustin Pop | if not os.path.isdir(file_storage_dir): |
2357 | b2b8bcce | Iustin Pop | _Fail("Specified Storage directory '%s' is not a directory",
|
2358 | b2b8bcce | Iustin Pop | file_storage_dir) |
2359 | afdc3985 | Iustin Pop | # deletes dir only if empty, otherwise we want to fail the rpc call
|
2360 | b2b8bcce | Iustin Pop | try:
|
2361 | b2b8bcce | Iustin Pop | os.rmdir(file_storage_dir) |
2362 | b2b8bcce | Iustin Pop | except OSError, err: |
2363 | b2b8bcce | Iustin Pop | _Fail("Cannot remove file storage directory '%s': %s",
|
2364 | b2b8bcce | Iustin Pop | file_storage_dir, err) |
2365 | b2b8bcce | Iustin Pop | |
2366 | 778b75bb | Manuel Franceschini | |
2367 | 778b75bb | Manuel Franceschini | def RenameFileStorageDir(old_file_storage_dir, new_file_storage_dir): |
2368 | 778b75bb | Manuel Franceschini | """Rename the file storage directory.
|
2369 | 778b75bb | Manuel Franceschini |
|
2370 | 10c2650b | Iustin Pop | @type old_file_storage_dir: str
|
2371 | 10c2650b | Iustin Pop | @param old_file_storage_dir: the current path
|
2372 | 10c2650b | Iustin Pop | @type new_file_storage_dir: str
|
2373 | 10c2650b | Iustin Pop | @param new_file_storage_dir: the name we should rename to
|
2374 | 10c2650b | Iustin Pop | @rtype: tuple (success,)
|
2375 | 10c2650b | Iustin Pop | @return: tuple of one element, C{success}, denoting
|
2376 | 10c2650b | Iustin Pop | whether the operation was successful
|
2377 | 778b75bb | Manuel Franceschini |
|
2378 | 778b75bb | Manuel Franceschini | """
|
2379 | 778b75bb | Manuel Franceschini | old_file_storage_dir = _TransformFileStorageDir(old_file_storage_dir) |
2380 | 778b75bb | Manuel Franceschini | new_file_storage_dir = _TransformFileStorageDir(new_file_storage_dir) |
2381 | b2b8bcce | Iustin Pop | if not os.path.exists(new_file_storage_dir): |
2382 | b2b8bcce | Iustin Pop | if os.path.isdir(old_file_storage_dir):
|
2383 | b2b8bcce | Iustin Pop | try:
|
2384 | b2b8bcce | Iustin Pop | os.rename(old_file_storage_dir, new_file_storage_dir) |
2385 | b2b8bcce | Iustin Pop | except OSError, err: |
2386 | b2b8bcce | Iustin Pop | _Fail("Cannot rename '%s' to '%s': %s",
|
2387 | b2b8bcce | Iustin Pop | old_file_storage_dir, new_file_storage_dir, err) |
2388 | 778b75bb | Manuel Franceschini | else:
|
2389 | b2b8bcce | Iustin Pop | _Fail("Specified storage dir '%s' is not a directory",
|
2390 | b2b8bcce | Iustin Pop | old_file_storage_dir) |
2391 | b2b8bcce | Iustin Pop | else:
|
2392 | b2b8bcce | Iustin Pop | if os.path.exists(old_file_storage_dir):
|
2393 | b2b8bcce | Iustin Pop | _Fail("Cannot rename '%s' to '%s': both locations exist",
|
2394 | b2b8bcce | Iustin Pop | old_file_storage_dir, new_file_storage_dir) |
2395 | 778b75bb | Manuel Franceschini | |
2396 | 778b75bb | Manuel Franceschini | |
2397 | c8457ce7 | Iustin Pop | def _EnsureJobQueueFile(file_name): |
2398 | dc31eae3 | Michael Hanselmann | """Checks whether the given filename is in the queue directory.
|
2399 | ca52cdeb | Michael Hanselmann |
|
2400 | 10c2650b | Iustin Pop | @type file_name: str
|
2401 | 10c2650b | Iustin Pop | @param file_name: the file name we should check
|
2402 | c8457ce7 | Iustin Pop | @rtype: None
|
2403 | c8457ce7 | Iustin Pop | @raises RPCFail: if the file is not valid
|
2404 | 10c2650b | Iustin Pop |
|
2405 | ca52cdeb | Michael Hanselmann | """
|
2406 | ca52cdeb | Michael Hanselmann | queue_dir = os.path.normpath(constants.QUEUE_DIR) |
2407 | dc31eae3 | Michael Hanselmann | result = (os.path.commonprefix([queue_dir, file_name]) == queue_dir) |
2408 | dc31eae3 | Michael Hanselmann | |
2409 | dc31eae3 | Michael Hanselmann | if not result: |
2410 | c8457ce7 | Iustin Pop | _Fail("Passed job queue file '%s' does not belong to"
|
2411 | c8457ce7 | Iustin Pop | " the queue directory '%s'", file_name, queue_dir)
|
2412 | dc31eae3 | Michael Hanselmann | |
2413 | dc31eae3 | Michael Hanselmann | |
2414 | dc31eae3 | Michael Hanselmann | def JobQueueUpdate(file_name, content): |
2415 | dc31eae3 | Michael Hanselmann | """Updates a file in the queue directory.
|
2416 | dc31eae3 | Michael Hanselmann |
|
2417 | 10c2650b | Iustin Pop | This is just a wrapper over L{utils.WriteFile}, with proper
|
2418 | 10c2650b | Iustin Pop | checking.
|
2419 | 10c2650b | Iustin Pop |
|
2420 | 10c2650b | Iustin Pop | @type file_name: str
|
2421 | 10c2650b | Iustin Pop | @param file_name: the job file name
|
2422 | 10c2650b | Iustin Pop | @type content: str
|
2423 | 10c2650b | Iustin Pop | @param content: the new job contents
|
2424 | 10c2650b | Iustin Pop | @rtype: boolean
|
2425 | 10c2650b | Iustin Pop | @return: the success of the operation
|
2426 | 10c2650b | Iustin Pop |
|
2427 | dc31eae3 | Michael Hanselmann | """
|
2428 | c8457ce7 | Iustin Pop | _EnsureJobQueueFile(file_name) |
2429 | ca52cdeb | Michael Hanselmann | |
2430 | ca52cdeb | Michael Hanselmann | # Write and replace the file atomically
|
2431 | 12bce260 | Michael Hanselmann | utils.WriteFile(file_name, data=_Decompress(content)) |
2432 | ca52cdeb | Michael Hanselmann | |
2433 | ca52cdeb | Michael Hanselmann | |
2434 | af5ebcb1 | Michael Hanselmann | def JobQueueRename(old, new): |
2435 | af5ebcb1 | Michael Hanselmann | """Renames a job queue file.
|
2436 | af5ebcb1 | Michael Hanselmann |
|
2437 | c41eea6e | Iustin Pop | This is just a wrapper over os.rename with proper checking.
|
2438 | 10c2650b | Iustin Pop |
|
2439 | 10c2650b | Iustin Pop | @type old: str
|
2440 | 10c2650b | Iustin Pop | @param old: the old (actual) file name
|
2441 | 10c2650b | Iustin Pop | @type new: str
|
2442 | 10c2650b | Iustin Pop | @param new: the desired file name
|
2443 | c8457ce7 | Iustin Pop | @rtype: tuple
|
2444 | c8457ce7 | Iustin Pop | @return: the success of the operation and payload
|
2445 | 10c2650b | Iustin Pop |
|
2446 | af5ebcb1 | Michael Hanselmann | """
|
2447 | c8457ce7 | Iustin Pop | _EnsureJobQueueFile(old) |
2448 | c8457ce7 | Iustin Pop | _EnsureJobQueueFile(new) |
2449 | af5ebcb1 | Michael Hanselmann | |
2450 | 58b22b6e | Michael Hanselmann | utils.RenameFile(old, new, mkdir=True)
|
2451 | af5ebcb1 | Michael Hanselmann | |
2452 | af5ebcb1 | Michael Hanselmann | |
2453 | 5d672980 | Iustin Pop | def JobQueueSetDrainFlag(drain_flag): |
2454 | 5d672980 | Iustin Pop | """Set the drain flag for the queue.
|
2455 | 5d672980 | Iustin Pop |
|
2456 | 5d672980 | Iustin Pop | This will set or unset the queue drain flag.
|
2457 | 5d672980 | Iustin Pop |
|
2458 | 10c2650b | Iustin Pop | @type drain_flag: boolean
|
2459 | 5d672980 | Iustin Pop | @param drain_flag: if True, will set the drain flag, otherwise reset it.
|
2460 | c8457ce7 | Iustin Pop | @rtype: truple
|
2461 | c8457ce7 | Iustin Pop | @return: always True, None
|
2462 | 10c2650b | Iustin Pop | @warning: the function always returns True
|
2463 | 5d672980 | Iustin Pop |
|
2464 | 5d672980 | Iustin Pop | """
|
2465 | 5d672980 | Iustin Pop | if drain_flag:
|
2466 | 5d672980 | Iustin Pop | utils.WriteFile(constants.JOB_QUEUE_DRAIN_FILE, data="", close=True) |
2467 | 5d672980 | Iustin Pop | else:
|
2468 | 5d672980 | Iustin Pop | utils.RemoveFile(constants.JOB_QUEUE_DRAIN_FILE) |
2469 | 5d672980 | Iustin Pop | |
2470 | 5d672980 | Iustin Pop | |
2471 | 821d1bd1 | Iustin Pop | def BlockdevClose(instance_name, disks): |
2472 | d61cbe76 | Iustin Pop | """Closes the given block devices.
|
2473 | d61cbe76 | Iustin Pop |
|
2474 | 10c2650b | Iustin Pop | This means they will be switched to secondary mode (in case of
|
2475 | 10c2650b | Iustin Pop | DRBD).
|
2476 | 10c2650b | Iustin Pop |
|
2477 | b2e7666a | Iustin Pop | @param instance_name: if the argument is not empty, the symlinks
|
2478 | b2e7666a | Iustin Pop | of this instance will be removed
|
2479 | 10c2650b | Iustin Pop | @type disks: list of L{objects.Disk}
|
2480 | 10c2650b | Iustin Pop | @param disks: the list of disks to be closed
|
2481 | 10c2650b | Iustin Pop | @rtype: tuple (success, message)
|
2482 | 10c2650b | Iustin Pop | @return: a tuple of success and message, where success
|
2483 | 10c2650b | Iustin Pop | indicates the succes of the operation, and message
|
2484 | 10c2650b | Iustin Pop | which will contain the error details in case we
|
2485 | 10c2650b | Iustin Pop | failed
|
2486 | d61cbe76 | Iustin Pop |
|
2487 | d61cbe76 | Iustin Pop | """
|
2488 | d61cbe76 | Iustin Pop | bdevs = [] |
2489 | d61cbe76 | Iustin Pop | for cf in disks: |
2490 | d61cbe76 | Iustin Pop | rd = _RecursiveFindBD(cf) |
2491 | d61cbe76 | Iustin Pop | if rd is None: |
2492 | 2cc6781a | Iustin Pop | _Fail("Can't find device %s", cf)
|
2493 | d61cbe76 | Iustin Pop | bdevs.append(rd) |
2494 | d61cbe76 | Iustin Pop | |
2495 | d61cbe76 | Iustin Pop | msg = [] |
2496 | d61cbe76 | Iustin Pop | for rd in bdevs: |
2497 | d61cbe76 | Iustin Pop | try:
|
2498 | d61cbe76 | Iustin Pop | rd.Close() |
2499 | d61cbe76 | Iustin Pop | except errors.BlockDeviceError, err:
|
2500 | d61cbe76 | Iustin Pop | msg.append(str(err))
|
2501 | d61cbe76 | Iustin Pop | if msg:
|
2502 | afdc3985 | Iustin Pop | _Fail("Can't make devices secondary: %s", ",".join(msg)) |
2503 | d61cbe76 | Iustin Pop | else:
|
2504 | b2e7666a | Iustin Pop | if instance_name:
|
2505 | 5282084b | Iustin Pop | _RemoveBlockDevLinks(instance_name, disks) |
2506 | d61cbe76 | Iustin Pop | |
2507 | d61cbe76 | Iustin Pop | |
2508 | 6217e295 | Iustin Pop | def ValidateHVParams(hvname, hvparams): |
2509 | 6217e295 | Iustin Pop | """Validates the given hypervisor parameters.
|
2510 | 6217e295 | Iustin Pop |
|
2511 | 6217e295 | Iustin Pop | @type hvname: string
|
2512 | 6217e295 | Iustin Pop | @param hvname: the hypervisor name
|
2513 | 6217e295 | Iustin Pop | @type hvparams: dict
|
2514 | 6217e295 | Iustin Pop | @param hvparams: the hypervisor parameters to be validated
|
2515 | c26a6bd2 | Iustin Pop | @rtype: None
|
2516 | 6217e295 | Iustin Pop |
|
2517 | 6217e295 | Iustin Pop | """
|
2518 | 6217e295 | Iustin Pop | try:
|
2519 | 6217e295 | Iustin Pop | hv_type = hypervisor.GetHypervisor(hvname) |
2520 | 6217e295 | Iustin Pop | hv_type.ValidateParameters(hvparams) |
2521 | 6217e295 | Iustin Pop | except errors.HypervisorError, err:
|
2522 | afdc3985 | Iustin Pop | _Fail(str(err), log=False) |
2523 | 6217e295 | Iustin Pop | |
2524 | 6217e295 | Iustin Pop | |
2525 | 56aa9fd5 | Iustin Pop | def DemoteFromMC(): |
2526 | 56aa9fd5 | Iustin Pop | """Demotes the current node from master candidate role.
|
2527 | 56aa9fd5 | Iustin Pop |
|
2528 | 56aa9fd5 | Iustin Pop | """
|
2529 | 56aa9fd5 | Iustin Pop | # try to ensure we're not the master by mistake
|
2530 | 56aa9fd5 | Iustin Pop | master, myself = ssconf.GetMasterAndMyself() |
2531 | 56aa9fd5 | Iustin Pop | if master == myself:
|
2532 | afdc3985 | Iustin Pop | _Fail("ssconf status shows I'm the master node, will not demote")
|
2533 | f154a7a3 | Michael Hanselmann | |
2534 | f154a7a3 | Michael Hanselmann | result = utils.RunCmd([constants.DAEMON_UTIL, "check", constants.MASTERD])
|
2535 | f154a7a3 | Michael Hanselmann | if not result.failed: |
2536 | afdc3985 | Iustin Pop | _Fail("The master daemon is running, will not demote")
|
2537 | f154a7a3 | Michael Hanselmann | |
2538 | 56aa9fd5 | Iustin Pop | try:
|
2539 | 9a5cb537 | Iustin Pop | if os.path.isfile(constants.CLUSTER_CONF_FILE):
|
2540 | 9a5cb537 | Iustin Pop | utils.CreateBackup(constants.CLUSTER_CONF_FILE) |
2541 | 56aa9fd5 | Iustin Pop | except EnvironmentError, err: |
2542 | 56aa9fd5 | Iustin Pop | if err.errno != errno.ENOENT:
|
2543 | afdc3985 | Iustin Pop | _Fail("Error while backing up cluster file: %s", err, exc=True) |
2544 | f154a7a3 | Michael Hanselmann | |
2545 | 56aa9fd5 | Iustin Pop | utils.RemoveFile(constants.CLUSTER_CONF_FILE) |
2546 | 56aa9fd5 | Iustin Pop | |
2547 | 56aa9fd5 | Iustin Pop | |
2548 | 6b93ec9d | Iustin Pop | def _FindDisks(nodes_ip, disks): |
2549 | 6b93ec9d | Iustin Pop | """Sets the physical ID on disks and returns the block devices.
|
2550 | 6b93ec9d | Iustin Pop |
|
2551 | 6b93ec9d | Iustin Pop | """
|
2552 | 6b93ec9d | Iustin Pop | # set the correct physical ID
|
2553 | 6b93ec9d | Iustin Pop | my_name = utils.HostInfo().name |
2554 | 6b93ec9d | Iustin Pop | for cf in disks: |
2555 | 6b93ec9d | Iustin Pop | cf.SetPhysicalID(my_name, nodes_ip) |
2556 | 6b93ec9d | Iustin Pop | |
2557 | 6b93ec9d | Iustin Pop | bdevs = [] |
2558 | 6b93ec9d | Iustin Pop | |
2559 | 6b93ec9d | Iustin Pop | for cf in disks: |
2560 | 6b93ec9d | Iustin Pop | rd = _RecursiveFindBD(cf) |
2561 | 6b93ec9d | Iustin Pop | if rd is None: |
2562 | 5a533f8a | Iustin Pop | _Fail("Can't find device %s", cf)
|
2563 | 6b93ec9d | Iustin Pop | bdevs.append(rd) |
2564 | 5a533f8a | Iustin Pop | return bdevs
|
2565 | 6b93ec9d | Iustin Pop | |
2566 | 6b93ec9d | Iustin Pop | |
2567 | 6b93ec9d | Iustin Pop | def DrbdDisconnectNet(nodes_ip, disks): |
2568 | 6b93ec9d | Iustin Pop | """Disconnects the network on a list of drbd devices.
|
2569 | 6b93ec9d | Iustin Pop |
|
2570 | 6b93ec9d | Iustin Pop | """
|
2571 | 5a533f8a | Iustin Pop | bdevs = _FindDisks(nodes_ip, disks) |
2572 | 6b93ec9d | Iustin Pop | |
2573 | 6b93ec9d | Iustin Pop | # disconnect disks
|
2574 | 6b93ec9d | Iustin Pop | for rd in bdevs: |
2575 | 6b93ec9d | Iustin Pop | try:
|
2576 | 6b93ec9d | Iustin Pop | rd.DisconnectNet() |
2577 | 6b93ec9d | Iustin Pop | except errors.BlockDeviceError, err:
|
2578 | 2cc6781a | Iustin Pop | _Fail("Can't change network configuration to standalone mode: %s",
|
2579 | 2cc6781a | Iustin Pop | err, exc=True)
|
2580 | 6b93ec9d | Iustin Pop | |
2581 | 6b93ec9d | Iustin Pop | |
2582 | 6b93ec9d | Iustin Pop | def DrbdAttachNet(nodes_ip, disks, instance_name, multimaster): |
2583 | 6b93ec9d | Iustin Pop | """Attaches the network on a list of drbd devices.
|
2584 | 6b93ec9d | Iustin Pop |
|
2585 | 6b93ec9d | Iustin Pop | """
|
2586 | 5a533f8a | Iustin Pop | bdevs = _FindDisks(nodes_ip, disks) |
2587 | 6b93ec9d | Iustin Pop | |
2588 | 6b93ec9d | Iustin Pop | if multimaster:
|
2589 | 53c776b5 | Iustin Pop | for idx, rd in enumerate(bdevs): |
2590 | 6b93ec9d | Iustin Pop | try:
|
2591 | 53c776b5 | Iustin Pop | _SymlinkBlockDev(instance_name, rd.dev_path, idx) |
2592 | 6b93ec9d | Iustin Pop | except EnvironmentError, err: |
2593 | 2cc6781a | Iustin Pop | _Fail("Can't create symlink: %s", err)
|
2594 | 6b93ec9d | Iustin Pop | # reconnect disks, switch to new master configuration and if
|
2595 | 6b93ec9d | Iustin Pop | # needed primary mode
|
2596 | 6b93ec9d | Iustin Pop | for rd in bdevs: |
2597 | 6b93ec9d | Iustin Pop | try:
|
2598 | 6b93ec9d | Iustin Pop | rd.AttachNet(multimaster) |
2599 | 6b93ec9d | Iustin Pop | except errors.BlockDeviceError, err:
|
2600 | 2cc6781a | Iustin Pop | _Fail("Can't change network configuration: %s", err)
|
2601 | 3c0cdc83 | Michael Hanselmann | |
2602 | 6b93ec9d | Iustin Pop | # wait until the disks are connected; we need to retry the re-attach
|
2603 | 6b93ec9d | Iustin Pop | # if the device becomes standalone, as this might happen if the one
|
2604 | 6b93ec9d | Iustin Pop | # node disconnects and reconnects in a different mode before the
|
2605 | 6b93ec9d | Iustin Pop | # other node reconnects; in this case, one or both of the nodes will
|
2606 | 6b93ec9d | Iustin Pop | # decide it has wrong configuration and switch to standalone
|
2607 | 3c0cdc83 | Michael Hanselmann | |
2608 | 3c0cdc83 | Michael Hanselmann | def _Attach(): |
2609 | 6b93ec9d | Iustin Pop | all_connected = True
|
2610 | 3c0cdc83 | Michael Hanselmann | |
2611 | 6b93ec9d | Iustin Pop | for rd in bdevs: |
2612 | 6b93ec9d | Iustin Pop | stats = rd.GetProcStatus() |
2613 | 3c0cdc83 | Michael Hanselmann | |
2614 | 3c0cdc83 | Michael Hanselmann | all_connected = (all_connected and
|
2615 | 3c0cdc83 | Michael Hanselmann | (stats.is_connected or stats.is_in_resync))
|
2616 | 3c0cdc83 | Michael Hanselmann | |
2617 | 6b93ec9d | Iustin Pop | if stats.is_standalone:
|
2618 | 6b93ec9d | Iustin Pop | # peer had different config info and this node became
|
2619 | 6b93ec9d | Iustin Pop | # standalone, even though this should not happen with the
|
2620 | 6b93ec9d | Iustin Pop | # new staged way of changing disk configs
|
2621 | 6b93ec9d | Iustin Pop | try:
|
2622 | c738375b | Iustin Pop | rd.AttachNet(multimaster) |
2623 | 6b93ec9d | Iustin Pop | except errors.BlockDeviceError, err:
|
2624 | 2cc6781a | Iustin Pop | _Fail("Can't change network configuration: %s", err)
|
2625 | 3c0cdc83 | Michael Hanselmann | |
2626 | 3c0cdc83 | Michael Hanselmann | if not all_connected: |
2627 | 3c0cdc83 | Michael Hanselmann | raise utils.RetryAgain()
|
2628 | 3c0cdc83 | Michael Hanselmann | |
2629 | 3c0cdc83 | Michael Hanselmann | try:
|
2630 | 3c0cdc83 | Michael Hanselmann | # Start with a delay of 100 miliseconds and go up to 5 seconds
|
2631 | 3c0cdc83 | Michael Hanselmann | utils.Retry(_Attach, (0.1, 1.5, 5.0), 2 * 60) |
2632 | 3c0cdc83 | Michael Hanselmann | except utils.RetryTimeout:
|
2633 | afdc3985 | Iustin Pop | _Fail("Timeout in disk reconnecting")
|
2634 | 3c0cdc83 | Michael Hanselmann | |
2635 | 6b93ec9d | Iustin Pop | if multimaster:
|
2636 | 6b93ec9d | Iustin Pop | # change to primary mode
|
2637 | 6b93ec9d | Iustin Pop | for rd in bdevs: |
2638 | d3da87b8 | Iustin Pop | try:
|
2639 | d3da87b8 | Iustin Pop | rd.Open() |
2640 | d3da87b8 | Iustin Pop | except errors.BlockDeviceError, err:
|
2641 | 2cc6781a | Iustin Pop | _Fail("Can't change to primary mode: %s", err)
|
2642 | 6b93ec9d | Iustin Pop | |
2643 | 6b93ec9d | Iustin Pop | |
2644 | 6b93ec9d | Iustin Pop | def DrbdWaitSync(nodes_ip, disks): |
2645 | 6b93ec9d | Iustin Pop | """Wait until DRBDs have synchronized.
|
2646 | 6b93ec9d | Iustin Pop |
|
2647 | 6b93ec9d | Iustin Pop | """
|
2648 | db8667b7 | Iustin Pop | def _helper(rd): |
2649 | db8667b7 | Iustin Pop | stats = rd.GetProcStatus() |
2650 | db8667b7 | Iustin Pop | if not (stats.is_connected or stats.is_in_resync): |
2651 | db8667b7 | Iustin Pop | raise utils.RetryAgain()
|
2652 | db8667b7 | Iustin Pop | return stats
|
2653 | db8667b7 | Iustin Pop | |
2654 | 5a533f8a | Iustin Pop | bdevs = _FindDisks(nodes_ip, disks) |
2655 | 6b93ec9d | Iustin Pop | |
2656 | 6b93ec9d | Iustin Pop | min_resync = 100
|
2657 | 6b93ec9d | Iustin Pop | alldone = True
|
2658 | 6b93ec9d | Iustin Pop | for rd in bdevs: |
2659 | db8667b7 | Iustin Pop | try:
|
2660 | db8667b7 | Iustin Pop | # poll each second for 15 seconds
|
2661 | db8667b7 | Iustin Pop | stats = utils.Retry(_helper, 1, 15, args=[rd]) |
2662 | db8667b7 | Iustin Pop | except utils.RetryTimeout:
|
2663 | db8667b7 | Iustin Pop | stats = rd.GetProcStatus() |
2664 | db8667b7 | Iustin Pop | # last check
|
2665 | db8667b7 | Iustin Pop | if not (stats.is_connected or stats.is_in_resync): |
2666 | db8667b7 | Iustin Pop | _Fail("DRBD device %s is not in sync: stats=%s", rd, stats)
|
2667 | 6b93ec9d | Iustin Pop | alldone = alldone and (not stats.is_in_resync) |
2668 | 6b93ec9d | Iustin Pop | if stats.sync_percent is not None: |
2669 | 6b93ec9d | Iustin Pop | min_resync = min(min_resync, stats.sync_percent)
|
2670 | afdc3985 | Iustin Pop | |
2671 | c26a6bd2 | Iustin Pop | return (alldone, min_resync)
|
2672 | 6b93ec9d | Iustin Pop | |
2673 | 6b93ec9d | Iustin Pop | |
2674 | f5118ade | Iustin Pop | def PowercycleNode(hypervisor_type): |
2675 | f5118ade | Iustin Pop | """Hard-powercycle the node.
|
2676 | f5118ade | Iustin Pop |
|
2677 | f5118ade | Iustin Pop | Because we need to return first, and schedule the powercycle in the
|
2678 | f5118ade | Iustin Pop | background, we won't be able to report failures nicely.
|
2679 | f5118ade | Iustin Pop |
|
2680 | f5118ade | Iustin Pop | """
|
2681 | f5118ade | Iustin Pop | hyper = hypervisor.GetHypervisor(hypervisor_type) |
2682 | f5118ade | Iustin Pop | try:
|
2683 | f5118ade | Iustin Pop | pid = os.fork() |
2684 | 29921401 | Iustin Pop | except OSError: |
2685 | f5118ade | Iustin Pop | # if we can't fork, we'll pretend that we're in the child process
|
2686 | f5118ade | Iustin Pop | pid = 0
|
2687 | f5118ade | Iustin Pop | if pid > 0: |
2688 | c26a6bd2 | Iustin Pop | return "Reboot scheduled in 5 seconds" |
2689 | 1af6ac0f | Luca Bigliardi | # ensure the child is running on ram
|
2690 | 1af6ac0f | Luca Bigliardi | try:
|
2691 | 1af6ac0f | Luca Bigliardi | utils.Mlockall() |
2692 | 20601361 | Luca Bigliardi | except Exception: # pylint: disable-msg=W0703 |
2693 | 1af6ac0f | Luca Bigliardi | pass
|
2694 | f5118ade | Iustin Pop | time.sleep(5)
|
2695 | f5118ade | Iustin Pop | hyper.PowercycleNode() |
2696 | f5118ade | Iustin Pop | |
2697 | f5118ade | Iustin Pop | |
2698 | a8083063 | Iustin Pop | class HooksRunner(object): |
2699 | a8083063 | Iustin Pop | """Hook runner.
|
2700 | a8083063 | Iustin Pop |
|
2701 | 10c2650b | Iustin Pop | This class is instantiated on the node side (ganeti-noded) and not
|
2702 | 10c2650b | Iustin Pop | on the master side.
|
2703 | a8083063 | Iustin Pop |
|
2704 | a8083063 | Iustin Pop | """
|
2705 | a8083063 | Iustin Pop | def __init__(self, hooks_base_dir=None): |
2706 | a8083063 | Iustin Pop | """Constructor for hooks runner.
|
2707 | a8083063 | Iustin Pop |
|
2708 | 10c2650b | Iustin Pop | @type hooks_base_dir: str or None
|
2709 | 10c2650b | Iustin Pop | @param hooks_base_dir: if not None, this overrides the
|
2710 | 10c2650b | Iustin Pop | L{constants.HOOKS_BASE_DIR} (useful for unittests)
|
2711 | a8083063 | Iustin Pop |
|
2712 | a8083063 | Iustin Pop | """
|
2713 | a8083063 | Iustin Pop | if hooks_base_dir is None: |
2714 | a8083063 | Iustin Pop | hooks_base_dir = constants.HOOKS_BASE_DIR |
2715 | fe267188 | Iustin Pop | # yeah, _BASE_DIR is not valid for attributes, we use it like a
|
2716 | fe267188 | Iustin Pop | # constant
|
2717 | fe267188 | Iustin Pop | self._BASE_DIR = hooks_base_dir # pylint: disable-msg=C0103 |
2718 | a8083063 | Iustin Pop | |
2719 | a8083063 | Iustin Pop | def RunHooks(self, hpath, phase, env): |
2720 | a8083063 | Iustin Pop | """Run the scripts in the hooks directory.
|
2721 | a8083063 | Iustin Pop |
|
2722 | 10c2650b | Iustin Pop | @type hpath: str
|
2723 | 10c2650b | Iustin Pop | @param hpath: the path to the hooks directory which
|
2724 | 10c2650b | Iustin Pop | holds the scripts
|
2725 | 10c2650b | Iustin Pop | @type phase: str
|
2726 | 10c2650b | Iustin Pop | @param phase: either L{constants.HOOKS_PHASE_PRE} or
|
2727 | 10c2650b | Iustin Pop | L{constants.HOOKS_PHASE_POST}
|
2728 | 10c2650b | Iustin Pop | @type env: dict
|
2729 | 10c2650b | Iustin Pop | @param env: dictionary with the environment for the hook
|
2730 | 10c2650b | Iustin Pop | @rtype: list
|
2731 | 10c2650b | Iustin Pop | @return: list of 3-element tuples:
|
2732 | 10c2650b | Iustin Pop | - script path
|
2733 | 10c2650b | Iustin Pop | - script result, either L{constants.HKR_SUCCESS} or
|
2734 | 10c2650b | Iustin Pop | L{constants.HKR_FAIL}
|
2735 | 10c2650b | Iustin Pop | - output of the script
|
2736 | 10c2650b | Iustin Pop |
|
2737 | 10c2650b | Iustin Pop | @raise errors.ProgrammerError: for invalid input
|
2738 | 10c2650b | Iustin Pop | parameters
|
2739 | a8083063 | Iustin Pop |
|
2740 | a8083063 | Iustin Pop | """
|
2741 | a8083063 | Iustin Pop | if phase == constants.HOOKS_PHASE_PRE:
|
2742 | a8083063 | Iustin Pop | suffix = "pre"
|
2743 | a8083063 | Iustin Pop | elif phase == constants.HOOKS_PHASE_POST:
|
2744 | a8083063 | Iustin Pop | suffix = "post"
|
2745 | a8083063 | Iustin Pop | else:
|
2746 | 3fb4f740 | Iustin Pop | _Fail("Unknown hooks phase '%s'", phase)
|
2747 | 3fb4f740 | Iustin Pop | |
2748 | a8083063 | Iustin Pop | |
2749 | a8083063 | Iustin Pop | subdir = "%s-%s.d" % (hpath, suffix)
|
2750 | 0411c011 | Iustin Pop | dir_name = utils.PathJoin(self._BASE_DIR, subdir)
|
2751 | 6bb65e3a | Guido Trotter | |
2752 | 6bb65e3a | Guido Trotter | results = [] |
2753 | a9b7e346 | Iustin Pop | |
2754 | a9b7e346 | Iustin Pop | if not os.path.isdir(dir_name): |
2755 | a9b7e346 | Iustin Pop | # for non-existing/non-dirs, we simply exit instead of logging a
|
2756 | a9b7e346 | Iustin Pop | # warning at every operation
|
2757 | a9b7e346 | Iustin Pop | return results
|
2758 | a9b7e346 | Iustin Pop | |
2759 | a9b7e346 | Iustin Pop | runparts_results = utils.RunParts(dir_name, env=env, reset_env=True)
|
2760 | a9b7e346 | Iustin Pop | |
2761 | 6bb65e3a | Guido Trotter | for (relname, relstatus, runresult) in runparts_results: |
2762 | 6bb65e3a | Guido Trotter | if relstatus == constants.RUNPARTS_SKIP:
|
2763 | a8083063 | Iustin Pop | rrval = constants.HKR_SKIP |
2764 | a8083063 | Iustin Pop | output = ""
|
2765 | 6bb65e3a | Guido Trotter | elif relstatus == constants.RUNPARTS_ERR:
|
2766 | 6bb65e3a | Guido Trotter | rrval = constants.HKR_FAIL |
2767 | 6bb65e3a | Guido Trotter | output = "Hook script execution error: %s" % runresult
|
2768 | 6bb65e3a | Guido Trotter | elif relstatus == constants.RUNPARTS_RUN:
|
2769 | 6bb65e3a | Guido Trotter | if runresult.failed:
|
2770 | a8083063 | Iustin Pop | rrval = constants.HKR_FAIL |
2771 | a8083063 | Iustin Pop | else:
|
2772 | 6bb65e3a | Guido Trotter | rrval = constants.HKR_SUCCESS |
2773 | 6bb65e3a | Guido Trotter | output = utils.SafeEncode(runresult.output.strip()) |
2774 | 6bb65e3a | Guido Trotter | results.append(("%s/%s" % (subdir, relname), rrval, output))
|
2775 | 6bb65e3a | Guido Trotter | |
2776 | 6bb65e3a | Guido Trotter | return results
|
2777 | 3f78eef2 | Iustin Pop | |
2778 | 3f78eef2 | Iustin Pop | |
2779 | 8d528b7c | Iustin Pop | class IAllocatorRunner(object): |
2780 | 8d528b7c | Iustin Pop | """IAllocator runner.
|
2781 | 8d528b7c | Iustin Pop |
|
2782 | 8d528b7c | Iustin Pop | This class is instantiated on the node side (ganeti-noded) and not on
|
2783 | 8d528b7c | Iustin Pop | the master side.
|
2784 | 8d528b7c | Iustin Pop |
|
2785 | 8d528b7c | Iustin Pop | """
|
2786 | 7e950d31 | Iustin Pop | @staticmethod
|
2787 | 7e950d31 | Iustin Pop | def Run(name, idata): |
2788 | 8d528b7c | Iustin Pop | """Run an iallocator script.
|
2789 | 8d528b7c | Iustin Pop |
|
2790 | 10c2650b | Iustin Pop | @type name: str
|
2791 | 10c2650b | Iustin Pop | @param name: the iallocator script name
|
2792 | 10c2650b | Iustin Pop | @type idata: str
|
2793 | 10c2650b | Iustin Pop | @param idata: the allocator input data
|
2794 | 10c2650b | Iustin Pop |
|
2795 | 10c2650b | Iustin Pop | @rtype: tuple
|
2796 | 87f5c298 | Iustin Pop | @return: two element tuple of:
|
2797 | 87f5c298 | Iustin Pop | - status
|
2798 | 87f5c298 | Iustin Pop | - either error message or stdout of allocator (for success)
|
2799 | 8d528b7c | Iustin Pop |
|
2800 | 8d528b7c | Iustin Pop | """
|
2801 | 8d528b7c | Iustin Pop | alloc_script = utils.FindFile(name, constants.IALLOCATOR_SEARCH_PATH, |
2802 | 8d528b7c | Iustin Pop | os.path.isfile) |
2803 | 8d528b7c | Iustin Pop | if alloc_script is None: |
2804 | 87f5c298 | Iustin Pop | _Fail("iallocator module '%s' not found in the search path", name)
|
2805 | 8d528b7c | Iustin Pop | |
2806 | 8d528b7c | Iustin Pop | fd, fin_name = tempfile.mkstemp(prefix="ganeti-iallocator.")
|
2807 | 8d528b7c | Iustin Pop | try:
|
2808 | 8d528b7c | Iustin Pop | os.write(fd, idata) |
2809 | 8d528b7c | Iustin Pop | os.close(fd) |
2810 | 8d528b7c | Iustin Pop | result = utils.RunCmd([alloc_script, fin_name]) |
2811 | 8d528b7c | Iustin Pop | if result.failed:
|
2812 | 87f5c298 | Iustin Pop | _Fail("iallocator module '%s' failed: %s, output '%s'",
|
2813 | 87f5c298 | Iustin Pop | name, result.fail_reason, result.output) |
2814 | 8d528b7c | Iustin Pop | finally:
|
2815 | 8d528b7c | Iustin Pop | os.unlink(fin_name) |
2816 | 8d528b7c | Iustin Pop | |
2817 | c26a6bd2 | Iustin Pop | return result.stdout
|
2818 | 8d528b7c | Iustin Pop | |
2819 | 8d528b7c | Iustin Pop | |
2820 | 3f78eef2 | Iustin Pop | class DevCacheManager(object): |
2821 | c99a3cc0 | Manuel Franceschini | """Simple class for managing a cache of block device information.
|
2822 | 3f78eef2 | Iustin Pop |
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2823 | 3f78eef2 | Iustin Pop | """
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2824 | 3f78eef2 | Iustin Pop | _DEV_PREFIX = "/dev/"
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2825 | 3f78eef2 | Iustin Pop | _ROOT_DIR = constants.BDEV_CACHE_DIR |
2826 | 3f78eef2 | Iustin Pop | |
2827 | 3f78eef2 | Iustin Pop | @classmethod
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2828 | 3f78eef2 | Iustin Pop | def _ConvertPath(cls, dev_path): |
2829 | 3f78eef2 | Iustin Pop | """Converts a /dev/name path to the cache file name.
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2830 | 3f78eef2 | Iustin Pop |
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2831 | 3f78eef2 | Iustin Pop | This replaces slashes with underscores and strips the /dev
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2832 | 10c2650b | Iustin Pop | prefix. It then returns the full path to the cache file.
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2833 | 10c2650b | Iustin Pop |
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2834 | 10c2650b | Iustin Pop | @type dev_path: str
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2835 | 10c2650b | Iustin Pop | @param dev_path: the C{/dev/} path name
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2836 | 10c2650b | Iustin Pop | @rtype: str
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2837 | 10c2650b | Iustin Pop | @return: the converted path name
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2838 | 3f78eef2 | Iustin Pop |
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2839 | 3f78eef2 | Iustin Pop | """
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2840 | 3f78eef2 | Iustin Pop | if dev_path.startswith(cls._DEV_PREFIX):
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2841 | 3f78eef2 | Iustin Pop | dev_path = dev_path[len(cls._DEV_PREFIX):]
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2842 | 3f78eef2 | Iustin Pop | dev_path = dev_path.replace("/", "_") |
2843 | 0411c011 | Iustin Pop | fpath = utils.PathJoin(cls._ROOT_DIR, "bdev_%s" % dev_path)
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2844 | 3f78eef2 | Iustin Pop | return fpath
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2845 | 3f78eef2 | Iustin Pop | |
2846 | 3f78eef2 | Iustin Pop | @classmethod
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2847 | 3f78eef2 | Iustin Pop | def UpdateCache(cls, dev_path, owner, on_primary, iv_name): |
2848 | 3f78eef2 | Iustin Pop | """Updates the cache information for a given device.
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2849 | 3f78eef2 | Iustin Pop |
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2850 | 10c2650b | Iustin Pop | @type dev_path: str
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2851 | 10c2650b | Iustin Pop | @param dev_path: the pathname of the device
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2852 | 10c2650b | Iustin Pop | @type owner: str
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2853 | 10c2650b | Iustin Pop | @param owner: the owner (instance name) of the device
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2854 | 10c2650b | Iustin Pop | @type on_primary: bool
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2855 | 10c2650b | Iustin Pop | @param on_primary: whether this is the primary
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2856 | 10c2650b | Iustin Pop | node nor not
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2857 | 10c2650b | Iustin Pop | @type iv_name: str
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2858 | 10c2650b | Iustin Pop | @param iv_name: the instance-visible name of the
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2859 | c41eea6e | Iustin Pop | device, as in objects.Disk.iv_name
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2860 | 10c2650b | Iustin Pop |
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2861 | 10c2650b | Iustin Pop | @rtype: None
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2862 | 10c2650b | Iustin Pop |
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2863 | 3f78eef2 | Iustin Pop | """
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2864 | cf5a8306 | Iustin Pop | if dev_path is None: |
2865 | 18682bca | Iustin Pop | logging.error("DevCacheManager.UpdateCache got a None dev_path")
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2866 | cf5a8306 | Iustin Pop | return
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2867 | 3f78eef2 | Iustin Pop | fpath = cls._ConvertPath(dev_path) |
2868 | 3f78eef2 | Iustin Pop | if on_primary:
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2869 | 3f78eef2 | Iustin Pop | state = "primary"
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2870 | 3f78eef2 | Iustin Pop | else:
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2871 | 3f78eef2 | Iustin Pop | state = "secondary"
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2872 | 3f78eef2 | Iustin Pop | if iv_name is None: |
2873 | 3f78eef2 | Iustin Pop | iv_name = "not_visible"
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2874 | 3f78eef2 | Iustin Pop | fdata = "%s %s %s\n" % (str(owner), state, iv_name) |
2875 | 3f78eef2 | Iustin Pop | try:
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2876 | 3f78eef2 | Iustin Pop | utils.WriteFile(fpath, data=fdata) |
2877 | 3f78eef2 | Iustin Pop | except EnvironmentError, err: |
2878 | 29921401 | Iustin Pop | logging.exception("Can't update bdev cache for %s: %s", dev_path, err)
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2879 | 3f78eef2 | Iustin Pop | |
2880 | 3f78eef2 | Iustin Pop | @classmethod
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2881 | 3f78eef2 | Iustin Pop | def RemoveCache(cls, dev_path): |
2882 | 3f78eef2 | Iustin Pop | """Remove data for a dev_path.
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2883 | 3f78eef2 | Iustin Pop |
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2884 | 10c2650b | Iustin Pop | This is just a wrapper over L{utils.RemoveFile} with a converted
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2885 | 10c2650b | Iustin Pop | path name and logging.
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2886 | 10c2650b | Iustin Pop |
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2887 | 10c2650b | Iustin Pop | @type dev_path: str
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2888 | 10c2650b | Iustin Pop | @param dev_path: the pathname of the device
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2889 | 10c2650b | Iustin Pop |
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2890 | 10c2650b | Iustin Pop | @rtype: None
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2891 | 10c2650b | Iustin Pop |
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2892 | 3f78eef2 | Iustin Pop | """
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2893 | cf5a8306 | Iustin Pop | if dev_path is None: |
2894 | 18682bca | Iustin Pop | logging.error("DevCacheManager.RemoveCache got a None dev_path")
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2895 | cf5a8306 | Iustin Pop | return
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2896 | 3f78eef2 | Iustin Pop | fpath = cls._ConvertPath(dev_path) |
2897 | 3f78eef2 | Iustin Pop | try:
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2898 | 3f78eef2 | Iustin Pop | utils.RemoveFile(fpath) |
2899 | 3f78eef2 | Iustin Pop | except EnvironmentError, err: |
2900 | 29921401 | Iustin Pop | logging.exception("Can't update bdev cache for %s: %s", dev_path, err) |