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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 | 360b0dc2 | Iustin Pop |
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27 | 360b0dc2 | Iustin Pop | """
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28 | a8083063 | Iustin Pop | |
29 | a8083063 | Iustin Pop | |
30 | a8083063 | Iustin Pop | import os |
31 | a8083063 | Iustin Pop | import os.path |
32 | a8083063 | Iustin Pop | import shutil |
33 | a8083063 | Iustin Pop | import time |
34 | a8083063 | Iustin Pop | import stat |
35 | a8083063 | Iustin Pop | import errno |
36 | a8083063 | Iustin Pop | import re |
37 | a8083063 | Iustin Pop | import subprocess |
38 | b544cfe0 | Iustin Pop | import random |
39 | 18682bca | Iustin Pop | import logging |
40 | 3b9e6a30 | Iustin Pop | import tempfile |
41 | 12bce260 | Michael Hanselmann | import zlib |
42 | 12bce260 | Michael Hanselmann | import base64 |
43 | a8083063 | Iustin Pop | |
44 | a8083063 | Iustin Pop | from ganeti import errors |
45 | a8083063 | Iustin Pop | from ganeti import utils |
46 | a8083063 | Iustin Pop | from ganeti import ssh |
47 | a8083063 | Iustin Pop | from ganeti import hypervisor |
48 | a8083063 | Iustin Pop | from ganeti import constants |
49 | a8083063 | Iustin Pop | from ganeti import bdev |
50 | a8083063 | Iustin Pop | from ganeti import objects |
51 | 880478f8 | Iustin Pop | from ganeti import ssconf |
52 | a8083063 | Iustin Pop | |
53 | a8083063 | Iustin Pop | |
54 | 13998ef2 | Michael Hanselmann | _BOOT_ID_PATH = "/proc/sys/kernel/random/boot_id"
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55 | 13998ef2 | Michael Hanselmann | |
56 | 13998ef2 | Michael Hanselmann | |
57 | 2cc6781a | Iustin Pop | class RPCFail(Exception): |
58 | 2cc6781a | Iustin Pop | """Class denoting RPC failure.
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59 | 2cc6781a | Iustin Pop |
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60 | 2cc6781a | Iustin Pop | Its argument is the error message.
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61 | 2cc6781a | Iustin Pop |
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62 | 2cc6781a | Iustin Pop | """
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63 | 2cc6781a | Iustin Pop | |
64 | 13998ef2 | Michael Hanselmann | |
65 | 2cc6781a | Iustin Pop | def _Fail(msg, *args, **kwargs): |
66 | 2cc6781a | Iustin Pop | """Log an error and the raise an RPCFail exception.
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67 | 2cc6781a | Iustin Pop |
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68 | 2cc6781a | Iustin Pop | This exception is then handled specially in the ganeti daemon and
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69 | 2cc6781a | Iustin Pop | turned into a 'failed' return type. As such, this function is a
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70 | 2cc6781a | Iustin Pop | useful shortcut for logging the error and returning it to the master
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71 | 2cc6781a | Iustin Pop | daemon.
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72 | 2cc6781a | Iustin Pop |
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73 | 2cc6781a | Iustin Pop | @type msg: string
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74 | 2cc6781a | Iustin Pop | @param msg: the text of the exception
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75 | 2cc6781a | Iustin Pop | @raise RPCFail
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76 | 2cc6781a | Iustin Pop |
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77 | 2cc6781a | Iustin Pop | """
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78 | 2cc6781a | Iustin Pop | if args:
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79 | 2cc6781a | Iustin Pop | msg = msg % args |
80 | afdc3985 | Iustin Pop | if "log" not in kwargs or kwargs["log"]: # if we should log this error |
81 | afdc3985 | Iustin Pop | if "exc" in kwargs and kwargs["exc"]: |
82 | afdc3985 | Iustin Pop | logging.exception(msg) |
83 | afdc3985 | Iustin Pop | else:
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84 | afdc3985 | Iustin Pop | logging.error(msg) |
85 | 2cc6781a | Iustin Pop | raise RPCFail(msg)
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86 | 2cc6781a | Iustin Pop | |
87 | 2cc6781a | Iustin Pop | |
88 | c657dcc9 | Michael Hanselmann | def _GetConfig(): |
89 | 93384844 | Iustin Pop | """Simple wrapper to return a SimpleStore.
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90 | 10c2650b | Iustin Pop |
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91 | 93384844 | Iustin Pop | @rtype: L{ssconf.SimpleStore}
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92 | 93384844 | Iustin Pop | @return: a SimpleStore instance
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93 | 10c2650b | Iustin Pop |
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94 | 10c2650b | Iustin Pop | """
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95 | 93384844 | Iustin Pop | return ssconf.SimpleStore()
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96 | c657dcc9 | Michael Hanselmann | |
97 | c657dcc9 | Michael Hanselmann | |
98 | 62c9ec92 | Iustin Pop | def _GetSshRunner(cluster_name): |
99 | 10c2650b | Iustin Pop | """Simple wrapper to return an SshRunner.
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100 | 10c2650b | Iustin Pop |
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101 | 10c2650b | Iustin Pop | @type cluster_name: str
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102 | 10c2650b | Iustin Pop | @param cluster_name: the cluster name, which is needed
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103 | 10c2650b | Iustin Pop | by the SshRunner constructor
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104 | 10c2650b | Iustin Pop | @rtype: L{ssh.SshRunner}
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105 | 10c2650b | Iustin Pop | @return: an SshRunner instance
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106 | 10c2650b | Iustin Pop |
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107 | 10c2650b | Iustin Pop | """
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108 | 62c9ec92 | Iustin Pop | return ssh.SshRunner(cluster_name)
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109 | c92b310a | Michael Hanselmann | |
110 | c92b310a | Michael Hanselmann | |
111 | 12bce260 | Michael Hanselmann | def _Decompress(data): |
112 | 12bce260 | Michael Hanselmann | """Unpacks data compressed by the RPC client.
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113 | 12bce260 | Michael Hanselmann |
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114 | 12bce260 | Michael Hanselmann | @type data: list or tuple
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115 | 12bce260 | Michael Hanselmann | @param data: Data sent by RPC client
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116 | 12bce260 | Michael Hanselmann | @rtype: str
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117 | 12bce260 | Michael Hanselmann | @return: Decompressed data
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118 | 12bce260 | Michael Hanselmann |
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119 | 12bce260 | Michael Hanselmann | """
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120 | 52e2f66e | Michael Hanselmann | assert isinstance(data, (list, tuple)) |
121 | 12bce260 | Michael Hanselmann | assert len(data) == 2 |
122 | 12bce260 | Michael Hanselmann | (encoding, content) = data |
123 | 12bce260 | Michael Hanselmann | if encoding == constants.RPC_ENCODING_NONE:
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124 | 12bce260 | Michael Hanselmann | return content
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125 | 12bce260 | Michael Hanselmann | elif encoding == constants.RPC_ENCODING_ZLIB_BASE64:
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126 | 12bce260 | Michael Hanselmann | return zlib.decompress(base64.b64decode(content))
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127 | 12bce260 | Michael Hanselmann | else:
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128 | 12bce260 | Michael Hanselmann | raise AssertionError("Unknown data encoding") |
129 | 12bce260 | Michael Hanselmann | |
130 | 12bce260 | Michael Hanselmann | |
131 | 3bc6be5c | Iustin Pop | def _CleanDirectory(path, exclude=None): |
132 | 76ab5558 | Michael Hanselmann | """Removes all regular files in a directory.
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133 | 76ab5558 | Michael Hanselmann |
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134 | 10c2650b | Iustin Pop | @type path: str
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135 | 10c2650b | Iustin Pop | @param path: the directory to clean
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136 | 76ab5558 | Michael Hanselmann | @type exclude: list
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137 | 10c2650b | Iustin Pop | @param exclude: list of files to be excluded, defaults
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138 | 10c2650b | Iustin Pop | to the empty list
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139 | 76ab5558 | Michael Hanselmann |
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140 | 76ab5558 | Michael Hanselmann | """
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141 | 3956cee1 | Michael Hanselmann | if not os.path.isdir(path): |
142 | 3956cee1 | Michael Hanselmann | return
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143 | 3bc6be5c | Iustin Pop | if exclude is None: |
144 | 3bc6be5c | Iustin Pop | exclude = [] |
145 | 3bc6be5c | Iustin Pop | else:
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146 | 3bc6be5c | Iustin Pop | # Normalize excluded paths
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147 | 3bc6be5c | Iustin Pop | exclude = [os.path.normpath(i) for i in exclude] |
148 | 76ab5558 | Michael Hanselmann | |
149 | 3956cee1 | Michael Hanselmann | for rel_name in utils.ListVisibleFiles(path): |
150 | 76ab5558 | Michael Hanselmann | full_name = os.path.normpath(os.path.join(path, rel_name)) |
151 | 76ab5558 | Michael Hanselmann | if full_name in exclude: |
152 | 76ab5558 | Michael Hanselmann | continue
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153 | 3956cee1 | Michael Hanselmann | if os.path.isfile(full_name) and not os.path.islink(full_name): |
154 | 3956cee1 | Michael Hanselmann | utils.RemoveFile(full_name) |
155 | 3956cee1 | Michael Hanselmann | |
156 | 3956cee1 | Michael Hanselmann | |
157 | 360b0dc2 | Iustin Pop | def _BuildUploadFileList(): |
158 | 360b0dc2 | Iustin Pop | """Build the list of allowed upload files.
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159 | 360b0dc2 | Iustin Pop |
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160 | 360b0dc2 | Iustin Pop | This is abstracted so that it's built only once at module import time.
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161 | 360b0dc2 | Iustin Pop |
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162 | 360b0dc2 | Iustin Pop | """
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163 | b397a7d2 | Iustin Pop | allowed_files = set([
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164 | b397a7d2 | Iustin Pop | constants.CLUSTER_CONF_FILE, |
165 | b397a7d2 | Iustin Pop | constants.ETC_HOSTS, |
166 | b397a7d2 | Iustin Pop | constants.SSH_KNOWN_HOSTS_FILE, |
167 | b397a7d2 | Iustin Pop | constants.VNC_PASSWORD_FILE, |
168 | b397a7d2 | Iustin Pop | constants.RAPI_CERT_FILE, |
169 | b397a7d2 | Iustin Pop | constants.RAPI_USERS_FILE, |
170 | 4a34c5cf | Guido Trotter | constants.HMAC_CLUSTER_KEY, |
171 | b397a7d2 | Iustin Pop | ]) |
172 | b397a7d2 | Iustin Pop | |
173 | b397a7d2 | Iustin Pop | for hv_name in constants.HYPER_TYPES: |
174 | e5a45a16 | Iustin Pop | hv_class = hypervisor.GetHypervisorClass(hv_name) |
175 | b397a7d2 | Iustin Pop | allowed_files.update(hv_class.GetAncillaryFiles()) |
176 | b397a7d2 | Iustin Pop | |
177 | b397a7d2 | Iustin Pop | return frozenset(allowed_files) |
178 | 360b0dc2 | Iustin Pop | |
179 | 360b0dc2 | Iustin Pop | |
180 | 360b0dc2 | Iustin Pop | _ALLOWED_UPLOAD_FILES = _BuildUploadFileList() |
181 | 360b0dc2 | Iustin Pop | |
182 | 360b0dc2 | Iustin Pop | |
183 | 1bc59f76 | Michael Hanselmann | def JobQueuePurge(): |
184 | 10c2650b | Iustin Pop | """Removes job queue files and archived jobs.
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185 | 10c2650b | Iustin Pop |
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186 | c8457ce7 | Iustin Pop | @rtype: tuple
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187 | c8457ce7 | Iustin Pop | @return: True, None
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188 | 24fc781f | Michael Hanselmann |
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189 | 24fc781f | Michael Hanselmann | """
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190 | 1bc59f76 | Michael Hanselmann | _CleanDirectory(constants.QUEUE_DIR, exclude=[constants.JOB_QUEUE_LOCK_FILE]) |
191 | 24fc781f | Michael Hanselmann | _CleanDirectory(constants.JOB_QUEUE_ARCHIVE_DIR) |
192 | 24fc781f | Michael Hanselmann | |
193 | 24fc781f | Michael Hanselmann | |
194 | bd1e4562 | Iustin Pop | def GetMasterInfo(): |
195 | bd1e4562 | Iustin Pop | """Returns master information.
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196 | bd1e4562 | Iustin Pop |
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197 | bd1e4562 | Iustin Pop | This is an utility function to compute master information, either
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198 | bd1e4562 | Iustin Pop | for consumption here or from the node daemon.
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199 | bd1e4562 | Iustin Pop |
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200 | bd1e4562 | Iustin Pop | @rtype: tuple
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201 | c26a6bd2 | Iustin Pop | @return: master_netdev, master_ip, master_name
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202 | 2a52a064 | Iustin Pop | @raise RPCFail: in case of errors
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203 | b1b6ea87 | Iustin Pop |
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204 | b1b6ea87 | Iustin Pop | """
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205 | b1b6ea87 | Iustin Pop | try:
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206 | c657dcc9 | Michael Hanselmann | cfg = _GetConfig() |
207 | c657dcc9 | Michael Hanselmann | master_netdev = cfg.GetMasterNetdev() |
208 | c657dcc9 | Michael Hanselmann | master_ip = cfg.GetMasterIP() |
209 | c657dcc9 | Michael Hanselmann | master_node = cfg.GetMasterNode() |
210 | b1b6ea87 | Iustin Pop | except errors.ConfigurationError, err:
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211 | 29921401 | Iustin Pop | _Fail("Cluster configuration incomplete: %s", err, exc=True) |
212 | bd1e4562 | Iustin Pop | return (master_netdev, master_ip, master_node)
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213 | b1b6ea87 | Iustin Pop | |
214 | b1b6ea87 | Iustin Pop | |
215 | 3583908a | Guido Trotter | def StartMaster(start_daemons, no_voting): |
216 | a8083063 | Iustin Pop | """Activate local node as master node.
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217 | a8083063 | Iustin Pop |
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218 | 1c65840b | Iustin Pop | The function will always try activate the IP address of the master
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219 | 10c2650b | Iustin Pop | (unless someone else has it). It will also start the master daemons,
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220 | 10c2650b | Iustin Pop | based on the start_daemons parameter.
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221 | 10c2650b | Iustin Pop |
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222 | 10c2650b | Iustin Pop | @type start_daemons: boolean
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223 | c26a6bd2 | Iustin Pop | @param start_daemons: whether to also start the master
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224 | 10c2650b | Iustin Pop | daemons (ganeti-masterd and ganeti-rapi)
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225 | 3583908a | Guido Trotter | @type no_voting: boolean
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226 | 3583908a | Guido Trotter | @param no_voting: whether to start ganeti-masterd without a node vote
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227 | 3583908a | Guido Trotter | (if start_daemons is True), but still non-interactively
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228 | 10c2650b | Iustin Pop | @rtype: None
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229 | a8083063 | Iustin Pop |
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230 | a8083063 | Iustin Pop | """
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231 | 2a52a064 | Iustin Pop | # GetMasterInfo will raise an exception if not able to return data
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232 | 541741d3 | Guido Trotter | master_netdev, master_ip, _ = GetMasterInfo() |
233 | a8083063 | Iustin Pop | |
234 | 396b5733 | Iustin Pop | err_msgs = [] |
235 | b1b6ea87 | Iustin Pop | if utils.TcpPing(master_ip, constants.DEFAULT_NODED_PORT):
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236 | caad16e2 | Iustin Pop | if utils.OwnIpAddress(master_ip):
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237 | b1b6ea87 | Iustin Pop | # we already have the ip:
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238 | b726aff0 | Iustin Pop | logging.debug("Master IP already configured, doing nothing")
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239 | b1b6ea87 | Iustin Pop | else:
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240 | b726aff0 | Iustin Pop | msg = "Someone else has the master ip, not activating"
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241 | b726aff0 | Iustin Pop | logging.error(msg) |
242 | 396b5733 | Iustin Pop | err_msgs.append(msg) |
243 | b1b6ea87 | Iustin Pop | else:
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244 | b1b6ea87 | Iustin Pop | result = utils.RunCmd(["ip", "address", "add", "%s/32" % master_ip, |
245 | b1b6ea87 | Iustin Pop | "dev", master_netdev, "label", |
246 | b1b6ea87 | Iustin Pop | "%s:0" % master_netdev])
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247 | b1b6ea87 | Iustin Pop | if result.failed:
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248 | b726aff0 | Iustin Pop | msg = "Can't activate master IP: %s" % result.output
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249 | b726aff0 | Iustin Pop | logging.error(msg) |
250 | 396b5733 | Iustin Pop | err_msgs.append(msg) |
251 | b1b6ea87 | Iustin Pop | |
252 | b1b6ea87 | Iustin Pop | result = utils.RunCmd(["arping", "-q", "-U", "-c 3", "-I", master_netdev, |
253 | b1b6ea87 | Iustin Pop | "-s", master_ip, master_ip])
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254 | b1b6ea87 | Iustin Pop | # we'll ignore the exit code of arping
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255 | b1b6ea87 | Iustin Pop | |
256 | b1b6ea87 | Iustin Pop | # and now start the master and rapi daemons
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257 | b1b6ea87 | Iustin Pop | if start_daemons:
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258 | 3583908a | Guido Trotter | daemons_params = { |
259 | 3583908a | Guido Trotter | 'ganeti-masterd': [],
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260 | 3583908a | Guido Trotter | 'ganeti-rapi': [],
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261 | 3583908a | Guido Trotter | } |
262 | 3583908a | Guido Trotter | if no_voting:
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263 | 3583908a | Guido Trotter | daemons_params['ganeti-masterd'].append('--no-voting') |
264 | 3583908a | Guido Trotter | daemons_params['ganeti-masterd'].append('--yes-do-it') |
265 | 3583908a | Guido Trotter | for daemon in daemons_params: |
266 | 3583908a | Guido Trotter | cmd = [daemon] |
267 | 3583908a | Guido Trotter | cmd.extend(daemons_params[daemon]) |
268 | 3583908a | Guido Trotter | result = utils.RunCmd(cmd) |
269 | b1b6ea87 | Iustin Pop | if result.failed:
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270 | b726aff0 | Iustin Pop | msg = "Can't start daemon %s: %s" % (daemon, result.output)
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271 | b726aff0 | Iustin Pop | logging.error(msg) |
272 | 396b5733 | Iustin Pop | err_msgs.append(msg) |
273 | b726aff0 | Iustin Pop | |
274 | 396b5733 | Iustin Pop | if err_msgs:
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275 | 396b5733 | Iustin Pop | _Fail("; ".join(err_msgs))
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276 | afdc3985 | Iustin Pop | |
277 | a8083063 | Iustin Pop | |
278 | 1c65840b | Iustin Pop | def StopMaster(stop_daemons): |
279 | a8083063 | Iustin Pop | """Deactivate this node as master.
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280 | a8083063 | Iustin Pop |
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281 | 1c65840b | Iustin Pop | The function will always try to deactivate the IP address of the
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282 | 10c2650b | Iustin Pop | master. It will also stop the master daemons depending on the
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283 | 10c2650b | Iustin Pop | stop_daemons parameter.
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284 | 10c2650b | Iustin Pop |
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285 | 10c2650b | Iustin Pop | @type stop_daemons: boolean
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286 | 10c2650b | Iustin Pop | @param stop_daemons: whether to also stop the master daemons
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287 | 10c2650b | Iustin Pop | (ganeti-masterd and ganeti-rapi)
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288 | 10c2650b | Iustin Pop | @rtype: None
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289 | a8083063 | Iustin Pop |
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290 | a8083063 | Iustin Pop | """
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291 | 6c00d19a | Iustin Pop | # TODO: log and report back to the caller the error failures; we
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292 | 6c00d19a | Iustin Pop | # need to decide in which case we fail the RPC for this
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293 | 2a52a064 | Iustin Pop | |
294 | 2a52a064 | Iustin Pop | # GetMasterInfo will raise an exception if not able to return data
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295 | 541741d3 | Guido Trotter | master_netdev, master_ip, _ = GetMasterInfo() |
296 | a8083063 | Iustin Pop | |
297 | b1b6ea87 | Iustin Pop | result = utils.RunCmd(["ip", "address", "del", "%s/32" % master_ip, |
298 | b1b6ea87 | Iustin Pop | "dev", master_netdev])
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299 | a8083063 | Iustin Pop | if result.failed:
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300 | 3b9e6a30 | Iustin Pop | logging.error("Can't remove the master IP, error: %s", result.output)
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301 | b1b6ea87 | Iustin Pop | # but otherwise ignore the failure
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302 | b1b6ea87 | Iustin Pop | |
303 | b1b6ea87 | Iustin Pop | if stop_daemons:
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304 | b1b6ea87 | Iustin Pop | # stop/kill the rapi and the master daemon
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305 | 83052f9e | Guido Trotter | for daemon in constants.RAPI, constants.MASTERD: |
306 | b1b6ea87 | Iustin Pop | utils.KillProcess(utils.ReadPidFile(utils.DaemonPidFileName(daemon))) |
307 | a8083063 | Iustin Pop | |
308 | a8083063 | Iustin Pop | |
309 | 9716fdce | Iustin Pop | def AddNode(dsa, dsapub, rsa, rsapub, sshkey, sshpub): |
310 | 7900ed01 | Iustin Pop | """Joins this node to the cluster.
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311 | a8083063 | Iustin Pop |
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312 | 7900ed01 | Iustin Pop | This does the following:
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313 | 7900ed01 | Iustin Pop | - updates the hostkeys of the machine (rsa and dsa)
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314 | 7900ed01 | Iustin Pop | - adds the ssh private key to the user
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315 | 7900ed01 | Iustin Pop | - adds the ssh public key to the users' authorized_keys file
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316 | a8083063 | Iustin Pop |
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317 | 10c2650b | Iustin Pop | @type dsa: str
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318 | 10c2650b | Iustin Pop | @param dsa: the DSA private key to write
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319 | 10c2650b | Iustin Pop | @type dsapub: str
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320 | 10c2650b | Iustin Pop | @param dsapub: the DSA public key to write
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321 | 10c2650b | Iustin Pop | @type rsa: str
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322 | 10c2650b | Iustin Pop | @param rsa: the RSA private key to write
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323 | 10c2650b | Iustin Pop | @type rsapub: str
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324 | 10c2650b | Iustin Pop | @param rsapub: the RSA public key to write
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325 | 10c2650b | Iustin Pop | @type sshkey: str
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326 | 10c2650b | Iustin Pop | @param sshkey: the SSH private key to write
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327 | 10c2650b | Iustin Pop | @type sshpub: str
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328 | 10c2650b | Iustin Pop | @param sshpub: the SSH public key to write
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329 | 10c2650b | Iustin Pop | @rtype: boolean
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330 | 10c2650b | Iustin Pop | @return: the success of the operation
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331 | 10c2650b | Iustin Pop |
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332 | 7900ed01 | Iustin Pop | """
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333 | 70d9e3d8 | Iustin Pop | sshd_keys = [(constants.SSH_HOST_RSA_PRIV, rsa, 0600),
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334 | 70d9e3d8 | Iustin Pop | (constants.SSH_HOST_RSA_PUB, rsapub, 0644),
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335 | 70d9e3d8 | Iustin Pop | (constants.SSH_HOST_DSA_PRIV, dsa, 0600),
|
336 | 70d9e3d8 | Iustin Pop | (constants.SSH_HOST_DSA_PUB, dsapub, 0644)]
|
337 | 7900ed01 | Iustin Pop | for name, content, mode in sshd_keys: |
338 | 70d9e3d8 | Iustin Pop | utils.WriteFile(name, data=content, mode=mode) |
339 | a8083063 | Iustin Pop | |
340 | 70d9e3d8 | Iustin Pop | try:
|
341 | 70d9e3d8 | Iustin Pop | priv_key, pub_key, auth_keys = ssh.GetUserFiles(constants.GANETI_RUNAS, |
342 | 70d9e3d8 | Iustin Pop | mkdir=True)
|
343 | 70d9e3d8 | Iustin Pop | except errors.OpExecError, err:
|
344 | 2cc6781a | Iustin Pop | _Fail("Error while processing user ssh files: %s", err, exc=True) |
345 | a8083063 | Iustin Pop | |
346 | 70d9e3d8 | Iustin Pop | for name, content in [(priv_key, sshkey), (pub_key, sshpub)]: |
347 | 70d9e3d8 | Iustin Pop | utils.WriteFile(name, data=content, mode=0600)
|
348 | a8083063 | Iustin Pop | |
349 | 70d9e3d8 | Iustin Pop | utils.AddAuthorizedKey(auth_keys, sshpub) |
350 | a8083063 | Iustin Pop | |
351 | f491c3a8 | Michael Hanselmann | utils.RunCmd([constants.SSH_INITD_SCRIPT, "restart"])
|
352 | a8083063 | Iustin Pop | |
353 | a8083063 | Iustin Pop | |
354 | a8083063 | Iustin Pop | def LeaveCluster(): |
355 | 10c2650b | Iustin Pop | """Cleans up and remove the current node.
|
356 | 10c2650b | Iustin Pop |
|
357 | 10c2650b | Iustin Pop | This function cleans up and prepares the current node to be removed
|
358 | 10c2650b | Iustin Pop | from the cluster.
|
359 | 10c2650b | Iustin Pop |
|
360 | 10c2650b | Iustin Pop | If processing is successful, then it raises an
|
361 | c41eea6e | Iustin Pop | L{errors.QuitGanetiException} which is used as a special case to
|
362 | 10c2650b | Iustin Pop | shutdown the node daemon.
|
363 | a8083063 | Iustin Pop |
|
364 | a8083063 | Iustin Pop | """
|
365 | f78346f5 | Michael Hanselmann | _CleanDirectory(constants.DATA_DIR) |
366 | 1bc59f76 | Michael Hanselmann | JobQueuePurge() |
367 | f78346f5 | Michael Hanselmann | |
368 | 70d9e3d8 | Iustin Pop | try:
|
369 | 70d9e3d8 | Iustin Pop | priv_key, pub_key, auth_keys = ssh.GetUserFiles(constants.GANETI_RUNAS) |
370 | 7900ed01 | Iustin Pop | |
371 | 13998ef2 | Michael Hanselmann | utils.RemoveAuthorizedKey(auth_keys, utils.ReadFile(pub_key)) |
372 | a8083063 | Iustin Pop | |
373 | 0623d351 | Iustin Pop | utils.RemoveFile(priv_key) |
374 | 0623d351 | Iustin Pop | utils.RemoveFile(pub_key) |
375 | 0623d351 | Iustin Pop | except errors.OpExecError:
|
376 | 0623d351 | Iustin Pop | logging.exception("Error while processing ssh files")
|
377 | a8083063 | Iustin Pop | |
378 | ed008420 | Guido Trotter | try:
|
379 | ed008420 | Guido Trotter | utils.RemoveFile(constants.HMAC_CLUSTER_KEY) |
380 | ed008420 | Guido Trotter | utils.RemoveFile(constants.RAPI_CERT_FILE) |
381 | ed008420 | Guido Trotter | utils.RemoveFile(constants.SSL_CERT_FILE) |
382 | ed008420 | Guido Trotter | except:
|
383 | ed008420 | Guido Trotter | logging.exception("Error while removing cluster secrets")
|
384 | ed008420 | Guido Trotter | |
385 | ed008420 | Guido Trotter | confd_pid = utils.ReadPidFile(utils.DaemonPidFileName(constants.CONFD)) |
386 | ed008420 | Guido Trotter | |
387 | ed008420 | Guido Trotter | if confd_pid:
|
388 | ed008420 | Guido Trotter | utils.KillProcess(confd_pid, timeout=2)
|
389 | ed008420 | Guido Trotter | |
390 | 0623d351 | Iustin Pop | # Raise a custom exception (handled in ganeti-noded)
|
391 | 0623d351 | Iustin Pop | raise errors.QuitGanetiException(True, 'Shutdown scheduled') |
392 | 6d8b6238 | Guido Trotter | |
393 | a8083063 | Iustin Pop | |
394 | e69d05fd | Iustin Pop | def GetNodeInfo(vgname, hypervisor_type): |
395 | 5bbd3f7f | Michael Hanselmann | """Gives back a hash with different information about the node.
|
396 | a8083063 | Iustin Pop |
|
397 | e69d05fd | Iustin Pop | @type vgname: C{string}
|
398 | e69d05fd | Iustin Pop | @param vgname: the name of the volume group to ask for disk space information
|
399 | e69d05fd | Iustin Pop | @type hypervisor_type: C{str}
|
400 | e69d05fd | Iustin Pop | @param hypervisor_type: the name of the hypervisor to ask for
|
401 | e69d05fd | Iustin Pop | memory information
|
402 | e69d05fd | Iustin Pop | @rtype: C{dict}
|
403 | e69d05fd | Iustin Pop | @return: dictionary with the following keys:
|
404 | e69d05fd | Iustin Pop | - vg_size is the size of the configured volume group in MiB
|
405 | e69d05fd | Iustin Pop | - vg_free is the free size of the volume group in MiB
|
406 | e69d05fd | Iustin Pop | - memory_dom0 is the memory allocated for domain0 in MiB
|
407 | e69d05fd | Iustin Pop | - memory_free is the currently available (free) ram in MiB
|
408 | e69d05fd | Iustin Pop | - memory_total is the total number of ram in MiB
|
409 | a8083063 | Iustin Pop |
|
410 | 098c0958 | Michael Hanselmann | """
|
411 | a8083063 | Iustin Pop | outputarray = {} |
412 | a8083063 | Iustin Pop | vginfo = _GetVGInfo(vgname) |
413 | a8083063 | Iustin Pop | outputarray['vg_size'] = vginfo['vg_size'] |
414 | a8083063 | Iustin Pop | outputarray['vg_free'] = vginfo['vg_free'] |
415 | a8083063 | Iustin Pop | |
416 | e69d05fd | Iustin Pop | hyper = hypervisor.GetHypervisor(hypervisor_type) |
417 | a8083063 | Iustin Pop | hyp_info = hyper.GetNodeInfo() |
418 | a8083063 | Iustin Pop | if hyp_info is not None: |
419 | a8083063 | Iustin Pop | outputarray.update(hyp_info) |
420 | a8083063 | Iustin Pop | |
421 | 13998ef2 | Michael Hanselmann | outputarray["bootid"] = utils.ReadFile(_BOOT_ID_PATH, size=128).rstrip("\n") |
422 | 3ef10550 | Michael Hanselmann | |
423 | c26a6bd2 | Iustin Pop | return outputarray
|
424 | a8083063 | Iustin Pop | |
425 | a8083063 | Iustin Pop | |
426 | 62c9ec92 | Iustin Pop | def VerifyNode(what, cluster_name): |
427 | a8083063 | Iustin Pop | """Verify the status of the local node.
|
428 | a8083063 | Iustin Pop |
|
429 | e69d05fd | Iustin Pop | Based on the input L{what} parameter, various checks are done on the
|
430 | e69d05fd | Iustin Pop | local node.
|
431 | e69d05fd | Iustin Pop |
|
432 | e69d05fd | Iustin Pop | If the I{filelist} key is present, this list of
|
433 | e69d05fd | Iustin Pop | files is checksummed and the file/checksum pairs are returned.
|
434 | e69d05fd | Iustin Pop |
|
435 | e69d05fd | Iustin Pop | If the I{nodelist} key is present, we check that we have
|
436 | e69d05fd | Iustin Pop | connectivity via ssh with the target nodes (and check the hostname
|
437 | e69d05fd | Iustin Pop | report).
|
438 | a8083063 | Iustin Pop |
|
439 | e69d05fd | Iustin Pop | If the I{node-net-test} key is present, we check that we have
|
440 | e69d05fd | Iustin Pop | connectivity to the given nodes via both primary IP and, if
|
441 | e69d05fd | Iustin Pop | applicable, secondary IPs.
|
442 | e69d05fd | Iustin Pop |
|
443 | e69d05fd | Iustin Pop | @type what: C{dict}
|
444 | e69d05fd | Iustin Pop | @param what: a dictionary of things to check:
|
445 | e69d05fd | Iustin Pop | - filelist: list of files for which to compute checksums
|
446 | e69d05fd | Iustin Pop | - nodelist: list of nodes we should check ssh communication with
|
447 | e69d05fd | Iustin Pop | - node-net-test: list of nodes we should check node daemon port
|
448 | e69d05fd | Iustin Pop | connectivity with
|
449 | e69d05fd | Iustin Pop | - hypervisor: list with hypervisors to run the verify for
|
450 | 10c2650b | Iustin Pop | @rtype: dict
|
451 | 10c2650b | Iustin Pop | @return: a dictionary with the same keys as the input dict, and
|
452 | 10c2650b | Iustin Pop | values representing the result of the checks
|
453 | a8083063 | Iustin Pop |
|
454 | a8083063 | Iustin Pop | """
|
455 | a8083063 | Iustin Pop | result = {} |
456 | a8083063 | Iustin Pop | |
457 | 25361b9a | Iustin Pop | if constants.NV_HYPERVISOR in what: |
458 | 25361b9a | Iustin Pop | result[constants.NV_HYPERVISOR] = tmp = {} |
459 | 25361b9a | Iustin Pop | for hv_name in what[constants.NV_HYPERVISOR]: |
460 | 25361b9a | Iustin Pop | tmp[hv_name] = hypervisor.GetHypervisor(hv_name).Verify() |
461 | 25361b9a | Iustin Pop | |
462 | 25361b9a | Iustin Pop | if constants.NV_FILELIST in what: |
463 | 25361b9a | Iustin Pop | result[constants.NV_FILELIST] = utils.FingerprintFiles( |
464 | 25361b9a | Iustin Pop | what[constants.NV_FILELIST]) |
465 | 25361b9a | Iustin Pop | |
466 | 25361b9a | Iustin Pop | if constants.NV_NODELIST in what: |
467 | 25361b9a | Iustin Pop | result[constants.NV_NODELIST] = tmp = {} |
468 | 25361b9a | Iustin Pop | random.shuffle(what[constants.NV_NODELIST]) |
469 | 25361b9a | Iustin Pop | for node in what[constants.NV_NODELIST]: |
470 | 62c9ec92 | Iustin Pop | success, message = _GetSshRunner(cluster_name).VerifyNodeHostname(node) |
471 | a8083063 | Iustin Pop | if not success: |
472 | 25361b9a | Iustin Pop | tmp[node] = message |
473 | 25361b9a | Iustin Pop | |
474 | 25361b9a | Iustin Pop | if constants.NV_NODENETTEST in what: |
475 | 25361b9a | Iustin Pop | result[constants.NV_NODENETTEST] = tmp = {} |
476 | 9d4bfc96 | Iustin Pop | my_name = utils.HostInfo().name |
477 | 9d4bfc96 | Iustin Pop | my_pip = my_sip = None
|
478 | 25361b9a | Iustin Pop | for name, pip, sip in what[constants.NV_NODENETTEST]: |
479 | 9d4bfc96 | Iustin Pop | if name == my_name:
|
480 | 9d4bfc96 | Iustin Pop | my_pip = pip |
481 | 9d4bfc96 | Iustin Pop | my_sip = sip |
482 | 9d4bfc96 | Iustin Pop | break
|
483 | 9d4bfc96 | Iustin Pop | if not my_pip: |
484 | 25361b9a | Iustin Pop | tmp[my_name] = ("Can't find my own primary/secondary IP"
|
485 | 25361b9a | Iustin Pop | " in the node list")
|
486 | 9d4bfc96 | Iustin Pop | else:
|
487 | cd50653c | Guido Trotter | port = utils.GetDaemonPort(constants.NODED) |
488 | 25361b9a | Iustin Pop | for name, pip, sip in what[constants.NV_NODENETTEST]: |
489 | 9d4bfc96 | Iustin Pop | fail = [] |
490 | 9d4bfc96 | Iustin Pop | if not utils.TcpPing(pip, port, source=my_pip): |
491 | 9d4bfc96 | Iustin Pop | fail.append("primary")
|
492 | 9d4bfc96 | Iustin Pop | if sip != pip:
|
493 | 9d4bfc96 | Iustin Pop | if not utils.TcpPing(sip, port, source=my_sip): |
494 | 9d4bfc96 | Iustin Pop | fail.append("secondary")
|
495 | 9d4bfc96 | Iustin Pop | if fail:
|
496 | 25361b9a | Iustin Pop | tmp[name] = ("failure using the %s interface(s)" %
|
497 | 25361b9a | Iustin Pop | " and ".join(fail))
|
498 | 25361b9a | Iustin Pop | |
499 | 25361b9a | Iustin Pop | if constants.NV_LVLIST in what: |
500 | 25361b9a | Iustin Pop | result[constants.NV_LVLIST] = GetVolumeList(what[constants.NV_LVLIST]) |
501 | 25361b9a | Iustin Pop | |
502 | 25361b9a | Iustin Pop | if constants.NV_INSTANCELIST in what: |
503 | 25361b9a | Iustin Pop | result[constants.NV_INSTANCELIST] = GetInstanceList( |
504 | 25361b9a | Iustin Pop | what[constants.NV_INSTANCELIST]) |
505 | 25361b9a | Iustin Pop | |
506 | 25361b9a | Iustin Pop | if constants.NV_VGLIST in what: |
507 | e480923b | Iustin Pop | result[constants.NV_VGLIST] = utils.ListVolumeGroups() |
508 | 25361b9a | Iustin Pop | |
509 | 25361b9a | Iustin Pop | if constants.NV_VERSION in what: |
510 | e9ce0a64 | Iustin Pop | result[constants.NV_VERSION] = (constants.PROTOCOL_VERSION, |
511 | e9ce0a64 | Iustin Pop | constants.RELEASE_VERSION) |
512 | 25361b9a | Iustin Pop | |
513 | 25361b9a | Iustin Pop | if constants.NV_HVINFO in what: |
514 | 25361b9a | Iustin Pop | hyper = hypervisor.GetHypervisor(what[constants.NV_HVINFO]) |
515 | 25361b9a | Iustin Pop | result[constants.NV_HVINFO] = hyper.GetNodeInfo() |
516 | 9d4bfc96 | Iustin Pop | |
517 | 6d2e83d5 | Iustin Pop | if constants.NV_DRBDLIST in what: |
518 | 6d2e83d5 | Iustin Pop | try:
|
519 | 6d2e83d5 | Iustin Pop | used_minors = bdev.DRBD8.GetUsedDevs().keys() |
520 | f6eaed12 | Iustin Pop | except errors.BlockDeviceError, err:
|
521 | 6d2e83d5 | Iustin Pop | logging.warning("Can't get used minors list", exc_info=True) |
522 | f6eaed12 | Iustin Pop | used_minors = str(err)
|
523 | 6d2e83d5 | Iustin Pop | result[constants.NV_DRBDLIST] = used_minors |
524 | 6d2e83d5 | Iustin Pop | |
525 | c26a6bd2 | Iustin Pop | return result
|
526 | a8083063 | Iustin Pop | |
527 | a8083063 | Iustin Pop | |
528 | a8083063 | Iustin Pop | def GetVolumeList(vg_name): |
529 | a8083063 | Iustin Pop | """Compute list of logical volumes and their size.
|
530 | a8083063 | Iustin Pop |
|
531 | 10c2650b | Iustin Pop | @type vg_name: str
|
532 | 10c2650b | Iustin Pop | @param vg_name: the volume group whose LVs we should list
|
533 | 10c2650b | Iustin Pop | @rtype: dict
|
534 | 10c2650b | Iustin Pop | @return:
|
535 | 10c2650b | Iustin Pop | dictionary of all partions (key) with value being a tuple of
|
536 | 10c2650b | Iustin Pop | their size (in MiB), inactive and online status::
|
537 | 10c2650b | Iustin Pop |
|
538 | 10c2650b | Iustin Pop | {'test1': ('20.06', True, True)}
|
539 | 10c2650b | Iustin Pop |
|
540 | 10c2650b | Iustin Pop | in case of errors, a string is returned with the error
|
541 | 10c2650b | Iustin Pop | details.
|
542 | a8083063 | Iustin Pop |
|
543 | a8083063 | Iustin Pop | """
|
544 | cb2037a2 | Iustin Pop | lvs = {} |
545 | cb2037a2 | Iustin Pop | sep = '|'
|
546 | cb2037a2 | Iustin Pop | result = utils.RunCmd(["lvs", "--noheadings", "--units=m", "--nosuffix", |
547 | cb2037a2 | Iustin Pop | "--separator=%s" % sep,
|
548 | cb2037a2 | Iustin Pop | "-olv_name,lv_size,lv_attr", vg_name])
|
549 | a8083063 | Iustin Pop | if result.failed:
|
550 | 29d376ec | Iustin Pop | _Fail("Failed to list logical volumes, lvs output: %s", result.output)
|
551 | cb2037a2 | Iustin Pop | |
552 | df4c2628 | Iustin Pop | valid_line_re = re.compile("^ *([^|]+)\|([0-9.]+)\|([^|]{6})\|?$")
|
553 | cb2037a2 | Iustin Pop | for line in result.stdout.splitlines(): |
554 | df4c2628 | Iustin Pop | line = line.strip() |
555 | df4c2628 | Iustin Pop | match = valid_line_re.match(line) |
556 | df4c2628 | Iustin Pop | if not match: |
557 | 18682bca | Iustin Pop | logging.error("Invalid line returned from lvs output: '%s'", line)
|
558 | df4c2628 | Iustin Pop | continue
|
559 | df4c2628 | Iustin Pop | name, size, attr = match.groups() |
560 | cb2037a2 | Iustin Pop | inactive = attr[4] == '-' |
561 | cb2037a2 | Iustin Pop | online = attr[5] == 'o' |
562 | 33f2a81a | Iustin Pop | virtual = attr[0] == 'v' |
563 | 33f2a81a | Iustin Pop | if virtual:
|
564 | 33f2a81a | Iustin Pop | # we don't want to report such volumes as existing, since they
|
565 | 33f2a81a | Iustin Pop | # don't really hold data
|
566 | 33f2a81a | Iustin Pop | continue
|
567 | cb2037a2 | Iustin Pop | lvs[name] = (size, inactive, online) |
568 | cb2037a2 | Iustin Pop | |
569 | cb2037a2 | Iustin Pop | return lvs
|
570 | a8083063 | Iustin Pop | |
571 | a8083063 | Iustin Pop | |
572 | a8083063 | Iustin Pop | def ListVolumeGroups(): |
573 | 2f8598a5 | Alexander Schreiber | """List the volume groups and their size.
|
574 | a8083063 | Iustin Pop |
|
575 | 10c2650b | Iustin Pop | @rtype: dict
|
576 | 10c2650b | Iustin Pop | @return: dictionary with keys volume name and values the
|
577 | 10c2650b | Iustin Pop | size of the volume
|
578 | a8083063 | Iustin Pop |
|
579 | a8083063 | Iustin Pop | """
|
580 | c26a6bd2 | Iustin Pop | return utils.ListVolumeGroups()
|
581 | a8083063 | Iustin Pop | |
582 | a8083063 | Iustin Pop | |
583 | dcb93971 | Michael Hanselmann | def NodeVolumes(): |
584 | dcb93971 | Michael Hanselmann | """List all volumes on this node.
|
585 | dcb93971 | Michael Hanselmann |
|
586 | 10c2650b | Iustin Pop | @rtype: list
|
587 | 10c2650b | Iustin Pop | @return:
|
588 | 10c2650b | Iustin Pop | A list of dictionaries, each having four keys:
|
589 | 10c2650b | Iustin Pop | - name: the logical volume name,
|
590 | 10c2650b | Iustin Pop | - size: the size of the logical volume
|
591 | 10c2650b | Iustin Pop | - dev: the physical device on which the LV lives
|
592 | 10c2650b | Iustin Pop | - vg: the volume group to which it belongs
|
593 | 10c2650b | Iustin Pop |
|
594 | 10c2650b | Iustin Pop | In case of errors, we return an empty list and log the
|
595 | 10c2650b | Iustin Pop | error.
|
596 | 10c2650b | Iustin Pop |
|
597 | 10c2650b | Iustin Pop | Note that since a logical volume can live on multiple physical
|
598 | 10c2650b | Iustin Pop | volumes, the resulting list might include a logical volume
|
599 | 10c2650b | Iustin Pop | multiple times.
|
600 | 10c2650b | Iustin Pop |
|
601 | dcb93971 | Michael Hanselmann | """
|
602 | dcb93971 | Michael Hanselmann | result = utils.RunCmd(["lvs", "--noheadings", "--units=m", "--nosuffix", |
603 | dcb93971 | Michael Hanselmann | "--separator=|",
|
604 | dcb93971 | Michael Hanselmann | "--options=lv_name,lv_size,devices,vg_name"])
|
605 | dcb93971 | Michael Hanselmann | if result.failed:
|
606 | 10bfe6cb | Iustin Pop | _Fail("Failed to list logical volumes, lvs output: %s",
|
607 | 10bfe6cb | Iustin Pop | result.output) |
608 | dcb93971 | Michael Hanselmann | |
609 | dcb93971 | Michael Hanselmann | def parse_dev(dev): |
610 | dcb93971 | Michael Hanselmann | if '(' in dev: |
611 | dcb93971 | Michael Hanselmann | return dev.split('(')[0] |
612 | dcb93971 | Michael Hanselmann | else:
|
613 | dcb93971 | Michael Hanselmann | return dev
|
614 | dcb93971 | Michael Hanselmann | |
615 | dcb93971 | Michael Hanselmann | def map_line(line): |
616 | dcb93971 | Michael Hanselmann | return {
|
617 | dcb93971 | Michael Hanselmann | 'name': line[0].strip(), |
618 | dcb93971 | Michael Hanselmann | 'size': line[1].strip(), |
619 | dcb93971 | Michael Hanselmann | 'dev': parse_dev(line[2].strip()), |
620 | dcb93971 | Michael Hanselmann | 'vg': line[3].strip(), |
621 | dcb93971 | Michael Hanselmann | } |
622 | dcb93971 | Michael Hanselmann | |
623 | c26a6bd2 | Iustin Pop | return [map_line(line.split('|')) for line in result.stdout.splitlines() |
624 | c26a6bd2 | Iustin Pop | if line.count('|') >= 3] |
625 | dcb93971 | Michael Hanselmann | |
626 | dcb93971 | Michael Hanselmann | |
627 | a8083063 | Iustin Pop | def BridgesExist(bridges_list): |
628 | 2f8598a5 | Alexander Schreiber | """Check if a list of bridges exist on the current node.
|
629 | a8083063 | Iustin Pop |
|
630 | b1206984 | Iustin Pop | @rtype: boolean
|
631 | b1206984 | Iustin Pop | @return: C{True} if all of them exist, C{False} otherwise
|
632 | a8083063 | Iustin Pop |
|
633 | a8083063 | Iustin Pop | """
|
634 | 35c0c8da | Iustin Pop | missing = [] |
635 | a8083063 | Iustin Pop | for bridge in bridges_list: |
636 | a8083063 | Iustin Pop | if not utils.BridgeExists(bridge): |
637 | 35c0c8da | Iustin Pop | missing.append(bridge) |
638 | a8083063 | Iustin Pop | |
639 | 35c0c8da | Iustin Pop | if missing:
|
640 | afdc3985 | Iustin Pop | _Fail("Missing bridges %s", ", ".join(missing)) |
641 | 35c0c8da | Iustin Pop | |
642 | a8083063 | Iustin Pop | |
643 | e69d05fd | Iustin Pop | def GetInstanceList(hypervisor_list): |
644 | 2f8598a5 | Alexander Schreiber | """Provides a list of instances.
|
645 | a8083063 | Iustin Pop |
|
646 | e69d05fd | Iustin Pop | @type hypervisor_list: list
|
647 | e69d05fd | Iustin Pop | @param hypervisor_list: the list of hypervisors to query information
|
648 | e69d05fd | Iustin Pop |
|
649 | e69d05fd | Iustin Pop | @rtype: list
|
650 | e69d05fd | Iustin Pop | @return: a list of all running instances on the current node
|
651 | 10c2650b | Iustin Pop | - instance1.example.com
|
652 | 10c2650b | Iustin Pop | - instance2.example.com
|
653 | a8083063 | Iustin Pop |
|
654 | 098c0958 | Michael Hanselmann | """
|
655 | e69d05fd | Iustin Pop | results = [] |
656 | e69d05fd | Iustin Pop | for hname in hypervisor_list: |
657 | e69d05fd | Iustin Pop | try:
|
658 | e69d05fd | Iustin Pop | names = hypervisor.GetHypervisor(hname).ListInstances() |
659 | e69d05fd | Iustin Pop | results.extend(names) |
660 | e69d05fd | Iustin Pop | except errors.HypervisorError, err:
|
661 | aca13712 | Iustin Pop | _Fail("Error enumerating instances (hypervisor %s): %s",
|
662 | aca13712 | Iustin Pop | hname, err, exc=True)
|
663 | a8083063 | Iustin Pop | |
664 | e69d05fd | Iustin Pop | return results
|
665 | a8083063 | Iustin Pop | |
666 | a8083063 | Iustin Pop | |
667 | e69d05fd | Iustin Pop | def GetInstanceInfo(instance, hname): |
668 | 5bbd3f7f | Michael Hanselmann | """Gives back the information about an instance as a dictionary.
|
669 | a8083063 | Iustin Pop |
|
670 | e69d05fd | Iustin Pop | @type instance: string
|
671 | e69d05fd | Iustin Pop | @param instance: the instance name
|
672 | e69d05fd | Iustin Pop | @type hname: string
|
673 | e69d05fd | Iustin Pop | @param hname: the hypervisor type of the instance
|
674 | a8083063 | Iustin Pop |
|
675 | e69d05fd | Iustin Pop | @rtype: dict
|
676 | e69d05fd | Iustin Pop | @return: dictionary with the following keys:
|
677 | e69d05fd | Iustin Pop | - memory: memory size of instance (int)
|
678 | e69d05fd | Iustin Pop | - state: xen state of instance (string)
|
679 | e69d05fd | Iustin Pop | - time: cpu time of instance (float)
|
680 | a8083063 | Iustin Pop |
|
681 | 098c0958 | Michael Hanselmann | """
|
682 | a8083063 | Iustin Pop | output = {} |
683 | a8083063 | Iustin Pop | |
684 | e69d05fd | Iustin Pop | iinfo = hypervisor.GetHypervisor(hname).GetInstanceInfo(instance) |
685 | a8083063 | Iustin Pop | if iinfo is not None: |
686 | a8083063 | Iustin Pop | output['memory'] = iinfo[2] |
687 | a8083063 | Iustin Pop | output['state'] = iinfo[4] |
688 | a8083063 | Iustin Pop | output['time'] = iinfo[5] |
689 | a8083063 | Iustin Pop | |
690 | c26a6bd2 | Iustin Pop | return output
|
691 | a8083063 | Iustin Pop | |
692 | a8083063 | Iustin Pop | |
693 | 56e7640c | Iustin Pop | def GetInstanceMigratable(instance): |
694 | 56e7640c | Iustin Pop | """Gives whether an instance can be migrated.
|
695 | 56e7640c | Iustin Pop |
|
696 | 56e7640c | Iustin Pop | @type instance: L{objects.Instance}
|
697 | 56e7640c | Iustin Pop | @param instance: object representing the instance to be checked.
|
698 | 56e7640c | Iustin Pop |
|
699 | 56e7640c | Iustin Pop | @rtype: tuple
|
700 | 56e7640c | Iustin Pop | @return: tuple of (result, description) where:
|
701 | 56e7640c | Iustin Pop | - result: whether the instance can be migrated or not
|
702 | 56e7640c | Iustin Pop | - description: a description of the issue, if relevant
|
703 | 56e7640c | Iustin Pop |
|
704 | 56e7640c | Iustin Pop | """
|
705 | 56e7640c | Iustin Pop | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
706 | afdc3985 | Iustin Pop | iname = instance.name |
707 | afdc3985 | Iustin Pop | if iname not in hyper.ListInstances(): |
708 | afdc3985 | Iustin Pop | _Fail("Instance %s is not running", iname)
|
709 | 56e7640c | Iustin Pop | |
710 | 56e7640c | Iustin Pop | for idx in range(len(instance.disks)): |
711 | afdc3985 | Iustin Pop | link_name = _GetBlockDevSymlinkPath(iname, idx) |
712 | 56e7640c | Iustin Pop | if not os.path.islink(link_name): |
713 | afdc3985 | Iustin Pop | _Fail("Instance %s was not restarted since ganeti 1.2.5", iname)
|
714 | 56e7640c | Iustin Pop | |
715 | 56e7640c | Iustin Pop | |
716 | e69d05fd | Iustin Pop | def GetAllInstancesInfo(hypervisor_list): |
717 | a8083063 | Iustin Pop | """Gather data about all instances.
|
718 | a8083063 | Iustin Pop |
|
719 | 10c2650b | Iustin Pop | This is the equivalent of L{GetInstanceInfo}, except that it
|
720 | a8083063 | Iustin Pop | computes data for all instances at once, thus being faster if one
|
721 | a8083063 | Iustin Pop | needs data about more than one instance.
|
722 | a8083063 | Iustin Pop |
|
723 | e69d05fd | Iustin Pop | @type hypervisor_list: list
|
724 | e69d05fd | Iustin Pop | @param hypervisor_list: list of hypervisors to query for instance data
|
725 | e69d05fd | Iustin Pop |
|
726 | 955db481 | Guido Trotter | @rtype: dict
|
727 | e69d05fd | Iustin Pop | @return: dictionary of instance: data, with data having the following keys:
|
728 | e69d05fd | Iustin Pop | - memory: memory size of instance (int)
|
729 | e69d05fd | Iustin Pop | - state: xen state of instance (string)
|
730 | e69d05fd | Iustin Pop | - time: cpu time of instance (float)
|
731 | 10c2650b | Iustin Pop | - vcpus: the number of vcpus
|
732 | a8083063 | Iustin Pop |
|
733 | 098c0958 | Michael Hanselmann | """
|
734 | a8083063 | Iustin Pop | output = {} |
735 | a8083063 | Iustin Pop | |
736 | e69d05fd | Iustin Pop | for hname in hypervisor_list: |
737 | e69d05fd | Iustin Pop | iinfo = hypervisor.GetHypervisor(hname).GetAllInstancesInfo() |
738 | e69d05fd | Iustin Pop | if iinfo:
|
739 | 29921401 | Iustin Pop | for name, _, memory, vcpus, state, times in iinfo: |
740 | f23b5ae8 | Iustin Pop | value = { |
741 | e69d05fd | Iustin Pop | 'memory': memory,
|
742 | e69d05fd | Iustin Pop | 'vcpus': vcpus,
|
743 | e69d05fd | Iustin Pop | 'state': state,
|
744 | e69d05fd | Iustin Pop | 'time': times,
|
745 | e69d05fd | Iustin Pop | } |
746 | b33b6f55 | Iustin Pop | if name in output: |
747 | b33b6f55 | Iustin Pop | # we only check static parameters, like memory and vcpus,
|
748 | b33b6f55 | Iustin Pop | # and not state and time which can change between the
|
749 | b33b6f55 | Iustin Pop | # invocations of the different hypervisors
|
750 | b33b6f55 | Iustin Pop | for key in 'memory', 'vcpus': |
751 | b33b6f55 | Iustin Pop | if value[key] != output[name][key]:
|
752 | 2fa74ef4 | Iustin Pop | _Fail("Instance %s is running twice"
|
753 | 2fa74ef4 | Iustin Pop | " with different parameters", name)
|
754 | f23b5ae8 | Iustin Pop | output[name] = value |
755 | a8083063 | Iustin Pop | |
756 | c26a6bd2 | Iustin Pop | return output
|
757 | a8083063 | Iustin Pop | |
758 | a8083063 | Iustin Pop | |
759 | e557bae9 | Guido Trotter | def InstanceOsAdd(instance, reinstall): |
760 | 2f8598a5 | Alexander Schreiber | """Add an OS to an instance.
|
761 | a8083063 | Iustin Pop |
|
762 | d15a9ad3 | Guido Trotter | @type instance: L{objects.Instance}
|
763 | d15a9ad3 | Guido Trotter | @param instance: Instance whose OS is to be installed
|
764 | e557bae9 | Guido Trotter | @type reinstall: boolean
|
765 | e557bae9 | Guido Trotter | @param reinstall: whether this is an instance reinstall
|
766 | c26a6bd2 | Iustin Pop | @rtype: None
|
767 | a8083063 | Iustin Pop |
|
768 | a8083063 | Iustin Pop | """
|
769 | 255dcebd | Iustin Pop | inst_os = OSFromDisk(instance.os) |
770 | 255dcebd | Iustin Pop | |
771 | d1a7d66f | Guido Trotter | create_env = OSEnvironment(instance, inst_os) |
772 | e557bae9 | Guido Trotter | if reinstall:
|
773 | e557bae9 | Guido Trotter | create_env['INSTANCE_REINSTALL'] = "1" |
774 | a8083063 | Iustin Pop | |
775 | a8083063 | Iustin Pop | logfile = "%s/add-%s-%s-%d.log" % (constants.LOG_OS_DIR, instance.os,
|
776 | a8083063 | Iustin Pop | instance.name, int(time.time()))
|
777 | decd5f45 | Iustin Pop | |
778 | d868edb4 | Iustin Pop | result = utils.RunCmd([inst_os.create_script], env=create_env, |
779 | d868edb4 | Iustin Pop | cwd=inst_os.path, output=logfile,) |
780 | decd5f45 | Iustin Pop | if result.failed:
|
781 | 18682bca | Iustin Pop | logging.error("os create command '%s' returned error: %s, logfile: %s,"
|
782 | d868edb4 | Iustin Pop | " output: %s", result.cmd, result.fail_reason, logfile,
|
783 | 18682bca | Iustin Pop | result.output) |
784 | 26f15862 | Iustin Pop | lines = [utils.SafeEncode(val) |
785 | 20e01edd | Iustin Pop | for val in utils.TailFile(logfile, lines=20)] |
786 | afdc3985 | Iustin Pop | _Fail("OS create script failed (%s), last lines in the"
|
787 | afdc3985 | Iustin Pop | " log file:\n%s", result.fail_reason, "\n".join(lines), log=False) |
788 | decd5f45 | Iustin Pop | |
789 | decd5f45 | Iustin Pop | |
790 | d15a9ad3 | Guido Trotter | def RunRenameInstance(instance, old_name): |
791 | decd5f45 | Iustin Pop | """Run the OS rename script for an instance.
|
792 | decd5f45 | Iustin Pop |
|
793 | b1206984 | Iustin Pop | @type instance: L{objects.Instance}
|
794 | d15a9ad3 | Guido Trotter | @param instance: Instance whose OS is to be installed
|
795 | d15a9ad3 | Guido Trotter | @type old_name: string
|
796 | d15a9ad3 | Guido Trotter | @param old_name: previous instance name
|
797 | 10c2650b | Iustin Pop | @rtype: boolean
|
798 | 10c2650b | Iustin Pop | @return: the success of the operation
|
799 | decd5f45 | Iustin Pop |
|
800 | decd5f45 | Iustin Pop | """
|
801 | decd5f45 | Iustin Pop | inst_os = OSFromDisk(instance.os) |
802 | decd5f45 | Iustin Pop | |
803 | d1a7d66f | Guido Trotter | rename_env = OSEnvironment(instance, inst_os) |
804 | ff38b6c0 | Guido Trotter | rename_env['OLD_INSTANCE_NAME'] = old_name
|
805 | decd5f45 | Iustin Pop | |
806 | decd5f45 | Iustin Pop | logfile = "%s/rename-%s-%s-%s-%d.log" % (constants.LOG_OS_DIR, instance.os,
|
807 | decd5f45 | Iustin Pop | old_name, |
808 | decd5f45 | Iustin Pop | instance.name, int(time.time()))
|
809 | a8083063 | Iustin Pop | |
810 | d868edb4 | Iustin Pop | result = utils.RunCmd([inst_os.rename_script], env=rename_env, |
811 | d868edb4 | Iustin Pop | cwd=inst_os.path, output=logfile) |
812 | a8083063 | Iustin Pop | |
813 | a8083063 | Iustin Pop | if result.failed:
|
814 | 18682bca | Iustin Pop | logging.error("os create command '%s' returned error: %s output: %s",
|
815 | d868edb4 | Iustin Pop | result.cmd, result.fail_reason, result.output) |
816 | 26f15862 | Iustin Pop | lines = [utils.SafeEncode(val) |
817 | 96841384 | Iustin Pop | for val in utils.TailFile(logfile, lines=20)] |
818 | afdc3985 | Iustin Pop | _Fail("OS rename script failed (%s), last lines in the"
|
819 | afdc3985 | Iustin Pop | " log file:\n%s", result.fail_reason, "\n".join(lines), log=False) |
820 | a8083063 | Iustin Pop | |
821 | a8083063 | Iustin Pop | |
822 | a8083063 | Iustin Pop | def _GetVGInfo(vg_name): |
823 | 5bbd3f7f | Michael Hanselmann | """Get information about the volume group.
|
824 | a8083063 | Iustin Pop |
|
825 | 10c2650b | Iustin Pop | @type vg_name: str
|
826 | 10c2650b | Iustin Pop | @param vg_name: the volume group which we query
|
827 | 10c2650b | Iustin Pop | @rtype: dict
|
828 | 10c2650b | Iustin Pop | @return:
|
829 | 10c2650b | Iustin Pop | A dictionary with the following keys:
|
830 | 10c2650b | Iustin Pop | - C{vg_size} is the total size of the volume group in MiB
|
831 | 10c2650b | Iustin Pop | - C{vg_free} is the free size of the volume group in MiB
|
832 | 10c2650b | Iustin Pop | - C{pv_count} are the number of physical disks in that VG
|
833 | a8083063 | Iustin Pop |
|
834 | 10c2650b | Iustin Pop | If an error occurs during gathering of data, we return the same dict
|
835 | 10c2650b | Iustin Pop | with keys all set to None.
|
836 | f4d377e7 | Iustin Pop |
|
837 | a8083063 | Iustin Pop | """
|
838 | f4d377e7 | Iustin Pop | retdic = dict.fromkeys(["vg_size", "vg_free", "pv_count"]) |
839 | f4d377e7 | Iustin Pop | |
840 | a8083063 | Iustin Pop | retval = utils.RunCmd(["vgs", "-ovg_size,vg_free,pv_count", "--noheadings", |
841 | a8083063 | Iustin Pop | "--nosuffix", "--units=m", "--separator=:", vg_name]) |
842 | a8083063 | Iustin Pop | |
843 | a8083063 | Iustin Pop | if retval.failed:
|
844 | 18682bca | Iustin Pop | logging.error("volume group %s not present", vg_name)
|
845 | f4d377e7 | Iustin Pop | return retdic
|
846 | d87ae7d2 | Iustin Pop | valarr = retval.stdout.strip().rstrip(':').split(':') |
847 | f4d377e7 | Iustin Pop | if len(valarr) == 3: |
848 | f4d377e7 | Iustin Pop | try:
|
849 | f4d377e7 | Iustin Pop | retdic = { |
850 | f4d377e7 | Iustin Pop | "vg_size": int(round(float(valarr[0]), 0)), |
851 | f4d377e7 | Iustin Pop | "vg_free": int(round(float(valarr[1]), 0)), |
852 | f4d377e7 | Iustin Pop | "pv_count": int(valarr[2]), |
853 | f4d377e7 | Iustin Pop | } |
854 | f4d377e7 | Iustin Pop | except ValueError, err: |
855 | 29921401 | Iustin Pop | logging.exception("Fail to parse vgs output: %s", err)
|
856 | f4d377e7 | Iustin Pop | else:
|
857 | 18682bca | Iustin Pop | logging.error("vgs output has the wrong number of fields (expected"
|
858 | 18682bca | Iustin Pop | " three): %s", str(valarr)) |
859 | a8083063 | Iustin Pop | return retdic
|
860 | a8083063 | Iustin Pop | |
861 | a8083063 | Iustin Pop | |
862 | 5282084b | Iustin Pop | def _GetBlockDevSymlinkPath(instance_name, idx): |
863 | 5282084b | Iustin Pop | return os.path.join(constants.DISK_LINKS_DIR,
|
864 | 5282084b | Iustin Pop | "%s:%d" % (instance_name, idx))
|
865 | 5282084b | Iustin Pop | |
866 | 5282084b | Iustin Pop | |
867 | 5282084b | Iustin Pop | def _SymlinkBlockDev(instance_name, device_path, idx): |
868 | 9332fd8a | Iustin Pop | """Set up symlinks to a instance's block device.
|
869 | 9332fd8a | Iustin Pop |
|
870 | 9332fd8a | Iustin Pop | This is an auxiliary function run when an instance is start (on the primary
|
871 | 9332fd8a | Iustin Pop | node) or when an instance is migrated (on the target node).
|
872 | 9332fd8a | Iustin Pop |
|
873 | 9332fd8a | Iustin Pop |
|
874 | 5282084b | Iustin Pop | @param instance_name: the name of the target instance
|
875 | 5282084b | Iustin Pop | @param device_path: path of the physical block device, on the node
|
876 | 5282084b | Iustin Pop | @param idx: the disk index
|
877 | 5282084b | Iustin Pop | @return: absolute path to the disk's symlink
|
878 | 9332fd8a | Iustin Pop |
|
879 | 9332fd8a | Iustin Pop | """
|
880 | 5282084b | Iustin Pop | link_name = _GetBlockDevSymlinkPath(instance_name, idx) |
881 | 9332fd8a | Iustin Pop | try:
|
882 | 9332fd8a | Iustin Pop | os.symlink(device_path, link_name) |
883 | 5282084b | Iustin Pop | except OSError, err: |
884 | 5282084b | Iustin Pop | if err.errno == errno.EEXIST:
|
885 | 9332fd8a | Iustin Pop | if (not os.path.islink(link_name) or |
886 | 9332fd8a | Iustin Pop | os.readlink(link_name) != device_path): |
887 | 9332fd8a | Iustin Pop | os.remove(link_name) |
888 | 9332fd8a | Iustin Pop | os.symlink(device_path, link_name) |
889 | 9332fd8a | Iustin Pop | else:
|
890 | 9332fd8a | Iustin Pop | raise
|
891 | 9332fd8a | Iustin Pop | |
892 | 9332fd8a | Iustin Pop | return link_name
|
893 | 9332fd8a | Iustin Pop | |
894 | 9332fd8a | Iustin Pop | |
895 | 5282084b | Iustin Pop | def _RemoveBlockDevLinks(instance_name, disks): |
896 | 3c9c571d | Iustin Pop | """Remove the block device symlinks belonging to the given instance.
|
897 | 3c9c571d | Iustin Pop |
|
898 | 3c9c571d | Iustin Pop | """
|
899 | 29921401 | Iustin Pop | for idx, _ in enumerate(disks): |
900 | 5282084b | Iustin Pop | link_name = _GetBlockDevSymlinkPath(instance_name, idx) |
901 | 5282084b | Iustin Pop | if os.path.islink(link_name):
|
902 | 3c9c571d | Iustin Pop | try:
|
903 | 03dfa658 | Iustin Pop | os.remove(link_name) |
904 | 03dfa658 | Iustin Pop | except OSError: |
905 | 03dfa658 | Iustin Pop | logging.exception("Can't remove symlink '%s'", link_name)
|
906 | 3c9c571d | Iustin Pop | |
907 | 3c9c571d | Iustin Pop | |
908 | 9332fd8a | Iustin Pop | def _GatherAndLinkBlockDevs(instance): |
909 | a8083063 | Iustin Pop | """Set up an instance's block device(s).
|
910 | a8083063 | Iustin Pop |
|
911 | a8083063 | Iustin Pop | This is run on the primary node at instance startup. The block
|
912 | a8083063 | Iustin Pop | devices must be already assembled.
|
913 | a8083063 | Iustin Pop |
|
914 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
915 | 10c2650b | Iustin Pop | @param instance: the instance whose disks we shoul assemble
|
916 | 069cfbf1 | Iustin Pop | @rtype: list
|
917 | 069cfbf1 | Iustin Pop | @return: list of (disk_object, device_path)
|
918 | 10c2650b | Iustin Pop |
|
919 | a8083063 | Iustin Pop | """
|
920 | a8083063 | Iustin Pop | block_devices = [] |
921 | 9332fd8a | Iustin Pop | for idx, disk in enumerate(instance.disks): |
922 | a8083063 | Iustin Pop | device = _RecursiveFindBD(disk) |
923 | a8083063 | Iustin Pop | if device is None: |
924 | a8083063 | Iustin Pop | raise errors.BlockDeviceError("Block device '%s' is not set up." % |
925 | a8083063 | Iustin Pop | str(disk))
|
926 | a8083063 | Iustin Pop | device.Open() |
927 | 9332fd8a | Iustin Pop | try:
|
928 | 5282084b | Iustin Pop | link_name = _SymlinkBlockDev(instance.name, device.dev_path, idx) |
929 | 9332fd8a | Iustin Pop | except OSError, e: |
930 | 9332fd8a | Iustin Pop | raise errors.BlockDeviceError("Cannot create block device symlink: %s" % |
931 | 9332fd8a | Iustin Pop | e.strerror) |
932 | 9332fd8a | Iustin Pop | |
933 | 9332fd8a | Iustin Pop | block_devices.append((disk, link_name)) |
934 | 9332fd8a | Iustin Pop | |
935 | a8083063 | Iustin Pop | return block_devices
|
936 | a8083063 | Iustin Pop | |
937 | a8083063 | Iustin Pop | |
938 | 07813a9e | Iustin Pop | def StartInstance(instance): |
939 | a8083063 | Iustin Pop | """Start an instance.
|
940 | a8083063 | Iustin Pop |
|
941 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
942 | e69d05fd | Iustin Pop | @param instance: the instance object
|
943 | c26a6bd2 | Iustin Pop | @rtype: None
|
944 | a8083063 | Iustin Pop |
|
945 | 098c0958 | Michael Hanselmann | """
|
946 | e69d05fd | Iustin Pop | running_instances = GetInstanceList([instance.hypervisor]) |
947 | a8083063 | Iustin Pop | |
948 | a8083063 | Iustin Pop | if instance.name in running_instances: |
949 | c26a6bd2 | Iustin Pop | logging.info("Instance %s already running, not starting", instance.name)
|
950 | c26a6bd2 | Iustin Pop | return
|
951 | a8083063 | Iustin Pop | |
952 | a8083063 | Iustin Pop | try:
|
953 | ec596c24 | Iustin Pop | block_devices = _GatherAndLinkBlockDevs(instance) |
954 | ec596c24 | Iustin Pop | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
955 | 07813a9e | Iustin Pop | hyper.StartInstance(instance, block_devices) |
956 | ec596c24 | Iustin Pop | except errors.BlockDeviceError, err:
|
957 | 2cc6781a | Iustin Pop | _Fail("Block device error: %s", err, exc=True) |
958 | a8083063 | Iustin Pop | except errors.HypervisorError, err:
|
959 | 5282084b | Iustin Pop | _RemoveBlockDevLinks(instance.name, instance.disks) |
960 | 2cc6781a | Iustin Pop | _Fail("Hypervisor error: %s", err, exc=True) |
961 | a8083063 | Iustin Pop | |
962 | a8083063 | Iustin Pop | |
963 | 1fae010f | Iustin Pop | def InstanceShutdown(instance): |
964 | a8083063 | Iustin Pop | """Shut an instance down.
|
965 | a8083063 | Iustin Pop |
|
966 | 10c2650b | Iustin Pop | @note: this functions uses polling with a hardcoded timeout.
|
967 | 10c2650b | Iustin Pop |
|
968 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
969 | e69d05fd | Iustin Pop | @param instance: the instance object
|
970 | c26a6bd2 | Iustin Pop | @rtype: None
|
971 | a8083063 | Iustin Pop |
|
972 | 098c0958 | Michael Hanselmann | """
|
973 | e69d05fd | Iustin Pop | hv_name = instance.hypervisor |
974 | e69d05fd | Iustin Pop | running_instances = GetInstanceList([hv_name]) |
975 | c26a6bd2 | Iustin Pop | iname = instance.name |
976 | a8083063 | Iustin Pop | |
977 | c26a6bd2 | Iustin Pop | if iname not in running_instances: |
978 | c26a6bd2 | Iustin Pop | logging.info("Instance %s not running, doing nothing", iname)
|
979 | c26a6bd2 | Iustin Pop | return
|
980 | a8083063 | Iustin Pop | |
981 | e69d05fd | Iustin Pop | hyper = hypervisor.GetHypervisor(hv_name) |
982 | a8083063 | Iustin Pop | try:
|
983 | a8083063 | Iustin Pop | hyper.StopInstance(instance) |
984 | a8083063 | Iustin Pop | except errors.HypervisorError, err:
|
985 | c26a6bd2 | Iustin Pop | _Fail("Failed to stop instance %s: %s", iname, err)
|
986 | a8083063 | Iustin Pop | |
987 | a8083063 | Iustin Pop | # test every 10secs for 2min
|
988 | a8083063 | Iustin Pop | |
989 | a8083063 | Iustin Pop | time.sleep(1)
|
990 | 7c4d6c7b | Michael Hanselmann | for _ in range(11): |
991 | e69d05fd | Iustin Pop | if instance.name not in GetInstanceList([hv_name]): |
992 | a8083063 | Iustin Pop | break
|
993 | a8083063 | Iustin Pop | time.sleep(10)
|
994 | a8083063 | Iustin Pop | else:
|
995 | a8083063 | Iustin Pop | # the shutdown did not succeed
|
996 | c26a6bd2 | Iustin Pop | logging.error("Shutdown of '%s' unsuccessful, using destroy", iname)
|
997 | a8083063 | Iustin Pop | |
998 | a8083063 | Iustin Pop | try:
|
999 | a8083063 | Iustin Pop | hyper.StopInstance(instance, force=True)
|
1000 | a8083063 | Iustin Pop | except errors.HypervisorError, err:
|
1001 | c26a6bd2 | Iustin Pop | _Fail("Failed to force stop instance %s: %s", iname, err)
|
1002 | a8083063 | Iustin Pop | |
1003 | a8083063 | Iustin Pop | time.sleep(1)
|
1004 | e69d05fd | Iustin Pop | if instance.name in GetInstanceList([hv_name]): |
1005 | c26a6bd2 | Iustin Pop | _Fail("Could not shutdown instance %s even by destroy", iname)
|
1006 | 3c9c571d | Iustin Pop | |
1007 | c26a6bd2 | Iustin Pop | _RemoveBlockDevLinks(iname, instance.disks) |
1008 | a8083063 | Iustin Pop | |
1009 | a8083063 | Iustin Pop | |
1010 | 07813a9e | Iustin Pop | def InstanceReboot(instance, reboot_type): |
1011 | 007a2f3e | Alexander Schreiber | """Reboot an instance.
|
1012 | 007a2f3e | Alexander Schreiber |
|
1013 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
1014 | 10c2650b | Iustin Pop | @param instance: the instance object to reboot
|
1015 | 10c2650b | Iustin Pop | @type reboot_type: str
|
1016 | 10c2650b | Iustin Pop | @param reboot_type: the type of reboot, one the following
|
1017 | 10c2650b | Iustin Pop | constants:
|
1018 | 10c2650b | Iustin Pop | - L{constants.INSTANCE_REBOOT_SOFT}: only reboot the
|
1019 | 10c2650b | Iustin Pop | instance OS, do not recreate the VM
|
1020 | 10c2650b | Iustin Pop | - L{constants.INSTANCE_REBOOT_HARD}: tear down and
|
1021 | 10c2650b | Iustin Pop | restart the VM (at the hypervisor level)
|
1022 | 73e5a4f4 | Iustin Pop | - the other reboot type (L{constants.INSTANCE_REBOOT_FULL}) is
|
1023 | 73e5a4f4 | Iustin Pop | not accepted here, since that mode is handled differently, in
|
1024 | 73e5a4f4 | Iustin Pop | cmdlib, and translates into full stop and start of the
|
1025 | 73e5a4f4 | Iustin Pop | instance (instead of a call_instance_reboot RPC)
|
1026 | c26a6bd2 | Iustin Pop | @rtype: None
|
1027 | 007a2f3e | Alexander Schreiber |
|
1028 | 007a2f3e | Alexander Schreiber | """
|
1029 | e69d05fd | Iustin Pop | running_instances = GetInstanceList([instance.hypervisor]) |
1030 | 007a2f3e | Alexander Schreiber | |
1031 | 007a2f3e | Alexander Schreiber | if instance.name not in running_instances: |
1032 | 2cc6781a | Iustin Pop | _Fail("Cannot reboot instance %s that is not running", instance.name)
|
1033 | 007a2f3e | Alexander Schreiber | |
1034 | e69d05fd | Iustin Pop | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
1035 | 007a2f3e | Alexander Schreiber | if reboot_type == constants.INSTANCE_REBOOT_SOFT:
|
1036 | 007a2f3e | Alexander Schreiber | try:
|
1037 | 007a2f3e | Alexander Schreiber | hyper.RebootInstance(instance) |
1038 | 007a2f3e | Alexander Schreiber | except errors.HypervisorError, err:
|
1039 | 2cc6781a | Iustin Pop | _Fail("Failed to soft reboot instance %s: %s", instance.name, err)
|
1040 | 007a2f3e | Alexander Schreiber | elif reboot_type == constants.INSTANCE_REBOOT_HARD:
|
1041 | 007a2f3e | Alexander Schreiber | try:
|
1042 | c26a6bd2 | Iustin Pop | InstanceShutdown(instance) |
1043 | 07813a9e | Iustin Pop | return StartInstance(instance)
|
1044 | 007a2f3e | Alexander Schreiber | except errors.HypervisorError, err:
|
1045 | 2cc6781a | Iustin Pop | _Fail("Failed to hard reboot instance %s: %s", instance.name, err)
|
1046 | 007a2f3e | Alexander Schreiber | else:
|
1047 | 2cc6781a | Iustin Pop | _Fail("Invalid reboot_type received: %s", reboot_type)
|
1048 | 007a2f3e | Alexander Schreiber | |
1049 | 007a2f3e | Alexander Schreiber | |
1050 | 6906a9d8 | Guido Trotter | def MigrationInfo(instance): |
1051 | 6906a9d8 | Guido Trotter | """Gather information about an instance to be migrated.
|
1052 | 6906a9d8 | Guido Trotter |
|
1053 | 6906a9d8 | Guido Trotter | @type instance: L{objects.Instance}
|
1054 | 6906a9d8 | Guido Trotter | @param instance: the instance definition
|
1055 | 6906a9d8 | Guido Trotter |
|
1056 | 6906a9d8 | Guido Trotter | """
|
1057 | cd42d0ad | Guido Trotter | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
1058 | cd42d0ad | Guido Trotter | try:
|
1059 | cd42d0ad | Guido Trotter | info = hyper.MigrationInfo(instance) |
1060 | cd42d0ad | Guido Trotter | except errors.HypervisorError, err:
|
1061 | 2cc6781a | Iustin Pop | _Fail("Failed to fetch migration information: %s", err, exc=True) |
1062 | c26a6bd2 | Iustin Pop | return info
|
1063 | 6906a9d8 | Guido Trotter | |
1064 | 6906a9d8 | Guido Trotter | |
1065 | 6906a9d8 | Guido Trotter | def AcceptInstance(instance, info, target): |
1066 | 6906a9d8 | Guido Trotter | """Prepare the node to accept an instance.
|
1067 | 6906a9d8 | Guido Trotter |
|
1068 | 6906a9d8 | Guido Trotter | @type instance: L{objects.Instance}
|
1069 | 6906a9d8 | Guido Trotter | @param instance: the instance definition
|
1070 | 6906a9d8 | Guido Trotter | @type info: string/data (opaque)
|
1071 | 6906a9d8 | Guido Trotter | @param info: migration information, from the source node
|
1072 | 6906a9d8 | Guido Trotter | @type target: string
|
1073 | 6906a9d8 | Guido Trotter | @param target: target host (usually ip), on this node
|
1074 | 6906a9d8 | Guido Trotter |
|
1075 | 6906a9d8 | Guido Trotter | """
|
1076 | cd42d0ad | Guido Trotter | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
1077 | cd42d0ad | Guido Trotter | try:
|
1078 | cd42d0ad | Guido Trotter | hyper.AcceptInstance(instance, info, target) |
1079 | cd42d0ad | Guido Trotter | except errors.HypervisorError, err:
|
1080 | 2cc6781a | Iustin Pop | _Fail("Failed to accept instance: %s", err, exc=True) |
1081 | 6906a9d8 | Guido Trotter | |
1082 | 6906a9d8 | Guido Trotter | |
1083 | 6906a9d8 | Guido Trotter | def FinalizeMigration(instance, info, success): |
1084 | 6906a9d8 | Guido Trotter | """Finalize any preparation to accept an instance.
|
1085 | 6906a9d8 | Guido Trotter |
|
1086 | 6906a9d8 | Guido Trotter | @type instance: L{objects.Instance}
|
1087 | 6906a9d8 | Guido Trotter | @param instance: the instance definition
|
1088 | 6906a9d8 | Guido Trotter | @type info: string/data (opaque)
|
1089 | 6906a9d8 | Guido Trotter | @param info: migration information, from the source node
|
1090 | 6906a9d8 | Guido Trotter | @type success: boolean
|
1091 | 6906a9d8 | Guido Trotter | @param success: whether the migration was a success or a failure
|
1092 | 6906a9d8 | Guido Trotter |
|
1093 | 6906a9d8 | Guido Trotter | """
|
1094 | cd42d0ad | Guido Trotter | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
1095 | cd42d0ad | Guido Trotter | try:
|
1096 | cd42d0ad | Guido Trotter | hyper.FinalizeMigration(instance, info, success) |
1097 | cd42d0ad | Guido Trotter | except errors.HypervisorError, err:
|
1098 | 2cc6781a | Iustin Pop | _Fail("Failed to finalize migration: %s", err, exc=True) |
1099 | 6906a9d8 | Guido Trotter | |
1100 | 6906a9d8 | Guido Trotter | |
1101 | 2a10865c | Iustin Pop | def MigrateInstance(instance, target, live): |
1102 | 2a10865c | Iustin Pop | """Migrates an instance to another node.
|
1103 | 2a10865c | Iustin Pop |
|
1104 | b1206984 | Iustin Pop | @type instance: L{objects.Instance}
|
1105 | 9f0e6b37 | Iustin Pop | @param instance: the instance definition
|
1106 | 9f0e6b37 | Iustin Pop | @type target: string
|
1107 | 9f0e6b37 | Iustin Pop | @param target: the target node name
|
1108 | 9f0e6b37 | Iustin Pop | @type live: boolean
|
1109 | 9f0e6b37 | Iustin Pop | @param live: whether the migration should be done live or not (the
|
1110 | 9f0e6b37 | Iustin Pop | interpretation of this parameter is left to the hypervisor)
|
1111 | 9f0e6b37 | Iustin Pop | @rtype: tuple
|
1112 | 9f0e6b37 | Iustin Pop | @return: a tuple of (success, msg) where:
|
1113 | 9f0e6b37 | Iustin Pop | - succes is a boolean denoting the success/failure of the operation
|
1114 | 9f0e6b37 | Iustin Pop | - msg is a string with details in case of failure
|
1115 | 9f0e6b37 | Iustin Pop |
|
1116 | 2a10865c | Iustin Pop | """
|
1117 | 53c776b5 | Iustin Pop | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
1118 | 2a10865c | Iustin Pop | |
1119 | 2a10865c | Iustin Pop | try:
|
1120 | 9f0e6b37 | Iustin Pop | hyper.MigrateInstance(instance.name, target, live) |
1121 | 2a10865c | Iustin Pop | except errors.HypervisorError, err:
|
1122 | 2cc6781a | Iustin Pop | _Fail("Failed to migrate instance: %s", err, exc=True) |
1123 | 2a10865c | Iustin Pop | |
1124 | 2a10865c | Iustin Pop | |
1125 | 821d1bd1 | Iustin Pop | def BlockdevCreate(disk, size, owner, on_primary, info): |
1126 | a8083063 | Iustin Pop | """Creates a block device for an instance.
|
1127 | a8083063 | Iustin Pop |
|
1128 | b1206984 | Iustin Pop | @type disk: L{objects.Disk}
|
1129 | b1206984 | Iustin Pop | @param disk: the object describing the disk we should create
|
1130 | b1206984 | Iustin Pop | @type size: int
|
1131 | b1206984 | Iustin Pop | @param size: the size of the physical underlying device, in MiB
|
1132 | b1206984 | Iustin Pop | @type owner: str
|
1133 | b1206984 | Iustin Pop | @param owner: the name of the instance for which disk is created,
|
1134 | b1206984 | Iustin Pop | used for device cache data
|
1135 | b1206984 | Iustin Pop | @type on_primary: boolean
|
1136 | b1206984 | Iustin Pop | @param on_primary: indicates if it is the primary node or not
|
1137 | b1206984 | Iustin Pop | @type info: string
|
1138 | b1206984 | Iustin Pop | @param info: string that will be sent to the physical device
|
1139 | b1206984 | Iustin Pop | creation, used for example to set (LVM) tags on LVs
|
1140 | b1206984 | Iustin Pop |
|
1141 | b1206984 | Iustin Pop | @return: the new unique_id of the device (this can sometime be
|
1142 | b1206984 | Iustin Pop | computed only after creation), or None. On secondary nodes,
|
1143 | b1206984 | Iustin Pop | it's not required to return anything.
|
1144 | a8083063 | Iustin Pop |
|
1145 | a8083063 | Iustin Pop | """
|
1146 | a8083063 | Iustin Pop | clist = [] |
1147 | a8083063 | Iustin Pop | if disk.children:
|
1148 | a8083063 | Iustin Pop | for child in disk.children: |
1149 | 1063abd1 | Iustin Pop | try:
|
1150 | 1063abd1 | Iustin Pop | crdev = _RecursiveAssembleBD(child, owner, on_primary) |
1151 | 1063abd1 | Iustin Pop | except errors.BlockDeviceError, err:
|
1152 | 2cc6781a | Iustin Pop | _Fail("Can't assemble device %s: %s", child, err)
|
1153 | a8083063 | Iustin Pop | if on_primary or disk.AssembleOnSecondary(): |
1154 | a8083063 | Iustin Pop | # we need the children open in case the device itself has to
|
1155 | a8083063 | Iustin Pop | # be assembled
|
1156 | 1063abd1 | Iustin Pop | try:
|
1157 | 1063abd1 | Iustin Pop | crdev.Open() |
1158 | 1063abd1 | Iustin Pop | except errors.BlockDeviceError, err:
|
1159 | 2cc6781a | Iustin Pop | _Fail("Can't make child '%s' read-write: %s", child, err)
|
1160 | a8083063 | Iustin Pop | clist.append(crdev) |
1161 | a8083063 | Iustin Pop | |
1162 | dab69e97 | Iustin Pop | try:
|
1163 | 464f8daf | Iustin Pop | device = bdev.Create(disk.dev_type, disk.physical_id, clist, disk.size) |
1164 | 1063abd1 | Iustin Pop | except errors.BlockDeviceError, err:
|
1165 | 2cc6781a | Iustin Pop | _Fail("Can't create block device: %s", err)
|
1166 | 6c626518 | Iustin Pop | |
1167 | a8083063 | Iustin Pop | if on_primary or disk.AssembleOnSecondary(): |
1168 | 1063abd1 | Iustin Pop | try:
|
1169 | 1063abd1 | Iustin Pop | device.Assemble() |
1170 | 1063abd1 | Iustin Pop | except errors.BlockDeviceError, err:
|
1171 | 2cc6781a | Iustin Pop | _Fail("Can't assemble device after creation, unusual event: %s", err)
|
1172 | e31c43f7 | Michael Hanselmann | device.SetSyncSpeed(constants.SYNC_SPEED) |
1173 | a8083063 | Iustin Pop | if on_primary or disk.OpenOnSecondary(): |
1174 | 1063abd1 | Iustin Pop | try:
|
1175 | 1063abd1 | Iustin Pop | device.Open(force=True)
|
1176 | 1063abd1 | Iustin Pop | except errors.BlockDeviceError, err:
|
1177 | 2cc6781a | Iustin Pop | _Fail("Can't make device r/w after creation, unusual event: %s", err)
|
1178 | 3f78eef2 | Iustin Pop | DevCacheManager.UpdateCache(device.dev_path, owner, |
1179 | 3f78eef2 | Iustin Pop | on_primary, disk.iv_name) |
1180 | a0c3fea1 | Michael Hanselmann | |
1181 | a0c3fea1 | Michael Hanselmann | device.SetInfo(info) |
1182 | a0c3fea1 | Michael Hanselmann | |
1183 | c26a6bd2 | Iustin Pop | return device.unique_id
|
1184 | a8083063 | Iustin Pop | |
1185 | a8083063 | Iustin Pop | |
1186 | 821d1bd1 | Iustin Pop | def BlockdevRemove(disk): |
1187 | a8083063 | Iustin Pop | """Remove a block device.
|
1188 | a8083063 | Iustin Pop |
|
1189 | 10c2650b | Iustin Pop | @note: This is intended to be called recursively.
|
1190 | 10c2650b | Iustin Pop |
|
1191 | c41eea6e | Iustin Pop | @type disk: L{objects.Disk}
|
1192 | 10c2650b | Iustin Pop | @param disk: the disk object we should remove
|
1193 | 10c2650b | Iustin Pop | @rtype: boolean
|
1194 | 10c2650b | Iustin Pop | @return: the success of the operation
|
1195 | a8083063 | Iustin Pop |
|
1196 | a8083063 | Iustin Pop | """
|
1197 | e1bc0878 | Iustin Pop | msgs = [] |
1198 | a8083063 | Iustin Pop | try:
|
1199 | bca2e7f4 | Iustin Pop | rdev = _RecursiveFindBD(disk) |
1200 | a8083063 | Iustin Pop | except errors.BlockDeviceError, err:
|
1201 | a8083063 | Iustin Pop | # probably can't attach
|
1202 | 18682bca | Iustin Pop | logging.info("Can't attach to device %s in remove", disk)
|
1203 | a8083063 | Iustin Pop | rdev = None
|
1204 | a8083063 | Iustin Pop | if rdev is not None: |
1205 | 3f78eef2 | Iustin Pop | r_path = rdev.dev_path |
1206 | e1bc0878 | Iustin Pop | try:
|
1207 | 0c6c04ec | Iustin Pop | rdev.Remove() |
1208 | e1bc0878 | Iustin Pop | except errors.BlockDeviceError, err:
|
1209 | e1bc0878 | Iustin Pop | msgs.append(str(err))
|
1210 | c26a6bd2 | Iustin Pop | if not msgs: |
1211 | 3f78eef2 | Iustin Pop | DevCacheManager.RemoveCache(r_path) |
1212 | e1bc0878 | Iustin Pop | |
1213 | a8083063 | Iustin Pop | if disk.children:
|
1214 | a8083063 | Iustin Pop | for child in disk.children: |
1215 | c26a6bd2 | Iustin Pop | try:
|
1216 | c26a6bd2 | Iustin Pop | BlockdevRemove(child) |
1217 | c26a6bd2 | Iustin Pop | except RPCFail, err:
|
1218 | c26a6bd2 | Iustin Pop | msgs.append(str(err))
|
1219 | e1bc0878 | Iustin Pop | |
1220 | c26a6bd2 | Iustin Pop | if msgs:
|
1221 | afdc3985 | Iustin Pop | _Fail("; ".join(msgs))
|
1222 | afdc3985 | Iustin Pop | |
1223 | a8083063 | Iustin Pop | |
1224 | 3f78eef2 | Iustin Pop | def _RecursiveAssembleBD(disk, owner, as_primary): |
1225 | a8083063 | Iustin Pop | """Activate a block device for an instance.
|
1226 | a8083063 | Iustin Pop |
|
1227 | a8083063 | Iustin Pop | This is run on the primary and secondary nodes for an instance.
|
1228 | a8083063 | Iustin Pop |
|
1229 | 10c2650b | Iustin Pop | @note: this function is called recursively.
|
1230 | a8083063 | Iustin Pop |
|
1231 | 10c2650b | Iustin Pop | @type disk: L{objects.Disk}
|
1232 | 10c2650b | Iustin Pop | @param disk: the disk we try to assemble
|
1233 | 10c2650b | Iustin Pop | @type owner: str
|
1234 | 10c2650b | Iustin Pop | @param owner: the name of the instance which owns the disk
|
1235 | 10c2650b | Iustin Pop | @type as_primary: boolean
|
1236 | 10c2650b | Iustin Pop | @param as_primary: if we should make the block device
|
1237 | 10c2650b | Iustin Pop | read/write
|
1238 | a8083063 | Iustin Pop |
|
1239 | 10c2650b | Iustin Pop | @return: the assembled device or None (in case no device
|
1240 | 10c2650b | Iustin Pop | was assembled)
|
1241 | 10c2650b | Iustin Pop | @raise errors.BlockDeviceError: in case there is an error
|
1242 | 10c2650b | Iustin Pop | during the activation of the children or the device
|
1243 | 10c2650b | Iustin Pop | itself
|
1244 | a8083063 | Iustin Pop |
|
1245 | a8083063 | Iustin Pop | """
|
1246 | a8083063 | Iustin Pop | children = [] |
1247 | a8083063 | Iustin Pop | if disk.children:
|
1248 | fc1dc9d7 | Iustin Pop | mcn = disk.ChildrenNeeded() |
1249 | fc1dc9d7 | Iustin Pop | if mcn == -1: |
1250 | fc1dc9d7 | Iustin Pop | mcn = 0 # max number of Nones allowed |
1251 | fc1dc9d7 | Iustin Pop | else:
|
1252 | fc1dc9d7 | Iustin Pop | mcn = len(disk.children) - mcn # max number of Nones |
1253 | a8083063 | Iustin Pop | for chld_disk in disk.children: |
1254 | fc1dc9d7 | Iustin Pop | try:
|
1255 | fc1dc9d7 | Iustin Pop | cdev = _RecursiveAssembleBD(chld_disk, owner, as_primary) |
1256 | fc1dc9d7 | Iustin Pop | except errors.BlockDeviceError, err:
|
1257 | 7803d4d3 | Iustin Pop | if children.count(None) >= mcn: |
1258 | fc1dc9d7 | Iustin Pop | raise
|
1259 | fc1dc9d7 | Iustin Pop | cdev = None
|
1260 | 1063abd1 | Iustin Pop | logging.error("Error in child activation (but continuing): %s",
|
1261 | 1063abd1 | Iustin Pop | str(err))
|
1262 | fc1dc9d7 | Iustin Pop | children.append(cdev) |
1263 | a8083063 | Iustin Pop | |
1264 | a8083063 | Iustin Pop | if as_primary or disk.AssembleOnSecondary(): |
1265 | 464f8daf | Iustin Pop | r_dev = bdev.Assemble(disk.dev_type, disk.physical_id, children, disk.size) |
1266 | e31c43f7 | Michael Hanselmann | r_dev.SetSyncSpeed(constants.SYNC_SPEED) |
1267 | a8083063 | Iustin Pop | result = r_dev |
1268 | a8083063 | Iustin Pop | if as_primary or disk.OpenOnSecondary(): |
1269 | a8083063 | Iustin Pop | r_dev.Open() |
1270 | 3f78eef2 | Iustin Pop | DevCacheManager.UpdateCache(r_dev.dev_path, owner, |
1271 | 3f78eef2 | Iustin Pop | as_primary, disk.iv_name) |
1272 | 3f78eef2 | Iustin Pop | |
1273 | a8083063 | Iustin Pop | else:
|
1274 | a8083063 | Iustin Pop | result = True
|
1275 | a8083063 | Iustin Pop | return result
|
1276 | a8083063 | Iustin Pop | |
1277 | a8083063 | Iustin Pop | |
1278 | 821d1bd1 | Iustin Pop | def BlockdevAssemble(disk, owner, as_primary): |
1279 | a8083063 | Iustin Pop | """Activate a block device for an instance.
|
1280 | a8083063 | Iustin Pop |
|
1281 | a8083063 | Iustin Pop | This is a wrapper over _RecursiveAssembleBD.
|
1282 | a8083063 | Iustin Pop |
|
1283 | b1206984 | Iustin Pop | @rtype: str or boolean
|
1284 | b1206984 | Iustin Pop | @return: a C{/dev/...} path for primary nodes, and
|
1285 | b1206984 | Iustin Pop | C{True} for secondary nodes
|
1286 | a8083063 | Iustin Pop |
|
1287 | a8083063 | Iustin Pop | """
|
1288 | 53c14ef1 | Iustin Pop | try:
|
1289 | 53c14ef1 | Iustin Pop | result = _RecursiveAssembleBD(disk, owner, as_primary) |
1290 | 53c14ef1 | Iustin Pop | if isinstance(result, bdev.BlockDev): |
1291 | 53c14ef1 | Iustin Pop | result = result.dev_path |
1292 | 53c14ef1 | Iustin Pop | except errors.BlockDeviceError, err:
|
1293 | afdc3985 | Iustin Pop | _Fail("Error while assembling disk: %s", err, exc=True) |
1294 | afdc3985 | Iustin Pop | |
1295 | c26a6bd2 | Iustin Pop | return result
|
1296 | a8083063 | Iustin Pop | |
1297 | a8083063 | Iustin Pop | |
1298 | 821d1bd1 | Iustin Pop | def BlockdevShutdown(disk): |
1299 | a8083063 | Iustin Pop | """Shut down a block device.
|
1300 | a8083063 | Iustin Pop |
|
1301 | 5bbd3f7f | Michael Hanselmann | First, if the device is assembled (Attach() is successful), then
|
1302 | c41eea6e | Iustin Pop | the device is shutdown. Then the children of the device are
|
1303 | c41eea6e | Iustin Pop | shutdown.
|
1304 | a8083063 | Iustin Pop |
|
1305 | a8083063 | Iustin Pop | This function is called recursively. Note that we don't cache the
|
1306 | a8083063 | Iustin Pop | children or such, as oppossed to assemble, shutdown of different
|
1307 | a8083063 | Iustin Pop | devices doesn't require that the upper device was active.
|
1308 | a8083063 | Iustin Pop |
|
1309 | 10c2650b | Iustin Pop | @type disk: L{objects.Disk}
|
1310 | 10c2650b | Iustin Pop | @param disk: the description of the disk we should
|
1311 | 10c2650b | Iustin Pop | shutdown
|
1312 | c26a6bd2 | Iustin Pop | @rtype: None
|
1313 | 10c2650b | Iustin Pop |
|
1314 | a8083063 | Iustin Pop | """
|
1315 | cacfd1fd | Iustin Pop | msgs = [] |
1316 | a8083063 | Iustin Pop | r_dev = _RecursiveFindBD(disk) |
1317 | a8083063 | Iustin Pop | if r_dev is not None: |
1318 | 3f78eef2 | Iustin Pop | r_path = r_dev.dev_path |
1319 | cacfd1fd | Iustin Pop | try:
|
1320 | 746f7476 | Iustin Pop | r_dev.Shutdown() |
1321 | 746f7476 | Iustin Pop | DevCacheManager.RemoveCache(r_path) |
1322 | cacfd1fd | Iustin Pop | except errors.BlockDeviceError, err:
|
1323 | cacfd1fd | Iustin Pop | msgs.append(str(err))
|
1324 | 746f7476 | Iustin Pop | |
1325 | a8083063 | Iustin Pop | if disk.children:
|
1326 | a8083063 | Iustin Pop | for child in disk.children: |
1327 | c26a6bd2 | Iustin Pop | try:
|
1328 | c26a6bd2 | Iustin Pop | BlockdevShutdown(child) |
1329 | c26a6bd2 | Iustin Pop | except RPCFail, err:
|
1330 | c26a6bd2 | Iustin Pop | msgs.append(str(err))
|
1331 | 746f7476 | Iustin Pop | |
1332 | c26a6bd2 | Iustin Pop | if msgs:
|
1333 | afdc3985 | Iustin Pop | _Fail("; ".join(msgs))
|
1334 | a8083063 | Iustin Pop | |
1335 | a8083063 | Iustin Pop | |
1336 | 821d1bd1 | Iustin Pop | def BlockdevAddchildren(parent_cdev, new_cdevs): |
1337 | 153d9724 | Iustin Pop | """Extend a mirrored block device.
|
1338 | a8083063 | Iustin Pop |
|
1339 | 10c2650b | Iustin Pop | @type parent_cdev: L{objects.Disk}
|
1340 | 10c2650b | Iustin Pop | @param parent_cdev: the disk to which we should add children
|
1341 | 10c2650b | Iustin Pop | @type new_cdevs: list of L{objects.Disk}
|
1342 | 10c2650b | Iustin Pop | @param new_cdevs: the list of children which we should add
|
1343 | c26a6bd2 | Iustin Pop | @rtype: None
|
1344 | 10c2650b | Iustin Pop |
|
1345 | a8083063 | Iustin Pop | """
|
1346 | bca2e7f4 | Iustin Pop | parent_bdev = _RecursiveFindBD(parent_cdev) |
1347 | 153d9724 | Iustin Pop | if parent_bdev is None: |
1348 | 2cc6781a | Iustin Pop | _Fail("Can't find parent device '%s' in add children", parent_cdev)
|
1349 | 153d9724 | Iustin Pop | new_bdevs = [_RecursiveFindBD(disk) for disk in new_cdevs] |
1350 | 153d9724 | Iustin Pop | if new_bdevs.count(None) > 0: |
1351 | 2cc6781a | Iustin Pop | _Fail("Can't find new device(s) to add: %s:%s", new_bdevs, new_cdevs)
|
1352 | 153d9724 | Iustin Pop | parent_bdev.AddChildren(new_bdevs) |
1353 | a8083063 | Iustin Pop | |
1354 | a8083063 | Iustin Pop | |
1355 | 821d1bd1 | Iustin Pop | def BlockdevRemovechildren(parent_cdev, new_cdevs): |
1356 | 153d9724 | Iustin Pop | """Shrink a mirrored block device.
|
1357 | a8083063 | Iustin Pop |
|
1358 | 10c2650b | Iustin Pop | @type parent_cdev: L{objects.Disk}
|
1359 | 10c2650b | Iustin Pop | @param parent_cdev: the disk from which we should remove children
|
1360 | 10c2650b | Iustin Pop | @type new_cdevs: list of L{objects.Disk}
|
1361 | 10c2650b | Iustin Pop | @param new_cdevs: the list of children which we should remove
|
1362 | c26a6bd2 | Iustin Pop | @rtype: None
|
1363 | 10c2650b | Iustin Pop |
|
1364 | a8083063 | Iustin Pop | """
|
1365 | 153d9724 | Iustin Pop | parent_bdev = _RecursiveFindBD(parent_cdev) |
1366 | 153d9724 | Iustin Pop | if parent_bdev is None: |
1367 | 2cc6781a | Iustin Pop | _Fail("Can't find parent device '%s' in remove children", parent_cdev)
|
1368 | e739bd57 | Iustin Pop | devs = [] |
1369 | e739bd57 | Iustin Pop | for disk in new_cdevs: |
1370 | e739bd57 | Iustin Pop | rpath = disk.StaticDevPath() |
1371 | e739bd57 | Iustin Pop | if rpath is None: |
1372 | e739bd57 | Iustin Pop | bd = _RecursiveFindBD(disk) |
1373 | e739bd57 | Iustin Pop | if bd is None: |
1374 | 2cc6781a | Iustin Pop | _Fail("Can't find device %s while removing children", disk)
|
1375 | e739bd57 | Iustin Pop | else:
|
1376 | e739bd57 | Iustin Pop | devs.append(bd.dev_path) |
1377 | e739bd57 | Iustin Pop | else:
|
1378 | e739bd57 | Iustin Pop | devs.append(rpath) |
1379 | e739bd57 | Iustin Pop | parent_bdev.RemoveChildren(devs) |
1380 | a8083063 | Iustin Pop | |
1381 | a8083063 | Iustin Pop | |
1382 | 821d1bd1 | Iustin Pop | def BlockdevGetmirrorstatus(disks): |
1383 | a8083063 | Iustin Pop | """Get the mirroring status of a list of devices.
|
1384 | a8083063 | Iustin Pop |
|
1385 | 10c2650b | Iustin Pop | @type disks: list of L{objects.Disk}
|
1386 | 10c2650b | Iustin Pop | @param disks: the list of disks which we should query
|
1387 | 10c2650b | Iustin Pop | @rtype: disk
|
1388 | 10c2650b | Iustin Pop | @return:
|
1389 | 10c2650b | Iustin Pop | a list of (mirror_done, estimated_time) tuples, which
|
1390 | c41eea6e | Iustin Pop | are the result of L{bdev.BlockDev.CombinedSyncStatus}
|
1391 | 10c2650b | Iustin Pop | @raise errors.BlockDeviceError: if any of the disks cannot be
|
1392 | 10c2650b | Iustin Pop | found
|
1393 | a8083063 | Iustin Pop |
|
1394 | a8083063 | Iustin Pop | """
|
1395 | a8083063 | Iustin Pop | stats = [] |
1396 | a8083063 | Iustin Pop | for dsk in disks: |
1397 | a8083063 | Iustin Pop | rbd = _RecursiveFindBD(dsk) |
1398 | a8083063 | Iustin Pop | if rbd is None: |
1399 | 3efa9051 | Iustin Pop | _Fail("Can't find device %s", dsk)
|
1400 | 96acbc09 | Michael Hanselmann | |
1401 | 36145b12 | Michael Hanselmann | stats.append(rbd.CombinedSyncStatus()) |
1402 | 96acbc09 | Michael Hanselmann | |
1403 | c26a6bd2 | Iustin Pop | return stats
|
1404 | a8083063 | Iustin Pop | |
1405 | a8083063 | Iustin Pop | |
1406 | bca2e7f4 | Iustin Pop | def _RecursiveFindBD(disk): |
1407 | a8083063 | Iustin Pop | """Check if a device is activated.
|
1408 | a8083063 | Iustin Pop |
|
1409 | 5bbd3f7f | Michael Hanselmann | If so, return information about the real device.
|
1410 | a8083063 | Iustin Pop |
|
1411 | 10c2650b | Iustin Pop | @type disk: L{objects.Disk}
|
1412 | 10c2650b | Iustin Pop | @param disk: the disk object we need to find
|
1413 | a8083063 | Iustin Pop |
|
1414 | 10c2650b | Iustin Pop | @return: None if the device can't be found,
|
1415 | 10c2650b | Iustin Pop | otherwise the device instance
|
1416 | a8083063 | Iustin Pop |
|
1417 | a8083063 | Iustin Pop | """
|
1418 | a8083063 | Iustin Pop | children = [] |
1419 | a8083063 | Iustin Pop | if disk.children:
|
1420 | a8083063 | Iustin Pop | for chdisk in disk.children: |
1421 | a8083063 | Iustin Pop | children.append(_RecursiveFindBD(chdisk)) |
1422 | a8083063 | Iustin Pop | |
1423 | 464f8daf | Iustin Pop | return bdev.FindDevice(disk.dev_type, disk.physical_id, children, disk.size)
|
1424 | a8083063 | Iustin Pop | |
1425 | a8083063 | Iustin Pop | |
1426 | 821d1bd1 | Iustin Pop | def BlockdevFind(disk): |
1427 | a8083063 | Iustin Pop | """Check if a device is activated.
|
1428 | a8083063 | Iustin Pop |
|
1429 | 5bbd3f7f | Michael Hanselmann | If it is, return information about the real device.
|
1430 | a8083063 | Iustin Pop |
|
1431 | 10c2650b | Iustin Pop | @type disk: L{objects.Disk}
|
1432 | 10c2650b | Iustin Pop | @param disk: the disk to find
|
1433 | 96acbc09 | Michael Hanselmann | @rtype: None or objects.BlockDevStatus
|
1434 | 96acbc09 | Michael Hanselmann | @return: None if the disk cannot be found, otherwise a the current
|
1435 | 96acbc09 | Michael Hanselmann | information
|
1436 | a8083063 | Iustin Pop |
|
1437 | a8083063 | Iustin Pop | """
|
1438 | 23829f6f | Iustin Pop | try:
|
1439 | 23829f6f | Iustin Pop | rbd = _RecursiveFindBD(disk) |
1440 | 23829f6f | Iustin Pop | except errors.BlockDeviceError, err:
|
1441 | 2cc6781a | Iustin Pop | _Fail("Failed to find device: %s", err, exc=True) |
1442 | 96acbc09 | Michael Hanselmann | |
1443 | a8083063 | Iustin Pop | if rbd is None: |
1444 | c26a6bd2 | Iustin Pop | return None |
1445 | 96acbc09 | Michael Hanselmann | |
1446 | 96acbc09 | Michael Hanselmann | return rbd.GetSyncStatus()
|
1447 | a8083063 | Iustin Pop | |
1448 | a8083063 | Iustin Pop | |
1449 | 968a7623 | Iustin Pop | def BlockdevGetsize(disks): |
1450 | 968a7623 | Iustin Pop | """Computes the size of the given disks.
|
1451 | 968a7623 | Iustin Pop |
|
1452 | 968a7623 | Iustin Pop | If a disk is not found, returns None instead.
|
1453 | 968a7623 | Iustin Pop |
|
1454 | 968a7623 | Iustin Pop | @type disks: list of L{objects.Disk}
|
1455 | 968a7623 | Iustin Pop | @param disks: the list of disk to compute the size for
|
1456 | 968a7623 | Iustin Pop | @rtype: list
|
1457 | 968a7623 | Iustin Pop | @return: list with elements None if the disk cannot be found,
|
1458 | 968a7623 | Iustin Pop | otherwise the size
|
1459 | 968a7623 | Iustin Pop |
|
1460 | 968a7623 | Iustin Pop | """
|
1461 | 968a7623 | Iustin Pop | result = [] |
1462 | 968a7623 | Iustin Pop | for cf in disks: |
1463 | 968a7623 | Iustin Pop | try:
|
1464 | 968a7623 | Iustin Pop | rbd = _RecursiveFindBD(cf) |
1465 | 968a7623 | Iustin Pop | except errors.BlockDeviceError, err:
|
1466 | 968a7623 | Iustin Pop | result.append(None)
|
1467 | 968a7623 | Iustin Pop | continue
|
1468 | 968a7623 | Iustin Pop | if rbd is None: |
1469 | 968a7623 | Iustin Pop | result.append(None)
|
1470 | 968a7623 | Iustin Pop | else:
|
1471 | 968a7623 | Iustin Pop | result.append(rbd.GetActualSize()) |
1472 | 968a7623 | Iustin Pop | return result
|
1473 | 968a7623 | Iustin Pop | |
1474 | 968a7623 | Iustin Pop | |
1475 | 858f3d18 | Iustin Pop | def BlockdevExport(disk, dest_node, dest_path, cluster_name): |
1476 | 858f3d18 | Iustin Pop | """Export a block device to a remote node.
|
1477 | 858f3d18 | Iustin Pop |
|
1478 | 858f3d18 | Iustin Pop | @type disk: L{objects.Disk}
|
1479 | 858f3d18 | Iustin Pop | @param disk: the description of the disk to export
|
1480 | 858f3d18 | Iustin Pop | @type dest_node: str
|
1481 | 858f3d18 | Iustin Pop | @param dest_node: the destination node to export to
|
1482 | 858f3d18 | Iustin Pop | @type dest_path: str
|
1483 | 858f3d18 | Iustin Pop | @param dest_path: the destination path on the target node
|
1484 | 858f3d18 | Iustin Pop | @type cluster_name: str
|
1485 | 858f3d18 | Iustin Pop | @param cluster_name: the cluster name, needed for SSH hostalias
|
1486 | 858f3d18 | Iustin Pop | @rtype: None
|
1487 | 858f3d18 | Iustin Pop |
|
1488 | 858f3d18 | Iustin Pop | """
|
1489 | 858f3d18 | Iustin Pop | real_disk = _RecursiveFindBD(disk) |
1490 | 858f3d18 | Iustin Pop | if real_disk is None: |
1491 | 858f3d18 | Iustin Pop | _Fail("Block device '%s' is not set up", disk)
|
1492 | 858f3d18 | Iustin Pop | |
1493 | 858f3d18 | Iustin Pop | real_disk.Open() |
1494 | 858f3d18 | Iustin Pop | |
1495 | 858f3d18 | Iustin Pop | # the block size on the read dd is 1MiB to match our units
|
1496 | 858f3d18 | Iustin Pop | expcmd = utils.BuildShellCmd("set -e; set -o pipefail; "
|
1497 | 858f3d18 | Iustin Pop | "dd if=%s bs=1048576 count=%s",
|
1498 | 858f3d18 | Iustin Pop | real_disk.dev_path, str(disk.size))
|
1499 | 858f3d18 | Iustin Pop | |
1500 | 858f3d18 | Iustin Pop | # we set here a smaller block size as, due to ssh buffering, more
|
1501 | 858f3d18 | Iustin Pop | # than 64-128k will mostly ignored; we use nocreat to fail if the
|
1502 | 858f3d18 | Iustin Pop | # device is not already there or we pass a wrong path; we use
|
1503 | 858f3d18 | Iustin Pop | # notrunc to no attempt truncate on an LV device; we use oflag=dsync
|
1504 | 858f3d18 | Iustin Pop | # to not buffer too much memory; this means that at best, we flush
|
1505 | 858f3d18 | Iustin Pop | # every 64k, which will not be very fast
|
1506 | 858f3d18 | Iustin Pop | destcmd = utils.BuildShellCmd("dd of=%s conv=nocreat,notrunc bs=65536"
|
1507 | 858f3d18 | Iustin Pop | " oflag=dsync", dest_path)
|
1508 | 858f3d18 | Iustin Pop | |
1509 | 858f3d18 | Iustin Pop | remotecmd = _GetSshRunner(cluster_name).BuildCmd(dest_node, |
1510 | 858f3d18 | Iustin Pop | constants.GANETI_RUNAS, |
1511 | 858f3d18 | Iustin Pop | destcmd) |
1512 | 858f3d18 | Iustin Pop | |
1513 | 858f3d18 | Iustin Pop | # all commands have been checked, so we're safe to combine them
|
1514 | 858f3d18 | Iustin Pop | command = '|'.join([expcmd, utils.ShellQuoteArgs(remotecmd)])
|
1515 | 858f3d18 | Iustin Pop | |
1516 | 858f3d18 | Iustin Pop | result = utils.RunCmd(["bash", "-c", command]) |
1517 | 858f3d18 | Iustin Pop | |
1518 | 858f3d18 | Iustin Pop | if result.failed:
|
1519 | 858f3d18 | Iustin Pop | _Fail("Disk copy command '%s' returned error: %s"
|
1520 | 858f3d18 | Iustin Pop | " output: %s", command, result.fail_reason, result.output)
|
1521 | 858f3d18 | Iustin Pop | |
1522 | 858f3d18 | Iustin Pop | |
1523 | a8083063 | Iustin Pop | def UploadFile(file_name, data, mode, uid, gid, atime, mtime): |
1524 | a8083063 | Iustin Pop | """Write a file to the filesystem.
|
1525 | a8083063 | Iustin Pop |
|
1526 | a8083063 | Iustin Pop | This allows the master to overwrite(!) a file. It will only perform
|
1527 | a8083063 | Iustin Pop | the operation if the file belongs to a list of configuration files.
|
1528 | a8083063 | Iustin Pop |
|
1529 | 10c2650b | Iustin Pop | @type file_name: str
|
1530 | 10c2650b | Iustin Pop | @param file_name: the target file name
|
1531 | 10c2650b | Iustin Pop | @type data: str
|
1532 | 10c2650b | Iustin Pop | @param data: the new contents of the file
|
1533 | 10c2650b | Iustin Pop | @type mode: int
|
1534 | 10c2650b | Iustin Pop | @param mode: the mode to give the file (can be None)
|
1535 | 10c2650b | Iustin Pop | @type uid: int
|
1536 | 10c2650b | Iustin Pop | @param uid: the owner of the file (can be -1 for default)
|
1537 | 10c2650b | Iustin Pop | @type gid: int
|
1538 | 10c2650b | Iustin Pop | @param gid: the group of the file (can be -1 for default)
|
1539 | 10c2650b | Iustin Pop | @type atime: float
|
1540 | 10c2650b | Iustin Pop | @param atime: the atime to set on the file (can be None)
|
1541 | 10c2650b | Iustin Pop | @type mtime: float
|
1542 | 10c2650b | Iustin Pop | @param mtime: the mtime to set on the file (can be None)
|
1543 | c26a6bd2 | Iustin Pop | @rtype: None
|
1544 | 10c2650b | Iustin Pop |
|
1545 | a8083063 | Iustin Pop | """
|
1546 | a8083063 | Iustin Pop | if not os.path.isabs(file_name): |
1547 | 2cc6781a | Iustin Pop | _Fail("Filename passed to UploadFile is not absolute: '%s'", file_name)
|
1548 | a8083063 | Iustin Pop | |
1549 | 360b0dc2 | Iustin Pop | if file_name not in _ALLOWED_UPLOAD_FILES: |
1550 | 2cc6781a | Iustin Pop | _Fail("Filename passed to UploadFile not in allowed upload targets: '%s'",
|
1551 | 2cc6781a | Iustin Pop | file_name) |
1552 | a8083063 | Iustin Pop | |
1553 | 12bce260 | Michael Hanselmann | raw_data = _Decompress(data) |
1554 | 12bce260 | Michael Hanselmann | |
1555 | 12bce260 | Michael Hanselmann | utils.WriteFile(file_name, data=raw_data, mode=mode, uid=uid, gid=gid, |
1556 | 41a57aab | Michael Hanselmann | atime=atime, mtime=mtime) |
1557 | a8083063 | Iustin Pop | |
1558 | 386b57af | Iustin Pop | |
1559 | 03d1dba2 | Michael Hanselmann | def WriteSsconfFiles(values): |
1560 | 89b14f05 | Iustin Pop | """Update all ssconf files.
|
1561 | 89b14f05 | Iustin Pop |
|
1562 | 89b14f05 | Iustin Pop | Wrapper around the SimpleStore.WriteFiles.
|
1563 | 89b14f05 | Iustin Pop |
|
1564 | 89b14f05 | Iustin Pop | """
|
1565 | 89b14f05 | Iustin Pop | ssconf.SimpleStore().WriteFiles(values) |
1566 | 6ddc95ec | Michael Hanselmann | |
1567 | 6ddc95ec | Michael Hanselmann | |
1568 | a8083063 | Iustin Pop | def _ErrnoOrStr(err): |
1569 | a8083063 | Iustin Pop | """Format an EnvironmentError exception.
|
1570 | a8083063 | Iustin Pop |
|
1571 | 10c2650b | Iustin Pop | If the L{err} argument has an errno attribute, it will be looked up
|
1572 | 10c2650b | Iustin Pop | and converted into a textual C{E...} description. Otherwise the
|
1573 | 10c2650b | Iustin Pop | string representation of the error will be returned.
|
1574 | 10c2650b | Iustin Pop |
|
1575 | 10c2650b | Iustin Pop | @type err: L{EnvironmentError}
|
1576 | 10c2650b | Iustin Pop | @param err: the exception to format
|
1577 | a8083063 | Iustin Pop |
|
1578 | a8083063 | Iustin Pop | """
|
1579 | a8083063 | Iustin Pop | if hasattr(err, 'errno'): |
1580 | a8083063 | Iustin Pop | detail = errno.errorcode[err.errno] |
1581 | a8083063 | Iustin Pop | else:
|
1582 | a8083063 | Iustin Pop | detail = str(err)
|
1583 | a8083063 | Iustin Pop | return detail
|
1584 | a8083063 | Iustin Pop | |
1585 | 5d0fe286 | Iustin Pop | |
1586 | 7ead9575 | Guido Trotter | def _OSOndiskAPIVersion(name, os_dir): |
1587 | 2f8598a5 | Alexander Schreiber | """Compute and return the API version of a given OS.
|
1588 | a8083063 | Iustin Pop |
|
1589 | 10c2650b | Iustin Pop | This function will try to read the API version of the OS given by
|
1590 | 7c3d51d4 | Guido Trotter | the 'name' parameter and residing in the 'os_dir' directory.
|
1591 | 7c3d51d4 | Guido Trotter |
|
1592 | 10c2650b | Iustin Pop | @type name: str
|
1593 | 10c2650b | Iustin Pop | @param name: the OS name we should look for
|
1594 | 10c2650b | Iustin Pop | @type os_dir: str
|
1595 | 10c2650b | Iustin Pop | @param os_dir: the directory inwhich we should look for the OS
|
1596 | 8e70b181 | Iustin Pop | @rtype: tuple
|
1597 | 8e70b181 | Iustin Pop | @return: tuple (status, data) with status denoting the validity and
|
1598 | 8e70b181 | Iustin Pop | data holding either the vaid versions or an error message
|
1599 | a8083063 | Iustin Pop |
|
1600 | a8083063 | Iustin Pop | """
|
1601 | a8083063 | Iustin Pop | api_file = os.path.sep.join([os_dir, "ganeti_api_version"])
|
1602 | a8083063 | Iustin Pop | |
1603 | a8083063 | Iustin Pop | try:
|
1604 | a8083063 | Iustin Pop | st = os.stat(api_file) |
1605 | a8083063 | Iustin Pop | except EnvironmentError, err: |
1606 | 255dcebd | Iustin Pop | return False, ("Required file 'ganeti_api_version' file not" |
1607 | 255dcebd | Iustin Pop | " found under path %s: %s" % (os_dir, _ErrnoOrStr(err)))
|
1608 | a8083063 | Iustin Pop | |
1609 | a8083063 | Iustin Pop | if not stat.S_ISREG(stat.S_IFMT(st.st_mode)): |
1610 | 255dcebd | Iustin Pop | return False, ("File 'ganeti_api_version' file at %s is not" |
1611 | 255dcebd | Iustin Pop | " a regular file" % os_dir)
|
1612 | a8083063 | Iustin Pop | |
1613 | a8083063 | Iustin Pop | try:
|
1614 | 3374afa9 | Guido Trotter | api_versions = utils.ReadFile(api_file).splitlines() |
1615 | a8083063 | Iustin Pop | except EnvironmentError, err: |
1616 | 255dcebd | Iustin Pop | return False, ("Error while reading the API version file at %s: %s" % |
1617 | 255dcebd | Iustin Pop | (api_file, _ErrnoOrStr(err))) |
1618 | a8083063 | Iustin Pop | |
1619 | a8083063 | Iustin Pop | try:
|
1620 | 63b9b186 | Guido Trotter | api_versions = [int(version.strip()) for version in api_versions] |
1621 | a8083063 | Iustin Pop | except (TypeError, ValueError), err: |
1622 | 255dcebd | Iustin Pop | return False, ("API version(s) can't be converted to integer: %s" % |
1623 | 255dcebd | Iustin Pop | str(err))
|
1624 | a8083063 | Iustin Pop | |
1625 | 255dcebd | Iustin Pop | return True, api_versions |
1626 | a8083063 | Iustin Pop | |
1627 | 386b57af | Iustin Pop | |
1628 | 7c3d51d4 | Guido Trotter | def DiagnoseOS(top_dirs=None): |
1629 | a8083063 | Iustin Pop | """Compute the validity for all OSes.
|
1630 | a8083063 | Iustin Pop |
|
1631 | 10c2650b | Iustin Pop | @type top_dirs: list
|
1632 | 10c2650b | Iustin Pop | @param top_dirs: the list of directories in which to
|
1633 | 10c2650b | Iustin Pop | search (if not given defaults to
|
1634 | 10c2650b | Iustin Pop | L{constants.OS_SEARCH_PATH})
|
1635 | 10c2650b | Iustin Pop | @rtype: list of L{objects.OS}
|
1636 | 255dcebd | Iustin Pop | @return: a list of tuples (name, path, status, diagnose)
|
1637 | 255dcebd | Iustin Pop | for all (potential) OSes under all search paths, where:
|
1638 | 255dcebd | Iustin Pop | - name is the (potential) OS name
|
1639 | 255dcebd | Iustin Pop | - path is the full path to the OS
|
1640 | 255dcebd | Iustin Pop | - status True/False is the validity of the OS
|
1641 | 255dcebd | Iustin Pop | - diagnose is the error message for an invalid OS, otherwise empty
|
1642 | a8083063 | Iustin Pop |
|
1643 | a8083063 | Iustin Pop | """
|
1644 | 7c3d51d4 | Guido Trotter | if top_dirs is None: |
1645 | 7c3d51d4 | Guido Trotter | top_dirs = constants.OS_SEARCH_PATH |
1646 | a8083063 | Iustin Pop | |
1647 | a8083063 | Iustin Pop | result = [] |
1648 | 65fe4693 | Iustin Pop | for dir_name in top_dirs: |
1649 | 65fe4693 | Iustin Pop | if os.path.isdir(dir_name):
|
1650 | 7c3d51d4 | Guido Trotter | try:
|
1651 | 65fe4693 | Iustin Pop | f_names = utils.ListVisibleFiles(dir_name) |
1652 | 7c3d51d4 | Guido Trotter | except EnvironmentError, err: |
1653 | 29921401 | Iustin Pop | logging.exception("Can't list the OS directory %s: %s", dir_name, err)
|
1654 | 7c3d51d4 | Guido Trotter | break
|
1655 | 7c3d51d4 | Guido Trotter | for name in f_names: |
1656 | 255dcebd | Iustin Pop | os_path = os.path.sep.join([dir_name, name]) |
1657 | 255dcebd | Iustin Pop | status, os_inst = _TryOSFromDisk(name, base_dir=dir_name) |
1658 | 255dcebd | Iustin Pop | if status:
|
1659 | 255dcebd | Iustin Pop | diagnose = ""
|
1660 | 255dcebd | Iustin Pop | else:
|
1661 | 255dcebd | Iustin Pop | diagnose = os_inst |
1662 | 255dcebd | Iustin Pop | result.append((name, os_path, status, diagnose)) |
1663 | a8083063 | Iustin Pop | |
1664 | c26a6bd2 | Iustin Pop | return result
|
1665 | a8083063 | Iustin Pop | |
1666 | a8083063 | Iustin Pop | |
1667 | 255dcebd | Iustin Pop | def _TryOSFromDisk(name, base_dir=None): |
1668 | a8083063 | Iustin Pop | """Create an OS instance from disk.
|
1669 | a8083063 | Iustin Pop |
|
1670 | a8083063 | Iustin Pop | This function will return an OS instance if the given name is a
|
1671 | 8e70b181 | Iustin Pop | valid OS name.
|
1672 | a8083063 | Iustin Pop |
|
1673 | 8ee4dc80 | Guido Trotter | @type base_dir: string
|
1674 | 8ee4dc80 | Guido Trotter | @keyword base_dir: Base directory containing OS installations.
|
1675 | 8ee4dc80 | Guido Trotter | Defaults to a search in all the OS_SEARCH_PATH dirs.
|
1676 | 255dcebd | Iustin Pop | @rtype: tuple
|
1677 | 255dcebd | Iustin Pop | @return: success and either the OS instance if we find a valid one,
|
1678 | 255dcebd | Iustin Pop | or error message
|
1679 | 7c3d51d4 | Guido Trotter |
|
1680 | a8083063 | Iustin Pop | """
|
1681 | 56bcd3f4 | Guido Trotter | if base_dir is None: |
1682 | 57c177af | Iustin Pop | os_dir = utils.FindFile(name, constants.OS_SEARCH_PATH, os.path.isdir) |
1683 | c34c0cfd | Iustin Pop | if os_dir is None: |
1684 | 255dcebd | Iustin Pop | return False, "Directory for OS %s not found in search path" % name |
1685 | c34c0cfd | Iustin Pop | else:
|
1686 | c34c0cfd | Iustin Pop | os_dir = os.path.sep.join([base_dir, name]) |
1687 | a8083063 | Iustin Pop | |
1688 | 7ead9575 | Guido Trotter | status, api_versions = _OSOndiskAPIVersion(name, os_dir) |
1689 | 255dcebd | Iustin Pop | if not status: |
1690 | 255dcebd | Iustin Pop | # push the error up
|
1691 | 255dcebd | Iustin Pop | return status, api_versions
|
1692 | a8083063 | Iustin Pop | |
1693 | d1a7d66f | Guido Trotter | if not constants.OS_API_VERSIONS.intersection(api_versions): |
1694 | 255dcebd | Iustin Pop | return False, ("API version mismatch for path '%s': found %s, want %s." % |
1695 | d1a7d66f | Guido Trotter | (os_dir, api_versions, constants.OS_API_VERSIONS)) |
1696 | a8083063 | Iustin Pop | |
1697 | a8083063 | Iustin Pop | # OS Scripts dictionary, we will populate it with the actual script names
|
1698 | 62dbbe7e | Guido Trotter | os_scripts = dict.fromkeys(constants.OS_SCRIPTS)
|
1699 | a8083063 | Iustin Pop | |
1700 | a8083063 | Iustin Pop | for script in os_scripts: |
1701 | a8083063 | Iustin Pop | os_scripts[script] = os.path.sep.join([os_dir, script]) |
1702 | a8083063 | Iustin Pop | |
1703 | a8083063 | Iustin Pop | try:
|
1704 | a8083063 | Iustin Pop | st = os.stat(os_scripts[script]) |
1705 | a8083063 | Iustin Pop | except EnvironmentError, err: |
1706 | 255dcebd | Iustin Pop | return False, ("Script '%s' under path '%s' is missing (%s)" % |
1707 | 255dcebd | Iustin Pop | (script, os_dir, _ErrnoOrStr(err))) |
1708 | a8083063 | Iustin Pop | |
1709 | a8083063 | Iustin Pop | if stat.S_IMODE(st.st_mode) & stat.S_IXUSR != stat.S_IXUSR:
|
1710 | 255dcebd | Iustin Pop | return False, ("Script '%s' under path '%s' is not executable" % |
1711 | 255dcebd | Iustin Pop | (script, os_dir)) |
1712 | a8083063 | Iustin Pop | |
1713 | a8083063 | Iustin Pop | if not stat.S_ISREG(stat.S_IFMT(st.st_mode)): |
1714 | 255dcebd | Iustin Pop | return False, ("Script '%s' under path '%s' is not a regular file" % |
1715 | 255dcebd | Iustin Pop | (script, os_dir)) |
1716 | 255dcebd | Iustin Pop | |
1717 | 8e70b181 | Iustin Pop | os_obj = objects.OS(name=name, path=os_dir, |
1718 | 255dcebd | Iustin Pop | create_script=os_scripts[constants.OS_SCRIPT_CREATE], |
1719 | 255dcebd | Iustin Pop | export_script=os_scripts[constants.OS_SCRIPT_EXPORT], |
1720 | 255dcebd | Iustin Pop | import_script=os_scripts[constants.OS_SCRIPT_IMPORT], |
1721 | 255dcebd | Iustin Pop | rename_script=os_scripts[constants.OS_SCRIPT_RENAME], |
1722 | 255dcebd | Iustin Pop | api_versions=api_versions) |
1723 | 255dcebd | Iustin Pop | return True, os_obj |
1724 | 255dcebd | Iustin Pop | |
1725 | 255dcebd | Iustin Pop | |
1726 | 255dcebd | Iustin Pop | def OSFromDisk(name, base_dir=None): |
1727 | 255dcebd | Iustin Pop | """Create an OS instance from disk.
|
1728 | 255dcebd | Iustin Pop |
|
1729 | 255dcebd | Iustin Pop | This function will return an OS instance if the given name is a
|
1730 | 255dcebd | Iustin Pop | valid OS name. Otherwise, it will raise an appropriate
|
1731 | 255dcebd | Iustin Pop | L{RPCFail} exception, detailing why this is not a valid OS.
|
1732 | 255dcebd | Iustin Pop |
|
1733 | 255dcebd | Iustin Pop | This is just a wrapper over L{_TryOSFromDisk}, which doesn't raise
|
1734 | 255dcebd | Iustin Pop | an exception but returns true/false status data.
|
1735 | 255dcebd | Iustin Pop |
|
1736 | 255dcebd | Iustin Pop | @type base_dir: string
|
1737 | 255dcebd | Iustin Pop | @keyword base_dir: Base directory containing OS installations.
|
1738 | 255dcebd | Iustin Pop | Defaults to a search in all the OS_SEARCH_PATH dirs.
|
1739 | 255dcebd | Iustin Pop | @rtype: L{objects.OS}
|
1740 | 255dcebd | Iustin Pop | @return: the OS instance if we find a valid one
|
1741 | 255dcebd | Iustin Pop | @raise RPCFail: if we don't find a valid OS
|
1742 | 255dcebd | Iustin Pop |
|
1743 | 255dcebd | Iustin Pop | """
|
1744 | 255dcebd | Iustin Pop | status, payload = _TryOSFromDisk(name, base_dir) |
1745 | 255dcebd | Iustin Pop | |
1746 | 255dcebd | Iustin Pop | if not status: |
1747 | 255dcebd | Iustin Pop | _Fail(payload) |
1748 | a8083063 | Iustin Pop | |
1749 | 255dcebd | Iustin Pop | return payload
|
1750 | a8083063 | Iustin Pop | |
1751 | a8083063 | Iustin Pop | |
1752 | d1a7d66f | Guido Trotter | def OSEnvironment(instance, os, debug=0): |
1753 | 2266edb2 | Guido Trotter | """Calculate the environment for an os script.
|
1754 | 2266edb2 | Guido Trotter |
|
1755 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
1756 | 2266edb2 | Guido Trotter | @param instance: target instance for the os script run
|
1757 | d1a7d66f | Guido Trotter | @type os: L{objects.OS}
|
1758 | d1a7d66f | Guido Trotter | @param os: operating system for which the environment is being built
|
1759 | 2266edb2 | Guido Trotter | @type debug: integer
|
1760 | 10c2650b | Iustin Pop | @param debug: debug level (0 or 1, for OS Api 10)
|
1761 | 2266edb2 | Guido Trotter | @rtype: dict
|
1762 | 2266edb2 | Guido Trotter | @return: dict of environment variables
|
1763 | 10c2650b | Iustin Pop | @raise errors.BlockDeviceError: if the block device
|
1764 | 10c2650b | Iustin Pop | cannot be found
|
1765 | 2266edb2 | Guido Trotter |
|
1766 | 2266edb2 | Guido Trotter | """
|
1767 | 2266edb2 | Guido Trotter | result = {} |
1768 | d1a7d66f | Guido Trotter | api_version = max(constants.OS_API_VERSIONS.intersection(os.api_versions))
|
1769 | d1a7d66f | Guido Trotter | result['OS_API_VERSION'] = '%d' % api_version |
1770 | 2266edb2 | Guido Trotter | result['INSTANCE_NAME'] = instance.name
|
1771 | 15552312 | Iustin Pop | result['INSTANCE_OS'] = instance.os
|
1772 | 2266edb2 | Guido Trotter | result['HYPERVISOR'] = instance.hypervisor
|
1773 | 2266edb2 | Guido Trotter | result['DISK_COUNT'] = '%d' % len(instance.disks) |
1774 | 2266edb2 | Guido Trotter | result['NIC_COUNT'] = '%d' % len(instance.nics) |
1775 | 2266edb2 | Guido Trotter | result['DEBUG_LEVEL'] = '%d' % debug |
1776 | 2266edb2 | Guido Trotter | for idx, disk in enumerate(instance.disks): |
1777 | 2266edb2 | Guido Trotter | real_disk = _RecursiveFindBD(disk) |
1778 | 2266edb2 | Guido Trotter | if real_disk is None: |
1779 | 2266edb2 | Guido Trotter | raise errors.BlockDeviceError("Block device '%s' is not set up" % |
1780 | 2266edb2 | Guido Trotter | str(disk))
|
1781 | 2266edb2 | Guido Trotter | real_disk.Open() |
1782 | 2266edb2 | Guido Trotter | result['DISK_%d_PATH' % idx] = real_disk.dev_path
|
1783 | 15552312 | Iustin Pop | result['DISK_%d_ACCESS' % idx] = disk.mode
|
1784 | 2266edb2 | Guido Trotter | if constants.HV_DISK_TYPE in instance.hvparams: |
1785 | 2266edb2 | Guido Trotter | result['DISK_%d_FRONTEND_TYPE' % idx] = \
|
1786 | 2266edb2 | Guido Trotter | instance.hvparams[constants.HV_DISK_TYPE] |
1787 | 2266edb2 | Guido Trotter | if disk.dev_type in constants.LDS_BLOCK: |
1788 | 2266edb2 | Guido Trotter | result['DISK_%d_BACKEND_TYPE' % idx] = 'block' |
1789 | 2266edb2 | Guido Trotter | elif disk.dev_type == constants.LD_FILE:
|
1790 | 2266edb2 | Guido Trotter | result['DISK_%d_BACKEND_TYPE' % idx] = \
|
1791 | 2266edb2 | Guido Trotter | 'file:%s' % disk.physical_id[0] |
1792 | 2266edb2 | Guido Trotter | for idx, nic in enumerate(instance.nics): |
1793 | 2266edb2 | Guido Trotter | result['NIC_%d_MAC' % idx] = nic.mac
|
1794 | 2266edb2 | Guido Trotter | if nic.ip:
|
1795 | 2266edb2 | Guido Trotter | result['NIC_%d_IP' % idx] = nic.ip
|
1796 | 1ba9227f | Guido Trotter | result['NIC_%d_MODE' % idx] = nic.nicparams[constants.NIC_MODE]
|
1797 | 1ba9227f | Guido Trotter | if nic.nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
|
1798 | 1ba9227f | Guido Trotter | result['NIC_%d_BRIDGE' % idx] = nic.nicparams[constants.NIC_LINK]
|
1799 | 1ba9227f | Guido Trotter | if nic.nicparams[constants.NIC_LINK]:
|
1800 | 1ba9227f | Guido Trotter | result['NIC_%d_LINK' % idx] = nic.nicparams[constants.NIC_LINK]
|
1801 | 2266edb2 | Guido Trotter | if constants.HV_NIC_TYPE in instance.hvparams: |
1802 | 2266edb2 | Guido Trotter | result['NIC_%d_FRONTEND_TYPE' % idx] = \
|
1803 | 2266edb2 | Guido Trotter | instance.hvparams[constants.HV_NIC_TYPE] |
1804 | 2266edb2 | Guido Trotter | |
1805 | 67fc3042 | Iustin Pop | for source, kind in [(instance.beparams, "BE"), (instance.hvparams, "HV")]: |
1806 | 67fc3042 | Iustin Pop | for key, value in source.items(): |
1807 | 030b218a | Iustin Pop | result["INSTANCE_%s_%s" % (kind, key)] = str(value) |
1808 | 67fc3042 | Iustin Pop | |
1809 | 2266edb2 | Guido Trotter | return result
|
1810 | a8083063 | Iustin Pop | |
1811 | 821d1bd1 | Iustin Pop | def BlockdevGrow(disk, amount): |
1812 | 594609c0 | Iustin Pop | """Grow a stack of block devices.
|
1813 | 594609c0 | Iustin Pop |
|
1814 | 594609c0 | Iustin Pop | This function is called recursively, with the childrens being the
|
1815 | 10c2650b | Iustin Pop | first ones to resize.
|
1816 | 594609c0 | Iustin Pop |
|
1817 | 10c2650b | Iustin Pop | @type disk: L{objects.Disk}
|
1818 | 10c2650b | Iustin Pop | @param disk: the disk to be grown
|
1819 | 10c2650b | Iustin Pop | @rtype: (status, result)
|
1820 | 10c2650b | Iustin Pop | @return: a tuple with the status of the operation
|
1821 | 10c2650b | Iustin Pop | (True/False), and the errors message if status
|
1822 | 10c2650b | Iustin Pop | is False
|
1823 | 594609c0 | Iustin Pop |
|
1824 | 594609c0 | Iustin Pop | """
|
1825 | 594609c0 | Iustin Pop | r_dev = _RecursiveFindBD(disk) |
1826 | 594609c0 | Iustin Pop | if r_dev is None: |
1827 | afdc3985 | Iustin Pop | _Fail("Cannot find block device %s", disk)
|
1828 | 594609c0 | Iustin Pop | |
1829 | 594609c0 | Iustin Pop | try:
|
1830 | 594609c0 | Iustin Pop | r_dev.Grow(amount) |
1831 | 594609c0 | Iustin Pop | except errors.BlockDeviceError, err:
|
1832 | 2cc6781a | Iustin Pop | _Fail("Failed to grow block device: %s", err, exc=True) |
1833 | 594609c0 | Iustin Pop | |
1834 | 594609c0 | Iustin Pop | |
1835 | 821d1bd1 | Iustin Pop | def BlockdevSnapshot(disk): |
1836 | a8083063 | Iustin Pop | """Create a snapshot copy of a block device.
|
1837 | a8083063 | Iustin Pop |
|
1838 | a8083063 | Iustin Pop | This function is called recursively, and the snapshot is actually created
|
1839 | a8083063 | Iustin Pop | just for the leaf lvm backend device.
|
1840 | a8083063 | Iustin Pop |
|
1841 | e9e9263d | Guido Trotter | @type disk: L{objects.Disk}
|
1842 | e9e9263d | Guido Trotter | @param disk: the disk to be snapshotted
|
1843 | e9e9263d | Guido Trotter | @rtype: string
|
1844 | e9e9263d | Guido Trotter | @return: snapshot disk path
|
1845 | a8083063 | Iustin Pop |
|
1846 | 098c0958 | Michael Hanselmann | """
|
1847 | a8083063 | Iustin Pop | if disk.children:
|
1848 | a8083063 | Iustin Pop | if len(disk.children) == 1: |
1849 | a8083063 | Iustin Pop | # only one child, let's recurse on it
|
1850 | 821d1bd1 | Iustin Pop | return BlockdevSnapshot(disk.children[0]) |
1851 | a8083063 | Iustin Pop | else:
|
1852 | a8083063 | Iustin Pop | # more than one child, choose one that matches
|
1853 | a8083063 | Iustin Pop | for child in disk.children: |
1854 | a8083063 | Iustin Pop | if child.size == disk.size:
|
1855 | a8083063 | Iustin Pop | # return implies breaking the loop
|
1856 | 821d1bd1 | Iustin Pop | return BlockdevSnapshot(child)
|
1857 | fe96220b | Iustin Pop | elif disk.dev_type == constants.LD_LV:
|
1858 | a8083063 | Iustin Pop | r_dev = _RecursiveFindBD(disk) |
1859 | a8083063 | Iustin Pop | if r_dev is not None: |
1860 | a8083063 | Iustin Pop | # let's stay on the safe side and ask for the full size, for now
|
1861 | c26a6bd2 | Iustin Pop | return r_dev.Snapshot(disk.size)
|
1862 | a8083063 | Iustin Pop | else:
|
1863 | 87812fd3 | Iustin Pop | _Fail("Cannot find block device %s", disk)
|
1864 | a8083063 | Iustin Pop | else:
|
1865 | 87812fd3 | Iustin Pop | _Fail("Cannot snapshot non-lvm block device '%s' of type '%s'",
|
1866 | 87812fd3 | Iustin Pop | disk.unique_id, disk.dev_type) |
1867 | a8083063 | Iustin Pop | |
1868 | a8083063 | Iustin Pop | |
1869 | 74c47259 | Iustin Pop | def ExportSnapshot(disk, dest_node, instance, cluster_name, idx): |
1870 | a8083063 | Iustin Pop | """Export a block device snapshot to a remote node.
|
1871 | a8083063 | Iustin Pop |
|
1872 | 74c47259 | Iustin Pop | @type disk: L{objects.Disk}
|
1873 | 74c47259 | Iustin Pop | @param disk: the description of the disk to export
|
1874 | 74c47259 | Iustin Pop | @type dest_node: str
|
1875 | 74c47259 | Iustin Pop | @param dest_node: the destination node to export to
|
1876 | 74c47259 | Iustin Pop | @type instance: L{objects.Instance}
|
1877 | 74c47259 | Iustin Pop | @param instance: the instance object to whom the disk belongs
|
1878 | 74c47259 | Iustin Pop | @type cluster_name: str
|
1879 | 74c47259 | Iustin Pop | @param cluster_name: the cluster name, needed for SSH hostalias
|
1880 | 74c47259 | Iustin Pop | @type idx: int
|
1881 | 74c47259 | Iustin Pop | @param idx: the index of the disk in the instance's disk list,
|
1882 | 74c47259 | Iustin Pop | used to export to the OS scripts environment
|
1883 | c26a6bd2 | Iustin Pop | @rtype: None
|
1884 | a8083063 | Iustin Pop |
|
1885 | 098c0958 | Michael Hanselmann | """
|
1886 | a8083063 | Iustin Pop | inst_os = OSFromDisk(instance.os) |
1887 | d1a7d66f | Guido Trotter | export_env = OSEnvironment(instance, inst_os) |
1888 | d1a7d66f | Guido Trotter | |
1889 | a8083063 | Iustin Pop | export_script = inst_os.export_script |
1890 | a8083063 | Iustin Pop | |
1891 | a8083063 | Iustin Pop | logfile = "%s/exp-%s-%s-%s.log" % (constants.LOG_OS_DIR, inst_os.name,
|
1892 | a8083063 | Iustin Pop | instance.name, int(time.time()))
|
1893 | a8083063 | Iustin Pop | if not os.path.exists(constants.LOG_OS_DIR): |
1894 | a8083063 | Iustin Pop | os.mkdir(constants.LOG_OS_DIR, 0750)
|
1895 | 0607699d | Guido Trotter | real_disk = _RecursiveFindBD(disk) |
1896 | 0607699d | Guido Trotter | if real_disk is None: |
1897 | ba55d062 | Iustin Pop | _Fail("Block device '%s' is not set up", disk)
|
1898 | ba55d062 | Iustin Pop | |
1899 | 0607699d | Guido Trotter | real_disk.Open() |
1900 | 0607699d | Guido Trotter | |
1901 | 0607699d | Guido Trotter | export_env['EXPORT_DEVICE'] = real_disk.dev_path
|
1902 | 74c47259 | Iustin Pop | export_env['EXPORT_INDEX'] = str(idx) |
1903 | a8083063 | Iustin Pop | |
1904 | a8083063 | Iustin Pop | destdir = os.path.join(constants.EXPORT_DIR, instance.name + ".new")
|
1905 | a8083063 | Iustin Pop | destfile = disk.physical_id[1]
|
1906 | a8083063 | Iustin Pop | |
1907 | a8083063 | Iustin Pop | # the target command is built out of three individual commands,
|
1908 | a8083063 | Iustin Pop | # which are joined by pipes; we check each individual command for
|
1909 | a8083063 | Iustin Pop | # valid parameters
|
1910 | a48b08bf | Iustin Pop | expcmd = utils.BuildShellCmd("set -e; set -o pipefail; cd %s; %s 2>%s",
|
1911 | a48b08bf | Iustin Pop | inst_os.path, export_script, logfile) |
1912 | a8083063 | Iustin Pop | |
1913 | a8083063 | Iustin Pop | comprcmd = "gzip"
|
1914 | a8083063 | Iustin Pop | |
1915 | 72f0f7fd | Iustin Pop | destcmd = utils.BuildShellCmd("mkdir -p %s && cat > %s/%s",
|
1916 | 00003458 | Guido Trotter | destdir, destdir, destfile) |
1917 | 62c9ec92 | Iustin Pop | remotecmd = _GetSshRunner(cluster_name).BuildCmd(dest_node, |
1918 | 62c9ec92 | Iustin Pop | constants.GANETI_RUNAS, |
1919 | 62c9ec92 | Iustin Pop | destcmd) |
1920 | a8083063 | Iustin Pop | |
1921 | a8083063 | Iustin Pop | # all commands have been checked, so we're safe to combine them
|
1922 | 72f0f7fd | Iustin Pop | command = '|'.join([expcmd, comprcmd, utils.ShellQuoteArgs(remotecmd)])
|
1923 | a8083063 | Iustin Pop | |
1924 | a48b08bf | Iustin Pop | result = utils.RunCmd(["bash", "-c", command], env=export_env) |
1925 | a8083063 | Iustin Pop | |
1926 | a8083063 | Iustin Pop | if result.failed:
|
1927 | ba55d062 | Iustin Pop | _Fail("OS snapshot export command '%s' returned error: %s"
|
1928 | ba55d062 | Iustin Pop | " output: %s", command, result.fail_reason, result.output)
|
1929 | a8083063 | Iustin Pop | |
1930 | a8083063 | Iustin Pop | |
1931 | a8083063 | Iustin Pop | def FinalizeExport(instance, snap_disks): |
1932 | a8083063 | Iustin Pop | """Write out the export configuration information.
|
1933 | a8083063 | Iustin Pop |
|
1934 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
1935 | 10c2650b | Iustin Pop | @param instance: the instance which we export, used for
|
1936 | 10c2650b | Iustin Pop | saving configuration
|
1937 | 10c2650b | Iustin Pop | @type snap_disks: list of L{objects.Disk}
|
1938 | 10c2650b | Iustin Pop | @param snap_disks: list of snapshot block devices, which
|
1939 | 10c2650b | Iustin Pop | will be used to get the actual name of the dump file
|
1940 | a8083063 | Iustin Pop |
|
1941 | c26a6bd2 | Iustin Pop | @rtype: None
|
1942 | a8083063 | Iustin Pop |
|
1943 | 098c0958 | Michael Hanselmann | """
|
1944 | a8083063 | Iustin Pop | destdir = os.path.join(constants.EXPORT_DIR, instance.name + ".new")
|
1945 | a8083063 | Iustin Pop | finaldestdir = os.path.join(constants.EXPORT_DIR, instance.name) |
1946 | a8083063 | Iustin Pop | |
1947 | a8083063 | Iustin Pop | config = objects.SerializableConfigParser() |
1948 | a8083063 | Iustin Pop | |
1949 | a8083063 | Iustin Pop | config.add_section(constants.INISECT_EXP) |
1950 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'version', '0') |
1951 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'timestamp', '%d' % int(time.time())) |
1952 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'source', instance.primary_node)
|
1953 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'os', instance.os)
|
1954 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'compression', 'gzip') |
1955 | a8083063 | Iustin Pop | |
1956 | a8083063 | Iustin Pop | config.add_section(constants.INISECT_INS) |
1957 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'name', instance.name)
|
1958 | 51de46bf | Iustin Pop | config.set(constants.INISECT_INS, 'memory', '%d' % |
1959 | 51de46bf | Iustin Pop | instance.beparams[constants.BE_MEMORY]) |
1960 | 51de46bf | Iustin Pop | config.set(constants.INISECT_INS, 'vcpus', '%d' % |
1961 | 51de46bf | Iustin Pop | instance.beparams[constants.BE_VCPUS]) |
1962 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'disk_template', instance.disk_template)
|
1963 | 66f93869 | Manuel Franceschini | |
1964 | 95268cc3 | Iustin Pop | nic_total = 0
|
1965 | a8083063 | Iustin Pop | for nic_count, nic in enumerate(instance.nics): |
1966 | 95268cc3 | Iustin Pop | nic_total += 1
|
1967 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'nic%d_mac' %
|
1968 | a8083063 | Iustin Pop | nic_count, '%s' % nic.mac)
|
1969 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'nic%d_ip' % nic_count, '%s' % nic.ip) |
1970 | 38206f3c | Iustin Pop | config.set(constants.INISECT_INS, 'nic%d_bridge' % nic_count,
|
1971 | 38206f3c | Iustin Pop | '%s' % nic.bridge)
|
1972 | a8083063 | Iustin Pop | # TODO: redundant: on load can read nics until it doesn't exist
|
1973 | 95268cc3 | Iustin Pop | config.set(constants.INISECT_INS, 'nic_count' , '%d' % nic_total) |
1974 | a8083063 | Iustin Pop | |
1975 | 726d7d68 | Iustin Pop | disk_total = 0
|
1976 | a8083063 | Iustin Pop | for disk_count, disk in enumerate(snap_disks): |
1977 | 19d7f90a | Guido Trotter | if disk:
|
1978 | 726d7d68 | Iustin Pop | disk_total += 1
|
1979 | 19d7f90a | Guido Trotter | config.set(constants.INISECT_INS, 'disk%d_ivname' % disk_count,
|
1980 | 19d7f90a | Guido Trotter | ('%s' % disk.iv_name))
|
1981 | 19d7f90a | Guido Trotter | config.set(constants.INISECT_INS, 'disk%d_dump' % disk_count,
|
1982 | 19d7f90a | Guido Trotter | ('%s' % disk.physical_id[1])) |
1983 | 19d7f90a | Guido Trotter | config.set(constants.INISECT_INS, 'disk%d_size' % disk_count,
|
1984 | 19d7f90a | Guido Trotter | ('%d' % disk.size))
|
1985 | a8083063 | Iustin Pop | |
1986 | 726d7d68 | Iustin Pop | config.set(constants.INISECT_INS, 'disk_count' , '%d' % disk_total) |
1987 | a8083063 | Iustin Pop | |
1988 | 726d7d68 | Iustin Pop | utils.WriteFile(os.path.join(destdir, constants.EXPORT_CONF_FILE), |
1989 | 726d7d68 | Iustin Pop | data=config.Dumps()) |
1990 | a8083063 | Iustin Pop | shutil.rmtree(finaldestdir, True)
|
1991 | a8083063 | Iustin Pop | shutil.move(destdir, finaldestdir) |
1992 | a8083063 | Iustin Pop | |
1993 | a8083063 | Iustin Pop | |
1994 | a8083063 | Iustin Pop | def ExportInfo(dest): |
1995 | a8083063 | Iustin Pop | """Get export configuration information.
|
1996 | a8083063 | Iustin Pop |
|
1997 | 10c2650b | Iustin Pop | @type dest: str
|
1998 | 10c2650b | Iustin Pop | @param dest: directory containing the export
|
1999 | a8083063 | Iustin Pop |
|
2000 | 10c2650b | Iustin Pop | @rtype: L{objects.SerializableConfigParser}
|
2001 | 10c2650b | Iustin Pop | @return: a serializable config file containing the
|
2002 | 10c2650b | Iustin Pop | export info
|
2003 | a8083063 | Iustin Pop |
|
2004 | a8083063 | Iustin Pop | """
|
2005 | a8083063 | Iustin Pop | cff = os.path.join(dest, constants.EXPORT_CONF_FILE) |
2006 | a8083063 | Iustin Pop | |
2007 | a8083063 | Iustin Pop | config = objects.SerializableConfigParser() |
2008 | a8083063 | Iustin Pop | config.read(cff) |
2009 | a8083063 | Iustin Pop | |
2010 | a8083063 | Iustin Pop | if (not config.has_section(constants.INISECT_EXP) or |
2011 | a8083063 | Iustin Pop | not config.has_section(constants.INISECT_INS)):
|
2012 | 3eccac06 | Iustin Pop | _Fail("Export info file doesn't have the required fields")
|
2013 | a8083063 | Iustin Pop | |
2014 | c26a6bd2 | Iustin Pop | return config.Dumps()
|
2015 | a8083063 | Iustin Pop | |
2016 | a8083063 | Iustin Pop | |
2017 | 6c0af70e | Guido Trotter | def ImportOSIntoInstance(instance, src_node, src_images, cluster_name): |
2018 | a8083063 | Iustin Pop | """Import an os image into an instance.
|
2019 | a8083063 | Iustin Pop |
|
2020 | b1206984 | Iustin Pop | @type instance: L{objects.Instance}
|
2021 | 6c0af70e | Guido Trotter | @param instance: instance to import the disks into
|
2022 | 6c0af70e | Guido Trotter | @type src_node: string
|
2023 | 6c0af70e | Guido Trotter | @param src_node: source node for the disk images
|
2024 | 6c0af70e | Guido Trotter | @type src_images: list of string
|
2025 | 6c0af70e | Guido Trotter | @param src_images: absolute paths of the disk images
|
2026 | 6c0af70e | Guido Trotter | @rtype: list of boolean
|
2027 | 6c0af70e | Guido Trotter | @return: each boolean represent the success of importing the n-th disk
|
2028 | a8083063 | Iustin Pop |
|
2029 | a8083063 | Iustin Pop | """
|
2030 | a8083063 | Iustin Pop | inst_os = OSFromDisk(instance.os) |
2031 | d1a7d66f | Guido Trotter | import_env = OSEnvironment(instance, inst_os) |
2032 | a8083063 | Iustin Pop | import_script = inst_os.import_script |
2033 | a8083063 | Iustin Pop | |
2034 | a8083063 | Iustin Pop | logfile = "%s/import-%s-%s-%s.log" % (constants.LOG_OS_DIR, instance.os,
|
2035 | a8083063 | Iustin Pop | instance.name, int(time.time()))
|
2036 | a8083063 | Iustin Pop | if not os.path.exists(constants.LOG_OS_DIR): |
2037 | a8083063 | Iustin Pop | os.mkdir(constants.LOG_OS_DIR, 0750)
|
2038 | a8083063 | Iustin Pop | |
2039 | a8083063 | Iustin Pop | comprcmd = "gunzip"
|
2040 | d868edb4 | Iustin Pop | impcmd = utils.BuildShellCmd("(cd %s; %s >%s 2>&1)", inst_os.path,
|
2041 | d868edb4 | Iustin Pop | import_script, logfile) |
2042 | a8083063 | Iustin Pop | |
2043 | 6c0af70e | Guido Trotter | final_result = [] |
2044 | 6c0af70e | Guido Trotter | for idx, image in enumerate(src_images): |
2045 | 6c0af70e | Guido Trotter | if image:
|
2046 | 6c0af70e | Guido Trotter | destcmd = utils.BuildShellCmd('cat %s', image)
|
2047 | 6c0af70e | Guido Trotter | remotecmd = _GetSshRunner(cluster_name).BuildCmd(src_node, |
2048 | 6c0af70e | Guido Trotter | constants.GANETI_RUNAS, |
2049 | 6c0af70e | Guido Trotter | destcmd) |
2050 | 6c0af70e | Guido Trotter | command = '|'.join([utils.ShellQuoteArgs(remotecmd), comprcmd, impcmd])
|
2051 | 6c0af70e | Guido Trotter | import_env['IMPORT_DEVICE'] = import_env['DISK_%d_PATH' % idx] |
2052 | 74c47259 | Iustin Pop | import_env['IMPORT_INDEX'] = str(idx) |
2053 | 6c0af70e | Guido Trotter | result = utils.RunCmd(command, env=import_env) |
2054 | 6c0af70e | Guido Trotter | if result.failed:
|
2055 | 726d7d68 | Iustin Pop | logging.error("Disk import command '%s' returned error: %s"
|
2056 | 726d7d68 | Iustin Pop | " output: %s", command, result.fail_reason,
|
2057 | 726d7d68 | Iustin Pop | result.output) |
2058 | 944bf548 | Iustin Pop | final_result.append("error importing disk %d: %s, %s" %
|
2059 | 944bf548 | Iustin Pop | (idx, result.fail_reason, result.output[-100]))
|
2060 | a8083063 | Iustin Pop | |
2061 | 944bf548 | Iustin Pop | if final_result:
|
2062 | afdc3985 | Iustin Pop | _Fail("; ".join(final_result), log=False) |
2063 | a8083063 | Iustin Pop | |
2064 | a8083063 | Iustin Pop | |
2065 | a8083063 | Iustin Pop | def ListExports(): |
2066 | a8083063 | Iustin Pop | """Return a list of exports currently available on this machine.
|
2067 | 098c0958 | Michael Hanselmann |
|
2068 | 10c2650b | Iustin Pop | @rtype: list
|
2069 | 10c2650b | Iustin Pop | @return: list of the exports
|
2070 | 10c2650b | Iustin Pop |
|
2071 | a8083063 | Iustin Pop | """
|
2072 | a8083063 | Iustin Pop | if os.path.isdir(constants.EXPORT_DIR):
|
2073 | c26a6bd2 | Iustin Pop | return utils.ListVisibleFiles(constants.EXPORT_DIR)
|
2074 | a8083063 | Iustin Pop | else:
|
2075 | afdc3985 | Iustin Pop | _Fail("No exports directory")
|
2076 | a8083063 | Iustin Pop | |
2077 | a8083063 | Iustin Pop | |
2078 | a8083063 | Iustin Pop | def RemoveExport(export): |
2079 | a8083063 | Iustin Pop | """Remove an existing export from the node.
|
2080 | a8083063 | Iustin Pop |
|
2081 | 10c2650b | Iustin Pop | @type export: str
|
2082 | 10c2650b | Iustin Pop | @param export: the name of the export to remove
|
2083 | c26a6bd2 | Iustin Pop | @rtype: None
|
2084 | a8083063 | Iustin Pop |
|
2085 | 098c0958 | Michael Hanselmann | """
|
2086 | a8083063 | Iustin Pop | target = os.path.join(constants.EXPORT_DIR, export) |
2087 | a8083063 | Iustin Pop | |
2088 | 35fbcd11 | Iustin Pop | try:
|
2089 | 35fbcd11 | Iustin Pop | shutil.rmtree(target) |
2090 | 35fbcd11 | Iustin Pop | except EnvironmentError, err: |
2091 | 35fbcd11 | Iustin Pop | _Fail("Error while removing the export: %s", err, exc=True) |
2092 | a8083063 | Iustin Pop | |
2093 | a8083063 | Iustin Pop | |
2094 | 821d1bd1 | Iustin Pop | def BlockdevRename(devlist): |
2095 | f3e513ad | Iustin Pop | """Rename a list of block devices.
|
2096 | f3e513ad | Iustin Pop |
|
2097 | 10c2650b | Iustin Pop | @type devlist: list of tuples
|
2098 | 10c2650b | Iustin Pop | @param devlist: list of tuples of the form (disk,
|
2099 | 10c2650b | Iustin Pop | new_logical_id, new_physical_id); disk is an
|
2100 | 10c2650b | Iustin Pop | L{objects.Disk} object describing the current disk,
|
2101 | 10c2650b | Iustin Pop | and new logical_id/physical_id is the name we
|
2102 | 10c2650b | Iustin Pop | rename it to
|
2103 | 10c2650b | Iustin Pop | @rtype: boolean
|
2104 | 10c2650b | Iustin Pop | @return: True if all renames succeeded, False otherwise
|
2105 | f3e513ad | Iustin Pop |
|
2106 | f3e513ad | Iustin Pop | """
|
2107 | 6b5e3f70 | Iustin Pop | msgs = [] |
2108 | f3e513ad | Iustin Pop | result = True
|
2109 | f3e513ad | Iustin Pop | for disk, unique_id in devlist: |
2110 | f3e513ad | Iustin Pop | dev = _RecursiveFindBD(disk) |
2111 | f3e513ad | Iustin Pop | if dev is None: |
2112 | 6b5e3f70 | Iustin Pop | msgs.append("Can't find device %s in rename" % str(disk)) |
2113 | f3e513ad | Iustin Pop | result = False
|
2114 | f3e513ad | Iustin Pop | continue
|
2115 | f3e513ad | Iustin Pop | try:
|
2116 | 3f78eef2 | Iustin Pop | old_rpath = dev.dev_path |
2117 | f3e513ad | Iustin Pop | dev.Rename(unique_id) |
2118 | 3f78eef2 | Iustin Pop | new_rpath = dev.dev_path |
2119 | 3f78eef2 | Iustin Pop | if old_rpath != new_rpath:
|
2120 | 3f78eef2 | Iustin Pop | DevCacheManager.RemoveCache(old_rpath) |
2121 | 3f78eef2 | Iustin Pop | # FIXME: we should add the new cache information here, like:
|
2122 | 3f78eef2 | Iustin Pop | # DevCacheManager.UpdateCache(new_rpath, owner, ...)
|
2123 | 3f78eef2 | Iustin Pop | # but we don't have the owner here - maybe parse from existing
|
2124 | 3f78eef2 | Iustin Pop | # cache? for now, we only lose lvm data when we rename, which
|
2125 | 3f78eef2 | Iustin Pop | # is less critical than DRBD or MD
|
2126 | f3e513ad | Iustin Pop | except errors.BlockDeviceError, err:
|
2127 | 6b5e3f70 | Iustin Pop | msgs.append("Can't rename device '%s' to '%s': %s" %
|
2128 | 6b5e3f70 | Iustin Pop | (dev, unique_id, err)) |
2129 | 18682bca | Iustin Pop | logging.exception("Can't rename device '%s' to '%s'", dev, unique_id)
|
2130 | f3e513ad | Iustin Pop | result = False
|
2131 | afdc3985 | Iustin Pop | if not result: |
2132 | afdc3985 | Iustin Pop | _Fail("; ".join(msgs))
|
2133 | f3e513ad | Iustin Pop | |
2134 | f3e513ad | Iustin Pop | |
2135 | 778b75bb | Manuel Franceschini | def _TransformFileStorageDir(file_storage_dir): |
2136 | 778b75bb | Manuel Franceschini | """Checks whether given file_storage_dir is valid.
|
2137 | 778b75bb | Manuel Franceschini |
|
2138 | 778b75bb | Manuel Franceschini | Checks wheter the given file_storage_dir is within the cluster-wide
|
2139 | 778b75bb | Manuel Franceschini | default file_storage_dir stored in SimpleStore. Only paths under that
|
2140 | 778b75bb | Manuel Franceschini | directory are allowed.
|
2141 | 778b75bb | Manuel Franceschini |
|
2142 | b1206984 | Iustin Pop | @type file_storage_dir: str
|
2143 | b1206984 | Iustin Pop | @param file_storage_dir: the path to check
|
2144 | d61cbe76 | Iustin Pop |
|
2145 | b1206984 | Iustin Pop | @return: the normalized path if valid, None otherwise
|
2146 | 778b75bb | Manuel Franceschini |
|
2147 | 778b75bb | Manuel Franceschini | """
|
2148 | c657dcc9 | Michael Hanselmann | cfg = _GetConfig() |
2149 | 778b75bb | Manuel Franceschini | file_storage_dir = os.path.normpath(file_storage_dir) |
2150 | c657dcc9 | Michael Hanselmann | base_file_storage_dir = cfg.GetFileStorageDir() |
2151 | 778b75bb | Manuel Franceschini | if (not os.path.commonprefix([file_storage_dir, base_file_storage_dir]) == |
2152 | 778b75bb | Manuel Franceschini | base_file_storage_dir): |
2153 | b2b8bcce | Iustin Pop | _Fail("File storage directory '%s' is not under base file"
|
2154 | b2b8bcce | Iustin Pop | " storage directory '%s'", file_storage_dir, base_file_storage_dir)
|
2155 | 778b75bb | Manuel Franceschini | return file_storage_dir
|
2156 | 778b75bb | Manuel Franceschini | |
2157 | 778b75bb | Manuel Franceschini | |
2158 | 778b75bb | Manuel Franceschini | def CreateFileStorageDir(file_storage_dir): |
2159 | 778b75bb | Manuel Franceschini | """Create file storage directory.
|
2160 | 778b75bb | Manuel Franceschini |
|
2161 | b1206984 | Iustin Pop | @type file_storage_dir: str
|
2162 | b1206984 | Iustin Pop | @param file_storage_dir: directory to create
|
2163 | 778b75bb | Manuel Franceschini |
|
2164 | b1206984 | Iustin Pop | @rtype: tuple
|
2165 | b1206984 | Iustin Pop | @return: tuple with first element a boolean indicating wheter dir
|
2166 | b1206984 | Iustin Pop | creation was successful or not
|
2167 | 778b75bb | Manuel Franceschini |
|
2168 | 778b75bb | Manuel Franceschini | """
|
2169 | 778b75bb | Manuel Franceschini | file_storage_dir = _TransformFileStorageDir(file_storage_dir) |
2170 | b2b8bcce | Iustin Pop | if os.path.exists(file_storage_dir):
|
2171 | b2b8bcce | Iustin Pop | if not os.path.isdir(file_storage_dir): |
2172 | b2b8bcce | Iustin Pop | _Fail("Specified storage dir '%s' is not a directory",
|
2173 | b2b8bcce | Iustin Pop | file_storage_dir) |
2174 | 778b75bb | Manuel Franceschini | else:
|
2175 | b2b8bcce | Iustin Pop | try:
|
2176 | b2b8bcce | Iustin Pop | os.makedirs(file_storage_dir, 0750)
|
2177 | b2b8bcce | Iustin Pop | except OSError, err: |
2178 | b2b8bcce | Iustin Pop | _Fail("Cannot create file storage directory '%s': %s",
|
2179 | b2b8bcce | Iustin Pop | file_storage_dir, err, exc=True)
|
2180 | 778b75bb | Manuel Franceschini | |
2181 | 778b75bb | Manuel Franceschini | |
2182 | 778b75bb | Manuel Franceschini | def RemoveFileStorageDir(file_storage_dir): |
2183 | 778b75bb | Manuel Franceschini | """Remove file storage directory.
|
2184 | 778b75bb | Manuel Franceschini |
|
2185 | 778b75bb | Manuel Franceschini | Remove it only if it's empty. If not log an error and return.
|
2186 | 778b75bb | Manuel Franceschini |
|
2187 | 10c2650b | Iustin Pop | @type file_storage_dir: str
|
2188 | 10c2650b | Iustin Pop | @param file_storage_dir: the directory we should cleanup
|
2189 | 10c2650b | Iustin Pop | @rtype: tuple (success,)
|
2190 | 10c2650b | Iustin Pop | @return: tuple of one element, C{success}, denoting
|
2191 | 5bbd3f7f | Michael Hanselmann | whether the operation was successful
|
2192 | 778b75bb | Manuel Franceschini |
|
2193 | 778b75bb | Manuel Franceschini | """
|
2194 | 778b75bb | Manuel Franceschini | file_storage_dir = _TransformFileStorageDir(file_storage_dir) |
2195 | b2b8bcce | Iustin Pop | if os.path.exists(file_storage_dir):
|
2196 | b2b8bcce | Iustin Pop | if not os.path.isdir(file_storage_dir): |
2197 | b2b8bcce | Iustin Pop | _Fail("Specified Storage directory '%s' is not a directory",
|
2198 | b2b8bcce | Iustin Pop | file_storage_dir) |
2199 | afdc3985 | Iustin Pop | # deletes dir only if empty, otherwise we want to fail the rpc call
|
2200 | b2b8bcce | Iustin Pop | try:
|
2201 | b2b8bcce | Iustin Pop | os.rmdir(file_storage_dir) |
2202 | b2b8bcce | Iustin Pop | except OSError, err: |
2203 | b2b8bcce | Iustin Pop | _Fail("Cannot remove file storage directory '%s': %s",
|
2204 | b2b8bcce | Iustin Pop | file_storage_dir, err) |
2205 | b2b8bcce | Iustin Pop | |
2206 | 778b75bb | Manuel Franceschini | |
2207 | 778b75bb | Manuel Franceschini | def RenameFileStorageDir(old_file_storage_dir, new_file_storage_dir): |
2208 | 778b75bb | Manuel Franceschini | """Rename the file storage directory.
|
2209 | 778b75bb | Manuel Franceschini |
|
2210 | 10c2650b | Iustin Pop | @type old_file_storage_dir: str
|
2211 | 10c2650b | Iustin Pop | @param old_file_storage_dir: the current path
|
2212 | 10c2650b | Iustin Pop | @type new_file_storage_dir: str
|
2213 | 10c2650b | Iustin Pop | @param new_file_storage_dir: the name we should rename to
|
2214 | 10c2650b | Iustin Pop | @rtype: tuple (success,)
|
2215 | 10c2650b | Iustin Pop | @return: tuple of one element, C{success}, denoting
|
2216 | 10c2650b | Iustin Pop | whether the operation was successful
|
2217 | 778b75bb | Manuel Franceschini |
|
2218 | 778b75bb | Manuel Franceschini | """
|
2219 | 778b75bb | Manuel Franceschini | old_file_storage_dir = _TransformFileStorageDir(old_file_storage_dir) |
2220 | 778b75bb | Manuel Franceschini | new_file_storage_dir = _TransformFileStorageDir(new_file_storage_dir) |
2221 | b2b8bcce | Iustin Pop | if not os.path.exists(new_file_storage_dir): |
2222 | b2b8bcce | Iustin Pop | if os.path.isdir(old_file_storage_dir):
|
2223 | b2b8bcce | Iustin Pop | try:
|
2224 | b2b8bcce | Iustin Pop | os.rename(old_file_storage_dir, new_file_storage_dir) |
2225 | b2b8bcce | Iustin Pop | except OSError, err: |
2226 | b2b8bcce | Iustin Pop | _Fail("Cannot rename '%s' to '%s': %s",
|
2227 | b2b8bcce | Iustin Pop | old_file_storage_dir, new_file_storage_dir, err) |
2228 | 778b75bb | Manuel Franceschini | else:
|
2229 | b2b8bcce | Iustin Pop | _Fail("Specified storage dir '%s' is not a directory",
|
2230 | b2b8bcce | Iustin Pop | old_file_storage_dir) |
2231 | b2b8bcce | Iustin Pop | else:
|
2232 | b2b8bcce | Iustin Pop | if os.path.exists(old_file_storage_dir):
|
2233 | b2b8bcce | Iustin Pop | _Fail("Cannot rename '%s' to '%s': both locations exist",
|
2234 | b2b8bcce | Iustin Pop | old_file_storage_dir, new_file_storage_dir) |
2235 | 778b75bb | Manuel Franceschini | |
2236 | 778b75bb | Manuel Franceschini | |
2237 | c8457ce7 | Iustin Pop | def _EnsureJobQueueFile(file_name): |
2238 | dc31eae3 | Michael Hanselmann | """Checks whether the given filename is in the queue directory.
|
2239 | ca52cdeb | Michael Hanselmann |
|
2240 | 10c2650b | Iustin Pop | @type file_name: str
|
2241 | 10c2650b | Iustin Pop | @param file_name: the file name we should check
|
2242 | c8457ce7 | Iustin Pop | @rtype: None
|
2243 | c8457ce7 | Iustin Pop | @raises RPCFail: if the file is not valid
|
2244 | 10c2650b | Iustin Pop |
|
2245 | ca52cdeb | Michael Hanselmann | """
|
2246 | ca52cdeb | Michael Hanselmann | queue_dir = os.path.normpath(constants.QUEUE_DIR) |
2247 | dc31eae3 | Michael Hanselmann | result = (os.path.commonprefix([queue_dir, file_name]) == queue_dir) |
2248 | dc31eae3 | Michael Hanselmann | |
2249 | dc31eae3 | Michael Hanselmann | if not result: |
2250 | c8457ce7 | Iustin Pop | _Fail("Passed job queue file '%s' does not belong to"
|
2251 | c8457ce7 | Iustin Pop | " the queue directory '%s'", file_name, queue_dir)
|
2252 | dc31eae3 | Michael Hanselmann | |
2253 | dc31eae3 | Michael Hanselmann | |
2254 | dc31eae3 | Michael Hanselmann | def JobQueueUpdate(file_name, content): |
2255 | dc31eae3 | Michael Hanselmann | """Updates a file in the queue directory.
|
2256 | dc31eae3 | Michael Hanselmann |
|
2257 | 10c2650b | Iustin Pop | This is just a wrapper over L{utils.WriteFile}, with proper
|
2258 | 10c2650b | Iustin Pop | checking.
|
2259 | 10c2650b | Iustin Pop |
|
2260 | 10c2650b | Iustin Pop | @type file_name: str
|
2261 | 10c2650b | Iustin Pop | @param file_name: the job file name
|
2262 | 10c2650b | Iustin Pop | @type content: str
|
2263 | 10c2650b | Iustin Pop | @param content: the new job contents
|
2264 | 10c2650b | Iustin Pop | @rtype: boolean
|
2265 | 10c2650b | Iustin Pop | @return: the success of the operation
|
2266 | 10c2650b | Iustin Pop |
|
2267 | dc31eae3 | Michael Hanselmann | """
|
2268 | c8457ce7 | Iustin Pop | _EnsureJobQueueFile(file_name) |
2269 | ca52cdeb | Michael Hanselmann | |
2270 | ca52cdeb | Michael Hanselmann | # Write and replace the file atomically
|
2271 | 12bce260 | Michael Hanselmann | utils.WriteFile(file_name, data=_Decompress(content)) |
2272 | ca52cdeb | Michael Hanselmann | |
2273 | ca52cdeb | Michael Hanselmann | |
2274 | af5ebcb1 | Michael Hanselmann | def JobQueueRename(old, new): |
2275 | af5ebcb1 | Michael Hanselmann | """Renames a job queue file.
|
2276 | af5ebcb1 | Michael Hanselmann |
|
2277 | c41eea6e | Iustin Pop | This is just a wrapper over os.rename with proper checking.
|
2278 | 10c2650b | Iustin Pop |
|
2279 | 10c2650b | Iustin Pop | @type old: str
|
2280 | 10c2650b | Iustin Pop | @param old: the old (actual) file name
|
2281 | 10c2650b | Iustin Pop | @type new: str
|
2282 | 10c2650b | Iustin Pop | @param new: the desired file name
|
2283 | c8457ce7 | Iustin Pop | @rtype: tuple
|
2284 | c8457ce7 | Iustin Pop | @return: the success of the operation and payload
|
2285 | 10c2650b | Iustin Pop |
|
2286 | af5ebcb1 | Michael Hanselmann | """
|
2287 | c8457ce7 | Iustin Pop | _EnsureJobQueueFile(old) |
2288 | c8457ce7 | Iustin Pop | _EnsureJobQueueFile(new) |
2289 | af5ebcb1 | Michael Hanselmann | |
2290 | 58b22b6e | Michael Hanselmann | utils.RenameFile(old, new, mkdir=True)
|
2291 | af5ebcb1 | Michael Hanselmann | |
2292 | af5ebcb1 | Michael Hanselmann | |
2293 | 5d672980 | Iustin Pop | def JobQueueSetDrainFlag(drain_flag): |
2294 | 5d672980 | Iustin Pop | """Set the drain flag for the queue.
|
2295 | 5d672980 | Iustin Pop |
|
2296 | 5d672980 | Iustin Pop | This will set or unset the queue drain flag.
|
2297 | 5d672980 | Iustin Pop |
|
2298 | 10c2650b | Iustin Pop | @type drain_flag: boolean
|
2299 | 5d672980 | Iustin Pop | @param drain_flag: if True, will set the drain flag, otherwise reset it.
|
2300 | c8457ce7 | Iustin Pop | @rtype: truple
|
2301 | c8457ce7 | Iustin Pop | @return: always True, None
|
2302 | 10c2650b | Iustin Pop | @warning: the function always returns True
|
2303 | 5d672980 | Iustin Pop |
|
2304 | 5d672980 | Iustin Pop | """
|
2305 | 5d672980 | Iustin Pop | if drain_flag:
|
2306 | 5d672980 | Iustin Pop | utils.WriteFile(constants.JOB_QUEUE_DRAIN_FILE, data="", close=True) |
2307 | 5d672980 | Iustin Pop | else:
|
2308 | 5d672980 | Iustin Pop | utils.RemoveFile(constants.JOB_QUEUE_DRAIN_FILE) |
2309 | 5d672980 | Iustin Pop | |
2310 | 5d672980 | Iustin Pop | |
2311 | 821d1bd1 | Iustin Pop | def BlockdevClose(instance_name, disks): |
2312 | d61cbe76 | Iustin Pop | """Closes the given block devices.
|
2313 | d61cbe76 | Iustin Pop |
|
2314 | 10c2650b | Iustin Pop | This means they will be switched to secondary mode (in case of
|
2315 | 10c2650b | Iustin Pop | DRBD).
|
2316 | 10c2650b | Iustin Pop |
|
2317 | b2e7666a | Iustin Pop | @param instance_name: if the argument is not empty, the symlinks
|
2318 | b2e7666a | Iustin Pop | of this instance will be removed
|
2319 | 10c2650b | Iustin Pop | @type disks: list of L{objects.Disk}
|
2320 | 10c2650b | Iustin Pop | @param disks: the list of disks to be closed
|
2321 | 10c2650b | Iustin Pop | @rtype: tuple (success, message)
|
2322 | 10c2650b | Iustin Pop | @return: a tuple of success and message, where success
|
2323 | 10c2650b | Iustin Pop | indicates the succes of the operation, and message
|
2324 | 10c2650b | Iustin Pop | which will contain the error details in case we
|
2325 | 10c2650b | Iustin Pop | failed
|
2326 | d61cbe76 | Iustin Pop |
|
2327 | d61cbe76 | Iustin Pop | """
|
2328 | d61cbe76 | Iustin Pop | bdevs = [] |
2329 | d61cbe76 | Iustin Pop | for cf in disks: |
2330 | d61cbe76 | Iustin Pop | rd = _RecursiveFindBD(cf) |
2331 | d61cbe76 | Iustin Pop | if rd is None: |
2332 | 2cc6781a | Iustin Pop | _Fail("Can't find device %s", cf)
|
2333 | d61cbe76 | Iustin Pop | bdevs.append(rd) |
2334 | d61cbe76 | Iustin Pop | |
2335 | d61cbe76 | Iustin Pop | msg = [] |
2336 | d61cbe76 | Iustin Pop | for rd in bdevs: |
2337 | d61cbe76 | Iustin Pop | try:
|
2338 | d61cbe76 | Iustin Pop | rd.Close() |
2339 | d61cbe76 | Iustin Pop | except errors.BlockDeviceError, err:
|
2340 | d61cbe76 | Iustin Pop | msg.append(str(err))
|
2341 | d61cbe76 | Iustin Pop | if msg:
|
2342 | afdc3985 | Iustin Pop | _Fail("Can't make devices secondary: %s", ",".join(msg)) |
2343 | d61cbe76 | Iustin Pop | else:
|
2344 | b2e7666a | Iustin Pop | if instance_name:
|
2345 | 5282084b | Iustin Pop | _RemoveBlockDevLinks(instance_name, disks) |
2346 | d61cbe76 | Iustin Pop | |
2347 | d61cbe76 | Iustin Pop | |
2348 | 6217e295 | Iustin Pop | def ValidateHVParams(hvname, hvparams): |
2349 | 6217e295 | Iustin Pop | """Validates the given hypervisor parameters.
|
2350 | 6217e295 | Iustin Pop |
|
2351 | 6217e295 | Iustin Pop | @type hvname: string
|
2352 | 6217e295 | Iustin Pop | @param hvname: the hypervisor name
|
2353 | 6217e295 | Iustin Pop | @type hvparams: dict
|
2354 | 6217e295 | Iustin Pop | @param hvparams: the hypervisor parameters to be validated
|
2355 | c26a6bd2 | Iustin Pop | @rtype: None
|
2356 | 6217e295 | Iustin Pop |
|
2357 | 6217e295 | Iustin Pop | """
|
2358 | 6217e295 | Iustin Pop | try:
|
2359 | 6217e295 | Iustin Pop | hv_type = hypervisor.GetHypervisor(hvname) |
2360 | 6217e295 | Iustin Pop | hv_type.ValidateParameters(hvparams) |
2361 | 6217e295 | Iustin Pop | except errors.HypervisorError, err:
|
2362 | afdc3985 | Iustin Pop | _Fail(str(err), log=False) |
2363 | 6217e295 | Iustin Pop | |
2364 | 6217e295 | Iustin Pop | |
2365 | 56aa9fd5 | Iustin Pop | def DemoteFromMC(): |
2366 | 56aa9fd5 | Iustin Pop | """Demotes the current node from master candidate role.
|
2367 | 56aa9fd5 | Iustin Pop |
|
2368 | 56aa9fd5 | Iustin Pop | """
|
2369 | 56aa9fd5 | Iustin Pop | # try to ensure we're not the master by mistake
|
2370 | 56aa9fd5 | Iustin Pop | master, myself = ssconf.GetMasterAndMyself() |
2371 | 56aa9fd5 | Iustin Pop | if master == myself:
|
2372 | afdc3985 | Iustin Pop | _Fail("ssconf status shows I'm the master node, will not demote")
|
2373 | 83052f9e | Guido Trotter | pid_file = utils.DaemonPidFileName(constants.MASTERD) |
2374 | 56aa9fd5 | Iustin Pop | if utils.IsProcessAlive(utils.ReadPidFile(pid_file)):
|
2375 | afdc3985 | Iustin Pop | _Fail("The master daemon is running, will not demote")
|
2376 | 56aa9fd5 | Iustin Pop | try:
|
2377 | 9a5cb537 | Iustin Pop | if os.path.isfile(constants.CLUSTER_CONF_FILE):
|
2378 | 9a5cb537 | Iustin Pop | utils.CreateBackup(constants.CLUSTER_CONF_FILE) |
2379 | 56aa9fd5 | Iustin Pop | except EnvironmentError, err: |
2380 | 56aa9fd5 | Iustin Pop | if err.errno != errno.ENOENT:
|
2381 | afdc3985 | Iustin Pop | _Fail("Error while backing up cluster file: %s", err, exc=True) |
2382 | 56aa9fd5 | Iustin Pop | utils.RemoveFile(constants.CLUSTER_CONF_FILE) |
2383 | 56aa9fd5 | Iustin Pop | |
2384 | 56aa9fd5 | Iustin Pop | |
2385 | 6b93ec9d | Iustin Pop | def _FindDisks(nodes_ip, disks): |
2386 | 6b93ec9d | Iustin Pop | """Sets the physical ID on disks and returns the block devices.
|
2387 | 6b93ec9d | Iustin Pop |
|
2388 | 6b93ec9d | Iustin Pop | """
|
2389 | 6b93ec9d | Iustin Pop | # set the correct physical ID
|
2390 | 6b93ec9d | Iustin Pop | my_name = utils.HostInfo().name |
2391 | 6b93ec9d | Iustin Pop | for cf in disks: |
2392 | 6b93ec9d | Iustin Pop | cf.SetPhysicalID(my_name, nodes_ip) |
2393 | 6b93ec9d | Iustin Pop | |
2394 | 6b93ec9d | Iustin Pop | bdevs = [] |
2395 | 6b93ec9d | Iustin Pop | |
2396 | 6b93ec9d | Iustin Pop | for cf in disks: |
2397 | 6b93ec9d | Iustin Pop | rd = _RecursiveFindBD(cf) |
2398 | 6b93ec9d | Iustin Pop | if rd is None: |
2399 | 5a533f8a | Iustin Pop | _Fail("Can't find device %s", cf)
|
2400 | 6b93ec9d | Iustin Pop | bdevs.append(rd) |
2401 | 5a533f8a | Iustin Pop | return bdevs
|
2402 | 6b93ec9d | Iustin Pop | |
2403 | 6b93ec9d | Iustin Pop | |
2404 | 6b93ec9d | Iustin Pop | def DrbdDisconnectNet(nodes_ip, disks): |
2405 | 6b93ec9d | Iustin Pop | """Disconnects the network on a list of drbd devices.
|
2406 | 6b93ec9d | Iustin Pop |
|
2407 | 6b93ec9d | Iustin Pop | """
|
2408 | 5a533f8a | Iustin Pop | bdevs = _FindDisks(nodes_ip, disks) |
2409 | 6b93ec9d | Iustin Pop | |
2410 | 6b93ec9d | Iustin Pop | # disconnect disks
|
2411 | 6b93ec9d | Iustin Pop | for rd in bdevs: |
2412 | 6b93ec9d | Iustin Pop | try:
|
2413 | 6b93ec9d | Iustin Pop | rd.DisconnectNet() |
2414 | 6b93ec9d | Iustin Pop | except errors.BlockDeviceError, err:
|
2415 | 2cc6781a | Iustin Pop | _Fail("Can't change network configuration to standalone mode: %s",
|
2416 | 2cc6781a | Iustin Pop | err, exc=True)
|
2417 | 6b93ec9d | Iustin Pop | |
2418 | 6b93ec9d | Iustin Pop | |
2419 | 6b93ec9d | Iustin Pop | def DrbdAttachNet(nodes_ip, disks, instance_name, multimaster): |
2420 | 6b93ec9d | Iustin Pop | """Attaches the network on a list of drbd devices.
|
2421 | 6b93ec9d | Iustin Pop |
|
2422 | 6b93ec9d | Iustin Pop | """
|
2423 | 5a533f8a | Iustin Pop | bdevs = _FindDisks(nodes_ip, disks) |
2424 | 6b93ec9d | Iustin Pop | |
2425 | 6b93ec9d | Iustin Pop | if multimaster:
|
2426 | 53c776b5 | Iustin Pop | for idx, rd in enumerate(bdevs): |
2427 | 6b93ec9d | Iustin Pop | try:
|
2428 | 53c776b5 | Iustin Pop | _SymlinkBlockDev(instance_name, rd.dev_path, idx) |
2429 | 6b93ec9d | Iustin Pop | except EnvironmentError, err: |
2430 | 2cc6781a | Iustin Pop | _Fail("Can't create symlink: %s", err)
|
2431 | 6b93ec9d | Iustin Pop | # reconnect disks, switch to new master configuration and if
|
2432 | 6b93ec9d | Iustin Pop | # needed primary mode
|
2433 | 6b93ec9d | Iustin Pop | for rd in bdevs: |
2434 | 6b93ec9d | Iustin Pop | try:
|
2435 | 6b93ec9d | Iustin Pop | rd.AttachNet(multimaster) |
2436 | 6b93ec9d | Iustin Pop | except errors.BlockDeviceError, err:
|
2437 | 2cc6781a | Iustin Pop | _Fail("Can't change network configuration: %s", err)
|
2438 | 6b93ec9d | Iustin Pop | # wait until the disks are connected; we need to retry the re-attach
|
2439 | 6b93ec9d | Iustin Pop | # if the device becomes standalone, as this might happen if the one
|
2440 | 6b93ec9d | Iustin Pop | # node disconnects and reconnects in a different mode before the
|
2441 | 6b93ec9d | Iustin Pop | # other node reconnects; in this case, one or both of the nodes will
|
2442 | 6b93ec9d | Iustin Pop | # decide it has wrong configuration and switch to standalone
|
2443 | 6b93ec9d | Iustin Pop | RECONNECT_TIMEOUT = 2 * 60 |
2444 | 6b93ec9d | Iustin Pop | sleep_time = 0.100 # start with 100 miliseconds |
2445 | 6b93ec9d | Iustin Pop | timeout_limit = time.time() + RECONNECT_TIMEOUT |
2446 | 6b93ec9d | Iustin Pop | while time.time() < timeout_limit:
|
2447 | 6b93ec9d | Iustin Pop | all_connected = True
|
2448 | 6b93ec9d | Iustin Pop | for rd in bdevs: |
2449 | 6b93ec9d | Iustin Pop | stats = rd.GetProcStatus() |
2450 | 6b93ec9d | Iustin Pop | if not (stats.is_connected or stats.is_in_resync): |
2451 | 6b93ec9d | Iustin Pop | all_connected = False
|
2452 | 6b93ec9d | Iustin Pop | if stats.is_standalone:
|
2453 | 6b93ec9d | Iustin Pop | # peer had different config info and this node became
|
2454 | 6b93ec9d | Iustin Pop | # standalone, even though this should not happen with the
|
2455 | 6b93ec9d | Iustin Pop | # new staged way of changing disk configs
|
2456 | 6b93ec9d | Iustin Pop | try:
|
2457 | c738375b | Iustin Pop | rd.AttachNet(multimaster) |
2458 | 6b93ec9d | Iustin Pop | except errors.BlockDeviceError, err:
|
2459 | 2cc6781a | Iustin Pop | _Fail("Can't change network configuration: %s", err)
|
2460 | 6b93ec9d | Iustin Pop | if all_connected:
|
2461 | 6b93ec9d | Iustin Pop | break
|
2462 | 6b93ec9d | Iustin Pop | time.sleep(sleep_time) |
2463 | 6b93ec9d | Iustin Pop | sleep_time = min(5, sleep_time * 1.5) |
2464 | 6b93ec9d | Iustin Pop | if not all_connected: |
2465 | afdc3985 | Iustin Pop | _Fail("Timeout in disk reconnecting")
|
2466 | 6b93ec9d | Iustin Pop | if multimaster:
|
2467 | 6b93ec9d | Iustin Pop | # change to primary mode
|
2468 | 6b93ec9d | Iustin Pop | for rd in bdevs: |
2469 | d3da87b8 | Iustin Pop | try:
|
2470 | d3da87b8 | Iustin Pop | rd.Open() |
2471 | d3da87b8 | Iustin Pop | except errors.BlockDeviceError, err:
|
2472 | 2cc6781a | Iustin Pop | _Fail("Can't change to primary mode: %s", err)
|
2473 | 6b93ec9d | Iustin Pop | |
2474 | 6b93ec9d | Iustin Pop | |
2475 | 6b93ec9d | Iustin Pop | def DrbdWaitSync(nodes_ip, disks): |
2476 | 6b93ec9d | Iustin Pop | """Wait until DRBDs have synchronized.
|
2477 | 6b93ec9d | Iustin Pop |
|
2478 | 6b93ec9d | Iustin Pop | """
|
2479 | 5a533f8a | Iustin Pop | bdevs = _FindDisks(nodes_ip, disks) |
2480 | 6b93ec9d | Iustin Pop | |
2481 | 6b93ec9d | Iustin Pop | min_resync = 100
|
2482 | 6b93ec9d | Iustin Pop | alldone = True
|
2483 | 6b93ec9d | Iustin Pop | for rd in bdevs: |
2484 | 6b93ec9d | Iustin Pop | stats = rd.GetProcStatus() |
2485 | 6b93ec9d | Iustin Pop | if not (stats.is_connected or stats.is_in_resync): |
2486 | afdc3985 | Iustin Pop | _Fail("DRBD device %s is not in sync: stats=%s", rd, stats)
|
2487 | 6b93ec9d | Iustin Pop | alldone = alldone and (not stats.is_in_resync) |
2488 | 6b93ec9d | Iustin Pop | if stats.sync_percent is not None: |
2489 | 6b93ec9d | Iustin Pop | min_resync = min(min_resync, stats.sync_percent)
|
2490 | afdc3985 | Iustin Pop | |
2491 | c26a6bd2 | Iustin Pop | return (alldone, min_resync)
|
2492 | 6b93ec9d | Iustin Pop | |
2493 | 6b93ec9d | Iustin Pop | |
2494 | f5118ade | Iustin Pop | def PowercycleNode(hypervisor_type): |
2495 | f5118ade | Iustin Pop | """Hard-powercycle the node.
|
2496 | f5118ade | Iustin Pop |
|
2497 | f5118ade | Iustin Pop | Because we need to return first, and schedule the powercycle in the
|
2498 | f5118ade | Iustin Pop | background, we won't be able to report failures nicely.
|
2499 | f5118ade | Iustin Pop |
|
2500 | f5118ade | Iustin Pop | """
|
2501 | f5118ade | Iustin Pop | hyper = hypervisor.GetHypervisor(hypervisor_type) |
2502 | f5118ade | Iustin Pop | try:
|
2503 | f5118ade | Iustin Pop | pid = os.fork() |
2504 | 29921401 | Iustin Pop | except OSError: |
2505 | f5118ade | Iustin Pop | # if we can't fork, we'll pretend that we're in the child process
|
2506 | f5118ade | Iustin Pop | pid = 0
|
2507 | f5118ade | Iustin Pop | if pid > 0: |
2508 | c26a6bd2 | Iustin Pop | return "Reboot scheduled in 5 seconds" |
2509 | f5118ade | Iustin Pop | time.sleep(5)
|
2510 | f5118ade | Iustin Pop | hyper.PowercycleNode() |
2511 | f5118ade | Iustin Pop | |
2512 | f5118ade | Iustin Pop | |
2513 | a8083063 | Iustin Pop | class HooksRunner(object): |
2514 | a8083063 | Iustin Pop | """Hook runner.
|
2515 | a8083063 | Iustin Pop |
|
2516 | 10c2650b | Iustin Pop | This class is instantiated on the node side (ganeti-noded) and not
|
2517 | 10c2650b | Iustin Pop | on the master side.
|
2518 | a8083063 | Iustin Pop |
|
2519 | a8083063 | Iustin Pop | """
|
2520 | a8083063 | Iustin Pop | RE_MASK = re.compile("^[a-zA-Z0-9_-]+$")
|
2521 | a8083063 | Iustin Pop | |
2522 | a8083063 | Iustin Pop | def __init__(self, hooks_base_dir=None): |
2523 | a8083063 | Iustin Pop | """Constructor for hooks runner.
|
2524 | a8083063 | Iustin Pop |
|
2525 | 10c2650b | Iustin Pop | @type hooks_base_dir: str or None
|
2526 | 10c2650b | Iustin Pop | @param hooks_base_dir: if not None, this overrides the
|
2527 | 10c2650b | Iustin Pop | L{constants.HOOKS_BASE_DIR} (useful for unittests)
|
2528 | a8083063 | Iustin Pop |
|
2529 | a8083063 | Iustin Pop | """
|
2530 | a8083063 | Iustin Pop | if hooks_base_dir is None: |
2531 | a8083063 | Iustin Pop | hooks_base_dir = constants.HOOKS_BASE_DIR |
2532 | a8083063 | Iustin Pop | self._BASE_DIR = hooks_base_dir
|
2533 | a8083063 | Iustin Pop | |
2534 | a8083063 | Iustin Pop | @staticmethod
|
2535 | a8083063 | Iustin Pop | def ExecHook(script, env): |
2536 | a8083063 | Iustin Pop | """Exec one hook script.
|
2537 | a8083063 | Iustin Pop |
|
2538 | 10c2650b | Iustin Pop | @type script: str
|
2539 | 10c2650b | Iustin Pop | @param script: the full path to the script
|
2540 | 10c2650b | Iustin Pop | @type env: dict
|
2541 | 10c2650b | Iustin Pop | @param env: the environment with which to exec the script
|
2542 | 10c2650b | Iustin Pop | @rtype: tuple (success, message)
|
2543 | 10c2650b | Iustin Pop | @return: a tuple of success and message, where success
|
2544 | 10c2650b | Iustin Pop | indicates the succes of the operation, and message
|
2545 | 10c2650b | Iustin Pop | which will contain the error details in case we
|
2546 | 10c2650b | Iustin Pop | failed
|
2547 | a8083063 | Iustin Pop |
|
2548 | a8083063 | Iustin Pop | """
|
2549 | a8083063 | Iustin Pop | # exec the process using subprocess and log the output
|
2550 | a8083063 | Iustin Pop | fdstdin = None
|
2551 | a8083063 | Iustin Pop | try:
|
2552 | a8083063 | Iustin Pop | fdstdin = open("/dev/null", "r") |
2553 | a8083063 | Iustin Pop | child = subprocess.Popen([script], stdin=fdstdin, stdout=subprocess.PIPE, |
2554 | a8083063 | Iustin Pop | stderr=subprocess.STDOUT, close_fds=True,
|
2555 | 147af04d | Iustin Pop | shell=False, cwd="/", env=env) |
2556 | a8083063 | Iustin Pop | output = ""
|
2557 | a8083063 | Iustin Pop | try:
|
2558 | a8083063 | Iustin Pop | output = child.stdout.read(4096)
|
2559 | a8083063 | Iustin Pop | child.stdout.close() |
2560 | a8083063 | Iustin Pop | except EnvironmentError, err: |
2561 | a8083063 | Iustin Pop | output += "Hook script error: %s" % str(err) |
2562 | a8083063 | Iustin Pop | |
2563 | a8083063 | Iustin Pop | while True: |
2564 | a8083063 | Iustin Pop | try:
|
2565 | a8083063 | Iustin Pop | result = child.wait() |
2566 | a8083063 | Iustin Pop | break
|
2567 | a8083063 | Iustin Pop | except EnvironmentError, err: |
2568 | a8083063 | Iustin Pop | if err.errno == errno.EINTR:
|
2569 | a8083063 | Iustin Pop | continue
|
2570 | a8083063 | Iustin Pop | raise
|
2571 | a8083063 | Iustin Pop | finally:
|
2572 | a8083063 | Iustin Pop | # try not to leak fds
|
2573 | a8083063 | Iustin Pop | for fd in (fdstdin, ): |
2574 | a8083063 | Iustin Pop | if fd is not None: |
2575 | a8083063 | Iustin Pop | try:
|
2576 | a8083063 | Iustin Pop | fd.close() |
2577 | a8083063 | Iustin Pop | except EnvironmentError, err: |
2578 | a8083063 | Iustin Pop | # just log the error
|
2579 | 18682bca | Iustin Pop | #logging.exception("Error while closing fd %s", fd)
|
2580 | a8083063 | Iustin Pop | pass
|
2581 | a8083063 | Iustin Pop | |
2582 | 26f15862 | Iustin Pop | return result == 0, utils.SafeEncode(output.strip()) |
2583 | a8083063 | Iustin Pop | |
2584 | a8083063 | Iustin Pop | def RunHooks(self, hpath, phase, env): |
2585 | a8083063 | Iustin Pop | """Run the scripts in the hooks directory.
|
2586 | a8083063 | Iustin Pop |
|
2587 | 10c2650b | Iustin Pop | @type hpath: str
|
2588 | 10c2650b | Iustin Pop | @param hpath: the path to the hooks directory which
|
2589 | 10c2650b | Iustin Pop | holds the scripts
|
2590 | 10c2650b | Iustin Pop | @type phase: str
|
2591 | 10c2650b | Iustin Pop | @param phase: either L{constants.HOOKS_PHASE_PRE} or
|
2592 | 10c2650b | Iustin Pop | L{constants.HOOKS_PHASE_POST}
|
2593 | 10c2650b | Iustin Pop | @type env: dict
|
2594 | 10c2650b | Iustin Pop | @param env: dictionary with the environment for the hook
|
2595 | 10c2650b | Iustin Pop | @rtype: list
|
2596 | 10c2650b | Iustin Pop | @return: list of 3-element tuples:
|
2597 | 10c2650b | Iustin Pop | - script path
|
2598 | 10c2650b | Iustin Pop | - script result, either L{constants.HKR_SUCCESS} or
|
2599 | 10c2650b | Iustin Pop | L{constants.HKR_FAIL}
|
2600 | 10c2650b | Iustin Pop | - output of the script
|
2601 | 10c2650b | Iustin Pop |
|
2602 | 10c2650b | Iustin Pop | @raise errors.ProgrammerError: for invalid input
|
2603 | 10c2650b | Iustin Pop | parameters
|
2604 | a8083063 | Iustin Pop |
|
2605 | a8083063 | Iustin Pop | """
|
2606 | a8083063 | Iustin Pop | if phase == constants.HOOKS_PHASE_PRE:
|
2607 | a8083063 | Iustin Pop | suffix = "pre"
|
2608 | a8083063 | Iustin Pop | elif phase == constants.HOOKS_PHASE_POST:
|
2609 | a8083063 | Iustin Pop | suffix = "post"
|
2610 | a8083063 | Iustin Pop | else:
|
2611 | 3fb4f740 | Iustin Pop | _Fail("Unknown hooks phase '%s'", phase)
|
2612 | 3fb4f740 | Iustin Pop | |
2613 | a8083063 | Iustin Pop | rr = [] |
2614 | a8083063 | Iustin Pop | |
2615 | a8083063 | Iustin Pop | subdir = "%s-%s.d" % (hpath, suffix)
|
2616 | a8083063 | Iustin Pop | dir_name = "%s/%s" % (self._BASE_DIR, subdir) |
2617 | a8083063 | Iustin Pop | try:
|
2618 | eedbda4b | Michael Hanselmann | dir_contents = utils.ListVisibleFiles(dir_name) |
2619 | 29921401 | Iustin Pop | except OSError: |
2620 | 10c2650b | Iustin Pop | # FIXME: must log output in case of failures
|
2621 | c26a6bd2 | Iustin Pop | return rr
|
2622 | a8083063 | Iustin Pop | |
2623 | a8083063 | Iustin Pop | # we use the standard python sort order,
|
2624 | a8083063 | Iustin Pop | # so 00name is the recommended naming scheme
|
2625 | a8083063 | Iustin Pop | dir_contents.sort() |
2626 | a8083063 | Iustin Pop | for relname in dir_contents: |
2627 | a8083063 | Iustin Pop | fname = os.path.join(dir_name, relname) |
2628 | a8083063 | Iustin Pop | if not (os.path.isfile(fname) and os.access(fname, os.X_OK) and |
2629 | a8083063 | Iustin Pop | self.RE_MASK.match(relname) is not None): |
2630 | a8083063 | Iustin Pop | rrval = constants.HKR_SKIP |
2631 | a8083063 | Iustin Pop | output = ""
|
2632 | a8083063 | Iustin Pop | else:
|
2633 | a8083063 | Iustin Pop | result, output = self.ExecHook(fname, env)
|
2634 | a8083063 | Iustin Pop | if not result: |
2635 | a8083063 | Iustin Pop | rrval = constants.HKR_FAIL |
2636 | a8083063 | Iustin Pop | else:
|
2637 | a8083063 | Iustin Pop | rrval = constants.HKR_SUCCESS |
2638 | a8083063 | Iustin Pop | rr.append(("%s/%s" % (subdir, relname), rrval, output))
|
2639 | a8083063 | Iustin Pop | |
2640 | c26a6bd2 | Iustin Pop | return rr
|
2641 | 3f78eef2 | Iustin Pop | |
2642 | 3f78eef2 | Iustin Pop | |
2643 | 8d528b7c | Iustin Pop | class IAllocatorRunner(object): |
2644 | 8d528b7c | Iustin Pop | """IAllocator runner.
|
2645 | 8d528b7c | Iustin Pop |
|
2646 | 8d528b7c | Iustin Pop | This class is instantiated on the node side (ganeti-noded) and not on
|
2647 | 8d528b7c | Iustin Pop | the master side.
|
2648 | 8d528b7c | Iustin Pop |
|
2649 | 8d528b7c | Iustin Pop | """
|
2650 | 8d528b7c | Iustin Pop | def Run(self, name, idata): |
2651 | 8d528b7c | Iustin Pop | """Run an iallocator script.
|
2652 | 8d528b7c | Iustin Pop |
|
2653 | 10c2650b | Iustin Pop | @type name: str
|
2654 | 10c2650b | Iustin Pop | @param name: the iallocator script name
|
2655 | 10c2650b | Iustin Pop | @type idata: str
|
2656 | 10c2650b | Iustin Pop | @param idata: the allocator input data
|
2657 | 10c2650b | Iustin Pop |
|
2658 | 10c2650b | Iustin Pop | @rtype: tuple
|
2659 | 87f5c298 | Iustin Pop | @return: two element tuple of:
|
2660 | 87f5c298 | Iustin Pop | - status
|
2661 | 87f5c298 | Iustin Pop | - either error message or stdout of allocator (for success)
|
2662 | 8d528b7c | Iustin Pop |
|
2663 | 8d528b7c | Iustin Pop | """
|
2664 | 8d528b7c | Iustin Pop | alloc_script = utils.FindFile(name, constants.IALLOCATOR_SEARCH_PATH, |
2665 | 8d528b7c | Iustin Pop | os.path.isfile) |
2666 | 8d528b7c | Iustin Pop | if alloc_script is None: |
2667 | 87f5c298 | Iustin Pop | _Fail("iallocator module '%s' not found in the search path", name)
|
2668 | 8d528b7c | Iustin Pop | |
2669 | 8d528b7c | Iustin Pop | fd, fin_name = tempfile.mkstemp(prefix="ganeti-iallocator.")
|
2670 | 8d528b7c | Iustin Pop | try:
|
2671 | 8d528b7c | Iustin Pop | os.write(fd, idata) |
2672 | 8d528b7c | Iustin Pop | os.close(fd) |
2673 | 8d528b7c | Iustin Pop | result = utils.RunCmd([alloc_script, fin_name]) |
2674 | 8d528b7c | Iustin Pop | if result.failed:
|
2675 | 87f5c298 | Iustin Pop | _Fail("iallocator module '%s' failed: %s, output '%s'",
|
2676 | 87f5c298 | Iustin Pop | name, result.fail_reason, result.output) |
2677 | 8d528b7c | Iustin Pop | finally:
|
2678 | 8d528b7c | Iustin Pop | os.unlink(fin_name) |
2679 | 8d528b7c | Iustin Pop | |
2680 | c26a6bd2 | Iustin Pop | return result.stdout
|
2681 | 8d528b7c | Iustin Pop | |
2682 | 8d528b7c | Iustin Pop | |
2683 | 3f78eef2 | Iustin Pop | class DevCacheManager(object): |
2684 | c99a3cc0 | Manuel Franceschini | """Simple class for managing a cache of block device information.
|
2685 | 3f78eef2 | Iustin Pop |
|
2686 | 3f78eef2 | Iustin Pop | """
|
2687 | 3f78eef2 | Iustin Pop | _DEV_PREFIX = "/dev/"
|
2688 | 3f78eef2 | Iustin Pop | _ROOT_DIR = constants.BDEV_CACHE_DIR |
2689 | 3f78eef2 | Iustin Pop | |
2690 | 3f78eef2 | Iustin Pop | @classmethod
|
2691 | 3f78eef2 | Iustin Pop | def _ConvertPath(cls, dev_path): |
2692 | 3f78eef2 | Iustin Pop | """Converts a /dev/name path to the cache file name.
|
2693 | 3f78eef2 | Iustin Pop |
|
2694 | 3f78eef2 | Iustin Pop | This replaces slashes with underscores and strips the /dev
|
2695 | 10c2650b | Iustin Pop | prefix. It then returns the full path to the cache file.
|
2696 | 10c2650b | Iustin Pop |
|
2697 | 10c2650b | Iustin Pop | @type dev_path: str
|
2698 | 10c2650b | Iustin Pop | @param dev_path: the C{/dev/} path name
|
2699 | 10c2650b | Iustin Pop | @rtype: str
|
2700 | 10c2650b | Iustin Pop | @return: the converted path name
|
2701 | 3f78eef2 | Iustin Pop |
|
2702 | 3f78eef2 | Iustin Pop | """
|
2703 | 3f78eef2 | Iustin Pop | if dev_path.startswith(cls._DEV_PREFIX):
|
2704 | 3f78eef2 | Iustin Pop | dev_path = dev_path[len(cls._DEV_PREFIX):]
|
2705 | 3f78eef2 | Iustin Pop | dev_path = dev_path.replace("/", "_") |
2706 | 3f78eef2 | Iustin Pop | fpath = "%s/bdev_%s" % (cls._ROOT_DIR, dev_path)
|
2707 | 3f78eef2 | Iustin Pop | return fpath
|
2708 | 3f78eef2 | Iustin Pop | |
2709 | 3f78eef2 | Iustin Pop | @classmethod
|
2710 | 3f78eef2 | Iustin Pop | def UpdateCache(cls, dev_path, owner, on_primary, iv_name): |
2711 | 3f78eef2 | Iustin Pop | """Updates the cache information for a given device.
|
2712 | 3f78eef2 | Iustin Pop |
|
2713 | 10c2650b | Iustin Pop | @type dev_path: str
|
2714 | 10c2650b | Iustin Pop | @param dev_path: the pathname of the device
|
2715 | 10c2650b | Iustin Pop | @type owner: str
|
2716 | 10c2650b | Iustin Pop | @param owner: the owner (instance name) of the device
|
2717 | 10c2650b | Iustin Pop | @type on_primary: bool
|
2718 | 10c2650b | Iustin Pop | @param on_primary: whether this is the primary
|
2719 | 10c2650b | Iustin Pop | node nor not
|
2720 | 10c2650b | Iustin Pop | @type iv_name: str
|
2721 | 10c2650b | Iustin Pop | @param iv_name: the instance-visible name of the
|
2722 | c41eea6e | Iustin Pop | device, as in objects.Disk.iv_name
|
2723 | 10c2650b | Iustin Pop |
|
2724 | 10c2650b | Iustin Pop | @rtype: None
|
2725 | 10c2650b | Iustin Pop |
|
2726 | 3f78eef2 | Iustin Pop | """
|
2727 | cf5a8306 | Iustin Pop | if dev_path is None: |
2728 | 18682bca | Iustin Pop | logging.error("DevCacheManager.UpdateCache got a None dev_path")
|
2729 | cf5a8306 | Iustin Pop | return
|
2730 | 3f78eef2 | Iustin Pop | fpath = cls._ConvertPath(dev_path) |
2731 | 3f78eef2 | Iustin Pop | if on_primary:
|
2732 | 3f78eef2 | Iustin Pop | state = "primary"
|
2733 | 3f78eef2 | Iustin Pop | else:
|
2734 | 3f78eef2 | Iustin Pop | state = "secondary"
|
2735 | 3f78eef2 | Iustin Pop | if iv_name is None: |
2736 | 3f78eef2 | Iustin Pop | iv_name = "not_visible"
|
2737 | 3f78eef2 | Iustin Pop | fdata = "%s %s %s\n" % (str(owner), state, iv_name) |
2738 | 3f78eef2 | Iustin Pop | try:
|
2739 | 3f78eef2 | Iustin Pop | utils.WriteFile(fpath, data=fdata) |
2740 | 3f78eef2 | Iustin Pop | except EnvironmentError, err: |
2741 | 29921401 | Iustin Pop | logging.exception("Can't update bdev cache for %s: %s", dev_path, err)
|
2742 | 3f78eef2 | Iustin Pop | |
2743 | 3f78eef2 | Iustin Pop | @classmethod
|
2744 | 3f78eef2 | Iustin Pop | def RemoveCache(cls, dev_path): |
2745 | 3f78eef2 | Iustin Pop | """Remove data for a dev_path.
|
2746 | 3f78eef2 | Iustin Pop |
|
2747 | 10c2650b | Iustin Pop | This is just a wrapper over L{utils.RemoveFile} with a converted
|
2748 | 10c2650b | Iustin Pop | path name and logging.
|
2749 | 10c2650b | Iustin Pop |
|
2750 | 10c2650b | Iustin Pop | @type dev_path: str
|
2751 | 10c2650b | Iustin Pop | @param dev_path: the pathname of the device
|
2752 | 10c2650b | Iustin Pop |
|
2753 | 10c2650b | Iustin Pop | @rtype: None
|
2754 | 10c2650b | Iustin Pop |
|
2755 | 3f78eef2 | Iustin Pop | """
|
2756 | cf5a8306 | Iustin Pop | if dev_path is None: |
2757 | 18682bca | Iustin Pop | logging.error("DevCacheManager.RemoveCache got a None dev_path")
|
2758 | cf5a8306 | Iustin Pop | return
|
2759 | 3f78eef2 | Iustin Pop | fpath = cls._ConvertPath(dev_path) |
2760 | 3f78eef2 | Iustin Pop | try:
|
2761 | 3f78eef2 | Iustin Pop | utils.RemoveFile(fpath) |
2762 | 3f78eef2 | Iustin Pop | except EnvironmentError, err: |
2763 | 29921401 | Iustin Pop | logging.exception("Can't update bdev cache for %s: %s", dev_path, err) |