root / lib / backend.py @ 7d3a9fab
History | View | Annotate | Download (83.1 kB)
1 | 2f31098c | Iustin Pop | #
|
---|---|---|---|
2 | a8083063 | Iustin Pop | #
|
3 | a8083063 | Iustin Pop | |
4 | a8083063 | Iustin Pop | # Copyright (C) 2006, 2007 Google Inc.
|
5 | a8083063 | Iustin Pop | #
|
6 | a8083063 | Iustin Pop | # This program is free software; you can redistribute it and/or modify
|
7 | a8083063 | Iustin Pop | # it under the terms of the GNU General Public License as published by
|
8 | a8083063 | Iustin Pop | # the Free Software Foundation; either version 2 of the License, or
|
9 | a8083063 | Iustin Pop | # (at your option) any later version.
|
10 | a8083063 | Iustin Pop | #
|
11 | a8083063 | Iustin Pop | # This program is distributed in the hope that it will be useful, but
|
12 | a8083063 | Iustin Pop | # WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 | a8083063 | Iustin Pop | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
14 | a8083063 | Iustin Pop | # General Public License for more details.
|
15 | a8083063 | Iustin Pop | #
|
16 | a8083063 | Iustin Pop | # You should have received a copy of the GNU General Public License
|
17 | a8083063 | Iustin Pop | # along with this program; if not, write to the Free Software
|
18 | a8083063 | Iustin Pop | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
19 | a8083063 | Iustin Pop | # 02110-1301, USA.
|
20 | a8083063 | Iustin Pop | |
21 | a8083063 | Iustin Pop | |
22 | 360b0dc2 | Iustin Pop | """Functions used by the node daemon
|
23 | 360b0dc2 | Iustin Pop |
|
24 | 360b0dc2 | Iustin Pop | @var _ALLOWED_UPLOAD_FILES: denotes which files are accepted in
|
25 | 360b0dc2 | Iustin Pop | the L{UploadFile} function
|
26 | 360b0dc2 | Iustin Pop |
|
27 | 360b0dc2 | Iustin Pop | """
|
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"
|
55 | 13998ef2 | Michael Hanselmann | |
56 | 13998ef2 | Michael Hanselmann | |
57 | 2cc6781a | Iustin Pop | class RPCFail(Exception): |
58 | 2cc6781a | Iustin Pop | """Class denoting RPC failure.
|
59 | 2cc6781a | Iustin Pop |
|
60 | 2cc6781a | Iustin Pop | Its argument is the error message.
|
61 | 2cc6781a | Iustin Pop |
|
62 | 2cc6781a | Iustin Pop | """
|
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.
|
67 | 2cc6781a | Iustin Pop |
|
68 | 2cc6781a | Iustin Pop | This exception is then handled specially in the ganeti daemon and
|
69 | 2cc6781a | Iustin Pop | turned into a 'failed' return type. As such, this function is a
|
70 | 2cc6781a | Iustin Pop | useful shortcut for logging the error and returning it to the master
|
71 | 2cc6781a | Iustin Pop | daemon.
|
72 | 2cc6781a | Iustin Pop |
|
73 | 2cc6781a | Iustin Pop | @type msg: string
|
74 | 2cc6781a | Iustin Pop | @param msg: the text of the exception
|
75 | 2cc6781a | Iustin Pop | @raise RPCFail
|
76 | 2cc6781a | Iustin Pop |
|
77 | 2cc6781a | Iustin Pop | """
|
78 | 2cc6781a | Iustin Pop | if args:
|
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:
|
84 | afdc3985 | Iustin Pop | logging.error(msg) |
85 | 2cc6781a | Iustin Pop | raise RPCFail(msg)
|
86 | 2cc6781a | Iustin Pop | |
87 | 2cc6781a | Iustin Pop | |
88 | c657dcc9 | Michael Hanselmann | def _GetConfig(): |
89 | 93384844 | Iustin Pop | """Simple wrapper to return a SimpleStore.
|
90 | 10c2650b | Iustin Pop |
|
91 | 93384844 | Iustin Pop | @rtype: L{ssconf.SimpleStore}
|
92 | 93384844 | Iustin Pop | @return: a SimpleStore instance
|
93 | 10c2650b | Iustin Pop |
|
94 | 10c2650b | Iustin Pop | """
|
95 | 93384844 | Iustin Pop | return ssconf.SimpleStore()
|
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.
|
100 | 10c2650b | Iustin Pop |
|
101 | 10c2650b | Iustin Pop | @type cluster_name: str
|
102 | 10c2650b | Iustin Pop | @param cluster_name: the cluster name, which is needed
|
103 | 10c2650b | Iustin Pop | by the SshRunner constructor
|
104 | 10c2650b | Iustin Pop | @rtype: L{ssh.SshRunner}
|
105 | 10c2650b | Iustin Pop | @return: an SshRunner instance
|
106 | 10c2650b | Iustin Pop |
|
107 | 10c2650b | Iustin Pop | """
|
108 | 62c9ec92 | Iustin Pop | return ssh.SshRunner(cluster_name)
|
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.
|
113 | 12bce260 | Michael Hanselmann |
|
114 | 12bce260 | Michael Hanselmann | @type data: list or tuple
|
115 | 12bce260 | Michael Hanselmann | @param data: Data sent by RPC client
|
116 | 12bce260 | Michael Hanselmann | @rtype: str
|
117 | 12bce260 | Michael Hanselmann | @return: Decompressed data
|
118 | 12bce260 | Michael Hanselmann |
|
119 | 12bce260 | Michael Hanselmann | """
|
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:
|
124 | 12bce260 | Michael Hanselmann | return content
|
125 | 12bce260 | Michael Hanselmann | elif encoding == constants.RPC_ENCODING_ZLIB_BASE64:
|
126 | 12bce260 | Michael Hanselmann | return zlib.decompress(base64.b64decode(content))
|
127 | 12bce260 | Michael Hanselmann | else:
|
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.
|
133 | 76ab5558 | Michael Hanselmann |
|
134 | 10c2650b | Iustin Pop | @type path: str
|
135 | 10c2650b | Iustin Pop | @param path: the directory to clean
|
136 | 76ab5558 | Michael Hanselmann | @type exclude: list
|
137 | 10c2650b | Iustin Pop | @param exclude: list of files to be excluded, defaults
|
138 | 10c2650b | Iustin Pop | to the empty list
|
139 | 76ab5558 | Michael Hanselmann |
|
140 | 76ab5558 | Michael Hanselmann | """
|
141 | 3956cee1 | Michael Hanselmann | if not os.path.isdir(path): |
142 | 3956cee1 | Michael Hanselmann | return
|
143 | 3bc6be5c | Iustin Pop | if exclude is None: |
144 | 3bc6be5c | Iustin Pop | exclude = [] |
145 | 3bc6be5c | Iustin Pop | else:
|
146 | 3bc6be5c | Iustin Pop | # Normalize excluded paths
|
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
|
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.
|
159 | 360b0dc2 | Iustin Pop |
|
160 | 360b0dc2 | Iustin Pop | This is abstracted so that it's built only once at module import time.
|
161 | 360b0dc2 | Iustin Pop |
|
162 | 360b0dc2 | Iustin Pop | """
|
163 | b397a7d2 | Iustin Pop | allowed_files = set([
|
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.
|
185 | 10c2650b | Iustin Pop |
|
186 | c8457ce7 | Iustin Pop | @rtype: tuple
|
187 | c8457ce7 | Iustin Pop | @return: True, None
|
188 | 24fc781f | Michael Hanselmann |
|
189 | 24fc781f | Michael Hanselmann | """
|
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.
|
196 | bd1e4562 | Iustin Pop |
|
197 | bd1e4562 | Iustin Pop | This is an utility function to compute master information, either
|
198 | bd1e4562 | Iustin Pop | for consumption here or from the node daemon.
|
199 | bd1e4562 | Iustin Pop |
|
200 | bd1e4562 | Iustin Pop | @rtype: tuple
|
201 | c26a6bd2 | Iustin Pop | @return: master_netdev, master_ip, master_name
|
202 | 2a52a064 | Iustin Pop | @raise RPCFail: in case of errors
|
203 | b1b6ea87 | Iustin Pop |
|
204 | b1b6ea87 | Iustin Pop | """
|
205 | b1b6ea87 | Iustin Pop | try:
|
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:
|
211 | 29921401 | Iustin Pop | _Fail("Cluster configuration incomplete: %s", err, exc=True) |
212 | bd1e4562 | Iustin Pop | return (master_netdev, master_ip, master_node)
|
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.
|
217 | a8083063 | Iustin Pop |
|
218 | 1c65840b | Iustin Pop | The function will always try activate the IP address of the master
|
219 | 10c2650b | Iustin Pop | (unless someone else has it). It will also start the master daemons,
|
220 | 10c2650b | Iustin Pop | based on the start_daemons parameter.
|
221 | 10c2650b | Iustin Pop |
|
222 | 10c2650b | Iustin Pop | @type start_daemons: boolean
|
223 | c26a6bd2 | Iustin Pop | @param start_daemons: whether to also start the master
|
224 | 10c2650b | Iustin Pop | daemons (ganeti-masterd and ganeti-rapi)
|
225 | 3583908a | Guido Trotter | @type no_voting: boolean
|
226 | 3583908a | Guido Trotter | @param no_voting: whether to start ganeti-masterd without a node vote
|
227 | 3583908a | Guido Trotter | (if start_daemons is True), but still non-interactively
|
228 | 10c2650b | Iustin Pop | @rtype: None
|
229 | a8083063 | Iustin Pop |
|
230 | a8083063 | Iustin Pop | """
|
231 | 2a52a064 | Iustin Pop | # GetMasterInfo will raise an exception if not able to return data
|
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):
|
236 | caad16e2 | Iustin Pop | if utils.OwnIpAddress(master_ip):
|
237 | b1b6ea87 | Iustin Pop | # we already have the ip:
|
238 | b726aff0 | Iustin Pop | logging.debug("Master IP already configured, doing nothing")
|
239 | b1b6ea87 | Iustin Pop | else:
|
240 | b726aff0 | Iustin Pop | msg = "Someone else has the master ip, not activating"
|
241 | b726aff0 | Iustin Pop | logging.error(msg) |
242 | 396b5733 | Iustin Pop | err_msgs.append(msg) |
243 | b1b6ea87 | Iustin Pop | else:
|
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])
|
247 | b1b6ea87 | Iustin Pop | if result.failed:
|
248 | b726aff0 | Iustin Pop | msg = "Can't activate master IP: %s" % result.output
|
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])
|
254 | b1b6ea87 | Iustin Pop | # we'll ignore the exit code of arping
|
255 | b1b6ea87 | Iustin Pop | |
256 | b1b6ea87 | Iustin Pop | # and now start the master and rapi daemons
|
257 | b1b6ea87 | Iustin Pop | if start_daemons:
|
258 | 3583908a | Guido Trotter | daemons_params = { |
259 | 3583908a | Guido Trotter | 'ganeti-masterd': [],
|
260 | 3583908a | Guido Trotter | 'ganeti-rapi': [],
|
261 | 3583908a | Guido Trotter | } |
262 | 3583908a | Guido Trotter | if no_voting:
|
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:
|
270 | b726aff0 | Iustin Pop | msg = "Can't start daemon %s: %s" % (daemon, result.output)
|
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:
|
275 | 396b5733 | Iustin Pop | _Fail("; ".join(err_msgs))
|
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.
|
280 | a8083063 | Iustin Pop |
|
281 | 1c65840b | Iustin Pop | The function will always try to deactivate the IP address of the
|
282 | 10c2650b | Iustin Pop | master. It will also stop the master daemons depending on the
|
283 | 10c2650b | Iustin Pop | stop_daemons parameter.
|
284 | 10c2650b | Iustin Pop |
|
285 | 10c2650b | Iustin Pop | @type stop_daemons: boolean
|
286 | 10c2650b | Iustin Pop | @param stop_daemons: whether to also stop the master daemons
|
287 | 10c2650b | Iustin Pop | (ganeti-masterd and ganeti-rapi)
|
288 | 10c2650b | Iustin Pop | @rtype: None
|
289 | a8083063 | Iustin Pop |
|
290 | a8083063 | Iustin Pop | """
|
291 | 6c00d19a | Iustin Pop | # TODO: log and report back to the caller the error failures; we
|
292 | 6c00d19a | Iustin Pop | # need to decide in which case we fail the RPC for this
|
293 | 2a52a064 | Iustin Pop | |
294 | 2a52a064 | Iustin Pop | # GetMasterInfo will raise an exception if not able to return data
|
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])
|
299 | a8083063 | Iustin Pop | if result.failed:
|
300 | 3b9e6a30 | Iustin Pop | logging.error("Can't remove the master IP, error: %s", result.output)
|
301 | b1b6ea87 | Iustin Pop | # but otherwise ignore the failure
|
302 | b1b6ea87 | Iustin Pop | |
303 | b1b6ea87 | Iustin Pop | if stop_daemons:
|
304 | b1b6ea87 | Iustin Pop | # stop/kill the rapi and the master daemon
|
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.
|
311 | a8083063 | Iustin Pop |
|
312 | 7900ed01 | Iustin Pop | This does the following:
|
313 | 7900ed01 | Iustin Pop | - updates the hostkeys of the machine (rsa and dsa)
|
314 | 7900ed01 | Iustin Pop | - adds the ssh private key to the user
|
315 | 7900ed01 | Iustin Pop | - adds the ssh public key to the users' authorized_keys file
|
316 | a8083063 | Iustin Pop |
|
317 | 10c2650b | Iustin Pop | @type dsa: str
|
318 | 10c2650b | Iustin Pop | @param dsa: the DSA private key to write
|
319 | 10c2650b | Iustin Pop | @type dsapub: str
|
320 | 10c2650b | Iustin Pop | @param dsapub: the DSA public key to write
|
321 | 10c2650b | Iustin Pop | @type rsa: str
|
322 | 10c2650b | Iustin Pop | @param rsa: the RSA private key to write
|
323 | 10c2650b | Iustin Pop | @type rsapub: str
|
324 | 10c2650b | Iustin Pop | @param rsapub: the RSA public key to write
|
325 | 10c2650b | Iustin Pop | @type sshkey: str
|
326 | 10c2650b | Iustin Pop | @param sshkey: the SSH private key to write
|
327 | 10c2650b | Iustin Pop | @type sshpub: str
|
328 | 10c2650b | Iustin Pop | @param sshpub: the SSH public key to write
|
329 | 10c2650b | Iustin Pop | @rtype: boolean
|
330 | 10c2650b | Iustin Pop | @return: the success of the operation
|
331 | 10c2650b | Iustin Pop |
|
332 | 7900ed01 | Iustin Pop | """
|
333 | 70d9e3d8 | Iustin Pop | sshd_keys = [(constants.SSH_HOST_RSA_PRIV, rsa, 0600),
|
334 | 70d9e3d8 | Iustin Pop | (constants.SSH_HOST_RSA_PUB, rsapub, 0644),
|
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 | 0623d351 | Iustin Pop | # Raise a custom exception (handled in ganeti-noded)
|
379 | 0623d351 | Iustin Pop | raise errors.QuitGanetiException(True, 'Shutdown scheduled') |
380 | 6d8b6238 | Guido Trotter | |
381 | a8083063 | Iustin Pop | |
382 | e69d05fd | Iustin Pop | def GetNodeInfo(vgname, hypervisor_type): |
383 | 5bbd3f7f | Michael Hanselmann | """Gives back a hash with different information about the node.
|
384 | a8083063 | Iustin Pop |
|
385 | e69d05fd | Iustin Pop | @type vgname: C{string}
|
386 | e69d05fd | Iustin Pop | @param vgname: the name of the volume group to ask for disk space information
|
387 | e69d05fd | Iustin Pop | @type hypervisor_type: C{str}
|
388 | e69d05fd | Iustin Pop | @param hypervisor_type: the name of the hypervisor to ask for
|
389 | e69d05fd | Iustin Pop | memory information
|
390 | e69d05fd | Iustin Pop | @rtype: C{dict}
|
391 | e69d05fd | Iustin Pop | @return: dictionary with the following keys:
|
392 | e69d05fd | Iustin Pop | - vg_size is the size of the configured volume group in MiB
|
393 | e69d05fd | Iustin Pop | - vg_free is the free size of the volume group in MiB
|
394 | e69d05fd | Iustin Pop | - memory_dom0 is the memory allocated for domain0 in MiB
|
395 | e69d05fd | Iustin Pop | - memory_free is the currently available (free) ram in MiB
|
396 | e69d05fd | Iustin Pop | - memory_total is the total number of ram in MiB
|
397 | a8083063 | Iustin Pop |
|
398 | 098c0958 | Michael Hanselmann | """
|
399 | a8083063 | Iustin Pop | outputarray = {} |
400 | a8083063 | Iustin Pop | vginfo = _GetVGInfo(vgname) |
401 | a8083063 | Iustin Pop | outputarray['vg_size'] = vginfo['vg_size'] |
402 | a8083063 | Iustin Pop | outputarray['vg_free'] = vginfo['vg_free'] |
403 | a8083063 | Iustin Pop | |
404 | e69d05fd | Iustin Pop | hyper = hypervisor.GetHypervisor(hypervisor_type) |
405 | a8083063 | Iustin Pop | hyp_info = hyper.GetNodeInfo() |
406 | a8083063 | Iustin Pop | if hyp_info is not None: |
407 | a8083063 | Iustin Pop | outputarray.update(hyp_info) |
408 | a8083063 | Iustin Pop | |
409 | 13998ef2 | Michael Hanselmann | outputarray["bootid"] = utils.ReadFile(_BOOT_ID_PATH, size=128).rstrip("\n") |
410 | 3ef10550 | Michael Hanselmann | |
411 | c26a6bd2 | Iustin Pop | return outputarray
|
412 | a8083063 | Iustin Pop | |
413 | a8083063 | Iustin Pop | |
414 | 62c9ec92 | Iustin Pop | def VerifyNode(what, cluster_name): |
415 | a8083063 | Iustin Pop | """Verify the status of the local node.
|
416 | a8083063 | Iustin Pop |
|
417 | e69d05fd | Iustin Pop | Based on the input L{what} parameter, various checks are done on the
|
418 | e69d05fd | Iustin Pop | local node.
|
419 | e69d05fd | Iustin Pop |
|
420 | e69d05fd | Iustin Pop | If the I{filelist} key is present, this list of
|
421 | e69d05fd | Iustin Pop | files is checksummed and the file/checksum pairs are returned.
|
422 | e69d05fd | Iustin Pop |
|
423 | e69d05fd | Iustin Pop | If the I{nodelist} key is present, we check that we have
|
424 | e69d05fd | Iustin Pop | connectivity via ssh with the target nodes (and check the hostname
|
425 | e69d05fd | Iustin Pop | report).
|
426 | a8083063 | Iustin Pop |
|
427 | e69d05fd | Iustin Pop | If the I{node-net-test} key is present, we check that we have
|
428 | e69d05fd | Iustin Pop | connectivity to the given nodes via both primary IP and, if
|
429 | e69d05fd | Iustin Pop | applicable, secondary IPs.
|
430 | e69d05fd | Iustin Pop |
|
431 | e69d05fd | Iustin Pop | @type what: C{dict}
|
432 | e69d05fd | Iustin Pop | @param what: a dictionary of things to check:
|
433 | e69d05fd | Iustin Pop | - filelist: list of files for which to compute checksums
|
434 | e69d05fd | Iustin Pop | - nodelist: list of nodes we should check ssh communication with
|
435 | e69d05fd | Iustin Pop | - node-net-test: list of nodes we should check node daemon port
|
436 | e69d05fd | Iustin Pop | connectivity with
|
437 | e69d05fd | Iustin Pop | - hypervisor: list with hypervisors to run the verify for
|
438 | 10c2650b | Iustin Pop | @rtype: dict
|
439 | 10c2650b | Iustin Pop | @return: a dictionary with the same keys as the input dict, and
|
440 | 10c2650b | Iustin Pop | values representing the result of the checks
|
441 | a8083063 | Iustin Pop |
|
442 | a8083063 | Iustin Pop | """
|
443 | a8083063 | Iustin Pop | result = {} |
444 | a8083063 | Iustin Pop | |
445 | 25361b9a | Iustin Pop | if constants.NV_HYPERVISOR in what: |
446 | 25361b9a | Iustin Pop | result[constants.NV_HYPERVISOR] = tmp = {} |
447 | 25361b9a | Iustin Pop | for hv_name in what[constants.NV_HYPERVISOR]: |
448 | 25361b9a | Iustin Pop | tmp[hv_name] = hypervisor.GetHypervisor(hv_name).Verify() |
449 | 25361b9a | Iustin Pop | |
450 | 25361b9a | Iustin Pop | if constants.NV_FILELIST in what: |
451 | 25361b9a | Iustin Pop | result[constants.NV_FILELIST] = utils.FingerprintFiles( |
452 | 25361b9a | Iustin Pop | what[constants.NV_FILELIST]) |
453 | 25361b9a | Iustin Pop | |
454 | 25361b9a | Iustin Pop | if constants.NV_NODELIST in what: |
455 | 25361b9a | Iustin Pop | result[constants.NV_NODELIST] = tmp = {} |
456 | 25361b9a | Iustin Pop | random.shuffle(what[constants.NV_NODELIST]) |
457 | 25361b9a | Iustin Pop | for node in what[constants.NV_NODELIST]: |
458 | 62c9ec92 | Iustin Pop | success, message = _GetSshRunner(cluster_name).VerifyNodeHostname(node) |
459 | a8083063 | Iustin Pop | if not success: |
460 | 25361b9a | Iustin Pop | tmp[node] = message |
461 | 25361b9a | Iustin Pop | |
462 | 25361b9a | Iustin Pop | if constants.NV_NODENETTEST in what: |
463 | 25361b9a | Iustin Pop | result[constants.NV_NODENETTEST] = tmp = {} |
464 | 9d4bfc96 | Iustin Pop | my_name = utils.HostInfo().name |
465 | 9d4bfc96 | Iustin Pop | my_pip = my_sip = None
|
466 | 25361b9a | Iustin Pop | for name, pip, sip in what[constants.NV_NODENETTEST]: |
467 | 9d4bfc96 | Iustin Pop | if name == my_name:
|
468 | 9d4bfc96 | Iustin Pop | my_pip = pip |
469 | 9d4bfc96 | Iustin Pop | my_sip = sip |
470 | 9d4bfc96 | Iustin Pop | break
|
471 | 9d4bfc96 | Iustin Pop | if not my_pip: |
472 | 25361b9a | Iustin Pop | tmp[my_name] = ("Can't find my own primary/secondary IP"
|
473 | 25361b9a | Iustin Pop | " in the node list")
|
474 | 9d4bfc96 | Iustin Pop | else:
|
475 | cd50653c | Guido Trotter | port = utils.GetDaemonPort(constants.NODED) |
476 | 25361b9a | Iustin Pop | for name, pip, sip in what[constants.NV_NODENETTEST]: |
477 | 9d4bfc96 | Iustin Pop | fail = [] |
478 | 9d4bfc96 | Iustin Pop | if not utils.TcpPing(pip, port, source=my_pip): |
479 | 9d4bfc96 | Iustin Pop | fail.append("primary")
|
480 | 9d4bfc96 | Iustin Pop | if sip != pip:
|
481 | 9d4bfc96 | Iustin Pop | if not utils.TcpPing(sip, port, source=my_sip): |
482 | 9d4bfc96 | Iustin Pop | fail.append("secondary")
|
483 | 9d4bfc96 | Iustin Pop | if fail:
|
484 | 25361b9a | Iustin Pop | tmp[name] = ("failure using the %s interface(s)" %
|
485 | 25361b9a | Iustin Pop | " and ".join(fail))
|
486 | 25361b9a | Iustin Pop | |
487 | 25361b9a | Iustin Pop | if constants.NV_LVLIST in what: |
488 | 25361b9a | Iustin Pop | result[constants.NV_LVLIST] = GetVolumeList(what[constants.NV_LVLIST]) |
489 | 25361b9a | Iustin Pop | |
490 | 25361b9a | Iustin Pop | if constants.NV_INSTANCELIST in what: |
491 | 25361b9a | Iustin Pop | result[constants.NV_INSTANCELIST] = GetInstanceList( |
492 | 25361b9a | Iustin Pop | what[constants.NV_INSTANCELIST]) |
493 | 25361b9a | Iustin Pop | |
494 | 25361b9a | Iustin Pop | if constants.NV_VGLIST in what: |
495 | e480923b | Iustin Pop | result[constants.NV_VGLIST] = utils.ListVolumeGroups() |
496 | 25361b9a | Iustin Pop | |
497 | 25361b9a | Iustin Pop | if constants.NV_VERSION in what: |
498 | e9ce0a64 | Iustin Pop | result[constants.NV_VERSION] = (constants.PROTOCOL_VERSION, |
499 | e9ce0a64 | Iustin Pop | constants.RELEASE_VERSION) |
500 | 25361b9a | Iustin Pop | |
501 | 25361b9a | Iustin Pop | if constants.NV_HVINFO in what: |
502 | 25361b9a | Iustin Pop | hyper = hypervisor.GetHypervisor(what[constants.NV_HVINFO]) |
503 | 25361b9a | Iustin Pop | result[constants.NV_HVINFO] = hyper.GetNodeInfo() |
504 | 9d4bfc96 | Iustin Pop | |
505 | 6d2e83d5 | Iustin Pop | if constants.NV_DRBDLIST in what: |
506 | 6d2e83d5 | Iustin Pop | try:
|
507 | 6d2e83d5 | Iustin Pop | used_minors = bdev.DRBD8.GetUsedDevs().keys() |
508 | f6eaed12 | Iustin Pop | except errors.BlockDeviceError, err:
|
509 | 6d2e83d5 | Iustin Pop | logging.warning("Can't get used minors list", exc_info=True) |
510 | f6eaed12 | Iustin Pop | used_minors = str(err)
|
511 | 6d2e83d5 | Iustin Pop | result[constants.NV_DRBDLIST] = used_minors |
512 | 6d2e83d5 | Iustin Pop | |
513 | c26a6bd2 | Iustin Pop | return result
|
514 | a8083063 | Iustin Pop | |
515 | a8083063 | Iustin Pop | |
516 | a8083063 | Iustin Pop | def GetVolumeList(vg_name): |
517 | a8083063 | Iustin Pop | """Compute list of logical volumes and their size.
|
518 | a8083063 | Iustin Pop |
|
519 | 10c2650b | Iustin Pop | @type vg_name: str
|
520 | 10c2650b | Iustin Pop | @param vg_name: the volume group whose LVs we should list
|
521 | 10c2650b | Iustin Pop | @rtype: dict
|
522 | 10c2650b | Iustin Pop | @return:
|
523 | 10c2650b | Iustin Pop | dictionary of all partions (key) with value being a tuple of
|
524 | 10c2650b | Iustin Pop | their size (in MiB), inactive and online status::
|
525 | 10c2650b | Iustin Pop |
|
526 | 10c2650b | Iustin Pop | {'test1': ('20.06', True, True)}
|
527 | 10c2650b | Iustin Pop |
|
528 | 10c2650b | Iustin Pop | in case of errors, a string is returned with the error
|
529 | 10c2650b | Iustin Pop | details.
|
530 | a8083063 | Iustin Pop |
|
531 | a8083063 | Iustin Pop | """
|
532 | cb2037a2 | Iustin Pop | lvs = {} |
533 | cb2037a2 | Iustin Pop | sep = '|'
|
534 | cb2037a2 | Iustin Pop | result = utils.RunCmd(["lvs", "--noheadings", "--units=m", "--nosuffix", |
535 | cb2037a2 | Iustin Pop | "--separator=%s" % sep,
|
536 | cb2037a2 | Iustin Pop | "-olv_name,lv_size,lv_attr", vg_name])
|
537 | a8083063 | Iustin Pop | if result.failed:
|
538 | 29d376ec | Iustin Pop | _Fail("Failed to list logical volumes, lvs output: %s", result.output)
|
539 | cb2037a2 | Iustin Pop | |
540 | df4c2628 | Iustin Pop | valid_line_re = re.compile("^ *([^|]+)\|([0-9.]+)\|([^|]{6})\|?$")
|
541 | cb2037a2 | Iustin Pop | for line in result.stdout.splitlines(): |
542 | df4c2628 | Iustin Pop | line = line.strip() |
543 | df4c2628 | Iustin Pop | match = valid_line_re.match(line) |
544 | df4c2628 | Iustin Pop | if not match: |
545 | 18682bca | Iustin Pop | logging.error("Invalid line returned from lvs output: '%s'", line)
|
546 | df4c2628 | Iustin Pop | continue
|
547 | df4c2628 | Iustin Pop | name, size, attr = match.groups() |
548 | cb2037a2 | Iustin Pop | inactive = attr[4] == '-' |
549 | cb2037a2 | Iustin Pop | online = attr[5] == 'o' |
550 | 33f2a81a | Iustin Pop | virtual = attr[0] == 'v' |
551 | 33f2a81a | Iustin Pop | if virtual:
|
552 | 33f2a81a | Iustin Pop | # we don't want to report such volumes as existing, since they
|
553 | 33f2a81a | Iustin Pop | # don't really hold data
|
554 | 33f2a81a | Iustin Pop | continue
|
555 | cb2037a2 | Iustin Pop | lvs[name] = (size, inactive, online) |
556 | cb2037a2 | Iustin Pop | |
557 | cb2037a2 | Iustin Pop | return lvs
|
558 | a8083063 | Iustin Pop | |
559 | a8083063 | Iustin Pop | |
560 | a8083063 | Iustin Pop | def ListVolumeGroups(): |
561 | 2f8598a5 | Alexander Schreiber | """List the volume groups and their size.
|
562 | a8083063 | Iustin Pop |
|
563 | 10c2650b | Iustin Pop | @rtype: dict
|
564 | 10c2650b | Iustin Pop | @return: dictionary with keys volume name and values the
|
565 | 10c2650b | Iustin Pop | size of the volume
|
566 | a8083063 | Iustin Pop |
|
567 | a8083063 | Iustin Pop | """
|
568 | c26a6bd2 | Iustin Pop | return utils.ListVolumeGroups()
|
569 | a8083063 | Iustin Pop | |
570 | a8083063 | Iustin Pop | |
571 | dcb93971 | Michael Hanselmann | def NodeVolumes(): |
572 | dcb93971 | Michael Hanselmann | """List all volumes on this node.
|
573 | dcb93971 | Michael Hanselmann |
|
574 | 10c2650b | Iustin Pop | @rtype: list
|
575 | 10c2650b | Iustin Pop | @return:
|
576 | 10c2650b | Iustin Pop | A list of dictionaries, each having four keys:
|
577 | 10c2650b | Iustin Pop | - name: the logical volume name,
|
578 | 10c2650b | Iustin Pop | - size: the size of the logical volume
|
579 | 10c2650b | Iustin Pop | - dev: the physical device on which the LV lives
|
580 | 10c2650b | Iustin Pop | - vg: the volume group to which it belongs
|
581 | 10c2650b | Iustin Pop |
|
582 | 10c2650b | Iustin Pop | In case of errors, we return an empty list and log the
|
583 | 10c2650b | Iustin Pop | error.
|
584 | 10c2650b | Iustin Pop |
|
585 | 10c2650b | Iustin Pop | Note that since a logical volume can live on multiple physical
|
586 | 10c2650b | Iustin Pop | volumes, the resulting list might include a logical volume
|
587 | 10c2650b | Iustin Pop | multiple times.
|
588 | 10c2650b | Iustin Pop |
|
589 | dcb93971 | Michael Hanselmann | """
|
590 | dcb93971 | Michael Hanselmann | result = utils.RunCmd(["lvs", "--noheadings", "--units=m", "--nosuffix", |
591 | dcb93971 | Michael Hanselmann | "--separator=|",
|
592 | dcb93971 | Michael Hanselmann | "--options=lv_name,lv_size,devices,vg_name"])
|
593 | dcb93971 | Michael Hanselmann | if result.failed:
|
594 | 10bfe6cb | Iustin Pop | _Fail("Failed to list logical volumes, lvs output: %s",
|
595 | 10bfe6cb | Iustin Pop | result.output) |
596 | dcb93971 | Michael Hanselmann | |
597 | dcb93971 | Michael Hanselmann | def parse_dev(dev): |
598 | dcb93971 | Michael Hanselmann | if '(' in dev: |
599 | dcb93971 | Michael Hanselmann | return dev.split('(')[0] |
600 | dcb93971 | Michael Hanselmann | else:
|
601 | dcb93971 | Michael Hanselmann | return dev
|
602 | dcb93971 | Michael Hanselmann | |
603 | dcb93971 | Michael Hanselmann | def map_line(line): |
604 | dcb93971 | Michael Hanselmann | return {
|
605 | dcb93971 | Michael Hanselmann | 'name': line[0].strip(), |
606 | dcb93971 | Michael Hanselmann | 'size': line[1].strip(), |
607 | dcb93971 | Michael Hanselmann | 'dev': parse_dev(line[2].strip()), |
608 | dcb93971 | Michael Hanselmann | 'vg': line[3].strip(), |
609 | dcb93971 | Michael Hanselmann | } |
610 | dcb93971 | Michael Hanselmann | |
611 | c26a6bd2 | Iustin Pop | return [map_line(line.split('|')) for line in result.stdout.splitlines() |
612 | c26a6bd2 | Iustin Pop | if line.count('|') >= 3] |
613 | dcb93971 | Michael Hanselmann | |
614 | dcb93971 | Michael Hanselmann | |
615 | a8083063 | Iustin Pop | def BridgesExist(bridges_list): |
616 | 2f8598a5 | Alexander Schreiber | """Check if a list of bridges exist on the current node.
|
617 | a8083063 | Iustin Pop |
|
618 | b1206984 | Iustin Pop | @rtype: boolean
|
619 | b1206984 | Iustin Pop | @return: C{True} if all of them exist, C{False} otherwise
|
620 | a8083063 | Iustin Pop |
|
621 | a8083063 | Iustin Pop | """
|
622 | 35c0c8da | Iustin Pop | missing = [] |
623 | a8083063 | Iustin Pop | for bridge in bridges_list: |
624 | a8083063 | Iustin Pop | if not utils.BridgeExists(bridge): |
625 | 35c0c8da | Iustin Pop | missing.append(bridge) |
626 | a8083063 | Iustin Pop | |
627 | 35c0c8da | Iustin Pop | if missing:
|
628 | afdc3985 | Iustin Pop | _Fail("Missing bridges %s", ", ".join(missing)) |
629 | 35c0c8da | Iustin Pop | |
630 | a8083063 | Iustin Pop | |
631 | e69d05fd | Iustin Pop | def GetInstanceList(hypervisor_list): |
632 | 2f8598a5 | Alexander Schreiber | """Provides a list of instances.
|
633 | a8083063 | Iustin Pop |
|
634 | e69d05fd | Iustin Pop | @type hypervisor_list: list
|
635 | e69d05fd | Iustin Pop | @param hypervisor_list: the list of hypervisors to query information
|
636 | e69d05fd | Iustin Pop |
|
637 | e69d05fd | Iustin Pop | @rtype: list
|
638 | e69d05fd | Iustin Pop | @return: a list of all running instances on the current node
|
639 | 10c2650b | Iustin Pop | - instance1.example.com
|
640 | 10c2650b | Iustin Pop | - instance2.example.com
|
641 | a8083063 | Iustin Pop |
|
642 | 098c0958 | Michael Hanselmann | """
|
643 | e69d05fd | Iustin Pop | results = [] |
644 | e69d05fd | Iustin Pop | for hname in hypervisor_list: |
645 | e69d05fd | Iustin Pop | try:
|
646 | e69d05fd | Iustin Pop | names = hypervisor.GetHypervisor(hname).ListInstances() |
647 | e69d05fd | Iustin Pop | results.extend(names) |
648 | e69d05fd | Iustin Pop | except errors.HypervisorError, err:
|
649 | aca13712 | Iustin Pop | _Fail("Error enumerating instances (hypervisor %s): %s",
|
650 | aca13712 | Iustin Pop | hname, err, exc=True)
|
651 | a8083063 | Iustin Pop | |
652 | e69d05fd | Iustin Pop | return results
|
653 | a8083063 | Iustin Pop | |
654 | a8083063 | Iustin Pop | |
655 | e69d05fd | Iustin Pop | def GetInstanceInfo(instance, hname): |
656 | 5bbd3f7f | Michael Hanselmann | """Gives back the information about an instance as a dictionary.
|
657 | a8083063 | Iustin Pop |
|
658 | e69d05fd | Iustin Pop | @type instance: string
|
659 | e69d05fd | Iustin Pop | @param instance: the instance name
|
660 | e69d05fd | Iustin Pop | @type hname: string
|
661 | e69d05fd | Iustin Pop | @param hname: the hypervisor type of the instance
|
662 | a8083063 | Iustin Pop |
|
663 | e69d05fd | Iustin Pop | @rtype: dict
|
664 | e69d05fd | Iustin Pop | @return: dictionary with the following keys:
|
665 | e69d05fd | Iustin Pop | - memory: memory size of instance (int)
|
666 | e69d05fd | Iustin Pop | - state: xen state of instance (string)
|
667 | e69d05fd | Iustin Pop | - time: cpu time of instance (float)
|
668 | a8083063 | Iustin Pop |
|
669 | 098c0958 | Michael Hanselmann | """
|
670 | a8083063 | Iustin Pop | output = {} |
671 | a8083063 | Iustin Pop | |
672 | e69d05fd | Iustin Pop | iinfo = hypervisor.GetHypervisor(hname).GetInstanceInfo(instance) |
673 | a8083063 | Iustin Pop | if iinfo is not None: |
674 | a8083063 | Iustin Pop | output['memory'] = iinfo[2] |
675 | a8083063 | Iustin Pop | output['state'] = iinfo[4] |
676 | a8083063 | Iustin Pop | output['time'] = iinfo[5] |
677 | a8083063 | Iustin Pop | |
678 | c26a6bd2 | Iustin Pop | return output
|
679 | a8083063 | Iustin Pop | |
680 | a8083063 | Iustin Pop | |
681 | 56e7640c | Iustin Pop | def GetInstanceMigratable(instance): |
682 | 56e7640c | Iustin Pop | """Gives whether an instance can be migrated.
|
683 | 56e7640c | Iustin Pop |
|
684 | 56e7640c | Iustin Pop | @type instance: L{objects.Instance}
|
685 | 56e7640c | Iustin Pop | @param instance: object representing the instance to be checked.
|
686 | 56e7640c | Iustin Pop |
|
687 | 56e7640c | Iustin Pop | @rtype: tuple
|
688 | 56e7640c | Iustin Pop | @return: tuple of (result, description) where:
|
689 | 56e7640c | Iustin Pop | - result: whether the instance can be migrated or not
|
690 | 56e7640c | Iustin Pop | - description: a description of the issue, if relevant
|
691 | 56e7640c | Iustin Pop |
|
692 | 56e7640c | Iustin Pop | """
|
693 | 56e7640c | Iustin Pop | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
694 | afdc3985 | Iustin Pop | iname = instance.name |
695 | afdc3985 | Iustin Pop | if iname not in hyper.ListInstances(): |
696 | afdc3985 | Iustin Pop | _Fail("Instance %s is not running", iname)
|
697 | 56e7640c | Iustin Pop | |
698 | 56e7640c | Iustin Pop | for idx in range(len(instance.disks)): |
699 | afdc3985 | Iustin Pop | link_name = _GetBlockDevSymlinkPath(iname, idx) |
700 | 56e7640c | Iustin Pop | if not os.path.islink(link_name): |
701 | afdc3985 | Iustin Pop | _Fail("Instance %s was not restarted since ganeti 1.2.5", iname)
|
702 | 56e7640c | Iustin Pop | |
703 | 56e7640c | Iustin Pop | |
704 | e69d05fd | Iustin Pop | def GetAllInstancesInfo(hypervisor_list): |
705 | a8083063 | Iustin Pop | """Gather data about all instances.
|
706 | a8083063 | Iustin Pop |
|
707 | 10c2650b | Iustin Pop | This is the equivalent of L{GetInstanceInfo}, except that it
|
708 | a8083063 | Iustin Pop | computes data for all instances at once, thus being faster if one
|
709 | a8083063 | Iustin Pop | needs data about more than one instance.
|
710 | a8083063 | Iustin Pop |
|
711 | e69d05fd | Iustin Pop | @type hypervisor_list: list
|
712 | e69d05fd | Iustin Pop | @param hypervisor_list: list of hypervisors to query for instance data
|
713 | e69d05fd | Iustin Pop |
|
714 | 955db481 | Guido Trotter | @rtype: dict
|
715 | e69d05fd | Iustin Pop | @return: dictionary of instance: data, with data having the following keys:
|
716 | e69d05fd | Iustin Pop | - memory: memory size of instance (int)
|
717 | e69d05fd | Iustin Pop | - state: xen state of instance (string)
|
718 | e69d05fd | Iustin Pop | - time: cpu time of instance (float)
|
719 | 10c2650b | Iustin Pop | - vcpus: the number of vcpus
|
720 | a8083063 | Iustin Pop |
|
721 | 098c0958 | Michael Hanselmann | """
|
722 | a8083063 | Iustin Pop | output = {} |
723 | a8083063 | Iustin Pop | |
724 | e69d05fd | Iustin Pop | for hname in hypervisor_list: |
725 | e69d05fd | Iustin Pop | iinfo = hypervisor.GetHypervisor(hname).GetAllInstancesInfo() |
726 | e69d05fd | Iustin Pop | if iinfo:
|
727 | 29921401 | Iustin Pop | for name, _, memory, vcpus, state, times in iinfo: |
728 | f23b5ae8 | Iustin Pop | value = { |
729 | e69d05fd | Iustin Pop | 'memory': memory,
|
730 | e69d05fd | Iustin Pop | 'vcpus': vcpus,
|
731 | e69d05fd | Iustin Pop | 'state': state,
|
732 | e69d05fd | Iustin Pop | 'time': times,
|
733 | e69d05fd | Iustin Pop | } |
734 | b33b6f55 | Iustin Pop | if name in output: |
735 | b33b6f55 | Iustin Pop | # we only check static parameters, like memory and vcpus,
|
736 | b33b6f55 | Iustin Pop | # and not state and time which can change between the
|
737 | b33b6f55 | Iustin Pop | # invocations of the different hypervisors
|
738 | b33b6f55 | Iustin Pop | for key in 'memory', 'vcpus': |
739 | b33b6f55 | Iustin Pop | if value[key] != output[name][key]:
|
740 | 2fa74ef4 | Iustin Pop | _Fail("Instance %s is running twice"
|
741 | 2fa74ef4 | Iustin Pop | " with different parameters", name)
|
742 | f23b5ae8 | Iustin Pop | output[name] = value |
743 | a8083063 | Iustin Pop | |
744 | c26a6bd2 | Iustin Pop | return output
|
745 | a8083063 | Iustin Pop | |
746 | a8083063 | Iustin Pop | |
747 | e557bae9 | Guido Trotter | def InstanceOsAdd(instance, reinstall): |
748 | 2f8598a5 | Alexander Schreiber | """Add an OS to an instance.
|
749 | a8083063 | Iustin Pop |
|
750 | d15a9ad3 | Guido Trotter | @type instance: L{objects.Instance}
|
751 | d15a9ad3 | Guido Trotter | @param instance: Instance whose OS is to be installed
|
752 | e557bae9 | Guido Trotter | @type reinstall: boolean
|
753 | e557bae9 | Guido Trotter | @param reinstall: whether this is an instance reinstall
|
754 | c26a6bd2 | Iustin Pop | @rtype: None
|
755 | a8083063 | Iustin Pop |
|
756 | a8083063 | Iustin Pop | """
|
757 | 255dcebd | Iustin Pop | inst_os = OSFromDisk(instance.os) |
758 | 255dcebd | Iustin Pop | |
759 | d1a7d66f | Guido Trotter | create_env = OSEnvironment(instance, inst_os) |
760 | e557bae9 | Guido Trotter | if reinstall:
|
761 | e557bae9 | Guido Trotter | create_env['INSTANCE_REINSTALL'] = "1" |
762 | a8083063 | Iustin Pop | |
763 | a8083063 | Iustin Pop | logfile = "%s/add-%s-%s-%d.log" % (constants.LOG_OS_DIR, instance.os,
|
764 | a8083063 | Iustin Pop | instance.name, int(time.time()))
|
765 | decd5f45 | Iustin Pop | |
766 | d868edb4 | Iustin Pop | result = utils.RunCmd([inst_os.create_script], env=create_env, |
767 | d868edb4 | Iustin Pop | cwd=inst_os.path, output=logfile,) |
768 | decd5f45 | Iustin Pop | if result.failed:
|
769 | 18682bca | Iustin Pop | logging.error("os create command '%s' returned error: %s, logfile: %s,"
|
770 | d868edb4 | Iustin Pop | " output: %s", result.cmd, result.fail_reason, logfile,
|
771 | 18682bca | Iustin Pop | result.output) |
772 | 26f15862 | Iustin Pop | lines = [utils.SafeEncode(val) |
773 | 20e01edd | Iustin Pop | for val in utils.TailFile(logfile, lines=20)] |
774 | afdc3985 | Iustin Pop | _Fail("OS create script failed (%s), last lines in the"
|
775 | afdc3985 | Iustin Pop | " log file:\n%s", result.fail_reason, "\n".join(lines), log=False) |
776 | decd5f45 | Iustin Pop | |
777 | decd5f45 | Iustin Pop | |
778 | d15a9ad3 | Guido Trotter | def RunRenameInstance(instance, old_name): |
779 | decd5f45 | Iustin Pop | """Run the OS rename script for an instance.
|
780 | decd5f45 | Iustin Pop |
|
781 | b1206984 | Iustin Pop | @type instance: L{objects.Instance}
|
782 | d15a9ad3 | Guido Trotter | @param instance: Instance whose OS is to be installed
|
783 | d15a9ad3 | Guido Trotter | @type old_name: string
|
784 | d15a9ad3 | Guido Trotter | @param old_name: previous instance name
|
785 | 10c2650b | Iustin Pop | @rtype: boolean
|
786 | 10c2650b | Iustin Pop | @return: the success of the operation
|
787 | decd5f45 | Iustin Pop |
|
788 | decd5f45 | Iustin Pop | """
|
789 | decd5f45 | Iustin Pop | inst_os = OSFromDisk(instance.os) |
790 | decd5f45 | Iustin Pop | |
791 | d1a7d66f | Guido Trotter | rename_env = OSEnvironment(instance, inst_os) |
792 | ff38b6c0 | Guido Trotter | rename_env['OLD_INSTANCE_NAME'] = old_name
|
793 | decd5f45 | Iustin Pop | |
794 | decd5f45 | Iustin Pop | logfile = "%s/rename-%s-%s-%s-%d.log" % (constants.LOG_OS_DIR, instance.os,
|
795 | decd5f45 | Iustin Pop | old_name, |
796 | decd5f45 | Iustin Pop | instance.name, int(time.time()))
|
797 | a8083063 | Iustin Pop | |
798 | d868edb4 | Iustin Pop | result = utils.RunCmd([inst_os.rename_script], env=rename_env, |
799 | d868edb4 | Iustin Pop | cwd=inst_os.path, output=logfile) |
800 | a8083063 | Iustin Pop | |
801 | a8083063 | Iustin Pop | if result.failed:
|
802 | 18682bca | Iustin Pop | logging.error("os create command '%s' returned error: %s output: %s",
|
803 | d868edb4 | Iustin Pop | result.cmd, result.fail_reason, result.output) |
804 | 26f15862 | Iustin Pop | lines = [utils.SafeEncode(val) |
805 | 96841384 | Iustin Pop | for val in utils.TailFile(logfile, lines=20)] |
806 | afdc3985 | Iustin Pop | _Fail("OS rename script failed (%s), last lines in the"
|
807 | afdc3985 | Iustin Pop | " log file:\n%s", result.fail_reason, "\n".join(lines), log=False) |
808 | a8083063 | Iustin Pop | |
809 | a8083063 | Iustin Pop | |
810 | a8083063 | Iustin Pop | def _GetVGInfo(vg_name): |
811 | 5bbd3f7f | Michael Hanselmann | """Get information about the volume group.
|
812 | a8083063 | Iustin Pop |
|
813 | 10c2650b | Iustin Pop | @type vg_name: str
|
814 | 10c2650b | Iustin Pop | @param vg_name: the volume group which we query
|
815 | 10c2650b | Iustin Pop | @rtype: dict
|
816 | 10c2650b | Iustin Pop | @return:
|
817 | 10c2650b | Iustin Pop | A dictionary with the following keys:
|
818 | 10c2650b | Iustin Pop | - C{vg_size} is the total size of the volume group in MiB
|
819 | 10c2650b | Iustin Pop | - C{vg_free} is the free size of the volume group in MiB
|
820 | 10c2650b | Iustin Pop | - C{pv_count} are the number of physical disks in that VG
|
821 | a8083063 | Iustin Pop |
|
822 | 10c2650b | Iustin Pop | If an error occurs during gathering of data, we return the same dict
|
823 | 10c2650b | Iustin Pop | with keys all set to None.
|
824 | f4d377e7 | Iustin Pop |
|
825 | a8083063 | Iustin Pop | """
|
826 | f4d377e7 | Iustin Pop | retdic = dict.fromkeys(["vg_size", "vg_free", "pv_count"]) |
827 | f4d377e7 | Iustin Pop | |
828 | a8083063 | Iustin Pop | retval = utils.RunCmd(["vgs", "-ovg_size,vg_free,pv_count", "--noheadings", |
829 | a8083063 | Iustin Pop | "--nosuffix", "--units=m", "--separator=:", vg_name]) |
830 | a8083063 | Iustin Pop | |
831 | a8083063 | Iustin Pop | if retval.failed:
|
832 | 18682bca | Iustin Pop | logging.error("volume group %s not present", vg_name)
|
833 | f4d377e7 | Iustin Pop | return retdic
|
834 | d87ae7d2 | Iustin Pop | valarr = retval.stdout.strip().rstrip(':').split(':') |
835 | f4d377e7 | Iustin Pop | if len(valarr) == 3: |
836 | f4d377e7 | Iustin Pop | try:
|
837 | f4d377e7 | Iustin Pop | retdic = { |
838 | f4d377e7 | Iustin Pop | "vg_size": int(round(float(valarr[0]), 0)), |
839 | f4d377e7 | Iustin Pop | "vg_free": int(round(float(valarr[1]), 0)), |
840 | f4d377e7 | Iustin Pop | "pv_count": int(valarr[2]), |
841 | f4d377e7 | Iustin Pop | } |
842 | f4d377e7 | Iustin Pop | except ValueError, err: |
843 | 29921401 | Iustin Pop | logging.exception("Fail to parse vgs output: %s", err)
|
844 | f4d377e7 | Iustin Pop | else:
|
845 | 18682bca | Iustin Pop | logging.error("vgs output has the wrong number of fields (expected"
|
846 | 18682bca | Iustin Pop | " three): %s", str(valarr)) |
847 | a8083063 | Iustin Pop | return retdic
|
848 | a8083063 | Iustin Pop | |
849 | a8083063 | Iustin Pop | |
850 | 5282084b | Iustin Pop | def _GetBlockDevSymlinkPath(instance_name, idx): |
851 | 5282084b | Iustin Pop | return os.path.join(constants.DISK_LINKS_DIR,
|
852 | 5282084b | Iustin Pop | "%s:%d" % (instance_name, idx))
|
853 | 5282084b | Iustin Pop | |
854 | 5282084b | Iustin Pop | |
855 | 5282084b | Iustin Pop | def _SymlinkBlockDev(instance_name, device_path, idx): |
856 | 9332fd8a | Iustin Pop | """Set up symlinks to a instance's block device.
|
857 | 9332fd8a | Iustin Pop |
|
858 | 9332fd8a | Iustin Pop | This is an auxiliary function run when an instance is start (on the primary
|
859 | 9332fd8a | Iustin Pop | node) or when an instance is migrated (on the target node).
|
860 | 9332fd8a | Iustin Pop |
|
861 | 9332fd8a | Iustin Pop |
|
862 | 5282084b | Iustin Pop | @param instance_name: the name of the target instance
|
863 | 5282084b | Iustin Pop | @param device_path: path of the physical block device, on the node
|
864 | 5282084b | Iustin Pop | @param idx: the disk index
|
865 | 5282084b | Iustin Pop | @return: absolute path to the disk's symlink
|
866 | 9332fd8a | Iustin Pop |
|
867 | 9332fd8a | Iustin Pop | """
|
868 | 5282084b | Iustin Pop | link_name = _GetBlockDevSymlinkPath(instance_name, idx) |
869 | 9332fd8a | Iustin Pop | try:
|
870 | 9332fd8a | Iustin Pop | os.symlink(device_path, link_name) |
871 | 5282084b | Iustin Pop | except OSError, err: |
872 | 5282084b | Iustin Pop | if err.errno == errno.EEXIST:
|
873 | 9332fd8a | Iustin Pop | if (not os.path.islink(link_name) or |
874 | 9332fd8a | Iustin Pop | os.readlink(link_name) != device_path): |
875 | 9332fd8a | Iustin Pop | os.remove(link_name) |
876 | 9332fd8a | Iustin Pop | os.symlink(device_path, link_name) |
877 | 9332fd8a | Iustin Pop | else:
|
878 | 9332fd8a | Iustin Pop | raise
|
879 | 9332fd8a | Iustin Pop | |
880 | 9332fd8a | Iustin Pop | return link_name
|
881 | 9332fd8a | Iustin Pop | |
882 | 9332fd8a | Iustin Pop | |
883 | 5282084b | Iustin Pop | def _RemoveBlockDevLinks(instance_name, disks): |
884 | 3c9c571d | Iustin Pop | """Remove the block device symlinks belonging to the given instance.
|
885 | 3c9c571d | Iustin Pop |
|
886 | 3c9c571d | Iustin Pop | """
|
887 | 29921401 | Iustin Pop | for idx, _ in enumerate(disks): |
888 | 5282084b | Iustin Pop | link_name = _GetBlockDevSymlinkPath(instance_name, idx) |
889 | 5282084b | Iustin Pop | if os.path.islink(link_name):
|
890 | 3c9c571d | Iustin Pop | try:
|
891 | 03dfa658 | Iustin Pop | os.remove(link_name) |
892 | 03dfa658 | Iustin Pop | except OSError: |
893 | 03dfa658 | Iustin Pop | logging.exception("Can't remove symlink '%s'", link_name)
|
894 | 3c9c571d | Iustin Pop | |
895 | 3c9c571d | Iustin Pop | |
896 | 9332fd8a | Iustin Pop | def _GatherAndLinkBlockDevs(instance): |
897 | a8083063 | Iustin Pop | """Set up an instance's block device(s).
|
898 | a8083063 | Iustin Pop |
|
899 | a8083063 | Iustin Pop | This is run on the primary node at instance startup. The block
|
900 | a8083063 | Iustin Pop | devices must be already assembled.
|
901 | a8083063 | Iustin Pop |
|
902 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
903 | 10c2650b | Iustin Pop | @param instance: the instance whose disks we shoul assemble
|
904 | 069cfbf1 | Iustin Pop | @rtype: list
|
905 | 069cfbf1 | Iustin Pop | @return: list of (disk_object, device_path)
|
906 | 10c2650b | Iustin Pop |
|
907 | a8083063 | Iustin Pop | """
|
908 | a8083063 | Iustin Pop | block_devices = [] |
909 | 9332fd8a | Iustin Pop | for idx, disk in enumerate(instance.disks): |
910 | a8083063 | Iustin Pop | device = _RecursiveFindBD(disk) |
911 | a8083063 | Iustin Pop | if device is None: |
912 | a8083063 | Iustin Pop | raise errors.BlockDeviceError("Block device '%s' is not set up." % |
913 | a8083063 | Iustin Pop | str(disk))
|
914 | a8083063 | Iustin Pop | device.Open() |
915 | 9332fd8a | Iustin Pop | try:
|
916 | 5282084b | Iustin Pop | link_name = _SymlinkBlockDev(instance.name, device.dev_path, idx) |
917 | 9332fd8a | Iustin Pop | except OSError, e: |
918 | 9332fd8a | Iustin Pop | raise errors.BlockDeviceError("Cannot create block device symlink: %s" % |
919 | 9332fd8a | Iustin Pop | e.strerror) |
920 | 9332fd8a | Iustin Pop | |
921 | 9332fd8a | Iustin Pop | block_devices.append((disk, link_name)) |
922 | 9332fd8a | Iustin Pop | |
923 | a8083063 | Iustin Pop | return block_devices
|
924 | a8083063 | Iustin Pop | |
925 | a8083063 | Iustin Pop | |
926 | 07813a9e | Iustin Pop | def StartInstance(instance): |
927 | a8083063 | Iustin Pop | """Start an instance.
|
928 | a8083063 | Iustin Pop |
|
929 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
930 | e69d05fd | Iustin Pop | @param instance: the instance object
|
931 | c26a6bd2 | Iustin Pop | @rtype: None
|
932 | a8083063 | Iustin Pop |
|
933 | 098c0958 | Michael Hanselmann | """
|
934 | e69d05fd | Iustin Pop | running_instances = GetInstanceList([instance.hypervisor]) |
935 | a8083063 | Iustin Pop | |
936 | a8083063 | Iustin Pop | if instance.name in running_instances: |
937 | c26a6bd2 | Iustin Pop | logging.info("Instance %s already running, not starting", instance.name)
|
938 | c26a6bd2 | Iustin Pop | return
|
939 | a8083063 | Iustin Pop | |
940 | a8083063 | Iustin Pop | try:
|
941 | ec596c24 | Iustin Pop | block_devices = _GatherAndLinkBlockDevs(instance) |
942 | ec596c24 | Iustin Pop | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
943 | 07813a9e | Iustin Pop | hyper.StartInstance(instance, block_devices) |
944 | ec596c24 | Iustin Pop | except errors.BlockDeviceError, err:
|
945 | 2cc6781a | Iustin Pop | _Fail("Block device error: %s", err, exc=True) |
946 | a8083063 | Iustin Pop | except errors.HypervisorError, err:
|
947 | 5282084b | Iustin Pop | _RemoveBlockDevLinks(instance.name, instance.disks) |
948 | 2cc6781a | Iustin Pop | _Fail("Hypervisor error: %s", err, exc=True) |
949 | a8083063 | Iustin Pop | |
950 | a8083063 | Iustin Pop | |
951 | 1fae010f | Iustin Pop | def InstanceShutdown(instance): |
952 | a8083063 | Iustin Pop | """Shut an instance down.
|
953 | a8083063 | Iustin Pop |
|
954 | 10c2650b | Iustin Pop | @note: this functions uses polling with a hardcoded timeout.
|
955 | 10c2650b | Iustin Pop |
|
956 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
957 | e69d05fd | Iustin Pop | @param instance: the instance object
|
958 | c26a6bd2 | Iustin Pop | @rtype: None
|
959 | a8083063 | Iustin Pop |
|
960 | 098c0958 | Michael Hanselmann | """
|
961 | e69d05fd | Iustin Pop | hv_name = instance.hypervisor |
962 | e69d05fd | Iustin Pop | running_instances = GetInstanceList([hv_name]) |
963 | c26a6bd2 | Iustin Pop | iname = instance.name |
964 | a8083063 | Iustin Pop | |
965 | c26a6bd2 | Iustin Pop | if iname not in running_instances: |
966 | c26a6bd2 | Iustin Pop | logging.info("Instance %s not running, doing nothing", iname)
|
967 | c26a6bd2 | Iustin Pop | return
|
968 | a8083063 | Iustin Pop | |
969 | e69d05fd | Iustin Pop | hyper = hypervisor.GetHypervisor(hv_name) |
970 | a8083063 | Iustin Pop | try:
|
971 | a8083063 | Iustin Pop | hyper.StopInstance(instance) |
972 | a8083063 | Iustin Pop | except errors.HypervisorError, err:
|
973 | c26a6bd2 | Iustin Pop | _Fail("Failed to stop instance %s: %s", iname, err)
|
974 | a8083063 | Iustin Pop | |
975 | a8083063 | Iustin Pop | # test every 10secs for 2min
|
976 | a8083063 | Iustin Pop | |
977 | a8083063 | Iustin Pop | time.sleep(1)
|
978 | 7c4d6c7b | Michael Hanselmann | for _ in range(11): |
979 | e69d05fd | Iustin Pop | if instance.name not in GetInstanceList([hv_name]): |
980 | a8083063 | Iustin Pop | break
|
981 | a8083063 | Iustin Pop | time.sleep(10)
|
982 | a8083063 | Iustin Pop | else:
|
983 | a8083063 | Iustin Pop | # the shutdown did not succeed
|
984 | c26a6bd2 | Iustin Pop | logging.error("Shutdown of '%s' unsuccessful, using destroy", iname)
|
985 | a8083063 | Iustin Pop | |
986 | a8083063 | Iustin Pop | try:
|
987 | a8083063 | Iustin Pop | hyper.StopInstance(instance, force=True)
|
988 | a8083063 | Iustin Pop | except errors.HypervisorError, err:
|
989 | c26a6bd2 | Iustin Pop | _Fail("Failed to force stop instance %s: %s", iname, err)
|
990 | a8083063 | Iustin Pop | |
991 | a8083063 | Iustin Pop | time.sleep(1)
|
992 | e69d05fd | Iustin Pop | if instance.name in GetInstanceList([hv_name]): |
993 | c26a6bd2 | Iustin Pop | _Fail("Could not shutdown instance %s even by destroy", iname)
|
994 | 3c9c571d | Iustin Pop | |
995 | c26a6bd2 | Iustin Pop | _RemoveBlockDevLinks(iname, instance.disks) |
996 | a8083063 | Iustin Pop | |
997 | a8083063 | Iustin Pop | |
998 | 07813a9e | Iustin Pop | def InstanceReboot(instance, reboot_type): |
999 | 007a2f3e | Alexander Schreiber | """Reboot an instance.
|
1000 | 007a2f3e | Alexander Schreiber |
|
1001 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
1002 | 10c2650b | Iustin Pop | @param instance: the instance object to reboot
|
1003 | 10c2650b | Iustin Pop | @type reboot_type: str
|
1004 | 10c2650b | Iustin Pop | @param reboot_type: the type of reboot, one the following
|
1005 | 10c2650b | Iustin Pop | constants:
|
1006 | 10c2650b | Iustin Pop | - L{constants.INSTANCE_REBOOT_SOFT}: only reboot the
|
1007 | 10c2650b | Iustin Pop | instance OS, do not recreate the VM
|
1008 | 10c2650b | Iustin Pop | - L{constants.INSTANCE_REBOOT_HARD}: tear down and
|
1009 | 10c2650b | Iustin Pop | restart the VM (at the hypervisor level)
|
1010 | 73e5a4f4 | Iustin Pop | - the other reboot type (L{constants.INSTANCE_REBOOT_FULL}) is
|
1011 | 73e5a4f4 | Iustin Pop | not accepted here, since that mode is handled differently, in
|
1012 | 73e5a4f4 | Iustin Pop | cmdlib, and translates into full stop and start of the
|
1013 | 73e5a4f4 | Iustin Pop | instance (instead of a call_instance_reboot RPC)
|
1014 | c26a6bd2 | Iustin Pop | @rtype: None
|
1015 | 007a2f3e | Alexander Schreiber |
|
1016 | 007a2f3e | Alexander Schreiber | """
|
1017 | e69d05fd | Iustin Pop | running_instances = GetInstanceList([instance.hypervisor]) |
1018 | 007a2f3e | Alexander Schreiber | |
1019 | 007a2f3e | Alexander Schreiber | if instance.name not in running_instances: |
1020 | 2cc6781a | Iustin Pop | _Fail("Cannot reboot instance %s that is not running", instance.name)
|
1021 | 007a2f3e | Alexander Schreiber | |
1022 | e69d05fd | Iustin Pop | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
1023 | 007a2f3e | Alexander Schreiber | if reboot_type == constants.INSTANCE_REBOOT_SOFT:
|
1024 | 007a2f3e | Alexander Schreiber | try:
|
1025 | 007a2f3e | Alexander Schreiber | hyper.RebootInstance(instance) |
1026 | 007a2f3e | Alexander Schreiber | except errors.HypervisorError, err:
|
1027 | 2cc6781a | Iustin Pop | _Fail("Failed to soft reboot instance %s: %s", instance.name, err)
|
1028 | 007a2f3e | Alexander Schreiber | elif reboot_type == constants.INSTANCE_REBOOT_HARD:
|
1029 | 007a2f3e | Alexander Schreiber | try:
|
1030 | c26a6bd2 | Iustin Pop | InstanceShutdown(instance) |
1031 | 07813a9e | Iustin Pop | return StartInstance(instance)
|
1032 | 007a2f3e | Alexander Schreiber | except errors.HypervisorError, err:
|
1033 | 2cc6781a | Iustin Pop | _Fail("Failed to hard reboot instance %s: %s", instance.name, err)
|
1034 | 007a2f3e | Alexander Schreiber | else:
|
1035 | 2cc6781a | Iustin Pop | _Fail("Invalid reboot_type received: %s", reboot_type)
|
1036 | 007a2f3e | Alexander Schreiber | |
1037 | 007a2f3e | Alexander Schreiber | |
1038 | 6906a9d8 | Guido Trotter | def MigrationInfo(instance): |
1039 | 6906a9d8 | Guido Trotter | """Gather information about an instance to be migrated.
|
1040 | 6906a9d8 | Guido Trotter |
|
1041 | 6906a9d8 | Guido Trotter | @type instance: L{objects.Instance}
|
1042 | 6906a9d8 | Guido Trotter | @param instance: the instance definition
|
1043 | 6906a9d8 | Guido Trotter |
|
1044 | 6906a9d8 | Guido Trotter | """
|
1045 | cd42d0ad | Guido Trotter | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
1046 | cd42d0ad | Guido Trotter | try:
|
1047 | cd42d0ad | Guido Trotter | info = hyper.MigrationInfo(instance) |
1048 | cd42d0ad | Guido Trotter | except errors.HypervisorError, err:
|
1049 | 2cc6781a | Iustin Pop | _Fail("Failed to fetch migration information: %s", err, exc=True) |
1050 | c26a6bd2 | Iustin Pop | return info
|
1051 | 6906a9d8 | Guido Trotter | |
1052 | 6906a9d8 | Guido Trotter | |
1053 | 6906a9d8 | Guido Trotter | def AcceptInstance(instance, info, target): |
1054 | 6906a9d8 | Guido Trotter | """Prepare the node to accept an instance.
|
1055 | 6906a9d8 | Guido Trotter |
|
1056 | 6906a9d8 | Guido Trotter | @type instance: L{objects.Instance}
|
1057 | 6906a9d8 | Guido Trotter | @param instance: the instance definition
|
1058 | 6906a9d8 | Guido Trotter | @type info: string/data (opaque)
|
1059 | 6906a9d8 | Guido Trotter | @param info: migration information, from the source node
|
1060 | 6906a9d8 | Guido Trotter | @type target: string
|
1061 | 6906a9d8 | Guido Trotter | @param target: target host (usually ip), on this node
|
1062 | 6906a9d8 | Guido Trotter |
|
1063 | 6906a9d8 | Guido Trotter | """
|
1064 | cd42d0ad | Guido Trotter | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
1065 | cd42d0ad | Guido Trotter | try:
|
1066 | cd42d0ad | Guido Trotter | hyper.AcceptInstance(instance, info, target) |
1067 | cd42d0ad | Guido Trotter | except errors.HypervisorError, err:
|
1068 | 2cc6781a | Iustin Pop | _Fail("Failed to accept instance: %s", err, exc=True) |
1069 | 6906a9d8 | Guido Trotter | |
1070 | 6906a9d8 | Guido Trotter | |
1071 | 6906a9d8 | Guido Trotter | def FinalizeMigration(instance, info, success): |
1072 | 6906a9d8 | Guido Trotter | """Finalize any preparation to accept an instance.
|
1073 | 6906a9d8 | Guido Trotter |
|
1074 | 6906a9d8 | Guido Trotter | @type instance: L{objects.Instance}
|
1075 | 6906a9d8 | Guido Trotter | @param instance: the instance definition
|
1076 | 6906a9d8 | Guido Trotter | @type info: string/data (opaque)
|
1077 | 6906a9d8 | Guido Trotter | @param info: migration information, from the source node
|
1078 | 6906a9d8 | Guido Trotter | @type success: boolean
|
1079 | 6906a9d8 | Guido Trotter | @param success: whether the migration was a success or a failure
|
1080 | 6906a9d8 | Guido Trotter |
|
1081 | 6906a9d8 | Guido Trotter | """
|
1082 | cd42d0ad | Guido Trotter | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
1083 | cd42d0ad | Guido Trotter | try:
|
1084 | cd42d0ad | Guido Trotter | hyper.FinalizeMigration(instance, info, success) |
1085 | cd42d0ad | Guido Trotter | except errors.HypervisorError, err:
|
1086 | 2cc6781a | Iustin Pop | _Fail("Failed to finalize migration: %s", err, exc=True) |
1087 | 6906a9d8 | Guido Trotter | |
1088 | 6906a9d8 | Guido Trotter | |
1089 | 2a10865c | Iustin Pop | def MigrateInstance(instance, target, live): |
1090 | 2a10865c | Iustin Pop | """Migrates an instance to another node.
|
1091 | 2a10865c | Iustin Pop |
|
1092 | b1206984 | Iustin Pop | @type instance: L{objects.Instance}
|
1093 | 9f0e6b37 | Iustin Pop | @param instance: the instance definition
|
1094 | 9f0e6b37 | Iustin Pop | @type target: string
|
1095 | 9f0e6b37 | Iustin Pop | @param target: the target node name
|
1096 | 9f0e6b37 | Iustin Pop | @type live: boolean
|
1097 | 9f0e6b37 | Iustin Pop | @param live: whether the migration should be done live or not (the
|
1098 | 9f0e6b37 | Iustin Pop | interpretation of this parameter is left to the hypervisor)
|
1099 | 9f0e6b37 | Iustin Pop | @rtype: tuple
|
1100 | 9f0e6b37 | Iustin Pop | @return: a tuple of (success, msg) where:
|
1101 | 9f0e6b37 | Iustin Pop | - succes is a boolean denoting the success/failure of the operation
|
1102 | 9f0e6b37 | Iustin Pop | - msg is a string with details in case of failure
|
1103 | 9f0e6b37 | Iustin Pop |
|
1104 | 2a10865c | Iustin Pop | """
|
1105 | 53c776b5 | Iustin Pop | hyper = hypervisor.GetHypervisor(instance.hypervisor) |
1106 | 2a10865c | Iustin Pop | |
1107 | 2a10865c | Iustin Pop | try:
|
1108 | 9f0e6b37 | Iustin Pop | hyper.MigrateInstance(instance.name, target, live) |
1109 | 2a10865c | Iustin Pop | except errors.HypervisorError, err:
|
1110 | 2cc6781a | Iustin Pop | _Fail("Failed to migrate instance: %s", err, exc=True) |
1111 | 2a10865c | Iustin Pop | |
1112 | 2a10865c | Iustin Pop | |
1113 | 821d1bd1 | Iustin Pop | def BlockdevCreate(disk, size, owner, on_primary, info): |
1114 | a8083063 | Iustin Pop | """Creates a block device for an instance.
|
1115 | a8083063 | Iustin Pop |
|
1116 | b1206984 | Iustin Pop | @type disk: L{objects.Disk}
|
1117 | b1206984 | Iustin Pop | @param disk: the object describing the disk we should create
|
1118 | b1206984 | Iustin Pop | @type size: int
|
1119 | b1206984 | Iustin Pop | @param size: the size of the physical underlying device, in MiB
|
1120 | b1206984 | Iustin Pop | @type owner: str
|
1121 | b1206984 | Iustin Pop | @param owner: the name of the instance for which disk is created,
|
1122 | b1206984 | Iustin Pop | used for device cache data
|
1123 | b1206984 | Iustin Pop | @type on_primary: boolean
|
1124 | b1206984 | Iustin Pop | @param on_primary: indicates if it is the primary node or not
|
1125 | b1206984 | Iustin Pop | @type info: string
|
1126 | b1206984 | Iustin Pop | @param info: string that will be sent to the physical device
|
1127 | b1206984 | Iustin Pop | creation, used for example to set (LVM) tags on LVs
|
1128 | b1206984 | Iustin Pop |
|
1129 | b1206984 | Iustin Pop | @return: the new unique_id of the device (this can sometime be
|
1130 | b1206984 | Iustin Pop | computed only after creation), or None. On secondary nodes,
|
1131 | b1206984 | Iustin Pop | it's not required to return anything.
|
1132 | a8083063 | Iustin Pop |
|
1133 | a8083063 | Iustin Pop | """
|
1134 | a8083063 | Iustin Pop | clist = [] |
1135 | a8083063 | Iustin Pop | if disk.children:
|
1136 | a8083063 | Iustin Pop | for child in disk.children: |
1137 | 1063abd1 | Iustin Pop | try:
|
1138 | 1063abd1 | Iustin Pop | crdev = _RecursiveAssembleBD(child, owner, on_primary) |
1139 | 1063abd1 | Iustin Pop | except errors.BlockDeviceError, err:
|
1140 | 2cc6781a | Iustin Pop | _Fail("Can't assemble device %s: %s", child, err)
|
1141 | a8083063 | Iustin Pop | if on_primary or disk.AssembleOnSecondary(): |
1142 | a8083063 | Iustin Pop | # we need the children open in case the device itself has to
|
1143 | a8083063 | Iustin Pop | # be assembled
|
1144 | 1063abd1 | Iustin Pop | try:
|
1145 | 1063abd1 | Iustin Pop | crdev.Open() |
1146 | 1063abd1 | Iustin Pop | except errors.BlockDeviceError, err:
|
1147 | 2cc6781a | Iustin Pop | _Fail("Can't make child '%s' read-write: %s", child, err)
|
1148 | a8083063 | Iustin Pop | clist.append(crdev) |
1149 | a8083063 | Iustin Pop | |
1150 | dab69e97 | Iustin Pop | try:
|
1151 | 464f8daf | Iustin Pop | device = bdev.Create(disk.dev_type, disk.physical_id, clist, disk.size) |
1152 | 1063abd1 | Iustin Pop | except errors.BlockDeviceError, err:
|
1153 | 2cc6781a | Iustin Pop | _Fail("Can't create block device: %s", err)
|
1154 | 6c626518 | Iustin Pop | |
1155 | a8083063 | Iustin Pop | if on_primary or disk.AssembleOnSecondary(): |
1156 | 1063abd1 | Iustin Pop | try:
|
1157 | 1063abd1 | Iustin Pop | device.Assemble() |
1158 | 1063abd1 | Iustin Pop | except errors.BlockDeviceError, err:
|
1159 | 2cc6781a | Iustin Pop | _Fail("Can't assemble device after creation, unusual event: %s", err)
|
1160 | e31c43f7 | Michael Hanselmann | device.SetSyncSpeed(constants.SYNC_SPEED) |
1161 | a8083063 | Iustin Pop | if on_primary or disk.OpenOnSecondary(): |
1162 | 1063abd1 | Iustin Pop | try:
|
1163 | 1063abd1 | Iustin Pop | device.Open(force=True)
|
1164 | 1063abd1 | Iustin Pop | except errors.BlockDeviceError, err:
|
1165 | 2cc6781a | Iustin Pop | _Fail("Can't make device r/w after creation, unusual event: %s", err)
|
1166 | 3f78eef2 | Iustin Pop | DevCacheManager.UpdateCache(device.dev_path, owner, |
1167 | 3f78eef2 | Iustin Pop | on_primary, disk.iv_name) |
1168 | a0c3fea1 | Michael Hanselmann | |
1169 | a0c3fea1 | Michael Hanselmann | device.SetInfo(info) |
1170 | a0c3fea1 | Michael Hanselmann | |
1171 | c26a6bd2 | Iustin Pop | return device.unique_id
|
1172 | a8083063 | Iustin Pop | |
1173 | a8083063 | Iustin Pop | |
1174 | 821d1bd1 | Iustin Pop | def BlockdevRemove(disk): |
1175 | a8083063 | Iustin Pop | """Remove a block device.
|
1176 | a8083063 | Iustin Pop |
|
1177 | 10c2650b | Iustin Pop | @note: This is intended to be called recursively.
|
1178 | 10c2650b | Iustin Pop |
|
1179 | c41eea6e | Iustin Pop | @type disk: L{objects.Disk}
|
1180 | 10c2650b | Iustin Pop | @param disk: the disk object we should remove
|
1181 | 10c2650b | Iustin Pop | @rtype: boolean
|
1182 | 10c2650b | Iustin Pop | @return: the success of the operation
|
1183 | a8083063 | Iustin Pop |
|
1184 | a8083063 | Iustin Pop | """
|
1185 | e1bc0878 | Iustin Pop | msgs = [] |
1186 | a8083063 | Iustin Pop | try:
|
1187 | bca2e7f4 | Iustin Pop | rdev = _RecursiveFindBD(disk) |
1188 | a8083063 | Iustin Pop | except errors.BlockDeviceError, err:
|
1189 | a8083063 | Iustin Pop | # probably can't attach
|
1190 | 18682bca | Iustin Pop | logging.info("Can't attach to device %s in remove", disk)
|
1191 | a8083063 | Iustin Pop | rdev = None
|
1192 | a8083063 | Iustin Pop | if rdev is not None: |
1193 | 3f78eef2 | Iustin Pop | r_path = rdev.dev_path |
1194 | e1bc0878 | Iustin Pop | try:
|
1195 | 0c6c04ec | Iustin Pop | rdev.Remove() |
1196 | e1bc0878 | Iustin Pop | except errors.BlockDeviceError, err:
|
1197 | e1bc0878 | Iustin Pop | msgs.append(str(err))
|
1198 | c26a6bd2 | Iustin Pop | if not msgs: |
1199 | 3f78eef2 | Iustin Pop | DevCacheManager.RemoveCache(r_path) |
1200 | e1bc0878 | Iustin Pop | |
1201 | a8083063 | Iustin Pop | if disk.children:
|
1202 | a8083063 | Iustin Pop | for child in disk.children: |
1203 | c26a6bd2 | Iustin Pop | try:
|
1204 | c26a6bd2 | Iustin Pop | BlockdevRemove(child) |
1205 | c26a6bd2 | Iustin Pop | except RPCFail, err:
|
1206 | c26a6bd2 | Iustin Pop | msgs.append(str(err))
|
1207 | e1bc0878 | Iustin Pop | |
1208 | c26a6bd2 | Iustin Pop | if msgs:
|
1209 | afdc3985 | Iustin Pop | _Fail("; ".join(msgs))
|
1210 | afdc3985 | Iustin Pop | |
1211 | a8083063 | Iustin Pop | |
1212 | 3f78eef2 | Iustin Pop | def _RecursiveAssembleBD(disk, owner, as_primary): |
1213 | a8083063 | Iustin Pop | """Activate a block device for an instance.
|
1214 | a8083063 | Iustin Pop |
|
1215 | a8083063 | Iustin Pop | This is run on the primary and secondary nodes for an instance.
|
1216 | a8083063 | Iustin Pop |
|
1217 | 10c2650b | Iustin Pop | @note: this function is called recursively.
|
1218 | a8083063 | Iustin Pop |
|
1219 | 10c2650b | Iustin Pop | @type disk: L{objects.Disk}
|
1220 | 10c2650b | Iustin Pop | @param disk: the disk we try to assemble
|
1221 | 10c2650b | Iustin Pop | @type owner: str
|
1222 | 10c2650b | Iustin Pop | @param owner: the name of the instance which owns the disk
|
1223 | 10c2650b | Iustin Pop | @type as_primary: boolean
|
1224 | 10c2650b | Iustin Pop | @param as_primary: if we should make the block device
|
1225 | 10c2650b | Iustin Pop | read/write
|
1226 | a8083063 | Iustin Pop |
|
1227 | 10c2650b | Iustin Pop | @return: the assembled device or None (in case no device
|
1228 | 10c2650b | Iustin Pop | was assembled)
|
1229 | 10c2650b | Iustin Pop | @raise errors.BlockDeviceError: in case there is an error
|
1230 | 10c2650b | Iustin Pop | during the activation of the children or the device
|
1231 | 10c2650b | Iustin Pop | itself
|
1232 | a8083063 | Iustin Pop |
|
1233 | a8083063 | Iustin Pop | """
|
1234 | a8083063 | Iustin Pop | children = [] |
1235 | a8083063 | Iustin Pop | if disk.children:
|
1236 | fc1dc9d7 | Iustin Pop | mcn = disk.ChildrenNeeded() |
1237 | fc1dc9d7 | Iustin Pop | if mcn == -1: |
1238 | fc1dc9d7 | Iustin Pop | mcn = 0 # max number of Nones allowed |
1239 | fc1dc9d7 | Iustin Pop | else:
|
1240 | fc1dc9d7 | Iustin Pop | mcn = len(disk.children) - mcn # max number of Nones |
1241 | a8083063 | Iustin Pop | for chld_disk in disk.children: |
1242 | fc1dc9d7 | Iustin Pop | try:
|
1243 | fc1dc9d7 | Iustin Pop | cdev = _RecursiveAssembleBD(chld_disk, owner, as_primary) |
1244 | fc1dc9d7 | Iustin Pop | except errors.BlockDeviceError, err:
|
1245 | 7803d4d3 | Iustin Pop | if children.count(None) >= mcn: |
1246 | fc1dc9d7 | Iustin Pop | raise
|
1247 | fc1dc9d7 | Iustin Pop | cdev = None
|
1248 | 1063abd1 | Iustin Pop | logging.error("Error in child activation (but continuing): %s",
|
1249 | 1063abd1 | Iustin Pop | str(err))
|
1250 | fc1dc9d7 | Iustin Pop | children.append(cdev) |
1251 | a8083063 | Iustin Pop | |
1252 | a8083063 | Iustin Pop | if as_primary or disk.AssembleOnSecondary(): |
1253 | 464f8daf | Iustin Pop | r_dev = bdev.Assemble(disk.dev_type, disk.physical_id, children, disk.size) |
1254 | e31c43f7 | Michael Hanselmann | r_dev.SetSyncSpeed(constants.SYNC_SPEED) |
1255 | a8083063 | Iustin Pop | result = r_dev |
1256 | a8083063 | Iustin Pop | if as_primary or disk.OpenOnSecondary(): |
1257 | a8083063 | Iustin Pop | r_dev.Open() |
1258 | 3f78eef2 | Iustin Pop | DevCacheManager.UpdateCache(r_dev.dev_path, owner, |
1259 | 3f78eef2 | Iustin Pop | as_primary, disk.iv_name) |
1260 | 3f78eef2 | Iustin Pop | |
1261 | a8083063 | Iustin Pop | else:
|
1262 | a8083063 | Iustin Pop | result = True
|
1263 | a8083063 | Iustin Pop | return result
|
1264 | a8083063 | Iustin Pop | |
1265 | a8083063 | Iustin Pop | |
1266 | 821d1bd1 | Iustin Pop | def BlockdevAssemble(disk, owner, as_primary): |
1267 | a8083063 | Iustin Pop | """Activate a block device for an instance.
|
1268 | a8083063 | Iustin Pop |
|
1269 | a8083063 | Iustin Pop | This is a wrapper over _RecursiveAssembleBD.
|
1270 | a8083063 | Iustin Pop |
|
1271 | b1206984 | Iustin Pop | @rtype: str or boolean
|
1272 | b1206984 | Iustin Pop | @return: a C{/dev/...} path for primary nodes, and
|
1273 | b1206984 | Iustin Pop | C{True} for secondary nodes
|
1274 | a8083063 | Iustin Pop |
|
1275 | a8083063 | Iustin Pop | """
|
1276 | 53c14ef1 | Iustin Pop | try:
|
1277 | 53c14ef1 | Iustin Pop | result = _RecursiveAssembleBD(disk, owner, as_primary) |
1278 | 53c14ef1 | Iustin Pop | if isinstance(result, bdev.BlockDev): |
1279 | 53c14ef1 | Iustin Pop | result = result.dev_path |
1280 | 53c14ef1 | Iustin Pop | except errors.BlockDeviceError, err:
|
1281 | afdc3985 | Iustin Pop | _Fail("Error while assembling disk: %s", err, exc=True) |
1282 | afdc3985 | Iustin Pop | |
1283 | c26a6bd2 | Iustin Pop | return result
|
1284 | a8083063 | Iustin Pop | |
1285 | a8083063 | Iustin Pop | |
1286 | 821d1bd1 | Iustin Pop | def BlockdevShutdown(disk): |
1287 | a8083063 | Iustin Pop | """Shut down a block device.
|
1288 | a8083063 | Iustin Pop |
|
1289 | 5bbd3f7f | Michael Hanselmann | First, if the device is assembled (Attach() is successful), then
|
1290 | c41eea6e | Iustin Pop | the device is shutdown. Then the children of the device are
|
1291 | c41eea6e | Iustin Pop | shutdown.
|
1292 | a8083063 | Iustin Pop |
|
1293 | a8083063 | Iustin Pop | This function is called recursively. Note that we don't cache the
|
1294 | a8083063 | Iustin Pop | children or such, as oppossed to assemble, shutdown of different
|
1295 | a8083063 | Iustin Pop | devices doesn't require that the upper device was active.
|
1296 | a8083063 | Iustin Pop |
|
1297 | 10c2650b | Iustin Pop | @type disk: L{objects.Disk}
|
1298 | 10c2650b | Iustin Pop | @param disk: the description of the disk we should
|
1299 | 10c2650b | Iustin Pop | shutdown
|
1300 | c26a6bd2 | Iustin Pop | @rtype: None
|
1301 | 10c2650b | Iustin Pop |
|
1302 | a8083063 | Iustin Pop | """
|
1303 | cacfd1fd | Iustin Pop | msgs = [] |
1304 | a8083063 | Iustin Pop | r_dev = _RecursiveFindBD(disk) |
1305 | a8083063 | Iustin Pop | if r_dev is not None: |
1306 | 3f78eef2 | Iustin Pop | r_path = r_dev.dev_path |
1307 | cacfd1fd | Iustin Pop | try:
|
1308 | 746f7476 | Iustin Pop | r_dev.Shutdown() |
1309 | 746f7476 | Iustin Pop | DevCacheManager.RemoveCache(r_path) |
1310 | cacfd1fd | Iustin Pop | except errors.BlockDeviceError, err:
|
1311 | cacfd1fd | Iustin Pop | msgs.append(str(err))
|
1312 | 746f7476 | Iustin Pop | |
1313 | a8083063 | Iustin Pop | if disk.children:
|
1314 | a8083063 | Iustin Pop | for child in disk.children: |
1315 | c26a6bd2 | Iustin Pop | try:
|
1316 | c26a6bd2 | Iustin Pop | BlockdevShutdown(child) |
1317 | c26a6bd2 | Iustin Pop | except RPCFail, err:
|
1318 | c26a6bd2 | Iustin Pop | msgs.append(str(err))
|
1319 | 746f7476 | Iustin Pop | |
1320 | c26a6bd2 | Iustin Pop | if msgs:
|
1321 | afdc3985 | Iustin Pop | _Fail("; ".join(msgs))
|
1322 | a8083063 | Iustin Pop | |
1323 | a8083063 | Iustin Pop | |
1324 | 821d1bd1 | Iustin Pop | def BlockdevAddchildren(parent_cdev, new_cdevs): |
1325 | 153d9724 | Iustin Pop | """Extend a mirrored block device.
|
1326 | a8083063 | Iustin Pop |
|
1327 | 10c2650b | Iustin Pop | @type parent_cdev: L{objects.Disk}
|
1328 | 10c2650b | Iustin Pop | @param parent_cdev: the disk to which we should add children
|
1329 | 10c2650b | Iustin Pop | @type new_cdevs: list of L{objects.Disk}
|
1330 | 10c2650b | Iustin Pop | @param new_cdevs: the list of children which we should add
|
1331 | c26a6bd2 | Iustin Pop | @rtype: None
|
1332 | 10c2650b | Iustin Pop |
|
1333 | a8083063 | Iustin Pop | """
|
1334 | bca2e7f4 | Iustin Pop | parent_bdev = _RecursiveFindBD(parent_cdev) |
1335 | 153d9724 | Iustin Pop | if parent_bdev is None: |
1336 | 2cc6781a | Iustin Pop | _Fail("Can't find parent device '%s' in add children", parent_cdev)
|
1337 | 153d9724 | Iustin Pop | new_bdevs = [_RecursiveFindBD(disk) for disk in new_cdevs] |
1338 | 153d9724 | Iustin Pop | if new_bdevs.count(None) > 0: |
1339 | 2cc6781a | Iustin Pop | _Fail("Can't find new device(s) to add: %s:%s", new_bdevs, new_cdevs)
|
1340 | 153d9724 | Iustin Pop | parent_bdev.AddChildren(new_bdevs) |
1341 | a8083063 | Iustin Pop | |
1342 | a8083063 | Iustin Pop | |
1343 | 821d1bd1 | Iustin Pop | def BlockdevRemovechildren(parent_cdev, new_cdevs): |
1344 | 153d9724 | Iustin Pop | """Shrink a mirrored block device.
|
1345 | a8083063 | Iustin Pop |
|
1346 | 10c2650b | Iustin Pop | @type parent_cdev: L{objects.Disk}
|
1347 | 10c2650b | Iustin Pop | @param parent_cdev: the disk from which we should remove children
|
1348 | 10c2650b | Iustin Pop | @type new_cdevs: list of L{objects.Disk}
|
1349 | 10c2650b | Iustin Pop | @param new_cdevs: the list of children which we should remove
|
1350 | c26a6bd2 | Iustin Pop | @rtype: None
|
1351 | 10c2650b | Iustin Pop |
|
1352 | a8083063 | Iustin Pop | """
|
1353 | 153d9724 | Iustin Pop | parent_bdev = _RecursiveFindBD(parent_cdev) |
1354 | 153d9724 | Iustin Pop | if parent_bdev is None: |
1355 | 2cc6781a | Iustin Pop | _Fail("Can't find parent device '%s' in remove children", parent_cdev)
|
1356 | e739bd57 | Iustin Pop | devs = [] |
1357 | e739bd57 | Iustin Pop | for disk in new_cdevs: |
1358 | e739bd57 | Iustin Pop | rpath = disk.StaticDevPath() |
1359 | e739bd57 | Iustin Pop | if rpath is None: |
1360 | e739bd57 | Iustin Pop | bd = _RecursiveFindBD(disk) |
1361 | e739bd57 | Iustin Pop | if bd is None: |
1362 | 2cc6781a | Iustin Pop | _Fail("Can't find device %s while removing children", disk)
|
1363 | e739bd57 | Iustin Pop | else:
|
1364 | e739bd57 | Iustin Pop | devs.append(bd.dev_path) |
1365 | e739bd57 | Iustin Pop | else:
|
1366 | e739bd57 | Iustin Pop | devs.append(rpath) |
1367 | e739bd57 | Iustin Pop | parent_bdev.RemoveChildren(devs) |
1368 | a8083063 | Iustin Pop | |
1369 | a8083063 | Iustin Pop | |
1370 | 821d1bd1 | Iustin Pop | def BlockdevGetmirrorstatus(disks): |
1371 | a8083063 | Iustin Pop | """Get the mirroring status of a list of devices.
|
1372 | a8083063 | Iustin Pop |
|
1373 | 10c2650b | Iustin Pop | @type disks: list of L{objects.Disk}
|
1374 | 10c2650b | Iustin Pop | @param disks: the list of disks which we should query
|
1375 | 10c2650b | Iustin Pop | @rtype: disk
|
1376 | 10c2650b | Iustin Pop | @return:
|
1377 | 10c2650b | Iustin Pop | a list of (mirror_done, estimated_time) tuples, which
|
1378 | c41eea6e | Iustin Pop | are the result of L{bdev.BlockDev.CombinedSyncStatus}
|
1379 | 10c2650b | Iustin Pop | @raise errors.BlockDeviceError: if any of the disks cannot be
|
1380 | 10c2650b | Iustin Pop | found
|
1381 | a8083063 | Iustin Pop |
|
1382 | a8083063 | Iustin Pop | """
|
1383 | a8083063 | Iustin Pop | stats = [] |
1384 | a8083063 | Iustin Pop | for dsk in disks: |
1385 | a8083063 | Iustin Pop | rbd = _RecursiveFindBD(dsk) |
1386 | a8083063 | Iustin Pop | if rbd is None: |
1387 | 3efa9051 | Iustin Pop | _Fail("Can't find device %s", dsk)
|
1388 | 96acbc09 | Michael Hanselmann | |
1389 | 36145b12 | Michael Hanselmann | stats.append(rbd.CombinedSyncStatus()) |
1390 | 96acbc09 | Michael Hanselmann | |
1391 | c26a6bd2 | Iustin Pop | return stats
|
1392 | a8083063 | Iustin Pop | |
1393 | a8083063 | Iustin Pop | |
1394 | bca2e7f4 | Iustin Pop | def _RecursiveFindBD(disk): |
1395 | a8083063 | Iustin Pop | """Check if a device is activated.
|
1396 | a8083063 | Iustin Pop |
|
1397 | 5bbd3f7f | Michael Hanselmann | If so, return information about the real device.
|
1398 | a8083063 | Iustin Pop |
|
1399 | 10c2650b | Iustin Pop | @type disk: L{objects.Disk}
|
1400 | 10c2650b | Iustin Pop | @param disk: the disk object we need to find
|
1401 | a8083063 | Iustin Pop |
|
1402 | 10c2650b | Iustin Pop | @return: None if the device can't be found,
|
1403 | 10c2650b | Iustin Pop | otherwise the device instance
|
1404 | a8083063 | Iustin Pop |
|
1405 | a8083063 | Iustin Pop | """
|
1406 | a8083063 | Iustin Pop | children = [] |
1407 | a8083063 | Iustin Pop | if disk.children:
|
1408 | a8083063 | Iustin Pop | for chdisk in disk.children: |
1409 | a8083063 | Iustin Pop | children.append(_RecursiveFindBD(chdisk)) |
1410 | a8083063 | Iustin Pop | |
1411 | 464f8daf | Iustin Pop | return bdev.FindDevice(disk.dev_type, disk.physical_id, children, disk.size)
|
1412 | a8083063 | Iustin Pop | |
1413 | a8083063 | Iustin Pop | |
1414 | 821d1bd1 | Iustin Pop | def BlockdevFind(disk): |
1415 | a8083063 | Iustin Pop | """Check if a device is activated.
|
1416 | a8083063 | Iustin Pop |
|
1417 | 5bbd3f7f | Michael Hanselmann | If it is, return information about the real device.
|
1418 | a8083063 | Iustin Pop |
|
1419 | 10c2650b | Iustin Pop | @type disk: L{objects.Disk}
|
1420 | 10c2650b | Iustin Pop | @param disk: the disk to find
|
1421 | 96acbc09 | Michael Hanselmann | @rtype: None or objects.BlockDevStatus
|
1422 | 96acbc09 | Michael Hanselmann | @return: None if the disk cannot be found, otherwise a the current
|
1423 | 96acbc09 | Michael Hanselmann | information
|
1424 | a8083063 | Iustin Pop |
|
1425 | a8083063 | Iustin Pop | """
|
1426 | 23829f6f | Iustin Pop | try:
|
1427 | 23829f6f | Iustin Pop | rbd = _RecursiveFindBD(disk) |
1428 | 23829f6f | Iustin Pop | except errors.BlockDeviceError, err:
|
1429 | 2cc6781a | Iustin Pop | _Fail("Failed to find device: %s", err, exc=True) |
1430 | 96acbc09 | Michael Hanselmann | |
1431 | a8083063 | Iustin Pop | if rbd is None: |
1432 | c26a6bd2 | Iustin Pop | return None |
1433 | 96acbc09 | Michael Hanselmann | |
1434 | 96acbc09 | Michael Hanselmann | return rbd.GetSyncStatus()
|
1435 | a8083063 | Iustin Pop | |
1436 | a8083063 | Iustin Pop | |
1437 | 968a7623 | Iustin Pop | def BlockdevGetsize(disks): |
1438 | 968a7623 | Iustin Pop | """Computes the size of the given disks.
|
1439 | 968a7623 | Iustin Pop |
|
1440 | 968a7623 | Iustin Pop | If a disk is not found, returns None instead.
|
1441 | 968a7623 | Iustin Pop |
|
1442 | 968a7623 | Iustin Pop | @type disks: list of L{objects.Disk}
|
1443 | 968a7623 | Iustin Pop | @param disks: the list of disk to compute the size for
|
1444 | 968a7623 | Iustin Pop | @rtype: list
|
1445 | 968a7623 | Iustin Pop | @return: list with elements None if the disk cannot be found,
|
1446 | 968a7623 | Iustin Pop | otherwise the size
|
1447 | 968a7623 | Iustin Pop |
|
1448 | 968a7623 | Iustin Pop | """
|
1449 | 968a7623 | Iustin Pop | result = [] |
1450 | 968a7623 | Iustin Pop | for cf in disks: |
1451 | 968a7623 | Iustin Pop | try:
|
1452 | 968a7623 | Iustin Pop | rbd = _RecursiveFindBD(cf) |
1453 | 968a7623 | Iustin Pop | except errors.BlockDeviceError, err:
|
1454 | 968a7623 | Iustin Pop | result.append(None)
|
1455 | 968a7623 | Iustin Pop | continue
|
1456 | 968a7623 | Iustin Pop | if rbd is None: |
1457 | 968a7623 | Iustin Pop | result.append(None)
|
1458 | 968a7623 | Iustin Pop | else:
|
1459 | 968a7623 | Iustin Pop | result.append(rbd.GetActualSize()) |
1460 | 968a7623 | Iustin Pop | return result
|
1461 | 968a7623 | Iustin Pop | |
1462 | 968a7623 | Iustin Pop | |
1463 | 858f3d18 | Iustin Pop | def BlockdevExport(disk, dest_node, dest_path, cluster_name): |
1464 | 858f3d18 | Iustin Pop | """Export a block device to a remote node.
|
1465 | 858f3d18 | Iustin Pop |
|
1466 | 858f3d18 | Iustin Pop | @type disk: L{objects.Disk}
|
1467 | 858f3d18 | Iustin Pop | @param disk: the description of the disk to export
|
1468 | 858f3d18 | Iustin Pop | @type dest_node: str
|
1469 | 858f3d18 | Iustin Pop | @param dest_node: the destination node to export to
|
1470 | 858f3d18 | Iustin Pop | @type dest_path: str
|
1471 | 858f3d18 | Iustin Pop | @param dest_path: the destination path on the target node
|
1472 | 858f3d18 | Iustin Pop | @type cluster_name: str
|
1473 | 858f3d18 | Iustin Pop | @param cluster_name: the cluster name, needed for SSH hostalias
|
1474 | 858f3d18 | Iustin Pop | @rtype: None
|
1475 | 858f3d18 | Iustin Pop |
|
1476 | 858f3d18 | Iustin Pop | """
|
1477 | 858f3d18 | Iustin Pop | real_disk = _RecursiveFindBD(disk) |
1478 | 858f3d18 | Iustin Pop | if real_disk is None: |
1479 | 858f3d18 | Iustin Pop | _Fail("Block device '%s' is not set up", disk)
|
1480 | 858f3d18 | Iustin Pop | |
1481 | 858f3d18 | Iustin Pop | real_disk.Open() |
1482 | 858f3d18 | Iustin Pop | |
1483 | 858f3d18 | Iustin Pop | # the block size on the read dd is 1MiB to match our units
|
1484 | 858f3d18 | Iustin Pop | expcmd = utils.BuildShellCmd("set -e; set -o pipefail; "
|
1485 | 858f3d18 | Iustin Pop | "dd if=%s bs=1048576 count=%s",
|
1486 | 858f3d18 | Iustin Pop | real_disk.dev_path, str(disk.size))
|
1487 | 858f3d18 | Iustin Pop | |
1488 | 858f3d18 | Iustin Pop | # we set here a smaller block size as, due to ssh buffering, more
|
1489 | 858f3d18 | Iustin Pop | # than 64-128k will mostly ignored; we use nocreat to fail if the
|
1490 | 858f3d18 | Iustin Pop | # device is not already there or we pass a wrong path; we use
|
1491 | 858f3d18 | Iustin Pop | # notrunc to no attempt truncate on an LV device; we use oflag=dsync
|
1492 | 858f3d18 | Iustin Pop | # to not buffer too much memory; this means that at best, we flush
|
1493 | 858f3d18 | Iustin Pop | # every 64k, which will not be very fast
|
1494 | 858f3d18 | Iustin Pop | destcmd = utils.BuildShellCmd("dd of=%s conv=nocreat,notrunc bs=65536"
|
1495 | 858f3d18 | Iustin Pop | " oflag=dsync", dest_path)
|
1496 | 858f3d18 | Iustin Pop | |
1497 | 858f3d18 | Iustin Pop | remotecmd = _GetSshRunner(cluster_name).BuildCmd(dest_node, |
1498 | 858f3d18 | Iustin Pop | constants.GANETI_RUNAS, |
1499 | 858f3d18 | Iustin Pop | destcmd) |
1500 | 858f3d18 | Iustin Pop | |
1501 | 858f3d18 | Iustin Pop | # all commands have been checked, so we're safe to combine them
|
1502 | 858f3d18 | Iustin Pop | command = '|'.join([expcmd, utils.ShellQuoteArgs(remotecmd)])
|
1503 | 858f3d18 | Iustin Pop | |
1504 | 858f3d18 | Iustin Pop | result = utils.RunCmd(["bash", "-c", command]) |
1505 | 858f3d18 | Iustin Pop | |
1506 | 858f3d18 | Iustin Pop | if result.failed:
|
1507 | 858f3d18 | Iustin Pop | _Fail("Disk copy command '%s' returned error: %s"
|
1508 | 858f3d18 | Iustin Pop | " output: %s", command, result.fail_reason, result.output)
|
1509 | 858f3d18 | Iustin Pop | |
1510 | 858f3d18 | Iustin Pop | |
1511 | a8083063 | Iustin Pop | def UploadFile(file_name, data, mode, uid, gid, atime, mtime): |
1512 | a8083063 | Iustin Pop | """Write a file to the filesystem.
|
1513 | a8083063 | Iustin Pop |
|
1514 | a8083063 | Iustin Pop | This allows the master to overwrite(!) a file. It will only perform
|
1515 | a8083063 | Iustin Pop | the operation if the file belongs to a list of configuration files.
|
1516 | a8083063 | Iustin Pop |
|
1517 | 10c2650b | Iustin Pop | @type file_name: str
|
1518 | 10c2650b | Iustin Pop | @param file_name: the target file name
|
1519 | 10c2650b | Iustin Pop | @type data: str
|
1520 | 10c2650b | Iustin Pop | @param data: the new contents of the file
|
1521 | 10c2650b | Iustin Pop | @type mode: int
|
1522 | 10c2650b | Iustin Pop | @param mode: the mode to give the file (can be None)
|
1523 | 10c2650b | Iustin Pop | @type uid: int
|
1524 | 10c2650b | Iustin Pop | @param uid: the owner of the file (can be -1 for default)
|
1525 | 10c2650b | Iustin Pop | @type gid: int
|
1526 | 10c2650b | Iustin Pop | @param gid: the group of the file (can be -1 for default)
|
1527 | 10c2650b | Iustin Pop | @type atime: float
|
1528 | 10c2650b | Iustin Pop | @param atime: the atime to set on the file (can be None)
|
1529 | 10c2650b | Iustin Pop | @type mtime: float
|
1530 | 10c2650b | Iustin Pop | @param mtime: the mtime to set on the file (can be None)
|
1531 | c26a6bd2 | Iustin Pop | @rtype: None
|
1532 | 10c2650b | Iustin Pop |
|
1533 | a8083063 | Iustin Pop | """
|
1534 | a8083063 | Iustin Pop | if not os.path.isabs(file_name): |
1535 | 2cc6781a | Iustin Pop | _Fail("Filename passed to UploadFile is not absolute: '%s'", file_name)
|
1536 | a8083063 | Iustin Pop | |
1537 | 360b0dc2 | Iustin Pop | if file_name not in _ALLOWED_UPLOAD_FILES: |
1538 | 2cc6781a | Iustin Pop | _Fail("Filename passed to UploadFile not in allowed upload targets: '%s'",
|
1539 | 2cc6781a | Iustin Pop | file_name) |
1540 | a8083063 | Iustin Pop | |
1541 | 12bce260 | Michael Hanselmann | raw_data = _Decompress(data) |
1542 | 12bce260 | Michael Hanselmann | |
1543 | 12bce260 | Michael Hanselmann | utils.WriteFile(file_name, data=raw_data, mode=mode, uid=uid, gid=gid, |
1544 | 41a57aab | Michael Hanselmann | atime=atime, mtime=mtime) |
1545 | a8083063 | Iustin Pop | |
1546 | 386b57af | Iustin Pop | |
1547 | 03d1dba2 | Michael Hanselmann | def WriteSsconfFiles(values): |
1548 | 89b14f05 | Iustin Pop | """Update all ssconf files.
|
1549 | 89b14f05 | Iustin Pop |
|
1550 | 89b14f05 | Iustin Pop | Wrapper around the SimpleStore.WriteFiles.
|
1551 | 89b14f05 | Iustin Pop |
|
1552 | 89b14f05 | Iustin Pop | """
|
1553 | 89b14f05 | Iustin Pop | ssconf.SimpleStore().WriteFiles(values) |
1554 | 6ddc95ec | Michael Hanselmann | |
1555 | 6ddc95ec | Michael Hanselmann | |
1556 | a8083063 | Iustin Pop | def _ErrnoOrStr(err): |
1557 | a8083063 | Iustin Pop | """Format an EnvironmentError exception.
|
1558 | a8083063 | Iustin Pop |
|
1559 | 10c2650b | Iustin Pop | If the L{err} argument has an errno attribute, it will be looked up
|
1560 | 10c2650b | Iustin Pop | and converted into a textual C{E...} description. Otherwise the
|
1561 | 10c2650b | Iustin Pop | string representation of the error will be returned.
|
1562 | 10c2650b | Iustin Pop |
|
1563 | 10c2650b | Iustin Pop | @type err: L{EnvironmentError}
|
1564 | 10c2650b | Iustin Pop | @param err: the exception to format
|
1565 | a8083063 | Iustin Pop |
|
1566 | a8083063 | Iustin Pop | """
|
1567 | a8083063 | Iustin Pop | if hasattr(err, 'errno'): |
1568 | a8083063 | Iustin Pop | detail = errno.errorcode[err.errno] |
1569 | a8083063 | Iustin Pop | else:
|
1570 | a8083063 | Iustin Pop | detail = str(err)
|
1571 | a8083063 | Iustin Pop | return detail
|
1572 | a8083063 | Iustin Pop | |
1573 | 5d0fe286 | Iustin Pop | |
1574 | 7ead9575 | Guido Trotter | def _OSOndiskAPIVersion(name, os_dir): |
1575 | 2f8598a5 | Alexander Schreiber | """Compute and return the API version of a given OS.
|
1576 | a8083063 | Iustin Pop |
|
1577 | 10c2650b | Iustin Pop | This function will try to read the API version of the OS given by
|
1578 | 7c3d51d4 | Guido Trotter | the 'name' parameter and residing in the 'os_dir' directory.
|
1579 | 7c3d51d4 | Guido Trotter |
|
1580 | 10c2650b | Iustin Pop | @type name: str
|
1581 | 10c2650b | Iustin Pop | @param name: the OS name we should look for
|
1582 | 10c2650b | Iustin Pop | @type os_dir: str
|
1583 | 10c2650b | Iustin Pop | @param os_dir: the directory inwhich we should look for the OS
|
1584 | 8e70b181 | Iustin Pop | @rtype: tuple
|
1585 | 8e70b181 | Iustin Pop | @return: tuple (status, data) with status denoting the validity and
|
1586 | 8e70b181 | Iustin Pop | data holding either the vaid versions or an error message
|
1587 | a8083063 | Iustin Pop |
|
1588 | a8083063 | Iustin Pop | """
|
1589 | a8083063 | Iustin Pop | api_file = os.path.sep.join([os_dir, "ganeti_api_version"])
|
1590 | a8083063 | Iustin Pop | |
1591 | a8083063 | Iustin Pop | try:
|
1592 | a8083063 | Iustin Pop | st = os.stat(api_file) |
1593 | a8083063 | Iustin Pop | except EnvironmentError, err: |
1594 | 255dcebd | Iustin Pop | return False, ("Required file 'ganeti_api_version' file not" |
1595 | 255dcebd | Iustin Pop | " found under path %s: %s" % (os_dir, _ErrnoOrStr(err)))
|
1596 | a8083063 | Iustin Pop | |
1597 | a8083063 | Iustin Pop | if not stat.S_ISREG(stat.S_IFMT(st.st_mode)): |
1598 | 255dcebd | Iustin Pop | return False, ("File 'ganeti_api_version' file at %s is not" |
1599 | 255dcebd | Iustin Pop | " a regular file" % os_dir)
|
1600 | a8083063 | Iustin Pop | |
1601 | a8083063 | Iustin Pop | try:
|
1602 | 3374afa9 | Guido Trotter | api_versions = utils.ReadFile(api_file).splitlines() |
1603 | a8083063 | Iustin Pop | except EnvironmentError, err: |
1604 | 255dcebd | Iustin Pop | return False, ("Error while reading the API version file at %s: %s" % |
1605 | 255dcebd | Iustin Pop | (api_file, _ErrnoOrStr(err))) |
1606 | a8083063 | Iustin Pop | |
1607 | a8083063 | Iustin Pop | try:
|
1608 | 63b9b186 | Guido Trotter | api_versions = [int(version.strip()) for version in api_versions] |
1609 | a8083063 | Iustin Pop | except (TypeError, ValueError), err: |
1610 | 255dcebd | Iustin Pop | return False, ("API version(s) can't be converted to integer: %s" % |
1611 | 255dcebd | Iustin Pop | str(err))
|
1612 | a8083063 | Iustin Pop | |
1613 | 255dcebd | Iustin Pop | return True, api_versions |
1614 | a8083063 | Iustin Pop | |
1615 | 386b57af | Iustin Pop | |
1616 | 7c3d51d4 | Guido Trotter | def DiagnoseOS(top_dirs=None): |
1617 | a8083063 | Iustin Pop | """Compute the validity for all OSes.
|
1618 | a8083063 | Iustin Pop |
|
1619 | 10c2650b | Iustin Pop | @type top_dirs: list
|
1620 | 10c2650b | Iustin Pop | @param top_dirs: the list of directories in which to
|
1621 | 10c2650b | Iustin Pop | search (if not given defaults to
|
1622 | 10c2650b | Iustin Pop | L{constants.OS_SEARCH_PATH})
|
1623 | 10c2650b | Iustin Pop | @rtype: list of L{objects.OS}
|
1624 | 255dcebd | Iustin Pop | @return: a list of tuples (name, path, status, diagnose)
|
1625 | 255dcebd | Iustin Pop | for all (potential) OSes under all search paths, where:
|
1626 | 255dcebd | Iustin Pop | - name is the (potential) OS name
|
1627 | 255dcebd | Iustin Pop | - path is the full path to the OS
|
1628 | 255dcebd | Iustin Pop | - status True/False is the validity of the OS
|
1629 | 255dcebd | Iustin Pop | - diagnose is the error message for an invalid OS, otherwise empty
|
1630 | a8083063 | Iustin Pop |
|
1631 | a8083063 | Iustin Pop | """
|
1632 | 7c3d51d4 | Guido Trotter | if top_dirs is None: |
1633 | 7c3d51d4 | Guido Trotter | top_dirs = constants.OS_SEARCH_PATH |
1634 | a8083063 | Iustin Pop | |
1635 | a8083063 | Iustin Pop | result = [] |
1636 | 65fe4693 | Iustin Pop | for dir_name in top_dirs: |
1637 | 65fe4693 | Iustin Pop | if os.path.isdir(dir_name):
|
1638 | 7c3d51d4 | Guido Trotter | try:
|
1639 | 65fe4693 | Iustin Pop | f_names = utils.ListVisibleFiles(dir_name) |
1640 | 7c3d51d4 | Guido Trotter | except EnvironmentError, err: |
1641 | 29921401 | Iustin Pop | logging.exception("Can't list the OS directory %s: %s", dir_name, err)
|
1642 | 7c3d51d4 | Guido Trotter | break
|
1643 | 7c3d51d4 | Guido Trotter | for name in f_names: |
1644 | 255dcebd | Iustin Pop | os_path = os.path.sep.join([dir_name, name]) |
1645 | 255dcebd | Iustin Pop | status, os_inst = _TryOSFromDisk(name, base_dir=dir_name) |
1646 | 255dcebd | Iustin Pop | if status:
|
1647 | 255dcebd | Iustin Pop | diagnose = ""
|
1648 | 255dcebd | Iustin Pop | else:
|
1649 | 255dcebd | Iustin Pop | diagnose = os_inst |
1650 | 255dcebd | Iustin Pop | result.append((name, os_path, status, diagnose)) |
1651 | a8083063 | Iustin Pop | |
1652 | c26a6bd2 | Iustin Pop | return result
|
1653 | a8083063 | Iustin Pop | |
1654 | a8083063 | Iustin Pop | |
1655 | 255dcebd | Iustin Pop | def _TryOSFromDisk(name, base_dir=None): |
1656 | a8083063 | Iustin Pop | """Create an OS instance from disk.
|
1657 | a8083063 | Iustin Pop |
|
1658 | a8083063 | Iustin Pop | This function will return an OS instance if the given name is a
|
1659 | 8e70b181 | Iustin Pop | valid OS name.
|
1660 | a8083063 | Iustin Pop |
|
1661 | 8ee4dc80 | Guido Trotter | @type base_dir: string
|
1662 | 8ee4dc80 | Guido Trotter | @keyword base_dir: Base directory containing OS installations.
|
1663 | 8ee4dc80 | Guido Trotter | Defaults to a search in all the OS_SEARCH_PATH dirs.
|
1664 | 255dcebd | Iustin Pop | @rtype: tuple
|
1665 | 255dcebd | Iustin Pop | @return: success and either the OS instance if we find a valid one,
|
1666 | 255dcebd | Iustin Pop | or error message
|
1667 | 7c3d51d4 | Guido Trotter |
|
1668 | a8083063 | Iustin Pop | """
|
1669 | 56bcd3f4 | Guido Trotter | if base_dir is None: |
1670 | 57c177af | Iustin Pop | os_dir = utils.FindFile(name, constants.OS_SEARCH_PATH, os.path.isdir) |
1671 | c34c0cfd | Iustin Pop | if os_dir is None: |
1672 | 255dcebd | Iustin Pop | return False, "Directory for OS %s not found in search path" % name |
1673 | c34c0cfd | Iustin Pop | else:
|
1674 | c34c0cfd | Iustin Pop | os_dir = os.path.sep.join([base_dir, name]) |
1675 | a8083063 | Iustin Pop | |
1676 | 7ead9575 | Guido Trotter | status, api_versions = _OSOndiskAPIVersion(name, os_dir) |
1677 | 255dcebd | Iustin Pop | if not status: |
1678 | 255dcebd | Iustin Pop | # push the error up
|
1679 | 255dcebd | Iustin Pop | return status, api_versions
|
1680 | a8083063 | Iustin Pop | |
1681 | d1a7d66f | Guido Trotter | if not constants.OS_API_VERSIONS.intersection(api_versions): |
1682 | 255dcebd | Iustin Pop | return False, ("API version mismatch for path '%s': found %s, want %s." % |
1683 | d1a7d66f | Guido Trotter | (os_dir, api_versions, constants.OS_API_VERSIONS)) |
1684 | a8083063 | Iustin Pop | |
1685 | a8083063 | Iustin Pop | # OS Scripts dictionary, we will populate it with the actual script names
|
1686 | 62dbbe7e | Guido Trotter | os_scripts = dict.fromkeys(constants.OS_SCRIPTS)
|
1687 | a8083063 | Iustin Pop | |
1688 | a8083063 | Iustin Pop | for script in os_scripts: |
1689 | a8083063 | Iustin Pop | os_scripts[script] = os.path.sep.join([os_dir, script]) |
1690 | a8083063 | Iustin Pop | |
1691 | a8083063 | Iustin Pop | try:
|
1692 | a8083063 | Iustin Pop | st = os.stat(os_scripts[script]) |
1693 | a8083063 | Iustin Pop | except EnvironmentError, err: |
1694 | 255dcebd | Iustin Pop | return False, ("Script '%s' under path '%s' is missing (%s)" % |
1695 | 255dcebd | Iustin Pop | (script, os_dir, _ErrnoOrStr(err))) |
1696 | a8083063 | Iustin Pop | |
1697 | a8083063 | Iustin Pop | if stat.S_IMODE(st.st_mode) & stat.S_IXUSR != stat.S_IXUSR:
|
1698 | 255dcebd | Iustin Pop | return False, ("Script '%s' under path '%s' is not executable" % |
1699 | 255dcebd | Iustin Pop | (script, os_dir)) |
1700 | a8083063 | Iustin Pop | |
1701 | a8083063 | Iustin Pop | if not stat.S_ISREG(stat.S_IFMT(st.st_mode)): |
1702 | 255dcebd | Iustin Pop | return False, ("Script '%s' under path '%s' is not a regular file" % |
1703 | 255dcebd | Iustin Pop | (script, os_dir)) |
1704 | 255dcebd | Iustin Pop | |
1705 | 8e70b181 | Iustin Pop | os_obj = objects.OS(name=name, path=os_dir, |
1706 | 255dcebd | Iustin Pop | create_script=os_scripts[constants.OS_SCRIPT_CREATE], |
1707 | 255dcebd | Iustin Pop | export_script=os_scripts[constants.OS_SCRIPT_EXPORT], |
1708 | 255dcebd | Iustin Pop | import_script=os_scripts[constants.OS_SCRIPT_IMPORT], |
1709 | 255dcebd | Iustin Pop | rename_script=os_scripts[constants.OS_SCRIPT_RENAME], |
1710 | 255dcebd | Iustin Pop | api_versions=api_versions) |
1711 | 255dcebd | Iustin Pop | return True, os_obj |
1712 | 255dcebd | Iustin Pop | |
1713 | 255dcebd | Iustin Pop | |
1714 | 255dcebd | Iustin Pop | def OSFromDisk(name, base_dir=None): |
1715 | 255dcebd | Iustin Pop | """Create an OS instance from disk.
|
1716 | 255dcebd | Iustin Pop |
|
1717 | 255dcebd | Iustin Pop | This function will return an OS instance if the given name is a
|
1718 | 255dcebd | Iustin Pop | valid OS name. Otherwise, it will raise an appropriate
|
1719 | 255dcebd | Iustin Pop | L{RPCFail} exception, detailing why this is not a valid OS.
|
1720 | 255dcebd | Iustin Pop |
|
1721 | 255dcebd | Iustin Pop | This is just a wrapper over L{_TryOSFromDisk}, which doesn't raise
|
1722 | 255dcebd | Iustin Pop | an exception but returns true/false status data.
|
1723 | 255dcebd | Iustin Pop |
|
1724 | 255dcebd | Iustin Pop | @type base_dir: string
|
1725 | 255dcebd | Iustin Pop | @keyword base_dir: Base directory containing OS installations.
|
1726 | 255dcebd | Iustin Pop | Defaults to a search in all the OS_SEARCH_PATH dirs.
|
1727 | 255dcebd | Iustin Pop | @rtype: L{objects.OS}
|
1728 | 255dcebd | Iustin Pop | @return: the OS instance if we find a valid one
|
1729 | 255dcebd | Iustin Pop | @raise RPCFail: if we don't find a valid OS
|
1730 | 255dcebd | Iustin Pop |
|
1731 | 255dcebd | Iustin Pop | """
|
1732 | 255dcebd | Iustin Pop | status, payload = _TryOSFromDisk(name, base_dir) |
1733 | 255dcebd | Iustin Pop | |
1734 | 255dcebd | Iustin Pop | if not status: |
1735 | 255dcebd | Iustin Pop | _Fail(payload) |
1736 | a8083063 | Iustin Pop | |
1737 | 255dcebd | Iustin Pop | return payload
|
1738 | a8083063 | Iustin Pop | |
1739 | a8083063 | Iustin Pop | |
1740 | d1a7d66f | Guido Trotter | def OSEnvironment(instance, os, debug=0): |
1741 | 2266edb2 | Guido Trotter | """Calculate the environment for an os script.
|
1742 | 2266edb2 | Guido Trotter |
|
1743 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
1744 | 2266edb2 | Guido Trotter | @param instance: target instance for the os script run
|
1745 | d1a7d66f | Guido Trotter | @type os: L{objects.OS}
|
1746 | d1a7d66f | Guido Trotter | @param os: operating system for which the environment is being built
|
1747 | 2266edb2 | Guido Trotter | @type debug: integer
|
1748 | 10c2650b | Iustin Pop | @param debug: debug level (0 or 1, for OS Api 10)
|
1749 | 2266edb2 | Guido Trotter | @rtype: dict
|
1750 | 2266edb2 | Guido Trotter | @return: dict of environment variables
|
1751 | 10c2650b | Iustin Pop | @raise errors.BlockDeviceError: if the block device
|
1752 | 10c2650b | Iustin Pop | cannot be found
|
1753 | 2266edb2 | Guido Trotter |
|
1754 | 2266edb2 | Guido Trotter | """
|
1755 | 2266edb2 | Guido Trotter | result = {} |
1756 | d1a7d66f | Guido Trotter | api_version = max(constants.OS_API_VERSIONS.intersection(os.api_versions))
|
1757 | d1a7d66f | Guido Trotter | result['OS_API_VERSION'] = '%d' % api_version |
1758 | 2266edb2 | Guido Trotter | result['INSTANCE_NAME'] = instance.name
|
1759 | 15552312 | Iustin Pop | result['INSTANCE_OS'] = instance.os
|
1760 | 2266edb2 | Guido Trotter | result['HYPERVISOR'] = instance.hypervisor
|
1761 | 2266edb2 | Guido Trotter | result['DISK_COUNT'] = '%d' % len(instance.disks) |
1762 | 2266edb2 | Guido Trotter | result['NIC_COUNT'] = '%d' % len(instance.nics) |
1763 | 2266edb2 | Guido Trotter | result['DEBUG_LEVEL'] = '%d' % debug |
1764 | 2266edb2 | Guido Trotter | for idx, disk in enumerate(instance.disks): |
1765 | 2266edb2 | Guido Trotter | real_disk = _RecursiveFindBD(disk) |
1766 | 2266edb2 | Guido Trotter | if real_disk is None: |
1767 | 2266edb2 | Guido Trotter | raise errors.BlockDeviceError("Block device '%s' is not set up" % |
1768 | 2266edb2 | Guido Trotter | str(disk))
|
1769 | 2266edb2 | Guido Trotter | real_disk.Open() |
1770 | 2266edb2 | Guido Trotter | result['DISK_%d_PATH' % idx] = real_disk.dev_path
|
1771 | 15552312 | Iustin Pop | result['DISK_%d_ACCESS' % idx] = disk.mode
|
1772 | 2266edb2 | Guido Trotter | if constants.HV_DISK_TYPE in instance.hvparams: |
1773 | 2266edb2 | Guido Trotter | result['DISK_%d_FRONTEND_TYPE' % idx] = \
|
1774 | 2266edb2 | Guido Trotter | instance.hvparams[constants.HV_DISK_TYPE] |
1775 | 2266edb2 | Guido Trotter | if disk.dev_type in constants.LDS_BLOCK: |
1776 | 2266edb2 | Guido Trotter | result['DISK_%d_BACKEND_TYPE' % idx] = 'block' |
1777 | 2266edb2 | Guido Trotter | elif disk.dev_type == constants.LD_FILE:
|
1778 | 2266edb2 | Guido Trotter | result['DISK_%d_BACKEND_TYPE' % idx] = \
|
1779 | 2266edb2 | Guido Trotter | 'file:%s' % disk.physical_id[0] |
1780 | 2266edb2 | Guido Trotter | for idx, nic in enumerate(instance.nics): |
1781 | 2266edb2 | Guido Trotter | result['NIC_%d_MAC' % idx] = nic.mac
|
1782 | 2266edb2 | Guido Trotter | if nic.ip:
|
1783 | 2266edb2 | Guido Trotter | result['NIC_%d_IP' % idx] = nic.ip
|
1784 | 1ba9227f | Guido Trotter | result['NIC_%d_MODE' % idx] = nic.nicparams[constants.NIC_MODE]
|
1785 | 1ba9227f | Guido Trotter | if nic.nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
|
1786 | 1ba9227f | Guido Trotter | result['NIC_%d_BRIDGE' % idx] = nic.nicparams[constants.NIC_LINK]
|
1787 | 1ba9227f | Guido Trotter | if nic.nicparams[constants.NIC_LINK]:
|
1788 | 1ba9227f | Guido Trotter | result['NIC_%d_LINK' % idx] = nic.nicparams[constants.NIC_LINK]
|
1789 | 2266edb2 | Guido Trotter | if constants.HV_NIC_TYPE in instance.hvparams: |
1790 | 2266edb2 | Guido Trotter | result['NIC_%d_FRONTEND_TYPE' % idx] = \
|
1791 | 2266edb2 | Guido Trotter | instance.hvparams[constants.HV_NIC_TYPE] |
1792 | 2266edb2 | Guido Trotter | |
1793 | 67fc3042 | Iustin Pop | for source, kind in [(instance.beparams, "BE"), (instance.hvparams, "HV")]: |
1794 | 67fc3042 | Iustin Pop | for key, value in source.items(): |
1795 | 030b218a | Iustin Pop | result["INSTANCE_%s_%s" % (kind, key)] = str(value) |
1796 | 67fc3042 | Iustin Pop | |
1797 | 2266edb2 | Guido Trotter | return result
|
1798 | a8083063 | Iustin Pop | |
1799 | 821d1bd1 | Iustin Pop | def BlockdevGrow(disk, amount): |
1800 | 594609c0 | Iustin Pop | """Grow a stack of block devices.
|
1801 | 594609c0 | Iustin Pop |
|
1802 | 594609c0 | Iustin Pop | This function is called recursively, with the childrens being the
|
1803 | 10c2650b | Iustin Pop | first ones to resize.
|
1804 | 594609c0 | Iustin Pop |
|
1805 | 10c2650b | Iustin Pop | @type disk: L{objects.Disk}
|
1806 | 10c2650b | Iustin Pop | @param disk: the disk to be grown
|
1807 | 10c2650b | Iustin Pop | @rtype: (status, result)
|
1808 | 10c2650b | Iustin Pop | @return: a tuple with the status of the operation
|
1809 | 10c2650b | Iustin Pop | (True/False), and the errors message if status
|
1810 | 10c2650b | Iustin Pop | is False
|
1811 | 594609c0 | Iustin Pop |
|
1812 | 594609c0 | Iustin Pop | """
|
1813 | 594609c0 | Iustin Pop | r_dev = _RecursiveFindBD(disk) |
1814 | 594609c0 | Iustin Pop | if r_dev is None: |
1815 | afdc3985 | Iustin Pop | _Fail("Cannot find block device %s", disk)
|
1816 | 594609c0 | Iustin Pop | |
1817 | 594609c0 | Iustin Pop | try:
|
1818 | 594609c0 | Iustin Pop | r_dev.Grow(amount) |
1819 | 594609c0 | Iustin Pop | except errors.BlockDeviceError, err:
|
1820 | 2cc6781a | Iustin Pop | _Fail("Failed to grow block device: %s", err, exc=True) |
1821 | 594609c0 | Iustin Pop | |
1822 | 594609c0 | Iustin Pop | |
1823 | 821d1bd1 | Iustin Pop | def BlockdevSnapshot(disk): |
1824 | a8083063 | Iustin Pop | """Create a snapshot copy of a block device.
|
1825 | a8083063 | Iustin Pop |
|
1826 | a8083063 | Iustin Pop | This function is called recursively, and the snapshot is actually created
|
1827 | a8083063 | Iustin Pop | just for the leaf lvm backend device.
|
1828 | a8083063 | Iustin Pop |
|
1829 | e9e9263d | Guido Trotter | @type disk: L{objects.Disk}
|
1830 | e9e9263d | Guido Trotter | @param disk: the disk to be snapshotted
|
1831 | e9e9263d | Guido Trotter | @rtype: string
|
1832 | e9e9263d | Guido Trotter | @return: snapshot disk path
|
1833 | a8083063 | Iustin Pop |
|
1834 | 098c0958 | Michael Hanselmann | """
|
1835 | a8083063 | Iustin Pop | if disk.children:
|
1836 | a8083063 | Iustin Pop | if len(disk.children) == 1: |
1837 | a8083063 | Iustin Pop | # only one child, let's recurse on it
|
1838 | 821d1bd1 | Iustin Pop | return BlockdevSnapshot(disk.children[0]) |
1839 | a8083063 | Iustin Pop | else:
|
1840 | a8083063 | Iustin Pop | # more than one child, choose one that matches
|
1841 | a8083063 | Iustin Pop | for child in disk.children: |
1842 | a8083063 | Iustin Pop | if child.size == disk.size:
|
1843 | a8083063 | Iustin Pop | # return implies breaking the loop
|
1844 | 821d1bd1 | Iustin Pop | return BlockdevSnapshot(child)
|
1845 | fe96220b | Iustin Pop | elif disk.dev_type == constants.LD_LV:
|
1846 | a8083063 | Iustin Pop | r_dev = _RecursiveFindBD(disk) |
1847 | a8083063 | Iustin Pop | if r_dev is not None: |
1848 | a8083063 | Iustin Pop | # let's stay on the safe side and ask for the full size, for now
|
1849 | c26a6bd2 | Iustin Pop | return r_dev.Snapshot(disk.size)
|
1850 | a8083063 | Iustin Pop | else:
|
1851 | 87812fd3 | Iustin Pop | _Fail("Cannot find block device %s", disk)
|
1852 | a8083063 | Iustin Pop | else:
|
1853 | 87812fd3 | Iustin Pop | _Fail("Cannot snapshot non-lvm block device '%s' of type '%s'",
|
1854 | 87812fd3 | Iustin Pop | disk.unique_id, disk.dev_type) |
1855 | a8083063 | Iustin Pop | |
1856 | a8083063 | Iustin Pop | |
1857 | 74c47259 | Iustin Pop | def ExportSnapshot(disk, dest_node, instance, cluster_name, idx): |
1858 | a8083063 | Iustin Pop | """Export a block device snapshot to a remote node.
|
1859 | a8083063 | Iustin Pop |
|
1860 | 74c47259 | Iustin Pop | @type disk: L{objects.Disk}
|
1861 | 74c47259 | Iustin Pop | @param disk: the description of the disk to export
|
1862 | 74c47259 | Iustin Pop | @type dest_node: str
|
1863 | 74c47259 | Iustin Pop | @param dest_node: the destination node to export to
|
1864 | 74c47259 | Iustin Pop | @type instance: L{objects.Instance}
|
1865 | 74c47259 | Iustin Pop | @param instance: the instance object to whom the disk belongs
|
1866 | 74c47259 | Iustin Pop | @type cluster_name: str
|
1867 | 74c47259 | Iustin Pop | @param cluster_name: the cluster name, needed for SSH hostalias
|
1868 | 74c47259 | Iustin Pop | @type idx: int
|
1869 | 74c47259 | Iustin Pop | @param idx: the index of the disk in the instance's disk list,
|
1870 | 74c47259 | Iustin Pop | used to export to the OS scripts environment
|
1871 | c26a6bd2 | Iustin Pop | @rtype: None
|
1872 | a8083063 | Iustin Pop |
|
1873 | 098c0958 | Michael Hanselmann | """
|
1874 | a8083063 | Iustin Pop | inst_os = OSFromDisk(instance.os) |
1875 | d1a7d66f | Guido Trotter | export_env = OSEnvironment(instance, inst_os) |
1876 | d1a7d66f | Guido Trotter | |
1877 | a8083063 | Iustin Pop | export_script = inst_os.export_script |
1878 | a8083063 | Iustin Pop | |
1879 | a8083063 | Iustin Pop | logfile = "%s/exp-%s-%s-%s.log" % (constants.LOG_OS_DIR, inst_os.name,
|
1880 | a8083063 | Iustin Pop | instance.name, int(time.time()))
|
1881 | a8083063 | Iustin Pop | if not os.path.exists(constants.LOG_OS_DIR): |
1882 | a8083063 | Iustin Pop | os.mkdir(constants.LOG_OS_DIR, 0750)
|
1883 | 0607699d | Guido Trotter | real_disk = _RecursiveFindBD(disk) |
1884 | 0607699d | Guido Trotter | if real_disk is None: |
1885 | ba55d062 | Iustin Pop | _Fail("Block device '%s' is not set up", disk)
|
1886 | ba55d062 | Iustin Pop | |
1887 | 0607699d | Guido Trotter | real_disk.Open() |
1888 | 0607699d | Guido Trotter | |
1889 | 0607699d | Guido Trotter | export_env['EXPORT_DEVICE'] = real_disk.dev_path
|
1890 | 74c47259 | Iustin Pop | export_env['EXPORT_INDEX'] = str(idx) |
1891 | a8083063 | Iustin Pop | |
1892 | a8083063 | Iustin Pop | destdir = os.path.join(constants.EXPORT_DIR, instance.name + ".new")
|
1893 | a8083063 | Iustin Pop | destfile = disk.physical_id[1]
|
1894 | a8083063 | Iustin Pop | |
1895 | a8083063 | Iustin Pop | # the target command is built out of three individual commands,
|
1896 | a8083063 | Iustin Pop | # which are joined by pipes; we check each individual command for
|
1897 | a8083063 | Iustin Pop | # valid parameters
|
1898 | a48b08bf | Iustin Pop | expcmd = utils.BuildShellCmd("set -e; set -o pipefail; cd %s; %s 2>%s",
|
1899 | a48b08bf | Iustin Pop | inst_os.path, export_script, logfile) |
1900 | a8083063 | Iustin Pop | |
1901 | a8083063 | Iustin Pop | comprcmd = "gzip"
|
1902 | a8083063 | Iustin Pop | |
1903 | 72f0f7fd | Iustin Pop | destcmd = utils.BuildShellCmd("mkdir -p %s && cat > %s/%s",
|
1904 | 00003458 | Guido Trotter | destdir, destdir, destfile) |
1905 | 62c9ec92 | Iustin Pop | remotecmd = _GetSshRunner(cluster_name).BuildCmd(dest_node, |
1906 | 62c9ec92 | Iustin Pop | constants.GANETI_RUNAS, |
1907 | 62c9ec92 | Iustin Pop | destcmd) |
1908 | a8083063 | Iustin Pop | |
1909 | a8083063 | Iustin Pop | # all commands have been checked, so we're safe to combine them
|
1910 | 72f0f7fd | Iustin Pop | command = '|'.join([expcmd, comprcmd, utils.ShellQuoteArgs(remotecmd)])
|
1911 | a8083063 | Iustin Pop | |
1912 | a48b08bf | Iustin Pop | result = utils.RunCmd(["bash", "-c", command], env=export_env) |
1913 | a8083063 | Iustin Pop | |
1914 | a8083063 | Iustin Pop | if result.failed:
|
1915 | ba55d062 | Iustin Pop | _Fail("OS snapshot export command '%s' returned error: %s"
|
1916 | ba55d062 | Iustin Pop | " output: %s", command, result.fail_reason, result.output)
|
1917 | a8083063 | Iustin Pop | |
1918 | a8083063 | Iustin Pop | |
1919 | a8083063 | Iustin Pop | def FinalizeExport(instance, snap_disks): |
1920 | a8083063 | Iustin Pop | """Write out the export configuration information.
|
1921 | a8083063 | Iustin Pop |
|
1922 | 10c2650b | Iustin Pop | @type instance: L{objects.Instance}
|
1923 | 10c2650b | Iustin Pop | @param instance: the instance which we export, used for
|
1924 | 10c2650b | Iustin Pop | saving configuration
|
1925 | 10c2650b | Iustin Pop | @type snap_disks: list of L{objects.Disk}
|
1926 | 10c2650b | Iustin Pop | @param snap_disks: list of snapshot block devices, which
|
1927 | 10c2650b | Iustin Pop | will be used to get the actual name of the dump file
|
1928 | a8083063 | Iustin Pop |
|
1929 | c26a6bd2 | Iustin Pop | @rtype: None
|
1930 | a8083063 | Iustin Pop |
|
1931 | 098c0958 | Michael Hanselmann | """
|
1932 | a8083063 | Iustin Pop | destdir = os.path.join(constants.EXPORT_DIR, instance.name + ".new")
|
1933 | a8083063 | Iustin Pop | finaldestdir = os.path.join(constants.EXPORT_DIR, instance.name) |
1934 | a8083063 | Iustin Pop | |
1935 | a8083063 | Iustin Pop | config = objects.SerializableConfigParser() |
1936 | a8083063 | Iustin Pop | |
1937 | a8083063 | Iustin Pop | config.add_section(constants.INISECT_EXP) |
1938 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'version', '0') |
1939 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'timestamp', '%d' % int(time.time())) |
1940 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'source', instance.primary_node)
|
1941 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'os', instance.os)
|
1942 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'compression', 'gzip') |
1943 | a8083063 | Iustin Pop | |
1944 | a8083063 | Iustin Pop | config.add_section(constants.INISECT_INS) |
1945 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'name', instance.name)
|
1946 | 51de46bf | Iustin Pop | config.set(constants.INISECT_INS, 'memory', '%d' % |
1947 | 51de46bf | Iustin Pop | instance.beparams[constants.BE_MEMORY]) |
1948 | 51de46bf | Iustin Pop | config.set(constants.INISECT_INS, 'vcpus', '%d' % |
1949 | 51de46bf | Iustin Pop | instance.beparams[constants.BE_VCPUS]) |
1950 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'disk_template', instance.disk_template)
|
1951 | 66f93869 | Manuel Franceschini | |
1952 | 95268cc3 | Iustin Pop | nic_total = 0
|
1953 | a8083063 | Iustin Pop | for nic_count, nic in enumerate(instance.nics): |
1954 | 95268cc3 | Iustin Pop | nic_total += 1
|
1955 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'nic%d_mac' %
|
1956 | a8083063 | Iustin Pop | nic_count, '%s' % nic.mac)
|
1957 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'nic%d_ip' % nic_count, '%s' % nic.ip) |
1958 | 38206f3c | Iustin Pop | config.set(constants.INISECT_INS, 'nic%d_bridge' % nic_count,
|
1959 | 38206f3c | Iustin Pop | '%s' % nic.bridge)
|
1960 | a8083063 | Iustin Pop | # TODO: redundant: on load can read nics until it doesn't exist
|
1961 | 95268cc3 | Iustin Pop | config.set(constants.INISECT_INS, 'nic_count' , '%d' % nic_total) |
1962 | a8083063 | Iustin Pop | |
1963 | 726d7d68 | Iustin Pop | disk_total = 0
|
1964 | a8083063 | Iustin Pop | for disk_count, disk in enumerate(snap_disks): |
1965 | 19d7f90a | Guido Trotter | if disk:
|
1966 | 726d7d68 | Iustin Pop | disk_total += 1
|
1967 | 19d7f90a | Guido Trotter | config.set(constants.INISECT_INS, 'disk%d_ivname' % disk_count,
|
1968 | 19d7f90a | Guido Trotter | ('%s' % disk.iv_name))
|
1969 | 19d7f90a | Guido Trotter | config.set(constants.INISECT_INS, 'disk%d_dump' % disk_count,
|
1970 | 19d7f90a | Guido Trotter | ('%s' % disk.physical_id[1])) |
1971 | 19d7f90a | Guido Trotter | config.set(constants.INISECT_INS, 'disk%d_size' % disk_count,
|
1972 | 19d7f90a | Guido Trotter | ('%d' % disk.size))
|
1973 | a8083063 | Iustin Pop | |
1974 | 726d7d68 | Iustin Pop | config.set(constants.INISECT_INS, 'disk_count' , '%d' % disk_total) |
1975 | a8083063 | Iustin Pop | |
1976 | 726d7d68 | Iustin Pop | utils.WriteFile(os.path.join(destdir, constants.EXPORT_CONF_FILE), |
1977 | 726d7d68 | Iustin Pop | data=config.Dumps()) |
1978 | a8083063 | Iustin Pop | shutil.rmtree(finaldestdir, True)
|
1979 | a8083063 | Iustin Pop | shutil.move(destdir, finaldestdir) |
1980 | a8083063 | Iustin Pop | |
1981 | a8083063 | Iustin Pop | |
1982 | a8083063 | Iustin Pop | def ExportInfo(dest): |
1983 | a8083063 | Iustin Pop | """Get export configuration information.
|
1984 | a8083063 | Iustin Pop |
|
1985 | 10c2650b | Iustin Pop | @type dest: str
|
1986 | 10c2650b | Iustin Pop | @param dest: directory containing the export
|
1987 | a8083063 | Iustin Pop |
|
1988 | 10c2650b | Iustin Pop | @rtype: L{objects.SerializableConfigParser}
|
1989 | 10c2650b | Iustin Pop | @return: a serializable config file containing the
|
1990 | 10c2650b | Iustin Pop | export info
|
1991 | a8083063 | Iustin Pop |
|
1992 | a8083063 | Iustin Pop | """
|
1993 | a8083063 | Iustin Pop | cff = os.path.join(dest, constants.EXPORT_CONF_FILE) |
1994 | a8083063 | Iustin Pop | |
1995 | a8083063 | Iustin Pop | config = objects.SerializableConfigParser() |
1996 | a8083063 | Iustin Pop | config.read(cff) |
1997 | a8083063 | Iustin Pop | |
1998 | a8083063 | Iustin Pop | if (not config.has_section(constants.INISECT_EXP) or |
1999 | a8083063 | Iustin Pop | not config.has_section(constants.INISECT_INS)):
|
2000 | 3eccac06 | Iustin Pop | _Fail("Export info file doesn't have the required fields")
|
2001 | a8083063 | Iustin Pop | |
2002 | c26a6bd2 | Iustin Pop | return config.Dumps()
|
2003 | a8083063 | Iustin Pop | |
2004 | a8083063 | Iustin Pop | |
2005 | 6c0af70e | Guido Trotter | def ImportOSIntoInstance(instance, src_node, src_images, cluster_name): |
2006 | a8083063 | Iustin Pop | """Import an os image into an instance.
|
2007 | a8083063 | Iustin Pop |
|
2008 | b1206984 | Iustin Pop | @type instance: L{objects.Instance}
|
2009 | 6c0af70e | Guido Trotter | @param instance: instance to import the disks into
|
2010 | 6c0af70e | Guido Trotter | @type src_node: string
|
2011 | 6c0af70e | Guido Trotter | @param src_node: source node for the disk images
|
2012 | 6c0af70e | Guido Trotter | @type src_images: list of string
|
2013 | 6c0af70e | Guido Trotter | @param src_images: absolute paths of the disk images
|
2014 | 6c0af70e | Guido Trotter | @rtype: list of boolean
|
2015 | 6c0af70e | Guido Trotter | @return: each boolean represent the success of importing the n-th disk
|
2016 | a8083063 | Iustin Pop |
|
2017 | a8083063 | Iustin Pop | """
|
2018 | a8083063 | Iustin Pop | inst_os = OSFromDisk(instance.os) |
2019 | d1a7d66f | Guido Trotter | import_env = OSEnvironment(instance, inst_os) |
2020 | a8083063 | Iustin Pop | import_script = inst_os.import_script |
2021 | a8083063 | Iustin Pop | |
2022 | a8083063 | Iustin Pop | logfile = "%s/import-%s-%s-%s.log" % (constants.LOG_OS_DIR, instance.os,
|
2023 | a8083063 | Iustin Pop | instance.name, int(time.time()))
|
2024 | a8083063 | Iustin Pop | if not os.path.exists(constants.LOG_OS_DIR): |
2025 | a8083063 | Iustin Pop | os.mkdir(constants.LOG_OS_DIR, 0750)
|
2026 | a8083063 | Iustin Pop | |
2027 | a8083063 | Iustin Pop | comprcmd = "gunzip"
|
2028 | d868edb4 | Iustin Pop | impcmd = utils.BuildShellCmd("(cd %s; %s >%s 2>&1)", inst_os.path,
|
2029 | d868edb4 | Iustin Pop | import_script, logfile) |
2030 | a8083063 | Iustin Pop | |
2031 | 6c0af70e | Guido Trotter | final_result = [] |
2032 | 6c0af70e | Guido Trotter | for idx, image in enumerate(src_images): |
2033 | 6c0af70e | Guido Trotter | if image:
|
2034 | 6c0af70e | Guido Trotter | destcmd = utils.BuildShellCmd('cat %s', image)
|
2035 | 6c0af70e | Guido Trotter | remotecmd = _GetSshRunner(cluster_name).BuildCmd(src_node, |
2036 | 6c0af70e | Guido Trotter | constants.GANETI_RUNAS, |
2037 | 6c0af70e | Guido Trotter | destcmd) |
2038 | 6c0af70e | Guido Trotter | command = '|'.join([utils.ShellQuoteArgs(remotecmd), comprcmd, impcmd])
|
2039 | 6c0af70e | Guido Trotter | import_env['IMPORT_DEVICE'] = import_env['DISK_%d_PATH' % idx] |
2040 | 74c47259 | Iustin Pop | import_env['IMPORT_INDEX'] = str(idx) |
2041 | 6c0af70e | Guido Trotter | result = utils.RunCmd(command, env=import_env) |
2042 | 6c0af70e | Guido Trotter | if result.failed:
|
2043 | 726d7d68 | Iustin Pop | logging.error("Disk import command '%s' returned error: %s"
|
2044 | 726d7d68 | Iustin Pop | " output: %s", command, result.fail_reason,
|
2045 | 726d7d68 | Iustin Pop | result.output) |
2046 | 944bf548 | Iustin Pop | final_result.append("error importing disk %d: %s, %s" %
|
2047 | 944bf548 | Iustin Pop | (idx, result.fail_reason, result.output[-100]))
|
2048 | a8083063 | Iustin Pop | |
2049 | 944bf548 | Iustin Pop | if final_result:
|
2050 | afdc3985 | Iustin Pop | _Fail("; ".join(final_result), log=False) |
2051 | a8083063 | Iustin Pop | |
2052 | a8083063 | Iustin Pop | |
2053 | a8083063 | Iustin Pop | def ListExports(): |
2054 | a8083063 | Iustin Pop | """Return a list of exports currently available on this machine.
|
2055 | 098c0958 | Michael Hanselmann |
|
2056 | 10c2650b | Iustin Pop | @rtype: list
|
2057 | 10c2650b | Iustin Pop | @return: list of the exports
|
2058 | 10c2650b | Iustin Pop |
|
2059 | a8083063 | Iustin Pop | """
|
2060 | a8083063 | Iustin Pop | if os.path.isdir(constants.EXPORT_DIR):
|
2061 | c26a6bd2 | Iustin Pop | return utils.ListVisibleFiles(constants.EXPORT_DIR)
|
2062 | a8083063 | Iustin Pop | else:
|
2063 | afdc3985 | Iustin Pop | _Fail("No exports directory")
|
2064 | a8083063 | Iustin Pop | |
2065 | a8083063 | Iustin Pop | |
2066 | a8083063 | Iustin Pop | def RemoveExport(export): |
2067 | a8083063 | Iustin Pop | """Remove an existing export from the node.
|
2068 | a8083063 | Iustin Pop |
|
2069 | 10c2650b | Iustin Pop | @type export: str
|
2070 | 10c2650b | Iustin Pop | @param export: the name of the export to remove
|
2071 | c26a6bd2 | Iustin Pop | @rtype: None
|
2072 | a8083063 | Iustin Pop |
|
2073 | 098c0958 | Michael Hanselmann | """
|
2074 | a8083063 | Iustin Pop | target = os.path.join(constants.EXPORT_DIR, export) |
2075 | a8083063 | Iustin Pop | |
2076 | 35fbcd11 | Iustin Pop | try:
|
2077 | 35fbcd11 | Iustin Pop | shutil.rmtree(target) |
2078 | 35fbcd11 | Iustin Pop | except EnvironmentError, err: |
2079 | 35fbcd11 | Iustin Pop | _Fail("Error while removing the export: %s", err, exc=True) |
2080 | a8083063 | Iustin Pop | |
2081 | a8083063 | Iustin Pop | |
2082 | 821d1bd1 | Iustin Pop | def BlockdevRename(devlist): |
2083 | f3e513ad | Iustin Pop | """Rename a list of block devices.
|
2084 | f3e513ad | Iustin Pop |
|
2085 | 10c2650b | Iustin Pop | @type devlist: list of tuples
|
2086 | 10c2650b | Iustin Pop | @param devlist: list of tuples of the form (disk,
|
2087 | 10c2650b | Iustin Pop | new_logical_id, new_physical_id); disk is an
|
2088 | 10c2650b | Iustin Pop | L{objects.Disk} object describing the current disk,
|
2089 | 10c2650b | Iustin Pop | and new logical_id/physical_id is the name we
|
2090 | 10c2650b | Iustin Pop | rename it to
|
2091 | 10c2650b | Iustin Pop | @rtype: boolean
|
2092 | 10c2650b | Iustin Pop | @return: True if all renames succeeded, False otherwise
|
2093 | f3e513ad | Iustin Pop |
|
2094 | f3e513ad | Iustin Pop | """
|
2095 | 6b5e3f70 | Iustin Pop | msgs = [] |
2096 | f3e513ad | Iustin Pop | result = True
|
2097 | f3e513ad | Iustin Pop | for disk, unique_id in devlist: |
2098 | f3e513ad | Iustin Pop | dev = _RecursiveFindBD(disk) |
2099 | f3e513ad | Iustin Pop | if dev is None: |
2100 | 6b5e3f70 | Iustin Pop | msgs.append("Can't find device %s in rename" % str(disk)) |
2101 | f3e513ad | Iustin Pop | result = False
|
2102 | f3e513ad | Iustin Pop | continue
|
2103 | f3e513ad | Iustin Pop | try:
|
2104 | 3f78eef2 | Iustin Pop | old_rpath = dev.dev_path |
2105 | f3e513ad | Iustin Pop | dev.Rename(unique_id) |
2106 | 3f78eef2 | Iustin Pop | new_rpath = dev.dev_path |
2107 | 3f78eef2 | Iustin Pop | if old_rpath != new_rpath:
|
2108 | 3f78eef2 | Iustin Pop | DevCacheManager.RemoveCache(old_rpath) |
2109 | 3f78eef2 | Iustin Pop | # FIXME: we should add the new cache information here, like:
|
2110 | 3f78eef2 | Iustin Pop | # DevCacheManager.UpdateCache(new_rpath, owner, ...)
|
2111 | 3f78eef2 | Iustin Pop | # but we don't have the owner here - maybe parse from existing
|
2112 | 3f78eef2 | Iustin Pop | # cache? for now, we only lose lvm data when we rename, which
|
2113 | 3f78eef2 | Iustin Pop | # is less critical than DRBD or MD
|
2114 | f3e513ad | Iustin Pop | except errors.BlockDeviceError, err:
|
2115 | 6b5e3f70 | Iustin Pop | msgs.append("Can't rename device '%s' to '%s': %s" %
|
2116 | 6b5e3f70 | Iustin Pop | (dev, unique_id, err)) |
2117 | 18682bca | Iustin Pop | logging.exception("Can't rename device '%s' to '%s'", dev, unique_id)
|
2118 | f3e513ad | Iustin Pop | result = False
|
2119 | afdc3985 | Iustin Pop | if not result: |
2120 | afdc3985 | Iustin Pop | _Fail("; ".join(msgs))
|
2121 | f3e513ad | Iustin Pop | |
2122 | f3e513ad | Iustin Pop | |
2123 | 778b75bb | Manuel Franceschini | def _TransformFileStorageDir(file_storage_dir): |
2124 | 778b75bb | Manuel Franceschini | """Checks whether given file_storage_dir is valid.
|
2125 | 778b75bb | Manuel Franceschini |
|
2126 | 778b75bb | Manuel Franceschini | Checks wheter the given file_storage_dir is within the cluster-wide
|
2127 | 778b75bb | Manuel Franceschini | default file_storage_dir stored in SimpleStore. Only paths under that
|
2128 | 778b75bb | Manuel Franceschini | directory are allowed.
|
2129 | 778b75bb | Manuel Franceschini |
|
2130 | b1206984 | Iustin Pop | @type file_storage_dir: str
|
2131 | b1206984 | Iustin Pop | @param file_storage_dir: the path to check
|
2132 | d61cbe76 | Iustin Pop |
|
2133 | b1206984 | Iustin Pop | @return: the normalized path if valid, None otherwise
|
2134 | 778b75bb | Manuel Franceschini |
|
2135 | 778b75bb | Manuel Franceschini | """
|
2136 | c657dcc9 | Michael Hanselmann | cfg = _GetConfig() |
2137 | 778b75bb | Manuel Franceschini | file_storage_dir = os.path.normpath(file_storage_dir) |
2138 | c657dcc9 | Michael Hanselmann | base_file_storage_dir = cfg.GetFileStorageDir() |
2139 | 778b75bb | Manuel Franceschini | if (not os.path.commonprefix([file_storage_dir, base_file_storage_dir]) == |
2140 | 778b75bb | Manuel Franceschini | base_file_storage_dir): |
2141 | b2b8bcce | Iustin Pop | _Fail("File storage directory '%s' is not under base file"
|
2142 | b2b8bcce | Iustin Pop | " storage directory '%s'", file_storage_dir, base_file_storage_dir)
|
2143 | 778b75bb | Manuel Franceschini | return file_storage_dir
|
2144 | 778b75bb | Manuel Franceschini | |
2145 | 778b75bb | Manuel Franceschini | |
2146 | 778b75bb | Manuel Franceschini | def CreateFileStorageDir(file_storage_dir): |
2147 | 778b75bb | Manuel Franceschini | """Create file storage directory.
|
2148 | 778b75bb | Manuel Franceschini |
|
2149 | b1206984 | Iustin Pop | @type file_storage_dir: str
|
2150 | b1206984 | Iustin Pop | @param file_storage_dir: directory to create
|
2151 | 778b75bb | Manuel Franceschini |
|
2152 | b1206984 | Iustin Pop | @rtype: tuple
|
2153 | b1206984 | Iustin Pop | @return: tuple with first element a boolean indicating wheter dir
|
2154 | b1206984 | Iustin Pop | creation was successful or not
|
2155 | 778b75bb | Manuel Franceschini |
|
2156 | 778b75bb | Manuel Franceschini | """
|
2157 | 778b75bb | Manuel Franceschini | file_storage_dir = _TransformFileStorageDir(file_storage_dir) |
2158 | b2b8bcce | Iustin Pop | if os.path.exists(file_storage_dir):
|
2159 | b2b8bcce | Iustin Pop | if not os.path.isdir(file_storage_dir): |
2160 | b2b8bcce | Iustin Pop | _Fail("Specified storage dir '%s' is not a directory",
|
2161 | b2b8bcce | Iustin Pop | file_storage_dir) |
2162 | 778b75bb | Manuel Franceschini | else:
|
2163 | b2b8bcce | Iustin Pop | try:
|
2164 | b2b8bcce | Iustin Pop | os.makedirs(file_storage_dir, 0750)
|
2165 | b2b8bcce | Iustin Pop | except OSError, err: |
2166 | b2b8bcce | Iustin Pop | _Fail("Cannot create file storage directory '%s': %s",
|
2167 | b2b8bcce | Iustin Pop | file_storage_dir, err, exc=True)
|
2168 | 778b75bb | Manuel Franceschini | |
2169 | 778b75bb | Manuel Franceschini | |
2170 | 778b75bb | Manuel Franceschini | def RemoveFileStorageDir(file_storage_dir): |
2171 | 778b75bb | Manuel Franceschini | """Remove file storage directory.
|
2172 | 778b75bb | Manuel Franceschini |
|
2173 | 778b75bb | Manuel Franceschini | Remove it only if it's empty. If not log an error and return.
|
2174 | 778b75bb | Manuel Franceschini |
|
2175 | 10c2650b | Iustin Pop | @type file_storage_dir: str
|
2176 | 10c2650b | Iustin Pop | @param file_storage_dir: the directory we should cleanup
|
2177 | 10c2650b | Iustin Pop | @rtype: tuple (success,)
|
2178 | 10c2650b | Iustin Pop | @return: tuple of one element, C{success}, denoting
|
2179 | 5bbd3f7f | Michael Hanselmann | whether the operation was successful
|
2180 | 778b75bb | Manuel Franceschini |
|
2181 | 778b75bb | Manuel Franceschini | """
|
2182 | 778b75bb | Manuel Franceschini | file_storage_dir = _TransformFileStorageDir(file_storage_dir) |
2183 | b2b8bcce | Iustin Pop | if os.path.exists(file_storage_dir):
|
2184 | b2b8bcce | Iustin Pop | if not os.path.isdir(file_storage_dir): |
2185 | b2b8bcce | Iustin Pop | _Fail("Specified Storage directory '%s' is not a directory",
|
2186 | b2b8bcce | Iustin Pop | file_storage_dir) |
2187 | afdc3985 | Iustin Pop | # deletes dir only if empty, otherwise we want to fail the rpc call
|
2188 | b2b8bcce | Iustin Pop | try:
|
2189 | b2b8bcce | Iustin Pop | os.rmdir(file_storage_dir) |
2190 | b2b8bcce | Iustin Pop | except OSError, err: |
2191 | b2b8bcce | Iustin Pop | _Fail("Cannot remove file storage directory '%s': %s",
|
2192 | b2b8bcce | Iustin Pop | file_storage_dir, err) |
2193 | b2b8bcce | Iustin Pop | |
2194 | 778b75bb | Manuel Franceschini | |
2195 | 778b75bb | Manuel Franceschini | def RenameFileStorageDir(old_file_storage_dir, new_file_storage_dir): |
2196 | 778b75bb | Manuel Franceschini | """Rename the file storage directory.
|
2197 | 778b75bb | Manuel Franceschini |
|
2198 | 10c2650b | Iustin Pop | @type old_file_storage_dir: str
|
2199 | 10c2650b | Iustin Pop | @param old_file_storage_dir: the current path
|
2200 | 10c2650b | Iustin Pop | @type new_file_storage_dir: str
|
2201 | 10c2650b | Iustin Pop | @param new_file_storage_dir: the name we should rename to
|
2202 | 10c2650b | Iustin Pop | @rtype: tuple (success,)
|
2203 | 10c2650b | Iustin Pop | @return: tuple of one element, C{success}, denoting
|
2204 | 10c2650b | Iustin Pop | whether the operation was successful
|
2205 | 778b75bb | Manuel Franceschini |
|
2206 | 778b75bb | Manuel Franceschini | """
|
2207 | 778b75bb | Manuel Franceschini | old_file_storage_dir = _TransformFileStorageDir(old_file_storage_dir) |
2208 | 778b75bb | Manuel Franceschini | new_file_storage_dir = _TransformFileStorageDir(new_file_storage_dir) |
2209 | b2b8bcce | Iustin Pop | if not os.path.exists(new_file_storage_dir): |
2210 | b2b8bcce | Iustin Pop | if os.path.isdir(old_file_storage_dir):
|
2211 | b2b8bcce | Iustin Pop | try:
|
2212 | b2b8bcce | Iustin Pop | os.rename(old_file_storage_dir, new_file_storage_dir) |
2213 | b2b8bcce | Iustin Pop | except OSError, err: |
2214 | b2b8bcce | Iustin Pop | _Fail("Cannot rename '%s' to '%s': %s",
|
2215 | b2b8bcce | Iustin Pop | old_file_storage_dir, new_file_storage_dir, err) |
2216 | 778b75bb | Manuel Franceschini | else:
|
2217 | b2b8bcce | Iustin Pop | _Fail("Specified storage dir '%s' is not a directory",
|
2218 | b2b8bcce | Iustin Pop | old_file_storage_dir) |
2219 | b2b8bcce | Iustin Pop | else:
|
2220 | b2b8bcce | Iustin Pop | if os.path.exists(old_file_storage_dir):
|
2221 | b2b8bcce | Iustin Pop | _Fail("Cannot rename '%s' to '%s': both locations exist",
|
2222 | b2b8bcce | Iustin Pop | old_file_storage_dir, new_file_storage_dir) |
2223 | 778b75bb | Manuel Franceschini | |
2224 | 778b75bb | Manuel Franceschini | |
2225 | c8457ce7 | Iustin Pop | def _EnsureJobQueueFile(file_name): |
2226 | dc31eae3 | Michael Hanselmann | """Checks whether the given filename is in the queue directory.
|
2227 | ca52cdeb | Michael Hanselmann |
|
2228 | 10c2650b | Iustin Pop | @type file_name: str
|
2229 | 10c2650b | Iustin Pop | @param file_name: the file name we should check
|
2230 | c8457ce7 | Iustin Pop | @rtype: None
|
2231 | c8457ce7 | Iustin Pop | @raises RPCFail: if the file is not valid
|
2232 | 10c2650b | Iustin Pop |
|
2233 | ca52cdeb | Michael Hanselmann | """
|
2234 | ca52cdeb | Michael Hanselmann | queue_dir = os.path.normpath(constants.QUEUE_DIR) |
2235 | dc31eae3 | Michael Hanselmann | result = (os.path.commonprefix([queue_dir, file_name]) == queue_dir) |
2236 | dc31eae3 | Michael Hanselmann | |
2237 | dc31eae3 | Michael Hanselmann | if not result: |
2238 | c8457ce7 | Iustin Pop | _Fail("Passed job queue file '%s' does not belong to"
|
2239 | c8457ce7 | Iustin Pop | " the queue directory '%s'", file_name, queue_dir)
|
2240 | dc31eae3 | Michael Hanselmann | |
2241 | dc31eae3 | Michael Hanselmann | |
2242 | dc31eae3 | Michael Hanselmann | def JobQueueUpdate(file_name, content): |
2243 | dc31eae3 | Michael Hanselmann | """Updates a file in the queue directory.
|
2244 | dc31eae3 | Michael Hanselmann |
|
2245 | 10c2650b | Iustin Pop | This is just a wrapper over L{utils.WriteFile}, with proper
|
2246 | 10c2650b | Iustin Pop | checking.
|
2247 | 10c2650b | Iustin Pop |
|
2248 | 10c2650b | Iustin Pop | @type file_name: str
|
2249 | 10c2650b | Iustin Pop | @param file_name: the job file name
|
2250 | 10c2650b | Iustin Pop | @type content: str
|
2251 | 10c2650b | Iustin Pop | @param content: the new job contents
|
2252 | 10c2650b | Iustin Pop | @rtype: boolean
|
2253 | 10c2650b | Iustin Pop | @return: the success of the operation
|
2254 | 10c2650b | Iustin Pop |
|
2255 | dc31eae3 | Michael Hanselmann | """
|
2256 | c8457ce7 | Iustin Pop | _EnsureJobQueueFile(file_name) |
2257 | ca52cdeb | Michael Hanselmann | |
2258 | ca52cdeb | Michael Hanselmann | # Write and replace the file atomically
|
2259 | 12bce260 | Michael Hanselmann | utils.WriteFile(file_name, data=_Decompress(content)) |
2260 | ca52cdeb | Michael Hanselmann | |
2261 | ca52cdeb | Michael Hanselmann | |
2262 | af5ebcb1 | Michael Hanselmann | def JobQueueRename(old, new): |
2263 | af5ebcb1 | Michael Hanselmann | """Renames a job queue file.
|
2264 | af5ebcb1 | Michael Hanselmann |
|
2265 | c41eea6e | Iustin Pop | This is just a wrapper over os.rename with proper checking.
|
2266 | 10c2650b | Iustin Pop |
|
2267 | 10c2650b | Iustin Pop | @type old: str
|
2268 | 10c2650b | Iustin Pop | @param old: the old (actual) file name
|
2269 | 10c2650b | Iustin Pop | @type new: str
|
2270 | 10c2650b | Iustin Pop | @param new: the desired file name
|
2271 | c8457ce7 | Iustin Pop | @rtype: tuple
|
2272 | c8457ce7 | Iustin Pop | @return: the success of the operation and payload
|
2273 | 10c2650b | Iustin Pop |
|
2274 | af5ebcb1 | Michael Hanselmann | """
|
2275 | c8457ce7 | Iustin Pop | _EnsureJobQueueFile(old) |
2276 | c8457ce7 | Iustin Pop | _EnsureJobQueueFile(new) |
2277 | af5ebcb1 | Michael Hanselmann | |
2278 | 58b22b6e | Michael Hanselmann | utils.RenameFile(old, new, mkdir=True)
|
2279 | af5ebcb1 | Michael Hanselmann | |
2280 | af5ebcb1 | Michael Hanselmann | |
2281 | 5d672980 | Iustin Pop | def JobQueueSetDrainFlag(drain_flag): |
2282 | 5d672980 | Iustin Pop | """Set the drain flag for the queue.
|
2283 | 5d672980 | Iustin Pop |
|
2284 | 5d672980 | Iustin Pop | This will set or unset the queue drain flag.
|
2285 | 5d672980 | Iustin Pop |
|
2286 | 10c2650b | Iustin Pop | @type drain_flag: boolean
|
2287 | 5d672980 | Iustin Pop | @param drain_flag: if True, will set the drain flag, otherwise reset it.
|
2288 | c8457ce7 | Iustin Pop | @rtype: truple
|
2289 | c8457ce7 | Iustin Pop | @return: always True, None
|
2290 | 10c2650b | Iustin Pop | @warning: the function always returns True
|
2291 | 5d672980 | Iustin Pop |
|
2292 | 5d672980 | Iustin Pop | """
|
2293 | 5d672980 | Iustin Pop | if drain_flag:
|
2294 | 5d672980 | Iustin Pop | utils.WriteFile(constants.JOB_QUEUE_DRAIN_FILE, data="", close=True) |
2295 | 5d672980 | Iustin Pop | else:
|
2296 | 5d672980 | Iustin Pop | utils.RemoveFile(constants.JOB_QUEUE_DRAIN_FILE) |
2297 | 5d672980 | Iustin Pop | |
2298 | 5d672980 | Iustin Pop | |
2299 | 821d1bd1 | Iustin Pop | def BlockdevClose(instance_name, disks): |
2300 | d61cbe76 | Iustin Pop | """Closes the given block devices.
|
2301 | d61cbe76 | Iustin Pop |
|
2302 | 10c2650b | Iustin Pop | This means they will be switched to secondary mode (in case of
|
2303 | 10c2650b | Iustin Pop | DRBD).
|
2304 | 10c2650b | Iustin Pop |
|
2305 | b2e7666a | Iustin Pop | @param instance_name: if the argument is not empty, the symlinks
|
2306 | b2e7666a | Iustin Pop | of this instance will be removed
|
2307 | 10c2650b | Iustin Pop | @type disks: list of L{objects.Disk}
|
2308 | 10c2650b | Iustin Pop | @param disks: the list of disks to be closed
|
2309 | 10c2650b | Iustin Pop | @rtype: tuple (success, message)
|
2310 | 10c2650b | Iustin Pop | @return: a tuple of success and message, where success
|
2311 | 10c2650b | Iustin Pop | indicates the succes of the operation, and message
|
2312 | 10c2650b | Iustin Pop | which will contain the error details in case we
|
2313 | 10c2650b | Iustin Pop | failed
|
2314 | d61cbe76 | Iustin Pop |
|
2315 | d61cbe76 | Iustin Pop | """
|
2316 | d61cbe76 | Iustin Pop | bdevs = [] |
2317 | d61cbe76 | Iustin Pop | for cf in disks: |
2318 | d61cbe76 | Iustin Pop | rd = _RecursiveFindBD(cf) |
2319 | d61cbe76 | Iustin Pop | if rd is None: |
2320 | 2cc6781a | Iustin Pop | _Fail("Can't find device %s", cf)
|
2321 | d61cbe76 | Iustin Pop | bdevs.append(rd) |
2322 | d61cbe76 | Iustin Pop | |
2323 | d61cbe76 | Iustin Pop | msg = [] |
2324 | d61cbe76 | Iustin Pop | for rd in bdevs: |
2325 | d61cbe76 | Iustin Pop | try:
|
2326 | d61cbe76 | Iustin Pop | rd.Close() |
2327 | d61cbe76 | Iustin Pop | except errors.BlockDeviceError, err:
|
2328 | d61cbe76 | Iustin Pop | msg.append(str(err))
|
2329 | d61cbe76 | Iustin Pop | if msg:
|
2330 | afdc3985 | Iustin Pop | _Fail("Can't make devices secondary: %s", ",".join(msg)) |
2331 | d61cbe76 | Iustin Pop | else:
|
2332 | b2e7666a | Iustin Pop | if instance_name:
|
2333 | 5282084b | Iustin Pop | _RemoveBlockDevLinks(instance_name, disks) |
2334 | d61cbe76 | Iustin Pop | |
2335 | d61cbe76 | Iustin Pop | |
2336 | 6217e295 | Iustin Pop | def ValidateHVParams(hvname, hvparams): |
2337 | 6217e295 | Iustin Pop | """Validates the given hypervisor parameters.
|
2338 | 6217e295 | Iustin Pop |
|
2339 | 6217e295 | Iustin Pop | @type hvname: string
|
2340 | 6217e295 | Iustin Pop | @param hvname: the hypervisor name
|
2341 | 6217e295 | Iustin Pop | @type hvparams: dict
|
2342 | 6217e295 | Iustin Pop | @param hvparams: the hypervisor parameters to be validated
|
2343 | c26a6bd2 | Iustin Pop | @rtype: None
|
2344 | 6217e295 | Iustin Pop |
|
2345 | 6217e295 | Iustin Pop | """
|
2346 | 6217e295 | Iustin Pop | try:
|
2347 | 6217e295 | Iustin Pop | hv_type = hypervisor.GetHypervisor(hvname) |
2348 | 6217e295 | Iustin Pop | hv_type.ValidateParameters(hvparams) |
2349 | 6217e295 | Iustin Pop | except errors.HypervisorError, err:
|
2350 | afdc3985 | Iustin Pop | _Fail(str(err), log=False) |
2351 | 6217e295 | Iustin Pop | |
2352 | 6217e295 | Iustin Pop | |
2353 | 56aa9fd5 | Iustin Pop | def DemoteFromMC(): |
2354 | 56aa9fd5 | Iustin Pop | """Demotes the current node from master candidate role.
|
2355 | 56aa9fd5 | Iustin Pop |
|
2356 | 56aa9fd5 | Iustin Pop | """
|
2357 | 56aa9fd5 | Iustin Pop | # try to ensure we're not the master by mistake
|
2358 | 56aa9fd5 | Iustin Pop | master, myself = ssconf.GetMasterAndMyself() |
2359 | 56aa9fd5 | Iustin Pop | if master == myself:
|
2360 | afdc3985 | Iustin Pop | _Fail("ssconf status shows I'm the master node, will not demote")
|
2361 | 83052f9e | Guido Trotter | pid_file = utils.DaemonPidFileName(constants.MASTERD) |
2362 | 56aa9fd5 | Iustin Pop | if utils.IsProcessAlive(utils.ReadPidFile(pid_file)):
|
2363 | afdc3985 | Iustin Pop | _Fail("The master daemon is running, will not demote")
|
2364 | 56aa9fd5 | Iustin Pop | try:
|
2365 | 9a5cb537 | Iustin Pop | if os.path.isfile(constants.CLUSTER_CONF_FILE):
|
2366 | 9a5cb537 | Iustin Pop | utils.CreateBackup(constants.CLUSTER_CONF_FILE) |
2367 | 56aa9fd5 | Iustin Pop | except EnvironmentError, err: |
2368 | 56aa9fd5 | Iustin Pop | if err.errno != errno.ENOENT:
|
2369 | afdc3985 | Iustin Pop | _Fail("Error while backing up cluster file: %s", err, exc=True) |
2370 | 56aa9fd5 | Iustin Pop | utils.RemoveFile(constants.CLUSTER_CONF_FILE) |
2371 | 56aa9fd5 | Iustin Pop | |
2372 | 56aa9fd5 | Iustin Pop | |
2373 | 6b93ec9d | Iustin Pop | def _FindDisks(nodes_ip, disks): |
2374 | 6b93ec9d | Iustin Pop | """Sets the physical ID on disks and returns the block devices.
|
2375 | 6b93ec9d | Iustin Pop |
|
2376 | 6b93ec9d | Iustin Pop | """
|
2377 | 6b93ec9d | Iustin Pop | # set the correct physical ID
|
2378 | 6b93ec9d | Iustin Pop | my_name = utils.HostInfo().name |
2379 | 6b93ec9d | Iustin Pop | for cf in disks: |
2380 | 6b93ec9d | Iustin Pop | cf.SetPhysicalID(my_name, nodes_ip) |
2381 | 6b93ec9d | Iustin Pop | |
2382 | 6b93ec9d | Iustin Pop | bdevs = [] |
2383 | 6b93ec9d | Iustin Pop | |
2384 | 6b93ec9d | Iustin Pop | for cf in disks: |
2385 | 6b93ec9d | Iustin Pop | rd = _RecursiveFindBD(cf) |
2386 | 6b93ec9d | Iustin Pop | if rd is None: |
2387 | 5a533f8a | Iustin Pop | _Fail("Can't find device %s", cf)
|
2388 | 6b93ec9d | Iustin Pop | bdevs.append(rd) |
2389 | 5a533f8a | Iustin Pop | return bdevs
|
2390 | 6b93ec9d | Iustin Pop | |
2391 | 6b93ec9d | Iustin Pop | |
2392 | 6b93ec9d | Iustin Pop | def DrbdDisconnectNet(nodes_ip, disks): |
2393 | 6b93ec9d | Iustin Pop | """Disconnects the network on a list of drbd devices.
|
2394 | 6b93ec9d | Iustin Pop |
|
2395 | 6b93ec9d | Iustin Pop | """
|
2396 | 5a533f8a | Iustin Pop | bdevs = _FindDisks(nodes_ip, disks) |
2397 | 6b93ec9d | Iustin Pop | |
2398 | 6b93ec9d | Iustin Pop | # disconnect disks
|
2399 | 6b93ec9d | Iustin Pop | for rd in bdevs: |
2400 | 6b93ec9d | Iustin Pop | try:
|
2401 | 6b93ec9d | Iustin Pop | rd.DisconnectNet() |
2402 | 6b93ec9d | Iustin Pop | except errors.BlockDeviceError, err:
|
2403 | 2cc6781a | Iustin Pop | _Fail("Can't change network configuration to standalone mode: %s",
|
2404 | 2cc6781a | Iustin Pop | err, exc=True)
|
2405 | 6b93ec9d | Iustin Pop | |
2406 | 6b93ec9d | Iustin Pop | |
2407 | 6b93ec9d | Iustin Pop | def DrbdAttachNet(nodes_ip, disks, instance_name, multimaster): |
2408 | 6b93ec9d | Iustin Pop | """Attaches the network on a list of drbd devices.
|
2409 | 6b93ec9d | Iustin Pop |
|
2410 | 6b93ec9d | Iustin Pop | """
|
2411 | 5a533f8a | Iustin Pop | bdevs = _FindDisks(nodes_ip, disks) |
2412 | 6b93ec9d | Iustin Pop | |
2413 | 6b93ec9d | Iustin Pop | if multimaster:
|
2414 | 53c776b5 | Iustin Pop | for idx, rd in enumerate(bdevs): |
2415 | 6b93ec9d | Iustin Pop | try:
|
2416 | 53c776b5 | Iustin Pop | _SymlinkBlockDev(instance_name, rd.dev_path, idx) |
2417 | 6b93ec9d | Iustin Pop | except EnvironmentError, err: |
2418 | 2cc6781a | Iustin Pop | _Fail("Can't create symlink: %s", err)
|
2419 | 6b93ec9d | Iustin Pop | # reconnect disks, switch to new master configuration and if
|
2420 | 6b93ec9d | Iustin Pop | # needed primary mode
|
2421 | 6b93ec9d | Iustin Pop | for rd in bdevs: |
2422 | 6b93ec9d | Iustin Pop | try:
|
2423 | 6b93ec9d | Iustin Pop | rd.AttachNet(multimaster) |
2424 | 6b93ec9d | Iustin Pop | except errors.BlockDeviceError, err:
|
2425 | 2cc6781a | Iustin Pop | _Fail("Can't change network configuration: %s", err)
|
2426 | 6b93ec9d | Iustin Pop | # wait until the disks are connected; we need to retry the re-attach
|
2427 | 6b93ec9d | Iustin Pop | # if the device becomes standalone, as this might happen if the one
|
2428 | 6b93ec9d | Iustin Pop | # node disconnects and reconnects in a different mode before the
|
2429 | 6b93ec9d | Iustin Pop | # other node reconnects; in this case, one or both of the nodes will
|
2430 | 6b93ec9d | Iustin Pop | # decide it has wrong configuration and switch to standalone
|
2431 | 6b93ec9d | Iustin Pop | RECONNECT_TIMEOUT = 2 * 60 |
2432 | 6b93ec9d | Iustin Pop | sleep_time = 0.100 # start with 100 miliseconds |
2433 | 6b93ec9d | Iustin Pop | timeout_limit = time.time() + RECONNECT_TIMEOUT |
2434 | 6b93ec9d | Iustin Pop | while time.time() < timeout_limit:
|
2435 | 6b93ec9d | Iustin Pop | all_connected = True
|
2436 | 6b93ec9d | Iustin Pop | for rd in bdevs: |
2437 | 6b93ec9d | Iustin Pop | stats = rd.GetProcStatus() |
2438 | 6b93ec9d | Iustin Pop | if not (stats.is_connected or stats.is_in_resync): |
2439 | 6b93ec9d | Iustin Pop | all_connected = False
|
2440 | 6b93ec9d | Iustin Pop | if stats.is_standalone:
|
2441 | 6b93ec9d | Iustin Pop | # peer had different config info and this node became
|
2442 | 6b93ec9d | Iustin Pop | # standalone, even though this should not happen with the
|
2443 | 6b93ec9d | Iustin Pop | # new staged way of changing disk configs
|
2444 | 6b93ec9d | Iustin Pop | try:
|
2445 | c738375b | Iustin Pop | rd.AttachNet(multimaster) |
2446 | 6b93ec9d | Iustin Pop | except errors.BlockDeviceError, err:
|
2447 | 2cc6781a | Iustin Pop | _Fail("Can't change network configuration: %s", err)
|
2448 | 6b93ec9d | Iustin Pop | if all_connected:
|
2449 | 6b93ec9d | Iustin Pop | break
|
2450 | 6b93ec9d | Iustin Pop | time.sleep(sleep_time) |
2451 | 6b93ec9d | Iustin Pop | sleep_time = min(5, sleep_time * 1.5) |
2452 | 6b93ec9d | Iustin Pop | if not all_connected: |
2453 | afdc3985 | Iustin Pop | _Fail("Timeout in disk reconnecting")
|
2454 | 6b93ec9d | Iustin Pop | if multimaster:
|
2455 | 6b93ec9d | Iustin Pop | # change to primary mode
|
2456 | 6b93ec9d | Iustin Pop | for rd in bdevs: |
2457 | d3da87b8 | Iustin Pop | try:
|
2458 | d3da87b8 | Iustin Pop | rd.Open() |
2459 | d3da87b8 | Iustin Pop | except errors.BlockDeviceError, err:
|
2460 | 2cc6781a | Iustin Pop | _Fail("Can't change to primary mode: %s", err)
|
2461 | 6b93ec9d | Iustin Pop | |
2462 | 6b93ec9d | Iustin Pop | |
2463 | 6b93ec9d | Iustin Pop | def DrbdWaitSync(nodes_ip, disks): |
2464 | 6b93ec9d | Iustin Pop | """Wait until DRBDs have synchronized.
|
2465 | 6b93ec9d | Iustin Pop |
|
2466 | 6b93ec9d | Iustin Pop | """
|
2467 | 5a533f8a | Iustin Pop | bdevs = _FindDisks(nodes_ip, disks) |
2468 | 6b93ec9d | Iustin Pop | |
2469 | 6b93ec9d | Iustin Pop | min_resync = 100
|
2470 | 6b93ec9d | Iustin Pop | alldone = True
|
2471 | 6b93ec9d | Iustin Pop | for rd in bdevs: |
2472 | 6b93ec9d | Iustin Pop | stats = rd.GetProcStatus() |
2473 | 6b93ec9d | Iustin Pop | if not (stats.is_connected or stats.is_in_resync): |
2474 | afdc3985 | Iustin Pop | _Fail("DRBD device %s is not in sync: stats=%s", rd, stats)
|
2475 | 6b93ec9d | Iustin Pop | alldone = alldone and (not stats.is_in_resync) |
2476 | 6b93ec9d | Iustin Pop | if stats.sync_percent is not None: |
2477 | 6b93ec9d | Iustin Pop | min_resync = min(min_resync, stats.sync_percent)
|
2478 | afdc3985 | Iustin Pop | |
2479 | c26a6bd2 | Iustin Pop | return (alldone, min_resync)
|
2480 | 6b93ec9d | Iustin Pop | |
2481 | 6b93ec9d | Iustin Pop | |
2482 | f5118ade | Iustin Pop | def PowercycleNode(hypervisor_type): |
2483 | f5118ade | Iustin Pop | """Hard-powercycle the node.
|
2484 | f5118ade | Iustin Pop |
|
2485 | f5118ade | Iustin Pop | Because we need to return first, and schedule the powercycle in the
|
2486 | f5118ade | Iustin Pop | background, we won't be able to report failures nicely.
|
2487 | f5118ade | Iustin Pop |
|
2488 | f5118ade | Iustin Pop | """
|
2489 | f5118ade | Iustin Pop | hyper = hypervisor.GetHypervisor(hypervisor_type) |
2490 | f5118ade | Iustin Pop | try:
|
2491 | f5118ade | Iustin Pop | pid = os.fork() |
2492 | 29921401 | Iustin Pop | except OSError: |
2493 | f5118ade | Iustin Pop | # if we can't fork, we'll pretend that we're in the child process
|
2494 | f5118ade | Iustin Pop | pid = 0
|
2495 | f5118ade | Iustin Pop | if pid > 0: |
2496 | c26a6bd2 | Iustin Pop | return "Reboot scheduled in 5 seconds" |
2497 | f5118ade | Iustin Pop | time.sleep(5)
|
2498 | f5118ade | Iustin Pop | hyper.PowercycleNode() |
2499 | f5118ade | Iustin Pop | |
2500 | f5118ade | Iustin Pop | |
2501 | a8083063 | Iustin Pop | class HooksRunner(object): |
2502 | a8083063 | Iustin Pop | """Hook runner.
|
2503 | a8083063 | Iustin Pop |
|
2504 | 10c2650b | Iustin Pop | This class is instantiated on the node side (ganeti-noded) and not
|
2505 | 10c2650b | Iustin Pop | on the master side.
|
2506 | a8083063 | Iustin Pop |
|
2507 | a8083063 | Iustin Pop | """
|
2508 | a8083063 | Iustin Pop | RE_MASK = re.compile("^[a-zA-Z0-9_-]+$")
|
2509 | a8083063 | Iustin Pop | |
2510 | a8083063 | Iustin Pop | def __init__(self, hooks_base_dir=None): |
2511 | a8083063 | Iustin Pop | """Constructor for hooks runner.
|
2512 | a8083063 | Iustin Pop |
|
2513 | 10c2650b | Iustin Pop | @type hooks_base_dir: str or None
|
2514 | 10c2650b | Iustin Pop | @param hooks_base_dir: if not None, this overrides the
|
2515 | 10c2650b | Iustin Pop | L{constants.HOOKS_BASE_DIR} (useful for unittests)
|
2516 | a8083063 | Iustin Pop |
|
2517 | a8083063 | Iustin Pop | """
|
2518 | a8083063 | Iustin Pop | if hooks_base_dir is None: |
2519 | a8083063 | Iustin Pop | hooks_base_dir = constants.HOOKS_BASE_DIR |
2520 | a8083063 | Iustin Pop | self._BASE_DIR = hooks_base_dir
|
2521 | a8083063 | Iustin Pop | |
2522 | a8083063 | Iustin Pop | @staticmethod
|
2523 | a8083063 | Iustin Pop | def ExecHook(script, env): |
2524 | a8083063 | Iustin Pop | """Exec one hook script.
|
2525 | a8083063 | Iustin Pop |
|
2526 | 10c2650b | Iustin Pop | @type script: str
|
2527 | 10c2650b | Iustin Pop | @param script: the full path to the script
|
2528 | 10c2650b | Iustin Pop | @type env: dict
|
2529 | 10c2650b | Iustin Pop | @param env: the environment with which to exec the script
|
2530 | 10c2650b | Iustin Pop | @rtype: tuple (success, message)
|
2531 | 10c2650b | Iustin Pop | @return: a tuple of success and message, where success
|
2532 | 10c2650b | Iustin Pop | indicates the succes of the operation, and message
|
2533 | 10c2650b | Iustin Pop | which will contain the error details in case we
|
2534 | 10c2650b | Iustin Pop | failed
|
2535 | a8083063 | Iustin Pop |
|
2536 | a8083063 | Iustin Pop | """
|
2537 | a8083063 | Iustin Pop | # exec the process using subprocess and log the output
|
2538 | a8083063 | Iustin Pop | fdstdin = None
|
2539 | a8083063 | Iustin Pop | try:
|
2540 | a8083063 | Iustin Pop | fdstdin = open("/dev/null", "r") |
2541 | a8083063 | Iustin Pop | child = subprocess.Popen([script], stdin=fdstdin, stdout=subprocess.PIPE, |
2542 | a8083063 | Iustin Pop | stderr=subprocess.STDOUT, close_fds=True,
|
2543 | 147af04d | Iustin Pop | shell=False, cwd="/", env=env) |
2544 | a8083063 | Iustin Pop | output = ""
|
2545 | a8083063 | Iustin Pop | try:
|
2546 | a8083063 | Iustin Pop | output = child.stdout.read(4096)
|
2547 | a8083063 | Iustin Pop | child.stdout.close() |
2548 | a8083063 | Iustin Pop | except EnvironmentError, err: |
2549 | a8083063 | Iustin Pop | output += "Hook script error: %s" % str(err) |
2550 | a8083063 | Iustin Pop | |
2551 | a8083063 | Iustin Pop | while True: |
2552 | a8083063 | Iustin Pop | try:
|
2553 | a8083063 | Iustin Pop | result = child.wait() |
2554 | a8083063 | Iustin Pop | break
|
2555 | a8083063 | Iustin Pop | except EnvironmentError, err: |
2556 | a8083063 | Iustin Pop | if err.errno == errno.EINTR:
|
2557 | a8083063 | Iustin Pop | continue
|
2558 | a8083063 | Iustin Pop | raise
|
2559 | a8083063 | Iustin Pop | finally:
|
2560 | a8083063 | Iustin Pop | # try not to leak fds
|
2561 | a8083063 | Iustin Pop | for fd in (fdstdin, ): |
2562 | a8083063 | Iustin Pop | if fd is not None: |
2563 | a8083063 | Iustin Pop | try:
|
2564 | a8083063 | Iustin Pop | fd.close() |
2565 | a8083063 | Iustin Pop | except EnvironmentError, err: |
2566 | a8083063 | Iustin Pop | # just log the error
|
2567 | 18682bca | Iustin Pop | #logging.exception("Error while closing fd %s", fd)
|
2568 | a8083063 | Iustin Pop | pass
|
2569 | a8083063 | Iustin Pop | |
2570 | 26f15862 | Iustin Pop | return result == 0, utils.SafeEncode(output.strip()) |
2571 | a8083063 | Iustin Pop | |
2572 | a8083063 | Iustin Pop | def RunHooks(self, hpath, phase, env): |
2573 | a8083063 | Iustin Pop | """Run the scripts in the hooks directory.
|
2574 | a8083063 | Iustin Pop |
|
2575 | 10c2650b | Iustin Pop | @type hpath: str
|
2576 | 10c2650b | Iustin Pop | @param hpath: the path to the hooks directory which
|
2577 | 10c2650b | Iustin Pop | holds the scripts
|
2578 | 10c2650b | Iustin Pop | @type phase: str
|
2579 | 10c2650b | Iustin Pop | @param phase: either L{constants.HOOKS_PHASE_PRE} or
|
2580 | 10c2650b | Iustin Pop | L{constants.HOOKS_PHASE_POST}
|
2581 | 10c2650b | Iustin Pop | @type env: dict
|
2582 | 10c2650b | Iustin Pop | @param env: dictionary with the environment for the hook
|
2583 | 10c2650b | Iustin Pop | @rtype: list
|
2584 | 10c2650b | Iustin Pop | @return: list of 3-element tuples:
|
2585 | 10c2650b | Iustin Pop | - script path
|
2586 | 10c2650b | Iustin Pop | - script result, either L{constants.HKR_SUCCESS} or
|
2587 | 10c2650b | Iustin Pop | L{constants.HKR_FAIL}
|
2588 | 10c2650b | Iustin Pop | - output of the script
|
2589 | 10c2650b | Iustin Pop |
|
2590 | 10c2650b | Iustin Pop | @raise errors.ProgrammerError: for invalid input
|
2591 | 10c2650b | Iustin Pop | parameters
|
2592 | a8083063 | Iustin Pop |
|
2593 | a8083063 | Iustin Pop | """
|
2594 | a8083063 | Iustin Pop | if phase == constants.HOOKS_PHASE_PRE:
|
2595 | a8083063 | Iustin Pop | suffix = "pre"
|
2596 | a8083063 | Iustin Pop | elif phase == constants.HOOKS_PHASE_POST:
|
2597 | a8083063 | Iustin Pop | suffix = "post"
|
2598 | a8083063 | Iustin Pop | else:
|
2599 | 3fb4f740 | Iustin Pop | _Fail("Unknown hooks phase '%s'", phase)
|
2600 | 3fb4f740 | Iustin Pop | |
2601 | a8083063 | Iustin Pop | rr = [] |
2602 | a8083063 | Iustin Pop | |
2603 | a8083063 | Iustin Pop | subdir = "%s-%s.d" % (hpath, suffix)
|
2604 | a8083063 | Iustin Pop | dir_name = "%s/%s" % (self._BASE_DIR, subdir) |
2605 | a8083063 | Iustin Pop | try:
|
2606 | eedbda4b | Michael Hanselmann | dir_contents = utils.ListVisibleFiles(dir_name) |
2607 | 29921401 | Iustin Pop | except OSError: |
2608 | 10c2650b | Iustin Pop | # FIXME: must log output in case of failures
|
2609 | c26a6bd2 | Iustin Pop | return rr
|
2610 | a8083063 | Iustin Pop | |
2611 | a8083063 | Iustin Pop | # we use the standard python sort order,
|
2612 | a8083063 | Iustin Pop | # so 00name is the recommended naming scheme
|
2613 | a8083063 | Iustin Pop | dir_contents.sort() |
2614 | a8083063 | Iustin Pop | for relname in dir_contents: |
2615 | a8083063 | Iustin Pop | fname = os.path.join(dir_name, relname) |
2616 | a8083063 | Iustin Pop | if not (os.path.isfile(fname) and os.access(fname, os.X_OK) and |
2617 | a8083063 | Iustin Pop | self.RE_MASK.match(relname) is not None): |
2618 | a8083063 | Iustin Pop | rrval = constants.HKR_SKIP |
2619 | a8083063 | Iustin Pop | output = ""
|
2620 | a8083063 | Iustin Pop | else:
|
2621 | a8083063 | Iustin Pop | result, output = self.ExecHook(fname, env)
|
2622 | a8083063 | Iustin Pop | if not result: |
2623 | a8083063 | Iustin Pop | rrval = constants.HKR_FAIL |
2624 | a8083063 | Iustin Pop | else:
|
2625 | a8083063 | Iustin Pop | rrval = constants.HKR_SUCCESS |
2626 | a8083063 | Iustin Pop | rr.append(("%s/%s" % (subdir, relname), rrval, output))
|
2627 | a8083063 | Iustin Pop | |
2628 | c26a6bd2 | Iustin Pop | return rr
|
2629 | 3f78eef2 | Iustin Pop | |
2630 | 3f78eef2 | Iustin Pop | |
2631 | 8d528b7c | Iustin Pop | class IAllocatorRunner(object): |
2632 | 8d528b7c | Iustin Pop | """IAllocator runner.
|
2633 | 8d528b7c | Iustin Pop |
|
2634 | 8d528b7c | Iustin Pop | This class is instantiated on the node side (ganeti-noded) and not on
|
2635 | 8d528b7c | Iustin Pop | the master side.
|
2636 | 8d528b7c | Iustin Pop |
|
2637 | 8d528b7c | Iustin Pop | """
|
2638 | 8d528b7c | Iustin Pop | def Run(self, name, idata): |
2639 | 8d528b7c | Iustin Pop | """Run an iallocator script.
|
2640 | 8d528b7c | Iustin Pop |
|
2641 | 10c2650b | Iustin Pop | @type name: str
|
2642 | 10c2650b | Iustin Pop | @param name: the iallocator script name
|
2643 | 10c2650b | Iustin Pop | @type idata: str
|
2644 | 10c2650b | Iustin Pop | @param idata: the allocator input data
|
2645 | 10c2650b | Iustin Pop |
|
2646 | 10c2650b | Iustin Pop | @rtype: tuple
|
2647 | 87f5c298 | Iustin Pop | @return: two element tuple of:
|
2648 | 87f5c298 | Iustin Pop | - status
|
2649 | 87f5c298 | Iustin Pop | - either error message or stdout of allocator (for success)
|
2650 | 8d528b7c | Iustin Pop |
|
2651 | 8d528b7c | Iustin Pop | """
|
2652 | 8d528b7c | Iustin Pop | alloc_script = utils.FindFile(name, constants.IALLOCATOR_SEARCH_PATH, |
2653 | 8d528b7c | Iustin Pop | os.path.isfile) |
2654 | 8d528b7c | Iustin Pop | if alloc_script is None: |
2655 | 87f5c298 | Iustin Pop | _Fail("iallocator module '%s' not found in the search path", name)
|
2656 | 8d528b7c | Iustin Pop | |
2657 | 8d528b7c | Iustin Pop | fd, fin_name = tempfile.mkstemp(prefix="ganeti-iallocator.")
|
2658 | 8d528b7c | Iustin Pop | try:
|
2659 | 8d528b7c | Iustin Pop | os.write(fd, idata) |
2660 | 8d528b7c | Iustin Pop | os.close(fd) |
2661 | 8d528b7c | Iustin Pop | result = utils.RunCmd([alloc_script, fin_name]) |
2662 | 8d528b7c | Iustin Pop | if result.failed:
|
2663 | 87f5c298 | Iustin Pop | _Fail("iallocator module '%s' failed: %s, output '%s'",
|
2664 | 87f5c298 | Iustin Pop | name, result.fail_reason, result.output) |
2665 | 8d528b7c | Iustin Pop | finally:
|
2666 | 8d528b7c | Iustin Pop | os.unlink(fin_name) |
2667 | 8d528b7c | Iustin Pop | |
2668 | c26a6bd2 | Iustin Pop | return result.stdout
|
2669 | 8d528b7c | Iustin Pop | |
2670 | 8d528b7c | Iustin Pop | |
2671 | 3f78eef2 | Iustin Pop | class DevCacheManager(object): |
2672 | c99a3cc0 | Manuel Franceschini | """Simple class for managing a cache of block device information.
|
2673 | 3f78eef2 | Iustin Pop |
|
2674 | 3f78eef2 | Iustin Pop | """
|
2675 | 3f78eef2 | Iustin Pop | _DEV_PREFIX = "/dev/"
|
2676 | 3f78eef2 | Iustin Pop | _ROOT_DIR = constants.BDEV_CACHE_DIR |
2677 | 3f78eef2 | Iustin Pop | |
2678 | 3f78eef2 | Iustin Pop | @classmethod
|
2679 | 3f78eef2 | Iustin Pop | def _ConvertPath(cls, dev_path): |
2680 | 3f78eef2 | Iustin Pop | """Converts a /dev/name path to the cache file name.
|
2681 | 3f78eef2 | Iustin Pop |
|
2682 | 3f78eef2 | Iustin Pop | This replaces slashes with underscores and strips the /dev
|
2683 | 10c2650b | Iustin Pop | prefix. It then returns the full path to the cache file.
|
2684 | 10c2650b | Iustin Pop |
|
2685 | 10c2650b | Iustin Pop | @type dev_path: str
|
2686 | 10c2650b | Iustin Pop | @param dev_path: the C{/dev/} path name
|
2687 | 10c2650b | Iustin Pop | @rtype: str
|
2688 | 10c2650b | Iustin Pop | @return: the converted path name
|
2689 | 3f78eef2 | Iustin Pop |
|
2690 | 3f78eef2 | Iustin Pop | """
|
2691 | 3f78eef2 | Iustin Pop | if dev_path.startswith(cls._DEV_PREFIX):
|
2692 | 3f78eef2 | Iustin Pop | dev_path = dev_path[len(cls._DEV_PREFIX):]
|
2693 | 3f78eef2 | Iustin Pop | dev_path = dev_path.replace("/", "_") |
2694 | 3f78eef2 | Iustin Pop | fpath = "%s/bdev_%s" % (cls._ROOT_DIR, dev_path)
|
2695 | 3f78eef2 | Iustin Pop | return fpath
|
2696 | 3f78eef2 | Iustin Pop | |
2697 | 3f78eef2 | Iustin Pop | @classmethod
|
2698 | 3f78eef2 | Iustin Pop | def UpdateCache(cls, dev_path, owner, on_primary, iv_name): |
2699 | 3f78eef2 | Iustin Pop | """Updates the cache information for a given device.
|
2700 | 3f78eef2 | Iustin Pop |
|
2701 | 10c2650b | Iustin Pop | @type dev_path: str
|
2702 | 10c2650b | Iustin Pop | @param dev_path: the pathname of the device
|
2703 | 10c2650b | Iustin Pop | @type owner: str
|
2704 | 10c2650b | Iustin Pop | @param owner: the owner (instance name) of the device
|
2705 | 10c2650b | Iustin Pop | @type on_primary: bool
|
2706 | 10c2650b | Iustin Pop | @param on_primary: whether this is the primary
|
2707 | 10c2650b | Iustin Pop | node nor not
|
2708 | 10c2650b | Iustin Pop | @type iv_name: str
|
2709 | 10c2650b | Iustin Pop | @param iv_name: the instance-visible name of the
|
2710 | c41eea6e | Iustin Pop | device, as in objects.Disk.iv_name
|
2711 | 10c2650b | Iustin Pop |
|
2712 | 10c2650b | Iustin Pop | @rtype: None
|
2713 | 10c2650b | Iustin Pop |
|
2714 | 3f78eef2 | Iustin Pop | """
|
2715 | cf5a8306 | Iustin Pop | if dev_path is None: |
2716 | 18682bca | Iustin Pop | logging.error("DevCacheManager.UpdateCache got a None dev_path")
|
2717 | cf5a8306 | Iustin Pop | return
|
2718 | 3f78eef2 | Iustin Pop | fpath = cls._ConvertPath(dev_path) |
2719 | 3f78eef2 | Iustin Pop | if on_primary:
|
2720 | 3f78eef2 | Iustin Pop | state = "primary"
|
2721 | 3f78eef2 | Iustin Pop | else:
|
2722 | 3f78eef2 | Iustin Pop | state = "secondary"
|
2723 | 3f78eef2 | Iustin Pop | if iv_name is None: |
2724 | 3f78eef2 | Iustin Pop | iv_name = "not_visible"
|
2725 | 3f78eef2 | Iustin Pop | fdata = "%s %s %s\n" % (str(owner), state, iv_name) |
2726 | 3f78eef2 | Iustin Pop | try:
|
2727 | 3f78eef2 | Iustin Pop | utils.WriteFile(fpath, data=fdata) |
2728 | 3f78eef2 | Iustin Pop | except EnvironmentError, err: |
2729 | 29921401 | Iustin Pop | logging.exception("Can't update bdev cache for %s: %s", dev_path, err)
|
2730 | 3f78eef2 | Iustin Pop | |
2731 | 3f78eef2 | Iustin Pop | @classmethod
|
2732 | 3f78eef2 | Iustin Pop | def RemoveCache(cls, dev_path): |
2733 | 3f78eef2 | Iustin Pop | """Remove data for a dev_path.
|
2734 | 3f78eef2 | Iustin Pop |
|
2735 | 10c2650b | Iustin Pop | This is just a wrapper over L{utils.RemoveFile} with a converted
|
2736 | 10c2650b | Iustin Pop | path name and logging.
|
2737 | 10c2650b | Iustin Pop |
|
2738 | 10c2650b | Iustin Pop | @type dev_path: str
|
2739 | 10c2650b | Iustin Pop | @param dev_path: the pathname of the device
|
2740 | 10c2650b | Iustin Pop |
|
2741 | 10c2650b | Iustin Pop | @rtype: None
|
2742 | 10c2650b | Iustin Pop |
|
2743 | 3f78eef2 | Iustin Pop | """
|
2744 | cf5a8306 | Iustin Pop | if dev_path is None: |
2745 | 18682bca | Iustin Pop | logging.error("DevCacheManager.RemoveCache got a None dev_path")
|
2746 | cf5a8306 | Iustin Pop | return
|
2747 | 3f78eef2 | Iustin Pop | fpath = cls._ConvertPath(dev_path) |
2748 | 3f78eef2 | Iustin Pop | try:
|
2749 | 3f78eef2 | Iustin Pop | utils.RemoveFile(fpath) |
2750 | 3f78eef2 | Iustin Pop | except EnvironmentError, err: |
2751 | 29921401 | Iustin Pop | logging.exception("Can't update bdev cache for %s: %s", dev_path, err) |