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2 | a8083063 | Iustin Pop | #
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3 | a8083063 | Iustin Pop | |
4 | a8083063 | Iustin Pop | # Copyright (C) 2006, 2007 Google Inc.
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5 | a8083063 | Iustin Pop | #
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6 | a8083063 | Iustin Pop | # This program is free software; you can redistribute it and/or modify
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7 | a8083063 | Iustin Pop | # it under the terms of the GNU General Public License as published by
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8 | a8083063 | Iustin Pop | # the Free Software Foundation; either version 2 of the License, or
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9 | a8083063 | Iustin Pop | # (at your option) any later version.
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10 | a8083063 | Iustin Pop | #
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11 | a8083063 | Iustin Pop | # This program is distributed in the hope that it will be useful, but
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12 | a8083063 | Iustin Pop | # WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | a8083063 | Iustin Pop | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | a8083063 | Iustin Pop | # General Public License for more details.
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15 | a8083063 | Iustin Pop | #
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16 | a8083063 | Iustin Pop | # You should have received a copy of the GNU General Public License
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17 | a8083063 | Iustin Pop | # along with this program; if not, write to the Free Software
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18 | a8083063 | Iustin Pop | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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19 | a8083063 | Iustin Pop | # 02110-1301, USA.
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20 | a8083063 | Iustin Pop | |
21 | a8083063 | Iustin Pop | |
22 | a8083063 | Iustin Pop | """Functions used by the node daemon"""
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23 | a8083063 | Iustin Pop | |
24 | a8083063 | Iustin Pop | |
25 | a8083063 | Iustin Pop | import os |
26 | a8083063 | Iustin Pop | import os.path |
27 | a8083063 | Iustin Pop | import shutil |
28 | a8083063 | Iustin Pop | import time |
29 | a8083063 | Iustin Pop | import tempfile |
30 | a8083063 | Iustin Pop | import stat |
31 | a8083063 | Iustin Pop | import errno |
32 | a8083063 | Iustin Pop | import re |
33 | a8083063 | Iustin Pop | import subprocess |
34 | a8083063 | Iustin Pop | |
35 | a8083063 | Iustin Pop | from ganeti import logger |
36 | a8083063 | Iustin Pop | from ganeti import errors |
37 | a8083063 | Iustin Pop | from ganeti import utils |
38 | a8083063 | Iustin Pop | from ganeti import ssh |
39 | a8083063 | Iustin Pop | from ganeti import hypervisor |
40 | a8083063 | Iustin Pop | from ganeti import constants |
41 | a8083063 | Iustin Pop | from ganeti import bdev |
42 | a8083063 | Iustin Pop | from ganeti import objects |
43 | 880478f8 | Iustin Pop | from ganeti import ssconf |
44 | a8083063 | Iustin Pop | |
45 | a8083063 | Iustin Pop | |
46 | a8083063 | Iustin Pop | def StartMaster(): |
47 | a8083063 | Iustin Pop | """Activate local node as master node.
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48 | a8083063 | Iustin Pop |
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49 | a8083063 | Iustin Pop | There are two needed steps for this:
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50 | 880478f8 | Iustin Pop | - run the master script
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51 | a8083063 | Iustin Pop | - register the cron script
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52 | a8083063 | Iustin Pop |
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53 | a8083063 | Iustin Pop | """
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54 | 880478f8 | Iustin Pop | result = utils.RunCmd([constants.MASTER_SCRIPT, "-d", "start"]) |
55 | a8083063 | Iustin Pop | |
56 | a8083063 | Iustin Pop | if result.failed:
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57 | a8083063 | Iustin Pop | logger.Error("could not activate cluster interface with command %s,"
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58 | 880478f8 | Iustin Pop | " error: '%s'" % (result.cmd, result.output))
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59 | a8083063 | Iustin Pop | return False |
60 | a8083063 | Iustin Pop | |
61 | a8083063 | Iustin Pop | return True |
62 | a8083063 | Iustin Pop | |
63 | a8083063 | Iustin Pop | |
64 | a8083063 | Iustin Pop | def StopMaster(): |
65 | a8083063 | Iustin Pop | """Deactivate this node as master.
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66 | a8083063 | Iustin Pop |
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67 | a8083063 | Iustin Pop | This does two things:
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68 | 880478f8 | Iustin Pop | - run the master stop script
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69 | a8083063 | Iustin Pop | - remove link to master cron script.
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70 | a8083063 | Iustin Pop |
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71 | a8083063 | Iustin Pop | """
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72 | 880478f8 | Iustin Pop | result = utils.RunCmd([constants.MASTER_SCRIPT, "-d", "stop"]) |
73 | a8083063 | Iustin Pop | |
74 | a8083063 | Iustin Pop | if result.failed:
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75 | a8083063 | Iustin Pop | logger.Error("could not deactivate cluster interface with command %s,"
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76 | 880478f8 | Iustin Pop | " error: '%s'" % (result.cmd, result.output))
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77 | a8083063 | Iustin Pop | return False |
78 | a8083063 | Iustin Pop | |
79 | a8083063 | Iustin Pop | return True |
80 | a8083063 | Iustin Pop | |
81 | a8083063 | Iustin Pop | |
82 | 9716fdce | Iustin Pop | def AddNode(dsa, dsapub, rsa, rsapub, sshkey, sshpub): |
83 | 7900ed01 | Iustin Pop | """Joins this node to the cluster.
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84 | a8083063 | Iustin Pop |
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85 | 7900ed01 | Iustin Pop | This does the following:
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86 | 7900ed01 | Iustin Pop | - updates the hostkeys of the machine (rsa and dsa)
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87 | 7900ed01 | Iustin Pop | - adds the ssh private key to the user
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88 | 7900ed01 | Iustin Pop | - adds the ssh public key to the users' authorized_keys file
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89 | a8083063 | Iustin Pop |
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90 | 7900ed01 | Iustin Pop | """
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91 | 70d9e3d8 | Iustin Pop | sshd_keys = [(constants.SSH_HOST_RSA_PRIV, rsa, 0600),
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92 | 70d9e3d8 | Iustin Pop | (constants.SSH_HOST_RSA_PUB, rsapub, 0644),
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93 | 70d9e3d8 | Iustin Pop | (constants.SSH_HOST_DSA_PRIV, dsa, 0600),
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94 | 70d9e3d8 | Iustin Pop | (constants.SSH_HOST_DSA_PUB, dsapub, 0644)]
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95 | 7900ed01 | Iustin Pop | for name, content, mode in sshd_keys: |
96 | 70d9e3d8 | Iustin Pop | utils.WriteFile(name, data=content, mode=mode) |
97 | a8083063 | Iustin Pop | |
98 | 70d9e3d8 | Iustin Pop | try:
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99 | 70d9e3d8 | Iustin Pop | priv_key, pub_key, auth_keys = ssh.GetUserFiles(constants.GANETI_RUNAS, |
100 | 70d9e3d8 | Iustin Pop | mkdir=True)
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101 | 70d9e3d8 | Iustin Pop | except errors.OpExecError, err:
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102 | 70d9e3d8 | Iustin Pop | logger.Error("Error while processing user ssh files: %s" % err)
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103 | 70d9e3d8 | Iustin Pop | return False |
104 | a8083063 | Iustin Pop | |
105 | 70d9e3d8 | Iustin Pop | for name, content in [(priv_key, sshkey), (pub_key, sshpub)]: |
106 | 70d9e3d8 | Iustin Pop | utils.WriteFile(name, data=content, mode=0600)
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107 | a8083063 | Iustin Pop | |
108 | 70d9e3d8 | Iustin Pop | utils.AddAuthorizedKey(auth_keys, sshpub) |
109 | a8083063 | Iustin Pop | |
110 | f491c3a8 | Michael Hanselmann | utils.RunCmd([constants.SSH_INITD_SCRIPT, "restart"])
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111 | a8083063 | Iustin Pop | |
112 | a8083063 | Iustin Pop | return True |
113 | a8083063 | Iustin Pop | |
114 | a8083063 | Iustin Pop | |
115 | a8083063 | Iustin Pop | def LeaveCluster(): |
116 | a8083063 | Iustin Pop | """Cleans up the current node and prepares it to be removed from the cluster.
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117 | a8083063 | Iustin Pop |
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118 | a8083063 | Iustin Pop | """
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119 | 71eca7c3 | Iustin Pop | if os.path.isdir(constants.DATA_DIR):
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120 | 71eca7c3 | Iustin Pop | for rel_name in utils.ListVisibleFiles(constants.DATA_DIR): |
121 | 71eca7c3 | Iustin Pop | full_name = os.path.join(constants.DATA_DIR, rel_name) |
122 | 71eca7c3 | Iustin Pop | if os.path.isfile(full_name) and not os.path.islink(full_name): |
123 | 71eca7c3 | Iustin Pop | utils.RemoveFile(full_name) |
124 | a8083063 | Iustin Pop | |
125 | 7900ed01 | Iustin Pop | |
126 | 70d9e3d8 | Iustin Pop | try:
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127 | 70d9e3d8 | Iustin Pop | priv_key, pub_key, auth_keys = ssh.GetUserFiles(constants.GANETI_RUNAS) |
128 | 70d9e3d8 | Iustin Pop | except errors.OpExecError, err:
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129 | 70d9e3d8 | Iustin Pop | logger.Error("Error while processing ssh files: %s" % err)
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130 | 7900ed01 | Iustin Pop | return
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131 | 7900ed01 | Iustin Pop | |
132 | 70d9e3d8 | Iustin Pop | f = open(pub_key, 'r') |
133 | a8083063 | Iustin Pop | try:
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134 | 70d9e3d8 | Iustin Pop | utils.RemoveAuthorizedKey(auth_keys, f.read(8192))
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135 | a8083063 | Iustin Pop | finally:
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136 | a8083063 | Iustin Pop | f.close() |
137 | a8083063 | Iustin Pop | |
138 | 70d9e3d8 | Iustin Pop | utils.RemoveFile(priv_key) |
139 | 70d9e3d8 | Iustin Pop | utils.RemoveFile(pub_key) |
140 | a8083063 | Iustin Pop | |
141 | a8083063 | Iustin Pop | |
142 | a8083063 | Iustin Pop | def GetNodeInfo(vgname): |
143 | 2f8598a5 | Alexander Schreiber | """Gives back a hash with different informations about the node.
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144 | a8083063 | Iustin Pop |
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145 | a8083063 | Iustin Pop | Returns:
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146 | a8083063 | Iustin Pop | { 'vg_size' : xxx, 'vg_free' : xxx, 'memory_domain0': xxx,
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147 | a8083063 | Iustin Pop | 'memory_free' : xxx, 'memory_total' : xxx }
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148 | a8083063 | Iustin Pop | where
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149 | a8083063 | Iustin Pop | vg_size is the size of the configured volume group in MiB
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150 | a8083063 | Iustin Pop | vg_free is the free size of the volume group in MiB
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151 | a8083063 | Iustin Pop | memory_dom0 is the memory allocated for domain0 in MiB
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152 | a8083063 | Iustin Pop | memory_free is the currently available (free) ram in MiB
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153 | a8083063 | Iustin Pop | memory_total is the total number of ram in MiB
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154 | a8083063 | Iustin Pop |
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155 | 098c0958 | Michael Hanselmann | """
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156 | a8083063 | Iustin Pop | outputarray = {} |
157 | a8083063 | Iustin Pop | vginfo = _GetVGInfo(vgname) |
158 | a8083063 | Iustin Pop | outputarray['vg_size'] = vginfo['vg_size'] |
159 | a8083063 | Iustin Pop | outputarray['vg_free'] = vginfo['vg_free'] |
160 | a8083063 | Iustin Pop | |
161 | a8083063 | Iustin Pop | hyper = hypervisor.GetHypervisor() |
162 | a8083063 | Iustin Pop | hyp_info = hyper.GetNodeInfo() |
163 | a8083063 | Iustin Pop | if hyp_info is not None: |
164 | a8083063 | Iustin Pop | outputarray.update(hyp_info) |
165 | a8083063 | Iustin Pop | |
166 | 3ef10550 | Michael Hanselmann | f = open("/proc/sys/kernel/random/boot_id", 'r') |
167 | 3ef10550 | Michael Hanselmann | try:
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168 | 3ef10550 | Michael Hanselmann | outputarray["bootid"] = f.read(128).rstrip("\n") |
169 | 3ef10550 | Michael Hanselmann | finally:
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170 | 3ef10550 | Michael Hanselmann | f.close() |
171 | 3ef10550 | Michael Hanselmann | |
172 | a8083063 | Iustin Pop | return outputarray
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173 | a8083063 | Iustin Pop | |
174 | a8083063 | Iustin Pop | |
175 | a8083063 | Iustin Pop | def VerifyNode(what): |
176 | a8083063 | Iustin Pop | """Verify the status of the local node.
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177 | a8083063 | Iustin Pop |
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178 | a8083063 | Iustin Pop | Args:
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179 | a8083063 | Iustin Pop | what - a dictionary of things to check:
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180 | a8083063 | Iustin Pop | 'filelist' : list of files for which to compute checksums
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181 | a8083063 | Iustin Pop | 'nodelist' : list of nodes we should check communication with
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182 | a8083063 | Iustin Pop | 'hypervisor': run the hypervisor-specific verify
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183 | a8083063 | Iustin Pop |
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184 | a8083063 | Iustin Pop | Requested files on local node are checksummed and the result returned.
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185 | a8083063 | Iustin Pop |
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186 | a8083063 | Iustin Pop | The nodelist is traversed, with the following checks being made
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187 | a8083063 | Iustin Pop | for each node:
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188 | a8083063 | Iustin Pop | - known_hosts key correct
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189 | a8083063 | Iustin Pop | - correct resolving of node name (target node returns its own hostname
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190 | a8083063 | Iustin Pop | by ssh-execution of 'hostname', result compared against name in list.
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191 | a8083063 | Iustin Pop |
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192 | a8083063 | Iustin Pop | """
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193 | a8083063 | Iustin Pop | result = {} |
194 | a8083063 | Iustin Pop | |
195 | a8083063 | Iustin Pop | if 'hypervisor' in what: |
196 | a8083063 | Iustin Pop | result['hypervisor'] = hypervisor.GetHypervisor().Verify()
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197 | a8083063 | Iustin Pop | |
198 | a8083063 | Iustin Pop | if 'filelist' in what: |
199 | a8083063 | Iustin Pop | result['filelist'] = utils.FingerprintFiles(what['filelist']) |
200 | a8083063 | Iustin Pop | |
201 | a8083063 | Iustin Pop | if 'nodelist' in what: |
202 | a8083063 | Iustin Pop | result['nodelist'] = {}
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203 | a8083063 | Iustin Pop | for node in what['nodelist']: |
204 | a8083063 | Iustin Pop | success, message = ssh.VerifyNodeHostname(node) |
205 | a8083063 | Iustin Pop | if not success: |
206 | a8083063 | Iustin Pop | result['nodelist'][node] = message
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207 | a8083063 | Iustin Pop | return result
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208 | a8083063 | Iustin Pop | |
209 | a8083063 | Iustin Pop | |
210 | a8083063 | Iustin Pop | def GetVolumeList(vg_name): |
211 | a8083063 | Iustin Pop | """Compute list of logical volumes and their size.
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212 | a8083063 | Iustin Pop |
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213 | a8083063 | Iustin Pop | Returns:
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214 | a8083063 | Iustin Pop | dictionary of all partions (key) with their size:
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215 | a8083063 | Iustin Pop | test1: 20.06MiB
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216 | a8083063 | Iustin Pop |
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217 | a8083063 | Iustin Pop | """
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218 | a8083063 | Iustin Pop | result = utils.RunCmd(["lvs", "--noheadings", "--units=m", |
219 | a8083063 | Iustin Pop | "-oname,size", vg_name])
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220 | a8083063 | Iustin Pop | if result.failed:
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221 | a8083063 | Iustin Pop | logger.Error("Failed to list logical volumes, lvs output: %s" %
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222 | a8083063 | Iustin Pop | result.output) |
223 | a8083063 | Iustin Pop | return {}
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224 | a8083063 | Iustin Pop | |
225 | a8083063 | Iustin Pop | lvlist = [line.split() for line in result.output.splitlines()] |
226 | a8083063 | Iustin Pop | return dict(lvlist) |
227 | a8083063 | Iustin Pop | |
228 | a8083063 | Iustin Pop | |
229 | a8083063 | Iustin Pop | def ListVolumeGroups(): |
230 | 2f8598a5 | Alexander Schreiber | """List the volume groups and their size.
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231 | a8083063 | Iustin Pop |
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232 | a8083063 | Iustin Pop | Returns:
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233 | a8083063 | Iustin Pop | Dictionary with keys volume name and values the size of the volume
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234 | a8083063 | Iustin Pop |
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235 | a8083063 | Iustin Pop | """
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236 | a8083063 | Iustin Pop | return utils.ListVolumeGroups()
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237 | a8083063 | Iustin Pop | |
238 | a8083063 | Iustin Pop | |
239 | dcb93971 | Michael Hanselmann | def NodeVolumes(): |
240 | dcb93971 | Michael Hanselmann | """List all volumes on this node.
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241 | dcb93971 | Michael Hanselmann |
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242 | dcb93971 | Michael Hanselmann | """
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243 | dcb93971 | Michael Hanselmann | result = utils.RunCmd(["lvs", "--noheadings", "--units=m", "--nosuffix", |
244 | dcb93971 | Michael Hanselmann | "--separator=|",
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245 | dcb93971 | Michael Hanselmann | "--options=lv_name,lv_size,devices,vg_name"])
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246 | dcb93971 | Michael Hanselmann | if result.failed:
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247 | dcb93971 | Michael Hanselmann | logger.Error("Failed to list logical volumes, lvs output: %s" %
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248 | dcb93971 | Michael Hanselmann | result.output) |
249 | dcb93971 | Michael Hanselmann | return {}
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250 | dcb93971 | Michael Hanselmann | |
251 | dcb93971 | Michael Hanselmann | def parse_dev(dev): |
252 | dcb93971 | Michael Hanselmann | if '(' in dev: |
253 | dcb93971 | Michael Hanselmann | return dev.split('(')[0] |
254 | dcb93971 | Michael Hanselmann | else:
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255 | dcb93971 | Michael Hanselmann | return dev
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256 | dcb93971 | Michael Hanselmann | |
257 | dcb93971 | Michael Hanselmann | def map_line(line): |
258 | dcb93971 | Michael Hanselmann | return {
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259 | dcb93971 | Michael Hanselmann | 'name': line[0].strip(), |
260 | dcb93971 | Michael Hanselmann | 'size': line[1].strip(), |
261 | dcb93971 | Michael Hanselmann | 'dev': parse_dev(line[2].strip()), |
262 | dcb93971 | Michael Hanselmann | 'vg': line[3].strip(), |
263 | dcb93971 | Michael Hanselmann | } |
264 | dcb93971 | Michael Hanselmann | |
265 | dcb93971 | Michael Hanselmann | return [map_line(line.split('|')) for line in result.output.splitlines()] |
266 | dcb93971 | Michael Hanselmann | |
267 | dcb93971 | Michael Hanselmann | |
268 | a8083063 | Iustin Pop | def BridgesExist(bridges_list): |
269 | 2f8598a5 | Alexander Schreiber | """Check if a list of bridges exist on the current node.
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270 | a8083063 | Iustin Pop |
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271 | a8083063 | Iustin Pop | Returns:
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272 | a8083063 | Iustin Pop | True if all of them exist, false otherwise
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273 | a8083063 | Iustin Pop |
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274 | a8083063 | Iustin Pop | """
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275 | a8083063 | Iustin Pop | for bridge in bridges_list: |
276 | a8083063 | Iustin Pop | if not utils.BridgeExists(bridge): |
277 | a8083063 | Iustin Pop | return False |
278 | a8083063 | Iustin Pop | |
279 | a8083063 | Iustin Pop | return True |
280 | a8083063 | Iustin Pop | |
281 | a8083063 | Iustin Pop | |
282 | a8083063 | Iustin Pop | def GetInstanceList(): |
283 | 2f8598a5 | Alexander Schreiber | """Provides a list of instances.
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284 | a8083063 | Iustin Pop |
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285 | a8083063 | Iustin Pop | Returns:
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286 | a8083063 | Iustin Pop | A list of all running instances on the current node
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287 | a8083063 | Iustin Pop | - instance1.example.com
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288 | a8083063 | Iustin Pop | - instance2.example.com
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289 | a8083063 | Iustin Pop |
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290 | 098c0958 | Michael Hanselmann | """
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291 | a8083063 | Iustin Pop | try:
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292 | a8083063 | Iustin Pop | names = hypervisor.GetHypervisor().ListInstances() |
293 | a8083063 | Iustin Pop | except errors.HypervisorError, err:
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294 | a8083063 | Iustin Pop | logger.Error("error enumerating instances: %s" % str(err)) |
295 | a8083063 | Iustin Pop | raise
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296 | a8083063 | Iustin Pop | |
297 | a8083063 | Iustin Pop | return names
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298 | a8083063 | Iustin Pop | |
299 | a8083063 | Iustin Pop | |
300 | a8083063 | Iustin Pop | def GetInstanceInfo(instance): |
301 | 2f8598a5 | Alexander Schreiber | """Gives back the informations about an instance as a dictionary.
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302 | a8083063 | Iustin Pop |
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303 | a8083063 | Iustin Pop | Args:
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304 | a8083063 | Iustin Pop | instance: name of the instance (ex. instance1.example.com)
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305 | a8083063 | Iustin Pop |
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306 | a8083063 | Iustin Pop | Returns:
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307 | a8083063 | Iustin Pop | { 'memory' : 511, 'state' : '-b---', 'time' : 3188.8, }
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308 | a8083063 | Iustin Pop | where
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309 | a8083063 | Iustin Pop | memory: memory size of instance (int)
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310 | a8083063 | Iustin Pop | state: xen state of instance (string)
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311 | a8083063 | Iustin Pop | time: cpu time of instance (float)
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312 | a8083063 | Iustin Pop |
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313 | 098c0958 | Michael Hanselmann | """
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314 | a8083063 | Iustin Pop | output = {} |
315 | a8083063 | Iustin Pop | |
316 | a8083063 | Iustin Pop | iinfo = hypervisor.GetHypervisor().GetInstanceInfo(instance) |
317 | a8083063 | Iustin Pop | if iinfo is not None: |
318 | a8083063 | Iustin Pop | output['memory'] = iinfo[2] |
319 | a8083063 | Iustin Pop | output['state'] = iinfo[4] |
320 | a8083063 | Iustin Pop | output['time'] = iinfo[5] |
321 | a8083063 | Iustin Pop | |
322 | a8083063 | Iustin Pop | return output
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323 | a8083063 | Iustin Pop | |
324 | a8083063 | Iustin Pop | |
325 | a8083063 | Iustin Pop | def GetAllInstancesInfo(): |
326 | a8083063 | Iustin Pop | """Gather data about all instances.
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327 | a8083063 | Iustin Pop |
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328 | a8083063 | Iustin Pop | This is the equivalent of `GetInstanceInfo()`, except that it
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329 | a8083063 | Iustin Pop | computes data for all instances at once, thus being faster if one
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330 | a8083063 | Iustin Pop | needs data about more than one instance.
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331 | a8083063 | Iustin Pop |
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332 | a8083063 | Iustin Pop | Returns: a dictionary of dictionaries, keys being the instance name,
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333 | a8083063 | Iustin Pop | and with values:
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334 | a8083063 | Iustin Pop | { 'memory' : 511, 'state' : '-b---', 'time' : 3188.8, }
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335 | a8083063 | Iustin Pop | where
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336 | a8083063 | Iustin Pop | memory: memory size of instance (int)
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337 | a8083063 | Iustin Pop | state: xen state of instance (string)
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338 | a8083063 | Iustin Pop | time: cpu time of instance (float)
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339 | a8083063 | Iustin Pop | vcpus: the number of cpus
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340 | a8083063 | Iustin Pop |
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341 | 098c0958 | Michael Hanselmann | """
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342 | a8083063 | Iustin Pop | output = {} |
343 | a8083063 | Iustin Pop | |
344 | a8083063 | Iustin Pop | iinfo = hypervisor.GetHypervisor().GetAllInstancesInfo() |
345 | a8083063 | Iustin Pop | if iinfo:
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346 | 3ecf6786 | Iustin Pop | for name, inst_id, memory, vcpus, state, times in iinfo: |
347 | a8083063 | Iustin Pop | output[name] = { |
348 | a8083063 | Iustin Pop | 'memory': memory,
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349 | a8083063 | Iustin Pop | 'vcpus': vcpus,
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350 | a8083063 | Iustin Pop | 'state': state,
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351 | a8083063 | Iustin Pop | 'time': times,
|
352 | a8083063 | Iustin Pop | } |
353 | a8083063 | Iustin Pop | |
354 | a8083063 | Iustin Pop | return output
|
355 | a8083063 | Iustin Pop | |
356 | a8083063 | Iustin Pop | |
357 | a8083063 | Iustin Pop | def AddOSToInstance(instance, os_disk, swap_disk): |
358 | 2f8598a5 | Alexander Schreiber | """Add an OS to an instance.
|
359 | a8083063 | Iustin Pop |
|
360 | a8083063 | Iustin Pop | Args:
|
361 | a8083063 | Iustin Pop | instance: the instance object
|
362 | a8083063 | Iustin Pop | os_disk: the instance-visible name of the os device
|
363 | a8083063 | Iustin Pop | swap_disk: the instance-visible name of the swap device
|
364 | a8083063 | Iustin Pop |
|
365 | a8083063 | Iustin Pop | """
|
366 | a8083063 | Iustin Pop | inst_os = OSFromDisk(instance.os) |
367 | a8083063 | Iustin Pop | |
368 | a8083063 | Iustin Pop | create_script = inst_os.create_script |
369 | a8083063 | Iustin Pop | |
370 | 9716fdce | Iustin Pop | os_device = instance.FindDisk(os_disk) |
371 | 9716fdce | Iustin Pop | if os_device is None: |
372 | a8083063 | Iustin Pop | logger.Error("Can't find this device-visible name '%s'" % os_disk)
|
373 | a8083063 | Iustin Pop | return False |
374 | a8083063 | Iustin Pop | |
375 | 9716fdce | Iustin Pop | swap_device = instance.FindDisk(swap_disk) |
376 | 9716fdce | Iustin Pop | if swap_device is None: |
377 | a8083063 | Iustin Pop | logger.Error("Can't find this device-visible name '%s'" % swap_disk)
|
378 | a8083063 | Iustin Pop | return False |
379 | a8083063 | Iustin Pop | |
380 | a8083063 | Iustin Pop | real_os_dev = _RecursiveFindBD(os_device) |
381 | a8083063 | Iustin Pop | if real_os_dev is None: |
382 | a8083063 | Iustin Pop | raise errors.BlockDeviceError("Block device '%s' is not set up" % |
383 | a8083063 | Iustin Pop | str(os_device))
|
384 | a8083063 | Iustin Pop | real_os_dev.Open() |
385 | a8083063 | Iustin Pop | |
386 | a8083063 | Iustin Pop | real_swap_dev = _RecursiveFindBD(swap_device) |
387 | a8083063 | Iustin Pop | if real_swap_dev is None: |
388 | a8083063 | Iustin Pop | raise errors.BlockDeviceError("Block device '%s' is not set up" % |
389 | a8083063 | Iustin Pop | str(swap_device))
|
390 | a8083063 | Iustin Pop | real_swap_dev.Open() |
391 | a8083063 | Iustin Pop | |
392 | a8083063 | Iustin Pop | logfile = "%s/add-%s-%s-%d.log" % (constants.LOG_OS_DIR, instance.os,
|
393 | a8083063 | Iustin Pop | instance.name, int(time.time()))
|
394 | a8083063 | Iustin Pop | if not os.path.exists(constants.LOG_OS_DIR): |
395 | a8083063 | Iustin Pop | os.mkdir(constants.LOG_OS_DIR, 0750)
|
396 | a8083063 | Iustin Pop | |
397 | c20494cd | Iustin Pop | command = utils.BuildShellCmd("cd %s && %s -i %s -b %s -s %s &>%s",
|
398 | a8083063 | Iustin Pop | inst_os.path, create_script, instance.name, |
399 | a8083063 | Iustin Pop | real_os_dev.dev_path, real_swap_dev.dev_path, |
400 | a8083063 | Iustin Pop | logfile) |
401 | decd5f45 | Iustin Pop | |
402 | decd5f45 | Iustin Pop | result = utils.RunCmd(command) |
403 | decd5f45 | Iustin Pop | |
404 | decd5f45 | Iustin Pop | if result.failed:
|
405 | decd5f45 | Iustin Pop | logger.Error("os create command '%s' returned error: %s"
|
406 | decd5f45 | Iustin Pop | " output: %s" %
|
407 | decd5f45 | Iustin Pop | (command, result.fail_reason, result.output)) |
408 | decd5f45 | Iustin Pop | return False |
409 | decd5f45 | Iustin Pop | |
410 | decd5f45 | Iustin Pop | return True |
411 | decd5f45 | Iustin Pop | |
412 | decd5f45 | Iustin Pop | |
413 | decd5f45 | Iustin Pop | def RunRenameInstance(instance, old_name, os_disk, swap_disk): |
414 | decd5f45 | Iustin Pop | """Run the OS rename script for an instance.
|
415 | decd5f45 | Iustin Pop |
|
416 | decd5f45 | Iustin Pop | Args:
|
417 | decd5f45 | Iustin Pop | instance: the instance object
|
418 | decd5f45 | Iustin Pop | old_name: the old name of the instance
|
419 | decd5f45 | Iustin Pop | os_disk: the instance-visible name of the os device
|
420 | decd5f45 | Iustin Pop | swap_disk: the instance-visible name of the swap device
|
421 | decd5f45 | Iustin Pop |
|
422 | decd5f45 | Iustin Pop | """
|
423 | decd5f45 | Iustin Pop | inst_os = OSFromDisk(instance.os) |
424 | decd5f45 | Iustin Pop | |
425 | decd5f45 | Iustin Pop | script = inst_os.rename_script |
426 | decd5f45 | Iustin Pop | |
427 | decd5f45 | Iustin Pop | os_device = instance.FindDisk(os_disk) |
428 | decd5f45 | Iustin Pop | if os_device is None: |
429 | decd5f45 | Iustin Pop | logger.Error("Can't find this device-visible name '%s'" % os_disk)
|
430 | decd5f45 | Iustin Pop | return False |
431 | decd5f45 | Iustin Pop | |
432 | decd5f45 | Iustin Pop | swap_device = instance.FindDisk(swap_disk) |
433 | decd5f45 | Iustin Pop | if swap_device is None: |
434 | decd5f45 | Iustin Pop | logger.Error("Can't find this device-visible name '%s'" % swap_disk)
|
435 | decd5f45 | Iustin Pop | return False |
436 | decd5f45 | Iustin Pop | |
437 | decd5f45 | Iustin Pop | real_os_dev = _RecursiveFindBD(os_device) |
438 | decd5f45 | Iustin Pop | if real_os_dev is None: |
439 | decd5f45 | Iustin Pop | raise errors.BlockDeviceError("Block device '%s' is not set up" % |
440 | decd5f45 | Iustin Pop | str(os_device))
|
441 | decd5f45 | Iustin Pop | real_os_dev.Open() |
442 | decd5f45 | Iustin Pop | |
443 | decd5f45 | Iustin Pop | real_swap_dev = _RecursiveFindBD(swap_device) |
444 | decd5f45 | Iustin Pop | if real_swap_dev is None: |
445 | decd5f45 | Iustin Pop | raise errors.BlockDeviceError("Block device '%s' is not set up" % |
446 | decd5f45 | Iustin Pop | str(swap_device))
|
447 | decd5f45 | Iustin Pop | real_swap_dev.Open() |
448 | decd5f45 | Iustin Pop | |
449 | decd5f45 | Iustin Pop | logfile = "%s/rename-%s-%s-%s-%d.log" % (constants.LOG_OS_DIR, instance.os,
|
450 | decd5f45 | Iustin Pop | old_name, |
451 | decd5f45 | Iustin Pop | instance.name, int(time.time()))
|
452 | decd5f45 | Iustin Pop | if not os.path.exists(constants.LOG_OS_DIR): |
453 | decd5f45 | Iustin Pop | os.mkdir(constants.LOG_OS_DIR, 0750)
|
454 | decd5f45 | Iustin Pop | |
455 | decd5f45 | Iustin Pop | command = utils.BuildShellCmd("cd %s && %s -o %s -n %s -b %s -s %s &>%s",
|
456 | decd5f45 | Iustin Pop | inst_os.path, script, old_name, instance.name, |
457 | decd5f45 | Iustin Pop | real_os_dev.dev_path, real_swap_dev.dev_path, |
458 | decd5f45 | Iustin Pop | logfile) |
459 | a8083063 | Iustin Pop | |
460 | a8083063 | Iustin Pop | result = utils.RunCmd(command) |
461 | a8083063 | Iustin Pop | |
462 | a8083063 | Iustin Pop | if result.failed:
|
463 | a8083063 | Iustin Pop | logger.Error("os create command '%s' returned error: %s"
|
464 | a8083063 | Iustin Pop | " output: %s" %
|
465 | a8083063 | Iustin Pop | (command, result.fail_reason, result.output)) |
466 | a8083063 | Iustin Pop | return False |
467 | a8083063 | Iustin Pop | |
468 | a8083063 | Iustin Pop | return True |
469 | a8083063 | Iustin Pop | |
470 | a8083063 | Iustin Pop | |
471 | a8083063 | Iustin Pop | def _GetVGInfo(vg_name): |
472 | a8083063 | Iustin Pop | """Get informations about the volume group.
|
473 | a8083063 | Iustin Pop |
|
474 | a8083063 | Iustin Pop | Args:
|
475 | a8083063 | Iustin Pop | vg_name: the volume group
|
476 | a8083063 | Iustin Pop |
|
477 | a8083063 | Iustin Pop | Returns:
|
478 | a8083063 | Iustin Pop | { 'vg_size' : xxx, 'vg_free' : xxx, 'pv_count' : xxx }
|
479 | a8083063 | Iustin Pop | where
|
480 | a8083063 | Iustin Pop | vg_size is the total size of the volume group in MiB
|
481 | a8083063 | Iustin Pop | vg_free is the free size of the volume group in MiB
|
482 | a8083063 | Iustin Pop | pv_count are the number of physical disks in that vg
|
483 | a8083063 | Iustin Pop |
|
484 | a8083063 | Iustin Pop | """
|
485 | a8083063 | Iustin Pop | retval = utils.RunCmd(["vgs", "-ovg_size,vg_free,pv_count", "--noheadings", |
486 | a8083063 | Iustin Pop | "--nosuffix", "--units=m", "--separator=:", vg_name]) |
487 | a8083063 | Iustin Pop | |
488 | a8083063 | Iustin Pop | if retval.failed:
|
489 | a8083063 | Iustin Pop | errmsg = "volume group %s not present" % vg_name
|
490 | a8083063 | Iustin Pop | logger.Error(errmsg) |
491 | a8083063 | Iustin Pop | raise errors.LVMError(errmsg)
|
492 | a8083063 | Iustin Pop | valarr = retval.stdout.strip().split(':')
|
493 | a8083063 | Iustin Pop | retdic = { |
494 | a8083063 | Iustin Pop | "vg_size": int(round(float(valarr[0]), 0)), |
495 | a8083063 | Iustin Pop | "vg_free": int(round(float(valarr[1]), 0)), |
496 | a8083063 | Iustin Pop | "pv_count": int(valarr[2]), |
497 | a8083063 | Iustin Pop | } |
498 | a8083063 | Iustin Pop | return retdic
|
499 | a8083063 | Iustin Pop | |
500 | a8083063 | Iustin Pop | |
501 | a8083063 | Iustin Pop | def _GatherBlockDevs(instance): |
502 | a8083063 | Iustin Pop | """Set up an instance's block device(s).
|
503 | a8083063 | Iustin Pop |
|
504 | a8083063 | Iustin Pop | This is run on the primary node at instance startup. The block
|
505 | a8083063 | Iustin Pop | devices must be already assembled.
|
506 | a8083063 | Iustin Pop |
|
507 | a8083063 | Iustin Pop | """
|
508 | a8083063 | Iustin Pop | block_devices = [] |
509 | a8083063 | Iustin Pop | for disk in instance.disks: |
510 | a8083063 | Iustin Pop | device = _RecursiveFindBD(disk) |
511 | a8083063 | Iustin Pop | if device is None: |
512 | a8083063 | Iustin Pop | raise errors.BlockDeviceError("Block device '%s' is not set up." % |
513 | a8083063 | Iustin Pop | str(disk))
|
514 | a8083063 | Iustin Pop | device.Open() |
515 | a8083063 | Iustin Pop | block_devices.append((disk, device)) |
516 | a8083063 | Iustin Pop | return block_devices
|
517 | a8083063 | Iustin Pop | |
518 | a8083063 | Iustin Pop | |
519 | a8083063 | Iustin Pop | def StartInstance(instance, extra_args): |
520 | a8083063 | Iustin Pop | """Start an instance.
|
521 | a8083063 | Iustin Pop |
|
522 | a8083063 | Iustin Pop | Args:
|
523 | a8083063 | Iustin Pop | instance - name of instance to start.
|
524 | a8083063 | Iustin Pop |
|
525 | 098c0958 | Michael Hanselmann | """
|
526 | a8083063 | Iustin Pop | running_instances = GetInstanceList() |
527 | a8083063 | Iustin Pop | |
528 | a8083063 | Iustin Pop | if instance.name in running_instances: |
529 | a8083063 | Iustin Pop | return True |
530 | a8083063 | Iustin Pop | |
531 | a8083063 | Iustin Pop | block_devices = _GatherBlockDevs(instance) |
532 | a8083063 | Iustin Pop | hyper = hypervisor.GetHypervisor() |
533 | a8083063 | Iustin Pop | |
534 | a8083063 | Iustin Pop | try:
|
535 | a8083063 | Iustin Pop | hyper.StartInstance(instance, block_devices, extra_args) |
536 | a8083063 | Iustin Pop | except errors.HypervisorError, err:
|
537 | a8083063 | Iustin Pop | logger.Error("Failed to start instance: %s" % err)
|
538 | a8083063 | Iustin Pop | return False |
539 | a8083063 | Iustin Pop | |
540 | a8083063 | Iustin Pop | return True |
541 | a8083063 | Iustin Pop | |
542 | a8083063 | Iustin Pop | |
543 | a8083063 | Iustin Pop | def ShutdownInstance(instance): |
544 | a8083063 | Iustin Pop | """Shut an instance down.
|
545 | a8083063 | Iustin Pop |
|
546 | a8083063 | Iustin Pop | Args:
|
547 | a8083063 | Iustin Pop | instance - name of instance to shutdown.
|
548 | a8083063 | Iustin Pop |
|
549 | 098c0958 | Michael Hanselmann | """
|
550 | a8083063 | Iustin Pop | running_instances = GetInstanceList() |
551 | a8083063 | Iustin Pop | |
552 | a8083063 | Iustin Pop | if instance.name not in running_instances: |
553 | a8083063 | Iustin Pop | return True |
554 | a8083063 | Iustin Pop | |
555 | a8083063 | Iustin Pop | hyper = hypervisor.GetHypervisor() |
556 | a8083063 | Iustin Pop | try:
|
557 | a8083063 | Iustin Pop | hyper.StopInstance(instance) |
558 | a8083063 | Iustin Pop | except errors.HypervisorError, err:
|
559 | a8083063 | Iustin Pop | logger.Error("Failed to stop instance: %s" % err)
|
560 | a8083063 | Iustin Pop | return False |
561 | a8083063 | Iustin Pop | |
562 | a8083063 | Iustin Pop | # test every 10secs for 2min
|
563 | a8083063 | Iustin Pop | shutdown_ok = False
|
564 | a8083063 | Iustin Pop | |
565 | a8083063 | Iustin Pop | time.sleep(1)
|
566 | a8083063 | Iustin Pop | for dummy in range(11): |
567 | a8083063 | Iustin Pop | if instance.name not in GetInstanceList(): |
568 | a8083063 | Iustin Pop | break
|
569 | a8083063 | Iustin Pop | time.sleep(10)
|
570 | a8083063 | Iustin Pop | else:
|
571 | a8083063 | Iustin Pop | # the shutdown did not succeed
|
572 | a8083063 | Iustin Pop | logger.Error("shutdown of '%s' unsuccessful, using destroy" % instance)
|
573 | a8083063 | Iustin Pop | |
574 | a8083063 | Iustin Pop | try:
|
575 | a8083063 | Iustin Pop | hyper.StopInstance(instance, force=True)
|
576 | a8083063 | Iustin Pop | except errors.HypervisorError, err:
|
577 | a8083063 | Iustin Pop | logger.Error("Failed to stop instance: %s" % err)
|
578 | a8083063 | Iustin Pop | return False |
579 | a8083063 | Iustin Pop | |
580 | a8083063 | Iustin Pop | time.sleep(1)
|
581 | a8083063 | Iustin Pop | if instance.name in GetInstanceList(): |
582 | a8083063 | Iustin Pop | logger.Error("could not shutdown instance '%s' even by destroy")
|
583 | a8083063 | Iustin Pop | return False |
584 | a8083063 | Iustin Pop | |
585 | a8083063 | Iustin Pop | return True |
586 | a8083063 | Iustin Pop | |
587 | a8083063 | Iustin Pop | |
588 | 007a2f3e | Alexander Schreiber | def RebootInstance(instance, reboot_type, extra_args): |
589 | 007a2f3e | Alexander Schreiber | """Reboot an instance.
|
590 | 007a2f3e | Alexander Schreiber |
|
591 | 007a2f3e | Alexander Schreiber | Args:
|
592 | 007a2f3e | Alexander Schreiber | instance - name of instance to reboot
|
593 | 007a2f3e | Alexander Schreiber | reboot_type - how to reboot [soft,hard,full]
|
594 | 007a2f3e | Alexander Schreiber |
|
595 | 007a2f3e | Alexander Schreiber | """
|
596 | 007a2f3e | Alexander Schreiber | running_instances = GetInstanceList() |
597 | 007a2f3e | Alexander Schreiber | |
598 | 007a2f3e | Alexander Schreiber | if instance.name not in running_instances: |
599 | 007a2f3e | Alexander Schreiber | logger.Error("Cannot reboot instance that is not running")
|
600 | 007a2f3e | Alexander Schreiber | return False |
601 | 007a2f3e | Alexander Schreiber | |
602 | 007a2f3e | Alexander Schreiber | hyper = hypervisor.GetHypervisor() |
603 | 007a2f3e | Alexander Schreiber | if reboot_type == constants.INSTANCE_REBOOT_SOFT:
|
604 | 007a2f3e | Alexander Schreiber | try:
|
605 | 007a2f3e | Alexander Schreiber | hyper.RebootInstance(instance) |
606 | 007a2f3e | Alexander Schreiber | except errors.HypervisorError, err:
|
607 | 007a2f3e | Alexander Schreiber | logger.Error("Failed to soft reboot instance: %s" % err)
|
608 | 007a2f3e | Alexander Schreiber | return False |
609 | 007a2f3e | Alexander Schreiber | elif reboot_type == constants.INSTANCE_REBOOT_HARD:
|
610 | 007a2f3e | Alexander Schreiber | try:
|
611 | 007a2f3e | Alexander Schreiber | ShutdownInstance(instance) |
612 | 007a2f3e | Alexander Schreiber | StartInstance(instance, extra_args) |
613 | 007a2f3e | Alexander Schreiber | except errors.HypervisorError, err:
|
614 | 007a2f3e | Alexander Schreiber | logger.Error("Failed to hard reboot instance: %s" % err)
|
615 | 007a2f3e | Alexander Schreiber | return False |
616 | 007a2f3e | Alexander Schreiber | else:
|
617 | 007a2f3e | Alexander Schreiber | raise errors.ParameterError("reboot_type invalid") |
618 | 007a2f3e | Alexander Schreiber | |
619 | 007a2f3e | Alexander Schreiber | |
620 | 007a2f3e | Alexander Schreiber | return True |
621 | 007a2f3e | Alexander Schreiber | |
622 | 007a2f3e | Alexander Schreiber | |
623 | a0c3fea1 | Michael Hanselmann | def CreateBlockDevice(disk, size, on_primary, info): |
624 | a8083063 | Iustin Pop | """Creates a block device for an instance.
|
625 | a8083063 | Iustin Pop |
|
626 | a8083063 | Iustin Pop | Args:
|
627 | a8083063 | Iustin Pop | bdev: a ganeti.objects.Disk object
|
628 | a8083063 | Iustin Pop | size: the size of the physical underlying devices
|
629 | a8083063 | Iustin Pop | do_open: if the device should be `Assemble()`-d and
|
630 | a8083063 | Iustin Pop | `Open()`-ed after creation
|
631 | a8083063 | Iustin Pop |
|
632 | a8083063 | Iustin Pop | Returns:
|
633 | a8083063 | Iustin Pop | the new unique_id of the device (this can sometime be
|
634 | a8083063 | Iustin Pop | computed only after creation), or None. On secondary nodes,
|
635 | a8083063 | Iustin Pop | it's not required to return anything.
|
636 | a8083063 | Iustin Pop |
|
637 | a8083063 | Iustin Pop | """
|
638 | a8083063 | Iustin Pop | clist = [] |
639 | a8083063 | Iustin Pop | if disk.children:
|
640 | a8083063 | Iustin Pop | for child in disk.children: |
641 | a8083063 | Iustin Pop | crdev = _RecursiveAssembleBD(child, on_primary) |
642 | a8083063 | Iustin Pop | if on_primary or disk.AssembleOnSecondary(): |
643 | a8083063 | Iustin Pop | # we need the children open in case the device itself has to
|
644 | a8083063 | Iustin Pop | # be assembled
|
645 | a8083063 | Iustin Pop | crdev.Open() |
646 | a8083063 | Iustin Pop | else:
|
647 | a8083063 | Iustin Pop | crdev.Close() |
648 | a8083063 | Iustin Pop | clist.append(crdev) |
649 | a8083063 | Iustin Pop | try:
|
650 | a8083063 | Iustin Pop | device = bdev.FindDevice(disk.dev_type, disk.physical_id, clist) |
651 | a8083063 | Iustin Pop | if device is not None: |
652 | a8083063 | Iustin Pop | logger.Info("removing existing device %s" % disk)
|
653 | a8083063 | Iustin Pop | device.Remove() |
654 | a8083063 | Iustin Pop | except errors.BlockDeviceError, err:
|
655 | a8083063 | Iustin Pop | pass
|
656 | a8083063 | Iustin Pop | |
657 | a8083063 | Iustin Pop | device = bdev.Create(disk.dev_type, disk.physical_id, |
658 | a8083063 | Iustin Pop | clist, size) |
659 | a8083063 | Iustin Pop | if device is None: |
660 | a8083063 | Iustin Pop | raise ValueError("Can't create child device for %s, %s" % |
661 | a8083063 | Iustin Pop | (disk, size)) |
662 | a8083063 | Iustin Pop | if on_primary or disk.AssembleOnSecondary(): |
663 | a8083063 | Iustin Pop | device.Assemble() |
664 | e31c43f7 | Michael Hanselmann | device.SetSyncSpeed(constants.SYNC_SPEED) |
665 | a8083063 | Iustin Pop | if on_primary or disk.OpenOnSecondary(): |
666 | a8083063 | Iustin Pop | device.Open(force=True)
|
667 | a0c3fea1 | Michael Hanselmann | |
668 | a0c3fea1 | Michael Hanselmann | device.SetInfo(info) |
669 | a0c3fea1 | Michael Hanselmann | |
670 | a8083063 | Iustin Pop | physical_id = device.unique_id |
671 | a8083063 | Iustin Pop | return physical_id
|
672 | a8083063 | Iustin Pop | |
673 | a8083063 | Iustin Pop | |
674 | a8083063 | Iustin Pop | def RemoveBlockDevice(disk): |
675 | a8083063 | Iustin Pop | """Remove a block device.
|
676 | a8083063 | Iustin Pop |
|
677 | a8083063 | Iustin Pop | This is intended to be called recursively.
|
678 | a8083063 | Iustin Pop |
|
679 | a8083063 | Iustin Pop | """
|
680 | a8083063 | Iustin Pop | try:
|
681 | a8083063 | Iustin Pop | # since we are removing the device, allow a partial match
|
682 | a8083063 | Iustin Pop | # this allows removal of broken mirrors
|
683 | a8083063 | Iustin Pop | rdev = _RecursiveFindBD(disk, allow_partial=True)
|
684 | a8083063 | Iustin Pop | except errors.BlockDeviceError, err:
|
685 | a8083063 | Iustin Pop | # probably can't attach
|
686 | a8083063 | Iustin Pop | logger.Info("Can't attach to device %s in remove" % disk)
|
687 | a8083063 | Iustin Pop | rdev = None
|
688 | a8083063 | Iustin Pop | if rdev is not None: |
689 | a8083063 | Iustin Pop | result = rdev.Remove() |
690 | a8083063 | Iustin Pop | else:
|
691 | a8083063 | Iustin Pop | result = True
|
692 | a8083063 | Iustin Pop | if disk.children:
|
693 | a8083063 | Iustin Pop | for child in disk.children: |
694 | a8083063 | Iustin Pop | result = result and RemoveBlockDevice(child)
|
695 | a8083063 | Iustin Pop | return result
|
696 | a8083063 | Iustin Pop | |
697 | a8083063 | Iustin Pop | |
698 | a8083063 | Iustin Pop | def _RecursiveAssembleBD(disk, as_primary): |
699 | a8083063 | Iustin Pop | """Activate a block device for an instance.
|
700 | a8083063 | Iustin Pop |
|
701 | a8083063 | Iustin Pop | This is run on the primary and secondary nodes for an instance.
|
702 | a8083063 | Iustin Pop |
|
703 | a8083063 | Iustin Pop | This function is called recursively.
|
704 | a8083063 | Iustin Pop |
|
705 | a8083063 | Iustin Pop | Args:
|
706 | a8083063 | Iustin Pop | disk: a objects.Disk object
|
707 | a8083063 | Iustin Pop | as_primary: if we should make the block device read/write
|
708 | a8083063 | Iustin Pop |
|
709 | a8083063 | Iustin Pop | Returns:
|
710 | a8083063 | Iustin Pop | the assembled device or None (in case no device was assembled)
|
711 | a8083063 | Iustin Pop |
|
712 | a8083063 | Iustin Pop | If the assembly is not successful, an exception is raised.
|
713 | a8083063 | Iustin Pop |
|
714 | a8083063 | Iustin Pop | """
|
715 | a8083063 | Iustin Pop | children = [] |
716 | a8083063 | Iustin Pop | if disk.children:
|
717 | a8083063 | Iustin Pop | for chld_disk in disk.children: |
718 | a8083063 | Iustin Pop | children.append(_RecursiveAssembleBD(chld_disk, as_primary)) |
719 | a8083063 | Iustin Pop | |
720 | a8083063 | Iustin Pop | if as_primary or disk.AssembleOnSecondary(): |
721 | a8083063 | Iustin Pop | r_dev = bdev.AttachOrAssemble(disk.dev_type, disk.physical_id, children) |
722 | e31c43f7 | Michael Hanselmann | r_dev.SetSyncSpeed(constants.SYNC_SPEED) |
723 | a8083063 | Iustin Pop | result = r_dev |
724 | a8083063 | Iustin Pop | if as_primary or disk.OpenOnSecondary(): |
725 | a8083063 | Iustin Pop | r_dev.Open() |
726 | a8083063 | Iustin Pop | else:
|
727 | a8083063 | Iustin Pop | r_dev.Close() |
728 | a8083063 | Iustin Pop | else:
|
729 | a8083063 | Iustin Pop | result = True
|
730 | a8083063 | Iustin Pop | return result
|
731 | a8083063 | Iustin Pop | |
732 | a8083063 | Iustin Pop | |
733 | a8083063 | Iustin Pop | def AssembleBlockDevice(disk, as_primary): |
734 | a8083063 | Iustin Pop | """Activate a block device for an instance.
|
735 | a8083063 | Iustin Pop |
|
736 | a8083063 | Iustin Pop | This is a wrapper over _RecursiveAssembleBD.
|
737 | a8083063 | Iustin Pop |
|
738 | a8083063 | Iustin Pop | Returns:
|
739 | a8083063 | Iustin Pop | a /dev path for primary nodes
|
740 | a8083063 | Iustin Pop | True for secondary nodes
|
741 | a8083063 | Iustin Pop |
|
742 | a8083063 | Iustin Pop | """
|
743 | a8083063 | Iustin Pop | result = _RecursiveAssembleBD(disk, as_primary) |
744 | a8083063 | Iustin Pop | if isinstance(result, bdev.BlockDev): |
745 | a8083063 | Iustin Pop | result = result.dev_path |
746 | a8083063 | Iustin Pop | return result
|
747 | a8083063 | Iustin Pop | |
748 | a8083063 | Iustin Pop | |
749 | a8083063 | Iustin Pop | def ShutdownBlockDevice(disk): |
750 | a8083063 | Iustin Pop | """Shut down a block device.
|
751 | a8083063 | Iustin Pop |
|
752 | a8083063 | Iustin Pop | First, if the device is assembled (can `Attach()`), then the device
|
753 | a8083063 | Iustin Pop | is shutdown. Then the children of the device are shutdown.
|
754 | a8083063 | Iustin Pop |
|
755 | a8083063 | Iustin Pop | This function is called recursively. Note that we don't cache the
|
756 | a8083063 | Iustin Pop | children or such, as oppossed to assemble, shutdown of different
|
757 | a8083063 | Iustin Pop | devices doesn't require that the upper device was active.
|
758 | a8083063 | Iustin Pop |
|
759 | a8083063 | Iustin Pop | """
|
760 | a8083063 | Iustin Pop | r_dev = _RecursiveFindBD(disk) |
761 | a8083063 | Iustin Pop | if r_dev is not None: |
762 | a8083063 | Iustin Pop | result = r_dev.Shutdown() |
763 | a8083063 | Iustin Pop | else:
|
764 | a8083063 | Iustin Pop | result = True
|
765 | a8083063 | Iustin Pop | if disk.children:
|
766 | a8083063 | Iustin Pop | for child in disk.children: |
767 | a8083063 | Iustin Pop | result = result and ShutdownBlockDevice(child)
|
768 | a8083063 | Iustin Pop | return result
|
769 | a8083063 | Iustin Pop | |
770 | a8083063 | Iustin Pop | |
771 | 153d9724 | Iustin Pop | def MirrorAddChildren(parent_cdev, new_cdevs): |
772 | 153d9724 | Iustin Pop | """Extend a mirrored block device.
|
773 | a8083063 | Iustin Pop |
|
774 | a8083063 | Iustin Pop | """
|
775 | 153d9724 | Iustin Pop | parent_bdev = _RecursiveFindBD(parent_cdev, allow_partial=True)
|
776 | 153d9724 | Iustin Pop | if parent_bdev is None: |
777 | 153d9724 | Iustin Pop | logger.Error("Can't find parent device")
|
778 | a8083063 | Iustin Pop | return False |
779 | 153d9724 | Iustin Pop | new_bdevs = [_RecursiveFindBD(disk) for disk in new_cdevs] |
780 | 153d9724 | Iustin Pop | if new_bdevs.count(None) > 0: |
781 | a9e0c397 | Iustin Pop | logger.Error("Can't find new device(s) to add: %s:%s" %
|
782 | a9e0c397 | Iustin Pop | (new_bdevs, new_cdevs)) |
783 | a8083063 | Iustin Pop | return False |
784 | 153d9724 | Iustin Pop | parent_bdev.AddChildren(new_bdevs) |
785 | a8083063 | Iustin Pop | return True |
786 | a8083063 | Iustin Pop | |
787 | a8083063 | Iustin Pop | |
788 | 153d9724 | Iustin Pop | def MirrorRemoveChildren(parent_cdev, new_cdevs): |
789 | 153d9724 | Iustin Pop | """Shrink a mirrored block device.
|
790 | a8083063 | Iustin Pop |
|
791 | a8083063 | Iustin Pop | """
|
792 | 153d9724 | Iustin Pop | parent_bdev = _RecursiveFindBD(parent_cdev) |
793 | 153d9724 | Iustin Pop | if parent_bdev is None: |
794 | a9e0c397 | Iustin Pop | logger.Error("Can't find parent in remove children: %s" % parent_cdev)
|
795 | a8083063 | Iustin Pop | return False |
796 | 153d9724 | Iustin Pop | new_bdevs = [_RecursiveFindBD(disk) for disk in new_cdevs] |
797 | 153d9724 | Iustin Pop | if new_bdevs.count(None) > 0: |
798 | 233d06c5 | Iustin Pop | logger.Error("Can't find some devices while removing children: %s %s" %
|
799 | a9e0c397 | Iustin Pop | (new_cdevs, new_bdevs)) |
800 | a8083063 | Iustin Pop | return False |
801 | 153d9724 | Iustin Pop | parent_bdev.RemoveChildren(new_bdevs) |
802 | a8083063 | Iustin Pop | return True |
803 | a8083063 | Iustin Pop | |
804 | a8083063 | Iustin Pop | |
805 | a8083063 | Iustin Pop | def GetMirrorStatus(disks): |
806 | a8083063 | Iustin Pop | """Get the mirroring status of a list of devices.
|
807 | a8083063 | Iustin Pop |
|
808 | a8083063 | Iustin Pop | Args:
|
809 | a8083063 | Iustin Pop | disks: list of `objects.Disk`
|
810 | a8083063 | Iustin Pop |
|
811 | a8083063 | Iustin Pop | Returns:
|
812 | a8083063 | Iustin Pop | list of (mirror_done, estimated_time) tuples, which
|
813 | a8083063 | Iustin Pop | are the result of bdev.BlockDevice.CombinedSyncStatus()
|
814 | a8083063 | Iustin Pop |
|
815 | a8083063 | Iustin Pop | """
|
816 | a8083063 | Iustin Pop | stats = [] |
817 | a8083063 | Iustin Pop | for dsk in disks: |
818 | a8083063 | Iustin Pop | rbd = _RecursiveFindBD(dsk) |
819 | a8083063 | Iustin Pop | if rbd is None: |
820 | 3ecf6786 | Iustin Pop | raise errors.BlockDeviceError("Can't find device %s" % str(dsk)) |
821 | a8083063 | Iustin Pop | stats.append(rbd.CombinedSyncStatus()) |
822 | a8083063 | Iustin Pop | return stats
|
823 | a8083063 | Iustin Pop | |
824 | a8083063 | Iustin Pop | |
825 | a8083063 | Iustin Pop | def _RecursiveFindBD(disk, allow_partial=False): |
826 | a8083063 | Iustin Pop | """Check if a device is activated.
|
827 | a8083063 | Iustin Pop |
|
828 | a8083063 | Iustin Pop | If so, return informations about the real device.
|
829 | a8083063 | Iustin Pop |
|
830 | a8083063 | Iustin Pop | Args:
|
831 | a8083063 | Iustin Pop | disk: the objects.Disk instance
|
832 | a8083063 | Iustin Pop | allow_partial: don't abort the find if a child of the
|
833 | a8083063 | Iustin Pop | device can't be found; this is intended to be
|
834 | a8083063 | Iustin Pop | used when repairing mirrors
|
835 | a8083063 | Iustin Pop |
|
836 | a8083063 | Iustin Pop | Returns:
|
837 | a8083063 | Iustin Pop | None if the device can't be found
|
838 | a8083063 | Iustin Pop | otherwise the device instance
|
839 | a8083063 | Iustin Pop |
|
840 | a8083063 | Iustin Pop | """
|
841 | a8083063 | Iustin Pop | children = [] |
842 | a8083063 | Iustin Pop | if disk.children:
|
843 | a8083063 | Iustin Pop | for chdisk in disk.children: |
844 | a8083063 | Iustin Pop | children.append(_RecursiveFindBD(chdisk)) |
845 | a8083063 | Iustin Pop | |
846 | a8083063 | Iustin Pop | return bdev.FindDevice(disk.dev_type, disk.physical_id, children)
|
847 | a8083063 | Iustin Pop | |
848 | a8083063 | Iustin Pop | |
849 | a8083063 | Iustin Pop | def FindBlockDevice(disk): |
850 | a8083063 | Iustin Pop | """Check if a device is activated.
|
851 | a8083063 | Iustin Pop |
|
852 | a8083063 | Iustin Pop | If so, return informations about the real device.
|
853 | a8083063 | Iustin Pop |
|
854 | a8083063 | Iustin Pop | Args:
|
855 | a8083063 | Iustin Pop | disk: the objects.Disk instance
|
856 | a8083063 | Iustin Pop | Returns:
|
857 | a8083063 | Iustin Pop | None if the device can't be found
|
858 | a8083063 | Iustin Pop | (device_path, major, minor, sync_percent, estimated_time, is_degraded)
|
859 | a8083063 | Iustin Pop |
|
860 | a8083063 | Iustin Pop | """
|
861 | a8083063 | Iustin Pop | rbd = _RecursiveFindBD(disk) |
862 | a8083063 | Iustin Pop | if rbd is None: |
863 | a8083063 | Iustin Pop | return rbd
|
864 | a8083063 | Iustin Pop | sync_p, est_t, is_degr = rbd.GetSyncStatus() |
865 | a8083063 | Iustin Pop | return rbd.dev_path, rbd.major, rbd.minor, sync_p, est_t, is_degr
|
866 | a8083063 | Iustin Pop | |
867 | a8083063 | Iustin Pop | |
868 | a8083063 | Iustin Pop | def UploadFile(file_name, data, mode, uid, gid, atime, mtime): |
869 | a8083063 | Iustin Pop | """Write a file to the filesystem.
|
870 | a8083063 | Iustin Pop |
|
871 | a8083063 | Iustin Pop | This allows the master to overwrite(!) a file. It will only perform
|
872 | a8083063 | Iustin Pop | the operation if the file belongs to a list of configuration files.
|
873 | a8083063 | Iustin Pop |
|
874 | a8083063 | Iustin Pop | """
|
875 | a8083063 | Iustin Pop | if not os.path.isabs(file_name): |
876 | a8083063 | Iustin Pop | logger.Error("Filename passed to UploadFile is not absolute: '%s'" %
|
877 | a8083063 | Iustin Pop | file_name) |
878 | a8083063 | Iustin Pop | return False |
879 | a8083063 | Iustin Pop | |
880 | 880478f8 | Iustin Pop | allowed_files = [constants.CLUSTER_CONF_FILE, "/etc/hosts",
|
881 | 82122173 | Iustin Pop | constants.SSH_KNOWN_HOSTS_FILE] |
882 | 880478f8 | Iustin Pop | allowed_files.extend(ssconf.SimpleStore().GetFileList()) |
883 | 880478f8 | Iustin Pop | if file_name not in allowed_files: |
884 | a8083063 | Iustin Pop | logger.Error("Filename passed to UploadFile not in allowed"
|
885 | a8083063 | Iustin Pop | " upload targets: '%s'" % file_name)
|
886 | a8083063 | Iustin Pop | return False |
887 | a8083063 | Iustin Pop | |
888 | a8083063 | Iustin Pop | dir_name, small_name = os.path.split(file_name) |
889 | a8083063 | Iustin Pop | fd, new_name = tempfile.mkstemp('.new', small_name, dir_name)
|
890 | a8083063 | Iustin Pop | # here we need to make sure we remove the temp file, if any error
|
891 | a8083063 | Iustin Pop | # leaves it in place
|
892 | a8083063 | Iustin Pop | try:
|
893 | a8083063 | Iustin Pop | os.chown(new_name, uid, gid) |
894 | a8083063 | Iustin Pop | os.chmod(new_name, mode) |
895 | a8083063 | Iustin Pop | os.write(fd, data) |
896 | a8083063 | Iustin Pop | os.fsync(fd) |
897 | a8083063 | Iustin Pop | os.utime(new_name, (atime, mtime)) |
898 | a8083063 | Iustin Pop | os.rename(new_name, file_name) |
899 | a8083063 | Iustin Pop | finally:
|
900 | a8083063 | Iustin Pop | os.close(fd) |
901 | a8083063 | Iustin Pop | utils.RemoveFile(new_name) |
902 | a8083063 | Iustin Pop | return True |
903 | a8083063 | Iustin Pop | |
904 | 386b57af | Iustin Pop | |
905 | a8083063 | Iustin Pop | def _ErrnoOrStr(err): |
906 | a8083063 | Iustin Pop | """Format an EnvironmentError exception.
|
907 | a8083063 | Iustin Pop |
|
908 | a8083063 | Iustin Pop | If the `err` argument has an errno attribute, it will be looked up
|
909 | a8083063 | Iustin Pop | and converted into a textual EXXXX description. Otherwise the string
|
910 | a8083063 | Iustin Pop | representation of the error will be returned.
|
911 | a8083063 | Iustin Pop |
|
912 | a8083063 | Iustin Pop | """
|
913 | a8083063 | Iustin Pop | if hasattr(err, 'errno'): |
914 | a8083063 | Iustin Pop | detail = errno.errorcode[err.errno] |
915 | a8083063 | Iustin Pop | else:
|
916 | a8083063 | Iustin Pop | detail = str(err)
|
917 | a8083063 | Iustin Pop | return detail
|
918 | a8083063 | Iustin Pop | |
919 | 56bcd3f4 | Guido Trotter | def _OSSearch(name, search_path=None): |
920 | 56bcd3f4 | Guido Trotter | """Search for OSes with the given name in the search_path.
|
921 | 56bcd3f4 | Guido Trotter |
|
922 | 56bcd3f4 | Guido Trotter | Args:
|
923 | 56bcd3f4 | Guido Trotter | name: The name of the OS to look for
|
924 | 56bcd3f4 | Guido Trotter | search_path: List of dirs to search (defaults to constants.OS_SEARCH_PATH)
|
925 | 305a7297 | Guido Trotter |
|
926 | 56bcd3f4 | Guido Trotter | Returns:
|
927 | 56bcd3f4 | Guido Trotter | The base_dir the OS resides in
|
928 | 56bcd3f4 | Guido Trotter |
|
929 | 56bcd3f4 | Guido Trotter | """
|
930 | 56bcd3f4 | Guido Trotter | |
931 | 56bcd3f4 | Guido Trotter | if search_path is None: |
932 | 56bcd3f4 | Guido Trotter | search_path = constants.OS_SEARCH_PATH |
933 | 56bcd3f4 | Guido Trotter | |
934 | 56bcd3f4 | Guido Trotter | for dir in search_path: |
935 | 56bcd3f4 | Guido Trotter | t_os_dir = os.path.sep.join([dir, name])
|
936 | 56bcd3f4 | Guido Trotter | if os.path.isdir(t_os_dir):
|
937 | 56bcd3f4 | Guido Trotter | return dir |
938 | 56bcd3f4 | Guido Trotter | |
939 | 56bcd3f4 | Guido Trotter | return None |
940 | a8083063 | Iustin Pop | |
941 | c26dabd7 | Guido Trotter | def _OSOndiskVersion(name, os_dir): |
942 | 2f8598a5 | Alexander Schreiber | """Compute and return the API version of a given OS.
|
943 | a8083063 | Iustin Pop |
|
944 | 2f8598a5 | Alexander Schreiber | This function will try to read the API version of the os given by
|
945 | 7c3d51d4 | Guido Trotter | the 'name' parameter and residing in the 'os_dir' directory.
|
946 | 7c3d51d4 | Guido Trotter |
|
947 | 7c3d51d4 | Guido Trotter | Return value will be either an integer denoting the version or None in the
|
948 | 7c3d51d4 | Guido Trotter | case when this is not a valid OS name.
|
949 | a8083063 | Iustin Pop |
|
950 | a8083063 | Iustin Pop | """
|
951 | a8083063 | Iustin Pop | |
952 | a8083063 | Iustin Pop | api_file = os.path.sep.join([os_dir, "ganeti_api_version"])
|
953 | a8083063 | Iustin Pop | |
954 | a8083063 | Iustin Pop | try:
|
955 | a8083063 | Iustin Pop | st = os.stat(api_file) |
956 | a8083063 | Iustin Pop | except EnvironmentError, err: |
957 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir, "'ganeti_api_version' file not" |
958 | 3ecf6786 | Iustin Pop | " found (%s)" % _ErrnoOrStr(err))
|
959 | a8083063 | Iustin Pop | |
960 | a8083063 | Iustin Pop | if not stat.S_ISREG(stat.S_IFMT(st.st_mode)): |
961 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir, "'ganeti_api_version' file is not" |
962 | 3ecf6786 | Iustin Pop | " a regular file")
|
963 | a8083063 | Iustin Pop | |
964 | a8083063 | Iustin Pop | try:
|
965 | a8083063 | Iustin Pop | f = open(api_file)
|
966 | a8083063 | Iustin Pop | try:
|
967 | a8083063 | Iustin Pop | api_version = f.read(256)
|
968 | a8083063 | Iustin Pop | finally:
|
969 | a8083063 | Iustin Pop | f.close() |
970 | a8083063 | Iustin Pop | except EnvironmentError, err: |
971 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir, "error while reading the" |
972 | 3ecf6786 | Iustin Pop | " API version (%s)" % _ErrnoOrStr(err))
|
973 | a8083063 | Iustin Pop | |
974 | a8083063 | Iustin Pop | api_version = api_version.strip() |
975 | a8083063 | Iustin Pop | try:
|
976 | a8083063 | Iustin Pop | api_version = int(api_version)
|
977 | a8083063 | Iustin Pop | except (TypeError, ValueError), err: |
978 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir,
|
979 | 305a7297 | Guido Trotter | "API version is not integer (%s)" % str(err)) |
980 | a8083063 | Iustin Pop | |
981 | a8083063 | Iustin Pop | return api_version
|
982 | a8083063 | Iustin Pop | |
983 | 386b57af | Iustin Pop | |
984 | 7c3d51d4 | Guido Trotter | def DiagnoseOS(top_dirs=None): |
985 | a8083063 | Iustin Pop | """Compute the validity for all OSes.
|
986 | a8083063 | Iustin Pop |
|
987 | 7c3d51d4 | Guido Trotter | For each name in all the given top directories (if not given defaults i
|
988 | 7c3d51d4 | Guido Trotter | to constants.OS_SEARCH_PATH it will return an object. If this is a valid
|
989 | a8083063 | Iustin Pop | os, the object will be an instance of the object.OS class. If not,
|
990 | a8083063 | Iustin Pop | it will be an instance of errors.InvalidOS and this signifies that
|
991 | a8083063 | Iustin Pop | this name does not correspond to a valid OS.
|
992 | a8083063 | Iustin Pop |
|
993 | a8083063 | Iustin Pop | Returns:
|
994 | a8083063 | Iustin Pop | list of objects
|
995 | a8083063 | Iustin Pop |
|
996 | a8083063 | Iustin Pop | """
|
997 | 7c3d51d4 | Guido Trotter | if top_dirs is None: |
998 | 7c3d51d4 | Guido Trotter | top_dirs = constants.OS_SEARCH_PATH |
999 | a8083063 | Iustin Pop | |
1000 | a8083063 | Iustin Pop | result = [] |
1001 | 7c3d51d4 | Guido Trotter | for dir in top_dirs: |
1002 | 7c3d51d4 | Guido Trotter | if os.path.isdir(dir): |
1003 | 7c3d51d4 | Guido Trotter | try:
|
1004 | eedbda4b | Michael Hanselmann | f_names = utils.ListVisibleFiles(dir)
|
1005 | 7c3d51d4 | Guido Trotter | except EnvironmentError, err: |
1006 | 7c3d51d4 | Guido Trotter | logger.Error("Can't list the OS directory %s: %s" % (dir,str(err))) |
1007 | 7c3d51d4 | Guido Trotter | break
|
1008 | 7c3d51d4 | Guido Trotter | for name in f_names: |
1009 | 7c3d51d4 | Guido Trotter | try:
|
1010 | 56bcd3f4 | Guido Trotter | os_inst = OSFromDisk(name, base_dir=dir)
|
1011 | 7c3d51d4 | Guido Trotter | result.append(os_inst) |
1012 | 7c3d51d4 | Guido Trotter | except errors.InvalidOS, err:
|
1013 | 7c3d51d4 | Guido Trotter | result.append(err) |
1014 | a8083063 | Iustin Pop | |
1015 | a8083063 | Iustin Pop | return result
|
1016 | a8083063 | Iustin Pop | |
1017 | a8083063 | Iustin Pop | |
1018 | 56bcd3f4 | Guido Trotter | def OSFromDisk(name, base_dir=None): |
1019 | a8083063 | Iustin Pop | """Create an OS instance from disk.
|
1020 | a8083063 | Iustin Pop |
|
1021 | a8083063 | Iustin Pop | This function will return an OS instance if the given name is a
|
1022 | a8083063 | Iustin Pop | valid OS name. Otherwise, it will raise an appropriate
|
1023 | a8083063 | Iustin Pop | `errors.InvalidOS` exception, detailing why this is not a valid
|
1024 | a8083063 | Iustin Pop | OS.
|
1025 | a8083063 | Iustin Pop |
|
1026 | 7c3d51d4 | Guido Trotter | Args:
|
1027 | 7c3d51d4 | Guido Trotter | os_dir: Directory containing the OS scripts. Defaults to a search
|
1028 | 7c3d51d4 | Guido Trotter | in all the OS_SEARCH_PATH directories.
|
1029 | 7c3d51d4 | Guido Trotter |
|
1030 | a8083063 | Iustin Pop | """
|
1031 | 7c3d51d4 | Guido Trotter | |
1032 | 56bcd3f4 | Guido Trotter | if base_dir is None: |
1033 | 56bcd3f4 | Guido Trotter | base_dir = _OSSearch(name) |
1034 | 7c3d51d4 | Guido Trotter | |
1035 | 56bcd3f4 | Guido Trotter | if base_dir is None: |
1036 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, None, "OS dir not found in search path") |
1037 | a8083063 | Iustin Pop | |
1038 | 56bcd3f4 | Guido Trotter | os_dir = os.path.sep.join([base_dir, name]) |
1039 | c26dabd7 | Guido Trotter | api_version = _OSOndiskVersion(name, os_dir) |
1040 | a8083063 | Iustin Pop | |
1041 | a8083063 | Iustin Pop | if api_version != constants.OS_API_VERSION:
|
1042 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir, "API version mismatch" |
1043 | 305a7297 | Guido Trotter | " (found %s want %s)"
|
1044 | 3ecf6786 | Iustin Pop | % (api_version, constants.OS_API_VERSION)) |
1045 | a8083063 | Iustin Pop | |
1046 | a8083063 | Iustin Pop | # OS Scripts dictionary, we will populate it with the actual script names
|
1047 | 386b57af | Iustin Pop | os_scripts = {'create': '', 'export': '', 'import': '', 'rename': ''} |
1048 | a8083063 | Iustin Pop | |
1049 | a8083063 | Iustin Pop | for script in os_scripts: |
1050 | a8083063 | Iustin Pop | os_scripts[script] = os.path.sep.join([os_dir, script]) |
1051 | a8083063 | Iustin Pop | |
1052 | a8083063 | Iustin Pop | try:
|
1053 | a8083063 | Iustin Pop | st = os.stat(os_scripts[script]) |
1054 | a8083063 | Iustin Pop | except EnvironmentError, err: |
1055 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir, "'%s' script missing (%s)" % |
1056 | 3ecf6786 | Iustin Pop | (script, _ErrnoOrStr(err))) |
1057 | a8083063 | Iustin Pop | |
1058 | a8083063 | Iustin Pop | if stat.S_IMODE(st.st_mode) & stat.S_IXUSR != stat.S_IXUSR:
|
1059 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir, "'%s' script not executable" % |
1060 | 305a7297 | Guido Trotter | script) |
1061 | a8083063 | Iustin Pop | |
1062 | a8083063 | Iustin Pop | if not stat.S_ISREG(stat.S_IFMT(st.st_mode)): |
1063 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir, "'%s' is not a regular file" % |
1064 | 305a7297 | Guido Trotter | script) |
1065 | a8083063 | Iustin Pop | |
1066 | a8083063 | Iustin Pop | |
1067 | a8083063 | Iustin Pop | return objects.OS(name=name, path=os_dir,
|
1068 | a8083063 | Iustin Pop | create_script=os_scripts['create'],
|
1069 | a8083063 | Iustin Pop | export_script=os_scripts['export'],
|
1070 | a8083063 | Iustin Pop | import_script=os_scripts['import'],
|
1071 | 386b57af | Iustin Pop | rename_script=os_scripts['rename'],
|
1072 | a8083063 | Iustin Pop | api_version=api_version) |
1073 | a8083063 | Iustin Pop | |
1074 | a8083063 | Iustin Pop | |
1075 | a8083063 | Iustin Pop | def SnapshotBlockDevice(disk): |
1076 | a8083063 | Iustin Pop | """Create a snapshot copy of a block device.
|
1077 | a8083063 | Iustin Pop |
|
1078 | a8083063 | Iustin Pop | This function is called recursively, and the snapshot is actually created
|
1079 | a8083063 | Iustin Pop | just for the leaf lvm backend device.
|
1080 | a8083063 | Iustin Pop |
|
1081 | a8083063 | Iustin Pop | Args:
|
1082 | a8083063 | Iustin Pop | disk: the disk to be snapshotted
|
1083 | a8083063 | Iustin Pop |
|
1084 | a8083063 | Iustin Pop | Returns:
|
1085 | a8083063 | Iustin Pop | a config entry for the actual lvm device snapshotted.
|
1086 | a8083063 | Iustin Pop |
|
1087 | 098c0958 | Michael Hanselmann | """
|
1088 | a8083063 | Iustin Pop | if disk.children:
|
1089 | a8083063 | Iustin Pop | if len(disk.children) == 1: |
1090 | a8083063 | Iustin Pop | # only one child, let's recurse on it
|
1091 | a8083063 | Iustin Pop | return SnapshotBlockDevice(disk.children[0]) |
1092 | a8083063 | Iustin Pop | else:
|
1093 | a8083063 | Iustin Pop | # more than one child, choose one that matches
|
1094 | a8083063 | Iustin Pop | for child in disk.children: |
1095 | a8083063 | Iustin Pop | if child.size == disk.size:
|
1096 | a8083063 | Iustin Pop | # return implies breaking the loop
|
1097 | a8083063 | Iustin Pop | return SnapshotBlockDevice(child)
|
1098 | fe96220b | Iustin Pop | elif disk.dev_type == constants.LD_LV:
|
1099 | a8083063 | Iustin Pop | r_dev = _RecursiveFindBD(disk) |
1100 | a8083063 | Iustin Pop | if r_dev is not None: |
1101 | a8083063 | Iustin Pop | # let's stay on the safe side and ask for the full size, for now
|
1102 | a8083063 | Iustin Pop | return r_dev.Snapshot(disk.size)
|
1103 | a8083063 | Iustin Pop | else:
|
1104 | a8083063 | Iustin Pop | return None |
1105 | a8083063 | Iustin Pop | else:
|
1106 | 3ecf6786 | Iustin Pop | raise errors.ProgrammerError("Cannot snapshot non-lvm block device" |
1107 | 3ecf6786 | Iustin Pop | "'%s' of type '%s'" %
|
1108 | 3ecf6786 | Iustin Pop | (disk.unique_id, disk.dev_type)) |
1109 | a8083063 | Iustin Pop | |
1110 | a8083063 | Iustin Pop | |
1111 | a8083063 | Iustin Pop | def ExportSnapshot(disk, dest_node, instance): |
1112 | a8083063 | Iustin Pop | """Export a block device snapshot to a remote node.
|
1113 | a8083063 | Iustin Pop |
|
1114 | a8083063 | Iustin Pop | Args:
|
1115 | a8083063 | Iustin Pop | disk: the snapshot block device
|
1116 | a8083063 | Iustin Pop | dest_node: the node to send the image to
|
1117 | a8083063 | Iustin Pop | instance: instance being exported
|
1118 | a8083063 | Iustin Pop |
|
1119 | a8083063 | Iustin Pop | Returns:
|
1120 | a8083063 | Iustin Pop | True if successful, False otherwise.
|
1121 | a8083063 | Iustin Pop |
|
1122 | 098c0958 | Michael Hanselmann | """
|
1123 | a8083063 | Iustin Pop | inst_os = OSFromDisk(instance.os) |
1124 | a8083063 | Iustin Pop | export_script = inst_os.export_script |
1125 | a8083063 | Iustin Pop | |
1126 | a8083063 | Iustin Pop | logfile = "%s/exp-%s-%s-%s.log" % (constants.LOG_OS_DIR, inst_os.name,
|
1127 | a8083063 | Iustin Pop | instance.name, int(time.time()))
|
1128 | a8083063 | Iustin Pop | if not os.path.exists(constants.LOG_OS_DIR): |
1129 | a8083063 | Iustin Pop | os.mkdir(constants.LOG_OS_DIR, 0750)
|
1130 | a8083063 | Iustin Pop | |
1131 | a8083063 | Iustin Pop | real_os_dev = _RecursiveFindBD(disk) |
1132 | a8083063 | Iustin Pop | if real_os_dev is None: |
1133 | a8083063 | Iustin Pop | raise errors.BlockDeviceError("Block device '%s' is not set up" % |
1134 | a8083063 | Iustin Pop | str(disk))
|
1135 | a8083063 | Iustin Pop | real_os_dev.Open() |
1136 | a8083063 | Iustin Pop | |
1137 | a8083063 | Iustin Pop | destdir = os.path.join(constants.EXPORT_DIR, instance.name + ".new")
|
1138 | a8083063 | Iustin Pop | destfile = disk.physical_id[1]
|
1139 | a8083063 | Iustin Pop | |
1140 | a8083063 | Iustin Pop | # the target command is built out of three individual commands,
|
1141 | a8083063 | Iustin Pop | # which are joined by pipes; we check each individual command for
|
1142 | a8083063 | Iustin Pop | # valid parameters
|
1143 | a8083063 | Iustin Pop | |
1144 | a8083063 | Iustin Pop | expcmd = utils.BuildShellCmd("cd %s; %s -i %s -b %s 2>%s", inst_os.path,
|
1145 | a8083063 | Iustin Pop | export_script, instance.name, |
1146 | a8083063 | Iustin Pop | real_os_dev.dev_path, logfile) |
1147 | a8083063 | Iustin Pop | |
1148 | a8083063 | Iustin Pop | comprcmd = "gzip"
|
1149 | a8083063 | Iustin Pop | |
1150 | 72f0f7fd | Iustin Pop | destcmd = utils.BuildShellCmd("mkdir -p %s && cat > %s/%s",
|
1151 | 00003458 | Guido Trotter | destdir, destdir, destfile) |
1152 | 7900ed01 | Iustin Pop | remotecmd = ssh.BuildSSHCmd(dest_node, constants.GANETI_RUNAS, destcmd) |
1153 | 72f0f7fd | Iustin Pop | |
1154 | 72f0f7fd | Iustin Pop | |
1155 | a8083063 | Iustin Pop | |
1156 | a8083063 | Iustin Pop | # all commands have been checked, so we're safe to combine them
|
1157 | 72f0f7fd | Iustin Pop | command = '|'.join([expcmd, comprcmd, utils.ShellQuoteArgs(remotecmd)])
|
1158 | a8083063 | Iustin Pop | |
1159 | a8083063 | Iustin Pop | result = utils.RunCmd(command) |
1160 | a8083063 | Iustin Pop | |
1161 | a8083063 | Iustin Pop | if result.failed:
|
1162 | a8083063 | Iustin Pop | logger.Error("os snapshot export command '%s' returned error: %s"
|
1163 | a8083063 | Iustin Pop | " output: %s" %
|
1164 | a8083063 | Iustin Pop | (command, result.fail_reason, result.output)) |
1165 | a8083063 | Iustin Pop | return False |
1166 | a8083063 | Iustin Pop | |
1167 | a8083063 | Iustin Pop | return True |
1168 | a8083063 | Iustin Pop | |
1169 | a8083063 | Iustin Pop | |
1170 | a8083063 | Iustin Pop | def FinalizeExport(instance, snap_disks): |
1171 | a8083063 | Iustin Pop | """Write out the export configuration information.
|
1172 | a8083063 | Iustin Pop |
|
1173 | a8083063 | Iustin Pop | Args:
|
1174 | a8083063 | Iustin Pop | instance: instance configuration
|
1175 | a8083063 | Iustin Pop | snap_disks: snapshot block devices
|
1176 | a8083063 | Iustin Pop |
|
1177 | a8083063 | Iustin Pop | Returns:
|
1178 | a8083063 | Iustin Pop | False in case of error, True otherwise.
|
1179 | a8083063 | Iustin Pop |
|
1180 | 098c0958 | Michael Hanselmann | """
|
1181 | a8083063 | Iustin Pop | destdir = os.path.join(constants.EXPORT_DIR, instance.name + ".new")
|
1182 | a8083063 | Iustin Pop | finaldestdir = os.path.join(constants.EXPORT_DIR, instance.name) |
1183 | a8083063 | Iustin Pop | |
1184 | a8083063 | Iustin Pop | config = objects.SerializableConfigParser() |
1185 | a8083063 | Iustin Pop | |
1186 | a8083063 | Iustin Pop | config.add_section(constants.INISECT_EXP) |
1187 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'version', '0') |
1188 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'timestamp', '%d' % int(time.time())) |
1189 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'source', instance.primary_node)
|
1190 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'os', instance.os)
|
1191 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'compression', 'gzip') |
1192 | a8083063 | Iustin Pop | |
1193 | a8083063 | Iustin Pop | config.add_section(constants.INISECT_INS) |
1194 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'name', instance.name)
|
1195 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'memory', '%d' % instance.memory) |
1196 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'vcpus', '%d' % instance.vcpus) |
1197 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'disk_template', instance.disk_template)
|
1198 | a8083063 | Iustin Pop | for nic_count, nic in enumerate(instance.nics): |
1199 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'nic%d_mac' %
|
1200 | a8083063 | Iustin Pop | nic_count, '%s' % nic.mac)
|
1201 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'nic%d_ip' % nic_count, '%s' % nic.ip) |
1202 | a8083063 | Iustin Pop | # TODO: redundant: on load can read nics until it doesn't exist
|
1203 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'nic_count' , '%d' % nic_count) |
1204 | a8083063 | Iustin Pop | |
1205 | a8083063 | Iustin Pop | for disk_count, disk in enumerate(snap_disks): |
1206 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'disk%d_ivname' % disk_count,
|
1207 | a8083063 | Iustin Pop | ('%s' % disk.iv_name))
|
1208 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'disk%d_dump' % disk_count,
|
1209 | a8083063 | Iustin Pop | ('%s' % disk.physical_id[1])) |
1210 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'disk%d_size' % disk_count,
|
1211 | a8083063 | Iustin Pop | ('%d' % disk.size))
|
1212 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'disk_count' , '%d' % disk_count) |
1213 | a8083063 | Iustin Pop | |
1214 | a8083063 | Iustin Pop | cff = os.path.join(destdir, constants.EXPORT_CONF_FILE) |
1215 | a8083063 | Iustin Pop | cfo = open(cff, 'w') |
1216 | a8083063 | Iustin Pop | try:
|
1217 | a8083063 | Iustin Pop | config.write(cfo) |
1218 | a8083063 | Iustin Pop | finally:
|
1219 | a8083063 | Iustin Pop | cfo.close() |
1220 | a8083063 | Iustin Pop | |
1221 | a8083063 | Iustin Pop | shutil.rmtree(finaldestdir, True)
|
1222 | a8083063 | Iustin Pop | shutil.move(destdir, finaldestdir) |
1223 | a8083063 | Iustin Pop | |
1224 | a8083063 | Iustin Pop | return True |
1225 | a8083063 | Iustin Pop | |
1226 | a8083063 | Iustin Pop | |
1227 | a8083063 | Iustin Pop | def ExportInfo(dest): |
1228 | a8083063 | Iustin Pop | """Get export configuration information.
|
1229 | a8083063 | Iustin Pop |
|
1230 | a8083063 | Iustin Pop | Args:
|
1231 | a8083063 | Iustin Pop | dest: directory containing the export
|
1232 | a8083063 | Iustin Pop |
|
1233 | a8083063 | Iustin Pop | Returns:
|
1234 | a8083063 | Iustin Pop | A serializable config file containing the export info.
|
1235 | a8083063 | Iustin Pop |
|
1236 | a8083063 | Iustin Pop | """
|
1237 | a8083063 | Iustin Pop | cff = os.path.join(dest, constants.EXPORT_CONF_FILE) |
1238 | a8083063 | Iustin Pop | |
1239 | a8083063 | Iustin Pop | config = objects.SerializableConfigParser() |
1240 | a8083063 | Iustin Pop | config.read(cff) |
1241 | a8083063 | Iustin Pop | |
1242 | a8083063 | Iustin Pop | if (not config.has_section(constants.INISECT_EXP) or |
1243 | a8083063 | Iustin Pop | not config.has_section(constants.INISECT_INS)):
|
1244 | a8083063 | Iustin Pop | return None |
1245 | a8083063 | Iustin Pop | |
1246 | a8083063 | Iustin Pop | return config
|
1247 | a8083063 | Iustin Pop | |
1248 | a8083063 | Iustin Pop | |
1249 | a8083063 | Iustin Pop | def ImportOSIntoInstance(instance, os_disk, swap_disk, src_node, src_image): |
1250 | a8083063 | Iustin Pop | """Import an os image into an instance.
|
1251 | a8083063 | Iustin Pop |
|
1252 | a8083063 | Iustin Pop | Args:
|
1253 | a8083063 | Iustin Pop | instance: the instance object
|
1254 | a8083063 | Iustin Pop | os_disk: the instance-visible name of the os device
|
1255 | a8083063 | Iustin Pop | swap_disk: the instance-visible name of the swap device
|
1256 | a8083063 | Iustin Pop | src_node: node holding the source image
|
1257 | a8083063 | Iustin Pop | src_image: path to the source image on src_node
|
1258 | a8083063 | Iustin Pop |
|
1259 | a8083063 | Iustin Pop | Returns:
|
1260 | a8083063 | Iustin Pop | False in case of error, True otherwise.
|
1261 | a8083063 | Iustin Pop |
|
1262 | a8083063 | Iustin Pop | """
|
1263 | a8083063 | Iustin Pop | inst_os = OSFromDisk(instance.os) |
1264 | a8083063 | Iustin Pop | import_script = inst_os.import_script |
1265 | a8083063 | Iustin Pop | |
1266 | 9716fdce | Iustin Pop | os_device = instance.FindDisk(os_disk) |
1267 | 9716fdce | Iustin Pop | if os_device is None: |
1268 | a8083063 | Iustin Pop | logger.Error("Can't find this device-visible name '%s'" % os_disk)
|
1269 | a8083063 | Iustin Pop | return False |
1270 | a8083063 | Iustin Pop | |
1271 | 9716fdce | Iustin Pop | swap_device = instance.FindDisk(swap_disk) |
1272 | 9716fdce | Iustin Pop | if swap_device is None: |
1273 | a8083063 | Iustin Pop | logger.Error("Can't find this device-visible name '%s'" % swap_disk)
|
1274 | a8083063 | Iustin Pop | return False |
1275 | a8083063 | Iustin Pop | |
1276 | a8083063 | Iustin Pop | real_os_dev = _RecursiveFindBD(os_device) |
1277 | a8083063 | Iustin Pop | if real_os_dev is None: |
1278 | 3ecf6786 | Iustin Pop | raise errors.BlockDeviceError("Block device '%s' is not set up" % |
1279 | 3ecf6786 | Iustin Pop | str(os_device))
|
1280 | a8083063 | Iustin Pop | real_os_dev.Open() |
1281 | a8083063 | Iustin Pop | |
1282 | a8083063 | Iustin Pop | real_swap_dev = _RecursiveFindBD(swap_device) |
1283 | a8083063 | Iustin Pop | if real_swap_dev is None: |
1284 | 3ecf6786 | Iustin Pop | raise errors.BlockDeviceError("Block device '%s' is not set up" % |
1285 | 3ecf6786 | Iustin Pop | str(swap_device))
|
1286 | a8083063 | Iustin Pop | real_swap_dev.Open() |
1287 | a8083063 | Iustin Pop | |
1288 | a8083063 | Iustin Pop | logfile = "%s/import-%s-%s-%s.log" % (constants.LOG_OS_DIR, instance.os,
|
1289 | a8083063 | Iustin Pop | instance.name, int(time.time()))
|
1290 | a8083063 | Iustin Pop | if not os.path.exists(constants.LOG_OS_DIR): |
1291 | a8083063 | Iustin Pop | os.mkdir(constants.LOG_OS_DIR, 0750)
|
1292 | a8083063 | Iustin Pop | |
1293 | 00003458 | Guido Trotter | destcmd = utils.BuildShellCmd('cat %s', src_image)
|
1294 | 7900ed01 | Iustin Pop | remotecmd = ssh.BuildSSHCmd(src_node, constants.GANETI_RUNAS, destcmd) |
1295 | a8083063 | Iustin Pop | |
1296 | a8083063 | Iustin Pop | comprcmd = "gunzip"
|
1297 | a8083063 | Iustin Pop | impcmd = utils.BuildShellCmd("(cd %s; %s -i %s -b %s -s %s &>%s)",
|
1298 | a8083063 | Iustin Pop | inst_os.path, import_script, instance.name, |
1299 | a8083063 | Iustin Pop | real_os_dev.dev_path, real_swap_dev.dev_path, |
1300 | a8083063 | Iustin Pop | logfile) |
1301 | a8083063 | Iustin Pop | |
1302 | 72f0f7fd | Iustin Pop | command = '|'.join([utils.ShellQuoteArgs(remotecmd), comprcmd, impcmd])
|
1303 | a8083063 | Iustin Pop | |
1304 | a8083063 | Iustin Pop | result = utils.RunCmd(command) |
1305 | a8083063 | Iustin Pop | |
1306 | a8083063 | Iustin Pop | if result.failed:
|
1307 | a8083063 | Iustin Pop | logger.Error("os import command '%s' returned error: %s"
|
1308 | a8083063 | Iustin Pop | " output: %s" %
|
1309 | a8083063 | Iustin Pop | (command, result.fail_reason, result.output)) |
1310 | a8083063 | Iustin Pop | return False |
1311 | a8083063 | Iustin Pop | |
1312 | a8083063 | Iustin Pop | return True |
1313 | a8083063 | Iustin Pop | |
1314 | a8083063 | Iustin Pop | |
1315 | a8083063 | Iustin Pop | def ListExports(): |
1316 | a8083063 | Iustin Pop | """Return a list of exports currently available on this machine.
|
1317 | 098c0958 | Michael Hanselmann |
|
1318 | a8083063 | Iustin Pop | """
|
1319 | a8083063 | Iustin Pop | if os.path.isdir(constants.EXPORT_DIR):
|
1320 | eedbda4b | Michael Hanselmann | return utils.ListVisibleFiles(constants.EXPORT_DIR)
|
1321 | a8083063 | Iustin Pop | else:
|
1322 | a8083063 | Iustin Pop | return []
|
1323 | a8083063 | Iustin Pop | |
1324 | a8083063 | Iustin Pop | |
1325 | a8083063 | Iustin Pop | def RemoveExport(export): |
1326 | a8083063 | Iustin Pop | """Remove an existing export from the node.
|
1327 | a8083063 | Iustin Pop |
|
1328 | a8083063 | Iustin Pop | Args:
|
1329 | a8083063 | Iustin Pop | export: the name of the export to remove
|
1330 | a8083063 | Iustin Pop |
|
1331 | a8083063 | Iustin Pop | Returns:
|
1332 | a8083063 | Iustin Pop | False in case of error, True otherwise.
|
1333 | a8083063 | Iustin Pop |
|
1334 | 098c0958 | Michael Hanselmann | """
|
1335 | a8083063 | Iustin Pop | target = os.path.join(constants.EXPORT_DIR, export) |
1336 | a8083063 | Iustin Pop | |
1337 | a8083063 | Iustin Pop | shutil.rmtree(target) |
1338 | a8083063 | Iustin Pop | # TODO: catch some of the relevant exceptions and provide a pretty
|
1339 | a8083063 | Iustin Pop | # error message if rmtree fails.
|
1340 | a8083063 | Iustin Pop | |
1341 | a8083063 | Iustin Pop | return True |
1342 | a8083063 | Iustin Pop | |
1343 | a8083063 | Iustin Pop | |
1344 | f3e513ad | Iustin Pop | def RenameBlockDevices(devlist): |
1345 | f3e513ad | Iustin Pop | """Rename a list of block devices.
|
1346 | f3e513ad | Iustin Pop |
|
1347 | f3e513ad | Iustin Pop | The devlist argument is a list of tuples (disk, new_logical,
|
1348 | f3e513ad | Iustin Pop | new_physical). The return value will be a combined boolean result
|
1349 | f3e513ad | Iustin Pop | (True only if all renames succeeded).
|
1350 | f3e513ad | Iustin Pop |
|
1351 | f3e513ad | Iustin Pop | """
|
1352 | f3e513ad | Iustin Pop | result = True
|
1353 | f3e513ad | Iustin Pop | for disk, unique_id in devlist: |
1354 | f3e513ad | Iustin Pop | dev = _RecursiveFindBD(disk) |
1355 | f3e513ad | Iustin Pop | if dev is None: |
1356 | f3e513ad | Iustin Pop | result = False
|
1357 | f3e513ad | Iustin Pop | continue
|
1358 | f3e513ad | Iustin Pop | try:
|
1359 | f3e513ad | Iustin Pop | dev.Rename(unique_id) |
1360 | f3e513ad | Iustin Pop | except errors.BlockDeviceError, err:
|
1361 | f3e513ad | Iustin Pop | logger.Error("Can't rename device '%s' to '%s': %s" %
|
1362 | f3e513ad | Iustin Pop | (dev, unique_id, err)) |
1363 | f3e513ad | Iustin Pop | result = False
|
1364 | f3e513ad | Iustin Pop | return result
|
1365 | f3e513ad | Iustin Pop | |
1366 | f3e513ad | Iustin Pop | |
1367 | a8083063 | Iustin Pop | class HooksRunner(object): |
1368 | a8083063 | Iustin Pop | """Hook runner.
|
1369 | a8083063 | Iustin Pop |
|
1370 | a8083063 | Iustin Pop | This class is instantiated on the node side (ganeti-noded) and not on
|
1371 | a8083063 | Iustin Pop | the master side.
|
1372 | a8083063 | Iustin Pop |
|
1373 | a8083063 | Iustin Pop | """
|
1374 | a8083063 | Iustin Pop | RE_MASK = re.compile("^[a-zA-Z0-9_-]+$")
|
1375 | a8083063 | Iustin Pop | |
1376 | a8083063 | Iustin Pop | def __init__(self, hooks_base_dir=None): |
1377 | a8083063 | Iustin Pop | """Constructor for hooks runner.
|
1378 | a8083063 | Iustin Pop |
|
1379 | a8083063 | Iustin Pop | Args:
|
1380 | a8083063 | Iustin Pop | - hooks_base_dir: if not None, this overrides the
|
1381 | a8083063 | Iustin Pop | constants.HOOKS_BASE_DIR (useful for unittests)
|
1382 | a8083063 | Iustin Pop | - logs_base_dir: if not None, this overrides the
|
1383 | a8083063 | Iustin Pop | constants.LOG_HOOKS_DIR (useful for unittests)
|
1384 | a8083063 | Iustin Pop | - logging: enable or disable logging of script output
|
1385 | a8083063 | Iustin Pop |
|
1386 | a8083063 | Iustin Pop | """
|
1387 | a8083063 | Iustin Pop | if hooks_base_dir is None: |
1388 | a8083063 | Iustin Pop | hooks_base_dir = constants.HOOKS_BASE_DIR |
1389 | a8083063 | Iustin Pop | self._BASE_DIR = hooks_base_dir
|
1390 | a8083063 | Iustin Pop | |
1391 | a8083063 | Iustin Pop | @staticmethod
|
1392 | a8083063 | Iustin Pop | def ExecHook(script, env): |
1393 | a8083063 | Iustin Pop | """Exec one hook script.
|
1394 | a8083063 | Iustin Pop |
|
1395 | a8083063 | Iustin Pop | Args:
|
1396 | a8083063 | Iustin Pop | - phase: the phase
|
1397 | a8083063 | Iustin Pop | - script: the full path to the script
|
1398 | a8083063 | Iustin Pop | - env: the environment with which to exec the script
|
1399 | a8083063 | Iustin Pop |
|
1400 | a8083063 | Iustin Pop | """
|
1401 | a8083063 | Iustin Pop | # exec the process using subprocess and log the output
|
1402 | a8083063 | Iustin Pop | fdstdin = None
|
1403 | a8083063 | Iustin Pop | try:
|
1404 | a8083063 | Iustin Pop | fdstdin = open("/dev/null", "r") |
1405 | a8083063 | Iustin Pop | child = subprocess.Popen([script], stdin=fdstdin, stdout=subprocess.PIPE, |
1406 | a8083063 | Iustin Pop | stderr=subprocess.STDOUT, close_fds=True,
|
1407 | a8083063 | Iustin Pop | shell=False, cwd="/",env=env) |
1408 | a8083063 | Iustin Pop | output = ""
|
1409 | a8083063 | Iustin Pop | try:
|
1410 | a8083063 | Iustin Pop | output = child.stdout.read(4096)
|
1411 | a8083063 | Iustin Pop | child.stdout.close() |
1412 | a8083063 | Iustin Pop | except EnvironmentError, err: |
1413 | a8083063 | Iustin Pop | output += "Hook script error: %s" % str(err) |
1414 | a8083063 | Iustin Pop | |
1415 | a8083063 | Iustin Pop | while True: |
1416 | a8083063 | Iustin Pop | try:
|
1417 | a8083063 | Iustin Pop | result = child.wait() |
1418 | a8083063 | Iustin Pop | break
|
1419 | a8083063 | Iustin Pop | except EnvironmentError, err: |
1420 | a8083063 | Iustin Pop | if err.errno == errno.EINTR:
|
1421 | a8083063 | Iustin Pop | continue
|
1422 | a8083063 | Iustin Pop | raise
|
1423 | a8083063 | Iustin Pop | finally:
|
1424 | a8083063 | Iustin Pop | # try not to leak fds
|
1425 | a8083063 | Iustin Pop | for fd in (fdstdin, ): |
1426 | a8083063 | Iustin Pop | if fd is not None: |
1427 | a8083063 | Iustin Pop | try:
|
1428 | a8083063 | Iustin Pop | fd.close() |
1429 | a8083063 | Iustin Pop | except EnvironmentError, err: |
1430 | a8083063 | Iustin Pop | # just log the error
|
1431 | a8083063 | Iustin Pop | #logger.Error("While closing fd %s: %s" % (fd, err))
|
1432 | a8083063 | Iustin Pop | pass
|
1433 | a8083063 | Iustin Pop | |
1434 | a8083063 | Iustin Pop | return result == 0, output |
1435 | a8083063 | Iustin Pop | |
1436 | a8083063 | Iustin Pop | def RunHooks(self, hpath, phase, env): |
1437 | a8083063 | Iustin Pop | """Run the scripts in the hooks directory.
|
1438 | a8083063 | Iustin Pop |
|
1439 | a8083063 | Iustin Pop | This method will not be usually overriden by child opcodes.
|
1440 | a8083063 | Iustin Pop |
|
1441 | a8083063 | Iustin Pop | """
|
1442 | a8083063 | Iustin Pop | if phase == constants.HOOKS_PHASE_PRE:
|
1443 | a8083063 | Iustin Pop | suffix = "pre"
|
1444 | a8083063 | Iustin Pop | elif phase == constants.HOOKS_PHASE_POST:
|
1445 | a8083063 | Iustin Pop | suffix = "post"
|
1446 | a8083063 | Iustin Pop | else:
|
1447 | 3ecf6786 | Iustin Pop | raise errors.ProgrammerError("Unknown hooks phase: '%s'" % phase) |
1448 | a8083063 | Iustin Pop | rr = [] |
1449 | a8083063 | Iustin Pop | |
1450 | a8083063 | Iustin Pop | subdir = "%s-%s.d" % (hpath, suffix)
|
1451 | a8083063 | Iustin Pop | dir_name = "%s/%s" % (self._BASE_DIR, subdir) |
1452 | a8083063 | Iustin Pop | try:
|
1453 | eedbda4b | Michael Hanselmann | dir_contents = utils.ListVisibleFiles(dir_name) |
1454 | a8083063 | Iustin Pop | except OSError, err: |
1455 | a8083063 | Iustin Pop | # must log
|
1456 | a8083063 | Iustin Pop | return rr
|
1457 | a8083063 | Iustin Pop | |
1458 | a8083063 | Iustin Pop | # we use the standard python sort order,
|
1459 | a8083063 | Iustin Pop | # so 00name is the recommended naming scheme
|
1460 | a8083063 | Iustin Pop | dir_contents.sort() |
1461 | a8083063 | Iustin Pop | for relname in dir_contents: |
1462 | a8083063 | Iustin Pop | fname = os.path.join(dir_name, relname) |
1463 | a8083063 | Iustin Pop | if not (os.path.isfile(fname) and os.access(fname, os.X_OK) and |
1464 | a8083063 | Iustin Pop | self.RE_MASK.match(relname) is not None): |
1465 | a8083063 | Iustin Pop | rrval = constants.HKR_SKIP |
1466 | a8083063 | Iustin Pop | output = ""
|
1467 | a8083063 | Iustin Pop | else:
|
1468 | a8083063 | Iustin Pop | result, output = self.ExecHook(fname, env)
|
1469 | a8083063 | Iustin Pop | if not result: |
1470 | a8083063 | Iustin Pop | rrval = constants.HKR_FAIL |
1471 | a8083063 | Iustin Pop | else:
|
1472 | a8083063 | Iustin Pop | rrval = constants.HKR_SUCCESS |
1473 | a8083063 | Iustin Pop | rr.append(("%s/%s" % (subdir, relname), rrval, output))
|
1474 | a8083063 | Iustin Pop | |
1475 | a8083063 | Iustin Pop | return rr |