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2 | a8083063 | Iustin Pop | #
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3 | a8083063 | Iustin Pop | |
4 | a8083063 | Iustin Pop | # Copyright (C) 2006, 2007 Google Inc.
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5 | a8083063 | Iustin Pop | #
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6 | a8083063 | Iustin Pop | # This program is free software; you can redistribute it and/or modify
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7 | a8083063 | Iustin Pop | # it under the terms of the GNU General Public License as published by
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8 | a8083063 | Iustin Pop | # the Free Software Foundation; either version 2 of the License, or
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9 | a8083063 | Iustin Pop | # (at your option) any later version.
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10 | a8083063 | Iustin Pop | #
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11 | a8083063 | Iustin Pop | # This program is distributed in the hope that it will be useful, but
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12 | a8083063 | Iustin Pop | # WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | a8083063 | Iustin Pop | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | a8083063 | Iustin Pop | # General Public License for more details.
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15 | a8083063 | Iustin Pop | #
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16 | a8083063 | Iustin Pop | # You should have received a copy of the GNU General Public License
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17 | a8083063 | Iustin Pop | # along with this program; if not, write to the Free Software
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18 | a8083063 | Iustin Pop | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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19 | a8083063 | Iustin Pop | # 02110-1301, USA.
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20 | a8083063 | Iustin Pop | |
21 | a8083063 | Iustin Pop | |
22 | a8083063 | Iustin Pop | """Functions used by the node daemon"""
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23 | a8083063 | Iustin Pop | |
24 | a8083063 | Iustin Pop | |
25 | a8083063 | Iustin Pop | import os |
26 | a8083063 | Iustin Pop | import os.path |
27 | a8083063 | Iustin Pop | import shutil |
28 | a8083063 | Iustin Pop | import time |
29 | a8083063 | Iustin Pop | import stat |
30 | a8083063 | Iustin Pop | import errno |
31 | a8083063 | Iustin Pop | import re |
32 | a8083063 | Iustin Pop | import subprocess |
33 | b544cfe0 | Iustin Pop | import random |
34 | 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 | c92b310a | Michael Hanselmann | def _GetSshRunner(): |
47 | c92b310a | Michael Hanselmann | return ssh.SshRunner()
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48 | c92b310a | Michael Hanselmann | |
49 | c92b310a | Michael Hanselmann | |
50 | a8083063 | Iustin Pop | def StartMaster(): |
51 | a8083063 | Iustin Pop | """Activate local node as master node.
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52 | a8083063 | Iustin Pop |
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53 | a8083063 | Iustin Pop | There are two needed steps for this:
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54 | 880478f8 | Iustin Pop | - run the master script
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55 | a8083063 | Iustin Pop | - register the cron script
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56 | a8083063 | Iustin Pop |
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57 | a8083063 | Iustin Pop | """
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58 | 880478f8 | Iustin Pop | result = utils.RunCmd([constants.MASTER_SCRIPT, "-d", "start"]) |
59 | a8083063 | Iustin Pop | |
60 | a8083063 | Iustin Pop | if result.failed:
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61 | a8083063 | Iustin Pop | logger.Error("could not activate cluster interface with command %s,"
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62 | 880478f8 | Iustin Pop | " error: '%s'" % (result.cmd, result.output))
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63 | a8083063 | Iustin Pop | return False |
64 | a8083063 | Iustin Pop | |
65 | a8083063 | Iustin Pop | return True |
66 | a8083063 | Iustin Pop | |
67 | a8083063 | Iustin Pop | |
68 | a8083063 | Iustin Pop | def StopMaster(): |
69 | a8083063 | Iustin Pop | """Deactivate this node as master.
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70 | a8083063 | Iustin Pop |
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71 | c9064964 | Iustin Pop | This runs the master stop script.
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72 | a8083063 | Iustin Pop |
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73 | a8083063 | Iustin Pop | """
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74 | 880478f8 | Iustin Pop | result = utils.RunCmd([constants.MASTER_SCRIPT, "-d", "stop"]) |
75 | a8083063 | Iustin Pop | |
76 | a8083063 | Iustin Pop | if result.failed:
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77 | a8083063 | Iustin Pop | logger.Error("could not deactivate cluster interface with command %s,"
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78 | 880478f8 | Iustin Pop | " error: '%s'" % (result.cmd, result.output))
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79 | a8083063 | Iustin Pop | return False |
80 | a8083063 | Iustin Pop | |
81 | a8083063 | Iustin Pop | return True |
82 | a8083063 | Iustin Pop | |
83 | a8083063 | Iustin Pop | |
84 | 9716fdce | Iustin Pop | def AddNode(dsa, dsapub, rsa, rsapub, sshkey, sshpub): |
85 | 7900ed01 | Iustin Pop | """Joins this node to the cluster.
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86 | a8083063 | Iustin Pop |
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87 | 7900ed01 | Iustin Pop | This does the following:
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88 | 7900ed01 | Iustin Pop | - updates the hostkeys of the machine (rsa and dsa)
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89 | 7900ed01 | Iustin Pop | - adds the ssh private key to the user
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90 | 7900ed01 | Iustin Pop | - adds the ssh public key to the users' authorized_keys file
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91 | a8083063 | Iustin Pop |
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92 | 7900ed01 | Iustin Pop | """
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93 | 70d9e3d8 | Iustin Pop | sshd_keys = [(constants.SSH_HOST_RSA_PRIV, rsa, 0600),
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94 | 70d9e3d8 | Iustin Pop | (constants.SSH_HOST_RSA_PUB, rsapub, 0644),
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95 | 70d9e3d8 | Iustin Pop | (constants.SSH_HOST_DSA_PRIV, dsa, 0600),
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96 | 70d9e3d8 | Iustin Pop | (constants.SSH_HOST_DSA_PUB, dsapub, 0644)]
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97 | 7900ed01 | Iustin Pop | for name, content, mode in sshd_keys: |
98 | 70d9e3d8 | Iustin Pop | utils.WriteFile(name, data=content, mode=mode) |
99 | a8083063 | Iustin Pop | |
100 | 70d9e3d8 | Iustin Pop | try:
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101 | 70d9e3d8 | Iustin Pop | priv_key, pub_key, auth_keys = ssh.GetUserFiles(constants.GANETI_RUNAS, |
102 | 70d9e3d8 | Iustin Pop | mkdir=True)
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103 | 70d9e3d8 | Iustin Pop | except errors.OpExecError, err:
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104 | 70d9e3d8 | Iustin Pop | logger.Error("Error while processing user ssh files: %s" % err)
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105 | 70d9e3d8 | Iustin Pop | return False |
106 | a8083063 | Iustin Pop | |
107 | 70d9e3d8 | Iustin Pop | for name, content in [(priv_key, sshkey), (pub_key, sshpub)]: |
108 | 70d9e3d8 | Iustin Pop | utils.WriteFile(name, data=content, mode=0600)
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109 | a8083063 | Iustin Pop | |
110 | 70d9e3d8 | Iustin Pop | utils.AddAuthorizedKey(auth_keys, sshpub) |
111 | a8083063 | Iustin Pop | |
112 | f491c3a8 | Michael Hanselmann | utils.RunCmd([constants.SSH_INITD_SCRIPT, "restart"])
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113 | a8083063 | Iustin Pop | |
114 | a8083063 | Iustin Pop | return True |
115 | a8083063 | Iustin Pop | |
116 | a8083063 | Iustin Pop | |
117 | a8083063 | Iustin Pop | def LeaveCluster(): |
118 | a8083063 | Iustin Pop | """Cleans up the current node and prepares it to be removed from the cluster.
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119 | a8083063 | Iustin Pop |
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120 | a8083063 | Iustin Pop | """
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121 | 71eca7c3 | Iustin Pop | if os.path.isdir(constants.DATA_DIR):
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122 | 71eca7c3 | Iustin Pop | for rel_name in utils.ListVisibleFiles(constants.DATA_DIR): |
123 | 71eca7c3 | Iustin Pop | full_name = os.path.join(constants.DATA_DIR, rel_name) |
124 | 71eca7c3 | Iustin Pop | if os.path.isfile(full_name) and not os.path.islink(full_name): |
125 | 71eca7c3 | Iustin Pop | utils.RemoveFile(full_name) |
126 | a8083063 | Iustin Pop | |
127 | 70d9e3d8 | Iustin Pop | try:
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128 | 70d9e3d8 | Iustin Pop | priv_key, pub_key, auth_keys = ssh.GetUserFiles(constants.GANETI_RUNAS) |
129 | 70d9e3d8 | Iustin Pop | except errors.OpExecError, err:
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130 | 70d9e3d8 | Iustin Pop | logger.Error("Error while processing ssh files: %s" % err)
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131 | 7900ed01 | Iustin Pop | return
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132 | 7900ed01 | Iustin Pop | |
133 | 70d9e3d8 | Iustin Pop | f = open(pub_key, 'r') |
134 | a8083063 | Iustin Pop | try:
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135 | 70d9e3d8 | Iustin Pop | utils.RemoveAuthorizedKey(auth_keys, f.read(8192))
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136 | a8083063 | Iustin Pop | finally:
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137 | a8083063 | Iustin Pop | f.close() |
138 | a8083063 | Iustin Pop | |
139 | 70d9e3d8 | Iustin Pop | utils.RemoveFile(priv_key) |
140 | 70d9e3d8 | Iustin Pop | utils.RemoveFile(pub_key) |
141 | a8083063 | Iustin Pop | |
142 | 6d8b6238 | Guido Trotter | # Return a reassuring string to the caller, and quit
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143 | 6d8b6238 | Guido Trotter | raise errors.QuitGanetiException(False, 'Shutdown scheduled') |
144 | 6d8b6238 | Guido Trotter | |
145 | a8083063 | Iustin Pop | |
146 | a8083063 | Iustin Pop | def GetNodeInfo(vgname): |
147 | 2f8598a5 | Alexander Schreiber | """Gives back a hash with different informations about the node.
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148 | a8083063 | Iustin Pop |
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149 | a8083063 | Iustin Pop | Returns:
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150 | a8083063 | Iustin Pop | { 'vg_size' : xxx, 'vg_free' : xxx, 'memory_domain0': xxx,
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151 | a8083063 | Iustin Pop | 'memory_free' : xxx, 'memory_total' : xxx }
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152 | a8083063 | Iustin Pop | where
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153 | a8083063 | Iustin Pop | vg_size is the size of the configured volume group in MiB
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154 | a8083063 | Iustin Pop | vg_free is the free size of the volume group in MiB
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155 | a8083063 | Iustin Pop | memory_dom0 is the memory allocated for domain0 in MiB
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156 | a8083063 | Iustin Pop | memory_free is the currently available (free) ram in MiB
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157 | a8083063 | Iustin Pop | memory_total is the total number of ram in MiB
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158 | a8083063 | Iustin Pop |
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159 | 098c0958 | Michael Hanselmann | """
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160 | a8083063 | Iustin Pop | outputarray = {} |
161 | a8083063 | Iustin Pop | vginfo = _GetVGInfo(vgname) |
162 | a8083063 | Iustin Pop | outputarray['vg_size'] = vginfo['vg_size'] |
163 | a8083063 | Iustin Pop | outputarray['vg_free'] = vginfo['vg_free'] |
164 | a8083063 | Iustin Pop | |
165 | a8083063 | Iustin Pop | hyper = hypervisor.GetHypervisor() |
166 | a8083063 | Iustin Pop | hyp_info = hyper.GetNodeInfo() |
167 | a8083063 | Iustin Pop | if hyp_info is not None: |
168 | a8083063 | Iustin Pop | outputarray.update(hyp_info) |
169 | a8083063 | Iustin Pop | |
170 | 3ef10550 | Michael Hanselmann | f = open("/proc/sys/kernel/random/boot_id", 'r') |
171 | 3ef10550 | Michael Hanselmann | try:
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172 | 3ef10550 | Michael Hanselmann | outputarray["bootid"] = f.read(128).rstrip("\n") |
173 | 3ef10550 | Michael Hanselmann | finally:
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174 | 3ef10550 | Michael Hanselmann | f.close() |
175 | 3ef10550 | Michael Hanselmann | |
176 | a8083063 | Iustin Pop | return outputarray
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177 | a8083063 | Iustin Pop | |
178 | a8083063 | Iustin Pop | |
179 | a8083063 | Iustin Pop | def VerifyNode(what): |
180 | a8083063 | Iustin Pop | """Verify the status of the local node.
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181 | a8083063 | Iustin Pop |
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182 | a8083063 | Iustin Pop | Args:
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183 | a8083063 | Iustin Pop | what - a dictionary of things to check:
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184 | a8083063 | Iustin Pop | 'filelist' : list of files for which to compute checksums
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185 | a8083063 | Iustin Pop | 'nodelist' : list of nodes we should check communication with
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186 | a8083063 | Iustin Pop | 'hypervisor': run the hypervisor-specific verify
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187 | a8083063 | Iustin Pop |
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188 | a8083063 | Iustin Pop | Requested files on local node are checksummed and the result returned.
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189 | a8083063 | Iustin Pop |
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190 | a8083063 | Iustin Pop | The nodelist is traversed, with the following checks being made
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191 | a8083063 | Iustin Pop | for each node:
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192 | a8083063 | Iustin Pop | - known_hosts key correct
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193 | a8083063 | Iustin Pop | - correct resolving of node name (target node returns its own hostname
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194 | a8083063 | Iustin Pop | by ssh-execution of 'hostname', result compared against name in list.
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195 | a8083063 | Iustin Pop |
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196 | a8083063 | Iustin Pop | """
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197 | a8083063 | Iustin Pop | result = {} |
198 | a8083063 | Iustin Pop | |
199 | a8083063 | Iustin Pop | if 'hypervisor' in what: |
200 | a8083063 | Iustin Pop | result['hypervisor'] = hypervisor.GetHypervisor().Verify()
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201 | a8083063 | Iustin Pop | |
202 | a8083063 | Iustin Pop | if 'filelist' in what: |
203 | a8083063 | Iustin Pop | result['filelist'] = utils.FingerprintFiles(what['filelist']) |
204 | a8083063 | Iustin Pop | |
205 | a8083063 | Iustin Pop | if 'nodelist' in what: |
206 | a8083063 | Iustin Pop | result['nodelist'] = {}
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207 | b544cfe0 | Iustin Pop | random.shuffle(what['nodelist'])
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208 | a8083063 | Iustin Pop | for node in what['nodelist']: |
209 | c92b310a | Michael Hanselmann | success, message = _GetSshRunner().VerifyNodeHostname(node) |
210 | a8083063 | Iustin Pop | if not success: |
211 | a8083063 | Iustin Pop | result['nodelist'][node] = message
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212 | 9d4bfc96 | Iustin Pop | if 'node-net-test' in what: |
213 | 9d4bfc96 | Iustin Pop | result['node-net-test'] = {}
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214 | 9d4bfc96 | Iustin Pop | my_name = utils.HostInfo().name |
215 | 9d4bfc96 | Iustin Pop | my_pip = my_sip = None
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216 | 9d4bfc96 | Iustin Pop | for name, pip, sip in what['node-net-test']: |
217 | 9d4bfc96 | Iustin Pop | if name == my_name:
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218 | 9d4bfc96 | Iustin Pop | my_pip = pip |
219 | 9d4bfc96 | Iustin Pop | my_sip = sip |
220 | 9d4bfc96 | Iustin Pop | break
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221 | 9d4bfc96 | Iustin Pop | if not my_pip: |
222 | 9d4bfc96 | Iustin Pop | result['node-net-test'][my_name] = ("Can't find my own" |
223 | 9d4bfc96 | Iustin Pop | " primary/secondary IP"
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224 | 9d4bfc96 | Iustin Pop | " in the node list")
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225 | 9d4bfc96 | Iustin Pop | else:
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226 | 9d4bfc96 | Iustin Pop | port = ssconf.SimpleStore().GetNodeDaemonPort() |
227 | 9d4bfc96 | Iustin Pop | for name, pip, sip in what['node-net-test']: |
228 | 9d4bfc96 | Iustin Pop | fail = [] |
229 | 9d4bfc96 | Iustin Pop | if not utils.TcpPing(pip, port, source=my_pip): |
230 | 9d4bfc96 | Iustin Pop | fail.append("primary")
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231 | 9d4bfc96 | Iustin Pop | if sip != pip:
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232 | 9d4bfc96 | Iustin Pop | if not utils.TcpPing(sip, port, source=my_sip): |
233 | 9d4bfc96 | Iustin Pop | fail.append("secondary")
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234 | 9d4bfc96 | Iustin Pop | if fail:
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235 | 9d4bfc96 | Iustin Pop | result['node-net-test'][name] = ("failure using the %s" |
236 | 9d4bfc96 | Iustin Pop | " interface(s)" %
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237 | 9d4bfc96 | Iustin Pop | " and ".join(fail))
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238 | 9d4bfc96 | Iustin Pop | |
239 | a8083063 | Iustin Pop | return result
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240 | a8083063 | Iustin Pop | |
241 | a8083063 | Iustin Pop | |
242 | a8083063 | Iustin Pop | def GetVolumeList(vg_name): |
243 | a8083063 | Iustin Pop | """Compute list of logical volumes and their size.
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244 | a8083063 | Iustin Pop |
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245 | a8083063 | Iustin Pop | Returns:
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246 | cb2037a2 | Iustin Pop | dictionary of all partions (key) with their size (in MiB), inactive
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247 | cb2037a2 | Iustin Pop | and online status:
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248 | cb2037a2 | Iustin Pop | {'test1': ('20.06', True, True)}
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249 | a8083063 | Iustin Pop |
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250 | a8083063 | Iustin Pop | """
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251 | cb2037a2 | Iustin Pop | lvs = {} |
252 | cb2037a2 | Iustin Pop | sep = '|'
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253 | cb2037a2 | Iustin Pop | result = utils.RunCmd(["lvs", "--noheadings", "--units=m", "--nosuffix", |
254 | cb2037a2 | Iustin Pop | "--separator=%s" % sep,
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255 | cb2037a2 | Iustin Pop | "-olv_name,lv_size,lv_attr", vg_name])
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256 | a8083063 | Iustin Pop | if result.failed:
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257 | a8083063 | Iustin Pop | logger.Error("Failed to list logical volumes, lvs output: %s" %
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258 | a8083063 | Iustin Pop | result.output) |
259 | b63ed789 | Iustin Pop | return result.output
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260 | cb2037a2 | Iustin Pop | |
261 | cb2037a2 | Iustin Pop | for line in result.stdout.splitlines(): |
262 | cb2037a2 | Iustin Pop | line = line.strip().rstrip(sep) |
263 | cb2037a2 | Iustin Pop | name, size, attr = line.split(sep) |
264 | cb2037a2 | Iustin Pop | if len(attr) != 6: |
265 | cb2037a2 | Iustin Pop | attr = '------'
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266 | cb2037a2 | Iustin Pop | inactive = attr[4] == '-' |
267 | cb2037a2 | Iustin Pop | online = attr[5] == 'o' |
268 | cb2037a2 | Iustin Pop | lvs[name] = (size, inactive, online) |
269 | cb2037a2 | Iustin Pop | |
270 | cb2037a2 | Iustin Pop | return lvs
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271 | a8083063 | Iustin Pop | |
272 | a8083063 | Iustin Pop | |
273 | a8083063 | Iustin Pop | def ListVolumeGroups(): |
274 | 2f8598a5 | Alexander Schreiber | """List the volume groups and their size.
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275 | a8083063 | Iustin Pop |
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276 | a8083063 | Iustin Pop | Returns:
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277 | a8083063 | Iustin Pop | Dictionary with keys volume name and values the size of the volume
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278 | a8083063 | Iustin Pop |
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279 | a8083063 | Iustin Pop | """
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280 | a8083063 | Iustin Pop | return utils.ListVolumeGroups()
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281 | a8083063 | Iustin Pop | |
282 | a8083063 | Iustin Pop | |
283 | dcb93971 | Michael Hanselmann | def NodeVolumes(): |
284 | dcb93971 | Michael Hanselmann | """List all volumes on this node.
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285 | dcb93971 | Michael Hanselmann |
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286 | dcb93971 | Michael Hanselmann | """
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287 | dcb93971 | Michael Hanselmann | result = utils.RunCmd(["lvs", "--noheadings", "--units=m", "--nosuffix", |
288 | dcb93971 | Michael Hanselmann | "--separator=|",
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289 | dcb93971 | Michael Hanselmann | "--options=lv_name,lv_size,devices,vg_name"])
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290 | dcb93971 | Michael Hanselmann | if result.failed:
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291 | dcb93971 | Michael Hanselmann | logger.Error("Failed to list logical volumes, lvs output: %s" %
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292 | dcb93971 | Michael Hanselmann | result.output) |
293 | dcb93971 | Michael Hanselmann | return {}
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294 | dcb93971 | Michael Hanselmann | |
295 | dcb93971 | Michael Hanselmann | def parse_dev(dev): |
296 | dcb93971 | Michael Hanselmann | if '(' in dev: |
297 | dcb93971 | Michael Hanselmann | return dev.split('(')[0] |
298 | dcb93971 | Michael Hanselmann | else:
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299 | dcb93971 | Michael Hanselmann | return dev
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300 | dcb93971 | Michael Hanselmann | |
301 | dcb93971 | Michael Hanselmann | def map_line(line): |
302 | dcb93971 | Michael Hanselmann | return {
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303 | dcb93971 | Michael Hanselmann | 'name': line[0].strip(), |
304 | dcb93971 | Michael Hanselmann | 'size': line[1].strip(), |
305 | dcb93971 | Michael Hanselmann | 'dev': parse_dev(line[2].strip()), |
306 | dcb93971 | Michael Hanselmann | 'vg': line[3].strip(), |
307 | dcb93971 | Michael Hanselmann | } |
308 | dcb93971 | Michael Hanselmann | |
309 | f675d4aa | Alexander Schreiber | return [map_line(line.split('|')) for line in result.stdout.splitlines()] |
310 | dcb93971 | Michael Hanselmann | |
311 | dcb93971 | Michael Hanselmann | |
312 | a8083063 | Iustin Pop | def BridgesExist(bridges_list): |
313 | 2f8598a5 | Alexander Schreiber | """Check if a list of bridges exist on the current node.
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314 | a8083063 | Iustin Pop |
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315 | a8083063 | Iustin Pop | Returns:
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316 | a8083063 | Iustin Pop | True if all of them exist, false otherwise
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317 | a8083063 | Iustin Pop |
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318 | a8083063 | Iustin Pop | """
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319 | a8083063 | Iustin Pop | for bridge in bridges_list: |
320 | a8083063 | Iustin Pop | if not utils.BridgeExists(bridge): |
321 | a8083063 | Iustin Pop | return False |
322 | a8083063 | Iustin Pop | |
323 | a8083063 | Iustin Pop | return True |
324 | a8083063 | Iustin Pop | |
325 | a8083063 | Iustin Pop | |
326 | a8083063 | Iustin Pop | def GetInstanceList(): |
327 | 2f8598a5 | Alexander Schreiber | """Provides a list of instances.
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328 | a8083063 | Iustin Pop |
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329 | a8083063 | Iustin Pop | Returns:
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330 | a8083063 | Iustin Pop | A list of all running instances on the current node
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331 | a8083063 | Iustin Pop | - instance1.example.com
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332 | a8083063 | Iustin Pop | - instance2.example.com
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333 | a8083063 | Iustin Pop |
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334 | 098c0958 | Michael Hanselmann | """
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335 | a8083063 | Iustin Pop | try:
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336 | a8083063 | Iustin Pop | names = hypervisor.GetHypervisor().ListInstances() |
337 | a8083063 | Iustin Pop | except errors.HypervisorError, err:
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338 | a8083063 | Iustin Pop | logger.Error("error enumerating instances: %s" % str(err)) |
339 | a8083063 | Iustin Pop | raise
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340 | a8083063 | Iustin Pop | |
341 | a8083063 | Iustin Pop | return names
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342 | a8083063 | Iustin Pop | |
343 | a8083063 | Iustin Pop | |
344 | a8083063 | Iustin Pop | def GetInstanceInfo(instance): |
345 | 2f8598a5 | Alexander Schreiber | """Gives back the informations about an instance as a dictionary.
|
346 | a8083063 | Iustin Pop |
|
347 | a8083063 | Iustin Pop | Args:
|
348 | a8083063 | Iustin Pop | instance: name of the instance (ex. instance1.example.com)
|
349 | a8083063 | Iustin Pop |
|
350 | a8083063 | Iustin Pop | Returns:
|
351 | a8083063 | Iustin Pop | { 'memory' : 511, 'state' : '-b---', 'time' : 3188.8, }
|
352 | a8083063 | Iustin Pop | where
|
353 | a8083063 | Iustin Pop | memory: memory size of instance (int)
|
354 | a8083063 | Iustin Pop | state: xen state of instance (string)
|
355 | a8083063 | Iustin Pop | time: cpu time of instance (float)
|
356 | a8083063 | Iustin Pop |
|
357 | 098c0958 | Michael Hanselmann | """
|
358 | a8083063 | Iustin Pop | output = {} |
359 | a8083063 | Iustin Pop | |
360 | a8083063 | Iustin Pop | iinfo = hypervisor.GetHypervisor().GetInstanceInfo(instance) |
361 | a8083063 | Iustin Pop | if iinfo is not None: |
362 | a8083063 | Iustin Pop | output['memory'] = iinfo[2] |
363 | a8083063 | Iustin Pop | output['state'] = iinfo[4] |
364 | a8083063 | Iustin Pop | output['time'] = iinfo[5] |
365 | a8083063 | Iustin Pop | |
366 | a8083063 | Iustin Pop | return output
|
367 | a8083063 | Iustin Pop | |
368 | a8083063 | Iustin Pop | |
369 | a8083063 | Iustin Pop | def GetAllInstancesInfo(): |
370 | a8083063 | Iustin Pop | """Gather data about all instances.
|
371 | a8083063 | Iustin Pop |
|
372 | a8083063 | Iustin Pop | This is the equivalent of `GetInstanceInfo()`, except that it
|
373 | a8083063 | Iustin Pop | computes data for all instances at once, thus being faster if one
|
374 | a8083063 | Iustin Pop | needs data about more than one instance.
|
375 | a8083063 | Iustin Pop |
|
376 | a8083063 | Iustin Pop | Returns: a dictionary of dictionaries, keys being the instance name,
|
377 | a8083063 | Iustin Pop | and with values:
|
378 | a8083063 | Iustin Pop | { 'memory' : 511, 'state' : '-b---', 'time' : 3188.8, }
|
379 | a8083063 | Iustin Pop | where
|
380 | a8083063 | Iustin Pop | memory: memory size of instance (int)
|
381 | a8083063 | Iustin Pop | state: xen state of instance (string)
|
382 | a8083063 | Iustin Pop | time: cpu time of instance (float)
|
383 | a8083063 | Iustin Pop | vcpus: the number of cpus
|
384 | a8083063 | Iustin Pop |
|
385 | 098c0958 | Michael Hanselmann | """
|
386 | a8083063 | Iustin Pop | output = {} |
387 | a8083063 | Iustin Pop | |
388 | a8083063 | Iustin Pop | iinfo = hypervisor.GetHypervisor().GetAllInstancesInfo() |
389 | a8083063 | Iustin Pop | if iinfo:
|
390 | 3ecf6786 | Iustin Pop | for name, inst_id, memory, vcpus, state, times in iinfo: |
391 | a8083063 | Iustin Pop | output[name] = { |
392 | a8083063 | Iustin Pop | 'memory': memory,
|
393 | a8083063 | Iustin Pop | 'vcpus': vcpus,
|
394 | a8083063 | Iustin Pop | 'state': state,
|
395 | a8083063 | Iustin Pop | 'time': times,
|
396 | a8083063 | Iustin Pop | } |
397 | a8083063 | Iustin Pop | |
398 | a8083063 | Iustin Pop | return output
|
399 | a8083063 | Iustin Pop | |
400 | a8083063 | Iustin Pop | |
401 | a8083063 | Iustin Pop | def AddOSToInstance(instance, os_disk, swap_disk): |
402 | 2f8598a5 | Alexander Schreiber | """Add an OS to an instance.
|
403 | a8083063 | Iustin Pop |
|
404 | a8083063 | Iustin Pop | Args:
|
405 | a8083063 | Iustin Pop | instance: the instance object
|
406 | a8083063 | Iustin Pop | os_disk: the instance-visible name of the os device
|
407 | a8083063 | Iustin Pop | swap_disk: the instance-visible name of the swap device
|
408 | a8083063 | Iustin Pop |
|
409 | a8083063 | Iustin Pop | """
|
410 | a8083063 | Iustin Pop | inst_os = OSFromDisk(instance.os) |
411 | a8083063 | Iustin Pop | |
412 | a8083063 | Iustin Pop | create_script = inst_os.create_script |
413 | a8083063 | Iustin Pop | |
414 | 9716fdce | Iustin Pop | os_device = instance.FindDisk(os_disk) |
415 | 9716fdce | Iustin Pop | if os_device is None: |
416 | a8083063 | Iustin Pop | logger.Error("Can't find this device-visible name '%s'" % os_disk)
|
417 | a8083063 | Iustin Pop | return False |
418 | a8083063 | Iustin Pop | |
419 | 9716fdce | Iustin Pop | swap_device = instance.FindDisk(swap_disk) |
420 | 9716fdce | Iustin Pop | if swap_device is None: |
421 | a8083063 | Iustin Pop | logger.Error("Can't find this device-visible name '%s'" % swap_disk)
|
422 | a8083063 | Iustin Pop | return False |
423 | a8083063 | Iustin Pop | |
424 | a8083063 | Iustin Pop | real_os_dev = _RecursiveFindBD(os_device) |
425 | a8083063 | Iustin Pop | if real_os_dev is None: |
426 | a8083063 | Iustin Pop | raise errors.BlockDeviceError("Block device '%s' is not set up" % |
427 | a8083063 | Iustin Pop | str(os_device))
|
428 | a8083063 | Iustin Pop | real_os_dev.Open() |
429 | a8083063 | Iustin Pop | |
430 | a8083063 | Iustin Pop | real_swap_dev = _RecursiveFindBD(swap_device) |
431 | a8083063 | Iustin Pop | if real_swap_dev is None: |
432 | a8083063 | Iustin Pop | raise errors.BlockDeviceError("Block device '%s' is not set up" % |
433 | a8083063 | Iustin Pop | str(swap_device))
|
434 | a8083063 | Iustin Pop | real_swap_dev.Open() |
435 | a8083063 | Iustin Pop | |
436 | a8083063 | Iustin Pop | logfile = "%s/add-%s-%s-%d.log" % (constants.LOG_OS_DIR, instance.os,
|
437 | a8083063 | Iustin Pop | instance.name, int(time.time()))
|
438 | a8083063 | Iustin Pop | if not os.path.exists(constants.LOG_OS_DIR): |
439 | a8083063 | Iustin Pop | os.mkdir(constants.LOG_OS_DIR, 0750)
|
440 | a8083063 | Iustin Pop | |
441 | c20494cd | Iustin Pop | command = utils.BuildShellCmd("cd %s && %s -i %s -b %s -s %s &>%s",
|
442 | a8083063 | Iustin Pop | inst_os.path, create_script, instance.name, |
443 | a8083063 | Iustin Pop | real_os_dev.dev_path, real_swap_dev.dev_path, |
444 | a8083063 | Iustin Pop | logfile) |
445 | decd5f45 | Iustin Pop | |
446 | decd5f45 | Iustin Pop | result = utils.RunCmd(command) |
447 | decd5f45 | Iustin Pop | if result.failed:
|
448 | ff73280e | Michael Hanselmann | logger.Error("os create command '%s' returned error: %s, logfile: %s,"
|
449 | decd5f45 | Iustin Pop | " output: %s" %
|
450 | ff73280e | Michael Hanselmann | (command, result.fail_reason, logfile, result.output)) |
451 | decd5f45 | Iustin Pop | return False |
452 | decd5f45 | Iustin Pop | |
453 | decd5f45 | Iustin Pop | return True |
454 | decd5f45 | Iustin Pop | |
455 | decd5f45 | Iustin Pop | |
456 | decd5f45 | Iustin Pop | def RunRenameInstance(instance, old_name, os_disk, swap_disk): |
457 | decd5f45 | Iustin Pop | """Run the OS rename script for an instance.
|
458 | decd5f45 | Iustin Pop |
|
459 | decd5f45 | Iustin Pop | Args:
|
460 | decd5f45 | Iustin Pop | instance: the instance object
|
461 | decd5f45 | Iustin Pop | old_name: the old name of the instance
|
462 | decd5f45 | Iustin Pop | os_disk: the instance-visible name of the os device
|
463 | decd5f45 | Iustin Pop | swap_disk: the instance-visible name of the swap device
|
464 | decd5f45 | Iustin Pop |
|
465 | decd5f45 | Iustin Pop | """
|
466 | decd5f45 | Iustin Pop | inst_os = OSFromDisk(instance.os) |
467 | decd5f45 | Iustin Pop | |
468 | decd5f45 | Iustin Pop | script = inst_os.rename_script |
469 | decd5f45 | Iustin Pop | |
470 | decd5f45 | Iustin Pop | os_device = instance.FindDisk(os_disk) |
471 | decd5f45 | Iustin Pop | if os_device is None: |
472 | decd5f45 | Iustin Pop | logger.Error("Can't find this device-visible name '%s'" % os_disk)
|
473 | decd5f45 | Iustin Pop | return False |
474 | decd5f45 | Iustin Pop | |
475 | decd5f45 | Iustin Pop | swap_device = instance.FindDisk(swap_disk) |
476 | decd5f45 | Iustin Pop | if swap_device is None: |
477 | decd5f45 | Iustin Pop | logger.Error("Can't find this device-visible name '%s'" % swap_disk)
|
478 | decd5f45 | Iustin Pop | return False |
479 | decd5f45 | Iustin Pop | |
480 | decd5f45 | Iustin Pop | real_os_dev = _RecursiveFindBD(os_device) |
481 | decd5f45 | Iustin Pop | if real_os_dev is None: |
482 | decd5f45 | Iustin Pop | raise errors.BlockDeviceError("Block device '%s' is not set up" % |
483 | decd5f45 | Iustin Pop | str(os_device))
|
484 | decd5f45 | Iustin Pop | real_os_dev.Open() |
485 | decd5f45 | Iustin Pop | |
486 | decd5f45 | Iustin Pop | real_swap_dev = _RecursiveFindBD(swap_device) |
487 | decd5f45 | Iustin Pop | if real_swap_dev is None: |
488 | decd5f45 | Iustin Pop | raise errors.BlockDeviceError("Block device '%s' is not set up" % |
489 | decd5f45 | Iustin Pop | str(swap_device))
|
490 | decd5f45 | Iustin Pop | real_swap_dev.Open() |
491 | decd5f45 | Iustin Pop | |
492 | decd5f45 | Iustin Pop | logfile = "%s/rename-%s-%s-%s-%d.log" % (constants.LOG_OS_DIR, instance.os,
|
493 | decd5f45 | Iustin Pop | old_name, |
494 | decd5f45 | Iustin Pop | instance.name, int(time.time()))
|
495 | decd5f45 | Iustin Pop | if not os.path.exists(constants.LOG_OS_DIR): |
496 | decd5f45 | Iustin Pop | os.mkdir(constants.LOG_OS_DIR, 0750)
|
497 | decd5f45 | Iustin Pop | |
498 | decd5f45 | Iustin Pop | command = utils.BuildShellCmd("cd %s && %s -o %s -n %s -b %s -s %s &>%s",
|
499 | decd5f45 | Iustin Pop | inst_os.path, script, old_name, instance.name, |
500 | decd5f45 | Iustin Pop | real_os_dev.dev_path, real_swap_dev.dev_path, |
501 | decd5f45 | Iustin Pop | logfile) |
502 | a8083063 | Iustin Pop | |
503 | a8083063 | Iustin Pop | result = utils.RunCmd(command) |
504 | a8083063 | Iustin Pop | |
505 | a8083063 | Iustin Pop | if result.failed:
|
506 | a8083063 | Iustin Pop | logger.Error("os create command '%s' returned error: %s"
|
507 | a8083063 | Iustin Pop | " output: %s" %
|
508 | a8083063 | Iustin Pop | (command, result.fail_reason, result.output)) |
509 | a8083063 | Iustin Pop | return False |
510 | a8083063 | Iustin Pop | |
511 | a8083063 | Iustin Pop | return True |
512 | a8083063 | Iustin Pop | |
513 | a8083063 | Iustin Pop | |
514 | a8083063 | Iustin Pop | def _GetVGInfo(vg_name): |
515 | a8083063 | Iustin Pop | """Get informations about the volume group.
|
516 | a8083063 | Iustin Pop |
|
517 | a8083063 | Iustin Pop | Args:
|
518 | a8083063 | Iustin Pop | vg_name: the volume group
|
519 | a8083063 | Iustin Pop |
|
520 | a8083063 | Iustin Pop | Returns:
|
521 | a8083063 | Iustin Pop | { 'vg_size' : xxx, 'vg_free' : xxx, 'pv_count' : xxx }
|
522 | a8083063 | Iustin Pop | where
|
523 | a8083063 | Iustin Pop | vg_size is the total size of the volume group in MiB
|
524 | a8083063 | Iustin Pop | vg_free is the free size of the volume group in MiB
|
525 | a8083063 | Iustin Pop | pv_count are the number of physical disks in that vg
|
526 | a8083063 | Iustin Pop |
|
527 | f4d377e7 | Iustin Pop | If an error occurs during gathering of data, we return the same dict
|
528 | f4d377e7 | Iustin Pop | with keys all set to None.
|
529 | f4d377e7 | Iustin Pop |
|
530 | a8083063 | Iustin Pop | """
|
531 | f4d377e7 | Iustin Pop | retdic = dict.fromkeys(["vg_size", "vg_free", "pv_count"]) |
532 | f4d377e7 | Iustin Pop | |
533 | a8083063 | Iustin Pop | retval = utils.RunCmd(["vgs", "-ovg_size,vg_free,pv_count", "--noheadings", |
534 | a8083063 | Iustin Pop | "--nosuffix", "--units=m", "--separator=:", vg_name]) |
535 | a8083063 | Iustin Pop | |
536 | a8083063 | Iustin Pop | if retval.failed:
|
537 | a8083063 | Iustin Pop | errmsg = "volume group %s not present" % vg_name
|
538 | a8083063 | Iustin Pop | logger.Error(errmsg) |
539 | f4d377e7 | Iustin Pop | return retdic
|
540 | d87ae7d2 | Iustin Pop | valarr = retval.stdout.strip().rstrip(':').split(':') |
541 | f4d377e7 | Iustin Pop | if len(valarr) == 3: |
542 | f4d377e7 | Iustin Pop | try:
|
543 | f4d377e7 | Iustin Pop | retdic = { |
544 | f4d377e7 | Iustin Pop | "vg_size": int(round(float(valarr[0]), 0)), |
545 | f4d377e7 | Iustin Pop | "vg_free": int(round(float(valarr[1]), 0)), |
546 | f4d377e7 | Iustin Pop | "pv_count": int(valarr[2]), |
547 | f4d377e7 | Iustin Pop | } |
548 | f4d377e7 | Iustin Pop | except ValueError, err: |
549 | f4d377e7 | Iustin Pop | logger.Error("Fail to parse vgs output: %s" % str(err)) |
550 | f4d377e7 | Iustin Pop | else:
|
551 | f4d377e7 | Iustin Pop | logger.Error("vgs output has the wrong number of fields (expected"
|
552 | f4d377e7 | Iustin Pop | " three): %s" % str(valarr)) |
553 | a8083063 | Iustin Pop | return retdic
|
554 | a8083063 | Iustin Pop | |
555 | a8083063 | Iustin Pop | |
556 | a8083063 | Iustin Pop | def _GatherBlockDevs(instance): |
557 | a8083063 | Iustin Pop | """Set up an instance's block device(s).
|
558 | a8083063 | Iustin Pop |
|
559 | a8083063 | Iustin Pop | This is run on the primary node at instance startup. The block
|
560 | a8083063 | Iustin Pop | devices must be already assembled.
|
561 | a8083063 | Iustin Pop |
|
562 | a8083063 | Iustin Pop | """
|
563 | a8083063 | Iustin Pop | block_devices = [] |
564 | a8083063 | Iustin Pop | for disk in instance.disks: |
565 | a8083063 | Iustin Pop | device = _RecursiveFindBD(disk) |
566 | a8083063 | Iustin Pop | if device is None: |
567 | a8083063 | Iustin Pop | raise errors.BlockDeviceError("Block device '%s' is not set up." % |
568 | a8083063 | Iustin Pop | str(disk))
|
569 | a8083063 | Iustin Pop | device.Open() |
570 | a8083063 | Iustin Pop | block_devices.append((disk, device)) |
571 | a8083063 | Iustin Pop | return block_devices
|
572 | a8083063 | Iustin Pop | |
573 | a8083063 | Iustin Pop | |
574 | a8083063 | Iustin Pop | def StartInstance(instance, extra_args): |
575 | a8083063 | Iustin Pop | """Start an instance.
|
576 | a8083063 | Iustin Pop |
|
577 | a8083063 | Iustin Pop | Args:
|
578 | a8083063 | Iustin Pop | instance - name of instance to start.
|
579 | a8083063 | Iustin Pop |
|
580 | 098c0958 | Michael Hanselmann | """
|
581 | a8083063 | Iustin Pop | running_instances = GetInstanceList() |
582 | a8083063 | Iustin Pop | |
583 | a8083063 | Iustin Pop | if instance.name in running_instances: |
584 | a8083063 | Iustin Pop | return True |
585 | a8083063 | Iustin Pop | |
586 | a8083063 | Iustin Pop | block_devices = _GatherBlockDevs(instance) |
587 | a8083063 | Iustin Pop | hyper = hypervisor.GetHypervisor() |
588 | a8083063 | Iustin Pop | |
589 | a8083063 | Iustin Pop | try:
|
590 | a8083063 | Iustin Pop | hyper.StartInstance(instance, block_devices, extra_args) |
591 | a8083063 | Iustin Pop | except errors.HypervisorError, err:
|
592 | a8083063 | Iustin Pop | logger.Error("Failed to start instance: %s" % err)
|
593 | a8083063 | Iustin Pop | return False |
594 | a8083063 | Iustin Pop | |
595 | a8083063 | Iustin Pop | return True |
596 | a8083063 | Iustin Pop | |
597 | a8083063 | Iustin Pop | |
598 | a8083063 | Iustin Pop | def ShutdownInstance(instance): |
599 | a8083063 | Iustin Pop | """Shut an instance down.
|
600 | a8083063 | Iustin Pop |
|
601 | a8083063 | Iustin Pop | Args:
|
602 | a8083063 | Iustin Pop | instance - name of instance to shutdown.
|
603 | a8083063 | Iustin Pop |
|
604 | 098c0958 | Michael Hanselmann | """
|
605 | a8083063 | Iustin Pop | running_instances = GetInstanceList() |
606 | a8083063 | Iustin Pop | |
607 | a8083063 | Iustin Pop | if instance.name not in running_instances: |
608 | a8083063 | Iustin Pop | return True |
609 | a8083063 | Iustin Pop | |
610 | a8083063 | Iustin Pop | hyper = hypervisor.GetHypervisor() |
611 | a8083063 | Iustin Pop | try:
|
612 | a8083063 | Iustin Pop | hyper.StopInstance(instance) |
613 | a8083063 | Iustin Pop | except errors.HypervisorError, err:
|
614 | a8083063 | Iustin Pop | logger.Error("Failed to stop instance: %s" % err)
|
615 | a8083063 | Iustin Pop | return False |
616 | a8083063 | Iustin Pop | |
617 | a8083063 | Iustin Pop | # test every 10secs for 2min
|
618 | a8083063 | Iustin Pop | shutdown_ok = False
|
619 | a8083063 | Iustin Pop | |
620 | a8083063 | Iustin Pop | time.sleep(1)
|
621 | a8083063 | Iustin Pop | for dummy in range(11): |
622 | a8083063 | Iustin Pop | if instance.name not in GetInstanceList(): |
623 | a8083063 | Iustin Pop | break
|
624 | a8083063 | Iustin Pop | time.sleep(10)
|
625 | a8083063 | Iustin Pop | else:
|
626 | a8083063 | Iustin Pop | # the shutdown did not succeed
|
627 | a8083063 | Iustin Pop | logger.Error("shutdown of '%s' unsuccessful, using destroy" % instance)
|
628 | a8083063 | Iustin Pop | |
629 | a8083063 | Iustin Pop | try:
|
630 | a8083063 | Iustin Pop | hyper.StopInstance(instance, force=True)
|
631 | a8083063 | Iustin Pop | except errors.HypervisorError, err:
|
632 | a8083063 | Iustin Pop | logger.Error("Failed to stop instance: %s" % err)
|
633 | a8083063 | Iustin Pop | return False |
634 | a8083063 | Iustin Pop | |
635 | a8083063 | Iustin Pop | time.sleep(1)
|
636 | a8083063 | Iustin Pop | if instance.name in GetInstanceList(): |
637 | a8083063 | Iustin Pop | logger.Error("could not shutdown instance '%s' even by destroy")
|
638 | a8083063 | Iustin Pop | return False |
639 | a8083063 | Iustin Pop | |
640 | a8083063 | Iustin Pop | return True |
641 | a8083063 | Iustin Pop | |
642 | a8083063 | Iustin Pop | |
643 | 007a2f3e | Alexander Schreiber | def RebootInstance(instance, reboot_type, extra_args): |
644 | 007a2f3e | Alexander Schreiber | """Reboot an instance.
|
645 | 007a2f3e | Alexander Schreiber |
|
646 | 007a2f3e | Alexander Schreiber | Args:
|
647 | 007a2f3e | Alexander Schreiber | instance - name of instance to reboot
|
648 | 007a2f3e | Alexander Schreiber | reboot_type - how to reboot [soft,hard,full]
|
649 | 007a2f3e | Alexander Schreiber |
|
650 | 007a2f3e | Alexander Schreiber | """
|
651 | 007a2f3e | Alexander Schreiber | running_instances = GetInstanceList() |
652 | 007a2f3e | Alexander Schreiber | |
653 | 007a2f3e | Alexander Schreiber | if instance.name not in running_instances: |
654 | 007a2f3e | Alexander Schreiber | logger.Error("Cannot reboot instance that is not running")
|
655 | 007a2f3e | Alexander Schreiber | return False |
656 | 007a2f3e | Alexander Schreiber | |
657 | 007a2f3e | Alexander Schreiber | hyper = hypervisor.GetHypervisor() |
658 | 007a2f3e | Alexander Schreiber | if reboot_type == constants.INSTANCE_REBOOT_SOFT:
|
659 | 007a2f3e | Alexander Schreiber | try:
|
660 | 007a2f3e | Alexander Schreiber | hyper.RebootInstance(instance) |
661 | 007a2f3e | Alexander Schreiber | except errors.HypervisorError, err:
|
662 | 007a2f3e | Alexander Schreiber | logger.Error("Failed to soft reboot instance: %s" % err)
|
663 | 007a2f3e | Alexander Schreiber | return False |
664 | 007a2f3e | Alexander Schreiber | elif reboot_type == constants.INSTANCE_REBOOT_HARD:
|
665 | 007a2f3e | Alexander Schreiber | try:
|
666 | 007a2f3e | Alexander Schreiber | ShutdownInstance(instance) |
667 | 007a2f3e | Alexander Schreiber | StartInstance(instance, extra_args) |
668 | 007a2f3e | Alexander Schreiber | except errors.HypervisorError, err:
|
669 | 007a2f3e | Alexander Schreiber | logger.Error("Failed to hard reboot instance: %s" % err)
|
670 | 007a2f3e | Alexander Schreiber | return False |
671 | 007a2f3e | Alexander Schreiber | else:
|
672 | 007a2f3e | Alexander Schreiber | raise errors.ParameterError("reboot_type invalid") |
673 | 007a2f3e | Alexander Schreiber | |
674 | 007a2f3e | Alexander Schreiber | |
675 | 007a2f3e | Alexander Schreiber | return True |
676 | 007a2f3e | Alexander Schreiber | |
677 | 007a2f3e | Alexander Schreiber | |
678 | 2a10865c | Iustin Pop | def MigrateInstance(instance, target, live): |
679 | 2a10865c | Iustin Pop | """Migrates an instance to another node.
|
680 | 2a10865c | Iustin Pop |
|
681 | 2a10865c | Iustin Pop | """
|
682 | 2a10865c | Iustin Pop | hyper = hypervisor.GetHypervisor() |
683 | 2a10865c | Iustin Pop | |
684 | 2a10865c | Iustin Pop | try:
|
685 | 2a10865c | Iustin Pop | hyper.MigrateInstance(instance, target, live) |
686 | 2a10865c | Iustin Pop | except errors.HypervisorError, err:
|
687 | 2a10865c | Iustin Pop | msg = "Failed to migrate instance: %s" % str(err) |
688 | 2a10865c | Iustin Pop | logger.Error(msg) |
689 | 2a10865c | Iustin Pop | return (False, msg) |
690 | 2a10865c | Iustin Pop | return (True, "Migration successfull") |
691 | 2a10865c | Iustin Pop | |
692 | 2a10865c | Iustin Pop | |
693 | 3f78eef2 | Iustin Pop | def CreateBlockDevice(disk, size, owner, on_primary, info): |
694 | a8083063 | Iustin Pop | """Creates a block device for an instance.
|
695 | a8083063 | Iustin Pop |
|
696 | a8083063 | Iustin Pop | Args:
|
697 | c99a3cc0 | Manuel Franceschini | disk: a ganeti.objects.Disk object
|
698 | c99a3cc0 | Manuel Franceschini | size: the size of the physical underlying device
|
699 | c99a3cc0 | Manuel Franceschini | owner: a string with the name of the instance
|
700 | 6c8af3d0 | Manuel Franceschini | on_primary: a boolean indicating if it is the primary node or not
|
701 | 6c8af3d0 | Manuel Franceschini | info: string that will be sent to the physical device creation
|
702 | a8083063 | Iustin Pop |
|
703 | a8083063 | Iustin Pop | Returns:
|
704 | a8083063 | Iustin Pop | the new unique_id of the device (this can sometime be
|
705 | a8083063 | Iustin Pop | computed only after creation), or None. On secondary nodes,
|
706 | a8083063 | Iustin Pop | it's not required to return anything.
|
707 | a8083063 | Iustin Pop |
|
708 | a8083063 | Iustin Pop | """
|
709 | a8083063 | Iustin Pop | clist = [] |
710 | a8083063 | Iustin Pop | if disk.children:
|
711 | a8083063 | Iustin Pop | for child in disk.children: |
712 | 3f78eef2 | Iustin Pop | crdev = _RecursiveAssembleBD(child, owner, on_primary) |
713 | a8083063 | Iustin Pop | if on_primary or disk.AssembleOnSecondary(): |
714 | a8083063 | Iustin Pop | # we need the children open in case the device itself has to
|
715 | a8083063 | Iustin Pop | # be assembled
|
716 | a8083063 | Iustin Pop | crdev.Open() |
717 | a8083063 | Iustin Pop | clist.append(crdev) |
718 | a8083063 | Iustin Pop | try:
|
719 | a8083063 | Iustin Pop | device = bdev.FindDevice(disk.dev_type, disk.physical_id, clist) |
720 | a8083063 | Iustin Pop | if device is not None: |
721 | a8083063 | Iustin Pop | logger.Info("removing existing device %s" % disk)
|
722 | a8083063 | Iustin Pop | device.Remove() |
723 | a8083063 | Iustin Pop | except errors.BlockDeviceError, err:
|
724 | a8083063 | Iustin Pop | pass
|
725 | a8083063 | Iustin Pop | |
726 | a8083063 | Iustin Pop | device = bdev.Create(disk.dev_type, disk.physical_id, |
727 | a8083063 | Iustin Pop | clist, size) |
728 | a8083063 | Iustin Pop | if device is None: |
729 | a8083063 | Iustin Pop | raise ValueError("Can't create child device for %s, %s" % |
730 | a8083063 | Iustin Pop | (disk, size)) |
731 | a8083063 | Iustin Pop | if on_primary or disk.AssembleOnSecondary(): |
732 | cf5a8306 | Iustin Pop | if not device.Assemble(): |
733 | 20a0c9ef | Guido Trotter | errorstring = "Can't assemble device after creation"
|
734 | 20a0c9ef | Guido Trotter | logger.Error(errorstring) |
735 | 20a0c9ef | Guido Trotter | raise errors.BlockDeviceError("%s, very unusual event - check the node" |
736 | 20a0c9ef | Guido Trotter | " daemon logs" % errorstring)
|
737 | e31c43f7 | Michael Hanselmann | device.SetSyncSpeed(constants.SYNC_SPEED) |
738 | a8083063 | Iustin Pop | if on_primary or disk.OpenOnSecondary(): |
739 | a8083063 | Iustin Pop | device.Open(force=True)
|
740 | 3f78eef2 | Iustin Pop | DevCacheManager.UpdateCache(device.dev_path, owner, |
741 | 3f78eef2 | Iustin Pop | on_primary, disk.iv_name) |
742 | a0c3fea1 | Michael Hanselmann | |
743 | a0c3fea1 | Michael Hanselmann | device.SetInfo(info) |
744 | a0c3fea1 | Michael Hanselmann | |
745 | a8083063 | Iustin Pop | physical_id = device.unique_id |
746 | a8083063 | Iustin Pop | return physical_id
|
747 | a8083063 | Iustin Pop | |
748 | a8083063 | Iustin Pop | |
749 | a8083063 | Iustin Pop | def RemoveBlockDevice(disk): |
750 | a8083063 | Iustin Pop | """Remove a block device.
|
751 | a8083063 | Iustin Pop |
|
752 | a8083063 | Iustin Pop | This is intended to be called recursively.
|
753 | a8083063 | Iustin Pop |
|
754 | a8083063 | Iustin Pop | """
|
755 | a8083063 | Iustin Pop | try:
|
756 | a8083063 | Iustin Pop | # since we are removing the device, allow a partial match
|
757 | a8083063 | Iustin Pop | # this allows removal of broken mirrors
|
758 | a8083063 | Iustin Pop | rdev = _RecursiveFindBD(disk, allow_partial=True)
|
759 | a8083063 | Iustin Pop | except errors.BlockDeviceError, err:
|
760 | a8083063 | Iustin Pop | # probably can't attach
|
761 | a8083063 | Iustin Pop | logger.Info("Can't attach to device %s in remove" % disk)
|
762 | a8083063 | Iustin Pop | rdev = None
|
763 | a8083063 | Iustin Pop | if rdev is not None: |
764 | 3f78eef2 | Iustin Pop | r_path = rdev.dev_path |
765 | a8083063 | Iustin Pop | result = rdev.Remove() |
766 | 3f78eef2 | Iustin Pop | if result:
|
767 | 3f78eef2 | Iustin Pop | DevCacheManager.RemoveCache(r_path) |
768 | a8083063 | Iustin Pop | else:
|
769 | a8083063 | Iustin Pop | result = True
|
770 | a8083063 | Iustin Pop | if disk.children:
|
771 | a8083063 | Iustin Pop | for child in disk.children: |
772 | a8083063 | Iustin Pop | result = result and RemoveBlockDevice(child)
|
773 | a8083063 | Iustin Pop | return result
|
774 | a8083063 | Iustin Pop | |
775 | a8083063 | Iustin Pop | |
776 | 3f78eef2 | Iustin Pop | def _RecursiveAssembleBD(disk, owner, as_primary): |
777 | a8083063 | Iustin Pop | """Activate a block device for an instance.
|
778 | a8083063 | Iustin Pop |
|
779 | a8083063 | Iustin Pop | This is run on the primary and secondary nodes for an instance.
|
780 | a8083063 | Iustin Pop |
|
781 | a8083063 | Iustin Pop | This function is called recursively.
|
782 | a8083063 | Iustin Pop |
|
783 | a8083063 | Iustin Pop | Args:
|
784 | a8083063 | Iustin Pop | disk: a objects.Disk object
|
785 | a8083063 | Iustin Pop | as_primary: if we should make the block device read/write
|
786 | a8083063 | Iustin Pop |
|
787 | a8083063 | Iustin Pop | Returns:
|
788 | a8083063 | Iustin Pop | the assembled device or None (in case no device was assembled)
|
789 | a8083063 | Iustin Pop |
|
790 | a8083063 | Iustin Pop | If the assembly is not successful, an exception is raised.
|
791 | a8083063 | Iustin Pop |
|
792 | a8083063 | Iustin Pop | """
|
793 | a8083063 | Iustin Pop | children = [] |
794 | a8083063 | Iustin Pop | if disk.children:
|
795 | fc1dc9d7 | Iustin Pop | mcn = disk.ChildrenNeeded() |
796 | fc1dc9d7 | Iustin Pop | if mcn == -1: |
797 | fc1dc9d7 | Iustin Pop | mcn = 0 # max number of Nones allowed |
798 | fc1dc9d7 | Iustin Pop | else:
|
799 | fc1dc9d7 | Iustin Pop | mcn = len(disk.children) - mcn # max number of Nones |
800 | a8083063 | Iustin Pop | for chld_disk in disk.children: |
801 | fc1dc9d7 | Iustin Pop | try:
|
802 | fc1dc9d7 | Iustin Pop | cdev = _RecursiveAssembleBD(chld_disk, owner, as_primary) |
803 | fc1dc9d7 | Iustin Pop | except errors.BlockDeviceError, err:
|
804 | 7803d4d3 | Iustin Pop | if children.count(None) >= mcn: |
805 | fc1dc9d7 | Iustin Pop | raise
|
806 | fc1dc9d7 | Iustin Pop | cdev = None
|
807 | fc1dc9d7 | Iustin Pop | logger.Debug("Error in child activation: %s" % str(err)) |
808 | fc1dc9d7 | Iustin Pop | children.append(cdev) |
809 | a8083063 | Iustin Pop | |
810 | a8083063 | Iustin Pop | if as_primary or disk.AssembleOnSecondary(): |
811 | a8083063 | Iustin Pop | r_dev = bdev.AttachOrAssemble(disk.dev_type, disk.physical_id, children) |
812 | e31c43f7 | Michael Hanselmann | r_dev.SetSyncSpeed(constants.SYNC_SPEED) |
813 | a8083063 | Iustin Pop | result = r_dev |
814 | a8083063 | Iustin Pop | if as_primary or disk.OpenOnSecondary(): |
815 | a8083063 | Iustin Pop | r_dev.Open() |
816 | 3f78eef2 | Iustin Pop | DevCacheManager.UpdateCache(r_dev.dev_path, owner, |
817 | 3f78eef2 | Iustin Pop | as_primary, disk.iv_name) |
818 | 3f78eef2 | Iustin Pop | |
819 | a8083063 | Iustin Pop | else:
|
820 | a8083063 | Iustin Pop | result = True
|
821 | a8083063 | Iustin Pop | return result
|
822 | a8083063 | Iustin Pop | |
823 | a8083063 | Iustin Pop | |
824 | 3f78eef2 | Iustin Pop | def AssembleBlockDevice(disk, owner, as_primary): |
825 | a8083063 | Iustin Pop | """Activate a block device for an instance.
|
826 | a8083063 | Iustin Pop |
|
827 | a8083063 | Iustin Pop | This is a wrapper over _RecursiveAssembleBD.
|
828 | a8083063 | Iustin Pop |
|
829 | a8083063 | Iustin Pop | Returns:
|
830 | a8083063 | Iustin Pop | a /dev path for primary nodes
|
831 | a8083063 | Iustin Pop | True for secondary nodes
|
832 | a8083063 | Iustin Pop |
|
833 | a8083063 | Iustin Pop | """
|
834 | 3f78eef2 | Iustin Pop | result = _RecursiveAssembleBD(disk, owner, as_primary) |
835 | a8083063 | Iustin Pop | if isinstance(result, bdev.BlockDev): |
836 | a8083063 | Iustin Pop | result = result.dev_path |
837 | a8083063 | Iustin Pop | return result
|
838 | a8083063 | Iustin Pop | |
839 | a8083063 | Iustin Pop | |
840 | a8083063 | Iustin Pop | def ShutdownBlockDevice(disk): |
841 | a8083063 | Iustin Pop | """Shut down a block device.
|
842 | a8083063 | Iustin Pop |
|
843 | a8083063 | Iustin Pop | First, if the device is assembled (can `Attach()`), then the device
|
844 | a8083063 | Iustin Pop | is shutdown. Then the children of the device are shutdown.
|
845 | a8083063 | Iustin Pop |
|
846 | a8083063 | Iustin Pop | This function is called recursively. Note that we don't cache the
|
847 | a8083063 | Iustin Pop | children or such, as oppossed to assemble, shutdown of different
|
848 | a8083063 | Iustin Pop | devices doesn't require that the upper device was active.
|
849 | a8083063 | Iustin Pop |
|
850 | a8083063 | Iustin Pop | """
|
851 | a8083063 | Iustin Pop | r_dev = _RecursiveFindBD(disk) |
852 | a8083063 | Iustin Pop | if r_dev is not None: |
853 | 3f78eef2 | Iustin Pop | r_path = r_dev.dev_path |
854 | a8083063 | Iustin Pop | result = r_dev.Shutdown() |
855 | 3f78eef2 | Iustin Pop | if result:
|
856 | 3f78eef2 | Iustin Pop | DevCacheManager.RemoveCache(r_path) |
857 | a8083063 | Iustin Pop | else:
|
858 | a8083063 | Iustin Pop | result = True
|
859 | a8083063 | Iustin Pop | if disk.children:
|
860 | a8083063 | Iustin Pop | for child in disk.children: |
861 | a8083063 | Iustin Pop | result = result and ShutdownBlockDevice(child)
|
862 | a8083063 | Iustin Pop | return result
|
863 | a8083063 | Iustin Pop | |
864 | a8083063 | Iustin Pop | |
865 | 153d9724 | Iustin Pop | def MirrorAddChildren(parent_cdev, new_cdevs): |
866 | 153d9724 | Iustin Pop | """Extend a mirrored block device.
|
867 | a8083063 | Iustin Pop |
|
868 | a8083063 | Iustin Pop | """
|
869 | 153d9724 | Iustin Pop | parent_bdev = _RecursiveFindBD(parent_cdev, allow_partial=True)
|
870 | 153d9724 | Iustin Pop | if parent_bdev is None: |
871 | 153d9724 | Iustin Pop | logger.Error("Can't find parent device")
|
872 | a8083063 | Iustin Pop | return False |
873 | 153d9724 | Iustin Pop | new_bdevs = [_RecursiveFindBD(disk) for disk in new_cdevs] |
874 | 153d9724 | Iustin Pop | if new_bdevs.count(None) > 0: |
875 | a9e0c397 | Iustin Pop | logger.Error("Can't find new device(s) to add: %s:%s" %
|
876 | a9e0c397 | Iustin Pop | (new_bdevs, new_cdevs)) |
877 | a8083063 | Iustin Pop | return False |
878 | 153d9724 | Iustin Pop | parent_bdev.AddChildren(new_bdevs) |
879 | a8083063 | Iustin Pop | return True |
880 | a8083063 | Iustin Pop | |
881 | a8083063 | Iustin Pop | |
882 | 153d9724 | Iustin Pop | def MirrorRemoveChildren(parent_cdev, new_cdevs): |
883 | 153d9724 | Iustin Pop | """Shrink a mirrored block device.
|
884 | a8083063 | Iustin Pop |
|
885 | a8083063 | Iustin Pop | """
|
886 | 153d9724 | Iustin Pop | parent_bdev = _RecursiveFindBD(parent_cdev) |
887 | 153d9724 | Iustin Pop | if parent_bdev is None: |
888 | a9e0c397 | Iustin Pop | logger.Error("Can't find parent in remove children: %s" % parent_cdev)
|
889 | a8083063 | Iustin Pop | return False |
890 | e739bd57 | Iustin Pop | devs = [] |
891 | e739bd57 | Iustin Pop | for disk in new_cdevs: |
892 | e739bd57 | Iustin Pop | rpath = disk.StaticDevPath() |
893 | e739bd57 | Iustin Pop | if rpath is None: |
894 | e739bd57 | Iustin Pop | bd = _RecursiveFindBD(disk) |
895 | e739bd57 | Iustin Pop | if bd is None: |
896 | e739bd57 | Iustin Pop | logger.Error("Can't find dynamic device %s while removing children" %
|
897 | e739bd57 | Iustin Pop | disk) |
898 | e739bd57 | Iustin Pop | return False |
899 | e739bd57 | Iustin Pop | else:
|
900 | e739bd57 | Iustin Pop | devs.append(bd.dev_path) |
901 | e739bd57 | Iustin Pop | else:
|
902 | e739bd57 | Iustin Pop | devs.append(rpath) |
903 | e739bd57 | Iustin Pop | parent_bdev.RemoveChildren(devs) |
904 | a8083063 | Iustin Pop | return True |
905 | a8083063 | Iustin Pop | |
906 | a8083063 | Iustin Pop | |
907 | a8083063 | Iustin Pop | def GetMirrorStatus(disks): |
908 | a8083063 | Iustin Pop | """Get the mirroring status of a list of devices.
|
909 | a8083063 | Iustin Pop |
|
910 | a8083063 | Iustin Pop | Args:
|
911 | a8083063 | Iustin Pop | disks: list of `objects.Disk`
|
912 | a8083063 | Iustin Pop |
|
913 | a8083063 | Iustin Pop | Returns:
|
914 | a8083063 | Iustin Pop | list of (mirror_done, estimated_time) tuples, which
|
915 | a8083063 | Iustin Pop | are the result of bdev.BlockDevice.CombinedSyncStatus()
|
916 | a8083063 | Iustin Pop |
|
917 | a8083063 | Iustin Pop | """
|
918 | a8083063 | Iustin Pop | stats = [] |
919 | a8083063 | Iustin Pop | for dsk in disks: |
920 | a8083063 | Iustin Pop | rbd = _RecursiveFindBD(dsk) |
921 | a8083063 | Iustin Pop | if rbd is None: |
922 | 3ecf6786 | Iustin Pop | raise errors.BlockDeviceError("Can't find device %s" % str(dsk)) |
923 | a8083063 | Iustin Pop | stats.append(rbd.CombinedSyncStatus()) |
924 | a8083063 | Iustin Pop | return stats
|
925 | a8083063 | Iustin Pop | |
926 | a8083063 | Iustin Pop | |
927 | a8083063 | Iustin Pop | def _RecursiveFindBD(disk, allow_partial=False): |
928 | a8083063 | Iustin Pop | """Check if a device is activated.
|
929 | a8083063 | Iustin Pop |
|
930 | a8083063 | Iustin Pop | If so, return informations about the real device.
|
931 | a8083063 | Iustin Pop |
|
932 | a8083063 | Iustin Pop | Args:
|
933 | a8083063 | Iustin Pop | disk: the objects.Disk instance
|
934 | a8083063 | Iustin Pop | allow_partial: don't abort the find if a child of the
|
935 | a8083063 | Iustin Pop | device can't be found; this is intended to be
|
936 | a8083063 | Iustin Pop | used when repairing mirrors
|
937 | a8083063 | Iustin Pop |
|
938 | a8083063 | Iustin Pop | Returns:
|
939 | a8083063 | Iustin Pop | None if the device can't be found
|
940 | a8083063 | Iustin Pop | otherwise the device instance
|
941 | a8083063 | Iustin Pop |
|
942 | a8083063 | Iustin Pop | """
|
943 | a8083063 | Iustin Pop | children = [] |
944 | a8083063 | Iustin Pop | if disk.children:
|
945 | a8083063 | Iustin Pop | for chdisk in disk.children: |
946 | a8083063 | Iustin Pop | children.append(_RecursiveFindBD(chdisk)) |
947 | a8083063 | Iustin Pop | |
948 | a8083063 | Iustin Pop | return bdev.FindDevice(disk.dev_type, disk.physical_id, children)
|
949 | a8083063 | Iustin Pop | |
950 | a8083063 | Iustin Pop | |
951 | a8083063 | Iustin Pop | def FindBlockDevice(disk): |
952 | a8083063 | Iustin Pop | """Check if a device is activated.
|
953 | a8083063 | Iustin Pop |
|
954 | a8083063 | Iustin Pop | If so, return informations about the real device.
|
955 | a8083063 | Iustin Pop |
|
956 | a8083063 | Iustin Pop | Args:
|
957 | a8083063 | Iustin Pop | disk: the objects.Disk instance
|
958 | a8083063 | Iustin Pop | Returns:
|
959 | a8083063 | Iustin Pop | None if the device can't be found
|
960 | a8083063 | Iustin Pop | (device_path, major, minor, sync_percent, estimated_time, is_degraded)
|
961 | a8083063 | Iustin Pop |
|
962 | a8083063 | Iustin Pop | """
|
963 | a8083063 | Iustin Pop | rbd = _RecursiveFindBD(disk) |
964 | a8083063 | Iustin Pop | if rbd is None: |
965 | a8083063 | Iustin Pop | return rbd
|
966 | 0834c866 | Iustin Pop | return (rbd.dev_path, rbd.major, rbd.minor) + rbd.GetSyncStatus()
|
967 | a8083063 | Iustin Pop | |
968 | a8083063 | Iustin Pop | |
969 | a8083063 | Iustin Pop | def UploadFile(file_name, data, mode, uid, gid, atime, mtime): |
970 | a8083063 | Iustin Pop | """Write a file to the filesystem.
|
971 | a8083063 | Iustin Pop |
|
972 | a8083063 | Iustin Pop | This allows the master to overwrite(!) a file. It will only perform
|
973 | a8083063 | Iustin Pop | the operation if the file belongs to a list of configuration files.
|
974 | a8083063 | Iustin Pop |
|
975 | a8083063 | Iustin Pop | """
|
976 | a8083063 | Iustin Pop | if not os.path.isabs(file_name): |
977 | a8083063 | Iustin Pop | logger.Error("Filename passed to UploadFile is not absolute: '%s'" %
|
978 | a8083063 | Iustin Pop | file_name) |
979 | a8083063 | Iustin Pop | return False |
980 | a8083063 | Iustin Pop | |
981 | 97628462 | Iustin Pop | allowed_files = [ |
982 | 97628462 | Iustin Pop | constants.CLUSTER_CONF_FILE, |
983 | 97628462 | Iustin Pop | constants.ETC_HOSTS, |
984 | 97628462 | Iustin Pop | constants.SSH_KNOWN_HOSTS_FILE, |
985 | 90fae627 | Guido Trotter | constants.VNC_PASSWORD_FILE, |
986 | 97628462 | Iustin Pop | ] |
987 | 880478f8 | Iustin Pop | allowed_files.extend(ssconf.SimpleStore().GetFileList()) |
988 | 880478f8 | Iustin Pop | if file_name not in allowed_files: |
989 | a8083063 | Iustin Pop | logger.Error("Filename passed to UploadFile not in allowed"
|
990 | a8083063 | Iustin Pop | " upload targets: '%s'" % file_name)
|
991 | a8083063 | Iustin Pop | return False |
992 | a8083063 | Iustin Pop | |
993 | 41a57aab | Michael Hanselmann | utils.WriteFile(file_name, data=data, mode=mode, uid=uid, gid=gid, |
994 | 41a57aab | Michael Hanselmann | atime=atime, mtime=mtime) |
995 | a8083063 | Iustin Pop | return True |
996 | a8083063 | Iustin Pop | |
997 | 386b57af | Iustin Pop | |
998 | a8083063 | Iustin Pop | def _ErrnoOrStr(err): |
999 | a8083063 | Iustin Pop | """Format an EnvironmentError exception.
|
1000 | a8083063 | Iustin Pop |
|
1001 | a8083063 | Iustin Pop | If the `err` argument has an errno attribute, it will be looked up
|
1002 | a8083063 | Iustin Pop | and converted into a textual EXXXX description. Otherwise the string
|
1003 | a8083063 | Iustin Pop | representation of the error will be returned.
|
1004 | a8083063 | Iustin Pop |
|
1005 | a8083063 | Iustin Pop | """
|
1006 | a8083063 | Iustin Pop | if hasattr(err, 'errno'): |
1007 | a8083063 | Iustin Pop | detail = errno.errorcode[err.errno] |
1008 | a8083063 | Iustin Pop | else:
|
1009 | a8083063 | Iustin Pop | detail = str(err)
|
1010 | a8083063 | Iustin Pop | return detail
|
1011 | a8083063 | Iustin Pop | |
1012 | 5d0fe286 | Iustin Pop | |
1013 | c26dabd7 | Guido Trotter | def _OSOndiskVersion(name, os_dir): |
1014 | 2f8598a5 | Alexander Schreiber | """Compute and return the API version of a given OS.
|
1015 | a8083063 | Iustin Pop |
|
1016 | 2f8598a5 | Alexander Schreiber | This function will try to read the API version of the os given by
|
1017 | 7c3d51d4 | Guido Trotter | the 'name' parameter and residing in the 'os_dir' directory.
|
1018 | 7c3d51d4 | Guido Trotter |
|
1019 | 7c3d51d4 | Guido Trotter | Return value will be either an integer denoting the version or None in the
|
1020 | 7c3d51d4 | Guido Trotter | case when this is not a valid OS name.
|
1021 | a8083063 | Iustin Pop |
|
1022 | a8083063 | Iustin Pop | """
|
1023 | a8083063 | Iustin Pop | api_file = os.path.sep.join([os_dir, "ganeti_api_version"])
|
1024 | a8083063 | Iustin Pop | |
1025 | a8083063 | Iustin Pop | try:
|
1026 | a8083063 | Iustin Pop | st = os.stat(api_file) |
1027 | a8083063 | Iustin Pop | except EnvironmentError, err: |
1028 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir, "'ganeti_api_version' file not" |
1029 | 3ecf6786 | Iustin Pop | " found (%s)" % _ErrnoOrStr(err))
|
1030 | a8083063 | Iustin Pop | |
1031 | a8083063 | Iustin Pop | if not stat.S_ISREG(stat.S_IFMT(st.st_mode)): |
1032 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir, "'ganeti_api_version' file is not" |
1033 | 3ecf6786 | Iustin Pop | " a regular file")
|
1034 | a8083063 | Iustin Pop | |
1035 | a8083063 | Iustin Pop | try:
|
1036 | a8083063 | Iustin Pop | f = open(api_file)
|
1037 | a8083063 | Iustin Pop | try:
|
1038 | a8083063 | Iustin Pop | api_version = f.read(256)
|
1039 | a8083063 | Iustin Pop | finally:
|
1040 | a8083063 | Iustin Pop | f.close() |
1041 | a8083063 | Iustin Pop | except EnvironmentError, err: |
1042 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir, "error while reading the" |
1043 | 3ecf6786 | Iustin Pop | " API version (%s)" % _ErrnoOrStr(err))
|
1044 | a8083063 | Iustin Pop | |
1045 | a8083063 | Iustin Pop | api_version = api_version.strip() |
1046 | a8083063 | Iustin Pop | try:
|
1047 | a8083063 | Iustin Pop | api_version = int(api_version)
|
1048 | a8083063 | Iustin Pop | except (TypeError, ValueError), err: |
1049 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir,
|
1050 | 305a7297 | Guido Trotter | "API version is not integer (%s)" % str(err)) |
1051 | a8083063 | Iustin Pop | |
1052 | a8083063 | Iustin Pop | return api_version
|
1053 | a8083063 | Iustin Pop | |
1054 | 386b57af | Iustin Pop | |
1055 | 7c3d51d4 | Guido Trotter | def DiagnoseOS(top_dirs=None): |
1056 | a8083063 | Iustin Pop | """Compute the validity for all OSes.
|
1057 | a8083063 | Iustin Pop |
|
1058 | 8fa42c7c | Guido Trotter | Returns an OS object for each name in all the given top directories
|
1059 | 8fa42c7c | Guido Trotter | (if not given defaults to constants.OS_SEARCH_PATH)
|
1060 | a8083063 | Iustin Pop |
|
1061 | a8083063 | Iustin Pop | Returns:
|
1062 | 8fa42c7c | Guido Trotter | list of OS objects
|
1063 | a8083063 | Iustin Pop |
|
1064 | a8083063 | Iustin Pop | """
|
1065 | 7c3d51d4 | Guido Trotter | if top_dirs is None: |
1066 | 7c3d51d4 | Guido Trotter | top_dirs = constants.OS_SEARCH_PATH |
1067 | a8083063 | Iustin Pop | |
1068 | a8083063 | Iustin Pop | result = [] |
1069 | 65fe4693 | Iustin Pop | for dir_name in top_dirs: |
1070 | 65fe4693 | Iustin Pop | if os.path.isdir(dir_name):
|
1071 | 7c3d51d4 | Guido Trotter | try:
|
1072 | 65fe4693 | Iustin Pop | f_names = utils.ListVisibleFiles(dir_name) |
1073 | 7c3d51d4 | Guido Trotter | except EnvironmentError, err: |
1074 | 65fe4693 | Iustin Pop | logger.Error("Can't list the OS directory %s: %s" %
|
1075 | 65fe4693 | Iustin Pop | (dir_name, str(err)))
|
1076 | 7c3d51d4 | Guido Trotter | break
|
1077 | 7c3d51d4 | Guido Trotter | for name in f_names: |
1078 | 7c3d51d4 | Guido Trotter | try:
|
1079 | 65fe4693 | Iustin Pop | os_inst = OSFromDisk(name, base_dir=dir_name) |
1080 | 7c3d51d4 | Guido Trotter | result.append(os_inst) |
1081 | 7c3d51d4 | Guido Trotter | except errors.InvalidOS, err:
|
1082 | 8fa42c7c | Guido Trotter | result.append(objects.OS.FromInvalidOS(err)) |
1083 | a8083063 | Iustin Pop | |
1084 | a8083063 | Iustin Pop | return result
|
1085 | a8083063 | Iustin Pop | |
1086 | a8083063 | Iustin Pop | |
1087 | 56bcd3f4 | Guido Trotter | def OSFromDisk(name, base_dir=None): |
1088 | a8083063 | Iustin Pop | """Create an OS instance from disk.
|
1089 | a8083063 | Iustin Pop |
|
1090 | a8083063 | Iustin Pop | This function will return an OS instance if the given name is a
|
1091 | a8083063 | Iustin Pop | valid OS name. Otherwise, it will raise an appropriate
|
1092 | a8083063 | Iustin Pop | `errors.InvalidOS` exception, detailing why this is not a valid
|
1093 | a8083063 | Iustin Pop | OS.
|
1094 | a8083063 | Iustin Pop |
|
1095 | 7c3d51d4 | Guido Trotter | Args:
|
1096 | 7c3d51d4 | Guido Trotter | os_dir: Directory containing the OS scripts. Defaults to a search
|
1097 | 7c3d51d4 | Guido Trotter | in all the OS_SEARCH_PATH directories.
|
1098 | 7c3d51d4 | Guido Trotter |
|
1099 | a8083063 | Iustin Pop | """
|
1100 | 7c3d51d4 | Guido Trotter | |
1101 | 56bcd3f4 | Guido Trotter | if base_dir is None: |
1102 | 57c177af | Iustin Pop | os_dir = utils.FindFile(name, constants.OS_SEARCH_PATH, os.path.isdir) |
1103 | c34c0cfd | Iustin Pop | if os_dir is None: |
1104 | c34c0cfd | Iustin Pop | raise errors.InvalidOS(name, None, "OS dir not found in search path") |
1105 | c34c0cfd | Iustin Pop | else:
|
1106 | c34c0cfd | Iustin Pop | os_dir = os.path.sep.join([base_dir, name]) |
1107 | a8083063 | Iustin Pop | |
1108 | c26dabd7 | Guido Trotter | api_version = _OSOndiskVersion(name, os_dir) |
1109 | a8083063 | Iustin Pop | |
1110 | a8083063 | Iustin Pop | if api_version != constants.OS_API_VERSION:
|
1111 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir, "API version mismatch" |
1112 | 305a7297 | Guido Trotter | " (found %s want %s)"
|
1113 | 3ecf6786 | Iustin Pop | % (api_version, constants.OS_API_VERSION)) |
1114 | a8083063 | Iustin Pop | |
1115 | a8083063 | Iustin Pop | # OS Scripts dictionary, we will populate it with the actual script names
|
1116 | 386b57af | Iustin Pop | os_scripts = {'create': '', 'export': '', 'import': '', 'rename': ''} |
1117 | a8083063 | Iustin Pop | |
1118 | a8083063 | Iustin Pop | for script in os_scripts: |
1119 | a8083063 | Iustin Pop | os_scripts[script] = os.path.sep.join([os_dir, script]) |
1120 | a8083063 | Iustin Pop | |
1121 | a8083063 | Iustin Pop | try:
|
1122 | a8083063 | Iustin Pop | st = os.stat(os_scripts[script]) |
1123 | a8083063 | Iustin Pop | except EnvironmentError, err: |
1124 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir, "'%s' script missing (%s)" % |
1125 | 3ecf6786 | Iustin Pop | (script, _ErrnoOrStr(err))) |
1126 | a8083063 | Iustin Pop | |
1127 | a8083063 | Iustin Pop | if stat.S_IMODE(st.st_mode) & stat.S_IXUSR != stat.S_IXUSR:
|
1128 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir, "'%s' script not executable" % |
1129 | 305a7297 | Guido Trotter | script) |
1130 | a8083063 | Iustin Pop | |
1131 | a8083063 | Iustin Pop | if not stat.S_ISREG(stat.S_IFMT(st.st_mode)): |
1132 | 305a7297 | Guido Trotter | raise errors.InvalidOS(name, os_dir, "'%s' is not a regular file" % |
1133 | 305a7297 | Guido Trotter | script) |
1134 | a8083063 | Iustin Pop | |
1135 | a8083063 | Iustin Pop | |
1136 | 8fa42c7c | Guido Trotter | return objects.OS(name=name, path=os_dir, status=constants.OS_VALID_STATUS,
|
1137 | a8083063 | Iustin Pop | create_script=os_scripts['create'],
|
1138 | a8083063 | Iustin Pop | export_script=os_scripts['export'],
|
1139 | a8083063 | Iustin Pop | import_script=os_scripts['import'],
|
1140 | 386b57af | Iustin Pop | rename_script=os_scripts['rename'],
|
1141 | a8083063 | Iustin Pop | api_version=api_version) |
1142 | a8083063 | Iustin Pop | |
1143 | a8083063 | Iustin Pop | |
1144 | 594609c0 | Iustin Pop | def GrowBlockDevice(disk, amount): |
1145 | 594609c0 | Iustin Pop | """Grow a stack of block devices.
|
1146 | 594609c0 | Iustin Pop |
|
1147 | 594609c0 | Iustin Pop | This function is called recursively, with the childrens being the
|
1148 | 594609c0 | Iustin Pop | first one resize.
|
1149 | 594609c0 | Iustin Pop |
|
1150 | 594609c0 | Iustin Pop | Args:
|
1151 | 594609c0 | Iustin Pop | disk: the disk to be grown
|
1152 | 594609c0 | Iustin Pop |
|
1153 | 594609c0 | Iustin Pop | Returns: a tuple of (status, result), with:
|
1154 | 594609c0 | Iustin Pop | status: the result (true/false) of the operation
|
1155 | 594609c0 | Iustin Pop | result: the error message if the operation failed, otherwise not used
|
1156 | 594609c0 | Iustin Pop |
|
1157 | 594609c0 | Iustin Pop | """
|
1158 | 594609c0 | Iustin Pop | r_dev = _RecursiveFindBD(disk) |
1159 | 594609c0 | Iustin Pop | if r_dev is None: |
1160 | 594609c0 | Iustin Pop | return False, "Cannot find block device %s" % (disk,) |
1161 | 594609c0 | Iustin Pop | |
1162 | 594609c0 | Iustin Pop | try:
|
1163 | 594609c0 | Iustin Pop | r_dev.Grow(amount) |
1164 | 594609c0 | Iustin Pop | except errors.BlockDeviceError, err:
|
1165 | 594609c0 | Iustin Pop | return False, str(err) |
1166 | 594609c0 | Iustin Pop | |
1167 | 594609c0 | Iustin Pop | return True, None |
1168 | 594609c0 | Iustin Pop | |
1169 | 594609c0 | Iustin Pop | |
1170 | a8083063 | Iustin Pop | def SnapshotBlockDevice(disk): |
1171 | a8083063 | Iustin Pop | """Create a snapshot copy of a block device.
|
1172 | a8083063 | Iustin Pop |
|
1173 | a8083063 | Iustin Pop | This function is called recursively, and the snapshot is actually created
|
1174 | a8083063 | Iustin Pop | just for the leaf lvm backend device.
|
1175 | a8083063 | Iustin Pop |
|
1176 | a8083063 | Iustin Pop | Args:
|
1177 | a8083063 | Iustin Pop | disk: the disk to be snapshotted
|
1178 | a8083063 | Iustin Pop |
|
1179 | a8083063 | Iustin Pop | Returns:
|
1180 | a8083063 | Iustin Pop | a config entry for the actual lvm device snapshotted.
|
1181 | a8083063 | Iustin Pop |
|
1182 | 098c0958 | Michael Hanselmann | """
|
1183 | a8083063 | Iustin Pop | if disk.children:
|
1184 | a8083063 | Iustin Pop | if len(disk.children) == 1: |
1185 | a8083063 | Iustin Pop | # only one child, let's recurse on it
|
1186 | a8083063 | Iustin Pop | return SnapshotBlockDevice(disk.children[0]) |
1187 | a8083063 | Iustin Pop | else:
|
1188 | a8083063 | Iustin Pop | # more than one child, choose one that matches
|
1189 | a8083063 | Iustin Pop | for child in disk.children: |
1190 | a8083063 | Iustin Pop | if child.size == disk.size:
|
1191 | a8083063 | Iustin Pop | # return implies breaking the loop
|
1192 | a8083063 | Iustin Pop | return SnapshotBlockDevice(child)
|
1193 | fe96220b | Iustin Pop | elif disk.dev_type == constants.LD_LV:
|
1194 | a8083063 | Iustin Pop | r_dev = _RecursiveFindBD(disk) |
1195 | a8083063 | Iustin Pop | if r_dev is not None: |
1196 | a8083063 | Iustin Pop | # let's stay on the safe side and ask for the full size, for now
|
1197 | a8083063 | Iustin Pop | return r_dev.Snapshot(disk.size)
|
1198 | a8083063 | Iustin Pop | else:
|
1199 | a8083063 | Iustin Pop | return None |
1200 | a8083063 | Iustin Pop | else:
|
1201 | 3ecf6786 | Iustin Pop | raise errors.ProgrammerError("Cannot snapshot non-lvm block device" |
1202 | f4bc1f2c | Michael Hanselmann | " '%s' of type '%s'" %
|
1203 | 3ecf6786 | Iustin Pop | (disk.unique_id, disk.dev_type)) |
1204 | a8083063 | Iustin Pop | |
1205 | a8083063 | Iustin Pop | |
1206 | a8083063 | Iustin Pop | def ExportSnapshot(disk, dest_node, instance): |
1207 | a8083063 | Iustin Pop | """Export a block device snapshot to a remote node.
|
1208 | a8083063 | Iustin Pop |
|
1209 | a8083063 | Iustin Pop | Args:
|
1210 | a8083063 | Iustin Pop | disk: the snapshot block device
|
1211 | a8083063 | Iustin Pop | dest_node: the node to send the image to
|
1212 | a8083063 | Iustin Pop | instance: instance being exported
|
1213 | a8083063 | Iustin Pop |
|
1214 | a8083063 | Iustin Pop | Returns:
|
1215 | a8083063 | Iustin Pop | True if successful, False otherwise.
|
1216 | a8083063 | Iustin Pop |
|
1217 | 098c0958 | Michael Hanselmann | """
|
1218 | a8083063 | Iustin Pop | inst_os = OSFromDisk(instance.os) |
1219 | a8083063 | Iustin Pop | export_script = inst_os.export_script |
1220 | a8083063 | Iustin Pop | |
1221 | a8083063 | Iustin Pop | logfile = "%s/exp-%s-%s-%s.log" % (constants.LOG_OS_DIR, inst_os.name,
|
1222 | a8083063 | Iustin Pop | instance.name, int(time.time()))
|
1223 | a8083063 | Iustin Pop | if not os.path.exists(constants.LOG_OS_DIR): |
1224 | a8083063 | Iustin Pop | os.mkdir(constants.LOG_OS_DIR, 0750)
|
1225 | a8083063 | Iustin Pop | |
1226 | a8083063 | Iustin Pop | real_os_dev = _RecursiveFindBD(disk) |
1227 | a8083063 | Iustin Pop | if real_os_dev is None: |
1228 | a8083063 | Iustin Pop | raise errors.BlockDeviceError("Block device '%s' is not set up" % |
1229 | a8083063 | Iustin Pop | str(disk))
|
1230 | a8083063 | Iustin Pop | real_os_dev.Open() |
1231 | a8083063 | Iustin Pop | |
1232 | a8083063 | Iustin Pop | destdir = os.path.join(constants.EXPORT_DIR, instance.name + ".new")
|
1233 | a8083063 | Iustin Pop | destfile = disk.physical_id[1]
|
1234 | a8083063 | Iustin Pop | |
1235 | a8083063 | Iustin Pop | # the target command is built out of three individual commands,
|
1236 | a8083063 | Iustin Pop | # which are joined by pipes; we check each individual command for
|
1237 | a8083063 | Iustin Pop | # valid parameters
|
1238 | a8083063 | Iustin Pop | |
1239 | a8083063 | Iustin Pop | expcmd = utils.BuildShellCmd("cd %s; %s -i %s -b %s 2>%s", inst_os.path,
|
1240 | a8083063 | Iustin Pop | export_script, instance.name, |
1241 | a8083063 | Iustin Pop | real_os_dev.dev_path, logfile) |
1242 | a8083063 | Iustin Pop | |
1243 | a8083063 | Iustin Pop | comprcmd = "gzip"
|
1244 | a8083063 | Iustin Pop | |
1245 | 72f0f7fd | Iustin Pop | destcmd = utils.BuildShellCmd("mkdir -p %s && cat > %s/%s",
|
1246 | 00003458 | Guido Trotter | destdir, destdir, destfile) |
1247 | c92b310a | Michael Hanselmann | remotecmd = _GetSshRunner().BuildCmd(dest_node, constants.GANETI_RUNAS, |
1248 | c92b310a | Michael Hanselmann | destcmd) |
1249 | a8083063 | Iustin Pop | |
1250 | a8083063 | Iustin Pop | # all commands have been checked, so we're safe to combine them
|
1251 | 72f0f7fd | Iustin Pop | command = '|'.join([expcmd, comprcmd, utils.ShellQuoteArgs(remotecmd)])
|
1252 | a8083063 | Iustin Pop | |
1253 | a8083063 | Iustin Pop | result = utils.RunCmd(command) |
1254 | a8083063 | Iustin Pop | |
1255 | a8083063 | Iustin Pop | if result.failed:
|
1256 | a8083063 | Iustin Pop | logger.Error("os snapshot export command '%s' returned error: %s"
|
1257 | a8083063 | Iustin Pop | " output: %s" %
|
1258 | a8083063 | Iustin Pop | (command, result.fail_reason, result.output)) |
1259 | a8083063 | Iustin Pop | return False |
1260 | a8083063 | Iustin Pop | |
1261 | a8083063 | Iustin Pop | return True |
1262 | a8083063 | Iustin Pop | |
1263 | a8083063 | Iustin Pop | |
1264 | a8083063 | Iustin Pop | def FinalizeExport(instance, snap_disks): |
1265 | a8083063 | Iustin Pop | """Write out the export configuration information.
|
1266 | a8083063 | Iustin Pop |
|
1267 | a8083063 | Iustin Pop | Args:
|
1268 | a8083063 | Iustin Pop | instance: instance configuration
|
1269 | a8083063 | Iustin Pop | snap_disks: snapshot block devices
|
1270 | a8083063 | Iustin Pop |
|
1271 | a8083063 | Iustin Pop | Returns:
|
1272 | a8083063 | Iustin Pop | False in case of error, True otherwise.
|
1273 | a8083063 | Iustin Pop |
|
1274 | 098c0958 | Michael Hanselmann | """
|
1275 | a8083063 | Iustin Pop | destdir = os.path.join(constants.EXPORT_DIR, instance.name + ".new")
|
1276 | a8083063 | Iustin Pop | finaldestdir = os.path.join(constants.EXPORT_DIR, instance.name) |
1277 | a8083063 | Iustin Pop | |
1278 | a8083063 | Iustin Pop | config = objects.SerializableConfigParser() |
1279 | a8083063 | Iustin Pop | |
1280 | a8083063 | Iustin Pop | config.add_section(constants.INISECT_EXP) |
1281 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'version', '0') |
1282 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'timestamp', '%d' % int(time.time())) |
1283 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'source', instance.primary_node)
|
1284 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'os', instance.os)
|
1285 | a8083063 | Iustin Pop | config.set(constants.INISECT_EXP, 'compression', 'gzip') |
1286 | a8083063 | Iustin Pop | |
1287 | a8083063 | Iustin Pop | config.add_section(constants.INISECT_INS) |
1288 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'name', instance.name)
|
1289 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'memory', '%d' % instance.memory) |
1290 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'vcpus', '%d' % instance.vcpus) |
1291 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'disk_template', instance.disk_template)
|
1292 | 66f93869 | Manuel Franceschini | |
1293 | 66f93869 | Manuel Franceschini | nic_count = 0
|
1294 | a8083063 | Iustin Pop | for nic_count, nic in enumerate(instance.nics): |
1295 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'nic%d_mac' %
|
1296 | a8083063 | Iustin Pop | nic_count, '%s' % nic.mac)
|
1297 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'nic%d_ip' % nic_count, '%s' % nic.ip) |
1298 | 1cafd236 | Guido Trotter | config.set(constants.INISECT_INS, 'nic%d_bridge' % nic_count, '%s' % nic.bridge) |
1299 | a8083063 | Iustin Pop | # TODO: redundant: on load can read nics until it doesn't exist
|
1300 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'nic_count' , '%d' % nic_count) |
1301 | a8083063 | Iustin Pop | |
1302 | 66f93869 | Manuel Franceschini | disk_count = 0
|
1303 | a8083063 | Iustin Pop | for disk_count, disk in enumerate(snap_disks): |
1304 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'disk%d_ivname' % disk_count,
|
1305 | a8083063 | Iustin Pop | ('%s' % disk.iv_name))
|
1306 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'disk%d_dump' % disk_count,
|
1307 | a8083063 | Iustin Pop | ('%s' % disk.physical_id[1])) |
1308 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'disk%d_size' % disk_count,
|
1309 | a8083063 | Iustin Pop | ('%d' % disk.size))
|
1310 | a8083063 | Iustin Pop | config.set(constants.INISECT_INS, 'disk_count' , '%d' % disk_count) |
1311 | a8083063 | Iustin Pop | |
1312 | a8083063 | Iustin Pop | cff = os.path.join(destdir, constants.EXPORT_CONF_FILE) |
1313 | a8083063 | Iustin Pop | cfo = open(cff, 'w') |
1314 | a8083063 | Iustin Pop | try:
|
1315 | a8083063 | Iustin Pop | config.write(cfo) |
1316 | a8083063 | Iustin Pop | finally:
|
1317 | a8083063 | Iustin Pop | cfo.close() |
1318 | a8083063 | Iustin Pop | |
1319 | a8083063 | Iustin Pop | shutil.rmtree(finaldestdir, True)
|
1320 | a8083063 | Iustin Pop | shutil.move(destdir, finaldestdir) |
1321 | a8083063 | Iustin Pop | |
1322 | a8083063 | Iustin Pop | return True |
1323 | a8083063 | Iustin Pop | |
1324 | a8083063 | Iustin Pop | |
1325 | a8083063 | Iustin Pop | def ExportInfo(dest): |
1326 | a8083063 | Iustin Pop | """Get export configuration information.
|
1327 | a8083063 | Iustin Pop |
|
1328 | a8083063 | Iustin Pop | Args:
|
1329 | a8083063 | Iustin Pop | dest: directory containing the export
|
1330 | a8083063 | Iustin Pop |
|
1331 | a8083063 | Iustin Pop | Returns:
|
1332 | a8083063 | Iustin Pop | A serializable config file containing the export info.
|
1333 | a8083063 | Iustin Pop |
|
1334 | a8083063 | Iustin Pop | """
|
1335 | a8083063 | Iustin Pop | cff = os.path.join(dest, constants.EXPORT_CONF_FILE) |
1336 | a8083063 | Iustin Pop | |
1337 | a8083063 | Iustin Pop | config = objects.SerializableConfigParser() |
1338 | a8083063 | Iustin Pop | config.read(cff) |
1339 | a8083063 | Iustin Pop | |
1340 | a8083063 | Iustin Pop | if (not config.has_section(constants.INISECT_EXP) or |
1341 | a8083063 | Iustin Pop | not config.has_section(constants.INISECT_INS)):
|
1342 | a8083063 | Iustin Pop | return None |
1343 | a8083063 | Iustin Pop | |
1344 | a8083063 | Iustin Pop | return config
|
1345 | a8083063 | Iustin Pop | |
1346 | a8083063 | Iustin Pop | |
1347 | a8083063 | Iustin Pop | def ImportOSIntoInstance(instance, os_disk, swap_disk, src_node, src_image): |
1348 | a8083063 | Iustin Pop | """Import an os image into an instance.
|
1349 | a8083063 | Iustin Pop |
|
1350 | a8083063 | Iustin Pop | Args:
|
1351 | a8083063 | Iustin Pop | instance: the instance object
|
1352 | a8083063 | Iustin Pop | os_disk: the instance-visible name of the os device
|
1353 | a8083063 | Iustin Pop | swap_disk: the instance-visible name of the swap device
|
1354 | a8083063 | Iustin Pop | src_node: node holding the source image
|
1355 | a8083063 | Iustin Pop | src_image: path to the source image on src_node
|
1356 | a8083063 | Iustin Pop |
|
1357 | a8083063 | Iustin Pop | Returns:
|
1358 | a8083063 | Iustin Pop | False in case of error, True otherwise.
|
1359 | a8083063 | Iustin Pop |
|
1360 | a8083063 | Iustin Pop | """
|
1361 | a8083063 | Iustin Pop | inst_os = OSFromDisk(instance.os) |
1362 | a8083063 | Iustin Pop | import_script = inst_os.import_script |
1363 | a8083063 | Iustin Pop | |
1364 | 9716fdce | Iustin Pop | os_device = instance.FindDisk(os_disk) |
1365 | 9716fdce | Iustin Pop | if os_device is None: |
1366 | a8083063 | Iustin Pop | logger.Error("Can't find this device-visible name '%s'" % os_disk)
|
1367 | a8083063 | Iustin Pop | return False |
1368 | a8083063 | Iustin Pop | |
1369 | 9716fdce | Iustin Pop | swap_device = instance.FindDisk(swap_disk) |
1370 | 9716fdce | Iustin Pop | if swap_device is None: |
1371 | a8083063 | Iustin Pop | logger.Error("Can't find this device-visible name '%s'" % swap_disk)
|
1372 | a8083063 | Iustin Pop | return False |
1373 | a8083063 | Iustin Pop | |
1374 | a8083063 | Iustin Pop | real_os_dev = _RecursiveFindBD(os_device) |
1375 | a8083063 | Iustin Pop | if real_os_dev is None: |
1376 | 3ecf6786 | Iustin Pop | raise errors.BlockDeviceError("Block device '%s' is not set up" % |
1377 | 3ecf6786 | Iustin Pop | str(os_device))
|
1378 | a8083063 | Iustin Pop | real_os_dev.Open() |
1379 | a8083063 | Iustin Pop | |
1380 | a8083063 | Iustin Pop | real_swap_dev = _RecursiveFindBD(swap_device) |
1381 | a8083063 | Iustin Pop | if real_swap_dev is None: |
1382 | 3ecf6786 | Iustin Pop | raise errors.BlockDeviceError("Block device '%s' is not set up" % |
1383 | 3ecf6786 | Iustin Pop | str(swap_device))
|
1384 | a8083063 | Iustin Pop | real_swap_dev.Open() |
1385 | a8083063 | Iustin Pop | |
1386 | a8083063 | Iustin Pop | logfile = "%s/import-%s-%s-%s.log" % (constants.LOG_OS_DIR, instance.os,
|
1387 | a8083063 | Iustin Pop | instance.name, int(time.time()))
|
1388 | a8083063 | Iustin Pop | if not os.path.exists(constants.LOG_OS_DIR): |
1389 | a8083063 | Iustin Pop | os.mkdir(constants.LOG_OS_DIR, 0750)
|
1390 | a8083063 | Iustin Pop | |
1391 | 00003458 | Guido Trotter | destcmd = utils.BuildShellCmd('cat %s', src_image)
|
1392 | c92b310a | Michael Hanselmann | remotecmd = _GetSshRunner().BuildCmd(src_node, constants.GANETI_RUNAS, |
1393 | c92b310a | Michael Hanselmann | destcmd) |
1394 | a8083063 | Iustin Pop | |
1395 | a8083063 | Iustin Pop | comprcmd = "gunzip"
|
1396 | a8083063 | Iustin Pop | impcmd = utils.BuildShellCmd("(cd %s; %s -i %s -b %s -s %s &>%s)",
|
1397 | a8083063 | Iustin Pop | inst_os.path, import_script, instance.name, |
1398 | a8083063 | Iustin Pop | real_os_dev.dev_path, real_swap_dev.dev_path, |
1399 | a8083063 | Iustin Pop | logfile) |
1400 | a8083063 | Iustin Pop | |
1401 | 72f0f7fd | Iustin Pop | command = '|'.join([utils.ShellQuoteArgs(remotecmd), comprcmd, impcmd])
|
1402 | a8083063 | Iustin Pop | |
1403 | a8083063 | Iustin Pop | result = utils.RunCmd(command) |
1404 | a8083063 | Iustin Pop | |
1405 | a8083063 | Iustin Pop | if result.failed:
|
1406 | a8083063 | Iustin Pop | logger.Error("os import command '%s' returned error: %s"
|
1407 | a8083063 | Iustin Pop | " output: %s" %
|
1408 | a8083063 | Iustin Pop | (command, result.fail_reason, result.output)) |
1409 | a8083063 | Iustin Pop | return False |
1410 | a8083063 | Iustin Pop | |
1411 | a8083063 | Iustin Pop | return True |
1412 | a8083063 | Iustin Pop | |
1413 | a8083063 | Iustin Pop | |
1414 | a8083063 | Iustin Pop | def ListExports(): |
1415 | a8083063 | Iustin Pop | """Return a list of exports currently available on this machine.
|
1416 | 098c0958 | Michael Hanselmann |
|
1417 | a8083063 | Iustin Pop | """
|
1418 | a8083063 | Iustin Pop | if os.path.isdir(constants.EXPORT_DIR):
|
1419 | eedbda4b | Michael Hanselmann | return utils.ListVisibleFiles(constants.EXPORT_DIR)
|
1420 | a8083063 | Iustin Pop | else:
|
1421 | a8083063 | Iustin Pop | return []
|
1422 | a8083063 | Iustin Pop | |
1423 | a8083063 | Iustin Pop | |
1424 | a8083063 | Iustin Pop | def RemoveExport(export): |
1425 | a8083063 | Iustin Pop | """Remove an existing export from the node.
|
1426 | a8083063 | Iustin Pop |
|
1427 | a8083063 | Iustin Pop | Args:
|
1428 | a8083063 | Iustin Pop | export: the name of the export to remove
|
1429 | a8083063 | Iustin Pop |
|
1430 | a8083063 | Iustin Pop | Returns:
|
1431 | a8083063 | Iustin Pop | False in case of error, True otherwise.
|
1432 | a8083063 | Iustin Pop |
|
1433 | 098c0958 | Michael Hanselmann | """
|
1434 | a8083063 | Iustin Pop | target = os.path.join(constants.EXPORT_DIR, export) |
1435 | a8083063 | Iustin Pop | |
1436 | a8083063 | Iustin Pop | shutil.rmtree(target) |
1437 | a8083063 | Iustin Pop | # TODO: catch some of the relevant exceptions and provide a pretty
|
1438 | a8083063 | Iustin Pop | # error message if rmtree fails.
|
1439 | a8083063 | Iustin Pop | |
1440 | a8083063 | Iustin Pop | return True |
1441 | a8083063 | Iustin Pop | |
1442 | a8083063 | Iustin Pop | |
1443 | f3e513ad | Iustin Pop | def RenameBlockDevices(devlist): |
1444 | f3e513ad | Iustin Pop | """Rename a list of block devices.
|
1445 | f3e513ad | Iustin Pop |
|
1446 | f3e513ad | Iustin Pop | The devlist argument is a list of tuples (disk, new_logical,
|
1447 | f3e513ad | Iustin Pop | new_physical). The return value will be a combined boolean result
|
1448 | f3e513ad | Iustin Pop | (True only if all renames succeeded).
|
1449 | f3e513ad | Iustin Pop |
|
1450 | f3e513ad | Iustin Pop | """
|
1451 | f3e513ad | Iustin Pop | result = True
|
1452 | f3e513ad | Iustin Pop | for disk, unique_id in devlist: |
1453 | f3e513ad | Iustin Pop | dev = _RecursiveFindBD(disk) |
1454 | f3e513ad | Iustin Pop | if dev is None: |
1455 | f3e513ad | Iustin Pop | result = False
|
1456 | f3e513ad | Iustin Pop | continue
|
1457 | f3e513ad | Iustin Pop | try:
|
1458 | 3f78eef2 | Iustin Pop | old_rpath = dev.dev_path |
1459 | f3e513ad | Iustin Pop | dev.Rename(unique_id) |
1460 | 3f78eef2 | Iustin Pop | new_rpath = dev.dev_path |
1461 | 3f78eef2 | Iustin Pop | if old_rpath != new_rpath:
|
1462 | 3f78eef2 | Iustin Pop | DevCacheManager.RemoveCache(old_rpath) |
1463 | 3f78eef2 | Iustin Pop | # FIXME: we should add the new cache information here, like:
|
1464 | 3f78eef2 | Iustin Pop | # DevCacheManager.UpdateCache(new_rpath, owner, ...)
|
1465 | 3f78eef2 | Iustin Pop | # but we don't have the owner here - maybe parse from existing
|
1466 | 3f78eef2 | Iustin Pop | # cache? for now, we only lose lvm data when we rename, which
|
1467 | 3f78eef2 | Iustin Pop | # is less critical than DRBD or MD
|
1468 | f3e513ad | Iustin Pop | except errors.BlockDeviceError, err:
|
1469 | f3e513ad | Iustin Pop | logger.Error("Can't rename device '%s' to '%s': %s" %
|
1470 | f3e513ad | Iustin Pop | (dev, unique_id, err)) |
1471 | f3e513ad | Iustin Pop | result = False
|
1472 | f3e513ad | Iustin Pop | return result
|
1473 | f3e513ad | Iustin Pop | |
1474 | f3e513ad | Iustin Pop | |
1475 | 778b75bb | Manuel Franceschini | def _TransformFileStorageDir(file_storage_dir): |
1476 | 778b75bb | Manuel Franceschini | """Checks whether given file_storage_dir is valid.
|
1477 | 778b75bb | Manuel Franceschini |
|
1478 | 778b75bb | Manuel Franceschini | Checks wheter the given file_storage_dir is within the cluster-wide
|
1479 | 778b75bb | Manuel Franceschini | default file_storage_dir stored in SimpleStore. Only paths under that
|
1480 | 778b75bb | Manuel Franceschini | directory are allowed.
|
1481 | 778b75bb | Manuel Franceschini |
|
1482 | 778b75bb | Manuel Franceschini | Args:
|
1483 | 778b75bb | Manuel Franceschini | file_storage_dir: string with path
|
1484 | d61cbe76 | Iustin Pop |
|
1485 | 778b75bb | Manuel Franceschini | Returns:
|
1486 | 778b75bb | Manuel Franceschini | normalized file_storage_dir (string) if valid, None otherwise
|
1487 | 778b75bb | Manuel Franceschini |
|
1488 | 778b75bb | Manuel Franceschini | """
|
1489 | 778b75bb | Manuel Franceschini | file_storage_dir = os.path.normpath(file_storage_dir) |
1490 | 778b75bb | Manuel Franceschini | base_file_storage_dir = ssconf.SimpleStore().GetFileStorageDir() |
1491 | 778b75bb | Manuel Franceschini | if (not os.path.commonprefix([file_storage_dir, base_file_storage_dir]) == |
1492 | 778b75bb | Manuel Franceschini | base_file_storage_dir): |
1493 | 778b75bb | Manuel Franceschini | logger.Error("file storage directory '%s' is not under base file"
|
1494 | 778b75bb | Manuel Franceschini | " storage directory '%s'" %
|
1495 | 778b75bb | Manuel Franceschini | (file_storage_dir, base_file_storage_dir)) |
1496 | 778b75bb | Manuel Franceschini | return None |
1497 | 778b75bb | Manuel Franceschini | return file_storage_dir
|
1498 | 778b75bb | Manuel Franceschini | |
1499 | 778b75bb | Manuel Franceschini | |
1500 | 778b75bb | Manuel Franceschini | def CreateFileStorageDir(file_storage_dir): |
1501 | 778b75bb | Manuel Franceschini | """Create file storage directory.
|
1502 | 778b75bb | Manuel Franceschini |
|
1503 | 778b75bb | Manuel Franceschini | Args:
|
1504 | 778b75bb | Manuel Franceschini | file_storage_dir: string containing the path
|
1505 | 778b75bb | Manuel Franceschini |
|
1506 | 778b75bb | Manuel Franceschini | Returns:
|
1507 | 778b75bb | Manuel Franceschini | tuple with first element a boolean indicating wheter dir
|
1508 | 778b75bb | Manuel Franceschini | creation was successful or not
|
1509 | 778b75bb | Manuel Franceschini |
|
1510 | 778b75bb | Manuel Franceschini | """
|
1511 | 778b75bb | Manuel Franceschini | file_storage_dir = _TransformFileStorageDir(file_storage_dir) |
1512 | 778b75bb | Manuel Franceschini | result = True,
|
1513 | 778b75bb | Manuel Franceschini | if not file_storage_dir: |
1514 | 778b75bb | Manuel Franceschini | result = False,
|
1515 | 778b75bb | Manuel Franceschini | else:
|
1516 | 778b75bb | Manuel Franceschini | if os.path.exists(file_storage_dir):
|
1517 | 778b75bb | Manuel Franceschini | if not os.path.isdir(file_storage_dir): |
1518 | 778b75bb | Manuel Franceschini | logger.Error("'%s' is not a directory" % file_storage_dir)
|
1519 | 778b75bb | Manuel Franceschini | result = False,
|
1520 | 778b75bb | Manuel Franceschini | else:
|
1521 | 778b75bb | Manuel Franceschini | try:
|
1522 | 778b75bb | Manuel Franceschini | os.makedirs(file_storage_dir, 0750)
|
1523 | 778b75bb | Manuel Franceschini | except OSError, err: |
1524 | 778b75bb | Manuel Franceschini | logger.Error("Cannot create file storage directory '%s': %s" %
|
1525 | 778b75bb | Manuel Franceschini | (file_storage_dir, err)) |
1526 | 778b75bb | Manuel Franceschini | result = False,
|
1527 | 778b75bb | Manuel Franceschini | return result
|
1528 | 778b75bb | Manuel Franceschini | |
1529 | 778b75bb | Manuel Franceschini | |
1530 | 778b75bb | Manuel Franceschini | def RemoveFileStorageDir(file_storage_dir): |
1531 | 778b75bb | Manuel Franceschini | """Remove file storage directory.
|
1532 | 778b75bb | Manuel Franceschini |
|
1533 | 778b75bb | Manuel Franceschini | Remove it only if it's empty. If not log an error and return.
|
1534 | 778b75bb | Manuel Franceschini |
|
1535 | 778b75bb | Manuel Franceschini | Args:
|
1536 | 778b75bb | Manuel Franceschini | file_storage_dir: string containing the path
|
1537 | 778b75bb | Manuel Franceschini |
|
1538 | 778b75bb | Manuel Franceschini | Returns:
|
1539 | 778b75bb | Manuel Franceschini | tuple with first element a boolean indicating wheter dir
|
1540 | 778b75bb | Manuel Franceschini | removal was successful or not
|
1541 | 778b75bb | Manuel Franceschini |
|
1542 | 778b75bb | Manuel Franceschini | """
|
1543 | 778b75bb | Manuel Franceschini | file_storage_dir = _TransformFileStorageDir(file_storage_dir) |
1544 | 778b75bb | Manuel Franceschini | result = True,
|
1545 | 778b75bb | Manuel Franceschini | if not file_storage_dir: |
1546 | 778b75bb | Manuel Franceschini | result = False,
|
1547 | 778b75bb | Manuel Franceschini | else:
|
1548 | 778b75bb | Manuel Franceschini | if os.path.exists(file_storage_dir):
|
1549 | 778b75bb | Manuel Franceschini | if not os.path.isdir(file_storage_dir): |
1550 | 778b75bb | Manuel Franceschini | logger.Error("'%s' is not a directory" % file_storage_dir)
|
1551 | 778b75bb | Manuel Franceschini | result = False,
|
1552 | 778b75bb | Manuel Franceschini | # deletes dir only if empty, otherwise we want to return False
|
1553 | 778b75bb | Manuel Franceschini | try:
|
1554 | 778b75bb | Manuel Franceschini | os.rmdir(file_storage_dir) |
1555 | 778b75bb | Manuel Franceschini | except OSError, err: |
1556 | 778b75bb | Manuel Franceschini | logger.Error("Cannot remove file storage directory '%s': %s" %
|
1557 | 778b75bb | Manuel Franceschini | (file_storage_dir, err)) |
1558 | 778b75bb | Manuel Franceschini | result = False,
|
1559 | 778b75bb | Manuel Franceschini | return result
|
1560 | 778b75bb | Manuel Franceschini | |
1561 | 778b75bb | Manuel Franceschini | |
1562 | 778b75bb | Manuel Franceschini | def RenameFileStorageDir(old_file_storage_dir, new_file_storage_dir): |
1563 | 778b75bb | Manuel Franceschini | """Rename the file storage directory.
|
1564 | 778b75bb | Manuel Franceschini |
|
1565 | 778b75bb | Manuel Franceschini | Args:
|
1566 | 778b75bb | Manuel Franceschini | old_file_storage_dir: string containing the old path
|
1567 | 778b75bb | Manuel Franceschini | new_file_storage_dir: string containing the new path
|
1568 | 778b75bb | Manuel Franceschini |
|
1569 | 778b75bb | Manuel Franceschini | Returns:
|
1570 | 778b75bb | Manuel Franceschini | tuple with first element a boolean indicating wheter dir
|
1571 | 778b75bb | Manuel Franceschini | rename was successful or not
|
1572 | 778b75bb | Manuel Franceschini |
|
1573 | 778b75bb | Manuel Franceschini | """
|
1574 | 778b75bb | Manuel Franceschini | old_file_storage_dir = _TransformFileStorageDir(old_file_storage_dir) |
1575 | 778b75bb | Manuel Franceschini | new_file_storage_dir = _TransformFileStorageDir(new_file_storage_dir) |
1576 | 778b75bb | Manuel Franceschini | result = True,
|
1577 | 778b75bb | Manuel Franceschini | if not old_file_storage_dir or not new_file_storage_dir: |
1578 | 778b75bb | Manuel Franceschini | result = False,
|
1579 | 778b75bb | Manuel Franceschini | else:
|
1580 | 778b75bb | Manuel Franceschini | if not os.path.exists(new_file_storage_dir): |
1581 | 778b75bb | Manuel Franceschini | if os.path.isdir(old_file_storage_dir):
|
1582 | 778b75bb | Manuel Franceschini | try:
|
1583 | 778b75bb | Manuel Franceschini | os.rename(old_file_storage_dir, new_file_storage_dir) |
1584 | 778b75bb | Manuel Franceschini | except OSError, err: |
1585 | 778b75bb | Manuel Franceschini | logger.Error("Cannot rename '%s' to '%s': %s"
|
1586 | 778b75bb | Manuel Franceschini | % (old_file_storage_dir, new_file_storage_dir, err)) |
1587 | 778b75bb | Manuel Franceschini | result = False,
|
1588 | 778b75bb | Manuel Franceschini | else:
|
1589 | 778b75bb | Manuel Franceschini | logger.Error("'%s' is not a directory" % old_file_storage_dir)
|
1590 | 778b75bb | Manuel Franceschini | result = False,
|
1591 | 778b75bb | Manuel Franceschini | else:
|
1592 | 778b75bb | Manuel Franceschini | if os.path.exists(old_file_storage_dir):
|
1593 | 778b75bb | Manuel Franceschini | logger.Error("Cannot rename '%s' to '%s'. Both locations exist." %
|
1594 | 778b75bb | Manuel Franceschini | old_file_storage_dir, new_file_storage_dir) |
1595 | 778b75bb | Manuel Franceschini | result = False,
|
1596 | 778b75bb | Manuel Franceschini | return result
|
1597 | 778b75bb | Manuel Franceschini | |
1598 | 778b75bb | Manuel Franceschini | |
1599 | d61cbe76 | Iustin Pop | def CloseBlockDevices(disks): |
1600 | d61cbe76 | Iustin Pop | """Closes the given block devices.
|
1601 | d61cbe76 | Iustin Pop |
|
1602 | d61cbe76 | Iustin Pop | This means they will be switched to secondary mode (in case of DRBD).
|
1603 | d61cbe76 | Iustin Pop |
|
1604 | d61cbe76 | Iustin Pop | """
|
1605 | d61cbe76 | Iustin Pop | bdevs = [] |
1606 | d61cbe76 | Iustin Pop | for cf in disks: |
1607 | d61cbe76 | Iustin Pop | rd = _RecursiveFindBD(cf) |
1608 | d61cbe76 | Iustin Pop | if rd is None: |
1609 | d61cbe76 | Iustin Pop | return (False, "Can't find device %s" % cf) |
1610 | d61cbe76 | Iustin Pop | bdevs.append(rd) |
1611 | d61cbe76 | Iustin Pop | |
1612 | d61cbe76 | Iustin Pop | msg = [] |
1613 | d61cbe76 | Iustin Pop | for rd in bdevs: |
1614 | d61cbe76 | Iustin Pop | try:
|
1615 | d61cbe76 | Iustin Pop | rd.Close() |
1616 | d61cbe76 | Iustin Pop | except errors.BlockDeviceError, err:
|
1617 | d61cbe76 | Iustin Pop | msg.append(str(err))
|
1618 | d61cbe76 | Iustin Pop | if msg:
|
1619 | d61cbe76 | Iustin Pop | return (False, "Can't make devices secondary: %s" % ",".join(msg)) |
1620 | d61cbe76 | Iustin Pop | else:
|
1621 | d61cbe76 | Iustin Pop | return (True, "All devices secondary") |
1622 | d61cbe76 | Iustin Pop | |
1623 | d61cbe76 | Iustin Pop | |
1624 | a8083063 | Iustin Pop | class HooksRunner(object): |
1625 | a8083063 | Iustin Pop | """Hook runner.
|
1626 | a8083063 | Iustin Pop |
|
1627 | a8083063 | Iustin Pop | This class is instantiated on the node side (ganeti-noded) and not on
|
1628 | a8083063 | Iustin Pop | the master side.
|
1629 | a8083063 | Iustin Pop |
|
1630 | a8083063 | Iustin Pop | """
|
1631 | a8083063 | Iustin Pop | RE_MASK = re.compile("^[a-zA-Z0-9_-]+$")
|
1632 | a8083063 | Iustin Pop | |
1633 | a8083063 | Iustin Pop | def __init__(self, hooks_base_dir=None): |
1634 | a8083063 | Iustin Pop | """Constructor for hooks runner.
|
1635 | a8083063 | Iustin Pop |
|
1636 | a8083063 | Iustin Pop | Args:
|
1637 | a8083063 | Iustin Pop | - hooks_base_dir: if not None, this overrides the
|
1638 | a8083063 | Iustin Pop | constants.HOOKS_BASE_DIR (useful for unittests)
|
1639 | a8083063 | Iustin Pop |
|
1640 | a8083063 | Iustin Pop | """
|
1641 | a8083063 | Iustin Pop | if hooks_base_dir is None: |
1642 | a8083063 | Iustin Pop | hooks_base_dir = constants.HOOKS_BASE_DIR |
1643 | a8083063 | Iustin Pop | self._BASE_DIR = hooks_base_dir
|
1644 | a8083063 | Iustin Pop | |
1645 | a8083063 | Iustin Pop | @staticmethod
|
1646 | a8083063 | Iustin Pop | def ExecHook(script, env): |
1647 | a8083063 | Iustin Pop | """Exec one hook script.
|
1648 | a8083063 | Iustin Pop |
|
1649 | a8083063 | Iustin Pop | Args:
|
1650 | a8083063 | Iustin Pop | - script: the full path to the script
|
1651 | a8083063 | Iustin Pop | - env: the environment with which to exec the script
|
1652 | a8083063 | Iustin Pop |
|
1653 | a8083063 | Iustin Pop | """
|
1654 | a8083063 | Iustin Pop | # exec the process using subprocess and log the output
|
1655 | a8083063 | Iustin Pop | fdstdin = None
|
1656 | a8083063 | Iustin Pop | try:
|
1657 | a8083063 | Iustin Pop | fdstdin = open("/dev/null", "r") |
1658 | a8083063 | Iustin Pop | child = subprocess.Popen([script], stdin=fdstdin, stdout=subprocess.PIPE, |
1659 | a8083063 | Iustin Pop | stderr=subprocess.STDOUT, close_fds=True,
|
1660 | 147af04d | Iustin Pop | shell=False, cwd="/", env=env) |
1661 | a8083063 | Iustin Pop | output = ""
|
1662 | a8083063 | Iustin Pop | try:
|
1663 | a8083063 | Iustin Pop | output = child.stdout.read(4096)
|
1664 | a8083063 | Iustin Pop | child.stdout.close() |
1665 | a8083063 | Iustin Pop | except EnvironmentError, err: |
1666 | a8083063 | Iustin Pop | output += "Hook script error: %s" % str(err) |
1667 | a8083063 | Iustin Pop | |
1668 | a8083063 | Iustin Pop | while True: |
1669 | a8083063 | Iustin Pop | try:
|
1670 | a8083063 | Iustin Pop | result = child.wait() |
1671 | a8083063 | Iustin Pop | break
|
1672 | a8083063 | Iustin Pop | except EnvironmentError, err: |
1673 | a8083063 | Iustin Pop | if err.errno == errno.EINTR:
|
1674 | a8083063 | Iustin Pop | continue
|
1675 | a8083063 | Iustin Pop | raise
|
1676 | a8083063 | Iustin Pop | finally:
|
1677 | a8083063 | Iustin Pop | # try not to leak fds
|
1678 | a8083063 | Iustin Pop | for fd in (fdstdin, ): |
1679 | a8083063 | Iustin Pop | if fd is not None: |
1680 | a8083063 | Iustin Pop | try:
|
1681 | a8083063 | Iustin Pop | fd.close() |
1682 | a8083063 | Iustin Pop | except EnvironmentError, err: |
1683 | a8083063 | Iustin Pop | # just log the error
|
1684 | a8083063 | Iustin Pop | #logger.Error("While closing fd %s: %s" % (fd, err))
|
1685 | a8083063 | Iustin Pop | pass
|
1686 | a8083063 | Iustin Pop | |
1687 | a8083063 | Iustin Pop | return result == 0, output |
1688 | a8083063 | Iustin Pop | |
1689 | a8083063 | Iustin Pop | def RunHooks(self, hpath, phase, env): |
1690 | a8083063 | Iustin Pop | """Run the scripts in the hooks directory.
|
1691 | a8083063 | Iustin Pop |
|
1692 | a8083063 | Iustin Pop | This method will not be usually overriden by child opcodes.
|
1693 | a8083063 | Iustin Pop |
|
1694 | a8083063 | Iustin Pop | """
|
1695 | a8083063 | Iustin Pop | if phase == constants.HOOKS_PHASE_PRE:
|
1696 | a8083063 | Iustin Pop | suffix = "pre"
|
1697 | a8083063 | Iustin Pop | elif phase == constants.HOOKS_PHASE_POST:
|
1698 | a8083063 | Iustin Pop | suffix = "post"
|
1699 | a8083063 | Iustin Pop | else:
|
1700 | 3ecf6786 | Iustin Pop | raise errors.ProgrammerError("Unknown hooks phase: '%s'" % phase) |
1701 | a8083063 | Iustin Pop | rr = [] |
1702 | a8083063 | Iustin Pop | |
1703 | a8083063 | Iustin Pop | subdir = "%s-%s.d" % (hpath, suffix)
|
1704 | a8083063 | Iustin Pop | dir_name = "%s/%s" % (self._BASE_DIR, subdir) |
1705 | a8083063 | Iustin Pop | try:
|
1706 | eedbda4b | Michael Hanselmann | dir_contents = utils.ListVisibleFiles(dir_name) |
1707 | a8083063 | Iustin Pop | except OSError, err: |
1708 | a8083063 | Iustin Pop | # must log
|
1709 | a8083063 | Iustin Pop | return rr
|
1710 | a8083063 | Iustin Pop | |
1711 | a8083063 | Iustin Pop | # we use the standard python sort order,
|
1712 | a8083063 | Iustin Pop | # so 00name is the recommended naming scheme
|
1713 | a8083063 | Iustin Pop | dir_contents.sort() |
1714 | a8083063 | Iustin Pop | for relname in dir_contents: |
1715 | a8083063 | Iustin Pop | fname = os.path.join(dir_name, relname) |
1716 | a8083063 | Iustin Pop | if not (os.path.isfile(fname) and os.access(fname, os.X_OK) and |
1717 | a8083063 | Iustin Pop | self.RE_MASK.match(relname) is not None): |
1718 | a8083063 | Iustin Pop | rrval = constants.HKR_SKIP |
1719 | a8083063 | Iustin Pop | output = ""
|
1720 | a8083063 | Iustin Pop | else:
|
1721 | a8083063 | Iustin Pop | result, output = self.ExecHook(fname, env)
|
1722 | a8083063 | Iustin Pop | if not result: |
1723 | a8083063 | Iustin Pop | rrval = constants.HKR_FAIL |
1724 | a8083063 | Iustin Pop | else:
|
1725 | a8083063 | Iustin Pop | rrval = constants.HKR_SUCCESS |
1726 | a8083063 | Iustin Pop | rr.append(("%s/%s" % (subdir, relname), rrval, output))
|
1727 | a8083063 | Iustin Pop | |
1728 | a8083063 | Iustin Pop | return rr
|
1729 | 3f78eef2 | Iustin Pop | |
1730 | 3f78eef2 | Iustin Pop | |
1731 | 8d528b7c | Iustin Pop | class IAllocatorRunner(object): |
1732 | 8d528b7c | Iustin Pop | """IAllocator runner.
|
1733 | 8d528b7c | Iustin Pop |
|
1734 | 8d528b7c | Iustin Pop | This class is instantiated on the node side (ganeti-noded) and not on
|
1735 | 8d528b7c | Iustin Pop | the master side.
|
1736 | 8d528b7c | Iustin Pop |
|
1737 | 8d528b7c | Iustin Pop | """
|
1738 | 8d528b7c | Iustin Pop | def Run(self, name, idata): |
1739 | 8d528b7c | Iustin Pop | """Run an iallocator script.
|
1740 | 8d528b7c | Iustin Pop |
|
1741 | 8d528b7c | Iustin Pop | Return value: tuple of:
|
1742 | 8d528b7c | Iustin Pop | - run status (one of the IARUN_ constants)
|
1743 | 8d528b7c | Iustin Pop | - stdout
|
1744 | 8d528b7c | Iustin Pop | - stderr
|
1745 | 8d528b7c | Iustin Pop | - fail reason (as from utils.RunResult)
|
1746 | 8d528b7c | Iustin Pop |
|
1747 | 8d528b7c | Iustin Pop | """
|
1748 | 8d528b7c | Iustin Pop | alloc_script = utils.FindFile(name, constants.IALLOCATOR_SEARCH_PATH, |
1749 | 8d528b7c | Iustin Pop | os.path.isfile) |
1750 | 8d528b7c | Iustin Pop | if alloc_script is None: |
1751 | 8d528b7c | Iustin Pop | return (constants.IARUN_NOTFOUND, None, None, None) |
1752 | 8d528b7c | Iustin Pop | |
1753 | 8d528b7c | Iustin Pop | fd, fin_name = tempfile.mkstemp(prefix="ganeti-iallocator.")
|
1754 | 8d528b7c | Iustin Pop | try:
|
1755 | 8d528b7c | Iustin Pop | os.write(fd, idata) |
1756 | 8d528b7c | Iustin Pop | os.close(fd) |
1757 | 8d528b7c | Iustin Pop | result = utils.RunCmd([alloc_script, fin_name]) |
1758 | 8d528b7c | Iustin Pop | if result.failed:
|
1759 | 8d528b7c | Iustin Pop | return (constants.IARUN_FAILURE, result.stdout, result.stderr,
|
1760 | 8d528b7c | Iustin Pop | result.fail_reason) |
1761 | 8d528b7c | Iustin Pop | finally:
|
1762 | 8d528b7c | Iustin Pop | os.unlink(fin_name) |
1763 | 8d528b7c | Iustin Pop | |
1764 | 8d528b7c | Iustin Pop | return (constants.IARUN_SUCCESS, result.stdout, result.stderr, None) |
1765 | 8d528b7c | Iustin Pop | |
1766 | 8d528b7c | Iustin Pop | |
1767 | 3f78eef2 | Iustin Pop | class DevCacheManager(object): |
1768 | c99a3cc0 | Manuel Franceschini | """Simple class for managing a cache of block device information.
|
1769 | 3f78eef2 | Iustin Pop |
|
1770 | 3f78eef2 | Iustin Pop | """
|
1771 | 3f78eef2 | Iustin Pop | _DEV_PREFIX = "/dev/"
|
1772 | 3f78eef2 | Iustin Pop | _ROOT_DIR = constants.BDEV_CACHE_DIR |
1773 | 3f78eef2 | Iustin Pop | |
1774 | 3f78eef2 | Iustin Pop | @classmethod
|
1775 | 3f78eef2 | Iustin Pop | def _ConvertPath(cls, dev_path): |
1776 | 3f78eef2 | Iustin Pop | """Converts a /dev/name path to the cache file name.
|
1777 | 3f78eef2 | Iustin Pop |
|
1778 | 3f78eef2 | Iustin Pop | This replaces slashes with underscores and strips the /dev
|
1779 | 3f78eef2 | Iustin Pop | prefix. It then returns the full path to the cache file
|
1780 | 3f78eef2 | Iustin Pop |
|
1781 | 3f78eef2 | Iustin Pop | """
|
1782 | 3f78eef2 | Iustin Pop | if dev_path.startswith(cls._DEV_PREFIX):
|
1783 | 3f78eef2 | Iustin Pop | dev_path = dev_path[len(cls._DEV_PREFIX):]
|
1784 | 3f78eef2 | Iustin Pop | dev_path = dev_path.replace("/", "_") |
1785 | 3f78eef2 | Iustin Pop | fpath = "%s/bdev_%s" % (cls._ROOT_DIR, dev_path)
|
1786 | 3f78eef2 | Iustin Pop | return fpath
|
1787 | 3f78eef2 | Iustin Pop | |
1788 | 3f78eef2 | Iustin Pop | @classmethod
|
1789 | 3f78eef2 | Iustin Pop | def UpdateCache(cls, dev_path, owner, on_primary, iv_name): |
1790 | 3f78eef2 | Iustin Pop | """Updates the cache information for a given device.
|
1791 | 3f78eef2 | Iustin Pop |
|
1792 | 3f78eef2 | Iustin Pop | """
|
1793 | cf5a8306 | Iustin Pop | if dev_path is None: |
1794 | cf5a8306 | Iustin Pop | logger.Error("DevCacheManager.UpdateCache got a None dev_path")
|
1795 | cf5a8306 | Iustin Pop | return
|
1796 | 3f78eef2 | Iustin Pop | fpath = cls._ConvertPath(dev_path) |
1797 | 3f78eef2 | Iustin Pop | if on_primary:
|
1798 | 3f78eef2 | Iustin Pop | state = "primary"
|
1799 | 3f78eef2 | Iustin Pop | else:
|
1800 | 3f78eef2 | Iustin Pop | state = "secondary"
|
1801 | 3f78eef2 | Iustin Pop | if iv_name is None: |
1802 | 3f78eef2 | Iustin Pop | iv_name = "not_visible"
|
1803 | 3f78eef2 | Iustin Pop | fdata = "%s %s %s\n" % (str(owner), state, iv_name) |
1804 | 3f78eef2 | Iustin Pop | try:
|
1805 | 3f78eef2 | Iustin Pop | utils.WriteFile(fpath, data=fdata) |
1806 | 3f78eef2 | Iustin Pop | except EnvironmentError, err: |
1807 | 3f78eef2 | Iustin Pop | logger.Error("Can't update bdev cache for %s, error %s" %
|
1808 | 3f78eef2 | Iustin Pop | (dev_path, str(err)))
|
1809 | 3f78eef2 | Iustin Pop | |
1810 | 3f78eef2 | Iustin Pop | @classmethod
|
1811 | 3f78eef2 | Iustin Pop | def RemoveCache(cls, dev_path): |
1812 | 3f78eef2 | Iustin Pop | """Remove data for a dev_path.
|
1813 | 3f78eef2 | Iustin Pop |
|
1814 | 3f78eef2 | Iustin Pop | """
|
1815 | cf5a8306 | Iustin Pop | if dev_path is None: |
1816 | cf5a8306 | Iustin Pop | logger.Error("DevCacheManager.RemoveCache got a None dev_path")
|
1817 | cf5a8306 | Iustin Pop | return
|
1818 | 3f78eef2 | Iustin Pop | fpath = cls._ConvertPath(dev_path) |
1819 | 3f78eef2 | Iustin Pop | try:
|
1820 | 3f78eef2 | Iustin Pop | utils.RemoveFile(fpath) |
1821 | 3f78eef2 | Iustin Pop | except EnvironmentError, err: |
1822 | 3f78eef2 | Iustin Pop | logger.Error("Can't update bdev cache for %s, error %s" %
|
1823 | 3f78eef2 | Iustin Pop | (dev_path, str(err))) |