root / lib / hypervisor / hv_kvm.py @ 94a1b377
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1 | eb58f9b1 | Guido Trotter | #
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2 | eb58f9b1 | Guido Trotter | #
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3 | eb58f9b1 | Guido Trotter | |
4 | eb58f9b1 | Guido Trotter | # Copyright (C) 2008 Google Inc.
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5 | eb58f9b1 | Guido Trotter | #
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6 | eb58f9b1 | Guido Trotter | # This program is free software; you can redistribute it and/or modify
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7 | eb58f9b1 | Guido Trotter | # it under the terms of the GNU General Public License as published by
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8 | eb58f9b1 | Guido Trotter | # the Free Software Foundation; either version 2 of the License, or
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9 | eb58f9b1 | Guido Trotter | # (at your option) any later version.
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10 | eb58f9b1 | Guido Trotter | #
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11 | eb58f9b1 | Guido Trotter | # This program is distributed in the hope that it will be useful, but
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12 | eb58f9b1 | Guido Trotter | # WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | eb58f9b1 | Guido Trotter | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | eb58f9b1 | Guido Trotter | # General Public License for more details.
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15 | eb58f9b1 | Guido Trotter | #
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16 | eb58f9b1 | Guido Trotter | # You should have received a copy of the GNU General Public License
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17 | eb58f9b1 | Guido Trotter | # along with this program; if not, write to the Free Software
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18 | eb58f9b1 | Guido Trotter | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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19 | eb58f9b1 | Guido Trotter | # 02110-1301, USA.
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20 | eb58f9b1 | Guido Trotter | |
21 | eb58f9b1 | Guido Trotter | |
22 | eb58f9b1 | Guido Trotter | """KVM hypervisor
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23 | eb58f9b1 | Guido Trotter |
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24 | eb58f9b1 | Guido Trotter | """
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25 | eb58f9b1 | Guido Trotter | |
26 | eb58f9b1 | Guido Trotter | import os |
27 | eb58f9b1 | Guido Trotter | import os.path |
28 | eb58f9b1 | Guido Trotter | import re |
29 | eb58f9b1 | Guido Trotter | import tempfile |
30 | 6567aff3 | Guido Trotter | import time |
31 | 30e42c4e | Guido Trotter | import logging |
32 | eb58f9b1 | Guido Trotter | from cStringIO import StringIO |
33 | eb58f9b1 | Guido Trotter | |
34 | eb58f9b1 | Guido Trotter | from ganeti import utils |
35 | eb58f9b1 | Guido Trotter | from ganeti import constants |
36 | eb58f9b1 | Guido Trotter | from ganeti import errors |
37 | 38e250ba | Guido Trotter | from ganeti import serializer |
38 | 38e250ba | Guido Trotter | from ganeti import objects |
39 | eb58f9b1 | Guido Trotter | from ganeti.hypervisor import hv_base |
40 | eb58f9b1 | Guido Trotter | |
41 | eb58f9b1 | Guido Trotter | |
42 | eb58f9b1 | Guido Trotter | class KVMHypervisor(hv_base.BaseHypervisor): |
43 | c4469f75 | Guido Trotter | """KVM hypervisor interface"""
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44 | eb58f9b1 | Guido Trotter | |
45 | eb58f9b1 | Guido Trotter | _ROOT_DIR = constants.RUN_GANETI_DIR + "/kvm-hypervisor"
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46 | a1d79fc6 | Guido Trotter | _PIDS_DIR = _ROOT_DIR + "/pid" # contains live instances pids |
47 | a1d79fc6 | Guido Trotter | _CTRL_DIR = _ROOT_DIR + "/ctrl" # contains instances control sockets |
48 | a1d79fc6 | Guido Trotter | _CONF_DIR = _ROOT_DIR + "/conf" # contains instances startup data |
49 | a1d79fc6 | Guido Trotter | _DIRS = [_ROOT_DIR, _PIDS_DIR, _CTRL_DIR, _CONF_DIR] |
50 | eb58f9b1 | Guido Trotter | |
51 | 205ab586 | Iustin Pop | PARAMETERS = { |
52 | 205ab586 | Iustin Pop | constants.HV_KERNEL_PATH: hv_base.OPT_FILE_CHECK, |
53 | 205ab586 | Iustin Pop | constants.HV_INITRD_PATH: hv_base.OPT_FILE_CHECK, |
54 | 205ab586 | Iustin Pop | constants.HV_ROOT_PATH: hv_base.NO_CHECK, |
55 | 205ab586 | Iustin Pop | constants.HV_KERNEL_ARGS: hv_base.NO_CHECK, |
56 | 205ab586 | Iustin Pop | constants.HV_ACPI: hv_base.NO_CHECK, |
57 | 205ab586 | Iustin Pop | constants.HV_SERIAL_CONSOLE: hv_base.NO_CHECK, |
58 | d73ef63f | Michael Hanselmann | constants.HV_VNC_BIND_ADDRESS: |
59 | d73ef63f | Michael Hanselmann | (False, lambda x: (utils.IsValidIP(x) or utils.IsNormAbsPath(x)), |
60 | d73ef63f | Michael Hanselmann | "the VNC bind address must be either a valid IP address or an absolute"
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61 | d73ef63f | Michael Hanselmann | " pathname", None, None), |
62 | 205ab586 | Iustin Pop | constants.HV_VNC_TLS: hv_base.NO_CHECK, |
63 | 205ab586 | Iustin Pop | constants.HV_VNC_X509: hv_base.OPT_DIR_CHECK, |
64 | 205ab586 | Iustin Pop | constants.HV_VNC_X509_VERIFY: hv_base.NO_CHECK, |
65 | 6e6bb8d5 | Guido Trotter | constants.HV_VNC_PASSWORD_FILE: hv_base.OPT_FILE_CHECK, |
66 | 205ab586 | Iustin Pop | constants.HV_CDROM_IMAGE_PATH: hv_base.OPT_FILE_CHECK, |
67 | d73ef63f | Michael Hanselmann | constants.HV_BOOT_ORDER: |
68 | d73ef63f | Michael Hanselmann | hv_base.ParamInSet(True, constants.HT_KVM_VALID_BO_TYPES),
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69 | d73ef63f | Michael Hanselmann | constants.HV_NIC_TYPE: |
70 | d73ef63f | Michael Hanselmann | hv_base.ParamInSet(True, constants.HT_KVM_VALID_NIC_TYPES),
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71 | d73ef63f | Michael Hanselmann | constants.HV_DISK_TYPE: |
72 | d73ef63f | Michael Hanselmann | hv_base.ParamInSet(True, constants.HT_KVM_VALID_DISK_TYPES),
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73 | d73ef63f | Michael Hanselmann | constants.HV_USB_MOUSE: |
74 | d73ef63f | Michael Hanselmann | hv_base.ParamInSet(False, constants.HT_KVM_VALID_MOUSE_TYPES),
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75 | 78411c60 | Iustin Pop | constants.HV_MIGRATION_PORT: hv_base.NET_PORT_CHECK, |
76 | 6b970cef | Jun Futagawa | constants.HV_USE_LOCALTIME: hv_base.NO_CHECK, |
77 | 19572932 | Iustin Pop | constants.HV_DISK_CACHE: |
78 | 19572932 | Iustin Pop | hv_base.ParamInSet(True, constants.HT_VALID_CACHE_TYPES),
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79 | 205ab586 | Iustin Pop | } |
80 | 6b5605e8 | Iustin Pop | |
81 | 30e42c4e | Guido Trotter | _MIGRATION_STATUS_RE = re.compile('Migration\s+status:\s+(\w+)',
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82 | 30e42c4e | Guido Trotter | re.M | re.I) |
83 | c4e388a5 | Guido Trotter | _MIGRATION_INFO_MAX_BAD_ANSWERS = 5
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84 | c4e388a5 | Guido Trotter | _MIGRATION_INFO_RETRY_DELAY = 2
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85 | 30e42c4e | Guido Trotter | |
86 | 5420ffc9 | Guido Trotter | _KVM_NETWORK_SCRIPT = constants.SYSCONFDIR + "/ganeti/kvm-vif-bridge"
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87 | 5420ffc9 | Guido Trotter | |
88 | 64bfbc08 | Guido Trotter | ANCILLARY_FILES = [ |
89 | 64bfbc08 | Guido Trotter | _KVM_NETWORK_SCRIPT, |
90 | 64bfbc08 | Guido Trotter | ] |
91 | 64bfbc08 | Guido Trotter | |
92 | eb58f9b1 | Guido Trotter | def __init__(self): |
93 | eb58f9b1 | Guido Trotter | hv_base.BaseHypervisor.__init__(self)
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94 | eb58f9b1 | Guido Trotter | # Let's make sure the directories we need exist, even if the RUN_DIR lives
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95 | eb58f9b1 | Guido Trotter | # in a tmpfs filesystem or has been otherwise wiped out.
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96 | 29921401 | Iustin Pop | dirs = [(dname, constants.RUN_DIRS_MODE) for dname in self._DIRS] |
97 | 9afb67fe | Guido Trotter | utils.EnsureDirs(dirs) |
98 | eb58f9b1 | Guido Trotter | |
99 | 98ec75d6 | Iustin Pop | def _InstancePidFile(self, instance_name): |
100 | 98ec75d6 | Iustin Pop | """Returns the instance pidfile.
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101 | 98ec75d6 | Iustin Pop |
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102 | 98ec75d6 | Iustin Pop | """
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103 | 98ec75d6 | Iustin Pop | pidfile = "%s/%s" % (self._PIDS_DIR, instance_name) |
104 | 98ec75d6 | Iustin Pop | return pidfile
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105 | 98ec75d6 | Iustin Pop | |
106 | 1f8b3a27 | Guido Trotter | def _InstancePidAlive(self, instance_name): |
107 | 1f8b3a27 | Guido Trotter | """Returns the instance pid and pidfile
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108 | 1f8b3a27 | Guido Trotter |
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109 | 1f8b3a27 | Guido Trotter | """
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110 | 98ec75d6 | Iustin Pop | pidfile = self._InstancePidFile(instance_name)
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111 | 1f8b3a27 | Guido Trotter | pid = utils.ReadPidFile(pidfile) |
112 | 1f8b3a27 | Guido Trotter | alive = utils.IsProcessAlive(pid) |
113 | 1f8b3a27 | Guido Trotter | |
114 | 1f8b3a27 | Guido Trotter | return (pidfile, pid, alive)
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115 | 1f8b3a27 | Guido Trotter | |
116 | 5905901c | Iustin Pop | def _CheckDown(self, instance_name): |
117 | 5905901c | Iustin Pop | """Raises an error unless the given instance is down.
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118 | 5905901c | Iustin Pop |
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119 | 5905901c | Iustin Pop | """
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120 | 5905901c | Iustin Pop | alive = self._InstancePidAlive(instance_name)[2] |
121 | 5905901c | Iustin Pop | if alive:
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122 | 5905901c | Iustin Pop | raise errors.HypervisorError("Failed to start instance %s: %s" % |
123 | 5905901c | Iustin Pop | (instance_name, "already running"))
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124 | 5905901c | Iustin Pop | |
125 | 0df4d98a | Guido Trotter | @classmethod
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126 | 0df4d98a | Guido Trotter | def _InstanceMonitor(cls, instance_name): |
127 | c4fbefc8 | Guido Trotter | """Returns the instance monitor socket name
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128 | c4fbefc8 | Guido Trotter |
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129 | c4fbefc8 | Guido Trotter | """
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130 | 0df4d98a | Guido Trotter | return '%s/%s.monitor' % (cls._CTRL_DIR, instance_name) |
131 | c4fbefc8 | Guido Trotter | |
132 | 0df4d98a | Guido Trotter | @classmethod
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133 | 0df4d98a | Guido Trotter | def _InstanceSerial(cls, instance_name): |
134 | c4fbefc8 | Guido Trotter | """Returns the instance serial socket name
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135 | c4fbefc8 | Guido Trotter |
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136 | c4fbefc8 | Guido Trotter | """
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137 | 0df4d98a | Guido Trotter | return '%s/%s.serial' % (cls._CTRL_DIR, instance_name) |
138 | c4fbefc8 | Guido Trotter | |
139 | 86d6bc2a | Guido Trotter | @staticmethod
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140 | 86d6bc2a | Guido Trotter | def _SocatUnixConsoleParams(): |
141 | 86d6bc2a | Guido Trotter | """Returns the correct parameters for socat
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142 | 86d6bc2a | Guido Trotter |
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143 | 86d6bc2a | Guido Trotter | If we have a new-enough socat we can use raw mode with an escape character.
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144 | 86d6bc2a | Guido Trotter |
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145 | 86d6bc2a | Guido Trotter | """
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146 | fe5b0c42 | Michael Hanselmann | if constants.SOCAT_USE_ESCAPE:
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147 | 86d6bc2a | Guido Trotter | return "raw,echo=0,escape=%s" % constants.SOCAT_ESCAPE_CODE |
148 | 86d6bc2a | Guido Trotter | else:
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149 | 86d6bc2a | Guido Trotter | return "echo=0,icanon=0" |
150 | 86d6bc2a | Guido Trotter | |
151 | 0df4d98a | Guido Trotter | @classmethod
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152 | 0df4d98a | Guido Trotter | def _InstanceKVMRuntime(cls, instance_name): |
153 | 38e250ba | Guido Trotter | """Returns the instance KVM runtime filename
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154 | 38e250ba | Guido Trotter |
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155 | 38e250ba | Guido Trotter | """
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156 | 0df4d98a | Guido Trotter | return '%s/%s.runtime' % (cls._CONF_DIR, instance_name) |
157 | 38e250ba | Guido Trotter | |
158 | 7e66c35b | Guido Trotter | @classmethod
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159 | 7e66c35b | Guido Trotter | def _RemoveInstanceRuntimeFiles(cls, pidfile, instance_name): |
160 | 7e66c35b | Guido Trotter | """Removes an instance's rutime sockets/files.
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161 | 7e66c35b | Guido Trotter |
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162 | 7e66c35b | Guido Trotter | """
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163 | 7e66c35b | Guido Trotter | utils.RemoveFile(pidfile) |
164 | 7e66c35b | Guido Trotter | utils.RemoveFile(cls._InstanceMonitor(instance_name)) |
165 | 7e66c35b | Guido Trotter | utils.RemoveFile(cls._InstanceSerial(instance_name)) |
166 | 7e66c35b | Guido Trotter | utils.RemoveFile(cls._InstanceKVMRuntime(instance_name)) |
167 | 7e66c35b | Guido Trotter | |
168 | eb58f9b1 | Guido Trotter | def _WriteNetScript(self, instance, seq, nic): |
169 | eb58f9b1 | Guido Trotter | """Write a script to connect a net interface to the proper bridge.
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170 | eb58f9b1 | Guido Trotter |
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171 | eb58f9b1 | Guido Trotter | This can be used by any qemu-type hypervisor.
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172 | eb58f9b1 | Guido Trotter |
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173 | eb58f9b1 | Guido Trotter | @param instance: instance we're acting on
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174 | eb58f9b1 | Guido Trotter | @type instance: instance object
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175 | eb58f9b1 | Guido Trotter | @param seq: nic sequence number
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176 | eb58f9b1 | Guido Trotter | @type seq: int
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177 | eb58f9b1 | Guido Trotter | @param nic: nic we're acting on
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178 | eb58f9b1 | Guido Trotter | @type nic: nic object
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179 | eb58f9b1 | Guido Trotter | @return: netscript file name
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180 | eb58f9b1 | Guido Trotter | @rtype: string
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181 | eb58f9b1 | Guido Trotter |
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182 | eb58f9b1 | Guido Trotter | """
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183 | eb58f9b1 | Guido Trotter | script = StringIO() |
184 | eb58f9b1 | Guido Trotter | script.write("#!/bin/sh\n")
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185 | eb58f9b1 | Guido Trotter | script.write("# this is autogenerated by Ganeti, please do not edit\n#\n")
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186 | eb58f9b1 | Guido Trotter | script.write("export INSTANCE=%s\n" % instance.name)
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187 | eb58f9b1 | Guido Trotter | script.write("export MAC=%s\n" % nic.mac)
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188 | bef9c750 | Guido Trotter | if nic.ip:
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189 | bef9c750 | Guido Trotter | script.write("export IP=%s\n" % nic.ip)
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190 | bef9c750 | Guido Trotter | script.write("export MODE=%s\n" % nic.nicparams[constants.NIC_MODE])
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191 | bef9c750 | Guido Trotter | if nic.nicparams[constants.NIC_LINK]:
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192 | bef9c750 | Guido Trotter | script.write("export LINK=%s\n" % nic.nicparams[constants.NIC_LINK])
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193 | bef9c750 | Guido Trotter | if nic.nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
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194 | bef9c750 | Guido Trotter | script.write("export BRIDGE=%s\n" % nic.nicparams[constants.NIC_LINK])
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195 | eb58f9b1 | Guido Trotter | script.write("export INTERFACE=$1\n")
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196 | eb58f9b1 | Guido Trotter | # TODO: make this configurable at ./configure time
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197 | 5420ffc9 | Guido Trotter | script.write("if [ -x '%s' ]; then\n" % self._KVM_NETWORK_SCRIPT) |
198 | eb58f9b1 | Guido Trotter | script.write(" # Execute the user-specific vif file\n")
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199 | 5420ffc9 | Guido Trotter | script.write(" %s\n" % self._KVM_NETWORK_SCRIPT) |
200 | eb58f9b1 | Guido Trotter | script.write("else\n")
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201 | eb58f9b1 | Guido Trotter | script.write(" /sbin/ifconfig $INTERFACE 0.0.0.0 up\n")
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202 | bef9c750 | Guido Trotter | if nic.nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
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203 | bef9c750 | Guido Trotter | script.write(" # Connect the interface to the bridge\n")
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204 | bef9c750 | Guido Trotter | script.write(" /usr/sbin/brctl addif $BRIDGE $INTERFACE\n")
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205 | bef9c750 | Guido Trotter | elif nic.nicparams[constants.NIC_MODE] == constants.NIC_MODE_ROUTED:
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206 | 94c2ed34 | Guido Trotter | if not nic.ip: |
207 | 94c2ed34 | Guido Trotter | raise errors.HypervisorError("nic/%d is routed, but has no ip." % seq) |
208 | bef9c750 | Guido Trotter | script.write(" # Route traffic targeted at the IP to the interface\n")
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209 | 7c60f7a2 | Guido Trotter | if nic.nicparams[constants.NIC_LINK]:
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210 | 2c5afffb | Guido Trotter | script.write(" while /sbin/ip rule del dev $INTERFACE; do :; done\n")
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211 | 2c5afffb | Guido Trotter | script.write(" /sbin/ip rule add dev $INTERFACE table $LINK\n")
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212 | 8866ec86 | Guido Trotter | script.write(" /sbin/ip route replace $IP table $LINK proto static"
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213 | d63218ce | Guido Trotter | " dev $INTERFACE\n")
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214 | 7c60f7a2 | Guido Trotter | else:
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215 | 8866ec86 | Guido Trotter | script.write(" /sbin/ip route replace $IP proto static"
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216 | 8866ec86 | Guido Trotter | " dev $INTERFACE\n")
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217 | e014f1d0 | Guido Trotter | interface_v4_conf = "/proc/sys/net/ipv4/conf/$INTERFACE"
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218 | e014f1d0 | Guido Trotter | interface_v6_conf = "/proc/sys/net/ipv6/conf/$INTERFACE"
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219 | e014f1d0 | Guido Trotter | script.write(" if [ -d %s ]; then\n" % interface_v4_conf)
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220 | e014f1d0 | Guido Trotter | script.write(" echo 1 > %s/proxy_arp\n" % interface_v4_conf)
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221 | e014f1d0 | Guido Trotter | script.write(" echo 1 > %s/forwarding\n" % interface_v4_conf)
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222 | e014f1d0 | Guido Trotter | script.write(" fi\n")
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223 | e014f1d0 | Guido Trotter | script.write(" if [ -d %s ]; then\n" % interface_v6_conf)
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224 | e014f1d0 | Guido Trotter | script.write(" echo 1 > %s/proxy_ndp\n" % interface_v6_conf)
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225 | e014f1d0 | Guido Trotter | script.write(" echo 1 > %s/forwarding\n" % interface_v6_conf)
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226 | e014f1d0 | Guido Trotter | script.write(" fi\n")
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227 | eb58f9b1 | Guido Trotter | script.write("fi\n\n")
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228 | eb58f9b1 | Guido Trotter | # As much as we'd like to put this in our _ROOT_DIR, that will happen to be
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229 | eb58f9b1 | Guido Trotter | # mounted noexec sometimes, so we'll have to find another place.
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230 | eb58f9b1 | Guido Trotter | (tmpfd, tmpfile_name) = tempfile.mkstemp() |
231 | eb58f9b1 | Guido Trotter | tmpfile = os.fdopen(tmpfd, 'w')
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232 | d73ef63f | Michael Hanselmann | try:
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233 | d73ef63f | Michael Hanselmann | tmpfile.write(script.getvalue()) |
234 | d73ef63f | Michael Hanselmann | finally:
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235 | d73ef63f | Michael Hanselmann | tmpfile.close() |
236 | eb58f9b1 | Guido Trotter | os.chmod(tmpfile_name, 0755)
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237 | eb58f9b1 | Guido Trotter | return tmpfile_name
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238 | eb58f9b1 | Guido Trotter | |
239 | eb58f9b1 | Guido Trotter | def ListInstances(self): |
240 | eb58f9b1 | Guido Trotter | """Get the list of running instances.
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241 | eb58f9b1 | Guido Trotter |
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242 | c41eea6e | Iustin Pop | We can do this by listing our live instances directory and
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243 | c41eea6e | Iustin Pop | checking whether the associated kvm process is still alive.
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244 | eb58f9b1 | Guido Trotter |
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245 | eb58f9b1 | Guido Trotter | """
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246 | eb58f9b1 | Guido Trotter | result = [] |
247 | eb58f9b1 | Guido Trotter | for name in os.listdir(self._PIDS_DIR): |
248 | 08137f9e | Iustin Pop | filename = "%s/%s" % (self._PIDS_DIR, name) |
249 | 08137f9e | Iustin Pop | if utils.IsProcessAlive(utils.ReadPidFile(filename)):
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250 | eb58f9b1 | Guido Trotter | result.append(name) |
251 | eb58f9b1 | Guido Trotter | return result
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252 | eb58f9b1 | Guido Trotter | |
253 | eb58f9b1 | Guido Trotter | def GetInstanceInfo(self, instance_name): |
254 | eb58f9b1 | Guido Trotter | """Get instance properties.
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255 | eb58f9b1 | Guido Trotter |
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256 | c41eea6e | Iustin Pop | @param instance_name: the instance name
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257 | c41eea6e | Iustin Pop |
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258 | c41eea6e | Iustin Pop | @return: tuple (name, id, memory, vcpus, stat, times)
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259 | eb58f9b1 | Guido Trotter |
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260 | eb58f9b1 | Guido Trotter | """
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261 | 1122eb25 | Iustin Pop | _, pid, alive = self._InstancePidAlive(instance_name)
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262 | 1f8b3a27 | Guido Trotter | if not alive: |
263 | eb58f9b1 | Guido Trotter | return None |
264 | eb58f9b1 | Guido Trotter | |
265 | eb58f9b1 | Guido Trotter | cmdline_file = "/proc/%s/cmdline" % pid
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266 | eb58f9b1 | Guido Trotter | try:
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267 | 1e37ad45 | Michael Hanselmann | cmdline = utils.ReadFile(cmdline_file) |
268 | 90c024f6 | Guido Trotter | except EnvironmentError, err: |
269 | eb58f9b1 | Guido Trotter | raise errors.HypervisorError("Failed to list instance %s: %s" % |
270 | eb58f9b1 | Guido Trotter | (instance_name, err)) |
271 | eb58f9b1 | Guido Trotter | |
272 | eb58f9b1 | Guido Trotter | memory = 0
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273 | eb58f9b1 | Guido Trotter | vcpus = 0
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274 | eb58f9b1 | Guido Trotter | stat = "---b-"
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275 | eb58f9b1 | Guido Trotter | times = "0"
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276 | eb58f9b1 | Guido Trotter | |
277 | eb58f9b1 | Guido Trotter | arg_list = cmdline.split('\x00')
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278 | eb58f9b1 | Guido Trotter | while arg_list:
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279 | eb58f9b1 | Guido Trotter | arg = arg_list.pop(0)
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280 | eb58f9b1 | Guido Trotter | if arg == '-m': |
281 | 2a7e887b | Guido Trotter | memory = int(arg_list.pop(0)) |
282 | eb58f9b1 | Guido Trotter | elif arg == '-smp': |
283 | 2a7e887b | Guido Trotter | vcpus = int(arg_list.pop(0)) |
284 | eb58f9b1 | Guido Trotter | |
285 | eb58f9b1 | Guido Trotter | return (instance_name, pid, memory, vcpus, stat, times)
|
286 | eb58f9b1 | Guido Trotter | |
287 | eb58f9b1 | Guido Trotter | def GetAllInstancesInfo(self): |
288 | eb58f9b1 | Guido Trotter | """Get properties of all instances.
|
289 | eb58f9b1 | Guido Trotter |
|
290 | c41eea6e | Iustin Pop | @return: list of tuples (name, id, memory, vcpus, stat, times)
|
291 | c41eea6e | Iustin Pop |
|
292 | eb58f9b1 | Guido Trotter | """
|
293 | eb58f9b1 | Guido Trotter | data = [] |
294 | eb58f9b1 | Guido Trotter | for name in os.listdir(self._PIDS_DIR): |
295 | 08137f9e | Iustin Pop | filename = "%s/%s" % (self._PIDS_DIR, name) |
296 | 08137f9e | Iustin Pop | if utils.IsProcessAlive(utils.ReadPidFile(filename)):
|
297 | 00ad5362 | Guido Trotter | try:
|
298 | 00ad5362 | Guido Trotter | info = self.GetInstanceInfo(name)
|
299 | 1122eb25 | Iustin Pop | except errors.HypervisorError:
|
300 | 00ad5362 | Guido Trotter | continue
|
301 | 00ad5362 | Guido Trotter | if info:
|
302 | 00ad5362 | Guido Trotter | data.append(info) |
303 | eb58f9b1 | Guido Trotter | |
304 | eb58f9b1 | Guido Trotter | return data
|
305 | eb58f9b1 | Guido Trotter | |
306 | 07813a9e | Iustin Pop | def _GenerateKVMRuntime(self, instance, block_devices): |
307 | ee5f20b0 | Guido Trotter | """Generate KVM information to start an instance.
|
308 | eb58f9b1 | Guido Trotter |
|
309 | eb58f9b1 | Guido Trotter | """
|
310 | 98ec75d6 | Iustin Pop | pidfile = self._InstancePidFile(instance.name)
|
311 | eb58f9b1 | Guido Trotter | kvm = constants.KVM_PATH |
312 | eb58f9b1 | Guido Trotter | kvm_cmd = [kvm] |
313 | 8b3fd458 | Iustin Pop | kvm_cmd.extend(['-m', instance.beparams[constants.BE_MEMORY]])
|
314 | 8b3fd458 | Iustin Pop | kvm_cmd.extend(['-smp', instance.beparams[constants.BE_VCPUS]])
|
315 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-pidfile', pidfile])
|
316 | eb58f9b1 | Guido Trotter | # used just by the vnc server, if enabled
|
317 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-name', instance.name])
|
318 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-daemonize'])
|
319 | 6b5605e8 | Iustin Pop | if not instance.hvparams[constants.HV_ACPI]: |
320 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-no-acpi'])
|
321 | eb58f9b1 | Guido Trotter | |
322 | a985b417 | Iustin Pop | hvp = instance.hvparams |
323 | 835528af | Iustin Pop | boot_disk = hvp[constants.HV_BOOT_ORDER] == constants.HT_BO_DISK |
324 | 835528af | Iustin Pop | boot_cdrom = hvp[constants.HV_BOOT_ORDER] == constants.HT_BO_CDROM |
325 | 835528af | Iustin Pop | boot_network = hvp[constants.HV_BOOT_ORDER] == constants.HT_BO_NETWORK |
326 | 8745c3d7 | Guido Trotter | |
327 | 8745c3d7 | Guido Trotter | if boot_network:
|
328 | 8745c3d7 | Guido Trotter | kvm_cmd.extend(['-boot', 'n']) |
329 | 1213604d | Guido Trotter | |
330 | a985b417 | Iustin Pop | disk_type = hvp[constants.HV_DISK_TYPE] |
331 | 1213604d | Guido Trotter | if disk_type == constants.HT_DISK_PARAVIRTUAL:
|
332 | 1213604d | Guido Trotter | if_val = ',if=virtio'
|
333 | 1213604d | Guido Trotter | else:
|
334 | 1213604d | Guido Trotter | if_val = ',if=%s' % disk_type
|
335 | 19572932 | Iustin Pop | # Cache mode
|
336 | 19572932 | Iustin Pop | disk_cache = hvp[constants.HV_DISK_CACHE] |
337 | 19572932 | Iustin Pop | if disk_cache != constants.HT_CACHE_DEFAULT:
|
338 | 19572932 | Iustin Pop | cache_val = ",cache=%s" % disk_cache
|
339 | 19572932 | Iustin Pop | else:
|
340 | 19572932 | Iustin Pop | cache_val = ""
|
341 | 069cfbf1 | Iustin Pop | for cfdev, dev_path in block_devices: |
342 | d34b16d7 | Iustin Pop | if cfdev.mode != constants.DISK_RDWR:
|
343 | d34b16d7 | Iustin Pop | raise errors.HypervisorError("Instance has read-only disks which" |
344 | d34b16d7 | Iustin Pop | " are not supported by KVM")
|
345 | eb58f9b1 | Guido Trotter | # TODO: handle FD_LOOP and FD_BLKTAP (?)
|
346 | 66d5dbef | Guido Trotter | if boot_disk:
|
347 | 9dd363eb | Guido Trotter | kvm_cmd.extend(['-boot', 'c']) |
348 | eb58f9b1 | Guido Trotter | boot_val = ',boot=on'
|
349 | 8745c3d7 | Guido Trotter | # We only boot from the first disk
|
350 | 66d5dbef | Guido Trotter | boot_disk = False
|
351 | eb58f9b1 | Guido Trotter | else:
|
352 | eb58f9b1 | Guido Trotter | boot_val = ''
|
353 | eb58f9b1 | Guido Trotter | |
354 | 19572932 | Iustin Pop | drive_val = 'file=%s,format=raw%s%s%s' % (dev_path, if_val, boot_val,
|
355 | 19572932 | Iustin Pop | cache_val) |
356 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-drive', drive_val])
|
357 | eb58f9b1 | Guido Trotter | |
358 | a985b417 | Iustin Pop | iso_image = hvp[constants.HV_CDROM_IMAGE_PATH] |
359 | 66d5dbef | Guido Trotter | if iso_image:
|
360 | 9dd363eb | Guido Trotter | options = ',format=raw,media=cdrom'
|
361 | 66d5dbef | Guido Trotter | if boot_cdrom:
|
362 | 9dd363eb | Guido Trotter | kvm_cmd.extend(['-boot', 'd']) |
363 | 66d5dbef | Guido Trotter | options = '%s,boot=on' % options
|
364 | 9dd363eb | Guido Trotter | else:
|
365 | 9dd363eb | Guido Trotter | options = '%s,if=virtio' % options
|
366 | 66d5dbef | Guido Trotter | drive_val = 'file=%s%s' % (iso_image, options)
|
367 | 66d5dbef | Guido Trotter | kvm_cmd.extend(['-drive', drive_val])
|
368 | 66d5dbef | Guido Trotter | |
369 | a985b417 | Iustin Pop | kernel_path = hvp[constants.HV_KERNEL_PATH] |
370 | df5ab9f0 | Guido Trotter | if kernel_path:
|
371 | df5ab9f0 | Guido Trotter | kvm_cmd.extend(['-kernel', kernel_path])
|
372 | a985b417 | Iustin Pop | initrd_path = hvp[constants.HV_INITRD_PATH] |
373 | df5ab9f0 | Guido Trotter | if initrd_path:
|
374 | df5ab9f0 | Guido Trotter | kvm_cmd.extend(['-initrd', initrd_path])
|
375 | 07813a9e | Iustin Pop | root_append = ['root=%s' % hvp[constants.HV_ROOT_PATH],
|
376 | 07813a9e | Iustin Pop | hvp[constants.HV_KERNEL_ARGS]] |
377 | 07813a9e | Iustin Pop | if hvp[constants.HV_SERIAL_CONSOLE]:
|
378 | 07813a9e | Iustin Pop | root_append.append('console=ttyS0,38400')
|
379 | 07813a9e | Iustin Pop | kvm_cmd.extend(['-append', ' '.join(root_append)]) |
380 | eb58f9b1 | Guido Trotter | |
381 | a985b417 | Iustin Pop | mouse_type = hvp[constants.HV_USB_MOUSE] |
382 | 11344a50 | Guido Trotter | if mouse_type:
|
383 | 11344a50 | Guido Trotter | kvm_cmd.extend(['-usb'])
|
384 | 11344a50 | Guido Trotter | kvm_cmd.extend(['-usbdevice', mouse_type])
|
385 | 11344a50 | Guido Trotter | |
386 | a985b417 | Iustin Pop | vnc_bind_address = hvp[constants.HV_VNC_BIND_ADDRESS] |
387 | 8470c8db | Guido Trotter | if vnc_bind_address:
|
388 | 8447f52b | Guido Trotter | if utils.IsValidIP(vnc_bind_address):
|
389 | 377d74c9 | Guido Trotter | if instance.network_port > constants.VNC_BASE_PORT:
|
390 | 377d74c9 | Guido Trotter | display = instance.network_port - constants.VNC_BASE_PORT |
391 | 8447f52b | Guido Trotter | if vnc_bind_address == '0.0.0.0': |
392 | 8447f52b | Guido Trotter | vnc_arg = ':%d' % (display)
|
393 | 8447f52b | Guido Trotter | else:
|
394 | 19498d6c | Guido Trotter | vnc_arg = '%s:%d' % (vnc_bind_address, display)
|
395 | 8470c8db | Guido Trotter | else:
|
396 | 8447f52b | Guido Trotter | logging.error("Network port is not a valid VNC display (%d < %d)."
|
397 | 07b8a2b5 | Iustin Pop | " Not starting VNC", instance.network_port,
|
398 | 07b8a2b5 | Iustin Pop | constants.VNC_BASE_PORT) |
399 | 8447f52b | Guido Trotter | vnc_arg = 'none'
|
400 | 8b2d1013 | Guido Trotter | |
401 | 8b2d1013 | Guido Trotter | # Only allow tls and other option when not binding to a file, for now.
|
402 | 8b2d1013 | Guido Trotter | # kvm/qemu gets confused otherwise about the filename to use.
|
403 | 8b2d1013 | Guido Trotter | vnc_append = ''
|
404 | a985b417 | Iustin Pop | if hvp[constants.HV_VNC_TLS]:
|
405 | 8b2d1013 | Guido Trotter | vnc_append = '%s,tls' % vnc_append
|
406 | a985b417 | Iustin Pop | if hvp[constants.HV_VNC_X509_VERIFY]:
|
407 | 8b2d1013 | Guido Trotter | vnc_append = '%s,x509verify=%s' % (vnc_append,
|
408 | a985b417 | Iustin Pop | hvp[constants.HV_VNC_X509]) |
409 | a985b417 | Iustin Pop | elif hvp[constants.HV_VNC_X509]:
|
410 | 8b2d1013 | Guido Trotter | vnc_append = '%s,x509=%s' % (vnc_append,
|
411 | a985b417 | Iustin Pop | hvp[constants.HV_VNC_X509]) |
412 | 6e6bb8d5 | Guido Trotter | if hvp[constants.HV_VNC_PASSWORD_FILE]:
|
413 | 6e6bb8d5 | Guido Trotter | vnc_append = '%s,password' % vnc_append
|
414 | 6e6bb8d5 | Guido Trotter | |
415 | 8b2d1013 | Guido Trotter | vnc_arg = '%s%s' % (vnc_arg, vnc_append)
|
416 | 8b2d1013 | Guido Trotter | |
417 | 8470c8db | Guido Trotter | else:
|
418 | 8b2d1013 | Guido Trotter | vnc_arg = 'unix:%s/%s.vnc' % (vnc_bind_address, instance.name)
|
419 | 8b2d1013 | Guido Trotter | |
420 | 8447f52b | Guido Trotter | kvm_cmd.extend(['-vnc', vnc_arg])
|
421 | 8470c8db | Guido Trotter | else:
|
422 | 8470c8db | Guido Trotter | kvm_cmd.extend(['-nographic'])
|
423 | 8470c8db | Guido Trotter | |
424 | 69b99987 | Michael Hanselmann | monitor_dev = ("unix:%s,server,nowait" %
|
425 | 69b99987 | Michael Hanselmann | self._InstanceMonitor(instance.name))
|
426 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-monitor', monitor_dev])
|
427 | a985b417 | Iustin Pop | if hvp[constants.HV_SERIAL_CONSOLE]:
|
428 | a985b417 | Iustin Pop | serial_dev = ('unix:%s,server,nowait' %
|
429 | a985b417 | Iustin Pop | self._InstanceSerial(instance.name))
|
430 | a2faf9ee | Guido Trotter | kvm_cmd.extend(['-serial', serial_dev])
|
431 | a2faf9ee | Guido Trotter | else:
|
432 | a2faf9ee | Guido Trotter | kvm_cmd.extend(['-serial', 'none']) |
433 | eb58f9b1 | Guido Trotter | |
434 | 6b970cef | Jun Futagawa | if hvp[constants.HV_USE_LOCALTIME]:
|
435 | 6b970cef | Jun Futagawa | kvm_cmd.extend(['-localtime'])
|
436 | 6b970cef | Jun Futagawa | |
437 | ee5f20b0 | Guido Trotter | # Save the current instance nics, but defer their expansion as parameters,
|
438 | ee5f20b0 | Guido Trotter | # as we'll need to generate executable temp files for them.
|
439 | ee5f20b0 | Guido Trotter | kvm_nics = instance.nics |
440 | a985b417 | Iustin Pop | hvparams = hvp |
441 | ee5f20b0 | Guido Trotter | |
442 | c2672466 | Guido Trotter | return (kvm_cmd, kvm_nics, hvparams)
|
443 | ee5f20b0 | Guido Trotter | |
444 | 38e250ba | Guido Trotter | def _WriteKVMRuntime(self, instance_name, data): |
445 | 38e250ba | Guido Trotter | """Write an instance's KVM runtime
|
446 | 38e250ba | Guido Trotter |
|
447 | 38e250ba | Guido Trotter | """
|
448 | 38e250ba | Guido Trotter | try:
|
449 | 38e250ba | Guido Trotter | utils.WriteFile(self._InstanceKVMRuntime(instance_name),
|
450 | 38e250ba | Guido Trotter | data=data) |
451 | 90c024f6 | Guido Trotter | except EnvironmentError, err: |
452 | 38e250ba | Guido Trotter | raise errors.HypervisorError("Failed to save KVM runtime file: %s" % err) |
453 | 38e250ba | Guido Trotter | |
454 | 38e250ba | Guido Trotter | def _ReadKVMRuntime(self, instance_name): |
455 | 38e250ba | Guido Trotter | """Read an instance's KVM runtime
|
456 | 38e250ba | Guido Trotter |
|
457 | 38e250ba | Guido Trotter | """
|
458 | 38e250ba | Guido Trotter | try:
|
459 | 38e250ba | Guido Trotter | file_content = utils.ReadFile(self._InstanceKVMRuntime(instance_name))
|
460 | 90c024f6 | Guido Trotter | except EnvironmentError, err: |
461 | 38e250ba | Guido Trotter | raise errors.HypervisorError("Failed to load KVM runtime file: %s" % err) |
462 | 38e250ba | Guido Trotter | return file_content
|
463 | 38e250ba | Guido Trotter | |
464 | 38e250ba | Guido Trotter | def _SaveKVMRuntime(self, instance, kvm_runtime): |
465 | 38e250ba | Guido Trotter | """Save an instance's KVM runtime
|
466 | 38e250ba | Guido Trotter |
|
467 | 38e250ba | Guido Trotter | """
|
468 | c2672466 | Guido Trotter | kvm_cmd, kvm_nics, hvparams = kvm_runtime |
469 | 38e250ba | Guido Trotter | serialized_nics = [nic.ToDict() for nic in kvm_nics] |
470 | c2672466 | Guido Trotter | serialized_form = serializer.Dump((kvm_cmd, serialized_nics, hvparams)) |
471 | 38e250ba | Guido Trotter | self._WriteKVMRuntime(instance.name, serialized_form)
|
472 | 38e250ba | Guido Trotter | |
473 | 30e42c4e | Guido Trotter | def _LoadKVMRuntime(self, instance, serialized_runtime=None): |
474 | 38e250ba | Guido Trotter | """Load an instance's KVM runtime
|
475 | 38e250ba | Guido Trotter |
|
476 | 38e250ba | Guido Trotter | """
|
477 | 30e42c4e | Guido Trotter | if not serialized_runtime: |
478 | 30e42c4e | Guido Trotter | serialized_runtime = self._ReadKVMRuntime(instance.name)
|
479 | 30e42c4e | Guido Trotter | loaded_runtime = serializer.Load(serialized_runtime) |
480 | c2672466 | Guido Trotter | kvm_cmd, serialized_nics, hvparams = loaded_runtime |
481 | 38e250ba | Guido Trotter | kvm_nics = [objects.NIC.FromDict(snic) for snic in serialized_nics] |
482 | c2672466 | Guido Trotter | return (kvm_cmd, kvm_nics, hvparams)
|
483 | 38e250ba | Guido Trotter | |
484 | 30e42c4e | Guido Trotter | def _ExecuteKVMRuntime(self, instance, kvm_runtime, incoming=None): |
485 | ee5f20b0 | Guido Trotter | """Execute a KVM cmd, after completing it with some last minute data
|
486 | ee5f20b0 | Guido Trotter |
|
487 | 30e42c4e | Guido Trotter | @type incoming: tuple of strings
|
488 | 30e42c4e | Guido Trotter | @param incoming: (target_host_ip, port)
|
489 | 30e42c4e | Guido Trotter |
|
490 | ee5f20b0 | Guido Trotter | """
|
491 | 6e6bb8d5 | Guido Trotter | hvp = instance.hvparams |
492 | 5905901c | Iustin Pop | name = instance.name |
493 | 5905901c | Iustin Pop | self._CheckDown(name)
|
494 | ee5f20b0 | Guido Trotter | |
495 | ee5f20b0 | Guido Trotter | temp_files = [] |
496 | ee5f20b0 | Guido Trotter | |
497 | c2672466 | Guido Trotter | kvm_cmd, kvm_nics, hvparams = kvm_runtime |
498 | ee5f20b0 | Guido Trotter | |
499 | ee5f20b0 | Guido Trotter | if not kvm_nics: |
500 | ee5f20b0 | Guido Trotter | kvm_cmd.extend(['-net', 'none']) |
501 | ee5f20b0 | Guido Trotter | else:
|
502 | 37f88dc6 | Guido Trotter | nic_type = hvparams[constants.HV_NIC_TYPE] |
503 | 37f88dc6 | Guido Trotter | if nic_type == constants.HT_NIC_PARAVIRTUAL:
|
504 | 37f88dc6 | Guido Trotter | nic_model = "model=virtio"
|
505 | 37f88dc6 | Guido Trotter | else:
|
506 | 37f88dc6 | Guido Trotter | nic_model = "model=%s" % nic_type
|
507 | 37f88dc6 | Guido Trotter | |
508 | ee5f20b0 | Guido Trotter | for nic_seq, nic in enumerate(kvm_nics): |
509 | 37f88dc6 | Guido Trotter | nic_val = "nic,macaddr=%s,%s" % (nic.mac, nic_model)
|
510 | ee5f20b0 | Guido Trotter | script = self._WriteNetScript(instance, nic_seq, nic)
|
511 | ee5f20b0 | Guido Trotter | kvm_cmd.extend(['-net', nic_val])
|
512 | ee5f20b0 | Guido Trotter | kvm_cmd.extend(['-net', 'tap,script=%s' % script]) |
513 | ee5f20b0 | Guido Trotter | temp_files.append(script) |
514 | ee5f20b0 | Guido Trotter | |
515 | 30e42c4e | Guido Trotter | if incoming:
|
516 | 30e42c4e | Guido Trotter | target, port = incoming |
517 | 30e42c4e | Guido Trotter | kvm_cmd.extend(['-incoming', 'tcp:%s:%s' % (target, port)]) |
518 | 30e42c4e | Guido Trotter | |
519 | 6e6bb8d5 | Guido Trotter | vnc_pwd_file = hvp[constants.HV_VNC_PASSWORD_FILE] |
520 | 6e6bb8d5 | Guido Trotter | vnc_pwd = None
|
521 | 6e6bb8d5 | Guido Trotter | if vnc_pwd_file:
|
522 | 6e6bb8d5 | Guido Trotter | try:
|
523 | 6e6bb8d5 | Guido Trotter | vnc_pwd = utils.ReadFile(vnc_pwd_file) |
524 | 6e6bb8d5 | Guido Trotter | except EnvironmentError, err: |
525 | 6e6bb8d5 | Guido Trotter | raise errors.HypervisorError("Failed to open VNC password file %s: %s" |
526 | 6e6bb8d5 | Guido Trotter | % (vnc_pwd_file, err)) |
527 | 6e6bb8d5 | Guido Trotter | |
528 | eb58f9b1 | Guido Trotter | result = utils.RunCmd(kvm_cmd) |
529 | eb58f9b1 | Guido Trotter | if result.failed:
|
530 | eb58f9b1 | Guido Trotter | raise errors.HypervisorError("Failed to start instance %s: %s (%s)" % |
531 | 5905901c | Iustin Pop | (name, result.fail_reason, result.output)) |
532 | eb58f9b1 | Guido Trotter | |
533 | 5905901c | Iustin Pop | if not self._InstancePidAlive(name)[2]: |
534 | 5905901c | Iustin Pop | raise errors.HypervisorError("Failed to start instance %s" % name) |
535 | eb58f9b1 | Guido Trotter | |
536 | 6e6bb8d5 | Guido Trotter | if vnc_pwd:
|
537 | 6e6bb8d5 | Guido Trotter | change_cmd = 'change vnc password %s' % vnc_pwd
|
538 | 6e6bb8d5 | Guido Trotter | self._CallMonitorCommand(instance.name, change_cmd)
|
539 | 6e6bb8d5 | Guido Trotter | |
540 | 08137f9e | Iustin Pop | for filename in temp_files: |
541 | 08137f9e | Iustin Pop | utils.RemoveFile(filename) |
542 | eb58f9b1 | Guido Trotter | |
543 | 07813a9e | Iustin Pop | def StartInstance(self, instance, block_devices): |
544 | ee5f20b0 | Guido Trotter | """Start an instance.
|
545 | ee5f20b0 | Guido Trotter |
|
546 | ee5f20b0 | Guido Trotter | """
|
547 | 5905901c | Iustin Pop | self._CheckDown(instance.name)
|
548 | 07813a9e | Iustin Pop | kvm_runtime = self._GenerateKVMRuntime(instance, block_devices)
|
549 | 38e250ba | Guido Trotter | self._SaveKVMRuntime(instance, kvm_runtime)
|
550 | ee5f20b0 | Guido Trotter | self._ExecuteKVMRuntime(instance, kvm_runtime)
|
551 | ee5f20b0 | Guido Trotter | |
552 | 6567aff3 | Guido Trotter | def _CallMonitorCommand(self, instance_name, command): |
553 | 6567aff3 | Guido Trotter | """Invoke a command on the instance monitor.
|
554 | 6567aff3 | Guido Trotter |
|
555 | 6567aff3 | Guido Trotter | """
|
556 | 6567aff3 | Guido Trotter | socat = ("echo %s | %s STDIO UNIX-CONNECT:%s" %
|
557 | 6567aff3 | Guido Trotter | (utils.ShellQuote(command), |
558 | 6567aff3 | Guido Trotter | constants.SOCAT_PATH, |
559 | 6567aff3 | Guido Trotter | utils.ShellQuote(self._InstanceMonitor(instance_name))))
|
560 | 6567aff3 | Guido Trotter | result = utils.RunCmd(socat) |
561 | 6567aff3 | Guido Trotter | if result.failed:
|
562 | 6567aff3 | Guido Trotter | msg = ("Failed to send command '%s' to instance %s."
|
563 | 6567aff3 | Guido Trotter | " output: %s, error: %s, fail_reason: %s" %
|
564 | 9798fcae | Guido Trotter | (command, instance_name, |
565 | 9798fcae | Guido Trotter | result.stdout, result.stderr, result.fail_reason)) |
566 | 6567aff3 | Guido Trotter | raise errors.HypervisorError(msg)
|
567 | 6567aff3 | Guido Trotter | |
568 | 6567aff3 | Guido Trotter | return result
|
569 | 6567aff3 | Guido Trotter | |
570 | 07b49e41 | Guido Trotter | def StopInstance(self, instance, force=False, retry=False): |
571 | eb58f9b1 | Guido Trotter | """Stop an instance.
|
572 | eb58f9b1 | Guido Trotter |
|
573 | eb58f9b1 | Guido Trotter | """
|
574 | 1f8b3a27 | Guido Trotter | pidfile, pid, alive = self._InstancePidAlive(instance.name)
|
575 | 1f8b3a27 | Guido Trotter | if pid > 0 and alive: |
576 | 6b5605e8 | Iustin Pop | if force or not instance.hvparams[constants.HV_ACPI]: |
577 | eb58f9b1 | Guido Trotter | utils.KillProcess(pid) |
578 | eb58f9b1 | Guido Trotter | else:
|
579 | 4ad45119 | Guido Trotter | self._CallMonitorCommand(instance.name, 'system_powerdown') |
580 | eb58f9b1 | Guido Trotter | |
581 | eb58f9b1 | Guido Trotter | if not utils.IsProcessAlive(pid): |
582 | 7e66c35b | Guido Trotter | self._RemoveInstanceRuntimeFiles(pidfile, instance.name)
|
583 | 6567aff3 | Guido Trotter | return True |
584 | 6567aff3 | Guido Trotter | else:
|
585 | 6567aff3 | Guido Trotter | return False |
586 | eb58f9b1 | Guido Trotter | |
587 | eb58f9b1 | Guido Trotter | def RebootInstance(self, instance): |
588 | eb58f9b1 | Guido Trotter | """Reboot an instance.
|
589 | eb58f9b1 | Guido Trotter |
|
590 | eb58f9b1 | Guido Trotter | """
|
591 | eb58f9b1 | Guido Trotter | # For some reason if we do a 'send-key ctrl-alt-delete' to the control
|
592 | eb58f9b1 | Guido Trotter | # socket the instance will stop, but now power up again. So we'll resort
|
593 | eb58f9b1 | Guido Trotter | # to shutdown and restart.
|
594 | 1122eb25 | Iustin Pop | _, _, alive = self._InstancePidAlive(instance.name)
|
595 | 1f8b3a27 | Guido Trotter | if not alive: |
596 | 78411c60 | Iustin Pop | raise errors.HypervisorError("Failed to reboot instance %s:" |
597 | 78411c60 | Iustin Pop | " not running" % instance.name)
|
598 | f02881e0 | Guido Trotter | # StopInstance will delete the saved KVM runtime so:
|
599 | f02881e0 | Guido Trotter | # ...first load it...
|
600 | f02881e0 | Guido Trotter | kvm_runtime = self._LoadKVMRuntime(instance)
|
601 | f02881e0 | Guido Trotter | # ...now we can safely call StopInstance...
|
602 | f02881e0 | Guido Trotter | if not self.StopInstance(instance): |
603 | f02881e0 | Guido Trotter | self.StopInstance(instance, force=True) |
604 | f02881e0 | Guido Trotter | # ...and finally we can save it again, and execute it...
|
605 | f02881e0 | Guido Trotter | self._SaveKVMRuntime(instance, kvm_runtime)
|
606 | f02881e0 | Guido Trotter | self._ExecuteKVMRuntime(instance, kvm_runtime)
|
607 | eb58f9b1 | Guido Trotter | |
608 | 30e42c4e | Guido Trotter | def MigrationInfo(self, instance): |
609 | 30e42c4e | Guido Trotter | """Get instance information to perform a migration.
|
610 | 30e42c4e | Guido Trotter |
|
611 | 30e42c4e | Guido Trotter | @type instance: L{objects.Instance}
|
612 | 30e42c4e | Guido Trotter | @param instance: instance to be migrated
|
613 | 30e42c4e | Guido Trotter | @rtype: string
|
614 | 30e42c4e | Guido Trotter | @return: content of the KVM runtime file
|
615 | 30e42c4e | Guido Trotter |
|
616 | 30e42c4e | Guido Trotter | """
|
617 | 30e42c4e | Guido Trotter | return self._ReadKVMRuntime(instance.name) |
618 | 30e42c4e | Guido Trotter | |
619 | 30e42c4e | Guido Trotter | def AcceptInstance(self, instance, info, target): |
620 | 30e42c4e | Guido Trotter | """Prepare to accept an instance.
|
621 | 30e42c4e | Guido Trotter |
|
622 | 30e42c4e | Guido Trotter | @type instance: L{objects.Instance}
|
623 | 30e42c4e | Guido Trotter | @param instance: instance to be accepted
|
624 | 30e42c4e | Guido Trotter | @type info: string
|
625 | 30e42c4e | Guido Trotter | @param info: content of the KVM runtime file on the source node
|
626 | 30e42c4e | Guido Trotter | @type target: string
|
627 | 30e42c4e | Guido Trotter | @param target: target host (usually ip), on this node
|
628 | 30e42c4e | Guido Trotter |
|
629 | 30e42c4e | Guido Trotter | """
|
630 | 30e42c4e | Guido Trotter | kvm_runtime = self._LoadKVMRuntime(instance, serialized_runtime=info)
|
631 | 641ae041 | Iustin Pop | incoming_address = (target, instance.hvparams[constants.HV_MIGRATION_PORT]) |
632 | 30e42c4e | Guido Trotter | self._ExecuteKVMRuntime(instance, kvm_runtime, incoming=incoming_address)
|
633 | 30e42c4e | Guido Trotter | |
634 | 30e42c4e | Guido Trotter | def FinalizeMigration(self, instance, info, success): |
635 | 30e42c4e | Guido Trotter | """Finalize an instance migration.
|
636 | 30e42c4e | Guido Trotter |
|
637 | 30e42c4e | Guido Trotter | Stop the incoming mode KVM.
|
638 | 30e42c4e | Guido Trotter |
|
639 | 30e42c4e | Guido Trotter | @type instance: L{objects.Instance}
|
640 | 30e42c4e | Guido Trotter | @param instance: instance whose migration is being aborted
|
641 | 30e42c4e | Guido Trotter |
|
642 | 30e42c4e | Guido Trotter | """
|
643 | 30e42c4e | Guido Trotter | if success:
|
644 | 30e42c4e | Guido Trotter | self._WriteKVMRuntime(instance.name, info)
|
645 | 30e42c4e | Guido Trotter | else:
|
646 | 30e42c4e | Guido Trotter | self.StopInstance(instance, force=True) |
647 | 30e42c4e | Guido Trotter | |
648 | 58d38b02 | Iustin Pop | def MigrateInstance(self, instance, target, live): |
649 | 30e42c4e | Guido Trotter | """Migrate an instance to a target node.
|
650 | 30e42c4e | Guido Trotter |
|
651 | 30e42c4e | Guido Trotter | The migration will not be attempted if the instance is not
|
652 | 30e42c4e | Guido Trotter | currently running.
|
653 | 30e42c4e | Guido Trotter |
|
654 | 58d38b02 | Iustin Pop | @type instance: L{objects.Instance}
|
655 | 58d38b02 | Iustin Pop | @param instance: the instance to be migrated
|
656 | 30e42c4e | Guido Trotter | @type target: string
|
657 | 30e42c4e | Guido Trotter | @param target: ip address of the target node
|
658 | 30e42c4e | Guido Trotter | @type live: boolean
|
659 | 30e42c4e | Guido Trotter | @param live: perform a live migration
|
660 | 30e42c4e | Guido Trotter |
|
661 | 30e42c4e | Guido Trotter | """
|
662 | 58d38b02 | Iustin Pop | instance_name = instance.name |
663 | 50716be0 | Iustin Pop | port = instance.hvparams[constants.HV_MIGRATION_PORT] |
664 | 30e42c4e | Guido Trotter | pidfile, pid, alive = self._InstancePidAlive(instance_name)
|
665 | 30e42c4e | Guido Trotter | if not alive: |
666 | 30e42c4e | Guido Trotter | raise errors.HypervisorError("Instance not running, cannot migrate") |
667 | 30e42c4e | Guido Trotter | |
668 | 50716be0 | Iustin Pop | if not utils.TcpPing(target, port, live_port_needed=True): |
669 | 50716be0 | Iustin Pop | raise errors.HypervisorError("Remote host %s not listening on port" |
670 | 50716be0 | Iustin Pop | " %s, cannot migrate" % (target, port))
|
671 | 50716be0 | Iustin Pop | |
672 | 30e42c4e | Guido Trotter | if not live: |
673 | 30e42c4e | Guido Trotter | self._CallMonitorCommand(instance_name, 'stop') |
674 | 30e42c4e | Guido Trotter | |
675 | 641ae041 | Iustin Pop | migrate_command = 'migrate -d tcp:%s:%s' % (target, port)
|
676 | 30e42c4e | Guido Trotter | self._CallMonitorCommand(instance_name, migrate_command)
|
677 | 30e42c4e | Guido Trotter | |
678 | 30e42c4e | Guido Trotter | info_command = 'info migrate'
|
679 | 30e42c4e | Guido Trotter | done = False
|
680 | c4e388a5 | Guido Trotter | broken_answers = 0
|
681 | 30e42c4e | Guido Trotter | while not done: |
682 | 30e42c4e | Guido Trotter | result = self._CallMonitorCommand(instance_name, info_command)
|
683 | 30e42c4e | Guido Trotter | match = self._MIGRATION_STATUS_RE.search(result.stdout)
|
684 | 30e42c4e | Guido Trotter | if not match: |
685 | c4e388a5 | Guido Trotter | broken_answers += 1
|
686 | c4e388a5 | Guido Trotter | if not result.stdout: |
687 | c4e388a5 | Guido Trotter | logging.info("KVM: empty 'info migrate' result")
|
688 | c4e388a5 | Guido Trotter | else:
|
689 | e4dd2299 | Guido Trotter | logging.warning("KVM: unknown 'info migrate' result: %s",
|
690 | c4e388a5 | Guido Trotter | result.stdout) |
691 | c4e388a5 | Guido Trotter | time.sleep(self._MIGRATION_INFO_RETRY_DELAY)
|
692 | 30e42c4e | Guido Trotter | else:
|
693 | 30e42c4e | Guido Trotter | status = match.group(1)
|
694 | 30e42c4e | Guido Trotter | if status == 'completed': |
695 | 30e42c4e | Guido Trotter | done = True
|
696 | 30e42c4e | Guido Trotter | elif status == 'active': |
697 | c4e388a5 | Guido Trotter | # reset the broken answers count
|
698 | c4e388a5 | Guido Trotter | broken_answers = 0
|
699 | c4e388a5 | Guido Trotter | time.sleep(self._MIGRATION_INFO_RETRY_DELAY)
|
700 | c087266c | Guido Trotter | elif status == 'failed' or status == 'cancelled': |
701 | c087266c | Guido Trotter | if not live: |
702 | c087266c | Guido Trotter | self._CallMonitorCommand(instance_name, 'cont') |
703 | c087266c | Guido Trotter | raise errors.HypervisorError("Migration %s at the kvm level" % |
704 | c087266c | Guido Trotter | status) |
705 | 30e42c4e | Guido Trotter | else:
|
706 | c4e388a5 | Guido Trotter | logging.warning("KVM: unknown migration status '%s'", status)
|
707 | c4e388a5 | Guido Trotter | broken_answers += 1
|
708 | c4e388a5 | Guido Trotter | time.sleep(self._MIGRATION_INFO_RETRY_DELAY)
|
709 | c4e388a5 | Guido Trotter | if broken_answers >= self._MIGRATION_INFO_MAX_BAD_ANSWERS: |
710 | c4e388a5 | Guido Trotter | raise errors.HypervisorError("Too many 'info migrate' broken answers") |
711 | 30e42c4e | Guido Trotter | |
712 | 30e42c4e | Guido Trotter | utils.KillProcess(pid) |
713 | 7b381438 | Guido Trotter | self._RemoveInstanceRuntimeFiles(pidfile, instance_name)
|
714 | 30e42c4e | Guido Trotter | |
715 | eb58f9b1 | Guido Trotter | def GetNodeInfo(self): |
716 | eb58f9b1 | Guido Trotter | """Return information about the node.
|
717 | eb58f9b1 | Guido Trotter |
|
718 | 572e52bf | Iustin Pop | This is just a wrapper over the base GetLinuxNodeInfo method.
|
719 | 572e52bf | Iustin Pop |
|
720 | c41eea6e | Iustin Pop | @return: a dict with the following keys (values in MiB):
|
721 | c41eea6e | Iustin Pop | - memory_total: the total memory size on the node
|
722 | c41eea6e | Iustin Pop | - memory_free: the available memory on the node for instances
|
723 | c41eea6e | Iustin Pop | - memory_dom0: the memory used by the node itself, if available
|
724 | eb58f9b1 | Guido Trotter |
|
725 | eb58f9b1 | Guido Trotter | """
|
726 | 572e52bf | Iustin Pop | return self.GetLinuxNodeInfo() |
727 | eb58f9b1 | Guido Trotter | |
728 | 637ce7f9 | Guido Trotter | @classmethod
|
729 | 5431b2e4 | Guido Trotter | def GetShellCommandForConsole(cls, instance, hvparams, beparams): |
730 | eb58f9b1 | Guido Trotter | """Return a command for connecting to the console of an instance.
|
731 | eb58f9b1 | Guido Trotter |
|
732 | eb58f9b1 | Guido Trotter | """
|
733 | a2faf9ee | Guido Trotter | if hvparams[constants.HV_SERIAL_CONSOLE]:
|
734 | 86d6bc2a | Guido Trotter | shell_command = ("%s STDIO,%s UNIX-CONNECT:%s" %
|
735 | 86d6bc2a | Guido Trotter | (constants.SOCAT_PATH, cls._SocatUnixConsoleParams(), |
736 | a2faf9ee | Guido Trotter | utils.ShellQuote(cls._InstanceSerial(instance.name)))) |
737 | a2faf9ee | Guido Trotter | else:
|
738 | a2faf9ee | Guido Trotter | shell_command = "echo 'No serial shell for instance %s'" % instance.name
|
739 | 3be34f57 | Guido Trotter | |
740 | 3be34f57 | Guido Trotter | vnc_bind_address = hvparams[constants.HV_VNC_BIND_ADDRESS] |
741 | 3be34f57 | Guido Trotter | if vnc_bind_address:
|
742 | 377d74c9 | Guido Trotter | if instance.network_port > constants.VNC_BASE_PORT:
|
743 | 377d74c9 | Guido Trotter | display = instance.network_port - constants.VNC_BASE_PORT |
744 | 3be34f57 | Guido Trotter | vnc_command = ("echo 'Instance has VNC listening on %s:%d"
|
745 | 3be34f57 | Guido Trotter | " (display: %d)'" % (vnc_bind_address,
|
746 | 3be34f57 | Guido Trotter | instance.network_port, |
747 | 3be34f57 | Guido Trotter | display)) |
748 | 3be34f57 | Guido Trotter | shell_command = "%s; %s" % (vnc_command, shell_command)
|
749 | 3be34f57 | Guido Trotter | |
750 | a2faf9ee | Guido Trotter | return shell_command
|
751 | eb58f9b1 | Guido Trotter | |
752 | eb58f9b1 | Guido Trotter | def Verify(self): |
753 | eb58f9b1 | Guido Trotter | """Verify the hypervisor.
|
754 | eb58f9b1 | Guido Trotter |
|
755 | eb58f9b1 | Guido Trotter | Check that the binary exists.
|
756 | eb58f9b1 | Guido Trotter |
|
757 | eb58f9b1 | Guido Trotter | """
|
758 | eb58f9b1 | Guido Trotter | if not os.path.exists(constants.KVM_PATH): |
759 | eb58f9b1 | Guido Trotter | return "The kvm binary ('%s') does not exist." % constants.KVM_PATH |
760 | 14aa53cb | Guido Trotter | if not os.path.exists(constants.SOCAT_PATH): |
761 | 14aa53cb | Guido Trotter | return "The socat binary ('%s') does not exist." % constants.SOCAT_PATH |
762 | 14aa53cb | Guido Trotter | |
763 | 6b5605e8 | Iustin Pop | |
764 | 6b5605e8 | Iustin Pop | @classmethod
|
765 | 6b5605e8 | Iustin Pop | def CheckParameterSyntax(cls, hvparams): |
766 | 6b5605e8 | Iustin Pop | """Check the given parameters for validity.
|
767 | 6b5605e8 | Iustin Pop |
|
768 | 6b5605e8 | Iustin Pop | @type hvparams: dict
|
769 | 6b5605e8 | Iustin Pop | @param hvparams: dictionary with parameter names/value
|
770 | 6b5605e8 | Iustin Pop | @raise errors.HypervisorError: when a parameter is not valid
|
771 | 6b5605e8 | Iustin Pop |
|
772 | 6b5605e8 | Iustin Pop | """
|
773 | 47387b1e | Guido Trotter | super(KVMHypervisor, cls).CheckParameterSyntax(hvparams)
|
774 | 6b5605e8 | Iustin Pop | |
775 | df5ab9f0 | Guido Trotter | kernel_path = hvparams[constants.HV_KERNEL_PATH] |
776 | df5ab9f0 | Guido Trotter | if kernel_path:
|
777 | df5ab9f0 | Guido Trotter | if not hvparams[constants.HV_ROOT_PATH]: |
778 | 205ab586 | Iustin Pop | raise errors.HypervisorError("Need a root partition for the instance," |
779 | 205ab586 | Iustin Pop | " if a kernel is defined")
|
780 | 6b5605e8 | Iustin Pop | |
781 | 205ab586 | Iustin Pop | if (hvparams[constants.HV_VNC_X509_VERIFY] and |
782 | 205ab586 | Iustin Pop | not hvparams[constants.HV_VNC_X509]):
|
783 | 205ab586 | Iustin Pop | raise errors.HypervisorError("%s must be defined, if %s is" % |
784 | 205ab586 | Iustin Pop | (constants.HV_VNC_X509, |
785 | 205ab586 | Iustin Pop | constants.HV_VNC_X509_VERIFY)) |
786 | 66d5dbef | Guido Trotter | |
787 | 66d5dbef | Guido Trotter | boot_order = hvparams[constants.HV_BOOT_ORDER] |
788 | 66d5dbef | Guido Trotter | |
789 | 205ab586 | Iustin Pop | if (boot_order == constants.HT_BO_CDROM and |
790 | 205ab586 | Iustin Pop | not hvparams[constants.HV_CDROM_IMAGE_PATH]):
|
791 | 835528af | Iustin Pop | raise errors.HypervisorError("Cannot boot from cdrom without an" |
792 | 835528af | Iustin Pop | " ISO path")
|
793 | 205ab586 | Iustin Pop | if (boot_order == constants.HT_BO_NETWORK and |
794 | 205ab586 | Iustin Pop | hvparams[constants.HV_NIC_TYPE] == constants.HT_NIC_PARAVIRTUAL): |
795 | 8745c3d7 | Guido Trotter | raise errors.HypervisorError("Cannot boot from a paravirtual NIC. Please" |
796 | 835528af | Iustin Pop | " change the NIC type.")
|
797 | f5118ade | Iustin Pop | |
798 | f5118ade | Iustin Pop | @classmethod
|
799 | f5118ade | Iustin Pop | def PowercycleNode(cls): |
800 | f5118ade | Iustin Pop | """KVM powercycle, just a wrapper over Linux powercycle.
|
801 | f5118ade | Iustin Pop |
|
802 | f5118ade | Iustin Pop | """
|
803 | f5118ade | Iustin Pop | cls.LinuxPowercycle() |