root / lib / hypervisor / hv_kvm.py @ 9b94905f
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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 | 205ab586 | Iustin Pop | } |
76 | 6b5605e8 | Iustin Pop | |
77 | 30e42c4e | Guido Trotter | _MIGRATION_STATUS_RE = re.compile('Migration\s+status:\s+(\w+)',
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78 | 30e42c4e | Guido Trotter | re.M | re.I) |
79 | 30e42c4e | Guido Trotter | |
80 | 5420ffc9 | Guido Trotter | _KVM_NETWORK_SCRIPT = constants.SYSCONFDIR + "/ganeti/kvm-vif-bridge"
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81 | 5420ffc9 | Guido Trotter | |
82 | 64bfbc08 | Guido Trotter | ANCILLARY_FILES = [ |
83 | 64bfbc08 | Guido Trotter | _KVM_NETWORK_SCRIPT, |
84 | 64bfbc08 | Guido Trotter | ] |
85 | 64bfbc08 | Guido Trotter | |
86 | eb58f9b1 | Guido Trotter | def __init__(self): |
87 | eb58f9b1 | Guido Trotter | hv_base.BaseHypervisor.__init__(self)
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88 | eb58f9b1 | Guido Trotter | # Let's make sure the directories we need exist, even if the RUN_DIR lives
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89 | eb58f9b1 | Guido Trotter | # in a tmpfs filesystem or has been otherwise wiped out.
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90 | 29921401 | Iustin Pop | dirs = [(dname, constants.RUN_DIRS_MODE) for dname in self._DIRS] |
91 | 9afb67fe | Guido Trotter | utils.EnsureDirs(dirs) |
92 | eb58f9b1 | Guido Trotter | |
93 | 1f8b3a27 | Guido Trotter | def _InstancePidAlive(self, instance_name): |
94 | 1f8b3a27 | Guido Trotter | """Returns the instance pid and pidfile
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95 | 1f8b3a27 | Guido Trotter |
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96 | 1f8b3a27 | Guido Trotter | """
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97 | 1f8b3a27 | Guido Trotter | pidfile = "%s/%s" % (self._PIDS_DIR, instance_name) |
98 | 1f8b3a27 | Guido Trotter | pid = utils.ReadPidFile(pidfile) |
99 | 1f8b3a27 | Guido Trotter | alive = utils.IsProcessAlive(pid) |
100 | 1f8b3a27 | Guido Trotter | |
101 | 1f8b3a27 | Guido Trotter | return (pidfile, pid, alive)
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102 | 1f8b3a27 | Guido Trotter | |
103 | 0df4d98a | Guido Trotter | @classmethod
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104 | 0df4d98a | Guido Trotter | def _InstanceMonitor(cls, instance_name): |
105 | c4fbefc8 | Guido Trotter | """Returns the instance monitor socket name
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106 | c4fbefc8 | Guido Trotter |
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107 | c4fbefc8 | Guido Trotter | """
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108 | 0df4d98a | Guido Trotter | return '%s/%s.monitor' % (cls._CTRL_DIR, instance_name) |
109 | c4fbefc8 | Guido Trotter | |
110 | 0df4d98a | Guido Trotter | @classmethod
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111 | 0df4d98a | Guido Trotter | def _InstanceSerial(cls, instance_name): |
112 | c4fbefc8 | Guido Trotter | """Returns the instance serial socket name
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113 | c4fbefc8 | Guido Trotter |
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114 | c4fbefc8 | Guido Trotter | """
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115 | 0df4d98a | Guido Trotter | return '%s/%s.serial' % (cls._CTRL_DIR, instance_name) |
116 | c4fbefc8 | Guido Trotter | |
117 | 0df4d98a | Guido Trotter | @classmethod
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118 | 0df4d98a | Guido Trotter | def _InstanceKVMRuntime(cls, instance_name): |
119 | 38e250ba | Guido Trotter | """Returns the instance KVM runtime filename
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120 | 38e250ba | Guido Trotter |
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121 | 38e250ba | Guido Trotter | """
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122 | 0df4d98a | Guido Trotter | return '%s/%s.runtime' % (cls._CONF_DIR, instance_name) |
123 | 38e250ba | Guido Trotter | |
124 | 7e66c35b | Guido Trotter | @classmethod
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125 | 7e66c35b | Guido Trotter | def _RemoveInstanceRuntimeFiles(cls, pidfile, instance_name): |
126 | 7e66c35b | Guido Trotter | """Removes an instance's rutime sockets/files.
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127 | 7e66c35b | Guido Trotter |
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128 | 7e66c35b | Guido Trotter | """
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129 | 7e66c35b | Guido Trotter | utils.RemoveFile(pidfile) |
130 | 7e66c35b | Guido Trotter | utils.RemoveFile(cls._InstanceMonitor(instance_name)) |
131 | 7e66c35b | Guido Trotter | utils.RemoveFile(cls._InstanceSerial(instance_name)) |
132 | 7e66c35b | Guido Trotter | utils.RemoveFile(cls._InstanceKVMRuntime(instance_name)) |
133 | 7e66c35b | Guido Trotter | |
134 | eb58f9b1 | Guido Trotter | def _WriteNetScript(self, instance, seq, nic): |
135 | eb58f9b1 | Guido Trotter | """Write a script to connect a net interface to the proper bridge.
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136 | eb58f9b1 | Guido Trotter |
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137 | eb58f9b1 | Guido Trotter | This can be used by any qemu-type hypervisor.
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138 | eb58f9b1 | Guido Trotter |
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139 | eb58f9b1 | Guido Trotter | @param instance: instance we're acting on
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140 | eb58f9b1 | Guido Trotter | @type instance: instance object
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141 | eb58f9b1 | Guido Trotter | @param seq: nic sequence number
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142 | eb58f9b1 | Guido Trotter | @type seq: int
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143 | eb58f9b1 | Guido Trotter | @param nic: nic we're acting on
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144 | eb58f9b1 | Guido Trotter | @type nic: nic object
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145 | eb58f9b1 | Guido Trotter | @return: netscript file name
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146 | eb58f9b1 | Guido Trotter | @rtype: string
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147 | eb58f9b1 | Guido Trotter |
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148 | eb58f9b1 | Guido Trotter | """
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149 | eb58f9b1 | Guido Trotter | script = StringIO() |
150 | eb58f9b1 | Guido Trotter | script.write("#!/bin/sh\n")
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151 | eb58f9b1 | Guido Trotter | script.write("# this is autogenerated by Ganeti, please do not edit\n#\n")
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152 | eb58f9b1 | Guido Trotter | script.write("export INSTANCE=%s\n" % instance.name)
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153 | eb58f9b1 | Guido Trotter | script.write("export MAC=%s\n" % nic.mac)
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154 | bef9c750 | Guido Trotter | if nic.ip:
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155 | bef9c750 | Guido Trotter | script.write("export IP=%s\n" % nic.ip)
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156 | bef9c750 | Guido Trotter | script.write("export MODE=%s\n" % nic.nicparams[constants.NIC_MODE])
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157 | bef9c750 | Guido Trotter | if nic.nicparams[constants.NIC_LINK]:
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158 | bef9c750 | Guido Trotter | script.write("export LINK=%s\n" % nic.nicparams[constants.NIC_LINK])
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159 | bef9c750 | Guido Trotter | if nic.nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
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160 | bef9c750 | Guido Trotter | script.write("export BRIDGE=%s\n" % nic.nicparams[constants.NIC_LINK])
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161 | eb58f9b1 | Guido Trotter | script.write("export INTERFACE=$1\n")
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162 | eb58f9b1 | Guido Trotter | # TODO: make this configurable at ./configure time
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163 | 5420ffc9 | Guido Trotter | script.write("if [ -x '%s' ]; then\n" % self._KVM_NETWORK_SCRIPT) |
164 | eb58f9b1 | Guido Trotter | script.write(" # Execute the user-specific vif file\n")
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165 | 5420ffc9 | Guido Trotter | script.write(" %s\n" % self._KVM_NETWORK_SCRIPT) |
166 | eb58f9b1 | Guido Trotter | script.write("else\n")
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167 | eb58f9b1 | Guido Trotter | script.write(" /sbin/ifconfig $INTERFACE 0.0.0.0 up\n")
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168 | bef9c750 | Guido Trotter | if nic.nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
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169 | bef9c750 | Guido Trotter | script.write(" # Connect the interface to the bridge\n")
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170 | bef9c750 | Guido Trotter | script.write(" /usr/sbin/brctl addif $BRIDGE $INTERFACE\n")
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171 | bef9c750 | Guido Trotter | elif nic.nicparams[constants.NIC_MODE] == constants.NIC_MODE_ROUTED:
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172 | bef9c750 | Guido Trotter | script.write(" # Route traffic targeted at the IP to the interface\n")
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173 | 7c60f7a2 | Guido Trotter | if nic.nicparams[constants.NIC_LINK]:
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174 | 2c5afffb | Guido Trotter | script.write(" while /sbin/ip rule del dev $INTERFACE; do :; done\n")
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175 | 2c5afffb | Guido Trotter | script.write(" /sbin/ip rule add dev $INTERFACE table $LINK\n")
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176 | 8866ec86 | Guido Trotter | script.write(" /sbin/ip route replace $IP table $LINK proto static"
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177 | d63218ce | Guido Trotter | " dev $INTERFACE\n")
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178 | 7c60f7a2 | Guido Trotter | else:
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179 | 8866ec86 | Guido Trotter | script.write(" /sbin/ip route replace $IP proto static"
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180 | 8866ec86 | Guido Trotter | " dev $INTERFACE\n")
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181 | e014f1d0 | Guido Trotter | interface_v4_conf = "/proc/sys/net/ipv4/conf/$INTERFACE"
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182 | e014f1d0 | Guido Trotter | interface_v6_conf = "/proc/sys/net/ipv6/conf/$INTERFACE"
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183 | e014f1d0 | Guido Trotter | script.write(" if [ -d %s ]; then\n" % interface_v4_conf)
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184 | e014f1d0 | Guido Trotter | script.write(" echo 1 > %s/proxy_arp\n" % interface_v4_conf)
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185 | e014f1d0 | Guido Trotter | script.write(" echo 1 > %s/forwarding\n" % interface_v4_conf)
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186 | e014f1d0 | Guido Trotter | script.write(" fi\n")
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187 | e014f1d0 | Guido Trotter | script.write(" if [ -d %s ]; then\n" % interface_v6_conf)
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188 | e014f1d0 | Guido Trotter | script.write(" echo 1 > %s/proxy_ndp\n" % interface_v6_conf)
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189 | e014f1d0 | Guido Trotter | script.write(" echo 1 > %s/forwarding\n" % interface_v6_conf)
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190 | e014f1d0 | Guido Trotter | script.write(" fi\n")
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191 | eb58f9b1 | Guido Trotter | script.write("fi\n\n")
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192 | 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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193 | eb58f9b1 | Guido Trotter | # mounted noexec sometimes, so we'll have to find another place.
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194 | eb58f9b1 | Guido Trotter | (tmpfd, tmpfile_name) = tempfile.mkstemp() |
195 | eb58f9b1 | Guido Trotter | tmpfile = os.fdopen(tmpfd, 'w')
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196 | d73ef63f | Michael Hanselmann | try:
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197 | d73ef63f | Michael Hanselmann | tmpfile.write(script.getvalue()) |
198 | d73ef63f | Michael Hanselmann | finally:
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199 | d73ef63f | Michael Hanselmann | tmpfile.close() |
200 | eb58f9b1 | Guido Trotter | os.chmod(tmpfile_name, 0755)
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201 | eb58f9b1 | Guido Trotter | return tmpfile_name
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202 | eb58f9b1 | Guido Trotter | |
203 | eb58f9b1 | Guido Trotter | def ListInstances(self): |
204 | eb58f9b1 | Guido Trotter | """Get the list of running instances.
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205 | eb58f9b1 | Guido Trotter |
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206 | c41eea6e | Iustin Pop | We can do this by listing our live instances directory and
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207 | c41eea6e | Iustin Pop | checking whether the associated kvm process is still alive.
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208 | eb58f9b1 | Guido Trotter |
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209 | eb58f9b1 | Guido Trotter | """
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210 | eb58f9b1 | Guido Trotter | result = [] |
211 | eb58f9b1 | Guido Trotter | for name in os.listdir(self._PIDS_DIR): |
212 | 08137f9e | Iustin Pop | filename = "%s/%s" % (self._PIDS_DIR, name) |
213 | 08137f9e | Iustin Pop | if utils.IsProcessAlive(utils.ReadPidFile(filename)):
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214 | eb58f9b1 | Guido Trotter | result.append(name) |
215 | eb58f9b1 | Guido Trotter | return result
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216 | eb58f9b1 | Guido Trotter | |
217 | eb58f9b1 | Guido Trotter | def GetInstanceInfo(self, instance_name): |
218 | eb58f9b1 | Guido Trotter | """Get instance properties.
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219 | eb58f9b1 | Guido Trotter |
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220 | c41eea6e | Iustin Pop | @param instance_name: the instance name
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221 | c41eea6e | Iustin Pop |
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222 | c41eea6e | Iustin Pop | @return: tuple (name, id, memory, vcpus, stat, times)
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223 | eb58f9b1 | Guido Trotter |
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224 | eb58f9b1 | Guido Trotter | """
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225 | 1f8b3a27 | Guido Trotter | pidfile, pid, alive = self._InstancePidAlive(instance_name)
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226 | 1f8b3a27 | Guido Trotter | if not alive: |
227 | eb58f9b1 | Guido Trotter | return None |
228 | eb58f9b1 | Guido Trotter | |
229 | eb58f9b1 | Guido Trotter | cmdline_file = "/proc/%s/cmdline" % pid
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230 | eb58f9b1 | Guido Trotter | try:
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231 | 1e37ad45 | Michael Hanselmann | cmdline = utils.ReadFile(cmdline_file) |
232 | 90c024f6 | Guido Trotter | except EnvironmentError, err: |
233 | eb58f9b1 | Guido Trotter | raise errors.HypervisorError("Failed to list instance %s: %s" % |
234 | eb58f9b1 | Guido Trotter | (instance_name, err)) |
235 | eb58f9b1 | Guido Trotter | |
236 | eb58f9b1 | Guido Trotter | memory = 0
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237 | eb58f9b1 | Guido Trotter | vcpus = 0
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238 | eb58f9b1 | Guido Trotter | stat = "---b-"
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239 | eb58f9b1 | Guido Trotter | times = "0"
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240 | eb58f9b1 | Guido Trotter | |
241 | eb58f9b1 | Guido Trotter | arg_list = cmdline.split('\x00')
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242 | eb58f9b1 | Guido Trotter | while arg_list:
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243 | eb58f9b1 | Guido Trotter | arg = arg_list.pop(0)
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244 | eb58f9b1 | Guido Trotter | if arg == '-m': |
245 | 2a7e887b | Guido Trotter | memory = int(arg_list.pop(0)) |
246 | eb58f9b1 | Guido Trotter | elif arg == '-smp': |
247 | 2a7e887b | Guido Trotter | vcpus = int(arg_list.pop(0)) |
248 | eb58f9b1 | Guido Trotter | |
249 | eb58f9b1 | Guido Trotter | return (instance_name, pid, memory, vcpus, stat, times)
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250 | eb58f9b1 | Guido Trotter | |
251 | eb58f9b1 | Guido Trotter | def GetAllInstancesInfo(self): |
252 | eb58f9b1 | Guido Trotter | """Get properties of all instances.
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253 | eb58f9b1 | Guido Trotter |
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254 | c41eea6e | Iustin Pop | @return: list of tuples (name, id, memory, vcpus, stat, times)
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255 | c41eea6e | Iustin Pop |
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256 | eb58f9b1 | Guido Trotter | """
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257 | eb58f9b1 | Guido Trotter | data = [] |
258 | eb58f9b1 | Guido Trotter | for name in os.listdir(self._PIDS_DIR): |
259 | 08137f9e | Iustin Pop | filename = "%s/%s" % (self._PIDS_DIR, name) |
260 | 08137f9e | Iustin Pop | if utils.IsProcessAlive(utils.ReadPidFile(filename)):
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261 | 00ad5362 | Guido Trotter | try:
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262 | 00ad5362 | Guido Trotter | info = self.GetInstanceInfo(name)
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263 | 00ad5362 | Guido Trotter | except errors.HypervisorError, err:
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264 | 00ad5362 | Guido Trotter | continue
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265 | 00ad5362 | Guido Trotter | if info:
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266 | 00ad5362 | Guido Trotter | data.append(info) |
267 | eb58f9b1 | Guido Trotter | |
268 | eb58f9b1 | Guido Trotter | return data
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269 | eb58f9b1 | Guido Trotter | |
270 | 07813a9e | Iustin Pop | def _GenerateKVMRuntime(self, instance, block_devices): |
271 | ee5f20b0 | Guido Trotter | """Generate KVM information to start an instance.
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272 | eb58f9b1 | Guido Trotter |
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273 | eb58f9b1 | Guido Trotter | """
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274 | 1f8b3a27 | Guido Trotter | pidfile, pid, alive = self._InstancePidAlive(instance.name)
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275 | eb58f9b1 | Guido Trotter | kvm = constants.KVM_PATH |
276 | eb58f9b1 | Guido Trotter | kvm_cmd = [kvm] |
277 | 8b3fd458 | Iustin Pop | kvm_cmd.extend(['-m', instance.beparams[constants.BE_MEMORY]])
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278 | 8b3fd458 | Iustin Pop | kvm_cmd.extend(['-smp', instance.beparams[constants.BE_VCPUS]])
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279 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-pidfile', pidfile])
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280 | eb58f9b1 | Guido Trotter | # used just by the vnc server, if enabled
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281 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-name', instance.name])
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282 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-daemonize'])
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283 | 6b5605e8 | Iustin Pop | if not instance.hvparams[constants.HV_ACPI]: |
284 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-no-acpi'])
|
285 | eb58f9b1 | Guido Trotter | |
286 | a985b417 | Iustin Pop | hvp = instance.hvparams |
287 | 835528af | Iustin Pop | boot_disk = hvp[constants.HV_BOOT_ORDER] == constants.HT_BO_DISK |
288 | 835528af | Iustin Pop | boot_cdrom = hvp[constants.HV_BOOT_ORDER] == constants.HT_BO_CDROM |
289 | 835528af | Iustin Pop | boot_network = hvp[constants.HV_BOOT_ORDER] == constants.HT_BO_NETWORK |
290 | 8745c3d7 | Guido Trotter | |
291 | 8745c3d7 | Guido Trotter | if boot_network:
|
292 | 8745c3d7 | Guido Trotter | kvm_cmd.extend(['-boot', 'n']) |
293 | 1213604d | Guido Trotter | |
294 | a985b417 | Iustin Pop | disk_type = hvp[constants.HV_DISK_TYPE] |
295 | 1213604d | Guido Trotter | if disk_type == constants.HT_DISK_PARAVIRTUAL:
|
296 | 1213604d | Guido Trotter | if_val = ',if=virtio'
|
297 | 1213604d | Guido Trotter | else:
|
298 | 1213604d | Guido Trotter | if_val = ',if=%s' % disk_type
|
299 | 069cfbf1 | Iustin Pop | for cfdev, dev_path in block_devices: |
300 | d34b16d7 | Iustin Pop | if cfdev.mode != constants.DISK_RDWR:
|
301 | d34b16d7 | Iustin Pop | raise errors.HypervisorError("Instance has read-only disks which" |
302 | d34b16d7 | Iustin Pop | " are not supported by KVM")
|
303 | eb58f9b1 | Guido Trotter | # TODO: handle FD_LOOP and FD_BLKTAP (?)
|
304 | 66d5dbef | Guido Trotter | if boot_disk:
|
305 | 9dd363eb | Guido Trotter | kvm_cmd.extend(['-boot', 'c']) |
306 | eb58f9b1 | Guido Trotter | boot_val = ',boot=on'
|
307 | 8745c3d7 | Guido Trotter | # We only boot from the first disk
|
308 | 66d5dbef | Guido Trotter | boot_disk = False
|
309 | eb58f9b1 | Guido Trotter | else:
|
310 | eb58f9b1 | Guido Trotter | boot_val = ''
|
311 | eb58f9b1 | Guido Trotter | |
312 | 069cfbf1 | Iustin Pop | drive_val = 'file=%s,format=raw%s%s' % (dev_path, if_val, boot_val)
|
313 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-drive', drive_val])
|
314 | eb58f9b1 | Guido Trotter | |
315 | a985b417 | Iustin Pop | iso_image = hvp[constants.HV_CDROM_IMAGE_PATH] |
316 | 66d5dbef | Guido Trotter | if iso_image:
|
317 | 9dd363eb | Guido Trotter | options = ',format=raw,media=cdrom'
|
318 | 66d5dbef | Guido Trotter | if boot_cdrom:
|
319 | 9dd363eb | Guido Trotter | kvm_cmd.extend(['-boot', 'd']) |
320 | 66d5dbef | Guido Trotter | options = '%s,boot=on' % options
|
321 | 9dd363eb | Guido Trotter | else:
|
322 | 9dd363eb | Guido Trotter | options = '%s,if=virtio' % options
|
323 | 66d5dbef | Guido Trotter | drive_val = 'file=%s%s' % (iso_image, options)
|
324 | 66d5dbef | Guido Trotter | kvm_cmd.extend(['-drive', drive_val])
|
325 | 66d5dbef | Guido Trotter | |
326 | a985b417 | Iustin Pop | kernel_path = hvp[constants.HV_KERNEL_PATH] |
327 | df5ab9f0 | Guido Trotter | if kernel_path:
|
328 | df5ab9f0 | Guido Trotter | kvm_cmd.extend(['-kernel', kernel_path])
|
329 | a985b417 | Iustin Pop | initrd_path = hvp[constants.HV_INITRD_PATH] |
330 | df5ab9f0 | Guido Trotter | if initrd_path:
|
331 | df5ab9f0 | Guido Trotter | kvm_cmd.extend(['-initrd', initrd_path])
|
332 | 07813a9e | Iustin Pop | root_append = ['root=%s' % hvp[constants.HV_ROOT_PATH],
|
333 | 07813a9e | Iustin Pop | hvp[constants.HV_KERNEL_ARGS]] |
334 | 07813a9e | Iustin Pop | if hvp[constants.HV_SERIAL_CONSOLE]:
|
335 | 07813a9e | Iustin Pop | root_append.append('console=ttyS0,38400')
|
336 | 07813a9e | Iustin Pop | kvm_cmd.extend(['-append', ' '.join(root_append)]) |
337 | eb58f9b1 | Guido Trotter | |
338 | a985b417 | Iustin Pop | mouse_type = hvp[constants.HV_USB_MOUSE] |
339 | 11344a50 | Guido Trotter | if mouse_type:
|
340 | 11344a50 | Guido Trotter | kvm_cmd.extend(['-usb'])
|
341 | 11344a50 | Guido Trotter | kvm_cmd.extend(['-usbdevice', mouse_type])
|
342 | 11344a50 | Guido Trotter | |
343 | a985b417 | Iustin Pop | vnc_bind_address = hvp[constants.HV_VNC_BIND_ADDRESS] |
344 | 8470c8db | Guido Trotter | if vnc_bind_address:
|
345 | 8447f52b | Guido Trotter | if utils.IsValidIP(vnc_bind_address):
|
346 | 377d74c9 | Guido Trotter | if instance.network_port > constants.VNC_BASE_PORT:
|
347 | 377d74c9 | Guido Trotter | display = instance.network_port - constants.VNC_BASE_PORT |
348 | 8447f52b | Guido Trotter | if vnc_bind_address == '0.0.0.0': |
349 | 8447f52b | Guido Trotter | vnc_arg = ':%d' % (display)
|
350 | 8447f52b | Guido Trotter | else:
|
351 | 19498d6c | Guido Trotter | vnc_arg = '%s:%d' % (vnc_bind_address, display)
|
352 | 8470c8db | Guido Trotter | else:
|
353 | 8447f52b | Guido Trotter | logging.error("Network port is not a valid VNC display (%d < %d)."
|
354 | 8447f52b | Guido Trotter | " Not starting VNC" %
|
355 | 8447f52b | Guido Trotter | (instance.network_port, |
356 | 377d74c9 | Guido Trotter | constants.VNC_BASE_PORT)) |
357 | 8447f52b | Guido Trotter | vnc_arg = 'none'
|
358 | 8b2d1013 | Guido Trotter | |
359 | 8b2d1013 | Guido Trotter | # Only allow tls and other option when not binding to a file, for now.
|
360 | 8b2d1013 | Guido Trotter | # kvm/qemu gets confused otherwise about the filename to use.
|
361 | 8b2d1013 | Guido Trotter | vnc_append = ''
|
362 | a985b417 | Iustin Pop | if hvp[constants.HV_VNC_TLS]:
|
363 | 8b2d1013 | Guido Trotter | vnc_append = '%s,tls' % vnc_append
|
364 | a985b417 | Iustin Pop | if hvp[constants.HV_VNC_X509_VERIFY]:
|
365 | 8b2d1013 | Guido Trotter | vnc_append = '%s,x509verify=%s' % (vnc_append,
|
366 | a985b417 | Iustin Pop | hvp[constants.HV_VNC_X509]) |
367 | a985b417 | Iustin Pop | elif hvp[constants.HV_VNC_X509]:
|
368 | 8b2d1013 | Guido Trotter | vnc_append = '%s,x509=%s' % (vnc_append,
|
369 | a985b417 | Iustin Pop | hvp[constants.HV_VNC_X509]) |
370 | 6e6bb8d5 | Guido Trotter | if hvp[constants.HV_VNC_PASSWORD_FILE]:
|
371 | 6e6bb8d5 | Guido Trotter | vnc_append = '%s,password' % vnc_append
|
372 | 6e6bb8d5 | Guido Trotter | |
373 | 8b2d1013 | Guido Trotter | vnc_arg = '%s%s' % (vnc_arg, vnc_append)
|
374 | 8b2d1013 | Guido Trotter | |
375 | 8470c8db | Guido Trotter | else:
|
376 | 8b2d1013 | Guido Trotter | vnc_arg = 'unix:%s/%s.vnc' % (vnc_bind_address, instance.name)
|
377 | 8b2d1013 | Guido Trotter | |
378 | 8447f52b | Guido Trotter | kvm_cmd.extend(['-vnc', vnc_arg])
|
379 | 8470c8db | Guido Trotter | else:
|
380 | 8470c8db | Guido Trotter | kvm_cmd.extend(['-nographic'])
|
381 | 8470c8db | Guido Trotter | |
382 | 69b99987 | Michael Hanselmann | monitor_dev = ("unix:%s,server,nowait" %
|
383 | 69b99987 | Michael Hanselmann | self._InstanceMonitor(instance.name))
|
384 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-monitor', monitor_dev])
|
385 | a985b417 | Iustin Pop | if hvp[constants.HV_SERIAL_CONSOLE]:
|
386 | a985b417 | Iustin Pop | serial_dev = ('unix:%s,server,nowait' %
|
387 | a985b417 | Iustin Pop | self._InstanceSerial(instance.name))
|
388 | a2faf9ee | Guido Trotter | kvm_cmd.extend(['-serial', serial_dev])
|
389 | a2faf9ee | Guido Trotter | else:
|
390 | a2faf9ee | Guido Trotter | kvm_cmd.extend(['-serial', 'none']) |
391 | eb58f9b1 | Guido Trotter | |
392 | ee5f20b0 | Guido Trotter | # Save the current instance nics, but defer their expansion as parameters,
|
393 | ee5f20b0 | Guido Trotter | # as we'll need to generate executable temp files for them.
|
394 | ee5f20b0 | Guido Trotter | kvm_nics = instance.nics |
395 | a985b417 | Iustin Pop | hvparams = hvp |
396 | ee5f20b0 | Guido Trotter | |
397 | c2672466 | Guido Trotter | return (kvm_cmd, kvm_nics, hvparams)
|
398 | ee5f20b0 | Guido Trotter | |
399 | 38e250ba | Guido Trotter | def _WriteKVMRuntime(self, instance_name, data): |
400 | 38e250ba | Guido Trotter | """Write an instance's KVM runtime
|
401 | 38e250ba | Guido Trotter |
|
402 | 38e250ba | Guido Trotter | """
|
403 | 38e250ba | Guido Trotter | try:
|
404 | 38e250ba | Guido Trotter | utils.WriteFile(self._InstanceKVMRuntime(instance_name),
|
405 | 38e250ba | Guido Trotter | data=data) |
406 | 90c024f6 | Guido Trotter | except EnvironmentError, err: |
407 | 38e250ba | Guido Trotter | raise errors.HypervisorError("Failed to save KVM runtime file: %s" % err) |
408 | 38e250ba | Guido Trotter | |
409 | 38e250ba | Guido Trotter | def _ReadKVMRuntime(self, instance_name): |
410 | 38e250ba | Guido Trotter | """Read an instance's KVM runtime
|
411 | 38e250ba | Guido Trotter |
|
412 | 38e250ba | Guido Trotter | """
|
413 | 38e250ba | Guido Trotter | try:
|
414 | 38e250ba | Guido Trotter | file_content = utils.ReadFile(self._InstanceKVMRuntime(instance_name))
|
415 | 90c024f6 | Guido Trotter | except EnvironmentError, err: |
416 | 38e250ba | Guido Trotter | raise errors.HypervisorError("Failed to load KVM runtime file: %s" % err) |
417 | 38e250ba | Guido Trotter | return file_content
|
418 | 38e250ba | Guido Trotter | |
419 | 38e250ba | Guido Trotter | def _SaveKVMRuntime(self, instance, kvm_runtime): |
420 | 38e250ba | Guido Trotter | """Save an instance's KVM runtime
|
421 | 38e250ba | Guido Trotter |
|
422 | 38e250ba | Guido Trotter | """
|
423 | c2672466 | Guido Trotter | kvm_cmd, kvm_nics, hvparams = kvm_runtime |
424 | 38e250ba | Guido Trotter | serialized_nics = [nic.ToDict() for nic in kvm_nics] |
425 | c2672466 | Guido Trotter | serialized_form = serializer.Dump((kvm_cmd, serialized_nics, hvparams)) |
426 | 38e250ba | Guido Trotter | self._WriteKVMRuntime(instance.name, serialized_form)
|
427 | 38e250ba | Guido Trotter | |
428 | 30e42c4e | Guido Trotter | def _LoadKVMRuntime(self, instance, serialized_runtime=None): |
429 | 38e250ba | Guido Trotter | """Load an instance's KVM runtime
|
430 | 38e250ba | Guido Trotter |
|
431 | 38e250ba | Guido Trotter | """
|
432 | 30e42c4e | Guido Trotter | if not serialized_runtime: |
433 | 30e42c4e | Guido Trotter | serialized_runtime = self._ReadKVMRuntime(instance.name)
|
434 | 30e42c4e | Guido Trotter | loaded_runtime = serializer.Load(serialized_runtime) |
435 | c2672466 | Guido Trotter | kvm_cmd, serialized_nics, hvparams = loaded_runtime |
436 | 38e250ba | Guido Trotter | kvm_nics = [objects.NIC.FromDict(snic) for snic in serialized_nics] |
437 | c2672466 | Guido Trotter | return (kvm_cmd, kvm_nics, hvparams)
|
438 | 38e250ba | Guido Trotter | |
439 | 30e42c4e | Guido Trotter | def _ExecuteKVMRuntime(self, instance, kvm_runtime, incoming=None): |
440 | ee5f20b0 | Guido Trotter | """Execute a KVM cmd, after completing it with some last minute data
|
441 | ee5f20b0 | Guido Trotter |
|
442 | 30e42c4e | Guido Trotter | @type incoming: tuple of strings
|
443 | 30e42c4e | Guido Trotter | @param incoming: (target_host_ip, port)
|
444 | 30e42c4e | Guido Trotter |
|
445 | ee5f20b0 | Guido Trotter | """
|
446 | 1f8b3a27 | Guido Trotter | pidfile, pid, alive = self._InstancePidAlive(instance.name)
|
447 | 6e6bb8d5 | Guido Trotter | hvp = instance.hvparams |
448 | 1f8b3a27 | Guido Trotter | if alive:
|
449 | ee5f20b0 | Guido Trotter | raise errors.HypervisorError("Failed to start instance %s: %s" % |
450 | ee5f20b0 | Guido Trotter | (instance.name, "already running"))
|
451 | ee5f20b0 | Guido Trotter | |
452 | ee5f20b0 | Guido Trotter | temp_files = [] |
453 | ee5f20b0 | Guido Trotter | |
454 | c2672466 | Guido Trotter | kvm_cmd, kvm_nics, hvparams = kvm_runtime |
455 | ee5f20b0 | Guido Trotter | |
456 | ee5f20b0 | Guido Trotter | if not kvm_nics: |
457 | ee5f20b0 | Guido Trotter | kvm_cmd.extend(['-net', 'none']) |
458 | ee5f20b0 | Guido Trotter | else:
|
459 | 37f88dc6 | Guido Trotter | nic_type = hvparams[constants.HV_NIC_TYPE] |
460 | 37f88dc6 | Guido Trotter | if nic_type == constants.HT_NIC_PARAVIRTUAL:
|
461 | 37f88dc6 | Guido Trotter | nic_model = "model=virtio"
|
462 | 37f88dc6 | Guido Trotter | else:
|
463 | 37f88dc6 | Guido Trotter | nic_model = "model=%s" % nic_type
|
464 | 37f88dc6 | Guido Trotter | |
465 | ee5f20b0 | Guido Trotter | for nic_seq, nic in enumerate(kvm_nics): |
466 | 37f88dc6 | Guido Trotter | nic_val = "nic,macaddr=%s,%s" % (nic.mac, nic_model)
|
467 | ee5f20b0 | Guido Trotter | script = self._WriteNetScript(instance, nic_seq, nic)
|
468 | ee5f20b0 | Guido Trotter | kvm_cmd.extend(['-net', nic_val])
|
469 | ee5f20b0 | Guido Trotter | kvm_cmd.extend(['-net', 'tap,script=%s' % script]) |
470 | ee5f20b0 | Guido Trotter | temp_files.append(script) |
471 | ee5f20b0 | Guido Trotter | |
472 | 30e42c4e | Guido Trotter | if incoming:
|
473 | 30e42c4e | Guido Trotter | target, port = incoming |
474 | 30e42c4e | Guido Trotter | kvm_cmd.extend(['-incoming', 'tcp:%s:%s' % (target, port)]) |
475 | 30e42c4e | Guido Trotter | |
476 | 6e6bb8d5 | Guido Trotter | vnc_pwd_file = hvp[constants.HV_VNC_PASSWORD_FILE] |
477 | 6e6bb8d5 | Guido Trotter | vnc_pwd = None
|
478 | 6e6bb8d5 | Guido Trotter | if vnc_pwd_file:
|
479 | 6e6bb8d5 | Guido Trotter | try:
|
480 | 6e6bb8d5 | Guido Trotter | vnc_pwd = utils.ReadFile(vnc_pwd_file) |
481 | 6e6bb8d5 | Guido Trotter | except EnvironmentError, err: |
482 | 6e6bb8d5 | Guido Trotter | raise errors.HypervisorError("Failed to open VNC password file %s: %s" |
483 | 6e6bb8d5 | Guido Trotter | % (vnc_pwd_file, err)) |
484 | 6e6bb8d5 | Guido Trotter | |
485 | eb58f9b1 | Guido Trotter | result = utils.RunCmd(kvm_cmd) |
486 | eb58f9b1 | Guido Trotter | if result.failed:
|
487 | eb58f9b1 | Guido Trotter | raise errors.HypervisorError("Failed to start instance %s: %s (%s)" % |
488 | eb58f9b1 | Guido Trotter | (instance.name, result.fail_reason, |
489 | eb58f9b1 | Guido Trotter | result.output)) |
490 | eb58f9b1 | Guido Trotter | |
491 | eb58f9b1 | Guido Trotter | if not utils.IsProcessAlive(utils.ReadPidFile(pidfile)): |
492 | eb58f9b1 | Guido Trotter | raise errors.HypervisorError("Failed to start instance %s: %s" % |
493 | eb58f9b1 | Guido Trotter | (instance.name)) |
494 | eb58f9b1 | Guido Trotter | |
495 | 6e6bb8d5 | Guido Trotter | if vnc_pwd:
|
496 | 6e6bb8d5 | Guido Trotter | change_cmd = 'change vnc password %s' % vnc_pwd
|
497 | 6e6bb8d5 | Guido Trotter | self._CallMonitorCommand(instance.name, change_cmd)
|
498 | 6e6bb8d5 | Guido Trotter | |
499 | 08137f9e | Iustin Pop | for filename in temp_files: |
500 | 08137f9e | Iustin Pop | utils.RemoveFile(filename) |
501 | eb58f9b1 | Guido Trotter | |
502 | 07813a9e | Iustin Pop | def StartInstance(self, instance, block_devices): |
503 | ee5f20b0 | Guido Trotter | """Start an instance.
|
504 | ee5f20b0 | Guido Trotter |
|
505 | ee5f20b0 | Guido Trotter | """
|
506 | 1f8b3a27 | Guido Trotter | pidfile, pid, alive = self._InstancePidAlive(instance.name)
|
507 | 1f8b3a27 | Guido Trotter | if alive:
|
508 | ee5f20b0 | Guido Trotter | raise errors.HypervisorError("Failed to start instance %s: %s" % |
509 | ee5f20b0 | Guido Trotter | (instance.name, "already running"))
|
510 | ee5f20b0 | Guido Trotter | |
511 | 07813a9e | Iustin Pop | kvm_runtime = self._GenerateKVMRuntime(instance, block_devices)
|
512 | 38e250ba | Guido Trotter | self._SaveKVMRuntime(instance, kvm_runtime)
|
513 | ee5f20b0 | Guido Trotter | self._ExecuteKVMRuntime(instance, kvm_runtime)
|
514 | ee5f20b0 | Guido Trotter | |
515 | 6567aff3 | Guido Trotter | def _CallMonitorCommand(self, instance_name, command): |
516 | 6567aff3 | Guido Trotter | """Invoke a command on the instance monitor.
|
517 | 6567aff3 | Guido Trotter |
|
518 | 6567aff3 | Guido Trotter | """
|
519 | 6567aff3 | Guido Trotter | socat = ("echo %s | %s STDIO UNIX-CONNECT:%s" %
|
520 | 6567aff3 | Guido Trotter | (utils.ShellQuote(command), |
521 | 6567aff3 | Guido Trotter | constants.SOCAT_PATH, |
522 | 6567aff3 | Guido Trotter | utils.ShellQuote(self._InstanceMonitor(instance_name))))
|
523 | 6567aff3 | Guido Trotter | result = utils.RunCmd(socat) |
524 | 6567aff3 | Guido Trotter | if result.failed:
|
525 | 6567aff3 | Guido Trotter | msg = ("Failed to send command '%s' to instance %s."
|
526 | 6567aff3 | Guido Trotter | " output: %s, error: %s, fail_reason: %s" %
|
527 | 9798fcae | Guido Trotter | (command, instance_name, |
528 | 9798fcae | Guido Trotter | result.stdout, result.stderr, result.fail_reason)) |
529 | 6567aff3 | Guido Trotter | raise errors.HypervisorError(msg)
|
530 | 6567aff3 | Guido Trotter | |
531 | 6567aff3 | Guido Trotter | return result
|
532 | 6567aff3 | Guido Trotter | |
533 | 07b49e41 | Guido Trotter | def StopInstance(self, instance, force=False, retry=False): |
534 | eb58f9b1 | Guido Trotter | """Stop an instance.
|
535 | eb58f9b1 | Guido Trotter |
|
536 | eb58f9b1 | Guido Trotter | """
|
537 | 1f8b3a27 | Guido Trotter | pidfile, pid, alive = self._InstancePidAlive(instance.name)
|
538 | 1f8b3a27 | Guido Trotter | if pid > 0 and alive: |
539 | 6b5605e8 | Iustin Pop | if force or not instance.hvparams[constants.HV_ACPI]: |
540 | eb58f9b1 | Guido Trotter | utils.KillProcess(pid) |
541 | eb58f9b1 | Guido Trotter | else:
|
542 | 4ad45119 | Guido Trotter | self._CallMonitorCommand(instance.name, 'system_powerdown') |
543 | eb58f9b1 | Guido Trotter | |
544 | eb58f9b1 | Guido Trotter | if not utils.IsProcessAlive(pid): |
545 | 7e66c35b | Guido Trotter | self._RemoveInstanceRuntimeFiles(pidfile, instance.name)
|
546 | 6567aff3 | Guido Trotter | return True |
547 | 6567aff3 | Guido Trotter | else:
|
548 | 6567aff3 | Guido Trotter | return False |
549 | eb58f9b1 | Guido Trotter | |
550 | eb58f9b1 | Guido Trotter | def RebootInstance(self, instance): |
551 | eb58f9b1 | Guido Trotter | """Reboot an instance.
|
552 | eb58f9b1 | Guido Trotter |
|
553 | eb58f9b1 | Guido Trotter | """
|
554 | eb58f9b1 | Guido Trotter | # For some reason if we do a 'send-key ctrl-alt-delete' to the control
|
555 | eb58f9b1 | Guido Trotter | # socket the instance will stop, but now power up again. So we'll resort
|
556 | eb58f9b1 | Guido Trotter | # to shutdown and restart.
|
557 | 1f8b3a27 | Guido Trotter | pidfile, pid, alive = self._InstancePidAlive(instance.name)
|
558 | 1f8b3a27 | Guido Trotter | if not alive: |
559 | 1f8b3a27 | Guido Trotter | raise errors.HypervisorError("Failed to reboot instance %s: not running" % |
560 | 1f8b3a27 | Guido Trotter | (instance.name)) |
561 | f02881e0 | Guido Trotter | # StopInstance will delete the saved KVM runtime so:
|
562 | f02881e0 | Guido Trotter | # ...first load it...
|
563 | f02881e0 | Guido Trotter | kvm_runtime = self._LoadKVMRuntime(instance)
|
564 | f02881e0 | Guido Trotter | # ...now we can safely call StopInstance...
|
565 | f02881e0 | Guido Trotter | if not self.StopInstance(instance): |
566 | f02881e0 | Guido Trotter | self.StopInstance(instance, force=True) |
567 | f02881e0 | Guido Trotter | # ...and finally we can save it again, and execute it...
|
568 | f02881e0 | Guido Trotter | self._SaveKVMRuntime(instance, kvm_runtime)
|
569 | f02881e0 | Guido Trotter | self._ExecuteKVMRuntime(instance, kvm_runtime)
|
570 | eb58f9b1 | Guido Trotter | |
571 | 30e42c4e | Guido Trotter | def MigrationInfo(self, instance): |
572 | 30e42c4e | Guido Trotter | """Get instance information to perform a migration.
|
573 | 30e42c4e | Guido Trotter |
|
574 | 30e42c4e | Guido Trotter | @type instance: L{objects.Instance}
|
575 | 30e42c4e | Guido Trotter | @param instance: instance to be migrated
|
576 | 30e42c4e | Guido Trotter | @rtype: string
|
577 | 30e42c4e | Guido Trotter | @return: content of the KVM runtime file
|
578 | 30e42c4e | Guido Trotter |
|
579 | 30e42c4e | Guido Trotter | """
|
580 | 30e42c4e | Guido Trotter | return self._ReadKVMRuntime(instance.name) |
581 | 30e42c4e | Guido Trotter | |
582 | 30e42c4e | Guido Trotter | def AcceptInstance(self, instance, info, target): |
583 | 30e42c4e | Guido Trotter | """Prepare to accept an instance.
|
584 | 30e42c4e | Guido Trotter |
|
585 | 30e42c4e | Guido Trotter | @type instance: L{objects.Instance}
|
586 | 30e42c4e | Guido Trotter | @param instance: instance to be accepted
|
587 | 30e42c4e | Guido Trotter | @type info: string
|
588 | 30e42c4e | Guido Trotter | @param info: content of the KVM runtime file on the source node
|
589 | 30e42c4e | Guido Trotter | @type target: string
|
590 | 30e42c4e | Guido Trotter | @param target: target host (usually ip), on this node
|
591 | 30e42c4e | Guido Trotter |
|
592 | 30e42c4e | Guido Trotter | """
|
593 | 30e42c4e | Guido Trotter | kvm_runtime = self._LoadKVMRuntime(instance, serialized_runtime=info)
|
594 | 30e42c4e | Guido Trotter | incoming_address = (target, constants.KVM_MIGRATION_PORT) |
595 | 30e42c4e | Guido Trotter | self._ExecuteKVMRuntime(instance, kvm_runtime, incoming=incoming_address)
|
596 | 30e42c4e | Guido Trotter | |
597 | 30e42c4e | Guido Trotter | def FinalizeMigration(self, instance, info, success): |
598 | 30e42c4e | Guido Trotter | """Finalize an instance migration.
|
599 | 30e42c4e | Guido Trotter |
|
600 | 30e42c4e | Guido Trotter | Stop the incoming mode KVM.
|
601 | 30e42c4e | Guido Trotter |
|
602 | 30e42c4e | Guido Trotter | @type instance: L{objects.Instance}
|
603 | 30e42c4e | Guido Trotter | @param instance: instance whose migration is being aborted
|
604 | 30e42c4e | Guido Trotter |
|
605 | 30e42c4e | Guido Trotter | """
|
606 | 30e42c4e | Guido Trotter | if success:
|
607 | 30e42c4e | Guido Trotter | self._WriteKVMRuntime(instance.name, info)
|
608 | 30e42c4e | Guido Trotter | else:
|
609 | 30e42c4e | Guido Trotter | self.StopInstance(instance, force=True) |
610 | 30e42c4e | Guido Trotter | |
611 | 30e42c4e | Guido Trotter | def MigrateInstance(self, instance_name, target, live): |
612 | 30e42c4e | Guido Trotter | """Migrate an instance to a target node.
|
613 | 30e42c4e | Guido Trotter |
|
614 | 30e42c4e | Guido Trotter | The migration will not be attempted if the instance is not
|
615 | 30e42c4e | Guido Trotter | currently running.
|
616 | 30e42c4e | Guido Trotter |
|
617 | 30e42c4e | Guido Trotter | @type instance_name: string
|
618 | 30e42c4e | Guido Trotter | @param instance_name: name of the instance to be migrated
|
619 | 30e42c4e | Guido Trotter | @type target: string
|
620 | 30e42c4e | Guido Trotter | @param target: ip address of the target node
|
621 | 30e42c4e | Guido Trotter | @type live: boolean
|
622 | 30e42c4e | Guido Trotter | @param live: perform a live migration
|
623 | 30e42c4e | Guido Trotter |
|
624 | 30e42c4e | Guido Trotter | """
|
625 | 30e42c4e | Guido Trotter | pidfile, pid, alive = self._InstancePidAlive(instance_name)
|
626 | 30e42c4e | Guido Trotter | if not alive: |
627 | 30e42c4e | Guido Trotter | raise errors.HypervisorError("Instance not running, cannot migrate") |
628 | 30e42c4e | Guido Trotter | |
629 | 30e42c4e | Guido Trotter | if not live: |
630 | 30e42c4e | Guido Trotter | self._CallMonitorCommand(instance_name, 'stop') |
631 | 30e42c4e | Guido Trotter | |
632 | 30e42c4e | Guido Trotter | migrate_command = ('migrate -d tcp:%s:%s' %
|
633 | 30e42c4e | Guido Trotter | (target, constants.KVM_MIGRATION_PORT)) |
634 | 30e42c4e | Guido Trotter | self._CallMonitorCommand(instance_name, migrate_command)
|
635 | 30e42c4e | Guido Trotter | |
636 | 30e42c4e | Guido Trotter | info_command = 'info migrate'
|
637 | 30e42c4e | Guido Trotter | done = False
|
638 | 30e42c4e | Guido Trotter | while not done: |
639 | 30e42c4e | Guido Trotter | result = self._CallMonitorCommand(instance_name, info_command)
|
640 | 30e42c4e | Guido Trotter | match = self._MIGRATION_STATUS_RE.search(result.stdout)
|
641 | 30e42c4e | Guido Trotter | if not match: |
642 | 30e42c4e | Guido Trotter | raise errors.HypervisorError("Unknown 'info migrate' result: %s" % |
643 | 30e42c4e | Guido Trotter | result.stdout) |
644 | 30e42c4e | Guido Trotter | else:
|
645 | 30e42c4e | Guido Trotter | status = match.group(1)
|
646 | 30e42c4e | Guido Trotter | if status == 'completed': |
647 | 30e42c4e | Guido Trotter | done = True
|
648 | 30e42c4e | Guido Trotter | elif status == 'active': |
649 | 30e42c4e | Guido Trotter | time.sleep(2)
|
650 | c087266c | Guido Trotter | elif status == 'failed' or status == 'cancelled': |
651 | c087266c | Guido Trotter | if not live: |
652 | c087266c | Guido Trotter | self._CallMonitorCommand(instance_name, 'cont') |
653 | c087266c | Guido Trotter | raise errors.HypervisorError("Migration %s at the kvm level" % |
654 | c087266c | Guido Trotter | status) |
655 | 30e42c4e | Guido Trotter | else:
|
656 | 30e42c4e | Guido Trotter | logging.info("KVM: unknown migration status '%s'" % status)
|
657 | 30e42c4e | Guido Trotter | time.sleep(2)
|
658 | 30e42c4e | Guido Trotter | |
659 | 30e42c4e | Guido Trotter | utils.KillProcess(pid) |
660 | 7b381438 | Guido Trotter | self._RemoveInstanceRuntimeFiles(pidfile, instance_name)
|
661 | 30e42c4e | Guido Trotter | |
662 | eb58f9b1 | Guido Trotter | def GetNodeInfo(self): |
663 | eb58f9b1 | Guido Trotter | """Return information about the node.
|
664 | eb58f9b1 | Guido Trotter |
|
665 | 572e52bf | Iustin Pop | This is just a wrapper over the base GetLinuxNodeInfo method.
|
666 | 572e52bf | Iustin Pop |
|
667 | c41eea6e | Iustin Pop | @return: a dict with the following keys (values in MiB):
|
668 | c41eea6e | Iustin Pop | - memory_total: the total memory size on the node
|
669 | c41eea6e | Iustin Pop | - memory_free: the available memory on the node for instances
|
670 | c41eea6e | Iustin Pop | - memory_dom0: the memory used by the node itself, if available
|
671 | eb58f9b1 | Guido Trotter |
|
672 | eb58f9b1 | Guido Trotter | """
|
673 | 572e52bf | Iustin Pop | return self.GetLinuxNodeInfo() |
674 | eb58f9b1 | Guido Trotter | |
675 | 637ce7f9 | Guido Trotter | @classmethod
|
676 | 5431b2e4 | Guido Trotter | def GetShellCommandForConsole(cls, instance, hvparams, beparams): |
677 | eb58f9b1 | Guido Trotter | """Return a command for connecting to the console of an instance.
|
678 | eb58f9b1 | Guido Trotter |
|
679 | eb58f9b1 | Guido Trotter | """
|
680 | a2faf9ee | Guido Trotter | if hvparams[constants.HV_SERIAL_CONSOLE]:
|
681 | a2faf9ee | Guido Trotter | # FIXME: The socat shell is not perfect. In particular the way we start
|
682 | a2faf9ee | Guido Trotter | # it ctrl+c will close it, rather than being passed to the other end.
|
683 | a2faf9ee | Guido Trotter | # On the other hand if we pass the option 'raw' (or ignbrk=1) there
|
684 | a2faf9ee | Guido Trotter | # will be no way of exiting socat (except killing it from another shell)
|
685 | a2faf9ee | Guido Trotter | # and ctrl+c doesn't work anyway, printing ^C rather than being
|
686 | a2faf9ee | Guido Trotter | # interpreted by kvm. For now we'll leave it this way, which at least
|
687 | a2faf9ee | Guido Trotter | # allows a minimal interaction and changes on the machine.
|
688 | a2faf9ee | Guido Trotter | shell_command = ("%s STDIO,echo=0,icanon=0 UNIX-CONNECT:%s" %
|
689 | a2faf9ee | Guido Trotter | (constants.SOCAT_PATH, |
690 | a2faf9ee | Guido Trotter | utils.ShellQuote(cls._InstanceSerial(instance.name)))) |
691 | a2faf9ee | Guido Trotter | else:
|
692 | a2faf9ee | Guido Trotter | shell_command = "echo 'No serial shell for instance %s'" % instance.name
|
693 | 3be34f57 | Guido Trotter | |
694 | 3be34f57 | Guido Trotter | vnc_bind_address = hvparams[constants.HV_VNC_BIND_ADDRESS] |
695 | 3be34f57 | Guido Trotter | if vnc_bind_address:
|
696 | 377d74c9 | Guido Trotter | if instance.network_port > constants.VNC_BASE_PORT:
|
697 | 377d74c9 | Guido Trotter | display = instance.network_port - constants.VNC_BASE_PORT |
698 | 3be34f57 | Guido Trotter | vnc_command = ("echo 'Instance has VNC listening on %s:%d"
|
699 | 3be34f57 | Guido Trotter | " (display: %d)'" % (vnc_bind_address,
|
700 | 3be34f57 | Guido Trotter | instance.network_port, |
701 | 3be34f57 | Guido Trotter | display)) |
702 | 3be34f57 | Guido Trotter | shell_command = "%s; %s" % (vnc_command, shell_command)
|
703 | 3be34f57 | Guido Trotter | |
704 | a2faf9ee | Guido Trotter | return shell_command
|
705 | eb58f9b1 | Guido Trotter | |
706 | eb58f9b1 | Guido Trotter | def Verify(self): |
707 | eb58f9b1 | Guido Trotter | """Verify the hypervisor.
|
708 | eb58f9b1 | Guido Trotter |
|
709 | eb58f9b1 | Guido Trotter | Check that the binary exists.
|
710 | eb58f9b1 | Guido Trotter |
|
711 | eb58f9b1 | Guido Trotter | """
|
712 | eb58f9b1 | Guido Trotter | if not os.path.exists(constants.KVM_PATH): |
713 | eb58f9b1 | Guido Trotter | return "The kvm binary ('%s') does not exist." % constants.KVM_PATH |
714 | 14aa53cb | Guido Trotter | if not os.path.exists(constants.SOCAT_PATH): |
715 | 14aa53cb | Guido Trotter | return "The socat binary ('%s') does not exist." % constants.SOCAT_PATH |
716 | 14aa53cb | Guido Trotter | |
717 | 6b5605e8 | Iustin Pop | |
718 | 6b5605e8 | Iustin Pop | @classmethod
|
719 | 6b5605e8 | Iustin Pop | def CheckParameterSyntax(cls, hvparams): |
720 | 6b5605e8 | Iustin Pop | """Check the given parameters for validity.
|
721 | 6b5605e8 | Iustin Pop |
|
722 | 6b5605e8 | Iustin Pop | @type hvparams: dict
|
723 | 6b5605e8 | Iustin Pop | @param hvparams: dictionary with parameter names/value
|
724 | 6b5605e8 | Iustin Pop | @raise errors.HypervisorError: when a parameter is not valid
|
725 | 6b5605e8 | Iustin Pop |
|
726 | 6b5605e8 | Iustin Pop | """
|
727 | 47387b1e | Guido Trotter | super(KVMHypervisor, cls).CheckParameterSyntax(hvparams)
|
728 | 6b5605e8 | Iustin Pop | |
729 | df5ab9f0 | Guido Trotter | kernel_path = hvparams[constants.HV_KERNEL_PATH] |
730 | df5ab9f0 | Guido Trotter | if kernel_path:
|
731 | df5ab9f0 | Guido Trotter | if not hvparams[constants.HV_ROOT_PATH]: |
732 | 205ab586 | Iustin Pop | raise errors.HypervisorError("Need a root partition for the instance," |
733 | 205ab586 | Iustin Pop | " if a kernel is defined")
|
734 | 6b5605e8 | Iustin Pop | |
735 | 205ab586 | Iustin Pop | if (hvparams[constants.HV_VNC_X509_VERIFY] and |
736 | 205ab586 | Iustin Pop | not hvparams[constants.HV_VNC_X509]):
|
737 | 205ab586 | Iustin Pop | raise errors.HypervisorError("%s must be defined, if %s is" % |
738 | 205ab586 | Iustin Pop | (constants.HV_VNC_X509, |
739 | 205ab586 | Iustin Pop | constants.HV_VNC_X509_VERIFY)) |
740 | 66d5dbef | Guido Trotter | |
741 | 66d5dbef | Guido Trotter | boot_order = hvparams[constants.HV_BOOT_ORDER] |
742 | 66d5dbef | Guido Trotter | |
743 | 205ab586 | Iustin Pop | if (boot_order == constants.HT_BO_CDROM and |
744 | 205ab586 | Iustin Pop | not hvparams[constants.HV_CDROM_IMAGE_PATH]):
|
745 | 835528af | Iustin Pop | raise errors.HypervisorError("Cannot boot from cdrom without an" |
746 | 835528af | Iustin Pop | " ISO path")
|
747 | 205ab586 | Iustin Pop | if (boot_order == constants.HT_BO_NETWORK and |
748 | 205ab586 | Iustin Pop | hvparams[constants.HV_NIC_TYPE] == constants.HT_NIC_PARAVIRTUAL): |
749 | 8745c3d7 | Guido Trotter | raise errors.HypervisorError("Cannot boot from a paravirtual NIC. Please" |
750 | 835528af | Iustin Pop | " change the NIC type.")
|
751 | f5118ade | Iustin Pop | |
752 | f5118ade | Iustin Pop | @classmethod
|
753 | f5118ade | Iustin Pop | def PowercycleNode(cls): |
754 | f5118ade | Iustin Pop | """KVM powercycle, just a wrapper over Linux powercycle.
|
755 | f5118ade | Iustin Pop |
|
756 | f5118ade | Iustin Pop | """
|
757 | f5118ade | Iustin Pop | cls.LinuxPowercycle() |