root / lib / hypervisor / hv_kvm.py @ 9209d947
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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 | cfc24646 | Iustin Pop | # Copyright (C) 2008, 2009, 2010, 2011, 2012, 2013 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 | 547a63b7 | Balazs Lecz | import errno |
27 | eb58f9b1 | Guido Trotter | import os |
28 | eb58f9b1 | Guido Trotter | import os.path |
29 | eb58f9b1 | Guido Trotter | import re |
30 | eb58f9b1 | Guido Trotter | import tempfile |
31 | 6567aff3 | Guido Trotter | import time |
32 | 30e42c4e | Guido Trotter | import logging |
33 | d19d94db | Guido Trotter | import pwd |
34 | 199b2053 | Apollon Oikonomopoulos | import struct |
35 | 199b2053 | Apollon Oikonomopoulos | import fcntl |
36 | 5d9bfd87 | Apollon Oikonomopoulos | import shutil |
37 | 91c10532 | Andrea Spadaccini | import socket |
38 | fc84cd5d | Guido Trotter | import stat |
39 | 91c10532 | Andrea Spadaccini | import StringIO |
40 | 8b7be6f2 | Dimitris Aragiorgis | from bitarray import bitarray |
41 | b693125f | Tsachy Shacham | try:
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42 | 471a31b6 | Andrea Spadaccini | import affinity # pylint: disable=F0401 |
43 | b693125f | Tsachy Shacham | except ImportError: |
44 | b693125f | Tsachy Shacham | affinity = None
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45 | d7583563 | Dimitris Aragiorgis | try:
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46 | d7583563 | Dimitris Aragiorgis | import fdsend # pylint: disable=F0401 |
47 | d7583563 | Dimitris Aragiorgis | except ImportError: |
48 | d7583563 | Dimitris Aragiorgis | fdsend = None
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49 | eb58f9b1 | Guido Trotter | |
50 | eb58f9b1 | Guido Trotter | from ganeti import utils |
51 | eb58f9b1 | Guido Trotter | from ganeti import constants |
52 | eb58f9b1 | Guido Trotter | from ganeti import errors |
53 | 38e250ba | Guido Trotter | from ganeti import serializer |
54 | 38e250ba | Guido Trotter | from ganeti import objects |
55 | 76431533 | Guido Trotter | from ganeti import uidpool |
56 | 76431533 | Guido Trotter | from ganeti import ssconf |
57 | a744b676 | Manuel Franceschini | from ganeti import netutils |
58 | 9d9bded1 | Michael Hanselmann | from ganeti import pathutils |
59 | 9d9bded1 | Michael Hanselmann | from ganeti.hypervisor import hv_base |
60 | 5d9bfd87 | Apollon Oikonomopoulos | from ganeti.utils import wrapper as utils_wrapper |
61 | eb58f9b1 | Guido Trotter | |
62 | eb58f9b1 | Guido Trotter | |
63 | 0e1e0b6a | Michael Hanselmann | _KVM_NETWORK_SCRIPT = pathutils.CONF_DIR + "/kvm-vif-bridge"
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64 | b693125f | Tsachy Shacham | _KVM_START_PAUSED_FLAG = "-S"
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65 | 748e4b5a | Michael Hanselmann | |
66 | 199b2053 | Apollon Oikonomopoulos | # TUN/TAP driver constants, taken from <linux/if_tun.h>
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67 | 199b2053 | Apollon Oikonomopoulos | # They are architecture-independent and already hardcoded in qemu-kvm source,
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68 | 199b2053 | Apollon Oikonomopoulos | # so we can safely include them here.
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69 | 199b2053 | Apollon Oikonomopoulos | TUNSETIFF = 0x400454ca
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70 | 199b2053 | Apollon Oikonomopoulos | TUNGETIFF = 0x800454d2
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71 | 199b2053 | Apollon Oikonomopoulos | TUNGETFEATURES = 0x800454cf
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72 | 199b2053 | Apollon Oikonomopoulos | IFF_TAP = 0x0002
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73 | 199b2053 | Apollon Oikonomopoulos | IFF_NO_PI = 0x1000
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74 | 199b2053 | Apollon Oikonomopoulos | IFF_VNET_HDR = 0x4000
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75 | 199b2053 | Apollon Oikonomopoulos | |
76 | 07788a0b | Michael Hanselmann | #: SPICE parameters which depend on L{constants.HV_KVM_SPICE_BIND}
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77 | 07788a0b | Michael Hanselmann | _SPICE_ADDITIONAL_PARAMS = frozenset([
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78 | 07788a0b | Michael Hanselmann | constants.HV_KVM_SPICE_IP_VERSION, |
79 | 07788a0b | Michael Hanselmann | constants.HV_KVM_SPICE_PASSWORD_FILE, |
80 | 07788a0b | Michael Hanselmann | constants.HV_KVM_SPICE_LOSSLESS_IMG_COMPR, |
81 | 07788a0b | Michael Hanselmann | constants.HV_KVM_SPICE_JPEG_IMG_COMPR, |
82 | 07788a0b | Michael Hanselmann | constants.HV_KVM_SPICE_ZLIB_GLZ_IMG_COMPR, |
83 | 07788a0b | Michael Hanselmann | constants.HV_KVM_SPICE_STREAMING_VIDEO_DETECTION, |
84 | 07788a0b | Michael Hanselmann | constants.HV_KVM_SPICE_USE_TLS, |
85 | 07788a0b | Michael Hanselmann | ]) |
86 | 07788a0b | Michael Hanselmann | |
87 | 8b7be6f2 | Dimitris Aragiorgis | # Constant bitarray that reflects to a free pci slot
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88 | 8b7be6f2 | Dimitris Aragiorgis | # Use it with bitarray.search()
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89 | 8b7be6f2 | Dimitris Aragiorgis | _AVAILABLE_PCI_SLOT = bitarray("0")
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90 | 8b7be6f2 | Dimitris Aragiorgis | |
91 | 58502c9e | Dimitris Aragiorgis | # below constants show the format of runtime file
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92 | 58502c9e | Dimitris Aragiorgis | # the nics are in second possition, while the disks in 4th (last)
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93 | 4a44d8aa | Dimitris Aragiorgis | # moreover disk entries are stored as a list of in tuples
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94 | 4a44d8aa | Dimitris Aragiorgis | # (L{objects.Disk}, link_name)
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95 | 58502c9e | Dimitris Aragiorgis | _KVM_NICS_RUNTIME_INDEX = 1
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96 | 58502c9e | Dimitris Aragiorgis | _KVM_DISKS_RUNTIME_INDEX = 3
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97 | 58502c9e | Dimitris Aragiorgis | _DEVICE_RUNTIME_INDEX = { |
98 | 58502c9e | Dimitris Aragiorgis | constants.HOTPLUG_TARGET_DISK: _KVM_DISKS_RUNTIME_INDEX, |
99 | 58502c9e | Dimitris Aragiorgis | constants.HOTPLUG_TARGET_NIC: _KVM_NICS_RUNTIME_INDEX |
100 | 58502c9e | Dimitris Aragiorgis | } |
101 | 58502c9e | Dimitris Aragiorgis | _FIND_RUNTIME_ENTRY = { |
102 | 58502c9e | Dimitris Aragiorgis | constants.HOTPLUG_TARGET_NIC: |
103 | 58502c9e | Dimitris Aragiorgis | lambda nic, kvm_nics: [n for n in kvm_nics if n.uuid == nic.uuid], |
104 | 58502c9e | Dimitris Aragiorgis | constants.HOTPLUG_TARGET_DISK: |
105 | 277a9de7 | Dimitris Aragiorgis | lambda disk, kvm_disks: [(d, l) for (d, l) in kvm_disks |
106 | 58502c9e | Dimitris Aragiorgis | if d.uuid == disk.uuid]
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107 | 58502c9e | Dimitris Aragiorgis | } |
108 | 58502c9e | Dimitris Aragiorgis | _RUNTIME_DEVICE = { |
109 | 58502c9e | Dimitris Aragiorgis | constants.HOTPLUG_TARGET_NIC: lambda d: d,
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110 | 277a9de7 | Dimitris Aragiorgis | constants.HOTPLUG_TARGET_DISK: lambda (d, e): d
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111 | 58502c9e | Dimitris Aragiorgis | } |
112 | 58502c9e | Dimitris Aragiorgis | _RUNTIME_ENTRY = { |
113 | 58502c9e | Dimitris Aragiorgis | constants.HOTPLUG_TARGET_NIC: lambda d, e: d,
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114 | 277a9de7 | Dimitris Aragiorgis | constants.HOTPLUG_TARGET_DISK: lambda d, e: (d, e)
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115 | 58502c9e | Dimitris Aragiorgis | } |
116 | 58502c9e | Dimitris Aragiorgis | |
117 | 58502c9e | Dimitris Aragiorgis | |
118 | f44c88c7 | Dimitris Aragiorgis | def _GenerateDeviceKVMId(dev_type, dev, idx=None): |
119 | 8b7be6f2 | Dimitris Aragiorgis | """Helper function to generate a unique device name used by KVM
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120 | 8b7be6f2 | Dimitris Aragiorgis |
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121 | 8b7be6f2 | Dimitris Aragiorgis | QEMU monitor commands use names to identify devices. Here we use their pci
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122 | 8b7be6f2 | Dimitris Aragiorgis | slot and a part of their UUID to name them. dev.pci might be None for old
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123 | 8b7be6f2 | Dimitris Aragiorgis | devices in the cluster.
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124 | 8b7be6f2 | Dimitris Aragiorgis |
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125 | 8b7be6f2 | Dimitris Aragiorgis | @type dev_type: sting
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126 | 8b7be6f2 | Dimitris Aragiorgis | @param dev_type: device type of param dev
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127 | 8b7be6f2 | Dimitris Aragiorgis | @type dev: L{objects.Disk} or L{objects.NIC}
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128 | 8b7be6f2 | Dimitris Aragiorgis | @param dev: the device object for which we generate a kvm name
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129 | 8b7be6f2 | Dimitris Aragiorgis | @raise errors.HotplugError: in case a device has no pci slot (old devices)
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130 | 8b7be6f2 | Dimitris Aragiorgis |
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131 | 8b7be6f2 | Dimitris Aragiorgis | """
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132 | 8b7be6f2 | Dimitris Aragiorgis | |
133 | f44c88c7 | Dimitris Aragiorgis | # proper device id - available in latest Ganeti versions
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134 | f44c88c7 | Dimitris Aragiorgis | if dev.pci and dev.uuid: |
135 | f44c88c7 | Dimitris Aragiorgis | return "%s-%s-pci-%d" % (dev_type.lower(), dev.uuid.split("-")[0], dev.pci) |
136 | 8b7be6f2 | Dimitris Aragiorgis | |
137 | f44c88c7 | Dimitris Aragiorgis | # dummy device id - returned only to _GenerateKVMBlockDevicesOptions
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138 | f44c88c7 | Dimitris Aragiorgis | # This enables -device option for paravirtual disk_type
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139 | f44c88c7 | Dimitris Aragiorgis | if idx is not None: |
140 | f44c88c7 | Dimitris Aragiorgis | return "%s-%d" % (dev_type.lower(), idx) |
141 | f44c88c7 | Dimitris Aragiorgis | |
142 | f44c88c7 | Dimitris Aragiorgis | raise errors.HotplugError("Hotplug is not supported for devices" |
143 | f44c88c7 | Dimitris Aragiorgis | " without UUID or PCI info")
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144 | 8b7be6f2 | Dimitris Aragiorgis | |
145 | 8b7be6f2 | Dimitris Aragiorgis | |
146 | 8b7be6f2 | Dimitris Aragiorgis | def _UpdatePCISlots(dev, pci_reservations): |
147 | 8b7be6f2 | Dimitris Aragiorgis | """Update pci configuration for a stopped instance
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148 | 8b7be6f2 | Dimitris Aragiorgis |
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149 | 8b7be6f2 | Dimitris Aragiorgis | If dev has a pci slot then reserve it, else find first available
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150 | 8b7be6f2 | Dimitris Aragiorgis | in pci_reservations bitarray. It acts on the same objects passed
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151 | 8b7be6f2 | Dimitris Aragiorgis | as params so there is no need to return anything.
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152 | 8b7be6f2 | Dimitris Aragiorgis |
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153 | 8b7be6f2 | Dimitris Aragiorgis | @type dev: L{objects.Disk} or L{objects.NIC}
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154 | 8b7be6f2 | Dimitris Aragiorgis | @param dev: the device object for which we update its pci slot
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155 | 8b7be6f2 | Dimitris Aragiorgis | @type pci_reservations: bitarray
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156 | 8b7be6f2 | Dimitris Aragiorgis | @param pci_reservations: existing pci reservations for an instance
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157 | 8b7be6f2 | Dimitris Aragiorgis | @raise errors.HotplugError: in case an instance has all its slot occupied
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158 | 8b7be6f2 | Dimitris Aragiorgis |
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159 | 8b7be6f2 | Dimitris Aragiorgis | """
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160 | 8b7be6f2 | Dimitris Aragiorgis | if dev.pci:
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161 | 8b7be6f2 | Dimitris Aragiorgis | free = dev.pci |
162 | 8b7be6f2 | Dimitris Aragiorgis | else: # pylint: disable=E1103 |
163 | 8b7be6f2 | Dimitris Aragiorgis | [free] = pci_reservations.search(_AVAILABLE_PCI_SLOT, 1)
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164 | 8b7be6f2 | Dimitris Aragiorgis | if not free: |
165 | 8b7be6f2 | Dimitris Aragiorgis | raise errors.HypervisorError("All PCI slots occupied") |
166 | 8b7be6f2 | Dimitris Aragiorgis | dev.pci = int(free)
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167 | 8b7be6f2 | Dimitris Aragiorgis | |
168 | 8b7be6f2 | Dimitris Aragiorgis | pci_reservations[free] = True
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169 | 8b7be6f2 | Dimitris Aragiorgis | |
170 | 8b7be6f2 | Dimitris Aragiorgis | |
171 | 58502c9e | Dimitris Aragiorgis | def _GetExistingDeviceInfo(dev_type, device, runtime): |
172 | 58502c9e | Dimitris Aragiorgis | """Helper function to get an existing device inside the runtime file
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173 | 58502c9e | Dimitris Aragiorgis |
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174 | 58502c9e | Dimitris Aragiorgis | Used when an instance is running. Load kvm runtime file and search
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175 | 58502c9e | Dimitris Aragiorgis | for a device based on its type and uuid.
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176 | 58502c9e | Dimitris Aragiorgis |
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177 | 58502c9e | Dimitris Aragiorgis | @type dev_type: sting
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178 | 58502c9e | Dimitris Aragiorgis | @param dev_type: device type of param dev
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179 | 58502c9e | Dimitris Aragiorgis | @type device: L{objects.Disk} or L{objects.NIC}
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180 | 58502c9e | Dimitris Aragiorgis | @param device: the device object for which we generate a kvm name
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181 | 58502c9e | Dimitris Aragiorgis | @type runtime: tuple (cmd, nics, hvparams, disks)
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182 | 58502c9e | Dimitris Aragiorgis | @param runtime: the runtime data to search for the device
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183 | 58502c9e | Dimitris Aragiorgis | @raise errors.HotplugError: in case the requested device does not
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184 | 58502c9e | Dimitris Aragiorgis | exist (e.g. device has been added without --hotplug option) or
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185 | 58502c9e | Dimitris Aragiorgis | device info has not pci slot (e.g. old devices in the cluster)
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186 | 58502c9e | Dimitris Aragiorgis |
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187 | 58502c9e | Dimitris Aragiorgis | """
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188 | 58502c9e | Dimitris Aragiorgis | index = _DEVICE_RUNTIME_INDEX[dev_type] |
189 | 58502c9e | Dimitris Aragiorgis | found = _FIND_RUNTIME_ENTRY[dev_type](device, runtime[index]) |
190 | 58502c9e | Dimitris Aragiorgis | if not found: |
191 | 58502c9e | Dimitris Aragiorgis | raise errors.HotplugError("Cannot find runtime info for %s with UUID %s" % |
192 | 58502c9e | Dimitris Aragiorgis | (dev_type, device.uuid)) |
193 | 58502c9e | Dimitris Aragiorgis | |
194 | 58502c9e | Dimitris Aragiorgis | return found[0] |
195 | 58502c9e | Dimitris Aragiorgis | |
196 | 58502c9e | Dimitris Aragiorgis | |
197 | e2800fca | Dimitris Aragiorgis | def _UpgradeSerializedRuntime(serialized_runtime): |
198 | e2800fca | Dimitris Aragiorgis | """Upgrade runtime data
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199 | e2800fca | Dimitris Aragiorgis |
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200 | e2800fca | Dimitris Aragiorgis | Remove any deprecated fields or change the format of the data.
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201 | e2800fca | Dimitris Aragiorgis | The runtime files are not upgraded when Ganeti is upgraded, so the required
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202 | e2800fca | Dimitris Aragiorgis | modification have to be performed here.
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203 | 58502c9e | Dimitris Aragiorgis |
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204 | 58502c9e | Dimitris Aragiorgis | @type serialized_runtime: string
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205 | 58502c9e | Dimitris Aragiorgis | @param serialized_runtime: raw text data read from actual runtime file
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206 | e2800fca | Dimitris Aragiorgis | @return: (cmd, nic dicts, hvparams, bdev dicts)
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207 | e2800fca | Dimitris Aragiorgis | @rtype: tuple
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208 | 58502c9e | Dimitris Aragiorgis |
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209 | 58502c9e | Dimitris Aragiorgis | """
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210 | 58502c9e | Dimitris Aragiorgis | loaded_runtime = serializer.Load(serialized_runtime) |
211 | e2800fca | Dimitris Aragiorgis | kvm_cmd, serialized_nics, hvparams = loaded_runtime[:3]
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212 | e2800fca | Dimitris Aragiorgis | if len(loaded_runtime) >= 4: |
213 | e2800fca | Dimitris Aragiorgis | serialized_disks = loaded_runtime[3]
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214 | 58502c9e | Dimitris Aragiorgis | else:
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215 | e2800fca | Dimitris Aragiorgis | serialized_disks = [] |
216 | e2800fca | Dimitris Aragiorgis | |
217 | e2800fca | Dimitris Aragiorgis | for nic in serialized_nics: |
218 | e2800fca | Dimitris Aragiorgis | # Add a dummy uuid slot if an pre-2.8 NIC is found
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219 | e2800fca | Dimitris Aragiorgis | if "uuid" not in nic: |
220 | e2800fca | Dimitris Aragiorgis | nic["uuid"] = utils.NewUUID()
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221 | e2800fca | Dimitris Aragiorgis | |
222 | e2800fca | Dimitris Aragiorgis | return kvm_cmd, serialized_nics, hvparams, serialized_disks
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223 | e2800fca | Dimitris Aragiorgis | |
224 | 58502c9e | Dimitris Aragiorgis | |
225 | e2800fca | Dimitris Aragiorgis | def _AnalyzeSerializedRuntime(serialized_runtime): |
226 | e2800fca | Dimitris Aragiorgis | """Return runtime entries for a serialized runtime file
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227 | e2800fca | Dimitris Aragiorgis |
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228 | e2800fca | Dimitris Aragiorgis | @type serialized_runtime: string
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229 | e2800fca | Dimitris Aragiorgis | @param serialized_runtime: raw text data read from actual runtime file
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230 | e2800fca | Dimitris Aragiorgis | @return: (cmd, nics, hvparams, bdevs)
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231 | e2800fca | Dimitris Aragiorgis | @rtype: tuple
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232 | e2800fca | Dimitris Aragiorgis |
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233 | e2800fca | Dimitris Aragiorgis | """
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234 | e2800fca | Dimitris Aragiorgis | kvm_cmd, serialized_nics, hvparams, serialized_disks = \ |
235 | e2800fca | Dimitris Aragiorgis | _UpgradeSerializedRuntime(serialized_runtime) |
236 | 58502c9e | Dimitris Aragiorgis | kvm_nics = [objects.NIC.FromDict(snic) for snic in serialized_nics] |
237 | 4a44d8aa | Dimitris Aragiorgis | kvm_disks = [(objects.Disk.FromDict(sdisk), link) |
238 | 4a44d8aa | Dimitris Aragiorgis | for sdisk, link in serialized_disks] |
239 | 58502c9e | Dimitris Aragiorgis | |
240 | 4a44d8aa | Dimitris Aragiorgis | return (kvm_cmd, kvm_nics, hvparams, kvm_disks)
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241 | 58502c9e | Dimitris Aragiorgis | |
242 | 199b2053 | Apollon Oikonomopoulos | |
243 | ea2bcb82 | Michael Hanselmann | def _GetTunFeatures(fd, _ioctl=fcntl.ioctl): |
244 | ea2bcb82 | Michael Hanselmann | """Retrieves supported TUN features from file descriptor.
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245 | ea2bcb82 | Michael Hanselmann |
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246 | ea2bcb82 | Michael Hanselmann | @see: L{_ProbeTapVnetHdr}
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247 | ea2bcb82 | Michael Hanselmann |
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248 | ea2bcb82 | Michael Hanselmann | """
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249 | ea2bcb82 | Michael Hanselmann | req = struct.pack("I", 0) |
250 | ea2bcb82 | Michael Hanselmann | try:
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251 | ea2bcb82 | Michael Hanselmann | buf = _ioctl(fd, TUNGETFEATURES, req) |
252 | ea2bcb82 | Michael Hanselmann | except EnvironmentError, err: |
253 | cfc24646 | Iustin Pop | logging.warning("ioctl(TUNGETFEATURES) failed: %s", err)
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254 | ea2bcb82 | Michael Hanselmann | return None |
255 | ea2bcb82 | Michael Hanselmann | else:
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256 | ea2bcb82 | Michael Hanselmann | (flags, ) = struct.unpack("I", buf)
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257 | ea2bcb82 | Michael Hanselmann | return flags
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258 | ea2bcb82 | Michael Hanselmann | |
259 | ea2bcb82 | Michael Hanselmann | |
260 | ea2bcb82 | Michael Hanselmann | def _ProbeTapVnetHdr(fd, _features_fn=_GetTunFeatures): |
261 | 199b2053 | Apollon Oikonomopoulos | """Check whether to enable the IFF_VNET_HDR flag.
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262 | 199b2053 | Apollon Oikonomopoulos |
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263 | 199b2053 | Apollon Oikonomopoulos | To do this, _all_ of the following conditions must be met:
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264 | 199b2053 | Apollon Oikonomopoulos | 1. TUNGETFEATURES ioctl() *must* be implemented
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265 | 199b2053 | Apollon Oikonomopoulos | 2. TUNGETFEATURES ioctl() result *must* contain the IFF_VNET_HDR flag
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266 | 199b2053 | Apollon Oikonomopoulos | 3. TUNGETIFF ioctl() *must* be implemented; reading the kernel code in
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267 | 199b2053 | Apollon Oikonomopoulos | drivers/net/tun.c there is no way to test this until after the tap device
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268 | 199b2053 | Apollon Oikonomopoulos | has been created using TUNSETIFF, and there is no way to change the
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269 | 199b2053 | Apollon Oikonomopoulos | IFF_VNET_HDR flag after creating the interface, catch-22! However both
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270 | 199b2053 | Apollon Oikonomopoulos | TUNGETIFF and TUNGETFEATURES were introduced in kernel version 2.6.27,
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271 | 199b2053 | Apollon Oikonomopoulos | thus we can expect TUNGETIFF to be present if TUNGETFEATURES is.
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272 | 199b2053 | Apollon Oikonomopoulos |
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273 | 199b2053 | Apollon Oikonomopoulos | @type fd: int
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274 | 199b2053 | Apollon Oikonomopoulos | @param fd: the file descriptor of /dev/net/tun
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275 | 199b2053 | Apollon Oikonomopoulos |
|
276 | 199b2053 | Apollon Oikonomopoulos | """
|
277 | ea2bcb82 | Michael Hanselmann | flags = _features_fn(fd) |
278 | 199b2053 | Apollon Oikonomopoulos | |
279 | ea2bcb82 | Michael Hanselmann | if flags is None: |
280 | ea2bcb82 | Michael Hanselmann | # Not supported
|
281 | 199b2053 | Apollon Oikonomopoulos | return False |
282 | 199b2053 | Apollon Oikonomopoulos | |
283 | ea2bcb82 | Michael Hanselmann | result = bool(flags & IFF_VNET_HDR)
|
284 | ea2bcb82 | Michael Hanselmann | |
285 | ea2bcb82 | Michael Hanselmann | if not result: |
286 | ea2bcb82 | Michael Hanselmann | logging.warning("Kernel does not support IFF_VNET_HDR, not enabling")
|
287 | ea2bcb82 | Michael Hanselmann | |
288 | ea2bcb82 | Michael Hanselmann | return result
|
289 | ea2bcb82 | Michael Hanselmann | |
290 | 199b2053 | Apollon Oikonomopoulos | |
291 | 199b2053 | Apollon Oikonomopoulos | def _OpenTap(vnet_hdr=True): |
292 | 199b2053 | Apollon Oikonomopoulos | """Open a new tap device and return its file descriptor.
|
293 | 199b2053 | Apollon Oikonomopoulos |
|
294 | 199b2053 | Apollon Oikonomopoulos | This is intended to be used by a qemu-type hypervisor together with the -net
|
295 | 199b2053 | Apollon Oikonomopoulos | tap,fd=<fd> command line parameter.
|
296 | 199b2053 | Apollon Oikonomopoulos |
|
297 | 199b2053 | Apollon Oikonomopoulos | @type vnet_hdr: boolean
|
298 | 199b2053 | Apollon Oikonomopoulos | @param vnet_hdr: Enable the VNET Header
|
299 | 199b2053 | Apollon Oikonomopoulos | @return: (ifname, tapfd)
|
300 | 199b2053 | Apollon Oikonomopoulos | @rtype: tuple
|
301 | 199b2053 | Apollon Oikonomopoulos |
|
302 | 199b2053 | Apollon Oikonomopoulos | """
|
303 | 199b2053 | Apollon Oikonomopoulos | try:
|
304 | 199b2053 | Apollon Oikonomopoulos | tapfd = os.open("/dev/net/tun", os.O_RDWR)
|
305 | 199b2053 | Apollon Oikonomopoulos | except EnvironmentError: |
306 | 199b2053 | Apollon Oikonomopoulos | raise errors.HypervisorError("Failed to open /dev/net/tun") |
307 | 199b2053 | Apollon Oikonomopoulos | |
308 | 199b2053 | Apollon Oikonomopoulos | flags = IFF_TAP | IFF_NO_PI |
309 | 199b2053 | Apollon Oikonomopoulos | |
310 | 199b2053 | Apollon Oikonomopoulos | if vnet_hdr and _ProbeTapVnetHdr(tapfd): |
311 | 199b2053 | Apollon Oikonomopoulos | flags |= IFF_VNET_HDR |
312 | 199b2053 | Apollon Oikonomopoulos | |
313 | 199b2053 | Apollon Oikonomopoulos | # The struct ifreq ioctl request (see netdevice(7))
|
314 | 199b2053 | Apollon Oikonomopoulos | ifr = struct.pack("16sh", "", flags) |
315 | 199b2053 | Apollon Oikonomopoulos | |
316 | 199b2053 | Apollon Oikonomopoulos | try:
|
317 | 199b2053 | Apollon Oikonomopoulos | res = fcntl.ioctl(tapfd, TUNSETIFF, ifr) |
318 | 6f1e1921 | Michael Hanselmann | except EnvironmentError, err: |
319 | 6f1e1921 | Michael Hanselmann | raise errors.HypervisorError("Failed to allocate a new TAP device: %s" % |
320 | 6f1e1921 | Michael Hanselmann | err) |
321 | 199b2053 | Apollon Oikonomopoulos | |
322 | 199b2053 | Apollon Oikonomopoulos | # Get the interface name from the ioctl
|
323 | 199b2053 | Apollon Oikonomopoulos | ifname = struct.unpack("16sh", res)[0].strip("\x00") |
324 | 199b2053 | Apollon Oikonomopoulos | return (ifname, tapfd)
|
325 | 199b2053 | Apollon Oikonomopoulos | |
326 | 748e4b5a | Michael Hanselmann | |
327 | 91c10532 | Andrea Spadaccini | class QmpMessage: |
328 | 91c10532 | Andrea Spadaccini | """QEMU Messaging Protocol (QMP) message.
|
329 | 91c10532 | Andrea Spadaccini |
|
330 | 91c10532 | Andrea Spadaccini | """
|
331 | 91c10532 | Andrea Spadaccini | def __init__(self, data): |
332 | 91c10532 | Andrea Spadaccini | """Creates a new QMP message based on the passed data.
|
333 | 91c10532 | Andrea Spadaccini |
|
334 | 91c10532 | Andrea Spadaccini | """
|
335 | 91c10532 | Andrea Spadaccini | if not isinstance(data, dict): |
336 | 91c10532 | Andrea Spadaccini | raise TypeError("QmpMessage must be initialized with a dict") |
337 | 91c10532 | Andrea Spadaccini | |
338 | 91c10532 | Andrea Spadaccini | self.data = data
|
339 | 91c10532 | Andrea Spadaccini | |
340 | 91c10532 | Andrea Spadaccini | def __getitem__(self, field_name): |
341 | 91c10532 | Andrea Spadaccini | """Get the value of the required field if present, or None.
|
342 | 91c10532 | Andrea Spadaccini |
|
343 | 91c10532 | Andrea Spadaccini | Overrides the [] operator to provide access to the message data,
|
344 | 91c10532 | Andrea Spadaccini | returning None if the required item is not in the message
|
345 | 91c10532 | Andrea Spadaccini | @return: the value of the field_name field, or None if field_name
|
346 | 91c10532 | Andrea Spadaccini | is not contained in the message
|
347 | 91c10532 | Andrea Spadaccini |
|
348 | 91c10532 | Andrea Spadaccini | """
|
349 | 9b87c2cf | Michael Hanselmann | return self.data.get(field_name, None) |
350 | 91c10532 | Andrea Spadaccini | |
351 | 91c10532 | Andrea Spadaccini | def __setitem__(self, field_name, field_value): |
352 | 91c10532 | Andrea Spadaccini | """Set the value of the required field_name to field_value.
|
353 | 91c10532 | Andrea Spadaccini |
|
354 | 91c10532 | Andrea Spadaccini | """
|
355 | 91c10532 | Andrea Spadaccini | self.data[field_name] = field_value
|
356 | 91c10532 | Andrea Spadaccini | |
357 | 91c10532 | Andrea Spadaccini | @staticmethod
|
358 | 91c10532 | Andrea Spadaccini | def BuildFromJsonString(json_string): |
359 | 91c10532 | Andrea Spadaccini | """Build a QmpMessage from a JSON encoded string.
|
360 | 91c10532 | Andrea Spadaccini |
|
361 | 91c10532 | Andrea Spadaccini | @type json_string: str
|
362 | 91c10532 | Andrea Spadaccini | @param json_string: JSON string representing the message
|
363 | 91c10532 | Andrea Spadaccini | @rtype: L{QmpMessage}
|
364 | 91c10532 | Andrea Spadaccini | @return: a L{QmpMessage} built from json_string
|
365 | 91c10532 | Andrea Spadaccini |
|
366 | 91c10532 | Andrea Spadaccini | """
|
367 | 91c10532 | Andrea Spadaccini | # Parse the string
|
368 | 91c10532 | Andrea Spadaccini | data = serializer.LoadJson(json_string) |
369 | 91c10532 | Andrea Spadaccini | return QmpMessage(data)
|
370 | 91c10532 | Andrea Spadaccini | |
371 | 91c10532 | Andrea Spadaccini | def __str__(self): |
372 | a182a3ed | Michael Hanselmann | # The protocol expects the JSON object to be sent as a single line.
|
373 | a182a3ed | Michael Hanselmann | return serializer.DumpJson(self.data) |
374 | 91c10532 | Andrea Spadaccini | |
375 | 91c10532 | Andrea Spadaccini | def __eq__(self, other): |
376 | 91c10532 | Andrea Spadaccini | # When comparing two QmpMessages, we are interested in comparing
|
377 | 91c10532 | Andrea Spadaccini | # their internal representation of the message data
|
378 | 91c10532 | Andrea Spadaccini | return self.data == other.data |
379 | 91c10532 | Andrea Spadaccini | |
380 | 91c10532 | Andrea Spadaccini | |
381 | 172a75dc | Dimitris Aragiorgis | class MonitorSocket(object): |
382 | 91c10532 | Andrea Spadaccini | _SOCKET_TIMEOUT = 5
|
383 | 91c10532 | Andrea Spadaccini | |
384 | 91c10532 | Andrea Spadaccini | def __init__(self, monitor_filename): |
385 | 172a75dc | Dimitris Aragiorgis | """Instantiates the MonitorSocket object.
|
386 | 91c10532 | Andrea Spadaccini |
|
387 | 91c10532 | Andrea Spadaccini | @type monitor_filename: string
|
388 | 91c10532 | Andrea Spadaccini | @param monitor_filename: the filename of the UNIX raw socket on which the
|
389 | 172a75dc | Dimitris Aragiorgis | monitor (QMP or simple one) is listening
|
390 | 91c10532 | Andrea Spadaccini |
|
391 | 91c10532 | Andrea Spadaccini | """
|
392 | 91c10532 | Andrea Spadaccini | self.monitor_filename = monitor_filename
|
393 | 91c10532 | Andrea Spadaccini | self.sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
|
394 | 91c10532 | Andrea Spadaccini | # We want to fail if the server doesn't send a complete message
|
395 | 91c10532 | Andrea Spadaccini | # in a reasonable amount of time
|
396 | 91c10532 | Andrea Spadaccini | self.sock.settimeout(self._SOCKET_TIMEOUT) |
397 | 91c10532 | Andrea Spadaccini | self._connected = False |
398 | 91c10532 | Andrea Spadaccini | |
399 | fc84cd5d | Guido Trotter | def _check_socket(self): |
400 | fc84cd5d | Guido Trotter | sock_stat = None
|
401 | fc84cd5d | Guido Trotter | try:
|
402 | fc84cd5d | Guido Trotter | sock_stat = os.stat(self.monitor_filename)
|
403 | fc84cd5d | Guido Trotter | except EnvironmentError, err: |
404 | fc84cd5d | Guido Trotter | if err.errno == errno.ENOENT:
|
405 | 172a75dc | Dimitris Aragiorgis | raise errors.HypervisorError("No monitor socket found") |
406 | fc84cd5d | Guido Trotter | else:
|
407 | 172a75dc | Dimitris Aragiorgis | raise errors.HypervisorError("Error checking monitor socket: %s", |
408 | fc84cd5d | Guido Trotter | utils.ErrnoOrStr(err)) |
409 | fc84cd5d | Guido Trotter | if not stat.S_ISSOCK(sock_stat.st_mode): |
410 | 172a75dc | Dimitris Aragiorgis | raise errors.HypervisorError("Monitor socket is not a socket") |
411 | fc84cd5d | Guido Trotter | |
412 | 91c10532 | Andrea Spadaccini | def _check_connection(self): |
413 | 91c10532 | Andrea Spadaccini | """Make sure that the connection is established.
|
414 | 91c10532 | Andrea Spadaccini |
|
415 | 91c10532 | Andrea Spadaccini | """
|
416 | 91c10532 | Andrea Spadaccini | if not self._connected: |
417 | 172a75dc | Dimitris Aragiorgis | raise errors.ProgrammerError("To use a MonitorSocket you need to first" |
418 | 91c10532 | Andrea Spadaccini | " invoke connect() on it")
|
419 | 91c10532 | Andrea Spadaccini | |
420 | 91c10532 | Andrea Spadaccini | def connect(self): |
421 | 172a75dc | Dimitris Aragiorgis | """Connects to the monitor.
|
422 | 91c10532 | Andrea Spadaccini |
|
423 | 172a75dc | Dimitris Aragiorgis | Connects to the UNIX socket
|
424 | 91c10532 | Andrea Spadaccini |
|
425 | 91c10532 | Andrea Spadaccini | @raise errors.HypervisorError: when there are communication errors
|
426 | 91c10532 | Andrea Spadaccini |
|
427 | 91c10532 | Andrea Spadaccini | """
|
428 | fc84cd5d | Guido Trotter | if self._connected: |
429 | fc84cd5d | Guido Trotter | raise errors.ProgrammerError("Cannot connect twice") |
430 | fc84cd5d | Guido Trotter | |
431 | fc84cd5d | Guido Trotter | self._check_socket()
|
432 | fc84cd5d | Guido Trotter | |
433 | fc84cd5d | Guido Trotter | # Check file existance/stuff
|
434 | fc84cd5d | Guido Trotter | try:
|
435 | fc84cd5d | Guido Trotter | self.sock.connect(self.monitor_filename) |
436 | fc84cd5d | Guido Trotter | except EnvironmentError: |
437 | fc84cd5d | Guido Trotter | raise errors.HypervisorError("Can't connect to qmp socket") |
438 | 91c10532 | Andrea Spadaccini | self._connected = True |
439 | 91c10532 | Andrea Spadaccini | |
440 | 172a75dc | Dimitris Aragiorgis | def close(self): |
441 | 172a75dc | Dimitris Aragiorgis | """Closes the socket
|
442 | 172a75dc | Dimitris Aragiorgis |
|
443 | 172a75dc | Dimitris Aragiorgis | It cannot be used after this call.
|
444 | 172a75dc | Dimitris Aragiorgis |
|
445 | 172a75dc | Dimitris Aragiorgis | """
|
446 | 172a75dc | Dimitris Aragiorgis | self.sock.close()
|
447 | 172a75dc | Dimitris Aragiorgis | |
448 | 172a75dc | Dimitris Aragiorgis | |
449 | 172a75dc | Dimitris Aragiorgis | class QmpConnection(MonitorSocket): |
450 | 172a75dc | Dimitris Aragiorgis | """Connection to the QEMU Monitor using the QEMU Monitor Protocol (QMP).
|
451 | 172a75dc | Dimitris Aragiorgis |
|
452 | 172a75dc | Dimitris Aragiorgis | """
|
453 | 172a75dc | Dimitris Aragiorgis | _FIRST_MESSAGE_KEY = "QMP"
|
454 | 172a75dc | Dimitris Aragiorgis | _EVENT_KEY = "event"
|
455 | 172a75dc | Dimitris Aragiorgis | _ERROR_KEY = "error"
|
456 | 172a75dc | Dimitris Aragiorgis | _RETURN_KEY = RETURN_KEY = "return"
|
457 | 172a75dc | Dimitris Aragiorgis | _ACTUAL_KEY = ACTUAL_KEY = "actual"
|
458 | 172a75dc | Dimitris Aragiorgis | _ERROR_CLASS_KEY = "class"
|
459 | 172a75dc | Dimitris Aragiorgis | _ERROR_DATA_KEY = "data"
|
460 | 172a75dc | Dimitris Aragiorgis | _ERROR_DESC_KEY = "desc"
|
461 | 172a75dc | Dimitris Aragiorgis | _EXECUTE_KEY = "execute"
|
462 | 172a75dc | Dimitris Aragiorgis | _ARGUMENTS_KEY = "arguments"
|
463 | 172a75dc | Dimitris Aragiorgis | _CAPABILITIES_COMMAND = "qmp_capabilities"
|
464 | 172a75dc | Dimitris Aragiorgis | _MESSAGE_END_TOKEN = "\r\n"
|
465 | 172a75dc | Dimitris Aragiorgis | |
466 | 172a75dc | Dimitris Aragiorgis | def __init__(self, monitor_filename): |
467 | 172a75dc | Dimitris Aragiorgis | super(QmpConnection, self).__init__(monitor_filename) |
468 | 172a75dc | Dimitris Aragiorgis | self._buf = "" |
469 | 172a75dc | Dimitris Aragiorgis | |
470 | 172a75dc | Dimitris Aragiorgis | def connect(self): |
471 | 172a75dc | Dimitris Aragiorgis | """Connects to the QMP monitor.
|
472 | 172a75dc | Dimitris Aragiorgis |
|
473 | 172a75dc | Dimitris Aragiorgis | Connects to the UNIX socket and makes sure that we can actually send and
|
474 | 172a75dc | Dimitris Aragiorgis | receive data to the kvm instance via QMP.
|
475 | 172a75dc | Dimitris Aragiorgis |
|
476 | 172a75dc | Dimitris Aragiorgis | @raise errors.HypervisorError: when there are communication errors
|
477 | 172a75dc | Dimitris Aragiorgis | @raise errors.ProgrammerError: when there are data serialization errors
|
478 | 172a75dc | Dimitris Aragiorgis |
|
479 | 172a75dc | Dimitris Aragiorgis | """
|
480 | 172a75dc | Dimitris Aragiorgis | super(QmpConnection, self).connect() |
481 | 91c10532 | Andrea Spadaccini | # Check if we receive a correct greeting message from the server
|
482 | 91c10532 | Andrea Spadaccini | # (As per the QEMU Protocol Specification 0.1 - section 2.2)
|
483 | 91c10532 | Andrea Spadaccini | greeting = self._Recv()
|
484 | 91c10532 | Andrea Spadaccini | if not greeting[self._FIRST_MESSAGE_KEY]: |
485 | 91c10532 | Andrea Spadaccini | self._connected = False |
486 | afa9bb2e | Michael Hanselmann | raise errors.HypervisorError("kvm: QMP communication error (wrong" |
487 | 91c10532 | Andrea Spadaccini | " server greeting")
|
488 | 91c10532 | Andrea Spadaccini | |
489 | 91c10532 | Andrea Spadaccini | # Let's put the monitor in command mode using the qmp_capabilities
|
490 | 91c10532 | Andrea Spadaccini | # command, or else no command will be executable.
|
491 | 91c10532 | Andrea Spadaccini | # (As per the QEMU Protocol Specification 0.1 - section 4)
|
492 | 91c10532 | Andrea Spadaccini | self.Execute(self._CAPABILITIES_COMMAND) |
493 | 91c10532 | Andrea Spadaccini | |
494 | 91c10532 | Andrea Spadaccini | def _ParseMessage(self, buf): |
495 | 91c10532 | Andrea Spadaccini | """Extract and parse a QMP message from the given buffer.
|
496 | 91c10532 | Andrea Spadaccini |
|
497 | 91c10532 | Andrea Spadaccini | Seeks for a QMP message in the given buf. If found, it parses it and
|
498 | 91c10532 | Andrea Spadaccini | returns it together with the rest of the characters in the buf.
|
499 | 91c10532 | Andrea Spadaccini | If no message is found, returns None and the whole buffer.
|
500 | 91c10532 | Andrea Spadaccini |
|
501 | 91c10532 | Andrea Spadaccini | @raise errors.ProgrammerError: when there are data serialization errors
|
502 | 91c10532 | Andrea Spadaccini |
|
503 | 91c10532 | Andrea Spadaccini | """
|
504 | 91c10532 | Andrea Spadaccini | message = None
|
505 | 91c10532 | Andrea Spadaccini | # Check if we got the message end token (CRLF, as per the QEMU Protocol
|
506 | 91c10532 | Andrea Spadaccini | # Specification 0.1 - Section 2.1.1)
|
507 | 91c10532 | Andrea Spadaccini | pos = buf.find(self._MESSAGE_END_TOKEN)
|
508 | 91c10532 | Andrea Spadaccini | if pos >= 0: |
509 | 91c10532 | Andrea Spadaccini | try:
|
510 | 91c10532 | Andrea Spadaccini | message = QmpMessage.BuildFromJsonString(buf[:pos + 1])
|
511 | 91c10532 | Andrea Spadaccini | except Exception, err: |
512 | 91c10532 | Andrea Spadaccini | raise errors.ProgrammerError("QMP data serialization error: %s" % err) |
513 | 91c10532 | Andrea Spadaccini | buf = buf[pos + 1:]
|
514 | 91c10532 | Andrea Spadaccini | |
515 | 91c10532 | Andrea Spadaccini | return (message, buf)
|
516 | 91c10532 | Andrea Spadaccini | |
517 | 91c10532 | Andrea Spadaccini | def _Recv(self): |
518 | 91c10532 | Andrea Spadaccini | """Receives a message from QMP and decodes the received JSON object.
|
519 | 91c10532 | Andrea Spadaccini |
|
520 | 91c10532 | Andrea Spadaccini | @rtype: QmpMessage
|
521 | 91c10532 | Andrea Spadaccini | @return: the received message
|
522 | 91c10532 | Andrea Spadaccini | @raise errors.HypervisorError: when there are communication errors
|
523 | 91c10532 | Andrea Spadaccini | @raise errors.ProgrammerError: when there are data serialization errors
|
524 | 91c10532 | Andrea Spadaccini |
|
525 | 91c10532 | Andrea Spadaccini | """
|
526 | 91c10532 | Andrea Spadaccini | self._check_connection()
|
527 | 91c10532 | Andrea Spadaccini | |
528 | 91c10532 | Andrea Spadaccini | # Check if there is already a message in the buffer
|
529 | 91c10532 | Andrea Spadaccini | (message, self._buf) = self._ParseMessage(self._buf) |
530 | 91c10532 | Andrea Spadaccini | if message:
|
531 | 91c10532 | Andrea Spadaccini | return message
|
532 | 91c10532 | Andrea Spadaccini | |
533 | 91c10532 | Andrea Spadaccini | recv_buffer = StringIO.StringIO(self._buf)
|
534 | 91c10532 | Andrea Spadaccini | recv_buffer.seek(len(self._buf)) |
535 | 91c10532 | Andrea Spadaccini | try:
|
536 | 91c10532 | Andrea Spadaccini | while True: |
537 | 91c10532 | Andrea Spadaccini | data = self.sock.recv(4096) |
538 | 91c10532 | Andrea Spadaccini | if not data: |
539 | 91c10532 | Andrea Spadaccini | break
|
540 | 91c10532 | Andrea Spadaccini | recv_buffer.write(data) |
541 | 91c10532 | Andrea Spadaccini | |
542 | 91c10532 | Andrea Spadaccini | (message, self._buf) = self._ParseMessage(recv_buffer.getvalue()) |
543 | 91c10532 | Andrea Spadaccini | if message:
|
544 | 91c10532 | Andrea Spadaccini | return message
|
545 | 91c10532 | Andrea Spadaccini | |
546 | 91c10532 | Andrea Spadaccini | except socket.timeout, err:
|
547 | 91c10532 | Andrea Spadaccini | raise errors.HypervisorError("Timeout while receiving a QMP message: " |
548 | 91c10532 | Andrea Spadaccini | "%s" % (err))
|
549 | 91c10532 | Andrea Spadaccini | except socket.error, err:
|
550 | 91c10532 | Andrea Spadaccini | raise errors.HypervisorError("Unable to receive data from KVM using the" |
551 | 91c10532 | Andrea Spadaccini | " QMP protocol: %s" % err)
|
552 | 91c10532 | Andrea Spadaccini | |
553 | 91c10532 | Andrea Spadaccini | def _Send(self, message): |
554 | 91c10532 | Andrea Spadaccini | """Encodes and sends a message to KVM using QMP.
|
555 | 91c10532 | Andrea Spadaccini |
|
556 | 91c10532 | Andrea Spadaccini | @type message: QmpMessage
|
557 | 91c10532 | Andrea Spadaccini | @param message: message to send to KVM
|
558 | 91c10532 | Andrea Spadaccini | @raise errors.HypervisorError: when there are communication errors
|
559 | 91c10532 | Andrea Spadaccini | @raise errors.ProgrammerError: when there are data serialization errors
|
560 | 91c10532 | Andrea Spadaccini |
|
561 | 91c10532 | Andrea Spadaccini | """
|
562 | 91c10532 | Andrea Spadaccini | self._check_connection()
|
563 | 91c10532 | Andrea Spadaccini | try:
|
564 | 91c10532 | Andrea Spadaccini | message_str = str(message)
|
565 | 91c10532 | Andrea Spadaccini | except Exception, err: |
566 | 91c10532 | Andrea Spadaccini | raise errors.ProgrammerError("QMP data deserialization error: %s" % err) |
567 | 91c10532 | Andrea Spadaccini | |
568 | 91c10532 | Andrea Spadaccini | try:
|
569 | 91c10532 | Andrea Spadaccini | self.sock.sendall(message_str)
|
570 | 91c10532 | Andrea Spadaccini | except socket.timeout, err:
|
571 | 91c10532 | Andrea Spadaccini | raise errors.HypervisorError("Timeout while sending a QMP message: " |
572 | 91c10532 | Andrea Spadaccini | "%s (%s)" % (err.string, err.errno))
|
573 | 91c10532 | Andrea Spadaccini | except socket.error, err:
|
574 | 91c10532 | Andrea Spadaccini | raise errors.HypervisorError("Unable to send data from KVM using the" |
575 | 91c10532 | Andrea Spadaccini | " QMP protocol: %s" % err)
|
576 | 91c10532 | Andrea Spadaccini | |
577 | 91c10532 | Andrea Spadaccini | def Execute(self, command, arguments=None): |
578 | 91c10532 | Andrea Spadaccini | """Executes a QMP command and returns the response of the server.
|
579 | 91c10532 | Andrea Spadaccini |
|
580 | 91c10532 | Andrea Spadaccini | @type command: str
|
581 | 91c10532 | Andrea Spadaccini | @param command: the command to execute
|
582 | 91c10532 | Andrea Spadaccini | @type arguments: dict
|
583 | 91c10532 | Andrea Spadaccini | @param arguments: dictionary of arguments to be passed to the command
|
584 | 91c10532 | Andrea Spadaccini | @rtype: dict
|
585 | 91c10532 | Andrea Spadaccini | @return: dictionary representing the received JSON object
|
586 | 91c10532 | Andrea Spadaccini | @raise errors.HypervisorError: when there are communication errors
|
587 | 91c10532 | Andrea Spadaccini | @raise errors.ProgrammerError: when there are data serialization errors
|
588 | 91c10532 | Andrea Spadaccini |
|
589 | 91c10532 | Andrea Spadaccini | """
|
590 | 91c10532 | Andrea Spadaccini | self._check_connection()
|
591 | 91c10532 | Andrea Spadaccini | message = QmpMessage({self._EXECUTE_KEY: command})
|
592 | 91c10532 | Andrea Spadaccini | if arguments:
|
593 | 91c10532 | Andrea Spadaccini | message[self._ARGUMENTS_KEY] = arguments
|
594 | 91c10532 | Andrea Spadaccini | self._Send(message)
|
595 | 91c10532 | Andrea Spadaccini | |
596 | 91c10532 | Andrea Spadaccini | # Events can occur between the sending of the command and the reception
|
597 | 91c10532 | Andrea Spadaccini | # of the response, so we need to filter out messages with the event key.
|
598 | 91c10532 | Andrea Spadaccini | while True: |
599 | 91c10532 | Andrea Spadaccini | response = self._Recv()
|
600 | 91c10532 | Andrea Spadaccini | err = response[self._ERROR_KEY]
|
601 | 91c10532 | Andrea Spadaccini | if err:
|
602 | 91c10532 | Andrea Spadaccini | raise errors.HypervisorError("kvm: error executing the %s" |
603 | 91c10532 | Andrea Spadaccini | " command: %s (%s, %s):" %
|
604 | 91c10532 | Andrea Spadaccini | (command, |
605 | 91c10532 | Andrea Spadaccini | err[self._ERROR_DESC_KEY],
|
606 | 91c10532 | Andrea Spadaccini | err[self._ERROR_CLASS_KEY],
|
607 | 91c10532 | Andrea Spadaccini | err[self._ERROR_DATA_KEY]))
|
608 | 91c10532 | Andrea Spadaccini | |
609 | 91c10532 | Andrea Spadaccini | elif not response[self._EVENT_KEY]: |
610 | 91c10532 | Andrea Spadaccini | return response
|
611 | 91c10532 | Andrea Spadaccini | |
612 | 91c10532 | Andrea Spadaccini | |
613 | eb58f9b1 | Guido Trotter | class KVMHypervisor(hv_base.BaseHypervisor): |
614 | 65107a2f | Michael Hanselmann | """KVM hypervisor interface
|
615 | 65107a2f | Michael Hanselmann |
|
616 | 65107a2f | Michael Hanselmann | """
|
617 | d271c6fd | Iustin Pop | CAN_MIGRATE = True
|
618 | eb58f9b1 | Guido Trotter | |
619 | 9d9bded1 | Michael Hanselmann | _ROOT_DIR = pathutils.RUN_DIR + "/kvm-hypervisor"
|
620 | a1d79fc6 | Guido Trotter | _PIDS_DIR = _ROOT_DIR + "/pid" # contains live instances pids |
621 | 7548396c | Guido Trotter | _UIDS_DIR = _ROOT_DIR + "/uid" # contains instances reserved uids |
622 | a1d79fc6 | Guido Trotter | _CTRL_DIR = _ROOT_DIR + "/ctrl" # contains instances control sockets |
623 | a1d79fc6 | Guido Trotter | _CONF_DIR = _ROOT_DIR + "/conf" # contains instances startup data |
624 | 5d9bfd87 | Apollon Oikonomopoulos | _NICS_DIR = _ROOT_DIR + "/nic" # contains instances nic <-> tap associations |
625 | 4f580fef | Sรฉbastien Bocahu | _KEYMAP_DIR = _ROOT_DIR + "/keymap" # contains instances keymaps |
626 | 547a63b7 | Balazs Lecz | # KVM instances with chroot enabled are started in empty chroot directories.
|
627 | 547a63b7 | Balazs Lecz | _CHROOT_DIR = _ROOT_DIR + "/chroot" # for empty chroot directories |
628 | 547a63b7 | Balazs Lecz | # After an instance is stopped, its chroot directory is removed.
|
629 | 547a63b7 | Balazs Lecz | # If the chroot directory is not empty, it can't be removed.
|
630 | 547a63b7 | Balazs Lecz | # A non-empty chroot directory indicates a possible security incident.
|
631 | 547a63b7 | Balazs Lecz | # To support forensics, the non-empty chroot directory is quarantined in
|
632 | 547a63b7 | Balazs Lecz | # a separate directory, called 'chroot-quarantine'.
|
633 | 547a63b7 | Balazs Lecz | _CHROOT_QUARANTINE_DIR = _ROOT_DIR + "/chroot-quarantine"
|
634 | 5d9bfd87 | Apollon Oikonomopoulos | _DIRS = [_ROOT_DIR, _PIDS_DIR, _UIDS_DIR, _CTRL_DIR, _CONF_DIR, _NICS_DIR, |
635 | 2911f46c | Iustin Pop | _CHROOT_DIR, _CHROOT_QUARANTINE_DIR, _KEYMAP_DIR] |
636 | eb58f9b1 | Guido Trotter | |
637 | 205ab586 | Iustin Pop | PARAMETERS = { |
638 | 4b9638dc | Guido Trotter | constants.HV_KVM_PATH: hv_base.REQ_FILE_CHECK, |
639 | 205ab586 | Iustin Pop | constants.HV_KERNEL_PATH: hv_base.OPT_FILE_CHECK, |
640 | 205ab586 | Iustin Pop | constants.HV_INITRD_PATH: hv_base.OPT_FILE_CHECK, |
641 | 205ab586 | Iustin Pop | constants.HV_ROOT_PATH: hv_base.NO_CHECK, |
642 | 205ab586 | Iustin Pop | constants.HV_KERNEL_ARGS: hv_base.NO_CHECK, |
643 | 205ab586 | Iustin Pop | constants.HV_ACPI: hv_base.NO_CHECK, |
644 | 205ab586 | Iustin Pop | constants.HV_SERIAL_CONSOLE: hv_base.NO_CHECK, |
645 | 14fd6c81 | Guido Trotter | constants.HV_SERIAL_SPEED: hv_base.NO_CHECK, |
646 | d73ef63f | Michael Hanselmann | constants.HV_VNC_BIND_ADDRESS: |
647 | 8b312c1d | Manuel Franceschini | (False, lambda x: (netutils.IP4Address.IsValid(x) or |
648 | 8b312c1d | Manuel Franceschini | utils.IsNormAbsPath(x)), |
649 | afa9bb2e | Michael Hanselmann | "The VNC bind address must be either a valid IP address or an absolute"
|
650 | d73ef63f | Michael Hanselmann | " pathname", None, None), |
651 | 205ab586 | Iustin Pop | constants.HV_VNC_TLS: hv_base.NO_CHECK, |
652 | 205ab586 | Iustin Pop | constants.HV_VNC_X509: hv_base.OPT_DIR_CHECK, |
653 | 205ab586 | Iustin Pop | constants.HV_VNC_X509_VERIFY: hv_base.NO_CHECK, |
654 | 6e6bb8d5 | Guido Trotter | constants.HV_VNC_PASSWORD_FILE: hv_base.OPT_FILE_CHECK, |
655 | b1cb62bd | Andrea Spadaccini | constants.HV_KVM_SPICE_BIND: hv_base.NO_CHECK, # will be checked later
|
656 | b1cb62bd | Andrea Spadaccini | constants.HV_KVM_SPICE_IP_VERSION: |
657 | b1cb62bd | Andrea Spadaccini | (False, lambda x: (x == constants.IFACE_NO_IP_VERSION_SPECIFIED or |
658 | b1cb62bd | Andrea Spadaccini | x in constants.VALID_IP_VERSIONS),
|
659 | afa9bb2e | Michael Hanselmann | "The SPICE IP version should be 4 or 6",
|
660 | b1cb62bd | Andrea Spadaccini | None, None), |
661 | b451c4c7 | Andrea Spadaccini | constants.HV_KVM_SPICE_PASSWORD_FILE: hv_base.OPT_FILE_CHECK, |
662 | ea064d24 | Andrea Spadaccini | constants.HV_KVM_SPICE_LOSSLESS_IMG_COMPR: |
663 | 5ae4945a | Iustin Pop | hv_base.ParamInSet( |
664 | 5ae4945a | Iustin Pop | False, constants.HT_KVM_SPICE_VALID_LOSSLESS_IMG_COMPR_OPTIONS),
|
665 | ea064d24 | Andrea Spadaccini | constants.HV_KVM_SPICE_JPEG_IMG_COMPR: |
666 | 5ae4945a | Iustin Pop | hv_base.ParamInSet( |
667 | 5ae4945a | Iustin Pop | False, constants.HT_KVM_SPICE_VALID_LOSSY_IMG_COMPR_OPTIONS),
|
668 | ea064d24 | Andrea Spadaccini | constants.HV_KVM_SPICE_ZLIB_GLZ_IMG_COMPR: |
669 | 5ae4945a | Iustin Pop | hv_base.ParamInSet( |
670 | 5ae4945a | Iustin Pop | False, constants.HT_KVM_SPICE_VALID_LOSSY_IMG_COMPR_OPTIONS),
|
671 | ea064d24 | Andrea Spadaccini | constants.HV_KVM_SPICE_STREAMING_VIDEO_DETECTION: |
672 | 5ae4945a | Iustin Pop | hv_base.ParamInSet( |
673 | 5ae4945a | Iustin Pop | False, constants.HT_KVM_SPICE_VALID_VIDEO_STREAM_DETECTION_OPTIONS),
|
674 | ea064d24 | Andrea Spadaccini | constants.HV_KVM_SPICE_AUDIO_COMPR: hv_base.NO_CHECK, |
675 | bfe86c76 | Andrea Spadaccini | constants.HV_KVM_SPICE_USE_TLS: hv_base.NO_CHECK, |
676 | 3e40b587 | Andrea Spadaccini | constants.HV_KVM_SPICE_TLS_CIPHERS: hv_base.NO_CHECK, |
677 | 3e40b587 | Andrea Spadaccini | constants.HV_KVM_SPICE_USE_VDAGENT: hv_base.NO_CHECK, |
678 | cc130cc7 | Marco Casavecchia | constants.HV_KVM_FLOPPY_IMAGE_PATH: hv_base.OPT_FILE_CHECK, |
679 | 205ab586 | Iustin Pop | constants.HV_CDROM_IMAGE_PATH: hv_base.OPT_FILE_CHECK, |
680 | cc130cc7 | Marco Casavecchia | constants.HV_KVM_CDROM2_IMAGE_PATH: hv_base.OPT_FILE_CHECK, |
681 | d73ef63f | Michael Hanselmann | constants.HV_BOOT_ORDER: |
682 | d73ef63f | Michael Hanselmann | hv_base.ParamInSet(True, constants.HT_KVM_VALID_BO_TYPES),
|
683 | d73ef63f | Michael Hanselmann | constants.HV_NIC_TYPE: |
684 | d73ef63f | Michael Hanselmann | hv_base.ParamInSet(True, constants.HT_KVM_VALID_NIC_TYPES),
|
685 | d73ef63f | Michael Hanselmann | constants.HV_DISK_TYPE: |
686 | d73ef63f | Michael Hanselmann | hv_base.ParamInSet(True, constants.HT_KVM_VALID_DISK_TYPES),
|
687 | cc130cc7 | Marco Casavecchia | constants.HV_KVM_CDROM_DISK_TYPE: |
688 | cc130cc7 | Marco Casavecchia | hv_base.ParamInSet(False, constants.HT_KVM_VALID_DISK_TYPES),
|
689 | d73ef63f | Michael Hanselmann | constants.HV_USB_MOUSE: |
690 | d73ef63f | Michael Hanselmann | hv_base.ParamInSet(False, constants.HT_KVM_VALID_MOUSE_TYPES),
|
691 | 4f580fef | Sรฉbastien Bocahu | constants.HV_KEYMAP: hv_base.NO_CHECK, |
692 | e2d14329 | Andrea Spadaccini | constants.HV_MIGRATION_PORT: hv_base.REQ_NET_PORT_CHECK, |
693 | 2c368f28 | Guido Trotter | constants.HV_MIGRATION_BANDWIDTH: hv_base.REQ_NONNEGATIVE_INT_CHECK, |
694 | 2c368f28 | Guido Trotter | constants.HV_MIGRATION_DOWNTIME: hv_base.REQ_NONNEGATIVE_INT_CHECK, |
695 | 783a6c0b | Iustin Pop | constants.HV_MIGRATION_MODE: hv_base.MIGRATION_MODE_CHECK, |
696 | 6b970cef | Jun Futagawa | constants.HV_USE_LOCALTIME: hv_base.NO_CHECK, |
697 | 19572932 | Iustin Pop | constants.HV_DISK_CACHE: |
698 | 19572932 | Iustin Pop | hv_base.ParamInSet(True, constants.HT_VALID_CACHE_TYPES),
|
699 | d19d94db | Guido Trotter | constants.HV_SECURITY_MODEL: |
700 | d19d94db | Guido Trotter | hv_base.ParamInSet(True, constants.HT_KVM_VALID_SM_TYPES),
|
701 | d19d94db | Guido Trotter | constants.HV_SECURITY_DOMAIN: hv_base.NO_CHECK, |
702 | 7ba594c0 | Guido Trotter | constants.HV_KVM_FLAG: |
703 | 7ba594c0 | Guido Trotter | hv_base.ParamInSet(False, constants.HT_KVM_FLAG_VALUES),
|
704 | fbe27e2b | Guido Trotter | constants.HV_VHOST_NET: hv_base.NO_CHECK, |
705 | 547a63b7 | Balazs Lecz | constants.HV_KVM_USE_CHROOT: hv_base.NO_CHECK, |
706 | 4f958b0b | Miguel Di Ciurcio Filho | constants.HV_MEM_PATH: hv_base.OPT_DIR_CHECK, |
707 | 990ade2d | Stephen Shirley | constants.HV_REBOOT_BEHAVIOR: |
708 | a7f884d3 | Tsachy Shacham | hv_base.ParamInSet(True, constants.REBOOT_BEHAVIORS),
|
709 | a7f884d3 | Tsachy Shacham | constants.HV_CPU_MASK: hv_base.OPT_MULTI_CPU_MASK_CHECK, |
710 | 3c286190 | Dimitris Aragiorgis | constants.HV_CPU_TYPE: hv_base.NO_CHECK, |
711 | 2c368f28 | Guido Trotter | constants.HV_CPU_CORES: hv_base.OPT_NONNEGATIVE_INT_CHECK, |
712 | 2c368f28 | Guido Trotter | constants.HV_CPU_THREADS: hv_base.OPT_NONNEGATIVE_INT_CHECK, |
713 | 2c368f28 | Guido Trotter | constants.HV_CPU_SOCKETS: hv_base.OPT_NONNEGATIVE_INT_CHECK, |
714 | 2fddb144 | Guido Trotter | constants.HV_SOUNDHW: hv_base.NO_CHECK, |
715 | 156681c1 | Guido Trotter | constants.HV_USB_DEVICES: hv_base.NO_CHECK, |
716 | 7589346f | Guido Trotter | constants.HV_VGA: hv_base.NO_CHECK, |
717 | e6f24d89 | Guido Trotter | constants.HV_KVM_EXTRA: hv_base.NO_CHECK, |
718 | 4ab75599 | Dimitris Aragiorgis | constants.HV_KVM_MACHINE_VERSION: hv_base.NO_CHECK, |
719 | 8a534fbe | Stratos Psomdakis | constants.HV_VNET_HDR: hv_base.NO_CHECK, |
720 | 205ab586 | Iustin Pop | } |
721 | 6b5605e8 | Iustin Pop | |
722 | f0db563d | Guido Trotter | _VIRTIO = "virtio"
|
723 | f0db563d | Guido Trotter | _VIRTIO_NET_PCI = "virtio-net-pci"
|
724 | 994ccaf2 | Dimitris Aragiorgis | _VIRTIO_BLK_PCI = "virtio-blk-pci"
|
725 | f0db563d | Guido Trotter | |
726 | d0c8c01d | Iustin Pop | _MIGRATION_STATUS_RE = re.compile("Migration\s+status:\s+(\w+)",
|
727 | 30e42c4e | Guido Trotter | re.M | re.I) |
728 | 65107a2f | Michael Hanselmann | _MIGRATION_PROGRESS_RE = \ |
729 | 527c0cf7 | Michael Hanselmann | re.compile(r"\s*transferred\s+ram:\s+(?P<transferred>\d+)\s+kbytes\s*\n"
|
730 | 527c0cf7 | Michael Hanselmann | r"\s*remaining\s+ram:\s+(?P<remaining>\d+)\s+kbytes\s*\n"
|
731 | 527c0cf7 | Michael Hanselmann | r"\s*total\s+ram:\s+(?P<total>\d+)\s+kbytes\s*\n", re.I)
|
732 | 61643226 | Andrea Spadaccini | |
733 | c4e388a5 | Guido Trotter | _MIGRATION_INFO_MAX_BAD_ANSWERS = 5
|
734 | c4e388a5 | Guido Trotter | _MIGRATION_INFO_RETRY_DELAY = 2
|
735 | 30e42c4e | Guido Trotter | |
736 | 585c8187 | Guido Trotter | _VERSION_RE = re.compile(r"\b(\d+)\.(\d+)(\.(\d+))?\b")
|
737 | b52d85c1 | Guido Trotter | |
738 | b693125f | Tsachy Shacham | _CPU_INFO_RE = re.compile(r"cpu\s+\#(\d+).*thread_id\s*=\s*(\d+)", re.I)
|
739 | b693125f | Tsachy Shacham | _CPU_INFO_CMD = "info cpus"
|
740 | b693125f | Tsachy Shacham | _CONT_CMD = "cont"
|
741 | b693125f | Tsachy Shacham | |
742 | 7f83345f | Guido Trotter | _DEFAULT_MACHINE_VERSION_RE = re.compile(r"^(\S+).*\(default\)", re.M)
|
743 | 82e3bf85 | Dimitris Aragiorgis | _CHECK_MACHINE_VERSION_RE = \ |
744 | 82e3bf85 | Dimitris Aragiorgis | staticmethod(lambda x: re.compile(r"^(%s)[ ]+.*PC" % x, re.M)) |
745 | e6ba3320 | Dimitris Aragiorgis | |
746 | 0ad7f5d8 | Guido Trotter | _QMP_RE = re.compile(r"^-qmp\s", re.M)
|
747 | 0ad7f5d8 | Guido Trotter | _SPICE_RE = re.compile(r"^-spice\s", re.M)
|
748 | 0ad7f5d8 | Guido Trotter | _VHOST_RE = re.compile(r"^-net\s.*,vhost=on|off", re.M)
|
749 | 0ad7f5d8 | Guido Trotter | _ENABLE_KVM_RE = re.compile(r"^-enable-kvm\s", re.M)
|
750 | 0ad7f5d8 | Guido Trotter | _DISABLE_KVM_RE = re.compile(r"^-disable-kvm\s", re.M)
|
751 | 0ad7f5d8 | Guido Trotter | _NETDEV_RE = re.compile(r"^-netdev\s", re.M)
|
752 | 99c7cd5b | Guido Trotter | _DISPLAY_RE = re.compile(r"^-display\s", re.M)
|
753 | 8cb5634a | Guido Trotter | _MACHINE_RE = re.compile(r"^-machine\s", re.M)
|
754 | 994ccaf2 | Dimitris Aragiorgis | _VIRTIO_NET_RE = re.compile(r"^name \"%s\"" % _VIRTIO_NET_PCI, re.M)
|
755 | 994ccaf2 | Dimitris Aragiorgis | _VIRTIO_BLK_RE = re.compile(r"^name \"%s\"" % _VIRTIO_BLK_PCI, re.M)
|
756 | 0ad7f5d8 | Guido Trotter | # match -drive.*boot=on|off on different lines, but in between accept only
|
757 | 0ad7f5d8 | Guido Trotter | # dashes not preceeded by a new line (which would mean another option
|
758 | 0ad7f5d8 | Guido Trotter | # different than -drive is starting)
|
759 | 0ad7f5d8 | Guido Trotter | _BOOT_RE = re.compile(r"^-drive\s([^-]|(?<!^)-)*,boot=on\|off", re.M | re.S)
|
760 | 0ad7f5d8 | Guido Trotter | |
761 | 8b7be6f2 | Dimitris Aragiorgis | _INFO_PCI_RE = re.compile(r'Bus.*device[ ]*(\d+).*')
|
762 | 8b7be6f2 | Dimitris Aragiorgis | _INFO_PCI_CMD = "info pci"
|
763 | 8b7be6f2 | Dimitris Aragiorgis | _INFO_VERSION_RE = \ |
764 | 8b7be6f2 | Dimitris Aragiorgis | re.compile(r'^QEMU (\d+)\.(\d+)(\.(\d+))?.*monitor.*', re.M)
|
765 | 8b7be6f2 | Dimitris Aragiorgis | _INFO_VERSION_CMD = "info version"
|
766 | 8b7be6f2 | Dimitris Aragiorgis | |
767 | 8b7be6f2 | Dimitris Aragiorgis | _DEFAULT_PCI_RESERVATIONS = "11110000000000000000000000000000"
|
768 | 8b7be6f2 | Dimitris Aragiorgis | |
769 | 64bfbc08 | Guido Trotter | ANCILLARY_FILES = [ |
770 | 64bfbc08 | Guido Trotter | _KVM_NETWORK_SCRIPT, |
771 | 64bfbc08 | Guido Trotter | ] |
772 | 69ab2e12 | Guido Trotter | ANCILLARY_FILES_OPT = [ |
773 | 69ab2e12 | Guido Trotter | _KVM_NETWORK_SCRIPT, |
774 | 69ab2e12 | Guido Trotter | ] |
775 | 64bfbc08 | Guido Trotter | |
776 | 6e043e60 | Guido Trotter | # Supported kvm options to get output from
|
777 | 6e043e60 | Guido Trotter | _KVMOPT_HELP = "help"
|
778 | 6e043e60 | Guido Trotter | _KVMOPT_MLIST = "mlist"
|
779 | f0db563d | Guido Trotter | _KVMOPT_DEVICELIST = "devicelist"
|
780 | bc0fed4b | Guido Trotter | |
781 | bc0fed4b | Guido Trotter | # Command to execute to get the output from kvm, and whether to
|
782 | bc0fed4b | Guido Trotter | # accept the output even on failure.
|
783 | 6e043e60 | Guido Trotter | _KVMOPTS_CMDS = { |
784 | bc0fed4b | Guido Trotter | _KVMOPT_HELP: (["--help"], False), |
785 | bc0fed4b | Guido Trotter | _KVMOPT_MLIST: (["-M", "?"], False), |
786 | bc0fed4b | Guido Trotter | _KVMOPT_DEVICELIST: (["-device", "?"], True), |
787 | 6e043e60 | Guido Trotter | } |
788 | 6e043e60 | Guido Trotter | |
789 | eb58f9b1 | Guido Trotter | def __init__(self): |
790 | eb58f9b1 | Guido Trotter | hv_base.BaseHypervisor.__init__(self)
|
791 | eb58f9b1 | Guido Trotter | # Let's make sure the directories we need exist, even if the RUN_DIR lives
|
792 | eb58f9b1 | Guido Trotter | # in a tmpfs filesystem or has been otherwise wiped out.
|
793 | 29921401 | Iustin Pop | dirs = [(dname, constants.RUN_DIRS_MODE) for dname in self._DIRS] |
794 | 9afb67fe | Guido Trotter | utils.EnsureDirs(dirs) |
795 | eb58f9b1 | Guido Trotter | |
796 | 30786fc9 | Iustin Pop | @classmethod
|
797 | 30786fc9 | Iustin Pop | def _InstancePidFile(cls, instance_name): |
798 | 98ec75d6 | Iustin Pop | """Returns the instance pidfile.
|
799 | 98ec75d6 | Iustin Pop |
|
800 | 98ec75d6 | Iustin Pop | """
|
801 | 30786fc9 | Iustin Pop | return utils.PathJoin(cls._PIDS_DIR, instance_name)
|
802 | 98ec75d6 | Iustin Pop | |
803 | 263b8de6 | Guido Trotter | @classmethod
|
804 | 7548396c | Guido Trotter | def _InstanceUidFile(cls, instance_name): |
805 | 7548396c | Guido Trotter | """Returns the instance uidfile.
|
806 | 7548396c | Guido Trotter |
|
807 | 7548396c | Guido Trotter | """
|
808 | 7548396c | Guido Trotter | return utils.PathJoin(cls._UIDS_DIR, instance_name)
|
809 | 7548396c | Guido Trotter | |
810 | 7548396c | Guido Trotter | @classmethod
|
811 | 263b8de6 | Guido Trotter | def _InstancePidInfo(cls, pid): |
812 | 263b8de6 | Guido Trotter | """Check pid file for instance information.
|
813 | 263b8de6 | Guido Trotter |
|
814 | 263b8de6 | Guido Trotter | Check that a pid file is associated with an instance, and retrieve
|
815 | 263b8de6 | Guido Trotter | information from its command line.
|
816 | 263b8de6 | Guido Trotter |
|
817 | 263b8de6 | Guido Trotter | @type pid: string or int
|
818 | 263b8de6 | Guido Trotter | @param pid: process id of the instance to check
|
819 | 263b8de6 | Guido Trotter | @rtype: tuple
|
820 | 263b8de6 | Guido Trotter | @return: (instance_name, memory, vcpus)
|
821 | 263b8de6 | Guido Trotter | @raise errors.HypervisorError: when an instance cannot be found
|
822 | 263b8de6 | Guido Trotter |
|
823 | 263b8de6 | Guido Trotter | """
|
824 | 263b8de6 | Guido Trotter | alive = utils.IsProcessAlive(pid) |
825 | 263b8de6 | Guido Trotter | if not alive: |
826 | 263b8de6 | Guido Trotter | raise errors.HypervisorError("Cannot get info for pid %s" % pid) |
827 | 263b8de6 | Guido Trotter | |
828 | 263b8de6 | Guido Trotter | cmdline_file = utils.PathJoin("/proc", str(pid), "cmdline") |
829 | 263b8de6 | Guido Trotter | try:
|
830 | 263b8de6 | Guido Trotter | cmdline = utils.ReadFile(cmdline_file) |
831 | 263b8de6 | Guido Trotter | except EnvironmentError, err: |
832 | 263b8de6 | Guido Trotter | raise errors.HypervisorError("Can't open cmdline file for pid %s: %s" % |
833 | 263b8de6 | Guido Trotter | (pid, err)) |
834 | 263b8de6 | Guido Trotter | |
835 | 263b8de6 | Guido Trotter | instance = None
|
836 | 263b8de6 | Guido Trotter | memory = 0
|
837 | 263b8de6 | Guido Trotter | vcpus = 0
|
838 | 263b8de6 | Guido Trotter | |
839 | d0c8c01d | Iustin Pop | arg_list = cmdline.split("\x00")
|
840 | 263b8de6 | Guido Trotter | while arg_list:
|
841 | e687ec01 | Michael Hanselmann | arg = arg_list.pop(0)
|
842 | 263b8de6 | Guido Trotter | if arg == "-name": |
843 | 263b8de6 | Guido Trotter | instance = arg_list.pop(0)
|
844 | 263b8de6 | Guido Trotter | elif arg == "-m": |
845 | 263b8de6 | Guido Trotter | memory = int(arg_list.pop(0)) |
846 | 263b8de6 | Guido Trotter | elif arg == "-smp": |
847 | 4888a609 | Guido Trotter | vcpus = int(arg_list.pop(0).split(",")[0]) |
848 | 263b8de6 | Guido Trotter | |
849 | 263b8de6 | Guido Trotter | if instance is None: |
850 | 263b8de6 | Guido Trotter | raise errors.HypervisorError("Pid %s doesn't contain a ganeti kvm" |
851 | 263b8de6 | Guido Trotter | " instance" % pid)
|
852 | 263b8de6 | Guido Trotter | |
853 | 263b8de6 | Guido Trotter | return (instance, memory, vcpus)
|
854 | 263b8de6 | Guido Trotter | |
855 | 1f8b3a27 | Guido Trotter | def _InstancePidAlive(self, instance_name): |
856 | 263b8de6 | Guido Trotter | """Returns the instance pidfile, pid, and liveness.
|
857 | 263b8de6 | Guido Trotter |
|
858 | 263b8de6 | Guido Trotter | @type instance_name: string
|
859 | 263b8de6 | Guido Trotter | @param instance_name: instance name
|
860 | 263b8de6 | Guido Trotter | @rtype: tuple
|
861 | 263b8de6 | Guido Trotter | @return: (pid file name, pid, liveness)
|
862 | 1f8b3a27 | Guido Trotter |
|
863 | 1f8b3a27 | Guido Trotter | """
|
864 | 98ec75d6 | Iustin Pop | pidfile = self._InstancePidFile(instance_name)
|
865 | 1f8b3a27 | Guido Trotter | pid = utils.ReadPidFile(pidfile) |
866 | 263b8de6 | Guido Trotter | |
867 | 263b8de6 | Guido Trotter | alive = False
|
868 | 263b8de6 | Guido Trotter | try:
|
869 | 263b8de6 | Guido Trotter | cmd_instance = self._InstancePidInfo(pid)[0] |
870 | 263b8de6 | Guido Trotter | alive = (cmd_instance == instance_name) |
871 | 263b8de6 | Guido Trotter | except errors.HypervisorError:
|
872 | 263b8de6 | Guido Trotter | pass
|
873 | 1f8b3a27 | Guido Trotter | |
874 | 1f8b3a27 | Guido Trotter | return (pidfile, pid, alive)
|
875 | 1f8b3a27 | Guido Trotter | |
876 | 5905901c | Iustin Pop | def _CheckDown(self, instance_name): |
877 | 5905901c | Iustin Pop | """Raises an error unless the given instance is down.
|
878 | 5905901c | Iustin Pop |
|
879 | 5905901c | Iustin Pop | """
|
880 | 5905901c | Iustin Pop | alive = self._InstancePidAlive(instance_name)[2] |
881 | 5905901c | Iustin Pop | if alive:
|
882 | 5905901c | Iustin Pop | raise errors.HypervisorError("Failed to start instance %s: %s" % |
883 | 5905901c | Iustin Pop | (instance_name, "already running"))
|
884 | 5905901c | Iustin Pop | |
885 | 0df4d98a | Guido Trotter | @classmethod
|
886 | 0df4d98a | Guido Trotter | def _InstanceMonitor(cls, instance_name): |
887 | c4fbefc8 | Guido Trotter | """Returns the instance monitor socket name
|
888 | c4fbefc8 | Guido Trotter |
|
889 | c4fbefc8 | Guido Trotter | """
|
890 | 30786fc9 | Iustin Pop | return utils.PathJoin(cls._CTRL_DIR, "%s.monitor" % instance_name) |
891 | c4fbefc8 | Guido Trotter | |
892 | 0df4d98a | Guido Trotter | @classmethod
|
893 | 0df4d98a | Guido Trotter | def _InstanceSerial(cls, instance_name): |
894 | c4fbefc8 | Guido Trotter | """Returns the instance serial socket name
|
895 | c4fbefc8 | Guido Trotter |
|
896 | c4fbefc8 | Guido Trotter | """
|
897 | 30786fc9 | Iustin Pop | return utils.PathJoin(cls._CTRL_DIR, "%s.serial" % instance_name) |
898 | c4fbefc8 | Guido Trotter | |
899 | 91c10532 | Andrea Spadaccini | @classmethod
|
900 | 91c10532 | Andrea Spadaccini | def _InstanceQmpMonitor(cls, instance_name): |
901 | 91c10532 | Andrea Spadaccini | """Returns the instance serial QMP socket name
|
902 | 91c10532 | Andrea Spadaccini |
|
903 | 91c10532 | Andrea Spadaccini | """
|
904 | 91c10532 | Andrea Spadaccini | return utils.PathJoin(cls._CTRL_DIR, "%s.qmp" % instance_name) |
905 | 91c10532 | Andrea Spadaccini | |
906 | 86d6bc2a | Guido Trotter | @staticmethod
|
907 | 86d6bc2a | Guido Trotter | def _SocatUnixConsoleParams(): |
908 | 86d6bc2a | Guido Trotter | """Returns the correct parameters for socat
|
909 | 86d6bc2a | Guido Trotter |
|
910 | 86d6bc2a | Guido Trotter | If we have a new-enough socat we can use raw mode with an escape character.
|
911 | 86d6bc2a | Guido Trotter |
|
912 | 86d6bc2a | Guido Trotter | """
|
913 | fe5b0c42 | Michael Hanselmann | if constants.SOCAT_USE_ESCAPE:
|
914 | 86d6bc2a | Guido Trotter | return "raw,echo=0,escape=%s" % constants.SOCAT_ESCAPE_CODE |
915 | 86d6bc2a | Guido Trotter | else:
|
916 | 86d6bc2a | Guido Trotter | return "echo=0,icanon=0" |
917 | 86d6bc2a | Guido Trotter | |
918 | 0df4d98a | Guido Trotter | @classmethod
|
919 | 0df4d98a | Guido Trotter | def _InstanceKVMRuntime(cls, instance_name): |
920 | 38e250ba | Guido Trotter | """Returns the instance KVM runtime filename
|
921 | 38e250ba | Guido Trotter |
|
922 | 38e250ba | Guido Trotter | """
|
923 | 30786fc9 | Iustin Pop | return utils.PathJoin(cls._CONF_DIR, "%s.runtime" % instance_name) |
924 | 38e250ba | Guido Trotter | |
925 | 7e66c35b | Guido Trotter | @classmethod
|
926 | 547a63b7 | Balazs Lecz | def _InstanceChrootDir(cls, instance_name): |
927 | 547a63b7 | Balazs Lecz | """Returns the name of the KVM chroot dir of the instance
|
928 | 547a63b7 | Balazs Lecz |
|
929 | 547a63b7 | Balazs Lecz | """
|
930 | 547a63b7 | Balazs Lecz | return utils.PathJoin(cls._CHROOT_DIR, instance_name)
|
931 | 547a63b7 | Balazs Lecz | |
932 | 547a63b7 | Balazs Lecz | @classmethod
|
933 | 5d9bfd87 | Apollon Oikonomopoulos | def _InstanceNICDir(cls, instance_name): |
934 | 5d9bfd87 | Apollon Oikonomopoulos | """Returns the name of the directory holding the tap device files for a
|
935 | 5d9bfd87 | Apollon Oikonomopoulos | given instance.
|
936 | 5d9bfd87 | Apollon Oikonomopoulos |
|
937 | 5d9bfd87 | Apollon Oikonomopoulos | """
|
938 | 5d9bfd87 | Apollon Oikonomopoulos | return utils.PathJoin(cls._NICS_DIR, instance_name)
|
939 | 5d9bfd87 | Apollon Oikonomopoulos | |
940 | 5d9bfd87 | Apollon Oikonomopoulos | @classmethod
|
941 | 5d9bfd87 | Apollon Oikonomopoulos | def _InstanceNICFile(cls, instance_name, seq): |
942 | 5d9bfd87 | Apollon Oikonomopoulos | """Returns the name of the file containing the tap device for a given NIC
|
943 | 5d9bfd87 | Apollon Oikonomopoulos |
|
944 | 5d9bfd87 | Apollon Oikonomopoulos | """
|
945 | 5d9bfd87 | Apollon Oikonomopoulos | return utils.PathJoin(cls._InstanceNICDir(instance_name), str(seq)) |
946 | 5d9bfd87 | Apollon Oikonomopoulos | |
947 | 5d9bfd87 | Apollon Oikonomopoulos | @classmethod
|
948 | 4f580fef | Sรฉbastien Bocahu | def _InstanceKeymapFile(cls, instance_name): |
949 | 4f580fef | Sรฉbastien Bocahu | """Returns the name of the file containing the keymap for a given instance
|
950 | 4f580fef | Sรฉbastien Bocahu |
|
951 | 4f580fef | Sรฉbastien Bocahu | """
|
952 | 4f580fef | Sรฉbastien Bocahu | return utils.PathJoin(cls._KEYMAP_DIR, instance_name)
|
953 | 4f580fef | Sรฉbastien Bocahu | |
954 | 4f580fef | Sรฉbastien Bocahu | @classmethod
|
955 | 7548396c | Guido Trotter | def _TryReadUidFile(cls, uid_file): |
956 | 7548396c | Guido Trotter | """Try to read a uid file
|
957 | 7548396c | Guido Trotter |
|
958 | 7548396c | Guido Trotter | """
|
959 | 7548396c | Guido Trotter | if os.path.exists(uid_file):
|
960 | 7548396c | Guido Trotter | try:
|
961 | 682f7601 | Guido Trotter | uid = int(utils.ReadOneLineFile(uid_file))
|
962 | aa0b600b | Guido Trotter | return uid
|
963 | 7548396c | Guido Trotter | except EnvironmentError: |
964 | 7548396c | Guido Trotter | logging.warning("Can't read uid file", exc_info=True) |
965 | 7548396c | Guido Trotter | except (TypeError, ValueError): |
966 | 7548396c | Guido Trotter | logging.warning("Can't parse uid file contents", exc_info=True) |
967 | aa0b600b | Guido Trotter | return None |
968 | 7548396c | Guido Trotter | |
969 | 7548396c | Guido Trotter | @classmethod
|
970 | 7e66c35b | Guido Trotter | def _RemoveInstanceRuntimeFiles(cls, pidfile, instance_name): |
971 | 547a63b7 | Balazs Lecz | """Removes an instance's rutime sockets/files/dirs.
|
972 | 7e66c35b | Guido Trotter |
|
973 | 7e66c35b | Guido Trotter | """
|
974 | 7e66c35b | Guido Trotter | utils.RemoveFile(pidfile) |
975 | 7e66c35b | Guido Trotter | utils.RemoveFile(cls._InstanceMonitor(instance_name)) |
976 | 7e66c35b | Guido Trotter | utils.RemoveFile(cls._InstanceSerial(instance_name)) |
977 | 91c10532 | Andrea Spadaccini | utils.RemoveFile(cls._InstanceQmpMonitor(instance_name)) |
978 | 7e66c35b | Guido Trotter | utils.RemoveFile(cls._InstanceKVMRuntime(instance_name)) |
979 | 4f580fef | Sรฉbastien Bocahu | utils.RemoveFile(cls._InstanceKeymapFile(instance_name)) |
980 | 7548396c | Guido Trotter | uid_file = cls._InstanceUidFile(instance_name) |
981 | 7548396c | Guido Trotter | uid = cls._TryReadUidFile(uid_file) |
982 | 7548396c | Guido Trotter | utils.RemoveFile(uid_file) |
983 | 7548396c | Guido Trotter | if uid is not None: |
984 | 7548396c | Guido Trotter | uidpool.ReleaseUid(uid) |
985 | 7be85163 | Guido Trotter | try:
|
986 | 7be85163 | Guido Trotter | shutil.rmtree(cls._InstanceNICDir(instance_name)) |
987 | 7be85163 | Guido Trotter | except OSError, err: |
988 | 7be85163 | Guido Trotter | if err.errno != errno.ENOENT:
|
989 | 7be85163 | Guido Trotter | raise
|
990 | 547a63b7 | Balazs Lecz | try:
|
991 | 547a63b7 | Balazs Lecz | chroot_dir = cls._InstanceChrootDir(instance_name) |
992 | 547a63b7 | Balazs Lecz | utils.RemoveDir(chroot_dir) |
993 | 547a63b7 | Balazs Lecz | except OSError, err: |
994 | 547a63b7 | Balazs Lecz | if err.errno == errno.ENOTEMPTY:
|
995 | 547a63b7 | Balazs Lecz | # The chroot directory is expected to be empty, but it isn't.
|
996 | 547a63b7 | Balazs Lecz | new_chroot_dir = tempfile.mkdtemp(dir=cls._CHROOT_QUARANTINE_DIR, |
997 | 547a63b7 | Balazs Lecz | prefix="%s-%s-" %
|
998 | 547a63b7 | Balazs Lecz | (instance_name, |
999 | 547a63b7 | Balazs Lecz | utils.TimestampForFilename())) |
1000 | 547a63b7 | Balazs Lecz | logging.warning("The chroot directory of instance %s can not be"
|
1001 | 547a63b7 | Balazs Lecz | " removed as it is not empty. Moving it to the"
|
1002 | 547a63b7 | Balazs Lecz | " quarantine instead. Please investigate the"
|
1003 | 547a63b7 | Balazs Lecz | " contents (%s) and clean up manually",
|
1004 | 547a63b7 | Balazs Lecz | instance_name, new_chroot_dir) |
1005 | 547a63b7 | Balazs Lecz | utils.RenameFile(chroot_dir, new_chroot_dir) |
1006 | 547a63b7 | Balazs Lecz | else:
|
1007 | 547a63b7 | Balazs Lecz | raise
|
1008 | 7e66c35b | Guido Trotter | |
1009 | 748e4b5a | Michael Hanselmann | @staticmethod
|
1010 | 5d9bfd87 | Apollon Oikonomopoulos | def _ConfigureNIC(instance, seq, nic, tap): |
1011 | 5d9bfd87 | Apollon Oikonomopoulos | """Run the network configuration script for a specified NIC
|
1012 | eb58f9b1 | Guido Trotter |
|
1013 | eb58f9b1 | Guido Trotter | @param instance: instance we're acting on
|
1014 | eb58f9b1 | Guido Trotter | @type instance: instance object
|
1015 | eb58f9b1 | Guido Trotter | @param seq: nic sequence number
|
1016 | eb58f9b1 | Guido Trotter | @type seq: int
|
1017 | eb58f9b1 | Guido Trotter | @param nic: nic we're acting on
|
1018 | eb58f9b1 | Guido Trotter | @type nic: nic object
|
1019 | 5d9bfd87 | Apollon Oikonomopoulos | @param tap: the host's tap interface this NIC corresponds to
|
1020 | 5d9bfd87 | Apollon Oikonomopoulos | @type tap: str
|
1021 | eb58f9b1 | Guido Trotter |
|
1022 | eb58f9b1 | Guido Trotter | """
|
1023 | 5d9bfd87 | Apollon Oikonomopoulos | env = { |
1024 | 5d9bfd87 | Apollon Oikonomopoulos | "PATH": "%s:/sbin:/usr/sbin" % os.environ["PATH"], |
1025 | 5d9bfd87 | Apollon Oikonomopoulos | "INSTANCE": instance.name,
|
1026 | 5d9bfd87 | Apollon Oikonomopoulos | "MAC": nic.mac,
|
1027 | 5d9bfd87 | Apollon Oikonomopoulos | "MODE": nic.nicparams[constants.NIC_MODE],
|
1028 | 5d9bfd87 | Apollon Oikonomopoulos | "INTERFACE": tap,
|
1029 | 5d9bfd87 | Apollon Oikonomopoulos | "INTERFACE_INDEX": str(seq), |
1030 | 6ba0093c | Dimitris Aragiorgis | "INTERFACE_UUID": nic.uuid,
|
1031 | 7d4ae909 | Dimitris Aragiorgis | "TAGS": " ".join(instance.GetTags()), |
1032 | 5d9bfd87 | Apollon Oikonomopoulos | } |
1033 | 5d9bfd87 | Apollon Oikonomopoulos | |
1034 | 5d9bfd87 | Apollon Oikonomopoulos | if nic.ip:
|
1035 | 5d9bfd87 | Apollon Oikonomopoulos | env["IP"] = nic.ip
|
1036 | 5d9bfd87 | Apollon Oikonomopoulos | |
1037 | 6ba0093c | Dimitris Aragiorgis | if nic.name:
|
1038 | 6ba0093c | Dimitris Aragiorgis | env["INTERFACE_NAME"] = nic.name
|
1039 | 6ba0093c | Dimitris Aragiorgis | |
1040 | 5d9bfd87 | Apollon Oikonomopoulos | if nic.nicparams[constants.NIC_LINK]:
|
1041 | 5d9bfd87 | Apollon Oikonomopoulos | env["LINK"] = nic.nicparams[constants.NIC_LINK]
|
1042 | 5d9bfd87 | Apollon Oikonomopoulos | |
1043 | a5ad5e58 | Apollon Oikonomopoulos | if nic.network:
|
1044 | cbe4a0a5 | Dimitris Aragiorgis | n = objects.Network.FromDict(nic.netinfo) |
1045 | 7e8f03e3 | Dimitris Aragiorgis | env.update(n.HooksDict()) |
1046 | a5ad5e58 | Apollon Oikonomopoulos | |
1047 | 5d9bfd87 | Apollon Oikonomopoulos | if nic.nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
|
1048 | 5d9bfd87 | Apollon Oikonomopoulos | env["BRIDGE"] = nic.nicparams[constants.NIC_LINK]
|
1049 | 5d9bfd87 | Apollon Oikonomopoulos | |
1050 | 9d9bded1 | Michael Hanselmann | result = utils.RunCmd([pathutils.KVM_IFUP, tap], env=env) |
1051 | 5d9bfd87 | Apollon Oikonomopoulos | if result.failed:
|
1052 | afa9bb2e | Michael Hanselmann | raise errors.HypervisorError("Failed to configure interface %s: %s;" |
1053 | afa9bb2e | Michael Hanselmann | " network configuration script output: %s" %
|
1054 | 5d9bfd87 | Apollon Oikonomopoulos | (tap, result.fail_reason, result.output)) |
1055 | eb58f9b1 | Guido Trotter | |
1056 | b693125f | Tsachy Shacham | @staticmethod
|
1057 | b693125f | Tsachy Shacham | def _VerifyAffinityPackage(): |
1058 | b693125f | Tsachy Shacham | if affinity is None: |
1059 | b693125f | Tsachy Shacham | raise errors.HypervisorError("affinity Python package not" |
1060 | 5ae4945a | Iustin Pop | " found; cannot use CPU pinning under KVM")
|
1061 | b693125f | Tsachy Shacham | |
1062 | b693125f | Tsachy Shacham | @staticmethod
|
1063 | b693125f | Tsachy Shacham | def _BuildAffinityCpuMask(cpu_list): |
1064 | b693125f | Tsachy Shacham | """Create a CPU mask suitable for sched_setaffinity from a list of
|
1065 | b693125f | Tsachy Shacham | CPUs.
|
1066 | b693125f | Tsachy Shacham |
|
1067 | b693125f | Tsachy Shacham | See man taskset for more info on sched_setaffinity masks.
|
1068 | b693125f | Tsachy Shacham | For example: [ 0, 2, 5, 6 ] will return 101 (0x65, 0..01100101).
|
1069 | b693125f | Tsachy Shacham |
|
1070 | b693125f | Tsachy Shacham | @type cpu_list: list of int
|
1071 | b693125f | Tsachy Shacham | @param cpu_list: list of physical CPU numbers to map to vCPUs in order
|
1072 | b693125f | Tsachy Shacham | @rtype: int
|
1073 | b693125f | Tsachy Shacham | @return: a bit mask of CPU affinities
|
1074 | b693125f | Tsachy Shacham |
|
1075 | b693125f | Tsachy Shacham | """
|
1076 | b693125f | Tsachy Shacham | if cpu_list == constants.CPU_PINNING_OFF:
|
1077 | b693125f | Tsachy Shacham | return constants.CPU_PINNING_ALL_KVM
|
1078 | b693125f | Tsachy Shacham | else:
|
1079 | b693125f | Tsachy Shacham | return sum(2 ** cpu for cpu in cpu_list) |
1080 | b693125f | Tsachy Shacham | |
1081 | b693125f | Tsachy Shacham | @classmethod
|
1082 | b693125f | Tsachy Shacham | def _AssignCpuAffinity(cls, cpu_mask, process_id, thread_dict): |
1083 | b693125f | Tsachy Shacham | """Change CPU affinity for running VM according to given CPU mask.
|
1084 | b693125f | Tsachy Shacham |
|
1085 | b693125f | Tsachy Shacham | @param cpu_mask: CPU mask as given by the user. e.g. "0-2,4:all:1,3"
|
1086 | b693125f | Tsachy Shacham | @type cpu_mask: string
|
1087 | b693125f | Tsachy Shacham | @param process_id: process ID of KVM process. Used to pin entire VM
|
1088 | b693125f | Tsachy Shacham | to physical CPUs.
|
1089 | b693125f | Tsachy Shacham | @type process_id: int
|
1090 | b693125f | Tsachy Shacham | @param thread_dict: map of virtual CPUs to KVM thread IDs
|
1091 | b693125f | Tsachy Shacham | @type thread_dict: dict int:int
|
1092 | b693125f | Tsachy Shacham |
|
1093 | b693125f | Tsachy Shacham | """
|
1094 | b693125f | Tsachy Shacham | # Convert the string CPU mask to a list of list of int's
|
1095 | b693125f | Tsachy Shacham | cpu_list = utils.ParseMultiCpuMask(cpu_mask) |
1096 | b693125f | Tsachy Shacham | |
1097 | b693125f | Tsachy Shacham | if len(cpu_list) == 1: |
1098 | b693125f | Tsachy Shacham | all_cpu_mapping = cpu_list[0]
|
1099 | b693125f | Tsachy Shacham | if all_cpu_mapping == constants.CPU_PINNING_OFF:
|
1100 | b693125f | Tsachy Shacham | # If CPU pinning has 1 entry that's "all", then do nothing
|
1101 | b693125f | Tsachy Shacham | pass
|
1102 | b693125f | Tsachy Shacham | else:
|
1103 | b693125f | Tsachy Shacham | # If CPU pinning has one non-all entry, map the entire VM to
|
1104 | b693125f | Tsachy Shacham | # one set of physical CPUs
|
1105 | b693125f | Tsachy Shacham | cls._VerifyAffinityPackage() |
1106 | 5ae4945a | Iustin Pop | affinity.set_process_affinity_mask( |
1107 | 5ae4945a | Iustin Pop | process_id, cls._BuildAffinityCpuMask(all_cpu_mapping)) |
1108 | b693125f | Tsachy Shacham | else:
|
1109 | b693125f | Tsachy Shacham | # The number of vCPUs mapped should match the number of vCPUs
|
1110 | b693125f | Tsachy Shacham | # reported by KVM. This was already verified earlier, so
|
1111 | b693125f | Tsachy Shacham | # here only as a sanity check.
|
1112 | b693125f | Tsachy Shacham | assert len(thread_dict) == len(cpu_list) |
1113 | b693125f | Tsachy Shacham | cls._VerifyAffinityPackage() |
1114 | b693125f | Tsachy Shacham | |
1115 | b693125f | Tsachy Shacham | # For each vCPU, map it to the proper list of physical CPUs
|
1116 | b693125f | Tsachy Shacham | for vcpu, i in zip(cpu_list, range(len(cpu_list))): |
1117 | b693125f | Tsachy Shacham | affinity.set_process_affinity_mask(thread_dict[i], |
1118 | 5ae4945a | Iustin Pop | cls._BuildAffinityCpuMask(vcpu)) |
1119 | b693125f | Tsachy Shacham | |
1120 | b693125f | Tsachy Shacham | def _GetVcpuThreadIds(self, instance_name): |
1121 | b693125f | Tsachy Shacham | """Get a mapping of vCPU no. to thread IDs for the instance
|
1122 | b693125f | Tsachy Shacham |
|
1123 | b693125f | Tsachy Shacham | @type instance_name: string
|
1124 | b693125f | Tsachy Shacham | @param instance_name: instance in question
|
1125 | b693125f | Tsachy Shacham | @rtype: dictionary of int:int
|
1126 | b693125f | Tsachy Shacham | @return: a dictionary mapping vCPU numbers to thread IDs
|
1127 | b693125f | Tsachy Shacham |
|
1128 | b693125f | Tsachy Shacham | """
|
1129 | b693125f | Tsachy Shacham | result = {} |
1130 | b693125f | Tsachy Shacham | output = self._CallMonitorCommand(instance_name, self._CPU_INFO_CMD) |
1131 | b693125f | Tsachy Shacham | for line in output.stdout.splitlines(): |
1132 | b693125f | Tsachy Shacham | match = self._CPU_INFO_RE.search(line)
|
1133 | b693125f | Tsachy Shacham | if not match: |
1134 | b693125f | Tsachy Shacham | continue
|
1135 | b693125f | Tsachy Shacham | grp = map(int, match.groups()) |
1136 | b693125f | Tsachy Shacham | result[grp[0]] = grp[1] |
1137 | b693125f | Tsachy Shacham | |
1138 | b693125f | Tsachy Shacham | return result
|
1139 | b693125f | Tsachy Shacham | |
1140 | 1d8a7812 | Andrea Spadaccini | def _ExecuteCpuAffinity(self, instance_name, cpu_mask): |
1141 | 1d8a7812 | Andrea Spadaccini | """Complete CPU pinning.
|
1142 | b693125f | Tsachy Shacham |
|
1143 | b693125f | Tsachy Shacham | @type instance_name: string
|
1144 | b693125f | Tsachy Shacham | @param instance_name: name of instance
|
1145 | b693125f | Tsachy Shacham | @type cpu_mask: string
|
1146 | b693125f | Tsachy Shacham | @param cpu_mask: CPU pinning mask as entered by user
|
1147 | b693125f | Tsachy Shacham |
|
1148 | b693125f | Tsachy Shacham | """
|
1149 | 1d8a7812 | Andrea Spadaccini | # Get KVM process ID, to be used if need to pin entire VM
|
1150 | 1d8a7812 | Andrea Spadaccini | _, pid, _ = self._InstancePidAlive(instance_name)
|
1151 | 1d8a7812 | Andrea Spadaccini | # Get vCPU thread IDs, to be used if need to pin vCPUs separately
|
1152 | 1d8a7812 | Andrea Spadaccini | thread_dict = self._GetVcpuThreadIds(instance_name)
|
1153 | 1d8a7812 | Andrea Spadaccini | # Run CPU pinning, based on configured mask
|
1154 | 1d8a7812 | Andrea Spadaccini | self._AssignCpuAffinity(cpu_mask, pid, thread_dict)
|
1155 | b693125f | Tsachy Shacham | |
1156 | eb58f9b1 | Guido Trotter | def ListInstances(self): |
1157 | eb58f9b1 | Guido Trotter | """Get the list of running instances.
|
1158 | eb58f9b1 | Guido Trotter |
|
1159 | c41eea6e | Iustin Pop | We can do this by listing our live instances directory and
|
1160 | c41eea6e | Iustin Pop | checking whether the associated kvm process is still alive.
|
1161 | eb58f9b1 | Guido Trotter |
|
1162 | eb58f9b1 | Guido Trotter | """
|
1163 | eb58f9b1 | Guido Trotter | result = [] |
1164 | eb58f9b1 | Guido Trotter | for name in os.listdir(self._PIDS_DIR): |
1165 | 263b8de6 | Guido Trotter | if self._InstancePidAlive(name)[2]: |
1166 | eb58f9b1 | Guido Trotter | result.append(name) |
1167 | eb58f9b1 | Guido Trotter | return result
|
1168 | eb58f9b1 | Guido Trotter | |
1169 | eb58f9b1 | Guido Trotter | def GetInstanceInfo(self, instance_name): |
1170 | eb58f9b1 | Guido Trotter | """Get instance properties.
|
1171 | eb58f9b1 | Guido Trotter |
|
1172 | 4fbb3c60 | Guido Trotter | @type instance_name: string
|
1173 | c41eea6e | Iustin Pop | @param instance_name: the instance name
|
1174 | 4fbb3c60 | Guido Trotter | @rtype: tuple of strings
|
1175 | 4fbb3c60 | Guido Trotter | @return: (name, id, memory, vcpus, stat, times)
|
1176 | eb58f9b1 | Guido Trotter |
|
1177 | eb58f9b1 | Guido Trotter | """
|
1178 | 1122eb25 | Iustin Pop | _, pid, alive = self._InstancePidAlive(instance_name)
|
1179 | 1f8b3a27 | Guido Trotter | if not alive: |
1180 | eb58f9b1 | Guido Trotter | return None |
1181 | eb58f9b1 | Guido Trotter | |
1182 | 263b8de6 | Guido Trotter | _, memory, vcpus = self._InstancePidInfo(pid)
|
1183 | fc84cd5d | Guido Trotter | istat = "---b-"
|
1184 | eb58f9b1 | Guido Trotter | times = "0"
|
1185 | eb58f9b1 | Guido Trotter | |
1186 | 89da2ff3 | Guido Trotter | try:
|
1187 | 89da2ff3 | Guido Trotter | qmp = QmpConnection(self._InstanceQmpMonitor(instance_name))
|
1188 | 89da2ff3 | Guido Trotter | qmp.connect() |
1189 | 89da2ff3 | Guido Trotter | vcpus = len(qmp.Execute("query-cpus")[qmp.RETURN_KEY]) |
1190 | 89da2ff3 | Guido Trotter | # Will fail if ballooning is not enabled, but we can then just resort to
|
1191 | 89da2ff3 | Guido Trotter | # the value above.
|
1192 | 89da2ff3 | Guido Trotter | mem_bytes = qmp.Execute("query-balloon")[qmp.RETURN_KEY][qmp.ACTUAL_KEY]
|
1193 | 89da2ff3 | Guido Trotter | memory = mem_bytes / 1048576
|
1194 | 89da2ff3 | Guido Trotter | except errors.HypervisorError:
|
1195 | 89da2ff3 | Guido Trotter | pass
|
1196 | 89da2ff3 | Guido Trotter | |
1197 | fc84cd5d | Guido Trotter | return (instance_name, pid, memory, vcpus, istat, times)
|
1198 | eb58f9b1 | Guido Trotter | |
1199 | eb58f9b1 | Guido Trotter | def GetAllInstancesInfo(self): |
1200 | eb58f9b1 | Guido Trotter | """Get properties of all instances.
|
1201 | eb58f9b1 | Guido Trotter |
|
1202 | c41eea6e | Iustin Pop | @return: list of tuples (name, id, memory, vcpus, stat, times)
|
1203 | c41eea6e | Iustin Pop |
|
1204 | eb58f9b1 | Guido Trotter | """
|
1205 | eb58f9b1 | Guido Trotter | data = [] |
1206 | eb58f9b1 | Guido Trotter | for name in os.listdir(self._PIDS_DIR): |
1207 | 263b8de6 | Guido Trotter | try:
|
1208 | 263b8de6 | Guido Trotter | info = self.GetInstanceInfo(name)
|
1209 | 263b8de6 | Guido Trotter | except errors.HypervisorError:
|
1210 | 3bc145d8 | Bernardo Dal Seno | # Ignore exceptions due to instances being shut down
|
1211 | 263b8de6 | Guido Trotter | continue
|
1212 | 263b8de6 | Guido Trotter | if info:
|
1213 | 263b8de6 | Guido Trotter | data.append(info) |
1214 | eb58f9b1 | Guido Trotter | return data
|
1215 | eb58f9b1 | Guido Trotter | |
1216 | 4a44d8aa | Dimitris Aragiorgis | def _GenerateKVMBlockDevicesOptions(self, instance, kvm_disks, |
1217 | e419e42f | Dimitris Aragiorgis | kvmhelp, devlist): |
1218 | e419e42f | Dimitris Aragiorgis | """Generate KVM options regarding instance's block devices.
|
1219 | e419e42f | Dimitris Aragiorgis |
|
1220 | e419e42f | Dimitris Aragiorgis | @type instance: L{objects.Instance}
|
1221 | e419e42f | Dimitris Aragiorgis | @param instance: the instance object
|
1222 | 4a44d8aa | Dimitris Aragiorgis | @type kvm_disks: list of tuples
|
1223 | 4a44d8aa | Dimitris Aragiorgis | @param kvm_disks: list of tuples [(disk, link_name)..]
|
1224 | e419e42f | Dimitris Aragiorgis | @type kvmhelp: string
|
1225 | e419e42f | Dimitris Aragiorgis | @param kvmhelp: output of kvm --help
|
1226 | e419e42f | Dimitris Aragiorgis | @type devlist: string
|
1227 | e419e42f | Dimitris Aragiorgis | @param devlist: output of kvm -device ?
|
1228 | e419e42f | Dimitris Aragiorgis | @rtype: list
|
1229 | e419e42f | Dimitris Aragiorgis | @return: list of command line options eventually used by kvm executable
|
1230 | ece1057c | Dimitris Aragiorgis |
|
1231 | e419e42f | Dimitris Aragiorgis | """
|
1232 | ece1057c | Dimitris Aragiorgis | hvp = instance.hvparams |
1233 | e419e42f | Dimitris Aragiorgis | kernel_path = hvp[constants.HV_KERNEL_PATH] |
1234 | e419e42f | Dimitris Aragiorgis | if kernel_path:
|
1235 | e419e42f | Dimitris Aragiorgis | boot_disk = False
|
1236 | e419e42f | Dimitris Aragiorgis | else:
|
1237 | e419e42f | Dimitris Aragiorgis | boot_disk = hvp[constants.HV_BOOT_ORDER] == constants.HT_BO_DISK |
1238 | ece1057c | Dimitris Aragiorgis | |
1239 | ece1057c | Dimitris Aragiorgis | # whether this is an older KVM version that uses the boot=on flag
|
1240 | ece1057c | Dimitris Aragiorgis | # on devices
|
1241 | ece1057c | Dimitris Aragiorgis | needs_boot_flag = self._BOOT_RE.search(kvmhelp)
|
1242 | ece1057c | Dimitris Aragiorgis | |
1243 | ece1057c | Dimitris Aragiorgis | dev_opts = [] |
1244 | 994ccaf2 | Dimitris Aragiorgis | device_driver = None
|
1245 | ece1057c | Dimitris Aragiorgis | disk_type = hvp[constants.HV_DISK_TYPE] |
1246 | ece1057c | Dimitris Aragiorgis | if disk_type == constants.HT_DISK_PARAVIRTUAL:
|
1247 | ece1057c | Dimitris Aragiorgis | if_val = ",if=%s" % self._VIRTIO |
1248 | 994ccaf2 | Dimitris Aragiorgis | try:
|
1249 | 994ccaf2 | Dimitris Aragiorgis | if self._VIRTIO_BLK_RE.search(devlist): |
1250 | 0288e7bf | Dimitris Aragiorgis | if_val = ",if=none"
|
1251 | 994ccaf2 | Dimitris Aragiorgis | # will be passed in -device option as driver
|
1252 | 994ccaf2 | Dimitris Aragiorgis | device_driver = self._VIRTIO_BLK_PCI
|
1253 | 994ccaf2 | Dimitris Aragiorgis | except errors.HypervisorError, _:
|
1254 | 994ccaf2 | Dimitris Aragiorgis | pass
|
1255 | ece1057c | Dimitris Aragiorgis | else:
|
1256 | ece1057c | Dimitris Aragiorgis | if_val = ",if=%s" % disk_type
|
1257 | ece1057c | Dimitris Aragiorgis | # Cache mode
|
1258 | ece1057c | Dimitris Aragiorgis | disk_cache = hvp[constants.HV_DISK_CACHE] |
1259 | ece1057c | Dimitris Aragiorgis | if instance.disk_template in constants.DTS_EXT_MIRROR: |
1260 | ece1057c | Dimitris Aragiorgis | if disk_cache != "none": |
1261 | ece1057c | Dimitris Aragiorgis | # TODO: make this a hard error, instead of a silent overwrite
|
1262 | ece1057c | Dimitris Aragiorgis | logging.warning("KVM: overriding disk_cache setting '%s' with 'none'"
|
1263 | ece1057c | Dimitris Aragiorgis | " to prevent shared storage corruption on migration",
|
1264 | ece1057c | Dimitris Aragiorgis | disk_cache) |
1265 | ece1057c | Dimitris Aragiorgis | cache_val = ",cache=none"
|
1266 | ece1057c | Dimitris Aragiorgis | elif disk_cache != constants.HT_CACHE_DEFAULT:
|
1267 | ece1057c | Dimitris Aragiorgis | cache_val = ",cache=%s" % disk_cache
|
1268 | ece1057c | Dimitris Aragiorgis | else:
|
1269 | ece1057c | Dimitris Aragiorgis | cache_val = ""
|
1270 | f44c88c7 | Dimitris Aragiorgis | for idx, (cfdev, link_name) in enumerate(kvm_disks): |
1271 | ece1057c | Dimitris Aragiorgis | if cfdev.mode != constants.DISK_RDWR:
|
1272 | ece1057c | Dimitris Aragiorgis | raise errors.HypervisorError("Instance has read-only disks which" |
1273 | ece1057c | Dimitris Aragiorgis | " are not supported by KVM")
|
1274 | ece1057c | Dimitris Aragiorgis | # TODO: handle FD_LOOP and FD_BLKTAP (?)
|
1275 | ece1057c | Dimitris Aragiorgis | boot_val = ""
|
1276 | ece1057c | Dimitris Aragiorgis | if boot_disk:
|
1277 | ece1057c | Dimitris Aragiorgis | dev_opts.extend(["-boot", "c"]) |
1278 | ece1057c | Dimitris Aragiorgis | boot_disk = False
|
1279 | ece1057c | Dimitris Aragiorgis | if needs_boot_flag and disk_type != constants.HT_DISK_IDE: |
1280 | ece1057c | Dimitris Aragiorgis | boot_val = ",boot=on"
|
1281 | ece1057c | Dimitris Aragiorgis | drive_val = "file=%s,format=raw%s%s%s" % \
|
1282 | f44c88c7 | Dimitris Aragiorgis | (link_name, if_val, boot_val, cache_val) |
1283 | ece1057c | Dimitris Aragiorgis | |
1284 | 994ccaf2 | Dimitris Aragiorgis | if device_driver:
|
1285 | 4a44d8aa | Dimitris Aragiorgis | # kvm_disks are the 4th entry of runtime file that did not exist in
|
1286 | 0288e7bf | Dimitris Aragiorgis | # the past. That means that cfdev should always have pci slot and
|
1287 | 0288e7bf | Dimitris Aragiorgis | # _GenerateDeviceKVMId() will not raise a exception.
|
1288 | f44c88c7 | Dimitris Aragiorgis | kvm_devid = _GenerateDeviceKVMId(constants.HOTPLUG_TARGET_DISK, |
1289 | f44c88c7 | Dimitris Aragiorgis | cfdev, idx) |
1290 | 0288e7bf | Dimitris Aragiorgis | drive_val += (",id=%s" % kvm_devid)
|
1291 | f44c88c7 | Dimitris Aragiorgis | if cfdev.pci:
|
1292 | f44c88c7 | Dimitris Aragiorgis | drive_val += (",bus=0,unit=%d" % cfdev.pci)
|
1293 | 0288e7bf | Dimitris Aragiorgis | dev_val = ("%s,drive=%s,id=%s" %
|
1294 | 0288e7bf | Dimitris Aragiorgis | (device_driver, kvm_devid, kvm_devid)) |
1295 | f44c88c7 | Dimitris Aragiorgis | if cfdev.pci:
|
1296 | f44c88c7 | Dimitris Aragiorgis | dev_val += ",bus=pci.0,addr=%s" % hex(cfdev.pci) |
1297 | 0288e7bf | Dimitris Aragiorgis | dev_opts.extend(["-device", dev_val])
|
1298 | 0288e7bf | Dimitris Aragiorgis | |
1299 | 9209d947 | Dimitris Aragiorgis | # TODO: export disk geometry in IDISK_PARAMS
|
1300 | 9209d947 | Dimitris Aragiorgis | heads = cfdev.params.get('heads', None) |
1301 | 9209d947 | Dimitris Aragiorgis | secs = cfdev.params.get('secs', None) |
1302 | 9209d947 | Dimitris Aragiorgis | if heads and secs: |
1303 | 9209d947 | Dimitris Aragiorgis | nr_sectors = cfdev.size * 1024 * 1024 / 512 |
1304 | 9209d947 | Dimitris Aragiorgis | cyls = nr_sectors / (int(heads) * int(secs)) |
1305 | 9209d947 | Dimitris Aragiorgis | if cyls > 16383: |
1306 | 9209d947 | Dimitris Aragiorgis | cyls = 16383
|
1307 | 9209d947 | Dimitris Aragiorgis | elif cyls < 2: |
1308 | 9209d947 | Dimitris Aragiorgis | cyls = 2
|
1309 | 9209d947 | Dimitris Aragiorgis | if cyls and heads and secs: |
1310 | 9209d947 | Dimitris Aragiorgis | drive_val += (",cyls=%d,heads=%d,secs=%d" %
|
1311 | 9209d947 | Dimitris Aragiorgis | (cyls, int(heads), int(secs))) |
1312 | 9209d947 | Dimitris Aragiorgis | |
1313 | ece1057c | Dimitris Aragiorgis | dev_opts.extend(["-drive", drive_val])
|
1314 | ece1057c | Dimitris Aragiorgis | |
1315 | ece1057c | Dimitris Aragiorgis | return dev_opts
|
1316 | ece1057c | Dimitris Aragiorgis | |
1317 | b73f1c59 | Guido Trotter | def _GenerateKVMRuntime(self, instance, block_devices, startup_paused, |
1318 | b73f1c59 | Guido Trotter | kvmhelp): |
1319 | ee5f20b0 | Guido Trotter | """Generate KVM information to start an instance.
|
1320 | eb58f9b1 | Guido Trotter |
|
1321 | b73f1c59 | Guido Trotter | @type kvmhelp: string
|
1322 | b73f1c59 | Guido Trotter | @param kvmhelp: output of kvm --help
|
1323 | 839642c2 | Iustin Pop | @attention: this function must not have any side-effects; for
|
1324 | 839642c2 | Iustin Pop | example, it must not write to the filesystem, or read values
|
1325 | 839642c2 | Iustin Pop | from the current system the are expected to differ between
|
1326 | 839642c2 | Iustin Pop | nodes, since it is only run once at instance startup;
|
1327 | 839642c2 | Iustin Pop | actions/kvm arguments that can vary between systems should be
|
1328 | 839642c2 | Iustin Pop | done in L{_ExecuteKVMRuntime}
|
1329 | 839642c2 | Iustin Pop |
|
1330 | eb58f9b1 | Guido Trotter | """
|
1331 | 4888a609 | Guido Trotter | # pylint: disable=R0912,R0914,R0915
|
1332 | 4888a609 | Guido Trotter | hvp = instance.hvparams |
1333 | 81e265f5 | Guido Trotter | self.ValidateParameters(hvp)
|
1334 | 4304964a | Guido Trotter | |
1335 | e687ec01 | Michael Hanselmann | pidfile = self._InstancePidFile(instance.name)
|
1336 | 4b9638dc | Guido Trotter | kvm = hvp[constants.HV_KVM_PATH] |
1337 | eb58f9b1 | Guido Trotter | kvm_cmd = [kvm] |
1338 | c6a39fc2 | Guido Trotter | # used just by the vnc server, if enabled
|
1339 | d0c8c01d | Iustin Pop | kvm_cmd.extend(["-name", instance.name])
|
1340 | f5a4b9ce | Guido Trotter | kvm_cmd.extend(["-m", instance.beparams[constants.BE_MAXMEM]])
|
1341 | 4888a609 | Guido Trotter | |
1342 | 4888a609 | Guido Trotter | smp_list = ["%s" % instance.beparams[constants.BE_VCPUS]]
|
1343 | 4888a609 | Guido Trotter | if hvp[constants.HV_CPU_CORES]:
|
1344 | 4888a609 | Guido Trotter | smp_list.append("cores=%s" % hvp[constants.HV_CPU_CORES])
|
1345 | 4888a609 | Guido Trotter | if hvp[constants.HV_CPU_THREADS]:
|
1346 | 4888a609 | Guido Trotter | smp_list.append("threads=%s" % hvp[constants.HV_CPU_THREADS])
|
1347 | 4888a609 | Guido Trotter | if hvp[constants.HV_CPU_SOCKETS]:
|
1348 | 4888a609 | Guido Trotter | smp_list.append("sockets=%s" % hvp[constants.HV_CPU_SOCKETS])
|
1349 | 4888a609 | Guido Trotter | |
1350 | 4888a609 | Guido Trotter | kvm_cmd.extend(["-smp", ",".join(smp_list)]) |
1351 | 4888a609 | Guido Trotter | |
1352 | d0c8c01d | Iustin Pop | kvm_cmd.extend(["-pidfile", pidfile])
|
1353 | fcf5b670 | Guido Trotter | kvm_cmd.extend(["-balloon", "virtio"]) |
1354 | d0c8c01d | Iustin Pop | kvm_cmd.extend(["-daemonize"])
|
1355 | 6b5605e8 | Iustin Pop | if not instance.hvparams[constants.HV_ACPI]: |
1356 | d0c8c01d | Iustin Pop | kvm_cmd.extend(["-no-acpi"])
|
1357 | 990ade2d | Stephen Shirley | if instance.hvparams[constants.HV_REBOOT_BEHAVIOR] == \
|
1358 | 990ade2d | Stephen Shirley | constants.INSTANCE_REBOOT_EXIT: |
1359 | 990ade2d | Stephen Shirley | kvm_cmd.extend(["-no-reboot"])
|
1360 | eb58f9b1 | Guido Trotter | |
1361 | 4ab75599 | Dimitris Aragiorgis | mversion = hvp[constants.HV_KVM_MACHINE_VERSION] |
1362 | 4ab75599 | Dimitris Aragiorgis | if not mversion: |
1363 | 4b9638dc | Guido Trotter | mversion = self._GetDefaultMachineVersion(kvm)
|
1364 | 8cb5634a | Guido Trotter | if self._MACHINE_RE.search(kvmhelp): |
1365 | 8cb5634a | Guido Trotter | # TODO (2.8): kernel_irqchip and kvm_shadow_mem machine properties, as
|
1366 | 8cb5634a | Guido Trotter | # extra hypervisor parameters. We should also investigate whether and how
|
1367 | 8cb5634a | Guido Trotter | # shadow_mem should be considered for the resource model.
|
1368 | 8cb5634a | Guido Trotter | if (hvp[constants.HV_KVM_FLAG] == constants.HT_KVM_ENABLED):
|
1369 | 8cb5634a | Guido Trotter | specprop = ",accel=kvm"
|
1370 | 8cb5634a | Guido Trotter | else:
|
1371 | 8cb5634a | Guido Trotter | specprop = ""
|
1372 | 8cb5634a | Guido Trotter | machinespec = "%s%s" % (mversion, specprop)
|
1373 | 8cb5634a | Guido Trotter | kvm_cmd.extend(["-machine", machinespec])
|
1374 | 8cb5634a | Guido Trotter | else:
|
1375 | 8cb5634a | Guido Trotter | kvm_cmd.extend(["-M", mversion])
|
1376 | 8cb5634a | Guido Trotter | if (hvp[constants.HV_KVM_FLAG] == constants.HT_KVM_ENABLED and |
1377 | 8cb5634a | Guido Trotter | self._ENABLE_KVM_RE.search(kvmhelp)):
|
1378 | 8cb5634a | Guido Trotter | kvm_cmd.extend(["-enable-kvm"])
|
1379 | 8cb5634a | Guido Trotter | elif (hvp[constants.HV_KVM_FLAG] == constants.HT_KVM_DISABLED and |
1380 | 8cb5634a | Guido Trotter | self._DISABLE_KVM_RE.search(kvmhelp)):
|
1381 | 8cb5634a | Guido Trotter | kvm_cmd.extend(["-disable-kvm"])
|
1382 | 4ab75599 | Dimitris Aragiorgis | |
1383 | 2b846304 | Iustin Pop | kernel_path = hvp[constants.HV_KERNEL_PATH] |
1384 | 2b846304 | Iustin Pop | if kernel_path:
|
1385 | ece1057c | Dimitris Aragiorgis | boot_cdrom = boot_floppy = boot_network = False
|
1386 | 2b846304 | Iustin Pop | else:
|
1387 | 2b846304 | Iustin Pop | boot_cdrom = hvp[constants.HV_BOOT_ORDER] == constants.HT_BO_CDROM |
1388 | 2b846304 | Iustin Pop | boot_floppy = hvp[constants.HV_BOOT_ORDER] == constants.HT_BO_FLOPPY |
1389 | 2b846304 | Iustin Pop | boot_network = hvp[constants.HV_BOOT_ORDER] == constants.HT_BO_NETWORK |
1390 | 8745c3d7 | Guido Trotter | |
1391 | b693125f | Tsachy Shacham | if startup_paused:
|
1392 | b693125f | Tsachy Shacham | kvm_cmd.extend([_KVM_START_PAUSED_FLAG]) |
1393 | b693125f | Tsachy Shacham | |
1394 | 8745c3d7 | Guido Trotter | if boot_network:
|
1395 | d0c8c01d | Iustin Pop | kvm_cmd.extend(["-boot", "n"]) |
1396 | 1213604d | Guido Trotter | |
1397 | 24be50e0 | Iustin Pop | # whether this is an older KVM version that uses the boot=on flag
|
1398 | 24be50e0 | Iustin Pop | # on devices
|
1399 | 0ad7f5d8 | Guido Trotter | needs_boot_flag = self._BOOT_RE.search(kvmhelp)
|
1400 | 24be50e0 | Iustin Pop | |
1401 | a985b417 | Iustin Pop | disk_type = hvp[constants.HV_DISK_TYPE] |
1402 | eb58f9b1 | Guido Trotter | |
1403 | cc130cc7 | Marco Casavecchia | #Now we can specify a different device type for CDROM devices.
|
1404 | cc130cc7 | Marco Casavecchia | cdrom_disk_type = hvp[constants.HV_KVM_CDROM_DISK_TYPE] |
1405 | cc130cc7 | Marco Casavecchia | if not cdrom_disk_type: |
1406 | cc130cc7 | Marco Casavecchia | cdrom_disk_type = disk_type |
1407 | cc130cc7 | Marco Casavecchia | |
1408 | a985b417 | Iustin Pop | iso_image = hvp[constants.HV_CDROM_IMAGE_PATH] |
1409 | 66d5dbef | Guido Trotter | if iso_image:
|
1410 | d0c8c01d | Iustin Pop | options = ",format=raw,media=cdrom"
|
1411 | 24be50e0 | Iustin Pop | # set cdrom 'if' type
|
1412 | 66d5dbef | Guido Trotter | if boot_cdrom:
|
1413 | 24be50e0 | Iustin Pop | actual_cdrom_type = constants.HT_DISK_IDE |
1414 | 24be50e0 | Iustin Pop | elif cdrom_disk_type == constants.HT_DISK_PARAVIRTUAL:
|
1415 | 24be50e0 | Iustin Pop | actual_cdrom_type = "virtio"
|
1416 | 9dd363eb | Guido Trotter | else:
|
1417 | 24be50e0 | Iustin Pop | actual_cdrom_type = cdrom_disk_type |
1418 | 24be50e0 | Iustin Pop | if_val = ",if=%s" % actual_cdrom_type
|
1419 | 24be50e0 | Iustin Pop | # set boot flag, if needed
|
1420 | 24be50e0 | Iustin Pop | boot_val = ""
|
1421 | 24be50e0 | Iustin Pop | if boot_cdrom:
|
1422 | 24be50e0 | Iustin Pop | kvm_cmd.extend(["-boot", "d"]) |
1423 | 24be50e0 | Iustin Pop | if needs_boot_flag:
|
1424 | 24be50e0 | Iustin Pop | boot_val = ",boot=on"
|
1425 | 24be50e0 | Iustin Pop | # and finally build the entire '-drive' value
|
1426 | 24be50e0 | Iustin Pop | drive_val = "file=%s%s%s%s" % (iso_image, options, if_val, boot_val)
|
1427 | d0c8c01d | Iustin Pop | kvm_cmd.extend(["-drive", drive_val])
|
1428 | 66d5dbef | Guido Trotter | |
1429 | cc130cc7 | Marco Casavecchia | iso_image2 = hvp[constants.HV_KVM_CDROM2_IMAGE_PATH] |
1430 | cc130cc7 | Marco Casavecchia | if iso_image2:
|
1431 | d0c8c01d | Iustin Pop | options = ",format=raw,media=cdrom"
|
1432 | cc130cc7 | Marco Casavecchia | if cdrom_disk_type == constants.HT_DISK_PARAVIRTUAL:
|
1433 | d0c8c01d | Iustin Pop | if_val = ",if=virtio"
|
1434 | cc130cc7 | Marco Casavecchia | else:
|
1435 | d0c8c01d | Iustin Pop | if_val = ",if=%s" % cdrom_disk_type
|
1436 | 24be50e0 | Iustin Pop | drive_val = "file=%s%s%s" % (iso_image2, options, if_val)
|
1437 | d0c8c01d | Iustin Pop | kvm_cmd.extend(["-drive", drive_val])
|
1438 | cc130cc7 | Marco Casavecchia | |
1439 | cc130cc7 | Marco Casavecchia | floppy_image = hvp[constants.HV_KVM_FLOPPY_IMAGE_PATH] |
1440 | cc130cc7 | Marco Casavecchia | if floppy_image:
|
1441 | d0c8c01d | Iustin Pop | options = ",format=raw,media=disk"
|
1442 | cc130cc7 | Marco Casavecchia | if boot_floppy:
|
1443 | d0c8c01d | Iustin Pop | kvm_cmd.extend(["-boot", "a"]) |
1444 | d0c8c01d | Iustin Pop | options = "%s,boot=on" % options
|
1445 | d0c8c01d | Iustin Pop | if_val = ",if=floppy"
|
1446 | d0c8c01d | Iustin Pop | options = "%s%s" % (options, if_val)
|
1447 | d0c8c01d | Iustin Pop | drive_val = "file=%s%s" % (floppy_image, options)
|
1448 | d0c8c01d | Iustin Pop | kvm_cmd.extend(["-drive", drive_val])
|
1449 | cc130cc7 | Marco Casavecchia | |
1450 | df5ab9f0 | Guido Trotter | if kernel_path:
|
1451 | d0c8c01d | Iustin Pop | kvm_cmd.extend(["-kernel", kernel_path])
|
1452 | a985b417 | Iustin Pop | initrd_path = hvp[constants.HV_INITRD_PATH] |
1453 | df5ab9f0 | Guido Trotter | if initrd_path:
|
1454 | d0c8c01d | Iustin Pop | kvm_cmd.extend(["-initrd", initrd_path])
|
1455 | d0c8c01d | Iustin Pop | root_append = ["root=%s" % hvp[constants.HV_ROOT_PATH],
|
1456 | 07813a9e | Iustin Pop | hvp[constants.HV_KERNEL_ARGS]] |
1457 | 07813a9e | Iustin Pop | if hvp[constants.HV_SERIAL_CONSOLE]:
|
1458 | 14fd6c81 | Guido Trotter | serial_speed = hvp[constants.HV_SERIAL_SPEED] |
1459 | 14fd6c81 | Guido Trotter | root_append.append("console=ttyS0,%s" % serial_speed)
|
1460 | d0c8c01d | Iustin Pop | kvm_cmd.extend(["-append", " ".join(root_append)]) |
1461 | eb58f9b1 | Guido Trotter | |
1462 | 4f958b0b | Miguel Di Ciurcio Filho | mem_path = hvp[constants.HV_MEM_PATH] |
1463 | 4f958b0b | Miguel Di Ciurcio Filho | if mem_path:
|
1464 | 9d3015f9 | Guido Trotter | kvm_cmd.extend(["-mem-path", mem_path, "-mem-prealloc"]) |
1465 | 4f958b0b | Miguel Di Ciurcio Filho | |
1466 | 596b2459 | Guido Trotter | monitor_dev = ("unix:%s,server,nowait" %
|
1467 | 596b2459 | Guido Trotter | self._InstanceMonitor(instance.name))
|
1468 | 596b2459 | Guido Trotter | kvm_cmd.extend(["-monitor", monitor_dev])
|
1469 | 596b2459 | Guido Trotter | if hvp[constants.HV_SERIAL_CONSOLE]:
|
1470 | 596b2459 | Guido Trotter | serial_dev = ("unix:%s,server,nowait" %
|
1471 | 596b2459 | Guido Trotter | self._InstanceSerial(instance.name))
|
1472 | 596b2459 | Guido Trotter | kvm_cmd.extend(["-serial", serial_dev])
|
1473 | 596b2459 | Guido Trotter | else:
|
1474 | 596b2459 | Guido Trotter | kvm_cmd.extend(["-serial", "none"]) |
1475 | 596b2459 | Guido Trotter | |
1476 | a985b417 | Iustin Pop | mouse_type = hvp[constants.HV_USB_MOUSE] |
1477 | 31f6f67a | Guido Trotter | vnc_bind_address = hvp[constants.HV_VNC_BIND_ADDRESS] |
1478 | 596b2459 | Guido Trotter | spice_bind = hvp[constants.HV_KVM_SPICE_BIND] |
1479 | 596b2459 | Guido Trotter | spice_ip_version = None
|
1480 | 31f6f67a | Guido Trotter | |
1481 | a900a30c | Guido Trotter | kvm_cmd.extend(["-usb"])
|
1482 | a900a30c | Guido Trotter | |
1483 | 11344a50 | Guido Trotter | if mouse_type:
|
1484 | d0c8c01d | Iustin Pop | kvm_cmd.extend(["-usbdevice", mouse_type])
|
1485 | 31f6f67a | Guido Trotter | elif vnc_bind_address:
|
1486 | d0c8c01d | Iustin Pop | kvm_cmd.extend(["-usbdevice", constants.HT_MOUSE_TABLET])
|
1487 | 11344a50 | Guido Trotter | |
1488 | 8470c8db | Guido Trotter | if vnc_bind_address:
|
1489 | 8b312c1d | Manuel Franceschini | if netutils.IP4Address.IsValid(vnc_bind_address):
|
1490 | 377d74c9 | Guido Trotter | if instance.network_port > constants.VNC_BASE_PORT:
|
1491 | 377d74c9 | Guido Trotter | display = instance.network_port - constants.VNC_BASE_PORT |
1492 | 14f5f1b6 | Manuel Franceschini | if vnc_bind_address == constants.IP4_ADDRESS_ANY:
|
1493 | d0c8c01d | Iustin Pop | vnc_arg = ":%d" % (display)
|
1494 | 8447f52b | Guido Trotter | else:
|
1495 | d0c8c01d | Iustin Pop | vnc_arg = "%s:%d" % (vnc_bind_address, display)
|
1496 | 8470c8db | Guido Trotter | else:
|
1497 | afa9bb2e | Michael Hanselmann | logging.error("Network port is not a valid VNC display (%d < %d),"
|
1498 | afa9bb2e | Michael Hanselmann | " not starting VNC",
|
1499 | afa9bb2e | Michael Hanselmann | instance.network_port, constants.VNC_BASE_PORT) |
1500 | d0c8c01d | Iustin Pop | vnc_arg = "none"
|
1501 | 8b2d1013 | Guido Trotter | |
1502 | 8b2d1013 | Guido Trotter | # Only allow tls and other option when not binding to a file, for now.
|
1503 | 8b2d1013 | Guido Trotter | # kvm/qemu gets confused otherwise about the filename to use.
|
1504 | d0c8c01d | Iustin Pop | vnc_append = ""
|
1505 | a985b417 | Iustin Pop | if hvp[constants.HV_VNC_TLS]:
|
1506 | d0c8c01d | Iustin Pop | vnc_append = "%s,tls" % vnc_append
|
1507 | a985b417 | Iustin Pop | if hvp[constants.HV_VNC_X509_VERIFY]:
|
1508 | d0c8c01d | Iustin Pop | vnc_append = "%s,x509verify=%s" % (vnc_append,
|
1509 | a985b417 | Iustin Pop | hvp[constants.HV_VNC_X509]) |
1510 | a985b417 | Iustin Pop | elif hvp[constants.HV_VNC_X509]:
|
1511 | d0c8c01d | Iustin Pop | vnc_append = "%s,x509=%s" % (vnc_append,
|
1512 | a985b417 | Iustin Pop | hvp[constants.HV_VNC_X509]) |
1513 | 6e6bb8d5 | Guido Trotter | if hvp[constants.HV_VNC_PASSWORD_FILE]:
|
1514 | d0c8c01d | Iustin Pop | vnc_append = "%s,password" % vnc_append
|
1515 | 6e6bb8d5 | Guido Trotter | |
1516 | d0c8c01d | Iustin Pop | vnc_arg = "%s%s" % (vnc_arg, vnc_append)
|
1517 | 8b2d1013 | Guido Trotter | |
1518 | 8470c8db | Guido Trotter | else:
|
1519 | d0c8c01d | Iustin Pop | vnc_arg = "unix:%s/%s.vnc" % (vnc_bind_address, instance.name)
|
1520 | 8b2d1013 | Guido Trotter | |
1521 | d0c8c01d | Iustin Pop | kvm_cmd.extend(["-vnc", vnc_arg])
|
1522 | 596b2459 | Guido Trotter | elif spice_bind:
|
1523 | 839642c2 | Iustin Pop | # FIXME: this is wrong here; the iface ip address differs
|
1524 | 839642c2 | Iustin Pop | # between systems, so it should be done in _ExecuteKVMRuntime
|
1525 | b1cb62bd | Andrea Spadaccini | if netutils.IsValidInterface(spice_bind):
|
1526 | b1cb62bd | Andrea Spadaccini | # The user specified a network interface, we have to figure out the IP
|
1527 | b1cb62bd | Andrea Spadaccini | # address.
|
1528 | b1cb62bd | Andrea Spadaccini | addresses = netutils.GetInterfaceIpAddresses(spice_bind) |
1529 | b1cb62bd | Andrea Spadaccini | spice_ip_version = hvp[constants.HV_KVM_SPICE_IP_VERSION] |
1530 | b1cb62bd | Andrea Spadaccini | |
1531 | b1cb62bd | Andrea Spadaccini | # if the user specified an IP version and the interface does not
|
1532 | b1cb62bd | Andrea Spadaccini | # have that kind of IP addresses, throw an exception
|
1533 | b1cb62bd | Andrea Spadaccini | if spice_ip_version != constants.IFACE_NO_IP_VERSION_SPECIFIED:
|
1534 | b1cb62bd | Andrea Spadaccini | if not addresses[spice_ip_version]: |
1535 | afa9bb2e | Michael Hanselmann | raise errors.HypervisorError("SPICE: Unable to get an IPv%s address" |
1536 | b1cb62bd | Andrea Spadaccini | " for %s" % (spice_ip_version,
|
1537 | b1cb62bd | Andrea Spadaccini | spice_bind)) |
1538 | b1cb62bd | Andrea Spadaccini | |
1539 | b1cb62bd | Andrea Spadaccini | # the user did not specify an IP version, we have to figure it out
|
1540 | b1cb62bd | Andrea Spadaccini | elif (addresses[constants.IP4_VERSION] and |
1541 | b1cb62bd | Andrea Spadaccini | addresses[constants.IP6_VERSION]): |
1542 | b1cb62bd | Andrea Spadaccini | # we have both ipv4 and ipv6, let's use the cluster default IP
|
1543 | b1cb62bd | Andrea Spadaccini | # version
|
1544 | b1cb62bd | Andrea Spadaccini | cluster_family = ssconf.SimpleStore().GetPrimaryIPFamily() |
1545 | 65107a2f | Michael Hanselmann | spice_ip_version = \ |
1546 | 65107a2f | Michael Hanselmann | netutils.IPAddress.GetVersionFromAddressFamily(cluster_family) |
1547 | b1cb62bd | Andrea Spadaccini | elif addresses[constants.IP4_VERSION]:
|
1548 | b1cb62bd | Andrea Spadaccini | spice_ip_version = constants.IP4_VERSION |
1549 | b845c8a1 | Andrea Spadaccini | elif addresses[constants.IP6_VERSION]:
|
1550 | b1cb62bd | Andrea Spadaccini | spice_ip_version = constants.IP6_VERSION |
1551 | b845c8a1 | Andrea Spadaccini | else:
|
1552 | afa9bb2e | Michael Hanselmann | raise errors.HypervisorError("SPICE: Unable to get an IP address" |
1553 | b845c8a1 | Andrea Spadaccini | " for %s" % (spice_bind))
|
1554 | b1cb62bd | Andrea Spadaccini | |
1555 | b1cb62bd | Andrea Spadaccini | spice_address = addresses[spice_ip_version][0]
|
1556 | b1cb62bd | Andrea Spadaccini | |
1557 | b1cb62bd | Andrea Spadaccini | else:
|
1558 | b1cb62bd | Andrea Spadaccini | # spice_bind is known to be a valid IP address, because
|
1559 | b1cb62bd | Andrea Spadaccini | # ValidateParameters checked it.
|
1560 | b1cb62bd | Andrea Spadaccini | spice_address = spice_bind |
1561 | b1cb62bd | Andrea Spadaccini | |
1562 | bfe86c76 | Andrea Spadaccini | spice_arg = "addr=%s" % spice_address
|
1563 | bfe86c76 | Andrea Spadaccini | if hvp[constants.HV_KVM_SPICE_USE_TLS]:
|
1564 | 5ae4945a | Iustin Pop | spice_arg = ("%s,tls-port=%s,x509-cacert-file=%s" %
|
1565 | 5ae4945a | Iustin Pop | (spice_arg, instance.network_port, |
1566 | 9d9bded1 | Michael Hanselmann | pathutils.SPICE_CACERT_FILE)) |
1567 | 5ae4945a | Iustin Pop | spice_arg = ("%s,x509-key-file=%s,x509-cert-file=%s" %
|
1568 | 9d9bded1 | Michael Hanselmann | (spice_arg, pathutils.SPICE_CERT_FILE, |
1569 | 9d9bded1 | Michael Hanselmann | pathutils.SPICE_CERT_FILE)) |
1570 | 3e40b587 | Andrea Spadaccini | tls_ciphers = hvp[constants.HV_KVM_SPICE_TLS_CIPHERS] |
1571 | 3e40b587 | Andrea Spadaccini | if tls_ciphers:
|
1572 | 3e40b587 | Andrea Spadaccini | spice_arg = "%s,tls-ciphers=%s" % (spice_arg, tls_ciphers)
|
1573 | bfe86c76 | Andrea Spadaccini | else:
|
1574 | bfe86c76 | Andrea Spadaccini | spice_arg = "%s,port=%s" % (spice_arg, instance.network_port)
|
1575 | bfe86c76 | Andrea Spadaccini | |
1576 | b451c4c7 | Andrea Spadaccini | if not hvp[constants.HV_KVM_SPICE_PASSWORD_FILE]: |
1577 | b451c4c7 | Andrea Spadaccini | spice_arg = "%s,disable-ticketing" % spice_arg
|
1578 | b451c4c7 | Andrea Spadaccini | |
1579 | 11ae7a0a | Andrea Spadaccini | if spice_ip_version:
|
1580 | 11ae7a0a | Andrea Spadaccini | spice_arg = "%s,ipv%s" % (spice_arg, spice_ip_version)
|
1581 | b1cb62bd | Andrea Spadaccini | |
1582 | ea064d24 | Andrea Spadaccini | # Image compression options
|
1583 | ea064d24 | Andrea Spadaccini | img_lossless = hvp[constants.HV_KVM_SPICE_LOSSLESS_IMG_COMPR] |
1584 | ea064d24 | Andrea Spadaccini | img_jpeg = hvp[constants.HV_KVM_SPICE_JPEG_IMG_COMPR] |
1585 | ea064d24 | Andrea Spadaccini | img_zlib_glz = hvp[constants.HV_KVM_SPICE_ZLIB_GLZ_IMG_COMPR] |
1586 | ea064d24 | Andrea Spadaccini | if img_lossless:
|
1587 | ea064d24 | Andrea Spadaccini | spice_arg = "%s,image-compression=%s" % (spice_arg, img_lossless)
|
1588 | ea064d24 | Andrea Spadaccini | if img_jpeg:
|
1589 | ea064d24 | Andrea Spadaccini | spice_arg = "%s,jpeg-wan-compression=%s" % (spice_arg, img_jpeg)
|
1590 | ea064d24 | Andrea Spadaccini | if img_zlib_glz:
|
1591 | ea064d24 | Andrea Spadaccini | spice_arg = "%s,zlib-glz-wan-compression=%s" % (spice_arg, img_zlib_glz)
|
1592 | ea064d24 | Andrea Spadaccini | |
1593 | ea064d24 | Andrea Spadaccini | # Video stream detection
|
1594 | ea064d24 | Andrea Spadaccini | video_streaming = hvp[constants.HV_KVM_SPICE_STREAMING_VIDEO_DETECTION] |
1595 | ea064d24 | Andrea Spadaccini | if video_streaming:
|
1596 | ea064d24 | Andrea Spadaccini | spice_arg = "%s,streaming-video=%s" % (spice_arg, video_streaming)
|
1597 | ea064d24 | Andrea Spadaccini | |
1598 | ea064d24 | Andrea Spadaccini | # Audio compression, by default in qemu-kvm it is on
|
1599 | ea064d24 | Andrea Spadaccini | if not hvp[constants.HV_KVM_SPICE_AUDIO_COMPR]: |
1600 | ea064d24 | Andrea Spadaccini | spice_arg = "%s,playback-compression=off" % spice_arg
|
1601 | 3e40b587 | Andrea Spadaccini | if not hvp[constants.HV_KVM_SPICE_USE_VDAGENT]: |
1602 | 3e40b587 | Andrea Spadaccini | spice_arg = "%s,agent-mouse=off" % spice_arg
|
1603 | 447af814 | Nikos Skalkotos | else:
|
1604 | 447af814 | Nikos Skalkotos | # Enable the spice agent communication channel between the host and the
|
1605 | 447af814 | Nikos Skalkotos | # agent.
|
1606 | 447af814 | Nikos Skalkotos | kvm_cmd.extend(["-device", "virtio-serial-pci"]) |
1607 | afa9bb2e | Michael Hanselmann | kvm_cmd.extend([ |
1608 | afa9bb2e | Michael Hanselmann | "-device",
|
1609 | afa9bb2e | Michael Hanselmann | "virtserialport,chardev=spicechannel0,name=com.redhat.spice.0",
|
1610 | afa9bb2e | Michael Hanselmann | ]) |
1611 | 447af814 | Nikos Skalkotos | kvm_cmd.extend(["-chardev", "spicevmc,id=spicechannel0,name=vdagent"]) |
1612 | ea064d24 | Andrea Spadaccini | |
1613 | b1cb62bd | Andrea Spadaccini | logging.info("KVM: SPICE will listen on port %s", instance.network_port)
|
1614 | b1cb62bd | Andrea Spadaccini | kvm_cmd.extend(["-spice", spice_arg])
|
1615 | b1cb62bd | Andrea Spadaccini | |
1616 | 596b2459 | Guido Trotter | else:
|
1617 | 99c7cd5b | Guido Trotter | # From qemu 1.4 -nographic is incompatible with -daemonize. The new way
|
1618 | 99c7cd5b | Guido Trotter | # also works in earlier versions though (tested with 1.1 and 1.3)
|
1619 | 99c7cd5b | Guido Trotter | if self._DISPLAY_RE.search(kvmhelp): |
1620 | 99c7cd5b | Guido Trotter | kvm_cmd.extend(["-display", "none"]) |
1621 | 99c7cd5b | Guido Trotter | else:
|
1622 | 99c7cd5b | Guido Trotter | kvm_cmd.extend(["-nographic"])
|
1623 | 596b2459 | Guido Trotter | |
1624 | 6b970cef | Jun Futagawa | if hvp[constants.HV_USE_LOCALTIME]:
|
1625 | d0c8c01d | Iustin Pop | kvm_cmd.extend(["-localtime"])
|
1626 | 6b970cef | Jun Futagawa | |
1627 | 547a63b7 | Balazs Lecz | if hvp[constants.HV_KVM_USE_CHROOT]:
|
1628 | d0c8c01d | Iustin Pop | kvm_cmd.extend(["-chroot", self._InstanceChrootDir(instance.name)]) |
1629 | 547a63b7 | Balazs Lecz | |
1630 | 7cb42171 | Nikita Staroverov | # Add qemu-KVM -cpu param
|
1631 | 7cb42171 | Nikita Staroverov | if hvp[constants.HV_CPU_TYPE]:
|
1632 | 7cb42171 | Nikita Staroverov | kvm_cmd.extend(["-cpu", hvp[constants.HV_CPU_TYPE]])
|
1633 | 7cb42171 | Nikita Staroverov | |
1634 | 2fddb144 | Guido Trotter | # As requested by music lovers
|
1635 | 2fddb144 | Guido Trotter | if hvp[constants.HV_SOUNDHW]:
|
1636 | 2fddb144 | Guido Trotter | kvm_cmd.extend(["-soundhw", hvp[constants.HV_SOUNDHW]])
|
1637 | 2fddb144 | Guido Trotter | |
1638 | 7589346f | Guido Trotter | # Pass a -vga option if requested, or if spice is used, for backwards
|
1639 | 7589346f | Guido Trotter | # compatibility.
|
1640 | 7589346f | Guido Trotter | if hvp[constants.HV_VGA]:
|
1641 | 7589346f | Guido Trotter | kvm_cmd.extend(["-vga", hvp[constants.HV_VGA]])
|
1642 | 7589346f | Guido Trotter | elif spice_bind:
|
1643 | 7589346f | Guido Trotter | kvm_cmd.extend(["-vga", "qxl"]) |
1644 | 7589346f | Guido Trotter | |
1645 | 156681c1 | Guido Trotter | # Various types of usb devices, comma separated
|
1646 | 156681c1 | Guido Trotter | if hvp[constants.HV_USB_DEVICES]:
|
1647 | 156681c1 | Guido Trotter | for dev in hvp[constants.HV_USB_DEVICES].split(","): |
1648 | 156681c1 | Guido Trotter | kvm_cmd.extend(["-usbdevice", dev])
|
1649 | 156681c1 | Guido Trotter | |
1650 | e6f24d89 | Guido Trotter | if hvp[constants.HV_KVM_EXTRA]:
|
1651 | a967416c | Guido Trotter | kvm_cmd.extend(hvp[constants.HV_KVM_EXTRA].split(" "))
|
1652 | e6f24d89 | Guido Trotter | |
1653 | 0288e7bf | Dimitris Aragiorgis | pci_reservations = bitarray(self._DEFAULT_PCI_RESERVATIONS)
|
1654 | 58502c9e | Dimitris Aragiorgis | kvm_disks = [] |
1655 | 0288e7bf | Dimitris Aragiorgis | for disk, link_name in block_devices: |
1656 | 0288e7bf | Dimitris Aragiorgis | _UpdatePCISlots(disk, pci_reservations) |
1657 | 0288e7bf | Dimitris Aragiorgis | kvm_disks.append((disk, link_name)) |
1658 | 58502c9e | Dimitris Aragiorgis | |
1659 | 58502c9e | Dimitris Aragiorgis | kvm_nics = [] |
1660 | 58502c9e | Dimitris Aragiorgis | for nic in instance.nics: |
1661 | 0288e7bf | Dimitris Aragiorgis | _UpdatePCISlots(nic, pci_reservations) |
1662 | 58502c9e | Dimitris Aragiorgis | kvm_nics.append(nic) |
1663 | 58502c9e | Dimitris Aragiorgis | |
1664 | a985b417 | Iustin Pop | hvparams = hvp |
1665 | ee5f20b0 | Guido Trotter | |
1666 | 58502c9e | Dimitris Aragiorgis | return (kvm_cmd, kvm_nics, hvparams, kvm_disks)
|
1667 | ee5f20b0 | Guido Trotter | |
1668 | 38e250ba | Guido Trotter | def _WriteKVMRuntime(self, instance_name, data): |
1669 | 38e250ba | Guido Trotter | """Write an instance's KVM runtime
|
1670 | 38e250ba | Guido Trotter |
|
1671 | 38e250ba | Guido Trotter | """
|
1672 | 38e250ba | Guido Trotter | try:
|
1673 | 38e250ba | Guido Trotter | utils.WriteFile(self._InstanceKVMRuntime(instance_name),
|
1674 | 38e250ba | Guido Trotter | data=data) |
1675 | 90c024f6 | Guido Trotter | except EnvironmentError, err: |
1676 | 38e250ba | Guido Trotter | raise errors.HypervisorError("Failed to save KVM runtime file: %s" % err) |
1677 | 38e250ba | Guido Trotter | |
1678 | 38e250ba | Guido Trotter | def _ReadKVMRuntime(self, instance_name): |
1679 | 38e250ba | Guido Trotter | """Read an instance's KVM runtime
|
1680 | 38e250ba | Guido Trotter |
|
1681 | 38e250ba | Guido Trotter | """
|
1682 | 38e250ba | Guido Trotter | try:
|
1683 | 38e250ba | Guido Trotter | file_content = utils.ReadFile(self._InstanceKVMRuntime(instance_name))
|
1684 | 90c024f6 | Guido Trotter | except EnvironmentError, err: |
1685 | 38e250ba | Guido Trotter | raise errors.HypervisorError("Failed to load KVM runtime file: %s" % err) |
1686 | 38e250ba | Guido Trotter | return file_content
|
1687 | 38e250ba | Guido Trotter | |
1688 | 38e250ba | Guido Trotter | def _SaveKVMRuntime(self, instance, kvm_runtime): |
1689 | 38e250ba | Guido Trotter | """Save an instance's KVM runtime
|
1690 | 38e250ba | Guido Trotter |
|
1691 | 38e250ba | Guido Trotter | """
|
1692 | 4a44d8aa | Dimitris Aragiorgis | kvm_cmd, kvm_nics, hvparams, kvm_disks = kvm_runtime |
1693 | 58502c9e | Dimitris Aragiorgis | |
1694 | 38e250ba | Guido Trotter | serialized_nics = [nic.ToDict() for nic in kvm_nics] |
1695 | 4a44d8aa | Dimitris Aragiorgis | serialized_disks = [(blk.ToDict(), link) |
1696 | 4a44d8aa | Dimitris Aragiorgis | for blk, link in kvm_disks] |
1697 | 58502c9e | Dimitris Aragiorgis | serialized_form = serializer.Dump((kvm_cmd, serialized_nics, hvparams, |
1698 | 4a44d8aa | Dimitris Aragiorgis | serialized_disks)) |
1699 | 58502c9e | Dimitris Aragiorgis | |
1700 | 38e250ba | Guido Trotter | self._WriteKVMRuntime(instance.name, serialized_form)
|
1701 | 38e250ba | Guido Trotter | |
1702 | 30e42c4e | Guido Trotter | def _LoadKVMRuntime(self, instance, serialized_runtime=None): |
1703 | 38e250ba | Guido Trotter | """Load an instance's KVM runtime
|
1704 | 38e250ba | Guido Trotter |
|
1705 | 38e250ba | Guido Trotter | """
|
1706 | 30e42c4e | Guido Trotter | if not serialized_runtime: |
1707 | 30e42c4e | Guido Trotter | serialized_runtime = self._ReadKVMRuntime(instance.name)
|
1708 | 58502c9e | Dimitris Aragiorgis | |
1709 | 58502c9e | Dimitris Aragiorgis | return _AnalyzeSerializedRuntime(serialized_runtime)
|
1710 | 38e250ba | Guido Trotter | |
1711 | 5d9bfd87 | Apollon Oikonomopoulos | def _RunKVMCmd(self, name, kvm_cmd, tap_fds=None): |
1712 | 76431533 | Guido Trotter | """Run the KVM cmd and check for errors
|
1713 | 76431533 | Guido Trotter |
|
1714 | 76431533 | Guido Trotter | @type name: string
|
1715 | 76431533 | Guido Trotter | @param name: instance name
|
1716 | 76431533 | Guido Trotter | @type kvm_cmd: list of strings
|
1717 | 76431533 | Guido Trotter | @param kvm_cmd: runcmd input for kvm
|
1718 | 5d9bfd87 | Apollon Oikonomopoulos | @type tap_fds: list of int
|
1719 | 5d9bfd87 | Apollon Oikonomopoulos | @param tap_fds: fds of tap devices opened by Ganeti
|
1720 | 76431533 | Guido Trotter |
|
1721 | 76431533 | Guido Trotter | """
|
1722 | 5d9bfd87 | Apollon Oikonomopoulos | try:
|
1723 | 5d9bfd87 | Apollon Oikonomopoulos | result = utils.RunCmd(kvm_cmd, noclose_fds=tap_fds) |
1724 | 5d9bfd87 | Apollon Oikonomopoulos | finally:
|
1725 | 5d9bfd87 | Apollon Oikonomopoulos | for fd in tap_fds: |
1726 | 5d9bfd87 | Apollon Oikonomopoulos | utils_wrapper.CloseFdNoError(fd) |
1727 | 5d9bfd87 | Apollon Oikonomopoulos | |
1728 | 76431533 | Guido Trotter | if result.failed:
|
1729 | 76431533 | Guido Trotter | raise errors.HypervisorError("Failed to start instance %s: %s (%s)" % |
1730 | 76431533 | Guido Trotter | (name, result.fail_reason, result.output)) |
1731 | 76431533 | Guido Trotter | if not self._InstancePidAlive(name)[2]: |
1732 | 76431533 | Guido Trotter | raise errors.HypervisorError("Failed to start instance %s" % name) |
1733 | 76431533 | Guido Trotter | |
1734 | 4a44d8aa | Dimitris Aragiorgis | # too many local variables
|
1735 | 58502c9e | Dimitris Aragiorgis | # pylint: disable=R0914
|
1736 | b73f1c59 | Guido Trotter | def _ExecuteKVMRuntime(self, instance, kvm_runtime, kvmhelp, incoming=None): |
1737 | 839642c2 | Iustin Pop | """Execute a KVM cmd, after completing it with some last minute data.
|
1738 | ee5f20b0 | Guido Trotter |
|
1739 | 30e42c4e | Guido Trotter | @type incoming: tuple of strings
|
1740 | 30e42c4e | Guido Trotter | @param incoming: (target_host_ip, port)
|
1741 | b73f1c59 | Guido Trotter | @type kvmhelp: string
|
1742 | b73f1c59 | Guido Trotter | @param kvmhelp: output of kvm --help
|
1743 | 30e42c4e | Guido Trotter |
|
1744 | ee5f20b0 | Guido Trotter | """
|
1745 | 297e6e53 | Guido Trotter | # Small _ExecuteKVMRuntime hv parameters programming howto:
|
1746 | 297e6e53 | Guido Trotter | # - conf_hvp contains the parameters as configured on ganeti. they might
|
1747 | 297e6e53 | Guido Trotter | # have changed since the instance started; only use them if the change
|
1748 | 297e6e53 | Guido Trotter | # won't affect the inside of the instance (which hasn't been rebooted).
|
1749 | 297e6e53 | Guido Trotter | # - up_hvp contains the parameters as they were when the instance was
|
1750 | 297e6e53 | Guido Trotter | # started, plus any new parameter which has been added between ganeti
|
1751 | 297e6e53 | Guido Trotter | # versions: it is paramount that those default to a value which won't
|
1752 | 297e6e53 | Guido Trotter | # affect the inside of the instance as well.
|
1753 | 297e6e53 | Guido Trotter | conf_hvp = instance.hvparams |
1754 | 5905901c | Iustin Pop | name = instance.name |
1755 | 5905901c | Iustin Pop | self._CheckDown(name)
|
1756 | ee5f20b0 | Guido Trotter | |
1757 | ee5f20b0 | Guido Trotter | temp_files = [] |
1758 | ee5f20b0 | Guido Trotter | |
1759 | 4a44d8aa | Dimitris Aragiorgis | kvm_cmd, kvm_nics, up_hvp, kvm_disks = kvm_runtime |
1760 | f0db563d | Guido Trotter | # the first element of kvm_cmd is always the path to the kvm binary
|
1761 | f0db563d | Guido Trotter | kvm_path = kvm_cmd[0]
|
1762 | 297e6e53 | Guido Trotter | up_hvp = objects.FillDict(conf_hvp, up_hvp) |
1763 | ee5f20b0 | Guido Trotter | |
1764 | 297e6e53 | Guido Trotter | # We know it's safe to run as a different user upon migration, so we'll use
|
1765 | 297e6e53 | Guido Trotter | # the latest conf, from conf_hvp.
|
1766 | 297e6e53 | Guido Trotter | security_model = conf_hvp[constants.HV_SECURITY_MODEL] |
1767 | cef34868 | Guido Trotter | if security_model == constants.HT_SM_USER:
|
1768 | 297e6e53 | Guido Trotter | kvm_cmd.extend(["-runas", conf_hvp[constants.HV_SECURITY_DOMAIN]])
|
1769 | cef34868 | Guido Trotter | |
1770 | 839642c2 | Iustin Pop | keymap = conf_hvp[constants.HV_KEYMAP] |
1771 | 839642c2 | Iustin Pop | if keymap:
|
1772 | 839642c2 | Iustin Pop | keymap_path = self._InstanceKeymapFile(name)
|
1773 | 839642c2 | Iustin Pop | # If a keymap file is specified, KVM won't use its internal defaults. By
|
1774 | 839642c2 | Iustin Pop | # first including the "en-us" layout, an error on loading the actual
|
1775 | 839642c2 | Iustin Pop | # layout (e.g. because it can't be found) won't lead to a non-functional
|
1776 | 839642c2 | Iustin Pop | # keyboard. A keyboard with incorrect keys is still better than none.
|
1777 | 839642c2 | Iustin Pop | utils.WriteFile(keymap_path, data="include en-us\ninclude %s\n" % keymap)
|
1778 | 839642c2 | Iustin Pop | kvm_cmd.extend(["-k", keymap_path])
|
1779 | 839642c2 | Iustin Pop | |
1780 | 297e6e53 | Guido Trotter | # We have reasons to believe changing something like the nic driver/type
|
1781 | 297e6e53 | Guido Trotter | # upon migration won't exactly fly with the instance kernel, so for nic
|
1782 | 297e6e53 | Guido Trotter | # related parameters we'll use up_hvp
|
1783 | 5d9bfd87 | Apollon Oikonomopoulos | tapfds = [] |
1784 | 5d9bfd87 | Apollon Oikonomopoulos | taps = [] |
1785 | e419e42f | Dimitris Aragiorgis | devlist = self._GetKVMOutput(kvm_path, self._KVMOPT_DEVICELIST) |
1786 | 150e31ec | Dimitris Aragiorgis | |
1787 | 150e31ec | Dimitris Aragiorgis | bdev_opts = self._GenerateKVMBlockDevicesOptions(instance,
|
1788 | 150e31ec | Dimitris Aragiorgis | kvm_disks, |
1789 | 150e31ec | Dimitris Aragiorgis | kvmhelp, |
1790 | 150e31ec | Dimitris Aragiorgis | devlist) |
1791 | 150e31ec | Dimitris Aragiorgis | kvm_cmd.extend(bdev_opts) |
1792 | 150e31ec | Dimitris Aragiorgis | |
1793 | ee5f20b0 | Guido Trotter | if not kvm_nics: |
1794 | fbe27e2b | Guido Trotter | kvm_cmd.extend(["-net", "none"]) |
1795 | ee5f20b0 | Guido Trotter | else:
|
1796 | 5d9bfd87 | Apollon Oikonomopoulos | vnet_hdr = False
|
1797 | fbe27e2b | Guido Trotter | tap_extra = ""
|
1798 | 297e6e53 | Guido Trotter | nic_type = up_hvp[constants.HV_NIC_TYPE] |
1799 | 37f88dc6 | Guido Trotter | if nic_type == constants.HT_NIC_PARAVIRTUAL:
|
1800 | f0db563d | Guido Trotter | nic_model = self._VIRTIO
|
1801 | f0db563d | Guido Trotter | try:
|
1802 | 994ccaf2 | Dimitris Aragiorgis | if self._VIRTIO_NET_RE.search(devlist): |
1803 | f0db563d | Guido Trotter | nic_model = self._VIRTIO_NET_PCI
|
1804 | 8a534fbe | Stratos Psomdakis | vnet_hdr = up_hvp[constants.HV_VNET_HDR] |
1805 | f0db563d | Guido Trotter | except errors.HypervisorError, _:
|
1806 | f0db563d | Guido Trotter | # Older versions of kvm don't support DEVICE_LIST, but they don't
|
1807 | f0db563d | Guido Trotter | # have new virtio syntax either.
|
1808 | f0db563d | Guido Trotter | pass
|
1809 | 4b784cf8 | Miguel Di Ciurcio Filho | |
1810 | 297e6e53 | Guido Trotter | if up_hvp[constants.HV_VHOST_NET]:
|
1811 | 3b59ec02 | Guido Trotter | # check for vhost_net support
|
1812 | 0ad7f5d8 | Guido Trotter | if self._VHOST_RE.search(kvmhelp): |
1813 | 4b784cf8 | Miguel Di Ciurcio Filho | tap_extra = ",vhost=on"
|
1814 | 4b784cf8 | Miguel Di Ciurcio Filho | else:
|
1815 | 4b784cf8 | Miguel Di Ciurcio Filho | raise errors.HypervisorError("vhost_net is configured" |
1816 | 5ae4945a | Iustin Pop | " but it is not available")
|
1817 | 37f88dc6 | Guido Trotter | else:
|
1818 | 4b784cf8 | Miguel Di Ciurcio Filho | nic_model = nic_type |
1819 | 37f88dc6 | Guido Trotter | |
1820 | 6f4070cd | Guido Trotter | kvm_supports_netdev = self._NETDEV_RE.search(kvmhelp)
|
1821 | 6f4070cd | Guido Trotter | |
1822 | ee5f20b0 | Guido Trotter | for nic_seq, nic in enumerate(kvm_nics): |
1823 | 6f1e1921 | Michael Hanselmann | tapname, tapfd = _OpenTap(vnet_hdr=vnet_hdr) |
1824 | 5d9bfd87 | Apollon Oikonomopoulos | tapfds.append(tapfd) |
1825 | 5d9bfd87 | Apollon Oikonomopoulos | taps.append(tapname) |
1826 | 6f4070cd | Guido Trotter | if kvm_supports_netdev:
|
1827 | 0288e7bf | Dimitris Aragiorgis | nic_val = "%s,mac=%s" % (nic_model, nic.mac)
|
1828 | 0288e7bf | Dimitris Aragiorgis | try:
|
1829 | 0288e7bf | Dimitris Aragiorgis | # kvm_nics already exist in old runtime files and thus there might
|
1830 | 0288e7bf | Dimitris Aragiorgis | # be some entries without pci slot (therefore try: except:)
|
1831 | 0288e7bf | Dimitris Aragiorgis | kvm_devid = _GenerateDeviceKVMId(constants.HOTPLUG_TARGET_NIC, nic) |
1832 | 0288e7bf | Dimitris Aragiorgis | netdev = kvm_devid |
1833 | 0288e7bf | Dimitris Aragiorgis | nic_val += (",id=%s,bus=pci.0,addr=%s" % (kvm_devid, hex(nic.pci))) |
1834 | 0288e7bf | Dimitris Aragiorgis | except errors.HotplugError:
|
1835 | 0288e7bf | Dimitris Aragiorgis | netdev = "netdev%d" % nic_seq
|
1836 | 0288e7bf | Dimitris Aragiorgis | nic_val += (",netdev=%s" % netdev)
|
1837 | 0288e7bf | Dimitris Aragiorgis | tap_val = ("type=tap,id=%s,fd=%d%s" %
|
1838 | 0288e7bf | Dimitris Aragiorgis | (netdev, tapfd, tap_extra)) |
1839 | 4b784cf8 | Miguel Di Ciurcio Filho | kvm_cmd.extend(["-netdev", tap_val, "-device", nic_val]) |
1840 | 4b784cf8 | Miguel Di Ciurcio Filho | else:
|
1841 | 049383d9 | Adeodato Simo | nic_val = "nic,vlan=%s,macaddr=%s,model=%s" % (nic_seq,
|
1842 | 049383d9 | Adeodato Simo | nic.mac, nic_model) |
1843 | 5d9bfd87 | Apollon Oikonomopoulos | tap_val = "tap,vlan=%s,fd=%d" % (nic_seq, tapfd)
|
1844 | 4b784cf8 | Miguel Di Ciurcio Filho | kvm_cmd.extend(["-net", tap_val, "-net", nic_val]) |
1845 | ee5f20b0 | Guido Trotter | |
1846 | 30e42c4e | Guido Trotter | if incoming:
|
1847 | 30e42c4e | Guido Trotter | target, port = incoming |
1848 | d0c8c01d | Iustin Pop | kvm_cmd.extend(["-incoming", "tcp:%s:%s" % (target, port)]) |
1849 | 30e42c4e | Guido Trotter | |
1850 | 297e6e53 | Guido Trotter | # Changing the vnc password doesn't bother the guest that much. At most it
|
1851 | 297e6e53 | Guido Trotter | # will surprise people who connect to it. Whether positively or negatively
|
1852 | 297e6e53 | Guido Trotter | # it's debatable.
|
1853 | 297e6e53 | Guido Trotter | vnc_pwd_file = conf_hvp[constants.HV_VNC_PASSWORD_FILE] |
1854 | 6e6bb8d5 | Guido Trotter | vnc_pwd = None
|
1855 | 6e6bb8d5 | Guido Trotter | if vnc_pwd_file:
|
1856 | 6e6bb8d5 | Guido Trotter | try:
|
1857 | 682f7601 | Guido Trotter | vnc_pwd = utils.ReadOneLineFile(vnc_pwd_file, strict=True)
|
1858 | 6e6bb8d5 | Guido Trotter | except EnvironmentError, err: |
1859 | 6e6bb8d5 | Guido Trotter | raise errors.HypervisorError("Failed to open VNC password file %s: %s" |
1860 | 6e6bb8d5 | Guido Trotter | % (vnc_pwd_file, err)) |
1861 | 6e6bb8d5 | Guido Trotter | |
1862 | 297e6e53 | Guido Trotter | if conf_hvp[constants.HV_KVM_USE_CHROOT]:
|
1863 | 547a63b7 | Balazs Lecz | utils.EnsureDirs([(self._InstanceChrootDir(name),
|
1864 | 547a63b7 | Balazs Lecz | constants.SECURE_DIR_MODE)]) |
1865 | 547a63b7 | Balazs Lecz | |
1866 | 91c10532 | Andrea Spadaccini | # Automatically enable QMP if version is >= 0.14
|
1867 | 0ad7f5d8 | Guido Trotter | if self._QMP_RE.search(kvmhelp): |
1868 | 91c10532 | Andrea Spadaccini | logging.debug("Enabling QMP")
|
1869 | 91c10532 | Andrea Spadaccini | kvm_cmd.extend(["-qmp", "unix:%s,server,nowait" % |
1870 | 5ae4945a | Iustin Pop | self._InstanceQmpMonitor(instance.name)])
|
1871 | 91c10532 | Andrea Spadaccini | |
1872 | cc8a8ed7 | Apollon Oikonomopoulos | # Configure the network now for starting instances and bridged interfaces,
|
1873 | cc8a8ed7 | Apollon Oikonomopoulos | # during FinalizeMigration for incoming instances' routed interfaces
|
1874 | cc8a8ed7 | Apollon Oikonomopoulos | for nic_seq, nic in enumerate(kvm_nics): |
1875 | cc8a8ed7 | Apollon Oikonomopoulos | if (incoming and |
1876 | cc8a8ed7 | Apollon Oikonomopoulos | nic.nicparams[constants.NIC_MODE] != constants.NIC_MODE_BRIDGED): |
1877 | cc8a8ed7 | Apollon Oikonomopoulos | continue
|
1878 | cc8a8ed7 | Apollon Oikonomopoulos | self._ConfigureNIC(instance, nic_seq, nic, taps[nic_seq])
|
1879 | 5d9bfd87 | Apollon Oikonomopoulos | |
1880 | 1d8a7812 | Andrea Spadaccini | # CPU affinity requires kvm to start paused, so we set this flag if the
|
1881 | 1d8a7812 | Andrea Spadaccini | # instance is not already paused and if we are not going to accept a
|
1882 | 1d8a7812 | Andrea Spadaccini | # migrating instance. In the latter case, pausing is not needed.
|
1883 | 1d8a7812 | Andrea Spadaccini | start_kvm_paused = not (_KVM_START_PAUSED_FLAG in kvm_cmd) and not incoming |
1884 | 945a7e67 | Guido Trotter | if start_kvm_paused:
|
1885 | 945a7e67 | Guido Trotter | kvm_cmd.extend([_KVM_START_PAUSED_FLAG]) |
1886 | b693125f | Tsachy Shacham | |
1887 | b693125f | Tsachy Shacham | # Note: CPU pinning is using up_hvp since changes take effect
|
1888 | b693125f | Tsachy Shacham | # during instance startup anyway, and to avoid problems when soft
|
1889 | b693125f | Tsachy Shacham | # rebooting the instance.
|
1890 | c607b1f7 | Tsachy Shacham | cpu_pinning = False
|
1891 | b693125f | Tsachy Shacham | if up_hvp.get(constants.HV_CPU_MASK, None): |
1892 | b693125f | Tsachy Shacham | cpu_pinning = True
|
1893 | b693125f | Tsachy Shacham | |
1894 | 76431533 | Guido Trotter | if security_model == constants.HT_SM_POOL:
|
1895 | 76431533 | Guido Trotter | ss = ssconf.SimpleStore() |
1896 | 76431533 | Guido Trotter | uid_pool = uidpool.ParseUidPool(ss.GetUidPool(), separator="\n")
|
1897 | 76431533 | Guido Trotter | all_uids = set(uidpool.ExpandUidPool(uid_pool))
|
1898 | 76431533 | Guido Trotter | uid = uidpool.RequestUnusedUid(all_uids) |
1899 | 76431533 | Guido Trotter | try:
|
1900 | 76431533 | Guido Trotter | username = pwd.getpwuid(uid.GetUid()).pw_name |
1901 | 76431533 | Guido Trotter | kvm_cmd.extend(["-runas", username])
|
1902 | 5d9bfd87 | Apollon Oikonomopoulos | self._RunKVMCmd(name, kvm_cmd, tapfds)
|
1903 | 76431533 | Guido Trotter | except:
|
1904 | 76431533 | Guido Trotter | uidpool.ReleaseUid(uid) |
1905 | 76431533 | Guido Trotter | raise
|
1906 | 76431533 | Guido Trotter | else:
|
1907 | 76431533 | Guido Trotter | uid.Unlock() |
1908 | 3af16328 | Apollon Oikonomopoulos | utils.WriteFile(self._InstanceUidFile(name), data=uid.AsStr())
|
1909 | 76431533 | Guido Trotter | else:
|
1910 | 5d9bfd87 | Apollon Oikonomopoulos | self._RunKVMCmd(name, kvm_cmd, tapfds)
|
1911 | 5d9bfd87 | Apollon Oikonomopoulos | |
1912 | 5d9bfd87 | Apollon Oikonomopoulos | utils.EnsureDirs([(self._InstanceNICDir(instance.name),
|
1913 | 5d9bfd87 | Apollon Oikonomopoulos | constants.RUN_DIRS_MODE)]) |
1914 | 5d9bfd87 | Apollon Oikonomopoulos | for nic_seq, tap in enumerate(taps): |
1915 | 5d9bfd87 | Apollon Oikonomopoulos | utils.WriteFile(self._InstanceNICFile(instance.name, nic_seq),
|
1916 | 5d9bfd87 | Apollon Oikonomopoulos | data=tap) |
1917 | eb58f9b1 | Guido Trotter | |
1918 | 6e6bb8d5 | Guido Trotter | if vnc_pwd:
|
1919 | d0c8c01d | Iustin Pop | change_cmd = "change vnc password %s" % vnc_pwd
|
1920 | 6e6bb8d5 | Guido Trotter | self._CallMonitorCommand(instance.name, change_cmd)
|
1921 | 6e6bb8d5 | Guido Trotter | |
1922 | b451c4c7 | Andrea Spadaccini | # Setting SPICE password. We are not vulnerable to malicious passwordless
|
1923 | b451c4c7 | Andrea Spadaccini | # connection attempts because SPICE by default does not allow connections
|
1924 | b451c4c7 | Andrea Spadaccini | # if neither a password nor the "disable_ticketing" options are specified.
|
1925 | b451c4c7 | Andrea Spadaccini | # As soon as we send the password via QMP, that password is a valid ticket
|
1926 | b451c4c7 | Andrea Spadaccini | # for connection.
|
1927 | b451c4c7 | Andrea Spadaccini | spice_password_file = conf_hvp[constants.HV_KVM_SPICE_PASSWORD_FILE] |
1928 | b451c4c7 | Andrea Spadaccini | if spice_password_file:
|
1929 | fc84cd5d | Guido Trotter | spice_pwd = ""
|
1930 | b451c4c7 | Andrea Spadaccini | try:
|
1931 | b451c4c7 | Andrea Spadaccini | spice_pwd = utils.ReadOneLineFile(spice_password_file, strict=True)
|
1932 | b451c4c7 | Andrea Spadaccini | except EnvironmentError, err: |
1933 | b451c4c7 | Andrea Spadaccini | raise errors.HypervisorError("Failed to open SPICE password file %s: %s" |
1934 | b451c4c7 | Andrea Spadaccini | % (spice_password_file, err)) |
1935 | b451c4c7 | Andrea Spadaccini | |
1936 | fc84cd5d | Guido Trotter | qmp = QmpConnection(self._InstanceQmpMonitor(instance.name))
|
1937 | fc84cd5d | Guido Trotter | qmp.connect() |
1938 | fc84cd5d | Guido Trotter | arguments = { |
1939 | fc84cd5d | Guido Trotter | "protocol": "spice", |
1940 | fc84cd5d | Guido Trotter | "password": spice_pwd,
|
1941 | fc84cd5d | Guido Trotter | } |
1942 | fc84cd5d | Guido Trotter | qmp.Execute("set_password", arguments)
|
1943 | fc84cd5d | Guido Trotter | |
1944 | 08137f9e | Iustin Pop | for filename in temp_files: |
1945 | 08137f9e | Iustin Pop | utils.RemoveFile(filename) |
1946 | eb58f9b1 | Guido Trotter | |
1947 | b693125f | Tsachy Shacham | # If requested, set CPU affinity and resume instance execution
|
1948 | b693125f | Tsachy Shacham | if cpu_pinning:
|
1949 | 945a7e67 | Guido Trotter | self._ExecuteCpuAffinity(instance.name, up_hvp[constants.HV_CPU_MASK])
|
1950 | 945a7e67 | Guido Trotter | |
1951 | 61eb1a46 | Guido Trotter | start_memory = self._InstanceStartupMemory(instance)
|
1952 | 61eb1a46 | Guido Trotter | if start_memory < instance.beparams[constants.BE_MAXMEM]:
|
1953 | 61eb1a46 | Guido Trotter | self.BalloonInstanceMemory(instance, start_memory)
|
1954 | 61eb1a46 | Guido Trotter | |
1955 | 945a7e67 | Guido Trotter | if start_kvm_paused:
|
1956 | 2ed0e208 | Iustin Pop | # To control CPU pinning, ballooning, and vnc/spice passwords
|
1957 | 2ed0e208 | Iustin Pop | # the VM was started in a frozen state. If freezing was not
|
1958 | 2ed0e208 | Iustin Pop | # explicitly requested resume the vm status.
|
1959 | 945a7e67 | Guido Trotter | self._CallMonitorCommand(instance.name, self._CONT_CMD) |
1960 | b693125f | Tsachy Shacham | |
1961 | 323f9095 | Stephen Shirley | def StartInstance(self, instance, block_devices, startup_paused): |
1962 | ee5f20b0 | Guido Trotter | """Start an instance.
|
1963 | ee5f20b0 | Guido Trotter |
|
1964 | ee5f20b0 | Guido Trotter | """
|
1965 | 5905901c | Iustin Pop | self._CheckDown(instance.name)
|
1966 | 4b9638dc | Guido Trotter | kvmpath = instance.hvparams[constants.HV_KVM_PATH] |
1967 | 6e043e60 | Guido Trotter | kvmhelp = self._GetKVMOutput(kvmpath, self._KVMOPT_HELP) |
1968 | 7238edb5 | Iustin Pop | kvm_runtime = self._GenerateKVMRuntime(instance, block_devices,
|
1969 | b73f1c59 | Guido Trotter | startup_paused, kvmhelp) |
1970 | 38e250ba | Guido Trotter | self._SaveKVMRuntime(instance, kvm_runtime)
|
1971 | b73f1c59 | Guido Trotter | self._ExecuteKVMRuntime(instance, kvm_runtime, kvmhelp)
|
1972 | ee5f20b0 | Guido Trotter | |
1973 | 6567aff3 | Guido Trotter | def _CallMonitorCommand(self, instance_name, command): |
1974 | 6567aff3 | Guido Trotter | """Invoke a command on the instance monitor.
|
1975 | 6567aff3 | Guido Trotter |
|
1976 | 6567aff3 | Guido Trotter | """
|
1977 | eace6157 | Michael Hanselmann | # TODO: Replace monitor calls with QMP once KVM >= 0.14 is the minimum
|
1978 | eace6157 | Michael Hanselmann | # version. The monitor protocol is designed for human consumption, whereas
|
1979 | eace6157 | Michael Hanselmann | # QMP is made for programmatic usage. In the worst case QMP can also
|
1980 | eace6157 | Michael Hanselmann | # execute monitor commands. As it is, all calls to socat take at least
|
1981 | eace6157 | Michael Hanselmann | # 500ms and likely more: socat can't detect the end of the reply and waits
|
1982 | eace6157 | Michael Hanselmann | # for 500ms of no data received before exiting (500 ms is the default for
|
1983 | eace6157 | Michael Hanselmann | # the "-t" parameter).
|
1984 | 6567aff3 | Guido Trotter | socat = ("echo %s | %s STDIO UNIX-CONNECT:%s" %
|
1985 | 6567aff3 | Guido Trotter | (utils.ShellQuote(command), |
1986 | 6567aff3 | Guido Trotter | constants.SOCAT_PATH, |
1987 | 6567aff3 | Guido Trotter | utils.ShellQuote(self._InstanceMonitor(instance_name))))
|
1988 | 6567aff3 | Guido Trotter | result = utils.RunCmd(socat) |
1989 | 6567aff3 | Guido Trotter | if result.failed:
|
1990 | afa9bb2e | Michael Hanselmann | msg = ("Failed to send command '%s' to instance '%s', reason '%s',"
|
1991 | afa9bb2e | Michael Hanselmann | " output: %s" %
|
1992 | afa9bb2e | Michael Hanselmann | (command, instance_name, result.fail_reason, result.output)) |
1993 | 6567aff3 | Guido Trotter | raise errors.HypervisorError(msg)
|
1994 | 6567aff3 | Guido Trotter | |
1995 | 6567aff3 | Guido Trotter | return result
|
1996 | 6567aff3 | Guido Trotter | |
1997 | 8b7be6f2 | Dimitris Aragiorgis | def _GetFreePCISlot(self, instance, dev): |
1998 | 8b7be6f2 | Dimitris Aragiorgis | """Get the first available pci slot of a runnung instance.
|
1999 | 8b7be6f2 | Dimitris Aragiorgis |
|
2000 | 8b7be6f2 | Dimitris Aragiorgis | """
|
2001 | 8b7be6f2 | Dimitris Aragiorgis | slots = bitarray(32)
|
2002 | 8b7be6f2 | Dimitris Aragiorgis | slots.setall(False) # pylint: disable=E1101 |
2003 | 8b7be6f2 | Dimitris Aragiorgis | output = self._CallMonitorCommand(instance.name, self._INFO_PCI_CMD) |
2004 | 8b7be6f2 | Dimitris Aragiorgis | for line in output.stdout.splitlines(): |
2005 | 8b7be6f2 | Dimitris Aragiorgis | match = self._INFO_PCI_RE.search(line)
|
2006 | 8b7be6f2 | Dimitris Aragiorgis | if match:
|
2007 | 8b7be6f2 | Dimitris Aragiorgis | slot = int(match.group(1)) |
2008 | 8b7be6f2 | Dimitris Aragiorgis | slots[slot] = True
|
2009 | 8b7be6f2 | Dimitris Aragiorgis | |
2010 | 8b7be6f2 | Dimitris Aragiorgis | [free] = slots.search(_AVAILABLE_PCI_SLOT, 1) # pylint: disable=E1101 |
2011 | 8b7be6f2 | Dimitris Aragiorgis | if not free: |
2012 | 8b7be6f2 | Dimitris Aragiorgis | raise errors.HypervisorError("All PCI slots occupied") |
2013 | 8b7be6f2 | Dimitris Aragiorgis | |
2014 | 8b7be6f2 | Dimitris Aragiorgis | dev.pci = int(free)
|
2015 | 8b7be6f2 | Dimitris Aragiorgis | |
2016 | 9f395c32 | Dimitris Aragiorgis | def VerifyHotplugSupport(self, instance, action, dev_type): |
2017 | 9f395c32 | Dimitris Aragiorgis | """Verifies that hotplug is supported.
|
2018 | d7583563 | Dimitris Aragiorgis |
|
2019 | d7583563 | Dimitris Aragiorgis | Hotplug is *not* supported in case of:
|
2020 | d7583563 | Dimitris Aragiorgis | - security models and chroot (disk hotplug)
|
2021 | d7583563 | Dimitris Aragiorgis | - fdsend module is missing (nic hot-add)
|
2022 | d7583563 | Dimitris Aragiorgis |
|
2023 | 9f395c32 | Dimitris Aragiorgis | @raise errors.HypervisorError: in one of the previous cases
|
2024 | d7583563 | Dimitris Aragiorgis |
|
2025 | d7583563 | Dimitris Aragiorgis | """
|
2026 | d7583563 | Dimitris Aragiorgis | if dev_type == constants.HOTPLUG_TARGET_DISK:
|
2027 | d7583563 | Dimitris Aragiorgis | hvp = instance.hvparams |
2028 | d7583563 | Dimitris Aragiorgis | security_model = hvp[constants.HV_SECURITY_MODEL] |
2029 | d7583563 | Dimitris Aragiorgis | use_chroot = hvp[constants.HV_KVM_USE_CHROOT] |
2030 | d7583563 | Dimitris Aragiorgis | if use_chroot:
|
2031 | d7583563 | Dimitris Aragiorgis | raise errors.HotplugError("Disk hotplug is not supported" |
2032 | d7583563 | Dimitris Aragiorgis | " in case of chroot.")
|
2033 | d7583563 | Dimitris Aragiorgis | if security_model != constants.HT_SM_NONE:
|
2034 | d7583563 | Dimitris Aragiorgis | raise errors.HotplugError("Disk Hotplug is not supported in case" |
2035 | d7583563 | Dimitris Aragiorgis | " security models are used.")
|
2036 | d7583563 | Dimitris Aragiorgis | |
2037 | d7583563 | Dimitris Aragiorgis | if (dev_type == constants.HOTPLUG_TARGET_NIC and |
2038 | d7583563 | Dimitris Aragiorgis | action == constants.HOTPLUG_ACTION_ADD and not fdsend): |
2039 | d7583563 | Dimitris Aragiorgis | raise errors.HotplugError("Cannot hot-add NIC." |
2040 | d7583563 | Dimitris Aragiorgis | " fdsend python module is missing.")
|
2041 | d7583563 | Dimitris Aragiorgis | |
2042 | caf74756 | Dimitris Aragiorgis | def HotplugSupported(self, instance): |
2043 | caf74756 | Dimitris Aragiorgis | """Checks if hotplug is generally supported.
|
2044 | caf74756 | Dimitris Aragiorgis |
|
2045 | caf74756 | Dimitris Aragiorgis | Hotplug is *not* supported in case of:
|
2046 | caf74756 | Dimitris Aragiorgis | - qemu versions < 1.0
|
2047 | caf74756 | Dimitris Aragiorgis | - for stopped instances
|
2048 | caf74756 | Dimitris Aragiorgis |
|
2049 | caf74756 | Dimitris Aragiorgis | @raise errors.HypervisorError: in one of the previous cases
|
2050 | caf74756 | Dimitris Aragiorgis |
|
2051 | caf74756 | Dimitris Aragiorgis | """
|
2052 | e7a77eb8 | Dimitris Aragiorgis | try:
|
2053 | e7a77eb8 | Dimitris Aragiorgis | output = self._CallMonitorCommand(instance.name, self._INFO_VERSION_CMD) |
2054 | e7a77eb8 | Dimitris Aragiorgis | except errors.HypervisorError:
|
2055 | e7a77eb8 | Dimitris Aragiorgis | raise errors.HotplugError("Instance is probably down") |
2056 | e7a77eb8 | Dimitris Aragiorgis | |
2057 | caf74756 | Dimitris Aragiorgis | # TODO: search for netdev_add, drive_add, device_add.....
|
2058 | caf74756 | Dimitris Aragiorgis | match = self._INFO_VERSION_RE.search(output.stdout)
|
2059 | caf74756 | Dimitris Aragiorgis | if not match: |
2060 | e7a77eb8 | Dimitris Aragiorgis | raise errors.HotplugError("Cannot parse qemu version via monitor") |
2061 | e7a77eb8 | Dimitris Aragiorgis | |
2062 | caf74756 | Dimitris Aragiorgis | v_major, v_min, _, _ = match.groups() |
2063 | caf74756 | Dimitris Aragiorgis | if (int(v_major), int(v_min)) < (1, 0): |
2064 | caf74756 | Dimitris Aragiorgis | raise errors.HotplugError("Hotplug not supported for qemu versions < 1.0") |
2065 | caf74756 | Dimitris Aragiorgis | |
2066 | d7583563 | Dimitris Aragiorgis | def _CallHotplugCommand(self, name, cmd): |
2067 | d7583563 | Dimitris Aragiorgis | output = self._CallMonitorCommand(name, cmd)
|
2068 | d7583563 | Dimitris Aragiorgis | # TODO: parse output and check if succeeded
|
2069 | d7583563 | Dimitris Aragiorgis | for line in output.stdout.splitlines(): |
2070 | d7583563 | Dimitris Aragiorgis | logging.info("%s", line)
|
2071 | d7583563 | Dimitris Aragiorgis | |
2072 | af2f716d | Dimitris Aragiorgis | def HotAddDevice(self, instance, dev_type, device, extra, seq): |
2073 | af2f716d | Dimitris Aragiorgis | """ Helper method to hot-add a new device
|
2074 | af2f716d | Dimitris Aragiorgis |
|
2075 | af2f716d | Dimitris Aragiorgis | It gets free pci slot generates the device name and invokes the
|
2076 | af2f716d | Dimitris Aragiorgis | device specific method.
|
2077 | af2f716d | Dimitris Aragiorgis |
|
2078 | af2f716d | Dimitris Aragiorgis | """
|
2079 | af2f716d | Dimitris Aragiorgis | # in case of hot-mod this is given
|
2080 | af2f716d | Dimitris Aragiorgis | if device.pci is None: |
2081 | af2f716d | Dimitris Aragiorgis | self._GetFreePCISlot(instance, device)
|
2082 | af2f716d | Dimitris Aragiorgis | kvm_devid = _GenerateDeviceKVMId(dev_type, device) |
2083 | af2f716d | Dimitris Aragiorgis | runtime = self._LoadKVMRuntime(instance)
|
2084 | af2f716d | Dimitris Aragiorgis | if dev_type == constants.HOTPLUG_TARGET_DISK:
|
2085 | af2f716d | Dimitris Aragiorgis | command = "drive_add dummy file=%s,if=none,id=%s,format=raw\n" % \
|
2086 | af2f716d | Dimitris Aragiorgis | (extra, kvm_devid) |
2087 | af2f716d | Dimitris Aragiorgis | command += ("device_add virtio-blk-pci,bus=pci.0,addr=%s,drive=%s,id=%s" %
|
2088 | af2f716d | Dimitris Aragiorgis | (hex(device.pci), kvm_devid, kvm_devid))
|
2089 | af2f716d | Dimitris Aragiorgis | elif dev_type == constants.HOTPLUG_TARGET_NIC:
|
2090 | af2f716d | Dimitris Aragiorgis | (tap, fd) = _OpenTap() |
2091 | af2f716d | Dimitris Aragiorgis | self._ConfigureNIC(instance, seq, device, tap)
|
2092 | af2f716d | Dimitris Aragiorgis | self._PassTapFd(instance, fd, device)
|
2093 | af2f716d | Dimitris Aragiorgis | command = "netdev_add tap,id=%s,fd=%s\n" % (kvm_devid, kvm_devid)
|
2094 | af2f716d | Dimitris Aragiorgis | args = "virtio-net-pci,bus=pci.0,addr=%s,mac=%s,netdev=%s,id=%s" % \
|
2095 | af2f716d | Dimitris Aragiorgis | (hex(device.pci), device.mac, kvm_devid, kvm_devid)
|
2096 | af2f716d | Dimitris Aragiorgis | command += "device_add %s" % args
|
2097 | af2f716d | Dimitris Aragiorgis | utils.WriteFile(self._InstanceNICFile(instance.name, seq), data=tap)
|
2098 | af2f716d | Dimitris Aragiorgis | |
2099 | af2f716d | Dimitris Aragiorgis | self._CallHotplugCommand(instance.name, command)
|
2100 | af2f716d | Dimitris Aragiorgis | # update relevant entries in runtime file
|
2101 | af2f716d | Dimitris Aragiorgis | index = _DEVICE_RUNTIME_INDEX[dev_type] |
2102 | af2f716d | Dimitris Aragiorgis | entry = _RUNTIME_ENTRY[dev_type](device, extra) |
2103 | af2f716d | Dimitris Aragiorgis | runtime[index].append(entry) |
2104 | af2f716d | Dimitris Aragiorgis | self._SaveKVMRuntime(instance, runtime)
|
2105 | af2f716d | Dimitris Aragiorgis | |
2106 | af2f716d | Dimitris Aragiorgis | def HotDelDevice(self, instance, dev_type, device, _, seq): |
2107 | af2f716d | Dimitris Aragiorgis | """ Helper method for hot-del device
|
2108 | af2f716d | Dimitris Aragiorgis |
|
2109 | af2f716d | Dimitris Aragiorgis | It gets device info from runtime file, generates the device name and
|
2110 | af2f716d | Dimitris Aragiorgis | invokes the device specific method.
|
2111 | af2f716d | Dimitris Aragiorgis |
|
2112 | af2f716d | Dimitris Aragiorgis | """
|
2113 | af2f716d | Dimitris Aragiorgis | runtime = self._LoadKVMRuntime(instance)
|
2114 | af2f716d | Dimitris Aragiorgis | entry = _GetExistingDeviceInfo(dev_type, device, runtime) |
2115 | af2f716d | Dimitris Aragiorgis | kvm_device = _RUNTIME_DEVICE[dev_type](entry) |
2116 | af2f716d | Dimitris Aragiorgis | kvm_devid = _GenerateDeviceKVMId(dev_type, kvm_device) |
2117 | af2f716d | Dimitris Aragiorgis | if dev_type == constants.HOTPLUG_TARGET_DISK:
|
2118 | 1c6c4d6d | Dimitris Aragiorgis | command = "device_del %s\n" % kvm_devid
|
2119 | 1c6c4d6d | Dimitris Aragiorgis | command += "drive_del %s" % kvm_devid
|
2120 | af2f716d | Dimitris Aragiorgis | elif dev_type == constants.HOTPLUG_TARGET_NIC:
|
2121 | af2f716d | Dimitris Aragiorgis | command = "device_del %s\n" % kvm_devid
|
2122 | af2f716d | Dimitris Aragiorgis | command += "netdev_del %s" % kvm_devid
|
2123 | af2f716d | Dimitris Aragiorgis | utils.RemoveFile(self._InstanceNICFile(instance.name, seq))
|
2124 | af2f716d | Dimitris Aragiorgis | self._CallHotplugCommand(instance.name, command)
|
2125 | af2f716d | Dimitris Aragiorgis | index = _DEVICE_RUNTIME_INDEX[dev_type] |
2126 | af2f716d | Dimitris Aragiorgis | runtime[index].remove(entry) |
2127 | af2f716d | Dimitris Aragiorgis | self._SaveKVMRuntime(instance, runtime)
|
2128 | af2f716d | Dimitris Aragiorgis | |
2129 | af2f716d | Dimitris Aragiorgis | return kvm_device.pci
|
2130 | af2f716d | Dimitris Aragiorgis | |
2131 | af2f716d | Dimitris Aragiorgis | def HotModDevice(self, instance, dev_type, device, _, seq): |
2132 | af2f716d | Dimitris Aragiorgis | """ Helper method for hot-mod device
|
2133 | af2f716d | Dimitris Aragiorgis |
|
2134 | af2f716d | Dimitris Aragiorgis | It gets device info from runtime file, generates the device name and
|
2135 | af2f716d | Dimitris Aragiorgis | invokes the device specific method. Currently only NICs support hot-mod
|
2136 | af2f716d | Dimitris Aragiorgis |
|
2137 | af2f716d | Dimitris Aragiorgis | """
|
2138 | af2f716d | Dimitris Aragiorgis | if dev_type == constants.HOTPLUG_TARGET_NIC:
|
2139 | af2f716d | Dimitris Aragiorgis | # putting it back in the same pci slot
|
2140 | af2f716d | Dimitris Aragiorgis | device.pci = self.HotDelDevice(instance, dev_type, device, _, seq)
|
2141 | af2f716d | Dimitris Aragiorgis | # TODO: remove sleep when socat gets removed
|
2142 | af2f716d | Dimitris Aragiorgis | time.sleep(2)
|
2143 | af2f716d | Dimitris Aragiorgis | self.HotAddDevice(instance, dev_type, device, _, seq)
|
2144 | af2f716d | Dimitris Aragiorgis | |
2145 | af2f716d | Dimitris Aragiorgis | def _PassTapFd(self, instance, fd, nic): |
2146 | af2f716d | Dimitris Aragiorgis | """Pass file descriptor to kvm process via monitor socket using SCM_RIGHTS
|
2147 | af2f716d | Dimitris Aragiorgis |
|
2148 | af2f716d | Dimitris Aragiorgis | """
|
2149 | af2f716d | Dimitris Aragiorgis | # TODO: factor out code related to unix sockets.
|
2150 | af2f716d | Dimitris Aragiorgis | # squash common parts between monitor and qmp
|
2151 | af2f716d | Dimitris Aragiorgis | kvm_devid = _GenerateDeviceKVMId(constants.HOTPLUG_TARGET_NIC, nic) |
2152 | af2f716d | Dimitris Aragiorgis | command = "getfd %s\n" % kvm_devid
|
2153 | af2f716d | Dimitris Aragiorgis | fds = [fd] |
2154 | af2f716d | Dimitris Aragiorgis | logging.info("%s", fds)
|
2155 | af2f716d | Dimitris Aragiorgis | try:
|
2156 | af2f716d | Dimitris Aragiorgis | monsock = MonitorSocket(self._InstanceMonitor(instance.name))
|
2157 | af2f716d | Dimitris Aragiorgis | monsock.connect() |
2158 | af2f716d | Dimitris Aragiorgis | fdsend.sendfds(monsock.sock, command, fds=fds) |
2159 | af2f716d | Dimitris Aragiorgis | finally:
|
2160 | af2f716d | Dimitris Aragiorgis | monsock.close() |
2161 | af2f716d | Dimitris Aragiorgis | |
2162 | b52d85c1 | Guido Trotter | @classmethod
|
2163 | 585c8187 | Guido Trotter | def _ParseKVMVersion(cls, text): |
2164 | 585c8187 | Guido Trotter | """Parse the KVM version from the --help output.
|
2165 | 585c8187 | Guido Trotter |
|
2166 | 585c8187 | Guido Trotter | @type text: string
|
2167 | 585c8187 | Guido Trotter | @param text: output of kvm --help
|
2168 | 585c8187 | Guido Trotter | @return: (version, v_maj, v_min, v_rev)
|
2169 | 5c3d5dfd | Iustin Pop | @raise errors.HypervisorError: when the KVM version cannot be retrieved
|
2170 | 585c8187 | Guido Trotter |
|
2171 | 585c8187 | Guido Trotter | """
|
2172 | 585c8187 | Guido Trotter | match = cls._VERSION_RE.search(text.splitlines()[0])
|
2173 | 585c8187 | Guido Trotter | if not match: |
2174 | 585c8187 | Guido Trotter | raise errors.HypervisorError("Unable to get KVM version") |
2175 | 585c8187 | Guido Trotter | |
2176 | 585c8187 | Guido Trotter | v_all = match.group(0)
|
2177 | 585c8187 | Guido Trotter | v_maj = int(match.group(1)) |
2178 | 585c8187 | Guido Trotter | v_min = int(match.group(2)) |
2179 | 585c8187 | Guido Trotter | if match.group(4): |
2180 | 585c8187 | Guido Trotter | v_rev = int(match.group(4)) |
2181 | 585c8187 | Guido Trotter | else:
|
2182 | 585c8187 | Guido Trotter | v_rev = 0
|
2183 | 585c8187 | Guido Trotter | return (v_all, v_maj, v_min, v_rev)
|
2184 | 585c8187 | Guido Trotter | |
2185 | 585c8187 | Guido Trotter | @classmethod
|
2186 | 6e043e60 | Guido Trotter | def _GetKVMOutput(cls, kvm_path, option): |
2187 | 6e043e60 | Guido Trotter | """Return the output of a kvm invocation
|
2188 | e3b89628 | Guido Trotter |
|
2189 | bc0fed4b | Guido Trotter | @type kvm_path: string
|
2190 | bc0fed4b | Guido Trotter | @param kvm_path: path to the kvm executable
|
2191 | bc0fed4b | Guido Trotter | @type option: a key of _KVMOPTS_CMDS
|
2192 | bc0fed4b | Guido Trotter | @param option: kvm option to fetch the output from
|
2193 | 6e043e60 | Guido Trotter | @return: output a supported kvm invocation
|
2194 | e3b89628 | Guido Trotter | @raise errors.HypervisorError: when the KVM help output cannot be retrieved
|
2195 | e3b89628 | Guido Trotter |
|
2196 | e3b89628 | Guido Trotter | """
|
2197 | 6e043e60 | Guido Trotter | assert option in cls._KVMOPTS_CMDS, "Invalid output option" |
2198 | 6e043e60 | Guido Trotter | |
2199 | bc0fed4b | Guido Trotter | optlist, can_fail = cls._KVMOPTS_CMDS[option] |
2200 | bc0fed4b | Guido Trotter | |
2201 | bc0fed4b | Guido Trotter | result = utils.RunCmd([kvm_path] + optlist) |
2202 | bc0fed4b | Guido Trotter | if result.failed and not can_fail: |
2203 | af89fa76 | Helga Velroyen | raise errors.HypervisorError("Unable to get KVM %s output" % |
2204 | 3ddc7650 | Jose A. Lopes | " ".join(optlist))
|
2205 | e3b89628 | Guido Trotter | return result.output
|
2206 | e3b89628 | Guido Trotter | |
2207 | e3b89628 | Guido Trotter | @classmethod
|
2208 | 3b59ec02 | Guido Trotter | def _GetKVMVersion(cls, kvm_path): |
2209 | d7e4a2b1 | Andrea Spadaccini | """Return the installed KVM version.
|
2210 | b52d85c1 | Guido Trotter |
|
2211 | 440351f8 | Andrea Spadaccini | @return: (version, v_maj, v_min, v_rev)
|
2212 | 5c3d5dfd | Iustin Pop | @raise errors.HypervisorError: when the KVM version cannot be retrieved
|
2213 | b52d85c1 | Guido Trotter |
|
2214 | b52d85c1 | Guido Trotter | """
|
2215 | 6e043e60 | Guido Trotter | return cls._ParseKVMVersion(cls._GetKVMOutput(kvm_path, cls._KVMOPT_HELP))
|
2216 | 82e3bf85 | Dimitris Aragiorgis | |
2217 | 82e3bf85 | Dimitris Aragiorgis | @classmethod
|
2218 | 82e3bf85 | Dimitris Aragiorgis | def _GetDefaultMachineVersion(cls, kvm_path): |
2219 | 82e3bf85 | Dimitris Aragiorgis | """Return the default hardware revision (e.g. pc-1.1)
|
2220 | 82e3bf85 | Dimitris Aragiorgis |
|
2221 | 82e3bf85 | Dimitris Aragiorgis | """
|
2222 | 6e043e60 | Guido Trotter | output = cls._GetKVMOutput(kvm_path, cls._KVMOPT_MLIST) |
2223 | 82e3bf85 | Dimitris Aragiorgis | match = cls._DEFAULT_MACHINE_VERSION_RE.search(output) |
2224 | 82e3bf85 | Dimitris Aragiorgis | if match:
|
2225 | 82e3bf85 | Dimitris Aragiorgis | return match.group(1) |
2226 | 82e3bf85 | Dimitris Aragiorgis | else:
|
2227 | 82e3bf85 | Dimitris Aragiorgis | return "pc" |
2228 | 82e3bf85 | Dimitris Aragiorgis | |
2229 | bbcf7ad0 | Iustin Pop | def StopInstance(self, instance, force=False, retry=False, name=None): |
2230 | eb58f9b1 | Guido Trotter | """Stop an instance.
|
2231 | eb58f9b1 | Guido Trotter |
|
2232 | eb58f9b1 | Guido Trotter | """
|
2233 | bbcf7ad0 | Iustin Pop | if name is not None and not force: |
2234 | bbcf7ad0 | Iustin Pop | raise errors.HypervisorError("Cannot shutdown cleanly by name only") |
2235 | bbcf7ad0 | Iustin Pop | if name is None: |
2236 | bbcf7ad0 | Iustin Pop | name = instance.name |
2237 | bbcf7ad0 | Iustin Pop | acpi = instance.hvparams[constants.HV_ACPI] |
2238 | bbcf7ad0 | Iustin Pop | else:
|
2239 | bbcf7ad0 | Iustin Pop | acpi = False
|
2240 | 8904b35c | Guido Trotter | _, pid, alive = self._InstancePidAlive(name)
|
2241 | 1f8b3a27 | Guido Trotter | if pid > 0 and alive: |
2242 | bbcf7ad0 | Iustin Pop | if force or not acpi: |
2243 | eb58f9b1 | Guido Trotter | utils.KillProcess(pid) |
2244 | eb58f9b1 | Guido Trotter | else:
|
2245 | d0c8c01d | Iustin Pop | self._CallMonitorCommand(name, "system_powerdown") |
2246 | eb58f9b1 | Guido Trotter | |
2247 | 8904b35c | Guido Trotter | def CleanupInstance(self, instance_name): |
2248 | 8904b35c | Guido Trotter | """Cleanup after a stopped instance
|
2249 | 8904b35c | Guido Trotter |
|
2250 | 8904b35c | Guido Trotter | """
|
2251 | 8904b35c | Guido Trotter | pidfile, pid, alive = self._InstancePidAlive(instance_name)
|
2252 | 8904b35c | Guido Trotter | if pid > 0 and alive: |
2253 | 8904b35c | Guido Trotter | raise errors.HypervisorError("Cannot cleanup a live instance") |
2254 | 8904b35c | Guido Trotter | self._RemoveInstanceRuntimeFiles(pidfile, instance_name)
|
2255 | eb58f9b1 | Guido Trotter | |
2256 | eb58f9b1 | Guido Trotter | def RebootInstance(self, instance): |
2257 | eb58f9b1 | Guido Trotter | """Reboot an instance.
|
2258 | eb58f9b1 | Guido Trotter |
|
2259 | eb58f9b1 | Guido Trotter | """
|
2260 | eb58f9b1 | Guido Trotter | # For some reason if we do a 'send-key ctrl-alt-delete' to the control
|
2261 | eb58f9b1 | Guido Trotter | # socket the instance will stop, but now power up again. So we'll resort
|
2262 | eb58f9b1 | Guido Trotter | # to shutdown and restart.
|
2263 | 1122eb25 | Iustin Pop | _, _, alive = self._InstancePidAlive(instance.name)
|
2264 | 1f8b3a27 | Guido Trotter | if not alive: |
2265 | 78411c60 | Iustin Pop | raise errors.HypervisorError("Failed to reboot instance %s:" |
2266 | 78411c60 | Iustin Pop | " not running" % instance.name)
|
2267 | f02881e0 | Guido Trotter | # StopInstance will delete the saved KVM runtime so:
|
2268 | f02881e0 | Guido Trotter | # ...first load it...
|
2269 | f02881e0 | Guido Trotter | kvm_runtime = self._LoadKVMRuntime(instance)
|
2270 | f02881e0 | Guido Trotter | # ...now we can safely call StopInstance...
|
2271 | f02881e0 | Guido Trotter | if not self.StopInstance(instance): |
2272 | f02881e0 | Guido Trotter | self.StopInstance(instance, force=True) |
2273 | f02881e0 | Guido Trotter | # ...and finally we can save it again, and execute it...
|
2274 | f02881e0 | Guido Trotter | self._SaveKVMRuntime(instance, kvm_runtime)
|
2275 | 4b9638dc | Guido Trotter | kvmpath = instance.hvparams[constants.HV_KVM_PATH] |
2276 | 6e043e60 | Guido Trotter | kvmhelp = self._GetKVMOutput(kvmpath, self._KVMOPT_HELP) |
2277 | b73f1c59 | Guido Trotter | self._ExecuteKVMRuntime(instance, kvm_runtime, kvmhelp)
|
2278 | eb58f9b1 | Guido Trotter | |
2279 | 30e42c4e | Guido Trotter | def MigrationInfo(self, instance): |
2280 | 30e42c4e | Guido Trotter | """Get instance information to perform a migration.
|
2281 | 30e42c4e | Guido Trotter |
|
2282 | 30e42c4e | Guido Trotter | @type instance: L{objects.Instance}
|
2283 | 30e42c4e | Guido Trotter | @param instance: instance to be migrated
|
2284 | 30e42c4e | Guido Trotter | @rtype: string
|
2285 | 30e42c4e | Guido Trotter | @return: content of the KVM runtime file
|
2286 | 30e42c4e | Guido Trotter |
|
2287 | 30e42c4e | Guido Trotter | """
|
2288 | 30e42c4e | Guido Trotter | return self._ReadKVMRuntime(instance.name) |
2289 | 30e42c4e | Guido Trotter | |
2290 | 30e42c4e | Guido Trotter | def AcceptInstance(self, instance, info, target): |
2291 | 30e42c4e | Guido Trotter | """Prepare to accept an instance.
|
2292 | 30e42c4e | Guido Trotter |
|
2293 | 30e42c4e | Guido Trotter | @type instance: L{objects.Instance}
|
2294 | 30e42c4e | Guido Trotter | @param instance: instance to be accepted
|
2295 | 30e42c4e | Guido Trotter | @type info: string
|
2296 | 30e42c4e | Guido Trotter | @param info: content of the KVM runtime file on the source node
|
2297 | 30e42c4e | Guido Trotter | @type target: string
|
2298 | 30e42c4e | Guido Trotter | @param target: target host (usually ip), on this node
|
2299 | 30e42c4e | Guido Trotter |
|
2300 | 30e42c4e | Guido Trotter | """
|
2301 | 30e42c4e | Guido Trotter | kvm_runtime = self._LoadKVMRuntime(instance, serialized_runtime=info)
|
2302 | 641ae041 | Iustin Pop | incoming_address = (target, instance.hvparams[constants.HV_MIGRATION_PORT]) |
2303 | 4b9638dc | Guido Trotter | kvmpath = instance.hvparams[constants.HV_KVM_PATH] |
2304 | 6e043e60 | Guido Trotter | kvmhelp = self._GetKVMOutput(kvmpath, self._KVMOPT_HELP) |
2305 | b73f1c59 | Guido Trotter | self._ExecuteKVMRuntime(instance, kvm_runtime, kvmhelp,
|
2306 | b73f1c59 | Guido Trotter | incoming=incoming_address) |
2307 | 30e42c4e | Guido Trotter | |
2308 | 6a1434d7 | Andrea Spadaccini | def FinalizeMigrationDst(self, instance, info, success): |
2309 | 6a1434d7 | Andrea Spadaccini | """Finalize the instance migration on the target node.
|
2310 | 30e42c4e | Guido Trotter |
|
2311 | 30e42c4e | Guido Trotter | Stop the incoming mode KVM.
|
2312 | 30e42c4e | Guido Trotter |
|
2313 | 30e42c4e | Guido Trotter | @type instance: L{objects.Instance}
|
2314 | fea922fa | Guido Trotter | @param instance: instance whose migration is being finalized
|
2315 | 30e42c4e | Guido Trotter |
|
2316 | 30e42c4e | Guido Trotter | """
|
2317 | 30e42c4e | Guido Trotter | if success:
|
2318 | 5d9bfd87 | Apollon Oikonomopoulos | kvm_runtime = self._LoadKVMRuntime(instance, serialized_runtime=info)
|
2319 | 5d9bfd87 | Apollon Oikonomopoulos | kvm_nics = kvm_runtime[1]
|
2320 | 5d9bfd87 | Apollon Oikonomopoulos | |
2321 | 5d9bfd87 | Apollon Oikonomopoulos | for nic_seq, nic in enumerate(kvm_nics): |
2322 | cc8a8ed7 | Apollon Oikonomopoulos | if nic.nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
|
2323 | cc8a8ed7 | Apollon Oikonomopoulos | # Bridged interfaces have already been configured
|
2324 | cc8a8ed7 | Apollon Oikonomopoulos | continue
|
2325 | 5d9bfd87 | Apollon Oikonomopoulos | try:
|
2326 | 5d9bfd87 | Apollon Oikonomopoulos | tap = utils.ReadFile(self._InstanceNICFile(instance.name, nic_seq))
|
2327 | 5d9bfd87 | Apollon Oikonomopoulos | except EnvironmentError, err: |
2328 | 5d9bfd87 | Apollon Oikonomopoulos | logging.warning("Failed to find host interface for %s NIC #%d: %s",
|
2329 | 5d9bfd87 | Apollon Oikonomopoulos | instance.name, nic_seq, str(err))
|
2330 | 5d9bfd87 | Apollon Oikonomopoulos | continue
|
2331 | 5d9bfd87 | Apollon Oikonomopoulos | try:
|
2332 | 5d9bfd87 | Apollon Oikonomopoulos | self._ConfigureNIC(instance, nic_seq, nic, tap)
|
2333 | 5d9bfd87 | Apollon Oikonomopoulos | except errors.HypervisorError, err:
|
2334 | 5d9bfd87 | Apollon Oikonomopoulos | logging.warning(str(err))
|
2335 | 5d9bfd87 | Apollon Oikonomopoulos | |
2336 | 30e42c4e | Guido Trotter | self._WriteKVMRuntime(instance.name, info)
|
2337 | 30e42c4e | Guido Trotter | else:
|
2338 | 30e42c4e | Guido Trotter | self.StopInstance(instance, force=True) |
2339 | 30e42c4e | Guido Trotter | |
2340 | 58d38b02 | Iustin Pop | def MigrateInstance(self, instance, target, live): |
2341 | 30e42c4e | Guido Trotter | """Migrate an instance to a target node.
|
2342 | 30e42c4e | Guido Trotter |
|
2343 | 30e42c4e | Guido Trotter | The migration will not be attempted if the instance is not
|
2344 | 30e42c4e | Guido Trotter | currently running.
|
2345 | 30e42c4e | Guido Trotter |
|
2346 | 58d38b02 | Iustin Pop | @type instance: L{objects.Instance}
|
2347 | 58d38b02 | Iustin Pop | @param instance: the instance to be migrated
|
2348 | 30e42c4e | Guido Trotter | @type target: string
|
2349 | 30e42c4e | Guido Trotter | @param target: ip address of the target node
|
2350 | 30e42c4e | Guido Trotter | @type live: boolean
|
2351 | 30e42c4e | Guido Trotter | @param live: perform a live migration
|
2352 | 30e42c4e | Guido Trotter |
|
2353 | 30e42c4e | Guido Trotter | """
|
2354 | 58d38b02 | Iustin Pop | instance_name = instance.name |
2355 | 50716be0 | Iustin Pop | port = instance.hvparams[constants.HV_MIGRATION_PORT] |
2356 | 6a1434d7 | Andrea Spadaccini | _, _, alive = self._InstancePidAlive(instance_name)
|
2357 | 30e42c4e | Guido Trotter | if not alive: |
2358 | 30e42c4e | Guido Trotter | raise errors.HypervisorError("Instance not running, cannot migrate") |
2359 | 30e42c4e | Guido Trotter | |
2360 | 30e42c4e | Guido Trotter | if not live: |
2361 | d0c8c01d | Iustin Pop | self._CallMonitorCommand(instance_name, "stop") |
2362 | 30e42c4e | Guido Trotter | |
2363 | d0c8c01d | Iustin Pop | migrate_command = ("migrate_set_speed %dm" %
|
2364 | 5ae4945a | Iustin Pop | instance.hvparams[constants.HV_MIGRATION_BANDWIDTH]) |
2365 | e43d4f9f | Apollon Oikonomopoulos | self._CallMonitorCommand(instance_name, migrate_command)
|
2366 | e43d4f9f | Apollon Oikonomopoulos | |
2367 | d0c8c01d | Iustin Pop | migrate_command = ("migrate_set_downtime %dms" %
|
2368 | 5ae4945a | Iustin Pop | instance.hvparams[constants.HV_MIGRATION_DOWNTIME]) |
2369 | e43d4f9f | Apollon Oikonomopoulos | self._CallMonitorCommand(instance_name, migrate_command)
|
2370 | e43d4f9f | Apollon Oikonomopoulos | |
2371 | d0c8c01d | Iustin Pop | migrate_command = "migrate -d tcp:%s:%s" % (target, port)
|
2372 | 30e42c4e | Guido Trotter | self._CallMonitorCommand(instance_name, migrate_command)
|
2373 | 30e42c4e | Guido Trotter | |
2374 | 6a1434d7 | Andrea Spadaccini | def FinalizeMigrationSource(self, instance, success, live): |
2375 | 6a1434d7 | Andrea Spadaccini | """Finalize the instance migration on the source node.
|
2376 | 6a1434d7 | Andrea Spadaccini |
|
2377 | 6a1434d7 | Andrea Spadaccini | @type instance: L{objects.Instance}
|
2378 | 6a1434d7 | Andrea Spadaccini | @param instance: the instance that was migrated
|
2379 | 6a1434d7 | Andrea Spadaccini | @type success: bool
|
2380 | 6a1434d7 | Andrea Spadaccini | @param success: whether the migration succeeded or not
|
2381 | 6a1434d7 | Andrea Spadaccini | @type live: bool
|
2382 | 6a1434d7 | Andrea Spadaccini | @param live: whether the user requested a live migration or not
|
2383 | 6a1434d7 | Andrea Spadaccini |
|
2384 | 6a1434d7 | Andrea Spadaccini | """
|
2385 | 6a1434d7 | Andrea Spadaccini | if success:
|
2386 | 6a1434d7 | Andrea Spadaccini | pidfile, pid, _ = self._InstancePidAlive(instance.name)
|
2387 | 6a1434d7 | Andrea Spadaccini | utils.KillProcess(pid) |
2388 | 6a1434d7 | Andrea Spadaccini | self._RemoveInstanceRuntimeFiles(pidfile, instance.name)
|
2389 | 6a1434d7 | Andrea Spadaccini | elif live:
|
2390 | 6a1434d7 | Andrea Spadaccini | self._CallMonitorCommand(instance.name, self._CONT_CMD) |
2391 | 6a1434d7 | Andrea Spadaccini | |
2392 | 6a1434d7 | Andrea Spadaccini | def GetMigrationStatus(self, instance): |
2393 | 6a1434d7 | Andrea Spadaccini | """Get the migration status
|
2394 | 6a1434d7 | Andrea Spadaccini |
|
2395 | 6a1434d7 | Andrea Spadaccini | @type instance: L{objects.Instance}
|
2396 | 6a1434d7 | Andrea Spadaccini | @param instance: the instance that is being migrated
|
2397 | 6a1434d7 | Andrea Spadaccini | @rtype: L{objects.MigrationStatus}
|
2398 | 6a1434d7 | Andrea Spadaccini | @return: the status of the current migration (one of
|
2399 | 6a1434d7 | Andrea Spadaccini | L{constants.HV_MIGRATION_VALID_STATUSES}), plus any additional
|
2400 | 6a1434d7 | Andrea Spadaccini | progress info that can be retrieved from the hypervisor
|
2401 | 6a1434d7 | Andrea Spadaccini |
|
2402 | 6a1434d7 | Andrea Spadaccini | """
|
2403 | d0c8c01d | Iustin Pop | info_command = "info migrate"
|
2404 | 6a1434d7 | Andrea Spadaccini | for _ in range(self._MIGRATION_INFO_MAX_BAD_ANSWERS): |
2405 | 6a1434d7 | Andrea Spadaccini | result = self._CallMonitorCommand(instance.name, info_command)
|
2406 | 30e42c4e | Guido Trotter | match = self._MIGRATION_STATUS_RE.search(result.stdout)
|
2407 | 30e42c4e | Guido Trotter | if not match: |
2408 | c4e388a5 | Guido Trotter | if not result.stdout: |
2409 | c4e388a5 | Guido Trotter | logging.info("KVM: empty 'info migrate' result")
|
2410 | c4e388a5 | Guido Trotter | else:
|
2411 | e4dd2299 | Guido Trotter | logging.warning("KVM: unknown 'info migrate' result: %s",
|
2412 | c4e388a5 | Guido Trotter | result.stdout) |
2413 | 30e42c4e | Guido Trotter | else:
|
2414 | 30e42c4e | Guido Trotter | status = match.group(1)
|
2415 | 6a1434d7 | Andrea Spadaccini | if status in constants.HV_KVM_MIGRATION_VALID_STATUSES: |
2416 | 6a1434d7 | Andrea Spadaccini | migration_status = objects.MigrationStatus(status=status) |
2417 | 61643226 | Andrea Spadaccini | match = self._MIGRATION_PROGRESS_RE.search(result.stdout)
|
2418 | 61643226 | Andrea Spadaccini | if match:
|
2419 | 61643226 | Andrea Spadaccini | migration_status.transferred_ram = match.group("transferred")
|
2420 | 61643226 | Andrea Spadaccini | migration_status.total_ram = match.group("total")
|
2421 | 61643226 | Andrea Spadaccini | |
2422 | 6a1434d7 | Andrea Spadaccini | return migration_status
|
2423 | 30e42c4e | Guido Trotter | |
2424 | 6a1434d7 | Andrea Spadaccini | logging.warning("KVM: unknown migration status '%s'", status)
|
2425 | 6a1434d7 | Andrea Spadaccini | |
2426 | 6a1434d7 | Andrea Spadaccini | time.sleep(self._MIGRATION_INFO_RETRY_DELAY)
|
2427 | 6a1434d7 | Andrea Spadaccini | |
2428 | 62457f51 | Iustin Pop | return objects.MigrationStatus(status=constants.HV_MIGRATION_FAILED)
|
2429 | 30e42c4e | Guido Trotter | |
2430 | 3d836750 | Guido Trotter | def BalloonInstanceMemory(self, instance, mem): |
2431 | 3d836750 | Guido Trotter | """Balloon an instance memory to a certain value.
|
2432 | 3d836750 | Guido Trotter |
|
2433 | 3d836750 | Guido Trotter | @type instance: L{objects.Instance}
|
2434 | 3d836750 | Guido Trotter | @param instance: instance to be accepted
|
2435 | 3d836750 | Guido Trotter | @type mem: int
|
2436 | 3d836750 | Guido Trotter | @param mem: actual memory size to use for instance runtime
|
2437 | 3d836750 | Guido Trotter |
|
2438 | 3d836750 | Guido Trotter | """
|
2439 | 3d836750 | Guido Trotter | self._CallMonitorCommand(instance.name, "balloon %d" % mem) |
2440 | 3d836750 | Guido Trotter | |
2441 | eb58f9b1 | Guido Trotter | def GetNodeInfo(self): |
2442 | eb58f9b1 | Guido Trotter | """Return information about the node.
|
2443 | eb58f9b1 | Guido Trotter |
|
2444 | c41eea6e | Iustin Pop | @return: a dict with the following keys (values in MiB):
|
2445 | c41eea6e | Iustin Pop | - memory_total: the total memory size on the node
|
2446 | c41eea6e | Iustin Pop | - memory_free: the available memory on the node for instances
|
2447 | c41eea6e | Iustin Pop | - memory_dom0: the memory used by the node itself, if available
|
2448 | 34fbc862 | Andrea Spadaccini | - hv_version: the hypervisor version in the form (major, minor,
|
2449 | 34fbc862 | Andrea Spadaccini | revision)
|
2450 | eb58f9b1 | Guido Trotter |
|
2451 | eb58f9b1 | Guido Trotter | """
|
2452 | 34fbc862 | Andrea Spadaccini | result = self.GetLinuxNodeInfo()
|
2453 | 4b9638dc | Guido Trotter | # FIXME: this is the global kvm version, but the actual version can be
|
2454 | 4b9638dc | Guido Trotter | # customized as an hv parameter. we should use the nodegroup's default kvm
|
2455 | 4b9638dc | Guido Trotter | # path parameter here.
|
2456 | 3b59ec02 | Guido Trotter | _, v_major, v_min, v_rev = self._GetKVMVersion(constants.KVM_PATH)
|
2457 | 34fbc862 | Andrea Spadaccini | result[constants.HV_NODEINFO_KEY_VERSION] = (v_major, v_min, v_rev) |
2458 | 34fbc862 | Andrea Spadaccini | return result
|
2459 | eb58f9b1 | Guido Trotter | |
2460 | 637ce7f9 | Guido Trotter | @classmethod
|
2461 | 55cc0a44 | Michael Hanselmann | def GetInstanceConsole(cls, instance, hvparams, beparams): |
2462 | eb58f9b1 | Guido Trotter | """Return a command for connecting to the console of an instance.
|
2463 | eb58f9b1 | Guido Trotter |
|
2464 | eb58f9b1 | Guido Trotter | """
|
2465 | a2faf9ee | Guido Trotter | if hvparams[constants.HV_SERIAL_CONSOLE]:
|
2466 | 9d9bded1 | Michael Hanselmann | cmd = [pathutils.KVM_CONSOLE_WRAPPER, |
2467 | 2f4c951e | Stephen Shirley | constants.SOCAT_PATH, utils.ShellQuote(instance.name), |
2468 | 2f4c951e | Stephen Shirley | utils.ShellQuote(cls._InstanceMonitor(instance.name)), |
2469 | 55cc0a44 | Michael Hanselmann | "STDIO,%s" % cls._SocatUnixConsoleParams(),
|
2470 | 55cc0a44 | Michael Hanselmann | "UNIX-CONNECT:%s" % cls._InstanceSerial(instance.name)]
|
2471 | 55cc0a44 | Michael Hanselmann | return objects.InstanceConsole(instance=instance.name,
|
2472 | 55cc0a44 | Michael Hanselmann | kind=constants.CONS_SSH, |
2473 | 55cc0a44 | Michael Hanselmann | host=instance.primary_node, |
2474 | 052783ff | Michael Hanselmann | user=constants.SSH_CONSOLE_USER, |
2475 | 55cc0a44 | Michael Hanselmann | command=cmd) |
2476 | 3be34f57 | Guido Trotter | |
2477 | 3be34f57 | Guido Trotter | vnc_bind_address = hvparams[constants.HV_VNC_BIND_ADDRESS] |
2478 | 55cc0a44 | Michael Hanselmann | if vnc_bind_address and instance.network_port > constants.VNC_BASE_PORT: |
2479 | 55cc0a44 | Michael Hanselmann | display = instance.network_port - constants.VNC_BASE_PORT |
2480 | 55cc0a44 | Michael Hanselmann | return objects.InstanceConsole(instance=instance.name,
|
2481 | 55cc0a44 | Michael Hanselmann | kind=constants.CONS_VNC, |
2482 | 55cc0a44 | Michael Hanselmann | host=vnc_bind_address, |
2483 | 55cc0a44 | Michael Hanselmann | port=instance.network_port, |
2484 | 55cc0a44 | Michael Hanselmann | display=display) |
2485 | 55cc0a44 | Michael Hanselmann | |
2486 | 4d2cdb5a | Andrea Spadaccini | spice_bind = hvparams[constants.HV_KVM_SPICE_BIND] |
2487 | 4d2cdb5a | Andrea Spadaccini | if spice_bind:
|
2488 | 4d2cdb5a | Andrea Spadaccini | return objects.InstanceConsole(instance=instance.name,
|
2489 | 4d2cdb5a | Andrea Spadaccini | kind=constants.CONS_SPICE, |
2490 | 4d2cdb5a | Andrea Spadaccini | host=spice_bind, |
2491 | 4d2cdb5a | Andrea Spadaccini | port=instance.network_port) |
2492 | 4d2cdb5a | Andrea Spadaccini | |
2493 | 55cc0a44 | Michael Hanselmann | return objects.InstanceConsole(instance=instance.name,
|
2494 | 55cc0a44 | Michael Hanselmann | kind=constants.CONS_MESSAGE, |
2495 | 55cc0a44 | Michael Hanselmann | message=("No serial shell for instance %s" %
|
2496 | 55cc0a44 | Michael Hanselmann | instance.name)) |
2497 | eb58f9b1 | Guido Trotter | |
2498 | eb58f9b1 | Guido Trotter | def Verify(self): |
2499 | eb58f9b1 | Guido Trotter | """Verify the hypervisor.
|
2500 | eb58f9b1 | Guido Trotter |
|
2501 | cd04dfd2 | Michael Hanselmann | Check that the required binaries exist.
|
2502 | cd04dfd2 | Michael Hanselmann |
|
2503 | cd04dfd2 | Michael Hanselmann | @return: Problem description if something is wrong, C{None} otherwise
|
2504 | eb58f9b1 | Guido Trotter |
|
2505 | eb58f9b1 | Guido Trotter | """
|
2506 | 1f4b9d39 | Iustin Pop | msgs = [] |
2507 | 1f4b9d39 | Iustin Pop | # FIXME: this is the global kvm binary, but the actual path can be
|
2508 | 1f4b9d39 | Iustin Pop | # customized as an hv parameter; we should use the nodegroup's
|
2509 | 1f4b9d39 | Iustin Pop | # default kvm path parameter here.
|
2510 | eb58f9b1 | Guido Trotter | if not os.path.exists(constants.KVM_PATH): |
2511 | 1f4b9d39 | Iustin Pop | msgs.append("The KVM binary ('%s') does not exist" % constants.KVM_PATH)
|
2512 | 14aa53cb | Guido Trotter | if not os.path.exists(constants.SOCAT_PATH): |
2513 | 1f4b9d39 | Iustin Pop | msgs.append("The socat binary ('%s') does not exist" %
|
2514 | 1f4b9d39 | Iustin Pop | constants.SOCAT_PATH) |
2515 | 1f4b9d39 | Iustin Pop | |
2516 | 1f4b9d39 | Iustin Pop | return self._FormatVerifyResults(msgs) |
2517 | 14aa53cb | Guido Trotter | |
2518 | 6b5605e8 | Iustin Pop | @classmethod
|
2519 | 6b5605e8 | Iustin Pop | def CheckParameterSyntax(cls, hvparams): |
2520 | 6b5605e8 | Iustin Pop | """Check the given parameters for validity.
|
2521 | 6b5605e8 | Iustin Pop |
|
2522 | 6b5605e8 | Iustin Pop | @type hvparams: dict
|
2523 | 6b5605e8 | Iustin Pop | @param hvparams: dictionary with parameter names/value
|
2524 | 6b5605e8 | Iustin Pop | @raise errors.HypervisorError: when a parameter is not valid
|
2525 | 6b5605e8 | Iustin Pop |
|
2526 | 6b5605e8 | Iustin Pop | """
|
2527 | 47387b1e | Guido Trotter | super(KVMHypervisor, cls).CheckParameterSyntax(hvparams)
|
2528 | 6b5605e8 | Iustin Pop | |
2529 | df5ab9f0 | Guido Trotter | kernel_path = hvparams[constants.HV_KERNEL_PATH] |
2530 | df5ab9f0 | Guido Trotter | if kernel_path:
|
2531 | df5ab9f0 | Guido Trotter | if not hvparams[constants.HV_ROOT_PATH]: |
2532 | 205ab586 | Iustin Pop | raise errors.HypervisorError("Need a root partition for the instance," |
2533 | 205ab586 | Iustin Pop | " if a kernel is defined")
|
2534 | 6b5605e8 | Iustin Pop | |
2535 | 205ab586 | Iustin Pop | if (hvparams[constants.HV_VNC_X509_VERIFY] and |
2536 | 205ab586 | Iustin Pop | not hvparams[constants.HV_VNC_X509]):
|
2537 | 205ab586 | Iustin Pop | raise errors.HypervisorError("%s must be defined, if %s is" % |
2538 | 205ab586 | Iustin Pop | (constants.HV_VNC_X509, |
2539 | 205ab586 | Iustin Pop | constants.HV_VNC_X509_VERIFY)) |
2540 | 66d5dbef | Guido Trotter | |
2541 | 14fd6c81 | Guido Trotter | if hvparams[constants.HV_SERIAL_CONSOLE]:
|
2542 | 14fd6c81 | Guido Trotter | serial_speed = hvparams[constants.HV_SERIAL_SPEED] |
2543 | 14fd6c81 | Guido Trotter | valid_speeds = constants.VALID_SERIAL_SPEEDS |
2544 | 14fd6c81 | Guido Trotter | if not serial_speed or serial_speed not in valid_speeds: |
2545 | 14fd6c81 | Guido Trotter | raise errors.HypervisorError("Invalid serial console speed, must be" |
2546 | 14fd6c81 | Guido Trotter | " one of: %s" %
|
2547 | 14fd6c81 | Guido Trotter | utils.CommaJoin(valid_speeds)) |
2548 | 14fd6c81 | Guido Trotter | |
2549 | 66d5dbef | Guido Trotter | boot_order = hvparams[constants.HV_BOOT_ORDER] |
2550 | 205ab586 | Iustin Pop | if (boot_order == constants.HT_BO_CDROM and |
2551 | 205ab586 | Iustin Pop | not hvparams[constants.HV_CDROM_IMAGE_PATH]):
|
2552 | 835528af | Iustin Pop | raise errors.HypervisorError("Cannot boot from cdrom without an" |
2553 | 835528af | Iustin Pop | " ISO path")
|
2554 | f5118ade | Iustin Pop | |
2555 | d19d94db | Guido Trotter | security_model = hvparams[constants.HV_SECURITY_MODEL] |
2556 | d19d94db | Guido Trotter | if security_model == constants.HT_SM_USER:
|
2557 | d19d94db | Guido Trotter | if not hvparams[constants.HV_SECURITY_DOMAIN]: |
2558 | d19d94db | Guido Trotter | raise errors.HypervisorError("A security domain (user to run kvm as)" |
2559 | d19d94db | Guido Trotter | " must be specified")
|
2560 | d19d94db | Guido Trotter | elif (security_model == constants.HT_SM_NONE or |
2561 | d19d94db | Guido Trotter | security_model == constants.HT_SM_POOL): |
2562 | d19d94db | Guido Trotter | if hvparams[constants.HV_SECURITY_DOMAIN]:
|
2563 | d19d94db | Guido Trotter | raise errors.HypervisorError("Cannot have a security domain when the" |
2564 | d19d94db | Guido Trotter | " security model is 'none' or 'pool'")
|
2565 | d19d94db | Guido Trotter | |
2566 | b1cb62bd | Andrea Spadaccini | spice_bind = hvparams[constants.HV_KVM_SPICE_BIND] |
2567 | b451c4c7 | Andrea Spadaccini | spice_ip_version = hvparams[constants.HV_KVM_SPICE_IP_VERSION] |
2568 | b1cb62bd | Andrea Spadaccini | if spice_bind:
|
2569 | b1cb62bd | Andrea Spadaccini | if spice_ip_version != constants.IFACE_NO_IP_VERSION_SPECIFIED:
|
2570 | b1cb62bd | Andrea Spadaccini | # if an IP version is specified, the spice_bind parameter must be an
|
2571 | b1cb62bd | Andrea Spadaccini | # IP of that family
|
2572 | b1cb62bd | Andrea Spadaccini | if (netutils.IP4Address.IsValid(spice_bind) and |
2573 | b1cb62bd | Andrea Spadaccini | spice_ip_version != constants.IP4_VERSION): |
2574 | afa9bb2e | Michael Hanselmann | raise errors.HypervisorError("SPICE: Got an IPv4 address (%s), but" |
2575 | b1cb62bd | Andrea Spadaccini | " the specified IP version is %s" %
|
2576 | b1cb62bd | Andrea Spadaccini | (spice_bind, spice_ip_version)) |
2577 | b1cb62bd | Andrea Spadaccini | |
2578 | b1cb62bd | Andrea Spadaccini | if (netutils.IP6Address.IsValid(spice_bind) and |
2579 | b1cb62bd | Andrea Spadaccini | spice_ip_version != constants.IP6_VERSION): |
2580 | afa9bb2e | Michael Hanselmann | raise errors.HypervisorError("SPICE: Got an IPv6 address (%s), but" |
2581 | b1cb62bd | Andrea Spadaccini | " the specified IP version is %s" %
|
2582 | b1cb62bd | Andrea Spadaccini | (spice_bind, spice_ip_version)) |
2583 | b451c4c7 | Andrea Spadaccini | else:
|
2584 | 0e1b03b9 | Andrea Spadaccini | # All the other SPICE parameters depend on spice_bind being set. Raise an
|
2585 | 0e1b03b9 | Andrea Spadaccini | # error if any of them is set without it.
|
2586 | 07788a0b | Michael Hanselmann | for param in _SPICE_ADDITIONAL_PARAMS: |
2587 | 0e1b03b9 | Andrea Spadaccini | if hvparams[param]:
|
2588 | afa9bb2e | Michael Hanselmann | raise errors.HypervisorError("SPICE: %s requires %s to be set" % |
2589 | 0e1b03b9 | Andrea Spadaccini | (param, constants.HV_KVM_SPICE_BIND)) |
2590 | b1cb62bd | Andrea Spadaccini | |
2591 | d19d94db | Guido Trotter | @classmethod
|
2592 | d19d94db | Guido Trotter | def ValidateParameters(cls, hvparams): |
2593 | d19d94db | Guido Trotter | """Check the given parameters for validity.
|
2594 | d19d94db | Guido Trotter |
|
2595 | d19d94db | Guido Trotter | @type hvparams: dict
|
2596 | d19d94db | Guido Trotter | @param hvparams: dictionary with parameter names/value
|
2597 | d19d94db | Guido Trotter | @raise errors.HypervisorError: when a parameter is not valid
|
2598 | d19d94db | Guido Trotter |
|
2599 | d19d94db | Guido Trotter | """
|
2600 | d19d94db | Guido Trotter | super(KVMHypervisor, cls).ValidateParameters(hvparams)
|
2601 | d19d94db | Guido Trotter | |
2602 | 82e3bf85 | Dimitris Aragiorgis | kvm_path = hvparams[constants.HV_KVM_PATH] |
2603 | 82e3bf85 | Dimitris Aragiorgis | |
2604 | d19d94db | Guido Trotter | security_model = hvparams[constants.HV_SECURITY_MODEL] |
2605 | d19d94db | Guido Trotter | if security_model == constants.HT_SM_USER:
|
2606 | d19d94db | Guido Trotter | username = hvparams[constants.HV_SECURITY_DOMAIN] |
2607 | d19d94db | Guido Trotter | try:
|
2608 | 1feb39ec | Guido Trotter | pwd.getpwnam(username) |
2609 | d19d94db | Guido Trotter | except KeyError: |
2610 | d19d94db | Guido Trotter | raise errors.HypervisorError("Unknown security domain user %s" |
2611 | d19d94db | Guido Trotter | % username) |
2612 | d19d94db | Guido Trotter | |
2613 | b1cb62bd | Andrea Spadaccini | spice_bind = hvparams[constants.HV_KVM_SPICE_BIND] |
2614 | b1cb62bd | Andrea Spadaccini | if spice_bind:
|
2615 | b1cb62bd | Andrea Spadaccini | # only one of VNC and SPICE can be used currently.
|
2616 | b1cb62bd | Andrea Spadaccini | if hvparams[constants.HV_VNC_BIND_ADDRESS]:
|
2617 | afa9bb2e | Michael Hanselmann | raise errors.HypervisorError("Both SPICE and VNC are configured, but" |
2618 | b1cb62bd | Andrea Spadaccini | " only one of them can be used at a"
|
2619 | afa9bb2e | Michael Hanselmann | " given time")
|
2620 | b1cb62bd | Andrea Spadaccini | |
2621 | 3b59ec02 | Guido Trotter | # check that KVM supports SPICE
|
2622 | 6e043e60 | Guido Trotter | kvmhelp = cls._GetKVMOutput(kvm_path, cls._KVMOPT_HELP) |
2623 | 0ad7f5d8 | Guido Trotter | if not cls._SPICE_RE.search(kvmhelp): |
2624 | afa9bb2e | Michael Hanselmann | raise errors.HypervisorError("SPICE is configured, but it is not" |
2625 | afa9bb2e | Michael Hanselmann | " supported according to 'kvm --help'")
|
2626 | b1cb62bd | Andrea Spadaccini | |
2627 | b1cb62bd | Andrea Spadaccini | # if spice_bind is not an IP address, it must be a valid interface
|
2628 | afa9bb2e | Michael Hanselmann | bound_to_addr = (netutils.IP4Address.IsValid(spice_bind) or
|
2629 | afa9bb2e | Michael Hanselmann | netutils.IP6Address.IsValid(spice_bind)) |
2630 | b1cb62bd | Andrea Spadaccini | if not bound_to_addr and not netutils.IsValidInterface(spice_bind): |
2631 | afa9bb2e | Michael Hanselmann | raise errors.HypervisorError("SPICE: The %s parameter must be either" |
2632 | b1cb62bd | Andrea Spadaccini | " a valid IP address or interface name" %
|
2633 | b1cb62bd | Andrea Spadaccini | constants.HV_KVM_SPICE_BIND) |
2634 | b1cb62bd | Andrea Spadaccini | |
2635 | 82e3bf85 | Dimitris Aragiorgis | machine_version = hvparams[constants.HV_KVM_MACHINE_VERSION] |
2636 | 82e3bf85 | Dimitris Aragiorgis | if machine_version:
|
2637 | 6e043e60 | Guido Trotter | output = cls._GetKVMOutput(kvm_path, cls._KVMOPT_MLIST) |
2638 | 82e3bf85 | Dimitris Aragiorgis | if not cls._CHECK_MACHINE_VERSION_RE(machine_version).search(output): |
2639 | 82e3bf85 | Dimitris Aragiorgis | raise errors.HypervisorError("Unsupported machine version: %s" % |
2640 | 82e3bf85 | Dimitris Aragiorgis | machine_version) |
2641 | 82e3bf85 | Dimitris Aragiorgis | |
2642 | f5118ade | Iustin Pop | @classmethod
|
2643 | f5118ade | Iustin Pop | def PowercycleNode(cls): |
2644 | f5118ade | Iustin Pop | """KVM powercycle, just a wrapper over Linux powercycle.
|
2645 | f5118ade | Iustin Pop |
|
2646 | f5118ade | Iustin Pop | """
|
2647 | f5118ade | Iustin Pop | cls.LinuxPowercycle() |