root / lib / hypervisor / hv_kvm.py @ 212fa3a7
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1 | eb58f9b1 | Guido Trotter | #
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2 | eb58f9b1 | Guido Trotter | #
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3 | eb58f9b1 | Guido Trotter | |
4 | eb58f9b1 | Guido Trotter | # Copyright (C) 2008 Google Inc.
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5 | eb58f9b1 | Guido Trotter | #
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6 | eb58f9b1 | Guido Trotter | # This program is free software; you can redistribute it and/or modify
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7 | eb58f9b1 | Guido Trotter | # it under the terms of the GNU General Public License as published by
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8 | eb58f9b1 | Guido Trotter | # the Free Software Foundation; either version 2 of the License, or
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9 | eb58f9b1 | Guido Trotter | # (at your option) any later version.
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10 | eb58f9b1 | Guido Trotter | #
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11 | eb58f9b1 | Guido Trotter | # This program is distributed in the hope that it will be useful, but
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12 | eb58f9b1 | Guido Trotter | # WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | eb58f9b1 | Guido Trotter | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | eb58f9b1 | Guido Trotter | # General Public License for more details.
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15 | eb58f9b1 | Guido Trotter | #
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16 | eb58f9b1 | Guido Trotter | # You should have received a copy of the GNU General Public License
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17 | eb58f9b1 | Guido Trotter | # along with this program; if not, write to the Free Software
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18 | eb58f9b1 | Guido Trotter | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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19 | eb58f9b1 | Guido Trotter | # 02110-1301, USA.
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20 | eb58f9b1 | Guido Trotter | |
21 | eb58f9b1 | Guido Trotter | |
22 | eb58f9b1 | Guido Trotter | """KVM hypervisor
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23 | eb58f9b1 | Guido Trotter |
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24 | eb58f9b1 | Guido Trotter | """
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25 | eb58f9b1 | Guido Trotter | |
26 | eb58f9b1 | Guido Trotter | import os |
27 | eb58f9b1 | Guido Trotter | import os.path |
28 | eb58f9b1 | Guido Trotter | import re |
29 | eb58f9b1 | Guido Trotter | import tempfile |
30 | eb58f9b1 | Guido Trotter | from cStringIO import StringIO |
31 | eb58f9b1 | Guido Trotter | |
32 | eb58f9b1 | Guido Trotter | from ganeti import utils |
33 | eb58f9b1 | Guido Trotter | from ganeti import constants |
34 | eb58f9b1 | Guido Trotter | from ganeti import errors |
35 | eb58f9b1 | Guido Trotter | from ganeti.hypervisor import hv_base |
36 | eb58f9b1 | Guido Trotter | |
37 | eb58f9b1 | Guido Trotter | |
38 | eb58f9b1 | Guido Trotter | class KVMHypervisor(hv_base.BaseHypervisor): |
39 | eb58f9b1 | Guido Trotter | """Fake hypervisor interface.
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40 | eb58f9b1 | Guido Trotter |
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41 | eb58f9b1 | Guido Trotter | This can be used for testing the ganeti code without having to have
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42 | eb58f9b1 | Guido Trotter | a real virtualisation software installed.
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43 | eb58f9b1 | Guido Trotter |
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44 | eb58f9b1 | Guido Trotter | """
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45 | eb58f9b1 | Guido Trotter | _ROOT_DIR = constants.RUN_GANETI_DIR + "/kvm-hypervisor"
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46 | eb58f9b1 | Guido Trotter | _PIDS_DIR = _ROOT_DIR + "/pid"
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47 | eb58f9b1 | Guido Trotter | _CTRL_DIR = _ROOT_DIR + "/ctrl"
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48 | eb58f9b1 | Guido Trotter | _DIRS = [_ROOT_DIR, _PIDS_DIR, _CTRL_DIR] |
49 | eb58f9b1 | Guido Trotter | |
50 | 6b5605e8 | Iustin Pop | PARAMETERS = [ |
51 | 6b5605e8 | Iustin Pop | constants.HV_KERNEL_PATH, |
52 | 6b5605e8 | Iustin Pop | constants.HV_INITRD_PATH, |
53 | 6b5605e8 | Iustin Pop | constants.HV_ACPI, |
54 | 6b5605e8 | Iustin Pop | ] |
55 | 6b5605e8 | Iustin Pop | |
56 | eb58f9b1 | Guido Trotter | def __init__(self): |
57 | eb58f9b1 | Guido Trotter | hv_base.BaseHypervisor.__init__(self)
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58 | eb58f9b1 | Guido Trotter | # Let's make sure the directories we need exist, even if the RUN_DIR lives
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59 | eb58f9b1 | Guido Trotter | # in a tmpfs filesystem or has been otherwise wiped out.
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60 | eb58f9b1 | Guido Trotter | for dir in self._DIRS: |
61 | eb58f9b1 | Guido Trotter | if not os.path.exists(dir): |
62 | eb58f9b1 | Guido Trotter | os.mkdir(dir)
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63 | eb58f9b1 | Guido Trotter | |
64 | eb58f9b1 | Guido Trotter | def _WriteNetScript(self, instance, seq, nic): |
65 | eb58f9b1 | Guido Trotter | """Write a script to connect a net interface to the proper bridge.
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66 | eb58f9b1 | Guido Trotter |
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67 | eb58f9b1 | Guido Trotter | This can be used by any qemu-type hypervisor.
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68 | eb58f9b1 | Guido Trotter |
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69 | eb58f9b1 | Guido Trotter | @param instance: instance we're acting on
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70 | eb58f9b1 | Guido Trotter | @type instance: instance object
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71 | eb58f9b1 | Guido Trotter | @param seq: nic sequence number
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72 | eb58f9b1 | Guido Trotter | @type seq: int
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73 | eb58f9b1 | Guido Trotter | @param nic: nic we're acting on
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74 | eb58f9b1 | Guido Trotter | @type nic: nic object
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75 | eb58f9b1 | Guido Trotter | @return: netscript file name
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76 | eb58f9b1 | Guido Trotter | @rtype: string
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77 | eb58f9b1 | Guido Trotter |
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78 | eb58f9b1 | Guido Trotter | """
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79 | eb58f9b1 | Guido Trotter | script = StringIO() |
80 | eb58f9b1 | Guido Trotter | script.write("#!/bin/sh\n")
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81 | eb58f9b1 | Guido Trotter | script.write("# this is autogenerated by Ganeti, please do not edit\n#\n")
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82 | eb58f9b1 | Guido Trotter | script.write("export INSTANCE=%s\n" % instance.name)
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83 | eb58f9b1 | Guido Trotter | script.write("export MAC=%s\n" % nic.mac)
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84 | eb58f9b1 | Guido Trotter | script.write("export IP=%s\n" % nic.ip)
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85 | eb58f9b1 | Guido Trotter | script.write("export BRIDGE=%s\n" % nic.bridge)
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86 | eb58f9b1 | Guido Trotter | script.write("export INTERFACE=$1\n")
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87 | eb58f9b1 | Guido Trotter | # TODO: make this configurable at ./configure time
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88 | eb58f9b1 | Guido Trotter | script.write("if [ -x /etc/ganeti/kvm-vif-bridge ]; then\n")
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89 | eb58f9b1 | Guido Trotter | script.write(" # Execute the user-specific vif file\n")
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90 | eb58f9b1 | Guido Trotter | script.write(" /etc/ganeti/kvm-vif-bridge\n")
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91 | eb58f9b1 | Guido Trotter | script.write("else\n")
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92 | eb58f9b1 | Guido Trotter | script.write(" # Connect the interface to the bridge\n")
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93 | eb58f9b1 | Guido Trotter | script.write(" /sbin/ifconfig $INTERFACE 0.0.0.0 up\n")
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94 | eb58f9b1 | Guido Trotter | script.write(" /usr/sbin/brctl addif $BRIDGE $INTERFACE\n")
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95 | eb58f9b1 | Guido Trotter | script.write("fi\n\n")
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96 | eb58f9b1 | Guido Trotter | # As much as we'd like to put this in our _ROOT_DIR, that will happen to be
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97 | eb58f9b1 | Guido Trotter | # mounted noexec sometimes, so we'll have to find another place.
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98 | eb58f9b1 | Guido Trotter | (tmpfd, tmpfile_name) = tempfile.mkstemp() |
99 | eb58f9b1 | Guido Trotter | tmpfile = os.fdopen(tmpfd, 'w')
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100 | eb58f9b1 | Guido Trotter | tmpfile.write(script.getvalue()) |
101 | eb58f9b1 | Guido Trotter | tmpfile.close() |
102 | eb58f9b1 | Guido Trotter | os.chmod(tmpfile_name, 0755)
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103 | eb58f9b1 | Guido Trotter | return tmpfile_name
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104 | eb58f9b1 | Guido Trotter | |
105 | eb58f9b1 | Guido Trotter | def ListInstances(self): |
106 | eb58f9b1 | Guido Trotter | """Get the list of running instances.
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107 | eb58f9b1 | Guido Trotter |
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108 | eb58f9b1 | Guido Trotter | We can do this by listing our live instances directory and checking whether
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109 | eb58f9b1 | Guido Trotter | the associated kvm process is still alive.
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110 | eb58f9b1 | Guido Trotter |
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111 | eb58f9b1 | Guido Trotter | """
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112 | eb58f9b1 | Guido Trotter | result = [] |
113 | eb58f9b1 | Guido Trotter | for name in os.listdir(self._PIDS_DIR): |
114 | eb58f9b1 | Guido Trotter | file = "%s/%s" % (self._PIDS_DIR, name) |
115 | eb58f9b1 | Guido Trotter | if utils.IsProcessAlive(utils.ReadPidFile(file)): |
116 | eb58f9b1 | Guido Trotter | result.append(name) |
117 | eb58f9b1 | Guido Trotter | return result
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118 | eb58f9b1 | Guido Trotter | |
119 | eb58f9b1 | Guido Trotter | def GetInstanceInfo(self, instance_name): |
120 | eb58f9b1 | Guido Trotter | """Get instance properties.
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121 | eb58f9b1 | Guido Trotter |
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122 | eb58f9b1 | Guido Trotter | Args:
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123 | eb58f9b1 | Guido Trotter | instance_name: the instance name
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124 | eb58f9b1 | Guido Trotter |
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125 | eb58f9b1 | Guido Trotter | Returns:
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126 | eb58f9b1 | Guido Trotter | (name, id, memory, vcpus, stat, times)
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127 | eb58f9b1 | Guido Trotter | """
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128 | eb58f9b1 | Guido Trotter | pidfile = "%s/%s" % (self._PIDS_DIR, instance_name) |
129 | eb58f9b1 | Guido Trotter | pid = utils.ReadPidFile(pidfile) |
130 | eb58f9b1 | Guido Trotter | if not utils.IsProcessAlive(pid): |
131 | eb58f9b1 | Guido Trotter | return None |
132 | eb58f9b1 | Guido Trotter | |
133 | eb58f9b1 | Guido Trotter | cmdline_file = "/proc/%s/cmdline" % pid
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134 | eb58f9b1 | Guido Trotter | try:
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135 | eb58f9b1 | Guido Trotter | fh = open(cmdline_file, 'r') |
136 | eb58f9b1 | Guido Trotter | try:
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137 | eb58f9b1 | Guido Trotter | cmdline = fh.read() |
138 | eb58f9b1 | Guido Trotter | finally:
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139 | eb58f9b1 | Guido Trotter | fh.close() |
140 | eb58f9b1 | Guido Trotter | except IOError, err: |
141 | eb58f9b1 | Guido Trotter | raise errors.HypervisorError("Failed to list instance %s: %s" % |
142 | eb58f9b1 | Guido Trotter | (instance_name, err)) |
143 | eb58f9b1 | Guido Trotter | |
144 | eb58f9b1 | Guido Trotter | memory = 0
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145 | eb58f9b1 | Guido Trotter | vcpus = 0
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146 | eb58f9b1 | Guido Trotter | stat = "---b-"
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147 | eb58f9b1 | Guido Trotter | times = "0"
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148 | eb58f9b1 | Guido Trotter | |
149 | eb58f9b1 | Guido Trotter | arg_list = cmdline.split('\x00')
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150 | eb58f9b1 | Guido Trotter | while arg_list:
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151 | eb58f9b1 | Guido Trotter | arg = arg_list.pop(0)
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152 | eb58f9b1 | Guido Trotter | if arg == '-m': |
153 | eb58f9b1 | Guido Trotter | memory = arg_list.pop(0)
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154 | eb58f9b1 | Guido Trotter | elif arg == '-smp': |
155 | eb58f9b1 | Guido Trotter | vcpus = arg_list.pop(0)
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156 | eb58f9b1 | Guido Trotter | |
157 | eb58f9b1 | Guido Trotter | return (instance_name, pid, memory, vcpus, stat, times)
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158 | eb58f9b1 | Guido Trotter | |
159 | eb58f9b1 | Guido Trotter | def GetAllInstancesInfo(self): |
160 | eb58f9b1 | Guido Trotter | """Get properties of all instances.
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161 | eb58f9b1 | Guido Trotter |
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162 | eb58f9b1 | Guido Trotter | Returns:
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163 | eb58f9b1 | Guido Trotter | [(name, id, memory, vcpus, stat, times),...]
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164 | eb58f9b1 | Guido Trotter | """
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165 | eb58f9b1 | Guido Trotter | data = [] |
166 | eb58f9b1 | Guido Trotter | for name in os.listdir(self._PIDS_DIR): |
167 | eb58f9b1 | Guido Trotter | file = "%s/%s" % (self._PIDS_DIR, name) |
168 | eb58f9b1 | Guido Trotter | if utils.IsProcessAlive(utils.ReadPidFile(file)): |
169 | eb58f9b1 | Guido Trotter | data.append(self.GetInstanceInfo(name))
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170 | eb58f9b1 | Guido Trotter | |
171 | eb58f9b1 | Guido Trotter | return data
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172 | eb58f9b1 | Guido Trotter | |
173 | eb58f9b1 | Guido Trotter | def StartInstance(self, instance, block_devices, extra_args): |
174 | eb58f9b1 | Guido Trotter | """Start an instance.
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175 | eb58f9b1 | Guido Trotter |
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176 | eb58f9b1 | Guido Trotter | """
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177 | eb58f9b1 | Guido Trotter | temp_files = [] |
178 | eb58f9b1 | Guido Trotter | pidfile = self._PIDS_DIR + "/%s" % instance.name |
179 | eb58f9b1 | Guido Trotter | if utils.IsProcessAlive(utils.ReadPidFile(pidfile)):
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180 | eb58f9b1 | Guido Trotter | raise errors.HypervisorError("Failed to start instance %s: %s" % |
181 | eb58f9b1 | Guido Trotter | (instance.name, "already running"))
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182 | eb58f9b1 | Guido Trotter | |
183 | eb58f9b1 | Guido Trotter | kvm = constants.KVM_PATH |
184 | eb58f9b1 | Guido Trotter | kvm_cmd = [kvm] |
185 | 8b3fd458 | Iustin Pop | kvm_cmd.extend(['-m', instance.beparams[constants.BE_MEMORY]])
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186 | 8b3fd458 | Iustin Pop | kvm_cmd.extend(['-smp', instance.beparams[constants.BE_VCPUS]])
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187 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-pidfile', pidfile])
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188 | eb58f9b1 | Guido Trotter | # used just by the vnc server, if enabled
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189 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-name', instance.name])
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190 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-daemonize'])
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191 | 6b5605e8 | Iustin Pop | if not instance.hvparams[constants.HV_ACPI]: |
192 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-no-acpi'])
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193 | eb58f9b1 | Guido Trotter | if not instance.nics: |
194 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-net', 'none']) |
195 | eb58f9b1 | Guido Trotter | else:
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196 | eb58f9b1 | Guido Trotter | nic_seq = 0
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197 | eb58f9b1 | Guido Trotter | for nic in instance.nics: |
198 | eb58f9b1 | Guido Trotter | script = self._WriteNetScript(instance, nic_seq, nic)
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199 | eb58f9b1 | Guido Trotter | # FIXME: handle other models
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200 | eb58f9b1 | Guido Trotter | nic_val = "nic,macaddr=%s,model=virtio" % nic.mac
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201 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-net', nic_val])
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202 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-net', 'tap,script=%s' % script]) |
203 | eb58f9b1 | Guido Trotter | temp_files.append(script) |
204 | eb58f9b1 | Guido Trotter | nic_seq += 1
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205 | eb58f9b1 | Guido Trotter | |
206 | eb58f9b1 | Guido Trotter | boot_drive = True
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207 | eb58f9b1 | Guido Trotter | for cfdev, rldev in block_devices: |
208 | eb58f9b1 | Guido Trotter | # TODO: handle FD_LOOP and FD_BLKTAP (?)
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209 | eb58f9b1 | Guido Trotter | if boot_drive:
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210 | eb58f9b1 | Guido Trotter | boot_val = ',boot=on'
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211 | d47d3d38 | Guido Trotter | boot_drive = False
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212 | eb58f9b1 | Guido Trotter | else:
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213 | eb58f9b1 | Guido Trotter | boot_val = ''
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214 | eb58f9b1 | Guido Trotter | |
215 | d47d3d38 | Guido Trotter | # TODO: handle different if= types
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216 | d47d3d38 | Guido Trotter | if_val = ',if=virtio'
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217 | d47d3d38 | Guido Trotter | |
218 | d47d3d38 | Guido Trotter | drive_val = 'file=%s,format=raw%s%s' % (rldev.dev_path, if_val, boot_val)
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219 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-drive', drive_val])
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220 | eb58f9b1 | Guido Trotter | |
221 | 6b5605e8 | Iustin Pop | kvm_cmd.extend(['-kernel', instance.hvparams[HV_KERNEL_PATH]])
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222 | 6b5605e8 | Iustin Pop | initrd_path = instance.hvparams[HV_INITRD_PATH] |
223 | eb58f9b1 | Guido Trotter | if initrd_path:
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224 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-initrd', initrd_path])
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225 | eb58f9b1 | Guido Trotter | |
226 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-append', 'console=ttyS0,38400 root=/dev/vda']) |
227 | eb58f9b1 | Guido Trotter | |
228 | eb58f9b1 | Guido Trotter | #"hvm_boot_order",
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229 | eb58f9b1 | Guido Trotter | #"hvm_cdrom_image_path",
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230 | eb58f9b1 | Guido Trotter | |
231 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-nographic'])
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232 | eb58f9b1 | Guido Trotter | # FIXME: handle vnc, if needed
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233 | eb58f9b1 | Guido Trotter | # How do we decide whether to have it or not?? :(
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234 | eb58f9b1 | Guido Trotter | #"vnc_bind_address",
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235 | eb58f9b1 | Guido Trotter | #"network_port"
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236 | eb58f9b1 | Guido Trotter | base_control = '%s/%s' % (self._CTRL_DIR, instance.name) |
237 | eb58f9b1 | Guido Trotter | monitor_dev = 'unix:%s.monitor,server,nowait' % base_control
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238 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-monitor', monitor_dev])
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239 | eb58f9b1 | Guido Trotter | serial_dev = 'unix:%s.serial,server,nowait' % base_control
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240 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-serial', serial_dev])
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241 | eb58f9b1 | Guido Trotter | |
242 | eb58f9b1 | Guido Trotter | result = utils.RunCmd(kvm_cmd) |
243 | eb58f9b1 | Guido Trotter | if result.failed:
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244 | eb58f9b1 | Guido Trotter | raise errors.HypervisorError("Failed to start instance %s: %s (%s)" % |
245 | eb58f9b1 | Guido Trotter | (instance.name, result.fail_reason, |
246 | eb58f9b1 | Guido Trotter | result.output)) |
247 | eb58f9b1 | Guido Trotter | |
248 | eb58f9b1 | Guido Trotter | if not utils.IsProcessAlive(utils.ReadPidFile(pidfile)): |
249 | eb58f9b1 | Guido Trotter | raise errors.HypervisorError("Failed to start instance %s: %s" % |
250 | eb58f9b1 | Guido Trotter | (instance.name)) |
251 | eb58f9b1 | Guido Trotter | |
252 | eb58f9b1 | Guido Trotter | for file in temp_files: |
253 | eb58f9b1 | Guido Trotter | utils.RemoveFile(file)
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254 | eb58f9b1 | Guido Trotter | |
255 | eb58f9b1 | Guido Trotter | def StopInstance(self, instance, force=False): |
256 | eb58f9b1 | Guido Trotter | """Stop an instance.
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257 | eb58f9b1 | Guido Trotter |
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258 | eb58f9b1 | Guido Trotter | """
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259 | eb58f9b1 | Guido Trotter | pid_file = self._PIDS_DIR + "/%s" % instance.name |
260 | eb58f9b1 | Guido Trotter | pid = utils.ReadPidFile(pid_file) |
261 | eb58f9b1 | Guido Trotter | if pid > 0 and utils.IsProcessAlive(pid): |
262 | 6b5605e8 | Iustin Pop | if force or not instance.hvparams[constants.HV_ACPI]: |
263 | eb58f9b1 | Guido Trotter | utils.KillProcess(pid) |
264 | eb58f9b1 | Guido Trotter | else:
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265 | eb58f9b1 | Guido Trotter | # This only works if the instance os has acpi support
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266 | eb58f9b1 | Guido Trotter | monitor_socket = '%s/%s.monitor' % (self._CTRL_DIR, instance.name) |
267 | eb58f9b1 | Guido Trotter | socat = 'socat -u STDIN UNIX-CONNECT:%s' % monitor_socket
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268 | eb58f9b1 | Guido Trotter | command = "echo 'system_powerdown' | %s" % socat
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269 | eb58f9b1 | Guido Trotter | result = utils.RunCmd(command) |
270 | eb58f9b1 | Guido Trotter | if result.failed:
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271 | eb58f9b1 | Guido Trotter | raise errors.HypervisorError("Failed to stop instance %s: %s" % |
272 | eb58f9b1 | Guido Trotter | (instance.name, result.fail_reason)) |
273 | eb58f9b1 | Guido Trotter | |
274 | eb58f9b1 | Guido Trotter | if not utils.IsProcessAlive(pid): |
275 | eb58f9b1 | Guido Trotter | utils.RemoveFile(pid_file) |
276 | eb58f9b1 | Guido Trotter | |
277 | eb58f9b1 | Guido Trotter | def RebootInstance(self, instance): |
278 | eb58f9b1 | Guido Trotter | """Reboot an instance.
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279 | eb58f9b1 | Guido Trotter |
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280 | eb58f9b1 | Guido Trotter | """
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281 | eb58f9b1 | Guido Trotter | # For some reason if we do a 'send-key ctrl-alt-delete' to the control
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282 | eb58f9b1 | Guido Trotter | # socket the instance will stop, but now power up again. So we'll resort
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283 | eb58f9b1 | Guido Trotter | # to shutdown and restart.
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284 | eb58f9b1 | Guido Trotter | self.StopInstance(instance)
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285 | eb58f9b1 | Guido Trotter | self.StartInstance(instance)
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286 | eb58f9b1 | Guido Trotter | |
287 | eb58f9b1 | Guido Trotter | def GetNodeInfo(self): |
288 | eb58f9b1 | Guido Trotter | """Return information about the node.
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289 | eb58f9b1 | Guido Trotter |
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290 | eb58f9b1 | Guido Trotter | The return value is a dict, which has to have the following items:
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291 | eb58f9b1 | Guido Trotter | (all values in MiB)
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292 | eb58f9b1 | Guido Trotter | - memory_total: the total memory size on the node
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293 | eb58f9b1 | Guido Trotter | - memory_free: the available memory on the node for instances
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294 | eb58f9b1 | Guido Trotter | - memory_dom0: the memory used by the node itself, if available
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295 | eb58f9b1 | Guido Trotter |
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296 | eb58f9b1 | Guido Trotter | """
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297 | eb58f9b1 | Guido Trotter | # global ram usage from the xm info command
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298 | eb58f9b1 | Guido Trotter | # memory : 3583
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299 | eb58f9b1 | Guido Trotter | # free_memory : 747
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300 | eb58f9b1 | Guido Trotter | # note: in xen 3, memory has changed to total_memory
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301 | eb58f9b1 | Guido Trotter | try:
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302 | eb58f9b1 | Guido Trotter | fh = file("/proc/meminfo") |
303 | eb58f9b1 | Guido Trotter | try:
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304 | eb58f9b1 | Guido Trotter | data = fh.readlines() |
305 | eb58f9b1 | Guido Trotter | finally:
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306 | eb58f9b1 | Guido Trotter | fh.close() |
307 | eb58f9b1 | Guido Trotter | except IOError, err: |
308 | eb58f9b1 | Guido Trotter | raise errors.HypervisorError("Failed to list node info: %s" % err) |
309 | eb58f9b1 | Guido Trotter | |
310 | eb58f9b1 | Guido Trotter | result = {} |
311 | eb58f9b1 | Guido Trotter | sum_free = 0
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312 | eb58f9b1 | Guido Trotter | for line in data: |
313 | eb58f9b1 | Guido Trotter | splitfields = line.split(":", 1) |
314 | eb58f9b1 | Guido Trotter | |
315 | eb58f9b1 | Guido Trotter | if len(splitfields) > 1: |
316 | eb58f9b1 | Guido Trotter | key = splitfields[0].strip()
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317 | eb58f9b1 | Guido Trotter | val = splitfields[1].strip()
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318 | eb58f9b1 | Guido Trotter | if key == 'MemTotal': |
319 | eb58f9b1 | Guido Trotter | result['memory_total'] = int(val.split()[0])/1024 |
320 | eb58f9b1 | Guido Trotter | elif key in ('MemFree', 'Buffers', 'Cached'): |
321 | eb58f9b1 | Guido Trotter | sum_free += int(val.split()[0])/1024 |
322 | eb58f9b1 | Guido Trotter | elif key == 'Active': |
323 | eb58f9b1 | Guido Trotter | result['memory_dom0'] = int(val.split()[0])/1024 |
324 | eb58f9b1 | Guido Trotter | result['memory_free'] = sum_free
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325 | eb58f9b1 | Guido Trotter | |
326 | eb58f9b1 | Guido Trotter | cpu_total = 0
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327 | eb58f9b1 | Guido Trotter | try:
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328 | eb58f9b1 | Guido Trotter | fh = open("/proc/cpuinfo") |
329 | eb58f9b1 | Guido Trotter | try:
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330 | eb58f9b1 | Guido Trotter | cpu_total = len(re.findall("(?m)^processor\s*:\s*[0-9]+\s*$", |
331 | eb58f9b1 | Guido Trotter | fh.read())) |
332 | eb58f9b1 | Guido Trotter | finally:
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333 | eb58f9b1 | Guido Trotter | fh.close() |
334 | eb58f9b1 | Guido Trotter | except EnvironmentError, err: |
335 | eb58f9b1 | Guido Trotter | raise errors.HypervisorError("Failed to list node info: %s" % err) |
336 | eb58f9b1 | Guido Trotter | result['cpu_total'] = cpu_total
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337 | eb58f9b1 | Guido Trotter | |
338 | eb58f9b1 | Guido Trotter | return result
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339 | eb58f9b1 | Guido Trotter | |
340 | eb58f9b1 | Guido Trotter | @staticmethod
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341 | eb58f9b1 | Guido Trotter | def GetShellCommandForConsole(instance): |
342 | eb58f9b1 | Guido Trotter | """Return a command for connecting to the console of an instance.
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343 | eb58f9b1 | Guido Trotter |
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344 | eb58f9b1 | Guido Trotter | """
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345 | eb58f9b1 | Guido Trotter | # TODO: we can either try the serial socket or suggest vnc
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346 | eb58f9b1 | Guido Trotter | return "echo Console not available for the kvm hypervisor yet" |
347 | eb58f9b1 | Guido Trotter | |
348 | eb58f9b1 | Guido Trotter | def Verify(self): |
349 | eb58f9b1 | Guido Trotter | """Verify the hypervisor.
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350 | eb58f9b1 | Guido Trotter |
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351 | eb58f9b1 | Guido Trotter | Check that the binary exists.
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352 | eb58f9b1 | Guido Trotter |
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353 | eb58f9b1 | Guido Trotter | """
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354 | eb58f9b1 | Guido Trotter | if not os.path.exists(constants.KVM_PATH): |
355 | eb58f9b1 | Guido Trotter | return "The kvm binary ('%s') does not exist." % constants.KVM_PATH |
356 | 6b5605e8 | Iustin Pop | |
357 | 6b5605e8 | Iustin Pop | @classmethod
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358 | 6b5605e8 | Iustin Pop | def CheckParameterSyntax(cls, hvparams): |
359 | 6b5605e8 | Iustin Pop | """Check the given parameters for validity.
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360 | 6b5605e8 | Iustin Pop |
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361 | 6b5605e8 | Iustin Pop | For the KVM hypervisor, this only check the existence of the
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362 | 6b5605e8 | Iustin Pop | kernel.
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363 | 6b5605e8 | Iustin Pop |
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364 | 6b5605e8 | Iustin Pop | @type hvparams: dict
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365 | 6b5605e8 | Iustin Pop | @param hvparams: dictionary with parameter names/value
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366 | 6b5605e8 | Iustin Pop | @raise errors.HypervisorError: when a parameter is not valid
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367 | 6b5605e8 | Iustin Pop |
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368 | 6b5605e8 | Iustin Pop | """
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369 | 6b5605e8 | Iustin Pop | super(KvmHypervisor, cls).CheckParameterSyntax(hvparams)
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370 | 6b5605e8 | Iustin Pop | |
371 | 6b5605e8 | Iustin Pop | if not hvparams[constants.HV_KERNEL_PATH]: |
372 | 6b5605e8 | Iustin Pop | raise errors.HypervisorError("Need a kernel for the instance") |
373 | 6b5605e8 | Iustin Pop | |
374 | 6b5605e8 | Iustin Pop | if not os.path.isabs(hvparams[constants.HV_KERNEL_PATH]): |
375 | 6b5605e8 | Iustin Pop | raise errors.HypervisorError("The kernel path must an absolute path") |
376 | 6b5605e8 | Iustin Pop | |
377 | 6b5605e8 | Iustin Pop | if hvparams[constants.HV_INITRD_PATH]:
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378 | 6b5605e8 | Iustin Pop | if not os.path.isabs(hvparams[constants.HV_INITRD_PATH]): |
379 | 6b5605e8 | Iustin Pop | raise errors.HypervisorError("The initrd path must an absolute path" |
380 | 6b5605e8 | Iustin Pop | ", if defined")
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381 | 6b5605e8 | Iustin Pop | |
382 | 6b5605e8 | Iustin Pop | def ValidateParameters(self, hvparams): |
383 | 6b5605e8 | Iustin Pop | """Check the given parameters for validity.
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384 | 6b5605e8 | Iustin Pop |
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385 | 6b5605e8 | Iustin Pop | For the KVM hypervisor, this checks the existence of the
|
386 | 6b5605e8 | Iustin Pop | kernel.
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387 | 6b5605e8 | Iustin Pop |
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388 | 6b5605e8 | Iustin Pop | """
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389 | 6b5605e8 | Iustin Pop | super(KvmHypervisor, self).ValidateParameters(hvparams) |
390 | 6b5605e8 | Iustin Pop | |
391 | 6b5605e8 | Iustin Pop | kernel_path = hvparams[constants.HV_KERNEL_PATH] |
392 | 6b5605e8 | Iustin Pop | if not os.path.isfile(kernel_path): |
393 | 6b5605e8 | Iustin Pop | raise errors.HypervisorError("Instance kernel '%s' not found or" |
394 | 6b5605e8 | Iustin Pop | " not a file" % kernel_path)
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395 | 6b5605e8 | Iustin Pop | initrd_path = hvparams[constants.HV_INITRD_PATH] |
396 | 6b5605e8 | Iustin Pop | if initrd_path and not os.path.isfile(initrd_path): |
397 | 6b5605e8 | Iustin Pop | raise errors.HypervisorError("Instance initrd '%s' not found or" |
398 | 6b5605e8 | Iustin Pop | " not a file" % initrd_path) |