root / lib / hypervisor / hv_xen.py @ a4273aba
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1 | 65a6f9b7 | Michael Hanselmann | #
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2 | 65a6f9b7 | Michael Hanselmann | #
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3 | 65a6f9b7 | Michael Hanselmann | |
4 | 65a6f9b7 | Michael Hanselmann | # Copyright (C) 2006, 2007, 2008 Google Inc.
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5 | 65a6f9b7 | Michael Hanselmann | #
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6 | 65a6f9b7 | Michael Hanselmann | # This program is free software; you can redistribute it and/or modify
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7 | 65a6f9b7 | Michael Hanselmann | # it under the terms of the GNU General Public License as published by
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8 | 65a6f9b7 | Michael Hanselmann | # the Free Software Foundation; either version 2 of the License, or
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9 | 65a6f9b7 | Michael Hanselmann | # (at your option) any later version.
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10 | 65a6f9b7 | Michael Hanselmann | #
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11 | 65a6f9b7 | Michael Hanselmann | # This program is distributed in the hope that it will be useful, but
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12 | 65a6f9b7 | Michael Hanselmann | # WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | 65a6f9b7 | Michael Hanselmann | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | 65a6f9b7 | Michael Hanselmann | # General Public License for more details.
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15 | 65a6f9b7 | Michael Hanselmann | #
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16 | 65a6f9b7 | Michael Hanselmann | # You should have received a copy of the GNU General Public License
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17 | 65a6f9b7 | Michael Hanselmann | # along with this program; if not, write to the Free Software
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18 | 65a6f9b7 | Michael Hanselmann | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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19 | 65a6f9b7 | Michael Hanselmann | # 02110-1301, USA.
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20 | 65a6f9b7 | Michael Hanselmann | |
21 | 65a6f9b7 | Michael Hanselmann | |
22 | 65a6f9b7 | Michael Hanselmann | """Xen hypervisors
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23 | 65a6f9b7 | Michael Hanselmann |
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24 | 65a6f9b7 | Michael Hanselmann | """
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25 | 65a6f9b7 | Michael Hanselmann | |
26 | 65a6f9b7 | Michael Hanselmann | import os |
27 | 65a6f9b7 | Michael Hanselmann | import os.path |
28 | 65a6f9b7 | Michael Hanselmann | import time |
29 | 65a6f9b7 | Michael Hanselmann | from cStringIO import StringIO |
30 | 65a6f9b7 | Michael Hanselmann | |
31 | 65a6f9b7 | Michael Hanselmann | from ganeti import constants |
32 | 65a6f9b7 | Michael Hanselmann | from ganeti import errors |
33 | 65a6f9b7 | Michael Hanselmann | from ganeti import logger |
34 | 65a6f9b7 | Michael Hanselmann | from ganeti import utils |
35 | a2d32034 | Michael Hanselmann | from ganeti.hypervisor import hv_base |
36 | 65a6f9b7 | Michael Hanselmann | |
37 | 65a6f9b7 | Michael Hanselmann | |
38 | a2d32034 | Michael Hanselmann | class XenHypervisor(hv_base.BaseHypervisor): |
39 | 65a6f9b7 | Michael Hanselmann | """Xen generic hypervisor interface
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40 | 65a6f9b7 | Michael Hanselmann |
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41 | 65a6f9b7 | Michael Hanselmann | This is the Xen base class used for both Xen PVM and HVM. It contains
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42 | 65a6f9b7 | Michael Hanselmann | all the functionality that is identical for both.
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43 | 65a6f9b7 | Michael Hanselmann |
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44 | 65a6f9b7 | Michael Hanselmann | """
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45 | 65a6f9b7 | Michael Hanselmann | |
46 | 65a6f9b7 | Michael Hanselmann | @staticmethod
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47 | 65a6f9b7 | Michael Hanselmann | def _WriteConfigFile(instance, block_devices, extra_args): |
48 | 65a6f9b7 | Michael Hanselmann | """Write the Xen config file for the instance.
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49 | 65a6f9b7 | Michael Hanselmann |
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50 | 65a6f9b7 | Michael Hanselmann | """
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51 | 65a6f9b7 | Michael Hanselmann | raise NotImplementedError |
52 | 65a6f9b7 | Michael Hanselmann | |
53 | 65a6f9b7 | Michael Hanselmann | @staticmethod
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54 | 65a6f9b7 | Michael Hanselmann | def _RemoveConfigFile(instance): |
55 | 65a6f9b7 | Michael Hanselmann | """Remove the xen configuration file.
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56 | 65a6f9b7 | Michael Hanselmann |
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57 | 65a6f9b7 | Michael Hanselmann | """
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58 | 65a6f9b7 | Michael Hanselmann | utils.RemoveFile("/etc/xen/%s" % instance.name)
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59 | 65a6f9b7 | Michael Hanselmann | |
60 | 65a6f9b7 | Michael Hanselmann | @staticmethod
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61 | 65a6f9b7 | Michael Hanselmann | def _GetXMList(include_node): |
62 | 65a6f9b7 | Michael Hanselmann | """Return the list of running instances.
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63 | 65a6f9b7 | Michael Hanselmann |
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64 | 65a6f9b7 | Michael Hanselmann | If the `include_node` argument is True, then we return information
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65 | 65a6f9b7 | Michael Hanselmann | for dom0 also, otherwise we filter that from the return value.
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66 | 65a6f9b7 | Michael Hanselmann |
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67 | 65a6f9b7 | Michael Hanselmann | The return value is a list of (name, id, memory, vcpus, state, time spent)
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68 | 65a6f9b7 | Michael Hanselmann |
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69 | 65a6f9b7 | Michael Hanselmann | """
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70 | 65a6f9b7 | Michael Hanselmann | for dummy in range(5): |
71 | 65a6f9b7 | Michael Hanselmann | result = utils.RunCmd(["xm", "list"]) |
72 | 65a6f9b7 | Michael Hanselmann | if not result.failed: |
73 | 65a6f9b7 | Michael Hanselmann | break
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74 | 65a6f9b7 | Michael Hanselmann | logger.Error("xm list failed (%s): %s" % (result.fail_reason,
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75 | 65a6f9b7 | Michael Hanselmann | result.output)) |
76 | 65a6f9b7 | Michael Hanselmann | time.sleep(1)
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77 | 65a6f9b7 | Michael Hanselmann | |
78 | 65a6f9b7 | Michael Hanselmann | if result.failed:
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79 | 65a6f9b7 | Michael Hanselmann | raise errors.HypervisorError("xm list failed, retries" |
80 | 65a6f9b7 | Michael Hanselmann | " exceeded (%s): %s" %
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81 | 65a6f9b7 | Michael Hanselmann | (result.fail_reason, result.stderr)) |
82 | 65a6f9b7 | Michael Hanselmann | |
83 | 65a6f9b7 | Michael Hanselmann | # skip over the heading
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84 | 65a6f9b7 | Michael Hanselmann | lines = result.stdout.splitlines()[1:]
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85 | 65a6f9b7 | Michael Hanselmann | result = [] |
86 | 65a6f9b7 | Michael Hanselmann | for line in lines: |
87 | 65a6f9b7 | Michael Hanselmann | # The format of lines is:
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88 | 65a6f9b7 | Michael Hanselmann | # Name ID Mem(MiB) VCPUs State Time(s)
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89 | 65a6f9b7 | Michael Hanselmann | # Domain-0 0 3418 4 r----- 266.2
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90 | 65a6f9b7 | Michael Hanselmann | data = line.split() |
91 | 65a6f9b7 | Michael Hanselmann | if len(data) != 6: |
92 | 65a6f9b7 | Michael Hanselmann | raise errors.HypervisorError("Can't parse output of xm list," |
93 | 65a6f9b7 | Michael Hanselmann | " line: %s" % line)
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94 | 65a6f9b7 | Michael Hanselmann | try:
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95 | 65a6f9b7 | Michael Hanselmann | data[1] = int(data[1]) |
96 | 65a6f9b7 | Michael Hanselmann | data[2] = int(data[2]) |
97 | 65a6f9b7 | Michael Hanselmann | data[3] = int(data[3]) |
98 | 65a6f9b7 | Michael Hanselmann | data[5] = float(data[5]) |
99 | 65a6f9b7 | Michael Hanselmann | except ValueError, err: |
100 | 65a6f9b7 | Michael Hanselmann | raise errors.HypervisorError("Can't parse output of xm list," |
101 | 65a6f9b7 | Michael Hanselmann | " line: %s, error: %s" % (line, err))
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102 | 65a6f9b7 | Michael Hanselmann | |
103 | 65a6f9b7 | Michael Hanselmann | # skip the Domain-0 (optional)
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104 | 65a6f9b7 | Michael Hanselmann | if include_node or data[0] != 'Domain-0': |
105 | 65a6f9b7 | Michael Hanselmann | result.append(data) |
106 | 65a6f9b7 | Michael Hanselmann | |
107 | 65a6f9b7 | Michael Hanselmann | return result
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108 | 65a6f9b7 | Michael Hanselmann | |
109 | 65a6f9b7 | Michael Hanselmann | def ListInstances(self): |
110 | 65a6f9b7 | Michael Hanselmann | """Get the list of running instances.
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111 | 65a6f9b7 | Michael Hanselmann |
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112 | 65a6f9b7 | Michael Hanselmann | """
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113 | 65a6f9b7 | Michael Hanselmann | xm_list = self._GetXMList(False) |
114 | 65a6f9b7 | Michael Hanselmann | names = [info[0] for info in xm_list] |
115 | 65a6f9b7 | Michael Hanselmann | return names
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116 | 65a6f9b7 | Michael Hanselmann | |
117 | 65a6f9b7 | Michael Hanselmann | def GetInstanceInfo(self, instance_name): |
118 | 65a6f9b7 | Michael Hanselmann | """Get instance properties.
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119 | 65a6f9b7 | Michael Hanselmann |
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120 | 65a6f9b7 | Michael Hanselmann | Args:
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121 | 65a6f9b7 | Michael Hanselmann | instance_name: the instance name
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122 | 65a6f9b7 | Michael Hanselmann |
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123 | 65a6f9b7 | Michael Hanselmann | Returns:
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124 | 65a6f9b7 | Michael Hanselmann | (name, id, memory, vcpus, stat, times)
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125 | 65a6f9b7 | Michael Hanselmann | """
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126 | 65a6f9b7 | Michael Hanselmann | xm_list = self._GetXMList(instance_name=="Domain-0") |
127 | 65a6f9b7 | Michael Hanselmann | result = None
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128 | 65a6f9b7 | Michael Hanselmann | for data in xm_list: |
129 | 65a6f9b7 | Michael Hanselmann | if data[0] == instance_name: |
130 | 65a6f9b7 | Michael Hanselmann | result = data |
131 | 65a6f9b7 | Michael Hanselmann | break
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132 | 65a6f9b7 | Michael Hanselmann | return result
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133 | 65a6f9b7 | Michael Hanselmann | |
134 | 65a6f9b7 | Michael Hanselmann | def GetAllInstancesInfo(self): |
135 | 65a6f9b7 | Michael Hanselmann | """Get properties of all instances.
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136 | 65a6f9b7 | Michael Hanselmann |
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137 | 65a6f9b7 | Michael Hanselmann | Returns:
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138 | 65a6f9b7 | Michael Hanselmann | [(name, id, memory, vcpus, stat, times),...]
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139 | 65a6f9b7 | Michael Hanselmann | """
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140 | 65a6f9b7 | Michael Hanselmann | xm_list = self._GetXMList(False) |
141 | 65a6f9b7 | Michael Hanselmann | return xm_list
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142 | 65a6f9b7 | Michael Hanselmann | |
143 | 65a6f9b7 | Michael Hanselmann | def StartInstance(self, instance, block_devices, extra_args): |
144 | 65a6f9b7 | Michael Hanselmann | """Start an instance."""
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145 | 65a6f9b7 | Michael Hanselmann | self._WriteConfigFile(instance, block_devices, extra_args)
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146 | 65a6f9b7 | Michael Hanselmann | result = utils.RunCmd(["xm", "create", instance.name]) |
147 | 65a6f9b7 | Michael Hanselmann | |
148 | 65a6f9b7 | Michael Hanselmann | if result.failed:
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149 | 65a6f9b7 | Michael Hanselmann | raise errors.HypervisorError("Failed to start instance %s: %s (%s)" % |
150 | 65a6f9b7 | Michael Hanselmann | (instance.name, result.fail_reason, |
151 | 65a6f9b7 | Michael Hanselmann | result.output)) |
152 | 65a6f9b7 | Michael Hanselmann | |
153 | 65a6f9b7 | Michael Hanselmann | def StopInstance(self, instance, force=False): |
154 | 65a6f9b7 | Michael Hanselmann | """Stop an instance."""
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155 | 65a6f9b7 | Michael Hanselmann | self._RemoveConfigFile(instance)
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156 | 65a6f9b7 | Michael Hanselmann | if force:
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157 | 65a6f9b7 | Michael Hanselmann | command = ["xm", "destroy", instance.name] |
158 | 65a6f9b7 | Michael Hanselmann | else:
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159 | 65a6f9b7 | Michael Hanselmann | command = ["xm", "shutdown", instance.name] |
160 | 65a6f9b7 | Michael Hanselmann | result = utils.RunCmd(command) |
161 | 65a6f9b7 | Michael Hanselmann | |
162 | 65a6f9b7 | Michael Hanselmann | if result.failed:
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163 | 65a6f9b7 | Michael Hanselmann | raise errors.HypervisorError("Failed to stop instance %s: %s" % |
164 | 65a6f9b7 | Michael Hanselmann | (instance.name, result.fail_reason)) |
165 | 65a6f9b7 | Michael Hanselmann | |
166 | 65a6f9b7 | Michael Hanselmann | def RebootInstance(self, instance): |
167 | 65a6f9b7 | Michael Hanselmann | """Reboot an instance."""
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168 | 65a6f9b7 | Michael Hanselmann | result = utils.RunCmd(["xm", "reboot", instance.name]) |
169 | 65a6f9b7 | Michael Hanselmann | |
170 | 65a6f9b7 | Michael Hanselmann | if result.failed:
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171 | 65a6f9b7 | Michael Hanselmann | raise errors.HypervisorError("Failed to reboot instance %s: %s" % |
172 | 65a6f9b7 | Michael Hanselmann | (instance.name, result.fail_reason)) |
173 | 65a6f9b7 | Michael Hanselmann | |
174 | 65a6f9b7 | Michael Hanselmann | def GetNodeInfo(self): |
175 | 65a6f9b7 | Michael Hanselmann | """Return information about the node.
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176 | 65a6f9b7 | Michael Hanselmann |
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177 | 65a6f9b7 | Michael Hanselmann | The return value is a dict, which has to have the following items:
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178 | 65a6f9b7 | Michael Hanselmann | (all values in MiB)
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179 | 65a6f9b7 | Michael Hanselmann | - memory_total: the total memory size on the node
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180 | 65a6f9b7 | Michael Hanselmann | - memory_free: the available memory on the node for instances
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181 | 65a6f9b7 | Michael Hanselmann | - memory_dom0: the memory used by the node itself, if available
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182 | 65a6f9b7 | Michael Hanselmann |
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183 | 65a6f9b7 | Michael Hanselmann | """
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184 | 65a6f9b7 | Michael Hanselmann | # note: in xen 3, memory has changed to total_memory
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185 | 65a6f9b7 | Michael Hanselmann | result = utils.RunCmd(["xm", "info"]) |
186 | 65a6f9b7 | Michael Hanselmann | if result.failed:
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187 | 65a6f9b7 | Michael Hanselmann | logger.Error("Can't run 'xm info': %s" % result.fail_reason)
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188 | 65a6f9b7 | Michael Hanselmann | return None |
189 | 65a6f9b7 | Michael Hanselmann | |
190 | 65a6f9b7 | Michael Hanselmann | xmoutput = result.stdout.splitlines() |
191 | 65a6f9b7 | Michael Hanselmann | result = {} |
192 | 65a6f9b7 | Michael Hanselmann | for line in xmoutput: |
193 | 65a6f9b7 | Michael Hanselmann | splitfields = line.split(":", 1) |
194 | 65a6f9b7 | Michael Hanselmann | |
195 | 65a6f9b7 | Michael Hanselmann | if len(splitfields) > 1: |
196 | 65a6f9b7 | Michael Hanselmann | key = splitfields[0].strip()
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197 | 65a6f9b7 | Michael Hanselmann | val = splitfields[1].strip()
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198 | 65a6f9b7 | Michael Hanselmann | if key == 'memory' or key == 'total_memory': |
199 | 65a6f9b7 | Michael Hanselmann | result['memory_total'] = int(val) |
200 | 65a6f9b7 | Michael Hanselmann | elif key == 'free_memory': |
201 | 65a6f9b7 | Michael Hanselmann | result['memory_free'] = int(val) |
202 | e8a4c138 | Iustin Pop | elif key == 'nr_cpus': |
203 | e8a4c138 | Iustin Pop | result['cpu_total'] = int(val) |
204 | 65a6f9b7 | Michael Hanselmann | dom0_info = self.GetInstanceInfo("Domain-0") |
205 | 65a6f9b7 | Michael Hanselmann | if dom0_info is not None: |
206 | 65a6f9b7 | Michael Hanselmann | result['memory_dom0'] = dom0_info[2] |
207 | 65a6f9b7 | Michael Hanselmann | |
208 | 65a6f9b7 | Michael Hanselmann | return result
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209 | 65a6f9b7 | Michael Hanselmann | |
210 | 65a6f9b7 | Michael Hanselmann | @staticmethod
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211 | 65a6f9b7 | Michael Hanselmann | def GetShellCommandForConsole(instance): |
212 | 65a6f9b7 | Michael Hanselmann | """Return a command for connecting to the console of an instance.
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213 | 65a6f9b7 | Michael Hanselmann |
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214 | 65a6f9b7 | Michael Hanselmann | """
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215 | 04c4330c | Alexander Schreiber | return "xm console %s" % instance.name |
216 | 04c4330c | Alexander Schreiber | |
217 | 65a6f9b7 | Michael Hanselmann | |
218 | 65a6f9b7 | Michael Hanselmann | def Verify(self): |
219 | 65a6f9b7 | Michael Hanselmann | """Verify the hypervisor.
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220 | 65a6f9b7 | Michael Hanselmann |
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221 | 65a6f9b7 | Michael Hanselmann | For Xen, this verifies that the xend process is running.
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222 | 65a6f9b7 | Michael Hanselmann |
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223 | 65a6f9b7 | Michael Hanselmann | """
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224 | e3e66f02 | Michael Hanselmann | result = utils.RunCmd(["xm", "info"]) |
225 | e3e66f02 | Michael Hanselmann | if result.failed:
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226 | e3e66f02 | Michael Hanselmann | return "'xm info' failed: %s" % result.fail_reason |
227 | 65a6f9b7 | Michael Hanselmann | |
228 | 65a6f9b7 | Michael Hanselmann | @staticmethod
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229 | 65a6f9b7 | Michael Hanselmann | def _GetConfigFileDiskData(disk_template, block_devices): |
230 | 65a6f9b7 | Michael Hanselmann | """Get disk directive for xen config file.
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231 | 65a6f9b7 | Michael Hanselmann |
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232 | 65a6f9b7 | Michael Hanselmann | This method builds the xen config disk directive according to the
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233 | 65a6f9b7 | Michael Hanselmann | given disk_template and block_devices.
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234 | 65a6f9b7 | Michael Hanselmann |
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235 | 65a6f9b7 | Michael Hanselmann | Args:
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236 | 65a6f9b7 | Michael Hanselmann | disk_template: String containing instance disk template
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237 | 65a6f9b7 | Michael Hanselmann | block_devices: List[tuple1,tuple2,...]
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238 | 65a6f9b7 | Michael Hanselmann | tuple: (cfdev, rldev)
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239 | 65a6f9b7 | Michael Hanselmann | cfdev: dict containing ganeti config disk part
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240 | 65a6f9b7 | Michael Hanselmann | rldev: ganeti.bdev.BlockDev object
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241 | 65a6f9b7 | Michael Hanselmann |
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242 | 65a6f9b7 | Michael Hanselmann | Returns:
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243 | 65a6f9b7 | Michael Hanselmann | String containing disk directive for xen instance config file
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244 | 65a6f9b7 | Michael Hanselmann |
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245 | 65a6f9b7 | Michael Hanselmann | """
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246 | 65a6f9b7 | Michael Hanselmann | FILE_DRIVER_MAP = { |
247 | 65a6f9b7 | Michael Hanselmann | constants.FD_LOOP: "file",
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248 | 65a6f9b7 | Michael Hanselmann | constants.FD_BLKTAP: "tap:aio",
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249 | 65a6f9b7 | Michael Hanselmann | } |
250 | 65a6f9b7 | Michael Hanselmann | disk_data = [] |
251 | 65a6f9b7 | Michael Hanselmann | for cfdev, rldev in block_devices: |
252 | 65a6f9b7 | Michael Hanselmann | if cfdev.dev_type == constants.LD_FILE:
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253 | 65a6f9b7 | Michael Hanselmann | line = "'%s:%s,%s,w'" % (FILE_DRIVER_MAP[cfdev.physical_id[0]], |
254 | 65a6f9b7 | Michael Hanselmann | rldev.dev_path, cfdev.iv_name) |
255 | 65a6f9b7 | Michael Hanselmann | else:
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256 | 65a6f9b7 | Michael Hanselmann | line = "'phy:%s,%s,w'" % (rldev.dev_path, cfdev.iv_name)
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257 | 65a6f9b7 | Michael Hanselmann | disk_data.append(line) |
258 | 65a6f9b7 | Michael Hanselmann | |
259 | 65a6f9b7 | Michael Hanselmann | return disk_data
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260 | 65a6f9b7 | Michael Hanselmann | |
261 | 6e7275c0 | Iustin Pop | def MigrateInstance(self, instance, target, live): |
262 | 6e7275c0 | Iustin Pop | """Migrate an instance to a target node.
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263 | 6e7275c0 | Iustin Pop |
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264 | 6e7275c0 | Iustin Pop | Arguments:
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265 | 6e7275c0 | Iustin Pop | - instance: the name of the instance
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266 | 6e7275c0 | Iustin Pop | - target: the ip of the target node
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267 | 6e7275c0 | Iustin Pop | - live: whether to do live migration or not
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268 | 6e7275c0 | Iustin Pop |
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269 | 6e7275c0 | Iustin Pop | Returns: none, errors will be signaled by exception.
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270 | 6e7275c0 | Iustin Pop |
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271 | 6e7275c0 | Iustin Pop | The migration will not be attempted if the instance is not
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272 | 6e7275c0 | Iustin Pop | currently running.
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273 | 6e7275c0 | Iustin Pop |
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274 | 6e7275c0 | Iustin Pop | """
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275 | 6e7275c0 | Iustin Pop | if self.GetInstanceInfo(instance) is None: |
276 | 6e7275c0 | Iustin Pop | raise errors.HypervisorError("Instance not running, cannot migrate") |
277 | 6e7275c0 | Iustin Pop | args = ["xm", "migrate"] |
278 | 6e7275c0 | Iustin Pop | if live:
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279 | 6e7275c0 | Iustin Pop | args.append("-l")
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280 | 6e7275c0 | Iustin Pop | args.extend([instance, target]) |
281 | 6e7275c0 | Iustin Pop | result = utils.RunCmd(args) |
282 | 6e7275c0 | Iustin Pop | if result.failed:
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283 | 6e7275c0 | Iustin Pop | raise errors.HypervisorError("Failed to migrate instance %s: %s" % |
284 | 6e7275c0 | Iustin Pop | (instance, result.output)) |
285 | 6e7275c0 | Iustin Pop | |
286 | 65a6f9b7 | Michael Hanselmann | |
287 | 65a6f9b7 | Michael Hanselmann | class XenPvmHypervisor(XenHypervisor): |
288 | 65a6f9b7 | Michael Hanselmann | """Xen PVM hypervisor interface"""
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289 | 65a6f9b7 | Michael Hanselmann | |
290 | 65a6f9b7 | Michael Hanselmann | @classmethod
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291 | 65a6f9b7 | Michael Hanselmann | def _WriteConfigFile(cls, instance, block_devices, extra_args): |
292 | 65a6f9b7 | Michael Hanselmann | """Write the Xen config file for the instance.
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293 | 65a6f9b7 | Michael Hanselmann |
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294 | 65a6f9b7 | Michael Hanselmann | """
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295 | 65a6f9b7 | Michael Hanselmann | config = StringIO() |
296 | 65a6f9b7 | Michael Hanselmann | config.write("# this is autogenerated by Ganeti, please do not edit\n#\n")
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297 | 65a6f9b7 | Michael Hanselmann | |
298 | 65a6f9b7 | Michael Hanselmann | # kernel handling
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299 | 65a6f9b7 | Michael Hanselmann | if instance.kernel_path in (None, constants.VALUE_DEFAULT): |
300 | 65a6f9b7 | Michael Hanselmann | kpath = constants.XEN_KERNEL |
301 | 65a6f9b7 | Michael Hanselmann | else:
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302 | 65a6f9b7 | Michael Hanselmann | if not os.path.exists(instance.kernel_path): |
303 | 65a6f9b7 | Michael Hanselmann | raise errors.HypervisorError("The kernel %s for instance %s is" |
304 | 65a6f9b7 | Michael Hanselmann | " missing" % (instance.kernel_path,
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305 | 65a6f9b7 | Michael Hanselmann | instance.name)) |
306 | 65a6f9b7 | Michael Hanselmann | kpath = instance.kernel_path |
307 | 65a6f9b7 | Michael Hanselmann | config.write("kernel = '%s'\n" % kpath)
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308 | 65a6f9b7 | Michael Hanselmann | |
309 | 65a6f9b7 | Michael Hanselmann | # initrd handling
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310 | 65a6f9b7 | Michael Hanselmann | if instance.initrd_path in (None, constants.VALUE_DEFAULT): |
311 | 65a6f9b7 | Michael Hanselmann | if os.path.exists(constants.XEN_INITRD):
|
312 | 65a6f9b7 | Michael Hanselmann | initrd_path = constants.XEN_INITRD |
313 | 65a6f9b7 | Michael Hanselmann | else:
|
314 | 65a6f9b7 | Michael Hanselmann | initrd_path = None
|
315 | 65a6f9b7 | Michael Hanselmann | elif instance.initrd_path == constants.VALUE_NONE:
|
316 | 65a6f9b7 | Michael Hanselmann | initrd_path = None
|
317 | 65a6f9b7 | Michael Hanselmann | else:
|
318 | 65a6f9b7 | Michael Hanselmann | if not os.path.exists(instance.initrd_path): |
319 | 65a6f9b7 | Michael Hanselmann | raise errors.HypervisorError("The initrd %s for instance %s is" |
320 | 65a6f9b7 | Michael Hanselmann | " missing" % (instance.initrd_path,
|
321 | 65a6f9b7 | Michael Hanselmann | instance.name)) |
322 | 65a6f9b7 | Michael Hanselmann | initrd_path = instance.initrd_path |
323 | 65a6f9b7 | Michael Hanselmann | |
324 | 65a6f9b7 | Michael Hanselmann | if initrd_path:
|
325 | 65a6f9b7 | Michael Hanselmann | config.write("ramdisk = '%s'\n" % initrd_path)
|
326 | 65a6f9b7 | Michael Hanselmann | |
327 | 65a6f9b7 | Michael Hanselmann | # rest of the settings
|
328 | 65a6f9b7 | Michael Hanselmann | config.write("memory = %d\n" % instance.memory)
|
329 | 65a6f9b7 | Michael Hanselmann | config.write("vcpus = %d\n" % instance.vcpus)
|
330 | 65a6f9b7 | Michael Hanselmann | config.write("name = '%s'\n" % instance.name)
|
331 | 65a6f9b7 | Michael Hanselmann | |
332 | 65a6f9b7 | Michael Hanselmann | vif_data = [] |
333 | 65a6f9b7 | Michael Hanselmann | for nic in instance.nics: |
334 | 65a6f9b7 | Michael Hanselmann | nic_str = "mac=%s, bridge=%s" % (nic.mac, nic.bridge)
|
335 | 65a6f9b7 | Michael Hanselmann | ip = getattr(nic, "ip", None) |
336 | 65a6f9b7 | Michael Hanselmann | if ip is not None: |
337 | 65a6f9b7 | Michael Hanselmann | nic_str += ", ip=%s" % ip
|
338 | 65a6f9b7 | Michael Hanselmann | vif_data.append("'%s'" % nic_str)
|
339 | 65a6f9b7 | Michael Hanselmann | |
340 | 65a6f9b7 | Michael Hanselmann | config.write("vif = [%s]\n" % ",".join(vif_data)) |
341 | 65a6f9b7 | Michael Hanselmann | config.write("disk = [%s]\n" % ",".join( |
342 | 65a6f9b7 | Michael Hanselmann | cls._GetConfigFileDiskData(instance.disk_template, |
343 | 65a6f9b7 | Michael Hanselmann | block_devices))) |
344 | 65a6f9b7 | Michael Hanselmann | config.write("root = '/dev/sda ro'\n")
|
345 | 65a6f9b7 | Michael Hanselmann | config.write("on_poweroff = 'destroy'\n")
|
346 | 65a6f9b7 | Michael Hanselmann | config.write("on_reboot = 'restart'\n")
|
347 | 65a6f9b7 | Michael Hanselmann | config.write("on_crash = 'restart'\n")
|
348 | 65a6f9b7 | Michael Hanselmann | if extra_args:
|
349 | 65a6f9b7 | Michael Hanselmann | config.write("extra = '%s'\n" % extra_args)
|
350 | 65a6f9b7 | Michael Hanselmann | # just in case it exists
|
351 | 65a6f9b7 | Michael Hanselmann | utils.RemoveFile("/etc/xen/auto/%s" % instance.name)
|
352 | 65a6f9b7 | Michael Hanselmann | try:
|
353 | 65a6f9b7 | Michael Hanselmann | f = open("/etc/xen/%s" % instance.name, "w") |
354 | 65a6f9b7 | Michael Hanselmann | try:
|
355 | 65a6f9b7 | Michael Hanselmann | f.write(config.getvalue()) |
356 | 65a6f9b7 | Michael Hanselmann | finally:
|
357 | 65a6f9b7 | Michael Hanselmann | f.close() |
358 | 65a6f9b7 | Michael Hanselmann | except IOError, err: |
359 | 65a6f9b7 | Michael Hanselmann | raise errors.OpExecError("Cannot write Xen instance confile" |
360 | 65a6f9b7 | Michael Hanselmann | " file /etc/xen/%s: %s" % (instance.name, err))
|
361 | 65a6f9b7 | Michael Hanselmann | return True |
362 | 65a6f9b7 | Michael Hanselmann | |
363 | 65a6f9b7 | Michael Hanselmann | |
364 | 65a6f9b7 | Michael Hanselmann | class XenHvmHypervisor(XenHypervisor): |
365 | 65a6f9b7 | Michael Hanselmann | """Xen HVM hypervisor interface"""
|
366 | 65a6f9b7 | Michael Hanselmann | |
367 | 65a6f9b7 | Michael Hanselmann | @classmethod
|
368 | 65a6f9b7 | Michael Hanselmann | def _WriteConfigFile(cls, instance, block_devices, extra_args): |
369 | 65a6f9b7 | Michael Hanselmann | """Create a Xen 3.1 HVM config file.
|
370 | 65a6f9b7 | Michael Hanselmann |
|
371 | 65a6f9b7 | Michael Hanselmann | """
|
372 | 65a6f9b7 | Michael Hanselmann | config = StringIO() |
373 | 65a6f9b7 | Michael Hanselmann | config.write("# this is autogenerated by Ganeti, please do not edit\n#\n")
|
374 | 65a6f9b7 | Michael Hanselmann | config.write("kernel = '/usr/lib/xen/boot/hvmloader'\n")
|
375 | 65a6f9b7 | Michael Hanselmann | config.write("builder = 'hvm'\n")
|
376 | 65a6f9b7 | Michael Hanselmann | config.write("memory = %d\n" % instance.memory)
|
377 | 65a6f9b7 | Michael Hanselmann | config.write("vcpus = %d\n" % instance.vcpus)
|
378 | 65a6f9b7 | Michael Hanselmann | config.write("name = '%s'\n" % instance.name)
|
379 | a21dda8b | Iustin Pop | if instance.hvm_pae:
|
380 | a21dda8b | Iustin Pop | config.write("pae = 1\n")
|
381 | a21dda8b | Iustin Pop | else:
|
382 | a21dda8b | Iustin Pop | config.write("pae = 0\n")
|
383 | a21dda8b | Iustin Pop | if instance.hvm_acpi:
|
384 | a21dda8b | Iustin Pop | config.write("acpi = 1\n")
|
385 | a21dda8b | Iustin Pop | else:
|
386 | a21dda8b | Iustin Pop | config.write("acpi = 0\n")
|
387 | 65a6f9b7 | Michael Hanselmann | config.write("apic = 1\n")
|
388 | 65a6f9b7 | Michael Hanselmann | arch = os.uname()[4]
|
389 | 65a6f9b7 | Michael Hanselmann | if '64' in arch: |
390 | 65a6f9b7 | Michael Hanselmann | config.write("device_model = '/usr/lib64/xen/bin/qemu-dm'\n")
|
391 | 65a6f9b7 | Michael Hanselmann | else:
|
392 | 65a6f9b7 | Michael Hanselmann | config.write("device_model = '/usr/lib/xen/bin/qemu-dm'\n")
|
393 | 65a6f9b7 | Michael Hanselmann | if instance.hvm_boot_order is None: |
394 | 65a6f9b7 | Michael Hanselmann | config.write("boot = '%s'\n" % constants.HT_HVM_DEFAULT_BOOT_ORDER)
|
395 | 65a6f9b7 | Michael Hanselmann | else:
|
396 | 65a6f9b7 | Michael Hanselmann | config.write("boot = '%s'\n" % instance.hvm_boot_order)
|
397 | 65a6f9b7 | Michael Hanselmann | config.write("sdl = 0\n")
|
398 | 97efde45 | Guido Trotter | config.write("usb = 1\n")
|
399 | 97efde45 | Guido Trotter | config.write("usbdevice = 'tablet'\n")
|
400 | 65a6f9b7 | Michael Hanselmann | config.write("vnc = 1\n")
|
401 | a21dda8b | Iustin Pop | config.write("vnclisten = '%s'\n" % instance.vnc_bind_address)
|
402 | 65a6f9b7 | Michael Hanselmann | |
403 | 65a6f9b7 | Michael Hanselmann | if instance.network_port > constants.HT_HVM_VNC_BASE_PORT:
|
404 | 65a6f9b7 | Michael Hanselmann | display = instance.network_port - constants.HT_HVM_VNC_BASE_PORT |
405 | 65a6f9b7 | Michael Hanselmann | config.write("vncdisplay = %s\n" % display)
|
406 | 65a6f9b7 | Michael Hanselmann | config.write("vncunused = 0\n")
|
407 | 65a6f9b7 | Michael Hanselmann | else:
|
408 | 65a6f9b7 | Michael Hanselmann | config.write("# vncdisplay = 1\n")
|
409 | 65a6f9b7 | Michael Hanselmann | config.write("vncunused = 1\n")
|
410 | 65a6f9b7 | Michael Hanselmann | |
411 | 65a6f9b7 | Michael Hanselmann | try:
|
412 | 65a6f9b7 | Michael Hanselmann | password_file = open(constants.VNC_PASSWORD_FILE, "r") |
413 | 65a6f9b7 | Michael Hanselmann | try:
|
414 | 65a6f9b7 | Michael Hanselmann | password = password_file.readline() |
415 | 65a6f9b7 | Michael Hanselmann | finally:
|
416 | 65a6f9b7 | Michael Hanselmann | password_file.close() |
417 | 65a6f9b7 | Michael Hanselmann | except IOError: |
418 | 65a6f9b7 | Michael Hanselmann | raise errors.OpExecError("failed to open VNC password file %s " % |
419 | 65a6f9b7 | Michael Hanselmann | constants.VNC_PASSWORD_FILE) |
420 | 65a6f9b7 | Michael Hanselmann | |
421 | 65a6f9b7 | Michael Hanselmann | config.write("vncpasswd = '%s'\n" % password.rstrip())
|
422 | 65a6f9b7 | Michael Hanselmann | |
423 | 65a6f9b7 | Michael Hanselmann | config.write("serial = 'pty'\n")
|
424 | 65a6f9b7 | Michael Hanselmann | config.write("localtime = 1\n")
|
425 | 65a6f9b7 | Michael Hanselmann | |
426 | 65a6f9b7 | Michael Hanselmann | vif_data = [] |
427 | 65a6f9b7 | Michael Hanselmann | for nic in instance.nics: |
428 | 5397e0b7 | Alexander Schreiber | if instance.hvm_nic_type is None: # ensure old instances don't change |
429 | 5397e0b7 | Alexander Schreiber | nic_type = ", type=ioemu"
|
430 | 5397e0b7 | Alexander Schreiber | elif instance.hvm_nic_type == constants.HT_HVM_DEV_PARAVIRTUAL:
|
431 | 5397e0b7 | Alexander Schreiber | nic_type = ", type=paravirtualized"
|
432 | 5397e0b7 | Alexander Schreiber | else:
|
433 | 5397e0b7 | Alexander Schreiber | nic_type = ", model=%s, type=ioemu" % instance.hvm_nic_type
|
434 | 5397e0b7 | Alexander Schreiber | |
435 | 5397e0b7 | Alexander Schreiber | nic_str = "mac=%s, bridge=%s%s" % (nic.mac, nic.bridge, nic_type)
|
436 | 65a6f9b7 | Michael Hanselmann | ip = getattr(nic, "ip", None) |
437 | 65a6f9b7 | Michael Hanselmann | if ip is not None: |
438 | 65a6f9b7 | Michael Hanselmann | nic_str += ", ip=%s" % ip
|
439 | 65a6f9b7 | Michael Hanselmann | vif_data.append("'%s'" % nic_str)
|
440 | 65a6f9b7 | Michael Hanselmann | |
441 | 65a6f9b7 | Michael Hanselmann | config.write("vif = [%s]\n" % ",".join(vif_data)) |
442 | a21dda8b | Iustin Pop | disk_data = cls._GetConfigFileDiskData(instance.disk_template, |
443 | a21dda8b | Iustin Pop | block_devices) |
444 | 5397e0b7 | Alexander Schreiber | if ((instance.hvm_disk_type is None) or |
445 | 5397e0b7 | Alexander Schreiber | (instance.hvm_disk_type == constants.HT_HVM_DEV_IOEMU)): |
446 | 5397e0b7 | Alexander Schreiber | replacement = ",ioemu:hd"
|
447 | 5397e0b7 | Alexander Schreiber | else:
|
448 | 5397e0b7 | Alexander Schreiber | replacement = ",hd"
|
449 | 5397e0b7 | Alexander Schreiber | disk_data = [line.replace(",sd", replacement) for line in disk_data] |
450 | a21dda8b | Iustin Pop | if instance.hvm_cdrom_image_path is not None: |
451 | a21dda8b | Iustin Pop | iso = "'file:%s,hdc:cdrom,r'" % (instance.hvm_cdrom_image_path)
|
452 | a21dda8b | Iustin Pop | disk_data.append(iso) |
453 | a21dda8b | Iustin Pop | |
454 | a21dda8b | Iustin Pop | config.write("disk = [%s]\n" % (",".join(disk_data))) |
455 | a21dda8b | Iustin Pop | |
456 | 65a6f9b7 | Michael Hanselmann | config.write("on_poweroff = 'destroy'\n")
|
457 | 65a6f9b7 | Michael Hanselmann | config.write("on_reboot = 'restart'\n")
|
458 | 65a6f9b7 | Michael Hanselmann | config.write("on_crash = 'restart'\n")
|
459 | 65a6f9b7 | Michael Hanselmann | if extra_args:
|
460 | 65a6f9b7 | Michael Hanselmann | config.write("extra = '%s'\n" % extra_args)
|
461 | 65a6f9b7 | Michael Hanselmann | # just in case it exists
|
462 | 65a6f9b7 | Michael Hanselmann | utils.RemoveFile("/etc/xen/auto/%s" % instance.name)
|
463 | 65a6f9b7 | Michael Hanselmann | try:
|
464 | 65a6f9b7 | Michael Hanselmann | f = open("/etc/xen/%s" % instance.name, "w") |
465 | 65a6f9b7 | Michael Hanselmann | try:
|
466 | 65a6f9b7 | Michael Hanselmann | f.write(config.getvalue()) |
467 | 65a6f9b7 | Michael Hanselmann | finally:
|
468 | 65a6f9b7 | Michael Hanselmann | f.close() |
469 | 65a6f9b7 | Michael Hanselmann | except IOError, err: |
470 | 65a6f9b7 | Michael Hanselmann | raise errors.OpExecError("Cannot write Xen instance confile" |
471 | 65a6f9b7 | Michael Hanselmann | " file /etc/xen/%s: %s" % (instance.name, err))
|
472 | 65a6f9b7 | Michael Hanselmann | return True |