root / lib / hypervisor / hv_xen.py @ 73cd67f4
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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 | b48909c8 | Iustin Pop | import logging |
30 | 65a6f9b7 | Michael Hanselmann | from cStringIO import StringIO |
31 | 65a6f9b7 | Michael Hanselmann | |
32 | 65a6f9b7 | Michael Hanselmann | from ganeti import constants |
33 | 65a6f9b7 | Michael Hanselmann | from ganeti import errors |
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 | 5661b908 | Iustin Pop | @classmethod
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47 | 5661b908 | Iustin Pop | def _WriteConfigFile(cls, 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 | 4390ccff | Guido Trotter | def _WriteConfigFileStatic(instance_name, data): |
55 | 4390ccff | Guido Trotter | """Write the Xen config file for the instance.
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56 | 4390ccff | Guido Trotter |
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57 | 4390ccff | Guido Trotter | This version of the function just writes the config file from static data.
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58 | 4390ccff | Guido Trotter |
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59 | 4390ccff | Guido Trotter | """
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60 | 4390ccff | Guido Trotter | utils.WriteFile("/etc/xen/%s" % instance_name, data=data)
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61 | 4390ccff | Guido Trotter | |
62 | 4390ccff | Guido Trotter | @staticmethod
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63 | 4390ccff | Guido Trotter | def _ReadConfigFile(instance_name): |
64 | 4390ccff | Guido Trotter | """Returns the contents of the instance config file.
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65 | 4390ccff | Guido Trotter |
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66 | 4390ccff | Guido Trotter | """
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67 | 4390ccff | Guido Trotter | try:
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68 | 4390ccff | Guido Trotter | file_content = utils.ReadFile("/etc/xen/%s" % instance_name)
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69 | 4390ccff | Guido Trotter | except EnvironmentError, err: |
70 | 4390ccff | Guido Trotter | raise errors.HypervisorError("Failed to load Xen config file: %s" % err) |
71 | 4390ccff | Guido Trotter | return file_content
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72 | 4390ccff | Guido Trotter | |
73 | 4390ccff | Guido Trotter | @staticmethod
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74 | 53c776b5 | Iustin Pop | def _RemoveConfigFile(instance_name): |
75 | 65a6f9b7 | Michael Hanselmann | """Remove the xen configuration file.
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76 | 65a6f9b7 | Michael Hanselmann |
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77 | 65a6f9b7 | Michael Hanselmann | """
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78 | 53c776b5 | Iustin Pop | utils.RemoveFile("/etc/xen/%s" % instance_name)
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79 | 65a6f9b7 | Michael Hanselmann | |
80 | 65a6f9b7 | Michael Hanselmann | @staticmethod
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81 | 65a6f9b7 | Michael Hanselmann | def _GetXMList(include_node): |
82 | 65a6f9b7 | Michael Hanselmann | """Return the list of running instances.
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83 | 65a6f9b7 | Michael Hanselmann |
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84 | c41eea6e | Iustin Pop | If the include_node argument is True, then we return information
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85 | 65a6f9b7 | Michael Hanselmann | for dom0 also, otherwise we filter that from the return value.
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86 | 65a6f9b7 | Michael Hanselmann |
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87 | c41eea6e | Iustin Pop | @return: list of (name, id, memory, vcpus, state, time spent)
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88 | 65a6f9b7 | Michael Hanselmann |
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89 | 65a6f9b7 | Michael Hanselmann | """
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90 | 65a6f9b7 | Michael Hanselmann | for dummy in range(5): |
91 | 65a6f9b7 | Michael Hanselmann | result = utils.RunCmd(["xm", "list"]) |
92 | 65a6f9b7 | Michael Hanselmann | if not result.failed: |
93 | 65a6f9b7 | Michael Hanselmann | break
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94 | b48909c8 | Iustin Pop | logging.error("xm list failed (%s): %s", result.fail_reason,
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95 | b48909c8 | Iustin Pop | result.output) |
96 | 65a6f9b7 | Michael Hanselmann | time.sleep(1)
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97 | 65a6f9b7 | Michael Hanselmann | |
98 | 65a6f9b7 | Michael Hanselmann | if result.failed:
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99 | 65a6f9b7 | Michael Hanselmann | raise errors.HypervisorError("xm list failed, retries" |
100 | 65a6f9b7 | Michael Hanselmann | " exceeded (%s): %s" %
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101 | 65a6f9b7 | Michael Hanselmann | (result.fail_reason, result.stderr)) |
102 | 65a6f9b7 | Michael Hanselmann | |
103 | 65a6f9b7 | Michael Hanselmann | # skip over the heading
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104 | 65a6f9b7 | Michael Hanselmann | lines = result.stdout.splitlines()[1:]
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105 | 65a6f9b7 | Michael Hanselmann | result = [] |
106 | 65a6f9b7 | Michael Hanselmann | for line in lines: |
107 | 65a6f9b7 | Michael Hanselmann | # The format of lines is:
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108 | 65a6f9b7 | Michael Hanselmann | # Name ID Mem(MiB) VCPUs State Time(s)
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109 | 65a6f9b7 | Michael Hanselmann | # Domain-0 0 3418 4 r----- 266.2
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110 | 65a6f9b7 | Michael Hanselmann | data = line.split() |
111 | 65a6f9b7 | Michael Hanselmann | if len(data) != 6: |
112 | 65a6f9b7 | Michael Hanselmann | raise errors.HypervisorError("Can't parse output of xm list," |
113 | 65a6f9b7 | Michael Hanselmann | " line: %s" % line)
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114 | 65a6f9b7 | Michael Hanselmann | try:
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115 | 65a6f9b7 | Michael Hanselmann | data[1] = int(data[1]) |
116 | 65a6f9b7 | Michael Hanselmann | data[2] = int(data[2]) |
117 | 65a6f9b7 | Michael Hanselmann | data[3] = int(data[3]) |
118 | 65a6f9b7 | Michael Hanselmann | data[5] = float(data[5]) |
119 | 65a6f9b7 | Michael Hanselmann | except ValueError, err: |
120 | 65a6f9b7 | Michael Hanselmann | raise errors.HypervisorError("Can't parse output of xm list," |
121 | 65a6f9b7 | Michael Hanselmann | " line: %s, error: %s" % (line, err))
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122 | 65a6f9b7 | Michael Hanselmann | |
123 | 65a6f9b7 | Michael Hanselmann | # skip the Domain-0 (optional)
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124 | 65a6f9b7 | Michael Hanselmann | if include_node or data[0] != 'Domain-0': |
125 | 65a6f9b7 | Michael Hanselmann | result.append(data) |
126 | 65a6f9b7 | Michael Hanselmann | |
127 | 65a6f9b7 | Michael Hanselmann | return result
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128 | 65a6f9b7 | Michael Hanselmann | |
129 | 65a6f9b7 | Michael Hanselmann | def ListInstances(self): |
130 | 65a6f9b7 | Michael Hanselmann | """Get the list of running instances.
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131 | 65a6f9b7 | Michael Hanselmann |
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132 | 65a6f9b7 | Michael Hanselmann | """
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133 | 65a6f9b7 | Michael Hanselmann | xm_list = self._GetXMList(False) |
134 | 65a6f9b7 | Michael Hanselmann | names = [info[0] for info in xm_list] |
135 | 65a6f9b7 | Michael Hanselmann | return names
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136 | 65a6f9b7 | Michael Hanselmann | |
137 | 65a6f9b7 | Michael Hanselmann | def GetInstanceInfo(self, instance_name): |
138 | 65a6f9b7 | Michael Hanselmann | """Get instance properties.
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139 | 65a6f9b7 | Michael Hanselmann |
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140 | c41eea6e | Iustin Pop | @param instance_name: the instance name
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141 | c41eea6e | Iustin Pop |
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142 | c41eea6e | Iustin Pop | @return: tuple (name, id, memory, vcpus, stat, times)
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143 | 65a6f9b7 | Michael Hanselmann |
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144 | 65a6f9b7 | Michael Hanselmann | """
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145 | 65a6f9b7 | Michael Hanselmann | xm_list = self._GetXMList(instance_name=="Domain-0") |
146 | 65a6f9b7 | Michael Hanselmann | result = None
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147 | 65a6f9b7 | Michael Hanselmann | for data in xm_list: |
148 | 65a6f9b7 | Michael Hanselmann | if data[0] == instance_name: |
149 | 65a6f9b7 | Michael Hanselmann | result = data |
150 | 65a6f9b7 | Michael Hanselmann | break
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151 | 65a6f9b7 | Michael Hanselmann | return result
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152 | 65a6f9b7 | Michael Hanselmann | |
153 | 65a6f9b7 | Michael Hanselmann | def GetAllInstancesInfo(self): |
154 | 65a6f9b7 | Michael Hanselmann | """Get properties of all instances.
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155 | 65a6f9b7 | Michael Hanselmann |
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156 | c41eea6e | Iustin Pop | @return: list of tuples (name, id, memory, vcpus, stat, times)
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157 | c41eea6e | Iustin Pop |
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158 | 65a6f9b7 | Michael Hanselmann | """
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159 | 65a6f9b7 | Michael Hanselmann | xm_list = self._GetXMList(False) |
160 | 65a6f9b7 | Michael Hanselmann | return xm_list
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161 | 65a6f9b7 | Michael Hanselmann | |
162 | 65a6f9b7 | Michael Hanselmann | def StartInstance(self, instance, block_devices, extra_args): |
163 | c41eea6e | Iustin Pop | """Start an instance.
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164 | c41eea6e | Iustin Pop |
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165 | c41eea6e | Iustin Pop | """
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166 | 65a6f9b7 | Michael Hanselmann | self._WriteConfigFile(instance, block_devices, extra_args)
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167 | 65a6f9b7 | Michael Hanselmann | result = utils.RunCmd(["xm", "create", instance.name]) |
168 | 65a6f9b7 | Michael Hanselmann | |
169 | 65a6f9b7 | Michael Hanselmann | if result.failed:
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170 | 65a6f9b7 | Michael Hanselmann | raise errors.HypervisorError("Failed to start instance %s: %s (%s)" % |
171 | 65a6f9b7 | Michael Hanselmann | (instance.name, result.fail_reason, |
172 | 65a6f9b7 | Michael Hanselmann | result.output)) |
173 | 65a6f9b7 | Michael Hanselmann | |
174 | 65a6f9b7 | Michael Hanselmann | def StopInstance(self, instance, force=False): |
175 | c41eea6e | Iustin Pop | """Stop an instance.
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176 | c41eea6e | Iustin Pop |
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177 | c41eea6e | Iustin Pop | """
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178 | 53c776b5 | Iustin Pop | self._RemoveConfigFile(instance.name)
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179 | 65a6f9b7 | Michael Hanselmann | if force:
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180 | 65a6f9b7 | Michael Hanselmann | command = ["xm", "destroy", instance.name] |
181 | 65a6f9b7 | Michael Hanselmann | else:
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182 | 65a6f9b7 | Michael Hanselmann | command = ["xm", "shutdown", instance.name] |
183 | 65a6f9b7 | Michael Hanselmann | result = utils.RunCmd(command) |
184 | 65a6f9b7 | Michael Hanselmann | |
185 | 65a6f9b7 | Michael Hanselmann | if result.failed:
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186 | 65a6f9b7 | Michael Hanselmann | raise errors.HypervisorError("Failed to stop instance %s: %s" % |
187 | 65a6f9b7 | Michael Hanselmann | (instance.name, result.fail_reason)) |
188 | 65a6f9b7 | Michael Hanselmann | |
189 | 65a6f9b7 | Michael Hanselmann | def RebootInstance(self, instance): |
190 | c41eea6e | Iustin Pop | """Reboot an instance.
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191 | c41eea6e | Iustin Pop |
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192 | c41eea6e | Iustin Pop | """
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193 | 65a6f9b7 | Michael Hanselmann | result = utils.RunCmd(["xm", "reboot", instance.name]) |
194 | 65a6f9b7 | Michael Hanselmann | |
195 | 65a6f9b7 | Michael Hanselmann | if result.failed:
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196 | 65a6f9b7 | Michael Hanselmann | raise errors.HypervisorError("Failed to reboot instance %s: %s" % |
197 | 65a6f9b7 | Michael Hanselmann | (instance.name, result.fail_reason)) |
198 | 65a6f9b7 | Michael Hanselmann | |
199 | 65a6f9b7 | Michael Hanselmann | def GetNodeInfo(self): |
200 | 65a6f9b7 | Michael Hanselmann | """Return information about the node.
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201 | 65a6f9b7 | Michael Hanselmann |
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202 | c41eea6e | Iustin Pop | @return: a dict with the following keys (values in MiB):
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203 | c41eea6e | Iustin Pop | - memory_total: the total memory size on the node
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204 | c41eea6e | Iustin Pop | - memory_free: the available memory on the node for instances
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205 | c41eea6e | Iustin Pop | - memory_dom0: the memory used by the node itself, if available
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206 | 65a6f9b7 | Michael Hanselmann |
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207 | 65a6f9b7 | Michael Hanselmann | """
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208 | 65a6f9b7 | Michael Hanselmann | # note: in xen 3, memory has changed to total_memory
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209 | 65a6f9b7 | Michael Hanselmann | result = utils.RunCmd(["xm", "info"]) |
210 | 65a6f9b7 | Michael Hanselmann | if result.failed:
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211 | b48909c8 | Iustin Pop | logging.error("Can't run 'xm info' (%s): %s", result.fail_reason,
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212 | b48909c8 | Iustin Pop | result.output) |
213 | 65a6f9b7 | Michael Hanselmann | return None |
214 | 65a6f9b7 | Michael Hanselmann | |
215 | 65a6f9b7 | Michael Hanselmann | xmoutput = result.stdout.splitlines() |
216 | 65a6f9b7 | Michael Hanselmann | result = {} |
217 | 65a6f9b7 | Michael Hanselmann | for line in xmoutput: |
218 | 65a6f9b7 | Michael Hanselmann | splitfields = line.split(":", 1) |
219 | 65a6f9b7 | Michael Hanselmann | |
220 | 65a6f9b7 | Michael Hanselmann | if len(splitfields) > 1: |
221 | 65a6f9b7 | Michael Hanselmann | key = splitfields[0].strip()
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222 | 65a6f9b7 | Michael Hanselmann | val = splitfields[1].strip()
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223 | 65a6f9b7 | Michael Hanselmann | if key == 'memory' or key == 'total_memory': |
224 | 65a6f9b7 | Michael Hanselmann | result['memory_total'] = int(val) |
225 | 65a6f9b7 | Michael Hanselmann | elif key == 'free_memory': |
226 | 65a6f9b7 | Michael Hanselmann | result['memory_free'] = int(val) |
227 | e8a4c138 | Iustin Pop | elif key == 'nr_cpus': |
228 | e8a4c138 | Iustin Pop | result['cpu_total'] = int(val) |
229 | 65a6f9b7 | Michael Hanselmann | dom0_info = self.GetInstanceInfo("Domain-0") |
230 | 65a6f9b7 | Michael Hanselmann | if dom0_info is not None: |
231 | 65a6f9b7 | Michael Hanselmann | result['memory_dom0'] = dom0_info[2] |
232 | 65a6f9b7 | Michael Hanselmann | |
233 | 65a6f9b7 | Michael Hanselmann | return result
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234 | 65a6f9b7 | Michael Hanselmann | |
235 | 637ce7f9 | Guido Trotter | @classmethod
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236 | 637ce7f9 | Guido Trotter | def GetShellCommandForConsole(cls, instance): |
237 | 65a6f9b7 | Michael Hanselmann | """Return a command for connecting to the console of an instance.
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238 | 65a6f9b7 | Michael Hanselmann |
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239 | 65a6f9b7 | Michael Hanselmann | """
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240 | 04c4330c | Alexander Schreiber | return "xm console %s" % instance.name |
241 | 04c4330c | Alexander Schreiber | |
242 | 65a6f9b7 | Michael Hanselmann | |
243 | 65a6f9b7 | Michael Hanselmann | def Verify(self): |
244 | 65a6f9b7 | Michael Hanselmann | """Verify the hypervisor.
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245 | 65a6f9b7 | Michael Hanselmann |
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246 | 65a6f9b7 | Michael Hanselmann | For Xen, this verifies that the xend process is running.
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247 | 65a6f9b7 | Michael Hanselmann |
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248 | 65a6f9b7 | Michael Hanselmann | """
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249 | e3e66f02 | Michael Hanselmann | result = utils.RunCmd(["xm", "info"]) |
250 | e3e66f02 | Michael Hanselmann | if result.failed:
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251 | e3e66f02 | Michael Hanselmann | return "'xm info' failed: %s" % result.fail_reason |
252 | 65a6f9b7 | Michael Hanselmann | |
253 | 65a6f9b7 | Michael Hanselmann | @staticmethod
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254 | 65a6f9b7 | Michael Hanselmann | def _GetConfigFileDiskData(disk_template, block_devices): |
255 | 65a6f9b7 | Michael Hanselmann | """Get disk directive for xen config file.
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256 | 65a6f9b7 | Michael Hanselmann |
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257 | 65a6f9b7 | Michael Hanselmann | This method builds the xen config disk directive according to the
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258 | 65a6f9b7 | Michael Hanselmann | given disk_template and block_devices.
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259 | 65a6f9b7 | Michael Hanselmann |
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260 | c41eea6e | Iustin Pop | @param disk_template: string containing instance disk template
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261 | c41eea6e | Iustin Pop | @param block_devices: list of tuples (cfdev, rldev):
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262 | c41eea6e | Iustin Pop | - cfdev: dict containing ganeti config disk part
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263 | c41eea6e | Iustin Pop | - rldev: ganeti.bdev.BlockDev object
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264 | 65a6f9b7 | Michael Hanselmann |
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265 | c41eea6e | Iustin Pop | @return: string containing disk directive for xen instance config file
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266 | 65a6f9b7 | Michael Hanselmann |
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267 | 65a6f9b7 | Michael Hanselmann | """
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268 | 65a6f9b7 | Michael Hanselmann | FILE_DRIVER_MAP = { |
269 | 65a6f9b7 | Michael Hanselmann | constants.FD_LOOP: "file",
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270 | 65a6f9b7 | Michael Hanselmann | constants.FD_BLKTAP: "tap:aio",
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271 | 65a6f9b7 | Michael Hanselmann | } |
272 | 65a6f9b7 | Michael Hanselmann | disk_data = [] |
273 | 2864f2d9 | Iustin Pop | if len(block_devices) > 24: |
274 | 2864f2d9 | Iustin Pop | # 'z' - 'a' = 24
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275 | 2864f2d9 | Iustin Pop | raise errors.HypervisorError("Too many disks") |
276 | 2864f2d9 | Iustin Pop | # FIXME: instead of this hardcoding here, each of PVM/HVM should
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277 | 2864f2d9 | Iustin Pop | # directly export their info (currently HVM will just sed this info)
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278 | 2864f2d9 | Iustin Pop | namespace = ["sd" + chr(i + ord('a')) for i in range(24)] |
279 | 069cfbf1 | Iustin Pop | for sd_name, (cfdev, dev_path) in zip(namespace, block_devices): |
280 | 65a6f9b7 | Michael Hanselmann | if cfdev.dev_type == constants.LD_FILE:
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281 | 65a6f9b7 | Michael Hanselmann | line = "'%s:%s,%s,w'" % (FILE_DRIVER_MAP[cfdev.physical_id[0]], |
282 | 069cfbf1 | Iustin Pop | dev_path, sd_name) |
283 | 65a6f9b7 | Michael Hanselmann | else:
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284 | 069cfbf1 | Iustin Pop | line = "'phy:%s,%s,w'" % (dev_path, sd_name)
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285 | 65a6f9b7 | Michael Hanselmann | disk_data.append(line) |
286 | 65a6f9b7 | Michael Hanselmann | |
287 | 65a6f9b7 | Michael Hanselmann | return disk_data
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288 | 65a6f9b7 | Michael Hanselmann | |
289 | 4390ccff | Guido Trotter | def MigrationInfo(self, instance): |
290 | 4390ccff | Guido Trotter | """Get instance information to perform a migration.
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291 | 4390ccff | Guido Trotter |
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292 | 4390ccff | Guido Trotter | @type instance: L{objects.Instance}
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293 | 4390ccff | Guido Trotter | @param instance: instance to be migrated
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294 | 4390ccff | Guido Trotter | @rtype: string
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295 | 4390ccff | Guido Trotter | @return: content of the xen config file
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296 | 4390ccff | Guido Trotter |
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297 | 4390ccff | Guido Trotter | """
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298 | 4390ccff | Guido Trotter | return self._ReadConfigFile(instance.name) |
299 | 4390ccff | Guido Trotter | |
300 | 4390ccff | Guido Trotter | def AcceptInstance(self, instance, info, target): |
301 | 4390ccff | Guido Trotter | """Prepare to accept an instance.
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302 | 4390ccff | Guido Trotter |
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303 | 4390ccff | Guido Trotter | @type instance: L{objects.Instance}
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304 | 4390ccff | Guido Trotter | @param instance: instance to be accepted
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305 | 4390ccff | Guido Trotter | @type info: string
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306 | 4390ccff | Guido Trotter | @param info: content of the xen config file on the source node
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307 | 4390ccff | Guido Trotter | @type target: string
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308 | 4390ccff | Guido Trotter | @param target: target host (usually ip), on this node
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309 | 4390ccff | Guido Trotter |
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310 | 4390ccff | Guido Trotter | """
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311 | 4390ccff | Guido Trotter | pass
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312 | 4390ccff | Guido Trotter | |
313 | 4390ccff | Guido Trotter | def FinalizeMigration(self, instance, info, success): |
314 | 4390ccff | Guido Trotter | """Finalize an instance migration.
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315 | 4390ccff | Guido Trotter |
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316 | 4390ccff | Guido Trotter | After a successful migration we write the xen config file.
|
317 | 4390ccff | Guido Trotter | We do nothing on a failure, as we did not change anything at accept time.
|
318 | 4390ccff | Guido Trotter |
|
319 | 4390ccff | Guido Trotter | @type instance: L{objects.Instance}
|
320 | 4390ccff | Guido Trotter | @param instance: instance whose migration is being aborted
|
321 | 4390ccff | Guido Trotter | @type info: string
|
322 | 4390ccff | Guido Trotter | @param info: content of the xen config file on the source node
|
323 | 4390ccff | Guido Trotter | @type success: boolean
|
324 | 4390ccff | Guido Trotter | @param success: whether the migration was a success or a failure
|
325 | 4390ccff | Guido Trotter |
|
326 | 4390ccff | Guido Trotter | """
|
327 | 4390ccff | Guido Trotter | if success:
|
328 | 4390ccff | Guido Trotter | self._WriteConfigFileStatic(instance.name, info)
|
329 | 4390ccff | Guido Trotter | |
330 | 6e7275c0 | Iustin Pop | def MigrateInstance(self, instance, target, live): |
331 | 6e7275c0 | Iustin Pop | """Migrate an instance to a target node.
|
332 | 6e7275c0 | Iustin Pop |
|
333 | 6e7275c0 | Iustin Pop | The migration will not be attempted if the instance is not
|
334 | 6e7275c0 | Iustin Pop | currently running.
|
335 | 6e7275c0 | Iustin Pop |
|
336 | fdf7f055 | Guido Trotter | @type instance: string
|
337 | fdf7f055 | Guido Trotter | @param instance: instance name
|
338 | fdf7f055 | Guido Trotter | @type target: string
|
339 | fdf7f055 | Guido Trotter | @param target: ip address of the target node
|
340 | fdf7f055 | Guido Trotter | @type live: boolean
|
341 | fdf7f055 | Guido Trotter | @param live: perform a live migration
|
342 | fdf7f055 | Guido Trotter |
|
343 | 6e7275c0 | Iustin Pop | """
|
344 | 6e7275c0 | Iustin Pop | if self.GetInstanceInfo(instance) is None: |
345 | 6e7275c0 | Iustin Pop | raise errors.HypervisorError("Instance not running, cannot migrate") |
346 | 6e7275c0 | Iustin Pop | args = ["xm", "migrate"] |
347 | 6e7275c0 | Iustin Pop | if live:
|
348 | 6e7275c0 | Iustin Pop | args.append("-l")
|
349 | 6e7275c0 | Iustin Pop | args.extend([instance, target]) |
350 | 6e7275c0 | Iustin Pop | result = utils.RunCmd(args) |
351 | 6e7275c0 | Iustin Pop | if result.failed:
|
352 | 6e7275c0 | Iustin Pop | raise errors.HypervisorError("Failed to migrate instance %s: %s" % |
353 | 6e7275c0 | Iustin Pop | (instance, result.output)) |
354 | 53c776b5 | Iustin Pop | # remove old xen file after migration succeeded
|
355 | 53c776b5 | Iustin Pop | try:
|
356 | 53c776b5 | Iustin Pop | self._RemoveConfigFile(instance)
|
357 | c979d253 | Iustin Pop | except EnvironmentError: |
358 | c979d253 | Iustin Pop | logging.exception("Failure while removing instance config file")
|
359 | 6e7275c0 | Iustin Pop | |
360 | 65a6f9b7 | Michael Hanselmann | |
361 | 65a6f9b7 | Michael Hanselmann | class XenPvmHypervisor(XenHypervisor): |
362 | 65a6f9b7 | Michael Hanselmann | """Xen PVM hypervisor interface"""
|
363 | 65a6f9b7 | Michael Hanselmann | |
364 | f48148c3 | Iustin Pop | PARAMETERS = [ |
365 | f48148c3 | Iustin Pop | constants.HV_KERNEL_PATH, |
366 | f48148c3 | Iustin Pop | constants.HV_INITRD_PATH, |
367 | 074ca009 | Guido Trotter | constants.HV_ROOT_PATH, |
368 | f48148c3 | Iustin Pop | ] |
369 | f48148c3 | Iustin Pop | |
370 | f48148c3 | Iustin Pop | @classmethod
|
371 | f48148c3 | Iustin Pop | def CheckParameterSyntax(cls, hvparams): |
372 | f48148c3 | Iustin Pop | """Check the given parameters for validity.
|
373 | f48148c3 | Iustin Pop |
|
374 | f48148c3 | Iustin Pop | For the PVM hypervisor, this only check the existence of the
|
375 | f48148c3 | Iustin Pop | kernel.
|
376 | f48148c3 | Iustin Pop |
|
377 | f48148c3 | Iustin Pop | @type hvparams: dict
|
378 | f48148c3 | Iustin Pop | @param hvparams: dictionary with parameter names/value
|
379 | f48148c3 | Iustin Pop | @raise errors.HypervisorError: when a parameter is not valid
|
380 | f48148c3 | Iustin Pop |
|
381 | f48148c3 | Iustin Pop | """
|
382 | f48148c3 | Iustin Pop | super(XenPvmHypervisor, cls).CheckParameterSyntax(hvparams)
|
383 | f48148c3 | Iustin Pop | |
384 | f48148c3 | Iustin Pop | if not hvparams[constants.HV_KERNEL_PATH]: |
385 | f48148c3 | Iustin Pop | raise errors.HypervisorError("Need a kernel for the instance") |
386 | f48148c3 | Iustin Pop | |
387 | f48148c3 | Iustin Pop | if not os.path.isabs(hvparams[constants.HV_KERNEL_PATH]): |
388 | 50cb2e2a | Guido Trotter | raise errors.HypervisorError("The kernel path must be an absolute path") |
389 | f48148c3 | Iustin Pop | |
390 | 074ca009 | Guido Trotter | if not hvparams[constants.HV_ROOT_PATH]: |
391 | 074ca009 | Guido Trotter | raise errors.HypervisorError("Need a root partition for the instance") |
392 | 074ca009 | Guido Trotter | |
393 | f48148c3 | Iustin Pop | if hvparams[constants.HV_INITRD_PATH]:
|
394 | f48148c3 | Iustin Pop | if not os.path.isabs(hvparams[constants.HV_INITRD_PATH]): |
395 | 50cb2e2a | Guido Trotter | raise errors.HypervisorError("The initrd path must be an absolute path" |
396 | f48148c3 | Iustin Pop | ", if defined")
|
397 | f48148c3 | Iustin Pop | |
398 | f48148c3 | Iustin Pop | def ValidateParameters(self, hvparams): |
399 | f48148c3 | Iustin Pop | """Check the given parameters for validity.
|
400 | f48148c3 | Iustin Pop |
|
401 | f48148c3 | Iustin Pop | For the PVM hypervisor, this only check the existence of the
|
402 | f48148c3 | Iustin Pop | kernel.
|
403 | f48148c3 | Iustin Pop |
|
404 | f48148c3 | Iustin Pop | """
|
405 | f48148c3 | Iustin Pop | super(XenPvmHypervisor, self).ValidateParameters(hvparams) |
406 | f48148c3 | Iustin Pop | |
407 | f48148c3 | Iustin Pop | kernel_path = hvparams[constants.HV_KERNEL_PATH] |
408 | f48148c3 | Iustin Pop | if not os.path.isfile(kernel_path): |
409 | f48148c3 | Iustin Pop | raise errors.HypervisorError("Instance kernel '%s' not found or" |
410 | f48148c3 | Iustin Pop | " not a file" % kernel_path)
|
411 | f48148c3 | Iustin Pop | initrd_path = hvparams[constants.HV_INITRD_PATH] |
412 | f48148c3 | Iustin Pop | if initrd_path and not os.path.isfile(initrd_path): |
413 | f48148c3 | Iustin Pop | raise errors.HypervisorError("Instance initrd '%s' not found or" |
414 | f48148c3 | Iustin Pop | " not a file" % initrd_path)
|
415 | f48148c3 | Iustin Pop | |
416 | 65a6f9b7 | Michael Hanselmann | @classmethod
|
417 | 65a6f9b7 | Michael Hanselmann | def _WriteConfigFile(cls, instance, block_devices, extra_args): |
418 | 65a6f9b7 | Michael Hanselmann | """Write the Xen config file for the instance.
|
419 | 65a6f9b7 | Michael Hanselmann |
|
420 | 65a6f9b7 | Michael Hanselmann | """
|
421 | 65a6f9b7 | Michael Hanselmann | config = StringIO() |
422 | 65a6f9b7 | Michael Hanselmann | config.write("# this is autogenerated by Ganeti, please do not edit\n#\n")
|
423 | 65a6f9b7 | Michael Hanselmann | |
424 | 65a6f9b7 | Michael Hanselmann | # kernel handling
|
425 | f48148c3 | Iustin Pop | kpath = instance.hvparams[constants.HV_KERNEL_PATH] |
426 | 65a6f9b7 | Michael Hanselmann | config.write("kernel = '%s'\n" % kpath)
|
427 | 65a6f9b7 | Michael Hanselmann | |
428 | 65a6f9b7 | Michael Hanselmann | # initrd handling
|
429 | f48148c3 | Iustin Pop | initrd_path = instance.hvparams[constants.HV_INITRD_PATH] |
430 | 65a6f9b7 | Michael Hanselmann | if initrd_path:
|
431 | 65a6f9b7 | Michael Hanselmann | config.write("ramdisk = '%s'\n" % initrd_path)
|
432 | 65a6f9b7 | Michael Hanselmann | |
433 | 65a6f9b7 | Michael Hanselmann | # rest of the settings
|
434 | 8b3fd458 | Iustin Pop | config.write("memory = %d\n" % instance.beparams[constants.BE_MEMORY])
|
435 | 8b3fd458 | Iustin Pop | config.write("vcpus = %d\n" % instance.beparams[constants.BE_VCPUS])
|
436 | 65a6f9b7 | Michael Hanselmann | config.write("name = '%s'\n" % instance.name)
|
437 | 65a6f9b7 | Michael Hanselmann | |
438 | 65a6f9b7 | Michael Hanselmann | vif_data = [] |
439 | 65a6f9b7 | Michael Hanselmann | for nic in instance.nics: |
440 | 65a6f9b7 | Michael Hanselmann | nic_str = "mac=%s, bridge=%s" % (nic.mac, nic.bridge)
|
441 | 65a6f9b7 | Michael Hanselmann | ip = getattr(nic, "ip", None) |
442 | 65a6f9b7 | Michael Hanselmann | if ip is not None: |
443 | 65a6f9b7 | Michael Hanselmann | nic_str += ", ip=%s" % ip
|
444 | 65a6f9b7 | Michael Hanselmann | vif_data.append("'%s'" % nic_str)
|
445 | 65a6f9b7 | Michael Hanselmann | |
446 | 65a6f9b7 | Michael Hanselmann | config.write("vif = [%s]\n" % ",".join(vif_data)) |
447 | 65a6f9b7 | Michael Hanselmann | config.write("disk = [%s]\n" % ",".join( |
448 | 65a6f9b7 | Michael Hanselmann | cls._GetConfigFileDiskData(instance.disk_template, |
449 | 65a6f9b7 | Michael Hanselmann | block_devices))) |
450 | 074ca009 | Guido Trotter | |
451 | 074ca009 | Guido Trotter | rpath = instance.hvparams[constants.HV_ROOT_PATH] |
452 | 074ca009 | Guido Trotter | config.write("root = '%s ro'\n" % rpath)
|
453 | 65a6f9b7 | Michael Hanselmann | config.write("on_poweroff = 'destroy'\n")
|
454 | 65a6f9b7 | Michael Hanselmann | config.write("on_reboot = 'restart'\n")
|
455 | 65a6f9b7 | Michael Hanselmann | config.write("on_crash = 'restart'\n")
|
456 | 65a6f9b7 | Michael Hanselmann | if extra_args:
|
457 | 65a6f9b7 | Michael Hanselmann | config.write("extra = '%s'\n" % extra_args)
|
458 | 65a6f9b7 | Michael Hanselmann | # just in case it exists
|
459 | 65a6f9b7 | Michael Hanselmann | utils.RemoveFile("/etc/xen/auto/%s" % instance.name)
|
460 | 65a6f9b7 | Michael Hanselmann | try:
|
461 | 73cd67f4 | Guido Trotter | utils.WriteFile("/etc/xen/%s" % instance.name,
|
462 | 73cd67f4 | Guido Trotter | data=config.getvalue()) |
463 | 73cd67f4 | Guido Trotter | except EnvironmentError, err: |
464 | 73cd67f4 | Guido Trotter | raise errors.HypervisorError("Cannot write Xen instance confile" |
465 | 73cd67f4 | Guido Trotter | " file /etc/xen/%s: %s" %
|
466 | 73cd67f4 | Guido Trotter | (instance.name, err)) |
467 | 73cd67f4 | Guido Trotter | |
468 | 65a6f9b7 | Michael Hanselmann | return True |
469 | 65a6f9b7 | Michael Hanselmann | |
470 | 65a6f9b7 | Michael Hanselmann | |
471 | 65a6f9b7 | Michael Hanselmann | class XenHvmHypervisor(XenHypervisor): |
472 | 65a6f9b7 | Michael Hanselmann | """Xen HVM hypervisor interface"""
|
473 | 65a6f9b7 | Michael Hanselmann | |
474 | f48148c3 | Iustin Pop | PARAMETERS = [ |
475 | f48148c3 | Iustin Pop | constants.HV_ACPI, |
476 | f48148c3 | Iustin Pop | constants.HV_BOOT_ORDER, |
477 | f48148c3 | Iustin Pop | constants.HV_CDROM_IMAGE_PATH, |
478 | f48148c3 | Iustin Pop | constants.HV_DISK_TYPE, |
479 | f48148c3 | Iustin Pop | constants.HV_NIC_TYPE, |
480 | f48148c3 | Iustin Pop | constants.HV_PAE, |
481 | f48148c3 | Iustin Pop | constants.HV_VNC_BIND_ADDRESS, |
482 | f48148c3 | Iustin Pop | ] |
483 | f48148c3 | Iustin Pop | |
484 | f48148c3 | Iustin Pop | @classmethod
|
485 | f48148c3 | Iustin Pop | def CheckParameterSyntax(cls, hvparams): |
486 | f48148c3 | Iustin Pop | """Check the given parameter syntax.
|
487 | f48148c3 | Iustin Pop |
|
488 | f48148c3 | Iustin Pop | """
|
489 | f48148c3 | Iustin Pop | super(XenHvmHypervisor, cls).CheckParameterSyntax(hvparams)
|
490 | f48148c3 | Iustin Pop | # boot order verification
|
491 | f48148c3 | Iustin Pop | boot_order = hvparams[constants.HV_BOOT_ORDER] |
492 | f48148c3 | Iustin Pop | if len(boot_order.strip("acdn")) != 0: |
493 | f48148c3 | Iustin Pop | raise errors.HypervisorError("Invalid boot order '%s' specified," |
494 | f48148c3 | Iustin Pop | " must be one or more of [acdn]" %
|
495 | f48148c3 | Iustin Pop | boot_order) |
496 | f48148c3 | Iustin Pop | # device type checks
|
497 | f48148c3 | Iustin Pop | nic_type = hvparams[constants.HV_NIC_TYPE] |
498 | f48148c3 | Iustin Pop | if nic_type not in constants.HT_HVM_VALID_NIC_TYPES: |
499 | f48148c3 | Iustin Pop | raise errors.HypervisorError("Invalid NIC type %s specified for Xen HVM" |
500 | f48148c3 | Iustin Pop | " hypervisor" % nic_type)
|
501 | f48148c3 | Iustin Pop | disk_type = hvparams[constants.HV_DISK_TYPE] |
502 | f48148c3 | Iustin Pop | if disk_type not in constants.HT_HVM_VALID_DISK_TYPES: |
503 | f48148c3 | Iustin Pop | raise errors.HypervisorError("Invalid disk type %s specified for Xen HVM" |
504 | f48148c3 | Iustin Pop | " hypervisor" % disk_type)
|
505 | f48148c3 | Iustin Pop | # vnc_bind_address verification
|
506 | f48148c3 | Iustin Pop | vnc_bind_address = hvparams[constants.HV_VNC_BIND_ADDRESS] |
507 | f48148c3 | Iustin Pop | if vnc_bind_address is not None: |
508 | f48148c3 | Iustin Pop | if not utils.IsValidIP(vnc_bind_address): |
509 | f48148c3 | Iustin Pop | raise errors.OpPrereqError("given VNC bind address '%s' doesn't look" |
510 | f48148c3 | Iustin Pop | " like a valid IP address" %
|
511 | f48148c3 | Iustin Pop | vnc_bind_address) |
512 | f48148c3 | Iustin Pop | |
513 | f48148c3 | Iustin Pop | iso_path = hvparams[constants.HV_CDROM_IMAGE_PATH] |
514 | f48148c3 | Iustin Pop | if iso_path and not os.path.isabs(iso_path): |
515 | 5661b908 | Iustin Pop | raise errors.HypervisorError("The path to the HVM CDROM image must" |
516 | 5661b908 | Iustin Pop | " be an absolute path or None, not %s" %
|
517 | 5661b908 | Iustin Pop | iso_path) |
518 | f48148c3 | Iustin Pop | |
519 | f48148c3 | Iustin Pop | def ValidateParameters(self, hvparams): |
520 | f48148c3 | Iustin Pop | """Check the given parameters for validity.
|
521 | f48148c3 | Iustin Pop |
|
522 | f48148c3 | Iustin Pop | For the PVM hypervisor, this only check the existence of the
|
523 | f48148c3 | Iustin Pop | kernel.
|
524 | f48148c3 | Iustin Pop |
|
525 | f48148c3 | Iustin Pop | @type hvparams: dict
|
526 | f48148c3 | Iustin Pop | @param hvparams: dictionary with parameter names/value
|
527 | f48148c3 | Iustin Pop | @raise errors.HypervisorError: when a parameter is not valid
|
528 | f48148c3 | Iustin Pop |
|
529 | f48148c3 | Iustin Pop | """
|
530 | f48148c3 | Iustin Pop | super(XenHvmHypervisor, self).ValidateParameters(hvparams) |
531 | f48148c3 | Iustin Pop | |
532 | f48148c3 | Iustin Pop | # hvm_cdrom_image_path verification
|
533 | f48148c3 | Iustin Pop | iso_path = hvparams[constants.HV_CDROM_IMAGE_PATH] |
534 | f48148c3 | Iustin Pop | if iso_path and not os.path.isfile(iso_path): |
535 | e09fdcfa | Iustin Pop | raise errors.HypervisorError("The HVM CDROM image must either be a" |
536 | e09fdcfa | Iustin Pop | " regular file or a symlink pointing to"
|
537 | e09fdcfa | Iustin Pop | " an existing regular file, not %s" %
|
538 | e09fdcfa | Iustin Pop | iso_path) |
539 | f48148c3 | Iustin Pop | |
540 | 65a6f9b7 | Michael Hanselmann | @classmethod
|
541 | 65a6f9b7 | Michael Hanselmann | def _WriteConfigFile(cls, instance, block_devices, extra_args): |
542 | 65a6f9b7 | Michael Hanselmann | """Create a Xen 3.1 HVM config file.
|
543 | 65a6f9b7 | Michael Hanselmann |
|
544 | 65a6f9b7 | Michael Hanselmann | """
|
545 | 65a6f9b7 | Michael Hanselmann | config = StringIO() |
546 | 65a6f9b7 | Michael Hanselmann | config.write("# this is autogenerated by Ganeti, please do not edit\n#\n")
|
547 | 65a6f9b7 | Michael Hanselmann | config.write("kernel = '/usr/lib/xen/boot/hvmloader'\n")
|
548 | 65a6f9b7 | Michael Hanselmann | config.write("builder = 'hvm'\n")
|
549 | 8b3fd458 | Iustin Pop | config.write("memory = %d\n" % instance.beparams[constants.BE_MEMORY])
|
550 | 8b3fd458 | Iustin Pop | config.write("vcpus = %d\n" % instance.beparams[constants.BE_VCPUS])
|
551 | 65a6f9b7 | Michael Hanselmann | config.write("name = '%s'\n" % instance.name)
|
552 | f48148c3 | Iustin Pop | if instance.hvparams[constants.HV_PAE]:
|
553 | a21dda8b | Iustin Pop | config.write("pae = 1\n")
|
554 | a21dda8b | Iustin Pop | else:
|
555 | a21dda8b | Iustin Pop | config.write("pae = 0\n")
|
556 | f48148c3 | Iustin Pop | if instance.hvparams[constants.HV_ACPI]:
|
557 | a21dda8b | Iustin Pop | config.write("acpi = 1\n")
|
558 | a21dda8b | Iustin Pop | else:
|
559 | a21dda8b | Iustin Pop | config.write("acpi = 0\n")
|
560 | 65a6f9b7 | Michael Hanselmann | config.write("apic = 1\n")
|
561 | 65a6f9b7 | Michael Hanselmann | arch = os.uname()[4]
|
562 | 65a6f9b7 | Michael Hanselmann | if '64' in arch: |
563 | 65a6f9b7 | Michael Hanselmann | config.write("device_model = '/usr/lib64/xen/bin/qemu-dm'\n")
|
564 | 65a6f9b7 | Michael Hanselmann | else:
|
565 | 65a6f9b7 | Michael Hanselmann | config.write("device_model = '/usr/lib/xen/bin/qemu-dm'\n")
|
566 | f48148c3 | Iustin Pop | if instance.hvparams[constants.HV_BOOT_ORDER] is None: |
567 | 65a6f9b7 | Michael Hanselmann | config.write("boot = '%s'\n" % constants.HT_HVM_DEFAULT_BOOT_ORDER)
|
568 | 65a6f9b7 | Michael Hanselmann | else:
|
569 | f48148c3 | Iustin Pop | config.write("boot = '%s'\n" % instance.hvparams["boot_order"]) |
570 | 65a6f9b7 | Michael Hanselmann | config.write("sdl = 0\n")
|
571 | 97efde45 | Guido Trotter | config.write("usb = 1\n")
|
572 | 97efde45 | Guido Trotter | config.write("usbdevice = 'tablet'\n")
|
573 | 65a6f9b7 | Michael Hanselmann | config.write("vnc = 1\n")
|
574 | f48148c3 | Iustin Pop | if instance.hvparams[constants.HV_VNC_BIND_ADDRESS] is None: |
575 | d0c11cf7 | Alexander Schreiber | config.write("vnclisten = '%s'\n" % constants.VNC_DEFAULT_BIND_ADDRESS)
|
576 | d0c11cf7 | Alexander Schreiber | else:
|
577 | f48148c3 | Iustin Pop | config.write("vnclisten = '%s'\n" %
|
578 | f48148c3 | Iustin Pop | instance.hvparams["vnc_bind_address"])
|
579 | 65a6f9b7 | Michael Hanselmann | |
580 | 65a6f9b7 | Michael Hanselmann | if instance.network_port > constants.HT_HVM_VNC_BASE_PORT:
|
581 | 65a6f9b7 | Michael Hanselmann | display = instance.network_port - constants.HT_HVM_VNC_BASE_PORT |
582 | 65a6f9b7 | Michael Hanselmann | config.write("vncdisplay = %s\n" % display)
|
583 | 65a6f9b7 | Michael Hanselmann | config.write("vncunused = 0\n")
|
584 | 65a6f9b7 | Michael Hanselmann | else:
|
585 | 65a6f9b7 | Michael Hanselmann | config.write("# vncdisplay = 1\n")
|
586 | 65a6f9b7 | Michael Hanselmann | config.write("vncunused = 1\n")
|
587 | 65a6f9b7 | Michael Hanselmann | |
588 | 65a6f9b7 | Michael Hanselmann | try:
|
589 | 78f66a17 | Guido Trotter | password = utils.ReadFile(constants.VNC_PASSWORD_FILE) |
590 | 78f66a17 | Guido Trotter | except EnvironmentError, err: |
591 | 78f66a17 | Guido Trotter | raise errors.HypervisorError("Failed to open VNC password file %s: %s" % |
592 | 78f66a17 | Guido Trotter | (constants.VNC_PASSWORD_FILE, err)) |
593 | 65a6f9b7 | Michael Hanselmann | |
594 | 65a6f9b7 | Michael Hanselmann | config.write("vncpasswd = '%s'\n" % password.rstrip())
|
595 | 65a6f9b7 | Michael Hanselmann | |
596 | 65a6f9b7 | Michael Hanselmann | config.write("serial = 'pty'\n")
|
597 | 65a6f9b7 | Michael Hanselmann | config.write("localtime = 1\n")
|
598 | 65a6f9b7 | Michael Hanselmann | |
599 | 65a6f9b7 | Michael Hanselmann | vif_data = [] |
600 | f48148c3 | Iustin Pop | nic_type = instance.hvparams[constants.HV_NIC_TYPE] |
601 | f48148c3 | Iustin Pop | if nic_type is None: |
602 | f48148c3 | Iustin Pop | # ensure old instances don't change
|
603 | f48148c3 | Iustin Pop | nic_type_str = ", type=ioemu"
|
604 | f48148c3 | Iustin Pop | elif nic_type == constants.HT_HVM_DEV_PARAVIRTUAL:
|
605 | f48148c3 | Iustin Pop | nic_type_str = ", type=paravirtualized"
|
606 | f48148c3 | Iustin Pop | else:
|
607 | f48148c3 | Iustin Pop | nic_type_str = ", model=%s, type=ioemu" % nic_type
|
608 | 65a6f9b7 | Michael Hanselmann | for nic in instance.nics: |
609 | f48148c3 | Iustin Pop | nic_str = "mac=%s, bridge=%s%s" % (nic.mac, nic.bridge, nic_type_str)
|
610 | 65a6f9b7 | Michael Hanselmann | ip = getattr(nic, "ip", None) |
611 | 65a6f9b7 | Michael Hanselmann | if ip is not None: |
612 | 65a6f9b7 | Michael Hanselmann | nic_str += ", ip=%s" % ip
|
613 | 65a6f9b7 | Michael Hanselmann | vif_data.append("'%s'" % nic_str)
|
614 | 65a6f9b7 | Michael Hanselmann | |
615 | 65a6f9b7 | Michael Hanselmann | config.write("vif = [%s]\n" % ",".join(vif_data)) |
616 | a21dda8b | Iustin Pop | disk_data = cls._GetConfigFileDiskData(instance.disk_template, |
617 | a21dda8b | Iustin Pop | block_devices) |
618 | f48148c3 | Iustin Pop | disk_type = instance.hvparams[constants.HV_DISK_TYPE] |
619 | f48148c3 | Iustin Pop | if disk_type in (None, constants.HT_HVM_DEV_IOEMU): |
620 | 5397e0b7 | Alexander Schreiber | replacement = ",ioemu:hd"
|
621 | 5397e0b7 | Alexander Schreiber | else:
|
622 | 5397e0b7 | Alexander Schreiber | replacement = ",hd"
|
623 | 5397e0b7 | Alexander Schreiber | disk_data = [line.replace(",sd", replacement) for line in disk_data] |
624 | f48148c3 | Iustin Pop | iso_path = instance.hvparams[constants.HV_CDROM_IMAGE_PATH] |
625 | f48148c3 | Iustin Pop | if iso_path:
|
626 | f48148c3 | Iustin Pop | iso = "'file:%s,hdc:cdrom,r'" % iso_path
|
627 | a21dda8b | Iustin Pop | disk_data.append(iso) |
628 | a21dda8b | Iustin Pop | |
629 | a21dda8b | Iustin Pop | config.write("disk = [%s]\n" % (",".join(disk_data))) |
630 | a21dda8b | Iustin Pop | |
631 | 65a6f9b7 | Michael Hanselmann | config.write("on_poweroff = 'destroy'\n")
|
632 | 65a6f9b7 | Michael Hanselmann | config.write("on_reboot = 'restart'\n")
|
633 | 65a6f9b7 | Michael Hanselmann | config.write("on_crash = 'restart'\n")
|
634 | 65a6f9b7 | Michael Hanselmann | if extra_args:
|
635 | 65a6f9b7 | Michael Hanselmann | config.write("extra = '%s'\n" % extra_args)
|
636 | 65a6f9b7 | Michael Hanselmann | # just in case it exists
|
637 | 65a6f9b7 | Michael Hanselmann | utils.RemoveFile("/etc/xen/auto/%s" % instance.name)
|
638 | 65a6f9b7 | Michael Hanselmann | try:
|
639 | 73cd67f4 | Guido Trotter | utils.WriteFile("/etc/xen/%s" % instance.name,
|
640 | 73cd67f4 | Guido Trotter | data=config.getvalue()) |
641 | 73cd67f4 | Guido Trotter | except EnvironmentError, err: |
642 | 73cd67f4 | Guido Trotter | raise errors.HypervisorError("Cannot write Xen instance confile" |
643 | 73cd67f4 | Guido Trotter | " file /etc/xen/%s: %s" %
|
644 | 73cd67f4 | Guido Trotter | (instance.name, err)) |
645 | 73cd67f4 | Guido Trotter | |
646 | 65a6f9b7 | Michael Hanselmann | return True |