root / lib / hypervisor / hv_xen.py @ e2ee1cea
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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 | 7dd106d3 | Iustin Pop | REBOOT_RETRY_COUNT = 60
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46 | 7dd106d3 | Iustin Pop | REBOOT_RETRY_INTERVAL = 10
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47 | 65a6f9b7 | Michael Hanselmann | |
48 | 5661b908 | Iustin Pop | @classmethod
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49 | 07813a9e | Iustin Pop | def _WriteConfigFile(cls, instance, block_devices): |
50 | 65a6f9b7 | Michael Hanselmann | """Write the Xen config file for the instance.
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51 | 65a6f9b7 | Michael Hanselmann |
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52 | 65a6f9b7 | Michael Hanselmann | """
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53 | 65a6f9b7 | Michael Hanselmann | raise NotImplementedError |
54 | 65a6f9b7 | Michael Hanselmann | |
55 | 65a6f9b7 | Michael Hanselmann | @staticmethod
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56 | 4390ccff | Guido Trotter | def _WriteConfigFileStatic(instance_name, data): |
57 | 4390ccff | Guido Trotter | """Write the Xen config file for the instance.
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58 | 4390ccff | Guido Trotter |
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59 | 4390ccff | Guido Trotter | This version of the function just writes the config file from static data.
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60 | 4390ccff | Guido Trotter |
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61 | 4390ccff | Guido Trotter | """
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62 | 4390ccff | Guido Trotter | utils.WriteFile("/etc/xen/%s" % instance_name, data=data)
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63 | 4390ccff | Guido Trotter | |
64 | 4390ccff | Guido Trotter | @staticmethod
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65 | 4390ccff | Guido Trotter | def _ReadConfigFile(instance_name): |
66 | 4390ccff | Guido Trotter | """Returns the contents of the instance config file.
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67 | 4390ccff | Guido Trotter |
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68 | 4390ccff | Guido Trotter | """
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69 | 4390ccff | Guido Trotter | try:
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70 | 4390ccff | Guido Trotter | file_content = utils.ReadFile("/etc/xen/%s" % instance_name)
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71 | 4390ccff | Guido Trotter | except EnvironmentError, err: |
72 | 4390ccff | Guido Trotter | raise errors.HypervisorError("Failed to load Xen config file: %s" % err) |
73 | 4390ccff | Guido Trotter | return file_content
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74 | 4390ccff | Guido Trotter | |
75 | 4390ccff | Guido Trotter | @staticmethod
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76 | 53c776b5 | Iustin Pop | def _RemoveConfigFile(instance_name): |
77 | 65a6f9b7 | Michael Hanselmann | """Remove the xen configuration file.
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78 | 65a6f9b7 | Michael Hanselmann |
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79 | 65a6f9b7 | Michael Hanselmann | """
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80 | 53c776b5 | Iustin Pop | utils.RemoveFile("/etc/xen/%s" % instance_name)
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81 | 65a6f9b7 | Michael Hanselmann | |
82 | 65a6f9b7 | Michael Hanselmann | @staticmethod
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83 | 65a6f9b7 | Michael Hanselmann | def _GetXMList(include_node): |
84 | 65a6f9b7 | Michael Hanselmann | """Return the list of running instances.
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85 | 65a6f9b7 | Michael Hanselmann |
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86 | c41eea6e | Iustin Pop | If the include_node argument is True, then we return information
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87 | 65a6f9b7 | Michael Hanselmann | for dom0 also, otherwise we filter that from the return value.
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88 | 65a6f9b7 | Michael Hanselmann |
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89 | c41eea6e | Iustin Pop | @return: list of (name, id, memory, vcpus, state, time spent)
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90 | 65a6f9b7 | Michael Hanselmann |
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91 | 65a6f9b7 | Michael Hanselmann | """
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92 | 65a6f9b7 | Michael Hanselmann | for dummy in range(5): |
93 | 65a6f9b7 | Michael Hanselmann | result = utils.RunCmd(["xm", "list"]) |
94 | 65a6f9b7 | Michael Hanselmann | if not result.failed: |
95 | 65a6f9b7 | Michael Hanselmann | break
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96 | b48909c8 | Iustin Pop | logging.error("xm list failed (%s): %s", result.fail_reason,
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97 | b48909c8 | Iustin Pop | result.output) |
98 | 65a6f9b7 | Michael Hanselmann | time.sleep(1)
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99 | 65a6f9b7 | Michael Hanselmann | |
100 | 65a6f9b7 | Michael Hanselmann | if result.failed:
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101 | 65a6f9b7 | Michael Hanselmann | raise errors.HypervisorError("xm list failed, retries" |
102 | 65a6f9b7 | Michael Hanselmann | " exceeded (%s): %s" %
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103 | 3213d3c8 | Iustin Pop | (result.fail_reason, result.output)) |
104 | 65a6f9b7 | Michael Hanselmann | |
105 | 65a6f9b7 | Michael Hanselmann | # skip over the heading
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106 | 65a6f9b7 | Michael Hanselmann | lines = result.stdout.splitlines()[1:]
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107 | 65a6f9b7 | Michael Hanselmann | result = [] |
108 | 65a6f9b7 | Michael Hanselmann | for line in lines: |
109 | 65a6f9b7 | Michael Hanselmann | # The format of lines is:
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110 | 65a6f9b7 | Michael Hanselmann | # Name ID Mem(MiB) VCPUs State Time(s)
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111 | 65a6f9b7 | Michael Hanselmann | # Domain-0 0 3418 4 r----- 266.2
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112 | 65a6f9b7 | Michael Hanselmann | data = line.split() |
113 | 65a6f9b7 | Michael Hanselmann | if len(data) != 6: |
114 | 65a6f9b7 | Michael Hanselmann | raise errors.HypervisorError("Can't parse output of xm list," |
115 | 65a6f9b7 | Michael Hanselmann | " line: %s" % line)
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116 | 65a6f9b7 | Michael Hanselmann | try:
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117 | 65a6f9b7 | Michael Hanselmann | data[1] = int(data[1]) |
118 | 65a6f9b7 | Michael Hanselmann | data[2] = int(data[2]) |
119 | 65a6f9b7 | Michael Hanselmann | data[3] = int(data[3]) |
120 | 65a6f9b7 | Michael Hanselmann | data[5] = float(data[5]) |
121 | 65a6f9b7 | Michael Hanselmann | except ValueError, err: |
122 | 65a6f9b7 | Michael Hanselmann | raise errors.HypervisorError("Can't parse output of xm list," |
123 | 65a6f9b7 | Michael Hanselmann | " line: %s, error: %s" % (line, err))
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124 | 65a6f9b7 | Michael Hanselmann | |
125 | 65a6f9b7 | Michael Hanselmann | # skip the Domain-0 (optional)
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126 | 65a6f9b7 | Michael Hanselmann | if include_node or data[0] != 'Domain-0': |
127 | 65a6f9b7 | Michael Hanselmann | result.append(data) |
128 | 65a6f9b7 | Michael Hanselmann | |
129 | 65a6f9b7 | Michael Hanselmann | return result
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130 | 65a6f9b7 | Michael Hanselmann | |
131 | 65a6f9b7 | Michael Hanselmann | def ListInstances(self): |
132 | 65a6f9b7 | Michael Hanselmann | """Get the list of running instances.
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133 | 65a6f9b7 | Michael Hanselmann |
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134 | 65a6f9b7 | Michael Hanselmann | """
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135 | 65a6f9b7 | Michael Hanselmann | xm_list = self._GetXMList(False) |
136 | 65a6f9b7 | Michael Hanselmann | names = [info[0] for info in xm_list] |
137 | 65a6f9b7 | Michael Hanselmann | return names
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138 | 65a6f9b7 | Michael Hanselmann | |
139 | 65a6f9b7 | Michael Hanselmann | def GetInstanceInfo(self, instance_name): |
140 | 65a6f9b7 | Michael Hanselmann | """Get instance properties.
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141 | 65a6f9b7 | Michael Hanselmann |
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142 | c41eea6e | Iustin Pop | @param instance_name: the instance name
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143 | c41eea6e | Iustin Pop |
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144 | c41eea6e | Iustin Pop | @return: tuple (name, id, memory, vcpus, stat, times)
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145 | 65a6f9b7 | Michael Hanselmann |
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146 | 65a6f9b7 | Michael Hanselmann | """
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147 | 65a6f9b7 | Michael Hanselmann | xm_list = self._GetXMList(instance_name=="Domain-0") |
148 | 65a6f9b7 | Michael Hanselmann | result = None
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149 | 65a6f9b7 | Michael Hanselmann | for data in xm_list: |
150 | 65a6f9b7 | Michael Hanselmann | if data[0] == instance_name: |
151 | 65a6f9b7 | Michael Hanselmann | result = data |
152 | 65a6f9b7 | Michael Hanselmann | break
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153 | 65a6f9b7 | Michael Hanselmann | return result
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154 | 65a6f9b7 | Michael Hanselmann | |
155 | 65a6f9b7 | Michael Hanselmann | def GetAllInstancesInfo(self): |
156 | 65a6f9b7 | Michael Hanselmann | """Get properties of all instances.
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157 | 65a6f9b7 | Michael Hanselmann |
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158 | c41eea6e | Iustin Pop | @return: list of tuples (name, id, memory, vcpus, stat, times)
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159 | c41eea6e | Iustin Pop |
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160 | 65a6f9b7 | Michael Hanselmann | """
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161 | 65a6f9b7 | Michael Hanselmann | xm_list = self._GetXMList(False) |
162 | 65a6f9b7 | Michael Hanselmann | return xm_list
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163 | 65a6f9b7 | Michael Hanselmann | |
164 | 07813a9e | Iustin Pop | def StartInstance(self, instance, block_devices): |
165 | c41eea6e | Iustin Pop | """Start an instance.
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166 | c41eea6e | Iustin Pop |
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167 | c41eea6e | Iustin Pop | """
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168 | 07813a9e | Iustin Pop | self._WriteConfigFile(instance, block_devices)
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169 | 65a6f9b7 | Michael Hanselmann | result = utils.RunCmd(["xm", "create", instance.name]) |
170 | 65a6f9b7 | Michael Hanselmann | |
171 | 65a6f9b7 | Michael Hanselmann | if result.failed:
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172 | 65a6f9b7 | Michael Hanselmann | raise errors.HypervisorError("Failed to start instance %s: %s (%s)" % |
173 | 65a6f9b7 | Michael Hanselmann | (instance.name, result.fail_reason, |
174 | 65a6f9b7 | Michael Hanselmann | result.output)) |
175 | 65a6f9b7 | Michael Hanselmann | |
176 | 65a6f9b7 | Michael Hanselmann | def StopInstance(self, instance, force=False): |
177 | c41eea6e | Iustin Pop | """Stop an instance.
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178 | c41eea6e | Iustin Pop |
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179 | c41eea6e | Iustin Pop | """
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180 | 53c776b5 | Iustin Pop | self._RemoveConfigFile(instance.name)
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181 | 65a6f9b7 | Michael Hanselmann | if force:
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182 | 65a6f9b7 | Michael Hanselmann | command = ["xm", "destroy", instance.name] |
183 | 65a6f9b7 | Michael Hanselmann | else:
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184 | 65a6f9b7 | Michael Hanselmann | command = ["xm", "shutdown", instance.name] |
185 | 65a6f9b7 | Michael Hanselmann | result = utils.RunCmd(command) |
186 | 65a6f9b7 | Michael Hanselmann | |
187 | 65a6f9b7 | Michael Hanselmann | if result.failed:
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188 | 3213d3c8 | Iustin Pop | raise errors.HypervisorError("Failed to stop instance %s: %s, %s" % |
189 | 3213d3c8 | Iustin Pop | (instance.name, result.fail_reason, |
190 | 3213d3c8 | Iustin Pop | result.output)) |
191 | 65a6f9b7 | Michael Hanselmann | |
192 | 65a6f9b7 | Michael Hanselmann | def RebootInstance(self, instance): |
193 | c41eea6e | Iustin Pop | """Reboot an instance.
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194 | c41eea6e | Iustin Pop |
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195 | c41eea6e | Iustin Pop | """
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196 | 7dd106d3 | Iustin Pop | ini_info = self.GetInstanceInfo(instance.name)
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197 | 65a6f9b7 | Michael Hanselmann | result = utils.RunCmd(["xm", "reboot", instance.name]) |
198 | 65a6f9b7 | Michael Hanselmann | |
199 | 65a6f9b7 | Michael Hanselmann | if result.failed:
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200 | 3213d3c8 | Iustin Pop | raise errors.HypervisorError("Failed to reboot instance %s: %s, %s" % |
201 | 3213d3c8 | Iustin Pop | (instance.name, result.fail_reason, |
202 | 3213d3c8 | Iustin Pop | result.output)) |
203 | 7dd106d3 | Iustin Pop | done = False
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204 | 7dd106d3 | Iustin Pop | retries = self.REBOOT_RETRY_COUNT
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205 | 7dd106d3 | Iustin Pop | while retries > 0: |
206 | 7dd106d3 | Iustin Pop | new_info = self.GetInstanceInfo(instance.name)
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207 | 7dd106d3 | Iustin Pop | # check if the domain ID has changed or the run time has
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208 | 7dd106d3 | Iustin Pop | # decreased
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209 | 7dd106d3 | Iustin Pop | if new_info[1] != ini_info[1] or new_info[5] < ini_info[5]: |
210 | 7dd106d3 | Iustin Pop | done = True
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211 | 7dd106d3 | Iustin Pop | break
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212 | 7dd106d3 | Iustin Pop | time.sleep(self.REBOOT_RETRY_INTERVAL)
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213 | 7dd106d3 | Iustin Pop | retries -= 1
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214 | 7dd106d3 | Iustin Pop | |
215 | 7dd106d3 | Iustin Pop | if not done: |
216 | 7dd106d3 | Iustin Pop | raise errors.HypervisorError("Failed to reboot instance %s: instance" |
217 | 7dd106d3 | Iustin Pop | " did not reboot in the expected interval" %
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218 | 7dd106d3 | Iustin Pop | (instance.name, )) |
219 | 65a6f9b7 | Michael Hanselmann | |
220 | 65a6f9b7 | Michael Hanselmann | def GetNodeInfo(self): |
221 | 65a6f9b7 | Michael Hanselmann | """Return information about the node.
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222 | 65a6f9b7 | Michael Hanselmann |
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223 | 0105bad3 | Iustin Pop | @return: a dict with the following keys (memory values in MiB):
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224 | c41eea6e | Iustin Pop | - memory_total: the total memory size on the node
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225 | c41eea6e | Iustin Pop | - memory_free: the available memory on the node for instances
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226 | c41eea6e | Iustin Pop | - memory_dom0: the memory used by the node itself, if available
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227 | 0105bad3 | Iustin Pop | - nr_cpus: total number of CPUs
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228 | 0105bad3 | Iustin Pop | - nr_nodes: in a NUMA system, the number of domains
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229 | 0105bad3 | Iustin Pop | - nr_sockets: the number of physical CPU sockets in the node
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230 | 65a6f9b7 | Michael Hanselmann |
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231 | 65a6f9b7 | Michael Hanselmann | """
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232 | 65a6f9b7 | Michael Hanselmann | # note: in xen 3, memory has changed to total_memory
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233 | 65a6f9b7 | Michael Hanselmann | result = utils.RunCmd(["xm", "info"]) |
234 | 65a6f9b7 | Michael Hanselmann | if result.failed:
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235 | b48909c8 | Iustin Pop | logging.error("Can't run 'xm info' (%s): %s", result.fail_reason,
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236 | b48909c8 | Iustin Pop | result.output) |
237 | 65a6f9b7 | Michael Hanselmann | return None |
238 | 65a6f9b7 | Michael Hanselmann | |
239 | 65a6f9b7 | Michael Hanselmann | xmoutput = result.stdout.splitlines() |
240 | 65a6f9b7 | Michael Hanselmann | result = {} |
241 | 0105bad3 | Iustin Pop | cores_per_socket = threads_per_core = nr_cpus = None
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242 | 65a6f9b7 | Michael Hanselmann | for line in xmoutput: |
243 | 65a6f9b7 | Michael Hanselmann | splitfields = line.split(":", 1) |
244 | 65a6f9b7 | Michael Hanselmann | |
245 | 65a6f9b7 | Michael Hanselmann | if len(splitfields) > 1: |
246 | 65a6f9b7 | Michael Hanselmann | key = splitfields[0].strip()
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247 | 65a6f9b7 | Michael Hanselmann | val = splitfields[1].strip()
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248 | 65a6f9b7 | Michael Hanselmann | if key == 'memory' or key == 'total_memory': |
249 | 65a6f9b7 | Michael Hanselmann | result['memory_total'] = int(val) |
250 | 65a6f9b7 | Michael Hanselmann | elif key == 'free_memory': |
251 | 65a6f9b7 | Michael Hanselmann | result['memory_free'] = int(val) |
252 | e8a4c138 | Iustin Pop | elif key == 'nr_cpus': |
253 | 0105bad3 | Iustin Pop | nr_cpus = result['cpu_total'] = int(val) |
254 | 0105bad3 | Iustin Pop | elif key == 'nr_nodes': |
255 | 0105bad3 | Iustin Pop | result['cpu_nodes'] = int(val) |
256 | 0105bad3 | Iustin Pop | elif key == 'cores_per_socket': |
257 | 0105bad3 | Iustin Pop | cores_per_socket = int(val)
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258 | 0105bad3 | Iustin Pop | elif key == 'threads_per_core': |
259 | 0105bad3 | Iustin Pop | threads_per_core = int(val)
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260 | 0105bad3 | Iustin Pop | |
261 | 0105bad3 | Iustin Pop | if (cores_per_socket is not None and |
262 | 0105bad3 | Iustin Pop | threads_per_core is not None and nr_cpus is not None): |
263 | 0105bad3 | Iustin Pop | result['cpu_sockets'] = nr_cpus / (cores_per_socket * threads_per_core)
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264 | 0105bad3 | Iustin Pop | |
265 | 65a6f9b7 | Michael Hanselmann | dom0_info = self.GetInstanceInfo("Domain-0") |
266 | 65a6f9b7 | Michael Hanselmann | if dom0_info is not None: |
267 | 65a6f9b7 | Michael Hanselmann | result['memory_dom0'] = dom0_info[2] |
268 | 65a6f9b7 | Michael Hanselmann | |
269 | 65a6f9b7 | Michael Hanselmann | return result
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270 | 65a6f9b7 | Michael Hanselmann | |
271 | 637ce7f9 | Guido Trotter | @classmethod
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272 | 5431b2e4 | Guido Trotter | def GetShellCommandForConsole(cls, instance, hvparams, beparams): |
273 | 65a6f9b7 | Michael Hanselmann | """Return a command for connecting to the console of an instance.
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274 | 65a6f9b7 | Michael Hanselmann |
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275 | 65a6f9b7 | Michael Hanselmann | """
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276 | 04c4330c | Alexander Schreiber | return "xm console %s" % instance.name |
277 | 04c4330c | Alexander Schreiber | |
278 | 65a6f9b7 | Michael Hanselmann | |
279 | 65a6f9b7 | Michael Hanselmann | def Verify(self): |
280 | 65a6f9b7 | Michael Hanselmann | """Verify the hypervisor.
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281 | 65a6f9b7 | Michael Hanselmann |
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282 | 65a6f9b7 | Michael Hanselmann | For Xen, this verifies that the xend process is running.
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283 | 65a6f9b7 | Michael Hanselmann |
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284 | 65a6f9b7 | Michael Hanselmann | """
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285 | e3e66f02 | Michael Hanselmann | result = utils.RunCmd(["xm", "info"]) |
286 | e3e66f02 | Michael Hanselmann | if result.failed:
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287 | 3213d3c8 | Iustin Pop | return "'xm info' failed: %s, %s" % (result.fail_reason, result.output) |
288 | 65a6f9b7 | Michael Hanselmann | |
289 | 65a6f9b7 | Michael Hanselmann | @staticmethod
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290 | 65a6f9b7 | Michael Hanselmann | def _GetConfigFileDiskData(disk_template, block_devices): |
291 | 65a6f9b7 | Michael Hanselmann | """Get disk directive for xen config file.
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292 | 65a6f9b7 | Michael Hanselmann |
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293 | 65a6f9b7 | Michael Hanselmann | This method builds the xen config disk directive according to the
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294 | 65a6f9b7 | Michael Hanselmann | given disk_template and block_devices.
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295 | 65a6f9b7 | Michael Hanselmann |
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296 | c41eea6e | Iustin Pop | @param disk_template: string containing instance disk template
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297 | c41eea6e | Iustin Pop | @param block_devices: list of tuples (cfdev, rldev):
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298 | c41eea6e | Iustin Pop | - cfdev: dict containing ganeti config disk part
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299 | c41eea6e | Iustin Pop | - rldev: ganeti.bdev.BlockDev object
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300 | 65a6f9b7 | Michael Hanselmann |
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301 | c41eea6e | Iustin Pop | @return: string containing disk directive for xen instance config file
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302 | 65a6f9b7 | Michael Hanselmann |
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303 | 65a6f9b7 | Michael Hanselmann | """
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304 | 65a6f9b7 | Michael Hanselmann | FILE_DRIVER_MAP = { |
305 | 65a6f9b7 | Michael Hanselmann | constants.FD_LOOP: "file",
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306 | 65a6f9b7 | Michael Hanselmann | constants.FD_BLKTAP: "tap:aio",
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307 | 65a6f9b7 | Michael Hanselmann | } |
308 | 65a6f9b7 | Michael Hanselmann | disk_data = [] |
309 | 2864f2d9 | Iustin Pop | if len(block_devices) > 24: |
310 | 2864f2d9 | Iustin Pop | # 'z' - 'a' = 24
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311 | 2864f2d9 | Iustin Pop | raise errors.HypervisorError("Too many disks") |
312 | 2864f2d9 | Iustin Pop | # FIXME: instead of this hardcoding here, each of PVM/HVM should
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313 | 2864f2d9 | Iustin Pop | # directly export their info (currently HVM will just sed this info)
|
314 | 2864f2d9 | Iustin Pop | namespace = ["sd" + chr(i + ord('a')) for i in range(24)] |
315 | 069cfbf1 | Iustin Pop | for sd_name, (cfdev, dev_path) in zip(namespace, block_devices): |
316 | d34b16d7 | Iustin Pop | if cfdev.mode == constants.DISK_RDWR:
|
317 | d34b16d7 | Iustin Pop | mode = "w"
|
318 | d34b16d7 | Iustin Pop | else:
|
319 | d34b16d7 | Iustin Pop | mode = "r"
|
320 | 65a6f9b7 | Michael Hanselmann | if cfdev.dev_type == constants.LD_FILE:
|
321 | d34b16d7 | Iustin Pop | line = "'%s:%s,%s,%s'" % (FILE_DRIVER_MAP[cfdev.physical_id[0]], |
322 | d34b16d7 | Iustin Pop | dev_path, sd_name, mode) |
323 | 65a6f9b7 | Michael Hanselmann | else:
|
324 | d34b16d7 | Iustin Pop | line = "'phy:%s,%s,%s'" % (dev_path, sd_name, mode)
|
325 | 65a6f9b7 | Michael Hanselmann | disk_data.append(line) |
326 | 65a6f9b7 | Michael Hanselmann | |
327 | 65a6f9b7 | Michael Hanselmann | return disk_data
|
328 | 65a6f9b7 | Michael Hanselmann | |
329 | 4390ccff | Guido Trotter | def MigrationInfo(self, instance): |
330 | 4390ccff | Guido Trotter | """Get instance information to perform a migration.
|
331 | 4390ccff | Guido Trotter |
|
332 | 4390ccff | Guido Trotter | @type instance: L{objects.Instance}
|
333 | 4390ccff | Guido Trotter | @param instance: instance to be migrated
|
334 | 4390ccff | Guido Trotter | @rtype: string
|
335 | 4390ccff | Guido Trotter | @return: content of the xen config file
|
336 | 4390ccff | Guido Trotter |
|
337 | 4390ccff | Guido Trotter | """
|
338 | 4390ccff | Guido Trotter | return self._ReadConfigFile(instance.name) |
339 | 4390ccff | Guido Trotter | |
340 | 4390ccff | Guido Trotter | def AcceptInstance(self, instance, info, target): |
341 | 4390ccff | Guido Trotter | """Prepare to accept an instance.
|
342 | 4390ccff | Guido Trotter |
|
343 | 4390ccff | Guido Trotter | @type instance: L{objects.Instance}
|
344 | 4390ccff | Guido Trotter | @param instance: instance to be accepted
|
345 | 4390ccff | Guido Trotter | @type info: string
|
346 | 4390ccff | Guido Trotter | @param info: content of the xen config file on the source node
|
347 | 4390ccff | Guido Trotter | @type target: string
|
348 | 4390ccff | Guido Trotter | @param target: target host (usually ip), on this node
|
349 | 4390ccff | Guido Trotter |
|
350 | 4390ccff | Guido Trotter | """
|
351 | 4390ccff | Guido Trotter | pass
|
352 | 4390ccff | Guido Trotter | |
353 | 4390ccff | Guido Trotter | def FinalizeMigration(self, instance, info, success): |
354 | 4390ccff | Guido Trotter | """Finalize an instance migration.
|
355 | 4390ccff | Guido Trotter |
|
356 | 4390ccff | Guido Trotter | After a successful migration we write the xen config file.
|
357 | 4390ccff | Guido Trotter | We do nothing on a failure, as we did not change anything at accept time.
|
358 | 4390ccff | Guido Trotter |
|
359 | 4390ccff | Guido Trotter | @type instance: L{objects.Instance}
|
360 | 4390ccff | Guido Trotter | @param instance: instance whose migration is being aborted
|
361 | 4390ccff | Guido Trotter | @type info: string
|
362 | 4390ccff | Guido Trotter | @param info: content of the xen config file on the source node
|
363 | 4390ccff | Guido Trotter | @type success: boolean
|
364 | 4390ccff | Guido Trotter | @param success: whether the migration was a success or a failure
|
365 | 4390ccff | Guido Trotter |
|
366 | 4390ccff | Guido Trotter | """
|
367 | 4390ccff | Guido Trotter | if success:
|
368 | 4390ccff | Guido Trotter | self._WriteConfigFileStatic(instance.name, info)
|
369 | 4390ccff | Guido Trotter | |
370 | 6e7275c0 | Iustin Pop | def MigrateInstance(self, instance, target, live): |
371 | 6e7275c0 | Iustin Pop | """Migrate an instance to a target node.
|
372 | 6e7275c0 | Iustin Pop |
|
373 | 6e7275c0 | Iustin Pop | The migration will not be attempted if the instance is not
|
374 | 6e7275c0 | Iustin Pop | currently running.
|
375 | 6e7275c0 | Iustin Pop |
|
376 | fdf7f055 | Guido Trotter | @type instance: string
|
377 | fdf7f055 | Guido Trotter | @param instance: instance name
|
378 | fdf7f055 | Guido Trotter | @type target: string
|
379 | fdf7f055 | Guido Trotter | @param target: ip address of the target node
|
380 | fdf7f055 | Guido Trotter | @type live: boolean
|
381 | fdf7f055 | Guido Trotter | @param live: perform a live migration
|
382 | fdf7f055 | Guido Trotter |
|
383 | 6e7275c0 | Iustin Pop | """
|
384 | 6e7275c0 | Iustin Pop | if self.GetInstanceInfo(instance) is None: |
385 | 6e7275c0 | Iustin Pop | raise errors.HypervisorError("Instance not running, cannot migrate") |
386 | 6e7275c0 | Iustin Pop | args = ["xm", "migrate"] |
387 | 6e7275c0 | Iustin Pop | if live:
|
388 | 6e7275c0 | Iustin Pop | args.append("-l")
|
389 | 6e7275c0 | Iustin Pop | args.extend([instance, target]) |
390 | 6e7275c0 | Iustin Pop | result = utils.RunCmd(args) |
391 | 6e7275c0 | Iustin Pop | if result.failed:
|
392 | 6e7275c0 | Iustin Pop | raise errors.HypervisorError("Failed to migrate instance %s: %s" % |
393 | 6e7275c0 | Iustin Pop | (instance, result.output)) |
394 | 53c776b5 | Iustin Pop | # remove old xen file after migration succeeded
|
395 | 53c776b5 | Iustin Pop | try:
|
396 | 53c776b5 | Iustin Pop | self._RemoveConfigFile(instance)
|
397 | c979d253 | Iustin Pop | except EnvironmentError: |
398 | c979d253 | Iustin Pop | logging.exception("Failure while removing instance config file")
|
399 | 6e7275c0 | Iustin Pop | |
400 | 65a6f9b7 | Michael Hanselmann | |
401 | 65a6f9b7 | Michael Hanselmann | class XenPvmHypervisor(XenHypervisor): |
402 | 65a6f9b7 | Michael Hanselmann | """Xen PVM hypervisor interface"""
|
403 | 65a6f9b7 | Michael Hanselmann | |
404 | f48148c3 | Iustin Pop | PARAMETERS = [ |
405 | f48148c3 | Iustin Pop | constants.HV_KERNEL_PATH, |
406 | f48148c3 | Iustin Pop | constants.HV_INITRD_PATH, |
407 | 074ca009 | Guido Trotter | constants.HV_ROOT_PATH, |
408 | 07813a9e | Iustin Pop | constants.HV_KERNEL_ARGS, |
409 | f48148c3 | Iustin Pop | ] |
410 | f48148c3 | Iustin Pop | |
411 | f48148c3 | Iustin Pop | @classmethod
|
412 | f48148c3 | Iustin Pop | def CheckParameterSyntax(cls, hvparams): |
413 | f48148c3 | Iustin Pop | """Check the given parameters for validity.
|
414 | f48148c3 | Iustin Pop |
|
415 | f48148c3 | Iustin Pop | For the PVM hypervisor, this only check the existence of the
|
416 | f48148c3 | Iustin Pop | kernel.
|
417 | f48148c3 | Iustin Pop |
|
418 | f48148c3 | Iustin Pop | @type hvparams: dict
|
419 | f48148c3 | Iustin Pop | @param hvparams: dictionary with parameter names/value
|
420 | f48148c3 | Iustin Pop | @raise errors.HypervisorError: when a parameter is not valid
|
421 | f48148c3 | Iustin Pop |
|
422 | f48148c3 | Iustin Pop | """
|
423 | f48148c3 | Iustin Pop | super(XenPvmHypervisor, cls).CheckParameterSyntax(hvparams)
|
424 | f48148c3 | Iustin Pop | |
425 | f48148c3 | Iustin Pop | if not hvparams[constants.HV_KERNEL_PATH]: |
426 | f48148c3 | Iustin Pop | raise errors.HypervisorError("Need a kernel for the instance") |
427 | f48148c3 | Iustin Pop | |
428 | f48148c3 | Iustin Pop | if not os.path.isabs(hvparams[constants.HV_KERNEL_PATH]): |
429 | 50cb2e2a | Guido Trotter | raise errors.HypervisorError("The kernel path must be an absolute path") |
430 | f48148c3 | Iustin Pop | |
431 | 074ca009 | Guido Trotter | if not hvparams[constants.HV_ROOT_PATH]: |
432 | 074ca009 | Guido Trotter | raise errors.HypervisorError("Need a root partition for the instance") |
433 | 074ca009 | Guido Trotter | |
434 | f48148c3 | Iustin Pop | if hvparams[constants.HV_INITRD_PATH]:
|
435 | f48148c3 | Iustin Pop | if not os.path.isabs(hvparams[constants.HV_INITRD_PATH]): |
436 | 50cb2e2a | Guido Trotter | raise errors.HypervisorError("The initrd path must be an absolute path" |
437 | f48148c3 | Iustin Pop | ", if defined")
|
438 | f48148c3 | Iustin Pop | |
439 | f48148c3 | Iustin Pop | def ValidateParameters(self, hvparams): |
440 | f48148c3 | Iustin Pop | """Check the given parameters for validity.
|
441 | f48148c3 | Iustin Pop |
|
442 | f48148c3 | Iustin Pop | For the PVM hypervisor, this only check the existence of the
|
443 | f48148c3 | Iustin Pop | kernel.
|
444 | f48148c3 | Iustin Pop |
|
445 | f48148c3 | Iustin Pop | """
|
446 | f48148c3 | Iustin Pop | super(XenPvmHypervisor, self).ValidateParameters(hvparams) |
447 | f48148c3 | Iustin Pop | |
448 | f48148c3 | Iustin Pop | kernel_path = hvparams[constants.HV_KERNEL_PATH] |
449 | f48148c3 | Iustin Pop | if not os.path.isfile(kernel_path): |
450 | f48148c3 | Iustin Pop | raise errors.HypervisorError("Instance kernel '%s' not found or" |
451 | f48148c3 | Iustin Pop | " not a file" % kernel_path)
|
452 | f48148c3 | Iustin Pop | initrd_path = hvparams[constants.HV_INITRD_PATH] |
453 | f48148c3 | Iustin Pop | if initrd_path and not os.path.isfile(initrd_path): |
454 | f48148c3 | Iustin Pop | raise errors.HypervisorError("Instance initrd '%s' not found or" |
455 | f48148c3 | Iustin Pop | " not a file" % initrd_path)
|
456 | f48148c3 | Iustin Pop | |
457 | 65a6f9b7 | Michael Hanselmann | @classmethod
|
458 | 07813a9e | Iustin Pop | def _WriteConfigFile(cls, instance, block_devices): |
459 | 65a6f9b7 | Michael Hanselmann | """Write the Xen config file for the instance.
|
460 | 65a6f9b7 | Michael Hanselmann |
|
461 | 65a6f9b7 | Michael Hanselmann | """
|
462 | a985b417 | Iustin Pop | hvp = instance.hvparams |
463 | 65a6f9b7 | Michael Hanselmann | config = StringIO() |
464 | 65a6f9b7 | Michael Hanselmann | config.write("# this is autogenerated by Ganeti, please do not edit\n#\n")
|
465 | 65a6f9b7 | Michael Hanselmann | |
466 | 65a6f9b7 | Michael Hanselmann | # kernel handling
|
467 | a985b417 | Iustin Pop | kpath = hvp[constants.HV_KERNEL_PATH] |
468 | 65a6f9b7 | Michael Hanselmann | config.write("kernel = '%s'\n" % kpath)
|
469 | 65a6f9b7 | Michael Hanselmann | |
470 | 65a6f9b7 | Michael Hanselmann | # initrd handling
|
471 | a985b417 | Iustin Pop | initrd_path = hvp[constants.HV_INITRD_PATH] |
472 | 65a6f9b7 | Michael Hanselmann | if initrd_path:
|
473 | 65a6f9b7 | Michael Hanselmann | config.write("ramdisk = '%s'\n" % initrd_path)
|
474 | 65a6f9b7 | Michael Hanselmann | |
475 | 65a6f9b7 | Michael Hanselmann | # rest of the settings
|
476 | 8b3fd458 | Iustin Pop | config.write("memory = %d\n" % instance.beparams[constants.BE_MEMORY])
|
477 | 8b3fd458 | Iustin Pop | config.write("vcpus = %d\n" % instance.beparams[constants.BE_VCPUS])
|
478 | 65a6f9b7 | Michael Hanselmann | config.write("name = '%s'\n" % instance.name)
|
479 | 65a6f9b7 | Michael Hanselmann | |
480 | 65a6f9b7 | Michael Hanselmann | vif_data = [] |
481 | 65a6f9b7 | Michael Hanselmann | for nic in instance.nics: |
482 | 65a6f9b7 | Michael Hanselmann | nic_str = "mac=%s, bridge=%s" % (nic.mac, nic.bridge)
|
483 | 65a6f9b7 | Michael Hanselmann | ip = getattr(nic, "ip", None) |
484 | 65a6f9b7 | Michael Hanselmann | if ip is not None: |
485 | 65a6f9b7 | Michael Hanselmann | nic_str += ", ip=%s" % ip
|
486 | 65a6f9b7 | Michael Hanselmann | vif_data.append("'%s'" % nic_str)
|
487 | 65a6f9b7 | Michael Hanselmann | |
488 | 65a6f9b7 | Michael Hanselmann | config.write("vif = [%s]\n" % ",".join(vif_data)) |
489 | 65a6f9b7 | Michael Hanselmann | config.write("disk = [%s]\n" % ",".join( |
490 | 65a6f9b7 | Michael Hanselmann | cls._GetConfigFileDiskData(instance.disk_template, |
491 | 65a6f9b7 | Michael Hanselmann | block_devices))) |
492 | 074ca009 | Guido Trotter | |
493 | 07813a9e | Iustin Pop | config.write("root = '%s'\n" % hvp[constants.HV_ROOT_PATH])
|
494 | 65a6f9b7 | Michael Hanselmann | config.write("on_poweroff = 'destroy'\n")
|
495 | 65a6f9b7 | Michael Hanselmann | config.write("on_reboot = 'restart'\n")
|
496 | 65a6f9b7 | Michael Hanselmann | config.write("on_crash = 'restart'\n")
|
497 | 07813a9e | Iustin Pop | config.write("extra = '%s'\n" % hvp[constants.HV_KERNEL_ARGS])
|
498 | 65a6f9b7 | Michael Hanselmann | # just in case it exists
|
499 | 65a6f9b7 | Michael Hanselmann | utils.RemoveFile("/etc/xen/auto/%s" % instance.name)
|
500 | 65a6f9b7 | Michael Hanselmann | try:
|
501 | a985b417 | Iustin Pop | utils.WriteFile("/etc/xen/%s" % instance.name, data=config.getvalue())
|
502 | 73cd67f4 | Guido Trotter | except EnvironmentError, err: |
503 | 73cd67f4 | Guido Trotter | raise errors.HypervisorError("Cannot write Xen instance confile" |
504 | 73cd67f4 | Guido Trotter | " file /etc/xen/%s: %s" %
|
505 | 73cd67f4 | Guido Trotter | (instance.name, err)) |
506 | 73cd67f4 | Guido Trotter | |
507 | 65a6f9b7 | Michael Hanselmann | return True |
508 | 65a6f9b7 | Michael Hanselmann | |
509 | 65a6f9b7 | Michael Hanselmann | |
510 | 65a6f9b7 | Michael Hanselmann | class XenHvmHypervisor(XenHypervisor): |
511 | 65a6f9b7 | Michael Hanselmann | """Xen HVM hypervisor interface"""
|
512 | 65a6f9b7 | Michael Hanselmann | |
513 | f48148c3 | Iustin Pop | PARAMETERS = [ |
514 | f48148c3 | Iustin Pop | constants.HV_ACPI, |
515 | f48148c3 | Iustin Pop | constants.HV_BOOT_ORDER, |
516 | f48148c3 | Iustin Pop | constants.HV_CDROM_IMAGE_PATH, |
517 | f48148c3 | Iustin Pop | constants.HV_DISK_TYPE, |
518 | f48148c3 | Iustin Pop | constants.HV_NIC_TYPE, |
519 | f48148c3 | Iustin Pop | constants.HV_PAE, |
520 | f48148c3 | Iustin Pop | constants.HV_VNC_BIND_ADDRESS, |
521 | e2ee1cea | Iustin Pop | constants.HV_KERNEL_PATH, |
522 | f48148c3 | Iustin Pop | ] |
523 | f48148c3 | Iustin Pop | |
524 | f48148c3 | Iustin Pop | @classmethod
|
525 | f48148c3 | Iustin Pop | def CheckParameterSyntax(cls, hvparams): |
526 | f48148c3 | Iustin Pop | """Check the given parameter syntax.
|
527 | f48148c3 | Iustin Pop |
|
528 | f48148c3 | Iustin Pop | """
|
529 | f48148c3 | Iustin Pop | super(XenHvmHypervisor, cls).CheckParameterSyntax(hvparams)
|
530 | f48148c3 | Iustin Pop | # boot order verification
|
531 | f48148c3 | Iustin Pop | boot_order = hvparams[constants.HV_BOOT_ORDER] |
532 | 30948aa6 | Guido Trotter | if not boot_order or len(boot_order.strip("acdn")) != 0: |
533 | f48148c3 | Iustin Pop | raise errors.HypervisorError("Invalid boot order '%s' specified," |
534 | f48148c3 | Iustin Pop | " must be one or more of [acdn]" %
|
535 | f48148c3 | Iustin Pop | boot_order) |
536 | f48148c3 | Iustin Pop | # device type checks
|
537 | f48148c3 | Iustin Pop | nic_type = hvparams[constants.HV_NIC_TYPE] |
538 | f48148c3 | Iustin Pop | if nic_type not in constants.HT_HVM_VALID_NIC_TYPES: |
539 | 5155ede7 | Guido Trotter | raise errors.HypervisorError("Invalid NIC type %s specified for the Xen" |
540 | 5155ede7 | Guido Trotter | " HVM hypervisor. Please choose one of: %s"
|
541 | 5155ede7 | Guido Trotter | % (nic_type, |
542 | 5155ede7 | Guido Trotter | constants.HT_HVM_VALID_NIC_TYPES)) |
543 | f48148c3 | Iustin Pop | disk_type = hvparams[constants.HV_DISK_TYPE] |
544 | f48148c3 | Iustin Pop | if disk_type not in constants.HT_HVM_VALID_DISK_TYPES: |
545 | 5155ede7 | Guido Trotter | raise errors.HypervisorError("Invalid disk type %s specified for the Xen" |
546 | 5155ede7 | Guido Trotter | " HVM hypervisor. Please choose one of: %s"
|
547 | 5155ede7 | Guido Trotter | % (disk_type, |
548 | 5155ede7 | Guido Trotter | constants.HT_HVM_VALID_DISK_TYPES)) |
549 | f48148c3 | Iustin Pop | # vnc_bind_address verification
|
550 | f48148c3 | Iustin Pop | vnc_bind_address = hvparams[constants.HV_VNC_BIND_ADDRESS] |
551 | 5b460366 | Iustin Pop | if vnc_bind_address:
|
552 | f48148c3 | Iustin Pop | if not utils.IsValidIP(vnc_bind_address): |
553 | f48148c3 | Iustin Pop | raise errors.OpPrereqError("given VNC bind address '%s' doesn't look" |
554 | f48148c3 | Iustin Pop | " like a valid IP address" %
|
555 | f48148c3 | Iustin Pop | vnc_bind_address) |
556 | f48148c3 | Iustin Pop | |
557 | f48148c3 | Iustin Pop | iso_path = hvparams[constants.HV_CDROM_IMAGE_PATH] |
558 | f48148c3 | Iustin Pop | if iso_path and not os.path.isabs(iso_path): |
559 | 5661b908 | Iustin Pop | raise errors.HypervisorError("The path to the HVM CDROM image must" |
560 | 5661b908 | Iustin Pop | " be an absolute path or None, not %s" %
|
561 | 5661b908 | Iustin Pop | iso_path) |
562 | f48148c3 | Iustin Pop | |
563 | e2ee1cea | Iustin Pop | if not hvparams[constants.HV_KERNEL_PATH]: |
564 | e2ee1cea | Iustin Pop | raise errors.HypervisorError("Need a kernel for the instance") |
565 | e2ee1cea | Iustin Pop | |
566 | e2ee1cea | Iustin Pop | if not os.path.isabs(hvparams[constants.HV_KERNEL_PATH]): |
567 | e2ee1cea | Iustin Pop | raise errors.HypervisorError("The kernel path must be an absolute path") |
568 | e2ee1cea | Iustin Pop | |
569 | f48148c3 | Iustin Pop | def ValidateParameters(self, hvparams): |
570 | f48148c3 | Iustin Pop | """Check the given parameters for validity.
|
571 | f48148c3 | Iustin Pop |
|
572 | f48148c3 | Iustin Pop | For the PVM hypervisor, this only check the existence of the
|
573 | f48148c3 | Iustin Pop | kernel.
|
574 | f48148c3 | Iustin Pop |
|
575 | f48148c3 | Iustin Pop | @type hvparams: dict
|
576 | f48148c3 | Iustin Pop | @param hvparams: dictionary with parameter names/value
|
577 | f48148c3 | Iustin Pop | @raise errors.HypervisorError: when a parameter is not valid
|
578 | f48148c3 | Iustin Pop |
|
579 | f48148c3 | Iustin Pop | """
|
580 | f48148c3 | Iustin Pop | super(XenHvmHypervisor, self).ValidateParameters(hvparams) |
581 | f48148c3 | Iustin Pop | |
582 | f48148c3 | Iustin Pop | # hvm_cdrom_image_path verification
|
583 | f48148c3 | Iustin Pop | iso_path = hvparams[constants.HV_CDROM_IMAGE_PATH] |
584 | f48148c3 | Iustin Pop | if iso_path and not os.path.isfile(iso_path): |
585 | e09fdcfa | Iustin Pop | raise errors.HypervisorError("The HVM CDROM image must either be a" |
586 | e09fdcfa | Iustin Pop | " regular file or a symlink pointing to"
|
587 | e09fdcfa | Iustin Pop | " an existing regular file, not %s" %
|
588 | e09fdcfa | Iustin Pop | iso_path) |
589 | f48148c3 | Iustin Pop | |
590 | e2ee1cea | Iustin Pop | kernel_path = hvparams[constants.HV_KERNEL_PATH] |
591 | e2ee1cea | Iustin Pop | if not os.path.isfile(kernel_path): |
592 | e2ee1cea | Iustin Pop | raise errors.HypervisorError("Instance kernel '%s' not found or" |
593 | e2ee1cea | Iustin Pop | " not a file" % kernel_path)
|
594 | e2ee1cea | Iustin Pop | |
595 | 65a6f9b7 | Michael Hanselmann | @classmethod
|
596 | 07813a9e | Iustin Pop | def _WriteConfigFile(cls, instance, block_devices): |
597 | 65a6f9b7 | Michael Hanselmann | """Create a Xen 3.1 HVM config file.
|
598 | 65a6f9b7 | Michael Hanselmann |
|
599 | 65a6f9b7 | Michael Hanselmann | """
|
600 | a985b417 | Iustin Pop | hvp = instance.hvparams |
601 | a985b417 | Iustin Pop | |
602 | 65a6f9b7 | Michael Hanselmann | config = StringIO() |
603 | 65a6f9b7 | Michael Hanselmann | config.write("# this is autogenerated by Ganeti, please do not edit\n#\n")
|
604 | e2ee1cea | Iustin Pop | |
605 | e2ee1cea | Iustin Pop | # kernel handling
|
606 | e2ee1cea | Iustin Pop | kpath = hvp[constants.HV_KERNEL_PATH] |
607 | e2ee1cea | Iustin Pop | config.write("kernel = '%s'\n" % kpath)
|
608 | e2ee1cea | Iustin Pop | |
609 | 65a6f9b7 | Michael Hanselmann | config.write("builder = 'hvm'\n")
|
610 | 8b3fd458 | Iustin Pop | config.write("memory = %d\n" % instance.beparams[constants.BE_MEMORY])
|
611 | 8b3fd458 | Iustin Pop | config.write("vcpus = %d\n" % instance.beparams[constants.BE_VCPUS])
|
612 | 65a6f9b7 | Michael Hanselmann | config.write("name = '%s'\n" % instance.name)
|
613 | f48148c3 | Iustin Pop | if instance.hvparams[constants.HV_PAE]:
|
614 | a21dda8b | Iustin Pop | config.write("pae = 1\n")
|
615 | a21dda8b | Iustin Pop | else:
|
616 | a21dda8b | Iustin Pop | config.write("pae = 0\n")
|
617 | f48148c3 | Iustin Pop | if instance.hvparams[constants.HV_ACPI]:
|
618 | a21dda8b | Iustin Pop | config.write("acpi = 1\n")
|
619 | a21dda8b | Iustin Pop | else:
|
620 | a21dda8b | Iustin Pop | config.write("acpi = 0\n")
|
621 | 65a6f9b7 | Michael Hanselmann | config.write("apic = 1\n")
|
622 | 65a6f9b7 | Michael Hanselmann | arch = os.uname()[4]
|
623 | 65a6f9b7 | Michael Hanselmann | if '64' in arch: |
624 | 65a6f9b7 | Michael Hanselmann | config.write("device_model = '/usr/lib64/xen/bin/qemu-dm'\n")
|
625 | 65a6f9b7 | Michael Hanselmann | else:
|
626 | 65a6f9b7 | Michael Hanselmann | config.write("device_model = '/usr/lib/xen/bin/qemu-dm'\n")
|
627 | a985b417 | Iustin Pop | config.write("boot = '%s'\n" % hvp[constants.HV_BOOT_ORDER])
|
628 | 65a6f9b7 | Michael Hanselmann | config.write("sdl = 0\n")
|
629 | 97efde45 | Guido Trotter | config.write("usb = 1\n")
|
630 | 97efde45 | Guido Trotter | config.write("usbdevice = 'tablet'\n")
|
631 | 65a6f9b7 | Michael Hanselmann | config.write("vnc = 1\n")
|
632 | a985b417 | Iustin Pop | if hvp[constants.HV_VNC_BIND_ADDRESS] is None: |
633 | d0c11cf7 | Alexander Schreiber | config.write("vnclisten = '%s'\n" % constants.VNC_DEFAULT_BIND_ADDRESS)
|
634 | d0c11cf7 | Alexander Schreiber | else:
|
635 | 6b405598 | Guido Trotter | config.write("vnclisten = '%s'\n" % hvp[constants.HV_VNC_BIND_ADDRESS])
|
636 | 65a6f9b7 | Michael Hanselmann | |
637 | 377d74c9 | Guido Trotter | if instance.network_port > constants.VNC_BASE_PORT:
|
638 | 377d74c9 | Guido Trotter | display = instance.network_port - constants.VNC_BASE_PORT |
639 | 65a6f9b7 | Michael Hanselmann | config.write("vncdisplay = %s\n" % display)
|
640 | 65a6f9b7 | Michael Hanselmann | config.write("vncunused = 0\n")
|
641 | 65a6f9b7 | Michael Hanselmann | else:
|
642 | 65a6f9b7 | Michael Hanselmann | config.write("# vncdisplay = 1\n")
|
643 | 65a6f9b7 | Michael Hanselmann | config.write("vncunused = 1\n")
|
644 | 65a6f9b7 | Michael Hanselmann | |
645 | 65a6f9b7 | Michael Hanselmann | try:
|
646 | 78f66a17 | Guido Trotter | password = utils.ReadFile(constants.VNC_PASSWORD_FILE) |
647 | 78f66a17 | Guido Trotter | except EnvironmentError, err: |
648 | 78f66a17 | Guido Trotter | raise errors.HypervisorError("Failed to open VNC password file %s: %s" % |
649 | 78f66a17 | Guido Trotter | (constants.VNC_PASSWORD_FILE, err)) |
650 | 65a6f9b7 | Michael Hanselmann | |
651 | 65a6f9b7 | Michael Hanselmann | config.write("vncpasswd = '%s'\n" % password.rstrip())
|
652 | 65a6f9b7 | Michael Hanselmann | |
653 | 65a6f9b7 | Michael Hanselmann | config.write("serial = 'pty'\n")
|
654 | 65a6f9b7 | Michael Hanselmann | config.write("localtime = 1\n")
|
655 | 65a6f9b7 | Michael Hanselmann | |
656 | 65a6f9b7 | Michael Hanselmann | vif_data = [] |
657 | a985b417 | Iustin Pop | nic_type = hvp[constants.HV_NIC_TYPE] |
658 | f48148c3 | Iustin Pop | if nic_type is None: |
659 | f48148c3 | Iustin Pop | # ensure old instances don't change
|
660 | f48148c3 | Iustin Pop | nic_type_str = ", type=ioemu"
|
661 | d08f6067 | Guido Trotter | elif nic_type == constants.HT_NIC_PARAVIRTUAL:
|
662 | f48148c3 | Iustin Pop | nic_type_str = ", type=paravirtualized"
|
663 | f48148c3 | Iustin Pop | else:
|
664 | f48148c3 | Iustin Pop | nic_type_str = ", model=%s, type=ioemu" % nic_type
|
665 | 65a6f9b7 | Michael Hanselmann | for nic in instance.nics: |
666 | f48148c3 | Iustin Pop | nic_str = "mac=%s, bridge=%s%s" % (nic.mac, nic.bridge, nic_type_str)
|
667 | 65a6f9b7 | Michael Hanselmann | ip = getattr(nic, "ip", None) |
668 | 65a6f9b7 | Michael Hanselmann | if ip is not None: |
669 | 65a6f9b7 | Michael Hanselmann | nic_str += ", ip=%s" % ip
|
670 | 65a6f9b7 | Michael Hanselmann | vif_data.append("'%s'" % nic_str)
|
671 | 65a6f9b7 | Michael Hanselmann | |
672 | 65a6f9b7 | Michael Hanselmann | config.write("vif = [%s]\n" % ",".join(vif_data)) |
673 | a21dda8b | Iustin Pop | disk_data = cls._GetConfigFileDiskData(instance.disk_template, |
674 | a21dda8b | Iustin Pop | block_devices) |
675 | a985b417 | Iustin Pop | disk_type = hvp[constants.HV_DISK_TYPE] |
676 | d08f6067 | Guido Trotter | if disk_type in (None, constants.HT_DISK_IOEMU): |
677 | 5397e0b7 | Alexander Schreiber | replacement = ",ioemu:hd"
|
678 | 5397e0b7 | Alexander Schreiber | else:
|
679 | 5397e0b7 | Alexander Schreiber | replacement = ",hd"
|
680 | 5397e0b7 | Alexander Schreiber | disk_data = [line.replace(",sd", replacement) for line in disk_data] |
681 | a985b417 | Iustin Pop | iso_path = hvp[constants.HV_CDROM_IMAGE_PATH] |
682 | f48148c3 | Iustin Pop | if iso_path:
|
683 | f48148c3 | Iustin Pop | iso = "'file:%s,hdc:cdrom,r'" % iso_path
|
684 | a21dda8b | Iustin Pop | disk_data.append(iso) |
685 | a21dda8b | Iustin Pop | |
686 | a21dda8b | Iustin Pop | config.write("disk = [%s]\n" % (",".join(disk_data))) |
687 | a21dda8b | Iustin Pop | |
688 | 65a6f9b7 | Michael Hanselmann | config.write("on_poweroff = 'destroy'\n")
|
689 | 65a6f9b7 | Michael Hanselmann | config.write("on_reboot = 'restart'\n")
|
690 | 65a6f9b7 | Michael Hanselmann | config.write("on_crash = 'restart'\n")
|
691 | 65a6f9b7 | Michael Hanselmann | # just in case it exists
|
692 | 65a6f9b7 | Michael Hanselmann | utils.RemoveFile("/etc/xen/auto/%s" % instance.name)
|
693 | 65a6f9b7 | Michael Hanselmann | try:
|
694 | 73cd67f4 | Guido Trotter | utils.WriteFile("/etc/xen/%s" % instance.name,
|
695 | 73cd67f4 | Guido Trotter | data=config.getvalue()) |
696 | 73cd67f4 | Guido Trotter | except EnvironmentError, err: |
697 | 73cd67f4 | Guido Trotter | raise errors.HypervisorError("Cannot write Xen instance confile" |
698 | 73cd67f4 | Guido Trotter | " file /etc/xen/%s: %s" %
|
699 | 73cd67f4 | Guido Trotter | (instance.name, err)) |
700 | 73cd67f4 | Guido Trotter | |
701 | 65a6f9b7 | Michael Hanselmann | return True |