root / lib / hypervisor / hv_xen.py @ fc5bb0fe
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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 | 783a6c0b | Iustin Pop | # Copyright (C) 2006, 2007, 2008, 2009, 2010 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 | b48909c8 | Iustin Pop | import logging |
27 | 65a6f9b7 | Michael Hanselmann | from cStringIO import StringIO |
28 | 65a6f9b7 | Michael Hanselmann | |
29 | 65a6f9b7 | Michael Hanselmann | from ganeti import constants |
30 | 65a6f9b7 | Michael Hanselmann | from ganeti import errors |
31 | 65a6f9b7 | Michael Hanselmann | from ganeti import utils |
32 | a2d32034 | Michael Hanselmann | from ganeti.hypervisor import hv_base |
33 | a744b676 | Manuel Franceschini | from ganeti import netutils |
34 | 55cc0a44 | Michael Hanselmann | from ganeti import objects |
35 | 65a6f9b7 | Michael Hanselmann | |
36 | 65a6f9b7 | Michael Hanselmann | |
37 | 22d568c2 | Guido Trotter | XEND_CONFIG_FILE = "/etc/xen/xend-config.sxp"
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38 | 22d568c2 | Guido Trotter | XL_CONFIG_FILE = "/etc/xen/xl.conf"
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39 | 22d568c2 | Guido Trotter | VIF_BRIDGE_SCRIPT = "/etc/xen/scripts/vif-bridge"
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40 | 18bf85b1 | Michael Hanselmann | _DOM0_NAME = "Domain-0"
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41 | 22d568c2 | Guido Trotter | |
42 | 22d568c2 | Guido Trotter | |
43 | a2d32034 | Michael Hanselmann | class XenHypervisor(hv_base.BaseHypervisor): |
44 | 65a6f9b7 | Michael Hanselmann | """Xen generic hypervisor interface
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45 | 65a6f9b7 | Michael Hanselmann |
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46 | 65a6f9b7 | Michael Hanselmann | This is the Xen base class used for both Xen PVM and HVM. It contains
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47 | 65a6f9b7 | Michael Hanselmann | all the functionality that is identical for both.
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48 | 65a6f9b7 | Michael Hanselmann |
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49 | 65a6f9b7 | Michael Hanselmann | """
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50 | d271c6fd | Iustin Pop | CAN_MIGRATE = True
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51 | 7dd106d3 | Iustin Pop | REBOOT_RETRY_COUNT = 60
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52 | 7dd106d3 | Iustin Pop | REBOOT_RETRY_INTERVAL = 10
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53 | 65a6f9b7 | Michael Hanselmann | |
54 | 3680f662 | Guido Trotter | ANCILLARY_FILES = [ |
55 | 22d568c2 | Guido Trotter | XEND_CONFIG_FILE, |
56 | 22d568c2 | Guido Trotter | XL_CONFIG_FILE, |
57 | 22d568c2 | Guido Trotter | VIF_BRIDGE_SCRIPT, |
58 | 3680f662 | Guido Trotter | ] |
59 | 69ab2e12 | Guido Trotter | ANCILLARY_FILES_OPT = [ |
60 | 69ab2e12 | Guido Trotter | XL_CONFIG_FILE, |
61 | 3680f662 | Guido Trotter | ] |
62 | 3680f662 | Guido Trotter | |
63 | c2be2532 | Guido Trotter | @staticmethod
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64 | c2be2532 | Guido Trotter | def _ConfigFileName(instance_name): |
65 | c2be2532 | Guido Trotter | """Get the config file name for an instance.
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66 | c2be2532 | Guido Trotter |
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67 | c2be2532 | Guido Trotter | @param instance_name: instance name
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68 | c2be2532 | Guido Trotter | @type instance_name: str
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69 | c2be2532 | Guido Trotter | @return: fully qualified path to instance config file
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70 | c2be2532 | Guido Trotter | @rtype: str
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71 | c2be2532 | Guido Trotter |
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72 | c2be2532 | Guido Trotter | """
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73 | c2be2532 | Guido Trotter | return "/etc/xen/%s" % instance_name |
74 | c2be2532 | Guido Trotter | |
75 | 5661b908 | Iustin Pop | @classmethod
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76 | 61eb1a46 | Guido Trotter | def _WriteConfigFile(cls, instance, startup_memory, block_devices): |
77 | 65a6f9b7 | Michael Hanselmann | """Write the Xen config file for the instance.
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78 | 65a6f9b7 | Michael Hanselmann |
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79 | 65a6f9b7 | Michael Hanselmann | """
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80 | 65a6f9b7 | Michael Hanselmann | raise NotImplementedError |
81 | 65a6f9b7 | Michael Hanselmann | |
82 | 65a6f9b7 | Michael Hanselmann | @staticmethod
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83 | 4390ccff | Guido Trotter | def _WriteConfigFileStatic(instance_name, data): |
84 | 4390ccff | Guido Trotter | """Write the Xen config file for the instance.
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85 | 4390ccff | Guido Trotter |
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86 | 4390ccff | Guido Trotter | This version of the function just writes the config file from static data.
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87 | 4390ccff | Guido Trotter |
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88 | 4390ccff | Guido Trotter | """
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89 | c2be2532 | Guido Trotter | utils.WriteFile(XenHypervisor._ConfigFileName(instance_name), data=data) |
90 | 4390ccff | Guido Trotter | |
91 | 4390ccff | Guido Trotter | @staticmethod
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92 | 4390ccff | Guido Trotter | def _ReadConfigFile(instance_name): |
93 | 4390ccff | Guido Trotter | """Returns the contents of the instance config file.
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94 | 4390ccff | Guido Trotter |
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95 | 4390ccff | Guido Trotter | """
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96 | 4390ccff | Guido Trotter | try:
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97 | c2be2532 | Guido Trotter | file_content = utils.ReadFile( |
98 | c2be2532 | Guido Trotter | XenHypervisor._ConfigFileName(instance_name)) |
99 | 4390ccff | Guido Trotter | except EnvironmentError, err: |
100 | 4390ccff | Guido Trotter | raise errors.HypervisorError("Failed to load Xen config file: %s" % err) |
101 | 4390ccff | Guido Trotter | return file_content
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102 | 4390ccff | Guido Trotter | |
103 | 4390ccff | Guido Trotter | @staticmethod
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104 | 53c776b5 | Iustin Pop | def _RemoveConfigFile(instance_name): |
105 | 65a6f9b7 | Michael Hanselmann | """Remove the xen configuration file.
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106 | 65a6f9b7 | Michael Hanselmann |
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107 | 65a6f9b7 | Michael Hanselmann | """
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108 | c2be2532 | Guido Trotter | utils.RemoveFile(XenHypervisor._ConfigFileName(instance_name)) |
109 | 65a6f9b7 | Michael Hanselmann | |
110 | c4708267 | Tsachy Shacham | @classmethod
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111 | c4708267 | Tsachy Shacham | def _CreateConfigCpus(cls, cpu_mask): |
112 | c4708267 | Tsachy Shacham | """Create a CPU config string that's compatible with Xen's
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113 | c4708267 | Tsachy Shacham | configuration file.
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114 | c4708267 | Tsachy Shacham |
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115 | c4708267 | Tsachy Shacham | """
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116 | c4708267 | Tsachy Shacham | # Convert the string CPU mask to a list of list of int's
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117 | c4708267 | Tsachy Shacham | cpu_list = utils.ParseMultiCpuMask(cpu_mask) |
118 | c4708267 | Tsachy Shacham | |
119 | c4708267 | Tsachy Shacham | if len(cpu_list) == 1: |
120 | c4708267 | Tsachy Shacham | all_cpu_mapping = cpu_list[0]
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121 | 5b43cc23 | Tsachy Shacham | if all_cpu_mapping == constants.CPU_PINNING_OFF:
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122 | c4708267 | Tsachy Shacham | # If CPU pinning has 1 entry that's "all", then remove the
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123 | c4708267 | Tsachy Shacham | # parameter from the config file
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124 | c4708267 | Tsachy Shacham | return None |
125 | c4708267 | Tsachy Shacham | else:
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126 | c4708267 | Tsachy Shacham | # If CPU pinning has one non-all entry, mapping all vCPUS (the entire
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127 | c4708267 | Tsachy Shacham | # VM) to one physical CPU, using format 'cpu = "C"'
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128 | c4708267 | Tsachy Shacham | return "cpu = \"%s\"" % ",".join(map(str, all_cpu_mapping)) |
129 | c4708267 | Tsachy Shacham | else:
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130 | c4708267 | Tsachy Shacham | def _GetCPUMap(vcpu): |
131 | c4708267 | Tsachy Shacham | if vcpu[0] == constants.CPU_PINNING_ALL_VAL: |
132 | c4708267 | Tsachy Shacham | cpu_map = constants.CPU_PINNING_ALL_XEN |
133 | c4708267 | Tsachy Shacham | else:
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134 | c4708267 | Tsachy Shacham | cpu_map = ",".join(map(str, vcpu)) |
135 | c4708267 | Tsachy Shacham | return "\"%s\"" % cpu_map |
136 | c4708267 | Tsachy Shacham | |
137 | c4708267 | Tsachy Shacham | # build the result string in format 'cpus = [ "c", "c", "c" ]',
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138 | c4708267 | Tsachy Shacham | # where each c is a physical CPU number, a range, a list, or any
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139 | c4708267 | Tsachy Shacham | # combination
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140 | c4708267 | Tsachy Shacham | return "cpus = [ %s ]" % ", ".join(map(_GetCPUMap, cpu_list)) |
141 | c4708267 | Tsachy Shacham | |
142 | 65a6f9b7 | Michael Hanselmann | @staticmethod
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143 | 06b78e8b | Michael Hanselmann | def _RunXmList(xmlist_errors): |
144 | 06b78e8b | Michael Hanselmann | """Helper function for L{_GetXMList} to run "xm list".
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145 | 06b78e8b | Michael Hanselmann |
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146 | 06b78e8b | Michael Hanselmann | """
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147 | 2876c2d6 | Guido Trotter | result = utils.RunCmd([constants.XEN_CMD, "list"])
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148 | 06b78e8b | Michael Hanselmann | if result.failed:
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149 | 06b78e8b | Michael Hanselmann | logging.error("xm list failed (%s): %s", result.fail_reason,
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150 | 06b78e8b | Michael Hanselmann | result.output) |
151 | 06b78e8b | Michael Hanselmann | xmlist_errors.append(result) |
152 | 06b78e8b | Michael Hanselmann | raise utils.RetryAgain()
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153 | 06b78e8b | Michael Hanselmann | |
154 | 06b78e8b | Michael Hanselmann | # skip over the heading
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155 | 06b78e8b | Michael Hanselmann | return result.stdout.splitlines()[1:] |
156 | 06b78e8b | Michael Hanselmann | |
157 | 06b78e8b | Michael Hanselmann | @classmethod
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158 | 06b78e8b | Michael Hanselmann | def _GetXMList(cls, include_node): |
159 | 65a6f9b7 | Michael Hanselmann | """Return the list of running instances.
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160 | 65a6f9b7 | Michael Hanselmann |
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161 | c41eea6e | Iustin Pop | If the include_node argument is True, then we return information
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162 | 65a6f9b7 | Michael Hanselmann | for dom0 also, otherwise we filter that from the return value.
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163 | 65a6f9b7 | Michael Hanselmann |
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164 | c41eea6e | Iustin Pop | @return: list of (name, id, memory, vcpus, state, time spent)
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165 | 65a6f9b7 | Michael Hanselmann |
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166 | 65a6f9b7 | Michael Hanselmann | """
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167 | 06b78e8b | Michael Hanselmann | xmlist_errors = [] |
168 | 06b78e8b | Michael Hanselmann | try:
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169 | 06b78e8b | Michael Hanselmann | lines = utils.Retry(cls._RunXmList, 1, 5, args=(xmlist_errors, )) |
170 | 06b78e8b | Michael Hanselmann | except utils.RetryTimeout:
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171 | 06b78e8b | Michael Hanselmann | if xmlist_errors:
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172 | 06b78e8b | Michael Hanselmann | xmlist_result = xmlist_errors.pop() |
173 | 65a6f9b7 | Michael Hanselmann | |
174 | 06b78e8b | Michael Hanselmann | errmsg = ("xm list failed, timeout exceeded (%s): %s" %
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175 | 06b78e8b | Michael Hanselmann | (xmlist_result.fail_reason, xmlist_result.output)) |
176 | 06b78e8b | Michael Hanselmann | else:
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177 | 06b78e8b | Michael Hanselmann | errmsg = "xm list failed"
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178 | 06b78e8b | Michael Hanselmann | |
179 | 06b78e8b | Michael Hanselmann | raise errors.HypervisorError(errmsg)
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180 | 65a6f9b7 | Michael Hanselmann | |
181 | 65a6f9b7 | Michael Hanselmann | result = [] |
182 | 65a6f9b7 | Michael Hanselmann | for line in lines: |
183 | 65a6f9b7 | Michael Hanselmann | # The format of lines is:
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184 | 65a6f9b7 | Michael Hanselmann | # Name ID Mem(MiB) VCPUs State Time(s)
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185 | 65a6f9b7 | Michael Hanselmann | # Domain-0 0 3418 4 r----- 266.2
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186 | 65a6f9b7 | Michael Hanselmann | data = line.split() |
187 | 65a6f9b7 | Michael Hanselmann | if len(data) != 6: |
188 | 65a6f9b7 | Michael Hanselmann | raise errors.HypervisorError("Can't parse output of xm list," |
189 | 65a6f9b7 | Michael Hanselmann | " line: %s" % line)
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190 | 65a6f9b7 | Michael Hanselmann | try:
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191 | 65a6f9b7 | Michael Hanselmann | data[1] = int(data[1]) |
192 | 65a6f9b7 | Michael Hanselmann | data[2] = int(data[2]) |
193 | 65a6f9b7 | Michael Hanselmann | data[3] = int(data[3]) |
194 | 65a6f9b7 | Michael Hanselmann | data[5] = float(data[5]) |
195 | 691744c4 | Iustin Pop | except (TypeError, ValueError), err: |
196 | 65a6f9b7 | Michael Hanselmann | raise errors.HypervisorError("Can't parse output of xm list," |
197 | 65a6f9b7 | Michael Hanselmann | " line: %s, error: %s" % (line, err))
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198 | 65a6f9b7 | Michael Hanselmann | |
199 | 65a6f9b7 | Michael Hanselmann | # skip the Domain-0 (optional)
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200 | 18bf85b1 | Michael Hanselmann | if include_node or data[0] != _DOM0_NAME: |
201 | 65a6f9b7 | Michael Hanselmann | result.append(data) |
202 | 65a6f9b7 | Michael Hanselmann | |
203 | 65a6f9b7 | Michael Hanselmann | return result
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204 | 65a6f9b7 | Michael Hanselmann | |
205 | 65a6f9b7 | Michael Hanselmann | def ListInstances(self): |
206 | 65a6f9b7 | Michael Hanselmann | """Get the list of running instances.
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207 | 65a6f9b7 | Michael Hanselmann |
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208 | 65a6f9b7 | Michael Hanselmann | """
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209 | 65a6f9b7 | Michael Hanselmann | xm_list = self._GetXMList(False) |
210 | 65a6f9b7 | Michael Hanselmann | names = [info[0] for info in xm_list] |
211 | 65a6f9b7 | Michael Hanselmann | return names
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212 | 65a6f9b7 | Michael Hanselmann | |
213 | 65a6f9b7 | Michael Hanselmann | def GetInstanceInfo(self, instance_name): |
214 | 65a6f9b7 | Michael Hanselmann | """Get instance properties.
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215 | 65a6f9b7 | Michael Hanselmann |
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216 | c41eea6e | Iustin Pop | @param instance_name: the instance name
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217 | c41eea6e | Iustin Pop |
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218 | c41eea6e | Iustin Pop | @return: tuple (name, id, memory, vcpus, stat, times)
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219 | 65a6f9b7 | Michael Hanselmann |
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220 | 65a6f9b7 | Michael Hanselmann | """
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221 | 18bf85b1 | Michael Hanselmann | xm_list = self._GetXMList(instance_name == _DOM0_NAME)
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222 | 65a6f9b7 | Michael Hanselmann | result = None
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223 | 65a6f9b7 | Michael Hanselmann | for data in xm_list: |
224 | 65a6f9b7 | Michael Hanselmann | if data[0] == instance_name: |
225 | 65a6f9b7 | Michael Hanselmann | result = data |
226 | 65a6f9b7 | Michael Hanselmann | break
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227 | 65a6f9b7 | Michael Hanselmann | return result
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228 | 65a6f9b7 | Michael Hanselmann | |
229 | 65a6f9b7 | Michael Hanselmann | def GetAllInstancesInfo(self): |
230 | 65a6f9b7 | Michael Hanselmann | """Get properties of all instances.
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231 | 65a6f9b7 | Michael Hanselmann |
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232 | c41eea6e | Iustin Pop | @return: list of tuples (name, id, memory, vcpus, stat, times)
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233 | c41eea6e | Iustin Pop |
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234 | 65a6f9b7 | Michael Hanselmann | """
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235 | 65a6f9b7 | Michael Hanselmann | xm_list = self._GetXMList(False) |
236 | 65a6f9b7 | Michael Hanselmann | return xm_list
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237 | 65a6f9b7 | Michael Hanselmann | |
238 | 323f9095 | Stephen Shirley | def StartInstance(self, instance, block_devices, startup_paused): |
239 | c41eea6e | Iustin Pop | """Start an instance.
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240 | c41eea6e | Iustin Pop |
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241 | c41eea6e | Iustin Pop | """
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242 | 61eb1a46 | Guido Trotter | startup_memory = self._InstanceStartupMemory(instance)
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243 | 61eb1a46 | Guido Trotter | self._WriteConfigFile(instance, startup_memory, block_devices)
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244 | 2876c2d6 | Guido Trotter | cmd = [constants.XEN_CMD, "create"]
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245 | 323f9095 | Stephen Shirley | if startup_paused:
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246 | 6555373d | Guido Trotter | cmd.extend(["-p"])
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247 | 6555373d | Guido Trotter | cmd.extend([self._ConfigFileName(instance.name)])
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248 | 323f9095 | Stephen Shirley | result = utils.RunCmd(cmd) |
249 | 65a6f9b7 | Michael Hanselmann | |
250 | 65a6f9b7 | Michael Hanselmann | if result.failed:
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251 | 65a6f9b7 | Michael Hanselmann | raise errors.HypervisorError("Failed to start instance %s: %s (%s)" % |
252 | 65a6f9b7 | Michael Hanselmann | (instance.name, result.fail_reason, |
253 | 65a6f9b7 | Michael Hanselmann | result.output)) |
254 | 65a6f9b7 | Michael Hanselmann | |
255 | bbcf7ad0 | Iustin Pop | def StopInstance(self, instance, force=False, retry=False, name=None): |
256 | c41eea6e | Iustin Pop | """Stop an instance.
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257 | c41eea6e | Iustin Pop |
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258 | c41eea6e | Iustin Pop | """
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259 | bbcf7ad0 | Iustin Pop | if name is None: |
260 | bbcf7ad0 | Iustin Pop | name = instance.name |
261 | bbcf7ad0 | Iustin Pop | self._RemoveConfigFile(name)
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262 | 65a6f9b7 | Michael Hanselmann | if force:
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263 | 2876c2d6 | Guido Trotter | command = [constants.XEN_CMD, "destroy", name]
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264 | 65a6f9b7 | Michael Hanselmann | else:
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265 | 2876c2d6 | Guido Trotter | command = [constants.XEN_CMD, "shutdown", name]
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266 | 65a6f9b7 | Michael Hanselmann | result = utils.RunCmd(command) |
267 | 65a6f9b7 | Michael Hanselmann | |
268 | 65a6f9b7 | Michael Hanselmann | if result.failed:
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269 | 3213d3c8 | Iustin Pop | raise errors.HypervisorError("Failed to stop instance %s: %s, %s" % |
270 | bbcf7ad0 | Iustin Pop | (name, result.fail_reason, result.output)) |
271 | 65a6f9b7 | Michael Hanselmann | |
272 | 65a6f9b7 | Michael Hanselmann | def RebootInstance(self, instance): |
273 | c41eea6e | Iustin Pop | """Reboot an instance.
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274 | c41eea6e | Iustin Pop |
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275 | c41eea6e | Iustin Pop | """
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276 | 7dd106d3 | Iustin Pop | ini_info = self.GetInstanceInfo(instance.name)
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277 | 65a6f9b7 | Michael Hanselmann | |
278 | e0561198 | Iustin Pop | if ini_info is None: |
279 | e0561198 | Iustin Pop | raise errors.HypervisorError("Failed to reboot instance %s," |
280 | e0561198 | Iustin Pop | " not running" % instance.name)
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281 | e0561198 | Iustin Pop | |
282 | 2876c2d6 | Guido Trotter | result = utils.RunCmd([constants.XEN_CMD, "reboot", instance.name])
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283 | 65a6f9b7 | Michael Hanselmann | if result.failed:
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284 | 3213d3c8 | Iustin Pop | raise errors.HypervisorError("Failed to reboot instance %s: %s, %s" % |
285 | 3213d3c8 | Iustin Pop | (instance.name, result.fail_reason, |
286 | 3213d3c8 | Iustin Pop | result.output)) |
287 | 06b78e8b | Michael Hanselmann | |
288 | 06b78e8b | Michael Hanselmann | def _CheckInstance(): |
289 | 7dd106d3 | Iustin Pop | new_info = self.GetInstanceInfo(instance.name)
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290 | 06b78e8b | Michael Hanselmann | |
291 | 06b78e8b | Michael Hanselmann | # check if the domain ID has changed or the run time has decreased
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292 | e0561198 | Iustin Pop | if (new_info is not None and |
293 | e0561198 | Iustin Pop | (new_info[1] != ini_info[1] or new_info[5] < ini_info[5])): |
294 | 06b78e8b | Michael Hanselmann | return
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295 | 7dd106d3 | Iustin Pop | |
296 | 06b78e8b | Michael Hanselmann | raise utils.RetryAgain()
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297 | 06b78e8b | Michael Hanselmann | |
298 | 06b78e8b | Michael Hanselmann | try:
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299 | 06b78e8b | Michael Hanselmann | utils.Retry(_CheckInstance, self.REBOOT_RETRY_INTERVAL,
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300 | 06b78e8b | Michael Hanselmann | self.REBOOT_RETRY_INTERVAL * self.REBOOT_RETRY_COUNT) |
301 | 06b78e8b | Michael Hanselmann | except utils.RetryTimeout:
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302 | 7dd106d3 | Iustin Pop | raise errors.HypervisorError("Failed to reboot instance %s: instance" |
303 | 7dd106d3 | Iustin Pop | " did not reboot in the expected interval" %
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304 | 7dd106d3 | Iustin Pop | (instance.name, )) |
305 | 65a6f9b7 | Michael Hanselmann | |
306 | 2c7a0373 | Guido Trotter | def BalloonInstanceMemory(self, instance, mem): |
307 | 2c7a0373 | Guido Trotter | """Balloon an instance memory to a certain value.
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308 | 2c7a0373 | Guido Trotter |
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309 | 2c7a0373 | Guido Trotter | @type instance: L{objects.Instance}
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310 | 2c7a0373 | Guido Trotter | @param instance: instance to be accepted
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311 | 2c7a0373 | Guido Trotter | @type mem: int
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312 | 2c7a0373 | Guido Trotter | @param mem: actual memory size to use for instance runtime
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313 | 2c7a0373 | Guido Trotter |
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314 | 2c7a0373 | Guido Trotter | """
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315 | 2c7a0373 | Guido Trotter | cmd = [constants.XEN_CMD, "mem-set", instance.name, mem]
|
316 | 2c7a0373 | Guido Trotter | result = utils.RunCmd(cmd) |
317 | 2c7a0373 | Guido Trotter | if result.failed:
|
318 | 2c7a0373 | Guido Trotter | raise errors.HypervisorError("Failed to balloon instance %s: %s (%s)" % |
319 | 2c7a0373 | Guido Trotter | (instance.name, result.fail_reason, |
320 | 2c7a0373 | Guido Trotter | result.output)) |
321 | 2c7a0373 | Guido Trotter | cmd = ["sed", "-ie", "s/^memory.*$/memory = %s/" % mem] |
322 | 2c7a0373 | Guido Trotter | cmd.append(XenHypervisor._ConfigFileName(instance.name)) |
323 | 2c7a0373 | Guido Trotter | result = utils.RunCmd(cmd) |
324 | 2c7a0373 | Guido Trotter | if result.failed:
|
325 | 2c7a0373 | Guido Trotter | raise errors.HypervisorError("Failed to update memory for %s: %s (%s)" % |
326 | 2c7a0373 | Guido Trotter | (instance.name, result.fail_reason, |
327 | 2c7a0373 | Guido Trotter | result.output)) |
328 | 2c7a0373 | Guido Trotter | |
329 | 65a6f9b7 | Michael Hanselmann | def GetNodeInfo(self): |
330 | 65a6f9b7 | Michael Hanselmann | """Return information about the node.
|
331 | 65a6f9b7 | Michael Hanselmann |
|
332 | 0105bad3 | Iustin Pop | @return: a dict with the following keys (memory values in MiB):
|
333 | c41eea6e | Iustin Pop | - memory_total: the total memory size on the node
|
334 | c41eea6e | Iustin Pop | - memory_free: the available memory on the node for instances
|
335 | c41eea6e | Iustin Pop | - memory_dom0: the memory used by the node itself, if available
|
336 | 0105bad3 | Iustin Pop | - nr_cpus: total number of CPUs
|
337 | 0105bad3 | Iustin Pop | - nr_nodes: in a NUMA system, the number of domains
|
338 | 0105bad3 | Iustin Pop | - nr_sockets: the number of physical CPU sockets in the node
|
339 | 34fbc862 | Andrea Spadaccini | - hv_version: the hypervisor version in the form (major, minor)
|
340 | 65a6f9b7 | Michael Hanselmann |
|
341 | 65a6f9b7 | Michael Hanselmann | """
|
342 | 2876c2d6 | Guido Trotter | result = utils.RunCmd([constants.XEN_CMD, "info"])
|
343 | 65a6f9b7 | Michael Hanselmann | if result.failed:
|
344 | b48909c8 | Iustin Pop | logging.error("Can't run 'xm info' (%s): %s", result.fail_reason,
|
345 | b48909c8 | Iustin Pop | result.output) |
346 | 65a6f9b7 | Michael Hanselmann | return None |
347 | 65a6f9b7 | Michael Hanselmann | |
348 | 65a6f9b7 | Michael Hanselmann | xmoutput = result.stdout.splitlines() |
349 | 65a6f9b7 | Michael Hanselmann | result = {} |
350 | 0105bad3 | Iustin Pop | cores_per_socket = threads_per_core = nr_cpus = None
|
351 | 34fbc862 | Andrea Spadaccini | xen_major, xen_minor = None, None |
352 | 16ca6243 | Michael Hanselmann | memory_total = None
|
353 | 16ca6243 | Michael Hanselmann | memory_free = None
|
354 | 16ca6243 | Michael Hanselmann | |
355 | 65a6f9b7 | Michael Hanselmann | for line in xmoutput: |
356 | 65a6f9b7 | Michael Hanselmann | splitfields = line.split(":", 1) |
357 | 65a6f9b7 | Michael Hanselmann | |
358 | 65a6f9b7 | Michael Hanselmann | if len(splitfields) > 1: |
359 | 65a6f9b7 | Michael Hanselmann | key = splitfields[0].strip()
|
360 | 65a6f9b7 | Michael Hanselmann | val = splitfields[1].strip()
|
361 | 16ca6243 | Michael Hanselmann | |
362 | 16ca6243 | Michael Hanselmann | # note: in xen 3, memory has changed to total_memory
|
363 | d0c8c01d | Iustin Pop | if key == "memory" or key == "total_memory": |
364 | 16ca6243 | Michael Hanselmann | memory_total = int(val)
|
365 | d0c8c01d | Iustin Pop | elif key == "free_memory": |
366 | 16ca6243 | Michael Hanselmann | memory_free = int(val)
|
367 | d0c8c01d | Iustin Pop | elif key == "nr_cpus": |
368 | d0c8c01d | Iustin Pop | nr_cpus = result["cpu_total"] = int(val) |
369 | d0c8c01d | Iustin Pop | elif key == "nr_nodes": |
370 | d0c8c01d | Iustin Pop | result["cpu_nodes"] = int(val) |
371 | d0c8c01d | Iustin Pop | elif key == "cores_per_socket": |
372 | 0105bad3 | Iustin Pop | cores_per_socket = int(val)
|
373 | d0c8c01d | Iustin Pop | elif key == "threads_per_core": |
374 | 0105bad3 | Iustin Pop | threads_per_core = int(val)
|
375 | 34fbc862 | Andrea Spadaccini | elif key == "xen_major": |
376 | 34fbc862 | Andrea Spadaccini | xen_major = int(val)
|
377 | 34fbc862 | Andrea Spadaccini | elif key == "xen_minor": |
378 | 34fbc862 | Andrea Spadaccini | xen_minor = int(val)
|
379 | 0105bad3 | Iustin Pop | |
380 | 16ca6243 | Michael Hanselmann | if None not in [cores_per_socket, threads_per_core, nr_cpus]: |
381 | d0c8c01d | Iustin Pop | result["cpu_sockets"] = nr_cpus / (cores_per_socket * threads_per_core)
|
382 | 0105bad3 | Iustin Pop | |
383 | 16ca6243 | Michael Hanselmann | total_instmem = 0
|
384 | 16ca6243 | Michael Hanselmann | for (name, _, mem, vcpus, _, _) in self._GetXMList(True): |
385 | 16ca6243 | Michael Hanselmann | if name == _DOM0_NAME:
|
386 | 16ca6243 | Michael Hanselmann | result["memory_dom0"] = mem
|
387 | 16ca6243 | Michael Hanselmann | result["dom0_cpus"] = vcpus
|
388 | 16ca6243 | Michael Hanselmann | |
389 | 16ca6243 | Michael Hanselmann | # Include Dom0 in total memory usage
|
390 | 16ca6243 | Michael Hanselmann | total_instmem += mem |
391 | 16ca6243 | Michael Hanselmann | |
392 | 16ca6243 | Michael Hanselmann | if memory_free is not None: |
393 | 16ca6243 | Michael Hanselmann | result["memory_free"] = memory_free
|
394 | 16ca6243 | Michael Hanselmann | |
395 | 16ca6243 | Michael Hanselmann | if memory_total is not None: |
396 | 16ca6243 | Michael Hanselmann | result["memory_total"] = memory_total
|
397 | 16ca6243 | Michael Hanselmann | |
398 | 16ca6243 | Michael Hanselmann | # Calculate memory used by hypervisor
|
399 | 16ca6243 | Michael Hanselmann | if None not in [memory_total, memory_free, total_instmem]: |
400 | 16ca6243 | Michael Hanselmann | result["memory_hv"] = memory_total - memory_free - total_instmem
|
401 | 65a6f9b7 | Michael Hanselmann | |
402 | 34fbc862 | Andrea Spadaccini | if not (xen_major is None or xen_minor is None): |
403 | 34fbc862 | Andrea Spadaccini | result[constants.HV_NODEINFO_KEY_VERSION] = (xen_major, xen_minor) |
404 | 34fbc862 | Andrea Spadaccini | |
405 | 65a6f9b7 | Michael Hanselmann | return result
|
406 | 65a6f9b7 | Michael Hanselmann | |
407 | 637ce7f9 | Guido Trotter | @classmethod
|
408 | 55cc0a44 | Michael Hanselmann | def GetInstanceConsole(cls, instance, hvparams, beparams): |
409 | 65a6f9b7 | Michael Hanselmann | """Return a command for connecting to the console of an instance.
|
410 | 65a6f9b7 | Michael Hanselmann |
|
411 | 65a6f9b7 | Michael Hanselmann | """
|
412 | 55cc0a44 | Michael Hanselmann | return objects.InstanceConsole(instance=instance.name,
|
413 | 55cc0a44 | Michael Hanselmann | kind=constants.CONS_SSH, |
414 | 55cc0a44 | Michael Hanselmann | host=instance.primary_node, |
415 | 55cc0a44 | Michael Hanselmann | user=constants.GANETI_RUNAS, |
416 | 61631293 | Stephen Shirley | command=[constants.XM_CONSOLE_WRAPPER, |
417 | 61631293 | Stephen Shirley | instance.name]) |
418 | 65a6f9b7 | Michael Hanselmann | |
419 | 65a6f9b7 | Michael Hanselmann | def Verify(self): |
420 | 65a6f9b7 | Michael Hanselmann | """Verify the hypervisor.
|
421 | 65a6f9b7 | Michael Hanselmann |
|
422 | 65a6f9b7 | Michael Hanselmann | For Xen, this verifies that the xend process is running.
|
423 | 65a6f9b7 | Michael Hanselmann |
|
424 | 65a6f9b7 | Michael Hanselmann | """
|
425 | 2876c2d6 | Guido Trotter | result = utils.RunCmd([constants.XEN_CMD, "info"])
|
426 | e3e66f02 | Michael Hanselmann | if result.failed:
|
427 | 3213d3c8 | Iustin Pop | return "'xm info' failed: %s, %s" % (result.fail_reason, result.output) |
428 | 65a6f9b7 | Michael Hanselmann | |
429 | 65a6f9b7 | Michael Hanselmann | @staticmethod
|
430 | 525011bc | Maciej Bliziński | def _GetConfigFileDiskData(block_devices, blockdev_prefix): |
431 | 65a6f9b7 | Michael Hanselmann | """Get disk directive for xen config file.
|
432 | 65a6f9b7 | Michael Hanselmann |
|
433 | 65a6f9b7 | Michael Hanselmann | This method builds the xen config disk directive according to the
|
434 | 65a6f9b7 | Michael Hanselmann | given disk_template and block_devices.
|
435 | 65a6f9b7 | Michael Hanselmann |
|
436 | c41eea6e | Iustin Pop | @param block_devices: list of tuples (cfdev, rldev):
|
437 | c41eea6e | Iustin Pop | - cfdev: dict containing ganeti config disk part
|
438 | c41eea6e | Iustin Pop | - rldev: ganeti.bdev.BlockDev object
|
439 | 525011bc | Maciej Bliziński | @param blockdev_prefix: a string containing blockdevice prefix,
|
440 | 525011bc | Maciej Bliziński | e.g. "sd" for /dev/sda
|
441 | 65a6f9b7 | Michael Hanselmann |
|
442 | c41eea6e | Iustin Pop | @return: string containing disk directive for xen instance config file
|
443 | 65a6f9b7 | Michael Hanselmann |
|
444 | 65a6f9b7 | Michael Hanselmann | """
|
445 | 65a6f9b7 | Michael Hanselmann | FILE_DRIVER_MAP = { |
446 | 65a6f9b7 | Michael Hanselmann | constants.FD_LOOP: "file",
|
447 | 65a6f9b7 | Michael Hanselmann | constants.FD_BLKTAP: "tap:aio",
|
448 | 65a6f9b7 | Michael Hanselmann | } |
449 | 65a6f9b7 | Michael Hanselmann | disk_data = [] |
450 | 2864f2d9 | Iustin Pop | if len(block_devices) > 24: |
451 | 2864f2d9 | Iustin Pop | # 'z' - 'a' = 24
|
452 | 2864f2d9 | Iustin Pop | raise errors.HypervisorError("Too many disks") |
453 | d0c8c01d | Iustin Pop | namespace = [blockdev_prefix + chr(i + ord("a")) for i in range(24)] |
454 | 069cfbf1 | Iustin Pop | for sd_name, (cfdev, dev_path) in zip(namespace, block_devices): |
455 | d34b16d7 | Iustin Pop | if cfdev.mode == constants.DISK_RDWR:
|
456 | d34b16d7 | Iustin Pop | mode = "w"
|
457 | d34b16d7 | Iustin Pop | else:
|
458 | d34b16d7 | Iustin Pop | mode = "r"
|
459 | 65a6f9b7 | Michael Hanselmann | if cfdev.dev_type == constants.LD_FILE:
|
460 | d34b16d7 | Iustin Pop | line = "'%s:%s,%s,%s'" % (FILE_DRIVER_MAP[cfdev.physical_id[0]], |
461 | d34b16d7 | Iustin Pop | dev_path, sd_name, mode) |
462 | 65a6f9b7 | Michael Hanselmann | else:
|
463 | d34b16d7 | Iustin Pop | line = "'phy:%s,%s,%s'" % (dev_path, sd_name, mode)
|
464 | 65a6f9b7 | Michael Hanselmann | disk_data.append(line) |
465 | 65a6f9b7 | Michael Hanselmann | |
466 | 65a6f9b7 | Michael Hanselmann | return disk_data
|
467 | 65a6f9b7 | Michael Hanselmann | |
468 | 4390ccff | Guido Trotter | def MigrationInfo(self, instance): |
469 | 4390ccff | Guido Trotter | """Get instance information to perform a migration.
|
470 | 4390ccff | Guido Trotter |
|
471 | 4390ccff | Guido Trotter | @type instance: L{objects.Instance}
|
472 | 4390ccff | Guido Trotter | @param instance: instance to be migrated
|
473 | 4390ccff | Guido Trotter | @rtype: string
|
474 | 4390ccff | Guido Trotter | @return: content of the xen config file
|
475 | 4390ccff | Guido Trotter |
|
476 | 4390ccff | Guido Trotter | """
|
477 | 4390ccff | Guido Trotter | return self._ReadConfigFile(instance.name) |
478 | 4390ccff | Guido Trotter | |
479 | 4390ccff | Guido Trotter | def AcceptInstance(self, instance, info, target): |
480 | 4390ccff | Guido Trotter | """Prepare to accept an instance.
|
481 | 4390ccff | Guido Trotter |
|
482 | 4390ccff | Guido Trotter | @type instance: L{objects.Instance}
|
483 | 4390ccff | Guido Trotter | @param instance: instance to be accepted
|
484 | 4390ccff | Guido Trotter | @type info: string
|
485 | 4390ccff | Guido Trotter | @param info: content of the xen config file on the source node
|
486 | 4390ccff | Guido Trotter | @type target: string
|
487 | 4390ccff | Guido Trotter | @param target: target host (usually ip), on this node
|
488 | 4390ccff | Guido Trotter |
|
489 | 4390ccff | Guido Trotter | """
|
490 | 4390ccff | Guido Trotter | pass
|
491 | 4390ccff | Guido Trotter | |
492 | 60af751d | Andrea Spadaccini | def FinalizeMigrationDst(self, instance, info, success): |
493 | 4390ccff | Guido Trotter | """Finalize an instance migration.
|
494 | 4390ccff | Guido Trotter |
|
495 | 4390ccff | Guido Trotter | After a successful migration we write the xen config file.
|
496 | 4390ccff | Guido Trotter | We do nothing on a failure, as we did not change anything at accept time.
|
497 | 4390ccff | Guido Trotter |
|
498 | 4390ccff | Guido Trotter | @type instance: L{objects.Instance}
|
499 | fea922fa | Guido Trotter | @param instance: instance whose migration is being finalized
|
500 | 4390ccff | Guido Trotter | @type info: string
|
501 | 4390ccff | Guido Trotter | @param info: content of the xen config file on the source node
|
502 | 4390ccff | Guido Trotter | @type success: boolean
|
503 | 4390ccff | Guido Trotter | @param success: whether the migration was a success or a failure
|
504 | 4390ccff | Guido Trotter |
|
505 | 4390ccff | Guido Trotter | """
|
506 | 4390ccff | Guido Trotter | if success:
|
507 | 4390ccff | Guido Trotter | self._WriteConfigFileStatic(instance.name, info)
|
508 | 4390ccff | Guido Trotter | |
509 | 6e7275c0 | Iustin Pop | def MigrateInstance(self, instance, target, live): |
510 | 6e7275c0 | Iustin Pop | """Migrate an instance to a target node.
|
511 | 6e7275c0 | Iustin Pop |
|
512 | 6e7275c0 | Iustin Pop | The migration will not be attempted if the instance is not
|
513 | 6e7275c0 | Iustin Pop | currently running.
|
514 | 6e7275c0 | Iustin Pop |
|
515 | 58d38b02 | Iustin Pop | @type instance: L{objects.Instance}
|
516 | 58d38b02 | Iustin Pop | @param instance: the instance to be migrated
|
517 | fdf7f055 | Guido Trotter | @type target: string
|
518 | fdf7f055 | Guido Trotter | @param target: ip address of the target node
|
519 | fdf7f055 | Guido Trotter | @type live: boolean
|
520 | fdf7f055 | Guido Trotter | @param live: perform a live migration
|
521 | fdf7f055 | Guido Trotter |
|
522 | 6e7275c0 | Iustin Pop | """
|
523 | 58d38b02 | Iustin Pop | if self.GetInstanceInfo(instance.name) is None: |
524 | 6e7275c0 | Iustin Pop | raise errors.HypervisorError("Instance not running, cannot migrate") |
525 | 50716be0 | Iustin Pop | |
526 | 641ae041 | Iustin Pop | port = instance.hvparams[constants.HV_MIGRATION_PORT] |
527 | 50716be0 | Iustin Pop | |
528 | a744b676 | Manuel Franceschini | if not netutils.TcpPing(target, port, live_port_needed=True): |
529 | 50716be0 | Iustin Pop | raise errors.HypervisorError("Remote host %s not listening on port" |
530 | 50716be0 | Iustin Pop | " %s, cannot migrate" % (target, port))
|
531 | 50716be0 | Iustin Pop | |
532 | 6555373d | Guido Trotter | # FIXME: migrate must be upgraded for transitioning to "xl" (xen 4.1).
|
533 | 6555373d | Guido Trotter | # -l doesn't exist anymore
|
534 | 6555373d | Guido Trotter | # -p doesn't exist anymore
|
535 | 6555373d | Guido Trotter | # -C config_file must be passed
|
536 | 6555373d | Guido Trotter | # ssh must recognize the key of the target host for the migration
|
537 | 2876c2d6 | Guido Trotter | args = [constants.XEN_CMD, "migrate", "-p", "%d" % port] |
538 | 6e7275c0 | Iustin Pop | if live:
|
539 | 6e7275c0 | Iustin Pop | args.append("-l")
|
540 | 58d38b02 | Iustin Pop | args.extend([instance.name, target]) |
541 | 6e7275c0 | Iustin Pop | result = utils.RunCmd(args) |
542 | 6e7275c0 | Iustin Pop | if result.failed:
|
543 | 6e7275c0 | Iustin Pop | raise errors.HypervisorError("Failed to migrate instance %s: %s" % |
544 | 58d38b02 | Iustin Pop | (instance.name, result.output)) |
545 | 60af751d | Andrea Spadaccini | |
546 | 60af751d | Andrea Spadaccini | def FinalizeMigrationSource(self, instance, success, live): |
547 | 60af751d | Andrea Spadaccini | """Finalize the instance migration on the source node.
|
548 | 60af751d | Andrea Spadaccini |
|
549 | 60af751d | Andrea Spadaccini | @type instance: L{objects.Instance}
|
550 | 60af751d | Andrea Spadaccini | @param instance: the instance that was migrated
|
551 | 60af751d | Andrea Spadaccini | @type success: bool
|
552 | 60af751d | Andrea Spadaccini | @param success: whether the migration succeeded or not
|
553 | 60af751d | Andrea Spadaccini | @type live: bool
|
554 | 60af751d | Andrea Spadaccini | @param live: whether the user requested a live migration or not
|
555 | 60af751d | Andrea Spadaccini |
|
556 | 60af751d | Andrea Spadaccini | """
|
557 | 60af751d | Andrea Spadaccini | # pylint: disable=W0613
|
558 | 60af751d | Andrea Spadaccini | if success:
|
559 | 60af751d | Andrea Spadaccini | # remove old xen file after migration succeeded
|
560 | 60af751d | Andrea Spadaccini | try:
|
561 | 60af751d | Andrea Spadaccini | self._RemoveConfigFile(instance.name)
|
562 | 60af751d | Andrea Spadaccini | except EnvironmentError: |
563 | 60af751d | Andrea Spadaccini | logging.exception("Failure while removing instance config file")
|
564 | 60af751d | Andrea Spadaccini | |
565 | 60af751d | Andrea Spadaccini | def GetMigrationStatus(self, instance): |
566 | 60af751d | Andrea Spadaccini | """Get the migration status
|
567 | 60af751d | Andrea Spadaccini |
|
568 | 60af751d | Andrea Spadaccini | As MigrateInstance for Xen is still blocking, if this method is called it
|
569 | 60af751d | Andrea Spadaccini | means that MigrateInstance has completed successfully. So we can safely
|
570 | 60af751d | Andrea Spadaccini | assume that the migration was successful and notify this fact to the client.
|
571 | 60af751d | Andrea Spadaccini |
|
572 | 60af751d | Andrea Spadaccini | @type instance: L{objects.Instance}
|
573 | 60af751d | Andrea Spadaccini | @param instance: the instance that is being migrated
|
574 | 60af751d | Andrea Spadaccini | @rtype: L{objects.MigrationStatus}
|
575 | 60af751d | Andrea Spadaccini | @return: the status of the current migration (one of
|
576 | 60af751d | Andrea Spadaccini | L{constants.HV_MIGRATION_VALID_STATUSES}), plus any additional
|
577 | 60af751d | Andrea Spadaccini | progress info that can be retrieved from the hypervisor
|
578 | 60af751d | Andrea Spadaccini |
|
579 | 60af751d | Andrea Spadaccini | """
|
580 | 60af751d | Andrea Spadaccini | return objects.MigrationStatus(status=constants.HV_MIGRATION_COMPLETED)
|
581 | 6e7275c0 | Iustin Pop | |
582 | f5118ade | Iustin Pop | @classmethod
|
583 | f5118ade | Iustin Pop | def PowercycleNode(cls): |
584 | f5118ade | Iustin Pop | """Xen-specific powercycle.
|
585 | f5118ade | Iustin Pop |
|
586 | f5118ade | Iustin Pop | This first does a Linux reboot (which triggers automatically a Xen
|
587 | f5118ade | Iustin Pop | reboot), and if that fails it tries to do a Xen reboot. The reason
|
588 | f5118ade | Iustin Pop | we don't try a Xen reboot first is that the xen reboot launches an
|
589 | f5118ade | Iustin Pop | external command which connects to the Xen hypervisor, and that
|
590 | f5118ade | Iustin Pop | won't work in case the root filesystem is broken and/or the xend
|
591 | f5118ade | Iustin Pop | daemon is not working.
|
592 | f5118ade | Iustin Pop |
|
593 | f5118ade | Iustin Pop | """
|
594 | f5118ade | Iustin Pop | try:
|
595 | f5118ade | Iustin Pop | cls.LinuxPowercycle() |
596 | f5118ade | Iustin Pop | finally:
|
597 | 2876c2d6 | Guido Trotter | utils.RunCmd([constants.XEN_CMD, "debug", "R"]) |
598 | f5118ade | Iustin Pop | |
599 | 65a6f9b7 | Michael Hanselmann | |
600 | 65a6f9b7 | Michael Hanselmann | class XenPvmHypervisor(XenHypervisor): |
601 | 65a6f9b7 | Michael Hanselmann | """Xen PVM hypervisor interface"""
|
602 | 65a6f9b7 | Michael Hanselmann | |
603 | 205ab586 | Iustin Pop | PARAMETERS = { |
604 | 2f2dbb4b | Jun Futagawa | constants.HV_USE_BOOTLOADER: hv_base.NO_CHECK, |
605 | 2f2dbb4b | Jun Futagawa | constants.HV_BOOTLOADER_PATH: hv_base.OPT_FILE_CHECK, |
606 | 2f2dbb4b | Jun Futagawa | constants.HV_BOOTLOADER_ARGS: hv_base.NO_CHECK, |
607 | 205ab586 | Iustin Pop | constants.HV_KERNEL_PATH: hv_base.REQ_FILE_CHECK, |
608 | 205ab586 | Iustin Pop | constants.HV_INITRD_PATH: hv_base.OPT_FILE_CHECK, |
609 | 7adf7814 | René Nussbaumer | constants.HV_ROOT_PATH: hv_base.NO_CHECK, |
610 | 205ab586 | Iustin Pop | constants.HV_KERNEL_ARGS: hv_base.NO_CHECK, |
611 | e2d14329 | Andrea Spadaccini | constants.HV_MIGRATION_PORT: hv_base.REQ_NET_PORT_CHECK, |
612 | 783a6c0b | Iustin Pop | constants.HV_MIGRATION_MODE: hv_base.MIGRATION_MODE_CHECK, |
613 | 525011bc | Maciej Bliziński | # TODO: Add a check for the blockdev prefix (matching [a-z:] or similar).
|
614 | 525011bc | Maciej Bliziński | constants.HV_BLOCKDEV_PREFIX: hv_base.NO_CHECK, |
615 | 990ade2d | Stephen Shirley | constants.HV_REBOOT_BEHAVIOR: |
616 | c4708267 | Tsachy Shacham | hv_base.ParamInSet(True, constants.REBOOT_BEHAVIORS),
|
617 | c4708267 | Tsachy Shacham | constants.HV_CPU_MASK: hv_base.OPT_MULTI_CPU_MASK_CHECK, |
618 | 205ab586 | Iustin Pop | } |
619 | f48148c3 | Iustin Pop | |
620 | 65a6f9b7 | Michael Hanselmann | @classmethod
|
621 | 61eb1a46 | Guido Trotter | def _WriteConfigFile(cls, instance, startup_memory, block_devices): |
622 | 65a6f9b7 | Michael Hanselmann | """Write the Xen config file for the instance.
|
623 | 65a6f9b7 | Michael Hanselmann |
|
624 | 65a6f9b7 | Michael Hanselmann | """
|
625 | a985b417 | Iustin Pop | hvp = instance.hvparams |
626 | 65a6f9b7 | Michael Hanselmann | config = StringIO() |
627 | 65a6f9b7 | Michael Hanselmann | config.write("# this is autogenerated by Ganeti, please do not edit\n#\n")
|
628 | 65a6f9b7 | Michael Hanselmann | |
629 | 2f2dbb4b | Jun Futagawa | # if bootloader is True, use bootloader instead of kernel and ramdisk
|
630 | 2f2dbb4b | Jun Futagawa | # parameters.
|
631 | 2f2dbb4b | Jun Futagawa | if hvp[constants.HV_USE_BOOTLOADER]:
|
632 | 2f2dbb4b | Jun Futagawa | # bootloader handling
|
633 | 2f2dbb4b | Jun Futagawa | bootloader_path = hvp[constants.HV_BOOTLOADER_PATH] |
634 | 2f2dbb4b | Jun Futagawa | if bootloader_path:
|
635 | 2f2dbb4b | Jun Futagawa | config.write("bootloader = '%s'\n" % bootloader_path)
|
636 | 2f2dbb4b | Jun Futagawa | else:
|
637 | 2f2dbb4b | Jun Futagawa | raise errors.HypervisorError("Bootloader enabled, but missing" |
638 | 2f2dbb4b | Jun Futagawa | " bootloader path")
|
639 | 65a6f9b7 | Michael Hanselmann | |
640 | 2f2dbb4b | Jun Futagawa | bootloader_args = hvp[constants.HV_BOOTLOADER_ARGS] |
641 | 2f2dbb4b | Jun Futagawa | if bootloader_args:
|
642 | 2f2dbb4b | Jun Futagawa | config.write("bootargs = '%s'\n" % bootloader_args)
|
643 | 2f2dbb4b | Jun Futagawa | else:
|
644 | 2f2dbb4b | Jun Futagawa | # kernel handling
|
645 | 2f2dbb4b | Jun Futagawa | kpath = hvp[constants.HV_KERNEL_PATH] |
646 | 2f2dbb4b | Jun Futagawa | config.write("kernel = '%s'\n" % kpath)
|
647 | 2f2dbb4b | Jun Futagawa | |
648 | 2f2dbb4b | Jun Futagawa | # initrd handling
|
649 | 2f2dbb4b | Jun Futagawa | initrd_path = hvp[constants.HV_INITRD_PATH] |
650 | 2f2dbb4b | Jun Futagawa | if initrd_path:
|
651 | 2f2dbb4b | Jun Futagawa | config.write("ramdisk = '%s'\n" % initrd_path)
|
652 | 65a6f9b7 | Michael Hanselmann | |
653 | 65a6f9b7 | Michael Hanselmann | # rest of the settings
|
654 | 61eb1a46 | Guido Trotter | config.write("memory = %d\n" % startup_memory)
|
655 | 80121c83 | Guido Trotter | config.write("maxmem = %d\n" % instance.beparams[constants.BE_MAXMEM])
|
656 | 8b3fd458 | Iustin Pop | config.write("vcpus = %d\n" % instance.beparams[constants.BE_VCPUS])
|
657 | c4708267 | Tsachy Shacham | cpu_pinning = cls._CreateConfigCpus(hvp[constants.HV_CPU_MASK]) |
658 | c4708267 | Tsachy Shacham | if cpu_pinning:
|
659 | c4708267 | Tsachy Shacham | config.write("%s\n" % cpu_pinning)
|
660 | c4708267 | Tsachy Shacham | |
661 | 65a6f9b7 | Michael Hanselmann | config.write("name = '%s'\n" % instance.name)
|
662 | 65a6f9b7 | Michael Hanselmann | |
663 | 65a6f9b7 | Michael Hanselmann | vif_data = [] |
664 | 65a6f9b7 | Michael Hanselmann | for nic in instance.nics: |
665 | 503b97a9 | Guido Trotter | nic_str = "mac=%s" % (nic.mac)
|
666 | 65a6f9b7 | Michael Hanselmann | ip = getattr(nic, "ip", None) |
667 | 65a6f9b7 | Michael Hanselmann | if ip is not None: |
668 | 65a6f9b7 | Michael Hanselmann | nic_str += ", ip=%s" % ip
|
669 | 503b97a9 | Guido Trotter | if nic.nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
|
670 | 503b97a9 | Guido Trotter | nic_str += ", bridge=%s" % nic.nicparams[constants.NIC_LINK]
|
671 | 0183a697 | Alessandro Cincaglini | vif_data.append("'%s'" % nic_str)
|
672 | 65a6f9b7 | Michael Hanselmann | |
673 | 525011bc | Maciej Bliziński | disk_data = cls._GetConfigFileDiskData(block_devices, |
674 | 525011bc | Maciej Bliziński | hvp[constants.HV_BLOCKDEV_PREFIX]) |
675 | 7ed85ffe | Iustin Pop | |
676 | 65a6f9b7 | Michael Hanselmann | config.write("vif = [%s]\n" % ",".join(vif_data)) |
677 | 7ed85ffe | Iustin Pop | config.write("disk = [%s]\n" % ",".join(disk_data)) |
678 | 074ca009 | Guido Trotter | |
679 | 7adf7814 | René Nussbaumer | if hvp[constants.HV_ROOT_PATH]:
|
680 | 7adf7814 | René Nussbaumer | config.write("root = '%s'\n" % hvp[constants.HV_ROOT_PATH])
|
681 | 65a6f9b7 | Michael Hanselmann | config.write("on_poweroff = 'destroy'\n")
|
682 | 990ade2d | Stephen Shirley | if hvp[constants.HV_REBOOT_BEHAVIOR] == constants.INSTANCE_REBOOT_ALLOWED:
|
683 | 990ade2d | Stephen Shirley | config.write("on_reboot = 'restart'\n")
|
684 | 990ade2d | Stephen Shirley | else:
|
685 | 990ade2d | Stephen Shirley | config.write("on_reboot = 'destroy'\n")
|
686 | 65a6f9b7 | Michael Hanselmann | config.write("on_crash = 'restart'\n")
|
687 | 07813a9e | Iustin Pop | config.write("extra = '%s'\n" % hvp[constants.HV_KERNEL_ARGS])
|
688 | 65a6f9b7 | Michael Hanselmann | # just in case it exists
|
689 | 65a6f9b7 | Michael Hanselmann | utils.RemoveFile("/etc/xen/auto/%s" % instance.name)
|
690 | 65a6f9b7 | Michael Hanselmann | try:
|
691 | c2be2532 | Guido Trotter | utils.WriteFile(cls._ConfigFileName(instance.name), |
692 | c2be2532 | Guido Trotter | data=config.getvalue()) |
693 | 73cd67f4 | Guido Trotter | except EnvironmentError, err: |
694 | 73cd67f4 | Guido Trotter | raise errors.HypervisorError("Cannot write Xen instance confile" |
695 | c2be2532 | Guido Trotter | " file %s: %s" %
|
696 | c2be2532 | Guido Trotter | (cls._ConfigFileName(instance.name), err)) |
697 | 73cd67f4 | Guido Trotter | |
698 | 65a6f9b7 | Michael Hanselmann | return True |
699 | 65a6f9b7 | Michael Hanselmann | |
700 | 65a6f9b7 | Michael Hanselmann | |
701 | 65a6f9b7 | Michael Hanselmann | class XenHvmHypervisor(XenHypervisor): |
702 | 65a6f9b7 | Michael Hanselmann | """Xen HVM hypervisor interface"""
|
703 | 65a6f9b7 | Michael Hanselmann | |
704 | 69b99987 | Michael Hanselmann | ANCILLARY_FILES = XenHypervisor.ANCILLARY_FILES + [ |
705 | 69b99987 | Michael Hanselmann | constants.VNC_PASSWORD_FILE, |
706 | 69b99987 | Michael Hanselmann | ] |
707 | 69ab2e12 | Guido Trotter | ANCILLARY_FILES_OPT = XenHypervisor.ANCILLARY_FILES_OPT + [ |
708 | 69ab2e12 | Guido Trotter | constants.VNC_PASSWORD_FILE, |
709 | 69ab2e12 | Guido Trotter | ] |
710 | 3680f662 | Guido Trotter | |
711 | 205ab586 | Iustin Pop | PARAMETERS = { |
712 | 205ab586 | Iustin Pop | constants.HV_ACPI: hv_base.NO_CHECK, |
713 | 016d04b3 | Michael Hanselmann | constants.HV_BOOT_ORDER: (True, ) +
|
714 | 016d04b3 | Michael Hanselmann | (lambda x: x and len(x.strip("acdn")) == 0, |
715 | 016d04b3 | Michael Hanselmann | "Invalid boot order specified, must be one or more of [acdn]",
|
716 | 016d04b3 | Michael Hanselmann | None, None), |
717 | 205ab586 | Iustin Pop | constants.HV_CDROM_IMAGE_PATH: hv_base.OPT_FILE_CHECK, |
718 | 016d04b3 | Michael Hanselmann | constants.HV_DISK_TYPE: |
719 | 016d04b3 | Michael Hanselmann | hv_base.ParamInSet(True, constants.HT_HVM_VALID_DISK_TYPES),
|
720 | 016d04b3 | Michael Hanselmann | constants.HV_NIC_TYPE: |
721 | 016d04b3 | Michael Hanselmann | hv_base.ParamInSet(True, constants.HT_HVM_VALID_NIC_TYPES),
|
722 | 205ab586 | Iustin Pop | constants.HV_PAE: hv_base.NO_CHECK, |
723 | 016d04b3 | Michael Hanselmann | constants.HV_VNC_BIND_ADDRESS: |
724 | 8b312c1d | Manuel Franceschini | (False, netutils.IP4Address.IsValid,
|
725 | 016d04b3 | Michael Hanselmann | "VNC bind address is not a valid IP address", None, None), |
726 | 205ab586 | Iustin Pop | constants.HV_KERNEL_PATH: hv_base.REQ_FILE_CHECK, |
727 | 205ab586 | Iustin Pop | constants.HV_DEVICE_MODEL: hv_base.REQ_FILE_CHECK, |
728 | 6e6bb8d5 | Guido Trotter | constants.HV_VNC_PASSWORD_FILE: hv_base.REQ_FILE_CHECK, |
729 | e2d14329 | Andrea Spadaccini | constants.HV_MIGRATION_PORT: hv_base.REQ_NET_PORT_CHECK, |
730 | 783a6c0b | Iustin Pop | constants.HV_MIGRATION_MODE: hv_base.MIGRATION_MODE_CHECK, |
731 | 6b970cef | Jun Futagawa | constants.HV_USE_LOCALTIME: hv_base.NO_CHECK, |
732 | e695efbf | Iustin Pop | # TODO: Add a check for the blockdev prefix (matching [a-z:] or similar).
|
733 | e695efbf | Iustin Pop | constants.HV_BLOCKDEV_PREFIX: hv_base.NO_CHECK, |
734 | 990ade2d | Stephen Shirley | constants.HV_REBOOT_BEHAVIOR: |
735 | c4708267 | Tsachy Shacham | hv_base.ParamInSet(True, constants.REBOOT_BEHAVIORS),
|
736 | c4708267 | Tsachy Shacham | constants.HV_CPU_MASK: hv_base.OPT_MULTI_CPU_MASK_CHECK, |
737 | 205ab586 | Iustin Pop | } |
738 | 09ea8710 | Iustin Pop | |
739 | 65a6f9b7 | Michael Hanselmann | @classmethod
|
740 | 61eb1a46 | Guido Trotter | def _WriteConfigFile(cls, instance, startup_memory, block_devices): |
741 | 65a6f9b7 | Michael Hanselmann | """Create a Xen 3.1 HVM config file.
|
742 | 65a6f9b7 | Michael Hanselmann |
|
743 | 65a6f9b7 | Michael Hanselmann | """
|
744 | a985b417 | Iustin Pop | hvp = instance.hvparams |
745 | a985b417 | Iustin Pop | |
746 | 65a6f9b7 | Michael Hanselmann | config = StringIO() |
747 | 65a6f9b7 | Michael Hanselmann | config.write("# this is autogenerated by Ganeti, please do not edit\n#\n")
|
748 | e2ee1cea | Iustin Pop | |
749 | e2ee1cea | Iustin Pop | # kernel handling
|
750 | e2ee1cea | Iustin Pop | kpath = hvp[constants.HV_KERNEL_PATH] |
751 | e2ee1cea | Iustin Pop | config.write("kernel = '%s'\n" % kpath)
|
752 | e2ee1cea | Iustin Pop | |
753 | 65a6f9b7 | Michael Hanselmann | config.write("builder = 'hvm'\n")
|
754 | 61eb1a46 | Guido Trotter | config.write("memory = %d\n" % startup_memory)
|
755 | 80121c83 | Guido Trotter | config.write("maxmem = %d\n" % instance.beparams[constants.BE_MAXMEM])
|
756 | 8b3fd458 | Iustin Pop | config.write("vcpus = %d\n" % instance.beparams[constants.BE_VCPUS])
|
757 | c4708267 | Tsachy Shacham | cpu_pinning = cls._CreateConfigCpus(hvp[constants.HV_CPU_MASK]) |
758 | c4708267 | Tsachy Shacham | if cpu_pinning:
|
759 | c4708267 | Tsachy Shacham | config.write("%s\n" % cpu_pinning)
|
760 | c4708267 | Tsachy Shacham | |
761 | 65a6f9b7 | Michael Hanselmann | config.write("name = '%s'\n" % instance.name)
|
762 | 09ea8710 | Iustin Pop | if hvp[constants.HV_PAE]:
|
763 | a21dda8b | Iustin Pop | config.write("pae = 1\n")
|
764 | a21dda8b | Iustin Pop | else:
|
765 | a21dda8b | Iustin Pop | config.write("pae = 0\n")
|
766 | 09ea8710 | Iustin Pop | if hvp[constants.HV_ACPI]:
|
767 | a21dda8b | Iustin Pop | config.write("acpi = 1\n")
|
768 | a21dda8b | Iustin Pop | else:
|
769 | a21dda8b | Iustin Pop | config.write("acpi = 0\n")
|
770 | 65a6f9b7 | Michael Hanselmann | config.write("apic = 1\n")
|
771 | 09ea8710 | Iustin Pop | config.write("device_model = '%s'\n" % hvp[constants.HV_DEVICE_MODEL])
|
772 | a985b417 | Iustin Pop | config.write("boot = '%s'\n" % hvp[constants.HV_BOOT_ORDER])
|
773 | 65a6f9b7 | Michael Hanselmann | config.write("sdl = 0\n")
|
774 | 97efde45 | Guido Trotter | config.write("usb = 1\n")
|
775 | 97efde45 | Guido Trotter | config.write("usbdevice = 'tablet'\n")
|
776 | 65a6f9b7 | Michael Hanselmann | config.write("vnc = 1\n")
|
777 | a985b417 | Iustin Pop | if hvp[constants.HV_VNC_BIND_ADDRESS] is None: |
778 | d0c11cf7 | Alexander Schreiber | config.write("vnclisten = '%s'\n" % constants.VNC_DEFAULT_BIND_ADDRESS)
|
779 | d0c11cf7 | Alexander Schreiber | else:
|
780 | 6b405598 | Guido Trotter | config.write("vnclisten = '%s'\n" % hvp[constants.HV_VNC_BIND_ADDRESS])
|
781 | 65a6f9b7 | Michael Hanselmann | |
782 | 377d74c9 | Guido Trotter | if instance.network_port > constants.VNC_BASE_PORT:
|
783 | 377d74c9 | Guido Trotter | display = instance.network_port - constants.VNC_BASE_PORT |
784 | 65a6f9b7 | Michael Hanselmann | config.write("vncdisplay = %s\n" % display)
|
785 | 65a6f9b7 | Michael Hanselmann | config.write("vncunused = 0\n")
|
786 | 65a6f9b7 | Michael Hanselmann | else:
|
787 | 65a6f9b7 | Michael Hanselmann | config.write("# vncdisplay = 1\n")
|
788 | 65a6f9b7 | Michael Hanselmann | config.write("vncunused = 1\n")
|
789 | 65a6f9b7 | Michael Hanselmann | |
790 | 6e6bb8d5 | Guido Trotter | vnc_pwd_file = hvp[constants.HV_VNC_PASSWORD_FILE] |
791 | 65a6f9b7 | Michael Hanselmann | try:
|
792 | 6e6bb8d5 | Guido Trotter | password = utils.ReadFile(vnc_pwd_file) |
793 | 78f66a17 | Guido Trotter | except EnvironmentError, err: |
794 | 78f66a17 | Guido Trotter | raise errors.HypervisorError("Failed to open VNC password file %s: %s" % |
795 | 6e6bb8d5 | Guido Trotter | (vnc_pwd_file, err)) |
796 | 65a6f9b7 | Michael Hanselmann | |
797 | 65a6f9b7 | Michael Hanselmann | config.write("vncpasswd = '%s'\n" % password.rstrip())
|
798 | 65a6f9b7 | Michael Hanselmann | |
799 | 65a6f9b7 | Michael Hanselmann | config.write("serial = 'pty'\n")
|
800 | 6b970cef | Jun Futagawa | if hvp[constants.HV_USE_LOCALTIME]:
|
801 | 6b970cef | Jun Futagawa | config.write("localtime = 1\n")
|
802 | 65a6f9b7 | Michael Hanselmann | |
803 | 65a6f9b7 | Michael Hanselmann | vif_data = [] |
804 | a985b417 | Iustin Pop | nic_type = hvp[constants.HV_NIC_TYPE] |
805 | f48148c3 | Iustin Pop | if nic_type is None: |
806 | f48148c3 | Iustin Pop | # ensure old instances don't change
|
807 | f48148c3 | Iustin Pop | nic_type_str = ", type=ioemu"
|
808 | d08f6067 | Guido Trotter | elif nic_type == constants.HT_NIC_PARAVIRTUAL:
|
809 | f48148c3 | Iustin Pop | nic_type_str = ", type=paravirtualized"
|
810 | f48148c3 | Iustin Pop | else:
|
811 | f48148c3 | Iustin Pop | nic_type_str = ", model=%s, type=ioemu" % nic_type
|
812 | 65a6f9b7 | Michael Hanselmann | for nic in instance.nics: |
813 | 503b97a9 | Guido Trotter | nic_str = "mac=%s%s" % (nic.mac, nic_type_str)
|
814 | 65a6f9b7 | Michael Hanselmann | ip = getattr(nic, "ip", None) |
815 | 65a6f9b7 | Michael Hanselmann | if ip is not None: |
816 | 65a6f9b7 | Michael Hanselmann | nic_str += ", ip=%s" % ip
|
817 | 503b97a9 | Guido Trotter | if nic.nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
|
818 | 503b97a9 | Guido Trotter | nic_str += ", bridge=%s" % nic.nicparams[constants.NIC_LINK]
|
819 | 0183a697 | Alessandro Cincaglini | vif_data.append("'%s'" % nic_str)
|
820 | 65a6f9b7 | Michael Hanselmann | |
821 | 65a6f9b7 | Michael Hanselmann | config.write("vif = [%s]\n" % ",".join(vif_data)) |
822 | 525011bc | Maciej Bliziński | |
823 | 525011bc | Maciej Bliziński | disk_data = cls._GetConfigFileDiskData(block_devices, |
824 | 525011bc | Maciej Bliziński | hvp[constants.HV_BLOCKDEV_PREFIX]) |
825 | 525011bc | Maciej Bliziński | |
826 | a985b417 | Iustin Pop | iso_path = hvp[constants.HV_CDROM_IMAGE_PATH] |
827 | f48148c3 | Iustin Pop | if iso_path:
|
828 | f48148c3 | Iustin Pop | iso = "'file:%s,hdc:cdrom,r'" % iso_path
|
829 | a21dda8b | Iustin Pop | disk_data.append(iso) |
830 | a21dda8b | Iustin Pop | |
831 | a21dda8b | Iustin Pop | config.write("disk = [%s]\n" % (",".join(disk_data))) |
832 | a21dda8b | Iustin Pop | |
833 | 65a6f9b7 | Michael Hanselmann | config.write("on_poweroff = 'destroy'\n")
|
834 | 990ade2d | Stephen Shirley | if hvp[constants.HV_REBOOT_BEHAVIOR] == constants.INSTANCE_REBOOT_ALLOWED:
|
835 | 990ade2d | Stephen Shirley | config.write("on_reboot = 'restart'\n")
|
836 | 990ade2d | Stephen Shirley | else:
|
837 | 990ade2d | Stephen Shirley | config.write("on_reboot = 'destroy'\n")
|
838 | 65a6f9b7 | Michael Hanselmann | config.write("on_crash = 'restart'\n")
|
839 | 65a6f9b7 | Michael Hanselmann | # just in case it exists
|
840 | 65a6f9b7 | Michael Hanselmann | utils.RemoveFile("/etc/xen/auto/%s" % instance.name)
|
841 | 65a6f9b7 | Michael Hanselmann | try:
|
842 | c2be2532 | Guido Trotter | utils.WriteFile(cls._ConfigFileName(instance.name), |
843 | 73cd67f4 | Guido Trotter | data=config.getvalue()) |
844 | 73cd67f4 | Guido Trotter | except EnvironmentError, err: |
845 | 73cd67f4 | Guido Trotter | raise errors.HypervisorError("Cannot write Xen instance confile" |
846 | c2be2532 | Guido Trotter | " file %s: %s" %
|
847 | c2be2532 | Guido Trotter | (cls._ConfigFileName(instance.name), err)) |
848 | 73cd67f4 | Guido Trotter | |
849 | 65a6f9b7 | Michael Hanselmann | return True |