root / lib / hypervisor / hv_xen.py @ 364c350f
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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 | 1a63f285 | Iustin Pop | # Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 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 | d0bb3f24 | Michael Hanselmann | import string # pylint: disable=W0402 |
28 | 65a6f9b7 | Michael Hanselmann | from cStringIO import StringIO |
29 | 65a6f9b7 | Michael Hanselmann | |
30 | 65a6f9b7 | Michael Hanselmann | from ganeti import constants |
31 | 65a6f9b7 | Michael Hanselmann | from ganeti import errors |
32 | 65a6f9b7 | Michael Hanselmann | from ganeti import utils |
33 | a2d32034 | Michael Hanselmann | from ganeti.hypervisor import hv_base |
34 | a744b676 | Manuel Franceschini | from ganeti import netutils |
35 | 55cc0a44 | Michael Hanselmann | from ganeti import objects |
36 | 9d9bded1 | Michael Hanselmann | from ganeti import pathutils |
37 | 053c356a | Guido Trotter | from ganeti import ssconf |
38 | 65a6f9b7 | Michael Hanselmann | |
39 | 65a6f9b7 | Michael Hanselmann | |
40 | a8e8c0c6 | Michael Hanselmann | XEND_CONFIG_FILE = utils.PathJoin(pathutils.XEN_CONFIG_DIR, "xend-config.sxp")
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41 | a8e8c0c6 | Michael Hanselmann | XL_CONFIG_FILE = utils.PathJoin(pathutils.XEN_CONFIG_DIR, "xen/xl.conf")
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42 | a8e8c0c6 | Michael Hanselmann | VIF_BRIDGE_SCRIPT = utils.PathJoin(pathutils.XEN_CONFIG_DIR, |
43 | a8e8c0c6 | Michael Hanselmann | "scripts/vif-bridge")
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44 | 18bf85b1 | Michael Hanselmann | _DOM0_NAME = "Domain-0"
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45 | d0bb3f24 | Michael Hanselmann | _DISK_LETTERS = string.ascii_lowercase |
46 | d0bb3f24 | Michael Hanselmann | |
47 | d0bb3f24 | Michael Hanselmann | _FILE_DRIVER_MAP = { |
48 | d0bb3f24 | Michael Hanselmann | constants.FD_LOOP: "file",
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49 | d0bb3f24 | Michael Hanselmann | constants.FD_BLKTAP: "tap:aio",
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50 | d0bb3f24 | Michael Hanselmann | } |
51 | 22d568c2 | Guido Trotter | |
52 | 22d568c2 | Guido Trotter | |
53 | 347fa0f1 | Michael Hanselmann | def _CreateConfigCpus(cpu_mask): |
54 | 347fa0f1 | Michael Hanselmann | """Create a CPU config string for Xen's config file.
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55 | 347fa0f1 | Michael Hanselmann |
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56 | 347fa0f1 | Michael Hanselmann | """
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57 | 347fa0f1 | Michael Hanselmann | # Convert the string CPU mask to a list of list of int's
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58 | 347fa0f1 | Michael Hanselmann | cpu_list = utils.ParseMultiCpuMask(cpu_mask) |
59 | 347fa0f1 | Michael Hanselmann | |
60 | 347fa0f1 | Michael Hanselmann | if len(cpu_list) == 1: |
61 | 347fa0f1 | Michael Hanselmann | all_cpu_mapping = cpu_list[0]
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62 | 347fa0f1 | Michael Hanselmann | if all_cpu_mapping == constants.CPU_PINNING_OFF:
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63 | 347fa0f1 | Michael Hanselmann | # If CPU pinning has 1 entry that's "all", then remove the
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64 | 347fa0f1 | Michael Hanselmann | # parameter from the config file
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65 | 347fa0f1 | Michael Hanselmann | return None |
66 | 347fa0f1 | Michael Hanselmann | else:
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67 | 347fa0f1 | Michael Hanselmann | # If CPU pinning has one non-all entry, mapping all vCPUS (the entire
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68 | 347fa0f1 | Michael Hanselmann | # VM) to one physical CPU, using format 'cpu = "C"'
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69 | 347fa0f1 | Michael Hanselmann | return "cpu = \"%s\"" % ",".join(map(str, all_cpu_mapping)) |
70 | 347fa0f1 | Michael Hanselmann | else:
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71 | 347fa0f1 | Michael Hanselmann | |
72 | 347fa0f1 | Michael Hanselmann | def _GetCPUMap(vcpu): |
73 | 347fa0f1 | Michael Hanselmann | if vcpu[0] == constants.CPU_PINNING_ALL_VAL: |
74 | 347fa0f1 | Michael Hanselmann | cpu_map = constants.CPU_PINNING_ALL_XEN |
75 | 347fa0f1 | Michael Hanselmann | else:
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76 | 347fa0f1 | Michael Hanselmann | cpu_map = ",".join(map(str, vcpu)) |
77 | 347fa0f1 | Michael Hanselmann | return "\"%s\"" % cpu_map |
78 | 347fa0f1 | Michael Hanselmann | |
79 | 347fa0f1 | Michael Hanselmann | # build the result string in format 'cpus = [ "c", "c", "c" ]',
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80 | 347fa0f1 | Michael Hanselmann | # where each c is a physical CPU number, a range, a list, or any
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81 | 347fa0f1 | Michael Hanselmann | # combination
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82 | 347fa0f1 | Michael Hanselmann | return "cpus = [ %s ]" % ", ".join(map(_GetCPUMap, cpu_list)) |
83 | 347fa0f1 | Michael Hanselmann | |
84 | 347fa0f1 | Michael Hanselmann | |
85 | b255379d | Michael Hanselmann | def _RunXmList(fn, xmllist_errors): |
86 | b255379d | Michael Hanselmann | """Helper function for L{_GetXmList} to run "xm list".
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87 | b255379d | Michael Hanselmann |
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88 | b255379d | Michael Hanselmann | @type fn: callable
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89 | b255379d | Michael Hanselmann | @param fn: Function returning result of running C{xm list}
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90 | b255379d | Michael Hanselmann | @type xmllist_errors: list
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91 | b255379d | Michael Hanselmann | @param xmllist_errors: Error list
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92 | b255379d | Michael Hanselmann | @rtype: list
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93 | b255379d | Michael Hanselmann |
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94 | b255379d | Michael Hanselmann | """
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95 | b255379d | Michael Hanselmann | result = fn() |
96 | b255379d | Michael Hanselmann | if result.failed:
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97 | b255379d | Michael Hanselmann | logging.error("xm list failed (%s): %s", result.fail_reason,
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98 | b255379d | Michael Hanselmann | result.output) |
99 | b255379d | Michael Hanselmann | xmllist_errors.append(result) |
100 | b255379d | Michael Hanselmann | raise utils.RetryAgain()
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101 | b255379d | Michael Hanselmann | |
102 | b255379d | Michael Hanselmann | # skip over the heading
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103 | b255379d | Michael Hanselmann | return result.stdout.splitlines()
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104 | b255379d | Michael Hanselmann | |
105 | b255379d | Michael Hanselmann | |
106 | b255379d | Michael Hanselmann | def _ParseXmList(lines, include_node): |
107 | b255379d | Michael Hanselmann | """Parses the output of C{xm list}.
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108 | b255379d | Michael Hanselmann |
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109 | b255379d | Michael Hanselmann | @type lines: list
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110 | b255379d | Michael Hanselmann | @param lines: Output lines of C{xm list}
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111 | b255379d | Michael Hanselmann | @type include_node: boolean
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112 | b255379d | Michael Hanselmann | @param include_node: If True, return information for Dom0
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113 | b255379d | Michael Hanselmann | @return: list of tuple containing (name, id, memory, vcpus, state, time
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114 | b255379d | Michael Hanselmann | spent)
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115 | b255379d | Michael Hanselmann |
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116 | b255379d | Michael Hanselmann | """
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117 | b255379d | Michael Hanselmann | result = [] |
118 | b255379d | Michael Hanselmann | |
119 | b255379d | Michael Hanselmann | # Iterate through all lines while ignoring header
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120 | b255379d | Michael Hanselmann | for line in lines[1:]: |
121 | b255379d | Michael Hanselmann | # The format of lines is:
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122 | b255379d | Michael Hanselmann | # Name ID Mem(MiB) VCPUs State Time(s)
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123 | b255379d | Michael Hanselmann | # Domain-0 0 3418 4 r----- 266.2
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124 | b255379d | Michael Hanselmann | data = line.split() |
125 | b255379d | Michael Hanselmann | if len(data) != 6: |
126 | b255379d | Michael Hanselmann | raise errors.HypervisorError("Can't parse output of xm list," |
127 | b255379d | Michael Hanselmann | " line: %s" % line)
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128 | b255379d | Michael Hanselmann | try:
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129 | b255379d | Michael Hanselmann | data[1] = int(data[1]) |
130 | b255379d | Michael Hanselmann | data[2] = int(data[2]) |
131 | b255379d | Michael Hanselmann | data[3] = int(data[3]) |
132 | b255379d | Michael Hanselmann | data[5] = float(data[5]) |
133 | b255379d | Michael Hanselmann | except (TypeError, ValueError), err: |
134 | b255379d | Michael Hanselmann | raise errors.HypervisorError("Can't parse output of xm list," |
135 | b255379d | Michael Hanselmann | " line: %s, error: %s" % (line, err))
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136 | b255379d | Michael Hanselmann | |
137 | b255379d | Michael Hanselmann | # skip the Domain-0 (optional)
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138 | b255379d | Michael Hanselmann | if include_node or data[0] != _DOM0_NAME: |
139 | b255379d | Michael Hanselmann | result.append(data) |
140 | b255379d | Michael Hanselmann | |
141 | b255379d | Michael Hanselmann | return result
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142 | b255379d | Michael Hanselmann | |
143 | b255379d | Michael Hanselmann | |
144 | b255379d | Michael Hanselmann | def _GetXmList(fn, include_node, _timeout=5): |
145 | b255379d | Michael Hanselmann | """Return the list of running instances.
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146 | b255379d | Michael Hanselmann |
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147 | b255379d | Michael Hanselmann | See L{_RunXmList} and L{_ParseXmList} for parameter details.
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148 | b255379d | Michael Hanselmann |
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149 | b255379d | Michael Hanselmann | """
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150 | b255379d | Michael Hanselmann | xmllist_errors = [] |
151 | b255379d | Michael Hanselmann | try:
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152 | b255379d | Michael Hanselmann | lines = utils.Retry(_RunXmList, (0.3, 1.5, 1.0), _timeout, |
153 | b255379d | Michael Hanselmann | args=(fn, xmllist_errors)) |
154 | b255379d | Michael Hanselmann | except utils.RetryTimeout:
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155 | b255379d | Michael Hanselmann | if xmllist_errors:
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156 | b255379d | Michael Hanselmann | xmlist_result = xmllist_errors.pop() |
157 | b255379d | Michael Hanselmann | |
158 | b255379d | Michael Hanselmann | errmsg = ("xm list failed, timeout exceeded (%s): %s" %
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159 | b255379d | Michael Hanselmann | (xmlist_result.fail_reason, xmlist_result.output)) |
160 | b255379d | Michael Hanselmann | else:
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161 | b255379d | Michael Hanselmann | errmsg = "xm list failed"
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162 | b255379d | Michael Hanselmann | |
163 | b255379d | Michael Hanselmann | raise errors.HypervisorError(errmsg)
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164 | b255379d | Michael Hanselmann | |
165 | b255379d | Michael Hanselmann | return _ParseXmList(lines, include_node)
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166 | b255379d | Michael Hanselmann | |
167 | b255379d | Michael Hanselmann | |
168 | 364c350f | Jose A. Lopes | def _IsInstanceRunning(instance_info): |
169 | 364c350f | Jose A. Lopes | return instance_info == "r-----" \ |
170 | 364c350f | Jose A. Lopes | or instance_info == "-b----" |
171 | 364c350f | Jose A. Lopes | |
172 | 364c350f | Jose A. Lopes | |
173 | 364c350f | Jose A. Lopes | def _IsInstanceShutdown(instance_info): |
174 | 364c350f | Jose A. Lopes | return instance_info == "---s--" |
175 | 364c350f | Jose A. Lopes | |
176 | 364c350f | Jose A. Lopes | |
177 | 06c9a520 | Michael Hanselmann | def _ParseNodeInfo(info): |
178 | 06c9a520 | Michael Hanselmann | """Return information about the node.
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179 | 06c9a520 | Michael Hanselmann |
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180 | 06c9a520 | Michael Hanselmann | @return: a dict with the following keys (memory values in MiB):
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181 | 06c9a520 | Michael Hanselmann | - memory_total: the total memory size on the node
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182 | 06c9a520 | Michael Hanselmann | - memory_free: the available memory on the node for instances
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183 | 06c9a520 | Michael Hanselmann | - nr_cpus: total number of CPUs
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184 | 06c9a520 | Michael Hanselmann | - nr_nodes: in a NUMA system, the number of domains
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185 | 06c9a520 | Michael Hanselmann | - nr_sockets: the number of physical CPU sockets in the node
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186 | 06c9a520 | Michael Hanselmann | - hv_version: the hypervisor version in the form (major, minor)
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187 | 06c9a520 | Michael Hanselmann |
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188 | 06c9a520 | Michael Hanselmann | """
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189 | 06c9a520 | Michael Hanselmann | result = {} |
190 | 06c9a520 | Michael Hanselmann | cores_per_socket = threads_per_core = nr_cpus = None
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191 | 06c9a520 | Michael Hanselmann | xen_major, xen_minor = None, None |
192 | 06c9a520 | Michael Hanselmann | memory_total = None
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193 | 06c9a520 | Michael Hanselmann | memory_free = None
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194 | 06c9a520 | Michael Hanselmann | |
195 | 06c9a520 | Michael Hanselmann | for line in info.splitlines(): |
196 | 06c9a520 | Michael Hanselmann | fields = line.split(":", 1) |
197 | 06c9a520 | Michael Hanselmann | |
198 | 06c9a520 | Michael Hanselmann | if len(fields) < 2: |
199 | 06c9a520 | Michael Hanselmann | continue
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200 | 06c9a520 | Michael Hanselmann | |
201 | 06c9a520 | Michael Hanselmann | (key, val) = map(lambda s: s.strip(), fields) |
202 | 06c9a520 | Michael Hanselmann | |
203 | 06c9a520 | Michael Hanselmann | # Note: in Xen 3, memory has changed to total_memory
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204 | 06c9a520 | Michael Hanselmann | if key in ("memory", "total_memory"): |
205 | 06c9a520 | Michael Hanselmann | memory_total = int(val)
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206 | 06c9a520 | Michael Hanselmann | elif key == "free_memory": |
207 | 06c9a520 | Michael Hanselmann | memory_free = int(val)
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208 | 06c9a520 | Michael Hanselmann | elif key == "nr_cpus": |
209 | 06c9a520 | Michael Hanselmann | nr_cpus = result["cpu_total"] = int(val) |
210 | 06c9a520 | Michael Hanselmann | elif key == "nr_nodes": |
211 | 06c9a520 | Michael Hanselmann | result["cpu_nodes"] = int(val) |
212 | 06c9a520 | Michael Hanselmann | elif key == "cores_per_socket": |
213 | 06c9a520 | Michael Hanselmann | cores_per_socket = int(val)
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214 | 06c9a520 | Michael Hanselmann | elif key == "threads_per_core": |
215 | 06c9a520 | Michael Hanselmann | threads_per_core = int(val)
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216 | 06c9a520 | Michael Hanselmann | elif key == "xen_major": |
217 | 06c9a520 | Michael Hanselmann | xen_major = int(val)
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218 | 06c9a520 | Michael Hanselmann | elif key == "xen_minor": |
219 | 06c9a520 | Michael Hanselmann | xen_minor = int(val)
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220 | 06c9a520 | Michael Hanselmann | |
221 | 06c9a520 | Michael Hanselmann | if None not in [cores_per_socket, threads_per_core, nr_cpus]: |
222 | 06c9a520 | Michael Hanselmann | result["cpu_sockets"] = nr_cpus / (cores_per_socket * threads_per_core)
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223 | 06c9a520 | Michael Hanselmann | |
224 | 06c9a520 | Michael Hanselmann | if memory_free is not None: |
225 | 06c9a520 | Michael Hanselmann | result["memory_free"] = memory_free
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226 | 06c9a520 | Michael Hanselmann | |
227 | 06c9a520 | Michael Hanselmann | if memory_total is not None: |
228 | 06c9a520 | Michael Hanselmann | result["memory_total"] = memory_total
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229 | 06c9a520 | Michael Hanselmann | |
230 | 06c9a520 | Michael Hanselmann | if not (xen_major is None or xen_minor is None): |
231 | 06c9a520 | Michael Hanselmann | result[constants.HV_NODEINFO_KEY_VERSION] = (xen_major, xen_minor) |
232 | 06c9a520 | Michael Hanselmann | |
233 | 06c9a520 | Michael Hanselmann | return result
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234 | 06c9a520 | Michael Hanselmann | |
235 | 06c9a520 | Michael Hanselmann | |
236 | 06c9a520 | Michael Hanselmann | def _MergeInstanceInfo(info, fn): |
237 | 06c9a520 | Michael Hanselmann | """Updates node information from L{_ParseNodeInfo} with instance info.
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238 | 06c9a520 | Michael Hanselmann |
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239 | 06c9a520 | Michael Hanselmann | @type info: dict
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240 | 06c9a520 | Michael Hanselmann | @param info: Result from L{_ParseNodeInfo}
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241 | 06c9a520 | Michael Hanselmann | @type fn: callable
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242 | 06c9a520 | Michael Hanselmann | @param fn: Function returning result of running C{xm list}
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243 | 06c9a520 | Michael Hanselmann | @rtype: dict
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244 | 06c9a520 | Michael Hanselmann |
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245 | 06c9a520 | Michael Hanselmann | """
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246 | 06c9a520 | Michael Hanselmann | total_instmem = 0
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247 | 06c9a520 | Michael Hanselmann | |
248 | 06c9a520 | Michael Hanselmann | for (name, _, mem, vcpus, _, _) in fn(True): |
249 | 06c9a520 | Michael Hanselmann | if name == _DOM0_NAME:
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250 | 06c9a520 | Michael Hanselmann | info["memory_dom0"] = mem
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251 | 06c9a520 | Michael Hanselmann | info["dom0_cpus"] = vcpus
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252 | 06c9a520 | Michael Hanselmann | |
253 | 06c9a520 | Michael Hanselmann | # Include Dom0 in total memory usage
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254 | 06c9a520 | Michael Hanselmann | total_instmem += mem |
255 | 06c9a520 | Michael Hanselmann | |
256 | 06c9a520 | Michael Hanselmann | memory_free = info.get("memory_free")
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257 | 06c9a520 | Michael Hanselmann | memory_total = info.get("memory_total")
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258 | 06c9a520 | Michael Hanselmann | |
259 | 06c9a520 | Michael Hanselmann | # Calculate memory used by hypervisor
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260 | 06c9a520 | Michael Hanselmann | if None not in [memory_total, memory_free, total_instmem]: |
261 | 06c9a520 | Michael Hanselmann | info["memory_hv"] = memory_total - memory_free - total_instmem
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262 | 06c9a520 | Michael Hanselmann | |
263 | 06c9a520 | Michael Hanselmann | return info
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264 | 06c9a520 | Michael Hanselmann | |
265 | 06c9a520 | Michael Hanselmann | |
266 | 06c9a520 | Michael Hanselmann | def _GetNodeInfo(info, fn): |
267 | 06c9a520 | Michael Hanselmann | """Combines L{_MergeInstanceInfo} and L{_ParseNodeInfo}.
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268 | 06c9a520 | Michael Hanselmann |
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269 | 06c9a520 | Michael Hanselmann | """
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270 | 06c9a520 | Michael Hanselmann | return _MergeInstanceInfo(_ParseNodeInfo(info), fn)
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271 | 06c9a520 | Michael Hanselmann | |
272 | 06c9a520 | Michael Hanselmann | |
273 | d0bb3f24 | Michael Hanselmann | def _GetConfigFileDiskData(block_devices, blockdev_prefix, |
274 | d0bb3f24 | Michael Hanselmann | _letters=_DISK_LETTERS): |
275 | d0bb3f24 | Michael Hanselmann | """Get disk directives for Xen config file.
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276 | d0bb3f24 | Michael Hanselmann |
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277 | d0bb3f24 | Michael Hanselmann | This method builds the xen config disk directive according to the
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278 | d0bb3f24 | Michael Hanselmann | given disk_template and block_devices.
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279 | d0bb3f24 | Michael Hanselmann |
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280 | d0bb3f24 | Michael Hanselmann | @param block_devices: list of tuples (cfdev, rldev):
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281 | d0bb3f24 | Michael Hanselmann | - cfdev: dict containing ganeti config disk part
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282 | d0bb3f24 | Michael Hanselmann | - rldev: ganeti.bdev.BlockDev object
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283 | d0bb3f24 | Michael Hanselmann | @param blockdev_prefix: a string containing blockdevice prefix,
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284 | d0bb3f24 | Michael Hanselmann | e.g. "sd" for /dev/sda
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285 | d0bb3f24 | Michael Hanselmann |
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286 | d0bb3f24 | Michael Hanselmann | @return: string containing disk directive for xen instance config file
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287 | d0bb3f24 | Michael Hanselmann |
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288 | d0bb3f24 | Michael Hanselmann | """
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289 | d0bb3f24 | Michael Hanselmann | if len(block_devices) > len(_letters): |
290 | d0bb3f24 | Michael Hanselmann | raise errors.HypervisorError("Too many disks") |
291 | d0bb3f24 | Michael Hanselmann | |
292 | d0bb3f24 | Michael Hanselmann | disk_data = [] |
293 | d0bb3f24 | Michael Hanselmann | |
294 | d0bb3f24 | Michael Hanselmann | for sd_suffix, (cfdev, dev_path) in zip(_letters, block_devices): |
295 | d0bb3f24 | Michael Hanselmann | sd_name = blockdev_prefix + sd_suffix |
296 | d0bb3f24 | Michael Hanselmann | |
297 | d0bb3f24 | Michael Hanselmann | if cfdev.mode == constants.DISK_RDWR:
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298 | d0bb3f24 | Michael Hanselmann | mode = "w"
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299 | d0bb3f24 | Michael Hanselmann | else:
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300 | d0bb3f24 | Michael Hanselmann | mode = "r"
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301 | d0bb3f24 | Michael Hanselmann | |
302 | d0bb3f24 | Michael Hanselmann | if cfdev.dev_type == constants.LD_FILE:
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303 | d0bb3f24 | Michael Hanselmann | driver = _FILE_DRIVER_MAP[cfdev.physical_id[0]]
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304 | d0bb3f24 | Michael Hanselmann | else:
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305 | d0bb3f24 | Michael Hanselmann | driver = "phy"
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306 | d0bb3f24 | Michael Hanselmann | |
307 | d0bb3f24 | Michael Hanselmann | disk_data.append("'%s:%s,%s,%s'" % (driver, dev_path, sd_name, mode))
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308 | d0bb3f24 | Michael Hanselmann | |
309 | d0bb3f24 | Michael Hanselmann | return disk_data
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310 | d0bb3f24 | Michael Hanselmann | |
311 | d0bb3f24 | Michael Hanselmann | |
312 | a2d32034 | Michael Hanselmann | class XenHypervisor(hv_base.BaseHypervisor): |
313 | 65a6f9b7 | Michael Hanselmann | """Xen generic hypervisor interface
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314 | 65a6f9b7 | Michael Hanselmann |
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315 | 65a6f9b7 | Michael Hanselmann | This is the Xen base class used for both Xen PVM and HVM. It contains
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316 | 65a6f9b7 | Michael Hanselmann | all the functionality that is identical for both.
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317 | 65a6f9b7 | Michael Hanselmann |
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318 | 65a6f9b7 | Michael Hanselmann | """
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319 | d271c6fd | Iustin Pop | CAN_MIGRATE = True
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320 | 7dd106d3 | Iustin Pop | REBOOT_RETRY_COUNT = 60
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321 | 7dd106d3 | Iustin Pop | REBOOT_RETRY_INTERVAL = 10
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322 | 65a6f9b7 | Michael Hanselmann | |
323 | 3680f662 | Guido Trotter | ANCILLARY_FILES = [ |
324 | 22d568c2 | Guido Trotter | XEND_CONFIG_FILE, |
325 | 22d568c2 | Guido Trotter | XL_CONFIG_FILE, |
326 | 22d568c2 | Guido Trotter | VIF_BRIDGE_SCRIPT, |
327 | 3680f662 | Guido Trotter | ] |
328 | 69ab2e12 | Guido Trotter | ANCILLARY_FILES_OPT = [ |
329 | 69ab2e12 | Guido Trotter | XL_CONFIG_FILE, |
330 | 3680f662 | Guido Trotter | ] |
331 | 3680f662 | Guido Trotter | |
332 | 3d942d8b | Michael Hanselmann | def __init__(self, _cfgdir=None, _run_cmd_fn=None, _cmd=None): |
333 | 0a903309 | Michael Hanselmann | hv_base.BaseHypervisor.__init__(self)
|
334 | 0a903309 | Michael Hanselmann | |
335 | 0a903309 | Michael Hanselmann | if _cfgdir is None: |
336 | 0a903309 | Michael Hanselmann | self._cfgdir = pathutils.XEN_CONFIG_DIR
|
337 | 0a903309 | Michael Hanselmann | else:
|
338 | 0a903309 | Michael Hanselmann | self._cfgdir = _cfgdir
|
339 | 0a903309 | Michael Hanselmann | |
340 | 3d942d8b | Michael Hanselmann | if _run_cmd_fn is None: |
341 | 3d942d8b | Michael Hanselmann | self._run_cmd_fn = utils.RunCmd
|
342 | 3d942d8b | Michael Hanselmann | else:
|
343 | 3d942d8b | Michael Hanselmann | self._run_cmd_fn = _run_cmd_fn
|
344 | 3d942d8b | Michael Hanselmann | |
345 | 3d942d8b | Michael Hanselmann | self._cmd = _cmd
|
346 | 3d942d8b | Michael Hanselmann | |
347 | 3d942d8b | Michael Hanselmann | def _GetCommand(self): |
348 | d8784f7d | Michael Hanselmann | """Returns Xen command to use.
|
349 | d8784f7d | Michael Hanselmann |
|
350 | d8784f7d | Michael Hanselmann | """
|
351 | 3d942d8b | Michael Hanselmann | if self._cmd is None: |
352 | 3d942d8b | Michael Hanselmann | # TODO: Make command a hypervisor parameter
|
353 | 3d942d8b | Michael Hanselmann | cmd = constants.XEN_CMD |
354 | 3d942d8b | Michael Hanselmann | else:
|
355 | 3d942d8b | Michael Hanselmann | cmd = self._cmd
|
356 | 3d942d8b | Michael Hanselmann | |
357 | 3d942d8b | Michael Hanselmann | if cmd not in constants.KNOWN_XEN_COMMANDS: |
358 | 3d942d8b | Michael Hanselmann | raise errors.ProgrammerError("Unknown Xen command '%s'" % cmd) |
359 | 3d942d8b | Michael Hanselmann | |
360 | 3d942d8b | Michael Hanselmann | return cmd
|
361 | 3d942d8b | Michael Hanselmann | |
362 | 3d942d8b | Michael Hanselmann | def _RunXen(self, args): |
363 | 81124130 | Michael Hanselmann | """Wrapper around L{utils.process.RunCmd} to run Xen command.
|
364 | 3d942d8b | Michael Hanselmann |
|
365 | 81124130 | Michael Hanselmann | @see: L{utils.process.RunCmd}
|
366 | 3d942d8b | Michael Hanselmann |
|
367 | 3d942d8b | Michael Hanselmann | """
|
368 | 3d942d8b | Michael Hanselmann | cmd = [self._GetCommand()]
|
369 | 3d942d8b | Michael Hanselmann | cmd.extend(args) |
370 | 3d942d8b | Michael Hanselmann | |
371 | 3d942d8b | Michael Hanselmann | return self._run_cmd_fn(cmd) |
372 | 3d942d8b | Michael Hanselmann | |
373 | 0a903309 | Michael Hanselmann | def _ConfigFileName(self, instance_name): |
374 | c2be2532 | Guido Trotter | """Get the config file name for an instance.
|
375 | c2be2532 | Guido Trotter |
|
376 | c2be2532 | Guido Trotter | @param instance_name: instance name
|
377 | c2be2532 | Guido Trotter | @type instance_name: str
|
378 | c2be2532 | Guido Trotter | @return: fully qualified path to instance config file
|
379 | c2be2532 | Guido Trotter | @rtype: str
|
380 | c2be2532 | Guido Trotter |
|
381 | c2be2532 | Guido Trotter | """
|
382 | 0a903309 | Michael Hanselmann | return utils.PathJoin(self._cfgdir, instance_name) |
383 | c2be2532 | Guido Trotter | |
384 | 5661b908 | Iustin Pop | @classmethod
|
385 | c3d839f5 | Michael Hanselmann | def _GetConfig(cls, instance, startup_memory, block_devices): |
386 | c3d839f5 | Michael Hanselmann | """Build Xen configuration for an instance.
|
387 | 65a6f9b7 | Michael Hanselmann |
|
388 | 65a6f9b7 | Michael Hanselmann | """
|
389 | 65a6f9b7 | Michael Hanselmann | raise NotImplementedError |
390 | 65a6f9b7 | Michael Hanselmann | |
391 | c3d839f5 | Michael Hanselmann | def _WriteConfigFile(self, instance_name, data): |
392 | 4390ccff | Guido Trotter | """Write the Xen config file for the instance.
|
393 | 4390ccff | Guido Trotter |
|
394 | 4390ccff | Guido Trotter | This version of the function just writes the config file from static data.
|
395 | 4390ccff | Guido Trotter |
|
396 | 4390ccff | Guido Trotter | """
|
397 | 1a63f285 | Iustin Pop | # just in case it exists
|
398 | 0a903309 | Michael Hanselmann | utils.RemoveFile(utils.PathJoin(self._cfgdir, "auto", instance_name)) |
399 | a8e8c0c6 | Michael Hanselmann | |
400 | 0a903309 | Michael Hanselmann | cfg_file = self._ConfigFileName(instance_name)
|
401 | 1a63f285 | Iustin Pop | try:
|
402 | 1a63f285 | Iustin Pop | utils.WriteFile(cfg_file, data=data) |
403 | 1a63f285 | Iustin Pop | except EnvironmentError, err: |
404 | 1a63f285 | Iustin Pop | raise errors.HypervisorError("Cannot write Xen instance configuration" |
405 | 1a63f285 | Iustin Pop | " file %s: %s" % (cfg_file, err))
|
406 | 4390ccff | Guido Trotter | |
407 | 0a903309 | Michael Hanselmann | def _ReadConfigFile(self, instance_name): |
408 | 4390ccff | Guido Trotter | """Returns the contents of the instance config file.
|
409 | 4390ccff | Guido Trotter |
|
410 | 4390ccff | Guido Trotter | """
|
411 | 0a903309 | Michael Hanselmann | filename = self._ConfigFileName(instance_name)
|
412 | 76c364d9 | Michael Hanselmann | |
413 | 4390ccff | Guido Trotter | try:
|
414 | 76c364d9 | Michael Hanselmann | file_content = utils.ReadFile(filename) |
415 | 4390ccff | Guido Trotter | except EnvironmentError, err: |
416 | 4390ccff | Guido Trotter | raise errors.HypervisorError("Failed to load Xen config file: %s" % err) |
417 | 76c364d9 | Michael Hanselmann | |
418 | 4390ccff | Guido Trotter | return file_content
|
419 | 4390ccff | Guido Trotter | |
420 | 0a903309 | Michael Hanselmann | def _RemoveConfigFile(self, instance_name): |
421 | 65a6f9b7 | Michael Hanselmann | """Remove the xen configuration file.
|
422 | 65a6f9b7 | Michael Hanselmann |
|
423 | 65a6f9b7 | Michael Hanselmann | """
|
424 | 0a903309 | Michael Hanselmann | utils.RemoveFile(self._ConfigFileName(instance_name))
|
425 | 65a6f9b7 | Michael Hanselmann | |
426 | 48bba9de | Balazs Lecz | def _StashConfigFile(self, instance_name): |
427 | 48bba9de | Balazs Lecz | """Move the Xen config file to the log directory and return its new path.
|
428 | 48bba9de | Balazs Lecz |
|
429 | 48bba9de | Balazs Lecz | """
|
430 | 48bba9de | Balazs Lecz | old_filename = self._ConfigFileName(instance_name)
|
431 | 48bba9de | Balazs Lecz | base = ("%s-%s" %
|
432 | 48bba9de | Balazs Lecz | (instance_name, utils.TimestampForFilename())) |
433 | 48bba9de | Balazs Lecz | new_filename = utils.PathJoin(pathutils.LOG_XEN_DIR, base) |
434 | 48bba9de | Balazs Lecz | utils.RenameFile(old_filename, new_filename) |
435 | 48bba9de | Balazs Lecz | return new_filename
|
436 | 48bba9de | Balazs Lecz | |
437 | 3d942d8b | Michael Hanselmann | def _GetXmList(self, include_node): |
438 | b255379d | Michael Hanselmann | """Wrapper around module level L{_GetXmList}.
|
439 | 06b78e8b | Michael Hanselmann |
|
440 | 06b78e8b | Michael Hanselmann | """
|
441 | 3d942d8b | Michael Hanselmann | return _GetXmList(lambda: self._RunXen(["list"]), include_node) |
442 | 65a6f9b7 | Michael Hanselmann | |
443 | 65a6f9b7 | Michael Hanselmann | def ListInstances(self): |
444 | 65a6f9b7 | Michael Hanselmann | """Get the list of running instances.
|
445 | 65a6f9b7 | Michael Hanselmann |
|
446 | 65a6f9b7 | Michael Hanselmann | """
|
447 | b255379d | Michael Hanselmann | xm_list = self._GetXmList(False) |
448 | 65a6f9b7 | Michael Hanselmann | names = [info[0] for info in xm_list] |
449 | 65a6f9b7 | Michael Hanselmann | return names
|
450 | 65a6f9b7 | Michael Hanselmann | |
451 | 65a6f9b7 | Michael Hanselmann | def GetInstanceInfo(self, instance_name): |
452 | 65a6f9b7 | Michael Hanselmann | """Get instance properties.
|
453 | 65a6f9b7 | Michael Hanselmann |
|
454 | c41eea6e | Iustin Pop | @param instance_name: the instance name
|
455 | c41eea6e | Iustin Pop |
|
456 | c41eea6e | Iustin Pop | @return: tuple (name, id, memory, vcpus, stat, times)
|
457 | 65a6f9b7 | Michael Hanselmann |
|
458 | 65a6f9b7 | Michael Hanselmann | """
|
459 | b255379d | Michael Hanselmann | xm_list = self._GetXmList(instance_name == _DOM0_NAME)
|
460 | 65a6f9b7 | Michael Hanselmann | result = None
|
461 | 65a6f9b7 | Michael Hanselmann | for data in xm_list: |
462 | 65a6f9b7 | Michael Hanselmann | if data[0] == instance_name: |
463 | 65a6f9b7 | Michael Hanselmann | result = data |
464 | 65a6f9b7 | Michael Hanselmann | break
|
465 | 65a6f9b7 | Michael Hanselmann | return result
|
466 | 65a6f9b7 | Michael Hanselmann | |
467 | 65a6f9b7 | Michael Hanselmann | def GetAllInstancesInfo(self): |
468 | 65a6f9b7 | Michael Hanselmann | """Get properties of all instances.
|
469 | 65a6f9b7 | Michael Hanselmann |
|
470 | c41eea6e | Iustin Pop | @return: list of tuples (name, id, memory, vcpus, stat, times)
|
471 | c41eea6e | Iustin Pop |
|
472 | 65a6f9b7 | Michael Hanselmann | """
|
473 | b255379d | Michael Hanselmann | xm_list = self._GetXmList(False) |
474 | 65a6f9b7 | Michael Hanselmann | return xm_list
|
475 | 65a6f9b7 | Michael Hanselmann | |
476 | c3d839f5 | Michael Hanselmann | def _MakeConfigFile(self, instance, startup_memory, block_devices): |
477 | c3d839f5 | Michael Hanselmann | """Gather configuration details and write to disk.
|
478 | c3d839f5 | Michael Hanselmann |
|
479 | c3d839f5 | Michael Hanselmann | See L{_GetConfig} for arguments.
|
480 | c3d839f5 | Michael Hanselmann |
|
481 | c3d839f5 | Michael Hanselmann | """
|
482 | c3d839f5 | Michael Hanselmann | buf = StringIO() |
483 | c3d839f5 | Michael Hanselmann | buf.write("# Automatically generated by Ganeti. Do not edit!\n")
|
484 | c3d839f5 | Michael Hanselmann | buf.write("\n")
|
485 | c3d839f5 | Michael Hanselmann | buf.write(self._GetConfig(instance, startup_memory, block_devices))
|
486 | c3d839f5 | Michael Hanselmann | buf.write("\n")
|
487 | c3d839f5 | Michael Hanselmann | |
488 | c3d839f5 | Michael Hanselmann | self._WriteConfigFile(instance.name, buf.getvalue())
|
489 | c3d839f5 | Michael Hanselmann | |
490 | 323f9095 | Stephen Shirley | def StartInstance(self, instance, block_devices, startup_paused): |
491 | c41eea6e | Iustin Pop | """Start an instance.
|
492 | c41eea6e | Iustin Pop |
|
493 | c41eea6e | Iustin Pop | """
|
494 | 61eb1a46 | Guido Trotter | startup_memory = self._InstanceStartupMemory(instance)
|
495 | c3d839f5 | Michael Hanselmann | |
496 | c3d839f5 | Michael Hanselmann | self._MakeConfigFile(instance, startup_memory, block_devices)
|
497 | c3d839f5 | Michael Hanselmann | |
498 | 3d942d8b | Michael Hanselmann | cmd = ["create"]
|
499 | 323f9095 | Stephen Shirley | if startup_paused:
|
500 | 3d942d8b | Michael Hanselmann | cmd.append("-p")
|
501 | 3d942d8b | Michael Hanselmann | cmd.append(self._ConfigFileName(instance.name))
|
502 | 65a6f9b7 | Michael Hanselmann | |
503 | 3d942d8b | Michael Hanselmann | result = self._RunXen(cmd)
|
504 | 65a6f9b7 | Michael Hanselmann | if result.failed:
|
505 | 48bba9de | Balazs Lecz | # Move the Xen configuration file to the log directory to avoid
|
506 | 48bba9de | Balazs Lecz | # leaving a stale config file behind.
|
507 | 48bba9de | Balazs Lecz | stashed_config = self._StashConfigFile(instance.name)
|
508 | 48bba9de | Balazs Lecz | raise errors.HypervisorError("Failed to start instance %s: %s (%s). Moved" |
509 | 48bba9de | Balazs Lecz | " config file to %s" %
|
510 | 65a6f9b7 | Michael Hanselmann | (instance.name, result.fail_reason, |
511 | 48bba9de | Balazs Lecz | result.output, stashed_config)) |
512 | 65a6f9b7 | Michael Hanselmann | |
513 | bbcf7ad0 | Iustin Pop | def StopInstance(self, instance, force=False, retry=False, name=None): |
514 | c41eea6e | Iustin Pop | """Stop an instance.
|
515 | c41eea6e | Iustin Pop |
|
516 | c41eea6e | Iustin Pop | """
|
517 | bbcf7ad0 | Iustin Pop | if name is None: |
518 | bbcf7ad0 | Iustin Pop | name = instance.name |
519 | 4b8b172d | Michael Hanselmann | |
520 | 31da5ab5 | Michael Hanselmann | return self._StopInstance(name, force) |
521 | 31da5ab5 | Michael Hanselmann | |
522 | 364c350f | Jose A. Lopes | def _ShutdownInstance(self, name): |
523 | 364c350f | Jose A. Lopes | """Shutdown an instance if the instance is running.
|
524 | 364c350f | Jose A. Lopes |
|
525 | 364c350f | Jose A. Lopes | @type name: string
|
526 | 364c350f | Jose A. Lopes | @param name: name of the instance to stop
|
527 | 364c350f | Jose A. Lopes |
|
528 | 364c350f | Jose A. Lopes | The '-w' flag waits for shutdown to complete which avoids the need
|
529 | 364c350f | Jose A. Lopes | to poll in the case where we want to destroy the domain
|
530 | 364c350f | Jose A. Lopes | immediately after shutdown.
|
531 | 364c350f | Jose A. Lopes |
|
532 | 364c350f | Jose A. Lopes | """
|
533 | 364c350f | Jose A. Lopes | instance_info = self.GetInstanceInfo(name)
|
534 | 364c350f | Jose A. Lopes | |
535 | 364c350f | Jose A. Lopes | if instance_info is None or _IsInstanceShutdown(instance_info[4]): |
536 | 364c350f | Jose A. Lopes | logging.info("Failed to shutdown instance %s, not running", name)
|
537 | 364c350f | Jose A. Lopes | return None |
538 | 364c350f | Jose A. Lopes | |
539 | 364c350f | Jose A. Lopes | return self._RunXen(["shutdown", "-w", name]) |
540 | 364c350f | Jose A. Lopes | |
541 | 364c350f | Jose A. Lopes | def _DestroyInstance(self, name): |
542 | 364c350f | Jose A. Lopes | """Destroy an instance if the instance if the instance exists.
|
543 | 364c350f | Jose A. Lopes |
|
544 | 364c350f | Jose A. Lopes | @type name: string
|
545 | 364c350f | Jose A. Lopes | @param name: name of the instance to destroy
|
546 | 364c350f | Jose A. Lopes |
|
547 | 364c350f | Jose A. Lopes | """
|
548 | 364c350f | Jose A. Lopes | instance_info = self.GetInstanceInfo(name)
|
549 | 364c350f | Jose A. Lopes | |
550 | 364c350f | Jose A. Lopes | if instance_info is None: |
551 | 364c350f | Jose A. Lopes | logging.info("Failed to destroy instance %s, does not exist", name)
|
552 | 364c350f | Jose A. Lopes | return None |
553 | 364c350f | Jose A. Lopes | |
554 | 364c350f | Jose A. Lopes | return self._RunXen(["destroy", name]) |
555 | 364c350f | Jose A. Lopes | |
556 | 31da5ab5 | Michael Hanselmann | def _StopInstance(self, name, force): |
557 | 31da5ab5 | Michael Hanselmann | """Stop an instance.
|
558 | 31da5ab5 | Michael Hanselmann |
|
559 | 364c350f | Jose A. Lopes | @type name: string
|
560 | 364c350f | Jose A. Lopes | @param name: name of the instance to destroy
|
561 | 364c350f | Jose A. Lopes |
|
562 | 364c350f | Jose A. Lopes | @type force: boolean
|
563 | 364c350f | Jose A. Lopes | @param force: whether to do a "hard" stop (destroy)
|
564 | 364c350f | Jose A. Lopes |
|
565 | 31da5ab5 | Michael Hanselmann | """
|
566 | 65a6f9b7 | Michael Hanselmann | if force:
|
567 | 364c350f | Jose A. Lopes | result = self._DestroyInstance(name)
|
568 | 65a6f9b7 | Michael Hanselmann | else:
|
569 | 364c350f | Jose A. Lopes | self._ShutdownInstance(name)
|
570 | 364c350f | Jose A. Lopes | result = self._DestroyInstance(name)
|
571 | 65a6f9b7 | Michael Hanselmann | |
572 | 364c350f | Jose A. Lopes | if result is not None and result.failed and \ |
573 | 364c350f | Jose A. Lopes | self.GetInstanceInfo(name) is not None: |
574 | 3213d3c8 | Iustin Pop | raise errors.HypervisorError("Failed to stop instance %s: %s, %s" % |
575 | bbcf7ad0 | Iustin Pop | (name, result.fail_reason, result.output)) |
576 | 65a6f9b7 | Michael Hanselmann | |
577 | 4b8b172d | Michael Hanselmann | # Remove configuration file if stopping/starting instance was successful
|
578 | 4b8b172d | Michael Hanselmann | self._RemoveConfigFile(name)
|
579 | 4b8b172d | Michael Hanselmann | |
580 | 65a6f9b7 | Michael Hanselmann | def RebootInstance(self, instance): |
581 | c41eea6e | Iustin Pop | """Reboot an instance.
|
582 | c41eea6e | Iustin Pop |
|
583 | c41eea6e | Iustin Pop | """
|
584 | 7dd106d3 | Iustin Pop | ini_info = self.GetInstanceInfo(instance.name)
|
585 | 65a6f9b7 | Michael Hanselmann | |
586 | e0561198 | Iustin Pop | if ini_info is None: |
587 | e0561198 | Iustin Pop | raise errors.HypervisorError("Failed to reboot instance %s," |
588 | e0561198 | Iustin Pop | " not running" % instance.name)
|
589 | e0561198 | Iustin Pop | |
590 | 3d942d8b | Michael Hanselmann | result = self._RunXen(["reboot", instance.name]) |
591 | 65a6f9b7 | Michael Hanselmann | if result.failed:
|
592 | 3213d3c8 | Iustin Pop | raise errors.HypervisorError("Failed to reboot instance %s: %s, %s" % |
593 | 3213d3c8 | Iustin Pop | (instance.name, result.fail_reason, |
594 | 3213d3c8 | Iustin Pop | result.output)) |
595 | 06b78e8b | Michael Hanselmann | |
596 | 06b78e8b | Michael Hanselmann | def _CheckInstance(): |
597 | 7dd106d3 | Iustin Pop | new_info = self.GetInstanceInfo(instance.name)
|
598 | 06b78e8b | Michael Hanselmann | |
599 | 06b78e8b | Michael Hanselmann | # check if the domain ID has changed or the run time has decreased
|
600 | e0561198 | Iustin Pop | if (new_info is not None and |
601 | e0561198 | Iustin Pop | (new_info[1] != ini_info[1] or new_info[5] < ini_info[5])): |
602 | 06b78e8b | Michael Hanselmann | return
|
603 | 7dd106d3 | Iustin Pop | |
604 | 06b78e8b | Michael Hanselmann | raise utils.RetryAgain()
|
605 | 06b78e8b | Michael Hanselmann | |
606 | 06b78e8b | Michael Hanselmann | try:
|
607 | 06b78e8b | Michael Hanselmann | utils.Retry(_CheckInstance, self.REBOOT_RETRY_INTERVAL,
|
608 | 06b78e8b | Michael Hanselmann | self.REBOOT_RETRY_INTERVAL * self.REBOOT_RETRY_COUNT) |
609 | 06b78e8b | Michael Hanselmann | except utils.RetryTimeout:
|
610 | 7dd106d3 | Iustin Pop | raise errors.HypervisorError("Failed to reboot instance %s: instance" |
611 | 7dd106d3 | Iustin Pop | " did not reboot in the expected interval" %
|
612 | 7dd106d3 | Iustin Pop | (instance.name, )) |
613 | 65a6f9b7 | Michael Hanselmann | |
614 | 2c7a0373 | Guido Trotter | def BalloonInstanceMemory(self, instance, mem): |
615 | 2c7a0373 | Guido Trotter | """Balloon an instance memory to a certain value.
|
616 | 2c7a0373 | Guido Trotter |
|
617 | 2c7a0373 | Guido Trotter | @type instance: L{objects.Instance}
|
618 | 2c7a0373 | Guido Trotter | @param instance: instance to be accepted
|
619 | 2c7a0373 | Guido Trotter | @type mem: int
|
620 | 2c7a0373 | Guido Trotter | @param mem: actual memory size to use for instance runtime
|
621 | 2c7a0373 | Guido Trotter |
|
622 | 2c7a0373 | Guido Trotter | """
|
623 | 3d942d8b | Michael Hanselmann | result = self._RunXen(["mem-set", instance.name, mem]) |
624 | 2c7a0373 | Guido Trotter | if result.failed:
|
625 | 2c7a0373 | Guido Trotter | raise errors.HypervisorError("Failed to balloon instance %s: %s (%s)" % |
626 | 2c7a0373 | Guido Trotter | (instance.name, result.fail_reason, |
627 | 2c7a0373 | Guido Trotter | result.output)) |
628 | 3d942d8b | Michael Hanselmann | |
629 | 3d942d8b | Michael Hanselmann | # Update configuration file
|
630 | 2c7a0373 | Guido Trotter | cmd = ["sed", "-ie", "s/^memory.*$/memory = %s/" % mem] |
631 | 0a903309 | Michael Hanselmann | cmd.append(self._ConfigFileName(instance.name))
|
632 | 3d942d8b | Michael Hanselmann | |
633 | 2c7a0373 | Guido Trotter | result = utils.RunCmd(cmd) |
634 | 2c7a0373 | Guido Trotter | if result.failed:
|
635 | 2c7a0373 | Guido Trotter | raise errors.HypervisorError("Failed to update memory for %s: %s (%s)" % |
636 | 2c7a0373 | Guido Trotter | (instance.name, result.fail_reason, |
637 | 2c7a0373 | Guido Trotter | result.output)) |
638 | 2c7a0373 | Guido Trotter | |
639 | 65a6f9b7 | Michael Hanselmann | def GetNodeInfo(self): |
640 | 65a6f9b7 | Michael Hanselmann | """Return information about the node.
|
641 | 65a6f9b7 | Michael Hanselmann |
|
642 | 06c9a520 | Michael Hanselmann | @see: L{_GetNodeInfo} and L{_ParseNodeInfo}
|
643 | 65a6f9b7 | Michael Hanselmann |
|
644 | 65a6f9b7 | Michael Hanselmann | """
|
645 | 3d942d8b | Michael Hanselmann | result = self._RunXen(["info"]) |
646 | 65a6f9b7 | Michael Hanselmann | if result.failed:
|
647 | b48909c8 | Iustin Pop | logging.error("Can't run 'xm info' (%s): %s", result.fail_reason,
|
648 | b48909c8 | Iustin Pop | result.output) |
649 | 65a6f9b7 | Michael Hanselmann | return None |
650 | 65a6f9b7 | Michael Hanselmann | |
651 | 06c9a520 | Michael Hanselmann | return _GetNodeInfo(result.stdout, self._GetXmList) |
652 | 65a6f9b7 | Michael Hanselmann | |
653 | 637ce7f9 | Guido Trotter | @classmethod
|
654 | 55cc0a44 | Michael Hanselmann | def GetInstanceConsole(cls, instance, hvparams, beparams): |
655 | 65a6f9b7 | Michael Hanselmann | """Return a command for connecting to the console of an instance.
|
656 | 65a6f9b7 | Michael Hanselmann |
|
657 | 65a6f9b7 | Michael Hanselmann | """
|
658 | 55cc0a44 | Michael Hanselmann | return objects.InstanceConsole(instance=instance.name,
|
659 | 55cc0a44 | Michael Hanselmann | kind=constants.CONS_SSH, |
660 | 55cc0a44 | Michael Hanselmann | host=instance.primary_node, |
661 | 052783ff | Michael Hanselmann | user=constants.SSH_CONSOLE_USER, |
662 | b9612abb | Iustin Pop | command=[pathutils.XEN_CONSOLE_WRAPPER, |
663 | 1f5557ca | Guido Trotter | constants.XEN_CMD, instance.name]) |
664 | 65a6f9b7 | Michael Hanselmann | |
665 | 65a6f9b7 | Michael Hanselmann | def Verify(self): |
666 | 65a6f9b7 | Michael Hanselmann | """Verify the hypervisor.
|
667 | 65a6f9b7 | Michael Hanselmann |
|
668 | 65a6f9b7 | Michael Hanselmann | For Xen, this verifies that the xend process is running.
|
669 | 65a6f9b7 | Michael Hanselmann |
|
670 | cd04dfd2 | Michael Hanselmann | @return: Problem description if something is wrong, C{None} otherwise
|
671 | cd04dfd2 | Michael Hanselmann |
|
672 | 65a6f9b7 | Michael Hanselmann | """
|
673 | 3d942d8b | Michael Hanselmann | result = self._RunXen(["info"]) |
674 | e3e66f02 | Michael Hanselmann | if result.failed:
|
675 | 3213d3c8 | Iustin Pop | return "'xm info' failed: %s, %s" % (result.fail_reason, result.output) |
676 | 65a6f9b7 | Michael Hanselmann | |
677 | cd04dfd2 | Michael Hanselmann | return None |
678 | cd04dfd2 | Michael Hanselmann | |
679 | 4390ccff | Guido Trotter | def MigrationInfo(self, instance): |
680 | 4390ccff | Guido Trotter | """Get instance information to perform a migration.
|
681 | 4390ccff | Guido Trotter |
|
682 | 4390ccff | Guido Trotter | @type instance: L{objects.Instance}
|
683 | 4390ccff | Guido Trotter | @param instance: instance to be migrated
|
684 | 4390ccff | Guido Trotter | @rtype: string
|
685 | 4390ccff | Guido Trotter | @return: content of the xen config file
|
686 | 4390ccff | Guido Trotter |
|
687 | 4390ccff | Guido Trotter | """
|
688 | 4390ccff | Guido Trotter | return self._ReadConfigFile(instance.name) |
689 | 4390ccff | Guido Trotter | |
690 | 4390ccff | Guido Trotter | def AcceptInstance(self, instance, info, target): |
691 | 4390ccff | Guido Trotter | """Prepare to accept an instance.
|
692 | 4390ccff | Guido Trotter |
|
693 | 4390ccff | Guido Trotter | @type instance: L{objects.Instance}
|
694 | 4390ccff | Guido Trotter | @param instance: instance to be accepted
|
695 | 4390ccff | Guido Trotter | @type info: string
|
696 | 4390ccff | Guido Trotter | @param info: content of the xen config file on the source node
|
697 | 4390ccff | Guido Trotter | @type target: string
|
698 | 4390ccff | Guido Trotter | @param target: target host (usually ip), on this node
|
699 | 4390ccff | Guido Trotter |
|
700 | 4390ccff | Guido Trotter | """
|
701 | 4390ccff | Guido Trotter | pass
|
702 | 4390ccff | Guido Trotter | |
703 | 60af751d | Andrea Spadaccini | def FinalizeMigrationDst(self, instance, info, success): |
704 | 4390ccff | Guido Trotter | """Finalize an instance migration.
|
705 | 4390ccff | Guido Trotter |
|
706 | 4390ccff | Guido Trotter | After a successful migration we write the xen config file.
|
707 | 4390ccff | Guido Trotter | We do nothing on a failure, as we did not change anything at accept time.
|
708 | 4390ccff | Guido Trotter |
|
709 | 4390ccff | Guido Trotter | @type instance: L{objects.Instance}
|
710 | fea922fa | Guido Trotter | @param instance: instance whose migration is being finalized
|
711 | 4390ccff | Guido Trotter | @type info: string
|
712 | 4390ccff | Guido Trotter | @param info: content of the xen config file on the source node
|
713 | 4390ccff | Guido Trotter | @type success: boolean
|
714 | 4390ccff | Guido Trotter | @param success: whether the migration was a success or a failure
|
715 | 4390ccff | Guido Trotter |
|
716 | 4390ccff | Guido Trotter | """
|
717 | 4390ccff | Guido Trotter | if success:
|
718 | c3d839f5 | Michael Hanselmann | self._WriteConfigFile(instance.name, info)
|
719 | 4390ccff | Guido Trotter | |
720 | 6e7275c0 | Iustin Pop | def MigrateInstance(self, instance, target, live): |
721 | 6e7275c0 | Iustin Pop | """Migrate an instance to a target node.
|
722 | 6e7275c0 | Iustin Pop |
|
723 | 6e7275c0 | Iustin Pop | The migration will not be attempted if the instance is not
|
724 | 6e7275c0 | Iustin Pop | currently running.
|
725 | 6e7275c0 | Iustin Pop |
|
726 | 58d38b02 | Iustin Pop | @type instance: L{objects.Instance}
|
727 | 58d38b02 | Iustin Pop | @param instance: the instance to be migrated
|
728 | fdf7f055 | Guido Trotter | @type target: string
|
729 | fdf7f055 | Guido Trotter | @param target: ip address of the target node
|
730 | fdf7f055 | Guido Trotter | @type live: boolean
|
731 | fdf7f055 | Guido Trotter | @param live: perform a live migration
|
732 | fdf7f055 | Guido Trotter |
|
733 | 6e7275c0 | Iustin Pop | """
|
734 | d8784f7d | Michael Hanselmann | port = instance.hvparams[constants.HV_MIGRATION_PORT] |
735 | d8784f7d | Michael Hanselmann | |
736 | d8784f7d | Michael Hanselmann | # TODO: Pass cluster name via RPC
|
737 | d8784f7d | Michael Hanselmann | cluster_name = ssconf.SimpleStore().GetClusterName() |
738 | d8784f7d | Michael Hanselmann | |
739 | d8784f7d | Michael Hanselmann | return self._MigrateInstance(cluster_name, instance.name, target, port, |
740 | d8784f7d | Michael Hanselmann | live) |
741 | d8784f7d | Michael Hanselmann | |
742 | d8784f7d | Michael Hanselmann | def _MigrateInstance(self, cluster_name, instance_name, target, port, live, |
743 | d8784f7d | Michael Hanselmann | _ping_fn=netutils.TcpPing): |
744 | d8784f7d | Michael Hanselmann | """Migrate an instance to a target node.
|
745 | d8784f7d | Michael Hanselmann |
|
746 | d8784f7d | Michael Hanselmann | @see: L{MigrateInstance} for details
|
747 | d8784f7d | Michael Hanselmann |
|
748 | d8784f7d | Michael Hanselmann | """
|
749 | d8784f7d | Michael Hanselmann | if self.GetInstanceInfo(instance_name) is None: |
750 | 6e7275c0 | Iustin Pop | raise errors.HypervisorError("Instance not running, cannot migrate") |
751 | 50716be0 | Iustin Pop | |
752 | d8784f7d | Michael Hanselmann | cmd = self._GetCommand()
|
753 | 50716be0 | Iustin Pop | |
754 | d8784f7d | Michael Hanselmann | if (cmd == constants.XEN_CMD_XM and |
755 | d8784f7d | Michael Hanselmann | not _ping_fn(target, port, live_port_needed=True)): |
756 | 50716be0 | Iustin Pop | raise errors.HypervisorError("Remote host %s not listening on port" |
757 | 50716be0 | Iustin Pop | " %s, cannot migrate" % (target, port))
|
758 | 50716be0 | Iustin Pop | |
759 | 3d942d8b | Michael Hanselmann | args = ["migrate"]
|
760 | 3d942d8b | Michael Hanselmann | |
761 | d8784f7d | Michael Hanselmann | if cmd == constants.XEN_CMD_XM:
|
762 | 0625d08f | René Nussbaumer | args.extend(["-p", "%d" % port]) |
763 | 0625d08f | René Nussbaumer | if live:
|
764 | 0625d08f | René Nussbaumer | args.append("-l")
|
765 | 3d942d8b | Michael Hanselmann | |
766 | d8784f7d | Michael Hanselmann | elif cmd == constants.XEN_CMD_XL:
|
767 | d8784f7d | Michael Hanselmann | args.extend([ |
768 | d8784f7d | Michael Hanselmann | "-s", constants.XL_SSH_CMD % cluster_name,
|
769 | d8784f7d | Michael Hanselmann | "-C", self._ConfigFileName(instance_name), |
770 | d8784f7d | Michael Hanselmann | ]) |
771 | 3d942d8b | Michael Hanselmann | |
772 | 0625d08f | René Nussbaumer | else:
|
773 | d8784f7d | Michael Hanselmann | raise errors.HypervisorError("Unsupported Xen command: %s" % self._cmd) |
774 | 0625d08f | René Nussbaumer | |
775 | d8784f7d | Michael Hanselmann | args.extend([instance_name, target]) |
776 | 3d942d8b | Michael Hanselmann | |
777 | 3d942d8b | Michael Hanselmann | result = self._RunXen(args)
|
778 | 6e7275c0 | Iustin Pop | if result.failed:
|
779 | 6e7275c0 | Iustin Pop | raise errors.HypervisorError("Failed to migrate instance %s: %s" % |
780 | d8784f7d | Michael Hanselmann | (instance_name, result.output)) |
781 | 60af751d | Andrea Spadaccini | |
782 | 60af751d | Andrea Spadaccini | def FinalizeMigrationSource(self, instance, success, live): |
783 | 60af751d | Andrea Spadaccini | """Finalize the instance migration on the source node.
|
784 | 60af751d | Andrea Spadaccini |
|
785 | 60af751d | Andrea Spadaccini | @type instance: L{objects.Instance}
|
786 | 60af751d | Andrea Spadaccini | @param instance: the instance that was migrated
|
787 | 60af751d | Andrea Spadaccini | @type success: bool
|
788 | 60af751d | Andrea Spadaccini | @param success: whether the migration succeeded or not
|
789 | 60af751d | Andrea Spadaccini | @type live: bool
|
790 | 60af751d | Andrea Spadaccini | @param live: whether the user requested a live migration or not
|
791 | 60af751d | Andrea Spadaccini |
|
792 | 60af751d | Andrea Spadaccini | """
|
793 | 60af751d | Andrea Spadaccini | # pylint: disable=W0613
|
794 | 60af751d | Andrea Spadaccini | if success:
|
795 | 60af751d | Andrea Spadaccini | # remove old xen file after migration succeeded
|
796 | 60af751d | Andrea Spadaccini | try:
|
797 | 60af751d | Andrea Spadaccini | self._RemoveConfigFile(instance.name)
|
798 | 60af751d | Andrea Spadaccini | except EnvironmentError: |
799 | 60af751d | Andrea Spadaccini | logging.exception("Failure while removing instance config file")
|
800 | 60af751d | Andrea Spadaccini | |
801 | 60af751d | Andrea Spadaccini | def GetMigrationStatus(self, instance): |
802 | 60af751d | Andrea Spadaccini | """Get the migration status
|
803 | 60af751d | Andrea Spadaccini |
|
804 | 60af751d | Andrea Spadaccini | As MigrateInstance for Xen is still blocking, if this method is called it
|
805 | 60af751d | Andrea Spadaccini | means that MigrateInstance has completed successfully. So we can safely
|
806 | 60af751d | Andrea Spadaccini | assume that the migration was successful and notify this fact to the client.
|
807 | 60af751d | Andrea Spadaccini |
|
808 | 60af751d | Andrea Spadaccini | @type instance: L{objects.Instance}
|
809 | 60af751d | Andrea Spadaccini | @param instance: the instance that is being migrated
|
810 | 60af751d | Andrea Spadaccini | @rtype: L{objects.MigrationStatus}
|
811 | 60af751d | Andrea Spadaccini | @return: the status of the current migration (one of
|
812 | 60af751d | Andrea Spadaccini | L{constants.HV_MIGRATION_VALID_STATUSES}), plus any additional
|
813 | 60af751d | Andrea Spadaccini | progress info that can be retrieved from the hypervisor
|
814 | 60af751d | Andrea Spadaccini |
|
815 | 60af751d | Andrea Spadaccini | """
|
816 | 60af751d | Andrea Spadaccini | return objects.MigrationStatus(status=constants.HV_MIGRATION_COMPLETED)
|
817 | 6e7275c0 | Iustin Pop | |
818 | f5118ade | Iustin Pop | @classmethod
|
819 | f5118ade | Iustin Pop | def PowercycleNode(cls): |
820 | f5118ade | Iustin Pop | """Xen-specific powercycle.
|
821 | f5118ade | Iustin Pop |
|
822 | f5118ade | Iustin Pop | This first does a Linux reboot (which triggers automatically a Xen
|
823 | f5118ade | Iustin Pop | reboot), and if that fails it tries to do a Xen reboot. The reason
|
824 | f5118ade | Iustin Pop | we don't try a Xen reboot first is that the xen reboot launches an
|
825 | f5118ade | Iustin Pop | external command which connects to the Xen hypervisor, and that
|
826 | f5118ade | Iustin Pop | won't work in case the root filesystem is broken and/or the xend
|
827 | f5118ade | Iustin Pop | daemon is not working.
|
828 | f5118ade | Iustin Pop |
|
829 | f5118ade | Iustin Pop | """
|
830 | f5118ade | Iustin Pop | try:
|
831 | f5118ade | Iustin Pop | cls.LinuxPowercycle() |
832 | f5118ade | Iustin Pop | finally:
|
833 | 2876c2d6 | Guido Trotter | utils.RunCmd([constants.XEN_CMD, "debug", "R"]) |
834 | f5118ade | Iustin Pop | |
835 | 65a6f9b7 | Michael Hanselmann | |
836 | 65a6f9b7 | Michael Hanselmann | class XenPvmHypervisor(XenHypervisor): |
837 | 65a6f9b7 | Michael Hanselmann | """Xen PVM hypervisor interface"""
|
838 | 65a6f9b7 | Michael Hanselmann | |
839 | 205ab586 | Iustin Pop | PARAMETERS = { |
840 | 2f2dbb4b | Jun Futagawa | constants.HV_USE_BOOTLOADER: hv_base.NO_CHECK, |
841 | 2f2dbb4b | Jun Futagawa | constants.HV_BOOTLOADER_PATH: hv_base.OPT_FILE_CHECK, |
842 | 2f2dbb4b | Jun Futagawa | constants.HV_BOOTLOADER_ARGS: hv_base.NO_CHECK, |
843 | 205ab586 | Iustin Pop | constants.HV_KERNEL_PATH: hv_base.REQ_FILE_CHECK, |
844 | 205ab586 | Iustin Pop | constants.HV_INITRD_PATH: hv_base.OPT_FILE_CHECK, |
845 | 7adf7814 | René Nussbaumer | constants.HV_ROOT_PATH: hv_base.NO_CHECK, |
846 | 205ab586 | Iustin Pop | constants.HV_KERNEL_ARGS: hv_base.NO_CHECK, |
847 | e2d14329 | Andrea Spadaccini | constants.HV_MIGRATION_PORT: hv_base.REQ_NET_PORT_CHECK, |
848 | 783a6c0b | Iustin Pop | constants.HV_MIGRATION_MODE: hv_base.MIGRATION_MODE_CHECK, |
849 | 525011bc | Maciej Bliziński | # TODO: Add a check for the blockdev prefix (matching [a-z:] or similar).
|
850 | 525011bc | Maciej Bliziński | constants.HV_BLOCKDEV_PREFIX: hv_base.NO_CHECK, |
851 | 990ade2d | Stephen Shirley | constants.HV_REBOOT_BEHAVIOR: |
852 | c4708267 | Tsachy Shacham | hv_base.ParamInSet(True, constants.REBOOT_BEHAVIORS),
|
853 | c4708267 | Tsachy Shacham | constants.HV_CPU_MASK: hv_base.OPT_MULTI_CPU_MASK_CHECK, |
854 | 2c368f28 | Guido Trotter | constants.HV_CPU_CAP: hv_base.OPT_NONNEGATIVE_INT_CHECK, |
855 | 8bd977e9 | Sébastien Bocahu | constants.HV_CPU_WEIGHT: |
856 | 8bd977e9 | Sébastien Bocahu | (False, lambda x: 0 < x < 65536, "invalid weight", None, None), |
857 | 205ab586 | Iustin Pop | } |
858 | f48148c3 | Iustin Pop | |
859 | c3d839f5 | Michael Hanselmann | def _GetConfig(self, instance, startup_memory, block_devices): |
860 | 65a6f9b7 | Michael Hanselmann | """Write the Xen config file for the instance.
|
861 | 65a6f9b7 | Michael Hanselmann |
|
862 | 65a6f9b7 | Michael Hanselmann | """
|
863 | a985b417 | Iustin Pop | hvp = instance.hvparams |
864 | 65a6f9b7 | Michael Hanselmann | config = StringIO() |
865 | 65a6f9b7 | Michael Hanselmann | config.write("# this is autogenerated by Ganeti, please do not edit\n#\n")
|
866 | 65a6f9b7 | Michael Hanselmann | |
867 | 2f2dbb4b | Jun Futagawa | # if bootloader is True, use bootloader instead of kernel and ramdisk
|
868 | 2f2dbb4b | Jun Futagawa | # parameters.
|
869 | 2f2dbb4b | Jun Futagawa | if hvp[constants.HV_USE_BOOTLOADER]:
|
870 | 2f2dbb4b | Jun Futagawa | # bootloader handling
|
871 | 2f2dbb4b | Jun Futagawa | bootloader_path = hvp[constants.HV_BOOTLOADER_PATH] |
872 | 2f2dbb4b | Jun Futagawa | if bootloader_path:
|
873 | 2f2dbb4b | Jun Futagawa | config.write("bootloader = '%s'\n" % bootloader_path)
|
874 | 2f2dbb4b | Jun Futagawa | else:
|
875 | 2f2dbb4b | Jun Futagawa | raise errors.HypervisorError("Bootloader enabled, but missing" |
876 | 2f2dbb4b | Jun Futagawa | " bootloader path")
|
877 | 65a6f9b7 | Michael Hanselmann | |
878 | 2f2dbb4b | Jun Futagawa | bootloader_args = hvp[constants.HV_BOOTLOADER_ARGS] |
879 | 2f2dbb4b | Jun Futagawa | if bootloader_args:
|
880 | 2f2dbb4b | Jun Futagawa | config.write("bootargs = '%s'\n" % bootloader_args)
|
881 | 2f2dbb4b | Jun Futagawa | else:
|
882 | 2f2dbb4b | Jun Futagawa | # kernel handling
|
883 | 2f2dbb4b | Jun Futagawa | kpath = hvp[constants.HV_KERNEL_PATH] |
884 | 2f2dbb4b | Jun Futagawa | config.write("kernel = '%s'\n" % kpath)
|
885 | 2f2dbb4b | Jun Futagawa | |
886 | 2f2dbb4b | Jun Futagawa | # initrd handling
|
887 | 2f2dbb4b | Jun Futagawa | initrd_path = hvp[constants.HV_INITRD_PATH] |
888 | 2f2dbb4b | Jun Futagawa | if initrd_path:
|
889 | 2f2dbb4b | Jun Futagawa | config.write("ramdisk = '%s'\n" % initrd_path)
|
890 | 65a6f9b7 | Michael Hanselmann | |
891 | 65a6f9b7 | Michael Hanselmann | # rest of the settings
|
892 | 61eb1a46 | Guido Trotter | config.write("memory = %d\n" % startup_memory)
|
893 | 80121c83 | Guido Trotter | config.write("maxmem = %d\n" % instance.beparams[constants.BE_MAXMEM])
|
894 | 8b3fd458 | Iustin Pop | config.write("vcpus = %d\n" % instance.beparams[constants.BE_VCPUS])
|
895 | 347fa0f1 | Michael Hanselmann | cpu_pinning = _CreateConfigCpus(hvp[constants.HV_CPU_MASK]) |
896 | c4708267 | Tsachy Shacham | if cpu_pinning:
|
897 | c4708267 | Tsachy Shacham | config.write("%s\n" % cpu_pinning)
|
898 | 8bd977e9 | Sébastien Bocahu | cpu_cap = hvp[constants.HV_CPU_CAP] |
899 | 8bd977e9 | Sébastien Bocahu | if cpu_cap:
|
900 | 8bd977e9 | Sébastien Bocahu | config.write("cpu_cap=%d\n" % cpu_cap)
|
901 | 8bd977e9 | Sébastien Bocahu | cpu_weight = hvp[constants.HV_CPU_WEIGHT] |
902 | 8bd977e9 | Sébastien Bocahu | if cpu_weight:
|
903 | 8bd977e9 | Sébastien Bocahu | config.write("cpu_weight=%d\n" % cpu_weight)
|
904 | c4708267 | Tsachy Shacham | |
905 | 65a6f9b7 | Michael Hanselmann | config.write("name = '%s'\n" % instance.name)
|
906 | 65a6f9b7 | Michael Hanselmann | |
907 | 65a6f9b7 | Michael Hanselmann | vif_data = [] |
908 | 65a6f9b7 | Michael Hanselmann | for nic in instance.nics: |
909 | 503b97a9 | Guido Trotter | nic_str = "mac=%s" % (nic.mac)
|
910 | 65a6f9b7 | Michael Hanselmann | ip = getattr(nic, "ip", None) |
911 | 65a6f9b7 | Michael Hanselmann | if ip is not None: |
912 | 65a6f9b7 | Michael Hanselmann | nic_str += ", ip=%s" % ip
|
913 | 503b97a9 | Guido Trotter | if nic.nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
|
914 | 503b97a9 | Guido Trotter | nic_str += ", bridge=%s" % nic.nicparams[constants.NIC_LINK]
|
915 | 0183a697 | Alessandro Cincaglini | vif_data.append("'%s'" % nic_str)
|
916 | 65a6f9b7 | Michael Hanselmann | |
917 | d0bb3f24 | Michael Hanselmann | disk_data = \ |
918 | d0bb3f24 | Michael Hanselmann | _GetConfigFileDiskData(block_devices, hvp[constants.HV_BLOCKDEV_PREFIX]) |
919 | 7ed85ffe | Iustin Pop | |
920 | 65a6f9b7 | Michael Hanselmann | config.write("vif = [%s]\n" % ",".join(vif_data)) |
921 | 7ed85ffe | Iustin Pop | config.write("disk = [%s]\n" % ",".join(disk_data)) |
922 | 074ca009 | Guido Trotter | |
923 | 7adf7814 | René Nussbaumer | if hvp[constants.HV_ROOT_PATH]:
|
924 | 7adf7814 | René Nussbaumer | config.write("root = '%s'\n" % hvp[constants.HV_ROOT_PATH])
|
925 | 65a6f9b7 | Michael Hanselmann | config.write("on_poweroff = 'destroy'\n")
|
926 | 990ade2d | Stephen Shirley | if hvp[constants.HV_REBOOT_BEHAVIOR] == constants.INSTANCE_REBOOT_ALLOWED:
|
927 | 990ade2d | Stephen Shirley | config.write("on_reboot = 'restart'\n")
|
928 | 990ade2d | Stephen Shirley | else:
|
929 | 990ade2d | Stephen Shirley | config.write("on_reboot = 'destroy'\n")
|
930 | 65a6f9b7 | Michael Hanselmann | config.write("on_crash = 'restart'\n")
|
931 | 07813a9e | Iustin Pop | config.write("extra = '%s'\n" % hvp[constants.HV_KERNEL_ARGS])
|
932 | 73cd67f4 | Guido Trotter | |
933 | c3d839f5 | Michael Hanselmann | return config.getvalue()
|
934 | 65a6f9b7 | Michael Hanselmann | |
935 | 65a6f9b7 | Michael Hanselmann | |
936 | 65a6f9b7 | Michael Hanselmann | class XenHvmHypervisor(XenHypervisor): |
937 | 65a6f9b7 | Michael Hanselmann | """Xen HVM hypervisor interface"""
|
938 | 65a6f9b7 | Michael Hanselmann | |
939 | 69b99987 | Michael Hanselmann | ANCILLARY_FILES = XenHypervisor.ANCILLARY_FILES + [ |
940 | 9d9bded1 | Michael Hanselmann | pathutils.VNC_PASSWORD_FILE, |
941 | 69b99987 | Michael Hanselmann | ] |
942 | 69ab2e12 | Guido Trotter | ANCILLARY_FILES_OPT = XenHypervisor.ANCILLARY_FILES_OPT + [ |
943 | 9d9bded1 | Michael Hanselmann | pathutils.VNC_PASSWORD_FILE, |
944 | 69ab2e12 | Guido Trotter | ] |
945 | 3680f662 | Guido Trotter | |
946 | 205ab586 | Iustin Pop | PARAMETERS = { |
947 | 205ab586 | Iustin Pop | constants.HV_ACPI: hv_base.NO_CHECK, |
948 | 016d04b3 | Michael Hanselmann | constants.HV_BOOT_ORDER: (True, ) +
|
949 | 016d04b3 | Michael Hanselmann | (lambda x: x and len(x.strip("acdn")) == 0, |
950 | 016d04b3 | Michael Hanselmann | "Invalid boot order specified, must be one or more of [acdn]",
|
951 | 016d04b3 | Michael Hanselmann | None, None), |
952 | 205ab586 | Iustin Pop | constants.HV_CDROM_IMAGE_PATH: hv_base.OPT_FILE_CHECK, |
953 | 016d04b3 | Michael Hanselmann | constants.HV_DISK_TYPE: |
954 | 016d04b3 | Michael Hanselmann | hv_base.ParamInSet(True, constants.HT_HVM_VALID_DISK_TYPES),
|
955 | 016d04b3 | Michael Hanselmann | constants.HV_NIC_TYPE: |
956 | 016d04b3 | Michael Hanselmann | hv_base.ParamInSet(True, constants.HT_HVM_VALID_NIC_TYPES),
|
957 | 205ab586 | Iustin Pop | constants.HV_PAE: hv_base.NO_CHECK, |
958 | 016d04b3 | Michael Hanselmann | constants.HV_VNC_BIND_ADDRESS: |
959 | 8b312c1d | Manuel Franceschini | (False, netutils.IP4Address.IsValid,
|
960 | 016d04b3 | Michael Hanselmann | "VNC bind address is not a valid IP address", None, None), |
961 | 205ab586 | Iustin Pop | constants.HV_KERNEL_PATH: hv_base.REQ_FILE_CHECK, |
962 | 205ab586 | Iustin Pop | constants.HV_DEVICE_MODEL: hv_base.REQ_FILE_CHECK, |
963 | 6e6bb8d5 | Guido Trotter | constants.HV_VNC_PASSWORD_FILE: hv_base.REQ_FILE_CHECK, |
964 | e2d14329 | Andrea Spadaccini | constants.HV_MIGRATION_PORT: hv_base.REQ_NET_PORT_CHECK, |
965 | 783a6c0b | Iustin Pop | constants.HV_MIGRATION_MODE: hv_base.MIGRATION_MODE_CHECK, |
966 | 6b970cef | Jun Futagawa | constants.HV_USE_LOCALTIME: hv_base.NO_CHECK, |
967 | e695efbf | Iustin Pop | # TODO: Add a check for the blockdev prefix (matching [a-z:] or similar).
|
968 | e695efbf | Iustin Pop | constants.HV_BLOCKDEV_PREFIX: hv_base.NO_CHECK, |
969 | 87f0aa48 | Jack | # Add PCI passthrough
|
970 | 3891c95e | Bernardo Dal Seno | constants.HV_PASSTHROUGH: hv_base.NO_CHECK, |
971 | 990ade2d | Stephen Shirley | constants.HV_REBOOT_BEHAVIOR: |
972 | c4708267 | Tsachy Shacham | hv_base.ParamInSet(True, constants.REBOOT_BEHAVIORS),
|
973 | c4708267 | Tsachy Shacham | constants.HV_CPU_MASK: hv_base.OPT_MULTI_CPU_MASK_CHECK, |
974 | 8bd977e9 | Sébastien Bocahu | constants.HV_CPU_CAP: hv_base.NO_CHECK, |
975 | 8bd977e9 | Sébastien Bocahu | constants.HV_CPU_WEIGHT: |
976 | 8bd977e9 | Sébastien Bocahu | (False, lambda x: 0 < x < 65535, "invalid weight", None, None), |
977 | 05440845 | Helga Velroyen | constants.HV_VIF_TYPE: |
978 | 05440845 | Helga Velroyen | hv_base.ParamInSet(False, constants.HT_HVM_VALID_VIF_TYPES),
|
979 | ffc27116 | Thomas Thrainer | constants.HV_VIRIDIAN: hv_base.NO_CHECK, |
980 | 205ab586 | Iustin Pop | } |
981 | 09ea8710 | Iustin Pop | |
982 | c3d839f5 | Michael Hanselmann | def _GetConfig(self, instance, startup_memory, block_devices): |
983 | 65a6f9b7 | Michael Hanselmann | """Create a Xen 3.1 HVM config file.
|
984 | 65a6f9b7 | Michael Hanselmann |
|
985 | 65a6f9b7 | Michael Hanselmann | """
|
986 | a985b417 | Iustin Pop | hvp = instance.hvparams |
987 | a985b417 | Iustin Pop | |
988 | 65a6f9b7 | Michael Hanselmann | config = StringIO() |
989 | e2ee1cea | Iustin Pop | |
990 | e2ee1cea | Iustin Pop | # kernel handling
|
991 | e2ee1cea | Iustin Pop | kpath = hvp[constants.HV_KERNEL_PATH] |
992 | e2ee1cea | Iustin Pop | config.write("kernel = '%s'\n" % kpath)
|
993 | e2ee1cea | Iustin Pop | |
994 | 65a6f9b7 | Michael Hanselmann | config.write("builder = 'hvm'\n")
|
995 | 61eb1a46 | Guido Trotter | config.write("memory = %d\n" % startup_memory)
|
996 | 80121c83 | Guido Trotter | config.write("maxmem = %d\n" % instance.beparams[constants.BE_MAXMEM])
|
997 | 8b3fd458 | Iustin Pop | config.write("vcpus = %d\n" % instance.beparams[constants.BE_VCPUS])
|
998 | 347fa0f1 | Michael Hanselmann | cpu_pinning = _CreateConfigCpus(hvp[constants.HV_CPU_MASK]) |
999 | c4708267 | Tsachy Shacham | if cpu_pinning:
|
1000 | c4708267 | Tsachy Shacham | config.write("%s\n" % cpu_pinning)
|
1001 | 8bd977e9 | Sébastien Bocahu | cpu_cap = hvp[constants.HV_CPU_CAP] |
1002 | 8bd977e9 | Sébastien Bocahu | if cpu_cap:
|
1003 | 8bd977e9 | Sébastien Bocahu | config.write("cpu_cap=%d\n" % cpu_cap)
|
1004 | 8bd977e9 | Sébastien Bocahu | cpu_weight = hvp[constants.HV_CPU_WEIGHT] |
1005 | 8bd977e9 | Sébastien Bocahu | if cpu_weight:
|
1006 | 8bd977e9 | Sébastien Bocahu | config.write("cpu_weight=%d\n" % cpu_weight)
|
1007 | c4708267 | Tsachy Shacham | |
1008 | 65a6f9b7 | Michael Hanselmann | config.write("name = '%s'\n" % instance.name)
|
1009 | 09ea8710 | Iustin Pop | if hvp[constants.HV_PAE]:
|
1010 | a21dda8b | Iustin Pop | config.write("pae = 1\n")
|
1011 | a21dda8b | Iustin Pop | else:
|
1012 | a21dda8b | Iustin Pop | config.write("pae = 0\n")
|
1013 | 09ea8710 | Iustin Pop | if hvp[constants.HV_ACPI]:
|
1014 | a21dda8b | Iustin Pop | config.write("acpi = 1\n")
|
1015 | a21dda8b | Iustin Pop | else:
|
1016 | a21dda8b | Iustin Pop | config.write("acpi = 0\n")
|
1017 | ffc27116 | Thomas Thrainer | if hvp[constants.HV_VIRIDIAN]:
|
1018 | ffc27116 | Thomas Thrainer | config.write("viridian = 1\n")
|
1019 | ffc27116 | Thomas Thrainer | else:
|
1020 | ffc27116 | Thomas Thrainer | config.write("viridian = 0\n")
|
1021 | ffc27116 | Thomas Thrainer | |
1022 | 65a6f9b7 | Michael Hanselmann | config.write("apic = 1\n")
|
1023 | 09ea8710 | Iustin Pop | config.write("device_model = '%s'\n" % hvp[constants.HV_DEVICE_MODEL])
|
1024 | a985b417 | Iustin Pop | config.write("boot = '%s'\n" % hvp[constants.HV_BOOT_ORDER])
|
1025 | 65a6f9b7 | Michael Hanselmann | config.write("sdl = 0\n")
|
1026 | 97efde45 | Guido Trotter | config.write("usb = 1\n")
|
1027 | 97efde45 | Guido Trotter | config.write("usbdevice = 'tablet'\n")
|
1028 | 65a6f9b7 | Michael Hanselmann | config.write("vnc = 1\n")
|
1029 | a985b417 | Iustin Pop | if hvp[constants.HV_VNC_BIND_ADDRESS] is None: |
1030 | d0c11cf7 | Alexander Schreiber | config.write("vnclisten = '%s'\n" % constants.VNC_DEFAULT_BIND_ADDRESS)
|
1031 | d0c11cf7 | Alexander Schreiber | else:
|
1032 | 6b405598 | Guido Trotter | config.write("vnclisten = '%s'\n" % hvp[constants.HV_VNC_BIND_ADDRESS])
|
1033 | 65a6f9b7 | Michael Hanselmann | |
1034 | 377d74c9 | Guido Trotter | if instance.network_port > constants.VNC_BASE_PORT:
|
1035 | 377d74c9 | Guido Trotter | display = instance.network_port - constants.VNC_BASE_PORT |
1036 | 65a6f9b7 | Michael Hanselmann | config.write("vncdisplay = %s\n" % display)
|
1037 | 65a6f9b7 | Michael Hanselmann | config.write("vncunused = 0\n")
|
1038 | 65a6f9b7 | Michael Hanselmann | else:
|
1039 | 65a6f9b7 | Michael Hanselmann | config.write("# vncdisplay = 1\n")
|
1040 | 65a6f9b7 | Michael Hanselmann | config.write("vncunused = 1\n")
|
1041 | 65a6f9b7 | Michael Hanselmann | |
1042 | 6e6bb8d5 | Guido Trotter | vnc_pwd_file = hvp[constants.HV_VNC_PASSWORD_FILE] |
1043 | 65a6f9b7 | Michael Hanselmann | try:
|
1044 | 6e6bb8d5 | Guido Trotter | password = utils.ReadFile(vnc_pwd_file) |
1045 | 78f66a17 | Guido Trotter | except EnvironmentError, err: |
1046 | 78f66a17 | Guido Trotter | raise errors.HypervisorError("Failed to open VNC password file %s: %s" % |
1047 | 6e6bb8d5 | Guido Trotter | (vnc_pwd_file, err)) |
1048 | 65a6f9b7 | Michael Hanselmann | |
1049 | 65a6f9b7 | Michael Hanselmann | config.write("vncpasswd = '%s'\n" % password.rstrip())
|
1050 | 65a6f9b7 | Michael Hanselmann | |
1051 | 65a6f9b7 | Michael Hanselmann | config.write("serial = 'pty'\n")
|
1052 | 6b970cef | Jun Futagawa | if hvp[constants.HV_USE_LOCALTIME]:
|
1053 | 6b970cef | Jun Futagawa | config.write("localtime = 1\n")
|
1054 | 65a6f9b7 | Michael Hanselmann | |
1055 | 65a6f9b7 | Michael Hanselmann | vif_data = [] |
1056 | 05440845 | Helga Velroyen | # Note: what is called 'nic_type' here, is used as value for the xen nic
|
1057 | 05440845 | Helga Velroyen | # vif config parameter 'model'. For the xen nic vif parameter 'type', we use
|
1058 | 05440845 | Helga Velroyen | # the 'vif_type' to avoid a clash of notation.
|
1059 | a985b417 | Iustin Pop | nic_type = hvp[constants.HV_NIC_TYPE] |
1060 | 05440845 | Helga Velroyen | |
1061 | f48148c3 | Iustin Pop | if nic_type is None: |
1062 | 05440845 | Helga Velroyen | vif_type_str = ""
|
1063 | 05440845 | Helga Velroyen | if hvp[constants.HV_VIF_TYPE]:
|
1064 | 05440845 | Helga Velroyen | vif_type_str = ", type=%s" % hvp[constants.HV_VIF_TYPE]
|
1065 | f48148c3 | Iustin Pop | # ensure old instances don't change
|
1066 | 05440845 | Helga Velroyen | nic_type_str = vif_type_str |
1067 | d08f6067 | Guido Trotter | elif nic_type == constants.HT_NIC_PARAVIRTUAL:
|
1068 | f48148c3 | Iustin Pop | nic_type_str = ", type=paravirtualized"
|
1069 | f48148c3 | Iustin Pop | else:
|
1070 | 05440845 | Helga Velroyen | # parameter 'model' is only valid with type 'ioemu'
|
1071 | 05440845 | Helga Velroyen | nic_type_str = ", model=%s, type=%s" % \
|
1072 | 05440845 | Helga Velroyen | (nic_type, constants.HT_HVM_VIF_IOEMU) |
1073 | 65a6f9b7 | Michael Hanselmann | for nic in instance.nics: |
1074 | 503b97a9 | Guido Trotter | nic_str = "mac=%s%s" % (nic.mac, nic_type_str)
|
1075 | 65a6f9b7 | Michael Hanselmann | ip = getattr(nic, "ip", None) |
1076 | 65a6f9b7 | Michael Hanselmann | if ip is not None: |
1077 | 65a6f9b7 | Michael Hanselmann | nic_str += ", ip=%s" % ip
|
1078 | 503b97a9 | Guido Trotter | if nic.nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
|
1079 | 503b97a9 | Guido Trotter | nic_str += ", bridge=%s" % nic.nicparams[constants.NIC_LINK]
|
1080 | 0183a697 | Alessandro Cincaglini | vif_data.append("'%s'" % nic_str)
|
1081 | 65a6f9b7 | Michael Hanselmann | |
1082 | 65a6f9b7 | Michael Hanselmann | config.write("vif = [%s]\n" % ",".join(vif_data)) |
1083 | 525011bc | Maciej Bliziński | |
1084 | d0bb3f24 | Michael Hanselmann | disk_data = \ |
1085 | d0bb3f24 | Michael Hanselmann | _GetConfigFileDiskData(block_devices, hvp[constants.HV_BLOCKDEV_PREFIX]) |
1086 | 525011bc | Maciej Bliziński | |
1087 | a985b417 | Iustin Pop | iso_path = hvp[constants.HV_CDROM_IMAGE_PATH] |
1088 | f48148c3 | Iustin Pop | if iso_path:
|
1089 | f48148c3 | Iustin Pop | iso = "'file:%s,hdc:cdrom,r'" % iso_path
|
1090 | a21dda8b | Iustin Pop | disk_data.append(iso) |
1091 | a21dda8b | Iustin Pop | |
1092 | a21dda8b | Iustin Pop | config.write("disk = [%s]\n" % (",".join(disk_data))) |
1093 | 87f0aa48 | Jack | # Add PCI passthrough
|
1094 | 87f0aa48 | Jack | pci_pass_arr = [] |
1095 | 87f0aa48 | Jack | pci_pass = hvp[constants.HV_PASSTHROUGH] |
1096 | 87f0aa48 | Jack | if pci_pass:
|
1097 | 3891c95e | Bernardo Dal Seno | pci_pass_arr = pci_pass.split(";")
|
1098 | 3891c95e | Bernardo Dal Seno | config.write("pci = %s\n" % pci_pass_arr)
|
1099 | 65a6f9b7 | Michael Hanselmann | config.write("on_poweroff = 'destroy'\n")
|
1100 | 990ade2d | Stephen Shirley | if hvp[constants.HV_REBOOT_BEHAVIOR] == constants.INSTANCE_REBOOT_ALLOWED:
|
1101 | 990ade2d | Stephen Shirley | config.write("on_reboot = 'restart'\n")
|
1102 | 990ade2d | Stephen Shirley | else:
|
1103 | 990ade2d | Stephen Shirley | config.write("on_reboot = 'destroy'\n")
|
1104 | 65a6f9b7 | Michael Hanselmann | config.write("on_crash = 'restart'\n")
|
1105 | 73cd67f4 | Guido Trotter | |
1106 | c3d839f5 | Michael Hanselmann | return config.getvalue() |