root / lib / hypervisor / hv_xen.py @ 398fd4f6
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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 | ff19ac20 | Helga Velroyen | def _RunInstanceList(fn, instance_list_errors): |
86 | ff19ac20 | Helga Velroyen | """Helper function for L{_GetInstanceList} to retrieve the list of instances
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87 | ff19ac20 | Helga Velroyen | from xen.
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88 | b255379d | Michael Hanselmann |
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89 | b255379d | Michael Hanselmann | @type fn: callable
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90 | ff19ac20 | Helga Velroyen | @param fn: Function to query xen for the list of instances
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91 | ff19ac20 | Helga Velroyen | @type instance_list_errors: list
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92 | ff19ac20 | Helga Velroyen | @param instance_list_errors: Error list
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93 | b255379d | Michael Hanselmann | @rtype: list
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94 | b255379d | Michael Hanselmann |
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95 | b255379d | Michael Hanselmann | """
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96 | b255379d | Michael Hanselmann | result = fn() |
97 | b255379d | Michael Hanselmann | if result.failed:
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98 | ff19ac20 | Helga Velroyen | logging.error("Retrieving the instance list from xen failed (%s): %s",
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99 | ff19ac20 | Helga Velroyen | result.fail_reason, result.output) |
100 | ff19ac20 | Helga Velroyen | instance_list_errors.append(result) |
101 | b255379d | Michael Hanselmann | raise utils.RetryAgain()
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102 | b255379d | Michael Hanselmann | |
103 | b255379d | Michael Hanselmann | # skip over the heading
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104 | b255379d | Michael Hanselmann | return result.stdout.splitlines()
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105 | b255379d | Michael Hanselmann | |
106 | b255379d | Michael Hanselmann | |
107 | 2609da63 | Helga Velroyen | def _ParseInstanceList(lines, include_node): |
108 | 2609da63 | Helga Velroyen | """Parses the output of listing instances by xen.
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109 | b255379d | Michael Hanselmann |
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110 | b255379d | Michael Hanselmann | @type lines: list
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111 | 2609da63 | Helga Velroyen | @param lines: Result of retrieving the instance list from xen
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112 | b255379d | Michael Hanselmann | @type include_node: boolean
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113 | b255379d | Michael Hanselmann | @param include_node: If True, return information for Dom0
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114 | b255379d | Michael Hanselmann | @return: list of tuple containing (name, id, memory, vcpus, state, time
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115 | b255379d | Michael Hanselmann | spent)
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116 | b255379d | Michael Hanselmann |
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117 | b255379d | Michael Hanselmann | """
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118 | b255379d | Michael Hanselmann | result = [] |
119 | b255379d | Michael Hanselmann | |
120 | b255379d | Michael Hanselmann | # Iterate through all lines while ignoring header
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121 | b255379d | Michael Hanselmann | for line in lines[1:]: |
122 | b255379d | Michael Hanselmann | # The format of lines is:
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123 | b255379d | Michael Hanselmann | # Name ID Mem(MiB) VCPUs State Time(s)
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124 | b255379d | Michael Hanselmann | # Domain-0 0 3418 4 r----- 266.2
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125 | b255379d | Michael Hanselmann | data = line.split() |
126 | b255379d | Michael Hanselmann | if len(data) != 6: |
127 | 2609da63 | Helga Velroyen | raise errors.HypervisorError("Can't parse instance list," |
128 | b255379d | Michael Hanselmann | " line: %s" % line)
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129 | b255379d | Michael Hanselmann | try:
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130 | b255379d | Michael Hanselmann | data[1] = int(data[1]) |
131 | b255379d | Michael Hanselmann | data[2] = int(data[2]) |
132 | b255379d | Michael Hanselmann | data[3] = int(data[3]) |
133 | b255379d | Michael Hanselmann | data[5] = float(data[5]) |
134 | b255379d | Michael Hanselmann | except (TypeError, ValueError), err: |
135 | 2609da63 | Helga Velroyen | raise errors.HypervisorError("Can't parse instance list," |
136 | b255379d | Michael Hanselmann | " line: %s, error: %s" % (line, err))
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137 | b255379d | Michael Hanselmann | |
138 | b255379d | Michael Hanselmann | # skip the Domain-0 (optional)
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139 | b255379d | Michael Hanselmann | if include_node or data[0] != _DOM0_NAME: |
140 | b255379d | Michael Hanselmann | result.append(data) |
141 | b255379d | Michael Hanselmann | |
142 | b255379d | Michael Hanselmann | return result
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143 | b255379d | Michael Hanselmann | |
144 | b255379d | Michael Hanselmann | |
145 | 36bebc53 | Helga Velroyen | def _GetInstanceList(fn, include_node, _timeout=5): |
146 | b255379d | Michael Hanselmann | """Return the list of running instances.
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147 | b255379d | Michael Hanselmann |
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148 | 2609da63 | Helga Velroyen | See L{_RunInstanceList} and L{_ParseInstanceList} for parameter details.
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149 | b255379d | Michael Hanselmann |
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150 | b255379d | Michael Hanselmann | """
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151 | ff19ac20 | Helga Velroyen | instance_list_errors = [] |
152 | b255379d | Michael Hanselmann | try:
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153 | ff19ac20 | Helga Velroyen | lines = utils.Retry(_RunInstanceList, (0.3, 1.5, 1.0), _timeout, |
154 | ff19ac20 | Helga Velroyen | args=(fn, instance_list_errors)) |
155 | b255379d | Michael Hanselmann | except utils.RetryTimeout:
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156 | ff19ac20 | Helga Velroyen | if instance_list_errors:
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157 | ff19ac20 | Helga Velroyen | instance_list_result = instance_list_errors.pop() |
158 | b255379d | Michael Hanselmann | |
159 | ff19ac20 | Helga Velroyen | errmsg = ("listing instances failed, timeout exceeded (%s): %s" %
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160 | ff19ac20 | Helga Velroyen | (instance_list_result.fail_reason, instance_list_result.output)) |
161 | b255379d | Michael Hanselmann | else:
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162 | ff19ac20 | Helga Velroyen | errmsg = "listing instances failed"
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163 | b255379d | Michael Hanselmann | |
164 | b255379d | Michael Hanselmann | raise errors.HypervisorError(errmsg)
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165 | b255379d | Michael Hanselmann | |
166 | 2609da63 | Helga Velroyen | return _ParseInstanceList(lines, include_node)
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167 | b255379d | Michael Hanselmann | |
168 | b255379d | Michael Hanselmann | |
169 | 06c9a520 | Michael Hanselmann | def _ParseNodeInfo(info): |
170 | 06c9a520 | Michael Hanselmann | """Return information about the node.
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171 | 06c9a520 | Michael Hanselmann |
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172 | 06c9a520 | Michael Hanselmann | @return: a dict with the following keys (memory values in MiB):
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173 | 06c9a520 | Michael Hanselmann | - memory_total: the total memory size on the node
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174 | 06c9a520 | Michael Hanselmann | - memory_free: the available memory on the node for instances
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175 | 06c9a520 | Michael Hanselmann | - nr_cpus: total number of CPUs
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176 | 06c9a520 | Michael Hanselmann | - nr_nodes: in a NUMA system, the number of domains
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177 | 06c9a520 | Michael Hanselmann | - nr_sockets: the number of physical CPU sockets in the node
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178 | 06c9a520 | Michael Hanselmann | - hv_version: the hypervisor version in the form (major, minor)
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179 | 06c9a520 | Michael Hanselmann |
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180 | 06c9a520 | Michael Hanselmann | """
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181 | 06c9a520 | Michael Hanselmann | result = {} |
182 | 06c9a520 | Michael Hanselmann | cores_per_socket = threads_per_core = nr_cpus = None
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183 | 06c9a520 | Michael Hanselmann | xen_major, xen_minor = None, None |
184 | 06c9a520 | Michael Hanselmann | memory_total = None
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185 | 06c9a520 | Michael Hanselmann | memory_free = None
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186 | 06c9a520 | Michael Hanselmann | |
187 | 06c9a520 | Michael Hanselmann | for line in info.splitlines(): |
188 | 06c9a520 | Michael Hanselmann | fields = line.split(":", 1) |
189 | 06c9a520 | Michael Hanselmann | |
190 | 06c9a520 | Michael Hanselmann | if len(fields) < 2: |
191 | 06c9a520 | Michael Hanselmann | continue
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192 | 06c9a520 | Michael Hanselmann | |
193 | 06c9a520 | Michael Hanselmann | (key, val) = map(lambda s: s.strip(), fields) |
194 | 06c9a520 | Michael Hanselmann | |
195 | 06c9a520 | Michael Hanselmann | # Note: in Xen 3, memory has changed to total_memory
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196 | 06c9a520 | Michael Hanselmann | if key in ("memory", "total_memory"): |
197 | 06c9a520 | Michael Hanselmann | memory_total = int(val)
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198 | 06c9a520 | Michael Hanselmann | elif key == "free_memory": |
199 | 06c9a520 | Michael Hanselmann | memory_free = int(val)
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200 | 06c9a520 | Michael Hanselmann | elif key == "nr_cpus": |
201 | 06c9a520 | Michael Hanselmann | nr_cpus = result["cpu_total"] = int(val) |
202 | 06c9a520 | Michael Hanselmann | elif key == "nr_nodes": |
203 | 06c9a520 | Michael Hanselmann | result["cpu_nodes"] = int(val) |
204 | 06c9a520 | Michael Hanselmann | elif key == "cores_per_socket": |
205 | 06c9a520 | Michael Hanselmann | cores_per_socket = int(val)
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206 | 06c9a520 | Michael Hanselmann | elif key == "threads_per_core": |
207 | 06c9a520 | Michael Hanselmann | threads_per_core = int(val)
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208 | 06c9a520 | Michael Hanselmann | elif key == "xen_major": |
209 | 06c9a520 | Michael Hanselmann | xen_major = int(val)
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210 | 06c9a520 | Michael Hanselmann | elif key == "xen_minor": |
211 | 06c9a520 | Michael Hanselmann | xen_minor = int(val)
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212 | 06c9a520 | Michael Hanselmann | |
213 | 06c9a520 | Michael Hanselmann | if None not in [cores_per_socket, threads_per_core, nr_cpus]: |
214 | 06c9a520 | Michael Hanselmann | result["cpu_sockets"] = nr_cpus / (cores_per_socket * threads_per_core)
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215 | 06c9a520 | Michael Hanselmann | |
216 | 06c9a520 | Michael Hanselmann | if memory_free is not None: |
217 | 06c9a520 | Michael Hanselmann | result["memory_free"] = memory_free
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218 | 06c9a520 | Michael Hanselmann | |
219 | 06c9a520 | Michael Hanselmann | if memory_total is not None: |
220 | 06c9a520 | Michael Hanselmann | result["memory_total"] = memory_total
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221 | 06c9a520 | Michael Hanselmann | |
222 | 06c9a520 | Michael Hanselmann | if not (xen_major is None or xen_minor is None): |
223 | 06c9a520 | Michael Hanselmann | result[constants.HV_NODEINFO_KEY_VERSION] = (xen_major, xen_minor) |
224 | 06c9a520 | Michael Hanselmann | |
225 | 06c9a520 | Michael Hanselmann | return result
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226 | 06c9a520 | Michael Hanselmann | |
227 | 06c9a520 | Michael Hanselmann | |
228 | fac489a5 | Helga Velroyen | def _MergeInstanceInfo(info, instance_list): |
229 | 06c9a520 | Michael Hanselmann | """Updates node information from L{_ParseNodeInfo} with instance info.
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230 | 06c9a520 | Michael Hanselmann |
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231 | 06c9a520 | Michael Hanselmann | @type info: dict
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232 | 06c9a520 | Michael Hanselmann | @param info: Result from L{_ParseNodeInfo}
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233 | fac489a5 | Helga Velroyen | @type instance_list: list of tuples
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234 | fac489a5 | Helga Velroyen | @param instance_list: list of instance information; one tuple per instance
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235 | 06c9a520 | Michael Hanselmann | @rtype: dict
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236 | 06c9a520 | Michael Hanselmann |
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237 | 06c9a520 | Michael Hanselmann | """
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238 | 06c9a520 | Michael Hanselmann | total_instmem = 0
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239 | 06c9a520 | Michael Hanselmann | |
240 | fac489a5 | Helga Velroyen | for (name, _, mem, vcpus, _, _) in instance_list: |
241 | 06c9a520 | Michael Hanselmann | if name == _DOM0_NAME:
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242 | 06c9a520 | Michael Hanselmann | info["memory_dom0"] = mem
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243 | 06c9a520 | Michael Hanselmann | info["dom0_cpus"] = vcpus
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244 | 06c9a520 | Michael Hanselmann | |
245 | 06c9a520 | Michael Hanselmann | # Include Dom0 in total memory usage
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246 | 06c9a520 | Michael Hanselmann | total_instmem += mem |
247 | 06c9a520 | Michael Hanselmann | |
248 | 06c9a520 | Michael Hanselmann | memory_free = info.get("memory_free")
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249 | 06c9a520 | Michael Hanselmann | memory_total = info.get("memory_total")
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250 | 06c9a520 | Michael Hanselmann | |
251 | 06c9a520 | Michael Hanselmann | # Calculate memory used by hypervisor
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252 | 06c9a520 | Michael Hanselmann | if None not in [memory_total, memory_free, total_instmem]: |
253 | 06c9a520 | Michael Hanselmann | info["memory_hv"] = memory_total - memory_free - total_instmem
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254 | 06c9a520 | Michael Hanselmann | |
255 | 06c9a520 | Michael Hanselmann | return info
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256 | 06c9a520 | Michael Hanselmann | |
257 | 06c9a520 | Michael Hanselmann | |
258 | fac489a5 | Helga Velroyen | def _GetNodeInfo(info, instance_list): |
259 | 06c9a520 | Michael Hanselmann | """Combines L{_MergeInstanceInfo} and L{_ParseNodeInfo}.
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260 | 06c9a520 | Michael Hanselmann |
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261 | fac489a5 | Helga Velroyen | @type instance_list: list of tuples
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262 | fac489a5 | Helga Velroyen | @param instance_list: list of instance information; one tuple per instance
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263 | fac489a5 | Helga Velroyen |
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264 | 06c9a520 | Michael Hanselmann | """
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265 | fac489a5 | Helga Velroyen | return _MergeInstanceInfo(_ParseNodeInfo(info), instance_list)
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266 | 06c9a520 | Michael Hanselmann | |
267 | 06c9a520 | Michael Hanselmann | |
268 | d0bb3f24 | Michael Hanselmann | def _GetConfigFileDiskData(block_devices, blockdev_prefix, |
269 | d0bb3f24 | Michael Hanselmann | _letters=_DISK_LETTERS): |
270 | d0bb3f24 | Michael Hanselmann | """Get disk directives for Xen config file.
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271 | d0bb3f24 | Michael Hanselmann |
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272 | d0bb3f24 | Michael Hanselmann | This method builds the xen config disk directive according to the
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273 | d0bb3f24 | Michael Hanselmann | given disk_template and block_devices.
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274 | d0bb3f24 | Michael Hanselmann |
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275 | d0bb3f24 | Michael Hanselmann | @param block_devices: list of tuples (cfdev, rldev):
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276 | d0bb3f24 | Michael Hanselmann | - cfdev: dict containing ganeti config disk part
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277 | ce9283c1 | Thomas Thrainer | - rldev: ganeti.block.bdev.BlockDev object
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278 | d0bb3f24 | Michael Hanselmann | @param blockdev_prefix: a string containing blockdevice prefix,
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279 | d0bb3f24 | Michael Hanselmann | e.g. "sd" for /dev/sda
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280 | d0bb3f24 | Michael Hanselmann |
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281 | d0bb3f24 | Michael Hanselmann | @return: string containing disk directive for xen instance config file
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282 | d0bb3f24 | Michael Hanselmann |
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283 | d0bb3f24 | Michael Hanselmann | """
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284 | d0bb3f24 | Michael Hanselmann | if len(block_devices) > len(_letters): |
285 | d0bb3f24 | Michael Hanselmann | raise errors.HypervisorError("Too many disks") |
286 | d0bb3f24 | Michael Hanselmann | |
287 | d0bb3f24 | Michael Hanselmann | disk_data = [] |
288 | d0bb3f24 | Michael Hanselmann | |
289 | d0bb3f24 | Michael Hanselmann | for sd_suffix, (cfdev, dev_path) in zip(_letters, block_devices): |
290 | d0bb3f24 | Michael Hanselmann | sd_name = blockdev_prefix + sd_suffix |
291 | d0bb3f24 | Michael Hanselmann | |
292 | d0bb3f24 | Michael Hanselmann | if cfdev.mode == constants.DISK_RDWR:
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293 | d0bb3f24 | Michael Hanselmann | mode = "w"
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294 | d0bb3f24 | Michael Hanselmann | else:
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295 | d0bb3f24 | Michael Hanselmann | mode = "r"
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296 | d0bb3f24 | Michael Hanselmann | |
297 | d0bb3f24 | Michael Hanselmann | if cfdev.dev_type == constants.LD_FILE:
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298 | d0bb3f24 | Michael Hanselmann | driver = _FILE_DRIVER_MAP[cfdev.physical_id[0]]
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299 | d0bb3f24 | Michael Hanselmann | else:
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300 | d0bb3f24 | Michael Hanselmann | driver = "phy"
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301 | d0bb3f24 | Michael Hanselmann | |
302 | d0bb3f24 | Michael Hanselmann | disk_data.append("'%s:%s,%s,%s'" % (driver, dev_path, sd_name, mode))
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303 | d0bb3f24 | Michael Hanselmann | |
304 | d0bb3f24 | Michael Hanselmann | return disk_data
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305 | d0bb3f24 | Michael Hanselmann | |
306 | d0bb3f24 | Michael Hanselmann | |
307 | a2d32034 | Michael Hanselmann | class XenHypervisor(hv_base.BaseHypervisor): |
308 | 65a6f9b7 | Michael Hanselmann | """Xen generic hypervisor interface
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309 | 65a6f9b7 | Michael Hanselmann |
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310 | 65a6f9b7 | Michael Hanselmann | This is the Xen base class used for both Xen PVM and HVM. It contains
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311 | 65a6f9b7 | Michael Hanselmann | all the functionality that is identical for both.
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312 | 65a6f9b7 | Michael Hanselmann |
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313 | 65a6f9b7 | Michael Hanselmann | """
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314 | d271c6fd | Iustin Pop | CAN_MIGRATE = True
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315 | 7dd106d3 | Iustin Pop | REBOOT_RETRY_COUNT = 60
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316 | 7dd106d3 | Iustin Pop | REBOOT_RETRY_INTERVAL = 10
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317 | 65a6f9b7 | Michael Hanselmann | |
318 | 3680f662 | Guido Trotter | ANCILLARY_FILES = [ |
319 | 22d568c2 | Guido Trotter | XEND_CONFIG_FILE, |
320 | 22d568c2 | Guido Trotter | XL_CONFIG_FILE, |
321 | 22d568c2 | Guido Trotter | VIF_BRIDGE_SCRIPT, |
322 | 3680f662 | Guido Trotter | ] |
323 | 69ab2e12 | Guido Trotter | ANCILLARY_FILES_OPT = [ |
324 | 69ab2e12 | Guido Trotter | XL_CONFIG_FILE, |
325 | 3680f662 | Guido Trotter | ] |
326 | 3680f662 | Guido Trotter | |
327 | 3d942d8b | Michael Hanselmann | def __init__(self, _cfgdir=None, _run_cmd_fn=None, _cmd=None): |
328 | 0a903309 | Michael Hanselmann | hv_base.BaseHypervisor.__init__(self)
|
329 | 0a903309 | Michael Hanselmann | |
330 | 0a903309 | Michael Hanselmann | if _cfgdir is None: |
331 | 0a903309 | Michael Hanselmann | self._cfgdir = pathutils.XEN_CONFIG_DIR
|
332 | 0a903309 | Michael Hanselmann | else:
|
333 | 0a903309 | Michael Hanselmann | self._cfgdir = _cfgdir
|
334 | 0a903309 | Michael Hanselmann | |
335 | 3d942d8b | Michael Hanselmann | if _run_cmd_fn is None: |
336 | 3d942d8b | Michael Hanselmann | self._run_cmd_fn = utils.RunCmd
|
337 | 3d942d8b | Michael Hanselmann | else:
|
338 | 3d942d8b | Michael Hanselmann | self._run_cmd_fn = _run_cmd_fn
|
339 | 3d942d8b | Michael Hanselmann | |
340 | 3d942d8b | Michael Hanselmann | self._cmd = _cmd
|
341 | 3d942d8b | Michael Hanselmann | |
342 | 398fd4f6 | Helga Velroyen | def _GetCommand(self, hvparams): |
343 | d8784f7d | Michael Hanselmann | """Returns Xen command to use.
|
344 | d8784f7d | Michael Hanselmann |
|
345 | 51a95d00 | Helga Velroyen | @type hvparams: dict of strings
|
346 | 51a95d00 | Helga Velroyen | @param hvparams: hypervisor parameters
|
347 | 51a95d00 | Helga Velroyen |
|
348 | d8784f7d | Michael Hanselmann | """
|
349 | 3d942d8b | Michael Hanselmann | if self._cmd is None: |
350 | 398fd4f6 | Helga Velroyen | if hvparams is None or constants.HV_XEN_CMD not in hvparams: |
351 | 398fd4f6 | Helga Velroyen | raise errors.HypervisorError("Cannot determine xen command.") |
352 | 51a95d00 | Helga Velroyen | else:
|
353 | 398fd4f6 | Helga Velroyen | cmd = hvparams[constants.HV_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 | 398fd4f6 | Helga Velroyen | def _RunXen(self, args, hvparams): |
363 | 81124130 | Michael Hanselmann | """Wrapper around L{utils.process.RunCmd} to run Xen command.
|
364 | 3d942d8b | Michael Hanselmann |
|
365 | 58e356a9 | Helga Velroyen | @type hvparams: dict of strings
|
366 | 58e356a9 | Helga Velroyen | @param hvparams: dictionary of hypervisor params
|
367 | 81124130 | Michael Hanselmann | @see: L{utils.process.RunCmd}
|
368 | 3d942d8b | Michael Hanselmann |
|
369 | 3d942d8b | Michael Hanselmann | """
|
370 | 398fd4f6 | Helga Velroyen | cmd = [self._GetCommand(hvparams)]
|
371 | 3d942d8b | Michael Hanselmann | cmd.extend(args) |
372 | 3d942d8b | Michael Hanselmann | |
373 | 3d942d8b | Michael Hanselmann | return self._run_cmd_fn(cmd) |
374 | 3d942d8b | Michael Hanselmann | |
375 | 0a903309 | Michael Hanselmann | def _ConfigFileName(self, instance_name): |
376 | c2be2532 | Guido Trotter | """Get the config file name for an instance.
|
377 | c2be2532 | Guido Trotter |
|
378 | c2be2532 | Guido Trotter | @param instance_name: instance name
|
379 | c2be2532 | Guido Trotter | @type instance_name: str
|
380 | c2be2532 | Guido Trotter | @return: fully qualified path to instance config file
|
381 | c2be2532 | Guido Trotter | @rtype: str
|
382 | c2be2532 | Guido Trotter |
|
383 | c2be2532 | Guido Trotter | """
|
384 | 0a903309 | Michael Hanselmann | return utils.PathJoin(self._cfgdir, instance_name) |
385 | c2be2532 | Guido Trotter | |
386 | 5661b908 | Iustin Pop | @classmethod
|
387 | c3d839f5 | Michael Hanselmann | def _GetConfig(cls, instance, startup_memory, block_devices): |
388 | c3d839f5 | Michael Hanselmann | """Build Xen configuration for an instance.
|
389 | 65a6f9b7 | Michael Hanselmann |
|
390 | 65a6f9b7 | Michael Hanselmann | """
|
391 | 65a6f9b7 | Michael Hanselmann | raise NotImplementedError |
392 | 65a6f9b7 | Michael Hanselmann | |
393 | c3d839f5 | Michael Hanselmann | def _WriteConfigFile(self, instance_name, data): |
394 | 4390ccff | Guido Trotter | """Write the Xen config file for the instance.
|
395 | 4390ccff | Guido Trotter |
|
396 | 4390ccff | Guido Trotter | This version of the function just writes the config file from static data.
|
397 | 4390ccff | Guido Trotter |
|
398 | 4390ccff | Guido Trotter | """
|
399 | 1a63f285 | Iustin Pop | # just in case it exists
|
400 | 0a903309 | Michael Hanselmann | utils.RemoveFile(utils.PathJoin(self._cfgdir, "auto", instance_name)) |
401 | a8e8c0c6 | Michael Hanselmann | |
402 | 0a903309 | Michael Hanselmann | cfg_file = self._ConfigFileName(instance_name)
|
403 | 1a63f285 | Iustin Pop | try:
|
404 | 1a63f285 | Iustin Pop | utils.WriteFile(cfg_file, data=data) |
405 | 1a63f285 | Iustin Pop | except EnvironmentError, err: |
406 | 1a63f285 | Iustin Pop | raise errors.HypervisorError("Cannot write Xen instance configuration" |
407 | 1a63f285 | Iustin Pop | " file %s: %s" % (cfg_file, err))
|
408 | 4390ccff | Guido Trotter | |
409 | 0a903309 | Michael Hanselmann | def _ReadConfigFile(self, instance_name): |
410 | 4390ccff | Guido Trotter | """Returns the contents of the instance config file.
|
411 | 4390ccff | Guido Trotter |
|
412 | 4390ccff | Guido Trotter | """
|
413 | 0a903309 | Michael Hanselmann | filename = self._ConfigFileName(instance_name)
|
414 | 76c364d9 | Michael Hanselmann | |
415 | 4390ccff | Guido Trotter | try:
|
416 | 76c364d9 | Michael Hanselmann | file_content = utils.ReadFile(filename) |
417 | 4390ccff | Guido Trotter | except EnvironmentError, err: |
418 | 4390ccff | Guido Trotter | raise errors.HypervisorError("Failed to load Xen config file: %s" % err) |
419 | 76c364d9 | Michael Hanselmann | |
420 | 4390ccff | Guido Trotter | return file_content
|
421 | 4390ccff | Guido Trotter | |
422 | 0a903309 | Michael Hanselmann | def _RemoveConfigFile(self, instance_name): |
423 | 65a6f9b7 | Michael Hanselmann | """Remove the xen configuration file.
|
424 | 65a6f9b7 | Michael Hanselmann |
|
425 | 65a6f9b7 | Michael Hanselmann | """
|
426 | 0a903309 | Michael Hanselmann | utils.RemoveFile(self._ConfigFileName(instance_name))
|
427 | 65a6f9b7 | Michael Hanselmann | |
428 | 48bba9de | Balazs Lecz | def _StashConfigFile(self, instance_name): |
429 | 48bba9de | Balazs Lecz | """Move the Xen config file to the log directory and return its new path.
|
430 | 48bba9de | Balazs Lecz |
|
431 | 48bba9de | Balazs Lecz | """
|
432 | 48bba9de | Balazs Lecz | old_filename = self._ConfigFileName(instance_name)
|
433 | 48bba9de | Balazs Lecz | base = ("%s-%s" %
|
434 | 48bba9de | Balazs Lecz | (instance_name, utils.TimestampForFilename())) |
435 | 48bba9de | Balazs Lecz | new_filename = utils.PathJoin(pathutils.LOG_XEN_DIR, base) |
436 | 48bba9de | Balazs Lecz | utils.RenameFile(old_filename, new_filename) |
437 | 48bba9de | Balazs Lecz | return new_filename
|
438 | 48bba9de | Balazs Lecz | |
439 | 398fd4f6 | Helga Velroyen | def _GetInstanceList(self, include_node, hvparams): |
440 | 36bebc53 | Helga Velroyen | """Wrapper around module level L{_GetInstanceList}.
|
441 | 06b78e8b | Michael Hanselmann |
|
442 | 398fd4f6 | Helga Velroyen | @type hvparams: dict of strings
|
443 | 398fd4f6 | Helga Velroyen | @param hvparams: hypervisor parameters to be used on this node
|
444 | 398fd4f6 | Helga Velroyen |
|
445 | 06b78e8b | Michael Hanselmann | """
|
446 | 398fd4f6 | Helga Velroyen | return _GetInstanceList(lambda: self._RunXen(["list"], hvparams), |
447 | 58e356a9 | Helga Velroyen | include_node) |
448 | 65a6f9b7 | Michael Hanselmann | |
449 | 58e356a9 | Helga Velroyen | def ListInstances(self, hvparams=None): |
450 | 65a6f9b7 | Michael Hanselmann | """Get the list of running instances.
|
451 | 65a6f9b7 | Michael Hanselmann |
|
452 | 65a6f9b7 | Michael Hanselmann | """
|
453 | 398fd4f6 | Helga Velroyen | instance_list = self._GetInstanceList(False, hvparams) |
454 | 36bebc53 | Helga Velroyen | names = [info[0] for info in instance_list] |
455 | 65a6f9b7 | Michael Hanselmann | return names
|
456 | 65a6f9b7 | Michael Hanselmann | |
457 | 0bbec3af | Helga Velroyen | def GetInstanceInfo(self, instance_name, hvparams=None): |
458 | 65a6f9b7 | Michael Hanselmann | """Get instance properties.
|
459 | 65a6f9b7 | Michael Hanselmann |
|
460 | 0bbec3af | Helga Velroyen | @type instance_name: string
|
461 | c41eea6e | Iustin Pop | @param instance_name: the instance name
|
462 | 0bbec3af | Helga Velroyen | @type hvparams: dict of strings
|
463 | 0bbec3af | Helga Velroyen | @param hvparams: the instance's hypervisor params
|
464 | c41eea6e | Iustin Pop |
|
465 | c41eea6e | Iustin Pop | @return: tuple (name, id, memory, vcpus, stat, times)
|
466 | 65a6f9b7 | Michael Hanselmann |
|
467 | 65a6f9b7 | Michael Hanselmann | """
|
468 | 398fd4f6 | Helga Velroyen | instance_list = self._GetInstanceList(instance_name == _DOM0_NAME, hvparams)
|
469 | 65a6f9b7 | Michael Hanselmann | result = None
|
470 | 36bebc53 | Helga Velroyen | for data in instance_list: |
471 | 65a6f9b7 | Michael Hanselmann | if data[0] == instance_name: |
472 | 65a6f9b7 | Michael Hanselmann | result = data |
473 | 65a6f9b7 | Michael Hanselmann | break
|
474 | 65a6f9b7 | Michael Hanselmann | return result
|
475 | 65a6f9b7 | Michael Hanselmann | |
476 | 0200a1af | Helga Velroyen | def GetAllInstancesInfo(self, hvparams=None): |
477 | 65a6f9b7 | Michael Hanselmann | """Get properties of all instances.
|
478 | 65a6f9b7 | Michael Hanselmann |
|
479 | 0200a1af | Helga Velroyen | @type hvparams: dict of strings
|
480 | 0200a1af | Helga Velroyen | @param hvparams: hypervisor parameters
|
481 | c41eea6e | Iustin Pop | @return: list of tuples (name, id, memory, vcpus, stat, times)
|
482 | c41eea6e | Iustin Pop |
|
483 | 65a6f9b7 | Michael Hanselmann | """
|
484 | 398fd4f6 | Helga Velroyen | return self._GetInstanceList(False, hvparams) |
485 | 65a6f9b7 | Michael Hanselmann | |
486 | c3d839f5 | Michael Hanselmann | def _MakeConfigFile(self, instance, startup_memory, block_devices): |
487 | c3d839f5 | Michael Hanselmann | """Gather configuration details and write to disk.
|
488 | c3d839f5 | Michael Hanselmann |
|
489 | c3d839f5 | Michael Hanselmann | See L{_GetConfig} for arguments.
|
490 | c3d839f5 | Michael Hanselmann |
|
491 | c3d839f5 | Michael Hanselmann | """
|
492 | c3d839f5 | Michael Hanselmann | buf = StringIO() |
493 | c3d839f5 | Michael Hanselmann | buf.write("# Automatically generated by Ganeti. Do not edit!\n")
|
494 | c3d839f5 | Michael Hanselmann | buf.write("\n")
|
495 | c3d839f5 | Michael Hanselmann | buf.write(self._GetConfig(instance, startup_memory, block_devices))
|
496 | c3d839f5 | Michael Hanselmann | buf.write("\n")
|
497 | c3d839f5 | Michael Hanselmann | |
498 | c3d839f5 | Michael Hanselmann | self._WriteConfigFile(instance.name, buf.getvalue())
|
499 | c3d839f5 | Michael Hanselmann | |
500 | 323f9095 | Stephen Shirley | def StartInstance(self, instance, block_devices, startup_paused): |
501 | c41eea6e | Iustin Pop | """Start an instance.
|
502 | c41eea6e | Iustin Pop |
|
503 | c41eea6e | Iustin Pop | """
|
504 | 0bbec3af | Helga Velroyen | startup_memory = self._InstanceStartupMemory(instance,
|
505 | 0bbec3af | Helga Velroyen | hvparams=instance.hvparams) |
506 | c3d839f5 | Michael Hanselmann | |
507 | c3d839f5 | Michael Hanselmann | self._MakeConfigFile(instance, startup_memory, block_devices)
|
508 | c3d839f5 | Michael Hanselmann | |
509 | 3d942d8b | Michael Hanselmann | cmd = ["create"]
|
510 | 323f9095 | Stephen Shirley | if startup_paused:
|
511 | 3d942d8b | Michael Hanselmann | cmd.append("-p")
|
512 | 3d942d8b | Michael Hanselmann | cmd.append(self._ConfigFileName(instance.name))
|
513 | 65a6f9b7 | Michael Hanselmann | |
514 | 398fd4f6 | Helga Velroyen | result = self._RunXen(cmd, instance.hvparams)
|
515 | 65a6f9b7 | Michael Hanselmann | if result.failed:
|
516 | 48bba9de | Balazs Lecz | # Move the Xen configuration file to the log directory to avoid
|
517 | 48bba9de | Balazs Lecz | # leaving a stale config file behind.
|
518 | 48bba9de | Balazs Lecz | stashed_config = self._StashConfigFile(instance.name)
|
519 | 48bba9de | Balazs Lecz | raise errors.HypervisorError("Failed to start instance %s: %s (%s). Moved" |
520 | 48bba9de | Balazs Lecz | " config file to %s" %
|
521 | 65a6f9b7 | Michael Hanselmann | (instance.name, result.fail_reason, |
522 | 48bba9de | Balazs Lecz | result.output, stashed_config)) |
523 | 65a6f9b7 | Michael Hanselmann | |
524 | bbcf7ad0 | Iustin Pop | def StopInstance(self, instance, force=False, retry=False, name=None): |
525 | c41eea6e | Iustin Pop | """Stop an instance.
|
526 | c41eea6e | Iustin Pop |
|
527 | c41eea6e | Iustin Pop | """
|
528 | bbcf7ad0 | Iustin Pop | if name is None: |
529 | bbcf7ad0 | Iustin Pop | name = instance.name |
530 | 4b8b172d | Michael Hanselmann | |
531 | 58e356a9 | Helga Velroyen | return self._StopInstance(name, force, instance.hvparams) |
532 | 31da5ab5 | Michael Hanselmann | |
533 | 58e356a9 | Helga Velroyen | def _StopInstance(self, name, force, hvparams): |
534 | 31da5ab5 | Michael Hanselmann | """Stop an instance.
|
535 | 31da5ab5 | Michael Hanselmann |
|
536 | 58e356a9 | Helga Velroyen | @type name: string
|
537 | 58e356a9 | Helga Velroyen | @param name: name of the instance to be shutdown
|
538 | 58e356a9 | Helga Velroyen | @type force: boolean
|
539 | 58e356a9 | Helga Velroyen | @param force: flag specifying whether shutdown should be forced
|
540 | 58e356a9 | Helga Velroyen | @type hvparams: dict of string
|
541 | 58e356a9 | Helga Velroyen | @param hvparams: hypervisor parameters of the instance
|
542 | 58e356a9 | Helga Velroyen |
|
543 | 31da5ab5 | Michael Hanselmann | """
|
544 | 65a6f9b7 | Michael Hanselmann | if force:
|
545 | 3d942d8b | Michael Hanselmann | action = "destroy"
|
546 | 65a6f9b7 | Michael Hanselmann | else:
|
547 | 3d942d8b | Michael Hanselmann | action = "shutdown"
|
548 | 65a6f9b7 | Michael Hanselmann | |
549 | 398fd4f6 | Helga Velroyen | result = self._RunXen([action, name], hvparams)
|
550 | 65a6f9b7 | Michael Hanselmann | if result.failed:
|
551 | 3213d3c8 | Iustin Pop | raise errors.HypervisorError("Failed to stop instance %s: %s, %s" % |
552 | bbcf7ad0 | Iustin Pop | (name, result.fail_reason, result.output)) |
553 | 65a6f9b7 | Michael Hanselmann | |
554 | 4b8b172d | Michael Hanselmann | # Remove configuration file if stopping/starting instance was successful
|
555 | 4b8b172d | Michael Hanselmann | self._RemoveConfigFile(name)
|
556 | 4b8b172d | Michael Hanselmann | |
557 | 65a6f9b7 | Michael Hanselmann | def RebootInstance(self, instance): |
558 | c41eea6e | Iustin Pop | """Reboot an instance.
|
559 | c41eea6e | Iustin Pop |
|
560 | c41eea6e | Iustin Pop | """
|
561 | 0bbec3af | Helga Velroyen | ini_info = self.GetInstanceInfo(instance.name, hvparams=instance.hvparams)
|
562 | 65a6f9b7 | Michael Hanselmann | |
563 | e0561198 | Iustin Pop | if ini_info is None: |
564 | e0561198 | Iustin Pop | raise errors.HypervisorError("Failed to reboot instance %s," |
565 | e0561198 | Iustin Pop | " not running" % instance.name)
|
566 | e0561198 | Iustin Pop | |
567 | 398fd4f6 | Helga Velroyen | result = self._RunXen(["reboot", instance.name], instance.hvparams) |
568 | 65a6f9b7 | Michael Hanselmann | if result.failed:
|
569 | 3213d3c8 | Iustin Pop | raise errors.HypervisorError("Failed to reboot instance %s: %s, %s" % |
570 | 3213d3c8 | Iustin Pop | (instance.name, result.fail_reason, |
571 | 3213d3c8 | Iustin Pop | result.output)) |
572 | 06b78e8b | Michael Hanselmann | |
573 | 06b78e8b | Michael Hanselmann | def _CheckInstance(): |
574 | 0bbec3af | Helga Velroyen | new_info = self.GetInstanceInfo(instance.name, hvparams=instance.hvparams)
|
575 | 06b78e8b | Michael Hanselmann | |
576 | 06b78e8b | Michael Hanselmann | # check if the domain ID has changed or the run time has decreased
|
577 | e0561198 | Iustin Pop | if (new_info is not None and |
578 | e0561198 | Iustin Pop | (new_info[1] != ini_info[1] or new_info[5] < ini_info[5])): |
579 | 06b78e8b | Michael Hanselmann | return
|
580 | 7dd106d3 | Iustin Pop | |
581 | 06b78e8b | Michael Hanselmann | raise utils.RetryAgain()
|
582 | 06b78e8b | Michael Hanselmann | |
583 | 06b78e8b | Michael Hanselmann | try:
|
584 | 06b78e8b | Michael Hanselmann | utils.Retry(_CheckInstance, self.REBOOT_RETRY_INTERVAL,
|
585 | 06b78e8b | Michael Hanselmann | self.REBOOT_RETRY_INTERVAL * self.REBOOT_RETRY_COUNT) |
586 | 06b78e8b | Michael Hanselmann | except utils.RetryTimeout:
|
587 | 7dd106d3 | Iustin Pop | raise errors.HypervisorError("Failed to reboot instance %s: instance" |
588 | 7dd106d3 | Iustin Pop | " did not reboot in the expected interval" %
|
589 | 7dd106d3 | Iustin Pop | (instance.name, )) |
590 | 65a6f9b7 | Michael Hanselmann | |
591 | 2c7a0373 | Guido Trotter | def BalloonInstanceMemory(self, instance, mem): |
592 | 2c7a0373 | Guido Trotter | """Balloon an instance memory to a certain value.
|
593 | 2c7a0373 | Guido Trotter |
|
594 | 2c7a0373 | Guido Trotter | @type instance: L{objects.Instance}
|
595 | 2c7a0373 | Guido Trotter | @param instance: instance to be accepted
|
596 | 2c7a0373 | Guido Trotter | @type mem: int
|
597 | 2c7a0373 | Guido Trotter | @param mem: actual memory size to use for instance runtime
|
598 | 2c7a0373 | Guido Trotter |
|
599 | 2c7a0373 | Guido Trotter | """
|
600 | 398fd4f6 | Helga Velroyen | result = self._RunXen(["mem-set", instance.name, mem], instance.hvparams) |
601 | 2c7a0373 | Guido Trotter | if result.failed:
|
602 | 2c7a0373 | Guido Trotter | raise errors.HypervisorError("Failed to balloon instance %s: %s (%s)" % |
603 | 2c7a0373 | Guido Trotter | (instance.name, result.fail_reason, |
604 | 2c7a0373 | Guido Trotter | result.output)) |
605 | 3d942d8b | Michael Hanselmann | |
606 | 3d942d8b | Michael Hanselmann | # Update configuration file
|
607 | 2c7a0373 | Guido Trotter | cmd = ["sed", "-ie", "s/^memory.*$/memory = %s/" % mem] |
608 | 0a903309 | Michael Hanselmann | cmd.append(self._ConfigFileName(instance.name))
|
609 | 3d942d8b | Michael Hanselmann | |
610 | 2c7a0373 | Guido Trotter | result = utils.RunCmd(cmd) |
611 | 2c7a0373 | Guido Trotter | if result.failed:
|
612 | 2c7a0373 | Guido Trotter | raise errors.HypervisorError("Failed to update memory for %s: %s (%s)" % |
613 | 2c7a0373 | Guido Trotter | (instance.name, result.fail_reason, |
614 | 2c7a0373 | Guido Trotter | result.output)) |
615 | 2c7a0373 | Guido Trotter | |
616 | fac489a5 | Helga Velroyen | def GetNodeInfo(self, hvparams=None): |
617 | 65a6f9b7 | Michael Hanselmann | """Return information about the node.
|
618 | 65a6f9b7 | Michael Hanselmann |
|
619 | 06c9a520 | Michael Hanselmann | @see: L{_GetNodeInfo} and L{_ParseNodeInfo}
|
620 | 65a6f9b7 | Michael Hanselmann |
|
621 | 65a6f9b7 | Michael Hanselmann | """
|
622 | 398fd4f6 | Helga Velroyen | result = self._RunXen(["info"], hvparams) |
623 | 65a6f9b7 | Michael Hanselmann | if result.failed:
|
624 | 2609da63 | Helga Velroyen | logging.error("Can't retrieve xen hypervisor information (%s): %s",
|
625 | 2609da63 | Helga Velroyen | result.fail_reason, result.output) |
626 | 65a6f9b7 | Michael Hanselmann | return None |
627 | 65a6f9b7 | Michael Hanselmann | |
628 | 398fd4f6 | Helga Velroyen | instance_list = self._GetInstanceList(True, hvparams) |
629 | fac489a5 | Helga Velroyen | return _GetNodeInfo(result.stdout, instance_list)
|
630 | 65a6f9b7 | Michael Hanselmann | |
631 | 637ce7f9 | Guido Trotter | @classmethod
|
632 | 55cc0a44 | Michael Hanselmann | def GetInstanceConsole(cls, instance, hvparams, beparams): |
633 | 65a6f9b7 | Michael Hanselmann | """Return a command for connecting to the console of an instance.
|
634 | 65a6f9b7 | Michael Hanselmann |
|
635 | 65a6f9b7 | Michael Hanselmann | """
|
636 | 55cc0a44 | Michael Hanselmann | return objects.InstanceConsole(instance=instance.name,
|
637 | 55cc0a44 | Michael Hanselmann | kind=constants.CONS_SSH, |
638 | 55cc0a44 | Michael Hanselmann | host=instance.primary_node, |
639 | 052783ff | Michael Hanselmann | user=constants.SSH_CONSOLE_USER, |
640 | b9612abb | Iustin Pop | command=[pathutils.XEN_CONSOLE_WRAPPER, |
641 | 1f5557ca | Guido Trotter | constants.XEN_CMD, instance.name]) |
642 | 65a6f9b7 | Michael Hanselmann | |
643 | 75bf3149 | Helga Velroyen | def Verify(self, hvparams=None): |
644 | 65a6f9b7 | Michael Hanselmann | """Verify the hypervisor.
|
645 | 65a6f9b7 | Michael Hanselmann |
|
646 | 65a6f9b7 | Michael Hanselmann | For Xen, this verifies that the xend process is running.
|
647 | 65a6f9b7 | Michael Hanselmann |
|
648 | 75bf3149 | Helga Velroyen | @type hvparams: dict of strings
|
649 | 75bf3149 | Helga Velroyen | @param hvparams: hypervisor parameters to be verified against
|
650 | 75bf3149 | Helga Velroyen |
|
651 | cd04dfd2 | Michael Hanselmann | @return: Problem description if something is wrong, C{None} otherwise
|
652 | cd04dfd2 | Michael Hanselmann |
|
653 | 65a6f9b7 | Michael Hanselmann | """
|
654 | 75bf3149 | Helga Velroyen | if hvparams is None: |
655 | 75bf3149 | Helga Velroyen | return "Could not verify the hypervisor, because no hvparams were" \ |
656 | 75bf3149 | Helga Velroyen | " provided."
|
657 | 75bf3149 | Helga Velroyen | |
658 | 75bf3149 | Helga Velroyen | if constants.HV_XEN_CMD in hvparams: |
659 | 75bf3149 | Helga Velroyen | xen_cmd = hvparams[constants.HV_XEN_CMD] |
660 | 75bf3149 | Helga Velroyen | try:
|
661 | 75bf3149 | Helga Velroyen | self._CheckToolstack(xen_cmd)
|
662 | 75bf3149 | Helga Velroyen | except errors.HypervisorError:
|
663 | 75bf3149 | Helga Velroyen | return "The configured xen toolstack '%s' is not available on this" \ |
664 | 75bf3149 | Helga Velroyen | " node." % xen_cmd
|
665 | 75bf3149 | Helga Velroyen | |
666 | 398fd4f6 | Helga Velroyen | result = self._RunXen(["info"], hvparams) |
667 | e3e66f02 | Michael Hanselmann | if result.failed:
|
668 | 75bf3149 | Helga Velroyen | return "Retrieving information from xen failed: %s, %s" % \ |
669 | 75bf3149 | Helga Velroyen | (result.fail_reason, result.output) |
670 | 65a6f9b7 | Michael Hanselmann | |
671 | cd04dfd2 | Michael Hanselmann | return None |
672 | cd04dfd2 | Michael Hanselmann | |
673 | 4390ccff | Guido Trotter | def MigrationInfo(self, instance): |
674 | 4390ccff | Guido Trotter | """Get instance information to perform a migration.
|
675 | 4390ccff | Guido Trotter |
|
676 | 4390ccff | Guido Trotter | @type instance: L{objects.Instance}
|
677 | 4390ccff | Guido Trotter | @param instance: instance to be migrated
|
678 | 4390ccff | Guido Trotter | @rtype: string
|
679 | 4390ccff | Guido Trotter | @return: content of the xen config file
|
680 | 4390ccff | Guido Trotter |
|
681 | 4390ccff | Guido Trotter | """
|
682 | 4390ccff | Guido Trotter | return self._ReadConfigFile(instance.name) |
683 | 4390ccff | Guido Trotter | |
684 | 4390ccff | Guido Trotter | def AcceptInstance(self, instance, info, target): |
685 | 4390ccff | Guido Trotter | """Prepare to accept an instance.
|
686 | 4390ccff | Guido Trotter |
|
687 | 4390ccff | Guido Trotter | @type instance: L{objects.Instance}
|
688 | 4390ccff | Guido Trotter | @param instance: instance to be accepted
|
689 | 4390ccff | Guido Trotter | @type info: string
|
690 | 4390ccff | Guido Trotter | @param info: content of the xen config file on the source node
|
691 | 4390ccff | Guido Trotter | @type target: string
|
692 | 4390ccff | Guido Trotter | @param target: target host (usually ip), on this node
|
693 | 4390ccff | Guido Trotter |
|
694 | 4390ccff | Guido Trotter | """
|
695 | 4390ccff | Guido Trotter | pass
|
696 | 4390ccff | Guido Trotter | |
697 | 60af751d | Andrea Spadaccini | def FinalizeMigrationDst(self, instance, info, success): |
698 | 4390ccff | Guido Trotter | """Finalize an instance migration.
|
699 | 4390ccff | Guido Trotter |
|
700 | 4390ccff | Guido Trotter | After a successful migration we write the xen config file.
|
701 | 4390ccff | Guido Trotter | We do nothing on a failure, as we did not change anything at accept time.
|
702 | 4390ccff | Guido Trotter |
|
703 | 4390ccff | Guido Trotter | @type instance: L{objects.Instance}
|
704 | fea922fa | Guido Trotter | @param instance: instance whose migration is being finalized
|
705 | 4390ccff | Guido Trotter | @type info: string
|
706 | 4390ccff | Guido Trotter | @param info: content of the xen config file on the source node
|
707 | 4390ccff | Guido Trotter | @type success: boolean
|
708 | 4390ccff | Guido Trotter | @param success: whether the migration was a success or a failure
|
709 | 4390ccff | Guido Trotter |
|
710 | 4390ccff | Guido Trotter | """
|
711 | 4390ccff | Guido Trotter | if success:
|
712 | c3d839f5 | Michael Hanselmann | self._WriteConfigFile(instance.name, info)
|
713 | 4390ccff | Guido Trotter | |
714 | 6e7275c0 | Iustin Pop | def MigrateInstance(self, instance, target, live): |
715 | 6e7275c0 | Iustin Pop | """Migrate an instance to a target node.
|
716 | 6e7275c0 | Iustin Pop |
|
717 | 6e7275c0 | Iustin Pop | The migration will not be attempted if the instance is not
|
718 | 6e7275c0 | Iustin Pop | currently running.
|
719 | 6e7275c0 | Iustin Pop |
|
720 | 58d38b02 | Iustin Pop | @type instance: L{objects.Instance}
|
721 | 58d38b02 | Iustin Pop | @param instance: the instance to be migrated
|
722 | fdf7f055 | Guido Trotter | @type target: string
|
723 | fdf7f055 | Guido Trotter | @param target: ip address of the target node
|
724 | fdf7f055 | Guido Trotter | @type live: boolean
|
725 | fdf7f055 | Guido Trotter | @param live: perform a live migration
|
726 | fdf7f055 | Guido Trotter |
|
727 | 6e7275c0 | Iustin Pop | """
|
728 | d8784f7d | Michael Hanselmann | port = instance.hvparams[constants.HV_MIGRATION_PORT] |
729 | d8784f7d | Michael Hanselmann | |
730 | d8784f7d | Michael Hanselmann | # TODO: Pass cluster name via RPC
|
731 | d8784f7d | Michael Hanselmann | cluster_name = ssconf.SimpleStore().GetClusterName() |
732 | d8784f7d | Michael Hanselmann | |
733 | d8784f7d | Michael Hanselmann | return self._MigrateInstance(cluster_name, instance.name, target, port, |
734 | 8351df2f | Helga Velroyen | live, instance.hvparams) |
735 | d8784f7d | Michael Hanselmann | |
736 | d8784f7d | Michael Hanselmann | def _MigrateInstance(self, cluster_name, instance_name, target, port, live, |
737 | 8351df2f | Helga Velroyen | hvparams, _ping_fn=netutils.TcpPing): |
738 | d8784f7d | Michael Hanselmann | """Migrate an instance to a target node.
|
739 | d8784f7d | Michael Hanselmann |
|
740 | d8784f7d | Michael Hanselmann | @see: L{MigrateInstance} for details
|
741 | d8784f7d | Michael Hanselmann |
|
742 | d8784f7d | Michael Hanselmann | """
|
743 | 8351df2f | Helga Velroyen | if hvparams is None: |
744 | 8351df2f | Helga Velroyen | raise errors.HypervisorError("No hvparams provided.") |
745 | 8351df2f | Helga Velroyen | |
746 | 8351df2f | Helga Velroyen | if self.GetInstanceInfo(instance_name, hvparams=hvparams) is None: |
747 | 6e7275c0 | Iustin Pop | raise errors.HypervisorError("Instance not running, cannot migrate") |
748 | 50716be0 | Iustin Pop | |
749 | 398fd4f6 | Helga Velroyen | cmd = self._GetCommand(hvparams)
|
750 | 50716be0 | Iustin Pop | |
751 | d8784f7d | Michael Hanselmann | if (cmd == constants.XEN_CMD_XM and |
752 | d8784f7d | Michael Hanselmann | not _ping_fn(target, port, live_port_needed=True)): |
753 | 50716be0 | Iustin Pop | raise errors.HypervisorError("Remote host %s not listening on port" |
754 | 50716be0 | Iustin Pop | " %s, cannot migrate" % (target, port))
|
755 | 50716be0 | Iustin Pop | |
756 | 3d942d8b | Michael Hanselmann | args = ["migrate"]
|
757 | 3d942d8b | Michael Hanselmann | |
758 | d8784f7d | Michael Hanselmann | if cmd == constants.XEN_CMD_XM:
|
759 | 0625d08f | René Nussbaumer | args.extend(["-p", "%d" % port]) |
760 | 0625d08f | René Nussbaumer | if live:
|
761 | 0625d08f | René Nussbaumer | args.append("-l")
|
762 | 3d942d8b | Michael Hanselmann | |
763 | d8784f7d | Michael Hanselmann | elif cmd == constants.XEN_CMD_XL:
|
764 | d8784f7d | Michael Hanselmann | args.extend([ |
765 | d8784f7d | Michael Hanselmann | "-s", constants.XL_SSH_CMD % cluster_name,
|
766 | d8784f7d | Michael Hanselmann | "-C", self._ConfigFileName(instance_name), |
767 | d8784f7d | Michael Hanselmann | ]) |
768 | 3d942d8b | Michael Hanselmann | |
769 | 0625d08f | René Nussbaumer | else:
|
770 | d8784f7d | Michael Hanselmann | raise errors.HypervisorError("Unsupported Xen command: %s" % self._cmd) |
771 | 0625d08f | René Nussbaumer | |
772 | d8784f7d | Michael Hanselmann | args.extend([instance_name, target]) |
773 | 3d942d8b | Michael Hanselmann | |
774 | 398fd4f6 | Helga Velroyen | result = self._RunXen(args, hvparams)
|
775 | 6e7275c0 | Iustin Pop | if result.failed:
|
776 | 6e7275c0 | Iustin Pop | raise errors.HypervisorError("Failed to migrate instance %s: %s" % |
777 | d8784f7d | Michael Hanselmann | (instance_name, result.output)) |
778 | 60af751d | Andrea Spadaccini | |
779 | 60af751d | Andrea Spadaccini | def FinalizeMigrationSource(self, instance, success, live): |
780 | 60af751d | Andrea Spadaccini | """Finalize the instance migration on the source node.
|
781 | 60af751d | Andrea Spadaccini |
|
782 | 60af751d | Andrea Spadaccini | @type instance: L{objects.Instance}
|
783 | 60af751d | Andrea Spadaccini | @param instance: the instance that was migrated
|
784 | 60af751d | Andrea Spadaccini | @type success: bool
|
785 | 60af751d | Andrea Spadaccini | @param success: whether the migration succeeded or not
|
786 | 60af751d | Andrea Spadaccini | @type live: bool
|
787 | 60af751d | Andrea Spadaccini | @param live: whether the user requested a live migration or not
|
788 | 60af751d | Andrea Spadaccini |
|
789 | 60af751d | Andrea Spadaccini | """
|
790 | 60af751d | Andrea Spadaccini | # pylint: disable=W0613
|
791 | 60af751d | Andrea Spadaccini | if success:
|
792 | 60af751d | Andrea Spadaccini | # remove old xen file after migration succeeded
|
793 | 60af751d | Andrea Spadaccini | try:
|
794 | 60af751d | Andrea Spadaccini | self._RemoveConfigFile(instance.name)
|
795 | 60af751d | Andrea Spadaccini | except EnvironmentError: |
796 | 60af751d | Andrea Spadaccini | logging.exception("Failure while removing instance config file")
|
797 | 60af751d | Andrea Spadaccini | |
798 | 60af751d | Andrea Spadaccini | def GetMigrationStatus(self, instance): |
799 | 60af751d | Andrea Spadaccini | """Get the migration status
|
800 | 60af751d | Andrea Spadaccini |
|
801 | 60af751d | Andrea Spadaccini | As MigrateInstance for Xen is still blocking, if this method is called it
|
802 | 60af751d | Andrea Spadaccini | means that MigrateInstance has completed successfully. So we can safely
|
803 | 60af751d | Andrea Spadaccini | assume that the migration was successful and notify this fact to the client.
|
804 | 60af751d | Andrea Spadaccini |
|
805 | 60af751d | Andrea Spadaccini | @type instance: L{objects.Instance}
|
806 | 60af751d | Andrea Spadaccini | @param instance: the instance that is being migrated
|
807 | 60af751d | Andrea Spadaccini | @rtype: L{objects.MigrationStatus}
|
808 | 60af751d | Andrea Spadaccini | @return: the status of the current migration (one of
|
809 | 60af751d | Andrea Spadaccini | L{constants.HV_MIGRATION_VALID_STATUSES}), plus any additional
|
810 | 60af751d | Andrea Spadaccini | progress info that can be retrieved from the hypervisor
|
811 | 60af751d | Andrea Spadaccini |
|
812 | 60af751d | Andrea Spadaccini | """
|
813 | 60af751d | Andrea Spadaccini | return objects.MigrationStatus(status=constants.HV_MIGRATION_COMPLETED)
|
814 | 6e7275c0 | Iustin Pop | |
815 | f5118ade | Iustin Pop | @classmethod
|
816 | f5118ade | Iustin Pop | def PowercycleNode(cls): |
817 | f5118ade | Iustin Pop | """Xen-specific powercycle.
|
818 | f5118ade | Iustin Pop |
|
819 | f5118ade | Iustin Pop | This first does a Linux reboot (which triggers automatically a Xen
|
820 | f5118ade | Iustin Pop | reboot), and if that fails it tries to do a Xen reboot. The reason
|
821 | f5118ade | Iustin Pop | we don't try a Xen reboot first is that the xen reboot launches an
|
822 | f5118ade | Iustin Pop | external command which connects to the Xen hypervisor, and that
|
823 | f5118ade | Iustin Pop | won't work in case the root filesystem is broken and/or the xend
|
824 | f5118ade | Iustin Pop | daemon is not working.
|
825 | f5118ade | Iustin Pop |
|
826 | f5118ade | Iustin Pop | """
|
827 | f5118ade | Iustin Pop | try:
|
828 | f5118ade | Iustin Pop | cls.LinuxPowercycle() |
829 | f5118ade | Iustin Pop | finally:
|
830 | 2876c2d6 | Guido Trotter | utils.RunCmd([constants.XEN_CMD, "debug", "R"]) |
831 | f5118ade | Iustin Pop | |
832 | 75bf3149 | Helga Velroyen | def _CheckToolstack(self, xen_cmd): |
833 | 75bf3149 | Helga Velroyen | """Check whether the given toolstack is available on the node.
|
834 | 75bf3149 | Helga Velroyen |
|
835 | 75bf3149 | Helga Velroyen | @type xen_cmd: string
|
836 | 75bf3149 | Helga Velroyen | @param xen_cmd: xen command (e.g. 'xm' or 'xl')
|
837 | 75bf3149 | Helga Velroyen |
|
838 | 75bf3149 | Helga Velroyen | """
|
839 | 75bf3149 | Helga Velroyen | binary_found = self._CheckToolstackBinary(xen_cmd)
|
840 | 75bf3149 | Helga Velroyen | if not binary_found: |
841 | 75bf3149 | Helga Velroyen | raise errors.HypervisorError("No '%s' binary found on node." % xen_cmd) |
842 | 75bf3149 | Helga Velroyen | elif xen_cmd == constants.XEN_CMD_XL:
|
843 | 75bf3149 | Helga Velroyen | if not self._CheckToolstackXlConfigured(): |
844 | 75bf3149 | Helga Velroyen | raise errors.HypervisorError("Toolstack '%s' is not enabled on this" |
845 | 75bf3149 | Helga Velroyen | "node." % xen_cmd)
|
846 | 75bf3149 | Helga Velroyen | |
847 | 75bf3149 | Helga Velroyen | def _CheckToolstackBinary(self, xen_cmd): |
848 | 75bf3149 | Helga Velroyen | """Checks whether the xen command's binary is found on the machine.
|
849 | 75bf3149 | Helga Velroyen |
|
850 | 75bf3149 | Helga Velroyen | """
|
851 | 75bf3149 | Helga Velroyen | if xen_cmd not in constants.KNOWN_XEN_COMMANDS: |
852 | 75bf3149 | Helga Velroyen | raise errors.HypervisorError("Unknown xen command '%s'." % xen_cmd) |
853 | 75bf3149 | Helga Velroyen | result = self._run_cmd_fn(["which", xen_cmd]) |
854 | 75bf3149 | Helga Velroyen | return not result.failed |
855 | 75bf3149 | Helga Velroyen | |
856 | 75bf3149 | Helga Velroyen | def _CheckToolstackXlConfigured(self): |
857 | 75bf3149 | Helga Velroyen | """Checks whether xl is enabled on an xl-capable node.
|
858 | 75bf3149 | Helga Velroyen |
|
859 | 75bf3149 | Helga Velroyen | @rtype: bool
|
860 | 75bf3149 | Helga Velroyen | @returns: C{True} if 'xl' is enabled, C{False} otherwise
|
861 | 75bf3149 | Helga Velroyen |
|
862 | 75bf3149 | Helga Velroyen | """
|
863 | 75bf3149 | Helga Velroyen | result = self._run_cmd_fn([constants.XEN_CMD_XL, "help"]) |
864 | 75bf3149 | Helga Velroyen | if not result.failed: |
865 | 75bf3149 | Helga Velroyen | return True |
866 | 75bf3149 | Helga Velroyen | elif result.failed:
|
867 | 75bf3149 | Helga Velroyen | if "toolstack" in result.stderr: |
868 | 75bf3149 | Helga Velroyen | return False |
869 | 75bf3149 | Helga Velroyen | # xl fails for some other reason than the toolstack
|
870 | 75bf3149 | Helga Velroyen | else:
|
871 | 75bf3149 | Helga Velroyen | raise errors.HypervisorError("Cannot run xen ('%s'). Error: %s." |
872 | 75bf3149 | Helga Velroyen | % (constants.XEN_CMD_XL, result.stderr)) |
873 | 75bf3149 | Helga Velroyen | |
874 | 65a6f9b7 | Michael Hanselmann | |
875 | 65a6f9b7 | Michael Hanselmann | class XenPvmHypervisor(XenHypervisor): |
876 | 65a6f9b7 | Michael Hanselmann | """Xen PVM hypervisor interface"""
|
877 | 65a6f9b7 | Michael Hanselmann | |
878 | 205ab586 | Iustin Pop | PARAMETERS = { |
879 | 2f2dbb4b | Jun Futagawa | constants.HV_USE_BOOTLOADER: hv_base.NO_CHECK, |
880 | 2f2dbb4b | Jun Futagawa | constants.HV_BOOTLOADER_PATH: hv_base.OPT_FILE_CHECK, |
881 | 2f2dbb4b | Jun Futagawa | constants.HV_BOOTLOADER_ARGS: hv_base.NO_CHECK, |
882 | 205ab586 | Iustin Pop | constants.HV_KERNEL_PATH: hv_base.REQ_FILE_CHECK, |
883 | 205ab586 | Iustin Pop | constants.HV_INITRD_PATH: hv_base.OPT_FILE_CHECK, |
884 | 7adf7814 | René Nussbaumer | constants.HV_ROOT_PATH: hv_base.NO_CHECK, |
885 | 205ab586 | Iustin Pop | constants.HV_KERNEL_ARGS: hv_base.NO_CHECK, |
886 | e2d14329 | Andrea Spadaccini | constants.HV_MIGRATION_PORT: hv_base.REQ_NET_PORT_CHECK, |
887 | 783a6c0b | Iustin Pop | constants.HV_MIGRATION_MODE: hv_base.MIGRATION_MODE_CHECK, |
888 | 525011bc | Maciej Bliziński | # TODO: Add a check for the blockdev prefix (matching [a-z:] or similar).
|
889 | 525011bc | Maciej Bliziński | constants.HV_BLOCKDEV_PREFIX: hv_base.NO_CHECK, |
890 | 990ade2d | Stephen Shirley | constants.HV_REBOOT_BEHAVIOR: |
891 | c4708267 | Tsachy Shacham | hv_base.ParamInSet(True, constants.REBOOT_BEHAVIORS),
|
892 | c4708267 | Tsachy Shacham | constants.HV_CPU_MASK: hv_base.OPT_MULTI_CPU_MASK_CHECK, |
893 | 2c368f28 | Guido Trotter | constants.HV_CPU_CAP: hv_base.OPT_NONNEGATIVE_INT_CHECK, |
894 | 8bd977e9 | Sébastien Bocahu | constants.HV_CPU_WEIGHT: |
895 | 8bd977e9 | Sébastien Bocahu | (False, lambda x: 0 < x < 65536, "invalid weight", None, None), |
896 | 740394bc | Helga Velroyen | constants.HV_XEN_CMD: |
897 | 740394bc | Helga Velroyen | hv_base.ParamInSet(True, constants.KNOWN_XEN_COMMANDS),
|
898 | 205ab586 | Iustin Pop | } |
899 | f48148c3 | Iustin Pop | |
900 | c3d839f5 | Michael Hanselmann | def _GetConfig(self, instance, startup_memory, block_devices): |
901 | 65a6f9b7 | Michael Hanselmann | """Write the Xen config file for the instance.
|
902 | 65a6f9b7 | Michael Hanselmann |
|
903 | 65a6f9b7 | Michael Hanselmann | """
|
904 | a985b417 | Iustin Pop | hvp = instance.hvparams |
905 | 65a6f9b7 | Michael Hanselmann | config = StringIO() |
906 | 65a6f9b7 | Michael Hanselmann | config.write("# this is autogenerated by Ganeti, please do not edit\n#\n")
|
907 | 65a6f9b7 | Michael Hanselmann | |
908 | 2f2dbb4b | Jun Futagawa | # if bootloader is True, use bootloader instead of kernel and ramdisk
|
909 | 2f2dbb4b | Jun Futagawa | # parameters.
|
910 | 2f2dbb4b | Jun Futagawa | if hvp[constants.HV_USE_BOOTLOADER]:
|
911 | 2f2dbb4b | Jun Futagawa | # bootloader handling
|
912 | 2f2dbb4b | Jun Futagawa | bootloader_path = hvp[constants.HV_BOOTLOADER_PATH] |
913 | 2f2dbb4b | Jun Futagawa | if bootloader_path:
|
914 | 2f2dbb4b | Jun Futagawa | config.write("bootloader = '%s'\n" % bootloader_path)
|
915 | 2f2dbb4b | Jun Futagawa | else:
|
916 | 2f2dbb4b | Jun Futagawa | raise errors.HypervisorError("Bootloader enabled, but missing" |
917 | 2f2dbb4b | Jun Futagawa | " bootloader path")
|
918 | 65a6f9b7 | Michael Hanselmann | |
919 | 2f2dbb4b | Jun Futagawa | bootloader_args = hvp[constants.HV_BOOTLOADER_ARGS] |
920 | 2f2dbb4b | Jun Futagawa | if bootloader_args:
|
921 | 2f2dbb4b | Jun Futagawa | config.write("bootargs = '%s'\n" % bootloader_args)
|
922 | 2f2dbb4b | Jun Futagawa | else:
|
923 | 2f2dbb4b | Jun Futagawa | # kernel handling
|
924 | 2f2dbb4b | Jun Futagawa | kpath = hvp[constants.HV_KERNEL_PATH] |
925 | 2f2dbb4b | Jun Futagawa | config.write("kernel = '%s'\n" % kpath)
|
926 | 2f2dbb4b | Jun Futagawa | |
927 | 2f2dbb4b | Jun Futagawa | # initrd handling
|
928 | 2f2dbb4b | Jun Futagawa | initrd_path = hvp[constants.HV_INITRD_PATH] |
929 | 2f2dbb4b | Jun Futagawa | if initrd_path:
|
930 | 2f2dbb4b | Jun Futagawa | config.write("ramdisk = '%s'\n" % initrd_path)
|
931 | 65a6f9b7 | Michael Hanselmann | |
932 | 65a6f9b7 | Michael Hanselmann | # rest of the settings
|
933 | 61eb1a46 | Guido Trotter | config.write("memory = %d\n" % startup_memory)
|
934 | 80121c83 | Guido Trotter | config.write("maxmem = %d\n" % instance.beparams[constants.BE_MAXMEM])
|
935 | 8b3fd458 | Iustin Pop | config.write("vcpus = %d\n" % instance.beparams[constants.BE_VCPUS])
|
936 | 347fa0f1 | Michael Hanselmann | cpu_pinning = _CreateConfigCpus(hvp[constants.HV_CPU_MASK]) |
937 | c4708267 | Tsachy Shacham | if cpu_pinning:
|
938 | c4708267 | Tsachy Shacham | config.write("%s\n" % cpu_pinning)
|
939 | 8bd977e9 | Sébastien Bocahu | cpu_cap = hvp[constants.HV_CPU_CAP] |
940 | 8bd977e9 | Sébastien Bocahu | if cpu_cap:
|
941 | 8bd977e9 | Sébastien Bocahu | config.write("cpu_cap=%d\n" % cpu_cap)
|
942 | 8bd977e9 | Sébastien Bocahu | cpu_weight = hvp[constants.HV_CPU_WEIGHT] |
943 | 8bd977e9 | Sébastien Bocahu | if cpu_weight:
|
944 | 8bd977e9 | Sébastien Bocahu | config.write("cpu_weight=%d\n" % cpu_weight)
|
945 | c4708267 | Tsachy Shacham | |
946 | 65a6f9b7 | Michael Hanselmann | config.write("name = '%s'\n" % instance.name)
|
947 | 65a6f9b7 | Michael Hanselmann | |
948 | 65a6f9b7 | Michael Hanselmann | vif_data = [] |
949 | 65a6f9b7 | Michael Hanselmann | for nic in instance.nics: |
950 | 503b97a9 | Guido Trotter | nic_str = "mac=%s" % (nic.mac)
|
951 | 65a6f9b7 | Michael Hanselmann | ip = getattr(nic, "ip", None) |
952 | 65a6f9b7 | Michael Hanselmann | if ip is not None: |
953 | 65a6f9b7 | Michael Hanselmann | nic_str += ", ip=%s" % ip
|
954 | 503b97a9 | Guido Trotter | if nic.nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
|
955 | 503b97a9 | Guido Trotter | nic_str += ", bridge=%s" % nic.nicparams[constants.NIC_LINK]
|
956 | 0183a697 | Alessandro Cincaglini | vif_data.append("'%s'" % nic_str)
|
957 | 65a6f9b7 | Michael Hanselmann | |
958 | d0bb3f24 | Michael Hanselmann | disk_data = \ |
959 | d0bb3f24 | Michael Hanselmann | _GetConfigFileDiskData(block_devices, hvp[constants.HV_BLOCKDEV_PREFIX]) |
960 | 7ed85ffe | Iustin Pop | |
961 | 65a6f9b7 | Michael Hanselmann | config.write("vif = [%s]\n" % ",".join(vif_data)) |
962 | 7ed85ffe | Iustin Pop | config.write("disk = [%s]\n" % ",".join(disk_data)) |
963 | 074ca009 | Guido Trotter | |
964 | 7adf7814 | René Nussbaumer | if hvp[constants.HV_ROOT_PATH]:
|
965 | 7adf7814 | René Nussbaumer | config.write("root = '%s'\n" % hvp[constants.HV_ROOT_PATH])
|
966 | 65a6f9b7 | Michael Hanselmann | config.write("on_poweroff = 'destroy'\n")
|
967 | 990ade2d | Stephen Shirley | if hvp[constants.HV_REBOOT_BEHAVIOR] == constants.INSTANCE_REBOOT_ALLOWED:
|
968 | 990ade2d | Stephen Shirley | config.write("on_reboot = 'restart'\n")
|
969 | 990ade2d | Stephen Shirley | else:
|
970 | 990ade2d | Stephen Shirley | config.write("on_reboot = 'destroy'\n")
|
971 | 65a6f9b7 | Michael Hanselmann | config.write("on_crash = 'restart'\n")
|
972 | 07813a9e | Iustin Pop | config.write("extra = '%s'\n" % hvp[constants.HV_KERNEL_ARGS])
|
973 | 73cd67f4 | Guido Trotter | |
974 | c3d839f5 | Michael Hanselmann | return config.getvalue()
|
975 | 65a6f9b7 | Michael Hanselmann | |
976 | 65a6f9b7 | Michael Hanselmann | |
977 | 65a6f9b7 | Michael Hanselmann | class XenHvmHypervisor(XenHypervisor): |
978 | 65a6f9b7 | Michael Hanselmann | """Xen HVM hypervisor interface"""
|
979 | 65a6f9b7 | Michael Hanselmann | |
980 | 69b99987 | Michael Hanselmann | ANCILLARY_FILES = XenHypervisor.ANCILLARY_FILES + [ |
981 | 9d9bded1 | Michael Hanselmann | pathutils.VNC_PASSWORD_FILE, |
982 | 69b99987 | Michael Hanselmann | ] |
983 | 69ab2e12 | Guido Trotter | ANCILLARY_FILES_OPT = XenHypervisor.ANCILLARY_FILES_OPT + [ |
984 | 9d9bded1 | Michael Hanselmann | pathutils.VNC_PASSWORD_FILE, |
985 | 69ab2e12 | Guido Trotter | ] |
986 | 3680f662 | Guido Trotter | |
987 | 205ab586 | Iustin Pop | PARAMETERS = { |
988 | 205ab586 | Iustin Pop | constants.HV_ACPI: hv_base.NO_CHECK, |
989 | 016d04b3 | Michael Hanselmann | constants.HV_BOOT_ORDER: (True, ) +
|
990 | 016d04b3 | Michael Hanselmann | (lambda x: x and len(x.strip("acdn")) == 0, |
991 | 016d04b3 | Michael Hanselmann | "Invalid boot order specified, must be one or more of [acdn]",
|
992 | 016d04b3 | Michael Hanselmann | None, None), |
993 | 205ab586 | Iustin Pop | constants.HV_CDROM_IMAGE_PATH: hv_base.OPT_FILE_CHECK, |
994 | 016d04b3 | Michael Hanselmann | constants.HV_DISK_TYPE: |
995 | 016d04b3 | Michael Hanselmann | hv_base.ParamInSet(True, constants.HT_HVM_VALID_DISK_TYPES),
|
996 | 016d04b3 | Michael Hanselmann | constants.HV_NIC_TYPE: |
997 | 016d04b3 | Michael Hanselmann | hv_base.ParamInSet(True, constants.HT_HVM_VALID_NIC_TYPES),
|
998 | 205ab586 | Iustin Pop | constants.HV_PAE: hv_base.NO_CHECK, |
999 | 016d04b3 | Michael Hanselmann | constants.HV_VNC_BIND_ADDRESS: |
1000 | 8b312c1d | Manuel Franceschini | (False, netutils.IP4Address.IsValid,
|
1001 | 016d04b3 | Michael Hanselmann | "VNC bind address is not a valid IP address", None, None), |
1002 | 205ab586 | Iustin Pop | constants.HV_KERNEL_PATH: hv_base.REQ_FILE_CHECK, |
1003 | 205ab586 | Iustin Pop | constants.HV_DEVICE_MODEL: hv_base.REQ_FILE_CHECK, |
1004 | 6e6bb8d5 | Guido Trotter | constants.HV_VNC_PASSWORD_FILE: hv_base.REQ_FILE_CHECK, |
1005 | e2d14329 | Andrea Spadaccini | constants.HV_MIGRATION_PORT: hv_base.REQ_NET_PORT_CHECK, |
1006 | 783a6c0b | Iustin Pop | constants.HV_MIGRATION_MODE: hv_base.MIGRATION_MODE_CHECK, |
1007 | 6b970cef | Jun Futagawa | constants.HV_USE_LOCALTIME: hv_base.NO_CHECK, |
1008 | e695efbf | Iustin Pop | # TODO: Add a check for the blockdev prefix (matching [a-z:] or similar).
|
1009 | e695efbf | Iustin Pop | constants.HV_BLOCKDEV_PREFIX: hv_base.NO_CHECK, |
1010 | 87f0aa48 | Jack | # Add PCI passthrough
|
1011 | 3891c95e | Bernardo Dal Seno | constants.HV_PASSTHROUGH: hv_base.NO_CHECK, |
1012 | 990ade2d | Stephen Shirley | constants.HV_REBOOT_BEHAVIOR: |
1013 | c4708267 | Tsachy Shacham | hv_base.ParamInSet(True, constants.REBOOT_BEHAVIORS),
|
1014 | c4708267 | Tsachy Shacham | constants.HV_CPU_MASK: hv_base.OPT_MULTI_CPU_MASK_CHECK, |
1015 | 8bd977e9 | Sébastien Bocahu | constants.HV_CPU_CAP: hv_base.NO_CHECK, |
1016 | 8bd977e9 | Sébastien Bocahu | constants.HV_CPU_WEIGHT: |
1017 | 8bd977e9 | Sébastien Bocahu | (False, lambda x: 0 < x < 65535, "invalid weight", None, None), |
1018 | 05440845 | Helga Velroyen | constants.HV_VIF_TYPE: |
1019 | 05440845 | Helga Velroyen | hv_base.ParamInSet(False, constants.HT_HVM_VALID_VIF_TYPES),
|
1020 | 740394bc | Helga Velroyen | constants.HV_XEN_CMD: |
1021 | 740394bc | Helga Velroyen | hv_base.ParamInSet(True, constants.KNOWN_XEN_COMMANDS),
|
1022 | 205ab586 | Iustin Pop | } |
1023 | 09ea8710 | Iustin Pop | |
1024 | c3d839f5 | Michael Hanselmann | def _GetConfig(self, instance, startup_memory, block_devices): |
1025 | 65a6f9b7 | Michael Hanselmann | """Create a Xen 3.1 HVM config file.
|
1026 | 65a6f9b7 | Michael Hanselmann |
|
1027 | 65a6f9b7 | Michael Hanselmann | """
|
1028 | a985b417 | Iustin Pop | hvp = instance.hvparams |
1029 | a985b417 | Iustin Pop | |
1030 | 65a6f9b7 | Michael Hanselmann | config = StringIO() |
1031 | e2ee1cea | Iustin Pop | |
1032 | e2ee1cea | Iustin Pop | # kernel handling
|
1033 | e2ee1cea | Iustin Pop | kpath = hvp[constants.HV_KERNEL_PATH] |
1034 | e2ee1cea | Iustin Pop | config.write("kernel = '%s'\n" % kpath)
|
1035 | e2ee1cea | Iustin Pop | |
1036 | 65a6f9b7 | Michael Hanselmann | config.write("builder = 'hvm'\n")
|
1037 | 61eb1a46 | Guido Trotter | config.write("memory = %d\n" % startup_memory)
|
1038 | 80121c83 | Guido Trotter | config.write("maxmem = %d\n" % instance.beparams[constants.BE_MAXMEM])
|
1039 | 8b3fd458 | Iustin Pop | config.write("vcpus = %d\n" % instance.beparams[constants.BE_VCPUS])
|
1040 | 347fa0f1 | Michael Hanselmann | cpu_pinning = _CreateConfigCpus(hvp[constants.HV_CPU_MASK]) |
1041 | c4708267 | Tsachy Shacham | if cpu_pinning:
|
1042 | c4708267 | Tsachy Shacham | config.write("%s\n" % cpu_pinning)
|
1043 | 8bd977e9 | Sébastien Bocahu | cpu_cap = hvp[constants.HV_CPU_CAP] |
1044 | 8bd977e9 | Sébastien Bocahu | if cpu_cap:
|
1045 | 8bd977e9 | Sébastien Bocahu | config.write("cpu_cap=%d\n" % cpu_cap)
|
1046 | 8bd977e9 | Sébastien Bocahu | cpu_weight = hvp[constants.HV_CPU_WEIGHT] |
1047 | 8bd977e9 | Sébastien Bocahu | if cpu_weight:
|
1048 | 8bd977e9 | Sébastien Bocahu | config.write("cpu_weight=%d\n" % cpu_weight)
|
1049 | c4708267 | Tsachy Shacham | |
1050 | 65a6f9b7 | Michael Hanselmann | config.write("name = '%s'\n" % instance.name)
|
1051 | 09ea8710 | Iustin Pop | if hvp[constants.HV_PAE]:
|
1052 | a21dda8b | Iustin Pop | config.write("pae = 1\n")
|
1053 | a21dda8b | Iustin Pop | else:
|
1054 | a21dda8b | Iustin Pop | config.write("pae = 0\n")
|
1055 | 09ea8710 | Iustin Pop | if hvp[constants.HV_ACPI]:
|
1056 | a21dda8b | Iustin Pop | config.write("acpi = 1\n")
|
1057 | a21dda8b | Iustin Pop | else:
|
1058 | a21dda8b | Iustin Pop | config.write("acpi = 0\n")
|
1059 | 65a6f9b7 | Michael Hanselmann | config.write("apic = 1\n")
|
1060 | 09ea8710 | Iustin Pop | config.write("device_model = '%s'\n" % hvp[constants.HV_DEVICE_MODEL])
|
1061 | a985b417 | Iustin Pop | config.write("boot = '%s'\n" % hvp[constants.HV_BOOT_ORDER])
|
1062 | 65a6f9b7 | Michael Hanselmann | config.write("sdl = 0\n")
|
1063 | 97efde45 | Guido Trotter | config.write("usb = 1\n")
|
1064 | 97efde45 | Guido Trotter | config.write("usbdevice = 'tablet'\n")
|
1065 | 65a6f9b7 | Michael Hanselmann | config.write("vnc = 1\n")
|
1066 | a985b417 | Iustin Pop | if hvp[constants.HV_VNC_BIND_ADDRESS] is None: |
1067 | d0c11cf7 | Alexander Schreiber | config.write("vnclisten = '%s'\n" % constants.VNC_DEFAULT_BIND_ADDRESS)
|
1068 | d0c11cf7 | Alexander Schreiber | else:
|
1069 | 6b405598 | Guido Trotter | config.write("vnclisten = '%s'\n" % hvp[constants.HV_VNC_BIND_ADDRESS])
|
1070 | 65a6f9b7 | Michael Hanselmann | |
1071 | 377d74c9 | Guido Trotter | if instance.network_port > constants.VNC_BASE_PORT:
|
1072 | 377d74c9 | Guido Trotter | display = instance.network_port - constants.VNC_BASE_PORT |
1073 | 65a6f9b7 | Michael Hanselmann | config.write("vncdisplay = %s\n" % display)
|
1074 | 65a6f9b7 | Michael Hanselmann | config.write("vncunused = 0\n")
|
1075 | 65a6f9b7 | Michael Hanselmann | else:
|
1076 | 65a6f9b7 | Michael Hanselmann | config.write("# vncdisplay = 1\n")
|
1077 | 65a6f9b7 | Michael Hanselmann | config.write("vncunused = 1\n")
|
1078 | 65a6f9b7 | Michael Hanselmann | |
1079 | 6e6bb8d5 | Guido Trotter | vnc_pwd_file = hvp[constants.HV_VNC_PASSWORD_FILE] |
1080 | 65a6f9b7 | Michael Hanselmann | try:
|
1081 | 6e6bb8d5 | Guido Trotter | password = utils.ReadFile(vnc_pwd_file) |
1082 | 78f66a17 | Guido Trotter | except EnvironmentError, err: |
1083 | 78f66a17 | Guido Trotter | raise errors.HypervisorError("Failed to open VNC password file %s: %s" % |
1084 | 6e6bb8d5 | Guido Trotter | (vnc_pwd_file, err)) |
1085 | 65a6f9b7 | Michael Hanselmann | |
1086 | 65a6f9b7 | Michael Hanselmann | config.write("vncpasswd = '%s'\n" % password.rstrip())
|
1087 | 65a6f9b7 | Michael Hanselmann | |
1088 | 65a6f9b7 | Michael Hanselmann | config.write("serial = 'pty'\n")
|
1089 | 6b970cef | Jun Futagawa | if hvp[constants.HV_USE_LOCALTIME]:
|
1090 | 6b970cef | Jun Futagawa | config.write("localtime = 1\n")
|
1091 | 65a6f9b7 | Michael Hanselmann | |
1092 | 65a6f9b7 | Michael Hanselmann | vif_data = [] |
1093 | 05440845 | Helga Velroyen | # Note: what is called 'nic_type' here, is used as value for the xen nic
|
1094 | 05440845 | Helga Velroyen | # vif config parameter 'model'. For the xen nic vif parameter 'type', we use
|
1095 | 05440845 | Helga Velroyen | # the 'vif_type' to avoid a clash of notation.
|
1096 | a985b417 | Iustin Pop | nic_type = hvp[constants.HV_NIC_TYPE] |
1097 | 05440845 | Helga Velroyen | |
1098 | f48148c3 | Iustin Pop | if nic_type is None: |
1099 | 05440845 | Helga Velroyen | vif_type_str = ""
|
1100 | 05440845 | Helga Velroyen | if hvp[constants.HV_VIF_TYPE]:
|
1101 | 05440845 | Helga Velroyen | vif_type_str = ", type=%s" % hvp[constants.HV_VIF_TYPE]
|
1102 | f48148c3 | Iustin Pop | # ensure old instances don't change
|
1103 | 05440845 | Helga Velroyen | nic_type_str = vif_type_str |
1104 | d08f6067 | Guido Trotter | elif nic_type == constants.HT_NIC_PARAVIRTUAL:
|
1105 | f48148c3 | Iustin Pop | nic_type_str = ", type=paravirtualized"
|
1106 | f48148c3 | Iustin Pop | else:
|
1107 | 05440845 | Helga Velroyen | # parameter 'model' is only valid with type 'ioemu'
|
1108 | 05440845 | Helga Velroyen | nic_type_str = ", model=%s, type=%s" % \
|
1109 | 05440845 | Helga Velroyen | (nic_type, constants.HT_HVM_VIF_IOEMU) |
1110 | 65a6f9b7 | Michael Hanselmann | for nic in instance.nics: |
1111 | 503b97a9 | Guido Trotter | nic_str = "mac=%s%s" % (nic.mac, nic_type_str)
|
1112 | 65a6f9b7 | Michael Hanselmann | ip = getattr(nic, "ip", None) |
1113 | 65a6f9b7 | Michael Hanselmann | if ip is not None: |
1114 | 65a6f9b7 | Michael Hanselmann | nic_str += ", ip=%s" % ip
|
1115 | 503b97a9 | Guido Trotter | if nic.nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
|
1116 | 503b97a9 | Guido Trotter | nic_str += ", bridge=%s" % nic.nicparams[constants.NIC_LINK]
|
1117 | 0183a697 | Alessandro Cincaglini | vif_data.append("'%s'" % nic_str)
|
1118 | 65a6f9b7 | Michael Hanselmann | |
1119 | 65a6f9b7 | Michael Hanselmann | config.write("vif = [%s]\n" % ",".join(vif_data)) |
1120 | 525011bc | Maciej Bliziński | |
1121 | d0bb3f24 | Michael Hanselmann | disk_data = \ |
1122 | d0bb3f24 | Michael Hanselmann | _GetConfigFileDiskData(block_devices, hvp[constants.HV_BLOCKDEV_PREFIX]) |
1123 | 525011bc | Maciej Bliziński | |
1124 | a985b417 | Iustin Pop | iso_path = hvp[constants.HV_CDROM_IMAGE_PATH] |
1125 | f48148c3 | Iustin Pop | if iso_path:
|
1126 | f48148c3 | Iustin Pop | iso = "'file:%s,hdc:cdrom,r'" % iso_path
|
1127 | a21dda8b | Iustin Pop | disk_data.append(iso) |
1128 | a21dda8b | Iustin Pop | |
1129 | a21dda8b | Iustin Pop | config.write("disk = [%s]\n" % (",".join(disk_data))) |
1130 | 87f0aa48 | Jack | # Add PCI passthrough
|
1131 | 87f0aa48 | Jack | pci_pass_arr = [] |
1132 | 87f0aa48 | Jack | pci_pass = hvp[constants.HV_PASSTHROUGH] |
1133 | 87f0aa48 | Jack | if pci_pass:
|
1134 | 3891c95e | Bernardo Dal Seno | pci_pass_arr = pci_pass.split(";")
|
1135 | 3891c95e | Bernardo Dal Seno | config.write("pci = %s\n" % pci_pass_arr)
|
1136 | 65a6f9b7 | Michael Hanselmann | config.write("on_poweroff = 'destroy'\n")
|
1137 | 990ade2d | Stephen Shirley | if hvp[constants.HV_REBOOT_BEHAVIOR] == constants.INSTANCE_REBOOT_ALLOWED:
|
1138 | 990ade2d | Stephen Shirley | config.write("on_reboot = 'restart'\n")
|
1139 | 990ade2d | Stephen Shirley | else:
|
1140 | 990ade2d | Stephen Shirley | config.write("on_reboot = 'destroy'\n")
|
1141 | 65a6f9b7 | Michael Hanselmann | config.write("on_crash = 'restart'\n")
|
1142 | 73cd67f4 | Guido Trotter | |
1143 | c3d839f5 | Michael Hanselmann | return config.getvalue() |