Revision 65a6f9b7
b/Makefile.am | ||
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9 | 9 |
|
10 | 10 |
pre-check: ganeti |
11 | 11 |
$(MAKE) -C lib $@ |
12 |
$(MAKE) -C lib/hypervisor $@ |
|
12 | 13 |
|
13 | 14 |
# a dist hook rule for catching revision control directories |
14 | 15 |
distcheck-hook: |
b/configure.ac | ||
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117 | 117 |
doc/Makefile |
118 | 118 |
doc/examples/Makefile |
119 | 119 |
lib/Makefile |
120 |
lib/hypervisor/Makefile |
|
120 | 121 |
man/Makefile |
121 | 122 |
qa/Makefile |
122 | 123 |
qa/hooks/Makefile |
b/lib/Makefile.am | ||
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1 | 1 |
CLEANFILES = $(nodist_pkgpython_PYTHON) *.py[oc] |
2 |
SUBDIRS = hypervisor |
|
2 | 3 |
|
3 | 4 |
nodist_pkgpython_PYTHON = _autoconf.py |
4 | 5 |
pkgpython_PYTHON = __init__.py backend.py cli.py cmdlib.py config.py \ |
5 | 6 |
objects.py errors.py logger.py ssh.py utils.py rpc.py \ |
6 |
bdev.py hypervisor.py opcodes.py mcpu.py constants.py \
|
|
7 |
bdev.py opcodes.py mcpu.py constants.py \ |
|
7 | 8 |
ssconf.py locking.py luxi.py jqueue.py serializer.py |
8 | 9 |
python_files = $(pkgpython_PYTHON) |
9 | 10 |
|
b/lib/hypervisor/BaseHypervisor.py | ||
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1 |
# |
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2 |
# |
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3 |
|
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4 |
# Copyright (C) 2006, 2007, 2008 Google Inc. |
|
5 |
# |
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# This program is free software; you can redistribute it and/or modify |
|
7 |
# it under the terms of the GNU General Public License as published by |
|
8 |
# the Free Software Foundation; either version 2 of the License, or |
|
9 |
# (at your option) any later version. |
|
10 |
# |
|
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# This program is distributed in the hope that it will be useful, but |
|
12 |
# WITHOUT ANY WARRANTY; without even the implied warranty of |
|
13 |
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|
14 |
# General Public License for more details. |
|
15 |
# |
|
16 |
# You should have received a copy of the GNU General Public License |
|
17 |
# along with this program; if not, write to the Free Software |
|
18 |
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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19 |
# 02110-1301, USA. |
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20 |
|
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21 |
|
|
22 |
"""Base class for all hypervisors |
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23 |
|
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24 |
""" |
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25 |
|
|
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class BaseHypervisor(object): |
|
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"""Abstract virtualisation technology interface |
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|
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The goal is that all aspects of the virtualisation technology must |
|
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be abstracted away from the rest of code. |
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31 |
|
|
32 |
""" |
|
33 |
def __init__(self): |
|
34 |
pass |
|
35 |
|
|
36 |
def StartInstance(self, instance, block_devices, extra_args): |
|
37 |
"""Start an instance.""" |
|
38 |
raise NotImplementedError |
|
39 |
|
|
40 |
def StopInstance(self, instance, force=False): |
|
41 |
"""Stop an instance.""" |
|
42 |
raise NotImplementedError |
|
43 |
|
|
44 |
def RebootInstance(self, instance): |
|
45 |
"""Reboot an instance.""" |
|
46 |
raise NotImplementedError |
|
47 |
|
|
48 |
def ListInstances(self): |
|
49 |
"""Get the list of running instances.""" |
|
50 |
raise NotImplementedError |
|
51 |
|
|
52 |
def GetInstanceInfo(self, instance_name): |
|
53 |
"""Get instance properties. |
|
54 |
|
|
55 |
Args: |
|
56 |
instance_name: the instance name |
|
57 |
|
|
58 |
Returns: |
|
59 |
(name, id, memory, vcpus, state, times) |
|
60 |
|
|
61 |
""" |
|
62 |
raise NotImplementedError |
|
63 |
|
|
64 |
def GetAllInstancesInfo(self): |
|
65 |
"""Get properties of all instances. |
|
66 |
|
|
67 |
Returns: |
|
68 |
[(name, id, memory, vcpus, stat, times),...] |
|
69 |
""" |
|
70 |
raise NotImplementedError |
|
71 |
|
|
72 |
def GetNodeInfo(self): |
|
73 |
"""Return information about the node. |
|
74 |
|
|
75 |
The return value is a dict, which has to have the following items: |
|
76 |
(all values in MiB) |
|
77 |
- memory_total: the total memory size on the node |
|
78 |
- memory_free: the available memory on the node for instances |
|
79 |
- memory_dom0: the memory used by the node itself, if available |
|
80 |
|
|
81 |
""" |
|
82 |
raise NotImplementedError |
|
83 |
|
|
84 |
@staticmethod |
|
85 |
def GetShellCommandForConsole(instance): |
|
86 |
"""Return a command for connecting to the console of an instance. |
|
87 |
|
|
88 |
""" |
|
89 |
raise NotImplementedError |
|
90 |
|
|
91 |
def Verify(self): |
|
92 |
"""Verify the hypervisor. |
|
93 |
|
|
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""" |
|
95 |
raise NotImplementedError |
b/lib/hypervisor/FakeHypervisor.py | ||
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1 |
# |
|
2 |
# |
|
3 |
|
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4 |
# Copyright (C) 2006, 2007, 2008 Google Inc. |
|
5 |
# |
|
6 |
# This program is free software; you can redistribute it and/or modify |
|
7 |
# it under the terms of the GNU General Public License as published by |
|
8 |
# the Free Software Foundation; either version 2 of the License, or |
|
9 |
# (at your option) any later version. |
|
10 |
# |
|
11 |
# This program is distributed in the hope that it will be useful, but |
|
12 |
# WITHOUT ANY WARRANTY; without even the implied warranty of |
|
13 |
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|
14 |
# General Public License for more details. |
|
15 |
# |
|
16 |
# You should have received a copy of the GNU General Public License |
|
17 |
# along with this program; if not, write to the Free Software |
|
18 |
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
|
19 |
# 02110-1301, USA. |
|
20 |
|
|
21 |
|
|
22 |
"""Fake hypervisor |
|
23 |
|
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24 |
""" |
|
25 |
|
|
26 |
import os |
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27 |
import os.path |
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28 |
|
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29 |
from ganeti import utils |
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30 |
from ganeti import constants |
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31 |
from ganeti import errors |
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32 |
from ganeti.hypervisor import BaseHypervisor |
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33 |
|
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34 |
|
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35 |
class FakeHypervisor(BaseHypervisor.BaseHypervisor): |
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"""Fake hypervisor interface. |
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37 |
|
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38 |
This can be used for testing the ganeti code without having to have |
|
39 |
a real virtualisation software installed. |
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40 |
|
|
41 |
""" |
|
42 |
_ROOT_DIR = constants.RUN_DIR + "/ganeti-fake-hypervisor" |
|
43 |
|
|
44 |
def __init__(self): |
|
45 |
BaseHypervisor.__init__(self) |
|
46 |
if not os.path.exists(self._ROOT_DIR): |
|
47 |
os.mkdir(self._ROOT_DIR) |
|
48 |
|
|
49 |
def ListInstances(self): |
|
50 |
"""Get the list of running instances. |
|
51 |
|
|
52 |
""" |
|
53 |
return os.listdir(self._ROOT_DIR) |
|
54 |
|
|
55 |
def GetInstanceInfo(self, instance_name): |
|
56 |
"""Get instance properties. |
|
57 |
|
|
58 |
Args: |
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59 |
instance_name: the instance name |
|
60 |
|
|
61 |
Returns: |
|
62 |
(name, id, memory, vcpus, stat, times) |
|
63 |
""" |
|
64 |
file_name = "%s/%s" % (self._ROOT_DIR, instance_name) |
|
65 |
if not os.path.exists(file_name): |
|
66 |
return None |
|
67 |
try: |
|
68 |
fh = file(file_name, "r") |
|
69 |
try: |
|
70 |
inst_id = fh.readline().strip() |
|
71 |
memory = fh.readline().strip() |
|
72 |
vcpus = fh.readline().strip() |
|
73 |
stat = "---b-" |
|
74 |
times = "0" |
|
75 |
return (instance_name, inst_id, memory, vcpus, stat, times) |
|
76 |
finally: |
|
77 |
fh.close() |
|
78 |
except IOError, err: |
|
79 |
raise errors.HypervisorError("Failed to list instance %s: %s" % |
|
80 |
(instance_name, err)) |
|
81 |
|
|
82 |
def GetAllInstancesInfo(self): |
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83 |
"""Get properties of all instances. |
|
84 |
|
|
85 |
Returns: |
|
86 |
[(name, id, memory, vcpus, stat, times),...] |
|
87 |
""" |
|
88 |
data = [] |
|
89 |
for file_name in os.listdir(self._ROOT_DIR): |
|
90 |
try: |
|
91 |
fh = file(self._ROOT_DIR+"/"+file_name, "r") |
|
92 |
inst_id = "-1" |
|
93 |
memory = "0" |
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94 |
stat = "-----" |
|
95 |
times = "-1" |
|
96 |
try: |
|
97 |
inst_id = fh.readline().strip() |
|
98 |
memory = fh.readline().strip() |
|
99 |
vcpus = fh.readline().strip() |
|
100 |
stat = "---b-" |
|
101 |
times = "0" |
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102 |
finally: |
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103 |
fh.close() |
|
104 |
data.append((file_name, inst_id, memory, vcpus, stat, times)) |
|
105 |
except IOError, err: |
|
106 |
raise errors.HypervisorError("Failed to list instances: %s" % err) |
|
107 |
return data |
|
108 |
|
|
109 |
def StartInstance(self, instance, force, extra_args): |
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110 |
"""Start an instance. |
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111 |
|
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112 |
For the fake hypervisor, it just creates a file in the base dir, |
|
113 |
creating an exception if it already exists. We don't actually |
|
114 |
handle race conditions properly, since these are *FAKE* instances. |
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115 |
|
|
116 |
""" |
|
117 |
file_name = self._ROOT_DIR + "/%s" % instance.name |
|
118 |
if os.path.exists(file_name): |
|
119 |
raise errors.HypervisorError("Failed to start instance %s: %s" % |
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120 |
(instance.name, "already running")) |
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121 |
try: |
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122 |
fh = file(file_name, "w") |
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123 |
try: |
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124 |
fh.write("0\n%d\n%d\n" % (instance.memory, instance.vcpus)) |
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125 |
finally: |
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126 |
fh.close() |
|
127 |
except IOError, err: |
|
128 |
raise errors.HypervisorError("Failed to start instance %s: %s" % |
|
129 |
(instance.name, err)) |
|
130 |
|
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131 |
def StopInstance(self, instance, force=False): |
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132 |
"""Stop an instance. |
|
133 |
|
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134 |
For the fake hypervisor, this just removes the file in the base |
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135 |
dir, if it exist, otherwise we raise an exception. |
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136 |
|
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137 |
""" |
|
138 |
file_name = self._ROOT_DIR + "/%s" % instance.name |
|
139 |
if not os.path.exists(file_name): |
|
140 |
raise errors.HypervisorError("Failed to stop instance %s: %s" % |
|
141 |
(instance.name, "not running")) |
|
142 |
utils.RemoveFile(file_name) |
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143 |
|
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144 |
def RebootInstance(self, instance): |
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145 |
"""Reboot an instance. |
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146 |
|
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147 |
For the fake hypervisor, this does nothing. |
|
148 |
|
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149 |
""" |
|
150 |
return |
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151 |
|
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152 |
def GetNodeInfo(self): |
|
153 |
"""Return information about the node. |
|
154 |
|
|
155 |
The return value is a dict, which has to have the following items: |
|
156 |
(all values in MiB) |
|
157 |
- memory_total: the total memory size on the node |
|
158 |
- memory_free: the available memory on the node for instances |
|
159 |
- memory_dom0: the memory used by the node itself, if available |
|
160 |
|
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161 |
""" |
|
162 |
# global ram usage from the xm info command |
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163 |
# memory : 3583 |
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164 |
# free_memory : 747 |
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165 |
# note: in xen 3, memory has changed to total_memory |
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166 |
try: |
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167 |
fh = file("/proc/meminfo") |
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168 |
try: |
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169 |
data = fh.readlines() |
|
170 |
finally: |
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171 |
fh.close() |
|
172 |
except IOError, err: |
|
173 |
raise errors.HypervisorError("Failed to list node info: %s" % err) |
|
174 |
|
|
175 |
result = {} |
|
176 |
sum_free = 0 |
|
177 |
for line in data: |
|
178 |
splitfields = line.split(":", 1) |
|
179 |
|
|
180 |
if len(splitfields) > 1: |
|
181 |
key = splitfields[0].strip() |
|
182 |
val = splitfields[1].strip() |
|
183 |
if key == 'MemTotal': |
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184 |
result['memory_total'] = int(val.split()[0])/1024 |
|
185 |
elif key in ('MemFree', 'Buffers', 'Cached'): |
|
186 |
sum_free += int(val.split()[0])/1024 |
|
187 |
elif key == 'Active': |
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188 |
result['memory_dom0'] = int(val.split()[0])/1024 |
|
189 |
|
|
190 |
result['memory_free'] = sum_free |
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191 |
return result |
|
192 |
|
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193 |
@staticmethod |
|
194 |
def GetShellCommandForConsole(instance): |
|
195 |
"""Return a command for connecting to the console of an instance. |
|
196 |
|
|
197 |
""" |
|
198 |
return "echo Console not available for fake hypervisor" |
|
199 |
|
|
200 |
def Verify(self): |
|
201 |
"""Verify the hypervisor. |
|
202 |
|
|
203 |
For the fake hypervisor, it just checks the existence of the base |
|
204 |
dir. |
|
205 |
|
|
206 |
""" |
|
207 |
if not os.path.exists(self._ROOT_DIR): |
|
208 |
return "The required directory '%s' does not exist." % self._ROOT_DIR |
b/lib/hypervisor/Makefile.am | ||
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1 |
CLEANFILES = *.py[oc] |
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2 |
|
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3 |
hypervisordir = $(pkgpythondir)/hypervisor |
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4 |
hypervisor_PYTHON = __init__.py XenHypervisor.py FakeHypervisor.py \ |
|
5 |
BaseHypervisor.py |
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6 |
python_files = $(hypervisor_PYTHON) |
|
7 |
|
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8 |
include $(srcdir)/../Makefile.libcommon |
b/lib/hypervisor/XenHypervisor.py | ||
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1 |
# |
|
2 |
# |
|
3 |
|
|
4 |
# Copyright (C) 2006, 2007, 2008 Google Inc. |
|
5 |
# |
|
6 |
# This program is free software; you can redistribute it and/or modify |
|
7 |
# it under the terms of the GNU General Public License as published by |
|
8 |
# the Free Software Foundation; either version 2 of the License, or |
|
9 |
# (at your option) any later version. |
|
10 |
# |
|
11 |
# This program is distributed in the hope that it will be useful, but |
|
12 |
# WITHOUT ANY WARRANTY; without even the implied warranty of |
|
13 |
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|
14 |
# General Public License for more details. |
|
15 |
# |
|
16 |
# You should have received a copy of the GNU General Public License |
|
17 |
# along with this program; if not, write to the Free Software |
|
18 |
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
|
19 |
# 02110-1301, USA. |
|
20 |
|
|
21 |
|
|
22 |
"""Xen hypervisors |
|
23 |
|
|
24 |
""" |
|
25 |
|
|
26 |
import os |
|
27 |
import os.path |
|
28 |
import time |
|
29 |
from cStringIO import StringIO |
|
30 |
|
|
31 |
from ganeti import constants |
|
32 |
from ganeti import errors |
|
33 |
from ganeti import logger |
|
34 |
from ganeti import utils |
|
35 |
from ganeti.hypervisor import BaseHypervisor |
|
36 |
|
|
37 |
|
|
38 |
class XenHypervisor(BaseHypervisor.BaseHypervisor): |
|
39 |
"""Xen generic hypervisor interface |
|
40 |
|
|
41 |
This is the Xen base class used for both Xen PVM and HVM. It contains |
|
42 |
all the functionality that is identical for both. |
|
43 |
|
|
44 |
""" |
|
45 |
|
|
46 |
@staticmethod |
|
47 |
def _WriteConfigFile(instance, block_devices, extra_args): |
|
48 |
"""Write the Xen config file for the instance. |
|
49 |
|
|
50 |
""" |
|
51 |
raise NotImplementedError |
|
52 |
|
|
53 |
@staticmethod |
|
54 |
def _RemoveConfigFile(instance): |
|
55 |
"""Remove the xen configuration file. |
|
56 |
|
|
57 |
""" |
|
58 |
utils.RemoveFile("/etc/xen/%s" % instance.name) |
|
59 |
|
|
60 |
@staticmethod |
|
61 |
def _GetXMList(include_node): |
|
62 |
"""Return the list of running instances. |
|
63 |
|
|
64 |
If the `include_node` argument is True, then we return information |
|
65 |
for dom0 also, otherwise we filter that from the return value. |
|
66 |
|
|
67 |
The return value is a list of (name, id, memory, vcpus, state, time spent) |
|
68 |
|
|
69 |
""" |
|
70 |
for dummy in range(5): |
|
71 |
result = utils.RunCmd(["xm", "list"]) |
|
72 |
if not result.failed: |
|
73 |
break |
|
74 |
logger.Error("xm list failed (%s): %s" % (result.fail_reason, |
|
75 |
result.output)) |
|
76 |
time.sleep(1) |
|
77 |
|
|
78 |
if result.failed: |
|
79 |
raise errors.HypervisorError("xm list failed, retries" |
|
80 |
" exceeded (%s): %s" % |
|
81 |
(result.fail_reason, result.stderr)) |
|
82 |
|
|
83 |
# skip over the heading |
|
84 |
lines = result.stdout.splitlines()[1:] |
|
85 |
result = [] |
|
86 |
for line in lines: |
|
87 |
# The format of lines is: |
|
88 |
# Name ID Mem(MiB) VCPUs State Time(s) |
|
89 |
# Domain-0 0 3418 4 r----- 266.2 |
|
90 |
data = line.split() |
|
91 |
if len(data) != 6: |
|
92 |
raise errors.HypervisorError("Can't parse output of xm list," |
|
93 |
" line: %s" % line) |
|
94 |
try: |
|
95 |
data[1] = int(data[1]) |
|
96 |
data[2] = int(data[2]) |
|
97 |
data[3] = int(data[3]) |
|
98 |
data[5] = float(data[5]) |
|
99 |
except ValueError, err: |
|
100 |
raise errors.HypervisorError("Can't parse output of xm list," |
|
101 |
" line: %s, error: %s" % (line, err)) |
|
102 |
|
|
103 |
# skip the Domain-0 (optional) |
|
104 |
if include_node or data[0] != 'Domain-0': |
|
105 |
result.append(data) |
|
106 |
|
|
107 |
return result |
|
108 |
|
|
109 |
def ListInstances(self): |
|
110 |
"""Get the list of running instances. |
|
111 |
|
|
112 |
""" |
|
113 |
xm_list = self._GetXMList(False) |
|
114 |
names = [info[0] for info in xm_list] |
|
115 |
return names |
|
116 |
|
|
117 |
def GetInstanceInfo(self, instance_name): |
|
118 |
"""Get instance properties. |
|
119 |
|
|
120 |
Args: |
|
121 |
instance_name: the instance name |
|
122 |
|
|
123 |
Returns: |
|
124 |
(name, id, memory, vcpus, stat, times) |
|
125 |
""" |
|
126 |
xm_list = self._GetXMList(instance_name=="Domain-0") |
|
127 |
result = None |
|
128 |
for data in xm_list: |
|
129 |
if data[0] == instance_name: |
|
130 |
result = data |
|
131 |
break |
|
132 |
return result |
|
133 |
|
|
134 |
def GetAllInstancesInfo(self): |
|
135 |
"""Get properties of all instances. |
|
136 |
|
|
137 |
Returns: |
|
138 |
[(name, id, memory, vcpus, stat, times),...] |
|
139 |
""" |
|
140 |
xm_list = self._GetXMList(False) |
|
141 |
return xm_list |
|
142 |
|
|
143 |
def StartInstance(self, instance, block_devices, extra_args): |
|
144 |
"""Start an instance.""" |
|
145 |
self._WriteConfigFile(instance, block_devices, extra_args) |
|
146 |
result = utils.RunCmd(["xm", "create", instance.name]) |
|
147 |
|
|
148 |
if result.failed: |
|
149 |
raise errors.HypervisorError("Failed to start instance %s: %s (%s)" % |
|
150 |
(instance.name, result.fail_reason, |
|
151 |
result.output)) |
|
152 |
|
|
153 |
def StopInstance(self, instance, force=False): |
|
154 |
"""Stop an instance.""" |
|
155 |
self._RemoveConfigFile(instance) |
|
156 |
if force: |
|
157 |
command = ["xm", "destroy", instance.name] |
|
158 |
else: |
|
159 |
command = ["xm", "shutdown", instance.name] |
|
160 |
result = utils.RunCmd(command) |
|
161 |
|
|
162 |
if result.failed: |
|
163 |
raise errors.HypervisorError("Failed to stop instance %s: %s" % |
|
164 |
(instance.name, result.fail_reason)) |
|
165 |
|
|
166 |
def RebootInstance(self, instance): |
|
167 |
"""Reboot an instance.""" |
|
168 |
result = utils.RunCmd(["xm", "reboot", instance.name]) |
|
169 |
|
|
170 |
if result.failed: |
|
171 |
raise errors.HypervisorError("Failed to reboot instance %s: %s" % |
|
172 |
(instance.name, result.fail_reason)) |
|
173 |
|
|
174 |
def GetNodeInfo(self): |
|
175 |
"""Return information about the node. |
|
176 |
|
|
177 |
The return value is a dict, which has to have the following items: |
|
178 |
(all values in MiB) |
|
179 |
- memory_total: the total memory size on the node |
|
180 |
- memory_free: the available memory on the node for instances |
|
181 |
- memory_dom0: the memory used by the node itself, if available |
|
182 |
|
|
183 |
""" |
|
184 |
# note: in xen 3, memory has changed to total_memory |
|
185 |
result = utils.RunCmd(["xm", "info"]) |
|
186 |
if result.failed: |
|
187 |
logger.Error("Can't run 'xm info': %s" % result.fail_reason) |
|
188 |
return None |
|
189 |
|
|
190 |
xmoutput = result.stdout.splitlines() |
|
191 |
result = {} |
|
192 |
for line in xmoutput: |
|
193 |
splitfields = line.split(":", 1) |
|
194 |
|
|
195 |
if len(splitfields) > 1: |
|
196 |
key = splitfields[0].strip() |
|
197 |
val = splitfields[1].strip() |
|
198 |
if key == 'memory' or key == 'total_memory': |
|
199 |
result['memory_total'] = int(val) |
|
200 |
elif key == 'free_memory': |
|
201 |
result['memory_free'] = int(val) |
|
202 |
dom0_info = self.GetInstanceInfo("Domain-0") |
|
203 |
if dom0_info is not None: |
|
204 |
result['memory_dom0'] = dom0_info[2] |
|
205 |
|
|
206 |
return result |
|
207 |
|
|
208 |
@staticmethod |
|
209 |
def GetShellCommandForConsole(instance): |
|
210 |
"""Return a command for connecting to the console of an instance. |
|
211 |
|
|
212 |
""" |
|
213 |
raise NotImplementedError |
|
214 |
|
|
215 |
|
|
216 |
def Verify(self): |
|
217 |
"""Verify the hypervisor. |
|
218 |
|
|
219 |
For Xen, this verifies that the xend process is running. |
|
220 |
|
|
221 |
""" |
|
222 |
if not utils.CheckDaemonAlive('/var/run/xend.pid', 'xend'): |
|
223 |
return "xend daemon is not running" |
|
224 |
|
|
225 |
@staticmethod |
|
226 |
def _GetConfigFileDiskData(disk_template, block_devices): |
|
227 |
"""Get disk directive for xen config file. |
|
228 |
|
|
229 |
This method builds the xen config disk directive according to the |
|
230 |
given disk_template and block_devices. |
|
231 |
|
|
232 |
Args: |
|
233 |
disk_template: String containing instance disk template |
|
234 |
block_devices: List[tuple1,tuple2,...] |
|
235 |
tuple: (cfdev, rldev) |
|
236 |
cfdev: dict containing ganeti config disk part |
|
237 |
rldev: ganeti.bdev.BlockDev object |
|
238 |
|
|
239 |
Returns: |
|
240 |
String containing disk directive for xen instance config file |
|
241 |
|
|
242 |
""" |
|
243 |
FILE_DRIVER_MAP = { |
|
244 |
constants.FD_LOOP: "file", |
|
245 |
constants.FD_BLKTAP: "tap:aio", |
|
246 |
} |
|
247 |
disk_data = [] |
|
248 |
for cfdev, rldev in block_devices: |
|
249 |
if cfdev.dev_type == constants.LD_FILE: |
|
250 |
line = "'%s:%s,%s,w'" % (FILE_DRIVER_MAP[cfdev.physical_id[0]], |
|
251 |
rldev.dev_path, cfdev.iv_name) |
|
252 |
else: |
|
253 |
line = "'phy:%s,%s,w'" % (rldev.dev_path, cfdev.iv_name) |
|
254 |
disk_data.append(line) |
|
255 |
|
|
256 |
return disk_data |
|
257 |
|
|
258 |
|
|
259 |
class XenPvmHypervisor(XenHypervisor): |
|
260 |
"""Xen PVM hypervisor interface""" |
|
261 |
|
|
262 |
@classmethod |
|
263 |
def _WriteConfigFile(cls, instance, block_devices, extra_args): |
|
264 |
"""Write the Xen config file for the instance. |
|
265 |
|
|
266 |
""" |
|
267 |
config = StringIO() |
|
268 |
config.write("# this is autogenerated by Ganeti, please do not edit\n#\n") |
|
269 |
|
|
270 |
# kernel handling |
|
271 |
if instance.kernel_path in (None, constants.VALUE_DEFAULT): |
|
272 |
kpath = constants.XEN_KERNEL |
|
273 |
else: |
|
274 |
if not os.path.exists(instance.kernel_path): |
|
275 |
raise errors.HypervisorError("The kernel %s for instance %s is" |
|
276 |
" missing" % (instance.kernel_path, |
|
277 |
instance.name)) |
|
278 |
kpath = instance.kernel_path |
|
279 |
config.write("kernel = '%s'\n" % kpath) |
|
280 |
|
|
281 |
# initrd handling |
|
282 |
if instance.initrd_path in (None, constants.VALUE_DEFAULT): |
|
283 |
if os.path.exists(constants.XEN_INITRD): |
|
284 |
initrd_path = constants.XEN_INITRD |
|
285 |
else: |
|
286 |
initrd_path = None |
|
287 |
elif instance.initrd_path == constants.VALUE_NONE: |
|
288 |
initrd_path = None |
|
289 |
else: |
|
290 |
if not os.path.exists(instance.initrd_path): |
|
291 |
raise errors.HypervisorError("The initrd %s for instance %s is" |
|
292 |
" missing" % (instance.initrd_path, |
|
293 |
instance.name)) |
|
294 |
initrd_path = instance.initrd_path |
|
295 |
|
|
296 |
if initrd_path: |
|
297 |
config.write("ramdisk = '%s'\n" % initrd_path) |
|
298 |
|
|
299 |
# rest of the settings |
|
300 |
config.write("memory = %d\n" % instance.memory) |
|
301 |
config.write("vcpus = %d\n" % instance.vcpus) |
|
302 |
config.write("name = '%s'\n" % instance.name) |
|
303 |
|
|
304 |
vif_data = [] |
|
305 |
for nic in instance.nics: |
|
306 |
nic_str = "mac=%s, bridge=%s" % (nic.mac, nic.bridge) |
|
307 |
ip = getattr(nic, "ip", None) |
|
308 |
if ip is not None: |
|
309 |
nic_str += ", ip=%s" % ip |
|
310 |
vif_data.append("'%s'" % nic_str) |
|
311 |
|
|
312 |
config.write("vif = [%s]\n" % ",".join(vif_data)) |
|
313 |
config.write("disk = [%s]\n" % ",".join( |
|
314 |
cls._GetConfigFileDiskData(instance.disk_template, |
|
315 |
block_devices))) |
|
316 |
config.write("root = '/dev/sda ro'\n") |
|
317 |
config.write("on_poweroff = 'destroy'\n") |
|
318 |
config.write("on_reboot = 'restart'\n") |
|
319 |
config.write("on_crash = 'restart'\n") |
|
320 |
if extra_args: |
|
321 |
config.write("extra = '%s'\n" % extra_args) |
|
322 |
# just in case it exists |
|
323 |
utils.RemoveFile("/etc/xen/auto/%s" % instance.name) |
|
324 |
try: |
|
325 |
f = open("/etc/xen/%s" % instance.name, "w") |
|
326 |
try: |
|
327 |
f.write(config.getvalue()) |
|
328 |
finally: |
|
329 |
f.close() |
|
330 |
except IOError, err: |
|
331 |
raise errors.OpExecError("Cannot write Xen instance confile" |
|
332 |
" file /etc/xen/%s: %s" % (instance.name, err)) |
|
333 |
return True |
|
334 |
|
|
335 |
@staticmethod |
|
336 |
def GetShellCommandForConsole(instance): |
|
337 |
"""Return a command for connecting to the console of an instance. |
|
338 |
|
|
339 |
""" |
|
340 |
return "xm console %s" % instance.name |
|
341 |
|
|
342 |
|
|
343 |
class XenHvmHypervisor(XenHypervisor): |
|
344 |
"""Xen HVM hypervisor interface""" |
|
345 |
|
|
346 |
@classmethod |
|
347 |
def _WriteConfigFile(cls, instance, block_devices, extra_args): |
|
348 |
"""Create a Xen 3.1 HVM config file. |
|
349 |
|
|
350 |
""" |
|
351 |
config = StringIO() |
|
352 |
config.write("# this is autogenerated by Ganeti, please do not edit\n#\n") |
|
353 |
config.write("kernel = '/usr/lib/xen/boot/hvmloader'\n") |
|
354 |
config.write("builder = 'hvm'\n") |
|
355 |
config.write("memory = %d\n" % instance.memory) |
|
356 |
config.write("vcpus = %d\n" % instance.vcpus) |
|
357 |
config.write("name = '%s'\n" % instance.name) |
|
358 |
config.write("pae = 1\n") |
|
359 |
config.write("acpi = 1\n") |
|
360 |
config.write("apic = 1\n") |
|
361 |
arch = os.uname()[4] |
|
362 |
if '64' in arch: |
|
363 |
config.write("device_model = '/usr/lib64/xen/bin/qemu-dm'\n") |
|
364 |
else: |
|
365 |
config.write("device_model = '/usr/lib/xen/bin/qemu-dm'\n") |
|
366 |
if instance.hvm_boot_order is None: |
|
367 |
config.write("boot = '%s'\n" % constants.HT_HVM_DEFAULT_BOOT_ORDER) |
|
368 |
else: |
|
369 |
config.write("boot = '%s'\n" % instance.hvm_boot_order) |
|
370 |
config.write("sdl = 0\n") |
|
371 |
config.write("usb = 1\n"); |
|
372 |
config.write("usbdevice = 'tablet'\n"); |
|
373 |
config.write("vnc = 1\n") |
|
374 |
config.write("vnclisten = '0.0.0.0'\n") |
|
375 |
|
|
376 |
if instance.network_port > constants.HT_HVM_VNC_BASE_PORT: |
|
377 |
display = instance.network_port - constants.HT_HVM_VNC_BASE_PORT |
|
378 |
config.write("vncdisplay = %s\n" % display) |
|
379 |
config.write("vncunused = 0\n") |
|
380 |
else: |
|
381 |
config.write("# vncdisplay = 1\n") |
|
382 |
config.write("vncunused = 1\n") |
|
383 |
|
|
384 |
try: |
|
385 |
password_file = open(constants.VNC_PASSWORD_FILE, "r") |
|
386 |
try: |
|
387 |
password = password_file.readline() |
|
388 |
finally: |
|
389 |
password_file.close() |
|
390 |
except IOError: |
|
391 |
raise errors.OpExecError("failed to open VNC password file %s " % |
|
392 |
constants.VNC_PASSWORD_FILE) |
|
393 |
|
|
394 |
config.write("vncpasswd = '%s'\n" % password.rstrip()) |
|
395 |
|
|
396 |
config.write("serial = 'pty'\n") |
|
397 |
config.write("localtime = 1\n") |
|
398 |
|
|
399 |
vif_data = [] |
|
400 |
for nic in instance.nics: |
|
401 |
nic_str = "mac=%s, bridge=%s, type=ioemu" % (nic.mac, nic.bridge) |
|
402 |
ip = getattr(nic, "ip", None) |
|
403 |
if ip is not None: |
|
404 |
nic_str += ", ip=%s" % ip |
|
405 |
vif_data.append("'%s'" % nic_str) |
|
406 |
|
|
407 |
config.write("vif = [%s]\n" % ",".join(vif_data)) |
|
408 |
iso = "'file:/srv/ganeti/iso/hvm-install.iso,hdc:cdrom,r'" |
|
409 |
config.write("disk = [%s, %s]\n" % (",".join( |
|
410 |
cls._GetConfigFileDiskData(instance.disk_template, |
|
411 |
block_devices)), iso)) |
|
412 |
config.write("on_poweroff = 'destroy'\n") |
|
413 |
config.write("on_reboot = 'restart'\n") |
|
414 |
config.write("on_crash = 'restart'\n") |
|
415 |
if extra_args: |
|
416 |
config.write("extra = '%s'\n" % extra_args) |
|
417 |
# just in case it exists |
|
418 |
utils.RemoveFile("/etc/xen/auto/%s" % instance.name) |
|
419 |
try: |
|
420 |
f = open("/etc/xen/%s" % instance.name, "w") |
|
421 |
try: |
|
422 |
f.write(config.getvalue()) |
|
423 |
finally: |
|
424 |
f.close() |
|
425 |
except IOError, err: |
|
426 |
raise errors.OpExecError("Cannot write Xen instance confile" |
|
427 |
" file /etc/xen/%s: %s" % (instance.name, err)) |
|
428 |
return True |
|
429 |
|
|
430 |
@staticmethod |
|
431 |
def GetShellCommandForConsole(instance): |
|
432 |
"""Return a command for connecting to the console of an instance. |
|
433 |
|
|
434 |
""" |
|
435 |
if instance.network_port is None: |
|
436 |
raise errors.OpExecError("no console port defined for %s" |
|
437 |
% instance.name) |
|
438 |
else: |
|
439 |
raise errors.OpExecError("no PTY console, connect to %s:%s via VNC" |
|
440 |
% (instance.primary_node, |
|
441 |
instance.network_port)) |
b/lib/hypervisor/__init__.py | ||
---|---|---|
1 |
# |
|
2 |
# |
|
3 |
|
|
4 |
# Copyright (C) 2006, 2007, 2008 Google Inc. |
|
5 |
# |
|
6 |
# This program is free software; you can redistribute it and/or modify |
|
7 |
# it under the terms of the GNU General Public License as published by |
|
8 |
# the Free Software Foundation; either version 2 of the License, or |
|
9 |
# (at your option) any later version. |
|
10 |
# |
|
11 |
# This program is distributed in the hope that it will be useful, but |
|
12 |
# WITHOUT ANY WARRANTY; without even the implied warranty of |
|
13 |
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|
14 |
# General Public License for more details. |
|
15 |
# |
|
16 |
# You should have received a copy of the GNU General Public License |
|
17 |
# along with this program; if not, write to the Free Software |
|
18 |
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
|
19 |
# 02110-1301, USA. |
|
20 |
|
|
21 |
|
|
22 |
"""Virtualization interface abstraction |
|
23 |
|
|
24 |
""" |
|
25 |
|
|
26 |
from ganeti import ssconf |
|
27 |
from ganeti import constants |
|
28 |
from ganeti import errors |
|
29 |
|
|
30 |
from ganeti.hypervisor import FakeHypervisor |
|
31 |
from ganeti.hypervisor import XenHypervisor |
|
32 |
|
|
33 |
|
|
34 |
def GetHypervisor(): |
|
35 |
"""Return a Hypervisor instance. |
|
36 |
|
|
37 |
This function parses the cluster hypervisor configuration file and |
|
38 |
instantiates a class based on the value of this file. |
|
39 |
|
|
40 |
""" |
|
41 |
ht_kind = ssconf.SimpleStore().GetHypervisorType() |
|
42 |
if ht_kind == constants.HT_XEN_PVM30: |
|
43 |
cls = XenHypervisor.XenPvmHypervisor |
|
44 |
elif ht_kind == constants.HT_XEN_HVM31: |
|
45 |
cls = XenHypervisor.XenHvmHypervisor |
|
46 |
elif ht_kind == constants.HT_FAKE: |
|
47 |
cls = FakeHypervisor.FakeHypervisor |
|
48 |
else: |
|
49 |
raise errors.HypervisorError("Unknown hypervisor type '%s'" % ht_kind) |
|
50 |
return cls() |
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