root / lib / hypervisor / hv_xen.py @ 016d04b3
History | View | Annotate | Download (19.9 kB)
1 | 65a6f9b7 | Michael Hanselmann | #
|
---|---|---|---|
2 | 65a6f9b7 | Michael Hanselmann | #
|
3 | 65a6f9b7 | Michael Hanselmann | |
4 | 65a6f9b7 | Michael Hanselmann | # Copyright (C) 2006, 2007, 2008 Google Inc.
|
5 | 65a6f9b7 | Michael Hanselmann | #
|
6 | 65a6f9b7 | Michael Hanselmann | # This program is free software; you can redistribute it and/or modify
|
7 | 65a6f9b7 | Michael Hanselmann | # it under the terms of the GNU General Public License as published by
|
8 | 65a6f9b7 | Michael Hanselmann | # the Free Software Foundation; either version 2 of the License, or
|
9 | 65a6f9b7 | Michael Hanselmann | # (at your option) any later version.
|
10 | 65a6f9b7 | Michael Hanselmann | #
|
11 | 65a6f9b7 | Michael Hanselmann | # This program is distributed in the hope that it will be useful, but
|
12 | 65a6f9b7 | Michael Hanselmann | # WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 | 65a6f9b7 | Michael Hanselmann | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
14 | 65a6f9b7 | Michael Hanselmann | # General Public License for more details.
|
15 | 65a6f9b7 | Michael Hanselmann | #
|
16 | 65a6f9b7 | Michael Hanselmann | # You should have received a copy of the GNU General Public License
|
17 | 65a6f9b7 | Michael Hanselmann | # along with this program; if not, write to the Free Software
|
18 | 65a6f9b7 | Michael Hanselmann | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
19 | 65a6f9b7 | Michael Hanselmann | # 02110-1301, USA.
|
20 | 65a6f9b7 | Michael Hanselmann | |
21 | 65a6f9b7 | Michael Hanselmann | |
22 | 65a6f9b7 | Michael Hanselmann | """Xen hypervisors
|
23 | 65a6f9b7 | Michael Hanselmann |
|
24 | 65a6f9b7 | Michael Hanselmann | """
|
25 | 65a6f9b7 | Michael Hanselmann | |
26 | 65a6f9b7 | Michael Hanselmann | import os |
27 | 65a6f9b7 | Michael Hanselmann | import os.path |
28 | 65a6f9b7 | Michael Hanselmann | import time |
29 | b48909c8 | Iustin Pop | import logging |
30 | 65a6f9b7 | Michael Hanselmann | from cStringIO import StringIO |
31 | 65a6f9b7 | Michael Hanselmann | |
32 | 65a6f9b7 | Michael Hanselmann | from ganeti import constants |
33 | 65a6f9b7 | Michael Hanselmann | from ganeti import errors |
34 | 65a6f9b7 | Michael Hanselmann | from ganeti import utils |
35 | a2d32034 | Michael Hanselmann | from ganeti.hypervisor import hv_base |
36 | 65a6f9b7 | Michael Hanselmann | |
37 | 65a6f9b7 | Michael Hanselmann | |
38 | a2d32034 | Michael Hanselmann | class XenHypervisor(hv_base.BaseHypervisor): |
39 | 65a6f9b7 | Michael Hanselmann | """Xen generic hypervisor interface
|
40 | 65a6f9b7 | Michael Hanselmann |
|
41 | 65a6f9b7 | Michael Hanselmann | This is the Xen base class used for both Xen PVM and HVM. It contains
|
42 | 65a6f9b7 | Michael Hanselmann | all the functionality that is identical for both.
|
43 | 65a6f9b7 | Michael Hanselmann |
|
44 | 65a6f9b7 | Michael Hanselmann | """
|
45 | 7dd106d3 | Iustin Pop | REBOOT_RETRY_COUNT = 60
|
46 | 7dd106d3 | Iustin Pop | REBOOT_RETRY_INTERVAL = 10
|
47 | 65a6f9b7 | Michael Hanselmann | |
48 | 3680f662 | Guido Trotter | ANCILLARY_FILES = [ |
49 | 3680f662 | Guido Trotter | '/etc/xen/xend-config.sxp',
|
50 | 3680f662 | Guido Trotter | '/etc/xen/scripts/vif-bridge',
|
51 | 3680f662 | Guido Trotter | ] |
52 | 3680f662 | Guido Trotter | |
53 | 5661b908 | Iustin Pop | @classmethod
|
54 | 07813a9e | Iustin Pop | def _WriteConfigFile(cls, instance, block_devices): |
55 | 65a6f9b7 | Michael Hanselmann | """Write the Xen config file for the instance.
|
56 | 65a6f9b7 | Michael Hanselmann |
|
57 | 65a6f9b7 | Michael Hanselmann | """
|
58 | 65a6f9b7 | Michael Hanselmann | raise NotImplementedError |
59 | 65a6f9b7 | Michael Hanselmann | |
60 | 65a6f9b7 | Michael Hanselmann | @staticmethod
|
61 | 4390ccff | Guido Trotter | def _WriteConfigFileStatic(instance_name, data): |
62 | 4390ccff | Guido Trotter | """Write the Xen config file for the instance.
|
63 | 4390ccff | Guido Trotter |
|
64 | 4390ccff | Guido Trotter | This version of the function just writes the config file from static data.
|
65 | 4390ccff | Guido Trotter |
|
66 | 4390ccff | Guido Trotter | """
|
67 | 4390ccff | Guido Trotter | utils.WriteFile("/etc/xen/%s" % instance_name, data=data)
|
68 | 4390ccff | Guido Trotter | |
69 | 4390ccff | Guido Trotter | @staticmethod
|
70 | 4390ccff | Guido Trotter | def _ReadConfigFile(instance_name): |
71 | 4390ccff | Guido Trotter | """Returns the contents of the instance config file.
|
72 | 4390ccff | Guido Trotter |
|
73 | 4390ccff | Guido Trotter | """
|
74 | 4390ccff | Guido Trotter | try:
|
75 | 4390ccff | Guido Trotter | file_content = utils.ReadFile("/etc/xen/%s" % instance_name)
|
76 | 4390ccff | Guido Trotter | except EnvironmentError, err: |
77 | 4390ccff | Guido Trotter | raise errors.HypervisorError("Failed to load Xen config file: %s" % err) |
78 | 4390ccff | Guido Trotter | return file_content
|
79 | 4390ccff | Guido Trotter | |
80 | 4390ccff | Guido Trotter | @staticmethod
|
81 | 53c776b5 | Iustin Pop | def _RemoveConfigFile(instance_name): |
82 | 65a6f9b7 | Michael Hanselmann | """Remove the xen configuration file.
|
83 | 65a6f9b7 | Michael Hanselmann |
|
84 | 65a6f9b7 | Michael Hanselmann | """
|
85 | 53c776b5 | Iustin Pop | utils.RemoveFile("/etc/xen/%s" % instance_name)
|
86 | 65a6f9b7 | Michael Hanselmann | |
87 | 65a6f9b7 | Michael Hanselmann | @staticmethod
|
88 | 65a6f9b7 | Michael Hanselmann | def _GetXMList(include_node): |
89 | 65a6f9b7 | Michael Hanselmann | """Return the list of running instances.
|
90 | 65a6f9b7 | Michael Hanselmann |
|
91 | c41eea6e | Iustin Pop | If the include_node argument is True, then we return information
|
92 | 65a6f9b7 | Michael Hanselmann | for dom0 also, otherwise we filter that from the return value.
|
93 | 65a6f9b7 | Michael Hanselmann |
|
94 | c41eea6e | Iustin Pop | @return: list of (name, id, memory, vcpus, state, time spent)
|
95 | 65a6f9b7 | Michael Hanselmann |
|
96 | 65a6f9b7 | Michael Hanselmann | """
|
97 | 7c4d6c7b | Michael Hanselmann | for _ in range(5): |
98 | 65a6f9b7 | Michael Hanselmann | result = utils.RunCmd(["xm", "list"]) |
99 | 65a6f9b7 | Michael Hanselmann | if not result.failed: |
100 | 65a6f9b7 | Michael Hanselmann | break
|
101 | b48909c8 | Iustin Pop | logging.error("xm list failed (%s): %s", result.fail_reason,
|
102 | b48909c8 | Iustin Pop | result.output) |
103 | 65a6f9b7 | Michael Hanselmann | time.sleep(1)
|
104 | 65a6f9b7 | Michael Hanselmann | |
105 | 65a6f9b7 | Michael Hanselmann | if result.failed:
|
106 | 65a6f9b7 | Michael Hanselmann | raise errors.HypervisorError("xm list failed, retries" |
107 | 65a6f9b7 | Michael Hanselmann | " exceeded (%s): %s" %
|
108 | 3213d3c8 | Iustin Pop | (result.fail_reason, result.output)) |
109 | 65a6f9b7 | Michael Hanselmann | |
110 | 65a6f9b7 | Michael Hanselmann | # skip over the heading
|
111 | 65a6f9b7 | Michael Hanselmann | lines = result.stdout.splitlines()[1:]
|
112 | 65a6f9b7 | Michael Hanselmann | result = [] |
113 | 65a6f9b7 | Michael Hanselmann | for line in lines: |
114 | 65a6f9b7 | Michael Hanselmann | # The format of lines is:
|
115 | 65a6f9b7 | Michael Hanselmann | # Name ID Mem(MiB) VCPUs State Time(s)
|
116 | 65a6f9b7 | Michael Hanselmann | # Domain-0 0 3418 4 r----- 266.2
|
117 | 65a6f9b7 | Michael Hanselmann | data = line.split() |
118 | 65a6f9b7 | Michael Hanselmann | if len(data) != 6: |
119 | 65a6f9b7 | Michael Hanselmann | raise errors.HypervisorError("Can't parse output of xm list," |
120 | 65a6f9b7 | Michael Hanselmann | " line: %s" % line)
|
121 | 65a6f9b7 | Michael Hanselmann | try:
|
122 | 65a6f9b7 | Michael Hanselmann | data[1] = int(data[1]) |
123 | 65a6f9b7 | Michael Hanselmann | data[2] = int(data[2]) |
124 | 65a6f9b7 | Michael Hanselmann | data[3] = int(data[3]) |
125 | 65a6f9b7 | Michael Hanselmann | data[5] = float(data[5]) |
126 | 65a6f9b7 | Michael Hanselmann | except ValueError, err: |
127 | 65a6f9b7 | Michael Hanselmann | raise errors.HypervisorError("Can't parse output of xm list," |
128 | 65a6f9b7 | Michael Hanselmann | " line: %s, error: %s" % (line, err))
|
129 | 65a6f9b7 | Michael Hanselmann | |
130 | 65a6f9b7 | Michael Hanselmann | # skip the Domain-0 (optional)
|
131 | 65a6f9b7 | Michael Hanselmann | if include_node or data[0] != 'Domain-0': |
132 | 65a6f9b7 | Michael Hanselmann | result.append(data) |
133 | 65a6f9b7 | Michael Hanselmann | |
134 | 65a6f9b7 | Michael Hanselmann | return result
|
135 | 65a6f9b7 | Michael Hanselmann | |
136 | 65a6f9b7 | Michael Hanselmann | def ListInstances(self): |
137 | 65a6f9b7 | Michael Hanselmann | """Get the list of running instances.
|
138 | 65a6f9b7 | Michael Hanselmann |
|
139 | 65a6f9b7 | Michael Hanselmann | """
|
140 | 65a6f9b7 | Michael Hanselmann | xm_list = self._GetXMList(False) |
141 | 65a6f9b7 | Michael Hanselmann | names = [info[0] for info in xm_list] |
142 | 65a6f9b7 | Michael Hanselmann | return names
|
143 | 65a6f9b7 | Michael Hanselmann | |
144 | 65a6f9b7 | Michael Hanselmann | def GetInstanceInfo(self, instance_name): |
145 | 65a6f9b7 | Michael Hanselmann | """Get instance properties.
|
146 | 65a6f9b7 | Michael Hanselmann |
|
147 | c41eea6e | Iustin Pop | @param instance_name: the instance name
|
148 | c41eea6e | Iustin Pop |
|
149 | c41eea6e | Iustin Pop | @return: tuple (name, id, memory, vcpus, stat, times)
|
150 | 65a6f9b7 | Michael Hanselmann |
|
151 | 65a6f9b7 | Michael Hanselmann | """
|
152 | 65a6f9b7 | Michael Hanselmann | xm_list = self._GetXMList(instance_name=="Domain-0") |
153 | 65a6f9b7 | Michael Hanselmann | result = None
|
154 | 65a6f9b7 | Michael Hanselmann | for data in xm_list: |
155 | 65a6f9b7 | Michael Hanselmann | if data[0] == instance_name: |
156 | 65a6f9b7 | Michael Hanselmann | result = data |
157 | 65a6f9b7 | Michael Hanselmann | break
|
158 | 65a6f9b7 | Michael Hanselmann | return result
|
159 | 65a6f9b7 | Michael Hanselmann | |
160 | 65a6f9b7 | Michael Hanselmann | def GetAllInstancesInfo(self): |
161 | 65a6f9b7 | Michael Hanselmann | """Get properties of all instances.
|
162 | 65a6f9b7 | Michael Hanselmann |
|
163 | c41eea6e | Iustin Pop | @return: list of tuples (name, id, memory, vcpus, stat, times)
|
164 | c41eea6e | Iustin Pop |
|
165 | 65a6f9b7 | Michael Hanselmann | """
|
166 | 65a6f9b7 | Michael Hanselmann | xm_list = self._GetXMList(False) |
167 | 65a6f9b7 | Michael Hanselmann | return xm_list
|
168 | 65a6f9b7 | Michael Hanselmann | |
169 | 07813a9e | Iustin Pop | def StartInstance(self, instance, block_devices): |
170 | c41eea6e | Iustin Pop | """Start an instance.
|
171 | c41eea6e | Iustin Pop |
|
172 | c41eea6e | Iustin Pop | """
|
173 | 07813a9e | Iustin Pop | self._WriteConfigFile(instance, block_devices)
|
174 | 65a6f9b7 | Michael Hanselmann | result = utils.RunCmd(["xm", "create", instance.name]) |
175 | 65a6f9b7 | Michael Hanselmann | |
176 | 65a6f9b7 | Michael Hanselmann | if result.failed:
|
177 | 65a6f9b7 | Michael Hanselmann | raise errors.HypervisorError("Failed to start instance %s: %s (%s)" % |
178 | 65a6f9b7 | Michael Hanselmann | (instance.name, result.fail_reason, |
179 | 65a6f9b7 | Michael Hanselmann | result.output)) |
180 | 65a6f9b7 | Michael Hanselmann | |
181 | 65a6f9b7 | Michael Hanselmann | def StopInstance(self, instance, force=False): |
182 | c41eea6e | Iustin Pop | """Stop an instance.
|
183 | c41eea6e | Iustin Pop |
|
184 | c41eea6e | Iustin Pop | """
|
185 | 53c776b5 | Iustin Pop | self._RemoveConfigFile(instance.name)
|
186 | 65a6f9b7 | Michael Hanselmann | if force:
|
187 | 65a6f9b7 | Michael Hanselmann | command = ["xm", "destroy", instance.name] |
188 | 65a6f9b7 | Michael Hanselmann | else:
|
189 | 65a6f9b7 | Michael Hanselmann | command = ["xm", "shutdown", instance.name] |
190 | 65a6f9b7 | Michael Hanselmann | result = utils.RunCmd(command) |
191 | 65a6f9b7 | Michael Hanselmann | |
192 | 65a6f9b7 | Michael Hanselmann | if result.failed:
|
193 | 3213d3c8 | Iustin Pop | raise errors.HypervisorError("Failed to stop instance %s: %s, %s" % |
194 | 3213d3c8 | Iustin Pop | (instance.name, result.fail_reason, |
195 | 3213d3c8 | Iustin Pop | result.output)) |
196 | 65a6f9b7 | Michael Hanselmann | |
197 | 65a6f9b7 | Michael Hanselmann | def RebootInstance(self, instance): |
198 | c41eea6e | Iustin Pop | """Reboot an instance.
|
199 | c41eea6e | Iustin Pop |
|
200 | c41eea6e | Iustin Pop | """
|
201 | 7dd106d3 | Iustin Pop | ini_info = self.GetInstanceInfo(instance.name)
|
202 | 65a6f9b7 | Michael Hanselmann | result = utils.RunCmd(["xm", "reboot", instance.name]) |
203 | 65a6f9b7 | Michael Hanselmann | |
204 | 65a6f9b7 | Michael Hanselmann | if result.failed:
|
205 | 3213d3c8 | Iustin Pop | raise errors.HypervisorError("Failed to reboot instance %s: %s, %s" % |
206 | 3213d3c8 | Iustin Pop | (instance.name, result.fail_reason, |
207 | 3213d3c8 | Iustin Pop | result.output)) |
208 | 7dd106d3 | Iustin Pop | done = False
|
209 | 7dd106d3 | Iustin Pop | retries = self.REBOOT_RETRY_COUNT
|
210 | 7dd106d3 | Iustin Pop | while retries > 0: |
211 | 7dd106d3 | Iustin Pop | new_info = self.GetInstanceInfo(instance.name)
|
212 | 7dd106d3 | Iustin Pop | # check if the domain ID has changed or the run time has
|
213 | 7dd106d3 | Iustin Pop | # decreased
|
214 | 7dd106d3 | Iustin Pop | if new_info[1] != ini_info[1] or new_info[5] < ini_info[5]: |
215 | 7dd106d3 | Iustin Pop | done = True
|
216 | 7dd106d3 | Iustin Pop | break
|
217 | 7dd106d3 | Iustin Pop | time.sleep(self.REBOOT_RETRY_INTERVAL)
|
218 | 7dd106d3 | Iustin Pop | retries -= 1
|
219 | 7dd106d3 | Iustin Pop | |
220 | 7dd106d3 | Iustin Pop | if not done: |
221 | 7dd106d3 | Iustin Pop | raise errors.HypervisorError("Failed to reboot instance %s: instance" |
222 | 7dd106d3 | Iustin Pop | " did not reboot in the expected interval" %
|
223 | 7dd106d3 | Iustin Pop | (instance.name, )) |
224 | 65a6f9b7 | Michael Hanselmann | |
225 | 65a6f9b7 | Michael Hanselmann | def GetNodeInfo(self): |
226 | 65a6f9b7 | Michael Hanselmann | """Return information about the node.
|
227 | 65a6f9b7 | Michael Hanselmann |
|
228 | 0105bad3 | Iustin Pop | @return: a dict with the following keys (memory values in MiB):
|
229 | c41eea6e | Iustin Pop | - memory_total: the total memory size on the node
|
230 | c41eea6e | Iustin Pop | - memory_free: the available memory on the node for instances
|
231 | c41eea6e | Iustin Pop | - memory_dom0: the memory used by the node itself, if available
|
232 | 0105bad3 | Iustin Pop | - nr_cpus: total number of CPUs
|
233 | 0105bad3 | Iustin Pop | - nr_nodes: in a NUMA system, the number of domains
|
234 | 0105bad3 | Iustin Pop | - nr_sockets: the number of physical CPU sockets in the node
|
235 | 65a6f9b7 | Michael Hanselmann |
|
236 | 65a6f9b7 | Michael Hanselmann | """
|
237 | 65a6f9b7 | Michael Hanselmann | # note: in xen 3, memory has changed to total_memory
|
238 | 65a6f9b7 | Michael Hanselmann | result = utils.RunCmd(["xm", "info"]) |
239 | 65a6f9b7 | Michael Hanselmann | if result.failed:
|
240 | b48909c8 | Iustin Pop | logging.error("Can't run 'xm info' (%s): %s", result.fail_reason,
|
241 | b48909c8 | Iustin Pop | result.output) |
242 | 65a6f9b7 | Michael Hanselmann | return None |
243 | 65a6f9b7 | Michael Hanselmann | |
244 | 65a6f9b7 | Michael Hanselmann | xmoutput = result.stdout.splitlines() |
245 | 65a6f9b7 | Michael Hanselmann | result = {} |
246 | 0105bad3 | Iustin Pop | cores_per_socket = threads_per_core = nr_cpus = None
|
247 | 65a6f9b7 | Michael Hanselmann | for line in xmoutput: |
248 | 65a6f9b7 | Michael Hanselmann | splitfields = line.split(":", 1) |
249 | 65a6f9b7 | Michael Hanselmann | |
250 | 65a6f9b7 | Michael Hanselmann | if len(splitfields) > 1: |
251 | 65a6f9b7 | Michael Hanselmann | key = splitfields[0].strip()
|
252 | 65a6f9b7 | Michael Hanselmann | val = splitfields[1].strip()
|
253 | 65a6f9b7 | Michael Hanselmann | if key == 'memory' or key == 'total_memory': |
254 | 65a6f9b7 | Michael Hanselmann | result['memory_total'] = int(val) |
255 | 65a6f9b7 | Michael Hanselmann | elif key == 'free_memory': |
256 | 65a6f9b7 | Michael Hanselmann | result['memory_free'] = int(val) |
257 | e8a4c138 | Iustin Pop | elif key == 'nr_cpus': |
258 | 0105bad3 | Iustin Pop | nr_cpus = result['cpu_total'] = int(val) |
259 | 0105bad3 | Iustin Pop | elif key == 'nr_nodes': |
260 | 0105bad3 | Iustin Pop | result['cpu_nodes'] = int(val) |
261 | 0105bad3 | Iustin Pop | elif key == 'cores_per_socket': |
262 | 0105bad3 | Iustin Pop | cores_per_socket = int(val)
|
263 | 0105bad3 | Iustin Pop | elif key == 'threads_per_core': |
264 | 0105bad3 | Iustin Pop | threads_per_core = int(val)
|
265 | 0105bad3 | Iustin Pop | |
266 | 0105bad3 | Iustin Pop | if (cores_per_socket is not None and |
267 | 0105bad3 | Iustin Pop | threads_per_core is not None and nr_cpus is not None): |
268 | 0105bad3 | Iustin Pop | result['cpu_sockets'] = nr_cpus / (cores_per_socket * threads_per_core)
|
269 | 0105bad3 | Iustin Pop | |
270 | 65a6f9b7 | Michael Hanselmann | dom0_info = self.GetInstanceInfo("Domain-0") |
271 | 65a6f9b7 | Michael Hanselmann | if dom0_info is not None: |
272 | 65a6f9b7 | Michael Hanselmann | result['memory_dom0'] = dom0_info[2] |
273 | 65a6f9b7 | Michael Hanselmann | |
274 | 65a6f9b7 | Michael Hanselmann | return result
|
275 | 65a6f9b7 | Michael Hanselmann | |
276 | 637ce7f9 | Guido Trotter | @classmethod
|
277 | 5431b2e4 | Guido Trotter | def GetShellCommandForConsole(cls, instance, hvparams, beparams): |
278 | 65a6f9b7 | Michael Hanselmann | """Return a command for connecting to the console of an instance.
|
279 | 65a6f9b7 | Michael Hanselmann |
|
280 | 65a6f9b7 | Michael Hanselmann | """
|
281 | 04c4330c | Alexander Schreiber | return "xm console %s" % instance.name |
282 | 04c4330c | Alexander Schreiber | |
283 | 65a6f9b7 | Michael Hanselmann | |
284 | 65a6f9b7 | Michael Hanselmann | def Verify(self): |
285 | 65a6f9b7 | Michael Hanselmann | """Verify the hypervisor.
|
286 | 65a6f9b7 | Michael Hanselmann |
|
287 | 65a6f9b7 | Michael Hanselmann | For Xen, this verifies that the xend process is running.
|
288 | 65a6f9b7 | Michael Hanselmann |
|
289 | 65a6f9b7 | Michael Hanselmann | """
|
290 | e3e66f02 | Michael Hanselmann | result = utils.RunCmd(["xm", "info"]) |
291 | e3e66f02 | Michael Hanselmann | if result.failed:
|
292 | 3213d3c8 | Iustin Pop | return "'xm info' failed: %s, %s" % (result.fail_reason, result.output) |
293 | 65a6f9b7 | Michael Hanselmann | |
294 | 65a6f9b7 | Michael Hanselmann | @staticmethod
|
295 | 65a6f9b7 | Michael Hanselmann | def _GetConfigFileDiskData(disk_template, block_devices): |
296 | 65a6f9b7 | Michael Hanselmann | """Get disk directive for xen config file.
|
297 | 65a6f9b7 | Michael Hanselmann |
|
298 | 65a6f9b7 | Michael Hanselmann | This method builds the xen config disk directive according to the
|
299 | 65a6f9b7 | Michael Hanselmann | given disk_template and block_devices.
|
300 | 65a6f9b7 | Michael Hanselmann |
|
301 | c41eea6e | Iustin Pop | @param disk_template: string containing instance disk template
|
302 | c41eea6e | Iustin Pop | @param block_devices: list of tuples (cfdev, rldev):
|
303 | c41eea6e | Iustin Pop | - cfdev: dict containing ganeti config disk part
|
304 | c41eea6e | Iustin Pop | - rldev: ganeti.bdev.BlockDev object
|
305 | 65a6f9b7 | Michael Hanselmann |
|
306 | c41eea6e | Iustin Pop | @return: string containing disk directive for xen instance config file
|
307 | 65a6f9b7 | Michael Hanselmann |
|
308 | 65a6f9b7 | Michael Hanselmann | """
|
309 | 65a6f9b7 | Michael Hanselmann | FILE_DRIVER_MAP = { |
310 | 65a6f9b7 | Michael Hanselmann | constants.FD_LOOP: "file",
|
311 | 65a6f9b7 | Michael Hanselmann | constants.FD_BLKTAP: "tap:aio",
|
312 | 65a6f9b7 | Michael Hanselmann | } |
313 | 65a6f9b7 | Michael Hanselmann | disk_data = [] |
314 | 2864f2d9 | Iustin Pop | if len(block_devices) > 24: |
315 | 2864f2d9 | Iustin Pop | # 'z' - 'a' = 24
|
316 | 2864f2d9 | Iustin Pop | raise errors.HypervisorError("Too many disks") |
317 | 2864f2d9 | Iustin Pop | # FIXME: instead of this hardcoding here, each of PVM/HVM should
|
318 | 2864f2d9 | Iustin Pop | # directly export their info (currently HVM will just sed this info)
|
319 | 2864f2d9 | Iustin Pop | namespace = ["sd" + chr(i + ord('a')) for i in range(24)] |
320 | 069cfbf1 | Iustin Pop | for sd_name, (cfdev, dev_path) in zip(namespace, block_devices): |
321 | d34b16d7 | Iustin Pop | if cfdev.mode == constants.DISK_RDWR:
|
322 | d34b16d7 | Iustin Pop | mode = "w"
|
323 | d34b16d7 | Iustin Pop | else:
|
324 | d34b16d7 | Iustin Pop | mode = "r"
|
325 | 65a6f9b7 | Michael Hanselmann | if cfdev.dev_type == constants.LD_FILE:
|
326 | d34b16d7 | Iustin Pop | line = "'%s:%s,%s,%s'" % (FILE_DRIVER_MAP[cfdev.physical_id[0]], |
327 | d34b16d7 | Iustin Pop | dev_path, sd_name, mode) |
328 | 65a6f9b7 | Michael Hanselmann | else:
|
329 | d34b16d7 | Iustin Pop | line = "'phy:%s,%s,%s'" % (dev_path, sd_name, mode)
|
330 | 65a6f9b7 | Michael Hanselmann | disk_data.append(line) |
331 | 65a6f9b7 | Michael Hanselmann | |
332 | 65a6f9b7 | Michael Hanselmann | return disk_data
|
333 | 65a6f9b7 | Michael Hanselmann | |
334 | 4390ccff | Guido Trotter | def MigrationInfo(self, instance): |
335 | 4390ccff | Guido Trotter | """Get instance information to perform a migration.
|
336 | 4390ccff | Guido Trotter |
|
337 | 4390ccff | Guido Trotter | @type instance: L{objects.Instance}
|
338 | 4390ccff | Guido Trotter | @param instance: instance to be migrated
|
339 | 4390ccff | Guido Trotter | @rtype: string
|
340 | 4390ccff | Guido Trotter | @return: content of the xen config file
|
341 | 4390ccff | Guido Trotter |
|
342 | 4390ccff | Guido Trotter | """
|
343 | 4390ccff | Guido Trotter | return self._ReadConfigFile(instance.name) |
344 | 4390ccff | Guido Trotter | |
345 | 4390ccff | Guido Trotter | def AcceptInstance(self, instance, info, target): |
346 | 4390ccff | Guido Trotter | """Prepare to accept an instance.
|
347 | 4390ccff | Guido Trotter |
|
348 | 4390ccff | Guido Trotter | @type instance: L{objects.Instance}
|
349 | 4390ccff | Guido Trotter | @param instance: instance to be accepted
|
350 | 4390ccff | Guido Trotter | @type info: string
|
351 | 4390ccff | Guido Trotter | @param info: content of the xen config file on the source node
|
352 | 4390ccff | Guido Trotter | @type target: string
|
353 | 4390ccff | Guido Trotter | @param target: target host (usually ip), on this node
|
354 | 4390ccff | Guido Trotter |
|
355 | 4390ccff | Guido Trotter | """
|
356 | 4390ccff | Guido Trotter | pass
|
357 | 4390ccff | Guido Trotter | |
358 | 4390ccff | Guido Trotter | def FinalizeMigration(self, instance, info, success): |
359 | 4390ccff | Guido Trotter | """Finalize an instance migration.
|
360 | 4390ccff | Guido Trotter |
|
361 | 4390ccff | Guido Trotter | After a successful migration we write the xen config file.
|
362 | 4390ccff | Guido Trotter | We do nothing on a failure, as we did not change anything at accept time.
|
363 | 4390ccff | Guido Trotter |
|
364 | 4390ccff | Guido Trotter | @type instance: L{objects.Instance}
|
365 | 4390ccff | Guido Trotter | @param instance: instance whose migration is being aborted
|
366 | 4390ccff | Guido Trotter | @type info: string
|
367 | 4390ccff | Guido Trotter | @param info: content of the xen config file on the source node
|
368 | 4390ccff | Guido Trotter | @type success: boolean
|
369 | 4390ccff | Guido Trotter | @param success: whether the migration was a success or a failure
|
370 | 4390ccff | Guido Trotter |
|
371 | 4390ccff | Guido Trotter | """
|
372 | 4390ccff | Guido Trotter | if success:
|
373 | 4390ccff | Guido Trotter | self._WriteConfigFileStatic(instance.name, info)
|
374 | 4390ccff | Guido Trotter | |
375 | 6e7275c0 | Iustin Pop | def MigrateInstance(self, instance, target, live): |
376 | 6e7275c0 | Iustin Pop | """Migrate an instance to a target node.
|
377 | 6e7275c0 | Iustin Pop |
|
378 | 6e7275c0 | Iustin Pop | The migration will not be attempted if the instance is not
|
379 | 6e7275c0 | Iustin Pop | currently running.
|
380 | 6e7275c0 | Iustin Pop |
|
381 | fdf7f055 | Guido Trotter | @type instance: string
|
382 | fdf7f055 | Guido Trotter | @param instance: instance name
|
383 | fdf7f055 | Guido Trotter | @type target: string
|
384 | fdf7f055 | Guido Trotter | @param target: ip address of the target node
|
385 | fdf7f055 | Guido Trotter | @type live: boolean
|
386 | fdf7f055 | Guido Trotter | @param live: perform a live migration
|
387 | fdf7f055 | Guido Trotter |
|
388 | 6e7275c0 | Iustin Pop | """
|
389 | 6e7275c0 | Iustin Pop | if self.GetInstanceInfo(instance) is None: |
390 | 6e7275c0 | Iustin Pop | raise errors.HypervisorError("Instance not running, cannot migrate") |
391 | 6e7275c0 | Iustin Pop | args = ["xm", "migrate"] |
392 | 6e7275c0 | Iustin Pop | if live:
|
393 | 6e7275c0 | Iustin Pop | args.append("-l")
|
394 | 6e7275c0 | Iustin Pop | args.extend([instance, target]) |
395 | 6e7275c0 | Iustin Pop | result = utils.RunCmd(args) |
396 | 6e7275c0 | Iustin Pop | if result.failed:
|
397 | 6e7275c0 | Iustin Pop | raise errors.HypervisorError("Failed to migrate instance %s: %s" % |
398 | 6e7275c0 | Iustin Pop | (instance, result.output)) |
399 | 53c776b5 | Iustin Pop | # remove old xen file after migration succeeded
|
400 | 53c776b5 | Iustin Pop | try:
|
401 | 53c776b5 | Iustin Pop | self._RemoveConfigFile(instance)
|
402 | c979d253 | Iustin Pop | except EnvironmentError: |
403 | c979d253 | Iustin Pop | logging.exception("Failure while removing instance config file")
|
404 | 6e7275c0 | Iustin Pop | |
405 | f5118ade | Iustin Pop | @classmethod
|
406 | f5118ade | Iustin Pop | def PowercycleNode(cls): |
407 | f5118ade | Iustin Pop | """Xen-specific powercycle.
|
408 | f5118ade | Iustin Pop |
|
409 | f5118ade | Iustin Pop | This first does a Linux reboot (which triggers automatically a Xen
|
410 | f5118ade | Iustin Pop | reboot), and if that fails it tries to do a Xen reboot. The reason
|
411 | f5118ade | Iustin Pop | we don't try a Xen reboot first is that the xen reboot launches an
|
412 | f5118ade | Iustin Pop | external command which connects to the Xen hypervisor, and that
|
413 | f5118ade | Iustin Pop | won't work in case the root filesystem is broken and/or the xend
|
414 | f5118ade | Iustin Pop | daemon is not working.
|
415 | f5118ade | Iustin Pop |
|
416 | f5118ade | Iustin Pop | """
|
417 | f5118ade | Iustin Pop | try:
|
418 | f5118ade | Iustin Pop | cls.LinuxPowercycle() |
419 | f5118ade | Iustin Pop | finally:
|
420 | f5118ade | Iustin Pop | utils.RunCmd(["xm", "debug", "R"]) |
421 | f5118ade | Iustin Pop | |
422 | 65a6f9b7 | Michael Hanselmann | |
423 | 65a6f9b7 | Michael Hanselmann | class XenPvmHypervisor(XenHypervisor): |
424 | 65a6f9b7 | Michael Hanselmann | """Xen PVM hypervisor interface"""
|
425 | 65a6f9b7 | Michael Hanselmann | |
426 | 205ab586 | Iustin Pop | PARAMETERS = { |
427 | 205ab586 | Iustin Pop | constants.HV_KERNEL_PATH: hv_base.REQ_FILE_CHECK, |
428 | 205ab586 | Iustin Pop | constants.HV_INITRD_PATH: hv_base.OPT_FILE_CHECK, |
429 | 205ab586 | Iustin Pop | constants.HV_ROOT_PATH: hv_base.REQUIRED_CHECK, |
430 | 205ab586 | Iustin Pop | constants.HV_KERNEL_ARGS: hv_base.NO_CHECK, |
431 | 205ab586 | Iustin Pop | } |
432 | f48148c3 | Iustin Pop | |
433 | 65a6f9b7 | Michael Hanselmann | @classmethod
|
434 | 07813a9e | Iustin Pop | def _WriteConfigFile(cls, instance, block_devices): |
435 | 65a6f9b7 | Michael Hanselmann | """Write the Xen config file for the instance.
|
436 | 65a6f9b7 | Michael Hanselmann |
|
437 | 65a6f9b7 | Michael Hanselmann | """
|
438 | a985b417 | Iustin Pop | hvp = instance.hvparams |
439 | 65a6f9b7 | Michael Hanselmann | config = StringIO() |
440 | 65a6f9b7 | Michael Hanselmann | config.write("# this is autogenerated by Ganeti, please do not edit\n#\n")
|
441 | 65a6f9b7 | Michael Hanselmann | |
442 | 65a6f9b7 | Michael Hanselmann | # kernel handling
|
443 | a985b417 | Iustin Pop | kpath = hvp[constants.HV_KERNEL_PATH] |
444 | 65a6f9b7 | Michael Hanselmann | config.write("kernel = '%s'\n" % kpath)
|
445 | 65a6f9b7 | Michael Hanselmann | |
446 | 65a6f9b7 | Michael Hanselmann | # initrd handling
|
447 | a985b417 | Iustin Pop | initrd_path = hvp[constants.HV_INITRD_PATH] |
448 | 65a6f9b7 | Michael Hanselmann | if initrd_path:
|
449 | 65a6f9b7 | Michael Hanselmann | config.write("ramdisk = '%s'\n" % initrd_path)
|
450 | 65a6f9b7 | Michael Hanselmann | |
451 | 65a6f9b7 | Michael Hanselmann | # rest of the settings
|
452 | 8b3fd458 | Iustin Pop | config.write("memory = %d\n" % instance.beparams[constants.BE_MEMORY])
|
453 | 8b3fd458 | Iustin Pop | config.write("vcpus = %d\n" % instance.beparams[constants.BE_VCPUS])
|
454 | 65a6f9b7 | Michael Hanselmann | config.write("name = '%s'\n" % instance.name)
|
455 | 65a6f9b7 | Michael Hanselmann | |
456 | 65a6f9b7 | Michael Hanselmann | vif_data = [] |
457 | 65a6f9b7 | Michael Hanselmann | for nic in instance.nics: |
458 | 503b97a9 | Guido Trotter | nic_str = "mac=%s" % (nic.mac)
|
459 | 65a6f9b7 | Michael Hanselmann | ip = getattr(nic, "ip", None) |
460 | 65a6f9b7 | Michael Hanselmann | if ip is not None: |
461 | 65a6f9b7 | Michael Hanselmann | nic_str += ", ip=%s" % ip
|
462 | 65a6f9b7 | Michael Hanselmann | vif_data.append("'%s'" % nic_str)
|
463 | 503b97a9 | Guido Trotter | if nic.nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
|
464 | 503b97a9 | Guido Trotter | nic_str += ", bridge=%s" % nic.nicparams[constants.NIC_LINK]
|
465 | 65a6f9b7 | Michael Hanselmann | |
466 | 65a6f9b7 | Michael Hanselmann | config.write("vif = [%s]\n" % ",".join(vif_data)) |
467 | 65a6f9b7 | Michael Hanselmann | config.write("disk = [%s]\n" % ",".join( |
468 | 65a6f9b7 | Michael Hanselmann | cls._GetConfigFileDiskData(instance.disk_template, |
469 | 65a6f9b7 | Michael Hanselmann | block_devices))) |
470 | 074ca009 | Guido Trotter | |
471 | 07813a9e | Iustin Pop | config.write("root = '%s'\n" % hvp[constants.HV_ROOT_PATH])
|
472 | 65a6f9b7 | Michael Hanselmann | config.write("on_poweroff = 'destroy'\n")
|
473 | 65a6f9b7 | Michael Hanselmann | config.write("on_reboot = 'restart'\n")
|
474 | 65a6f9b7 | Michael Hanselmann | config.write("on_crash = 'restart'\n")
|
475 | 07813a9e | Iustin Pop | config.write("extra = '%s'\n" % hvp[constants.HV_KERNEL_ARGS])
|
476 | 65a6f9b7 | Michael Hanselmann | # just in case it exists
|
477 | 65a6f9b7 | Michael Hanselmann | utils.RemoveFile("/etc/xen/auto/%s" % instance.name)
|
478 | 65a6f9b7 | Michael Hanselmann | try:
|
479 | a985b417 | Iustin Pop | utils.WriteFile("/etc/xen/%s" % instance.name, data=config.getvalue())
|
480 | 73cd67f4 | Guido Trotter | except EnvironmentError, err: |
481 | 73cd67f4 | Guido Trotter | raise errors.HypervisorError("Cannot write Xen instance confile" |
482 | 73cd67f4 | Guido Trotter | " file /etc/xen/%s: %s" %
|
483 | 73cd67f4 | Guido Trotter | (instance.name, err)) |
484 | 73cd67f4 | Guido Trotter | |
485 | 65a6f9b7 | Michael Hanselmann | return True |
486 | 65a6f9b7 | Michael Hanselmann | |
487 | 65a6f9b7 | Michael Hanselmann | |
488 | 65a6f9b7 | Michael Hanselmann | class XenHvmHypervisor(XenHypervisor): |
489 | 65a6f9b7 | Michael Hanselmann | """Xen HVM hypervisor interface"""
|
490 | 65a6f9b7 | Michael Hanselmann | |
491 | 3680f662 | Guido Trotter | ANCILLARY_FILES = XenHypervisor.ANCILLARY_FILES + \ |
492 | 3680f662 | Guido Trotter | [constants.VNC_PASSWORD_FILE] |
493 | 3680f662 | Guido Trotter | |
494 | 205ab586 | Iustin Pop | PARAMETERS = { |
495 | 205ab586 | Iustin Pop | constants.HV_ACPI: hv_base.NO_CHECK, |
496 | 016d04b3 | Michael Hanselmann | constants.HV_BOOT_ORDER: (True, ) +
|
497 | 016d04b3 | Michael Hanselmann | (lambda x: x and len(x.strip("acdn")) == 0, |
498 | 016d04b3 | Michael Hanselmann | "Invalid boot order specified, must be one or more of [acdn]",
|
499 | 016d04b3 | Michael Hanselmann | None, None), |
500 | 205ab586 | Iustin Pop | constants.HV_CDROM_IMAGE_PATH: hv_base.OPT_FILE_CHECK, |
501 | 016d04b3 | Michael Hanselmann | constants.HV_DISK_TYPE: |
502 | 016d04b3 | Michael Hanselmann | hv_base.ParamInSet(True, constants.HT_HVM_VALID_DISK_TYPES),
|
503 | 016d04b3 | Michael Hanselmann | constants.HV_NIC_TYPE: |
504 | 016d04b3 | Michael Hanselmann | hv_base.ParamInSet(True, constants.HT_HVM_VALID_NIC_TYPES),
|
505 | 205ab586 | Iustin Pop | constants.HV_PAE: hv_base.NO_CHECK, |
506 | 016d04b3 | Michael Hanselmann | constants.HV_VNC_BIND_ADDRESS: |
507 | 016d04b3 | Michael Hanselmann | (False, utils.IsValidIP,
|
508 | 016d04b3 | Michael Hanselmann | "VNC bind address is not a valid IP address", None, None), |
509 | 205ab586 | Iustin Pop | constants.HV_KERNEL_PATH: hv_base.REQ_FILE_CHECK, |
510 | 205ab586 | Iustin Pop | constants.HV_DEVICE_MODEL: hv_base.REQ_FILE_CHECK, |
511 | 205ab586 | Iustin Pop | } |
512 | 09ea8710 | Iustin Pop | |
513 | 65a6f9b7 | Michael Hanselmann | @classmethod
|
514 | 07813a9e | Iustin Pop | def _WriteConfigFile(cls, instance, block_devices): |
515 | 65a6f9b7 | Michael Hanselmann | """Create a Xen 3.1 HVM config file.
|
516 | 65a6f9b7 | Michael Hanselmann |
|
517 | 65a6f9b7 | Michael Hanselmann | """
|
518 | a985b417 | Iustin Pop | hvp = instance.hvparams |
519 | a985b417 | Iustin Pop | |
520 | 65a6f9b7 | Michael Hanselmann | config = StringIO() |
521 | 65a6f9b7 | Michael Hanselmann | config.write("# this is autogenerated by Ganeti, please do not edit\n#\n")
|
522 | e2ee1cea | Iustin Pop | |
523 | e2ee1cea | Iustin Pop | # kernel handling
|
524 | e2ee1cea | Iustin Pop | kpath = hvp[constants.HV_KERNEL_PATH] |
525 | e2ee1cea | Iustin Pop | config.write("kernel = '%s'\n" % kpath)
|
526 | e2ee1cea | Iustin Pop | |
527 | 65a6f9b7 | Michael Hanselmann | config.write("builder = 'hvm'\n")
|
528 | 8b3fd458 | Iustin Pop | config.write("memory = %d\n" % instance.beparams[constants.BE_MEMORY])
|
529 | 8b3fd458 | Iustin Pop | config.write("vcpus = %d\n" % instance.beparams[constants.BE_VCPUS])
|
530 | 65a6f9b7 | Michael Hanselmann | config.write("name = '%s'\n" % instance.name)
|
531 | 09ea8710 | Iustin Pop | if hvp[constants.HV_PAE]:
|
532 | a21dda8b | Iustin Pop | config.write("pae = 1\n")
|
533 | a21dda8b | Iustin Pop | else:
|
534 | a21dda8b | Iustin Pop | config.write("pae = 0\n")
|
535 | 09ea8710 | Iustin Pop | if hvp[constants.HV_ACPI]:
|
536 | a21dda8b | Iustin Pop | config.write("acpi = 1\n")
|
537 | a21dda8b | Iustin Pop | else:
|
538 | a21dda8b | Iustin Pop | config.write("acpi = 0\n")
|
539 | 65a6f9b7 | Michael Hanselmann | config.write("apic = 1\n")
|
540 | 09ea8710 | Iustin Pop | config.write("device_model = '%s'\n" % hvp[constants.HV_DEVICE_MODEL])
|
541 | a985b417 | Iustin Pop | config.write("boot = '%s'\n" % hvp[constants.HV_BOOT_ORDER])
|
542 | 65a6f9b7 | Michael Hanselmann | config.write("sdl = 0\n")
|
543 | 97efde45 | Guido Trotter | config.write("usb = 1\n")
|
544 | 97efde45 | Guido Trotter | config.write("usbdevice = 'tablet'\n")
|
545 | 65a6f9b7 | Michael Hanselmann | config.write("vnc = 1\n")
|
546 | a985b417 | Iustin Pop | if hvp[constants.HV_VNC_BIND_ADDRESS] is None: |
547 | d0c11cf7 | Alexander Schreiber | config.write("vnclisten = '%s'\n" % constants.VNC_DEFAULT_BIND_ADDRESS)
|
548 | d0c11cf7 | Alexander Schreiber | else:
|
549 | 6b405598 | Guido Trotter | config.write("vnclisten = '%s'\n" % hvp[constants.HV_VNC_BIND_ADDRESS])
|
550 | 65a6f9b7 | Michael Hanselmann | |
551 | 377d74c9 | Guido Trotter | if instance.network_port > constants.VNC_BASE_PORT:
|
552 | 377d74c9 | Guido Trotter | display = instance.network_port - constants.VNC_BASE_PORT |
553 | 65a6f9b7 | Michael Hanselmann | config.write("vncdisplay = %s\n" % display)
|
554 | 65a6f9b7 | Michael Hanselmann | config.write("vncunused = 0\n")
|
555 | 65a6f9b7 | Michael Hanselmann | else:
|
556 | 65a6f9b7 | Michael Hanselmann | config.write("# vncdisplay = 1\n")
|
557 | 65a6f9b7 | Michael Hanselmann | config.write("vncunused = 1\n")
|
558 | 65a6f9b7 | Michael Hanselmann | |
559 | 65a6f9b7 | Michael Hanselmann | try:
|
560 | 78f66a17 | Guido Trotter | password = utils.ReadFile(constants.VNC_PASSWORD_FILE) |
561 | 78f66a17 | Guido Trotter | except EnvironmentError, err: |
562 | 78f66a17 | Guido Trotter | raise errors.HypervisorError("Failed to open VNC password file %s: %s" % |
563 | 78f66a17 | Guido Trotter | (constants.VNC_PASSWORD_FILE, err)) |
564 | 65a6f9b7 | Michael Hanselmann | |
565 | 65a6f9b7 | Michael Hanselmann | config.write("vncpasswd = '%s'\n" % password.rstrip())
|
566 | 65a6f9b7 | Michael Hanselmann | |
567 | 65a6f9b7 | Michael Hanselmann | config.write("serial = 'pty'\n")
|
568 | 65a6f9b7 | Michael Hanselmann | config.write("localtime = 1\n")
|
569 | 65a6f9b7 | Michael Hanselmann | |
570 | 65a6f9b7 | Michael Hanselmann | vif_data = [] |
571 | a985b417 | Iustin Pop | nic_type = hvp[constants.HV_NIC_TYPE] |
572 | f48148c3 | Iustin Pop | if nic_type is None: |
573 | f48148c3 | Iustin Pop | # ensure old instances don't change
|
574 | f48148c3 | Iustin Pop | nic_type_str = ", type=ioemu"
|
575 | d08f6067 | Guido Trotter | elif nic_type == constants.HT_NIC_PARAVIRTUAL:
|
576 | f48148c3 | Iustin Pop | nic_type_str = ", type=paravirtualized"
|
577 | f48148c3 | Iustin Pop | else:
|
578 | f48148c3 | Iustin Pop | nic_type_str = ", model=%s, type=ioemu" % nic_type
|
579 | 65a6f9b7 | Michael Hanselmann | for nic in instance.nics: |
580 | 503b97a9 | Guido Trotter | nic_str = "mac=%s%s" % (nic.mac, nic_type_str)
|
581 | 65a6f9b7 | Michael Hanselmann | ip = getattr(nic, "ip", None) |
582 | 65a6f9b7 | Michael Hanselmann | if ip is not None: |
583 | 65a6f9b7 | Michael Hanselmann | nic_str += ", ip=%s" % ip
|
584 | 65a6f9b7 | Michael Hanselmann | vif_data.append("'%s'" % nic_str)
|
585 | 503b97a9 | Guido Trotter | if nic.nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
|
586 | 503b97a9 | Guido Trotter | nic_str += ", bridge=%s" % nic.nicparams[constants.NIC_LINK]
|
587 | 65a6f9b7 | Michael Hanselmann | |
588 | 65a6f9b7 | Michael Hanselmann | config.write("vif = [%s]\n" % ",".join(vif_data)) |
589 | a21dda8b | Iustin Pop | disk_data = cls._GetConfigFileDiskData(instance.disk_template, |
590 | a21dda8b | Iustin Pop | block_devices) |
591 | a985b417 | Iustin Pop | disk_type = hvp[constants.HV_DISK_TYPE] |
592 | d08f6067 | Guido Trotter | if disk_type in (None, constants.HT_DISK_IOEMU): |
593 | 5397e0b7 | Alexander Schreiber | replacement = ",ioemu:hd"
|
594 | 5397e0b7 | Alexander Schreiber | else:
|
595 | 5397e0b7 | Alexander Schreiber | replacement = ",hd"
|
596 | 5397e0b7 | Alexander Schreiber | disk_data = [line.replace(",sd", replacement) for line in disk_data] |
597 | a985b417 | Iustin Pop | iso_path = hvp[constants.HV_CDROM_IMAGE_PATH] |
598 | f48148c3 | Iustin Pop | if iso_path:
|
599 | f48148c3 | Iustin Pop | iso = "'file:%s,hdc:cdrom,r'" % iso_path
|
600 | a21dda8b | Iustin Pop | disk_data.append(iso) |
601 | a21dda8b | Iustin Pop | |
602 | a21dda8b | Iustin Pop | config.write("disk = [%s]\n" % (",".join(disk_data))) |
603 | a21dda8b | Iustin Pop | |
604 | 65a6f9b7 | Michael Hanselmann | config.write("on_poweroff = 'destroy'\n")
|
605 | 65a6f9b7 | Michael Hanselmann | config.write("on_reboot = 'restart'\n")
|
606 | 65a6f9b7 | Michael Hanselmann | config.write("on_crash = 'restart'\n")
|
607 | 65a6f9b7 | Michael Hanselmann | # just in case it exists
|
608 | 65a6f9b7 | Michael Hanselmann | utils.RemoveFile("/etc/xen/auto/%s" % instance.name)
|
609 | 65a6f9b7 | Michael Hanselmann | try:
|
610 | 73cd67f4 | Guido Trotter | utils.WriteFile("/etc/xen/%s" % instance.name,
|
611 | 73cd67f4 | Guido Trotter | data=config.getvalue()) |
612 | 73cd67f4 | Guido Trotter | except EnvironmentError, err: |
613 | 73cd67f4 | Guido Trotter | raise errors.HypervisorError("Cannot write Xen instance confile" |
614 | 73cd67f4 | Guido Trotter | " file /etc/xen/%s: %s" %
|
615 | 73cd67f4 | Guido Trotter | (instance.name, err)) |
616 | 73cd67f4 | Guido Trotter | |
617 | 65a6f9b7 | Michael Hanselmann | return True |