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