root / lib / hypervisor / hv_xen.py @ 7d4ae909
History | View | Annotate | Download (37.4 kB)
1 |
#
|
---|---|
2 |
#
|
3 |
|
4 |
# Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 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 logging |
27 |
import errno |
28 |
import string # pylint: disable=W0402 |
29 |
import shutil |
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 |
from ganeti import netutils |
37 |
from ganeti import objects |
38 |
from ganeti import pathutils |
39 |
from ganeti import ssconf |
40 |
|
41 |
|
42 |
XEND_CONFIG_FILE = utils.PathJoin(pathutils.XEN_CONFIG_DIR, "xend-config.sxp")
|
43 |
XL_CONFIG_FILE = utils.PathJoin(pathutils.XEN_CONFIG_DIR, "xen/xl.conf")
|
44 |
VIF_BRIDGE_SCRIPT = utils.PathJoin(pathutils.XEN_CONFIG_DIR, |
45 |
"scripts/vif-bridge")
|
46 |
_DOM0_NAME = "Domain-0"
|
47 |
_DISK_LETTERS = string.ascii_lowercase |
48 |
|
49 |
_FILE_DRIVER_MAP = { |
50 |
constants.FD_LOOP: "file",
|
51 |
constants.FD_BLKTAP: "tap:aio",
|
52 |
constants.FD_BLKTAP2: "tap2:tapdisk:aio",
|
53 |
} |
54 |
|
55 |
|
56 |
def _CreateConfigCpus(cpu_mask): |
57 |
"""Create a CPU config string for Xen's config file.
|
58 |
|
59 |
"""
|
60 |
# Convert the string CPU mask to a list of list of int's
|
61 |
cpu_list = utils.ParseMultiCpuMask(cpu_mask) |
62 |
|
63 |
if len(cpu_list) == 1: |
64 |
all_cpu_mapping = cpu_list[0]
|
65 |
if all_cpu_mapping == constants.CPU_PINNING_OFF:
|
66 |
# If CPU pinning has 1 entry that's "all", then remove the
|
67 |
# parameter from the config file
|
68 |
return None |
69 |
else:
|
70 |
# If CPU pinning has one non-all entry, mapping all vCPUS (the entire
|
71 |
# VM) to one physical CPU, using format 'cpu = "C"'
|
72 |
return "cpu = \"%s\"" % ",".join(map(str, all_cpu_mapping)) |
73 |
else:
|
74 |
|
75 |
def _GetCPUMap(vcpu): |
76 |
if vcpu[0] == constants.CPU_PINNING_ALL_VAL: |
77 |
cpu_map = constants.CPU_PINNING_ALL_XEN |
78 |
else:
|
79 |
cpu_map = ",".join(map(str, vcpu)) |
80 |
return "\"%s\"" % cpu_map |
81 |
|
82 |
# build the result string in format 'cpus = [ "c", "c", "c" ]',
|
83 |
# where each c is a physical CPU number, a range, a list, or any
|
84 |
# combination
|
85 |
return "cpus = [ %s ]" % ", ".join(map(_GetCPUMap, cpu_list)) |
86 |
|
87 |
|
88 |
def _RunXmList(fn, xmllist_errors): |
89 |
"""Helper function for L{_GetXmList} to run "xm list".
|
90 |
|
91 |
@type fn: callable
|
92 |
@param fn: Function returning result of running C{xm list}
|
93 |
@type xmllist_errors: list
|
94 |
@param xmllist_errors: Error list
|
95 |
@rtype: list
|
96 |
|
97 |
"""
|
98 |
result = fn() |
99 |
if result.failed:
|
100 |
logging.error("xm list failed (%s): %s", result.fail_reason,
|
101 |
result.output) |
102 |
xmllist_errors.append(result) |
103 |
raise utils.RetryAgain()
|
104 |
|
105 |
# skip over the heading
|
106 |
return result.stdout.splitlines()
|
107 |
|
108 |
|
109 |
def _ParseXmList(lines, include_node): |
110 |
"""Parses the output of C{xm list}.
|
111 |
|
112 |
@type lines: list
|
113 |
@param lines: Output lines of C{xm list}
|
114 |
@type include_node: boolean
|
115 |
@param include_node: If True, return information for Dom0
|
116 |
@return: list of tuple containing (name, id, memory, vcpus, state, time
|
117 |
spent)
|
118 |
|
119 |
"""
|
120 |
result = [] |
121 |
|
122 |
# Iterate through all lines while ignoring header
|
123 |
for line in lines[1:]: |
124 |
# The format of lines is:
|
125 |
# Name ID Mem(MiB) VCPUs State Time(s)
|
126 |
# Domain-0 0 3418 4 r----- 266.2
|
127 |
data = line.split() |
128 |
if len(data) != 6: |
129 |
raise errors.HypervisorError("Can't parse output of xm list," |
130 |
" line: %s" % line)
|
131 |
try:
|
132 |
data[1] = int(data[1]) |
133 |
data[2] = int(data[2]) |
134 |
data[3] = int(data[3]) |
135 |
data[5] = float(data[5]) |
136 |
except (TypeError, ValueError), err: |
137 |
raise errors.HypervisorError("Can't parse output of xm list," |
138 |
" line: %s, error: %s" % (line, err))
|
139 |
|
140 |
# skip the Domain-0 (optional)
|
141 |
if include_node or data[0] != _DOM0_NAME: |
142 |
result.append(data) |
143 |
|
144 |
return result
|
145 |
|
146 |
|
147 |
def _GetXmList(fn, include_node, _timeout=5): |
148 |
"""Return the list of running instances.
|
149 |
|
150 |
See L{_RunXmList} and L{_ParseXmList} for parameter details.
|
151 |
|
152 |
"""
|
153 |
xmllist_errors = [] |
154 |
try:
|
155 |
lines = utils.Retry(_RunXmList, (0.3, 1.5, 1.0), _timeout, |
156 |
args=(fn, xmllist_errors)) |
157 |
except utils.RetryTimeout:
|
158 |
if xmllist_errors:
|
159 |
xmlist_result = xmllist_errors.pop() |
160 |
|
161 |
errmsg = ("xm list failed, timeout exceeded (%s): %s" %
|
162 |
(xmlist_result.fail_reason, xmlist_result.output)) |
163 |
else:
|
164 |
errmsg = "xm list failed"
|
165 |
|
166 |
raise errors.HypervisorError(errmsg)
|
167 |
|
168 |
return _ParseXmList(lines, include_node)
|
169 |
|
170 |
|
171 |
def _IsInstanceRunning(instance_info): |
172 |
return instance_info == "r-----" \ |
173 |
or instance_info == "-b----" |
174 |
|
175 |
|
176 |
def _IsInstanceShutdown(instance_info): |
177 |
return instance_info == "---s--" |
178 |
|
179 |
|
180 |
def _ParseNodeInfo(info): |
181 |
"""Return information about the node.
|
182 |
|
183 |
@return: a dict with the following keys (memory values in MiB):
|
184 |
- memory_total: the total memory size on the node
|
185 |
- memory_free: the available memory on the node for instances
|
186 |
- nr_cpus: total number of CPUs
|
187 |
- nr_nodes: in a NUMA system, the number of domains
|
188 |
- nr_sockets: the number of physical CPU sockets in the node
|
189 |
- hv_version: the hypervisor version in the form (major, minor)
|
190 |
|
191 |
"""
|
192 |
result = {} |
193 |
cores_per_socket = threads_per_core = nr_cpus = None
|
194 |
xen_major, xen_minor = None, None |
195 |
memory_total = None
|
196 |
memory_free = None
|
197 |
|
198 |
for line in info.splitlines(): |
199 |
fields = line.split(":", 1) |
200 |
|
201 |
if len(fields) < 2: |
202 |
continue
|
203 |
|
204 |
(key, val) = map(lambda s: s.strip(), fields) |
205 |
|
206 |
# Note: in Xen 3, memory has changed to total_memory
|
207 |
if key in ("memory", "total_memory"): |
208 |
memory_total = int(val)
|
209 |
elif key == "free_memory": |
210 |
memory_free = int(val)
|
211 |
elif key == "nr_cpus": |
212 |
nr_cpus = result["cpu_total"] = int(val) |
213 |
elif key == "nr_nodes": |
214 |
result["cpu_nodes"] = int(val) |
215 |
elif key == "cores_per_socket": |
216 |
cores_per_socket = int(val)
|
217 |
elif key == "threads_per_core": |
218 |
threads_per_core = int(val)
|
219 |
elif key == "xen_major": |
220 |
xen_major = int(val)
|
221 |
elif key == "xen_minor": |
222 |
xen_minor = int(val)
|
223 |
|
224 |
if None not in [cores_per_socket, threads_per_core, nr_cpus]: |
225 |
result["cpu_sockets"] = nr_cpus / (cores_per_socket * threads_per_core)
|
226 |
|
227 |
if memory_free is not None: |
228 |
result["memory_free"] = memory_free
|
229 |
|
230 |
if memory_total is not None: |
231 |
result["memory_total"] = memory_total
|
232 |
|
233 |
if not (xen_major is None or xen_minor is None): |
234 |
result[constants.HV_NODEINFO_KEY_VERSION] = (xen_major, xen_minor) |
235 |
|
236 |
return result
|
237 |
|
238 |
|
239 |
def _MergeInstanceInfo(info, fn): |
240 |
"""Updates node information from L{_ParseNodeInfo} with instance info.
|
241 |
|
242 |
@type info: dict
|
243 |
@param info: Result from L{_ParseNodeInfo}
|
244 |
@type fn: callable
|
245 |
@param fn: Function returning result of running C{xm list}
|
246 |
@rtype: dict
|
247 |
|
248 |
"""
|
249 |
total_instmem = 0
|
250 |
|
251 |
for (name, _, mem, vcpus, _, _) in fn(True): |
252 |
if name == _DOM0_NAME:
|
253 |
info["memory_dom0"] = mem
|
254 |
info["dom0_cpus"] = vcpus
|
255 |
|
256 |
# Include Dom0 in total memory usage
|
257 |
total_instmem += mem |
258 |
|
259 |
memory_free = info.get("memory_free")
|
260 |
memory_total = info.get("memory_total")
|
261 |
|
262 |
# Calculate memory used by hypervisor
|
263 |
if None not in [memory_total, memory_free, total_instmem]: |
264 |
info["memory_hv"] = memory_total - memory_free - total_instmem
|
265 |
|
266 |
return info
|
267 |
|
268 |
|
269 |
def _GetNodeInfo(info, fn): |
270 |
"""Combines L{_MergeInstanceInfo} and L{_ParseNodeInfo}.
|
271 |
|
272 |
"""
|
273 |
return _MergeInstanceInfo(_ParseNodeInfo(info), fn)
|
274 |
|
275 |
|
276 |
def _GetConfigFileDiskData(block_devices, blockdev_prefix, |
277 |
_letters=_DISK_LETTERS): |
278 |
"""Get disk directives for Xen config file.
|
279 |
|
280 |
This method builds the xen config disk directive according to the
|
281 |
given disk_template and block_devices.
|
282 |
|
283 |
@param block_devices: list of tuples (cfdev, rldev):
|
284 |
- cfdev: dict containing ganeti config disk part
|
285 |
- rldev: ganeti.bdev.BlockDev object
|
286 |
@param blockdev_prefix: a string containing blockdevice prefix,
|
287 |
e.g. "sd" for /dev/sda
|
288 |
|
289 |
@return: string containing disk directive for xen instance config file
|
290 |
|
291 |
"""
|
292 |
if len(block_devices) > len(_letters): |
293 |
raise errors.HypervisorError("Too many disks") |
294 |
|
295 |
disk_data = [] |
296 |
|
297 |
for sd_suffix, (cfdev, dev_path) in zip(_letters, block_devices): |
298 |
sd_name = blockdev_prefix + sd_suffix |
299 |
|
300 |
if cfdev.mode == constants.DISK_RDWR:
|
301 |
mode = "w"
|
302 |
else:
|
303 |
mode = "r"
|
304 |
|
305 |
if cfdev.dev_type == constants.LD_FILE:
|
306 |
driver = _FILE_DRIVER_MAP[cfdev.physical_id[0]]
|
307 |
else:
|
308 |
driver = "phy"
|
309 |
|
310 |
disk_data.append("'%s:%s,%s,%s'" % (driver, dev_path, sd_name, mode))
|
311 |
|
312 |
return disk_data
|
313 |
|
314 |
|
315 |
class XenHypervisor(hv_base.BaseHypervisor): |
316 |
"""Xen generic hypervisor interface
|
317 |
|
318 |
This is the Xen base class used for both Xen PVM and HVM. It contains
|
319 |
all the functionality that is identical for both.
|
320 |
|
321 |
"""
|
322 |
CAN_MIGRATE = True
|
323 |
REBOOT_RETRY_COUNT = 60
|
324 |
REBOOT_RETRY_INTERVAL = 10
|
325 |
_ROOT_DIR = pathutils.RUN_DIR + "/xen-hypervisor"
|
326 |
_NICS_DIR = _ROOT_DIR + "/nic" # contains NICs' info |
327 |
_DIRS = [_ROOT_DIR, _NICS_DIR] |
328 |
|
329 |
ANCILLARY_FILES = [ |
330 |
XEND_CONFIG_FILE, |
331 |
XL_CONFIG_FILE, |
332 |
VIF_BRIDGE_SCRIPT, |
333 |
] |
334 |
ANCILLARY_FILES_OPT = [ |
335 |
XL_CONFIG_FILE, |
336 |
] |
337 |
|
338 |
def __init__(self, _cfgdir=None, _run_cmd_fn=None, _cmd=None): |
339 |
hv_base.BaseHypervisor.__init__(self)
|
340 |
|
341 |
if _cfgdir is None: |
342 |
self._cfgdir = pathutils.XEN_CONFIG_DIR
|
343 |
else:
|
344 |
self._cfgdir = _cfgdir
|
345 |
|
346 |
if _run_cmd_fn is None: |
347 |
self._run_cmd_fn = utils.RunCmd
|
348 |
else:
|
349 |
self._run_cmd_fn = _run_cmd_fn
|
350 |
|
351 |
self._cmd = _cmd
|
352 |
|
353 |
def _GetCommand(self): |
354 |
"""Returns Xen command to use.
|
355 |
|
356 |
"""
|
357 |
if self._cmd is None: |
358 |
# TODO: Make command a hypervisor parameter
|
359 |
cmd = constants.XEN_CMD |
360 |
else:
|
361 |
cmd = self._cmd
|
362 |
|
363 |
if cmd not in constants.KNOWN_XEN_COMMANDS: |
364 |
raise errors.ProgrammerError("Unknown Xen command '%s'" % cmd) |
365 |
|
366 |
return cmd
|
367 |
|
368 |
def _RunXen(self, args): |
369 |
"""Wrapper around L{utils.process.RunCmd} to run Xen command.
|
370 |
|
371 |
@see: L{utils.process.RunCmd}
|
372 |
|
373 |
"""
|
374 |
cmd = [self._GetCommand()]
|
375 |
cmd.extend(args) |
376 |
|
377 |
return self._run_cmd_fn(cmd) |
378 |
|
379 |
def _ConfigFileName(self, instance_name): |
380 |
"""Get the config file name for an instance.
|
381 |
|
382 |
@param instance_name: instance name
|
383 |
@type instance_name: str
|
384 |
@return: fully qualified path to instance config file
|
385 |
@rtype: str
|
386 |
|
387 |
"""
|
388 |
return utils.PathJoin(self._cfgdir, instance_name) |
389 |
|
390 |
@classmethod
|
391 |
def _WriteNICInfoFile(cls, instance, idx, nic): |
392 |
"""Write the Xen config file for the instance.
|
393 |
|
394 |
This version of the function just writes the config file from static data.
|
395 |
|
396 |
"""
|
397 |
instance_name = instance.name |
398 |
dirs = [(dname, constants.RUN_DIRS_MODE) |
399 |
for dname in cls._DIRS + [cls._InstanceNICDir(instance_name)]] |
400 |
utils.EnsureDirs(dirs) |
401 |
|
402 |
cfg_file = cls._InstanceNICFile(instance_name, idx) |
403 |
data = StringIO() |
404 |
|
405 |
data.write("TAGS=%s\n" % "\ ".join(instance.GetTags())) |
406 |
if nic.netinfo:
|
407 |
netinfo = objects.Network.FromDict(nic.netinfo) |
408 |
data.write("NETWORK_NAME=%s\n" % netinfo.name)
|
409 |
if netinfo.network:
|
410 |
data.write("NETWORK_SUBNET=%s\n" % netinfo.network)
|
411 |
if netinfo.gateway:
|
412 |
data.write("NETWORK_GATEWAY=%s\n" % netinfo.gateway)
|
413 |
if netinfo.network6:
|
414 |
data.write("NETWORK_SUBNET6=%s\n" % netinfo.network6)
|
415 |
if netinfo.gateway6:
|
416 |
data.write("NETWORK_GATEWAY6=%s\n" % netinfo.gateway6)
|
417 |
if netinfo.mac_prefix:
|
418 |
data.write("NETWORK_MAC_PREFIX=%s\n" % netinfo.mac_prefix)
|
419 |
if netinfo.tags:
|
420 |
data.write("NETWORK_TAGS=%s\n" % "\ ".join(netinfo.tags)) |
421 |
|
422 |
data.write("MAC=%s\n" % nic.mac)
|
423 |
data.write("IP=%s\n" % nic.ip)
|
424 |
data.write("MODE=%s\n" % nic.nicparams[constants.NIC_MODE])
|
425 |
data.write("LINK=%s\n" % nic.nicparams[constants.NIC_LINK])
|
426 |
|
427 |
try:
|
428 |
utils.WriteFile(cfg_file, data=data.getvalue()) |
429 |
except EnvironmentError, err: |
430 |
raise errors.HypervisorError("Cannot write Xen instance configuration" |
431 |
" file %s: %s" % (cfg_file, err))
|
432 |
|
433 |
@classmethod
|
434 |
def _InstanceNICDir(cls, instance_name): |
435 |
"""Returns the directory holding the tap device files for a given instance.
|
436 |
|
437 |
"""
|
438 |
return utils.PathJoin(cls._NICS_DIR, instance_name)
|
439 |
|
440 |
@classmethod
|
441 |
def _InstanceNICFile(cls, instance_name, seq): |
442 |
"""Returns the name of the file containing the tap device for a given NIC
|
443 |
|
444 |
"""
|
445 |
return utils.PathJoin(cls._InstanceNICDir(instance_name), str(seq)) |
446 |
|
447 |
@classmethod
|
448 |
def _GetConfig(cls, instance, startup_memory, block_devices): |
449 |
"""Build Xen configuration for an instance.
|
450 |
|
451 |
"""
|
452 |
raise NotImplementedError |
453 |
|
454 |
def _WriteConfigFile(self, instance_name, data): |
455 |
"""Write the Xen config file for the instance.
|
456 |
|
457 |
This version of the function just writes the config file from static data.
|
458 |
|
459 |
"""
|
460 |
# just in case it exists
|
461 |
utils.RemoveFile(utils.PathJoin(self._cfgdir, "auto", instance_name)) |
462 |
|
463 |
cfg_file = self._ConfigFileName(instance_name)
|
464 |
try:
|
465 |
utils.WriteFile(cfg_file, data=data) |
466 |
except EnvironmentError, err: |
467 |
raise errors.HypervisorError("Cannot write Xen instance configuration" |
468 |
" file %s: %s" % (cfg_file, err))
|
469 |
|
470 |
def _ReadConfigFile(self, instance_name): |
471 |
"""Returns the contents of the instance config file.
|
472 |
|
473 |
"""
|
474 |
filename = self._ConfigFileName(instance_name)
|
475 |
|
476 |
try:
|
477 |
file_content = utils.ReadFile(filename) |
478 |
except EnvironmentError, err: |
479 |
raise errors.HypervisorError("Failed to load Xen config file: %s" % err) |
480 |
|
481 |
return file_content
|
482 |
|
483 |
def _RemoveConfigFile(self, instance_name): |
484 |
"""Remove the xen configuration file.
|
485 |
|
486 |
"""
|
487 |
utils.RemoveFile(self._ConfigFileName(instance_name))
|
488 |
try:
|
489 |
shutil.rmtree(self._InstanceNICDir(instance_name))
|
490 |
except OSError, err: |
491 |
if err.errno != errno.ENOENT:
|
492 |
raise
|
493 |
|
494 |
def _StashConfigFile(self, instance_name): |
495 |
"""Move the Xen config file to the log directory and return its new path.
|
496 |
|
497 |
"""
|
498 |
old_filename = self._ConfigFileName(instance_name)
|
499 |
base = ("%s-%s" %
|
500 |
(instance_name, utils.TimestampForFilename())) |
501 |
new_filename = utils.PathJoin(pathutils.LOG_XEN_DIR, base) |
502 |
utils.RenameFile(old_filename, new_filename) |
503 |
return new_filename
|
504 |
|
505 |
def _GetXmList(self, include_node): |
506 |
"""Wrapper around module level L{_GetXmList}.
|
507 |
|
508 |
"""
|
509 |
return _GetXmList(lambda: self._RunXen(["list"]), include_node) |
510 |
|
511 |
def ListInstances(self): |
512 |
"""Get the list of running instances.
|
513 |
|
514 |
"""
|
515 |
xm_list = self._GetXmList(False) |
516 |
names = [info[0] for info in xm_list] |
517 |
return names
|
518 |
|
519 |
def GetInstanceInfo(self, instance_name): |
520 |
"""Get instance properties.
|
521 |
|
522 |
@param instance_name: the instance name
|
523 |
|
524 |
@return: tuple (name, id, memory, vcpus, stat, times)
|
525 |
|
526 |
"""
|
527 |
xm_list = self._GetXmList(instance_name == _DOM0_NAME)
|
528 |
result = None
|
529 |
for data in xm_list: |
530 |
if data[0] == instance_name: |
531 |
result = data |
532 |
break
|
533 |
return result
|
534 |
|
535 |
def GetAllInstancesInfo(self): |
536 |
"""Get properties of all instances.
|
537 |
|
538 |
@return: list of tuples (name, id, memory, vcpus, stat, times)
|
539 |
|
540 |
"""
|
541 |
xm_list = self._GetXmList(False) |
542 |
return xm_list
|
543 |
|
544 |
def _MakeConfigFile(self, instance, startup_memory, block_devices): |
545 |
"""Gather configuration details and write to disk.
|
546 |
|
547 |
See L{_GetConfig} for arguments.
|
548 |
|
549 |
"""
|
550 |
buf = StringIO() |
551 |
buf.write("# Automatically generated by Ganeti. Do not edit!\n")
|
552 |
buf.write("\n")
|
553 |
buf.write(self._GetConfig(instance, startup_memory, block_devices))
|
554 |
buf.write("\n")
|
555 |
|
556 |
self._WriteConfigFile(instance.name, buf.getvalue())
|
557 |
|
558 |
def StartInstance(self, instance, block_devices, startup_paused): |
559 |
"""Start an instance.
|
560 |
|
561 |
"""
|
562 |
startup_memory = self._InstanceStartupMemory(instance)
|
563 |
|
564 |
self._MakeConfigFile(instance, startup_memory, block_devices)
|
565 |
|
566 |
cmd = ["create"]
|
567 |
if startup_paused:
|
568 |
cmd.append("-p")
|
569 |
cmd.append(self._ConfigFileName(instance.name))
|
570 |
|
571 |
result = self._RunXen(cmd)
|
572 |
if result.failed:
|
573 |
# Move the Xen configuration file to the log directory to avoid
|
574 |
# leaving a stale config file behind.
|
575 |
stashed_config = self._StashConfigFile(instance.name)
|
576 |
raise errors.HypervisorError("Failed to start instance %s: %s (%s). Moved" |
577 |
" config file to %s" %
|
578 |
(instance.name, result.fail_reason, |
579 |
result.output, stashed_config)) |
580 |
|
581 |
def StopInstance(self, instance, force=False, retry=False, name=None): |
582 |
"""Stop an instance.
|
583 |
|
584 |
"""
|
585 |
if name is None: |
586 |
name = instance.name |
587 |
|
588 |
return self._StopInstance(name, force) |
589 |
|
590 |
def _ShutdownInstance(self, name): |
591 |
"""Shutdown an instance if the instance is running.
|
592 |
|
593 |
@type name: string
|
594 |
@param name: name of the instance to stop
|
595 |
|
596 |
The '-w' flag waits for shutdown to complete which avoids the need
|
597 |
to poll in the case where we want to destroy the domain
|
598 |
immediately after shutdown.
|
599 |
|
600 |
"""
|
601 |
instance_info = self.GetInstanceInfo(name)
|
602 |
|
603 |
if instance_info is None or _IsInstanceShutdown(instance_info[4]): |
604 |
logging.info("Failed to shutdown instance %s, not running", name)
|
605 |
return None |
606 |
|
607 |
return self._RunXen(["shutdown", "-w", name]) |
608 |
|
609 |
def _DestroyInstance(self, name): |
610 |
"""Destroy an instance if the instance if the instance exists.
|
611 |
|
612 |
@type name: string
|
613 |
@param name: name of the instance to destroy
|
614 |
|
615 |
"""
|
616 |
instance_info = self.GetInstanceInfo(name)
|
617 |
|
618 |
if instance_info is None: |
619 |
logging.info("Failed to destroy instance %s, does not exist", name)
|
620 |
return None |
621 |
|
622 |
return self._RunXen(["destroy", name]) |
623 |
|
624 |
def _StopInstance(self, name, force): |
625 |
"""Stop an instance.
|
626 |
|
627 |
@type name: string
|
628 |
@param name: name of the instance to destroy
|
629 |
|
630 |
@type force: boolean
|
631 |
@param force: whether to do a "hard" stop (destroy)
|
632 |
|
633 |
"""
|
634 |
if force:
|
635 |
result = self._DestroyInstance(name)
|
636 |
else:
|
637 |
self._ShutdownInstance(name)
|
638 |
result = self._DestroyInstance(name)
|
639 |
|
640 |
if result is not None and result.failed and \ |
641 |
self.GetInstanceInfo(name) is not None: |
642 |
raise errors.HypervisorError("Failed to stop instance %s: %s, %s" % |
643 |
(name, result.fail_reason, result.output)) |
644 |
|
645 |
# Remove configuration file if stopping/starting instance was successful
|
646 |
self._RemoveConfigFile(name)
|
647 |
|
648 |
def RebootInstance(self, instance): |
649 |
"""Reboot an instance.
|
650 |
|
651 |
"""
|
652 |
ini_info = self.GetInstanceInfo(instance.name)
|
653 |
|
654 |
if ini_info is None: |
655 |
raise errors.HypervisorError("Failed to reboot instance %s," |
656 |
" not running" % instance.name)
|
657 |
|
658 |
result = self._RunXen(["reboot", instance.name]) |
659 |
if result.failed:
|
660 |
raise errors.HypervisorError("Failed to reboot instance %s: %s, %s" % |
661 |
(instance.name, result.fail_reason, |
662 |
result.output)) |
663 |
|
664 |
def _CheckInstance(): |
665 |
new_info = self.GetInstanceInfo(instance.name)
|
666 |
|
667 |
# check if the domain ID has changed or the run time has decreased
|
668 |
if (new_info is not None and |
669 |
(new_info[1] != ini_info[1] or new_info[5] < ini_info[5])): |
670 |
return
|
671 |
|
672 |
raise utils.RetryAgain()
|
673 |
|
674 |
try:
|
675 |
utils.Retry(_CheckInstance, self.REBOOT_RETRY_INTERVAL,
|
676 |
self.REBOOT_RETRY_INTERVAL * self.REBOOT_RETRY_COUNT) |
677 |
except utils.RetryTimeout:
|
678 |
raise errors.HypervisorError("Failed to reboot instance %s: instance" |
679 |
" did not reboot in the expected interval" %
|
680 |
(instance.name, )) |
681 |
|
682 |
def BalloonInstanceMemory(self, instance, mem): |
683 |
"""Balloon an instance memory to a certain value.
|
684 |
|
685 |
@type instance: L{objects.Instance}
|
686 |
@param instance: instance to be accepted
|
687 |
@type mem: int
|
688 |
@param mem: actual memory size to use for instance runtime
|
689 |
|
690 |
"""
|
691 |
result = self._RunXen(["mem-set", instance.name, mem]) |
692 |
if result.failed:
|
693 |
raise errors.HypervisorError("Failed to balloon instance %s: %s (%s)" % |
694 |
(instance.name, result.fail_reason, |
695 |
result.output)) |
696 |
|
697 |
# Update configuration file
|
698 |
cmd = ["sed", "-ie", "s/^memory.*$/memory = %s/" % mem] |
699 |
cmd.append(self._ConfigFileName(instance.name))
|
700 |
|
701 |
result = utils.RunCmd(cmd) |
702 |
if result.failed:
|
703 |
raise errors.HypervisorError("Failed to update memory for %s: %s (%s)" % |
704 |
(instance.name, result.fail_reason, |
705 |
result.output)) |
706 |
|
707 |
def GetNodeInfo(self): |
708 |
"""Return information about the node.
|
709 |
|
710 |
@see: L{_GetNodeInfo} and L{_ParseNodeInfo}
|
711 |
|
712 |
"""
|
713 |
result = self._RunXen(["info"]) |
714 |
if result.failed:
|
715 |
logging.error("Can't run 'xm info' (%s): %s", result.fail_reason,
|
716 |
result.output) |
717 |
return None |
718 |
|
719 |
return _GetNodeInfo(result.stdout, self._GetXmList) |
720 |
|
721 |
@classmethod
|
722 |
def GetInstanceConsole(cls, instance, hvparams, beparams): |
723 |
"""Return a command for connecting to the console of an instance.
|
724 |
|
725 |
"""
|
726 |
return objects.InstanceConsole(instance=instance.name,
|
727 |
kind=constants.CONS_SSH, |
728 |
host=instance.primary_node, |
729 |
user=constants.SSH_CONSOLE_USER, |
730 |
command=[pathutils.XEN_CONSOLE_WRAPPER, |
731 |
constants.XEN_CMD, instance.name]) |
732 |
|
733 |
def Verify(self): |
734 |
"""Verify the hypervisor.
|
735 |
|
736 |
For Xen, this verifies that the xend process is running.
|
737 |
|
738 |
@return: Problem description if something is wrong, C{None} otherwise
|
739 |
|
740 |
"""
|
741 |
result = self._RunXen(["info"]) |
742 |
if result.failed:
|
743 |
return "'xm info' failed: %s, %s" % (result.fail_reason, result.output) |
744 |
|
745 |
return None |
746 |
|
747 |
def MigrationInfo(self, instance): |
748 |
"""Get instance information to perform a migration.
|
749 |
|
750 |
@type instance: L{objects.Instance}
|
751 |
@param instance: instance to be migrated
|
752 |
@rtype: string
|
753 |
@return: content of the xen config file
|
754 |
|
755 |
"""
|
756 |
return self._ReadConfigFile(instance.name) |
757 |
|
758 |
def AcceptInstance(self, instance, info, target): |
759 |
"""Prepare to accept an instance.
|
760 |
|
761 |
@type instance: L{objects.Instance}
|
762 |
@param instance: instance to be accepted
|
763 |
@type info: string
|
764 |
@param info: content of the xen config file on the source node
|
765 |
@type target: string
|
766 |
@param target: target host (usually ip), on this node
|
767 |
|
768 |
"""
|
769 |
pass
|
770 |
|
771 |
def FinalizeMigrationDst(self, instance, info, success): |
772 |
"""Finalize an instance migration.
|
773 |
|
774 |
After a successful migration we write the xen config file.
|
775 |
We do nothing on a failure, as we did not change anything at accept time.
|
776 |
|
777 |
@type instance: L{objects.Instance}
|
778 |
@param instance: instance whose migration is being finalized
|
779 |
@type info: string
|
780 |
@param info: content of the xen config file on the source node
|
781 |
@type success: boolean
|
782 |
@param success: whether the migration was a success or a failure
|
783 |
|
784 |
"""
|
785 |
if success:
|
786 |
self._WriteConfigFile(instance.name, info)
|
787 |
|
788 |
def MigrateInstance(self, instance, target, live): |
789 |
"""Migrate an instance to a target node.
|
790 |
|
791 |
The migration will not be attempted if the instance is not
|
792 |
currently running.
|
793 |
|
794 |
@type instance: L{objects.Instance}
|
795 |
@param instance: the instance to be migrated
|
796 |
@type target: string
|
797 |
@param target: ip address of the target node
|
798 |
@type live: boolean
|
799 |
@param live: perform a live migration
|
800 |
|
801 |
"""
|
802 |
port = instance.hvparams[constants.HV_MIGRATION_PORT] |
803 |
|
804 |
# TODO: Pass cluster name via RPC
|
805 |
cluster_name = ssconf.SimpleStore().GetClusterName() |
806 |
|
807 |
return self._MigrateInstance(cluster_name, instance.name, target, port, |
808 |
live) |
809 |
|
810 |
def _MigrateInstance(self, cluster_name, instance_name, target, port, live, |
811 |
_ping_fn=netutils.TcpPing): |
812 |
"""Migrate an instance to a target node.
|
813 |
|
814 |
@see: L{MigrateInstance} for details
|
815 |
|
816 |
"""
|
817 |
if self.GetInstanceInfo(instance_name) is None: |
818 |
raise errors.HypervisorError("Instance not running, cannot migrate") |
819 |
|
820 |
cmd = self._GetCommand()
|
821 |
|
822 |
if (cmd == constants.XEN_CMD_XM and |
823 |
not _ping_fn(target, port, live_port_needed=True)): |
824 |
raise errors.HypervisorError("Remote host %s not listening on port" |
825 |
" %s, cannot migrate" % (target, port))
|
826 |
|
827 |
args = ["migrate"]
|
828 |
|
829 |
if cmd == constants.XEN_CMD_XM:
|
830 |
args.extend(["-p", "%d" % port]) |
831 |
if live:
|
832 |
args.append("-l")
|
833 |
|
834 |
elif cmd == constants.XEN_CMD_XL:
|
835 |
args.extend([ |
836 |
"-s", constants.XL_SSH_CMD % cluster_name,
|
837 |
"-C", self._ConfigFileName(instance_name), |
838 |
]) |
839 |
|
840 |
else:
|
841 |
raise errors.HypervisorError("Unsupported Xen command: %s" % self._cmd) |
842 |
|
843 |
args.extend([instance_name, target]) |
844 |
|
845 |
result = self._RunXen(args)
|
846 |
if result.failed:
|
847 |
raise errors.HypervisorError("Failed to migrate instance %s: %s" % |
848 |
(instance_name, result.output)) |
849 |
|
850 |
def FinalizeMigrationSource(self, instance, success, live): |
851 |
"""Finalize the instance migration on the source node.
|
852 |
|
853 |
@type instance: L{objects.Instance}
|
854 |
@param instance: the instance that was migrated
|
855 |
@type success: bool
|
856 |
@param success: whether the migration succeeded or not
|
857 |
@type live: bool
|
858 |
@param live: whether the user requested a live migration or not
|
859 |
|
860 |
"""
|
861 |
# pylint: disable=W0613
|
862 |
if success:
|
863 |
# remove old xen file after migration succeeded
|
864 |
try:
|
865 |
self._RemoveConfigFile(instance.name)
|
866 |
except EnvironmentError: |
867 |
logging.exception("Failure while removing instance config file")
|
868 |
|
869 |
def GetMigrationStatus(self, instance): |
870 |
"""Get the migration status
|
871 |
|
872 |
As MigrateInstance for Xen is still blocking, if this method is called it
|
873 |
means that MigrateInstance has completed successfully. So we can safely
|
874 |
assume that the migration was successful and notify this fact to the client.
|
875 |
|
876 |
@type instance: L{objects.Instance}
|
877 |
@param instance: the instance that is being migrated
|
878 |
@rtype: L{objects.MigrationStatus}
|
879 |
@return: the status of the current migration (one of
|
880 |
L{constants.HV_MIGRATION_VALID_STATUSES}), plus any additional
|
881 |
progress info that can be retrieved from the hypervisor
|
882 |
|
883 |
"""
|
884 |
return objects.MigrationStatus(status=constants.HV_MIGRATION_COMPLETED)
|
885 |
|
886 |
@classmethod
|
887 |
def PowercycleNode(cls): |
888 |
"""Xen-specific powercycle.
|
889 |
|
890 |
This first does a Linux reboot (which triggers automatically a Xen
|
891 |
reboot), and if that fails it tries to do a Xen reboot. The reason
|
892 |
we don't try a Xen reboot first is that the xen reboot launches an
|
893 |
external command which connects to the Xen hypervisor, and that
|
894 |
won't work in case the root filesystem is broken and/or the xend
|
895 |
daemon is not working.
|
896 |
|
897 |
"""
|
898 |
try:
|
899 |
cls.LinuxPowercycle() |
900 |
finally:
|
901 |
utils.RunCmd([constants.XEN_CMD, "debug", "R"]) |
902 |
|
903 |
|
904 |
class XenPvmHypervisor(XenHypervisor): |
905 |
"""Xen PVM hypervisor interface"""
|
906 |
|
907 |
PARAMETERS = { |
908 |
constants.HV_USE_BOOTLOADER: hv_base.NO_CHECK, |
909 |
constants.HV_BOOTLOADER_PATH: hv_base.OPT_FILE_CHECK, |
910 |
constants.HV_BOOTLOADER_ARGS: hv_base.NO_CHECK, |
911 |
constants.HV_KERNEL_PATH: hv_base.REQ_FILE_CHECK, |
912 |
constants.HV_INITRD_PATH: hv_base.OPT_FILE_CHECK, |
913 |
constants.HV_ROOT_PATH: hv_base.NO_CHECK, |
914 |
constants.HV_KERNEL_ARGS: hv_base.NO_CHECK, |
915 |
constants.HV_MIGRATION_PORT: hv_base.REQ_NET_PORT_CHECK, |
916 |
constants.HV_MIGRATION_MODE: hv_base.MIGRATION_MODE_CHECK, |
917 |
# TODO: Add a check for the blockdev prefix (matching [a-z:] or similar).
|
918 |
constants.HV_BLOCKDEV_PREFIX: hv_base.NO_CHECK, |
919 |
constants.HV_REBOOT_BEHAVIOR: |
920 |
hv_base.ParamInSet(True, constants.REBOOT_BEHAVIORS),
|
921 |
constants.HV_CPU_MASK: hv_base.OPT_MULTI_CPU_MASK_CHECK, |
922 |
constants.HV_CPU_CAP: hv_base.OPT_NONNEGATIVE_INT_CHECK, |
923 |
constants.HV_CPU_WEIGHT: |
924 |
(False, lambda x: 0 < x < 65536, "invalid weight", None, None), |
925 |
constants.HV_VIF_SCRIPT: hv_base.OPT_FILE_CHECK, |
926 |
} |
927 |
|
928 |
def _GetConfig(self, instance, startup_memory, block_devices): |
929 |
"""Write the Xen config file for the instance.
|
930 |
|
931 |
"""
|
932 |
hvp = instance.hvparams |
933 |
config = StringIO() |
934 |
config.write("# this is autogenerated by Ganeti, please do not edit\n#\n")
|
935 |
|
936 |
# if bootloader is True, use bootloader instead of kernel and ramdisk
|
937 |
# parameters.
|
938 |
if hvp[constants.HV_USE_BOOTLOADER]:
|
939 |
# bootloader handling
|
940 |
bootloader_path = hvp[constants.HV_BOOTLOADER_PATH] |
941 |
if bootloader_path:
|
942 |
config.write("bootloader = '%s'\n" % bootloader_path)
|
943 |
else:
|
944 |
raise errors.HypervisorError("Bootloader enabled, but missing" |
945 |
" bootloader path")
|
946 |
|
947 |
bootloader_args = hvp[constants.HV_BOOTLOADER_ARGS] |
948 |
if bootloader_args:
|
949 |
config.write("bootargs = '%s'\n" % bootloader_args)
|
950 |
else:
|
951 |
# kernel handling
|
952 |
kpath = hvp[constants.HV_KERNEL_PATH] |
953 |
config.write("kernel = '%s'\n" % kpath)
|
954 |
|
955 |
# initrd handling
|
956 |
initrd_path = hvp[constants.HV_INITRD_PATH] |
957 |
if initrd_path:
|
958 |
config.write("ramdisk = '%s'\n" % initrd_path)
|
959 |
|
960 |
# rest of the settings
|
961 |
config.write("memory = %d\n" % startup_memory)
|
962 |
config.write("maxmem = %d\n" % instance.beparams[constants.BE_MAXMEM])
|
963 |
config.write("vcpus = %d\n" % instance.beparams[constants.BE_VCPUS])
|
964 |
cpu_pinning = _CreateConfigCpus(hvp[constants.HV_CPU_MASK]) |
965 |
if cpu_pinning:
|
966 |
config.write("%s\n" % cpu_pinning)
|
967 |
cpu_cap = hvp[constants.HV_CPU_CAP] |
968 |
if cpu_cap:
|
969 |
config.write("cpu_cap=%d\n" % cpu_cap)
|
970 |
cpu_weight = hvp[constants.HV_CPU_WEIGHT] |
971 |
if cpu_weight:
|
972 |
config.write("cpu_weight=%d\n" % cpu_weight)
|
973 |
|
974 |
config.write("name = '%s'\n" % instance.name)
|
975 |
|
976 |
vif_data = [] |
977 |
for idx, nic in enumerate(instance.nics): |
978 |
nic_str = "mac=%s" % (nic.mac)
|
979 |
ip = getattr(nic, "ip", None) |
980 |
if ip is not None: |
981 |
nic_str += ", ip=%s" % ip
|
982 |
if nic.nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
|
983 |
nic_str += ", bridge=%s" % nic.nicparams[constants.NIC_LINK]
|
984 |
if hvp[constants.HV_VIF_SCRIPT]:
|
985 |
nic_str += ", script=%s" % hvp[constants.HV_VIF_SCRIPT]
|
986 |
vif_data.append("'%s'" % nic_str)
|
987 |
self._WriteNICInfoFile(instance, idx, nic)
|
988 |
|
989 |
disk_data = \ |
990 |
_GetConfigFileDiskData(block_devices, hvp[constants.HV_BLOCKDEV_PREFIX]) |
991 |
|
992 |
config.write("vif = [%s]\n" % ",".join(vif_data)) |
993 |
config.write("disk = [%s]\n" % ",".join(disk_data)) |
994 |
|
995 |
if hvp[constants.HV_ROOT_PATH]:
|
996 |
config.write("root = '%s'\n" % hvp[constants.HV_ROOT_PATH])
|
997 |
config.write("on_poweroff = 'destroy'\n")
|
998 |
if hvp[constants.HV_REBOOT_BEHAVIOR] == constants.INSTANCE_REBOOT_ALLOWED:
|
999 |
config.write("on_reboot = 'restart'\n")
|
1000 |
else:
|
1001 |
config.write("on_reboot = 'destroy'\n")
|
1002 |
config.write("on_crash = 'restart'\n")
|
1003 |
config.write("extra = '%s'\n" % hvp[constants.HV_KERNEL_ARGS])
|
1004 |
|
1005 |
return config.getvalue()
|
1006 |
|
1007 |
|
1008 |
class XenHvmHypervisor(XenHypervisor): |
1009 |
"""Xen HVM hypervisor interface"""
|
1010 |
|
1011 |
ANCILLARY_FILES = XenHypervisor.ANCILLARY_FILES + [ |
1012 |
pathutils.VNC_PASSWORD_FILE, |
1013 |
] |
1014 |
ANCILLARY_FILES_OPT = XenHypervisor.ANCILLARY_FILES_OPT + [ |
1015 |
pathutils.VNC_PASSWORD_FILE, |
1016 |
] |
1017 |
|
1018 |
PARAMETERS = { |
1019 |
constants.HV_ACPI: hv_base.NO_CHECK, |
1020 |
constants.HV_BOOT_ORDER: (True, ) +
|
1021 |
(lambda x: x and len(x.strip("acdn")) == 0, |
1022 |
"Invalid boot order specified, must be one or more of [acdn]",
|
1023 |
None, None), |
1024 |
constants.HV_CDROM_IMAGE_PATH: hv_base.OPT_FILE_CHECK, |
1025 |
constants.HV_DISK_TYPE: |
1026 |
hv_base.ParamInSet(True, constants.HT_HVM_VALID_DISK_TYPES),
|
1027 |
constants.HV_NIC_TYPE: |
1028 |
hv_base.ParamInSet(True, constants.HT_HVM_VALID_NIC_TYPES),
|
1029 |
constants.HV_PAE: hv_base.NO_CHECK, |
1030 |
constants.HV_VNC_BIND_ADDRESS: |
1031 |
(False, netutils.IP4Address.IsValid,
|
1032 |
"VNC bind address is not a valid IP address", None, None), |
1033 |
constants.HV_KERNEL_PATH: hv_base.REQ_FILE_CHECK, |
1034 |
constants.HV_DEVICE_MODEL: hv_base.REQ_FILE_CHECK, |
1035 |
constants.HV_VNC_PASSWORD_FILE: hv_base.REQ_FILE_CHECK, |
1036 |
constants.HV_MIGRATION_PORT: hv_base.REQ_NET_PORT_CHECK, |
1037 |
constants.HV_MIGRATION_MODE: hv_base.MIGRATION_MODE_CHECK, |
1038 |
constants.HV_USE_LOCALTIME: hv_base.NO_CHECK, |
1039 |
# TODO: Add a check for the blockdev prefix (matching [a-z:] or similar).
|
1040 |
constants.HV_BLOCKDEV_PREFIX: hv_base.NO_CHECK, |
1041 |
# Add PCI passthrough
|
1042 |
constants.HV_PASSTHROUGH: hv_base.NO_CHECK, |
1043 |
constants.HV_REBOOT_BEHAVIOR: |
1044 |
hv_base.ParamInSet(True, constants.REBOOT_BEHAVIORS),
|
1045 |
constants.HV_CPU_MASK: hv_base.OPT_MULTI_CPU_MASK_CHECK, |
1046 |
constants.HV_CPU_CAP: hv_base.NO_CHECK, |
1047 |
constants.HV_CPU_WEIGHT: |
1048 |
(False, lambda x: 0 < x < 65535, "invalid weight", None, None), |
1049 |
constants.HV_VIF_TYPE: |
1050 |
hv_base.ParamInSet(False, constants.HT_HVM_VALID_VIF_TYPES),
|
1051 |
constants.HV_VIRIDIAN: hv_base.NO_CHECK, |
1052 |
constants.HV_VIF_SCRIPT: hv_base.OPT_FILE_CHECK, |
1053 |
} |
1054 |
|
1055 |
def _GetConfig(self, instance, startup_memory, block_devices): |
1056 |
"""Create a Xen 3.1 HVM config file.
|
1057 |
|
1058 |
"""
|
1059 |
hvp = instance.hvparams |
1060 |
|
1061 |
config = StringIO() |
1062 |
|
1063 |
# kernel handling
|
1064 |
kpath = hvp[constants.HV_KERNEL_PATH] |
1065 |
config.write("kernel = '%s'\n" % kpath)
|
1066 |
|
1067 |
config.write("builder = 'hvm'\n")
|
1068 |
config.write("memory = %d\n" % startup_memory)
|
1069 |
config.write("maxmem = %d\n" % instance.beparams[constants.BE_MAXMEM])
|
1070 |
config.write("vcpus = %d\n" % instance.beparams[constants.BE_VCPUS])
|
1071 |
cpu_pinning = _CreateConfigCpus(hvp[constants.HV_CPU_MASK]) |
1072 |
if cpu_pinning:
|
1073 |
config.write("%s\n" % cpu_pinning)
|
1074 |
cpu_cap = hvp[constants.HV_CPU_CAP] |
1075 |
if cpu_cap:
|
1076 |
config.write("cpu_cap=%d\n" % cpu_cap)
|
1077 |
cpu_weight = hvp[constants.HV_CPU_WEIGHT] |
1078 |
if cpu_weight:
|
1079 |
config.write("cpu_weight=%d\n" % cpu_weight)
|
1080 |
|
1081 |
config.write("name = '%s'\n" % instance.name)
|
1082 |
if hvp[constants.HV_PAE]:
|
1083 |
config.write("pae = 1\n")
|
1084 |
else:
|
1085 |
config.write("pae = 0\n")
|
1086 |
if hvp[constants.HV_ACPI]:
|
1087 |
config.write("acpi = 1\n")
|
1088 |
else:
|
1089 |
config.write("acpi = 0\n")
|
1090 |
if hvp[constants.HV_VIRIDIAN]:
|
1091 |
config.write("viridian = 1\n")
|
1092 |
else:
|
1093 |
config.write("viridian = 0\n")
|
1094 |
|
1095 |
config.write("apic = 1\n")
|
1096 |
config.write("device_model = '%s'\n" % hvp[constants.HV_DEVICE_MODEL])
|
1097 |
config.write("boot = '%s'\n" % hvp[constants.HV_BOOT_ORDER])
|
1098 |
config.write("sdl = 0\n")
|
1099 |
config.write("usb = 1\n")
|
1100 |
config.write("usbdevice = 'tablet'\n")
|
1101 |
config.write("vnc = 1\n")
|
1102 |
if hvp[constants.HV_VNC_BIND_ADDRESS] is None: |
1103 |
config.write("vnclisten = '%s'\n" % constants.VNC_DEFAULT_BIND_ADDRESS)
|
1104 |
else:
|
1105 |
config.write("vnclisten = '%s'\n" % hvp[constants.HV_VNC_BIND_ADDRESS])
|
1106 |
|
1107 |
if instance.network_port > constants.VNC_BASE_PORT:
|
1108 |
display = instance.network_port - constants.VNC_BASE_PORT |
1109 |
config.write("vncdisplay = %s\n" % display)
|
1110 |
config.write("vncunused = 0\n")
|
1111 |
else:
|
1112 |
config.write("# vncdisplay = 1\n")
|
1113 |
config.write("vncunused = 1\n")
|
1114 |
|
1115 |
vnc_pwd_file = hvp[constants.HV_VNC_PASSWORD_FILE] |
1116 |
try:
|
1117 |
password = utils.ReadFile(vnc_pwd_file) |
1118 |
except EnvironmentError, err: |
1119 |
raise errors.HypervisorError("Failed to open VNC password file %s: %s" % |
1120 |
(vnc_pwd_file, err)) |
1121 |
|
1122 |
config.write("vncpasswd = '%s'\n" % password.rstrip())
|
1123 |
|
1124 |
config.write("serial = 'pty'\n")
|
1125 |
if hvp[constants.HV_USE_LOCALTIME]:
|
1126 |
config.write("localtime = 1\n")
|
1127 |
|
1128 |
vif_data = [] |
1129 |
# Note: what is called 'nic_type' here, is used as value for the xen nic
|
1130 |
# vif config parameter 'model'. For the xen nic vif parameter 'type', we use
|
1131 |
# the 'vif_type' to avoid a clash of notation.
|
1132 |
nic_type = hvp[constants.HV_NIC_TYPE] |
1133 |
|
1134 |
if nic_type is None: |
1135 |
vif_type_str = ""
|
1136 |
if hvp[constants.HV_VIF_TYPE]:
|
1137 |
vif_type_str = ", type=%s" % hvp[constants.HV_VIF_TYPE]
|
1138 |
# ensure old instances don't change
|
1139 |
nic_type_str = vif_type_str |
1140 |
elif nic_type == constants.HT_NIC_PARAVIRTUAL:
|
1141 |
nic_type_str = ", type=paravirtualized"
|
1142 |
else:
|
1143 |
# parameter 'model' is only valid with type 'ioemu'
|
1144 |
nic_type_str = ", model=%s, type=%s" % \
|
1145 |
(nic_type, constants.HT_HVM_VIF_IOEMU) |
1146 |
for idx, nic in enumerate(instance.nics): |
1147 |
nic_str = "mac=%s%s" % (nic.mac, nic_type_str)
|
1148 |
ip = getattr(nic, "ip", None) |
1149 |
if ip is not None: |
1150 |
nic_str += ", ip=%s" % ip
|
1151 |
if nic.nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
|
1152 |
nic_str += ", bridge=%s" % nic.nicparams[constants.NIC_LINK]
|
1153 |
if hvp[constants.HV_VIF_SCRIPT]:
|
1154 |
nic_str += ", script=%s" % hvp[constants.HV_VIF_SCRIPT]
|
1155 |
vif_data.append("'%s'" % nic_str)
|
1156 |
self._WriteNICInfoFile(instance, idx, nic)
|
1157 |
|
1158 |
config.write("vif = [%s]\n" % ",".join(vif_data)) |
1159 |
|
1160 |
disk_data = \ |
1161 |
_GetConfigFileDiskData(block_devices, hvp[constants.HV_BLOCKDEV_PREFIX]) |
1162 |
|
1163 |
iso_path = hvp[constants.HV_CDROM_IMAGE_PATH] |
1164 |
if iso_path:
|
1165 |
iso = "'file:%s,hdc:cdrom,r'" % iso_path
|
1166 |
disk_data.append(iso) |
1167 |
|
1168 |
config.write("disk = [%s]\n" % (",".join(disk_data))) |
1169 |
# Add PCI passthrough
|
1170 |
pci_pass_arr = [] |
1171 |
pci_pass = hvp[constants.HV_PASSTHROUGH] |
1172 |
if pci_pass:
|
1173 |
pci_pass_arr = pci_pass.split(";")
|
1174 |
config.write("pci = %s\n" % pci_pass_arr)
|
1175 |
config.write("on_poweroff = 'destroy'\n")
|
1176 |
if hvp[constants.HV_REBOOT_BEHAVIOR] == constants.INSTANCE_REBOOT_ALLOWED:
|
1177 |
config.write("on_reboot = 'restart'\n")
|
1178 |
else:
|
1179 |
config.write("on_reboot = 'destroy'\n")
|
1180 |
config.write("on_crash = 'restart'\n")
|
1181 |
|
1182 |
return config.getvalue()
|