debuggers.hg

view tools/python/xen/xend/XendDomainInfo.py @ 16630:ef83b50fc4a4

vt-d: Test device assignability in xend, but defer actual assignment to qemu-dm.
Signed-off-by: Weidong Han <weidong.han@intel.com>
author Keir Fraser <keir.fraser@citrix.com>
date Wed Dec 12 10:29:35 2007 +0000 (2007-12-12)
parents 12cf63d3e4a2
children 9b37cabe0485
line source
1 #===========================================================================
2 # This library is free software; you can redistribute it and/or
3 # modify it under the terms of version 2.1 of the GNU Lesser General Public
4 # License as published by the Free Software Foundation.
5 #
6 # This library is distributed in the hope that it will be useful,
7 # but WITHOUT ANY WARRANTY; without even the implied warranty of
8 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
9 # Lesser General Public License for more details.
10 #
11 # You should have received a copy of the GNU Lesser General Public
12 # License along with this library; if not, write to the Free Software
13 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
14 #============================================================================
15 # Copyright (C) 2004, 2005 Mike Wray <mike.wray@hp.com>
16 # Copyright (C) 2005-2007 XenSource Ltd
17 #============================================================================
19 """Representation of a single domain.
20 Includes support for domain construction, using
21 open-ended configurations.
23 Author: Mike Wray <mike.wray@hp.com>
25 """
27 import logging
28 import time
29 import threading
30 import re
31 import copy
32 import os
33 import traceback
34 from types import StringTypes
36 import xen.lowlevel.xc
37 from xen.util import asserts
38 from xen.util.blkif import blkdev_uname_to_file, blkdev_uname_to_taptype
39 import xen.util.xsm.xsm as security
41 from xen.xend import balloon, sxp, uuid, image, arch, osdep
42 from xen.xend import XendOptions, XendNode, XendConfig
44 from xen.xend.XendConfig import scrub_password
45 from xen.xend.XendBootloader import bootloader, bootloader_tidy
46 from xen.xend.XendError import XendError, VmError
47 from xen.xend.XendDevices import XendDevices
48 from xen.xend.XendTask import XendTask
49 from xen.xend.xenstore.xstransact import xstransact, complete
50 from xen.xend.xenstore.xsutil import GetDomainPath, IntroduceDomain, ResumeDomain
51 from xen.xend.xenstore.xswatch import xswatch
52 from xen.xend.XendConstants import *
53 from xen.xend.XendAPIConstants import *
55 from xen.xend.XendVMMetrics import XendVMMetrics
57 MIGRATE_TIMEOUT = 30.0
58 BOOTLOADER_LOOPBACK_DEVICE = '/dev/xvdp'
60 xc = xen.lowlevel.xc.xc()
61 xoptions = XendOptions.instance()
63 log = logging.getLogger("xend.XendDomainInfo")
64 #log.setLevel(logging.TRACE)
67 def create(config):
68 """Creates and start a VM using the supplied configuration.
70 @param config: A configuration object involving lists of tuples.
71 @type config: list of lists, eg ['vm', ['image', 'xen.gz']]
73 @rtype: XendDomainInfo
74 @return: An up and running XendDomainInfo instance
75 @raise VmError: Invalid configuration or failure to start.
76 """
77 from xen.xend import XendDomain
78 domconfig = XendConfig.XendConfig(sxp_obj = config)
79 othervm = XendDomain.instance().domain_lookup_nr(domconfig["name_label"])
80 if othervm is None or othervm.domid is None:
81 othervm = XendDomain.instance().domain_lookup_nr(domconfig["uuid"])
82 if othervm is not None and othervm.domid is not None:
83 raise VmError("Domain '%s' already exists with ID '%d'" % (domconfig["name_label"], othervm.domid))
84 log.debug("XendDomainInfo.create(%s)", scrub_password(config))
85 vm = XendDomainInfo(domconfig)
86 try:
87 vm.start()
88 except:
89 log.exception('Domain construction failed')
90 vm.destroy()
91 raise
93 return vm
95 def create_from_dict(config_dict):
96 """Creates and start a VM using the supplied configuration.
98 @param config_dict: An configuration dictionary.
100 @rtype: XendDomainInfo
101 @return: An up and running XendDomainInfo instance
102 @raise VmError: Invalid configuration or failure to start.
103 """
105 log.debug("XendDomainInfo.create_from_dict(%s)",
106 scrub_password(config_dict))
107 vm = XendDomainInfo(XendConfig.XendConfig(xapi = config_dict))
108 try:
109 vm.start()
110 except:
111 log.exception('Domain construction failed')
112 vm.destroy()
113 raise
114 return vm
116 def recreate(info, priv):
117 """Create the VM object for an existing domain. The domain must not
118 be dying, as the paths in the store should already have been removed,
119 and asking us to recreate them causes problems.
121 @param xeninfo: Parsed configuration
122 @type xeninfo: Dictionary
123 @param priv: Is a privileged domain (Dom 0)
124 @type priv: bool
126 @rtype: XendDomainInfo
127 @return: A up and running XendDomainInfo instance
128 @raise VmError: Invalid configuration.
129 @raise XendError: Errors with configuration.
130 """
132 log.debug("XendDomainInfo.recreate(%s)", scrub_password(info))
134 assert not info['dying']
136 xeninfo = XendConfig.XendConfig(dominfo = info)
137 xeninfo['is_control_domain'] = priv
138 xeninfo['is_a_template'] = False
139 domid = xeninfo['domid']
140 uuid1 = uuid.fromString(xeninfo['uuid'])
141 needs_reinitialising = False
143 dompath = GetDomainPath(domid)
144 if not dompath:
145 raise XendError('No domain path in store for existing '
146 'domain %d' % domid)
148 log.info("Recreating domain %d, UUID %s. at %s" %
149 (domid, xeninfo['uuid'], dompath))
151 # need to verify the path and uuid if not Domain-0
152 # if the required uuid and vm aren't set, then that means
153 # we need to recreate the dom with our own values
154 #
155 # NOTE: this is probably not desirable, really we should just
156 # abort or ignore, but there may be cases where xenstore's
157 # entry disappears (eg. xenstore-rm /)
158 #
159 try:
160 vmpath = xstransact.Read(dompath, "vm")
161 if not vmpath:
162 if not priv:
163 log.warn('/local/domain/%d/vm is missing. recreate is '
164 'confused, trying our best to recover' % domid)
165 needs_reinitialising = True
166 raise XendError('reinit')
168 uuid2_str = xstransact.Read(vmpath, "uuid")
169 if not uuid2_str:
170 log.warn('%s/uuid/ is missing. recreate is confused, '
171 'trying our best to recover' % vmpath)
172 needs_reinitialising = True
173 raise XendError('reinit')
175 uuid2 = uuid.fromString(uuid2_str)
176 if uuid1 != uuid2:
177 log.warn('UUID in /vm does not match the UUID in /dom/%d.'
178 'Trying out best to recover' % domid)
179 needs_reinitialising = True
180 except XendError:
181 pass # our best shot at 'goto' in python :)
183 vm = XendDomainInfo(xeninfo, domid, dompath, augment = True, priv = priv,
184 vmpath = vmpath)
186 if needs_reinitialising:
187 vm._recreateDom()
188 vm._removeVm()
189 vm._storeVmDetails()
190 vm._storeDomDetails()
192 vm.image = image.create(vm, vm.info)
193 vm.image.recreate()
195 vm._registerWatches()
196 vm.refreshShutdown(xeninfo)
198 # register the domain in the list
199 from xen.xend import XendDomain
200 XendDomain.instance().add_domain(vm)
202 return vm
205 def restore(config):
206 """Create a domain and a VM object to do a restore.
208 @param config: Domain SXP configuration
209 @type config: list of lists. (see C{create})
211 @rtype: XendDomainInfo
212 @return: A up and running XendDomainInfo instance
213 @raise VmError: Invalid configuration or failure to start.
214 @raise XendError: Errors with configuration.
215 """
217 log.debug("XendDomainInfo.restore(%s)", scrub_password(config))
218 vm = XendDomainInfo(XendConfig.XendConfig(sxp_obj = config),
219 resume = True)
220 try:
221 vm.resume()
222 return vm
223 except:
224 vm.destroy()
225 raise
227 def createDormant(domconfig):
228 """Create a dormant/inactive XenDomainInfo without creating VM.
229 This is for creating instances of persistent domains that are not
230 yet start.
232 @param domconfig: Parsed configuration
233 @type domconfig: XendConfig object
235 @rtype: XendDomainInfo
236 @return: A up and running XendDomainInfo instance
237 @raise XendError: Errors with configuration.
238 """
240 log.debug("XendDomainInfo.createDormant(%s)", scrub_password(domconfig))
242 # domid does not make sense for non-running domains.
243 domconfig.pop('domid', None)
244 vm = XendDomainInfo(domconfig)
245 return vm
247 def domain_by_name(name):
248 """Get domain by name
250 @params name: Name of the domain
251 @type name: string
252 @return: XendDomainInfo or None
253 """
254 from xen.xend import XendDomain
255 return XendDomain.instance().domain_lookup_by_name_nr(name)
258 def shutdown_reason(code):
259 """Get a shutdown reason from a code.
261 @param code: shutdown code
262 @type code: int
263 @return: shutdown reason
264 @rtype: string
265 """
266 return DOMAIN_SHUTDOWN_REASONS.get(code, "?")
268 def dom_get(dom):
269 """Get info from xen for an existing domain.
271 @param dom: domain id
272 @type dom: int
273 @return: info or None
274 @rtype: dictionary
275 """
276 try:
277 domlist = xc.domain_getinfo(dom, 1)
278 if domlist and dom == domlist[0]['domid']:
279 return domlist[0]
280 except Exception, err:
281 # ignore missing domain
282 log.trace("domain_getinfo(%d) failed, ignoring: %s", dom, str(err))
283 return None
286 class XendDomainInfo:
287 """An object represents a domain.
289 @TODO: try to unify dom and domid, they mean the same thing, but
290 xc refers to it as dom, and everywhere else, including
291 xenstore it is domid. The best way is to change xc's
292 python interface.
294 @ivar info: Parsed configuration
295 @type info: dictionary
296 @ivar domid: Domain ID (if VM has started)
297 @type domid: int or None
298 @ivar vmpath: XenStore path to this VM.
299 @type vmpath: string
300 @ivar dompath: XenStore path to this Domain.
301 @type dompath: string
302 @ivar image: Reference to the VM Image.
303 @type image: xen.xend.image.ImageHandler
304 @ivar store_port: event channel to xenstored
305 @type store_port: int
306 @ivar console_port: event channel to xenconsoled
307 @type console_port: int
308 @ivar store_mfn: xenstored mfn
309 @type store_mfn: int
310 @ivar console_mfn: xenconsoled mfn
311 @type console_mfn: int
312 @ivar notes: OS image notes
313 @type notes: dictionary
314 @ivar vmWatch: reference to a watch on the xenstored vmpath
315 @type vmWatch: xen.xend.xenstore.xswatch
316 @ivar shutdownWatch: reference to watch on the xenstored domain shutdown
317 @type shutdownWatch: xen.xend.xenstore.xswatch
318 @ivar shutdownStartTime: UNIX Time when domain started shutting down.
319 @type shutdownStartTime: float or None
320 # @ivar state: Domain state
321 # @type state: enum(DOM_STATE_HALTED, DOM_STATE_RUNNING, ...)
322 @ivar state_updated: lock for self.state
323 @type state_updated: threading.Condition
324 @ivar refresh_shutdown_lock: lock for polling shutdown state
325 @type refresh_shutdown_lock: threading.Condition
326 @ivar _deviceControllers: device controller cache for this domain
327 @type _deviceControllers: dict 'string' to DevControllers
328 """
330 def __init__(self, info, domid = None, dompath = None, augment = False,
331 priv = False, resume = False, vmpath = None):
332 """Constructor for a domain
334 @param info: parsed configuration
335 @type info: dictionary
336 @keyword domid: Set initial domain id (if any)
337 @type domid: int
338 @keyword dompath: Set initial dompath (if any)
339 @type dompath: string
340 @keyword augment: Augment given info with xenstored VM info
341 @type augment: bool
342 @keyword priv: Is a privileged domain (Dom 0)
343 @type priv: bool
344 @keyword resume: Is this domain being resumed?
345 @type resume: bool
346 """
348 self.info = info
349 if domid == None:
350 self.domid = self.info.get('domid')
351 else:
352 self.domid = domid
354 #REMOVE: uuid is now generated in XendConfig
355 #if not self._infoIsSet('uuid'):
356 # self.info['uuid'] = uuid.toString(uuid.create())
358 # Find a unique /vm/<uuid>/<integer> path if not specified.
359 # This avoids conflict between pre-/post-migrate domains when doing
360 # localhost relocation.
361 self.vmpath = vmpath
362 i = 0
363 while self.vmpath == None:
364 self.vmpath = XS_VMROOT + self.info['uuid']
365 if i != 0:
366 self.vmpath = self.vmpath + '-' + str(i)
367 try:
368 if self._readVm("uuid"):
369 self.vmpath = None
370 i = i + 1
371 except:
372 pass
374 self.dompath = dompath
376 self.image = None
377 self.store_port = None
378 self.store_mfn = None
379 self.console_port = None
380 self.console_mfn = None
382 self.native_protocol = None
384 self.vmWatch = None
385 self.shutdownWatch = None
386 self.shutdownStartTime = None
387 self._resume = resume
389 self.state_updated = threading.Condition()
390 self.refresh_shutdown_lock = threading.Condition()
391 self._stateSet(DOM_STATE_HALTED)
393 self._deviceControllers = {}
395 for state in DOM_STATES_OLD:
396 self.info[state] = 0
398 if augment:
399 self._augmentInfo(priv)
401 self._checkName(self.info['name_label'])
403 self.metrics = XendVMMetrics(uuid.createString(), self)
406 #
407 # Public functions available through XMLRPC
408 #
411 def start(self, is_managed = False):
412 """Attempts to start the VM by do the appropriate
413 initialisation if it not started.
414 """
415 from xen.xend import XendDomain
417 if self._stateGet() in (XEN_API_VM_POWER_STATE_HALTED, XEN_API_VM_POWER_STATE_SUSPENDED):
418 try:
419 XendTask.log_progress(0, 30, self._constructDomain)
420 XendTask.log_progress(31, 60, self._initDomain)
422 XendTask.log_progress(61, 70, self._storeVmDetails)
423 XendTask.log_progress(71, 80, self._storeDomDetails)
424 XendTask.log_progress(81, 90, self._registerWatches)
425 XendTask.log_progress(91, 100, self.refreshShutdown)
427 xendomains = XendDomain.instance()
428 xennode = XendNode.instance()
430 # save running configuration if XendDomains believe domain is
431 # persistent
432 if is_managed:
433 xendomains.managed_config_save(self)
435 if xennode.xenschedinfo() == 'credit':
436 xendomains.domain_sched_credit_set(self.getDomid(),
437 self.getWeight(),
438 self.getCap())
439 except:
440 log.exception('VM start failed')
441 self.destroy()
442 raise
443 else:
444 raise XendError('VM already running')
446 def resume(self):
447 """Resumes a domain that has come back from suspension."""
448 state = self._stateGet()
449 if state in (DOM_STATE_SUSPENDED, DOM_STATE_HALTED):
450 try:
451 self._constructDomain()
452 self._storeVmDetails()
453 self._createDevices()
454 self._createChannels()
455 self._storeDomDetails()
456 self._endRestore()
457 except:
458 log.exception('VM resume failed')
459 self.destroy()
460 raise
461 else:
462 raise XendError('VM is not susupened; it is %s'
463 % XEN_API_VM_POWER_STATE[state])
465 def shutdown(self, reason):
466 """Shutdown a domain by signalling this via xenstored."""
467 log.debug('XendDomainInfo.shutdown(%s)', reason)
468 if self._stateGet() in (DOM_STATE_SHUTDOWN, DOM_STATE_HALTED,):
469 raise XendError('Domain cannot be shutdown')
471 if self.domid == 0:
472 raise XendError('Domain 0 cannot be shutdown')
474 if reason not in DOMAIN_SHUTDOWN_REASONS.values():
475 raise XendError('Invalid reason: %s' % reason)
476 self._removeVm('xend/previous_restart_time')
477 self.storeDom("control/shutdown", reason)
479 # HVM domain shuts itself down only if it has PV drivers
480 if self.info.is_hvm():
481 hvm_pvdrv = xc.hvm_get_param(self.domid, HVM_PARAM_CALLBACK_IRQ)
482 if not hvm_pvdrv:
483 code = REVERSE_DOMAIN_SHUTDOWN_REASONS[reason]
484 xc.domain_destroy_hook(self.domid)
485 log.info("HVM save:remote shutdown dom %d!", self.domid)
486 xc.domain_shutdown(self.domid, code)
488 def pause(self):
489 """Pause domain
491 @raise XendError: Failed pausing a domain
492 """
493 try:
494 xc.domain_pause(self.domid)
495 self._stateSet(DOM_STATE_PAUSED)
496 except Exception, ex:
497 log.exception(ex)
498 raise XendError("Domain unable to be paused: %s" % str(ex))
500 def unpause(self):
501 """Unpause domain
503 @raise XendError: Failed unpausing a domain
504 """
505 try:
506 xc.domain_unpause(self.domid)
507 self._stateSet(DOM_STATE_RUNNING)
508 except Exception, ex:
509 log.exception(ex)
510 raise XendError("Domain unable to be unpaused: %s" % str(ex))
512 def send_sysrq(self, key):
513 """ Send a Sysrq equivalent key via xenstored."""
514 if self._stateGet() not in (DOM_STATE_RUNNING, DOM_STATE_PAUSED):
515 raise XendError("Domain '%s' is not started" % self.info['name_label'])
517 asserts.isCharConvertible(key)
518 self.storeDom("control/sysrq", '%c' % key)
520 def device_create(self, dev_config):
521 """Create a new device.
523 @param dev_config: device configuration
524 @type dev_config: SXP object (parsed config)
525 """
526 log.debug("XendDomainInfo.device_create: %s" % scrub_password(dev_config))
527 dev_type = sxp.name(dev_config)
528 dev_uuid = self.info.device_add(dev_type, cfg_sxp = dev_config)
529 dev_config_dict = self.info['devices'][dev_uuid][1]
530 log.debug("XendDomainInfo.device_create: %s" % scrub_password(dev_config_dict))
532 if self.domid is not None:
533 try:
534 dev_config_dict['devid'] = devid = \
535 self._createDevice(dev_type, dev_config_dict)
536 self._waitForDevice(dev_type, devid)
537 except VmError, ex:
538 raise ex
539 else:
540 devid = None
542 xen.xend.XendDomain.instance().managed_config_save(self)
543 return self.getDeviceController(dev_type).sxpr(devid)
545 def device_configure(self, dev_sxp, devid = None):
546 """Configure an existing device.
548 @param dev_config: device configuration
549 @type dev_config: SXP object (parsed config)
550 @param devid: device id
551 @type devid: int
552 @return: Returns True if successfully updated device
553 @rtype: boolean
554 """
556 # convert device sxp to a dict
557 dev_class = sxp.name(dev_sxp)
558 dev_config = {}
559 for opt_val in dev_sxp[1:]:
560 try:
561 dev_config[opt_val[0]] = opt_val[1]
562 except IndexError:
563 pass
565 # use DevController.reconfigureDevice to change device config
566 dev_control = self.getDeviceController(dev_class)
567 dev_uuid = dev_control.reconfigureDevice(devid, dev_config)
569 # update XendConfig with new device info
570 if dev_uuid:
571 self.info.device_update(dev_uuid, dev_sxp)
573 return True
575 def waitForDevices(self):
576 """Wait for this domain's configured devices to connect.
578 @raise VmError: if any device fails to initialise.
579 """
580 for devclass in XendDevices.valid_devices():
581 self.getDeviceController(devclass).waitForDevices()
583 def destroyDevice(self, deviceClass, devid, force = False, rm_cfg = False):
584 log.debug("XendDomainInfo.destroyDevice: deviceClass = %s, device = %s",
585 deviceClass, devid)
587 if rm_cfg:
588 # Convert devid to device number. A device number is
589 # needed to remove its configuration.
590 dev = self.getDeviceController(deviceClass).convertToDeviceNumber(devid)
592 # Save current sxprs. A device number and a backend
593 # path are needed to remove its configuration but sxprs
594 # do not have those after calling destroyDevice.
595 sxprs = self.getDeviceSxprs(deviceClass)
597 rc = None
598 if self.domid is not None:
599 rc = self.getDeviceController(deviceClass).destroyDevice(devid, force)
600 if not force and rm_cfg:
601 # The backend path, other than the device itself,
602 # has to be passed because its accompanied frontend
603 # path may be void until its removal is actually
604 # issued. It is probable because destroyDevice is
605 # issued first.
606 for dev_num, dev_info in sxprs:
607 dev_num = int(dev_num)
608 if dev_num == dev:
609 for x in dev_info:
610 if x[0] == 'backend':
611 backend = x[1]
612 break
613 break
614 self._waitForDevice_destroy(deviceClass, devid, backend)
616 if rm_cfg:
617 if deviceClass == 'vif':
618 if self.domid is not None:
619 for dev_num, dev_info in sxprs:
620 dev_num = int(dev_num)
621 if dev_num == dev:
622 for x in dev_info:
623 if x[0] == 'mac':
624 mac = x[1]
625 break
626 break
627 dev_info = self._getDeviceInfo_vif(mac)
628 else:
629 _, dev_info = sxprs[dev]
630 else: # 'vbd' or 'tap'
631 dev_info = self._getDeviceInfo_vbd(dev)
632 # To remove the UUID of the device from refs,
633 # deviceClass must be always 'vbd'.
634 deviceClass = 'vbd'
635 if dev_info is None:
636 raise XendError("Device %s is not defined" % devid)
638 dev_uuid = sxp.child_value(dev_info, 'uuid')
639 del self.info['devices'][dev_uuid]
640 self.info['%s_refs' % deviceClass].remove(dev_uuid)
641 xen.xend.XendDomain.instance().managed_config_save(self)
643 return rc
645 def getDeviceSxprs(self, deviceClass):
646 if self._stateGet() in (DOM_STATE_RUNNING, DOM_STATE_PAUSED):
647 return self.getDeviceController(deviceClass).sxprs()
648 else:
649 sxprs = []
650 dev_num = 0
651 for dev_type, dev_info in self.info.all_devices_sxpr():
652 if dev_type == deviceClass:
653 sxprs.append([dev_num, dev_info])
654 dev_num += 1
655 return sxprs
657 def getBlockDeviceClass(self, devid):
658 # To get a device number from the devid,
659 # we temporarily use the device controller of VBD.
660 dev = self.getDeviceController('vbd').convertToDeviceNumber(devid)
661 dev_info = self._getDeviceInfo_vbd(dev)
662 if dev_info:
663 return dev_info[0]
665 def _getDeviceInfo_vif(self, mac):
666 for dev_type, dev_info in self.info.all_devices_sxpr():
667 if dev_type != 'vif':
668 continue
669 if mac == sxp.child_value(dev_info, 'mac'):
670 return dev_info
672 def _getDeviceInfo_vbd(self, devid):
673 for dev_type, dev_info in self.info.all_devices_sxpr():
674 if dev_type != 'vbd' and dev_type != 'tap':
675 continue
676 dev = sxp.child_value(dev_info, 'dev')
677 dev = dev.split(':')[0]
678 dev = self.getDeviceController(dev_type).convertToDeviceNumber(dev)
679 if devid == dev:
680 return dev_info
683 def setMemoryTarget(self, target):
684 """Set the memory target of this domain.
685 @param target: In MiB.
686 """
687 log.debug("Setting memory target of domain %s (%s) to %d MiB.",
688 self.info['name_label'], str(self.domid), target)
690 MiB = 1024 * 1024
691 self._safe_set_memory('memory_dynamic_min', target * MiB)
692 self._safe_set_memory('memory_dynamic_max', target * MiB)
694 if self.domid >= 0:
695 self.storeVm("memory", target)
696 self.storeDom("memory/target", target << 10)
697 xen.xend.XendDomain.instance().managed_config_save(self)
699 def setMemoryMaximum(self, limit):
700 """Set the maximum memory limit of this domain
701 @param limit: In MiB.
702 """
703 log.debug("Setting memory maximum of domain %s (%s) to %d MiB.",
704 self.info['name_label'], str(self.domid), limit)
706 if limit <= 0:
707 raise XendError('Invalid memory size')
709 MiB = 1024 * 1024
710 self._safe_set_memory('memory_static_max', limit * MiB)
712 if self.domid >= 0:
713 maxmem = int(limit) * 1024
714 try:
715 return xc.domain_setmaxmem(self.domid, maxmem)
716 except Exception, ex:
717 raise XendError(str(ex))
718 xen.xend.XendDomain.instance().managed_config_save(self)
721 def getVCPUInfo(self):
722 try:
723 # We include the domain name and ID, to help xm.
724 sxpr = ['domain',
725 ['domid', self.domid],
726 ['name', self.info['name_label']],
727 ['vcpu_count', self.info['VCPUs_max']]]
729 for i in range(0, self.info['VCPUs_max']):
730 if self.domid is not None:
731 info = xc.vcpu_getinfo(self.domid, i)
733 sxpr.append(['vcpu',
734 ['number', i],
735 ['online', info['online']],
736 ['blocked', info['blocked']],
737 ['running', info['running']],
738 ['cpu_time', info['cpu_time'] / 1e9],
739 ['cpu', info['cpu']],
740 ['cpumap', info['cpumap']]])
741 else:
742 sxpr.append(['vcpu',
743 ['number', i],
744 ['online', 0],
745 ['blocked', 0],
746 ['running', 0],
747 ['cpu_time', 0.0],
748 ['cpu', -1],
749 ['cpumap', self.info['cpus'] and \
750 self.info['cpus'] or range(64)]])
752 return sxpr
754 except RuntimeError, exn:
755 raise XendError(str(exn))
758 def getDomInfo(self):
759 return dom_get(self.domid)
761 #
762 # internal functions ... TODO: re-categorised
763 #
765 def _augmentInfo(self, priv):
766 """Augment self.info, as given to us through L{recreate}, with
767 values taken from the store. This recovers those values known
768 to xend but not to the hypervisor.
769 """
770 augment_entries = XendConfig.LEGACY_XENSTORE_VM_PARAMS[:]
771 if priv:
772 augment_entries.remove('memory')
773 augment_entries.remove('maxmem')
774 augment_entries.remove('vcpus')
775 augment_entries.remove('vcpu_avail')
777 vm_config = self._readVMDetails([(k, XendConfig.LEGACY_CFG_TYPES[k])
778 for k in augment_entries])
780 # make returned lists into a dictionary
781 vm_config = dict(zip(augment_entries, vm_config))
783 for arg in augment_entries:
784 val = vm_config[arg]
785 if val != None:
786 if arg in XendConfig.LEGACY_CFG_TO_XENAPI_CFG:
787 xapiarg = XendConfig.LEGACY_CFG_TO_XENAPI_CFG[arg]
788 self.info[xapiarg] = val
789 elif arg == "memory":
790 self.info["static_memory_min"] = val
791 elif arg == "maxmem":
792 self.info["static_memory_max"] = val
793 else:
794 self.info[arg] = val
796 # For dom0, we ignore any stored value for the vcpus fields, and
797 # read the current value from Xen instead. This allows boot-time
798 # settings to take precedence over any entries in the store.
799 if priv:
800 xeninfo = dom_get(self.domid)
801 self.info['VCPUs_max'] = xeninfo['online_vcpus']
802 self.info['vcpu_avail'] = (1 << xeninfo['online_vcpus']) - 1
804 # read image value
805 image_sxp = self._readVm('image')
806 if image_sxp:
807 self.info.update_with_image_sxp(sxp.from_string(image_sxp))
809 # read devices
810 devices = []
811 for devclass in XendDevices.valid_devices():
812 devconfig = self.getDeviceController(devclass).configurations()
813 if devconfig:
814 devices.extend(devconfig)
816 if not self.info['devices'] and devices is not None:
817 for device in devices:
818 self.info.device_add(device[0], cfg_sxp = device)
820 self._update_consoles()
822 def _update_consoles(self, transaction = None):
823 if self.domid == None or self.domid == 0:
824 return
826 # Update VT100 port if it exists
827 if transaction is None:
828 self.console_port = self.readDom('console/port')
829 else:
830 self.console_port = self.readDomTxn(transaction, 'console/port')
831 if self.console_port is not None:
832 serial_consoles = self.info.console_get_all('vt100')
833 if not serial_consoles:
834 cfg = self.info.console_add('vt100', self.console_port)
835 self._createDevice('console', cfg)
836 else:
837 console_uuid = serial_consoles[0].get('uuid')
838 self.info.console_update(console_uuid, 'location',
839 self.console_port)
842 # Update VNC port if it exists and write to xenstore
843 if transaction is None:
844 vnc_port = self.readDom('console/vnc-port')
845 else:
846 vnc_port = self.readDomTxn(transaction, 'console/vnc-port')
847 if vnc_port is not None:
848 for dev_uuid, (dev_type, dev_info) in self.info['devices'].items():
849 if dev_type == 'vfb':
850 old_location = dev_info.get('location')
851 listen_host = dev_info.get('vnclisten', 'localhost')
852 new_location = '%s:%s' % (listen_host, str(vnc_port))
853 if old_location == new_location:
854 break
856 dev_info['location'] = new_location
857 self.info.device_update(dev_uuid, cfg_xenapi = dev_info)
858 vfb_ctrl = self.getDeviceController('vfb')
859 vfb_ctrl.reconfigureDevice(0, dev_info)
860 break
862 #
863 # Function to update xenstore /vm/*
864 #
866 def _readVm(self, *args):
867 return xstransact.Read(self.vmpath, *args)
869 def _writeVm(self, *args):
870 return xstransact.Write(self.vmpath, *args)
872 def _removeVm(self, *args):
873 return xstransact.Remove(self.vmpath, *args)
875 def _gatherVm(self, *args):
876 return xstransact.Gather(self.vmpath, *args)
878 def storeVm(self, *args):
879 return xstransact.Store(self.vmpath, *args)
882 def _readVmTxn(self, transaction, *args):
883 paths = map(lambda x: self.vmpath + "/" + x, args)
884 return transaction.read(*paths)
886 def _writeVmTxn(self, transaction, *args):
887 paths = map(lambda x: self.vmpath + "/" + x, args)
888 return transaction.write(*paths)
890 def _removeVmTxn(self, transaction, *args):
891 paths = map(lambda x: self.vmpath + "/" + x, args)
892 return transaction.remove(*paths)
894 def _gatherVmTxn(self, transaction, *args):
895 paths = map(lambda x: self.vmpath + "/" + x, args)
896 return transaction.gather(paths)
898 def storeVmTxn(self, transaction, *args):
899 paths = map(lambda x: self.vmpath + "/" + x, args)
900 return transaction.store(*paths)
902 #
903 # Function to update xenstore /dom/*
904 #
906 def readDom(self, *args):
907 return xstransact.Read(self.dompath, *args)
909 def gatherDom(self, *args):
910 return xstransact.Gather(self.dompath, *args)
912 def _writeDom(self, *args):
913 return xstransact.Write(self.dompath, *args)
915 def _removeDom(self, *args):
916 return xstransact.Remove(self.dompath, *args)
918 def storeDom(self, *args):
919 return xstransact.Store(self.dompath, *args)
922 def readDomTxn(self, transaction, *args):
923 paths = map(lambda x: self.dompath + "/" + x, args)
924 return transaction.read(*paths)
926 def gatherDomTxn(self, transaction, *args):
927 paths = map(lambda x: self.dompath + "/" + x, args)
928 return transaction.gather(*paths)
930 def _writeDomTxn(self, transaction, *args):
931 paths = map(lambda x: self.dompath + "/" + x, args)
932 return transaction.write(*paths)
934 def _removeDomTxn(self, transaction, *args):
935 paths = map(lambda x: self.dompath + "/" + x, args)
936 return transaction.remove(*paths)
938 def storeDomTxn(self, transaction, *args):
939 paths = map(lambda x: self.dompath + "/" + x, args)
940 return transaction.store(*paths)
943 def _recreateDom(self):
944 complete(self.dompath, lambda t: self._recreateDomFunc(t))
946 def _recreateDomFunc(self, t):
947 t.remove()
948 t.mkdir()
949 t.set_permissions({'dom' : self.domid})
950 t.write('vm', self.vmpath)
952 def _storeDomDetails(self):
953 to_store = {
954 'domid': str(self.domid),
955 'vm': self.vmpath,
956 'name': self.info['name_label'],
957 'console/limit': str(xoptions.get_console_limit() * 1024),
958 'memory/target': str(self.info['memory_dynamic_max'] / 1024),
959 }
961 def f(n, v):
962 if v is not None:
963 if type(v) == bool:
964 to_store[n] = v and "1" or "0"
965 else:
966 to_store[n] = str(v)
968 # Figure out if we need to tell xenconsoled to ignore this guest's
969 # console - device model will handle console if it is running
970 constype = "ioemu"
971 if 'device_model' not in self.info['platform']:
972 constype = "xenconsoled"
974 f('console/port', self.console_port)
975 f('console/ring-ref', self.console_mfn)
976 f('console/type', constype)
977 f('store/port', self.store_port)
978 f('store/ring-ref', self.store_mfn)
980 if arch.type == "x86":
981 f('control/platform-feature-multiprocessor-suspend', True)
983 # elfnotes
984 for n, v in self.info.get_notes().iteritems():
985 n = n.lower().replace('_', '-')
986 if n == 'features':
987 for v in v.split('|'):
988 v = v.replace('_', '-')
989 if v.startswith('!'):
990 f('image/%s/%s' % (n, v[1:]), False)
991 else:
992 f('image/%s/%s' % (n, v), True)
993 else:
994 f('image/%s' % n, v)
996 if self.info.has_key('security_label'):
997 f('security_label', self.info['security_label'])
999 to_store.update(self._vcpuDomDetails())
1001 log.debug("Storing domain details: %s", scrub_password(to_store))
1003 self._writeDom(to_store)
1005 def _vcpuDomDetails(self):
1006 def availability(n):
1007 if self.info['vcpu_avail'] & (1 << n):
1008 return 'online'
1009 else:
1010 return 'offline'
1012 result = {}
1013 for v in range(0, self.info['VCPUs_max']):
1014 result["cpu/%d/availability" % v] = availability(v)
1015 return result
1018 # xenstore watches
1021 def _registerWatches(self):
1022 """Register a watch on this VM's entries in the store, and the
1023 domain's control/shutdown node, so that when they are changed
1024 externally, we keep up to date. This should only be called by {@link
1025 #create}, {@link #recreate}, or {@link #restore}, once the domain's
1026 details have been written, but before the new instance is returned."""
1027 self.vmWatch = xswatch(self.vmpath, self._storeChanged)
1028 self.shutdownWatch = xswatch(self.dompath + '/control/shutdown',
1029 self._handleShutdownWatch)
1031 def _storeChanged(self, _):
1032 log.trace("XendDomainInfo.storeChanged");
1034 changed = False
1036 # Check whether values in the configuration have
1037 # changed in Xenstore.
1039 cfg_vm = ['name', 'on_poweroff', 'on_reboot', 'on_crash',
1040 'rtc/timeoffset']
1042 vm_details = self._readVMDetails([(k,XendConfig.LEGACY_CFG_TYPES[k])
1043 for k in cfg_vm])
1045 # convert two lists into a python dictionary
1046 vm_details = dict(zip(cfg_vm, vm_details))
1048 if vm_details['rtc/timeoffset'] == None:
1049 vm_details['rtc/timeoffset'] = "0"
1051 for arg, val in vm_details.items():
1052 if arg in XendConfig.LEGACY_CFG_TO_XENAPI_CFG:
1053 xapiarg = XendConfig.LEGACY_CFG_TO_XENAPI_CFG[arg]
1054 if val != None and val != self.info[xapiarg]:
1055 self.info[xapiarg] = val
1056 changed = True
1057 elif arg == "memory":
1058 if val != None and val != self.info["static_memory_min"]:
1059 self.info["static_memory_min"] = val
1060 changed = True
1061 elif arg == "maxmem":
1062 if val != None and val != self.info["static_memory_max"]:
1063 self.info["static_memory_max"] = val
1064 changed = True
1066 # Check whether image definition has been updated
1067 image_sxp = self._readVm('image')
1068 if image_sxp and image_sxp != sxp.to_string(self.info.image_sxpr()):
1069 self.info.update_with_image_sxp(sxp.from_string(image_sxp))
1070 changed = True
1072 # Check if the rtc offset has changes
1073 if vm_details.get("rtc/timeoffset", "0") != self.info["platform"].get("rtc_timeoffset", "0"):
1074 self.info["platform"]["rtc_timeoffset"] = vm_details.get("rtc/timeoffset", 0)
1075 changed = True
1077 if changed:
1078 # Update the domain section of the store, as this contains some
1079 # parameters derived from the VM configuration.
1080 self._storeDomDetails()
1082 return 1
1084 def _handleShutdownWatch(self, _):
1085 log.debug('XendDomainInfo.handleShutdownWatch')
1087 reason = self.readDom('control/shutdown')
1089 if reason and reason != 'suspend':
1090 sst = self.readDom('xend/shutdown_start_time')
1091 now = time.time()
1092 if sst:
1093 self.shutdownStartTime = float(sst)
1094 timeout = float(sst) + SHUTDOWN_TIMEOUT - now
1095 else:
1096 self.shutdownStartTime = now
1097 self.storeDom('xend/shutdown_start_time', now)
1098 timeout = SHUTDOWN_TIMEOUT
1100 log.trace(
1101 "Scheduling refreshShutdown on domain %d in %ds.",
1102 self.domid, timeout)
1103 threading.Timer(timeout, self.refreshShutdown).start()
1105 return True
1109 # Public Attributes for the VM
1113 def getDomid(self):
1114 return self.domid
1116 def setName(self, name):
1117 self._checkName(name)
1118 self.info['name_label'] = name
1119 self.storeVm("name", name)
1121 def getName(self):
1122 return self.info['name_label']
1124 def getDomainPath(self):
1125 return self.dompath
1127 def getShutdownReason(self):
1128 return self.readDom('control/shutdown')
1130 def getStorePort(self):
1131 """For use only by image.py and XendCheckpoint.py."""
1132 return self.store_port
1134 def getConsolePort(self):
1135 """For use only by image.py and XendCheckpoint.py"""
1136 return self.console_port
1138 def getFeatures(self):
1139 """For use only by image.py."""
1140 return self.info['features']
1142 def getVCpuCount(self):
1143 return self.info['VCPUs_max']
1145 def setVCpuCount(self, vcpus):
1146 if vcpus <= 0:
1147 raise XendError('Invalid VCPUs')
1149 self.info['vcpu_avail'] = (1 << vcpus) - 1
1150 if self.domid >= 0:
1151 self.storeVm('vcpu_avail', self.info['vcpu_avail'])
1152 # update dom differently depending on whether we are adjusting
1153 # vcpu number up or down, otherwise _vcpuDomDetails does not
1154 # disable the vcpus
1155 if self.info['VCPUs_max'] > vcpus:
1156 # decreasing
1157 self._writeDom(self._vcpuDomDetails())
1158 self.info['VCPUs_live'] = vcpus
1159 else:
1160 # same or increasing
1161 self.info['VCPUs_live'] = vcpus
1162 self._writeDom(self._vcpuDomDetails())
1163 else:
1164 self.info['VCPUs_max'] = vcpus
1165 xen.xend.XendDomain.instance().managed_config_save(self)
1166 log.info("Set VCPU count on domain %s to %d", self.info['name_label'],
1167 vcpus)
1169 def getMemoryTarget(self):
1170 """Get this domain's target memory size, in KB."""
1171 return self.info['memory_dynamic_max'] / 1024
1173 def getMemoryMaximum(self):
1174 """Get this domain's maximum memory size, in KB."""
1175 # remember, info now stores memory in bytes
1176 return self.info['memory_static_max'] / 1024
1178 def getResume(self):
1179 return str(self._resume)
1181 def getCap(self):
1182 return self.info['vcpus_params']['cap']
1184 def setCap(self, cpu_cap):
1185 self.info['vcpus_params']['cap'] = cpu_cap
1187 def getWeight(self):
1188 return self.info['vcpus_params']['weight']
1190 def setWeight(self, cpu_weight):
1191 self.info['vcpus_params']['weight'] = cpu_weight
1193 def setResume(self, state):
1194 self._resume = state
1196 def getRestartCount(self):
1197 return self._readVm('xend/restart_count')
1199 def refreshShutdown(self, xeninfo = None):
1200 """ Checks the domain for whether a shutdown is required.
1202 Called from XendDomainInfo and also image.py for HVM images.
1203 """
1205 # If set at the end of this method, a restart is required, with the
1206 # given reason. This restart has to be done out of the scope of
1207 # refresh_shutdown_lock.
1208 restart_reason = None
1210 self.refresh_shutdown_lock.acquire()
1211 try:
1212 if xeninfo is None:
1213 xeninfo = dom_get(self.domid)
1214 if xeninfo is None:
1215 # The domain no longer exists. This will occur if we have
1216 # scheduled a timer to check for shutdown timeouts and the
1217 # shutdown succeeded. It will also occur if someone
1218 # destroys a domain beneath us. We clean up the domain,
1219 # just in case, but we can't clean up the VM, because that
1220 # VM may have migrated to a different domain on this
1221 # machine.
1222 self.cleanupDomain()
1223 self._stateSet(DOM_STATE_HALTED)
1224 return
1226 if xeninfo['dying']:
1227 # Dying means that a domain has been destroyed, but has not
1228 # yet been cleaned up by Xen. This state could persist
1229 # indefinitely if, for example, another domain has some of its
1230 # pages mapped. We might like to diagnose this problem in the
1231 # future, but for now all we do is make sure that it's not us
1232 # holding the pages, by calling cleanupDomain. We can't
1233 # clean up the VM, as above.
1234 self.cleanupDomain()
1235 self._stateSet(DOM_STATE_SHUTDOWN)
1236 return
1238 elif xeninfo['crashed']:
1239 if self.readDom('xend/shutdown_completed'):
1240 # We've seen this shutdown already, but we are preserving
1241 # the domain for debugging. Leave it alone.
1242 return
1244 log.warn('Domain has crashed: name=%s id=%d.',
1245 self.info['name_label'], self.domid)
1246 self._writeVm(LAST_SHUTDOWN_REASON, 'crash')
1248 if xoptions.get_enable_dump():
1249 try:
1250 self.dumpCore()
1251 except XendError:
1252 # This error has been logged -- there's nothing more
1253 # we can do in this context.
1254 pass
1256 restart_reason = 'crash'
1257 self._stateSet(DOM_STATE_HALTED)
1259 elif xeninfo['shutdown']:
1260 self._stateSet(DOM_STATE_SHUTDOWN)
1261 if self.readDom('xend/shutdown_completed'):
1262 # We've seen this shutdown already, but we are preserving
1263 # the domain for debugging. Leave it alone.
1264 return
1266 else:
1267 reason = shutdown_reason(xeninfo['shutdown_reason'])
1269 log.info('Domain has shutdown: name=%s id=%d reason=%s.',
1270 self.info['name_label'], self.domid, reason)
1271 self._writeVm(LAST_SHUTDOWN_REASON, reason)
1273 self._clearRestart()
1275 if reason == 'suspend':
1276 self._stateSet(DOM_STATE_SUSPENDED)
1277 # Don't destroy the domain. XendCheckpoint will do
1278 # this once it has finished. However, stop watching
1279 # the VM path now, otherwise we will end up with one
1280 # watch for the old domain, and one for the new.
1281 self._unwatchVm()
1282 elif reason in ('poweroff', 'reboot'):
1283 restart_reason = reason
1284 else:
1285 self.destroy()
1287 elif self.dompath is None:
1288 # We have yet to manage to call introduceDomain on this
1289 # domain. This can happen if a restore is in progress, or has
1290 # failed. Ignore this domain.
1291 pass
1292 else:
1293 # Domain is alive. If we are shutting it down, log a message
1294 # if it seems unresponsive.
1295 if xeninfo['paused']:
1296 self._stateSet(DOM_STATE_PAUSED)
1297 else:
1298 self._stateSet(DOM_STATE_RUNNING)
1300 if self.shutdownStartTime:
1301 timeout = (SHUTDOWN_TIMEOUT - time.time() +
1302 self.shutdownStartTime)
1303 if (timeout < 0 and not self.readDom('xend/unresponsive')):
1304 log.info(
1305 "Domain shutdown timeout expired: name=%s id=%s",
1306 self.info['name_label'], self.domid)
1307 self.storeDom('xend/unresponsive', 'True')
1308 finally:
1309 self.refresh_shutdown_lock.release()
1311 if restart_reason:
1312 threading.Thread(target = self._maybeRestart,
1313 args = (restart_reason,)).start()
1317 # Restart functions - handling whether we come back up on shutdown.
1320 def _clearRestart(self):
1321 self._removeDom("xend/shutdown_start_time")
1324 def _maybeRestart(self, reason):
1325 # Dispatch to the correct method based upon the configured on_{reason}
1326 # behaviour.
1327 actions = {"destroy" : self.destroy,
1328 "restart" : self._restart,
1329 "preserve" : self._preserve,
1330 "rename-restart" : self._renameRestart}
1332 action_conf = {
1333 'poweroff': 'actions_after_shutdown',
1334 'reboot': 'actions_after_reboot',
1335 'crash': 'actions_after_crash',
1338 action_target = self.info.get(action_conf.get(reason))
1339 func = actions.get(action_target, None)
1340 if func and callable(func):
1341 func()
1342 else:
1343 self.destroy() # default to destroy
1345 def _renameRestart(self):
1346 self._restart(True)
1348 def _restart(self, rename = False):
1349 """Restart the domain after it has exited.
1351 @param rename True if the old domain is to be renamed and preserved,
1352 False if it is to be destroyed.
1353 """
1354 from xen.xend import XendDomain
1356 if self._readVm(RESTART_IN_PROGRESS):
1357 log.error('Xend failed during restart of domain %s. '
1358 'Refusing to restart to avoid loops.',
1359 str(self.domid))
1360 self.destroy()
1361 return
1363 old_domid = self.domid
1364 self._writeVm(RESTART_IN_PROGRESS, 'True')
1366 now = time.time()
1367 rst = self._readVm('xend/previous_restart_time')
1368 if rst:
1369 rst = float(rst)
1370 timeout = now - rst
1371 if timeout < MINIMUM_RESTART_TIME:
1372 log.error(
1373 'VM %s restarting too fast (%f seconds since the last '
1374 'restart). Refusing to restart to avoid loops.',
1375 self.info['name_label'], timeout)
1376 self.destroy()
1377 return
1379 self._writeVm('xend/previous_restart_time', str(now))
1381 try:
1382 if rename:
1383 self._preserveForRestart()
1384 else:
1385 self._unwatchVm()
1386 self.destroyDomain()
1388 # new_dom's VM will be the same as this domain's VM, except where
1389 # the rename flag has instructed us to call preserveForRestart.
1390 # In that case, it is important that we remove the
1391 # RESTART_IN_PROGRESS node from the new domain, not the old one,
1392 # once the new one is available.
1394 new_dom = None
1395 try:
1396 new_dom = XendDomain.instance().domain_create_from_dict(
1397 self.info)
1398 new_dom.waitForDevices()
1399 new_dom.unpause()
1400 rst_cnt = self._readVm('xend/restart_count')
1401 rst_cnt = int(rst_cnt) + 1
1402 self._writeVm('xend/restart_count', str(rst_cnt))
1403 new_dom._removeVm(RESTART_IN_PROGRESS)
1404 except:
1405 if new_dom:
1406 new_dom._removeVm(RESTART_IN_PROGRESS)
1407 new_dom.destroy()
1408 else:
1409 self._removeVm(RESTART_IN_PROGRESS)
1410 raise
1411 except:
1412 log.exception('Failed to restart domain %s.', str(old_domid))
1414 def _preserveForRestart(self):
1415 """Preserve a domain that has been shut down, by giving it a new UUID,
1416 cloning the VM details, and giving it a new name. This allows us to
1417 keep this domain for debugging, but restart a new one in its place
1418 preserving the restart semantics (name and UUID preserved).
1419 """
1421 new_uuid = uuid.createString()
1422 new_name = 'Domain-%s' % new_uuid
1423 log.info("Renaming dead domain %s (%d, %s) to %s (%s).",
1424 self.info['name_label'], self.domid, self.info['uuid'],
1425 new_name, new_uuid)
1426 self._unwatchVm()
1427 self._releaseDevices()
1428 self.info['name_label'] = new_name
1429 self.info['uuid'] = new_uuid
1430 self.vmpath = XS_VMROOT + new_uuid
1431 self._storeVmDetails()
1432 self._preserve()
1435 def _preserve(self):
1436 log.info("Preserving dead domain %s (%d).", self.info['name_label'],
1437 self.domid)
1438 self._unwatchVm()
1439 self.storeDom('xend/shutdown_completed', 'True')
1440 self._stateSet(DOM_STATE_HALTED)
1443 # Debugging ..
1446 def dumpCore(self, corefile = None):
1447 """Create a core dump for this domain.
1449 @raise: XendError if core dumping failed.
1450 """
1452 try:
1453 if not corefile:
1454 this_time = time.strftime("%Y-%m%d-%H%M.%S", time.localtime())
1455 corefile = "/var/xen/dump/%s-%s.%s.core" % (this_time,
1456 self.info['name_label'], self.domid)
1458 if os.path.isdir(corefile):
1459 raise XendError("Cannot dump core in a directory: %s" %
1460 corefile)
1462 xc.domain_dumpcore(self.domid, corefile)
1463 except RuntimeError, ex:
1464 corefile_incomp = corefile+'-incomplete'
1465 os.rename(corefile, corefile_incomp)
1466 log.exception("XendDomainInfo.dumpCore failed: id = %s name = %s",
1467 self.domid, self.info['name_label'])
1468 raise XendError("Failed to dump core: %s" % str(ex))
1471 # Device creation/deletion functions
1474 def _createDevice(self, deviceClass, devConfig):
1475 return self.getDeviceController(deviceClass).createDevice(devConfig)
1477 def _waitForDevice(self, deviceClass, devid):
1478 return self.getDeviceController(deviceClass).waitForDevice(devid)
1480 def _waitForDeviceUUID(self, dev_uuid):
1481 deviceClass, config = self.info['devices'].get(dev_uuid)
1482 self._waitForDevice(deviceClass, config['devid'])
1484 def _waitForDevice_destroy(self, deviceClass, devid, backpath):
1485 return self.getDeviceController(deviceClass).waitForDevice_destroy(
1486 devid, backpath)
1488 def _reconfigureDevice(self, deviceClass, devid, devconfig):
1489 return self.getDeviceController(deviceClass).reconfigureDevice(
1490 devid, devconfig)
1492 def _createDevices(self):
1493 """Create the devices for a vm.
1495 @raise: VmError for invalid devices
1496 """
1497 ordered_refs = self.info.ordered_device_refs()
1498 for dev_uuid in ordered_refs:
1499 devclass, config = self.info['devices'][dev_uuid]
1500 if devclass in XendDevices.valid_devices():
1501 log.info("createDevice: %s : %s" % (devclass, scrub_password(config)))
1502 dev_uuid = config.get('uuid')
1503 devid = self._createDevice(devclass, config)
1505 # store devid in XendConfig for caching reasons
1506 if dev_uuid in self.info['devices']:
1507 self.info['devices'][dev_uuid][1]['devid'] = devid
1509 if self.image:
1510 self.image.createDeviceModel()
1512 def _releaseDevices(self, suspend = False):
1513 """Release all domain's devices. Nothrow guarantee."""
1514 if self.image:
1515 try:
1516 log.debug("Destroying device model")
1517 self.image.destroyDeviceModel()
1518 except Exception, e:
1519 log.exception("Device model destroy failed %s" % str(e))
1520 else:
1521 log.debug("No device model")
1523 log.debug("Releasing devices")
1524 t = xstransact("%s/device" % self.dompath)
1525 for devclass in XendDevices.valid_devices():
1526 for dev in t.list(devclass):
1527 try:
1528 log.debug("Removing %s", dev);
1529 self.destroyDevice(devclass, dev, False);
1530 except:
1531 # Log and swallow any exceptions in removal --
1532 # there's nothing more we can do.
1533 log.exception("Device release failed: %s; %s; %s",
1534 self.info['name_label'], devclass, dev)
1538 def getDeviceController(self, name):
1539 """Get the device controller for this domain, and if it
1540 doesn't exist, create it.
1542 @param name: device class name
1543 @type name: string
1544 @rtype: subclass of DevController
1545 """
1546 if name not in self._deviceControllers:
1547 devController = XendDevices.make_controller(name, self)
1548 if not devController:
1549 raise XendError("Unknown device type: %s" % name)
1550 self._deviceControllers[name] = devController
1552 return self._deviceControllers[name]
1555 # Migration functions (public)
1558 def testMigrateDevices(self, network, dst):
1559 """ Notify all device about intention of migration
1560 @raise: XendError for a device that cannot be migrated
1561 """
1562 for (n, c) in self.info.all_devices_sxpr():
1563 rc = self.migrateDevice(n, c, network, dst, DEV_MIGRATE_TEST)
1564 if rc != 0:
1565 raise XendError("Device of type '%s' refuses migration." % n)
1567 def migrateDevices(self, network, dst, step, domName=''):
1568 """Notify the devices about migration
1569 """
1570 ctr = 0
1571 try:
1572 for (dev_type, dev_conf) in self.info.all_devices_sxpr():
1573 self.migrateDevice(dev_type, dev_conf, network, dst,
1574 step, domName)
1575 ctr = ctr + 1
1576 except:
1577 for dev_type, dev_conf in self.info.all_devices_sxpr():
1578 if ctr == 0:
1579 step = step - 1
1580 ctr = ctr - 1
1581 self._recoverMigrateDevice(dev_type, dev_conf, network,
1582 dst, step, domName)
1583 raise
1585 def migrateDevice(self, deviceClass, deviceConfig, network, dst,
1586 step, domName=''):
1587 return self.getDeviceController(deviceClass).migrate(deviceConfig,
1588 network, dst, step, domName)
1590 def _recoverMigrateDevice(self, deviceClass, deviceConfig, network,
1591 dst, step, domName=''):
1592 return self.getDeviceController(deviceClass).recover_migrate(
1593 deviceConfig, network, dst, step, domName)
1596 ## private:
1598 def _constructDomain(self):
1599 """Construct the domain.
1601 @raise: VmError on error
1602 """
1604 log.debug('XendDomainInfo.constructDomain')
1606 self.shutdownStartTime = None
1608 hvm = self.info.is_hvm()
1609 if hvm:
1610 info = xc.xeninfo()
1611 if 'hvm' not in info['xen_caps']:
1612 raise VmError("HVM guest support is unavailable: is VT/AMD-V "
1613 "supported by your CPU and enabled in your "
1614 "BIOS?")
1616 # Hack to pre-reserve some memory for initial domain creation.
1617 # There is an implicit memory overhead for any domain creation. This
1618 # overhead is greater for some types of domain than others. For
1619 # example, an x86 HVM domain will have a default shadow-pagetable
1620 # allocation of 1MB. We free up 2MB here to be on the safe side.
1621 balloon.free(2*1024) # 2MB should be plenty
1623 ssidref = 0
1624 if security.on():
1625 ssidref = security.calc_dom_ssidref_from_info(self.info)
1626 if security.has_authorization(ssidref) == False:
1627 raise VmError("VM is not authorized to run.")
1629 try:
1630 self.domid = xc.domain_create(
1631 domid = 0,
1632 ssidref = ssidref,
1633 handle = uuid.fromString(self.info['uuid']),
1634 hvm = int(hvm))
1635 except Exception, e:
1636 # may get here if due to ACM the operation is not permitted
1637 if security.on():
1638 raise VmError('Domain in conflict set with running domain?')
1640 if self.domid < 0:
1641 raise VmError('Creating domain failed: name=%s' %
1642 self.info['name_label'])
1644 self.dompath = GetDomainPath(self.domid)
1646 self._recreateDom()
1648 # Set timer configration of domain
1649 if hvm:
1650 xc.hvm_set_param(self.domid, HVM_PARAM_TIMER_MODE,
1651 long(self.info["platform"].get("timer_mode")))
1653 # Set maximum number of vcpus in domain
1654 xc.domain_max_vcpus(self.domid, int(self.info['VCPUs_max']))
1656 # Test whether the devices can be assigned with VT-d
1657 pci_str = str(self.info["platform"].get("pci"))
1658 if hvm and pci_str:
1659 bdf = xc.test_assign_device(self.domid, pci_str)
1660 if bdf != 0:
1661 bus = (bdf >> 16) & 0xff
1662 devfn = (bdf >> 8) & 0xff
1663 dev = (devfn >> 3) & 0x1f
1664 func = devfn & 0x7
1665 raise VmError("Fail to assign device(%x:%x.%x): maybe VT-d is "
1666 "not enabled, or the device is not exist, or it "
1667 "has already been assigned to other domain"
1668 % (bus, dev, func))
1670 # register the domain in the list
1671 from xen.xend import XendDomain
1672 XendDomain.instance().add_domain(self)
1674 def _introduceDomain(self):
1675 assert self.domid is not None
1676 assert self.store_mfn is not None
1677 assert self.store_port is not None
1679 try:
1680 IntroduceDomain(self.domid, self.store_mfn, self.store_port)
1681 except RuntimeError, exn:
1682 raise XendError(str(exn))
1685 def _initDomain(self):
1686 log.debug('XendDomainInfo.initDomain: %s %s',
1687 self.domid,
1688 self.info['vcpus_params']['weight'])
1690 self._configureBootloader()
1692 try:
1693 self.image = image.create(self, self.info)
1695 if self.info['platform'].get('localtime', 0):
1696 xc.domain_set_time_offset(self.domid)
1698 xc.domain_setcpuweight(self.domid, \
1699 self.info['vcpus_params']['weight'])
1701 # repin domain vcpus if a restricted cpus list is provided
1702 # this is done prior to memory allocation to aide in memory
1703 # distribution for NUMA systems.
1704 if self.info['cpus'] is not None and len(self.info['cpus']) > 0:
1705 for v in range(0, self.info['VCPUs_max']):
1706 xc.vcpu_setaffinity(self.domid, v, self.info['cpus'])
1708 # Use architecture- and image-specific calculations to determine
1709 # the various headrooms necessary, given the raw configured
1710 # values. maxmem, memory, and shadow are all in KiB.
1711 # but memory_static_max etc are all stored in bytes now.
1712 memory = self.image.getRequiredAvailableMemory(
1713 self.info['memory_dynamic_max'] / 1024)
1714 maxmem = self.image.getRequiredAvailableMemory(
1715 self.info['memory_static_max'] / 1024)
1716 shadow = self.image.getRequiredShadowMemory(
1717 self.info['shadow_memory'] * 1024,
1718 self.info['memory_static_max'] / 1024)
1720 log.debug("_initDomain:shadow_memory=0x%x, memory_static_max=0x%x, memory_static_min=0x%x.", self.info['shadow_memory'], self.info['memory_static_max'], self.info['memory_static_min'],)
1721 # Round shadow up to a multiple of a MiB, as shadow_mem_control
1722 # takes MiB and we must not round down and end up under-providing.
1723 shadow = ((shadow + 1023) / 1024) * 1024
1725 # set memory limit
1726 xc.domain_setmaxmem(self.domid, maxmem)
1728 # Make sure there's enough RAM available for the domain
1729 balloon.free(memory + shadow)
1731 # Set up the shadow memory
1732 shadow_cur = xc.shadow_mem_control(self.domid, shadow / 1024)
1733 self.info['shadow_memory'] = shadow_cur
1735 self._createChannels()
1737 channel_details = self.image.createImage()
1739 self.store_mfn = channel_details['store_mfn']
1740 if 'console_mfn' in channel_details:
1741 self.console_mfn = channel_details['console_mfn']
1742 if 'notes' in channel_details:
1743 self.info.set_notes(channel_details['notes'])
1744 if 'native_protocol' in channel_details:
1745 self.native_protocol = channel_details['native_protocol'];
1747 self._introduceDomain()
1749 self._createDevices()
1751 self.image.cleanupBootloading()
1753 self.info['start_time'] = time.time()
1755 self._stateSet(DOM_STATE_RUNNING)
1756 except VmError, exn:
1757 log.exception("XendDomainInfo.initDomain: exception occurred")
1758 if self.image:
1759 self.image.cleanupBootloading()
1760 raise exn
1761 except RuntimeError, exn:
1762 log.exception("XendDomainInfo.initDomain: exception occurred")
1763 if self.image:
1764 self.image.cleanupBootloading()
1765 raise VmError(str(exn))
1768 def cleanupDomain(self):
1769 """Cleanup domain resources; release devices. Idempotent. Nothrow
1770 guarantee."""
1772 self.refresh_shutdown_lock.acquire()
1773 try:
1774 self.unwatchShutdown()
1775 self._releaseDevices()
1776 bootloader_tidy(self)
1778 if self.image:
1779 self.image = None
1781 try:
1782 self._removeDom()
1783 except:
1784 log.exception("Removing domain path failed.")
1786 self._stateSet(DOM_STATE_HALTED)
1787 self.domid = None # Do not push into _stateSet()!
1788 finally:
1789 self.refresh_shutdown_lock.release()
1792 def unwatchShutdown(self):
1793 """Remove the watch on the domain's control/shutdown node, if any.
1794 Idempotent. Nothrow guarantee. Expects to be protected by the
1795 refresh_shutdown_lock."""
1797 try:
1798 try:
1799 if self.shutdownWatch:
1800 self.shutdownWatch.unwatch()
1801 finally:
1802 self.shutdownWatch = None
1803 except:
1804 log.exception("Unwatching control/shutdown failed.")
1806 def waitForShutdown(self):
1807 self.state_updated.acquire()
1808 try:
1809 while self._stateGet() in (DOM_STATE_RUNNING,DOM_STATE_PAUSED):
1810 self.state_updated.wait()
1811 finally:
1812 self.state_updated.release()
1815 # TODO: recategorise - called from XendCheckpoint
1818 def completeRestore(self, store_mfn, console_mfn):
1820 log.debug("XendDomainInfo.completeRestore")
1822 self.store_mfn = store_mfn
1823 self.console_mfn = console_mfn
1825 self._introduceDomain()
1826 self.image = image.create(self, self.info)
1827 if self.image:
1828 self.image.createDeviceModel(True)
1829 self._storeDomDetails()
1830 self._registerWatches()
1831 self.refreshShutdown()
1833 log.debug("XendDomainInfo.completeRestore done")
1836 def _endRestore(self):
1837 self.setResume(False)
1840 # VM Destroy
1843 def _prepare_phantom_paths(self):
1844 # get associated devices to destroy
1845 # build list of phantom devices to be removed after normal devices
1846 plist = []
1847 if self.domid is not None:
1848 from xen.xend.xenstore.xstransact import xstransact
1849 t = xstransact("%s/device/vbd" % GetDomainPath(self.domid))
1850 for dev in t.list():
1851 backend_phantom_vbd = xstransact.Read("%s/device/vbd/%s/phantom_vbd" \
1852 % (self.dompath, dev))
1853 if backend_phantom_vbd is not None:
1854 frontend_phantom_vbd = xstransact.Read("%s/frontend" \
1855 % backend_phantom_vbd)
1856 plist.append(backend_phantom_vbd)
1857 plist.append(frontend_phantom_vbd)
1858 return plist
1860 def _cleanup_phantom_devs(self, plist):
1861 # remove phantom devices
1862 if not plist == []:
1863 time.sleep(2)
1864 for paths in plist:
1865 if paths.find('backend') != -1:
1866 from xen.xend.server import DevController
1867 # Modify online status /before/ updating state (latter is watched by
1868 # drivers, so this ordering avoids a race).
1869 xstransact.Write(paths, 'online', "0")
1870 xstransact.Write(paths, 'state', str(DevController.xenbusState['Closing']))
1871 # force
1872 xstransact.Remove(paths)
1874 def destroy(self):
1875 """Cleanup VM and destroy domain. Nothrow guarantee."""
1877 log.debug("XendDomainInfo.destroy: domid=%s", str(self.domid))
1879 paths = self._prepare_phantom_paths()
1881 self._cleanupVm()
1882 if self.dompath is not None:
1883 self.destroyDomain()
1885 self._cleanup_phantom_devs(paths)
1887 if "transient" in self.info["other_config"] \
1888 and bool(self.info["other_config"]["transient"]):
1889 from xen.xend import XendDomain
1890 XendDomain.instance().domain_delete_by_dominfo(self)
1893 def destroyDomain(self):
1894 log.debug("XendDomainInfo.destroyDomain(%s)", str(self.domid))
1896 paths = self._prepare_phantom_paths()
1898 try:
1899 if self.domid is not None:
1900 xc.domain_destroy_hook(self.domid)
1901 xc.domain_destroy(self.domid)
1902 for state in DOM_STATES_OLD:
1903 self.info[state] = 0
1904 self._stateSet(DOM_STATE_HALTED)
1905 except:
1906 log.exception("XendDomainInfo.destroy: xc.domain_destroy failed.")
1908 from xen.xend import XendDomain
1909 XendDomain.instance().remove_domain(self)
1911 self.cleanupDomain()
1912 self._cleanup_phantom_devs(paths)
1915 def resumeDomain(self):
1916 log.debug("XendDomainInfo.resumeDomain(%s)", str(self.domid))
1918 if self.domid is None:
1919 return
1920 try:
1921 # could also fetch a parsed note from xenstore
1922 fast = self.info.get_notes().get('SUSPEND_CANCEL') and 1 or 0
1923 if not fast:
1924 self._releaseDevices()
1925 self.testDeviceComplete()
1926 self.testvifsComplete()
1927 log.debug("XendDomainInfo.resumeDomain: devices released")
1929 self._resetChannels()
1931 self._removeDom('control/shutdown')
1932 self._removeDom('device-misc/vif/nextDeviceID')
1934 self._createChannels()
1935 self._introduceDomain()
1936 self._storeDomDetails()
1938 self._createDevices()
1939 log.debug("XendDomainInfo.resumeDomain: devices created")
1941 xc.domain_resume(self.domid, fast)
1942 ResumeDomain(self.domid)
1943 except:
1944 log.exception("XendDomainInfo.resume: xc.domain_resume failed on domain %s." % (str(self.domid)))
1945 self.image.resumeDeviceModel()
1946 log.debug("XendDomainInfo.resumeDomain: completed")
1950 # Channels for xenstore and console
1953 def _createChannels(self):
1954 """Create the channels to the domain.
1955 """
1956 self.store_port = self._createChannel()
1957 self.console_port = self._createChannel()
1960 def _createChannel(self):
1961 """Create an event channel to the domain.
1962 """
1963 try:
1964 if self.domid != None:
1965 return xc.evtchn_alloc_unbound(domid = self.domid,
1966 remote_dom = 0)
1967 except:
1968 log.exception("Exception in alloc_unbound(%s)", str(self.domid))
1969 raise
1971 def _resetChannels(self):
1972 """Reset all event channels in the domain.
1973 """
1974 try:
1975 if self.domid != None:
1976 return xc.evtchn_reset(dom = self.domid)
1977 except:
1978 log.exception("Exception in evtcnh_reset(%s)", str(self.domid))
1979 raise
1983 # Bootloader configuration
1986 def _configureBootloader(self):
1987 """Run the bootloader if we're configured to do so."""
1989 blexec = self.info['PV_bootloader']
1990 bootloader_args = self.info['PV_bootloader_args']
1991 kernel = self.info['PV_kernel']
1992 ramdisk = self.info['PV_ramdisk']
1993 args = self.info['PV_args']
1994 boot = self.info['HVM_boot_policy']
1996 if boot:
1997 # HVM booting.
1998 pass
1999 elif not blexec and kernel:
2000 # Boot from dom0. Nothing left to do -- the kernel and ramdisk
2001 # will be picked up by image.py.
2002 pass
2003 else:
2004 # Boot using bootloader
2005 if not blexec or blexec == 'pygrub':
2006 blexec = osdep.pygrub_path
2008 blcfg = None
2009 disks = [x for x in self.info['vbd_refs']
2010 if self.info['devices'][x][1]['bootable']]
2012 if not disks:
2013 msg = "Had a bootloader specified, but no disks are bootable"
2014 log.error(msg)
2015 raise VmError(msg)
2017 devinfo = self.info['devices'][disks[0]]
2018 devtype = devinfo[0]
2019 disk = devinfo[1]['uname']
2021 fn = blkdev_uname_to_file(disk)
2022 taptype = blkdev_uname_to_taptype(disk)
2023 mounted = devtype == 'tap' and taptype != 'aio' and taptype != 'sync' and not os.stat(fn).st_rdev
2024 if mounted:
2025 # This is a file, not a device. pygrub can cope with a
2026 # file if it's raw, but if it's QCOW or other such formats
2027 # used through blktap, then we need to mount it first.
2029 log.info("Mounting %s on %s." %
2030 (fn, BOOTLOADER_LOOPBACK_DEVICE))
2032 vbd = {
2033 'mode': 'RO',
2034 'device': BOOTLOADER_LOOPBACK_DEVICE,
2037 from xen.xend import XendDomain
2038 dom0 = XendDomain.instance().privilegedDomain()
2039 dom0._waitForDeviceUUID(dom0.create_vbd(vbd, disk))
2040 fn = BOOTLOADER_LOOPBACK_DEVICE
2042 try:
2043 blcfg = bootloader(blexec, fn, self, False,
2044 bootloader_args, kernel, ramdisk, args)
2045 finally:
2046 if mounted:
2047 log.info("Unmounting %s from %s." %
2048 (fn, BOOTLOADER_LOOPBACK_DEVICE))
2050 dom0.destroyDevice('tap', BOOTLOADER_LOOPBACK_DEVICE)
2052 if blcfg is None:
2053 msg = "Had a bootloader specified, but can't find disk"
2054 log.error(msg)
2055 raise VmError(msg)
2057 self.info.update_with_image_sxp(blcfg, True)
2061 # VM Functions
2064 def _readVMDetails(self, params):
2065 """Read the specified parameters from the store.
2066 """
2067 try:
2068 return self._gatherVm(*params)
2069 except ValueError:
2070 # One of the int/float entries in params has a corresponding store
2071 # entry that is invalid. We recover, because older versions of
2072 # Xend may have put the entry there (memory/target, for example),
2073 # but this is in general a bad situation to have reached.
2074 log.exception(
2075 "Store corrupted at %s! Domain %d's configuration may be "
2076 "affected.", self.vmpath, self.domid)
2077 return []
2079 def _cleanupVm(self):
2080 """Cleanup VM resources. Idempotent. Nothrow guarantee."""
2082 self._unwatchVm()
2084 try:
2085 self._removeVm()
2086 except:
2087 log.exception("Removing VM path failed.")
2090 def checkLiveMigrateMemory(self):
2091 """ Make sure there's enough memory to migrate this domain """
2092 overhead_kb = 0
2093 if arch.type == "x86":
2094 # 1MB per vcpu plus 4Kib/Mib of RAM. This is higher than
2095 # the minimum that Xen would allocate if no value were given.
2096 overhead_kb = self.info['VCPUs_max'] * 1024 + \
2097 (self.info['memory_static_max'] / 1024 / 1024) * 4
2098 overhead_kb = ((overhead_kb + 1023) / 1024) * 1024
2099 # The domain might already have some shadow memory
2100 overhead_kb -= xc.shadow_mem_control(self.domid) * 1024
2101 if overhead_kb > 0:
2102 balloon.free(overhead_kb)
2104 def _unwatchVm(self):
2105 """Remove the watch on the VM path, if any. Idempotent. Nothrow
2106 guarantee."""
2107 try:
2108 try:
2109 if self.vmWatch:
2110 self.vmWatch.unwatch()
2111 finally:
2112 self.vmWatch = None
2113 except:
2114 log.exception("Unwatching VM path failed.")
2116 def testDeviceComplete(self):
2117 """ For Block IO migration safety we must ensure that
2118 the device has shutdown correctly, i.e. all blocks are
2119 flushed to disk
2120 """
2121 start = time.time()
2122 while True:
2123 test = 0
2124 diff = time.time() - start
2125 for i in self.getDeviceController('vbd').deviceIDs():
2126 test = 1
2127 log.info("Dev %s still active, looping...", i)
2128 time.sleep(0.1)
2130 if test == 0:
2131 break
2132 if diff >= MIGRATE_TIMEOUT:
2133 log.info("Dev still active but hit max loop timeout")
2134 break
2136 def testvifsComplete(self):
2137 """ In case vifs are released and then created for the same
2138 domain, we need to wait the device shut down.
2139 """
2140 start = time.time()
2141 while True:
2142 test = 0
2143 diff = time.time() - start
2144 for i in self.getDeviceController('vif').deviceIDs():
2145 test = 1
2146 log.info("Dev %s still active, looping...", i)
2147 time.sleep(0.1)
2149 if test == 0:
2150 break
2151 if diff >= MIGRATE_TIMEOUT:
2152 log.info("Dev still active but hit max loop timeout")
2153 break
2155 def _storeVmDetails(self):
2156 to_store = {}
2158 for key in XendConfig.LEGACY_XENSTORE_VM_PARAMS:
2159 info_key = XendConfig.LEGACY_CFG_TO_XENAPI_CFG.get(key, key)
2160 if self._infoIsSet(info_key):
2161 to_store[key] = str(self.info[info_key])
2163 if self._infoIsSet("static_memory_min"):
2164 to_store["memory"] = str(self.info["static_memory_min"])
2165 if self._infoIsSet("static_memory_max"):
2166 to_store["maxmem"] = str(self.info["static_memory_max"])
2168 image_sxpr = self.info.image_sxpr()
2169 if image_sxpr:
2170 to_store['image'] = sxp.to_string(image_sxpr)
2172 if not self._readVm('xend/restart_count'):
2173 to_store['xend/restart_count'] = str(0)
2175 log.debug("Storing VM details: %s", scrub_password(to_store))
2177 self._writeVm(to_store)
2178 self._setVmPermissions()
2181 def _setVmPermissions(self):
2182 """Allow the guest domain to read its UUID. We don't allow it to
2183 access any other entry, for security."""
2184 xstransact.SetPermissions('%s/uuid' % self.vmpath,
2185 { 'dom' : self.domid,
2186 'read' : True,
2187 'write' : False })
2190 # Utility functions
2193 def __getattr__(self, name):
2194 if name == "state":
2195 log.warn("Somebody tried to read XendDomainInfo.state... should us _stateGet()!!!")
2196 log.warn("".join(traceback.format_stack()))
2197 return self._stateGet()
2198 else:
2199 raise AttributeError()
2201 def __setattr__(self, name, value):
2202 if name == "state":
2203 log.warn("Somebody tried to set XendDomainInfo.state... should us _stateGet()!!!")
2204 log.warn("".join(traceback.format_stack()))
2205 self._stateSet(value)
2206 else:
2207 self.__dict__[name] = value
2209 def _stateSet(self, state):
2210 self.state_updated.acquire()
2211 try:
2212 # TODO Not sure this is correct...
2213 # _stateGet is live now. Why not fire event
2214 # even when it hasn't changed?
2215 if self._stateGet() != state:
2216 self.state_updated.notifyAll()
2217 import XendAPI
2218 XendAPI.event_dispatch('mod', 'VM', self.info['uuid'],
2219 'power_state')
2220 finally:
2221 self.state_updated.release()
2223 def _stateGet(self):
2224 # Lets try and reconsitute the state from xc
2225 # first lets try and get the domain info
2226 # from xc - this will tell us if the domain
2227 # exists
2228 info = dom_get(self.getDomid())
2229 if info is None or info['shutdown']:
2230 # We are either HALTED or SUSPENDED
2231 # check saved image exists
2232 from xen.xend import XendDomain
2233 managed_config_path = \
2234 XendDomain.instance()._managed_check_point_path( \
2235 self.get_uuid())
2236 if os.path.exists(managed_config_path):
2237 return XEN_API_VM_POWER_STATE_SUSPENDED
2238 else:
2239 return XEN_API_VM_POWER_STATE_HALTED
2240 else:
2241 # We are either RUNNING or PAUSED
2242 if info['paused']:
2243 return XEN_API_VM_POWER_STATE_PAUSED
2244 else:
2245 return XEN_API_VM_POWER_STATE_RUNNING
2247 def _infoIsSet(self, name):
2248 return name in self.info and self.info[name] is not None
2250 def _checkName(self, name):
2251 """Check if a vm name is valid. Valid names contain alphabetic
2252 characters, digits, or characters in '_-.:/+'.
2253 The same name cannot be used for more than one vm at the same time.
2255 @param name: name
2256 @raise: VmError if invalid
2257 """
2258 from xen.xend import XendDomain
2260 if name is None or name == '':
2261 raise VmError('Missing VM Name')
2263 if not re.search(r'^[A-Za-z0-9_\-\.\:\/\+]+$', name):
2264 raise VmError('Invalid VM Name')
2266 dom = XendDomain.instance().domain_lookup_nr(name)
2267 if dom and dom.info['uuid'] != self.info['uuid']:
2268 raise VmError("VM name '%s' already exists%s" %
2269 (name,
2270 dom.domid is not None and
2271 (" as domain %s" % str(dom.domid)) or ""))
2274 def update(self, info = None, refresh = True, transaction = None):
2275 """Update with info from xc.domain_getinfo().
2276 """
2277 log.trace("XendDomainInfo.update(%s) on domain %s", info,
2278 str(self.domid))
2280 if not info:
2281 info = dom_get(self.domid)
2282 if not info:
2283 return
2285 if info["maxmem_kb"] < 0:
2286 info["maxmem_kb"] = XendNode.instance() \
2287 .physinfo_dict()['total_memory'] * 1024
2289 #ssidref field not used any longer
2290 if 'ssidref' in info:
2291 info.pop('ssidref')
2293 # make sure state is reset for info
2294 # TODO: we should eventually get rid of old_dom_states
2296 self.info.update_config(info)
2297 self._update_consoles(transaction)
2299 if refresh:
2300 self.refreshShutdown(info)
2302 log.trace("XendDomainInfo.update done on domain %s: %s",
2303 str(self.domid), self.info)
2305 def sxpr(self, ignore_store = False, legacy_only = True):
2306 result = self.info.to_sxp(domain = self,
2307 ignore_devices = ignore_store,
2308 legacy_only = legacy_only)
2310 #if not ignore_store and self.dompath:
2311 # vnc_port = self.readDom('console/vnc-port')
2312 # if vnc_port is not None:
2313 # result.append(['device',
2314 # ['console', ['vnc-port', str(vnc_port)]]])
2316 return result
2318 # Xen API
2319 # ----------------------------------------------------------------
2321 def get_uuid(self):
2322 dom_uuid = self.info.get('uuid')
2323 if not dom_uuid: # if it doesn't exist, make one up
2324 dom_uuid = uuid.createString()
2325 self.info['uuid'] = dom_uuid
2326 return dom_uuid
2328 def get_memory_static_max(self):
2329 return self.info.get('memory_static_max', 0)
2330 def get_memory_static_min(self):
2331 return self.info.get('memory_static_min', 0)
2332 def get_memory_dynamic_max(self):
2333 return self.info.get('memory_dynamic_max', 0)
2334 def get_memory_dynamic_min(self):
2335 return self.info.get('memory_dynamic_min', 0)
2337 # only update memory-related config values if they maintain sanity
2338 def _safe_set_memory(self, key, newval):
2339 oldval = self.info.get(key, 0)
2340 try:
2341 self.info[key] = newval
2342 self.info._memory_sanity_check()
2343 except Exception, ex:
2344 self.info[key] = oldval
2345 raise
2347 def set_memory_static_max(self, val):
2348 self._safe_set_memory('memory_static_max', val)
2349 def set_memory_static_min(self, val):
2350 self._safe_set_memory('memory_static_min', val)
2351 def set_memory_dynamic_max(self, val):
2352 self._safe_set_memory('memory_dynamic_max', val)
2353 def set_memory_dynamic_min(self, val):
2354 self._safe_set_memory('memory_dynamic_min', val)
2356 def get_vcpus_params(self):
2357 if self.getDomid() is None:
2358 return self.info['vcpus_params']
2360 retval = xc.sched_credit_domain_get(self.getDomid())
2361 return retval
2362 def get_power_state(self):
2363 return XEN_API_VM_POWER_STATE[self._stateGet()]
2364 def get_platform(self):
2365 return self.info.get('platform', {})
2366 def get_pci_bus(self):
2367 return self.info.get('pci_bus', '')
2368 def get_tools_version(self):
2369 return self.info.get('tools_version', {})
2370 def get_metrics(self):
2371 return self.metrics.get_uuid();
2374 def get_security_label(self, xspol=None):
2375 import xen.util.xsm.xsm as security
2376 label = security.get_security_label(self, xspol)
2377 return label
2379 def set_security_label(self, seclab, old_seclab, xspol=None,
2380 xspol_old=None):
2381 """
2382 Set the security label of a domain from its old to
2383 a new value.
2384 @param seclab New security label formatted in the form
2385 <policy type>:<policy name>:<vm label>
2386 @param old_seclab The current security label that the
2387 VM must have.
2388 @param xspol An optional policy under which this
2389 update should be done. If not given,
2390 then the current active policy is used.
2391 @param xspol_old The old policy; only to be passed during
2392 the updating of a policy
2393 @return Returns return code, a string with errors from
2394 the hypervisor's operation, old label of the
2395 domain
2396 """
2397 rc = 0
2398 errors = ""
2399 old_label = ""
2400 new_ssidref = 0
2401 domid = self.getDomid()
2402 res_labels = None
2403 is_policy_update = (xspol_old != None)
2405 from xen.xend.XendXSPolicyAdmin import XSPolicyAdminInstance
2406 from xen.util import xsconstants
2408 state = self._stateGet()
2409 # Relabel only HALTED or RUNNING or PAUSED domains
2410 if domid != 0 and \
2411 state not in \
2412 [ DOM_STATE_HALTED, DOM_STATE_RUNNING, DOM_STATE_PAUSED, \
2413 DOM_STATE_SUSPENDED ]:
2414 log.warn("Relabeling domain not possible in state '%s'" %
2415 DOM_STATES[state])
2416 return (-xsconstants.XSERR_VM_WRONG_STATE, "", "", 0)
2418 # Remove security label. Works only for halted domains
2419 if not seclab or seclab == "":
2420 if state not in [ DOM_STATE_HALTED ]:
2421 return (-xsconstants.XSERR_VM_WRONG_STATE, "", "", 0)
2423 if self.info.has_key('security_label'):
2424 old_label = self.info['security_label']
2425 # Check label against expected one.
2426 if old_label != old_seclab:
2427 return (-xsconstants.XSERR_BAD_LABEL, "", "", 0)
2428 del self.info['security_label']
2429 xen.xend.XendDomain.instance().managed_config_save(self)
2430 return (xsconstants.XSERR_SUCCESS, "", "", 0)
2432 tmp = seclab.split(":")
2433 if len(tmp) != 3:
2434 return (-xsconstants.XSERR_BAD_LABEL_FORMAT, "", "", 0)
2435 typ, policy, label = tmp
2437 poladmin = XSPolicyAdminInstance()
2438 if not xspol:
2439 xspol = poladmin.get_policy_by_name(policy)
2441 if state in [ DOM_STATE_RUNNING, DOM_STATE_PAUSED ]:
2442 #if domain is running or paused try to relabel in hypervisor
2443 if not xspol:
2444 return (-xsconstants.XSERR_POLICY_NOT_LOADED, "", "", 0)
2446 if typ != xspol.get_type_name() or \
2447 policy != xspol.get_name():
2448 return (-xsconstants.XSERR_BAD_LABEL, "", "", 0)
2450 if typ == xsconstants.ACM_POLICY_ID:
2451 new_ssidref = xspol.vmlabel_to_ssidref(label)
2452 if new_ssidref == xsconstants.INVALID_SSIDREF:
2453 return (-xsconstants.XSERR_BAD_LABEL, "", "", 0)
2455 # Check that all used resources are accessible under the
2456 # new label
2457 if not is_policy_update and \
2458 not security.resources_compatible_with_vmlabel(xspol,
2459 self, label):
2460 return (-xsconstants.XSERR_BAD_LABEL, "", "", 0)
2462 #Check label against expected one. Can only do this
2463 # if the policy hasn't changed underneath in the meantime
2464 if xspol_old == None:
2465 old_label = self.get_security_label()
2466 if old_label != old_seclab:
2467 log.info("old_label != old_seclab: %s != %s" %
2468 (old_label, old_seclab))
2469 return (-xsconstants.XSERR_BAD_LABEL, "", "", 0)
2471 # relabel domain in the hypervisor
2472 rc, errors = security.relabel_domains([[domid, new_ssidref]])
2473 log.info("rc from relabeling in HV: %d" % rc)
2474 else:
2475 return (-xsconstants.XSERR_POLICY_TYPE_UNSUPPORTED, "", "", 0)
2477 if rc == 0:
2478 # HALTED, RUNNING or PAUSED
2479 if domid == 0:
2480 if xspol:
2481 self.info['security_label'] = seclab
2482 ssidref = poladmin.set_domain0_bootlabel(xspol, label)
2483 else:
2484 return (-xsconstants.XSERR_POLICY_NOT_LOADED, "", "", 0)
2485 else:
2486 if self.info.has_key('security_label'):
2487 old_label = self.info['security_label']
2488 # Check label against expected one, unless wildcard
2489 if old_label != old_seclab:
2490 return (-xsconstants.XSERR_BAD_LABEL, "", "", 0)
2492 self.info['security_label'] = seclab
2494 try:
2495 xen.xend.XendDomain.instance().managed_config_save(self)
2496 except:
2497 pass
2498 return (rc, errors, old_label, new_ssidref)
2500 def get_on_shutdown(self):
2501 after_shutdown = self.info.get('actions_after_shutdown')
2502 if not after_shutdown or after_shutdown not in XEN_API_ON_NORMAL_EXIT:
2503 return XEN_API_ON_NORMAL_EXIT[-1]
2504 return after_shutdown
2506 def get_on_reboot(self):
2507 after_reboot = self.info.get('actions_after_reboot')
2508 if not after_reboot or after_reboot not in XEN_API_ON_NORMAL_EXIT:
2509 return XEN_API_ON_NORMAL_EXIT[-1]
2510 return after_reboot
2512 def get_on_suspend(self):
2513 # TODO: not supported
2514 after_suspend = self.info.get('actions_after_suspend')
2515 if not after_suspend or after_suspend not in XEN_API_ON_NORMAL_EXIT:
2516 return XEN_API_ON_NORMAL_EXIT[-1]
2517 return after_suspend
2519 def get_on_crash(self):
2520 after_crash = self.info.get('actions_after_crash')
2521 if not after_crash or after_crash not in XEN_API_ON_CRASH_BEHAVIOUR:
2522 return XEN_API_ON_CRASH_BEHAVIOUR[0]
2523 return after_crash
2525 def get_dev_config_by_uuid(self, dev_class, dev_uuid):
2526 """ Get's a device configuration either from XendConfig or
2527 from the DevController.
2529 @param dev_class: device class, either, 'vbd' or 'vif'
2530 @param dev_uuid: device UUID
2532 @rtype: dictionary
2533 """
2534 dev_type, dev_config = self.info['devices'].get(dev_uuid, (None, None))
2536 # shortcut if the domain isn't started because
2537 # the devcontrollers will have no better information
2538 # than XendConfig.
2539 if self._stateGet() in (XEN_API_VM_POWER_STATE_HALTED,):
2540 if dev_config:
2541 return copy.deepcopy(dev_config)
2542 return None
2544 # instead of using dev_class, we use the dev_type
2545 # that is from XendConfig.
2546 controller = self.getDeviceController(dev_type)
2547 if not controller:
2548 return None
2550 all_configs = controller.getAllDeviceConfigurations()
2551 if not all_configs:
2552 return None
2554 updated_dev_config = copy.deepcopy(dev_config)
2555 for _devid, _devcfg in all_configs.items():
2556 if _devcfg.get('uuid') == dev_uuid:
2557 updated_dev_config.update(_devcfg)
2558 updated_dev_config['id'] = _devid
2559 return updated_dev_config
2561 return updated_dev_config
2563 def get_dev_xenapi_config(self, dev_class, dev_uuid):
2564 config = self.get_dev_config_by_uuid(dev_class, dev_uuid)
2565 if not config:
2566 return {}
2568 config['VM'] = self.get_uuid()
2570 if dev_class == 'vif':
2571 if not config.has_key('name'):
2572 config['name'] = config.get('vifname', '')
2573 if not config.has_key('MAC'):
2574 config['MAC'] = config.get('mac', '')
2575 if not config.has_key('type'):
2576 config['type'] = 'paravirtualised'
2577 if not config.has_key('device'):
2578 devid = config.get('id')
2579 if devid != None:
2580 config['device'] = 'eth%d' % devid
2581 else:
2582 config['device'] = ''
2584 if not config.has_key('network'):
2585 try:
2586 bridge = config.get('bridge', None)
2587 if bridge is None:
2588 from xen.util import Brctl
2589 if_to_br = dict([(i,b)
2590 for (b,ifs) in Brctl.get_state().items()
2591 for i in ifs])
2592 vifname = "vif%s.%s" % (self.getDomid(),
2593 config.get('id'))
2594 bridge = if_to_br.get(vifname, None)
2595 config['network'] = \
2596 XendNode.instance().bridge_to_network(
2597 config.get('bridge')).get_uuid()
2598 except Exception:
2599 log.exception('bridge_to_network')
2600 # Ignore this for now -- it may happen if the device
2601 # has been specified using the legacy methods, but at
2602 # some point we're going to have to figure out how to
2603 # handle that properly.
2605 config['MTU'] = 1500 # TODO
2607 if self._stateGet() not in (XEN_API_VM_POWER_STATE_HALTED,):
2608 xennode = XendNode.instance()
2609 rx_bps, tx_bps = xennode.get_vif_util(self.domid, devid)
2610 config['io_read_kbs'] = rx_bps/1024
2611 config['io_write_kbs'] = tx_bps/1024
2612 rx, tx = xennode.get_vif_stat(self.domid, devid)
2613 config['io_total_read_kbs'] = rx/1024
2614 config['io_total_write_kbs'] = tx/1024
2615 else:
2616 config['io_read_kbs'] = 0.0
2617 config['io_write_kbs'] = 0.0
2618 config['io_total_read_kbs'] = 0.0
2619 config['io_total_write_kbs'] = 0.0
2621 config['security_label'] = config.get('security_label', '')
2623 if dev_class == 'vbd':
2625 if self._stateGet() not in (XEN_API_VM_POWER_STATE_HALTED,):
2626 controller = self.getDeviceController(dev_class)
2627 devid, _1, _2 = controller.getDeviceDetails(config)
2628 xennode = XendNode.instance()
2629 rd_blkps, wr_blkps = xennode.get_vbd_util(self.domid, devid)
2630 config['io_read_kbs'] = rd_blkps
2631 config['io_write_kbs'] = wr_blkps
2632 else:
2633 config['io_read_kbs'] = 0.0
2634 config['io_write_kbs'] = 0.0
2636 config['VDI'] = config.get('VDI', '')
2637 config['device'] = config.get('dev', '')
2638 if ':' in config['device']:
2639 vbd_name, vbd_type = config['device'].split(':', 1)
2640 config['device'] = vbd_name
2641 if vbd_type == 'cdrom':
2642 config['type'] = XEN_API_VBD_TYPE[0]
2643 else:
2644 config['type'] = XEN_API_VBD_TYPE[1]
2646 config['driver'] = 'paravirtualised' # TODO
2647 config['image'] = config.get('uname', '')
2649 if config.get('mode', 'r') == 'r':
2650 config['mode'] = 'RO'
2651 else:
2652 config['mode'] = 'RW'
2654 if dev_class == 'vtpm':
2655 if not config.has_key('type'):
2656 config['type'] = 'paravirtualised' # TODO
2657 if not config.has_key('backend'):
2658 config['backend'] = "00000000-0000-0000-0000-000000000000"
2660 return config
2662 def get_dev_property(self, dev_class, dev_uuid, field):
2663 config = self.get_dev_xenapi_config(dev_class, dev_uuid)
2664 try:
2665 return config[field]
2666 except KeyError:
2667 raise XendError('Invalid property for device: %s' % field)
2669 def set_dev_property(self, dev_class, dev_uuid, field, value):
2670 self.info['devices'][dev_uuid][1][field] = value
2672 def get_vcpus_util(self):
2673 vcpu_util = {}
2674 xennode = XendNode.instance()
2675 if 'VCPUs_max' in self.info and self.domid != None:
2676 for i in range(0, self.info['VCPUs_max']):
2677 util = xennode.get_vcpu_util(self.domid, i)
2678 vcpu_util[str(i)] = util
2680 return vcpu_util
2682 def get_consoles(self):
2683 return self.info.get('console_refs', [])
2685 def get_vifs(self):
2686 return self.info.get('vif_refs', [])
2688 def get_vbds(self):
2689 return self.info.get('vbd_refs', [])
2691 def get_vtpms(self):
2692 return self.info.get('vtpm_refs', [])
2694 def create_vbd(self, xenapi_vbd, vdi_image_path):
2695 """Create a VBD using a VDI from XendStorageRepository.
2697 @param xenapi_vbd: vbd struct from the Xen API
2698 @param vdi_image_path: VDI UUID
2699 @rtype: string
2700 @return: uuid of the device
2701 """
2702 xenapi_vbd['image'] = vdi_image_path
2703 if vdi_image_path.startswith('tap'):
2704 dev_uuid = self.info.device_add('tap', cfg_xenapi = xenapi_vbd)
2705 else:
2706 dev_uuid = self.info.device_add('vbd', cfg_xenapi = xenapi_vbd)
2708 if not dev_uuid:
2709 raise XendError('Failed to create device')
2711 if self._stateGet() in (XEN_API_VM_POWER_STATE_RUNNING,
2712 XEN_API_VM_POWER_STATE_PAUSED):
2713 _, config = self.info['devices'][dev_uuid]
2715 if vdi_image_path.startswith('tap'):
2716 dev_control = self.getDeviceController('tap')
2717 else:
2718 dev_control = self.getDeviceController('vbd')
2720 try:
2721 devid = dev_control.createDevice(config)
2722 dev_control.waitForDevice(devid)
2723 self.info.device_update(dev_uuid,
2724 cfg_xenapi = {'devid': devid})
2725 except Exception, exn:
2726 log.exception(exn)
2727 del self.info['devices'][dev_uuid]
2728 self.info['vbd_refs'].remove(dev_uuid)
2729 raise
2731 return dev_uuid
2733 def create_phantom_vbd_with_vdi(self, xenapi_vbd, vdi_image_path):
2734 """Create a VBD using a VDI from XendStorageRepository.
2736 @param xenapi_vbd: vbd struct from the Xen API
2737 @param vdi_image_path: VDI UUID
2738 @rtype: string
2739 @return: uuid of the device
2740 """
2741 xenapi_vbd['image'] = vdi_image_path
2742 dev_uuid = self.info.phantom_device_add('tap', cfg_xenapi = xenapi_vbd)
2743 if not dev_uuid:
2744 raise XendError('Failed to create device')
2746 if self._stateGet() == XEN_API_VM_POWER_STATE_RUNNING:
2747 _, config = self.info['devices'][dev_uuid]
2748 config['devid'] = self.getDeviceController('tap').createDevice(config)
2750 return config['devid']
2752 def create_vif(self, xenapi_vif):
2753 """Create VIF device from the passed struct in Xen API format.
2755 @param xenapi_vif: Xen API VIF Struct.
2756 @rtype: string
2757 @return: UUID
2758 """
2759 dev_uuid = self.info.device_add('vif', cfg_xenapi = xenapi_vif)
2760 if not dev_uuid:
2761 raise XendError('Failed to create device')
2763 if self._stateGet() in (XEN_API_VM_POWER_STATE_RUNNING,
2764 XEN_API_VM_POWER_STATE_PAUSED):
2766 _, config = self.info['devices'][dev_uuid]
2767 dev_control = self.getDeviceController('vif')
2769 try:
2770 devid = dev_control.createDevice(config)
2771 dev_control.waitForDevice(devid)
2772 self.info.device_update(dev_uuid,
2773 cfg_xenapi = {'devid': devid})
2774 except Exception, exn:
2775 log.exception(exn)
2776 del self.info['devices'][dev_uuid]
2777 self.info['vif_refs'].remove(dev_uuid)
2778 raise
2780 return dev_uuid
2782 def create_vtpm(self, xenapi_vtpm):
2783 """Create a VTPM device from the passed struct in Xen API format.
2785 @return: uuid of the device
2786 @rtype: string
2787 """
2789 if self._stateGet() not in (DOM_STATE_HALTED,):
2790 raise VmError("Can only add vTPM to a halted domain.")
2791 if self.get_vtpms() != []:
2792 raise VmError('Domain already has a vTPM.')
2793 dev_uuid = self.info.device_add('vtpm', cfg_xenapi = xenapi_vtpm)
2794 if not dev_uuid:
2795 raise XendError('Failed to create device')
2797 return dev_uuid
2799 def create_console(self, xenapi_console):
2800 """ Create a console device from a Xen API struct.
2802 @return: uuid of device
2803 @rtype: string
2804 """
2805 if self._stateGet() not in (DOM_STATE_HALTED,):
2806 raise VmError("Can only add console to a halted domain.")
2808 dev_uuid = self.info.device_add('console', cfg_xenapi = xenapi_console)
2809 if not dev_uuid:
2810 raise XendError('Failed to create device')
2812 return dev_uuid
2814 def set_console_other_config(self, console_uuid, other_config):
2815 self.info.console_update(console_uuid, 'other_config', other_config)
2817 def destroy_device_by_uuid(self, dev_type, dev_uuid):
2818 if dev_uuid not in self.info['devices']:
2819 raise XendError('Device does not exist')
2821 try:
2822 if self._stateGet() in (XEN_API_VM_POWER_STATE_RUNNING,
2823 XEN_API_VM_POWER_STATE_PAUSED):
2824 _, config = self.info['devices'][dev_uuid]
2825 devid = config.get('devid')
2826 if devid != None:
2827 self.getDeviceController(dev_type).destroyDevice(devid, force = False)
2828 else:
2829 raise XendError('Unable to get devid for device: %s:%s' %
2830 (dev_type, dev_uuid))
2831 finally:
2832 del self.info['devices'][dev_uuid]
2833 self.info['%s_refs' % dev_type].remove(dev_uuid)
2835 def destroy_vbd(self, dev_uuid):
2836 self.destroy_device_by_uuid('vbd', dev_uuid)
2838 def destroy_vif(self, dev_uuid):
2839 self.destroy_device_by_uuid('vif', dev_uuid)
2841 def destroy_vtpm(self, dev_uuid):
2842 self.destroy_device_by_uuid('vtpm', dev_uuid)
2844 def has_device(self, dev_class, dev_uuid):
2845 return (dev_uuid in self.info['%s_refs' % dev_class.lower()])
2847 def __str__(self):
2848 return '<domain id=%s name=%s memory=%s state=%s>' % \
2849 (str(self.domid), self.info['name_label'],
2850 str(self.info['memory_dynamic_max']), DOM_STATES[self._stateGet()])
2852 __repr__ = __str__