def _startUnderlyingMigration(self, startTime):
if self.hibernating:
hooks.before_vm_hibernate(self._vm._dom.XMLDesc(0), self._vm.conf)
try:
self._vm._vmStats.pause()
fname = self._vm.cif.prepareVolumePath(self._dst)
try:
self._vm._dom.save(fname)
finally:
self._vm.cif.teardownVolumePath(self._dst)
except Exception:
self._vm._vmStats.cont()
raise
else:
for dev in self._vm._customDevices():
hooks.before_device_migrate_source(dev._deviceXML,
self._vm.conf, dev.custom)
hooks.before_vm_migrate_source(self._vm._dom.XMLDesc(0),
self._vm.conf)
# Do not measure the time spent for creating the VM on the
# destination. In some cases some expensive operations can cause
# the migration to get cancelled right after the transfer started.
destCreateStartTime = time.time()
result = self._destServer.migrationCreate(self._machineParams)
destCreationTime = time.time() - destCreateStartTime
startTime += destCreationTime
self.log.info('Creation of destination VM took: %d seconds',
destCreationTime)
if result['status']['code']:
self.status = result
raise RuntimeError('migration destination error: ' +
result['status']['message'])
if config.getboolean('vars', 'ssl'):
transport = 'tls'
else:
transport = 'tcp'
duri = 'qemu+%s://%s/system' % (transport, self.remoteHost)
if self._vm.conf['_migrationParams']['dstqemu']:
muri = 'tcp://%s' % \
self._vm.conf['_migrationParams']['dstqemu']
else:
muri = 'tcp://%s' % self.remoteHost
self._vm.log.info('starting migration to %s '
'with miguri %s', duri, muri)
downtimeThread = DowntimeThread(self._vm, int(self._downtime))
self._monitorThread = MonitorThread(self._vm, startTime)
with utils.running(downtimeThread):
with utils.running(self._monitorThread):
# we need to support python 2.6, so two nested with-s.
self._perform_migration(duri, muri)
self.log.info("migration took %d seconds to complete",
(time.time() - startTime) + destCreationTime)
def _startUnderlyingMigration(self, startTime):
if self.hibernating:
hooks.before_vm_hibernate(self._vm._dom.XMLDesc(0), self._vm.conf)
try:
self._vm._vmStats.pause()
fname = self._vm.cif.prepareVolumePath(self._dst)
try:
self._vm._dom.save(fname)
finally:
self._vm.cif.teardownVolumePath(self._dst)
except Exception:
self._vm._vmStats.cont()
raise
else:
for dev in self._vm._customDevices():
hooks.before_device_migrate_source(
dev._deviceXML, self._vm.conf, dev.custom)
hooks.before_vm_migrate_source(self._vm._dom.XMLDesc(0),
self._vm.conf)
# Do not measure the time spent for creating the VM on the
# destination. In some cases some expensive operations can cause
# the migration to get cancelled right after the transfer started.
destCreateStartTime = time.time()
result = self._destServer.migrationCreate(self._machineParams)
destCreationTime = time.time() - destCreateStartTime
startTime += destCreationTime
self.log.info('Creation of destination VM took: %d seconds',
destCreationTime)
if result['status']['code']:
self.status = result
raise RuntimeError('migration destination error: ' +
result['status']['message'])
if config.getboolean('vars', 'ssl'):
transport = 'tls'
else:
transport = 'tcp'
duri = 'qemu+%s://%s/system' % (transport, self.remoteHost)
if self._vm.conf['_migrationParams']['dstqemu']:
muri = 'tcp://%s' % \
self._vm.conf['_migrationParams']['dstqemu']
else:
muri = 'tcp://%s' % self.remoteHost
self._vm.log.info('starting migration to %s '
'with miguri %s', duri, muri)
downtimeThread = DowntimeThread(self._vm, int(self._downtime))
self._monitorThread = MonitorThread(self._vm, startTime)
with utils.running(downtimeThread):
with utils.running(self._monitorThread):
# we need to support python 2.6, so two nested with-s.
self._perform_migration(duri, muri)
self.log.info("migration took %d seconds to complete",
(time.time() - startTime) + destCreationTime)
def _startUnderlyingMigration(self, startTime):
if self.hibernating:
hooks.before_vm_hibernate(self._vm._dom.XMLDesc(0), self._vm.conf)
try:
self._vm._vmStats.pause()
fname = self._vm.cif.prepareVolumePath(self._dst)
try:
self._vm._dom.save(fname)
finally:
self._vm.cif.teardownVolumePath(self._dst)
except Exception:
self._vm._vmStats.cont()
raise
else:
for dev in self._vm._customDevices():
hooks.before_device_migrate_source(
dev._deviceXML, self._vm.conf, dev.custom)
hooks.before_vm_migrate_source(self._vm._dom.XMLDesc(0),
self._vm.conf)
response = self.destServer.migrationCreate(self._machineParams)
if response['status']['code']:
self.status = response
raise RuntimeError('migration destination error: ' +
response['status']['message'])
if config.getboolean('vars', 'ssl'):
transport = 'tls'
else:
transport = 'tcp'
duri = 'qemu+%s://%s/system' % (transport, self.remoteHost)
if self._vm.conf['_migrationParams']['dstqemu']:
muri = 'tcp://%s' % \
self._vm.conf['_migrationParams']['dstqemu']
else:
muri = 'tcp://%s' % self.remoteHost
self._vm.log.debug('starting migration to %s '
'with miguri %s', duri, muri)
t = DowntimeThread(self._vm, int(self._downtime))
self._monitorThread = MonitorThread(self._vm, startTime)
with utils.running(self._monitorThread):
try:
self._perform_migration(duri, muri)
finally:
t.cancel()
def _startUnderlyingMigration(self, startTime):
if self._mode == 'file':
hooks.before_vm_hibernate(self._vm._dom.XMLDesc(0), self._vm.conf)
try:
self._vm._vmStats.pause()
fname = self._vm.cif.prepareVolumePath(self._dst)
try:
self._vm._dom.save(fname)
finally:
self._vm.cif.teardownVolumePath(self._dst)
except Exception:
self._vm._vmStats.cont()
raise
else:
for dev in self._vm._customDevices():
hooks.before_device_migrate_source(
dev._deviceXML, self._vm.conf, dev.custom)
hooks.before_vm_migrate_source(self._vm._dom.XMLDesc(0),
self._vm.conf)
response = self.destServer.migrationCreate(self._machineParams)
if response['status']['code']:
self.status = response
raise RuntimeError('migration destination error: ' +
response['status']['message'])
if config.getboolean('vars', 'ssl'):
transport = 'tls'
else:
transport = 'tcp'
duri = 'qemu+%s://%s/system' % (transport, self.remoteHost)
if self._vm.conf['_migrationParams']['dstqemu']:
muri = 'tcp://%s' % \
self._vm.conf['_migrationParams']['dstqemu']
else:
muri = 'tcp://%s' % self.remoteHost
self._vm.log.debug('starting migration to %s '
'with miguri %s', duri, muri)
t = DowntimeThread(self._vm, int(self._downtime))
self._monitorThread = MonitorThread(self._vm, startTime)
self._monitorThread.start()
try:
if self._vm.hasSpice and self._vm.conf.get('clientIp'):
SPICE_MIGRATION_HANDOVER_TIME = 120
self._vm._reviveTicket(SPICE_MIGRATION_HANDOVER_TIME)
maxBandwidth = config.getint('vars', 'migration_max_bandwidth')
# FIXME: there still a race here with libvirt,
# if we call stop() and libvirt migrateToURI2 didn't start
# we may return migration stop but it will start at libvirt
# side
self._preparingMigrationEvt = False
if not self._migrationCanceledEvt:
self._vm._dom.migrateToURI2(
duri, muri, None,
libvirt.VIR_MIGRATE_LIVE |
libvirt.VIR_MIGRATE_PEER2PEER |
(libvirt.VIR_MIGRATE_TUNNELLED if
self._tunneled else 0) |
(libvirt.VIR_MIGRATE_ABORT_ON_ERROR if
self._abortOnError else 0),
None, maxBandwidth)
else:
self._raiseAbortError()
finally:
t.cancel()
self._monitorThread.stop()
def _startUnderlyingMigration(self, startTime):
if self._mode == 'file':
hooks.before_vm_hibernate(self._vm._dom.XMLDesc(0), self._vm.conf)
try:
self._vm._vmStats.pause()
fname = self._vm.cif.prepareVolumePath(self._dst)
try:
self._vm._dom.save(fname)
finally:
self._vm.cif.teardownVolumePath(self._dst)
except Exception:
self._vm._vmStats.cont()
raise
else:
for dev in self._vm._customDevices():
hooks.before_device_migrate_source(
dev._deviceXML, self._vm.conf, dev.custom)
hooks.before_vm_migrate_source(self._vm._dom.XMLDesc(0),
self._vm.conf)
response = self.destServer.migrationCreate(self._machineParams)
if response['status']['code']:
self.status = response
raise RuntimeError('migration destination error: ' +
response['status']['message'])
if config.getboolean('vars', 'ssl'):
transport = 'tls'
else:
transport = 'tcp'
duri = 'qemu+%s://%s/system' % (transport, self.remoteHost)
if self._vm.conf['_migrationParams']['dstqemu']:
muri = 'tcp://%s' % \
self._vm.conf['_migrationParams']['dstqemu']
else:
muri = 'tcp://%s' % self.remoteHost
self._vm.log.debug('starting migration to %s '
'with miguri %s', duri, muri)
t = DowntimeThread(self._vm, int(self._downtime))
if MonitorThread._MIGRATION_MONITOR_INTERVAL:
self._monitorThread = MonitorThread(self._vm, startTime)
self._monitorThread.start()
try:
if ('qxl' in self._vm.conf['display'] and
self._vm.conf.get('clientIp')):
SPICE_MIGRATION_HANDOVER_TIME = 120
self._vm._reviveTicket(SPICE_MIGRATION_HANDOVER_TIME)
maxBandwidth = config.getint('vars', 'migration_max_bandwidth')
# FIXME: there still a race here with libvirt,
# if we call stop() and libvirt migrateToURI2 didn't start
# we may return migration stop but it will start at libvirt
# side
self._preparingMigrationEvt = False
if not self._migrationCanceledEvt:
self._vm._dom.migrateToURI2(
duri, muri, None,
libvirt.VIR_MIGRATE_LIVE |
libvirt.VIR_MIGRATE_PEER2PEER |
(libvirt.VIR_MIGRATE_TUNNELLED if
self._tunneled else 0) |
(libvirt.VIR_MIGRATE_ABORT_ON_ERROR if
self._abortOnError else 0),
None, maxBandwidth)
else:
self._raiseAbortError()
finally:
t.cancel()
if MonitorThread._MIGRATION_MONITOR_INTERVAL:
self._monitorThread.stop()
