def _find_destination(self): # TODO(johngarbutt) this retry loop should be shared attempted_hosts = [self.source] image = None if self.instance.image_ref: image = compute_utils.get_image_metadata(self.context, self.image_api, self.instance.image_ref, self.instance) request_spec = scheduler_utils.build_request_spec( self.context, image, [self.instance]) host = None while host is None: self._check_not_over_max_retries(attempted_hosts) filter_properties = {'ignore_hosts': attempted_hosts} scheduler_utils.setup_instance_group(self.context, request_spec, filter_properties) host = self.scheduler_client.select_destinations( self.context, request_spec, filter_properties)[0]['host'] try: self._check_compatible_with_source_hypervisor(host) self._call_livem_checks_on_host(host) except exception.Invalid as e: LOG.debug("Skipping host: %(host)s because: %(e)s", { "host": host, "e": e }) attempted_hosts.append(host) host = None return host
def _find_destination(self): # TODO(johngarbutt) this retry loop should be shared attempted_hosts = [self.source] image = None if self.instance.image_ref: image = compute_utils.get_image_metadata(self.context, self.image_api, self.instance.image_ref, self.instance) request_spec = scheduler_utils.build_request_spec(self.context, image, [self.instance]) host = None while host is None: self._check_not_over_max_retries(attempted_hosts) filter_properties = {'ignore_hosts': attempted_hosts} scheduler_utils.setup_instance_group(self.context, request_spec, filter_properties) host = self.scheduler_client.select_destinations(self.context, request_spec, filter_properties)[0]['host'] try: self._check_compatible_with_source_hypervisor(host) self._call_livem_checks_on_host(host) except exception.Invalid as e: LOG.debug("Skipping host: %(host)s because: %(e)s", {"host": host, "e": e}) attempted_hosts.append(host) host = None return host
def _test_find_destination_retry_hypervisor_raises(self, error): self.mox.StubOutWithMock(compute_utils, 'get_image_metadata') self.mox.StubOutWithMock(scheduler_utils, 'build_request_spec') self.mox.StubOutWithMock(scheduler_utils, 'setup_instance_group') self.mox.StubOutWithMock(self.task.scheduler_client, 'select_destinations') self.mox.StubOutWithMock(self.task, '_check_compatible_with_source_hypervisor') self.mox.StubOutWithMock(self.task, '_call_livem_checks_on_host') compute_utils.get_image_metadata(self.context, self.task.image_api, self.instance_image, self.instance).AndReturn("image") scheduler_utils.build_request_spec(self.context, mox.IgnoreArg(), mox.IgnoreArg()).AndReturn({}) scheduler_utils.setup_instance_group( self.context, {}, {'ignore_hosts': [self.instance_host]}) self.task.scheduler_client.select_destinations(self.context, mox.IgnoreArg(), mox.IgnoreArg()).AndReturn( [{'host': 'host1'}]) self.task._check_compatible_with_source_hypervisor("host1")\ .AndRaise(error) scheduler_utils.setup_instance_group( self.context, {}, {'ignore_hosts': [self.instance_host, "host1"]}) self.task.scheduler_client.select_destinations(self.context, mox.IgnoreArg(), mox.IgnoreArg()).AndReturn( [{'host': 'host2'}]) self.task._check_compatible_with_source_hypervisor("host2") self.task._call_livem_checks_on_host("host2") self.mox.ReplayAll() self.assertEqual("host2", self.task._find_destination())
def test_find_destination_retry_exceeds_max(self): self.flags(migrate_max_retries=0) self.mox.StubOutWithMock(compute_utils, 'get_image_metadata') self.mox.StubOutWithMock(scheduler_utils, 'build_request_spec') self.mox.StubOutWithMock(scheduler_utils, 'setup_instance_group') self.mox.StubOutWithMock(self.task.scheduler_client, 'select_destinations') self.mox.StubOutWithMock(self.task, '_check_compatible_with_source_hypervisor') compute_utils.get_image_metadata(self.context, self.task.image_api, self.instance_image, self.instance).AndReturn("image") scheduler_utils.build_request_spec(self.context, mox.IgnoreArg(), mox.IgnoreArg()).AndReturn({}) scheduler_utils.setup_instance_group( self.context, {}, {'ignore_hosts': [self.instance_host]}) self.task.scheduler_client.select_destinations(self.context, mox.IgnoreArg(), mox.IgnoreArg()).AndReturn( [{'host': 'host1'}]) self.task._check_compatible_with_source_hypervisor("host1")\ .AndRaise(exception.DestinationHypervisorTooOld) self.mox.ReplayAll() self.assertRaises(exception.NoValidHost, self.task._find_destination)
def test_find_destination_retry_exceeds_max(self): self.flags(migrate_max_retries=0) self.mox.StubOutWithMock(compute_utils, 'get_image_metadata') self.mox.StubOutWithMock(scheduler_utils, 'build_request_spec') self.mox.StubOutWithMock(scheduler_utils, 'setup_instance_group') self.mox.StubOutWithMock(self.task.scheduler_client, 'select_destinations') self.mox.StubOutWithMock(self.task, '_check_compatible_with_source_hypervisor') compute_utils.get_image_metadata(self.context, self.task.image_api, self.instance_image, self.instance).AndReturn("image") scheduler_utils.build_request_spec(self.context, mox.IgnoreArg(), mox.IgnoreArg()).AndReturn({}) scheduler_utils.setup_instance_group( self.context, {}, {'ignore_hosts': [self.instance_host]}) self.task.scheduler_client.select_destinations( self.context, mox.IgnoreArg(), mox.IgnoreArg()).AndReturn([{ 'host': 'host1' }]) self.task._check_compatible_with_source_hypervisor("host1")\ .AndRaise(exception.DestinationHypervisorTooOld) self.mox.ReplayAll() self.assertRaises(exception.NoValidHost, self.task._find_destination)
def test_find_destination_no_image_works(self): self.instance['image_ref'] = '' self.mox.StubOutWithMock(scheduler_utils, 'build_request_spec') self.mox.StubOutWithMock(scheduler_utils, 'setup_instance_group') self.mox.StubOutWithMock(self.task.scheduler_client, 'select_destinations') self.mox.StubOutWithMock(self.task, '_check_compatible_with_source_hypervisor') self.mox.StubOutWithMock(self.task, '_call_livem_checks_on_host') scheduler_utils.build_request_spec(self.context, None, mox.IgnoreArg()).AndReturn({}) scheduler_utils.setup_instance_group( self.context, {}, {'ignore_hosts': [self.instance_host]}) self.task.scheduler_client.select_destinations( self.context, mox.IgnoreArg(), mox.IgnoreArg()).AndReturn([{ 'host': 'host1' }]) self.task._check_compatible_with_source_hypervisor("host1") self.task._call_livem_checks_on_host("host1") self.mox.ReplayAll() self.assertEqual("host1", self.task._find_destination())
def _cold_migrate(self, context, instance, flavor, filter_properties, reservations, clean_shutdown): image_ref = instance.image_ref image = compute_utils.get_image_metadata(context, self.image_api, image_ref, instance) request_spec = scheduler_utils.build_request_spec(context, image, [instance], instance_type=flavor) quotas = objects.Quotas.from_reservations(context, reservations, instance=instance) try: scheduler_utils.setup_instance_group(context, request_spec, filter_properties) scheduler_utils.populate_retry(filter_properties, instance["uuid"]) hosts = self.scheduler_client.select_destinations(context, request_spec, filter_properties) host_state = hosts[0] except exception.NoValidHost as ex: vm_state = instance.vm_state if not vm_state: vm_state = vm_states.ACTIVE updates = {"vm_state": vm_state, "task_state": None} self._set_vm_state_and_notify(context, instance.uuid, "migrate_server", updates, ex, request_spec) quotas.rollback() # if the flavor IDs match, it's migrate; otherwise resize if flavor["id"] == instance["instance_type_id"]: msg = _("No valid host found for cold migrate") else: msg = _("No valid host found for resize") raise exception.NoValidHost(reason=msg) except exception.UnsupportedPolicyException as ex: with excutils.save_and_reraise_exception(): vm_state = instance.vm_state if not vm_state: vm_state = vm_states.ACTIVE updates = {"vm_state": vm_state, "task_state": None} self._set_vm_state_and_notify(context, instance.uuid, "migrate_server", updates, ex, request_spec) quotas.rollback() try: scheduler_utils.populate_filter_properties(filter_properties, host_state) # context is not serializable filter_properties.pop("context", None) (host, node) = (host_state["host"], host_state["nodename"]) self.compute_rpcapi.prep_resize( context, image, instance, flavor, host, reservations, request_spec=request_spec, filter_properties=filter_properties, node=node, clean_shutdown=clean_shutdown, ) except Exception as ex: with excutils.save_and_reraise_exception(): updates = {"vm_state": instance.vm_state, "task_state": None} self._set_vm_state_and_notify(context, instance.uuid, "migrate_server", updates, ex, request_spec) quotas.rollback()
def _schedule_instances(self, context, image, filter_properties, *instances): request_spec = scheduler_utils.build_request_spec(context, image, instances) scheduler_utils.setup_instance_group(context, request_spec, filter_properties) hosts = self.scheduler_client.select_destinations(context, request_spec, filter_properties) return hosts
def test_setup_instance_group_with_no_group(self, mock_ggd): mock_ggd.return_value = None spec = {'instance_properties': {'uuid': 'fake-uuid'}} filter_props = {'group_hosts': ['hostC']} scheduler_utils.setup_instance_group(self.context, spec, filter_props) mock_ggd.assert_called_once_with(self.context, 'fake-uuid', ['hostC']) self.assertNotIn('group_updated', filter_props) self.assertNotIn('group_policies', filter_props) self.assertEqual(['hostC'], filter_props['group_hosts'])
def rebuild_instance(self, context, instance, orig_image_ref, image_ref, injected_files, new_pass, orig_sys_metadata, bdms, recreate, on_shared_storage, preserve_ephemeral=False, host=None): with compute_utils.EventReporter(context, 'rebuild_server', instance.uuid): if not host: # NOTE(lcostantino): Retrieve scheduler filters for the # instance when the feature is available filter_properties = {'ignore_hosts': [instance.host]} request_spec = scheduler_utils.build_request_spec(context, image_ref, [instance]) try: scheduler_utils.setup_instance_group(context, request_spec, filter_properties) hosts = self.scheduler_client.select_destinations(context, request_spec, filter_properties) host = hosts.pop(0)['host'] except exception.NoValidHost as ex: with excutils.save_and_reraise_exception(): self._set_vm_state_and_notify(context, instance.uuid, 'rebuild_server', {'vm_state': instance.vm_state, 'task_state': None}, ex, request_spec) LOG.warning(_LW("No valid host found for rebuild"), instance=instance) except exception.UnsupportedPolicyException as ex: with excutils.save_and_reraise_exception(): self._set_vm_state_and_notify(context, instance.uuid, 'rebuild_server', {'vm_state': instance.vm_state, 'task_state': None}, ex, request_spec) LOG.warning(_LW("Server with unsupported policy " "cannot be rebuilt"), instance=instance) self.compute_rpcapi.rebuild_instance(context, instance=instance, new_pass=new_pass, injected_files=injected_files, image_ref=image_ref, orig_image_ref=orig_image_ref, orig_sys_metadata=orig_sys_metadata, bdms=bdms, recreate=recreate, on_shared_storage=on_shared_storage, preserve_ephemeral=preserve_ephemeral, host=host)
def test_setup_instance_group_in_filter_properties(self, mock_ggd): mock_ggd.return_value = scheduler_utils.GroupDetails( hosts=set(['hostA', 'hostB']), policies=['policy']) spec = {'instance_properties': {'uuid': 'fake-uuid'}} filter_props = {'group_hosts': ['hostC']} scheduler_utils.setup_instance_group(self.context, spec, filter_props) mock_ggd.assert_called_once_with(self.context, 'fake-uuid', ['hostC']) expected_filter_props = {'group_updated': True, 'group_hosts': set(['hostA', 'hostB']), 'group_policies': ['policy']} self.assertEqual(expected_filter_props, filter_props)
def test_setup_instance_group_in_filter_properties(self, mock_ggd): mock_ggd.return_value = scheduler_utils.GroupDetails( hosts=set(['hostA', 'hostB']), policies=['policy']) spec = {'instance_properties': {'uuid': 'fake-uuid'}} filter_props = {'group_hosts': ['hostC']} scheduler_utils.setup_instance_group(self.context, spec, filter_props) mock_ggd.assert_called_once_with(self.context, 'fake-uuid', ['hostC']) expected_filter_props = { 'group_updated': True, 'group_hosts': set(['hostA', 'hostB']), 'group_policies': ['policy'] } self.assertEqual(expected_filter_props, filter_props)
def test_find_destination_when_runs_out_of_hosts(self): self.mox.StubOutWithMock(compute_utils, 'get_image_metadata') self.mox.StubOutWithMock(scheduler_utils, 'build_request_spec') self.mox.StubOutWithMock(scheduler_utils, 'setup_instance_group') self.mox.StubOutWithMock(self.task.scheduler_client, 'select_destinations') compute_utils.get_image_metadata(self.context, self.task.image_api, self.instance_image, self.instance).AndReturn("image") scheduler_utils.build_request_spec(self.context, mox.IgnoreArg(), mox.IgnoreArg()).AndReturn({}) scheduler_utils.setup_instance_group( self.context, {}, {'ignore_hosts': [self.instance_host]}) self.task.scheduler_client.select_destinations( self.context, mox.IgnoreArg(), mox.IgnoreArg()).AndRaise(exception.NoValidHost(reason="")) self.mox.ReplayAll() self.assertRaises(exception.NoValidHost, self.task._find_destination)
def test_find_destination_when_runs_out_of_hosts(self): self.mox.StubOutWithMock(compute_utils, 'get_image_metadata') self.mox.StubOutWithMock(scheduler_utils, 'build_request_spec') self.mox.StubOutWithMock(scheduler_utils, 'setup_instance_group') self.mox.StubOutWithMock(self.task.scheduler_client, 'select_destinations') compute_utils.get_image_metadata(self.context, self.task.image_api, self.instance_image, self.instance).AndReturn("image") scheduler_utils.build_request_spec(self.context, mox.IgnoreArg(), mox.IgnoreArg()).AndReturn({}) scheduler_utils.setup_instance_group( self.context, {}, {'ignore_hosts': [self.instance_host]}) self.task.scheduler_client.select_destinations(self.context, mox.IgnoreArg(), mox.IgnoreArg()).AndRaise( exception.NoValidHost(reason="")) self.mox.ReplayAll() self.assertRaises(exception.NoValidHost, self.task._find_destination)
def test_find_destination_no_image_works(self): self.instance['image_ref'] = '' self.mox.StubOutWithMock(scheduler_utils, 'build_request_spec') self.mox.StubOutWithMock(scheduler_utils, 'setup_instance_group') self.mox.StubOutWithMock(self.task.scheduler_client, 'select_destinations') self.mox.StubOutWithMock(self.task, '_check_compatible_with_source_hypervisor') self.mox.StubOutWithMock(self.task, '_call_livem_checks_on_host') scheduler_utils.build_request_spec(self.context, None, mox.IgnoreArg()).AndReturn({}) scheduler_utils.setup_instance_group( self.context, {}, {'ignore_hosts': [self.instance_host]}) self.task.scheduler_client.select_destinations(self.context, mox.IgnoreArg(), mox.IgnoreArg()).AndReturn( [{'host': 'host1'}]) self.task._check_compatible_with_source_hypervisor("host1") self.task._call_livem_checks_on_host("host1") self.mox.ReplayAll() self.assertEqual("host1", self.task._find_destination())
def _test_find_destination_retry_hypervisor_raises(self, error): self.mox.StubOutWithMock(compute_utils, 'get_image_metadata') self.mox.StubOutWithMock(scheduler_utils, 'build_request_spec') self.mox.StubOutWithMock(scheduler_utils, 'setup_instance_group') self.mox.StubOutWithMock(self.task.scheduler_client, 'select_destinations') self.mox.StubOutWithMock(self.task, '_check_compatible_with_source_hypervisor') self.mox.StubOutWithMock(self.task, '_call_livem_checks_on_host') compute_utils.get_image_metadata(self.context, self.task.image_api, self.instance_image, self.instance).AndReturn("image") scheduler_utils.build_request_spec(self.context, mox.IgnoreArg(), mox.IgnoreArg()).AndReturn({}) scheduler_utils.setup_instance_group( self.context, {}, {'ignore_hosts': [self.instance_host]}) self.task.scheduler_client.select_destinations( self.context, mox.IgnoreArg(), mox.IgnoreArg()).AndReturn([{ 'host': 'host1' }]) self.task._check_compatible_with_source_hypervisor("host1")\ .AndRaise(error) scheduler_utils.setup_instance_group( self.context, {}, {'ignore_hosts': [self.instance_host, "host1"]}) self.task.scheduler_client.select_destinations( self.context, mox.IgnoreArg(), mox.IgnoreArg()).AndReturn([{ 'host': 'host2' }]) self.task._check_compatible_with_source_hypervisor("host2") self.task._call_livem_checks_on_host("host2") self.mox.ReplayAll() self.assertEqual("host2", self.task._find_destination())
def build_instances( self, context, instances, image, filter_properties, admin_password, injected_files, requested_networks, security_groups, block_device_mapping=None, legacy_bdm=True, ): # TODO(ndipanov): Remove block_device_mapping and legacy_bdm in version # 2.0 of the RPC API. request_spec = scheduler_utils.build_request_spec(context, image, instances) # TODO(danms): Remove this in version 2.0 of the RPC API if requested_networks and not isinstance(requested_networks, objects.NetworkRequestList): requested_networks = objects.NetworkRequestList( objects=[objects.NetworkRequest.from_tuple(t) for t in requested_networks] ) # TODO(melwitt): Remove this in version 2.0 of the RPC API flavor = filter_properties.get("instance_type") if flavor and not isinstance(flavor, objects.Flavor): # Code downstream may expect extra_specs to be populated since it # is receiving an object, so lookup the flavor to ensure this. flavor = objects.Flavor.get_by_id(context, flavor["id"]) filter_properties = dict(filter_properties, instance_type=flavor) try: scheduler_utils.setup_instance_group(context, request_spec, filter_properties) # check retry policy. Rather ugly use of instances[0]... # but if we've exceeded max retries... then we really only # have a single instance. scheduler_utils.populate_retry(filter_properties, instances[0].uuid) hosts = self.scheduler_client.select_destinations(context, request_spec, filter_properties) except Exception as exc: updates = {"vm_state": vm_states.ERROR, "task_state": None} for instance in instances: self._set_vm_state_and_notify(context, instance.uuid, "build_instances", updates, exc, request_spec) return for (instance, host) in itertools.izip(instances, hosts): try: instance.refresh() except (exception.InstanceNotFound, exception.InstanceInfoCacheNotFound): LOG.debug("Instance deleted during build", instance=instance) continue local_filter_props = copy.deepcopy(filter_properties) scheduler_utils.populate_filter_properties(local_filter_props, host) # The block_device_mapping passed from the api doesn't contain # instance specific information bdms = objects.BlockDeviceMappingList.get_by_instance_uuid(context, instance.uuid) self.compute_rpcapi.build_and_run_instance( context, instance=instance, host=host["host"], image=image, request_spec=request_spec, filter_properties=local_filter_props, admin_password=admin_password, injected_files=injected_files, requested_networks=requested_networks, security_groups=security_groups, block_device_mapping=bdms, node=host["nodename"], limits=host["limits"], )
def rebuild_instance( self, context, instance, orig_image_ref, image_ref, injected_files, new_pass, orig_sys_metadata, bdms, recreate, on_shared_storage, preserve_ephemeral=False, host=None, ): with compute_utils.EventReporter(context, "rebuild_server", instance.uuid): if not host: # NOTE(lcostantino): Retrieve scheduler filters for the # instance when the feature is available filter_properties = {"ignore_hosts": [instance.host]} request_spec = scheduler_utils.build_request_spec(context, image_ref, [instance]) try: scheduler_utils.setup_instance_group(context, request_spec, filter_properties) hosts = self.scheduler_client.select_destinations(context, request_spec, filter_properties) host = hosts.pop(0)["host"] except exception.NoValidHost as ex: with excutils.save_and_reraise_exception(): self._set_vm_state_and_notify( context, instance.uuid, "rebuild_server", {"vm_state": instance.vm_state, "task_state": None}, ex, request_spec, ) LOG.warning(_LW("No valid host found for rebuild"), instance=instance) except exception.UnsupportedPolicyException as ex: with excutils.save_and_reraise_exception(): self._set_vm_state_and_notify( context, instance.uuid, "rebuild_server", {"vm_state": instance.vm_state, "task_state": None}, ex, request_spec, ) LOG.warning(_LW("Server with unsupported policy " "cannot be rebuilt"), instance=instance) self.compute_rpcapi.rebuild_instance( context, instance=instance, new_pass=new_pass, injected_files=injected_files, image_ref=image_ref, orig_image_ref=orig_image_ref, orig_sys_metadata=orig_sys_metadata, bdms=bdms, recreate=recreate, on_shared_storage=on_shared_storage, preserve_ephemeral=preserve_ephemeral, host=host, )
def build_instances(self, context, instances, image, filter_properties, admin_password, injected_files, requested_networks, security_groups, block_device_mapping=None, legacy_bdm=True): # TODO(ndipanov): Remove block_device_mapping and legacy_bdm in version # 2.0 of the RPC API. request_spec = scheduler_utils.build_request_spec(context, image, instances) # TODO(danms): Remove this in version 2.0 of the RPC API if (requested_networks and not isinstance(requested_networks, objects.NetworkRequestList)): requested_networks = objects.NetworkRequestList( objects=[objects.NetworkRequest.from_tuple(t) for t in requested_networks]) # TODO(melwitt): Remove this in version 2.0 of the RPC API flavor = filter_properties.get('instance_type') if flavor and not isinstance(flavor, objects.Flavor): # Code downstream may expect extra_specs to be populated since it # is receiving an object, so lookup the flavor to ensure this. flavor = objects.Flavor.get_by_id(context, flavor['id']) filter_properties = dict(filter_properties, instance_type=flavor) try: scheduler_utils.setup_instance_group(context, request_spec, filter_properties) # check retry policy. Rather ugly use of instances[0]... # but if we've exceeded max retries... then we really only # have a single instance. scheduler_utils.populate_retry(filter_properties, instances[0].uuid) hosts = self.scheduler_client.select_destinations(context, request_spec, filter_properties) except Exception as exc: updates = {'vm_state': vm_states.ERROR, 'task_state': None} for instance in instances: self._set_vm_state_and_notify( context, instance.uuid, 'build_instances', updates, exc, request_spec) return for (instance, host) in itertools.izip(instances, hosts): try: instance.refresh() except (exception.InstanceNotFound, exception.InstanceInfoCacheNotFound): LOG.debug('Instance deleted during build', instance=instance) continue local_filter_props = copy.deepcopy(filter_properties) scheduler_utils.populate_filter_properties(local_filter_props, host) # The block_device_mapping passed from the api doesn't contain # instance specific information bdms = objects.BlockDeviceMappingList.get_by_instance_uuid( context, instance.uuid) self.compute_rpcapi.build_and_run_instance(context, instance=instance, host=host['host'], image=image, request_spec=request_spec, filter_properties=local_filter_props, admin_password=admin_password, injected_files=injected_files, requested_networks=requested_networks, security_groups=security_groups, block_device_mapping=bdms, node=host['nodename'], limits=host['limits'])
def _cold_migrate(self, context, instance, flavor, filter_properties, reservations, clean_shutdown): image_ref = instance.image_ref image = compute_utils.get_image_metadata( context, self.image_api, image_ref, instance) request_spec = scheduler_utils.build_request_spec( context, image, [instance], instance_type=flavor) quotas = objects.Quotas.from_reservations(context, reservations, instance=instance) try: scheduler_utils.setup_instance_group(context, request_spec, filter_properties) scheduler_utils.populate_retry(filter_properties, instance['uuid']) hosts = self.scheduler_client.select_destinations( context, request_spec, filter_properties) host_state = hosts[0] except exception.NoValidHost as ex: vm_state = instance.vm_state if not vm_state: vm_state = vm_states.ACTIVE updates = {'vm_state': vm_state, 'task_state': None} self._set_vm_state_and_notify(context, instance.uuid, 'migrate_server', updates, ex, request_spec) quotas.rollback() # if the flavor IDs match, it's migrate; otherwise resize if flavor['id'] == instance['instance_type_id']: msg = _("No valid host found for cold migrate") else: msg = _("No valid host found for resize") raise exception.NoValidHost(reason=msg) except exception.UnsupportedPolicyException as ex: with excutils.save_and_reraise_exception(): vm_state = instance.vm_state if not vm_state: vm_state = vm_states.ACTIVE updates = {'vm_state': vm_state, 'task_state': None} self._set_vm_state_and_notify(context, instance.uuid, 'migrate_server', updates, ex, request_spec) quotas.rollback() try: scheduler_utils.populate_filter_properties(filter_properties, host_state) # context is not serializable filter_properties.pop('context', None) (host, node) = (host_state['host'], host_state['nodename']) self.compute_rpcapi.prep_resize( context, image, instance, flavor, host, reservations, request_spec=request_spec, filter_properties=filter_properties, node=node, clean_shutdown=clean_shutdown) except Exception as ex: with excutils.save_and_reraise_exception(): updates = {'vm_state': instance.vm_state, 'task_state': None} self._set_vm_state_and_notify(context, instance.uuid, 'migrate_server', updates, ex, request_spec) quotas.rollback()