# vim: tabstop=4 shiftwidth=4 softtabstop=4 # Copyright 2010 United States Government as represented by the # Administrator of the National Aeronautics and Space Administration. # All Rights Reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); you may # not use this file except in compliance with the License. You may obtain # a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the # License for the specific language governing permissions and limitations # under the License. """ Tests For Scheduler """ import mox from nova.compute import api as compute_api from nova.compute import flavors from nova.compute import power_state from nova.compute import rpcapi as compute_rpcapi from nova.compute import task_states from nova.compute import utils as compute_utils from nova.compute import vm_states from nova.conductor import api as conductor_api from nova import context from nova import db from nova import exception from nova.image import glance from nova.openstack.common import jsonutils from nova.openstack.common.notifier import api as notifier from nova.openstack.common import rpc from nova.openstack.common.rpc import common as rpc_common from nova.scheduler import driver from nova.scheduler import manager from nova import servicegroup from nova import test from nova.tests import fake_instance_actions from nova.tests.image import fake as fake_image from nova.tests import matchers from nova.tests.scheduler import fakes from nova import utils class SchedulerManagerTestCase(test.TestCase): """Test case for scheduler manager.""" manager_cls = manager.SchedulerManager driver_cls = driver.Scheduler driver_cls_name = 'nova.scheduler.driver.Scheduler' def setUp(self): super(SchedulerManagerTestCase, self).setUp() self.flags(scheduler_driver=self.driver_cls_name) self.stubs.Set(compute_api, 'API', fakes.FakeComputeAPI) self.manager = self.manager_cls() self.context = context.RequestContext('fake_user', 'fake_project') self.topic = 'fake_topic' self.fake_args = (1, 2, 3) self.fake_kwargs = {'cat': 'meow', 'dog': 'woof'} fake_instance_actions.stub_out_action_events(self.stubs) def stub_out_client_exceptions(self): def passthru(exceptions, func, *args, **kwargs): return func(*args, **kwargs) self.stubs.Set(rpc_common, 'catch_client_exception', passthru) def test_1_correct_init(self): # Correct scheduler driver manager = self.manager self.assertTrue(isinstance(manager.driver, self.driver_cls)) def test_update_service_capabilities(self): service_name = 'fake_service' host = 'fake_host' self.mox.StubOutWithMock(self.manager.driver, 'update_service_capabilities') # Test no capabilities passes empty dictionary self.manager.driver.update_service_capabilities(service_name, host, {}) self.mox.ReplayAll() result = self.manager.update_service_capabilities(self.context, service_name=service_name, host=host, capabilities={}) self.mox.VerifyAll() self.mox.ResetAll() # Test capabilities passes correctly capabilities = {'fake_capability': 'fake_value'} self.manager.driver.update_service_capabilities( service_name, host, capabilities) self.mox.ReplayAll() result = self.manager.update_service_capabilities(self.context, service_name=service_name, host=host, capabilities=capabilities) def test_update_service_multiple_capabilities(self): service_name = 'fake_service' host = 'fake_host' self.mox.StubOutWithMock(self.manager.driver, 'update_service_capabilities') capab1 = {'fake_capability': 'fake_value1'}, capab2 = {'fake_capability': 'fake_value2'}, capab3 = None self.manager.driver.update_service_capabilities( service_name, host, capab1) self.manager.driver.update_service_capabilities( service_name, host, capab2) # None is converted to {} self.manager.driver.update_service_capabilities( service_name, host, {}) self.mox.ReplayAll() self.manager.update_service_capabilities(self.context, service_name=service_name, host=host, capabilities=[capab1, capab2, capab3]) def test_show_host_resources(self): host = 'fake_host' compute_node = {'host': host, 'compute_node': [{'vcpus': 4, 'vcpus_used': 2, 'memory_mb': 1024, 'memory_mb_used': 512, 'local_gb': 1024, 'local_gb_used': 512}]} instances = [{'project_id': 'project1', 'vcpus': 1, 'memory_mb': 128, 'root_gb': 128, 'ephemeral_gb': 0}, {'project_id': 'project1', 'vcpus': 2, 'memory_mb': 256, 'root_gb': 384, 'ephemeral_gb': 0}, {'project_id': 'project2', 'vcpus': 2, 'memory_mb': 256, 'root_gb': 256, 'ephemeral_gb': 0}] self.mox.StubOutWithMock(db, 'service_get_by_compute_host') self.mox.StubOutWithMock(db, 'instance_get_all_by_host') db.service_get_by_compute_host(self.context, host).AndReturn( compute_node) db.instance_get_all_by_host(self.context, host).AndReturn(instances) self.mox.ReplayAll() result = self.manager.show_host_resources(self.context, host) expected = {'usage': {'project1': {'memory_mb': 384, 'vcpus': 3, 'root_gb': 512, 'ephemeral_gb': 0}, 'project2': {'memory_mb': 256, 'vcpus': 2, 'root_gb': 256, 'ephemeral_gb': 0}}, 'resource': {'vcpus': 4, 'vcpus_used': 2, 'local_gb': 1024, 'local_gb_used': 512, 'memory_mb': 1024, 'memory_mb_used': 512}} self.assertThat(result, matchers.DictMatches(expected)) def _mox_schedule_method_helper(self, method_name): # Make sure the method exists that we're going to test call def stub_method(*args, **kwargs): pass setattr(self.manager.driver, method_name, stub_method) self.mox.StubOutWithMock(self.manager.driver, method_name) def test_run_instance_exception_puts_instance_in_error_state(self): fake_instance_uuid = 'fake-instance-id' inst = {"vm_state": "", "task_state": ""} self._mox_schedule_method_helper('schedule_run_instance') self.mox.StubOutWithMock(compute_utils, 'add_instance_fault_from_exc') self.mox.StubOutWithMock(db, 'instance_update_and_get_original') request_spec = {'instance_properties': inst, 'instance_uuids': [fake_instance_uuid]} self.manager.driver.schedule_run_instance(self.context, request_spec, None, None, None, None, {}).AndRaise( exception.NoValidHost(reason="")) old, new_ref = db.instance_update_and_get_original(self.context, fake_instance_uuid, {"vm_state": vm_states.ERROR, "task_state": None}).AndReturn((inst, inst)) compute_utils.add_instance_fault_from_exc(self.context, mox.IsA(conductor_api.LocalAPI), new_ref, mox.IsA(exception.NoValidHost), mox.IgnoreArg()) self.mox.ReplayAll() self.manager.run_instance(self.context, request_spec, None, None, None, None, {}) def test_live_migration_schedule_novalidhost(self): inst = {"uuid": "fake-instance-id", "vm_state": vm_states.ACTIVE, "task_state": task_states.MIGRATING, } dest = None block_migration = False disk_over_commit = False self._mox_schedule_method_helper('schedule_live_migration') self.mox.StubOutWithMock(compute_utils, 'add_instance_fault_from_exc') self.mox.StubOutWithMock(db, 'instance_update_and_get_original') self.manager.driver.schedule_live_migration(self.context, inst, dest, block_migration, disk_over_commit).AndRaise( exception.NoValidHost(reason="")) db.instance_update_and_get_original(self.context, inst["uuid"], {"vm_state": inst['vm_state'], "task_state": None, "expected_task_state": task_states.MIGRATING, }).AndReturn((inst, inst)) compute_utils.add_instance_fault_from_exc(self.context, mox.IsA(conductor_api.LocalAPI), inst, mox.IsA(exception.NoValidHost), mox.IgnoreArg()) self.mox.ReplayAll() self.stub_out_client_exceptions() self.assertRaises(exception.NoValidHost, self.manager.live_migration, self.context, inst, dest, block_migration, disk_over_commit) def test_live_migration_compute_service_notavailable(self): inst = {"uuid": "fake-instance-id", "vm_state": vm_states.ACTIVE, "task_state": task_states.MIGRATING, } dest = 'fake_host' block_migration = False disk_over_commit = False self._mox_schedule_method_helper('schedule_live_migration') self.mox.StubOutWithMock(compute_utils, 'add_instance_fault_from_exc') self.mox.StubOutWithMock(db, 'instance_update_and_get_original') self.manager.driver.schedule_live_migration(self.context, inst, dest, block_migration, disk_over_commit).AndRaise( exception.ComputeServiceUnavailable(host="src")) db.instance_update_and_get_original(self.context, inst["uuid"], {"vm_state": inst['vm_state'], "task_state": None, "expected_task_state": task_states.MIGRATING, }).AndReturn((inst, inst)) compute_utils.add_instance_fault_from_exc(self.context, mox.IsA(conductor_api.LocalAPI), inst, mox.IsA(exception.ComputeServiceUnavailable), mox.IgnoreArg()) self.mox.ReplayAll() self.stub_out_client_exceptions() self.assertRaises(exception.ComputeServiceUnavailable, self.manager.live_migration, self.context, inst, dest, block_migration, disk_over_commit) def test_prep_resize_no_valid_host_back_in_active_state(self): fake_instance_uuid = 'fake-instance-id' fake_instance = {'uuid': fake_instance_uuid} inst = {"vm_state": "", "task_state": ""} self._mox_schedule_method_helper('schedule_prep_resize') self.mox.StubOutWithMock(compute_utils, 'add_instance_fault_from_exc') self.mox.StubOutWithMock(db, 'instance_update_and_get_original') request_spec = {'instance_type': 'fake_type', 'instance_uuids': [fake_instance_uuid], 'instance_properties': {'uuid': fake_instance_uuid}} kwargs = { 'context': self.context, 'image': 'fake_image', 'request_spec': request_spec, 'filter_properties': 'fake_props', 'instance': fake_instance, 'instance_type': 'fake_type', 'reservations': list('fake_res'), } self.manager.driver.schedule_prep_resize(**kwargs).AndRaise( exception.NoValidHost(reason="")) old_ref, new_ref = db.instance_update_and_get_original(self.context, fake_instance_uuid, {"vm_state": vm_states.ACTIVE, "task_state": None}).AndReturn( (inst, inst)) compute_utils.add_instance_fault_from_exc(self.context, mox.IsA(conductor_api.LocalAPI), new_ref, mox.IsA(exception.NoValidHost), mox.IgnoreArg()) self.mox.ReplayAll() self.manager.prep_resize(**kwargs) def test_prep_resize_exception_host_in_error_state_and_raise(self): fake_instance_uuid = 'fake-instance-id' fake_instance = {'uuid': fake_instance_uuid} self._mox_schedule_method_helper('schedule_prep_resize') self.mox.StubOutWithMock(compute_utils, 'add_instance_fault_from_exc') self.mox.StubOutWithMock(db, 'instance_update_and_get_original') request_spec = {'instance_properties': {'uuid': fake_instance_uuid}} kwargs = { 'context': self.context, 'image': 'fake_image', 'request_spec': request_spec, 'filter_properties': 'fake_props', 'instance': fake_instance, 'instance_type': 'fake_type', 'reservations': list('fake_res'), } self.manager.driver.schedule_prep_resize(**kwargs).AndRaise( test.TestingException('something happened')) inst = { "vm_state": "", "task_state": "", } old_ref, new_ref = db.instance_update_and_get_original(self.context, fake_instance_uuid, {"vm_state": vm_states.ERROR, "task_state": None}).AndReturn((inst, inst)) compute_utils.add_instance_fault_from_exc(self.context, mox.IsA(conductor_api.LocalAPI), new_ref, mox.IsA(test.TestingException), mox.IgnoreArg()) self.mox.ReplayAll() self.assertRaises(test.TestingException, self.manager.prep_resize, **kwargs) def test_set_vm_state_and_notify_adds_instance_fault(self): request = {'instance_properties': {'uuid': 'fake-uuid'}} updates = {'vm_state': 'foo'} fake_inst = {'uuid': 'fake-uuid'} self.mox.StubOutWithMock(db, 'instance_update_and_get_original') self.mox.StubOutWithMock(db, 'instance_fault_create') self.mox.StubOutWithMock(notifier, 'notify') db.instance_update_and_get_original(self.context, 'fake-uuid', updates).AndReturn((None, fake_inst)) db.instance_fault_create(self.context, mox.IgnoreArg()) notifier.notify(self.context, mox.IgnoreArg(), 'scheduler.foo', notifier.ERROR, mox.IgnoreArg()) self.mox.ReplayAll() self.manager._set_vm_state_and_notify('foo', {'vm_state': 'foo'}, self.context, None, request) class SchedulerTestCase(test.TestCase): """Test case for base scheduler driver class.""" # So we can subclass this test and re-use tests if we need. driver_cls = driver.Scheduler def setUp(self): super(SchedulerTestCase, self).setUp() self.stubs.Set(compute_api, 'API', fakes.FakeComputeAPI) def fake_show(meh, context, id): if id: return {'id': id, 'min_disk': None, 'min_ram': None, 'name': 'fake_name', 'status': 'active', 'properties': {'kernel_id': 'fake_kernel_id', 'ramdisk_id': 'fake_ramdisk_id', 'something_else': 'meow'}} else: raise exception.ImageNotFound(image_id=id) fake_image.stub_out_image_service(self.stubs) self.stubs.Set(fake_image._FakeImageService, 'show', fake_show) self.image_service = glance.get_default_image_service() self.driver = self.driver_cls() self.context = context.RequestContext('fake_user', 'fake_project') self.topic = 'fake_topic' self.servicegroup_api = servicegroup.API() def test_update_service_capabilities(self): service_name = 'fake_service' host = 'fake_host' self.mox.StubOutWithMock(self.driver.host_manager, 'update_service_capabilities') capabilities = {'fake_capability': 'fake_value'} self.driver.host_manager.update_service_capabilities( service_name, host, capabilities) self.mox.ReplayAll() result = self.driver.update_service_capabilities(service_name, host, capabilities) def test_hosts_up(self): service1 = {'host': 'host1'} service2 = {'host': 'host2'} services = [service1, service2] self.mox.StubOutWithMock(db, 'service_get_all_by_topic') self.mox.StubOutWithMock(servicegroup.API, 'service_is_up') db.service_get_all_by_topic(self.context, self.topic).AndReturn(services) self.servicegroup_api.service_is_up(service1).AndReturn(False) self.servicegroup_api.service_is_up(service2).AndReturn(True) self.mox.ReplayAll() result = self.driver.hosts_up(self.context, self.topic) self.assertEqual(result, ['host2']) def _live_migration_instance(self): inst_type = flavors.get_instance_type(1) # NOTE(danms): we have _got_ to stop doing this! inst_type['memory_mb'] = 1024 sys_meta = utils.dict_to_metadata( flavors.save_instance_type_info({}, inst_type)) return {'id': 31337, 'uuid': 'fake_uuid', 'name': 'fake-instance', 'host': 'fake_host1', 'power_state': power_state.RUNNING, 'memory_mb': 1024, 'root_gb': 1024, 'ephemeral_gb': 0, 'vm_state': '', 'task_state': '', 'instance_type_id': inst_type['id'], 'image_ref': 'fake-image-ref', 'system_metadata': sys_meta} def test_live_migration_basic(self): # Test basic schedule_live_migration functionality. self.mox.StubOutWithMock(self.driver, '_live_migration_src_check') self.mox.StubOutWithMock(self.driver, '_live_migration_dest_check') self.mox.StubOutWithMock(self.driver, '_live_migration_common_check') self.mox.StubOutWithMock(self.driver.compute_rpcapi, 'check_can_live_migrate_destination') self.mox.StubOutWithMock(self.driver.compute_rpcapi, 'live_migration') dest = 'fake_host2' block_migration = False disk_over_commit = False instance = jsonutils.to_primitive(self._live_migration_instance()) self.driver._live_migration_src_check(self.context, instance) self.driver._live_migration_dest_check(self.context, instance, dest).AndReturn(dest) self.driver._live_migration_common_check(self.context, instance, dest) self.driver.compute_rpcapi.check_can_live_migrate_destination( self.context, instance, dest, block_migration, disk_over_commit).AndReturn({}) self.driver.compute_rpcapi.live_migration(self.context, host=instance['host'], instance=instance, dest=dest, block_migration=block_migration, migrate_data={}) self.mox.ReplayAll() self.driver.schedule_live_migration(self.context, instance=instance, dest=dest, block_migration=block_migration, disk_over_commit=disk_over_commit) def test_live_migration_all_checks_pass(self): # Test live migration when all checks pass. self.mox.StubOutWithMock(servicegroup.API, 'service_is_up') self.mox.StubOutWithMock(db, 'service_get_by_compute_host') self.mox.StubOutWithMock(rpc, 'call') self.mox.StubOutWithMock(self.driver.compute_rpcapi, 'live_migration') dest = 'fake_host2' block_migration = True disk_over_commit = True instance = jsonutils.to_primitive(self._live_migration_instance()) # Source checks db.service_get_by_compute_host(self.context, instance['host']).AndReturn('fake_service2') self.servicegroup_api.service_is_up('fake_service2').AndReturn(True) # Destination checks (compute is up, enough memory, disk) db.service_get_by_compute_host(self.context, dest).AndReturn('fake_service3') self.servicegroup_api.service_is_up('fake_service3').AndReturn(True) # assert_compute_node_has_enough_memory() db.service_get_by_compute_host(self.context, dest).AndReturn( {'compute_node': [{'memory_mb': 2048, 'free_disk_gb': 512, 'local_gb_used': 512, 'free_ram_mb': 1280, 'local_gb': 1024, 'vcpus': 4, 'vcpus_used': 2, 'updated_at': None, 'hypervisor_version': 1}]}) # Common checks (same hypervisor, etc) db.service_get_by_compute_host(self.context, dest).AndReturn( {'compute_node': [{'hypervisor_type': 'xen', 'hypervisor_version': 1}]}) db.service_get_by_compute_host(self.context, instance['host']).AndReturn( {'compute_node': [{'hypervisor_type': 'xen', 'hypervisor_version': 1, 'cpu_info': 'fake_cpu_info'}]}) rpc.call(self.context, "compute.fake_host2", {"method": 'check_can_live_migrate_destination', "namespace": None, "args": {'instance': instance, 'block_migration': block_migration, 'disk_over_commit': disk_over_commit}, "version": compute_rpcapi.ComputeAPI.BASE_RPC_API_VERSION}, None).AndReturn({}) self.driver.compute_rpcapi.live_migration(self.context, host=instance['host'], instance=instance, dest=dest, block_migration=block_migration, migrate_data={}) self.mox.ReplayAll() result = self.driver.schedule_live_migration(self.context, instance=instance, dest=dest, block_migration=block_migration, disk_over_commit=disk_over_commit) self.assertEqual(result, None) def test_live_migration_instance_not_running(self): # The instance given by instance_id is not running. dest = 'fake_host2' block_migration = False disk_over_commit = False instance = self._live_migration_instance() instance['power_state'] = power_state.NOSTATE self.assertRaises(exception.InstanceNotRunning, self.driver.schedule_live_migration, self.context, instance=instance, dest=dest, block_migration=block_migration, disk_over_commit=disk_over_commit) def test_live_migration_compute_src_not_exist(self): # Raise exception when src compute node is does not exist. self.mox.StubOutWithMock(servicegroup.API, 'service_is_up') self.mox.StubOutWithMock(db, 'service_get_by_compute_host') dest = 'fake_host2' block_migration = False disk_over_commit = False instance = self._live_migration_instance() # Compute down db.service_get_by_compute_host(self.context, instance['host']).AndRaise( exception.ComputeHostNotFound(host='fake')) self.mox.ReplayAll() self.assertRaises(exception.ComputeServiceUnavailable, self.driver.schedule_live_migration, self.context, instance=instance, dest=dest, block_migration=block_migration, disk_over_commit=disk_over_commit) def test_live_migration_compute_src_not_alive(self): # Raise exception when src compute node is not alive. self.mox.StubOutWithMock(servicegroup.API, 'service_is_up') self.mox.StubOutWithMock(db, 'service_get_by_compute_host') dest = 'fake_host2' block_migration = False disk_over_commit = False instance = self._live_migration_instance() # Compute down db.service_get_by_compute_host(self.context, instance['host']).AndReturn('fake_service2') self.servicegroup_api.service_is_up('fake_service2').AndReturn(False) self.mox.ReplayAll() self.assertRaises(exception.ComputeServiceUnavailable, self.driver.schedule_live_migration, self.context, instance=instance, dest=dest, block_migration=block_migration, disk_over_commit=disk_over_commit) def test_live_migration_compute_dest_not_exist(self): # Raise exception when dest compute node does not exist. self.mox.StubOutWithMock(self.driver, '_live_migration_src_check') self.mox.StubOutWithMock(db, 'service_get_by_compute_host') dest = 'fake_host2' block_migration = False disk_over_commit = False instance = self._live_migration_instance() self.driver._live_migration_src_check(self.context, instance) # Compute down db.service_get_by_compute_host(self.context, dest).AndRaise(exception.NotFound()) self.mox.ReplayAll() self.assertRaises(exception.ComputeServiceUnavailable, self.driver.schedule_live_migration, self.context, instance=instance, dest=dest, block_migration=block_migration, disk_over_commit=disk_over_commit) def test_live_migration_compute_dest_not_alive(self): # Raise exception when dest compute node is not alive. self.mox.StubOutWithMock(self.driver, '_live_migration_src_check') self.mox.StubOutWithMock(db, 'service_get_by_compute_host') self.mox.StubOutWithMock(servicegroup.API, 'service_is_up') dest = 'fake_host2' block_migration = False disk_over_commit = False instance = self._live_migration_instance() self.driver._live_migration_src_check(self.context, instance) db.service_get_by_compute_host(self.context, dest).AndReturn('fake_service3') # Compute is down self.servicegroup_api.service_is_up('fake_service3').AndReturn(False) self.mox.ReplayAll() self.assertRaises(exception.ComputeServiceUnavailable, self.driver.schedule_live_migration, self.context, instance=instance, dest=dest, block_migration=block_migration, disk_over_commit=disk_over_commit) def test_live_migration_dest_check_service_same_host(self): # Confirms exception raises in case dest and src is same host. self.mox.StubOutWithMock(self.driver, '_live_migration_src_check') block_migration = False instance = self._live_migration_instance() # make dest same as src dest = instance['host'] self.driver._live_migration_src_check(self.context, instance) self.mox.ReplayAll() self.assertRaises(exception.UnableToMigrateToSelf, self.driver.schedule_live_migration, self.context, instance=instance, dest=dest, block_migration=block_migration, disk_over_commit=False) def test_live_migration_dest_check_service_lack_memory(self): # Confirms exception raises when dest doesn't have enough memory. # Flag needed to make FilterScheduler test hit memory limit since the # default for it is to allow memory overcommit by a factor of 1.5. self.flags(ram_allocation_ratio=1.0) self.mox.StubOutWithMock(self.driver, '_live_migration_src_check') self.mox.StubOutWithMock(db, 'service_get_by_compute_host') self.mox.StubOutWithMock(servicegroup.API, 'service_is_up') self.mox.StubOutWithMock(self.driver, '_get_compute_info') dest = 'fake_host2' block_migration = False disk_over_commit = False instance = self._live_migration_instance() self.driver._live_migration_src_check(self.context, instance) db.service_get_by_compute_host(self.context, dest).AndReturn('fake_service3') self.servicegroup_api.service_is_up('fake_service3').AndReturn(True) self.driver._get_compute_info(self.context, dest).AndReturn( {'memory_mb': 2048, 'free_disk_gb': 512, 'local_gb_used': 512, 'free_ram_mb': 512, 'local_gb': 1024, 'vcpus': 4, 'vcpus_used': 2, 'updated_at': None}) self.mox.ReplayAll() self.assertRaises(exception.MigrationError, self.driver.schedule_live_migration, self.context, instance=instance, dest=dest, block_migration=block_migration, disk_over_commit=disk_over_commit) def test_live_migration_different_hypervisor_type_raises(self): # Confirm live_migration to hypervisor of different type raises. self.mox.StubOutWithMock(self.driver, '_live_migration_src_check') self.mox.StubOutWithMock(self.driver, '_live_migration_dest_check') self.mox.StubOutWithMock(rpc, 'queue_get_for') self.mox.StubOutWithMock(rpc, 'call') self.mox.StubOutWithMock(rpc, 'cast') self.mox.StubOutWithMock(db, 'service_get_by_compute_host') dest = 'fake_host2' block_migration = False disk_over_commit = False instance = self._live_migration_instance() self.driver._live_migration_src_check(self.context, instance) self.driver._live_migration_dest_check(self.context, instance, dest).AndReturn(dest) db.service_get_by_compute_host(self.context, dest).AndReturn( {'compute_node': [{'hypervisor_type': 'xen', 'hypervisor_version': 1}]}) db.service_get_by_compute_host(self.context, instance['host']).AndReturn( {'compute_node': [{'hypervisor_type': 'not-xen', 'hypervisor_version': 1}]}) self.mox.ReplayAll() self.assertRaises(exception.InvalidHypervisorType, self.driver.schedule_live_migration, self.context, instance=instance, dest=dest, block_migration=block_migration, disk_over_commit=disk_over_commit) def test_live_migration_dest_hypervisor_version_older_raises(self): # Confirm live migration to older hypervisor raises. self.mox.StubOutWithMock(self.driver, '_live_migration_src_check') self.mox.StubOutWithMock(self.driver, '_live_migration_dest_check') self.mox.StubOutWithMock(rpc, 'queue_get_for') self.mox.StubOutWithMock(rpc, 'call') self.mox.StubOutWithMock(rpc, 'cast') self.mox.StubOutWithMock(db, 'service_get_by_compute_host') dest = 'fake_host2' block_migration = False disk_over_commit = False instance = self._live_migration_instance() self.driver._live_migration_src_check(self.context, instance) self.driver._live_migration_dest_check(self.context, instance, dest).AndReturn(dest) db.service_get_by_compute_host(self.context, dest).AndReturn( {'compute_node': [{'hypervisor_type': 'xen', 'hypervisor_version': 1}]}) db.service_get_by_compute_host(self.context, instance['host']).AndReturn( {'compute_node': [{'hypervisor_type': 'xen', 'hypervisor_version': 2}]}) self.mox.ReplayAll() self.assertRaises(exception.DestinationHypervisorTooOld, self.driver.schedule_live_migration, self.context, instance=instance, dest=dest, block_migration=block_migration, disk_over_commit=disk_over_commit) def test_live_migration_dest_check_auto_set_host(self): instance = self._live_migration_instance() # Confirm dest is picked by scheduler if not set. self.mox.StubOutWithMock(self.driver, 'select_hosts') self.mox.StubOutWithMock(flavors, 'extract_instance_type') request_spec = {'instance_properties': instance, 'instance_type': {}, 'instance_uuids': [instance['uuid']], 'image': self.image_service.show(self.context, instance['image_ref']) } ignore_hosts = [instance['host']] filter_properties = {'ignore_hosts': ignore_hosts} flavors.extract_instance_type(instance).AndReturn({}) self.driver.select_hosts(self.context, request_spec, filter_properties).AndReturn(['fake_host2']) self.mox.ReplayAll() result = self.driver._live_migration_dest_check(self.context, instance, None, ignore_hosts) self.assertEqual('fake_host2', result) def test_live_migration_dest_check_no_image(self): instance = self._live_migration_instance() instance['image_ref'] = '' # Confirm dest is picked by scheduler if not set. self.mox.StubOutWithMock(self.driver, 'select_hosts') self.mox.StubOutWithMock(flavors, 'extract_instance_type') request_spec = {'instance_properties': instance, 'instance_type': {}, 'instance_uuids': [instance['uuid']], 'image': None } ignore_hosts = [instance['host']] filter_properties = {'ignore_hosts': ignore_hosts} flavors.extract_instance_type(instance).AndReturn({}) self.driver.select_hosts(self.context, request_spec, filter_properties).AndReturn(['fake_host2']) self.mox.ReplayAll() result = self.driver._live_migration_dest_check(self.context, instance, None, ignore_hosts) self.assertEqual('fake_host2', result) def test_live_migration_auto_set_dest(self): instance = self._live_migration_instance() # Confirm scheduler picks target host if none given. self.mox.StubOutWithMock(flavors, 'extract_instance_type') self.mox.StubOutWithMock(self.driver, '_live_migration_src_check') self.mox.StubOutWithMock(self.driver, 'select_hosts') self.mox.StubOutWithMock(self.driver, '_live_migration_common_check') self.mox.StubOutWithMock(rpc, 'call') self.mox.StubOutWithMock(self.driver.compute_rpcapi, 'live_migration') dest = None block_migration = False disk_over_commit = False request_spec = {'instance_properties': instance, 'instance_type': {}, 'instance_uuids': [instance['uuid']], 'image': self.image_service.show(self.context, instance['image_ref']) } self.driver._live_migration_src_check(self.context, instance) flavors.extract_instance_type( instance).MultipleTimes().AndReturn({}) # First selected host raises exception.InvalidHypervisorType self.driver.select_hosts(self.context, request_spec, {'ignore_hosts': [instance['host']]}).AndReturn(['fake_host2']) self.driver._live_migration_common_check(self.context, instance, 'fake_host2').AndRaise(exception.InvalidHypervisorType()) # Second selected host raises exception.InvalidCPUInfo self.driver.select_hosts(self.context, request_spec, {'ignore_hosts': [instance['host'], 'fake_host2']}).AndReturn(['fake_host3']) self.driver._live_migration_common_check(self.context, instance, 'fake_host3') rpc.call(self.context, "compute.fake_host3", {"method": 'check_can_live_migrate_destination', "namespace": None, "args": {'instance': instance, 'block_migration': block_migration, 'disk_over_commit': disk_over_commit}, "version": compute_rpcapi.ComputeAPI.BASE_RPC_API_VERSION}, None).AndRaise(exception.InvalidCPUInfo(reason="")) # Third selected host pass all checks self.driver.select_hosts(self.context, request_spec, {'ignore_hosts': [instance['host'], 'fake_host2', 'fake_host3']}).AndReturn(['fake_host4']) self.driver._live_migration_common_check(self.context, instance, 'fake_host4') rpc.call(self.context, "compute.fake_host4", {"method": 'check_can_live_migrate_destination', "namespace": None, "args": {'instance': instance, 'block_migration': block_migration, 'disk_over_commit': disk_over_commit}, "version": compute_rpcapi.ComputeAPI.BASE_RPC_API_VERSION}, None).AndReturn({}) self.driver.compute_rpcapi.live_migration(self.context, host=instance['host'], instance=instance, dest='fake_host4', block_migration=block_migration, migrate_data={}) self.mox.ReplayAll() result = self.driver.schedule_live_migration(self.context, instance=instance, dest=dest, block_migration=block_migration, disk_over_commit=disk_over_commit) self.assertEqual(result, None) def test_handle_schedule_error_adds_instance_fault(self): instance = {'uuid': 'fake-uuid'} self.mox.StubOutWithMock(db, 'instance_update_and_get_original') self.mox.StubOutWithMock(db, 'instance_fault_create') self.mox.StubOutWithMock(notifier, 'notify') db.instance_update_and_get_original(self.context, instance['uuid'], mox.IgnoreArg()).AndReturn( (None, instance)) db.instance_fault_create(self.context, mox.IgnoreArg()) notifier.notify(self.context, mox.IgnoreArg(), 'scheduler.run_instance', notifier.ERROR, mox.IgnoreArg()) self.mox.ReplayAll() driver.handle_schedule_error(self.context, exception.NoValidHost('test'), instance['uuid'], {}) class SchedulerDriverBaseTestCase(SchedulerTestCase): """Test cases for base scheduler driver class methods that can't will fail if the driver is changed""" def test_unimplemented_schedule_run_instance(self): fake_args = (1, 2, 3) fake_kwargs = {'cat': 'meow'} fake_request_spec = {'instance_properties': {'uuid': 'uuid'}} self.assertRaises(NotImplementedError, self.driver.schedule_run_instance, self.context, fake_request_spec, None, None, None, None, None) def test_unimplemented_schedule_prep_resize(self): fake_args = (1, 2, 3) fake_kwargs = {'cat': 'meow'} fake_request_spec = {'instance_properties': {'uuid': 'uuid'}} self.assertRaises(NotImplementedError, self.driver.schedule_prep_resize, self.context, {}, fake_request_spec, {}, {}, {}, None) class SchedulerDriverModuleTestCase(test.TestCase): """Test case for scheduler driver module methods.""" def setUp(self): super(SchedulerDriverModuleTestCase, self).setUp() self.context = context.RequestContext('fake_user', 'fake_project') def test_encode_instance(self): instance = {'id': 31337, 'test_arg': 'meow'} result = driver.encode_instance(instance, True) expected = {'id': instance['id'], '_is_precooked': False} self.assertThat(result, matchers.DictMatches(expected)) # Orig dict not changed self.assertNotEqual(result, instance) result = driver.encode_instance(instance, False) expected = {} expected.update(instance) expected['_is_precooked'] = True self.assertThat(result, matchers.DictMatches(expected)) # Orig dict not changed self.assertNotEqual(result, instance)