# Copyright 2012 OpenStack Foundation # 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. import testtools from tempest.api.compute import base from tempest.common import waiters from tempest import config from tempest import test CONF = config.CONF class LiveBlockMigrationTestJSON(base.BaseV2ComputeAdminTest): _host_key = 'OS-EXT-SRV-ATTR:host' @classmethod def skip_checks(cls): super(LiveBlockMigrationTestJSON, cls).skip_checks() if not CONF.compute_feature_enabled.live_migration: skip_msg = ("%s skipped as live-migration is " "not available" % cls.__name__) raise cls.skipException(skip_msg) if CONF.compute.min_compute_nodes < 2: raise cls.skipException( "Less than 2 compute nodes, skipping migration test.") @classmethod def setup_clients(cls): super(LiveBlockMigrationTestJSON, cls).setup_clients() cls.admin_hosts_client = cls.os_adm.hosts_client cls.admin_servers_client = cls.os_adm.servers_client cls.admin_migration_client = cls.os_adm.migrations_client @classmethod def _get_compute_hostnames(cls): body = cls.admin_hosts_client.list_hosts()['hosts'] return [ host_record['host_name'] for host_record in body if host_record['service'] == 'compute' ] def _get_server_details(self, server_id): body = self.admin_servers_client.show_server(server_id)['server'] return body def _get_host_for_server(self, server_id): return self._get_server_details(server_id)[self._host_key] def _migrate_server_to(self, server_id, dest_host, volume_backed): block_migration = (CONF.compute_feature_enabled. block_migration_for_live_migration and not volume_backed) body = self.admin_servers_client.live_migrate_server( server_id, host=dest_host, block_migration=block_migration, disk_over_commit=False) return body def _get_host_other_than(self, host): for target_host in self._get_compute_hostnames(): if host != target_host: return target_host def _get_server_status(self, server_id): return self._get_server_details(server_id)['status'] def _volume_clean_up(self, server_id, volume_id): body = self.volumes_client.show_volume(volume_id)['volume'] if body['status'] == 'in-use': self.servers_client.detach_volume(server_id, volume_id) self.volumes_client.wait_for_volume_status(volume_id, 'available') self.volumes_client.delete_volume(volume_id) def _test_live_migration(self, state='ACTIVE', volume_backed=False): """Tests live migration between two hosts. Requires CONF.compute_feature_enabled.live_migration to be True. :param state: The vm_state the migrated server should be in before and after the live migration. Supported values are 'ACTIVE' and 'PAUSED'. :param volume_backed: If the instance is volume backed or not. If volume_backed, *block* migration is not used. """ # Live migrate an instance to another host server_id = self.create_test_server(wait_until="ACTIVE", volume_backed=volume_backed)['id'] actual_host = self._get_host_for_server(server_id) target_host = self._get_host_other_than(actual_host) if state == 'PAUSED': self.admin_servers_client.pause_server(server_id) waiters.wait_for_server_status(self.admin_servers_client, server_id, state) self._migrate_server_to(server_id, target_host, volume_backed) waiters.wait_for_server_status(self.servers_client, server_id, state) migration_list = (self.admin_migration_client.list_migrations() ['migrations']) msg = ("Live Migration failed. Migrations list for Instance " "%s: [" % server_id) for live_migration in migration_list: if (live_migration['instance_uuid'] == server_id): msg += "\n%s" % live_migration msg += "]" self.assertEqual(target_host, self._get_host_for_server(server_id), msg) @test.idempotent_id('1dce86b8-eb04-4c03-a9d8-9c1dc3ee0c7b') def test_live_block_migration(self): self._test_live_migration() @test.idempotent_id('1e107f21-61b2-4988-8f22-b196e938ab88') @testtools.skipUnless(CONF.compute_feature_enabled.pause, 'Pause is not available.') def test_live_block_migration_paused(self): self._test_live_migration(state='PAUSED') @test.idempotent_id('5071cf17-3004-4257-ae61-73a84e28badd') @test.services('volume') def test_volume_backed_live_migration(self): self._test_live_migration(volume_backed=True) @test.idempotent_id('e19c0cc6-6720-4ed8-be83-b6603ed5c812') @testtools.skipIf(not CONF.compute_feature_enabled. block_migration_for_live_migration, 'Block Live migration not available') @testtools.skipIf(not CONF.compute_feature_enabled. block_migrate_cinder_iscsi, 'Block Live migration not configured for iSCSI') def test_iscsi_volume(self): server_id = self.create_test_server(wait_until="ACTIVE")['id'] actual_host = self._get_host_for_server(server_id) target_host = self._get_host_other_than(actual_host) volume = self.volumes_client.create_volume( display_name='test')['volume'] self.volumes_client.wait_for_volume_status(volume['id'], 'available') self.addCleanup(self._volume_clean_up, server_id, volume['id']) # Attach the volume to the server self.servers_client.attach_volume(server_id, volumeId=volume['id'], device='/dev/xvdb') self.volumes_client.wait_for_volume_status(volume['id'], 'in-use') self._migrate_server_to(server_id, target_host) waiters.wait_for_server_status(self.servers_client, server_id, 'ACTIVE') self.assertEqual(target_host, self._get_host_for_server(server_id))