# 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. from nova import test from nova.tests import fixtures as nova_fixtures from nova.tests.functional.api import client as api_client from nova.tests.functional import fixtures as func_fixtures from nova.tests.functional import integrated_helpers class CrossAZAttachTestCase(test.TestCase, integrated_helpers.InstanceHelperMixin): """Contains various scenarios for the [cinder]/cross_az_attach option and how it affects interactions between nova and cinder in the API and compute service. """ az = 'us-central-1' def setUp(self): super(CrossAZAttachTestCase, self).setUp() # Use the standard fixtures. self.useFixture(nova_fixtures.RealPolicyFixture()) self.useFixture(nova_fixtures.CinderFixture(self, az=self.az)) self.useFixture(nova_fixtures.GlanceFixture(self)) self.useFixture(nova_fixtures.NeutronFixture(self)) self.useFixture(func_fixtures.PlacementFixture()) # Start nova controller services. self.api = self.useFixture(nova_fixtures.OSAPIFixture( api_version='v2.1')).admin_api self.start_service('conductor') self.start_service('scheduler') # Start one compute service and add it to the AZ. This allows us to # get past the AvailabilityZoneFilter and build a server. self.start_service('compute', host='host1') agg_id = self.api.post_aggregate({'aggregate': { 'name': self.az, 'availability_zone': self.az}})['id'] self.api.api_post('/os-aggregates/%s/action' % agg_id, {'add_host': {'host': 'host1'}}) def test_cross_az_attach_false_boot_from_volume_no_az_specified(self): """Tests the scenario where [cinder]/cross_az_attach=False and the server is created with a pre-existing volume but the server create request does not specify an AZ nor is [DEFAULT]/default_schedule_zone set. In this case the server is created in the zone specified by the volume. """ self.flags(cross_az_attach=False, group='cinder') # Do not need imageRef for boot from volume. server = self._build_server(image_uuid='') server['block_device_mapping_v2'] = [{ 'source_type': 'volume', 'destination_type': 'volume', 'boot_index': 0, 'uuid': nova_fixtures.CinderFixture.IMAGE_BACKED_VOL }] server = self.api.post_server({'server': server}) server = self._wait_for_state_change(server, 'ACTIVE') self.assertEqual(self.az, server['OS-EXT-AZ:availability_zone']) def test_cross_az_attach_false_data_volume_no_az_specified(self): """Tests the scenario where [cinder]/cross_az_attach=False and the server is created with a pre-existing volume as a non-boot data volume but the server create request does not specify an AZ nor is [DEFAULT]/default_schedule_zone set. In this case the server is created in the zone specified by the non-root data volume. """ self.flags(cross_az_attach=False, group='cinder') server = self._build_server() # Note that we use the legacy block_device_mapping parameter rather # than block_device_mapping_v2 because that will create an implicit # source_type=image, destination_type=local, boot_index=0, # uuid=$imageRef which is used as the root BDM and allows our # non-boot data volume to be attached during server create. Otherwise # we get InvalidBDMBootSequence. server['block_device_mapping'] = [{ # This is a non-bootable volume in the CinderFixture. 'volume_id': nova_fixtures.CinderFixture.SWAP_OLD_VOL }] server = self.api.post_server({'server': server}) server = self._wait_for_state_change(server, 'ACTIVE') self.assertEqual(self.az, server['OS-EXT-AZ:availability_zone']) def test_cross_az_attach_false_boot_from_volume_default_zone_match(self): """Tests the scenario where [cinder]/cross_az_attach=False and the server is created with a pre-existing volume and the [DEFAULT]/default_schedule_zone matches the volume's AZ. """ self.flags(cross_az_attach=False, group='cinder') self.flags(default_schedule_zone=self.az) # Do not need imageRef for boot from volume. server = self._build_server(image_uuid='') server['block_device_mapping_v2'] = [{ 'source_type': 'volume', 'destination_type': 'volume', 'boot_index': 0, 'uuid': nova_fixtures.CinderFixture.IMAGE_BACKED_VOL }] server = self.api.post_server({'server': server}) server = self._wait_for_state_change(server, 'ACTIVE') self.assertEqual(self.az, server['OS-EXT-AZ:availability_zone']) def test_cross_az_attach_false_bfv_az_specified_mismatch(self): """Negative test where the server is being created in a specific AZ that does not match the volume being attached which results in a 400 error response. """ self.flags(cross_az_attach=False, group='cinder') # Do not need imageRef for boot from volume. server = self._build_server(image_uuid='', az='london') server['block_device_mapping_v2'] = [{ 'source_type': 'volume', 'destination_type': 'volume', 'boot_index': 0, 'uuid': nova_fixtures.CinderFixture.IMAGE_BACKED_VOL }] # Use the AZ fixture to fake out the london AZ. with nova_fixtures.AvailabilityZoneFixture(zones=['london', self.az]): ex = self.assertRaises(api_client.OpenStackApiException, self.api.post_server, {'server': server}) self.assertEqual(400, ex.response.status_code) self.assertIn('Server and volumes are not in the same availability ' 'zone. Server is in: london. Volumes are in: %s' % self.az, str(ex)) def test_cross_az_attach_false_no_volumes(self): """A simple test to make sure cross_az_attach=False API validation is a noop if there are no volumes in the server create request. """ self.flags(cross_az_attach=False, group='cinder') server = self._create_server(az=self.az) self.assertEqual(self.az, server['OS-EXT-AZ:availability_zone'])