# 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 six 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 from nova.tests.unit.image import fake as fake_image from nova.tests.unit import policy_fixture 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(policy_fixture.RealPolicyFixture()) self.useFixture(nova_fixtures.CinderFixture(self, az=self.az)) self.useFixture(nova_fixtures.NeutronFixture(self)) self.useFixture(func_fixtures.PlacementFixture()) fake_image.stub_out_image_service(self) self.addCleanup(fake_image.FakeImageService_reset) # 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. self.start_service('compute', 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. """ self.flags(cross_az_attach=False, group='cinder') server = self._build_minimal_create_server_request( self.api, 'test_cross_az_attach_false_boot_from_volume_no_az_specified') del server['imageRef'] # Do not need imageRef for boot from volume. server['block_device_mapping_v2'] = [{ 'source_type': 'volume', 'destination_type': 'volume', 'boot_index': 0, 'uuid': nova_fixtures.CinderFixture.IMAGE_BACKED_VOL }] # FIXME(mriedem): This is bug 1694844 where the user creates the server # without specifying an AZ and there is no default_schedule_zone set # and the cross_az_attach check fails because the volume's availability # zone shows up as "us-central-1" and None != "us-central-1" so the API # thinks the cross_az_attach=False setting was violated. ex = self.assertRaises(api_client.OpenStackApiException, self.api.post_server, {'server': server}) self.assertEqual(400, ex.response.status_code) self.assertIn('are not in the same availability_zone', six.text_type(ex)) 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. """ self.flags(cross_az_attach=False, group='cinder') server = self._build_minimal_create_server_request( self.api, 'test_cross_az_attach_false_data_volume_no_az_specified') # 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 }] # FIXME(mriedem): This is bug 1694844 where the user creates the server # without specifying an AZ and there is no default_schedule_zone set # and the cross_az_attach check fails because the volume's availability # zone shows up as "us-central-1" and None != "us-central-1" so the API # thinks the cross_az_attach=False setting was violated. ex = self.assertRaises(api_client.OpenStackApiException, self.api.post_server, {'server': server}) self.assertEqual(400, ex.response.status_code) self.assertIn('are not in the same availability_zone', six.text_type(ex)) 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) # For this test we have to put the compute host in an aggregate with # the AZ we want to match. agg_id = self.api.post_aggregate({ 'aggregate': { 'name': self.az, 'availability_zone': self.az } })['id'] self.api.add_host_to_aggregate(agg_id, 'host1') server = self._build_minimal_create_server_request( self.api, 'test_cross_az_attach_false_boot_from_volume_default_zone_match') del server['imageRef'] # Do not need imageRef for boot from volume. 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(self.api, server, 'ACTIVE') self.assertEqual(self.az, server['OS-EXT-AZ:availability_zone'])