172 lines
7.1 KiB
Python
172 lines
7.1 KiB
Python
# Copyright 2017 Huawei Technologies Co.,LTD.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import time
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from oslo_log import log as logging
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from nova import test
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from nova.tests import fixtures as nova_fixtures
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from nova.tests.functional.api import client
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from nova.tests.functional import fixtures as func_fixtures
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from nova.tests.unit import cast_as_call
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import nova.tests.unit.image.fake
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from nova.tests.unit import policy_fixture
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LOG = logging.getLogger(__name__)
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class TestLocalDeleteAttachedVolumes(test.TestCase):
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"""Test local delete in the API of a server with a volume attached.
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This test creates a server, then shelve-offloads it, attaches a
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volume, and then deletes the server.
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Since the server is shelved-offloaded it does not have instance.host
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set which should trigger a local delete flow in the API. During local
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delete we should try to cleanup any attached volumes.
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This test asserts that on a local delete we also detach any volumes
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and destroy the related BlockDeviceMappings.
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"""
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def setUp(self):
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super(TestLocalDeleteAttachedVolumes, self).setUp()
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self.useFixture(policy_fixture.RealPolicyFixture())
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# We need the CinderFixture to stub out the volume API.
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self.cinder = self.useFixture(
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nova_fixtures.CinderFixture(self))
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# The NeutronFixture is needed to stub out validate_networks in API.
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self.useFixture(nova_fixtures.NeutronFixture(self))
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# Use the PlacementFixture to avoid annoying warnings in the logs.
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self.useFixture(func_fixtures.PlacementFixture())
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api_fixture = self.useFixture(nova_fixtures.OSAPIFixture(
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api_version='v2.1'))
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self.api = api_fixture.api
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# We want to use 2.37 for passing networks='none' on server create.
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# We also need this since you can only attach a volume to a
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# shelved-offloaded server in microversion 2.20+.
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self.api.microversion = 'latest'
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# the image fake backend needed for image discovery
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nova.tests.unit.image.fake.stub_out_image_service(self)
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self.start_service('conductor')
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self.start_service('scheduler')
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self.start_service('compute')
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self.useFixture(cast_as_call.CastAsCall(self))
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self.flavor_id = self.api.get_flavors()[0]['id']
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def _wait_for_instance_status(self, server_id, status):
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timeout = 0.0
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server = self.api.get_server(server_id)
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while server['status'] != status and timeout < 10.0:
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time.sleep(.1)
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timeout += .1
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server = self.api.get_server(server_id)
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if server['status'] != status:
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self.fail('Timed out waiting for server %s to have status: %s. '
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'Current status: %s' %
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(server_id, status, server['status']))
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return server
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def _wait_for_instance_delete(self, server_id):
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timeout = 0.0
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while timeout < 10.0:
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try:
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server = self.api.get_server(server_id)
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except client.OpenStackApiNotFoundException:
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# the instance is gone so we're happy
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return
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else:
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time.sleep(.1)
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timeout += .1
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self.fail('Timed out waiting for server %s to be deleted. '
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'Current vm_state: %s. Current task_state: %s' %
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(server_id, server['OS-EXT-STS:vm_state'],
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server['OS-EXT-STS:task_state']))
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def _delete_server(self, server):
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try:
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self.api.delete_server(server['id'])
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except client.OpenStackApiNotFoundException:
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pass
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def _wait_for_volume_attach(self, server_id, volume_id):
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timeout = 0.0
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server = self.api.get_server(server_id)
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attached_vols = [vol['id'] for vol in
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server['os-extended-volumes:volumes_attached']]
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while volume_id not in attached_vols and timeout < 10.0:
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time.sleep(.1)
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timeout += .1
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server = self.api.get_server(server_id)
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attached_vols = [vol['id'] for vol in
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server['os-extended-volumes:volumes_attached']]
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if volume_id not in attached_vols:
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self.fail('Timed out waiting for volume %s to be attached to '
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'server %s. Currently attached volumes: %s' %
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(volume_id, server_id, attached_vols))
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def test_local_delete_with_volume_attached(self, mock_version_get=None):
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LOG.info('Creating server and waiting for it to be ACTIVE.')
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server = dict(
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name='local-delete-volume-attach-test',
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# The image ID comes from nova.tests.unit.image.fake.
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imageRef='76fa36fc-c930-4bf3-8c8a-ea2a2420deb6',
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flavorRef=self.flavor_id,
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# Bypass network setup on the compute.
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networks='none')
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server = self.api.post_server({'server': server})
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server_id = server['id']
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self.addCleanup(self._delete_server, server)
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self._wait_for_instance_status(server_id, 'ACTIVE')
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LOG.info('Shelve-offloading server %s', server_id)
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self.api.post_server_action(server_id, {'shelve': None})
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# Wait for the server to be offloaded.
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self._wait_for_instance_status(server_id, 'SHELVED_OFFLOADED')
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volume_id = '9a695496-44aa-4404-b2cc-ccab2501f87e'
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LOG.info('Attaching volume %s to server %s', volume_id, server_id)
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self.api.post_server_volume(
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server_id, dict(volumeAttachment=dict(volumeId=volume_id)))
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# Wait for the volume to show up in the server's list of attached
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# volumes.
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LOG.info('Validating that volume %s is attached to server %s.',
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volume_id, server_id)
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self._wait_for_volume_attach(server_id, volume_id)
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# Check to see that the fixture is tracking the server and volume
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# attachment.
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self.assertIn(volume_id,
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self.cinder.volume_ids_for_instance(server_id))
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# At this point the instance.host is no longer set, so deleting
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# the server will take the local delete path in the API.
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LOG.info('Deleting shelved-offloaded server %s.', server_id)
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self._delete_server(server)
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# Now wait for the server to be gone.
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self._wait_for_instance_delete(server_id)
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LOG.info('Validating that volume %s was detached from server %s.',
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volume_id, server_id)
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# Now that the bug is fixed, assert the volume was detached.
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self.assertNotIn(volume_id,
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self.cinder.volume_ids_for_instance(server_id))
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