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# Copyright 2017 Ericsson
#
# 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 time
from oslo_log import log as logging
from nova import test
from nova.tests import fixtures as nova_fixtures
from nova.tests.functional import fixtures as func_fixtures
from nova.tests.functional import integrated_helpers
from nova.tests.unit import fake_network
LOG = logging.getLogger(__name__)
class FailedEvacuateStateTests(test.TestCase,
integrated_helpers.InstanceHelperMixin):
"""Regression Tests for bug #1713783
When evacuation fails with NoValidHost, the migration status remains
'accepted' instead of 'error'. This causes problem in case the compute
service starts up again and looks for migrations with status 'accepted',
as it then removes the local instances for those migrations even though
the instance never actually migrated to another host.
"""
microversion = 'latest'
def setUp(self):
super(FailedEvacuateStateTests, self).setUp()
self.useFixture(nova_fixtures.RealPolicyFixture())
self.useFixture(nova_fixtures.NeutronFixture(self))
self.useFixture(nova_fixtures.GlanceFixture(self))
self.useFixture(func_fixtures.PlacementFixture())
api_fixture = self.useFixture(nova_fixtures.OSAPIFixture(
api_version='v2.1'))
self.api = api_fixture.admin_api
self.api.microversion = self.microversion
self.start_service('conductor')
self.start_service('scheduler')
self.hostname = 'host1'
self.compute1 = self.start_service('compute', host=self.hostname)
fake_network.set_stub_network_methods(self)
def _wait_for_notification_event_type(self, event_type, max_retries=10):
retry_counter = 0
while True:
if len(self.notifier.notifications) > 0:
for notification in self.notifier.notifications:
if notification.event_type == event_type:
return
if retry_counter == max_retries:
self.fail('Wait for notification event type (%s) failed'
% event_type)
retry_counter += 1
time.sleep(0.5)
def _boot_a_server(self):
server_req = self._build_server(
image_uuid='155d900f-4e14-4e4c-a73d-069cbf4541e6',
networks='none')
LOG.info('booting on %s', self.hostname)
created_server = self.api.post_server({'server': server_req})
return self._wait_for_state_change(created_server, 'ACTIVE')
def test_evacuate_no_valid_host(self):
# Boot a server
server = self._boot_a_server()
# Force source compute down
compute_id = self.api.get_services(
host=self.hostname, binary='nova-compute')[0]['id']
self.api.put_service(compute_id, {'forced_down': 'true'})
self.notifier = self.useFixture(
nova_fixtures.NotificationFixture(self))
# Initiate evacuation
self._evacuate_server(
server, expected_state='ERROR', expected_host=self.hostname,
expected_migration_status='error')
self._wait_for_notification_event_type('compute_task.rebuild_server')
# Check migrations
migrations = self.api.get_migrations()
self.assertEqual(1, len(migrations))
self.assertEqual('evacuation', migrations[0]['migration_type'])
self.assertEqual(server['id'], migrations[0]['instance_uuid'])
self.assertEqual(self.hostname, migrations[0]['source_compute'])
self.assertEqual('error', migrations[0]['status'])
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