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# 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 unittest import mock
import nova
from nova.tests.functional import integrated_helpers
class UpdateResourceMigrationRaceTest(
integrated_helpers.ProviderUsageBaseTestCase):
compute_driver = 'fake.SmallFakeDriver'
def setUp(self):
super(UpdateResourceMigrationRaceTest, self).setUp()
self._start_compute(host="host1")
self._start_compute(host="host2")
flavors = self.api.get_flavors()
self.flavor1 = flavors[0]
def test_update_dest_between_mig_start_and_claim(self):
"""Validate update_available_resource when an instance exists that has
started migrating but not yet been claimed on the destination.
"""
server = self._boot_and_check_allocations(
self.flavor1, 'host1')
orig_prep = nova.compute.manager.ComputeManager.pre_live_migration
def fake_pre(*args, **kwargs):
# Trigger update_available_resource on the destination (this runs
# it on the source as well, but that's okay).
self._run_periodics()
return orig_prep(*args, **kwargs)
with mock.patch(
'nova.compute.manager.ComputeManager.pre_live_migration',
new=fake_pre):
# Migrate the server.
self.api.post_server_action(
server['id'],
{'os-migrateLive': {'host': None, 'block_migration': 'auto'}})
self._wait_for_server_parameter(server, {
'OS-EXT-STS:task_state': None,
'status': 'ACTIVE'})
# NOTE(efried): This was bug 1849165 where
# _populate_assigned_resources raised a TypeError because it tried
# to access the instance's migration_context before that existed.
self.assertNotIn(
"TypeError: argument of type 'NoneType' is not iterable",
self.stdlog.logger.output)
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