nova/nova/tests/functional/regressions/test_bug_1835822.py
Sean Mooney 641feb62a3 make config drives sticky bug 1835822
This change reorders the call in
_update_instance_after_spawn so that we call
configdrive.update_instance before we set
instance.launched_at. This ensures that if the vm
is booted with a config drive because the host had
force_config_drive=true the instance will keep its
config drive across reboots.

This change fixes a regression introduced as part
of fixing bug #1827492 which addressed failing
to boot vms after changing force_config_drive=false
to force_config_drive=true.

Change-Id: I9194423f5f95e9799bd891548e24756131d65e76
Related-Bug: #1827492
Closes-Bug: #1835822
2019-09-18 18:49:31 +01:00

192 lines
8.7 KiB
Python

# 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 import fixtures as func_fixtures
from nova.tests.functional import integrated_helpers
from nova.tests.unit import fake_notifier
from nova.tests.unit.image import fake as fake_image
from nova.tests.unit import policy_fixture
class RegressionTest1835822(
test.TestCase, integrated_helpers.InstanceHelperMixin):
# ---------------------------- setup ----------------------------
def setUp(self):
super(RegressionTest1835822, self).setUp()
# Use the standard fixtures.
self.useFixture(policy_fixture.RealPolicyFixture())
self.useFixture(nova_fixtures.NeutronFixture(self))
self.useFixture(func_fixtures.PlacementFixture())
self.api = self.useFixture(nova_fixtures.OSAPIFixture(
api_version='v2.1')).api
self.start_service('conductor')
self.start_service('scheduler')
self.start_service('compute')
# the image fake backend needed for image discovery
fake_image.stub_out_image_service(self)
self.addCleanup(fake_image.FakeImageService_reset)
images = self.api.get_images()
self.image_ref_0 = images[0]['id']
self.image_ref_1 = images[1]['id']
fake_notifier.stub_notifier(self)
self.addCleanup(fake_notifier.reset)
# ---------------------------- helpers ----------------------------
def _create_active_server(self, server_args=None):
basic_server = {
'flavorRef': 1,
'name': 'RegressionTest1835822',
'networks': [{
'uuid': nova_fixtures.NeutronFixture.network_1['id']
}],
'imageRef': self.image_ref_0
}
if server_args:
basic_server.update(server_args)
server = self.api.post_server({'server': basic_server})
return self._wait_for_state_change(self.api, server, 'ACTIVE')
def _hard_reboot_server(self, active_server):
args = {"reboot": {"type": "HARD"}}
self.api.api_post('servers/%s/action' %
active_server['id'], args)
fake_notifier.wait_for_versioned_notifications('instance.reboot.end')
return self._wait_for_state_change(self.api, active_server, 'ACTIVE')
def _rebuild_server(self, active_server):
args = {"rebuild": {"imageRef": self.image_ref_1}}
self.api.api_post('servers/%s/action' %
active_server['id'], args)
fake_notifier.wait_for_versioned_notifications('instance.rebuild.end')
return self._wait_for_state_change(self.api, active_server, 'ACTIVE')
def _shelve_server(self, active_server):
self.api.post_server_action(active_server['id'], {'shelve': {}})
return self._wait_for_state_change(
self.api, active_server, 'SHELVED_OFFLOADED')
def _unshelve_server(self, shelved_server):
self.api.post_server_action(shelved_server['id'], {'unshelve': {}})
return self._wait_for_state_change(self.api, shelved_server, 'ACTIVE')
# ---------------------------- tests ----------------------------
def test_create_server_with_config_drive(self):
"""Verify that we can create a server with a config drive.
"""
active_server = self._create_active_server(
server_args={'config_drive': True})
self.assertTrue(active_server['config_drive'])
def test_create_server_without_config_drive(self):
"""Verify that we can create a server without
a config drive.
"""
self.flags(force_config_drive=False)
active_server = self._create_active_server()
self.assertEqual('', active_server['config_drive'])
def test_create_server_with_forced_config_drive(self):
"""Verify that we can create a server with a forced
config drive.
"""
self.flags(force_config_drive=True)
active_server = self._create_active_server()
self.assertTrue(active_server['config_drive'])
def test_create_server_with_forced_config_drive_reboot(self):
"""Verify that we can create a server with a forced
config drive and it survives reboot.
"""
self.flags(force_config_drive=True)
active_server = self._create_active_server()
self.assertTrue(active_server['config_drive'])
active_server = self._hard_reboot_server(active_server)
self.assertTrue(active_server['config_drive'])
def test_create_server_config_drive_reboot_after_conf_change(self):
"""Verify that we can create a server with or without a forced
config drive it does not change across a reboot.
"""
# NOTE(sean-k-mooney): we do not need to restart the compute
# service because of the way self.flags overrides the config
# values.
self.flags(force_config_drive=True)
with_config_drive = self._create_active_server()
self.assertTrue(with_config_drive['config_drive'])
self.flags(force_config_drive=False)
without_config_drive = self._create_active_server()
self.assertEqual('', without_config_drive['config_drive'])
# this server was created with force_config_drive=true
# so assert now that force_config_drive is false it does
# not override the value it was booted with.
with_config_drive = self._hard_reboot_server(with_config_drive)
self.assertTrue(with_config_drive['config_drive'])
# this server was booted with force_config_drive=False so
# assert that it's config drive setting is not overridden
self.flags(force_config_drive=True)
without_config_drive = self._hard_reboot_server(without_config_drive)
self.assertEqual('', without_config_drive['config_drive'])
def test_create_server_config_drive_rebuild_after_conf_change(self):
"""Verify that we can create a server with or without a forced
config drive it does not change across a rebuild.
"""
self.flags(force_config_drive=True)
with_config_drive = self._create_active_server()
self.assertTrue(with_config_drive['config_drive'])
self.flags(force_config_drive=False)
without_config_drive = self._create_active_server()
self.assertEqual('', without_config_drive['config_drive'])
# this server was created with force_config_drive=true
# so assert now that force_config_drive is false it does
# not override the value it was booted with.
with_config_drive = self._rebuild_server(with_config_drive)
self.assertTrue(with_config_drive['config_drive'])
# this server was booted with force_config_drive=False so
# assert that it's config drive setting is not overridden
self.flags(force_config_drive=True)
without_config_drive = self._rebuild_server(without_config_drive)
self.assertEqual('', without_config_drive['config_drive'])
def test_create_server_config_drive_shelve_unshelve_conf_change(self):
"""Verify that we can create a server with or without a forced
config drive it does not change across a shelve and unshelve.
"""
self.flags(force_config_drive=True)
with_config_drive = self._create_active_server()
self.assertTrue(with_config_drive['config_drive'])
self.flags(force_config_drive=False)
without_config_drive = self._create_active_server()
self.assertEqual('', without_config_drive['config_drive'])
# this server was created with force_config_drive=true
# so assert now that force_config_drive is false it does
# not override the value it was booted with.
with_config_drive = self._shelve_server(with_config_drive)
with_config_drive = self._unshelve_server(with_config_drive)
self.assertTrue(with_config_drive['config_drive'])
# this server was booted with force_config_drive=False so
# assert that it's config drive setting is not overridden
self.flags(force_config_drive=True)
without_config_drive = self._shelve_server(without_config_drive)
without_config_drive = self._unshelve_server(without_config_drive)
self.assertEqual('', without_config_drive['config_drive'])