1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
# Copyright 2021, Canonical, Inc. All Rights Reserved.
#
# 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
from nova import exception as nova_exceptions
from nova.tests.fixtures import libvirt as fakelibvirt
from nova.tests.functional import integrated_helpers
from nova.tests.functional.libvirt import base
class TestRollbackWithHWOffloadedOVS(
base.LibvirtMigrationMixin,
base.ServersTestBase,
integrated_helpers.InstanceHelperMixin
):
"""Regression test for bug LP#1944619
Assert the behaviour observed in bug LP#1944619 caused by the live
migration cleanup code being used to cleanup pre-live migration failures.
When SRIOV devices are in use on a VM, that will cause the source host to
try to re-attach a VIF not actually de-attached causing a failure.
The exception mocked in pre_live_migration reproduce an arbitrary error
that might cause the pre-live migration process to fail and
rollback_live_migration_at_source reproduce the device re-attach failure.
"""
api_major_version = 'v2.1'
microversion = 'latest'
ADMIN_API = True
def setUp(self):
super().setUp()
self.start_compute(
hostname='src',
host_info=fakelibvirt.HostInfo(
cpu_nodes=1, cpu_sockets=1, cpu_cores=4, cpu_threads=1))
self.start_compute(
hostname='dest',
host_info=fakelibvirt.HostInfo(
cpu_nodes=1, cpu_sockets=1, cpu_cores=4, cpu_threads=1))
self.src = self.computes['src']
self.dest = self.computes['dest']
def test_rollback_pre_live_migration(self):
self.server = self._create_server(host='src', networks='none')
lib_path = "nova.virt.libvirt.driver.LibvirtDriver"
funtion_path = "pre_live_migration"
mock_lib_path_prelive = "%s.%s" % (lib_path, funtion_path)
with mock.patch(mock_lib_path_prelive,
side_effect=nova_exceptions.DestinationDiskExists(
path='/var/non/existent')) as mlpp:
funtion_path = "rollback_live_migration_at_source"
mock_lib_path_rollback = "%s.%s" % (lib_path, funtion_path)
with mock.patch(mock_lib_path_rollback) as mlpr:
# Live migrate the instance to another host
self._live_migrate(self.server,
migration_expected_state='failed',
server_expected_state='ACTIVE')
mlpr.assert_not_called()
mlpp.assert_called_once()
|
