xref: /openbmc/qemu/tests/qemu-iotests/194 (revision bb2e0039) 
1#!/usr/bin/env python
2#
3# Copyright (C) 2017 Red Hat, Inc.
4#
5# This program is free software; you can redistribute it and/or modify
6# it under the terms of the GNU General Public License as published by
7# the Free Software Foundation; either version 2 of the License, or
8# (at your option) any later version.
9#
10# This program is distributed in the hope that it will be useful,
11# but WITHOUT ANY WARRANTY; without even the implied warranty of
12# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13# GNU General Public License for more details.
14#
15# You should have received a copy of the GNU General Public License
16# along with this program.  If not, see <http://www.gnu.org/licenses/>.
17#
18# Creator/Owner: Stefan Hajnoczi <stefanha@redhat.com>
19#
20# Non-shared storage migration test using NBD server and drive-mirror
21
22import iotests
23
24iotests.verify_platform(['linux'])
25
26with iotests.FilePath('source.img') as source_img_path, \
27     iotests.FilePath('dest.img') as dest_img_path, \
28     iotests.FilePath('migration.sock') as migration_sock_path, \
29     iotests.FilePath('nbd.sock') as nbd_sock_path, \
30     iotests.VM('source') as source_vm, \
31     iotests.VM('dest') as dest_vm:
32
33    img_size = '1G'
34    iotests.qemu_img_pipe('create', '-f', iotests.imgfmt, source_img_path, img_size)
35    iotests.qemu_img_pipe('create', '-f', iotests.imgfmt, dest_img_path, img_size)
36
37    iotests.log('Launching VMs...')
38    (source_vm.add_drive(source_img_path)
39              .launch())
40    (dest_vm.add_drive(dest_img_path)
41            .add_incoming('unix:{0}'.format(migration_sock_path))
42            .launch())
43
44    iotests.log('Launching NBD server on destination...')
45    iotests.log(dest_vm.qmp('nbd-server-start', addr={'type': 'unix', 'data': {'path': nbd_sock_path}}))
46    iotests.log(dest_vm.qmp('nbd-server-add', device='drive0', writable=True))
47
48    iotests.log('Starting `drive-mirror` on source...')
49    iotests.log(source_vm.qmp(
50                  'drive-mirror',
51                  device='drive0',
52                  target='nbd+unix:///drive0?socket={0}'.format(nbd_sock_path),
53                  sync='full',
54                  format='raw', # always raw, the server handles the format
55                  mode='existing',
56                  job_id='mirror-job0'))
57
58    iotests.log('Waiting for `drive-mirror` to complete...')
59    iotests.log(source_vm.event_wait('BLOCK_JOB_READY'),
60                filters=[iotests.filter_qmp_event])
61
62    iotests.log('Starting migration...')
63    source_vm.qmp('migrate-set-capabilities',
64                  capabilities=[{'capability': 'events', 'state': True}])
65    dest_vm.qmp('migrate-set-capabilities',
66                capabilities=[{'capability': 'events', 'state': True}])
67    iotests.log(source_vm.qmp('migrate', uri='unix:{0}'.format(migration_sock_path)))
68
69    while True:
70        event1 = source_vm.event_wait('MIGRATION')
71        iotests.log(event1, filters=[iotests.filter_qmp_event])
72        if event1['data']['status'] in ('completed', 'failed'):
73            iotests.log('Gracefully ending the `drive-mirror` job on source...')
74            iotests.log(source_vm.qmp('block-job-cancel', device='mirror-job0'))
75            break
76
77    while True:
78        event2 = source_vm.event_wait('BLOCK_JOB_COMPLETED')
79        iotests.log(event2, filters=[iotests.filter_qmp_event])
80        if event2['event'] == 'BLOCK_JOB_COMPLETED':
81            iotests.log('Stopping the NBD server on destination...')
82            iotests.log(dest_vm.qmp('nbd-server-stop'))
83            break
84