xref: /openbmc/qemu/tests/qemu-iotests/202 (revision 05a24871)
1#!/usr/bin/env python3
2# group: rw quick
3#
4# Copyright (C) 2017 Red Hat, Inc.
5#
6# This program is free software; you can redistribute it and/or modify
7# it under the terms of the GNU General Public License as published by
8# the Free Software Foundation; either version 2 of the License, or
9# (at your option) any later version.
10#
11# This program is distributed in the hope that it will be useful,
12# but WITHOUT ANY WARRANTY; without even the implied warranty of
13# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14# GNU General Public License for more details.
15#
16# You should have received a copy of the GNU General Public License
17# along with this program.  If not, see <http://www.gnu.org/licenses/>.
18#
19# Creator/Owner: Stefan Hajnoczi <stefanha@redhat.com>
20#
21# Check that QMP 'transaction' blockdev-snapshot-sync with multiple drives on a
22# single IOThread completes successfully.  This particular command triggered a
23# hang due to recursive AioContext locking and BDRV_POLL_WHILE().  Protect
24# against regressions.
25
26import iotests
27
28iotests.script_initialize(supported_fmts=['qcow2'],
29                          supported_platforms=['linux'])
30
31with iotests.FilePath('disk0.img') as disk0_img_path, \
32     iotests.FilePath('disk1.img') as disk1_img_path, \
33     iotests.FilePath('disk0-snap.img') as disk0_snap_img_path, \
34     iotests.FilePath('disk1-snap.img') as disk1_snap_img_path, \
35     iotests.VM() as vm:
36
37    img_size = '10M'
38    iotests.qemu_img_pipe('create', '-f', iotests.imgfmt, disk0_img_path, img_size)
39    iotests.qemu_img_pipe('create', '-f', iotests.imgfmt, disk1_img_path, img_size)
40
41    iotests.log('Launching VM...')
42    vm.launch()
43
44    iotests.log('Adding IOThread...')
45    iotests.log(vm.qmp('object-add',
46                       qom_type='iothread',
47                       id='iothread0'))
48
49    iotests.log('Adding blockdevs...')
50    iotests.log(vm.qmp('blockdev-add',
51                       driver=iotests.imgfmt,
52                       node_name='disk0',
53                       file={
54                           'driver': 'file',
55                           'filename': disk0_img_path,
56                       }))
57    iotests.log(vm.qmp('blockdev-add',
58                       driver=iotests.imgfmt,
59                       node_name='disk1',
60                       file={
61                           'driver': 'file',
62                           'filename': disk1_img_path,
63                       }))
64
65    iotests.log('Setting iothread...')
66    iotests.log(vm.qmp('x-blockdev-set-iothread',
67                       node_name='disk0',
68                       iothread='iothread0'))
69    iotests.log(vm.qmp('x-blockdev-set-iothread',
70                       node_name='disk1',
71                       iothread='iothread0'))
72
73    iotests.log('Creating external snapshots...')
74    iotests.log(vm.qmp(
75                  'transaction',
76                  actions=[
77                      {
78                          'data': {
79                              'node-name': 'disk0',
80                              'snapshot-file': disk0_snap_img_path,
81                              'snapshot-node-name': 'disk0-snap',
82                              'mode': 'absolute-paths',
83                              'format': iotests.imgfmt,
84                          },
85                          'type': 'blockdev-snapshot-sync'
86                      }, {
87                          'data': {
88                              'node-name': 'disk1',
89                              'snapshot-file': disk1_snap_img_path,
90                              'snapshot-node-name': 'disk1-snap',
91                              'mode': 'absolute-paths',
92                              'format': iotests.imgfmt
93                          },
94                          'type': 'blockdev-snapshot-sync'
95                      }
96                  ]))
97