xref: /openbmc/qemu/tests/qemu-iotests/218 (revision 19f70347) 
1#!/usr/bin/env python3
2#
3# This test covers what happens when a mirror block job is cancelled
4# in various phases of its existence.
5#
6# Note that this test only checks the emitted events (i.e.
7# BLOCK_JOB_COMPLETED vs. BLOCK_JOB_CANCELLED), it does not compare
8# whether the target is in sync with the source when the
9# BLOCK_JOB_COMPLETED event occurs.  This is covered by other tests
10# (such as 041).
11#
12# Copyright (C) 2018 Red Hat, Inc.
13#
14# This program is free software; you can redistribute it and/or modify
15# it under the terms of the GNU General Public License as published by
16# the Free Software Foundation; either version 2 of the License, or
17# (at your option) any later version.
18#
19# This program is distributed in the hope that it will be useful,
20# but WITHOUT ANY WARRANTY; without even the implied warranty of
21# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
22# GNU General Public License for more details.
23#
24# You should have received a copy of the GNU General Public License
25# along with this program.  If not, see <http://www.gnu.org/licenses/>.
26#
27# Creator/Owner: Max Reitz <mreitz@redhat.com>
28
29import iotests
30from iotests import log, qemu_img, qemu_io_silent
31
32iotests.verify_image_format(supported_fmts=['qcow2', 'raw'])
33
34
35# Launches the VM, adds two null-co nodes (source and target), and
36# starts a blockdev-mirror job on them.
37#
38# Either both or none of speed and buf_size must be given.
39
40def start_mirror(vm, speed=None, buf_size=None):
41    vm.launch()
42
43    ret = vm.qmp('blockdev-add',
44                     node_name='source',
45                     driver='null-co',
46                     size=1048576)
47    assert ret['return'] == {}
48
49    ret = vm.qmp('blockdev-add',
50                     node_name='target',
51                     driver='null-co',
52                     size=1048576)
53    assert ret['return'] == {}
54
55    if speed is not None:
56        ret = vm.qmp('blockdev-mirror',
57                         job_id='mirror',
58                         device='source',
59                         target='target',
60                         sync='full',
61                         speed=speed,
62                         buf_size=buf_size)
63    else:
64        ret = vm.qmp('blockdev-mirror',
65                         job_id='mirror',
66                         device='source',
67                         target='target',
68                         sync='full')
69
70    assert ret['return'] == {}
71
72
73log('')
74log('=== Cancel mirror job before convergence ===')
75log('')
76
77log('--- force=false ---')
78log('')
79
80with iotests.VM() as vm:
81    # Low speed so it does not converge
82    start_mirror(vm, 65536, 65536)
83
84    log('Cancelling job')
85    log(vm.qmp('block-job-cancel', device='mirror', force=False))
86
87    log(vm.event_wait('BLOCK_JOB_CANCELLED'),
88        filters=[iotests.filter_qmp_event])
89
90log('')
91log('--- force=true ---')
92log('')
93
94with iotests.VM() as vm:
95    # Low speed so it does not converge
96    start_mirror(vm, 65536, 65536)
97
98    log('Cancelling job')
99    log(vm.qmp('block-job-cancel', device='mirror', force=True))
100
101    log(vm.event_wait('BLOCK_JOB_CANCELLED'),
102        filters=[iotests.filter_qmp_event])
103
104
105log('')
106log('=== Cancel mirror job after convergence ===')
107log('')
108
109log('--- force=false ---')
110log('')
111
112with iotests.VM() as vm:
113    start_mirror(vm)
114
115    log(vm.event_wait('BLOCK_JOB_READY'),
116        filters=[iotests.filter_qmp_event])
117
118    log('Cancelling job')
119    log(vm.qmp('block-job-cancel', device='mirror', force=False))
120
121    log(vm.event_wait('BLOCK_JOB_COMPLETED'),
122        filters=[iotests.filter_qmp_event])
123
124log('')
125log('--- force=true ---')
126log('')
127
128with iotests.VM() as vm:
129    start_mirror(vm)
130
131    log(vm.event_wait('BLOCK_JOB_READY'),
132        filters=[iotests.filter_qmp_event])
133
134    log('Cancelling job')
135    log(vm.qmp('block-job-cancel', device='mirror', force=True))
136
137    log(vm.event_wait('BLOCK_JOB_CANCELLED'),
138        filters=[iotests.filter_qmp_event])
139
140log('')
141log('=== Cancel mirror job from throttled node by quitting ===')
142log('')
143
144with iotests.VM() as vm, \
145     iotests.FilePath('src.img') as src_img_path:
146
147    assert qemu_img('create', '-f', iotests.imgfmt, src_img_path, '64M') == 0
148    assert qemu_io_silent('-f', iotests.imgfmt, src_img_path,
149                          '-c', 'write -P 42 0M 64M') == 0
150
151    vm.launch()
152
153    ret = vm.qmp('object-add', qom_type='throttle-group', id='tg',
154                 props={'x-bps-read': 4096})
155    assert ret['return'] == {}
156
157    ret = vm.qmp('blockdev-add',
158                 node_name='source',
159                 driver=iotests.imgfmt,
160                 file={
161                     'driver': 'file',
162                     'filename': src_img_path
163                 })
164    assert ret['return'] == {}
165
166    ret = vm.qmp('blockdev-add',
167                 node_name='throttled-source',
168                 driver='throttle',
169                 throttle_group='tg',
170                 file='source')
171    assert ret['return'] == {}
172
173    ret = vm.qmp('blockdev-add',
174                 node_name='target',
175                 driver='null-co',
176                 size=(64 * 1048576))
177    assert ret['return'] == {}
178
179    ret = vm.qmp('blockdev-mirror',
180                 job_id='mirror',
181                 device='throttled-source',
182                 target='target',
183                 sync='full')
184    assert ret['return'] == {}
185
186    log(vm.qmp('quit'))
187
188    with iotests.Timeout(5, 'Timeout waiting for VM to quit'):
189        vm.shutdown(has_quit=True)
190