xref: /openbmc/qemu/tests/qemu-iotests/218 (revision e0c72452) 
1#!/usr/bin/env python3
2# group: rw quick
3#
4# This test covers what happens when a mirror block job is cancelled
5# in various phases of its existence.
6#
7# Note that this test only checks the emitted events (i.e.
8# BLOCK_JOB_COMPLETED vs. BLOCK_JOB_CANCELLED), it does not compare
9# whether the target is in sync with the source when the
10# BLOCK_JOB_COMPLETED event occurs.  This is covered by other tests
11# (such as 041).
12#
13# Copyright (C) 2018 Red Hat, Inc.
14#
15# This program is free software; you can redistribute it and/or modify
16# it under the terms of the GNU General Public License as published by
17# the Free Software Foundation; either version 2 of the License, or
18# (at your option) any later version.
19#
20# This program is distributed in the hope that it will be useful,
21# but WITHOUT ANY WARRANTY; without even the implied warranty of
22# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
23# GNU General Public License for more details.
24#
25# You should have received a copy of the GNU General Public License
26# along with this program.  If not, see <http://www.gnu.org/licenses/>.
27#
28# Creator/Owner: Hanna Reitz <hreitz@redhat.com>
29
30import iotests
31from iotests import log, qemu_img, qemu_io
32
33iotests.script_initialize(supported_fmts=['qcow2', 'raw'])
34
35
36# Launches the VM, adds two null-co nodes (source and target), and
37# starts a blockdev-mirror job on them.
38#
39# Either both or none of speed and buf_size must be given.
40
41def start_mirror(vm, speed=None, buf_size=None):
42    vm.launch()
43
44    vm.cmd('blockdev-add',
45               node_name='source',
46               driver='null-co',
47               size=1048576)
48
49    vm.cmd('blockdev-add',
50               node_name='target',
51               driver='null-co',
52               size=1048576)
53
54    if speed is not None:
55        vm.cmd('blockdev-mirror',
56                   job_id='mirror',
57                   device='source',
58                   target='target',
59                   sync='full',
60                   speed=speed,
61                   buf_size=buf_size)
62    else:
63        vm.cmd('blockdev-mirror',
64                   job_id='mirror',
65                   device='source',
66                   target='target',
67                   sync='full')
68
69
70log('')
71log('=== Cancel mirror job before convergence ===')
72log('')
73
74log('--- force=false ---')
75log('')
76
77with iotests.VM() as vm:
78    # Low speed so it does not converge
79    start_mirror(vm, 65536, 65536)
80
81    log('Cancelling job')
82    log(vm.qmp('block-job-cancel', device='mirror', force=False))
83
84    log(vm.event_wait('BLOCK_JOB_CANCELLED'),
85        filters=[iotests.filter_qmp_event])
86
87log('')
88log('--- force=true ---')
89log('')
90
91with iotests.VM() as vm:
92    # Low speed so it does not converge
93    start_mirror(vm, 65536, 65536)
94
95    log('Cancelling job')
96    log(vm.qmp('block-job-cancel', device='mirror', force=True))
97
98    log(vm.event_wait('BLOCK_JOB_CANCELLED'),
99        filters=[iotests.filter_qmp_event])
100
101
102log('')
103log('=== Cancel mirror job after convergence ===')
104log('')
105
106log('--- force=false ---')
107log('')
108
109with iotests.VM() as vm:
110    start_mirror(vm)
111
112    log(vm.event_wait('BLOCK_JOB_READY'),
113        filters=[iotests.filter_qmp_event])
114
115    log('Cancelling job')
116    log(vm.qmp('block-job-cancel', device='mirror', force=False))
117
118    log(vm.event_wait('BLOCK_JOB_COMPLETED'),
119        filters=[iotests.filter_qmp_event])
120
121log('')
122log('--- force=true ---')
123log('')
124
125with iotests.VM() as vm:
126    start_mirror(vm)
127
128    log(vm.event_wait('BLOCK_JOB_READY'),
129        filters=[iotests.filter_qmp_event])
130
131    log('Cancelling job')
132    log(vm.qmp('block-job-cancel', device='mirror', force=True))
133
134    log(vm.event_wait('BLOCK_JOB_CANCELLED'),
135        filters=[iotests.filter_qmp_event])
136
137log('')
138log('=== Cancel mirror job from throttled node by quitting ===')
139log('')
140
141with iotests.VM() as vm, \
142     iotests.FilePath('src.img') as src_img_path:
143
144    qemu_img('create', '-f', iotests.imgfmt, src_img_path, '64M')
145    qemu_io('-f', iotests.imgfmt, src_img_path, '-c', 'write -P 42 0M 64M')
146
147    vm.launch()
148
149    vm.cmd('object-add', qom_type='throttle-group', id='tg',
150           limits={'bps-read': 4096})
151
152    vm.cmd('blockdev-add',
153           node_name='source',
154           driver=iotests.imgfmt,
155           file={
156               'driver': 'file',
157               'filename': src_img_path
158           })
159
160    vm.cmd('blockdev-add',
161           node_name='throttled-source',
162           driver='throttle',
163           throttle_group='tg',
164           file='source')
165
166    vm.cmd('blockdev-add',
167           node_name='target',
168           driver='null-co',
169           size=(64 * 1048576))
170
171    vm.cmd('blockdev-mirror',
172           job_id='mirror',
173           device='throttled-source',
174           target='target',
175           sync='full')
176
177    log(vm.qmp('quit'))
178
179    with iotests.Timeout(5, 'Timeout waiting for VM to quit'):
180        vm.shutdown()
181