xref: /qemu/tests/qemu-iotests/260 (revision b21e2380) 
1#!/usr/bin/env python3
2# group: rw quick
3#
4# Tests for temporary external snapshot when we have bitmaps.
5#
6# Copyright (c) 2019 Virtuozzo International GmbH. All rights reserved.
7#
8# This program is free software; you can redistribute it and/or modify
9# it under the terms of the GNU General Public License as published by
10# the Free Software Foundation; either version 2 of the License, or
11# (at your option) any later version.
12#
13# This program is distributed in the hope that it will be useful,
14# but WITHOUT ANY WARRANTY; without even the implied warranty of
15# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16# GNU General Public License for more details.
17#
18# You should have received a copy of the GNU General Public License
19# along with this program.  If not, see <http://www.gnu.org/licenses/>.
20#
21
22import iotests
23from iotests import qemu_img_create, file_path, log, filter_qmp_event
24
25iotests.script_initialize(
26    supported_fmts=['qcow2'],
27    unsupported_imgopts=['compat']
28)
29
30base, top = file_path('base', 'top')
31size = 64 * 1024 * 3
32
33
34def print_bitmap(msg, vm):
35    result = vm.qmp('query-block')['return'][0]
36    info = result.get("inserted", {})
37    if 'dirty-bitmaps' in info:
38        bitmap = info['dirty-bitmaps'][0]
39        log('{}: name={} dirty-clusters={}'.format(msg, bitmap['name'],
40            bitmap['count'] // 64 // 1024))
41    else:
42        log(msg + ': not found')
43
44
45def test(persistent, restart):
46    assert persistent or not restart
47    log("\nTestcase {}persistent {} restart\n".format(
48            '' if persistent else 'non-', 'with' if restart else 'without'))
49
50    qemu_img_create('-f', iotests.imgfmt, base, str(size))
51
52    vm = iotests.VM().add_drive(base)
53    vm.launch()
54
55    vm.qmp_log('block-dirty-bitmap-add', node='drive0', name='bitmap0',
56               persistent=persistent)
57    vm.hmp_qemu_io('drive0', 'write 0 64K')
58    print_bitmap('initial bitmap', vm)
59
60    vm.qmp_log('blockdev-snapshot-sync', device='drive0', snapshot_file=top,
61               format=iotests.imgfmt, filters=[iotests.filter_qmp_testfiles])
62    vm.hmp_qemu_io('drive0', 'write 64K 512')
63    print_bitmap('check that no bitmaps are in snapshot', vm)
64
65    if restart:
66        log("... Restart ...")
67        vm.shutdown()
68        vm = iotests.VM().add_drive(top)
69        vm.launch()
70
71    vm.qmp_log('block-commit', device='drive0', top=top,
72               filters=[iotests.filter_qmp_testfiles])
73    ev = vm.events_wait((('BLOCK_JOB_READY', None),
74                         ('BLOCK_JOB_COMPLETED', None)))
75    log(filter_qmp_event(ev))
76    if (ev['event'] == 'BLOCK_JOB_COMPLETED'):
77        vm.shutdown()
78        log(vm.get_log())
79        exit()
80
81    vm.qmp_log('block-job-complete', device='drive0')
82    ev = vm.event_wait('BLOCK_JOB_COMPLETED')
83    log(filter_qmp_event(ev))
84    print_bitmap('check bitmap after commit', vm)
85
86    vm.hmp_qemu_io('drive0', 'write 128K 64K')
87    print_bitmap('check updated bitmap', vm)
88
89    vm.shutdown()
90
91
92test(persistent=False, restart=False)
93test(persistent=True, restart=False)
94test(persistent=True, restart=True)
95