1#!/usr/bin/env python3
2#
3# Test parallels load bitmap
4#
5# Copyright (c) 2021 Virtuozzo International GmbH.
6#
7# This program is free software; you can redistribute it and/or modify
8# it under the terms of the GNU General Public License as published by
9# the Free Software Foundation; either version 2 of the License, or
10# (at your option) any later version.
11#
12# This program is distributed in the hope that it will be useful,
13# but WITHOUT ANY WARRANTY; without even the implied warranty of
14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15# GNU General Public License for more details.
16#
17# You should have received a copy of the GNU General Public License
18# along with this program.  If not, see <http://www.gnu.org/licenses/>.
19#
20
21import json
22import iotests
23from iotests import qemu_nbd_popen, qemu_img_pipe, log, file_path
24
25iotests.script_initialize(supported_fmts=['parallels'])
26
27nbd_sock = file_path('nbd-sock', base_dir=iotests.sock_dir)
28disk = iotests.file_path('disk')
29bitmap = 'e4f2eed0-37fe-4539-b50b-85d2e7fd235f'
30nbd_opts = f'driver=nbd,server.type=unix,server.path={nbd_sock}' \
31        f',x-dirty-bitmap=qemu:dirty-bitmap:{bitmap}'
32
33
34iotests.unarchive_sample_image('parallels-with-bitmap', disk)
35
36
37with qemu_nbd_popen('--read-only', f'--socket={nbd_sock}',
38                    f'--bitmap={bitmap}', '-f', iotests.imgfmt, disk):
39    out = qemu_img_pipe('map', '--output=json', '--image-opts', nbd_opts)
40    chunks = json.loads(out)
41    cluster = 64 * 1024
42
43    log('dirty clusters (cluster size is 64K):')
44    for c in chunks:
45        assert c['start'] % cluster == 0
46        assert c['length'] % cluster == 0
47        if c['data']:
48            continue
49
50        a = c['start'] // cluster
51        b = (c['start'] + c['length']) // cluster
52        if b - a > 1:
53            log(f'{a}-{b-1}')
54        else:
55            log(a)
56