1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
#!/usr/bin/env python3
# group: rw quick
#
# Test for dumping of qcow2 image metadata
#
# Copyright (c) 2020 Virtuozzo International GmbH
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
import iotests
import subprocess
from iotests import qemu_img_create, qemu_io_log, file_path, log, \
verify_qcow2_zstd_compression
iotests.script_initialize(supported_fmts=['qcow2'],
unsupported_imgopts=['refcount_bits', 'compat'])
verify_qcow2_zstd_compression()
disk = file_path('disk')
chunk = 1024 * 1024
def create_bitmap(bitmap_number, disabled):
granularity = 1 << (14 + bitmap_number)
bitmap_name = 'bitmap-' + str(bitmap_number)
args = ['bitmap', '--add', '-g', f'{granularity}', '-f', iotests.imgfmt,
disk, bitmap_name]
if disabled:
args.append('--disable')
iotests.qemu_img(*args)
def write_to_disk(offset, size):
write = f'write {offset} {size}'
qemu_io_log('-c', write, disk)
def add_bitmap(num, begin, end, disabled):
log(f'Add bitmap {num}')
create_bitmap(num, disabled)
for i in range(begin, end):
write_to_disk((i) * chunk, chunk)
log('')
def test(compression_type: str, json_output: bool) -> None:
qemu_img_create('-f', iotests.imgfmt,
'-o', f'compression_type={compression_type}',
disk, '10M')
add_bitmap(1, 0, 6, False)
add_bitmap(2, 6, 8, True)
cmd = ['./qcow2.py', disk, 'dump-header']
if json_output:
cmd.append('-j')
subprocess.run(cmd)
test('zlib', False)
test('zstd', True)
|
