4 # Test for dumping of qcow2 image metadata
6 # Copyright (c) 2020 Virtuozzo International GmbH
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.
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.
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/>.
24 from iotests import qemu_img_create, qemu_io, file_path, log, filter_qemu_io
26 iotests.script_initialize(supported_fmts=['qcow2'])
28 disk = file_path('disk')
32 def create_bitmap(bitmap_number, disabled):
33 granularity = 1 << (14 + bitmap_number)
34 bitmap_name = 'bitmap-' + str(bitmap_number)
35 args = ['bitmap', '--add', '-g', f'{granularity}', '-f', iotests.imgfmt,
38 args.append('--disable')
40 iotests.qemu_img_pipe(*args)
43 def write_to_disk(offset, size):
44 write = f'write {offset} {size}'
45 log(qemu_io('-c', write, disk), filters=[filter_qemu_io])
48 def add_bitmap(num, begin, end, disabled):
49 log(f'Add bitmap {num}')
50 create_bitmap(num, disabled)
51 for i in range(begin, end):
52 write_to_disk((i) * chunk, chunk)
56 qemu_img_create('-f', iotests.imgfmt, disk, '10M')
58 add_bitmap(1, 0, 6, False)
59 add_bitmap(2, 6, 8, True)
60 dump = ['./qcow2.py', disk, 'dump-header']
62 # Dump the metadata in JSON format