3 # Test for dumping of qcow2 image metadata
5 # Copyright (c) 2020 Virtuozzo International GmbH
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.
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.
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
23 from iotests import qemu_img_create, qemu_io, file_path, log, filter_qemu_io
25 iotests.script_initialize(supported_fmts=['qcow2'])
27 disk = file_path('disk')
31 def create_bitmap(bitmap_number, disabled):
32 granularity = 1 << (14 + bitmap_number)
33 bitmap_name = 'bitmap-' + str(bitmap_number)
34 args = ['bitmap', '--add', '-g', f'{granularity}', '-f', iotests.imgfmt,
37 args.append('--disable')
39 iotests.qemu_img_pipe(*args)
42 def write_to_disk(offset, size):
43 write = f'write {offset} {size}'
44 log(qemu_io('-c', write, disk), filters=[filter_qemu_io])
47 def add_bitmap(num, begin, end, disabled):
48 log(f'Add bitmap {num}')
49 create_bitmap(num, disabled)
50 for i in range(begin, end):
51 write_to_disk((i) * chunk, chunk)
55 qemu_img_create('-f', iotests.imgfmt, disk, '10M')
57 add_bitmap(1, 0, 6, False)
58 add_bitmap(2, 6, 8, True)
59 dump = ['qcow2.py', disk, 'dump-header']
61 # Dump the metadata in JSON format