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1 #!/usr/bin/env python3 2 # group: rw quick 3 # 4 # Test for dumping of qcow2 image metadata 5 # 6 # Copyright (c) 2020 Virtuozzo International GmbH 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 22 import iotests 23 import subprocess 24 from iotests import qemu_img_create, qemu_io_log, file_path, log, \ 25 verify_qcow2_zstd_compression 26 27 iotests.script_initialize(supported_fmts=['qcow2'], 28 unsupported_imgopts=['refcount_bits', 'compat']) 29 verify_qcow2_zstd_compression() 30 31 disk = file_path('disk') 32 chunk = 1024 * 1024 33 34 35 def create_bitmap(bitmap_number, disabled): 36 granularity = 1 << (14 + bitmap_number) 37 bitmap_name = 'bitmap-' + str(bitmap_number) 38 args = ['bitmap', '--add', '-g', f'{granularity}', '-f', iotests.imgfmt, 39 disk, bitmap_name] 40 if disabled: 41 args.append('--disable') 42 43 iotests.qemu_img(*args) 44 45 46 def write_to_disk(offset, size): 47 write = f'write {offset} {size}' 48 qemu_io_log('-c', write, disk) 49 50 51 def add_bitmap(num, begin, end, disabled): 52 log(f'Add bitmap {num}') 53 create_bitmap(num, disabled) 54 for i in range(begin, end): 55 write_to_disk((i) * chunk, chunk) 56 log('') 57 58 59 def test(compression_type: str, json_output: bool) -> None: 60 qemu_img_create('-f', iotests.imgfmt, 61 '-o', f'compression_type={compression_type}', 62 disk, '10M') 63 add_bitmap(1, 0, 6, False) 64 add_bitmap(2, 6, 8, True) 65 66 cmd = ['./qcow2.py', disk, 'dump-header'] 67 if json_output: 68 cmd.append('-j') 69 70 subprocess.run(cmd) 71 72 73 test('zlib', False) 74 test('zstd', True)