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75 lines
2.1 KiB
Python
75 lines
2.1 KiB
Python
#!/usr/bin/env python3
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# group: rw quick
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#
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# Test for dumping of qcow2 image metadata
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#
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# Copyright (c) 2020 Virtuozzo International GmbH
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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import iotests
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import subprocess
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from iotests import qemu_img_create, qemu_io_log, file_path, log, \
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verify_qcow2_zstd_compression
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iotests.script_initialize(supported_fmts=['qcow2'],
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unsupported_imgopts=['refcount_bits', 'compat'])
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verify_qcow2_zstd_compression()
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disk = file_path('disk')
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chunk = 1024 * 1024
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def create_bitmap(bitmap_number, disabled):
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granularity = 1 << (14 + bitmap_number)
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bitmap_name = 'bitmap-' + str(bitmap_number)
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args = ['bitmap', '--add', '-g', f'{granularity}', '-f', iotests.imgfmt,
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disk, bitmap_name]
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if disabled:
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args.append('--disable')
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iotests.qemu_img(*args)
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def write_to_disk(offset, size):
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write = f'write {offset} {size}'
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qemu_io_log('-c', write, disk)
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def add_bitmap(num, begin, end, disabled):
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log(f'Add bitmap {num}')
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create_bitmap(num, disabled)
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for i in range(begin, end):
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write_to_disk((i) * chunk, chunk)
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log('')
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def test(compression_type: str, json_output: bool) -> None:
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qemu_img_create('-f', iotests.imgfmt,
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'-o', f'compression_type={compression_type}',
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disk, '10M')
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add_bitmap(1, 0, 6, False)
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add_bitmap(2, 6, 8, True)
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cmd = ['./qcow2.py', disk, 'dump-header']
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if json_output:
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cmd.append('-j')
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subprocess.run(cmd)
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test('zlib', False)
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test('zstd', True)
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