From bf654b37e19eb43abca5b5b2a6eac21732b368ca Mon Sep 17 00:00:00 2001 From: Andrey Shinkevich Date: Thu, 6 Aug 2020 22:35:47 +0300 Subject: iotests: add test for QCOW2 header dump The simple script creates a QCOW2 image and fills it with some data. Two bitmaps are created as well. Then the script reads the image header with extensions from the disk by running the script qcow2.py and dumps the information to the output. Other entities, such as snapshots, may be added to the test later. Suggested-by: Eric Blake Signed-off-by: Andrey Shinkevich Reviewed-by: Eric Blake Reviewed-by: Vladimir Sementsov-Ogievskiy Message-Id: <1596742557-320265-2-git-send-email-andrey.shinkevich@virtuozzo.com> Signed-off-by: Eric Blake --- tests/qemu-iotests/303 | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100755 tests/qemu-iotests/303 (limited to 'tests/qemu-iotests/303') diff --git a/tests/qemu-iotests/303 b/tests/qemu-iotests/303 new file mode 100755 index 0000000000..e9accdc7bc --- /dev/null +++ b/tests/qemu-iotests/303 @@ -0,0 +1,60 @@ +#!/usr/bin/env python3 +# +# 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 . +# + +import iotests +import subprocess +from iotests import qemu_img_create, qemu_io, file_path, log, filter_qemu_io + +iotests.script_initialize(supported_fmts=['qcow2']) + +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_pipe(*args) + + +def write_to_disk(offset, size): + write = f'write {offset} {size}' + log(qemu_io('-c', write, disk), filters=[filter_qemu_io]) + + +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('') + + +qemu_img_create('-f', iotests.imgfmt, disk, '10M') + +add_bitmap(1, 0, 6, False) +add_bitmap(2, 6, 8, True) +dump = ['qcow2.py', disk, 'dump-header'] +subprocess.run(dump) -- cgit v1.2.3