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1#!/usr/bin/env python3 2# group: rw quick 3# 4# Tests dirty-bitmap backup with unaligned bitmap granularity 5# 6# Copyright (c) 2020 Proxmox Server Solutions 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# owner=s.reiter@proxmox.com 22 23import iotests 24from iotests import qemu_img_create, qemu_img_log, file_path 25 26iotests.script_initialize(supported_fmts=['qcow2'], 27 supported_protocols=['file']) 28 29test_img = file_path('test.qcow2') 30target_img = file_path('target.qcow2') 31 32# unaligned by one byte 33image_len = 4097 34bitmap_granularity = 4096 35 36qemu_img_create('-f', iotests.imgfmt, test_img, str(image_len)) 37 38# create VM 39vm = iotests.VM().add_drive(test_img) 40vm.launch() 41 42# write to the entire image 43vm.hmp_qemu_io('drive0', 'write -P0x16 0 4096'); 44vm.hmp_qemu_io('drive0', 'write -P0x17 4096 1'); 45 46# do backup and wait for completion 47vm.qmp('drive-backup', **{ 48 'device': 'drive0', 49 'sync': 'full', 50 'target': target_img 51}) 52 53event = vm.event_wait(name='BLOCK_JOB_COMPLETED', 54 match={'data': {'device': 'drive0'}}, 55 timeout=5.0) 56 57# shutdown to sync images 58vm.shutdown() 59 60# backup succeeded, check if image is correct 61qemu_img_log('compare', test_img, target_img)