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#!/usr/bin/env python3
#
# Tests dirty-bitmap backup with unaligned bitmap granularity
#
# Copyright (c) 2020 Proxmox Server Solutions
#
# 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 <http://www.gnu.org/licenses/>.
#
# owner=s.reiter@proxmox.com
import iotests
from iotests import qemu_img_create, qemu_img_log, file_path
iotests.script_initialize(supported_fmts=['qcow2'],
supported_protocols=['file'])
test_img = file_path('test.qcow2')
target_img = file_path('target.qcow2')
# unaligned by one byte
image_len = 4097
bitmap_granularity = 4096
qemu_img_create('-f', iotests.imgfmt, test_img, str(image_len))
# create VM
vm = iotests.VM().add_drive(test_img)
vm.launch()
# write to the entire image
vm.hmp_qemu_io('drive0', 'write -P0x16 0 4096');
vm.hmp_qemu_io('drive0', 'write -P0x17 4096 1');
# do backup and wait for completion
vm.qmp('drive-backup', **{
'device': 'drive0',
'sync': 'full',
'target': target_img
})
event = vm.event_wait(name='BLOCK_JOB_COMPLETED',
match={'data': {'device': 'drive0'}},
timeout=5.0)
# shutdown to sync images
vm.shutdown()
# backup succeeded, check if image is correct
qemu_img_log('compare', test_img, target_img)
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