#!/usr/bin/env python3
#
# Tests for temporary external snapshot when we have bitmaps.
#
# Copyright (c) 2019 Virtuozzo International GmbH. All rights reserved.
#
# 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/>.
#
import iotests
from iotests import qemu_img_create, file_path, log, filter_qmp_event
iotests.script_initialize(
supported_fmts=['qcow2']
)
base, top = file_path('base', 'top')
size = 64 * 1024 * 3
def print_bitmap(msg, vm):
result = vm.qmp('query-block')['return'][0]
if 'dirty-bitmaps' in result:
bitmap = result['dirty-bitmaps'][0]
log('{}: name={} dirty-clusters={}'.format(msg, bitmap['name'],
bitmap['count'] // 64 // 1024))
else:
log(msg + ': not found')
def test(persistent, restart):
assert persistent or not restart
log("\nTestcase {}persistent {} restart\n".format(
'' if persistent else 'non-', 'with' if restart else 'without'))
qemu_img_create('-f', iotests.imgfmt, base, str(size))
vm = iotests.VM().add_drive(base)
vm.launch()
vm.qmp_log('block-dirty-bitmap-add', node='drive0', name='bitmap0',
persistent=persistent)
vm.hmp_qemu_io('drive0', 'write 0 64K')
print_bitmap('initial bitmap', vm)
vm.qmp_log('blockdev-snapshot-sync', device='drive0', snapshot_file=top,
format=iotests.imgfmt, filters=[iotests.filter_qmp_testfiles])
vm.hmp_qemu_io('drive0', 'write 64K 512')
print_bitmap('check that no bitmaps are in snapshot', vm)
if restart:
log("... Restart ...")
vm.shutdown()
vm = iotests.VM().add_drive(top)
vm.launch()
vm.qmp_log('block-commit', device='drive0', top=top,
filters=[iotests.filter_qmp_testfiles])
ev = vm.events_wait((('BLOCK_JOB_READY', None),
('BLOCK_JOB_COMPLETED', None)))
log(filter_qmp_event(ev))
if (ev['event'] == 'BLOCK_JOB_COMPLETED'):
vm.shutdown()
log(vm.get_log())
exit()
vm.qmp_log('block-job-complete', device='drive0')
ev = vm.event_wait('BLOCK_JOB_COMPLETED')
log(filter_qmp_event(ev))
print_bitmap('check bitmap after commit', vm)
vm.hmp_qemu_io('drive0', 'write 128K 64K')
print_bitmap('check updated bitmap', vm)
vm.shutdown()
test(persistent=False, restart=False)
test(persistent=True, restart=False)
test(persistent=True, restart=True)
