1#!/usr/bin/env python 2# 3# Tests for temporary external snapshot when we have bitmaps. 4# 5# Copyright (c) 2019 Virtuozzo International GmbH. All rights reserved. 6# 7# This program is free software; you can redistribute it and/or modify 8# it under the terms of the GNU General Public License as published by 9# the Free Software Foundation; either version 2 of the License, or 10# (at your option) any later version. 11# 12# This program is distributed in the hope that it will be useful, 13# but WITHOUT ANY WARRANTY; without even the implied warranty of 14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15# GNU General Public License for more details. 16# 17# You should have received a copy of the GNU General Public License 18# along with this program. If not, see <http://www.gnu.org/licenses/>. 19# 20 21import iotests 22from iotests import qemu_img_create, file_path, log, filter_qmp_event 23 24iotests.verify_image_format(supported_fmts=['qcow2']) 25 26base, top = file_path('base', 'top') 27size = 64 * 1024 * 3 28 29 30def print_bitmap(msg, vm): 31 result = vm.qmp('query-block')['return'][0] 32 if 'dirty-bitmaps' in result: 33 bitmap = result['dirty-bitmaps'][0] 34 log('{}: name={} dirty-clusters={}'.format(msg, bitmap['name'], 35 bitmap['count'] // 64 // 1024)) 36 else: 37 log(msg + ': not found') 38 39 40def test(persistent, restart): 41 assert persistent or not restart 42 log("\nTestcase {}persistent {} restart\n".format( 43 '' if persistent else 'non-', 'with' if restart else 'without')) 44 45 qemu_img_create('-f', iotests.imgfmt, base, str(size)) 46 47 vm = iotests.VM().add_drive(base) 48 vm.launch() 49 50 vm.qmp_log('block-dirty-bitmap-add', node='drive0', name='bitmap0', 51 persistent=persistent) 52 vm.hmp_qemu_io('drive0', 'write 0 64K') 53 print_bitmap('initial bitmap', vm) 54 55 vm.qmp_log('blockdev-snapshot-sync', device='drive0', snapshot_file=top, 56 format=iotests.imgfmt, filters=[iotests.filter_qmp_testfiles]) 57 vm.hmp_qemu_io('drive0', 'write 64K 512') 58 print_bitmap('check that no bitmaps are in snapshot', vm) 59 60 if restart: 61 log("... Restart ...") 62 vm.shutdown() 63 vm = iotests.VM().add_drive(top) 64 vm.launch() 65 66 vm.qmp_log('block-commit', device='drive0', top=top, 67 filters=[iotests.filter_qmp_testfiles]) 68 ev = vm.events_wait((('BLOCK_JOB_READY', None), 69 ('BLOCK_JOB_COMPLETED', None))) 70 log(filter_qmp_event(ev)) 71 if (ev['event'] == 'BLOCK_JOB_COMPLETED'): 72 vm.shutdown() 73 log(vm.get_log()) 74 exit() 75 76 vm.qmp_log('block-job-complete', device='drive0') 77 ev = vm.event_wait('BLOCK_JOB_COMPLETED') 78 log(filter_qmp_event(ev)) 79 print_bitmap('check bitmap after commit', vm) 80 81 vm.hmp_qemu_io('drive0', 'write 128K 64K') 82 print_bitmap('check updated bitmap', vm) 83 84 vm.shutdown() 85 86 87test(persistent=False, restart=False) 88test(persistent=True, restart=False) 89test(persistent=True, restart=True) 90