1#!/usr/bin/env python3 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.script_initialize( 25 supported_fmts=['qcow2'] 26) 27 28base, top = file_path('base', 'top') 29size = 64 * 1024 * 3 30 31 32def print_bitmap(msg, vm): 33 result = vm.qmp('query-block')['return'][0] 34 if 'dirty-bitmaps' in result: 35 bitmap = result['dirty-bitmaps'][0] 36 log('{}: name={} dirty-clusters={}'.format(msg, bitmap['name'], 37 bitmap['count'] // 64 // 1024)) 38 else: 39 log(msg + ': not found') 40 41 42def test(persistent, restart): 43 assert persistent or not restart 44 log("\nTestcase {}persistent {} restart\n".format( 45 '' if persistent else 'non-', 'with' if restart else 'without')) 46 47 qemu_img_create('-f', iotests.imgfmt, base, str(size)) 48 49 vm = iotests.VM().add_drive(base) 50 vm.launch() 51 52 vm.qmp_log('block-dirty-bitmap-add', node='drive0', name='bitmap0', 53 persistent=persistent) 54 vm.hmp_qemu_io('drive0', 'write 0 64K') 55 print_bitmap('initial bitmap', vm) 56 57 vm.qmp_log('blockdev-snapshot-sync', device='drive0', snapshot_file=top, 58 format=iotests.imgfmt, filters=[iotests.filter_qmp_testfiles]) 59 vm.hmp_qemu_io('drive0', 'write 64K 512') 60 print_bitmap('check that no bitmaps are in snapshot', vm) 61 62 if restart: 63 log("... Restart ...") 64 vm.shutdown() 65 vm = iotests.VM().add_drive(top) 66 vm.launch() 67 68 vm.qmp_log('block-commit', device='drive0', top=top, 69 filters=[iotests.filter_qmp_testfiles]) 70 ev = vm.events_wait((('BLOCK_JOB_READY', None), 71 ('BLOCK_JOB_COMPLETED', None))) 72 log(filter_qmp_event(ev)) 73 if (ev['event'] == 'BLOCK_JOB_COMPLETED'): 74 vm.shutdown() 75 log(vm.get_log()) 76 exit() 77 78 vm.qmp_log('block-job-complete', device='drive0') 79 ev = vm.event_wait('BLOCK_JOB_COMPLETED') 80 log(filter_qmp_event(ev)) 81 print_bitmap('check bitmap after commit', vm) 82 83 vm.hmp_qemu_io('drive0', 'write 128K 64K') 84 print_bitmap('check updated bitmap', vm) 85 86 vm.shutdown() 87 88 89test(persistent=False, restart=False) 90test(persistent=True, restart=False) 91test(persistent=True, restart=True) 92