1#!/usr/bin/env python3 2# group: rw quick 3# 4# Tests for temporary external snapshot when we have bitmaps. 5# 6# Copyright (c) 2019 Virtuozzo International GmbH. All rights reserved. 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 22import iotests 23from iotests import qemu_img_create, file_path, log, filter_qmp_event 24 25iotests.script_initialize( 26 supported_fmts=['qcow2'] 27) 28 29base, top = file_path('base', 'top') 30size = 64 * 1024 * 3 31 32 33def print_bitmap(msg, vm): 34 result = vm.qmp('query-block')['return'][0] 35 if 'dirty-bitmaps' in result: 36 bitmap = result['dirty-bitmaps'][0] 37 log('{}: name={} dirty-clusters={}'.format(msg, bitmap['name'], 38 bitmap['count'] // 64 // 1024)) 39 else: 40 log(msg + ': not found') 41 42 43def test(persistent, restart): 44 assert persistent or not restart 45 log("\nTestcase {}persistent {} restart\n".format( 46 '' if persistent else 'non-', 'with' if restart else 'without')) 47 48 qemu_img_create('-f', iotests.imgfmt, base, str(size)) 49 50 vm = iotests.VM().add_drive(base) 51 vm.launch() 52 53 vm.qmp_log('block-dirty-bitmap-add', node='drive0', name='bitmap0', 54 persistent=persistent) 55 vm.hmp_qemu_io('drive0', 'write 0 64K') 56 print_bitmap('initial bitmap', vm) 57 58 vm.qmp_log('blockdev-snapshot-sync', device='drive0', snapshot_file=top, 59 format=iotests.imgfmt, filters=[iotests.filter_qmp_testfiles]) 60 vm.hmp_qemu_io('drive0', 'write 64K 512') 61 print_bitmap('check that no bitmaps are in snapshot', vm) 62 63 if restart: 64 log("... Restart ...") 65 vm.shutdown() 66 vm = iotests.VM().add_drive(top) 67 vm.launch() 68 69 vm.qmp_log('block-commit', device='drive0', top=top, 70 filters=[iotests.filter_qmp_testfiles]) 71 ev = vm.events_wait((('BLOCK_JOB_READY', None), 72 ('BLOCK_JOB_COMPLETED', None))) 73 log(filter_qmp_event(ev)) 74 if (ev['event'] == 'BLOCK_JOB_COMPLETED'): 75 vm.shutdown() 76 log(vm.get_log()) 77 exit() 78 79 vm.qmp_log('block-job-complete', device='drive0') 80 ev = vm.event_wait('BLOCK_JOB_COMPLETED') 81 log(filter_qmp_event(ev)) 82 print_bitmap('check bitmap after commit', vm) 83 84 vm.hmp_qemu_io('drive0', 'write 128K 64K') 85 print_bitmap('check updated bitmap', vm) 86 87 vm.shutdown() 88 89 90test(persistent=False, restart=False) 91test(persistent=True, restart=False) 92test(persistent=True, restart=True) 93