1#!/usr/bin/env python3 2# 3# Simple mirror test 4# 5# Copyright (c) 2018 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 sys 22import os 23import iotests 24from iotests import qemu_img_create, qemu_io, file_path, log 25 26sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'python')) 27 28from qemu.machine import QEMUMachine 29 30iotests.script_initialize(supported_fmts=['qcow2']) 31 32# Note: 33# This test was added to check that mirror dead-lock was fixed (see previous 34# commit before this test addition). 35# And it didn't reproduce if at least one of the following: 36# 1. use small image size 37# 2. use raw format (not qcow2) 38# 3. drop kvm and use iotests.VM() (maybe, because of qtest) (however, it still 39# reproduces, if just drop kvm, but gdb failed to produce full backtraces 40# for me) 41# 4. add iothread 42 43size = 1 * 1024 * 1024 * 1024 44 45disk = file_path('disk') 46 47# prepare source image 48qemu_img_create('-f', iotests.imgfmt, '-o', 'preallocation=metadata', disk, 49 str(size)) 50 51vm = QEMUMachine(iotests.qemu_prog) 52vm.add_args('-accel', 'kvm', '-accel', 'tcg') 53if iotests.qemu_default_machine == 's390-ccw-virtio': 54 vm.add_args('-no-shutdown') 55vm.add_args('-drive', 'id=src,file=' + disk) 56vm.launch() 57 58log(vm.qmp('object-add', qom_type='throttle-group', id='tg0', 59 props={ 'x-bps-total': size })) 60 61log(vm.qmp('blockdev-add', 62 **{ 'node-name': 'target', 63 'driver': 'throttle', 64 'throttle-group': 'tg0', 65 'file': { 66 'driver': 'null-co', 67 'size': size 68 } })) 69 70log(vm.qmp('blockdev-mirror', device='src', target='target', sync='full')) 71 72try: 73 vm.event_wait('BLOCK_JOB_READY', timeout=10.0) 74except: 75 vm.shutdown() 76 raise 77 78vm.shutdown() 79