1#!/usr/bin/env python3 2# group: quick 3# 4# Simple mirror test 5# 6# Copyright (c) 2018 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 sys 23import os 24import iotests 25from iotests import qemu_img_create, qemu_io, file_path, log 26 27from qemu.machine import QEMUMachine 28 29iotests.script_initialize(supported_fmts=['qcow2']) 30 31# Note: 32# This test was added to check that mirror dead-lock was fixed (see previous 33# commit before this test addition). 34# And it didn't reproduce if at least one of the following: 35# 1. use small image size 36# 2. use raw format (not qcow2) 37# 3. drop kvm and use iotests.VM() (maybe, because of qtest) (however, it still 38# reproduces, if just drop kvm, but gdb failed to produce full backtraces 39# for me) 40# 4. add iothread 41 42size = 1 * 1024 * 1024 * 1024 43 44disk = file_path('disk') 45 46# prepare source image 47qemu_img_create('-f', iotests.imgfmt, '-o', 'preallocation=metadata', disk, 48 str(size)) 49 50vm = QEMUMachine(iotests.qemu_prog) 51vm.add_args('-accel', 'kvm', '-accel', 'tcg') 52if iotests.qemu_default_machine == 's390-ccw-virtio': 53 vm.add_args('-no-shutdown') 54vm.add_args('-drive', 'id=src,file=' + disk) 55vm.launch() 56 57log(vm.qmp('object-add', qom_type='throttle-group', id='tg0', 58 limits={'bps-total': size})) 59 60log(vm.qmp('blockdev-add', 61 **{ 'node-name': 'target', 62 'driver': 'throttle', 63 'throttle-group': 'tg0', 64 'file': { 65 'driver': 'null-co', 66 'size': size 67 } })) 68 69log(vm.qmp('blockdev-mirror', device='src', target='target', sync='full')) 70 71try: 72 vm.event_wait('BLOCK_JOB_READY', timeout=10.0) 73except: 74 vm.shutdown() 75 raise 76 77vm.shutdown() 78