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 22 import sys 23 import os 24 import iotests 25 from iotests import qemu_img_create, qemu_io, file_path, log 26 27 from qemu.machine import QEMUMachine 28 29 iotests.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 42 size = 1 * 1024 * 1024 * 1024 43 44 disk = file_path('disk') 45 46 # prepare source image 47 qemu_img_create('-f', iotests.imgfmt, '-o', 'preallocation=metadata', disk, 48 str(size)) 49 50 vm = QEMUMachine(iotests.qemu_prog) 51 vm.add_args('-accel', 'kvm', '-accel', 'tcg') 52 if iotests.qemu_default_machine == 's390-ccw-virtio': 53 vm.add_args('-no-shutdown') 54 vm.add_args('-drive', 'id=src,file=' + disk) 55 vm.launch() 56 57 log(vm.qmp('object-add', qom_type='throttle-group', id='tg0', 58 limits={'bps-total': size})) 59 60 log(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 69 log(vm.qmp('blockdev-mirror', device='src', target='target', sync='full')) 70 71 try: 72 vm.event_wait('BLOCK_JOB_READY', timeout=10.0) 73 except: 74 vm.shutdown() 75 raise 76 77 vm.shutdown() 78