1#!/usr/bin/env python3 2# group: rw quick 3# 4# Copyright (C) 2017 Red Hat, Inc. 5# 6# This program is free software; you can redistribute it and/or modify 7# it under the terms of the GNU General Public License as published by 8# the Free Software Foundation; either version 2 of the License, or 9# (at your option) any later version. 10# 11# This program is distributed in the hope that it will be useful, 12# but WITHOUT ANY WARRANTY; without even the implied warranty of 13# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14# GNU General Public License for more details. 15# 16# You should have received a copy of the GNU General Public License 17# along with this program. If not, see <http://www.gnu.org/licenses/>. 18# 19# Creator/Owner: Stefan Hajnoczi <stefanha@redhat.com> 20# 21# Check that QMP 'transaction' blockdev-snapshot-sync with multiple drives on a 22# single IOThread completes successfully. This particular command triggered a 23# hang due to recursive AioContext locking and BDRV_POLL_WHILE(). Protect 24# against regressions even though the AioContext lock no longer exists. 25 26import iotests 27 28iotests.script_initialize(supported_fmts=['qcow2'], 29 supported_platforms=['linux']) 30 31with iotests.FilePath('disk0.img') as disk0_img_path, \ 32 iotests.FilePath('disk1.img') as disk1_img_path, \ 33 iotests.FilePath('disk0-snap.img') as disk0_snap_img_path, \ 34 iotests.FilePath('disk1-snap.img') as disk1_snap_img_path, \ 35 iotests.VM() as vm: 36 37 img_size = '10M' 38 iotests.qemu_img_create('-f', iotests.imgfmt, disk0_img_path, img_size) 39 iotests.qemu_img_create('-f', iotests.imgfmt, disk1_img_path, img_size) 40 41 iotests.log('Launching VM...') 42 vm.launch() 43 44 iotests.log('Adding IOThread...') 45 iotests.log(vm.qmp('object-add', 46 qom_type='iothread', 47 id='iothread0')) 48 49 iotests.log('Adding blockdevs...') 50 iotests.log(vm.qmp('blockdev-add', 51 driver=iotests.imgfmt, 52 node_name='disk0', 53 file={ 54 'driver': 'file', 55 'filename': disk0_img_path, 56 })) 57 iotests.log(vm.qmp('blockdev-add', 58 driver=iotests.imgfmt, 59 node_name='disk1', 60 file={ 61 'driver': 'file', 62 'filename': disk1_img_path, 63 })) 64 65 iotests.log('Setting iothread...') 66 iotests.log(vm.qmp('x-blockdev-set-iothread', 67 node_name='disk0', 68 iothread='iothread0')) 69 iotests.log(vm.qmp('x-blockdev-set-iothread', 70 node_name='disk1', 71 iothread='iothread0')) 72 73 iotests.log('Creating external snapshots...') 74 iotests.log(vm.qmp( 75 'transaction', 76 actions=[ 77 { 78 'data': { 79 'node-name': 'disk0', 80 'snapshot-file': disk0_snap_img_path, 81 'snapshot-node-name': 'disk0-snap', 82 'mode': 'absolute-paths', 83 'format': iotests.imgfmt, 84 }, 85 'type': 'blockdev-snapshot-sync' 86 }, { 87 'data': { 88 'node-name': 'disk1', 89 'snapshot-file': disk1_snap_img_path, 90 'snapshot-node-name': 'disk1-snap', 91 'mode': 'absolute-paths', 92 'format': iotests.imgfmt 93 }, 94 'type': 'blockdev-snapshot-sync' 95 } 96 ])) 97