| 1 | #!/usr/bin/env python3 |
| 2 | # group: rw auto migration 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 'migrate' with multiple drives on a single IOThread completes |
| 22 | # successfully. This particular command triggered a hang in the source QEMU |
| 23 | # process due to recursive AioContext locking in bdrv_invalidate_all() and |
| 24 | # BDRV_POLL_WHILE(). Protect against regressions even though the AioContext |
| 25 | # lock no longer exists. |
| 26 | |
| 27 | import iotests |
| 28 | |
| 29 | iotests.script_initialize(supported_fmts=['qcow2'], |
| 30 | supported_platforms=['linux']) |
| 31 | |
| 32 | with iotests.FilePath('disk0.img') as disk0_img_path, \ |
| 33 | iotests.FilePath('disk1.img') as disk1_img_path, \ |
| 34 | iotests.VM() as vm: |
| 35 | |
| 36 | img_size = '10M' |
| 37 | iotests.qemu_img_create('-f', iotests.imgfmt, disk0_img_path, img_size) |
| 38 | iotests.qemu_img_create('-f', iotests.imgfmt, disk1_img_path, img_size) |
| 39 | |
| 40 | iotests.log('Launching VM...') |
| 41 | (vm.add_object('iothread,id=iothread0') |
| 42 | .add_drive(disk0_img_path, 'node-name=drive0-node', interface='none') |
| 43 | .add_drive(disk1_img_path, 'node-name=drive1-node', interface='none') |
| 44 | .launch()) |
| 45 | |
| 46 | iotests.log('Setting IOThreads...') |
| 47 | iotests.log(vm.qmp('x-blockdev-set-iothread', |
| 48 | node_name='drive0-node', iothread='iothread0', |
| 49 | force=True)) |
| 50 | iotests.log(vm.qmp('x-blockdev-set-iothread', |
| 51 | node_name='drive1-node', iothread='iothread0', |
| 52 | force=True)) |
| 53 | |
| 54 | iotests.log('Enabling migration QMP events...') |
| 55 | iotests.log(vm.qmp('migrate-set-capabilities', capabilities=[ |
| 56 | { |
| 57 | 'capability': 'events', |
| 58 | 'state': True |
| 59 | } |
| 60 | ])) |
| 61 | |
| 62 | iotests.log('Starting migration...') |
| 63 | iotests.log(vm.qmp('migrate', uri='exec:cat >/dev/null')) |
| 64 | while True: |
| 65 | event = vm.event_wait('MIGRATION') |
| 66 | iotests.log(event, filters=[iotests.filter_qmp_event]) |
| 67 | if event['data']['status'] == 'completed': |
| 68 | break |