qemu-iotests: add 203 savevm with IOThreads test

This test case will prevent future regressions with savevm and
IOThreads.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 20171207201320.19284-7-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2017-12-07 20:13:20 +00:00
parent 2362a28ea1
commit 7a9dda0d7f
3 changed files with 66 additions and 0 deletions

59
tests/qemu-iotests/203 Executable file
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@ -0,0 +1,59 @@
#!/usr/bin/env python
#
# Copyright (C) 2017 Red Hat, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# Creator/Owner: Stefan Hajnoczi <stefanha@redhat.com>
#
# Check that QMP 'migrate' with multiple drives on a single IOThread completes
# successfully. This particular command triggered a hang in the source QEMU
# process due to recursive AioContext locking in bdrv_invalidate_all() and
# BDRV_POLL_WHILE().
import iotests
iotests.verify_image_format(supported_fmts=['qcow2'])
iotests.verify_platform(['linux'])
with iotests.FilePath('disk0.img') as disk0_img_path, \
iotests.FilePath('disk1.img') as disk1_img_path, \
iotests.VM() as vm:
img_size = '10M'
iotests.qemu_img_pipe('create', '-f', iotests.imgfmt, disk0_img_path, img_size)
iotests.qemu_img_pipe('create', '-f', iotests.imgfmt, disk1_img_path, img_size)
iotests.log('Launching VM...')
(vm.add_object('iothread,id=iothread0')
.add_drive(disk0_img_path, 'node-name=drive0-node', interface='none')
.add_drive(disk1_img_path, 'node-name=drive1-node', interface='none')
.launch())
iotests.log('Setting IOThreads...')
iotests.log(vm.qmp('x-blockdev-set-iothread',
node_name='drive0-node', iothread='iothread0',
force=True))
iotests.log(vm.qmp('x-blockdev-set-iothread',
node_name='drive1-node', iothread='iothread0',
force=True))
iotests.log('Starting migration...')
iotests.log(vm.qmp('migrate', uri='exec:cat >/dev/null'))
while True:
vm.get_qmp_event(wait=60.0)
result = vm.qmp('query-migrate')
status = result.get('return', {}).get('status', None)
if status == 'completed':
break

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Launching VM...
Setting IOThreads...
{u'return': {}}
{u'return': {}}
Starting migration...
{u'return': {}}

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@ -198,3 +198,4 @@
198 rw auto
200 rw auto
202 rw auto quick
203 rw auto