iotests: add 238 for throttling tgm unregister iothread segfault

#!/usr/bin/env python

#

# Regression test for throttle group member unregister segfault with iothread

#

# Copyright (c) 2019 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/>.

#

import sys

import os

import iotests

from iotests import log

sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'scripts'))

from qemu import QEMUMachine

if iotests.qemu_default_machine == 's390-ccw-virtio':

    virtio_scsi_device = 'virtio-scsi-ccw'

else:

    virtio_scsi_device = 'virtio-scsi-pci'

vm = QEMUMachine(iotests.qemu_prog)

vm.add_args('-machine', 'accel=kvm')

vm.launch()

log(vm.qmp('blockdev-add', node_name='hd0', driver='null-co'))

log(vm.qmp('object-add', qom_type='iothread', id='iothread0'))

log(vm.qmp('device_add', id='scsi0', driver=virtio_scsi_device, iothread='iothread0'))

log(vm.qmp('device_add', id='scsi-hd0', driver='scsi-hd', drive='hd0'))

log(vm.qmp('block_set_io_throttle', id='scsi-hd0', bps=0, bps_rd=0, bps_wr=0,

           iops=1000, iops_rd=0, iops_wr=0, conv_keys=False))

log(vm.qmp('device_del', id='scsi-hd0'))

vm.shutdown()

{"return": {}}

{"return": {}}

{"return": {}}

{"return": {}}

{"return": {}}

{"return": {}}

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