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qemu/tests/qemu-iotests/118
Max Reitz 014bb4b0e5 iotests/118: Drop 'change' test 
Commit 0afec75734 removed the 'change' QMP command, so we can no
longer test it in 118.

Fixes: 0afec75734
       ('qmp: remove deprecated "change" command')
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210126104833.57026-1-mreitz@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2021-01-26 14:36:37 +01:00

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#!/usr/bin/env python3
# group: rw
#
# Test case for media change monitor commands
#
# Copyright (C) 2015 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 os
import stat
import time
import iotests
from iotests import qemu_img
old_img = os.path.join(iotests.test_dir, 'test0.img')
new_img = os.path.join(iotests.test_dir, 'test1.img')
def interface_to_device_name(interface):
if interface == 'ide':
return 'ide-cd'
elif interface == 'floppy':
return 'floppy'
elif interface == 'scsi':
return 'scsi-cd'
else:
return None
class ChangeBaseClass(iotests.QMPTestCase):
has_opened = False
has_closed = False
device_name = 'qdev0'
use_drive = False
def process_events(self):
for event in self.vm.get_qmp_events(wait=False):
if (event['event'] == 'DEVICE_TRAY_MOVED' and
(event['data']['device'] == 'drive0' or
event['data']['id'] == self.device_name)):
if event['data']['tray-open'] == False:
self.has_closed = True
else:
self.has_opened = True
def wait_for_open(self):
if not self.has_real_tray:
return
with iotests.Timeout(3, 'Timeout while waiting for the tray to open'):
while not self.has_opened:
self.process_events()
def wait_for_close(self):
if not self.has_real_tray:
return
with iotests.Timeout(3, 'Timeout while waiting for the tray to close'):
while not self.has_closed:
self.process_events()
class GeneralChangeTestsBaseClass(ChangeBaseClass):
def test_blockdev_change_medium(self):
result = self.vm.qmp('blockdev-change-medium',
id=self.device_name, filename=new_img,
format=iotests.imgfmt)
self.assert_qmp(result, 'return', {})
self.wait_for_open()
self.wait_for_close()
result = self.vm.qmp('query-block')
if self.has_real_tray:
self.assert_qmp(result, 'return[0]/tray_open', False)
self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
def test_eject(self):
result = self.vm.qmp('eject', id=self.device_name, force=True)
self.assert_qmp(result, 'return', {})
self.wait_for_open()
result = self.vm.qmp('query-block')
if self.has_real_tray:
self.assert_qmp(result, 'return[0]/tray_open', True)
self.assert_qmp_absent(result, 'return[0]/inserted')
def test_tray_eject_change(self):
result = self.vm.qmp('eject', id=self.device_name, force=True)
self.assert_qmp(result, 'return', {})
self.wait_for_open()
result = self.vm.qmp('query-block')
if self.has_real_tray:
self.assert_qmp(result, 'return[0]/tray_open', True)
self.assert_qmp_absent(result, 'return[0]/inserted')
result = self.vm.qmp('blockdev-change-medium', id=self.device_name,
filename=new_img, format=iotests.imgfmt)
self.assert_qmp(result, 'return', {})
self.wait_for_close()
result = self.vm.qmp('query-block')
if self.has_real_tray:
self.assert_qmp(result, 'return[0]/tray_open', False)
self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
def test_tray_open_close(self):
result = self.vm.qmp('blockdev-open-tray',
id=self.device_name, force=True)
self.assert_qmp(result, 'return', {})
self.wait_for_open()
result = self.vm.qmp('query-block')
if self.has_real_tray:
self.assert_qmp(result, 'return[0]/tray_open', True)
if self.was_empty == True:
self.assert_qmp_absent(result, 'return[0]/inserted')
else:
self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
result = self.vm.qmp('blockdev-close-tray', id=self.device_name)
self.assert_qmp(result, 'return', {})
if self.has_real_tray or not self.was_empty:
self.wait_for_close()
result = self.vm.qmp('query-block')
if self.has_real_tray:
self.assert_qmp(result, 'return[0]/tray_open', False)
if self.was_empty == True:
self.assert_qmp_absent(result, 'return[0]/inserted')
else:
self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
def test_tray_eject_close(self):
result = self.vm.qmp('eject', id=self.device_name, force=True)
self.assert_qmp(result, 'return', {})
self.wait_for_open()
result = self.vm.qmp('query-block')
if self.has_real_tray:
self.assert_qmp(result, 'return[0]/tray_open', True)
self.assert_qmp_absent(result, 'return[0]/inserted')
result = self.vm.qmp('blockdev-close-tray', id=self.device_name)
self.assert_qmp(result, 'return', {})
self.wait_for_close()
result = self.vm.qmp('query-block')
if self.has_real_tray:
self.assert_qmp(result, 'return[0]/tray_open', False)
self.assert_qmp_absent(result, 'return[0]/inserted')
def test_tray_open_change(self):
result = self.vm.qmp('blockdev-open-tray', id=self.device_name,
force=True)
self.assert_qmp(result, 'return', {})
self.wait_for_open()
result = self.vm.qmp('query-block')
if self.has_real_tray:
self.assert_qmp(result, 'return[0]/tray_open', True)
if self.was_empty == True:
self.assert_qmp_absent(result, 'return[0]/inserted')
else:
self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
result = self.vm.qmp('blockdev-change-medium', id=self.device_name,
filename=new_img,
format=iotests.imgfmt)
self.assert_qmp(result, 'return', {})
self.wait_for_close()
result = self.vm.qmp('query-block')
if self.has_real_tray:
self.assert_qmp(result, 'return[0]/tray_open', False)
self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
def test_cycle(self, read_only_node=False):
result = self.vm.qmp('blockdev-add',
node_name='new',
driver=iotests.imgfmt,
read_only=read_only_node,
file={'filename': new_img,
'driver': 'file'})
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('blockdev-open-tray',
id=self.device_name, force=True)
self.assert_qmp(result, 'return', {})
self.wait_for_open()
result = self.vm.qmp('query-block')
if self.has_real_tray:
self.assert_qmp(result, 'return[0]/tray_open', True)
if self.was_empty == True:
self.assert_qmp_absent(result, 'return[0]/inserted')
else:
self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
result = self.vm.qmp('blockdev-remove-medium',
id=self.device_name)
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('query-block')
if self.has_real_tray:
self.assert_qmp(result, 'return[0]/tray_open', True)
self.assert_qmp_absent(result, 'return[0]/inserted')
result = self.vm.qmp('blockdev-insert-medium',
id=self.device_name, node_name='new')
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('query-block')
if self.has_real_tray:
self.assert_qmp(result, 'return[0]/tray_open', True)
self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
result = self.vm.qmp('blockdev-close-tray', id=self.device_name)
self.assert_qmp(result, 'return', {})
self.wait_for_close()
result = self.vm.qmp('query-block')
if self.has_real_tray:
self.assert_qmp(result, 'return[0]/tray_open', False)
self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
def test_cycle_read_only_media(self):
self.test_cycle(True)
def test_close_on_closed(self):
result = self.vm.qmp('blockdev-close-tray', id=self.device_name)
# Should be a no-op
self.assert_qmp(result, 'return', {})
self.assertEqual(self.vm.get_qmp_events(wait=False), [])
def test_remove_on_closed(self):
if not self.has_real_tray:
return
result = self.vm.qmp('blockdev-remove-medium', id=self.device_name)
self.assert_qmp(result, 'error/class', 'GenericError')
def test_insert_on_closed(self):
if not self.has_real_tray:
return
result = self.vm.qmp('blockdev-add',
node_name='new',
driver=iotests.imgfmt,
file={'filename': new_img,
'driver': 'file'})
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('blockdev-insert-medium', id=self.device_name,
node_name='new')
self.assert_qmp(result, 'error/class', 'GenericError')
class TestInitiallyFilled(GeneralChangeTestsBaseClass):
was_empty = False
def setUp(self):
qemu_img('create', '-f', iotests.imgfmt, old_img, '1440k')
qemu_img('create', '-f', iotests.imgfmt, new_img, '1440k')
self.vm = iotests.VM()
if self.use_drive:
self.vm.add_drive(old_img, 'media=%s' % self.media, 'none')
else:
self.vm.add_blockdev([ 'node-name=drive0',
'driver=%s' % iotests.imgfmt,
'file.driver=file',
'file.filename=%s' % old_img ])
if self.interface == 'scsi':
self.vm.add_device('virtio-scsi-pci')
self.vm.add_device('%s,drive=drive0,id=%s' %
(interface_to_device_name(self.interface),
self.device_name))
self.vm.launch()
def tearDown(self):
self.vm.shutdown()
os.remove(old_img)
os.remove(new_img)
def test_insert_on_filled(self):
result = self.vm.qmp('blockdev-add',
node_name='new',
driver=iotests.imgfmt,
file={'filename': new_img,
'driver': 'file'})
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('blockdev-open-tray', id=self.device_name)
self.assert_qmp(result, 'return', {})
self.wait_for_open()
result = self.vm.qmp('blockdev-insert-medium', id=self.device_name,
node_name='new')
self.assert_qmp(result, 'error/class', 'GenericError')
class TestInitiallyEmpty(GeneralChangeTestsBaseClass):
was_empty = True
def setUp(self):
qemu_img('create', '-f', iotests.imgfmt, new_img, '1440k')
self.vm = iotests.VM()
if self.use_drive:
self.vm.add_drive(None, 'media=%s' % self.media, 'none')
if self.interface == 'scsi':
self.vm.add_device('virtio-scsi-pci')
self.vm.add_device('%s,%sid=%s' %
(interface_to_device_name(self.interface),
'drive=drive0,' if self.use_drive else '',
self.device_name))
self.vm.launch()
def tearDown(self):
self.vm.shutdown()
os.remove(new_img)
def test_remove_on_empty(self):
result = self.vm.qmp('blockdev-open-tray', id=self.device_name)
self.assert_qmp(result, 'return', {})
self.wait_for_open()
result = self.vm.qmp('blockdev-remove-medium', id=self.device_name)
# Should be a no-op
self.assert_qmp(result, 'return', {})
# Do this in a function to avoid leaking variables like case into the global
# name space (otherwise tests would be run for the abstract base classes)
def create_basic_test_classes():
for (media, interface, has_real_tray) in [ ('cdrom', 'ide', True),
('cdrom', 'scsi', True),
('disk', 'floppy', False) ]:
for case in [ TestInitiallyFilled, TestInitiallyEmpty ]:
for use_drive in [ True, False ]:
attr = { 'media': media,
'interface': interface,
'has_real_tray': has_real_tray,
'use_drive': use_drive }
name = '%s_%s_%s_%s' % (case.__name__, media, interface,
'drive' if use_drive else 'blockdev')
globals()[name] = type(name, (case, ), attr)
create_basic_test_classes()
class TestChangeReadOnly(ChangeBaseClass):
device_name = 'qdev0'
def setUp(self):
qemu_img('create', '-f', iotests.imgfmt, old_img, '1440k')
qemu_img('create', '-f', iotests.imgfmt, new_img, '1440k')
self.vm = iotests.VM()
def tearDown(self):
self.vm.shutdown()
os.chmod(old_img, 0o666)
os.chmod(new_img, 0o666)
os.remove(old_img)
os.remove(new_img)
def test_ro_ro_retain(self):
os.chmod(old_img, 0o444)
os.chmod(new_img, 0o444)
self.vm.add_drive(old_img, 'media=disk,read-only=on', 'none')
self.vm.add_device('floppy,drive=drive0,id=%s' % self.device_name)
self.vm.launch()
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/ro', True)
self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
result = self.vm.qmp('blockdev-change-medium', id=self.device_name,
filename=new_img,
format=iotests.imgfmt,
read_only_mode='retain')
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/ro', True)
self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
def test_ro_rw_retain(self):
os.chmod(old_img, 0o444)
self.vm.add_drive(old_img, 'media=disk,read-only=on', 'none')
self.vm.add_device('floppy,drive=drive0,id=%s' % self.device_name)
self.vm.launch()
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/ro', True)
self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
result = self.vm.qmp('blockdev-change-medium', id=self.device_name,
filename=new_img,
format=iotests.imgfmt,
read_only_mode='retain')
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/ro', True)
self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
@iotests.skip_if_user_is_root
def test_rw_ro_retain(self):
os.chmod(new_img, 0o444)
self.vm.add_drive(old_img, 'media=disk', 'none')
self.vm.add_device('floppy,drive=drive0,id=%s' % self.device_name)
self.vm.launch()
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/ro', False)
self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
result = self.vm.qmp('blockdev-change-medium', id=self.device_name,
filename=new_img,
format=iotests.imgfmt,
read_only_mode='retain')
self.assert_qmp(result, 'error/class', 'GenericError')
self.assertEqual(self.vm.get_qmp_events(wait=False), [])
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/ro', False)
self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
def test_ro_rw(self):
os.chmod(old_img, 0o444)
self.vm.add_drive(old_img, 'media=disk,read-only=on', 'none')
self.vm.add_device('floppy,drive=drive0,id=%s' % self.device_name)
self.vm.launch()
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/ro', True)
self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
result = self.vm.qmp('blockdev-change-medium',
id=self.device_name,
filename=new_img,
format=iotests.imgfmt,
read_only_mode='read-write')
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/ro', False)
self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
def test_rw_ro(self):
os.chmod(new_img, 0o444)
self.vm.add_drive(old_img, 'media=disk', 'none')
self.vm.add_device('floppy,drive=drive0,id=%s' % self.device_name)
self.vm.launch()
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/ro', False)
self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
result = self.vm.qmp('blockdev-change-medium',
id=self.device_name,
filename=new_img,
format=iotests.imgfmt,
read_only_mode='read-only')
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/ro', True)
self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
def test_make_rw_ro(self):
self.vm.add_drive(old_img, 'media=disk', 'none')
self.vm.add_device('floppy,drive=drive0,id=%s' % self.device_name)
self.vm.launch()
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/ro', False)
self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
result = self.vm.qmp('blockdev-change-medium',
id=self.device_name,
filename=new_img,
format=iotests.imgfmt,
read_only_mode='read-only')
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/ro', True)
self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
@iotests.skip_if_user_is_root
def test_make_ro_rw(self):
os.chmod(new_img, 0o444)
self.vm.add_drive(old_img, 'media=disk', 'none')
self.vm.add_device('floppy,drive=drive0,id=%s' % self.device_name)
self.vm.launch()
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/ro', False)
self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
result = self.vm.qmp('blockdev-change-medium',
id=self.device_name,
filename=new_img,
format=iotests.imgfmt,
read_only_mode='read-write')
self.assert_qmp(result, 'error/class', 'GenericError')
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/ro', False)
self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
def test_make_rw_ro_by_retain(self):
os.chmod(old_img, 0o444)
self.vm.add_drive(old_img, 'media=disk,read-only=on', 'none')
self.vm.add_device('floppy,drive=drive0,id=%s' % self.device_name)
self.vm.launch()
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/ro', True)
self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
result = self.vm.qmp('blockdev-change-medium', id=self.device_name,
filename=new_img,
format=iotests.imgfmt,
read_only_mode='retain')
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/ro', True)
self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
@iotests.skip_if_user_is_root
def test_make_ro_rw_by_retain(self):
os.chmod(new_img, 0o444)
self.vm.add_drive(old_img, 'media=disk', 'none')
self.vm.add_device('floppy,drive=drive0,id=%s' % self.device_name)
self.vm.launch()
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/ro', False)
self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
result = self.vm.qmp('blockdev-change-medium', id=self.device_name,
filename=new_img,
format=iotests.imgfmt,
read_only_mode='retain')
self.assert_qmp(result, 'error/class', 'GenericError')
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/ro', False)
self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
def test_rw_ro_cycle(self):
os.chmod(new_img, 0o444)
self.vm.add_drive(old_img, 'media=disk', 'none')
self.vm.add_device('floppy,drive=drive0,id=%s' % self.device_name)
self.vm.launch()
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/ro', False)
self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
result = self.vm.qmp('blockdev-add',
node_name='new',
driver=iotests.imgfmt,
read_only=True,
file={'filename': new_img,
'driver': 'file'})
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/ro', False)
self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
result = self.vm.qmp('blockdev-remove-medium', id=self.device_name)
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('query-block')
self.assert_qmp_absent(result, 'return[0]/inserted')
result = self.vm.qmp('blockdev-insert-medium', id=self.device_name,
node_name='new')
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/ro', True)
self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/ro', True)
self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
GeneralChangeTestsBaseClass = None
TestInitiallyFilled = None
TestInitiallyEmpty = None
class TestBlockJobsAfterCycle(ChangeBaseClass):
device_name = 'qdev0'
def setUp(self):
qemu_img('create', '-f', iotests.imgfmt, old_img, '1440K')
self.vm = iotests.VM()
self.vm.add_drive_raw("id=drive0,driver=null-co,if=none")
self.vm.add_device('floppy,drive=drive0,id=%s' % self.device_name)
self.vm.launch()
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/image/format', 'null-co')
# For device-less BBs, calling blockdev-open-tray or blockdev-close-tray
# is not necessary
result = self.vm.qmp('blockdev-remove-medium', id=self.device_name)
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('query-block')
self.assert_qmp_absent(result, 'return[0]/inserted')
result = self.vm.qmp('blockdev-add',
node_name='node0',
driver=iotests.imgfmt,
file={'filename': old_img,
'driver': 'file'})
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('blockdev-insert-medium', id=self.device_name,
node_name='node0')
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
def tearDown(self):
self.vm.shutdown()
os.remove(old_img)
try:
os.remove(new_img)
except OSError:
pass
# We need backing file support
@iotests.skip_for_formats(('vpc', 'parallels', 'qcow', 'vdi', 'vmdk', 'raw',
'vhdx'))
def test_snapshot_and_commit(self):
result = self.vm.qmp('blockdev-snapshot-sync', device='drive0',
snapshot_file=new_img,
format=iotests.imgfmt)
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
self.assert_qmp(result,
'return[0]/inserted/image/backing-image/filename',
old_img)
result = self.vm.qmp('block-commit', device='drive0')
self.assert_qmp(result, 'return', {})
self.vm.event_wait(name='BLOCK_JOB_READY')
result = self.vm.qmp('query-block-jobs')
self.assert_qmp(result, 'return[0]/device', 'drive0')
result = self.vm.qmp('block-job-complete', device='drive0')
self.assert_qmp(result, 'return', {})
self.vm.event_wait(name='BLOCK_JOB_COMPLETED')
if __name__ == '__main__':
if iotests.qemu_default_machine != 'pc':
# We need floppy and IDE CD-ROM
iotests.notrun('not suitable for this machine type: %s' %
iotests.qemu_default_machine)
# Need to support image creation
iotests.main(supported_fmts=['vpc', 'parallels', 'qcow', 'vdi', 'qcow2',
'vmdk', 'raw', 'vhdx', 'qed'],
supported_protocols=['file'])
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