#!/usr/bin/env python3
#
# Copyright (C) 2020 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: Kevin Wolf <kwolf@redhat.com>
#
# Test the block export QAPI interfaces
import iotests
import os
# Need a writable image format (but not vpc, which rounds the image size, nor
# luks which requires special command lines)
iotests.script_initialize(
supported_fmts=['generic'],
unsupported_fmts=['luks', 'vpc'],
supported_platforms=['linux'],
)
with iotests.FilePath('image') as img, \
iotests.FilePath('socket', base_dir=iotests.sock_dir) as socket, \
iotests.VM() as vm:
iotests.qemu_img('create', '-f', iotests.imgfmt, img, '64M')
iotests.qemu_io_log('-f', iotests.imgfmt, '-c', 'write -P 0x11 0 4k', img)
iotests.log('=== Launch VM ===')
virtio_scsi_device = iotests.get_virtio_scsi_device()
vm.add_object('iothread,id=iothread0')
vm.add_blockdev(f'file,filename={img},node-name=file')
vm.add_blockdev(f'{iotests.imgfmt},file=file,node-name=fmt')
vm.add_blockdev('raw,file=file,node-name=ro,read-only=on')
vm.add_device(f'id=scsi0,driver={virtio_scsi_device},iothread=iothread0')
vm.launch()
vm.qmp_log('nbd-server-start',
addr={'type': 'unix', 'data': {'path': socket}},
filters=(iotests.filter_qmp_testfiles, ))
vm.qmp_log('query-block-exports')
iotests.log('\n=== Create a read-only NBD export ===')
vm.qmp_log('block-export-add', id='export0', type='nbd', node_name='fmt')
vm.qmp_log('query-block-exports')
iotests.qemu_nbd_list_log('-k', socket)
iotests.log('\n=== Try a few invalid things ===')
vm.qmp_log('block-export-add', id='#invalid', type='nbd', node_name='fmt')
vm.qmp_log('block-export-add', id='export0', type='nbd', node_name='fmt')
vm.qmp_log('block-export-add', id='export1', type='nbd', node_name='ro',
writable=True)
vm.qmp_log('block-export-del', id='export1')
vm.qmp_log('query-block-exports')
iotests.log('\n=== Move export to an iothread ===')
vm.qmp_log('device_add', id='sda', driver='scsi-hd', drive='fmt')
vm.qmp_log('query-block-exports')
iotests.qemu_nbd_list_log('-k', socket)
iotests.log('\n=== Add a writable export ===')
# This fails because share-rw=off
vm.qmp_log('block-export-add', id='export1', type='nbd', node_name='fmt',
name='export1', writable=True, writethrough=True,
description='This is the writable second export')
vm.qmp_log('device_del', id='sda')
event = vm.event_wait(name="DEVICE_DELETED",
match={'data': {'device': 'sda'}})
iotests.log(event, filters=[iotests.filter_qmp_event])
vm.qmp_log('device_add', id='sda', driver='scsi-hd', drive='fmt',
share_rw=True)
# Now it should work
vm.qmp_log('block-export-add', id='export1', type='nbd', node_name='fmt',
name='export1', writable=True, writethrough=True,
description='This is the writable second export')
vm.qmp_log('query-block-exports')
iotests.qemu_nbd_list_log('-k', socket)
iotests.log('\n=== Connect qemu-io to export1, try removing exports ===')
nbd_url = f'nbd+unix:///export1?socket={socket}'
qemu_io = iotests.QemuIoInteractive('-f', 'raw', nbd_url)
iotests.log(qemu_io.cmd('read -P 0x11 0 4k'),
filters=[iotests.filter_qemu_io])
iotests.log(qemu_io.cmd('write -P 0x22 4k 4k'),
filters=[iotests.filter_qemu_io])
vm.qmp_log('block-export-del', id='export1')
vm.qmp_log('block-export-del', id='export0')
iotests.log(vm.get_qmp_events_filtered())
qemu_io.close()
vm.qmp_log('query-block-exports')
iotests.qemu_nbd_list_log('-k', socket)
iotests.log('\n=== Connect qemu-io again, try force removing ===')
qemu_io = iotests.QemuIoInteractive('-f', 'raw', nbd_url)
vm.qmp_log('block-export-del', id='export1')
vm.qmp_log('block-export-del', id='export1', mode='hard')
# This should fail now
iotests.log(qemu_io.cmd('read -P 0x11 0 4k'))
qemu_io.close()
vm.qmp_log('query-block-exports')
iotests.qemu_nbd_list_log('-k', socket)
iotests.log('\n=== Shut down QEMU ===')
vm.shutdown()
