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#!/usr/bin/env python
#
# Test case for NBD's blockdev-add interface
#
# Copyright (C) 2016 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 socket
import stat
import time
import iotests
from iotests import cachemode, imgfmt, qemu_img, qemu_nbd
NBD_PORT = 10811
test_img = os.path.join(iotests.test_dir, 'test.img')
unix_socket = os.path.join(iotests.test_dir, 'nbd.socket')
class NBDBlockdevAddBase(iotests.QMPTestCase):
def blockdev_add_options(self, address, export=None):
options = { 'node-name': 'nbd-blockdev',
'driver': 'raw',
'file': {
'driver': 'nbd',
'server': address
} }
if export is not None:
options['file']['export'] = export
return options
def client_test(self, filename, address, export=None):
bao = self.blockdev_add_options(address, export)
result = self.vm.qmp('blockdev-add', **bao)
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('query-named-block-nodes')
for node in result['return']:
if node['node-name'] == 'nbd-blockdev':
if isinstance(filename, str):
self.assert_qmp(node, 'image/filename', filename)
else:
self.assert_json_filename_equal(node['image']['filename'],
filename)
break
result = self.vm.qmp('x-blockdev-del', node_name='nbd-blockdev')
self.assert_qmp(result, 'return', {})
class QemuNBD(NBDBlockdevAddBase):
def setUp(self):
qemu_img('create', '-f', iotests.imgfmt, test_img, '64k')
self.vm = iotests.VM()
self.vm.launch()
def tearDown(self):
self.vm.shutdown()
os.remove(test_img)
try:
os.remove(unix_socket)
except OSError:
pass
def _server_up(self, *args):
self.assertEqual(qemu_nbd('-f', imgfmt, test_img, *args), 0)
def test_inet(self):
self._server_up('-p', str(NBD_PORT))
address = { 'type': 'inet',
'data': {
'host': 'localhost',
'port': str(NBD_PORT)
} }
self.client_test('nbd://localhost:%i' % NBD_PORT, address)
def test_unix(self):
self._server_up('-k', unix_socket)
address = { 'type': 'unix',
'data': { 'path': unix_socket } }
self.client_test('nbd+unix://?socket=' + unix_socket, address)
class BuiltinNBD(NBDBlockdevAddBase):
def setUp(self):
qemu_img('create', '-f', iotests.imgfmt, test_img, '64k')
self.vm = iotests.VM()
self.vm.launch()
self.server = iotests.VM('.server')
self.server.add_drive_raw('if=none,id=nbd-export,' +
'file=%s,' % test_img +
'format=%s,' % imgfmt +
'cache=%s' % cachemode)
self.server.launch()
def tearDown(self):
self.vm.shutdown()
self.server.shutdown()
os.remove(test_img)
try:
os.remove(unix_socket)
except OSError:
pass
def _server_up(self, address):
result = self.server.qmp('nbd-server-start', addr=address)
self.assert_qmp(result, 'return', {})
result = self.server.qmp('nbd-server-add', device='nbd-export')
self.assert_qmp(result, 'return', {})
def _server_down(self):
result = self.server.qmp('nbd-server-stop')
self.assert_qmp(result, 'return', {})
def test_inet(self):
address = { 'type': 'inet',
'data': {
'host': 'localhost',
'port': str(NBD_PORT)
} }
self._server_up(address)
self.client_test('nbd://localhost:%i/nbd-export' % NBD_PORT,
address, 'nbd-export')
self._server_down()
def test_inet6(self):
address = { 'type': 'inet',
'data': {
'host': '::1',
'port': str(NBD_PORT),
'ipv4': False,
'ipv6': True
} }
filename = { 'driver': 'raw',
'file': {
'driver': 'nbd',
'export': 'nbd-export',
'server': address
} }
self._server_up(address)
self.client_test(filename, address, 'nbd-export')
self._server_down()
def test_unix(self):
address = { 'type': 'unix',
'data': { 'path': unix_socket } }
self._server_up(address)
self.client_test('nbd+unix:///nbd-export?socket=' + unix_socket,
address, 'nbd-export')
self._server_down()
def test_fd(self):
self._server_up({ 'type': 'unix',
'data': { 'path': unix_socket } })
sockfd = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
sockfd.connect(unix_socket)
result = self.vm.send_fd_scm(str(sockfd.fileno()))
self.assertEqual(result, 0, 'Failed to send socket FD')
result = self.vm.qmp('getfd', fdname='nbd-fifo')
self.assert_qmp(result, 'return', {})
address = { 'type': 'fd',
'data': { 'str': 'nbd-fifo' } }
filename = { 'driver': 'raw',
'file': {
'driver': 'nbd',
'export': 'nbd-export',
'server': address
} }
self.client_test(filename, address, 'nbd-export')
self._server_down()
if __name__ == '__main__':
# Need to support image creation
iotests.main(supported_fmts=['vpc', 'parallels', 'qcow', 'vdi', 'qcow2',
'vmdk', 'raw', 'vhdx', 'qed'])
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