tests/qemu-iotests/147

   1 #!/usr/bin/env python
   2 #
   3 # Test case for NBD's blockdev-add interface
   4 #
   5 # Copyright (C) 2016 Red Hat, Inc.
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 2 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 #
  20
  21 import os
  22 import socket
  23 import stat
  24 import time
  25 import iotests
  26 from iotests import cachemode, imgfmt, qemu_img, qemu_nbd
  27
  28 NBD_PORT = 10811
  29
  30 test_img = os.path.join(iotests.test_dir, 'test.img')
  31 unix_socket = os.path.join(iotests.test_dir, 'nbd.socket')
  32
  33
  34 def flatten_sock_addr(crumpled_address):
  35     result = { 'type': crumpled_address['type'] }
  36     result.update(crumpled_address['data'])
  37     return result
  38
  39
  40 class NBDBlockdevAddBase(iotests.QMPTestCase):
  41     def blockdev_add_options(self, address, export, node_name):
  42         options = { 'node-name': node_name,
  43                     'driver': 'raw',
  44                     'file': {
  45                         'driver': 'nbd',
  46                         'read-only': True,
  47                         'server': address
  48                     } }
  49         if export is not None:
  50             options['file']['export'] = export
  51         return options
  52
  53     def client_test(self, filename, address, export=None,
  54                     node_name='nbd-blockdev', delete=True):
  55         bao = self.blockdev_add_options(address, export, node_name)
  56         result = self.vm.qmp('blockdev-add', **bao)
  57         self.assert_qmp(result, 'return', {})
  58
  59         found = False
  60         result = self.vm.qmp('query-named-block-nodes')
  61         for node in result['return']:
  62             if node['node-name'] == node_name:
  63                 found = True
  64                 if isinstance(filename, str):
  65                     self.assert_qmp(node, 'image/filename', filename)
  66                 else:
  67                     self.assert_json_filename_equal(node['image']['filename'],
  68                                                     filename)
  69                 break
  70         self.assertTrue(found)
  71
  72         if delete:
  73             result = self.vm.qmp('blockdev-del', node_name=node_name)
  74             self.assert_qmp(result, 'return', {})
  75
  76
  77 class QemuNBD(NBDBlockdevAddBase):
  78     def setUp(self):
  79         qemu_img('create', '-f', iotests.imgfmt, test_img, '64k')
  80         self.vm = iotests.VM()
  81         self.vm.launch()
  82
  83     def tearDown(self):
  84         self.vm.shutdown()
  85         os.remove(test_img)
  86         try:
  87             os.remove(unix_socket)
  88         except OSError:
  89             pass
  90
  91     def _server_up(self, *args):
  92         self.assertEqual(qemu_nbd('-f', imgfmt, test_img, *args), 0)
  93
  94     def test_inet(self):
  95         self._server_up('-p', str(NBD_PORT))
  96         address = { 'type': 'inet',
  97                     'data': {
  98                         'host': 'localhost',
  99                         'port': str(NBD_PORT)
 100                     } }
 101         self.client_test('nbd://localhost:%i' % NBD_PORT,
 102                          flatten_sock_addr(address))
 103
 104     def test_unix(self):
 105         self._server_up('-k', unix_socket)
 106         address = { 'type': 'unix',
 107                     'data': { 'path': unix_socket } }
 108         self.client_test('nbd+unix://?socket=' + unix_socket,
 109                          flatten_sock_addr(address))
 110
 111
 112 class BuiltinNBD(NBDBlockdevAddBase):
 113     def setUp(self):
 114         qemu_img('create', '-f', iotests.imgfmt, test_img, '64k')
 115         self.vm = iotests.VM()
 116         self.vm.launch()
 117         self.server = iotests.VM('.server')
 118         self.server.add_drive_raw('if=none,id=nbd-export,' +
 119                                   'file=%s,' % test_img +
 120                                   'format=%s,' % imgfmt +
 121                                   'cache=%s' % cachemode)
 122         self.server.launch()
 123
 124     def tearDown(self):
 125         self.vm.shutdown()
 126         self.server.shutdown()
 127         os.remove(test_img)
 128         try:
 129             os.remove(unix_socket)
 130         except OSError:
 131             pass
 132
 133     def _server_up(self, address, export_name=None, export_name2=None):
 134         result = self.server.qmp('nbd-server-start', addr=address)
 135         self.assert_qmp(result, 'return', {})
 136
 137         if export_name is None:
 138             result = self.server.qmp('nbd-server-add', device='nbd-export')
 139         else:
 140             result = self.server.qmp('nbd-server-add', device='nbd-export',
 141                                      name=export_name)
 142         self.assert_qmp(result, 'return', {})
 143
 144         if export_name2 is not None:
 145             result = self.server.qmp('nbd-server-add', device='nbd-export',
 146                                      name=export_name2)
 147             self.assert_qmp(result, 'return', {})
 148
 149
 150     def _server_down(self):
 151         result = self.server.qmp('nbd-server-stop')
 152         self.assert_qmp(result, 'return', {})
 153
 154     def do_test_inet(self, export_name=None):
 155         address = { 'type': 'inet',
 156                     'data': {
 157                         'host': 'localhost',
 158                         'port': str(NBD_PORT)
 159                     } }
 160         self._server_up(address, export_name)
 161         export_name = export_name or 'nbd-export'
 162         self.client_test('nbd://localhost:%i/%s' % (NBD_PORT, export_name),
 163                          flatten_sock_addr(address), export_name)
 164         self._server_down()
 165
 166     def test_inet_default_export_name(self):
 167         self.do_test_inet()
 168
 169     def test_inet_same_export_name(self):
 170         self.do_test_inet('nbd-export')
 171
 172     def test_inet_different_export_name(self):
 173         self.do_test_inet('shadow')
 174
 175     def test_inet_two_exports(self):
 176         address = { 'type': 'inet',
 177                     'data': {
 178                         'host': 'localhost',
 179                         'port': str(NBD_PORT)
 180                     } }
 181         self._server_up(address, 'exp1', 'exp2')
 182         self.client_test('nbd://localhost:%i/%s' % (NBD_PORT, 'exp1'),
 183                          flatten_sock_addr(address), 'exp1', 'node1', False)
 184         self.client_test('nbd://localhost:%i/%s' % (NBD_PORT, 'exp2'),
 185                          flatten_sock_addr(address), 'exp2', 'node2', False)
 186         result = self.vm.qmp('blockdev-del', node_name='node1')
 187         self.assert_qmp(result, 'return', {})
 188         result = self.vm.qmp('blockdev-del', node_name='node2')
 189         self.assert_qmp(result, 'return', {})
 190         self._server_down()
 191
 192     def test_inet6(self):
 193         try:
 194             socket.getaddrinfo("::0", "0", socket.AF_INET6,
 195                                socket.SOCK_STREAM, socket.IPPROTO_TCP,
 196                                socket.AI_ADDRCONFIG | socket.AI_CANONNAME)
 197         except socket.gaierror:
 198             # IPv6 not available, skip
 199             return
 200         address = { 'type': 'inet',
 201                     'data': {
 202                         'host': '::1',
 203                         'port': str(NBD_PORT),
 204                         'ipv4': False,
 205                         'ipv6': True
 206                     } }
 207         filename = { 'driver': 'raw',
 208                      'file': {
 209                          'driver': 'nbd',
 210                          'export': 'nbd-export',
 211                          'server': flatten_sock_addr(address)
 212                      } }
 213         self._server_up(address)
 214         self.client_test(filename, flatten_sock_addr(address), 'nbd-export')
 215         self._server_down()
 216
 217     def test_unix(self):
 218         address = { 'type': 'unix',
 219                     'data': { 'path': unix_socket } }
 220         self._server_up(address)
 221         self.client_test('nbd+unix:///nbd-export?socket=' + unix_socket,
 222                          flatten_sock_addr(address), 'nbd-export')
 223         self._server_down()
 224
 225     def test_fd(self):
 226         self._server_up({ 'type': 'unix',
 227                           'data': { 'path': unix_socket } })
 228
 229         sockfd = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
 230         sockfd.connect(unix_socket)
 231
 232         result = self.vm.send_fd_scm(str(sockfd.fileno()))
 233         self.assertEqual(result, 0, 'Failed to send socket FD')
 234
 235         result = self.vm.qmp('getfd', fdname='nbd-fifo')
 236         self.assert_qmp(result, 'return', {})
 237
 238         address = { 'type': 'fd',
 239                     'data': { 'str': 'nbd-fifo' } }
 240         filename = { 'driver': 'raw',
 241                      'file': {
 242                          'driver': 'nbd',
 243                          'export': 'nbd-export',
 244                          'server': flatten_sock_addr(address)
 245                      } }
 246         self.client_test(filename, flatten_sock_addr(address), 'nbd-export')
 247
 248         self._server_down()
 249
 250
 251 if __name__ == '__main__':
 252     # Need to support image creation
 253     iotests.main(supported_fmts=['vpc', 'parallels', 'qcow', 'vdi', 'qcow2',
 254                                  'vmdk', 'raw', 'vhdx', 'qed'])