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=None):
  42         options = { 'node-name': 'nbd-blockdev',
  43                     'driver': 'raw',
  44                     'file': {
  45                         'driver': 'nbd',
  46                         'server': address
  47                     } }
  48         if export is not None:
  49             options['file']['export'] = export
  50         return options
  51
  52     def client_test(self, filename, address, export=None):
  53         bao = self.blockdev_add_options(address, export)
  54         result = self.vm.qmp('blockdev-add', **bao)
  55         self.assert_qmp(result, 'return', {})
  56
  57         result = self.vm.qmp('query-named-block-nodes')
  58         for node in result['return']:
  59             if node['node-name'] == 'nbd-blockdev':
  60                 if isinstance(filename, str):
  61                     self.assert_qmp(node, 'image/filename', filename)
  62                 else:
  63                     self.assert_json_filename_equal(node['image']['filename'],
  64                                                     filename)
  65                 break
  66
  67         result = self.vm.qmp('blockdev-del', node_name='nbd-blockdev')
  68         self.assert_qmp(result, 'return', {})
  69
  70
  71 class QemuNBD(NBDBlockdevAddBase):
  72     def setUp(self):
  73         qemu_img('create', '-f', iotests.imgfmt, test_img, '64k')
  74         self.vm = iotests.VM()
  75         self.vm.launch()
  76
  77     def tearDown(self):
  78         self.vm.shutdown()
  79         os.remove(test_img)
  80         try:
  81             os.remove(unix_socket)
  82         except OSError:
  83             pass
  84
  85     def _server_up(self, *args):
  86         self.assertEqual(qemu_nbd('-f', imgfmt, test_img, *args), 0)
  87
  88     def test_inet(self):
  89         self._server_up('-p', str(NBD_PORT))
  90         address = { 'type': 'inet',
  91                     'data': {
  92                         'host': 'localhost',
  93                         'port': str(NBD_PORT)
  94                     } }
  95         self.client_test('nbd://localhost:%i' % NBD_PORT,
  96                          flatten_sock_addr(address))
  97
  98     def test_unix(self):
  99         self._server_up('-k', unix_socket)
 100         address = { 'type': 'unix',
 101                     'data': { 'path': unix_socket } }
 102         self.client_test('nbd+unix://?socket=' + unix_socket,
 103                          flatten_sock_addr(address))
 104
 105
 106 class BuiltinNBD(NBDBlockdevAddBase):
 107     def setUp(self):
 108         qemu_img('create', '-f', iotests.imgfmt, test_img, '64k')
 109         self.vm = iotests.VM()
 110         self.vm.launch()
 111         self.server = iotests.VM('.server')
 112         self.server.add_drive_raw('if=none,id=nbd-export,' +
 113                                   'file=%s,' % test_img +
 114                                   'format=%s,' % imgfmt +
 115                                   'cache=%s' % cachemode)
 116         self.server.launch()
 117
 118     def tearDown(self):
 119         self.vm.shutdown()
 120         self.server.shutdown()
 121         os.remove(test_img)
 122         try:
 123             os.remove(unix_socket)
 124         except OSError:
 125             pass
 126
 127     def _server_up(self, address):
 128         result = self.server.qmp('nbd-server-start', addr=address)
 129         self.assert_qmp(result, 'return', {})
 130
 131         result = self.server.qmp('nbd-server-add', device='nbd-export')
 132         self.assert_qmp(result, 'return', {})
 133
 134     def _server_down(self):
 135         result = self.server.qmp('nbd-server-stop')
 136         self.assert_qmp(result, 'return', {})
 137
 138     def test_inet(self):
 139         address = { 'type': 'inet',
 140                     'data': {
 141                         'host': 'localhost',
 142                         'port': str(NBD_PORT)
 143                     } }
 144         self._server_up(address)
 145         self.client_test('nbd://localhost:%i/nbd-export' % NBD_PORT,
 146                          flatten_sock_addr(address), 'nbd-export')
 147         self._server_down()
 148
 149     def test_inet6(self):
 150         try:
 151             socket.getaddrinfo("::0", "0", socket.AF_INET6,
 152                                socket.SOCK_STREAM, socket.IPPROTO_TCP,
 153                                socket.AI_ADDRCONFIG | socket.AI_CANONNAME)
 154         except socket.gaierror:
 155             # IPv6 not available, skip
 156             return
 157         address = { 'type': 'inet',
 158                     'data': {
 159                         'host': '::1',
 160                         'port': str(NBD_PORT),
 161                         'ipv4': False,
 162                         'ipv6': True
 163                     } }
 164         filename = { 'driver': 'raw',
 165                      'file': {
 166                          'driver': 'nbd',
 167                          'export': 'nbd-export',
 168                          'server': flatten_sock_addr(address)
 169                      } }
 170         self._server_up(address)
 171         self.client_test(filename, flatten_sock_addr(address), 'nbd-export')
 172         self._server_down()
 173
 174     def test_unix(self):
 175         address = { 'type': 'unix',
 176                     'data': { 'path': unix_socket } }
 177         self._server_up(address)
 178         self.client_test('nbd+unix:///nbd-export?socket=' + unix_socket,
 179                          flatten_sock_addr(address), 'nbd-export')
 180         self._server_down()
 181
 182     def test_fd(self):
 183         self._server_up({ 'type': 'unix',
 184                           'data': { 'path': unix_socket } })
 185
 186         sockfd = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
 187         sockfd.connect(unix_socket)
 188
 189         result = self.vm.send_fd_scm(str(sockfd.fileno()))
 190         self.assertEqual(result, 0, 'Failed to send socket FD')
 191
 192         result = self.vm.qmp('getfd', fdname='nbd-fifo')
 193         self.assert_qmp(result, 'return', {})
 194
 195         address = { 'type': 'fd',
 196                     'data': { 'str': 'nbd-fifo' } }
 197         filename = { 'driver': 'raw',
 198                      'file': {
 199                          'driver': 'nbd',
 200                          'export': 'nbd-export',
 201                          'server': flatten_sock_addr(address)
 202                      } }
 203         self.client_test(filename, flatten_sock_addr(address), 'nbd-export')
 204
 205         self._server_down()
 206
 207
 208 if __name__ == '__main__':
 209     # Need to support image creation
 210     iotests.main(supported_fmts=['vpc', 'parallels', 'qcow', 'vdi', 'qcow2',
 211                                  'vmdk', 'raw', 'vhdx', 'qed'])