tests/qemu-iotests/205

   1 #!/usr/bin/env python
   2 #
   3 # Tests for qmp command nbd-server-remove.
   4 #
   5 # Copyright (c) 2017 Virtuozzo International GmbH
   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 sys
  23 import iotests
  24 import time
  25 from iotests import qemu_img, qemu_io, filter_qemu_io, QemuIoInteractive
  26
  27 nbd_sock = 'nbd_sock'
  28 nbd_uri = 'nbd+unix:///exp?socket=' + nbd_sock
  29 disk = os.path.join(iotests.test_dir, 'disk')
  30
  31
  32 class TestNbdServerRemove(iotests.QMPTestCase):
  33     def setUp(self):
  34         qemu_img('create', '-f', iotests.imgfmt, disk, '1M')
  35
  36         self.vm = iotests.VM().add_drive(disk)
  37         self.vm.launch()
  38
  39         address = {
  40             'type': 'unix',
  41             'data': {
  42                 'path': nbd_sock
  43             }
  44         }
  45
  46         result = self.vm.qmp('nbd-server-start', addr=address)
  47         self.assert_qmp(result, 'return', {})
  48         result = self.vm.qmp('nbd-server-add', device='drive0', name='exp')
  49         self.assert_qmp(result, 'return', {})
  50
  51     def tearDown(self):
  52         self.vm.shutdown()
  53         os.remove(nbd_sock)
  54         os.remove(disk)
  55
  56     def remove_export(self, name, mode=None):
  57         if mode is None:
  58             return self.vm.qmp('nbd-server-remove', name=name)
  59         else:
  60             return self.vm.qmp('nbd-server-remove', name=name, mode=mode)
  61
  62     def assertExportNotFound(self, name):
  63         result = self.vm.qmp('nbd-server-remove', name=name)
  64         self.assert_qmp(result, 'error/desc', "Export 'exp' is not found")
  65
  66     def assertExistingClients(self, result):
  67         self.assert_qmp(result, 'error/desc', "export 'exp' still in use")
  68
  69     def assertReadOk(self, qemu_io_output):
  70         self.assertEqual(
  71                 filter_qemu_io(qemu_io_output).strip(),
  72                 'read 512/512 bytes at offset 0\n' +
  73                 '512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)')
  74
  75     def assertReadFailed(self, qemu_io_output):
  76         self.assertEqual(filter_qemu_io(qemu_io_output).strip(),
  77                          'read failed: Input/output error')
  78
  79     def assertConnectFailed(self, qemu_io_output):
  80         self.assertEqual(filter_qemu_io(qemu_io_output).strip(),
  81                          "can't open device " + nbd_uri +
  82                          ": Requested export not available\n"
  83                          "server reported: export 'exp' not present")
  84
  85     def do_test_connect_after_remove(self, mode=None):
  86         args = ('-r', '-f', 'raw', '-c', 'read 0 512', nbd_uri)
  87         self.assertReadOk(qemu_io(*args))
  88
  89         result = self.remove_export('exp', mode)
  90         self.assert_qmp(result, 'return', {})
  91
  92         self.assertExportNotFound('exp')
  93         self.assertConnectFailed(qemu_io(*args))
  94
  95     def test_connect_after_remove_default(self):
  96         self.do_test_connect_after_remove()
  97
  98     def test_connect_after_remove_safe(self):
  99         self.do_test_connect_after_remove('safe')
 100
 101     def test_connect_after_remove_force(self):
 102         self.do_test_connect_after_remove('hard')
 103
 104     def do_test_remove_during_connect_safe(self, mode=None):
 105         qio = QemuIoInteractive('-r', '-f', 'raw', nbd_uri)
 106         self.assertReadOk(qio.cmd('read 0 512'))
 107
 108         result = self.remove_export('exp', mode)
 109         self.assertExistingClients(result)
 110
 111         self.assertReadOk(qio.cmd('read 0 512'))
 112
 113         qio.close()
 114
 115         result = self.remove_export('exp', mode)
 116         self.assert_qmp(result, 'return', {})
 117
 118         self.assertExportNotFound('exp')
 119
 120     def test_remove_during_connect_default(self):
 121         self.do_test_remove_during_connect_safe()
 122
 123     def test_remove_during_connect_safe(self):
 124         self.do_test_remove_during_connect_safe('safe')
 125
 126     def test_remove_during_connect_hard(self):
 127         qio = QemuIoInteractive('-r', '-f', 'raw', nbd_uri)
 128         self.assertReadOk(qio.cmd('read 0 512'))
 129
 130         result = self.remove_export('exp', 'hard')
 131         self.assert_qmp(result, 'return', {})
 132
 133         self.assertReadFailed(qio.cmd('read 0 512'))
 134         self.assertExportNotFound('exp')
 135
 136         qio.close()
 137
 138     def test_remove_during_connect_safe_hard(self):
 139         qio = QemuIoInteractive('-r', '-f', 'raw', nbd_uri)
 140         self.assertReadOk(qio.cmd('read 0 512'))
 141
 142         result = self.remove_export('exp', 'safe')
 143         self.assertExistingClients(result)
 144
 145         self.assertReadOk(qio.cmd('read 0 512'))
 146
 147         result = self.remove_export('exp', 'hard')
 148         self.assert_qmp(result, 'return', {})
 149
 150         self.assertExportNotFound('exp')
 151         self.assertReadFailed(qio.cmd('read 0 512'))
 152         qio.close()
 153
 154
 155 if __name__ == '__main__':
 156     iotests.main()