tests/qemu-iotests/196

   1 #!/usr/bin/env python
   2 #
   3 # Test clearing unknown autoclear_features flag by qcow2 after
   4 # migration. This test mimics migration to older qemu.
   5 #
   6 # Copyright (c) 2017 Parallels International GmbH
   7 #
   8 # This program is free software; you can redistribute it and/or modify
   9 # it under the terms of the GNU General Public License as published by
  10 # the Free Software Foundation; either version 2 of the License, or
  11 # (at your option) any later version.
  12 #
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 #
  21
  22 import os
  23 import iotests
  24 from iotests import qemu_img
  25
  26 disk = os.path.join(iotests.test_dir, 'disk')
  27 migfile = os.path.join(iotests.test_dir, 'migfile')
  28
  29 class TestInvalidateAutoclear(iotests.QMPTestCase):
  30
  31     def tearDown(self):
  32         self.vm_a.shutdown()
  33         self.vm_b.shutdown()
  34         os.remove(disk)
  35         os.remove(migfile)
  36
  37     def setUp(self):
  38         qemu_img('create', '-f', iotests.imgfmt, disk, '1M')
  39
  40         self.vm_a = iotests.VM(path_suffix='a').add_drive(disk)
  41         self.vm_a.launch()
  42
  43         self.vm_b = iotests.VM(path_suffix='b').add_drive(disk)
  44         self.vm_b.add_incoming("exec: cat '" + migfile + "'")
  45
  46     def test_migration(self):
  47         result = self.vm_a.qmp('migrate', uri='exec:cat>' + migfile)
  48         self.assert_qmp(result, 'return', {});
  49         self.assertNotEqual(self.vm_a.event_wait("STOP"), None)
  50
  51         with open(disk, 'r+b') as f:
  52             f.seek(88) # first byte of autoclear_features field
  53             f.write(b'\xff')
  54
  55         self.vm_b.launch()
  56         while True:
  57             result = self.vm_b.qmp('query-status')
  58             if result['return']['status'] == 'running':
  59                 break
  60
  61         with open(disk, 'rb') as f:
  62             f.seek(88)
  63             self.assertEqual(f.read(1), b'\x00')
  64
  65 if __name__ == '__main__':
  66     iotests.main(supported_fmts=['qcow2'])