3 # Test clearing unknown autoclear_features flag by qcow2 after
4 # migration. This test mimics migration to older qemu.
6 # Copyright (c) 2017 Parallels International GmbH
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.
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.
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/>.
24 from iotests import qemu_img
26 disk = os.path.join(iotests.test_dir, 'disk')
27 migfile = os.path.join(iotests.test_dir, 'migfile')
29 class TestInvalidateAutoclear(iotests.QMPTestCase):
38 qemu_img('create', '-f', iotests.imgfmt, disk, '1M')
40 self.vm_a = iotests.VM(path_suffix='a').add_drive(disk)
43 self.vm_b = iotests.VM(path_suffix='b').add_drive(disk)
44 self.vm_b.add_incoming("exec: cat '" + migfile + "'")
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)
51 with open(disk, 'r+b') as f:
52 f.seek(88) # first byte of autoclear_features field
57 result = self.vm_b.qmp('query-status')
58 if result['return']['status'] == 'running':
61 with open(disk, 'rb') as f:
63 self.assertEqual(f.read(1), b'\x00')
65 if __name__ == '__main__':
66 iotests.main(supported_fmts=['qcow2'],
67 supported_protocols=['file'])