xref: /openbmc/qemu/tests/qemu-iotests/196 (revision b6aed193)
1#!/usr/bin/env python3
2# group: rw quick migration
3#
4# Test clearing unknown autoclear_features flag by qcow2 after
5# migration. This test mimics migration to older qemu.
6#
7# Copyright (c) 2017 Parallels International GmbH
8#
9# This program is free software; you can redistribute it and/or modify
10# it under the terms of the GNU General Public License as published by
11# the Free Software Foundation; either version 2 of the License, or
12# (at your option) any later version.
13#
14# This program is distributed in the hope that it will be useful,
15# but WITHOUT ANY WARRANTY; without even the implied warranty of
16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17# GNU General Public License for more details.
18#
19# You should have received a copy of the GNU General Public License
20# along with this program.  If not, see <http://www.gnu.org/licenses/>.
21#
22
23import os
24import iotests
25from iotests import qemu_img
26
27disk = os.path.join(iotests.test_dir, 'disk')
28migfile = os.path.join(iotests.test_dir, 'migfile')
29
30class TestInvalidateAutoclear(iotests.QMPTestCase):
31
32    def tearDown(self):
33        self.vm_a.shutdown()
34        self.vm_b.shutdown()
35        os.remove(disk)
36        os.remove(migfile)
37
38    def setUp(self):
39        qemu_img('create', '-f', iotests.imgfmt, disk, '1M')
40
41        self.vm_a = iotests.VM(path_suffix='a').add_drive(disk)
42        self.vm_a.launch()
43
44        self.vm_b = iotests.VM(path_suffix='b').add_drive(disk)
45        self.vm_b.add_incoming("exec: cat '" + migfile + "'")
46
47    def test_migration(self):
48        self.vm_a.cmd('migrate', uri='exec:cat>' + migfile)
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
65if __name__ == '__main__':
66    iotests.main(supported_fmts=['qcow2'],
67                 supported_protocols=['file'],
68                 unsupported_imgopts=['compat'])
69