xref: /qemu/tests/qemu-iotests/tests/reopen-file (revision 372b69f5) 
1#!/usr/bin/env python3
2# group: rw quick
3#
4# Test reopening a format driver's file child
5#
6# Copyright (C) 2022 Red Hat, Inc.
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
22import os
23import iotests
24from iotests import imgfmt, qemu_img_create, QMPTestCase
25
26
27image_size = 1 * 1024 * 1024
28test_img = os.path.join(iotests.test_dir, 'test.img')
29
30
31class TestReopenFile(QMPTestCase):
32    def setUp(self) -> None:
33        res = qemu_img_create('-f', imgfmt, test_img, str(image_size))
34        assert res.returncode == 0
35
36        # Add format driver node ('format') on top of the file ('file'), then
37        # add another raw node ('raw') on top of 'file' so for the reopen we
38        # can just switch from 'file' to 'raw'
39        self.vm = iotests.VM()
40        self.vm.add_blockdev(self.vm.qmp_to_opts({
41            'driver': imgfmt,
42            'node-name': 'format',
43            'file': {
44                'driver': 'file',
45                'node-name': 'file',
46                'filename': test_img
47            }
48        }))
49        self.vm.add_blockdev(self.vm.qmp_to_opts({
50            'driver': 'raw',
51            'node-name': 'raw',
52            'file': 'file'
53        }))
54        self.vm.launch()
55
56    def tearDown(self) -> None:
57        self.vm.shutdown()
58        os.remove(test_img)
59
60        # Check if there was any qemu-io run that failed
61        if 'Pattern verification failed' in self.vm.get_log():
62            print('ERROR: Pattern verification failed:')
63            print(self.vm.get_log())
64            self.fail('qemu-io pattern verification failed')
65
66    def test_reopen_file(self) -> None:
67        self.vm.cmd('blockdev-reopen', options=[{
68            'driver': imgfmt,
69            'node-name': 'format',
70            'file': 'raw'
71        }])
72
73        # Do some I/O to the image to see whether it still works
74        # (Pattern verification will be checked by tearDown())
75        result = self.vm.qmp('human-monitor-command',
76                             command_line='qemu-io format "write -P 42 0 64k"')
77        self.assert_qmp(result, 'return', '')
78
79        result = self.vm.qmp('human-monitor-command',
80                             command_line='qemu-io format "read -P 42 0 64k"')
81        self.assert_qmp(result, 'return', '')
82
83
84if __name__ == '__main__':
85    # Must support creating images and reopen
86    iotests.main(supported_fmts=['qcow', 'qcow2', 'qed', 'raw', 'vdi', 'vhdx',
87                                 'vmdk', 'vpc'],
88                 supported_protocols=['file'])
89