xref: /qemu/tests/qemu-iotests/056 (revision 7a4e543d) 
1#!/usr/bin/env python
2#
3# Tests for drive-backup
4#
5# Copyright (C) 2013 Red Hat, Inc.
6#
7# Based on 041.
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 time
24import os
25import iotests
26from iotests import qemu_img, qemu_io, create_image
27
28backing_img = os.path.join(iotests.test_dir, 'backing.img')
29test_img = os.path.join(iotests.test_dir, 'test.img')
30target_img = os.path.join(iotests.test_dir, 'target.img')
31
32class TestSyncModesNoneAndTop(iotests.QMPTestCase):
33    image_len = 64 * 1024 * 1024 # MB
34
35    def setUp(self):
36        create_image(backing_img, TestSyncModesNoneAndTop.image_len)
37        qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img)
38        qemu_io('-c', 'write -P0x41 0 512', test_img)
39        qemu_io('-c', 'write -P0xd5 1M 32k', test_img)
40        qemu_io('-c', 'write -P0xdc 32M 124k', test_img)
41        qemu_io('-c', 'write -P0xdc 67043328 64k', test_img)
42        self.vm = iotests.VM().add_drive(test_img)
43        self.vm.launch()
44
45    def tearDown(self):
46        self.vm.shutdown()
47        os.remove(test_img)
48        os.remove(backing_img)
49        try:
50            os.remove(target_img)
51        except OSError:
52            pass
53
54    def test_complete_top(self):
55        self.assert_no_active_block_jobs()
56        result = self.vm.qmp('drive-backup', device='drive0', sync='top',
57                             format=iotests.imgfmt, target=target_img)
58        self.assert_qmp(result, 'return', {})
59
60        self.wait_until_completed(check_offset=False)
61
62        self.assert_no_active_block_jobs()
63        self.vm.shutdown()
64        self.assertTrue(iotests.compare_images(test_img, target_img),
65                        'target image does not match source after backup')
66
67    def test_cancel_sync_none(self):
68        self.assert_no_active_block_jobs()
69
70        result = self.vm.qmp('drive-backup', device='drive0',
71                             sync='none', target=target_img)
72        self.assert_qmp(result, 'return', {})
73        time.sleep(1)
74        self.vm.hmp_qemu_io('drive0', 'write -P0x5e 0 512')
75        self.vm.hmp_qemu_io('drive0', 'aio_flush')
76        # Verify that the original contents exist in the target image.
77
78        event = self.cancel_and_wait()
79        self.assert_qmp(event, 'data/type', 'backup')
80
81        self.vm.shutdown()
82        time.sleep(1)
83        self.assertEqual(-1, qemu_io('-c', 'read -P0x41 0 512', target_img).find("verification failed"))
84
85class TestBeforeWriteNotifier(iotests.QMPTestCase):
86    def setUp(self):
87        self.vm = iotests.VM().add_drive_raw("file=blkdebug::null-co://,id=drive0,align=65536,driver=blkdebug")
88        self.vm.launch()
89
90    def tearDown(self):
91        self.vm.shutdown()
92        os.remove(target_img)
93
94    def test_before_write_notifier(self):
95        self.vm.pause_drive("drive0")
96        result = self.vm.qmp('drive-backup', device='drive0',
97                             sync='full', target=target_img,
98                             format="file", speed=1)
99        self.assert_qmp(result, 'return', {})
100        result = self.vm.qmp('block-job-pause', device="drive0")
101        self.assert_qmp(result, 'return', {})
102        # Speed is low enough that this must be an uncopied range, which will
103        # trigger the before write notifier
104        self.vm.hmp_qemu_io('drive0', 'aio_write -P 1 512512 512')
105        self.vm.resume_drive("drive0")
106        result = self.vm.qmp('block-job-resume', device="drive0")
107        self.assert_qmp(result, 'return', {})
108        event = self.cancel_and_wait()
109        self.assert_qmp(event, 'data/type', 'backup')
110
111if __name__ == '__main__':
112    iotests.main(supported_fmts=['qcow2', 'qed'])
113