xref: /qemu/tests/qemu-iotests/039 (revision d072cdf3) 
1#!/bin/bash
2#
3# Test qcow2 lazy refcounts
4#
5# Copyright (C) 2012 Red Hat, Inc.
6# Copyright IBM, Corp. 2010
7#
8# Based on test 038.
9#
10# This program is free software; you can redistribute it and/or modify
11# it under the terms of the GNU General Public License as published by
12# the Free Software Foundation; either version 2 of the License, or
13# (at your option) any later version.
14#
15# This program is distributed in the hope that it will be useful,
16# but WITHOUT ANY WARRANTY; without even the implied warranty of
17# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18# GNU General Public License for more details.
19#
20# You should have received a copy of the GNU General Public License
21# along with this program.  If not, see <http://www.gnu.org/licenses/>.
22#
23
24# creator
25owner=stefanha@linux.vnet.ibm.com
26
27seq=`basename $0`
28echo "QA output created by $seq"
29
30here=`pwd`
31tmp=/tmp/$$
32status=1	# failure is the default!
33
34_cleanup()
35{
36	_cleanup_test_img
37}
38trap "_cleanup; exit \$status" 0 1 2 3 15
39
40# get standard environment, filters and checks
41. ./common.rc
42. ./common.filter
43
44_supported_fmt qcow2
45_supported_proto file
46_supported_os Linux
47_default_cache_mode "writethrough"
48_supported_cache_modes "writethrough"
49
50_no_dump_exec()
51{
52    (ulimit -c 0; exec "$@")
53}
54
55size=128M
56
57echo
58echo "== Checking that image is clean on shutdown =="
59
60IMGOPTS="compat=1.1,lazy_refcounts=on"
61_make_test_img $size
62
63$QEMU_IO -c "write -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io
64
65# The dirty bit must not be set
66$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
67_check_test_img
68
69echo
70echo "== Creating a dirty image file =="
71
72IMGOPTS="compat=1.1,lazy_refcounts=on"
73_make_test_img $size
74
75_no_dump_exec $QEMU_IO -c "write -P 0x5a 0 512" -c "abort" "$TEST_IMG" 2>&1 | _filter_qemu_io
76
77# The dirty bit must be set
78$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
79_check_test_img
80
81echo
82echo "== Read-only access must still work =="
83
84$QEMU_IO -r -c "read -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io
85
86# The dirty bit must be set
87$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
88
89echo
90echo "== Repairing the image file must succeed =="
91
92_check_test_img -r all
93
94# The dirty bit must not be set
95$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
96
97echo
98echo "== Data should still be accessible after repair =="
99
100$QEMU_IO -c "read -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io
101
102echo
103echo "== Opening a dirty image read/write should repair it =="
104
105IMGOPTS="compat=1.1,lazy_refcounts=on"
106_make_test_img $size
107
108_no_dump_exec $QEMU_IO -c "write -P 0x5a 0 512" -c "abort" "$TEST_IMG" 2>&1 | _filter_qemu_io
109
110# The dirty bit must be set
111$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
112
113$QEMU_IO -c "write 0 512" "$TEST_IMG" | _filter_qemu_io
114
115# The dirty bit must not be set
116$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
117
118echo
119echo "== Creating an image file with lazy_refcounts=off =="
120
121IMGOPTS="compat=1.1,lazy_refcounts=off"
122_make_test_img $size
123
124_no_dump_exec $QEMU_IO -c "write -P 0x5a 0 512" -c "abort" "$TEST_IMG" 2>&1 | _filter_qemu_io
125
126# The dirty bit must not be set since lazy_refcounts=off
127$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
128_check_test_img
129
130echo
131echo "== Committing to a backing file with lazy_refcounts=on =="
132
133IMGOPTS="compat=1.1,lazy_refcounts=on"
134TEST_IMG="$TEST_IMG".base _make_test_img $size
135
136IMGOPTS="compat=1.1,lazy_refcounts=on,backing_file=$TEST_IMG.base"
137_make_test_img $size
138
139$QEMU_IO -c "write 0 512" "$TEST_IMG" | _filter_qemu_io
140$QEMU_IMG commit "$TEST_IMG"
141
142# The dirty bit must not be set
143$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
144$PYTHON qcow2.py "$TEST_IMG".base dump-header | grep incompatible_features
145
146_check_test_img
147TEST_IMG="$TEST_IMG".base _check_test_img
148
149
150# success, all done
151echo "*** done"
152rm -f $seq.full
153status=0
154
155