summaryrefslogtreecommitdiffstats
path: root/qemu/tests/qemu-iotests/039
blob: 859705f848ad548dfaa8439a6395874c6bce1dd4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
#!/bin/bash
#
# Test qcow2 lazy refcounts
#
# Copyright (C) 2012 Red Hat, Inc.
# Copyright IBM, Corp. 2010
#
# Based on test 038.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#

# creator
owner=stefanha@linux.vnet.ibm.com

seq=`basename $0`
echo "QA output created by $seq"

here=`pwd`
tmp=/tmp/$$
status=1	# failure is the default!

_cleanup()
{
	_cleanup_test_img
}
trap "_cleanup; exit \$status" 0 1 2 3 15

# get standard environment, filters and checks
. ./common.rc
. ./common.filter

_supported_fmt qcow2
_supported_proto file
_supported_os Linux
_default_cache_mode "writethrough"
_supported_cache_modes "writethrough"

_subshell_exec()
{
    # Executing crashing commands in a subshell prevents information like the
    # "Killed" line from being lost
    (exec "$@")
}

size=128M

echo
echo "== Checking that image is clean on shutdown =="

IMGOPTS="compat=1.1,lazy_refcounts=on"
_make_test_img $size

$QEMU_IO -c "write -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io

# The dirty bit must not be set
$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
_check_test_img

echo
echo "== Creating a dirty image file =="

IMGOPTS="compat=1.1,lazy_refcounts=on"
_make_test_img $size

_subshell_exec $QEMU_IO -c "write -P 0x5a 0 512" \
                        -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
    | _filter_qemu_io

# The dirty bit must be set
$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
_check_test_img

echo
echo "== Read-only access must still work =="

$QEMU_IO -r -c "read -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io

# The dirty bit must be set
$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features

echo
echo "== Repairing the image file must succeed =="

_check_test_img -r all

# The dirty bit must not be set
$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features

echo
echo "== Data should still be accessible after repair =="

$QEMU_IO -c "read -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io

echo
echo "== Opening a dirty image read/write should repair it =="

IMGOPTS="compat=1.1,lazy_refcounts=on"
_make_test_img $size

_subshell_exec $QEMU_IO -c "write -P 0x5a 0 512" \
                        -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
    | _filter_qemu_io

# The dirty bit must be set
$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features

$QEMU_IO -c "write 0 512" "$TEST_IMG" | _filter_qemu_io

# The dirty bit must not be set
$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features

echo
echo "== Creating an image file with lazy_refcounts=off =="

IMGOPTS="compat=1.1,lazy_refcounts=off"
_make_test_img $size

_subshell_exec $QEMU_IO -c "write -P 0x5a 0 512" \
                        -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
    | _filter_qemu_io

# The dirty bit must not be set since lazy_refcounts=off
$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
_check_test_img

echo
echo "== Committing to a backing file with lazy_refcounts=on =="

IMGOPTS="compat=1.1,lazy_refcounts=on"
TEST_IMG="$TEST_IMG".base _make_test_img $size

IMGOPTS="compat=1.1,lazy_refcounts=on,backing_file=$TEST_IMG.base"
_make_test_img $size

$QEMU_IO -c "write 0 512" "$TEST_IMG" | _filter_qemu_io
$QEMU_IMG commit "$TEST_IMG"

# The dirty bit must not be set
$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
$PYTHON qcow2.py "$TEST_IMG".base dump-header | grep incompatible_features

_check_test_img
TEST_IMG="$TEST_IMG".base _check_test_img


# success, all done
echo "*** done"
rm -f $seq.full
status=0