xref: /qemu/tests/qemu-iotests/039 (revision 67cc32eb) 
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
50size=128M
51
52echo
53echo "== Checking that image is clean on shutdown =="
54
55IMGOPTS="compat=1.1,lazy_refcounts=on"
56_make_test_img $size
57
58$QEMU_IO -c "write -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io
59
60# The dirty bit must not be set
61$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
62_check_test_img
63
64echo
65echo "== Creating a dirty image file =="
66
67IMGOPTS="compat=1.1,lazy_refcounts=on"
68_make_test_img $size
69
70$QEMU_IO -c "write -P 0x5a 0 512" \
71         -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
72    | _filter_qemu_io
73
74# The dirty bit must be set
75$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
76_check_test_img
77
78echo
79echo "== Read-only access must still work =="
80
81$QEMU_IO -r -c "read -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io
82
83# The dirty bit must be set
84$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
85
86echo
87echo "== Repairing the image file must succeed =="
88
89_check_test_img -r all
90
91# The dirty bit must not be set
92$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
93
94echo
95echo "== Data should still be accessible after repair =="
96
97$QEMU_IO -c "read -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io
98
99echo
100echo "== Opening a dirty image read/write should repair it =="
101
102IMGOPTS="compat=1.1,lazy_refcounts=on"
103_make_test_img $size
104
105$QEMU_IO -c "write -P 0x5a 0 512" \
106         -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
107    | _filter_qemu_io
108
109# The dirty bit must be set
110$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
111
112$QEMU_IO -c "write 0 512" "$TEST_IMG" | _filter_qemu_io
113
114# The dirty bit must not be set
115$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
116
117echo
118echo "== Creating an image file with lazy_refcounts=off =="
119
120IMGOPTS="compat=1.1,lazy_refcounts=off"
121_make_test_img $size
122
123$QEMU_IO -c "write -P 0x5a 0 512" \
124         -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
125    | _filter_qemu_io
126
127# The dirty bit must not be set since lazy_refcounts=off
128$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
129_check_test_img
130
131echo
132echo "== Committing to a backing file with lazy_refcounts=on =="
133
134IMGOPTS="compat=1.1,lazy_refcounts=on"
135TEST_IMG="$TEST_IMG".base _make_test_img $size
136
137IMGOPTS="compat=1.1,lazy_refcounts=on,backing_file=$TEST_IMG.base"
138_make_test_img $size
139
140$QEMU_IO -c "write 0 512" "$TEST_IMG" | _filter_qemu_io
141$QEMU_IMG commit "$TEST_IMG"
142
143# The dirty bit must not be set
144$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
145$PYTHON qcow2.py "$TEST_IMG".base dump-header | grep incompatible_features
146
147_check_test_img
148TEST_IMG="$TEST_IMG".base _check_test_img
149
150
151# success, all done
152echo "*** done"
153rm -f $seq.full
154status=0
155
156