xref: /qemu/tests/qemu-iotests/039 (revision 138ca49a) 
1#!/usr/bin/env 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
30status=1	# failure is the default!
31
32_cleanup()
33{
34	_cleanup_test_img
35}
36trap "_cleanup; exit \$status" 0 1 2 3 15
37
38# get standard environment, filters and checks
39. ./common.rc
40. ./common.filter
41
42_supported_fmt qcow2
43_supported_proto file fuse
44_supported_os Linux
45_default_cache_mode writethrough
46_supported_cache_modes writethrough
47# Some of these test cases expect no external data file so that all
48# clusters are part of the qcow2 image and refcounted
49_unsupported_imgopts data_file
50
51size=128M
52
53echo
54echo "== Checking that image is clean on shutdown =="
55
56_make_test_img -o "compat=1.1,lazy_refcounts=on" $size
57
58$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
67_make_test_img -o "compat=1.1,lazy_refcounts=on" $size
68
69_NO_VALGRIND \
70$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
102_make_test_img -o "compat=1.1,lazy_refcounts=on" $size
103
104_NO_VALGRIND \
105$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
120_make_test_img -o "compat=1.1,lazy_refcounts=off" $size
121
122_NO_VALGRIND \
123$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
134TEST_IMG="$TEST_IMG".base _make_test_img -o "compat=1.1,lazy_refcounts=on" $size
135
136_make_test_img -o "compat=1.1,lazy_refcounts=on,backing_file=$TEST_IMG.base" \
137    -F $IMGFMT $size
138
139$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
149echo
150echo "== Changing lazy_refcounts setting at runtime =="
151
152_make_test_img -o "compat=1.1,lazy_refcounts=off" $size
153
154_NO_VALGRIND \
155$QEMU_IO -c "reopen -o lazy-refcounts=on" \
156         -c "write -P 0x5a 0 512" \
157         -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
158    | _filter_qemu_io
159
160# The dirty bit must be set
161$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
162_check_test_img
163
164_make_test_img -o "compat=1.1,lazy_refcounts=on" $size
165
166_NO_VALGRIND \
167$QEMU_IO -c "reopen -o lazy-refcounts=off" \
168         -c "write -P 0x5a 0 512" \
169         -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
170    | _filter_qemu_io
171
172# The dirty bit must not be set
173$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
174_check_test_img
175
176
177# success, all done
178echo "*** done"
179rm -f $seq.full
180status=0
181
182