xref: /openbmc/qemu/tests/qemu-iotests/039 (revision ebe15582) 
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
44_supported_os Linux
45_default_cache_mode writethrough
46_supported_cache_modes writethrough
47
48size=128M
49
50echo
51echo "== Checking that image is clean on shutdown =="
52
53IMGOPTS="compat=1.1,lazy_refcounts=on"
54_make_test_img $size
55
56$QEMU_IO -c "write -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io
57
58# The dirty bit must not be set
59$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
60_check_test_img
61
62echo
63echo "== Creating a dirty image file =="
64
65IMGOPTS="compat=1.1,lazy_refcounts=on"
66_make_test_img $size
67
68_NO_VALGRIND \
69$QEMU_IO -c "write -P 0x5a 0 512" \
70         -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
71    | _filter_qemu_io
72
73# The dirty bit must be set
74$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
75_check_test_img
76
77echo
78echo "== Read-only access must still work =="
79
80$QEMU_IO -r -c "read -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io
81
82# The dirty bit must be set
83$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
84
85echo
86echo "== Repairing the image file must succeed =="
87
88_check_test_img -r all
89
90# The dirty bit must not be set
91$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
92
93echo
94echo "== Data should still be accessible after repair =="
95
96$QEMU_IO -c "read -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io
97
98echo
99echo "== Opening a dirty image read/write should repair it =="
100
101IMGOPTS="compat=1.1,lazy_refcounts=on"
102_make_test_img $size
103
104_NO_VALGRIND \
105$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
120IMGOPTS="compat=1.1,lazy_refcounts=off"
121_make_test_img $size
122
123_NO_VALGRIND \
124$QEMU_IO -c "write -P 0x5a 0 512" \
125         -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
126    | _filter_qemu_io
127
128# The dirty bit must not be set since lazy_refcounts=off
129$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
130_check_test_img
131
132echo
133echo "== Committing to a backing file with lazy_refcounts=on =="
134
135IMGOPTS="compat=1.1,lazy_refcounts=on"
136TEST_IMG="$TEST_IMG".base _make_test_img $size
137
138IMGOPTS="compat=1.1,lazy_refcounts=on,backing_file=$TEST_IMG.base"
139_make_test_img $size
140
141$QEMU_IO -c "write 0 512" "$TEST_IMG" | _filter_qemu_io
142$QEMU_IMG commit "$TEST_IMG"
143
144# The dirty bit must not be set
145$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
146$PYTHON qcow2.py "$TEST_IMG".base dump-header | grep incompatible_features
147
148_check_test_img
149TEST_IMG="$TEST_IMG".base _check_test_img
150
151echo
152echo "== Changing lazy_refcounts setting at runtime =="
153
154IMGOPTS="compat=1.1,lazy_refcounts=off"
155_make_test_img $size
156
157_NO_VALGRIND \
158$QEMU_IO -c "reopen -o lazy-refcounts=on" \
159         -c "write -P 0x5a 0 512" \
160         -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
161    | _filter_qemu_io
162
163# The dirty bit must be set
164$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
165_check_test_img
166
167IMGOPTS="compat=1.1,lazy_refcounts=on"
168_make_test_img $size
169
170_NO_VALGRIND \
171$QEMU_IO -c "reopen -o lazy-refcounts=off" \
172         -c "write -P 0x5a 0 512" \
173         -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
174    | _filter_qemu_io
175
176# The dirty bit must not be set
177$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
178_check_test_img
179
180
181# success, all done
182echo "*** done"
183rm -f $seq.full
184status=0
185
186