test commiting changes to backing file
[qemu-iotests/stefanha.git] / 002
blob14025e2ee8f0f0d89963a79d5615fdd241afc675
1 #!/bin/sh
3 # Test simple read/write using plain bdrv_pread/bdrv_pwrite
5 # Copyright (C) 2009 Red Hat, Inc.
7 # This program is free software; you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 2 of the License, or
10 # (at your option) any later version.
12 # This program is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with this program; if not, write to the Free Software
19 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20 # USA
23 # creator
24 owner=hch@lst.de
26 seq=`basename $0`
27 echo "QA output created by $seq"
29 here=`pwd`
30 tmp=/tmp/$$
31 status=1 # failure is the default!
33 _cleanup()
35 _cleanup_test_img
37 trap "_cleanup; exit \$status" 0 1 2 3 15
39 # get standard environment, filters and checks
40 . ./common.rc
41 . ./common.filter
43 _supported_fmt generic
44 _supported_os Linux
47 size=128M
48 _make_test_img $size
50 echo
51 echo "== reading whole image =="
52 $QEMU_IO -c "read -p 0 $size" $TEST_IMG | _filter_qemu_io
54 echo
55 echo "== rewriting whole image =="
56 $QEMU_IO -c "write -pP 0xa 0 $size" $TEST_IMG | _filter_qemu_io
58 echo
59 echo "== verify pattern =="
60 $QEMU_IO -c "read -pP 0xa 0 $size" $TEST_IMG | _filter_qemu_io
62 echo
63 echo "unaligned pwrite"
64 $QEMU_IO -c 'write -pP 0xab 66 42' $TEST_IMG | _filter_qemu_io
66 echo
67 echo "verify pattern"
68 $QEMU_IO -c 'read -pP 0xab 66 42' $TEST_IMG | _filter_qemu_io
70 # success, all done
71 echo "*** done"
72 rm -f $seq.full
73 status=0