3 # Test bdrv_read/bdrv_write using BDRV_O_SNAPSHOT
5 # Copyright (C) 2013 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, see <http://www.gnu.org/licenses/>.
22 owner
=stefanha@redhat.com
25 echo "QA output created by $seq"
29 status
=1 # failure is the default!
35 trap "_cleanup; exit \$status" 0 1 2 3 15
37 # get standard environment, filters and checks
41 _supported_fmt generic
42 _supported_proto generic
44 _default_cache_mode
"writethrough"
45 _supported_cache_modes
"writethrough"
51 echo "== reading whole image =="
52 $QEMU_IO -s -c "read 0 $size" "$TEST_IMG" | _filter_qemu_io
55 echo "== writing whole image does not modify image =="
56 $QEMU_IO -s -c "write -P 0xa 0 $size" "$TEST_IMG" | _filter_qemu_io
57 $QEMU_IO -c "read -P 0 0 $size" "$TEST_IMG" | _filter_qemu_io