| #!/bin/bash |
| # |
| # Test bdrv_read/bdrv_write using BDRV_O_SNAPSHOT |
| # |
| # Copyright (C) 2013 Red Hat, Inc. |
| # |
| # This program is free software; you can redistribute it and/or modify |
| # it under the terms of the GNU General Public License as published by |
| # the Free Software Foundation; either version 2 of the License, or |
| # (at your option) any later version. |
| # |
| # This program is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| # |
| |
| # creator |
| owner=stefanha@redhat.com |
| |
| seq=`basename $0` |
| echo "QA output created by $seq" |
| |
| here=`pwd` |
| tmp=/tmp/$$ |
| status=1 # failure is the default! |
| |
| _cleanup() |
| { |
| _cleanup_test_img |
| } |
| trap "_cleanup; exit \$status" 0 1 2 3 15 |
| |
| # get standard environment, filters and checks |
| . ./common.rc |
| . ./common.filter |
| |
| _supported_fmt generic |
| _supported_proto file |
| _supported_os Linux |
| |
| # Don't do O_DIRECT on tmpfs |
| _supported_cache_modes "writeback" "writethrough" "unsafe" |
| |
| size=128M |
| _make_test_img $size |
| |
| echo |
| echo "== reading whole image ==" |
| $QEMU_IO -s -c "read 0 $size" "$TEST_IMG" | _filter_qemu_io |
| |
| echo |
| echo "== writing whole image does not modify image ==" |
| $QEMU_IO -s -c "write -P 0xa 0 $size" "$TEST_IMG" | _filter_qemu_io |
| $QEMU_IO -c "read -P 0 0 $size" "$TEST_IMG" | _filter_qemu_io |
| |
| # success, all done |
| echo "*** done" |
| rm -f $seq.full |
| status=0 |
