| #!/usr/bin/env bash | |
| # group: rw auto backing quick | |
| # | |
| # Test bdrv_pread/bdrv_pwrite 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" | |
| 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 | |
| # Don't do O_DIRECT on tmpfs | |
| _supported_cache_modes writeback writethrough unsafe | |
| size=128M | |
| _make_test_img $size | |
| echo | |
| echo "== initializing whole image ==" | |
| $QEMU_IO -c "write -z 0 $size" "$TEST_IMG" | _filter_qemu_io | |
| 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 |