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1 #!/usr/bin/env bash 2 # group: rw auto backing quick 3 # 4 # Test bdrv_pread/bdrv_pwrite using BDRV_O_SNAPSHOT 5 # 6 # Copyright (C) 2013 Red Hat, Inc. 7 # 8 # This program is free software; you can redistribute it and/or modify 9 # it under the terms of the GNU General Public License as published by 10 # the Free Software Foundation; either version 2 of the License, or 11 # (at your option) any later version. 12 # 13 # This program is distributed in the hope that it will be useful, 14 # but WITHOUT ANY WARRANTY; without even the implied warranty of 15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 # GNU General Public License for more details. 17 # 18 # You should have received a copy of the GNU General Public License 19 # along with this program. If not, see <http://www.gnu.org/licenses/>. 20 # 21 22 # creator 23 owner=stefanha@redhat.com 24 25 seq=`basename $0` 26 echo "QA output created by $seq" 27 28 status=1 # failure is the default! 29 30 _cleanup() 31 { 32 _cleanup_test_img 33 } 34 trap "_cleanup; exit \$status" 0 1 2 3 15 35 36 # get standard environment, filters and checks 37 . ./common.rc 38 . ./common.filter 39 40 _supported_fmt generic 41 _supported_proto file 42 43 # Don't do O_DIRECT on tmpfs 44 _supported_cache_modes writeback writethrough unsafe 45 46 size=128M 47 _make_test_img $size 48 49 echo 50 echo "== initializing whole image ==" 51 $QEMU_IO -c "write -z 0 $size" "$TEST_IMG" | _filter_qemu_io 52 53 echo 54 echo "== reading whole image ==" 55 $QEMU_IO -s -c "read 0 $size" "$TEST_IMG" | _filter_qemu_io 56 57 echo 58 echo "== writing whole image does not modify image ==" 59 $QEMU_IO -s -c "write -P 0xa 0 $size" "$TEST_IMG" | _filter_qemu_io 60 $QEMU_IO -c "read -P 0 0 $size" "$TEST_IMG" | _filter_qemu_io 61 62 # success, all done 63 echo "*** done" 64 rm -f $seq.full 65 status=0