1 #!/bin/bash 2 # 3 # Test aligned and misaligned write zeroes operations. 4 # 5 # Copyright (C) 2012 Red Hat, Inc. 6 # 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. 11 # 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. 16 # 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/>. 19 # 20 21 # creator 22 owner=pbonzini@redhat.com 23 24 seq=`basename $0` 25 echo "QA output created by $seq" 26 27 here=`pwd` 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 generic 42 _supported_os Linux 43 44 45 size=128M 46 _make_test_img $size 47 48 do_test() 49 { 50 local align=$1 51 local iocmd=$2 52 local img=$3 53 if [ "$IMGOPTSSYNTAX" = "true" ] 54 then 55 IO_OPEN_ARG="$img" 56 IO_EXTRA_ARGS="--image-opts" 57 else 58 IO_OPEN_ARG="-o driver=$IMGFMT,file.align=$align blkdebug::$img" 59 IO_EXTRA_ARGS="" 60 fi 61 { 62 echo "open $IO_OPEN_ARG" 63 echo $iocmd 64 } | $QEMU_IO $IO_EXTRA_ARGS 65 } 66 67 for write_zero_cmd in "write -z" "aio_write -z"; do 68 for align in 512 4k; do 69 echo 70 echo "== preparing image ==" 71 do_test $align "write -P 0xa 0x200 0x400" "$TEST_IMG" | _filter_qemu_io 72 do_test $align "write -P 0xa 0x20000 0x600" "$TEST_IMG" | _filter_qemu_io 73 do_test $align "$write_zero_cmd 0x400 0x20000" "$TEST_IMG" | _filter_qemu_io 74 75 echo 76 echo "== verifying patterns (1) ==" 77 do_test $align "read -P 0xa 0x200 0x200" "$TEST_IMG" | _filter_qemu_io 78 do_test $align "read -P 0x0 0x400 0x20000" "$TEST_IMG" | _filter_qemu_io 79 do_test $align "read -P 0xa 0x20400 0x200" "$TEST_IMG" | _filter_qemu_io 80 81 echo 82 echo "== rewriting zeroes ==" 83 do_test $align "write -P 0xb 0x10000 0x10000" "$TEST_IMG" | _filter_qemu_io 84 do_test $align "$write_zero_cmd 0x10000 0x10000" "$TEST_IMG" | _filter_qemu_io 85 86 echo 87 echo "== verifying patterns (2) ==" 88 do_test $align "read -P 0x0 0x400 0x20000" "$TEST_IMG" | _filter_qemu_io 89 90 echo 91 echo "== rewriting unaligned zeroes ==" 92 do_test $align "write -P 0xb 0x0 0x1000" "$TEST_IMG" | _filter_qemu_io 93 do_test $align "$write_zero_cmd 0x200 0x200" "$TEST_IMG" | _filter_qemu_io 94 95 echo 96 echo "== verifying patterns (3) ==" 97 do_test $align "read -P 0xb 0x0 0x200" "$TEST_IMG" | _filter_qemu_io 98 do_test $align "read -P 0x0 0x200 0x200" "$TEST_IMG" | _filter_qemu_io 99 do_test $align "read -P 0xb 0x400 0xc00" "$TEST_IMG" | _filter_qemu_io 100 101 echo 102 done 103 done 104 105 # success, all done 106 echo "*** done" 107 rm -f $seq.full 108 status=0 109