#!/bin/bash # # Test aligned and misaligned write zeroes operations. # # Copyright (C) 2012 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=pbonzini@redhat.com seq=`basename $0` echo "QA output created by $seq" here=`pwd` 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 generic _supported_os Linux size=128M _make_test_img $size do_test() { local align=$1 local iocmd=$2 local img=$3 if [ "$IMGOPTSSYNTAX" = "true" ] then IO_OPEN_ARG="$img" IO_EXTRA_ARGS="--image-opts" else IO_OPEN_ARG="-o driver=$IMGFMT,file.align=$align blkdebug::$img" IO_EXTRA_ARGS="" fi { echo "open $IO_OPEN_ARG" echo $iocmd } | $QEMU_IO $IO_EXTRA_ARGS } for write_zero_cmd in "write -z" "aio_write -z"; do for align in 512 4k; do echo echo "== preparing image ==" do_test $align "write -P 0xa 0x200 0x400" "$TEST_IMG" | _filter_qemu_io do_test $align "write -P 0xa 0x20000 0x600" "$TEST_IMG" | _filter_qemu_io do_test $align "$write_zero_cmd 0x400 0x20000" "$TEST_IMG" | _filter_qemu_io echo echo "== verifying patterns (1) ==" do_test $align "read -P 0xa 0x200 0x200" "$TEST_IMG" | _filter_qemu_io do_test $align "read -P 0x0 0x400 0x20000" "$TEST_IMG" | _filter_qemu_io do_test $align "read -P 0xa 0x20400 0x200" "$TEST_IMG" | _filter_qemu_io echo echo "== rewriting zeroes ==" do_test $align "write -P 0xb 0x10000 0x10000" "$TEST_IMG" | _filter_qemu_io do_test $align "$write_zero_cmd 0x10000 0x10000" "$TEST_IMG" | _filter_qemu_io echo echo "== verifying patterns (2) ==" do_test $align "read -P 0x0 0x400 0x20000" "$TEST_IMG" | _filter_qemu_io echo echo "== rewriting unaligned zeroes ==" do_test $align "write -P 0xb 0x0 0x1000" "$TEST_IMG" | _filter_qemu_io do_test $align "$write_zero_cmd 0x200 0x200" "$TEST_IMG" | _filter_qemu_io echo echo "== verifying patterns (3) ==" do_test $align "read -P 0xb 0x0 0x200" "$TEST_IMG" | _filter_qemu_io do_test $align "read -P 0x0 0x200 0x200" "$TEST_IMG" | _filter_qemu_io do_test $align "read -P 0xb 0x400 0xc00" "$TEST_IMG" | _filter_qemu_io echo done done # success, all done echo "*** done" rm -f $seq.full status=0