1#!/usr/bin/env bash 2# 3# Test bdrv_read/bdrv_write using BDRV_O_SNAPSHOT 4# 5# Copyright (C) 2013 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 22owner=stefanha@redhat.com 23 24seq=`basename $0` 25echo "QA output created by $seq" 26 27status=1 # failure is the default! 28 29_cleanup() 30{ 31 _cleanup_test_img 32} 33trap "_cleanup; exit \$status" 0 1 2 3 15 34 35# get standard environment, filters and checks 36. ./common.rc 37. ./common.filter 38 39_supported_fmt generic 40_supported_proto file 41_supported_os Linux 42 43# Don't do O_DIRECT on tmpfs 44_supported_cache_modes "writeback" "writethrough" "unsafe" 45 46size=128M 47_make_test_img $size 48 49echo 50echo "== initializing whole image ==" 51$QEMU_IO -c "write -z 0 $size" "$TEST_IMG" | _filter_qemu_io 52 53echo 54echo "== reading whole image ==" 55$QEMU_IO -s -c "read 0 $size" "$TEST_IMG" | _filter_qemu_io 56 57echo 58echo "== 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 63echo "*** done" 64rm -f $seq.full 65status=0 66