1#!/bin/bash 2# 3# Test bdrv_write_zeroes with backing files 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 22owner=kwolf@redhat.com 23 24seq=`basename $0` 25echo "QA output created by $seq" 26 27here=`pwd` 28tmp=/tmp/$$ 29status=1 # failure is the default! 30 31_cleanup() 32{ 33 _cleanup_test_img 34} 35trap "_cleanup; exit \$status" 0 1 2 3 15 36 37# get standard environment, filters and checks 38. ./common.rc 39. ./common.filter 40 41_supported_fmt qcow qcow2 vmdk qed 42_supported_proto generic 43_supported_os Linux 44 45CLUSTER_SIZE=4k 46size=128M 47 48echo 49echo "== creating backing file for COW tests ==" 50 51_make_test_img $size 52$QEMU_IO -c "write -P 0x55 0 1M" "$TEST_IMG" | _filter_qemu_io 53mv "$TEST_IMG" "$TEST_IMG.base" 54 55_make_test_img -b "$TEST_IMG.base" 6G 56 57echo 58echo "== zero write with backing file ==" 59$QEMU_IO -c "write -z 64k 192k" "$TEST_IMG" | _filter_qemu_io 60$QEMU_IO -c "write -z 513k 13k" "$TEST_IMG" | _filter_qemu_io 61 62_check_test_img 63 64echo 65echo "== verifying patterns (3) ==" 66$QEMU_IO -c "read -P 0x55 0 64k" "$TEST_IMG" | _filter_qemu_io 67$QEMU_IO -c "read -P 0x0 64k 192k" "$TEST_IMG" | _filter_qemu_io 68$QEMU_IO -c "read -P 0x55 256k 257k" "$TEST_IMG" | _filter_qemu_io 69$QEMU_IO -c "read -P 0x0 513k 13k" "$TEST_IMG" | _filter_qemu_io 70$QEMU_IO -c "read -P 0x55 526k 498k" "$TEST_IMG" | _filter_qemu_io 71 72echo 73echo "== overwriting zero cluster ==" 74$QEMU_IO -c "write -P 0xa 60k 8k" "$TEST_IMG" | _filter_qemu_io 75$QEMU_IO -c "write -P 0xb 64k 8k" "$TEST_IMG" | _filter_qemu_io 76$QEMU_IO -c "write -P 0xc 76k 4k" "$TEST_IMG" | _filter_qemu_io 77$QEMU_IO -c "write -P 0xd 252k 8k" "$TEST_IMG" | _filter_qemu_io 78$QEMU_IO -c "write -P 0xe 248k 8k" "$TEST_IMG" | _filter_qemu_io 79 80_check_test_img 81 82echo 83echo "== verifying patterns (4) ==" 84$QEMU_IO -c "read -P 0x55 0 60k" "$TEST_IMG" | _filter_qemu_io 85$QEMU_IO -c "read -P 0xa 60k 4k" "$TEST_IMG" | _filter_qemu_io 86$QEMU_IO -c "read -P 0xb 64k 8k" "$TEST_IMG" | _filter_qemu_io 87$QEMU_IO -c "read -P 0x0 72k 4k" "$TEST_IMG" | _filter_qemu_io 88$QEMU_IO -c "read -P 0xc 76k 4k" "$TEST_IMG" | _filter_qemu_io 89$QEMU_IO -c "read -P 0x0 80k 168k" "$TEST_IMG" | _filter_qemu_io 90$QEMU_IO -c "read -P 0xe 248k 8k" "$TEST_IMG" | _filter_qemu_io 91$QEMU_IO -c "read -P 0xd 256k 4k" "$TEST_IMG" | _filter_qemu_io 92$QEMU_IO -c "read -P 0x55 260k 64k" "$TEST_IMG" | _filter_qemu_io 93 94echo 95echo "== re-zeroing overwritten area ==" 96$QEMU_IO -c "write -z 64k 192k" "$TEST_IMG" | _filter_qemu_io 97 98_check_test_img 99 100echo 101echo "== verifying patterns (5) ==" 102$QEMU_IO -c "read -P 0x55 0 60k" "$TEST_IMG" | _filter_qemu_io 103$QEMU_IO -c "read -P 0xa 60k 4k" "$TEST_IMG" | _filter_qemu_io 104$QEMU_IO -c "read -P 0x0 64k 192k" "$TEST_IMG" | _filter_qemu_io 105$QEMU_IO -c "read -P 0xd 256k 4k" "$TEST_IMG" | _filter_qemu_io 106$QEMU_IO -c "read -P 0x55 260k 253k" "$TEST_IMG" | _filter_qemu_io 107$QEMU_IO -c "read -P 0x0 513k 13k" "$TEST_IMG" | _filter_qemu_io 108$QEMU_IO -c "read -P 0x55 526k 498k" "$TEST_IMG" | _filter_qemu_io 109 110# success, all done 111echo "*** done" 112rm -f $seq.full 113status=0 114