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 file 43_supported_os Linux 44_unsupported_imgopts "subformat=monolithicFlat" \ 45 "subformat=twoGbMaxExtentFlat" \ 46 "subformat=twoGbMaxExtentSparse" 47 48CLUSTER_SIZE=4k 49size=128M 50 51echo 52echo "== creating backing file for COW tests ==" 53 54TEST_IMG_SAVE="$TEST_IMG" 55TEST_IMG="$TEST_IMG.base" 56 57_make_test_img $size 58$QEMU_IO -c "write -P 0x55 0 1M" "$TEST_IMG" | _filter_qemu_io 59 60TEST_IMG="$TEST_IMG_SAVE" 61 62_make_test_img -b "$TEST_IMG.base" 6G 63 64echo 65echo "== zero write with backing file ==" 66$QEMU_IO -c "write -z 64k 192k" "$TEST_IMG" | _filter_qemu_io 67$QEMU_IO -c "write -z 513k 13k" "$TEST_IMG" | _filter_qemu_io 68 69_check_test_img 70 71echo 72echo "== verifying patterns (3) ==" 73$QEMU_IO -c "read -P 0x55 0 64k" "$TEST_IMG" | _filter_qemu_io 74$QEMU_IO -c "read -P 0x0 64k 192k" "$TEST_IMG" | _filter_qemu_io 75$QEMU_IO -c "read -P 0x55 256k 257k" "$TEST_IMG" | _filter_qemu_io 76$QEMU_IO -c "read -P 0x0 513k 13k" "$TEST_IMG" | _filter_qemu_io 77$QEMU_IO -c "read -P 0x55 526k 498k" "$TEST_IMG" | _filter_qemu_io 78 79echo 80echo "== overwriting zero cluster ==" 81$QEMU_IO -c "write -P 0xa 60k 8k" "$TEST_IMG" | _filter_qemu_io 82$QEMU_IO -c "write -P 0xb 64k 8k" "$TEST_IMG" | _filter_qemu_io 83$QEMU_IO -c "write -P 0xc 76k 4k" "$TEST_IMG" | _filter_qemu_io 84$QEMU_IO -c "write -P 0xd 252k 8k" "$TEST_IMG" | _filter_qemu_io 85$QEMU_IO -c "write -P 0xe 248k 8k" "$TEST_IMG" | _filter_qemu_io 86 87_check_test_img 88 89echo 90echo "== verifying patterns (4) ==" 91$QEMU_IO -c "read -P 0x55 0 60k" "$TEST_IMG" | _filter_qemu_io 92$QEMU_IO -c "read -P 0xa 60k 4k" "$TEST_IMG" | _filter_qemu_io 93$QEMU_IO -c "read -P 0xb 64k 8k" "$TEST_IMG" | _filter_qemu_io 94$QEMU_IO -c "read -P 0x0 72k 4k" "$TEST_IMG" | _filter_qemu_io 95$QEMU_IO -c "read -P 0xc 76k 4k" "$TEST_IMG" | _filter_qemu_io 96$QEMU_IO -c "read -P 0x0 80k 168k" "$TEST_IMG" | _filter_qemu_io 97$QEMU_IO -c "read -P 0xe 248k 8k" "$TEST_IMG" | _filter_qemu_io 98$QEMU_IO -c "read -P 0xd 256k 4k" "$TEST_IMG" | _filter_qemu_io 99$QEMU_IO -c "read -P 0x55 260k 64k" "$TEST_IMG" | _filter_qemu_io 100 101echo 102echo "== re-zeroing overwritten area ==" 103$QEMU_IO -c "write -z 64k 192k" "$TEST_IMG" | _filter_qemu_io 104 105_check_test_img 106 107echo 108echo "== verifying patterns (5) ==" 109$QEMU_IO -c "read -P 0x55 0 60k" "$TEST_IMG" | _filter_qemu_io 110$QEMU_IO -c "read -P 0xa 60k 4k" "$TEST_IMG" | _filter_qemu_io 111$QEMU_IO -c "read -P 0x0 64k 192k" "$TEST_IMG" | _filter_qemu_io 112$QEMU_IO -c "read -P 0xd 256k 4k" "$TEST_IMG" | _filter_qemu_io 113$QEMU_IO -c "read -P 0x55 260k 253k" "$TEST_IMG" | _filter_qemu_io 114$QEMU_IO -c "read -P 0x0 513k 13k" "$TEST_IMG" | _filter_qemu_io 115$QEMU_IO -c "read -P 0x55 526k 498k" "$TEST_IMG" | _filter_qemu_io 116 117# success, all done 118echo "*** done" 119rm -f $seq.full 120status=0 121