1#!/bin/bash 2# 3# Test concurrent cluster allocations 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 qcow2 42_supported_proto generic 43_supported_os Linux 44 45CLUSTER_SIZE=64k 46size=128M 47 48echo 49echo "== creating backing file for COW tests ==" 50 51_make_test_img $size 52 53function backing_io() 54{ 55 local offset=$1 56 local sectors=$2 57 local op=$3 58 local pattern=0 59 local cur_sec=0 60 61 for i in $(seq 0 $((sectors - 1))); do 62 cur_sec=$((offset / 65536 + i)) 63 pattern=$(( ( (cur_sec % 128) + (cur_sec / 128)) % 128 )) 64 65 echo "$op -P $pattern $((cur_sec * 64))k 64k" 66 done 67} 68 69backing_io 0 16 write | $QEMU_IO $TEST_IMG | _filter_qemu_io 70 71mv $TEST_IMG $TEST_IMG.base 72 73_make_test_img -b $TEST_IMG.base 6G 74 75echo 76echo "== Some concurrent requests touching the same cluster ==" 77 78function overlay_io() 79{ 80# Allocate middle of cluster 1, then write to somewhere before and after it 81cat <<EOF 82break write_aio A 83aio_write -P 10 0x18000 0x2000 84wait_break A 85 86aio_write -P 11 0x12000 0x2000 87aio_write -P 12 0x1c000 0x2000 88 89resume A 90aio_flush 91EOF 92 93# Sequential write case: Alloc middle of cluster 2, then write overlapping 94# to next cluster 95cat <<EOF 96break write_aio A 97aio_write -P 20 0x28000 0x2000 98wait_break A 99aio_write -P 21 0x2a000 0x10000 100resume A 101aio_flush 102EOF 103 104# The same with a gap between both requests 105cat <<EOF 106break write_aio A 107aio_write -P 40 0x48000 0x2000 108wait_break A 109aio_write -P 41 0x4c000 0x10000 110resume A 111aio_flush 112EOF 113 114# Sequential write, but the next cluster is already allocated 115cat <<EOF 116write -P 70 0x76000 0x8000 117aio_flush 118break write_aio A 119aio_write -P 60 0x66000 0x2000 120wait_break A 121aio_write -P 61 0x6a000 0xe000 122resume A 123aio_flush 124EOF 125 126# Sequential write, but the next cluster is already allocated 127# and phyiscally in the right position 128cat <<EOF 129write -P 89 0x80000 0x1000 130write -P 90 0x96000 0x8000 131aio_flush 132discard 0x80000 0x10000 133aio_flush 134break write_aio A 135aio_write -P 80 0x86000 0x2000 136wait_break A 137aio_write -P 81 0x8a000 0xe000 138resume A 139aio_flush 140EOF 141 142# Sequential write, and the next cluster is compressed 143cat <<EOF 144write -P 109 0xa0000 0x1000 145write -c -P 110 0xb0000 0x10000 146aio_flush 147discard 0xa0000 0x10000 148aio_flush 149break write_aio A 150aio_write -P 100 0xa6000 0x2000 151wait_break A 152aio_write -P 101 0xaa000 0xe000 153resume A 154aio_flush 155EOF 156} 157 158overlay_io | $QEMU_IO blkdebug::$TEST_IMG | _filter_qemu_io |\ 159 sed -e 's/bytes at offset [0-9]*/bytes at offset XXX/g' 160 161echo 162echo "== Verify image content ==" 163 164function verify_io() 165{ 166 echo read -P 0 0 0x10000 167 168 echo read -P 1 0x10000 0x2000 169 echo read -P 11 0x12000 0x2000 170 echo read -P 1 0x14000 0x4000 171 echo read -P 10 0x18000 0x2000 172 echo read -P 1 0x1a000 0x2000 173 echo read -P 12 0x1c000 0x2000 174 echo read -P 1 0x1e000 0x2000 175 176 echo read -P 2 0x20000 0x8000 177 echo read -P 20 0x28000 0x2000 178 echo read -P 21 0x2a000 0x10000 179 echo read -P 3 0x3a000 0x6000 180 181 echo read -P 4 0x40000 0x8000 182 echo read -P 40 0x48000 0x2000 183 echo read -P 4 0x4a000 0x2000 184 echo read -P 41 0x4c000 0x10000 185 echo read -P 5 0x5c000 0x4000 186 187 echo read -P 6 0x60000 0x6000 188 echo read -P 60 0x66000 0x2000 189 echo read -P 6 0x68000 0x2000 190 echo read -P 61 0x6a000 0xe000 191 echo read -P 70 0x78000 0x6000 192 echo read -P 7 0x7e000 0x2000 193 194 echo read -P 8 0x80000 0x6000 195 echo read -P 80 0x86000 0x2000 196 echo read -P 8 0x88000 0x2000 197 echo read -P 81 0x8a000 0xe000 198 echo read -P 90 0x98000 0x6000 199 echo read -P 9 0x9e000 0x2000 200 201 echo read -P 10 0xa0000 0x6000 202 echo read -P 100 0xa6000 0x2000 203 echo read -P 10 0xa8000 0x2000 204 echo read -P 101 0xaa000 0xe000 205 echo read -P 110 0xb8000 0x8000 206} 207 208verify_io | $QEMU_IO $TEST_IMG | _filter_qemu_io 209 210_check_test_img 211 212# success, all done 213echo "*** done" 214rm -f $seq.full 215status=0 216