tests/qemu-iotests/046

   1 #!/usr/bin/env bash
   2 # group: rw auto aio quick
   3 #
   4 # Test concurrent cluster allocations
   5 #
   6 # Copyright (C) 2012 Red Hat, Inc.
   7 #
   8 # This program is free software; you can redistribute it and/or modify
   9 # it under the terms of the GNU General Public License as published by
  10 # the Free Software Foundation; either version 2 of the License, or
  11 # (at your option) any later version.
  12 #
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 #
  21
  22 # creator
  23 owner=kwolf@redhat.com
  24
  25 seq=`basename $0`
  26 echo "QA output created by $seq"
  27
  28 status=1        # failure is the default!
  29
  30 _cleanup()
  31 {
  32         _cleanup_test_img
  33 }
  34 trap "_cleanup; exit \$status" 0 1 2 3 15
  35
  36 # get standard environment, filters and checks
  37 . ./common.rc
  38 . ./common.filter
  39
  40 _supported_fmt qcow2
  41 _supported_proto file fuse
  42 # data_file does not support compressed clusters
  43 _unsupported_imgopts data_file
  44
  45 CLUSTER_SIZE=64k
  46 size=128M
  47
  48 echo
  49 echo "== creating backing file for COW tests =="
  50
  51 TEST_IMG_SAVE=$TEST_IMG
  52 TEST_IMG="$TEST_IMG.base"
  53 _make_test_img $size
  54
  55 backing_io()
  56 {
  57     local offset=$1
  58     local sectors=$2
  59     local op=$3
  60     local pattern=0
  61     local cur_sec=0
  62
  63     for ((i=0;i<=$((sectors - 1));i++)); do
  64         cur_sec=$((offset / 65536 + i))
  65         pattern=$(( ( (cur_sec % 128) + (cur_sec / 128)) % 128 ))
  66
  67         echo "$op -P $pattern $((cur_sec * 64))k 64k"
  68     done
  69 }
  70
  71 backing_io 0 32 write | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
  72
  73 TEST_IMG=$TEST_IMG_SAVE
  74 _make_test_img -b "$TEST_IMG.base" -F $IMGFMT 6G
  75
  76 echo
  77 echo "== Some concurrent requests touching the same cluster =="
  78
  79 overlay_io()
  80 {
  81 # Allocate middle of cluster 1, then write to somewhere before and after it
  82 cat  <<EOF
  83 break write_aio A
  84 aio_write -P 10 0x18000 0x2000
  85 wait_break A
  86
  87 aio_write -P 11 0x12000 0x2000
  88 aio_write -P 12 0x1c000 0x2000
  89
  90 resume A
  91 aio_flush
  92 EOF
  93
  94 # Sequential write case: Alloc middle of cluster 2, then write overlapping
  95 # to next cluster
  96 cat  <<EOF
  97 break write_aio A
  98 aio_write -P 20 0x28000 0x2000
  99 wait_break A
 100 aio_write -P 21 0x2a000 0x10000
 101 resume A
 102 aio_flush
 103 EOF
 104
 105 # The same with a gap between both requests
 106 cat  <<EOF
 107 break write_aio A
 108 aio_write -P 40 0x48000 0x2000
 109 wait_break A
 110 aio_write -P 41 0x4c000 0x10000
 111 resume A
 112 aio_flush
 113 EOF
 114
 115 # Sequential write, but the next cluster is already allocated
 116 cat  <<EOF
 117 write -P 70 0x76000 0x8000
 118 aio_flush
 119 break write_aio A
 120 aio_write -P 60 0x66000 0x2000
 121 wait_break A
 122 aio_write -P 61 0x6a000 0xe000
 123 resume A
 124 aio_flush
 125 EOF
 126
 127 # Sequential write, but the next cluster is already allocated
 128 # and phyiscally in the right position
 129 cat  <<EOF
 130 write -P 89 0x80000 0x1000
 131 write -P 90 0x96000 0x8000
 132 aio_flush
 133 discard 0x80000 0x10000
 134 aio_flush
 135 break write_aio A
 136 aio_write -P 80 0x86000 0x2000
 137 wait_break A
 138 aio_write -P 81 0x8a000 0xe000
 139 resume A
 140 aio_flush
 141 EOF
 142
 143 # Sequential write, and the next cluster is compressed
 144 cat  <<EOF
 145 write    -P 109 0xa0000 0x1000
 146 write -c -P 110 0xb0000 0x10000
 147 aio_flush
 148 discard 0xa0000 0x10000
 149 aio_flush
 150 break write_aio A
 151 aio_write -P 100 0xa6000 0x2000
 152 wait_break A
 153 aio_write -P 101 0xaa000 0xe000
 154 resume A
 155 aio_flush
 156 EOF
 157
 158 # Reverse sequential write
 159 cat  <<EOF
 160 break write_aio A
 161 aio_write -P 121 0xdc000 0x2000
 162 wait_break A
 163 aio_write -P 120 0xc4000 0x18000
 164 resume A
 165 aio_flush
 166 EOF
 167
 168 # Reverse sequential write with a gap
 169 cat  <<EOF
 170 break write_aio A
 171 aio_write -P 141 0xfc000 0x2000
 172 wait_break A
 173 aio_write -P 140 0xe4000 0x14000
 174 resume A
 175 aio_flush
 176 EOF
 177
 178 # Allocate an area in the middle and then overwrite with a larger request
 179 cat  <<EOF
 180 break write_aio A
 181 aio_write -P 161 0x10c000 0x8000
 182 wait_break A
 183 aio_write -P 160 0x104000 0x18000
 184 resume A
 185 aio_flush
 186 EOF
 187 }
 188
 189 overlay_io | $QEMU_IO blkdebug::"$TEST_IMG" | _filter_qemu_io |\
 190         sed -e 's/bytes at offset [0-9]*/bytes at offset XXX/g'
 191
 192 echo
 193 echo "== Verify image content =="
 194
 195 verify_io()
 196 {
 197     if ($QEMU_IMG info -U -f "$IMGFMT" "$TEST_IMG" | grep "compat: 0.10" > /dev/null); then
 198         # In v2 images clusters are not discarded when there is a backing file.
 199         # Keep the variable empty so that the previous value can be used as
 200         # the default below
 201         discarded=
 202     else
 203         # Discarded clusters are zeroed for v3 or later
 204         discarded=0
 205     fi
 206
 207     echo read -P 0 0 0x10000
 208
 209     echo read -P 1  0x10000 0x2000
 210     echo read -P 11 0x12000 0x2000
 211     echo read -P 1  0x14000 0x4000
 212     echo read -P 10 0x18000 0x2000
 213     echo read -P 1  0x1a000 0x2000
 214     echo read -P 12 0x1c000 0x2000
 215     echo read -P 1  0x1e000 0x2000
 216
 217     echo read -P 2  0x20000 0x8000
 218     echo read -P 20 0x28000 0x2000
 219     echo read -P 21 0x2a000 0x10000
 220     echo read -P 3  0x3a000 0x6000
 221
 222     echo read -P 4  0x40000 0x8000
 223     echo read -P 40 0x48000 0x2000
 224     echo read -P 4  0x4a000 0x2000
 225     echo read -P 41 0x4c000 0x10000
 226     echo read -P 5  0x5c000 0x4000
 227
 228     echo read -P 6  0x60000 0x6000
 229     echo read -P 60 0x66000 0x2000
 230     echo read -P 6  0x68000 0x2000
 231     echo read -P 61 0x6a000 0xe000
 232     echo read -P 70 0x78000 0x6000
 233     echo read -P 7  0x7e000 0x2000
 234
 235     echo read -P ${discarded:-89} 0x80000 0x1000
 236     echo read -P ${discarded:-8} 0x81000 0x5000
 237     echo read -P 80 0x86000 0x2000
 238     echo read -P ${discarded:-8} 0x88000 0x2000
 239     echo read -P 81 0x8a000 0xe000
 240     echo read -P 90 0x98000 0x6000
 241     echo read -P 9  0x9e000 0x2000
 242
 243     echo read -P ${discarded:-109} 0xa0000 0x1000
 244     echo read -P ${discarded:-10} 0xa1000 0x5000
 245     echo read -P 100 0xa6000 0x2000
 246     echo read -P ${discarded:-10} 0xa8000 0x2000
 247     echo read -P 101 0xaa000 0xe000
 248     echo read -P 110 0xb8000 0x8000
 249
 250     echo read -P 12  0xc0000 0x4000
 251     echo read -P 120 0xc4000 0x18000
 252     echo read -P 121 0xdc000 0x2000
 253     echo read -P 13  0xde000 0x2000
 254
 255     echo read -P 14  0xe0000 0x4000
 256     echo read -P 140 0xe4000 0x14000
 257     echo read -P 15  0xf8000 0x4000
 258     echo read -P 141 0xfc000 0x2000
 259     echo read -P 15  0xfe000 0x2000
 260
 261     echo read -P 16  0x100000 0x4000
 262     echo read -P 160 0x104000 0x8000
 263     # Undefined content for 0x10c000 0x8000
 264     echo read -P 160 0x114000 0x8000
 265     echo read -P 17  0x11c000 0x4000
 266 }
 267
 268 verify_io | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
 269
 270 _check_test_img
 271
 272 # success, all done
 273 echo "*** done"
 274 rm -f $seq.full
 275 status=0