tests/qemu-iotests/037

   1 #!/bin/bash
   2 #
   3 # Test COW from 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
  22 owner=kwolf@redhat.com
  23
  24 seq=`basename $0`
  25 echo "QA output created by $seq"
  26
  27 here=`pwd`
  28 tmp=/tmp/$$
  29 status=1        # failure is the default!
  30
  31 _cleanup()
  32 {
  33         _cleanup_test_img
  34 }
  35 trap "_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
  48 CLUSTER_SIZE=4k
  49 size=128M
  50
  51 echo
  52 echo "== creating backing file for COW tests =="
  53
  54 TEST_IMG_SAVE="$TEST_IMG"
  55 TEST_IMG="$TEST_IMG.base"
  56
  57 _make_test_img $size
  58
  59 function backing_io()
  60 {
  61     local offset=$1
  62     local sectors=$2
  63     local op=$3
  64     local pattern=0
  65     local cur_sec=0
  66
  67     for i in $(seq 0 $((sectors - 1))); do
  68         cur_sec=$((offset / 512 + i))
  69         pattern=$(( ( (cur_sec % 256) + (cur_sec / 256)) % 256 ))
  70
  71         echo "$op -P $pattern $((cur_sec * 512)) 512"
  72     done
  73 }
  74
  75 backing_io 0 256 write | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
  76
  77 TEST_IMG="$TEST_IMG_SAVE"
  78
  79 _make_test_img -b "$TEST_IMG.base" 6G
  80
  81 echo
  82 echo "== COW in a single cluster =="
  83 $QEMU_IO -c "write -P 0x77 0 2k" "$TEST_IMG" | _filter_qemu_io
  84 $QEMU_IO -c "write -P 0x88 6k 2k" "$TEST_IMG" | _filter_qemu_io
  85 $QEMU_IO -c "write -P 0x99 9k 2k" "$TEST_IMG" | _filter_qemu_io
  86
  87 $QEMU_IO -c "read -P 0x77 0 2k" "$TEST_IMG" | _filter_qemu_io
  88 backing_io $((2 * 1024)) 8 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
  89 $QEMU_IO -c "read -P 0x88 6k 2k" "$TEST_IMG" | _filter_qemu_io
  90 backing_io $((8 * 1024)) 2 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
  91 $QEMU_IO -c "read -P 0x99 9k 2k" "$TEST_IMG" | _filter_qemu_io
  92 backing_io $((11 * 1024)) 2 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
  93
  94 echo
  95 echo "== COW in two-cluster allocations =="
  96 $QEMU_IO -c "write -P 0x77 16k 6k" "$TEST_IMG" | _filter_qemu_io
  97 $QEMU_IO -c "write -P 0x88 26k 6k" "$TEST_IMG" | _filter_qemu_io
  98 $QEMU_IO -c "write -P 0x99 33k 5k" "$TEST_IMG" | _filter_qemu_io
  99
 100 $QEMU_IO -c "read -P 0x77 16k 6k" "$TEST_IMG" | _filter_qemu_io
 101 backing_io $((22 * 1024)) 8 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
 102 $QEMU_IO -c "read -P 0x88 26k 6k" "$TEST_IMG" | _filter_qemu_io
 103 backing_io $((32 * 1024)) 2 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
 104 $QEMU_IO -c "read -P 0x99 33k 5k" "$TEST_IMG" | _filter_qemu_io
 105 backing_io $((38 * 1024)) 4 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
 106
 107 echo
 108 echo "== COW in multi-cluster allocations =="
 109 $QEMU_IO -c "write -P 0x77 48k 15k" "$TEST_IMG" | _filter_qemu_io
 110 $QEMU_IO -c "write -P 0x88 66k 14k" "$TEST_IMG" | _filter_qemu_io
 111 $QEMU_IO -c "write -P 0x99 83k 15k" "$TEST_IMG" | _filter_qemu_io
 112
 113 $QEMU_IO -c "read -P 0x77 48k 15k" "$TEST_IMG" | _filter_qemu_io
 114 backing_io $((63 * 1024)) 6 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
 115 $QEMU_IO -c "read -P 0x88 66k 14k" "$TEST_IMG" | _filter_qemu_io
 116 backing_io $((80 * 1024)) 6 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
 117 $QEMU_IO -c "read -P 0x99 83k 15k" "$TEST_IMG" | _filter_qemu_io
 118 backing_io $((98 * 1024)) 4 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
 119
 120 _check_test_img
 121
 122 # success, all done
 123 echo "*** done"
 124 rm -f $seq.full
 125 status=0