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 $seq"
  26
  27 here=`pwd`
  28 status=1        # failure is the default!
  29
  30 _cleanup()
  31 {
  32         _cleanup_test_img
  33 }
  34 trap "_cleanup; exit \$status" 0 1 2 3 15
  35
  36 # get standard environment, filters and checks
  37 . ./common.rc
  38 . ./common.filter
  39
  40 _supported_fmt qcow qcow2 vmdk qed
  41 _supported_proto file
  42 _supported_os Linux
  43 _unsupported_imgopts "subformat=monolithicFlat" \
  44                      "subformat=twoGbMaxExtentFlat" \
  45                      "subformat=twoGbMaxExtentSparse"
  46
  47 CLUSTER_SIZE=4k
  48 size=128M
  49
  50 echo
  51 echo "== creating backing file for COW tests =="
  52
  53 TEST_IMG_SAVE="$TEST_IMG"
  54 TEST_IMG="$TEST_IMG.base"
  55
  56 _make_test_img $size
  57
  58 function backing_io()
  59 {
  60     local offset=$1
  61     local sectors=$2
  62     local op=$3
  63     local pattern=0
  64     local cur_sec=0
  65
  66     for i in $(seq 0 $((sectors - 1))); do
  67         cur_sec=$((offset / 512 + i))
  68         pattern=$(( ( (cur_sec % 256) + (cur_sec / 256)) % 256 ))
  69
  70         echo "$op -P $pattern $((cur_sec * 512)) 512"
  71     done
  72 }
  73
  74 backing_io 0 256 write | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
  75
  76 TEST_IMG="$TEST_IMG_SAVE"
  77
  78 _make_test_img -b "$TEST_IMG.base" 6G
  79
  80 echo
  81 echo "== COW in a single cluster =="
  82 $QEMU_IO -c "write -P 0x77 0 2k" "$TEST_IMG" | _filter_qemu_io
  83 $QEMU_IO -c "write -P 0x88 6k 2k" "$TEST_IMG" | _filter_qemu_io
  84 $QEMU_IO -c "write -P 0x99 9k 2k" "$TEST_IMG" | _filter_qemu_io
  85
  86 $QEMU_IO -c "read -P 0x77 0 2k" "$TEST_IMG" | _filter_qemu_io
  87 backing_io $((2 * 1024)) 8 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
  88 $QEMU_IO -c "read -P 0x88 6k 2k" "$TEST_IMG" | _filter_qemu_io
  89 backing_io $((8 * 1024)) 2 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
  90 $QEMU_IO -c "read -P 0x99 9k 2k" "$TEST_IMG" | _filter_qemu_io
  91 backing_io $((11 * 1024)) 2 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
  92
  93 echo
  94 echo "== COW in two-cluster allocations =="
  95 $QEMU_IO -c "write -P 0x77 16k 6k" "$TEST_IMG" | _filter_qemu_io
  96 $QEMU_IO -c "write -P 0x88 26k 6k" "$TEST_IMG" | _filter_qemu_io
  97 $QEMU_IO -c "write -P 0x99 33k 5k" "$TEST_IMG" | _filter_qemu_io
  98
  99 $QEMU_IO -c "read -P 0x77 16k 6k" "$TEST_IMG" | _filter_qemu_io
 100 backing_io $((22 * 1024)) 8 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
 101 $QEMU_IO -c "read -P 0x88 26k 6k" "$TEST_IMG" | _filter_qemu_io
 102 backing_io $((32 * 1024)) 2 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
 103 $QEMU_IO -c "read -P 0x99 33k 5k" "$TEST_IMG" | _filter_qemu_io
 104 backing_io $((38 * 1024)) 4 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
 105
 106 echo
 107 echo "== COW in multi-cluster allocations =="
 108 $QEMU_IO -c "write -P 0x77 48k 15k" "$TEST_IMG" | _filter_qemu_io
 109 $QEMU_IO -c "write -P 0x88 66k 14k" "$TEST_IMG" | _filter_qemu_io
 110 $QEMU_IO -c "write -P 0x99 83k 15k" "$TEST_IMG" | _filter_qemu_io
 111
 112 $QEMU_IO -c "read -P 0x77 48k 15k" "$TEST_IMG" | _filter_qemu_io
 113 backing_io $((63 * 1024)) 6 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
 114 $QEMU_IO -c "read -P 0x88 66k 14k" "$TEST_IMG" | _filter_qemu_io
 115 backing_io $((80 * 1024)) 6 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
 116 $QEMU_IO -c "read -P 0x99 83k 15k" "$TEST_IMG" | _filter_qemu_io
 117 backing_io $((98 * 1024)) 4 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
 118
 119 _check_test_img
 120
 121 # success, all done
 122 echo "*** done"
 123 rm -f $seq.full
 124 status=0