tests/qemu-iotests/037

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