tests/qemu-iotests/175

   1 #!/usr/bin/env bash
   2 #
   3 # Test creating raw image preallocation mode
   4 #
   5 # Copyright (C) 2017 Nir Soffer <nirsof@gmail.com>
   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=nirsof@gmail.com
  23
  24 seq=`basename $0`
  25 echo "QA output created by $seq"
  26
  27 status=1        # failure is the default!
  28
  29 _cleanup()
  30 {
  31     _cleanup_test_img
  32     rm -f "$TEST_DIR/empty"
  33 }
  34 trap "_cleanup; exit \$status" 0 1 2 3 15
  35
  36 # Some file systems sometimes allocate extra blocks independently of
  37 # the file size.  This function hides the resulting difference in the
  38 # stat -c '%b' output.
  39 # Parameter 1: Number of blocks an empty file occupies
  40 # Parameter 2: Image size in bytes
  41 _filter_blocks()
  42 {
  43     extra_blocks=$1
  44     img_size=$2
  45
  46     sed -e "s/blocks=$extra_blocks\\(\$\\|[^0-9]\\)/nothing allocated/" \
  47         -e "s/blocks=$((extra_blocks + img_size / 512))\\(\$\\|[^0-9]\\)/everything allocated/"
  48 }
  49
  50 # get standard environment, filters and checks
  51 . ./common.rc
  52 . ./common.filter
  53
  54 _supported_fmt raw
  55 _supported_proto file
  56 _supported_os Linux
  57
  58 size=$((1 * 1024 * 1024))
  59
  60 touch "$TEST_DIR/empty"
  61 extra_blocks=$(stat -c '%b' "$TEST_DIR/empty")
  62
  63 echo
  64 echo "== creating image with default preallocation =="
  65 _make_test_img $size | _filter_imgfmt
  66 stat -c "size=%s, blocks=%b" $TEST_IMG | _filter_blocks $extra_blocks $size
  67
  68 for mode in off full falloc; do
  69     echo
  70     echo "== creating image with preallocation $mode =="
  71     IMGOPTS=preallocation=$mode _make_test_img $size | _filter_imgfmt
  72     stat -c "size=%s, blocks=%b" $TEST_IMG | _filter_blocks $extra_blocks $size
  73 done
  74
  75 # success, all done
  76 echo "*** done"
  77 rm -f $seq.full
  78 status=0