tests/qemu-iotests/150

   1 #!/bin/bash
   2 #
   3 # Test that qemu-img convert -S 0 fully allocates the target image
   4 #
   5 # Copyright (C) 2016 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=mreitz@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 generic
  42 _supported_proto file
  43 _supported_os Linux
  44
  45
  46 on_disk_size()
  47 {
  48     du "$@" | sed -e 's/\t\+.*//'
  49 }
  50
  51
  52 img_size=1048576
  53
  54
  55 echo
  56 echo '=== Comparing empty image against sparse conversion ==='
  57 echo
  58
  59 _make_test_img $img_size
  60
  61 empty_size=$(on_disk_size "$TEST_IMG")
  62
  63
  64 $QEMU_IMG_PROG convert -O "$IMGFMT" -S 512 \
  65     "json:{ 'driver': 'null-co', 'size': $img_size, 'read-zeroes': true }" \
  66     "$TEST_IMG"
  67
  68 sparse_convert_size=$(on_disk_size "$TEST_IMG")
  69
  70
  71 if [ "$empty_size" -eq "$sparse_convert_size" ]; then
  72     echo 'Equal image size'
  73 else
  74     echo 'Different image size'
  75 fi
  76
  77
  78 echo
  79 echo '=== Comparing full image against non-sparse conversion ==='
  80 echo
  81
  82 _make_test_img $img_size
  83 $QEMU_IO -c "write 0 $img_size" "$TEST_IMG" | _filter_qemu_io
  84
  85 full_size=$(on_disk_size "$TEST_IMG")
  86
  87
  88 $QEMU_IMG convert -O "$IMGFMT" -S 0 \
  89     "json:{ 'driver': 'null-co', 'size': $img_size, 'read-zeroes': true }" \
  90     "$TEST_IMG"
  91
  92 non_sparse_convert_size=$(on_disk_size "$TEST_IMG")
  93
  94
  95 if [ "$full_size" -eq "$non_sparse_convert_size" ]; then
  96     echo 'Equal image size'
  97 else
  98     echo 'Different image size'
  99 fi
 100
 101
 102 # success, all done
 103 echo "*** done"
 104 rm -f $seq.full
 105 status=0