tests/qemu-iotests/025

   1 #!/usr/bin/env bash
   2 #
   3 # Resizing images
   4 #
   5 # Copyright (C) 2010 IBM, Corp.
   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=stefanha@linux.vnet.ibm.com
  23
  24 seq=`basename $0`
  25 echo "QA output created by $seq"
  26
  27 status=1        # failure is the default!
  28
  29 _cleanup()
  30 {
  31         _cleanup_test_img
  32 }
  33 trap "_cleanup; exit \$status" 0 1 2 3 15
  34
  35 # get standard environment, filters and checks
  36 . ./common.rc
  37 . ./common.filter
  38 . ./common.pattern
  39
  40 _supported_fmt raw qcow2 qed luks
  41 _supported_proto file sheepdog rbd nfs
  42
  43 echo "=== Creating image"
  44 echo
  45 small_size=$((128 * 1024 * 1024))
  46 big_size=$((384 * 1024 * 1024))
  47 _make_test_img $small_size
  48
  49 echo
  50 echo "=== Writing whole image"
  51 io_pattern write 0 $small_size 0 1 0xc5
  52 _check_test_img
  53
  54 echo
  55 echo "=== Resizing image"
  56 $QEMU_IO "$TEST_IMG" <<EOF | _filter_qemu_io
  57 length
  58 truncate $big_size
  59 length
  60 EOF
  61 _check_test_img
  62
  63 # bdrv_truncate() doesn't zero the new space, so we need to do that explicitly.
  64 # We still want to test automatic zeroing for other formats even though
  65 # bdrv_truncate() doesn't guarantee it.
  66 if [ "$IMGFMT" == "luks" ]; then
  67     $QEMU_IO -c "write -z $small_size $((big_size - small_size))" "$TEST_IMG" > /dev/null
  68 fi
  69
  70 echo
  71 echo "=== Verifying image size after reopen"
  72 $QEMU_IO -c "length" "$TEST_IMG"
  73
  74 echo
  75 echo "=== Verifying resized image"
  76 io_pattern read 0 $small_size 0 1 0xc5
  77 io_pattern read $small_size $(($big_size - $small_size)) 0 1 0
  78
  79 # success, all done
  80 echo "*** done"
  81 rm -f $seq.full
  82 status=0