tests/qemu-iotests/025

   1 #!/usr/bin/env bash
   2 # group: rw auto quick
   3 #
   4 # Resizing images
   5 #
   6 # Copyright (C) 2010 IBM, Corp.
   7 #
   8 # This program is free software; you can redistribute it and/or modify
   9 # it under the terms of the GNU General Public License as published by
  10 # the Free Software Foundation; either version 2 of the License, or
  11 # (at your option) any later version.
  12 #
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 #
  21
  22 # creator
  23 owner=stefanha@linux.vnet.ibm.com
  24
  25 seq=`basename $0`
  26 echo "QA output created by $seq"
  27
  28 status=1        # failure is the default!
  29
  30 _cleanup()
  31 {
  32         _cleanup_test_img
  33 }
  34 trap "_cleanup; exit \$status" 0 1 2 3 15
  35
  36 # get standard environment, filters and checks
  37 . ./common.rc
  38 . ./common.filter
  39 . ./common.pattern
  40
  41 _supported_fmt raw qcow2 qed luks
  42 _supported_proto file rbd nfs fuse
  43
  44 echo "=== Creating image"
  45 echo
  46 small_size=$((128 * 1024 * 1024))
  47 big_size=$((384 * 1024 * 1024))
  48 _make_test_img $small_size
  49
  50 echo
  51 echo "=== Writing whole image"
  52 io_pattern write 0 $small_size 0 1 0xc5
  53 _check_test_img
  54
  55 echo
  56 echo "=== Resizing image"
  57 $QEMU_IO "$TEST_IMG" <<EOF | _filter_qemu_io
  58 length
  59 truncate $big_size
  60 length
  61 EOF
  62 _check_test_img
  63
  64 # bdrv_truncate() doesn't zero the new space, so we need to do that explicitly.
  65 # We still want to test automatic zeroing for other formats even though
  66 # bdrv_truncate() doesn't guarantee it.
  67 if [ "$IMGFMT" == "luks" ]; then
  68     $QEMU_IO -c "write -z $small_size $((big_size - small_size))" "$TEST_IMG" > /dev/null
  69 fi
  70
  71 echo
  72 echo "=== Verifying image size after reopen"
  73 $QEMU_IO -c "length" "$TEST_IMG"
  74
  75 echo
  76 echo "=== Verifying resized image"
  77 io_pattern read 0 $small_size 0 1 0xc5
  78 io_pattern read $small_size $(($big_size - $small_size)) 0 1 0
  79
  80 # success, all done
  81 echo "*** done"
  82 rm -f $seq.full
  83 status=0