tests/qemu-iotests/292

   1 #!/usr/bin/env bash
   2 # group: rw auto quick
   3 #
   4 # Test resizing a qcow2 image with a backing file
   5 #
   6 # Copyright (C) 2020 Igalia, S.L.
   7 # Author: Alberto Garcia <berto@igalia.com>
   8 #
   9 # This program is free software; you can redistribute it and/or modify
  10 # it under the terms of the GNU General Public License as published by
  11 # the Free Software Foundation; either version 2 of the License, or
  12 # (at your option) any later version.
  13 #
  14 # This program is distributed in the hope that it will be useful,
  15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 # GNU General Public License for more details.
  18 #
  19 # You should have received a copy of the GNU General Public License
  20 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 #
  22
  23 # creator
  24 owner=berto@igalia.com
  25
  26 seq=`basename $0`
  27 echo "QA output created by $seq"
  28
  29 status=1    # failure is the default!
  30
  31 _cleanup()
  32 {
  33     _cleanup_test_img
  34 }
  35 trap "_cleanup; exit \$status" 0 1 2 3 15
  36
  37 # get standard environment, filters and checks
  38 . ./common.rc
  39 . ./common.filter
  40
  41 _supported_fmt qcow2
  42 _supported_proto file fuse
  43 _supported_os Linux
  44 # We need qemu-img map to show the file where the data is allocated,
  45 # but with an external data file, it will show that instead of the
  46 # file we want to check.  So just skip this test for external data
  47 # files.
  48 _unsupported_imgopts data_file
  49
  50 echo '### Create the backing image'
  51 BACKING_IMG="$TEST_IMG.base"
  52 TEST_IMG="$BACKING_IMG" _make_test_img 1M
  53
  54 echo '### Fill the backing image with data (0x11)'
  55 $QEMU_IO -c 'write -P 0x11 0 1M' "$BACKING_IMG" | _filter_qemu_io
  56
  57 echo '### Create the top image'
  58 _make_test_img -F "$IMGFMT" -b "$BACKING_IMG"
  59
  60 echo '### Fill the top image with data (0x22)'
  61 $QEMU_IO -c 'write -P 0x22 0 1M' "$TEST_IMG" | _filter_qemu_io
  62
  63 # Both offsets are part of the same cluster.
  64 echo '### Shrink the image to 520k'
  65 $QEMU_IMG resize --shrink "$TEST_IMG" 520k
  66 echo '### Grow the image to 567k'
  67 $QEMU_IMG resize "$TEST_IMG" 567k
  68
  69 echo '### Check that the tail of the image reads as zeroes'
  70 $QEMU_IO -c 'read -P 0x22    0 520k' "$TEST_IMG" | _filter_qemu_io
  71 $QEMU_IO -c 'read -P 0x00 520k  47k' "$TEST_IMG" | _filter_qemu_io
  72
  73 echo '### Show output of qemu-img map'
  74 $QEMU_IMG map "$TEST_IMG" | _filter_testdir
  75
  76 # success, all done
  77 echo "*** done"
  78 rm -f $seq.full
  79 status=0