tests/qemu-iotests/292

   1 #!/usr/bin/env bash
   2 #
   3 # Test resizing a qcow2 image with a backing file
   4 #
   5 # Copyright (C) 2020 Igalia, S.L.
   6 # Author: Alberto Garcia <berto@igalia.com>
   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=berto@igalia.com
  24
  25 seq=`basename $0`
  26 echo "QA output created by $seq"
  27
  28 status=1    # failure is the default!
  29
  30 _cleanup()
  31 {
  32     _cleanup_test_img
  33 }
  34 trap "_cleanup; exit \$status" 0 1 2 3 15
  35
  36 # get standard environment, filters and checks
  37 . ./common.rc
  38 . ./common.filter
  39
  40 _supported_fmt qcow2
  41 _supported_proto file
  42 _supported_os Linux
  43 # We need qemu-img map to show the file where the data is allocated,
  44 # but with an external data file, it will show that instead of the
  45 # file we want to check.  So just skip this test for external data
  46 # files.
  47 _unsupported_imgopts data_file
  48
  49 echo '### Create the backing image'
  50 BACKING_IMG="$TEST_IMG.base"
  51 TEST_IMG="$BACKING_IMG" _make_test_img 1M
  52
  53 echo '### Fill the backing image with data (0x11)'
  54 $QEMU_IO -c 'write -P 0x11 0 1M' "$BACKING_IMG" | _filter_qemu_io
  55
  56 echo '### Create the top image'
  57 _make_test_img -F "$IMGFMT" -b "$BACKING_IMG"
  58
  59 echo '### Fill the top image with data (0x22)'
  60 $QEMU_IO -c 'write -P 0x22 0 1M' "$TEST_IMG" | _filter_qemu_io
  61
  62 # Both offsets are part of the same cluster.
  63 echo '### Shrink the image to 520k'
  64 $QEMU_IMG resize --shrink "$TEST_IMG" 520k
  65 echo '### Grow the image to 567k'
  66 $QEMU_IMG resize "$TEST_IMG" 567k
  67
  68 echo '### Check that the tail of the image reads as zeroes'
  69 $QEMU_IO -c 'read -P 0x22    0 520k' "$TEST_IMG" | _filter_qemu_io
  70 $QEMU_IO -c 'read -P 0x00 520k  47k' "$TEST_IMG" | _filter_qemu_io
  71
  72 echo '### Show output of qemu-img map'
  73 $QEMU_IMG map "$TEST_IMG" | _filter_testdir
  74
  75 # success, all done
  76 echo "*** done"
  77 rm -f $seq.full
  78 status=0