tests/qemu-iotests/114

   1 #!/usr/bin/env bash
   2 #
   3 # Test invalid backing file format in qcow2 images
   4 #
   5 # Copyright (C) 2014 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=kwolf@redhat.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
  39 _supported_fmt qcow2
  40 _supported_proto generic
  41 # At least OpenBSD doesn't seem to have truncate
  42 _supported_os Linux
  43 # qcow2.py does not work too well with external data files
  44 _unsupported_imgopts data_file
  45
  46 # Intentionally specify backing file without backing format; demonstrate
  47 # the difference in warning messages when backing file could be probed.
  48 # Note that only a non-raw probe result will affect the resulting image.
  49 truncate -s $((64 * 1024 * 1024)) "$TEST_IMG.orig"
  50 _make_test_img -b "$TEST_IMG.orig" 64M
  51
  52 TEST_IMG="$TEST_IMG.base" _make_test_img 64M
  53 $QEMU_IMG convert -O qcow2 -B "$TEST_IMG.orig" "$TEST_IMG.orig" "$TEST_IMG"
  54 _make_test_img -b "$TEST_IMG.base" 64M
  55 _make_test_img -u -b "$TEST_IMG.base" 64M
  56
  57 # Set an invalid backing file format
  58 $PYTHON qcow2.py "$TEST_IMG" add-header-ext 0xE2792ACA "foo"
  59 _img_info
  60
  61 # Try opening the image. Should fail (and not probe) in the first case, but
  62 # overriding the backing file format should be possible.
  63 $QEMU_IO -c "open $TEST_IMG" -c "read 0 4k" 2>&1 | _filter_qemu_io | _filter_testdir
  64 $QEMU_IO -c "open -o backing.driver=$IMGFMT $TEST_IMG" -c "read 0 4k" | _filter_qemu_io
  65
  66 # Rebase the image, to show that omitting backing format triggers a warning,
  67 # but probing now lets us use the backing file.
  68 $QEMU_IMG rebase -u -b "$TEST_IMG.base" "$TEST_IMG"
  69 $QEMU_IO -c "open $TEST_IMG" -c "read 0 4k" 2>&1 | _filter_qemu_io | _filter_testdir
  70
  71 # success, all done
  72 echo '*** done'
  73 rm -f $seq.full
  74 status=0