tests/qemu-iotests/114

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