tests/qemu-iotests/110

   1 #!/bin/bash
   2 #
   3 # Test case for relative backing file names in complex BDS trees
   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=mreitz@redhat.com
  23
  24 seq="$(basename $0)"
  25 echo "QA output created by $seq"
  26
  27 here="$PWD"
  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 # Any format supporting backing files
  41 _supported_fmt qed qcow qcow2 vmdk
  42 _supported_proto file
  43 _supported_os Linux
  44 _unsupported_imgopts "subformat=monolithicFlat" "subformat=twoGbMaxExtentFlat"
  45
  46 TEST_IMG_REL=$(basename "$TEST_IMG")
  47
  48 echo
  49 echo '=== Reconstructable filename ==='
  50 echo
  51
  52 TEST_IMG="$TEST_IMG.base" _make_test_img 64M
  53 _make_test_img -b "$TEST_IMG_REL.base" 64M
  54 # qemu should be able to reconstruct the filename, so relative backing names
  55 # should work
  56 TEST_IMG="json:{'driver':'$IMGFMT','file':{'driver':'file','filename':'$TEST_IMG'}}" \
  57     _img_info | _filter_img_info
  58
  59 echo
  60 echo '=== Non-reconstructable filename ==='
  61 echo
  62
  63 # Across blkdebug without a config file, you cannot reconstruct filenames, so
  64 # qemu is incapable of knowing the directory of the top image
  65 TEST_IMG="json:{
  66     'driver': '$IMGFMT',
  67     'file': {
  68         'driver': 'blkdebug',
  69         'image': {
  70             'driver': 'file',
  71             'filename': '$TEST_IMG'
  72         },
  73         'set-state': [
  74             {
  75                 'event': 'read_aio',
  76                 'new_state': 42
  77             }
  78         ]
  79     }
  80 }" _img_info | _filter_img_info
  81
  82 echo
  83 echo '=== Backing name is always relative to the backed image ==='
  84 echo
  85
  86 # omit the image size; it should work anyway
  87 _make_test_img -b "$TEST_IMG_REL.base"
  88
  89
  90 # success, all done
  91 echo '*** done'
  92 rm -f $seq.full
  93 status=0