tests/qemu-iotests/225

   1 #!/usr/bin/env bash
   2 #
   3 # Test vmdk backing file correlation
   4 #
   5 # Copyright (C) 2018 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 $seq"
  26
  27 status=1        # failure is the default!
  28
  29 _cleanup()
  30 {
  31     _cleanup_test_img
  32     _rm_test_img "$TEST_IMG.not_base"
  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 . ./common.qemu
  40
  41 # This tests vmdk-specific low-level functionality
  42 _supported_fmt vmdk
  43 _supported_proto file
  44 _supported_os Linux
  45 _unsupported_imgopts "subformat=monolithicFlat" \
  46                      "subformat=twoGbMaxExtentFlat" \
  47                      "subformat=twoGbMaxExtentSparse"
  48
  49 TEST_IMG="$TEST_IMG.base" _make_test_img 1M
  50 TEST_IMG="$TEST_IMG.not_base" _make_test_img 1M
  51 _make_test_img -b "$TEST_IMG.base"
  52
  53 make_opts()
  54 {
  55     node_name=$1
  56     filename=$2
  57     backing=$3
  58
  59     if [ -z "$backing" ]; then
  60         backing="null"
  61     else
  62         backing="'$backing'"
  63     fi
  64
  65     echo "{ 'node-name': '$node_name',
  66             'driver': 'vmdk',
  67             'file': {
  68                 'driver': 'file',
  69                 'filename': '$filename'
  70             },
  71             'backing': $backing }"
  72 }
  73
  74 overlay_opts=$(make_opts overlay "$TEST_IMG" backing)
  75 base_opts=$(make_opts backing "$TEST_IMG.base")
  76 not_base_opts=$(make_opts backing "$TEST_IMG.not_base")
  77
  78 not_vmdk_opts="{ 'node-name': 'backing', 'driver': 'null-co' }"
  79
  80 echo
  81 echo '=== Testing fitting VMDK backing image ==='
  82 echo
  83
  84 qemu_comm_method=monitor \
  85     _launch_qemu -blockdev "$base_opts" -blockdev "$overlay_opts"
  86
  87 # Should not return an error
  88 _send_qemu_cmd $QEMU_HANDLE 'qemu-io overlay "read 0 512"' 'ops'
  89
  90 _cleanup_qemu
  91
  92
  93 echo
  94 echo '=== Testing unrelated VMDK backing image ==='
  95 echo
  96
  97 qemu_comm_method=monitor \
  98     _launch_qemu -blockdev "$not_base_opts" -blockdev "$overlay_opts"
  99
 100 # Should fail (gracefully)
 101 _send_qemu_cmd $QEMU_HANDLE 'qemu-io overlay "read 0 512"' 'failed'
 102
 103 _cleanup_qemu
 104
 105
 106 echo
 107 echo '=== Testing non-VMDK backing image ==='
 108 echo
 109
 110 # FIXME: This is the reason why we have to use two -blockdev
 111 # invocations.  You can only fully override the backing file options
 112 # if you either specify a node reference (as done here) or the new
 113 # options contain file.filename (which in this case they do not).
 114 # In other cases, file.filename will be set to whatever the image
 115 # header of the overlay contains (which we do not want).  I consider
 116 # this a FIXME because with -blockdev, you cannot specify "partial"
 117 # options, so setting file.filename but leaving the rest as specified
 118 # by the user does not make sense.
 119 qemu_comm_method=monitor \
 120     _launch_qemu -blockdev "$not_vmdk_opts" -blockdev "$overlay_opts"
 121
 122 # Should fail (gracefully)
 123 _send_qemu_cmd $QEMU_HANDLE 'qemu-io overlay "read 0 512"' 'failed'
 124
 125 _cleanup_qemu
 126
 127
 128 # success, all done
 129 echo "*** done"
 130 rm -f $seq.full
 131 status=0