tests/qemu-iotests/020

   1 #!/bin/bash
   2 #
   3 # Commit changes to backing file
   4 #
   5 # Copyright (C) 2009 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 here=`pwd`
  28 tmp=/tmp/$$
  29 status=1        # failure is the default!
  30
  31 _cleanup()
  32 {
  33         _cleanup_test_img
  34     rm -f "$TEST_IMG.base"
  35     rm -f "$TEST_IMG.orig"
  36 }
  37 trap "_cleanup; exit \$status" 0 1 2 3 15
  38
  39 # get standard environment, filters and checks
  40 . ./common.rc
  41 . ./common.filter
  42 . ./common.pattern
  43
  44 # Any format supporting backing files
  45 _supported_fmt qcow qcow2 vmdk qed
  46 _supported_proto generic
  47 _supported_os Linux
  48 _unsupported_imgopts "subformat=monolithicFlat" \
  49                      "subformat=twoGbMaxExtentFlat" \
  50                      "subformat=twoGbMaxExtentSparse"
  51
  52 # NFS does not support bdrv_reopen_prepare thus qemu-img commit fails.
  53 if [ "$IMGPROTO" = "nfs" ]; then
  54     _notrun "image protocol $IMGPROTO does not support bdrv_commit"
  55 fi
  56
  57 TEST_OFFSETS="0 4294967296"
  58
  59 TEST_IMG_SAVE="$TEST_IMG"
  60 TEST_IMG="$TEST_IMG.base"
  61
  62 _make_test_img 6G
  63
  64 echo "Filling base image"
  65 echo
  66
  67 for offset in $TEST_OFFSETS; do
  68     # Some clusters with alternating backing file/image file reads
  69     io writev $(( offset )) 512 1024 64
  70
  71     # Complete backing clusters
  72     io writev $(( offset  + 64 * 1024))  65536 65536 1
  73 done
  74 _check_test_img
  75
  76 echo "Creating test image with backing file"
  77 echo
  78
  79 TEST_IMG="$TEST_IMG_SAVE"
  80 _make_test_img -b "$TEST_IMG.base" 6G
  81
  82 echo "Filling test image"
  83 echo
  84
  85 for offset in $TEST_OFFSETS; do
  86     # Some clusters with alternating backing file/image file reads
  87     io writev $(( offset + 512 )) 512 1024 64
  88
  89     # Complete test image clusters
  90     io writev $(( offset + 64 * 1024 + 65536))  65536 65536 1
  91 done
  92 _check_test_img
  93
  94 $QEMU_IMG commit "$TEST_IMG"
  95 TEST_IMG="$TEST_IMG.base"
  96
  97 echo "Reading from the backing file"
  98 echo
  99
 100 for offset in $TEST_OFFSETS; do
 101     # Some clusters with alternating backing file/image file reads
 102     io readv $(( offset )) 512 1024 64
 103     io readv $(( offset + 512 )) 512 1024 64
 104
 105     # Complete test image clusters
 106     io readv $(( offset  + 64 * 1024))  65536 65536 1
 107     io readv $(( offset + 64 * 1024 + 65536))  65536 65536 1
 108
 109     # Empty sectors
 110     io_zero readv $(( offset + 64 * 1024 + 65536 * 4 )) 65536 65536 1
 111 done
 112 _check_test_img
 113
 114 # success, all done
 115 echo "*** done"
 116 rm -f $seq.full
 117 status=0