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 $seq"
  26
  27 here=`pwd`
  28 status=1        # failure is the default!
  29
  30 _cleanup()
  31 {
  32         _cleanup_test_img
  33     rm -f "$TEST_IMG.base"
  34     rm -f "$TEST_IMG.orig"
  35 }
  36 trap "_cleanup; exit \$status" 0 1 2 3 15
  37
  38 # get standard environment, filters and checks
  39 . ./common.rc
  40 . ./common.filter
  41 . ./common.pattern
  42
  43 # Any format supporting backing files
  44 _supported_fmt qcow qcow2 vmdk qed
  45 _supported_proto generic
  46 _supported_os Linux
  47 _unsupported_imgopts "subformat=monolithicFlat" \
  48                      "subformat=twoGbMaxExtentFlat" \
  49                      "subformat=twoGbMaxExtentSparse"
  50
  51 # NFS does not support bdrv_reopen_prepare thus qemu-img commit fails.
  52 if [ "$IMGPROTO" = "nfs" ]; then
  53     _notrun "image protocol $IMGPROTO does not support bdrv_commit"
  54 fi
  55
  56 TEST_OFFSETS="0 4294967296"
  57
  58 TEST_IMG_SAVE="$TEST_IMG"
  59 TEST_IMG="$TEST_IMG.base"
  60
  61 _make_test_img 6G
  62
  63 echo "Filling base image"
  64 echo
  65
  66 for offset in $TEST_OFFSETS; do
  67     # Some clusters with alternating backing file/image file reads
  68     io writev $(( offset )) 512 1024 64
  69
  70     # Complete backing clusters
  71     io writev $(( offset  + 64 * 1024))  65536 65536 1
  72 done
  73 _check_test_img
  74
  75 echo "Creating test image with backing file"
  76 echo
  77
  78 TEST_IMG="$TEST_IMG_SAVE"
  79 _make_test_img -b "$TEST_IMG.base" 6G
  80
  81 echo "Filling test image"
  82 echo
  83
  84 for offset in $TEST_OFFSETS; do
  85     # Some clusters with alternating backing file/image file reads
  86     io writev $(( offset + 512 )) 512 1024 64
  87
  88     # Complete test image clusters
  89     io writev $(( offset + 64 * 1024 + 65536))  65536 65536 1
  90 done
  91 _check_test_img
  92
  93 $QEMU_IMG commit "$TEST_IMG"
  94 TEST_IMG="$TEST_IMG.base"
  95
  96 echo "Reading from the backing file"
  97 echo
  98
  99 for offset in $TEST_OFFSETS; do
 100     # Some clusters with alternating backing file/image file reads
 101     io readv $(( offset )) 512 1024 64
 102     io readv $(( offset + 512 )) 512 1024 64
 103
 104     # Complete test image clusters
 105     io readv $(( offset  + 64 * 1024))  65536 65536 1
 106     io readv $(( offset + 64 * 1024 + 65536))  65536 65536 1
 107
 108     # Empty sectors
 109     io_zero readv $(( offset + 64 * 1024 + 65536 * 4 )) 65536 65536 1
 110 done
 111 _check_test_img
 112
 113 # success, all done
 114 echo "*** done"
 115 rm -f $seq.full
 116 status=0