019

   1 #!/bin/sh
   2 #
   3 # When using a backing file for the output image in qemu-img convert,
   4 # the backing file clusters must not copied. The data must still be
   5 # read correctly.
   6 #
   7 # Copyright (C) 2009 Red Hat, Inc.
   8 #
   9 # This program is free software; you can redistribute it and/or modify
  10 # it under the terms of the GNU General Public License as published by
  11 # the Free Software Foundation; either version 2 of the License, or
  12 # (at your option) any later version.
  13 #
  14 # This program is distributed in the hope that it will be useful,
  15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 # GNU General Public License for more details.
  18 #
  19 # You should have received a copy of the GNU General Public License
  20 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 #
  22
  23 # creator
  24 owner=kwolf@redhat.com
  25
  26 seq=`basename $0`
  27 echo "QA output created by $seq"
  28
  29 here=`pwd`
  30 tmp=/tmp/$$
  31 status=1        # failure is the default!
  32
  33 _cleanup()
  34 {
  35         _cleanup_test_img
  36     rm -f $TEST_IMG.base
  37     rm -f $TEST_IMG.orig
  38 }
  39 trap "_cleanup; exit \$status" 0 1 2 3 15
  40
  41 # get standard environment, filters and checks
  42 . ./common.rc
  43 . ./common.filter
  44 . ./common.pattern
  45
  46 # Any format supporting backing files
  47 _supported_fmt qcow qcow2 vmdk
  48 _supported_os Linux
  49
  50 TEST_OFFSETS="0 4294967296"
  51
  52 _make_test_img 6G
  53
  54 echo "Filling base image"
  55 echo
  56
  57 for offset in $TEST_OFFSETS; do
  58     # Some clusters with alternating backing file/image file reads
  59     io writev $(( offset )) 512 1024 64
  60
  61     # Complete backing clusters
  62     io writev $(( offset  + 1024 * 1024))  65536 65536 1
  63 done
  64 _check_test_img
  65
  66 echo "Creating test image with backing file"
  67 echo
  68
  69 mv $TEST_IMG $TEST_IMG.base
  70 _make_test_img -b $TEST_IMG.base 6G
  71
  72 echo "Filling test image"
  73 echo
  74
  75 for offset in $TEST_OFFSETS; do
  76     # Some clusters with alternating backing file/image file reads
  77     io writev $(( offset + 512 )) 512 1024 64
  78
  79     # Complete test image clusters
  80     io writev $(( offset + 1024 * 1024 + 65536))  65536 65536 1
  81 done
  82 _check_test_img
  83
  84 mv $TEST_IMG $TEST_IMG.orig
  85 $QEMU_IMG convert -O $IMGFMT -B $TEST_IMG.base $TEST_IMG.orig $TEST_IMG
  86
  87 echo "Checking if backing clusters are allocated when they shouldn't"
  88 echo
  89 for offset in $TEST_OFFSETS; do
  90     # Complete backing clusters
  91     is_allocated $(( offset  + 1024 * 1024))  65536 65536 1
  92 done
  93
  94 echo "Reading"
  95 echo
  96
  97 for offset in $TEST_OFFSETS; do
  98     # Some clusters with alternating backing file/image file reads
  99     io readv $(( offset )) 512 1024 64
 100     io readv $(( offset + 512 )) 512 1024 64
 101
 102     # Complete test image clusters
 103     io readv $(( offset  + 1024 * 1024))  65536 65536 1
 104     io readv $(( offset + 1024 * 1024 + 65536))  65536 65536 1
 105
 106     # Empty sectors
 107     io_zero readv $(( offset + 1024 * 1024 + 65536 * 4 )) 65536 65536 1
 108 done
 109 _check_test_img
 110
 111 # success, all done
 112 echo "*** done"
 113 rm -f $seq.full
 114 status=0