019

   1 #!/bin/bash
   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 CLUSTER_SIZE=65536
  52
  53 _make_test_img 6G
  54
  55 echo "Filling base image"
  56 echo
  57
  58 for offset in $TEST_OFFSETS; do
  59     # Some clusters with alternating backing file/image file reads
  60     io writev $(( offset )) 512 1024 64
  61
  62     # Complete backing clusters
  63     io writev $(( offset  + 1024 * 1024))  $CLUSTER_SIZE $CLUSTER_SIZE 1
  64 done
  65 _check_test_img
  66
  67 echo "Creating test image with backing file"
  68 echo
  69
  70 mv $TEST_IMG $TEST_IMG.base
  71 _make_test_img -b $TEST_IMG.base 6G
  72
  73 echo "Filling test image"
  74 echo
  75
  76 for offset in $TEST_OFFSETS; do
  77     # Some clusters with alternating backing file/image file reads
  78     io writev $(( offset + 512 )) 512 1024 64
  79
  80     # Complete test image clusters
  81     io writev $(( offset + 1024 * 1024 + $CLUSTER_SIZE))  $CLUSTER_SIZE $CLUSTER_SIZE 1
  82 done
  83 _check_test_img
  84
  85 mv $TEST_IMG $TEST_IMG.orig
  86 $QEMU_IMG convert -O $IMGFMT -B $TEST_IMG.base $TEST_IMG.orig $TEST_IMG
  87
  88 echo "Checking if backing clusters are allocated when they shouldn't"
  89 echo
  90 for offset in $TEST_OFFSETS; do
  91     # Complete backing clusters
  92     is_allocated $(( offset  + 1024 * 1024))  $CLUSTER_SIZE $CLUSTER_SIZE 1
  93 done
  94
  95 echo "Reading"
  96 echo
  97
  98 for offset in $TEST_OFFSETS; do
  99     # Some clusters with alternating backing file/image file reads
 100     io readv $(( offset )) 512 1024 64
 101     io readv $(( offset + 512 )) 512 1024 64
 102
 103     # Complete test image clusters
 104     io readv $(( offset  + 1024 * 1024))  $CLUSTER_SIZE $CLUSTER_SIZE 1
 105     io readv $(( offset + 1024 * 1024 + $CLUSTER_SIZE))  $CLUSTER_SIZE $CLUSTER_SIZE 1
 106
 107     # Empty sectors
 108     io_zero readv $(( offset + 1024 * 1024 + $CLUSTER_SIZE * 4 )) $CLUSTER_SIZE $CLUSTER_SIZE 1
 109 done
 110 _check_test_img
 111
 112 # success, all done
 113 echo "*** done"
 114 rm -f $seq.full
 115 status=0