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
  46 _supported_os Linux
  47
  48 TEST_OFFSETS="0 4294967296"
  49
  50 _make_test_img 6G
  51
  52 echo "Filling base image"
  53 echo
  54
  55 for offset in $TEST_OFFSETS; do
  56     # Some clusters with alternating backing file/image file reads
  57     io writev $(( offset )) 512 1024 64
  58
  59     # Complete backing clusters
  60     io writev $(( offset  + 64 * 1024))  65536 65536 1
  61 done
  62 _check_test_img
  63
  64 echo "Creating test image with backing file"
  65 echo
  66
  67 mv $TEST_IMG $TEST_IMG.base
  68 _make_test_img -b $TEST_IMG.base 6G
  69
  70 echo "Filling test image"
  71 echo
  72
  73 for offset in $TEST_OFFSETS; do
  74     # Some clusters with alternating backing file/image file reads
  75     io writev $(( offset + 512 )) 512 1024 64
  76
  77     # Complete test image clusters
  78     io writev $(( offset + 64 * 1024 + 65536))  65536 65536 1
  79 done
  80 _check_test_img
  81
  82 $QEMU_IMG commit $TEST_IMG
  83 mv $TEST_IMG.base $TEST_IMG
  84
  85 echo "Reading from the backing file"
  86 echo
  87
  88 for offset in $TEST_OFFSETS; do
  89     # Some clusters with alternating backing file/image file reads
  90     io readv $(( offset )) 512 1024 64
  91     io readv $(( offset + 512 )) 512 1024 64
  92
  93     # Complete test image clusters
  94     io readv $(( offset  + 64 * 1024))  65536 65536 1
  95     io readv $(( offset + 64 * 1024 + 65536))  65536 65536 1
  96
  97     # Empty sectors
  98     io_zero readv $(( offset + 64 * 1024 + 65536 * 4 )) 65536 65536 1
  99 done
 100 _check_test_img
 101
 102 # success, all done
 103 echo "*** done"
 104 rm -f $seq.full
 105 status=0