tests/qemu-iotests/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 qed
  48 _supported_proto file
  49 _supported_os Linux
  50 _unsupported_imgopts "subformat=monolithicFlat" \
  51                      "subformat=twoGbMaxExtentFlat" \
  52                      "subformat=twoGbMaxExtentSparse"
  53
  54 TEST_OFFSETS="0 4294967296"
  55 CLUSTER_SIZE=65536
  56
  57 TEST_IMG_SAVE="$TEST_IMG"
  58 TEST_IMG="$TEST_IMG.base"
  59
  60 _make_test_img 6G
  61
  62 echo "Filling base image"
  63 echo
  64
  65 for offset in $TEST_OFFSETS; do
  66     # Some clusters with alternating backing file/image file reads
  67     io_pattern writev $(( offset )) 512 1024 64 42
  68
  69     # Complete backing clusters
  70     io_pattern writev $(( offset  + 1024 * 1024))  $CLUSTER_SIZE $CLUSTER_SIZE 1 42
  71 done
  72 _check_test_img
  73
  74 echo "Creating test image with backing file"
  75 echo
  76
  77 TEST_IMG="$TEST_IMG_SAVE.orig"
  78 _make_test_img -b "$TEST_IMG_SAVE.base" 6G
  79
  80 echo "Filling test image"
  81 echo
  82
  83 for offset in $TEST_OFFSETS; do
  84     # Some clusters with alternating backing file/image file reads
  85     io_pattern writev $(( offset + 512 )) 512 1024 64 43
  86
  87     # Complete test image clusters
  88     io_pattern writev $(( offset + 1024 * 1024 + $CLUSTER_SIZE))  $CLUSTER_SIZE $CLUSTER_SIZE 1 43
  89 done
  90 _check_test_img
  91
  92 TEST_IMG="$TEST_IMG_SAVE"
  93
  94 # Test the conversion twice: One test with the old-style -B option and another
  95 # one with -o backing_file
  96
  97 for backing_option in "-B " "-o backing_file="; do
  98
  99     echo
 100     echo Testing conversion with $backing_option"$TEST_IMG.base" | _filter_testdir | _filter_imgfmt
 101     echo
 102     $QEMU_IMG convert -f $IMGFMT -O $IMGFMT $backing_option"$TEST_IMG.base" "$TEST_IMG.orig" "$TEST_IMG"
 103
 104     echo "Checking if backing clusters are allocated when they shouldn't"
 105     echo
 106     for offset in $TEST_OFFSETS; do
 107         # Complete backing clusters
 108         is_allocated $(( offset  + 1024 * 1024))  $CLUSTER_SIZE $CLUSTER_SIZE 1
 109     done
 110
 111     echo "Reading"
 112     echo
 113
 114     for offset in $TEST_OFFSETS; do
 115         # Some clusters with alternating backing file/image file reads
 116         io_pattern readv $(( offset )) 512 1024 64 42
 117         io_pattern readv $(( offset + 512 )) 512 1024 64 43
 118
 119         # Complete test image clusters
 120         io_pattern readv $(( offset  + 1024 * 1024))  $CLUSTER_SIZE $CLUSTER_SIZE 1 42
 121         io_pattern readv $(( offset + 1024 * 1024 + $CLUSTER_SIZE))  $CLUSTER_SIZE $CLUSTER_SIZE 1 43
 122
 123         # Empty sectors
 124         io_zero readv $(( offset + 1024 * 1024 + $CLUSTER_SIZE * 4 )) $CLUSTER_SIZE $CLUSTER_SIZE 1
 125     done
 126     _check_test_img
 127
 128 done
 129
 130 # success, all done
 131 echo "*** done"
 132 rm -f $seq.full
 133 status=0