tests/qemu-iotests/019

   1 #!/usr/bin/env bash
   2 # group: rw backing auto quick
   3 #
   4 # When using a backing file for the output image in qemu-img convert,
   5 # the backing file clusters must not copied. The data must still be
   6 # read correctly.
   7 #
   8 # Copyright (C) 2009 Red Hat, Inc.
   9 #
  10 # This program is free software; you can redistribute it and/or modify
  11 # it under the terms of the GNU General Public License as published by
  12 # the Free Software Foundation; either version 2 of the License, or
  13 # (at your option) any later version.
  14 #
  15 # This program is distributed in the hope that it will be useful,
  16 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 # GNU General Public License for more details.
  19 #
  20 # You should have received a copy of the GNU General Public License
  21 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22 #
  23
  24 # creator
  25 owner=kwolf@redhat.com
  26
  27 seq=`basename $0`
  28 echo "QA output created by $seq"
  29
  30 status=1        # failure is the default!
  31
  32 _cleanup()
  33 {
  34     _cleanup_test_img
  35     _rm_test_img "$TEST_IMG.base"
  36     _rm_test_img "$TEST_IMG.orig"
  37 }
  38 trap "_cleanup; exit \$status" 0 1 2 3 15
  39
  40 # get standard environment, filters and checks
  41 . ./common.rc
  42 . ./common.filter
  43 . ./common.pattern
  44
  45 # Any format supporting backing files
  46 _supported_fmt qcow qcow2 vmdk qed
  47 _supported_proto file
  48 _supported_os Linux
  49 _unsupported_imgopts "subformat=monolithicFlat" \
  50                      "subformat=twoGbMaxExtentFlat" \
  51                      "subformat=twoGbMaxExtentSparse" \
  52                      "subformat=streamOptimized"
  53
  54 TEST_OFFSETS="0 4294967296"
  55 CLUSTER_SIZE=65536
  56
  57 TEST_IMG_SAVE="$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" -F $IMGFMT 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" \
 103         -o backing_fmt=$IMGFMT "$TEST_IMG.orig" "$TEST_IMG"
 104
 105     echo "Checking if backing clusters are allocated when they shouldn't"
 106     echo
 107     for offset in $TEST_OFFSETS; do
 108         # Complete backing clusters
 109         is_allocated $(( offset  + 1024 * 1024))  $CLUSTER_SIZE $CLUSTER_SIZE 1
 110     done
 111
 112     echo "Reading"
 113     echo
 114
 115     for offset in $TEST_OFFSETS; do
 116         # Some clusters with alternating backing file/image file reads
 117         io_pattern readv $(( offset )) 512 1024 64 42
 118         io_pattern readv $(( offset + 512 )) 512 1024 64 43
 119
 120         # Complete test image clusters
 121         io_pattern readv $(( offset  + 1024 * 1024))  $CLUSTER_SIZE $CLUSTER_SIZE 1 42
 122         io_pattern readv $(( offset + 1024 * 1024 + $CLUSTER_SIZE))  $CLUSTER_SIZE $CLUSTER_SIZE 1 43
 123
 124         # Empty sectors
 125         io_zero readv $(( offset + 1024 * 1024 + $CLUSTER_SIZE * 4 )) $CLUSTER_SIZE $CLUSTER_SIZE 1
 126     done
 127     _check_test_img
 128
 129 done
 130
 131 # success, all done
 132 echo "*** done"
 133 rm -f $seq.full
 134 status=0