tests/qemu-iotests/019

   1 #!/usr/bin/env 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 $seq"
  28
  29 status=1        # failure is the default!
  30
  31 _cleanup()
  32 {
  33         _cleanup_test_img
  34     rm -f "$TEST_IMG.base"
  35     rm -f "$TEST_IMG.orig"
  36 }
  37 trap "_cleanup; exit \$status" 0 1 2 3 15
  38
  39 # get standard environment, filters and checks
  40 . ./common.rc
  41 . ./common.filter
  42 . ./common.pattern
  43
  44 # Any format supporting backing files
  45 _supported_fmt qcow qcow2 vmdk qed
  46 _supported_proto file
  47 _supported_os Linux
  48 _unsupported_imgopts "subformat=monolithicFlat" \
  49                      "subformat=twoGbMaxExtentFlat" \
  50                      "subformat=twoGbMaxExtentSparse"
  51
  52 TEST_OFFSETS="0 4294967296"
  53 CLUSTER_SIZE=65536
  54
  55 TEST_IMG_SAVE="$TEST_IMG"
  56 TEST_IMG="$TEST_IMG.base"
  57
  58 _make_test_img 6G
  59
  60 echo "Filling base image"
  61 echo
  62
  63 for offset in $TEST_OFFSETS; do
  64     # Some clusters with alternating backing file/image file reads
  65     io_pattern writev $(( offset )) 512 1024 64 42
  66
  67     # Complete backing clusters
  68     io_pattern writev $(( offset  + 1024 * 1024))  $CLUSTER_SIZE $CLUSTER_SIZE 1 42
  69 done
  70 _check_test_img
  71
  72 echo "Creating test image with backing file"
  73 echo
  74
  75 TEST_IMG="$TEST_IMG_SAVE.orig"
  76 _make_test_img -b "$TEST_IMG_SAVE.base" 6G
  77
  78 echo "Filling test image"
  79 echo
  80
  81 for offset in $TEST_OFFSETS; do
  82     # Some clusters with alternating backing file/image file reads
  83     io_pattern writev $(( offset + 512 )) 512 1024 64 43
  84
  85     # Complete test image clusters
  86     io_pattern writev $(( offset + 1024 * 1024 + $CLUSTER_SIZE))  $CLUSTER_SIZE $CLUSTER_SIZE 1 43
  87 done
  88 _check_test_img
  89
  90 TEST_IMG="$TEST_IMG_SAVE"
  91
  92 # Test the conversion twice: One test with the old-style -B option and another
  93 # one with -o backing_file
  94
  95 for backing_option in "-B " "-o backing_file="; do
  96
  97     echo
  98     echo Testing conversion with $backing_option"$TEST_IMG.base" | _filter_testdir | _filter_imgfmt
  99     echo
 100     $QEMU_IMG convert -f $IMGFMT -O $IMGFMT $backing_option"$TEST_IMG.base" "$TEST_IMG.orig" "$TEST_IMG"
 101
 102     echo "Checking if backing clusters are allocated when they shouldn't"
 103     echo
 104     for offset in $TEST_OFFSETS; do
 105         # Complete backing clusters
 106         is_allocated $(( offset  + 1024 * 1024))  $CLUSTER_SIZE $CLUSTER_SIZE 1
 107     done
 108
 109     echo "Reading"
 110     echo
 111
 112     for offset in $TEST_OFFSETS; do
 113         # Some clusters with alternating backing file/image file reads
 114         io_pattern readv $(( offset )) 512 1024 64 42
 115         io_pattern readv $(( offset + 512 )) 512 1024 64 43
 116
 117         # Complete test image clusters
 118         io_pattern readv $(( offset  + 1024 * 1024))  $CLUSTER_SIZE $CLUSTER_SIZE 1 42
 119         io_pattern readv $(( offset + 1024 * 1024 + $CLUSTER_SIZE))  $CLUSTER_SIZE $CLUSTER_SIZE 1 43
 120
 121         # Empty sectors
 122         io_zero readv $(( offset + 1024 * 1024 + $CLUSTER_SIZE * 4 )) $CLUSTER_SIZE $CLUSTER_SIZE 1
 123     done
 124     _check_test_img
 125
 126 done
 127
 128 # success, all done
 129 echo "*** done"
 130 rm -f $seq.full
 131 status=0