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 $seq" 28 29 status=1 # failure is the default! 30 31 _cleanup() 32 { 33 _cleanup_test_img 34 _rm_test_img "$TEST_IMG.base" 35 _rm_test_img "$TEST_IMG.orig" 36 } 37 trap "_cleanup; exit \$status" 0 1 2 3 15 38 39 # get standard environment, filters and checks 40 . ./common.rc 41 . ./common.filter 42 . ./common.pattern 43 44 # Any format supporting backing files 45 _supported_fmt qcow qcow2 vmdk qed 46 _supported_proto file 47 _supported_os Linux 48 _unsupported_imgopts "subformat=monolithicFlat" \ 49 "subformat=twoGbMaxExtentFlat" \ 50 "subformat=twoGbMaxExtentSparse" \ 51 "subformat=streamOptimized" 52 53 TEST_OFFSETS="0 4294967296" 54 CLUSTER_SIZE=65536 55 56 TEST_IMG_SAVE="$TEST_IMG" 57 TEST_IMG="$TEST_IMG.base" 58 59 _make_test_img 6G 60 61 echo "Filling base image" 62 echo 63 64 for offset in $TEST_OFFSETS; do 65 # Some clusters with alternating backing file/image file reads 66 io_pattern writev $(( offset )) 512 1024 64 42 67 68 # Complete backing clusters 69 io_pattern writev $(( offset + 1024 * 1024)) $CLUSTER_SIZE $CLUSTER_SIZE 1 42 70 done 71 _check_test_img 72 73 echo "Creating test image with backing file" 74 echo 75 76 TEST_IMG="$TEST_IMG_SAVE.orig" 77 _make_test_img -b "$TEST_IMG_SAVE.base" -F $IMGFMT 6G 78 79 echo "Filling test image" 80 echo 81 82 for offset in $TEST_OFFSETS; do 83 # Some clusters with alternating backing file/image file reads 84 io_pattern writev $(( offset + 512 )) 512 1024 64 43 85 86 # Complete test image clusters 87 io_pattern writev $(( offset + 1024 * 1024 + $CLUSTER_SIZE)) $CLUSTER_SIZE $CLUSTER_SIZE 1 43 88 done 89 _check_test_img 90 91 TEST_IMG="$TEST_IMG_SAVE" 92 93 # Test the conversion twice: One test with the old-style -B option and another 94 # one with -o backing_file 95 96 for backing_option in "-B " "-o backing_file="; do 97 98 echo 99 echo Testing conversion with $backing_option"$TEST_IMG.base" | _filter_testdir | _filter_imgfmt 100 echo 101 $QEMU_IMG convert -f $IMGFMT -O $IMGFMT $backing_option"$TEST_IMG.base" \ 102 -o backing_fmt=$IMGFMT "$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=0 134