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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