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 24owner=kwolf@redhat.com 25 26seq=`basename $0` 27echo "QA output created by $seq" 28 29status=1 # failure is the default! 30 31_cleanup() 32{ 33 _cleanup_test_img 34 rm -f "$TEST_IMG.base" 35 rm -f "$TEST_IMG.orig" 36} 37trap "_cleanup; exit \$status" 0 1 2 3 15 38 39# get standard environment, filters and checks 40. ./common.rc 41. ./common.filter 42. ./common.pattern 43 44# Any format supporting backing files 45_supported_fmt qcow qcow2 vmdk qed 46_supported_proto file 47_supported_os Linux 48_unsupported_imgopts "subformat=monolithicFlat" \ 49 "subformat=twoGbMaxExtentFlat" \ 50 "subformat=twoGbMaxExtentSparse" 51 52TEST_OFFSETS="0 4294967296" 53CLUSTER_SIZE=65536 54 55TEST_IMG_SAVE="$TEST_IMG" 56TEST_IMG="$TEST_IMG.base" 57 58_make_test_img 6G 59 60echo "Filling base image" 61echo 62 63for 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 $CLUSTER_SIZE 1 42 69done 70_check_test_img 71 72echo "Creating test image with backing file" 73echo 74 75TEST_IMG="$TEST_IMG_SAVE.orig" 76_make_test_img -b "$TEST_IMG_SAVE.base" 6G 77 78echo "Filling test image" 79echo 80 81for 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 $CLUSTER_SIZE 1 43 87done 88_check_test_img 89 90TEST_IMG="$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 95for 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 126done 127 128# success, all done 129echo "*** done" 130rm -f $seq.full 131status=0 132