1#!/bin/bash 2# 3# Test that qemu-img convert -S 0 fully allocates the target image 4# 5# Copyright (C) 2016 Red Hat, Inc. 6# 7# This program is free software; you can redistribute it and/or modify 8# it under the terms of the GNU General Public License as published by 9# the Free Software Foundation; either version 2 of the License, or 10# (at your option) any later version. 11# 12# This program is distributed in the hope that it will be useful, 13# but WITHOUT ANY WARRANTY; without even the implied warranty of 14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15# GNU General Public License for more details. 16# 17# You should have received a copy of the GNU General Public License 18# along with this program. If not, see <http://www.gnu.org/licenses/>. 19# 20 21# creator 22owner=mreitz@redhat.com 23 24seq="$(basename $0)" 25echo "QA output created by $seq" 26 27here="$PWD" 28tmp=/tmp/$$ 29status=1 # failure is the default! 30 31_cleanup() 32{ 33 _cleanup_test_img 34} 35trap "_cleanup; exit \$status" 0 1 2 3 15 36 37# get standard environment, filters and checks 38. ./common.rc 39. ./common.filter 40 41_supported_fmt generic 42_supported_proto file 43_supported_os Linux 44 45 46on_disk_size() 47{ 48 du "$@" | sed -e 's/\t\+.*//' 49} 50 51 52img_size=1048576 53 54 55echo 56echo '=== Comparing empty image against sparse conversion ===' 57echo 58 59_make_test_img $img_size 60 61empty_size=$(on_disk_size "$TEST_IMG") 62 63 64$QEMU_IMG_PROG convert -O "$IMGFMT" -S 512 \ 65 "json:{ 'driver': 'null-co', 'size': $img_size, 'read-zeroes': true }" \ 66 "$TEST_IMG" 67 68sparse_convert_size=$(on_disk_size "$TEST_IMG") 69 70 71if [ "$empty_size" -eq "$sparse_convert_size" ]; then 72 echo 'Equal image size' 73else 74 echo 'Different image size' 75fi 76 77 78echo 79echo '=== Comparing full image against non-sparse conversion ===' 80echo 81 82_make_test_img $img_size 83$QEMU_IO -c "write 0 $img_size" "$TEST_IMG" | _filter_qemu_io 84 85full_size=$(on_disk_size "$TEST_IMG") 86 87 88$QEMU_IMG convert -O "$IMGFMT" -S 0 \ 89 "json:{ 'driver': 'null-co', 'size': $img_size, 'read-zeroes': true }" \ 90 "$TEST_IMG" 91 92non_sparse_convert_size=$(on_disk_size "$TEST_IMG") 93 94 95if [ "$full_size" -eq "$non_sparse_convert_size" ]; then 96 echo 'Equal image size' 97else 98 echo 'Different image size' 99fi 100 101 102# success, all done 103echo "*** done" 104rm -f $seq.full 105status=0 106