1#!/bin/bash 2# 3# Resizing images 4# 5# Copyright (C) 2010 IBM, Corp. 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=stefanha@linux.vnet.ibm.com 23 24seq=`basename $0` 25echo "QA output created by $seq" 26 27here=`pwd` 28status=1 # failure is the default! 29 30_cleanup() 31{ 32 _cleanup_test_img 33} 34trap "_cleanup; exit \$status" 0 1 2 3 15 35 36# get standard environment, filters and checks 37. ./common.rc 38. ./common.filter 39. ./common.pattern 40 41_supported_fmt raw qcow2 qed luks 42_supported_proto file sheepdog rbd nfs 43_supported_os Linux 44 45echo "=== Creating image" 46echo 47small_size=$((128 * 1024 * 1024)) 48big_size=$((384 * 1024 * 1024)) 49_make_test_img $small_size 50 51echo 52echo "=== Writing whole image" 53io_pattern write 0 $small_size 0 1 0xc5 54_check_test_img 55 56echo 57echo "=== Resizing image" 58$QEMU_IO "$TEST_IMG" <<EOF | _filter_qemu_io 59length 60truncate $big_size 61length 62EOF 63_check_test_img 64 65# bdrv_truncate() doesn't zero the new space, so we need to do that explicitly. 66# We still want to test automatic zeroing for other formats even though 67# bdrv_truncate() doesn't guarantee it. 68if [ "$IMGFMT" == "luks" ]; then 69 $QEMU_IO -c "write -z $small_size $((big_size - small_size))" "$TEST_IMG" > /dev/null 70fi 71 72echo 73echo "=== Verifying image size after reopen" 74$QEMU_IO -c "length" "$TEST_IMG" 75 76echo 77echo "=== Verifying resized image" 78io_pattern read 0 $small_size 0 1 0xc5 79io_pattern read $small_size $(($big_size - $small_size)) 0 1 0 80 81# success, all done 82echo "*** done" 83rm -f $seq.full 84status=0 85