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