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