#!/usr/bin/env bash # group: rw auto quick # # Resizing images # # Copyright (C) 2010 IBM, Corp. # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. # # creator owner=stefanha@redhat.com seq=`basename $0` echo "QA output created by $seq" status=1 # failure is the default! _cleanup() { _cleanup_test_img } trap "_cleanup; exit \$status" 0 1 2 3 15 # get standard environment, filters and checks . ./common.rc . ./common.filter . ./common.pattern _supported_fmt raw qcow2 qed luks _supported_proto file rbd nfs fuse echo "=== Creating image" echo small_size=$((128 * 1024 * 1024)) big_size=$((384 * 1024 * 1024)) _make_test_img $small_size echo echo "=== Writing whole image" io_pattern write 0 $small_size 0 1 0xc5 _check_test_img echo echo "=== Resizing image" $QEMU_IO "$TEST_IMG" <<EOF | _filter_qemu_io length truncate $big_size length EOF _check_test_img # bdrv_truncate() doesn't zero the new space, so we need to do that explicitly. # We still want to test automatic zeroing for other formats even though # bdrv_truncate() doesn't guarantee it. if [ "$IMGFMT" == "luks" ]; then $QEMU_IO -c "write -z $small_size $((big_size - small_size))" "$TEST_IMG" > /dev/null fi echo echo "=== Verifying image size after reopen" $QEMU_IO -c "length" "$TEST_IMG" echo echo "=== Verifying resized image" io_pattern read 0 $small_size 0 1 0xc5 io_pattern read $small_size $(($big_size - $small_size)) 0 1 0 # success, all done echo "*** done" rm -f $seq.full status=0