#!/usr/bin/env bash # group: rw quick # # Test preallocated resize of raw images # # Copyright (C) 2017 Red Hat, Inc. # # 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=mreitz@redhat.com seq=$(basename $0) echo "QA output created by $seq" status=1 # failure is the default! _cleanup() { _cleanup_test_img } trap "_cleanup; exit \$status" 0 1 2 3 15 # get standard environment and filters . ./common.rc . ./common.filter _supported_fmt raw _supported_proto file fuse _supported_os Linux # in kB CREATION_SIZE=128 GROWTH_SIZE=256 echo '=== Testing image growth ===' for create_mode in off falloc full; do for growth_mode in off falloc full; do echo echo "--- create_mode=$create_mode growth_mode=$growth_mode ---" # Our calculation below assumes kilobytes as unit for the actual size. # Disable the extent size hint because it would give us a result in # megabytes. _make_test_img -o "preallocation=$create_mode,extent_size_hint=0" ${CREATION_SIZE}K $QEMU_IMG resize -f "$IMGFMT" --preallocation=$growth_mode "$TEST_IMG" +${GROWTH_SIZE}K expected_size=0 if [ $create_mode != off ]; then expected_size=$CREATION_SIZE fi if [ $growth_mode != off ]; then expected_size=$((expected_size + $GROWTH_SIZE)) fi actual_size=$($QEMU_IMG info -f "$IMGFMT" "$TEST_IMG" | grep 'disk size') actual_size=$(echo "$actual_size" | sed -e 's/^[^0-9]*\([0-9]\+\).*$/\1/') # The actual size may exceed the expected size, depending on the file # system. Therefore we just test that the actual size is at least what # we expect. if [ $actual_size -lt $expected_size ]; then echo "ERROR: Image should have at least ${expected_size}K, but has ${actual_size}K" fi done done echo echo '=== Testing image shrinking ===' # None of this should work except for "off", because other modes cannot be used # for shrinking for growth_mode in falloc full off; do echo echo "--- growth_mode=$growth_mode ---" $QEMU_IMG resize -f "$IMGFMT" --shrink --preallocation=$growth_mode "$TEST_IMG" -${GROWTH_SIZE}K done echo echo '=== Testing image growth on 2G empty image ===' for growth_mode in falloc full; do echo echo "--- growth_mode=$growth_mode ---" # Maybe we want to do an lseek() to the end of the file before the # preallocation; if the file has a length of 2 GB, that would # return an integer that overflows to negative when put into a # plain int. We should use the correct type for the result, and # this tests we do. _make_test_img -o "extent_size_hint=0" 2G $QEMU_IMG resize -f "$IMGFMT" --preallocation=$growth_mode "$TEST_IMG" +${GROWTH_SIZE}K actual_size=$($QEMU_IMG info -f "$IMGFMT" "$TEST_IMG" | grep 'disk size') actual_size=$(echo "$actual_size" | sed -e 's/^[^0-9]*\([0-9]\+\).*$/\1/') if [ $actual_size -lt $GROWTH_SIZE ]; then echo "ERROR: Image should have at least ${GROWTH_SIZE}K, but has ${actual_size}K" fi done # success, all done echo '*** done' rm -f $seq.full status=0