1#!/usr/bin/env bash 2# group: rw quick 3# 4# Test preallocated resize of raw images 5# 6# Copyright (C) 2017 Red Hat, Inc. 7# 8# This program is free software; you can redistribute it and/or modify 9# it under the terms of the GNU General Public License as published by 10# the Free Software Foundation; either version 2 of the License, or 11# (at your option) any later version. 12# 13# This program is distributed in the hope that it will be useful, 14# but WITHOUT ANY WARRANTY; without even the implied warranty of 15# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16# GNU General Public License for more details. 17# 18# You should have received a copy of the GNU General Public License 19# along with this program. If not, see <http://www.gnu.org/licenses/>. 20# 21 22# creator 23owner=hreitz@redhat.com 24 25seq=$(basename $0) 26echo "QA output created by $seq" 27 28status=1 # failure is the default! 29 30_cleanup() 31{ 32 _cleanup_test_img 33} 34trap "_cleanup; exit \$status" 0 1 2 3 15 35 36# get standard environment and filters 37. ./common.rc 38. ./common.filter 39 40_supported_fmt raw 41_supported_proto file fuse 42_supported_os Linux 43_require_disk_usage 44 45# in kB 46CREATION_SIZE=128 47GROWTH_SIZE=256 48 49echo '=== Testing image growth ===' 50 51for create_mode in off falloc full; do 52 for growth_mode in off falloc full; do 53 echo 54 echo "--- create_mode=$create_mode growth_mode=$growth_mode ---" 55 56 # Our calculation below assumes kilobytes as unit for the actual size. 57 # Disable the extent size hint because it would give us a result in 58 # megabytes. 59 _make_test_img -o "preallocation=$create_mode,extent_size_hint=0" ${CREATION_SIZE}K 60 $QEMU_IMG resize -f "$IMGFMT" --preallocation=$growth_mode "$TEST_IMG" +${GROWTH_SIZE}K 61 62 expected_size=0 63 if [ $create_mode != off ]; then 64 expected_size=$CREATION_SIZE 65 fi 66 if [ $growth_mode != off ]; then 67 expected_size=$((expected_size + $GROWTH_SIZE)) 68 fi 69 70 actual_size=$($QEMU_IMG info -f "$IMGFMT" "$TEST_IMG" | grep 'disk size' | head -n 1) 71 actual_size=$(echo "$actual_size" | sed -e 's/^[^0-9]*\([0-9]\+\).*$/\1/') 72 73 # The actual size may exceed the expected size, depending on the file 74 # system. Therefore we just test that the actual size is at least what 75 # we expect. 76 if [ $actual_size -lt $expected_size ]; then 77 echo "ERROR: Image should have at least ${expected_size}K, but has ${actual_size}K" 78 fi 79 done 80done 81 82echo 83echo '=== Testing image shrinking ===' 84 85# None of this should work except for "off", because other modes cannot be used 86# for shrinking 87for growth_mode in falloc full off; do 88 echo 89 echo "--- growth_mode=$growth_mode ---" 90 $QEMU_IMG resize -f "$IMGFMT" --shrink --preallocation=$growth_mode "$TEST_IMG" -${GROWTH_SIZE}K 91done 92 93echo 94echo '=== Testing image growth on 2G empty image ===' 95 96for growth_mode in falloc full; do 97 echo 98 echo "--- growth_mode=$growth_mode ---" 99 100 # Maybe we want to do an lseek() to the end of the file before the 101 # preallocation; if the file has a length of 2 GB, that would 102 # return an integer that overflows to negative when put into a 103 # plain int. We should use the correct type for the result, and 104 # this tests we do. 105 106 _make_test_img -o "extent_size_hint=0" 2G 107 $QEMU_IMG resize -f "$IMGFMT" --preallocation=$growth_mode "$TEST_IMG" +${GROWTH_SIZE}K 108 109 actual_size=$($QEMU_IMG info -f "$IMGFMT" "$TEST_IMG" | grep 'disk size' | head -n 1) 110 actual_size=$(echo "$actual_size" | sed -e 's/^[^0-9]*\([0-9]\+\).*$/\1/') 111 112 if [ $actual_size -lt $GROWTH_SIZE ]; then 113 echo "ERROR: Image should have at least ${GROWTH_SIZE}K, but has ${actual_size}K" 114 fi 115done 116 117# success, all done 118echo '*** done' 119rm -f $seq.full 120status=0 121