1#!/usr/bin/env bash 2# 3# Test preallocated resize of raw images 4# 5# Copyright (C) 2017 Red Hat, Inc. 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=mreitz@redhat.com 23 24seq=$(basename $0) 25echo "QA output created by $seq" 26 27status=1 # failure is the default! 28 29_cleanup() 30{ 31 _cleanup_test_img 32} 33trap "_cleanup; exit \$status" 0 1 2 3 15 34 35# get standard environment and filters 36. ./common.rc 37. ./common.filter 38 39_supported_fmt raw 40_supported_proto file fuse 41_supported_os Linux 42 43# in kB 44CREATION_SIZE=128 45GROWTH_SIZE=256 46 47echo '=== Testing image growth ===' 48 49for create_mode in off falloc full; do 50 for growth_mode in off falloc full; do 51 echo 52 echo "--- create_mode=$create_mode growth_mode=$growth_mode ---" 53 54 # Our calculation below assumes kilobytes as unit for the actual size. 55 # Disable the extent size hint because it would give us a result in 56 # megabytes. 57 _make_test_img -o "preallocation=$create_mode,extent_size_hint=0" ${CREATION_SIZE}K 58 $QEMU_IMG resize -f "$IMGFMT" --preallocation=$growth_mode "$TEST_IMG" +${GROWTH_SIZE}K 59 60 expected_size=0 61 if [ $create_mode != off ]; then 62 expected_size=$CREATION_SIZE 63 fi 64 if [ $growth_mode != off ]; then 65 expected_size=$((expected_size + $GROWTH_SIZE)) 66 fi 67 68 actual_size=$($QEMU_IMG info -f "$IMGFMT" "$TEST_IMG" | grep 'disk size') 69 actual_size=$(echo "$actual_size" | sed -e 's/^[^0-9]*\([0-9]\+\).*$/\1/') 70 71 # The actual size may exceed the expected size, depending on the file 72 # system. Therefore we just test that the actual size is at least what 73 # we expect. 74 if [ $actual_size -lt $expected_size ]; then 75 echo "ERROR: Image should have at least ${expected_size}K, but has ${actual_size}K" 76 fi 77 done 78done 79 80echo 81echo '=== Testing image shrinking ===' 82 83# None of this should work except for "off", because other modes cannot be used 84# for shrinking 85for growth_mode in falloc full off; do 86 echo 87 echo "--- growth_mode=$growth_mode ---" 88 $QEMU_IMG resize -f "$IMGFMT" --shrink --preallocation=$growth_mode "$TEST_IMG" -${GROWTH_SIZE}K 89done 90 91echo 92echo '=== Testing image growth on 2G empty image ===' 93 94for growth_mode in falloc full; do 95 echo 96 echo "--- growth_mode=$growth_mode ---" 97 98 # Maybe we want to do an lseek() to the end of the file before the 99 # preallocation; if the file has a length of 2 GB, that would 100 # return an integer that overflows to negative when put into a 101 # plain int. We should use the correct type for the result, and 102 # this tests we do. 103 104 _make_test_img -o "extent_size_hint=0" 2G 105 $QEMU_IMG resize -f "$IMGFMT" --preallocation=$growth_mode "$TEST_IMG" +${GROWTH_SIZE}K 106 107 actual_size=$($QEMU_IMG info -f "$IMGFMT" "$TEST_IMG" | grep 'disk size') 108 actual_size=$(echo "$actual_size" | sed -e 's/^[^0-9]*\([0-9]\+\).*$/\1/') 109 110 if [ $actual_size -lt $GROWTH_SIZE ]; then 111 echo "ERROR: Image should have at least ${GROWTH_SIZE}K, but has ${actual_size}K" 112 fi 113done 114 115# success, all done 116echo '*** done' 117rm -f $seq.full 118status=0 119