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 $seq" 27 28status=1 # failure is the default! 29 30_cleanup() 31{ 32 _cleanup_test_img 33} 34trap "_cleanup; exit \$status" 0 1 2 3 15 35 36# get standard environment and filters 37. ./common.rc 38. ./common.filter 39 40_supported_fmt raw 41_supported_proto file fuse 42_supported_os Linux 43 44# in kB 45CREATION_SIZE=128 46GROWTH_SIZE=256 47 48echo '=== Testing image growth ===' 49 50for create_mode in off falloc full; do 51 for growth_mode in off falloc full; do 52 echo 53 echo "--- create_mode=$create_mode growth_mode=$growth_mode ---" 54 55 # Our calculation below assumes kilobytes as unit for the actual size. 56 # Disable the extent size hint because it would give us a result in 57 # megabytes. 58 _make_test_img -o "preallocation=$create_mode,extent_size_hint=0" ${CREATION_SIZE}K 59 $QEMU_IMG resize -f "$IMGFMT" --preallocation=$growth_mode "$TEST_IMG" +${GROWTH_SIZE}K 60 61 expected_size=0 62 if [ $create_mode != off ]; then 63 expected_size=$CREATION_SIZE 64 fi 65 if [ $growth_mode != off ]; then 66 expected_size=$((expected_size + $GROWTH_SIZE)) 67 fi 68 69 actual_size=$($QEMU_IMG info -f "$IMGFMT" "$TEST_IMG" | grep 'disk size') 70 actual_size=$(echo "$actual_size" | sed -e 's/^[^0-9]*\([0-9]\+\).*$/\1/') 71 72 # The actual size may exceed the expected size, depending on the file 73 # system. Therefore we just test that the actual size is at least what 74 # we expect. 75 if [ $actual_size -lt $expected_size ]; then 76 echo "ERROR: Image should have at least ${expected_size}K, but has ${actual_size}K" 77 fi 78 done 79done 80 81echo 82echo '=== Testing image shrinking ===' 83 84# None of this should work except for "off", because other modes cannot be used 85# for shrinking 86for growth_mode in falloc full off; do 87 echo 88 echo "--- growth_mode=$growth_mode ---" 89 $QEMU_IMG resize -f "$IMGFMT" --shrink --preallocation=$growth_mode "$TEST_IMG" -${GROWTH_SIZE}K 90done 91 92echo 93echo '=== Testing image growth on 2G empty image ===' 94 95for growth_mode in falloc full; do 96 echo 97 echo "--- growth_mode=$growth_mode ---" 98 99 # Maybe we want to do an lseek() to the end of the file before the 100 # preallocation; if the file has a length of 2 GB, that would 101 # return an integer that overflows to negative when put into a 102 # plain int. We should use the correct type for the result, and 103 # this tests we do. 104 105 _make_test_img -o "extent_size_hint=0" 2G 106 $QEMU_IMG resize -f "$IMGFMT" --preallocation=$growth_mode "$TEST_IMG" +${GROWTH_SIZE}K 107 108 actual_size=$($QEMU_IMG info -f "$IMGFMT" "$TEST_IMG" | grep 'disk size') 109 actual_size=$(echo "$actual_size" | sed -e 's/^[^0-9]*\([0-9]\+\).*$/\1/') 110 111 if [ $actual_size -lt $GROWTH_SIZE ]; then 112 echo "ERROR: Image should have at least ${GROWTH_SIZE}K, but has ${actual_size}K" 113 fi 114done 115 116# success, all done 117echo '*** done' 118rm -f $seq.full 119status=0 120