175 (3264B)
1#!/usr/bin/env bash 2# group: quick 3# 4# Test creating raw image preallocation mode 5# 6# Copyright (C) 2017 Nir Soffer <nirsof@gmail.com> 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=nirsof@gmail.com 24 25seq=`basename $0` 26echo "QA output created by $seq" 27 28status=1 # failure is the default! 29 30_cleanup() 31{ 32 _cleanup_test_img 33 rm -f "$TEST_DIR/empty" 34} 35trap "_cleanup; exit \$status" 0 1 2 3 15 36 37# Some file systems sometimes allocate extra blocks independently of 38# the file size. This function hides the resulting difference in the 39# stat -c '%b' output. 40# Parameter 1: Number of blocks an empty file occupies 41# Parameter 2: Minimal number of blocks in an image 42# Parameter 3: Image size in bytes 43_filter_blocks() 44{ 45 extra_blocks=$1 46 min_blocks=$2 47 img_size=$3 48 49 sed -e "s/blocks=$min_blocks\\(\$\\|[^0-9]\\)/min allocation/" \ 50 -e "s/blocks=$((extra_blocks + img_size / 512))\\(\$\\|[^0-9]\\)/max allocation/" 51} 52 53# Resize image using block_resize. 54# Parameter 1: image path 55# Parameter 2: new size 56_block_resize() 57{ 58 local path=$1 59 local size=$2 60 61 $QEMU -qmp stdio -nographic -nodefaults \ 62 -blockdev file,node-name=file,filename=$path,cache.direct=on \ 63 <<EOF 64{'execute': 'qmp_capabilities'} 65{'execute': 'block_resize', 'arguments': {'node-name': 'file', 'size': $size}} 66{'execute': 'quit'} 67EOF 68} 69 70# get standard environment, filters and checks 71. ./common.rc 72. ./common.filter 73 74_supported_fmt raw 75_supported_proto file fuse 76_supported_os Linux 77 78_default_cache_mode none 79_supported_cache_modes none directsync 80 81size=$((1 * 1024 * 1024)) 82 83touch "$TEST_DIR/empty" 84extra_blocks=$(stat -c '%b' "$TEST_DIR/empty") 85 86# We always write the first byte; check how many blocks this filesystem 87# allocates to match empty image alloation. 88printf "\0" > "$TEST_DIR/empty" 89min_blocks=$(stat -c '%b' "$TEST_DIR/empty") 90 91echo 92echo "== creating image with default preallocation ==" 93_make_test_img -o extent_size_hint=0 $size 94stat -c "size=%s, blocks=%b" $TEST_IMG | _filter_blocks $extra_blocks $min_blocks $size 95 96for mode in off full falloc; do 97 echo 98 echo "== creating image with preallocation $mode ==" 99 _make_test_img -o preallocation=$mode,extent_size_hint=0 $size 100 stat -c "size=%s, blocks=%b" $TEST_IMG | _filter_blocks $extra_blocks $min_blocks $size 101done 102 103for new_size in 4096 1048576; do 104 echo 105 echo "== resize empty image with block_resize ==" 106 _make_test_img -o extent_size_hint=0 0 107 _block_resize $TEST_IMG $new_size >/dev/null 108 stat -c "size=%s, blocks=%b" $TEST_IMG | _filter_blocks $extra_blocks $min_blocks $new_size 109done 110 111# success, all done 112echo "*** done" 113rm -f $seq.full 114status=0