1,安装相关的软件包apt-get install liblzo2-dev
2,获取相关的工具mkfs.ubifs和ubinize这两个工具是制作ubifs文件系统的时候用到，它们是mtd-utils工具包中的内容，mtd-utils工具包你可以从下面的网站下载和编译出来：官方网站：http://www.linux-mtd.infradead.org/index.html资源下载网站：http://git.infradead.org/
3,创建一个create-ubifs.sh脚本，主要是调用mkfs.ubifs和ubinize工具和相关参数来制作ubifs文件系统，内容如下：#!/bin/bash
########################################################### Script to generate ubifs filesystem image. ###########################################################
##### ubinize configuration fileconfig_file=rootfs_ubinize.cfg
##### Function to check result of the commandcheck_result() {if [ $? -ne 0 ]then echo "FAILED"else echo "SUCCESSFUL"fi}
###### Function to check whether an application existscheck_program() {for cmd in "$@"do which ${cmd} > /dev/null 2>&1 if [ $? -ne 0 ] then echo echo "Cannot find command /"${cmd}/"" echo exit 1 fidone}
if [ $# -ne 5 ]then echo echo 'Usage: create-ubifs.sh [page_size_in_bytes] [pages_per_block] [partition_size_in_bytes] [blocks_per_device] [path_to_rootfs]' echo exitfi
page_size_in_bytes=$1echo "Page size [$page_size_in_bytes]bytes."pages_per_block=$2echo "Pages per block [$pages_per_block]"partition_size_in_bytes=$3echo "File-system partition size [$partition_size_in_bytes]bytes."blocks_per_device=$4echo "Blocks per device [$blocks_per_device]"path_to_rootfs=$5
# wear_level_reserved_blocks is 1% of total blcoks per devicewear_level_reserved_blocks=`expr $blocks_per_device / 100`echo "Reserved blocks for wear level [$wear_level_reserved_blocks]"
#logical_erase_block_size is physical erase block size minus 2 pages for UBIlogical_pages_per_block=`expr $pages_per_block - 2`logical_erase_block_size=`expr $page_size_in_bytes /* $logical_pages_per_block`echo "Logical erase block size [$logical_erase_block_size]bytes."
#Block size = page_size * pages_per_blockblock_size=`expr $page_size_in_bytes /* $pages_per_block`echo "Block size [$block_size]bytes."
#physical blocks on a partition = partition size / block sizepartition_physical_blocks=`expr $partition_size_in_bytes / $block_size`echo "Physical blocks in a partition [$partition_physical_blocks]"
#Logical blocks on a partition = physical blocks on a partitiion - reserved for wear levelpatition_logical_blocks=`expr $partition_physical_blocks - $wear_level_reserved_blocks`echo "Logical blocks in a partition [$patition_logical_blocks]"
#File-system volume = Logical blocks in a partition * Logical erase block sizefs_vol_size=`expr $patition_logical_blocks /* $logical_erase_block_size`echo "File-system volume [$fs_vol_size]bytes."
echoecho "Generating configuration file..."echo "[rootfs-volume]" > $config_fileecho "mode=ubi" >> $config_fileecho "image=rootfs_ubifs.img" >> $config_fileecho "vol_id=0" >> $config_fileecho "vol_size=$fs_vol_size" >> $config_fileecho "vol_type=dynamic" >> $config_fileecho "vol_name=system" >> $config_fileecho
# Note: Check necessary program for installation#echo -n "Checking necessary program for installation......"#check_program mkfs.ubifs ubinize#echo "Done"
#Generate ubifs imageecho -n "Generating ubifs..."./mkfs.ubifs -x lzo -m $page_size_in_bytes -e $logical_erase_block_size -c $patition_logical_blocks -o rootfs_ubifs.img -d $path_to_rootfscheck_resultecho -n "Generating ubi image out of the ubifs..."./ubinize -o ubi.img -m $page_size_in_bytes -p $block_size -s $page_size_in_bytes $config_file -vcheck_result
rm -f rootfs_ubifs.imgrm -f $config_file
(4)将mkfs.ubifs和ubinize以及create-ubifs.sh放置在同一目录下，然后调用create-ubifs.sh即可创建ubifs文件系统，create-ubifs.sh用法如下：create-ubifs.sh page_size_in_bytes(页大小) pages_per_block(每个扇区的页数量) partition_size_in_bytes(分区大小) blocks_per_device(扇区数量) path_to_rootfs(文件系统路径)举例如下：./create-ubifs.sh 2048 64 83886080 4096 ./rootfs上面命令的意思是调用create-ubifs.sh将当前目录下的rootfs文件夹的内容制作成ubifs文件系统，nand flash的页大小为2k,每个扇区有64页，总共有4096个扇区，要制作的文件系统的大小为83886080字节。
本文来自博客，转载请标明出处：http://blog.csdn.net/jiajie961/archive/2010/11/08/5994713.aspx
