标题: uclinux中使用ext3 rootfs [打印本页] 作者: nwcow 时间: 2006-07-20 12:16 标题: uclinux中使用ext3 rootfs Comment By: Sajeev Kesavan (sajeev)
Date: 2005-01-31 07:02
Message:
I followed the following instructions and got the ext3 filesystem booting :
For booting EXT3 file system:
1. Do these with EXT2 enabled first.
edit vendors/ADI/BF533/Makefile
change the BLOCKS to 3072
4 makes
mkdir /home/files
cp linux-2.6.x/rootfs.img /home/files/
cd /home/files
mkdir t
mkdir test
mount -o loop rootfs.img t/
mkfs.ext3 /dev/ram0 4096
mount -t ext3 /dev/ram0 ./test
cp -af t/* ./test/
umount ./test
dd if=/dev/ram0 bs=1k count=4096 > ext3.img
2. copy ext3.img obtained from step 1 to linux-2.6.x/rootfs.img. (replace rootfs.img with ext3.img)
3. make menuconfig
disable all file systems
enable ext3 file system
Edit vendors/ADI/BF533/Makefile
Comment all lines under image:
4 makes
4. use the linux image obtained to see ext3 functionality.
ENSURE THE rootfs.img obtained out of ext2 compilation in step2 is less than 4MB.
However , the mkfs.ext3 utility on desktop throws Warning Message " mkfs.ext3:Filesystem larger than apparent file system size " .Therefore it doesn't somehow build coorect filesystem(ext3) of size more than 4 MB .