Re: Bad blocks in a FAT32 partition of MLC nand flash

[Artem Bityutskiy <dedekind1@gmail.com>]

On Thu, 2010-07-22 at 21:37 +0800, rednoah wrote:
> Hi:
>    I'm using samsung s3c2416 board with a 8G MLC nand flash.A partition
> larger than 7G was reserved for cutomer.They use PC to store files in this
> partition.Since Windows XP was their mainly used OS,there is no other
> file-system choice except FAT32.But FAT32 can't cope with bad blocks in
> nand flash,which may be an easy job for yaffs.So these errors such as
> "path too deep","crc error" are common when copying files to the MLC
> nand flash partition.I refered to the mtd homepage.It seems that there is 2
> solutions:
> 
> 1.use a flash translation layer to deal with wear leveling and bad block.But
> it seems that there is no reliable open source FTL for nand flash.There is no
> FTL for MLC nand flash in main-line kernel.
> 
> 2.use ubi layer,but there is no block device driver on ubi for building FAT32
> or ext2.There is a ubi block device driver.But it doesn't belong main-line mtd
> driver.

There is not public upstream solution for your problem. But you can
develop an FTL layer on top of UBI.

-- 
Best Regards,
Artem Bityutskiy (Артём Битюцкий)