Re: [Yaffs] The nandflash chip seems to be making badblocks …

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Author: Vitaly Wool
Date:  
To: yi zhang
CC: yaffs
Subject: Re: [Yaffs] The nandflash chip seems to be making badblocks easily, what can I do?
Yi,

On 3/9/07, yi zhang <> wrote:
> My system was based on PXA270,consists of
> linux2.6.9 + intel patches + cramfs + yaffs,
> nandflash was samsung K9F1208, 64M. and this chip was mounted as 3 yaffs
> partitions, After a period of usage of this system, there may appear a lot
> of badblocks,we can see the badblock messages in the kernel booting
> messages, and sometime one of the 3 partitions could be damaged entirely.
> the partitons which marked as badblocks cannot be erased by the 'mkyaffs'
> tool.when this occurs, the worst way is that the nandflash chip could be
> changed to another nandflash chip.


can you please try testing on a bare (i.e. freshly-erased) partition?
So, not to bring possible mkyaffs problems in -- to locate the kernel
problems first?

I'd expect that the problem is yaffs2 rewrites bad block marker in
OOB. Is this chip a 512b page or 2k page?

Vitaly