Re: [Ltib] JFFS2 crc errors

[Stuart Hughes]

Hi Chris,

You may or may not have a problem, it's hard to say.

You can get this sort of problem if you don't:

* Don't completely erase the Flash partition before copying a new one

* If your copy doesn't work well.  I found flashcp (on the target) to
work most reliably, however that was a while ago and my memory is vague

* The endian is different on the host/target and the appropriate flag
wasn't set (LTIB should handle this correctly though).

There are other factors I can't recall maybe others can reply with hints.

Regards, Stuart


Chris Westervelt wrote:
> All,
> 
>  
> 
> I have started the phase of our project where we are weaning off NFS and
> using JFFS2.  Now my understanding is the flash should work just like a
> normal drive but I am seeing errors about failed CRCs that I don’t
> understand.  Is this normal or do we have a real problem here?  Also, if
> it is normal, is there a way to suppress these messages and or automatic
> checks.  The following is what I see.
> 
>  
> 
> address@hidden /]# JFFS2 notice: (309) check_node_data: wrong data CRC in
> data node at 0x01dd4000: read 0x971bfcf, calculated 0xe401df4b.
> 
> JFFS2 notice: (309) check_node_data: wrong data CRC in data node at
> 0x01dd59b0: read 0x7299d564, calculated 0x4a339945.
> 
>  
> 
> *Chris Westervelt*
> 
> *Senior Product Development Engineer*
> 
> *Infrasafe, Inc.
> 12612 Challenger Pkwy
> Suite 300
> Orlando, FL
> 32826*
> 
> *http://www.infrasafe.com <http://www.infrasafe.com/>
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> 
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