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[ts-7000] Re: yaffs tragedy: no more eraased blocks

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Subject: [ts-7000] Re: yaffs tragedy: no more eraased blocks
From: "j.chitte" <>
Date: Wed, 19 Aug 2009 06:45:03 -0000
--- In  Eddie Dawydiuk <> wrote:
>
> Hello,
> 
> > 
> >> Please keep in mind ts11 is the current
> > shipping kernel, we have not released a ts12 kernel. 
> > 
> > Apologies, it is indeed the 2.4.26-ts11 kernel , IIRC it was shipped with 
> > ts10 and we updated it to ts11.
> > 
> > I recent weeks I have been booting a 2.6 kernel via nfs for testing. but 
> > without using or mounting the MTD fs. Root fs is also nfs.
> > 
> > Failure of this board has added urgency to getting a more reliable fs and 
> > recent kernel to work. However this post-dates the total flash failure, it 
> > is NOT the cause.
> > 
> > This situation has arisen solely using stock TS kernels.
> 
> We are interested to look into this further. Could you provide more 
> information 
> demonstrating how to reproduce this problem on our stock ts11 kernel?
> 
> -- 
> Best Regards,
> ________________________________________________________________
>   Eddie Dawydiuk, Technologic Systems | voice:  (480) 837-5200
>   16525 East Laser Drive              | fax:    (480) 837-5300
>   Fountain Hills, AZ 85268            | web: www.embeddedARM.com
>

Hi Eddie,

I'm not sure what you want me to provide. The board will still boot but I only 
have console and it keeps spewing "yaffs tragedy" to that.

Other services (ssh ftp) as well as our software fail , presumable because they 
need to write or change a file somehere.

I can boot it nfs to either ts11 or 2.6 

Since I don't really understand what conditions produce the bad block markage I 
can only guess like you. I can't provide do steps 1,2,3 "happens every time" 
bug report. Sorry.

I've given some background info on the usage the board has has and I'm willing 
to post the output of any specifics you may want to request.

Last week, I wrote to Charles Manning and two other aleph1 contacts I'd written 
to about the slow mount, I have not had any replies as yet. Maybe they are shut 
down right now.

I'm a little hesitant to use ignoreBB until I have a strategy for detecting the 
truly bad blocks. This fault itself will surely have produced some burn out as 
fewer blocks were available. Some process needs to be run to prevent arbitrary 
file errors occuring due to marking real bad blocks as good.

Please ask any questions about the history of the board or any command line 
output you'd like see to pin this down.

best regards.



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