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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: Tue, 18 Aug 2009 21:19:33 -0000
attempting to regroup the yaffs discussion in the increasingly OT "where's the 
source" thread.


This sounds close to what I am seeing on 2.4, unable to delete files to recover 
space on BB-locked yaffs root fs.

http://lists.aleph1.co.uk/lurker/message/20090721.151616.f5028de7.en.html


--- In  Eddie Dawydiuk <> wrote:
> This is expected if the board is not shutdown properly. 
I relayed this slow mount issue to Charles Manning, he did not find it normal.

> If power was lost during an erase or write operation,
the sector being written / erased will be marked bad(assuming the operation did
> not complete) the next time the Yaffs filesystem is mounted. 

Hang on there, I posted numbers and we're not taking about the odd block 
getting marked. I have 67% of a 128MB flash out to lunch here. That is about 
48000 blocks. While it is likely this board has seen dozens or irregular shut 
downs it has not tens of thousands!

> 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.







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