linux-kernel - Re: the " 'official' point of view" expressed by kernelnewbies.org regarding reiser4 inclusion

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Date:	Mon, 07 Aug 2006 02:19:09 +0400
From:	Edward Shishkin <edward@...esys.com>
To:	Hans Reiser <reiser@...esys.com>
CC:	Matthias Andree <matthias.andree@....de>, ric@....com,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Adrian Ulrich <reiser4@...nkenlights.ch>,
	"Horst H. von Brand" <vonbrand@....utfsm.cl>,
	bernd-schubert@....de, reiserfs-list@...esys.com,
	jbglaw@...-owl.de, clay.barnes@...il.com, rudy@...ons.demon.nl,
	ipso@...ppymail.ca, lkml@...productions.com, jeff@...zik.org,
	tytso@....edu, linux-kernel@...r.kernel.org
Subject: Re: the " 'official' point of view" expressed by kernelnewbies.org
 regarding reiser4 inclusion

Hans Reiser wrote:
> Edward Shishkin wrote:
> 
> 
>>>
>>>How about we switch to ecc, which would help with bit rot not sector
>>>loss?
>>
>>
>>Interesting aspect.
>>
>>Yes, we can implement ECC as a special crypto transform that inflates
>>data. As I mentioned earlier, it is possible via translation of key
>>offsets with scale factor > 1.
>>
>>Of course, it is better then nothing, but anyway meta-data remains
>>ecc-unprotected, and, hence, robustness is not increased..
>>
>>Edward.
> 
> 
> Would you prefer to do it as a node layout plugin instead, so as to get
> the metadata?
> 

Yes, it looks like a business of node plugin, but AFAIK, you
objected against such checks: currently only bitmap nodes have
a protection (checksum); supporting ecc-signatures is more
space/cpu expensive.

Edward.
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