From mboxrd@z Thu Jan  1 00:00:00 1970
From: Piergiorgio Sartor <piergiorgio.sartor@nexgo.de>
Subject: Re: Triple parity and beyond
Date: Sat, 23 Nov 2013 23:10:24 +0100
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To: Andrea Mazzoleni <amadvance@gmail.com>
Cc: Piergiorgio Sartor <piergiorgio.sartor@nexgo.de>, Linux RAID Mailing List <linux-raid@vger.kernel.org>, Btrfs BTRFS <linux-btrfs@vger.kernel.org>, "H. Peter Anvin" <hpa@zytor.com>, David Brown <david.brown@hesbynett.no>, David Smith <creamyfish@gmail.com>
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Hi Andrea,

On Sat, Nov 23, 2013 at 08:55:08AM +0100, Andrea Mazzoleni wrote:
> Hi Piergiorgio,
> 
> > How about par2? How does this work?
> I checked the matrix they use, and sometimes it contains some singular
> square submatrix.
> It seems that in GF(2^16) these cases are just less common. Maybe they
> were just unnoticed.
> 
> Anyway, this seems to be an already known problem for PAR2, with an
> hypothetical PAR3 fixing it:
> 
> http://sourceforge.net/p/parchive/discussion/96282/thread/d3c6597b/

you did a pretty damn good research work!

Maybe you should consider to contact them too.
I'm not sure if your approach can be extended
to GF(2^16), I guess yes, in that case they
might be interested too.

bye,

-- 

piergiorgio