From: Piergiorgio Sartor <piergiorgio.sartor@nexgo.de>
To: David Brown <david@westcontrol.com>
Cc: linux-raid@vger.kernel.org
Subject: Re: Triple-parity raid6
Date: Sat, 11 Jun 2011 12:13:12 +0200 [thread overview]
Message-ID: <20110611101312.GA3528@lazy.lzy> (raw)
In-Reply-To: <ist9n7$khq$1@dough.gmane.org>
[snip]
> Of course, all this assume that my maths is correct !
I would suggest to check out the Reed-Solomon thing
in the more friendly form of Vandermonde matrix.
It will be completely clear how to generate k parity
set with n data set (disk), so that n+k < 258 for the
GF(256) space.
It will also be much more clear how to re-construct
the data set in case of erasure (known data lost).
You can have a look, for reference, at:
http://lsirwww.epfl.ch/wdas2004/Presentations/manasse.ppt
If you search for something like "Reed Solomon Vandermonde"
you'll find even more information.
Hope this helps.
bye,
--
piergiorgio
next prev parent reply other threads:[~2011-06-11 10:13 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-09 0:01 Triple-parity raid6 David Brown
2011-06-09 1:49 ` NeilBrown
2011-06-09 11:32 ` David Brown
2011-06-09 12:04 ` NeilBrown
2011-06-09 19:19 ` David Brown
2011-06-10 3:22 ` Namhyung Kim
2011-06-10 8:45 ` David Brown
2011-06-10 12:20 ` Christoph Dittmann
2011-06-10 14:28 ` David Brown
2011-06-11 10:13 ` Piergiorgio Sartor [this message]
2011-06-11 11:51 ` David Brown
2011-06-11 13:18 ` Piergiorgio Sartor
2011-06-11 14:53 ` David Brown
2011-06-11 15:05 ` Joe Landman
2011-06-11 16:31 ` David Brown
2011-06-11 16:57 ` Joe Landman
2011-06-12 9:05 ` David Brown
2011-06-11 17:14 ` Joe Landman
2011-06-11 18:05 ` David Brown
2011-06-10 9:03 ` David Brown
2011-06-10 13:56 ` Bill Davidsen
2011-06-09 22:42 ` David Brown
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