From mboxrd@z Thu Jan  1 00:00:00 1970
From: "H. Peter Anvin" <hpa@zytor.com>
Subject: Re: raid6
Date: Fri, 16 Jun 2006 11:27:05 -0700 (PDT)
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References: <1caa67950606142007p59c6b079xe2db9a7a94e506ef@mail.gmail.com>
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Followup to:  <1caa67950606142007p59c6b079xe2db9a7a94e506ef@mail.gmail.com>
By author:    "=?GB2312?B?uPDQ29fK?=" <xiongzige@gmail.com>
In newsgroup: linux.dev.raid
>
>         I am confronted  with a big problem of the raid6 algorithm,
> when recently I learn the raid6 code of linux 2.6 you have contributed
> .
>  Unfortunately I can not understand the algorithm of  P +Q parity in
> this program . Is this some formula for this raid6 algorithm? I realy
> respect your help,could you show me some details about this algorithm?

   http://www.kernel.org/pub/linux/kernel/people/hpa/raid6.pdf

	-hpa