From: Colonel Hell <amritanshu@gmail.com>
To: linux-raid@vger.kernel.org
Subject: RAID6 Query
Date: Tue, 16 Aug 2005 22:30:06 +0800 [thread overview]
Message-ID: <4ecc821305081607304a7c4da0@mail.gmail.com> (raw)
In-Reply-To: <016001c5a26a$05ad3e40$0400a8c0@LocalHost>
Hi,
I just went thru a couple of papers describing RAID6.
I dunno how relevant this discussion grp is for the qry ...but here I go :) ...
I couldnt figure out why is P+Q configuration better over P+q' where
q' == P. What I mean is instead of calculating a new checksum (thru a
lot of GF theory etc) just store the parity block (P)again. In this
case as well we have the same amount of fault tolerance or not
:-s ...
Let me know,
here are the links which I went thru.
http://kernel.org/pub/linux/kernel/people/hpa/raid6.pdf
http://www.intel.com/design/storage/papers/308122.htm
Regards,
Amritanshu.
next prev parent reply other threads:[~2005-08-16 14:30 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20050717182650.24540.patches@notabene>
2005-07-17 8:27 ` [PATCH md ] When resizing an array, we need to update resync_max_sectors as well as size NeilBrown
2005-07-17 12:10 ` Found a new bug! djani22
2005-07-17 22:13 ` Neil Brown
2005-07-17 22:31 ` djani22
2005-08-14 22:38 ` djani22
2005-08-15 1:21 ` Neil Brown
2005-08-15 10:50 ` djani22
2005-08-16 13:54 ` perfomance question djani22
2005-08-16 14:30 ` Colonel Hell [this message]
2005-08-16 15:40 ` RAID6 Query dean gaudet
2005-08-16 16:44 ` Colonel Hell
2005-08-18 4:59 ` perfomance question Neil Brown
2005-08-18 15:20 ` djani22
2005-08-18 4:34 ` Found a new bug! Neil Brown
2005-08-18 15:39 ` djani22
2005-08-20 9:55 ` Oops in raid1? djani22
2005-08-20 15:53 ` Pallai Roland
2005-08-20 16:26 ` djani22
2005-08-20 16:50 ` Pallai Roland
2005-08-20 16:57 ` djani22
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