From: Roy Sigurd Karlsbakk <roy@karlsbakk.net>
To: Dale Stephenson <dale.stephenson@quantum.com>,
'Kasper Dupont' <kasperd@daimi.au.dk>
Cc: Christian Vik <cvik@vanadis.no>,
linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org
Subject: Re: SV: RAID-6 support in kernel?
Date: Tue, 4 Jun 2002 14:59:55 +0200 [thread overview]
Message-ID: <adidsu$k6r$2@main.gmane.org> (raw)
In-Reply-To: <2D0AFEFEE711D611923E009027D39F2B02F17E@nasexs1.meridian-data.com>
> Of course, for a 4 drive setup there's no reason to use RAID 6 at all (RAID
> 10 will withstand any two drive failure if you only use 4 drives), but
> that's the reasoning. I think the best way to deal with the read-modify
> write problem for RAID 6 is to use a small chunk size and deal with NxN
> chunks as a unit. But YMMV.
RAID10 will _not_ withstand any two-drive fail in a 4-drive scenario. If D1
and D3 fail, you're fscked
D1 D2
D3 D4
--
Roy Sigurd Karlsbakk, Datavaktmester
Computers are like air conditioners.
They stop working when you open Windows.
next prev parent reply other threads:[~2002-06-04 12:59 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-06-03 19:03 SV: RAID-6 support in kernel? Dale Stephenson
2002-06-04 12:59 ` Roy Sigurd Karlsbakk
2002-06-04 12:59 ` Roy Sigurd Karlsbakk [this message]
[not found] <A2C65A3296DA4A4FB30DB57A9A464A16436851@exchange.lan.vanadis.no>
2002-06-03 9:59 ` Roy Sigurd Karlsbakk
2002-06-03 9:59 ` Roy Sigurd Karlsbakk
2002-06-03 11:08 ` Kasper Dupont
2002-06-03 11:08 ` Kasper Dupont
2002-06-03 13:28 ` Roy Sigurd Karlsbakk
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