From: Andi Kleen <andi@firstfloor.org>
To: Peter Cordes <peter@cordes.ca>
Cc: xfs@oss.sgi.com
Subject: Re: RAID5/6 writes
Date: Wed, 01 Oct 2008 21:36:13 +0200 [thread overview]
Message-ID: <87k5csp0pe.fsf@basil.nowhere.org> (raw)
In-Reply-To: <20081001175237.GJ32037@cordes.ca> (Peter Cordes's message of "Wed, 01 Oct 2008 14:52:37 -0300")
Peter Cordes <peter@cordes.ca> writes:
>
> XFS knows (or should have been told by the admin with mkfs!) what the
> stripe geometry is: block size and stripe width. So it could apply
> this optimization only if it would make a write cover more whole
> blocks or whole stripes.
It's a nice idea, but I don't think XFS knows the actual RAID level,
only the stripes. And for 0/1 it wouldn't be a good idea.
-Andi
next prev parent reply other threads:[~2008-10-01 19:34 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-01 17:52 RAID5/6 writes Peter Cordes
2008-10-01 19:36 ` Andi Kleen [this message]
2008-10-01 20:13 ` Peter Cordes
2008-10-01 20:44 ` Andi Kleen
2008-10-01 21:01 ` Peter Cordes
2008-10-02 0:32 ` Dave Chinner
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