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Re: RAID Controller Caching and XFS

To: linux-xfs <linux-xfs@xxxxxxxxxxx>
Subject: Re: RAID Controller Caching and XFS
From: Florin Andrei <florin@xxxxxxx>
Date: 05 Jun 2002 14:56:57 -0700
In-reply-to: <20020605160422.A14886@pla-muek.reefedge.com>
References: <auto-000021147946@dc-mx04.cluster1.charter.net> <4.3.2.7.2.20020603111517.03b4e1b0@pop.xs4all.nl> <20020605160422.A14886@pla-muek.reefedge.com>
Sender: owner-linux-xfs@xxxxxxxxxxx
On Wed, 2002-06-05 at 13:04, Thor Lancelot Simon wrote:
> 
> More importantly, you don't *want* to use readahead because it will waste
> valuable cache space on the controller that could be used to cache small
> writes.

How safe is it to enable caching for writes on the controller (if you
don't have a battery on it)?
I mean, i configured my Mylex with "Write Through" for data-safety
reasons, even though the other option ("Write Back") could offer
improved performance.

-- 
Florin Andrei

"You can get excited about just any subject if you study it enough.
It's the deep knowledge that makes a topic interesting." - Larry McVoy


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