From: Emmanuel Florac <eflorac@intellique.com>
To: weber@zbfmail.de
Cc: Xfs <xfs@oss.sgi.com>
Subject: Re: xfs help question
Date: Sun, 30 Mar 2014 22:22:14 +0200 [thread overview]
Message-ID: <20140330222214.4901d7ff@galadriel.home> (raw)
In-Reply-To: <6997ecc6ee5c7096ded12e8ad3d77d12@zbfmail.de>
Le Sun, 30 Mar 2014 09:12:20 +0200 vous écriviez:
> i also dont get it with the write-disk cache at all,
> its an linux softraid, is the best then to use 'nobarrier' and let the
> 'disk write cache on'?
>
> or is best solution on linux softraid 'disk write cache' on with xfs
> barrier on?
It depends. write cache without an UPS is a very efficient way to lose
data. However if you only care about performance, let write cache on
and barriers off.
> also, should i tweak with sunit,swidth? and how do i calculate best
> setting?
With a recent kernel, mkfs.xfs should determine automatically the md
geometry, so no, don't try to tweak su and sw.
--
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Emmanuel Florac | Direction technique
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| <eflorac@intellique.com>
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next prev parent reply other threads:[~2014-03-30 20:22 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-30 7:12 xfs help question Marko Weber|8000
2014-03-30 20:22 ` Emmanuel Florac [this message]
2014-03-30 23:46 ` Dave Chinner
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