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Re: performance over multiple disks

To: xfs@xxxxxxxxxxxxxxxxxxx
Subject: Re: performance over multiple disks
From: Chris Wedgwood <cw@xxxxxxxx>
Date: Thu, 31 Oct 2002 12:28:41 -0800
Cc: James Rich <james@xxxxxxxxxxxxx>, XFS mailing list <linux-xfs@xxxxxxxxxxx>
In-reply-to: <20021031211332.U30076@xxxxxxxxxxx>
References: <Pine.LNX.4.44.0210311039310.21908-100000@xxxxxxxxxxxxxxxxxxxx> <20021031204233.Q30076@xxxxxxxxxxx> <20021031194703.GC24676@xxxxxxxxxxxxx> <20021031211332.U30076@xxxxxxxxxxx>
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On Thu, Oct 31, 2002 at 09:13:32PM +0100, Ragnar Kj?rstad wrote:

> If the filesystem uses different layouts depending on the low-level
> storage system that will affect the result as well. How does XFS
> handle underlaying RAID0 compared to concatenated devices?

mkfs.xfs tries to be smart about MD devices and align things as a
result of this.  I'm not sure how well it works in practice though, I
can test a little later...


P.S. You've got bogus 8-bit cruft in the headers... it's messing with
     mutt..  Arguably mutt should be fixed, but I'm not sure 8-bit

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