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List:       linux-xfs
Subject:    Re: Anyone using XFS in production on > 20TiB volumes?
From:       Eric Sandeen <sandeen () sandeen ! net>
Date:       2010-12-23 21:12:55
Message-ID: 4D13BB57.80309 () sandeen ! net
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On 12/23/10 12:06 PM, Justin Piszcz wrote:
> 
> On Thu, 23 Dec 2010, Justin Piszcz wrote:
> 
> 
> Hi,
> 
> How come parted using (optimal at 1mb alignment is slower than no
> partition?  

because parted got it wrong, sounds like.

> In addition, sunit and swidth set properly as mentioned
> earlier appears to be _slower_ than defaults with no partitions.

stripe unit over an incorrectly aligned partition won't help
and I suppose could make it worse.

align your partitions, using sector units, to a stripe width unit.
Set the stripe width properly on the fs on top of that.

-Eric
 
> 
> http://home.comcast.net/~jpiszcz/20101223/final.html
> 
> Justin.
> 

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