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Re: XFS unlink still slow on 3.1.9 kernel ?

To: Richard Ems <richard.ems@xxxxxxxxxxxxxxxxx>
Subject: Re: XFS unlink still slow on 3.1.9 kernel ?
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Mon, 13 Feb 2012 13:02:20 -0500
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>, xfs@xxxxxxxxxxx
In-reply-to: <4F394E10.9000804@xxxxxxxxxxxxxxxxx>
References: <4F394116.8080200@xxxxxxxxxxxxxxxxx> <20120213170825.GA7197@xxxxxxxxxxxxx> <4F394442.9020307@xxxxxxxxxxxxxxxxx> <20120213171556.GA13449@xxxxxxxxxxxxx> <4F3947D6.5060402@xxxxxxxxxxxxxxxxx> <20120213172937.GA25248@xxxxxxxxxxxxx> <4F394E10.9000804@xxxxxxxxxxxxxxxxx>
User-agent: Mutt/1.5.21 (2010-09-15)
On Mon, Feb 13, 2012 at 06:53:20PM +0100, Richard Ems wrote:
> I will try to install a > 3.2 kernel and will create new XFS partitions
> with "-i size=1024", since we use ACLs a lot for user access.
> Is there a chance to change existing XFS partitions to "-i size=1024" ?

Unfortunately not.  Note that the speedups in 3.2 only matter for
out of line attributes - once you store the ACLs inside the inode the
code that makes it dog slow in old kernels is never used.

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