From: Stan Hoeppner <stan@hardwarefreak.com>
To: xfs@oss.sgi.com
Subject: Re: cannot defrag volume, fragmentation factor 21.73%
Date: Mon, 18 Oct 2010 15:16:40 -0500 [thread overview]
Message-ID: <4CBCAB28.90708@hardwarefreak.com> (raw)
In-Reply-To: <4CBC3910.70806@cape-horn-eng.com>
Richard Ems put forth on 10/18/2010 7:09 AM:
> I ran several times xfs_fsr, but the 21.73% factor stays there.
> There where some busy or modified files on which I started xfs_fsr later
> again, but this ones where small files and the 21.73% is still there.
>
> Any ideas?
Yes. The answer is in a thread in last month's archive:
http://oss.sgi.com/pipermail/xfs/2010-September/047003.html
Dave Chinner put forth on 9/11/2010 3:23 AM:
> xfs_db used buffered IO on the block device, which is not coherent
> with the filesystem. If you are using it on an active filesystem,
> then running "echo 1 > /proc/sys/vm/drop_caches" before you run
> xfs_db should make it read from disk at least once....
--
Stan
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next prev parent reply other threads:[~2010-10-18 20:15 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-18 12:09 cannot defrag volume, fragmentation factor 21.73% Richard Ems
2010-10-18 12:39 ` Michael Monnerie
2010-10-18 13:46 ` Richard Ems
2010-10-18 17:58 ` Michael Monnerie
2010-10-18 20:16 ` Stan Hoeppner [this message]
2010-10-18 23:10 ` Dave Chinner
2010-10-19 9:37 ` Richard Ems
2010-10-22 10:12 ` Richard Ems
2010-10-22 21:02 ` Michael Monnerie
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