xfs
[Top] [All Lists]

Defrag pitfals (was Re: Support for XFS File systems)

To: Chris Wedgwood <cw@xxxxxxxx>
Subject: Defrag pitfals (was Re: Support for XFS File systems)
From: Bogdan Costescu <bogdan.costescu@xxxxxxxxxxxxxxxxxxxxx>
Date: Wed, 12 Feb 2003 11:54:12 +0100 (CET)
Cc: linux-xfs@xxxxxxxxxxx
In-reply-to: <20030211201735.GA6124@xxxxxxxx>
Sender: linux-xfs-bounce@xxxxxxxxxxx
On Tue, 11 Feb 2003, Chris Wedgwood wrote:

> I will point out though that unless your filesystem is really badly
> fragmented (in which case it would be good to know why) then xfs_fsr
> can actually make some workloads *worse*.

Could you (or somebody else) please elaborate on this ?

I've switched several file systems to XFS exactly because of the feature 
of defragmenting while the FS was still mounted. I've tried to find this
kind of information prior to switching to XFS, but I failed... empirical 
evidence suggests that defragmentation helps a lot in my case, but I would 
really like to be aware of situations when this feature would become 
detrimental.

Thanks in advance!

-- 
Bogdan Costescu

IWR - Interdisziplinaeres Zentrum fuer Wissenschaftliches Rechnen
Universitaet Heidelberg, INF 368, D-69120 Heidelberg, GERMANY
Telephone: +49 6221 54 8869, Telefax: +49 6221 54 8868
E-mail: Bogdan.Costescu@xxxxxxxxxxxxxxxxxxxxx


<Prev in Thread] Current Thread [Next in Thread>