RE: how to defragment xfs?

["Allan Haywood" <allanh@xxxxxxxxxxxxxx>]

On Thu, 1 Sep 2005, David Chinner wrote:
> On Wed, Aug 31, 2005 at 04:52:23PM -0400, Ming Zhang wrote:
> > Hi folks
> >
> > I wonder how I can defragment the xfs?
>
> Ob-FAQ: Google is your friend:
>
> http://www.google.com/search?q=how+to+defragment+XFS
>
> xfs_fsr(8) is what you want - it's in the xfsdump package IIRC...

And that assumes that you need to defragment your fs in the first place.

----------------------------

You can use the following command to check fragmentation:

xfs_db -c frag -r /dev/md0

replace /dev/md0 with the name of the device you want to check.

This is what the output will look like:

actual 184, ideal 176, fragmentation factor 4.35%


Allan Haywood
Data Warehouse Systems Specialist
DATAllegro
65 Enterprise
Aliso Viejo, CA 92656
949.330.7633 direct
949.330.7691 fax
E-mail: allanh@xxxxxxxxxxxxxx
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