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Re: XFS NFS server Oops

To: "Ian D. Hardy" <I.D.Hardy@xxxxxxxxxxx>
Subject: Re: XFS NFS server Oops
From: Steve Lord <lord@xxxxxxx>
Date: 19 Mar 2002 16:47:14 -0600
Cc: linux-xfs@xxxxxxxxxxx
In-reply-to: <200203192236.WAA3742294@xxxxxxxxxxxxxxxxxxxxx>
References: <200203192236.WAA3742294@xxxxxxxxxxxxxxxxxxxxx>
Sender: owner-linux-xfs@xxxxxxxxxxx
On Tue, 2002-03-19 at 16:36, Ian D. Hardy wrote:
> > 
> > OK, this is something else, and I just had a brainwave about your old
> > oops though, I think you have a really fragmented file out there. Can
> > you run this on your filesystem:
> > 
> > xfs_db -r /dev/xxx (it can be mounted)
> > xfs_db: frag -f
> > 
> > and send me the output.
> > 
> > Someone reported a problem in the memory allocation code the other day,
> > and maybe, just maybe, you are hitting it.
> > 
> > Steve
> > 
> > 
> 
> # xfs_db -r /dev/md0
> xfs_db: frag -f
> actual 994261, ideal 811677, fragmentation factor 18.36%

So now try this:

xfs_fsr -v /dev/md0

it will report the files it defragments, look for something 
with a really large number of extents in the before column.

Steve

> 
> Thanks 
> 
> Ian
> -- 
> 
> ////////////////////////////////////////////////////////////////////////////
> Ian Hardy                                   
> Research Services                           
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> Southampton University                             i.d.hardy@xxxxxxxxxxx
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-- 

Steve Lord                                      voice: +1-651-683-3511
Principal Engineer, Filesystem Software         email: lord@xxxxxxx


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