From: Peter Staubach <staubach@redhat.com>
To: Mario Storti <mstorti@intec.unl.edu.ar>
Cc: nfs@lists.sourceforge.net
Subject: Re: Re: NFS synchronization problems on Beowulf cluster
Date: Thu, 01 Jun 2006 11:56:45 -0400 [thread overview]
Message-ID: <447F0E3D.9070809@redhat.com> (raw)
In-Reply-To: <loom.20060601T164005-982@post.gmane.org>
Mario Storti wrote:
>Peter Staubach <staubach <at> redhat.com> writes:
>
>
>
>>What is the local file system type being exported on the NFS servers?
>>
>>
>
>It is software RAID mounted on top of XFS. At first time we suspected
>of this combination, and the first thing we do is to clone the system
>on a plain ext3 filesystem without RAID. The cloned cluster with two
>nodes exhibited exactly the same behaviour, so we don't think now that
>the problem is in the combination of NFS with RAID+XFS. It ssems to be
>something in the NFS setup/configuration itself.
>
I see.
I see from the nfsstat output that this job mix is _very_ heavily write
intensive. I might suspect that this may be contributing to the issue
being seen. The consistency for files is very relaxed when those files
are being written to.
Are any special mount parameters being used?
Thanx...
ps
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next prev parent reply other threads:[~2006-06-01 15:56 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-31 19:23 NFS synchronization problems on Beowulf cluster Mario Storti
2006-06-01 13:58 ` Mario Storti
2006-06-01 14:25 ` Peter Staubach
2006-06-01 14:54 ` Mario Storti
2006-06-01 15:56 ` Peter Staubach [this message]
2006-06-01 16:35 ` Mario Storti
2006-06-01 17:22 ` Peter Staubach
2006-06-01 18:50 ` Mario Storti
2006-06-01 19:03 ` Peter Staubach
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