linux-kernel - Re: NFS regression? Odd delays and lockups accessing an NFS export.

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Date:	Mon, 18 Aug 2008 15:20:58 -0400
From:	Trond Myklebust <trond.myklebust@....uio.no>
To:	Grant Coady <gcoady.lk@...il.com>
Cc:	linux-kernel@...r.kernel.org, neilb@...e.de, bfields@...ldses.org,
	linux-nfs@...r.kernel.org
Subject: Re: NFS regression?  Odd delays and lockups accessing an NFS
	export.

On Mon, 2008-08-18 at 12:02 +1000, Grant Coady wrote:
> Hi there,
> 
> I've been using NFS here for years, lately there's something odd going on 
> since about a month or so.  Previously reported last month:
> http://www.gossamer-threads.com/lists/linux/kernel/951419?page=last
> 
> Now with 2.6.27-rc3 on one of the client boxes I get a complete stall 
> at odd times when accessing the server's exported directory, cannot 
> see a pattern to it.  Eventually recovers after a Ctrl-C.  Nothing in 
> the server or client log files.  Not easy to reproduce either.
> 
> The server runs 2.6.26.2 at the moment.
> 
> Server config, etc: http://bugsplatter.id.au/kernel/boxen/deltree/
> Client config, etc: http://bugsplatter.id.au/kernel/boxen/pooh/

Please try to reproduce the hang, then do

	echo 0 >/proc/sys/sunrpc/rpc_debug

and send the output from 'dmesg'...

Cheers
  Trond

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