Re: NFS regression? Odd delays and lockups accessing an NFSexport.

From: Trond Myklebust
Date: Mon Aug 18 2008 - 15:21:20 EST


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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