From: "J. Bruce Fields" <bfields@fieldses.org>
Subject: Re: nfsd threads locked, 2.6.7 & ia64
Date: Sun, 27 Jun 2004 15:33:14 -0400
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Message-ID: <20040627193314.GE3491@fieldses.org>
References: <20040627051129.GS10560@polop.usc.edu>
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On Sat, Jun 26, 2004 at 10:11:29PM -0700, Garrick Staples wrote:
> Well here's something I've not seen yet.  All 512 nfsd threads are stuck in IO
> wait (state D in ps).  All clients are hung on that mount.  The actual
> filesystem on the server seems fine.
> 
> It start at 8am with no messages at all.
> 
> Jun 26 08:06:58 hpc-master nagios: SERVICE ALERT: hpc-fs3;nfs;CRITICAL;SOFT;1;CRITICAL: RPC program nfs  version 3 udp is not running
> Jun 26 08:07:21 hpc934-e0 kernel: nfs: server hpc-fs3 not responding, still trying
> Jun 26 08:09:12 hpc972-e0 kernel: nfs: server hpc-fs3 not responding, still trying
> Jun 26 08:09:13 hpc941-e0 kernel: nfs: server hpc-fs3 not responding, still trying
> ...
> 
> I can't find anything otherwise wrong with the machine at all, just that nfsd
> threads are stuck.  rpcinfo and showmount still work fine.  Nothing in dmesg or
> messages.  I'm stuck too.

Does Sysrq-T give you any idea where they're stuck?

--Bruce Fields


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