From: Suresh Jayaraman <sjayaraman@suse.de>
Subject: Re: [NFS] nfsd hangs 2.6.28 through 2.6.28.7
Date: Tue, 03 Mar 2009 14:55:19 +0530
Message-ID: <49ACF77F.303@suse.de>
References: <49AC747F.6010001@atmos.washington.edu>
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To: warren-qmPYOCrcNLLyFCzt5hm0YvZ8FUJU4vz8@public.gmane.org
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David Warren wrote:
> We are seeing nfsd getting stuck in d wait at boot time. The fix seems
> to be stopping in single user mode prior to nfs starting, renaming
> /var/lib/nfs/v4recovery/ and making a new one, then letting the system
> continue. When it boots and hangs, all processes that touch
> /var/lib/nfs/v4recovery/ go into D-wait. However, if you rename it and
(Cc fixed)

Can you get a Sysrq + w output by doing either
    echo w > /proc/sysrq-trigger
   (or)
   Sysrq + w (hold Sysrq key and press 'w')
and capture dmesg output and attach?

It you could not get a shell, you could try to disable NFS during boot
and try to start NFS once the machine boots and then try.
Is the NFS server running inside a Virtual machine?


Thanks,

-- 
Suresh Jayaraman

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