On Wed, Aug 3, 2011 at 10:38 AM, Jim Rees <rees@xxxxxxxxx> wrote:
> Myklebust, Trond wrote:
>
> Can you try to turn on the callback debugging ('echo 256 >
> /proc/sys/sunrpc/nfs_debug')? A wireshark trace of what is going on
> during the hang itself might also help.
>
> It doesn't fail with callback debugging turned on. I suspect the output to
> my slow serial console disrupts the timing.
>
> The trace is in
> http://www.citi.umich.edu/projects/nfsv4/pnfs/block/download/089.pcap
In frame 8785, client returned NFS4ERR_DELAY in response to
CB_SEQUENCE and the next RPC was 12s later. So it should be the case
that Trond mentioned above.
--
Thanks,
Tao
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