Hi Nils,

It might be awhile before this change can happen. In the mean time,
the work-around is (1) mount using UDP, run something to force client
to contact lockd, then (2) umount and remount with TCP.

-Dai

Nils Goroll wrote:
> Hi Dai,
>
>> Nils, it worked for me:
>>
>> pnfs-18-21.root[503] mount -F nfs -o vers=3,proto=udp 
>> pnfs-18-22:/tmp/ipoib /tmp/mnt
>
> This is really interesting, thanks a lot for trying to reproduce the 
> issue.
>
> Though it is interesting so see that under some circumstances lockd 
> does initiate the portmapper call via udp, this is not a solution for 
> the problem I am working on because, for performance reasons, I need 
> to run NFS over TCP.
>
> Would anyone be willing to improve the network lock manager code to 
> make the transport protocol for the portmapper call configurable? For 
> me, a simple tunable would be sufficient.
>
> Thank you, Nils


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