[Lustre-discuss] 1.8.1 client with 1.6.7 servers

[Andreas Dilger]

On Sep 16, 2009  11:14 +0200, Ralf Utermann wrote:
> when I mount the Lustre filesystem from a 1.8.1 client (which
> had been a 1.6.7 client before) I get the following message on 
> all OSTs:
> LustreError: 3877:0:(socklnd_cb.c:2228:ksocknal_recv_hello()) Unknown protocol version (2.x expected) from 192.168.2.43
> 
> There seems to be no problem using Lustre from this client, so
> is this just a warning, which can be ignored?

Yes, it can be ignored.  This is a message on the 1.6 server, which
doesn't understand the new protocol the 1.8 client tries to use at
first, but then the 1.8 client will fall back to the 1.6 protocol.

Cheers, Andreas
--
Andreas Dilger
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.