It’s not possible I suppose. LNet module read configuration only once during 
the module load stage. Therefore you cannot reconfigure it without unloading. 
So, you need to stop Lustre anyway.

Dmitry.
From: Hebenstreit, Michael
Sent: Thursday, May 15, 2014 7:14 PM
To: [email protected]
Cc: Eremin, Dmitry; Lind, Bobbie J; Jones, Peter A; Dilger, Andreas
Subject: module dependecies

Please do not ask why, but I need to be able to replace the IB stack (as in – 
all InfiniBand modules) at runtime with a Lustre FS mounted. Is there a 
possibility to tell lnet to completely switch to tcp, unload ko2iblnd.ko and 
next unload the IB stack, load the new IB stack, load a matching ko2iblnd.ko 
and then switch lnet back to preferring o2ib?

Thanks
Michael

------------------------------------------------------------------------
Michael Hebenstreit                 Senior Cluster Architect
Intel Corporation, MS: RR1-105/H14  Software and Services Group/DCE
4100 Sara Road                      Tel.:   +1 505-794-3144
Rio Rancho, NM 87124
UNITED STATES                       E-mail: 
[email protected]<mailto:[email protected]>


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