[openib-general] opensm fails to bring up subnet..

[Troy Benjegerdes]

> > No, it doesn't seem to help. To get anything to work at all, I seem to
> > need to reload all the IB modules on every maching I want to use ipoib
> > on.
> > 
> > There have been two times now I've been able to see about 4 ping
> > packets, and then one of the arp entries seems to go away.
> > 
> > (On the sm machine, also the machine I am trying to ping)
> > 10.40.5.213                      (incomplete)	ib0
> > 
> > (on another machine, trying to ping from..)
> > 10.40.137.12		ether	00:00:04:04:FE:80:00C		ib0
> 
> That may be another issue. Are all your links active and the OpenSM
> appears to be behaving better now ?
> 

The links all seem better.. opensm definitely started working better
when the hung machine was rebooted.

I can't tell anything conclusive from the patch though.

How do I go about debugging the multicast arp/ipoib stuff?