[Lustre-discuss] Multiple interfaces in LNet

[Isaac Huang]

On Mon, Oct 20, 2008 at 01:20:46PM +0200, Danny Sternkopf wrote:
> >> Beside of TCP it is only possible to use multiple interfaces on the same
> >> node with o2ib, right? With ko2iblnd one can setup several Lustre
> >> networks for each IB interface. In fact you must setup several Lustre
> >> networks otherwise only the 1st IB interface is used, correct?
> > 
> > Yes, ksocklnd and ko2iblnd are the only LNDs that support multiple
> > instances, i.e. LNet interfaces. Unlike ksocklnd, each ko2iblnd
> > interface only sits on one IB interface, and multiple ko2iblnd
> > interfaces can sit on a same IB interface.
> 
> That's interesting as well. Does it mean I can configure two LNet
> networks over the same IB interface like this?:
> options lnet networks=o2ib0(ib0),o2ib1(ib0)

Yes, but such config has only been used for testing, e.g. testing
routers without multi-homed nodes.

Isaac