On Fri, 2008-10-10 at 14:56 -0400, Brock Palen wrote: > > Not right now, the question was because we were thinking abou tit
OK. In any case, I guess the point I was making is that some servers would need IB as well as the clients, or it would be pointless. Just to be absolutely clear. > Really? LNET configuration/routing is not (yet) one of my strong points, but I'm fairly sure, yes. > So given that lnet does the best path and it is not part of > lustre its self. > So if we only hook some of the OSS by IB, is there a way to have a > user (who is a user of IB) IO prefer the IB connected OSS's. If you have a client which is connected to multiple networks (i.e. IB and TCP) LNET will use them both. You might have to poke LNET to do so using module parameters, but I think it will use both automatically. Regardless, once LNET has it's list of interfaces and networks it routes requests accordingly depending on their destination. If a target (either an MDS or OSS) only has a TCP path that path will be used. If a target has more than one path the "best" path will be chosen. I tend to think o2iblnd trumps socklnd. Maybe if there is an LNET engineer reading he can give you more details on how this best path is chosen. > If that is not possible now, I think some of the patches announced > that are for 1.8 or 2.0 had the ability to select a OSS for only > given users. Am I correct? I think you are talking about OST pools. I'm not sure which release that is targeted for. b. _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
