From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Paul Grun" Subject: RE: APM support for IPoIB Date: Tue, 2 Oct 2012 09:53:17 -0700 Message-ID: <009101cda0be$6d8cb220$48a61660$@com> References: <506A17EA.8080400@oracle.com> <20121001235303.GH22342@obsidianresearch.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20121001235303.GH22342-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org> Content-Language: en-us Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: 'Jason Gunthorpe' , 'Bang Nguyen' Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, 'Richard Frank' List-Id: linux-rdma@vger.kernel.org Jason - Like your idea for full APM support especially across subnets, but wouldn't that require some sort capability that lives above the subnet level and is able to query both SMs/SAs? Sounds vaguely router-ish? -Paul > -----Original Message----- > From: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org [mailto:linux-rdma- > owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org] On Behalf Of Jason Gunthorpe > Sent: Monday, October 01, 2012 4:53 PM > To: Bang Nguyen > Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org; Richard Frank > Subject: Re: APM support for IPoIB > > On Mon, Oct 01, 2012 at 03:23:38PM -0700, Bang Nguyen wrote: > > > Adding APM support for IPoIB seems like something worthwhile and we're > > thinking about it..but are wondering why has hasn't been done > > already..any comments/suggestions? > > I've been quite supportive of APM in the past, IMHO I think it is > something unique to IB that should be exploited as often as possible. > > Improving the RDMA-CM to setup APM at all would be a great first step, but > some SM work is also ultimately needed to get sufficiently > independent/redundant paths. > > I would like to see the full APM support eventually implemented - this > would be fail over across adaptor ports, where each port is on a seperate > subnet - so you get full redundancy of cabling, switching and management > software. > > Jason > -- > To unsubscribe from this list: send the line "unsubscribe linux-rdma" in > the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at > http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html