On 10/1/2012 4:53 PM, Jason Gunthorpe wrote:
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.
Our version of OFED has full support of APM in RDMA-CM and it's being
used by SDP and RDS..
IPoIB is using CM instead of RDMA CM so we can not leverage it..IPoIB
APM will need to have its own implementation..
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
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