At 01:41 PM 11/5/2008, Chuck Lever wrote:
>On Nov 5, 2008, at 1:05 PM, Tom Tucker wrote:
>> FWIW, We already require IPoIB because the NFSRDMA implementation
>> uses the RDMA CM which is IP address based.
>
>Oh, that's too bad. I thought the IP sideband requirement would go
>away with NFSv4 over RDMA because NLM/NSM would be retired.
Just think of it like ARP. The RDMA CM is a low-level discovery and
connection protocol, which isn't actually used by RPC or NFS at all.
It just magically comes into play when the RPC client calls into the
rdma_connect() subsystem. RDMA uses IP addresses, btw.
Tom.