[ofa-general] Re: [RFC] the never ending search for SA scalability

[Michael S. Tsirkin]

> Quoting Sean Hefty <sean.hefty at intel.com>:
> Subject: RE: [RFC] the never ending search for SA scalability
> 
> >I'd like to propose the following change as a simple solution for handling SA
> >scalability problems:
> >
> >Modify the ib_sa module to support an SA LID that's separate from the SM LID.
> >
> >This concept is supported by the spec through SA redirection; however, I
> >propose that we also allow the SA LID to be set manually by an administrator.
> 
> Roland,
> 
> Is the following an acceptable approach for this?
> 
> Add a class device file to the ib_sa that allows setting all SA redirection
> parameters (SL, LID, PKey, QP - with processing similar to SRP's add_target).
> 
> /sys/class/infiniband_sa/sa-mthca-0/redirect_sa
> 
> Alternatively, I can use a module parameter to redirect only the SA LID.

Hopefully, that would be something like sa/mthca0 so that
one does not need to perform tricky string parsing to find the interface
for a specific device.

Further, won't you want to have this per-port?
It's easy to imagine separate ports redirecting to different SA's.

-- 
MST