[ofa-general] Re: [Query] ib add path record cache

[Hal Rosenstock]

On Thu, 2007-05-31 at 13:16, Sean Hefty wrote:
> > Do you have some pointer/doc related to the design of current SA_CACHE
> > module....It will make things faster to understand........if not then
> > I will require your support to understand the things, Though I have
> > some top level view.
> 
> I don't have any design docs.  But I will happily answer any questions.
> 
> > Ok you mean Its not required to create a separate device interface in
> > cache module as such. I think this is a good idea......Just for
> > confirmation...whether /dev/umad is active on each node other than SM
> > node?
> 
> After giving this more thought, I like this approach.  If we use a 
> vendor/application specific MAD class that used the SA class as a 
> template, we can begin creating a distributed SA.
> 
> I haven't worked through details, but as an example, to load a PR into 
> the local SA, you could send it a 'Set' MAD with a PR in the data 
> portion.  To load multiple paths, we could add a 'SetTable' method.  To 
> remove a path, we would send a 'Delete' MAD.
> 
> Whether or not the MADs are sent from the local node, or some other node 
> wouldn't matter.

Would there be some sort of weak authorization needed to do this (like
some key of some sort) ?

-- Hal

>   We can use this mechanism to pre-load the cache or 
> simply push updates to it.
> 
> - Sean
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