[openib-general] Re: SA cache design

[Michael S. Tsirkin]

Quoting r. Sean Hefty <mshefty at ichips.intel.com>:
> Subject: Re: SA cache design
> 
> Michael S. Tsirkin wrote:
> >>>To keep the design as flexible as possible, my plan is to implement the 
> >>>cache in userspace.  The interface to the cache would be via MADs.  
> >>>Clients would send their queries to the sa_cache instead of the SA 
> >>>itself.  The format of the MADs would be essentially identical to those 
> >>>used to query the SA itself.  Response MADs would contain any requested 
> >>>information.  If the cache could not satisfy a request, the sa_cache 
> >>>would query the SA, update its cache, then return a reply.
> > 
> > 
> > Bouncing queries required for e.g. IPoIB or SDP
> > to userspace seems like a deadlock scenario in case userspace
> > is located e.g. on an NFS share.
> 
> The SA itself is implemented in userspace.  I don't see any issue here.
> 
> - Sean

Sure, but its not running on the local (possibly diskless) node.

-- 
MST