Reduce duplicate symbols, merge server_id

[Volker Lendecke]

On Tue, May 03, 2011 at 06:06:51PM +1000, Andrew Bartlett wrote:
> What I'm confused about is how this will interact with serverid.tdb.  I
> my proposal to use id2, it was clear that this combines with pid and vnn
> to form the lookup key and retrieves a unique_id.  How should this code
> work if there are multiple unique_id values for a given (pid, vnn)
> tuple?

The question is what we want to optimize for. If we want to
optimize for the standard model, we could change
serverid.tdb to have a list of unique_ids hosted by that
process, expecting that list to be short. If want to
optimize for the single process model, we need to key off a
separate in-process id. Given that, you're right that we
might need a separate ID in struct server_id. The classical
time vs space tradeoff.

Volker

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