Re: Smarter blacklisting?

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On Wed, 19 Apr 2017, John Spray wrote:
> I was already pondering where the more detailed blacklist info (e.g.
> ids of clients) should go, as it's not something that actually needs
> to be shared with all the normal OSDMap subscribers (it's only the
> entity that does the blacklist removal that needs to see that).  It's
> already not ideal imho that we expose the list of all blacklisted
> clients to all the other clients -- in general they shouldn't be able
> to e.g. learn one another's addresses like this.

We already break the OSDMap encoding into two sections: the first part 
that clients care about, and the second part that is only used by OSDs.  
(The kernel client doesn't bother to decode the second half.)

I suspect it wouldn't take much to send abbreviated maps (and 
incrementals) to clients that don't include that second half at all...

sage
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