[AFS3-std] Re: first draft: ubik update proposal

Andrew Deason adeason@sinenomine.net
Tue, 15 Feb 2011 15:59:23 -0600


On Tue, 15 Feb 2011 16:16:57 -0500
Jeffrey Hutzelman <jhutz@cmu.edu> wrote:

> > We don't "need" them, but the extra 4 bytes don't seem like a big
> > problem. We know 32-bit counters do rollover at some sites.
> 
> We do?  If that's the case, then 64-bit counters are a no-brainer.

This tid counter has overflowed at three sites that I am aware of. Don't
you remember arguing about the writeTidCounter thing in OpenAFS? (gerrit
2647) That was triggered by the counter going negative.

-- 
Andrew Deason
adeason@sinenomine.net