On Tue, 31 Mar 1998, Dug Song wrote:

> On Tue, 31 Mar 1998 braam_at_cs.cmu.edu wrote:
> 
> > Almost correct.  RVM is used for Metadata -- acl's, vnode's, version
> > vectors (for server replication), directory contents. This is managed
> > through a transaction system, and we feel it would be very hard to do
> > it without transactions, since during resolution/repair/reintegration
> > many changes are being made, but one may have to back out (e.g. if a
> > server crashes, or if an unexpected inconsistency arises).
> 
> just for kicks, take a look at peter chen's Rio project here at umich
> (http://www.eecs.umich.edu/Rio/). my friend dave implemented a blindingly
> fast transaction system called Vista on top of it; he won best paper at
> ACM SOSP 1997. they have software available for FreeBSD, and the Vista
> interface is similar to RVM...

Well, thanks for your enthusiasm Dug... Everything you mentioned about
Vista is correct, except that we didn't win Best Paper at SOSP...

	Dave

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Dave Lowell   Computer Science Grad Student
dlowell_at_umich.edu    University of Michigan
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