Ivan's XO Field Upgrade Proposal

Dan Williams dcbw at redhat.com
Tue Jun 26 12:32:57 EDT 2007


On Tue, 2007-06-26 at 12:16 -0400, C. Scott Ananian wrote:
> On 6/26/07, Dan Williams <dcbw at redhat.com> wrote:
> > Downside of this is, as Alex pointed out, it'll load the mesh a _lot_
> > more than XO->XO updates.
> 
> Not necessarily.  Rsync is pretty efficient: we're still basically
> distributing just (blockwise) diffs.  And we can always do XO-to-XO
> later: the important thing is to get a rock-solid basis.  The selling
> point (to me) is the simplicity.  Like I said: its the simplest thing
> that works.

I'm not arguing simplicity; just that we have to be aware of the
implications of having lots of XOs pulling from the server with some
overlap with this method, but we don't with XO->XO.  We just have to
make the tradeoffs clear, and understand them.

Dan

> I can do some benchmarks if people actually need to see numbers.
>  --scott
> 



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