Les writes:

> I think this will need some sort of atomic-operation reference count 
> manager at the heart of things so you don't do those lookups except as a 
> repair step.

Yes.

> Will there be a way to disable the de-dup operations completely in the 
> case where the underlying filesystem does it at the block level?  I'd 
> expect such filesystems to become common and stable within the life of 
> this backuppc version.

Good point.  I think I would keep the file-level de-dup since I
think it would be pretty efficient.

But turning off compression should allow the underlying filesystem
to then do a good job on block-level de-dup.

Craig

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