As said Christopher Brown new commands are coming : CLONE PREPARE and 
CLONE FINISH to bypass this mecanism

see http://lists.slony.info/pipermail/slony1-commit/2008-January/002145.html

Henry wrote:
> Good morning all,
>
> I seem to recall (I think it was touched on by someone else) that this
> aspect *might* be addressed in a near-future version of slony:
>
> Given that some users of slony have large (your definition of large will
> vary, but let's say DBs in excess of 100GB) databases, and that the
> initial replication of a DB can take weeks, would it not be a great idea
> to have a more efficient initial 'copy' mode?  ie, either allow a user to
> dump/restore to all slaves, then start replication from that point
> (without truncating/copying/etc), or, build this functionality into slony
> so it does the dump/restore, but does not then truncate all tables and
> start from scratch?
>
> For smaller DBs this doesn't present a problem, but for larger DDs coupled
> with LARGE clusters, this is a major problem.
>
> Regards
> Henry
>
> _______________________________________________
> Slony1-general mailing list
> Slony1-general at lists.slony.info
> http://lists.slony.info/mailman/listinfo/slony1-general
>   

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