Re: Fast index build vs. PITR

Christopher Kings-Lynne wrote:
> > What I'm thinking about right now is tweaking the index-build code to
> > write to WAL only if it sees that PITR is actually in use.  It would
> > have to look at the GUC variables to determine whether WAL archiving
> > is enabled.  If archiving isn't turned on, then we could assume that
> > rollforward from a past backup isn't needed in this installation, and
> > use the WAL-less index build method.
> 
> Seems reasonable.

What happens if someone turns on archiving while the index is being
built?  Is that possible?

I assume if someone turns on archiving in postgresql.conf, sighups the
postmaster, then does a tar backup, they should be able to do archiving,
no?


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