Lamar Owen <lamar.owen@wgcr.org> writes:
> That is a great side-effect. Now, if there were a way to initdb just
> template0, leaving everything else in place, then rebuilding template1
> -- of course, a similar ability is there now, but the two-stage initdb
> this implies could make pg_upgrade work smoother, in cases where the
> system catalogs are the only change from one major version to the next.
I'm missing something --- I don't see how this affects pg_upgrade one
way or the other, except of course that it should be prepared to cope
with user data in template1 (not sure if it does or not now).
pg_upgrade won't be usable for the 7.1 transition anyway, because of WAL
changes (page header format is changing). I dunno whether it will be
usable at all under WAL --- Vadim will have to comment on that.
regards, tom lane