Bruce Momjian <pgman@candle.pha.pa.us> writes:
> We have to get some oid filename mapping into pg_upgrade too for it to
> work.
Good point. In theory you could hack the pg_class.relfilenode column
to match the older database, but we have no code to do it.
BTW, I'm also suspicious about whether pg_class.oid !=
pg_class.relfilenode actually works. I think there may be some places
where we are using one but should be using the other. I have a TODO
item to grovel through the code and make sure this is all okay, but it's
not going to get to the top of the queue until there's a pressing reason
to do it.
Oh well, another cycle with no pg_upgrade :-(
regards, tom lane