Justin Pryzby <pry...@telsasoft.com> writes: > I've used pg_upgrade like this before, but maybe from a different (recent) > 11dev HEAD; I found: "pg_upgrade supports upgrades from 8.4.X and later to the > current major release of PostgreSQL, including snapshot and beta releases." > (But maybe upgrades FROM beta releases aren't supported in the general case?)
Yeah, that :-(. pg_dump's approach to cross-version catalog differences can only cope with differences between major versions. So if it sees a server that calls itself 11-something it's going to think that means the current catalog layout. There's no good way to deal with pre-beta snapshot versions, other than to dump with a pg_dump of the same vintage. regards, tom lane