On Thu, Jul 26, 2012 at 3:01 PM, Daniel Farina <dan...@heroku.com> wrote: > For example: suppose pg_upgrade emitted full-page-write records in the > format of the new postgres version on an unoccupied timeline. One can > use PG.next tools to report on the first txid
and by txid I meant WAL position, which mucks it up a bit because that's not an option on old Postgres-es. But the overall point is the same: I think pg_upgrade would be much more safe and usable in the standby setting if it emitted data that depend upon a posterior WAL-position at the point the cluster diverges onto a new timeline that is the new version of Postgres, and it would be nice if that data incremented the WAL position rather than being applied out-of-band. And, it seems that emitting full page image records in the format of the new version is a way to accomplish that. -- fdr -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
