Robert Haas wrote: > On Mon, May 2, 2016 at 12:30 PM, Alvaro Herrera > <alvhe...@2ndquadrant.com> wrote: > > A customer of ours was unable to pg_upgrade a database, with this error: > > > > old and new databases "postgres" have a mismatched number of relations > > Failure, exiting > > > > After some research, it turned out that pg_largeobject had acquired a > > toast table. After some more research, we determined that it was > > because right after initdb of the old database (months or years prior) > > they moved pg_largeobject to another, slower tablespace, because for > > their case it is very bulky and not used as much as the other data. > > (This requires restarting postmaster with the -O parameter).
> I think that if you use -O, and it breaks something, you get to keep > both pieces. pg_largeobject is a big problem, and we should replace > it with something better. And maybe in the meantime we should support > moving it to a different tablespace. But if it's not officially > supported and you do it anyway, I don't think it's pg_upgrade's job to > cope. I'm happy with the solution that pg_upgrade has a step in the check stage that says "catalog XYZ has a toast table but shouldn't, aborting the upgrade". (Well, not _happy_, but at least it's a lot easier to diagnose). -- Álvaro Herrera http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services -- Sent via pgsql-hackers mailing list (email@example.com) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers