As far as I can tell, postgresql was entirely wiped.

Did the old database end up somewhere? I tried to see if there was a log from the RPM install, but I can't find anything.

I only use it for Quassel, but it'd be nice to have it back. I knew when I saw that openSUSE had upgraded PostgreSQL in the release press that it would be a pain. In past upgrades postgresql would just complain and not start becaues it refused to use the old database and you had to do a complicated procedure where you installed both versions of postgresql at the same time (openSUSE does not make that easy) and do an export/import. But this is worse!