In it's infinite wisdom, the upgrade from F23 to F24 updates PostgreSQL from 9.4 to 9.5.5 making existing databases unusable.
I suppose that there is a warning about this somewhere but it certainly isn't part of the upgrade process.
I know that I can use pg_upgrade to migrate my databases but need the 9.4 binaries to do that.
Are the files in /usr/lib64/pgsql/postgresql-9.4/bin the correct ones to use with pg_upgrade?