Hello all, We're running a 13.x installation and looking to upgrade to 14.1. This is all on Linux servers. We have a main instance running with a number of hot standby replicas configured. In the past, we have done a dump/restore on a slow evening and then rsynced all the bits around so that the main server and all replicas were identical at the start. The database has gotten larger now (~1TB) so that is a less desirable option. So I am thinking to do a pg_upgrade --link on each of the main and the hot standby replicas, and then restarting all the processes. I'm sure this will work fine on the main server, but I have not seen any mention of this working in the expected way on the hot standby replicas. Can someone confirm that the steps I described here will work in the way I am optimistically expecting it will? I should mention that we are running on ZFS, and will take a snapshot prior to the upgrade, so that if something goes sideways with our use of --link we can revert back instantly. Thank you, Alan
