On Mon, Feb 23, 2026 at 06:34:42PM -0500, Tom Lane wrote: > Jacob Champion <[email protected]> writes: >> On Mon, Feb 23, 2026 at 2:18 PM Tom Lane <[email protected]> wrote: >>> Either that or we decide that it's time to throw 9.2 support >>> overboard (looks like 9.3 and up are fine). > >> Well, while I was hacking on a patch I realized that 9.3 (all the way >> up to 10) is only okay if you're running a sufficiently patched >> version. PG11 is the first to support negotiation for the whole >> release line. > > Hmm ... and of course the whole point of this exercise is to be sure > we can pg_upgrade from those out-of-support versions.
I discussed this a bit on the hacking Discord last year, but IMHO we're reaching a good point to bump up pg_upgrade's oldest supported major version. I'll probably push to bump it to v10 for the v20 release so that we can remove many of the version-specific hacks we've built up over the years. Not to mention that the cross-version tests (the "export oldinstall" ones described in pg_upgrade's TESTING file, not the buildfarm ones) don't seem to work past v10 or so because they use various options that didn't exist or have since been renamed. Granted, this probably doesn't help the present issue... -- nathan
