Re: Horribly slow pg_upgrade performance with many Large Objects

On Tue, Apr 8, 2025 at 8:39 PM Nathan Bossart <nathandbossart@gmail.com> wrote:
>
...
>
> I've also verified that the dependency information is carried over in
> upgrades to later versions (AFAICT all the supported ones).

If I remember correctly the change to not copying
pg_largeobject_metadata data file but instead moving LOs as part of
schema was done in v12 when oid,, which had been a system column in
v11, became a user column, so upgrade to v11 is likely also missing
the dependencies