RE: [PoC] pg_upgrade: allow to upgrade publisher node

Dear Wang,

> I'm not sure if there is any reason to not expose this new option? Do we have
> concerns that users who use this new option by mistake may cause data
> inconsistencies?
>
> BTW, I think that all options of pg_dump (please see the array of long_options
> in the main function of the pg_dump.c file) are currently exposed to the user.

Apart from another database object, --logical-replication-slot-only does not provide
the "perfect" copy. As you might know, some attributes like xmin and restart_lsn
are not copied, it just creates similar replication slots which have same name,
plugin, and options. I think these things may be confused for users.

Moreover, I cannot come up with use-case which DBAs use the option alone.
If there is a good one, I can decide to remove the limitation.

Best Regards,
Hayato Kuroda
FUJITSU LIMITED