Re: [PoC] pg_upgrade: allow to upgrade publisher node - Mailing list pgsql-hackers

On Fri, Sep 1, 2023 at 10:16 AM Hayato Kuroda (Fujitsu)
<kuroda.hayato@fujitsu.com> wrote:
>

+ /*
+ * Note: This must be done after doing the pg_resetwal command because
+ * pg_resetwal would remove required WALs.
+ */
+ if (count_old_cluster_logical_slots())
+ {
+ start_postmaster(&new_cluster, true);
+ create_logical_replication_slots();
+ stop_postmaster(false);
+ }

Can we combine this code with the code in the function
issue_warnings_and_set_wal_level()? That will avoid starting/stopping
the server for creating slots.

--
With Regards,
Amit Kapila.