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Re: doc: Improve wal_level and effective_wal_level GUC around logical replication

David G. Johnston <david.g.johnston@gmail.com>

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From: "David G. Johnston" <david.g.johnston@gmail.com>
To: Andreas Karlsson <andreas@proxel.se>
Cc: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2026-04-08T03:27:54Z
Lists: pgsql-hackers 
On Tuesday, April 7, 2026, Andreas Karlsson <andreas@proxel.se> wrote:

>
> Since effective_wal_level now exists, Logical Replication Getting Started
>> needs to be updated.
>>
>> Shouldn't it be:
>
> "Ensure that <xref linkend="guc-wal-level"/> is at least replica"
>

Given “at least” it is immaterial whether one inspects wal_level or
effective_wal_level.  It seems more intuitive to tell someone to look at
the value that represents what the system presently is using, not the
defined minimum level.

David J.