On Fri, 15 Jul 2022 at 08:49, Bruce Momjian <br...@momjian.us> wrote: > On Tue, Jul 5, 2022 at 08:02:33PM -0400, Tom Lane wrote: >> "Precondition" is an overly fancy word that makes things less clear >> not more so. Does it mean that setting wal_level = minimal will fail >> if you don't do these other things, or does it just mean that you >> won't be getting the absolute minimum WAL volume? If the former, >> I think it'd be better to say something like "To set wal_level to minimal, >> you must also set [these variables], which has the effect of disabling >> both WAL archiving and streaming replication." > > I have created the attached patch to try to improve this text.
IMO we can add the following sentence for wal_level description, since if wal_level = minimal and max_wal_senders > 0, we cannot start the database. To set wal_level to minimal, you must also set max_wal_senders to 0, which has the effect of disabling both WAL archiving and streaming replication. -- Regrads, Japin Li. ChengDu WenWu Information Technology Co.,Ltd.
