I just tested "postgres -C" on Postgres head, and got odd LOG output lines:
$ postgres -C shared_memory_size 143 --> 2022-05-02 13:08:06.445 EDT [1582048] LOG: database system is shut down $ postgres -C "wal_segment_size" 16777216 --> 2022-05-02 13:13:30.499 EDT [1584650] LOG: database system is shut down Are those last lines expected? -- Bruce Momjian <br...@momjian.us> https://momjian.us EDB https://enterprisedb.com Indecision is a decision. Inaction is an action. Mark Batterson