On Wed, Jul 3, 2024 at 10:09 AM Fujii Masao <masao.fu...@oss.nttdata.com> wrote: > The documentation states that "WAL summarization cannot be enabled when > wal_level is set to minimal." Therefore, at startup, the postmaster checks > these settings and exits with an error if they are not configured properly. > > However, I found that summarize_wal can still be enabled while the server is > running with wal_level=minimal. Please see the following example to cause > this situation. I think this is a bug.
Well, that's unfortunate. I suppose I got confused about whether summarize_wal could be changed without a server restart. I think the fix is probably not to cross-check the GUC values, but to put something in the summarizer that prevents it from generating a summary file if wal_level==minimal. Because an incremental backup based on such summaries would be no good. I won't be working the next couple of days due to the US holiday tomorrow, but I've made a note to look into this more next week. -- Robert Haas EDB: http://www.enterprisedb.com
