On 2013-09-04 07:57:15 -0700, Jeff Davis wrote: > XLogSaveBufferForHint() calls XLogCheckBuffer() but doesn't also look at > the full page writes setting (like in XLogInsert()). That means, if > checksums are enabled and full_page_writes is off, we'll still write > some full page images for checksums. I'd like to remedy that.
I don't think that's really as easy as it sounds without removing the ability to do base backups with full_page_writes = off. The interlocking that would require makes things complex... Personally I'd rather forbid enabling checkpoints in the combination with full_page_writes = off. That doesn't seem like a good idea to me and I am far from convinced it's actually going to work in all corner cases. Greetings, Andres Freund -- Andres Freund http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
