Heikki Linnakangas <heikki.linnakan...@enterprisedb.com> writes: > On 30.11.2010 06:57, Robert Haas wrote: >> I can't say I'm totally in love with any of these designs. Anyone >> else have any ideas, or any opinions about which one is best?
> Well, the design I've been pondering goes like this: Wouldn't it be easier and more robust to just consider VM bit changes to be part of the WAL-logged actions? That would include updating LSNs on VM pages and flushing VM pages to disk during checkpoint based on their LSN values. All of these other schemes seem too complicated and not provably correct. Of course, that'd mean doing the bit changes inside the critical sections for the related actions, so it's not a trivial change code-wise, but neither are these other ideas. regards, tom lane -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers