> I'm almost inclined to suggest that we not get next-LSN from WAL, but > by scanning all the pages in the main data store and computing the max > observed LSN. This is clearly not very attractive from a performance > standpoint, but it would avoid the obvious failure mode where you lost > some recent WAL segments along with pg_control.
If we follow this approach, what should be handling in case next-LSN is greater than last checkpoint record location read from WAL files. Currently I can see StratUpXLOG throws PANIC error in such situation. I think this can happen in case of missing some recent WAL segments. With Regards, Amit Kapila. -- Sent via pgsql-hackers mailing list (email@example.com) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers