Right now, pg_receivexlog sets: replymsg->write = InvalidXLogRecPtr; replymsg->flush = InvalidXLogRecPtr; replymsg->apply = InvalidXLogRecPtr;
when it sends it's status updates. I'm thinking it sohuld set replymsg->write = blockpos instad. Why? That way you can see in pg_stat_replication what has actually been received by pg_receivexlog - not just what we last sent. This can be useful in combination with an archive_command that can block WAL recycling until it has been saved to the standby. And it would be useful as a general monitoring thing as well. I think the original reason was that it shouldn't interefer with synchronous replication - but it does take away a fairly useful usecase... -- Magnus Hagander Me: http://www.hagander.net/ Work: http://www.redpill-linpro.com/ -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers