Hi all,

This patch is to add setting to send status packets after fsync to 
--status-interval of pg_receivexlog.

If -1 is specified to --status-interval, status packets is sent as soon as 
after fsync.

Others are the same as when 0 is specified to --status-interval.
When requested by the server, send the status packet. 

To use replication slot, and specify -1 to --fsync-interval.
As a result, simple WAL synchronous replication can be performed.

In simple WAL synchronization, it is possible to test the replication.
If there was F/O in synchronous replication, 
it is available in the substitute until standby is restored.


Furuya Osamu

Attachment: pg_receivexlog-fsync-feedback-v1.patch
Description: pg_receivexlog-fsync-feedback-v1.patch

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