Re: Implementing incremental backup

> * Tatsuo Ishii (ishii@postgresql.org) wrote:
>> Yeah, at first I thought using WAL was a good idea.  However I realized
>> that the problem using WAL is we cannot backup unlogged tables because
>> they are not written to WAL.
> 
> Unlogged tables are also nuked on recovery, so I'm not sure why you
> think an incremental backup would help..  If you're recovering (even
> from a simple crash), unlogged tables are going to go away.

If my memory serves, unlogged tables are not nuked when PostgeSQL is
stopped by a planned shutdown (not by crash or by "pg_ctl -m i
stop"). If PostgreSQL works so, incremental backup should be able to
recover unlogged tables as well, at least people would expect so IMO.
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese: http://www.sraoss.co.jp