Re: Re: [COMMITTERS] pgsql: Make standby server continuously retry restoring the next WAL

Simon Riggs <simon@2ndquadrant.com>

From: Simon Riggs <simon@2ndQuadrant.com>

To: Fujii Masao <masao.fujii@gmail.com>

Cc: Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>, Dimitri Fontaine <dfontaine@hi-media.com>, PostgreSQL-development <pgsql-hackers@postgresql.org>

Date: 2010-02-12T14:34:29Z

Lists: pgsql-hackers

Attachments

archive_cleanup_from_pg_standby.patch (text/x-patch) patch

On Fri, 2010-02-12 at 12:54 +0000, Simon Riggs wrote:

> So I suggest that you have a new action that gets called after every
> checkpoint to clear down the archive. It will remove all files from the
> archive prior to %r. We can implement that as a sequence of unlink()s
> from within the server, or we can just call a script to do it. I prefer
> the latter approach. However we do it, we need something initiated by
> the server to maintain the archive and stop it from overflowing. 

Attached patch implements pg_standby for use as an
archive_cleanup_command, reusing existing code with new -a option.

e.g.

archive_cleanup_command = 'pg_standby -a -d /mnt/server/archiverdir %r'

Happy to add the archive_cleanup_command into main server as well, if
you like. Won't take long.

-- 
 Simon Riggs           www.2ndQuadrant.com