Re: [HACKERS] Minor changes to Recovery related code

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: Simon Riggs <simon(at)2ndquadrant(dot)com>
Cc: pgsql-patches(at)postgresql(dot)org, "Florian G(dot) Pflug" <fgp(at)phlo(dot)org>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Subject: Re: [HACKERS] Minor changes to Recovery related code
Date: 2008-04-05 01:34:58
Message-ID: 200804050134.m351YwM00633@momjian.us
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Nice, applied. I only modified some of the documentation wording.

I was a little worried that statement_timeout might cancel
pg_stop_backup() _before_ it had gotten to waiting for the archive logs
to be saved, but based on what little code there is before that block, I
think we are OK.

---------------------------------------------------------------------------

Simon Riggs wrote:
> On Thu, 2008-03-27 at 17:34 +0000, Simon Riggs wrote:
> > Follow-up during March 2008 CommitFest
> >
> > On Thu, 2007-06-07 at 21:53 +0100, Simon Riggs wrote:
> > > On Sat, 2007-03-31 at 00:51 +0200, Florian G. Pflug wrote:
>
> > > - pg_stop_backup() will wait until the WAL file that ends the backup is
> > > safely archived, even if a failure to archive occurs. This is a change
> > > to current behaviour, but since it implements the originally *expected*
> > > behaviour IMHO it should be the default.
> >
> > The most straightforward thing is to make pg_stop_backup() wait as
> > described above.
> >
> > If people want it to timeout, they can use a statement_timeout as
> > suggested by Florian.
> >
> > This can be implemented by having the function poll in an infinite loop
> > for archive_status/LOG.done. Also, as Florian suggests, we should have
> > it output a WARNING message every 60 seconds.
> >
> > I'll write a patch now.
>
> Patch to implement waiting pg_stop_backup().
>
> Tested and ready to apply, includes docs.
>
> --
> Simon Riggs
> 2ndQuadrant http://www.2ndQuadrant.com
>
> PostgreSQL UK 2008 Conference: http://www.postgresql.org.uk

[ Attachment, skipping... ]

--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com

+ If your life is a hard drive, Christ can be your backup. +

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