Re: [HACKERS] Re: BUG #4796: Recovery followed by backup creates unrecoverable WAL-file

From: Simon Riggs <simon(at)2ndQuadrant(dot)com>
To: Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>
Cc: Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, Mikael Krantz <mk(at)zigamorph(dot)se>, pgsql-bugs(at)postgresql(dot)org, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: [HACKERS] Re: BUG #4796: Recovery followed by backup creates unrecoverable WAL-file
Date: 2009-05-15 13:16:35
Message-ID: 1242393395.3843.726.camel@ebony.2ndQuadrant
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On Fri, 2009-05-15 at 15:41 +0300, Heikki Linnakangas wrote:
> Simon Riggs wrote:
> > On Fri, 2009-05-15 at 12:56 +0100, Simon Riggs wrote:
> >
> >> There is no particular reason to send history files to the archive,
> >> since new ones are only ever generated at the end of an archive
> >> recovery.
> >
> > It also clears up a long standing confusion between backup history files
> > and timeline history files. The backup history file(s) do need to go to
> > the archive, whereas the timeline file(s) do not.
>
> (blush). Umm, and what is the distinction again? I thought they're the
> same thing..

Some additional code refers to "backup history" files when it means
backup label files, which are then easily confused with the timeline
history files.

--
Simon Riggs www.2ndQuadrant.com
PostgreSQL Training, Services and Support

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