Re: pg_start_backup without WAL archiving

From: Peter Eisentraut <peter_e(at)gmx(dot)net>
To: pgsql-admin(at)postgresql(dot)org
Cc: "Jeff Larsen" <jlar310(at)gmail(dot)com>
Subject: Re: pg_start_backup without WAL archiving
Date: 2007-11-25 16:04:22
Message-ID: 200711251704.23628.peter_e@gmx.net
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Jeff Larsen wrote:
> On Nov 25, 2007 8:24 AM, Peter Eisentraut <peter_e(at)gmx(dot)net> wrote:
> > Why is it not allowed to call pg_start_backup when WAL archiving is off?
> > Wouldn't this be useful as a discrete file system backup without PITR
> > capability?
>
> Because a file system level backup is no good unless the database is
> stopped, or you are using PITR.

You are begging the question. If I enable WAL archiving, make a base backup
to a safe place, and my data center goes up in flame immediately afterwards
without a WAL segment being archived, that base backup should still be
usable. Or maybe not. That's the question.

--
Peter Eisentraut
http://developer.postgresql.org/~petere/

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