| From: | Simon Riggs <simon(at)2ndquadrant(dot)com> |
|---|---|
| To: | Zeugswetter Andreas SB SD <ZeugswetterA(at)spardat(dot)at> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Point in Time Recovery |
| Date: | 2004-07-16 16:53:30 |
| Message-ID: | 1089996810.17493.9538.camel@stromboli |
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| Lists: | pgsql-hackers |
On Fri, 2004-07-16 at 16:58, Zeugswetter Andreas SB SD wrote:
> > >> Do we need a checkpoint after the archiving
> > >> starts but before the backup begins?
> >
> > > No.
> >
> > Actually yes.
>
> Sorry, I did incorrectly not connect 'archiving' with the backed up xlogs :-(
> So yes, you need one checkpoint after archiving starts. Imho turning on xlog
> archiving should issue such a checkpoint just to be sure.
>
By agreement, archive_mode can only be turned on at postmaster startup,
which means you always have a checkpoint - either because you shut it
down cleanly, or you didn't and it recovers, then writes one.
There is always something to start the rollforward.
So, non-issue.
Best regards, Simon Riggs
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