Re: PITR Phase 2 - Design Planning

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От Bruce Momjian
Тема Re: PITR Phase 2 - Design Planning
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Msg-id 200404262332.i3QNWHH04768@candle.pha.pa.us
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Ответ на Re: PITR Phase 2 - Design Planning  (Simon Riggs <simon@2ndquadrant.com>)
Ответы Re: PITR Phase 2 - Design Planning  (Richard Huxton <dev@archonet.com>)
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Simon Riggs wrote:
> On Mon, 2004-04-26 at 23:01, Alvaro Herrera wrote:
> > On Mon, Apr 26, 2004 at 05:05:41PM -0400, Bruce Momjian wrote:
> > > Simon Riggs wrote:
> > > > Transaction log files currently have timestamps, so that is
> > > > straightforward, but probably not the best we can do. We would
> > > > rollforward until the xlog file time > desired point in time.
> > > 
> > > I was thinking ---  how would someone know the time to use for restore?
> > 
> > I think there should be a way to get a TransactionId and restore up to
> > that point.  It'd be cool, but not required, if the system showed what
> > valid TransactionIds there are, and roughly what they did (the xlog
> > code already has "describers" everywhere AFAICS).
> 
> You're right, I think we should start by implementing the rollforward to
> a txnid before we consider the rollforward to a specified point-in-time.
> All the hooks for that are already there...

Yep, sounds like a plan.
--  Bruce Momjian                        |  http://candle.pha.pa.us pgman@candle.pha.pa.us               |  (610)
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Pennsylvania19073
 


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