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Re: Re: Backup and Recovery

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Re: Backup and Recovery
Date: 2001-07-04 15:04:56
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-hackers
> On Wed, Jul 04, 2001 at 10:37:57AM +0200, Zeugswetter Andreas SB wrote:
> > 
> > > I imagine a daemon extracting redo log entries from WAL segments, 
> > > asynchronously.  Mixing redo log entries into the WAL allows the WAL 
> > > to be the only synchronous disk writer in the system, a Good Thing.
> > 
> > This comes up periodically now. WAL currently already has all the info
> > that would be needed for redo (it actually has to). 
> The WAL has the information needed to take a binary table image
> from the checkpoint state to the last committed transaction.
> IIUC, it is meaningless in relation to a pg_dump image.

Also, I expect this will be completed for 7.2.

  Bruce Momjian                        |
  pgman(at)candle(dot)pha(dot)pa(dot)us               |  (610) 853-3000
  +  If your life is a hard drive,     |  830 Blythe Avenue
  +  Christ can be your backup.        |  Drexel Hill, Pennsylvania 19026

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