| From: | "Mikheev, Vadim" <vmikheev(at)SECTORBASE(dot)COM> |
|---|---|
| To: | "'J(dot) R(dot) Nield'" <jrnield(at)usol(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Richard Tucker <richt(at)multera(dot)com>, Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>, PostgreSQL Hacker <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: PITR, checkpoint, and local relations |
| Date: | 2002-08-02 20:59:47 |
| Message-ID: | 3705826352029646A3E91C53F7189E325185D5@sectorbase2.sectorbase.com |
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| Lists: | pgsql-hackers |
> > (In particular, I *strongly* object to using the buffer
> manager at all
> > for reading files for backup. That's pretty much
> guaranteed to blow out
> > buffer cache. Use plain OS-level file reads. An OS
> directory search
> > will do fine for finding what you need to read, too.)
>
> How do you get atomic block copies otherwise?
You don't need it.
As long as whole block is saved in log on first after
checkpoint (you made before backup) change to block.
Vadim
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