| From: | Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org> |
|---|---|
| To: | Magnus Hagander <mha(at)sollentuna(dot)net> |
| Cc: | Marko Kreen <marko(at)l-t(dot)ee>, Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Simplifying wal_sync_method |
| Date: | 2005-08-09 14:04:38 |
| Message-ID: | 20050809140438.GA19070@alvh.no-ip.org |
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| Lists: | pgsql-hackers |
On Tue, Aug 09, 2005 at 12:58:31PM +0200, Magnus Hagander wrote:
> > Now thinking about it, the guy had corrupt table, not WAL log.
> > How is WAL->tables synched? Does the 'wal_sync_method'
> > affect it or not?
>
> I *think* it always fsyncs() there as it is now, but I'm not 100% sure.
No. If fsync is off, then no fsync is done to the data files on
checkpoint either. (See mdsync() on src/backend/storage/smgr/md.c)
--
Alvaro Herrera (<alvherre[a]alvh.no-ip.org>)
A male gynecologist is like an auto mechanic who never owned a car.
(Carrie Snow)
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