Re: Simplifying wal_sync_method

On Mon, Aug 08, 2005 at 05:38:59PM -0400, Bruce Momjian wrote:
> Marko Kreen wrote:
> > On Mon, Aug 08, 2005 at 03:56:39PM -0400, Bruce Momjian wrote:
> > > Currently, here are the options available for wal_sync_method:
> > > 
> > >     #wal_sync_method = fsync        # the default varies across platforms:
> > >                                     # fsync, fdatasync, fsync_writethrough,
> > >                                     # open_sync, open_datasync
> > 
> > On same topic:
> > 
> >   http://archives.postgresql.org/pgsql-general/2005-07/msg00811.php
> > 
> > Why does win32 PostgreSQL allow data corruption by default?
> 
> It behaves the same on Unix as Win32, and if you have battery-backed
> cache, you don't need writethrough, so we don't have it as default.  I
> am going to write a section in the manual for 8.1 about these
> reliability issues.

For some reason I don't see "corruped database after crash"
reports on Unixen.  Why?

Also, why can't win32 be safe without battery-backed cache?
I can't see such requirement on other platforms.

-- 
marko