Date: 14 May 2004 00:01:16 +0200 From: Christian Laursen <xi@borderworlds.dk> To: freebsd-questions@freebsd.org Subject: Re: The journalling file system saga Message-ID: <86isf0dm1f.fsf@borg.borderworlds.dk> In-Reply-To: <200405132247.33270.peter.schuller@infidyne.com> References: <40A32D0F.5050101@yahoo.co.uk> <200405132247.33270.peter.schuller@infidyne.com>
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Peter Schuller <peter.schuller@infidyne.com> writes:
[Problems with softupdates]
> Yet another problem is that an fsync() no longer guarantees that data is on
> disk, even with write caching disabled on the media. This doesn't break
> things like PostgreSQL provided that the order of writes is preserved, but it
> does break things like MTA:s that want to guarantee that critical data has
> been commited to persistent storage before signaling success to an external
> entity (SMTP client).
fsync(2) works as advertised with softupdates enabled so that shouldn't cause
any problems for applications that are written properly.
--
Med venlig hilsen
Christian Laursen
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