Date: Wed, 23 Jul 2003 10:32:42 -0700 From: David Schultz <das@FreeBSD.ORG> To: Attila Nagy <bra@fsn.hu> Cc: current@FreeBSD.ORG Subject: Re: maildir with softupdates Message-ID: <20030723173242.GC14408@HAL9000.homeunix.com> In-Reply-To: <3F1E6456.9090400@fsn.hu> References: <3F1E6456.9090400@fsn.hu>
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On Wed, Jul 23, 2003, Attila Nagy wrote: > Hello, > > Is this statement still valid? > > "ext3 is unsafe for maildir, and with softupdates, so is ffs." > http://www.irbs.net/internet/postfix/0202/0358.html The statement is FUD; this is a topic that mailer people love to complain about. It's only true if your MTA doesn't call fsync() when it wants to guarantee that the file it just wrote is on stable storage. Most filesystems don't guaranteed 100% synchronous semantics for regular data unless you ask for them explicitly, due to the performance implications. The statement you quote used to be true for ext3 due to an inadequacy in its fsync() implementation, and I'm not sure if that was ever fixed.
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