Date: Wed, 13 Mar 2002 09:07:28 -0800 From: Alfred Perlstein <bright@mu.org> To: Parity Error <bootup@mail.ru> Cc: freebsd-fs@FreeBSD.org Subject: Re: metadata update durability ordering/soft updates Message-ID: <20020313170728.GM32410@elvis.mu.org> In-Reply-To: <E16l7YD-0001FG-00@f9.mail.ru> References: <E16l7YD-0001FG-00@f9.mail.ru>
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* Parity Error <bootup@mail.ru> [020313 04:08] wrote: > with soft-updates metadata updates are delayed write. I am wondering if, say > there > are two independent structural changes, one after another, and then a crash > happens. > Is there a possibility that the latter structural change got written to disk > before the > former due to some memory replacement policy ? > > could this affect the correctness of some applications ? Of course! This happens with almost any filesystem. This is why you have fsync(2). -Alfred To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-fs" in the body of the message
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