From owner-freebsd-hackers  Fri Feb  9 13:49:52 2001
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Date: Fri, 09 Feb 2001 22:48:12 +0100
From: Andre Oppermann <oppermann@monzoon.net>
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To: Matt Dillon <dillon@earth.backplane.com>
Cc: Rik van Riel <riel@conectiva.com.br>,
	Mike Silbersack <silby@silby.com>,
	Poul-Henning Kamp <phk@critter.freebsd.dk>,
	Charles Randall <crandall@matchlogic.com>,
	Dan Phoenix <dphoenix@bravenet.com>,
	Alfred Perlstein <bright@wintelcom.net>,
	Jos Backus <josb@cncdsl.com>, freebsd-hackers@FreeBSD.ORG
Subject: Re: soft updates and qmail (RE: qmail IO problems)
References: <Pine.LNX.4.21.0102061555550.1535-100000@duckman.distro.conectiva> <3A805035.C71AAD5E@monzoon.net> <200102061943.f16Jhp365113@earth.backplane.com> <3A805938.96ED890D@monzoon.net> <200102062018.f16KIdx66146@earth.backplane.com> <200102090602.f1962cM19819@earth.backplane.com>
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Matt Dillon wrote:
> 
>     Well, after a long conversation with Mr Bernstein and Kirk it turns out
>     that all my blathering about a normal FFS mount being easily corruptable
>     due to a crash occuring during heavy disk I/O (e.g. from qmail) is so
>     much smoke.
> 
>     The fsync()/rename() combination that QMail does should be sufficient to
>     guarentee (baring a bug in kernel) that a crash will not result in any
>     lost mail queue files when using a normal FFS mount (without softupdates).
> 
>     However, I still recommend using softupdates.

I do. Is it safe there as well (from your point of view)?

-- 
Andre

>                                                 -Matt
> 
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