From owner-freebsd-hackers  Tue Feb  6  9: 6:19 2001
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To: Charles Randall <crandall@matchlogic.com>
Cc: "'Matt Dillon'" <dillon@earth.backplane.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) 
In-Reply-To: Your message of "Tue, 06 Feb 2001 09:51:59 MST."
             <5FE9B713CCCDD311A03400508B8B3013054E3F5D@bdr-xcln.is.matchlogic.com> 
Date: Tue, 06 Feb 2001 17:57:07 +0100
Message-ID: <35545.981478627@critter>
From: Poul-Henning Kamp <phk@critter.freebsd.dk>
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In message <5FE9B713CCCDD311A03400508B8B3013054E3F5D@bdr-xcln.is.matchlogic.com>, Charles Randall writes:
>The qmail FAQ specifically recommends against soft updates for the mail
>queue.
>
>http://cr.yp.to/qmail/faq/reliability.html#filesystems
>
>Is this incorrect?
>

It seems to indicate that qmail doesn't use fsync(2) as much as it should
do.  If that is true, then yes, softupdates would mean that a lot of things
which qmail (mistakenly) think has been written are in fact not on the
disk.

--
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.


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