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Date:      Thu, 21 Sep 2000 10:57:34 -0400 (EDT)
From:      Robert Watson <rwatson@freebsd.org>
To:        Michael Aronsen <mar@netcentralen.dk>
Cc:        "'fs@freebsd.org'" <fs@freebsd.org>
Subject:   Re: Journaling Filesystems in bsd?
Message-ID:  <Pine.NEB.3.96L.1000921105203.78178A-100000@fledge.watson.org>
In-Reply-To: <9164771DDCABD3118333005004E9446E204774@mother.netcentralen.dk>

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On Thu, 21 Sep 2000, Michael Aronsen wrote:

> Just wanted to know if there are any projects to get something
> like reiserfs to FreeBSD? 

At the June, 2000 USENIX technical conference, a journalled implementation
of the FFS file system for FreeBSD was described and used in a performance
comparison with Softupdates.  At the time, it was stated that this
journalled implementation would be made available to the FreeBSD
community, although a specific date was not set.  If you're interested in
the paper, it was by Margo Seltzer, Greg Ganger, Craig Soules, and
Christopher Stein, and was entitled, ``Journaling Verses Soft Updates:
Asynchronous Meta-data Protection in File Systems,'' and did a
comprehensive analysis of the performance and safety implications of
selecting various forms of file system meta-update protection (sync,
async, softupdates, async journalling, sync journalling).

As presumably Kirk would be the vehicle by which the journalling code
would be incorporated in the base system, and he's currently on vacation,
the practical answer is probably to sit tight until BSDCon when he
surfaces again :-). 

  Robert N M Watson 

robert@fledge.watson.org              http://www.watson.org/~robert/
PGP key fingerprint: AF B5 5F FF A6 4A 79 37  ED 5F 55 E9 58 04 6A B1
TIS Labs at Network Associates, Safeport Network Services





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