Date: Sun, 12 Sep 1999 21:54:19 +0200 From: Bernd Walter <ticso@cicely.de> To: "Matthew N. Dodd" <winter@jurai.net> Cc: Bernd Walter <ticso@cicely.de>, freebsd-fs@FreeBSD.ORG Subject: Re: Anyone working on HSM? Message-ID: <19990912215419.A38366@cicely8.cicely.de> In-Reply-To: <Pine.BSF.4.10.9909121501090.4890-100000@sasami.jurai.net>; from Matthew N. Dodd on Sun, Sep 12, 1999 at 03:01:58PM -0400 References: <19990912102737.B37555@cicely8.cicely.de> <Pine.BSF.4.10.9909121501090.4890-100000@sasami.jurai.net>
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On Sun, Sep 12, 1999 at 03:01:58PM -0400, Matthew N. Dodd wrote: > On Sun, 12 Sep 1999, Bernd Walter wrote: > > I'm in the situation to learn how the ffs code works to get mounted > > ffs-filesystems bigger and got some basic ideas about implementing HSM > > funktionality. > > I own a MO Jukebox so I have the needed hardware available. > > You might want to look at the code SGI released a while back; I'm not sure > that its and out and out HSM but it does have bits that you'll need. > XFS is a nice fs but I don't beleave it can come near the performance of a softupdated FFS. HSM does not sound to be very fast by principle but it's usefull to have a really fast FS at first stage if the stagedimensions are selected properly. The next point is that I found FFS with softupdates idealy for writing MOs if you don't want to use a streaming method. -- B.Walter COSMO-Project http://www.cosmo-project.de ticso@cicely.de Usergroup info@cosmo-project.de To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-fs" in the body of the message
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