From owner-freebsd-fs Sat Sep 30 19: 5:23 2000 Delivered-To: freebsd-fs@freebsd.org Received: from mail.webmonster.de (datasink.webmonster.de [194.162.162.209]) by hub.freebsd.org (Postfix) with SMTP id 5E53737B66D for ; Sat, 30 Sep 2000 19:05:21 -0700 (PDT) Received: (qmail 84568 invoked by uid 1000); 1 Oct 2000 02:05:20 -0000 Date: Sun, 1 Oct 2000 04:05:20 +0200 From: "Karsten W. Rohrbach" To: Marius Bendiksen Cc: Dag-Erling Smorgrav , Dwight Tuinstra , freebsd-fs Subject: Re: Journaling Filesystems in bsd? (LFS, anyone?) Message-ID: <20001001040520.D83678@rohrbach.de> Reply-To: karsten@rohrbach.de References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0i In-Reply-To: ; from mbendiks@eunet.no on Mon, Sep 25, 2000 at 02:40:21PM +0200 X-Arbitrary-Number-Of-The-Day: 42 X-Sender: karsten@rohrbach.de Sender: owner-freebsd-fs@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Marius Bendiksen(mbendiks@eunet.no)@Mon, Sep 25, 2000 at 02:40:21PM +0200: [...] > more proper such filesystem. Or, get someone to port WAFL, and get NVRAM. this would be an interesting thing. with all the negative points of nvram you got a few good points in wafl design which might be of interest when it comes to lots of disks carrying one filesystem: a) metadata is contained in files b) those files are successors, referenced by the last on-volume snap c) spreading the file system over a bunch of disks is easy, also without lvm by design d) devices in a bunch can be different size e) you can hot-grow the filesystem (if your hardware supports hot-plug) f) you can have as many files as you wish (or limit in your hashing structure) on a volume g) linear write window over all devices is netapp's wafl concept patented somehow? /k -- > 71: 69 with two fingers up your ass. -- George Carlin KR433/KR11-RIPE -- http://www.webmonster.de -- ftp://ftp.webmonster.de To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-fs" in the body of the message