From owner-freebsd-current Sun Mar 22 17:54:50 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id RAA17926 for freebsd-current-outgoing; Sun, 22 Mar 1998 17:54:50 -0800 (PST) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from sendero.simon-shapiro.org (sendero-fddi.Simon-Shapiro.ORG [206.190.148.2]) by hub.freebsd.org (8.8.8/8.8.8) with SMTP id RAA17910 for ; Sun, 22 Mar 1998 17:54:41 -0800 (PST) (envelope-from shimon@simon-shapiro.org) Received: (qmail 6001 invoked from network); 23 Mar 1998 02:00:00 -0000 Received: from localhost.simon-shapiro.org (HELO sendero-fxp0.simon-shapiro.org) (@127.0.0.1) by localhost.simon-shapiro.org with SMTP; 23 Mar 1998 02:00:00 -0000 Message-ID: X-Mailer: XFMail 1.3-alpha-031798 [p0] on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: <19980322191253.31345@mcs.net> Date: Sun, 22 Mar 1998 18:00:00 -0800 (PST) Reply-To: shimon@simon-shapiro.org Organization: The Simon Shapiro Foundation From: Simon Shapiro To: Karl Denninger Subject: Re: CURRENT Kernel Status Cc: Terry Lambert , dyson@FreeBSD.ORG, root@danberlin.resnet.rochester.edu, current@FreeBSD.ORG Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On 23-Mar-98 Karl Denninger wrote: ... > The equivalent of IBM's jfs fixes that complaint rather thoroughly. > > I don't know if you've ever seen one of these come up after a crash, but > it is rather impressive to see the system roll forward (or back) the > transactions to the filesystem and come up in seconds - with 100GB+ of > data online. Yup. Seen that. Veritas claims to model that for Unix with a certain degree of success. > The other "cute" thing is that you can extend a jfs volume while the > system > is online; that's a very cute feature. Veritas does that too. I belive we may see such functionality for FreeBSD some day soon. > jfs is a monstrous pig for some uses however (its allocation size is > larger > than ffs) and for that reason its useless for things like news servers - > but > for regular applications its fantastic. > > I hated AIX when I had to work with it, but the one thing you simply > couldn't argue with was their jfs filesystem. I belive allocation resolution to be one of many tunable parameters. ---------- Sincerely Yours, Simon Shapiro Shimon@Simon-Shapiro.ORG Voice: 503.799.2313 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message