From owner-freebsd-current Sun Mar 22 17:56:01 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id RAA18180 for freebsd-current-outgoing; Sun, 22 Mar 1998 17:56:01 -0800 (PST) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from Kitten.mcs.com (Kitten.mcs.com [192.160.127.90]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id RAA18138; Sun, 22 Mar 1998 17:55:58 -0800 (PST) (envelope-from karl@Mars.mcs.net) Received: from Mars.mcs.net (karl@Mars.mcs.net [192.160.127.85]) by Kitten.mcs.com (8.8.7/8.8.2) with ESMTP id TAA00184; Sun, 22 Mar 1998 19:55:58 -0600 (CST) Received: (from karl@localhost) by Mars.mcs.net (8.8.7/8.8.2) id TAA15911; Sun, 22 Mar 1998 19:55:57 -0600 (CST) Message-ID: <19980322195557.03039@mcs.net> Date: Sun, 22 Mar 1998 19:55:57 -0600 From: Karl Denninger To: shimon@simon-shapiro.org Cc: Terry Lambert , dyson@FreeBSD.ORG, root@danberlin.resnet.rochester.edu, current@FreeBSD.ORG Subject: Re: CURRENT Kernel Status References: <19980322191253.31345@mcs.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.84 In-Reply-To: ; from Simon Shapiro on Sun, Mar 22, 1998 at 06:00:00PM -0800 Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Sun, Mar 22, 1998 at 06:00:00PM -0800, Simon Shapiro wrote: > > 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. Maybe it is now - I was using it back in the 3.0/3.1 days (~4 years ago+) and it wasn't rational to use it for the "gazillions of small files" case then. -- -- Karl Denninger (karl@MCS.Net)| MCSNet - Serving Chicagoland and Wisconsin http://www.mcs.net/ | T1's from $600 monthly / All Lines K56Flex/DOV | NEW! Corporate ISDN Prices dropped by up to 50%! Voice: [+1 312 803-MCS1 x219]| EXCLUSIVE NEW FEATURE ON ALL PERSONAL ACCOUNTS Fax: [+1 312 803-4929] | *SPAMBLOCK* Technology now included at no cost To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message