From owner-freebsd-current Sun Mar 22 18:16:56 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id SAA23182 for freebsd-current-outgoing; Sun, 22 Mar 1998 18:16:56 -0800 (PST) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from allegro.lemis.com (allegro.lemis.com [192.109.197.134]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id SAA23177 for ; Sun, 22 Mar 1998 18:16:53 -0800 (PST) (envelope-from grog@lemis.com) Received: from freebie.lemis.com (freebie.lemis.com [192.109.197.137]) by allegro.lemis.com (8.8.7/8.8.5) with ESMTP id MAA18668; Mon, 23 Mar 1998 12:46:49 +1030 (CST) Received: (from grog@localhost) by freebie.lemis.com (8.8.8/8.8.7) id MAA09069; Mon, 23 Mar 1998 12:46:48 +1030 (CST) (envelope-from grog) Message-ID: <19980323124648.60096@freebie.lemis.com> Date: Mon, 23 Mar 1998 12:46:48 +1030 From: Greg Lehey To: shimon@simon-shapiro.org Cc: FreeBSD current users Subject: Re: CURRENT Kernel Status References: <19980322191253.31345@mcs.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.89i In-Reply-To: ; from Simon Shapiro on Sun, Mar 22, 1998 at 06:00:00PM -0800 WWW-Home-Page: http://www.lemis.com/~grog Organization: LEMIS, PO Box 460, Echunga SA 5153, Australia Phone: +61-8-8388-8286 Fax: +61-8-8388-8725 Mobile: +61-41-739-7062 Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Sun, 22 March 1998 at 18:00:00 -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. You can extend a vinum volume while it's online. That doesn't extend the file system, of course--that's more likely to be somebody else's project :-) >> 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. It certainly is in Veritas, and that makes sense. Greg To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message