From owner-freebsd-current Wed Oct 21 21:18:13 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id VAA24782 for freebsd-current-outgoing; Wed, 21 Oct 1998 21:18:13 -0700 (PDT) (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 VAA24775 for ; Wed, 21 Oct 1998 21:18:09 -0700 (PDT) (envelope-from grog@freebie.lemis.com) Received: from freebie.lemis.com (freebie.lemis.com [192.109.197.137]) by allegro.lemis.com (8.9.1/8.9.0) with ESMTP id NAA22054; Thu, 22 Oct 1998 13:47:32 +0930 (CST) Received: (from grog@localhost) by freebie.lemis.com (8.9.1/8.9.0) id NAA29155; Thu, 22 Oct 1998 13:47:31 +0930 (CST) Message-ID: <19981022134731.R1219@freebie.lemis.com> Date: Thu, 22 Oct 1998 13:47:31 +0930 From: Greg Lehey To: Bruce Albrecht Cc: Jaime Bozza , current@FreeBSD.ORG Subject: Re: Subdividing synthetic disks (was: newfs problems, more information:) References: <13868.3117.390224.376379@zuhause.zuhause.mn.org> <003801bdfc74$da58cae0$313d31cc@electron.nuc.net> <13869.12610.899877.506387@zuhause.zuhause.mn.org> <19981021180032.X21008@freebie.lemis.com> <13869.58445.435772.587309@zuhause.zuhause.mn.org> <19981022091922.A1219@freebie.lemis.com> <13870.45342.532896.964071@zuhause.zuhause.mn.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.91.1i In-Reply-To: <13870.45342.532896.964071@zuhause.zuhause.mn.org>; from Bruce Albrecht on Wed, Oct 21, 1998 at 11:14:22PM -0500 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 Wednesday, 21 October 1998 at 23:14:22 -0500, Bruce Albrecht wrote: > Greg Lehey writes: >> On Wednesday, 21 October 1998 at 8:40:29 -0500, Bruce Albrecht wrote: >>> Greg Lehey writes: >>>>> I never had any problem doing so. Here's my ccd's disklabel entry: >>>>> >>>>> (snip) >>>> >>>> Why do you want to do this? Would you still find a reason to do it >>>> with vinum? >>> >>> I have a 3 disk CCD with multiple partitions set up because it appears >>> to improve transfer rates by about 50% (IIRC) over having each >>> partition on a separate drive. I know you advocate using one very >>> large partition, but I prefer to keep my partitions small enough so >>> that I can dump any of them to a 90 meter DAT tape (roughly 2 GB) >>> without having to deal with tape swap. >> >> Hmm. Yes, that's a valid reason. It wouldn't be with vinum, because >> you could then just create individual volumes. > > So each vinum volume is a logical disk, and you still get the performance > boost from striping, but you get the other vinum features as well, such as > raid-5 and the ability to add additional space to a volume on the > fly? Correct. Note that ufs currently won't let you do much with the additional space, but it could be useful for swap. > In my case, I'd just create volumes that are 2 GB or less. Precisely. Greg -- See complete headers for address, home page and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message