From owner-freebsd-questions Mon Dec 18 12:49:39 2000 From owner-freebsd-questions@FreeBSD.ORG Mon Dec 18 12:49:35 2000 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from freebsd.jazz-sax.com (adsl-64-163-65-116.dsl.snfc21.pacbell.net [64.163.65.116]) by hub.freebsd.org (Postfix) with ESMTP id CD68237B400 for ; Mon, 18 Dec 2000 12:49:34 -0800 (PST) Received: from jazz-sax.com (adsl-64-163-65-114.dsl.snfc21.pacbell.net [64.163.65.114]) by freebsd.jazz-sax.com (8.9.3/8.9.3) with ESMTP id EAA22224; Mon, 18 Dec 2000 04:51:14 -0800 (PST) (envelope-from ericdano@jazz-sax.com) Message-ID: <3A3E783B.877A230E@jazz-sax.com> Date: Mon, 18 Dec 2000 12:48:59 -0800 From: Eric Dannewitz Reply-To: ericdano@jazz-sax.com Organization: Jazz-Sax X-Mailer: Mozilla 4.76 [en] (Windows NT 5.0; U) X-Accept-Language: en,pdf MIME-Version: 1.0 To: "Ronald F. Guilmette" Cc: Christopher Farley , freebsd-questions@FreeBSD.ORG Subject: Re: Backing up a file system... How do I preserve the file flags? References: <13666.977171324@monkeys.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG "Ronald F. Guilmette" wrote: > In message <3A3E70E0.9AA146F8@jazz-sax.com>, you wrote: > > >Why not just RAID them? > > That's an interesting idea, but please tell me, can I ``just RAID'' > a pre-existing filesystem that is only present one one of the two > disk drives in question? That's not a problem. The other drive needs to be empty. > > It seems to me like it is a chicken-and-egg problem. To RAID these two > drives together, they should both have identical contents to begin with > correct? > No, the other disk needs to be the same size or larger. Do a "man vinum". What you want to do is a RAID 0 (mirror). > > But if I knew how to achieve that state, then my problem would already be > (mostly) solved. I mean hay! If I can replicate all of the data from > one drive to the other... well... that's essentially what I was trying > to do in the first place anyway, so if I can do that, then I don't need > to RAID anything. > Seems stupid to waste time with a backup script or something if your just going to use the other drive as basically a copy. RAID would take care of that and you'd never have to worry about it. > > P.S. Yes, I guess that I could perhaps just dd everything from one raw > disk device to the other, but I have trouble convining myself that doing > that is really a safe thing to do, in particular when the input raw disk > device is home to a live file system which is actually mounted at the > present moment. (What if some of the file systems's directory entires > change as I am doing the dd?) > Exactly what a RAID 0 would overcome, as it is a Mirror of the original drive. > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message -- Back up my hard disk? I can't find the reverse switch! Eric Dannewitz - Adventurer, saxophonist, good-timer (crook? quite possibly), clarinetist, manic self-publicist, part-time flautist(flutist?), macintosher, and often thought to be completely out to lunch. http://www.jazz-sax.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message