From owner-freebsd-questions@FreeBSD.ORG Sun Apr 10 17:37:17 2005 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id A2DA316A4CE for ; Sun, 10 Apr 2005 17:37:17 +0000 (GMT) Received: from pandora.afflictions.org (asylum.afflictions.org [64.7.134.90]) by mx1.FreeBSD.org (Postfix) with ESMTP id 6995243D58 for ; Sun, 10 Apr 2005 17:37:15 +0000 (GMT) (envelope-from dgerow@afflictions.org) Received: from localhost (localhost [127.0.0.1]) by pandora.afflictions.org (Postfix) with ESMTP id E0A8C78C62; Sun, 10 Apr 2005 13:38:16 -0400 (EDT) Received: from pandora.afflictions.org ([127.0.0.1]) by localhost (pandora.afflictions.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 71293-04; Sun, 10 Apr 2005 13:38:11 -0400 (EDT) Received: from dementia.afflictions.org (dementia.afflictions.org [172.19.206.56]) by pandora.afflictions.org (Postfix) with ESMTP id E102378C35; Sun, 10 Apr 2005 13:38:10 -0400 (EDT) Received: by dementia.afflictions.org (Postfix, from userid 1001) id 809B933C60; Sun, 10 Apr 2005 13:37:18 -0400 (EDT) Date: Sun, 10 Apr 2005 13:37:18 -0400 From: Damian Gerow To: cpghost@cordula.ws Message-ID: <20050410173718.GX974@afflictions.org> References: <20050410013217.GP974@afflictions.org> <20050410014851.GR974@afflictions.org> <20050410030208.GA3072@fw.farid-hajji.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050410030208.GA3072@fw.farid-hajji.net> X-GPG-Fingerprint: B3D7 D901 A53A 1A99 BFD6 E6DF 9F3B 742B C288 9CC9 User-Agent: Mutt/1.5.9i X-Virus-Scanned: amavisd-new at pandora.afflictions.org cc: questions@freebsd.org Subject: Re: DVD Burning: ISO9660 vs. UDF X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 10 Apr 2005 17:37:17 -0000 Thus spake cpghost@cordula.ws (cpghost@cordula.ws) [09/04/05 23:34]: : If you're only backing up data, this is not so important, but if you're : backing up whole systems, you may want to consider a more pragmatic : approach: Of course. Were I backing up a whole system, chances are, I'd not be dealing with 3GB tarballs; in that case, ISO9660 should work just fine. : The real question here is: can you read UDF from a freshly installed : system without having to install additional programs, and without : having to restore from that very UDF backup? Or, asked differently: : can you actually READ your UDF backups when booting from the fixit CD? : : When doing backups, it's always best to be really conservative about : the formats you use. : : If your file is >1GB, you could always split(1) it into 1GB chunks : before running growisofs (be sure to document it in some way though, : e.g. fileN.1o4, fileN.2o4, fileN.3o4, fileN.4o4). split is a pretty handy utility. It's saved me more than once, and I /was/ considering using it again here. The question, in this case, was a little more academic: is it /possible/? If so, how? I didn't want to address the "Is it a good idea?" aspect of my approach. Luckily, in my case, the system I'm backing up is a, "Oh, we just got hacked, here's a few dumps for the entire system. Now we need to flatten and re-install." I'm backing up more for just-in-case purposes; I will never, ever be 'required' to pull the data from this backup. I may, one day down the road, be curious as to something that was on the system, but it's been about six months since the re-install, so the likelihood of me needing the data again is about as close to zero as you can get. So, again, this was more of a can-I-do-this question than a should-I-do-this question. But thanks for the pointers, anyhow: I had never used dump's tape length option (now, does dump for ext3 handle it as well...). - Damian