From owner-freebsd-questions Wed Jul 3 4:42:25 2002 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 AF68437B400 for ; Wed, 3 Jul 2002 04:42:21 -0700 (PDT) Received: from xmxpita.excite.com (nat7.excitenetwork.com [63.236.75.9]) by mx1.FreeBSD.org (Postfix) with ESMTP id 15DF943E09 for ; Wed, 3 Jul 2002 04:42:21 -0700 (PDT) (envelope-from baszd-meg@excite.com) Received: by xmxpita.excite.com (Postfix, from userid 110) id 364BE8AEBD; Wed, 3 Jul 2002 07:42:18 -0400 (EDT) To: bts@babbleon.org Subject: Re: How to get back FreeBSD-dumped data with linux-restore. Received: from [193.158.99.90] by xprdmailfe2.nwk.excite.com via HTTP; Wed, 03 Jul 2002 07:42:18 EST Reply-To: baszd-meg@excite.com From: "baszd" MIME-Version: 1.0 X-Sender: baszd-meg@excite.com X-Mailer: PHP Importance: High X-Priority: 1 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: freebsd-questions@FreeBSD.ORG Message-Id: <20020703114218.364BE8AEBD@xmxpita.excite.com> Date: Wed, 3 Jul 2002 07:42:18 -0400 (EDT) Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Hi! > This varies from tool to tool, and you should read up on them, but Yeah, I should read about tar and pax. I wonder how to get back one file out of a whole tgz or whatever file. Creating an archive and redirect it via ssh to the tape shouldn't be very difficult. > what you use to do the backup. Since tapes are *NOT* random-access devices you > basically have to read everything from the start of the tape onward to > find > anything on the tape, but this is true regardless of the software tool > involved. Yes, of course. But it is confortable to work with dump/restore particular in interactive mode. I see my directories within seconds (if the tape position is right) and can choose the files I want to restore by marking them. > entirely i/o bound so that that other tools won't slow you down much. The question is more getting back files quickly rather than put them however on tape. > that yourself with a perl script or something. I'm using a simple bashscript wich is executed by cron. > You could use afs if you want a really high level of security. You must > somehow be getting the data for multiple machines now; how do you do > that? > Note also that if you wnat to go for ultimate security you an physically > move > the disk since each can mount the other's files directly. Ok, maybe afs. Never used it before. I have one FreeBSD fileserver and a few Debian ones. I back up like that: # ssh -l root fileserver "dump -h0 -a -u -f - /mnt/raid" > /dev/nst0 That works with FreeBSD and Linux, but -as said- I can't restore (the FreeBSD-dumps). Moving the RAID is not a good idea. It weighs about 20 kg ;) and is connected to a RAID-controllercard... > | That would be feasible, but somehow circumstantial. > > I'm not sure that I understand this one. Circumstantial means: I have to install FreeBSD and Debian new (including the settings and things which have to work). Furthermore I have to boot this or that OS depending on the file I need to restore. > | out the dump | dd-thing first and see how reliable it is. > > That's surely easiest if this is a one-shot problem. It was easy, but it seems to work unly with small amounts of data. I backed up my /tmp without flaws and my /mnt/raid dump leads to: Tape read error while restoring However I think I'll investigate in tar/pax and mounting that slice over the network. Thx! I'll post a proper solution soon (hopefully). Regards, bm. ------------------------------------------------ Join Excite! - http://www.excite.com The most personalized portal on the Web! To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message