From owner-freebsd-hackers Thu Aug 15 09:47:35 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id JAA21572 for hackers-outgoing; Thu, 15 Aug 1996 09:47:35 -0700 (PDT) Received: from tdc.on.ca (tdc.on.ca [204.92.242.39]) by freefall.freebsd.org (8.7.5/8.7.3) with ESMTP id JAA21559 for ; Thu, 15 Aug 1996 09:47:32 -0700 (PDT) Received: (from martin@localhost) by tdc.on.ca (8.7.5/8.6.6) id MAA18692; Thu, 15 Aug 1996 12:40:55 -0400 (EDT) From: Martin Renters Message-Id: <199608151640.MAA18692@tdc.on.ca> Subject: Re: Nightmare. To: jgreco@brasil.moneng.mei.com (Joe Greco) Date: Thu, 15 Aug 1996 12:40:55 -0400 (EDT) Cc: phk@critter.tfs.com, narvi@haldjas.folklore.ee, jgreco@brasil.moneng.mei.com, darrylo@hpnmhjw.sr.hp.com, jkh@time.cdrom.com, hackers@freefall.freebsd.org In-Reply-To: <199608151541.KAA13861@brasil.moneng.mei.com> from "Joe Greco" at Aug 15, 96 10:41:43 am X-Mailer: ELM [version 2.4 PL24 ME8a] Content-Type: text Sender: owner-hackers@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk > > >> # mount /dev/st0 /mnt > > >> # cd /mnt > > >> (whirrrr chug) > > >> # (cd /usr; tar cvf - .) | tar xf - > > >> (whirrrr chug whirrrr chug whirrr chug for several years) > > > > I am 99% positive that newfs just won't work on a tape :-) But I suspect > it might be possible to hack it to work with creative use of dd off a > formatted hard disk..? (i.e. newfs the hard disk, dd to tape, maybe then > mount the tape?) HP used to do install tapes like this too. They had a block tape device which worked on 9-track tape devices. I guess they counted record marks to determine what block they were on and then issues FSR and BSR commands to the drive to position the tape. I suspect they also laid files out on the tape in the order in which the install program was going to use them. I don't know whether the UFS file layout algorithms help or hinder a filesystem on a sequential device.... :-) Martin