From owner-freebsd-hackers Fri Jan 19 00:22:57 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id AAA27872 for hackers-outgoing; Fri, 19 Jan 1996 00:22:57 -0800 (PST) Received: from irz301.inf.tu-dresden.de (irz301.inf.tu-dresden.de [141.76.1.11]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id AAA27826 for ; Fri, 19 Jan 1996 00:22:19 -0800 (PST) Received: from sax.sax.de by irz301.inf.tu-dresden.de (8.6.12/8.6.12-s1) with ESMTP id JAA11238; Fri, 19 Jan 1996 09:22:12 +0100 Received: by sax.sax.de (8.6.11/8.6.12-s1) with UUCP id JAA06032; Fri, 19 Jan 1996 09:22:12 +0100 Received: (from j@localhost) by uriah.heep.sax.de (8.7.3/8.6.9) id BAA00460; Fri, 19 Jan 1996 01:27:17 +0100 (MET) From: J Wunsch Message-Id: <199601190027.BAA00460@uriah.heep.sax.de> Subject: Re: dump help To: cosmos@sponsor.octet.com (Daniel Leeds) Date: Fri, 19 Jan 1996 01:27:16 +0100 (MET) Cc: hackers@FreeBSD.ORG Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) In-Reply-To: <199601181527.PAA02628@sponsor.octet.com> from "Daniel Leeds" at Jan 18, 96 03:27:37 pm X-Phone: +49-351-2012 669 X-Mailer: ELM [version 2.4 PL23] MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Sender: owner-hackers@FreeBSD.ORG Precedence: bulk As Daniel Leeds wrote: > > I need a daily backup and was told to use dump. I read the man page, but > dont exactly understand how to set this up. To make the initial dump of your /usr partition to a 150 MB QIC tape: dump 0uBf 150000 /dev/rst0 /usr to make the first incremental dump the next day dump 8uBf 150000 /dev/rst0 /usr to make the next incremental dump the other day dump 9uBf 150000 /dev/rst0 /usr where this dump was just the diff to the previous day, so you would require all three tapes to do a full restore. Alternatively, you could dump with level 8 (or less) the third day, thus eliminating the tape from the second day (only the level 0 tape plus the third day level 8 tape were needed for a full restore). As a rule of thumb: the lower the dump level, the more will be on the tapes. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)