Date: Thu, 18 Jan 1996 20:40:17 -0500 (EST) From: "Jonathan M. Bresler" <jmb@freebsd.org> To: Daniel Leeds <cosmos@sponsor.octet.com> Cc: hackers@freebsd.org Subject: Re: dump help Message-ID: <Pine.BSF.3.91.960118202430.23971G-100000@Aspen.Woc.Atinc.COM> In-Reply-To: <199601181527.PAA02628@sponsor.octet.com>
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On Thu, 18 Jan 1996, 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. > > any kind soul wish to give me a step by step how-to on implementing this > under freebsd? decide which filesystems you want to create backups of. (use df to get at list of filesystems) determine the size of your backup media select a block size (say 10kB) exmine the output of /sbin/dmesg, find your backup device (hopefully st0) do some trial dumps /sbin/dump 0unBbf 1200000 10 /dev/nrst0 /dev/sd0a |||||| | | | | | |||||| | | | | | |||||| | | | | \___ the root |||||| | | | | filesystem on |||||| | | | | the first |||||| | | | | scsi disk |||||| | | | | |||||| | | | \___ the `norewind' scsi tape |||||| | | | |||||| | | \__ the backup device, the first (only?) |||||| | | scsi tape drive (arg for `f' option) |||||| | | |||||| | \___ the argument to `b' 10kBytes per block |||||| | |||||| \____ the number of blocks per tape. (1.2 GB here) |||||| arg for `B' |||||| |||||\______ the device flag (in place of the default) ||||\_______ the blocksize flag |||\________ the # of blocks flag ||\_________ dump should use wall(1) if there is a problem |\__________ update the /etc/dumpdates file \___________ dump EVERY thing to tape after each trial rewind the tape /usr/bin/mt -f /dev/rst0 rewind once you are happy with the result, create a little script to dump each filesystem in turn: Aspen:[32] more /root/dump.4mm #!/bin/sh echo "" >> dump.log echo "" >> dump.log echo "" >> dump.log /usr/bin/mt -f /dev/rst0 rewind /sbin/dump 0unBbf 1200000 10 /dev/nrst0 /dev/sd1a 2>&1 | tee -a /root/dump.log /sbin/dump 0unBbf 1200000 10 /dev/nrst0 /dev/sd1e 2>&1 | tee -a /root/dump.log /sbin/dump 0unBbf 1200000 10 /dev/rst0 /dev/sd1f 2>&1 | tee -a /root/dump.log /usr/bin/mt -f /dev/rst0 rewoffl (if you use the above dont forget to rotate /root/dump.log once in a while.) Jonathan M. Bresler FreeBSD Postmaster jmb@FreeBSD.ORG play go. ride bike. hack FreeBSD.--ah the good life i am moving to a new job. PLEASE USE: jmb@FreeBSD.ORG
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