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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