*BSD News Article 93432


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From: ishizuka@isis.isl.ntt.co.jp (Masachika ISHIZUKA)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Question about dump
Date: 13 Apr 1997 02:32:42 GMT
Organization: NTT Information and Communication Systems Labs., Tokyo, Japan.
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Message-ID: <5ipgk0$fva@nttaip.isl.ntt.co.jp>
References: <5ighff$p1r@mitzi.rsmas.miami.edu>
NNTP-Posting-Host: isis.isl.ntt.co.jp
In-reply-to: ivan@nauplius.rsmas.miami.edu's message of 9 Apr 1997 16:51:59 GMT
Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:38990

| I am trying to back up my /usr partition to a tape drive using dump. 
| The tape drive is a SCSI Seagate TapeStor 8000 and the QIC-3080 tape
| holds 4 MB (without compression). 
|
| Well, if I use "dump -u0f /dev/rst0 /usr", dump asks for more tapes
| (14.13 tapes). But The tape cartrige holds 4 MB umcompressed so one tape
| (volume) should be more than enough.
|
| #superuser#> dump -u0f /dev/rst0 /usr

  Hi. You can specify the number of dump records per volume as
follows.

# dump u0Bf 4194304 /dev/rst0 /usr

  Or, You can set 'a' flag to bypass tape length considerations.

# dump u0af /dev/rst0 /usr

  Please type 'man dump' for more details.