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Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!munnari.OZ.AU!news.hawaii.edu!ames!agate!theos.com!riscan.riscan.com!n1van.istar!van-bc!unixg.ubc.ca!news.bc.net!arclight.uoregon.edu!usenet.eel.ufl.edu!spool.mu.edu!howland.reston.ans.net!EU.net!main.Germany.EU.net!fu-berlin.de!irz401!orion.sax.de!uriah.heep!news From: j@uriah.heep.sax.de (J Wunsch) Newsgroups: comp.unix.bsd.freebsd.misc Subject: Re: Tape drive suggestions??? Date: 16 Jul 1996 10:49:14 GMT Organization: Private BSD site, Dresden Lines: 24 Message-ID: <4sfs3a$meq@uriah.heep.sax.de> References: <4ru18i$mll@mitzi.rsmas.miami.edu> <31E44224.41C6@ucdavis.edu> <4s49h4$cjt@saluki-news.wham.siu.edu> <4s7vvp$n33@uriah.heep.sax.de> <4sa8n8$cv0@saluki-news.wham.siu.edu> <4sajsr$eh@uriah.heep.sax.de> <4scjug$d24@saluki-news.wham.siu.edu> <4scnui$fog@saluki-news.wham.siu.edu> <4sdcug$fne@uriah.heep.sax.de> <31EABB12.41C67EA6@freehold.pc.cs.cmu.edu> Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) NNTP-Posting-Host: localhost.heep.sax.de Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Newsreader: knews 0.9.6 X-Phone: +49-351-2012 669 X-PGP-Fingerprint: DC 47 E6 E4 FF A6 E9 8F 93 21 E0 7D F9 12 D6 4E Matthew White <mwhite@freehold.pc.cs.cmu.edu> wrote: > > dump 0uBf 150000 - / | gzip | dd conv=osync | ft 'my compressed dump' > > Ack! Don't do this! Any error that occurs during reading or writing > this dump will render the entire backup useless. You are probably That's the problem of all compressed backups, unless you've got a compression program that allows for checkpointing. > better off using tar or cpio and using the '--block-compress' option. I don't see what this might buy you. --block-compress is nothing else than GNU bloat for " | gzip | dd conv=osync". Both are effectively equivalent, one is the Unix way, the other is the GNU way of expressing things. -- 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. ;-)