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Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!nntp.coast.net!news.kei.com!newsfeed.internetmci.com!news.msfc.nasa.gov!elroy.jpl.nasa.gov!louie.disney.com!messina From: messina@bvve.disney.com (Michael J. Messina) Newsgroups: comp.unix.bsd.freebsd.misc Subject: Re: Cannot Read a SCSI Tape Written by an Unknown Machine Date: 19 Jun 1996 02:08:56 GMT Organization: The Walt Disney Company Lines: 39 Message-ID: <4q7nfo$oa@louie.disney.com> References: <4q6fai$r79@uwm.edu> NNTP-Posting-Host: 153.7.153.96 X-Newsreader: TIN [version 1.2 PL2] Mark Chapman (chapman@allmalt.cs.uwm.edu) wrote: : I have a SCSI DAT tape that was written on an unknown machine type using : tar. The note says "no compression tar -xvf /dev/rmt/0". : When I try to read it, the kernel says the record is too big? : (ahc0:4:0): "WangDAT Model 3100 03.0" type 1 removable SCSI 2 : st0(ahc0:4:0): Sequential-Access density code 0x13, 512-byte blocks, : write-enabled : ROOT@interlock:/u3>tar -xv : tar: read error on /dev/rst0 : Input/output error : st0: 128874-byte record too big : ******************************** : Any hints? I can easily read/write other tapes. : I get the same message if I dd, cat, tar, or otherwise try to read the tape. I can't really give an answer, but can make suggestions. I mostly work on SGI's, but recently installed FreeBSD at home. I don't have a dat at home though. You are probably running into the typical unix-to-unix tape problems. It sounds like either 1) the tape was written at a blocksize that is different than your default you need to guess the correct blocksize and use the variable blocksize device. I don't know what it is called in FreeBSD. 2) the tape has a different byte ordering than your drive you need to use byte-swapping Sorry I can't give you more specific details, like I said I'm new to FreeBSD. mike -- Michael J. Messina Network and Systems Administrator | The Walt Disney Studios messina@bvve.disney.com | Buena Vista Visual Effects R.I.P.