Path: utzoo!attcan!uunet!samsung!uakari.primate.wisc.edu!sdd.hp.com!ucsd!pacbell.com!att!emory!wa4mei!holos0!Vernon
Newsgroups: comp.sys.ncr
Subject: Re: Whats wrong with cpio -oTV /dev/rtp
Message-ID: <9011121756.AA04682@cs.utexas.edu>
Date: 12 Nov 90 17:14:34 GMT
Lines: 35


Subject: Re: Whats wrong with cpio -oTV /dev/rtp
To: nigel@cnw01.storesys.coles.oz.au (Nigel Harwood)
Date: Mon, 12 Nov 90 11:12:30 CST
From: Vernon E. Hurdle <ssi600!vernon>
In-Reply-To: <1124@cnw01.storesys.coles.oz.au>; from "Nigel Harwood" at Nov 12, 90 11:19 am
X-Mailer: ELM [version 2.3 PL0]

> 
> Looking through the NCR SA scripts (Tower 32 UNIX V2 1 & 2) for tape
> backup/restore of files I found that they handle multiple volumes
> by building a list of the first set of files which will fit on the
> first tape and then the next etc.
> 
> Whats wrong with using cpio -oTV /dev/rtp ?
> 
> Is the only reason they did it that way because they wanted
> to customise and fully control the interface ?
> 
> Or is there something wrong with cpio -oTV /dev/rtp ?
> 
There is/was a problem with the  'TV'  options  when  writing  to
150MB  tape  drives.   The backup appeared to work just fine, but
when you tried to  restore,  the  file  on  the  break  contained
errors.   Also,  the  famous  'tape does not appear to be in cpio
format' message usually appeared after processing the file on the
break.

We have had no problems however using the  'TV'  option  on  45MB
tape drives and as far as that goes, we have had no problems with
the 'O and I' options in SysV.3 on any of the tape drives.

#################################################
# Vernon E. Hurdle (vernon@ssi600.lonestar.org) #
# Seay Systems, Inc.   Dallas, TX               #
#################################################