Path: utzoo!mnetor!uunet!steinmetz!davidsen
From: davidsen@steinmetz.steinmetz.UUCP (William E. Davidsen Jr)
Newsgroups: comp.unix.wizards
Subject: Re: Tar with multiple volumes
Message-ID: <8313@steinmetz.steinmetz.UUCP>
Date: 23 Dec 87 16:16:43 GMT
References: <341@tness1.UUCP>
Reply-To: davidsen@crdos1.UUCP (bill davidsen)
Organization: General Electric CRD, Schenectady, NY
Lines: 29

In article <341@tness1.UUCP> mechcrm@tness1.UUCP (Chet Murthy 713+680-8841) writes:
| 
| Hi.  I am in the process of writing a multiple-volume tar/cpio/backup
| utility.  i have already tried to build one into cpio, with moderate success -
| the code is so bloody (no flames, please) messy that there's no way to do it
| without a major rewrite.  So, I thought of hacking the public domain tar that
| was posted to comp.sources.unix recently.  This would have the advantage
| that I could freely distribute the mods.  Now, the questions:

About six months ago I posted a program set called "bundle" which
allowed multivolume on *any* program able to use stdin and stdout for
devices. Perhaps this would save you a bit of time. I'm getting a SysV
specific version going with shared memory which is somewhat faster, but
the released version should do what you want.

	tar cf - | bundle /dev/mt0 10000k 4k
	find . -print | cpio -oc | bundle /dev/mt0 10000k 4k

In a few months I will be releasing a version which also handles
multivolums on separate physical devices, allowing mounting of one tape
while the other is writing. A novel reinvention of 1962 GECOS (sic).

Let me know if you need this and can't find it. It was in
comp.sources.unix.

-- 
	bill davidsen		(wedu@ge-crd.arpa)
  {uunet | philabs | seismo}!steinmetz!crdos1!davidsen
"Stupidity, like virtue, is its own reward" -me