Xref: utzoo comp.periphs:3177 comp.unix.sysv386:939
Path: utzoo!attcan!uunet!virtech!cpcahil
From: cpcahil@virtech.uucp (Conor P. Cahill)
Newsgroups: comp.periphs,comp.unix.sysv386
Subject: Re: Backing up two computers on one tape with UUCP
Keywords: uucp backup tar
Message-ID: <1990Oct03.123829.5292@virtech.uucp>
Date: 3 Oct 90 12:38:29 GMT
References: <265@twg.wimsey.bc.ca>
Reply-To: cpcahil@virtech.UUCP (Conor P. Cahill)
Organization: Virtual Technologies Inc., Sterling VA
Lines: 33

In article <265@twg.wimsey.bc.ca> bill@twg.wimsey.bc.ca (Bill Irwin) writes:
>  [ discussion of trying to use uucp to back up one system to another 
>    systems tape drive deleted ]
>

Why not just develop your own home-grown serial file transfer mechanism
that would allow you to do the following:

	on your system with the disks, run the following command:

		find..... | tar -cvf - | remotesend ttyaA system

	Remotesend then opens the serial port, logs in on the other machine
	with a different login from uucp.  This new login will have a new
	login shell called remoterecv.  remotesend will wait for remotercv
	to start up (some form of minimal handshaking) and then start 
	sending all of it's standard input through the system.

	Remoterecv reads all of its input and then buffers the data (in big
	blocks, since the serial link will never be fast enought to keep 
	the tape streaming) and write it to the tape drive.

	To insure data integrity, the remotesend-remoterecv link could have
	a minimal packetizing protocol that ensures none of the packets are
	clobbered.
	
This is off the top of my head and you probably can punch a hole in it,
but you get the idea and it shouldn't be hard to implement.

-- 
Conor P. Cahill            (703)430-9247        Virtual Technologies, Inc.,
uunet!virtech!cpcahil                           46030 Manekin Plaza, Suite 160
                                                Sterling, VA 22170