[comp.sys.sgi] bru

monger@maccs.dcss.mcmaster.ca (Patricia Monger) (08/01/90)

I have tried and failed to use bru to back up files from an Iris running
Irix 3.2.1 to any device attached to a sun 3/260 (1/4" 60 mbyte cartridge
tape drive, 1/2" reel tape drive, exabyte tape drive).  The iris is named
in the /.rhosts and /etc/hosts.equiv file on the sun.  I can do a remote
tar, using rsh, so I don't believe access to the remote host is the problem.
the error I get from bru is

bru: "<host>:/dev/rmt0": can't open archive: I/O error

Is this one of those things that everybody but me already knows doesn't work?
or already knows how to make work?
thanks, patricia monger 

olson@anchor.esd.sgi.com (Dave Olson) (08/03/90)

In <26B63823.16422@maccs.dcss.mcmaster.ca> monger@maccs.dcss.mcmaster.ca (Patricia Monger) writes:

| I have tried and failed to use bru to back up files from an Iris running
| Irix 3.2.1 to any device attached to a sun 3/260 (1/4" 60 mbyte cartridge
| tape drive, 1/2" reel tape drive, exabyte tape drive).  The iris is named
| in the /.rhosts and /etc/hosts.equiv file on the sun.  I can do a remote
| tar, using rsh, so I don't believe access to the remote host is the problem.
| the error I get from bru is
| 
| bru: "<host>:/dev/rmt0": can't open archive: I/O error
| 
| Is this one of those things that everybody but me already knows doesn't work?
| or already knows how to make work?
| thanks, patricia monger 

Giving the command line options you are using might help, but I suspect that
this is due to some incompatible changes in the rmt protocol that were made
in 3.2.  Unfortunately, this wasn't caught as a problem until it was too
late too fix it.  In 3.3, we still use the new features added in 3.2, but
we fall back to the 'standard' rmt protocol if we don't see an indication
that the remote understands the new protocol.

So, about all you can do until you upgrade is to fall back on something like:
	bru -cvfb 32 - files | rsh host dd bs=32 of=/dev/rmt0

(I'm a bit hazy on this, since it has been a while, so I may have erred on
the finer points.)
--

	Dave Olson

Life would be so much easier if we could just look at the source code.