0m vs 0mb

[Burt Buchen]

I am trying to figure out what these tape devices are and I understand that
/dev/rmt/0m is a tape device with rewind.
/dev/rmt/0mn is a tape device with no rewind

but I am unclear on the following:

/dev/rmt/0mb
/dev/rmt/0mnb

Lastly is there a device with an unload option,
(rewind and eject)?

[Steven E. Protter]

Try this eject code in your backup script.

See attachment

SEP

[Michael Steele_2 · Accepted solution]

Can't read your attachement.

#ioscan -fnC tape
Class I H/W Path Driver S/W State H/W Type Description
======================================================================
tape 0 10/2/2/0.3.0 stape CLAIMED DEVICE QUANTUM DLT7000
/dev/rmt/0m - AT&T format
/dev/rmt/0mb - Berkeley format
/dev/rmt/0mn - AT&T no rewind
/dev/rmt/0mnb - Berkeley no rewind
/dev/rmt/c5t3d0BEST - ATT commpressed
/dev/rmt/c5t3d0BESTb = Berk. compressed
/dev/rmt/c5t3d0BESTn - ATT, comp., no rew
/dev/rmt/c5t3d0BESTnb - Berk., comp., no rew

[A. Clay Stephenson]

The answers to your questions are one and the same: mt -- although in different man sections. Man 7 mt for your devive descriptions including what the Berkeley tape convention do and man 1 mt for a command that will rewind and (depending upon the tape drive) eject the medium -- offl.