SUMMARY: mt status waits until ready.

From: Frank Pardo (
Date: Thu Aug 15 1996 - 15:22:22 CDT

Many thanks to the 3 gentlemen who responded.
Looks like this is a non-problem and can be


Date: Fri, 9 Aug 1996 10:54:07 -0400 (EDT)
Has anyone seen "mt status" on an Exabyte wait until the drive is ready,
instead of responding "Device busy"?


From: Casper Dik <casper@holland.Sun.COM>
Date: Fri, 09 Aug 1996 17:48:46 +0200
Device busy is typically returned if another process has the tape open,.
Hangs typically occur when loading a tape.

From: (Bob Rahe)
Date: Mon, 12 Aug 1996 10:26:25 EDT
  From my experience that is the way it works on SunOS. If the drive is
loading the mt command will hang waiting. It also waits for a bit if the
mt command is the first command to the unit - the OS does some sort of reset
which causes the tape to do some gyrations.
  On Solaris it seems to answer right away. Just the way the drivers were
written I guess.....

From: Tim Bradshaw <>
Date: 15 Aug 1996 15:37:01 +0100
I think this is what happens on exabytes (maybe on scsi cartridges as
well) -- the open on the device hangs until the drive is ready I
think. This probably depends on details of the device driver -- it's
not unique to Suns or to exabytes, although I have seen machines &
drives (1/2 in drives I think, probably on Suns) that didn't do this
but came back with busy immediately.

  Frank Pardo		<> 
  System Administrator 
  Transaction Information Systems
  New York City

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