[9105] in linux-scsi channel archive
determining fixed/variable tape device
daemon@ATHENA.MIT.EDU (Timothy Shimmin)
Fri Jun 30 22:15:39 2000
From: tes@boing.melbourne.sgi.com (Timothy Shimmin)
Message-Id: <200007010208.MAA51103@boing.melbourne.sgi.com>
To: linux-scsi@vger.rutgers.edu (Scsi Linux),
linux-tape@vger.rutgers.edu (Tapes Linux)
Date: Sat, 1 Jul 2000 12:08:48 +1000 (EST)
MIME-Version: 1.0
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Hi Guys,
I have a few questions.
1) Is there a way to tell if a tape device is in variable sized
block mode or fixed block mode ?
- having a quick look at the st.c tape driver,
is it the case that a block-size (accessed using mt_dsreg)
of 0 indicates a variable sized device ?
- In IRIX one can tell by looking at the devicename.
2) I presume that there is no info kept on what the maximum block
size that a tape device handles ?
3) For looking at the status of the tape there semms to be
mt_gstat and GMT_* macros.
Is there any way of telling an early warning, EW, state ?
Thanks muchly,
Tim.
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