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Gecko/20041020

Description of problem:
Under this kernel, the MTIOCPOS ioctl to a scsi tape device fails,
returning ENODEV.  This was working in the 681_FC3 kernel.

Version-Release number of selected component (if applicable):
kernel-2.6.9-1.724_FC3

How reproducible:
Always

Steps to Reproduce:
1. On a system with a scsi tape device that supports the scsi READ
POSITION command, and with a tape loaded in the drive, run "mt tell".

    

Actual Results:  The command reports "/dev/tape: No such device" and
exits with a failure return.

Expected Results:  The command should print "At block nnnn." and
return success.

Additional info:

mt-st-0.8-1
Drive is:
  Host: scsi0 Channel: 00 Id: 04 Lun: 00
  Vendor: ARCHIVE  Model: Python 04106-XXX Rev: 7350
  Type:   Sequential-Access                ANSI SCSI revision: 02

Under kernel 2.6.9-1.681_FC3, "mt tell" works properly.  I can't use
'strace' or a debugger to verify what is happening because the 724_FC3
kernel also breaks process tracing (bug 144070).  I had to recompile
'mt' with some debugging printf()s to help identify the problem.