/dev/st0[lma] "modes"?

[Michael S. Peek]

Hello gurus,

I've been searching for information on how the linux kernel handles tape 
drives.  I have /dev/st0[lma] in my device directory, and the devices.txt file 
from the kernel source tree says:

 9 char SCSI tape devices
                  0 = /dev/st0          First SCSI tape, mode 0
                  1 = /dev/st1          Second SCSI tape, mode 0
                    ...
                 32 = /dev/st0l         First SCSI tape, mode 1
                 33 = /dev/st1l         Second SCSI tape, mode 1
                    ...
                 64 = /dev/st0m         First SCSI tape, mode 2
                 65 = /dev/st1m         Second SCSI tape, mode 2
                    ...
                 96 = /dev/st0a         First SCSI tape, mode 3
                 97 = /dev/st1a         Second SCSI tape, mode 3
                      ...

But what does "mode <x>" actually MEAN?

Michael Peek


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