Accessing tapes by bus ID

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7.1 LPAR mode z/VM guest

Use device nodes that are based on device bus-IDs to ensure that you access a tape device with a particular bus ID, regardless of the assigned device name.

Example

This example assumes that udev creates the following device nodes for a device with bus ID 0.0.01ac:
  • /dev/ntibm0
  • /dev/tape/0.0.01ac/non-rewinding
Instead of issuing: 
# mt -f /dev/ntibm0 unload
issue: 
# mt -f /dev/tape/0.0.01ac/non-rewinding unload