Scalar i40 tapechanger LUN appearing as a second tape drive

[Dirk-Willem van Gulik]

While having to re-surrect a Quantum Scalar i40 LTO5 unit - on a stock  11.1-RELEASE-p6  wired up with a external SAS cable to a HP Smart Array P222 I am seeing:

	camcontrol devlist 
	...
	<HP Ultrium 5-SCSI Z6KZ>           at scbus3 target 4 lun 0 (sa0,pass1)
	<HP Ultrium 5-SCSI Z6KZ>           at scbus3 target 4 lun 1 (pass2,sa1)
	....	

rather than the tape drive on LUN 0 and the tape changer on LUN 1 (the control path is to this drive - the serial number matches - and in like with the web interface details). 

dmesg shows:

	...
	sa0 at ciss1 bus 32 scbus3 target 4 lun 0 
	sa0: Serial Number C38CEFF000
	...
	sa1 at ciss1 bus 32 scbus3 target 4 lun 1
	...
	sa1: Serial Number C38CEFF000

The second drive (Serial C38CEFF004) is not wired up. Or if it is - it nicely shows up at the right (different) target and LUN0, without a second LUN.

Does this ring a bell with any one ? The kernel has ch(4), sa(4) and pass(4) compiled in statically (and is known to work with other tape changers/libraries).

Any hints appreciated,

Dw.