>> Say I've got a second SCSI card in the machine and I am about to
>> disconnect - or just have disconnected - the cable to multiple
>> external devices.  It may be more convenient to just "detach 'em
>> all" than going through to figure out which ones to hit.
> How would the controller know that you have disconnected the cable ?

I'd tell it.  "scsictl /dev/scsibus1 detach any any", or some moral
equivalent thereof.

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