amusing stumble for the 6 to 10 byte checking code

[Matthew Jacob]

>
> That shouldn't have happened in response to a unit attention.  It should
> only happen if the SIM comes back with CAM_REQ_INVALID, or if the target
> comes back with an illegal request sense code.  So there may have been
> another intervening error that caused the switchover.

Yeah- but where?

>
> > (da0:isp1:0:0:0): WRITE(10). CDB: 2a 0 0 8 68 90 0 0 80 0
> > (da0:isp1:0:0:0): CAM Status: SCSI Status Error
> > (da0:isp1:0:0:0): SCSI Status: Check Condition
> > (da0:isp1:0:0:0): ILLEGAL REQUEST asc:24,0
> > (da0:isp1:0:0:0): Invalid field in CDB
> > (da0:isp1:0:0:0): Unretryable error
>
> Hmm.  Illegal field, and not invalid command operation code?  That's odd.
> What kind of drive is this?  The CDB looks valid at first glance...
>

Yeah, this is what's puzzling me. This is a normal FC drive. Puzzled...