On Sat, May 02, 2020 at 10:22:02AM -0700, Alan Perry via cctalk wrote: > >sc0 at vme24d16 200000 vec 0x40 > >sd0 at sc0 slave 0 > >si0: sc_cmd: scsi bus continuously busy > >sc0: resetting scsi bus > >sd1 at sc0 slave 1
Not that I know these particular devices, but is it at all possible one of the cables is in backwards? That sounds like the kind of behaviour you get with 50-pin SCSI if an IDC connector is upside down. But otherwise, this message presumably means the host controller is sensing BSY# asserted when it didn't expect it. So the first order of business would be to find out whether BSY# on the bus is genuinely low. If not, it must be a controller fault. If yes, disconnect the devices one at a time and see if the problem goes away. If it's still stuck low with no devices attached, the issue is either in the controller or termination. p.