Townshend Computer Tools DAT-Link - Page 17

2.4 Machine Sp ecic Instructions 13
st0 at si0 slave 32
st1 at si0 slave 40
st2 at si0 slave 24
st3 at si0 slave 16
The slave number above is 8 times the SCSI ID. Thus st0 is at SCSI ID 4, st1 is
at SCSI ID 5, st2 is at SCSI ID 3 and st3 is at SCSI ID 2. The minor device ID's
for the tap e devices are as follows:
crw-rw-rw- 1 root staff 18, 4 May 3 05:34 /dev/nrst0
crw-rw-rw- 1 root staff 18, 5 Apr 26 16:25 /dev/nrst1
crw-rw-rw- 1 root staff 18, 6 Apr 9 12:11 /dev/nrst2
crw-rw-rw- 1 root staff 18, 7 Apr 9 12:11 /dev/nrst3
crw-rw-rw- 1 root staff 18, 68 Apr 9 12:11 /dev/nrst4
crw-rw-rw- 1 root staff 18, 69 Jan 24 1992 /dev/nrst5
crw-rw-rw- 1 root staff 18, 70 Jan 24 1992 /dev/nrst6
crw-rw-rw- 1 root staff 18, 71 Jan 24 1992 /dev/nrst7
crw-rw-rw- 1 root staff 18, 12 Jan 24 1992 /dev/nrst8
crw-rw-rw- 1 root staff 18, 13 Jan 24 1992 /dev/nrst9
Thus, the mapping from SCSI ID's to minor devices is as follows:
SCSI ID Tape Device Ma jor,Minor Device
4 st0 (18,4)
5 st1 (18,5)
3 st2 (18,6)
2 st3 (18,7)
st4 (18,68)
st5 (18,69)
Thus, although (18,4) and (18,5) would corresp ond to SCSI ID's 4 and 5 resp ectively,
(18,6) and (18,7) would b e used to access SCSI ID's 3 and 2 resp ectively.
In general to determine the correct minor device numbers it is necessary to know
both the mapping from SCSI ID's to st nn numb ers contained in the kernel cong-
uration, and , the minor device numbers for each st nn device.
Conguring the Device Drivers - Solaris 2.x
Under Solaris 2. x , it is necessary to congure the devices directory using the fol-
lowing steps:
 Shutdown the computer.