Instructions On Mkdev (Adm) For 3.2V5.X (Open Server) - ICP RS Series User Manual

H.4 Instructions on mkdev (ADM) for 3.2v5.x (Open
Server)
Whenever the program mkdev hd (ADM) is started, you will be asked for the coordinates of
the device you wish to install. The driver does not automatically display all devices con-
nected, so after the installation you will find a tool named GDTSCAN in the directory '/etc'.
The scanning can take up to several seconds, especially when there is more than one con-
troller in the system. The devices are displayed together with their host adapter number,
target-ID and LUN. These values are to be used in mkdev (ADM). Let's have a brief look at
how the HA-no., target-ID and LUN are determined. Please note that the UNIX driver al-
ways maps the first detected Host Drive with target-ID 0, LUN 0. Exactly this drive would be
used as a boot drive when the ICP Controller is to make the boot drive available. As an al-
ternative for the following "new" mapping method of SCO UNIX V/386 3.2v5.x, you may also
use the mapping as described in section H.3 (for 3.2v2.0 & 3.2v4.x). To enable this ("old")
mapping, change in the
/etc/conf/pack.d/gdth/space.c
gdth_mapping=1
gdth_mapping=0
Host adapter Number (HA)
The host adapter number assigned to the ICP Controller is derived from the PCI slot num-
ber of the ICP Controller. Therefore, if there is only one ICP Controller installed in the PCI
bus computer system, the host adapter number=0. If there are two ICP Controllers in-
stalled, the ICP Controller with the lower PCI Slot number is assigned host adapter number
0 and the ICP Controller with the higher PCI slot number is assigned host adapter 1. (Note:
After a cold boot, the ICP BIOS displays a couple of messages, each beginning with the
controller's PCI slot number, e.g. "[PCI 0/3] 4 MB RAM detected". The number after the '/' is
the slot number of the controller. This helps you to determine which is the order of the ICP
Controllers and which host adapter number is assigned to them by UNIX. See also chapter
B, Hardware Installation).
UNIX Target-ID and LUN
Target-IDs and LUNs for "Not Direct Access Devices" (devices like streamers, tapes and
CD-ROMs and therefore not configurable via ICPCON), are directly assigned to the SCSI-ID
and the channel of the ICP Controller. Host Drives are assigned in increasing order to the
free coordinates (bus number and target ID;LUN is always 0).
Configuration Example:
In the PCI computer are two ICP Controllers (HA 0 = 1st ICP, HA 1 = 2nd ICP), each with two
SCSI channels.
1 hard disk
1 hard disk
1 hard disk
1 Streamer
1 CD-ROM
1 DAT
as Host Drive no. 0 on HA0
as Host Drive no. 0 on HA1
as Host Drive no. 1 on HA1
SCSI-ID 2, LUN 0 on SCSI channel A of HA0
SCSI-ID 3, LUN 0 on SCSI channel B of HA0
SCSI-ID 2, LUN 0 on SCSI channel A of HA1
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