HP DDS/DAT tape drives UNIX, Linux and OpenVMS configuration guide (DW049-90930, May 2010)

For example, the st driver for tape listing would resemble the entry shown below. Also shown below
are two examples of HBA drivers—cciss driver (for HP SmartArray SAS HBAs) and mptsas driver
(for LSI SAS HBA):
Module Size Used by
st 38749 0
.
.
cciss 68484 3
.
.
mptsas 37321 0
If a particular driver module is not listed as above use the modprobe utility to load it. For example
if the st driver is missing, execute:
modprobe st
NOTE:
Loading of the st driver should happen naturally if your system is rebooted after attaching the drive.
Determining the attached devices
HBAs which use the cciss driver may require an explicit scan procedure to allow the attached tape
drive to be discovered after each reboot; execute the following from the command line (or from a
shell script):
for x in /proc/driver*/cciss/c*;do echo engage scsi > $x; done; dmesg
Check the contents of the file /proc/scsi/scsi to determine whether the system discovered the
tape drive at module load time:
cat /proc/scsi/scsi
Examine the contents for something like:
Host: SCSI0 Channel: 00 Id:00 Lun:00
Vendor: HP Model: DAT320 Rev: ZxxD
Type: Sequential-Access ANSI SCSI Revision 06
Look through the output of dmesg to discover which tape drive instance is used (st0 in the example
below) and to review the SCSI HBA driver (cciss in the extract below).
NOTE:
The exact format and style of the listing may vary with different Linux distributions and versions.
Linux (kernel 2.6x) servers and workstations30