C Determining Linux Scsi Parameters; Determining Scsi Device Parameters On Linux - Oracle Secure Backup Installation And Configuration Manual

Determining Linux SCSI Parameters
For the Linux and UNIX platforms, if you do not know the
device, then you must determine them before you begin installation. This appendix
describes procedures for determining SCSI device parameters on Linux and UNIX.

Determining SCSI Device Parameters on Linux

To obtain tape device information on Linux, use the cat command to view the
contents of /proc/scsi/scsi. For example:
# cat /proc/scsi/scsi
Example C–1
tape devices.
Example C–1 Sample /proc/scsi/scsi Contents
Attached devices:
Host: scsi0 Channel: 00 Id: 02 Lun: 00
Vendor: IBM
Type:
Host: scsi0 Channel: 00 Id: 04 Lun: 00
Vendor: ADIC
Type:
A device of type Sequential-Access, such as the first tape device in the list, is a
tape drive. A device of type Medium Changer, such as the second tape device, is a
tape library.
For each tape device, the information needed is found in the line that reads:
Host: scsi0 Channel: 00 Id: 02 Lun: 00
The output can be interpreted as follows:
The host bus adapter number is the numeric part of the value scsin. For example,
■
for both tape devices in this output the host bus adapter number is 0.
The value for Channel is the SCSI bus address. For example, in this output the
■
SCSI bus address is 0.
The value for Id is the target ID. For example, in this output the ID of the tape
■
drive is 2, and the ID of the tape library is 4.
See Also: "Identifying and Configuring Linux Attach Points"
page 2-18 for information about configuring attach points for Linux
shows sample output for a host called storabck05 with two attached
Model: ULTRIUM-TD2
Sequential-Access
Model: Scalar 24
Medium Changer
parameters of a
SCSI
Rev: 4772
ANSI SCSI revision: 03
Rev: 237A
ANSI SCSI revision: 02
Determining Linux SCSI Parameters C-1
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tape
on