Updating the flat file of an iSCSI target in AIX

Files Reference

targets File

Purpose

Defines iSCSI targets that will be accessed by the iSCSI software initiator.

Description

The iSCSI targets file defines the name and location of the iSCSI
targets that the iSCSI software initiator will attempt to access. This file
is read any time the iSCSI software initiator driver is loaded.

Any line in this file that begins with "#" will be treated as
a comment line and ignored. Other non-blank lines will define a target that
the iSCSI software initiator will access. The "/" character may
be used between fields as a line continuation character in order to make the
file more readable.

The shipped version of this file contains comments that precisely define
the format of the file. However, there are no default target names; the shipped
file contains only comments. In order to use the iSCSI software initiator,
the user must add target definitions to the file and then reload the iSCSI
driver by running cfgmgr or by rebooting the system.

Each target is defined by three or four fields, as follows:

HostNameOrAddress PortNumber iSCSIName

or

HostNameOrAddress PortNumber iSCSIName CHAPSecret

The fields that define the target are:

HostNameOrAddressThis is the TCP/IP location of the target. The location may be specified
by a TCP/IP address in dotted-decimal form, or by a host name which can be
resolved to a valid TCP/IP address. The format for the IP Address is taken
from RFC2373.
PortNumberThe TCP/IP port number on which the iSCSI target is listening. The standard
port number for iSCSI is 3260, but some targets may allow customizing the
port number, so this field must be specified.
iSCSINameThe iSCSI name of the target. This name must match the name defined
to the target. Note that the iSCSI name will be converted to contain all
lower case characters, in accordance with the iSCSI standards.
CHAPSecretThis optional field specifies the secret to be used by this initiator
if CHAP authentication is required. The secret is a text string enclosed
in double-quote characters. If this field is included in the target line,
the iSCSI software initiator will offer CHAP authentication to the target,
and if the target requests such authentication, this value will be used as
the secret during the authentication process. If the CHAPSecret field
is not included in the target definition, the initiator will attempt to log
in to the target without any authentication.

Examples

iSCSI Target without CHAP(MD5) authentication - Assume the target
is at address 192.168.3.2 and the valid port is 5003. The name of the target
is iqn.com.ibm-4125-23wwt26. The target line would look like the following:

192.168.3.2 5003 iqn.com.ibm-4125-23wwt26

iSCSI Target with CHAP(MD5) authentication - Assume the target
is at address 10.2.1.105 and the valid port is 3260. The name of the target
is iqn.com.ibm-k167-42.fc1a and the CHAP secret is "This is my password."
The target line would look like the following:

10.2.1.105 3260 iqn.com.ibm-k167-42.fc1a "This is my password."

iSCSI Target with CHAP(MD5) authentication and line continuation -
Assume the target is at address iscsi.fake.com and the valid port is 3260.
The name of the target is iqn.2003-01.com.ibm:00.fcd0ab21.shark128 and the
CHAP secret is "123ismysecretpassword.fc1b". The target line would look like
the following:

iscsi.fake.com 3260 iqn.2003-01.com.ibm:00.fcd0ab21.shark128 /
"123ismysecretpassword.fc1b"

Files

/etc/iscsi/targets

The iSCSI targets file.

Related Information

原文：http://publib.boulder.ibm.com/infocenter/pseries/v5r3/index.jsp?topic=/com.ibm.aix.baseadmn/doc/baseadmndita/updating_flat_file_iscsi_target.htm