Dell Emulex Family of Adapters - Manual (Page 849)

Emulex Drivers Version 10.2 for Linux User Manual P010081-01A Rev. A
3. Configuration
iSCSI Driver Configuration
849
iSCSI Driver Configuration
Open-iSCSI Support
Open-iSCSI is a high-performance, transport independent, multi-platform
implementation of Request for Comments (RFC) 3720.
The inbox Open-iSCSI driver is supported. However, for distributions of Linux
versions RHEL 5.x and for versions earlier than RHEL 6.3 and SLES 11 SP2, the inbox
driver does not support ISNS or iSCSI boot due to limitations in Open-iSCSI
distribution tools. If you need to use ISNS or iSCSI boot, use the out-of-box iSCSI driver
provided by Emulex.
For the inbox Open-iSCSI driver, use the Open-iSCSI tools to configure and manage
Open-iSCSI. For the Emulex out-of-box iSCSI driver, use the Emulex OneCommand
Manager application to configure and manage Open-iSCSI. The applications are not
interchangeable between the drivers.
The iscsiadm utility is a command-line tool allowing discovery of iSCSI targets; logging
into iSCSI targets; as well as, access and management of the open-iSCSI database on all
Linux installations. This utility presents a set of operations that you can perform on
iSCSI nodes, sessions, connections, and discovery records.
Discovering and Adding iSCSI Targets
When discovering and adding iSCSI targets, there are two sets of instructions
depending on the operating system:

The first set is for RHEL 6.x and SLES 11 SPx

The second set is for RHEL 5.x
RHEL 6.x and SLES 11 SPx
For RHEL 6.x and SLES 11 SPx, you can add iSCSI targets using a discovery phase first
(see the following section) or add them directly (see “Adding iSCSI Targets Directly
(without Discovering)” on page 853).
Discovering and Adding iSCSI Targets
The following steps are used to discover and add a target using the Ethernet adapter for
RHEL 6.x and SLES 11 SPx,. In this example, based on the IPL file flashed, the adapter
has two NIC functions and two iSCSI functions.
1. For the iSCSI function, set the IP address using the iSCSI Select utility.

The initiator IP is set to 192.168.65.99. This IP is set for the iSCSI function, but it
does not get set for the Ethernet interface.

The target portal IP is 192.168.65.196.
2. Using the iSCSI Select, iSCSI Target Configuration option, see if the targets can be
discovered, but do not add the targets yet.
3. The following command displays the specific host information: