Setting up the storage unit for zSeries hosts running Linux

This section provides instructions for setting up the storage unit for zSeries hosts running Linux.

You must first collect the following software configuration information to prepare a Linux system for accessing the storage unit through a fibre channel:

Host name of the server hosting the Linux system
Device address and CHPID of the FCP port that is attached to the Linux machine
Worldwide port name (WWPN) of the FCP port on the zSeries^®
Fibre-channel port on the storage unit
WWPN of the fibre-channel port on the storage unit

You can obtain that information from the hardware management console (HMC), the IBM^® System Storage™ DS Storage Manager, and the SAN switch. Figure 1 shows examples of the prerequisite information that you must obtain to run FCP Linux on the zSeries.

Figure 1. Example of prerequisite information for FCP Linux on zSeries

Linux hostname linuxa
CHPID of the FCP port on the z800 15
WWPN of the FCP port on the z800 50:05:07:64:01:40:01:7d
FC port on the storage unit Enclosure 3 Slot 1
WWPN of the FC port on the storage unit 50:05:07:63:00:c8:95:89

To set up the LUNs for use with your Linux system, you first must define the system to the storage unit. You can do this through the IBM System Storage DS Storage Manager.

Note: These instructions assume that you are familiar with the IBM System Storage DS Storage Manager.

Log on to the IBM System Storage DS Storage Manager and then in the navigation select, in order,Real-time manager > Manage hardware > Host systems.
From the Select Action drop-down list, select Create, then click Go.
From the General host information panel, complete the following fields for each fibre-channel host adapter. When you are finished, click OK.
- Host type
- Nickname
- Description
From the Define host ports panel, specify the host ports for this host. Click Add to add each host port to the defined host ports table.
From the Define host WWPN panel, specify the worldwide port names for the selected hosts. When finished, click Next.
From the Select storage images panel, specify the storage image for attachment. Click Add to add the storage image to the selected storage images table. When finished, click Next.
From the Specify storage image parameters panel, specify the following parameters for each storage image.
- Host attachment identifier
- Volume Group for host attachment
- Type of I/O port (any valid storage image I/O port or a specific I/O port)
Click Apply assignment button to apply the current attachment assignment. Use this button to go through this page for each host attachment identifier that you want to assign to the storage image. When you are finished, click OK.
From the Verification panel, verify the data that represents the new host attachments. When finished, click Finish.