Configuring The Storage Nodes; Installing The Storage Node Software - IBM eserver Cluster 1350 Installation And Service Manual

Table of Contents

Configuring the storage nodes

The procedure assumes that the following prerequisites have been met:

v A supported version of Linux is installed and running from a local drive. See

v The FAStT storage server is properly configured and connected to a host bus

v The FAStT drives in the storage server are configured into different RAID groups,

Because of the way the Red Hat Linux version 9 loads SCSI drivers and assigns

them to dev/sda and dev/sdb, problems can result if more than one SCSI host

adapter board (Adaptec SCSI controller for local drives or QLogic for Triton

connection) is installed on the system and you use the scsi_hostadapter alias.

When the system is restarted, the operating system detects the QLogic controller

before detecting the Adaptec controller, which will cause the system problems. To

avoid this problem, follow the Installing the storage node software and modify the

order of the contents of the etc/modules.conf file.

Installing the storage node software

Complete the following steps to install storage node software:

1. If you have not already done so, turn off the storage controllers or disconnect

2. For Red Hat Linux version 9, edit the etc/modules.conf file to put the host

IBM Eserver Cluster 1350 Installation and Service Guide

"Software version matrix" on page 27.

adapter.

storage groups, and LUN through the software that comes with the FAStT

storage server.

the Fibre-Channel cable running to each storage controller.

adapters in the correct order and to add the parameter scsi_mod max_scsi_luns

to the file.

Important:

v Because the system is running a modular kernel, the Adaptec SCSI device

driver (alias scsi_hostadapter aic7xxx) must be probed before any other SCSI

adapters so that the kernel will be able to find the root device during the

initialization phase. Also, the QLogic QLas device driver (alias

scsi_hostadapter2 qla2x00) must be the last SCSI host adapter listed in the

file.

v If there are other SCSI host adapter boards installed on the system and the

scsi_hostadapter alias is used, define a different alias for the qlogic Qla driver

and be sure to add it after the other SCSI modules so that the SCSI devices

names already in use are not renumbered the next time the system is

started. You can do this by appending a number at the end of the scsi_host

adapter word, for example, alias scsi_hostadaptern qla2x00 (where n is an

alphanumeric number from 1 through 9).

The original module.conf file might be similar to the following example:

alias eth0 e1000

alias scsi_hostadapter qla2x00

alias scsi_hostadapter1 aic7xxx

alias scsi_hostadapter2 ips

alias eth1 e1000

alias parport_lowlevel parport_pc

alias scsi_hostadapter3 aic7xxx

alias scsi_hostadapter4 aic7xxx

alias usb-controller usb-ohci

The modified module.conf file might be similar to the following example: