HP 3PAR SUSE Linux Enterprise Implementation Guide

locations, because some parameters are in both locations, but some are in only one. For

example:

# cat /sys/module/lpfc/parameters/lpfc_devloss_tmo

14# cat /sys/class/scsi_host/host4/lpfc_devloss_tmo

14# cat /sys/module/lpfc/parameters/lpfc_discovery_threads

5. When the host comes back up after a reboot, verify that the Emulex HBA driver parameter

changes took effect by issuing the following commands:

# cd /sys/class/scsi_host/<host instance>

# ls

You view any of the HBA driver settings by displaying the contents of the HBA driver parameter

files using the cat command. For example:

# cat lpfc_devloss_tmo

# cat lpfc_topology

NOTE: The example above correctly shows the lpfc_devloss_tmo setting set to 14 when

connecting the SLES server to an HP 3PAR array running HP 3PAR OS 3.1.1 or later. However,

if the HP 3PAR array is running an HP 3PAR OS version earlier than 3.1.1, the setting should

be 1.

6. Check the contents of the /boot/grub/menu.lst with grub as the bootloader so that the

initrd maps to the correct ramdisk image. For example:

# vi menu.lst

default <label number>

timeout 8

. . .

title SUSE Linux Enterprise Server 11 - 2.6.27.19-5 (default)

root (hd0,1)

kernel /boot/vmlinuz-2.6.27.19-5-default root=/dev/disk/by-id/cciss-3600508b100104a3953553431574c000d-part2

resume=/dev/disk/by-id/cciss-3600508b100104a3953553431574c000d-part1 splash=silent crashkernel=256M-:128M@16M showopts

vga=0x317

initrd /boot/initrd-2.6.27.19-5-default

. . .

title Xen -- SUSE Linux Enterprise Server 11 - 2.6.27.19-5

root (hd0,1)

kernel /boot/xen.gz

module /boot/vmlinuz-2.6.27.19-5-xen root=/dev/disk/by-id/cciss-3600508b100104a3953553431574c000d-part2

resume=/dev/disk/by-id/cciss-3600508b100104a3953553431574c000d-part1 splash=silent showopts vga=0x317

module /boot/initrd-2.6.27.19-5-xen

Installing the QLogic HBA

Install the QLogic HBA(s) in the host based on the documentation provided with the HBAs and

host.

Building the QLogic Driver

NOTE: If you are using the in-box QLogic driver by the SUSE host installation, skip this section

and go to “Modifying the /etc/modprobe.conf.local File and Building the Ramdisk for QLogic”

(page 27).

If you are building the QLogic driver, follow these steps:

26 Configuring a Host with Fibre Channel