3.5.1 Matrix Server Administration Guide

Chapter 18: SAN Maintenance 305

Change the HBA Queue Depth

To change the HBA queue depth, you will need to edit the

/etc/opt/polyserve/fc_pcitable file. In the file, locate the line for your HBA

driver. The following examples are for QLogic 2300 and Emulex 900

drivers.

#0x1077 0x2300 qla2300 scsi QLogic 2300 Adapter w/v6.01

driver

#0x10df 0xf900 lpfcdd scsi Emulex Lightpulse 9000

FibreChannel Adapter

Edit the line as follows:

• Remove the comment character (#) from the beginning of the line.

• Add a module parameter containing the queue depth that you

calculated earlier.

Following are some examples, where <value> is the number that you

calculated. (Your file may contain additional module parameters.)

For a QLogic HBA, add “ql2xmaxqdepth=<value>” after the fourth field

(scsi).

0x1077 0x2300 qla2300 scsi "ql2maxqdepth=<value>" QLogic

2300 Adapter w/v6.01 driver

For an Emulex HBA, add “lpfc_lun_queue_depth=<value>” after the

fourth field (scsi).

0x10df 0xf900 lpfcdd scsi "lpfc_lun_queue_depth=<value>"

Emulex Lightpulse 9000 FibreChannel Adapter

After editing the file, you will need to unload and then reload the HBA

driver:

# /etc/init.d/pmxs unload

# /etc/init.d/pmxs load