ADIC Webcam 2.8 User Manual

Make sure the symbolic link is pointing to the correct kernel.

• If the symbolic link shows a kernel in the specified range (2.4.21.EL to 2.4.27.EL,)  continue 

with the next task.

• If the symbolic link is either missing or pointing to the source of a different kernel, the StorNext 

modules will either not install or not function.

• Mapping LUNs - Before installing StorNext, it is necessary to correctly map LUNs in the customer 

SAN. 

A LUN is assigned to each device (target) that is visible locally and over the SAN. The process 
of LUN mapping depends on many factors, including the operating system on which StorNext 
is running on, the type of SCSI card installed on the machine, and the type of FC HBA installed 
on the machine. 

For each HBA, check the vendor documentation to determine the operating system files that 
must be configured to correctly map LUNs to devices over the SAN. Configure the operating 
system file as indicated below:

•

Edit the /etc/sysconfig/rawdevices file and use the rpm and insmod 
commands to install the specific Fibre Channel HBA driver.

For additional requirements, see 

For assistance configuring the operating system file, contact ATAC. Refer to 

• Multiple LUN support - If your file system storage device uses non-zero SCSI Logical Unit 

Numbers (LUNs), configure the Red Hat Linux kernel to scan for all SCSI LUNs. By default, Red 
Hat Linux only scans for LUN 0. Use this procedure to configure the Linux kernel for multiple LUNs:

Change directories. Type:

cd /etc

In the /etc/modules.conf file, add the following line:

options scsi_mod max_scsi_luns=nLUNs

where nLUNs equals the number of LUNs required by your file system storage device. 

For example:

 

alias parport_lowlevel parport_pc

alias scsi_hostadapter aic7xxx

alias eth0 eepro100

alias eth1 e1000

alias scsi_hostadapter1 qla2300

options scsi_mod

options scsi_mod max_scsi_luns=128