EMC Qlogic QLA22xx Guía de instalación descargar pdf (Pagina 60)

Symmetrix Fibre Channel with Qlogic HBAs on Linux Hosts

Fabric Configurations

2. Proceed to Required Kernel Modifications on page 60 to modify and

compile the Linux kernel.

Required Kernel

Modifications

Make the following changes to the kernel.

Edit hosts.h

In order to see more than four SCSI hard drives, edit hosts.h as

follows:

cd /usr/src/linux/drivers/scsi

vi hosts.h

The text of hosts.h differs depending on the RedHat distribution

version:

◆ v6.2:

◆ v7.0:

Edit scsi.c

To allow the host to access and utilize more than eight SCSI LUNs,

edit scsi.c as follows:

cd /usr/src/linux/drivers/scsi

vi scsi.c

#ifdef CONFIG_SCSI_MULTI_LUN

static int max_scsi_luns = 8;

(Change to 128)

#else

static int max_scsi_luns = 1;

#endif

This can also be accomplished by appending a line to /etc/lilo.conf:

vi /etc/lilo.conf

Add this line:

append="max_scsi_luns=128"

#define SD_EXTRA_DEVS 40

#else

#define SD_EXTRA_DEVS 4

(Change to 128)

#endif

#define SD_EXTRA_DEVS

(Change to 128)

#define ST_EXTRA_DEVS 3

#define SR_EXTRA_DEVS 8

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EMC Qlogic QLA22xx Guía de instalación Pagina 60