Release Notes Device Mapper Multipath Enablement Kit for HP StorageWorks Disk Arrays v4.2.0 (AA-RWF9G-TE, March 2009)

Backup the existing initrd image by executing the following command:a.
#mv /boot/initrd-<version no.>.img /boot/initrd-<version
no.>.img.old
b. Make a new initrd image by executing the following command:
#mkinitrd /boot/initrd-<version no.>.img `uname -r`
c. Edit the value for default parameter in /boot/grub/menu.lst file to boot with the
new initrd image.
• For other operating systems using the HP Qlogic drivers,
/opt/hp/src/hp_qla2x00src/make_initrd
3. Reboot the host.
Configuring Emulex HBA parameters
To configure the Emulex HBA parameters, complete the following steps:
1. For Emulex lpfc family of HBAs:
• In RHEL 4 hosts, edit the /etc/modprobe.conf file with the following values:
options lpfc
lpfc_nodev_tmo=14
lpfc_lun_queue_depth=16
lpfc_discovery_threads=32
• In SLES 9 hosts, edit the /etc/modprobe.conf.local file with the following values:
options lpfc
lpfc_nodev_tmo=14
lpfc_lun_queue_depth=16
lpfc_discovery_threads=32
• In SLES 10 hosts, edit the /etc/modprobe.conf.local file with the following values:
options lpfc
lpfc_nodev_tmo=28
lpfc_lun_queue_depth=16
lpfc_discovery_threads=32
• In RHEL 5 hosts, edit the /etc/modprobe.conf file with the following values:
options lpfc
lpfc_nodev_tmo=28
lpfc_lun_queue_depth=16
lpfc_discovery_threads=32
2. Rebuild the initrd by executing the following commands:
• For RHEL 5 U3 operating system using the native Emulex drivers, complete the following steps:
a. Backup the existing initrd image by executing the following command:
#mv /boot/initrd-<version no.>.img /boot/initrd-<version
no.>.img.old
b. Make a new initrd image by executing the following command:
#mkinitrd /boot/initrd-<version no.>.img `uname -r`
c. Edit the value for default parameter in /boot/grub/menu.lst file to boot with the
new initrd image.
• For other operating systems using the HP Emulex drivers, run the following command:
Device Mapper Multipath Enablement Kit for HP StorageWorks Disk Arrays v4.2.0 11