HP 3PAR RedHat and Oracle Linux Implementation Guide

To change the qlport_down_retry parameter, issue the following command:
# scli
After the main menu comes up, select 3: HBA Parameters.
6. Then, from the HBA Parameters Menu, select the HBA that you want to change.
7. Then, from the HBA Parameters Menu, select 2: Configure HBA Parameters.
8. From the Configure Parameters Menu, select 13: Port Down Retry Count.
9. Then enter the value 10 for the Down Retry Count: if the HP 3PAR array is 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, enter 1.
10. Enter Port Down Retry Count [0-255] [30]: 10
11. From the Configure Parameters Menu, select 19: Commit Changes.
12. From the HBA Parameters Menu, select 4: Return to Previous Menu.
13. From the HBA Parameters Menu, you can select the next HBA port to repeat the steps to modify
its parameter.
14. After finishing, exit the scli utility.
15. To ensure that the change has taken effect, run the following command:
# cat /proc/scsi/qla2xxx/<hba instance> |grep "Port down retry"
Port down retry = 10
WARNING! Modifying the /etc/modprobe.conf file to make the QLogic HBA
qlport_down_retry parameter change and using the mkinitrd command to rebuild the
ramdisk as described in section 3.3.4 will cause the driver not to load and boot properly after
rebooting the host.
NOTE: The example above shows the QLogic port down retry setting when the RHEL
server is connecting to an HP 3PAR StoreServ Storage array running HP 3PAR OS 3.1.1 or
later.
NOTE: Command to rebuild the new ramdisk:
• For RHEL 6.x: dracut command
• For RHEL 5.x: mkinitrd command
132 Booting the Host from the HP 3PAR StoreServ Storage