Release Notes Device Mapper Multipath Enablement Kit for HP StorageWorks Disk Arrays v4.1.0 (AA-RWF9E-TE, November 2008)

Setting up HPDM
Multipath
Setting up HPDM
Multipath includes configuring HBA parameters for multipathed environment. This
involves the f
ollowing:
•Configuring QLogic HBA parameters
•Configur ing Emulex HBA parameters
Configuring QLogic HBA parameters
To configure the QLogic HBA parameters for QLogic 2xxx family of H BAs, complete the following steps:
1. Edit the /etc/modprobe.conf file in RHEL hosts and /etc/modprobe.conf.local
file in SLES hosts with the following values:
options qla2xxx ql2xmaxqdepth=16 qlport_down_retry=10 ql2xloginretrycount=30
ql2xfailover=0 ql2xlbType=1 ql2xautorestore=0xa0 ConfigRequired=0
2. Rebuild the initrd by executing the following script:
/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:
•InRHEL4hosts,editthe/etc/modprobe.conf file with the following values:
options lpfc
lpfc_nodev_tmo=14
lpfc_lun_queue_depth=16
lpfc_discovery_threads=32
•InSLES9hosts,editthe/etc/modprobe.conf.local file with the following values:
opti
ons lpfc
lpfc
_nodev_tmo=14
lpfc
_lun_queue_depth=16
lpfc
_discovery_threads=32
•InSLES10hosts,editthe/etc/modprobe.conf.local file with the following values:
options lpfc
lpfc_nodev_tmo=28
lpfc_lun_queue_depth=16
lpfc_discovery_threads=32
•InRHEL5hosts,editthe/etc/modprobe.conf file with the following values:
options lpfc
lpfc_nodev_tmo=28
lpfc_lun_queue_depth=16
lpfc_discovery_threads=32
2. Re
build the initrd by executing the following script:
/opt/hp/hp-lpfc/make_initrd
3. Reboot the host.
Device Mapper Multipath Enablement Kit for HP StorageWorks Disk Arrays v4.1.0
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