Device Mapper Multipath Enablement Kit for HP StorageWorks Disk Arrays v4.2.1 release notes (AA-RWF9H-TE, March 2009)

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Device Mapper Multipath Enablement

Kit for HP StorageWorks Disk Arrays

v4.2.1 release notes

Part number: AA-RWF9H-TE

First edition: March 2009

Summary of content (11 pages)

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Device Mapper Multipath Enablement Kit for HP StorageWorks Disk Arrays v4.2.
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Overview This release notes discusses the recent product information about HP Device Mapper Multipath (HPDM Multipath) Enablement Kit for HP StorageWorks Disk Arrays v4.2.1. This incremental release is to support SUSE Linux Enterprise Server 11 operating system.
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NOTE: For details on multipathing support for SAN Boot environment, see the Booting Linux x86 and x86_64 systems from a Storage Area Network with Device Mapper Multipath document available at: http://h18006.www1.hp.com/storage/networking/bootsan.html What's new HPDM Multipath 4.2.1 provides the following additional feature: • Provides support for SUSE Linux Enterprise Server 11 NOTE: For more information on operating systems supported with HP StorageWorks Disk Arrays, see the SPOCK website: www.hp.
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EVA4000 (HSV200) XCS 5.110/6.200 or later EVA6000 (HSV200) XCS 5.110/6.200 or later EVA8000 (HSV210) XCS 5.110/6.200 or later EVA4100 (HSV200) XCS 6.200 or later EVA6100 (HSV200) XCS 6.200 or later EVA8100 (HSV210) XCS 6.
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• If you do not find the /etc/multipath.conf file, copy the conf/multipath.conf.HPTemplate.SLES11 template to /etc/multipath.conf file by executing the following command: #cp conf/multipath.conf.HPTemplate.SLES11 /etc/multipath.conf • If the /etc/multipath.conf file is already present, edit the file with the recommended device parameter values. For more details on recommended device parameter values, see Recommended device parameter values. 6.
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For XP device { vendor product path_grouping_policy getuid_callout path_selector rr_weight path_checker hardware_handler failback no_path_retry rr_min_io "HP" "OPEN-.
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For MSA2012fc/MSA2212fc/MSA2012i device { vendor product path_grouping_policy getuid_callout path_selector rr_weight path_checker hardware_handler failback no_path_retry rr_min_io "HP" "MSA2[02]12fc|MSA2012i" multibus "/lib/udev/scsi_id -g -u /dev/%n" "round-robin 0" uniform tur "0" immediate 18 100 } For MSA2312fc/MSA2324fc device { vendor product getuid_callout hardware_handler path_selector prio path_grouping_policy failback rr_weight no_path_retry rr_min_io path_checker "HP" "MSA2312fc|MSA2324fc" "/
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• Configuring Emulex HBA parameters • Configuring iSCSI parameters Configuring QLogic HBA parameters To configure the QLogic HBA parameters for QLogic 2xxx family of HBAs, complete the following steps: 1. Edit the /etc/modprobe.conf.local file in SLES hosts with the following value: options qla2xxx ql2xmaxqdepth=16 qlport_down_retry=10 ql2xloginretrycount=30 2. Rebuild the initrd by completing the following steps: a.
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Setting up Device Mapper Multipath daemon You must set the Device Mapper Multipath daemon to start at boot time. For RHEL hosts, complete the following steps to start the multipathd daemon at boot time: 1. Run the following commands to check if the daemon is configured to start at boot time: # chkconfig --list boot.device-mapper # chkconfig --list boot.multipath # chkconfig --list multipathd 2. Run the following commands to start the Device Mapper Multipath daemons: # chkconfig boot.
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• • • • Product model names and numbers Applicable error messages Operating system type and revision level Detailed, specific questions For continuous quality improvement, calls may be recorded or monitored. HP recommends that customers sign up online using the Subscriber's choice website: http://www.hp.