HPDM Multipath Support Matrix

System Feature	Supported hardware and software
Operating system versions	Red Hat Enterprise Linux 4 Update 5 Red Hat Enterprise Linux 4 Update 6 Red Hat Enterprise Linux 5 errata 2.6.18–8.1.6.eI5 or later Red Hat Enterprise Linux 5 Update 1 SuSE LINUX Enterprise Server 9 - Service Pack 3 errata 2.6.5–7.283 or later SuSE LINUX Enterprise Server 9 - Service Pack 4 SuSE LINUX Enterprise Server 10 SuSE LINUX Enterprise Server 10 - Service Pack 1
Host Bus Adapters (HBA)	Qlogic: FCA2214 PCI-X 1-port 2Gbps Fibre Channel FCA2214DC PCI-X 2-port 2Gbps Fibre Channel A7538A PCI-X 1-port 2Gbps Fibre Channel A6826A PCI-X 2-port 2Gbps Fibre Channel FC1142SR PCI-X 1-port 4Gbps Fibre Channel FC1242SR PCI-X 2-port 4Gbps Fibre Channel FC1143 PCI-X 1-port 4Gbps Fibre Channel FC1243 PCI-X 2-port 4Gbps Fibre Channel AB379A PCI-X 2-port 4Gbps Fibre Channel QMH 2462 4 Gbps Mezzanine for HP Blade Servers Emulex: A8002A/LPe1150 PCI-E 1-port 4Gbps Fibre Channel A8003A/LPe11002 PCI-E 2-port 4Gbps Fibre Channel AD167A PCI-X 2.0 1-port 4Gbps Fibre Channel AD168A PCI-X 2.0 2-port 4Gbps Fibre Channel
Servers	HP BladeSystem c-Class Server Blades, ProLiant x86, ProLiant AMD64, ProLiant EM64T Servers, Integrity Servers
Supported arrays	EVA 3000 (HSV101) VCS 4.007 or later EVA 5000 (HSV111) VCS 4.007 or later EVA 4000 (HSV200) XCS 5.110/6.100 or later EVA 6000 (HSV200) XCS 5.110/6.100 or later EVA 8000 (HSV210) XCS 5.110/6.100 or later EVA 4100 (HSV200) XCS 6.110 or later EVA 6100 (HSV200) XCS 6.110 or later EVA 8100 (HSV210) XCS 6.110 or later EVA 4400 (HSV300) XCS 0900 or later XP128 fw rev 21-14-18-00/00 or later NOTE: If you use XP128/1024, the system modes 140 and 293 must be switched on, otherwise the XP does not respond to a SCSI inquiry to code page 0x83 with a unique serial number (scsi_id tool). This prevents the HPDM Multipath from detecting the redundant paths. XP1024 fw rev 21-14-18-00/00 or later NOTE: If you use XP128/1024, the system modes 140 and 293 must be switched on, otherwise the XP does not respond to a SCSI inquiry to code page 0x83 with a unique serial number (scsi_id tool). This prevents the HPDM Multipath from detecting the redundant paths. XP10000 fw rev 50-07-30-00/00 or later XP12000 fw rev 50-09-34-00/00 or later XP 20000 fw rev 60-02-04-00/00 or later XP 24000 fw rev 60-02-04-00/00 or later MSA 1000/MSA 1500 fw rev 7.0.0 or later MSA 2000 Storage product family (MSA2012fc/MSA2212fc/MSA2012i) Provides support for iSCSI devices presented from supported EVA disk arrays.
HBA drivers	Emulex: Click here for 8.0.16.32 or later (for SLES9/RHEL 4.5/RHEL 4.6), 8.1.6.8 or later (for SLES10), 8.1.10.11 or later (for RHEL5/RHEL5.1/SLES10 SP1): http://h18006.www1.hp.com/products/storageworks/4gbpciehba/index.html Qlogic: Click here for Version 8.01.07.25 or later for all OS distributions: http://h18006.www1.hp.com/products/storageworks/fca2214/index.html

Prerequisites for HPDM Multipath Installation

Ensure the following RPMs are installed on the system before proceeding with HPDM Multipath installation:

• For RHEL 5/RHEL 5.1:
  libsysfs-devel, device-mapper >= 1.02.02-2, libselinux-devel, libsepol-devel, readline-devel, ncurses-devel
• For RHEL 4.6:
  sysfsutils-devel, device-mapper, libaio-devel
• For RHEL 4.5:
  sysfsutils-devel, device-mapper
• For SLES10 SP1:
  device-mapper, device-mapper-devel, readline-devel, sysfsutils
• For SLES10:
  device-mapper, readline-devel, sysfsutils
• For SLES9 SP3 /SLES9 SP4:
  readline-devel, device-mapper, ncurses-devel
• For all OS:
  aaa_base acl attr bash bind-utils bison bzip2 coreutils cpio cpp cracklib cvs cyrus-sasl db devs diffutils e2fsprogs file filesystem fillup findutils flex gawk gdbm-devel glibc glibc-devel glibc-locale gpm grep groff gzip info insserv kbd less libacl libattr libgcc libselinux libstdc++ libxcrypt m4 make man mktemp module-init-tools ncurses net-tools netcfg openldap2-client openssl pam pam-modules patch permissions popt procinfo procps psmisc pwdutils rcs readline sed strace syslogd sysvinit tar tcpd texinfo timezone unzip util-linux vim zlib zlib-devel autoconf automake binutils gcc gdbm gettext libtool perl rpm termcap udev

Installing/Upgrading HPDM Multipath Tools

To install or upgrade HPDM Multipath tools, complete the following steps:

1. Click here to download the HPDM Multipath tools installation package from the following HP website at: http://www.hp.com
2. Log in as root to the host system.
3. Copy the installation tar package to a temporary directory (for example, /tmp/HPDMmultipath).
4. To unbundle the package, enter the following commands:
   # cd /tmp/HPDMmultipath
   # tar -xvzf HPDMmultipath-4.0.0.tar.gz
   # cd HPDMmultipath-4.0.0
5. Verify that the directory contains the INSTALL.sh shell script, the SRPMS , README.txt, and the docs directories.
6. To install or upgrade HPDM Multipath tools software on the server, enter the following command:
   # ./INSTALL.sh
7. Follow the on-screen instructions to complete the installation.
8. When the installation is complete, enter the following command:
   #rpm -qa |grep multipath
9. Verify that the output lists the HPDMmultipath-tools-4.0.0- package.

Setting up HPDM Multipath

Setting up HPDM Multipath involves the following:

• Configuring QLogic HBA Parameters
• Configuring Emulex HBA parameters

Configuring QLogic HBA Parameters

You must configure the QLogic HBA parameters for HPDM Multipath. The HBA time outs are typically set up for non HPDM Multipath environments, where longer time outs are necessary. This is because the only alternative is to send an error to the application. However, with Multipath, errors such as cable failures must be intimated at the earliest so that the Multipath layer can quickly take action and redirect the I/O to another path.

To configure the QLogic HBA parameter, complete the following steps:

1. For QLogic 2xxx family of HBAs, edit the /etc/modprobe.conf file in RHEL4 or RHEL5 hosts and /etc/modprobe.conf.local file in SLES9/SLES10 hosts with the following values:
   options qla2xxx qlport_down_retry=10 ql2xfailover=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 parameter, complete the following steps:

1. For Emulex lpfc family of HBAs:
   • InRHEL4hosts, 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
   • InSLES9hosts,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
   • InSLES10hosts,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
   • InRHEL5hostsedit 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 script:
   /opt/hp/hp-lpfc/make_initrd
3. Reboot the host.