HP StorageWorks SAN Virtualization Services Platform administrator guide (5697-0109, July 2009)

Linux multipathing
NOTE:
Only the QLogic multipathing driver is supported at this time.
1. Go to http://h18006.www1.hp.com/products/sanworks/softwaredrivers/multipathoptions/
linux.html.
2. Select the QLogic driver.
3. Select the RedHat or SUSE Linux operating system.
4. Click Download for that product. Optionally, you can select the correct product description to
verify you made the correct selection, and download from that page.
5. Read and print the readme file included with the downloaded driver. The file contains installation
instructions and any limitations.
After installing the multipath drivers, it is a good idea to verify the paths between the server and the
DPM. Enter the following command:
[prompt]# hp_rescan –a
In response, you should see a path through both ports to every attached device.
Solaris multipathing
This procedure configures a Solaris server for use with SVSP:
1. Enable MPxIO:
a. The MPxIO driver is installed and disabled by default on Solaris 10 SPARC servers for Fibre
Channel devices. To enable MPxIO, type # stmsboot –e. A reboot is required.
b. The MPxIO driver is installed and enabled by default in Solaris 10 x86–based servers. To
verify, open /kernel/drv/fp.conf and check for the line: mpxio-disable=”no”;.
If it is not enabled, then change “no” to “yes.” Perform a reconfiguration reboot:
# touch /reconfigure
# shutdown -g0 -y -i6
2. Disable AutoFailback:
a. Open the /kernel/drv/scsi_vhci.conf file in a text editor.
b. Disable the automatic failback capability by changing the auto-failback entry to:
auto-failback="disable";
c. Save and exit the file.
d. Reboot the system with the # shutdown -g0 -y -i6 command.
3. Verify the system is working:
# cfgadm –al
# devfsadm –Cv
# format (to see all the volumes mapped)
Adding devices to the domain30