HP StorageWorks Clustered File System 3.1.1 for Linux Installation Guide (May 2006)

Chapter 4: Install HP Clustered File System 16
These settings are standard QLogic driver settings but are found in the
following file:
/etc/opt/hpcfs/fc_pcitable
Standard QLogic config files and tools (for example, SAN Surfer) cannot
be used for driver settings. Instead, the above file is the location for this
purpose.
If the QLogic failover driver setting is disabled, it is possible to use the
built-it mxmpio command to configure multi pathing setting. Refer to the
HP StorageWorks Clustered File System Administration Guide for details
on this command.
5. Configure FC Switches for the Cluster
When certain problems occur on a server (for example, hardware
problems or the loss of cluster network communications), and the server
ceases to effectively coordinate and communicate with other servers in
the cluster, Clustered File System must remove the server’s access to
filesystems to preserve data integrity. This step is called fencing.
When you configure the cluster later in this procedure, you can select the
fencing method that you want to use:
• FibreChannel Switch-based fencing (also called “fabric fencing”).
When a server needs to be fenced, Clustered File System disables the
server’s access in the FibreChannel fabric.
• Web Management-Based Fencing via Server Reset/Shutdown (also
called “server-based fencing”). Clustered File System uses remote
management hardware on the server to reset or power off the server.
HP ProLiant servers (except the 1xx series) support this kind of
fencing using iLO remote management functionality.
For sites using fabric fencing, the FibreChannel switches must be
configured as described below to enable cluster operations across the
SAN. Configuring the FibreChannel switches is not required for sites
using server-based fencing. However, if the switches are configured as
described here, certain Clustered File System commands can return more
information.