3.7.0 HP StorageWorks HP Scalable NAS File Serving Software administration guide - HP Scalable NAS 3.7 for Linux (AG513-96002, October 2009)

Display MPIO statistics
mxmpio also includes the following commands, which display various MPIO statistics.
See the mxmpio(8) man page and the HP Scalable NAS File Serving Software
command reference guide for details about these commands.
mpiostat
Display the number of transient errors for each target, and show the number of
failovers and fatal errors for each device.
mpioload
Display load information for each target and the PSD device, and show the
number of failovers and fatal errors for each device.
iostat
Display general I/O statistics for each device.
rawstat
Dump general I/O statistics for each device in raw format. The output is intended
for use in programs.
Other MPIO support
Enable the MPIO failover feature on QLogic drivers
QLogic device drivers have an MPIO failover feature. To use this feature, you will
need to enable it in the /etc/opt/hpcfs/fc_pcitable file and then reboot the
server.
Format of the fc_pcitable file
The /etc/opt/hpcfs/fc_pcitable file contains entries only for the drivers
installed on your system. By default, the entries in the file are commented out, as
indicated by the comment character (#). The file is used only if you add a new entry
to the file or modify a default entry (by removing the comment character and then
changing the appropriate values).
Each line in the file contains six fields, as shown in the following example for the
default qla2x00 driver:
0x1077 0x2200 qla2x00 scsi "" QLogic 2200 Adapter
Configure the SAN100