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Configuring Drivers and Services
Managing the InfiniPath Driver
IB0056101-00 G.02 Preliminary 6-15
A
Managing the InfiniPath Driver
The startup script for ib_ipath is installed automatically as part of the
software installation, and normally does not need to be changed. It runs as a
system service.
The primary configuration file for the InfiniPath driver ib_ipath and other
modules and associated daemons, is:
/etc/infiniband/openib.conf
Normally, this configuration file is set up correctly at installation and the drivers are
loaded automatically during system boot once the RPMs have been installed.
However, the ib_ipath driver has several configuration variables that set
reserved buffers for the software, define events to create trace records, and set
the debug level.
If you are upgrading, your existing configuration files will not be overwritten.
NOTE:
To use 4K MTU, set the switch to have the same 4K default. If you are using
QLogic switches the following will apply:
For the Externally Managed 9024, use 4.2.2.0.3 firmware
(9024DDR4KMTU_firmware.emfw) for the 9024 EM. This has the 4K MTU
default, for use on fabrics where 4K MTU is required. If 4K MTU support is
not required, then the 4.2.2.0.2 DDR *.emfw file should be used for DDR
externally-managed switches. Use FastFabric to load the firmware on all the
9024s on the fabric.
For the 9000 Chassis, use the most recent 9000 code 4.2.4.0.1. The 4K
MTU support is in 9000 Chassis version 4.2.1.0.2 and later. For the 9000
chassis, when the FastFabric 4.3 (or later) chassis setup tool is used, the
user is asked what MTU they want. FastFabric (FF) can then set that MTU in
all the 9000 Internally managed switches. The change will take effect on
next reboot. Alternatively, for the Internally Managed 9000s, the
ismChassisSetMtu command-line interface (CLI) command can be used.
This should be executed on every switch and both hemispheres of the
9240s.
For reference, see the FastFabric Users Guide Version 4.3 and the
SIlverStorm 9000 CLI Reference Guide Version 4.2. Both are available from
the QLogic web site.
For other switches, see the vendors’ documentation.