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5 – Software Installation
Configuring the InfiniPath Drivers
5-12 IB0056101-00 G
S
Configuring the ib_ipath Driver
The ib_ipath module provides both low-level InfiniPath support and
management functions for OpenFabrics protocols. 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.The startup script for
ib_ipath is installed automatically as part of the software installation, and
normally does not need to be changed.
The primary configuration file for the InfiniPath drivers ib_ipath and
ipath_ether, and other modules and associated daemons, is:
/etc/sysconfig/infinipath
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. If
you are upgrading, your existing configuration files will not be overwritten.
The device files are:
/dev/ipath
/dev/ipath0, /dev/ipath1, ...
The numbered device files allow access to a specific InfiniPath unit.
See the
ib_ipath man page for more details.
Configuring the ipath_ether Network Interface
These instructions are for enabling TCP/IP networking over the InfiniPath link. To
enable IPoIB networking, see “Configuring the IPoIB Network Interface” on
page 5-17.
You must create a network device configuration file for the layered Ethernet
device on the QLogic adapter. This configuration file will resemble the
configuration files for the other Ethernet devices on the nodes.
Two slightly different procedures are given in the following sections for the ipath
configuration; one for Fedora/RHEL (see “ipath_ether Configuration on Red Hat”
on page 5-12) and one for SLES 10 (see “ipath_ether Configuration on SLES” on
page 5-14).
Many of the entries that are used in the configuration directions are explained in
the file
sysconfig.txt, located in the following directory:
/usr/share/doc/initscripts-*/sysconfig.txt
ipath_ether Configuration on Red Hat
The following procedure will cause the ipath_ether network interfaces to be
automatically configured the next time you reboot the system. These instructions
are for the Fedora 6, Red Hat Enterprise Linux 4 (RHEL4), and RHEL5
distributions.