User guide

3–InfiniBand
®
Cluster Setup and Administration
Managing the ib_qib Driver
IB0054606-02 A 3-23
You can check to see if opensmd is configured to autostart by using the following
command (as a root user); if there is no output,
opensmd is not configured to
autostart:
# /sbin/chkconfig --list opensmd | grep -w on
Unload the Driver/Modules Manually
You can also unload the driver/modules manually without using
/etc/init.d/openibd. Use the following series of commands (as a root user):
# umount /ipathfs
# fuser -k /dev/ipath* /dev/infiniband/*
# lsmod | egrep ’^ib_|^rdma_|^iw_’ | xargs modprobe -r
ib_qib Driver Filesystem
The ib_qib driver supplies a filesystem for exporting certain binary statistics to
user applications. By default, this filesystem is mounted in the
/ipathfs directory
when the ib_qib script is invoked with the
start option (e.g. at system startup).
The filesystem is unmounted when the ib_qib script is invoked with the
stop
option (for example, at system shutdown).
Here is a sample layout of a system with two cards:
/ipathfs/0/flash
/ipathfs/0/port2counters
/ipathfs/0/port1counters
/ipathfs/0/portcounter_names
/ipathfs/0/counter_names
/ipathfs/0/counters
/ipathfs/driver_stats_names
/ipathfs/driver_stats
/ipathfs/1/flash
/ipathfs/1/port2counters
/ipathfs/1/port1counters
/ipathfs/1/portcounter_names