QLogic OFED+ Host Software User Guide, Rev. B

I
Useful Programs and Files
The most useful programs and files for debugging, and commands for common
tasks, are presented in the following sections. Many of these programs and files
have been discussed elsewhere in the documentation. This information is
summarized and repeated here for your convenience.
Check Cluster Homogeneity with ipath_checkout
Many problems can be attributed to the lack of homogeneity in the cluster
environment. Use the following items as a checklist for verifying homogeneity. A
difference in any one of these items in your cluster may cause problems:
• Kernels
• Distributions
• Versions of the QLogic boards
• Runtime and build environments
• .o files from different compilers
• Libraries
• Processor/link speeds
• PIO bandwidth
• MTUs
With the exception of finding any differences between the runtime and build
environments, ipath_checkout will pick up information on all the above items.
Other programs useful for verifying homogeneity are listed in Table I-1. More
details on ipath_checkout are in “ipath_checkout” on page I-10.
Restarting InfiniPath
When the driver status appears abnormal on any node, you can try restarting (as
a root user). Type:
# /etc/init.d/openibd restart
These two commands perform the same function as restart:
# /etc/init.d/openibd stop
# /etc/init.d/openibd start
Also check the /var/log/messages file for any abnormal activity.
D000046-005 B I-1