User Manual

TroubleshootingRev 4.3
Mellanox Technologies
111
9 Troubleshooting
9.1 InfiniBand Troubleshooting
Issue 1. The IB interfaces is not up after the first reboot after the installation process is com-
pleted.
Suggestion: To troubleshoot this issue, follow the steps bellow:
1. Check that the IB driver is running on all nodes by using 'vstat'. The vstat utility
located at <installation_directory>\tools, displays the status and capabilities of the
network adaptor card(s).
2. On the command line, enter “vstat” (use -h for options) to retrieve information
about one or more adapter ports. The field port_state will be equal to:
• PORT_DOWN - when there is no InfiniBand cable ("no link");
• PORT_INITIALIZED - when the port is connected to some other port ("physical link");
• PORT_ACTIVE - when the port is connected and OpenSM is running ("logical link")
• PORT_ARMED - when the port is connected to some other port ("physical link");
3.
Run OpenSM - see OpenSM operation instructions in the OpenSM section above.
4. Verify the status of ports by using vstat: All connected ports should report
"PORT_ACTIVE" state.
9.2 Ethernet Troubleshooting
Issue 1. The installation of MLNX_VPI for Windows fails with the following (or a similar)
error message:
This installation package is not supported by this processor type. Contact your product vendor."
Suggestion: This message is printed if you have downloaded and attempted to install an incor-
rect MSI -- for example, if you are trying to install a 64-bit MSI on a 32-bit machine (or vice
versa).
Issue 2. The performance is low.
Suggestion: This can be due to non-optimal system configuration. See the section "Perfor-
mance Tuning" to take advantage of Mellanox 10 GBit NIC performance.
Issue 3. The driver does no start.
Suggestion 1: This can happen due to an RSS configuration mismatch between the TCP stack
and the Mellanox adapter. To confirm this scenario, open the event log and look under "Sys-
tem" for the "mlx4eth5" or "mlx4eth6" source. If found, enable RSS as follows:
1. Run the following command: "netsh int tcp set global rss = enabled".
Suggestion 2: This is a less recommended suggestion, and will cause low performance. Dis-
able RSS on the adapter. To do this set RSS mode to "No Dynamic Rebalancing".
Issue 4. The Ethernet driver fails to start. In the Event log, under the mlx4_bus source, the fol-
lowing error message appears: RUN_FW command failed with error -22
Suggestion: The error message indicates that the wrong firmware image has been programmed
on the adapter card.
See http://www.mellanox.com > Support > Firmware Download