Fault Symptom Quick Recovery Method
Storage LUN
performance issues
1. Check for FC link error codes on the FC switch
module. If error codes exist, run the porterrshow
command and determine the cause of the fault based
on the port mapping relationships.
● If any links between the switch modules and the
external switches are faulty, remove and reconnect
the optical cables and modules. If a link is still
faulty and spare components are available, replace
any related optical cables and modules and try
again.
● If a link between an HBA and switch module is
faulty, move the compute node to a working slot
to check whether the fault is caused by the HBA,
switch module, or backplane. Replace any faulty
modules as required.
2. Clear the error code count history, observe the error
codes for 10 minutes, test the performance, and
contact the storage vendor for quick fault recovery.
5.6.8 Switch Module Faults
Switch Module Quick Recovery Method
Rectify switch module faults depending on the symptoms.
For more fault symptoms and solutions, see the Computing Case Library. The Computing
Case Library is available only to Huawei engineers and partners.
Huawei Servers
Troubleshooting 5 Diagnosing and Rectifying Faults
Issue 20 (2020-09-25) Copyright © Huawei Technologies Co., Ltd. 106
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