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Knowledge Base

An Red Hat4.8 Inherent Defect Led to a Not Responding Application Server

Publication Date:  2012-07-19  |   Views:  498  |   Downloads:  0  |   Author:  q00002810  |   Document ID:  EKB1000008651


Issue Description

Product and version information:

  • S5500T V100R001 V100R002
  • S5600T V100R001 V100R002
  • S6800T V100R001 V100R002
  • Application server operating system: Red Hat4 update 8 x86_64
  • HBA: QLogic QLE2562 (diver version:

When the modprobe -r qla2500 and modprobe qla2500 commands were run on the application server, the application server may fail to respond.

Alarm Information


Handling Process

Restart the application server.

Root Cause

A Red Hat4.8 application server may fail to respond when loading a driver. The same symptom occurred when it was interconnected with a peer vendor's storage device.
It is concluded that an Red Hat4.8 inherent defect led to a not responding application server when the application server attempted to load an HBA driver after the driver had been uninstalled.


Do not unnecessarily load or uninstall drivers to or from application servers. Restart the application server if it is not responding when loading/uninstalling a driver.