Find the Driver modules in VMware ESXi and ESX VMkernel

Some times we need to find, what are the driver modules loaded in the VMkernel, for example the ethernet and fiber channel HBA adapters driver modules. Some times we need to find the driver version, features and capabilities of the driver and its associated device. And many times we need set or change some advance parameters like

– Queue Depth for QLogic and Emulex HBAs

– Flow Control in network interface

Usage: esxcfg-module  <options>  <module>

-g         Get the options for a given module and whether it is loaded on boot.

-s         Set the options for a given module.                      

-e         Enable a given module, indicating it should be loaded on boot.
-d        Disable a given module, indicating it should not be loaded on boot.
-q        Query enabled modules options.

-u        Unload a module.

-l         List all loaded modules.
-I         Show Module Info.


1, Listing all modules on an ESX/ESXi 3.x, 4.x and 5.x:

To list all the modules currently loaded on an ESX/ESXi host:

esxcfg-module -l | grep <module name>

or simply

esxcfg-module -l | less (you can scroll up and down)

vmkload_mod  -l | grep <module name>


vmkload_mod -l | less


2, Query the system for the modules to load at boot. this will show the corresponding driver is configured to load during the boot of VMkernel

esxcfg-module -q | less


3, Listing all available options for a specific module on an ESX/ESXi host 

vmkload_mod –showinfo <module name>





About GK_RAJ

An enthusiastic IT person, with an intense passion towards Datacenter technologies. I am a VMware vExpert Title holder and working as a Technical Consultant, in Qatar. I am exposed to VMware vSphere, Storage, Bladecenters, Datacenter operations, Symantec Backup, Deduplication technologies and carry rich and diversified experience in these domains. I specialize in Designing & Consulting on VMware VSphere, the integration of Storage and Network Stacks to VSphere. With my experience, I help Organizations/Enterprises to achieve their CAPEX & OPEX savings, develop DR and BCP strategies, Consolidation services with Virtualization using VSphere, and prepare them to move to Cloud. In the meantime, I would like to share my knowledge and do a good contribution to the community. I am an Indian citizen, and have a Engineering degree in Electronics and Communication. I have certified in VCAP5-DCD, VCP-Cloud, VCP 4 & 5, MCITP, MCSE.

Posted on July 21, 2012, in ESX, ESXi, VMware. Bookmark the permalink. Leave a comment.

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