vCenter quick tip: Need to troubleshoot SIOC issues? here’s how to enable logging

In vSphere infrastructure storage as you probably know, I/O usage of virtual machines can be controlled by Storage I/O control (SIOC). In event of hitting issues good to enable logging to help resolve issues.

Here’s how to enable SIOC logging from the vSphere client:

  1. Enter your vSphere web client URL and log in.
  2. Click Host and Configuration tab.
  3. From the left-hand side column named Software, click on Advanced Settings.
  4. In the parameters list, click into the Misc section and select the Misc.SIOControlLogLevel parameter.
  5. By default, it is set to zero, which means it is disabled. To log everything, set the value to 7.
  6. Enter 7 in the field and click OK to close the pop-up box.
  7. You will now be able to see the logs in /var/log/vmkernel.

Happy troubleshooting 🙂


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