Log error: Unmanaged I/O workload detected

If you see the following error in your vSphere hosts’ log files

Unmanaged I/O workload detected on shared datastore running Storage I/O Control (SIOC) for congestion management

please consult https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1020651 . From this page, “It is triggered when Storage I/O Control (SIOC) detects that a workload that is not managed by SIOC is contributing to I/O congestion on a datastore that is managed by SIOC.”

If you do not use SIOC, are positive that there is no misconfiguration or unwanted activity and that your storage is in rude health, and you wish to turn off the logging of this event:

  1. Log into the vSphere web client.
  2. Browse to the datastore.
  3. Right-click on the datastore and choose Configure Storage I/O Control.
  4. Disable the statistics collection.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s