RHV: adding a Storage Domain creates significant load and some VMs are Not Responding.

Solution Verified - Updated -


  • Adding a Storage Domains creates significant load on the storage
  • Adding a Storage Domain makes some guests become unresponsive
  • Mapping a new LUN and creating a new SD on them causes high cpu steal on some guests
  • The behaviour can be observed for about 60secs inside the VM


  • Red Hat Virtualization 4.x
    • Data-Center (Storage Pool) already contains dozens (30+) of Data Storage Domains
    • Block Storage (FibreChannel or iSCSI)
    • vdsm-4.19, vdsm-4.20

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Current Customers and Partners

Log in for full access

Log In

New to Red Hat?

Learn more about Red Hat subscriptions

Using a Red Hat product through a public cloud?

How to access this content