After setting common set of features in nova.conf instance migration still fails with 'Unacceptable CPU info: CPU doesn't have compatibility'

Solution In Progress - Updated -


  • Instance migration failing when trying to migrate instances from compute node with new CPU to compute node with old CPU.

  • Instance migration failing even after identifying and setting the lowest common set of features on both compute nodes. Read more about how to identify and set common set of features in nova.conf here in another KCS article.


  • Red Hat OpenStack Platform 13

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