Instance can't be restarted - Error in the logs shows "cannot acquire state change lock (held by monitor=remoteDispatchDomainBlockJobAbort)"

Solution Verified - Updated -


A failed operation like a snapshot on the instance can leave it in an unresponsive state.

If you try to hard reboot it you can see the following error in the logs:

2021-01-20 10:38:04.111 8 INFO nova.compute.manager [$req - default default] [instance: $instance_uuid] Rebooting instance 
2021-01-20 10:38:34.559 8 WARNING nova.virt.libvirt.driver [$req - default default] [instance: $instance_uuid] Cannot destroy instance, operation time out: libvirtError: Timed out during operation: cannot acquire state change lock (held by monitor=remoteDispatchDomainBlockJobAbort)
2021-01-20 10:38:34.567 8 WARNING nova.compute.manager [$req - default default] [instance: $instance_uuid] Reboot failed but instance is running: InstancePowerOffFailure: Failed to power off instance: operation time out


  • Red Hat OpenStack Platform 13
  • Red Hat OpenStack Platform 16.1

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