Why executor queue is getting full and VMs are going to "non responding" status when a VM takes time to power off

Solution In Progress - Updated -

Issue

  • If the destroy operation of VM (power off operation) is taking time to complete, then the executor queue of vdsm is getting full and all the VMs running in the hosts are going to not responding status. All the stuck threads are serving the VM which is going down.

Environment

  • Red Hat Virtualization 4.2.

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