High SPM cpu load during RHEV-M storage manipulation on RHEV 3.3

Solution In Progress - Updated -

Issue

  • When issuing a vm snapshot remove, the SPM machine (after some minutes) gets a very high cpu load
    • VMs on the same hypervisor seem to suffer from the complete cpu utilization by the SPM operation making vms slow and unresponsive
  • During the snapshot deletion, qemu-kvm processes may also show high CPU usage, even though their hosted guest is idle.

Environment

  • Red Hat Enterprise Virtualization (RHEV) 3.3

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