Are "dd: sending ioctl xxxxxx to a partition" messages harmful?

Solution In Progress - Updated -

Issue

  • Why do I see dd: sending ioctl xxxxxx to a partition messages in /var/log/messages ?
Dec 17 15:25:04 localhost kernel: [ 1608.919799] dd: sending ioctl 80306d02 to a partition!
  • Also similar messages, e.g.
Mar  3 18:54:39 localhost kernel: qemu-kvm: sending ioctl 5326 to a partition!

Environment

  • Red Hat Enterprise Virtualization (RHEV) 3.5
  • Red Hat Enterprise Virtualization Hypervisor (RHEV-H) release 7.2 (20160105.1.el7ev)
  • Red Hat Enterprise Linux (RHEL) 7.x

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