RHV: Guest pauses with eother when attempting to install Guest OS, or doing disk paritioning

Solution Verified - Updated -

Issue

  • Guest pauses with eother when attempting to install Guest OS, configure LVM or partition the disk.
  • Cannot create new VMs after upgrading to RHEL 7.5 hosts
  • When Guest OS installation starts, the VM pauses with:
VM example.com has been paused due to unknown storage error.

Environment

  • Red Hat Virtualization 4.x
  • Red Hat Enterprise Linux 7.5 Hosts
    • kernel-3.10.0-862.11.6.el7.x86_64
    • qemu-kvm-rhev-2.10.0-21.el7_5.4.x86_64
  • NFSv4 Storage with Mandatory Locking enabled

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