KVM :Virtual Machines start fails with error 'libvirt: unknown OS type hvm'

Solution Verified - Updated -

Issue

  • Unable to start a virtual machines using virt-manager or virsh.
# virsh start <vm-name> returns :
- "2013-07-12 10:14:41.758+0000: 2944: error : virDomainDefParseXML:8249 : unknow OS type hvm"

Environment

  • Red Hat Enterprise 6.X
  • libvirt-0.9.10-21.el6_3.3.x86_64

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