Unable to migrate guest: operation failed: migration jopb: unexpectedly failed

Issue

When performing live migration using virt-manager it fails with the following messages

Error Messages:

Using the virt-manager
Unable to migrate guest: operation failed: migration jopb: unexpectedly failed

Details tab shows the following:

unable to migrate guest: operation failed: migration job: unexpectedly failed
Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/asyncjob.py", line 45, in cb_wrapper
    callback(asyncjob, *args, **kwargs)
  File "/usr/share/virt-manager/virtManager/migrate.py", line 523, in _async_migrate
    vm.migrate(dstconn, migrate_uri, rate, live, secure, meter=meter)
  File "/usr/share/virt-manager/virtManager/domain.py", line 1141, in migrate
    self._backend.migrate(destconn.vmm, flags, newname, interface, rate)
  File "/usr/lib64/python2.6/site-packages/libvirt.py", line 516, in migrate
    if ret is None:raise libvirtError('virDomainMigrate() failed', dom=self)
libvirtError: operation failed: migration job: unexpectedly failed