Failed RHV-H installation with "An unknown error has occurred" message

Solution Verified - Updated -

Issue

RHV-H installation fails with the message "The unknown error has occured"
The more detailed information shows that the Anaconda reports an exception related to FCoE
A Traceback includes

OSError [Errno 17] File exists '/mnt/sysimage/etc/fcoe'

Environment

  • RHV 4.x
  • RHV-H before RHVH-4.1-20180410.0-RHVH-x86_64-dvd1.iso
  • python-blivet before python-blivet-0.61.15.67-1

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