Description of problem:
The problem arises when trying to boot into the fedora 27 installation setup.
It occurs in the server as well as in the netinstall when starting anaconda service, also with basic graphics.

Version-Release number of selected component:
anaconda-27.20.4-1

The following was filed automatically by anaconda:
anaconda 27.20.4-1 exception report
Traceback (most recent call first):
  File "/usr/lib64/python3.6/site-packages/gi/overrides/BlockDev.py", line 824, in wrapped
    raise transform[1](msg)
  File "/usr/lib/python3.6/site-packages/blivet/populator/helpers/dmraid.py", line 69, in run
    blockdev.dm.activate_raid_set(rs_name)
  File "/usr/lib/python3.6/site-packages/blivet/populator/populator.py", line 345, in handle_format
    helper_class(self, info, device).run()
  File "/usr/lib/python3.6/site-packages/blivet/threads.py", line 45, in run_with_lock
    return m(*args, **kwargs)
  File "/usr/lib/python3.6/site-packages/blivet/populator/populator.py", line 318, in handle_device
    self.handle_format(info, device)
  File "/usr/lib/python3.6/site-packages/blivet/threads.py", line 45, in run_with_lock
    return m(*args, **kwargs)
  File "/usr/lib/python3.6/site-packages/blivet/populator/populator.py", line 519, in _populate
    self.handle_device(dev)
  File "/usr/lib/python3.6/site-packages/blivet/threads.py", line 45, in run_with_lock
    return m(*args, **kwargs)
  File "/usr/lib/python3.6/site-packages/blivet/populator/populator.py", line 454, in populate
    self._populate()
  File "/usr/lib/python3.6/site-packages/blivet/threads.py", line 45, in run_with_lock
    return m(*args, **kwargs)
  File "/usr/lib/python3.6/site-packages/blivet/blivet.py", line 272, in reset
    self.devicetree.populate(cleanup_only=cleanup_only)
  File "/usr/lib/python3.6/site-packages/blivet/threads.py", line 45, in run_with_lock
    return m(*args, **kwargs)
  File "/usr/lib/python3.6/site-packages/blivet/osinstall.py", line 1175, in storage_initialize
    storage.reset()
  File "/usr/lib64/python3.6/threading.py", line 864, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/lib64/python3.6/site-packages/pyanaconda/threading.py", line 252, in run
    threading.Thread.run(self)
gi.overrides.BlockDev.DMError: Failed to activate the RAID set 'nvidia_bejhafae'

Additional info:
addons:         com_redhat_kdump, com_redhat_docker
cmdline:        /usr/libexec/system-python  /sbin/anaconda
cmdline_file:   BOOT_IMAGE=vmlinuz initrd=initrd.img inst.stage2=hd:LABEL=Fedora-S-dvd-x86_64-27 quiet
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         4.13.9-300.fc27.x86_64
product:        Fedora
release:        Cannot get release name.
type:           anaconda
version:        27