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ERROR: test_nominate_denominate (mdraid_test.MDTestNominateDenominate)
Verify that it is possible to nominate and denominate an MD RAID device
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Traceback (most recent call last):
  File "/root/rpmbuild/BUILD/libblockdev-2.28/tests/mdraid_test.py", line 328, in test_nominate_denominate
    succ = BlockDev.md_denominate(self.loop_dev)
gi.repository.GLib.GError: g-bd-utils-exec-error-quark: Process reported exit code 1: mdadm: Cannot remove member device sdd from md127.
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Ran 331 tests in 2554.985s