Compress-force is only allowed with ('lzo', 'zlib', 'no')

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Brief description of the problem

can’t enable compress-force option

Detailed step by step instructions to reproduce the problem

tried to save enable compress-force option

Web-UI screenshot

Error Traceback provided on the Web-UI

            Traceback (most recent call last):

File “/opt/rockstor/eggs/gunicorn-0.16.1-py2.7.egg/gunicorn/workers/”, line 34, in run
client, addr = self.socket.accept()
File “/usr/lib64/python2.7/”, line 202, in accept
sock, addr = self._sock.accept()
error: [Errno 11] Resource temporarily unavailable

forgot to mention - option doesn’t work with either zlib or lzo