title: why mongod is shows that attepted to create a lock file on a read-only directory
body: <p>Attempted to create a lock file on a read-only directory: /data/db, terminating
  2020-05-02T00:18:14.201+0530 I CONTROL  [initandlisten] now exiting
  2020-05-02T00:18:14.201+0530 I CONTROL  [initandlisten] shutting down with code:100</p>