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return value is not set to zero in init after successful initialization. This causes init to return -1 if no options are given, since ret is assigned the return value of dict_get_str of one of the options.
PATCH: http://patches.gluster.com/patch/2158 in release-2.0 (performance/quick-read: set return value to zero after successful init.)
PATCH: http://patches.gluster.com/patch/2157 in master (performance/quick-read: set return value to zero after successful init.)