How to add a new option to a given volume ? =========================================== * Add a entry in 'struct volume_options options[]' with your key, what is the type of the 'key', etc. * The 'key' and corresponding 'value' given for the same by user are validated before calling init() of the translator/transport/scheduler/auth-module. * Once the complete init() is successful, user will get a warning if he has given a 'key' which is not defined in these modules.