title: File sharing services with locking
body: <p>I have a file server and it is connected to 10 windows nodes using LAN . In a production shared folder we are having a big data with some software codes . every developers are using the same file . Some times User A didn't know User B is using the file .
  So my actual question is , Is there any option or any shared storage mechanism that actually help this scenario?</p>
  
  <p>If USER-A modifying a file rest of the users only need read only permission , after he done his work other users can able to work with it . </p>
  
  <p>Any help ? </p>