title: Which parameter can determine the object size in RADOS of Ceph
body: <p>When storing files, Ceph will cut files into several objects while most of which have the same size except the last one(the file size may not be a multiple of the object size).</p>
  
  <p>I know from the official website of Ceph that the object size is not fixed but can be determined by a certain parameter, so which is the parameter deciding the object size?</p>