On Fri, Sep 12, 2014 at 9:26 AM, brandon li <brandon.li.1ca at gmail.com> wrote: > Hi, > > I am new to ceph file system, and have got a newbie question: > > For a sparse file, how could ceph file system know the hole in the file was > never created or some stripe was just simply lost? CephFS does not keep any metadata to try and track that; it assumes that non-existent objects are supposed to be holes. It relies on RADOS not losing data. -Greg Software Engineer #42 @ http://inktank.com | http://ceph.com
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