ceph/doc/dev/delayed-delete.rst

   1 =========================
   2  CephFS delayed deletion
   3 =========================
   4
   5 When you delete a file, the data is not immediately removed. Each
   6 object in the file needs to be removed independently, and sending
   7 ``size_of_file / stripe_size * replication_count`` messages would slow
   8 the client down too much, and use a too much of the clients
   9 bandwidth. Additionally, snapshots may mean some objects should not be
  10 deleted.
  11
  12 Instead, the file is marked as deleted on the MDS, and deleted lazily.