initial code repo

[stor4nfv.git] / src / ceph / doc / dev / delayed-delete.rst

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