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+====================================
+ Object Store Architecture Overview
+====================================
+
+.. graphviz::
+
+ digraph object_store {
+ size="7,7";
+ node [color=lightblue2, style=filled, fontname="Serif"];
+
+ "testrados" -> "librados"
+ "testradospp" -> "librados"
+
+ "rbd" -> "librados"
+
+ "radostool" -> "librados"
+
+ "radosgw-admin" -> "radosgw"
+
+ "radosgw" -> "librados"
+
+ "radosacl" -> "librados"
+
+ "librados" -> "objecter"
+
+ "ObjectCacher" -> "Filer"
+
+ "dumpjournal" -> "Journaler"
+
+ "Journaler" -> "Filer"
+
+ "SyntheticClient" -> "Filer"
+ "SyntheticClient" -> "objecter"
+
+ "Filer" -> "objecter"
+
+ "objecter" -> "OSDMap"
+
+ "ceph-osd" -> "PG"
+ "ceph-osd" -> "ObjectStore"
+
+ "crushtool" -> "CrushWrapper"
+
+ "OSDMap" -> "CrushWrapper"
+
+ "OSDMapTool" -> "OSDMap"
+
+ "PG" -> "PrimaryLogPG"
+ "PG" -> "ObjectStore"
+ "PG" -> "OSDMap"
+
+ "PrimaryLogPG" -> "ObjectStore"
+ "PrimaryLogPG" -> "OSDMap"
+
+ "ObjectStore" -> "FileStore"
+ "ObjectStore" -> "BlueStore"
+
+ "BlueStore" -> "rocksdb"
+
+ "FileStore" -> "xfs"
+ "FileStore" -> "btrfs"
+ "FileStore" -> "ext4"
+ }
+
+
+.. todo:: write more here
+