Effort is made to ensure a VM always have a status and Unused VM statuses are removed

docs/source/misc/todo.rst

@@ -1,19 +1,32 @@
 TODO
 ====
 
+Security
+--------
+
 * **Check Authentication:** Nico reported that some endpoints
-  even work without providing token. (ListUserVM)
+  even work without providing token. (e.g ListUserVM)
+
+Refactoring/Feature
+-------------------
 
 * Put overrides for **IMAGE_BASE**, **VM_BASE** in **ImageStorageHandler**.
-
-* Put "Always use only one StorageHandler"
-
+* Expose more details in ListUserFiles.
+* Throw KeyError instead of returning None when some key is not found in etcd.
 * Create Network Manager
     * That would handle tasks like up/down an interface
     * Create VXLANs, Bridges, TAPs.
     * Remove them when they are no longer used.
 
-* Check for :code:`etcd3.exceptions.ConnectionFailedError` when calling some etcd operation to
-  avoid crashing whole application.
-* Throw KeyError instead of returning None when some key is not found in etcd.
-* Expose more details in ListUserFiles.
+Reliability
+-----------
+
+* What to do if some command hangs forever? e.g CEPH commands
+  :code:`rbd ls ssd` etc. hangs forever if CEPH isn't running
+  or not responding.
+* What to do if etcd goes down?
+
+Misc.
+-----
+
+* Put "Always use only one StorageHandler"