Warn admins not to disable file locking when using object storage as primary storage

Signed-off-by: Claudio Cambra <[email protected]>

Author: claucambra

admin_manual/configuration_files/primary_storage.rst

@@ -59,6 +59,10 @@ The configuration has the following structure:
 		],
 	],
 
+.. note:: You are NOT supposed to disable file locking and this is now considered potentially
+	dangerous. Locking is handled in Redis and is handled separately from the underlying storage. If
+	you have disabled file locking already it is highly encouraged for you to re-enable it.
+
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