diff --git a/msg/StorageSummary.msg b/msg/StorageSummary.msg
index f507fac..c795e98 100644
--- a/msg/StorageSummary.msg
+++ b/msg/StorageSummary.msg
@@ -1,11 +1,20 @@
 # Based on storage configuration, is storage available for recording?
 bool is_storage_available
 
+# Is retention enabled at the moment?
+bool is_retention_enabled
+
 # Size of bags directory in bytes
 uint64 bags_dir_size_bytes
 
 # Available disk space in bytes
 uint64 available_disk_space_bytes
 
+# Total disk space in bytes
+uint64 total_disk_space_bytes
+
 # When was the summary updated last
 builtin_interfaces/Time last_updated
+
+# Oldest bag file in buffer
+builtin_interfaces/Time oldest_bag_file_time