1 files changed, 7 insertions, 0 deletions
diff --git a/weed/pb/master.proto b/weed/pb/master.proto
index f03b3a9ab..d39dc8723 100644
--- a/weed/pb/master.proto
+++ b/weed/pb/master.proto
@@ -58,6 +58,7 @@ message HeartbeatResponse {
     string leader = 2;
     string metrics_address = 3;
     uint32 metrics_interval_seconds = 4;
+    repeated StorageBackend storage_backends = 5;
 }
 
 message VolumeInformationMessage {
@@ -89,6 +90,12 @@ message VolumeEcShardInformationMessage {
     uint32 ec_index_bits = 3;
 }
 
+message StorageBackend {
+    string type = 1;
+    string id = 2;
+    map<string, string> properties = 3;
+}
+
 message Empty {
 }