diff --git a/pkg/apis/velero/v2alpha1/data_upload_types.go b/pkg/apis/velero/v2alpha1/data_upload_types.go
index db4c8d3a8..bc7d895dc 100644
--- a/pkg/apis/velero/v2alpha1/data_upload_types.go
+++ b/pkg/apis/velero/v2alpha1/data_upload_types.go
@@ -177,6 +177,10 @@ type DataUploadStatus struct {
 	// +optional
 	IncrementalBytes *int64 `json:"incrementalBytes,omitempty"`
 
+	// SourceSize holds the total size of the source volume.
+	// +optional
+	SourceSize int64 `json:"sourceSize,omitempty"`
+
 	// Node is name of the node where the DataUpload is processed.
 	// +optional
 	Node string `json:"node,omitempty"`
diff --git a/pkg/controller/data_upload_controller.go b/pkg/controller/data_upload_controller.go
index ae50a7741..ed4cb2ae8 100644
--- a/pkg/controller/data_upload_controller.go
+++ b/pkg/controller/data_upload_controller.go
@@ -514,6 +514,8 @@ func (r *DataUploadReconciler) OnDataUploadCompleted(ctx context.Context, namesp
 		du.Status.Phase = velerov2alpha1api.DataUploadPhaseCompleted
 		du.Status.SnapshotID = result.Backup.SnapshotID
 		du.Status.IncrementalBytes = result.Backup.IncrementalBytes
+		du.Status.SourceSize = result.Backup.SourceSize
+
 		du.Status.CompletionTimestamp = &metav1.Time{Time: r.Clock.Now()}
 		if result.Backup.EmptySnapshot {
 			du.Status.Message = "volume was empty so no data was upload"
diff --git a/pkg/datapath/data_path.go b/pkg/datapath/data_path.go
index 0513619be..0a84025bf 100644
--- a/pkg/datapath/data_path.go
+++ b/pkg/datapath/data_path.go
@@ -197,7 +197,7 @@ func (dp *generalDataPath) StartBackup(source AccessPoint, uploaderConfig map[st
 			dp.wgDataPath.Done()
 		}()
 
-		snapshotID, emptySnapshot, totalBytes, incrementalBytes, err := dp.uploaderProv.RunBackup(
+		snapshotID, emptySnapshot, totalBytes, incrementalBytes, sourceSize, err := dp.uploaderProv.RunBackup(
 			dp.ctx,
 			source.ByPath,
 			backupParam.RealSource,
@@ -226,7 +226,14 @@ func (dp *generalDataPath) StartBackup(source AccessPoint, uploaderConfig map[st
 			}
 			dp.callbacks.OnFailed(context.Background(), dp.namespace, dp.jobName, dataPathErr)
 		} else {
-			dp.callbacks.OnCompleted(context.Background(), dp.namespace, dp.jobName, Result{Backup: BackupResult{snapshotID, emptySnapshot, source, totalBytes, ptr.To(incrementalBytes)}})
+			dp.callbacks.OnCompleted(context.Background(), dp.namespace, dp.jobName, Result{Backup: BackupResult{
+				SnapshotID:       snapshotID,
+				EmptySnapshot:    emptySnapshot,
+				Source:           source,
+				TotalBytes:       totalBytes,
+				IncrementalBytes: ptr.To(incrementalBytes),
+				SourceSize:       sourceSize,
+			}})
 		}
 	}()
 
diff --git a/pkg/datapath/types.go b/pkg/datapath/types.go
index bc7d4a9a9..7fbf2a957 100644
--- a/pkg/datapath/types.go
+++ b/pkg/datapath/types.go
@@ -39,6 +39,7 @@ type BackupResult struct {
 	// while a current mover reporting a genuine zero still serializes the key and
 	// unmarshals to a non-nil zero, distinguishing "measured zero" from "not measured".
 	IncrementalBytes *int64 `json:"incrementalBytes,omitempty"`
+	SourceSize       int64  `json:"sourceSize,omitempty"`
 }
 
 // RestoreResult represents the result of a restore