fix: Allow deleting orphans while retaining the data

check for DeleteCustomResourceOnly label in orphan when deciding whether to clean the data associated

ref#11286

Signed-off-by: Nina Zhan <[email protected]>

Author: nzhan126

controller/orphan_controller.go

@@ -623,6 +623,10 @@ func (oc *OrphanController) updateDataCleanableCondition(orphan *longhorn.Orphan
 		reason = oc.checkOrphanedReplicaDataCleanable(node, orphan)
 	}
 
+	if orphan.Labels[types.DeleteCustomResourceOnly] == "true" {
+		reason = longhorn.OrphanConditionTypeDataCleanableReasonSkipped
+	}
+
 	return nil
 }