Merge pull request #852 from xing-yang/health_status

Set health annotation to Inaccessible when it is not set

pkg/csi/service/common/util.go

@@ -351,6 +351,10 @@ func ConvertVolumeHealthStatus(volHealthStatus string) (string, error) {
 	case string(pbmtypes.PbmHealthStatusForEntityUnknown):
 		return string(pbmtypes.PbmHealthStatusForEntityUnknown), nil
 	default:
-		return "", fmt.Errorf("cannot convert invalid volume health status %s", volHealthStatus)
+		// NOTE: volHealthStatus is not set by SPBM in this case.
+		// This implies the volume does not exist any more.
+		// Set health annotation to "Inaccessible" so that
+		// the caller can make appropriate reactions based on this status
+		return VolHealthStatusInaccessible, nil
 	}
 }