--- src/chunkserver/iostat.h 2019-04-03 07:52:10.528372925 -0000 +++ src/chunkserver/iostat.h 2019-04-03 07:50:48.295368946 -0000 @@ -28,6 +28,7 @@ #include <algorithm> #include <unordered_map> #include <vector> +#include <sys/sysmacros.h> #include <sys/stat.h> #include <sys/types.h>