Index: /trunk/src/VBox/Devices/Storage/DrvVD.cpp
===================================================================
--- /trunk/src/VBox/Devices/Storage/DrvVD.cpp	(revision 64837)
+++ /trunk/src/VBox/Devices/Storage/DrvVD.cpp	(revision 64838)
@@ -1951,4 +1951,5 @@
     {
         STAM_REL_COUNTER_INC(&pThis->StatReqsSucceeded);
+        STAM_REL_COUNTER_ADD(&pThis->StatBytesRead, cbRead);
         Log2(("%s: off=%#llx pvBuf=%p cbRead=%d\n%.*Rhxd\n", __FUNCTION__,
               off, pvBuf, cbRead, cbRead, pvBuf));
@@ -2075,5 +2076,8 @@
 
     if (RT_SUCCESS(rc))
+    {
         STAM_REL_COUNTER_INC(&pThis->StatReqsSucceeded);
+        STAM_REL_COUNTER_ADD(&pThis->StatBytesWritten, cbWrite);
+    }
     else
         STAM_REL_COUNTER_INC(&pThis->StatReqsFailed);