[checkers] directio now is the internal default checker

The directio is more advanced than readsector0 : async and unbuffered.
Make it the default choice.

diff --git a/libcheckers/checkers.h b/libcheckers/checkers.h
index 482ffb8..9b270eb 100644 (file)
--- a/libcheckers/checkers.h
+++ b/libcheckers/checkers.h
@@ -59,7 +59,7 @@
 #define EMC_CLARIION "emc_clariion"
 #define READSECTOR0  "readsector0"
 
-#define DEFAULT_CHECKER READSECTOR0
+#define DEFAULT_CHECKER DIRECTIO
 
 /*
  * Overloaded storage response time can be very long.