[PATCH] Add verify_meta verification type

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/HOWTO b/HOWTO
index 21ba960..c38266c 100644
--- a/HOWTO
+++ b/HOWTO
@@ -592,6 +592,10 @@
 
 			sha256	Use sha256 as the checksum function.
 
+			meta	Write extra information about each io
+				(timestamp, block number etc.). The block
+				number is verified.
+
 			null	Only pretend to verify. Useful for testing
 				internals with ioengine=null, not for much
 				else.