Add verify_dump option to control whether to dump bad/good blocks or not

[fio.git] / HOWTO

diff --git a/HOWTO b/HOWTO
index 1915bd696feecf56f1cbbcda46ce3569e98980e0..68e17e9f4743b6738fe10c1e329be9783f8af746 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -926,6 +926,11 @@ verify_fatal=bool  Normally fio will keep checking the entire contents
                option is set, fio will exit the job on the first observed
                failure.
 
+verify_dump=bool       If set, dump the contents of both the original data
+               block and the data block we read off disk to files. This
+               allows later analysis to inspect just what kind of data
+               corruption occurred. On by default.
+
 verify_async=int       Fio will normally verify IO inline from the submitting
                thread. This option takes an integer describing how many
                async offload threads to create for IO verification instead,