X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=HOWTO;h=68e17e9f4743b6738fe10c1e329be9783f8af746;hb=996936f995c47f4744a49e05419e7d4c0364c64e;hp=e54382b19b5e35beaa907b1cb263081d5c8bab44;hpb=9b8365618309572d8fd2579c8ea3132db89f843f;p=fio.git

diff --git a/HOWTO b/HOWTO
index e54382b1..68e17e9f 100644
--- 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,
@@ -993,7 +998,8 @@ zoneskip=int	Skip the specified number of bytes when zonesize data has
 		io on zones of a file.
 
 write_iolog=str	Write the issued io patterns to the specified file. See
-		read_iolog.
+		read_iolog.  Specify a separate file for each job, otherwise
+		the iologs will be interspersed and the file may be corrupt.
 
 read_iolog=str	Open an iolog with the specified file name and replay the
 		io patterns it contains. This can be used to store a