X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=README;h=f713f73793d1ac321e098576a38dcc34e610b479;hp=7e87c47b8ef8ea52940b0757884d4cf9164b2435;hb=ad92396cc21055cee93470dcf65e82ccde03aac5;hpb=244e170ebd309303d124c57cde7bf7a3b40d09e7

diff --git a/README b/README
index 7e87c47b..f713f737 100644
--- a/README
+++ b/README
@@ -71,21 +71,31 @@ $ fio
 	--help		Print this page
 	--cmdhelp=cmd	Print command help, "all" for all of them
 	--showcmd	Turn a job file into command line options
+	--readonly	Turn on safety read-only checks
+	--eta=when	When ETA estimate should be printed
+			May be "always", "never" or "auto"
+
 
 Any parameters following the options will be assumed to be job files,
 unless they match a job file parameter. You can add as many as you want,
 each job file will be regarded as a separate group and fio will stonewall
 its execution.
 
+The --readonly switch is an extra safety guard to prevent accidentically
+turning on a write setting when that is not desired. Fio will only write
+if rw=write/randwrite/rw/randrw is given, but this extra safety net can
+be used as an extra precaution. It will also enable a write check in the
+io engine core to prevent an accidental write due to a fio bug.
+
 
 Job file
 --------
 
 See the HOWTO file for a more detailed description of parameters and what
-they mean. This file contains the terse version.  Only a few options can
-be controlled with command line parameters, generally it's a lot easier to
+they mean. This file contains the terse version. You can describe big and
+complex setups with the command line, but generally it's a lot easier to
 just write a simple job file to describe the workload. The job file format
-is in the ini style format, as it's easy to read and write for the user.
+is in the ini style format, as that is easy to read and write for the user.
 
 The job file parameters are: