Fix segfault with verify_async

[fio.git] / fio.1

diff --git a/fio.1 b/fio.1
index e8fb57f4ca33a2035c445d8ab31dbc5f794fbcc1..68d5956561a0a3e10e40034e5c6273a7d7aac11b 100644 (file)
--- a/fio.1
+++ b/fio.1
@@ -329,6 +329,13 @@ default is to only fill it at init time and reuse that data. Only makes sense
 if zero_buffers isn't specified, naturally. If data verification is enabled,
 refill_buffers is also automatically enabled.
 .TP
+.BI scramble_buffers \fR=\fPbool
+If \fBrefill_buffers\fR is too costly and the target is using data
+deduplication, then setting this option will slightly modify the IO buffer
+contents to defeat normal de-dupe attempts. This is not enough to defeat
+more clever block compression attempts, but it will stop naive dedupe
+of blocks. Default: true.
+.TP
 .BI nrfiles \fR=\fPint
 Number of files to use for this job.  Default: 1.
 .TP
@@ -747,7 +754,7 @@ false.
 .BI verify_dump \fR=\fPbool
 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.
+data corruption occurred. Off by default.
 .TP
 .BI verify_async \fR=\fPint
 Fio will normally verify IO inline from the submitting thread. This option
@@ -924,7 +931,7 @@ Enable the reporting of percentiles of completion latencies.
 Overwrite the default list of percentiles for completion
 latencies. Each number is a floating number in the range (0,100], and
 the maximum length of the list is 20. Use ':' to separate the
-numbers. For example, --percentile_list=99.5:99.9 will cause fio to
+numbers. For example, \-\-percentile_list=99.5:99.9 will cause fio to
 report the values of completion latency below which 99.5% and 99.9% of
 the observed latencies fell, respectively.
 .SH OUTPUT