Fix: deny overwrite mode and num subbuf less than 2

[lttng-tools.git] / doc / man / lttng.1

diff --git a/doc/man/lttng.1 b/doc/man/lttng.1
index c8933441eaeff6aa410ffe2d0c59b60538ce9cd1..09c77d1d3a99feee543c4e96fc7a5555423d0d35 100644 (file)
--- a/doc/man/lttng.1
+++ b/doc/man/lttng.1
@@ -252,9 +252,12 @@ Simple listing of options
 .BR "\-o, \-\-output PATH"
 Specify output path for traces
 .TP
+.BR "\-\-no-output"
+Traces will not be output
+.TP
 .BR "\-\-snapshot"
-Set the session in snapshot mode. Created without a consumer and uses the URL,
-if one is specified, as the default snapshot output. Every channel will be set
+Set the session in snapshot mode. Created in no-output mode and uses the
+URL, if one is specified, as the default snapshot output.  Every channel will be set
 in overwrite mode and with mmap output (splice not supported).
 .TP
 .BR "\-\-live [USEC]"
@@ -399,7 +402,8 @@ Apply to the user-space tracer
 Discard event when subbuffers are full (default)
 .TP
 .BR "\-\-overwrite"
-Flight recorder mode : overwrites events when subbuffers are full
+Flight recorder mode: overwrites events when subbuffers are full. The
+number of subbuffer must be 2 or more.
 .TP
 .BR "\-\-subbuf-size SIZE"
 Subbuffer size in bytes {+k,+M,+G}.