doc: fix unit of zone_reset_threshold and relation to other option

[fio.git] / HOWTO.rst

diff --git a/HOWTO.rst b/HOWTO.rst
index 17caaf5d38f2972d5abe997b0ddb2e3a3649740f..a5f8cc2df3c089de01d7eaaed7985927954e7af7 100644 (file)
--- a/HOWTO.rst
+++ b/HOWTO.rst
@@ -1085,9 +1085,10 @@ Target file/device
 
 .. option:: zone_reset_threshold=float
 
-       A number between zero and one that indicates the ratio of logical
-       blocks with data to the total number of logical blocks in the test
-       above which zones should be reset periodically.
+       A number between zero and one that indicates the ratio of written bytes
+       in the zones with write pointers in the IO range to the size of the IO
+       range. When current ratio is above this ratio, zones are reset
+       periodically as :option:`zone_reset_frequency` specifies.
 
 .. option:: zone_reset_frequency=float