zbd: check write ranges for zone_reset_threshold option

[fio.git] / HOWTO.rst

diff --git a/HOWTO.rst b/HOWTO.rst
index a5f8cc2df3c089de01d7eaaed7985927954e7af7..158c5d897e520c5d075d201cee8b10bf6fc81386 100644 (file)
--- a/HOWTO.rst
+++ b/HOWTO.rst
@@ -1088,7 +1088,9 @@ Target file/device
        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.
+       periodically as :option:`zone_reset_frequency` specifies. If there are
+       multiple jobs when using this option, the IO range for all write jobs
+       has to be the same.
 
 .. option:: zone_reset_frequency=float