Addedd -z option to specify file size for filepaths fio files

[fio.git] / HOWTO

diff --git a/HOWTO b/HOWTO
index 8da5527a3edb6cbfd408f497260651d99c633be0..f43f3ec34748e369350f00e9ea2b2b17250c1cd6 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -578,8 +578,6 @@ bs_is_seq_rand      If this option is set, fio will use the normal read,write
 
 zero_buffers   If this option is given, fio will init the IO buffers to
                all zeroes. The default is to fill them with random data.
-               The resulting IO buffers will not be completely zeroed,
-               unless scramble_buffers is also turned off.
 
 refill_buffers If this option is given, fio will refill the IO buffers
                on every submit. The default is to only fill it at init
@@ -919,10 +917,10 @@ norandommap       Normally fio will cover every block of the file when doing
                random IO. If this option is given, fio will just get a
                new random offset without looking at past io history. This
                means that some blocks may not be read or written, and that
-               some blocks may be read/written more than once. This option
-               is mutually exclusive with verify= if and only if multiple
-               blocksizes (via bsrange=) are used, since fio only tracks
-               complete rewrites of blocks.
+               some blocks may be read/written more than once. If this option
+               is used with verify= and multiple blocksizes (via bsrange=),
+               only intact blocks are verified, i.e., partially-overwritten
+               blocks are ignored.
 
 softrandommap=bool See norandommap. If fio runs with the random block map
                enabled and it fails to allocate the map, if this option is