respond to get file size

[fio.git] / HOWTO

diff --git a/HOWTO b/HOWTO
index 725214fb4d14a0b2d0099f0106a8e2ad6822e7eb..47eff96a9158989f0b178ae168ec25faf7fd2f98 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -435,6 +435,12 @@ filesize=int       Individual file sizes. May be a range, in which case fio
                and limited to 'size' in total (if that is given). If not
                given, each created file is the same size.
 
+file_append=bool       Perform IO after the end of the file. Normally fio will
+               operate within the size of a file. If this option is set, then
+               fio will append to the file instead. This has identical
+               behavior to setting offset to the size of a file. This option
+               is ignored on non-regular files.
+
 fill_device=bool
 fill_fs=bool   Sets size to something really large and waits for ENOSPC (no
                space left on device) as the terminating condition. Only makes
@@ -519,6 +525,8 @@ 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