Move version logging

[fio.git] / HOWTO

diff --git a/HOWTO b/HOWTO
index 68e17e9f4743b6738fe10c1e329be9783f8af746..d4e70923facf5b0b3ed322a551bee9a445fc3046 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -375,10 +375,15 @@ 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.
 
                and limited to 'size' in total (if that is given). If not
                given, each created file is the same size.
 

-fill_device=bool Sets size to something really large and waits for ENOSPC (no
+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
                 sense with sequential write. For a read workload, the mount
                space left on device) as the terminating condition. Only makes
                 sense with sequential write. For a read workload, the mount

-               point will be filled first then IO started on the result.
+               point will be filled first then IO started on the result. This
+               option doesn't make sense if operating on a raw device node,
+               since the size of that is already known by the file system.
+               Additionally, writing beyond end-of-device will not return
+               ENOSPC there.

 
 blocksize=int
 bs=int         The block size used for the io units. Defaults to 4k. Values
 
 blocksize=int
 bs=int         The block size used for the io units. Defaults to 4k. Values