X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=HOWTO;h=999f7778f37d9d9628f76189609411f7053e77b2;hb=cd98801fbed25dcc49f58cf1451af22f0455a6e6;hp=4e52e6509c18a6efb2350071d15b4899fb0be759;hpb=f7fa2653589f9ecf0d3d106286f17620bcf32de0;p=fio.git

diff --git a/HOWTO b/HOWTO
index 4e52e650..999f7778 100644
--- a/HOWTO
+++ b/HOWTO
@@ -327,6 +327,14 @@ bs=int		The block size used for the io units. Defaults to 4k. Values
 		can do so by passing an empty read size - bs=,8k will set
 		8k for writes and leave the read default value.
 
+blockalign=int
+ba=int		At what boundary to align random IO offsets. Defaults to
+		the same as 'blocksize' the minimum blocksize given.
+		Minimum alignment is typically 512b for using direct IO,
+		though it usually depends on the hardware block size. This
+		option is mutually exclusive with using a random map for
+		files, so it will turn off that option.
+
 blocksize_range=irange
 bsrange=irange	Instead of giving a single block size, specify a range
 		and fio will mix the issued io block sizes. The issued