Add blockalign/ba option
Allows the job to specify alignment of the IO specifically, instead
of relying on using blocksize as the offset alignment.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/HOWTO b/HOWTO
index 4e52e65..999f777 100644
--- a/HOWTO
+++ b/HOWTO
@@ -327,6 +327,14 @@
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