Add 'sequential' file_service_type
This service type will keep a file open until IO to it is completely
done, before moving on to the next available file.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/HOWTO b/HOWTO
index 4ff2d92..b8a7dd7 100644
--- a/HOWTO
+++ b/HOWTO
@@ -387,6 +387,10 @@
roundrobin Round robin over open files. This
is the default.
+ sequential Finish one file before moving on to
+ the next. Multiple files can still be
+ open depending on 'openfiles'.
+
The string can have a number appended, indicating how
often to switch to a new file. So if option random:4 is
given, fio will switch to a new random file after 4 ios