+ port to connect to in the format of =host/port. If the
+ ioengine is file based, you can specify a number of files
+ by seperating the names with a ':' colon. So if you wanted
+ a job to open /dev/sda and /dev/sdb as the two working files,
+ you would use filename=/dev/sda:/dev/sdb. '-' is a reserved
+ name, meaning stdin or stdout. Which of the two depends
+ on the read/write direction set.
+
+opendir=str Tell fio to recursively add any file it can find in this
+ directory and down the file system tree.
+
+readwrite=str