+.. option:: pool=str : [dfs]
+
+ Specify the label or UUID of the DAOS pool to connect to.
+
+.. option:: cont=str : [dfs]
+
+ Specify the label or UUID of the DAOS container to open.
+
+.. option:: chunk_size=int : [dfs]
+
+ Specificy a different chunk size (in bytes) for the dfs file.
+ Use DAOS container's chunk size by default.
+
+.. option:: object_class=str : [dfs]
+
+ Specificy a different object class for the dfs file.
+ Use DAOS container's object class by default.
+
+.. option:: nfs_url=str : [nfs]
+
+ URL in libnfs format, eg nfs://<server|ipv4|ipv6>/path[?arg=val[&arg=val]*]
+ Refer to the libnfs README for more details.
+
+.. option:: program=str : [exec]
+
+ Specify the program to execute.
+
+.. option:: arguments=str : [exec]
+
+ Specify arguments to pass to program.
+ Some special variables can be expanded to pass fio's job details to the program.
+
+ **%r**
+ Replaced by the duration of the job in seconds.
+ **%n**
+ Replaced by the name of the job.
+
+.. option:: grace_time=int : [exec]
+
+ Specify the time between the SIGTERM and SIGKILL signals. Default is 1 second.
+
+.. option:: std_redirect=boot : [exec]
+
+ If set, stdout and stderr streams are redirected to files named from the job name. Default is true.
+