unless :option:`verify` is set or :option:`cuda_io` is `posix`.
:option:`iomem` must not be `cudamalloc`. This ioengine defines
engine specific options.
+ **dfs**
+ I/O engine supporting asynchronous read and write operations to the
+ DAOS File System (DFS) via libdfs.
I/O engine specific parameters
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GPU to RAM before a write and copied from RAM to GPU after a
read. :option:`verify` does not affect use of cudaMemcpy.
+.. option:: pool=str : [dfs]
+
+ Specify the UUID of the DAOS pool to connect to.
+
+.. option:: cont=str : [dfs]
+
+ Specify the 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.
+
I/O depth
~~~~~~~~~