pmemblk, dev-dax: Update descriptions

[fio.git] / HOWTO

diff --git a/HOWTO b/HOWTO
index 33f8718a94d0352f995827f63ed3384f83d9cd63..9c8a8375ae513a7775c08d0378a224930cafc681 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -904,11 +904,13 @@ ioengine=str      Defines how the job issues io to the file. The following
                                overwriting. The writetrim mode works well
                                for this constraint.
 
                                overwriting. The writetrim mode works well
                                for this constraint.
 

-                       pmemblk Read and write through the NVML libpmemblk
-                               interface.
+                       pmemblk Read and write using filesystem DAX to a file
+                               on a filesystem mounted with DAX on a persistent
+                               memory device through the NVML libpmemblk library.

 
 

-                       dev-dax Read and write through a DAX device exposed
-                               from persistent memory.
+                       dev-dax Read and write using device DAX to a persistent
+                               memory device (e.g., /dev/dax0.0) through the
+                               NVML libpmem library.

 
                        external Prefix to specify loading an external
                                IO engine object file. Append the engine
 
                        external Prefix to specify loading an external
                                IO engine object file. Append the engine