diff --git a/src/aiori-MPIIO.c b/src/aiori-MPIIO.c
index 9f5adce..b7ac933 100755
--- a/src/aiori-MPIIO.c
+++ b/src/aiori-MPIIO.c
@@ -370,9 +370,10 @@ static IOR_offset_t MPIIO_Xfer(int access, void *fd, IOR_size_t * buffer,
 /*
  * Perform fsync().
  */
-static void MPIIO_Fsync(void *fd, IOR_param_t * param)
+static void MPIIO_Fsync(void *fdp, IOR_param_t * param)
 {
-        ;
+    MPI_File * fd = (MPI_File*) fdp;
+    MPI_File_sync(*fd);
 }
 
 /*
@@ -438,7 +439,7 @@ static IOR_offset_t SeekOffset(MPI_File fd, IOR_offset_t offset,
                 if (param->filePerProc) {
                         tempOffset = tempOffset / param->transferSize;
                 } else {
-                        /* 
+                        /*
                          * this formula finds a file view offset for a task
                          * from an absolute offset
                          */
diff --git a/src/ior.c b/src/ior.c
index 52d126b..c53487e 100755
--- a/src/ior.c
+++ b/src/ior.c
@@ -98,7 +98,6 @@ IOR_test_t * ior_run(int argc, char **argv, MPI_Comm world_com, FILE * world_out
                 }
 
                 TestIoSys(tptr);
-
                 if(rank == 0 && tptr->params.stoneWallingWearOut){
                   if (tptr->params.stoneWallingStatusFile[0]){
                     StoreStoneWallingIterations(tptr->params.stoneWallingStatusFile, tptr->results->pairs_accessed);
@@ -201,10 +200,12 @@ int ior_main(int argc, char **argv)
             }
             TestIoSys(tptr);
 
-            if (tptr->params.stoneWallingStatusFile[0]){
-              StoreStoneWallingIterations(tptr->params.stoneWallingStatusFile, tptr->results->pairs_accessed);
-            }else{
-              fprintf(out_logfile, "Pairs deadlineForStonewallingaccessed: %lld\n", (long long) tptr->results->pairs_accessed);
+            if(rank == 0 && tptr->params.stoneWallingWearOut){
+              if (tptr->params.stoneWallingStatusFile[0]){
+                StoreStoneWallingIterations(tptr->params.stoneWallingStatusFile, tptr->results->pairs_accessed);
+              }else{
+                fprintf(out_logfile, "Pairs deadlineForStonewallingaccessed: %lld\n", (long long) tptr->results->pairs_accessed);
+              }
             }
     }
 
@@ -719,7 +720,7 @@ static void DisplayUsage(char **argv)
                 " -D N  deadlineForStonewalling -- seconds before stopping write or read phase",
                 " -O stoneWallingWearOut=1 -- once the stonewalling timout is over, all process finish to access the amount of data",
                 " -O stoneWallingWearOutIterations=N -- stop after processing this number of iterations, needed for reading data back written with stoneWallingWearOut",
-                " -O stoneWallingStatusFile=FILE -- this file keeps the number of iterations from stonewalling during write and allows to use them for read"
+                " -O stoneWallingStatusFile=FILE -- this file keeps the number of iterations from stonewalling during write and allows to use them for read",
                 " -e    fsync -- perform fsync/msync upon POSIX/MMAP write close",
                 " -E    useExistingTestFile -- do not remove test file before write access",
                 " -f S  scriptFile -- test script name",
@@ -2313,7 +2314,9 @@ static void ValidateTests(IOR_param_t * test)
         if ((strcasecmp(test->api, "POSIX") != 0) && test->singleXferAttempt)
                 WARN_RESET("retry only available in POSIX",
                            test, &defaults, singleXferAttempt);
-        if ((strcasecmp(test->api, "POSIX") != 0) && (strcasecmp(test->api, "MMAP") != 0)
+        if ((strcasecmp(test->api, "POSIX") != 0) &&
+            (strcasecmp(test->api, "MMAP") != 0) &&
+            (strcasecmp(test->api, "MPIIO") != 0)
             && test->fsync)
                 WARN_RESET("fsync() only available in POSIX/MMAP",
                            test, &defaults, fsync);