add a new field to the ompio data structure (stripe_count) and set it correctly on pvfs2 and lustre.

ompi/mca/fs/lustre/fs_lustre_file_open.c

@@ -139,8 +139,9 @@ mca_fs_lustre_file_open (struct ompi_communicator_t *comm,
         return OMPI_ERROR;
     }
 
-    if (mca_fs_lustre_stripe_size > 0) {
-        fh->f_stripe_size = mca_fs_lustre_stripe_size;
+    if (fs_lustre_stripe_size > 0 && fs_lustre_stripe_width>0) {
+        fh->f_stripe_size  = fs_lustre_stripe_size;
+        fh->f_stripe_count = fs_lustre_stripe_width;
     }
     else {
       lump = alloc_lum();
@@ -154,6 +155,7 @@ mca_fs_lustre_file_open (struct ompi_communicator_t *comm,
 	  return OMPI_ERROR;
       }
       fh->f_stripe_size = lump->lmm_stripe_size;
+      fh->f_stripe_count = lump->lmm_stripe_count;
 
       //      if ( NULL != lump ) {
       //	free ( lump );

ompi/mca/fs/pvfs2/fs_pvfs2_file_open.c

@@ -180,6 +180,7 @@ mca_fs_pvfs2_file_open (struct ompi_communicator_t *comm,
 
     if (fs_pvfs2_stripe_size > 0 && fs_pvfs2_stripe_width > 0) {
         fh->f_stripe_size = fs_pvfs2_stripe_size;
+        fh->f_stripe_count = fs_pvfs2_stripe_width;
     }
 
     return OMPI_SUCCESS;

ompi/mca/io/ompio/io_ompio.h

@@ -306,6 +306,7 @@ struct mca_io_ompio_file_t {
     void                  *f_fs_ptr;
     int                    f_atomicity;
     size_t                 f_stripe_size;
+    int                    f_stripe_count;
     size_t                 f_cc_size;
     int                    f_bytes_per_agg;
     enum ompio_fs_type     f_fstype;