Hello I am using PVFS2-1.5.1 and as far as I know, to modify the default stripe size of PVFS2, I must modify the header include/pvfs2-dist-simple-stripe.h . Strangely , I did so and rebuilt the source, yet the pvfs2-viewdist still shows me the default striping for any new files created with the modified pvfs2 build! Nirmal