investigate use of llapi_file_get_stripe for alignment on Lustre
Enhancement suggested by Kalyana Chadalavada. The issue is that Darshan does not have a portable and efficient way to detect file alignment on Lustre volumes. Stat() of newly opened files it too expensive, and statfs() of a mount point does not return default stripe information in the block size field. As an alternative we could detect the presence of a Lustre library at configure time and use the llapi_file_get_stripe() call on Lustre volumes.
Need to benchmark this routine and determine if it is feasible to use it from the Darshan runtime library.