It was a ridiculously stupid oversight: I hadn't built the pnfs support in the kernel. I got things squared away by running "make menuconfig" and enabling "NFSv4.1 server support for Parallel NFS (pNFS) (DEVELOPER ONLY)" under File systems ---> Network File Systems ---> NFS server support NFS server support for NFS version 4 (EXPERIMENTAL) -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html