This repository is an experimental implementation of the Chord lookup service and the cooperative file system (CFS). The software is organized as follows: chord/ - This directory implements the core of the chord lookup service. libchord.a implements the API defined in chord.h to maintain routing tables, add/remove nodes from the network, route simple queries. libchord also provides a node-to-node RPC service based on SFS asynchronous RPC. dhash/ - DHash depends on chord and builds a replicated block store on the basic Chord primitive. lsd/ - lsd is the Location Service Daemon. It instantiates the Chord and DHash layers and accepts requests from clients over a UNIX domain socket. tools/ - testing and performance tools svc/ - protocol files for the above programs This software is experimental and under active development. Please send bug reports/fixes to chord-dev@pdos.lcs.mit.edu.