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Hi, I am from Vanderbilt University trying to hook up the Vanderbilt/UT- Knoxville L-Store/IBP storage backend to xrootd. basically IBP is a bit-torrent like distributed data-storage system, LORS adds some file-system functionality analogous to inodes, and the new Vanderbilt L-Store is an SRM complient meta-data layer on top of IBP. I have been playing with the latest development version of xrootd downloadable from the web: xrootd-20060523-1741.src.tgz I initially want to do a very simple file streaming test of a root file on ibp. I'm not an expert on posix i/o but I think I need only use my posix-complient methods: int fd = xio_open(my_uri, O_RDONLY); and xio_read(fd, buffer, bufsize) I need then 2 things from xrootd: 1. location of the posix i/o calls I should modify ie. where is an xrootd posix open() call I can replace with xio_open() ie. and then and xrootd posix read() call I can replace with xio_read() 2. how do I launch xrootd to use my modified xrootd module 3. how do I use root to call this xrootd/ibp streamed file. I've tested my lors/ibp libs with a simple c++ Hello IBP-world program. And I can compile IBP libs into xrootd and get things like an xrootd init() call to call xio_open() xio_read() and print out a hello-ibp message. Now I just need the correct place in xrootd to put in my ibp io commands. Eventually I'd like to make xrootd recognize a couple of protocols named: lors:// and lstore:// but for now I can masquerade as some other protocol and just set up an xrootd service that is hard-coded to only look into its IBP setup. thanks for any suggestions on how to get the latest code and trying some things out, Dan