xrootd 4.9.1 available in OSG testing repo and EPEL. Working with OU to configure x509 delegated proxy. (Doing this with 4.9.1 because the previous version, 4.9.0 broke their GridFTP)

Working with ECHO to understand why TPC to ECHO is not working. Two possibilities: TPC was not correctly configured; or xrdcp instance (inside TPC) can not deal with xrootd's GSI and "sss" security at the same time (unlikely). In either case, the problem can be addressed by configuration.

EOS no longer want to use xrootd redirect to separate their TPC operation. Asking them regarding their plan.