The CERN Tape Archive (CTA) project is a new tape system that will provide a tape backend to EOS.
Prepare was failing in client_ar.sh because of a typo in KrB5CCNAME, adding -s to prepare as by xrootd definition we are staging files to disk and not discovering them.
The CERN Tape Archive (CTA) project is a new tape system that will provide a tape backend to EOS.