For ATLAS production, data has to be registered in the DQ2 system. As ARC is not specifically integrated with DQ2, the registration is done "off-line" via a set of special tools that:
Dataset location is currently aliased as NDGFDISK
ATLAS client tools, such as dq2_get, map NDGFDISK to a Web service at cpt.uio.no, which receives file GUID on input and returns an XML-formatted physical location details after querying RLS.
It helps to make sure DQ2 libraries and tools are in all the necessary pathes, e.g.:
export LD_LIBRARY_PATH=/mylocation/dq2_0_2_11/:$LD_LIBRARY_PATH
export PYTHONPATH=/mylocation/dq2_0_2_11/:$PYTHONPATH
export PATH=/mylocation/dq2_0_2_11:$PATH
python dq2bulkreg.py <taskid>