Okay while I can reproduce this issue on my site dcache, I confirm it is fixed on prometheus.desy.de so presumably it should work if I upgrade . Regarding username validation, you may be interested to know that in containers (docker/kubernetes) , often there is no user name. The UID is already arbitrary and meaningless (just like atlas053 on a traditional grid site) so there is only a UID with no name. ``` bash-4.2$ xrdcp root://prometheus.desy.de:/VOs/atlas/public-file . Line 32: xrdcp root://prometheus.desy.de:/VOs/atlas/public-file . [173B/173B][100%][==================================================][57B/s] bash-4.2$ id Line 33: id uid=1000 gid=1000 groups=1000 bash-4.2$ whoami Line 34: whoami whoami: cannot find name for user ID 1000 ``` -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/xrootd/xrootd/issues/1202#issuecomment-771255504 ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-DEV list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-DEV&A=1