So, it would seem the culprit is here: tat("/cms/data/store/mc/SAM/GenericTTbar/AODSIM/CMSSW_9_2_6_91X_mcRun1_realistic_v2-v1/00000/CE860B10-5D76-E711-BCA8-FA163EAA761A_cmsuf.root", 0x7fb3979f3950) = -1 EACCES (Permission denied) The redirector doesn't have access permissions. Is the directory/file owned by the user running the cmsd? -- 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/1098#issuecomment-564282812 ######################################################################## 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