I now checked in detail in Posix/OucCache implementation. In case missing file cache permissions, file can only be served directly. I added here link to code details of XrdPosixXroord::Open() and XrdPosixFile::Open(): https://github.com/alja/xrootd/blob/master/src/XrdPosix/XrdPosixXrootd.cc#L458 https://github.com/alja/xrootd/blob/master/src/XrdPosix/XrdPosixFile.cc#L147 You can see open will be successful in posix layer regardless of cache attach return value. In the file caching code I will make a fix, were I will make a clear log message about missing permission and let client to serve data directly from origin server. --- Reply to this email directly or view it on GitHub: https://github.com/xrootd/xrootd/issues/259#issuecomment-120488177 ######################################################################## 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