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Dear XRootD developers, At our site, we are able to get the checksum (adler32) of a file using https protocol and gfal-sum through a XRootD redirector (ccxrdrli01): $ gfal-sum https://ccxrdrli01.in2p3.fr:1097//xrootd/in2p3.fr/disk/dteam/ycalas/test3 adler32 https://ccxroot.in2p3.fr:1097//xrootd/in2p3.fr/disk/dteam/ycalas/test3 6e10cb37 However this does not work with the root protocol: $ gfal-sum root://ccxrdrli01.in2p3.fr:1097//xrootd/in2p3.fr/disk/dteam/ycalas/test3 adler32 gfal-sum error: 38 (Function not implemented) - Could not get the checksum (Function not implemented) I tried to add the following directive in the redirector configuration file (same directive used in our XRootD servers): xrootd.chksum adler32 /usr/share/xrootd/utils/xrdadler32-tpc.sh but I now get the following error message: $ gfal-sum root://ccxrdrli01.in2p3.fr:1097//xrootd/in2p3.fr/disk/dteam/ycalas/test3 adler32 root://ccxrdrli01.in2p3.fr:1097//xrootd/in2p3.fr/disk/dteam/ycalas/test3 Error_accessing I am able to get the checkum if I replace ccxrdrli01 (the redirector) by ccxrdli283 (one of our servers): $ gfal-sum root://ccxrdli283.in2p3.fr:1094//xrootd/in2p3.fr/disk/dteam/ycalas/test3 adler32 root://ccxrdli283.in2p3.fr:1094//xrootd/in2p3.fr/disk/dteam/ycalas/test3 6e10cb37 Is this behaviour expected? Is it possible to retrieve the checksum of a file through a redirector by using gfal-sum and the root protocol? Cheers, Yvan ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-L list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-L&A=1