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Dear XRootD experts, After upgrading SEs to XRootd v5 at Nebraska, we ran into checksum issues with xrootd-hdfs. The plugin could no longer locate checksum files, as it was looking for the LFN, rather than the PFN. There appears to be a change in checksum plugin behavior in v5 with this commit: https://github.com/xrootd/xrootd/commit/b3625f9d67 It changes the ossCksio default to true, which sets CksPfn to false. Then XrdOfs::chksum no longer converts LFN to PFN before calling Cks->Calc() and Get(). I'm testing a workaround inside of xrootd-hdfs (calling lfn2pfn), but this doesn't seem like the correct approach. The XrdCks headers still describe the Calc(), Get(), etc. function arguments as getting a PFN. I'm happy to work on a PR, but need help to find the starting point. Regards, John ######################################################################## 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