LISTSERV 16.5 - XROOTD-DEV Archives

Note: For some reason the redirector also calculates checksums from time to time (not sure why).
Here things take a little bit longer, but still below 1 minute:

2022-07-21 16:54:25,230 [xrdsum]  DEBUG: No checksum found in metadata (user.xrdsum.adler32) for file /xrootd/cms/store/mc/RunIISummer20UL16RECO/BsToKKMuMu_TuneCP5_13TeV-pythia8-evtgen/AODSIM/106X_mcRun2_asymptotic_v13-v2/70000/4AB754E5-7109-D74C-99F9-91FD76BA0972.root: At least one of the attributes provided was not found.
2022-07-21 16:54:25,230 [xrdsum]  TIMING: HDFS get_xattr took 0.006s for /xrootd/cms/store/mc/RunIISummer20UL16RECO/BsToKKMuMu_TuneCP5_13TeV-pythia8-evtgen/AODSIM/106X_mcRun2_asymptotic_v13-v2/70000/4AB754E5-7109-D74C-99F9-91FD76BA0972.root
2022-07-21 16:54:25,242 [xrdsum]  DEBUG: Reading /xrootd/cms/store/mc/RunIISummer20UL16RECO/BsToKKMuMu_TuneCP5_13TeV-pythia8-evtgen/AODSIM/106X_mcRun2_asymptotic_v13-v2/70000/4AB754E5-7109-D74C-99F9-91FD76BA0972.root in chunks of 134217728 bytes (out of 2832177462)
2022-07-21 16:54:56,894 [xrdsum]  TIMING: HDFS checksum calculation took 31.664s for /xrootd/cms/store/mc/RunIISummer20UL16RECO/BsToKKMuMu_TuneCP5_13TeV-pythia8-evtgen/AODSIM/106X_mcRun2_asymptotic_v13-v2/70000/4AB754E5-7109-D74C-99F9-91FD76BA0972.root
2022-07-21 16:54:56,894 [xrdsum]  TIMING: HDFS checksum took 31.684s for /xrootd/cms/store/mc/RunIISummer20UL16RECO/BsToKKMuMu_TuneCP5_13TeV-pythia8-evtgen/AODSIM/106X_mcRun2_asymptotic_v13-v2/70000/4AB754E5-7109-D74C-99F9-91FD76BA0972.root
2022-07-21 16:54:56,902 [xrdsum]  DEBUG: No checksum found in metadata (user.xrdsum.adler32) for file /xrootd/cms/store/mc/RunIISummer20UL16RECO/BsToKKMuMu_TuneCP5_13TeV-pythia8-evtgen/AODSIM/106X_mcRun2_asymptotic_v13-v2/70000/4AB754E5-7109-D74C-99F9-91FD76BA0972.root: At least one of the attributes provided was not found.
2022-07-21 16:54:56,957 [xrdsum]  TIMING: Storing checksum took 0.063s for /xrootd/cms/store/mc/RunIISummer20UL16RECO/BsToKKMuMu_TuneCP5_13TeV-pythia8-evtgen/AODSIM/106X_mcRun2_asymptotic_v13-v2/70000/4AB754E5-7109-D74C-99F9-91FD76BA0972.root

I cannot find a similar entry on the disk server, but I can see the entries in the xrootd.log.

What are the rules here? Why is the redirector doing any checksumming?
Both machines have the lines

ofs.tpc cksum adler32 fcreds ?gsi =X509_USER_PROXY autorm xfr 40 pgm /etc/xrootd/xrdcp-tpc.sh
xrootd.chksum max 100 adler32 /etc/xrootd/xrdsum.sh

As an experiment, I've now removed these lines from the redirector.

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