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OK, I found it and fixed. Still I doubt that it worked in the older version, but anyway... The copied file was OK. It was just the final check on the number of copied bytes which was broken for files bigger than 4G. That is what code 13 is supposed to mean. Thank you for the precise report. Fabrizio ---------- before furano@pcitdm07 9:47:53 ~/Park/xrootd>./bin/xrdcp -S 15 root://atlas-bkp2.cs.wisc.edu:1094//atlas/xrootd/atlasmcdisk/mc08/AOD/mc08.106051.PythiaZmumu_1Lepton.merge.AOD.e347_s462_s520_d153_r643_t53_tid078914/AOD.078914._000115.pool.root.1 AOD.root Set ParStreamsPerPhyConn to 15 [xrootd] Total 4996.48 MB |====================| 100.00 % [8.3 MB/s] furano@pcitdm07 9:58:47 ~/Park/xrootd>echo $? 13 ---------- now furano@pcitdm07 10:01:09 ~/Park/xrootd>./bin/xrdcp -S 15 root://atlas-bkp2.cs.wisc.edu:1094//atlas/xrootd/atlasmcdisk/mc08/AOD/mc08.106051.PythiaZmumu_1Lepton.merge.AOD.e347_s462_s520_d153_r643_t53_tid078914/AOD.078914._000115.pool.root.1 AOD2.root Set ParStreamsPerPhyConn to 15 [xrootd] Total 4996.48 MB |====================| 100.00 % [8.4 MB/s] furano@pcitdm07 10:11:48 ~/Park/xrootd>echo $? 0 Fabrizio Furano wrote: > Hi Wen, > > actually if the result code is 13, then xrdcp thinks that it did not > copy the right number of bytes. That looks strange to me, does it always > happen with big files? Also, could you please post the lenghts of both > the source and the destination files? > > Fabrizio > > wen guan wrote: >> Hi, >> >> When using this xrdcp to copy big files(about 5G), the return value >> is not 0, which caused some program thought the copy failed and >> crashed the job. Is it a bug? >> xrootd-20080828 doesn't have this problem. when using xrootd-20080828, >> the return value is 0. >> >> >> >> [c105] /home/wguan > xrdcp >> root://atlas-bkp2.cs.wisc.edu:1094//atlas/xrootd/atlasmcdisk/mc08/AOD/mc08.106051.PythiaZmumu_1Lepton.merge.AOD.e347_s462_s520_d153_r643_t53_tid078914/AOD.078914._000115.pool.root.1 >> >> AOD.root >> [xrootd] Total 4996.48 MB |====================| 100.00 % [94.4 >> MB/s] >> [c105] /home/wguan > echo $? >> 13 >> >> >> Regards >> Wen