Hi Geonmo,
I am looking at log_20190228/failed/fallback_20190228091609. It looks like you are running on cms-t2-wn1047.sdfarm.kr, and trying to copy a file
root://cmsxrootd.fnal.gov//store/test/xrootd/T2_BE_IIHE/store/mc/SAM/GenericTTbar/AODSIM/CMSSW_9_2_6_91X_mcRun1_realistic_v2-v1/00000/A64CCCF2-5C76-E711-B359-0CC47A78A3F8.root
The client was redirected to maite.iihe.ac.be:1094, successfully authenticated using GSI (see line 142), and then was sent to [2001:6a8:1080::b:92]:20341 (line 155). At there, the client seems to have successfully opened the file (line 158).
After this, the log show that the client was sent to cms-xrd-transit.cern.ch:1094 for some reason (line 183). Unfortunately there is no info in between. So can you running the copy command manually?
xrdcp -d 3 -f root://cmsxrootd.fnal.gov//store/test/xrootd/T2_BE_IIHE/store/mc/SAM/GenericTTbar/AODSIM/CMSSW_9_2_6_91X_mcRun1_realistic_v2-v1/00000/A64CCCF2-5C76-E711-B359-0CC47A78A3F8.root /dev/null
and see what happen?
--
Wei Yang | [log in to unmask] | 650-926-3338
________________________________________
From: [log in to unmask] <[log in to unmask]> on behalf of "Geonmo Ryu" <[log in to unmask]>
Sent: Thursday, May 16, 2019 1:32 AM
To: xrootd-l
Subject: About XRootD Global Redirector test
Hello, XRootD experts,
We operated a CMS Tier-2 Center for CERN's CMS experiments.
All CMS Tier-2 centers participating in this experiment must pass a monitoring system called SAM3.
We are constantly experiencing one of the problems in this checking process.
At a problematic test, it checked the remote data accessibility through global redirector of CMS/
It is set to download only a part of the file, so the actual amount transferred is very small, about a few MB.
Therefore, the task is configured to finish within 240 seconds (4 minutes).
I have found that this test is successful in some cases and that some tasks fail.
When I looked at the failed jobs, I noticed that the following job redirection through the Global Redirector.
After finding the final XRootD Server, it re-scanned the redirector server from Global XRootD Redirector again.
We were able to see that it restarted without any distinguish message.
- T2_BE_IIHE
cmsxrootd.fnal.gov:1094 -> cms-xrd-global.cern.ch:1094 -> xrootd.ba.infn.it:1094 -> maite.iihe.ac.be:1095 -> maite.iihe.ac. be: 1094 -> [2001: 6a8: 1080 :: b: 92]: 20341 -> cmsxrootd.fnal.gov:1094 -> cms-xrd-global.cern.ch:1094 -> ......
The only information we know that one packet can be lost when going out of our center.
When I tried to send a packet to the sites through the "MTR" program, I could see that only one packet disappeared.
I suspect that this one packet makes a rescanning from the beginning point.
If you have any information to resolve this problem, please let me know how to that.
Regards,
--------------------------------------------------------------------------------------------------
Geonmo Ryu / ·ù°Ç¸ð
Korea Institute of Science and Technology Information (KISTI)
Global Science Experimental Data Hub Center (GSDC)
245 Daehak-ro, Yuseong-gu, Daejeon, 305-806, Republic of Korea
Tel : +82-42-869-1639, +82-10-4337-9423
Mail : [log in to unmask] / [log in to unmask]
--------------------------------------------------------------------------------------------------
________________________________
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
########################################################################
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
|