Week of 150504

WLCG Operations Call details

  • At CERN the meeting room is 513 R-068.

  • For remote participation we use the Vidyo system. Instructions can be found here.

General Information

  • The purpose of the meeting is:
    • to report significant operational issues (i.e. issues which can or did degrade experiment or site operations) which are ongoing or were resolved after the previous meeting;
    • to announce or schedule interventions at Tier-1 sites;
    • to inform about recent or upcoming changes in the experiment activities or systems having a visible impact on sites;
    • to provide important news about the middleware;
    • to communicate any other information considered interesting for WLCG operations.
  • The meeting should run from 15:00 until 15:20, exceptionally to 15:30.
  • The SCOD rota for the next few weeks is at ScodRota
  • General information about the WLCG Service can be accessed from the Operations Web
  • Whenever a particular topic needs to be discussed at the daily meeting requiring information from site or experiments, it is highly recommended to announce it by email to wlcg-operations@cernSPAMNOTNOSPAMPLEASE.ch to make sure that the relevant parties have the time to collect the required information or invite the right people at the meeting.



  • local: Ian (IT-PES), Luca (IT-DB), AlessandroDiG (ATLAS), Maarten (ALICE), Xavi (IT-DSS+SCOD)
  • remote: Felix (ASGC), Lisa (FNAL), IN2P3 (Rolf), Sang-Un (KISTI), Dimitri (KIT), Ulf (NDGF), Onno (NL-T1), Rob (OSG), Pepe (PIC),

Experiments round table:

  • ATLAS reports (raw view) -
    • Central Services
      • FTS server - client communication issue, timeouts, is affecting ATLAS badly. There was a request from FTS3 devs to upgrade FTS servers, can FTS3 service managers clarify?
        • Upgrade will be performed in PPS at RAL(Tue) and CERN (Wed) and put in PROD on Thursday.
      • RAL Frontier down, GGUS:113409 - solved, thks.

  • CMS reports (raw view) -
    • This week is CMS and therefore almost for sure nobody can join the call
    • New xrootd re-director for Tier-0 name space in EOS seems to need a port opening in the fire wall, GGUS:113032 (at the very end)
      • Not clear why this causes trouble with files out side of the Tier-0 name space
    • Please send a mail to Christoph, if there is the need to followup something

  • ALICE -
    • mostly high activity
    • KIT: team ticket GGUS:113438 opened on Sat because of network issues (solved)

Sites / Services round table:

  • ASGC: ntr
  • BNL: np
  • CNAF: np
  • FNAL: SIR report submitted (unrecoverable data loss in dCache 15th/April)
  • GridPP: np
  • IN2P3: ntr
  • JINR: np
  • KISTI: ntr
  • KIT: np
  • NDGF (mail form Ulf): Atlas unevenly hit our tape write systems, causing one of them to overload. It got turned RO on Thursday evening to even it out, and that then fixed the problem during the weekend. FI_HIP_T2 for CMS is also seeing the FTS "upload-timeout-reupload-delete" issue in their logs, so it's not only Atlas. (It's quite easy to spot the pattern in the dcache billing log)
  • NL-T1: ntr
  • NRC-KI: np
  • OSG: ntr
  • PIC: ntr
  • RAL: np
  • TRIUMF: np

  • CERN batch and grid services:
    • FTS fts3.cern.ch upgrade fts-server 3.2.32 -> 3.2.33 08:00 UTC Wednesday 6th May. A 2 or 3 minute downtime. This is the version running on the pilot for sometime.
  • CERN storage services:
    • EOSATLAS namespace unavailable for about an hour (9h40 to 10h40). The reason was a corrupted entry on the namespace metadata.
  • Databases: ntr
  • GGUS:
    • Network issues at KIT on Monday at 14:30. The network experts are looking into it
  • Grid Monitoring:
  • MW Officer:




  • local:
  • remote:

Experiments round table:

  • ALICE -

Sites / Services round table:

  • ASGC:
  • BNL:
  • CNAF:
  • FNAL:
  • GridPP:
  • IN2P3:
  • JINR:
  • KISTI:
  • KIT:
  • NDGF:
  • NL-T1:
  • NRC-KI:
  • OSG:
  • PIC:
  • RAL:

  • CERN batch and grid services:
  • CERN storage services:
  • Databases:
  • GGUS:
  • Grid Monitoring:
    • Draft availability reports for April sent, and available at the SAM3 UI
  • MW Officer:


This topic: LCG > WebHome > WLCGCommonComputingReadinessChallenges > WLCGOperationsMeetings > WLCGDailyMeetingsWeek150504
Topic revision: r11 - 2015-05-04 - MaartenLitmaath
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