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    RAL Tier1 Experiments Liaison Meeting

    → Europe/London
    Access Grid (RAL R89)

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    RAL R89
    RAL Tier1 Experiments Liaison Meeting
    Zoom Meeting ID
    66811541532
    Host
    Alastair Dewhurst
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      • 14:00 → 14:01
        Major Incidents Changes 1m
      • 14:01 → 14:02
        Summary of Operational Status and Issues 1m
        Speakers: Brian Davies (Lancaster University (GB)), Darren Moore (Science and Technology Facilities Council STFC (GB)), Kieran Howlett (STFC RAL)
        Weekly Report 17 January 2024.docx
        Weekly Report 17 January 2024.pdf
      • 14:02 → 14:03
        GGUS /RT Tickets 1m

        https://tinyurl.com/T1-GGUS-Open
        https://tinyurl.com/T1-GGUS-Closed

      • 14:04 → 14:05
        Site Availability 1m

        https://lcgwww.gridpp.rl.ac.uk/utils/availchart/

        https://cms-site-readiness.web.cern.ch/cms-site-readiness/SiteReadiness/HTML/SiteReadinessReport.html#T1_UK_RAL

        http://hammercloud.cern.ch/hc/app/atlas/siteoverview/?site=RAL-LCG2&startTime=2020-01-29&endTime=2020-02-06&templateType=isGolden

      • 14:05 → 14:06
        Experiment Operational Issues 1m
      • 14:15 → 14:16
        VO Liaison CMS 1m
        Speaker: Katy Ellis (Science and Technology Facilities Council STFC (GB))

        CMS SAM tests stopped working over the weekend. RAL did not go into drain but a few sites did for a few hours. 

        Token deployment on gateways has started. Jyothish found another bug which he has patched. 

        Multi-VO testing happening on writes to Echo.

        CVMFS SAM tests still failing despite the kernel upgrade - to be followed up.

      • 14:16 → 14:17
        VO-Liaison ATLAS 1m
        Speakers: James William Walder (Science and Technology Facilities Council STFC (GB)), Jyoti Prakash Biswal (Rutherford Appleton Laboratory)
        • GGUS-164926:
          • RAL-LCG2_MCTAPE staging errors: Transfer failed because no bytes have been received in 120 seconds; solved.
          • Triggered by the CTA downtime on 15 January -- GOCDB:34931.
          • An intra-site internal routing configuration change resolved the underlying cause of these failed transfers -- solved within the same day!

         

        • GGUS-164676:
          • RAL-LCG2: Enable token support for storage; in progress.
          • Token generation and manual tests on the virtual machine succeeded.
          • svc21-svc25 to be deployed in prod.
            • After the success, the ticket could be closed (along with its CMS counterpart).

         

        • Outcome of DC24 FTS @RAL on 16 January 2024:
          • ATLAS 5/1000 failures --> Error reason: No FTS server has updated the transfer status the last 900 seconds. Probably stalled
          • CMS and LHCb did not have any failures.
          • Deletion tests were performed successfully.
          • Retests w/ ATLAS 200 parallel transfers.
          • Link to notes.

         

         

        • Jamboree UK Cloud talk.

         

        • GridPP51 ATLAS talk (26-27 March 2024).

         

        • Upcoming downtime for EOS5 and CTA upgradation: 23 January 2024 (09:00-14:00 hrs); GOCDB:34955.
      • 14:20 → 14:21
        VO Liaison LHCb 1m
        Speaker: Alexander Rogovskiy (Rutherford Appleton Laboratory)
        slides.pdf

        Operational issues:

        • Antares outage last Saturday
        • Some upload issues on Tuesday night
        • nasty xrootd bug removed last Friday
      • 14:25 → 14:28
        VO Liaison LSST 3m
        Speaker: Timothy John Noble (Science and Technology Facilities Council STFC (GB))
      • 14:30 → 14:31
        VO Liaison Others 1m
      • 14:31 → 14:32
        AOB 1m
      • 14:32 → 14:33
        Any other Business 1m
        Speakers: Brian Davies (Lancaster University (GB)), Darren Moore (Science and Technology Facilities Council STFC (GB))