WLCG DOMA BDT Meeting

Europe/Zurich
Brian Paul Bockelman (University of Wisconsin Madison (US)), Maria Arsuaga Rios (CERN), Petr Vokac (Czech Technical University in Prague (CZ))
Description

Topic: WLCG DOMA BDT Meeting (twiki)

Videoconference
WLCG DOMA BDT Meeting
Zoom Meeting ID
69074333781
Host
Petr Vokac
Useful links
Join via phone
Zoom URL
    • 4:30 PM 4:35 PM
      News 5m

      You can add your contribution to the existing section or if you have different / bigger topic to discuss please let us know before this meeting and we can created dedicated slot for your contributions.

       

      Cancelled due to conflicting DC24 Ops meeting

       

      Small topics that might be discussed in this meeting

      • dCache 9.2.x and xrootd.root door configuration behavior
        • fixed in 9.2.8
      • WLCG Ops: EGI GOCDB downtime for TAPE service (GGUS:165354)
        • SRM.nearline no longer makes sense for WebDAV endpoints with TAPE REST
        • we need new GOCDB "Service Type"
        • we need same functionality also in OSG Topology downtime
        • start discussion with CRIC developers + OSG responsible to find best way for future
          • we really don't wan't to keep SRM.nearline just to be able to declare downtime for TAPE
      • Alma9 xrd client & sites with Root CA signed by SHA1
        • we concluded in issue#2150 XRootD should make CA validation compatible with other aplications (ignore signature on self-signed root CA)
        • see proress in this ticket
      • gfal2 cleanup of old dependencies (Alma9)
        • openldap-compat which is used only by LFC and optionally by SRM(?)
        • make also globus (SRM) dependencies optional?
      • FTS optimizer values (different for ATLAS vs. CMS vs. Pilot instance, but same behavior for HTTP-TPC)
        • The FTS Optimizer has two step sizes when increasing connections on the link
          • A conservative step size (default 1, configurable, "OptimizerIncreaseStep" setting), when the Optimizer is set to mode "1"
          • An aggressive step size (default 2, configurable, "OptimizerAggressiveIncreaseStep" setting), when the Optimizer is set to mode "2"
        • Then, the difference between mode "2" and mode"3" is how the number of actives is calculated:
          • In mode "2", number of actives on the link = number of transfers on the link
          • In mode "3", number of actives on the link = number of TCP streams on the link. This was valid in the times of GridFTP, but for HTTP, every transfer only uses one stream
          • In essence, not much difference between mode "2" and mode "3".
        • Optimizer documentation? Link?
      •  
      • topics with low priority:
      • switch gfal default HTTP library from libneon to libcurl
      • disable grid proxy delegation during FTS HTTP-TPC (by default?)
      • Do we need condor_test_token equivalent for storage?
      • dCache: authzdb -> multimap + omnisession migration issue#6607
      • dCache: removing internal dependencies on SRM space manager -> transition to dCache quotas
      • reminders about existing (HTTP-TPC) related issues
        • dCache: HTTP-TPC performance markers and RemoteConnections dCache#7441
          • different performance markers types? (start, connection established, connection closed, finish, ...)
        • StoRM: no support for RemoteConnections in performance markers (ticket?)
        • StoRM: Forbidden TPC push transfers on gclouds platform (STOR-1563)
        • StoRM: support for "stat" with storage.create and storage.modify STOR-1600
    • 4:35 PM 4:55 PM
      Transfers with tokens 20m
      Speakers: Petr Vokac (Czech Technical University in Prague (CZ)), Francesco Giacomini (INFN CNAF)
    • 4:55 PM 5:05 PM
      Tape REST access 10m
      Speaker: Mihai PATRASCOIU (CERN)

      TAPE REST & Tokens

      • status of storage.stage:/ implementations?

      ATLAS progress

      • Found an issue with non-default webdav.root (issue#7506)
        • affected sites: PIC, IN2P3-CC, NDGF
      • Status:
        • sites with TAPE rest in production
          • CTA: CERN, RAL
          • dCache: FZK, DESY-HH (T2), BNL-OSG2
        • sites with TAPE rest available
          • dCache (but see issue#7506): IN2P3-CC, NDGF-T1, PIC
          • StoRM: INFN-T1
        • sites without configured TAPE REST
          • dCache: SARA-MATRIX, TRIUMF-LCG2
        • sites with old SE
          • dCache 7.x: RRC-KI-T1
        • we would like to move forward with TAPE REST deployment after DC24, details
          • CERN-PROD (REST) - production (April 2023)
          • BNL-OSG2 (REST) - production (February 2024)
          • FZK-LCG2 (REST) - production (March 2023)
          • IN2P3-CC (REST)
          • INFN-T1 (REST)
          • NDGF-T1 (REST) - they would like to test ENDIT with SRM before moving to REST (January 2024)
          • PIC (REST)
          • RAL-LCG2 (REST) - production (~ May 2023)
          • RRC-KI-T1 (REST) - old dCache 7.x
          • SARA-MATRIX (REST) - REST JSON not yet configured
          • TRIUMF-LCG2 (REST) - REST JSON not yet configured
    • 5:05 PM 5:15 PM
      Packet marking 10m
      Speakers: Marian Babik (CERN), Shawn Mc Kee (University of Michigan (US))
    • 5:15 PM 5:25 PM
      WebDAV Error Message Improvement Project & unified error message format 10m

      Discuss with experts improvements in the error messages produced by failed transfers.
      https://twiki.cern.ch/twiki/bin/view/LCG/WebdavErrorImprovement

      Speaker: Stephan Lammel (Fermi National Accelerator Lab. (US))
    • 5:25 PM 5:30 PM
      AOB 5m