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

Videoconference
WLCG DOMA BDT Meeting
Zoom Meeting ID
69074333781
Host
Petr Vokac
Useful links
Join via phone
Zoom URL

Merged to xrootd fixes for how it handles tokens for the scope.create

  • now prevents any destructive actions
    • necessary to implemented renames correctly with posix backend
  • code merged last week - hopefully by next week deployed on testbed
    • XRootD and EOS instance used for compliance tests is not currently available

FTS

  • large refactoring for EGI Check-in + also integration of CILogon
    • running token tests with dCache
  • require scopes in the offline token
    • without scopes FTS use introspection - best effort
    • subject + scope -> delegation id (distinguish read/write activity)
      • add issuer
      • add audience(?)
    • in the future EGI tokens will also include specific scopes
  • WLCG vs. AARC profile
    • WLCG profile contain wlcg.ver scope
  • we need dedicated meeting Rucio + FTS + WLCG AuthZ
    • FTS & tokens briefly discussed during WLCG AuthZ meeting
    • token handling refactoring in FTS -> several topics that needs to be clarified

Rucio

  • token testbed soon
  • deletion did not work - minor update soon
  • start work on tokens in summer by new rucio developer
    • uploads / downloads / deletions
    • improvements planned also for token submission to FTS

TAPE REST

  • FNAL will provide dCache REST implementation after next week dCache workshop
  • gfal2 2.21 release with TAPE REST support in ~ two weeks

Packet marking

  • Nebraska would like to join testbed with their XRootD

AOB

  • more inteligent FTS & HTTP-TPC pull/push/stream fallback
    • require propagation of HTTP code back to the TPC client (FTS)
    • details in the attached slides
There are minutes attached to this event. Show them.
    • 4:30 PM 4:35 PM
      Hot topics 5m

      Advertisement: successful DPM to dCache migration in less than 24 hours of 5PB production storage with 50M objects (files & directories) ... this is the most simple way to get reasonable WLCG JWT token support for "DPM" (more ads June GDB)

    • 4:35 PM 4:50 PM
      Token Authorization testbed 15m
      Speaker: Francesco Giacomini (INFN CNAF)
    • 4:50 PM 5:05 PM
      Tape REST access 15m
      Speaker: Cedric Caffy (CERN)
    • 5:05 PM 5:20 PM
      Packet marking 15m
      Speakers: Marian Babik (CERN), Shawn Mc Kee (University of Michigan (US))

      Three items for today:

      • We are planning the next packet marking meeting for June, please fill out the Newdle poll:  https://newdle.cern.ch/newdle/zbM9rL3b
      • Tristan Sullivan has been testing packet marking via eBPF and initial results are very encouraging
        Idle Cpu Available Memory Interrupts / second Throughput Retransmits
      Server, no eBPF 88.27% 115 G 115447    
      Server, eBPF 86.65% 115 G 117443    
      Client, no eBPF 77.40% 246 Gi 336667 92.9 Gbps 0
      Client, eBPF 74.77% 246 Gi 342910 92.8 Gbps 0

       

      • Meeting with dCache to discuss packet marking / flow labeling on Friday

      See project information at https://www.scitags.org/ 

    • 5:20 PM 5:30 PM