WLCG DOMA BDT Meeting

Wednesday 4 May 2022, 16:30 → 17:30 Europe/Zurich

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

Topic: WLCG DOMA BDT Meeting

1 Hot topics

2 Token Authorization testbed

Speaker: Francesco Giacomini (INFN CNAF)

FTS / gfal2 updates to support IPv6 vs. IPv4 monitoring for HTTP-TPC

• rely on RemoteConnections data from HTTP-TPC performance markers
  • progress with HTTP-TPC in DMC-1311
  • status of xroot protocol tracked in DMC-1016
• these data still not available in StoRM implementation
• available in dCache 6.2.28, XRootD 5.0, DPM 1.14.0, EOS, Echo

Add storage.*:/path tests in compliance testsuite

3 Tape REST access

Speaker: Cedric Caffy (CERN)

WLCG Tape REST API reference doc.pdf

Final specification for TAPE REST API 1.0

Server / client status

• CTA @ CERN
  • version "0" presented at EOS workshop running on development instance
  • minor differences with respect to final 1.0
  • should not take too much time to come with full 1.0 implementation
  • made available early so FTS / gfal2 developers can implement and test TAME REST API
• dCache
  • final 1.0 standard already implemented and 2/3 of code already in master branch
  • remaining patches in review
    • this can still take some time
    • can provide snapshot with full 1.0 implementation
      • to test FTS / gfal2 client implementation
• StoRM
  • trying to find right technology for implementation
  • would like to use new gfal to manually test API during development
    • it'll take one or two weeks to merge all recent gfal2 updates and come with official release
• FTS / gfal2
  • most of required functionality already added in gfal2
    • extended gfal http plugin (staging, archive, evict, ...)
    • currently tested with CTA, but developers would like test also with dCache
  • still some development necessary on FTS side

All server / client implementations designed to work with X.509 VOMS proxy and also tokens

• add to compliance test-suite once gfal2 developers try their implementation also with dCache
• include gfal2 client in compliance tests and not just curl to test server side

4 Packet marking

Speakers: Marian Babik (CERN), Shawn Mc Kee (University of Michigan (US))

• packet marking meeting tomorrow at 16:00
• updated at HEPiX last week
• UK preparing new testbed with dedicated collector for fireflies
  • configure XRootD native implementation
  • flowd can be used for any storage with disknodes / doors dedicated to specific VO
    • limited functionality - no distinction for transfer activity
    • deployed at AGLT2

5 AOB