CTA deployment meeting

Europe/Zurich
600/R-001 (CERN)

600/R-001

CERN

15
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Michael Davis (CERN)
    • 14:00 14:10
      Repacking tapes on CASTOR 10m

      Status update on repack operations in preparation for migration:

      ATLAS Cleanup

      • grid_atlas fileclass has been repacked to 5 tapes
      • ATLAS broken tapes are in migration tapepool

      NA62

      • NA62 dual copy (na62dual fileclass). Repack ongoing, out of ~330 tapes, 100 are done. This will take another 3
        weeks or so. As NA62 is recalling files on the CASTOR PUBLIC stager, this automatically creates 2nd copy as well.
      • NA62 single copy (public_userna62 fileclass), /grid namespace: file classes assigned, tapes identified. Will be repacked at the same time as public_user.

      Public User

      • Michael and Giuseppe are cleaning up
      • As we have to repack public_user in any case for NA62, we will try to clean up the /user part of the namespace beforehand as much as possible.

      See #878: Clean up CASTOR /user namespace prior to CTA migration

    • 14:10 14:20
      ATLAS Cleanup 10m
      • EOSATLAS → EOSCTAATLAS throughput test (28/9). Coordinated by Maria.
    • 14:20 14:30
      Getting ALICE into Production 10m
      • See Putting EOSCTAALICE into Production
      • See #55 ALICE instance in production

      • Luca will release hardware mid-September

      • Test migration next week
      • Wed 30 Sept. eosctaalicero instance will be switched off and retired
      • Thu 1 Oct. Switch off write access to CASTOR ALICE
      • Mon 5 Oct. Block all access to CASTOR ALICE namespace, begin migration to CTA
      • Mon 12 Oct. EOSCTA ALICE in production
      • CASTOR T0ALICE will be returned to the ALICE pledge
    • 14:30 14:40
      Getting LHCb into Production 10m
      • See Putting EOSCTALHCB into Production (CodiMD)
      • Julien has started Dirac integration with Christophe Haen (15/09/2020)
      • Can we use multi-hop DAQ → EOS LHCb to avoid the problem of export to T1s?
      • Christophe said (02/07/2020) "I believe we will do without multi-hop in FTS, as per our last discussion." but later said (24/08/2020) "The implementation for the pit export still needs to be refined, but this will anyway go first to EOSLHCb, so no direct impact on CTA once we are sure that EOSLHCb and CTA can talk to each other." This workflow needs to be clarified.
      • TPC to T1s: Transfers to Gridka and the other dCache sites will be possible using XRootD TPC with delegation of credentials. Chris said, "...then nothing will prevent us anymore from using xroot as third party, providing it's deployed everywhere (and I really mean everywhere)". However, it will not be deployed everywhere. CNAF use StoRM and will not support this, they will support HTTP TPC. Christ said (25/08/2020), "For CNAF, since we have nothing special with respect to the other VOs there, I rely on the TPC task force to make it work there." Can LHCb handle some transfers with XRoot and some with HTTP?
      • Meeting with Christophe w/c 21/09/2020
    • 14:40 14:50
      Getting CMS into Production 10m

      Status updates

      • Multi-hop test (w/c 07/09/2020) - OK
      • M-bit test (23/09/2020)

      • Which CMS tapes need to be repacked before migration? (grid_cms fileclass)

      • EOS to CASTOR archiving tools used by CMS?
    • 14:50 15:00
      Getting PUBLIC into Production 10m
      • Migration of SMEs from CASTOR to CTA, see Putting EOSCTAPUBLIC into Production
      • NA62 online integration (all done except m-bit test)
      • NA62 offline integration (T0M, with or without FTS?)
      • NA62 migration test (after repack of public_user?)
      • New EOSCTA PPS migration instance will be used for ALICE migration test, NA62 migration test and NA62 recall tests
    • 15:00 15:10
      CTA Repack 10m
      • Status update
      • Blocking issues
    • 15:10 15:20
      RAO 10m

      Status updates:

      • RAO for LTO (Paul's work)
      • RAO for IBM LTO-9
    • 15:20 15:25
      AOB 5m