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Meeting with CMS

→ Europe/Zurich
31/S-027 (CERN)

31/S-027

CERN

10
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    • 16:30 → 16:50
      Proposed EOS/CTA production setup: Hardware, capacity, configuration 20m
      Speaker: Julien Leduc (CERN)
      CTA deployment status at CERN
    • 16:50 → 17:10
      Migration of CASTOR metadata 20m
      • Analysis of CASTOR/CMS namespace (directories, files, users, groups, etc)
      • handling special cases (symlinks, POSIX permissions/ACL's, zero-length files, empty directories)
      • Read-only pre-import onto EOSCTA for validation
      • Migration milestones
      Speaker: Michael Davis (CERN)
      Migration_CMS.pdf
    • 17:10 → 17:30
      Current CASTOR use cases and their translation into CTA 20m

      Which ones will be taken over by Rucio and which ones will require direct EOS/CTA access? :-
      - pit->T0 transfers
      - QA checks
      - local users with CASTOR home directories

    • 17:30 → 17:50
      Others (time permitting) 20m

      CASTOR vs EOS/CTA configuration:
      - CMS service classes, file classes, tape pools in CASTOR; their equivalents in CTA and how to select/set them
      - CMS CASTOR migration and recall policies and their equivalents in CTA

      FTS specifics for CTA:
      - disk buffer eviction, request canceling, handling GC, checking for tape residency

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