AFS weekly meeting

Monday 2 May 2016, 14:00 → 15:00 Europe/Zurich

31/1-012 (CERN)

AFS service/operation meeting

AFS service meeting 2016-05-02

present: Dan, Massimo, Jan

Issues

• several stuck servers last week - new "wave" of incidents?
• one "too-many-vos" on a fileserver (afs280)  as opposed to the usual afsadm2/afscron1 - seems to have been due to backups ("vos backupsys") (and might have gotten them stuck). Were from Apr 27/Apr 28, eventually manually  killed Tue 3rd
• seen from "missing backups" - aborted "vos release" since several days on p.sw.lcg.releases (200GB, got replica in Wigner - recently auto-added?). manually redone
• set up testcell server for 1.6.18-pre1, looks OK.

Discussion:

• CVMFS versus fast-changing content (nightly/15minutely)
  • Dan is waiting for size/latency/churn requirements from experiments (mail from Jan)
  • June workshop in RAL - need to be on same page as Jakob - what "parameter space" is CVMFS useful for, where can it be developed into, what is really a bad idea?
    • Dan / Jakob are in contact
    • CERN usage of CVMFS might affect T1s (faster sync etc)
  • "secure" CVMFS for distributing restricted content (not primary use case - Intel compilers and such),  Brian Bockelman has developed something?