Rucio Development Meeting

Thursday 21 Nov 2019, 15:00 → 16:30 Europe/Zurich

4/S-056 (CERN)

Martin Barisits (CERN)

15:00 → 15:10 News

• CEPC workshop

15:10 → 15:30 News from the experiments

• ATLAS
  • Heavy decomissioning
    • Injector issues --> running out of memory --> possibility to run in hospital mode
• CMS
• ESCAPE
  • Updated cluster to latest version
    • Some errors, posted on slack
  • Still issue with requests not being fetched
    • Migrated cluster to mysql
      • Worked for now
• Belle II
  • Planning for the next months
  • Migration aimed for summer, but needs to be discussed and confirmed with Belle 2
• MultiVO
• DUNE/Edinburgh
  •  Getting back into policy packages

15:30 → 15:50 Hot topics

RSEmgr

Maybe not a warm topic today but it will become hotter for the next reprocessing campaign in december:

• Pin leak found in FTS: For the Staging + transfer case, FTS creates two pins. One for bringonline and another for srmpreparetoget.  On transfer completion, only the pin generated by srmpreparetoget is released. The one from bringonline is kept. Tickets: https://its.cern.ch/jira/browse/FTS-1491  
• This impacts https://github.com/rucio/rucio/issues/3035: The pin lifetime from Rucio to FTS cannot be set to the rule lifetime as it will keep files for too long on the buffer.
• Now, the current default pin lifetime is too short and doesn't protect the files long enough: Files are staged several times, garbaged collected, etc before the final transfer. This also impact site performance in general  https://its.cern.ch/jira/browse/FTS-1492
• This affects all T1 dCache sites requiring garbage collection.

15:50 → 16:20 Developers roundtable

16:20 → 16:30 AOB