Topics

• Federated access to data is one of the main recommendations of the Data Management and Storage TEG.
• For the large scale implementation it is important that several technical details and policies have to be clarified, agreed and documented, so that implementation and setup can progress.

Mandate

• Clarify in detail which forms of federated data access need to be supported
  • “fail over” for individual jobs/“repair mechanism” of placed data/who initiates the repair?/how is metadata handled?/pro-active repair?
• Work on relevant aspects of federated data stores
  • access control and trust mechanism between sites
  • use of catalogues
  • etc.
• Suggest a deployment and operations model for the additional components
  • redirectors
  • xrootd plugins for non-native systems
  • experiment specific configurations/plugins
  • configuration of federations
  • discovery of federations

Participants

Here is the list of the participants, with an indication about their areas of competence.

Mailing list

wlcg-wg-storagefederations@cernNOSPAMPLEASE.ch

Meetings

• Kickoff meeting, August 1st, 2012 (https://indico.cern.ch/conferenceDisplay.py?confId=202447)
• Introduction, plus CMS and ALICE view, August 7th, 2012 (https://indico.cern.ch/conferenceDisplay.py?confId=203366)
• LHCb and ATLAS view, August, 30th, 2012 (https://indico.cern.ch/conferenceDisplay.py?confId=205834)
• First summary, Sept, 11th, 2012 (https://indico.cern.ch/conferenceDisplay.py?confId=207796)
• Participation at the Federated Data Stores Workshop, Sept 14th, 2012 (https://indico.in2p3.fr/conferenceDisplay.py?ovw=True&confId=6941)
• Towards sites, session at the pre-GDB, Oct, 09th, 2012 (https://indico.cern.ch/conferenceDisplay.py?confId=208241) [cancelled due to technical problems, see the subsequent two meetings]
• Report at the GDB, Oct, 09th, 2012 (http://indico.cern.ch/conferenceOtherViews.py?view=standard&confId=155073)
• Towards sites, part1, Oct, 25th, 2012 (https://indico.cern.ch/conferenceDisplay.py?confId=214577)
• Towards sites, part2, Nov, 08th, 2012 (https://indico.cern.ch/conferenceDisplay.py?confId=216644)
• The HTTP Dynamic Federations project, Nov, 20th, 2012 (https://indico.cern.ch/conferenceDisplay.py?confId=217522)
• Federations monitoring, Dec, 6th, 2012 (https://indico.cern.ch/conferenceDisplay.py?confId=220304)
• Discussion on the final report, Jan, 29th, 2013
• Report at the GDB, Feb, 13th, 2013 (https://indico.cern.ch/conferenceDisplay.py?confId=197800)

-- FabrizioFurano - 02-Aug-2012