r2 - 15 Oct 2008 - 11:34:02 - RobertGardnerYou are here: TWiki >  Admins Web > LFCMeetOct15



  • Meeting of the sub-committee to address LFC migration in the US cloud.
  • Coordinates:
    • Wednesday, Oct 15, 10am Central/5pm CERN
    • new phone (309) 946-5300, Access code: 735188; Dial *6 to mute/un-mute.
  • Background: SubCommitteeLFC, FileCatalog
  • Attending: John, Charles, Paul, Rob, Horst, Kathik
  • Apologies: Patrick, Shawn

LFC launch schedule

Oct 1  - LFC subcommittee  meeting to discuss launch
            plan (changes needed in all services and tools
            to switch a site) and resolve any voms
            group/role issues, etc
Oct 7 - AGLT2 : main burn in and validation on a single site...
followed by the rest of the sites:
Oct 14  - UC, UTA
Oct 16 - IU, BU
Oct 20 -  BU, SLAC
Oct 21  - OU, BNL
Oct 23 - WISC

LFC launching at AGLT2

  • last week
    • All DQ2 related issues seems to working.
    • Problem with getting pilots to run correctly. Is there a problem with worker node client?
    • Fails to import lfc - cannot open shared object file. Something not quite right with the environment.
    • What about the other pythons installed in $APP/atlas_app? Interference? Mixing 64 bit and 32 bit, possibly?
    • Xin will re-install the python in $APP/atlas_app, making sure its 32 bit.
  • new status
    • Paul finding errors with transfers today. Communication error on send. Error reading data token header. Has seen these before. * Test reconstruction jobs finish - they make it into the transferring state; * Production jobs were failing because of a prob with LFC command directory creation. * Marco notes that a production job has finished.

LFC launch at UC

  • Run LRC update once again.
  • Pause pilot submission
  • Switch over DQ2
  • LFC host: uct2-grid5.uchicago.edu

LFC installation and LRC migration

LFC-based data management tools (Patrick, Charles)

  • last week
    • File-based deletion working. Scripts from Vincent Garrone for dataset level deletion.
    • User dataset deletion. This will probably be a challenge? How is it handled in the LCG?
  • updates
    • Integrity check needs to be modified for GPFS back ends.
    • Deletion tools require BDII - but we've not accepted this as accepted service in US ATLAS, so we'll need to program around it. Charles will be in contact with Stephane.


-- RobertGardner - 14 Oct 2008

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