r2 - 16 Dec 2009 - 13:53:52 - ArmenVartapetianYou are here: TWiki >  Admins Web > MinutesDataManageDec15



Minutes of the US ATLAS Data Management meeting, Dec. 15, 2009
  • Previous meetings and background : IntegrationProgram
  • Coordinates: Tuesdays, Noon Central
    • (605) 715-4900, Access code: 735188; Dial *6 to mute/un-mute.


  • Meeting attendees: Charles, Shawn, Wei, John, Bob, Saul, Armen, Patrick, Wensheng,
  • Apologies:
  • Guests:

Topics for this week

  • GROUPDISK deployment
    • Stephane created all physics/performance endpoints for the US
    • Consensus - these endpoints should be served by local site services at Tier 2's
  • USERDISK cleanup
    • Progressing well with Hiro's script
    • Summary from Armen:
      • 72 TB at BNL, 16 TB at AGLT2, 1.2 TB at MWT2, 5 TB at NET2, 4.3 TB at SWT2, 4.7 TB at WT2 cleaned up last week
    • New issue with potential dark data (or DQ2 miscalculation) in USERDISK and SCRATCHDISK - Armen/Hiro will follow up
    • Temporary space usage on BNL SCRATCHDISK going up (could indicate missing data at BNL) - Armen following up
  • Tier 2 migration to BNL SS - Hiro
    • Postpone discussion till next meeting
  • Tier 3 cleaning
    • Hiro will make SQLite files from BNL LFC for each Tier 3 site
    • Charles will modify ccc and cleanse to run at Tier 3 using SQLite file
    • Also use SQLite file for storing local storage information (instead of Python dictionaries currently)
  • Available space status - Armen
    • Everything is OK
    • Charles is cleaning dark data consistently, maybe other sites should do it too (Shawn is doing too for MCDISK/DATADISK)
  • Hot issues
    • User requests to replcate data09* should go to DATADISK, mc09* to MCDISK (not other tokens) - Kaushik will follow up
  • AOB
    • MWT2 endpoint migration to MWT2_UC consistently - Charles will start email thread

-- KaushikDe - 15 Dec 2009

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