r3 - 18 Jan 2011 - 16:27:00 - ArmenVartapetianYou are here: TWiki >  Admins Web > MinutesDataManageJan18



Minutes of the US ATLAS Data Management meeting, Jan 18, 2011
  • Previous meetings and background : IntegrationProgram
  • Coordinates: Tuesdays, Noon Central
    • (605) 715-4900, Access code: 735188; Dial *6 to mute/un-mute.


  • Meeting attendees: Armen, Shawn, Saul, Patrick, Charles, David, Hiro, Wei, Wensheng, Bob, Rob
  • Apologies:
  • Guests:

Topics for this week

  • BNL space status - Armen, Hiro
    • Looks good overall. Need to add/reserve some more space for GROUPDISK and SCRATCHDISK.
    • Hiro is fixing space reporting (shows too much available - some double and triple counting because of shared pools).
    • Read/write buffer for TAPE needs tuning.
  • Tier 2 space status - Armen
    • SWT2 cleaned up - 120 TB. All others look ok.
    • SLACT2 PRODDISK shows full - blacklisted. Reporting is probably wrong.
  • USERDISK cleanup - Hiro, Armen
    • Ongoing, but slow (small files).
    • Armen asked for USERDISK priority to be lower (in Victor) so it does not block other space token deletion.
    • Priority sequence in deletion config for all T2s is changed to: PRODDISK, DATA/MCDISK, GROUPDISKs, SCRATCHDISK, USERDISK.
    • Hiro - next round emails will come this week.
  • DATADISK migration
    • Large amount of central deletion from MCDISK.
    • PD2P? no longer writing to MCDISK. AKTR and DaTri? will also stop this week.
    • Work adiabatically. Central DDM is already moving primaries. Secondary deletion will come next. Maybe set all MCDISK to 98% full next week, and reallocate space to DATADISK?
  • PRODDISK cleanup
    • Please run Charles script periodically to clean _dis datasets. Charles will send new script soon.
  • Hot issues
  • AOB
    • Flat file for space reporting for Bestman sites - Patrick, Wei will follow up
    • Patrick - trying Bestman 2 at UTA_SWT2 cluster this week (installed on test machine)
    • Wei - also trying Bestman 2 at SLAC on test machine
    • Hiro - new SS will be deployed at BNL in January (maybe this week)
    • Hiro - will set up monitor for LOCALGROUPDISK

-- KaushikDe - 18 Jan 2011

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