r1 - 16 Apr 2008 - 05:29:07 - RobertGardnerYou are here: TWiki >  Admins Web > FileCatalogP4

FileCatalogP4

Background

Work from previous phases

Activity for Phase 4 (January 1 - March 31, 2008)

  • Complete installation and functional evaluation at BNL 1/15.
  • Integration with Panda: testbed, test queue: 2/15
  • Documentation for Tier2 deployments
  • Conversion plan established for LRC migration
  • Deployment on US ATLAS sites

Revised Plan as of April 8 (carry-over to Phase 5)

  • Based on discussions with Kaushik, the idea is that there is no need to test basic functionality because Panda is using LFC elsewhere. The concern is rather about performance with a catalog with 20,000,000 entries with more expected.
  • Sent email to Miguel Branco asking about maximum LFC size and transation rate in Europe. No reply yet.
  • Plan to dump entire LRC to file and begin long-term import into existing test LFC instance (Hiro). This may take O(weeks). But once done, reloading this DB into another LFC instance will be quick.
  • Final high-performance hardware for LFC at BNL is ordered, and expected by April 15th.
  • The idea is to test read and write performance with a fully-populated catalog.
  • If the tests look good, then the idea would be to do a second (and third) LRC dump, SELECTing only newly created entries since previous dump. Then import them into LFC.
  • Once (nearly) all entries are migrated, briefly halt production and do a final dump and load. Change BNL catalog type to LFC, and restart production.
  • See FileCatalog for the latest.


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