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D-Cache Status Report

Detailed report on D-Cache 1.6.6-1 update, improving performance, management, and features. Testing, installation, configuration, and upcoming upgrades discussed.

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D-Cache Status Report

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  1. D-Cache Status Report Owen Synge DCache 1.6.6-1

  2. Overview + Changes • D-Cache • Has an SRM front end and a GsiFTP front end. • A single namespace distributed file system. • Deployed at multiple sites in GridPP • Based upon PNFS service • NFS like server written in ANSI C • Many Java components providing functionality coupled to service in async way. • PNFS manager, Location manager, Replica Management .. • D-cache Updates • PNFS updates • Supports New Postgres as storage backend • Supports space reservation (For SRM2) • Improved configuration and packaging • Requiring new configuration management • Billing Data Base • Cosmetic changes DCache 1.6.6-1

  3. Status of Testing • RAL Teir 1 is upgrading to 1.6.6-1 to overcome performance issues with last release • Verified basic functionality an now preparing for performance metrics. • Upgrading process tested. • Verified functionality. • Installation • DCAP • SRM copy • The user interfaces DCache 1.6.6-1

  4. YAIM Installation / Configuration Management • YAIM entering testing phase for new release. • For installation not production upgrades • Complete rewrite of D-Cache module (configuration changes) • Based upon work by • J Mencak, J Novak,L Poncent, O Keeble, L Field and M Aart • GridPP’s testing has been very useful • Install differences insulated for Site Admins (Done) • New features under testing (Not finished) • Three reinstall variables • Wipe PNFS Namespace • Drop Databases (Excluding PNFS Namespace) • Wipe D-Cache configuration files • Separate configuration of admin, doors and pools • Planed (Not Started) • Configuring Information system in YAIM • Creating PNFS databases per VO directory. DCache 1.6.6-1

  5. Quattor Installation / Configuration Management • Quattorentering testing phase for new release. • New system for D-Cache 1.6.6-1 also version specific. • Not yet committed to Quattor CVS • Written by Stijn De Weirdt based upon original work by Andreas Nowack. • Based upon Postgres 8.1 • I have no Quattor experience so cant comment on solution further DCache 1.6.6-1

  6. Summary • D-Cache 1.6.6-1 looks good • Too soon to say it is good, deployment systems just coming on line (YAIM, Quattor) • Required for wide spread testing in next couple of weeks. • Expect to upgrade all sites soonish! • For better auditing (See gregs talk?) • Not curtain when • More testing/bug fix releases may effect schedules. • New bug fix release due in next couple of days • Will be 1.6.6-2 • Production version 1.6.6 Upgrade talk by Greg follows ! DCache 1.6.6-1

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