DCache Status Report Owen Synge DCache 1 6

D-Cache Status Report Owen Synge DCache 1. 6. 6 -1 1

Overview + Changes • D-Cache – – Has an SRM front end a Gsi. FTP front end. A single namespace distributed file system. Deployed at multiple sites in Grid. PP 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 SRM 2) – Improved configuration and packaging • Requiring new configuration management – Billing Data Base – Cosmetic changes Owen Synge DCache 1. 6. 6 -1 2

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 Owen Synge DCache 1. 6. 6 -1 3

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 – Grid. PP’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. Owen Synge DCache 1. 6. 6 -1 4

Quattor Installation / Configuration Management • Quattor entering 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 Owen Synge DCache 1. 6. 6 -1 5

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 ! Owen Synge DCache 1. 6. 6 -1 6