Currently proposed GSSD Sub-Groups

Glue Schema 2.0 for Storage Services

The goal of this sub-group is to come up with a data model for Storage Service for the Glue Schema 2.0. A mailing list has been setup: glue20-se@cernNOSPAMPLEASE.ch. The web archive can be found here: https://mmm.cern.ch/public/newsimba2lists/glue20-se The list is moderated by Laurence Field (CERN).

SRM v1-v2

The goal of this sub-group is to find a solution for the coexistence of SRM v1 and v2 endpoints for a given implementation. CASTOR and DPM are the first target implementations. The test UI setup at CERN can be used for this purpose.

Proposed members

• Stephen Burke: coordinator (RAL)
• Jens Jensen (RAL)
• John Gordon (RAL)
• Greig Cowan (Edinburgh)

Tentative Milestone

15 of March 2007

A document is attached:

• SRM2Recommendations10.doc: Recommendations about how to configure SRM2 endpoints

Catalogues

The goal of this sub-group is to find a solution to the following issues:

• It could be necessary to be able to peform massive rename operations on file catalogues. This is normally a costly and time consuming operation that can make the entire Grid unavailable for long time.
• During the testing phase, how should new data be registered in the catalogue ? What happens in case a roll back to SRM v1 is needed ?

Proposed members

• CERN ?

Tentative Milestone

End of April 2007

Experiment Requirements

The goal of this sub-group is to provide GSSD with precise experiment requirements for implementing Storage Classes, Space Token Descriptions I/O buffers at sites.

Proposed members

• Flavia Donno: coordinator (CERN)
• Latchezar Betev (Alice)
• Miguel Branco, Dietrich Liko (ATLAS)
• Stefano Belforte, Ian Fisk (CMS)
• Nick Brook (LHCb)

Tentative Milestone

15 of March 2007

LHCb and ATLAS setup at FZK, IN2P3, and SARA

Setup a working storage environment for LHCb and ATLAS

Proposed members

• Representative for the sites involved
• Miguel Branco, Dietrich Liko (ATLAS)
• Nick Brook (LHCb)

Tentative Milestone

End of May 2007

Monitoring

The goal of this sub-group is to come up with a first list of information that can be extracted from currently available MSS management tools and to come up with a first prototype of indipendent interface that can be used to create "sensors" that could store the relative info to be displayed initially with SAM or GridView.

Proposed members

• Giacinto Donvito, Mirco Ciriello (INFN): coordinators
• Jean-Philippe Baud (DPM)
• Luca Magnoni (StoRM)
• Greig Cowan (Edinburgh)
• Patrick Fuhrmann (dCache)
• Julia Andreeva (ARDA: Experiment Dashboard)
• Richardo Rocha (ARDA: Experiment Dashboard)

Tentative Milestone

End of October 2007

Few useful documents are attached:

• Report on monitoring
• Recommendations from the WLCG monitoring group

-- Flavia Donno - 04 June 2007