Speaker
Dr
Flavia Donno
(CERN)
Description
Storage Services are crucial components of the Worldwide LHC Computing Grid (WLCG)
infrastructure spanning more than 200 sites and serving computing and storage
resources to the High Energy Physics LHC communities. Up to tens of Petabytes of data
are collected every year by the 4 LHC experiments at CERN. To process these large
data volumes it is important to establish a protocol and a very efficient interface
to the various storage solutions adopted by the WLCG sites. In this work we report on
the experience acquired during the definition of the Storage Resource Manager v2.2
protocol. In particular, we focus on the study performed to enhance the interface
and make it suitable for use by the WLCG communities. At the moment 5 different
storage solutions implement the SRM 2.2 interface: BeStMan (LBNL), CASTOR (CERN, RAL,
and INFN), dCache (DESY and FNAL), DPM (CERN), and StoRM (INFN and ICTP). After a
detailed inside review of the protocol, various test suites have been written
identifying the most effective set of tests: the S2 test suite from CERN and the
SRM-Tester test suite from LBNL. Such test suites have helped verifying the
consistency and coherence of the proposed protocol and validating existing
implementations. We conclude our work describing the results achieved.
Summary
SRM 2.2 definition and testing experience
Primary author
Dr
Flavia Donno
(CERN)
Co-authors
Dr
Alex Sim
(LBNL)
Dr
Arie Shoshani
(LBNL)
Dr
Birger Koblitz
(CERN)
Dr
David Smith
(CERN)
Dr
Don Petravick
(FNAL)
Dr
Ezio Corso
(ICTP)
Dr
Gavin Mccance
(CERN)
Dr
Jean-Philippe Baud
(CERN)
Dr
Junmin Gu
(LBNL)
Mr
Luca Magnoni
(CNAF)
Dr
Maarten Litmaath
(CERN)
Dr
Paolo Badino
(CERN)
Dr
Paolo Tedesco
(CERN)
Dr
Remi Mollon
(CERN)
Dr
Riccardo Zappi
(CNAF)
Dr
Shaun De Witt
(RAL)
Dr
Sophie Lemaitre
(CERN)
Dr
Timur Perelmutov
(FNAL)
Dr
Vijaya Natarajan
(LBNL)
