SRM v2.2 / v3 meeting report SRM v2.2 meeting Aug. 29 http://agenda.cern.ch/fullAgenda.php?ida=a063257 Status reports and discussions SRM v3 meeting Aug. 30 – Sep. 1 http://agenda.cern.ch/fullAgenda.php?ida=a062357 Many discussions also very relevant to v2.2 (v2.3) Maarten Litmaath (CERN), WLCG Management Board meeting, 2006/09/12 – v2

CASTOR status No significant development remaining for minimal WLCG model C++ client may not catch bugs found by LBNL Java client Java Axis is stricter than gSOAP Stability of CASTOR core code at RAL should be OK now Disk server at CERN should now be available Maarten Litmaath (CERN), WLCG Management Board meeting, 2006/09/12 – v2

dCache status Directory functions implemented srmLs output format to be decided Space reservation alpha version ready authZ based on VO group and role when gPlazma + PRIMA + GUMS are used Framework allows for LCMAPS plugin space access semantics to be decided Data transfer functions implemented srmCopy can copy to/from v1.1 and v2.2 srmBringOnline in October Maarten Litmaath (CERN), WLCG Management Board meeting, 2006/09/12 – v2

DPM status All methods for minimal WLCG model implemented a few options are not yet fully treated Some unresolved issues Space ownership vs. primary FQAN content Space ACLs srmLs output format Paths or SURLs File lifetimes DB schema should allow for v3/v2.3 enhancements Maarten Litmaath (CERN), WLCG Management Board meeting, 2006/09/12 – v2

Berkeley SRM status Almost all methods for minimal WLCG model implemented Currently supports 2 of the 3 storage classes: CUSTODIAL + NEARLINE == Tape1Disk0 REPLICA + ONLINE == Tape0Disk1 Will be deployed for Earth System Grid and STAR experiment Will be made available through VDT Maarten Litmaath (CERN), WLCG Management Board meeting, 2006/09/12 – v2

StoRM status Collaboration of INFN and ICTP (EGRID) http://www.egrid.it/sw/storm/ Disk-based SRM on top of high-performance parallel file systems e.g. GPFS (supports space reservation) Allows SRM file systems with ACLs to be directly accessed from WNs Apply just-in-time ACLs All methods for minimal WLCG model expected around end September Discovered some ambiguities in v2.2 specification/MoU Maarten Litmaath (CERN), WLCG Management Board meeting, 2006/09/12 – v2

FTS status Use space token or description, if supplied, on Put and Copy srmLs only one single files bringOnline for pre-staging early next year ACL propagation (also for leading directory creation) to be decided Best effort support for v1.1 WLCG v2.2 support to be in release end of October Maarten Litmaath (CERN), WLCG Management Board meeting, 2006/09/12 – v2

GFAL/lcg-utils status Space token to be provided in explicit call to set the context not as extra arguments to the POSIX-like interface ACL propagation to be decided WLCG v2.2 support to be available early October Maarten Litmaath (CERN), WLCG Management Board meeting, 2006/09/12 – v2

Storage Classes WG issues Tape1Disk1 back-end implementation not completely evident the other two are standard allowed transitions to/from the other two? want to avoid making physical copies explicit stageout Tape0  Tape1 awkward to implement: disallow? Space reservation refers to the pool from which the data is used data typically accessed from LAN only WAN transfer pool takes up some HW, but is not exposed Maarten Litmaath (CERN), WLCG Management Board meeting, 2006/09/12 – v2

Berkeley SRM-Tester status Test client independent of any server implementation Basic functionality tests Advanced tests provoke failed requests check the server's subsequent behavior Basic and advanced interoperability tests with srmCopy Results published on web pages http://sdm.lbl.gov/srm-tester/ Stress tests implementation dependent on extra funding Work part of GGF-GIN project Maarten Litmaath (CERN), WLCG Management Board meeting, 2006/09/12 – v2

Space reservation issues Ownership/ACL semantics Based on VOMS FQANs Proposals, no decisions yet v3/v2.3: allow subspaces for dynamic reservation v3/v2.3: one can add a file to a space not writable by the file owner Compare with hard link in home directory to someone else’s file Prevent purgeFromSpace anomaly: last writable instance cannot be removed with purgeFromSpace Owner can always use srmRm instead v2.2: a file can only be in one space! Maarten Litmaath (CERN), WLCG Management Board meeting, 2006/09/12 – v2

File lifetimes v2.2 v3/v2.3 v3 core does not have spaces SURL, bringOnline (pin), TURL v3/v2.3 SURL, space, bringOnline (pin), TURL v3 core does not have spaces All basic functionality must also be available without space tokens Maarten Litmaath (CERN), WLCG Management Board meeting, 2006/09/12 – v2

xrootd, quotas, httpg xrootd Quotas httpg vs. https BaBar have important use case for file update  immutable files file can change as long as not in catalog want prepareToPut with delay option to allow for updates etc. tested with modified Berkeley SRM Quotas still desired for v3/v2.3 complementary to spaces httpg vs. https httpg always delegates proxy, while only needed for srmCopy separate delegation service reduces security overhead https is standard can use alternative implementations, less code to maintain Maarten Litmaath (CERN), WLCG Management Board meeting, 2006/09/12 – v2

GLUE schema changes New schema for SE to reflect properties of SRM v2.2 and higher Storage Area  space Access Policy info per SA per VO Foresees quotas Enhances Access Protocol info Removes obsolete/unused notions Submitted to GLUE schema working group Maarten Litmaath (CERN), WLCG Management Board meeting, 2006/09/12 – v2

Plan of work Settle open issues in phone conferences + mailing lists ACL semantics Files and directories Spaces srmLs output format File lifetimes Avoid non-trivial changes to WSDL/spec for the time being Collaborate with Storage Classes WG Continuous interoperability testing Berkeley SRM-Tester Jiri Mencak’s test suite  Flavia Donno looking into it Monitor FTS/GFAL/lcg-utils progress RAL integration week cancelled Nobody found it useful at this time New meeting to be decided Maarten Litmaath (CERN), WLCG Management Board meeting, 2006/09/12 – v2