************************************************************************ ****** ****** ****** Minutes of the GridPP storage phone conference ****** ****** 1 Mar 2006 ****** ****** ****** ************************************************************************ Present: QMUL: Guiseppe Liverpool: Paul RAL Tier 1: Derek Glasgow: Graeme, Jamie Lancaster: Brian, Matt RAL Storage: Owen, Jiri, Jens (chair+mins) 0. Review of actions (below see) 1. DPM 1.5 testing and status Graeme reports that the upgrade 1.4.X to 1.5.Y is tricky because it needs a schema change (see action #90), and because there is now VOMS support. Jiri reported that the install did not come with VOMS libraries, so he didn't start testing. Sites SHOULD NOT upgrade to 1.5.Y yet. Graeme has tested 1.5.2 and found it broken. Expecting 1.5.4 to be tagged soon. PPS is still running 1.4.5 or so, the one from LCG 2.7.0. 2. Status of dCache YAIM testing (cf minutes from last week) Testing essential, because the tests help decide which bits of YAIM-for-dCache go into the next LCG release. Matt has done some testing already, but hit a site failure. Paul has now volunteered to do some further testing. Big thanks to both! 3. T1<->T2 transfer test status Some problems at install time; Brian found that the dpm-mgr wasn't created, and that the Perl ReadKey package didn't have the name he expected. Graeme said there were minor incompatibilities between the SL 3.0.X; best advice is to take the version with highest possible value of X. Owen says SL4 may be used by the end of the year. Jens asked whether there were any DPM performance problems; high system load had been reported with earlier versions. Nobody had seen it, but many hadn't looked that closely at their DPM. 4. FTS deployment and plans At the moment it looks like FTS 1.5, which does not support SRM 2.1, will go into gLite 3.0. FTS is important because that would have been the best way to transfer data between SRM 1s and 2s (by get/put'ing and doing 3rd party gridftp). We don't yet know whether GFAL and lcg-* will support SRM 2.1. 5. CASTOR deployment update (Jens) Jens reported that it is likely the CASTOR SRM will be exposed for testing in April, and not as previously planned Julyish. It is likely that only the SRM 2 to CASTOR will be deployed (hence item 4, above). If the main client tools don't support 2 then, obviously, they will not be able to speak to CASTOR. Owen points out that there is no information service for the SRM. 6. Storage papers for AHM? The following ideas were suggested: - Comparing http with gridftp (for dCache in particular) - Owen; - Optimising performance - Graeme; - Comparing LAN protocols (RFIO, DCAP) with their GSI equivalent - Jens. - Owen reports he's doing a paper on packaging, installation, and configuration. 7. Progress with hardware recommendations Andrew Sansum is writing this up; Derek didn't know if there was any progress. There may be an interim report out. Jens will have a look for it. 8. AOB Jamie reports work done at Glasgow testing with 2.6 kernels and XFS. In an end to end test, they are seeing 10% increase in throughput. Results and HOWTOs will be put in the Wiki. Owen asked about Matt's bug. Owen says the bug is not a bug but Matt should try to confirm that it is not a bug. ------------------------------------------------------------------------ ACTIONS 41 10/08/2005 Agree licence with DESY Jens Open No news. 53 12/10/2005 Find reasoanable % for SE uptime for SC4 Jeremy Open Reassigned. Follow up with GDB et al No news. 54 02/11/2005 Report on performance/scalability with pools on WNs Paul Open Progress. Will put in wiki. NB: dcache pools No news. 57 02/11/2005 Investigate StoRM Jiri Open Wait for INFN report No news. 60 16/11/2005 Add client wsdl->library recipe to wiki Jens Open No news. 61 16/11/2005 Figure out who in INFN is testing StoRM Jens Open Low priority No news. 75 18/01/2006 Describe 2.1 testing tool in wiki Jiri Open The tool is described in sourceforge and there is a link from the Wiki to sourceforge. Done. 78 25/01/2006 Get sites to forward details of their disk setups Greig Open No news. 82 01/02/2006 Produce file QoS summary document Jens Open No news since last week, but progress. 86 08/02/2006 Extend monitoring to do sites per VO and VOs per site Greig? Open No news. 88 08/02/2006 Report whether FTS 1.5 supports SRM 2.1 Graeme Open Done. Answer is no. See also item #4 on agenda. 90 22/02/2006 Investigate DPM upgrade to 1.5 schema issue Graeme Open Done. It is not an issue; in the actual release of 1.5, probably 1.5.4, there will be a migration script. 91 22/02/2006 Add an SRM 2.1 tests page to the wiki Jiri Open See also #75 92 22/02/2006 Add a GLUE storage problem page to the wiki Jens Open Done. Jens created a simple page https://wiki.gridpp.ac.uk/wiki/Glue (which was linked to somewhere but didn't exist), and then put the summary of the discussion from last meeting on https://wiki.gridpp.ac.uk/wiki/Glue_SE_Schema 93 22/02/2006 Add 10 questions page to the Wiki? Jens Open Still open. No new actions this week.