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09-Apr-2008Fabrizio Furano - Scalla/xrootd status and features1.

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Presentation on theme: "09-Apr-2008Fabrizio Furano - Scalla/xrootd status and features1."— Presentation transcript:

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2 09-Apr-2008Fabrizio Furano - Scalla/xrootd status and features1

3 09-Apr-2008Fabrizio Furano - Scalla/xrootd status and features2

4 09-Apr-2008Fabrizio Furano - Scalla/xrootd status and features3 lfn2pfn prefix encoding Storage System (oss, drm/srm, etc) authentication (gsi, krb5, etc) Clustering (olbd) authorization (name based) File System (ofs, sfs, alice, etc) Protocol (1 of n) (xrootd) Protocol Driver (XRD)

5 09-Apr-2008Fabrizio Furano - Scalla/xrootd status and features4

6 09-Apr-2008Fabrizio Furano - Scalla/xrootd status and features5

7 09-Apr-2008Fabrizio Furano - Scalla/xrootd status and features6 Courtesy of Gerardo Ganis (CERN PH-SFT)

8 09-Apr-2008Fabrizio Furano - Scalla/xrootd status and features7 Courtesy of Gerardo Ganis (CERN PH-SFT)

9 09-Apr-2008Fabrizio Furano - Scalla/xrootd status and features8 Courtesy of Gerardo Ganis (CERN PH-SFT)

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12 Application 09-Apr-2008Fabrizio Furano - Scalla/xrootd status and features11 Client1 Server Client2 Client3 TCP (control)‏ Clients still see One Physical connection per server Clients still see One Physical connection per server TCP(data)‏ Async data gets automaticall y splitted Async data gets automaticall y splitted

13 09-Apr-2008Fabrizio Furano - Scalla/xrootd status and features12

14 09-Apr-2008Fabrizio Furano - Scalla/xrootd status and features13

15 09-Apr-2008Fabrizio Furano - Scalla/xrootd status and features14 *Federico Carminati, The ALICE Computing Status and Readiness, LHCC, November 2007

16 09-Apr-2008Fabrizio Furano - Scalla/xrootd status and features15 *Federico Carminati, The ALICE Computing Status and Readiness, LHCC, November 2007

17 09-Apr-2008Fabrizio Furano - Scalla/xrootd status and features16 *Federico Carminati, The ALICE Computing Status and Readiness, LHCC, November 2007

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20 09-Apr-2008Fabrizio Furano - Scalla/xrootd status and features19 Redirector xrootd:1094 Name Space xrootd:2094RedirectorHost ClientHost opendir create mkdir mv rm rmdir xrootd POSIX Client Kernel User Space Appl POSIX File System Interface FUSE FUSE/Xroot Interface Should run cnsd on servers to capture non-FUSE events

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26 09-Apr-2008Fabrizio Furano - Scalla/xrootd status and features25 cmsd xrootd Prague NIHAM … any other cmsd xrootd CERN cmsd xrootd ALICE global redirector (alirdr) all.role meta manager all.manager meta alirdr.cern.ch:1312root://alirdr.cern.ch/Includes CERN, GSI, and others xroot clusters Meta Managers can be geographically replicated Can have several in different places for region- aware load balancing Meta Managers can be geographically replicated Can have several in different places for region- aware load balancing cmsd xrootd GSI all.manager meta alirdr.cern.ch:1312 all.role manager

27 09-Apr-2008Fabrizio Furano - Scalla/xrootd status and features26 cmsd xrootd Prague NIHAM … any other cmsd xrootd CERN cmsd xrootd ALICE global redirector all.role meta manager all.manager meta alirdr.cern.ch:1312 all.role manager Note: the security hats could require you use xrootd native proxy support cmsd xrootd GSI But missing a file? Ask to the global metamgr Get it from any other collaborating cluster all.manager meta alirdr.cern.ch:1312 Local clients work normally

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