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Virtual Filesystem Directory Service

Virtual Filesystem Directory Service. Leo Luan, Ted Anderson IBM Almaden Research Center 10/7/2003 at GGF9. Virtual Filesystem Directory Service. Enables the realization of a Grid File System with a uniform, global, hierarchical namespace

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Virtual Filesystem Directory Service

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  1. Virtual Filesystem Directory Service Leo Luan, Ted Anderson IBM Almaden Research Center 10/7/2003 at GGF9

  2. Virtual Filesystem Directory Service • Enables the realization of a Grid File System with a uniform, global, hierarchical namespace • Hierarchically organizes file data sources (network file systems accessible through standard protocols such as NFS, CIFS) as well as any abstract data services supporting file access • VFDS can render itself as a data service • Permits distributed namespace ownership within and across organizations without compromising autonomy

  3. A Global Namespace using Virtual Filesystem Directory Service and Replica Location Service /grid Global root VFDS junctions ggf.org ibm.com SG ARC shark (gsiftp://shark.tucson.ibm.com) csstorage(LFSN: arc_cs_storage) ais fileX(LFN: 8493802) RLS dst RLS wiki grid File system arc_cs_storage: gsiftp://csstorage.almaden.ibm.com nfs://nas1.almaden.ibm.com/csstor file 8493802: gsiftp://gridftp1.almaden.ibm.com/aisfiles/8493802 gsiftp://gridftp2.tucson.ibm.com/almfiles/ais/8493802

  4. Grid File System Data Service, NFS, CIFS (GFS gateway, caching appliance, etc) Application Host Application POSIX, Win32 API GFS, CIFS, NFS clients File System Clients VFDS RLS GridFTP Server Abstract data services Physical data sources CIFS Server Local File System NFS Server Other types of native data

  5. Virtual Filesystem Directory Service - Summaries • Enables a virtualized, hierarchical namespace that federates file systems, individual files as well as other abstract data services supporting file access semantics • An informational document was published at GGF8 to facilitate discussions and standardization • A reference implementation is being done at IBM Almaden • Engaging NFSv4 workgroup for possible NFS realization • Data service abstraction of VFDS is being considered

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