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pNFS Update 2010-09-17

pNFS Update 2010-09-17. Sorin Faibish, EMC. Outline. What is pNFS? pNFS Timeline Standards Status Industry Support pNFS EMC Status and Roadmap. Client. pNFS protocol. Storage-access protocol. Metadata Server. Control protocol. Data Servers. pNFS. pNFS protocol

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pNFS Update 2010-09-17

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  1. pNFS Update 2010-09-17 Sorin Faibish, EMC

  2. Outline • What is pNFS? • pNFS Timeline • Standards Status • Industry Support • pNFS EMC Status and Roadmap pNFS Update 2010-09-17

  3. Client pNFS protocol Storage-access protocol Metadata Server Control protocol Data Servers pNFS • pNFSprotocol • standardized: NFSv4.1 • Storage-access protocol • files (NFSv4.1) • blocks (FC, iSCSI, FCoE, IB) • objects (OSD2) • Control protocol • Outside of the pNFS standard • Distributes data across storage cluster • Eliminates or reduces load and capacity balancing • And yes: can accelerate I/O pNFS Update 2010-09-17

  4. pNFS Multiple Layouts Client gets a layout from the NFSv4.1 server The layout maps the file onto storage devices and addresses The client uses the layout to perform direct I/O to storage At any time the server can recall the layout Client commits changes and returns the layout when it’s done pNFS is optional, the client can always use regular NFSv4.1 I/O` layout Storage Clients NFSv4.1 Server pNFS Update 2010-09-17

  5. Client Apps • files (NFSv4.1) • objects (OSD2) • blocks (SCSI) • Future back ends … NFSv4.1 Layoutgrant & recall pNFS Client Layout Driver pNFS Server Storage Protocol Cluster File System Control Protocol Linux pNFS Clients Transparent to applications Common client for different storage back ends Fewer support issues for storage vendors Normalizes access to clustered file systems pNFS Update 2010-09-17

  6. NFSv4.1 – Open Source Status Two OpenSource Implementations OpenSolaris and Linux (file, osd and block) OpenSolaris Client and Server Support only file-based layout Support for multi-device striping already present (NFSv4.1 + pNFS)‏ “Simple Policy Engine” for policy-driven layouts also in the gate Linux Client and Server Support files (NFSv4.1)‏ Support currently also blocks (SCSI), objects (OSD T10)‏ Client consists of generic pNFS client and “plug ins” for “layout drivers Windows NFSv4.1 Client from CITI - NEW pNFS Update 2010-09-17 6

  7. Timeline 2004 – CMU, NetApp and Panasas draft pNFS problem and requirement statements 2005 – CITI, EMC, NetApp and Panasas draft pNFS extensions to NFS 2005 – NetApp and Sun demonstrate pNFS at Connectathon 2005 – pNFS added to NFSv4.1 draft 2006 - 2008 – specification baked Bake-a-thons, Connectathons 26 iterations of NFSv4.1/pNFS spec 2009 – RFC submitted (680 pages) 2010 – RFC 5661 published 2010 – Fedora 13 includes pNFS server/client rpms (did you triy it yet?) pNFS Update 2010-09-17 7

  8. pNFS Standards Status NFSv4.1/pNFS were standardized at IETF NFSv4 working group (WG) All done including RFC 5661,3,4: WG last call (DONE) Area Director review (DONE) IETF last call (DONE) IESG approval for publication (DONE) IANA review (DONE) RFC publication (2010) Consists of several documents: RFC 5661 - NFSv4.1/pNFS/file layout RFC 5662 - NFSv4.1 protocol description for IDL (rpcgen) compiler RFC 5663 - blocks layout RFC 5664 - objects layout RFC 5665 - netid specification for transport protocol independence (IPv4, IPv6, RDMA) pNFS Update 2010-09-17 8

  9. Industry Contributors to pNFS Standard pNFS Update 2010-09-17 9

  10. NFS iSCSI / FC iSCSI / FC Network Traditional pNFS Use Cases • Seismic Data Processing / Geosciences' Applications • Broadcast & Video Production • High Performance Streaming Video • Finite Element Analysis for Modeling & Simulation • HPC for Simulation & Modeling • Data Intensive Searching for Computational Infrastructures pNFS Ethernet Solution Application Server Racks FCoE NFS pNFS pNFS Storage Heads pNFS Server pNFS Update 2010-09-17

  11. Questions – Client Technology When will a valid pNFS client be available? How does the parallel NFS block layout work? What’s an object layout, how do objects compare to blocks/files? How do current cluster file systems work with pNFS client and server? How is client access to data servers coordinated and controlled? Attendee Questions Encouraged… pNFS Update 2010-09-17

  12. Questions – Files, Blocks and Objects How many layout types can there be? How does pNFS make managing a lot of systems easier? Can my application control how its data is striped? When can we expect to see real pNFS performance, not vendor claims based on older technology? How can I use pNFS in an enterprise environment; would it support non-disruptive (NDU) upgrades? Attendee Questions Encouraged… pNFS Update 2010-09-17

  13. Questions – Data Management • Can I retain data management practices I use today based on Snapshots and Volume replication? • Can File, Object and Block layouts co-exist in the same storage network? • Can a client use volumes accessed via each layout concurrently? • I’m deploying a Unified Ethernet Fabric; how do I secure data access – files, blocks & objects? • Attendee questions encouraged… pNFS Update 2010-09-17

  14. Questions – What else • NFSv4.1 and pNFS what are the expectations compared to 4.0? • What additional function do you want to see added to 4.1: • FedFS • Copy server side • What would you like to see in NFSv4.2 additional to what is proposed: • Sparse files • Access Permissions pNFS Update 2010-09-17

  15. Clients Linux Oracle (Open Solaris) ESX (prototype in 5.0) Servers Desy (file) EMC (block) IBM (file) Linux (all layouts) LSI (block) NetApp (file) Panasas (object) Oracle (file/OpenSolaris) Industry Support - Implementations Several other implementations have been tested at Bake-a-thons and Connectathons pNFS Update 2010-09-17

  16. Linux Status • Client • Consists of generic pNFS client and “plug ins” for “layout drivers” • Supports files, blocks, objects • Contributors: CITI, EMC, NetApp, Panasas • Server • Supports files, blocks, objects • Contributors: CITI, EMC, IBM, NetApp, Panasas • Finalizing patches for kernel.org – NFSv4.1 sessions • Predicted timeline: • Basic NFSv4.1 features 2H2010 • NFSv4.1 pNFS and layout drivers by 1H2011 • Linux distributions shipping supported pNFS in 2H2011. pNFS Update 2010-09-17

  17. OpenSolaris Status Developing both pNFS client and server in open • nfsv41-discuss@opensolaris.org File-based implementation exploiting ZFS capabilities Management via Simple Policy Engine (SPE) pNFS data path over RDMA (on Infiniband) pNFS Update 2010-09-17

  18. EMC and pNFS History and Roadmap

  19. Storage Network NFS Server Parallel NFS - pNFS • NFS file naming, management, and administration • Parallel high bandwidth file access (via Storage Network) • Block Layout leverages existent SAN infrastructures pNFSData Data Network - LAN pNFSControl

  20. HPC Jobs Compute Engines CONNECTIVITY NFS S E R V E R S pNFS pNFS Block Layout - high I/O speeds Storage must be Networked pNFS addresses storage access issues • Remove servers layer between CE and shared storage • Separates MD traffic from Data Traffic • Asymmetric storage architectures increase scalability • Leverages SSD to increase I/O speed • Automatic tiering • Improves utilization to any SAN infrastructure: • FCoE, Infiniband, FC, iSCSI • Enable access to PB’s of storage at GB’s/sec speeds • Demonstrated by existent MPFS deployments • Combine multiple MD servers in a unified storage system • MD server is any Celerra NAS server supporting: • NFSv3, CIFS, MPFS and pNFS • Tiered services for increased scalability HPC Architecture MIDDLEWARE CONNECTIVITY SAN STORAGE

  21. pNFS Block Layout – The beginning • The ancestors of pNFS Block Layout are NAS accelerators - 1998: • EMC-MPFS, Quantum-StoreNext and Mercury-Sanergy • EMC donate the FMP (MPFS) protocol and IP • Open source version of FMP client (iRoad) - 2003 • IETF pNFS Block Layout = modified open storage FMP protocol - 2004 • EMC support pNFS Block Layout in Linux kernel by join work with CITI: Peter Honeyman, Fred Isaman, Bruce Fields • Current pNFS block layout open source client and NFSv4.1 demonstrated at bake-a-thons • Ongoing funding the project, in 5th year = strong EMC commitment • Customers can experience the value of pNFS using the EMC FMP open source driver, or by installing current shipping MPFS product.

  22. pNFS Block Layout – Now • pNFS will supports any SAN storage (LSI, EMC, other SAN) • Working with other SAN vendors to promote pNFS Block Layout • EMC supports NFSv4.1 and pNFS server using pNFS clients in Linux kernel • Prototype demonstrated at latest Bake-a-thon • Demo on Laptop with VM and real clients • EMC is working with all the pNFS developers to accelerate adoption by HPC • The goal is to combine all flavors of pNFS servers accessed by each Linux client in one single infrastructure • Working with Linux Distributions and Linux kernel developers • What value brings pNFS block layout • Leverage existent SAN storage and connectivity • Allow access to SAN storage by NFSv4 network clients • Virtualizes multi-vendor storage arrays into a single unified view

  23. pNFS Block Layout – Roadmap • EMC supports pNFS block in current Celerra release • Q3 2010 – First vendor to announce pNFS server • Fedora 13 has support for pNFS block funded by EMC • EMC plans to support NFSv4.1 and pNFS file in future • Prototype will be presented at Bake-A-Thon at EMC • EMC hosts the Fall Bake-a-Thon in at EMC • October 4-8, 2010 • EMC contributes new protocol enhancement for NFSv4.2 • Draft: http://www.ietf.org/id/draft-faibish-nfsv4-pnfs-access-permissions-check-03.txt • EMC is working with all the pNFS vendors to accelerate adoption • Sponsor SNIA ESF • Support pNFS for MS Windows (we are already testing) • Working with Linux Distributions RHEL 6.1 is the plan (Q2 2011)

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