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pNFS Block Status - EMC

pNFS Block Status - EMC. Linux pNFS Block Layout . Transparent to applications Common client for different storage vendors Fewer support issues for storage vendors Normalizes access to clustered file systems. Client Apps. blocks ( iSCSI ). NFSv4.1 Layout grant & recall. pNFS Client.

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pNFS Block Status - EMC

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  1. pNFS Block Status - EMC

  2. Linux pNFS Block Layout Transparent to applications Common client for different storage vendors Fewer support issues for storage vendors Normalizes access to clustered file systems Client Apps • blocks (iSCSI) NFSv4.1 Layoutgrant & recall pNFS Client Layout Driver pNFS Server iSCSI Protocol Cluster File System Control Protocol

  3. NFSv4.1 – with pNFS Block Linux pNFS block layout Client Support generic layout – CITI Univ. of Michigan Support block layout client (iSCSI)‏ - F-16 CITI Maintenance of block layout – CITI via Linux kernel Bugzilla Performance monitoring and patching – CITI via Bugzilla New EMC VNX release with improved pNFS block performance – Q3 2012 High bandwidth Improved small files performance Support to RedHat Support block layout – EMC Elabwork with RedHat to qualify pNFS EMC Elab will qualify Fedora 16 3

  4. pNFS Block – Protocol enhancement • NFSv4.1/pNFS were standardized at IETF • NFSv4 working group (WG) • New Disk Protection draft approved by IESG • Extension to RFC 5663 • Added mechanism that enables identification of block storage devices used by pNFS to be protected using GPT • EMC VNX will implement it when RFC is approved

  5. pNFS Block Performance Latest Performance Using 10GbE server iSCSI and 1 GbE clients 4 threads per client Single Client Write: 107 MB/sec Read: 90 MB/sec 8 Clients Write: 852 MB/sec – 98% scalability Read: 674 MB/sec – 96% scalability 5

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