Red Hat Enterprise Linux and NFS by syedmshaaf
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Red Hat provides mission-critical software and services using an open source model. This includes operating systems, virtualization, storage, and middleware. Red Hat develops products using a participate, integrate, and stabilize process involving upstream open source projects and communities. Red Hat Enterprise Linux works well with NFS for storage, with NFS version 4 improving performance and NFS version 4.1 introducing parallel access for improved scalability.
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Red Hat Enterprise Linux and NFS by syedmshaaf
- 1. Red Hat Enterprise Linux / NFS Syed M Shaaf Klaus Oxdal Solution Architect Partner and Alliances, Nordics Red Hat Red Hat 1 Red Hat Enterprise Linux and NFS | Syed M Shaaf
- 2. WHAT WE DO We offer a range of mission-critical software and services covering: IaaS/PaaS MIDDLEWARE OPERATING SYSTEM VIRTUALIZATION STORAGE HOW WE DO IT. We develop everything using THE BENEFITS. an OPEN SOURCE model. Flexibility Shared development reduces Faster technology innovation costs & accelerates innovation. Better quality Open collaboration offers products that genuinely meet Better price & performance customers' requirements. Alignment to your needs 2 Red Hat Enterprise Linux and NFS | Syed M Shaaf
- 3. PRODUCT PROCESS PARTICIPATE 100,000+ PROJECTS We participate in & create upstream projects. We build & support open communities around integrated projects. INTEGRATE We enable software & hardware partners to participate at every stage of development. STABILIZE We commercialize these innovations together with a rich ecosystem of services & certifications. 3 Red Hat Enterprise Linux and NFS | Syed M Shaaf
- 4. OUR CUSTOMERS The largest global exchange on the planet. The largest global distribution system in the world. We are pleased to offer supported enterprise-class Red Hat Enterprise Linux on demand for our customers. A leading enterprise cloud computing vendor. Wherever you live, it is likely that several letters that you Red Hat has impressed us with its have received have been read, coded, and processed for outstanding engineering capabilities delivery by one of our systems using JBoss Enterprise and commitment to our strategic Application Platform as the middleware foundation. alliance. 4 Red Hat Enterprise Linux and NFS | Syed M Shaaf
- 5. Red Hat Enterprise Linux 5 Red Hat Enterprise Linux and NFS | Syed M Shaaf
- 6. RED HAT ENTERPRISE LINUX 6 SCALABILITY 6 Red Hat Enterprise Linux and NFS | Syed M Shaaf
- 7. RED HAT ENTERPRISE LINUX 6 SCALABILITY 7 Red Hat Enterprise Linux and NFS | Syed M Shaaf
- 8. RED HAT ENTERPRISE LINUX 6 SCALABILITY 8 Red Hat Enterprise Linux and NFS | Syed M Shaaf
- 9. RED HAT ENTERPRISE LINUX 6 COMMUNITY LEADERSHIP 9 Red Hat Enterprise Linux and NFS | Syed M Shaaf
- 10. NFS 10 Red Hat Enterprise Linux and NFS | Syed M Shaaf
- 11. NFS V4 ● NFS version 3 most used! Why Change it?? Performance! ● Version 4 is now the default protocol version for RHEL6 ● IETF: RFC3530: http://tools.ietf.org/html/rfc3530 11 Red Hat Enterprise Linux and NFS | Syed M Shaaf
- 12. NFS Version 4.0 – Noteworthy features ● Version 4 is a Stateful Protocol. ● Delegations ● Mandated Security ● Referrals ● Firewall Friendly (kinda!) 12 Red Hat Enterprise Linux and NFS | Syed M Shaaf
- 13. NFS version 4 – Gotchas! ● “All My files are owned by NOBODY!!!” ● Idmapping: [email protected] ==> 3606 ● DNS problem 90% of the time ● 'Domain=' in /etc/idmapd.conf ● Mounting Legacy servers. ● Mount negotiation start at v4 ● For Legacy server use /etc/nfsmount.conf mount negotiation 13 Red Hat Enterprise Linux and NFS | Syed M Shaaf
- 14. NFS version 4.1 ● Sessions ● Session IDs ● Parallel NFS (pNFS) ● File Layout (NAS environment) - Netapp ● Block Layout ● Object Layout ● IETF: RFC5661 ● http://tools.ietf.org/html/rfc5661 14 Red Hat Enterprise Linux and NFS | Syed M Shaaf
- 15. NFS version 4.1 in RHEL ● RHEL6 Client ● Tech Preview in 6.2 ● pNFS: File layouts only ● RHEL7 Client ● All layouts supported. 15 Red Hat Enterprise Linux and NFS | Syed M Shaaf
- 16. NFS version 4.1 – Make it work! ● Enabling 4.1/pNFS on the client ● mount -o minorversion=1 ● Does the server support pNFS ● nfs4filelayout_init: NFSv4 File Layout Driver Registering.. ● “pnfs=<layout>” in /proc/self/mountstats 16 Red Hat Enterprise Linux and NFS | Syed M Shaaf
- 17. NFS version 4.2 ● Labeled NFS ● Security contexts ● Server to Server Copy ● offload to server copy operation ● Sparse Files ● IETF: Internet-Draft ● http://tools.ietf.org/html/draft-ietf-nfsv4-minorversion2-11 17 Red Hat Enterprise Linux and NFS | Syed M Shaaf
- 18. 6.4 and some important changes 18 Red Hat Enterprise Linux and NFS | Syed M Shaaf
- 19. Operating system - IO Operating System ( Kernel ) 2: 1: Buffers and Cache Storage Data 3: Application Data Application Cache/Buffer Pool Data 19 Red Hat Enterprise Linux and NFS | Syed M Shaaf
- 20. Operating system – Direct IO Operating System ( Kernel ) 2: 1: Buffers and Cache Storage Data Application Data Application Cache/Buffer Pool Data 20 Red Hat Enterprise Linux and NFS | Syed M Shaaf
- 21. Direct IO with PNFS, is it useful? ● O_DIRECT patches into pnfs ● Access the storage directly. Why? ● Databases are a good candidate, when? ● All operations are done in block size multiples 21 Red Hat Enterprise Linux and NFS | Syed M Shaaf
- 22. RED HAT ENTERPRISE LINUX 6 Slots and TCP window size ● Allow the number of available slots to grow with the TCP window size. ● RHEL 6.3 dynamically allocates RPC slots up to the sunrpc.tcp_max_slot_table_entries ( 65536) ● Previously the number of in-flight RPC requests was limited to 128 (default 16). This affected the performance of OLTP workloads when using the kernel based NFS client. ● NFS 4.1 max session slots is set with the boot parameter: nfs.max_session_slots (do not set higher than above) 22 Red Hat Enterprise Linux and NFS | Syed M Shaaf
- 23. References ● Steve Dickson ● http://people.redhat.com/steved/Summits/ ● NFSv4.1 new features: Sessions, Parallel NFS (pNFS) ● http://www.iaps.com/nfsv4.1-new-features.html ● Parallel NFS (pNFS) ● http://www.pnfs.com/ 23 Red Hat Enterprise Linux and NFS | Syed M Shaaf
- 24. Thank you! Syed M Shaaf Klaus Oxdal Solution Architect Partner and Alliances, Nordics Red Hat Red Hat 24 Red Hat Enterprise Linux and NFS | Syed M Shaaf