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OpenAFS Status Report

OpenAFS Status Report. AFS & Kerberos Best Practice Workshop 2008. Starting with Microsoft Windows. 1.5.36 is the recommended release 17 releases since Workshop 2007. Major New Features since Workshop 2007. Vista SP1 and Server 2008 Certification Performance Improvements

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OpenAFS Status Report

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  1. OpenAFSStatus Report AFS & KerberosBest Practice Workshop 2008

  2. Starting with Microsoft Windows • 1.5.36 is the recommended release • 17 releases since Workshop 2007

  3. Major New Features since Workshop 2007 • Vista SP1 and Server 2008 Certification • Performance Improvements • Hash tables, Lock management redesign, Interlocked operations for reference counts • The client service has been profiled and bottlenecks removed. Up to 63 MB/sec on 64-bit Vista SP1 • Failover Improvements • RXKAD errors and Idle Data • Directory Searchs • B+ trees and local directory modifications

  4. More Improvements • Token management improvements • Try home realm first • No longer destroy token after RXKAD errors • Volume Status Tracking • Volume Notification Plug-in Interface • Rx multi Server Probes • Volume Group Management

  5. Even More Improvements • FollowBackupPath registry option • .readonly Volume CB Optimizations • Data Version optimizations • cmdebug –cellservdb • Out of Quota error reporting • fs –literal • Rx Hot Threads

  6. 2008-2009 Plans • Internationalization (Unicode) • Native File System Client • Support for DOS and Extended Attributes • New user interfaces • Explorer Shell Extensions • Management Console plug-ins • Control Panel replacement • AFS Servers • http://www.secure-endpoints.com/openafs-windows-roadmap.html

  7. Got Questions About OpenAFS on Windows? • OpenAFS for Windows Status Reports available at • http://www.secure-endpoints.com/ • Mailing List • openafs-win32-devel@openafs.org

  8. MacOS X • Most of the issues with 10.4 resolved for 10.5 with help from Apple. • However, getting tokens at login is (now) “hard”. • AFSCommander tool available, integration coming.

  9. Linux • iget() is dead. • Cache manager opens files by path, as in OSX, to deal. • ARM port. • Usual AFS write-on-close semantics restored in 1.4.7, where possible.

  10. ARM Linux • Actually been kicking around for years. • empeg (RioCar) is ARM Linux 2.4. • AFS in your car is sometimes useful. • Nokia n810 was impetus for updating and integrating changes.

  11. AIX • A LAM plugin for Kerberos 5 based aklog is now available and works with CDE Screenlock. • The client properly supports AFSDB.

  12. Clients • Actually not much exciting on clients. • Numerous interaction issues with GUI environments have been addressed. • When shutting down, the client now tries much harder to deallocate resources.

  13. Fileserver • To constrain clients from tying up too many fileserver resources, a quota is enforced during TellMeAboutYourself/WhoAreYou calls to the client. • The spunky child nature of the fileserver is gone. No more assert()s when a volume is found in an unexpected state.

  14. Other things • The policy which precluded you from having a period (“.”) in your Kerberos v5 principal names when using AFS can be overriden in servers in OpenAFS 1.4.7 and later. • And the code has been cleaned up. A lot.

  15. And who were you, again? • Client tracking turns out to be hard when clients lie (unbeknownst to themselves). • Just because an address is reused, it may not be the same client. • The fileserver now takes client address information with a grain of salt.

  16. And then there’s test releases • We want to issue 1.6. Help us test! • Split cache (dedicated portion for read-write data) has had issues addressed. • Linux NFS translator has received several updates. • Mountpointless volume addressing (/afs/.:mount/cell:volumeid/)

  17. But wait, there’s more • Address any vnode directly. (/afs/.:mountcell:volumeid:vnodeid:uniquifier/) • Logical follow-on will fix the MacOS “Finder cross-volume drag” issue. • Multiple (more than 2) local realms. • Oh yeah, and you can have large (>2TB) partitions.

  18. Ice cream for your fileserver • Rx modifications to avoid “server meltdowns” in servers, and to avoid hanging waiting for them in clients. • Rx also tweaked to deal better with high latency WANs.

  19. And more pending • Rx connection “bundling” to allow more than 4 in-flight RPCs on a connection. • Cache read-ahead to improve read performance. • Cache bypass when you’ll never read it again.

  20. And more coming • Extended callback messages to optimize away unneeded traffic. • Both change “ranges” when data is stored, and metadata bundling when other things cause the callback. • Locking enhancements for Unix clients (finally).

  21. Placeholder slide • In the unlikely event the git repository is online by the time I’m talking to you I’ll replace this with a slide about it. • Otherwise, hey, we’re migrating OpenAFS CVS to Git! If you want to use third-party distributed branches for development, you’ll be happy. Otherwise, you don’t care.

  22. Issues of source code management • CVS doesn’t support distributed branches. • I had a plan to add it but it’s not worth the effort. • OpenAFS deltas are mostly analogous to Transarc (IBM) deltas but I wrote most of the tools myself. • cvsps (“Patchsets for CVS”) is used by many tools for conversion to other repositories, but its assumptions didn’t hold for us.

  23. Migrating to git • git cvsimport uses discrete file revisions. • OpenAFS deltas assume patches. • tailor only converts one branch, the head. • OpenAFS uses branches heavily.

  24. When it’s all done • It should be much easier to track upstream while you’re waiting for us to integrate your changes. • And it should be easier for us to merge them.

  25. Stop me if you’ve heard this one before • Other performance optimization (though much of this is coming fairly near-term). • RxTCP. • Directory object changes (Unicode, typed streams, more files). • Kerberos 5.

  26. (No) excuses • This would normally be where I tell you we have no resources, I can’t help you, etc., etc. • This year it’s a little different.

  27. Fresh blood • Google Summer of Code accepted us. • And we got more projects than usual for first-timers. • More on that shortly.

  28. Rebuilding to serve you better • Many of you have probably seen the Elders’ open letter regarding a foundation. • There will be NO CHANGES that affect our code. What’s free today will be free tomorrow. • The goal is to incorporate the Elders such that the project can have assets.

  29. Equity minus liabilities • Among these would be: • Being able to have an independent bank account • Being able to hold intellectual property, like trademarks • We’re working on some of this now. • Please grab an elder to share your comments and concerns.

  30. Documentation • Thanks to Jason Edgecombe for all the work on the man pages • All man pages are written in POD format • Simple to edit • http://www.openafs.org/manpages/ • Other documentation is in DocBook • Still needs a lot of work • All contributions are welcome, please dive in

  31. Introducing... Our New Mascot

  32. Andy, the OpenAFS Orca

  33. In other news • A lot of other exciting things going on. • Stick around for the roadmap and futures discussions on Friday.

  34. Google Summer of Code Projects

  35. Asanka Herath Christopher Clausen David Howells Derrick Brashear Jeffrey Altman Luke Howard Matt Benjamin Neill Jordan Simon Wilkinson Tom Keiser Tracy Di Marco White Mentors

  36. Students and Projects • Andreas Matsikaris • Project: Per-File Access Control List Extensions • Mentor:  Matt Benjamin • Dragos Tatulea  • Project: OpenAFS Disconnected Operation Improvements • Mentor:  Simon Wilkinson • Jacob Thebault-Spieker • Project: kAFS Enhancements • Mentor:  David Howells • Matam Kiran Kumar • Project: OpenAFS Server Manager and OpenAFS Server Installer on Windows • Mentors: Jeffrey Altman & Asanka Herath

  37. Students and Projects • Sheung Hei Joseph Yeung • Project: Microsoft Management Console for OpenAFS Cache Manager • Mentors: Asanka Herath & Jeffrey Altman • Vamshi Velagapuri • Project: Readying OpenAFS Servers for Production Use on Windows • Mentors: Jeffrey Altman & Christopher Clausen • Vishal Powar • Project: Read/Write Volume Replication for OpenAFS • Mentors: Derrick Brashear & Tom Keiser • Yatin Deshpande • Project: Explorer Shell Extension Improvements for OpenAFS • Mentors: Asanka Herath & Jeffrey Altman

  38. OpenAFS Status If your cell phone rang,you owe me a beer.Fermented bubbly rice-water doesn’t count.

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