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== | == Ways to contact people == | ||
* [[Contributors | ZFS experts]] | * [[Contributors | ZFS experts]] | ||
* [[Mailing list]] | * [[Mailing list]] | ||
* IRC: [irc://chat.freenode.net/#openzfs #openzfs] on freenode ([http://webchat.freenode.net/?channels=openzfs web interface]) | |||
* IRC: [irc://chat.freenode.net/#openzfs #openzfs] on freenode | |||
* Twitter: [https://twitter.com/OpenZFS @openzfs] | * Twitter: [https://twitter.com/OpenZFS @openzfs] | ||
* [[Office | * [[OpenZFS Office Hours]]: rotating the leader/owner | ||
* Pointers to other mailing lists and repos? | * Pointers to other mailing lists and repos? | ||
== Ongoing work == | |||
* Test framework | * Test framework | ||
* One of our goals is to [[reduce code differences]]. | * One of our goals is to [[reduce code differences]]. | ||
** | ** list of [[platform code differences]] | ||
* [[Projects]] | |||
** [[Projects/ZFS Channel Programs | ZFS Channel Programs]] | |||
== Implementation documentation == | |||
* Links to source code are on the [[Distributions]] page | * Links to source code are on the [[Distributions]] page | ||
* | * Architectural/high-level documentation about general OpenZFS concepts | ||
** | ** [[Documentation/ZfsSend|zfs send]] | ||
** [[Documentation/Administrative Commands | administrative commands]] (e.g. <code>zfs snapshot -r pool/fs@snap</code>) | |||
** [[Documentation/ZFS I/O | zfs I/O]] | |||
* The [http://www.amazon.com/Design-Implementation-FreeBSD-Operating-System/dp/0321968972 FreeBSD book] has a great chapter on ZFS - this is probably the best overview available for new developers. | |||
=== Materials on other websites === | |||
[http://www.giis.co.in/Zfs_ondiskformat.pdf ZFS On-Disk Specification – Draft] (ZFSOnDiskFormat.pdf, Sun Microsystems, Inc., 2006-08) | |||
* sometimes known as the ''ZFS On-Disk Format'' document | |||
* outdated, but "hasn't changed that much, and backwards compatibility dictates that it's still useful as a base of knowledge"; "It's the closest thing we have to a comprehensive overview – and it's still mostly applicable, it just doesn't cover newer stuff … like SAs". | |||
[http://www.youtube.com/watch?v=BIxVSqUELNc Examining ZFS On-Disk Format Using mdb and zdb] (2008-06-28) | |||
* a forty-three minute video of Max Bruning presenting to the OpenSolaris Developer Conference in Prague. | |||
The [http://java.net/projects/solaris-zfs/pages/Sourcetour source tour] ([http://web.archive.org/web/20130316073014/http://hub.opensolaris.org/bin/view/Community+Group+zfs/source archive]) describes the various subcomponents in ZFS. | |||
=== Blog posts on ZFS features === | |||
Adaptive Replacement Cache, also known as Adjustable Replacement Cache (ARC) | |||
* [http://www.c0t0d0s0.org/archives/5329-Some-insight-into-the-read-cache-of-ZFS-or-The-ARC.html Some insight into the read cache of ZFS - or: The ARC - c0t0d0s0.org] (2009-02-20) | |||
* [http://dtrace.org/blogs/brendan/2012/01/09/activity-of-the-zfs-arc/ Brendan's blog » Activity of the ZFS ARC] (2012-01-09) | |||
* [https://pthree.org/2012/12/07/zfs-administration-part-iv-the-adjustable-replacement-cache/ Aaron Toponce : ZFS Administration, Part IV- The Adjustable Replacement Cache] (2012-12-07) | |||
Block allocation | |||
* [https://blogs.oracle.com/bonwick/en_US/entry/zfs_block_allocation ZFS Block Allocation (Jeff Bonwick's Blog)] (2006-11-04) | |||
Deduplication | |||
* [https://blogs.oracle.com/bonwick/en_US/entry/zfs_dedup ZFS Deduplication (Jeff Bonwick's Blog)] (2009-11-01) | |||
Hot spares | |||
* [https://blogs.oracle.com/eschrock/entry/zfs_hot_spares ZFS Hot Spares (Eric Schrock's Weblog)] (2006-06-06) | |||
Level 2 Adaptive Replacement Cache, also known as Level 2 Adjustable Replacement Cache (L2ARC) | |||
* [https://blogs.oracle.com/brendan/entry/test ZFS L2ARC (Brendan Gregg)] (2008-07-22) | |||
* [https://blogs.oracle.com/brendan/entry/l2arc_screenshots L2ARC Screenshots (Brendan Gregg)] (2009-01-30) | |||
* [http://blog.harschsystems.com/2010/09/08/arcstat-pl-updated-for-l2arc-statistics/ arcstat.pl updated for L2ARC statistics | Mike Harsch's Blog] (2010-09-08) | |||
* [http://mirror-admin.blogspot.com/2011/12/how-l2arc-works.html Days of a mirror admin: How the L2ARC works] (2011-12) | |||
* [https://pthree.org/2012/12/07/zfs-administration-part-iv-the-adjustable-replacement-cache/ Aaron Toponce : ZFS Administration, Part IV- The Adjustable Replacement Cache] (2012-12-07) | |||
RAID-Z | |||
* [https://blogs.oracle.com/bonwick/en_US/entry/raid_z RAID-Z (Jeff Bonwick's Blog)] (2005-11-17) | |||
* [http://blog.delphix.com/matt/2014/06/06/zfs-stripe-width/ ZFS RAIDZ stripe width], or: How I Learned to Stop Worrying and Love RAIDZ (Matt Ahrens' Blog, 2014-6-15) | |||
Scrub and resilver | |||
* [https://blogs.oracle.com/ahrens/entry/new_scrub_code New Scrub Code (Matthew Ahrens' Weblog)] (2008-12-15) | |||
Snapshots | |||
* [https://blogs.oracle.com/ahrens/entry/is_it_magic Is it magic? (Matthew Ahrens' Weblog)] (2005-11-17) | |||
Space maps | |||
* [https://blogs.oracle.com/bonwick/entry/space_maps Space Maps (Jeff Bonwick's Blog)] (2007-09-13) | |||
* [http://blog.delphix.com/alex/2015/01/26/openzfs_metaslabs OpenZFS code walk of metaslabs (Delphix's open source blog)] (2015-01-26) | |||
Transaction groups | |||
* [http://dtrace.org/blogs/ahl/2012/12/13/zfs-fundamentals-transaction-groups/ Transaction Groups (Adam Leventhal's blog)] (2012-12-13) | |||
VFS interactions | |||
* [http://www.hybridcluster.com/blog/complexity-freebsd-vfs-using-zfs-example-part-1-2/ FreeBSD VFS layer (Andry Gapon's blog)] (2014-01-14) | |||
Write Throttle | |||
* [http://dtrace.org/blogs/ahl/2013/12/27/zfs-fundamentals-the-write-throttle/ Write Throttle 1.0 (Adam Leventhal's blog)] (2013-12-27) | |||
* | * [http://dtrace.org/blogs/ahl/2014/02/10/the-openzfs-write-throttle/ Write Throttle in OpenZFS (Adam Leventhal's blog)] (2014-2-10) | ||
* [http://dtrace.org/blogs/ahl/2014/08/31/openzfs-tuning/ Tuning the OpenZFS Write Throttle (Adam Leventhal's blog)] (2014-8-31) | |||
ZFS Intent Log (ZIL) | |||
* [https://blogs.oracle.com/perrin/entry/the_lumberjack ZFS: The Lumberjack (Neil Perrin's Weblog)] (2005-11-16) | |||
* [https://pthree.org/2012/12/06/zfs-administration-part-iii-the-zfs-intent-log/ Aaron Toponce : ZFS Administration, Part III- The ZFS Intent Log] (2012-12-06) | |||
== Repo- | == Repo-specific developer documentation == | ||
* [[Illumos integration process]] | |||
* Information about how to develop ZFS for the different distributions/pointers to them (e.g., how to build illumos) | * Information about how to develop ZFS for the different distributions/pointers to them (e.g., how to build illumos) | ||
** | ** in particular, documentation about how to test and possibly scripts for building | ||
** | ** needs to be written/links provided by reps from those communities. | ||