The future of OpenZFS and FreeBSD

Allan Jude <>

Looking at the recent changes to the OpenZFS Project, and how FreeBSD will interact with the OpenZFS Project going forward.

This talk will discuss:

  • How the OpenZFS project started
  • How the OpenZFS project has changed over the last 5 years
  • The introduction of the monthly ZFS Leadership Call
  • New problems as ZFS has matured (needing to add a deprecation policy, etc)
  • How the OpenZFS project is working to reduce the differences across platforms (command line switches, NFS differences)
  • Interoperability improvements (feature flag ‘compatibility’ groups)
  • New procedures to prevent divergence and coordinate development across platforms (reserving flags, wider discussion before names for features/flags are decided)

Then switch gears and cover FreeBSD specific issues:

  • The switch to ZoL as upstream
  • Why we are making the change
  • What we get out of it
  • How it is better for all of OpenZFS

And finally a status report:

  • ZFS-on-Linux and ZFS-on-FreeBSD are now “OpenZFS”
  • There is no LinuxKPI in ZFS (kill the FUD)
  • What has OpenZFS done for me lately (new and upcoming features)

Allan Jude

FreeBSD user (2001), doc (2014), and src (2015) committer. FreeBSD Core Team (2016-2020) Co-Author of “FreeBSD Mastery: ZFS” and “FreeBSD Mastery: Advanced ZFS” with Michael W. Lucas VP Engineering at Klara Inc (FreeBSD development and support services)

  • slides.pdf (383 kb)