ZFS on Mac OS X

Discussion in 'macOS' started by MShock, Apr 7, 2009.

  1. MShock macrumors member

    Apr 7, 2008
    With Snow Leopard coming, ZFS will become a part of Mac OS X. I want to know about integration issues, transition issues, and whether or not people think ZFS will eventually be the default filesystem on OS X.

    The issues I know are underdevelopment with ZFS are encryption and device/pool removal. I don't know if that affects the ZFS port to OS X. In the last SL forum we heard that in SL, ZFS had been integrated into the Finder quite substantially. We do not know about boot support, FileVault, and Time Machine integration.

    Any thoughts, suggestions, theories, updates or anything related to ZFS to be posted here. Think app transition and support to integration etc.
  2. 11800506 macrumors 65816


    Oct 31, 2007
    Washington D.C. Area
    I had heard that ZFS would only be implemented in Snow Leopard Server and now in the standard version. That would lead for ZFS implementation in the standard version for presumably 10.7.
  3. MorzillA macrumors 6502


    May 16, 2007
    ......boy do I feel like an idiot about now....so ZFS is a filing system or an app??

  4. Zerozal macrumors 6502

    Apr 3, 2009
    ZFS is a new file system. Presumably, and eventually, many believe it is intented to replace OS X's current HFS+.
  5. hugodrax macrumors 6502a

    Jul 15, 2007
    What makes ZFS better on a desktop over HFS+ other than its something different?
  6. stomer macrumors 6502a

    Apr 2, 2007
    Leeds, UK
    My understanding (from info provided by Apple devs on the zfs mailing list) is that whilst ZFS for Time Machine would make a lot of sense, that's not something that Apple is working on, yet. There wont be any boot capability in Snow Leopard. I'd expect SL client to have the same ZFS support as SL server but SL server might have some GUI for managing pools.

    They're working at ironing out all the bugs. The current version of Finder doesn't play nicely with ZFS all the time and ZFS support needs to be built into Disk Utility.

    On feature that makes ZFS better than HFS+ is Snapshots. Snapshots allow you to rollback FS changes to a previously taken snapshot. Also ZFS is more robust, it's a FS that a lot less likely to corrupt.
  7. Matek macrumors 6502a

    Jun 6, 2007
    It's a much more modern filesystem that removed many of the legacy limits that have been dragged along in most other filesystems. Block sizes are variable, volume manipulation is much much simpler compared to the trouble you have to go through to resize/move partitions currently, snapshots are very welcome for features such as Shadow Copy / Time Machine and most importantly - performance is improved. It's like getting a better hard drive for free :D.

    And that's just a portion of the stuff I find interesting, there's much more.
  8. MShock thread starter macrumors member

    Apr 7, 2008
    macosforge.org's FAQ indicates that they want a bootable zfs for the next osx release, maybe that's why zfs wasn't in the server developer build last go around?

    I know zfs is only on sl server, but surely, they would have a developer release or something on client. The conversion to Cocoa will probably help, in that everyone can keep in mind the transition from HFS+ to ZFS, making it less of a headache.
  9. sidewinder macrumors 68020


    Dec 10, 2008
    Northern California
    What does the transition to Cocoa have to do with the file system and how would that make it any easier to implement and support for ZFS?

  10. micsaund macrumors 6502


    May 31, 2004
    Colorado, USA
    Glad I wasn't the only one scratching my head and wondering what I was missing when I read that... ;)
  11. MShock thread starter macrumors member

    Apr 7, 2008
    sorry, I should have been more specific. If there is a Finder rewrite in Cocoa, then I think people would be mindful of ZFS and future integration. Same goes for disk utility.
  12. grahamperrin macrumors 601


    Jun 8, 2007
  13. grahamperrin macrumors 601


    Jun 8, 2007
    In a topic about solid state hybrid drives, some questions about ZFS:

    1. Performance

    Some discussions in the OpenZFS on OS X area:

    2. Configuration

    You can have both ZFS and HFS Plus on the same disk but performance will suffer. I'll add a note of explanation.

    3. Adoption

    A 2013 question: Has anyone else in Sussex Mac User Group (SMUG) used ZFS?

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12 April 7, 2009