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Thread: Journaled file system, writable from Ubuntu and Mac Os X?

  1. #11
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    Re: Journaled file system, writable from Ubuntu and Mac Os X?

    yes I think it is a leopard thing too. That seems to be when people starting having issues with it.

  2. #12
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    Re: Journaled file system, writable from Ubuntu and Mac Os X?

    It seems that EXT2FSX has some incompatibilities with the EXT2 flag DIR_INDEX.
    To enable write permissions in MACOSX, first you have to unset it in linux:

    tune2fs -O ^dir_index [partition]

    Be aware though that EXT2FSX version 1.4D4 is unstable on the MACTEL.
    Here, it crashed whenever you unmounted a read-write partition.
    And that caused minor corruptions on the EXT2 filesystem.

    EXT3 should work with no problems.
    But I also heard that there is no support for Leopard.

  3. #13
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    Ubuntu Karmic Koala (testing)

    Re: Journaled file system, writable from Ubuntu and Mac Os X?

    btw did you try to use hfs+ with journal disabled to share data between linux and osx. I'm using this with my volume for music. I have r/w access from linux and osx. Amarok is working fine on that volume and neither does itunes...

    And there is another way. For my windoze-peers I have a ntfs external drive. And with the ntfs3g installed in osx and linux it works quite fine, but on this filesystem you have to deal with the problem of fragmented data. If you have much writing-access, you will run into big trouble, unless you have a windoze to defragment the volume periodic...

  4. #14
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    Re: Journaled file system, writable from Ubuntu and Mac Os X?

    Quote Originally Posted by frog_pilot View Post
    btw did you try to use hfs+ with journal disabled to share data between linux and osx. I'm using this with my volume for music. I have r/w access from linux and osx. Amarok is working fine on that volume and neither does itunes....
    Yes, at the moment thats what I'm using now, that's the whole problem, that i mentioned in my original post. Without journaling the whole file system needs to be rechecked at every reboot, and I've had to wait as much as 5 minutes before the home partition is mounted so that I could log in. also without journaling there's more risk of data corruption if there's a crash.



    Quote Originally Posted by frog_pilot View Post
    And there is another way. For my windoze-peers I have a ntfs external drive. And with the ntfs3g installed in osx and linux it works quite fine, but on this filesystem you have to deal with the problem of fragmented data. If you have much writing-access, you will run into big trouble, unless you have a windoze to defragment the volume periodic...
    I've never used windows, so if it requires windows, then it's not an option.
    iMac 27" running Mac OS X 10.6 (Snow Leopard) and Ubuntu 12.4 (Precise Pangolin)
    iMac G4 running Mac OSX 10.04 (Tiger)
    HP Pavillion running Ubuntu 8.04 (Hardy Heron)
    Mac Expert, Linux User, Windows Virgin

  5. #15
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    Re: Journaled file system, writable from Ubuntu and Mac Os X?

    I'm not very familiar with file systems, but have you considered UFS? There is native support for it in OS X and according to this post over at Linux Forums, it should be easy to add read/write support in Ubuntu.

    The only question is journaling capabilities. I don't believe UFS uses journaling but some sort of metadata logging feature instead. You may want to check out this PDF from Sun, which gives some comparisons of ext3 and UFS.

  6. #16
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    Ubuntu 7.10 Gutsy Gibbon

    Re: Journaled file system, writable from Ubuntu and Mac Os X?

    I use an unjournaled, case-sensitive, hfsplus partition to share files in ubuntu and os x and I am not experiencing this filesystem check every boot like you mention. Could there be another reason it is triggering a filesystem check at every boot?

  7. #17
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    Re: Journaled file system, writable from Ubuntu and Mac Os X?

    Quote Originally Posted by mchladek View Post
    I'm not very familiar with file systems, but have you considered UFS? There is native support for it in OS X and according to this post over at Linux Forums, it should be easy to add read/write support in Ubuntu.
    There is no support for Apple's version of UFS in Linux. We have chased that rabbit before. It is a bit different than plain UFS.

  8. #18
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    Ubuntu Karmic Koala (testing)

    Re: Journaled file system, writable from Ubuntu and Mac Os X?

    Quote Originally Posted by flaggh View Post
    I use an unjournaled, case-sensitive, hfsplus partition to share files in ubuntu and os x and I am not experiencing this filesystem check every boot like you mention. Could there be another reason it is triggering a filesystem check at every boot?
    dito

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