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Thread: JFFS2 on SUSE 11.1

  1. #1

    Default JFFS2 on SUSE 11.1

    Hi!

    It would like to install SUSE Linux 11.1 on an ASUS Eee PC S101 with a Solid State Disk. For A SSD I would like to use a file system that is optimized for SSD/Flash Disks like JFFS2. The question is is it possible to format the disk with jffs2 during the installation? Which tool do I need to format further flash disks with jffs2? I tried to search with "zypper se jffs2" for tools but didn't find anything.

    Thanks for your help!

  2. #2
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    Default Re: JFFS2 on SUSE 11.1

    Memory Technology Device (MTD) Subsystem for Linux.

    suggests that JFFS2 is not a suitable filesystem for a SSD. In fact if it appears like a disk, then the translation has already been done for you and you should treat it like a block device.

  3. #3

    Default Re: JFFS2 on SUSE 11.1

    In several wiki articles it is recommended to use a journaling flash file system instead of ext3 or something because of high write operations with conservative journaling file systems. An alternative would be a ext2 because it has no journal. But don't wanna miss a journaling file system anymore so I thought JFFS2 would be a good choice for SSDs.

  4. #4
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    Default Re: JFFS2 on SUSE 11.1

    It is better to use ext2 instead of JFFS2 because, nowadays, most good NAND devices come with built-in controllers for wear-leveling. (I even suggest mounting option like "noatime" etc. to reduce "smaller" writes that are costlier).
    openSUSE 12.3 (x86_64) with Kernel 3.7.10-1.16-desktop and KDE 4.11.2 on MacBook Pro
    Latest MS Windows version used: Win95

  5. #5

    Default Re: JFFS2 on SUSE 11.1

    Yeah! I googled around a bit and most people chose ext2 for their SSD drive. So I don't understand the recommendation in the wiki articles. Well I give it a try. Other people say the upcoming BTRFS should be a good choice for SSDs or even ZFS if it gets a GPL license one day (hopefully).

  6. #6
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    Default Re: JFFS2 on SUSE 11.1

    Quote Originally Posted by Timo1977 View Post
    So I don't understand the recommendation in the wiki articles.
    Information goes out of date or is just plain wrong for a different situation.

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