• OCFS2 and GFS2 in -cloud kernel images

    From Lukas Martini@21:1/5 to All on Tue Sep 20 17:50:01 2022
    Hi,

    I understand the cloud images are supposed to be stripped down images
    with only the bare essentials for cloud operation.

    However I think it's quite unfortunate that the OCFS2 and GFS2 modules
    are also disabled compared to the regular kernel config since I would
    argue those are _especially_ useful in a cloud environment.

    For example, OpenStack offers multiattach images that require a
    shared-disk file system like these. I think Amazon AWS added a similar
    feature recently too.

    Is there any chance these could be re-enabled for the cloud images, or
    is the official advice to just switch to the regular images where those
    are needed?


    Cheers,
    Lukas

    p.s.: Not subscribed to the list, appreciate CC on replies

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  • From Bastian Blank@21:1/5 to Lukas Martini on Thu Sep 22 10:40:01 2022
    Hi Lukas

    On Tue, Sep 20, 2022 at 05:18:37PM +0200, Lukas Martini wrote:
    I understand the cloud images are supposed to be stripped down images with only the bare essentials for cloud operation.

    Even more, they are destined for certain environments. OpenStack
    technically is not part of that, but works in a lot of cases as a
    generic OpenStack is just kvm and virtio, the same as GCE.

    And some parts are disabled simply because they are large and of really uncertain use.

    However I think it's quite unfortunate that the OCFS2 and GFS2 modules are also disabled compared to the regular kernel config since I would argue
    those are _especially_ useful in a cloud environment.

    Actually I don't think this is true. Why would you use GFS if your
    environment already provides a redundant shared file storage for you?
    Or can use a distributed store like ceph, which does not require huge
    kernel extensions and are way more resilient.

    For example, OpenStack offers multiattach images that require a shared-disk file system like these. I think Amazon AWS added a similar feature recently too.

    Azure supports it, GCE supports it as a preview. I did not find
    anything about AWS.

    Is there any chance these could be re-enabled for the cloud images, or is
    the official advice to just switch to the regular images where those are needed?

    I don't think this warants shipping GFS and/or OCFS. If you really,
    really want it, use the generic image with the full kernel, which is
    required for several OpenStack environments anyway.

    Regards,
    Bastian

    --
    You're too beautiful to ignore. Too much woman.
    -- Kirk to Yeoman Rand, "The Enemy Within", stardate unknown

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