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    SubjectRe: [PATCH 00/22][RFC] Unionfs: Stackable Namespace Unification Filesystem
    On Sun, 3 September 2006 11:05:08 +0000, Pavel Machek wrote:
    >
    > > - Modifying a Unionfs branch directly, while the union is mounted, is
    > > currently unsupported. Any such change may cause Unionfs to oops and it
    > > can even result in data loss!
    >
    > I'm not sure if that is acceptable. Even root user should be unable to
    > oops the kernel using 'normal' actions.

    Direct modification of branches is similar to direct modification of
    block devices underneith a mounted filesystem. While I agree that
    such a thing _should_ not oops the kernel, I'd bet that you can easily
    run a stresstest on a filesystem while randomly flipping bits in the
    block device and get just that.

    There are bigger problems in unionfs to worry about.

    Jörn

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    -- Edsger W. Dijkstra
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