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    SubjectRe: silent semantic changes with reiser4
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    On Wed, 2004-08-25 at 18:03, Jamie Lokier wrote:
    > Nicholas Miell wrote:
    > > Anything that currently stores a file's metadata in another file really
    > > wants this right now. Things like image thumbnails, document summaries,
    > > digital signatures, etc.
    >
    > Additionally, all of those things you describe should be deleted if
    > the file is modified -- to indicate that they're no longer valid and
    > should be regenerated if needed.
    >
    > Whereas there are some other kinds of metadata which should not be
    > deleted if the file is modified.
    >
    > -- Jamie

    Presumably the app which uses the metadata will be smart enough to
    compare the st_mtime of the MDS/stream/attribute/whatever (can we choose
    a name for these things now?) to the st_mtime of the file and do the
    right thing.

    thumbnail - regenerate it
    summary - keep it, it's relatively independent of the file's exact
    contents
    signature - always verify it
    etc.

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