Measured 2026-11-02 while a TV dedupe pass moved folders on the raw path: the
merged tree still answered stat at the old coordinates, link count 0, while ls of
the same parent no longer listed the name. Overlayfs keeps a dentry for a lower
file moved underneath it, so a tool that tests existence with [ -e ] against the
view can believe a file its own readdir denies — the media servers walk by
readdir, so this bites a script and never a user.
Recorded with it: every pass that moves or measures media walks /mnt/entropy, and
the one reader allowed to point at the view is the tool that needs show identity.
Frank
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