Comment 1 for bug 2025402

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Michael Vogt (mvo) wrote :

As an additional data point, mwhudson mentioned the following:
so fwiw my favourite (but unverified) theory is that this is some kind of refcounting bug in overlayfs that prevents unmounts that should be allowed
(related https://github.com/mwhudson/livefs-editor/issues/25)

So we could try the same as https://github.com/mwhudson/livefs-editor/pull/26 - i.e. on umount error just umount lazy.