On Thu, Mar 14, 2019 at 09:47:23AM +0200, Amir Goldstein wrote: > Overlayfs is not expected to modify the lower layer. That is pretty clear, I mean that's the whole point of overlayfs, right? :-) > OTOH, I can't really think anything that should break horribly if > we allow overlayfs to update atime on a writable lower layer?? It wasn't using O_NOATIME prior to Linux 4.19 (which is where this was starting to break our tooling), but the bisected commit I mentioned initially (a6518f73e60e5044656d1ba587e7463479a9381a) was (implicitly) introducing O_NOATIME, so to the contrary I'd say it would actually un-break networking file systems with overlayfs. a! -- aszlig Universal dilettante
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