Karl Semich:
> Would it be reasonable for aufs to refrain from copying up if only the
> ctime is changed?  Perhaps a mount option to ignore isolated ctime
> changes?

Hmm, I think I can understand your point.
But it won't be so easy to decide because it is against a generic
filesystem behaviour.

Very basic behaviour:
- on ext2 or something
$ > fileA
$ stat fileA
$ sleep 1
$ chown $(id -u) fileA
$ stat fileA
- then you can see only ctime was changed.

If we introduce "ignore_isolated_ctime_change" mount option, then this
behaviour breaks. Ok, that is intentinal and won't be a problem.

Hmm, I need to consider more about it.
Give me some time.


J. R. Okajima

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