fall-through dentries [LWN.net]

fall-through dentries

Posted Mar 26, 2009 17:03 UTC (Thu) by vaurora (guest, #38407)
In reply to: fall-through dentries by arnd
Parent article: Union file systems: Implementations, part I

I think the key to getting a maintainable unioning file system is limiting the feature set. Okay, Linux union mounts won't slice, dice, AND puree your files - but they will cover many common cases.

If you don't agree, just wait for the aufs article - it is almost certain to implement any feature you want.

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fall-through dentries

Posted Mar 27, 2009 14:36 UTC (Fri) by arnd (subscriber, #8866) [Link]

I absolutely agree that the feature set needs to be limited, and that's
what makes the Plan9 way of union mounts so beautiful (thanks for
describing it here, I didn't know how it works before).

Limiting the implementation so that you can never change the underlying
file system any more may be worth it but is still quite drastic, so I
thought it should be mentioned more explicitly.