[REQUEST] unionfs needs some guys can do implements new 2 APIs
rwatson at FreeBSD.org
Tue Oct 10 11:09:36 PDT 2006
On Tue, 10 Oct 2006, Daichi GOTO wrote:
> 1 Introduction
> We have always tried to keep changes just in unionfs segment
> only. But by accomplish nothing, we need change the other segment.
> 2 Problem Description
> Until now we have did many improvements for unionfs, but
> now we feel the limication arount the process of unionfs's
> "copied-up file". Additional thinking of future support for
> MAC extention, ADVLOCK lock infomation and somethinkg like those,
> all the more reason to be careful.
> 3 Impact
> It leads the confution of unionfs implementation and some
> problem around lock mechanism. We cannot solve those problem
> by just only changes in unionfs segument.
So, just to be clear that I understand things: the basic problem here is that
when unionfs copies a file up a layer in the stack due to local modifications
in the upper layer, you are not able to properly preserve the full set of file
attributes, so are looking for a way to do this?
Robert N M Watson
University of Cambridge
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