Messages in this thread | | | From | Arnd Bergmann <> | Subject | Re: [RFC 0/7] [RFC] cramfs: fake write support | Date | Mon, 2 Jun 2008 16:13:14 +0200 |
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On Monday 02 June 2008, hooanon05@yahoo.co.jp wrote: > I don't want you to call aufs users crazy who are using such policies. > By the way, how do you think link(2) or rename(2)? When the source file > exists on the lower writable branch, do you think copy-up is the best > way? Or do you think all lower branches should be readonly? > There is an exception in aufs's branch-select policy. That is > link/rename case. When the source file exists on a writable branch, aufs > tries link/rename it on that branch in every policy. Do you think it > best to do it on the top branch only?
Yes, I tend to consider the union case identical to the cross-mount move or link, so I'd expect the kernel to return errno=EXDEV and user space to handle this by doing the appropriate copy/unlink as it does for other cases already.
Arnd <><
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