Re: [PATCH 00/13] overlay filesystem: request for inclusion (v15)

[Miklos Szeredi]

"J. R. Okajima" <hooanon05@xxxxxxxxxxx> writes:

> Miklos, how do you think about this?
> <http://marc.info/?l=linux-kernel&m=123938533724484&w=2>
> Do you think UnionMount is totally gone?

Unionmount provides almost the same functionality as overlayfs.  The big
difference between the two is that unionmounts resides 100% in the VFS
while 95% of overlayfs is plain filesystem code.  I think that's the
biggest advantage: filesystem code is easier to maintain, has less
impact on core complexity, etc.

Aufs provides much better filesystem semantics than either unionmounts
or overlayfs.  But that does come at a price:

aufs:       98 files changed, 29893 insertions(+), 7 deletions(-)
overlayfs:  22 files changed, 2981 insertions(+), 10 deletions(-)

Thanks,
Miklos
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