[sf-lug] Meeting Reminder - SF-LUG Linux Discussion at Noisebridge

[Rick Moen]

Quoting Grant Bowman (grantbow at partimus.org):

> A question came up today about overlay or, more properly, union
> filesystems. I am not sure but I think UnionFS is used by the Ubuntu live
> usb creator program we used today.
> 
> http://en.wikipedia.org/wiki/Union_mount

Ubuntu uses AUFS.
https://help.ubuntu.com/community/aufsRootFileSystemOnUsbFlash

One of the problems with that is that AUFS remains out-of-tree, i.e.,
has not been accepted by the mainline kernel developers.  

Last I heard, no implementation has yet passed muster on LKML, not Union
FS, not AUFS, nor overlayfs.  (My information might be out of date.)

There is also a userspace (FUSE) implementation, FWIW, unionfs-fuse.