upgrade udev on Ubuntu 14.04

[Qiang Huang]

Hi list,

I'm a Docker user, for some reason, I need to use Docker on Ubuntu 14.04
with devicemapper driver, but we got a serious problem because udev on
Ubuntu 14.04 is too old to support sync, see details:
https://github.com/docker/docker/issues/4036

Seems no one ever got around of this problem, I wonder if we can upgrade udev
on Ubuntu 14.04 in a smooth way, e.g. from udev 204 to udev 208.
(RHEL7 with udev 208 don't have this problem, so I assume udev 208 would work)

Any help would be very appreciated.
Thanks in advance.


Regards,
Qiang