[lxc-devel] [PATCH] Add mechanism for container to notify host about end of boot

[Serge Hallyn]

Quoting Stéphane Graber (stgraber at ubuntu.com):
> On 12-09-19 10:12 AM, Christian Seiler wrote:
> > Hi,
> > 
> >>>   - is now in /run instead of /dev
> >>
> >> I don't think that part's going to work... Most distros mount /run as
> >> tmpfs at boot time which will hide anything you're putting in there
> >> before boot.
> > 
> > Hmmm, that is indeed a problem... Do you have any suggestions? Or
> > should we just keep it in /dev for now (path is configurable anyway)
> > and worry about this later?
> > 
> > Christian
> 
> I think /dev is the safest at the moment. Arguably it's wrong as it's
> not an actual device node, but it's the only directory that lxc already
> requires all distros not to mess with (or we wouldn't have working
> console, tty, ...).

What are some other alternatives?

We could use some sysvipc mechanism - just have the container share
the ipcns with the monitor.

We could create a directory (default /container, specifiable in
the container config) where such communication files will be
mounted.  Let the per-distro templates set up the location and
the distro-userspace to work together.

Others?

-serge