Ok, thanks for your reply. Any suggestion to achieve something similar? I'm trying with btrfs subvolumes but I don't get to make union of /usr from OS subvolume with /usr from runtime subvolume
Nowadays I'm workarouding with: systemd-nspawn --overlay=/var/lib/machines/os/usr:/var/lib/machines/runtime/usr:/usr -D /var/lib/machines/os --machine=foo -b -x On Fri, Aug 19, 2016 at 1:02 PM, Lennart Poettering <lenn...@poettering.net> wrote: > On Tue, 16.08.16 15:43, Juanjo Presa (juan...@gmail.com) wrote: > > > Hi, I'm trying to compose a container with several layers and join > together > > with overlay option but seems that is not supported. > > > > I want to get something like: > > systemd-nspawn --overlay=/foo/ubuntu-base:/foo/app-runtime:/foo/app:/ -D > > /foo/bar --boot > > > > Maybe I'm misunderstanding the overlay option. > > > > So, what do you suggest to accomplish a similar model. Maybe just mount > the > > desired overlay sideways in /foo/bar and dismiss systemd-nspawn overlay > > option? Something similar with btrfs subvolumes? > > > > Thanks in advance. > > Yeah, we currently do not support overlayfs as root dir, see > > https://github.com/systemd/systemd/issues/3847 > > We should probably make that work. But do note that overlayfs > introduces as many new problems as it solves IRL... Because of that > there's no first level support for it in place right now (i.e. no > support for using it as backing for --ephemeral or so). > > Lennart > > -- > Lennart Poettering, Red Hat >
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