Cloning/copying an lxc on gentoo (lxc-copy / lxc-clone)

lxc-copy

lxc-copy is the replacement for lxc-clone:

mkdir -p <new_lxc_path>
lxc-copy --name=<existing_lxc_name> --newname <new_lxc_name> --newpath /<new_lxc_path>

In the new container:
1. /etc/conf.d/hostname - set new hostname
2. /etc/conf.d/net - set new ip (if static ip)
3. /etc/hosts - add new ip/hostname

On the host:
1. add new ip to: /etc/hosts
2. cd /etc/init.d && ln -s lxc lxc.<new_lxc_name>

Test start with:

lxc-start --name=<new_lxc_name> --foreground --logpriority=DEBUG

Fixups:

1. Lots of errors starting the lxc like:

   mkdir: cannot create directory '/sys/fs/cgroup/openrc/killprocs': Read-only file system

   For a possible fix, see: https://github.com/lxc/lxc/issues/1095

   lxc.mount.auto=cgroup:rw proc:mixed sys:mixed
   
   (was: lxc.mount.auto=cgroup:mixed proc:mixed sys:mixed)