Alessandro Guido <a...@alessandroguido.name>
writes:
> Whenever I shutdown a container /var/lib/lxc get remounted ro.
This is because the reboot/halt jobs in /etc/rc[06].d/ try to mount the
root filesystem read-only before halting, and you do not disallow this
in your /etc/lxc/<container name>.conf:
lxc.cap.drop = sys_admin
Note that this will prevent *all* mount/umount/swapon/swapoff/... within
the container, so anything you use in the container's /etc/fstab or
/lib/init/fstab will need to be moved to lxc.mount.entry lines in your
lxc.conf -- in particular, upstart needs /proc to work at all, and wants
/var/run (tmpfs) for networking. lxc 0.7.2's lxc-ubuntu contains a
workaround for the latter that in places in the container's
/etc/init/lxc.conf.
Oh, and you may with to dpkg-divert --rename mount, umount, swapon and
swapoff and replace them with symlinks to /bin/true (or /bin/false), so
you get less noise on the container's /dev/console during boot/halt.
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