On Fri, Oct 25, 2013 at 12:35:04AM -0500, Serge Hallyn wrote: > Quoting Ulli Horlacher (frams...@rus.uni-stuttgart.de): > > On Thu 2013-10-24 (15:11), Serge Hallyn wrote: > > > > > If your kernel is new enough (check whether /proc/self/ns/mnt exists) > > > you could lxc-attach into the container with the -e flag to keep > > > elevated privileges, and do the remount. > > > > Ubuntu 12.04: > > > > root@vms3:~# l /proc/self/ns/mnt > > l: /proc/self/ns/mnt - No such file or directory > > > > root@vms3:~# uname -a > > Linux vms3 3.2.0-55-generic #85-Ubuntu SMP Wed Oct 2 12:29:27 UTC 2013 > > x86_64 x86_64 x86_64 GNU/Linux > > > > What is "new enough"?
>= 3.8 > > > > So, from the host system, a remount is not possible? > > Correct. The container is in a private mount namespace, > and you cannot enter it. You can view it somewhat through > /proc/$pid/root, but you can't mount under that because > you'd be trying to mix two vfsmounts belonging to different > mount namespaces. > > -serge -- Stéphane Graber Ubuntu developer http://www.ubuntu.com
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