[libvirt-users] read-only rootfs for lxc containers
Daniel P. Berrange
berrange at redhat.com
Thu Dec 8 15:53:49 UTC 2011
On Thu, Dec 08, 2011 at 07:47:28AM -0800, Chris Haumesser wrote:
> Daniel P. Berrange wrote:
> > Hmm, so your actual filesystem on the host side is read only ?
>
> Yup, mounting a squashfs in RAM.
>
> > I'll have to think about how to make it work when the host
> > FS itself is readonly. Probably have to define some location
> > that is guarenteed to exist, instead of trying to create a
> > '/.oldroot' location ourselves.
>
>
> I suppose so, yes. What is the purpose of .oldroot? When I switch to a
> rw filesystem, I see that .oldroot gets created, but it is just an empty
> directory.
It is used as an intermediate temporary location when we pivot from
one root filesystem to another, so you shouldn't expect to see anything
there. We just need a directory somewhere to pivot on, and chose to
use /.oldroot
Daniel
--
|: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :|
|: http://libvirt.org -o- http://virt-manager.org :|
|: http://autobuild.org -o- http://search.cpan.org/~danberr/ :|
|: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|
More information about the libvirt-users
mailing list