[Lxc-users] [lxc-users] Sharing the host /lib with ubuntu 10.04 guest

[Serge E. Hallyn]

Quoting Serge E. Hallyn (serge.hallyn at canonical.com):
> Quoting Pierre-François Bonnefoi (pierre-francois.bonnefoi at unilim.fr):
> > hello,
> > 
> > I've encountered a new problem :
> > I would like to decrease the disk usage of my container by sharing some big directories.
> > When I try to share the /lib directory between my host under Ubuntu 10.04 with my guest under Ubuntu 10.0.4, I've got the problem that the file /lib/init/fstab from the host is shared with the container and create some panic with some not needed mounts.
> > I've try to define a /etc/fstab but I can't prevent the guest system to analyze the /lib/init/fstab file.
> > (And I don't want to modify my host Ubuntu...).
> > 
> > How could I perform this ?
> 
> Hm, I'm not sure about the sequence of events, but I suspect you could
> put
> 
> 	/etc/containerfstab /lib/init/fstab	none	defaults 0 0

Haha, yeah, s/defaults/bind/

> 
> into /var/lib/lxc/${CONTAINERNAME}/fstab.  That should happen
> after the mounts namespace has been unshared, and before the
> container's init process does mountall.  A good start for /etc/containerfstab
> might be the stock container fstab:
> 
> ######################################################
> # /lib/init/fstab: lxc system fstab
> none            /spu                      spufs           gid=spu,optional                  0 0
> none            /tmp                      none            defaults                          0 0
> none            /var/lock                 tmpfs           nodev,noexec,nosuid,showthrough   0 0
> none            /lib/init/rw              tmpfs           mode=0755,nosuid,optional         0 0
> ######################################################
> 
> -serge
> 
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