On Mon, Apr 06, 2009 at 01:47:42PM -0500, Serge E. Hallyn wrote:
If a container has no root, liblxc remounts /proc. If the
system had marked / as MS_SHARED, then even though the
container is in a new mounts namespace, the mount event is
propagated back to the host mounts namespace, overwriting
/proc. After that, for instance, ps will no longer show
system processes.
A Fedora 11 default install has / MS_SHARED.
Make sure that root is not MS_SHARED before remounting
/proc. I'm making it MS_SLAVE so that the container
will receive mount events from the host, but not vice
versa.
Signed-off-by: Serge Hallyn <serue(a)us.ibm.com>
Doh, that's rather annoying. ACK to this patch.
Daniel
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