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57db02e8c0
When using the 'ns' cgroup controller, the moment a process calls 'unshare(CLONE_NEWNS)', it will be given a private cgroup tree under its current location. This really messages up the LXC controller process, because it ends up creating the containers' cgroup in the wrong place. The fix is fairly easy, just move the cgroup setup before the code which calls unshare(). The 'ns' controller will still create extra undesired cgroups, but they at least won't break libvirt's setup now. The patch also adds a missing cgroups allow rule for /dev/tty device node
LibVirt : simple API for virtualization
Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). It is free software
available under the GNU Lesser General Public License. Virtualization of
the Linux Operating System means the ability to run multiple instances of
Operating Systems concurrently on a single hardware system where the basic
resources are driven by a Linux instance. The library aim at providing
long term stable C API initially for the Xen paravirtualization but
should be able to integrate other virtualization mechanisms if needed.
Daniel Veillard <veillard@redhat.com>