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https://bugzilla.redhat.com/show_bug.cgi?id=1366108 There are couple of things that needs to be done in order to allow vhost-user hotplug. Firstly, vhost-user requires a chardev which is connected to vhost-user bridge and through which qemu communicates with the bridge (no acutal guest traffic is sent through there, just some metadata). In order to generate proper chardev alias, we must assign device alias way sooner. Then, because we are plugging the chardev first, we need to do the proper undo if something fails - that is remove netdev too. We don't want anything to be left over in case attach fails at some point. Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
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>