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[1] reported that we are removing network's backend too early. I didn't really get the reproducer but libvirt behaves strangely when a guest does not confirm the removal, e.g., it does not support PCI hotplug. In such case, detaching a network device leaves its frontend in place but removes the backend, which makes the device unusable for the guest. Moreover attaching the same device again succeeds and both the guest and libvirt will see two network interfaces attached but only one of them is actually working. I checked with Paolo Bonzini and he confirmed we should only remove a backend after seeing DEVICE_DELETED event for a corresponding frontend. [1] https://www.redhat.com/archives/libvir-list/2014-March/msg01740.html Signed-off-by: Jiri Denemark <jdenemar@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>