Hi,
In order to support qemu NIC hotplug, we're planning
on sending tap file descriptors across the monitor to qemu.
If that sounds like magic, it is! One of the most
mystical and magical unix features around. See SCM_RIGHTS in
unix(7).
The upshot is that we need to switch to using a unix
socket for the qemu monitor. This patch series does just
that, while handling the tricky scenario where you start a vm
with an old version of libvirtd, update to a newer version
and restart libvirtd.
See also:
https://fedoraproject.org/wiki/Features/KVM_NIC_Hotplug
Cheers,
Mark.
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