We use virsh attach-device to hot-plug vhost-user nic with the following xml:
We can successfully hot plug more than one vhost-user nics with
the same unix path ('/var/run/vhost-user/port1') which is a chardev backend.
However, only one nic attached can work, because the unix path
We use virsh detach-device to hot-unplug a vhost-user net card,
and libvirtd will issue qmp_netdev_del, qmp_chardev_remove and
qmp_netdev_del. However, in qmp_netdev_del, qemu will remove
the chardev when cleanup the netdev. So libvirtd has no need to issue
qmp_chardev_remove to qemu any more.
Cha
