Handle update of devices added/removed from a VM (f59be6d0) · Commits · Mirror / cc-node

cloudcontrol/node/hypervisor/kvm.py

+17 −0

Original line number	Diff line number	Diff line
		@@ -83,12 +83,20 @@ class KVM(object):
		logger.debug('Domains: %s', self.domains)

		self.vir_con.domainEventRegister(self.vir_cb, None)
		self.vir_cb_id_dev_add = self.vir_con.domainEventRegisterAny(None,
		libvirt.VIR_DOMAIN_EVENT_ID_DEVICE_ADDED,
		self.vir_cb_devices, None)
		self.vir_cb_id_dev_del = self.vir_con.domainEventRegisterAny(None,
		libvirt.VIR_DOMAIN_EVENT_ID_DEVICE_REMOVED,
		self.vir_cb_devices, None)

		def stop(self):
		self.vir_event_loop.stop()
		# unregister callback
		try:
		self.vir_con.domainEventDeregister(self.vir_cb)
		self.vir_con.domainEventDeregisterAny(self.vir_cb_id_dev_add)
		self.vir_con.domainEventDeregisterAny(self.vir_cb_id_dev_del)
		except libvirt.libvirtError:
		# in case the libvirt connection is broken, it will raise the error
		pass
		@@ -167,6 +175,15 @@ class KVM(object):
		vm.state = state
		self.update_domain_count()

		def vir_cb_devices(self, conn, dom, device, opaque):
		"""Callback for device add/removed from a domain."""
		logger.debug('Received device event on domain %s, dev %s', dom.name(), device)
		vm = self.domains.get(dom.name())
		if vm is not None:
		# Unregister/register VM to update devices list:
		self.vm_unregister(vm.name)
		self.vm_register(dom)

		def vm_register(self, dom, redefine_on_stop=False):
		"""Register a VM to the hypervisor object.