def unplug_backend_devices(device_list):
"""Unplug the backend devices"""
for dev in device_list:
try:
dev.unplug_hook()
drive = dev.get_param("drive")
if drive:
if Flags.BLOCKDEV in vm.devices.caps:
format_node = vm.devices[drive]
nodes = [format_node]
nodes.extend((n for n in format_node.get_child_nodes()))
for node in nodes:
if not node.verify_unplug(
node.unplug(vm.monitor), vm.monitor):
raise DeviceUnplugError(
node, "Failed to unplug blockdev node.",
vm.devices)
vm.devices.remove(node, True if isinstance(
node, qdevices.QBlockdevFormatNode) else False)
if not isinstance(node,
qdevices.QBlockdevFormatNode):
format_node.del_child_node(node)
else:
vm.devices.remove(drive)
vm.devices.remove(dev, True)
except (DeviceError, KeyError) as exc:
dev.unplug_unhook()
raise DeviceUnplugError(dev, exc, vm.devices)
def _unplug_atomic(self, device, monitor):
""" Function unplug device to devices representation. """
device = self.vm.devices[device]
with _LOCK:
self.vm.devices.set_dirty()
out = self._plug(device.unplug, monitor)
if not utils_misc.wait_for(
lambda: device.verify_unplug(out, monitor) is True,
first=1,
step=5,
timeout=self.VERIFY_UNPLUG_TIMEOUT):
with _LOCK:
self.vm.devices.set_clean()
return out, device.verify_unplug(out, monitor)
ver_out = device.verify_unplug(out, monitor)
try:
device.unplug_hook()
drive = device.get_param("drive")
if drive:
if self.vm.check_capability(Flags.BLOCKDEV):
# top node
node = self.vm.devices[drive]
nodes = [node]
# Build the full nodes list
for node in nodes:
child_nodes = node.get_child_nodes()
nodes.extend(child_nodes)
for node in nodes:
parent_node = node.get_parent_node()
child_nodes = node.get_child_nodes()
recursive = True if len(child_nodes) > 0 else False
if not node.verify_unplug(
self._plug(node.unplug, monitor), monitor):
raise DeviceUnplugError(
node, "Failed to unplug blockdev node.", self)
with _LOCK:
self.vm.devices.remove(node, recursive)
if parent_node:
parent_node.del_child_node(node)
else:
with _LOCK:
self.vm.devices.remove(drive)
with _LOCK:
self.vm.devices.remove(device, True)
if ver_out is True:
with _LOCK:
self.vm.devices.set_clean()
elif out is False:
raise DeviceUnplugError(
device, "Device wasn't unplugged in qemu, but it was "
"unplugged in device representation.", self)
except (DeviceError, KeyError) as exc:
device.unplug_unhook()
raise DeviceUnplugError(device, exc, self)
return out, ver_out
def _unplug_atomic(self, device, monitor):
""" Function unplug device to devices representation. """
device = self.vm.devices[device]
with _LOCK:
self.vm.devices.set_dirty()
out = device.unplug(monitor)
if not utils_misc.wait_for(
lambda: device.verify_unplug(out, monitor) is True,
first=1,
step=5,
timeout=60):
with _LOCK:
self.vm.devices.set_clean()
return out, device.verify_unplug(out, monitor)
ver_out = device.verify_unplug(out, monitor)
try:
device.unplug_hook()
drive = device.get_param("drive")
if drive:
if self.vm.check_capability(Flags.BLOCKDEV):
format_node = self.vm.devices[drive]
nodes = [format_node]
nodes.extend((n for n in format_node.get_child_nodes()))
for node in nodes:
if not node.verify_unplug(node.unplug(monitor),
monitor):
raise DeviceUnplugError(
node, "Failed to unplug blockdev node.", self)
with _LOCK:
self.vm.devices.remove(
node, True if isinstance(
node, qdevices.QBlockdevFormatNode) else
False)
if not isinstance(node, qdevices.QBlockdevFormatNode):
format_node.del_child_node(node)
else:
with _LOCK:
self.vm.devices.remove(drive)
with _LOCK:
self.vm.devices.remove(device, True)
if ver_out is True:
with _LOCK:
self.vm.devices.set_clean()
elif out is False:
raise DeviceUnplugError(
device, "Device wasn't unplugged in qemu, but it was "
"unplugged in device representation.", self)
except (DeviceError, KeyError) as exc:
device.unplug_unhook()
raise DeviceUnplugError(device, exc, self)
return out, ver_out