def device_from_node(conn, name=None, nodedev=None):
"""
Convert the passed device name to a VirtualHostDevice
instance, with proper error reporting. Name can be any of the
values accepted by NodeDeviceParser.lookupNodeName. If a node
device name is not specified, a virtinst.NodeDevice instance can
be passed in to create a dev from.
@param conn: libvirt.virConnect instance to perform the lookup on
@param name: optional libvirt node device name to lookup
@param nodedev: optional L{virtinst.NodeDevice} instance to use
@rtype: L{virtinst.VirtualHostDevice} instance
"""
if not name and not nodedev:
raise ValueError(_("'name' or 'nodedev' required."))
if nodedev:
nodeinst = nodedev
else:
nodeinst = NodeDeviceParser.lookupNodeName(conn, name)
if isinstance(nodeinst, NodeDeviceParser.PCIDevice):
return VirtualHostDevicePCI(conn, nodedev=nodeinst)
elif isinstance(nodeinst, NodeDeviceParser.USBDevice):
return VirtualHostDeviceUSB(conn, nodedev=nodeinst)
elif isinstance(nodeinst, NodeDeviceParser.NetDevice):
parentname = nodeinst.parent
try:
return VirtualHostDevice.device_from_node(conn,
name=parentname)
except:
logging.exception("Fetching net parent device failed.")
raise ValueError(
_("Node device type '%s' cannot be attached to "
" guest.") % nodeinst.device_type)
def setup(self, conn=None):
"""
DEPRECATED: Please use setup_dev instead
"""
if not conn:
conn = self.conn
if not NodeDeviceParser.is_pci_detach_capable(conn):
return
try:
try:
# Do this as a sanity check, so that we don't fail at domain
# start time. This is independent of the 'managed' state, since
# this should work regardless.
node = conn.nodeDeviceLookupByName(self._nodedev.name)
node.dettach()
node.reset()
except libvirt.libvirtError, e:
if not support.is_error_nosupport(e):
raise
except Exception, e:
raise RuntimeError(_("Could not detach PCI device: %s" % str(e)))
def setup(self, conn = None):
"""
DEPRECATED: Please use setup_dev instead
"""
if not conn:
conn = self.conn
if not NodeDeviceParser.is_pci_detach_capable(conn):
return
try:
try:
# Do this as a sanity check, so that we don't fail at domain
# start time. This is independent of the 'managed' state, since
# this should work regardless.
node = conn.nodeDeviceLookupByName(self._nodedev.name)
node.dettach()
node.reset()
except libvirt.libvirtError, e:
if not support.is_error_nosupport(e):
raise
except Exception, e:
raise RuntimeError(_("Could not detach PCI device: %s" % str(e)))
def device_from_node(conn, name=None, nodedev=None):
"""
Convert the passed device name to a VirtualHostDevice
instance, with proper error reporting. Name can be any of the
values accepted by NodeDeviceParser.lookupNodeName. If a node
device name is not specified, a virtinst.NodeDevice instance can
be passed in to create a dev from.
@param conn: libvirt.virConnect instance to perform the lookup on
@param name: optional libvirt node device name to lookup
@param nodedev: optional L{virtinst.NodeDevice} instance to use
@rtype: L{virtinst.VirtualHostDevice} instance
"""
if not name and not nodedev:
raise ValueError(_("'name' or 'nodedev' required."))
if nodedev:
nodeinst = nodedev
else:
nodeinst = NodeDeviceParser.lookupNodeName(conn, name)
if isinstance(nodeinst, NodeDeviceParser.PCIDevice):
return VirtualHostDevicePCI(conn, nodedev=nodeinst)
elif isinstance(nodeinst, NodeDeviceParser.USBDevice):
return VirtualHostDeviceUSB(conn, nodedev=nodeinst)
elif isinstance(nodeinst, NodeDeviceParser.NetDevice):
parentname = nodeinst.parent
try:
return VirtualHostDevice.device_from_node(conn,
name=parentname)
except:
logging.exception("Fetching net parent device failed.")
raise ValueError(_("Node device type '%s' cannot be attached to "
" guest.") % nodeinst.device_type)
