x/vmware-nsx
Code Issues Proposed changes

Merge "Avoid race with udev during ovs agent startup"

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This commit is contained in:
Jenkins 2013-10-03 14:41:13 +00:00 committed by Gerrit Code Review
commit caf9f8dc41
2 changed files with 19 additions and 1 deletions
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5
neutron/plugins/openvswitch/agent/ovs_neutron_agent.py
View File

@ -32,6 +32,7 @@ from oslo.config import cfg
from neutron.agent import l2population_rpc
from neutron.agent.linux import ip_lib
from neutron.agent.linux import ovs_lib
from neutron.agent.linux import utils
from neutron.agent import rpc as agent_rpc
from neutron.agent import securitygroups_rpc as sg_rpc
from neutron.common import config as logging_config
@ -778,6 +779,10 @@ class OVSNeutronAgent(sg_rpc.SecurityGroupAgentRpcCallbackMixin,
br.delete_port(phys_veth_name)
if ip_lib.device_exists(int_veth_name, self.root_helper):
ip_lib.IPDevice(int_veth_name, self.root_helper).link.delete()
# Give udev a chance to process its rules here, to avoid
# race conditions between commands launched by udev rules
# and the subsequent call to ip_wrapper.add_veth
utils.execute(['/sbin/udevadm', 'settle', '--timeout=10'])
int_veth, phys_veth = ip_wrapper.add_veth(int_veth_name,
phys_veth_name)
self.int_ofports[physical_network] = self.int_br.add_port(int_veth)

15
neutron/tests/unit/openvswitch/test_ovs_neutron_agent.py
View File

@ -23,6 +23,7 @@ import testtools
from neutron.agent.linux import ip_lib
from neutron.agent.linux import ovs_lib
from neutron.agent.linux import utils
from neutron.common import constants as n_const
from neutron.openstack.common.rpc import common as rpc_common
from neutron.plugins.openvswitch.agent import ovs_neutron_agent
@ -327,6 +328,7 @@ class TestOvsNeutronAgent(base.BaseTestCase):
with contextlib.nested(
mock.patch.object(ip_lib, "device_exists"),
mock.patch.object(sys, "exit"),
mock.patch.object(utils, "execute"),
mock.patch.object(ovs_lib.OVSBridge, "remove_all_flows"),
mock.patch.object(ovs_lib.OVSBridge, "add_flow"),
mock.patch.object(ovs_lib.OVSBridge, "add_port"),
@ -337,15 +339,26 @@ class TestOvsNeutronAgent(base.BaseTestCase):
mock.patch.object(ip_lib.IpLinkCommand, "delete"),
mock.patch.object(ip_lib.IpLinkCommand, "set_up"),
mock.patch.object(ip_lib.IpLinkCommand, "set_mtu")
) as (devex_fn, sysexit_fn, remflows_fn, ovs_addfl_fn,
) as (devex_fn, sysexit_fn, utilsexec_fn, remflows_fn, ovs_addfl_fn,
ovs_addport_fn, ovs_delport_fn, br_addport_fn,
br_delport_fn, addveth_fn, linkdel_fn, linkset_fn, linkmtu_fn):
devex_fn.return_value = True
parent = mock.MagicMock()
parent.attach_mock(utilsexec_fn, 'utils_execute')
parent.attach_mock(linkdel_fn, 'link_delete')
parent.attach_mock(addveth_fn, 'add_veth')
addveth_fn.return_value = (ip_lib.IPDevice("int-br-eth1"),
ip_lib.IPDevice("phy-br-eth1"))
ovs_addport_fn.return_value = "int_ofport"
br_addport_fn.return_value = "phys_veth"
self.agent.setup_physical_bridges({"physnet1": "br-eth"})
expected_calls = [mock.call.link_delete(),
mock.call.utils_execute(['/sbin/udevadm',
'settle',
'--timeout=10']),
mock.call.add_veth('int-br-eth',
'phy-br-eth')]
parent.assert_has_calls(expected_calls, any_order=False)
self.assertEqual(self.agent.int_ofports["physnet1"],
"phys_veth")
self.assertEqual(self.agent.phys_ofports["physnet1"],