#!/usr/bin/python
-# Copyright (c) 2009, 2010 Nicira Networks
+# Copyright (c) 2009, 2010, 2011 Nicira Networks
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# A daemon to monitor the external_ids columns of the Bridge and
# Interface OVSDB tables. Its primary responsibility is to set the
# "bridge-id" and "iface-id" keys in the Bridge and Interface tables,
-# respectively. It also looks for the use of "network-uuids" in the
-# Bridge table and duplicates its value to the preferred "xs-network-uuids".
+# respectively.
import getopt
import logging, logging.handlers
return True
-# By default, the "bridge-id" external id in the Bridge table is the
-# same as "xs-network-uuids". This may be overridden by defining a
-# "nicira-bridge-id" key in the "other_config" field of the network
-# record of XAPI.
-def get_bridge_id(br_name, default=None):
+def get_network_by_bridge(br_name):
if not init_session():
s_log.warning("Failed to get bridge id %s because"
" XAPI session could not be initialized" % br_name)
- return default
+ return None
for n in session.xenapi.network.get_all():
rec = session.xenapi.network.get_record(n)
- if rec['bridge'] != br_name:
- continue
+ if rec['bridge'] == br_name:
+ return rec
+
+ return None
+
+# By default, the "bridge-id" external id in the Bridge table is the
+# same as "xs-network-uuids". This may be overridden by defining a
+# "nicira-bridge-id" key in the "other_config" field of the network
+# record of XAPI. If nicira-bridge-id is undefined returns default.
+# On error returns None.
+def get_bridge_id(br_name, default=None):
+ rec = get_network_by_bridge(br_name)
+ if rec:
return rec['other_config'].get('nicira-bridge-id', default)
+ return None
# By default, the "iface-id" external id in the Interface table is the
# same as "xs-vif-uuid". This may be overridden by defining a
s_log.warning("Could not find XAPI entry for VIF %s" % if_name)
return xs_vif_uuid
-def set_external_id(table, record, key, value):
- col = 'external-ids:"' + key + '"="' + value + '"'
- cmd = [vsctl, "--timeout=30", "-vANY:console:emer", "set", table, record, col]
+def call_vsctl(args):
+ cmd = [vsctl, "--timeout=30", "-vANY:console:emer"] + args
exitcode = subprocess.call(cmd)
if exitcode != 0:
s_log.warning("Couldn't call ovs-vsctl")
-# XAPI on XenServer 5.6 uses the external-id "network-uuids" for internal
-# networks, but we now prefer "xs-network-uuids". Look for its use and
-# write our preferred external-id.
-def update_network_uuids(name, ids):
- if ids["network-uuids"] and not ids["xs-network-uuids"]:
- set_external_id("Bridge", name, "xs-network-uuids",
- ids["network-uuids"])
+def set_external_id(table, record, key, value):
+ col = 'external-ids:"' + key + '"="' + value + '"'
+ call_vsctl(["set", table, record, col])
+
+def update_fail_mode(name):
+ rec = get_network_by_bridge(name)
+
+ if not rec:
+ return
+
+ fail_mode = rec['other_config'].get('vswitch-controller-fail-mode')
+
+ if not fail_mode:
+ pools = session.xenapi.pool.get_all()
+ if len(pools) == 1:
+ prec = session.xenapi.pool.get_record(pools[0])
+ fail_mode = prec['other_config'].get('vswitch-controller-fail-mode')
+
+ if fail_mode not in ['standalone', 'secure']:
+ fail_mode = 'standalone'
+
+ call_vsctl(["set", "bridge", name, "fail_mode=" + fail_mode])
def update_bridge_id(name, ids):
id = get_bridge_id(name, ids.get("xs-network-uuids"))
for rec in idl.data["Bridge"].itervalues():
name = rec.name.as_scalar()
xs_network_uuids = rec.external_ids.get("xs-network-uuids")
- network_uuids = rec.external_ids.get("network-uuids")
- new_bridges[name] = {"xs-network-uuids": xs_network_uuids,
- "network-uuids": network_uuids}
+ new_bridges[name] = {"xs-network-uuids": xs_network_uuids}
new_interfaces = {}
for rec in idl.data["Interface"].itervalues():
if bridges != new_bridges:
for name,ids in new_bridges.items():
- # Network uuids shouldn't change in the life of a bridge,
- # so only check for "network-uuids" on creation.
if name not in bridges:
- update_network_uuids(name, ids)
+ update_fail_mode(name)
if (name not in bridges) or (bridges[name] != ids):
update_bridge_id(name, ids)