# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
+import sys
import syslog
import os
global the_root_prefix
the_root_prefix = prefix
+log_destination = "syslog"
+def get_log_destination():
+ """Returns the current log destination.
+ 'syslog' means "log to syslog".
+ 'stderr' means "log to stderr"."""
+ return log_destination
+def set_log_destination(dest):
+ global log_destination
+ log_destination = dest
+
#
# Logging.
#
def log(s):
- syslog.syslog(s)
+ if get_log_destination() == 'syslog':
+ syslog.syslog(s)
+ else:
+ print >>sys.stderr, s
#
# Exceptions.
_NETWORK_ATTRS = { 'uuid': (_str_to_xml,_str_from_xml),
'bridge': (_str_to_xml,_str_from_xml),
+ 'MTU': (_str_to_xml,_str_from_xml),
'PIFs': (lambda x, p, t, v: _strlist_to_xml(x, p, 'PIFs', 'PIF', v),
lambda n: _strlist_from_xml(n, 'PIFs', 'PIF')),
'other_config': (lambda x, p, t, v: _otherconfig_to_xml(x, p, v, _NETWORK_OTHERCONFIG_ATTRS),
if f == "PIFs":
# drop PIFs on other hosts
self.__networks[n][f] = [p for p in rec[f] if self.__pif_on_host(p)]
+ elif f == "MTU" and f not in rec:
+ # XenServer 5.5 network records did not have an
+ # MTU field, so allow this to be missing.
+ pass
else:
self.__networks[n][f] = rec[f]
self.__networks[n]['other_config'] = {}
log("Invalid value for ethtool-%s = %s. Must be on|true|off|false." % (opt, val))
return settings,offload
-def mtu_setting(oc):
+# By default the MTU is taken from the Network.MTU setting for VIF,
+# PIF and Bridge. However it is possible to override this by using
+# {VIF,PIF,Network}.other-config:mtu.
+#
+# type parameter is a string describing the object that the oc parameter
+# is from. e.g. "PIF", "Network"
+def mtu_setting(nw, type, oc):
+ mtu = None
+
+ nwrec = db().get_network_record(nw)
+ if nwrec.has_key('MTU'):
+ mtu = nwrec['MTU']
+ else:
+ mtu = "1500"
+
if oc.has_key('mtu'):
+ log("Override Network.MTU setting on bridge %s from %s.MTU is %s" % \
+ (nwrec['bridge'], type, mtu))
+ mtu = oc['mtu']
+
+ if mtu is not None:
try:
- int(oc['mtu']) # Check that the value is an integer
- return oc['mtu']
+ int(mtu) # Check that the value is an integer
+ return mtu
except ValueError, x:
- log("Invalid value for mtu = %s" % oc['mtu'])
+ log("Invalid value for mtu = %s" % mtu)
+
return None
#