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Hi All,

I have an old Essex cluster that we are getting ready to phase out for
grizzly.  Unfortunately over the weekend one of the compute nodes powered
off (power supply failure it looks like).  When I tried a "nova reboot
<UUID>"

I got:

2013-07-07 21:17:34 ERROR nova.rpc.amqp
[req-d2ea5f46-9dc2-4788-9951-07d985a1f8dc 6986639ba3c84ab5b05fdd2e122101f0
3806a811d2d34542bdfc5d7f31ce7b89] Exception during message handling
2013-07-07 21:17:34 TRACE nova.rpc.amqp Traceback (most recent call last):
2013-07-07 21:17:34 TRACE nova.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/nova/rpc/amqp.py", line 253, in
_process_data
2013-07-07 21:17:34 TRACE nova.rpc.amqp     rval = node_func(context=ctxt,
**node_args)
2013-07-07 21:17:34 TRACE nova.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/nova/exception.py", line 114, in wrapped
2013-07-07 21:17:34 TRACE nova.rpc.amqp     return f(*args, **kw)
2013-07-07 21:17:34 TRACE nova.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 159, in
decorated_function
2013-07-07 21:17:34 TRACE nova.rpc.amqp     function(self, context,
instance_uuid, *args, **kwargs)
2013-07-07 21:17:34 TRACE nova.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 183, in
decorated_function
2013-07-07 21:17:34 TRACE nova.rpc.amqp     sys.exc_info())
2013-07-07 21:17:34 TRACE nova.rpc.amqp   File
"/usr/lib/python2.7/contextlib.py", line 24, in __exit__
2013-07-07 21:17:34 TRACE nova.rpc.amqp     self.gen.next()
2013-07-07 21:17:34 TRACE nova.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 177, in
decorated_function
2013-07-07 21:17:34 TRACE nova.rpc.amqp     return function(self, context,
instance_uuid, *args, **kwargs)
2013-07-07 21:17:34 TRACE nova.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 904, in
reboot_instance
2013-07-07 21:17:34 TRACE nova.rpc.amqp     reboot_type)
2013-07-07 21:17:34 TRACE nova.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/nova/exception.py", line 114, in wrapped
2013-07-07 21:17:34 TRACE nova.rpc.amqp     return f(*args, **kw)
2013-07-07 21:17:34 TRACE nova.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/nova/virt/libvirt/connection.py", line
721, in reboot
2013-07-07 21:17:34 TRACE nova.rpc.amqp     if self._soft_reboot(instance):
2013-07-07 21:17:34 TRACE nova.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/nova/virt/libvirt/connection.py", line
757, in _soft_reboot
2013-07-07 21:17:34 TRACE nova.rpc.amqp     dom.create()
2013-07-07 21:17:34 TRACE nova.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/libvirt.py", line 551, in create
2013-07-07 21:17:34 TRACE nova.rpc.amqp     if ret == -1: raise
libvirtError ('virDomainCreate() failed', dom=self)
2013-07-07 21:17:34 TRACE nova.rpc.amqp libvirtError: Cannot get interface
MTU on 'br14': No such device
2013-07-07 21:17:34 TRACE nova.rpc.amqp


So I tried starting it manually:

root at compute-01:/etc/libvirt/qemu# virsh create instance-00000035.xml
error: Failed to create domain from instance-00000035.xml
error: Cannot get interface MTU on 'br14': No such device


Any idea what I might be doing wrong?  All the services show :-) with
nova-manage


Thanks for your help...

Sam
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