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Re: [et-mgmt-tools] [PATCH] virt-manager: Use avahi to poll for local servers

On Mon, Aug 18, 2008 at 11:28:18AM -0400, Cole Robinson wrote:
> The attached patch adds support for avahi polling
> to the virt-manager 'Open Connection' dialog.
> libvirtd advertises itself via avahi so we get the
> hard stuff for free :). To test this you will need
> to make sure Multicast DNS (mDNS, port 5353 udp) is
> open on your machine.
> I had a few more screenshots but fedorapeople isn't
> responding. The basic flow is: 'Open Conn' defaults
> to selecting a local connection, so the 'browse'
> checkbox and list are inactive. If a remote conn
> type is selected, the 'browse' checkbox and 
> 'hostname' field become active, but we don't
> immediately default to actually browsing the
> network. Once the 'browse' checkbox is clicked the
> list becomes active and starts asynchronously
> populating. When an entry in the list is selected
> its hostname (or IP address if the hostname wasn't
> resolved) is placed in the "hostname" field.

If the avahi daemon isn't running virt-manager isn't toohappy.
We probably need to make sure we fallback & disable this mDNS
stuff when avahi fails

Traceback (most recent call last):
  File "/home/berrange/src/xen/virt-manager--devel/src/virtManager/engine.py", line 183, in _do_show_connect
  File "/home/berrange/src/xen/virt-manager--devel/src/virtManager/engine.py", line 248, in show_connect
    self.windowConnect = vmmConnect(self.get_config(), self)
  File "/home/berrange/src/xen/virt-manager--devel/src/virtManager/connect.py", line 91, in __init__
    self.server = dbus.Interface(self.bus.get_object("org.freedesktop.Avahi", "/")
  File "/usr/lib/python2.5/site-packages/dbus/bus.py", line 244, in get_object
  File "/usr/lib/python2.5/site-packages/dbus/proxies.py", line 241, in __init__
    self._named_service = conn.activate_name_owner(bus_name)
  File "/usr/lib/python2.5/site-packages/dbus/bus.py", line 183, in activate_name_owner
  File "/usr/lib/python2.5/site-packages/dbus/bus.py", line 281, in start_service_by_name
    'su', (bus_name, flags)))
  File "/usr/lib/python2.5/site-packages/dbus/connection.py", line 622, in call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.Avahi was not provided by any .service files

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