[libvirt-users] Status of Host machine.

[Michal Privoznik]

On 13.06.2014 11:35, Sijo Jose wrote:
> Hi Michal,
>
> virConnectOpen is for connecting to a host right..?
>
> I want to check the host status, whether the connection to the host is
> active or not..
> for that purpose we have to use virConnectIsAlive()
>
> I'm using libvirt python bindings,
> here is the function defnintion.
>
>      def isAlive(self):
>          """Determine if the connection to the hypervisor is still alive
>          A connection will be classed as alive if it is either local, or
> running
>          over a channel (TCP or UNIX socket) which is not closed. """
>          ret = libvirtmod.virConnectIsAlive(self._o)
>          if ret == -1: raise libvirtError ('virConnectIsAlive() failed',
> conn=self)
>          return ret
>
> Once if you connect to a host thereafter it is always giving status as
> 1(true), no matter whether the connection is broken or not..

You need to use recent libvirt which added keep-alive support (last 
stable version is 1.2.1 or newer) and then have a separate thread to run 
the event loop. Once you have all of these, isAlive() should work just fine.

Michal