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Ответ: [Libvir] Why QEMU?



Thanks.

2008/2/22, Richard W.M. Jones <rjones redhat com>:
> On Fri, Feb 22, 2008 at 01:47:44PM +0300, Anton Protopopov wrote:
> > When I executing virsh to connect to openvz I get the following:
> > [root localhost ~]# virsh -c openvz:///system
> > libvir: QEMU error : cannot create bridge 'virbr0' : File exists
> > Failed to autostart network 'default': cannot create bridge 'virbr0' :
> > File existsWelcome to virsh, the virtualization interactive terminal.
> > Type: 'help' for help with commands
> > 'quit' to quit
> > virsh #
> > ...
> > But I didn't want to connect to QEMU...
>
> For reasons of history the qemu driver contains the network driver.
>
> When libvirt connects to the hypervisor it actually makes two
> connections -- one (which may be local, not an actual socket) to the
> hypervisor you requested, and another (usually over a Unix socket) to
> libvirtd for virNetwork* operations.
>
> The network connection is entirely optional[1], which is why you get
> the error above but your connection succeeds.
>
> Rich.
>
> [1] Optional unless you want to make virNetwork* calls of course.
>
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