[libvirt] libvirt 0.7.5 vs qemu 0.12.1 imcompatability?

Tom Hughes tom at compton.nu
Wed Jan 6 16:11:17 UTC 2010

On 06/01/10 15:53, Daniel P. Berrange wrote:
> On Wed, Jan 06, 2010 at 03:38:29PM +0000, Tom Hughes wrote:
>> The update from qemu 0.11.0 to qemu 0.12.1 in the virt-preview
>> repository seems to have broken things. Starting a VM now just gives me
>> a blank screen and a log which says:
>> Option 'ipv4': Use 'on' or 'off'
>> Failed to parse "yes" for "dummy.ipv4"
>> I assume libvirt is sending a it a command on the monitor interface that
>> it no longer understands...
> That warning message should be harmless - all my VMs show that and
> they work ok. It is not actually something libirt sets - its a internal
> QEMU default setting which is wrong

Hmm... Well something is wrong because I just get a black screen. I 
don't even get the BIOS messages since I updated this morning.

Downgrading back to the fedora-updates version of qemu makes it work again.

BTW the trigger for that warning seems to be that I have 
listen='' set on the vnc adaptor to allow connections from remote 
machines, which causes libvirt to build a qemu command line with "-vnc".


Tom Hughes (tom at compton.nu)

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