[et-mgmt-tools] virt-manager feature request

[Farkas Levente]

Daniel P. Berrange wrote:
> On Sat, Oct 06, 2007 at 02:50:07PM +0200, Farkas Levente wrote:
>> hi,
>> there are different hypervisor supported by virt-manager and it's not
>> possible to add all features of all hypervisor to the gui, what's more
>> even for common features missing from the gui. meanwhile these wil be
>> implemented it'd be useful to be able to use these feature even for
>> those who use virt-manager. so imho it'd be useful if i can define
>> additional parameters to the command line argument which is composed by
>> virt-manager or libvirt. eg: with kvm as all newer version then kvm-36
>> has many bugs the developer always ask what happendes with
>> -no-kvm-irqchip? but currently i can't run guests from virt-manager with
>> this settings. so it'd be useful if i can define addition command line
>> argument to qemu-kvm eg. a simple imput line which is appended to the
>> command line would be useful. and all hypervisor can benefit from this
>> feature.
> 
> The trouble with allowing the defining of arbitrary extra command line
> parameters is that this can change the behaviour of QEMU which will impact 
> the ability of libvirt to reliably manage the guest process. QEMU is very
> sensitive to the order of command line args in some cases & adding extra
> args can have unpredictable effects on the way it runs. Furthermore hacks 
> like -no-kvm-irqchip are not sustainable / supportable long term - the only 
> viable approach is to make KVM itself more reliable. If this means sticking 
> on -36 for a while while bugs with the KVM IRQ handling in newer releases 
> are ironed out so be it. 

but in this way we can't help/speed up this process. and there will be
always new flags. or you can mark it as advanced options:-)

-- 
  Levente                               "Si vis pacem para bellum!"