libvirt users - Nov 2014 - Re: how to modify virsh vm start script

I use libvirt to manage a QEMU/KVM system. Starting a VM only by using
  > virsh start vmname
What I want to know is how to add an option to virsh vm's start
script, in my case I want to add QEMU logging option (-d and -D). I
can see from
  > ps aux | grep qemu
that current VM started using virsh not including those options

~ady

On Tue, Nov 25, 2014 at 12:46:41PM +0900, Ady Wahyudi Paundu
wrote:
>I use libvirt to manage a QEMU/KVM system. Starting a VM only by using
>  > virsh start vmname
>What I want to know is how to add an option to virsh vm's start
>script, in my case I want to add QEMU logging option (-d and -D). I
>can see from
>  > ps aux | grep qemu
>that current VM started using virsh not including those options
>
This is not supported in our XML, but you can use passthrough of
arbitrary options:

http://libvirt.org/drvqemu.html

E.g.:

<domain type='qemu'
 xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>
 ...
  <qemu:commandline>
    <qemu:arg value='-d'/>
    <qemu:arg value='cpu'/>
  </qemu:commandline>
  ...
</domain>

Martin

Hi Martin,
it works \(^o^)/
thank you.

Best regards,
AdyWP

On 11/25/14, Martin Kletzander <mkletzan@redhat.com>
wrote:
> On Tue, Nov 25, 2014 at 12:46:41PM +0900, Ady Wahyudi Paundu wrote:
>>I use libvirt to manage a QEMU/KVM system. Starting a VM only by using
>>  > virsh start vmname
>>What I want to know is how to add an option to virsh vm's start
>>script, in my case I want to add QEMU logging option (-d and -D). I
>>can see from
>>  > ps aux | grep qemu
>>that current VM started using virsh not including those options
>>
>
> This is not supported in our XML, but you can use passthrough of
> arbitrary options:
>
> http://libvirt.org/drvqemu.html
>
> E.g.:
>
> <domain type='qemu'
>  xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>
>  ...
>   <qemu:commandline>
>     <qemu:arg value='-d'/>
>     <qemu:arg value='cpu'/>
>   </qemu:commandline>
>   ...
> </domain>
>
> Martin
>