libvirt users - Jan 2014 - Re: Retry reboots in xmls files for libvirt

Hi,

I have a virtual machine defined by xml that start from pxe (network boot),
my problem is that sometimes the dhcp server is not ready when the virtual
machine try to boot.

I need that the virtual machine keep asking for dhcp (network reboot) many
times, until dhcp is ready and can start the virtual machine with a valid
ip.

How can I configure that in the xml file?

BR

//Fernando

On Thu, Jan 16, 2014 at 04:59:20PM +0100, Fernando Porro
wrote:
> Hi,
>
> I have a virtual machine defined by xml that start from pxe (network boot),
> my problem is that sometimes the dhcp server is not ready when the virtual
> machine try to boot.
>
> I need that the virtual machine keep asking for dhcp (network reboot) many
> times, until dhcp is ready and can start the virtual machine with a valid
> ip.
>
> How can I configure that in the xml file?
>
I'm not sure you can configure that for ipxe or qemu, but you can set
the reboot timeout for the machine in <os> tag like this:

<bios rebootTimeout='0'/>

that means immediate reboot when there is no place to boot from.  In
order for it not to boot from any other device or for any other
details, see http://libvirt.org/formatdomain.html

Have a nice day,
Martin
> BR
>
> //Fernando
> _______________________________________________
> libvirt-users mailing list
> libvirt-users@redhat.com
> https://www.redhat.com/mailman/listinfo/libvirt-users

Hi,

I am not using quemu, i am using XEN, is there any option to allow me to do
that?

In the libvirt documentation specify that those options are only available
on quemu.

BR

//Fernando


2014/1/16 Martin Kletzander <mkletzan@redhat.com>
> On Thu, Jan 16, 2014 at 04:59:20PM +0100, Fernando Porro wrote:
> > Hi,
> >
> > I have a virtual machine defined by xml that start from pxe (network
> boot),
> > my problem is that sometimes the dhcp server is not ready when the
> virtual
> > machine try to boot.
> >
> > I need that the virtual machine keep asking for dhcp (network reboot)
> many
> > times, until dhcp is ready and can start the virtual machine with a
valid
> > ip.
> >
> > How can I configure that in the xml file?
> >
>
> I'm not sure you can configure that for ipxe or qemu, but you can set
> the reboot timeout for the machine in <os> tag like this:
>
> <bios rebootTimeout='0'/>
>
> that means immediate reboot when there is no place to boot from.  In
> order for it not to boot from any other device or for any other
> details, see http://libvirt.org/formatdomain.html
>
> Have a nice day,
> Martin
>
> > BR
> >
> > //Fernando
>
> > _______________________________________________
> > libvirt-users mailing list
> > libvirt-users@redhat.com
> > https://www.redhat.com/mailman/listinfo/libvirt-users
>