4 Jun
2012
4 Jun
'12
3:16 p.m.
On 04.06.12 17:03, Nathanaël Blanchet wrote:
> Hello,
>
> I'm testing hooks in vdsm and I need some help on modifying one of
> your pyhton script : vmdisk (http://gerrit.ovirt.org/gitweb?p=vdsm.git;a=blob;f=vdsm_hooks/vmdisk/before_vm_start.py;h=191d5c1af533e11d699b1d715d3c1ea60e28b787;hb=6817f1c6e3f5bc137d1f3bef45a2d0191465c7a3)
> the hook works great and I'm able now to attach a file device as a
> second disk. But I want this disk to be the first bootable disk
> instead of the block device one created into the engine. In order to
> change the boot order of the disk, I added those lines:
>
> ...
> source = domxml.createElement('source')
> source.setAttribute('file', devpath)
> disk.appendChild(source)
>
> boot = domxml.createElement('boot')
> boot.setAttribute('order', 1)
> disk.appendChild(boot)
>
> # find a name for vdXXX
> .....
>
> So the hook permit <boot order=1> item
> (http://libvirt.org/formatdomain.html#elementsDisks)
>
> But the vm refuses booting without any logs anywhere...
>
> What is wrong?
>
> Thanks for your help
Hi,
1. try to change the number to string:
boot.setAttribute('order', '1')
2. you have a libvirt log at /var/log/libvirt/qemu/youvmname.log
3. when the script enumerate all the disks you need to change the other disk
boot order:
for d in xmldisks:
# here look in each disk for boot element and change its order attribute
# to other number, ie 2, 3 ...
>
> --
> Nathanaël Blanchet
>
> Supervision réseau
> Pôle exploitation et maintenance
> Département des systèmes d'information
> 227 avenue Professeur-Jean-Louis-Viala
> 34193 MONTPELLIER CEDEX 5
> Tél. 33 (0)4 67 54 84 55
> Fax 33 (0)4 67 54 84 14
> blanchet@abes.fr
>