[Users] modifying vmdisk hook

[Nathanaël Blanchet]

Hi,

when executing several hook, I always have this issue in the vdsm logs :
File "/usr/libexec/vdsm/hooks/before_vm_start/40_directlun", line 9, in 
<module>
from vdsm import utils
ImportError: No module named vdsm

and the vm refuses to boot

how to correct this ?


Le 04/06/2012 17:16, Shahar Havivi a écrit :
> 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 at abes.fr
>>

-- 
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 at abes.fr