[one-users] How to get the OCCI self-services templates to make the system disk use the virtio drivers?

[Gerry O'Brien]

Hi Daniel,

   Thanks for the reply but unfortunately it will not solve our problem. 
Yes, if I define the *DEV_PREFIX * parameter in the template using the 
Sunstone GUI then everything works fine. But how do I do it for the OCCI 
self-service individual templates? Also, if I define it as a default 
value then I'm not sure our Windows images will work. We supply Windows 
7, 8 & Server 2008 R2 images and well as Debian in the self-service. 
Virtio is not by default built into Windows images.

     The reason we want to use the virtio drivers is that sometimes 
delays in the underlying NFS infrastructure may cause SCSI timeouts  in 
Debian images. It doesn't cause any real problems but it is 
disconcerting to our users. We hope that using the virtio drivers will 
be more forgiving.

         Regards,
           Gerry


On 13/03/2013 10:18, Daniel Molina wrote:
> Hi Gerry,
>
> On 12 March 2013 18:04, Gerry O'Brien <gerry at scss.tcd.ie> wrote:
>
>>   Hi,
>>
>>      How do you get the OCCI self-services templates to make an existing
>> system disk use the virtio drivers? If I put an entry in the template for
>> DISK it tries to create a second data disk, even when I explicitly try to
>> set the DISK_ID to 0 (see OOCI template and resulting template from
>> Sunstone below).
>>
> You can define that parameter in the image template and the virtual machine
> disk will use it.
> http://opennebula.org/documentation:rel3.8:img_template#template_attributes
>
> Also you can define default paremeters for kvm in the driver configuration
> file.
> http://opennebula.org/documentation:rel3.8:kvmg#default_attributes
>
> Cheers
>
>
>>              Regards,
>>                  Gerry
>>
>>
>>
>> CPU    = 1
>> VCPU   = 2
>> MEMORY = 1024
>>
>> GRAPHICS = [    type    = vnc,
>>                              listen  = 0.0.0.0 ]
>>
>> DISK    = [     disk_id         = 0,
>>                      type            = fs,
>>                     dev_prefix      = vd,
>>                      driver          = qcow2 ]
>>
>>
>>
>>     DISK
>>
>>
>>    0
>>
>>
>>    READONLY NO  CLUSTER_ID 100  IMAGE Debian-Selfservice [ver R1.1]
>> DATASTORE users  TYPE FILE  SOURCE
>> /var/lib/one/datastores/102/72ce4e42a590c42e79c298652b33df46  SAVE NO
>> DISK_ID 0  DATASTORE_ID 102  TARGET hda  DRIVER qcow2  DEV_PREFIX hd
>> IMAGE_ID 237  CLONE YES  TM_MAD shared
>>
>>    1
>>
>>
>>    TYPE fs  DISK_ID 1  TARGET vda  DRIVER qcow2  DEV_PREFIX vd
>>
>> --
>> Gerry O'Brien
>>
>> Systems Manager
>> School of Computer Science and Statistics
>> Trinity College Dublin
>> Dublin 2
>> IRELAND
>> 00 353 1 896 1341
>>
>>
>> _______________________________________________
>> Users mailing list
>> Users at lists.opennebula.org
>> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>>
>>
>


-- 
Gerry O'Brien

Systems Manager
School of Computer Science and Statistics
Trinity College Dublin
Dublin 2
IRELAND

00 353 1 896 1341

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