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

[Daniel Molina]

On 13 March 2013 11:51, Gerry O'Brien <gerry at scss.tcd.ie> wrote:
> 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.

You have to include it in the Image (Debian-Selfservice [ver R1.1])
template not in the VM template. When the VM is created it will check
the image attributes and will include it in the DISK definition.

>
>     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
>
>
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>
>
>
>
>
> --
> Gerry O'Brien
>
> Systems Manager
> School of Computer Science and Statistics
> Trinity College Dublin
> Dublin 2
> IRELAND
>
> 00 353 1 896 1341



-- 
Daniel Molina
Project Engineer
OpenNebula - The Open Source Solution for Data Center Virtualization
www.OpenNebula.org | dmolina at opennebula.org | @OpenNebula