[one-users] SmartOS drivers

[Ruben S. Montero]

Hi

Good to know that you made progress with the SmartOS zones, these are
great news.

Some thoughts about the persistence model:

1.- Images are copied from the image datastore to the system
datastore. The system datastore can be a local disk  so all the I/O is
performed locally. Now, how are the images copied to the system
datastore?. There are two alternatives:

* Shared FS, the image datastores are shared and the images copied to
the local disk. Note that for SmartOS there is no need to deal with a
shared storage

* SSH transfers, the images are scp'ied to the datastore

In this way, image movement and transfers are managed by opennebula.

2.- You may want to pre-distribute the images to the hosts. In that
case, simply add a custom probe that outputs the list of images
available at the node, something like:

IMAGES=ubuntu:centos:archlinux

This variable can be used as a requirement for the scheduler, and
combined with a suitable RANK to distribute the VMs across suitable
hosts.

I think that if we can go with 1 sould be far more easy...


Cheers

Ruben







On Sat, Dec 1, 2012 at 7:58 PM, Len Weincier <len at cloudafrica.net> wrote:
> Hi Ruben
>
> I have the smartos zones booting in opennebula and am trying to understand
> the image persistence model. Smartos likes to keep vm's local to a compute
> node and does not really have a good idea of shared storage. What i would
> like to do is have opennebula remember where the vm was deployed to, ie
> which host has the vm image on it, and then be able to just restart the vm
> on that node, bypassing the deploy / tm step. Is there an elegant way to
> approach this ?
>
> Is it easy to alter the vm lifecycle within core or is that not a good idea
> ?
>
> Thanks
> Len
>
>
> On 06 Nov 2012, at 12:19 PM, "Ruben S. Montero" <rsmontero at opennebula.org>
> wrote:
>
>
> Hi
>
>>
>> Is it possible in one to have that type='xml' be type='json' to generate
>> the machine description as Json rather, or would you recommend that the
>> driver do the translation ?
>
>
> I am afraid not, you have to do the translation outside. Although it could
> be a nice feature to have [1]...
>
> Cheers
> Ruben
>
> [1] http://dev.opennebula.org/issues/1637
>
>>
>>
>> Cheers
>> Len
>>
>> On 05 Nov 2012, at 9:59 PM, "Ruben S. Montero" <rsmontero at opennebula.org>
>> wrote:
>>
>> Hi Len
>>
>> You may take a look to the VMM driver development guide:
>>
>> http://opennebula.org/documentation:rel3.8:devel-vmm
>>
>> Probably the best way to get started is to use the kvm or xen driver as an
>> starting point. You may:
>>
>>
>> 1 Copy the /var/lib/one/remotes/vmm/kvm folder to
>> /var/lib/one/remotes/vmm/smartos and start working from there.
>>
>> 2 Add the driver to the oned.conf file
>>
>> VM_MAD = [
>>     name       = "vmm_smartos",
>>     executable = "one_vmm_exec",
>>     arguments  = "-t 15 -r 0 smartos",
>>     default    = "vmm_exec/vmm_exec_kvm.conf",
>>     type       = "xml" ]
>>
>> 3 Any time you modify the driver you need to copy it to the hosts, so do
>> not forget to execute onehost sync
>>
>> A couple of additional notes:
>>
>> 1 Actions are executed remotely on the target host, if you want to execute
>> them in the front-end use the -l option in configuration. There are examples
>> in oned.conf
>>
>> 2 The xml type will generate a XML file with the domain description as $1
>> for the deploy script. This is the real work for the driver, translate the
>> generic template in something specific to SmartOS
>>
>> 3 Initially you'll need to deploy the vms by hand, use onevm deploy. You
>> need also to get specific information from SmartOS with an Information
>> Driver, that can come as a second step.
>>
>>
>> Please keep us updated with your progress and don't hesitate to ask for
>> help.
>>
>> Cheers
>>
>> Ruben
>>
>>
>>
>> On Mon, Nov 5, 2012 at 5:57 PM, Len Weincier <len at cloudafrica.net> wrote:
>>>
>>> Hi All
>>>
>>> I would like to try my hand at implementing drivers for SmartOS under
>>> opennebula. Does anyone have any pointers to where I could start looking on
>>> how to go about this ?
>>>
>>> Is anyone else looking this so that I dont duplicate efforts ?
>>>
>>> Thanks
>>> Len
>>> _______________________________________________
>>> Users mailing list
>>> Users at lists.opennebula.org
>>> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>>
>>
>>
>>
>> --
>> Ruben S. Montero, PhD
>> Project co-Lead and Chief Architect
>> OpenNebula - The Open Source Solution for Data Center Virtualization
>> www.OpenNebula.org | rsmontero at opennebula.org | @OpenNebula
>>
>>
>
>
>
> --
> Ruben S. Montero, PhD
> Project co-Lead and Chief Architect
> OpenNebula - The Open Source Solution for Data Center Virtualization
> www.OpenNebula.org | rsmontero at opennebula.org | @OpenNebula



-- 
Ruben S. Montero, PhD
Project co-Lead and Chief Architect
OpenNebula - The Open Source Solution for Data Center Virtualization
www.OpenNebula.org | rsmontero at opennebula.org | @OpenNebula