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Re: [libvirt] Google Summer of Code 2013 ideas wiki open



On Mon, Apr 15, 2013 at 4:43 AM, harryxiyou <harryxiyou gmail com> wrote:
> On Fri, Apr 12, 2013 at 11:29 PM, Stefan Hajnoczi <stefanha gmail com> wrote:
>> On Fri, Apr 12, 2013 at 10:58 AM, Daniel P. Berrange
>> <berrange redhat com> wrote:
>>> On Fri, Apr 12, 2013 at 08:34:18AM +0200, Michal Privoznik wrote:
>>>> On 10.04.2013 15:13, harryxiyou wrote:
>>>> >
>>>> > Hi all,
>>>> >
>>>> > I've also got some ideas like following for GSOC 2013.
>>>> >
>>>> > Storage driver jobs.
>>>> >
>>>> > Currently, there is no Libvirt storage API to rename storage volume,
>>>> > storage pool, snapshot, etc. There is also no Libvirt API to move
>>>> > volume from one pool to another using libvirt API. Possibly those
>>>> > pools could have different backend (lvm, dir, ...). So i wanna finish
>>>> > these jobs for Libvirt during GSOC 2013. See following in details.
>>>> >
>>>> >
>>>> > 1, Rename storage volume. I will develop ' virsh vol-rename xxx'
>>>> > option for virsh tool.
>>>> >
>>>> > 2, Rename storage pool. I will develop 'virsh pool-rename xxx'
>>>> > option for virsh tool.
>>>> >
>>>> > 3, Rename snapshot. I will develop 'virsh snapshot-rename xxx'
>>>> > option for virsh tool.
>>>>
>>>> I am not sure we want *rename virsh commands. Not only for storage, but
>>>> in general. And even if we do want these, they don't require a new API.
>>>> They can be implemented with simple vir*GetXML(); vir*Define();
>>>> vir*Undefine();
>>>
>>> Actually I disagree - I think you want explicit APIs for renames, so that
>>> it can be done atomically / with minimal risk of failure halfway.
>>>
>>>> >
>>>> > 4, Move volume from one pool to another. I will develop 'virsh vol-move xxx'
>>>> > option for virsh tool.
>>>>
>>>> This one makes more sense, however I am worried about difficulty a bit.
>>>> A GSoC project should take 3 months for a student to complete. This is
>>>> something that even unexperienced user can accomplish in less than a month.
>>>
>>> Isn't all the libvirt functionality for this already existing? it it
>>> is basically just  virStorageVolCreateFrom(...original vol) and then
>>> delete the original volume.
>>
>> Michal said earlier that virsh vol-move seemed too small a task.
>>
>> Do you think that these 4 tasks together merit a 12-week project?
>>
>
> Let me give a summary about my ideas for Libvirt of GSOC 2013.
>
> Libvirt storage jobs.
>
> This project includes renaming storage volume(storage pool, snapshot,etc),
> moving volume from one pool to another, the capability support for storage
> driver (like virsh capabilities for the hypervisor drivers, e.g. what pool types
> it supports, what volume types each pool type supports, even may what
> operations/APIs the pool type support, ...etc).

Thanks for posting a short summary.

Can an active libvirt developer please confirm that this project idea
has a reasonable scope for 12 weeks and that they are willing to
mentor this project idea?

Thanks,
Stefan


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