[Engine-devel] restapi - removing template from a specified storage-domain

[Itamar Heim]

On 01/01/2012 05:59 PM, Omer Frenkel wrote:
>
>
> ----- Original Message -----
>> From: "Ori Liel"<oliel at redhat.com>
>> To: engine-devel at ovirt.org
>> Sent: Sunday, January 1, 2012 3:15:18 PM
>> Subject: [Engine-devel] restapi - removing template from a specified	storage-domain
>>
>> I'm about to implement removing template from a specified
>> storage-domain.
>>
>> A template is meta-data + disks. The meta-data is in the ovirt-engine
>> database, the disks are (potentially) scattered across several
>> storage-domains. Removing a template from a specified storage domain
>> means removing that template's disks from that storage-domain.
>> API-wise, it's better to enable the deletion at the single-disk
>> level, otherwise rollback and all sorts of unnecessary complexities
>> enter the picture. So what I would like to go forward with is the
>> following API:
>>
>> DELETE /api/templates/{template_xxx}/disks/{disk_yyy}
>>
>>     <storage_domain id="domain_zzz"/>
>>
>> This means: "delete the disk 'disk_yyy' (which belongs to template
>> 'template_xxx' from the storage-domain 'domain_zzz'.
>>
>> Any comments?
>
> just that CURRENT backend only allows removing per storage domain(s),
> this functionallity is in plan, though (if that was what you meant..)

I think the implementation for this can/should wait for the new support 
in the backend if makes more sense api-wise, rather than implementing 
based on the current limitations and later changing the api.
the question is with the move to multiple storage domains, will an 
atomic[1] verb to delete all disks from a specific storage domain (per 
vm/template) will be provided, or only per disk.

[1] well, delete is rollforward, so not sure i understand Ori's point 
about rollback. OTOH, the API should probably behave the same for 
move/copy of disks, etc.