Re: [ovirt-devel] [ovirt-users] Feature: enhanced OVA support
On Tue, May 16, 2017 at 5:56 PM, Adam Litke <alitke(a)redhat.com> wrote:
Great feature! I am glad to see you plan to use the existing
imageio
framework for transferring data.
Yep, and that's the part we need the feedback on the most.
Will you allow export of VMs from a particular snapshot? I guess that's
how you'll have to do it if you want to support export of running VMs.
Exactly, that's how we intend to support exporting VMs with no downtime.
I think you should definitely have a comment in the ovf to indicate that
an OVA was generated by a oVirt. People will try to use this new feature
to import random OVAs from who knows where. I'd also recommend adding a
version to this comment: <!-- Generated by oVirt version 4.1.2 --> or
perhaps even a schema version in case you need to deal with compatibility
issues in the future.
So yeah, there will be some sort of marking - either by a field or a
comment. We'll see about that.
As for the schema version, it already exists in OVFs generated by oVirt
today exactly for that purpose.
I agree with Yaniv Kaul that we should offer to sparsify the VM to
optimize it for export. We should also return compressed data. When
exporting, does it make sense to cache the stored OVA file in some sort of
ephemeral storage (host local is fine, storage domain may be better) in
order to allow the client to resume or restart an interrupted download
without having to start from scratch?
Well, on the one hand it makes sense and I would expect such a mechanism to
be used for image-download as well. On the other hand, we don't support
this concept of pausing ongoing operations or resuming interrupted
opeations on the engine side, so in the context of ova-download (where the
streaming process is comprised of several steps orchestrated by the engine)
supporting this may require too much effort.
On Sun, May 14, 2017 at 9:56 AM, Arik Hadas <ahadas(a)redhat.com> wrote:
> Hi everyone,
>
> We would like to share our plan for extending the currently provided
> support for OVA files with:
> 1. Support for uploading OVA.
> 2. Support for exporting a VM/template as OVA.
> 3. Support for importing OVA that was generated by oVirt (today, we only
> support those that are VMware-compatible).
> 4. Support for downloading OVA.
>
> This can be found on the feature page
>
<http://www.ovirt.org/develop/release-management/features/virt/enhance-imp...
> .
>
> Your feedback and cooperation will be highly appreciated.
>
> Thanks,
> Arik
>
>
> _______________________________________________
> Users mailing list
> Users(a)ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>
>
--
Adam Litke
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