fuel-dev team mailing list archive

[Dmitriy Novakovskiy <dnovakovskiy@xxxxxxxxxxxx>]

Thanks guys. We'll have customer test it. Hopefully with no surprises and
lots of joy :)

---
Regards,
Dmitriy


On Thu, Jun 26, 2014 at 12:31 AM, Dmitry Borodaenko <
dborodaenko@xxxxxxxxxxxx> wrote:

> Dmitriy,
>
> As Miroslav has mentioned, images in Glance should be in RAW for
> copy-on-write cloning to be done when a new Cinder volume is created from
> image. You will also come across this limitation (which, unlike other Ceph
> related limitations, isn't yet addressed in our patch series for Nova):
> https://bugs.launchpad.net/nova/+bug/1262914
>
> Regards,
> -DmitryB
>
>
>
> On Wed, Jun 25, 2014 at 8:08 AM, Dmitriy Novakovskiy <
> dnovakovskiy@xxxxxxxxxxxx> wrote:
>
>>  Hi Fuelers,
>>
>> One of my customers is testing Fuel 5.0 w/ Ceph. He's trying to boot a VM
>> from a volume, using qcow2 image as a source for volume creation. What
>> we're seeing (Nikita in CC was helping w/ troubleshooting) is:
>> - image is copied from Glance (which uses Ceph as backend)
>> - image is converted from qcow2 to raw
>> - new RBD volume is created from raw image
>>
>> Looks kinda suboptimal - given both image and boot volume being hosted on
>> Ceph I'd expect copy-on-write cloning to work.
>>
>> Q1) Are there some limitations here, like images stored on Ceph should be
>> in RAW initially?
>> Q2) Would the same (images should be in raw) apply to boot from image
>> scenario, when VM's ephemeral disk is stored on Ceph?
>>
>> Thoughts much appreciated. If necessary I can arrange for someone to take
>> a look at customer's pod
>>
>> ---
>> Regards,
>> Dmitriy
>>
>> --
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>>
>
>
> --
> Dmitry Borodaenko
>