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Re: Creating boot-from-volume capable image and volume


Hi Anthony,

Thanks for following it up.

On Sat, Feb 11, 2012 at 2:58 PM, Anthony Young
<sleepsonthefloor@xxxxxxxxx> wrote:
> On Fri, Feb 10, 2012 at 8:51 PM, Tomoe Sugihara <tomoe@xxxxxxxxxxxx> wrote:
>> Hi folks,
>> Could someone tell me what is the right way to do boot-from-volume?
>> Especially, how to create boot-from-volume capable image and volume?
>> My understanding is that, since openstack API requires imageRef, we
>> need to pass in both image and volume ids.
> I was actually playing with this today, and just put up a review that adds a
> devstack exercise to create and launch a bootable volume.  It is true that
> --image is still required when booting from a volume - I have not
> investigated yet if that is a bug or a consequence of how boot-from-volume
> is implemented as an extension (which still may fall into the bug category).
> https://review.openstack.org/4044

Current servers API, which boot-from-volume inherits from, throws an
exception when imageRef is missing:

>> I thought that create_image in EC2 API would be the one and tried, but
>> it's totally broken now:
>> https://bugs.launchpad.net/nova/+bug/923546
>> And, I didn't find equivalent code in OpenStack API.
>> I'd appreciate any help on this and I'd be happy to help debug the issue.
> Hopefully the code above will give you some direction to get started.  My
> experience thus far is that the end-to-end experience of using this feature
> needs some work, so I'll probably file some bugs and patches while I muck
> with it.  So it would be great if you took a look and did the same:)

That helps me understand the end-to-end workflow a lot :)
In your script, you log in to a guest and copy a bootable image by cp
command to a volume, but I'm wondering if there's a way to create
bootable volume using only APIs. Otherwise it's a bit hard to manage
from operator's or dashboard's point of view.

I'll run your script next week and see how it goes. Thanks a lot!


> Anthony
>> Cheers,
>> Tomoe
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