[openstack-dev] [nova][glance][stable] Stable exception for bug #1447215: Allow ramdisk/kernel_id to be None

Matt Riedemann mriedem at linux.vnet.ibm.com
Tue Jul 28 17:39:06 UTC 2015

On 7/28/2015 9:24 AM, Kuvaja, Erno wrote:
>> -----Original Message-----
>> From: Flavio Percoco [mailto:flavio at redhat.com]
>> Sent: Tuesday, July 28, 2015 3:15 PM
>> To: openstack-dev at lists.openstack.org
>> Subject: [openstack-dev] [nova][glance][stable] Stable exception for bug
>> #1447215: Allow ramdisk/kernel_id to be None
>> Greetings,
>> We recently found a bug in the Nova-Glance interaction that prevents
>> booting snapshots using Glance's V2 API. The bug is that Nova creates the
>> snapshot and sets the ramdisk_id/kernel_id to None when it's not available.
>> While this was ok in V1, it causes a failure for V2 since the current schema-
>> properties file doesn't allow both fields to be None. The right fix would be for
>> Nova not to set these fields at all if no value is found.
>> Nonetheless, we have a workaround that would make this work. The
>> workaround landed in master and it's been proposed for kilo.
>> Therefore, I'm asking for a stable exception to merge this patch, which is
>> backwards compatible (unless I'm missing something). The exception is being
>> requested because it does change the API.
> +1
> In my understanding as well we would be backwards compatible and this would make the future upgrades so much easier in the case nova starts consuming v2 Image API.
> - Erno
>> The change proposed is to allow these fields to be None.
>> The review: https://review.openstack.org/#/c/205432/
>> Cheers,
>> Flavio
>> --
>> @flaper87
>> Flavio Percoco
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Nova doesn't support glance v2 in kilo or liberty, so does it matter to 
nova if this is in stable/kilo or not?  Doesn't seem like it.  This is a 
barrier to getting glance v2 support into nova in mitaka though it seems.



Matt Riedemann

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