Hi,
If I recall correctly your Horizon-based solution won't be possible, because of
how Nova's code works internally - it just passes Nova's AZ to Cinder API,
without allowing to overwrite it.
We're discussing this particular issue in another ML thread
http://lists.openstack.org/pipermail/openstack-dev/2015-August/071732.html. I'm
planning to create a BP and spec to sort out all Cinder AZ issues in Mitaka.
Apart from that there's a bugreport[1] and patch[2] aiming in temporarily
fixing it for Liberty cycle.
[1] https://bugs.launchpad.net/cinder/+bug/1489575
[2] https://review.openstack.org/#/c/217857/
-Original Message-
From: Timur Nurlygayanov [mailto:tnurlygaya...@mirantis.com]
Sent: Monday, August 17, 2015 2:19 PM
To: OpenStack Development Mailing List
Subject: [openstack-dev] [Horizon] [Nova] [Cinder] Need to add selection of
availability zone for new volume
Hi OpenStack dev team,
we found issue [1] in Horizon (probably, in Nova API too), which blocks the
ability to boot VMs with option Instance Boot Source = Boot from image
(creates new volume) in case when we have several Availability Zones in
Nova and Cinder - it will fail with error Failure prepping block device.
Looks like it is issue in the initial design of Boot from image (creates new
volume) feature, because when we creates new volume we need to
choose the Availability zone for this volume or use some default value (with
depends on AZs configuration). In the same time Nova AZs and Cinder AZs
are different Availability Zones and we need to manage them separately.
For now, when we are using Boot from image (creates new volume)
feature, Nova tries to create volume is selected Nova Availability Zone, which
can be not presented in Cinder. In the result we will see error Failure
prepping block device.
I think Horizon UI should provide something like drop down list with the list
of Cinder availability zones when user wants to boot VM with option Boot
from image (creates new volume) - we can prepare the fix for the existing
Horizon UI (to support many AZs for Nova Cinder use case in Kilo and
Liberty releases).
Also, I know that Horizon team works on the new UI for Instance creation
workflow, so, we need to make sure that it will be supported with new UI
[2].
Thank you!
[1] https://bugs.launchpad.net/horizon/+bug/1485578
[2] https://openstack.invisionapp.com/d/#/projects/2472307
--
Timur,
Senior QA Engineer
OpenStack Projects
Mirantis Inc
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