On 08/20/15 at 05:01pm, melanie witt wrote:
Hi Everyone,
I attended the ops mid cycle summit on Tuesday and Wednesday and here are brief
notes on the feedback I heard related to nova. Please feel free to add your
comments or correct me if I got anything wrong.
Large Deployments Session [1]:
- There's a Neutron spec [2] for adding the capability to model an L3 network
which is composed of L2 networks that are routed together, and this project
will require cooperation from the nova side
- Cells v2 not coming along as quickly as expected. Cells v1 issues around
compat between versions, understood it's not supported but it's been a problem
- Hierarchical multi-tenancy isn't yet supported (quotas)
Upgrades Session Report:
- Good linking of features to documentation is important
- Inter-service changes are important to call out
- Flavor migration is an example of something done well
Other general notes:
- Event capture is a choice between two bad options
- Information divided between events and logs. Have to capture both or you lose
the whole picture
- Hard to trace RPC calls
- Race conditions with scheduling and quotas
- The state of Nova and NUMA is not understood
- Glance v2 is not being used. From what I understand, we can't move to it
because images created by v1 can't be read by v2, for example?
There was a bug around that, though I don't know the details. Another
issue is that v2 doesn't support changes-since which means we can't drop
it behind the Nova API and maintain backwards compatibility.
All of the etherpads from the event are linked here:
https://etherpad.openstack.org/p/PAO-ops-meetup
Thanks,
-melanie (irc: melwitt)
[1] https://etherpad.openstack.org/p/PAO-ops-large-deployments
[2] https://review.openstack.org/#/c/196812/
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