[openstack-dev] State of NUMA live migration

Artom Lifshitz alifshit at redhat.com
Wed Oct 3 16:31:06 UTC 2018

Yes, this is still happening. Mea culpa for not carrying the ball and
maintaining visibility. There's work in nova to actually get it
working, and in intel-nfv-ci to lay down the groundwork for eventual

In nova, the spec has been re-proposed for Stein [1]. There are some
differences from the Rocky version, but based on what I've heard was
discussed at Denver, it shouldn't be too controversial. There's a
couple of nova patches up as well [2], but that's still pretty WIP
given the changes in the spec. A bunch of patches from Rocky were
abandoned because they're no longer applicable.

In intel-nfv-ci, there's a whole stack of changes [3] that are mostly
about technical debt and laying the groundwork to support multinode
test environments, but there's also a WIP patch in there [4] that'll
eventually actually test live migration.

For now we have no upstream/public environment to run that on, so
anyone who's involved will need their own env if they want to run the
tests and/or play with the feature. Longer-term, I would like to have
some form of upstream CI testing this, be it in the vanilla nodepool
with nested virt and "fake" NUMA topologies, or a 3rd party CI with
resources provided by an interested stakeholder.

[1] https://review.openstack.org/#/c/599587/
[2] https://review.openstack.org/#/q/status:open+project:openstack/nova+branch:master+topic:bp/numa-aware-live-migration
[3] https://review.openstack.org/#/c/576602/
[4] https://review.openstack.org/#/c/574871/6

More information about the OpenStack-dev mailing list