os-vif/releasenotes/notes/vhost-user-reconnect-fa4cbb731b787f71.yaml
Sean Mooney e2fa516b91 add support for vhost-user reconnect
- This change introduces support for createing
  dpdkvhostuserclient type port in ovs.
- This change allows vhost-user to be configured with
  qemu as the vhost server and ovs as the client allowing
  the vhost frontend to reconnect to the backend in
  the event the backend restarts.

Change-Id: Ie22e12c9578a2f5bd89a37b9e80efef7ae055b7a
2016-12-13 03:40:43 +00:00

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YAML

---
features:
- vhost-user reconnect is a new feature of qemu that
allows a vhost-user frontend(e.g. qemu) to reconnect
to a vhost-user backend (e.g. ovs with dpdk) in the event
that backend is restarted while the interface is in use.
vhost-user reconnect leverages qemu vhost-user server mode
with ovs-dpdk in client mode. This configuration requires
ovs 2.6 with dpdk 16.07 and qemu 2.7 or newer to function.
When qemu server mode is used with older qemu versions such
as 2.5, vhost-user will still function with ovs 2.6 and
dpdk 16.07, however, reconnect functionality will not be
available.