nova/automatic-live-migration-completion-post-copy-a7a3a986961c93d8.yaml at c2241b6231a7fe33b13e9ffd1c0847092fa0d942 - nova - OpenDev: Free Software Needs Free Tools

openstack/nova

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Luis Tomas 3d83c462bc Add new configuration option to turn postcopy on/off

Since QEMU 2.5 and Libvirt 1.3.3 it is possible to use postcopy
live migration to ensure an upper limit in the amount of memory
to be transferred duing the live migration process. This option
enables to live migrate instances with memory-intensive workloads
by driving the migration process by the destination host, i.e.,
after the switch to postcopy mode, the destination VM is the active
one and therefore any dirty pages are directly generated at the
destination hosts.

Partially-implements: blueprint auto-live-migration-completion

Change-Id: I35b8400604eece5ddfba3e35015bcd3500d9f605
Signed-off-by: Luis Tomas <luis5tb@gmail.com>
Co-Authored-By: Pawel Koniszewski <pawel.koniszewski@intel.com>

2016-06-28 09:53:48 +00:00

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YAML

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 ---
 features:
   - New configuration option live_migration_permit_post_copy
     has been added to start live migrations in a way that allows
     nova to switch an on-going live migration to post-copy mode.
     Requires libvirt>=1.3.3 and QEMU>=2.5.0.