On Tue, Sep 27, 2016 at 10:40:34AM -0600, Chris Friesen wrote: > On 09/27/2016 10:17 AM, Matthew Booth wrote: > > > I think we should be able to create a domain, but once created we should > > never > > redefine a domain. We can do adding and removing devices dynamically using > > libvirt's apis, secure in the knowledge that libvirt will persist this for > > us. > > When we upgrade the host, libvirt can ensure we don't break guests which > > are on > > it. Evacuate should be pretty much the only reason to start again. > > Sounds interesting. How would you handle live migration? > > Currently we regenerate the XML file on the destination from the nova DB. I > guess in your proposal we'd need some way of copying the XML file from the > source to the dest, and then modifying the appropriate segments to adjust > things like CPU/NUMA pinning?
Use the flag VIR_MIGRATE_PERSIST_XML and libvirt will write out the new persistent XML on the target host automatically. Regards, Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://entangle-photo.org -o- http://search.cpan.org/~danberr/ :| __________________________________________________________________________ OpenStack Development Mailing List (not for usage questions) Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
