On 04/04/2014 10:28 AM, Dr. David Alan Gilbert wrote: > One thing to be a little careful about if we merge these tunables > together, is what tunables are allowed to be changed while the migration > is running. The 'capabilities' are currently fixed once the migration > starts, but I know at least some of the tuneables people want to change > while things are going - and some care is needed with it since (as we > found with the xbzrle cache size) we get fun due to the use being in > a different thread.
Possible to solve that by adding an annotation in extended query output of which tunables are live, and by making the set command reject any changes for a tunable that is not live if migration is already underway. But yes, worth thinking about. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
signature.asc
Description: OpenPGP digital signature
