On Mon, May 04, 2015 at 09=34=21PM +0300, Fahri Cihan Demirci wrote: > Hello Alexandre, > > Thank you for your response. I came upon that patch on the Libvirt mailing > list, too. However, the following comment makes me think that it's not likely > to be merged: > > https://www.redhat.com/archives/libvir-list/2015-February/msg00415.html > > Also, later in the thread, the author of the patch seems to confirm that the > plan for hotplug in QEMU is not compatible with that patch: > > https://www.redhat.com/archives/libvir-list/2015-March/msg01169.html > > So, I think Libvirt developers have decided to wait until there is a > generalized groundwork for VCPU hot-unplug in the QEMU code base. That's why > I decided to inquire and offer help for QEMU developers, since the ball seems > to be in their court now.
We're very interested in having this feature upstream as well. As Fahri stated above, I also would like to offer help to get it pushed. What's the current status? Regards, > > Thanks a lot for your time. > > > On Mon, May 04, 2015 at 07:49:08PM +0200, Alexandre DERUMIER wrote: > > Hi, > > > > they are a lot of patches sent on the mailing list recently, > > > > cpu hotplug|unplug with device_add|del > > > > https://www.redhat.com/archives/libvir-list/2015-February/msg00084.html > > > > > > > > ----- Mail original ----- > > De: "Fahri Cihan Demirci" <cih...@skyatlas.com> > > À: "qemu-devel" <qemu-devel@nongnu.org> > > Envoyé: Lundi 4 Mai 2015 18:24:43 > > Objet: [Qemu-devel] VCPU Hot-Unplug Feature > > > > Hello, > > > > We are interested in being able to remove a VCPU from an active Libvirt > > domain running under QEMU/KVM. However, currently that does not seem to be > > possible because QEMU does not provide an interface for hot-unplugging a > > VCPU. The corresponding feature page [1] on the QEMU wiki mentions the > > cpu-add interface and the generalized device add/del interface. So, my > > question is, is there someone working on a cpu-remove interface or making > > progress in the generalized device add/del interface to hot-unplug VCPUS? > > If you are in any way interested in or planning such a feature, we may > > provide feedback, testing or help in the development effort. Any other > > input, guidance or corrections would be also most welcome. Thank you. > > > > [1] http://wiki.qemu.org/Features/CPUHotplug > > > > > > Best regards, > > Fahri Cihan Demirci > -- Eduardo Otubo ProfitBricks GmbH
signature.asc
Description: Digital signature
