On Mon, Jan 28, 2013 at 02:29:23PM +0100, Paolo Bonzini wrote: > Il 28/01/2013 14:11, Michael S. Tsirkin ha scritto: > > > I asked for a standalone device because the configuration mechanism > > > (configfs vs. command-line) and the feature set are completely > > > different. Unlike virtio-net, it's not possible to switch one to the > > > other at run time. > > > > Exactly the same applies to any other frontend option. > > For example if you have two qemu instances with > > different num_queues values you can not migrate one > > to the other. > > So in this sense it is not different from any other > > frontend option, right? > > Indeed, in this sense it is not. > > Actually in this case migrating one to the other could succeed, and make > all disks disappear on the destination (because of the different > configuration mechanism). That however could be overcome with vhost=on > registering a migration blocker. Or better add a subsection if vhost is set: vhost=on to vhost=on can migrate, right? > I won't really block the patch with the vhost=on/off frontend option if > it is properly done (e.g. the QEMU SCSI bus should not be created for > vhost=on) and minimally invasive to the non-vhost code. > > Paolo _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
