Il 08/07/2013 21:02, Eric Blake ha scritto: > On 07/05/2013 12:41 PM, Eduardo Habkost wrote: >> On Thu, Jul 04, 2013 at 05:53:08PM +0800, Wanlong Gao wrote: >>> From: Bandan Das <b...@redhat.com> >>> >>> This allows us to use the "cpus" property multiple times >>> to specify multiple cpu (ranges) to the -numa option : >>> >>> -numa node,cpus=1,cpus=2,cpus=4 >>> or >>> -numa node,cpus=1-3,cpus=5 >>> >>> Note that after this patch, the defalut suffix of "-numa node,mem=N" >>> will no longer be "M". So we must add the suffix "M" like "-numa >>> node,mem=NM" >>> when assigning "N MB" of node memory size. >> >> Such an incompatible change is not acceptable, as it would break >> existing configurations. libvirt doesn't specify any suffix and expects >> it to always mean "MB". > > Newer libvirt can be taught to append 'M' when it detects it is talking > to newer qemu. While you have a point that it is annoying to force > users to upgrade to a newer libvirt merely because they upgraded qemu, > the libvirt point of view is that the following are supported: > > old libvirt -> old qemu > new libvirt -> old qemu > new libvirt -> new qemu > > but that this combination is always best effort and not required to work: > > old libvirt -> new qemu
I don't think this is the case, unless you're talking of *very* old libvirt (e.g. pre-QMP). Paolo
