On Wed, Dec 23, 2015 at 05:14:16PM +0100, Andrea Bolognani wrote:
Hi all,
libvirt currently doesn't allow you to configure a guest with something like
<cpu> <topology sockets='2' cores='5' threads='8'/> <numa> <cell id='0' cpus='0-39' memory='1048576' unit='KiB'/> <cell id='16' cpus='40-79' memory='1048576' unit='KiB'/> </numa> </cpu>
with the following error:
XML error: Exactly one 'cell' element per guest NUMA cell allowed, non-contiguous ranges or ranges not starting from 0 are not allowed
The error message is very specific about not allowing gaps in NUMA cell numbering; however, on the very same host, I have
$ numactl --hard | head -1 available: 4 nodes (0-1,16-17)
so gaps in numbering are definitely possible, at least on ppc64.
Well that says Linux supports gaps, but does QEMU actually allow us to specify gaps ? Regards, Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|