>>what happens when you migrate auch VM to a host with different NUMA 
>>architecture? 

If the host have less numa nodes than vmsocket, the qemu process don't start.
(I have a check for this in my patch)

AFAIK, this is the only restriction.

Some good informations about numa here:
http://www.linux-kvm.org/wiki/images/7/75/01x07b-NumaAutobalancing.pdf




----- Mail original ----- 

De: "Dietmar Maurer" <diet...@proxmox.com> 
À: "Alexandre DERUMIER" <aderum...@odiso.com>, pve-devel@pve.proxmox.com 
Envoyé: Mardi 2 Décembre 2014 14:20:08 
Objet: RE: [pve-devel] [PATCH] add numa options 

> numa: [policy=<default|preferred|bind|interleave>] 
> 
> then generate the numa nodes, from the sockets number with same policy and 
> split the memory across the nodes 

what happens when you migrate auch VM to a host with different NUMA 
architecture? 
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