The only question I think I don't have answered is:
* The documentation says that NUMA is required for hot-pluggable CPU and Memory. If your hardware doesn't support NUMA does that mean that you cannot have hot-pluggable CPU and Memory, or should you still enable NUMA to get hot-pluggable CPU...
Ah, you are right, I misunderstood. So if the host has 2 physical CPUs then I should set the VM to NUMA with 2 physical sockets as well, but the vCPUs can be anything I want?
Ah interesting. Does numactl show more than 1 "node" on a 5900x platform then?
I've read the NUMA wiki here: https://pve.proxmox.com/wiki/NUMA and the admin guide regarding NUMA here: https://pve.proxmox.com/pve-docs/pve-admin-guide.html#qm_virtual_machines_settings however I still have some questions.
* Is NUMA only useful if your PVE *host* has more than 1 physical...
Do you have any information on this? I have a debian 12 (bookworm) VM that I enabled hotplug on and after doing so when I boot the VM with less than 1.5GB of memory it runs out of memory (OOM) before it fully boots. I think what you said might be the cause?
This method seems to no longer work with proxmox ve 6.4-13, is there a new method?
EDIT: after many tries it does seem to be working now, i did delete the "boot" line, perhaps that was it?
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