[pve-devel] qemu memory hotplug limited to 64 dimm

[Alexandre DERUMIER]

Hi, 

a proxmox user has reported problem to hotplug memory with high values (48G)

https://forum.proxmox.com/threads/apt-get-upgrade-to-update-proxmox-server.30992/


Seem that qemu check about a vhost value

https://lists.nongnu.org/archive/html/qemu-devel/2015-07/msg05998.html

cat /sys/module/vhost/parameters/max_mem_regions > 64  (verified on my servers).


I think this limit was not present when we have implemented hotplug. 

Not sure was we can do, but I think our method don't scale anymore :(

Maybe should we introduce a new fixed "dimm size" option, to allow hotplug of more memory ?