Memory and CPU hotplug
Administering Proxmox VE for ~5y at k-space.ee, I've heard many are
moving from VMWare to PVE. On our side, Ubuntu annoyed many users with
Snaps, Pro, etc. We started using Debian for the default/standard image,
genericcloud with cloud-init.
The guests have CPU and memory hotplug enabled. PVE's documentation¹,
based on Ubuntu, is misleading — current Debian 12 images need to be
patched to the instructions of 'Kernel older than 4.7'.
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This means Debian VMs, by default, get stuck on 1G (first DIMM) of RAM².
Regardless of the current docs, Would it make sense to support the
virtualization features by default in the image?
-jc
¹
https://pve.proxmox.com/wiki/Hotplug_(qemu_disk,nic,cpu,memory)#CPU_and_Memory_Hotplug
² PVE shows offline memory as available in its tooling. I missed it in
testing the default image, and monitoring. Linux runs just fine with 1G.
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