TLTR: When you have an AMD Ryzen CPU and want to use any nested virtualization (nonfancy, just packer builds with Virtualbox) it will freeze about 5-10 seconds after starting the VM. To fix this issue, you need to upgrade your PVE kernel to 5.11.
My setup:
- Proxmox 6 latest patch version pve-manager/6.4-4/337d6701
- CPU AMD Ryzen 9 5950X 16-Core Processor
- NVMe drives / raid (if that can make any difference to this setup)
What i do:
Runing a Debian-buster VM with host type CPU, enabled nested virtualization (https://pve.proxmox.com/wiki/Nested_Virtualization).
Inside that VM I run packer based builds, more specifically
Issue:
The nested VM started by VirtualBox will randomly freeze in about 10 seconds after booting the VM prior to any installation.
Solution:
Upgrade your PVE kernel to 5.11 using
Hint: be aware, if you virtualize FreeBSD boxes, there is an issue when using cpu: host
My setup:
- Proxmox 6 latest patch version pve-manager/6.4-4/337d6701
- CPU AMD Ryzen 9 5950X 16-Core Processor
- NVMe drives / raid (if that can make any difference to this setup)
What i do:
Runing a Debian-buster VM with host type CPU, enabled nested virtualization (https://pve.proxmox.com/wiki/Nested_Virtualization).
Inside that VM I run packer based builds, more specifically
- virtualbox 6.1 (latest)
- packer 1.7.2 (latest)
Issue:
The nested VM started by VirtualBox will randomly freeze in about 10 seconds after booting the VM prior to any installation.
Solution:
Upgrade your PVE kernel to 5.11 using
Code:
apt-get install pve-kernel-5.11Hint: be aware, if you virtualize FreeBSD boxes, there is an issue when using cpu: host
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