Kernel crashes after disk expansion

[Yxnt]

Is your feature request related to a problem? Please describe.

This problem is the community to provide the image of the problem, when the creation of the VM immediately after the expansion of the disk and then boot the kernel crash will occur, the reason for it is that the virtual machine did not add the serial0 device, when you add the device can be used normally!

Describe the solution you'd like
I would like to add a serial device by automatically executing the command qm set <VMID> -serial0 socket after creating the vm, which would solve the issue

Additional context
https://bugs.launchpad.net/ubuntu/+source/cloud-initramfs-tools/+bug/1123220
https://forum.proxmox.com/threads/kernel-panic-after-resizing-a-clone.93738/post-476353

[Yxnt]

emm, add serial_device {} to vm section can resolve this problem.

close this issue.

[bpg]

I believe this issue is specific to Ubuntu, so I don’t think it makes sense to add code to handle distro-specific edge cases.

However, documenting it is a good idea since quite a few people have run into this before.