The current guest configuration does not support taking new snapshots

[NE78]

I updated to 8.1.x. I am trying to take a snapshot of this VM that runs Ubuntu Server but i get: "The current guest configuration does not support taking new snapshots"

args: -vnc 0.0.0.0:09
boot: order=scsi0;net0
cores: 4
memory: 16384
meta: creation-qemu=7.0.0,ctime=1663991293
name: Portainer
net0: virtio=52:97:8A:E0:96:B4,bridge=vmbr0
numa: 0
onboot: 1
ostype: l26
scsi0: storage:vm-100-disk-0,size=100G
scsihw: virtio-scsi-pci
smbios1: uuid=5c4749fd-e896-4c72-831b-c223deef04f9
sockets: 1
tags: production
vmgenid: b48af3a5-8795-4791-9132-db6c9afaa812
root@pve:~#

 

[Dunuin]

What type of storage is your storage "storage"? Maybe that storage type just isn't supporting snapshots like an LVM or directory/smb/nfs without qcow?

 

[NE78]

Storage is LVM

 

[milew]

https://pve.proxmox.com/wiki/Storage
Not supported

LVM

lvm

block

no3

no

yes

 

[NE78]

What would have caused that to change? I've always been able to do that? Can I convert without losing data?

 

[Dunuin]

An LVM storage was never supporting snapshots. Maybe you previously used LVM-Thin which supports snapshots?