Resizing disk size went wrong

[sdmeijer]

I wanted to increase my virtio-disk with 150G (it was 500G) through the web interface.
I typed 150 as increase size, but after pressing Enter the filesize now states 1800G! (The physical disk isn't that large.)

I didn't do anything inside the VM after this. So the only change at this moment is in Proxmox.

How can I restore this? Can I just alter the .conf file and change the size to 650G or should I do anything else?
I hope someone can help me.

 

[fiona]

Hi,
just changing the configuration file won't affect the real or provisioned size of the image. Because you said that the physical disk isn't that large, I assume that the disk is thinly provisioned, so there's no need to hurry, i.e. the volume group/filesystem on your host is not filled up because of it.

What is the underlying storage? If it is LVM, use lvresize. If it is a directory-based storage, use qemu-img resize. If it is your first time using these tools, I'd strongly suggest trying things out on a test image first. What you really need to be careful about is to not make the image smaller than the current filesystem on it expects. I assume you haven't changed that yet and it still expects 150G?

After doing the resize, use qm rescan --vmid <ID> with the ID of your virtual machine to update the configuration file.

EDIT: Could you also share the output of pveversion -v?