I'm running 24.04 ext4 in a Virt Manager VM. Host is Tumbleweed. How to resize my 24.04 VM?

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Ubuntu Version: 24.04 VM ext4. (Virt Manager, Tumbleweed is Host)

Desktop Environment (if applicable): GNOME

Problem Description: I have 14GB of free space on the VM. I tried to run Timeshift but it gave a bunch of errors (it was a few weeks ago and I don’t remember the error details). How can I expand the size of my VM? I want to add 16GB to the virtual partition.

Can I do the expansion within the VM? Or do I also have to run some commands in the Host?

(PS: I’m used to the old forum. Is this the right forum to post this question? Just want to make sure I’m posting to the right place for this question.)

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You use commands in the host system to expand the size of a VM disk.
As your host is Tumbleweed (rpm), I would suggest that you find the exact commands via the relevant forum.
In the meantime, here is some info if you were to use:-

  • Ubuntu host
  • qemu/kvm
  • qcow2 disk image

Increase-kvm-vm-disk

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I had a similar issue in Virtualbox with Ubuntu as guest and Tumbleweed as host.

Enlarging the disk size with Virtualbox was easy, then I inserted a gparted ISO, started from that one and enlarged the size of the partition within the guest. This works very well.