I am on Fedora with KDE (Kinoite) and use virt-manager.

I like to test a lot of stuff, but the VMs are not big. As they are dynamically allocated, I create them with 50GB or something.

But it seems that virt-manager and also KDE Dolphin see these qcow2 images as being full size, so I currently have only 20GB of “space left”.

Do you know anything about this?

  • bizdelnick
    1·
    7 months ago

    BTW it is possible to compress existing qcow2 images. Before that I recommend to run fstrim -a inside the VM. Then shut it down and execute qemu-img convert -cp old_image.qcow2 new_image.qcow2 && mv -f new_image.qcow2 old_image.qcow2.