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qcow2 images not shown as dynamic but max size?
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this post was submitted on 30 Nov 2023
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I did not use virt-manager for a while, but probably it allocates the whole virtual disk by default (i don't remember for sure). Try to create it manually and ensure that checkbox "allocate the whole volume" is disabled. You can also do this with
qemu-img createcommand (seeman qemu-imgfor options).Thanks!
BTW it is possible to compress existing qcow2 images. Before that I recommend to run
fstrim -ainside the VM. Then shut it down and executeqemu-img convert -cp old_image.qcow2 new_image.qcow2 && mv -f new_image.qcow2 old_image.qcow2.