Shrink a disk with qemu-img parsing error

[check-ict]

Hello,

I want to shrink my 200GB qcow disk to 32GB. I allready partitioned the disk with only 10GB of space, so now I just need to shrink the disk.

When I use:
qemu-img resize vm-102-disk-1.qcow2 +100G

100GB is added to the disk.

Now I use:
qemu-img resize vm-102-disk-1.qcow2 -100G

And I get this error: resize: invalid option -- 1

It cannot parse the command becuase of the "-". On the internet I found that the command "-- -100G" should work, but nogo:
proxmox02:/var/lib/vz/images/102# qemu-img resize vm-102-disk-1.qcow2 -- -100G
qemu-img: This image format does not support resize

Any ideas?

Nomad

 

[dietmar]

I guess you can only shrink raw files (you need to convert to raw first).

 

[check-ict]

Thanks!
proxmox02:/mnt/data2/images/101# qemu-img resize vm-101-disk-1.raw -- -1G
Image resized.