I was trying to create a raw image with this command:
qemu-img create -f raw -o size=200G,preallocation=metadata file.img
but seem that it raw images doesn't support preallocation. if so why there is raw + preallocation in this chart?
# qemu-img create -f raw -o size=200G,preallocation=full file.img Unknown option 'preallocation' Invalid options for file format 'raw'.