# qemu-img create -f qcow2 /var/lib/libvirt/images/disk1.img 10G
Formatting '/var/lib/libvirt/images/disk1.img', fmt=qcow2
size=10737418240 encryption=off cluster_size=65536
lazy_refcounts=off
Format specific information:
compat: 1.1
lazy refcounts: false
refcount bits: 16
corrupt: false
This example displays attributes of a qcow2 image:
# qemu-img info /var/lib/libvirt/images/disk1.img
image: /var/lib/libvirt/images/disk1.img
file format: qcow2
virtual size: 10G (10737418240 bytes)
disk size: 136K
cluster_size: 65536
This example increases the size of a qcow2 image:
# qemu-img resize /var/lib/libvirt/images/disk1.img 20G
Image resized.
# qemu-img info /var/lib/libvirt/images/disk1.img
image: /var/lib/libvirt/images/disk1.img
file format: qcow2
virtual size: 20G (21474836480 bytes)
disk size: 140K
cluster_size: 65536
This example creates a RAW image with a maximum size of 10 GB:
# qemu-img create -f raw /var/lib/libvirt/images/disk1.img 10G
Formatting '/var/lib/libvirt/images/disk1.img', fmt=raw
size=10737418240
This example displays attributes of a RAW image:
# qemu-img info /var/lib/libvirt/images/disk1.img
image: /var/lib/libvirt/images/disk1.img
file format: raw
virtual size: 10G (10737418240 bytes)
disk size: 0
This example increases the size of a RAW image:
# qemu-img resize -f raw /var/lib/libvirt/images/disk1.img 20G
Image resized.
# qemu-img info /var/lib/libvirt/images/disk1.img
image: /var/lib/libvirt/images/disk1.img
file format: raw
virtual size: 20G (21474836480 bytes)
disk size: 0