qemu-img

Create disk image

$ qemu-img create -f [qcow2] [disk.qcow2] [20G]

$ qemu-img convert -f [raw] -O [qcow2] [input.img] [output.qcow2]

$ qemu-img info [disk.qcow2]

$ qemu-img resize [disk.qcow2] +[10G]

$ qemu-img snapshot -c [snapshot1] [disk.qcow2]

qemu-img command [options]

qemu-img is the QEMU disk image utility for creating, converting, resizing, and inspecting virtual machine disk images. It supports multiple formats including qcow2, raw, vmdk, vdi, and vhd, making it essential for managing virtual machine storage and migrating between hypervisors.
The create command builds new images with optional thin provisioning, while convert transforms between formats and can compress or encrypt output. The info command displays image metadata including format, virtual size, and snapshot details. Snapshots within qcow2 images can be created and managed for point-in-time recovery.

create

Create new image.

Convert format.

Show image info.

Resize image.

Manage snapshots.

Image format.

Output format.

Part of QEMU suite. Various format options.

qemu-img is part of QEMU for disk image management.

qemu(1), virt-sparsify(1)