qemu-img

Create and manipulate Quick Emulator Virtual HDD images. More information: https://qemu.readthedocs.io/en/master/tools/qemu-img.html.

• Create disk image with a specific size (in gigabytes):

qemu-img create {{path/to/image_file.img}} {{gigabytes}}G

• Show information about a disk image:

qemu-img info {{path/to/image_file.img}}

• Increase or decrease image size:

qemu-img resize {{path/to/image_file.img}} {{gigabytes}}G

• Dump the allocation state of every sector of the specified disk image:

qemu-img map {{path/to/image_file.img}}

• Convert a VMware .vmdk disk image to a KVM .qcow2 disk image:

qemu-img convert -f vmdk -O qcow2 {{path/to/image_file.vmdk}} {{path/to/image_file.qcow2}}

• [c]reate an internal snapshot of a KVM .qcow2 disk image:

qemu-img snapshot -c {{snapshot_tag_name}} {{path/to/image_file.qcow2}}

• [a]pply an internal snapshot to a KVM .qcow2 disk image:

qemu-img snapshot -a {{snapshot_tag_name}} {{path/to/image_file.qcow2}}