Proxmox/KVM images conversions

PVE-KVM_img-conv.txt

# qcow2 -> qcow2compress
qemu-img convert -O qcow2 -c vm-103-disk-0.qcow2 vm-103-disk-0-comp.qcow2

# lvm-thin -> qcow2 
qemu-img convert -O qcow2 /dev/lvm-thin/vm-103-disk-1 vm-103-disk-1.qcow2

# lvm-thin -> qcow2compress oneline
qemu-img convert -O qcow2 -c $(pvesm path lvm-thin:vm-103-disk-1) vm-103-disk-1.qcow2

# qcow2 -> raw
qemu-img convert -f qcow2 -O raw vm-103-disk-0.qcow2 vm-103-disk-0.raw

# raw -> ceph RBD storage
rbd --image-format 2 import vm-103-disk-0.raw cephrbd/vm-103-disk-0

# raw/qcow2 -> local-lvm storage
qm importdisk 201 vm-201-disk-0.raw local-lvm

# ceph RBD -> raw
rbd export cephrbd/vm-100-disk-0 /tmp/vm-100-disk-0.raw

# raw -> local-lvm
qm importdisk 100 /tmp/vm-100-disk-0.raw local-lvm