C.1.4 Creating qcow2 Images for the Virtual Disks of the Old Product (V1.0.x) (For KVM)

Appendix C Upgrading from an Old Product > C.1 Procedure to Upgrade from the Old Product > C.1.4 Creating qcow2 Images for the Virtual Disks of the Old Product (V1.0.x) (For KVM)

Create qcow2 images that use the virtual disk files of the old product as the base image so you can roll back to the old environment after you abort the update.

Use the "qemu-img" command to create qcow2 images of the two virtual disk files (system area and cache area).
[Example]

# cd /var/lib/libvirt/images
# qemu-img create -f qcow2 -b CSG_v100_kvm.qcow2 CSG_v100_kvm_tmp.qcow2	<-System Area
# qemu-img create -f qcow2 -b CSG_v100_cache.raw CSG_v110_cache.qcow2	<-Cache area