I ran into the same problem. I found that calling virt-clone with --preserve-data before calling qemu-img works.
virt-clone succeeds since there is not yet a file there, and then you can put the storage into place after the fact.
I ran into the same problem. I found that calling virt-clone with --preserve-data before calling qemu-img works.
virt-clone succeeds since there is not yet a file there, and then you can put the storage into place after the fact.