[pve-devel] qemu-server : add new qm import_disk feature

[Alexandre Derumier]

We had discuted last year about a method to import external image (vmware,xen,hyperv) to a proxmox vm
http://pve.proxmox.com/pipermail/pve-devel/2016-January/018757.html

This mostly the feature that all my training students wants each time. (because they don't known how to create target volume manually and qemu-img syntax)

This patches serie add a new method "qm import_disk $vmid $image $targetstorage"