I don't recall the exact semantics, but I believe Ceph's NBD implementation is usually renamed RBD in the Ceph documentation, so you may be able to setup a "remote block device" and access that directly from selfimage to store the image directly into Ceph.

On 04/02/2015 02:09 PM, Stephen Partington wrote:
> So as part of a project here i have been experimenting with Proxmox and
> Ceph. It up and running and works really well. Bur we have a few MUST HAVE
> vm's i need to bring over.
> 
> So far i have not found a graceful way to do this in this configuration.
> 
> The most graceful so far appears to be a combination of Selfimage (dd for
> windows) to clone the drive via NBD directly into the proxmox server. but
> using Ceph this is more challenging as i do not have a "normal" path for
> access to write the disk image, NBD or no.
> 
> If there are some suggestions on how to process this i would be open to
> hearing them. so far it is looking like a cross of selfimage to local disk
> then migrating into the ceph cluster... It would almost be easier to
> rebuild vm's that way.
> 
> 
> 
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