[libvirt-users] RBD snapshots

Dear libvirt users, I'm stuck on this subject and would appreciate a working example as this looks a supported feature :) After many tries and packages backports, here is my current setup: qemu 2.5 libvirt 3.0 ceph hammer on Debian jessie. Here is the relevent domain xml parts: <disk type='network' device='disk' snapshot='internal'> <driver name='qemu' type='raw'/> <auth username='libvirt'> <secret type='ceph' uuid='xxxxxxxxxxxxxxxx'/> </auth> <source protocol='rbd' name='libvirt-pool/vm-test'> <host name='192.168.253.1' port='6789'/> <host name='192.168.253.3' port='6789'/> <host name='192.168.253.254' port='6789'/> <snapshot name='backup'/> </source> <backingStore/> <target dev='vda' bus='virtio'/> <alias name='virtio-disk0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/> </disk> After several tries, I discovered the snapshot option in source tag, and that I need to pre-create this snapshot using rbd so the vm can start. But then I tried: # virsh snapshot-create-as vm-test error: unsupported configuration: internal snapshot for disk vda unsupported for storage type raw # virsh snapshot-create-as vm-test snap1 --memspec file=/tmp/vm-test.mem --diskspec vda,snapshot=internal error: unsupported configuration: internal snapshot for disk vda unsupported for storage type raw # virsh snapshot-create-as vm-test snap1 --disk-only --atomic --diskspec vda,snapshot=internal error: unsupported configuration: active qemu domains require external disk snapshots; disk vda requested internal and some other test, without any success:( What I just would like to achieve is to do a consistent disk snapshot of the VM without VM shutdown (suspend is ok) and using virsh as this seems supported (I can manually run rbd snap create, I know). And if possible whol mem+disk consistent snapshot without downtime :) Any hint to make this working, as anyone out ther having succes in such process?