It is possible to synchronise a volume to an other node in a defined interval.
So if a node fail there will be an copy of the volumes from a VM
on an other node.
With this copy it is possible to start the VM on this node.
adds a new class (intended to be used under nodes in pve-manager)
which adds the three api calls: list, smart and init
list being a general list of the available disk with infos
smart being a call to get the smart data from a given device
init being a call to write a gpt header to an unused disk
Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
