pyVmomi: create_virtual_disk function

create_virtual_disk.py

def create_virtual_disk(capacity, controller_key, unit_number, in_bytes=False):
    """
    :param capacity: Capacity of new disk in Bytes
    :param unit_number: device unit
    :return:
    """
    virtual_disk = vim.vm.device.VirtualDisk()
    if in_bytes:
        virtual_disk.capacityInBytes = capacity
    else:
        virtual_disk.capacityInKB = capacity

    # Verify this.
    virtual_disk.unitNumber = unit_number
    virtual_disk.controllerKey = controller_key

    # backing info
    virtual_disk_backing_info = vim.vm.device.VirtualDisk.FlatVer2BackingInfo()
    virtual_disk_backing_info.diskMode = "persistent"
    virtual_disk_backing_info.thinProvisioned = True

    # assigning backing info to virtual disk device backing
    virtual_disk.backing = virtual_disk_backing_info

    # creating virtualdevice spec and assigning recently created virtual disk
    virtual_disk_spec = vim.vm.device.VirtualDeviceSpec()
    virtual_disk_spec.device = virtual_disk
    virtual_disk_spec.fileOperation = "create"
    virtual_disk_spec.operation = "add"

    return virtual_disk_spec