'Create an LDEV on the storage system.'

def create_ldev_on_storage(self, ldev, size, is_vvol):

    args = ['add', 'ldev', '-ldev_id', ldev, '-capacity', ('%sG' % size), '-emulation', 'OPEN-V', '-pool']
    if is_vvol:
        args.append('snap')
    else:
        args.append(self.conf.vsp_pool)
    self.run_raidcom(*args)
