def offline(zpool, *vdevs, **kwargs):
    '''
    .. versionadded:: 2015.5.0

    Ensure that the specified devices are offline

    .. warning::

        By default, the ``OFFLINE`` state is persistent. The device remains
        offline when the system is rebooted. To temporarily take a device
        offline, use ``temporary=True``.

    zpool : string
        name of storage pool

    vdevs : string
        One or more devices

    temporary : boolean
        Enable temporarily offline

    CLI Example:

    .. code-block:: bash

        salt '*' zpool.offline myzpool /path/to/vdev1 [...] [temporary=True|False]

    '''
    ## Configure pool
    # NOTE: initialize the defaults
    flags = []
    target = []

    # NOTE: set extra config based on kwargs
    if kwargs.get('temporary', False):
        flags.append('-t')

    # NOTE: append the pool name and specifications
    target.append(zpool)
    target.extend(vdevs)

    ## Take a device offline
    res = __salt__['cmd.run_all'](
        __utils__['zfs.zpool_command'](
            command='offline',
            flags=flags,
            target=target,
        ),
        python_shell=False,
    )

    return __utils__['zfs.parse_command_result'](res, 'offlined')