def _io_to_core(vol: Volume, queue: Queue, data: Data):
io = vol.new_io(queue, 0, data.size, IoDir.WRITE, 0, 0)
io.set_data(data)
completion = OcfCompletion([("err", c_int)])
io.callback = completion.callback
io.submit()
completion.wait()
assert completion.results["err"] == 0, "IO to exported object completion"
def io_from_exported_object(vol: Volume, queue: Queue, buffer_size: int,
offset: int):
read_buffer = Data(buffer_size)
io = vol.new_io(queue, offset, read_buffer.size, IoDir.READ, 0, 0)
io.set_data(read_buffer)
completion = OcfCompletion([("err", c_int)])
io.callback = completion.callback
io.submit()
completion.wait()
assert completion.results["err"] == 0, "IO from exported object completion"
return read_buffer
def io_operation(
vol: Volume,
queue: Queue,
data: Data,
io_direction: int,
offset: int = 0,
io_class: int = 0,
):
io = vol.new_io(queue, offset, data.size, io_direction, io_class, 0)
io.set_data(data)
completion = OcfCompletion([("err", c_int)])
io.callback = completion.callback
io.submit()
completion.wait()
return completion