def _exp_obj_md5(self, read_size):
logging.getLogger("pyocf").warning(
"Reading whole exported object! This disturbs statistics values")
read_buffer_all = Data(self.parent.device.size)
read_buffer = Data(read_size)
position = 0
while position < read_buffer_all.size:
io = self.new_io(self.parent.get_default_queue(), position,
read_size, IoDir.READ, 0, 0)
io.set_data(read_buffer)
cmpl = OcfCompletion([("err", c_int)])
io.callback = cmpl.callback
io.submit()
cmpl.wait()
if cmpl.results["err"]:
raise Exception("Error reading whole exported object")
read_buffer_all.copy(read_buffer, position, 0, read_size)
position += read_size
return read_buffer_all.md5()
def test_load_cache_with_cores(pyocf_ctx, open_cores):
cache_device = RamVolume(S.from_MiB(40))
core_device = RamVolume(S.from_MiB(40))
cache = Cache.start_on_device(cache_device)
core = Core.using_device(core_device, name="test_core")
cache.add_core(core)
vol = CoreVolume(core, open=True)
write_data = Data.from_string("This is test data")
io = vol.new_io(cache.get_default_queue(),
S.from_sector(3).B, write_data.size, IoDir.WRITE, 0, 0)
io.set_data(write_data)
cmpl = OcfCompletion([("err", c_int)])
io.callback = cmpl.callback
io.submit()
cmpl.wait()
cache.stop()
cache = Cache.load_from_device(cache_device, open_cores=open_cores)
if not open_cores:
cache.add_core(core, try_add=True)
else:
core = cache.get_core_by_name("test_core")
vol = CoreVolume(core, open=True)
read_data = Data(write_data.size)
io = vol.new_io(cache.get_default_queue(),
S.from_sector(3).B, read_data.size, IoDir.READ, 0, 0)
io.set_data(read_data)
cmpl = OcfCompletion([("err", c_int)])
io.callback = cmpl.callback
io.submit()
cmpl.wait()
assert read_data.md5() == write_data.md5()
assert vol.md5() == core_device.md5()