def test_stop(pyocf_ctx, mode: CacheMode, cls: CacheLineSize, with_flush: bool):
"""Stopping cache.
Check if cache is stopped properly in different modes with or without preceding flush operation.
"""
cache_device = Volume(Size.from_MiB(20))
core_device = Volume(Size.from_MiB(5))
cache = Cache.start_on_device(cache_device, cache_mode=mode, cache_line_size=cls)
core_exported = Core.using_device(core_device)
cache.add_core(core_exported)
cls_no = 10
run_io_and_cache_data_if_possible(core_exported, mode, cls, cls_no)
stats = cache.get_stats()
assert int(stats["conf"]["dirty"]) == (cls_no if mode.lazy_write() else 0),\
"Dirty data before MD5"
md5_exported_core = core_exported.exp_obj_md5()
if with_flush:
cache.flush()
cache.stop()
if mode.lazy_write() and not with_flush:
assert core_device.md5() != md5_exported_core, \
"MD5 check: core device vs exported object with dirty data"
else:
assert core_device.md5() == md5_exported_core, \
"MD5 check: core device vs exported object with clean data"
def test_simple_wt_write(pyocf_ctx):
cache_device = Volume(S.from_MiB(30))
core_device = Volume(S.from_MiB(30))
cache = Cache.start_on_device(cache_device)
core = Core.using_device(core_device)
cache.add_core(core)
cache_device.reset_stats()
core_device.reset_stats()
write_data = Data.from_string("This is test data")
io = core.new_io(cache.get_default_queue(),
S.from_sector(1).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()
assert cmpl.results["err"] == 0
assert cache_device.get_stats()[IoDir.WRITE] == 1
stats = cache.get_stats()
assert stats["req"]["wr_full_misses"]["value"] == 1
assert stats["usage"]["occupancy"]["value"] == 1
assert core.exp_obj_md5() == core_device.md5()
cache.stop()
def test_simple_wt_write(pyocf_ctx):
cache_device = Volume(S.from_MiB(100))
core_device = Volume(S.from_MiB(200))
cache = Cache.start_on_device(cache_device)
core = Core.using_device(core_device)
queue = Queue(cache)
cache.add_core(core)
cache_device.reset_stats()
core_device.reset_stats()
write_data = Data.from_string("This is test data")
io = core.new_io()
io.set_data(write_data)
io.configure(20, write_data.size, IoDir.WRITE, 0, 0)
io.set_queue(queue)
io.submit()
assert cache_device.get_stats()[IoDir.WRITE] == 1
stats = cache.get_stats()
assert stats["req"]["wr_full_misses"]["value"] == 1
assert stats["usage"]["occupancy"]["value"] == 1
assert core.exp_obj_md5() == core_device.md5()