def unload_modules():
TestRun.LOGGER.info("Check if CAS is installed")
if installer.check_if_installed():
TestRun.LOGGER.info("Unloading modules")
cas_module.unload_all_cas_modules()
TestRun.LOGGER.info("Stop kedr if it is running")
if Kedr.is_loaded():
Kedr.stop()
TestRun.LOGGER.info("Mounting debugfs")
os_utils.mount_debugfs()
def test_kedr_memleak_load_cas_module(module, unload_modules, install_kedr):
"""
title: Loading modules with kedr started with 'memleak' configuration
description: Load and unload modules with kedr started to watch for memory leaks
pass_criteria:
- No memory leaks observed after loading and unloading module
"""
with TestRun.step(f"Starting kedr against {module}"):
Kedr.start(module.value)
with TestRun.step(f"Loading {module}"):
os_utils.load_kernel_module(module.value)
with TestRun.step(f"Unloading {module}"):
os_utils.unload_kernel_module(module.value,
os_utils.ModuleRemoveMethod.modprobe)
with TestRun.step(f"Checking for memory leaks for {module}"):
try:
Kedr.check_for_mem_leaks(module.value)
except Exception as e:
TestRun.LOGGER.error(f"{e}")
with TestRun.step(f"Stopping kedr"):
Kedr.stop()
def test_kedr_basic_io_raw(module, unload_modules, install_kedr):
"""
title: Basic IO test with kedr started with memory leaks profile
description: |
Load CAS modules, start kedr against one of them, start cache and add core,
run simple 4 minute random IO, stop cache and unload modules
pass_criteria:
- No memory leaks observed
"""
with TestRun.step("Preparing cache device"):
cache_device = TestRun.disks['cache']
cache_device.create_partitions([Size(500, Unit.MebiByte)])
cache_part = cache_device.partitions[0]
with TestRun.step("Preparing core device"):
core_device = TestRun.disks['core']
core_device.create_partitions([Size(1, Unit.GibiByte)])
core_part = core_device.partitions[0]
with TestRun.step("Unload CAS modules if needed"):
if os_utils.is_kernel_module_loaded(module.value):
cas_module.unload_all_cas_modules()
with TestRun.step(f"Starting kedr against {module.value}"):
Kedr.start(module.value)
with TestRun.step(f"Loading CAS modules"):
os_utils.load_kernel_module(cas_module.CasModule.cache.value)
with TestRun.step("Starting cache"):
cache = casadm.start_cache(cache_part, force=True)
with TestRun.step("Adding core"):
core = cache.add_core(core_dev=core_part)
with TestRun.step(f"Running IO"):
(Fio().create_command()
.io_engine(IoEngine.libaio)
.run_time(timedelta(minutes=4))
.time_based()
.read_write(ReadWrite.randrw)
.target(f"{core.path}")
.direct()
).run()
with TestRun.step("Stopping cache"):
cache.stop()
with TestRun.step(f"Unloading CAS modules"):
cas_module.unload_all_cas_modules()
with TestRun.step(f"Checking for memory leaks for {module.value}"):
try:
Kedr.check_for_mem_leaks(module.value)
except Exception as e:
TestRun.LOGGER.error(f"{e}")
with TestRun.step(f"Stopping kedr"):
Kedr.stop()
def test_kedr_start_cache(module, unload_modules, install_kedr):
"""
title: Start cache and add core with kedr started against one of CAS modules
description: |
Load CAS modules, start kedr against one of them, start cache and add core,
stop cache and unload modules
pass_criteria:
- No memory leaks observed
"""
with TestRun.step("Preparing cache device"):
cache_device = TestRun.disks['cache']
cache_device.create_partitions([Size(500, Unit.MebiByte)])
cache_part = cache_device.partitions[0]
with TestRun.step("Preparing core device"):
core_device = TestRun.disks['core']
core_device.create_partitions([Size(1, Unit.GibiByte)])
core_part = core_device.partitions[0]
with TestRun.step("Unload CAS modules if needed"):
if os_utils.is_kernel_module_loaded(module.value):
cas_module.unload_all_cas_modules()
with TestRun.step(f"Starting kedr against {module.value}"):
Kedr.start(module.value)
with TestRun.step(f"Loading CAS modules"):
os_utils.load_kernel_module(cas_module.CasModule.cache.value)
with TestRun.step("Starting cache"):
cache = casadm.start_cache(cache_part, force=True)
with TestRun.step("Adding core"):
cache.add_core(core_dev=core_part)
with TestRun.step("Stopping cache"):
cache.stop()
with TestRun.step(f"Unloading CAS modules"):
cas_module.unload_all_cas_modules()
with TestRun.step(f"Checking for memory leaks for {module}"):
try:
Kedr.check_for_mem_leaks(module.value)
except Exception as e:
TestRun.LOGGER.error(f"{e}")
with TestRun.step(f"Stopping kedr"):
Kedr.stop()
def test_kedr_fsim_load_cas_module(module, unload_modules, install_kedr):
"""
title: Loading modules with kedr started with 'fsim' configuration
description: Load and unload modules with kedr started to simulate kmalloc fails
pass_criteria:
- Module fails to load
"""
with TestRun.step(f"Starting kedr against {module}"):
Kedr.start(module.value, KedrProfile.FAULT_SIM)
with TestRun.step("Setting up fault simulation parameters"):
Kedr.setup_fault_injections()
with TestRun.step(f"Trying to load {module}"):
out = os_utils.load_kernel_module(module.value)
if out.exit_code == 0 \
or "Cannot allocate memory" not in out.stderr:
TestRun.LOGGER.error(f"Loading module should fail because of alloc error, instead "
f"modprobe's output is: {out}")
with TestRun.step(f"Stopping kedr"):
Kedr.stop()
def install_kedr():
TestRun.LOGGER.info("Checking if kedr is installed")
if not Kedr.is_installed():
TestRun.LOGGER.info("Installing kedr")
Kedr.install()