Merge pull request #580 from karolinavelkaja/fault_injection_raid_as_cache_test

adding test 'test_raid_as_cache'

test/functional/tests/volumes/test_raid_as_cache.py

@@ -0,0 +1,76 @@
+#
+# Copyright(c) 2020 Intel Corporation
+# SPDX-License-Identifier: BSD-3-Clause-Clear
+#
+
+import pytest
+
+from api.cas import casadm
+from api.cas.cache_config import CacheMode
+from core.test_run import TestRun
+from storage_devices.disk import DiskType, DiskTypeSet
+from storage_devices.raid import Raid, RaidConfiguration, MetadataVariant, Level
+from test_tools import fs_utils
+from test_tools.disk_utils import Filesystem
+from test_utils.size import Size, Unit
+
+mount_point = "/mnt/test"
+test_file_path = f"{mount_point}/test_file"
+test_file_tmp_path = "/tmp/filetmp"
+test_file_size = Size(500, Unit.KiloByte)
+files_number = 100
+
+
+@pytest.mark.parametrizex("cache_mode", CacheMode)
+@pytest.mark.require_disk("core", DiskTypeSet([DiskType.optane, DiskType.nand]))
+@pytest.mark.require_disk("cache1", DiskTypeSet([DiskType.sata, DiskType.hdd]))
+@pytest.mark.require_disk("cache2", DiskTypeSet([DiskType.sata, DiskType.hdd]))
+def test_raid_as_cache(cache_mode):
+    """
+        title: Test if SW RAID1 can be a cache device.
+        description: |
+          Test if SW RAID1 can be a cache for CAS device.
+        pass_criteria:
+          - Successful creation of RAID and building CAS device with it.
+          - Files copied successfully, the md5sum match the origin one.
+    """
+    with TestRun.step("Create RAID1."):
+        raid_disk = TestRun.disks['cache1']
+        raid_disk.create_partitions([Size(2, Unit.GibiByte)])
+        raid_disk_1 = raid_disk.partitions[0]
+        raid_disk2 = TestRun.disks['cache2']
+        raid_disk2.create_partitions([Size(2, Unit.GibiByte)])
+        raid_disk_2 = raid_disk2.partitions[0]
+
+        config = RaidConfiguration(
+            level=Level.Raid1,
+            metadata=MetadataVariant.Legacy,
+            number_of_devices=2)
+
+        raid_volume = Raid.create(config, [raid_disk_1, raid_disk_2])
+        TestRun.LOGGER.info(f"RAID created successfully.")
+
+    with TestRun.step("Prepare core device."):
+        core_disk = TestRun.disks['core']
+        core_disk.create_partitions([Size(2, Unit.GibiByte)])
+        core_dev = core_disk.partitions[0]
+
+    with TestRun.step("Create CAS device with RAID1 as cache."):
+        cache = casadm.start_cache(raid_volume, cache_mode, force=True)
+        core = cache.add_core(core_dev)
+
+        core.create_filesystem(Filesystem.ext3)
+        core.mount(mount_point)
+
+    with TestRun.step("Copy files to cache and check md5sum."):
+        for i in range(0, files_number):
+            test_file = fs_utils.create_random_test_file(test_file_tmp_path, test_file_size)
+            test_file_copied = test_file.copy(test_file_path, force=True)
+
+            if test_file.md5sum() != test_file_copied.md5sum():
+                TestRun.LOGGER.error("Checksums are different.")
+
+            fs_utils.remove(test_file.full_path, True)
+            fs_utils.remove(test_file_copied.full_path, True)
+
+        TestRun.LOGGER.info(f"Successful verification.")