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import json
import re
import shutil
import unittest
import overrides_hack
from packaging.version import Version
from utils import run_command, read_file, fake_path, TestTags, tag_test, required_plugins
import gi
gi.require_version('GLib', '2.0')
gi.require_version('BlockDev', '3.0')
from gi.repository import GLib, BlockDev
@required_plugins(("nvdimm",))
class NVDIMMTestCase(unittest.TestCase):
requested_plugins = BlockDev.plugin_specs_from_names(("nvdimm",))
@classmethod
def setUpClass(cls):
if not shutil.which("ndctl"):
raise unittest.SkipTest("ndctl executable not found in $PATH, skipping.")
if not BlockDev.is_initialized():
BlockDev.init(cls.requested_plugins, None)
else:
BlockDev.reinit(cls.requested_plugins, True, None)
class NVDIMMNamespaceTestCase(NVDIMMTestCase):
sys_info = None
def _get_nvdimm_info(self):
ret, out, _err = run_command("ndctl list")
if ret != 0 or not out:
return None
decoder = json.JSONDecoder()
decoded = decoder.decode(out)
return decoded
def _get_ndctl_version(self):
_ret, out, _err = run_command("ndctl --version")
m = re.search(r"([\d\.]+)", out)
if not m or len(m.groups()) != 1:
raise RuntimeError("Failed to determine ndctl version from: %s" % out)
return Version(m.groups()[0])
def setUp(self):
self.sys_info = self._get_nvdimm_info()
if not self.sys_info:
self.skipTest("No NVDIMM devices available.")
# skip the test if there is more than one device
# these tests change nvdimm mode a we need to be sure that we are really
# working with the 'fake' device created by the memmap kernel cmdline option
if len(self.sys_info) > 1:
self.skipTest("Multiple NVDIMM devices found.")
# get the dict for the first nvdimm device
self.sys_info = self.sys_info[0]
# skip the tests if the nvdimm is a 'fake' one
cmdline = read_file("/proc/cmdline")
if "memmap=" not in cmdline:
self.skipTest("NVDIMM device found, but not created by the 'memmap' kernel command-line option.")
def _check_namespace_info(self, bd_info):
self.assertEqual(bd_info.dev, self.sys_info["dev"])
self.assertEqual(bd_info.mode, BlockDev.nvdimm_namespace_get_mode_from_str(self.sys_info["mode"]))
self.assertEqual(bd_info.size, self.sys_info["size"])
if "uuid" in self.sys_info.keys():
self.assertEqual(bd_info.uuid, self.sys_info["uuid"])
else:
self.assertIsNone(bd_info.uuid)
if "blockdev" in self.sys_info.keys():
self.assertEqual(bd_info.blockdev, self.sys_info["blockdev"])
else:
self.assertIsNone(bd_info.blockdev)
if "sector_size" in self.sys_info.keys():
self.assertEqual(bd_info.sector_size, self.sys_info["sector_size"])
else:
# libndctl (and libblockdev too) returns 512 as default value
# even for modes where sector size doesn't make sense
self.assertEqual(bd_info.sector_size, 512)
@tag_test(TestTags.EXTRADEPS, TestTags.CORE)
def test_namespace_info(self):
# get info about our 'testing' namespace
info = BlockDev.nvdimm_namespace_info(self.sys_info["dev"])
self._check_namespace_info(info)
# test also that getting namespace devname from blockdev name works
namespace = BlockDev.nvdimm_namespace_get_devname(info.blockdev)
self.assertEqual(namespace, self.sys_info["dev"])
# should work even with path, e.g. /dev/pmem0
namespace = BlockDev.nvdimm_namespace_get_devname("/dev/" + info.blockdev)
self.assertEqual(namespace, self.sys_info["dev"])
info = BlockDev.nvdimm_namespace_info("definitely-not-a-namespace")
self.assertIsNone(info)
@tag_test(TestTags.EXTRADEPS, TestTags.CORE)
def test_list_namespaces(self):
bd_namespaces = BlockDev.nvdimm_list_namespaces()
self.assertEqual(len(bd_namespaces), 1)
self._check_namespace_info(bd_namespaces[0])
@tag_test(TestTags.EXTRADEPS, TestTags.UNSAFE)
def test_enable_disable(self):
# non-existing/unknown namespace
with self.assertRaises(GLib.GError):
BlockDev.nvdimm_namespace_enable("definitely-not-a-namespace")
# enable the namespace
ret = BlockDev.nvdimm_namespace_enable(self.sys_info["dev"])
self.assertTrue(ret)
info = BlockDev.nvdimm_namespace_info(self.sys_info["dev"])
self.assertTrue(info.enabled)
# disable the namespace
ret = BlockDev.nvdimm_namespace_disable(self.sys_info["dev"])
self.assertTrue(ret)
info = BlockDev.nvdimm_namespace_info(self.sys_info["dev"])
self.assertFalse(info.enabled)
# and enable it again
ret = BlockDev.nvdimm_namespace_enable(self.sys_info["dev"])
self.assertTrue(ret)
info = BlockDev.nvdimm_namespace_info(self.sys_info["dev"])
self.assertTrue(info.enabled)
@tag_test(TestTags.EXTRADEPS, TestTags.UNSAFE)
def test_namespace_reconfigure(self):
# active namespace -- reconfigure doesn't work without force
with self.assertRaises(GLib.GError):
BlockDev.nvdimm_namespace_reconfigure(self.sys_info["dev"],
BlockDev.NVDIMMNamespaceMode.SECTOR,
False)
# non-existing/unknown mode
with self.assertRaises(GLib.GError):
BlockDev.nvdimm_namespace_reconfigure(self.sys_info["dev"],
BlockDev.NVDIMMNamespaceMode.UNKNOWN,
True)
# non-existing/unknown namespace
with self.assertRaises(GLib.GError):
BlockDev.nvdimm_namespace_reconfigure("definitely-not-a-namespace",
BlockDev.NVDIMMNamespaceMode.SECTOR,
True)
# switch to sector mode
ret = BlockDev.nvdimm_namespace_reconfigure(self.sys_info["dev"],
BlockDev.NVDIMMNamespaceMode.SECTOR,
True, extra={"-l": "512"})
self.assertTrue(ret)
info = BlockDev.nvdimm_namespace_info(self.sys_info["dev"])
self.assertEqual(info.mode, BlockDev.NVDIMMNamespaceMode.SECTOR)
# ndctl renamed the modes from 'memory' and 'dax' to 'fsdax' and 'devdax'
# in version 60, so we need to choose different mode based on version
ndctl_version = self._get_ndctl_version()
if ndctl_version >= Version("60.0"):
mode = BlockDev.NVDIMMNamespaceMode.FSDAX
else:
mode = BlockDev.NVDIMMNamespaceMode.MEMORY
ret = BlockDev.nvdimm_namespace_reconfigure(self.sys_info["dev"],
mode, True)
self.assertTrue(ret)
info = BlockDev.nvdimm_namespace_info(self.sys_info["dev"])
self.assertEqual(info.mode, mode)
# and back to sector
ret = BlockDev.nvdimm_namespace_reconfigure(self.sys_info["dev"],
BlockDev.NVDIMMNamespaceMode.SECTOR,
True, extra={"-l": "512"})
self.assertTrue(ret)
info = BlockDev.nvdimm_namespace_info(self.sys_info["dev"])
self.assertEqual(info.mode, BlockDev.NVDIMMNamespaceMode.SECTOR)
class NVDIMMDepsTest(NVDIMMTestCase):
@tag_test(TestTags.NOSTORAGE)
def test_missing_dependencies(self):
"""Verify that checking for technology support works as expected"""
with fake_path(all_but="ndctl"):
# no ndctl tool available
with self.assertRaisesRegex(GLib.GError, "The 'ndctl' utility is not available"):
BlockDev.nvdimm_is_tech_avail(BlockDev.NVDIMMTech.NAMESPACE, BlockDev.NVDIMMTechMode.RECONFIGURE)
# ndctl is needed only for reconfigure
avail = BlockDev.nvdimm_is_tech_avail(BlockDev.NVDIMMTech.NAMESPACE, BlockDev.NVDIMMTechMode.CREATE)
self.assertTrue(avail)
class NVDIMMNoDevTest(NVDIMMTestCase):
@tag_test(TestTags.NOSTORAGE)
def test_plugin_version(self):
self.assertEqual(BlockDev.get_plugin_soname(BlockDev.Plugin.NVDIMM), "libbd_nvdimm.so.3")
@tag_test(TestTags.NOSTORAGE)
def test_supported_sector_sizes(self):
"""Verify that getting supported sector sizes works as expected"""
with self.assertRaises(GLib.GError):
BlockDev.nvdimm_namespace_get_supported_sector_sizes(BlockDev.NVDIMMNamespaceMode.UNKNOWN)
sizes = BlockDev.nvdimm_namespace_get_supported_sector_sizes(BlockDev.NVDIMMNamespaceMode.SECTOR)
self.assertListEqual(sizes, [512, 520, 528, 4096, 4104, 4160, 4224])
sizes = BlockDev.nvdimm_namespace_get_supported_sector_sizes(BlockDev.NVDIMMNamespaceMode.FSDAX)
self.assertListEqual(sizes, [512, 4096])
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