def test_loaded_module_no_device(self):
"""Loaded module with no device entry should be skipped."""
# We can hit this case fairly readily simply by unmounting
# targets and leaving modules loaded. We can simulate it
# by creating a /proc/modules file with one of our Audit
# classes' modules in it and an empty devices
# file.
os.makedirs(os.path.join(self.test_root, "sys/kernel/debug/lustre"))
# Create a modules file with... I dunno, lnet and mgs entries.
f = open(os.path.join(self.test_root, "proc/modules"), "w+")
f.write("""
lnet 233888 3 ptlrpc,ksocklnd,obdclass, Live 0xffffffffa076e000
exportfs 4202 1 fsfilt_ldiskfs, Live 0xffffffffa0d22000
mgs 153919 1 - Live 0xffffffffa0cfa000
mgc 50620 2 mgs, Live 0xffffffffa0a90000
""")
f.close()
# Create an empty devices file
open(os.path.join(self.test_root, "sys/kernel/debug/lustre/devices"), "w+").close()
# Ideally, our audit aggregator should never instantiate the
# audit in the first place.
audit = LocalAudit()
assert MgsAudit not in audit.audit_classes()
# On the other hand, some modules don't have a corresponding
# device entry, and therefore the audit should be instantiated.
audit = LocalAudit()
assert LnetAudit in audit.audit_classes()
def test_loaded_module_no_stats(self):
"""Loaded modules with no stats files should be skipped."""
# An easily-repeatable example of when this happens is when
# lnet.ko is loaded but LNet is stopped.
os.makedirs(os.path.join(self.test_root, "proc/sys/lnet"))
f = open(os.path.join(self.test_root, "proc/modules"), "w+")
f.write("""
lnet 233888 3 ptlrpc,ksocklnd,obdclass, Live 0xffffffffa076e000
""")
f.close()
# Create dummy nodestats files
f = open(os.path.join(self.test_root, "proc/meminfo"), "w")
f.write("MemTotal: 3991680 kB\n")
f.close()
f = open(os.path.join(self.test_root, "proc/stat"), "w")
f.write("cpu 24601 2 33757 3471279 10892 6 676 0 0\n")
f.close()
audit = LocalAudit()
assert LnetAudit in audit.audit_classes()
# this shouldn't raise a runtime error
audit.metrics()
def test_missing_brw_stats(self):
"""Catch a race where brw_stats hasn't been created yet."""
os.makedirs(os.path.join(self.test_root, "sys/kernel/debug/lustre"))
f = open(os.path.join(self.test_root, "proc/modules"), "w+")
f.write("obdfilter 265823 4 - Live 0xffffffffa06b5000")
f.close()
f = open(os.path.join(self.test_root, "sys/kernel/debug/lustre/devices"), "w+")
f.write(" 2 UP obdfilter test-OST0000 test-OST0000_UUID 5")
f.close()
# Create dummy nodestats files
f = open(os.path.join(self.test_root, "proc/meminfo"), "w")
f.write("MemTotal: 3991680 kB\n")
f.close()
f = open(os.path.join(self.test_root, "proc/stat"), "w")
f.write("cpu 24601 2 33757 3471279 10892 6 676 0 0\n")
f.close()
audit = LocalAudit()
assert ObdfilterAudit in audit.audit_classes()
# this shouldn't raise a runtime error
audit.metrics()
class TestLocalAudit(PatchedContextTestCase):
def setUp(self):
tests = os.path.join(os.path.dirname(__file__), '..')
self.test_root = os.path.join(tests,
"data/lustre_versions/2.0.66/mds_mgs")
super(TestLocalAudit, self).setUp()
self.audit = LocalAudit()
def test_localaudit_audit_classes(self):
"""LocalAudit.audit_classes() should return a list of classes."""
self.assertEqual(self.audit.audit_classes(),
[LnetAudit, MdtAudit, MgsAudit, NodeAudit])
