diff --git a/testlib/infra.py b/testlib/infra.py
index 0682c66..21a30c2 100644
--- a/testlib/infra.py
+++ b/testlib/infra.py
@@ -180,7 +180,14 @@ def tearDown(self):
                 misaligned_devices = []
                 for dev in os.listdir("/sys/class/block"):
                     if fnmatch.fnmatch(dev, "dm-*"):
-                        misaligned_devices.append(dev)
+                        dev_sysfspath = os.path.join(
+                            "/sys/class/block", dev, "alignment_offset"
+                        )
+                        with open(dev_sysfspath, "r", encoding="utf-8") as dev_sysfs:
+                            dev_align = dev_sysfs.read().rstrip()
+                            if int(dev_align) != 0:
+                                misaligned_devices.append(dev)
+
                 self.assertEqual(misaligned_devices, [])
             except FileNotFoundError:
                 pass