Refactor host dmesg verification into a Setuper

virttest/env_process.py

@@ -60,6 +60,7 @@
     CheckRunningAsRoot,
 )
 from virttest.test_setup.storage import StorageConfig
+from virttest.test_setup.verify import VerifyHostDMesg
 from virttest.test_setup.vms import UnrequestedVMHandler
 from virttest.utils_version import VersionInterval
 
@@ -1030,12 +1031,8 @@ def preprocess(test, params, env):
             )
             a_process.system(reset_cmd, shell=True)
 
-    # Check host for any errors to start with and just report and
-    # clear it off, so that we do not get the false test failures.
-    if params.get("verify_host_dmesg", "yes") == "yes":
-        utils_misc.verify_dmesg(ignore_result=True)
-
     _setup_manager.initialize(test, params, env)
+    _setup_manager.register(VerifyHostDMesg)
     _setup_manager.register(SwitchSMTOff)
     _setup_manager.register(CheckRunningAsRoot)
     _setup_manager.register(CheckInstalledCMDs)
@@ -1774,22 +1771,6 @@ def postprocess(test, params, env):
             err += "\nPostprocess command: %s" % str(details).replace("\n", "\n  ")
             LOG.error(details)
 
-    if params.get("verify_host_dmesg", "yes") == "yes":
-        dmesg_log_file = params.get("host_dmesg_logfile", "host_dmesg.log")
-        level = params.get("host_dmesg_level", 3)
-        expected_host_dmesg = params.get("expected_host_dmesg", "")
-        ignore_result = params.get("host_dmesg_ignore", "no") == "yes"
-        dmesg_log_file = utils_misc.get_path(test.debugdir, dmesg_log_file)
-        try:
-            utils_misc.verify_dmesg(
-                dmesg_log_file=dmesg_log_file,
-                ignore_result=ignore_result,
-                level_check=level,
-                expected_dmesg=expected_host_dmesg,
-            )
-        except exceptions.TestFail as details:
-            err += "\nHost dmesg verification failed: %s" % details
-
     err += "\n".join(_setup_manager.do_cleanup())
 
     # Run this hook after any vms are actually off to ensure data is

virttest/test_setup/verify.py

@@ -0,0 +1,25 @@
+from virttest import utils_misc
+from virttest.test_setup.core import Setuper
+
+
+class VerifyHostDMesg(Setuper):
+    def setup(self):
+        # Check host for any errors to start with and just report and
+        # clear it off, so that we do not get the false test failures.
+        if self.params.get("verify_host_dmesg", "yes") == "yes":
+            utils_misc.verify_dmesg(ignore_result=True)
+
+    def cleanup(self):
+        if self.params.get("verify_host_dmesg", "yes") == "yes":
+            dmesg_log_file = self.params.get("host_dmesg_logfile", "host_dmesg.log")
+            level = self.params.get("host_dmesg_level", 3)
+            expected_host_dmesg = self.params.get("expected_host_dmesg", "")
+            ignore_result = self.params.get("host_dmesg_ignore", "no") == "yes"
+            dmesg_log_file = utils_misc.get_path(self.test.debugdir, dmesg_log_file)
+            # exception will be propagated so setup_manager handles it instead
+            utils_misc.verify_dmesg(
+                dmesg_log_file=dmesg_log_file,
+                ignore_result=ignore_result,
+                level_check=level,
+                expected_dmesg=expected_host_dmesg,
+            )