diff --git a/diskutil.py b/diskutil.py
index 472edb93..ab15096d 100644
--- a/diskutil.py
+++ b/diskutil.py
@@ -7,6 +7,7 @@
 from constants import MultipathConfig
 import fcntl
 import glob
+import subprocess
 import shutil
 import util
 import netutil
@@ -23,7 +24,11 @@
 def mpath_cli_is_working():
     regex = re.compile("switchgroup")
     try:
-        (rc,stdout) = util.runCmd2(["multipathd","-k"], with_stdout=True, inputtext="help")
+        proc = subprocess.Popen(["multipathd", "-k"],
+                                stdout=subprocess.PIPE,
+                                stderr=subprocess.STDOUT,
+                                stdin=subprocess.PIPE, text=True)
+        stdout, stderr = proc.communicate(input="help")
         m=regex.search(stdout)
         return bool(m)
     except:
@@ -60,7 +65,7 @@ def mpath_enable(mpath_config):
         assert 0
 
     # launch manually to make possible to wait initialization
-    util.runCmd2(["/sbin/multipath", "-v0", "-B"])
+    util.runCmd2(["/sbin/multipath", "-v0"])
     time.sleep(1)
     util.runCmd2(util.udevsettleCmd())
 
diff --git a/init b/init
index cd24e97d..35396090 100755
--- a/init
+++ b/init
@@ -116,7 +116,7 @@ def main(args):
 
     try:
         installer_version = subprocess.check_output(
-            ['rpm', '-q', '--qf', '%{VERSION}-%{RELEASE}', 'host-installer'])
+            ['rpm', '-q', '--qf', '%{VERSION}-%{RELEASE}', 'host-installer'], text=True)
     except Exception:
         installer_version = 'unknown'