diff --git a/pym/cl_utils.py b/pym/cl_utils.py
index bea797c..11bf591 100644
--- a/pym/cl_utils.py
+++ b/pym/cl_utils.py
@@ -1301,3 +1301,21 @@ def getOsProberHash(getContentFunc=None):
     else:
         osProberHash = {}
     return osProberHash
+
+def refreshLVM():
+    """Run command which refresh information about LVM"""
+    vgscan = getProgPath('/sbin/vgscan')
+    vgchange = getProgPath('/sbin/vgchange')
+    lvchange = getProgPath('/sbin/lvchange')
+    
+    if vgscan and vgchange and lvchange:
+        process(vgscan).success()
+        process(vgchange,'-ay','--refresh').success()
+        for group in getLvmGroups():
+            process(lvchange,'-ay','--refresh',group).success()
+
+def refreshUdev():
+    """Run command which refresh information about device in udev"""
+    udevadm = getProgPath('/sbin/udevadm')
+    if udevadm:
+        process(udevadm,"trigger","--subsystem-match","block").success()