diff --git a/lib/lvm b/lib/lvm
index 54976a3..1fe2683 100644
--- a/lib/lvm
+++ b/lib/lvm
@@ -145,6 +145,13 @@
     fi
 }
 
+# clean_lvm_filter() Remove the filter rule set in set_lvm_filter()
+#
+# Usage: clean_lvm_filter()
+function clean_lvm_filter {
+    sudo sed -i "s/^.*# from devstack$//" /etc/lvm/lvm.conf
+}
+
 # set_lvm_filter() Gather all devices configured for LVM and
 # use them to build a global device filter
 # set_lvm_filter() Create a device filter
@@ -154,7 +161,7 @@
 #
 # Usage: set_lvm_filter()
 function set_lvm_filter {
-    local filter_suffix='"r|.*|" ]'
+    local filter_suffix='"r|.*|" ]  # from devstack'
     local filter_string="global_filter = [ "
     local pv
     local vg
@@ -167,6 +174,7 @@
     done
     filter_string=$filter_string$filter_suffix
 
+    clean_lvm_filter
     sudo sed -i "/# global_filter = \[*\]/a\    $global_filter$filter_string" /etc/lvm/lvm.conf
     echo_summary "set lvm.conf device global_filter to: $filter_string"
 }