defrag after upgrade

src/freedombone-upgrade

@@ -101,6 +101,7 @@ if [ -d $PROJECT_DIR ]; then
         fi
 
         lockdown_permissions
+        defrag_filesystem
     fi
 fi
 

src/freedombone-utils-filesystem

@@ -87,4 +87,12 @@ function install_tomb {
     mark_completed $FUNCNAME
 }
 
+function defrag_filesystem {
+    fs_type=$(stat -f /)
+
+    if [[ "$fs_type" == *"btrfs"* ]]; then
+        btrfs filesystem defragment -v -r /
+    fi
+}
+
 # NOTE: deliberately no exit 0