--- /etc/init.d/lighttpd	2009-06-20 13:04:34.000000000 +0200
+++ lighttpd	2009-07-07 13:05:23.000000000 +0200
@@ -18,6 +17,21 @@
 		return 1
 	fi
 
+    local -i free_space
+    local fs
+
+    if [[ `mount | grep \/var` -eq 0 ]]; then
+        fs='/var'
+    else
+        fs='rootfs'
+    fi
+
+    free_space=`df | grep $fs | gawk '{ print $3 }'`
+    if [[ $free_space < 2048 ]]; then
+        ewarn "$fs has few disk space ($free_space) left, lighttpd will bug"
+        return 1
+    fi
+
 	/usr/sbin/lighttpd -t -f ${LIGHTTPD_CONF} >/dev/null
 }