ubuntu@ubuntu:~$ ls -l /dev/mapper
total 0
crw------- 1 root root 10, 236 2011-09-11 16:28 control
lrwxrwxrwx 1 root root       7 2011-09-11 14:33 lvm-root -> ../dm-1
lrwxrwxrwx 1 root root       7 2011-09-11 14:32 tmp -> ../dm-0
ubuntu@ubuntu:~$