Pastebin

key slot 0 unlocked....
command sucessful.
File descriptor 3 left open
 2 logical volume(s) in volume group "ubuntu" now active
Gave up waiting for root device. Common problems:
 - Boot args (cat /proc/cmdline)
  - check rootdelay* (did the system wait long enough?)
  - check root= (did the system wait for the right device?)
 - Missing modules (cat /proc/modules: ls /dev)
ALERT! /dev/mapper/sda4_crypt does not exists. Dropping to a shell!

Busybox...