ubuntu@ubuntu:~$ sudo e2fsck -f -b 32768 -y /dev/sda1
e2fsck 1.42.9 (4-Feb-2014)
Superblock needs_recovery flag is clear, but journal has data.
Recovery flag not set in backup superblock, so running journal anyway.
/dev/sda1: recovering journal
Pass 1: Checking inodes, blocks, and sizes
Deleted inode 7214693 has zero dtime.  Fix? yes