ubuntu@ubuntu:~$ sudo e2fsck -C0 -f -y -v /dev/sda2
e2fsck 1.43.4 (31-Jan-2017)
Pass 1: Checking inodes, blocks, and sizes
Inodes that were part of a corrupted orphan linked list found.  Fix? yes

Inode 23202626 was part of the orphaned inode list.  FIXED.
Inode 23202628 was part of the orphaned inode list.  FIXED.
Inode 23202629 was part of the orphaned inode list.  FIXED.
Inode 23202630 was part of the orphaned inode list.  FIXED.
Inode 23202633 was part of the orphaned inode list.  FIXED.
Deleted inode 23202635 has zero dtime.  Fix? yes

Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
Block bitmap differences:  -92831750 -92832260 -92877857 -92881940
Fix? yes

Free blocks count wrong (115841789, counted=115841585).
Fix? yes

Free inodes count wrong (29964179, counted=29964174).
Fix? yes


/dev/sda2: ***** FILE SYSTEM WAS MODIFIED *****

      534642 inodes used (1.75%, out of 30498816)
        2104 non-contiguous files (0.4%)
         364 non-contiguous directories (0.1%)
             # of inodes with ind/dind/tind blocks: 0/0/0
             Extent depth histogram: 490480/91
     6123471 blocks used (5.02%, out of 121965056)
           0 bad blocks
           2 large files

      394236 regular files
       83100 directories
           7 character device files
           0 block device files
           0 fifos
           6 links
       57289 symbolic links (44055 fast symbolic links)
           1 socket
------------
      534639 files