e2fsck -fDC0 /tmp/fs.ext
e2fsck 1.41.14 (22-Dec-2010)
Pass 1: Checking inodes, blocks, and sizes
Inode 12 missing EXTENT_FL, but is in extents format
Fix<y>? yes

Inode 12 has an invalid extent
        (logical block 0, invalid physical block 193290, len 1)
Clear<y>? yes

Inode 12, i_size is 0, should be 9216.  Fix<y>? yes

Inode 12, i_blocks is 2, should be 14.  Fix<y>? yes


Running additional passes to resolve blocks claimed by more than one inode...
Pass 1B: Rescanning for multiply-claimed blocks
Multiply-claimed block(s) in inode 7: 4
Multiply-claimed block(s) in inode 12: 4 1 1 1 4
Pass 1C: Scanning directories for inodes with multiply-claimed blocks
Pass 1D: Reconciling multiply-claimed blocks
(There are 1 inodes containing multiply-claimed blocks.)

File /baz (inode #12, mod time Thu Apr 28 15:35:15 2011)
  has 5 multiply-claimed block(s), shared with 2 file(s):
        <filesystem metadata>
        <The group descriptor inode> (inode #7, mod time Thu Apr 28 15:34:57 2011)
Clone multiply-claimed blocks<y>? yes

Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 3A: Optimizing directories
Pass 4: Checking reference counts
Pass 5: Checking group summary information
Block bitmap differences:  +62218
Fix<y>? yes

Free blocks count wrong for group #0 (7671, counted=7666).
Fix<y>? yes

Free blocks count wrong for group #7 (7684, counted=7683).
Fix<y>? yes

Free blocks count wrong (93486, counted=93480).
Fix<y>? yes


/tmp/fs.ext: ***** FILE SYSTEM WAS MODIFIED *****
/tmp/fs.ext: 12/25688 files (8.3% non-contiguous), 8920/102400 blocks