Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Directory inode 12, block #1: directory passes checks but fails checksum. Fix? yes Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information test_filesys: ***** FILE SYSTEM WAS MODIFIED ***** test_filesys: 430/512 files (0.2% non-contiguous), 45/512 blocks Exit status is 1