One or more block group descriptor checksums are invalid. Fix? yes Group descriptor 0 checksum is 0xffff, should be 0x4972. FIXED. Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information Inode bitmap differences: -(12--32) Fix? yes test_filesys: ***** FILE SYSTEM WAS MODIFIED ***** test_filesys: 11/128 files (0.0% non-contiguous), 18/512 blocks Exit status is 1