mke2fs -F -O resize_inode -o Linux -b 1024 -g 1024 test.img 16384 Filesystem label= OS type: Linux Block size=1024 (log=0) Fragment size=1024 (log=0) Stride=0 blocks, Stripe width=0 blocks 4096 inodes, 16384 blocks 819 blocks (5.00%) reserved for the super user First data block=1 Maximum filesystem blocks=8421376 16 block groups 1024 blocks per group, 1024 fragments per group 256 inodes per group Superblock backups stored on blocks: 1025, 3073, 5121, 7169, 9217 Allocating group tables: done Writing inode tables: done Writing superblocks and filesystem accounting information: done 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 test_filesys: 11/4096 files (0.0% non-contiguous), 2107/16384 blocks Exit status is 0 ----------------------------------------------- debugfs -R ''set_inode_field <7> block[2] 42'' -w test.img Exit status is 0 Resize inode not valid. Recreate? yes 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 Free blocks count wrong for group #0 (717, counted=718). Fix? yes Free blocks count wrong (14276, counted=14277). Fix? yes test_filesys: ***** FILE SYSTEM WAS MODIFIED ***** test_filesys: 11/4096 files (0.0% non-contiguous), 2107/16384 blocks Exit status is 1 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 test_filesys: 11/4096 files (0.0% non-contiguous), 2107/16384 blocks Exit status is 0 ----------------------------------------------- debugfs -R ''clri <7>'' -w test.img Exit status is 0 Resize inode not valid. Recreate? yes 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 Free blocks count wrong for group #0 (717, counted=718). Fix? yes Free blocks count wrong (14276, counted=14277). Fix? yes test_filesys: ***** FILE SYSTEM WAS MODIFIED ***** test_filesys: 11/4096 files (0.0% non-contiguous), 2107/16384 blocks Exit status is 1 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 test_filesys: 11/4096 files (0.0% non-contiguous), 2107/16384 blocks Exit status is 0 ----------------------------------------------- debugfs -R ''set_inode_field <7> bmap[524] 57'' -w test.img Exit status is 0 Resize inode not valid. Recreate? yes 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 Free blocks count wrong for group #0 (717, counted=718). Fix? yes Free blocks count wrong (14276, counted=14277). Fix? yes test_filesys: ***** FILE SYSTEM WAS MODIFIED ***** test_filesys: 11/4096 files (0.0% non-contiguous), 2107/16384 blocks Exit status is 1 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 test_filesys: 11/4096 files (0.0% non-contiguous), 2107/16384 blocks Exit status is 0 ----------------------------------------------- debugfs -R ''set_super_value reserved_gdt_blocks 15679'' -w test.img Exit status is 0 ext2fs_check_desc: Corrupt group descriptor: bad block for block bitmap ../e2fsck/e2fsck: Group descriptors look bad... trying backup blocks... 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 test_filesys: ***** FILE SYSTEM WAS MODIFIED ***** test_filesys: 11/4096 files (0.0% non-contiguous), 2107/16384 blocks Exit status is 1 ----------------------------------------------- debugfs -R ''set_super_value reserved_gdt_blocks 32'' -w test.img Exit status is 0 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 Block bitmap differences: -(35--258) -(1059--1282) -(3107--3330) -(5155--5378) -(7203--7426) -(9251--9474) Fix? yes Free blocks count wrong for group #0 (718, counted=942). Fix? yes Free blocks count wrong for group #1 (732, counted=956). Fix? yes Free blocks count wrong for group #3 (732, counted=956). Fix? yes Free blocks count wrong for group #5 (732, counted=956). Fix? yes Free blocks count wrong for group #7 (732, counted=956). Fix? yes Free blocks count wrong for group #9 (732, counted=956). Fix? yes Free blocks count wrong (14277, counted=15621). Fix? yes test_filesys: ***** FILE SYSTEM WAS MODIFIED ***** test_filesys: 11/4096 files (0.0% non-contiguous), 763/16384 blocks Exit status is 1 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 test_filesys: 11/4096 files (0.0% non-contiguous), 763/16384 blocks Exit status is 0