| Filesystem volume name: <none> | |
| Last mounted on: <not available> | |
| Filesystem magic number: 0xEF53 | |
| Filesystem revision #: 1 (dynamic) | |
| Filesystem features: has_journal ext_attr resize_inode dir_index filetype extent 64bit flex_bg sparse_super huge_file dir_nlink extra_isize metadata_csum | |
| Default mount options: (none) | |
| Filesystem state: clean | |
| Errors behavior: Continue | |
| Filesystem OS type: Linux | |
| Inode count: 1024 | |
| Block count: 16384 | |
| Reserved block count: 819 | |
| Overhead clusters: 1543 | |
| Free blocks: 14786 | |
| Free inodes: 1005 | |
| First block: 1 | |
| Block size: 1024 | |
| Fragment size: 1024 | |
| Group descriptor size: 64 | |
| Reserved GDT blocks: 127 | |
| Blocks per group: 8192 | |
| Fragments per group: 8192 | |
| Inodes per group: 512 | |
| Inode blocks per group: 128 | |
| Flex block group size: 16 | |
| Mount count: 0 | |
| Check interval: 15552000 (6 months) | |
| Reserved blocks uid: 0 | |
| Reserved blocks gid: 0 | |
| First inode: 11 | |
| Inode size: 256 | |
| Required extra isize: 32 | |
| Desired extra isize: 32 | |
| Journal inode: 8 | |
| Default directory hash: half_md4 | |
| Journal backup: inode blocks | |
| Checksum type: crc32c | |
| Journal features: (none) | |
| Total journal size: 1024k | |
| Total journal blocks: 1024 | |
| Max transaction length: 1024 | |
| Fast commit length: 0 | |
| Journal sequence: 0x00000001 | |
| Journal start: 0 | |
| Group 0: (Blocks 1-8192) | |
| Primary superblock at 1, Group descriptors at 2-2 | |
| Reserved GDT blocks at 3-129 | |
| Block bitmap at 130 (+129) | |
| Inode bitmap at 132 (+131) | |
| Inode table at 134-261 (+133) | |
| 7748 free blocks, 493 free inodes, 4 directories, 493 unused inodes | |
| Free blocks: 445-8192 | |
| Free inodes: 20-512 | |
| Group 1: (Blocks 8193-16383) [INODE_UNINIT] | |
| Backup superblock at 8193, Group descriptors at 8194-8194 | |
| Reserved GDT blocks at 8195-8321 | |
| Block bitmap at 131 (bg #0 + 130) | |
| Inode bitmap at 133 (bg #0 + 132) | |
| Inode table at 262-389 (bg #0 + 261) | |
| 7038 free blocks, 512 free inodes, 0 directories, 512 unused inodes | |
| Free blocks: 9346-16383 | |
| Free inodes: 513-1024 | |
| debugfs: stat /emptyfile | |
| Inode: III Type: regular | |
| Size: 0 | |
| Fragment: Address: 0 Number: 0 Size: 0 | |
| debugfs: stat /bigfile | |
| Inode: III Type: regular | |
| Size: 32768 | |
| Fragment: Address: 0 Number: 0 Size: 0 | |
| debugfs: stat /sparsefile | |
| Inode: III Type: regular | |
| Size: 1073741825 | |
| Fragment: Address: 0 Number: 0 Size: 0 | |
| debugfs: stat /bigzerofile | |
| Inode: III Type: regular | |
| Size: 1073741825 | |
| Fragment: Address: 0 Number: 0 Size: 0 | |
| debugfs: stat /fifo | |
| debugfs: stat /emptydir | |
| Inode: III Type: directory | |
| Size: 1024 | |
| Fragment: Address: 0 Number: 0 Size: 0 | |
| debugfs: stat /dir | |
| Inode: III Type: directory | |
| Size: 1024 | |
| Fragment: Address: 0 Number: 0 Size: 0 | |
| debugfs: stat /dir/file | |
| Inode: III Type: regular | |
| Size: 8 | |
| Fragment: Address: 0 Number: 0 Size: 0 | |
| debugfs: ex /emptyfile | |
| Level Entries Logical Physical Length Flags | |
| debugfs: ex /bigfile | |
| Level Entries Logical Physical Length Flags | |
| X 0/0 1/1 0-31 AAA-BBB 32 | |
| debugfs: ex /sparsefile | |
| Level Entries Logical Physical Length Flags | |
| Y 0/1 1/1 1-1048576 AAA 1048576 | |
| X 1/1 1/5 1-1 AAA-BBB 1 | |
| X 1/1 2/5 512-512 AAA-BBB 1 | |
| X 1/1 3/5 1024-1024 AAA-BBB 1 | |
| X 1/1 4/5 524288-524288 AAA-BBB 1 | |
| X 1/1 5/5 1048576-1048576 AAA-BBB 1 | |
| debugfs: ex /bigzerofile | |
| Level Entries Logical Physical Length Flags | |
| debugfs: ex /dir | |
| Level Entries Logical Physical Length Flags | |
| X 0/0 1/1 0-0 AAA-BBB 1 | |
| debugfs: ex /dir/file | |
| Level Entries Logical Physical Length Flags | |
| X 0/0 1/1 0-0 AAA-BBB 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.img: 19/1024 files (0.0% non-contiguous), 1598/16384 blocks |