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 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) Journal size: 1024k Journal length: 1024 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