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:              14827
Free inodes:              1012
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)
  7789 free blocks, 500 free inodes, 2 directories, 500 unused inodes
  Free blocks: 404-8192
  Free inodes: 13-512
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 /file
Inode: III   Type: regular    
Generation: 0    Version: 0x00000000:00000000
Size: 0
File ACL: 0
Links: 1   Blockcount: 0
Fragment:  Address: 0    Number: 0    Size: 0
 ctime: 0x00000000:00000000 -- Thu Jan  1 00:00:00 1970
 atime: 0x00000000:00000000 -- Thu Jan  1 00:00:00 1970
 mtime: 0x00000000:00000000 -- Thu Jan  1 00:00:00 1970
Size of extra inode fields: 32
Extended attributes:
  security.capability (20) = 01 00 00 02 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
EXTENTS:
debugfs: ea_list /file
Extended attributes:
  security.capability (20) = 01 00 00 02 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
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: 12/1024 files (0.0% non-contiguous), 1557/16384 blocks