1 Filesystem volume name: <none>
2 Last mounted on: <not available>
3 Filesystem magic number: 0xEF53
4 Filesystem revision #: 1 (dynamic)
5 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
6 Default mount options: (none)
7 Filesystem state: clean
8 Errors behavior: Continue
9 Filesystem OS type: Linux
12 Reserved block count: 819
18 Group descriptor size: 64
19 Reserved GDT blocks: 127
20 Blocks per group: 8192
21 Fragments per group: 8192
23 Inode blocks per group: 128
24 Flex block group size: 16
26 Check interval: 15552000 (6 months)
27 Reserved blocks uid: 0
28 Reserved blocks gid: 0
31 Required extra isize: 28
32 Desired extra isize: 28
34 Default directory hash: half_md4
35 Journal backup: inode blocks
37 Journal features: (none)
40 Journal sequence: 0x00000001
44 Group 0: (Blocks 1-8192)
45 Primary superblock at 1, Group descriptors at 2-2
46 Reserved GDT blocks at 3-129
47 Block bitmap at 130 (+129)
48 Inode bitmap at 132 (+131)
49 Inode table at 134-261 (+133)
50 7748 free blocks, 493 free inodes, 4 directories, 493 unused inodes
53 Group 1: (Blocks 8193-16383) [INODE_UNINIT]
54 Backup superblock at 8193, Group descriptors at 8194-8194
55 Reserved GDT blocks at 8195-8321
56 Block bitmap at 131 (bg #0 + 130)
57 Inode bitmap at 133 (bg #0 + 132)
58 Inode table at 262-389 (bg #0 + 261)
59 7038 free blocks, 512 free inodes, 0 directories, 512 unused inodes
60 Free blocks: 9346-16383
62 debugfs: stat /emptyfile
63 Inode: III Type: regular
65 Fragment: Address: 0 Number: 0 Size: 0
66 debugfs: stat /bigfile
67 Inode: III Type: regular
69 Fragment: Address: 0 Number: 0 Size: 0
70 debugfs: stat /sparsefile
71 Inode: III Type: regular
73 Fragment: Address: 0 Number: 0 Size: 0
74 debugfs: stat /bigzerofile
75 Inode: III Type: regular
77 Fragment: Address: 0 Number: 0 Size: 0
79 debugfs: stat /emptydir
80 Inode: III Type: directory
82 Fragment: Address: 0 Number: 0 Size: 0
84 Inode: III Type: directory
86 Fragment: Address: 0 Number: 0 Size: 0
87 debugfs: stat /dir/file
88 Inode: III Type: regular
90 Fragment: Address: 0 Number: 0 Size: 0
91 debugfs: ex /emptyfile
92 Level Entries Logical Physical Length Flags
94 Level Entries Logical Physical Length Flags
95 X 0/0 1/1 0-31 AAA-BBB 32
96 debugfs: ex /sparsefile
97 Level Entries Logical Physical Length Flags
98 Y 0/1 1/1 1-1048576 AAA 1048576
99 X 1/1 1/5 1-1 AAA-BBB 1
100 X 1/1 2/5 512-512 AAA-BBB 1
101 X 1/1 3/5 1024-1024 AAA-BBB 1
102 X 1/1 4/5 524288-524288 AAA-BBB 1
103 X 1/1 5/5 1048576-1048576 AAA-BBB 1
104 debugfs: ex /bigzerofile
105 Level Entries Logical Physical Length Flags
107 Level Entries Logical Physical Length Flags
108 X 0/0 1/1 0-0 AAA-BBB 1
109 debugfs: ex /dir/file
110 Level Entries Logical Physical Length Flags
111 X 0/0 1/1 0-0 AAA-BBB 1
112 Pass 1: Checking inodes, blocks, and sizes
113 Pass 2: Checking directory structure
114 Pass 3: Checking directory connectivity
115 Pass 4: Checking reference counts
116 Pass 5: Checking group summary information
117 test.img: 19/1024 files (0.0% non-contiguous), 1598/16384 blocks