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
13 Overhead clusters: 1543
19 Group descriptor size: 64
20 Reserved GDT blocks: 127
21 Blocks per group: 8192
22 Fragments per group: 8192
24 Inode blocks per group: 128
25 Flex block group size: 16
27 Check interval: 15552000 (6 months)
28 Reserved blocks uid: 0
29 Reserved blocks gid: 0
32 Required extra isize: 32
33 Desired extra isize: 32
35 Default directory hash: half_md4
36 Journal backup: inode blocks
38 Journal features: (none)
39 Total journal size: 1024k
40 Total journal blocks: 1024
41 Max transaction length: 1024
43 Journal sequence: 0x00000001
47 Group 0: (Blocks 1-8192)
48 Primary superblock at 1, Group descriptors at 2-2
49 Reserved GDT blocks at 3-129
50 Block bitmap at 130 (+129)
51 Inode bitmap at 132 (+131)
52 Inode table at 134-261 (+133)
53 7748 free blocks, 493 free inodes, 4 directories, 493 unused inodes
56 Group 1: (Blocks 8193-16383) [INODE_UNINIT]
57 Backup superblock at 8193, Group descriptors at 8194-8194
58 Reserved GDT blocks at 8195-8321
59 Block bitmap at 131 (bg #0 + 130)
60 Inode bitmap at 133 (bg #0 + 132)
61 Inode table at 262-389 (bg #0 + 261)
62 7038 free blocks, 512 free inodes, 0 directories, 512 unused inodes
63 Free blocks: 9346-16383
65 debugfs: stat /emptyfile
66 Inode: III Type: regular
68 Fragment: Address: 0 Number: 0 Size: 0
69 debugfs: stat /bigfile
70 Inode: III Type: regular
72 Fragment: Address: 0 Number: 0 Size: 0
73 debugfs: stat /sparsefile
74 Inode: III Type: regular
76 Fragment: Address: 0 Number: 0 Size: 0
77 debugfs: stat /bigzerofile
78 Inode: III Type: regular
80 Fragment: Address: 0 Number: 0 Size: 0
82 debugfs: stat /emptydir
83 Inode: III Type: directory
85 Fragment: Address: 0 Number: 0 Size: 0
87 Inode: III Type: directory
89 Fragment: Address: 0 Number: 0 Size: 0
90 debugfs: stat /dir/file
91 Inode: III Type: regular
93 Fragment: Address: 0 Number: 0 Size: 0
94 debugfs: ex /emptyfile
95 Level Entries Logical Physical Length Flags
97 Level Entries Logical Physical Length Flags
98 X 0/0 1/1 0-31 AAA-BBB 32
99 debugfs: ex /sparsefile
100 Level Entries Logical Physical Length Flags
101 Y 0/1 1/1 1-1048576 AAA 1048576
102 X 1/1 1/5 1-1 AAA-BBB 1
103 X 1/1 2/5 512-512 AAA-BBB 1
104 X 1/1 3/5 1024-1024 AAA-BBB 1
105 X 1/1 4/5 524288-524288 AAA-BBB 1
106 X 1/1 5/5 1048576-1048576 AAA-BBB 1
107 debugfs: ex /bigzerofile
108 Level Entries Logical Physical Length Flags
110 Level Entries Logical Physical Length Flags
111 X 0/0 1/1 0-0 AAA-BBB 1
112 debugfs: ex /dir/file
113 Level Entries Logical Physical Length Flags
114 X 0/0 1/1 0-0 AAA-BBB 1
115 Pass 1: Checking inodes, blocks, and sizes
116 Pass 2: Checking directory structure
117 Pass 3: Checking directory connectivity
118 Pass 4: Checking reference counts
119 Pass 5: Checking group summary information
120 test.img: 19/1024 files (0.0% non-contiguous), 1598/16384 blocks