dumpe2fs실무1편: 특정 파일시스템의 상세정보와 그 사용내역 확인하기

[root@sulinux ~]# dumpe2fs /dev/sda3

dumpe2fs 1.41.3 (12-Oct-2018)

Filesystem volume name:   /home

Last mounted on:          <not available>

Filesystem UUID:          e258fd21-3bda-4c09-8e71-bb0519d6b2cc

Filesystem magic number:  0xEF53

Filesystem revision #:    1 (dynamic)

Filesystem features:      has_journal ext_attr resize_inode dir_index filetype needs_recovery sparse_super large_file

Filesystem flags:         signed_directory_hash

Default mount options:    user_xattr acl

Filesystem state:         clean

Errors behavior:          Continue

Filesystem OS type:       Linux

Inode count:              65808

Block count:              263064

Reserved block count:     13153

Free blocks:              250021

Free inodes:              65595

First block:              0

Block size:               4096

Fragment size:            4096

Reserved GDT blocks:      64

Blocks per group:         32768

Fragments per group:      32768

Inodes per group:         7312

Inode blocks per group:   457

Filesystem created:       Mon Dec  1 21:47:55 2018

Last mount time:          Mon Jan  5 19:23:03 2019

Last write time:          Mon Jan  5 19:23:03 2019

Mount count:              31

Maximum mount count:      -1

Last checked:             Mon Dec  1 21:47:55 2018

Check interval:           0 (<none>)

Reserved blocks uid:      0 (user root)

Reserved blocks gid:      0 (group root)

First inode:              11

Inode size:               256

Required extra isize:     28

Desired extra isize:      28

Journal inode:            8

Default directory hash:   half_md4

Directory Hash Seed:      d8d9df44-8e11-4cbc-a345-a394c6bec699

Journal backup:           inode blocks

Journal size:             32M

Group 0: (Blocks 0-32767)

  Primary superblock at 0, Group descriptors at 1-1

  Reserved GDT blocks at 2-65

  Block bitmap at 66 (+66), Inode bitmap at 67 (+67)

  Inode table at 68-524 (+68)

  24033 free blocks, 7301 free inodes, 2 directories

  Free blocks: 8735-32767

  Free inodes: 12-7312

Group 1: (Blocks 32768-65535)

  Backup superblock at 32768, Group descriptors at 32769-32769

  Reserved GDT blocks at 32770-32833

  Block bitmap at 32834 (+66), Inode bitmap at 32835 (+67)

  Inode table at 32836-33292 (+68)

  32231 free blocks, 7296 free inodes, 6 directories

  Free blocks: 33293-45179, 45181-45190, 45192-51199, 51208-55295, 55297-57343, 57345-65535

  Free inodes: 7326-7329, 7331, 7333-7334, 7336-14624

Group 2: (Blocks 65536-98303)

  Block bitmap at 65536 (+0), Inode bitmap at 65537 (+1)

  Inode table at 65538-65994 (+2)

  32309 free blocks, 7312 free inodes, 0 directories

  Free blocks: 65995-98303

  Free inodes: 14625-21936

Group 3: (Blocks 98304-131071)

  Backup superblock at 98304, Group descriptors at 98305-98305

  Reserved GDT blocks at 98306-98369

  Block bitmap at 98370 (+66), Inode bitmap at 98371 (+67)

  Inode table at 98372-98828 (+68)

  32235 free blocks, 7304 free inodes, 5 directories

  Free blocks: 98829-126975, 126984-131071

  Free inodes: 21945-29248

Group 4: (Blocks 131072-163839)

  Block bitmap at 131072 (+0), Inode bitmap at 131073 (+1)

  Inode table at 131074-131530 (+2)

  32309 free blocks, 7312 free inodes, 0 directories

  Free blocks: 131531-163839

  Free inodes: 29249-36560

Group 5: (Blocks 163840-196607)

  Backup superblock at 163840, Group descriptors at 163841-163841

  Reserved GDT blocks at 163842-163905

  Block bitmap at 163906 (+66), Inode bitmap at 163907 (+67)

  Inode table at 163908-164364 (+68)

  32234 free blocks, 7303 free inodes, 5 directories

  Free blocks: 164365-169983, 169992-192519, 192521-196607

  Free inodes: 36569-36570, 36572-43872

Group 6: (Blocks 196608-229375)

  Block bitmap at 196608 (+0), Inode bitmap at 196609 (+1)

  Inode table at 196610-197066 (+2)

  32309 free blocks, 7312 free inodes, 0 directories

  Free blocks: 197067-229375

  Free inodes: 43873-51184

Group 7: (Blocks 229376-262143)

  Backup superblock at 229376, Group descriptors at 229377-229377

  Reserved GDT blocks at 229378-229441

  Block bitmap at 229442 (+66), Inode bitmap at 229443 (+67)

  Inode table at 229444-229900 (+68)

  31900 free blocks, 7143 free inodes, 81 directories

  Free blocks: 229974-231423, 231446-231463, 231485-237567, 237572-239615, 239620-241663, 241665-241676, 241724-241727, 241729-243719, 243775-245759, 245762-247807, 247824, 247826-247827, 247831-247833, 247838-247842, 247845-247850, 247860, 247864, 247866-247877, 247880-249855, 249857-249862, 249867-249871, 249873-251903, 251906, 251917-253951, 253953-253959, 253963-253968, 253974, 253997-255999, 256007, 256012-258049, 258051-260095, 260107-262143

  Free inodes: 51353-51356, 51358-58496

Group 8: (Blocks 262144-263063)

  Block bitmap at 262144 (+0), Inode bitmap at 262145 (+1)

  Inode table at 262146-262602 (+2)

  461 free blocks, 7312 free inodes, 0 directories

  Free blocks: 262603-263063

  Free inodes: 58497-65808

[root@sulinux ~]#