LPI学习-----3

2. [root@btg linux-2.6]# truncate --size 128M fsfile
3. [root@btg linux-2.6]# mkfs.ext4 -F fsfile
4. mke2fs 1.41.12 (17-May-2010)
5. 文件系统标签=
6. 操作系统:Linux
7. 块大小=1024 (log=0)
8. 分块大小=1024 (log=0)
9. Stride=0 blocks, Stripe width=0 blocks
10. 32768 inodes, 131072 blocks
11. 6553 blocks (5.00%) reserved for the super user
12. 第一个数据块=1
13. Maximum filesystem blocks=67371008
14. 16 block groups
15. 8192 blocks per group, 8192 fragments per group
16. 2048 inodes per group
17. Superblock backups stored on blocks: 
18. 8193, 24577, 40961, 57345, 73729
20. 正在写入inode表: 完成                            
21. Creating journal (4096 blocks): 完成
22. Writing superblocks and filesystem accounting information: 完成
24. This filesystem will be automatically checked every 33 mounts or
25. 180 days, whichever comes first.  Use tune2fs -c or -i to override.
26. [root@btg linux-2.6]# 
27. [root@btg linux-2.6]# losetup /dev/loop0 fsfile
28. [root@btg linux-2.6]# mount /dev/loop0 mnt
29. [root@btg linux-2.6]# 
31. [root@btg linux-2.6]# tune2fs -l /opt/linux-2.6/fsfile
32. tune2fs 1.41.12 (17-May-2010)
33. Filesystem volume name: <none>
34. Last mounted on: <not available>
35. Filesystem UUID: 1a1354d1-3a6d-4a32-bff6-6f0460d7173a
36. Filesystem magic number: 0xEF53
37. Filesystem revision #: 1 (dynamic)
38. Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery extent flex_bg sparse_super huge_file uninit_bg dir_nlink extra_isize
39. Filesystem flags: signed_directory_hash
40. Default mount options: (none)
41. Filesystem state: clean
42. Errors behavior: Continue
43. Filesystem OS type: Linux
44. Inode count: 32768
45. Block count: 131072
46. Reserved block count: 6553
47. Free blocks: 121285
48. Free inodes: 32757
49. First block: 1
50. Block size: 1024
51. Fragment size: 1024
52. Reserved GDT blocks: 256
53. Blocks per group: 8192
54. Fragments per group: 8192
55. Inodes per group: 2048
56. Inode blocks per group: 256
57. Flex block group size: 16
58. Filesystem created: Thu Jun 2 15:15:12 2011
59. Last mount time: Thu Jun 2 15:15:50 2011
60. Last write time: Thu Jun 2 15:15:50 2011
61. Mount count: 1
62. Maximum mount count: 33
63. Last checked: Thu Jun 2 15:15:12 2011
64. Check interval: 15552000 (6 months)
65. Next check after: Tue Nov 29 15:15:12 2011
66. Lifetime writes: 8 MB
67. Reserved blocks uid: 0 (user root)
68. Reserved blocks gid: 0 (group root)
69. First inode: 11
70. Inode size:     128
71. Journal inode: 8
72. Default directory hash: half_md4
73. Directory Hash Seed: 1514e018-3be3-4cdf-a60c-602892d9049f
74. Journal backup: inode blocks
75. [root@btg linux-2.6]#
76. [root@btg linux-2.6]# tune2fs -L "HelloEXAMPLE" /opt/linux-2.6/fsfile
77. tune2fs 1.41.12 (17-May-2010)
78. [root@btg linux-2.6]# tune2fs -l /opt/linux-2.6/fsfile |grep "Filesystem volume name"
79. Filesystem volume name: HelloEXAMPLE
80. [root@btg linux-2.6]#

上面可以查看/dev/sda1上面的左右的可调参数

-c是设置最大挂载次数

-i是设定两次文件系统检查之间的最长时间间隔

-L设置label

-j 设置has_journal功能标记

-r设置保留块数