Linux的EXT4 文件系统的历史、特性以及最佳实践

group: 509

Flex block group size: 16

Filesystem created: Tue Feb 7 09:33:34 2017

Last mount time: Sat Apr 29 21:42:01 2017

Last write time: Sat Apr 29 21:42:01 2017

Mount count: 25

Maximum mount count: -1

Last checked: Tue Feb 7 09:33:34 2017

Check interval: 0 (<none>)

Lifetime writes: 594 MB

Reserved blocks uid: 0 (user root)

Reserved blocks gid: 0 (group root)

First inode: 11

Inode size: 256

Required extra isize: 32

Desired extra isize: 32

Journal inode: 8

Default directory hash: half_md4

Directory Hash Seed: c780bac9-d4bf-4f35-b695-0fe35e8d2d60

Journal backup: inode blocks

Journal features: journal_64bit

Journal size: 32M

Journal length: 8192

Journal sequence: 0x00000213

Journal start: 0

Group 0: (Blocks 0-32767)

Primary superblock at 0, Group descriptors at 1-1

Reserved GDT blocks at 2-239

Block bitmap at 240 (+240)

Inode bitmap at 255 (+255)

Inode table

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