mirror of https://gitee.com/openkylin/linux.git
39 lines
827 B
ReStructuredText
39 lines
827 B
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0
|
|
|
|
Special inodes
|
|
--------------
|
|
|
|
ext4 reserves some inode for special features, as follows:
|
|
|
|
.. list-table::
|
|
:widths: 6 70
|
|
:header-rows: 1
|
|
|
|
* - inode Number
|
|
- Purpose
|
|
* - 0
|
|
- Doesn't exist; there is no inode 0.
|
|
* - 1
|
|
- List of defective blocks.
|
|
* - 2
|
|
- Root directory.
|
|
* - 3
|
|
- User quota.
|
|
* - 4
|
|
- Group quota.
|
|
* - 5
|
|
- Boot loader.
|
|
* - 6
|
|
- Undelete directory.
|
|
* - 7
|
|
- Reserved group descriptors inode. (“resize inode”)
|
|
* - 8
|
|
- Journal inode.
|
|
* - 9
|
|
- The “exclude” inode, for snapshots(?)
|
|
* - 10
|
|
- Replica inode, used for some non-upstream feature?
|
|
* - 11
|
|
- Traditional first non-reserved inode. Usually this is the lost+found directory. See s\_first\_ino in the superblock.
|
|
|