如果有好的答复将加到100分 linux系统如何跟踪那些未被使用的磁盘和i-节点

[yangzhifu]

问题1：
如题：
问题2：
在非unix系统的磁盘，像pc-dos 在这些系统中没有i-节点，
当使用mount将其中一个磁盘连接到Unix系统时，命令ls-i将列出这些节点，
这些编号是怎么来的！

[yangzhifu]

还是没有人回答！

[huyongzs]

当使用mount将其中一个磁盘连接到Unix系统时，命令ls-i将列出这些节点，
这些编号是怎么来的！
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linux其实使用的文件系统都抽象成VFS文件系统。对于linux来说面对的只有VFS这一种文件系统。关于VFS我就不多说了。网络上多的是。

[yangzhifu]

等待有人回答第一题！

[yangzhifu]

等待！

[yangzhifu]

继续等待!

[wargrey]

太抽象

[yangzhifu]

^_^ 结贴了，自己看明白了！
The EXT2 Group Descriptor
Each Block Group has a data structure describing it. Like the Superblock, all the group descriptors for all of the Block Groups are duplicated in each Block Group in case of file system corruption.
Each Group Descriptor contains the following information:
Blocks Bitmap
The block number of the block allocation bitmap for this Block Group. This is used during block allocation and deallocation,
Inode Bitmap
The block number of the inode allocation bitmap for this Block Group. This is used during inode allocation and deallocation,
Inode Table
The block number of the starting block for the inode table for this Block Group. Each inode is represented by the EXT2 inode data structure described below.
Free blocks count, Free Inodes count, Used directory count
The group descriptors are placed on after another and together they make the group descriptor table. Each Blocks Group contains the entire table of group descriptors after its copy of the Superblock. Only the first copy (in Block Group 0) is actually used by the EXT2 file system. The other copies are there, like the copies of the Superblock, in case the main copy is corrupted.