INodes...

Could someone please explain to me the concept of INodes?
Colour me a DOS/MacOS junkie, but I don't quite understand.
Is there any relation to clusters, or physical distro.?
ty.

Inodes are the numerical representation of a file. Each file has a unique number/inode, also there is metadata associated with the file.

Most filesystems have a max inode limit, whic represents the number of files that can be created in a filesystem. This number can be set at the time you create a filesystem depending on the filesystem type.

For simplicity sake, think of an inode on a Unix
system like a sector on a DOS FAT filesystem.

interesting. thanks, that explains alot! One other question, though: I've heard that the Ext2 fs is more... efficeint... how is this relational to INodes? I think I heard that instaed of using wasteful clusters, the INodes are the actual size of the file...?