VFS and FS i-node difference

Posted by gaffcz on Super User See other posts from Super User or by gaffcz
Published on 2014-06-07T07:49:30Z Indexed on 2014/06/07 9:28 UTC
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linux

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filesystems

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operating-systems

What is the difference between VFS i-node and FS (e.g. EXT) i-node?

Is it possible that EXT i-node is persistent (contains/points to data blocks), but VFS i-node is created just in i-node cache after read/use of EXT i-node?

Or the VFS i-node is just an image of FS i-node (it's the same) and i-nodes in those systems, which are not working with i-nodes (e.g. FAT, NTFS) has to be emulated (HOW?) to allow VFS work with those FS like they would support i-nodes?

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