Re: [RFC][PATCH] ChunkFS: fs fission for faster fsck

From: Jeff Dike
Date: Fri Apr 27 2007 - 11:15:10 EST

On Thu, Apr 26, 2007 at 09:58:25PM -0700, Valerie Henson wrote:
> Here's an example, spelled out:
> Allocate file 1 in chunk A.
> Grow file 1.
> Chunk A fills up.
> Allocate continuation inode for file 1 in chunk B.
> Chunk A gets some free space.
> Chunk B fills up.
> Pick chunk A for allocating next block of file 1.
> Try to look up a continuation inode for file 1 in chunk A.
> Continuation inode for file 1 found in chunk A!
> Attach newly allocated block to existing inode for file 1 in chunk A.

So far, so good (and the slides are helpful, tx!). What happens when
file 1 keeps growing and chunk A fills up (and chunk B is still full)?
Can the same continuation inode also point at chunk C, where the file
is going to grow to?


Work email - jdike at linux dot intel dot com
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