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

On Wed, Apr 25, 2007 at 03:47:10PM -0700, Valerie Henson wrote:
Actually, there is an upper limit on the number of continuation
inodes. Each file can have a maximum of one continuation inode per
chunk. (This is why we need to support sparse files.)

How about this case:

Growing file starts in chunk A.
Overflows into chunk B.
Delete file in chunk A.
Growing file overflows chunk B and spots new free space in
chunk A (and nothing anywhere else)
Overflows into chunk A
Delete file in chunk B.
Overflow into chunk B again.

Maybe this is not realistic, but in the absence of a mechanism to pull
data back from an overflow chunk, it seems at least a theoretical
possibility that there could be > 1 continuation inodes per file per
chunk.

Jeff

--
Work email - jdike at linux dot intel dot com
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/