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    SubjectRe: [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

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