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    SubjectRe: [Ext2-devel] [RFC 0/13] extents and 48bit ext3
    Theodore Tso wrote:
    > Jeff, you seem to think that the fact that the layout isn't precisely
    > the same after an on-line resizing is proof of something horrible, but
    > it isn't. The exact location of filesystem metadata has never been
    > fixed, not in the past ten years of ext2/3 history, and this is not a
    > big deal. It certainly isn't "proof" of on-line resizing being
    > something horrible, as you keep trying to claim, without any arguments
    > other than, "The layout is different!".

    No, I was proving merely that it is _different_. And the values where
    you see a _difference_ are the ones of which are no longer sized
    optimally, after you grow the fs to a larger size.

    So you incur a performance penalty for resizing to size S2, rather than
    mke2fs'ing the new blkdev at size S2. Certainly within the confines of
    ext3 that cannot be helped, but a different inode allocation strategy
    could improve upon that.

    Jeff


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