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    SubjectRe: [Ext2-devel] [RFC 0/13] extents and 48bit ext3
    Theodore Tso wrote:
    > On Fri, Jun 09, 2006 at 02:51:55PM -0400, Jeff Garzik wrote:
    >> ext3 is already essentially xiafs-on-life-support, when you consider
    >> today's large storage systems and today's filesystem technology. Just
    >> look at the ugly hacks needed to support expanding an ext3 filesystem
    >> online.
    >
    > And what ugly hacks are you talking about? It's actually quite clean;
    > with the latest e2fsprogs, you use the same command (resize2fs) for
    > doing both online and offline resizing.

    Consider a blkdev of size S1. Using LVM we increase that value under
    the hood to size S2, where S2 > S1. We perform an online resize from
    size S1 to S2. The size and alignment of any new groups added will
    different from the non-resize case, where mke2fs was run directly on a
    blkdev of size S2.

    Jeff



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