On Sat, 8 Oct 2011, Daniel Carosone wrote:
This isn't about whether the metadata compresses, this is about
whether ZFS is smart enough to use all the space in a 4k block for
metadata, rather than assuming it can fit at best 512 bytes,
regardless of ashift.  By packing, I meant packing them full rather
than leaving them mostly empty and wasted (or anything to do with
compression).


It would seem like quite a problem/challenge to stuff unrelated metadata into the same metadata block. The COW algorithm would become much more complex and slow since now many otherwise-unrelated references to the same block need to be updated whenever that block is updated (copied).

Bob
--
Bob Friesenhahn
bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/
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